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