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                 int MOD_RESULT = 0;
1314                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1315                 if (MOD_RESULT == 1) {
1316                         return NULL;
1317                 }
1318
1319                 /* create a new one */
1320                 log(DEBUG,"add_channel: creating: %s",cname);
1321                 {
1322                         chanlist[cname] = new chanrec();
1323
1324                         strcpy(chanlist[cname]->name, cname);
1325                         chanlist[cname]->topiclock = 1;
1326                         chanlist[cname]->noexternal = 1;
1327                         chanlist[cname]->created = time(NULL);
1328                         strcpy(chanlist[cname]->topic, "");
1329                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1330                         chanlist[cname]->topicset = 0;
1331                         Ptr = chanlist[cname];
1332                         log(DEBUG,"add_channel: created: %s",cname);
1333                         /* set created to 2 to indicate user
1334                          * is the first in the channel
1335                          * and should be given ops */
1336                         created = 2;
1337                 }
1338         }
1339         else
1340         {
1341                 /* channel exists, just fish out a pointer to its struct */
1342                 Ptr = FindChan(cname);
1343                 if (Ptr)
1344                 {
1345                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1346
1347                         // the override flag allows us to bypass channel modes
1348                         // and bans (used by servers)
1349                         if (!override)
1350                         {
1351                                 int MOD_RESULT = 0;
1352                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1353                                 if (MOD_RESULT == 1) {
1354                                         return NULL;
1355                                 }
1356
1357                                 if (MOD_RESULT == 0)
1358                                 {
1359
1360                                         if (strcmp(Ptr->key,""))
1361                                         {
1362                                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1363                                                 if (!key)
1364                                                 {
1365                                                         log(DEBUG,"add_channel: no key given in JOIN");
1366                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1367                                                         return NULL;
1368                                                 }
1369                                                 else
1370                                                 {
1371                                                         log(DEBUG,"key at %p is %s",key,key);
1372                                                         if (strcasecmp(key,Ptr->key))
1373                                                         {
1374                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1375                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1376                                                                 return NULL;
1377                                                         }
1378                                                 }
1379                                         }
1380                                         log(DEBUG,"add_channel: no key");
1381
1382                                         if (Ptr->inviteonly)
1383                                         {
1384                                                 log(DEBUG,"add_channel: channel is +i");
1385                                                 if (user->IsInvited(Ptr->name))
1386                                                 {
1387                                                         /* user was invited to channel */
1388                                                         /* there may be an optional channel NOTICE here */
1389                                                 }
1390                                                 else
1391                                                 {
1392                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1393                                                         return NULL;
1394                                                 }
1395                                         }
1396                                         log(DEBUG,"add_channel: channel is not +i");
1397
1398                                         if (Ptr->limit)
1399                                         {
1400                                                 if (usercount(Ptr) == Ptr->limit)
1401                                                 {
1402                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1403                                                         return NULL;
1404                                                 }
1405                                         }
1406
1407                                         log(DEBUG,"add_channel: about to walk banlist");
1408
1409                                         /* check user against the channel banlist */
1410                                         if (Ptr)
1411                                         {
1412                                                 if (Ptr->bans.size())
1413                                                 {
1414                                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1415                                                         {
1416                                                                 if (match(user->GetFullHost(),i->data))
1417                                                                 {
1418                                                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1419                                                                         return NULL;
1420                                                                 }
1421                                                         }
1422                                                 }
1423                                         }
1424
1425                                         log(DEBUG,"add_channel: bans checked");
1426
1427                                 }
1428
1429
1430                                 if ((Ptr) && (user))
1431                                 {
1432                                         user->RemoveInvite(Ptr->name);
1433                                 }
1434
1435                                 log(DEBUG,"add_channel: invites removed");
1436
1437                         }
1438                         else
1439                         {
1440                                 log(DEBUG,"Overridden checks");
1441                         }
1442
1443
1444                 }
1445                 created = 1;
1446         }
1447
1448         log(DEBUG,"Passed channel checks");
1449
1450         for (int i =0; i != MAXCHANS; i++)
1451         {
1452                 log(DEBUG,"Check location %d",i);
1453                 if (user->chans[i].channel == NULL)
1454                 {
1455                         log(DEBUG,"Adding into their channel list at location %d",i);
1456
1457                         if (created == 2)
1458                         {
1459                                 /* first user in is given ops */
1460                                 user->chans[i].uc_modes = UCMODE_OP;
1461                         }
1462                         else
1463                         {
1464                                 user->chans[i].uc_modes = 0;
1465                         }
1466                         user->chans[i].channel = Ptr;
1467                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1468
1469                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1470                         {
1471                                 // use the stamdard J token with no privilages.
1472                                 char buffer[MAXBUF];
1473                                 if (created == 2)
1474                                 {
1475                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1476                                 }
1477                                 else
1478                                 {
1479                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1480                                 }
1481                                 NetSendToAll(buffer);
1482                         }
1483
1484                         log(DEBUG,"Sent JOIN to client");
1485
1486                         if (Ptr->topicset)
1487                         {
1488                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1489                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1490                         }
1491                         userlist(user,Ptr);
1492                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1493                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1494                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1495                         FOREACH_MOD OnUserJoin(user,Ptr);
1496                         return Ptr;
1497                 }
1498         }
1499         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1500         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1501         return NULL;
1502 }
1503
1504 /* remove a channel from a users record, and remove the record from memory
1505  * if the channel has become empty */
1506
1507 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1508 {
1509         if ((!user) || (!cname))
1510         {
1511                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1512                 return NULL;
1513         }
1514
1515         chanrec* Ptr;
1516         int created = 0;
1517
1518         if ((!cname) || (!user))
1519         {
1520                 return NULL;
1521         }
1522
1523         Ptr = FindChan(cname);
1524
1525         if (!Ptr)
1526         {
1527                 return NULL;
1528         }
1529
1530         FOREACH_MOD OnUserPart(user,Ptr);
1531         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1532
1533         for (int i =0; i != MAXCHANS; i++)
1534         {
1535                 /* zap it from the channel list of the user */
1536                 if (user->chans[i].channel == Ptr)
1537                 {
1538                         if (reason)
1539                         {
1540                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1541
1542                                 if (!local)
1543                                 {
1544                                         char buffer[MAXBUF];
1545                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1546                                         NetSendToAll(buffer);
1547                                 }
1548
1549
1550                         }
1551                         else
1552                         {
1553                                 if (!local)
1554                                 {
1555                                         char buffer[MAXBUF];
1556                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1557                                         NetSendToAll(buffer);
1558                                 }
1559
1560                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1561                         }
1562                         user->chans[i].uc_modes = 0;
1563                         user->chans[i].channel = NULL;
1564                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1565                         break;
1566                 }
1567         }
1568
1569         /* if there are no users left on the channel */
1570         if (!usercount(Ptr))
1571         {
1572                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1573
1574                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1575
1576                 /* kill the record */
1577                 if (iter != chanlist.end())
1578                 {
1579                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1580                         delete iter->second;
1581                         chanlist.erase(iter);
1582                 }
1583         }
1584 }
1585
1586
1587 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1588 {
1589         if ((!src) || (!user) || (!Ptr) || (!reason))
1590         {
1591                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1592                 return;
1593         }
1594
1595         int i = 0;
1596         int created = 0;
1597
1598         if ((!Ptr) || (!user) || (!src))
1599         {
1600                 return;
1601         }
1602
1603         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1604
1605         if (!has_channel(user,Ptr))
1606         {
1607                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1608                 return;
1609         }
1610
1611         int MOD_RESULT = 0;
1612         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1613
1614         if (MOD_RESULT == ACR_DENY)
1615                 return;
1616
1617         if (MOD_RESULT == ACR_DEFAULT)
1618         {
1619                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1620                 {
1621                         if (cstatus(src,Ptr) == STATUS_HOP)
1622                         {
1623                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1624                         }
1625                         else
1626                         {
1627                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1628                         }
1629
1630                         return;
1631                 }
1632         }
1633
1634         for (int i =0; i != MAXCHANS; i++)
1635         {
1636                 /* zap it from the channel list of the user */
1637                 if (user->chans[i].channel)
1638                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1639                 {
1640                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1641                         user->chans[i].uc_modes = 0;
1642                         user->chans[i].channel = NULL;
1643                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1644                         break;
1645                 }
1646         }
1647
1648         /* if there are no users left on the channel */
1649         if (!usercount(Ptr))
1650         {
1651                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1652
1653                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1654
1655                 /* kill the record */
1656                 if (iter != chanlist.end())
1657                 {
1658                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1659                         delete iter->second;
1660                         chanlist.erase(iter);
1661                 }
1662         }
1663 }
1664
1665
1666
1667
1668 /* This function pokes and hacks at a parameter list like the following:
1669  *
1670  * PART #winbot, #darkgalaxy :m00!
