src/inspircd.cpp

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