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 <unistd.h>
  45 #include <sched.h>
  46 #include "connection.h"
  47 #include "users.h"
  48 #include "servers.h"
  49 #include "ctables.h"
  50 #include "globals.h"
  51 #include "modules.h"
  52 #include "dynamic.h"
  53 #include "wildcard.h"
  54 #include "message.h"
  55 #include "mode.h"
  56 #include "commands.h"
  57 #include "xline.h"
  58
  59 #ifdef GCC3
  60 #define nspace __gnu_cxx
  61 #else
  62 #define nspace std
  63 #endif
  64
  65 int LogLevel = DEFAULT;
  66 char ServerName[MAXBUF];
  67 char Network[MAXBUF];
  68 char ServerDesc[MAXBUF];
  69 char AdminName[MAXBUF];
  70 char AdminEmail[MAXBUF];
  71 char AdminNick[MAXBUF];
  72 char diepass[MAXBUF];
  73 char restartpass[MAXBUF];
  74 char motd[MAXBUF];
  75 char rules[MAXBUF];
  76 char list[MAXBUF];
  77 char PrefixQuit[MAXBUF];
  78 char DieValue[MAXBUF];
  79 int debugging =  0;
  80 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  81 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  82 int DieDelay  =  5;
  83 time_t startup_time = time(NULL);
  84 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  85 extern int MaxWhoResults;
  86 time_t nb_start = 0;
  87
  88 bool AllowHalfop = true;
  89 bool AllowProtect = true;
  90 bool AllowFounder = true;
  91
  92 extern vector<Module*> modules;
  93 std::vector<std::string> module_names;
  94 extern vector<ircd_module*> factory;
  95 std::vector<int> fd_reap;
  96
  97 extern int MODCOUNT;
  98
  99 bool nofork = false;
 100
 101 namespace nspace
 102 {
 103         template<> struct nspace::hash<in_addr>
 104         {
 105                 size_t operator()(const struct in_addr &a) const
 106                 {
 107                         size_t q;
 108                         memcpy(&q,&a,sizeof(size_t));
 109                         return q;
 110                 }
 111         };
 112
 113         template<> struct nspace::hash<string>
 114         {
 115                 size_t operator()(const string &s) const
 116                 {
 117                         char a[MAXBUF];
 118                         static struct hash<const char *> strhash;
 119                         strcpy(a,s.c_str());
 120                         strlower(a);
 121                         return strhash(a);
 122                 }
 123         };
 124 }
 125
 126
 127 struct StrHashComp
 128 {
 129
 130         bool operator()(const string& s1, const string& s2) const
 131         {
 132                 char a[MAXBUF],b[MAXBUF];
 133                 strcpy(a,s1.c_str());
 134                 strcpy(b,s2.c_str());
 135                 return (strcasecmp(a,b) == 0);
 136         }
 137
 138 };
 139
 140 struct InAddr_HashComp
 141 {
 142
 143         bool operator()(const in_addr &s1, const in_addr &s2) const
 144         {
 145                 size_t q;
 146                 size_t p;
 147
 148                 memcpy(&q,&s1,sizeof(size_t));
 149                 memcpy(&p,&s2,sizeof(size_t));
 150
 151                 return (q == p);
 152         }
 153
 154 };
 155
 156
 157 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 158 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 159 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 160 typedef std::deque<command_t> command_table;
 161
 162 serverrec* me[32];
 163
 164 FILE *log_file;
 165
 166 user_hash clientlist;
 167 chan_hash chanlist;
 168 user_hash whowas;
 169 command_table cmdlist;
 170 file_cache MOTD;
 171 file_cache RULES;
 172 address_cache IP;
 173
 174 ClassVector Classes;
 175
 176 struct linger linger = { 0 };
 177 char bannerBuffer[MAXBUF];
 178 int boundPortCount = 0;
 179 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 180 int defaultRoute = 0;
 181
 182 connection C;
 183
 184 long MyKey = C.GenKey();
 185
 186 /* prototypes */
 187
 188 int has_channel(userrec *u, chanrec *c);
 189 int usercount(chanrec *c);
 190 int usercount_i(chanrec *c);
 191 void update_stats_l(int fd,int data_out);
 192 char* Passwd(userrec *user);
 193 bool IsDenied(userrec *user);
 194 void AddWhoWas(userrec* u);
 195
 196 std::vector<long> auth_cookies;
 197 std::stringstream config_f(stringstream::in | stringstream::out);
 198
 199
 200
 201 long GetRevision()
 202 {
 203         char Revision[] = "$Revision$";
 204         char *s1 = Revision;
 205         char *savept;
 206         char *v1 = strtok_r(s1," ",&savept);
 207         s1 = savept;
 208         char *v2 = strtok_r(s1," ",&savept);
 209         s1 = savept;
 210         return (long)(atof(v2)*10000);
 211 }
 212
 213
 214 std::string getservername()
 215 {
 216         return ServerName;
 217 }
 218
 219 std::string getserverdesc()
 220 {
 221         return ServerDesc;
 222 }
 223
 224 std::string getnetworkname()
 225 {
 226         return Network;
 227 }
 228
 229 std::string getadminname()
 230 {
 231         return AdminName;
 232 }
 233
 234 std::string getadminemail()
 235 {
 236         return AdminEmail;
 237 }
 238
 239 std::string getadminnick()
 240 {
 241         return AdminNick;
 242 }
 243
 244 void log(int level,char *text, ...)
 245 {
 246         char textbuffer[MAXBUF];
 247         va_list argsPtr;
 248         time_t rawtime;
 249         struct tm * timeinfo;
 250         if (level < LogLevel)
 251                 return;
 252
 253         time(&rawtime);
 254         timeinfo = localtime (&rawtime);
 255
 256         if (log_file)
 257         {
 258                 char b[MAXBUF];
 259                 va_start (argsPtr, text);
 260                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 261                 va_end(argsPtr);
 262                 strcpy(b,asctime(timeinfo));
 263                 b[strlen(b)-1] = ':';
 264                 fprintf(log_file,"%s %s\n",b,textbuffer);
 265                 if (nofork)
 266                 {
 267                         // nofork enabled? display it on terminal too
 268                         printf("%s %s\n",b,textbuffer);
 269                 }
 270         }
 271 }
 272
 273 void readfile(file_cache &F, const char* fname)
 274 {
 275         FILE* file;
 276         char linebuf[MAXBUF];
 277
 278         log(DEBUG,"readfile: loading %s",fname);
 279         F.clear();
 280         file =  fopen(fname,"r");
 281         if (file)
 282         {
 283                 while (!feof(file))
 284                 {
 285                         fgets(linebuf,sizeof(linebuf),file);
 286                         linebuf[strlen(linebuf)-1]='\0';
 287                         if (!strcmp(linebuf,""))
 288                         {
 289                                 strcpy(linebuf,"  ");
 290                         }
 291                         if (!feof(file))
 292                         {
 293                                 F.push_back(linebuf);
 294                         }
 295                 }
 296                 fclose(file);
 297         }
 298         else
 299         {
 300                 log(DEBUG,"readfile: failed to load file: %s",fname);
 301         }
 302         log(DEBUG,"readfile: loaded %s, %d lines",fname,F.size());
 303 }
 304
 305 void ReadConfig(void)
 306 {
 307         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 308         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF];
 309         ConnectClass c;
 310
 311         LoadConf(CONFIG_FILE,&config_f);
 312
 313         ConfValue("server","name",0,ServerName,&config_f);
 314         ConfValue("server","description",0,ServerDesc,&config_f);
 315         ConfValue("server","network",0,Network,&config_f);
 316         ConfValue("admin","name",0,AdminName,&config_f);
 317         ConfValue("admin","email",0,AdminEmail,&config_f);
 318         ConfValue("admin","nick",0,AdminNick,&config_f);
 319         ConfValue("files","motd",0,motd,&config_f);
 320         ConfValue("files","rules",0,rules,&config_f);
 321         ConfValue("power","diepass",0,diepass,&config_f);
 322         ConfValue("power","pause",0,pauseval,&config_f);
 323         ConfValue("power","restartpass",0,restartpass,&config_f);
 324         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 325         ConfValue("die","value",0,DieValue,&config_f);
 326         ConfValue("options","loglevel",0,dbg,&config_f);
 327         ConfValue("options","netbuffersize",0,NB,&config_f);
 328         ConfValue("options","maxwho",0,MW,&config_f);
 329         ConfValue("options","allowhalfop",0,AH,&config_f);
 330         ConfValue("options","allowprotect",0,AP,&config_f);
 331         ConfValue("options","allowfounder",0,AF,&config_f);
 332         NetBufferSize = atoi(NB);
 333         MaxWhoResults = atoi(MW);
 334         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 335         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 336         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 337         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 338         {
 339                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 340                 NetBufferSize = 10240;
 341         }
 342         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 343         {
 344                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 345                 MaxWhoResults = 128;
 346         }
 347         if (!strcmp(dbg,"debug"))
 348                 LogLevel = DEBUG;
 349         if (!strcmp(dbg,"verbose"))
 350                 LogLevel = VERBOSE;
 351         if (!strcmp(dbg,"default"))
 352                 LogLevel = DEFAULT;
 353         if (!strcmp(dbg,"sparse"))
 354                 LogLevel = SPARSE;
 355         if (!strcmp(dbg,"none"))
 356                 LogLevel = NONE;
 357         readfile(MOTD,motd);
 358         log(DEFAULT,"Reading message of the day...");
 359         readfile(RULES,rules);
 360         log(DEFAULT,"Reading connect classes...");
 361         Classes.clear();
 362         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 363         {
 364                 strcpy(Value,"");
 365                 ConfValue("connect","allow",i,Value,&config_f);
 366                 ConfValue("connect","timeout",i,timeout,&config_f);
 367                 ConfValue("connect","flood",i,flood,&config_f);
 368                 if (strcmp(Value,""))
 369                 {
 370                         strcpy(c.host,Value);
 371                         c.type = CC_ALLOW;
 372                         strcpy(Value,"");
 373                         ConfValue("connect","password",i,Value,&config_f);
 374                         strcpy(c.pass,Value);
 375                         c.registration_timeout = 90; // default is 2 minutes
 376                         c.flood = atoi(flood);
 377                         if (atoi(timeout)>0)
 378                         {
 379                                 c.registration_timeout = atoi(timeout);
 380                         }
 381                         Classes.push_back(c);
 382                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood);
 383                 }
 384                 else
 385                 {
 386                         ConfValue("connect","deny",i,Value,&config_f);
 387                         strcpy(c.host,Value);
 388                         c.type = CC_DENY;
 389                         Classes.push_back(c);
 390                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 391                 }
 392
 393         }
 394         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 395         read_xline_defaults();
 396         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 397         apply_lines();
 398         log(DEFAULT,"Done reading configuration file, InspIRCd is now running.");
 399 }
 400
 401 /* write formatted text to a socket, in same format as printf */
 402
 403 void Write(int sock,char *text, ...)
 404 {
 405         if (!text)
 406         {
 407                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 408                 return;
 409         }
 410         char textbuffer[MAXBUF];
 411         va_list argsPtr;
 412         char tb[MAXBUF];
 413
 414         va_start (argsPtr, text);
 415         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 416         va_end(argsPtr);
 417         sprintf(tb,"%s\r\n",textbuffer);
 418         chop(tb);
 419         if (sock != -1)
 420         {
 421                 write(sock,tb,strlen(tb));
 422                 update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 423         }
 424 }
 425
 426 /* write a server formatted numeric response to a single socket */
 427
 428 void WriteServ(int sock, char* text, ...)
 429 {
 430         if (!text)
 431         {
 432                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 433                 return;
 434         }
 435         char textbuffer[MAXBUF],tb[MAXBUF];
 436         va_list argsPtr;
 437         va_start (argsPtr, text);
 438
 439         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 440         va_end(argsPtr);
 441         sprintf(tb,":%s %s\r\n",ServerName,textbuffer);
 442         chop(tb);
 443         if (sock != -1)
 444         {
 445                 write(sock,tb,strlen(tb));
 446                 update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 447         }
 448 }
 449
 450 /* write text from an originating user to originating user */
 451
 452 void WriteFrom(int sock, userrec *user,char* text, ...)
