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                 char buffer[MAXBUF];
3576                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
3577                 for (int j = 0; j < 255; j++)
3578                 {
3579                         if (servers[j] != NULL)
3580                         {
3581                                 if (CommonOnThisServer(user,servers[j]->name))
3582                                 {
3583                                         me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
3584                                         log(DEBUG,"Sent Q token");
3585                                 }
3586                         }
3587                 }
3588         }
3589
3590         /* push the socket on a stack of sockets due to be closed at the next opportunity
3591          * 'Client exited' is an exception to this as it means the client side has already
3592          * closed the socket, we don't need to do it.
3593          */
3594         fd_reap.push_back(user->fd);
3595
3596         bool do_purge = false;
3597
3598         if (user->registered == 7) {
3599                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
3600                 AddWhoWas(user);
3601         }
3602
3603         if (iter != clientlist.end())
3604         {
3605                 log(DEBUG,"deleting user hash value %d",iter->second);
3606                 if ((iter->second) && (user->registered == 7)) {
3607                         delete iter->second;
3608                 }
3609                 clientlist.erase(iter);
3610         }
3611
3612         if (user->registered == 7) {
3613                 purge_empty_chans();
3614         }
3615 }
3616
3617
3618 void handle_kill(char **parameters, int pcnt, userrec *user)
3619 {
3620         userrec *u = Find(parameters[0]);
3621         char killreason[MAXBUF];
3622
3623         log(DEBUG,"kill: %s %s",parameters[0],parameters[1]);
3624         if (u)
3625         {
3626                 WriteTo(user, u, "KILL %s :%s!%s!%s (%s)", u->nick, ServerName,user->dhost,user->nick,parameters[1]);
3627                 // :Brain!brain@NetAdmin.chatspike.net KILL [Brain] :homer!NetAdmin.chatspike.net!Brain (test kill)
3628                 WriteOpers("*** Local Kill by %s: %s!%s@%s (%s)",user->nick,u->nick,u->ident,u->host,parameters[1]);
3629                 sprintf(killreason,"Killed (%s (%s))",user->nick,parameters[1]);
3630                 kill_link(u,killreason);
3631         }
3632         else
3633         {
3634                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3635         }
3636 }
3637
3638 void handle_summon(char **parameters, int pcnt, userrec *user)
3639 {
3640         WriteServ(user->fd,"445 %s :SUMMON has been disabled (depreciated command)",user->nick);
3641 }
3642
3643 void handle_users(char **parameters, int pcnt, userrec *user)
3644 {
3645         WriteServ(user->fd,"445 %s :USERS has been disabled (depreciated command)",user->nick);
3646 }
3647
3648
3649 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
3650
3651 char* Passwd(userrec *user)
3652 {
3653         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3654         {
3655                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
3656                 {
3657                         return i->pass;
3658                 }
3659         }
3660         return "";
3661 }
3662
3663 bool IsDenied(userrec *user)
3664 {
3665         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3666         {
3667                 if (match(user->host,i->host) && (i->type == CC_DENY))
3668                 {
3669                         return true;
3670                 }
3671         }
3672         return false;
3673 }
3674
3675
3676
3677 void handle_pass(char **parameters, int pcnt, userrec *user)
3678 {
3679         // Check to make sure they havnt registered -- Fix by FCS
3680         if (user->registered == 7)
3681         {
3682                 WriteServ(user->fd,"462 %s :You may not reregister",user->nick);
3683                 return;
3684         }
3685         if (!strcasecmp(parameters[0],Passwd(user)))
3686         {
3687                 user->haspassed = true;
3688         }
3689 }
3690
3691 void handle_invite(char **parameters, int pcnt, userrec *user)
3692 {
3693         userrec* u = Find(parameters[0]);
3694         chanrec* c = FindChan(parameters[1]);
3695
3696         if ((!c) || (!u))
3697         {
3698                 if (!c)
3699                 {
3700                         WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]);
3701                 }
3702                 else
3703                 {
3704                         if (c->inviteonly)
3705                         {
3706                                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
3707                         }
3708                 }
3709
3710                 return;
3711         }
3712
3713         if (c->inviteonly)
3714         {
3715                 if (cstatus(user,c) < STATUS_HOP)
3716                 {
3717                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, c->name);
3718                         return;
3719                 }
3720         }
3721         if (has_channel(u,c))
3722         {
3723                 WriteServ(user->fd,"443 %s %s %s :Is already on channel %s",user->nick,u->nick,c->name,c->name);
3724                 return;
3725         }
3726         if (!has_channel(user,c))
3727         {
3728                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, c->name);
3729                 return;
3730         }
3731         u->InviteTo(c->name);
3732         WriteFrom(u->fd,user,"INVITE %s :%s",u->nick,c->name);
3733         WriteServ(user->fd,"341 %s %s %s",user->nick,u->nick,c->name);
3734 }
3735
3736 void handle_topic(char **parameters, int pcnt, userrec *user)
3737 {
3738         chanrec* Ptr;
3739
3740         if (pcnt == 1)
3741         {
3742                 if (strlen(parameters[0]) <= CHANMAX)
3743                 {
3744                         Ptr = FindChan(parameters[0]);
3745                         if (Ptr)
3746                         {
3747                                 if (Ptr->topicset)
3748                                 {
3749                                         WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
3750                                         WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
3751                                 }
3752                                 else
3753                                 {
3754                                         WriteServ(user->fd,"331 %s %s :No topic is set.", user->nick, Ptr->name);
3755                                 }
3756                         }
3757                         else
3758                         {
3759                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3760                         }
3761                 }
3762                 return;
3763         }
3764         else if (pcnt>1)
3765         {
3766                 if (strlen(parameters[0]) <= CHANMAX)
3767                 {
3768                         Ptr = FindChan(parameters[0]);
3769                         if (Ptr)
3770                         {
3771                                 if ((Ptr->topiclock) && (cstatus(user,Ptr)<STATUS_HOP))
3772                                 {
3773                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel", user->nick, Ptr->name);
3774                                         return;
3775                                 }
3776
3777                                 char topic[MAXBUF];
3778                                 strncpy(topic,parameters[1],MAXBUF);
3779                                 if (strlen(topic)>MAXTOPIC)
3780                                 {
3781                                         topic[MAXTOPIC-1] = '\0';
3782                                 }
3783
3784                                 strcpy(Ptr->topic,topic);
3785                                 strcpy(Ptr->setby,user->nick);
3786                                 Ptr->topicset = time(NULL);
3787                                 WriteChannel(Ptr,user,"TOPIC %s :%s",Ptr->name, Ptr->topic);
3788                         }
3789                         else
3790                         {
3791                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3792                         }
3793                 }
3794         }
3795 }
3796
3797 /* sends out an error notice to all connected clients (not to be used
3798  * lightly!) */
3799
3800 void send_error(char *s)
3801 {
3802         log(DEBUG,"send_error: %s",s);
3803         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3804         {
3805                 if (isnick(i->second->nick))
3806                 {
3807                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
3808                 }
3809                 else
3810                 {
3811                         // fix - unregistered connections receive ERROR, not NOTICE
3812                         Write(i->second->fd,"ERROR :%s",s);
3813                 }
3814         }
3815 }
3816
3817 void Error(int status)
3818 {
3819         signal (SIGALRM, SIG_IGN);
3820         signal (SIGPIPE, SIG_IGN);
3821         signal (SIGTERM, SIG_IGN);
3822         signal (SIGABRT, SIG_IGN);
3823         signal (SIGSEGV, SIG_IGN);
3824         signal (SIGURG, SIG_IGN);
3825         signal (SIGKILL, SIG_IGN);
3826         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
3827         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
3828         exit(status);
3829 }
3830
3831
3832 int main (int argc, char *argv[])
3833 {
3834         Start();
3835         log(DEBUG,"*** InspIRCd starting up!");
3836         if (!FileExists(CONFIG_FILE))
3837         {
3838                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
3839                 log(DEBUG,"main: no config");
3840                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
3841                 Exit(ERROR);
3842         }
3843         if (argc > 1) {
3844                 if (!strcmp(argv[1],"-nofork")) {
3845                         nofork = true;
3846                 }
3847         }
3848         if (InspIRCd() == ERROR)
3849         {
3850                 log(DEBUG,"main: daemon function bailed");
3851                 printf("ERROR: could not initialise. Shutting down.\n");
3852                 Exit(ERROR);
3853         }
3854         Exit(TRUE);
3855         return 0;
3856 }
3857
3858 template<typename T> inline string ConvToStr(const T &in)
3859 {
3860         stringstream tmp;
3861         if (!(tmp << in)) return string();
3862         return tmp.str();
3863 }
3864
3865 /* re-allocates a nick in the user_hash after they change nicknames,
3866  * returns a pointer to the new user as it may have moved */
3867
3868 userrec* ReHashNick(char* Old, char* New)
3869 {
3870         user_hash::iterator newnick;
3871         user_hash::iterator oldnick = clientlist.find(Old);
3872
3873         log(DEBUG,"ReHashNick: %s %s",Old,New);
3874
3875         if (!strcasecmp(Old,New))
3876         {
3877                 log(DEBUG,"old nick is new nick, skipping");
3878                 return oldnick->second;
3879         }
3880
3881         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
3882
3883         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
3884
3885         clientlist[New] = new userrec();
3886         clientlist[New] = oldnick->second;
3887         /*delete oldnick->second; */
3888         clientlist.erase(oldnick);
3889
3890         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
3891
3892         return clientlist[New];
3893 }
3894
3895 /* adds or updates an entry in the whowas list */
3896 void AddWhoWas(userrec* u)
3897 {
3898         user_hash::iterator iter = whowas.find(u->nick);
3899         userrec *a = new userrec();
3900         strcpy(a->nick,u->nick);
3901         strcpy(a->ident,u->ident);
3902         strcpy(a->dhost,u->dhost);
3903         strcpy(a->host,u->host);
3904         strcpy(a->fullname,u->fullname);
3905         strcpy(a->server,u->server);
3906         a->signon = u->signon;
3907
3908         /* MAX_WHOWAS:   max number of /WHOWAS items
3909          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
3910          *               can be replaced by a newer one
3911          */
3912
3913         if (iter == whowas.end())
3914         {
3915                 if (whowas.size() == WHOWAS_MAX)
3916                 {
3917                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
3918                         {
3919                                 // 3600 seconds in an hour ;)
3920                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
3921                                 {
3922                                         delete i->second;
3923                                         i->second = a;
3924                                         log(DEBUG,"added WHOWAS entry, purged an old record");
3925                                         return;
3926                                 }
3927                         }
3928                 }
3929                 else
3930                 {
3931                         log(DEBUG,"added fresh WHOWAS entry");
3932                         whowas[a->nick] = a;
3933                 }
3934         }
3935         else
3936         {
3937                 log(DEBUG,"updated WHOWAS entry");
3938                 delete iter->second;
3939                 iter->second = a;
3940         }
3941 }
3942
3943
3944 /* add a client connection to the sockets list */
3945 void AddClient(int socket, char* host, int port, bool iscached)
3946 {
3947         int i;
3948         int blocking = 1;
3949         char resolved[MAXBUF];
3950         string tempnick;
3951         char tn2[MAXBUF];
3952         user_hash::iterator iter;
3953
3954         tempnick = ConvToStr(socket) + "-unknown";
3955         sprintf(tn2,"%d-unknown",socket);
3956
3957         iter = clientlist.find(tempnick);
3958
3959         if (iter != clientlist.end()) return;
3960
3961         /*
3962          * It is OK to access the value here this way since we know
3963          * it exists, we just created it above.
3964          *
3965          * At NO other time should you access a value in a map or a
3966          * hash_map this way.
