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],timeout[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         ConfValue("connect","timeout",i,timeout);
 412         if (strcmp(Value,""))
 413         {
 414                 strcpy(c.host,Value);
 415                 c.type = CC_ALLOW;
 416                 strcpy(Value,"");
 417                 ConfValue("connect","password",i,Value);
 418                 strcpy(c.pass,Value);
 419                 c.registration_timeout = 90; // default is 2 minutes
 420                 if (atoi(timeout)>0)
 421                 {
 422                         c.registration_timeout = atoi(timeout);
 423                 }
 424                 Classes.push_back(c);
 425                 log(DEBUG,"Read connect class type ALLOW, host=%s password=%s",c.host,c.pass);
 426         }
 427         else
 428         {
 429                 ConfValue("connect","deny",i,Value);
 430                 strcpy(c.host,Value);
 431                 c.type = CC_DENY;
 432                 Classes.push_back(c);
 433                 log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 434         }
 435
 436   }
 437 }
 438
 439 void Blocking(int s)
 440 {
 441   int flags;
 442   log(DEBUG,"Blocking: %d",s);
 443   flags = fcntl(s, F_GETFL, 0);
 444   fcntl(s, F_SETFL, flags ^ O_NONBLOCK);
 445 }
 446
 447 void NonBlocking(int s)
 448 {
 449   int flags;
 450   log(DEBUG,"NonBlocking: %d",s);
 451   flags = fcntl(s, F_GETFL, 0);
 452   fcntl(s, F_SETFL, flags | O_NONBLOCK);
 453 }
 454
 455
 456 int CleanAndResolve (char *resolvedHost, const char *unresolvedHost)
 457 {
 458   struct hostent *hostPtr = NULL;
 459   struct in_addr addr;
 460
 461   memset (resolvedHost, '\0',MAXBUF);
 462   if(unresolvedHost == NULL)
 463         return(ERROR);
 464   if ((inet_aton(unresolvedHost,&addr)) == 0)
 465         return(ERROR);
 466   hostPtr = gethostbyaddr ((char *)&addr.s_addr,sizeof(addr.s_addr),AF_INET);
 467   if (hostPtr != NULL)
 468         snprintf(resolvedHost,MAXBUF,"%s",hostPtr->h_name);
 469   else
 470         snprintf(resolvedHost,MAXBUF,"%s",unresolvedHost);
 471   return (TRUE);
 472 }
 473
 474 /* write formatted text to a socket, in same format as printf */
 475
 476 void Write(int sock,char *text, ...)
 477 {
 478   if (!text)
 479   {
 480         log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 481         return;
 482   }
 483   char textbuffer[MAXBUF];
 484   va_list argsPtr;
 485   char tb[MAXBUF];
 486
 487   va_start (argsPtr, text);
 488   vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 489   va_end(argsPtr);
 490   sprintf(tb,"%s\r\n",textbuffer);
 491   chop(tb);
 492   write(sock,tb,strlen(tb));
 493   update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 494 }
 495
 496 /* write a server formatted numeric response to a single socket */
 497
 498 void WriteServ(int sock, char* text, ...)
 499 {
 500   if (!text)
 501   {
 502         log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 503         return;
 504   }
 505   char textbuffer[MAXBUF],tb[MAXBUF];
 506   va_list argsPtr;
 507   va_start (argsPtr, text);
 508
 509   vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 510   va_end(argsPtr);
 511   sprintf(tb,":%s %s\r\n",ServerName,textbuffer);
 512   chop(tb);
 513   write(sock,tb,strlen(tb));
 514   update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 515 }
 516
 517 /* write text from an originating user to originating user */
 518
 519 void WriteFrom(int sock, userrec *user,char* text, ...)
 520 {
 521   if ((!text) || (!user))
 522   {
 523         log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 524         return;
 525   }
 526   char textbuffer[MAXBUF],tb[MAXBUF];
 527   va_list argsPtr;
 528   va_start (argsPtr, text);
 529
 530   vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 531   va_end(argsPtr);
 532   sprintf(tb,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 533   chop(tb);
 534   write(sock,tb,strlen(tb));
 535   update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 536 }
 537
 538 /* write text to an destination user from a source user (e.g. user privmsg) */
 539
 540 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 541 {
 542         if ((!source) || (!dest) || (!data))
 543         {
 544                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 545                 return;
 546         }
 547         char textbuffer[MAXBUF],tb[MAXBUF];
 548         va_list argsPtr;
 549         va_start (argsPtr, data);
 550         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 551         va_end(argsPtr);
 552         chop(tb);
 553         WriteFrom(dest->fd,source,"%s",textbuffer);
 554 }
 555
 556 /* write formatted text from a source user to all users on a channel
 557  * including the sender (NOT for privmsg, notice etc!) */
 558
 559 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 560 {
 561         if ((!Ptr) || (!user) || (!text))
 562         {
 563                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 564                 return;
 565         }
 566         char textbuffer[MAXBUF];
 567         va_list argsPtr;
 568         va_start (argsPtr, text);
 569         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 570         va_end(argsPtr);
 571         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 572         {
 573                 if (has_channel(i->second,Ptr))
 574                 {
 575                         WriteTo(user,i->second,"%s",textbuffer);
 576                 }
 577         }
 578 }
 579
 580 void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
 581 {
 582         if ((!Ptr) || (!user) || (!text))
 583         {
 584                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 585                 return;
 586         }
 587         char textbuffer[MAXBUF];
 588         va_list argsPtr;
 589         va_start (argsPtr, text);
 590         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 591         va_end(argsPtr);
 592         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 593         {
 594                 if (i->second)
 595                 {
 596                         if (has_channel(i->second,Ptr))
 597                         {
 598                                 WriteServ(i->second->fd,"%s",textbuffer);
 599                         }
 600                 }
 601         }
 602 }
 603
 604
 605 /* write formatted text from a source user to all users on a channel except
 606  * for the sender (for privmsg etc) */
 607
 608 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 609 {
 610         if ((!Ptr) || (!user) || (!text))
 611         {
 612                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 613                 return;
 614         }
 615         char textbuffer[MAXBUF];
 616         va_list argsPtr;
 617         va_start (argsPtr, text);
 618         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 619         va_end(argsPtr);
 620
 621         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 622         {
 623                 if (i->second)
 624                 {
 625                         if (has_channel(i->second,Ptr) && (user != i->second))
 626                         {
 627                                 WriteTo(user,i->second,"%s",textbuffer);
 628                         }
 629                 }
 630         }
 631 }
 632
 633 int c_count(userrec* u)
 634 {
 635         int z = 0;
 636         for (int i =0; i != MAXCHANS; i++)
 637                 if (u->chans[i].channel != NULL)
 638                         z++;
 639         return z;
 640
 641 }
 642
 643 /* return 0 or 1 depending if users u and u2 share one or more common channels
 644  * (used by QUIT, NICK etc which arent channel specific notices) */
 645
 646 int common_channels(userrec *u, userrec *u2)
 647 {
 648         int i = 0;
 649         int z = 0;
 650
 651         if ((!u) || (!u2))
 652         {
 653                 log(DEFAULT,"*** BUG *** common_channels was given an invalid parameter");
 654                 return 0;
 655         }
 656         for (i = 0; i != MAXCHANS; i++)
 657         {
 658                 for (z = 0; z != MAXCHANS; z++)
 659                 {
 660                         if ((u->chans[i].channel != NULL) && (u2->chans[z].channel != NULL))
 661                         {
 662                                 if ((u->chans[i].channel == u2->chans[z].channel) && (u->chans[i].channel) && (u2->chans[z].channel) && (u->registered == 7) && (u2->registered == 7))
 663                                 {
 664                                         if ((c_count(u)) && (c_count(u2)))
 665                                         {
 666                                                 return 1;
 667                                         }
 668                                 }
 669                         }
 670                 }
 671         }
 672         return 0;
 673 }
 674
 675 /* write a formatted string to all users who share at least one common
 676  * channel, including the source user e.g. for use in NICK */
 677
 678 void WriteCommon(userrec *u, char* text, ...)
 679 {
 680         if (!u)
 681         {
 682                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 683                 return;
 684         }
 685
 686         if (u->registered != 7) {
 687                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 688                 return;
 689         }
 690
 691         char textbuffer[MAXBUF];
 692         va_list argsPtr;
 693         va_start (argsPtr, text);
 694         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 695         va_end(argsPtr);
 696
 697         WriteFrom(u->fd,u,"%s",textbuffer);
 698
 699         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 700         {
 701                 if (i->second)
 702                 {
 703                         if (common_channels(u,i->second) && (i->second != u))
 704                         {
 705                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 706                         }
 707                 }
 708         }
 709 }
 710
 711 /* write a formatted string to all users who share at least one common
 712  * channel, NOT including the source user e.g. for use in QUIT */
 713
 714 void WriteCommonExcept(userrec *u, char* text, ...)
 715 {
 716         if (!u)
 717         {
 718                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 719                 return;
 720         }
 721
 722         if (u->registered != 7) {
 723                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 724                 return;
 725         }
 726
 727         char textbuffer[MAXBUF];
 728         va_list argsPtr;
 729         va_start (argsPtr, text);
 730         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 731         va_end(argsPtr);
 732
 733         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 734         {
 735                 if (i->second)
 736                 {
 737                         if ((common_channels(u,i->second)) && (u != i->second))
 738                         {
 739                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 740                         }
 741                 }
 742         }
 743 }
 744
 745 void WriteOpers(char* text, ...)
 746 {
 747         if (!text)
 748         {
 749                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 750                 return;
 751         }
 752
 753         char textbuffer[MAXBUF];
 754         va_list argsPtr;
 755         va_start (argsPtr, text);
 756         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 757         va_end(argsPtr);
 758
 759         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 760         {
 761                 if (i->second)
 762                 {
 763                         if (strchr(i->second->modes,'o'))
 764                         {
 765                                 if (strchr(i->second->modes,'s'))
 766                                 {
 767                                         // send server notices to all with +s
 768                                         // (TODO: needs SNOMASKs)
 769                                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 770                                 }
 771                         }
 772                 }
 773         }
 774 }
 775
 776 bool hasumode(userrec* user, char mode)
 777 {
 778         if (user)
 779         {
 780                 return (strchr(user->modes,mode)>0);
 781         }
 782         else return false;
 783 }
 784
 785 void WriteMode(const char* modes, int flags, const char* text, ...)
 786 {
 787         if ((!text) || (!modes) || (!flags))
 788         {
 789                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 790                 return;
 791         }
 792
 793         char textbuffer[MAXBUF];
 794         va_list argsPtr;
 795         va_start (argsPtr, text);
 796         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 797         va_end(argsPtr);
 798
 799         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 800         {
 801                 if (i->second)
 802                 {
 803                         bool send_to_user = false;
 804
 805                         if (flags == WM_AND)
 806                         {
 807                                 send_to_user = true;
 808                                 for (int n = 0; n < strlen(modes); n++)
 809                                 {
 810                                         if (!hasumode(i->second,modes[n]))
 811                                         {
 812                                                 send_to_user = false;
 813                                                 break;
 814                                         }
 815                                 }
 816                         }
 817                         else if (flags == WM_OR)
 818                         {
 819                                 send_to_user = false;
 820                                 for (int n = 0; n < strlen(modes); n++)
 821                                 {
 822                                         if (hasumode(i->second,modes[n]))
 823                                         {
 824                                                 send_to_user = true;
 825                                                 break;
 826                                         }
 827                                 }
 828                         }
 829
 830                         if (send_to_user)
 831                         {
 832                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 833                         }
 834                 }
 835         }
 836 }
 837
 838 void WriteWallOps(userrec *source, char* text, ...)
 839 {
 840         if ((!text) || (!source))
 841         {
 842                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 843                 return;
 844         }
 845
 846         int i = 0;
 847         char textbuffer[MAXBUF];
 848         va_list argsPtr;
 849         va_start (argsPtr, text);
 850         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 851         va_end(argsPtr);
 852
 853         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 854         {
 855                 if (i->second)
 856                 {
 857                         if (strchr(i->second->modes,'w'))
 858                         {
 859                                 WriteTo(source,i->second,"WALLOPS %s",textbuffer);
 860                         }
 861                 }
 862         }
 863 }
 864
 865 /* convert a string to lowercase. Note following special circumstances
 866  * taken from RFC 1459. Many "official" server branches still hold to this
 867  * rule so i will too;
 868  *
 869  *  Because of IRC's scandanavian origin, the characters {}| are
 870  *  considered to be the lower case equivalents of the characters []\,
 871  *  respectively. This is a critical issue when determining the
 872  *  equivalence of two nicknames.
 873  */
 874
 875 void strlower(char *n)
 876 {
 877         if (!n)
 878         {
 879                 return;
 880         }
 881         for (int i = 0; i != strlen(n); i++)
 882         {
 883                 n[i] = tolower(n[i]);
 884                 if (n[i] == '[')
 885                         n[i] = '{';
 886                 if (n[i] == ']')
 887                         n[i] = '}';
 888                 if (n[i] == '\\')
 889                         n[i] = '|';
 890         }
 891 }
 892
 893 /* verify that a user's ident and nickname is valid */
 894
 895 int isident(const char* n)
 896 {
 897         int i = 0;
 898         char v[MAXBUF];
 899         if (!n)
 900
 901         {
 902                 return 0;
 903         }
 904         if (!strcmp(n,""))
 905         {
 906                 return 0;
 907         }
 908         for (i = 0; i != strlen(n); i++)
 909         {
 910                 if ((n[i] < 33) || (n[i] > 125))
 911                 {
 912                         return 0;
 913                 }
 914                 /* can't occur ANYWHERE in an Ident! */
 915                 if (strchr("<>,./?:;@'~#=+()*&%$£ \"!",n[i]))
 916                 {
 917                         return 0;
 918                 }
 919         }
 920         return 1;
 921 }
 922
 923
 924 int isnick(const char* n)
 925 {
 926         int i = 0;
 927         char v[MAXBUF];
 928         if (!n)
 929         {
 930                 return 0;
 931         }
 932         if (!strcmp(n,""))
 933         {
 934                 return 0;
 935         }
 936         if (strlen(n) > NICKMAX-1)
 937         {
 938                 return 0;
 939         }
 940         for (i = 0; i != strlen(n); i++)
 941         {
 942                 if ((n[i] < 33) || (n[i] > 125))
 943                 {
 944                         return 0;
 945                 }
 946                 /* can't occur ANYWHERE in a nickname! */
 947                 if (strchr("<>,./?:;@'~#=+()*&%$£ \"!",n[i]))
 948                 {
 949                         return 0;
 950                 }
 951                 /* can't occur as the first char of a nickname... */
 952                 if ((strchr("0123456789",n[i])) && (!i))
 953                 {
 954                         return 0;
 955                 }
 956         }
 957         return 1;
 958 }
 959
 960 /* Find a user record by nickname and return a pointer to it */
 961
 962 userrec* Find(string nick)
 963 {
 964         user_hash::iterator iter = clientlist.find(nick);
 965
 966         if (iter == clientlist.end())
 967                 /* Couldn't find it */
 968                 return NULL;
 969
 970         return iter->second;
 971 }
 972
 973 void update_stats_l(int fd,int data_out) /* add one line-out to stats L for this fd */
 974 {
 975         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 976         {
 977                 if (i->second)
 978                 {
 979                         if (i->second->fd == fd)
 980                         {
 981                                 i->second->bytes_out+=data_out;
 982                                 i->second->cmds_out++;
 983                         }
 984                 }
 985         }
 986 }
 987
 988
 989 /* find a channel record by channel name and return a pointer to it */
 990
 991 chanrec* FindChan(const char* chan)
 992 {
 993         if (!chan)
 994         {
 995                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
 996                 return NULL;
 997         }
 998
 999         chan_hash::iterator iter = chanlist.find(chan);
1000
1001         if (iter == chanlist.end())
1002                 /* Couldn't find it */
1003                 return NULL;
1004
1005         return iter->second;
1006 }
1007
1008
1009 void purge_empty_chans(void)
1010 {
1011         int go_again = 1, purge = 0;
1012
1013         while (go_again)
1014         {
1015                 go_again = 0;
1016                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1017                 {
1018                         if (i->second) {
1019                                 if (!usercount(i->second))
1020                                 {
1021                                         /* kill the record */
1022                                         if (i != chanlist.end())
1023                                         {
1024                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1025                                                 delete i->second;
1026                                                 chanlist.erase(i);
1027                                                 go_again = 1;
1028                                                 purge++;
1029                                                 break;
1030                                         }
1031                                 }
1032                                 else
1033                                 {
1034                                         log(DEBUG,"skipped purge for %s",i->second->name);
1035                                 }
1036                         }
1037                 }
1038         }
1039         log(DEBUG,"completed channel purge, killed %d",purge);
1040 }
1041
1042 /* returns the status character for a given user on a channel, e.g. @ for op,
1043  * % for halfop etc. If the user has several modes set, the highest mode
1044  * the user has must be returned. */
1045
1046 char* cmode(userrec *user, chanrec *chan)
1047 {
1048         if ((!user) || (!chan))
1049         {
1050                 log(DEFAULT,"*** BUG *** cmode was given an invalid parameter");
1051                 return "";
1052         }
1053
1054         int i;
1055         for (i = 0; i != MAXCHANS; i++)
1056         {
1057                 if ((user->chans[i].channel == chan) && (chan != NULL))
1058                 {
1059                         if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
1060                         {
1061                                 return "@";
1062                         }
1063                         if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
1064                         {
1065                                 return "%";
1066                         }
1067                         if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
1068                         {
1069                                 return "+";
1070                         }
1071                         return "";
1072                 }
1073         }
1074 }
1075
1076 char scratch[MAXBUF];
1077 char sparam[MAXBUF];
1078
1079 char* chanmodes(chanrec *chan)
1080 {
1081         if (!chan)
1082         {
1083                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1084                 strcpy(scratch,"");
1085                 return scratch;
1086         }
1087
1088         strcpy(scratch,"");
1089         strcpy(sparam,"");
1090         if (chan->noexternal)
1091         {
1092                 strncat(scratch,"n",MAXMODES);
1093         }
1094         if (chan->topiclock)
1095         {
1096                 strncat(scratch,"t",MAXMODES);
1097         }
1098         if (strcmp(chan->key,""))
1099         {
1100                 strncat(scratch,"k",MAXMODES);
1101         }
1102         if (chan->limit)
1103         {
1104                 strncat(scratch,"l",MAXMODES);
1105         }
1106         if (chan->inviteonly)
1107         {
1108                 strncat(scratch,"i",MAXMODES);
1109         }
1110         if (chan->moderated)
1111         {
1112                 strncat(scratch,"m",MAXMODES);
1113         }
1114         if (chan->secret)
1115         {
1116                 strncat(scratch,"s",MAXMODES);
1117         }
1118         if (chan->c_private)
1119         {
1120                 strncat(scratch,"p",MAXMODES);
1121         }
1122         if (strcmp(chan->key,""))
1123         {
1124                 strncat(sparam,chan->key,MAXBUF);
1125         }
1126         if (chan->limit)
1127         {
1128                 char foo[24];
1129                 sprintf(foo," %d",chan->limit);
1130                 strncat(sparam,foo,MAXBUF);
1131         }
1132         if (strlen(chan->custom_modes))
1133         {
1134                 strncat(scratch,chan->custom_modes,MAXMODES);
1135                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1136                 {
1137                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1138                         if (extparam != "")
1139                         {
1140                                 strncat(sparam," ",MAXBUF);
1141                                 strncat(sparam,extparam.c_str(),MAXBUF);
1142                         }
1143                 }
1144         }
1145         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1146         strncat(scratch,sparam,MAXMODES);
1147         return scratch;
1148 }
1149
1150 /* returns the status value for a given user on a channel, e.g. STATUS_OP for
1151  * op, STATUS_VOICE for voice etc. If the user has several modes set, the
1152  * highest mode the user has must be returned. */
1153
1154 int cstatus(userrec *user, chanrec *chan)
1155 {
1156         if ((!chan) || (!user))
1157         {
1158                 log(DEFAULT,"*** BUG *** cstatus was given an invalid parameter");
1159                 return 0;
1160         }
1161
1162         int i;
1163         for (i = 0; i != MAXCHANS; i++)
1164         {
1165                 if ((user->chans[i].channel == chan) && (chan != NULL))
1166                 {
1167                         if ((user->chans[i].uc_modes & UCMODE_OP) > 0)
1168                         {
1169                                 return STATUS_OP;
1170                         }
1171                         if ((user->chans[i].uc_modes & UCMODE_HOP) > 0)
1172                         {
1173                                 return STATUS_HOP;
1174                         }
1175                         if ((user->chans[i].uc_modes & UCMODE_VOICE) > 0)
1176                         {
1177                                 return STATUS_VOICE;
1178                         }
1179                         return STATUS_NORMAL;
1180                 }
1181         }
1182 }
1183
1184
1185 /* compile a userlist of a channel into a string, each nick seperated by
1186  * spaces and op, voice etc status shown as @ and + */
1187
1188 void userlist(userrec *user,chanrec *c)
1189 {
1190         if ((!c) || (!user))
1191         {
1192                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1193                 return;
1194         }
1195
1196         sprintf(list,"353 %s = %s :", user->nick, c->name);
1197         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1198         {
1199                 if (has_channel(i->second,c))
1200                 {
1201                         if (isnick(i->second->nick))
1202                         {
1203                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1204                                 {
1205                                         /* user is +i, and source not on the channel, does not show
1206                                          * nick in NAMES list */
1207                                         continue;
1208                                 }
1209                                 strcat(list,cmode(i->second,c));
1210                                 strcat(list,i->second->nick);
1211                                 strcat(list," ");
1212                                 if (strlen(list)>(480-NICKMAX))
1213                                 {
1214                                         /* list overflowed into
1215                                          * multiple numerics */
1216                                         WriteServ(user->fd,list);
1217                                         sprintf(list,"353 %s = %s :", user->nick, c->name);
1218                                 }
1219                         }
1220                 }
1221         }
1222         /* if whats left in the list isnt empty, send it */
1223         if (list[strlen(list)-1] != ':')
1224         {
1225                 WriteServ(user->fd,list);
1226         }
1227 }
1228
1229 /* return a count of the users on a specific channel accounting for
1230  * invisible users who won't increase the count. e.g. for /LIST */
1231
1232 int usercount_i(chanrec *c)
1233 {
1234         int i = 0;
1235         int count = 0;
1236
1237         if (!c)
1238         {
1239                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1240                 return 0;
1241         }
1242
1243         strcpy(list,"");
1244         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1245         {
1246                 if (i->second)
1247                 {
1248                         if (has_channel(i->second,c))
1249                         {
1250                                 if (isnick(i->second->nick))
1251                                 {
1252                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1253                                         {
1254                                                 /* user is +i, and source not on the channel, does not show
1255                                                  * nick in NAMES list */
1256                                                 continue;
1257                                         }
1258                                         count++;
1259                                 }
1260                         }
1261                 }
1262         }
1263         log(DEBUG,"usercount_i: %s %d",c->name,count);
1264         return count;
1265 }
1266
1267
1268 int usercount(chanrec *c)
1269 {
1270         int i = 0;
1271         int count = 0;
1272
1273         if (!c)
1274         {
1275                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1276                 return 0;
1277         }
1278
1279         strcpy(list,"");
1280         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1281         {
1282                 if (i->second)
1283                 {
1284                         if (has_channel(i->second,c))
1285                         {
1286                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1287                                 {
1288                                         count++;
1289                                 }
1290                         }
1291                 }
1292         }
1293         log(DEBUG,"usercount: %s %d",c->name,count);
1294         return count;
1295 }
1296
1297
1298 /* add a channel to a user, creating the record for it if needed and linking
1299  * it to the user record */
1300
1301 chanrec* add_channel(userrec *user, char* cname, char* key)
1302 {
1303
1304         if ((!user) || (!cname))
1305         {
1306                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1307                 return 0;
1308         }
1309
1310         int i = 0;
1311         chanrec* Ptr;
1312         int created = 0;
1313
1314         // we MUST declare this wherever we use FOREACH_RESULT
1315         int MOD_RESULT = 0;
1316
1317         if ((!cname) || (!user))
1318         {
1319                 return NULL;
1320         }
1321         if (strlen(cname) > CHANMAX-1)
1322         {
1323                 cname[CHANMAX-1] = '\0';
1324         }
1325
1326         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1327
1328         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1329         {
1330                 return NULL; // already on the channel!