 453 {
 454         if ((!text) || (!user))
 455         {
 456                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 457                 return;
 458         }
 459         char textbuffer[MAXBUF],tb[MAXBUF];
 460         va_list argsPtr;
 461         va_start (argsPtr, text);
 462
 463         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 464         va_end(argsPtr);
 465         sprintf(tb,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 466         chop(tb);
 467         if (sock != -1)
 468         {
 469                 write(sock,tb,strlen(tb));
 470                 update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 471         }
 472 }
 473
 474 /* write text to an destination user from a source user (e.g. user privmsg) */
 475
 476 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 477 {
 478         if ((!dest) || (!data))
 479         {
 480                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 481                 return;
 482         }
 483         char textbuffer[MAXBUF],tb[MAXBUF];
 484         va_list argsPtr;
 485         va_start (argsPtr, data);
 486         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 487         va_end(argsPtr);
 488         chop(tb);
 489
 490         // if no source given send it from the server.
 491         if (!source)
 492         {
 493                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 494         }
 495         else
 496         {
 497                 WriteFrom(dest->fd,source,"%s",textbuffer);
 498         }
 499 }
 500
 501 /* write formatted text from a source user to all users on a channel
 502  * including the sender (NOT for privmsg, notice etc!) */
 503
 504 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 505 {
 506         if ((!Ptr) || (!user) || (!text))
 507         {
 508                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 509                 return;
 510         }
 511         char textbuffer[MAXBUF];
 512         va_list argsPtr;
 513         va_start (argsPtr, text);
 514         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 515         va_end(argsPtr);
 516         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 517         {
 518                 if (has_channel(i->second,Ptr))
 519                 {
 520                         WriteTo(user,i->second,"%s",textbuffer);
 521                 }
 522         }
 523 }
 524
 525 /* write formatted text from a source user to all users on a channel
 526  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 527  * users on remote servers */
 528
 529 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 530 {
 531         if ((!Ptr) || (!text))
 532         {
 533                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 534                 return;
 535         }
 536         char textbuffer[MAXBUF];
 537         va_list argsPtr;
 538         va_start (argsPtr, text);
 539         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 540         va_end(argsPtr);
 541         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 542         {
 543                 if (has_channel(i->second,Ptr))
 544                 {
 545                         if (i->second->fd != -1)
 546                         {
 547                                 if (!user)
 548                                 {
 549                                         WriteServ(i->second->fd,"%s",textbuffer);
 550                                 }
 551                                 else
 552                                 {
 553                                         WriteTo(user,i->second,"%s",textbuffer);
 554                                 }
 555                         }
 556                 }
 557         }
 558 }
 559
 560
 561 void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
 562 {
 563         if ((!Ptr) || (!user) || (!text))
 564         {
 565                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 566                 return;
 567         }
 568         char textbuffer[MAXBUF];
 569         va_list argsPtr;
 570         va_start (argsPtr, text);
 571         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 572         va_end(argsPtr);
 573         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 574         {
 575                 if (i->second)
 576                 {
 577                         if (has_channel(i->second,Ptr))
 578                         {
 579                                 WriteServ(i->second->fd,"%s",textbuffer);
 580                         }
 581                 }
 582         }
 583 }
 584
 585
 586 /* write formatted text from a source user to all users on a channel except
 587  * for the sender (for privmsg etc) */
 588
 589 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 590 {
 591         if ((!Ptr) || (!user) || (!text))
 592         {
 593                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 594                 return;
 595         }
 596         char textbuffer[MAXBUF];
 597         va_list argsPtr;
 598         va_start (argsPtr, text);
 599         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 600         va_end(argsPtr);
 601
 602         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 603         {
 604                 if (i->second)
 605                 {
 606                         if (has_channel(i->second,Ptr) && (user != i->second))
 607                         {
 608                                 WriteTo(user,i->second,"%s",textbuffer);
 609                         }
 610                 }
 611         }
 612 }
 613
 614
 615 std::string GetServerDescription(char* servername)
 616 {
 617         for (int j = 0; j < 32; j++)
 618         {
 619                 if (me[j] != NULL)
 620                 {
 621                         for (int k = 0; k < me[j]->connectors.size(); k++)
 622                         {
 623                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 624                                 {
 625                                         return me[j]->connectors[k].GetDescription();
 626                                 }
 627                         }
 628                 }
 629                 return ServerDesc; // not a remote server that can be found, it must be me.
 630         }
 631 }
 632
 633
 634 /* write a formatted string to all users who share at least one common
 635  * channel, including the source user e.g. for use in NICK */
 636
 637 void WriteCommon(userrec *u, char* text, ...)
 638 {
 639         if (!u)
 640         {
 641                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 642                 return;
 643         }
 644
 645         if (u->registered != 7) {
 646                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 647                 return;
 648         }
 649
 650         char textbuffer[MAXBUF];
 651         va_list argsPtr;
 652         va_start (argsPtr, text);
 653         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 654         va_end(argsPtr);
 655
 656         WriteFrom(u->fd,u,"%s",textbuffer);
 657
 658         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 659         {
 660                 if (i->second)
 661                 {
 662                         if (common_channels(u,i->second) && (i->second != u))
 663                         {
 664                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 665                         }
 666                 }
 667         }
 668 }
 669
 670 /* write a formatted string to all users who share at least one common
 671  * channel, NOT including the source user e.g. for use in QUIT */
 672
 673 void WriteCommonExcept(userrec *u, char* text, ...)
 674 {
 675         if (!u)
 676         {
 677                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 678                 return;
 679         }
 680
 681         if (u->registered != 7) {
 682                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 683                 return;
 684         }
 685
 686         char textbuffer[MAXBUF];
 687         va_list argsPtr;
 688         va_start (argsPtr, text);
 689         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 690         va_end(argsPtr);
 691
 692         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 693         {
 694                 if (i->second)
 695                 {
 696                         if ((common_channels(u,i->second)) && (u != i->second))
 697                         {
 698                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 699                         }
 700                 }
 701         }
 702 }
 703
 704 void WriteOpers(char* text, ...)
 705 {
 706         if (!text)
 707         {
 708                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 709                 return;
 710         }
 711
 712         char textbuffer[MAXBUF];
 713         va_list argsPtr;
 714         va_start (argsPtr, text);
 715         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 716         va_end(argsPtr);
 717
 718         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 719         {
 720                 if (i->second)
 721                 {
 722                         if (strchr(i->second->modes,'o'))
 723                         {
 724                                 if (strchr(i->second->modes,'s'))
 725                                 {
 726                                         // send server notices to all with +s
 727                                         // (TODO: needs SNOMASKs)
 728                                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 729                                 }
 730                         }
 731                 }
 732         }
 733 }
 734
 735 // returns TRUE of any users on channel C occupy server 'servername'.
 736
 737 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 738 {
 739         log(DEBUG,"ChanAnyOnThisServer");
 740         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 741         {
 742                 if (has_channel(i->second,c))
 743                 {
 744                         if (!strcasecmp(i->second->server,servername))
 745                         {
 746                                 return true;
 747                         }
 748                 }
 749         }
 750         return false;
 751 }
 752
 753 // returns true if user 'u' shares any common channels with any users on server 'servername'
 754
 755 bool CommonOnThisServer(userrec* u,const char* servername)
 756 {
 757         log(DEBUG,"ChanAnyOnThisServer");
 758         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 759         {
 760                 if ((common_channels(u,i->second)) && (u != i->second))
 761                 {
 762                         if (!strcasecmp(i->second->server,servername))
 763                         {
 764                                 log(DEBUG,"%s is common to %s sharing with %s",i->second->nick,servername,u->nick);
 765                                 return true;
 766                         }
 767                 }
 768         }
 769         return false;
 770 }
 771
 772
 773 void NetSendToCommon(userrec* u, char* s)
 774 {
 775         char buffer[MAXBUF];
 776         snprintf(buffer,MAXBUF,"%s",s);
 777
 778         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 779
 780         for (int j = 0; j < 32; j++)
 781         {
 782                 if (me[j] != NULL)
 783                 {
 784                         for (int k = 0; k < me[j]->connectors.size(); k++)
 785                         {
 786                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 787                                 {
 788                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 789                                 }
 790                         }
 791                 }
 792         }
 793 }
 794
 795
 796 void NetSendToAll(char* s)
 797 {
 798         char buffer[MAXBUF];
 799         snprintf(buffer,MAXBUF,"%s",s);
 800
 801         log(DEBUG,"NetSendToAll: '%s'",s);
 802
 803         for (int j = 0; j < 32; j++)
 804         {
 805                 if (me[j] != NULL)
 806                 {
 807                         for (int k = 0; k < me[j]->connectors.size(); k++)
 808                         {
 809                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 810                         }
 811                 }
 812         }
 813 }
 814
 815 void NetSendToAllAlive(char* s)
 816 {
 817         char buffer[MAXBUF];
 818         snprintf(buffer,MAXBUF,"%s",s);
 819
 820         log(DEBUG,"NetSendToAllAlive: '%s'",s);
 821
 822         for (int j = 0; j < 32; j++)
 823         {
 824                 if (me[j] != NULL)
 825                 {
 826                         for (int k = 0; k < me[j]->connectors.size(); k++)
 827                         {
 828                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
 829                                 {
 830                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 831                                 }
 832                                 else
 833                                 {
 834                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
 835                                 }
 836                         }
 837                 }
 838         }
 839 }
 840
 841
 842 void NetSendToOne(char* target,char* s)
 843 {
 844         char buffer[MAXBUF];
 845         snprintf(buffer,MAXBUF,"%s",s);
 846
 847         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
 848
 849         for (int j = 0; j < 32; j++)
 850         {
 851                 if (me[j] != NULL)
 852                 {
 853                         for (int k = 0; k < me[j]->connectors.size(); k++)
 854                         {
 855                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
 856                                 {
 857                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 858                                 }
 859                         }
 860                 }
 861         }
 862 }
 863
 864 void NetSendToAllExcept(const char* target,char* s)
 865 {
 866         char buffer[MAXBUF];
 867         snprintf(buffer,MAXBUF,"%s",s);
 868
 869         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
 870
 871         for (int j = 0; j < 32; j++)
 872         {
 873                 if (me[j] != NULL)
 874                 {
 875                         for (int k = 0; k < me[j]->connectors.size(); k++)
 876                         {
 877                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
 878                                 {
 879                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 880                                 }
 881                         }
 882                 }
 883         }
 884 }
 885
 886
 887 void WriteMode(const char* modes, int flags, const char* text, ...)
 888 {
 889         if ((!text) || (!modes) || (!flags))
 890         {
 891                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 892                 return;
 893         }
 894
 895         char textbuffer[MAXBUF];
 896         va_list argsPtr;
 897         va_start (argsPtr, text);
 898         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 899         va_end(argsPtr);
 900
 901         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 902         {
 903                 if (i->second)
 904                 {
 905                         bool send_to_user = false;
 906
 907                         if (flags == WM_AND)
 908                         {
 909                                 send_to_user = true;
 910                                 for (int n = 0; n < strlen(modes); n++)
 911                                 {
 912                                         if (!hasumode(i->second,modes[n]))
 913                                         {
 914                                                 send_to_user = false;
 915                                                 break;
 916                                         }
 917                                 }
 918                         }
 919                         else if (flags == WM_OR)
 920                         {
 921                                 send_to_user = false;
 922                                 for (int n = 0; n < strlen(modes); n++)
 923                                 {
 924                                         if (hasumode(i->second,modes[n]))
 925                                         {
 926                                                 send_to_user = true;
 927                                                 break;
 928                                         }
 929                                 }
 930                         }
 931
 932                         if (send_to_user)
 933                         {
 934                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 935                         }
 936                 }
 937         }
 938 }
 939
 940
 941 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
 942 {
 943         if ((!text) || (!source))
 944         {
 945                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 946                 return;
 947         }
 948
 949         int i = 0;
 950         char textbuffer[MAXBUF];
 951         va_list argsPtr;
 952         va_start (argsPtr, text);
 953         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 954         va_end(argsPtr);
 955
 956         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 957         {
 958                 if (i->second)
 959                 {
 960                         if (strchr(i->second->modes,'w'))
 961                         {
 962                                 WriteTo(source,i->second,"WALLOPS %s",textbuffer);
 963                         }
 964                 }
 965         }
 966
 967         if (!local_only)
 968         {
 969                 char buffer[MAXBUF];
 970                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
 971                 NetSendToAll(buffer);
 972         }
 973 }
 974
 975 /* convert a string to lowercase. Note following special circumstances
 976  * taken from RFC 1459. Many "official" server branches still hold to this
 977  * rule so i will too;
 978  *
 979  *  Because of IRC's scandanavian origin, the characters {}| are
 980  *  considered to be the lower case equivalents of the characters []\,
 981  *  respectively. This is a critical issue when determining the
 982  *  equivalence of two nicknames.
