src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd.h"
  22 #include "inspircd_io.h"
  23 #include "inspircd_util.h"
  24 #include "inspircd_config.h"
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/errno.h>
  28 #include <sys/ioctl.h>
  29 #include <sys/utsname.h>
  30 #include <cstdio>
  31 #include <time.h>
  32 #include <string>
  33 #ifdef GCC3
  34 #include <ext/hash_map>
  35 #else
  36 #include <hash_map>
  37 #endif
  38 #include <map>
  39 #include <sstream>
  40 #include <vector>
  41 #include <errno.h>
  42 #include <deque>
  43 #include <errno.h>
  44 #include "connection.h"
  45 #include "users.h"
  46 #include "servers.h"
  47 #include "ctables.h"
  48 #include "globals.h"
  49 #include "modules.h"
  50 #include "dynamic.h"
  51 #include "wildcard.h"
  52
  53 #ifdef GCC3
  54 #define nspace __gnu_cxx
  55 #else
  56 #define nspace std
  57 #endif
  58
  59 int LogLevel = DEFAULT;
  60 char ServerName[MAXBUF];
  61 char Network[MAXBUF];
  62 char ServerDesc[MAXBUF];
  63 char AdminName[MAXBUF];
  64 char AdminEmail[MAXBUF];
  65 char AdminNick[MAXBUF];
  66 char diepass[MAXBUF];
  67 char restartpass[MAXBUF];
  68 char motd[MAXBUF];
  69 char rules[MAXBUF];
  70 char list[MAXBUF];
  71 char PrefixQuit[MAXBUF];
  72 char DieValue[MAXBUF];
  73 int debugging =  0;
  74 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  75 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  76 int DieDelay  =  5;
  77 time_t startup_time = time(NULL);
  78 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  79 time_t nb_start = time(NULL);
  80
  81 extern vector<Module*> modules;
  82 std::vector<std::string> module_names;
  83 extern vector<ircd_module*> factory;
  84 std::vector<int> fd_reap;
  85
  86 extern int MODCOUNT;
  87
  88 bool nofork = false;
  89
  90 namespace nspace
  91 {
  92         template<> struct nspace::hash<in_addr>
  93         {
  94                 size_t operator()(const struct in_addr &a) const
  95                 {
  96                         size_t q;
  97                         memcpy(&q,&a,sizeof(size_t));
  98                         return q;
  99                 }
 100         };
 101
 102         template<> struct nspace::hash<string>
 103         {
 104                 size_t operator()(const string &s) const
 105                 {
 106                         char a[MAXBUF];
 107                         static struct hash<const char *> strhash;
 108                         strcpy(a,s.c_str());
 109                         strlower(a);
 110                         return strhash(a);
 111                 }
 112         };
 113 }
 114
 115
 116 struct StrHashComp
 117 {
 118
 119         bool operator()(const string& s1, const string& s2) const
 120         {
 121                 char a[MAXBUF],b[MAXBUF];
 122                 strcpy(a,s1.c_str());
 123                 strcpy(b,s2.c_str());
 124                 return (strcasecmp(a,b) == 0);
 125         }
 126
 127 };
 128
 129 struct InAddr_HashComp
 130 {
 131
 132         bool operator()(const in_addr &s1, const in_addr &s2) const
 133         {
 134                 size_t q;
 135                 size_t p;
 136
 137                 memcpy(&q,&s1,sizeof(size_t));
 138                 memcpy(&p,&s2,sizeof(size_t));
 139
 140                 return (q == p);
 141         }
 142
 143 };
 144
 145
 146 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 147 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 148 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 149 typedef std::deque<command_t> command_table;
 150
 151 serverrec* me[32];
 152 serverrec* servers[255];
 153
 154 FILE *log_file;
 155
 156 user_hash clientlist;
 157 chan_hash chanlist;
 158 user_hash whowas;
 159 command_table cmdlist;
 160 file_cache MOTD;
 161 file_cache RULES;
 162 address_cache IP;
 163
 164 ClassVector Classes;
 165
 166 struct linger linger = { 0 };
 167 char bannerBuffer[MAXBUF];
 168 int boundPortCount = 0;
 169 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 170 int defaultRoute = 0;
 171
 172 connection C;
 173
 174 long MyKey = C.GenKey();
 175
 176 /* prototypes */
 177
 178 int has_channel(userrec *u, chanrec *c);
 179 int usercount(chanrec *c);
 180 int usercount_i(chanrec *c);
 181 void update_stats_l(int fd,int data_out);
 182 char* Passwd(userrec *user);
 183 bool IsDenied(userrec *user);
 184 void AddWhoWas(userrec* u);
 185
 186 std::stringstream config_f(stringstream::in | stringstream::out);
 187
 188 void safedelete(userrec *p)
 189 {
 190         if (p)
 191         {
 192                 log(DEBUG,"deleting %s %s %s %s",p->nick,p->ident,p->dhost,p->fullname);
 193                 log(DEBUG,"safedelete(userrec*): pointer is safe to delete");
 194                 delete p;
 195                 p = NULL;
 196         }
 197         else
 198         {
 199                 log(DEBUG,"safedelete(userrec*): unsafe pointer operation squished");
 200         }
 201 }
 202
 203 void safedelete(chanrec *p)
 204 {
 205         if (p)
 206         {
 207                 delete p;
 208                 p = NULL;
 209                 log(DEBUG,"safedelete(chanrec*): pointer is safe to delete");
 210         }
 211         else
 212         {
 213                 log(DEBUG,"safedelete(chanrec*): unsafe pointer operation squished");
 214         }
 215 }
 216
 217
 218 void tidystring(char* str)
 219 {
 220         // strips out double spaces before a : parameter
 221
 222         char temp[MAXBUF];
 223         bool go_again = true;
 224
 225         if (!str)
 226         {
 227                 return;
 228         }
 229
 230         while ((str[0] == ' ') && (strlen(str)>0))
 231         {
 232                 str++;
 233         }
 234
 235         while (go_again)
 236         {
 237                 bool noparse = false;
 238                 int t = 0, a = 0;
 239                 go_again = false;
 240                 while (a < strlen(str))
 241                 {
 242                         if ((a<strlen(str)-1) && (noparse==false))
 243                         {
 244                                 if ((str[a] == ' ') && (str[a+1] == ' '))
 245                                 {
 246                                         log(DEBUG,"Tidied extra space out of string: %s",str);
 247                                         go_again = true;
 248                                         a++;
 249                                 }
 250                         }
 251
 252                         if (a<strlen(str)-1)
 253                         {
 254                                 if ((str[a] == ' ') && (str[a+1] == ':'))
 255                                 {
 256                                         noparse = true;
 257                                 }
 258                         }
 259
 260                         temp[t++] = str[a++];
 261                 }
 262                 temp[t] = '\0';
 263                 strncpy(str,temp,MAXBUF);
 264         }
 265 }
 266
 267 /* chop a string down to 512 characters and preserve linefeed (irc max
 268  * line length) */
 269
 270 void chop(char* str)
 271 {
 272   if (!str)
 273   {
 274         log(DEBUG,"ERROR! Null string passed to chop()!");
 275         return;
 276   }
 277   string temp = str;
 278   FOREACH_MOD OnServerRaw(temp,false);
 279   const char* str2 = temp.c_str();
 280   sprintf(str,"%s",str2);
 281
 282
 283   if (strlen(str) >= 512)
 284   {
 285         str[509] = '\r';
 286         str[510] = '\n';
 287         str[511] = '\0';
 288   }
 289 }
 290
 291
 292 std::string getservername()
 293 {
 294         return ServerName;
 295 }
 296
 297 std::string getserverdesc()
 298 {
 299         return ServerDesc;
 300 }
 301
 302 std::string getnetworkname()
 303 {
 304         return Network;
 305 }
 306
 307 std::string getadminname()
 308 {
 309         return AdminName;
 310 }
 311
 312 std::string getadminemail()
 313 {
 314         return AdminEmail;
 315 }
 316
 317 std::string getadminnick()
 318 {
 319         return AdminNick;
 320 }
 321
 322 void log(int level,char *text, ...)
 323 {
 324         char textbuffer[MAXBUF];
 325         va_list argsPtr;
 326         time_t rawtime;
 327         struct tm * timeinfo;
 328         if (level < LogLevel)
 329                 return;
 330
 331         time(&rawtime);
 332         timeinfo = localtime (&rawtime);
 333
 334         if (log_file)
 335         {
 336                 char b[MAXBUF];
 337                 va_start (argsPtr, text);
 338                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 339                 va_end(argsPtr);
 340                 strcpy(b,asctime(timeinfo));
 341                 b[strlen(b)-1] = ':';
 342                 fprintf(log_file,"%s %s\n",b,textbuffer);
 343                 if (nofork)
 344                 {
 345                         // nofork enabled? display it on terminal too
 346                         printf("%s %s\n",b,textbuffer);
 347                 }
 348         }
 349 }
 350
 351 void readfile(file_cache &F, const char* fname)
 352 {
 353   FILE* file;
 354   char linebuf[MAXBUF];
 355
 356   log(DEBUG,"readfile: loading %s",fname);
 357   F.clear();
 358   file =  fopen(fname,"r");
 359   if (file)
 360   {
 361         while (!feof(file))
 362         {
 363                 fgets(linebuf,sizeof(linebuf),file);
 364                 linebuf[strlen(linebuf)-1]='\0';
 365                 if (!strcmp(linebuf,""))
 366                 {
 367                         strcpy(linebuf,"  ");
 368                 }
 369                 if (!feof(file))
 370                 {
 371                         F.push_back(linebuf);
 372                 }
 373         }
 374         fclose(file);
 375   }
 376   else
 377   {
 378           log(DEBUG,"readfile: failed to load file: %s",fname);
 379   }
 380   log(DEBUG,"readfile: loaded %s, %d lines",fname,F.size());
 381 }
 382
 383 void ReadConfig(void)
 384 {
 385   char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF];
 386   ConnectClass c;
 387
 388   LoadConf(CONFIG_FILE,&config_f);
 389
 390   ConfValue("server","name",0,ServerName,&config_f);
 391   ConfValue("server","description",0,ServerDesc,&config_f);
 392   ConfValue("server","network",0,Network,&config_f);
 393   ConfValue("admin","name",0,AdminName,&config_f);
 394   ConfValue("admin","email",0,AdminEmail,&config_f);
 395   ConfValue("admin","nick",0,AdminNick,&config_f);
 396   ConfValue("files","motd",0,motd,&config_f);
 397   ConfValue("files","rules",0,rules,&config_f);
 398   ConfValue("power","diepass",0,diepass,&config_f);
 399   ConfValue("power","pause",0,pauseval,&config_f);
 400   ConfValue("power","restartpass",0,restartpass,&config_f);
 401   ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 402   ConfValue("die","value",0,DieValue,&config_f);
 403   ConfValue("options","loglevel",0,dbg,&config_f);
 404   ConfValue("options","netbuffersize",0,NB,&config_f);
 405   NetBufferSize = atoi(NB);
 406   if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 407   {
 408         log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 409         NetBufferSize = 10240;
 410   }
 411   if (!strcmp(dbg,"debug"))
 412         LogLevel = DEBUG;
 413   if (!strcmp(dbg,"verbose"))
 414         LogLevel = VERBOSE;
 415   if (!strcmp(dbg,"default"))
 416         LogLevel = DEFAULT;
 417   if (!strcmp(dbg,"sparse"))
 418         LogLevel = SPARSE;
 419   if (!strcmp(dbg,"none"))
 420         LogLevel = NONE;
 421   readfile(MOTD,motd);
 422   log(DEBUG,"Reading message of the day");
 423   readfile(RULES,rules);
 424   log(DEBUG,"Reading connect classes");
 425   Classes.clear();
 426   for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 427   {
 428         strcpy(Value,"");
 429         ConfValue("connect","allow",i,Value,&config_f);
 430         ConfValue("connect","timeout",i,timeout,&config_f);
 431         ConfValue("connect","flood",i,flood,&config_f);
 432         if (strcmp(Value,""))
 433         {
 434                 strcpy(c.host,Value);
 435                 c.type = CC_ALLOW;
 436                 strcpy(Value,"");
 437                 ConfValue("connect","password",i,Value,&config_f);
 438                 strcpy(c.pass,Value);
 439                 c.registration_timeout = 90; // default is 2 minutes
 440                 c.flood = atoi(flood);
 441                 if (atoi(timeout)>0)
 442                 {
 443                         c.registration_timeout = atoi(timeout);
 444                 }
 445                 Classes.push_back(c);
 446                 log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood);
 447         }
 448         else
 449         {
 450                 ConfValue("connect","deny",i,Value,&config_f);
 451                 strcpy(c.host,Value);
 452                 c.type = CC_DENY;
 453                 Classes.push_back(c);
 454                 log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 455         }
 456
 457   }
 458 }
 459
 460 void Blocking(int s)
 461 {
 462   int flags;
 463   log(DEBUG,"Blocking: %d",s);
 464   flags = fcntl(s, F_GETFL, 0);
 465   fcntl(s, F_SETFL, flags ^ O_NONBLOCK);
 466 }
 467
 468 void NonBlocking(int s)
 469 {
 470   int flags;
 471   log(DEBUG,"NonBlocking: %d",s);
 472   flags = fcntl(s, F_GETFL, 0);
 473   //fcntl(s, F_SETFL, O_NONBLOCK);
 474   fcntl(s, F_SETFL, flags | O_NONBLOCK);
 475 }
 476
 477
 478 int CleanAndResolve (char *resolvedHost, const char *unresolvedHost)
 479 {
 480   struct hostent *hostPtr = NULL;
 481   struct in_addr addr;
 482
 483   memset (resolvedHost, '\0',MAXBUF);
 484   if(unresolvedHost == NULL)
 485         return(ERROR);
 486   if ((inet_aton(unresolvedHost,&addr)) == 0)
 487         return(ERROR);
 488   hostPtr = gethostbyaddr ((char *)&addr.s_addr,sizeof(addr.s_addr),AF_INET);
 489   if (hostPtr != NULL)
 490         snprintf(resolvedHost,MAXBUF,"%s",hostPtr->h_name);
 491   else
 492         snprintf(resolvedHost,MAXBUF,"%s",unresolvedHost);
 493   return (TRUE);
 494 }
 495
 496 /* write formatted text to a socket, in same format as printf */
 497
 498 void Write(int sock,char *text, ...)
 499 {
 500   if (!text)
 501   {
 502         log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 503         return;
 504   }
 505   char textbuffer[MAXBUF];
 506   va_list argsPtr;
 507   char tb[MAXBUF];
 508
 509   va_start (argsPtr, text);
 510   vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 511   va_end(argsPtr);
 512   sprintf(tb,"%s\r\n",textbuffer);
 513   chop(tb);
 514   if (sock != -1)
 515   {
 516         write(sock,tb,strlen(tb));
 517         update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 518   }
 519 }
 520
 521 /* write a server formatted numeric response to a single socket */
 522
 523 void WriteServ(int sock, char* text, ...)
 524 {
 525   if (!text)
 526   {
 527         log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 528         return;
 529   }
 530   char textbuffer[MAXBUF],tb[MAXBUF];
 531   va_list argsPtr;
 532   va_start (argsPtr, text);
 533
 534   vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 535   va_end(argsPtr);
 536   sprintf(tb,":%s %s\r\n",ServerName,textbuffer);
 537   chop(tb);
 538   if (sock != -1)
 539   {
 540         write(sock,tb,strlen(tb));
 541         update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 542   }
 543 }
 544
 545 /* write text from an originating user to originating user */
 546
 547 void WriteFrom(int sock, userrec *user,char* text, ...)
 548 {
 549   if ((!text) || (!user))
 550   {
 551         log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 552         return;
 553   }
 554   char textbuffer[MAXBUF],tb[MAXBUF];
 555   va_list argsPtr;
 556   va_start (argsPtr, text);
 557
 558   vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 559   va_end(argsPtr);
 560   sprintf(tb,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 561   chop(tb);
 562   if (sock != -1)
 563   {
 564         write(sock,tb,strlen(tb));
 565         update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 566   }
 567 }
 568
 569 /* write text to an destination user from a source user (e.g. user privmsg) */
 570
 571 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 572 {
 573         if ((!dest) || (!data))
 574         {
 575                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 576                 return;
 577         }
 578         char textbuffer[MAXBUF],tb[MAXBUF];
 579         va_list argsPtr;
 580         va_start (argsPtr, data);
 581         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 582         va_end(argsPtr);
 583         chop(tb);
 584
 585         // if no source given send it from the server.
 586         if (!source)
 587         {
 588                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 589         }
 590         else
 591         {
 592                 WriteFrom(dest->fd,source,"%s",textbuffer);
 593         }
 594 }
 595
 596 /* write formatted text from a source user to all users on a channel
 597  * including the sender (NOT for privmsg, notice etc!) */
 598
 599 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 600 {
 601         if ((!Ptr) || (!user) || (!text))
 602         {
 603                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 604                 return;
 605         }
 606         char textbuffer[MAXBUF];
 607         va_list argsPtr;
 608         va_start (argsPtr, text);
 609         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 610         va_end(argsPtr);
 611         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 612         {
 613                 if (has_channel(i->second,Ptr))
 614                 {
 615                         WriteTo(user,i->second,"%s",textbuffer);
 616                 }
 617         }
 618 }
 619
 620 /* write formatted text from a source user to all users on a channel
 621  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 622  * users on remote servers */
 623
 624 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 625 {
 626         if ((!Ptr) || (!text))
 627         {
 628                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 629                 return;
 630         }
 631         char textbuffer[MAXBUF];
 632         va_list argsPtr;
 633         va_start (argsPtr, text);
 634         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 635         va_end(argsPtr);
 636         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 637         {
 638                 if (has_channel(i->second,Ptr))
 639                 {
 640                         if (i->second->fd != -1)
 641                         {
 642                                 if (!user)
 643                                 {
 644                                         WriteServ(i->second->fd,"%s",textbuffer);
 645                                 }
 646                                 else
 647                                 {
 648                                         WriteTo(user,i->second,"%s",textbuffer);
 649                                 }
 650                         }
 651                 }
 652         }
 653 }
 654
 655
 656 void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
 657 {
 658         if ((!Ptr) || (!user) || (!text))
 659         {
 660                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 661                 return;
 662         }
 663         char textbuffer[MAXBUF];
 664         va_list argsPtr;
 665         va_start (argsPtr, text);
 666         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 667         va_end(argsPtr);
 668         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 669         {
 670                 if (i->second)
 671                 {
 672                         if (has_channel(i->second,Ptr))
 673                         {
 674                                 WriteServ(i->second->fd,"%s",textbuffer);
 675                         }
 676                 }
 677         }
 678 }
 679
 680
 681 /* write formatted text from a source user to all users on a channel except
 682  * for the sender (for privmsg etc) */
 683
 684 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 685 {
 686         if ((!Ptr) || (!user) || (!text))
 687         {
 688                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 689                 return;
 690         }
 691         char textbuffer[MAXBUF];
 692         va_list argsPtr;
 693         va_start (argsPtr, text);
 694         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 695         va_end(argsPtr);
 696
 697         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 698         {
 699                 if (i->second)
 700                 {
 701                         if (has_channel(i->second,Ptr) && (user != i->second))
 702                         {
 703                                 WriteTo(user,i->second,"%s",textbuffer);
 704                         }
 705                 }
 706         }
 707 }
 708
 709 int c_count(userrec* u)
 710 {
 711         int z = 0;
 712         for (int i =0; i != MAXCHANS; i++)
 713                 if (u->chans[i].channel != NULL)
 714                         z++;
 715         return z;
 716
 717 }
 718
 719 /* return 0 or 1 depending if users u and u2 share one or more common channels
 720  * (used by QUIT, NICK etc which arent channel specific notices) */
 721
 722 int common_channels(userrec *u, userrec *u2)
 723 {
 724         int i = 0;
 725         int z = 0;
 726
 727         if ((!u) || (!u2))
 728         {
 729                 log(DEFAULT,"*** BUG *** common_channels was given an invalid parameter");
 730                 return 0;
 731         }
 732         for (int i = 0; i != MAXCHANS; i++)
 733         {
 734                 for (z = 0; z != MAXCHANS; z++)
 735                 {
 736                         if ((u->chans[i].channel != NULL) && (u2->chans[z].channel != NULL))
 737                         {
 738                                 if ((u->chans[i].channel == u2->chans[z].channel) && (u->chans[i].channel) && (u2->chans[z].channel) && (u->registered == 7) && (u2->registered == 7))
 739                                 {
 740                                         if ((c_count(u)) && (c_count(u2)))
 741                                         {
 742                                                 return 1;
 743                                         }
 744                                 }
 745                         }
 746                 }
 747         }
 748         return 0;
 749 }
 750
 751 /* write a formatted string to all users who share at least one common
 752  * channel, including the source user e.g. for use in NICK */
 753
 754 void WriteCommon(userrec *u, char* text, ...)
 755 {
 756         if (!u)
 757         {
 758                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 759                 return;
 760         }
 761
 762         if (u->registered != 7) {
 763                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 764                 return;
 765         }
 766
 767         char textbuffer[MAXBUF];
 768         va_list argsPtr;
 769         va_start (argsPtr, text);
 770         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 771         va_end(argsPtr);
 772
 773         WriteFrom(u->fd,u,"%s",textbuffer);
 774
 775         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 776         {
 777                 if (i->second)
 778                 {
 779                         if (common_channels(u,i->second) && (i->second != u))
 780                         {
 781                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 782                         }
 783                 }
 784         }
 785 }
 786
 787 /* write a formatted string to all users who share at least one common
 788  * channel, NOT including the source user e.g. for use in QUIT */
 789
 790 void WriteCommonExcept(userrec *u, char* text, ...)
 791 {
 792         if (!u)
 793         {
 794                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 795                 return;
 796         }
 797
 798         if (u->registered != 7) {
 799                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 800                 return;
 801         }
 802
 803         char textbuffer[MAXBUF];
 804         va_list argsPtr;
 805         va_start (argsPtr, text);
 806         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 807         va_end(argsPtr);
 808
 809         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 810         {
 811                 if (i->second)
 812                 {
 813                         if ((common_channels(u,i->second)) && (u != i->second))
 814                         {
 815                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 816                         }
 817                 }
 818         }
 819 }
 820
 821 void WriteOpers(char* text, ...)
 822 {
 823         if (!text)
 824         {
 825                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 826                 return;
 827         }
 828
 829         char textbuffer[MAXBUF];
 830         va_list argsPtr;
 831         va_start (argsPtr, text);
 832         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 833         va_end(argsPtr);
 834
 835         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 836         {
 837                 if (i->second)
 838                 {
 839                         if (strchr(i->second->modes,'o'))
 840                         {
 841                                 if (strchr(i->second->modes,'s'))
 842                                 {
 843                                         // send server notices to all with +s
 844                                         // (TODO: needs SNOMASKs)
 845                                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 846                                 }
 847                         }
 848                 }
 849         }
 850 }
 851
 852 // returns TRUE of any users on channel C occupy server 'servername'.
 853
 854 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 855 {
 856         log(DEBUG,"ChanAnyOnThisServer");
 857         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 858         {
 859                 if (has_channel(i->second,c))
 860                 {
 861                         if (!strcasecmp(i->second->server,servername))
 862                         {
 863                                 return true;
 864                         }
 865                 }
 866         }
 867         return false;
 868 }
 869
 870 // returns true if user 'u' shares any common channels with any users on server 'servername'
 871
 872 bool CommonOnThisServer(userrec* u,char* servername)
 873 {
 874         log(DEBUG,"ChanAnyOnThisServer");
 875         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 876         {
 877                 if ((common_channels(u,i->second)) && (u != i->second))
 878                 {
 879                         if (!strcasecmp(i->second->server,servername))
 880                         {
 881                                 return true;
 882                         }
 883                 }
 884         }
 885         return false;
 886 }
 887
 888
 889
 890 bool hasumode(userrec* user, char mode)
 891 {
 892         if (user)
 893         {
 894                 return (strchr(user->modes,mode)>0);
 895         }
 896         else return false;
 897 }
 898
 899 void WriteMode(const char* modes, int flags, const char* text, ...)
 900 {
 901         if ((!text) || (!modes) || (!flags))
 902         {
 903                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 904                 return;
 905         }
 906
 907         char textbuffer[MAXBUF];
 908         va_list argsPtr;
 909         va_start (argsPtr, text);
 910         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 911         va_end(argsPtr);
 912
 913         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 914         {
 915                 if (i->second)
 916                 {
 917                         bool send_to_user = false;
 918
 919                         if (flags == WM_AND)
 920                         {
 921                                 send_to_user = true;
 922                                 for (int n = 0; n < strlen(modes); n++)
 923                                 {
 924                                         if (!hasumode(i->second,modes[n]))
 925                                         {
 926                                                 send_to_user = false;
 927                                                 break;
 928                                         }
 929                                 }
 930                         }
 931                         else if (flags == WM_OR)
 932                         {
 933                                 send_to_user = false;
 934                                 for (int n = 0; n < strlen(modes); n++)
 935                                 {
 936                                         if (hasumode(i->second,modes[n]))
 937                                         {
 938                                                 send_to_user = true;
 939                                                 break;
 940                                         }
 941                                 }
 942                         }
 943
 944                         if (send_to_user)
 945                         {
 946                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 947                         }
 948                 }
 949         }
 950 }
 951
 952 void WriteWallOps(userrec *source, char* text, ...)