1671  *
1672  * to turn it into a series of individual calls like this:
1673  *
1674  * PART #winbot :m00!
1675  * PART #darkgalaxy :m00!
1676  *
1677  * The seperate calls are sent to a callback function provided by the caller
1678  * (the caller will usually call itself recursively). The callback function
1679  * must be a command handler. Calling this function on a line with no list causes
1680  * no action to be taken. You must provide a starting and ending parameter number
1681  * where the range of the list can be found, useful if you have a terminating
1682  * parameter as above which is actually not part of the list, or parameters
1683  * before the actual list as well. This code is used by many functions which
1684  * can function as "one to list" (see the RFC) */
1685
1686 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1687 {
1688         char plist[MAXBUF];
1689         char *param;
1690         char *pars[32];
1691         char blog[32][MAXBUF];
1692         char blog2[32][MAXBUF];
1693         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1694         char keystr[MAXBUF];
1695         char moo[MAXBUF];
1696
1697         for (int i = 0; i <32; i++)
1698                 strcpy(blog[i],"");
1699
1700         for (int i = 0; i <32; i++)
1701                 strcpy(blog2[i],"");
1702
1703         strcpy(moo,"");
1704         for (int i = 0; i <10; i++)
1705         {
1706                 if (!parameters[i])
1707                 {
1708                         parameters[i] = moo;
1709                 }
1710         }
1711         if (joins)
1712         {
1713                 if (pcnt > 1) /* we have a key to copy */
1714                 {
1715                         strcpy(keystr,parameters[1]);
1716                 }
1717         }
1718
1719         if (!parameters[start])
1720         {
1721                 return 0;
1722         }
1723         if (!strchr(parameters[start],','))
1724         {
1725                 return 0;
1726         }
1727         strcpy(plist,"");
1728         for (int i = start; i <= end; i++)
1729         {
1730                 if (parameters[i])
1731                 {
1732                         strcat(plist,parameters[i]);
1733                 }
1734         }
1735
1736         j = 0;
1737         param = plist;
1738
1739         t = strlen(plist);
1740         for (int i = 0; i < t; i++)
1741         {
1742                 if (plist[i] == ',')
1743                 {
1744                         plist[i] = '\0';
1745                         strcpy(blog[j++],param);
1746                         param = plist+i+1;
1747                         if (j>20)
1748                         {
1749                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1750                                 return 1;
1751                         }
1752                 }
1753         }
1754         strcpy(blog[j++],param);
1755         total = j;
1756
1757         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1758         {
1759                 strcat(keystr,",");
1760         }
1761
1762         if ((joins) && (keystr))
1763         {
1764                 if (strchr(keystr,','))
1765                 {
1766                         j = 0;
1767                         param = keystr;
1768                         t2 = strlen(keystr);
1769                         for (int i = 0; i < t2; i++)
1770                         {
1771                                 if (keystr[i] == ',')
1772                                 {
1773                                         keystr[i] = '\0';
1774                                         strcpy(blog2[j++],param);
1775                                         param = keystr+i+1;
1776                                 }
1777                         }
1778                         strcpy(blog2[j++],param);
1779                         total2 = j;
1780                 }
1781         }
1782
1783         for (j = 0; j < total; j++)
1784         {
1785                 if (blog[j])
1786                 {
1787                         pars[0] = blog[j];
1788                 }
1789                 for (q = end; q < pcnt-1; q++)
1790                 {
1791                         if (parameters[q+1])
1792                         {
1793                                 pars[q-end+1] = parameters[q+1];
1794                         }
1795                 }
1796                 if ((joins) && (parameters[1]))
1797                 {
1798                         if (pcnt > 1)
1799                         {
1800                                 pars[1] = blog2[j];
1801                         }
1802                         else
1803                         {
1804                                 pars[1] = NULL;
1805                         }
1806                 }
1807                 /* repeatedly call the function with the hacked parameter list */
1808                 if ((joins) && (pcnt > 1))
1809                 {
1810                         if (pars[1])
1811                         {
1812                                 // pars[1] already set up and containing key from blog2[j]
1813                                 fn(pars,2,u);
1814                         }
1815                         else
1816                         {
1817                                 pars[1] = parameters[1];
1818                                 fn(pars,2,u);
1819                         }
1820                 }
1821                 else
1822                 {
1823                         fn(pars,pcnt-(end-start),u);
1824                 }
1825         }
1826
1827         return 1;
1828 }
1829
1830
1831
1832 void kill_link(userrec *user,const char* r)
1833 {
1834         user_hash::iterator iter = clientlist.find(user->nick);
1835
1836         char reason[MAXBUF];
1837
1838         strncpy(reason,r,MAXBUF);
1839
1840         if (strlen(reason)>MAXQUIT)
1841         {
1842                 reason[MAXQUIT-1] = '\0';
1843         }
1844
1845         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1846         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1847         log(DEBUG,"closing fd %d",user->fd);
1848
1849         /* bugfix, cant close() a nonblocking socket (sux!) */
1850         if (user->registered == 7) {
1851                 FOREACH_MOD OnUserQuit(user);
1852                 WriteCommonExcept(user,"QUIT :%s",reason);
1853
1854                 // Q token must go to ALL servers!!!
1855                 char buffer[MAXBUF];
1856                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1857                 NetSendToAll(buffer);
1858         }
1859
1860         /* push the socket on a stack of sockets due to be closed at the next opportunity
1861          * 'Client exited' is an exception to this as it means the client side has already
1862          * closed the socket, we don't need to do it.
1863          */
1864         fd_reap.push_back(user->fd);
1865
1866         bool do_purge = false;
1867
1868         if (user->registered == 7) {
1869                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
1870                 AddWhoWas(user);
1871         }
1872
1873         if (iter != clientlist.end())
1874         {
1875                 log(DEBUG,"deleting user hash value %d",iter->second);
1876                 if ((iter->second) && (user->registered == 7)) {
1877                         delete iter->second;
1878                 }
1879                 clientlist.erase(iter);
1880         }
1881
1882         if (user->registered == 7) {
1883                 purge_empty_chans();
1884         }
1885 }
1886
1887 void kill_link_silent(userrec *user,const char* r)
1888 {
1889         user_hash::iterator iter = clientlist.find(user->nick);
1890
1891         char reason[MAXBUF];
1892
1893         strncpy(reason,r,MAXBUF);
1894
1895         if (strlen(reason)>MAXQUIT)
1896         {
1897                 reason[MAXQUIT-1] = '\0';
1898         }
1899
1900         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1901         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1902         log(DEBUG,"closing fd %d",user->fd);
1903
1904         /* bugfix, cant close() a nonblocking socket (sux!) */
1905         if (user->registered == 7) {
1906                 FOREACH_MOD OnUserQuit(user);
1907                 WriteCommonExcept(user,"QUIT :%s",reason);
1908
1909                 // Q token must go to ALL servers!!!
1910                 char buffer[MAXBUF];
1911                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1912                 NetSendToAll(buffer);
1913         }
1914
1915         /* push the socket on a stack of sockets due to be closed at the next opportunity
1916          * 'Client exited' is an exception to this as it means the client side has already
1917          * closed the socket, we don't need to do it.