3967          */
3968         clientlist[tempnick] = new userrec();
3969
3970         NonBlocking(socket);
3971         log(DEBUG,"AddClient: %d %s %d",socket,host,port);
3972
3973         clientlist[tempnick]->fd = socket;
3974         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
3975         strncpy(clientlist[tempnick]->host, host,160);
3976         strncpy(clientlist[tempnick]->dhost, host,160);
3977         strncpy(clientlist[tempnick]->server, ServerName,256);
3978         strncpy(clientlist[tempnick]->ident, "unknown",9);
3979         clientlist[tempnick]->registered = 0;
3980         clientlist[tempnick]->signon = time(NULL);
3981         clientlist[tempnick]->nping = time(NULL)+240;
3982         clientlist[tempnick]->lastping = 1;
3983         clientlist[tempnick]->port = port;
3984
3985         if (iscached)
3986         {
3987                 WriteServ(socket,"NOTICE Auth :Found your hostname (cached)...");
3988         }
3989         else
3990         {
3991                 WriteServ(socket,"NOTICE Auth :Looking up your hostname...");
3992         }
3993
3994         // set the registration timeout for this user
3995         unsigned long class_regtimeout = 90;
3996         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3997         {
3998                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
3999                 {
4000                         class_regtimeout = (unsigned long)i->registration_timeout;
4001                         break;
4002                 }
4003         }
4004
4005         int class_flood = 0;
4006         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
4007         {
4008                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
4009                 {
4010                         class_flood = i->flood;
4011                         break;
4012                 }
4013         }
4014
4015         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
4016         clientlist[tempnick]->flood = class_flood;
4017
4018         for (int i = 0; i < MAXCHANS; i++)
4019         {
4020                 clientlist[tempnick]->chans[i].channel = NULL;
4021                 clientlist[tempnick]->chans[i].uc_modes = 0;
4022         }
4023
4024         if (clientlist.size() == MAXCLIENTS)
4025                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
4026 }
4027
4028 void handle_names(char **parameters, int pcnt, userrec *user)
4029 {
4030         chanrec* c;
4031
4032         if (loop_call(handle_names,parameters,pcnt,user,0,pcnt-1,0))
4033                 return;
4034         c = FindChan(parameters[0]);
4035         if (c)
4036         {
4037                 /*WriteServ(user->fd,"353 %s = %s :%s", user->nick, c->name,*/
4038                 userlist(user,c);
4039                 WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, c->name);
4040         }
4041         else
4042         {
4043                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4044         }
4045 }
4046
4047 void handle_privmsg(char **parameters, int pcnt, userrec *user)
4048 {
4049         userrec *dest;
4050         chanrec *chan;
4051
4052         user->idle_lastmsg = time(NULL);
4053
4054         if (loop_call(handle_privmsg,parameters,pcnt,user,0,pcnt-2,0))
4055                 return;
4056         if (parameters[0][0] == '#')
4057         {
4058                 chan = FindChan(parameters[0]);
4059                 if (chan)
4060                 {
4061                         if ((chan->noexternal) && (!has_channel(user,chan)))
4062                         {
4063                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
4064                                 return;
4065                         }
4066                         if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
4067                         {
4068                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
4069                                 return;
4070                         }
4071
4072                         int MOD_RESULT = 0;
4073
4074                         FOREACH_RESULT(OnUserPreMessage(user,chan,TYPE_CHANNEL,std::string(parameters[1])));
4075                         if (MOD_RESULT) {
4076                                 return;
4077                         }
4078
4079                         ChanExceptSender(chan, user, "PRIVMSG %s :%s", chan->name, parameters[1]);
4080
4081                         // if any users of this channel are on remote servers, broadcast the packet
4082                         char buffer[MAXBUF];
4083                         snprintf(buffer,MAXBUF,"P %s %s :%s",user->nick,chan->name,parameters[1]);
4084                         for (int j = 0; j < 255; j++)
4085                         {
4086                                 if (servers[j] != NULL)
4087                                 {
4088                                         if (ChanAnyOnThisServer(chan,servers[j]->name))
4089                                         {
4090                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4091                                         }
4092                                 }
4093                         }
4094                 }
4095                 else
4096                 {
4097                         /* no such nick/channel */
4098                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4099                 }
4100                 return;
4101         }
4102
4103         dest = Find(parameters[0]);
4104         if (dest)
4105         {
4106                 if (strcmp(dest->awaymsg,""))
4107                 {
4108                         /* auto respond with aweh msg */
4109                         WriteServ(user->fd,"301 %s %s :%s",user->nick,dest->nick,dest->awaymsg);
4110                 }
4111
4112                 int MOD_RESULT = 0;
4113
4114                 FOREACH_RESULT(OnUserPreMessage(user,dest,TYPE_USER,std::string(parameters[1])));
4115                 if (MOD_RESULT) {
4116                         return;
4117                 }
4118
4119
4120
4121                 if (!strcmp(dest->server,user->server))
4122                 {
4123                         // direct write, same server
4124                         WriteTo(user, dest, "PRIVMSG %s :%s", dest->nick, parameters[1]);
4125                 }
4126                 else
4127                 {
4128                         for (int j = 0; j < 255; j++)
4129                         {
4130                                 if (servers[j] != NULL)
4131                                 {
4132                                         if (!strcasecmp(servers[j]->name,dest->server))
4133                                         {
4134                                                 // direct write, same server
4135                                                 char buffer[MAXBUF];
4136                                                 snprintf(buffer,MAXBUF,"P %s %s :%s",user->nick,dest->nick,parameters[1]);
4137                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4138                                         }
4139                                 }
4140                         }
4141                 }
4142         }
4143         else
4144         {
4145                 /* no such nick/channel */
4146                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4147         }
4148 }
4149
4150 void handle_notice(char **parameters, int pcnt, userrec *user)
4151 {
4152         userrec *dest;
4153         chanrec *chan;
4154
4155         user->idle_lastmsg = time(NULL);
4156
4157         if (loop_call(handle_notice,parameters,pcnt,user,0,pcnt-2,0))
4158                 return;
4159         if (parameters[0][0] == '#')
4160         {
4161                 chan = FindChan(parameters[0]);
4162                 if (chan)
4163                 {
4164                         if ((chan->noexternal) && (!has_channel(user,chan)))
4165                         {
4166                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
4167                                 return;
4168                         }
4169                         if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
4170                         {
4171                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
4172                                 return;
4173                         }
4174
4175                         int MOD_RESULT = 0;
4176
4177                         FOREACH_RESULT(OnUserPreNotice(user,chan,TYPE_CHANNEL,std::string(parameters[1])));
4178                         if (MOD_RESULT) {
4179                                 return;
4180                         }
4181
4182                         ChanExceptSender(chan, user, "NOTICE %s :%s", chan->name, parameters[1]);
4183
4184                         // if any users of this channel are on remote servers, broadcast the packet
4185                         char buffer[MAXBUF];
4186                         snprintf(buffer,MAXBUF,"O %s %s :%s",user->nick,chan->name,parameters[1]);
4187                         for (int j = 0; j < 255; j++)
4188                         {
4189                                 if (servers[j] != NULL)
4190                                 {
4191                                         if (ChanAnyOnThisServer(chan,servers[j]->name))
4192                                         {
4193                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4194                                         }
4195                                 }
4196                         }
4197                 }
4198                 else
4199                 {
4200                         /* no such nick/channel */
4201                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4202                 }
4203                 return;
4204         }
4205
4206         dest = Find(parameters[0]);
4207         if (dest)
4208         {
4209                 int MOD_RESULT = 0;
4210
4211                 FOREACH_RESULT(OnUserPreNotice(user,dest,TYPE_USER,std::string(parameters[1])));
4212                 if (MOD_RESULT) {
4213                         return;
4214                 }
4215
4216                 if (!strcmp(dest->server,user->server))
4217                 {
4218                         // direct write, same server
4219                         WriteTo(user, dest, "NOTICE %s :%s", dest->nick, parameters[1]);
4220                 }
4221                 else
4222                 {
4223                         for (int j = 0; j < 255; j++)
4224                         {
4225                                 if (servers[j] != NULL)
4226                                 {
4227                                         if (!strcasecmp(servers[j]->name,dest->server))
4228                                         {
4229                                                 // direct write, same server
4230                                                 char buffer[MAXBUF];
4231                                                 snprintf(buffer,MAXBUF,"O %s %s :%s",user->nick,dest->nick,parameters[1]);
4232                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4233                                         }
4234                                 }
4235                         }
4236                 }
4237         }
4238         else
4239         {
4240                 /* no such nick/channel */
4241                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4242         }
4243 }
4244
4245 char lst[MAXBUF];
4246
4247 char* chlist(userrec *user)
4248 {
4249         int i = 0;
4250         char cmp[MAXBUF];
4251
4252         log(DEBUG,"chlist: %s",user->nick);
4253         strcpy(lst,"");
4254         if (!user)
4255         {
4256                 return lst;
4257         }
4258         for (int i = 0; i != MAXCHANS; i++)
4259         {
4260                 if (user->chans[i].channel != NULL)
4261                 {
4262                         if (user->chans[i].channel->name)
4263                         {
4264                                 strcpy(cmp,user->chans[i].channel->name);
4265                                 strcat(cmp," ");
4266                                 if (!strstr(lst,cmp))
4267                                 {
4268                                         if ((!user->chans[i].channel->c_private) && (!user->chans[i].channel->secret))
4269                                         {
4270                                                 strcat(lst,cmode(user,user->chans[i].channel));
4271                                                 strcat(lst,user->chans[i].channel->name);
4272                                                 strcat(lst," ");
4273                                         }
4274                                 }
4275                         }
4276                 }
4277         }
4278         if (strlen(lst))
4279         {
4280                 lst[strlen(lst)-1] = '\0'; // chop trailing space
4281         }
4282         return lst;
4283 }
4284
4285 void handle_info(char **parameters, int pcnt, userrec *user)
4286 {
4287         WriteServ(user->fd,"371 %s :The Inspire IRCd Project Has been brought to you by the following people..",user->nick);
4288         WriteServ(user->fd,"371 %s :Craig Edwards, Craig McLure, and Others..",user->nick);
4289         WriteServ(user->fd,"371 %s :Will finish this later when i can be arsed :p",user->nick);
4290         FOREACH_MOD OnInfo(user);
4291         WriteServ(user->fd,"374 %s :End of /INFO list",user->nick);
4292 }
4293
4294 void handle_time(char **parameters, int pcnt, userrec *user)
4295 {
4296         time_t rawtime;
4297         struct tm * timeinfo;
4298
4299         time ( &rawtime );
4300         timeinfo = localtime ( &rawtime );
4301         WriteServ(user->fd,"391 %s %s :%s",user->nick,ServerName, asctime (timeinfo) );
4302
4303 }
4304
4305 void handle_whois(char **parameters, int pcnt, userrec *user)
4306 {
4307         userrec *dest;
4308         char *t;
4309
4310         if (loop_call(handle_whois,parameters,pcnt,user,0,pcnt-1,0))
4311                 return;
4312         dest = Find(parameters[0]);
4313         if (dest)
4314         {
4315                 // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER
4316                 if (dest->registered == 7)
4317                 {
4318                         WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
4319                         if ((user == dest) || (strchr(user->modes,'o')))
4320                         {
4321                                 WriteServ(user->fd,"378 %s %s :is connecting from *@%s",user->nick, dest->nick, dest->host);
4322                         }
4323                         if (strcmp(chlist(dest),""))
4324                         {
4325                                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, chlist(dest));
4326                         }
4327                         WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, ServerDesc);
4328                         if (strcmp(dest->awaymsg,""))
4329                         {
4330                                 WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
4331                         }
4332                         if (strchr(dest->modes,'o'))
4333                         {
4334                                 WriteServ(user->fd,"313 %s %s :is an IRC operator",user->nick, dest->nick);
4335                         }
4336                         FOREACH_MOD OnWhois(user,dest);
4337                         //WriteServ(user->fd,"310 %s %s :is available for help.",user->nick, dest->nick);
4338                         WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-time(NULL)), dest->signon);
4339
4340                         WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
4341                 }
4342                 else
4343                 {
4344                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4345                 }
4346         }
4347         else
4348         {
4349                 /* no such nick/channel */
4350                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4351         }
4352 }
4353
4354 void handle_quit(char **parameters, int pcnt, userrec *user)
4355 {
4356         user_hash::iterator iter = clientlist.find(user->nick);
4357         char* reason;
4358
4359         if (user->registered == 7)
4360         {
4361                 /* theres more to do here, but for now just close the socket */
4362                 if (pcnt == 1)
4363                 {
4364                         if (parameters[0][0] == ':')
4365                         {
4366                                 *parameters[0]++;
4367                         }
4368                         reason = parameters[0];
4369
4370                         if (strlen(reason)>MAXQUIT)
4371                         {
4372                                 reason[MAXQUIT-1] = '\0';
4373                         }
4374
4375                         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,parameters[0]);