 953 {
 954         if ((!text) || (!source))
 955         {
 956                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 957                 return;
 958         }
 959
 960         int i = 0;
 961         char textbuffer[MAXBUF];
 962         va_list argsPtr;
 963         va_start (argsPtr, text);
 964         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 965         va_end(argsPtr);
 966
 967         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 968         {
 969                 if (i->second)
 970                 {
 971                         if (strchr(i->second->modes,'w'))
 972                         {
 973                                 WriteTo(source,i->second,"WALLOPS %s",textbuffer);
 974                         }
 975                 }
 976         }
 977 }
 978
 979 /* convert a string to lowercase. Note following special circumstances
 980  * taken from RFC 1459. Many "official" server branches still hold to this
 981  * rule so i will too;
 982  *
 983  *  Because of IRC's scandanavian origin, the characters {}| are
 984  *  considered to be the lower case equivalents of the characters []\,
 985  *  respectively. This is a critical issue when determining the
 986  *  equivalence of two nicknames.
 987  */
 988
 989 void strlower(char *n)
 990 {
 991         if (!n)
 992         {
 993                 return;
 994         }
 995         for (int i = 0; i != strlen(n); i++)
 996         {
 997                 n[i] = tolower(n[i]);
 998                 if (n[i] == '[')
 999                         n[i] = '{';
1000                 if (n[i] == ']')
1001                         n[i] = '}';
1002                 if (n[i] == '\\')
1003                         n[i] = '|';
1004         }
1005 }
1006
1007 /* verify that a user's ident and nickname is valid */
1008
1009 int isident(const char* n)
1010 {
1011         char v[MAXBUF];
1012         if (!n)
1013
1014         {
1015                 return 0;
1016         }
1017         if (!strcmp(n,""))
1018         {
1019                 return 0;
1020         }
1021         for (int i = 0; i != strlen(n); i++)
1022         {
1023                 if ((n[i] < 33) || (n[i] > 125))
1024                 {
1025                         return 0;
1026                 }
1027                 /* can't occur ANYWHERE in an Ident! */
1028                 if (strchr("<>,./?:;@'~#=+()*&%$£ \"!",n[i]))
1029                 {
1030                         return 0;
1031                 }
1032         }
1033         return 1;
1034 }
1035
1036
1037 int isnick(const char* n)
1038 {
1039         int i = 0;
1040         char v[MAXBUF];
1041         if (!n)
1042         {
1043                 return 0;
1044         }
1045         if (!strcmp(n,""))
1046         {
1047                 return 0;
1048         }
1049         if (strlen(n) > NICKMAX-1)
1050         {
1051                 return 0;
1052         }
1053         for (int i = 0; i != strlen(n); i++)
1054         {
1055                 if ((n[i] < 33) || (n[i] > 125))
1056                 {
1057                         return 0;
1058                 }
1059                 /* can't occur ANYWHERE in a nickname! */
1060                 if (strchr("<>,./?:;@'~#=+()*&%$£ \"!",n[i]))
1061                 {
1062                         return 0;
1063                 }
1064                 /* can't occur as the first char of a nickname... */
1065                 if ((strchr("0123456789",n[i])) && (!i))
1066                 {
1067                         return 0;
1068                 }
1069         }
1070         return 1;
1071 }
1072
1073 /* Find a user record by nickname and return a pointer to it */
1074
1075 userrec* Find(string nick)
1076 {
1077         user_hash::iterator iter = clientlist.find(nick);
1078
1079         if (iter == clientlist.end())
1080                 /* Couldn't find it */
1081                 return NULL;
1082
1083         return iter->second;
1084 }
1085
1086 void update_stats_l(int fd,int data_out) /* add one line-out to stats L for this fd */
1087 {
1088         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1089         {
1090                 if (i->second)
1091                 {
1092                         if (i->second->fd == fd)
1093                         {
1094                                 i->second->bytes_out+=data_out;
1095                                 i->second->cmds_out++;
1096                         }
1097                 }
1098         }
1099 }
1100
1101
1102 /* find a channel record by channel name and return a pointer to it */
1103
1104 chanrec* FindChan(const char* chan)
1105 {
1106         if (!chan)
1107         {
1108                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1109                 return NULL;
1110         }
1111
1112         chan_hash::iterator iter = chanlist.find(chan);
1113
1114         if (iter == chanlist.end())
1115                 /* Couldn't find it */
1116                 return NULL;
1117
1118         return iter->second;
1119 }
1120
1121
1122 void purge_empty_chans(void)
1123 {
1124         int go_again = 1, purge = 0;
1125
1126         while (go_again)
1127         {
1128                 go_again = 0;
1129                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1130                 {
1131                         if (i->second) {
1132                                 if (!usercount(i->second))
1133                                 {
1134                                         /* kill the record */
1135                                         if (i != chanlist.end())
1136                                         {
1137                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1138                                                 delete i->second;
1139                                                 chanlist.erase(i);
1140                                                 go_again = 1;
1141                                                 purge++;
1142                                                 break;
1143                                         }
1144                                 }
1145                                 else
1146                                 {
1147                                         log(DEBUG,"skipped purge for %s",i->second->name);
1148                                 }
1149                         }
1150                 }
1151         }
1152         log(DEBUG,"completed channel purge, killed %d",purge);
1153 }
1154
1155 /* returns the status character for a given user on a channel, e.g. @ for op,
1156  * % for halfop etc. If the user has several modes set, the highest mode
1157  * the user has must be returned. */
1158
1159 char* cmode(userrec *user, chanrec *chan)
1160 {
1161         if ((!user) || (!chan))
1162         {
1163                 log(DEFAULT,"*** BUG *** cmode was given an invalid parameter");
1164                 return "";
1165         }
1166
1167         int i;
1168         for (int i = 0; i != MAXCHANS; i++)
1169         {
1170                 if ((user->chans[i].channel == chan) && (chan != NULL))
1171                 {
1172                         if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
1173                         {
1174                                 return "@";
1175                         }
1176                         if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
1177                         {
1178                                 return "%";
1179                         }
1180                         if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
1181                         {
1182                                 return "+";
1183                         }
1184                         return "";
1185                 }
1186         }
1187 }
1188
1189 char scratch[MAXBUF];
1190 char sparam[MAXBUF];
1191
1192 char* chanmodes(chanrec *chan)
1193 {
1194         if (!chan)
1195         {
1196                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1197                 strcpy(scratch,"");
1198                 return scratch;
1199         }
1200
1201         strcpy(scratch,"");
1202         strcpy(sparam,"");
1203         if (chan->noexternal)
1204         {
1205                 strncat(scratch,"n",MAXMODES);
1206         }
1207         if (chan->topiclock)
1208         {
1209                 strncat(scratch,"t",MAXMODES);
1210         }
1211         if (strcmp(chan->key,""))
1212         {
1213                 strncat(scratch,"k",MAXMODES);
1214         }
1215         if (chan->limit)
1216         {
1217                 strncat(scratch,"l",MAXMODES);
1218         }
1219         if (chan->inviteonly)
1220         {
1221                 strncat(scratch,"i",MAXMODES);
1222         }
1223         if (chan->moderated)
1224         {
1225                 strncat(scratch,"m",MAXMODES);
1226         }
1227         if (chan->secret)
1228         {
1229                 strncat(scratch,"s",MAXMODES);
1230         }
1231         if (chan->c_private)
1232         {
1233                 strncat(scratch,"p",MAXMODES);
1234         }
1235         if (strcmp(chan->key,""))
1236         {
1237                 strncat(sparam,chan->key,MAXBUF);
1238         }
1239         if (chan->limit)
1240         {
1241                 char foo[24];
1242                 sprintf(foo," %d",chan->limit);
1243                 strncat(sparam,foo,MAXBUF);
1244         }
1245         if (strlen(chan->custom_modes))
1246         {
1247                 strncat(scratch,chan->custom_modes,MAXMODES);
1248                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1249                 {
1250                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1251                         if (extparam != "")
1252                         {
1253                                 strncat(sparam," ",MAXBUF);
1254                                 strncat(sparam,extparam.c_str(),MAXBUF);
1255                         }
1256                 }
1257         }
1258         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1259         strncat(scratch,sparam,MAXMODES);
1260         return scratch;
1261 }
1262
1263 /* returns the status value for a given user on a channel, e.g. STATUS_OP for
1264  * op, STATUS_VOICE for voice etc. If the user has several modes set, the
1265  * highest mode the user has must be returned. */
1266
1267 int cstatus(userrec *user, chanrec *chan)
1268 {
1269         if ((!chan) || (!user))
1270         {
1271                 log(DEFAULT,"*** BUG *** cstatus was given an invalid parameter");
1272                 return 0;
1273         }
1274
1275         for (int i = 0; i != MAXCHANS; i++)
1276         {
1277                 if ((user->chans[i].channel == chan) && (chan != NULL))
1278                 {
1279                         if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
1280                         {
1281                                 return STATUS_OP;
1282                         }
1283                         if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
1284                         {
1285                                 return STATUS_HOP;
1286                         }
1287                         if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
1288                         {
1289                                 return STATUS_VOICE;
1290                         }
1291                         return STATUS_NORMAL;
1292                 }
1293         }
1294 }
1295
1296
1297 /* compile a userlist of a channel into a string, each nick seperated by
1298  * spaces and op, voice etc status shown as @ and + */
1299
1300 void userlist(userrec *user,chanrec *c)
1301 {
1302         if ((!c) || (!user))
1303         {
1304                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1305                 return;
1306         }
1307
1308         sprintf(list,"353 %s = %s :", user->nick, c->name);
1309         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1310         {
1311                 if (has_channel(i->second,c))
1312                 {
1313                         if (isnick(i->second->nick))
1314                         {
1315                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1316                                 {
1317                                         /* user is +i, and source not on the channel, does not show
1318                                          * nick in NAMES list */
1319                                         continue;
1320                                 }
1321                                 strcat(list,cmode(i->second,c));
1322                                 strcat(list,i->second->nick);
1323                                 strcat(list," ");
1324                                 if (strlen(list)>(480-NICKMAX))
1325                                 {
1326                                         /* list overflowed into
1327                                          * multiple numerics */
1328                                         WriteServ(user->fd,list);
1329                                         sprintf(list,"353 %s = %s :", user->nick, c->name);
1330                                 }
1331                         }
1332                 }
1333         }
1334         /* if whats left in the list isnt empty, send it */
1335         if (list[strlen(list)-1] != ':')
1336         {
1337                 WriteServ(user->fd,list);
1338         }
1339 }
1340
1341 /* return a count of the users on a specific channel accounting for
1342  * invisible users who won't increase the count. e.g. for /LIST */
1343
1344 int usercount_i(chanrec *c)
1345 {
1346         int i = 0;
1347         int count = 0;
1348
1349         if (!c)
1350         {
1351                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1352                 return 0;
1353         }
1354
1355         strcpy(list,"");
1356         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1357         {
1358                 if (i->second)
1359                 {
1360                         if (has_channel(i->second,c))
1361                         {
1362                                 if (isnick(i->second->nick))
1363                                 {
1364                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1365                                         {
1366                                                 /* user is +i, and source not on the channel, does not show
1367                                                  * nick in NAMES list */
1368                                                 continue;
1369                                         }
1370                                         count++;
1371                                 }
1372                         }
1373                 }
1374         }
1375         log(DEBUG,"usercount_i: %s %d",c->name,count);
1376         return count;
1377 }
1378
1379
1380 int usercount(chanrec *c)
1381 {
1382         int i = 0;
1383         int count = 0;
1384
1385         if (!c)
1386         {
1387                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1388                 return 0;
1389         }
1390
1391         strcpy(list,"");
1392         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1393         {
1394                 if (i->second)
1395                 {
1396                         if (has_channel(i->second,c))
1397                         {
1398                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1399                                 {
1400                                         count++;
1401                                 }
1402                         }
1403                 }
1404         }
1405         log(DEBUG,"usercount: %s %d",c->name,count);
1406         return count;
1407 }
1408
1409
1410 /* add a channel to a user, creating the record for it if needed and linking
1411  * it to the user record */
1412
1413 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1414 {
1415         if ((!user) || (!cn))
1416         {
1417                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1418                 return 0;
1419         }
1420
1421         int i = 0;
1422         chanrec* Ptr;
1423         int created = 0;
1424         char cname[MAXBUF];
1425
1426         strncpy(cname,cn,MAXBUF);
1427
1428         // we MUST declare this wherever we use FOREACH_RESULT
1429         int MOD_RESULT = 0;
1430
1431         if (strlen(cname) > CHANMAX-1)
1432         {
1433                 cname[CHANMAX-1] = '\0';
1434         }
1435
1436         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1437
1438         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1439         {
1440                 return NULL; // already on the channel!
1441         }
1442
1443
1444         if (!FindChan(cname))
1445         {
1446                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1447                 if (MOD_RESULT) {
1448                         return NULL;
1449                 }
1450
1451                 /* create a new one */
1452                 log(DEBUG,"add_channel: creating: %s",cname);
1453                 {
1454                         chanlist[cname] = new chanrec();
1455
1456                         strcpy(chanlist[cname]->name, cname);
1457                         chanlist[cname]->topiclock = 1;
1458                         chanlist[cname]->noexternal = 1;
1459                         chanlist[cname]->created = time(NULL);
1460                         strcpy(chanlist[cname]->topic, "");
1461                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1462                         chanlist[cname]->topicset = 0;
1463                         Ptr = chanlist[cname];
1464                         log(DEBUG,"add_channel: created: %s",cname);
1465                         /* set created to 2 to indicate user
1466                          * is the first in the channel
1467                          * and should be given ops */
1468                         created = 2;
1469                 }
1470         }
1471         else
1472         {
1473                 /* channel exists, just fish out a pointer to its struct */
1474                 Ptr = FindChan(cname);
1475                 if (Ptr)
1476                 {
1477                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1478
1479                         // the override flag allows us to bypass channel modes
1480                         // and bans (used by servers)
1481                         if (!override)
1482                         {
1483                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1484                                 if (MOD_RESULT) {
1485                                         return NULL;
1486                                 }
1487
1488                                 if (strcmp(Ptr->key,""))
1489                                 {
1490                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1491                                         if (!key)
1492                                         {
1493                                                 log(DEBUG,"add_channel: no key given in JOIN");
1494                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1495                                                 return NULL;
1496                                         }
1497                                         else
1498                                         {
1499                                                 log(DEBUG,"key at %p is %s",key,key);
1500                                                 if (strcasecmp(key,Ptr->key))
1501                                                 {
1502                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1503                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1504                                                         return NULL;
1505                                                 }
1506                                         }
1507                                 }
1508                                 log(DEBUG,"add_channel: no key");
1509
1510                                 if (Ptr->inviteonly)
1511                                 {
1512                                         log(DEBUG,"add_channel: channel is +i");
1513                                         if (user->IsInvited(Ptr->name))
1514                                         {
1515                                                 /* user was invited to channel */
1516                                                 /* there may be an optional channel NOTICE here */
1517                                         }
1518                                         else
1519                                         {
1520                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1521                                                 return NULL;
1522                                         }
1523                                 }
1524                                 log(DEBUG,"add_channel: channel is not +i");
1525
1526                                 if (Ptr->limit)
1527                                 {
1528                                         if (usercount(Ptr) == Ptr->limit)
1529                                         {
1530                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1531                                                 return NULL;
1532                                         }
1533                                 }
1534
1535                                 log(DEBUG,"add_channel: about to walk banlist");
1536
1537                                 /* check user against the channel banlist */
1538                                 if (Ptr)
1539                                 {
1540                                         if (Ptr->bans.size())
1541                                         {
1542                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1543                                                 {
1544                                                         if (match(user->GetFullHost(),i->data))
1545                                                         {
1546                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1547                                                                 return NULL;
1548                                                         }
1549                                                 }
1550                                         }
1551                                 }
1552
1553                                 log(DEBUG,"add_channel: bans checked");
1554
1555
1556                                 if ((Ptr) && (user))
1557                                 {
1558                                         user->RemoveInvite(Ptr->name);
1559                                 }
1560
1561                                 log(DEBUG,"add_channel: invites removed");
1562
1563                         }
1564                         else
1565                         {
1566                                 log(DEBUG,"Overridden checks");
1567                         }
1568
1569
1570                 }
1571                 created = 1;
1572         }
1573
1574         log(DEBUG,"Passed channel checks");
1575
1576         for (int i =0; i != MAXCHANS; i++)
1577         {
1578                 log(DEBUG,"Check location %d",i);
1579                 if (user->chans[i].channel == NULL)
1580                 {
1581                         log(DEBUG,"Adding into their channel list at location %d",i);
1582
1583                         if (created == 2)
1584                         {
1585                                 /* first user in is given ops */
1586                                 user->chans[i].uc_modes = UCMODE_OP;
1587                         }
1588                         else
1589                         {
1590                                 user->chans[i].uc_modes = 0;
1591                         }
1592                         user->chans[i].channel = Ptr;
1593                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1594
1595                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1596                         {
1597                                 // use the stamdard J token with no privilages.
1598                                 char buffer[MAXBUF];
1599                                 snprintf(buffer,MAXBUF,"J %s :%s",user->nick,Ptr->name);
1600                                 for (int j = 0; j < 255; j++)
1601                                 {
1602                                         if (servers[j] != NULL)
1603                                         {
1604                                                 if (ChanAnyOnThisServer(Ptr,servers[j]->name))
1605                                                 {
1606                                                         me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
1607                                                         log(DEBUG,"Sent J token");
1608                                                 }
1609                                         }
1610                                 }
1611                         }
1612
1613                         log(DEBUG,"Sent JOIN to client");
1614
1615                         if (Ptr->topicset)
1616                         {
1617                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1618                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1619                         }
1620                         userlist(user,Ptr);
1621                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1622                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1623                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1624                         FOREACH_MOD OnUserJoin(user,Ptr);
1625                         return Ptr;
1626                 }
1627         }
1628         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1629         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1630         return NULL;
1631 }
1632
1633 /* remove a channel from a users record, and remove the record from memory
1634  * if the channel has become empty */
1635
1636 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1637 {
1638         if ((!user) || (!cname))
1639         {
1640                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1641                 return NULL;
1642         }
1643
1644         chanrec* Ptr;
1645         int created = 0;
1646
1647         if ((!cname) || (!user))
1648         {
1649                 return NULL;
1650         }
1651
1652         Ptr = FindChan(cname);
1653
1654         if (!Ptr)
1655         {
1656                 return NULL;
1657         }
1658
1659         FOREACH_MOD OnUserPart(user,Ptr);
1660         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1661
1662         for (int i =0; i != MAXCHANS; i++)
1663         {
1664                 /* zap it from the channel list of the user */
1665                 if (user->chans[i].channel == Ptr)
1666                 {
1667                         if (reason)
1668                         {
1669                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1670
1671                                 if (!local)
1672                                 {
1673                                         char buffer[MAXBUF];
1674                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1675                                         for (int j = 0; j < 255; j++)
1676                                         {
1677                                                 if (servers[j] != NULL)
1678                                                 {
1679                                                         if (ChanAnyOnThisServer(Ptr,servers[j]->name))
1680                                                         {
1681                                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
1682                                                                 log(DEBUG,"Sent L token (with reason)");
1683                                                         }
1684                                                 }
1685                                         }
1686                                 }
1687
1688
1689                         }
1690                         else
1691                         {
1692                                 if (!local)
1693                                 {
1694                                         char buffer[MAXBUF];
1695                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1696                                         for (int j = 0; j < 255; j++)
1697                                         {
1698                                                 if (servers[j] != NULL)
1699                                                 {
1700                                                 if (ChanAnyOnThisServer(Ptr,servers[j]->name))
1701                                                         {
1702                                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
1703                                                                 log(DEBUG,"Sent L token (no reason)");
1704                                                         }
1705                                                 }
1706                                         }
1707                                 }
1708
1709                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1710                         }
1711                         user->chans[i].uc_modes = 0;
1712                         user->chans[i].channel = NULL;
1713                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1714                         break;
1715                 }
1716         }
1717
1718         /* if there are no users left on the channel */
1719         if (!usercount(Ptr))
1720         {
1721                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1722
1723                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1724
1725                 /* kill the record */
1726                 if (iter != chanlist.end())
1727                 {
1728                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1729                         delete iter->second;
1730                         chanlist.erase(iter);
1731                 }
1732         }
1733 }
1734
1735
1736 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1737 {
1738         if ((!src) || (!user) || (!Ptr) || (!reason))
1739         {
1740                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1741                 return;
1742         }
1743
1744         int i = 0;
1745         int created = 0;
1746
1747         if ((!Ptr) || (!user) || (!src))
1748         {
1749                 return;
1750         }
1751
1752         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1753
1754         if (!has_channel(user,Ptr))
1755         {
1756                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1757                 return;
1758         }
1759         if ((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr)))
1760         {
1761                 if (cstatus(src,Ptr) == STATUS_HOP)
1762                 {
1763                         WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1764                 }
1765                 else
1766                 {
1767                         WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1768                 }
1769
1770                 return;
1771         }
1772
1773         for (int i =0; i != MAXCHANS; i++)
1774         {
1775                 /* zap it from the channel list of the user */
1776                 if (user->chans[i].channel == Ptr)
1777                 {
1778                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1779                         user->chans[i].uc_modes = 0;
1780                         user->chans[i].channel = NULL;
1781                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1782                         break;
1783                 }
1784         }
1785
1786         /* if there are no users left on the channel */
1787         if (!usercount(Ptr))
1788         {
1789                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1790
1791                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1792
1793                 /* kill the record */
1794                 if (iter != chanlist.end())
1795                 {
1796                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1797                         delete iter->second;
1798                         chanlist.erase(iter);
1799                 }
1800         }
1801 }
1802
1803
1804 /* returns 1 if user u has channel c in their record, 0 if not */
1805
1806 int has_channel(userrec *u, chanrec *c)
1807 {
1808         if ((!u) || (!c))
1809         {
1810                 log(DEFAULT,"*** BUG *** has_channel was given an invalid parameter");
1811                 return 0;
1812         }
1813         for (int i =0; i != MAXCHANS; i++)
1814         {
1815                 if (u->chans[i].channel == c)
1816                 {
1817                         return 1;
1818                 }
1819         }
1820         return 0;
1821 }
1822
1823 int give_ops(userrec *user,char *dest,chanrec *chan,int status)
1824 {
1825         userrec *d;
1826         int i;
1827
1828         if ((!user) || (!dest) || (!chan))
1829         {
1830                 log(DEFAULT,"*** BUG *** give_ops was given an invalid parameter");
1831                 return 0;
1832         }
1833         if (status != STATUS_OP)
1834         {
1835                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
1836                 return 0;
1837         }
1838         else
1839         {
1840                 if (!isnick(dest))
1841                 {
1842                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1843                         return 0;
1844                 }
1845                 d = Find(dest);
1846                 if (!d)
1847                 {
1848                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1849                         return 0;
1850                 }
1851                 else
1852                 {
1853                         for (int i = 0; i != MAXCHANS; i++)
1854                         {
1855                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1856                                 {
1857                                         if (d->chans[i].uc_modes & UCMODE_OP)
1858                                         {
1859                                                 /* mode already set on user, dont allow multiple */
1860                                                 return 0;
1861                                         }
1862                                         d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_OP;
1863                                         log(DEBUG,"gave ops: %s %s",d->chans[i].channel->name,d->nick);
1864                                 }
1865                         }
1866                 }
1867         }
1868         return 1;
1869 }
1870
1871 int give_hops(userrec *user,char *dest,chanrec *chan,int status)
1872 {
1873         userrec *d;
1874         int i;
1875
1876         if ((!user) || (!dest) || (!chan))
1877         {
1878                 log(DEFAULT,"*** BUG *** give_hops was given an invalid parameter");
1879                 return 0;
1880         }
1881         if (status != STATUS_OP)
1882         {
1883                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
1884                 return 0;
1885         }
1886         else
1887         {
1888                 d = Find(dest);
1889                 if (!isnick(dest))
1890                 {
1891                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1892                         return 0;
1893                 }
1894                 if (!d)
1895                 {
1896                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1897                         return 0;
1898                 }
1899                 else
1900                 {
1901                         for (int i = 0; i != MAXCHANS; i++)
1902                         {
1903                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1904                                 {
1905                                         if (d->chans[i].uc_modes & UCMODE_HOP)
1906                                         {
1907                                                 /* mode already set on user, dont allow multiple */
1908                                                 return 0;
1909                                         }
1910                                         d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_HOP;
1911                                         log(DEBUG,"gave h-ops: %s %s",d->chans[i].channel->name,d->nick);
1912                                 }
1913                         }
1914                 }
1915         }
1916         return 1;
1917 }
1918
1919 int give_voice(userrec *user,char *dest,chanrec *chan,int status)
1920 {
1921         userrec *d;
1922         int i;
1923
1924         if ((!user) || (!dest) || (!chan))
1925         {
1926                 log(DEFAULT,"*** BUG *** give_voice was given an invalid parameter");
1927                 return 0;
1928         }
1929         if (status < STATUS_HOP)
1930         {
1931                 WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
1932                 return 0;
1933         }
1934         else
1935         {
1936                 d = Find(dest);
1937                 if (!isnick(dest))
1938                 {
1939                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1940                         return 0;
1941                 }
1942                 if (!d)
1943                 {
1944                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1945                         return 0;
1946                 }
1947                 else
1948                 {
1949                         for (int i = 0; i != MAXCHANS; i++)
1950                         {
1951                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1952                                 {
1953                                         if (d->chans[i].uc_modes & UCMODE_VOICE)
1954                                         {
1955                                                 /* mode already set on user, dont allow multiple */
1956                                                 return 0;
1957                                         }
1958                                         d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_VOICE;
1959                                         log(DEBUG,"gave voice: %s %s",d->chans[i].channel->name,d->nick);
1960                                 }
1961                         }
1962                 }
1963         }
1964         return 1;
1965 }
1966
1967 int take_ops(userrec *user,char *dest,chanrec *chan,int status)
1968 {
1969         userrec *d;
1970         int i;
1971
1972         if ((!user) || (!dest) || (!chan))
1973         {
1974                 log(DEFAULT,"*** BUG *** take_ops was given an invalid parameter");
1975                 return 0;
1976         }
1977         if (status != STATUS_OP)
1978         {
1979                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
1980                 return 0;
1981         }
1982         else
1983         {
1984                 d = Find(dest);
1985                 if (!isnick(dest))
1986                 {
1987                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1988                         return 0;
1989                 }
1990                 if (!d)
1991                 {
1992                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1993                         return 0;
1994                 }
1995                 else
1996                 {
1997                         for (int i = 0; i != MAXCHANS; i++)
1998                         {
1999                                 if ((d->chans[i].channel == chan) && (chan != NULL))
2000                                 {
2001                                         if ((d->chans[i].uc_modes & UCMODE_OP) == 0)
2002                                         {
2003                                                 /* mode already set on user, dont allow multiple */
2004                                                 return 0;
2005                                         }
2006                                         d->chans[i].uc_modes ^= UCMODE_OP;
2007                                         log(DEBUG,"took ops: %s %s",d->chans[i].channel->name,d->nick);
2008                                 }
2009                         }
2010                 }
2011         }
2012         return 1;
2013 }
2014
2015 int take_hops(userrec *user,char *dest,chanrec *chan,int status)
2016 {
2017         userrec *d;
2018         int i;
2019
2020         if ((!user) || (!dest) || (!chan))
2021         {
2022                 log(DEFAULT,"*** BUG *** take_hops was given an invalid parameter");
2023                 return 0;
2024         }
2025         if (status != STATUS_OP)
2026         {
2027                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
2028                 return 0;
2029         }
2030         else
2031         {
2032                 d = Find(dest);
2033                 if (!isnick(dest))
2034                 {
2035                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
2036                         return 0;
2037                 }
2038                 if (!d)
2039                 {
2040                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
2041                         return 0;
2042                 }
2043                 else
2044                 {
2045                         for (int i = 0; i != MAXCHANS; i++)
2046                         {
2047                                 if ((d->chans[i].channel == chan) && (chan != NULL))
2048                                 {
2049                                         if ((d->chans[i].uc_modes & UCMODE_HOP) == 0)
2050                                         {
2051                                                 /* mode already set on user, dont allow multiple */
2052                                                 return 0;
2053                                         }
2054                                         d->chans[i].uc_modes ^= UCMODE_HOP;
2055                                         log(DEBUG,"took h-ops: %s %s",d->chans[i].channel->name,d->nick);
2056                                 }
2057                         }
2058                 }
2059         }
2060         return 1;
2061 }
2062
2063 int take_voice(userrec *user,char *dest,chanrec *chan,int status)
2064 {
2065         userrec *d;
2066         int i;
2067
2068         if ((!user) || (!dest) || (!chan))
2069         {
2070                 log(DEFAULT,"*** BUG *** take_voice was given an invalid parameter");
2071                 return 0;
2072         }
2073         if (status < STATUS_HOP)
2074         {
2075                 WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
2076                 return 0;
2077         }
2078         else
2079         {
2080                 d = Find(dest);
2081                 if (!isnick(dest))
2082                 {
2083                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
2084                         return 0;
2085                 }
2086                 if (!d)
2087                 {
2088                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
2089                         return 0;
2090                 }
2091                 else
2092                 {
2093                         for (int i = 0; i != MAXCHANS; i++)
2094                         {
2095                                 if ((d->chans[i].channel == chan) && (chan != NULL))
2096                                 {
2097                                         if ((d->chans[i].uc_modes & UCMODE_VOICE) == 0)
2098                                         {
2099                                                 /* mode already set on user, dont allow multiple */
2100                                                 return 0;
2101                                         }
2102                                         d->chans[i].uc_modes ^= UCMODE_VOICE;
2103                                         log(DEBUG,"took voice: %s %s",d->chans[i].channel->name,d->nick);
2104                                 }
2105                         }
2106                 }
2107         }
2108         return 1;
2109 }
2110
2111 void TidyBan(char *ban)
2112 {
2113         if (!ban) {
2114                 log(DEFAULT,"*** BUG *** TidyBan was given an invalid parameter");
2115                 return;
2116         }
2117
2118         char temp[MAXBUF],NICK[MAXBUF],IDENT[MAXBUF],HOST[MAXBUF];
2119
2120         strcpy(temp,ban);
2121
2122         char* pos_of_pling = strchr(temp,'!');
2123         char* pos_of_at = strchr(temp,'@');
2124
2125         pos_of_pling[0] = '\0';
2126         pos_of_at[0] = '\0';
2127         pos_of_pling++;
2128         pos_of_at++;
2129
2130         strncpy(NICK,temp,NICKMAX);
2131         strncpy(IDENT,pos_of_pling,IDENTMAX+1);
2132         strncpy(HOST,pos_of_at,160);
2133
2134         sprintf(ban,"%s!%s@%s",NICK,IDENT,HOST);
2135 }
2136
2137 int add_ban(userrec *user,char *dest,chanrec *chan,int status)
2138 {
2139         if ((!user) || (!dest) || (!chan)) {
2140                 log(DEFAULT,"*** BUG *** add_ban was given an invalid parameter");
2141                 return 0;
2142         }
2143
2144         BanItem b;
2145         if ((!user) || (!dest) || (!chan))
2146                 return 0;
2147         if (strchr(dest,'!')==0)
2148                 return 0;
2149         if (strchr(dest,'@')==0)
2150                 return 0;
2151         for (int i = 0; i < strlen(dest); i++)
2152                 if (dest[i] < 32)
2153                         return 0;
2154         for (int i = 0; i < strlen(dest); i++)
2155                 if (dest[i] > 126)
2156                         return 0;
2157         int c = 0;
2158         for (int i = 0; i < strlen(dest); i++)
2159                 if (dest[i] == '!')
