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