1331         }
1332
1333
1334         if (!FindChan(cname))
1335         {
1336                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1337                 if (MOD_RESULT) {
1338                         return NULL;
1339                 }
1340
1341                 /* create a new one */
1342                 log(DEBUG,"add_channel: creating: %s",cname);
1343                 {
1344                         chanlist[cname] = new chanrec();
1345
1346                         strcpy(chanlist[cname]->name, cname);
1347                         chanlist[cname]->topiclock = 1;
1348                         chanlist[cname]->noexternal = 1;
1349                         chanlist[cname]->created = time(NULL);
1350                         strcpy(chanlist[cname]->topic, "");
1351                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1352                         chanlist[cname]->topicset = 0;
1353                         Ptr = chanlist[cname];
1354                         log(DEBUG,"add_channel: created: %s",cname);
1355                         /* set created to 2 to indicate user
1356                          * is the first in the channel
1357                          * and should be given ops */
1358                         created = 2;
1359                 }
1360         }
1361         else
1362         {
1363                 /* channel exists, just fish out a pointer to its struct */
1364                 Ptr = FindChan(cname);
1365                 if (Ptr)
1366                 {
1367                         FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1368                         if (MOD_RESULT) {
1369                                 return NULL;
1370                         }
1371
1372                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1373                         if (strcmp(Ptr->key,""))
1374                         {
1375                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1376                                 if (!key)
1377                                 {
1378                                         log(DEBUG,"add_channel: no key given in JOIN");
1379                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1380                                         return NULL;
1381                                 }
1382                                 else
1383                                 {
1384                                         log(DEBUG,"key at %p is %s",key,key);
1385                                         if (strcasecmp(key,Ptr->key))
1386                                         {
1387                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1388                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1389                                                 return NULL;
1390                                         }
1391                                 }
1392                         }
1393                         log(DEBUG,"add_channel: no key");
1394
1395                         if (Ptr->inviteonly)
1396                         {
1397                                 log(DEBUG,"add_channel: channel is +i");
1398                                 if (user->IsInvited(Ptr->name))
1399                                 {
1400                                         /* user was invited to channel */
1401                                         /* there may be an optional channel NOTICE here */
1402                                 }
1403                                 else
1404                                 {
1405                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1406                                         return NULL;
1407                                 }
1408                         }
1409                         log(DEBUG,"add_channel: channel is not +i");
1410
1411                         if (Ptr->limit)
1412                         {
1413                                 if (usercount(Ptr) == Ptr->limit)
1414                                 {
1415                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1416                                         return NULL;
1417                                 }
1418                         }
1419
1420                         log(DEBUG,"add_channel: about to walk banlist");
1421
1422                         /* check user against the channel banlist */
1423                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1424                         {
1425                                 if (match(user->GetFullHost(),i->data))
1426                                 {
1427                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1428                                         return NULL;
1429                                 }
1430                         }
1431
1432                         log(DEBUG,"add_channel: bans checked");
1433
1434                         user->RemoveInvite(Ptr->name);
1435
1436                         log(DEBUG,"add_channel: invites removed");
1437
1438                 }
1439                 created = 1;
1440         }
1441
1442         log(DEBUG,"Passed channel checks");
1443
1444         for (i =0; i != MAXCHANS; i++)
1445         {
1446                 if (user->chans[i].channel == NULL)
1447                 {
1448                         log(DEBUG,"Adding into their channel list");
1449
1450                         if (created == 2)
1451                         {
1452                                 /* first user in is given ops */
1453                                 user->chans[i].uc_modes = UCMODE_OP;
1454                         }
1455                         else
1456                         {
1457                                 user->chans[i].uc_modes = 0;
1458                         }
1459                         user->chans[i].channel = Ptr;
1460                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1461
1462                         log(DEBUG,"Sent JOIN to client");
1463
1464                         if (Ptr->topicset)
1465                         {
1466                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1467                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1468                         }
1469                         userlist(user,Ptr);
1470                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1471                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1472                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1473                         FOREACH_MOD OnUserJoin(user,Ptr);
1474                         return Ptr;
1475                 }
1476         }
1477         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1478         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1479         return NULL;
1480 }
1481
1482 /* remove a channel from a users record, and remove the record from memory
1483  * if the channel has become empty */
1484
1485 chanrec* del_channel(userrec *user, char* cname, char* reason)
1486 {
1487         if ((!user) || (!cname))
1488         {
1489                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1490                 return NULL;
1491         }
1492
1493         int i = 0;
1494         chanrec* Ptr;
1495         int created = 0;
1496
1497         if ((!cname) || (!user))
1498         {
1499                 return NULL;
1500         }
1501
1502         Ptr = FindChan(cname);
1503
1504         if (!Ptr)
1505         {
1506                 return NULL;
1507         }
1508
1509         FOREACH_MOD OnUserPart(user,Ptr);
1510         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1511
1512         for (i =0; i != MAXCHANS; i++)
1513         {
1514                 /* zap it from the channel list of the user */
1515                 if (user->chans[i].channel == Ptr)
1516                 {
1517                         if (reason)
1518                         {
1519                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1520                         }
1521                         else
1522                         {
1523                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1524                         }
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 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1551 {
1552         if ((!src) || (!user) || (!Ptr) || (!reason))
1553         {
1554                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1555                 return;
1556         }
1557
1558         int i = 0;
1559         int created = 0;
1560
1561         if ((!Ptr) || (!user) || (!src))
1562         {
1563                 return;
1564         }
1565
1566         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1567
1568         if (!has_channel(user,Ptr))
1569         {
1570                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1571                 return;
1572         }
1573         if ((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr)))
1574         {
1575                 if (cstatus(src,Ptr) == STATUS_HOP)
1576                 {
1577                         WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1578                 }
1579                 else
1580                 {
1581                         WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1582                 }
1583
1584                 return;
1585         }
1586
1587         for (i =0; i != MAXCHANS; i++)
1588         {
1589                 /* zap it from the channel list of the user */
1590                 if (user->chans[i].channel == Ptr)
1591                 {
1592                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1593                         user->chans[i].uc_modes = 0;
1594                         user->chans[i].channel = NULL;
1595                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1596                         break;
1597                 }
1598         }
1599
1600         /* if there are no users left on the channel */
1601         if (!usercount(Ptr))
1602         {
1603                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1604
1605                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1606
1607                 /* kill the record */
1608                 if (iter != chanlist.end())
1609                 {
1610                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1611                         delete iter->second;
1612                         chanlist.erase(iter);
1613                 }
1614         }
1615 }
1616
1617
1618 /* returns 1 if user u has channel c in their record, 0 if not */
1619
1620 int has_channel(userrec *u, chanrec *c)
1621 {
1622         int i = 0;
1623
1624         if ((!u) || (!c))
1625         {
1626                 log(DEFAULT,"*** BUG *** has_channel was given an invalid parameter");
1627                 return 0;
1628         }
1629         for (i =0; i != MAXCHANS; i++)
1630         {
1631                 if (u->chans[i].channel == c)
1632                 {
1633                         return 1;
1634                 }
1635         }
1636         return 0;
1637 }
1638
1639 int give_ops(userrec *user,char *dest,chanrec *chan,int status)
1640 {
1641         userrec *d;
1642         int i;
1643
1644         if ((!user) || (!dest) || (!chan))
1645         {
1646                 log(DEFAULT,"*** BUG *** give_ops was given an invalid parameter");
1647                 return 0;
1648         }
1649         if (status != STATUS_OP)
1650         {
1651                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
1652                 return 0;
1653         }
1654         else
1655         {
1656                 if (!isnick(dest))
1657                 {
1658                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1659                         return 0;
1660                 }
1661                 d = Find(dest);
1662                 if (!d)
1663                 {
1664                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1665                         return 0;
1666                 }
1667                 else
1668                 {
1669                         for (i = 0; i != MAXCHANS; i++)
1670                         {
1671                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1672                                 {
1673                                         if (d->chans[i].uc_modes & UCMODE_OP)
1674                                         {
1675                                                 /* mode already set on user, dont allow multiple */
1676                                                 return 0;
1677                                         }
1678                                         d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_OP;
1679                                         log(DEBUG,"gave ops: %s %s",d->chans[i].channel->name,d->nick);
1680                                 }
1681                         }
1682                 }
1683         }
1684         return 1;
1685 }
1686
1687 int give_hops(userrec *user,char *dest,chanrec *chan,int status)
1688 {
1689         userrec *d;
1690         int i;
1691
1692         if ((!user) || (!dest) || (!chan))
1693         {
1694                 log(DEFAULT,"*** BUG *** give_hops was given an invalid parameter");
1695                 return 0;
1696         }
1697         if (status != STATUS_OP)
1698         {
1699                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
1700                 return 0;
1701         }
1702         else
1703         {
1704                 d = Find(dest);
1705                 if (!isnick(dest))
1706                 {
1707                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1708                         return 0;
1709                 }
1710                 if (!d)
1711                 {
1712                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1713                         return 0;
1714                 }
1715                 else
1716                 {
1717                         for (i = 0; i != MAXCHANS; i++)
1718                         {
1719                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1720                                 {
1721                                         if (d->chans[i].uc_modes & UCMODE_HOP)
1722                                         {
1723                                                 /* mode already set on user, dont allow multiple */
1724                                                 return 0;
1725                                         }
1726                                         d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_HOP;
1727                                         log(DEBUG,"gave h-ops: %s %s",d->chans[i].channel->name,d->nick);
1728                                 }
1729                         }
1730                 }
1731         }
1732         return 1;
1733 }
1734
1735 int give_voice(userrec *user,char *dest,chanrec *chan,int status)
1736 {
1737         userrec *d;
1738         int i;
1739
1740         if ((!user) || (!dest) || (!chan))
1741         {
1742                 log(DEFAULT,"*** BUG *** give_voice was given an invalid parameter");
1743                 return 0;
1744         }
1745         if (status < STATUS_HOP)
1746         {
1747                 WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
1748                 return 0;
1749         }
1750         else
1751         {
1752                 d = Find(dest);
1753                 if (!isnick(dest))
1754                 {
1755                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1756                         return 0;
1757                 }
1758                 if (!d)
1759                 {
1760                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1761                         return 0;
1762                 }
1763                 else
1764                 {
1765                         for (i = 0; i != MAXCHANS; i++)
1766                         {
1767                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1768                                 {
1769                                         if (d->chans[i].uc_modes & UCMODE_VOICE)
1770                                         {
1771                                                 /* mode already set on user, dont allow multiple */
1772                                                 return 0;
1773                                         }
1774                                         d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_VOICE;
1775                                         log(DEBUG,"gave voice: %s %s",d->chans[i].channel->name,d->nick);
1776                                 }
1777                         }
1778                 }
1779         }
1780         return 1;
1781 }
1782
1783 int take_ops(userrec *user,char *dest,chanrec *chan,int status)
1784 {
1785         userrec *d;
1786         int i;
1787
1788         if ((!user) || (!dest) || (!chan))
1789         {
1790                 log(DEFAULT,"*** BUG *** take_ops was given an invalid parameter");
1791                 return 0;
1792         }
1793         if (status != STATUS_OP)
1794         {
1795                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
1796                 return 0;
1797         }
1798         else
1799         {
1800                 d = Find(dest);
1801                 if (!isnick(dest))
1802                 {
1803                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1804                         return 0;
1805                 }
1806                 if (!d)
1807                 {
1808                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1809                         return 0;
1810                 }
1811                 else
1812                 {
1813                         for (i = 0; i != MAXCHANS; i++)
1814                         {
1815                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1816                                 {
1817                                         if ((d->chans[i].uc_modes & UCMODE_OP) == 0)
1818                                         {
1819                                                 /* mode already set on user, dont allow multiple */
1820                                                 return 0;
1821                                         }
1822                                         d->chans[i].uc_modes ^= UCMODE_OP;
1823                                         log(DEBUG,"took ops: %s %s",d->chans[i].channel->name,d->nick);
1824                                 }
1825                         }
1826                 }
1827         }
1828         return 1;
1829 }
1830
1831 int take_hops(userrec *user,char *dest,chanrec *chan,int status)
1832 {
1833         userrec *d;
1834         int i;
1835
1836         if ((!user) || (!dest) || (!chan))
1837         {
1838                 log(DEFAULT,"*** BUG *** take_hops was given an invalid parameter");
1839                 return 0;
1840         }
1841         if (status != STATUS_OP)
1842         {
1843                 WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
1844                 return 0;
1845         }
1846         else
1847         {
1848                 d = Find(dest);
1849                 if (!isnick(dest))
1850                 {
1851                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1852                         return 0;
1853                 }
1854                 if (!d)
1855                 {
1856                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1857                         return 0;
1858                 }
1859                 else
1860                 {
1861                         for (i = 0; i != MAXCHANS; i++)
1862                         {
1863                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1864                                 {
1865                                         if ((d->chans[i].uc_modes & UCMODE_HOP) == 0)
1866                                         {
1867                                                 /* mode already set on user, dont allow multiple */
1868                                                 return 0;
1869                                         }
1870                                         d->chans[i].uc_modes ^= UCMODE_HOP;
1871                                         log(DEBUG,"took h-ops: %s %s",d->chans[i].channel->name,d->nick);
1872                                 }
1873                         }
1874                 }
1875         }
1876         return 1;
1877 }
1878
1879 int take_voice(userrec *user,char *dest,chanrec *chan,int status)
1880 {
1881         userrec *d;
1882         int i;
1883
1884         if ((!user) || (!dest) || (!chan))
1885         {
1886                 log(DEFAULT,"*** BUG *** take_voice was given an invalid parameter");
1887                 return 0;
1888         }
1889         if (status < STATUS_HOP)
1890         {
1891                 WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
1892                 return 0;
1893         }
1894         else
1895         {
1896                 d = Find(dest);
1897                 if (!isnick(dest))
1898                 {
1899                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1900                         return 0;
1901                 }
1902                 if (!d)
1903                 {
1904                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, dest);
1905                         return 0;
1906                 }
1907                 else
1908                 {
1909                         for (i = 0; i != MAXCHANS; i++)
1910                         {
1911                                 if ((d->chans[i].channel == chan) && (chan != NULL))
1912                                 {
1913                                         if ((d->chans[i].uc_modes & UCMODE_VOICE) == 0)
1914                                         {
1915                                                 /* mode already set on user, dont allow multiple */
1916                                                 return 0;
1917                                         }
1918                                         d->chans[i].uc_modes ^= UCMODE_VOICE;
1919                                         log(DEBUG,"took voice: %s %s",d->chans[i].channel->name,d->nick);
1920                                 }
1921                         }
1922                 }
1923         }
1924         return 1;
1925 }
1926
1927 void TidyBan(char *ban)
1928 {
1929         if (!ban) {
1930                 log(DEFAULT,"*** BUG *** TidyBan was given an invalid parameter");
1931                 return;
1932         }
1933
1934         char temp[MAXBUF],NICK[MAXBUF],IDENT[MAXBUF],HOST[MAXBUF];
1935
1936         strcpy(temp,ban);
1937
1938         char* pos_of_pling = strchr(temp,'!');
1939         char* pos_of_at = strchr(temp,'@');
1940
1941         pos_of_pling[0] = '\0';
1942         pos_of_at[0] = '\0';
1943         pos_of_pling++;
1944         pos_of_at++;
1945
1946         strncpy(NICK,temp,NICKMAX);
1947         strncpy(IDENT,pos_of_pling,IDENTMAX+1);
1948         strncpy(HOST,pos_of_at,160);
1949
1950         sprintf(ban,"%s!%s@%s",NICK,IDENT,HOST);
1951 }
1952
1953 int add_ban(userrec *user,char *dest,chanrec *chan,int status)
1954 {
1955         if ((!user) || (!dest) || (!chan)) {
1956                 log(DEFAULT,"*** BUG *** add_ban was given an invalid parameter");
1957                 return 0;
1958         }
1959
1960         BanItem b;
1961         if ((!user) || (!dest) || (!chan))
1962                 return 0;
1963         if (strchr(dest,'!')==0)
1964                 return 0;
1965         if (strchr(dest,'@')==0)
1966                 return 0;
1967         for (int i = 0; i < strlen(dest); i++)
1968                 if (dest[i] < 32)
1969                         return 0;
1970         for (int i = 0; i < strlen(dest); i++)
1971                 if (dest[i] > 126)
1972                         return 0;
1973         int c = 0;
1974         for (int i = 0; i < strlen(dest); i++)
1975                 if (dest[i] == '!')