1918          */
1919         fd_reap.push_back(user->fd);
1920
1921         bool do_purge = false;
1922
1923         if (iter != clientlist.end())
1924         {
1925                 log(DEBUG,"deleting user hash value %d",iter->second);
1926                 if ((iter->second) && (user->registered == 7)) {
1927                         delete iter->second;
1928                 }
1929                 clientlist.erase(iter);
1930         }
1931
1932         if (user->registered == 7) {
1933                 purge_empty_chans();
1934         }
1935 }
1936
1937
1938
1939 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1940
1941 char* Passwd(userrec *user)
1942 {
1943         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1944         {
1945                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
1946                 {
1947                         return i->pass;
1948                 }
1949         }
1950         return "";
1951 }
1952
1953 bool IsDenied(userrec *user)
1954 {
1955         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1956         {
1957                 if (match(user->host,i->host) && (i->type == CC_DENY))
1958                 {
1959                         return true;
1960                 }
1961         }
1962         return false;
1963 }
1964
1965
1966
1967
1968 /* sends out an error notice to all connected clients (not to be used
1969  * lightly!) */
1970
1971 void send_error(char *s)
1972 {
1973         log(DEBUG,"send_error: %s",s);
1974         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1975         {
1976                 if (isnick(i->second->nick))
1977                 {
1978                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
1979                 }
1980                 else
1981                 {
1982                         // fix - unregistered connections receive ERROR, not NOTICE
1983                         Write(i->second->fd,"ERROR :%s",s);
1984                 }
1985         }
1986 }
1987
1988 void Error(int status)
1989 {
1990         signal (SIGALRM, SIG_IGN);
1991         signal (SIGPIPE, SIG_IGN);
1992         signal (SIGTERM, SIG_IGN);
1993         signal (SIGABRT, SIG_IGN);
1994         signal (SIGSEGV, SIG_IGN);
1995         signal (SIGURG, SIG_IGN);
1996         signal (SIGKILL, SIG_IGN);
1997         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
1998         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
1999         exit(status);
2000 }
2001
2002
2003 int main(int argc, char *argv[])
2004 {
2005         Start();
2006         srand(time(NULL));
2007         log(DEBUG,"*** InspIRCd starting up!");
2008         if (!FileExists(CONFIG_FILE))
2009         {
2010                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2011                 log(DEBUG,"main: no config");
2012                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2013                 Exit(ERROR);
2014         }
2015         if (argc > 1) {
2016                 if (!strcmp(argv[1],"-nofork")) {
2017                         nofork = true;
2018                 }
2019         }
2020         if (InspIRCd() == ERROR)
2021         {
2022                 log(DEBUG,"main: daemon function bailed");
2023                 printf("ERROR: could not initialise. Shutting down.\n");
2024                 Exit(ERROR);
2025         }
2026         Exit(TRUE);
2027         return 0;
2028 }
2029
2030 template<typename T> inline string ConvToStr(const T &in)
2031 {
2032         stringstream tmp;
2033         if (!(tmp << in)) return string();
2034         return tmp.str();
2035 }
2036
2037 /* re-allocates a nick in the user_hash after they change nicknames,
2038  * returns a pointer to the new user as it may have moved */
2039
2040 userrec* ReHashNick(char* Old, char* New)
2041 {
2042         user_hash::iterator newnick;
2043         user_hash::iterator oldnick = clientlist.find(Old);
2044
2045         log(DEBUG,"ReHashNick: %s %s",Old,New);
2046
2047         if (!strcasecmp(Old,New))
2048         {
2049                 log(DEBUG,"old nick is new nick, skipping");
2050                 return oldnick->second;
2051         }
2052
2053         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2054
2055         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2056
2057         clientlist[New] = new userrec();
2058         clientlist[New] = oldnick->second;
2059         /*delete oldnick->second; */
2060         clientlist.erase(oldnick);
2061
2062         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2063
2064         return clientlist[New];
2065 }
2066
2067 /* adds or updates an entry in the whowas list */
2068 void AddWhoWas(userrec* u)
2069 {
2070         user_hash::iterator iter = whowas.find(u->nick);
2071         userrec *a = new userrec();
2072         strcpy(a->nick,u->nick);
2073         strcpy(a->ident,u->ident);
2074         strcpy(a->dhost,u->dhost);
2075         strcpy(a->host,u->host);
2076         strcpy(a->fullname,u->fullname);
2077         strcpy(a->server,u->server);
2078         a->signon = u->signon;
2079
2080         /* MAX_WHOWAS:   max number of /WHOWAS items
2081          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2082          *               can be replaced by a newer one
2083          */
2084
2085         if (iter == whowas.end())
2086         {
2087                 if (whowas.size() == WHOWAS_MAX)
2088                 {
2089                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2090                         {
2091                                 // 3600 seconds in an hour ;)
2092                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
2093                                 {
2094                                         delete i->second;
2095                                         i->second = a;
2096                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2097                                         return;
2098                                 }
2099                         }
2100                 }
2101                 else
2102                 {
2103                         log(DEBUG,"added fresh WHOWAS entry");
2104                         whowas[a->nick] = a;
2105                 }
2106         }
2107         else
2108         {
2109                 log(DEBUG,"updated WHOWAS entry");
2110                 delete iter->second;
2111                 iter->second = a;
2112         }
2113 }
2114
2115
2116 /* add a client connection to the sockets list */
2117 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2118 {
2119         int i;
2120         int blocking = 1;
2121         char resolved[MAXBUF];
2122         string tempnick;
2123         char tn2[MAXBUF];
2124         user_hash::iterator iter;
2125
2126         tempnick = ConvToStr(socket) + "-unknown";
2127         sprintf(tn2,"%d-unknown",socket);
2128
2129         iter = clientlist.find(tempnick);
2130
2131         if (iter != clientlist.end()) return;
2132
2133         /*
2134          * It is OK to access the value here this way since we know
2135          * it exists, we just created it above.
2136          *
2137          * At NO other time should you access a value in a map or a
2138          * hash_map this way.