4376                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,parameters[0]);
4377                         WriteCommonExcept(user,"QUIT :%s%s",PrefixQuit,parameters[0]);
4378
4379                         char buffer[MAXBUF];
4380                         snprintf(buffer,MAXBUF,"Q %s :%s%s",user->nick,PrefixQuit,parameters[0]);
4381                         for (int j = 0; j < 255; j++)
4382                         {
4383                                 if (servers[j] != NULL)
4384                                 {
4385                                         if (CommonOnThisServer(user,servers[j]->name))
4386                                         {
4387                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4388                                                 log(DEBUG,"Sent Q token");
4389                                         }
4390                                         }
4391                         }
4392                 }
4393                 else
4394                 {
4395                         Write(user->fd,"ERROR :Closing link (%s@%s) [QUIT]",user->ident,user->host);
4396                         WriteOpers("*** Client exiting: %s!%s@%s [Client exited]",user->nick,user->ident,user->host);
4397                         WriteCommonExcept(user,"QUIT :Client exited");
4398
4399                         char buffer[MAXBUF];
4400                         snprintf(buffer,MAXBUF,"Q %s :Client exited",user->nick);
4401                         for (int j = 0; j < 255; j++)
4402                         {
4403                                 if (servers[j] != NULL)
4404                                 {
4405                                         if (CommonOnThisServer(user,servers[j]->name))
4406                                         {
4407                                                 me[defaultRoute]->SendPacket(buffer,servers[j]->internal_addr,servers[j]->internal_port,MyKey);
4408                                                 log(DEBUG,"Sent Q token");
4409                                         }
4410                                         }
4411                         }
4412                 }
4413                 FOREACH_MOD OnUserQuit(user);
4414                 AddWhoWas(user);
4415         }
4416
4417         /* push the socket on a stack of sockets due to be closed at the next opportunity */
4418         fd_reap.push_back(user->fd);
4419
4420         if (iter != clientlist.end())
4421         {
4422                 clientlist.erase(iter);
4423                 log(DEBUG,"deleting user hash value %d",iter->second);
4424                 //if ((user) && (user->registered == 7)) {
4425                         //delete user;
4426                 //}
4427         }
4428
4429         if (user->registered == 7) {
4430                 purge_empty_chans();
4431         }
4432 }
4433
4434 void handle_who(char **parameters, int pcnt, userrec *user)
4435 {
4436         chanrec* Ptr = NULL;
4437
4438         /* theres more to do here, but for now just close the socket */
4439         if (pcnt == 1)
4440         {
4441                 if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")))
4442                 {
4443                         if (user->chans[0].channel)
4444                         {
4445                                 Ptr = user->chans[0].channel;
4446                                 for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4447                                 {
4448                                         if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
4449                                         {
4450                                                 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);
4451                                         }
4452                                 }
4453                         }
4454                         if (Ptr)
4455                         {
4456                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
4457                         }
4458                         else
4459                         {
4460                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, user->nick);
4461                         }
4462                         return;
4463                 }
4464                 if (parameters[0][0] == '#')
4465                 {
4466                         Ptr = FindChan(parameters[0]);
4467                         if (Ptr)
4468                         {
4469                                 for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4470                                 {
4471                                         if ((has_channel(i->second,Ptr)) && (isnick(i->second->nick)))
4472                                         {
4473                                                 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);
4474                                         }
4475                                 }
4476                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
4477                         }
4478                         else
4479                         {
4480                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
4481                         }
4482                 }
4483                 else
4484                 {
4485                         userrec* u = Find(parameters[0]);
4486                         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);
4487                 }
4488         }
4489         if (pcnt == 2)
4490         {
4491                 if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")) && (!strcmp(parameters[1],"o")))
4492                 {
4493                         Ptr = user->chans[0].channel;
4494                         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4495                         {
4496                                 if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
4497                                 {
4498                                         if (strchr(i->second->modes,'o'))
4499                                         {
4500                                                 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);
4501                                         }
4502                                 }
4503                         }
4504                         WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
4505                         return;
4506                 }
4507         }
4508 }
4509
4510 void handle_wallops(char **parameters, int pcnt, userrec *user)
4511 {
4512         WriteWallOps(user,"%s",parameters[0]);
4513 }
4514
4515 void handle_list(char **parameters, int pcnt, userrec *user)
4516 {
4517         chanrec* Ptr;
4518
4519         WriteServ(user->fd,"321 %s Channel :Users Name",user->nick);
4520         for (chan_hash::const_iterator i = chanlist.begin(); i != chanlist.end(); i++)
4521         {
4522                 if ((!i->second->c_private) && (!i->second->secret))
4523                 {
4524                         WriteServ(user->fd,"322 %s %s %d :[+%s] %s",user->nick,i->second->name,usercount_i(i->second),chanmodes(i->second),i->second->topic);
4525                 }
4526         }
4527         WriteServ(user->fd,"323 %s :End of channel list.",user->nick);
4528 }
4529
4530
4531 void handle_rehash(char **parameters, int pcnt, userrec *user)
4532 {
4533         WriteServ(user->fd,"382 %s %s :Rehashing",user->nick,CleanFilename(CONFIG_FILE));
4534         ReadConfig();
4535         FOREACH_MOD OnRehash();
4536         WriteOpers("%s is rehashing config file %s",user->nick,CleanFilename(CONFIG_FILE));
4537 }
4538
4539
4540 int usercnt(void)
4541 {
4542         return clientlist.size();
4543 }
4544
4545
4546 int usercount_invisible(void)
4547 {
4548         int c = 0;
4549
4550         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4551         {
4552                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
4553         }
4554         return c;
4555 }
4556
4557 int usercount_opers(void)
4558 {
4559         int c = 0;
4560
4561         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4562         {
4563                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
4564         }
4565         return c;
4566 }
4567
4568 int usercount_unknown(void)
4569 {
4570         int c = 0;
4571
4572         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
4573         {
4574                 if ((i->second->fd) && (i->second->registered != 7))
4575                         c++;
4576         }
4577         return c;
4578 }
4579
4580 int chancount(void)
4581 {
4582         return chanlist.size();
4583 }
4584
4585 int servercount(void)
4586 {
4587         return 1;
4588 }
4589
4590 void handle_lusers(char **parameters, int pcnt, userrec *user)
4591 {
4592         WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),servercount());
4593         WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
4594         WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
4595         WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
4596         WriteServ(user->fd,"254 %s :I have %d clients and 0 servers",user->nick,usercnt());
4597 }
4598
4599 void handle_admin(char **parameters, int pcnt, userrec *user)
4600 {
4601         WriteServ(user->fd,"256 %s :Administrative info for %s",user->nick,ServerName);
4602         WriteServ(user->fd,"257 %s :Name     - %s",user->nick,AdminName);
4603         WriteServ(user->fd,"258 %s :Nickname - %s",user->nick,AdminNick);
4604         WriteServ(user->fd,"258 %s :E-Mail   - %s",user->nick,AdminEmail);
4605 }
4606
4607 void ShowMOTD(userrec *user)
4608 {
4609         if (!MOTD.size())
4610         {
4611                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
4612                 return;
4613         }
4614         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
4615         for (int i = 0; i != MOTD.size(); i++)
4616         {
4617                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
4618         }
4619         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
4620 }
4621
4622 void ShowRULES(userrec *user)
4623 {
4624         if (!RULES.size())
4625         {
4626                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
4627                 return;
4628         }
4629         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
4630         for (int i = 0; i != RULES.size(); i++)
4631         {
4632                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
4633         }
4634         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
4635 }
4636
4637 /* shows the message of the day, and any other on-logon stuff */
4638 void ConnectUser(userrec *user)
4639 {
4640         user->registered = 7;
4641         user->idle_lastmsg = time(NULL);
4642         log(DEBUG,"ConnectUser: %s",user->nick);
4643
4644         if (strcmp(Passwd(user),"") && (!user->haspassed))
4645         {
4646                 kill_link(user,"Invalid password");
4647                 return;
4648         }
4649         if (IsDenied(user))
4650         {
4651                 kill_link(user,"Unauthorised connection");
4652                 return;
4653         }
4654
4655         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
4656         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
4657         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
4658         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
4659         WriteServ(user->fd,"004 %s :%s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
4660         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);
4661         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);
4662         ShowMOTD(user);
4663         FOREACH_MOD OnUserConnect(user);
4664         WriteOpers("*** Client connecting on port %d: %s!%s@%s",user->port,user->nick,user->ident,user->host);
4665 }
4666
4667 void handle_version(char **parameters, int pcnt, userrec *user)
4668 {
4669         WriteServ(user->fd,"351 %s :%s %s %s :%s",user->nick,VERSION,"$Revision$ $Date$",ServerName,SYSTEM);
4670 }
4671
4672 void handle_ping(char **parameters, int pcnt, userrec *user)
4673 {
4674         WriteServ(user->fd,"PONG %s :%s",ServerName,parameters[0]);
4675 }
4676
4677 void handle_pong(char **parameters, int pcnt, userrec *user)
4678 {
4679         // set the user as alive so they survive to next ping
4680         user->lastping = 1;
4681 }
4682
4683 void handle_motd(char **parameters, int pcnt, userrec *user)
4684 {
4685         ShowMOTD(user);
4686 }
4687
4688 void handle_rules(char **parameters, int pcnt, userrec *user)
4689 {
4690         ShowRULES(user);
4691 }
4692
4693 void handle_user(char **parameters, int pcnt, userrec *user)
4694 {
4695         if (user->registered < 3)
4696         {
4697                 if (isident(parameters[0]) == 0) {
4698                         // This kinda Sucks, According to the RFC thou, its either this,
4699                         // or "You have already registered" :p -- Craig
4700                         WriteServ(user->fd,"461 %s USER :Not enough parameters",user->nick);
4701                 }
4702                 else {
4703                         WriteServ(user->fd,"NOTICE Auth :No ident response, ident prefixed with ~");
4704                         strcpy(user->ident,"~"); /* we arent checking ident... but these days why bother anyway? */
4705                         strncat(user->ident,parameters[0],IDENTMAX);
4706                         strncpy(user->fullname,parameters[3],128);
4707                         user->registered = (user->registered | 1);
4708                 }
4709         }
4710         else
4711         {
4712                 WriteServ(user->fd,"462 %s :You may not reregister",user->nick);
4713                 return;
4714         }
4715         /* parameters 2 and 3 are local and remote hosts, ignored when sent by client connection */
4716         if (user->registered == 3)
4717         {
4718                 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
4719                 ConnectUser(user);
4720         }
4721 }
4722
4723 void handle_userhost(char **parameters, int pcnt, userrec *user)
4724 {
4725         char Return[MAXBUF],junk[MAXBUF];
4726         sprintf(Return,"302 %s :",user->nick);
4727         for (int i = 0; i < pcnt; i++)
4728         {
4729                 userrec *u = Find(parameters[i]);
4730                 if (u)
4731                 {
4732                         if (strchr(u->modes,'o'))
4733                         {
4734                                 sprintf(junk,"%s*=+%s@%s ",u->nick,u->ident,u->host);
4735                                 strcat(Return,junk);
4736                         }
4737                         else
4738                         {
4739                                 sprintf(junk,"%s=+%s@%s ",u->nick,u->ident,u->host);
4740                                 strcat(Return,junk);
4741                         }
4742                 }
4743         }
4744         WriteServ(user->fd,Return);
4745 }
4746
4747
4748 void handle_ison(char **parameters, int pcnt, userrec *user)
4749 {
4750         char Return[MAXBUF];
4751         sprintf(Return,"303 %s :",user->nick);
4752         for (int i = 0; i < pcnt; i++)
4753         {
4754                 userrec *u = Find(parameters[i]);
4755                 if (u)
4756                 {
4757                         strcat(Return,u->nick);
4758                         strcat(Return," ");
4759                 }
4760         }
4761         WriteServ(user->fd,Return);
4762 }
4763
4764
4765 void handle_away(char **parameters, int pcnt, userrec *user)
4766 {
4767         if (pcnt)
4768         {
4769                 strcpy(user->awaymsg,parameters[0]);
4770                 WriteServ(user->fd,"306 %s :You have been marked as being away",user->nick);
4771         }
4772         else
4773         {
4774                 strcpy(user->awaymsg,"");
4775                 WriteServ(user->fd,"305 %s :You are no longer marked as being away",user->nick);
4776         }
4777 }
4778
4779 void handle_whowas(char **parameters, int pcnt, userrec* user)
4780 {
4781         user_hash::iterator i = whowas.find(parameters[0]);
4782
4783         if (i == whowas.end())
4784         {
4785                 WriteServ(user->fd,"406 %s %s :There was no such nickname",user->nick,parameters[0]);
4786                 WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
4787         }
4788         else
4789         {
4790                 time_t rawtime = i->second->signon;
4791                 tm *timeinfo;
4792                 char b[MAXBUF];
4793
4794                 timeinfo = localtime(&rawtime);
4795                 strcpy(b,asctime(timeinfo));
4796                 b[strlen(b)-1] = '\0';
4797
4798                 WriteServ(user->fd,"314 %s %s %s %s * :%s",user->nick,i->second->nick,i->second->ident,i->second->dhost,i->second->fullname);
4799                 WriteServ(user->fd,"312 %s %s %s :%s",user->nick,i->second->nick,i->second->server,b);