1976                         c++;
1977         if (c>1)
1978                 return 0;
1979         c = 0;
1980         for (int i = 0; i < strlen(dest); i++)
1981                 if (dest[i] == '@')
1982                         c++;
1983         if (c>1)
1984                 return 0;
1985         log(DEBUG,"add_ban: %s %s",chan->name,user->nick);
1986
1987         TidyBan(dest);
1988         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
1989         {
1990                 if (!strcasecmp(i->data,dest))
1991                 {
1992                         // dont allow a user to set the same ban twice
1993                         return 0;
1994                 }
1995         }
1996
1997         b.set_time = time(NULL);
1998         strncpy(b.data,dest,MAXBUF);
1999         strncpy(b.set_by,user->nick,NICKMAX);
2000         chan->bans.push_back(b);
2001         return 1;
2002 }
2003
2004 int take_ban(userrec *user,char *dest,chanrec *chan,int status)
2005 {
2006         if ((!user) || (!dest) || (!chan)) {
2007                 log(DEFAULT,"*** BUG *** take_ban was given an invalid parameter");
2008                 return 0;
2009         }
2010
2011         log(DEBUG,"del_ban: %s %s",chan->name,user->nick);
2012         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
2013         {
2014                 if (!strcasecmp(i->data,dest))
2015                 {
2016                         chan->bans.erase(i);
2017                         return 1;
2018                 }
2019         }
2020         return 0;
2021 }
2022
2023 void process_modes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode)
2024 {
2025         if ((!parameters) || (!user)) {
2026                 log(DEFAULT,"*** BUG *** process_modes was given an invalid parameter");
2027                 return;
2028         }
2029
2030
2031         char modelist[MAXBUF];
2032         char outlist[MAXBUF];
2033         char outstr[MAXBUF];
2034         char outpars[32][MAXBUF];
2035         int param = 2;
2036         int pc = 0;
2037         int ptr = 0;
2038         int mdir = 1;
2039         int r = 0;
2040         bool k_set = false, l_set = false;
2041
2042         if (pcnt < 2)
2043         {
2044                 return;
2045         }
2046
2047         log(DEBUG,"process_modes: start");
2048
2049         strcpy(modelist,parameters[1]); /* mode list, e.g. +oo-o */
2050                                         /* parameters[2] onwards are parameters for
2051                                          * modes that require them :) */
2052         strcpy(outlist,"+");
2053         mdir = 1;
2054
2055         log(DEBUG,"process_modes: modelist: %s",modelist);
2056
2057         for (ptr = 0; ptr < strlen(modelist); ptr++)
2058         {
2059                 r = 0;
2060
2061                 {
2062                         log(DEBUG,"process_modes: modechar: %c",modelist[ptr]);
2063                         char modechar = modelist[ptr];
2064                         switch (modelist[ptr])
2065                         {
2066                                 case '-':
2067                                         if (mdir != 0)
2068                                         {
2069                                                 if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-'))
2070                                                 {
2071                                                         outlist[strlen(outlist)-1] = '-';
2072                                                 }
2073                                                 else
2074                                                 {
2075                                                         strcat(outlist,"-");
2076                                                 }
2077                                         }
2078                                         mdir = 0;
2079
2080                                 break;
2081
2082                                 case '+':
2083                                         if (mdir != 1)
2084                                         {
2085                                                 if ((outlist[strlen(outlist)-1] == '+') || (outlist[strlen(outlist)-1] == '-'))
2086                                                 {
2087                                                         outlist[strlen(outlist)-1] = '+';
2088                                                 }
2089                                                 else
2090                                                 {
2091                                                         strcat(outlist,"+");
2092                                                 }
2093                                         }
2094                                         mdir = 1;
2095                                 break;
2096
2097                                 case 'o':
2098                                         if ((param >= pcnt)) break;
2099                                         if (mdir == 1)
2100                                         {
2101                                                 r = give_ops(user,parameters[param++],chan,status);
2102                                         }
2103                                         else
2104                                         {
2105                                                 r = take_ops(user,parameters[param++],chan,status);
2106                                         }
2107                                         if (r)
2108                                         {
2109                                                 strcat(outlist,"o");
2110                                                 strcpy(outpars[pc++],parameters[param-1]);
2111                                         }
2112                                 break;
2113
2114                                 case 'h':
2115                                         if ((param >= pcnt)) break;
2116                                         if (mdir == 1)
2117                                         {
2118                                                 r = give_hops(user,parameters[param++],chan,status);
2119                                         }
2120                                         else
2121                                         {
2122                                                 r = take_hops(user,parameters[param++],chan,status);
2123                                         }
2124                                         if (r)
2125                                         {
2126                                                 strcat(outlist,"h");
2127                                                 strcpy(outpars[pc++],parameters[param-1]);
2128                                         }
2129                                 break;
2130
2131
2132                                 case 'v':
2133                                         if ((param >= pcnt)) break;
2134                                         if (mdir == 1)
2135                                         {
2136                                                 r = give_voice(user,parameters[param++],chan,status);
2137                                         }
2138                                         else
2139                                         {
2140                                                 r = take_voice(user,parameters[param++],chan,status);
2141                                         }
2142                                         if (r)
2143                                         {
2144                                                 strcat(outlist,"v");
2145                                                 strcpy(outpars[pc++],parameters[param-1]);
2146                                         }
2147                                 break;
2148
2149                                 case 'b':
2150                                         if ((param >= pcnt)) break;
2151                                         if (mdir == 1)
2152                                         {
2153                                                 r = add_ban(user,parameters[param++],chan,status);
2154                                         }
2155                                         else
2156                                         {
2157                                                 r = take_ban(user,parameters[param++],chan,status);
2158                                         }
2159                                         if (r)
2160                                         {
2161                                                 strcat(outlist,"b");
2162                                                 strcpy(outpars[pc++],parameters[param-1]);
2163                                         }
2164                                 break;
2165
2166
2167                                 case 'k':
2168                                         if ((param >= pcnt))
2169                                                 break;
2170
2171                                         if (mdir == 1)
2172                                         {
2173                                                 if (k_set)
2174                                                         break;
2175
2176                                                 if (!strcmp(chan->key,""))
2177                                                 {
2178                                                         strcat(outlist,"k");
2179                                                         char key[MAXBUF];
2180                                                         strcpy(key,parameters[param++]);
2181                                                         if (strlen(key)>32) {
2182                                                                 key[31] = '\0';
2183                                                         }
2184                                                         strcpy(outpars[pc++],key);
2185                                                         strcpy(chan->key,key);
2186                                                         k_set = true;
2187                                                 }
2188                                         }
2189                                         else
2190                                         {
2191                                                 /* checks on -k are case sensitive and only accurate to the
2192                                                    first 32 characters */
2193                                                 char key[MAXBUF];
2194                                                 strcpy(key,parameters[param++]);
2195                                                 if (strlen(key)>32) {
2196                                                         key[31] = '\0';
2197                                                 }
2198                                                 /* only allow -k if correct key given */
2199                                                 if (!strcmp(chan->key,key))
2200                                                 {
2201                                                         strcat(outlist,"k");
2202                                                         strcpy(chan->key,"");
2203                                                         strcpy(outpars[pc++],key);
2204                                                 }
2205                                         }
2206                                 break;
2207
2208                                 case 'l':
2209                                         if (mdir == 0)
2210                                         {
2211                                                 if (chan->limit)
2212                                                 {
2213                                                         strcat(outlist,"l");
2214                                                         chan->limit = 0;
2215                                                 }
2216                                         }
2217
2218                                         if ((param >= pcnt)) break;
2219                                         if (mdir == 1)
2220                                         {
2221                                                 if (l_set)
2222                                                         break;
2223
2224                                                 bool invalid = false;
2225                                                 for (int i = 0; i < strlen(parameters[param]); i++)
2226                                                 {
2227                                                         if ((parameters[param][i] < '0') || (parameters[param][i] > '9'))
2228                                                         {
2229                                                                 invalid = true;
2230                                                         }
2231                                                 }
2232                                                 if (atoi(parameters[param]) < 1)
2233                                                 {
2234                                                         invalid = true;
2235                                                 }
2236
2237                                                 if (invalid)
2238                                                         break;
2239
2240                                                 chan->limit = atoi(parameters[param]);
2241                                                 if (chan->limit)
2242                                                 {
2243                                                         strcat(outlist,"l");
2244                                                         strcpy(outpars[pc++],parameters[param++]);
2245                                                         l_set = true;
2246                                                 }
2247                                         }
2248                                 break;
2249
2250                                 case 'i':
2251                                         if (chan->inviteonly != mdir)
2252                                         {
2253                                                 strcat(outlist,"i");
2254                                         }
2255                                         chan->inviteonly = mdir;
2256                                 break;
2257
2258                                 case 't':
2259                                         if (chan->topiclock != mdir)
2260                                         {
2261                                                 strcat(outlist,"t");
2262                                         }
2263                                         chan->topiclock = mdir;
2264                                 break;
2265
2266                                 case 'n':
2267                                         if (chan->noexternal != mdir)
2268                                         {
2269                                                 strcat(outlist,"n");
2270                                         }
2271                                         chan->noexternal = mdir;
2272                                 break;
2273
2274                                 case 'm':
2275                                         if (chan->moderated != mdir)
2276                                         {
2277                                                 strcat(outlist,"m");
2278                                         }
2279                                         chan->moderated = mdir;
2280                                 break;
2281
2282                                 case 's':
2283                                         if (chan->secret != mdir)
2284                                         {
2285                                                 strcat(outlist,"s");
2286                                                 if (chan->c_private)
2287                                                 {
2288                                                         chan->c_private = 0;
2289                                                         if (mdir)
2290                                                         {
2291                                                                 strcat(outlist,"-p+");
2292                                                         }
2293                                                         else
2294                                                         {
2295                                                                 strcat(outlist,"+p-");
2296                                                         }
2297                                                 }
2298                                         }
2299                                         chan->secret = mdir;
2300                                 break;
2301
2302                                 case 'p':
2303                                         if (chan->c_private != mdir)
2304                                         {
2305                                                 strcat(outlist,"p");
2306                                                 if (chan->secret)
2307                                                 {
2308                                                         chan->secret = 0;
2309                                                         if (mdir)
2310                                                         {
2311                                                                 strcat(outlist,"-s+");
2312                                                         }
2313                                                         else
2314                                                         {
2315                                                                 strcat(outlist,"+s-");
2316                                                         }
2317                                                 }
2318                                         }
2319                                         chan->c_private = mdir;
2320                                 break;
2321
2322                                 default:
2323                                         log(DEBUG,"Preprocessing custom mode %c",modechar);
2324                                         string_list p;
2325                                         p.clear();
2326                                         if (((!strchr(chan->custom_modes,modechar)) && (!mdir)) || ((strchr(chan->custom_modes,modechar)) && (mdir)))
2327                                         {
2328                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",modechar,chan->name);
2329                                                 break;
2330                                         }
2331                                         if (ModeDefined(modechar,MT_CHANNEL))
2332                                         {
2333                                                 log(DEBUG,"A module has claimed this mode");
2334                                                 if (param<pcnt)
2335                                                 {
2336                                                         if ((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir))
2337                                                         {
2338                                                                 p.push_back(parameters[param]);
2339                                                         }
2340                                                         if ((ModeDefinedOff(modechar,MT_CHANNEL)>0) && (!mdir))
2341                                                         {
2342                                                                 p.push_back(parameters[param]);
2343                                                         }
2344                                                 }
2345                                                 bool handled = false;
2346                                                 if (param>=pcnt)
2347                                                 {
2348                                                         log(DEBUG,"Not enough parameters for module-mode %c",modechar);
2349                                                         // we're supposed to have a parameter, but none was given... so dont handle the mode.
2350                                                         if (((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(modechar,MT_CHANNEL)>0) && (!mdir)))
2351                                                         {
2352                                                                 handled = true;
2353                                                                 param++;
2354                                                         }
2355                                                 }
2356                                                 for (int i = 0; i <= MODCOUNT; i++)
2357                                                 {
2358                                                         if (!handled)
2359                                                         {
2360                                                                 if (modules[i]->OnExtendedMode(user,chan,modechar,MT_CHANNEL,mdir,p))
2361                                                                 {
2362                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
2363                                                                         char app[] = {modechar, 0};
2364                                                                         if (ptr>0)
2365                                                                         {
2366                                                                                 if ((modelist[ptr-1] == '+') || (modelist[ptr-1] == '-'))
2367                                                                                 {
2368                                                                                         strcat(outlist, app);
2369                                                                                 }
2370                                                                                 else if (!strchr(outlist,modechar))
2371                                                                                 {
2372                                                                                         strcat(outlist, app);
2373                                                                                 }
2374                                                                         }
2375                                                                         chan->SetCustomMode(modechar,mdir);
2376                                                                         // include parameters in output if mode has them
2377                                                                         if ((ModeDefinedOn(modechar,MT_CHANNEL)>0) && (mdir))
2378                                                                         {
2379                                                                                 chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir);
2380                                                                                 strcpy(outpars[pc++],parameters[param++]);
2381                                                                         }
2382                                                                         // break, because only one module can handle the mode.
2383                                                                         handled = true;
2384                                                                 }
2385                                                         }
2386                                                 }
2387                                         }
2388                                 break;
2389
2390                         }
2391                 }
2392         }
2393
2394         /* this ensures only the *valid* modes are sent out onto the network */
2395         while ((outlist[strlen(outlist)-1] == '-') || (outlist[strlen(outlist)-1] == '+'))
2396         {
2397                 outlist[strlen(outlist)-1] = '\0';
2398         }
2399         if (strcmp(outlist,""))
2400         {
2401                 strcpy(outstr,outlist);
2402                 for (ptr = 0; ptr < pc; ptr++)
2403                 {
2404                         strcat(outstr," ");
2405                         strcat(outstr,outpars[ptr]);
2406                 }
2407                 if (servermode)
2408                 {
2409                         WriteChannelWithServ(ServerName,chan,user,"MODE %s %s",chan->name,outstr);
2410                 }
2411                 else
2412                 {
2413                         WriteChannel(chan,user,"MODE %s %s",chan->name,outstr);
2414                 }
2415         }
2416 }
2417
2418 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
2419
2420 bool allowed_umode(char umode, char* sourcemodes,bool adding)
2421 {
2422         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
2423         // RFC1459 specified modes
2424         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
2425         {
2426                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
2427                 return true;
2428         }
2429
2430         // user may not +o themselves or others, but an oper may de-oper other opers or themselves
2431         if ((strchr(sourcemodes,'o')) && (!adding))
2432         {
2433                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
2434                 return true;
2435         }
2436         else if (umode == 'o')
2437         {
2438                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
2439                 return false;
2440         }
2441
2442         // process any module-defined modes that need oper
2443         if ((ModeDefinedOper(umode,MT_CLIENT)) && (strchr(sourcemodes,'o')))
2444         {
2445                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
2446                 return true;
2447         }
2448         else
2449         if (ModeDefined(umode,MT_CLIENT))
2450         {
2451                 // process any module-defined modes that don't need oper
2452                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
2453                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!strchr(sourcemodes,'o')))
2454                 {
2455                         // no, this mode needs oper, and this user 'aint got what it takes!
2456                         return false;
2457                 }
2458                 return true;
2459         }
2460
2461         // anything else - return false.