2139          */
2140         clientlist[tempnick] = new userrec();
2141
2142         NonBlocking(socket);
2143         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2144
2145         clientlist[tempnick]->fd = socket;
2146         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2147         strncpy(clientlist[tempnick]->host, host,160);
2148         strncpy(clientlist[tempnick]->dhost, host,160);
2149         strncpy(clientlist[tempnick]->server, ServerName,256);
2150         strncpy(clientlist[tempnick]->ident, "unknown",9);
2151         clientlist[tempnick]->registered = 0;
2152         clientlist[tempnick]->signon = time(NULL);
2153         clientlist[tempnick]->nping = time(NULL)+240;
2154         clientlist[tempnick]->lastping = 1;
2155         clientlist[tempnick]->port = port;
2156         strncpy(clientlist[tempnick]->ip,ip,32);
2157
2158         if (iscached)
2159         {
2160                 WriteServ(socket,"NOTICE Auth :Found your hostname (cached)...");
2161         }
2162         else
2163         {
2164                 WriteServ(socket,"NOTICE Auth :Looking up your hostname...");
2165         }
2166
2167         // set the registration timeout for this user
2168         unsigned long class_regtimeout = 90;
2169         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2170         {
2171                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2172                 {
2173                         class_regtimeout = (unsigned long)i->registration_timeout;
2174                         break;
2175                 }
2176         }
2177
2178         int class_flood = 0;
2179         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2180         {
2181                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2182                 {
2183                         class_flood = i->flood;
2184                         break;
2185                 }
2186         }
2187
2188         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
2189         clientlist[tempnick]->flood = class_flood;
2190
2191         for (int i = 0; i < MAXCHANS; i++)
2192         {
2193                 clientlist[tempnick]->chans[i].channel = NULL;
2194                 clientlist[tempnick]->chans[i].uc_modes = 0;
2195         }
2196
2197         if (clientlist.size() == MAXCLIENTS)
2198                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2199
2200         char* r = matches_zline(ip);
2201         if (r)
2202         {
2203                 char reason[MAXBUF];
2204                 snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2205                 kill_link(clientlist[tempnick],reason);
2206         }
2207 }
2208
2209
2210 int usercnt(void)
2211 {
2212         return clientlist.size();
2213 }
2214
2215
2216 int usercount_invisible(void)
2217 {
2218         int c = 0;
2219
2220         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2221         {
2222                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2223         }
2224         return c;
2225 }
2226
2227 int usercount_opers(void)
2228 {
2229         int c = 0;
2230
2231         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2232         {
2233                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2234         }
2235         return c;
2236 }
2237
2238 int usercount_unknown(void)
2239 {
2240         int c = 0;
2241
2242         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2243         {
2244                 if ((i->second->fd) && (i->second->registered != 7))
2245                         c++;
2246         }
2247         return c;
2248 }
2249
2250 long chancount(void)
2251 {
2252         return chanlist.size();
2253 }
2254
2255 long count_servs(void)
2256 {
2257         int c = 0;
2258         //for (int j = 0; j < 255; j++)
2259         //{
2260         //      if (servers[j] != NULL)
2261         //              c++;
2262         //}
2263         return c;
2264 }
2265
2266 long servercount(void)
2267 {
2268         return count_servs()+1;
2269 }
2270
2271 long local_count()
2272 {
2273         int c = 0;
2274         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2275         {
2276                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2277         }
2278         return c;
2279 }
2280
2281
2282 void ShowMOTD(userrec *user)
2283 {
2284         if (!MOTD.size())
2285         {
2286                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2287                 return;
2288         }
2289         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
2290         for (int i = 0; i != MOTD.size(); i++)
2291         {
2292                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
2293         }
2294         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
2295 }
2296
2297 void ShowRULES(userrec *user)
2298 {
2299         if (!RULES.size())
2300         {
2301                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2302                 return;
2303         }
2304         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2305         for (int i = 0; i != RULES.size(); i++)
2306         {
2307                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2308         }
2309         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2310 }
2311
2312 /* shows the message of the day, and any other on-logon stuff */
2313 void ConnectUser(userrec *user)
2314 {
2315         user->registered = 7;
2316         user->idle_lastmsg = time(NULL);
2317         log(DEBUG,"ConnectUser: %s",user->nick);
2318
2319         if (strcmp(Passwd(user),"") && (!user->haspassed))
2320         {
2321                 kill_link(user,"Invalid password");
2322                 return;
2323         }
2324         if (IsDenied(user))
2325         {
2326                 kill_link(user,"Unauthorised connection");
2327                 return;
2328         }
2329
2330         char match_against[MAXBUF];
2331         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2332         char* r = matches_gline(match_against);
2333         if (r)
2334         {
2335                 char reason[MAXBUF];
2336                 snprintf(reason,MAXBUF,"G-Lined: %s",r);
2337                 kill_link_silent(user,reason);
2338                 return;
2339         }
2340
2341         r = matches_kline(user->host);
2342         if (r)
2343         {
2344                 char reason[MAXBUF];
2345                 snprintf(reason,MAXBUF,"K-Lined: %s",r);
2346                 kill_link_silent(user,reason);
2347                 return;
2348         }
2349
2350         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2351         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2352         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2353         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2354         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2355         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);
2356         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);
2357         ShowMOTD(user);
2358         FOREACH_MOD OnUserConnect(user);
2359         WriteOpers("*** Client connecting on port %d: %s!%s@%s",user->port,user->nick,user->ident,user->host);
2360
2361         char buffer[MAXBUF];
2362         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);
2363         NetSendToAll(buffer);
2364 }
2365
2366 void handle_version(char **parameters, int pcnt, userrec *user)
2367 {
2368         char Revision[] = "$Revision$";
2369
2370         char *s1 = Revision;
2371         char *savept;
2372         char *v1 = strtok_r(s1," ",&savept);
2373         s1 = savept;
2374         char *v2 = strtok_r(s1," ",&savept);
2375         s1 = savept;
2376
2377         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2378 }
2379
2380
2381 // calls a handler function for a command
2382
2383 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2384 {
2385                 for (int i = 0; i < cmdlist.size(); i++)
2386                 {
2387                         if (!strcasecmp(cmdlist[i].command,commandname))
2388                         {
2389                                 if (cmdlist[i].handler_function)
2390                                 {
2391                                         if (pcnt>=cmdlist[i].min_params)
2392                                         {
2393                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2394                                                 {
2395                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2396                                                 }
2397                                         }
2398                                 }
2399                         }
2400                 }
2401 }
2402
2403 void DoSplitEveryone()
2404 {
2405         bool go_again = true;
2406         while (go_again)
2407         {
2408                 go_again = false;
2409                 for (int i = 0; i < 32; i++)
2410                 {
2411                         if (me[i] != NULL)
2412                         {
2413                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2414                                 {
2415                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2416                                         {
2417                                                 j->routes.clear();
2418                                                 j->CloseConnection();
2419                                                 me[i]->connectors.erase(j);
2420                                                 go_again = true;
2421                                                 break;
2422                                         }
2423                                 }
2424                         }
2425                 }
2426         }
2427         log(DEBUG,"Removed server. Will remove clients...");
2428         // iterate through the userlist and remove all users on this server.
2429         // because we're dealing with a mesh, we dont have to deal with anything
2430         // "down-route" from this server (nice huh)
2431         go_again = true;
2432         char reason[MAXBUF];
2433         while (go_again)
2434         {
2435                 go_again = false;
2436                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2437                 {
2438                         if (strcasecmp(u->second->server,ServerName))
2439                         {
2440                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2441                                 kill_link(u->second,reason);
2442                                 go_again = true;
2443                                 break;
2444                         }
2445                 }
2446         }
2447 }
2448
2449
2450
2451 char islast(const char* s)
2452 {
2453         char c = '`';
2454         for (int j = 0; j < 32; j++)
2455         {
2456                 if (me[j] != NULL)
2457                 {
2458                         for (int k = 0; k < me[j]->connectors.size(); k++)
2459                         {
2460                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2461                                 {
2462                                         c = '|';
2463                                 }
2464                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2465                                 {
2466                                         c = '`';
2467                                 }
2468                         }
2469                 }
2470         }
2471         return c;
2472 }
2473
2474 long map_count(const char* s)
2475 {
2476         int c = 0;
2477         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2478         {
2479                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2480         }
2481         return c;
2482 }
2483
2484
2485 void force_nickchange(userrec* user,const char* newnick)
2486 {
2487         char nick[MAXBUF];
2488         int MOD_RESULT = 0;
2489
2490         strcpy(nick,"");
2491
2492         FOREACH_RESULT(OnUserPreNick(user,newnick));
2493         if (MOD_RESULT) {
2494                 kill_link(user,"Nickname collision");
2495                 return;
2496         }
2497         if (matches_qline(newnick))
2498         {
2499                 kill_link(user,"Nickname collision");
2500                 return;
2501         }
2502
2503         if (user)
2504         {
2505                 if (newnick)
2506                 {
2507                         strncpy(nick,newnick,MAXBUF);
2508                 }
2509                 if (user->registered == 7)
2510                 {
2511                         char* pars[1];
2512                         pars[0] = nick;
2513                         handle_nick(pars,1,user);
2514                 }
2515         }
2516 }
2517
2518
2519 int process_parameters(char **command_p,char *parameters)
2520 {
2521         int i = 0;
2522         int j = 0;
2523         int q = 0;
2524         q = strlen(parameters);
2525         if (!q)
2526         {
2527                 /* no parameters, command_p invalid! */
2528                 return 0;
2529         }
2530         if (parameters[0] == ':')
2531         {
2532                 command_p[0] = parameters+1;
2533                 return 1;
2534         }
2535         if (q)
2536         {
2537                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2538                 {
2539                         /* only one parameter */
2540                         command_p[0] = parameters;
2541                         if (parameters[0] == ':')
2542                         {
2543                                 if (strchr(parameters,' ') != NULL)
2544                                 {
2545                                         command_p[0]++;
2546                                 }
2547                         }
2548                         return 1;
2549                 }
2550         }
2551         command_p[j++] = parameters;
2552         for (int i = 0; i <= q; i++)
2553         {
2554                 if (parameters[i] == ' ')
2555                 {
2556                         command_p[j++] = parameters+i+1;
2557                         parameters[i] = '\0';
2558                         if (command_p[j-1][0] == ':')
2559                         {
2560                                 *command_p[j-1]++; /* remove dodgy ":" */
2561                                 break;
2562                                 /* parameter like this marks end of the sequence */
2563                         }
2564                 }
2565         }
2566         return j; /* returns total number of items in the list */
2567 }
2568
2569 void process_command(userrec *user, char* cmd)
2570 {
2571         char *parameters;
2572         char *command;
2573         char *command_p[127];
2574         char p[MAXBUF], temp[MAXBUF];
2575         int i, j, items, cmd_found;
2576
2577         for (int i = 0; i < 127; i++)
2578                 command_p[i] = NULL;
2579
2580         if (!user)
2581         {
2582                 return;
2583         }
2584         if (!cmd)
2585         {
2586                 return;
2587         }
2588         if (!strcmp(cmd,""))
2589         {
2590                 return;
2591         }
2592
2593         int total_params = 0;
2594         if (strlen(cmd)>2)
2595         {
2596                 for (int q = 0; q < strlen(cmd)-1; q++)
2597                 {
2598                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2599                         {
2600                                 total_params++;
2601                                 // found a 'trailing', we dont count them after this.