 983  */
 984
 985 void strlower(char *n)
 986 {
 987         if (!n)
 988         {
 989                 return;
 990         }
 991         for (int i = 0; i != strlen(n); i++)
 992         {
 993                 n[i] = tolower(n[i]);
 994                 if (n[i] == '[')
 995                         n[i] = '{';
 996                 if (n[i] == ']')
 997                         n[i] = '}';
 998                 if (n[i] == '\\')
 999                         n[i] = '|';
1000         }
1001 }
1002
1003
1004
1005 /* Find a user record by nickname and return a pointer to it */
1006
1007 userrec* Find(string nick)
1008 {
1009         user_hash::iterator iter = clientlist.find(nick);
1010
1011         if (iter == clientlist.end())
1012                 /* Couldn't find it */
1013                 return NULL;
1014
1015         return iter->second;
1016 }
1017
1018 void update_stats_l(int fd,int data_out) /* add one line-out to stats L for this fd */
1019 {
1020         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1021         {
1022                 if (i->second)
1023                 {
1024                         if (i->second->fd == fd)
1025                         {
1026                                 i->second->bytes_out+=data_out;
1027                                 i->second->cmds_out++;
1028                         }
1029                 }
1030         }
1031 }
1032
1033
1034 /* find a channel record by channel name and return a pointer to it */
1035
1036 chanrec* FindChan(const char* chan)
1037 {
1038         if (!chan)
1039         {
1040                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1041                 return NULL;
1042         }
1043
1044         chan_hash::iterator iter = chanlist.find(chan);
1045
1046         if (iter == chanlist.end())
1047                 /* Couldn't find it */
1048                 return NULL;
1049
1050         return iter->second;
1051 }
1052
1053
1054 void purge_empty_chans(void)
1055 {
1056         int go_again = 1, purge = 0;
1057
1058         while (go_again)
1059         {
1060                 go_again = 0;
1061                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1062                 {
1063                         if (i->second) {
1064                                 if (!usercount(i->second))
1065                                 {
1066                                         /* kill the record */
1067                                         if (i != chanlist.end())
1068                                         {
1069                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1070                                                 delete i->second;
1071                                                 chanlist.erase(i);
1072                                                 go_again = 1;
1073                                                 purge++;
1074                                                 break;
1075                                         }
1076                                 }
1077                                 else
1078                                 {
1079                                         log(DEBUG,"skipped purge for %s",i->second->name);
1080                                 }
1081                         }
1082                 }
1083         }
1084         log(DEBUG,"completed channel purge, killed %d",purge);
1085 }
1086
1087
1088 char scratch[MAXBUF];
1089 char sparam[MAXBUF];
1090
1091 char* chanmodes(chanrec *chan)
1092 {
1093         if (!chan)
1094         {
1095                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1096                 strcpy(scratch,"");
1097                 return scratch;
1098         }
1099
1100         strcpy(scratch,"");
1101         strcpy(sparam,"");
1102         if (chan->noexternal)
1103         {
1104                 strncat(scratch,"n",MAXMODES);
1105         }
1106         if (chan->topiclock)
1107         {
1108                 strncat(scratch,"t",MAXMODES);
1109         }
1110         if (strcmp(chan->key,""))
1111         {
1112                 strncat(scratch,"k",MAXMODES);
1113         }
1114         if (chan->limit)
1115         {
1116                 strncat(scratch,"l",MAXMODES);
1117         }
1118         if (chan->inviteonly)
1119         {
1120                 strncat(scratch,"i",MAXMODES);
1121         }
1122         if (chan->moderated)
1123         {
1124                 strncat(scratch,"m",MAXMODES);
1125         }
1126         if (chan->secret)
1127         {
1128                 strncat(scratch,"s",MAXMODES);
1129         }
1130         if (chan->c_private)
1131         {
1132                 strncat(scratch,"p",MAXMODES);
1133         }
1134         if (strcmp(chan->key,""))
1135         {
1136                 strncat(sparam," ",MAXBUF);
1137                 strncat(sparam,chan->key,MAXBUF);
1138         }
1139         if (chan->limit)
1140         {
1141                 char foo[24];
1142                 sprintf(foo," %d",chan->limit);
1143                 strncat(sparam,foo,MAXBUF);
1144         }
1145         if (strlen(chan->custom_modes))
1146         {
1147                 strncat(scratch,chan->custom_modes,MAXMODES);
1148                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1149                 {
1150                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1151                         if (extparam != "")
1152                         {
1153                                 strncat(sparam," ",MAXBUF);
1154                                 strncat(sparam,extparam.c_str(),MAXBUF);
1155                         }
1156                 }
1157         }
1158         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1159         strncat(scratch,sparam,MAXMODES);
1160         return scratch;
1161 }
1162
1163
1164 /* compile a userlist of a channel into a string, each nick seperated by
1165  * spaces and op, voice etc status shown as @ and + */
1166
1167 void userlist(userrec *user,chanrec *c)
1168 {
1169         if ((!c) || (!user))
1170         {
1171                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1172                 return;
1173         }
1174
1175         sprintf(list,"353 %s = %s :", user->nick, c->name);
1176         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1177         {
1178                 if (has_channel(i->second,c))
1179                 {
1180                         if (isnick(i->second->nick))
1181                         {
1182                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1183                                 {
1184                                         /* user is +i, and source not on the channel, does not show
1185                                          * nick in NAMES list */
1186                                         continue;
1187                                 }
1188                                 strcat(list,cmode(i->second,c));
1189                                 strcat(list,i->second->nick);
1190                                 strcat(list," ");
1191                                 if (strlen(list)>(480-NICKMAX))
1192                                 {
1193                                         /* list overflowed into
1194                                          * multiple numerics */
1195                                         WriteServ(user->fd,list);
1196                                         sprintf(list,"353 %s = %s :", user->nick, c->name);
1197                                 }
1198                         }
1199                 }
1200         }
1201         /* if whats left in the list isnt empty, send it */
1202         if (list[strlen(list)-1] != ':')
1203         {
1204                 WriteServ(user->fd,list);
1205         }
1206 }
1207
1208 /* return a count of the users on a specific channel accounting for
1209  * invisible users who won't increase the count. e.g. for /LIST */
1210
1211 int usercount_i(chanrec *c)
1212 {
1213         int i = 0;
1214         int count = 0;
1215
1216         if (!c)
1217         {
1218                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1219                 return 0;
1220         }
1221
1222         strcpy(list,"");
1223         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1224         {
1225                 if (i->second)
1226                 {
1227                         if (has_channel(i->second,c))
1228                         {
1229                                 if (isnick(i->second->nick))
1230                                 {
1231                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1232                                         {
1233                                                 /* user is +i, and source not on the channel, does not show
1234                                                  * nick in NAMES list */
1235                                                 continue;
1236                                         }
1237                                         count++;
1238                                 }
1239                         }
1240                 }
1241         }
1242         log(DEBUG,"usercount_i: %s %d",c->name,count);
1243         return count;
1244 }
1245
1246
1247 int usercount(chanrec *c)
1248 {
1249         int i = 0;
1250         int count = 0;
1251
1252         if (!c)
1253         {
1254                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1255                 return 0;
1256         }
1257
1258         strcpy(list,"");
1259         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1260         {
1261                 if (i->second)
1262                 {
1263                         if (has_channel(i->second,c))
1264                         {
1265                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1266                                 {
1267                                         count++;
1268                                 }
1269                         }
1270                 }
1271         }
1272         log(DEBUG,"usercount: %s %d",c->name,count);
1273         return count;
1274 }
1275
1276
1277 /* add a channel to a user, creating the record for it if needed and linking
1278  * it to the user record */
1279
1280 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1281 {
1282         if ((!user) || (!cn))
1283         {
1284                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1285                 return 0;
1286         }
1287
1288         int i = 0;
1289         chanrec* Ptr;
1290         int created = 0;
1291         char cname[MAXBUF];
1292
1293         strncpy(cname,cn,MAXBUF);
1294
1295         // we MUST declare this wherever we use FOREACH_RESULT
1296         int MOD_RESULT = 0;
1297
1298         if (strlen(cname) > CHANMAX-1)
1299         {
1300                 cname[CHANMAX-1] = '\0';
1301         }
1302
1303         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1304
1305         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1306         {
1307                 return NULL; // already on the channel!
1308         }
1309
1310
1311         if (!FindChan(cname))
1312         {
1313                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1314                 if (MOD_RESULT) {
1315                         return NULL;
1316                 }
1317
1318                 /* create a new one */
1319                 log(DEBUG,"add_channel: creating: %s",cname);
1320                 {
1321                         chanlist[cname] = new chanrec();
1322
1323                         strcpy(chanlist[cname]->name, cname);
1324                         chanlist[cname]->topiclock = 1;
1325                         chanlist[cname]->noexternal = 1;
1326                         chanlist[cname]->created = time(NULL);
1327                         strcpy(chanlist[cname]->topic, "");
1328                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1329                         chanlist[cname]->topicset = 0;
1330                         Ptr = chanlist[cname];
1331                         log(DEBUG,"add_channel: created: %s",cname);
1332                         /* set created to 2 to indicate user
1333                          * is the first in the channel
1334                          * and should be given ops */
1335                         created = 2;
1336                 }
1337         }
1338         else
1339         {
1340                 /* channel exists, just fish out a pointer to its struct */
1341                 Ptr = FindChan(cname);
1342                 if (Ptr)
1343                 {
1344                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1345
1346                         // the override flag allows us to bypass channel modes
1347                         // and bans (used by servers)
1348                         if (!override)
1349                         {
1350                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1351                                 if (MOD_RESULT) {
1352                                         return NULL;
1353                                 }
1354
1355                                 if (strcmp(Ptr->key,""))
1356                                 {
1357                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1358                                         if (!key)
1359                                         {
1360                                                 log(DEBUG,"add_channel: no key given in JOIN");
1361                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1362                                                 return NULL;
1363                                         }
1364                                         else
1365                                         {
1366                                                 log(DEBUG,"key at %p is %s",key,key);
1367                                                 if (strcasecmp(key,Ptr->key))
1368                                                 {
1369                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1370                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1371                                                         return NULL;
1372                                                 }
1373                                         }
1374                                 }
1375                                 log(DEBUG,"add_channel: no key");
1376
1377                                 if (Ptr->inviteonly)
1378                                 {
1379                                         log(DEBUG,"add_channel: channel is +i");
1380                                         if (user->IsInvited(Ptr->name))
1381                                         {
1382                                                 /* user was invited to channel */
1383                                                 /* there may be an optional channel NOTICE here */
1384                                         }
1385                                         else
1386                                         {
1387                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1388                                                 return NULL;
1389                                         }
1390                                 }
1391                                 log(DEBUG,"add_channel: channel is not +i");
1392
1393                                 if (Ptr->limit)
1394                                 {
1395                                         if (usercount(Ptr) == Ptr->limit)
1396                                         {
1397                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1398                                                 return NULL;
1399                                         }
1400                                 }
1401
1402                                 log(DEBUG,"add_channel: about to walk banlist");
1403
1404                                 /* check user against the channel banlist */
1405                                 if (Ptr)
1406                                 {
1407                                         if (Ptr->bans.size())
1408                                         {
1409                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1410                                                 {
1411                                                         if (match(user->GetFullHost(),i->data))
1412                                                         {
1413                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1414                                                                 return NULL;
1415                                                         }
1416                                                 }
1417                                         }
1418                                 }
1419
1420                                 log(DEBUG,"add_channel: bans checked");
1421
1422
1423                                 if ((Ptr) && (user))
1424                                 {
1425                                         user->RemoveInvite(Ptr->name);
1426                                 }
1427
1428                                 log(DEBUG,"add_channel: invites removed");
1429
1430                         }
1431                         else
1432                         {
1433                                 log(DEBUG,"Overridden checks");
1434                         }
1435
1436
1437                 }
1438                 created = 1;
1439         }
1440
1441         log(DEBUG,"Passed channel checks");
1442
1443         for (int i =0; i != MAXCHANS; i++)
1444         {
1445                 log(DEBUG,"Check location %d",i);
1446                 if (user->chans[i].channel == NULL)
1447                 {
1448                         log(DEBUG,"Adding into their channel list at location %d",i);
1449
1450                         if (created == 2)
1451                         {
1452                                 /* first user in is given ops */
1453                                 user->chans[i].uc_modes = UCMODE_OP;
1454                         }
1455                         else
1456                         {
1457                                 user->chans[i].uc_modes = 0;
1458                         }
1459                         user->chans[i].channel = Ptr;
1460                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1461
1462                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1463                         {
1464                                 // use the stamdard J token with no privilages.