2160                         c++;
2161         if (c>1)
2162                 return 0;
2163         c = 0;
2164         for (int i = 0; i < strlen(dest); i++)
2165                 if (dest[i] == '@')
2166                         c++;
2167         if (c>1)
2168                 return 0;
2169         log(DEBUG,"add_ban: %s %s",chan->name,user->nick);
2170
2171         TidyBan(dest);
2172         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
2173         {
2174                 if (!strcasecmp(i->data,dest))
2175                 {
2176                         // dont allow a user to set the same ban twice
2177                         return 0;
2178                 }
2179         }
2180
2181         b.set_time = time(NULL);
2182         strncpy(b.data,dest,MAXBUF);
2183         strncpy(b.set_by,user->nick,NICKMAX);
2184         chan->bans.push_back(b);
2185         return 1;
2186 }
2187
2188 int take_ban(userrec *user,char *dest,chanrec *chan,int status)
2189 {
2190         if ((!user) || (!dest) || (!chan)) {
2191                 log(DEFAULT,"*** BUG *** take_ban was given an invalid parameter");
2192                 return 0;
2193         }
2194
2195         log(DEBUG,"del_ban: %s %s",chan->name,user->nick);
2196         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
2197         {
2198                 if (!strcasecmp(i->data,dest))
2199                 {
2200                         chan->bans.erase(i);
2201                         return 1;
2202                 }
2203         }
2204         return 0;
2205 }
2206
2207 void process_modes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent)
2208 {
2209         if (!parameters) {
2210                 log(DEFAULT,"*** BUG *** process_modes was given an invalid parameter");
2211                 return;
2212         }
2213
2214         char modelist[MAXBUF];
2215         char outlist[MAXBUF];
2216         char outstr[MAXBUF];
2217         char outpars[32][MAXBUF];
2218         int param = 2;
2219         int pc = 0;
2220         int ptr = 0;
2221         int mdir = 1;
2222         int r = 0;
2223         bool k_set = false, l_set = false;
2224
2225         if (pcnt < 2)
2226         {
2227                 return;
2228         }
2229
2230         log(DEBUG,"process_modes: start");
2231
2232         strcpy(modelist,parameters[1]); /* mode list, e.g. +oo-o */
2233                                         /* parameters[2] onwards are parameters for
2234                                          * modes that require them :) */
2235         strcpy(outlist,"+");
2236         mdir = 1;
2237
2238         log(DEBUG,"process_modes: modelist: %s",modelist);
2239
2240         for (ptr = 0; ptr < strlen(modelist); ptr++)
2241         {
2242                 r = 0;
2243
2244                 {
2245                         log(DEBUG,"process_modes: modechar: %c",modelist[ptr]);
2246                         char modechar = modelist[ptr];
2247                         switch (modelist[ptr])
2248                         {
2249                                 case '-':
2250                                         if (mdir != 0)
2251                                         {
2252                                                 if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-'))
2253                                                 {
2254                                                         outlist[strlen(outlist)-1] = '-';
2255                                                 }
2256                                                 else
2257                                                 {
2258                                                         strcat(outlist,"-");
2259                                                 }
2260                                         }
2261                                         mdir = 0;
2262
2263                                 break;
2264
2265                                 case '+':
2266                                         if (mdir != 1)
2267                                         {
2268                                                 if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-'))
2269                                                 {
2270                                                         outlist[strlen(outlist)-1] = '+';
2271                                                 }
2272                                                 else
2273                                                 {
2274                                                         strcat(outlist,"+");
2275                                                 }
2276                                         }
2277                                         mdir = 1;
2278                                 break;
2279
2280                                 case 'o':
2281                                         if ((param >= pcnt)) break;
2282                                         if (mdir == 1)
2283                                         {
2284                                                 r = give_ops(user,parameters[param++],chan,status);
2285                                         }
2286                                         else
2287                                         {
2288                                                 r = take_ops(user,parameters[param++],chan,status);
2289                                         }
2290                                         if (r)
2291                                         {
2292                                                 strcat(outlist,"o");
2293                                                 strcpy(outpars[pc++],parameters[param-1]);
2294                                         }
2295                                 break;
2296
2297                                 case 'h':
2298                                         if ((param >= pcnt)) break;
2299                                         if (mdir == 1)
2300                                         {
2301                                                 r = give_hops(user,parameters[param++],chan,status);
2302                                         }
2303                                         else
2304                                         {
2305                                                 r = take_hops(user,parameters[param++],chan,status);
2306                                         }
2307                                         if (r)
2308                                         {
2309                                                 strcat(outlist,"h");
2310                                                 strcpy(outpars[pc++],parameters[param-1]);
2311                                         }
2312                                 break;
2313
2314
2315                                 case 'v':
2316                                         if ((param >= pcnt)) break;
2317                                         if (mdir == 1)
2318                                         {
2319                                                 r = give_voice(user,parameters[param++],chan,status);
2320                                         }
2321                                         else
2322                                         {
2323                                                 r = take_voice(user,parameters[param++],chan,status);
2324                                         }
2325                                         if (r)
2326                                         {
2327                                                 strcat(outlist,"v");
2328                                                 strcpy(outpars[pc++],parameters[param-1]);
2329                                         }
2330                                 break;
2331
2332                                 case 'b':
2333                                         if ((param >= pcnt)) break;
2334                                         if (mdir == 1)
2335                                         {
2336                                                 r = add_ban(user,parameters[param++],chan,status);
2337                                         }
2338                                         else
2339                                         {
2340                                                 r = take_ban(user,parameters[param++],chan,status);
2341                                         }
2342                                         if (r)
2343                                         {
2344                                                 strcat(outlist,"b");
2345                                                 strcpy(outpars[pc++],parameters[param-1]);
2346                                         }
2347                                 break;
2348
2349
2350                                 case 'k':
2351                                         if ((param >= pcnt))
2352                                                 break;
2353
2354                                         if (mdir == 1)
2355                                         {
2356                                                 if (k_set)
2357                                                         break;
2358
2359                                                 if (!strcmp(chan->key,""))
2360                                                 {
2361                                                         strcat(outlist,"k");
2362                                                         char key[MAXBUF];
2363                                                         strcpy(key,parameters[param++]);
2364                                                         if (strlen(key)>32) {
2365                                                                 key[31] = '\0';
2366                                                         }
2367                                                         strcpy(outpars[pc++],key);
2368                                                         strcpy(chan->key,key);
2369                                                         k_set = true;
2370                                                 }
2371                                         }
2372                                         else
2373                                         {
2374                                                 /* checks on -k are case sensitive and only accurate to the
2375                                                    first 32 characters */
2376                                                 char key[MAXBUF];
2377                                                 strcpy(key,parameters[param++]);
2378                                                 if (strlen(key)>32) {
2379                                                         key[31] = '\0';
2380                                                 }
2381                                                 /* only allow -k if correct key given */
2382                                                 if (!strcmp(chan->key,key))
2383                                                 {
2384                                                         strcat(outlist,"k");
2385                                                         strcpy(chan->key,"");
2386                                                         strcpy(outpars[pc++],key);
2387                                                 }
2388                                         }
2389                                 break;
2390
2391                                 case 'l':
2392                                         if (mdir == 0)
2393                                         {
2394                                                 if (chan->limit)
2395                                                 {
2396                                                         strcat(outlist,"l");
2397                                                         chan->limit = 0;
2398                                                 }
2399                                         }
2400
2401                                         if ((param >= pcnt)) break;
2402                                         if (mdir == 1)
2403                                         {
2404                                                 if (l_set)
2405                                                         break;
2406
2407                                                 bool invalid = false;
2408                                                 for (int i = 0; i < strlen(parameters[param]); i++)
2409                                                 {
2410                                                         if ((parameters[param][i] < '0') || (parameters[param][i] > '9'))
2411                                                         {
2412                                                                 invalid = true;
2413                                                         }
2414                                                 }
2415                                                 if (atoi(parameters[param]) < 1)
2416                                                 {
2417                                                         invalid = true;
2418                                                 }
2419
2420                                                 if (invalid)
2421                                                         break;
2422
2423                                                 chan->limit = atoi(parameters[param]);
2424                                                 if (chan->limit)
2425                                                 {
2426                                                         strcat(outlist,"l");
2427                                                         strcpy(outpars[pc++],parameters[param++]);
2428                                                         l_set = true;
2429                                                 }
2430                                         }
2431                                 break;
2432
2433                                 case 'i':
2434                                         if (chan->inviteonly != mdir)
2435                                         {
2436                                                 strcat(outlist,"i");
2437                                         }
2438                                         chan->inviteonly = mdir;
2439                                 break;
2440
2441                                 case 't':
2442                                         if (chan->topiclock != mdir)
2443                                         {
2444                                                 strcat(outlist,"t");
2445                                         }
2446                                         chan->topiclock = mdir;
2447                                 break;
2448
2449                                 case 'n':
2450                                         if (chan->noexternal != mdir)
2451                                         {
2452                                                 strcat(outlist,"n");
2453                                         }
2454                                         chan->noexternal = mdir;
2455                                 break;
2456
2457                                 case 'm':
2458                                         if (chan->moderated != mdir)
2459                                         {
2460                                                 strcat(outlist,"m");
2461                                         }
2462                                         chan->moderated = mdir;
2463                                 break;
2464
2465                                 case 's':
2466                                         if (chan->secret != mdir)
2467                                         {
2468                                                 strcat(outlist,"s");
2469                                                 if (chan->c_private)
2470                                                 {
2471                                                         chan->c_private = 0;
2472                                                         if (mdir)
2473                                                         {
2474                                                                 strcat(outlist,"-p+");
2475                                                         }
2476                                                         else
2477                                                         {
2478                                                                 strcat(outlist,"+p-");
2479                                                         }
2480                                                 }
2481                                         }
2482                                         chan->secret = mdir;
2483                                 break;
2484
2485                                 case 'p':
2486                                         if (chan->c_private != mdir)
2487                                         {
2488                                                 strcat(outlist,"p");
2489                                                 if (chan->secret)
2490                                                 {
2491                                                         chan->secret = 0;
2492                                                         if (mdir)
2493                                                         {
2494                                                                 strcat(outlist,"-s+");
2495                                                         }
2496                                                         else
2497                                                         {
2498                                                                 strcat(outlist,"+s-");
2499                                                         }
2500                                                 }
2501                                         }
2502                                         chan->c_private = mdir;
2503                                 break;
2504
2505                                 default:
2506                                         log(DEBUG,"Preprocessing custom mode %c",modechar);
2507                                         string_list p;
2508                                         p.clear();
2509                                         if (((!strchr(chan->custom_modes,modechar)) && (!mdir)) || ((strchr(chan->custom_modes,modechar)) && (mdir)))
2510                                         {
2511                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",modechar,chan->name);
2512                                                 break;
2513                                         }
2514                                         if (ModeDefined(modechar,MT_CHANNEL))
2515                                         {
2516                                                 log(DEBUG,"A module has claimed this mode");
2517                                                 if (param<pcnt)
2518                                                 {
2519                                                         if ((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir))
2520                                                         {
2521                                                                 p.push_back(parameters[param]);
2522                                                         }
2523                                                         if ((ModeDefinedOff(modechar,MT_CHANNEL)>0) && (!mdir))
2524                                                         {
2525                                                                 p.push_back(parameters[param]);
2526                                                         }
2527                                                 }
2528                                                 bool handled = false;
2529                                                 if (param>=pcnt)
2530                                                 {
2531                                                         log(DEBUG,"Not enough parameters for module-mode %c",modechar);
2532                                                         // we're supposed to have a parameter, but none was given... so dont handle the mode.
2533                                                         if (((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(modechar,MT_CHANNEL)>0) && (!mdir)))
2534                                                         {
2535                                                                 handled = true;
2536                                                                 param++;
2537                                                         }
2538                                                 }
2539                                                 for (int i = 0; i <= MODCOUNT; i++)
2540                                                 {
2541                                                         if (!handled)
2542                                                         {
2543                                                                 if (modules[i]->OnExtendedMode(user,chan,modechar,MT_CHANNEL,mdir,p))
2544                                                                 {
2545                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
2546                                                                         char app[] = {modechar, 0};
2547                                                                         if (ptr>0)
2548                                                                         {
2549                                                                                 if ((modelist[ptr-1] == '+') || (modelist[ptr-1] == '-'))
2550                                                                                 {
2551                                                                                         strcat(outlist, app);
2552                                                                                 }
2553                                                                                 else if (!strchr(outlist,modechar))
2554                                                                                 {
2555                                                                                         strcat(outlist, app);
2556                                                                                 }
2557                                                                         }
2558                                                                         chan->SetCustomMode(modechar,mdir);
2559                                                                         // include parameters in output if mode has them
2560                                                                         if ((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir))
2561                                                                         {
2562                                                                                 chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir);
2563                                                                                 strcpy(outpars[pc++],parameters[param++]);
2564                                                                         }
2565                                                                         // break, because only one module can handle the mode.
2566                                                                         handled = true;
2567                                                                 }
2568                                                         }
2569                                                 }
2570                                         }
2571                                 break;
2572
2573                         }
2574                 }
2575         }
2576
2577         /* this ensures only the *valid* modes are sent out onto the network */
2578         while ((outlist[strlen(outlist)-1] == '-') || (outlist[strlen(outlist)-1] == '+'))
2579         {
2580                 outlist[strlen(outlist)-1] = '\0';
2581         }
2582         if (strcmp(outlist,""))
2583         {
2584                 strcpy(outstr,outlist);
2585                 for (ptr = 0; ptr < pc; ptr++)
2586                 {
2587                         strcat(outstr," ");
2588                         strcat(outstr,outpars[ptr]);
2589                 }
2590                 if (servermode)
2591                 {
2592                         if (!silent)
2593                                 WriteChannelWithServ(ServerName,chan,user,"MODE %s %s",chan->name,outstr);
2594                 }
2595                 else
2596                 {
2597                         if (!silent)
2598                                 WriteChannel(chan,user,"MODE %s %s",chan->name,outstr);
2599                 }
2600         }
2601 }
2602
2603 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
2604
2605 bool allowed_umode(char umode, char* sourcemodes,bool adding)
2606 {
2607         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
2608         // RFC1459 specified modes
2609         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
2610         {
2611                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
2612                 return true;
2613         }
2614
2615         // user may not +o themselves or others, but an oper may de-oper other opers or themselves
2616         if ((strchr(sourcemodes,'o')) && (!adding))
2617         {
2618                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
2619                 return true;
2620         }
2621         else if (umode == 'o')
2622         {
2623                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
2624                 return false;
2625         }
2626
2627         // process any module-defined modes that need oper
2628         if ((ModeDefinedOper(umode,MT_CLIENT)) && (strchr(sourcemodes,'o')))
2629         {
2630                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
2631                 return true;
2632         }
2633         else
2634         if (ModeDefined(umode,MT_CLIENT))
2635         {
2636                 // process any module-defined modes that don't need oper
2637                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
2638                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!strchr(sourcemodes,'o')))
2639                 {
2640                         // no, this mode needs oper, and this user 'aint got what it takes!
2641                         return false;
2642                 }
2643                 return true;
2644         }
2645
2646         // anything else - return false.
2647         log(DEBUG,"umode %c not known by any ruleset",umode);
2648         return false;
2649 }
2650
2651 bool process_module_umode(char umode, userrec* source, void* dest, bool adding)
2652 {
2653         userrec* s2;
2654         bool faked = false;
2655         if (!source)
2656         {
2657                 s2 = new userrec;
2658                 strncpy(s2->nick,ServerName,NICKMAX);
2659                 strcpy(s2->modes,"o");
2660                 s2->fd = -1;
2661                 source = s2;
2662                 faked = true;
2663         }
2664         string_list p;
2665         p.clear();
2666         if (ModeDefined(umode,MT_CLIENT))
2667         {
2668                 for (int i = 0; i <= MODCOUNT; i++)
2669                 {
2670                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
2671                         {
2672                                 log(DEBUG,"Module claims umode %c",umode);
2673                                 return true;
2674                         }
2675                 }
2676                 log(DEBUG,"No module claims umode %c",umode);
2677                 if (faked)
2678                 {
2679                         delete s2;
2680                         source = NULL;
2681                 }
2682                 return false;
2683         }
2684         else
2685         {
2686                 log(DEBUG,"*** BUG *** Non-module umode passed to process_module_umode!");
2687                 if (faked)
2688                 {
2689                         delete s2;
2690                         source = NULL;
2691                 }
2692                 return false;
2693         }
2694 }
2695
2696 void handle_mode(char **parameters, int pcnt, userrec *user)
2697 {
2698         chanrec* Ptr;
2699         userrec* dest;
2700         int can_change,i;
2701         int direction = 1;
2702         char outpars[MAXBUF];
2703
2704         dest = Find(parameters[0]);
2705
2706         if (!user)
2707         {
2708                 return;
2709         }
2710
2711         if ((dest) && (pcnt == 1))
2712         {
2713                 WriteServ(user->fd,"221 %s :+%s",user->nick,user->modes);
2714                 return;
2715         }
2716
2717         if ((dest) && (pcnt > 1))
2718         {
2719                 char dmodes[MAXBUF];
2720                 strncpy(dmodes,dest->modes,MAXBUF);
2721                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
2722
2723                 can_change = 0;
2724                 if (user != dest)
2725                 {
2726                         if (strchr(user->modes,'o'))
2727                         {
2728                                 can_change = 1;
2729                         }
2730                 }
2731                 else
2732                 {
2733                         can_change = 1;
2734                 }
2735                 if (!can_change)
2736                 {
2737                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
2738                         return;
2739                 }
2740
2741                 strcpy(outpars,"+");
2742                 direction = 1;
2743
2744                 if ((parameters[1][0] != '+') && (parameters[1][0] != '-'))
2745                         return;
2746
2747                 for (int i = 0; i < strlen(parameters[1]); i++)
2748                 {
2749                         if (parameters[1][i] == '+')
2750                         {
2751                                 if (direction != 1)
2752                                 {
2753                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2754                                         {
2755                                                 outpars[strlen(outpars)-1] = '+';
2756                                         }
2757                                         else
2758                                         {
2759                                                 strcat(outpars,"+");
2760                                         }
2761                                 }
2762                                 direction = 1;
2763                         }
2764                         else
2765                         if (parameters[1][i] == '-')
2766                         {
2767                                 if (direction != 0)
2768                                 {
2769                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2770                                         {
2771                                                 outpars[strlen(outpars)-1] = '-';
2772                                         }
2773                                         else
2774                                         {
2775                                                 strcat(outpars,"-");
2776                                         }
2777                                 }
2778                                 direction = 0;
2779                         }
2780                         else
2781                         {
2782                                 can_change = 0;
2783                                 if (strchr(user->modes,'o'))
2784                                 {
2785                                         can_change = 1;
2786                                 }
2787                                 else
2788                                 {
2789                                         if ((parameters[1][i] == 'i') || (parameters[1][i] == 'w') || (parameters[1][i] == 's') || (allowed_umode(parameters[1][i],user->modes,direction)))
2790                                         {
2791                                                 can_change = 1;
2792                                         }
2793                                 }
2794                                 if (can_change)
2795                                 {
2796                                         if (direction == 1)
2797                                         {
2798                                                 if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],user->modes,true)))
2799                                                 {
2800                                                         char umode = parameters[1][i];
2801                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
2802                                                         {
2803                                                                 dmodes[strlen(dmodes)+1]='\0';
2804                                                                 dmodes[strlen(dmodes)] = parameters[1][i];
2805                                                                 outpars[strlen(outpars)+1]='\0';
2806                                                                 outpars[strlen(outpars)] = parameters[1][i];
2807                                                         }
2808                                                 }
2809                                         }
2810                                         else
2811                                         {
2812                                                 if ((allowed_umode(parameters[1][i],user->modes,false)) && (strchr(dmodes,parameters[1][i])))
2813                                                 {
2814                                                         char umode = parameters[1][i];
2815                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
2816                                                         {
2817                                                                 int q = 0;
2818                                                                 char temp[MAXBUF];
2819                                                                 char moo[MAXBUF];
2820
2821                                                                 outpars[strlen(outpars)+1]='\0';
2822                                                                 outpars[strlen(outpars)] = parameters[1][i];
2823
2824                                                                 strcpy(temp,"");
2825                                                                 for (q = 0; q < strlen(dmodes); q++)
2826                                                                 {
2827                                                                         if (dmodes[q] != parameters[1][i])
2828                                                                         {
2829                                                                                 moo[0] = dmodes[q];
2830                                                                                 moo[1] = '\0';
2831                                                                                 strcat(temp,moo);
2832                                                                         }
2833                                                                 }
2834                                                                 strcpy(dmodes,temp);
2835                                                         }
2836                                                 }
2837                                         }
2838                                 }
2839                         }
2840                 }
2841                 if (strlen(outpars))
2842                 {
2843                         char b[MAXBUF];
2844                         strcpy(b,"");
2845                         int z = 0;
2846                         int i = 0;
2847                         while (i < strlen (outpars))
2848                         {
2849                                 b[z++] = outpars[i++];
2850                                 b[z] = '\0';
2851                                 if (i<strlen(outpars)-1)
2852                                 {
2853                                         if (((outpars[i] == '-') || (outpars[i] == '+')) && ((outpars[i+1] == '-') || (outpars[i+1] == '+')))
2854                                         {
2855                                                 // someones playing silly buggers and trying
2856                                                 // to put a +- or -+ into the line...