2602                                 break;
2603                         }
2604                         if (cmd[q] == ' ')
2605                                 total_params++;
2606                 }
2607         }
2608
2609         // another phidjit bug...
2610         if (total_params > 126)
2611         {
2612                 //kill_link(user,"Protocol violation (1)");
2613                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2614                 return;
2615         }
2616
2617         strcpy(temp,cmd);
2618
2619         std::string tmp = cmd;
2620         for (int i = 0; i <= MODCOUNT; i++)
2621         {
2622                 std::string oldtmp = tmp;
2623                 modules[i]->OnServerRaw(tmp,true,user);
2624                 if (oldtmp != tmp)
2625                 {
2626                         log(DEBUG,"A Module changed the input string!");
2627                         log(DEBUG,"New string: %s",tmp.c_str());
2628                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2629                         break;
2630                 }
2631         }
2632         strncpy(cmd,tmp.c_str(),MAXBUF);
2633         strcpy(temp,cmd);
2634
2635         if (!strchr(cmd,' '))
2636         {
2637                 /* no parameters, lets skip the formalities and not chop up
2638                  * the string */
2639                 log(DEBUG,"About to preprocess command with no params");
2640                 items = 0;
2641                 command_p[0] = NULL;
2642                 parameters = NULL;
2643                 for (int i = 0; i <= strlen(cmd); i++)
2644                 {
2645                         cmd[i] = toupper(cmd[i]);
2646                 }
2647                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2648                 command = cmd;
2649         }
2650         else
2651         {
2652                 strcpy(cmd,"");
2653                 j = 0;
2654                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2655                 for (int i = 0; i < strlen(temp); i++)
2656                 {
2657                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2658                         {
2659                                 cmd[j++] = temp[i];
2660                                 cmd[j] = 0;
2661                         }
2662                 }
2663                 /* split the full string into a command plus parameters */
2664                 parameters = p;
2665                 strcpy(p," ");
2666                 command = cmd;
2667                 if (strchr(cmd,' '))
2668                 {
2669                         for (int i = 0; i <= strlen(cmd); i++)
2670                         {
2671                                 /* capitalise the command ONLY, leave params intact */
2672                                 cmd[i] = toupper(cmd[i]);
2673                                 /* are we nearly there yet?! :P */
2674                                 if (cmd[i] == ' ')
2675                                 {
2676                                         command = cmd;
2677                                         parameters = cmd+i+1;
2678                                         cmd[i] = '\0';
2679                                         break;
2680                                 }
2681                         }
2682                 }
2683                 else
2684                 {
2685                         for (int i = 0; i <= strlen(cmd); i++)
2686                         {
2687                                 cmd[i] = toupper(cmd[i]);
2688                         }
2689                 }
2690
2691         }
2692         cmd_found = 0;
2693
2694         if (strlen(command)>MAXCOMMAND)
2695         {
2696                 //kill_link(user,"Protocol violation (2)");
2697                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2698                 return;
2699         }
2700
2701         for (int x = 0; x < strlen(command); x++)
2702         {
2703                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2704                 {
2705                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2706                         {
2707                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2708                                 {
2709                                         //kill_link(user,"Protocol violation (3)");
2710                                         WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2711                                         return;
2712                                 }
2713                         }
2714                 }
2715         }
2716
2717         for (int i = 0; i != cmdlist.size(); i++)
2718         {
2719                 if (strcmp(cmdlist[i].command,""))
2720                 {
2721                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2722                         {
2723                                 log(DEBUG,"Found matching command");
2724
2725                                 if (parameters)
2726                                 {
2727                                         if (strcmp(parameters,""))
2728                                         {
2729                                                 items = process_parameters(command_p,parameters);
2730                                         }
2731                                         else
2732                                         {
2733                                                 items = 0;
2734                                                 command_p[0] = NULL;
2735                                         }
2736                                 }
2737                                 else
2738                                 {
2739                                         items = 0;
2740                                         command_p[0] = NULL;
2741                                 }
2742
2743                                 if (user)
2744                                 {
2745                                         log(DEBUG,"Processing command");
2746
2747                                         /* activity resets the ping pending timer */
2748                                         user->nping = time(NULL) + 120;
2749                                         if ((items) < cmdlist[i].min_params)
2750                                         {
2751                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2752                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2753                                                 return;
2754                                         }
2755                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2756                                         {
2757                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2758                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2759                                                 cmd_found = 1;
2760                                                 return;
2761                                         }
2762                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
2763                                         {
2764                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2765                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
2766                                                 cmd_found = 1;
2767                                                 return;
2768                                         }
2769                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2770                                          * deny command! */
2771                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2772                                         {
2773                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2774                                                 {
2775                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2776                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2777                                                         return;
2778                                                 }
2779                                         }
2780                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
2781                                         {
2782                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
2783                                                 if (cmdlist[i].handler_function)
2784                                                 {
2785                                                         /* ikky /stats counters */
2786                                                         if (temp)
2787                                                         {
2788                                                                 if (user)
2789                                                                 {
2790                                                                         user->bytes_in += strlen(temp);
2791                                                                         user->cmds_in++;
2792                                                                 }
2793                                                                 cmdlist[i].use_count++;
2794                                                                 cmdlist[i].total_bytes+=strlen(temp);
2795                                                         }
2796
2797                                                         /* WARNING: nothing may come after the
2798                                                          * command handler call, as the handler
2799                                                          * may free the user structure! */
2800
2801                                                         cmdlist[i].handler_function(command_p,items,user);
2802                                                 }
2803                                                 return;
2804                                         }
2805                                         else
2806                                         {
2807                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2808                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
2809                                                 return;
2810                                         }
2811                                 }
2812                                 cmd_found = 1;
2813                         }
2814                 }
2815         }
2816         if ((!cmd_found) && (user))
2817         {
2818                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
2819                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2820         }
2821 }
2822
2823
2824 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
2825 {
2826         command_t comm;
2827         /* create the command and push it onto the table */
2828         strcpy(comm.command,cmd);