1465                                 char buffer[MAXBUF];
1466                                 if (created == 2)
1467                                 {
1468                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1469                                 }
1470                                 else
1471                                 {
1472                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1473                                 }
1474                                 NetSendToAll(buffer);
1475                         }
1476
1477                         log(DEBUG,"Sent JOIN to client");
1478
1479                         if (Ptr->topicset)
1480                         {
1481                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1482                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1483                         }
1484                         userlist(user,Ptr);
1485                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1486                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1487                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1488                         FOREACH_MOD OnUserJoin(user,Ptr);
1489                         return Ptr;
1490                 }
1491         }
1492         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1493         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1494         return NULL;
1495 }
1496
1497 /* remove a channel from a users record, and remove the record from memory
1498  * if the channel has become empty */
1499
1500 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1501 {
1502         if ((!user) || (!cname))
1503         {
1504                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1505                 return NULL;
1506         }
1507
1508         chanrec* Ptr;
1509         int created = 0;
1510
1511         if ((!cname) || (!user))
1512         {
1513                 return NULL;
1514         }
1515
1516         Ptr = FindChan(cname);
1517
1518         if (!Ptr)
1519         {
1520                 return NULL;
1521         }
1522
1523         FOREACH_MOD OnUserPart(user,Ptr);
1524         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1525
1526         for (int i =0; i != MAXCHANS; i++)
1527         {
1528                 /* zap it from the channel list of the user */
1529                 if (user->chans[i].channel == Ptr)
1530                 {
1531                         if (reason)
1532                         {
1533                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1534
1535                                 if (!local)
1536                                 {
1537                                         char buffer[MAXBUF];
1538                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1539                                         NetSendToAll(buffer);
1540                                 }
1541
1542
1543                         }
1544                         else
1545                         {
1546                                 if (!local)
1547                                 {
1548                                         char buffer[MAXBUF];
1549                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1550                                         NetSendToAll(buffer);
1551                                 }
1552
1553                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1554                         }
1555                         user->chans[i].uc_modes = 0;
1556                         user->chans[i].channel = NULL;
1557                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1558                         break;
1559                 }
1560         }
1561
1562         /* if there are no users left on the channel */
1563         if (!usercount(Ptr))
1564         {
1565                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1566
1567                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1568
1569                 /* kill the record */
1570                 if (iter != chanlist.end())
1571                 {
1572                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1573                         delete iter->second;
1574                         chanlist.erase(iter);
1575                 }
1576         }
1577 }
1578
1579
1580 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1581 {
1582         if ((!src) || (!user) || (!Ptr) || (!reason))
1583         {
1584                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1585                 return;
1586         }
1587
1588         int i = 0;
1589         int created = 0;
1590
1591         if ((!Ptr) || (!user) || (!src))
1592         {
1593                 return;
1594         }
1595
1596         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1597
1598         if (!has_channel(user,Ptr))
1599         {
1600                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1601                 return;
1602         }
1603         if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1604         {
1605                 if (cstatus(src,Ptr) == STATUS_HOP)
1606                 {
1607                         WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1608                 }
1609                 else
1610                 {
1611                         WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1612                 }
1613
1614                 return;
1615         }
1616
1617         for (int i =0; i != MAXCHANS; i++)
1618         {
1619                 /* zap it from the channel list of the user */
1620                 if (user->chans[i].channel)
1621                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1622                 {
1623                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1624                         user->chans[i].uc_modes = 0;
1625                         user->chans[i].channel = NULL;
1626                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1627                         break;
1628                 }
1629         }
1630
1631         /* if there are no users left on the channel */
1632         if (!usercount(Ptr))
1633         {
1634                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1635
1636                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1637
1638                 /* kill the record */
1639                 if (iter != chanlist.end())
1640                 {
1641                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1642                         delete iter->second;
1643                         chanlist.erase(iter);
1644                 }
1645         }
1646 }
1647
1648
1649
1650
1651 /* This function pokes and hacks at a parameter list like the following:
1652  *
1653  * PART #winbot, #darkgalaxy :m00!
1654  *
1655  * to turn it into a series of individual calls like this:
1656  *
1657  * PART #winbot :m00!
1658  * PART #darkgalaxy :m00!
1659  *
1660  * The seperate calls are sent to a callback function provided by the caller
1661  * (the caller will usually call itself recursively). The callback function
1662  * must be a command handler. Calling this function on a line with no list causes
1663  * no action to be taken. You must provide a starting and ending parameter number
1664  * where the range of the list can be found, useful if you have a terminating
1665  * parameter as above which is actually not part of the list, or parameters
1666  * before the actual list as well. This code is used by many functions which
1667  * can function as "one to list" (see the RFC) */
1668
1669 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1670 {
1671         char plist[MAXBUF];
1672         char *param;
1673         char *pars[32];
1674         char blog[32][MAXBUF];
1675         char blog2[32][MAXBUF];
1676         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1677         char keystr[MAXBUF];
1678         char moo[MAXBUF];
1679
1680         for (int i = 0; i <32; i++)
1681                 strcpy(blog[i],"");
1682
1683         for (int i = 0; i <32; i++)
1684                 strcpy(blog2[i],"");
1685
1686         strcpy(moo,"");
1687         for (int i = 0; i <10; i++)
1688         {
1689                 if (!parameters[i])
1690                 {
1691                         parameters[i] = moo;
1692                 }
1693         }
1694         if (joins)
1695         {
1696                 if (pcnt > 1) /* we have a key to copy */
1697                 {
1698                         strcpy(keystr,parameters[1]);
1699                 }
1700         }
1701
1702         if (!parameters[start])
1703         {
1704                 return 0;
1705         }
1706         if (!strchr(parameters[start],','))
1707         {
1708                 return 0;
1709         }
1710         strcpy(plist,"");
1711         for (int i = start; i <= end; i++)
1712         {
1713                 if (parameters[i])
1714                 {
1715                         strcat(plist,parameters[i]);
1716                 }
1717         }
1718
1719         j = 0;
1720         param = plist;
1721
1722         t = strlen(plist);
1723         for (int i = 0; i < t; i++)
1724         {
1725                 if (plist[i] == ',')
1726                 {
1727                         plist[i] = '\0';
1728                         strcpy(blog[j++],param);
1729                         param = plist+i+1;
1730                         if (j>20)
1731                         {
1732                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1733                                 return 1;
1734                         }
1735                 }
1736         }
1737         strcpy(blog[j++],param);
1738         total = j;
1739
1740         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1741         {
1742                 strcat(keystr,",");
1743         }
1744
1745         if ((joins) && (keystr))
1746         {
1747                 if (strchr(keystr,','))
1748                 {
1749                         j = 0;
1750                         param = keystr;
1751                         t2 = strlen(keystr);
1752                         for (int i = 0; i < t2; i++)
1753                         {
1754                                 if (keystr[i] == ',')
1755                                 {
1756                                         keystr[i] = '\0';
1757                                         strcpy(blog2[j++],param);
1758                                         param = keystr+i+1;
1759                                 }
1760                         }
1761                         strcpy(blog2[j++],param);
1762                         total2 = j;
1763                 }
1764         }
1765
1766         for (j = 0; j < total; j++)
1767         {
1768                 if (blog[j])
1769                 {
1770                         pars[0] = blog[j];
1771                 }
1772                 for (q = end; q < pcnt-1; q++)
1773                 {
1774                         if (parameters[q+1])
1775                         {
1776                                 pars[q-end+1] = parameters[q+1];
1777                         }
1778                 }
1779                 if ((joins) && (parameters[1]))
1780                 {
1781                         if (pcnt > 1)
1782                         {
1783                                 pars[1] = blog2[j];
1784                         }
1785                         else
1786                         {
1787                                 pars[1] = NULL;
1788                         }
1789                 }
1790                 /* repeatedly call the function with the hacked parameter list */
1791                 if ((joins) && (pcnt > 1))
1792                 {
1793                         if (pars[1])
1794                         {
1795                                 // pars[1] already set up and containing key from blog2[j]
1796                                 fn(pars,2,u);
1797                         }
1798                         else
1799                         {
1800                                 pars[1] = parameters[1];
1801                                 fn(pars,2,u);
1802                         }
1803                 }
1804                 else
1805                 {
1806                         fn(pars,pcnt-(end-start),u);
1807                 }
1808         }
1809
1810         return 1;
1811 }
1812
1813
1814
1815 void kill_link(userrec *user,const char* r)
1816 {
1817         user_hash::iterator iter = clientlist.find(user->nick);
1818
1819         char reason[MAXBUF];
1820
1821         strncpy(reason,r,MAXBUF);
1822
1823         if (strlen(reason)>MAXQUIT)
1824         {
1825                 reason[MAXQUIT-1] = '\0';
1826         }
1827
1828         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1829         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1830         log(DEBUG,"closing fd %d",user->fd);
1831
1832         /* bugfix, cant close() a nonblocking socket (sux!) */
1833         if (user->registered == 7) {
1834                 FOREACH_MOD OnUserQuit(user);
1835                 WriteCommonExcept(user,"QUIT :%s",reason);
1836
1837                 // Q token must go to ALL servers!!!
1838                 char buffer[MAXBUF];
1839                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1840                 NetSendToAll(buffer);
1841         }
1842
1843         /* push the socket on a stack of sockets due to be closed at the next opportunity
1844          * 'Client exited' is an exception to this as it means the client side has already
1845          * closed the socket, we don't need to do it.
1846          */
1847         fd_reap.push_back(user->fd);
1848
1849         bool do_purge = false;
1850
1851         if (user->registered == 7) {
1852                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
1853                 AddWhoWas(user);
1854         }
1855
1856         if (iter != clientlist.end())
1857         {
1858                 log(DEBUG,"deleting user hash value %d",iter->second);
1859                 if ((iter->second) && (user->registered == 7)) {
1860                         delete iter->second;
1861                 }
1862                 clientlist.erase(iter);
1863         }
1864
1865         if (user->registered == 7) {
1866                 purge_empty_chans();
1867         }
1868 }
1869
1870 void kill_link_silent(userrec *user,const char* r)
1871 {
1872         user_hash::iterator iter = clientlist.find(user->nick);
1873
1874         char reason[MAXBUF];
1875
1876         strncpy(reason,r,MAXBUF);
1877
1878         if (strlen(reason)>MAXQUIT)
1879         {
1880                 reason[MAXQUIT-1] = '\0';
1881         }
1882
1883         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1884         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1885         log(DEBUG,"closing fd %d",user->fd);
1886
1887         /* bugfix, cant close() a nonblocking socket (sux!) */
1888         if (user->registered == 7) {
1889                 FOREACH_MOD OnUserQuit(user);
1890                 WriteCommonExcept(user,"QUIT :%s",reason);
1891
1892                 // Q token must go to ALL servers!!!