2462         log(DEBUG,"umode %c not known by any ruleset",umode);
2463         return false;
2464 }
2465
2466 bool process_module_umode(char umode, userrec* source, void* dest, bool adding)
2467 {
2468         string_list p;
2469         p.clear();
2470         if (ModeDefined(umode,MT_CLIENT))
2471         {
2472                 for (int i = 0; i <= MODCOUNT; i++)
2473                 {
2474                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
2475                         {
2476                                 log(DEBUG,"Module claims umode %c",umode);
2477                                 return true;
2478                         }
2479                 }
2480                 log(DEBUG,"No module claims umode %c",umode);
2481                 return false;
2482         }
2483         else
2484         {
2485                 log(DEBUG,"*** BUG *** Non-module umode passed to process_module_umode!");
2486                 return false;
2487         }
2488 }
2489
2490 void handle_mode(char **parameters, int pcnt, userrec *user)
2491 {
2492         chanrec* Ptr;
2493         userrec* dest;
2494         int can_change,i;
2495         int direction = 1;
2496         char outpars[MAXBUF];
2497
2498         dest = Find(parameters[0]);
2499
2500         if ((dest) && (pcnt == 1))
2501         {
2502                 WriteServ(user->fd,"221 %s :+%s",user->nick,user->modes);
2503                 return;
2504         }
2505
2506         if ((dest) && (pcnt > 1))
2507         {
2508                 char dmodes[MAXBUF];
2509                 strncpy(dmodes,dest->modes,MAXBUF);
2510                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
2511
2512                 can_change = 0;
2513                 if (user != dest)
2514                 {
2515                         if (strchr(user->modes,'o'))
2516                         {
2517                                 can_change = 1;
2518                         }
2519                 }
2520                 else
2521                 {
2522                         can_change = 1;
2523                 }
2524                 if (!can_change)
2525                 {
2526                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
2527                         return;
2528                 }
2529
2530                 strcpy(outpars,"+");
2531                 direction = 1;
2532
2533                 if ((parameters[1][0] != '+') && (parameters[1][0] != '-'))
2534                         return;
2535
2536                 for (i = 0; i < strlen(parameters[1]); i++)
2537                 {
2538                         if (parameters[1][i] == '+')
2539                         {
2540                                 if (direction != 1)
2541                                 {
2542                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2543                                         {
2544                                                 outpars[strlen(outpars)-1] = '+';
2545                                         }
2546                                         else
2547                                         {
2548                                                 strcat(outpars,"+");
2549                                         }
2550                                 }
2551                                 direction = 1;
2552                         }
2553                         else
2554                         if (parameters[1][i] == '-')
2555                         {
2556                                 if (direction != 0)
2557                                 {
2558                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2559                                         {
2560                                                 outpars[strlen(outpars)-1] = '-';
2561                                         }
2562                                         else
2563                                         {
2564                                                 strcat(outpars,"-");
2565                                         }
2566                                 }
2567                                 direction = 0;
2568                         }
2569                         else
2570                         {
2571                                 can_change = 0;
2572                                 if (strchr(user->modes,'o'))
2573                                 {
2574                                         can_change = 1;
2575                                 }
2576                                 else
2577                                 {
2578                                         if ((parameters[1][i] == 'i') || (parameters[1][i] == 'w') || (parameters[1][i] == 's') || (allowed_umode(parameters[1][i],user->modes,direction)))
2579                                         {
2580                                                 can_change = 1;
2581                                         }
2582                                 }
2583                                 if (can_change)
2584                                 {
2585                                         if (direction == 1)
2586                                         {
2587                                                 if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],user->modes,true)))
2588                                                 {
2589                                                         char umode = parameters[1][i];
2590                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
2591                                                         {
2592                                                                 dmodes[strlen(dmodes)+1]='\0';
2593                                                                 dmodes[strlen(dmodes)] = parameters[1][i];
2594                                                                 outpars[strlen(outpars)+1]='\0';
2595                                                                 outpars[strlen(outpars)] = parameters[1][i];
2596                                                         }
2597                                                 }
2598                                         }
2599                                         else
2600                                         {
2601                                                 if ((allowed_umode(parameters[1][i],user->modes,false)) && (strchr(dmodes,parameters[1][i])))
2602                                                 {
2603                                                         char umode = parameters[1][i];
2604                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
2605                                                         {
2606                                                                 int q = 0;
2607                                                                 char temp[MAXBUF];
2608                                                                 char moo[MAXBUF];
2609
2610                                                                 outpars[strlen(outpars)+1]='\0';
2611                                                                 outpars[strlen(outpars)] = parameters[1][i];
2612
2613                                                                 strcpy(temp,"");
2614                                                                 for (q = 0; q < strlen(dmodes); q++)
2615                                                                 {
2616                                                                         if (dmodes[q] != parameters[1][i])
2617                                                                         {
2618                                                                                 moo[0] = dmodes[q];
2619                                                                                 moo[1] = '\0';
2620                                                                                 strcat(temp,moo);
2621                                                                         }
2622                                                                 }
2623                                                                 strcpy(dmodes,temp);
2624                                                         }
2625                                                 }
2626                                         }
2627                                 }
2628                         }
2629                 }
2630                 if (strlen(outpars))
2631                 {
2632                         char b[MAXBUF];
2633                         strcpy(b,"");
2634                         int z = 0;
2635                         int i = 0;
2636                         while (i < strlen (outpars))
2637                         {
2638                                 b[z++] = outpars[i++];
2639                                 b[z] = '\0';
2640                                 if (i<strlen(outpars)-1)
2641                                 {
2642                                         if (((outpars[i] == '-') || (outpars[i] == '+')) && ((outpars[i+1] == '-') || (outpars[i+1] == '+')))
2643                                         {
2644                                                 // someones playing silly buggers and trying
2645                                                 // to put a +- or -+ into the line...
2646                                                 i++;
2647                                         }
2648                                 }
2649                                 if (i == strlen(outpars)-1)
2650                                 {
2651                                         if ((outpars[i] == '-') || (outpars[i] == '+'))
2652                                         {
2653                                                 i++;
2654                                         }
2655                                 }
2656                         }
2657
2658                         z = strlen(b)-1;
2659                         if ((b[z] == '-') || (b[z] == '+'))
2660                                 b[z] == '\0';
2661
2662                         if ((!strcmp(b,"+")) || (!strcmp(b,"-")))
2663                                 return;
2664
2665                         WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
2666
2667                         if (strlen(dmodes)>MAXMODES)
2668                         {
2669                                 dmodes[MAXMODES-1] = '\0';
2670                         }
2671                         log(DEBUG,"Stripped mode line");
2672                         log(DEBUG,"Line dest is now %s",dmodes);
2673                         strncpy(dest->modes,dmodes,MAXMODES);
2674
2675                 }
2676
2677                 return;
2678         }
2679
2680         Ptr = FindChan(parameters[0]);
2681         if (Ptr)
2682         {
2683                 if (pcnt == 1)
2684                 {
2685                         /* just /modes #channel */
2686                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr));
2687                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
2688                         return;
2689                 }
2690                 else
2691                 if (pcnt == 2)
2692                 {
2693                         if ((!strcmp(parameters[1],"+b")) || (!strcmp(parameters[1],"b")))
2694                         {
2695
2696                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
2697                                 {
2698                                         WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
2699                                 }
2700                                 WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
2701                         }
2702                 }
2703
2704                 if ((cstatus(user,Ptr) < STATUS_HOP) && (Ptr))
2705                 {
2706                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name);
2707                         return;
2708                 }
2709
2710                 process_modes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false);
2711         }
2712         else
2713         {
2714                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
2715         }
2716 }
2717
2718
2719
2720
2721 void server_mode(char **parameters, int pcnt, userrec *user)
2722 {
2723         chanrec* Ptr;
2724         userrec* dest;
2725         int can_change,i;
2726         int direction = 1;
2727         char outpars[MAXBUF];
2728
2729         dest = Find(parameters[0]);
2730
2731         // fix: ChroNiCk found this - we cant use this as debug if its null!
2732         if (dest)
2733         {
2734                 log(DEBUG,"server_mode on %s",dest->nick);
2735         }
2736
2737         if ((dest) && (pcnt > 1))
2738         {
2739                 log(DEBUG,"params > 1");
2740
2741                 char dmodes[MAXBUF];
2742                 strncpy(dmodes,dest->modes,MAXBUF);
2743
2744                 strcpy(outpars,"+");
2745                 direction = 1;
2746
2747                 if ((parameters[1][0] != '+') && (parameters[1][0] != '-'))
2748                         return;
2749
2750                 for (i = 0; i < strlen(parameters[1]); i++)
2751                 {
2752                         if (parameters[1][i] == '+')
2753                         {
2754                                 if (direction != 1)
2755                                 {
2756                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2757                                         {
2758                                                 outpars[strlen(outpars)-1] = '+';
2759                                         }
2760                                         else
2761                                         {
2762                                                 strcat(outpars,"+");
2763                                         }
2764                                 }
2765                                 direction = 1;
2766                         }
2767                         else
2768                         if (parameters[1][i] == '-')
2769                         {
2770                                 if (direction != 0)
2771                                 {
2772                                         if ((outpars[strlen(outpars)-1] == '+') || (outpars[strlen(outpars)-1] == '-'))
2773                                         {
2774                                                 outpars[strlen(outpars)-1] = '-';
2775                                         }
2776                                         else
2777                                         {
2778                                                 strcat(outpars,"-");
2779                                         }
2780                                 }
2781                                 direction = 0;
2782                         }
2783                         else
2784                         {
2785                                 log(DEBUG,"begin mode processing entry");
2786                                 can_change = 1;
2787                                 if (can_change)
2788                                 {
2789                                         if (direction == 1)
2790                                         {
2791                                                 log(DEBUG,"umode %c being added",parameters[1][i]);
2792                                                 if ((!strchr(dmodes,parameters[1][i])) && (allowed_umode(parameters[1][i],user->modes,true)))
2793                                                 {
2794                                                         char umode = parameters[1][i];
2795                                                         log(DEBUG,"umode %c is an allowed umode",umode);
2796                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
2797                                                         {
2798                                                                 dmodes[strlen(dmodes)+1]='\0';
2799                                                                 dmodes[strlen(dmodes)] = parameters[1][i];
2800                                                                 outpars[strlen(outpars)+1]='\0';
2801                                                                 outpars[strlen(outpars)] = parameters[1][i];
2802                                                         }
2803                                                 }
2804                                         }
2805                                         else
2806                                         {
2807                                                 // can only remove a mode they already have
2808                                                 log(DEBUG,"umode %c being removed",parameters[1][i]);
2809                                                 if ((allowed_umode(parameters[1][i],user->modes,false)) && (strchr(dmodes,parameters[1][i])))
2810                                                 {
2811                                                         char umode = parameters[1][i];
2812                                                         log(DEBUG,"umode %c is an allowed umode",umode);
2813                                                         if ((process_module_umode(umode, user, dest, direction)) || (umode == 'i') || (umode == 's') || (umode == 'w') || (umode == 'o'))
2814                                                         {
2815                                                                 int q = 0;
2816                                                                 char temp[MAXBUF];
2817                                                                 char moo[MAXBUF];
2818
2819                                                                 outpars[strlen(outpars)+1]='\0';
2820                                                                 outpars[strlen(outpars)] = parameters[1][i];
2821
2822                                                                 strcpy(temp,"");
2823                                                                 for (q = 0; q < strlen(dmodes); q++)
2824                                                                 {
2825                                                                         if (dmodes[q] != parameters[1][i])
2826                                                                         {
2827                                                                                 moo[0] = dmodes[q];
2828                                                                                 moo[1] = '\0';
2829                                                                                 strcat(temp,moo);
2830                                                                         }
2831                                                                 }
2832                                                                 strcpy(dmodes,temp);
2833                                                         }
2834                                                 }
2835                                         }
2836                                 }
2837                         }
2838                 }
2839                 if (strlen(outpars))
2840                 {
2841                         char b[MAXBUF];
2842                         strcpy(b,"");
2843                         int z = 0;
2844                         int i = 0;
2845                         while (i < strlen (outpars))
2846                         {
2847                                 b[z++] = outpars[i++];
2848                                 b[z] = '\0';
2849                                 if (i<strlen(outpars)-1)
2850                                 {
2851                                         if (((outpars[i] == '-') || (outpars[i] == '+')) && ((outpars[i+1] == '-') || (outpars[i+1] == '+')))
2852                                         {
2853                                                 // someones playing silly buggers and trying
2854                                                 // to put a +- or -+ into the line...
2855                                                 i++;
2856                                         }
2857                                 }
2858                                 if (i == strlen(outpars)-1)
2859                                 {
2860                                         if ((outpars[i] == '-') || (outpars[i] == '+'))
2861                                         {
2862                                                 i++;
2863                                         }
2864                                 }
2865                         }
2866
2867                         z = strlen(b)-1;
2868                         if ((b[z] == '-') || (b[z] == '+'))
2869                                 b[z] == '\0';
2870
2871                         if ((!strcmp(b,"+")) || (!strcmp(b,"-")))
2872                                 return;
2873
2874                         WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
2875
2876                         if (strlen(dmodes)>MAXMODES)
2877                         {
2878                                 dmodes[MAXMODES-1] = '\0';
2879                         }
2880                         log(DEBUG,"Stripped mode line");
2881                         log(DEBUG,"Line dest is now %s",dmodes);
2882                         strncpy(dest->modes,dmodes,MAXMODES);
2883
2884                 }
2885
2886                 return;
2887         }
2888
2889         Ptr = FindChan(parameters[0]);
2890         if (Ptr)
2891         {
2892                 process_modes(parameters,user,Ptr,STATUS_OP,pcnt,true);
2893         }
2894         else
2895         {
2896                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
2897         }
2898 }
2899
2900
2901 /* This function pokes and hacks at a parameter list like the following:
2902  *
2903  * PART #winbot, #darkgalaxy :m00!
2904  *
2905  * to turn it into a series of individual calls like this:
2906  *
2907  * PART #winbot :m00!
2908  * PART #darkgalaxy :m00!
2909  *
2910  * The seperate calls are sent to a callback function provided by the caller
2911  * (the caller will usually call itself recursively). The callback function
2912  * must be a command handler. Calling this function on a line with no list causes
2913  * no action to be taken. You must provide a starting and ending parameter number
2914  * where the range of the list can be found, useful if you have a terminating
2915  * parameter as above which is actually not part of the list, or parameters
2916  * before the actual list as well. This code is used by many functions which
2917  * can function as "one to list" (see the RFC) */
2918
2919 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
2920 {
2921         char plist[MAXBUF];
2922         char *param;
2923         char *pars[32];
2924         char blog[32][MAXBUF];
2925         char blog2[32][MAXBUF];
2926         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
2927         char keystr[MAXBUF];
2928         char moo[MAXBUF];
2929
2930         for (i = 0; i <32; i++)
2931                 strcpy(blog[i],"");
2932
2933         for (i = 0; i <32; i++)
2934                 strcpy(blog2[i],"");
2935
2936         strcpy(moo,"");
2937         for (i = 0; i <10; i++)
2938         {
2939                 if (!parameters[i])
2940                 {
2941                         parameters[i] = moo;
2942                 }
2943         }
2944         if (joins)
2945         {
2946                 if (pcnt > 1) /* we have a key to copy */
2947                 {
2948                         strcpy(keystr,parameters[1]);
2949                 }
2950         }
2951
2952         if (!parameters[start])
2953         {
2954                 return 0;
2955         }
2956         if (!strchr(parameters[start],','))
2957         {
2958                 return 0;
2959         }
2960         strcpy(plist,"");
2961         for (i = start; i <= end; i++)
2962         {
2963                 if (parameters[i])
2964                 {
2965                         strcat(plist,parameters[i]);
2966                 }
2967         }
2968
2969         j = 0;
2970         param = plist;
2971
2972         t = strlen(plist);
2973         for (i = 0; i < t; i++)
2974         {
2975                 if (plist[i] == ',')
2976                 {
2977                         plist[i] = '\0';
2978                         strcpy(blog[j++],param);
2979                         param = plist+i+1;
2980                 }
2981         }
2982         strcpy(blog[j++],param);
2983         total = j;
2984
2985         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2986         {
2987                 strcat(keystr,",");
2988         }
2989
2990         if ((joins) && (keystr))
2991         {
2992                 if (strchr(keystr,','))
2993                 {
2994                         j = 0;
2995                         param = keystr;
2996                         t2 = strlen(keystr);
2997                         for (i = 0; i < t2; i++)
2998                         {
2999                                 if (keystr[i] == ',')
3000                                 {
3001                                         keystr[i] = '\0';
3002                                         strcpy(blog2[j++],param);
3003                                         param = keystr+i+1;
3004                                 }
3005                         }
3006                         strcpy(blog2[j++],param);
3007                         total2 = j;
3008                 }
3009         }
3010
3011         for (j = 0; j < total; j++)
3012         {
3013                 if (blog[j])
3014                 {
3015                         pars[0] = blog[j];
3016                 }
3017                 for (q = end; q < pcnt-1; q++)
3018                 {
3019                         if (parameters[q+1])
3020                         {
3021                                 pars[q-end+1] = parameters[q+1];
3022                         }
3023                 }
3024                 if ((joins) && (parameters[1]))
3025                 {
3026                         if (pcnt > 1)
3027                         {
3028                                 pars[1] = blog2[j];
3029                         }
3030                         else
3031                         {
3032                                 pars[1] = NULL;
3033                         }
3034                 }
3035                 /* repeatedly call the function with the hacked parameter list */
3036                 if ((joins) && (pcnt > 1))
3037                 {
3038                         if (pars[1])
3039                         {
3040                                 // pars[1] already set up and containing key from blog2[j]
3041                                 fn(pars,2,u);
3042                         }
3043                         else
3044                         {
3045                                 pars[1] = parameters[1];
3046                                 fn(pars,2,u);
3047                         }
3048                 }
3049                 else
3050                 {
3051                         fn(pars,pcnt-(end-start),u);
3052                 }
3053         }
3054
3055         return 1;
3056 }
3057
3058
3059 void handle_join(char **parameters, int pcnt, userrec *user)
3060 {
3061         chanrec* Ptr;
3062         int i = 0;
3063
3064         if (loop_call(handle_join,parameters,pcnt,user,0,0,1))
3065                 return;
3066         if (parameters[0][0] == '#')
3067         {
3068                 Ptr = add_channel(user,parameters[0],parameters[1]);
3069         }
3070 }
3071
3072
3073 void handle_part(char **parameters, int pcnt, userrec *user)
3074 {
3075         chanrec* Ptr;
3076
3077         if (pcnt > 1)
3078         {
3079                 if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-2,0))
3080                         return;
3081                 del_channel(user,parameters[0],parameters[1]);
3082         }
3083         else
3084         {
3085                 if (loop_call(handle_part,parameters,pcnt,user,0,pcnt-1,0))
3086                         return;
3087                 del_channel(user,parameters[0],NULL);
3088         }
3089 }
3090
3091 void handle_kick(char **parameters, int pcnt, userrec *user)
3092 {
3093         chanrec* Ptr = FindChan(parameters[0]);
3094         userrec* u   = Find(parameters[1]);
3095
3096         if ((!u) || (!Ptr))
3097         {
3098                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3099                 return;
3100         }
3101
3102         if (!has_channel(u,Ptr))
3103         {
3104                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, parameters[0]);
3105                 return;
3106         }
3107
3108         if (pcnt > 2)
3109         {
3110                 char reason[MAXBUF];
3111                 strncpy(reason,parameters[2],MAXBUF);
3112                 if (strlen(reason)>MAXKICK)
3113                 {
3114                         reason[MAXKICK-1] = '\0';
3115                 }
3116
3117                 kick_channel(user,u,Ptr,reason);
3118         }
3119         else
3120         {
3121                 kick_channel(user,u,Ptr,user->nick);
3122         }
3123 }
3124
3125
3126 void handle_die(char **parameters, int pcnt, userrec *user)
3127 {
3128         log(DEBUG,"die: %s",user->nick);
3129         if (!strcmp(parameters[0],diepass))
3130         {
3131                 WriteOpers("*** DIE command from %s!%s@%s, terminating...",user->nick,user->ident,user->host);
3132                 sleep(DieDelay);
3133                 Exit(ERROR);
3134         }
3135         else
3136         {
3137                 WriteOpers("*** Failed DIE Command from %s!%s@%s.",user->nick,user->ident,user->host);
3138         }
3139 }
3140
3141 void handle_restart(char **parameters, int pcnt, userrec *user)
3142 {
3143         log(DEBUG,"restart: %s",user->nick);
3144         if (!strcmp(parameters[0],restartpass))
3145         {
3146                 WriteOpers("*** RESTART command from %s!%s@%s, Pretending to restart till this is finished :D",user->nick,user->ident,user->host);
3147                 sleep(DieDelay);
3148                 Exit(ERROR);
3149                 /* Will finish this later when i can be arsed :) */
3150         }
3151         else
3152         {
3153                 WriteOpers("*** Failed RESTART Command from %s!%s@%s.",user->nick,user->ident,user->host);
3154         }
3155 }
3156
3157
3158 void kill_link(userrec *user,char* reason)
3159 {
3160         user_hash::iterator iter = clientlist.find(user->nick);
3161
3162         if (strlen(reason)>MAXQUIT)
3163         {
3164                 reason[MAXQUIT-1] = '\0';
3165         }
3166
3167         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
3168         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
3169         log(DEBUG,"closing fd %d",user->fd);
3170
3171         /* bugfix, cant close() a nonblocking socket (sux!) */
3172         if (user->registered == 7) {
3173                 FOREACH_MOD OnUserQuit(user);
3174                 WriteCommonExcept(user,"QUIT :%s",reason);
3175         }
3176
3177         /* push the socket on a stack of sockets due to be closed at the next opportunity
3178          * 'Client exited' is an exception to this as it means the client side has already
3179          * closed the socket, we don't need to do it.