4800                 WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
4801         }
4802
4803 }
4804
4805 void handle_trace(char **parameters, int pcnt, userrec *user)
4806 {
4807         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
4808         {
4809                 if (i->second)
4810                 {
4811                         if (isnick(i->second->nick))
4812                         {
4813                                 if (strchr(i->second->modes,'o'))
4814                                 {
4815                                         WriteServ(user->fd,"205 %s :Oper 0 %s",user->nick,i->second->nick);
4816                                 }
4817                                 else
4818                                 {
4819                                         WriteServ(user->fd,"204 %s :User 0 %s",user->nick,i->second->nick);
4820                                 }
4821                         }
4822                         else
4823                         {
4824                                 WriteServ(user->fd,"203 %s :???? 0 [%s]",user->nick,i->second->host);
4825                         }
4826                 }
4827         }
4828 }
4829
4830 void handle_modules(char **parameters, int pcnt, userrec *user)
4831 {
4832         for (int i = 0; i < module_names.size(); i++)
4833         {
4834                         Version V = modules[i]->GetVersion();
4835                         char modulename[MAXBUF];
4836                         strncpy(modulename,module_names[i].c_str(),256);
4837                         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));
4838         }
4839 }
4840
4841 void handle_stats(char **parameters, int pcnt, userrec *user)
4842 {
4843         if (pcnt != 1)
4844         {
4845                 return;
4846         }
4847         if (strlen(parameters[0])>1)
4848         {
4849                 /* make the stats query 1 character long */
4850                 parameters[0][1] = '\0';
4851         }
4852
4853         /* stats m (list number of times each command has been used, plus bytecount) */
4854         if (!strcasecmp(parameters[0],"m"))
4855         {
4856                 for (int i = 0; i < cmdlist.size(); i++)
4857                 {
4858                         if (cmdlist[i].handler_function)
4859                         {
4860                                 if (cmdlist[i].use_count)
4861                                 {
4862                                         /* RPL_STATSCOMMANDS */
4863                                         WriteServ(user->fd,"212 %s %s %d %d",user->nick,cmdlist[i].command,cmdlist[i].use_count,cmdlist[i].total_bytes);
4864                                 }
4865                         }
4866                 }
4867
4868         }
4869
4870         /* stats z (debug and memory info) */
4871         if (!strcasecmp(parameters[0],"z"))
4872         {
4873                 WriteServ(user->fd,"249 %s :Users(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,clientlist.size(),clientlist.size()*sizeof(userrec),clientlist.bucket_count());
4874                 WriteServ(user->fd,"249 %s :Channels(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,chanlist.size(),chanlist.size()*sizeof(chanrec),chanlist.bucket_count());
4875                 WriteServ(user->fd,"249 %s :Commands(VECTOR) %d (%d bytes)",user->nick,cmdlist.size(),cmdlist.size()*sizeof(command_t));
4876                 WriteServ(user->fd,"249 %s :MOTD(VECTOR) %d, RULES(VECTOR) %d",user->nick,MOTD.size(),RULES.size());
4877                 WriteServ(user->fd,"249 %s :address_cache(HASH_MAP) %d (%d buckets)",user->nick,IP.size(),IP.bucket_count());
4878                 WriteServ(user->fd,"249 %s :Modules(VECTOR) %d (%d)",user->nick,modules.size(),modules.size()*sizeof(Module));
4879                 WriteServ(user->fd,"249 %s :ClassFactories(VECTOR) %d (%d)",user->nick,factory.size(),factory.size()*sizeof(ircd_module));
4880                 WriteServ(user->fd,"249 %s :Ports(STATIC_ARRAY) %d",user->nick,boundPortCount);
4881         }
4882
4883         /* stats o */
4884         if (!strcasecmp(parameters[0],"o"))
4885         {
4886                 for (int i = 0; i < ConfValueEnum("oper",&config_f); i++)
4887                 {
4888                         char LoginName[MAXBUF];
4889                         char HostName[MAXBUF];
4890                         char OperType[MAXBUF];
4891                         ConfValue("oper","name",i,LoginName,&config_f);
4892                         ConfValue("oper","host",i,HostName,&config_f);
4893                         ConfValue("oper","type",i,OperType,&config_f);
4894                         WriteServ(user->fd,"243 %s O %s * %s %s 0",user->nick,HostName,LoginName,OperType);
4895                 }
4896         }
4897
4898         /* stats l (show user I/O stats) */
4899         if (!strcasecmp(parameters[0],"l"))
4900         {
4901                 WriteServ(user->fd,"211 %s :server:port nick bytes_in cmds_in bytes_out cmds_out",user->nick);
4902                 for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
4903                 {
4904                         if (isnick(i->second->nick))
4905                         {
4906                                 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);
4907                         }
4908                         else
4909                         {
4910                                 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);
4911                         }
4912
4913                 }
4914         }
4915
4916         /* stats u (show server uptime) */
4917         if (!strcasecmp(parameters[0],"u"))
4918         {
4919                 time_t current_time = 0;
4920                 current_time = time(NULL);
4921                 time_t server_uptime = current_time - startup_time;
4922                 struct tm* stime;
4923                 stime = gmtime(&server_uptime);
4924                 /* i dont know who the hell would have an ircd running for over a year nonstop, but
4925                  * Craig suggested this, and it seemed a good idea so in it went */
4926                 if (stime->tm_year > 70)
4927                 {
4928                         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);
4929                 }
4930                 else
4931                 {
4932                         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);
4933                 }
4934         }
4935
4936         WriteServ(user->fd,"219 %s %s :End of /STATS report",user->nick,parameters[0]);
4937         WriteOpers("*** Notice: Stats '%s' requested by %s (%s@%s)",parameters[0],user->nick,user->ident,user->host);
4938
4939 }
4940
4941 void handle_connect(char **parameters, int pcnt, userrec *user)
4942 {
4943         char Link_ServerName[1024];
4944         char Link_IPAddr[1024];
4945         char Link_Port[1024];
4946         char Link_Pass[1024];
4947         int LinkPort;
4948         bool found = false;
4949
4950         for (int i = 0; i < ConfValueEnum("link",&config_f); i++)
4951         {
4952                 ConfValue("link","name",i,Link_ServerName,&config_f);
4953                 ConfValue("link","ipaddr",i,Link_IPAddr,&config_f);
4954                 ConfValue("link","port",i,Link_Port,&config_f);
4955                 ConfValue("link","sendpass",i,Link_Pass,&config_f);
4956                 log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
4957                 LinkPort = atoi(Link_Port);
4958                 if (match(Link_ServerName,parameters[0])) {
4959                         found = true;
4960                 }
4961         }
4962
4963         if (!found) {
4964                 WriteServ(user->fd,"NOTICE %s :*** Failed to connect to %s: No servers matching this pattern are configured for linking.",user->nick,parameters[0]);
4965                 return;
4966         }
4967
4968         // TODO: Perform a check here to stop a server being linked twice!
4969
4970         WriteServ(user->fd,"NOTICE %s :*** Connecting to %s (%s) port %s...",user->nick,Link_ServerName,Link_IPAddr,Link_Port);
4971
4972         if (me[defaultRoute])
4973         {
4974
4975                 // at this point parameters[0] is an ip in a string.
4976                 // TODO: Look this up from the <link> blocks instead!
4977                 for (int j = 0; j < 255; j++) {
4978                         if (servers[j] == NULL) {
4979                                 servers[j] = new serverrec;
4980                                 strcpy(servers[j]->internal_addr,Link_IPAddr);
4981                                 servers[j]->internal_port = LinkPort;
4982                                 strcpy(servers[j]->name,Link_ServerName);
4983                                 log(DEBUG,"Allocated new serverrec");
4984                                 if (!me[defaultRoute]->BeginLink(Link_IPAddr,LinkPort,Link_Pass))
4985                                 {
4986                                         WriteServ(user->fd,"NOTICE %s :*** Failed to send auth packet to %s!",user->nick,Link_IPAddr);
4987                                 }
4988                                 return;
4989                         }
4990                 }
4991                 WriteServ(user->fd,"NOTICE %s :*** Failed to create server record for address %s!",user->nick,Link_IPAddr);
4992         }
4993         else
4994         {
4995                 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);
4996         }
4997 }
4998
4999 void handle_squit(char **parameters, int pcnt, userrec *user)
5000 {
5001         // send out an squit across the mesh and then clear the server list (for local squit)
5002 }
5003
5004 char islast(serverrec* s)
5005 {
5006         char c = '`';
5007         for (int j = 0; j < 255; j++)
5008         {
5009                 if (servers[j] != NULL)
5010                 {
5011                         c = '|';
5012                 }
5013                 if (servers[j] == s)
5014                 {
5015                         c = '`';
5016                 }
5017         }
5018         return c;
5019 }
5020
5021 void handle_links(char **parameters, int pcnt, userrec *user)
5022 {
5023         WriteServ(user->fd,"364 %s %s %s :0 %s",user->nick,ServerName,ServerName,ServerDesc);
5024         for (int j = 0; j < 255; j++)
5025         {
5026                 if (servers[j] != NULL)
5027                 {
5028                         WriteServ(user->fd,"364 %s %s %s :1 %s",user->nick,servers[j]->name,ServerName,servers[j]->description);
5029                 }
5030         }
5031         WriteServ(user->fd,"365 %s * :End of /LINKS list.",user->nick);
5032 }
5033
5034 void handle_map(char **parameters, int pcnt, userrec *user)
5035 {
5036         WriteServ(user->fd,"006 %s :%s",user->nick,ServerName);
5037         for (int j = 0; j < 255; j++)
5038         {
5039                 if (servers[j] != NULL)
5040                 {
5041                         WriteServ(user->fd,"006 %s :%c-%s",user->nick,islast(servers[j]),servers[j]->name);
5042                 }
5043         }
5044         WriteServ(user->fd,"007 %s :End of /MAP",user->nick);
5045 }
5046
5047
5048 void handle_oper(char **parameters, int pcnt, userrec *user)
5049 {
5050         char LoginName[MAXBUF];
5051         char Password[MAXBUF];
5052         char OperType[MAXBUF];
5053         char TypeName[MAXBUF];
5054         char Hostname[MAXBUF];
5055         int i,j;
5056
5057         for (int i = 0; i < ConfValueEnum("oper",&config_f); i++)
5058         {
5059                 ConfValue("oper","name",i,LoginName,&config_f);
5060                 ConfValue("oper","password",i,Password,&config_f);
5061                 if ((!strcmp(LoginName,parameters[0])) && (!strcmp(Password,parameters[1])))
5062                 {
5063                         /* correct oper credentials */
5064                         ConfValue("oper","type",i,OperType,&config_f);
5065                         WriteOpers("*** %s (%s@%s) is now an IRC operator of type %s",user->nick,user->ident,user->host,OperType);
5066                         WriteServ(user->fd,"381 %s :You are now an IRC operator of type %s",user->nick,OperType);
5067                         WriteServ(user->fd,"MODE %s :+o",user->nick);
5068                         for (j =0; j < ConfValueEnum("type",&config_f); j++)
5069                         {
5070                                 ConfValue("type","name",j,TypeName,&config_f);
5071                                 if (!strcmp(TypeName,OperType))
5072                                 {
5073                                         /* found this oper's opertype */
5074                                         ConfValue("type","host",j,Hostname,&config_f);
5075                                         strncpy(user->dhost,Hostname,256);
5076                                 }
5077                         }
5078                         if (!strchr(user->modes,'o'))
5079                         {
5080                                 strcat(user->modes,"o");
5081                         }
5082                         FOREACH_MOD OnOper(user);
5083                         return;
5084                 }
5085         }
5086         /* no such oper */
5087         WriteServ(user->fd,"491 %s :Invalid oper credentials",user->nick);
5088         WriteOpers("*** WARNING! Failed oper attempt by %s!%s@%s!",user->nick,user->ident,user->host);
5089 }
5090
5091 void handle_nick(char **parameters, int pcnt, userrec *user)
5092 {
5093         if (pcnt < 1)
5094         {
5095                 log(DEBUG,"not enough params for handle_nick");
5096                 return;
5097         }
5098         if (!parameters[0])
5099         {
5100                 log(DEBUG,"invalid parameter passed to handle_nick");
5101                 return;
5102         }
5103         if (!strlen(parameters[0]))
5104         {
5105                 log(DEBUG,"zero length new nick passed to handle_nick");
5106                 return;
5107         }
5108         if (!user)
5109         {
5110                 log(DEBUG,"invalid user passed to handle_nick");
5111                 return;
5112         }
5113         if (!user->nick)
5114         {
5115                 log(DEBUG,"invalid old nick passed to handle_nick");
5116                 return;
5117         }
5118         if (!strcasecmp(user->nick,parameters[0]))
5119         {
5120                 log(DEBUG,"old nick is new nick, skipping");
5121                 return;
5122         }
5123         else
5124         {
5125                 if (strlen(parameters[0]) > 1)
5126                 {
5127                         if (parameters[0][0] == ':')
5128                         {
5129                                 *parameters[0]++;
5130                         }
5131                 }
5132                 if ((Find(parameters[0])) && (Find(parameters[0]) != user))
5133                 {
5134                         WriteServ(user->fd,"433 %s %s :Nickname is already in use.",user->nick,parameters[0]);
5135                         return;
5136                 }
5137         }
5138         if (isnick(parameters[0]) == 0)
5139         {
5140                 WriteServ(user->fd,"432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
5141                 return;
5142         }
5143
5144         if (user->registered == 7)
5145         {
5146                 WriteCommon(user,"NICK %s",parameters[0]);
5147         }
5148
5149         /* change the nick of the user in the users_hash */
5150         user = ReHashNick(user->nick, parameters[0]);
5151         /* actually change the nick within the record */
5152         if (!user) return;
5153         if (!user->nick) return;
5154
5155         strncpy(user->nick, parameters[0],NICKMAX);
5156
5157         log(DEBUG,"new nick set: %s",user->nick);
5158
5159         if (user->registered < 3)
5160                 user->registered = (user->registered | 2);
5161         if (user->registered == 3)
5162         {
5163                 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
5164                 ConnectUser(user);
5165         }
5166         log(DEBUG,"exit nickchange: %s",user->nick);
5167 }
5168
5169 void force_nickchange(userrec* user,const char* newnick)
5170 {
5171         char nick[MAXBUF];
5172         strcpy(nick,"");
5173
5174         if (user)
5175         {
5176                 if (newnick)
5177                 {
5178                         strncpy(nick,newnick,MAXBUF);
5179                 }
5180                 if (user->registered == 7)
5181                 {
5182                         char* pars[1];
5183                         pars[0] = nick;
5184                         handle_nick(pars,1,user);
5185                 }
5186         }
5187 }
5188
5189
5190 int process_parameters(char **command_p,char *parameters)
5191 {
5192         int i = 0;
5193         int j = 0;
5194         int q = 0;
5195         q = strlen(parameters);
5196         if (!q)
5197         {
5198                 /* no parameters, command_p invalid! */