1893                 char buffer[MAXBUF];
1894                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1895                 NetSendToAll(buffer);
1896         }
1897
1898         /* push the socket on a stack of sockets due to be closed at the next opportunity
1899          * 'Client exited' is an exception to this as it means the client side has already
1900          * closed the socket, we don't need to do it.
1901          */
1902         fd_reap.push_back(user->fd);
1903
1904         bool do_purge = false;
1905
1906         if (iter != clientlist.end())
1907         {
1908                 log(DEBUG,"deleting user hash value %d",iter->second);
1909                 if ((iter->second) && (user->registered == 7)) {
1910                         delete iter->second;
1911                 }
1912                 clientlist.erase(iter);
1913         }
1914
1915         if (user->registered == 7) {
1916                 purge_empty_chans();
1917         }
1918 }
1919
1920
1921
1922 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1923
1924 char* Passwd(userrec *user)
1925 {
1926         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1927         {
1928                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
1929                 {
1930                         return i->pass;
1931                 }
1932         }
1933         return "";
1934 }
1935
1936 bool IsDenied(userrec *user)
1937 {
1938         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1939         {
1940                 if (match(user->host,i->host) && (i->type == CC_DENY))
1941                 {
1942                         return true;
1943                 }
1944         }
1945         return false;
1946 }
1947
1948
1949
1950
1951 /* sends out an error notice to all connected clients (not to be used
1952  * lightly!) */
1953
1954 void send_error(char *s)
1955 {
1956         log(DEBUG,"send_error: %s",s);
1957         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1958         {
1959                 if (isnick(i->second->nick))
1960                 {
1961                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
1962                 }
1963                 else
1964                 {
1965                         // fix - unregistered connections receive ERROR, not NOTICE
1966                         Write(i->second->fd,"ERROR :%s",s);
1967                 }
1968         }
1969 }
1970
1971 void Error(int status)
1972 {
1973         signal (SIGALRM, SIG_IGN);
1974         signal (SIGPIPE, SIG_IGN);
1975         signal (SIGTERM, SIG_IGN);
1976         signal (SIGABRT, SIG_IGN);
1977         signal (SIGSEGV, SIG_IGN);
1978         signal (SIGURG, SIG_IGN);
1979         signal (SIGKILL, SIG_IGN);
1980         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
1981         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
1982         exit(status);
1983 }
1984
1985
1986 int main(int argc, char *argv[])
1987 {
1988         Start();
1989         srand(time(NULL));
1990         log(DEBUG,"*** InspIRCd starting up!");
1991         if (!FileExists(CONFIG_FILE))
1992         {
1993                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
1994                 log(DEBUG,"main: no config");
1995                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
1996                 Exit(ERROR);
1997         }
1998         if (argc > 1) {
1999                 if (!strcmp(argv[1],"-nofork")) {
2000                         nofork = true;
2001                 }
2002         }
2003         if (InspIRCd() == ERROR)
2004         {
2005                 log(DEBUG,"main: daemon function bailed");
2006                 printf("ERROR: could not initialise. Shutting down.\n");
2007                 Exit(ERROR);
2008         }
2009         Exit(TRUE);
2010         return 0;
2011 }
2012
2013 template<typename T> inline string ConvToStr(const T &in)
2014 {
2015         stringstream tmp;
2016         if (!(tmp << in)) return string();
2017         return tmp.str();
2018 }
2019
2020 /* re-allocates a nick in the user_hash after they change nicknames,
2021  * returns a pointer to the new user as it may have moved */
2022
2023 userrec* ReHashNick(char* Old, char* New)
2024 {
2025         user_hash::iterator newnick;
2026         user_hash::iterator oldnick = clientlist.find(Old);
2027
2028         log(DEBUG,"ReHashNick: %s %s",Old,New);
2029
2030         if (!strcasecmp(Old,New))
2031         {
2032                 log(DEBUG,"old nick is new nick, skipping");
2033                 return oldnick->second;
2034         }
2035
2036         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2037
2038         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2039
2040         clientlist[New] = new userrec();
2041         clientlist[New] = oldnick->second;
2042         /*delete oldnick->second; */
2043         clientlist.erase(oldnick);
2044
2045         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2046
2047         return clientlist[New];
2048 }
2049
2050 /* adds or updates an entry in the whowas list */
2051 void AddWhoWas(userrec* u)
2052 {
2053         user_hash::iterator iter = whowas.find(u->nick);
2054         userrec *a = new userrec();
2055         strcpy(a->nick,u->nick);
2056         strcpy(a->ident,u->ident);
2057         strcpy(a->dhost,u->dhost);
2058         strcpy(a->host,u->host);
2059         strcpy(a->fullname,u->fullname);
2060         strcpy(a->server,u->server);
2061         a->signon = u->signon;
2062
2063         /* MAX_WHOWAS:   max number of /WHOWAS items
2064          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2065          *               can be replaced by a newer one
2066          */
2067
2068         if (iter == whowas.end())
2069         {
2070                 if (whowas.size() == WHOWAS_MAX)
2071                 {
2072                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2073                         {
2074                                 // 3600 seconds in an hour ;)
2075                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
2076                                 {
2077                                         delete i->second;
2078                                         i->second = a;
2079                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2080                                         return;
2081                                 }
2082                         }
2083                 }
2084                 else
2085                 {
2086                         log(DEBUG,"added fresh WHOWAS entry");
2087                         whowas[a->nick] = a;
2088                 }
2089         }
2090         else
2091         {
2092                 log(DEBUG,"updated WHOWAS entry");
2093                 delete iter->second;
2094                 iter->second = a;
2095         }
2096 }
2097
2098
2099 /* add a client connection to the sockets list */
2100 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2101 {
2102         int i;
2103         int blocking = 1;
2104         char resolved[MAXBUF];
2105         string tempnick;
2106         char tn2[MAXBUF];
2107         user_hash::iterator iter;
2108
2109         tempnick = ConvToStr(socket) + "-unknown";
2110         sprintf(tn2,"%d-unknown",socket);
2111
2112         iter = clientlist.find(tempnick);
2113
2114         if (iter != clientlist.end()) return;
2115
2116         /*
2117          * It is OK to access the value here this way since we know
2118          * it exists, we just created it above.
2119          *
2120          * At NO other time should you access a value in a map or a
2121          * hash_map this way.
2122          */
2123         clientlist[tempnick] = new userrec();
2124
2125         NonBlocking(socket);
2126         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2127
2128         clientlist[tempnick]->fd = socket;
2129         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2130         strncpy(clientlist[tempnick]->host, host,160);
2131         strncpy(clientlist[tempnick]->dhost, host,160);
2132         strncpy(clientlist[tempnick]->server, ServerName,256);
2133         strncpy(clientlist[tempnick]->ident, "unknown",9);
2134         clientlist[tempnick]->registered = 0;
2135         clientlist[tempnick]->signon = time(NULL);
2136         clientlist[tempnick]->nping = time(NULL)+240;
2137         clientlist[tempnick]->lastping = 1;
2138         clientlist[tempnick]->port = port;
2139         strncpy(clientlist[tempnick]->ip,ip,32);
2140
2141         if (iscached)
2142         {
2143                 WriteServ(socket,"NOTICE Auth :Found your hostname (cached)...");
2144         }
2145         else
2146         {
2147                 WriteServ(socket,"NOTICE Auth :Looking up your hostname...");
2148         }
2149
2150         // set the registration timeout for this user
2151         unsigned long class_regtimeout = 90;
2152         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2153         {
2154                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2155                 {
2156                         class_regtimeout = (unsigned long)i->registration_timeout;
2157                         break;
2158                 }
2159         }
2160
2161         int class_flood = 0;
2162         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2163         {
2164                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2165                 {
2166                         class_flood = i->flood;
2167                         break;
2168                 }
2169         }
2170
2171         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
2172         clientlist[tempnick]->flood = class_flood;
2173
2174         for (int i = 0; i < MAXCHANS; i++)
2175         {
2176                 clientlist[tempnick]->chans[i].channel = NULL;
2177                 clientlist[tempnick]->chans[i].uc_modes = 0;
2178         }
2179
2180         if (clientlist.size() == MAXCLIENTS)
2181                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2182
2183         char* r = matches_zline(ip);
2184         if (r)
2185         {
2186                 char reason[MAXBUF];
2187                 snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2188                 kill_link(clientlist[tempnick],reason);
2189         }
2190 }
2191
2192
2193 int usercnt(void)
2194 {
2195         return clientlist.size();
2196 }
2197
2198
2199 int usercount_invisible(void)
2200 {
2201         int c = 0;
2202
2203         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2204         {
2205                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2206         }
2207         return c;
2208 }
2209
2210 int usercount_opers(void)
2211 {
2212         int c = 0;
2213
2214         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2215         {
2216                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2217         }
2218         return c;
2219 }
2220
2221 int usercount_unknown(void)
2222 {
2223         int c = 0;
2224
2225         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2226         {
2227                 if ((i->second->fd) && (i->second->registered != 7))
2228                         c++;
2229         }
2230         return c;
2231 }
2232
2233 long chancount(void)
2234 {
2235         return chanlist.size();
2236 }
2237
2238 long count_servs(void)
2239 {
2240         int c = 0;
2241         //for (int j = 0; j < 255; j++)
2242         //{
2243         //      if (servers[j] != NULL)
2244         //              c++;
2245         //}
2246         return c;
2247 }
2248
2249 long servercount(void)
2250 {
2251         return count_servs()+1;
2252 }
2253
2254 long local_count()
2255 {
2256         int c = 0;
2257         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2258         {
2259                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2260         }
2261         return c;
2262 }
2263
2264
2265 void ShowMOTD(userrec *user)
2266 {
2267         if (!MOTD.size())
2268         {
2269                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2270                 return;
2271         }
2272         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
2273         for (int i = 0; i != MOTD.size(); i++)
2274         {
2275                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
2276         }
2277         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
2278 }
2279
2280 void ShowRULES(userrec *user)
2281 {
2282         if (!RULES.size())
2283         {
2284                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2285                 return;
2286         }
2287         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2288         for (int i = 0; i != RULES.size(); i++)
2289         {
2290                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2291         }
2292         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2293 }
2294
2295 /* shows the message of the day, and any other on-logon stuff */
2296 void ConnectUser(userrec *user)
2297 {
2298         user->registered = 7;
2299         user->idle_lastmsg = time(NULL);
2300         log(DEBUG,"ConnectUser: %s",user->nick);
2301
2302         if (strcmp(Passwd(user),"") && (!user->haspassed))
2303         {
2304                 kill_link(user,"Invalid password");
2305                 return;
2306         }
2307         if (IsDenied(user))
2308         {
2309                 kill_link(user,"Unauthorised connection");
2310                 return;
2311         }
2312
2313         char match_against[MAXBUF];
2314         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2315         char* r = matches_gline(match_against);
2316         if (r)
2317         {
2318                 char reason[MAXBUF];
2319                 snprintf(reason,MAXBUF,"G-Lined: %s",r);
2320                 kill_link_silent(user,reason);
2321                 return;
2322         }
2323
2324         r = matches_kline(user->host);
2325         if (r)
2326         {
2327                 char reason[MAXBUF];
2328                 snprintf(reason,MAXBUF,"K-Lined: %s",r);
2329                 kill_link_silent(user,reason);
2330                 return;
2331         }
2332
2333         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2334         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2335         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2336         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2337         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2338         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);
2339         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);
2340         ShowMOTD(user);
2341         FOREACH_MOD OnUserConnect(user);
2342         WriteOpers("*** Client connecting on port %d: %s!%s@%s",user->port,user->nick,user->ident,user->host);
2343
2344         char buffer[MAXBUF];
2345         snprintf(buffer,MAXBUF,"N %d %s %s %s %s +%s %s %s :%s",user->age,user->nick,user->host,user->dhost,user->ident,user->modes,user->ip,ServerName,user->fullname);
2346         NetSendToAll(buffer);
2347 }
2348
2349 void handle_version(char **parameters, int pcnt, userrec *user)
2350 {
2351         char Revision[] = "$Revision$";
2352
2353         char *s1 = Revision;
2354         char *savept;
2355         char *v1 = strtok_r(s1," ",&savept);
2356         s1 = savept;
2357         char *v2 = strtok_r(s1," ",&savept);
2358         s1 = savept;
2359
2360         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2361 }
2362
2363
2364 // calls a handler function for a command
2365
2366 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2367 {
2368                 for (int i = 0; i < cmdlist.size(); i++)
2369                 {
2370                         if (!strcasecmp(cmdlist[i].command,commandname))
2371                         {
2372                                 if (cmdlist[i].handler_function)
2373                                 {
2374                                         if (pcnt>=cmdlist[i].min_params)
2375                                         {
2376                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2377                                                 {
2378                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2379                                                 }
2380                                         }
2381                                 }
2382                         }
2383                 }
2384 }
2385
2386 void DoSplitEveryone()
2387 {
2388         bool go_again = true;
2389         while (go_again)
2390         {
2391                 go_again = false;
2392                 for (int i = 0; i < 32; i++)
2393                 {
2394                         if (me[i] != NULL)
2395                         {
2396                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2397                                 {
2398                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2399                                         {
2400                                                 j->routes.clear();
2401                                                 j->CloseConnection();
2402                                                 me[i]->connectors.erase(j);
2403                                                 go_again = true;
2404                                                 break;
2405                                         }
2406                                 }
2407                         }
2408                 }
2409         }
2410         log(DEBUG,"Removed server. Will remove clients...");
2411         // iterate through the userlist and remove all users on this server.