3180          */
3181         if (strcmp(reason,"Client exited"))
3182         {
3183                 fd_reap.push_back(user->fd);
3184         }
3185
3186         bool do_purge = false;
3187
3188         if (user->registered == 7) {
3189                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
3190                 AddWhoWas(user);
3191         }
3192
3193         if (iter != clientlist.end())
3194         {
3195                 log(DEBUG,"deleting user hash value %d",iter->second);
3196                 if ((iter->second) && (user->registered == 7)) {
3197                         delete iter->second;
3198                 }
3199                 clientlist.erase(iter);
3200         }
3201
3202         if (user->registered == 7) {
3203                 purge_empty_chans();
3204         }
3205 }
3206
3207
3208 void handle_kill(char **parameters, int pcnt, userrec *user)
3209 {
3210         userrec *u = Find(parameters[0]);
3211         char killreason[MAXBUF];
3212
3213         log(DEBUG,"kill: %s %s",parameters[0],parameters[1]);
3214         if (u)
3215         {
3216                 WriteTo(user, u, "KILL %s :%s!%s!%s (%s)", u->nick, ServerName,user->dhost,user->nick,parameters[1]);
3217                 // :Brain!brain@NetAdmin.chatspike.net KILL [Brain] :homer!NetAdmin.chatspike.net!Brain (test kill)
3218                 WriteOpers("*** Local Kill by %s: %s!%s@%s (%s)",user->nick,u->nick,u->ident,u->host,parameters[1]);
3219                 sprintf(killreason,"Killed (%s (%s))",user->nick,parameters[1]);
3220                 kill_link(u,killreason);
3221         }
3222         else
3223         {
3224                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3225         }
3226 }
3227
3228 void handle_summon(char **parameters, int pcnt, userrec *user)
3229 {
3230         WriteServ(user->fd,"445 %s :SUMMON has been disabled (depreciated command)",user->nick);
3231 }
3232
3233 void handle_users(char **parameters, int pcnt, userrec *user)
3234 {
3235         WriteServ(user->fd,"445 %s :USERS has been disabled (depreciated command)",user->nick);
3236 }
3237
3238
3239 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
3240
3241 char* Passwd(userrec *user)
3242 {
3243         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3244         {
3245                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
3246                 {
3247                         return i->pass;
3248                 }
3249         }
3250         return "";
3251 }
3252
3253 bool IsDenied(userrec *user)
3254 {
3255         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3256         {
3257                 if (match(user->host,i->host) && (i->type == CC_DENY))
3258                 {
3259                         return true;
3260                 }
3261         }
3262         return false;
3263 }
3264
3265
3266
3267 void handle_pass(char **parameters, int pcnt, userrec *user)
3268 {
3269         // Check to make sure they havnt registered -- Fix by FCS
3270         if (user->registered == 7)
3271         {
3272                 WriteServ(user->fd,"462 %s :You may not reregister",user->nick);
3273                 return;
3274         }
3275         if (!strcasecmp(parameters[0],Passwd(user)))
3276         {
3277                 user->haspassed = true;
3278         }
3279 }
3280
3281 void handle_invite(char **parameters, int pcnt, userrec *user)
3282 {
3283         userrec* u = Find(parameters[0]);
3284         chanrec* c = FindChan(parameters[1]);
3285
3286         if ((!c) || (!u))
3287         {
3288                 if (!c)
3289                 {
3290                         WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[1]);
3291                 }
3292                 else
3293                 {
3294                         if (c->inviteonly)
3295                         {
3296                                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
3297                         }
3298                 }
3299
3300                 return;
3301         }
3302
3303         if (c->inviteonly)
3304         {
3305                 if (cstatus(user,c) < STATUS_HOP)
3306                 {
3307                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, c->name);
3308                         return;
3309                 }
3310         }
3311         u->InviteTo(c->name);
3312         WriteFrom(u->fd,user,"INVITE %s :%s",u->nick,c->name);
3313         WriteServ(user->fd,"341 %s %s %s",user->nick,u->nick,c->name);
3314 }
3315
3316 void handle_topic(char **parameters, int pcnt, userrec *user)
3317 {
3318         chanrec* Ptr;
3319
3320         if (pcnt == 1)
3321         {
3322                 if (strlen(parameters[0]) <= CHANMAX)
3323                 {
3324                         Ptr = FindChan(parameters[0]);
3325                         if (Ptr)
3326                         {
3327                                 if (Ptr->topicset)
3328                                 {
3329                                         WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
3330                                         WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
3331                                 }
3332                                 else
3333                                 {
3334                                         WriteServ(user->fd,"331 %s %s :No topic is set.", user->nick, Ptr->name);
3335                                 }
3336                         }
3337                         else
3338                         {
3339                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3340                         }
3341                 }
3342                 return;
3343         }
3344         else if (pcnt>1)
3345         {
3346                 if (strlen(parameters[0]) <= CHANMAX)
3347                 {
3348                         Ptr = FindChan(parameters[0]);
3349                         if (Ptr)
3350                         {
3351                                 if ((Ptr->topiclock) && (cstatus(user,Ptr)<STATUS_HOP))
3352                                 {
3353                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel", user->nick, Ptr->name);
3354                                         return;
3355                                 }
3356
3357                                 char topic[MAXBUF];
3358                                 strncpy(topic,parameters[1],MAXBUF);
3359                                 if (strlen(topic)>MAXTOPIC)
3360                                 {
3361                                         topic[MAXTOPIC-1] = '\0';
3362                                 }
3363
3364                                 strcpy(Ptr->topic,topic);
3365                                 strcpy(Ptr->setby,user->nick);
3366                                 Ptr->topicset = time(NULL);
3367                                 WriteChannel(Ptr,user,"TOPIC %s :%s",Ptr->name, Ptr->topic);
3368                         }
3369                         else
3370                         {
3371                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3372                         }
3373                 }
3374         }
3375 }
3376
3377 /* sends out an error notice to all connected clients (not to be used
3378  * lightly!) */
3379
3380 void send_error(char *s)
3381 {
3382         log(DEBUG,"send_error: %s",s);
3383         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3384         {
3385                 if (isnick(i->second->nick))
3386                 {
3387                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
3388                 }
3389                 else
3390                 {
3391                         // fix - unregistered connections receive ERROR, not NOTICE
3392                         Write(i->second->fd,"ERROR :%s",s);
3393                 }
3394         }
3395 }
3396
3397 void Error(int status)
3398 {
3399         signal (SIGALRM, SIG_IGN);
3400         signal (SIGPIPE, SIG_IGN);
3401         signal (SIGTERM, SIG_IGN);
3402         signal (SIGABRT, SIG_IGN);
3403         signal (SIGSEGV, SIG_IGN);
3404         signal (SIGURG, SIG_IGN);
3405         signal (SIGKILL, SIG_IGN);
3406         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
3407         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
3408         exit(status);
3409 }
3410
3411 int main (int argc, char *argv[])
3412 {
3413         Start();
3414         log(DEBUG,"*** InspIRCd starting up!");
3415         if (!FileExists(CONFIG_FILE))
3416         {
3417                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
3418                 log(DEBUG,"main: no config");
3419                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
3420                 Exit(ERROR);
3421         }
3422         if (argc > 1) {
3423                 if (!strcmp(argv[1],"-nofork")) {
3424                         nofork = true;
3425                 }
3426         }
3427         if (InspIRCd() == ERROR)
3428         {
3429                 log(DEBUG,"main: daemon function bailed");
3430                 printf("ERROR: could not initialise. Shutting down.\n");
3431                 Exit(ERROR);
3432         }
3433         Exit(TRUE);
3434         return 0;
3435 }
3436
3437 template<typename T> inline string ConvToStr(const T &in)
3438 {
3439         stringstream tmp;
3440         if (!(tmp << in)) return string();
3441         return tmp.str();
3442 }
3443
3444 /* re-allocates a nick in the user_hash after they change nicknames,
3445  * returns a pointer to the new user as it may have moved */
3446
3447 userrec* ReHashNick(char* Old, char* New)
3448 {
3449         user_hash::iterator newnick;
3450         user_hash::iterator oldnick = clientlist.find(Old);
3451
3452         log(DEBUG,"ReHashNick: %s %s",Old,New);
3453
3454         if (!strcasecmp(Old,New))
3455         {
3456                 log(DEBUG,"old nick is new nick, skipping");
3457                 return oldnick->second;
3458         }
3459
3460         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
3461
3462         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
3463
3464         clientlist[New] = new userrec();
3465         clientlist[New] = oldnick->second;
3466         /*delete oldnick->second; */
3467         clientlist.erase(oldnick);
3468
3469         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
3470
3471         return clientlist[New];
3472 }
3473
3474 /* adds or updates an entry in the whowas list */
3475 void AddWhoWas(userrec* u)
3476 {
3477         user_hash::iterator iter = whowas.find(u->nick);
3478         userrec *a = new userrec();
3479         strcpy(a->nick,u->nick);
3480         strcpy(a->ident,u->ident);
3481         strcpy(a->dhost,u->dhost);
3482         strcpy(a->host,u->host);
3483         strcpy(a->fullname,u->fullname);
3484         strcpy(a->server,u->server);
3485         a->signon = u->signon;
3486
3487         /* MAX_WHOWAS:   max number of /WHOWAS items
3488          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
3489          *               can be replaced by a newer one
3490          */
3491
3492         if (iter == whowas.end())
3493         {
3494                 if (whowas.size() == WHOWAS_MAX)
3495                 {
3496                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
3497                         {
3498                                 // 3600 seconds in an hour ;)
3499                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
3500                                 {
3501                                         delete i->second;
3502                                         i->second = a;
3503                                         log(DEBUG,"added WHOWAS entry, purged an old record");
3504                                         return;
3505                                 }
3506                         }
3507                 }
3508                 else
3509                 {
3510                         log(DEBUG,"added fresh WHOWAS entry");
3511                         whowas[a->nick] = a;
3512                 }
3513         }
3514         else
3515         {
3516                 log(DEBUG,"updated WHOWAS entry");
3517                 delete iter->second;
3518                 iter->second = a;
3519         }
3520 }
3521
3522
3523 /* add a client connection to the sockets list */
3524 void AddClient(int socket, char* host, int port, bool iscached)
3525 {
3526         int i;
3527         int blocking = 1;
3528         char resolved[MAXBUF];
3529         string tempnick;
3530         char tn2[MAXBUF];
3531         user_hash::iterator iter;
3532
3533         tempnick = ConvToStr(socket) + "-unknown";
3534         sprintf(tn2,"%d-unknown",socket);
3535
3536         iter = clientlist.find(tempnick);
3537
3538         if (iter != clientlist.end()) return;
3539
3540         /*
3541          * It is OK to access the value here this way since we know
3542          * it exists, we just created it above.
3543          *
3544          * At NO other time should you access a value in a map or a
3545          * hash_map this way.
3546          */
3547         clientlist[tempnick] = new userrec();
3548
3549         NonBlocking(socket);
3550         log(DEBUG,"AddClient: %d %s %d",socket,host,port);
3551
3552         clientlist[tempnick]->fd = socket;
3553         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
3554         strncpy(clientlist[tempnick]->host, host,160);
3555         strncpy(clientlist[tempnick]->dhost, host,160);
3556         strncpy(clientlist[tempnick]->server, ServerName,256);
3557         strncpy(clientlist[tempnick]->ident, "unknown",9);
3558         clientlist[tempnick]->registered = 0;
3559         clientlist[tempnick]->signon = time(NULL);
3560         clientlist[tempnick]->nping = time(NULL)+240;
3561         clientlist[tempnick]->lastping = 1;
3562         clientlist[tempnick]->port = port;
3563
3564         if (iscached)
3565         {
3566                 WriteServ(socket,"NOTICE Auth :Found your hostname (cached)...");
3567         }
3568         else
3569         {
3570                 WriteServ(socket,"NOTICE Auth :Looking up your hostname...");
3571         }
3572
3573         // set the registration timeout for this user
3574         unsigned long class_regtimeout = 90;
3575         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
3576         {
3577                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
3578                 {
3579                         class_regtimeout = (unsigned long)i->registration_timeout;
3580                         break;
3581                 }
3582         }
3583         log(DEBUG,"Client has a connection timeout value of %d",class_regtimeout);
3584         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
3585
3586         if (clientlist.size() == MAXCLIENTS)
3587                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
3588 }
3589
3590 void handle_names(char **parameters, int pcnt, userrec *user)
3591 {
3592         chanrec* c;
3593
3594         if (loop_call(handle_names,parameters,pcnt,user,0,pcnt-1,0))
3595                 return;
3596         c = FindChan(parameters[0]);
3597         if (c)
3598         {
3599                 /*WriteServ(user->fd,"353 %s = %s :%s", user->nick, c->name,*/
3600                 userlist(user,c);
3601                 WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, c->name);
3602         }
3603         else
3604         {
3605                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3606         }
3607 }
3608
3609
3610 void handle_privmsg(char **parameters, int pcnt, userrec *user)
3611 {
3612         userrec *dest;
3613         chanrec *chan;
3614
3615         user->idle_lastmsg = time(NULL);
3616
3617         if (loop_call(handle_privmsg,parameters,pcnt,user,0,pcnt-2,0))
3618                 return;
3619         if (parameters[0][0] == '#')
3620         {
3621                 chan = FindChan(parameters[0]);
3622                 if (chan)
3623                 {
3624                         if ((chan->noexternal) && (!has_channel(user,chan)))
3625                         {
3626                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
3627                                 return;
3628                         }
3629                         if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
3630                         {
3631                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
3632                                 return;
3633                         }
3634                         ChanExceptSender(chan, user, "PRIVMSG %s :%s", chan->name, parameters[1]);
3635                 }
3636                 else
3637                 {
3638                         /* no such nick/channel */
3639                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3640                 }
3641                 return;
3642         }
3643
3644         dest = Find(parameters[0]);
3645         if (dest)
3646         {
3647                 if (strcmp(dest->awaymsg,""))
3648                 {
3649                         /* auto respond with aweh msg */
3650                         WriteServ(user->fd,"301 %s %s :%s",user->nick,dest->nick,dest->awaymsg);
3651                 }
3652                 WriteTo(user, dest, "PRIVMSG %s :%s", dest->nick, parameters[1]);
3653         }
3654         else
3655         {
3656                 /* no such nick/channel */
3657                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3658         }
3659 }
3660
3661 void handle_notice(char **parameters, int pcnt, userrec *user)
3662 {
3663         userrec *dest;
3664         chanrec *chan;
3665
3666         user->idle_lastmsg = time(NULL);
3667
3668         if (loop_call(handle_notice,parameters,pcnt,user,0,pcnt-2,0))
3669                 return;
3670         if (parameters[0][0] == '#')
3671         {
3672                 chan = FindChan(parameters[0]);
3673                 if (chan)
3674                 {
3675                         if ((chan->noexternal) && (!has_channel(user,chan)))
3676                         {
3677                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (no external messages)", user->nick, chan->name);
3678                                 return;
3679                         }
3680                         if ((chan->moderated) && (cstatus(user,chan)<STATUS_VOICE))
3681                         {
3682                                 WriteServ(user->fd,"404 %s %s :Cannot send to channel (+m)", user->nick, chan->name);
3683                                 return;
3684                         }
3685                         WriteChannel(chan, user, "NOTICE %s :%s", chan->name, parameters[1]);
3686                 }
3687                 else
3688                 {
3689                         /* no such nick/channel */
3690                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3691                 }
3692                 return;
3693         }
3694
3695         dest = Find(parameters[0]);
3696         if (dest)
3697         {
3698                 WriteTo(user, dest, "NOTICE %s :%s", dest->nick, parameters[1]);
3699         }
3700         else
3701         {
3702                 /* no such nick/channel */
3703                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3704         }
3705 }
3706
3707 char lst[MAXBUF];
3708
3709 char* chlist(userrec *user)
3710 {
3711         int i = 0;
3712         char cmp[MAXBUF];
3713
3714         log(DEBUG,"chlist: %s",user->nick);
3715         strcpy(lst,"");
3716         if (!user)
3717         {
3718                 return lst;
3719         }
3720         for (i = 0; i != MAXCHANS; i++)
3721         {
3722                 if (user->chans[i].channel != NULL)
3723                 {
3724                         if (user->chans[i].channel->name)
3725                         {
3726                                 strcpy(cmp,user->chans[i].channel->name);
3727                                 strcat(cmp," ");
3728                                 if (!strstr(lst,cmp))
3729                                 {
3730                                         if ((!user->chans[i].channel->c_private) && (!user->chans[i].channel->secret))
3731                                         {
3732                                                 strcat(lst,cmode(user,user->chans[i].channel));
3733                                                 strcat(lst,user->chans[i].channel->name);
3734                                                 strcat(lst," ");
3735                                         }
3736                                 }
3737                         }
3738                 }
3739         }
3740         return lst;
3741 }
3742
3743 void handle_info(char **parameters, int pcnt, userrec *user)
3744 {
3745         WriteServ(user->fd,"371 %s :The Inspire IRCd Project Has been brought to you by the following people..",user->nick);
3746         WriteServ(user->fd,"371 %s :Craig Edwards, Craig McLure, and Others..",user->nick);
3747         WriteServ(user->fd,"371 %s :Will finish this later when i can be arsed :p",user->nick);
3748         FOREACH_MOD OnInfo(user);
3749         WriteServ(user->fd,"374 %s :End of /INFO list",user->nick);
3750 }
3751
3752 void handle_time(char **parameters, int pcnt, userrec *user)
3753 {
3754         time_t rawtime;
3755         struct tm * timeinfo;
3756
3757         time ( &rawtime );
3758         timeinfo = localtime ( &rawtime );
3759         WriteServ(user->fd,"391 %s %s :%s",user->nick,ServerName, asctime (timeinfo) );
3760
3761 }
3762
3763 void handle_whois(char **parameters, int pcnt, userrec *user)
3764 {
3765         userrec *dest;
3766         char *t;
3767
3768         if (loop_call(handle_whois,parameters,pcnt,user,0,pcnt-1,0))
3769                 return;
3770         dest = Find(parameters[0]);
3771         if (dest)
3772         {
3773                 // bug found by phidjit - were able to whois an incomplete connection if it had sent a NICK or USER
3774                 if (dest->registered == 7)
3775                 {
3776                         WriteServ(user->fd,"311 %s %s %s %s * :%s",user->nick, dest->nick, dest->ident, dest->dhost, dest->fullname);
3777                         if ((user == dest) || (strchr(user->modes,'o')))
3778                         {
3779                                 WriteServ(user->fd,"378 %s %s :is connecting from *@%s",user->nick, dest->nick, dest->host);
3780                         }
3781                         if (strcmp(chlist(dest),""))
3782                         {
3783                                 WriteServ(user->fd,"319 %s %s :%s",user->nick, dest->nick, chlist(dest));
3784                         }
3785                         WriteServ(user->fd,"312 %s %s %s :%s",user->nick, dest->nick, dest->server, ServerDesc);
3786                         if (strcmp(dest->awaymsg,""))
3787                         {
3788                                 WriteServ(user->fd,"301 %s %s :%s",user->nick, dest->nick, dest->awaymsg);
3789                         }
3790                         if (strchr(dest->modes,'o'))
3791                         {
3792                                 WriteServ(user->fd,"313 %s %s :is an IRC operator",user->nick, dest->nick);
3793                         }
3794                         FOREACH_MOD OnWhois(user,dest);
3795                         //WriteServ(user->fd,"310 %s %s :is available for help.",user->nick, dest->nick);
3796                         WriteServ(user->fd,"317 %s %s %d %d :seconds idle, signon time",user->nick, dest->nick, abs((dest->idle_lastmsg)-time(NULL)), dest->signon);
3797
3798                         WriteServ(user->fd,"318 %s %s :End of /WHOIS list.",user->nick, dest->nick);
3799                 }
3800                 else
3801                 {
3802                         WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3803                 }
3804         }
3805         else
3806         {
3807                 /* no such nick/channel */
3808                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3809         }
3810 }
3811