2857                                                 i++;
2858                                         }
2859                                 }
2860                                 if (i == strlen(outpars)-1)
2861                                 {
2862                                         if ((outpars[i] == '-') || (outpars[i] == '+'))
2863                                         {
2864                                                 i++;
2865                                         }
2866                                 }
2867                         }
2868
2869                         z = strlen(b)-1;
2870                         if ((b[z] == '-') || (b[z] == '+'))
2871                                 b[z] == '\0';
2872
2873                         if ((!strcmp(b,"+")) || (!strcmp(b,"-")))
2874                                 return;
2875
2876                         WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
2877
2878                         if (strlen(dmodes)>MAXMODES)
2879                         {
2880                                 dmodes[MAXMODES-1] = '\0';
2881                         }
2882                         log(DEBUG,"Stripped mode line");
2883                         log(DEBUG,"Line dest is now %s",dmodes);
2884                         strncpy(dest->modes,dmodes,MAXMODES);
2885
2886                 }
2887
2888                 return;
2889         }
2890
2891         Ptr = FindChan(parameters[0]);
2892         if (Ptr)
2893         {
2894                 if (pcnt == 1)
2895                 {
2896                         /* just /modes #channel */
2897                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr));
2898                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
2899                         return;
2900                 }
2901                 else
2902                 if (pcnt == 2)
2903                 {
2904                         if ((!strcmp(parameters[1],"+b")) || (!strcmp(parameters[1],"b")))
2905                         {
2906
2907                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
2908                                 {
2909                                         WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
2910                                 }
2911                                 WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
2912                         }
2913                 }
2914
2915                 if ((cstatus(user,Ptr) < STATUS_HOP) && (Ptr))
2916                 {
2917                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name);
2918                         return;
2919                 }
2920
2921                 process_modes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false);
2922         }
2923         else
2924         {
2925                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
2926         }
2927 }
2928
2929
2930
2931
2932 void server_mode(char **parameters, int pcnt, userrec *user)
2933 {
2934         chanrec* Ptr;
2935         userrec* dest;
2936         int can_change,i;
2937         int direction = 1;
2938         char outpars[MAXBUF];
2939
2940         dest = Find(parameters[0]);
2941
2942         // fix: ChroNiCk found this - we cant use this as debug if its null!
2943         if (dest)
2944         {
2945                 log(DEBUG,"server_mode on %s",dest->nick);
2946         }
2947
2948         if ((dest) && (pcnt > 1))
2949         {
2950                 log(DEBUG,"params > 1");
2951
2952                 char dmodes[MAXBUF];
2953                 strncpy(dmodes,dest->modes,MAXBUF);
2954
2955                 strcpy(outpars,"+");
2956                 direction = 1;
2957
2958                 if ((parameters[1][0] != '+') && (parameters[1][0] != '-'))
2959                         return;
2960
2961                 for (int i = 0; i < strlen(parameters[1]); i++)
2962                 {
2963                         if (parameters[1][i] == '+')
2964                         {
2965                                 if (direction != 1)
2966                                 {
2967                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2968                                         {
2969                                                 outpars[strlen(outpars)-1] = '+';
2970                                         }
2971                                         else
2972                                         {
2973                                                 strcat(outpars,"+");
2974                                         }
2975                                 }
2976                                 direction = 1;
2977                         }
2978                         else
2979                         if (parameters[1][i] == '-')
2980                         {
2981                                 if (direction != 0)
2982                                 {
2983                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2984                                         {
2985                                                 outpars[strlen(outpars)-1] = '-';
2986                                         }
2987                                         else
2988                                         {
2989                                                 strcat(outpars,"-");
2990                                         }
2991                                 }
2992                                 direction = 0;
2993                         }
2994                         else
2995                         {
2996                                 log(DEBUG,"begin mode processing entry");
2997                                 can_change = 1;
2998                                 if (can_change)
2999                                 {
3000                                         if (direction == 1)
3001                                         {
3002                                                 log(DEBUG,"umode %c being added",parameters[1][i]);
3003                                                 if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],user->modes,true)))
3004                                                 {
3005                                                         char umode = parameters[1][i];
3006                                                         log(DEBUG,"umode %c is an allowed umode",umode);
3007                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
3008                                                         {
3009                                                                 dmodes[strlen(dmodes)+1]='\0';
3010                                                                 dmodes[strlen(dmodes)] = parameters[1][i];
3011                                                                 outpars[strlen(outpars)+1]='\0';
3012                                                                 outpars[strlen(outpars)] = parameters[1][i];
3013                                                         }
3014                                                 }
3015                                         }
3016                                         else
3017                                         {
3018                                                 // can only remove a mode they already have
3019                                                 log(DEBUG,"umode %c being removed",parameters[1][i]);
3020                                                 if ((allowed_umode(parameters[1][i],user->modes,false)) && (strchr(dmodes,parameters[1][i])))
3021                                                 {
3022                                                         char umode = parameters[1][i];
3023                                                         log(DEBUG,"umode %c is an allowed umode",umode);
3024                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
3025                                                         {
3026                                                                 int q = 0;
3027                                                                 char temp[MAXBUF];
3028                                                                 char moo[MAXBUF];
3029
3030                                                                 outpars[strlen(outpars)+1]='\0';
3031                                                                 outpars[strlen(outpars)] = parameters[1][i];
3032
3033                                                                 strcpy(temp,"");
3034                                                                 for (q = 0; q < strlen(dmodes); q++)
3035                                                                 {
3036                                                                         if (dmodes[q] != parameters[1][i])
3037                                                                         {
3038                                                                                 moo[0] = dmodes[q];
3039                                                                                 moo[1] = '\0';
3040                                                                                 strcat(temp,moo);
3041                                                                         }
3042                                                                 }
3043                                                                 strcpy(dmodes,temp);
3044                                                         }
3045                                                 }
3046                                         }
3047                                 }
3048                         }
3049                 }
3050                 if (strlen(outpars))
3051                 {
3052                         char b[MAXBUF];
3053                         strcpy(b,"");
3054                         int z = 0;
3055                         int i = 0;
3056                         while (i < strlen (outpars))
3057                         {
3058                                 b[z++] = outpars[i++];
3059                                 b[z] = '\0';
3060                                 if (i<strlen(outpars)-1)
3061                                 {
3062                                         if (((outpars[i] == '-') || (outpars[i] == '+')) && ((outpars[i+1] == '-') || (outpars[i+1] == '+')))
3063                                         {
3064                                                 // someones playing silly buggers and trying
3065                                                 // to put a +- or -+ into the line...
3066                                                 i++;
3067                                         }
3068                                 }
3069                                 if (i == strlen(outpars)-1)
3070                                 {
3071                                         if ((outpars[i] == '-') || (outpars[i] == '+'))
3072                                         {
3073                                                 i++;
3074                                         }
3075                                 }
3076                         }
3077
3078                         z = strlen(b)-1;
3079                         if ((b[z] == '-') || (b[z] == '+'))
3080                                 b[z] == '\0';
3081
3082                         if ((!strcmp(b,"+")) || (!strcmp(b,"-")))
3083                                 return;
3084
3085                         WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
3086
3087                         if (strlen(dmodes)>MAXMODES)
3088                         {
3089                                 dmodes[MAXMODES-1] = '\0';
3090                         }
3091                         log(DEBUG,"Stripped mode line");
3092                         log(DEBUG,"Line dest is now %s",dmodes);
3093                         strncpy(dest->modes,dmodes,MAXMODES);
3094
3095                 }
3096
3097                 return;
3098         }
3099
3100         Ptr = FindChan(parameters[0]);
3101         if (Ptr)
3102         {
3103                 process_modes(parameters,user,Ptr,STATUS_OP,pcnt,true,false);
3104         }
3105         else
3106         {
3107                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3108         }
3109 }
3110
3111
3112
3113 void merge_mode(char **parameters, int pcnt)
3114 {
3115         chanrec* Ptr;
3116         userrec* dest;
3117         int can_change,i;
3118         int direction = 1;
3119         char outpars[MAXBUF];
3120
3121         dest = Find(parameters[0]);
3122
3123         // fix: ChroNiCk found this - we cant use this as debug if its null!
3124         if (dest)
3125         {
3126                 log(DEBUG,"merge_mode on %s",dest->nick);
3127         }
3128
3129         if ((dest) && (pcnt > 1))
3130         {
3131                 log(DEBUG,"params > 1");
3132
3133                 char dmodes[MAXBUF];
3134                 strncpy(dmodes,dest->modes,MAXBUF);
3135
3136                 strcpy(outpars,"+");
3137                 direction = 1;
3138
3139                 if ((parameters[1][0] != '+') && (parameters[1][0] != '-'))
3140                         return;
3141
3142                 for (int i = 0; i < strlen(parameters[1]); i++)
3143                 {
3144                         if (parameters[1][i] == '+')
3145                         {
3146                                 if (direction != 1)
3147                                 {
3148                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
3149                                         {
3150                                                 outpars[strlen(outpars)-1] = '+';
3151                                         }
3152                                         else
3153                                         {
3154                                                 strcat(outpars,"+");
3155                                         }
3156                                 }
3157                                 direction = 1;
3158                         }
3159                         else
3160                         if (parameters[1][i] == '-')
3161                         {
3162                                 if (direction != 0)
3163                                 {
3164                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
3165                                         {
3166                                                 outpars[strlen(outpars)-1] = '-';
3167                                         }
3168                                         else
3169                                         {
3170                                                 strcat(outpars,"-");
3171                                         }
3172                                 }
3173                                 direction = 0;
3174                         }
3175                         else
3176                         {
3177                                 log(DEBUG,"begin mode processing entry");
3178                                 can_change = 1;
3179                                 if (can_change)
3180                                 {
3181                                         if (direction == 1)
3182                                         {
3183                                                 log(DEBUG,"umode %c being added",parameters[1][i]);
3184                                                 if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],"o",true)))
3185                                                 {
3186                                                         char umode = parameters[1][i];
3187                                                         log(DEBUG,"umode %c is an allowed umode",umode);
3188                                                         if ((process_module_umode(umode, NULL, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
3189                                                         {
3190                                                                 dmodes[strlen(dmodes)+1]='\0';
3191                                                                 dmodes[strlen(dmodes)] = parameters[1][i];
3192                                                                 outpars[strlen(outpars)+1]='\0';
3193                                                                 outpars[strlen(outpars)] = parameters[1][i];
3194                                                         }
3195                                                 }
3196                                         }
3197                                         else
3198                                         {
3199                                                 // can only remove a mode they already have
3200                                                 log(DEBUG,"umode %c being removed",parameters[1][i]);
3201                                                 if ((allowed_umode(parameters[1][i],"o",false)) && (strchr(dmodes,parameters[1][i])))
3202                                                 {
3203                                                         char umode = parameters[1][i];
3204                                                         log(DEBUG,"umode %c is an allowed umode",umode);
3205                                                         if ((process_module_umode(umode, NULL, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
3206                                                         {
3207                                                                 int q = 0;
3208                                                                 char temp[MAXBUF];
3209                                                                 char moo[MAXBUF];
3210
3211                                                                 outpars[strlen(outpars)+1]='\0';
3212                                                                 outpars[strlen(outpars)] = parameters[1][i];
3213
3214                                                                 strcpy(temp,"");
3215                                                                 for (q = 0; q < strlen(dmodes); q++)
3216                                                                 {
3217                                                                         if (dmodes[q] != parameters[1][i])
3218                                                                         {
3219                                                                                 moo[0] = dmodes[q];
3220                                                                                 moo[1] = '\0';
3221                                                                                 strcat(temp,moo);
3222                                                                         }
3223                                                                 }
3224                                                                 strcpy(dmodes,temp);
3225                                                         }
3226                                                 }
3227                                         }
3228                                 }
3229                         }
3230                 }
3231                 if (strlen(outpars))
3232                 {
3233                         char b[MAXBUF];
3234                         strcpy(b,"");
3235                         int z = 0;
3236                         int i = 0;
3237                         while (i < strlen (outpars))
3238                         {
3239                                 b[z++] = outpars[i++];
3240                                 b[z] = '\0';
3241                                 if (i<strlen(outpars)-1)
3242                                 {
3243                                         if (((outpars[i] == '-') || (outpars[i] == '+')) && ((outpars[i+1] == '-') || (outpars[i+1] == '+')))
3244                                         {
3245                                                 // someones playing silly buggers and trying
3246                                                 // to put a +- or -+ into the line...
3247                                                 i++;
3248                                         }
3249                                 }
3250                                 if (i == strlen(outpars)-1)
3251                                 {
3252                                         if ((outpars[i] == '-') || (outpars[i] == '+'))
3253                                         {
3254                                                 i++;
3255                                         }
3256                                 }
3257                         }
3258
3259                         z = strlen(b)-1;
3260                         if ((b[z] == '-') || (b[z] == '+'))
3261                                 b[z] == '\0';
3262
3263                         if ((!strcmp(b,"+")) || (!strcmp(b,"-")))
3264                                 return;
3265
3266                         if (strlen(dmodes)>MAXMODES)
3267                         {
3268                                 dmodes[MAXMODES-1] = '\0';
3269                         }
3270                         log(DEBUG,"Stripped mode line");
3271                         log(DEBUG,"Line dest is now %s",dmodes);
3272                         strncpy(dest->modes,dmodes,MAXMODES);
3273
3274                 }
3275
3276                 return;
3277         }
3278
3279         Ptr = FindChan(parameters[0]);
3280         if (Ptr)
3281         {
3282                 userrec s2;
3283                 strncpy(s2.nick,ServerName,NICKMAX);
3284                 strcpy(s2.modes,"o");
3285                 s2.fd = -1;
3286                 process_modes(parameters,&s2,Ptr,STATUS_OP,pcnt,true,true);
3287         }
3288 }
3289
3290
3291 /* This function pokes and hacks at a parameter list like the following:
3292  *
3293  * PART #winbot, #darkgalaxy :m00!
3294  *
3295  * to turn it into a series of individual calls like this:
3296  *
3297  * PART #winbot :m00!
3298  * PART #darkgalaxy :m00!
3299  *
3300  * The seperate calls are sent to a callback function provided by the caller
3301  * (the caller will usually call itself recursively). The callback function
3302  * must be a command handler. Calling this function on a line with no list causes
3303  * no action to be taken. You must provide a starting and ending parameter number
3304  * where the range of the list can be found, useful if you have a terminating
3305  * parameter as above which is actually not part of the list, or parameters
3306  * before the actual list as well. This code is used by many functions which
3307  * can function as "one to list" (see the RFC) */
3308
3309 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
3310 {
3311         char plist[MAXBUF];
3312         char *param;
3313         char *pars[32];
3314         char blog[32][MAXBUF];
3315         char blog2[32][MAXBUF];
3316         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
3317         char keystr[MAXBUF];
3318         char moo[MAXBUF];
3319
3320         for (int i = 0; i <32; i++)
3321                 strcpy(blog[i],"");
3322
3323         for (int i = 0; i <32; i++)
3324                 strcpy(blog2[i],"");
3325
3326         strcpy(moo,"");
3327         for (int i = 0; i <10; i++)
3328         {
3329                 if (!parameters[i])
3330                 {
3331                         parameters[i] = moo;
3332                 }
3333         }
3334         if (joins)
3335         {
3336                 if (pcnt > 1) /* we have a key to copy */
3337                 {
3338                         strcpy(keystr,parameters[1]);
3339                 }
3340         }
3341
3342         if (!parameters[start])
3343         {
3344                 return 0;
3345         }
3346         if (!strchr(parameters[start],','))
3347         {
3348                 return 0;
3349         }
3350         strcpy(plist,"");
3351         for (int i = start; i <= end; i++)
3352         {
3353                 if (parameters[i])
3354                 {
3355                         strcat(plist,parameters[i]);
3356                 }
3357         }
3358
3359         j = 0;
3360         param = plist;
3361
3362         t = strlen(plist);
3363         for (int i = 0; i < t; i++)
3364         {
3365                 if (plist[i] == ',')
3366                 {
3367                         plist[i] = '\0';
3368                         strcpy(blog[j++],param);
3369                         param = plist+i+1;
3370                         if (j>20)
3371                         {
3372                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
3373                                 return 1;
3374                         }
3375                 }
3376         }
3377         strcpy(blog[j++],param);
3378         total = j;
3379
3380         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
3381         {
3382                 strcat(keystr,",");
3383         }
3384
3385         if ((joins) && (keystr))
3386         {
3387                 if (strchr(keystr,','))
3388                 {
3389                         j = 0;
3390                         param = keystr;
3391                         t2 = strlen(keystr);
3392                         for (int i = 0; i < t2; i++)
3393                         {
3394                                 if (keystr[i] == ',')
3395                                 {
3396                                         keystr[i] = '\0';
3397                                         strcpy(blog2[j++],param);
3398                                         param = keystr+i+1;
3399                                 }
3400                         }
3401                         strcpy(blog2[j++],param);
3402                         total2 = j;
3403                 }
3404         }
3405
3406         for (j = 0; j < total; j++)
3407         {
3408                 if (blog[j])
3409                 {
3410                         pars[0] = blog[j];
3411                 }
3412                 for (q = end; q < pcnt-1; q++)
3413                 {
3414                         if (parameters[q+1])
3415                         {
3416                                 pars[q-end+1] = parameters[q+1];
3417                         }
3418                 }
3419                 if ((joins) && (parameters[1]))
3420                 {
3421                         if (pcnt > 1)
3422                         {
3423                                 pars[1] = blog2[j];
3424                         }
3425                         else
3426                         {
3427                                 pars[1] = NULL;
3428                         }
3429                 }
3430                 /* repeatedly call the function with the hacked parameter list */
3431                 if ((joins) && (pcnt > 1))
3432                 {
3433                         if (pars[1])
3434                         {
3435                                 // pars[1] already set up and containing key from blog2[j]
3436                                 fn(pars,2,u);
3437                         }
3438                         else
3439                         {
3440                                 pars[1] = parameters[1];
3441                                 fn(pars,2,u);
3442                         }
3443                 }
3444                 else
3445                 {
3446                         fn(pars,pcnt-(end-start),u);
3447                 }
3448         }
3449
3450         return 1;
3451 }
3452
3453
3454 void handle_join(char **parameters, int pcnt, userrec *user)
3455 {
3456         chanrec* Ptr;
3457         int i = 0;
3458
3459         if (loop_call(handle_join,parameters,pcnt,user,0,0,1))
3460                 return;
3461         if (parameters[0][0] == '#')
3462         {
3463                 Ptr = add_channel(user,parameters[0],parameters[1],false);
3464         }
3465 }
3466
3467
3468 void handle_part(char **parameters, int pcnt, userrec *user)
3469 {
3470         chanrec* Ptr;
3471
3472         if (pcnt > 1)
3473         {
3474                 if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-2,0))
3475                         return;
3476                 del_channel(user,parameters[0],parameters[1],false);
3477         }
3478         else
3479         {
3480                 if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-1,0))
3481                         return;
3482                 del_channel(user,parameters[0],NULL,false);
3483         }
3484 }
3485
3486 void handle_kick(char **parameters, int pcnt, userrec *user)
3487 {
3488         chanrec* Ptr = FindChan(parameters[0]);
3489         userrec* u   = Find(parameters[1]);
3490
3491         if ((!u) || (!Ptr))
3492         {
3493                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3494                 return;
3495         }
3496
3497         if (!has_channel(u,Ptr))
3498         {
3499                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, parameters[0]);
3500                 return;
3501         }
3502
3503         if (pcnt > 2)
3504         {
3505                 char reason[MAXBUF];
3506                 strncpy(reason,parameters[2],MAXBUF);
3507                 if (strlen(reason)>MAXKICK)
3508                 {
3509                         reason[MAXKICK-1] = '\0';
3510                 }
3511
3512                 kick_channel(user,u,Ptr,reason);
3513         }
3514         else
3515         {
3516                 kick_channel(user,u,Ptr,user->nick);
3517         }
3518 }
3519
3520
3521 void handle_die(char **parameters, int pcnt, userrec *user)
3522 {
3523         log(DEBUG,"die: %s",user->nick);
3524         if (!strcmp(parameters[0],diepass))
3525         {
3526                 WriteOpers("*** DIE command from %s!%s@%s, terminating...",user->nick,user->ident,user->host);
3527                 sleep(DieDelay);
3528                 Exit(ERROR);
3529         }
3530         else
3531         {
3532                 WriteOpers("*** Failed DIE Command from %s!%s@%s.",user->nick,user->ident,user->host);
3533         }
3534 }
3535
3536 void handle_restart(char **parameters, int pcnt, userrec *user)
3537 {
3538         log(DEBUG,"restart: %s",user->nick);
3539         if (!strcmp(parameters[0],restartpass))
3540         {
3541                 WriteOpers("*** RESTART command from %s!%s@%s, Pretending to restart till this is finished :D",user->nick,user->ident,user->host);
3542                 sleep(DieDelay);
3543                 Exit(ERROR);
3544                 /* Will finish this later when i can be arsed :) */
3545         }
3546         else
3547         {
3548                 WriteOpers("*** Failed RESTART Command from %s!%s@%s.",user->nick,user->ident,user->host);
3549         }
3550 }
3551
3552
3553 void kill_link(userrec *user,const char* r)
3554 {
3555         user_hash::iterator iter = clientlist.find(user->nick);
3556
3557         char reason[MAXBUF];
3558
3559         strncpy(reason,r,MAXBUF);
3560
3561         if (strlen(reason)>MAXQUIT)
3562         {
3563                 reason[MAXQUIT-1] = '\0';
3564         }
3565
3566         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
3567         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
3568         log(DEBUG,"closing fd %d",user->fd);
3569
3570         /* bugfix, cant close() a nonblocking socket (sux!) */
3571         if (user->registered == 7) {
3572                 FOREACH_MOD OnUserQuit(user);
3573                 WriteCommonExcept(user,"QUIT :%s",reason);
3574
3575                 // Q token must go to ALL servers!!!
3576                 char buffer[MAXBUF];
3577                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
3578                 for (int j = 0; j < 255; j++)
3579                 {
3580                         if (servers[j] != NULL)
3581                         {
3582                                 if (strcmp(servers[j]->name,ServerName))
3583                                 {
3584                                         me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
3585                                         log(DEBUG,"Sent Q token");
3586                                 }
3587                         }
3588                 }
3589         }
3590
3591         /* push the socket on a stack of sockets due to be closed at the next opportunity
3592          * 'Client exited' is an exception to this as it means the client side has already
3593          * closed the socket, we don't need to do it.