2412         // because we're dealing with a mesh, we dont have to deal with anything
2413         // "down-route" from this server (nice huh)
2414         go_again = true;
2415         char reason[MAXBUF];
2416         while (go_again)
2417         {
2418                 go_again = false;
2419                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2420                 {
2421                         if (strcasecmp(u->second->server,ServerName))
2422                         {
2423                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2424                                 kill_link(u->second,reason);
2425                                 go_again = true;
2426                                 break;
2427                         }
2428                 }
2429         }
2430 }
2431
2432
2433
2434 char islast(const char* s)
2435 {
2436         char c = '`';
2437         for (int j = 0; j < 32; j++)
2438         {
2439                 if (me[j] != NULL)
2440                 {
2441                         for (int k = 0; k < me[j]->connectors.size(); k++)
2442                         {
2443                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2444                                 {
2445                                         c = '|';
2446                                 }
2447                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2448                                 {
2449                                         c = '`';
2450                                 }
2451                         }
2452                 }
2453         }
2454         return c;
2455 }
2456
2457 long map_count(const char* s)
2458 {
2459         int c = 0;
2460         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2461         {
2462                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2463         }
2464         return c;
2465 }
2466
2467
2468 void force_nickchange(userrec* user,const char* newnick)
2469 {
2470         char nick[MAXBUF];
2471         int MOD_RESULT = 0;
2472
2473         strcpy(nick,"");
2474
2475         FOREACH_RESULT(OnUserPreNick(user,newnick));
2476         if (MOD_RESULT) {
2477                 kill_link(user,"Nickname collision");
2478                 return;
2479         }
2480         if (matches_qline(newnick))
2481         {
2482                 kill_link(user,"Nickname collision");
2483                 return;
2484         }
2485
2486         if (user)
2487         {
2488                 if (newnick)
2489                 {
2490                         strncpy(nick,newnick,MAXBUF);
2491                 }
2492                 if (user->registered == 7)
2493                 {
2494                         char* pars[1];
2495                         pars[0] = nick;
2496                         handle_nick(pars,1,user);
2497                 }
2498         }
2499 }
2500
2501
2502 int process_parameters(char **command_p,char *parameters)
2503 {
2504         int i = 0;
2505         int j = 0;
2506         int q = 0;
2507         q = strlen(parameters);
2508         if (!q)
2509         {
2510                 /* no parameters, command_p invalid! */
2511                 return 0;
2512         }
2513         if (parameters[0] == ':')
2514         {
2515                 command_p[0] = parameters+1;
2516                 return 1;
2517         }
2518         if (q)
2519         {
2520                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2521                 {
2522                         /* only one parameter */
2523                         command_p[0] = parameters;
2524                         if (parameters[0] == ':')
2525                         {
2526                                 if (strchr(parameters,' ') != NULL)
2527                                 {
2528                                         command_p[0]++;
2529                                 }
2530                         }
2531                         return 1;
2532                 }
2533         }
2534         command_p[j++] = parameters;
2535         for (int i = 0; i <= q; i++)
2536         {
2537                 if (parameters[i] == ' ')
2538                 {
2539                         command_p[j++] = parameters+i+1;
2540                         parameters[i] = '\0';
2541                         if (command_p[j-1][0] == ':')
2542                         {
2543                                 *command_p[j-1]++; /* remove dodgy ":" */
2544                                 break;
2545                                 /* parameter like this marks end of the sequence */
2546                         }
2547                 }
2548         }
2549         return j; /* returns total number of items in the list */
2550 }
2551
2552 void process_command(userrec *user, char* cmd)
2553 {
2554         char *parameters;
2555         char *command;
2556         char *command_p[127];
2557         char p[MAXBUF], temp[MAXBUF];
2558         int i, j, items, cmd_found;
2559
2560         for (int i = 0; i < 127; i++)
2561                 command_p[i] = NULL;
2562
2563         if (!user)
2564         {
2565                 return;
2566         }
2567         if (!cmd)
2568         {
2569                 return;
2570         }
2571         if (!strcmp(cmd,""))
2572         {
2573                 return;
2574         }
2575
2576         int total_params = 0;
2577         if (strlen(cmd)>2)
2578         {
2579                 for (int q = 0; q < strlen(cmd)-1; q++)
2580                 {
2581                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2582                         {
2583                                 total_params++;
2584                                 // found a 'trailing', we dont count them after this.
2585                                 break;
2586                         }
2587                         if (cmd[q] == ' ')
2588                                 total_params++;
2589                 }
2590         }
2591
2592         // another phidjit bug...
2593         if (total_params > 126)
2594         {
2595                 kill_link(user,"Protocol violation (1)");
2596                 return;
2597         }
2598
2599         strcpy(temp,cmd);
2600
2601         std::string tmp = cmd;
2602         for (int i = 0; i <= MODCOUNT; i++)
2603         {
2604                 std::string oldtmp = tmp;
2605                 modules[i]->OnServerRaw(tmp,true,user);
2606                 if (oldtmp != tmp)
2607                 {
2608                         log(DEBUG,"A Module changed the input string!");
2609                         log(DEBUG,"New string: %s",tmp.c_str());
2610                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2611                         break;
2612                 }
2613         }
2614         strncpy(cmd,tmp.c_str(),MAXBUF);
2615         strcpy(temp,cmd);
2616
2617         if (!strchr(cmd,' '))
2618         {
2619                 /* no parameters, lets skip the formalities and not chop up
2620                  * the string */
2621                 log(DEBUG,"About to preprocess command with no params");
2622                 items = 0;
2623                 command_p[0] = NULL;
2624                 parameters = NULL;
2625                 for (int i = 0; i <= strlen(cmd); i++)
2626                 {
2627                         cmd[i] = toupper(cmd[i]);
2628                 }
2629                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2630                 command = cmd;
2631         }
2632         else
2633         {
2634                 strcpy(cmd,"");
2635                 j = 0;
2636                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2637                 for (int i = 0; i < strlen(temp); i++)
2638                 {
2639                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2640                         {
2641                                 cmd[j++] = temp[i];
2642                                 cmd[j] = 0;
2643                         }
2644                 }
2645                 /* split the full string into a command plus parameters */
2646                 parameters = p;
2647                 strcpy(p," ");
2648                 command = cmd;
2649                 if (strchr(cmd,' '))
2650                 {
2651                         for (int i = 0; i <= strlen(cmd); i++)
2652                         {
2653                                 /* capitalise the command ONLY, leave params intact */
2654                                 cmd[i] = toupper(cmd[i]);
2655                                 /* are we nearly there yet?! :P */
2656                                 if (cmd[i] == ' ')
2657                                 {
2658                                         command = cmd;
2659                                         parameters = cmd+i+1;
2660                                         cmd[i] = '\0';
2661                                         break;
2662                                 }
2663                         }
2664                 }
2665                 else
2666                 {
2667                         for (int i = 0; i <= strlen(cmd); i++)
2668                         {
2669                                 cmd[i] = toupper(cmd[i]);
2670                         }
2671                 }
2672
2673         }
2674         cmd_found = 0;
2675
2676         if (strlen(command)>MAXCOMMAND)
2677         {
2678                 kill_link(user,"Protocol violation (2)");
2679                 return;
2680         }
2681
2682         for (int x = 0; x < strlen(command); x++)
2683         {
2684                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2685                 {
2686                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2687                         {
2688                                 if (!strchr("@!\"$%^&*(){}[]_-=+;:'#~,.<>/?\\|`",command[x]))
2689                                 {
2690                                         kill_link(user,"Protocol violation (3)");
2691                                         return;
2692                                 }
2693                         }
2694                 }
2695         }
2696
2697         for (int i = 0; i != cmdlist.size(); i++)
2698         {
2699                 if (strcmp(cmdlist[i].command,""))
2700                 {
2701                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2702                         {
2703                                 log(DEBUG,"Found matching command");
2704
2705                                 if (parameters)
2706                                 {
2707                                         if (strcmp(parameters,""))
2708                                         {
2709                                                 items = process_parameters(command_p,parameters);
2710                                         }
2711                                         else
2712                                         {
2713                                                 items = 0;
2714                                                 command_p[0] = NULL;
2715                                         }
2716                                 }
2717                                 else
2718                                 {
2719                                         items = 0;
2720                                         command_p[0] = NULL;
2721                                 }
2722
2723                                 if (user)
2724                                 {
2725                                         log(DEBUG,"Processing command");
2726
2727                                         /* activity resets the ping pending timer */
2728                                         user->nping = time(NULL) + 120;
2729                                         if ((items) < cmdlist[i].min_params)
2730                                         {
2731                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2732                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2733                                                 return;
2734                                         }
2735                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2736                                         {
2737                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2738                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2739                                                 cmd_found = 1;
2740                                                 return;
2741                                         }
2742                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2743                                          * deny command! */
2744                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2745                                         {
2746                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2747                                                 {
2748                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2749                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2750                                                         return;
2751                                                 }
2752                                         }
2753                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
2754                                         {
2755                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
2756                                                 if (cmdlist[i].handler_function)
2757                                                 {
2758                                                         /* ikky /stats counters */
2759                                                         if (temp)
2760                                                         {
2761                                                                 if (user)
2762                                                                 {
2763                                                                         user->bytes_in += strlen(temp);
2764                                                                         user->cmds_in++;
2765                                                                 }
2766                                                                 cmdlist[i].use_count++;
2767                                                                 cmdlist[i].total_bytes+=strlen(temp);
2768                                                         }
2769
2770                                                         /* WARNING: nothing may come after the
2771                                                          * command handler call, as the handler
2772                                                          * may free the user structure! */
2773
2774                                                         cmdlist[i].handler_function(command_p,items,user);
2775                                                 }
2776                                                 return;
2777                                         }
2778                                         else
2779                                         {
2780                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2781                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
2782                                                 return;
2783                                         }
2784                                 }
2785                                 cmd_found = 1;
2786                         }
2787                 }
2788         }
2789         if ((!cmd_found) && (user))
2790         {
2791                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
2792                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2793         }
2794 }
2795
2796
2797 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
2798 {
2799         command_t comm;
2800         /* create the command and push it onto the table */
2801         strcpy(comm.command,cmd);
2802         comm.handler_function = f;
2803         comm.flags_needed = flags;
2804         comm.min_params = minparams;
2805         comm.use_count = 0;
2806         comm.total_bytes = 0;
2807         cmdlist.push_back(comm);
2808         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
2809 }
2810
2811 void SetupCommandTable(void)
2812 {
2813         createcommand("USER",handle_user,0,4);
2814         createcommand("NICK",handle_nick,0,1);
2815         createcommand("QUIT",handle_quit,0,0);
2816         createcommand("VERSION",handle_version,0,0);
2817         createcommand("PING",handle_ping,0,1);
2818         createcommand("PONG",handle_pong,0,1);
2819         createcommand("ADMIN",handle_admin,0,0);
2820         createcommand("PRIVMSG",handle_privmsg,0,2);
2821         createcommand("INFO",handle_info,0,0);
2822         createcommand("TIME",handle_time,0,0);
2823         createcommand("WHOIS",handle_whois,0,1);
2824         createcommand("WALLOPS",handle_wallops,'o',1);
2825         createcommand("NOTICE",handle_notice,0,2);
2826         createcommand("JOIN",handle_join,0,1);
2827         createcommand("NAMES",handle_names,0,1);
2828         createcommand("PART",handle_part,0,1);
2829         createcommand("KICK",handle_kick,0,2);
2830         createcommand("MODE",handle_mode,0,1);
2831         createcommand("TOPIC",handle_topic,0,1);
2832         createcommand("WHO",handle_who,0,1);
2833         createcommand("MOTD",handle_motd,0,0);
2834         createcommand("RULES",handle_rules,0,0);