3812 void handle_quit(char **parameters, int pcnt, userrec *user)
3813 {
3814         user_hash::iterator iter = clientlist.find(user->nick);
3815         char* reason;
3816
3817         if (user->registered == 7)
3818         {
3819                 /* theres more to do here, but for now just close the socket */
3820                 if (pcnt == 1)
3821                 {
3822                         if (parameters[0][0] == ':')
3823                         {
3824                                 *parameters[0]++;
3825                         }
3826                         reason = parameters[0];
3827
3828                         if (strlen(reason)>MAXQUIT)
3829                         {
3830                                 reason[MAXQUIT-1] = '\0';
3831                         }
3832
3833                         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,parameters[0]);
3834                         WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,parameters[0]);
3835                         WriteCommonExcept(user,"QUIT :%s%s",PrefixQuit,parameters[0]);
3836                 }
3837                 else
3838                 {
3839                         Write(user->fd,"ERROR :Closing link (%s@%s) [QUIT]",user->ident,user->host);
3840                         WriteOpers("*** Client exiting: %s!%s@%s [Client exited]",user->nick,user->ident,user->host);
3841                         WriteCommonExcept(user,"QUIT :Client exited");
3842                 }
3843                 FOREACH_MOD OnUserQuit(user);
3844                 AddWhoWas(user);
3845         }
3846
3847         /* push the socket on a stack of sockets due to be closed at the next opportunity */
3848         fd_reap.push_back(user->fd);
3849
3850         if (iter != clientlist.end())
3851         {
3852                 log(DEBUG,"deleting user hash value %d",iter->second);
3853                 if ((iter->second) && (user->registered == 7)) {
3854                         delete iter->second;
3855                 }
3856                 clientlist.erase(iter);
3857         }
3858
3859         if (user->registered == 7) {
3860                 purge_empty_chans();
3861         }
3862 }
3863
3864 void handle_who(char **parameters, int pcnt, userrec *user)
3865 {
3866         chanrec* Ptr = NULL;
3867
3868         /* theres more to do here, but for now just close the socket */
3869         if (pcnt == 1)
3870         {
3871                 if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")))
3872                 {
3873                         if (user->chans[0].channel)
3874                         {
3875                                 Ptr = user->chans[0].channel;
3876                                 for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3877                                 {
3878                                         if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
3879                                         {
3880                                                 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);
3881                                         }
3882                                 }
3883                         }
3884                         if (Ptr)
3885                         {
3886                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
3887                         }
3888                         else
3889                         {
3890                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, user->nick);
3891                         }
3892                         return;
3893                 }
3894                 if (parameters[0][0] = '#')
3895                 {
3896                         Ptr = FindChan(parameters[0]);
3897                         if (Ptr)
3898                         {
3899                                 for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3900                                 {
3901                                         if ((has_channel(i->second,Ptr)) && (isnick(i->second->nick)))
3902                                         {
3903                                                 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);
3904                                         }
3905                                 }
3906                                 WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
3907                         }
3908                         else
3909                         {
3910                                 WriteServ(user->fd,"401 %s %s :No suck nick/channel",user->nick, parameters[0]);
3911                         }
3912                 }
3913         }
3914         if (pcnt == 2)
3915         {
3916                 if ((!strcmp(parameters[0],"0")) || (!strcmp(parameters[0],"*")) && (!strcmp(parameters[1],"o")))
3917                 {
3918                         Ptr = user->chans[0].channel;
3919                         printf(user->chans[0].channel->name);
3920                         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3921                         {
3922                                 if ((common_channels(user,i->second)) && (isnick(i->second->nick)))
3923                                 {
3924                                         if (strchr(i->second->modes,'o'))
3925                                         {
3926                                                 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);
3927                                         }
3928                                 }
3929                         }
3930                         WriteServ(user->fd,"315 %s %s :End of /WHO list.",user->nick, Ptr->name);
3931                         return;
3932                 }
3933         }
3934 }
3935
3936 void handle_wallops(char **parameters, int pcnt, userrec *user)
3937 {
3938         WriteWallOps(user,"%s",parameters[0]);
3939 }
3940
3941 void handle_list(char **parameters, int pcnt, userrec *user)
3942 {
3943         chanrec* Ptr;
3944
3945         WriteServ(user->fd,"321 %s Channel :Users Name",user->nick);
3946         for (chan_hash::const_iterator i = chanlist.begin(); i != chanlist.end(); i++)
3947         {
3948                 if ((!i->second->c_private) && (!i->second->secret))
3949                 {
3950                         WriteServ(user->fd,"322 %s %s %d :[+%s] %s",user->nick,i->second->name,usercount_i(i->second),chanmodes(i->second),i->second->topic);
3951                 }
3952         }
3953         WriteServ(user->fd,"323 %s :End of channel list.",user->nick);
3954 }
3955
3956
3957 void handle_rehash(char **parameters, int pcnt, userrec *user)
3958 {
3959         WriteServ(user->fd,"382 %s %s :Rehashing",user->nick,CONFIG_FILE);
3960         ReadConfig();
3961         FOREACH_MOD OnRehash();
3962         WriteOpers("%s is rehashing config file %s",user->nick,CONFIG_FILE);
3963 }
3964
3965
3966 int usercnt(void)
3967 {
3968         return clientlist.size();
3969 }
3970
3971 int usercount_invisible(void)
3972 {
3973         int c = 0;
3974
3975         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3976         {
3977                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
3978         }
3979         return c;
3980 }
3981
3982 int usercount_opers(void)
3983 {
3984         int c = 0;
3985
3986         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3987         {
3988                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
3989         }
3990         return c;
3991 }
3992
3993 int usercount_unknown(void)
3994 {
3995         int c = 0;
3996
3997         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
3998         {
3999                 if ((i->second->fd) && (i->second->registered != 7))
4000                         c++;
4001         }
4002         return c;
4003 }
4004
4005 int chancount(void)
4006 {
4007         return chanlist.size();
4008 }
4009
4010 int servercount(void)
4011 {
4012         return 1;
4013 }
4014
4015 void handle_lusers(char **parameters, int pcnt, userrec *user)
4016 {
4017         WriteServ(user->fd,"251 %s :There are %d users and %d invisible on %d servers",user->nick,usercnt()-usercount_invisible(),usercount_invisible(),servercount());
4018         WriteServ(user->fd,"252 %s %d :operator(s) online",user->nick,usercount_opers());
4019         WriteServ(user->fd,"253 %s %d :unknown connections",user->nick,usercount_unknown());
4020         WriteServ(user->fd,"254 %s %d :channels formed",user->nick,chancount());
4021         WriteServ(user->fd,"254 %s :I have %d clients and 0 servers",user->nick,usercnt());
4022 }
4023
4024 void handle_admin(char **parameters, int pcnt, userrec *user)
4025 {
4026         WriteServ(user->fd,"256 %s :Administrative info for %s",user->nick,ServerName);
4027         WriteServ(user->fd,"257 %s :Name     - %s",user->nick,AdminName);
4028         WriteServ(user->fd,"258 %s :Nickname - %s",user->nick,AdminNick);
4029         WriteServ(user->fd,"258 %s :E-Mail   - %s",user->nick,AdminEmail);
4030 }
4031
4032 void ShowMOTD(userrec *user)
4033 {
4034         if (!MOTD.size())
4035         {
4036                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
4037                 return;
4038         }
4039         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
4040         for (int i = 0; i != MOTD.size(); i++)
4041         {
4042                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
4043         }
4044         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
4045 }
4046
4047 void ShowRULES(userrec *user)
4048 {
4049         if (!RULES.size())
4050         {
4051                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
4052                 return;
4053         }
4054         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
4055         for (int i = 0; i != RULES.size(); i++)
4056         {
4057                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
4058         }
4059         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
4060 }
4061
4062 /* shows the message of the day, and any other on-logon stuff */
4063 void ConnectUser(userrec *user)
4064 {
4065         user->registered = 7;
4066         user->idle_lastmsg = time(NULL);
4067         log(DEBUG,"ConnectUser: %s",user->nick);
4068
4069         if (strcmp(Passwd(user),"") && (!user->haspassed))
4070         {
4071                 kill_link(user,"Invalid password");
4072                 return;
4073         }
4074         if (IsDenied(user))
4075         {
4076                 kill_link(user,"Unauthorised connection");
4077                 return;
4078         }
4079
4080         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
4081         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
4082         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
4083         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
4084         WriteServ(user->fd,"004 %s :%s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
4085         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);
4086         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);
4087         ShowMOTD(user);
4088         FOREACH_MOD OnUserConnect(user);
4089         WriteOpers("*** Client connecting on port %d: %s!%s@%s",user->port,user->nick,user->ident,user->host);
4090 }
4091
4092 void handle_version(char **parameters, int pcnt, userrec *user)
4093 {
4094         WriteServ(user->fd,"351 %s :%s %s %s :%s",user->nick,VERSION,"$Id$",ServerName,SYSTEM);
4095 }
4096
4097 void handle_ping(char **parameters, int pcnt, userrec *user)
4098 {
4099         WriteServ(user->fd,"PONG %s :%s",ServerName,parameters[0]);
4100 }
4101
4102 void handle_pong(char **parameters, int pcnt, userrec *user)
4103 {
4104         // set the user as alive so they survive to next ping
4105         user->lastping = 1;
4106 }
4107
4108 void handle_motd(char **parameters, int pcnt, userrec *user)
4109 {
4110         ShowMOTD(user);
4111 }
4112
4113 void handle_rules(char **parameters, int pcnt, userrec *user)
4114 {
4115         ShowRULES(user);
4116 }
4117
4118 void handle_user(char **parameters, int pcnt, userrec *user)
4119 {
4120         if (user->registered < 3)
4121         {
4122                 if (isident(parameters[0]) == 0) {
4123                         // This kinda Sucks, According to the RFC thou, its either this,
4124                         // or "You have already registered" :p -- Craig
4125                         WriteServ(user->fd,"461 %s USER :Not enough parameters",user->nick);
4126                 }
4127                 else {
4128                         WriteServ(user->fd,"NOTICE Auth :No ident response, ident prefixed with ~");
4129                         strcpy(user->ident,"~"); /* we arent checking ident... but these days why bother anyway? */
4130                         strncat(user->ident,parameters[0],IDENTMAX);
4131                         strncpy(user->fullname,parameters[3],128);
4132                         user->registered = (user->registered | 1);
4133                 }
4134         }
4135         else
4136         {
4137                 WriteServ(user->fd,"462 %s :You may not reregister",user->nick);
4138                 return;
4139         }
4140         /* parameters 2 and 3 are local and remote hosts, ignored when sent by client connection */
4141         if (user->registered == 3)
4142         {
4143                 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
4144                 ConnectUser(user);
4145         }
4146 }
4147
4148 void handle_userhost(char **parameters, int pcnt, userrec *user)
4149 {
4150         char Return[MAXBUF],junk[MAXBUF];
4151         sprintf(Return,"302 %s :",user->nick);
4152         for (int i = 0; i < pcnt; i++)
4153         {
4154                 userrec *u = Find(parameters[i]);
4155                 if (u)
4156                 {
4157                         if (strchr(u->modes,'o'))
4158                         {
4159                                 sprintf(junk,"%s*=+%s@%s ",u->nick,u->ident,u->host);
4160                                 strcat(Return,junk);
4161                         }
4162                         else
4163                         {
4164                                 sprintf(junk,"%s=+%s@%s ",u->nick,u->ident,u->host);
4165                                 strcat(Return,junk);
4166                         }
4167                 }
4168         }
4169         WriteServ(user->fd,Return);
4170 }
4171
4172
4173 void handle_ison(char **parameters, int pcnt, userrec *user)
4174 {
4175         char Return[MAXBUF];
4176         sprintf(Return,"303 %s :",user->nick);
4177         for (int i = 0; i < pcnt; i++)
4178         {
4179                 userrec *u = Find(parameters[i]);
4180                 if (u)
4181                 {
4182                         strcat(Return,u->nick);
4183                         strcat(Return," ");
4184                 }
4185         }
4186         WriteServ(user->fd,Return);
4187 }
4188
4189
4190 void handle_away(char **parameters, int pcnt, userrec *user)
4191 {
4192         if (pcnt)
4193         {
4194                 strcpy(user->awaymsg,parameters[0]);
4195                 WriteServ(user->fd,"306 %s :You have been marked as being away",user->nick);
4196         }
4197         else
4198         {
4199                 strcpy(user->awaymsg,"");
4200                 WriteServ(user->fd,"305 %s :You are no longer marked as being away",user->nick);
4201         }
4202 }
4203
4204 void handle_whowas(char **parameters, int pcnt, userrec* user)
4205 {
4206         user_hash::iterator i = whowas.find(parameters[0]);
4207
4208         if (i == whowas.end())
4209         {
4210                 WriteServ(user->fd,"406 %s %s :There was no such nickname",user->nick,parameters[0]);
4211                 WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
4212         }
4213         else
4214         {
4215                 time_t rawtime = i->second->signon;
4216                 tm *timeinfo;
4217                 char b[MAXBUF];
4218
4219                 timeinfo = localtime(&rawtime);
4220                 strcpy(b,asctime(timeinfo));
4221                 b[strlen(b)-1] = '\0';
4222
4223                 WriteServ(user->fd,"314 %s %s %s %s * :%s",user->nick,i->second->nick,i->second->ident,i->second->dhost,i->second->fullname);
4224                 WriteServ(user->fd,"312 %s %s %s :%s",user->nick,i->second->nick,i->second->server,b);
4225                 WriteServ(user->fd,"369 %s %s :End of WHOWAS",user->nick,parameters[0]);
4226         }
4227
4228 }
4229
4230 void handle_trace(char **parameters, int pcnt, userrec *user)
4231 {
4232         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
4233         {
4234                 if (i->second)
4235                 {
4236                         if (isnick(i->second->nick))
4237                         {
4238                                 if (strchr(i->second->modes,'o'))
4239                                 {
4240                                         WriteServ(user->fd,"205 %s :Oper 0 %s",user->nick,i->second->nick);
4241                                 }
4242                                 else
4243                                 {
4244                                         WriteServ(user->fd,"204 %s :User 0 %s",user->nick,i->second->nick);
4245                                 }
4246                         }
4247                         else
4248                         {
4249                                 WriteServ(user->fd,"203 %s :???? 0 [%s]",user->nick,i->second->host);
4250                         }
4251                 }
4252         }
4253 }
4254
4255 void handle_modules(char **parameters, int pcnt, userrec *user)
4256 {
4257         for (int i = 0; i < module_names.size(); i++)
4258         {
4259                         Version V = modules[i]->GetVersion();
4260                         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());
4261         }
4262 }
4263
4264 void handle_stats(char **parameters, int pcnt, userrec *user)
4265 {
4266         if (pcnt != 1)
4267         {
4268                 return;
4269         }
4270         if (strlen(parameters[0])>1)
4271         {
4272                 /* make the stats query 1 character long */
4273                 parameters[0][1] = '\0';
4274         }
4275
4276         /* stats m (list number of times each command has been used, plus bytecount) */
4277         if (!strcasecmp(parameters[0],"m"))
4278         {
4279                 for (int i = 0; i < cmdlist.size(); i++)
4280                 {
4281                         if (cmdlist[i].handler_function)
4282                         {
4283                                 if (cmdlist[i].use_count)
4284                                 {
4285                                         /* RPL_STATSCOMMANDS */
4286                                         WriteServ(user->fd,"212 %s %s %d %d",user->nick,cmdlist[i].command,cmdlist[i].use_count,cmdlist[i].total_bytes);
4287                                 }
4288                         }
4289                 }
4290
4291         }
4292
4293         /* stats z (debug and memory info) */
4294         if (!strcasecmp(parameters[0],"z"))
4295         {
4296                 WriteServ(user->fd,"249 %s :Users(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,clientlist.size(),clientlist.size()*sizeof(userrec),clientlist.bucket_count());
4297                 WriteServ(user->fd,"249 %s :Channels(HASH_MAP) %d (%d bytes, %d buckets)",user->nick,chanlist.size(),chanlist.size()*sizeof(chanrec),chanlist.bucket_count());
4298                 WriteServ(user->fd,"249 %s :Commands(VECTOR) %d (%d bytes)",user->nick,cmdlist.size(),cmdlist.size()*sizeof(command_t));
4299                 WriteServ(user->fd,"249 %s :MOTD(VECTOR) %d, RULES(VECTOR) %d",user->nick,MOTD.size(),RULES.size());
4300                 WriteServ(user->fd,"249 %s :address_cache(HASH_MAP) %d (%d buckets)",user->nick,IP.size(),IP.bucket_count());
4301                 WriteServ(user->fd,"249 %s :Modules(VECTOR) %d (%d)",user->nick,modules.size(),modules.size()*sizeof(Module));
4302                 WriteServ(user->fd,"249 %s :ClassFactories(VECTOR) %d (%d)",user->nick,factory.size(),factory.size()*sizeof(ircd_module));
4303                 WriteServ(user->fd,"249 %s :Ports(STATIC_ARRAY) %d",user->nick,boundPortCount);
4304         }
4305
4306         /* stats o */
4307         if (!strcasecmp(parameters[0],"o"))
4308         {
4309                 for (int i = 0; i < ConfValueEnum("oper"); i++)
4310                 {
4311                         char LoginName[MAXBUF];
4312                         char HostName[MAXBUF];
4313                         char OperType[MAXBUF];
4314                         ConfValue("oper","name",i,LoginName);
4315                         ConfValue("oper","host",i,HostName);
4316                         ConfValue("oper","type",i,OperType);
4317                         WriteServ(user->fd,"243 %s O %s * %s %s 0",user->nick,HostName,LoginName,OperType);
4318                 }
4319         }
4320
4321         /* stats l (show user I/O stats) */
4322         if (!strcasecmp(parameters[0],"l"))
4323         {
4324                 WriteServ(user->fd,"211 %s :server:port nick bytes_in cmds_in bytes_out cmds_out",user->nick);
4325                 for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
4326                 {
4327                         if (isnick(i->second->nick))
4328                         {
4329                                 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);
4330                         }
4331                         else
4332                         {
4333                                 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);
4334                         }
4335
4336                 }
4337         }
4338
4339         /* stats u (show server uptime) */
4340         if (!strcasecmp(parameters[0],"u"))
4341         {
4342                 time_t current_time = 0;
4343                 current_time = time(NULL);
4344                 time_t server_uptime = current_time - startup_time;
4345                 struct tm* stime;
4346                 stime = gmtime(&server_uptime);
4347                 /* i dont know who the hell would have an ircd running for over a year nonstop, but
4348                  * Craig suggested this, and it seemed a good idea so in it went */
4349                 if (stime->tm_year > 70)
4350                 {
4351                         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);
4352                 }
4353                 else
4354                 {
4355                         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);
4356                 }
4357         }
4358
4359         WriteServ(user->fd,"219 %s %s :End of /STATS report",user->nick,parameters[0]);
4360         WriteOpers("*** Notice: Stats '%s' requested by %s (%s@%s)",parameters[0],user->nick,user->ident,user->host);
4361
4362 }
4363
4364 void handle_connect(char **parameters, int pcnt, userrec *user)
4365 {
4366         char Link_ServerName[1024];
4367         char Link_IPAddr[1024];
4368         char Link_Port[1024];
4369         char Link_Pass[1024];
4370         int LinkPort;
4371         bool found = false;
4372
4373         for (int i = 0; i < ConfValueEnum("link"); i++)
4374         {
4375                 ConfValue("link","name",i,Link_ServerName);
4376                 ConfValue("link","ipaddr",i,Link_IPAddr);
4377                 ConfValue("link","port",i,Link_Port);
4378                 ConfValue("link","sendpass",i,Link_Pass);
4379                 log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
4380                 LinkPort = atoi(Link_Port);
4381                 if (match(Link_ServerName,parameters[0])) {
4382                         found = true;
4383                 }
4384         }
4385
4386         if (!found) {
4387                 WriteServ(user->fd,"NOTICE %s :*** Failed to connect to %s: No servers matching this pattern are configured for linking.",user->nick,parameters[0]);
4388                 return;
4389         }
4390
4391         // TODO: Perform a check here to stop a server being linked twice!