2829         comm.handler_function = f;
2830         comm.flags_needed = flags;
2831         comm.min_params = minparams;
2832         comm.use_count = 0;
2833         comm.total_bytes = 0;
2834         cmdlist.push_back(comm);
2835         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
2836 }
2837
2838 void SetupCommandTable(void)
2839 {
2840         createcommand("USER",handle_user,0,4);
2841         createcommand("NICK",handle_nick,0,1);
2842         createcommand("QUIT",handle_quit,0,0);
2843         createcommand("VERSION",handle_version,0,0);
2844         createcommand("PING",handle_ping,0,1);
2845         createcommand("PONG",handle_pong,0,1);
2846         createcommand("ADMIN",handle_admin,0,0);
2847         createcommand("PRIVMSG",handle_privmsg,0,2);
2848         createcommand("INFO",handle_info,0,0);
2849         createcommand("TIME",handle_time,0,0);
2850         createcommand("WHOIS",handle_whois,0,1);
2851         createcommand("WALLOPS",handle_wallops,'o',1);
2852         createcommand("NOTICE",handle_notice,0,2);
2853         createcommand("JOIN",handle_join,0,1);
2854         createcommand("NAMES",handle_names,0,1);
2855         createcommand("PART",handle_part,0,1);
2856         createcommand("KICK",handle_kick,0,2);
2857         createcommand("MODE",handle_mode,0,1);
2858         createcommand("TOPIC",handle_topic,0,1);
2859         createcommand("WHO",handle_who,0,1);
2860         createcommand("MOTD",handle_motd,0,0);
2861         createcommand("RULES",handle_rules,0,0);
2862         createcommand("OPER",handle_oper,0,2);
2863         createcommand("LIST",handle_list,0,0);
2864         createcommand("DIE",handle_die,'o',1);
2865         createcommand("RESTART",handle_restart,'o',1);
2866         createcommand("KILL",handle_kill,'o',2);
2867         createcommand("REHASH",handle_rehash,'o',0);
2868         createcommand("LUSERS",handle_lusers,0,0);
2869         createcommand("STATS",handle_stats,0,1);
2870         createcommand("USERHOST",handle_userhost,0,1);
2871         createcommand("AWAY",handle_away,0,0);
2872         createcommand("ISON",handle_ison,0,0);
2873         createcommand("SUMMON",handle_summon,0,0);
2874         createcommand("USERS",handle_users,0,0);
2875         createcommand("INVITE",handle_invite,0,2);
2876         createcommand("PASS",handle_pass,0,1);
2877         createcommand("TRACE",handle_trace,'o',0);
2878         createcommand("WHOWAS",handle_whowas,0,1);
2879         createcommand("CONNECT",handle_connect,'o',1);
2880         createcommand("SQUIT",handle_squit,'o',0);
2881         createcommand("MODULES",handle_modules,'o',0);
2882         createcommand("LINKS",handle_links,0,0);
2883         createcommand("MAP",handle_map,0,0);
2884         createcommand("KLINE",handle_kline,'o',1);
2885         createcommand("GLINE",handle_gline,'o',1);
2886         createcommand("ZLINE",handle_zline,'o',1);
2887         createcommand("QLINE",handle_qline,'o',1);
2888         createcommand("SERVER",handle_server,0,0);
2889 }
2890
2891 void process_buffer(const char* cmdbuf,userrec *user)
2892 {
2893         if (!user)
2894         {
2895                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2896                 return;
2897         }
2898         char cmd[MAXBUF];
2899         int i;
2900         if (!cmdbuf)
2901         {
2902                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2903                 return;
2904         }
2905         if (!strcmp(cmdbuf,""))
2906         {
2907                 return;
2908         }
2909         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
2910
2911         strncpy(cmd,cmdbuf,MAXBUF);
2912         if (!strcmp(cmd,""))
2913         {
2914                 return;
2915         }
2916         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
2917         {
2918                 cmd[strlen(cmd)-1] = '\0';
2919         }
2920         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
2921         {
2922                 cmd[strlen(cmd)-1] = '\0';
2923         }
2924
2925         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
2926         {
2927                 cmd[strlen(cmd)-1] = '\0';
2928         }
2929
2930         if (!strcmp(cmd,""))
2931         {
2932                 return;
2933         }
2934         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
2935         tidystring(cmd);
2936         if ((user) && (cmd))
2937         {
2938                 process_command(user,cmd);
2939         }
2940 }
2941
2942 void DoSync(serverrec* serv, char* tcp_host)
2943 {
2944         char data[MAXBUF];
2945         log(DEBUG,"Sending sync");
2946         // send start of sync marker: Y <timestamp>
2947         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
2948         // except the ones its receiving it from.
2949         snprintf(data,MAXBUF,"Y %d",time(NULL));
2950         serv->SendPacket(data,tcp_host);
2951         // send users and channels
2952         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
2953         {
2954                 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);
2955                 serv->SendPacket(data,tcp_host);
2956                 if (strchr(u->second->modes,'o'))
2957                 {
2958                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
2959                         serv->SendPacket(data,tcp_host);
2960                 }
2961                 for (int i = 0; i <= MODCOUNT; i++)
2962                 {
2963                         string_list l = modules[i]->OnUserSync(u->second);
2964                         for (int j = 0; j < l.size(); j++)
2965                         {
2966                                 strncpy(data,l[j].c_str(),MAXBUF);
2967                                 serv->SendPacket(data,tcp_host);
2968                         }
2969                 }
2970                 if (strcmp(chlist(u->second),""))
2971                 {
2972                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
2973                         serv->SendPacket(data,tcp_host);
2974                 }
2975         }
2976         // send channel modes, topics etc...
2977         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
2978         {
2979                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
2980                 serv->SendPacket(data,tcp_host);
2981                 for (int i = 0; i <= MODCOUNT; i++)
2982                 {
2983                         string_list l = modules[i]->OnChannelSync(c->second);
2984                         for (int j = 0; j < l.size(); j++)
2985                         {
2986                                 strncpy(data,l[j].c_str(),MAXBUF);
2987                                 serv->SendPacket(data,tcp_host);
2988                         }
2989                 }
2990                 if (strcmp(c->second->topic,""))
2991                 {
2992                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
2993                         serv->SendPacket(data,tcp_host);
2994                 }
2995                 // send current banlist
2996
2997                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
2998                 {
2999                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
3000                         serv->SendPacket(data,tcp_host);
3001                 }
3002         }
3003         // sync global zlines, glines, etc
3004         sync_xlines(serv,tcp_host);
3005         snprintf(data,MAXBUF,"F %d",time(NULL));
3006         serv->SendPacket(data,tcp_host);
3007         log(DEBUG,"Sent sync");
3008         // ircd sends its serverlist after the end of sync here
3009 }
3010
3011
3012 void NetSendMyRoutingTable()
3013 {
3014         // send out a line saying what is reachable to us.
3015         // E.g. if A is linked to B C and D, send out:
3016         // $ A B C D
3017         // if its only linked to B and D send out:
3018         // $ A B D
3019         // if it has no links, dont even send out the line at all.
3020         char buffer[MAXBUF];
3021         sprintf(buffer,"$ %s",ServerName);
3022         bool sendit = false;
3023         for (int i = 0; i < 32; i++)
3024         {
3025                 if (me[i] != NULL)
3026                 {
3027                         for (int j = 0; j < me[i]->connectors.size(); j++)
3028                         {
3029                                 if (me[i]->connectors[j].GetState() != STATE_DISCONNECTED)
3030                                 {
3031                                         strncat(buffer," ",MAXBUF);
3032                                         strncat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3033                                         sendit = true;
3034                                 }
3035                         }
3036                 }
3037         }
3038         if (sendit)
3039                 NetSendToAll(buffer);
3040 }
3041
3042
3043 void DoSplit(const char* params)
3044 {
3045         bool go_again = true;
3046         while (go_again)
3047         {
3048                 go_again = false;
3049                 for (int i = 0; i < 32; i++)
3050                 {
3051                         if (me[i] != NULL)
3052                         {
3053                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3054                                 {
3055                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3056                                         {
3057                                                 j->routes.clear();
3058                                                 j->CloseConnection();
3059                                                 me[i]->connectors.erase(j);
3060                                                 go_again = true;
3061                                                 break;
3062                                         }
3063                                 }
3064                         }
3065                 }
3066         }
3067         log(DEBUG,"Removed server. Will remove clients...");
3068         // iterate through the userlist and remove all users on this server.
3069         // because we're dealing with a mesh, we dont have to deal with anything
3070         // "down-route" from this server (nice huh)
3071         go_again = true;
3072         char reason[MAXBUF];
3073         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3074         while (go_again)
3075         {
3076                 go_again = false;
3077                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3078                 {
3079                         if (!strcasecmp(u->second->server,params))
3080                         {
3081                                 kill_link(u->second,reason);
3082                                 go_again = true;
3083                                 break;
3084                         }
3085                 }
3086         }
3087 }
3088
3089 // removes a server. Will NOT remove its users!