2835         createcommand("OPER",handle_oper,0,2);
2836         createcommand("LIST",handle_list,0,0);
2837         createcommand("DIE",handle_die,'o',1);
2838         createcommand("RESTART",handle_restart,'o',1);
2839         createcommand("KILL",handle_kill,'o',2);
2840         createcommand("REHASH",handle_rehash,'o',0);
2841         createcommand("LUSERS",handle_lusers,0,0);
2842         createcommand("STATS",handle_stats,0,1);
2843         createcommand("USERHOST",handle_userhost,0,1);
2844         createcommand("AWAY",handle_away,0,0);
2845         createcommand("ISON",handle_ison,0,0);
2846         createcommand("SUMMON",handle_summon,0,0);
2847         createcommand("USERS",handle_users,0,0);
2848         createcommand("INVITE",handle_invite,0,2);
2849         createcommand("PASS",handle_pass,0,1);
2850         createcommand("TRACE",handle_trace,'o',0);
2851         createcommand("WHOWAS",handle_whowas,0,1);
2852         createcommand("CONNECT",handle_connect,'o',1);
2853         createcommand("SQUIT",handle_squit,'o',0);
2854         createcommand("MODULES",handle_modules,'o',0);
2855         createcommand("LINKS",handle_links,0,0);
2856         createcommand("MAP",handle_map,0,0);
2857         createcommand("KLINE",handle_kline,'o',1);
2858         createcommand("GLINE",handle_gline,'o',1);
2859         createcommand("ZLINE",handle_zline,'o',1);
2860         createcommand("QLINE",handle_qline,'o',1);
2861 }
2862
2863 void process_buffer(const char* cmdbuf,userrec *user)
2864 {
2865         if (!user)
2866         {
2867                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2868                 return;
2869         }
2870         char cmd[MAXBUF];
2871         int i;
2872         if (!cmdbuf)
2873         {
2874                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2875                 return;
2876         }
2877         if (!strcmp(cmdbuf,""))
2878         {
2879                 return;
2880         }
2881         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
2882
2883         strncpy(cmd,cmdbuf,MAXBUF);
2884         if (!strcmp(cmd,""))
2885         {
2886                 return;
2887         }
2888         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
2889         {
2890                 cmd[strlen(cmd)-1] = '\0';
2891         }
2892         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
2893         {
2894                 cmd[strlen(cmd)-1] = '\0';
2895         }
2896
2897         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
2898         {
2899                 cmd[strlen(cmd)-1] = '\0';
2900         }
2901
2902         if (!strcmp(cmd,""))
2903         {
2904                 return;
2905         }
2906         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
2907         tidystring(cmd);
2908         if ((user) && (cmd))
2909         {
2910                 process_command(user,cmd);
2911         }
2912 }
2913
2914 void DoSync(serverrec* serv, char* tcp_host)
2915 {
2916         char data[MAXBUF];
2917         log(DEBUG,"Sending sync");
2918         // send start of sync marker: Y <timestamp>
2919         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
2920         // except the ones its receiving it from.
2921         snprintf(data,MAXBUF,"Y %d",time(NULL));
2922         serv->SendPacket(data,tcp_host);
2923         // send users and channels
2924         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
2925         {
2926                 snprintf(data,MAXBUF,"N %d %s %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->ip,u->second->server,u->second->fullname);
2927                 serv->SendPacket(data,tcp_host);
2928                 if (strcmp(chlist(u->second),""))
2929                 {
2930                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
2931                         serv->SendPacket(data,tcp_host);
2932                 }
2933         }
2934         // send channel modes, topics etc...
2935         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
2936         {
2937                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
2938                 serv->SendPacket(data,tcp_host);
2939                 if (strcmp(c->second->topic,""))
2940                 {
2941                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
2942                         serv->SendPacket(data,tcp_host);
2943                 }
2944                 // send current banlist
2945
2946                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
2947                 {
2948                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
2949                         serv->SendPacket(data,tcp_host);
2950                 }
2951         }
2952         // sync global zlines, glines, etc
2953         sync_xlines(serv,tcp_host);
2954         snprintf(data,MAXBUF,"F %d",time(NULL));
2955         serv->SendPacket(data,tcp_host);
2956         log(DEBUG,"Sent sync");
2957         // ircd sends its serverlist after the end of sync here
2958 }
2959
2960
2961 void NetSendMyRoutingTable()
2962 {
2963         // send out a line saying what is reachable to us.
2964         // E.g. if A is linked to B C and D, send out:
2965         // $ A B C D
2966         // if its only linked to B and D send out:
2967         // $ A B D
2968         // if it has no links, dont even send out the line at all.
2969         char buffer[MAXBUF];
2970         sprintf(buffer,"$ %s",ServerName);
2971         bool sendit = false;
2972         for (int i = 0; i < 32; i++)
2973         {
2974                 if (me[i] != NULL)
2975                 {
2976                         for (int j = 0; j < me[i]->connectors.size(); j++)
2977                         {
2978                                 if (me[i]->connectors[j].GetState() != STATE_DISCONNECTED)
2979                                 {
2980                                         strncat(buffer," ",MAXBUF);
2981                                         strncat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
2982                                         sendit = true;
2983                                 }
2984                         }
2985                 }
2986         }
2987         if (sendit)
2988                 NetSendToAll(buffer);
2989 }
2990
2991
2992 void DoSplit(const char* params)
2993 {
2994         bool go_again = true;
2995         while (go_again)
2996         {
2997                 go_again = false;
2998                 for (int i = 0; i < 32; i++)
2999                 {
3000                         if (me[i] != NULL)
3001                         {
3002                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3003                                 {
3004                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3005                                         {
3006                                                 j->routes.clear();
3007                                                 j->CloseConnection();
3008                                                 me[i]->connectors.erase(j);
3009                                                 go_again = true;
3010                                                 break;
3011                                         }
3012                                 }
3013                         }
3014                 }
3015         }
3016         log(DEBUG,"Removed server. Will remove clients...");
3017         // iterate through the userlist and remove all users on this server.
3018         // because we're dealing with a mesh, we dont have to deal with anything
3019         // "down-route" from this server (nice huh)
3020         go_again = true;
3021         char reason[MAXBUF];
3022         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3023         while (go_again)
3024         {
3025                 go_again = false;
3026                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3027                 {
3028                         if (!strcasecmp(u->second->server,params))
3029                         {
3030                                 kill_link(u->second,reason);
3031                                 go_again = true;
3032                                 break;
3033                         }
3034                 }
3035         }
3036 }
3037
3038 // removes a server. Will NOT remove its users!
3039
3040 void RemoveServer(const char* name)
3041 {
3042         bool go_again = true;
3043         while (go_again)
3044         {
3045                 go_again = false;
3046                 for (int i = 0; i < 32; i++)
3047                 {
3048                         if (me[i] != NULL)
3049                         {
3050                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3051                                 {
3052                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3053                                         {
3054                                                 j->routes.clear();
3055                                                 j->CloseConnection();
3056                                                 me[i]->connectors.erase(j);
3057                                                 go_again = true;
3058                                                 break;
3059                                         }
3060                                 }
3061                         }
3062                 }
3063         }
3064 }
3065
3066
3067 int reap_counter = 0;
3068
3069 int InspIRCd(void)
3070 {
3071         struct sockaddr_in client, server;
3072         char addrs[MAXBUF][255];
3073         int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
3074         socklen_t length;
3075         int count = 0, scanDetectTrigger = TRUE, showBanner = FALSE;
3076         int selectResult = 0, selectResult2 = 0;
3077         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3078         char resolvedHost[MAXBUF];
3079         fd_set selectFds;
3080         struct timeval tv;
3081
3082         log_file = fopen("ircd.log","a+");
3083         if (!log_file)
3084         {
3085                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3086                 Exit(ERROR);
3087         }
3088
3089         log(DEBUG,"InspIRCd: startup: begin");
3090         log(DEBUG,"$Id$");
3091         if (geteuid() == 0)
3092         {
3093                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3094                 Exit(ERROR);
3095                 log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
3096         }
3097         SetupCommandTable();
3098         log(DEBUG,"InspIRCd: startup: default command table set up");
3099
3100         ReadConfig();
3101         if (strcmp(DieValue,""))
3102         {
3103                 printf("WARNING: %s\n\n",DieValue);
3104                 exit(0);
3105         }
3106         log(DEBUG,"InspIRCd: startup: read config");
3107
3108         int count2 = 0, count3 = 0;
3109
3110         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3111         {
3112                 ConfValue("bind","port",count,configToken,&config_f);
3113                 ConfValue("bind","address",count,Addr,&config_f);
3114                 ConfValue("bind","type",count,Type,&config_f);
3115                 if (!strcmp(Type,"servers"))
3116                 {
3117                         char Default[MAXBUF];
3118                         strcpy(Default,"no");
3119                         ConfValue("bind","default",count,Default,&config_f);
3120                         if (strchr(Default,'y'))
3121                         {
3122                                 defaultRoute = count3;
3123                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3124                         }
3125                         me[count3] = new serverrec(ServerName,100L,false);
3126                         me[count3]->CreateListener(Addr,atoi(configToken));
3127                         count3++;
3128                 }
3129                 else
3130                 {
3131                         ports[count2] = atoi(configToken);
3132                         strcpy(addrs[count2],Addr);
3133                         count2++;
3134                 }
3135                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3136         }
3137         portCount = count2;
3138         UDPportCount = count3;
3139
3140         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3141
3142         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3143
3144         printf("\n");
3145
3146         /* BugFix By Craig! :p */
3147         count = 0;
3148         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3149         {
3150                 char modfile[MAXBUF];
3151                 ConfValue("module","name",count2,configToken,&config_f);
3152                 sprintf(modfile,"%s/%s",MOD_PATH,configToken,&config_f);
3153                 printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
3154                 log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
3155                 /* If The File Doesnt exist, Trying to load it
3156                  * Will Segfault the IRCd.. So, check to see if
3157                  * it Exists, Before Proceeding. */
3158                 if (FileExists(modfile))
3159                 {
3160                         factory[count] = new ircd_module(modfile);
3161                         if (factory[count]->LastError())
3162                         {
3163                                 log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
3164                                 sprintf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
3165                                 Exit(ERROR);
3166                         }
3167                         if (factory[count]->factory)
3168                         {
3169                                 modules[count] = factory[count]->factory->CreateModule();
3170                                 /* save the module and the module's classfactory, if
3171                                  * this isnt done, random crashes can occur :/ */
3172                                 module_names.push_back(modfile);
3173                         }
3174                         else
3175                         {
3176                                 log(DEBUG,"Unable to load %s",modfile);
3177                                 sprintf("Unable to load %s\nExiting...\n",modfile);
3178                                 Exit(ERROR);
3179                         }
3180                         /* Increase the Count */
3181                         count++;
3182                 }
3183                 else
3184                 {
3185                         log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
3186                         printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
3187                 }
3188         }
3189         MODCOUNT = count - 1;
3190         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3191
3192         printf("\nInspIRCd is now running!\n");
3193
3194         startup_time = time(NULL);
3195
3196         if (nofork)
3197         {
3198                 log(VERBOSE,"Not forking as -nofork was specified");
3199         }
3200         else
3201         {
3202                 if (DaemonSeed() == ERROR)
3203                 {
3204                         log(DEBUG,"InspIRCd: startup: can't daemonise");
3205                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3206                         Exit(ERROR);
3207                 }
3208         }
3209
3210
3211         /* setup select call */
3212         FD_ZERO(&selectFds);
3213         log(DEBUG,"InspIRCd: startup: zero selects");
3214         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3215
3216         for (count = 0; count < portCount; count++)
3217         {
3218                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3219                 {
3220                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3221                         return(ERROR);
3222                 }
3223                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3224                 {
3225                         log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
3226                 }
3227                 else    /* well we at least bound to one socket so we'll continue */
3228                 {
3229                         boundPortCount++;
3230                 }
3231         }
3232
3233         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3234
3235         /* if we didn't bind to anything then abort */
3236         if (boundPortCount == 0)
3237         {
3238                 log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
3239                 return (ERROR);
3240         }
3241
3242
3243         length = sizeof (client);
3244         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3245
3246         /* main loop, this never returns */
3247         for (;;)
3248         {
3249 #ifdef _POSIX_PRIORITY_SCHEDULING
3250                 sched_yield();
3251 #endif
3252                 // update the status of klines, etc
3253                 expire_lines();
3254
3255                 fd_set sfd;
3256                 timeval tval;
3257                 FD_ZERO(&sfd);
3258
3259                 user_hash::iterator count2 = clientlist.begin();
3260
3261                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3262                 // them in a list, then reap the list every second or so.