5199                 return 0;
5200         }
5201         if (parameters[0] == ':')
5202         {
5203                 command_p[0] = parameters+1;
5204                 return 1;
5205         }
5206         if (q)
5207         {
5208                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
5209                 {
5210                         /* only one parameter */
5211                         command_p[0] = parameters;
5212                         if (parameters[0] == ':')
5213                         {
5214                                 if (strchr(parameters,' ') != NULL)
5215                                 {
5216                                         command_p[0]++;
5217                                 }
5218                         }
5219                         return 1;
5220                 }
5221         }
5222         command_p[j++] = parameters;
5223         for (int i = 0; i <= q; i++)
5224         {
5225                 if (parameters[i] == ' ')
5226                 {
5227                         command_p[j++] = parameters+i+1;
5228                         parameters[i] = '\0';
5229                         if (command_p[j-1][0] == ':')
5230                         {
5231                                 *command_p[j-1]++; /* remove dodgy ":" */
5232                                 break;
5233                                 /* parameter like this marks end of the sequence */
5234                         }
5235                 }
5236         }
5237         return j; /* returns total number of items in the list */
5238 }
5239
5240 void process_command(userrec *user, char* cmd)
5241 {
5242         char *parameters;
5243         char *command;
5244         char *command_p[127];
5245         char p[MAXBUF], temp[MAXBUF];
5246         int i, j, items, cmd_found;
5247
5248         for (int i = 0; i < 127; i++)
5249                 command_p[i] = NULL;
5250
5251         if (!user)
5252         {
5253                 return;
5254         }
5255         if (!cmd)
5256         {
5257                 return;
5258         }
5259         if (!strcmp(cmd,""))
5260         {
5261                 return;
5262         }
5263
5264         int total_params = 0;
5265         if (strlen(cmd)>2)
5266         {
5267                 for (int q = 0; q < strlen(cmd)-1; q++)
5268                 {
5269                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
5270                         {
5271                                 total_params++;
5272                                 // found a 'trailing', we dont count them after this.
5273                                 break;
5274                         }
5275                         if (cmd[q] == ' ')
5276                                 total_params++;
5277                 }
5278         }
5279
5280         // another phidjit bug...
5281         if (total_params > 126)
5282         {
5283                 kill_link(user,"Protocol violation (1)");
5284                 return;
5285         }
5286
5287         strcpy(temp,cmd);
5288
5289         string tmp = cmd;
5290         FOREACH_MOD OnServerRaw(tmp,true);
5291         const char* cmd2 = tmp.c_str();
5292         snprintf(cmd,512,"%s",cmd2);
5293
5294         if (!strchr(cmd,' '))
5295         {
5296                 /* no parameters, lets skip the formalities and not chop up
5297                  * the string */
5298                 log(DEBUG,"About to preprocess command with no params");
5299                 items = 0;
5300                 command_p[0] = NULL;
5301                 parameters = NULL;
5302                 for (int i = 0; i <= strlen(cmd); i++)
5303                 {
5304                         cmd[i] = toupper(cmd[i]);
5305                 }
5306                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
5307                 command = cmd;
5308         }
5309         else
5310         {
5311                 strcpy(cmd,"");
5312                 j = 0;
5313                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
5314                 for (int i = 0; i < strlen(temp); i++)
5315                 {
5316                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
5317                         {
5318                                 cmd[j++] = temp[i];
5319                                 cmd[j] = 0;
5320                         }
5321                 }
5322                 /* split the full string into a command plus parameters */
5323                 parameters = p;
5324                 strcpy(p," ");
5325                 command = cmd;
5326                 if (strchr(cmd,' '))
5327                 {
5328                         for (int i = 0; i <= strlen(cmd); i++)
5329                         {
5330                                 /* capitalise the command ONLY, leave params intact */
5331                                 cmd[i] = toupper(cmd[i]);
5332                                 /* are we nearly there yet?! :P */
5333                                 if (cmd[i] == ' ')
5334                                 {
5335                                         command = cmd;
5336                                         parameters = cmd+i+1;
5337                                         cmd[i] = '\0';
5338                                         break;
5339                                 }
5340                         }
5341                 }
5342                 else
5343                 {
5344                         for (int i = 0; i <= strlen(cmd); i++)
5345                         {
5346                                 cmd[i] = toupper(cmd[i]);
5347                         }
5348                 }
5349
5350         }
5351         cmd_found = 0;
5352
5353         if (strlen(command)>MAXCOMMAND)
5354         {
5355                 kill_link(user,"Protocol violation (2)");
5356                 return;
5357         }
5358
5359         for (int x = 0; x < strlen(command); x++)
5360         {
5361                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
5362                 {
5363                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
5364                         {
5365                                 if (strchr("@!\"$%^&*(){}[]_-=+;:'#~,.<>/?\\|`",command[x]))
5366                                 {
5367                                         kill_link(user,"Protocol violation (3)");
5368                                         return;
5369                                 }
5370                         }
5371                 }
5372         }
5373
5374         for (int i = 0; i != cmdlist.size(); i++)
5375         {
5376                 if (strcmp(cmdlist[i].command,""))
5377                 {
5378                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
5379                         {
5380                                 log(DEBUG,"Found matching command");
5381
5382                                 if (parameters)
5383                                 {
5384                                         if (strcmp(parameters,""))
5385                                         {
5386                                                 items = process_parameters(command_p,parameters);
5387                                         }
5388                                         else
5389                                         {
5390                                                 items = 0;
5391                                                 command_p[0] = NULL;
5392                                         }
5393                                 }
5394                                 else
5395                                 {
5396                                         items = 0;
5397                                         command_p[0] = NULL;
5398                                 }
5399
5400                                 if (user)
5401                                 {
5402                                         log(DEBUG,"Processing command");
5403
5404                                         /* activity resets the ping pending timer */
5405                                         user->nping = time(NULL) + 120;
5406                                         if ((items) < cmdlist[i].min_params)
5407                                         {
5408                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
5409                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
5410                                                 return;
5411                                         }
5412                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
5413                                         {
5414                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
5415                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
5416                                                 cmd_found = 1;
5417                                                 return;
5418                                         }
5419                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
5420                                          * deny command! */
5421                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
5422                                         {
5423                                                 if ((!isnick(user->nick)) || (user->registered != 7))
5424                                                 {
5425                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
5426                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
5427                                                         return;
5428                                                 }
5429                                         }
5430                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
5431                                         {
5432                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
5433                                                 if (cmdlist[i].handler_function)
5434                                                 {
5435                                                         /* ikky /stats counters */
5436                                                         if (temp)
5437                                                         {
5438                                                                 if (user)
5439                                                                 {
5440                                                                         user->bytes_in += strlen(temp);
5441                                                                         user->cmds_in++;
5442                                                                 }
5443                                                                 cmdlist[i].use_count++;
5444                                                                 cmdlist[i].total_bytes+=strlen(temp);
5445                                                         }
5446
5447                                                         /* WARNING: nothing may come after the
5448                                                          * command handler call, as the handler
5449                                                          * may free the user structure! */
5450
5451                                                         cmdlist[i].handler_function(command_p,items,user);
5452                                                 }
5453                                                 return;
5454                                         }
5455                                         else
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                                 cmd_found = 1;
5463                         }
5464                 }
5465         }
5466         if ((!cmd_found) && (user))
5467         {
5468                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
5469                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
5470         }
5471 }
5472
5473
5474 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
5475 {
5476         command_t comm;
5477         /* create the command and push it onto the table */
5478         strcpy(comm.command,cmd);
5479         comm.handler_function = f;
5480         comm.flags_needed = flags;
5481         comm.min_params = minparams;
5482         comm.use_count = 0;
5483         comm.total_bytes = 0;
5484         cmdlist.push_back(comm);
5485         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
5486 }
5487
5488 void SetupCommandTable(void)
5489 {
5490         createcommand("USER",handle_user,0,4);
5491         createcommand("NICK",handle_nick,0,1);
5492         createcommand("QUIT",handle_quit,0,0);
5493         createcommand("VERSION",handle_version,0,0);
5494         createcommand("PING",handle_ping,0,1);
5495         createcommand("PONG",handle_pong,0,1);
5496         createcommand("ADMIN",handle_admin,0,0);
5497         createcommand("PRIVMSG",handle_privmsg,0,2);
5498         createcommand("INFO",handle_info,0,0);
5499         createcommand("TIME",handle_time,0,0);
5500         createcommand("WHOIS",handle_whois,0,1);
5501         createcommand("WALLOPS",handle_wallops,'o',1);
5502         createcommand("NOTICE",handle_notice,0,2);
5503         createcommand("JOIN",handle_join,0,1);
5504         createcommand("NAMES",handle_names,0,1);
5505         createcommand("PART",handle_part,0,1);
5506         createcommand("KICK",handle_kick,0,2);
5507         createcommand("MODE",handle_mode,0,1);
5508         createcommand("TOPIC",handle_topic,0,1);
5509         createcommand("WHO",handle_who,0,1);
5510         createcommand("MOTD",handle_motd,0,0);
5511         createcommand("RULES",handle_rules,0,0);
5512         createcommand("OPER",handle_oper,0,2);
5513         createcommand("LIST",handle_list,0,0);
5514         createcommand("DIE",handle_die,'o',1);
5515         createcommand("RESTART",handle_restart,'o',1);
5516         createcommand("KILL",handle_kill,'o',2);
5517         createcommand("REHASH",handle_rehash,'o',0);
5518         createcommand("LUSERS",handle_lusers,0,0);
5519         createcommand("STATS",handle_stats,0,1);
5520         createcommand("USERHOST",handle_userhost,0,1);
5521         createcommand("AWAY",handle_away,0,0);
5522         createcommand("ISON",handle_ison,0,0);
5523         createcommand("SUMMON",handle_summon,0,0);
5524         createcommand("USERS",handle_users,0,0);
5525         createcommand("INVITE",handle_invite,0,2);
5526         createcommand("PASS",handle_pass,0,1);
5527         createcommand("TRACE",handle_trace,'o',0);
5528         createcommand("WHOWAS",handle_whowas,0,1);
5529         createcommand("CONNECT",handle_connect,'o',1);
5530         createcommand("SQUIT",handle_squit,'o',1);
5531         createcommand("MODULES",handle_modules,'o',0);
5532         createcommand("LINKS",handle_links,0,0);
5533         createcommand("MAP",handle_map,0,0);
5534 }
5535
5536 void process_buffer(const char* cmdbuf,userrec *user)
5537 {
5538         if (!user)
5539         {
5540                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
5541                 return;
5542         }
5543         char cmd[MAXBUF];
5544         int i;
5545         if (!cmdbuf)
5546         {
5547                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
5548                 return;
5549         }
5550         if (!strcmp(cmdbuf,""))
5551         {
5552                 return;
5553         }
5554         strncpy(cmd,cmdbuf,MAXBUF);
5555         if (!strcmp(cmd,""))
5556         {
5557                 return;
5558         }
5559         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
5560         {
5561                 cmd[strlen(cmd)-1] = '\0';
5562         }
5563         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
5564         {
5565                 cmd[strlen(cmd)-1] = '\0';
5566         }
5567         if (!strcmp(cmd,""))
5568         {
5569                 return;
5570         }
5571         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
5572         tidystring(cmd);
5573         if ((user) && (cmd))
5574         {
5575                 process_command(user,cmd);
5576         }
5577 }
5578
5579 void DoSync(serverrec* serv, char* udp_host,int udp_port, long MyKey)
5580 {
5581         char data[MAXBUF];
5582         // send start of sync marker: Y <timestamp>
5583         snprintf(data,MAXBUF,"Y %d",time(NULL));
5584         serv->SendPacket(data,udp_host,udp_port,MyKey);
5585         // send users and channels
5586         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
5587         {
5588                 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);
5589                 serv->SendPacket(data,udp_host,udp_port,MyKey);
5590                 if (strcmp(chlist(u->second),""))
5591                 {
5592                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
5593                         serv->SendPacket(data,udp_host,udp_port,MyKey);
5594                 }
5595         }
5596         // send channel modes, topics etc...