4392
4393         WriteServ(user->fd,"NOTICE %s :*** Connecting to %s (%s) port %s...",user->nick,Link_ServerName,Link_IPAddr,Link_Port);
4394
4395         if (me[defaultRoute])
4396         {
4397
4398                 // at this point parameters[0] is an ip in a string.
4399                 // TODO: Look this up from the <link> blocks instead!
4400                 for (int j = 0; j < 255; j++) {
4401                         if (servers[j] == NULL) {
4402                                 servers[j] = new serverrec;
4403                                 strcpy(servers[j]->internal_addr,Link_IPAddr);
4404                                 strcpy(servers[j]->name,Link_ServerName);
4405                                 log(DEBUG,"Allocated new serverrec");
4406                                 if (!me[defaultRoute]->BeginLink(Link_IPAddr,LinkPort,Link_Pass))
4407                                 {
4408                                         WriteServ(user->fd,"NOTICE %s :*** Failed to send auth packet to %s!",user->nick,Link_IPAddr);
4409                                 }
4410                                 return;
4411                         }
4412                 }
4413                 WriteServ(user->fd,"NOTICE %s :*** Failed to create server record for address %s!",user->nick,Link_IPAddr);
4414         }
4415         else
4416         {
4417                 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);
4418         }
4419 }
4420
4421 void handle_squit(char **parameters, int pcnt, userrec *user)
4422 {
4423         // send out an squit across the mesh and then clear the server list (for local squit)
4424 }
4425
4426 void handle_oper(char **parameters, int pcnt, userrec *user)
4427 {
4428         char LoginName[MAXBUF];
4429         char Password[MAXBUF];
4430         char OperType[MAXBUF];
4431         char TypeName[MAXBUF];
4432         char Hostname[MAXBUF];
4433         int i,j;
4434
4435         for (i = 0; i < ConfValueEnum("oper"); i++)
4436         {
4437                 ConfValue("oper","name",i,LoginName);
4438                 ConfValue("oper","password",i,Password);
4439                 if ((!strcmp(LoginName,parameters[0])) && (!strcmp(Password,parameters[1])))
4440                 {
4441                         /* correct oper credentials */
4442                         ConfValue("oper","type",i,OperType);
4443                         WriteOpers("*** %s (%s@%s) is now an IRC operator of type %s",user->nick,user->ident,user->host,OperType);
4444                         WriteServ(user->fd,"381 %s :You are now an IRC operator of type %s",user->nick,OperType);
4445                         WriteServ(user->fd,"MODE %s :+o",user->nick);
4446                         for (j =0; j < ConfValueEnum("type"); j++)
4447                         {
4448                                 ConfValue("type","name",j,TypeName);
4449                                 if (!strcmp(TypeName,OperType))
4450                                 {
4451                                         /* found this oper's opertype */
4452                                         ConfValue("type","host",j,Hostname);
4453                                         strncpy(user->dhost,Hostname,256);
4454                                 }
4455                         }
4456                         if (!strchr(user->modes,'o'))
4457                         {
4458                                 strcat(user->modes,"o");
4459                         }
4460                         FOREACH_MOD OnOper(user);
4461                         return;
4462                 }
4463         }
4464         /* no such oper */
4465         WriteServ(user->fd,"491 %s :Invalid oper credentials",user->nick);
4466         WriteOpers("*** WARNING! Failed oper attempt by %s!%s@%s!",user->nick,user->ident,user->host);
4467 }
4468
4469 void handle_nick(char **parameters, int pcnt, userrec *user)
4470 {
4471         if (pcnt < 1)
4472         {
4473                 log(DEBUG,"not enough params for handle_nick");
4474                 return;
4475         }
4476         if (!parameters[0])
4477         {
4478                 log(DEBUG,"invalid parameter passed to handle_nick");
4479                 return;
4480         }
4481         if (!strlen(parameters[0]))
4482         {
4483                 log(DEBUG,"zero length new nick passed to handle_nick");
4484                 return;
4485         }
4486         if (!user)
4487         {
4488                 log(DEBUG,"invalid user passed to handle_nick");
4489                 return;
4490         }
4491         if (!user->nick)
4492         {
4493                 log(DEBUG,"invalid old nick passed to handle_nick");
4494                 return;
4495         }
4496         if (!strcasecmp(user->nick,parameters[0]))
4497         {
4498                 log(DEBUG,"old nick is new nick, skipping");
4499                 return;
4500         }
4501         else
4502         {
4503                 if (strlen(parameters[0]) > 1)
4504                 {
4505                         if (parameters[0][0] == ':')
4506                         {
4507                                 *parameters[0]++;
4508                         }
4509                 }
4510                 if ((Find(parameters[0])) && (Find(parameters[0]) != user))
4511                 {
4512                         WriteServ(user->fd,"433 %s %s :Nickname is already in use.",user->nick,parameters[0]);
4513                         return;
4514                 }
4515         }
4516         if (isnick(parameters[0]) == 0)
4517         {
4518                 WriteServ(user->fd,"432 %s %s :Erroneous Nickname",user->nick,parameters[0]);
4519                 return;
4520         }
4521
4522         if (user->registered == 7)
4523         {
4524                 WriteCommon(user,"NICK %s",parameters[0]);
4525         }
4526
4527         /* change the nick of the user in the users_hash */
4528         user = ReHashNick(user->nick, parameters[0]);
4529         /* actually change the nick within the record */
4530         if (!user) return;
4531         if (!user->nick) return;
4532
4533         strncpy(user->nick, parameters[0],NICKMAX);
4534
4535         log(DEBUG,"new nick set: %s",user->nick);
4536
4537         if (user->registered < 3)
4538                 user->registered = (user->registered | 2);
4539         if (user->registered == 3)
4540         {
4541                 /* user is registered now, bit 0 = USER command, bit 1 = sent a NICK command */
4542                 ConnectUser(user);
4543         }
4544         log(DEBUG,"exit nickchange: %s",user->nick);
4545 }
4546
4547 int process_parameters(char **command_p,char *parameters)
4548 {
4549         int i = 0;
4550         int j = 0;
4551         int q = 0;
4552         q = strlen(parameters);
4553         if (!q)
4554         {
4555                 /* no parameters, command_p invalid! */
4556                 return 0;
4557         }
4558         if (parameters[0] == ':')
4559         {
4560                 command_p[0] = parameters+1;
4561                 return 1;
4562         }
4563         if (q)
4564         {
4565                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
4566                 {
4567                         /* only one parameter */
4568                         command_p[0] = parameters;
4569                         if (parameters[0] == ':')
4570                         {
4571                                 if (strchr(parameters,' ') != NULL)
4572                                 {
4573                                         command_p[0]++;
4574                                 }
4575                         }
4576                         return 1;
4577                 }
4578         }
4579         command_p[j++] = parameters;
4580         for (i = 0; i <= q; i++)
4581         {
4582                 if (parameters[i] == ' ')
4583                 {
4584                         command_p[j++] = parameters+i+1;
4585                         parameters[i] = '\0';
4586                         if (command_p[j-1][0] == ':')
4587                         {
4588                                 *command_p[j-1]++; /* remove dodgy ":" */
4589                                 break;
4590                                 /* parameter like this marks end of the sequence */
4591                         }
4592                 }
4593         }
4594         return j; /* returns total number of items in the list */
4595 }
4596
4597 void process_command(userrec *user, char* cmd)
4598 {
4599         char *parameters;
4600         char *command;
4601         char *command_p[127];
4602         char p[MAXBUF], temp[MAXBUF];
4603         int i, j, items, cmd_found;
4604
4605         for (int i = 0; i < 127; i++)
4606                 command_p[i] = NULL;
4607
4608         if (!user)
4609         {
4610                 return;
4611         }
4612         if (!cmd)
4613         {
4614                 return;
4615         }
4616         if (!strcmp(cmd,""))
4617         {
4618                 return;
4619         }
4620
4621         int total_params = 0;
4622         for (int q = 0; q < strlen(cmd); q++)
4623         {
4624                 if (cmd[q] == ' ')
4625                         total_params++;
4626         }
4627
4628         // another phidjit bug...
4629         if (total_params > 126)
4630         {
4631                 kill_link(user,"Protocol violation");
4632                 return;
4633         }
4634
4635         strcpy(temp,cmd);
4636
4637         string tmp = cmd;
4638         FOREACH_MOD OnServerRaw(tmp,true);
4639         const char* cmd2 = tmp.c_str();
4640         snprintf(cmd,512,"%s",cmd2);
4641
4642         if (!strchr(cmd,' '))
4643         {
4644                 /* no parameters, lets skip the formalities and not chop up
4645                  * the string */
4646                 log(DEBUG,"About to preprocess command with no params");
4647                 items = 0;
4648                 command_p[0] = NULL;
4649                 parameters = NULL;
4650                 for (int i = 0; i <= strlen(cmd); i++)
4651                 {
4652                         cmd[i] = toupper(cmd[i]);
4653                 }
4654                 log(DEBUG,"Preprocess done");
4655         }
4656         else
4657         {
4658                 strcpy(cmd,"");
4659                 j = 0;
4660                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
4661                 for (i = 0; i < strlen(temp); i++)
4662                 {
4663                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
4664                         {
4665                                 cmd[j++] = temp[i];
4666                                 cmd[j] = 0;
4667                         }
4668                 }
4669                 /* split the full string into a command plus parameters */
4670                 parameters = p;
4671                 strcpy(p," ");
4672                 command = cmd;
4673                 if (strchr(cmd,' '))
4674                 {
4675                         for (i = 0; i <= strlen(cmd); i++)
4676                         {
4677                                 /* capitalise the command ONLY, leave params intact */
4678                                 cmd[i] = toupper(cmd[i]);
4679                                 /* are we nearly there yet?! :P */
4680                                 if (cmd[i] == ' ')
4681                                 {
4682                                         command = cmd;
4683                                         parameters = cmd+i+1;
4684                                         cmd[i] = '\0';
4685                                         break;
4686                                 }
4687                         }
4688                 }
4689                 else
4690                 {
4691                         for (i = 0; i <= strlen(cmd); i++)
4692                         {
4693                                 cmd[i] = toupper(cmd[i]);
4694                         }
4695                 }
4696
4697         }
4698
4699         cmd_found = 0;
4700
4701         if (strlen(command)>MAXCOMMAND)
4702         {
4703                 kill_link(user,"Protocol violation");
4704                 return;
4705         }
4706
4707         for (int x = 0; x < strlen(command); x++)
4708         {
4709                 if ((command[x] < 'A') || (command[x] > 'Z'))
4710                 {
4711                         kill_link(user,"Protocol violation");
4712                         return;
4713                 }
4714         }
4715
4716         for (i = 0; i != cmdlist.size(); i++)
4717         {
4718                 if (strcmp(cmdlist[i].command,""))
4719                 {
4720                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
4721                         {
4722                                 log(DEBUG,"Found matching command");
4723
4724                                 if (parameters)
4725                                 {
4726                                         if (strcmp(parameters,""))
4727                                         {
4728                                                 items = process_parameters(command_p,parameters);
4729                                         }
4730                                         else
4731                                         {
4732                                                 items = 0;
4733                                                 command_p[0] = NULL;
4734                                         }
4735                                 }
4736                                 else
4737                                 {
4738                                         items = 0;
4739                                         command_p[0] = NULL;
4740                                 }
4741
4742                                 if (user)
4743                                 {
4744                                         log(DEBUG,"Processing command");
4745
4746                                         /* activity resets the ping pending timer */
4747                                         user->nping = time(NULL) + 120;
4748                                         if ((items) < cmdlist[i].min_params)
4749                                         {
4750                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
4751                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
4752                                                 return;
4753                                         }
4754                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
4755                                         {
4756                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
4757                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
4758                                                 cmd_found = 1;
4759                                                 return;
4760                                         }
4761                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
4762                                          * deny command! */
4763                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
4764                                         {
4765                                                 if ((!isnick(user->nick)) || (user->registered != 7))
4766                                                 {
4767                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
4768                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
4769                                                         return;
4770                                                 }
4771                                         }
4772                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
4773                                         {
4774                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
4775                                                 if (cmdlist[i].handler_function)
4776                                                 {
4777                                                         /* ikky /stats counters */
4778                                                         if (temp)
4779                                                         {
4780                                                                 if (user)
4781                                                                 {
4782                                                                         user->bytes_in += strlen(temp);
4783                                                                         user->cmds_in++;
4784                                                                 }
4785                                                                 cmdlist[i].use_count++;
4786                                                                 cmdlist[i].total_bytes+=strlen(temp);
4787                                                         }
4788
4789                                                         /* WARNING: nothing may come after the
4790                                                          * command handler call, as the handler
4791                                                          * may free the user structure! */
4792
4793                                                         cmdlist[i].handler_function(command_p,items,user);
4794                                                 }
4795                                                 return;
4796                                         }
4797                                         else
4798                                         {
4799                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
4800                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
4801                                                 return;
4802                                         }
4803                                 }
4804                                 cmd_found = 1;
4805                         }
4806                 }
4807         }
4808         if ((!cmd_found) && (user))
4809         {
4810                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
4811                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
4812         }
4813 }
4814
4815
4816 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
4817 {
4818         command_t comm;
4819         /* create the command and push it onto the table */
4820         strcpy(comm.command,cmd);
4821         comm.handler_function = f;
4822         comm.flags_needed = flags;
4823         comm.min_params = minparams;
4824         comm.use_count = 0;
4825         comm.total_bytes = 0;
4826         cmdlist.push_back(comm);
4827         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
4828 }
4829
4830 void SetupCommandTable(void)
4831 {
4832   createcommand("USER",handle_user,0,4);
4833   createcommand("NICK",handle_nick,0,1);
4834   createcommand("QUIT",handle_quit,0,0);
4835   createcommand("VERSION",handle_version,0,0);
4836   createcommand("PING",handle_ping,0,1);
4837   createcommand("PONG",handle_pong,0,1);
4838   createcommand("ADMIN",handle_admin,0,0);
4839   createcommand("PRIVMSG",handle_privmsg,0,2);
4840   createcommand("INFO",handle_info,0,0);
4841   createcommand("TIME",handle_time,0,0);
4842   createcommand("WHOIS",handle_whois,0,1);
4843   createcommand("WALLOPS",handle_wallops,'o',1);
4844   createcommand("NOTICE",handle_notice,0,2);
4845   createcommand("JOIN",handle_join,0,1);
4846   createcommand("NAMES",handle_names,0,1);
4847   createcommand("PART",handle_part,0,1);
4848   createcommand("KICK",handle_kick,0,2);
4849   createcommand("MODE",handle_mode,0,1);
4850   createcommand("TOPIC",handle_topic,0,1);
4851   createcommand("WHO",handle_who,0,1);
4852   createcommand("MOTD",handle_motd,0,0);
4853   createcommand("RULES",handle_join,0,0);
4854   createcommand("OPER",handle_oper,0,2);
4855   createcommand("LIST",handle_list,0,0);
4856   createcommand("DIE",handle_die,'o',1);
4857   createcommand("RESTART",handle_restart,'o',1);
4858   createcommand("KILL",handle_kill,'o',2);
4859   createcommand("REHASH",handle_rehash,'o',0);
4860   createcommand("LUSERS",handle_lusers,0,0);
4861   createcommand("STATS",handle_stats,0,1);
4862   createcommand("USERHOST",handle_userhost,0,1);
4863   createcommand("AWAY",handle_away,0,0);
4864   createcommand("ISON",handle_ison,0,0);
4865   createcommand("SUMMON",handle_summon,0,0);
4866   createcommand("USERS",handle_users,0,0);
4867   createcommand("INVITE",handle_invite,0,2);
4868   createcommand("PASS",handle_pass,0,1);
4869   createcommand("TRACE",handle_trace,'o',0);
4870   createcommand("WHOWAS",handle_whowas,0,1);
4871   createcommand("CONNECT",handle_connect,'o',1);
4872   createcommand("SQUIT",handle_squit,'o',1);
4873   createcommand("MODULES",handle_modules,'o',0);
4874 }
4875
4876 void process_buffer(userrec *user)
4877 {
4878         if (!user)
4879         {
4880                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
4881                 return;
4882         }
4883         char cmd[MAXBUF];
4884         int i;
4885         if (!user->inbuf)
4886         {
4887                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
4888                 return;
4889         }
4890         if (!strcmp(user->inbuf,""))
4891         {
4892                 return;
4893         }
4894         strncpy(cmd,user->inbuf,MAXBUF);
4895         if (!strcmp(cmd,""))
4896         {
4897                 return;
4898         }
4899         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
4900         {
4901                 cmd[strlen(cmd)-1] = '\0';
4902         }
4903         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
4904         {
4905                 cmd[strlen(cmd)-1] = '\0';
4906         }
4907         strcpy(user->inbuf,"");
4908         if (!strcmp(cmd,""))
4909         {
4910                 return;
4911         }
4912         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
4913         tidystring(cmd);
4914         if ((user) && (cmd))
4915         {
4916                 process_command(user,cmd);
4917         }
4918 }
4919
4920 void process_restricted_commands(char token,char* params,serverrec* source,serverrec* reply, char* udp_host,int udp_port)
4921 {
4922         WriteOpers("Secure-UDP-Channel: Token='%c', Params='%s'",token,params);
4923 }
4924
4925
4926 void handle_link_packet(long theirkey, char* udp_msg, char* udp_host, int udp_port, serverrec *serv)
4927 {
4928         char response[10240];
4929         char token = udp_msg[0];
4930         char* params = udp_msg + 2;
4931         char finalparam[1024];
4932         strcpy(finalparam," :xxxx");
4933         if (strstr(params," :")) {
4934                 strncpy(finalparam,strstr(params," :"),1024);
4935         }
4936         if (token == 'S') {
4937                 // S test.chatspike.net password :ChatSpike InspIRCd test server
4938                 char* servername = strtok(params," ");
4939                 char* password = strtok(NULL," ");
4940                 char* serverdesc = finalparam+2;
4941                 WriteOpers("CONNECT from %s (%s)",servername,udp_host,password,serverdesc);
4942
4943
4944                 char Link_ServerName[1024];
4945                 char Link_IPAddr[1024];
4946                 char Link_Port[1024];
4947                 char Link_Pass[1024];
4948                 char Link_SendPass[1024];
4949                 int LinkPort = 0;
4950
4951                 // search for a corresponding <link> block in the config files
4952                 for (int i = 0; i < ConfValueEnum("link"); i++)
4953                 {
4954                         ConfValue("link","name",i,Link_ServerName);
4955                         ConfValue("link","ipaddr",i,Link_IPAddr);
4956                         ConfValue("link","port",i,Link_Port);
4957                         ConfValue("link","recvpass",i,Link_Pass);
4958                         ConfValue("link","sendpass",i,Link_SendPass);
4959                         log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
4960                         LinkPort = atoi(Link_Port);
4961                         if (!strcasecmp(Link_ServerName,servername)) {
4962                                 if (!strcasecmp(Link_IPAddr,udp_host)) {
4963                                         if (LinkPort == udp_port) {
4964                                                 // we have a matching link line -
4965                                                 // send a 'diminutive' server message back...