3263                 if (reap_counter>300)
3264                 {
3265                         if (fd_reap.size() > 0)
3266                         {
3267                                 for( int n = 0; n < fd_reap.size(); n++)
3268                                 {
3269                                         Blocking(fd_reap[n]);
3270                                         close(fd_reap[n]);
3271                                         NonBlocking(fd_reap[n]);
3272                                 }
3273                         }
3274                         fd_reap.clear();
3275                         reap_counter=0;
3276                 }
3277                 reap_counter++;
3278
3279                 fd_set serverfds;
3280                 FD_ZERO(&serverfds);
3281                 timeval tvs;
3282
3283                 for (int x = 0; x != UDPportCount; x++)
3284                 {
3285                         FD_SET(me[x]->fd, &serverfds);
3286                 }
3287
3288                 tvs.tv_usec = 0;
3289                 tvs.tv_sec = 0;
3290
3291                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3292                 if (servresult > 0)
3293                 {
3294                         for (int x = 0; x != UDPportCount; x++)
3295                         {
3296                                 if (FD_ISSET (me[x]->fd, &serverfds))
3297                                 {
3298                                         char remotehost[MAXBUF],resolved[MAXBUF];
3299                                         length = sizeof (client);
3300                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3301                                         strncpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3302                                         if(CleanAndResolve(resolved, remotehost) != TRUE)
3303                                         {
3304                                                 strncpy(resolved,remotehost,MAXBUF);
3305                                         }
3306                                         // add to this connections ircd_connector vector
3307                                         // *FIX* - we need the LOCAL port not the remote port in &client!
3308                                         me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3309                                 }
3310                         }
3311                 }
3312
3313                 for (int x = 0; x < UDPportCount; x++)
3314                 {
3315                         std::deque<std::string> msgs;
3316                         msgs.clear();
3317                         if (me[x]->RecvPacket(msgs, tcp_host))
3318                         {
3319                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3320                                 {
3321                                         char udp_msg[MAXBUF];
3322                                         strncpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3323                                         if (strlen(udp_msg)<1)
3324                                         {
3325                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3326                                                 break;
3327                                         }
3328                                         // during a netburst, send all data to all other linked servers
3329                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3330                                         {
3331                                                 if (is_uline(tcp_host))
3332                                                 {
3333                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3334                                                         {
3335                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3336                                                         }
3337                                                 }
3338                                                 else
3339                                                         NetSendToAllExcept(tcp_host,udp_msg);
3340                                         }
3341                                         FOREACH_MOD OnPacketReceive(udp_msg);
3342                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3343                                 }
3344                                 goto label;
3345                         }
3346                 }
3347
3348
3349         while (count2 != clientlist.end())
3350         {
3351                 char data[10240];
3352                 tval.tv_usec = tval.tv_sec = 0;
3353                 FD_ZERO(&sfd);
3354                 int total_in_this_set = 0;
3355
3356                 user_hash::iterator xcount = count2;
3357                 user_hash::iterator endingiter = count2;
3358
3359                 if (!count2->second) break;
3360
3361                 if (count2->second)
3362                 if (count2->second->fd != 0)
3363                 {
3364                         // assemble up to 64 sockets into an fd_set
3365                         // to implement a pooling mechanism.
3366                         //
3367                         // This should be up to 64x faster than the
3368                         // old implementation.
3369                         while (total_in_this_set < 64)
3370                         {
3371                                 if (count2 != clientlist.end())
3372                                 {
3373                                         // we don't check the state of remote users.
3374                                         if (count2->second->fd > 0)
3375                                         {
3376                                                 FD_SET (count2->second->fd, &sfd);
3377
3378                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3379                                                 // their connection class.
3380                                                 if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
3381                                                 {
3382                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3383                                                         kill_link(count2->second,"Registration timeout");
3384                                                         goto label;
3385                                                 }
3386                                                 if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3387                                                 {
3388                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3389                                                         {
3390                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3391                                                                 kill_link(count2->second,"Ping timeout");
3392                                                                 goto label;
3393                                                         }
3394                                                         Write(count2->second->fd,"PING :%s",ServerName);
3395                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3396                                                         count2->second->lastping = 0;
3397                                                         count2->second->nping = time(NULL)+120;
3398                                                 }
3399                                         }
3400                                         count2++;
3401                                         total_in_this_set++;
3402                                 }
3403                                 else break;
3404                         }
3405
3406                         endingiter = count2;
3407                         count2 = xcount; // roll back to where we were
3408
3409                         int v = 0;
3410
3411                         tval.tv_usec = 0;
3412                         tval.tv_sec = 0;
3413                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3414
3415                         // now loop through all of the items in this pool if any are waiting
3416                         //if (selectResult2 > 0)
3417                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3418                         {
3419
3420 #ifdef _POSIX_PRIORITY_SCHEDULING
3421                                 sched_yield();
3422 #endif
3423
3424                                 result = EAGAIN;
3425                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3426                                 {
3427                                         log(DEBUG,"Reading fd %d",count2a->second->fd);
3428                                         memset(data, 0, 10240);
3429                                         result = read(count2a->second->fd, data, 10240);
3430
3431                                         if (result)
3432                                         {
3433                                                 if (result > 0)
3434                                                         log(DEBUG,"Read %d characters from socket",result);
3435                                                 userrec* current = count2a->second;
3436                                                 int currfd = current->fd;
3437                                                 char* l = strtok(data,"\n");
3438                                                 int floodlines = 0;
3439                                                 while (l)
3440                                                 {
3441                                                         floodlines++;
3442                                                         if ((floodlines > current->flood) && (current->flood != 0))
3443                                                         {
3444                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3445                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3446                                                                 kill_link(current,"Excess flood");
3447                                                                 goto label;
3448                                                         }
3449                                                         char sanitized[NetBufferSize];
3450                                                         memset(sanitized, 0, NetBufferSize);
3451                                                         int ptt = 0;
3452                                                         for (int pt = 0; pt < strlen(l); pt++)
3453                                                         {
3454                                                                 if (l[pt] != '\r')
3455                                                                 {
3456                                                                         sanitized[ptt++] = l[pt];
3457                                                                 }
3458                                                         }
3459                                                         sanitized[ptt] = '\0';
3460                                                         if (strlen(sanitized))
3461                                                         {
3462
3463
3464                                                                 // we're gonna re-scan to check if the nick is gone, after every
3465                                                                 // command - if it has, we're gonna bail
3466                                                                 bool find_again = false;
3467                                                                 process_buffer(sanitized,current);
3468
3469                                                                 // look for the user's record in case it's changed
3470                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3471                                                                 {
3472                                                                         if (c2->second->fd == currfd)
3473                                                                         {
3474                                                                                 // found again, update pointer
3475                                                                                 current == c2->second;
3476                                                                                 find_again = true;
3477                                                                                 break;
3478                                                                         }
3479                                                                 }
3480                                                                 if (!find_again)
3481                                                                         goto label;
3482
3483                                                         }
3484                                                         l = strtok(NULL,"\n");
3485                                                 }
3486                                                 goto label;
3487                                         }
3488
3489                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
3490                                         {
3491                                                 log(DEBUG,"killing: %s",count2a->second->nick);
3492                                                 kill_link(count2a->second,strerror(errno));
3493                                                 goto label;
3494                                         }
3495                                 }
3496                                 // result EAGAIN means nothing read
3497                                 if (result == EAGAIN)
3498                                 {
3499                                 }
3500                                 else
3501                                 if (result == 0)
3502                                 {
3503                                         if (count2->second)
3504                                         {
3505                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
3506                                                 kill_link(count2a->second,"Client exited");
3507                                                 // must bail here? kill_link removes the hash, corrupting the iterator
3508                                                 log(DEBUG,"Bailing from client exit");
3509                                                 goto label;
3510                                         }
3511                                 }
3512                                 else if (result > 0)
3513                                 {
3514                                 }
3515                         }
3516                 }
3517                 for (int q = 0; q < total_in_this_set; q++)
3518                 {
3519                         // there is no iterator += operator :(
3520                         //if (count2 != clientlist.end())
3521                         //{
3522                                 count2++;
3523                         //}
3524                 }
3525         }
3526
3527         // set up select call
3528         for (count = 0; count < boundPortCount; count++)
3529         {
3530                 FD_SET (openSockfd[count], &selectFds);
3531         }
3532
3533         tv.tv_usec = 1;
3534         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
3535
3536         /* select is reporting a waiting socket. Poll them all to find out which */
3537         if (selectResult > 0)
3538         {
3539                 char target[MAXBUF], resolved[MAXBUF];
3540                 for (count = 0; count < boundPortCount; count++)
3541                 {
3542                         if (FD_ISSET (openSockfd[count], &selectFds))
3543                         {
3544                                 length = sizeof (client);
3545                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
3546
3547                                 address_cache::iterator iter = IP.find(client.sin_addr);
3548                                 bool iscached = false;
3549                                 if (iter == IP.end())
3550                                 {
3551                                         /* ip isn't in cache, add it */
3552                                         strncpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
3553                                         if(CleanAndResolve(resolved, target) != TRUE)
3554                                         {
3555                                                 strncpy(resolved,target,MAXBUF);
3556                                         }
3557                                         /* hostname now in 'target' */
3558                                         IP[client.sin_addr] = new string(resolved);
3559                                         /* hostname in cache */
3560                                 }
3561                                 else
3562                                 {
3563                                         /* found ip (cached) */
3564                                         strncpy(resolved, iter->second->c_str(), MAXBUF);
3565                                         iscached = true;
3566                                 }
3567
3568                                 if (incomingSockfd < 0)
3569                                 {
3570                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
3571                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
3572                                 }
3573                                 else
3574                                 {
3575                                         AddClient(incomingSockfd, resolved, ports[count], iscached, inet_ntoa (client.sin_addr));
3576                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
3577                                 }
3578                                 goto label;
3579                         }
3580                 }
3581         }
3582         label:
3583         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
3584 }
3585 /* not reached */
3586 close (incomingSockfd);
3587 }
3588