3090
3091 void RemoveServer(const char* name)
3092 {
3093         bool go_again = true;
3094         while (go_again)
3095         {
3096                 go_again = false;
3097                 for (int i = 0; i < 32; i++)
3098                 {
3099                         if (me[i] != NULL)
3100                         {
3101                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3102                                 {
3103                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3104                                         {
3105                                                 j->routes.clear();
3106                                                 j->CloseConnection();
3107                                                 me[i]->connectors.erase(j);
3108                                                 go_again = true;
3109                                                 break;
3110                                         }
3111                                 }
3112                         }
3113                 }
3114         }
3115 }
3116
3117
3118 int reap_counter = 0;
3119
3120 int InspIRCd(void)
3121 {
3122         struct sockaddr_in client, server;
3123         char addrs[MAXBUF][255];
3124         int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
3125         socklen_t length;
3126         int count = 0, scanDetectTrigger = TRUE, showBanner = FALSE;
3127         int selectResult = 0, selectResult2 = 0;
3128         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3129         char resolvedHost[MAXBUF];
3130         fd_set selectFds;
3131         struct timeval tv;
3132
3133         log_file = fopen("ircd.log","a+");
3134         if (!log_file)
3135         {
3136                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3137                 Exit(ERROR);
3138         }
3139
3140         log(DEBUG,"InspIRCd: startup: begin");
3141         log(DEBUG,"$Id$");
3142         if (geteuid() == 0)
3143         {
3144                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3145                 Exit(ERROR);
3146                 log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
3147         }
3148         SetupCommandTable();
3149         log(DEBUG,"InspIRCd: startup: default command table set up");
3150
3151         ReadConfig();
3152         if (strcmp(DieValue,""))
3153         {
3154                 printf("WARNING: %s\n\n",DieValue);
3155                 exit(0);
3156         }
3157         log(DEBUG,"InspIRCd: startup: read config");
3158
3159         int count2 = 0, count3 = 0;
3160
3161         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3162         {
3163                 ConfValue("bind","port",count,configToken,&config_f);
3164                 ConfValue("bind","address",count,Addr,&config_f);
3165                 ConfValue("bind","type",count,Type,&config_f);
3166                 if (!strcmp(Type,"servers"))
3167                 {
3168                         char Default[MAXBUF];
3169                         strcpy(Default,"no");
3170                         ConfValue("bind","default",count,Default,&config_f);
3171                         if (strchr(Default,'y'))
3172                         {
3173                                 defaultRoute = count3;
3174                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3175                         }
3176                         me[count3] = new serverrec(ServerName,100L,false);
3177                         me[count3]->CreateListener(Addr,atoi(configToken));
3178                         count3++;
3179                 }
3180                 else
3181                 {
3182                         ports[count2] = atoi(configToken);
3183                         strcpy(addrs[count2],Addr);
3184                         count2++;
3185                 }
3186                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3187         }
3188         portCount = count2;
3189         UDPportCount = count3;
3190
3191         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3192
3193         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3194
3195         printf("\n");
3196
3197         /* BugFix By Craig! :p */
3198         count = 0;
3199         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3200         {
3201                 char modfile[MAXBUF];
3202                 ConfValue("module","name",count2,configToken,&config_f);
3203                 sprintf(modfile,"%s/%s",MOD_PATH,configToken,&config_f);
3204                 printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
3205                 log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
3206                 /* If The File Doesnt exist, Trying to load it
3207                  * Will Segfault the IRCd.. So, check to see if
3208                  * it Exists, Before Proceeding. */
3209                 if (FileExists(modfile))
3210                 {
3211                         factory[count] = new ircd_module(modfile);
3212                         if (factory[count]->LastError())
3213                         {
3214                                 log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
3215                                 sprintf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
3216                                 Exit(ERROR);
3217                         }
3218                         if (factory[count]->factory)
3219                         {
3220                                 modules[count] = factory[count]->factory->CreateModule();
3221                                 /* save the module and the module's classfactory, if
3222                                  * this isnt done, random crashes can occur :/ */
3223                                 module_names.push_back(modfile);
3224                         }
3225                         else
3226                         {
3227                                 log(DEBUG,"Unable to load %s",modfile);
3228                                 sprintf("Unable to load %s\nExiting...\n",modfile);
3229                                 Exit(ERROR);
3230                         }
3231                         /* Increase the Count */
3232                         count++;
3233                 }
3234                 else
3235                 {
3236                         log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
3237                         printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
3238                 }
3239         }
3240         MODCOUNT = count - 1;
3241         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3242
3243         printf("\nInspIRCd is now running!\n");
3244
3245         startup_time = time(NULL);
3246
3247         if (nofork)
3248         {
3249                 log(VERBOSE,"Not forking as -nofork was specified");
3250         }
3251         else
3252         {
3253                 if (DaemonSeed() == ERROR)
3254                 {
3255                         log(DEBUG,"InspIRCd: startup: can't daemonise");
3256                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3257                         Exit(ERROR);
3258                 }
3259         }
3260
3261
3262         /* setup select call */
3263         FD_ZERO(&selectFds);
3264         log(DEBUG,"InspIRCd: startup: zero selects");
3265         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3266
3267         for (count = 0; count < portCount; count++)
3268         {
3269                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3270                 {
3271                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3272                         return(ERROR);
3273                 }
3274                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3275                 {
3276                         log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
3277                 }
3278                 else    /* well we at least bound to one socket so we'll continue */
3279                 {
3280                         boundPortCount++;
3281                 }
3282         }
3283
3284         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3285
3286         /* if we didn't bind to anything then abort */
3287         if (boundPortCount == 0)
3288         {
3289                 log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
3290                 return (ERROR);
3291         }
3292
3293
3294         length = sizeof (client);
3295         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3296
3297         /* main loop, this never returns */
3298         for (;;)
3299         {
3300 #ifdef _POSIX_PRIORITY_SCHEDULING
3301                 sched_yield();
3302 #endif
3303                 // update the status of klines, etc
3304                 expire_lines();
3305
3306                 fd_set sfd;
3307                 timeval tval;
3308                 FD_ZERO(&sfd);
3309
3310                 user_hash::iterator count2 = clientlist.begin();
3311
3312                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3313                 // them in a list, then reap the list every second or so.
3314                 if (reap_counter>300)
3315                 {
3316                         if (fd_reap.size() > 0)
3317                         {
3318                                 for( int n = 0; n < fd_reap.size(); n++)
3319                                 {
3320                                         Blocking(fd_reap[n]);
3321                                         close(fd_reap[n]);
3322                                         NonBlocking(fd_reap[n]);
3323                                 }
3324                         }
3325                         fd_reap.clear();
3326                         reap_counter=0;
3327                 }
3328                 reap_counter++;
3329
3330                 fd_set serverfds;
3331                 FD_ZERO(&serverfds);
3332                 timeval tvs;
3333
3334                 for (int x = 0; x != UDPportCount; x++)
3335                 {
3336                         if (me[x])
3337                                 FD_SET(me[x]->fd, &serverfds);
3338                 }
3339
3340                 tvs.tv_usec = 0;
3341                 tvs.tv_sec = 0;
3342
3343                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3344                 if (servresult > 0)
3345                 {
3346                         for (int x = 0; x != UDPportCount; x++)
3347                         {
3348                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3349                                 {
3350                                         char remotehost[MAXBUF],resolved[MAXBUF];
3351                                         length = sizeof (client);
3352                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3353                                         strncpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3354                                         if(CleanAndResolve(resolved, remotehost) != TRUE)
3355                                         {
3356                                                 strncpy(resolved,remotehost,MAXBUF);
3357                                         }
3358                                         // add to this connections ircd_connector vector
3359                                         // *FIX* - we need the LOCAL port not the remote port in &client!