5597         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
5598         {
5599                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
5600                 serv->SendPacket(data,udp_host,udp_port,MyKey);
5601                 if (strcmp(c->second->topic,""))
5602                 {
5603                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
5604                         serv->SendPacket(data,udp_host,udp_port,MyKey);
5605                 }
5606                 // send current banlist
5607
5608                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
5609                 {
5610                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
5611                         serv->SendPacket(data,udp_host,udp_port,MyKey);
5612                 }
5613         }
5614         // send end of sync marker: E <timestamp>
5615         snprintf(data,MAXBUF,"F %d",time(NULL));
5616         serv->SendPacket(data,udp_host,udp_port,MyKey);
5617 }
5618
5619
5620 void handle_O(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5621 {
5622         char* src = strtok(params," ");
5623         char* dest = strtok(NULL," :");
5624         char* text = strtok(NULL,"\r\n");
5625         text++;
5626
5627         userrec* user = Find(src);
5628         if (user)
5629         {
5630                 userrec* dst = Find(dest);
5631
5632                 if (dst)
5633                 {
5634                         WriteTo(user, dst, "NOTICE %s :%s", dst->nick, text);
5635                 }
5636                 else
5637                 {
5638                         chanrec* d = FindChan(dest);
5639                         if (d)
5640                         {
5641                                 ChanExceptSender(d, user, "NOTICE %s :%s", d->name, text);
5642                         }
5643                 }
5644         }
5645
5646 }
5647
5648
5649 void handle_P(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5650 {
5651         char* src = strtok(params," ");
5652         char* dest = strtok(NULL," :");
5653         char* text = strtok(NULL,"\r\n");
5654         text++;
5655
5656         userrec* user = Find(src);
5657         if (user)
5658         {
5659                 userrec* dst = Find(dest);
5660
5661                 if (dst)
5662                 {
5663                         WriteTo(user, dst, "PRIVMSG %s :%s", dst->nick, text);
5664                 }
5665                 else
5666                 {
5667                         chanrec* d = FindChan(dest);
5668                         if (d)
5669                         {
5670                                 ChanExceptSender(d, user, "PRIVMSG %s :%s", d->name, text);
5671                         }
5672                 }
5673         }
5674
5675 }
5676
5677
5678 void handle_T(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5679 {
5680         char* tm = strtok(params," ");
5681         char* setby = strtok(NULL," ");
5682         char* channel = strtok(NULL," :");
5683         char* topic = strtok(NULL,"\r\n");
5684         topic++;
5685         time_t TS = atoi(tm);
5686         chanrec* c = FindChan(channel);
5687         if (c)
5688         {
5689                 // in the case of topics and TS, the *NEWER*
5690                 if (TS <= c->topicset)
5691                 {
5692                         WriteChannelLocal(c,NULL,"TOPIC %s :%s",c->name,topic);
5693                         strncpy(c->topic,topic,MAXTOPIC);
5694                         strncpy(c->setby,setby,NICKMAX);
5695                 }
5696         }
5697 }
5698
5699 void handle_M(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5700 {
5701         char* pars[128];
5702         char original[MAXBUF],target[MAXBUF];
5703         strncpy(original,params,MAXBUF);
5704         int index = 0;
5705         char* parameter = strtok(params," ");
5706         strncpy(target,parameter,MAXBUF);
5707         while (parameter)
5708         {
5709                 pars[index++] = parameter;
5710                 parameter = strtok(NULL," ");
5711         }
5712         merge_mode(pars,--index);
5713         if (FindChan(target))
5714         {
5715                 WriteChannelLocal(FindChan(target), NULL, "MODE %s",original);
5716         }
5717         if (Find(target))
5718         {
5719                 WriteTo(NULL,Find(target),"MODE %s",original);
5720         }
5721 }
5722
5723 void handle_L(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5724 {
5725         char* nick = strtok(params," ");
5726         char* channel = strtok(NULL," :");
5727         char* reason = strtok(NULL,"\r\n");
5728         userrec* user = Find(nick);
5729         reason++;
5730         if (user)
5731         {
5732                 if (strcmp(reason,""))
5733                 {
5734                         del_channel(user,channel,reason,true);
5735                 }
5736                 else
5737                 {
5738                         del_channel(user,channel,NULL,true);
5739                 }
5740         }
5741 }
5742
5743 void handle_Q(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5744 {
5745         char* nick = strtok(params," :");
5746         char* reason = strtok(NULL,"\r\n");
5747         reason++;
5748
5749         userrec* user = Find(nick);
5750
5751         if (user)
5752         {
5753                 if (strlen(reason)>MAXQUIT)
5754                 {
5755                         reason[MAXQUIT-1] = '\0';
5756                 }
5757
5758
5759                 WriteCommonExcept(user,"QUIT :%s",reason);
5760
5761                 user_hash::iterator iter = clientlist.find(user->nick);
5762
5763                 if (iter != clientlist.end())
5764                 {
5765                         log(DEBUG,"deleting user hash value %d",iter->second);
5766                         if ((iter->second) && (user->registered == 7)) {
5767                                 delete iter->second;
5768                         }
5769                         clientlist.erase(iter);
5770                 }
5771
5772                 purge_empty_chans();
5773         }
5774 }
5775
5776
5777 void handle_N(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5778 {
5779         char* tm = strtok(params," ");
5780         char* nick = strtok(NULL," ");
5781         char* host = strtok(NULL," ");
5782         char* dhost = strtok(NULL," ");
5783         char* ident = strtok(NULL," ");
5784         char* modes = strtok(NULL," ");
5785         char* server = strtok(NULL," :");
5786         char* gecos = strtok(NULL,"\r\n");
5787         gecos++;
5788         time_t TS = atoi(tm);
5789         user_hash::iterator iter = clientlist.find(nick);
5790         if (iter != clientlist.end())
5791         {
5792                 // nick collision
5793                 WriteOpers("Nickname collision: %s@%s != %s@%s",nick,server,iter->second->nick,iter->second->server);
5794                 if (TS >= iter->second->age)
5795                 {
5796                         char str[MAXBUF];
5797                         snprintf(str,MAXBUF,"Killed (Nick Collision (%s@%s < %s@%s))",nick,server,iter->second->nick,iter->second->server);
5798                         WriteServ(iter->second->fd, "KILL %s :%s",iter->second->nick,str);
5799                         // client on remote server is older than the local user, kill the local user
5800                         kill_link(iter->second,str);
5801                 }
5802         }
5803         clientlist[nick] = new userrec();
5804         // remote users have an fd of -1. This is so that our Write abstraction
5805         // routines know to route any messages to this record away to whatever server
5806         // theyre on.
5807         clientlist[nick]->fd = -1;
5808         strncpy(clientlist[nick]->nick, nick,NICKMAX);
5809         strncpy(clientlist[nick]->host, host,160);
5810         strncpy(clientlist[nick]->dhost, dhost,160);
5811         strncpy(clientlist[nick]->server, server,256);
5812         strncpy(clientlist[nick]->ident, ident,10); // +1 char to compensate for '~'
5813         strncpy(clientlist[nick]->fullname, gecos,128);
5814         clientlist[nick]->signon = TS;
5815         clientlist[nick]->nping = 0; // this is ignored for a remote user anyway.
5816         clientlist[nick]->lastping = 1;
5817         clientlist[nick]->port = 0; // so is this...
5818         clientlist[nick]->registered = 7; // this however we need to set for them to receive messages and appear online
5819         clientlist[nick]->idle_lastmsg = time(NULL); // this is unrealiable and wont actually be used locally
5820         for (int i = 0; i < MAXCHANS; i++)
5821         {
5822                 clientlist[nick]->chans[i].channel = NULL;
5823                 clientlist[nick]->chans[i].uc_modes = 0;
5824         }
5825 }
5826
5827 void handle_F(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5828 {
5829         long tdiff = time(NULL) - atoi(params);
5830         if (tdiff)
5831                 WriteOpers("TS split for %s -> %s: %d",source->name,reply->name,tdiff);
5832 }
5833
5834 void handle_J(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5835 {
5836         // IMPORTANT NOTE
5837         // The J token currently has no timestamp - this needs looking at
5838         // because it will allow splitriding.
5839         char* nick = strtok(params," ");
5840         char* channel = strtok(NULL," ");
5841         userrec* user = Find(nick);
5842         while (channel)
5843         {
5844                 if ((user != NULL) && (strcmp(channel,"")))
5845                 {
5846                         char privilage = '\0';
5847                         if (channel[0] != '#')
5848                         {
5849                                 privilage = channel[0];
5850                                 channel++;
5851                         }
5852                         add_channel(user,channel,"",true);
5853
5854                         // now work out the privilages they should have on each channel
5855                         // and send the appropriate servermodes.