3594          */
3595         fd_reap.push_back(user->fd);
3596
3597         bool do_purge = false;
3598
3599         if (user->registered == 7) {
3600                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
3601                 AddWhoWas(user);
3602         }
3603
3604         if (iter != clientlist.end())
3605         {
3606                 log(DEBUG,"deleting user hash value %d",iter->second);
3607                 if ((iter->second) && (user->registered == 7)) {
3608                         delete iter->second;
3609                 }
3610                 clientlist.erase(iter);
3611         }
3612
3613         if (user->registered == 7) {
3614                 purge_empty_chans();
3615         }
3616 }
3617
3618
3619 void handle_kill(char **parameters, int pcnt, userrec *user)
3620 {
3621         userrec *u = Find(parameters[0]);
3622         char killreason[MAXBUF];
3623
3624         log(DEBUG,"kill: %s %s",parameters[0],parameters[1]);
3625         if (u)
3626         {
3627                 WriteTo(user, u, "KILL %s :%s!%s!%s (%s)", u->nick, ServerName,user->dhost,user->nick,parameters[1]);
3628                 // :Brain!brain@NetAdmin.chatspike.net KILL [Brain] :homer!NetAdmin.chatspike.net!Brain (test kill)
3629                 WriteOpers("*** Local Kill by %s: %s!%s@%s (%s)",user->nick,u->nick,u->ident,u->host,parameters[1]);
3630                 sprintf(killreason,"Killed (%s (%s))",user->nick,parameters[1]);
3631                 kill_link(u,killreason);
3632         }
3633         else
3634         {
3635                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3636         }
3637 }
3638
3639 void handle_summon(char **parameters, int pcnt, userrec *user)
3640 {
3641         WriteServ(user->fd,"445 %s :SUMMON has been disabled (depreciated command)",user->nick);
3642 }
3643
3644 void handle_users(char **parameters, int pcnt, userrec *user)
3645 {
3646         WriteServ(user->fd,"445 %s :USERS has been disabled (depreciated command)",user->nick);
3647 }
3648
3649
3650 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
3651
3652 char* Passwd(userrec *user)
3653 {
3654         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3655         {
3656                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
3657                 {
3658                         return i->pass;
3659                 }
3660         }
3661         return "";
3662 }
3663
3664 bool IsDenied(userrec *user)
3665 {
3666         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3667         {
3668                 if (match(user->host,i->host) && (i->type == CC_DENY))
3669                 {
3670                         return true;
3671                 }
3672         }
3673         return false;
3674 }
3675
3676
3677
3678 void handle_pass(char **parameters, int pcnt, userrec *user)
3679 {
3680         // Check to make sure they havnt registered -- Fix by FCS
3681         if (user->registered == 7)
3682         {
3683                 WriteServ(user->fd,"462 %s :You may not reregister",user->nick);
3684                 return;
3685         }
3686         if (!strcasecmp(parameters[0],Passwd(user)))
3687         {
3688                 user->haspassed = true;
3689         }
3690 }
3691
3692 void handle_invite(char **parameters, int pcnt, userrec *user)
3693 {
3694         userrec* u = Find(parameters[0]);
3695         chanrec* c = FindChan(parameters[1]);
3696
3697         if ((!c) || (!u))
3698         {
3699                 if (!c)
3700                 {
3701                         WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]);
3702                 }
3703                 else
3704                 {
3705                         if (c->inviteonly)
3706                         {
3707                                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
3708                         }
3709                 }
3710
3711                 return;
3712         }
3713
3714         if (c->inviteonly)
3715         {
3716                 if (cstatus(user,c) < STATUS_HOP)
3717                 {
3718                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, c->name);
3719                         return;
3720                 }
3721         }
3722         if (has_channel(u,c))
3723         {
3724                 WriteServ(user->fd,"443 %s %s %s :Is already on channel %s",user->nick,u->nick,c->name,c->name);
3725                 return;
3726         }
3727         if (!has_channel(user,c))
3728         {
3729                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, c->name);
3730                 return;
3731         }
3732         u->InviteTo(c->name);
3733         WriteFrom(u->fd,user,"INVITE %s :%s",u->nick,c->name);
3734         WriteServ(user->fd,"341 %s %s %s",user->nick,u->nick,c->name);
3735 }
3736
3737 void handle_topic(char **parameters, int pcnt, userrec *user)
3738 {
3739         chanrec* Ptr;
3740
3741         if (pcnt == 1)
3742         {
3743                 if (strlen(parameters[0]) <= CHANMAX)
3744                 {
3745                         Ptr = FindChan(parameters[0]);
3746                         if (Ptr)
3747                         {
3748                                 if (Ptr->topicset)
3749                                 {
3750                                         WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
3751                                         WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
3752                                 }
3753                                 else
3754                                 {
3755                                         WriteServ(user->fd,"331 %s %s :No topic is set.", user->nick, Ptr->name);
3756                                 }
3757                         }
3758                         else
3759                         {
3760                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3761                         }
3762                 }
3763                 return;
3764         }
3765         else if (pcnt>1)
3766         {
3767                 if (strlen(parameters[0]) <= CHANMAX)
3768                 {
3769                         Ptr = FindChan(parameters[0]);
3770                         if (Ptr)
3771                         {
3772                                 if ((Ptr->topiclock) && (cstatus(user,Ptr)<STATUS_HOP))
3773                                 {
3774                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel", user->nick, Ptr->name);
3775                                         return;
3776                                 }
3777
3778                                 char topic[MAXBUF];
3779                                 strncpy(topic,parameters[1],MAXBUF);
3780                                 if (strlen(topic)>MAXTOPIC)
3781                                 {
3782                                         topic[MAXTOPIC-1] = '\0';
3783                                 }
3784
3785                                 strcpy(Ptr->topic,topic);
3786                                 strcpy(Ptr->setby,user->nick);
3787                                 Ptr->topicset = time(NULL);
3788                                 WriteChannel(Ptr,user,"TOPIC %s :%s",Ptr->name, Ptr->topic);
3789                         }
3790                         else
3791                         {
3792                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3793                         }
3794                 }
3795         }
3796 }
3797
3798 /* sends out an error notice to all connected clients (not to be used
3799  * lightly!) */
3800
3801 void send_error(char *s)
3802 {
3803         log(DEBUG,"send_error: %s",s);
3804         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3805         {
3806                 if (isnick(i->second->nick))
3807                 {
3808                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
3809                 }
3810                 else
3811                 {
3812                         // fix - unregistered connections receive ERROR, not NOTICE
3813                         Write(i->second->fd,"ERROR :%s",s);
3814                 }
3815         }
3816 }
3817
3818 void Error(int status)
3819 {
3820         signal (SIGALRM, SIG_IGN);
3821         signal (SIGPIPE, SIG_IGN);
3822         signal (SIGTERM, SIG_IGN);
3823         signal (SIGABRT, SIG_IGN);
3824         signal (SIGSEGV, SIG_IGN);
3825         signal (SIGURG, SIG_IGN);
3826         signal (SIGKILL, SIG_IGN);
3827         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
3828         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
3829         exit(status);
3830 }
3831
3832
3833 int main (int argc, char *argv[])
3834 {
3835         Start();
3836         log(DEBUG,"*** InspIRCd starting up!");
3837         if (!FileExists(CONFIG_FILE))
3838         {
3839                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
3840                 log(DEBUG,"main: no config");
3841                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
3842                 Exit(ERROR);
3843         }
3844         if (argc > 1) {
3845                 if (!strcmp(argv[1],"-nofork")) {
3846                         nofork = true;
3847                 }
3848         }
3849         if (InspIRCd() == ERROR)
3850         {
3851                 log(DEBUG,"main: daemon function bailed");
3852                 printf("ERROR: could not initialise. Shutting down.\n");
3853                 Exit(ERROR);
3854         }
3855         Exit(TRUE);
3856         return 0;
3857 }
3858
3859 template<typename T> inline string ConvToStr(const T &in)
3860 {
3861         stringstream tmp;
3862         if (!(tmp << in)) return string();
3863         return tmp.str();
3864 }
3865
3866 /* re-allocates a nick in the user_hash after they change nicknames,
3867  * returns a pointer to the new user as it may have moved */
3868
3869 userrec* ReHashNick(char* Old, char* New)
3870 {
3871         user_hash::iterator newnick;
3872         user_hash::iterator oldnick = clientlist.find(Old);
3873
3874         log(DEBUG,"ReHashNick: %s %s",Old,New);
3875
3876         if (!strcasecmp(Old,New))
3877         {
3878                 log(DEBUG,"old nick is new nick, skipping");
3879                 return oldnick->second;
3880         }
3881
3882         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
3883
3884         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
3885
3886         clientlist[New] = new userrec();
3887         clientlist[New] = oldnick->second;
3888         /*delete oldnick->second; */
3889         clientlist.erase(oldnick);
3890
3891         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
3892
3893         return clientlist[New];
3894 }
3895
3896 /* adds or updates an entry in the whowas list */
3897 void AddWhoWas(userrec* u)
3898 {
3899         user_hash::iterator iter = whowas.find(u->nick);
3900         userrec *a = new userrec();
3901         strcpy(a->nick,u->nick);
3902         strcpy(a->ident,u->ident);
3903         strcpy(a->dhost,u->dhost);
3904         strcpy(a->host,u->host);
3905         strcpy(a->fullname,u->fullname);
3906         strcpy(a->server,u->server);
3907         a->signon = u->signon;
3908
3909         /* MAX_WHOWAS:   max number of /WHOWAS items
3910          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
3911          *               can be replaced by a newer one
3912          */
3913
3914         if (iter == whowas.end())
3915         {
3916                 if (whowas.size() == WHOWAS_MAX)
3917                 {
3918                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
3919                         {
3920                                 // 3600 seconds in an hour ;)
3921                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
3922                                 {
3923                                         delete i->second;
3924                                         i->second = a;
3925                                         log(DEBUG,"added WHOWAS entry, purged an old record");
3926                                         return;
3927                                 }
3928                         }
3929                 }
3930                 else
3931                 {
3932                         log(DEBUG,"added fresh WHOWAS entry");
3933                         whowas[a->nick] = a;
3934                 }
3935         }
3936         else
3937         {
3938                 log(DEBUG,"updated WHOWAS entry");
3939                 delete iter->second;
3940                 iter->second = a;
3941         }
3942 }
3943
3944
3945 /* add a client connection to the sockets list */
3946 void AddClient(int socket, char* host, int port, bool iscached)
3947 {
3948         int i;
3949         int blocking = 1;
3950         char resolved[MAXBUF];
3951         string tempnick;
3952         char tn2[MAXBUF];
3953         user_hash::iterator iter;
3954
3955         tempnick = ConvToStr(socket) + "-unknown";
3956         sprintf(tn2,"%d-unknown",socket);
3957
3958         iter = clientlist.find(tempnick);
3959
3960         if (iter != clientlist.end()) return;
3961
3962         /*
3963          * It is OK to access the value here this way since we know
3964          * it exists, we just created it above.
3965          *
3966          * At NO other time should you access a value in a map or a
3967          * hash_map this way.
3968          */
3969         clientlist[tempnick] = new userrec();
3970
3971         NonBlocking(socket);
3972         log(DEBUG,"AddClient: %d %s %d",socket,host,port);
3973
3974         clientlist[tempnick]->fd = socket;
3975         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
3976         strncpy(clientlist[tempnick]->host, host,160);
3977         strncpy(clientlist[tempnick]->dhost, host,160);
3978         strncpy(clientlist[tempnick]->server, ServerName,256);
3979         strncpy(clientlist[tempnick]->ident, "unknown",9);
3980         clientlist[tempnick]->registered = 0;
3981         clientlist[tempnick]->signon = time(NULL);
3982         clientlist[tempnick]->nping = time(NULL)+240;
3983         clientlist[tempnick]->lastping = 1;
3984         clientlist[tempnick]->port = port;
3985
3986         if (iscached)
3987         {
3988                 WriteServ(socket,"NOTICE Auth :Found your hostname (cached)...");
3989         }
3990         else
3991         {
3992                 WriteServ(socket,"NOTICE Auth :Looking up your hostname...");
3993         }
3994
3995         // set the registration timeout for this user
3996         unsigned long class_regtimeout = 90;
3997         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3998         {
3999                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
4000                 {
4001                         class_regtimeout = (unsigned long)i->registration_timeout;
4002                         break;
4003                 }
4004         }
4005
4006         int class_flood = 0;
4007         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
4008         {
4009                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
4010                 {
4011                         class_flood = i->flood;
4012                         break;
4013                 }
4014         }
4015
4016         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
4017         clientlist[tempnick]->flood = class_flood;
4018
4019         for (int i = 0; i < MAXCHANS; i++)
4020         {
4021                 clientlist[tempnick]->chans[i].channel = NULL;
4022                 clientlist[tempnick]->chans[i].uc_modes = 0;
4023         }
4024
4025         if (clientlist.size() == MAXCLIENTS)
4026                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
4027 }
4028
4029 void handle_names(char **parameters, int pcnt, userrec *user)
4030 {
4031         chanrec* c;
4032
4033         if (loop_call(handle_names,parameters,pcnt,user,0,pcnt-1,0))
4034                 return;
4035         c = FindChan(parameters[0]);
4036         if (c)
4037         {
4038                 /*WriteServ(user->fd,"353 %s = %s :%s", user->nick, c->name,*/
4039                 userlist(user,c);
4040                 WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, c->name);
4041         }
4042         else
4043         {
4044                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4045         }
4046 }
4047
4048 void handle_privmsg(char **parameters, int pcnt, userrec *user)
4049 {
4050         userrec *dest;
4051         chanrec *chan;
4052
4053         user->idle_lastmsg = time(NULL);
4054
4055         if (loop_call(handle_privmsg,parameters,pcnt,user,0,pcnt-2,0))
4056                 return;
4057         if (parameters[0][0] == '#')
4058         {
4059                 chan = FindChan(parameters[0]);
4060                 if (chan)
4061                 {
4062                         if ((chan->noexternal) && (!has_channel(user,chan)))
4063                         {
4064                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
4065                                 return;
4066                         }
4067                         if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
4068                         {
4069                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
4070                                 return;
4071                         }
4072
4073                         int MOD_RESULT = 0;
4074
4075                         FOREACH_RESULT(OnUserPreMessage(user,chan,TYPE_CHANNEL,std::string(parameters[1])));
4076                         if (MOD_RESULT) {
4077                                 return;
4078                         }
4079
4080                         ChanExceptSender(chan, user, "PRIVMSG %s :%s", chan->name, parameters[1]);
4081
4082                         // if any users of this channel are on remote servers, broadcast the packet
4083                         char buffer[MAXBUF];
4084                         snprintf(buffer,MAXBUF,"P %s %s :%s",user->nick,chan->name,parameters[1]);
4085                         for (int j = 0; j < 255; j++)
4086                         {
4087                                 if (servers[j] != NULL)
4088                                 {
4089                                         if (ChanAnyOnThisServer(chan,servers[j]->name))
4090                                         {
4091                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4092                                         }
4093                                 }
4094                         }
4095                 }
4096                 else
4097                 {
4098                         /* no such nick/channel */
4099                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4100                 }
4101                 return;
4102         }
4103
4104         dest = Find(parameters[0]);
4105         if (dest)
4106         {
4107                 if (strcmp(dest->awaymsg,""))
4108                 {
4109                         /* auto respond with aweh msg */
4110                         WriteServ(user->fd,"301 %s %s :%s",user->nick,dest->nick,dest->awaymsg);
4111                 }
4112
4113                 int MOD_RESULT = 0;
4114
4115                 FOREACH_RESULT(OnUserPreMessage(user,dest,TYPE_USER,std::string(parameters[1])));
4116                 if (MOD_RESULT) {
4117                         return;
4118                 }
4119
4120
4121
4122                 if (!strcmp(dest->server,user->server))
4123                 {
4124                         // direct write, same server
4125                         WriteTo(user, dest, "PRIVMSG %s :%s", dest->nick, parameters[1]);
4126                 }
4127                 else
4128                 {
4129                         for (int j = 0; j < 255; j++)
4130                         {
4131                                 if (servers[j] != NULL)
4132                                 {
4133                                         if (!strcasecmp(servers[j]->name,dest->server))
4134                                         {
4135                                                 // direct write, same server
4136                                                 char buffer[MAXBUF];
4137                                                 snprintf(buffer,MAXBUF,"P %s %s :%s",user->nick,dest->nick,parameters[1]);
4138                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4139                                         }
4140                                 }
4141                         }
4142                 }
4143         }
4144         else
4145         {
4146                 /* no such nick/channel */
4147                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4148         }
4149 }
4150
4151 void handle_notice(char **parameters, int pcnt, userrec *user)
4152 {
4153         userrec *dest;
4154         chanrec *chan;
4155
4156         user->idle_lastmsg = time(NULL);
4157
4158         if (loop_call(handle_notice,parameters,pcnt,user,0,pcnt-2,0))
4159                 return;
4160         if (parameters[0][0] == '#')
4161         {
4162                 chan = FindChan(parameters[0]);
4163                 if (chan)
4164                 {
4165                         if ((chan->noexternal) && (!has_channel(user,chan)))
4166                         {
4167                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
4168                                 return;
4169                         }
4170                         if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
4171                         {
4172                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
4173                                 return;
4174                         }
4175
4176                         int MOD_RESULT = 0;
4177
4178                         FOREACH_RESULT(OnUserPreNotice(user,chan,TYPE_CHANNEL,std::string(parameters[1])));
4179                         if (MOD_RESULT) {
4180                                 return;
4181                         }
4182
4183                         ChanExceptSender(chan, user, "NOTICE %s :%s", chan->name, parameters[1]);
4184
4185                         // if any users of this channel are on remote servers, broadcast the packet
4186                         char buffer[MAXBUF];
4187                         snprintf(buffer,MAXBUF,"O %s %s :%s",user->nick,chan->name,parameters[1]);
4188                         for (int j = 0; j < 255; j++)
4189                         {
4190                                 if (servers[j] != NULL)
4191                                 {
4192                                         if (ChanAnyOnThisServer(chan,servers[j]->name))
4193                                         {
4194                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4195                                         }
4196                                 }
4197                         }
4198                 }
4199                 else
4200                 {
4201                         /* no such nick/channel */
4202                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4203                 }
4204                 return;
4205         }
4206
4207         dest = Find(parameters[0]);
4208         if (dest)
4209         {
4210                 int MOD_RESULT = 0;
4211
4212                 FOREACH_RESULT(OnUserPreNotice(user,dest,TYPE_USER,std::string(parameters[1])));
4213                 if (MOD_RESULT) {
4214                         return;
4215                 }
4216
4217                 if (!strcmp(dest->server,user->server))
4218                 {
4219                         // direct write, same server
4220                         WriteTo(user, dest, "NOTICE %s :%s", dest->nick, parameters[1]);
4221                 }
4222                 else
4223                 {
4224                         for (int j = 0; j < 255; j++)
4225                         {
4226                                 if (servers[j] != NULL)
4227                                 {
4228                                         if (!strcasecmp(servers[j]->name,dest->server))
4229                                         {
4230                                                 // direct write, same server
4231                                                 char buffer[MAXBUF];
4232                                                 snprintf(buffer,MAXBUF,"O %s %s :%s",user->nick,dest->nick,parameters[1]);
4233                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4234                                         }
4235                                 }
4236                         }
4237                 }
4238         }
4239         else
4240         {
4241                 /* no such nick/channel */
4242                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4243         }
4244 }
4245
4246 char lst[MAXBUF];
4247
4248 char* chlist(userrec *user)
4249 {
4250         int i = 0;
4251         char cmp[MAXBUF];
4252
4253         log(DEBUG,"chlist: %s",user->nick);
4254         strcpy(lst,"");
4255         if (!user)
4256         {
4257                 return lst;
4258         }
4259         for (int i = 0; i != MAXCHANS; i++)
4260         {
4261                 if (user->chans[i].channel != NULL)
4262                 {
4263                         if (user->chans[i].channel->name)
4264                         {
4265                                 strcpy(cmp,user->chans[i].channel->name);
4266                                 strcat(cmp," ");
4267                                 if (!strstr(lst,cmp))
4268                                 {
4269                                         if ((!user->chans[i].channel->c_private) && (!user->chans[i].channel->secret))
4270                                         {
4271                                                 strcat(lst,cmode(user,user->chans[i].channel));
4272                                                 strcat(lst,user->chans[i].channel->name);
4273                                                 strcat(lst," ");
4274                                         }
4275                                 }
4276                         }
4277                 }
4278         }
4279         if (strlen(lst))
4280         {
4281                 lst[strlen(lst)-1] = '\0'; // chop trailing space
4282         }
4283         return lst;
4284 }
4285
4286 void handle_info(char **parameters, int pcnt, userrec *user)
4287 {
4288         WriteServ(user->fd,"371 %s :The Inspire IRCd Project Has been brought to you by the following people..",user->nick);
4289         WriteServ(user->fd,"371 %s :Craig Edwards, Craig McLure, and Others..",user->nick);
4290         WriteServ(user->fd,"371 %s :Will finish this later when i can be arsed :p",user->nick);
4291         FOREACH_MOD OnInfo(user);
4292         WriteServ(user->fd,"374 %s :End of /INFO list",user->nick);
4293 }
4294
4295 void handle_time(char **parameters, int pcnt, userrec *user)
4296 {
4297         time_t rawtime;
4298         struct tm * timeinfo;
4299
4300         time ( &rawtime );
4301         timeinfo = localtime ( &rawtime );
4302         WriteServ(user->fd,"391 %s %s :%s",user->nick,ServerName, asctime (timeinfo) );
4303
4304 }
4305
4306 void handle_whois(char **parameters, int pcnt, userrec *user)
4307 {
4308         userrec *dest;
4309         char *t;
4310
4311         if (loop_call(handle_whois,parameters,pcnt,user,0,pcnt-1,0))
4312                 return;
4313         dest = Find(parameters[0]);
4314         if (dest)
4315         {
4316                 // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER
4317                 if (dest->registered == 7)
4318                 {
4319                         WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
4320                         if ((user == dest) || (strchr(user->modes,'o')))
4321                         {
4322                                 WriteServ(user->fd,"378 %s %s :is connecting from *@%s",user->nick, dest->nick, dest->host);
4323                         }
4324                         if (strcmp(chlist(dest),""))
4325                         {
4326                                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, chlist(dest));
4327                         }
4328                         WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, ServerDesc);
4329                         if (strcmp(dest->awaymsg,""))
4330                         {
4331                                 WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
4332                         }
4333                         if (strchr(dest->modes,'o'))
4334                         {
4335                                 WriteServ(user->fd,"313 %s %s :is an IRC operator",user->nick, dest->nick);
4336                         }
4337                         FOREACH_MOD OnWhois(user,dest);
4338                         //WriteServ(user->fd,"310 %s %s :is available for help.",user->nick, dest->nick);
4339                         WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-time(NULL)), dest->signon);
4340
4341                         WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
4342                 }
4343                 else
4344                 {
4345                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4346                 }
4347         }
4348         else
4349         {
4350                 /* no such nick/channel */
4351                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4352         }
4353 }
4354
4355 void handle_quit(char **parameters, int pcnt, userrec *user)
4356 {
4357         user_hash::iterator iter = clientlist.find(user->nick);
4358         char* reason;
4359
4360         if (user->registered == 7)
4361         {
4362                 /* theres more to do here, but for now just close the socket */
4363                 if (pcnt == 1)
4364                 {
4365                         if (parameters[0][0] == ':')
4366                         {
4367                                 *parameters[0]++;
4368                         }
4369                         reason = parameters[0];
4370
4371                         if (strlen(reason)>MAXQUIT)
4372                         {
4373                                 reason[MAXQUIT-1] = '\0';
4374                         }
4375
4376                         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,parameters[0]);
4377                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,parameters[0]);
4378                         WriteCommonExcept(user,"QUIT :%s%s",PrefixQuit,parameters[0]);
4379
4380                         char buffer[MAXBUF];
4381                         snprintf(buffer,MAXBUF,"Q %s :%s%s",user->nick,PrefixQuit,parameters[0]);
4382                         for (int j = 0; j < 255; j++)
4383                         {
4384                                 if (servers[j] != NULL)
4385                                 {
4386                                         if (CommonOnThisServer(user,servers[j]->name))
4387                                         {
4388                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4389                                                 log(DEBUG,"Sent Q token");
4390                                         }
4391                                         }
4392                         }
4393                 }
4394                 else
4395                 {
4396                         Write(user->fd,"ERROR :Closing link (%s@%s) [QUIT]",user->ident,user->host);
4397                         WriteOpers("*** Client exiting: %s!%s@%s [Client exited]",user->nick,user->ident,user->host);
4398                         WriteCommonExcept(user,"QUIT :Client exited");
4399
4400                         char buffer[MAXBUF];
4401                         snprintf(buffer,MAXBUF,"Q %s :Client exited",user->nick);
4402                         for (int j = 0; j < 255; j++)
4403                         {
4404                                 if (servers[j] != NULL)
4405                                 {
4406                                         if (CommonOnThisServer(user,servers[j]->name))
4407                                         {
4408                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4409                                                 log(DEBUG,"Sent Q token");