3360                                         me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3361                                 }
3362                         }
3363                 }
3364
3365                 for (int x = 0; x < UDPportCount; x++)
3366                 {
3367                         std::deque<std::string> msgs;
3368                         msgs.clear();
3369                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3370                         {
3371                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3372                                 {
3373                                         char udp_msg[MAXBUF];
3374                                         strncpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3375                                         if (strlen(udp_msg)<1)
3376                                         {
3377                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3378                                                 break;
3379                                         }
3380                                         // during a netburst, send all data to all other linked servers
3381                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3382                                         {
3383                                                 if (is_uline(tcp_host))
3384                                                 {
3385                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3386                                                         {
3387                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3388                                                         }
3389                                                 }
3390                                                 else
3391                                                         NetSendToAllExcept(tcp_host,udp_msg);
3392                                         }
3393                                         FOREACH_MOD OnPacketReceive(udp_msg);
3394                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3395                                 }
3396                                 goto label;
3397                         }
3398                 }
3399
3400
3401         while (count2 != clientlist.end())
3402         {
3403                 char data[10240];
3404                 tval.tv_usec = tval.tv_sec = 0;
3405                 FD_ZERO(&sfd);
3406                 int total_in_this_set = 0;
3407
3408                 user_hash::iterator xcount = count2;
3409                 user_hash::iterator endingiter = count2;
3410
3411                 if (!count2->second) break;
3412
3413                 if (count2->second)
3414                 if (count2->second->fd != 0)
3415                 {
3416                         // assemble up to 64 sockets into an fd_set
3417                         // to implement a pooling mechanism.
3418                         //
3419                         // This should be up to 64x faster than the
3420                         // old implementation.
3421                         while (total_in_this_set < 64)
3422                         {
3423                                 if (count2 != clientlist.end())
3424                                 {
3425                                         // we don't check the state of remote users.
3426                                         if (count2->second->fd > 0)
3427                                         {
3428                                                 FD_SET (count2->second->fd, &sfd);
3429
3430                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3431                                                 // their connection class.
3432                                                 if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
3433                                                 {
3434                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3435                                                         kill_link(count2->second,"Registration timeout");
3436                                                         goto label;
3437                                                 }
3438                                                 if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3439                                                 {
3440                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3441                                                         {
3442                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3443                                                                 kill_link(count2->second,"Ping timeout");
3444                                                                 goto label;
3445                                                         }
3446                                                         Write(count2->second->fd,"PING :%s",ServerName);
3447                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3448                                                         count2->second->lastping = 0;
3449                                                         count2->second->nping = time(NULL)+120;
3450                                                 }
3451                                         }
3452                                         count2++;
3453                                         total_in_this_set++;
3454                                 }
3455                                 else break;
3456                         }
3457
3458                         endingiter = count2;
3459                         count2 = xcount; // roll back to where we were
3460
3461                         int v = 0;
3462
3463                         tval.tv_usec = 0;
3464                         tval.tv_sec = 0;
3465                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3466
3467                         // now loop through all of the items in this pool if any are waiting
3468                         //if (selectResult2 > 0)
3469                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3470                         {
3471
3472 #ifdef _POSIX_PRIORITY_SCHEDULING
3473                                 sched_yield();
3474 #endif
3475
3476                                 result = EAGAIN;
3477                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3478                                 {
3479                                         log(DEBUG,"Reading fd %d",count2a->second->fd);
3480                                         memset(data, 0, 10240);
3481                                         result = read(count2a->second->fd, data, 10240);
3482
3483                                         if (result)
3484                                         {
3485                                                 if (result > 0)
3486                                                         log(DEBUG,"Read %d characters from socket",result);
3487                                                 userrec* current = count2a->second;
3488                                                 int currfd = current->fd;
3489                                                 char* l = strtok(data,"\n");
3490                                                 int floodlines = 0;
3491                                                 while (l)
3492                                                 {
3493                                                         floodlines++;
3494                                                         if ((floodlines > current->flood) && (current->flood != 0))
3495                                                         {
3496                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3497                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3498                                                                 kill_link(current,"Excess flood");
3499                                                                 goto label;
3500                                                         }
3501                                                         char sanitized[NetBufferSize];
3502                                                         memset(sanitized, 0, NetBufferSize);
3503                                                         int ptt = 0;
3504                                                         for (int pt = 0; pt < strlen(l); pt++)
3505                                                         {
3506                                                                 if (l[pt] != '\r')
3507                                                                 {
3508                                                                         sanitized[ptt++] = l[pt];
3509                                                                 }
3510                                                         }
3511                                                         sanitized[ptt] = '\0';
3512                                                         if (strlen(sanitized))
3513                                                         {
3514
3515
3516                                                                 // we're gonna re-scan to check if the nick is gone, after every
3517                                                                 // command - if it has, we're gonna bail
3518                                                                 bool find_again = false;
3519                                                                 process_buffer(sanitized,current);
3520
3521                                                                 // look for the user's record in case it's changed
3522                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3523                                                                 {
3524                                                                         if (c2->second->fd == currfd)
3525                                                                         {
3526                                                                                 // found again, update pointer
3527                                                                                 current == c2->second;
3528                                                                                 find_again = true;
3529                                                                                 break;
3530                                                                         }
3531                                                                 }
3532                                                                 if (!find_again)
3533                                                                         goto label;
3534
3535                                                         }
3536                                                         l = strtok(NULL,"\n");
3537                                                 }
3538                                                 goto label;
3539                                         }
3540
3541                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
3542                                         {
3543                                                 log(DEBUG,"killing: %s",count2a->second->nick);
3544                                                 kill_link(count2a->second,strerror(errno));
3545                                                 goto label;
3546                                         }
3547                                 }
3548                                 // result EAGAIN means nothing read
3549                                 if (result == EAGAIN)
3550                                 {
3551                                 }
3552                                 else
3553                                 if (result == 0)
3554                                 {
3555                                         if (count2->second)
3556                                         {
3557                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
3558                                                 kill_link(count2a->second,"Client exited");
3559                                                 // must bail here? kill_link removes the hash, corrupting the iterator
3560                                                 log(DEBUG,"Bailing from client exit");
3561                                                 goto label;
3562                                         }
3563                                 }
3564                                 else if (result > 0)
3565                                 {
3566                                 }
3567                         }
3568                 }
3569                 for (int q = 0; q < total_in_this_set; q++)
3570                 {
3571                         // there is no iterator += operator :(
3572                         //if (count2 != clientlist.end())
3573                         //{
3574                                 count2++;
3575                         //}
3576                 }
3577         }
3578
3579         // set up select call
3580         for (count = 0; count < boundPortCount; count++)
3581         {
3582                 FD_SET (openSockfd[count], &selectFds);
3583         }
3584
3585         tv.tv_usec = 1;
3586         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
3587
3588         /* select is reporting a waiting socket. Poll them all to find out which */
3589         if (selectResult > 0)
3590         {
3591                 char target[MAXBUF], resolved[MAXBUF];
3592                 for (count = 0; count < boundPortCount; count++)
3593                 {
3594                         if (FD_ISSET (openSockfd[count], &selectFds))
3595                         {
3596                                 length = sizeof (client);
3597                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
3598
3599                                 address_cache::iterator iter = IP.find(client.sin_addr);
3600                                 bool iscached = false;
3601                                 if (iter == IP.end())
3602                                 {
3603                                         /* ip isn't in cache, add it */
3604                                         strncpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
3605                                         if(CleanAndResolve(resolved, target) != TRUE)
3606                                         {
3607                                                 strncpy(resolved,target,MAXBUF);
3608                                         }
3609                                         /* hostname now in 'target' */
3610                                         IP[client.sin_addr] = new string(resolved);
3611                                         /* hostname in cache */
3612                                 }
3613                                 else
3614                                 {
3615                                         /* found ip (cached) */
3616                                         strncpy(resolved, iter->second->c_str(), MAXBUF);
3617                                         iscached = true;
3618                                 }
3619
3620                                 if (incomingSockfd < 0)
3621                                 {
3622                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
3623                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
3624                                 }
3625                                 else
3626                                 {
3627                                         AddClient(incomingSockfd, resolved, ports[count], iscached, inet_ntoa (client.sin_addr));
3628                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
3629                                 }
3630                                 goto label;
3631                         }
3632                 }
3633         }
3634         label:
3635         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
3636 }
3637 /* not reached */
3638 close (incomingSockfd);
3639 }
3640