5856                         for (int i = 0; i != MAXCHANS; i++)
5857                         {
5858                                 if (user->chans[i].channel)
5859                                 {
5860                                         if (!strcasecmp(user->chans[i].channel->name,channel))
5861                                         {
5862                                                 if (privilage == '@')
5863                                                 {
5864                                                         user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_OP;
5865                                                         WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +o %s",channel,user->nick);
5866                                                 }
5867                                                 if (privilage == '%')
5868                                                 {
5869                                                         user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_HOP;
5870                                                         WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +h %s",channel,user->nick);
5871                                                 }
5872                                                 if (privilage == '+')
5873                                                 {
5874                                                         user->chans[i].uc_modes = user->chans[i].uc_modes | UCMODE_VOICE;
5875                                                         WriteChannelLocal(user->chans[i].channel, NULL, "MODE %s +o %s",channel,user->nick);
5876                                                 }
5877                                         }
5878                                 }
5879                         }
5880
5881                 }
5882                 channel = strtok(NULL," ");
5883         }
5884 }
5885
5886 void process_restricted_commands(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
5887 {
5888         switch(token)
5889         {
5890                 // Y <TS>
5891                 // start netburst
5892                 case 'Y':
5893                         nb_start = time(NULL);
5894                         WriteOpers("Server %s is starting netburst.",source->name);
5895                 break;
5896                 // N <TS> <NICK> <HOST> <DHOST> <IDENT> <MODES> <SERVER> :<GECOS>
5897                 // introduce remote client
5898                 case 'N':
5899                         handle_N(token,params,source,reply,udp_host,udp_port);
5900                 break;
5901                 // J <NICK> <CHANLIST>
5902                 // Join user to channel list, merge channel permissions
5903                 case 'J':
5904                         handle_J(token,params,source,reply,udp_host,udp_port);
5905                 break;
5906                 // T <TS> <CHANNEL> <TOPICSETTER> :<TOPIC>
5907                 // change channel topic (netburst only)
5908                 case 'T':
5909                         handle_T(token,params,source,reply,udp_host,udp_port);
5910                 break;
5911                 // M <TS> <TARGET> <MODES> [MODE-PARAMETERS]
5912                 // Set modes on an object
5913                 case 'M':
5914                         handle_M(token,params,source,reply,udp_host,udp_port);
5915                 break;
5916                 // P <SOURCE> <TARGET> :<TEXT>
5917                 // Send a private/channel message
5918                 case 'P':
5919                         handle_P(token,params,source,reply,udp_host,udp_port);
5920                 break;
5921                 // O <SOURCE> <TARGET> :<TEXT>
5922                 // Send a private/channel notice
5923                 case 'O':
5924                         handle_O(token,params,source,reply,udp_host,udp_port);
5925                 break;
5926                 // L <SOURCE> <CHANNEL> :<REASON>
5927                 // User parting a channel
5928                 case 'L':
5929                         handle_L(token,params,source,reply,udp_host,udp_port);
5930                 break;
5931                 // Q <SOURCE> :<REASON>
5932                 // user quitting
5933                 case 'Q':
5934                         handle_Q(token,params,source,reply,udp_host,udp_port);
5935                 break;
5936                 // F <TS>
5937                 // end netburst
5938                 case 'F':
5939                         WriteOpers("Server %s has completed netburst. (%d secs)",source->name,time(NULL)-nb_start);
5940                         handle_F(token,params,source,reply,udp_host,udp_port);
5941                 break;
5942                 // anything else
5943                 default:
5944                         WriteOpers("WARNING! Unknown datagram type '%c'",token);
5945                 break;
5946         }
5947 }
5948
5949
5950 void handle_link_packet(long theirkey, char* udp_msg, char* udp_host, int udp_port, serverrec *serv)
5951 {
5952         char response[10240];
5953         char token = udp_msg[0];
5954         char* params = udp_msg + 2;
5955         char finalparam[1024];
5956         strcpy(finalparam," :xxxx");
5957         if (strstr(params," :")) {
5958                 strncpy(finalparam,strstr(params," :"),1024);
5959         }
5960         if (token == 'S') {
5961                 // S test.chatspike.net password :ChatSpike InspIRCd test server
5962                 char* servername = strtok(params," ");
5963                 char* password = strtok(NULL," ");
5964                 char* serverdesc = finalparam+2;
5965                 WriteOpers("CONNECT from %s (%s)",servername,udp_host);
5966
5967
5968                 char Link_ServerName[1024];
5969                 char Link_IPAddr[1024];
5970                 char Link_Port[1024];
5971                 char Link_Pass[1024];
5972                 char Link_SendPass[1024];
5973                 int LinkPort = 0;
5974
5975                 // search for a corresponding <link> block in the config files
5976                 for (int i = 0; i < ConfValueEnum("link",&config_f); i++)
5977                 {
5978                         ConfValue("link","name",i,Link_ServerName,&config_f);
5979                         ConfValue("link","ipaddr",i,Link_IPAddr,&config_f);
5980                         ConfValue("link","port",i,Link_Port,&config_f);
5981                         ConfValue("link","recvpass",i,Link_Pass,&config_f);
5982                         ConfValue("link","sendpass",i,Link_SendPass,&config_f);
5983                         log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
5984                         LinkPort = atoi(Link_Port);
5985                         if (!strcasecmp(Link_ServerName,servername)) {
5986                                 if (!strcasecmp(Link_IPAddr,udp_host)) {
5987                                         if (LinkPort == udp_port) {
5988                                                 // we have a matching link line -
5989                                                 // send a 'diminutive' server message back...
5990                                                 snprintf(response,10240,"s %s %s :%s",ServerName,Link_SendPass,ServerDesc);
5991                                                 serv->SendPacket(response,udp_host,udp_port,0);
5992                                                 WriteOpers("CONNECT from %s accepted, authenticating",servername);
5993                                                 for (int j = 0; j < 255; j++) {
5994                                                         if (servers[j] == NULL) {
5995                                                                 servers[j] = new serverrec;
5996                                                                 strcpy(servers[j]->internal_addr,udp_host);
5997                                                                 strcpy(servers[j]->name,servername);
5998                                                                 strcpy(servers[j]->description,serverdesc);
5999                                                                 servers[j]->internal_port = udp_port;
6000                                                                 // create a server record for this server
6001                                                                 snprintf(response,10240,"O %d",MyKey);
6002                                                                 serv->SendPacket(response,udp_host,udp_port,0);
6003                                                                 return;
6004                                                         }
6005                                                 }
6006                                                 WriteOpers("Internal error connecting to %s, failed to create server record!",servername);
6007                                                 return;
6008                                         }
6009                                         else {
6010                                                 log(DEBUG,"Port numbers '%d' and '%d' don't match",LinkPort,udp_port);
6011                                         }
6012                                 }
6013                                 else {
6014                                         log(DEBUG,"IP Addresses '%s' and '%s' don't match",Link_IPAddr,udp_host);
6015                                 }
6016                         }
6017                         else {
6018                                 log(DEBUG,"Server names '%s' and '%s' don't match",Link_ServerName,servername);
6019                         }
6020                 }
6021                 serv->SendPacket("E :Access is denied (no matching link block)",udp_host,udp_port,0);
6022                 WriteOpers("CONNECT from %s denied, no matching link block",servername);
6023                 return;
6024         }
6025         else
6026         if (token == 'O') {
6027                 // if this is received, this means the server-ip that sent it said "OK" to credentials.
6028                 // only when a server says this do we exchange keys. The server MUST have an entry in the servers
6029                 // array, which is only added by an 'S' packet or BeginLink().
6030                 for (int i = 0; i < 255; i++) {
6031                         if (servers[i] != NULL) {
6032                                 if (!strcasecmp(servers[i]->internal_addr,udp_host)) {
6033                                         servers[i]->key = atoi(params);
6034                                         log(DEBUG,"Key for this server is now %d",servers[i]->key);
6035                                         DoSync(serv,udp_host,udp_port,MyKey);
6036                                         return;
6037                                 }
6038                         }
6039                 }
6040                 WriteOpers("\2WARNING!\2 Server ip %s attempted a key exchange, but is not in the authentication state! Possible intrusion attempt!",udp_host);
6041         }
6042         else
6043         if (token == 's') {
6044                 // S test.chatspike.net password :ChatSpike InspIRCd test server
6045                 char* servername = strtok(params," ");
6046                 char* password = strtok(NULL," ");
6047                 char* serverdesc = finalparam+2;
6048
6049                 // TODO: we should do a check here to ensure that this server is one we recently initiated a
6050                 // link with, and didnt hear an 's' or 'E' back from yet (these are the only two valid responses
6051                 // to an 'S' command. If we didn't recently send an 'S' to this server, theyre trying to spoof
6052                 // a connect, so put out an oper alert!
6053
6054
6055
6056
6057                 // for now, just accept all, we'll fix that later.
6058                 WriteOpers("%s accepted our link credentials ",servername);
6059
6060                 char Link_ServerName[1024];
6061                 char Link_IPAddr[1024];
6062                 char Link_Port[1024];
6063                 char Link_Pass[1024];
6064                 char Link_SendPass[1024];
6065                 int LinkPort = 0;
6066
6067                 // search for a corresponding <link> block in the config files
6068                 for (int i = 0; i < ConfValueEnum("link",&config_f); i++)
6069                 {
6070                         ConfValue("link","name",i,Link_ServerName,&config_f);
6071                         ConfValue("link","ipaddr",i,Link_IPAddr,&config_f);
6072                         ConfValue("link","port",i,Link_Port,&config_f);
6073                         ConfValue("link","recvpass",i,Link_Pass,&config_f);
6074                         ConfValue("link","sendpass",i,Link_SendPass,&config_f);
6075                         log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
6076                         LinkPort = atoi(Link_Port);
6077                         if (!strcasecmp(Link_ServerName,servername)) {
6078                                 if (!strcasecmp(Link_IPAddr,udp_host)) {
6079                                         if (LinkPort == udp_port) {
6080                                                 // matching link at this end too, we're all done!
6081                                                 // at this point we must begin key exchange and insert this
6082                                                 // server into our 'active' table.
6083                                                 for (int j = 0; j < 255; j++) {
6084                                                         if (servers[j] != NULL) {
6085                                                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
6086                                                                         strcpy(servers[j]->description,serverdesc);
6087                                                                         WriteOpers("Server %s authenticated, exchanging server keys...",servername);
6088                                                                         snprintf(response,10240,"O %d",MyKey);
6089                                                                         serv->SendPacket(response,udp_host,udp_port,0);
6090                                                                         return;
6091                                                                 }
6092                                                         }
6093                                                 }
6094                                                 WriteOpers("\2WARNING!\2 %s sent us an authentication packet but we are not authenticating with this server right noe! Possible intrusion attempt!",udp_host);
6095                                                 return;
6096
6097                                         }
6098                                         else {
6099                                                 log(DEBUG,"Port numbers '%d' and '%d' don't match",LinkPort,udp_port);
6100                                         }
6101                                 }
6102                                 else {
6103                                         log(DEBUG,"IP Addresses '%s' and '%s' don't match",Link_IPAddr,udp_host);
6104                                 }
6105                         }
6106                         else {
6107                                 log(DEBUG,"Server names '%s' and '%s' don't match",Link_ServerName,servername);
6108                         }
6109                 }
6110                 serv->SendPacket("E :Access is denied (no matching link block)",udp_host,udp_port,0);
6111                 WriteOpers("CONNECT from %s denied, no matching link block",servername);
6112                 return;
6113         }
6114         else
6115         if (token == 'E') {
6116                 char* error_message = finalparam+2;
6117                 WriteOpers("ERROR from %s: %s",udp_host,error_message);
6118                 // remove this server from any lists
6119                 for (int j = 0; j < 255; j++) {
6120                         if (servers[j] != NULL) {
6121                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
6122                                         delete servers[j];
6123                                         return;
6124                                 }
6125                         }
6126                 }
6127                 return;
6128         }
6129         else {
6130
6131                 serverrec* source_server = NULL;
6132
6133                 for (int j = 0; j < 255; j++) {
6134                         if (servers[j] != NULL) {
6135                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
6136                                         if (servers[j]->key == theirkey) {
6137                                                 // found a valid key for this server, can process restricted stuff here
6138                                                 process_restricted_commands(token,params,servers[j],serv,udp_host,udp_port);
6139                                                 return;
6140                                         }
6141                                 }
6142                         }
6143                 }
6144
6145                 log(DEBUG,"Unrecognised token or unauthenticated host in datagram from %s:%d: %c",udp_host,udp_port,token);
6146         }
6147 }
6148
6149 int reap_counter = 0;
6150
6151 int InspIRCd(void)
6152 {
6153         struct sockaddr_in client, server;
6154         char addrs[MAXBUF][255];
6155         int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
6156         socklen_t length;
6157         int count = 0, scanDetectTrigger = TRUE, showBanner = FALSE;
6158         int selectResult = 0, selectResult2 = 0;
6159         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
6160         char resolvedHost[MAXBUF];
6161         fd_set selectFds;
6162         struct timeval tv;
6163
6164         log_file = fopen("ircd.log","a+");
6165         if (!log_file)
6166         {
6167                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
6168                 Exit(ERROR);
6169         }
6170
6171         log(DEBUG,"InspIRCd: startup: begin");
6172         log(DEBUG,"$Id$");
6173         if (geteuid() == 0)
6174         {
6175                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
6176                 Exit(ERROR);
6177                 log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
6178         }
6179         SetupCommandTable();
6180         log(DEBUG,"InspIRCd: startup: default command table set up");
6181
6182         ReadConfig();
6183         if (strcmp(DieValue,""))
6184         {
6185                 printf("WARNING: %s\n\n",DieValue);
6186                 exit(0);
6187         }
6188         log(DEBUG,"InspIRCd: startup: read config");
6189
6190         int count2 = 0, count3 = 0;
6191
6192         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
6193         {
6194                 ConfValue("bind","port",count,configToken,&config_f);
6195                 ConfValue("bind","address",count,Addr,&config_f);
6196                 ConfValue("bind","type",count,Type,&config_f);
6197                 if (!strcmp(Type,"servers"))
6198                 {
6199                         char Default[MAXBUF];
6200                         strcpy(Default,"no");
6201                         ConfValue("bind","default",count,Default,&config_f);
6202                         if (strchr(Default,'y'))
6203                         {
6204                                 defaultRoute = count3;
6205                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
6206                         }
6207                         me[count3] = new serverrec(ServerName,100L,false);
6208                         me[count3]->CreateListener(Addr,atoi(configToken));
6209                         count3++;
6210                 }
6211                 else
6212                 {
6213                         ports[count2] = atoi(configToken);
6214                         strcpy(addrs[count2],Addr);
6215                         count2++;
6216                 }
6217                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
6218         }
6219         portCount = count2;
6220         UDPportCount = count3;
6221
6222         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
6223
6224         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
6225
6226         printf("\n");
6227
6228         /* BugFix By Craig! :p */
6229         count = 0;
6230         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
6231         {
6232                 char modfile[MAXBUF];
6233                 ConfValue("module","name",count2,configToken,&config_f);
6234                 sprintf(modfile,"%s/%s",MOD_PATH,configToken,&config_f);
6235                 printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
6236                 log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
6237                 /* If The File Doesnt exist, Trying to load it
6238                  * Will Segfault the IRCd.. So, check to see if
6239                  * it Exists, Before Proceeding. */
6240                 if (FileExists(modfile))
6241                 {
6242                         factory[count] = new ircd_module(modfile);
6243                         if (factory[count]->LastError())
6244                         {
6245                                 log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
6246                                 sprintf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
6247                                 Exit(ERROR);
6248                         }
6249                         if (factory[count]->factory)
6250                         {
6251                                 modules[count] = factory[count]->factory->CreateModule();
6252                                 /* save the module and the module's classfactory, if
6253                                  * this isnt done, random crashes can occur :/ */
6254                                 module_names.push_back(modfile);
6255                         }
6256                         else
6257                         {
6258                                 log(DEBUG,"Unable to load %s",modfile);
6259                                 sprintf("Unable to load %s\nExiting...\n",modfile);
6260                                 Exit(ERROR);
6261                         }
6262                         /* Increase the Count */
6263                         count++;
6264                 }
6265                 else
6266                 {
6267                         log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
6268                         printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
6269                 }
6270         }
6271         MODCOUNT = count - 1;
6272         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
6273
6274         printf("\nInspIRCd is now running!\n");
6275
6276         startup_time = time(NULL);
6277
6278         if (nofork)
6279         {
6280                 log(VERBOSE,"Not forking as -nofork was specified");
6281         }
6282         else
6283         {
6284                 if (DaemonSeed() == ERROR)
6285                 {
6286                         log(DEBUG,"InspIRCd: startup: can't daemonise");
6287                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
6288                         Exit(ERROR);
6289                 }
6290         }
6291
6292
6293         /* setup select call */
6294         FD_ZERO(&selectFds);
6295         log(DEBUG,"InspIRCd: startup: zero selects");
6296         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
6297
6298         for (count = 0; count < portCount; count++)
6299         {
6300                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
6301                 {
6302                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
6303                         return(ERROR);
6304                 }
6305                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
6306                 {
6307                         log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
6308                 }
6309                 else    /* well we at least bound to one socket so we'll continue */
6310                 {
6311                         boundPortCount++;
6312                 }
6313         }
6314
6315         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
6316
6317         /* if we didn't bind to anything then abort */
6318         if (boundPortCount == 0)
6319         {
6320                 log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
6321                 return (ERROR);
6322         }
6323
6324         length = sizeof (client);
6325         int flip_flop = 0, udp_port = 0;
6326         char udp_msg[MAXBUF], udp_host[MAXBUF];
6327
6328         /* main loop, this never returns */
6329         for (;;)
6330         {
6331
6332                 fd_set sfd;
6333                 struct timeval tval;
6334                 FD_ZERO(&sfd);
6335
6336                 user_hash::iterator count2 = clientlist.begin();
6337
6338                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
6339                 // them in a list, then reap the list every second or so.