4410                                         }
4411                                         }
4412                         }
4413                 }
4414                 FOREACH_MOD OnUserQuit(user);
4415                 AddWhoWas(user);
4416         }
4417
4418         /* push the socket on a stack of sockets due to be closed at the next opportunity */
4419         fd_reap.push_back(user->fd);
4420
4421         if (iter != clientlist.end())
4422         {
4423                 clientlist.erase(iter);
4424                 log(DEBUG,"deleting user hash value %d",iter->second);
4425                 //if ((user) && (user->registered == 7)) {
4426                         //delete user;
4427                 //}
4428         }
4429
4430         if (user->registered == 7) {
4431                 purge_empty_chans();
4432         }
4433 }
4434
4435 void handle_who(char **parameters, int pcnt, userrec *user)
4436 {
4437         chanrec* Ptr = NULL;
4438
4439         /* theres more to do here, but for now just close the socket */
4440         if (pcnt == 1)
4441         {
4442                 if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")))
4443                 {
4444                         if (user->chans[0].channel)
4445                         {
4446                                 Ptr = user->chans[0].channel;
4447                                 for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4448                                 {
4449                                         if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
4450                                         {
4451                                                 WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, i->second->server, i->second->nick, i->second->fullname);
4452                                         }
4453                                 }
4454                         }
4455                         if (Ptr)
4456                         {
4457                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
4458                         }
4459                         else
4460                         {
4461                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, user->nick);
4462                         }
4463                         return;
4464                 }
4465                 if (parameters[0][0] == '#')
4466                 {
4467                         Ptr = FindChan(parameters[0]);
4468                         if (Ptr)
4469                         {
4470                                 for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4471                                 {
4472                                         if ((has_channel(i->second,Ptr)) && (isnick(i->second->nick)))
4473                                         {
4474                                                 WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, i->second->server, i->second->nick, i->second->fullname);
4475                                         }
4476                                 }
4477                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
4478                         }
4479                         else
4480                         {
4481                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4482                         }
4483                 }
4484                 else
4485                 {
4486                         userrec* u = Find(parameters[0]);
4487                         WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, u->nick, u->ident, u->dhost, u->server, u->nick, u->fullname);
4488                 }
4489         }
4490         if (pcnt == 2)
4491         {
4492                 if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")) && (!strcmp(parameters[1],"o")))
4493                 {
4494                         Ptr = user->chans[0].channel;
4495                         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4496                         {
4497                                 if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
4498                                 {
4499                                         if (strchr(i->second->modes,'o'))
4500                                         {
4501                                                 WriteServ(user->fd,"352 %s %s %s %s %s %s Hr@ :0 %s",user->nick, Ptr->name, i->second->ident, i->second->dhost, i->second->server, i->second->nick, i->second->fullname);
4502                                         }
4503                                 }
4504                         }
4505                         WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
4506                         return;
4507                 }
4508         }
4509 }
4510
4511 void handle_wallops(char **parameters, int pcnt, userrec *user)
4512 {
4513         WriteWallOps(user,"%s",parameters[0]);
4514 }
4515
4516 void handle_list(char **parameters, int pcnt, userrec *user)
4517 {
4518         chanrec* Ptr;
4519
4520         WriteServ(user->fd,"321 %s Channel :Users Name",user->nick);
4521         for (chan_hash::const_iterator i = chanlist.begin(); i != chanlist.end(); i++)
4522         {
4523                 if ((!i->second->c_private) && (!i->second->secret))
4524                 {
4525                         WriteServ(user->fd,"322 %s %s %d :[+%s] %s",user->nick,i->second->name,usercount_i(i->second),chanmodes(i->second),i->second->topic);
4526                 }
4527         }
4528         WriteServ(user->fd,"323 %s :End of channel list.",user->nick);
4529 }
4530
4531
4532 void handle_rehash(char **parameters, int pcnt, userrec *user)
4533 {
4534         WriteServ(user->fd,"382 %s %s :Rehashing",user->nick,CleanFilename(CONFIG_FILE));
4535         ReadConfig();
4536         FOREACH_MOD OnRehash();
4537         WriteOpers("%s is rehashing config file %s",user->nick,CleanFilename(CONFIG_FILE));
4538 }
4539
4540
4541 int usercnt(void)
4542 {
4543         return clientlist.size();
4544 }
4545
4546
4547 int usercount_invisible(void)
4548 {
4549         int c = 0;
4550
4551         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4552         {
4553                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
4554         }
4555         return c;
4556 }
4557
4558 int usercount_opers(void)
4559 {
4560         int c = 0;
4561
4562         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4563         {
4564                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
4565         }
4566         return c;
4567 }
4568
4569 int usercount_unknown(void)
4570 {
4571         int c = 0;
4572
4573         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4574         {
4575                 if ((i->second->fd) && (i->second->registered != 7))
4576                         c++;
4577         }
4578         return c;
4579 }
4580
4581 int chancount(void)
4582 {
4583         return chanlist.size();
4584 }
4585
4586 int servercount(void)
4587 {
4588         return 1;
4589 }
4590
4591 void handle_lusers(char **parameters, int pcnt, userrec *user)
4592 {
4593         WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),servercount());
4594         WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
4595         WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
4596         WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
4597         WriteServ(user->fd,"254 %s :I have %d clients and 0 servers",user->nick,usercnt());
4598 }
4599
4600 void handle_admin(char **parameters, int pcnt, userrec *user)
4601 {
4602         WriteServ(user->fd,"256 %s :Administrative info for %s",user->nick,ServerName);
4603         WriteServ(user->fd,"257 %s :Name     - %s",user->nick,AdminName);
4604         WriteServ(user->fd,"258 %s :Nickname - %s",user->nick,AdminNick);
4605         WriteServ(user->fd,"258 %s :E-Mail   - %s",user->nick,AdminEmail);
4606 }
4607
4608 void ShowMOTD(userrec *user)
4609 {
4610         if (!MOTD.size())
4611         {
4612                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
4613                 return;
4614         }
4615         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
4616         for (int i = 0; i != MOTD.size(); i++)
4617         {
4618                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
4619         }
4620         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
4621 }
4622
4623 void ShowRULES(userrec *user)
4624 {
4625         if (!RULES.size())
4626         {
4627                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
4628                 return;
4629         }
4630         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
4631         for (int i = 0; i != RULES.size(); i++)
4632         {
4633                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
4634         }
4635         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
4636 }
4637
4638 /* shows the message of the day, and any other on-logon stuff */
4639 void ConnectUser(userrec *user)
4640 {
4641         user->registered = 7;
4642         user->idle_lastmsg = time(NULL);
4643         log(DEBUG,"ConnectUser: %s",user->nick);
4644
4645         if (strcmp(Passwd(user),"") && (!user->haspassed))
4646         {
4647                 kill_link(user,"Invalid password");
4648                 return;
4649         }
4650         if (IsDenied(user))
4651         {
4652                 kill_link(user,"Unauthorised connection");
4653                 return;
4654         }
4655
4656         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
4657         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
4658         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
4659         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
4660         WriteServ(user->fd,"004 %s :%s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
4661         WriteServ(user->fd,"005 %s :MAP KNOCK SAFELIST HCN MAXCHANNELS=20 MAXBANS=60 NICKLEN=30 TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 :are supported by this server",user->nick);
4662         WriteServ(user->fd,"005 %s :WALLCHOPS WATCH=128 SILENCE=5 MODES=13 CHANTYPES=# PREFIX=(ohv)@%c+ CHANMODES=ohvbeqa,kfL,l,psmntirRcOAQKVHGCuzN NETWORK=%s :are supported by this server",user->nick,'%',Network);
4663         ShowMOTD(user);
4664         FOREACH_MOD OnUserConnect(user);
4665         WriteOpers("*** Client connecting on port %d: %s!%s@%s",user->port,user->nick,user->ident,user->host);
4666
4667         char buffer[MAXBUF];
4668         snprintf(buffer,MAXBUF,"N %d %s %s %s %s +%s %s :%s",user->age,user->nick,user->host,user->dhost,user->ident,user->modes,ServerName,user->fullname);
4669         for (int j = 0; j < 255; j++)
4670         {
4671                 if (servers[j] != NULL)
4672                 {
4673                         if (strcmp(servers[j]->name,ServerName))
4674                         {
4675                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4676                                 log(DEBUG,"Sent N token");
4677                         }
4678                 }
4679         }
4680
4681 }
4682
4683 void handle_version(char **parameters, int pcnt, userrec *user)
4684 {
4685         WriteServ(user->fd,"351 %s :%s %s %s :%s",user->nick,VERSION,"$Revision$ $Date$",ServerName,SYSTEM);
4686 }
4687
4688 void handle_ping(char **parameters, int pcnt, userrec *user)
4689 {
4690         WriteServ(user->fd,"PONG %s :%s",ServerName,parameters[0]);
4691 }
4692
4693 void handle_pong(char **parameters, int pcnt, userrec *user)
4694 {
4695         // set the user as alive so they survive to next ping
4696         user->lastping = 1;
4697 }
4698
4699 void handle_motd(char **parameters, int pcnt, userrec *user)
4700 {
4701         ShowMOTD(user);
4702 }
4703
4704 void handle_rules(char **parameters, int pcnt, userrec *user)
4705 {
4706         ShowRULES(user);
4707 }
4708
4709 void handle_user(char **parameters, int pcnt, userrec *user)
4710 {
4711         if (user->registered < 3)
4712         {
4713                 if (isident(parameters[0]) == 0) {
4714                         // This kinda Sucks, According to the RFC thou, its either this,
4715                         // or "You have already registered" :p -- Craig
4716                         WriteServ(user->fd,"461 %s USER :Not enough parameters",user->nick);
4717                 }
4718                 else {
4719                         WriteServ(user->fd,"NOTICE Auth :No ident response, ident prefixed with ~");
4720                         strcpy(user->ident,"~"); /* we arent checking ident... but these days why bother anyway? */
4721                         strncat(user->ident,parameters[0],IDENTMAX);
4722                         strncpy(user->fullname,parameters[3],128);
4723                         user->registered = (user->registered | 1);
4724                 }
4725         }
4726         else
4727         {
4728                 WriteServ(user->fd,"462 %s :You may not reregister",user->nick);
4729                 return;
4730         }
4731         /* parameters 2 and 3 are local and remote hosts, ignored when sent by client connection */
4732         if (user->registered == 3)
4733         {
4734                 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
4735                 ConnectUser(user);
4736         }
4737 }
4738
4739 void handle_userhost(char **parameters, int pcnt, userrec *user)
4740 {
4741         char Return[MAXBUF],junk[MAXBUF];
4742         sprintf(Return,"302 %s :",user->nick);
4743         for (int i = 0; i < pcnt; i++)
4744         {
4745                 userrec *u = Find(parameters[i]);
4746                 if (u)
4747                 {
4748                         if (strchr(u->modes,'o'))
4749                         {
4750                                 sprintf(junk,"%s*=+%s@%s ",u->nick,u->ident,u->host);
4751                                 strcat(Return,junk);
4752                         }
4753                         else
4754                         {
4755                                 sprintf(junk,"%s=+%s@%s ",u->nick,u->ident,u->host);
4756                                 strcat(Return,junk);
4757                         }
4758                 }
4759         }
4760         WriteServ(user->fd,Return);
4761 }
4762
4763
4764 void handle_ison(char **parameters, int pcnt, userrec *user)
4765 {
4766         char Return[MAXBUF];
4767         sprintf(Return,"303 %s :",user->nick);
4768         for (int i = 0; i < pcnt; i++)
4769         {
4770                 userrec *u = Find(parameters[i]);
4771                 if (u)
4772                 {
4773                         strcat(Return,u->nick);
4774                         strcat(Return," ");
4775                 }
4776         }
4777         WriteServ(user->fd,Return);
4778 }
4779
4780
4781 void handle_away(char **parameters, int pcnt, userrec *user)
4782 {
4783         if (pcnt)
4784         {
4785                 strcpy(user->awaymsg,parameters[0]);
4786                 WriteServ(user->fd,"306 %s :You have been marked as being away",user->nick);
4787         }
4788         else
4789         {
4790                 strcpy(user->awaymsg,"");
4791                 WriteServ(user->fd,"305 %s :You are no longer marked as being away",user->nick);
4792         }
4793 }
4794
4795 void handle_whowas(char **parameters, int pcnt, userrec* user)
4796 {
4797         user_hash::iterator i = whowas.find(parameters[0]);
4798
4799         if (i == whowas.end())
4800         {
4801                 WriteServ(user->fd,"406 %s %s :There was no such nickname",user->nick,parameters[0]);
4802                 WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
4803         }
4804         else
4805         {
4806                 time_t rawtime = i->second->signon;
4807                 tm *timeinfo;
4808                 char b[MAXBUF];
4809
4810                 timeinfo = localtime(&rawtime);
4811                 strcpy(b,asctime(timeinfo));
4812                 b[strlen(b)-1] = '\0';
4813
4814                 WriteServ(user->fd,"314 %s %s %s %s * :%s",user->nick,i->second->nick,i->second->ident,i->second->dhost,i->second->fullname);
4815                 WriteServ(user->fd,"312 %s %s %s :%s",user->nick,i->second->nick,i->second->server,b);
4816                 WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
4817         }
4818
4819 }
4820
4821 void handle_trace(char **parameters, int pcnt, userrec *user)
4822 {
4823         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
4824         {
4825                 if (i->second)
4826                 {
4827                         if (isnick(i->second->nick))
4828                         {
4829                                 if (strchr(i->second->modes,'o'))
4830                                 {
4831                                         WriteServ(user->fd,"205 %s :Oper 0 %s",user->nick,i->second->nick);
4832                                 }
4833                                 else
4834                                 {
4835                                         WriteServ(user->fd,"204 %s :User 0 %s",user->nick,i->second->nick);
4836                                 }
4837                         }
4838                         else
4839                         {
4840                                 WriteServ(user->fd,"203 %s :???? 0 [%s]",user->nick,i->second->host);
4841                         }
4842                 }
4843         }
4844 }
4845
4846 void handle_modules(char **parameters, int pcnt, userrec *user)
4847 {
4848         for (int i = 0; i < module_names.size(); i++)
4849         {
4850                         Version V = modules[i]->GetVersion();
4851                         char modulename[MAXBUF];
4852                         strncpy(modulename,module_names[i].c_str(),256);
4853                         WriteServ(user->fd,"900 %s :0x%08lx %d.%d.%d.%d %s",user->nick,modules[i],V.Major,V.Minor,V.Revision,V.Build,CleanFilename(modulename));
4854         }
4855 }
4856
4857 void handle_stats(char **parameters, int pcnt, userrec *user)
4858 {
4859         if (pcnt != 1)
4860         {
4861                 return;
4862         }
4863         if (strlen(parameters[0])>1)
4864         {
4865                 /* make the stats query 1 character long */
4866                 parameters[0][1] = '\0';
4867         }
4868
4869         /* stats m (list number of times each command has been used, plus bytecount) */
4870         if (!strcasecmp(parameters[0],"m"))
4871         {
4872                 for (int i = 0; i < cmdlist.size(); i++)
4873                 {
4874                         if (cmdlist[i].handler_function)
4875                         {
4876                                 if (cmdlist[i].use_count)
4877                                 {
4878                                         /* RPL_STATSCOMMANDS */
4879                                         WriteServ(user->fd,"212 %s %s %d %d",user->nick,cmdlist[i].command,cmdlist[i].use_count,cmdlist[i].total_bytes);
4880                                 }
4881                         }
4882                 }
4883
4884         }
4885
4886         /* stats z (debug and memory info) */
4887         if (!strcasecmp(parameters[0],"z"))
4888         {
4889                 WriteServ(user->fd,"249 %s :Users(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,clientlist.size(),clientlist.size()*sizeof(userrec),clientlist.bucket_count());
4890                 WriteServ(user->fd,"249 %s :Channels(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,chanlist.size(),chanlist.size()*sizeof(chanrec),chanlist.bucket_count());
4891                 WriteServ(user->fd,"249 %s :Commands(VECTOR) %d (%d bytes)",user->nick,cmdlist.size(),cmdlist.size()*sizeof(command_t));
4892                 WriteServ(user->fd,"249 %s :MOTD(VECTOR) %d, RULES(VECTOR) %d",user->nick,MOTD.size(),RULES.size());
4893                 WriteServ(user->fd,"249 %s :address_cache(HASH_MAP) %d (%d buckets)",user->nick,IP.size(),IP.bucket_count());
4894                 WriteServ(user->fd,"249 %s :Modules(VECTOR) %d (%d)",user->nick,modules.size(),modules.size()*sizeof(Module));
4895                 WriteServ(user->fd,"249 %s :ClassFactories(VECTOR) %d (%d)",user->nick,factory.size(),factory.size()*sizeof(ircd_module));
4896                 WriteServ(user->fd,"249 %s :Ports(STATIC_ARRAY) %d",user->nick,boundPortCount);
4897         }
4898
4899         /* stats o */
4900         if (!strcasecmp(parameters[0],"o"))
4901         {
4902                 for (int i = 0; i < ConfValueEnum("oper",&config_f); i++)
4903                 {
4904                         char LoginName[MAXBUF];
4905                         char HostName[MAXBUF];
4906                         char OperType[MAXBUF];
4907                         ConfValue("oper","name",i,LoginName,&config_f);
4908                         ConfValue("oper","host",i,HostName,&config_f);
4909                         ConfValue("oper","type",i,OperType,&config_f);
4910                         WriteServ(user->fd,"243 %s O %s * %s %s 0",user->nick,HostName,LoginName,OperType);
4911                 }
4912         }
4913
4914         /* stats l (show user I/O stats) */
4915         if (!strcasecmp(parameters[0],"l"))
4916         {
4917                 WriteServ(user->fd,"211 %s :server:port nick bytes_in cmds_in bytes_out cmds_out",user->nick);
4918                 for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
4919                 {
4920                         if (isnick(i->second->nick))
4921                         {
4922                                 WriteServ(user->fd,"211 %s :%s:%d %s %d %d %d %d",user->nick,ServerName,i->second->port,i->second->nick,i->second->bytes_in,i->second->cmds_in,i->second->bytes_out,i->second->cmds_out);
4923                         }
4924                         else
4925                         {
4926                                 WriteServ(user->fd,"211 %s :%s:%d (unknown@%d) %d %d %d %d",user->nick,ServerName,i->second->port,i->second->fd,i->second->bytes_in,i->second->cmds_in,i->second->bytes_out,i->second->cmds_out);
4927                         }
4928
4929                 }
4930         }
4931
4932         /* stats u (show server uptime) */
4933         if (!strcasecmp(parameters[0],"u"))
4934         {
4935                 time_t current_time = 0;
4936                 current_time = time(NULL);
4937                 time_t server_uptime = current_time - startup_time;
4938                 struct tm* stime;
4939                 stime = gmtime(&server_uptime);
4940                 /* i dont know who the hell would have an ircd running for over a year nonstop, but
4941                  * Craig suggested this, and it seemed a good idea so in it went */
4942                 if (stime->tm_year > 70)
4943                 {
4944                         WriteServ(user->fd,"242 %s :Server up %d years, %d days, %.2d:%.2d:%.2d",user->nick,(stime->tm_year-70),stime->tm_yday,stime->tm_hour,stime->tm_min,stime->tm_sec);
4945                 }
4946                 else
4947                 {
4948                         WriteServ(user->fd,"242 %s :Server up %d days, %.2d:%.2d:%.2d",user->nick,stime->tm_yday,stime->tm_hour,stime->tm_min,stime->tm_sec);
4949                 }
4950         }
4951
4952         WriteServ(user->fd,"219 %s %s :End of /STATS report",user->nick,parameters[0]);
4953         WriteOpers("*** Notice: Stats '%s' requested by %s (%s@%s)",parameters[0],user->nick,user->ident,user->host);
4954
4955 }
4956
4957 void handle_connect(char **parameters, int pcnt, userrec *user)
4958 {
4959         char Link_ServerName[1024];
4960         char Link_IPAddr[1024];
4961         char Link_Port[1024];
4962         char Link_Pass[1024];
4963         int LinkPort;
4964         bool found = false;
4965
4966         for (int i = 0; i < ConfValueEnum("link",&config_f); i++)
4967         {
4968                 ConfValue("link","name",i,Link_ServerName,&config_f);
4969                 ConfValue("link","ipaddr",i,Link_IPAddr,&config_f);
4970                 ConfValue("link","port",i,Link_Port,&config_f);
4971                 ConfValue("link","sendpass",i,Link_Pass,&config_f);
4972                 log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
4973                 LinkPort = atoi(Link_Port);
4974                 if (match(Link_ServerName,parameters[0])) {
4975                         found = true;
4976                 }
4977         }
4978
4979         if (!found) {
4980                 WriteServ(user->fd,"NOTICE %s :*** Failed to connect to %s: No servers matching this pattern are configured for linking.",user->nick,parameters[0]);
4981                 return;
4982         }
4983
4984         // TODO: Perform a check here to stop a server being linked twice!
4985
4986         WriteServ(user->fd,"NOTICE %s :*** Connecting to %s (%s) port %s...",user->nick,Link_ServerName,Link_IPAddr,Link_Port);
4987
4988         if (me[defaultRoute])
4989         {
4990
4991                 // at this point parameters[0] is an ip in a string.
4992                 // TODO: Look this up from the <link> blocks instead!
4993                 for (int j = 0; j < 255; j++) {
4994                         if (servers[j] == NULL) {
4995                                 servers[j] = new serverrec;
4996                                 strcpy(servers[j]->internal_addr,Link_IPAddr);
4997                                 servers[j]->internal_port = LinkPort;
4998                                 strcpy(servers[j]->name,Link_ServerName);
4999                                 log(DEBUG,"Allocated new serverrec");
5000                                 if (!me[defaultRoute]->BeginLink(Link_IPAddr,LinkPort,Link_Pass))
5001                                 {
5002                                         WriteServ(user->fd,"NOTICE %s :*** Failed to send auth packet to %s!",user->nick,Link_IPAddr);
5003                                 }
5004                                 return;
5005                         }
5006                 }
5007                 WriteServ(user->fd,"NOTICE %s :*** Failed to create server record for address %s!",user->nick,Link_IPAddr);
5008         }
5009         else
5010         {
5011                 WriteServ(user->fd,"NOTICE %s :No default route is defined for server connections on this server. You must define a server connection to be default route so that sockets can be bound to it.",user->nick);
5012         }
5013 }
5014
5015 void handle_squit(char **parameters, int pcnt, userrec *user)
5016 {
5017         // send out an squit across the mesh and then clear the server list (for local squit)
5018 }
5019
5020 char islast(serverrec* s)
5021 {
5022         char c = '`';
5023         for (int j = 0; j < 255; j++)
5024         {
5025                 if (servers[j] != NULL)
5026                 {
5027                         c = '|';
5028                 }
5029                 if (servers[j] == s)
5030                 {
5031                         c = '`';
5032                 }
5033         }
5034         return c;
5035 }
5036
5037 void handle_links(char **parameters, int pcnt, userrec *user)
5038 {
5039         WriteServ(user->fd,"364 %s %s %s :0 %s",user->nick,ServerName,ServerName,ServerDesc);
5040         for (int j = 0; j < 255; j++)
5041         {
5042                 if (servers[j] != NULL)
5043                 {
5044                         WriteServ(user->fd,"364 %s %s %s :1 %s",user->nick,servers[j]->name,ServerName,servers[j]->description);
5045                 }
5046         }
5047         WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
5048 }
5049
5050 void handle_map(char **parameters, int pcnt, userrec *user)
5051 {
5052         WriteServ(user->fd,"006 %s :%s",user->nick,ServerName);
5053         for (int j = 0; j < 255; j++)
5054         {
5055                 if (servers[j] != NULL)
5056                 {
5057                         WriteServ(user->fd,"006 %s :%c-%s",user->nick,islast(servers[j]),servers[j]->name);
5058                 }
5059         }
5060         WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
5061 }
5062
5063
5064 void handle_oper(char **parameters, int pcnt, userrec *user)
5065 {
5066         char LoginName[MAXBUF];
5067         char Password[MAXBUF];
5068         char OperType[MAXBUF];
5069         char TypeName[MAXBUF];
5070         char Hostname[MAXBUF];
5071         int i,j;
5072
5073         for (int i = 0; i < ConfValueEnum("oper",&config_f); i++)
5074         {
5075                 ConfValue("oper","name",i,LoginName,&config_f);
5076                 ConfValue("oper","password",i,Password,&config_f);
5077                 if ((!strcmp(LoginName,parameters[0])) && (!strcmp(Password,parameters[1])))
5078                 {
5079                         /* correct oper credentials */
5080                         ConfValue("oper","type",i,OperType,&config_f);
5081                         WriteOpers("*** %s (%s@%s) is now an IRC operator of type %s",user->nick,user->ident,user->host,OperType);
5082                         WriteServ(user->fd,"381 %s :You are now an IRC operator of type %s",user->nick,OperType);
5083                         WriteServ(user->fd,"MODE %s :+o",user->nick);
5084                         for (j =0; j < ConfValueEnum("type",&config_f); j++)
5085                         {
5086                                 ConfValue("type","name",j,TypeName,&config_f);
5087                                 if (!strcmp(TypeName,OperType))
5088                                 {
5089                                         /* found this oper's opertype */
5090                                         ConfValue("type","host",j,Hostname,&config_f);
5091                                         strncpy(user->dhost,Hostname,256);
5092                                 }
5093                         }
5094                         if (!strchr(user->modes,'o'))
5095                         {
5096                                 strcat(user->modes,"o");
5097                         }
5098                         FOREACH_MOD OnOper(user);
5099                         return;
5100                 }
5101         }
5102         /* no such oper */
5103         WriteServ(user->fd,"491 %s :Invalid oper credentials",user->nick);
5104         WriteOpers("*** WARNING! Failed oper attempt by %s!%s@%s!",user->nick,user->ident,user->host);
5105 }
5106
5107 void handle_nick(char **parameters, int pcnt, userrec *user)
5108 {
5109         if (pcnt < 1)
5110         {
5111                 log(DEBUG,"not enough params for handle_nick");
5112                 return;
5113         }
5114         if (!parameters[0])
5115         {
5116                 log(DEBUG,"invalid parameter passed to handle_nick");
5117                 return;
5118         }
5119         if (!strlen(parameters[0]))
5120         {
5121                 log(DEBUG,"zero length new nick passed to handle_nick");
5122                 return;
5123         }
5124         if (!user)
5125         {
5126                 log(DEBUG,"invalid user passed to handle_nick");
5127                 return;
5128         }
5129         if (!user->nick)
5130         {
5131                 log(DEBUG,"invalid old nick passed to handle_nick");
5132                 return;
5133         }
5134         if (!strcasecmp(user->nick,parameters[0]))
5135         {
5136                 log(DEBUG,"old nick is new nick, skipping");
5137                 return;
5138         }
5139         else
5140         {
5141                 if (strlen(parameters[0]) > 1)
5142                 {
5143                         if (parameters[0][0] == ':')
5144                         {
5145                                 *parameters[0]++;
5146                         }
5147                 }
5148                 if ((Find(parameters[0])) && (Find(parameters[0]) != user))
5149                 {
5150                         WriteServ(user->fd,"433 %s %s :Nickname is already in use.",user->nick,parameters[0]);
5151                         return;
5152                 }
5153         }
5154         if (isnick(parameters[0]) == 0)
5155         {
5156                 WriteServ(user->fd,"432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
5157                 return;
5158         }
5159
5160         if (user->registered == 7)
5161         {
5162                 WriteCommon(user,"NICK %s",parameters[0]);
5163
5164                 // Q token must go to ALL servers!!!