4966                                                 snprintf(response,10240,"s %s %s :%s",ServerName,Link_SendPass,ServerDesc);
4967                                                 serv->SendPacket(response,udp_host,udp_port,0);
4968                                                 WriteOpers("CONNECT from %s accepted, authenticating",servername);
4969                                                 for (int j = 0; j < 255; j++) {
4970                                                         if (servers[j] == NULL) {
4971                                                                 servers[j] = new serverrec;
4972                                                                 strcpy(servers[j]->internal_addr,udp_host);
4973                                                                 strcpy(servers[j]->name,servername);
4974                                                                 // create a server record for this server
4975                                                                 snprintf(response,10240,"O %d",MyKey);
4976                                                                 serv->SendPacket(response,udp_host,udp_port,0);
4977                                                                 return;
4978                                                         }
4979                                                 }
4980                                                 WriteOpers("Internal error connecting to %s, failed to create server record!",servername);
4981                                                 return;
4982                                         }
4983                                         else {
4984                                                 log(DEBUG,"Port numbers '%d' and '%d' don't match",LinkPort,udp_port);
4985                                         }
4986                                 }
4987                                 else {
4988                                         log(DEBUG,"IP Addresses '%s' and '%s' don't match",Link_IPAddr,udp_host);
4989                                 }
4990                         }
4991                         else {
4992                                 log(DEBUG,"Server names '%s' and '%s' don't match",Link_ServerName,servername);
4993                         }
4994                 }
4995                 serv->SendPacket("E :Access is denied (no matching link block)",udp_host,udp_port,0);
4996                 WriteOpers("CONNECT from %s denied, no matching link block",servername);
4997                 return;
4998         }
4999         else
5000         if (token == 'O') {
5001                 // if this is received, this means the server-ip that sent it said "OK" to credentials.
5002                 // only when a server says this do we exchange keys. The server MUST have an entry in the servers
5003                 // array, which is only added by an 'S' packet or BeginLink().
5004                 for (int i = 0; i < 255; i++) {
5005                         if (servers[i] != NULL) {
5006                                 if (!strcasecmp(servers[i]->internal_addr,udp_host)) {
5007                                         servers[i]->key = atoi(params);
5008                                         log(DEBUG,"Key for this server is now %d",servers[i]->key);
5009                                         serv->SendPacket("Z blah blah",udp_host,udp_port,MyKey);
5010                                         return;
5011                                 }
5012                         }
5013                 }
5014                 WriteOpers("\2WARNING!\2 Server ip %s attempted a key exchange, but is not in the authentication state! Possible intrusion attempt!",udp_host);
5015         }
5016         else
5017         if (token == 's') {
5018                 // S test.chatspike.net password :ChatSpike InspIRCd test server
5019                 char* servername = strtok(params," ");
5020                 char* password = strtok(NULL," ");
5021                 char* serverdesc = finalparam+2;
5022
5023                 // TODO: we should do a check here to ensure that this server is one we recently initiated a
5024                 // link with, and didnt hear an 's' or 'E' back from yet (these are the only two valid responses
5025                 // to an 'S' command. If we didn't recently send an 'S' to this server, theyre trying to spoof
5026                 // a connect, so put out an oper alert!
5027
5028
5029
5030
5031                 // for now, just accept all, we'll fix that later.
5032                 WriteOpers("%s accepted our link credentials ",servername);
5033
5034                 char Link_ServerName[1024];
5035                 char Link_IPAddr[1024];
5036                 char Link_Port[1024];
5037                 char Link_Pass[1024];
5038                 char Link_SendPass[1024];
5039                 int LinkPort = 0;
5040
5041                 // search for a corresponding <link> block in the config files
5042                 for (int i = 0; i < ConfValueEnum("link"); i++)
5043                 {
5044                         ConfValue("link","name",i,Link_ServerName);
5045                         ConfValue("link","ipaddr",i,Link_IPAddr);
5046                         ConfValue("link","port",i,Link_Port);
5047                         ConfValue("link","recvpass",i,Link_Pass);
5048                         ConfValue("link","sendpass",i,Link_SendPass);
5049                         log(DEBUG,"(%d) Comparing against name='%s', ipaddr='%s', port='%s', recvpass='%s'",i,Link_ServerName,Link_IPAddr,Link_Port,Link_Pass);
5050                         LinkPort = atoi(Link_Port);
5051                         if (!strcasecmp(Link_ServerName,servername)) {
5052                                 if (!strcasecmp(Link_IPAddr,udp_host)) {
5053                                         if (LinkPort == udp_port) {
5054                                                 // matching link at this end too, we're all done!
5055                                                 // at this point we must begin key exchange and insert this
5056                                                 // server into our 'active' table.
5057                                                 for (int j = 0; j < 255; j++) {
5058                                                         if (servers[j] != NULL) {
5059                                                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
5060                                                                         WriteOpers("Server %s authenticated, exchanging server keys...",servername);
5061                                                                         snprintf(response,10240,"O %d",MyKey);
5062                                                                         serv->SendPacket(response,udp_host,udp_port,0);
5063                                                                         return;
5064                                                                 }
5065                                                         }
5066                                                 }
5067                                                 WriteOpers("\2WARNING!\2 %s sent us an authentication packet but we are not authenticating with this server right noe! Possible intrusion attempt!",udp_host);
5068                                                 return;
5069
5070                                         }
5071                                         else {
5072                                                 log(DEBUG,"Port numbers '%d' and '%d' don't match",LinkPort,udp_port);
5073                                         }
5074                                 }
5075                                 else {
5076                                         log(DEBUG,"IP Addresses '%s' and '%s' don't match",Link_IPAddr,udp_host);
5077                                 }
5078                         }
5079                         else {
5080                                 log(DEBUG,"Server names '%s' and '%s' don't match",Link_ServerName,servername);
5081                         }
5082                 }
5083                 serv->SendPacket("E :Access is denied (no matching link block)",udp_host,udp_port,0);
5084                 WriteOpers("CONNECT from %s denied, no matching link block",servername);
5085                 return;
5086         }
5087         else
5088         if (token == 'E') {
5089                 char* error_message = finalparam+2;
5090                 WriteOpers("ERROR from %s: %s",udp_host,error_message);
5091                 // remove this server from any lists
5092                 for (int j = 0; j < 255; j++) {
5093                         if (servers[j] != NULL) {
5094                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
5095                                         delete servers[j];
5096                                         return;
5097                                 }
5098                         }
5099                 }
5100                 return;
5101         }
5102         else {
5103
5104                 serverrec* source_server = NULL;
5105
5106                 for (int j = 0; j < 255; j++) {
5107                         if (servers[j] != NULL) {
5108                                 if (!strcasecmp(servers[j]->internal_addr,udp_host)) {
5109                                         if (servers[j]->key == theirkey) {
5110                                                 // found a valid key for this server, can process restricted stuff here
5111                                                 process_restricted_commands(token,params,servers[j],serv,udp_host,udp_port);
5112
5113                                                 return;
5114                                         }
5115                                 }
5116                         }
5117                 }
5118
5119                 log(DEBUG,"Unrecognised token or unauthenticated host in datagram from %s:%d: %c",udp_host,udp_port,token);
5120         }
5121 }
5122
5123 int reap_counter = 0;
5124
5125 int InspIRCd(void)
5126 {
5127   struct sockaddr_in client, server;
5128   char addrs[MAXBUF][255];
5129   int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
5130   socklen_t length;
5131   int count = 0, scanDetectTrigger = TRUE, showBanner = FALSE;
5132   int selectResult = 0;
5133   char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
5134   char resolvedHost[MAXBUF];
5135   fd_set selectFds;
5136   struct timeval tv;
5137
5138   log_file = fopen("ircd.log","a+");
5139   if (!log_file)
5140   {
5141         printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
5142         Exit(ERROR);
5143   }
5144
5145   log(DEBUG,"InspIRCd: startup: begin");
5146   log(DEBUG,"$Id$");
5147   if (geteuid() == 0)
5148   {
5149         printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
5150         Exit(ERROR);
5151         log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
5152   }
5153   SetupCommandTable();
5154   log(DEBUG,"InspIRCd: startup: default command table set up");
5155
5156   ReadConfig();
5157   if (strcmp(DieValue,""))
5158   {
5159         printf("WARNING: %s\n\n",DieValue);
5160         exit(0);
5161   }
5162   log(DEBUG,"InspIRCd: startup: read config");
5163
5164   int count2 = 0, count3 = 0;
5165   for (count = 0; count < ConfValueEnum("bind"); count++)
5166   {
5167         ConfValue("bind","port",count,configToken);
5168         ConfValue("bind","address",count,Addr);
5169         ConfValue("bind","type",count,Type);
5170         if (!strcmp(Type,"servers"))
5171         {
5172                 char Default[MAXBUF];
5173                 strcpy(Default,"no");
5174                 ConfValue("bind","default",count,Default);
5175                 if (strchr(Default,'y'))
5176                 {
5177                                 defaultRoute = count3;
5178                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
5179                 }
5180                 me[count3] = new serverrec(ServerName,100L,false);
5181                 me[count3]->CreateListener(Addr,atoi(configToken));
5182                 count3++;
5183         }
5184         else
5185         {
5186                 ports[count2] = atoi(configToken);
5187                 strcpy(addrs[count2],Addr);
5188                 count2++;
5189         }
5190         log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
5191   }
5192   portCount = count2;
5193   UDPportCount = count3;
5194
5195   log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
5196
5197   log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
5198
5199   printf("\n");
5200
5201   /* BugFix By Craig! :p */
5202   count2 = 0;
5203   for (count = 0; count2 < ConfValueEnum("module"); count2++)
5204   {
5205         char modfile[MAXBUF];
5206         ConfValue("module","name",count,configToken);
5207         sprintf(modfile,"%s/%s",MOD_PATH,configToken);
5208         printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
5209         log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
5210         /* If The File Doesnt exist, Trying to load it
5211          * Will Segfault the IRCd.. So, check to see if
5212          * it Exists, Before Proceeding. */
5213         if (FileExists(modfile))
5214         {
5215                 factory[count] = new ircd_module(modfile);
5216                 if (factory[count]->LastError())
5217                 {
5218                         log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
5219                         sprintf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
5220                         Exit(ERROR);
5221                 }
5222                 if (factory[count]->factory)
5223                 {
5224                         modules[count] = factory[count]->factory->CreateModule();
5225                         /* save the module and the module's classfactory, if
5226                          * this isnt done, random crashes can occur :/ */
5227                         module_names.push_back(modfile);
5228                 }
5229                 else
5230                 {
5231                         log(DEBUG,"Unable to load %s",modfile);
5232                         sprintf("Unable to load %s\nExiting...\n",modfile);
5233                         Exit(ERROR);
5234                 }
5235                 /* Increase the Count */
5236                 count++;
5237         }
5238         else
5239         {
5240                 log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
5241                 printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
5242         }
5243   }
5244   MODCOUNT = count - 1;
5245   log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
5246
5247   printf("\nInspIRCd is now running!\n");
5248
5249   startup_time = time(NULL);
5250
5251   if (nofork)
5252   {
5253         log(VERBOSE,"Not forking as -nofork was specified");
5254   }
5255   else
5256   {
5257         if (DaemonSeed() == ERROR)
5258         {
5259                 log(DEBUG,"InspIRCd: startup: can't daemonise");
5260                 printf("ERROR: could not go into daemon mode. Shutting down.\n");
5261                 Exit(ERROR);
5262         }
5263   }
5264
5265
5266   /* setup select call */
5267   FD_ZERO(&selectFds);
5268   log(DEBUG,"InspIRCd: startup: zero selects");
5269   log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
5270
5271   for (count = 0; count < portCount; count++)
5272   {
5273           if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
5274       {
5275                 log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
5276                 return(ERROR);
5277       }
5278       if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
5279       {
5280                 log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
5281       }
5282       else                      /* well we at least bound to one socket so we'll continue */
5283       {
5284                 boundPortCount++;
5285       }
5286   }
5287
5288   log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
5289
5290   /* if we didn't bind to anything then abort */
5291   if (boundPortCount == 0)
5292   {
5293      log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
5294      return (ERROR);
5295   }
5296
5297   length = sizeof (client);
5298   int flip_flop = 0, udp_port = 0;
5299   char udp_msg[MAXBUF], udp_host[MAXBUF];
5300
5301   /* main loop for multiplexing/resetting */
5302   for (;;)
5303   {
5304       /* set up select call */
5305       for (count = 0; count < boundPortCount; count++)
5306       {
5307                 FD_SET (openSockfd[count], &selectFds);
5308       }
5309
5310       /* added timeout! select was waiting forever... wank... :/ */
5311       tv.tv_usec = 0;
5312
5313       flip_flop++;
5314       reap_counter++;
5315       if (flip_flop > 20)
5316       {
5317               tv.tv_usec = 1;
5318               flip_flop = 0;
5319       }
5320
5321         vector<int>::iterator niterator;
5322
5323
5324         // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
5325         // them in a list, then reap the list every second or so.
5326         if (reap_counter>5000) {
5327                 if (fd_reap.size() > 0) {
5328                         for( int n = 0; n < fd_reap.size(); n++)
5329                         {
5330                                 Blocking(fd_reap[n]);
5331                                 close(fd_reap[n]);
5332                                 NonBlocking(fd_reap[n]);
5333                         }
5334                 }
5335                 fd_reap.clear();
5336                 reap_counter=0;
5337         }
5338
5339
5340       tv.tv_sec = 0;
5341       selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
5342
5343       for (int x = 0; x != UDPportCount; x++)
5344       {
5345            long theirkey = 0;
5346            if (me[x]->RecvPacket(udp_msg, udp_host, udp_port, theirkey))
5347            {
5348                         if (strlen(udp_msg)<1) {
5349                                 log(DEBUG,"Invalid datagram from %s:%d:%d [route%d]",udp_host,udp_port,me[x]->port,x);
5350                         }
5351                         else {
5352                                 FOREACH_MOD OnPacketReceive(udp_msg);
5353                                 // Packets must go back via the route they arrived on :)
5354                                 handle_link_packet(theirkey, udp_msg, udp_host, udp_port, me[x]);
5355                         }
5356            }
5357       }
5358
5359         for (user_hash::iterator count2 = clientlist.begin(); count2 != clientlist.end(); count2++)
5360         {
5361                 char data[MAXBUF];
5362
5363                 if (!count2->second) break;
5364
5365                 if (count2->second)
5366                 if (count2->second->fd)
5367                 {
5368                         // registration timeout -- didnt send USER/NICK/HOST in the time specified in
5369                         // their connection class.
5370                         if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
5371                         {
5372                                 log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
5373                                 kill_link(count2->second,"Registration timeout");
5374                                 break;
5375                         }
5376                         if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
5377                         {
5378                                 if (!count2->second->lastping)
5379                                 {
5380                                         log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
5381                                         kill_link(count2->second,"Ping timeout");
5382                                         break;
5383                                 }
5384                                 Write(count2->second->fd,"PING :%s",ServerName);
5385                                 log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
5386                                 count2->second->lastping = 0;
5387                                 count2->second->nping = time(NULL)+120;
5388                         }
5389
5390                         result = read(count2->second->fd, data, 1);
5391                         // result EAGAIN means nothing read
5392                         if (result == EAGAIN)
5393                         {
5394                         }
5395                         else
5396                         if (result == 0)
5397                         {
5398                                 if (count2->second)
5399                                 {
5400                                         log(DEBUG,"InspIRCd: Exited: %s",count2->second->nick);
5401                                         kill_link(count2->second,"Client exited");
5402                                         // must bail here? kill_link removes the hash, corrupting the iterator
5403                                         log(DEBUG,"Bailing from client exit");
5404                                         break;
5405                                 }
5406                         }
5407                         else if (result > 0)
5408                         {
5409                                 if (count2->second)
5410                                 {
5411
5412                                         // until the buffer is at 509 chars anything can be inserted into it.
5413                                         if ((strlen(count2->second->inbuf) < 509) && (data[0] != '\0')) {
5414                                                 strncat(count2->second->inbuf, data, result);
5415                                         }
5416
5417                                         // once you reach 509 chars, only a \r or \n can be inserted,
5418                                         // completing the line.
5419                                         if ((strlen(count2->second->inbuf) >= 509) && ((data[0] == '\r') || (data[0] == '\n'))) {
5420                                                 count2->second->inbuf[509] = '\r';
5421                                                 count2->second->inbuf[510] = '\n';
5422                                                 count2->second->inbuf[511] = '\0';
5423                                                 process_buffer(count2->second);
5424                                                 break;
5425                                         }
5426
5427                                         if (strchr(count2->second->inbuf, '\n') || strchr(count2->second->inbuf, '\r') || (strlen(count2->second->inbuf) > 509))
5428                                         {
5429                                                 /* at least one complete line is waiting to be processed */
5430                                                 if (!count2->second->fd)
5431                                                         break;
5432                                                 else
5433                                                 {
5434                                                         if (strlen(count2->second->inbuf)<512)
5435                                                         {
5436                                                                 // double check the length before processing!
5437                                                                 process_buffer(count2->second);
5438                                                         }
5439                                                         else
5440                                                         {
5441                                                                 strcpy(count2->second->inbuf,"");
5442                                                         }
5443                                                         break;
5444                                                 }
5445                                         }
5446                                 }
5447                         }
5448                 }
5449         }
5450
5451       /* select is reporting a waiting socket. Poll them all to find out which */
5452       if (selectResult > 0)
5453       {
5454         char target[MAXBUF], resolved[MAXBUF];
5455         for (count = 0; count < boundPortCount; count++)
5456         {
5457             if (FD_ISSET (openSockfd[count], &selectFds))
5458             {
5459               incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
5460
5461               address_cache::iterator iter = IP.find(client.sin_addr);
5462               bool iscached = false;
5463               if (iter == IP.end())
5464               {
5465                         /* ip isn't in cache, add it */
5466                         strncpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
5467                         if(CleanAndResolve(resolved, target) != TRUE)
5468                         {
5469                                 strncpy(resolved,target,MAXBUF);
5470                         }
5471                         /* hostname now in 'target' */
5472                         IP[client.sin_addr] = new string(resolved);
5473               /* hostname in cache */
5474               }
5475               else
5476               {
5477               /* found ip (cached) */
5478               strncpy(resolved, iter->second->c_str(), MAXBUF);
5479               iscached = true;
5480            }
5481
5482               if (incomingSockfd < 0)
5483               {
5484                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
5485                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
5486                         break;
5487               }
5488
5489               AddClient(incomingSockfd, resolved, ports[count], iscached);
5490               log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
5491               break;
5492             }
5493
5494            }
5495       }
5496   }
5497
5498   /* not reached */
5499   close (incomingSockfd);
5500 }
5501