6340                 if (reap_counter>5000)
6341                 {
6342                         if (fd_reap.size() > 0)
6343                         {
6344                                 for( int n = 0; n < fd_reap.size(); n++)
6345                                 {
6346                                         Blocking(fd_reap[n]);
6347                                         close(fd_reap[n]);
6348                                         NonBlocking(fd_reap[n]);
6349                                 }
6350                         }
6351                         fd_reap.clear();
6352                         reap_counter=0;
6353                 }
6354
6355
6356                 for (int x = 0; x != UDPportCount; x++)
6357                 {
6358                         long theirkey = 0;
6359                         if (me[x]->RecvPacket(udp_msg, udp_host, udp_port, theirkey))
6360                         {
6361                                 if (strlen(udp_msg)<1) {
6362                                 log(DEBUG,"Invalid datagram from %s:%d:%d [route%d]",udp_host,udp_port,me[x]->port,x);
6363                         }
6364                         else
6365                         {
6366                                 FOREACH_MOD OnPacketReceive(udp_msg);
6367                                 // Packets must go back via the route they arrived on :)
6368                                 handle_link_packet(theirkey, udp_msg, udp_host, udp_port, me[x]);
6369                                 // link packets can manipulate the usertable so beware of
6370                                 // any loops here watching the user or channels hash
6371                                 log(DEBUG,"Sync: exit 3");
6372                                 goto label;
6373                         }
6374                 }
6375         }
6376
6377
6378         while (count2 != clientlist.end())
6379         {
6380                 char data[10240];
6381                 tval.tv_usec = tval.tv_sec = 0;
6382                 FD_ZERO(&sfd);
6383                 int total_in_this_set = 0;
6384
6385                 user_hash::iterator xcount = count2;
6386                 user_hash::iterator endingiter = count2;
6387
6388                 if (!count2->second) break;
6389
6390                 if (count2->second)
6391                 if (count2->second->fd != 0)
6392                 {
6393                         // assemble up to 64 sockets into an fd_set
6394                         // to implement a pooling mechanism.
6395                         //
6396                         // This should be up to 64x faster than the
6397                         // old implementation.
6398                         while (total_in_this_set < 64)
6399                         {
6400                                 if (count2 != clientlist.end())
6401                                 {
6402                                         // we don't check the state of remote users.
6403                                         if (count2->second->fd > 0)
6404                                         {
6405                                                 FD_SET (count2->second->fd, &sfd);
6406
6407                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
6408                                                 // their connection class.
6409                                                 if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
6410                                                 {
6411                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
6412                                                         kill_link(count2->second,"Registration timeout");
6413                                                         goto label;
6414                                                 }
6415                                                 if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
6416                                                 {
6417                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
6418                                                         {
6419                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
6420                                                                 kill_link(count2->second,"Ping timeout");
6421                                                                 goto label;
6422                                                         }
6423                                                         Write(count2->second->fd,"PING :%s",ServerName);
6424                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
6425                                                         count2->second->lastping = 0;
6426                                                         count2->second->nping = time(NULL)+120;
6427                                                 }
6428                                         }
6429                                         count2++;
6430                                         total_in_this_set++;
6431                                 }
6432                                 else break;
6433                         }
6434
6435                         endingiter = count2;
6436                         count2 = xcount; // roll back to where we were
6437
6438                         int v = 0;
6439
6440                         tval.tv_usec = 0;
6441                         tval.tv_sec = 0;
6442                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
6443
6444                         // now loop through all of the items in this pool if any are waiting
6445                         //if (selectResult2 > 0)
6446                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
6447                         {
6448                                 result = EAGAIN;
6449                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
6450                                 {
6451                                         log(DEBUG,"Reading fd %d",count2a->second->fd);
6452                                         memset(data, 0, 10240);
6453                                         result = read(count2a->second->fd, data, 10240);
6454
6455                                         if (result)
6456                                         {
6457                                                 log(DEBUG,"Read %d characters from socket",result);
6458                                                 userrec* current = count2a->second;
6459                                                 int currfd = current->fd;
6460                                                 char* l = strtok(data,"\n");
6461                                                 int floodlines = 0;
6462                                                 while (l)
6463                                                 {
6464                                                         floodlines++;
6465                                                         if ((floodlines > current->flood) && (current->flood != 0))
6466                                                         {
6467                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
6468                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
6469                                                                 kill_link(current,"Excess flood");
6470                                                                 goto label;
6471                                                         }
6472                                                         char sanitized[NetBufferSize];
6473                                                         memset(sanitized, 0, NetBufferSize);
6474                                                         int ptt = 0;
6475                                                         for (int pt = 0; pt < strlen(l); pt++)
6476                                                         {
6477                                                                 if (l[pt] != '\r')
6478                                                                 {
6479                                                                         sanitized[ptt++] = l[pt];
6480                                                                 }
6481                                                         }
6482                                                         sanitized[ptt] = '\0';
6483                                                         if (strlen(sanitized))
6484                                                         {
6485
6486
6487                                                                 // we're gonna re-scan to check if the nick is gone, after every
6488                                                                 // command - if it has, we're gonna bail
6489                                                                 bool find_again = false;
6490                                                                 process_buffer(sanitized,current);
6491
6492                                                                 // look for the user's record in case it's changed
6493                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
6494                                                                 {
6495                                                                         if (c2->second->fd == currfd)
6496                                                                         {
6497                                                                                 // found again, update pointer
6498                                                                                 current == c2->second;
6499                                                                                 find_again = true;
6500                                                                                 break;
6501                                                                         }
6502                                                                 }
6503                                                                 if (!find_again)
6504                                                                         goto label;
6505
6506                                                         }
6507                                                         l = strtok(NULL,"\n");
6508                                                 }
6509                                                 goto label;
6510                                         }
6511
6512                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
6513                                         {
6514                                                 log(DEBUG,"killing: %s",count2a->second->nick);
6515                                                 kill_link(count2a->second,strerror(errno));
6516                                                 goto label;
6517                                         }
6518                                 }
6519                                 // result EAGAIN means nothing read
6520                                 if (result == EAGAIN)
6521                                 {
6522                                 }
6523                                 else
6524                                 if (result == 0)
6525                                 {
6526                                         if (count2->second)
6527                                         {
6528                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
6529                                                 kill_link(count2a->second,"Client exited");
6530                                                 // must bail here? kill_link removes the hash, corrupting the iterator
6531                                                 log(DEBUG,"Bailing from client exit");
6532                                                 goto label;
6533                                         }
6534                                 }
6535                                 else if (result > 0)
6536                                 {
6537                                 }
6538                         }
6539                 }
6540                 for (int q = 0; q < total_in_this_set; q++)
6541                 {
6542                         // there is no iterator += operator :(
6543                         //if (count2 != clientlist.end())
6544                         //{
6545                                 count2++;
6546                         //}
6547                 }
6548         }
6549
6550         // set up select call
6551         for (count = 0; count < boundPortCount; count++)
6552         {
6553                 FD_SET (openSockfd[count], &selectFds);
6554         }
6555
6556         /* added timeout! select was waiting forever... wank... :/ */
6557         tv.tv_usec = 0;
6558
6559         flip_flop++;
6560         reap_counter++;
6561         if (flip_flop > 20)
6562         {
6563                 tv.tv_usec = 1;
6564                 flip_flop = 0;
6565         }
6566
6567         tv.tv_sec = 0;
6568         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
6569
6570         /* select is reporting a waiting socket. Poll them all to find out which */
6571         if (selectResult > 0)
6572         {
6573                 char target[MAXBUF], resolved[MAXBUF];
6574                 for (count = 0; count < boundPortCount; count++)
6575                 {
6576                         if (FD_ISSET (openSockfd[count], &selectFds))
6577                         {
6578                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
6579
6580                                 address_cache::iterator iter = IP.find(client.sin_addr);
6581                                 bool iscached = false;
6582                                 if (iter == IP.end())
6583                                 {
6584                                         /* ip isn't in cache, add it */
6585                                         strncpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
6586                                         if(CleanAndResolve(resolved, target) != TRUE)
6587                                         {
6588                                                 strncpy(resolved,target,MAXBUF);
6589                                         }
6590                                         /* hostname now in 'target' */
6591                                         IP[client.sin_addr] = new string(resolved);
6592                                         /* hostname in cache */
6593                                 }
6594                                 else
6595                                 {
6596                                         /* found ip (cached) */
6597                                         strncpy(resolved, iter->second->c_str(), MAXBUF);
6598                                         iscached = true;
6599                                 }
6600
6601                                 if (incomingSockfd < 0)
6602                                 {
6603                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
6604                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
6605                                 }
6606                                 else
6607                                 {
6608                                         AddClient(incomingSockfd, resolved, ports[count], iscached);
6609                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
6610                                 }
6611                                 goto label;
6612                         }
6613                 }
6614         }
6615         label:
6616         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
6617 }
6618 /* not reached */
6619 close (incomingSockfd);
6620 }
6621