5165                 char buffer[MAXBUF];
5166                 snprintf(buffer,MAXBUF,"n %s %s",user->nick,parameters[0]);
5167                 for (int j = 0; j < 255; j++)
5168                 {
5169                         if (servers[j] != NULL)
5170                         {
5171                                 if (strcmp(servers[j]->name,ServerName))
5172                                 {
5173                                         me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
5174                                         log(DEBUG,"Sent n token");
5175                                 }
5176                         }
5177                 }
5178
5179         }
5180
5181         /* change the nick of the user in the users_hash */
5182         user = ReHashNick(user->nick, parameters[0]);
5183         /* actually change the nick within the record */
5184         if (!user) return;
5185         if (!user->nick) return;
5186
5187         strncpy(user->nick, parameters[0],NICKMAX);
5188
5189         log(DEBUG,"new nick set: %s",user->nick);
5190
5191         if (user->registered < 3)
5192                 user->registered = (user->registered | 2);
5193         if (user->registered == 3)
5194         {
5195                 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
5196                 ConnectUser(user);
5197         }
5198         log(DEBUG,"exit nickchange: %s",user->nick);
5199 }
5200
5201 void force_nickchange(userrec* user,const char* newnick)
5202 {
5203         char nick[MAXBUF];
5204         strcpy(nick,"");
5205
5206         if (user)
5207         {
5208                 if (newnick)
5209                 {
5210                         strncpy(nick,newnick,MAXBUF);
5211                 }
5212                 if (user->registered == 7)
5213                 {
5214                         char* pars[1];
5215                         pars[0] = nick;
5216                         handle_nick(pars,1,user);
5217                 }
5218         }
5219 }
5220
5221
5222 int process_parameters(char **command_p,char *parameters)
5223 {
5224         int i = 0;
5225         int j = 0;
5226         int q = 0;
5227         q = strlen(parameters);
5228         if (!q)
5229         {
5230                 /* no parameters, command_p invalid! */
5231                 return 0;
5232         }
5233         if (parameters[0] == ':')
5234         {
5235                 command_p[0] = parameters+1;
5236                 return 1;
5237         }
5238         if (q)
5239         {
5240                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
5241                 {
5242                         /* only one parameter */
5243                         command_p[0] = parameters;
5244                         if (parameters[0] == ':')
5245                         {
5246                                 if (strchr(parameters,' ') != NULL)
5247                                 {
5248                                         command_p[0]++;
5249                                 }
5250                         }
5251                         return 1;
5252                 }
5253         }
5254         command_p[j++] = parameters;
5255         for (int i = 0; i <= q; i++)
5256         {
5257                 if (parameters[i] == ' ')
5258                 {
5259                         command_p[j++] = parameters+i+1;
5260                         parameters[i] = '\0';
5261                         if (command_p[j-1][0] == ':')
5262                         {
5263                                 *command_p[j-1]++; /* remove dodgy ":" */
5264                                 break;
5265                                 /* parameter like this marks end of the sequence */
5266                         }
5267                 }
5268         }
5269         return j; /* returns total number of items in the list */
5270 }
5271
5272 void process_command(userrec *user, char* cmd)
5273 {
5274         char *parameters;
5275         char *command;
5276         char *command_p[127];
5277         char p[MAXBUF], temp[MAXBUF];
5278         int i, j, items, cmd_found;
5279
5280         for (int i = 0; i < 127; i++)
5281                 command_p[i] = NULL;
5282
5283         if (!user)
5284         {
5285                 return;
5286         }
5287         if (!cmd)
5288         {
5289                 return;
5290         }
5291         if (!strcmp(cmd,""))
5292         {
5293                 return;
5294         }
5295
5296         int total_params = 0;
5297         if (strlen(cmd)>2)
5298         {
5299                 for (int q = 0; q < strlen(cmd)-1; q++)
5300                 {
5301                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
5302                         {
5303                                 total_params++;
5304                                 // found a 'trailing', we dont count them after this.
5305                                 break;
5306                         }
5307                         if (cmd[q] == ' ')
5308                                 total_params++;
5309                 }
5310         }
5311
5312         // another phidjit bug...
5313         if (total_params > 126)
5314         {
5315                 kill_link(user,"Protocol violation (1)");
5316                 return;
5317         }
5318
5319         strcpy(temp,cmd);
5320
5321         string tmp = cmd;
5322         FOREACH_MOD OnServerRaw(tmp,true);
5323         const char* cmd2 = tmp.c_str();
5324         snprintf(cmd,512,"%s",cmd2);
5325
5326         if (!strchr(cmd,' '))
5327         {
5328                 /* no parameters, lets skip the formalities and not chop up
5329                  * the string */
5330                 log(DEBUG,"About to preprocess command with no params");
5331                 items = 0;
5332                 command_p[0] = NULL;
5333                 parameters = NULL;
5334                 for (int i = 0; i <= strlen(cmd); i++)
5335                 {
5336                         cmd[i] = toupper(cmd[i]);
5337                 }
5338                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
5339                 command = cmd;
5340         }
5341         else
5342         {
5343                 strcpy(cmd,"");
5344                 j = 0;
5345                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
5346                 for (int i = 0; i < strlen(temp); i++)
5347                 {
5348                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
5349                         {
5350                                 cmd[j++] = temp[i];
5351                                 cmd[j] = 0;
5352                         }
5353                 }
5354                 /* split the full string into a command plus parameters */
5355                 parameters = p;
5356                 strcpy(p," ");
5357                 command = cmd;
5358                 if (strchr(cmd,' '))
5359                 {
5360                         for (int i = 0; i <= strlen(cmd); i++)
5361                         {
5362                                 /* capitalise the command ONLY, leave params intact */
5363                                 cmd[i] = toupper(cmd[i]);
5364                                 /* are we nearly there yet?! :P */
5365                                 if (cmd[i] == ' ')
5366                                 {
5367                                         command = cmd;
5368                                         parameters = cmd+i+1;
5369                                         cmd[i] = '\0';
5370                                         break;
5371                                 }
5372                         }
5373                 }
5374                 else
5375                 {
5376                         for (int i = 0; i <= strlen(cmd); i++)
5377                         {
5378                                 cmd[i] = toupper(cmd[i]);
5379                         }
5380                 }
5381
5382         }
5383         cmd_found = 0;
5384
5385         if (strlen(command)>MAXCOMMAND)
5386         {
5387                 kill_link(user,"Protocol violation (2)");
5388                 return;
5389         }
5390
5391         for (int x = 0; x < strlen(command); x++)
5392         {
5393                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
5394                 {
5395                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
5396                         {
5397                                 if (strchr("@!\"$%^&*(){}[]_-=+;:'#~,.<>/?\\|`",command[x]))
5398                                 {
5399                                         kill_link(user,"Protocol violation (3)");
5400                                         return;
5401                                 }
5402                         }
5403                 }
5404         }
5405
5406         for (int i = 0; i != cmdlist.size(); i++)
5407         {
5408                 if (strcmp(cmdlist[i].command,""))
5409                 {
5410                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
5411                         {
5412                                 log(DEBUG,"Found matching command");
5413
5414                                 if (parameters)
5415                                 {
5416                                         if (strcmp(parameters,""))
5417                                         {
5418                                                 items = process_parameters(command_p,parameters);
5419                                         }
5420                                         else
5421                                         {
5422                                                 items = 0;
5423                                                 command_p[0] = NULL;
5424                                         }
5425                                 }
5426                                 else
5427                                 {
5428                                         items = 0;
5429                                         command_p[0] = NULL;
5430                                 }
5431
5432                                 if (user)
5433                                 {
5434                                         log(DEBUG,"Processing command");
5435
5436                                         /* activity resets the ping pending timer */
5437                                         user->nping = time(NULL) + 120;
5438                                         if ((items) < cmdlist[i].min_params)
5439                                         {
5440                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
5441                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
5442                                                 return;
5443                                         }
5444                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
5445                                         {
5446                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
5447                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
5448                                                 cmd_found = 1;
5449                                                 return;
5450                                         }
5451                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
5452                                          * deny command! */
5453                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
5454                                         {
5455                                                 if ((!isnick(user->nick)) || (user->registered != 7))
5456                                                 {
5457                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
5458                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
5459                                                         return;
5460                                                 }
5461                                         }
5462                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
5463                                         {
5464                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
5465                                                 if (cmdlist[i].handler_function)
5466                                                 {
5467                                                         /* ikky /stats counters */
5468                                                         if (temp)
5469                                                         {
5470                                                                 if (user)
5471                                                                 {
5472                                                                         user->bytes_in += strlen(temp);
5473                                                                         user->cmds_in++;
5474                                                                 }
5475                                                                 cmdlist[i].use_count++;
5476                                                                 cmdlist[i].total_bytes+=strlen(temp);
5477                                                         }
5478
5479                                                         /* WARNING: nothing may come after the
5480                                                          * command handler call, as the handler
5481                                                          * may free the user structure! */
5482
5483                                                         cmdlist[i].handler_function(command_p,items,user);
5484                                                 }
5485                                                 return;
5486                                         }
5487                                         else
5488                                         {
5489                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
5490                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
5491                                                 return;
5492                                         }
5493                                 }
5494                                 cmd_found = 1;
5495                         }
5496                 }
5497         }
5498         if ((!cmd_found) && (user))
5499         {
5500                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
5501                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
5502         }
5503 }
5504
5505
5506 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
5507 {
5508         command_t comm;
5509         /* create the command and push it onto the table */
5510         strcpy(comm.command,cmd);
5511         comm.handler_function = f;
5512         comm.flags_needed = flags;
5513         comm.min_params = minparams;
5514         comm.use_count = 0;
5515         comm.total_bytes = 0;
5516         cmdlist.push_back(comm);
5517         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
5518 }
5519
5520 void SetupCommandTable(void)
5521 {
5522         createcommand("USER",handle_user,0,4);
5523         createcommand("NICK",handle_nick,0,1);
5524         createcommand("QUIT",handle_quit,0,0);
5525         createcommand("VERSION",handle_version,0,0);
5526         createcommand("PING",handle_ping,0,1);
5527         createcommand("PONG",handle_pong,0,1);
5528         createcommand("ADMIN",handle_admin,0,0);
5529         createcommand("PRIVMSG",handle_privmsg,0,2);
5530         createcommand("INFO",handle_info,0,0);
5531         createcommand("TIME",handle_time,0,0);
5532         createcommand("WHOIS",handle_whois,0,1);
5533         createcommand("WALLOPS",handle_wallops,'o',1);
5534         createcommand("NOTICE",handle_notice,0,2);
5535         createcommand("JOIN",handle_join,0,1);
5536         createcommand("NAMES",handle_names,0,1);
5537         createcommand("PART",handle_part,0,1);
5538         createcommand("KICK",handle_kick,0,2);
5539         createcommand("MODE",handle_mode,0,1);
5540         createcommand("TOPIC",handle_topic,0,1);
5541         createcommand("WHO",handle_who,0,1);
5542         createcommand("MOTD",handle_motd,0,0);
5543         createcommand("RULES",handle_rules,0,0);
5544         createcommand("OPER",handle_oper,0,2);
5545         createcommand("LIST",handle_list,0,0);
5546         createcommand("DIE",handle_die,'o',1);
5547         createcommand("RESTART",handle_restart,'o',1);
5548         createcommand("KILL",handle_kill,'o',2);
5549         createcommand("REHASH",handle_rehash,'o',0);
5550         createcommand("LUSERS",handle_lusers,0,0);
5551         createcommand("STATS",handle_stats,0,1);
5552         createcommand("USERHOST",handle_userhost,0,1);
5553         createcommand("AWAY",handle_away,0,0);
5554         createcommand("ISON",handle_ison,0,0);
5555         createcommand("SUMMON",handle_summon,0,0);
5556         createcommand("USERS",handle_users,0,0);
5557         createcommand("INVITE",handle_invite,0,2);
5558         createcommand("PASS",handle_pass,0,1);
5559         createcommand("TRACE",handle_trace,'o',0);
5560         createcommand("WHOWAS",handle_whowas,0,1);
5561         createcommand("CONNECT",handle_connect,'o',1);
5562         createcommand("SQUIT",handle_squit,'o',1);
5563         createcommand("MODULES",handle_modules,'o',0);
5564         createcommand("LINKS",handle_links,0,0);
5565         createcommand("MAP",handle_map,0,0);
5566 }
5567
5568 void process_buffer(const char* cmdbuf,userrec *user)
5569 {
5570         if (!user)
5571         {
5572                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
5573                 return;
5574         }
5575         char cmd[MAXBUF];
5576         int i;
5577         if (!cmdbuf)
5578         {
5579                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
5580                 return;
5581         }
5582         if (!strcmp(cmdbuf,""))
5583         {
5584                 return;
5585         }
5586         strncpy(cmd,cmdbuf,MAXBUF);
5587         if (!strcmp(cmd,""))
5588         {
5589                 return;
5590         }
5591         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
5592         {
5593                 cmd[strlen(cmd)-1] = '\0';
5594         }
5595         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
5596         {
5597                 cmd[strlen(cmd)-1] = '\0';
5598         }
5599         if (!strcmp(cmd,""))
5600         {
5601                 return;
5602         }
5603         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
5604         tidystring(cmd);
5605         if ((user) && (cmd))
5606         {
5607                 process_command(user,cmd);
5608         }
5609 }
5610
5611 void DoSync(serverrec* serv, char* udp_host,int udp_port, long MyKey)
5612 {
5613         char data[MAXBUF];
5614         // send start of sync marker: Y <timestamp>
5615         snprintf(data,MAXBUF,"Y %d",time(NULL));
5616         serv->SendPacket(data,udp_host,udp_port,MyKey);
5617         // send users and channels
5618         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
5619         {
5620                 snprintf(data,MAXBUF,"N %d %s %s %s %s +%s %s :%s",u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->server,u->second->fullname);
5621                 serv->SendPacket(data,udp_host,udp_port,MyKey);
5622                 if (strcmp(chlist(u->second),""))
5623                 {
5624                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
5625                         serv->SendPacket(data,udp_host,udp_port,MyKey);
5626                 }
5627         }
5628         // send channel modes, topics etc...
5629         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
5630         {
5631                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
5632                 serv->SendPacket(data,udp_host,udp_port,MyKey);
5633                 if (strcmp(c->second->topic,""))
5634                 {
5635                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
5636                         serv->SendPacket(data,udp_host,udp_port,MyKey);
5637                 }
5638                 // send current banlist
5639
5640                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
5641                 {
5642                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
5643                         serv->SendPacket(data,udp_host,udp_port,MyKey);
5644                 }
5645         }
5646         // send end of sync marker: E <timestamp>
5647         snprintf(data,MAXBUF,"F %d",time(NULL));
5648         serv->SendPacket(data,udp_host,udp_port,MyKey);
5649 }
5650
5651
5652 void handle_O(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5653 {
5654         char* src = strtok(params," ");
5655         char* dest = strtok(NULL," :");
5656         char* text = strtok(NULL,"\r\n");
5657         text++;
5658
5659         userrec* user = Find(src);
5660         if (user)
5661         {
5662                 userrec* dst = Find(dest);
5663
5664                 if (dst)
5665                 {
5666                         WriteTo(user, dst, "NOTICE %s :%s", dst->nick, text);
5667                 }
5668                 else
5669                 {
5670                         chanrec* d = FindChan(dest);
5671                         if (d)
5672                         {
5673                                 ChanExceptSender(d, user, "NOTICE %s :%s", d->name, text);
5674                         }
5675                 }
5676         }
5677
5678 }
5679
5680
5681 void handle_P(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5682 {
5683         char* src = strtok(params," ");
5684         char* dest = strtok(NULL," :");
5685         char* text = strtok(NULL,"\r\n");
5686         text++;
5687
5688         userrec* user = Find(src);
5689         if (user)
5690         {
5691                 userrec* dst = Find(dest);
5692
5693                 if (dst)
5694                 {
5695                         WriteTo(user, dst, "PRIVMSG %s :%s", dst->nick, text);
5696                 }
5697                 else
5698                 {
5699                         chanrec* d = FindChan(dest);
5700                         if (d)
5701                         {
5702                                 ChanExceptSender(d, user, "PRIVMSG %s :%s", d->name, text);
5703                         }
5704                 }
5705         }
5706
5707 }
5708
5709
5710 void handle_T(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5711 {
5712         char* tm = strtok(params," ");
5713         char* setby = strtok(NULL," ");
5714         char* channel = strtok(NULL," :");
5715         char* topic = strtok(NULL,"\r\n");
5716         topic++;
5717         time_t TS = atoi(tm);
5718         chanrec* c = FindChan(channel);
5719         if (c)
5720         {
5721                 // in the case of topics and TS, the *NEWER*
5722                 if (TS <= c->topicset)
5723                 {
5724                         WriteChannelLocal(c,NULL,"TOPIC %s :%s",c->name,topic);
5725                         strncpy(c->topic,topic,MAXTOPIC);
5726                         strncpy(c->setby,setby,NICKMAX);
5727                 }
5728         }
5729 }
5730
5731 void handle_M(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5732 {
5733         char* pars[128];
5734         char original[MAXBUF],target[MAXBUF];
5735         strncpy(original,params,MAXBUF);
5736         int index = 0;
5737         char* parameter = strtok(params," ");
5738         strncpy(target,parameter,MAXBUF);
5739         while (parameter)
5740         {
5741                 pars[index++] = parameter;
5742                 parameter = strtok(NULL," ");
5743         }
5744         merge_mode(pars,--index);
5745         if (FindChan(target))
5746         {
5747                 WriteChannelLocal(FindChan(target), NULL, "MODE %s",original);
5748         }
5749         if (Find(target))
5750         {
5751                 WriteTo(NULL,Find(target),"MODE %s",original);
5752         }
5753 }
5754
5755 void handle_L(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5756 {
5757         char* nick = strtok(params," ");
5758         char* channel = strtok(NULL," :");
5759         char* reason = strtok(NULL,"\r\n");
5760         userrec* user = Find(nick);
5761         reason++;
5762         if (user)
5763         {
5764                 if (strcmp(reason,""))
5765                 {
5766                         del_channel(user,channel,reason,true);
5767                 }
5768                 else
5769                 {
5770                         del_channel(user,channel,NULL,true);
5771                 }
5772         }
5773 }
5774
5775 void handle_Q(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5776 {
5777         char* nick = strtok(params," :");
5778         char* reason = strtok(NULL,"\r\n");
5779         reason++;
5780
5781         userrec* user = Find(nick);
5782
5783         if (user)
5784         {
5785                 if (strlen(reason)>MAXQUIT)
5786                 {
5787                         reason[MAXQUIT-1] = '\0';
5788                 }
5789
5790
5791                 WriteCommonExcept(user,"QUIT :%s",reason);
5792
5793                 user_hash::iterator iter = clientlist.find(user->nick);
5794
5795                 if (iter != clientlist.end())
5796                 {
5797                         log(DEBUG,"deleting user hash value %d",iter->second);
5798                         if ((iter->second) && (user->registered == 7)) {
5799                                 delete iter->second;
5800                         }
5801                         clientlist.erase(iter);
5802                 }
5803
5804                 purge_empty_chans();
5805         }
5806 }
5807
5808 void handle_n(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5809 {
5810         char* oldnick = strtok(params," ");
5811         char* newnick = strtok(NULL," ");
5812
5813         userrec* user = Find(oldnick);
5814
5815         if (user)
5816         {
5817                 WriteCommon(user,"NICK %s",newnick);
5818                 user = ReHashNick(user->nick, newnick);
5819                 if (!user) return;
5820                 if (!user->nick) return;
5821                 strncpy(user->nick, newnick,NICKMAX);
5822                 log(DEBUG,"new nick set: %s",user->nick);
5823         }
5824 }
5825
5826 void handle_N(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5827 {
5828         char* tm = strtok(params," ");
5829         char* nick = strtok(NULL," ");
5830         char* host = strtok(NULL," ");
5831         char* dhost = strtok(NULL," ");
5832         char* ident = strtok(NULL," ");
5833         char* modes = strtok(NULL," ");
5834         char* server = strtok(NULL," :");
5835         char* gecos = strtok(NULL,"\r\n");
5836         gecos++;
5837         modes++;
5838         time_t TS = atoi(tm);
5839         user_hash::iterator iter = clientlist.find(nick);
5840         if (iter != clientlist.end())
5841         {
5842                 // nick collision
5843                 WriteOpers("Nickname collision: %s@%s != %s@%s",nick,server,iter->second->nick,iter->second->server);
5844                 if (TS >= iter->second->age)
5845                 {
5846                         char str[MAXBUF];
5847                         snprintf(str,MAXBUF,"Killed (Nick Collision (%s@%s < %s@%s))",nick,server,iter->second->nick,iter->second->server);
5848                         WriteServ(iter->second->fd, "KILL %s :%s",iter->second->nick,str);
5849                         // client on remote server is older than the local user, kill the local user
5850                         kill_link(iter->second,str);
5851                 }
5852         }
5853         clientlist[nick] = new userrec();
5854         // remote users have an fd of -1. This is so that our Write abstraction
5855         // routines know to route any messages to this record away to whatever server
5856         // theyre on.
5857         clientlist[nick]->fd = -1;
5858         strncpy(clientlist[nick]->nick, nick,NICKMAX);
5859         strncpy(clientlist[nick]->host, host,160);
5860         strncpy(clientlist[nick]->dhost, dhost,160);
5861         strncpy(clientlist[nick]->server, server,256);
5862         strncpy(clientlist[nick]->ident, ident,10); // +1 char to compensate for '~'
5863         strncpy(clientlist[nick]->fullname, gecos,128);
5864         clientlist[nick]->signon = TS;
5865         clientlist[nick]->nping = 0; // this is ignored for a remote user anyway.
5866         clientlist[nick]->lastping = 1;
5867         clientlist[nick]->port = 0; // so is this...
5868         clientlist[nick]->registered = 7; // this however we need to set for them to receive messages and appear online
5869         clientlist[nick]->idle_lastmsg = time(NULL); // this is unrealiable and wont actually be used locally
5870         for (int i = 0; i < MAXCHANS; i++)
5871         {
5872                 clientlist[nick]->chans[i].channel = NULL;
5873                 clientlist[nick]->chans[i].uc_modes = 0;
5874         }
5875 }
5876
5877 void handle_F(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5878 {
5879         long tdiff = time(NULL) - atoi(params);
5880         if (tdiff)
5881                 WriteOpers("TS split for %s -> %s: %d",source->name,reply->name,tdiff);
5882 }
5883
5884 void handle_J(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5885 {
5886         // IMPORTANT NOTE
5887         // The J token currently has no timestamp - this needs looking at
5888         // because it will allow splitriding.
5889         char* nick = strtok(params," ");
5890         char* channel = strtok(NULL," ");
5891         userrec* user = Find(nick);
5892         while (channel)
5893         {
5894                 if ((user != NULL) && (strcmp(channel,"")))
5895                 {
5896                         char privilage = '\0';
5897                         if (channel[0] != '#')
5898                         {
5899                                 privilage = channel[0];
5900                                 channel++;
5901                         }
5902                         add_channel(user,channel,"",true);
5903
5904                         // now work out the privilages they should have on each channel
5905                         // and send the appropriate servermodes.
5906                         for (int i = 0; i != MAXCHANS; i++)
5907                         {
5908                                 if (user->chans[i].channel)
5909                                 {
5910                                         if (!strcasecmp(user->chans[i].channel->name,channel))
5911                                         {
5912                                                 if (privilage == '@')
5913                                                 {
5914                                                         user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_OP;
5915                                                         WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +o %s",channel,user->nick);
5916                                                 }
5917                                                 if (privilage == '%')
5918                                                 {
5919                                                         user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_HOP;
5920                                                         WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +h %s",channel,user->nick);
5921                                                 }
5922                                                 if (privilage == '+')
5923                                                 {
5924                                                         user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_VOICE;
5925                                                         WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +o %s",channel,user->nick);
5926                                                 }
5927                                         }
5928                                 }
5929                         }
5930
5931                 }
5932                 channel = strtok(NULL," ");
5933         }
5934 }
5935
5936 void process_restricted_commands(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5937 {
5938         switch(token)
5939         {
5940                 // Y <TS>
5941                 // start netburst
5942                 case 'Y':
5943                         nb_start = time(NULL);
5944                         WriteOpers("Server %s is starting netburst.",source->name);
5945                 break;
5946                 // N <TS> <NICK> <HOST> <DHOST> <IDENT> <MODES> <SERVER> :<GECOS>
5947                 // introduce remote client
5948                 case 'N':
5949                         handle_N(token,params,source,reply,udp_host,udp_port);
5950                 break;
5951                 // n <NICK> <NEWNICK>
5952                 // change nickname of client -- a server should only be able to
5953                 // change the nicknames of clients that reside on it unless
5954                 // they are ulined.
5955                 case 'n':
5956                         handle_n(token,params,source,reply,udp_host,udp_port);
5957                 break;
5958                 // J <NICK> <CHANLIST>
5959                 // Join user to channel list, merge channel permissions
5960                 case 'J':
5961                         handle_J(token,params,source,reply,udp_host,udp_port);
5962                 break;
5963                 // T <TS> <CHANNEL> <TOPICSETTER> :<TOPIC>
5964                 // change channel topic (netburst only)
5965                 case 'T':
5966                         handle_T(token,params,source,reply,udp_host,udp_port);
5967                 break;
5968                 // M <TS> <TARGET> <MODES> [MODE-PARAMETERS]
5969                 // Set modes on an object
5970                 case 'M':
5971                         handle_M(token,params,source,reply,udp_host,udp_port);
5972                 break;
5973                 // P <SOURCE> <TARGET> :<TEXT>
5974                 // Send a private/channel message
5975                 case 'P':
5976                         handle_P(token,params,source,reply,udp_host,udp_port);
5977                 break;
5978                 // O <SOURCE> <TARGET> :<TEXT>
5979                 // Send a private/channel notice
5980                 case 'O':
5981                         handle_O(token,params,source,reply,udp_host,udp_port);
5982                 break;
5983                 // L <SOURCE> <CHANNEL> :<REASON>
5984                 // User parting a channel
5985                 case 'L':
5986                         handle_L(token,params,source,reply,udp_host,udp_port);
5987                 break;
5988                 // Q <SOURCE> :<REASON>
5989                 // user quitting
5990                 case 'Q':
5991                         handle_Q(token,params,source,reply,udp_host,udp_port);
5992                 break;
5993                 // F <TS>
5994                 // end netburst
5995                 case 'F':
5996                         WriteOpers("Server %s has completed netburst. (%d secs)",source->name,time(NULL)-nb_start);
5997                         handle_F(token,params,source,reply,udp_host,udp_port);
5998                 break;
5999                 // anything else
6000                 default:
6001                         WriteOpers("WARNING! Unknown datagram type '%c'",token);
6002                 break;
6003         }
6004 }
6005
6006
6007 void handle_link_packet(long theirkey, char* udp_msg, char* udp_host, int udp_port, serverrec *serv)
6008 {
6009         char response[10240];
6010         char token = udp_msg[0];
6011         char* params = udp_msg + 2;
6012         char finalparam[1024];
6013         strcpy(finalparam," :xxxx");
6014         if (strstr(params," :")) {
6015                 strncpy(finalparam,strstr(params," :"),1024);
6016         }
6017         if (token == 'S') {
6018                 // S test.chatspike.net password :ChatSpike InspIRCd test server
6019                 char* servername = strtok(params," ");
6020                 char* password = strtok(NULL," ");
6021                 char* serverdesc = finalparam+2;
6022                 WriteOpers("CONNECT from %s (%s)",servername,udp_host);
6023
6024
6025                 char Link_ServerName[1024];
6026                 char Link_IPAddr[1024];
6027                 char Link_Port[1024];
6028                 char Link_Pass[1024];
6029                 char Link_SendPass[1024];
6030                 int LinkPort = 0;
6031
6032                 // search for a corresponding <link> block in the config files
6033                 for (int i = 0; i < ConfValueEnum("link",&config_f); i++)
6034                 {
6035                         ConfValue("link","name",i,Link_ServerName,&config_f);
6036                         ConfValue("link","ipaddr",i,Link_IPAddr,&config_f);
6037                         ConfValue("link","port",i,Link_Port,&config_f);
6038                         ConfValue("link","recvpass",i,Link_Pass,&config_f);
6039                         ConfValue("link","sendpass",i,Link_SendPass,&config_f);
6040                         log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
6041                         LinkPort = atoi(Link_Port);
6042                         if (!strcasecmp(Link_ServerName,servername)) {
6043                                 if (!strcasecmp(Link_IPAddr,udp_host)) {
6044                                         if (LinkPort == udp_port) {
6045                                                 // we have a matching link line -
6046                                                 // send a 'diminutive' server message back...
6047                                                 snprintf(response,10240,"s %s %s :%s",ServerName,Link_SendPass,ServerDesc);
6048                                                 serv->SendPacket(response,udp_host,udp_port,0);
6049                                                 WriteOpers("CONNECT from %s accepted, authenticating",servername);
6050                                                 for (int j = 0; j < 255; j++) {
6051                                                         if (servers[j] == NULL) {
6052                                                                 servers[j] = new serverrec;
6053                                                                 strcpy(servers[j]->internal_addr,udp_host);
6054                                                                 strcpy(servers[j]->name,servername);
6055                                                                 strcpy(servers[j]->description,serverdesc);
6056                                                                 servers[j]->internal_port = udp_port;
6057                                                                 // create a server record for this server
6058                                                                 snprintf(response,10240,"O %d",MyKey);
6059                                                                 serv->SendPacket(response,udp_host,udp_port,0);
6060                                                                 return;
6061                                                         }
6062                                                 }
6063                                                 WriteOpers("Internal error connecting to %s, failed to create server record!",servername);
6064                                                 return;
6065                                         }
6066                                         else {
6067                                                 log(DEBUG,"Port numbers '%d' and '%d' don't match",LinkPort,udp_port);
6068                                         }
6069                                 }
6070                                 else {
6071                                         log(DEBUG,"IP Addresses '%s' and '%s' don't match",Link_IPAddr,udp_host);
6072                                 }
6073                         }
6074                         else {
6075                                 log(DEBUG,"Server names '%s' and '%s' don't match",Link_ServerName,servername);
6076                         }
6077                 }
6078                 serv->SendPacket("E :Access is denied (no matching link block)",udp_host,udp_port,0);
6079                 WriteOpers("CONNECT from %s denied, no matching link block",servername);
6080                 return;
6081         }
6082         else
6083         if (token == 'O') {
6084                 // if this is received, this means the server-ip that sent it said "OK" to credentials.
6085                 // only when a server says this do we exchange keys. The server MUST have an entry in the servers
6086                 // array, which is only added by an 'S' packet or BeginLink().
6087                 for (int i = 0; i < 255; i++) {
6088                         if (servers[i] != NULL) {
6089                                 if (!strcasecmp(servers[i]->internal_addr,udp_host)) {
6090                                         servers[i]->key = atoi(params);
6091                                         log(DEBUG,"Key for this server is now %d",servers[i]->key);
6092                                         DoSync(serv,udp_host,udp_port,MyKey);
6093                                         return;
6094                                 }
6095                         }
6096                 }
6097                 WriteOpers("\2WARNING!\2 Server ip %s attempted a key exchange, but is not in the authentication state! Possible intrusion attempt!",udp_host);
6098         }
6099         else
6100         if (token == 's') {
6101                 // S test.chatspike.net password :ChatSpike InspIRCd test server
6102                 char* servername = strtok(params," ");
6103                 char* password = strtok(NULL," ");
6104                 char* serverdesc = finalparam+2;
6105
6106                 // TODO: we should do a check here to ensure that this server is one we recently initiated a
6107                 // link with, and didnt hear an 's' or 'E' back from yet (these are the only two valid responses
6108                 // to an 'S' command. If we didn't recently send an 'S' to this server, theyre trying to spoof
6109                 // a connect, so put out an oper alert!
6110
6111
6112
6113
6114                 // for now, just accept all, we'll fix that later.
6115                 WriteOpers("%s accepted our link credentials ",servername);
6116
6117                 char Link_ServerName[1024];
6118                 char Link_IPAddr[1024];
6119                 char Link_Port[1024];
6120                 char Link_Pass[1024];
6121                 char Link_SendPass[1024];
6122                 int LinkPort = 0;
6123
6124                 // search for a corresponding <link> block in the config files
6125                 for (int i = 0; i < ConfValueEnum("link",&config_f); i++)
6126                 {
6127                         ConfValue("link","name",i,Link_ServerName,&config_f);
6128                         ConfValue("link","ipaddr",i,Link_IPAddr,&config_f);
6129                         ConfValue("link","port",i,Link_Port,&config_f);
6130                         ConfValue("link","recvpass",i,Link_Pass,&config_f);
6131                         ConfValue("link","sendpass",i,Link_SendPass,&config_f);
6132                         log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
6133                         LinkPort = atoi(Link_Port);
6134                         if (!strcasecmp(Link_ServerName,servername)) {
6135                                 if (!strcasecmp(Link_IPAddr,udp_host)) {
6136                                         if (LinkPort == udp_port) {
6137                                                 // matching link at this end too, we're all done!
6138                                                 // at this point we must begin key exchange and insert this
6139                                                 // server into our 'active' table.
6140                                                 for (int j = 0; j < 255; j++) {
6141                                                         if (servers[j] != NULL) {
6142                                                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
6143                                                                         strcpy(servers[j]->description,serverdesc);
6144                                                                         WriteOpers("Server %s authenticated, exchanging server keys...",servername);
6145                                                                         snprintf(response,10240,"O %d",MyKey);
6146                                                                         serv->SendPacket(response,udp_host,udp_port,0);
6147                                                                         return;
6148                                                                 }
6149                                                         }
6150                                                 }
6151                                                 WriteOpers("\2WARNING!\2 %s sent us an authentication packet but we are not authenticating with this server right noe! Possible intrusion attempt!",udp_host);
6152                                                 return;
6153
6154                                         }
6155                                         else {
6156                                                 log(DEBUG,"Port numbers '%d' and '%d' don't match",LinkPort,udp_port);
6157                                         }
6158                                 }
6159                                 else {
6160                                         log(DEBUG,"IP Addresses '%s' and '%s' don't match",Link_IPAddr,udp_host);
6161                                 }
6162                         }
6163                         else {
6164                                 log(DEBUG,"Server names '%s' and '%s' don't match",Link_ServerName,servername);
6165                         }
6166                 }
6167                 serv->SendPacket("E :Access is denied (no matching link block)",udp_host,udp_port,0);
6168                 WriteOpers("CONNECT from %s denied, no matching link block",servername);
6169                 return;
6170         }
6171         else
6172         if (token == 'E') {
6173                 char* error_message = finalparam+2;
6174                 WriteOpers("ERROR from %s: %s",udp_host,error_message);
6175                 // remove this server from any lists
6176                 for (int j = 0; j < 255; j++) {
6177                         if (servers[j] != NULL) {
6178                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
6179                                         delete servers[j];
6180                                         return;
6181                                 }
6182                         }
6183                 }
6184                 return;
6185         }
6186         else {
6187
6188                 serverrec* source_server = NULL;
6189
6190                 for (int j = 0; j < 255; j++) {
6191                         if (servers[j] != NULL) {
6192                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
6193                                         if (servers[j]->key == theirkey) {
6194                                                 // found a valid key for this server, can process restricted stuff here
6195                                                 process_restricted_commands(token,params,servers[j],serv,udp_host,udp_port);
6196                                                 return;
6197                                         }
6198                                 }
6199                         }
6200                 }
6201
6202                 log(DEBUG,"Unrecognised token or unauthenticated host in datagram from %s:%d: %c",udp_host,udp_port,token);
6203         }
6204 }
6205
6206 int reap_counter = 0;
6207
6208 int InspIRCd(void)
6209 {
6210         struct sockaddr_in client, server;
6211         char addrs[MAXBUF][255];
6212         int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
6213         socklen_t length;
6214         int count = 0, scanDetectTrigger = TRUE, showBanner = FALSE;
6215         int selectResult = 0, selectResult2 = 0;
6216         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
6217         char resolvedHost[MAXBUF];
6218         fd_set selectFds;
6219         struct timeval tv;
6220
6221         log_file = fopen("ircd.log","a+");
6222         if (!log_file)
6223         {
6224                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
6225                 Exit(ERROR);
6226         }
6227
6228         log(DEBUG,"InspIRCd: startup: begin");
6229         log(DEBUG,"$Id$");
6230         if (geteuid() == 0)
6231         {
6232                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
6233                 Exit(ERROR);
6234                 log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
6235         }
6236         SetupCommandTable();
6237         log(DEBUG,"InspIRCd: startup: default command table set up");
6238
6239         ReadConfig();
6240         if (strcmp(DieValue,""))
6241         {
6242                 printf("WARNING: %s\n\n",DieValue);
6243                 exit(0);
6244         }
6245         log(DEBUG,"InspIRCd: startup: read config");
6246
6247         int count2 = 0, count3 = 0;
6248
6249         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
6250         {
6251                 ConfValue("bind","port",count,configToken,&config_f);
6252                 ConfValue("bind","address",count,Addr,&config_f);
6253                 ConfValue("bind","type",count,Type,&config_f);
6254                 if (!strcmp(Type,"servers"))
6255                 {
6256                         char Default[MAXBUF];
6257                         strcpy(Default,"no");
6258                         ConfValue("bind","default",count,Default,&config_f);
6259                         if (strchr(Default,'y'))
6260                         {
6261                                 defaultRoute = count3;
6262                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
6263                         }
6264                         me[count3] = new serverrec(ServerName,100L,false);
6265                         me[count3]->CreateListener(Addr,atoi(configToken));
6266                         count3++;
6267                 }
6268                 else
6269                 {
6270                         ports[count2] = atoi(configToken);
6271                         strcpy(addrs[count2],Addr);
6272                         count2++;
6273                 }
6274                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
6275         }
6276         portCount = count2;
6277         UDPportCount = count3;
6278
6279         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
6280
6281         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
6282
6283         printf("\n");
6284
6285         /* BugFix By Craig! :p */
6286         count = 0;
6287         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
6288         {
6289                 char modfile[MAXBUF];
6290                 ConfValue("module","name",count2,configToken,&config_f);
6291                 sprintf(modfile,"%s/%s",MOD_PATH,configToken,&config_f);
6292                 printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
6293                 log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
6294                 /* If The File Doesnt exist, Trying to load it
6295                  * Will Segfault the IRCd.. So, check to see if
6296                  * it Exists, Before Proceeding. */
6297                 if (FileExists(modfile))
6298                 {
6299                         factory[count] = new ircd_module(modfile);
6300                         if (factory[count]->LastError())
6301                         {
6302                                 log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
6303                                 sprintf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
6304                                 Exit(ERROR);
6305                         }
6306                         if (factory[count]->factory)
6307                         {
6308                                 modules[count] = factory[count]->factory->CreateModule();
6309                                 /* save the module and the module's classfactory, if
6310                                  * this isnt done, random crashes can occur :/ */
6311                                 module_names.push_back(modfile);
6312                         }
6313                         else
6314                         {
6315                                 log(DEBUG,"Unable to load %s",modfile);
6316                                 sprintf("Unable to load %s\nExiting...\n",modfile);
6317                                 Exit(ERROR);
6318                         }
6319                         /* Increase the Count */
6320                         count++;
6321                 }
6322                 else
6323                 {
6324                         log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
6325                         printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
6326                 }
6327         }
6328         MODCOUNT = count - 1;
6329         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
6330
6331         printf("\nInspIRCd is now running!\n");
6332
6333         startup_time = time(NULL);
6334
6335         if (nofork)
6336         {
6337                 log(VERBOSE,"Not forking as -nofork was specified");
6338         }
6339         else
6340         {
6341                 if (DaemonSeed() == ERROR)
6342                 {
6343                         log(DEBUG,"InspIRCd: startup: can't daemonise");
6344                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
6345                         Exit(ERROR);
6346                 }
6347         }
6348
6349
6350         /* setup select call */
6351         FD_ZERO(&selectFds);
6352         log(DEBUG,"InspIRCd: startup: zero selects");
6353         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
6354
6355         for (count = 0; count < portCount; count++)
6356         {
6357                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
6358                 {
6359                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
6360                         return(ERROR);
6361                 }
6362                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
6363                 {
6364                         log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
6365                 }
6366                 else    /* well we at least bound to one socket so we'll continue */
6367                 {
6368                         boundPortCount++;
6369                 }
6370         }
6371
6372         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
6373
6374         /* if we didn't bind to anything then abort */
6375         if (boundPortCount == 0)
6376         {
6377                 log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
6378                 return (ERROR);
6379         }
6380
6381         length = sizeof (client);
6382         int flip_flop = 0, udp_port = 0;
6383         char udp_msg[MAXBUF], udp_host[MAXBUF];
6384
6385         /* main loop, this never returns */
6386         for (;;)
6387         {
6388
6389                 fd_set sfd;
6390                 struct timeval tval;
6391                 FD_ZERO(&sfd);
6392
6393                 user_hash::iterator count2 = clientlist.begin();
6394
6395                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
6396                 // them in a list, then reap the list every second or so.
6397                 if (reap_counter>5000)
6398                 {
6399                         if (fd_reap.size() > 0)
6400                         {
6401                                 for( int n = 0; n < fd_reap.size(); n++)
6402                                 {
6403                                         Blocking(fd_reap[n]);
6404                                         close(fd_reap[n]);
6405                                         NonBlocking(fd_reap[n]);
6406                                 }
6407                         }
6408                         fd_reap.clear();
6409                         reap_counter=0;
6410                 }
6411
6412
6413                 for (int x = 0; x != UDPportCount; x++)
6414                 {
6415                         long theirkey = 0;
6416                         if (me[x]->RecvPacket(udp_msg, udp_host, udp_port, theirkey))
6417                         {
6418                                 if (strlen(udp_msg)<1) {
6419                                 log(DEBUG,"Invalid datagram from %s:%d:%d [route%d]",udp_host,udp_port,me[x]->port,x);
6420                         }
6421                         else
6422                         {
6423                                 FOREACH_MOD OnPacketReceive(udp_msg);
6424                                 // Packets must go back via the route they arrived on :)
6425                                 handle_link_packet(theirkey, udp_msg, udp_host, udp_port, me[x]);
6426                                 // link packets can manipulate the usertable so beware of
6427                                 // any loops here watching the user or channels hash
6428                                 log(DEBUG,"Sync: exit 3");
6429                                 goto label;
6430                         }
6431                 }
6432         }
6433
6434
6435         while (count2 != clientlist.end())
6436         {
6437                 char data[10240];
6438                 tval.tv_usec = tval.tv_sec = 0;
6439                 FD_ZERO(&sfd);
6440                 int total_in_this_set = 0;
6441
6442                 user_hash::iterator xcount = count2;
6443                 user_hash::iterator endingiter = count2;
6444
6445                 if (!count2->second) break;
6446
6447                 if (count2->second)
6448                 if (count2->second->fd != 0)
6449                 {
6450                         // assemble up to 64 sockets into an fd_set
6451                         // to implement a pooling mechanism.
6452                         //
6453                         // This should be up to 64x faster than the
6454                         // old implementation.
6455                         while (total_in_this_set < 64)
6456                         {
6457                                 if (count2 != clientlist.end())
6458                                 {
6459                                         // we don't check the state of remote users.
6460                                         if (count2->second->fd > 0)
6461                                         {
6462                                                 FD_SET (count2->second->fd, &sfd);
6463
6464                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
6465                                                 // their connection class.
6466                                                 if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
6467                                                 {
6468                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
6469                                                         kill_link(count2->second,"Registration timeout");
6470                                                         goto label;
6471                                                 }
6472                                                 if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
6473                                                 {
6474                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
6475                                                         {
6476                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
6477                                                                 kill_link(count2->second,"Ping timeout");
6478                                                                 goto label;
6479                                                         }
6480                                                         Write(count2->second->fd,"PING :%s",ServerName);
6481                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
6482                                                         count2->second->lastping = 0;
6483                                                         count2->second->nping = time(NULL)+120;
6484                                                 }
6485                                         }
6486                                         count2++;
6487                                         total_in_this_set++;
6488                                 }
6489                                 else break;
6490                         }
6491
6492                         endingiter = count2;
6493                         count2 = xcount; // roll back to where we were
6494
6495                         int v = 0;
6496
6497                         tval.tv_usec = 0;
6498                         tval.tv_sec = 0;
6499                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
6500
6501                         // now loop through all of the items in this pool if any are waiting
6502                         //if (selectResult2 > 0)
6503                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
6504                         {
6505                                 result = EAGAIN;
6506                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
6507                                 {
6508                                         log(DEBUG,"Reading fd %d",count2a->second->fd);
6509                                         memset(data, 0, 10240);
6510                                         result = read(count2a->second->fd, data, 10240);
6511
6512                                         if (result)
6513                                         {
6514                                                 log(DEBUG,"Read %d characters from socket",result);
6515                                                 userrec* current = count2a->second;
6516                                                 int currfd = current->fd;
6517                                                 char* l = strtok(data,"\n");
6518                                                 int floodlines = 0;
6519                                                 while (l)
6520                                                 {
6521                                                         floodlines++;
6522                                                         if ((floodlines > current->flood) && (current->flood != 0))
6523                                                         {
6524                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
6525                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
6526                                                                 kill_link(current,"Excess flood");
6527                                                                 goto label;
6528                                                         }
6529                                                         char sanitized[NetBufferSize];
6530                                                         memset(sanitized, 0, NetBufferSize);
6531                                                         int ptt = 0;
6532                                                         for (int pt = 0; pt < strlen(l); pt++)
6533                                                         {
6534                                                                 if (l[pt] != '\r')
6535                                                                 {
6536                                                                         sanitized[ptt++] = l[pt];
6537                                                                 }
6538                                                         }
6539                                                         sanitized[ptt] = '\0';
6540                                                         if (strlen(sanitized))
6541                                                         {
6542
6543
6544                                                                 // we're gonna re-scan to check if the nick is gone, after every
6545                                                                 // command - if it has, we're gonna bail
6546                                                                 bool find_again = false;
6547                                                                 process_buffer(sanitized,current);
6548
6549                                                                 // look for the user's record in case it's changed
6550                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
6551                                                                 {
6552                                                                         if (c2->second->fd == currfd)
6553                                                                         {
6554                                                                                 // found again, update pointer
6555                                                                                 current == c2->second;
6556                                                                                 find_again = true;
6557                                                                                 break;
6558                                                                         }
6559                                                                 }
6560                                                                 if (!find_again)
6561                                                                         goto label;
6562
6563                                                         }
6564                                                         l = strtok(NULL,"\n");
6565                                                 }
6566                                                 goto label;
6567                                         }
6568
6569                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
6570                                         {
6571                                                 log(DEBUG,"killing: %s",count2a->second->nick);
6572                                                 kill_link(count2a->second,strerror(errno));
6573                                                 goto label;
6574                                         }
6575                                 }
6576                                 // result EAGAIN means nothing read
6577                                 if (result == EAGAIN)
6578                                 {
6579                                 }
6580                                 else
6581                                 if (result == 0)
6582                                 {
6583                                         if (count2->second)
6584                                         {
6585                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
6586                                                 kill_link(count2a->second,"Client exited");
6587                                                 // must bail here? kill_link removes the hash, corrupting the iterator
6588                                                 log(DEBUG,"Bailing from client exit");
6589                                                 goto label;
6590                                         }
6591                                 }
6592                                 else if (result > 0)
6593                                 {
6594                                 }
6595                         }
6596                 }
6597                 for (int q = 0; q < total_in_this_set; q++)
6598                 {
6599                         // there is no iterator += operator :(
6600                         //if (count2 != clientlist.end())
6601                         //{
6602                                 count2++;
6603                         //}
6604                 }
6605         }
6606
6607         // set up select call
6608         for (count = 0; count < boundPortCount; count++)
6609         {
6610                 FD_SET (openSockfd[count], &selectFds);
6611         }
6612
6613         /* added timeout! select was waiting forever... wank... :/ */
6614         tv.tv_usec = 0;
6615
6616         flip_flop++;
6617         reap_counter++;
6618         if (flip_flop > 20)
6619         {
6620                 tv.tv_usec = 1;
6621                 flip_flop = 0;
6622         }
6623
6624         tv.tv_sec = 0;
6625         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
6626
6627         /* select is reporting a waiting socket. Poll them all to find out which */
6628         if (selectResult > 0)
6629         {
6630                 char target[MAXBUF], resolved[MAXBUF];
6631                 for (count = 0; count < boundPortCount; count++)
6632                 {
6633                         if (FD_ISSET (openSockfd[count], &selectFds))
6634                         {
6635                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
6636
6637                                 address_cache::iterator iter = IP.find(client.sin_addr);
6638                                 bool iscached = false;
6639                                 if (iter == IP.end())
6640                                 {
6641                                         /* ip isn't in cache, add it */
6642                                         strncpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
6643                                         if(CleanAndResolve(resolved, target) != TRUE)
6644                                         {
6645                                                 strncpy(resolved,target,MAXBUF);
6646                                         }
6647                                         /* hostname now in 'target' */
6648                                         IP[client.sin_addr] = new string(resolved);
6649                                         /* hostname in cache */
6650                                 }
6651                                 else
6652                                 {
6653                                         /* found ip (cached) */
6654                                         strncpy(resolved, iter->second->c_str(), MAXBUF);
6655                                         iscached = true;
6656                                 }
6657
6658                                 if (incomingSockfd < 0)
6659                                 {
6660                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
6661                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
6662                                 }
6663                                 else
6664                                 {
6665                                         AddClient(incomingSockfd, resolved, ports[count], iscached);
6666                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
6667                                 }
6668                                 goto label;
6669                         }
6670                 }
6671         }
6672         label:
6673         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
6674 }
6675 /* not reached */
6676 close (incomingSockfd);
6677 }
6678