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 #include "inspstring.h"
  59 #include "dnsqueue.h"
  60
  61 #ifdef GCC3
  62 #define nspace __gnu_cxx
  63 #else
  64 #define nspace std
  65 #endif
  66
  67 int LogLevel = DEFAULT;
  68 char ServerName[MAXBUF];
  69 char Network[MAXBUF];
  70 char ServerDesc[MAXBUF];
  71 char AdminName[MAXBUF];
  72 char AdminEmail[MAXBUF];
  73 char AdminNick[MAXBUF];
  74 char diepass[MAXBUF];
  75 char restartpass[MAXBUF];
  76 char motd[MAXBUF];
  77 char rules[MAXBUF];
  78 char list[MAXBUF];
  79 char PrefixQuit[MAXBUF];
  80 char DieValue[MAXBUF];
  81 char DNSServer[MAXBUF];
  82 int debugging =  0;
  83 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  84 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  85 int DieDelay  =  5;
  86 time_t startup_time = time(NULL);
  87 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  88 extern int MaxWhoResults;
  89 time_t nb_start = 0;
  90 int dns_timeout = 5;
  91
  92 char DisabledCommands[MAXBUF];
  93
  94 bool AllowHalfop = true;
  95 bool AllowProtect = true;
  96 bool AllowFounder = true;
  97
  98 extern std::vector<Module*> modules;
  99 std::vector<std::string> module_names;
 100 extern std::vector<ircd_module*> factory;
 101 std::vector<int> fd_reap;
 102
 103 extern int MODCOUNT;
 104 int openSockfd[MAXSOCKS];
 105 bool nofork = false;
 106
 107 time_t TIME = time(NULL);
 108
 109 namespace nspace
 110 {
 111 #ifdef GCC34
 112         template<> struct hash<in_addr>
 113 #else
 114         template<> struct nspace::hash<in_addr>
 115 #endif
 116         {
 117                 size_t operator()(const struct in_addr &a) const
 118                 {
 119                         size_t q;
 120                         memcpy(&q,&a,sizeof(size_t));
 121                         return q;
 122                 }
 123         };
 124 #ifdef GCC34
 125         template<> struct hash<string>
 126 #else
 127         template<> struct nspace::hash<string>
 128 #endif
 129         {
 130                 size_t operator()(const string &s) const
 131                 {
 132                         char a[MAXBUF];
 133                         static struct hash<const char *> strhash;
 134                         strlcpy(a,s.c_str(),MAXBUF);
 135                         strlower(a);
 136                         return strhash(a);
 137                 }
 138         };
 139 }
 140
 141
 142 struct StrHashComp
 143 {
 144
 145         bool operator()(const string& s1, const string& s2) const
 146         {
 147                 char a[MAXBUF],b[MAXBUF];
 148                 strlcpy(a,s1.c_str(),MAXBUF);
 149                 strlcpy(b,s2.c_str(),MAXBUF);
 150                 return (strcasecmp(a,b) == 0);
 151         }
 152
 153 };
 154
 155 struct InAddr_HashComp
 156 {
 157
 158         bool operator()(const in_addr &s1, const in_addr &s2) const
 159         {
 160                 size_t q;
 161                 size_t p;
 162
 163                 memcpy(&q,&s1,sizeof(size_t));
 164                 memcpy(&p,&s2,sizeof(size_t));
 165
 166                 return (q == p);
 167         }
 168
 169 };
 170
 171
 172 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 173 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 174 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 175 typedef std::deque<command_t> command_table;
 176
 177 serverrec* me[32];
 178
 179 FILE *log_file;
 180
 181 user_hash clientlist;
 182 chan_hash chanlist;
 183 user_hash whowas;
 184 command_table cmdlist;
 185 file_cache MOTD;
 186 file_cache RULES;
 187 address_cache IP;
 188
 189 ClassVector Classes;
 190
 191 struct linger linger = { 0 };
 192 char MyExecutable[1024];
 193 int boundPortCount = 0;
 194 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 195 int defaultRoute = 0;
 196 char ModPath[MAXBUF];
 197
 198 connection C;
 199
 200 long MyKey = C.GenKey();
 201
 202 /* prototypes */
 203
 204 int has_channel(userrec *u, chanrec *c);
 205 int usercount(chanrec *c);
 206 int usercount_i(chanrec *c);
 207 char* Passwd(userrec *user);
 208 bool IsDenied(userrec *user);
 209 void AddWhoWas(userrec* u);
 210
 211 std::vector<long> auth_cookies;
 212 std::stringstream config_f(stringstream::in | stringstream::out);
 213
 214
 215
 216 long GetRevision()
 217 {
 218         char Revision[] = "$Revision$";
 219         char *s1 = Revision;
 220         char *savept;
 221         char *v1 = strtok_r(s1," ",&savept);
 222         s1 = savept;
 223         char *v2 = strtok_r(s1," ",&savept);
 224         s1 = savept;
 225         return (long)(atof(v2)*10000);
 226 }
 227
 228
 229 std::string getservername()
 230 {
 231         return ServerName;
 232 }
 233
 234 std::string getserverdesc()
 235 {
 236         return ServerDesc;
 237 }
 238
 239 std::string getnetworkname()
 240 {
 241         return Network;
 242 }
 243
 244 std::string getadminname()
 245 {
 246         return AdminName;
 247 }
 248
 249 std::string getadminemail()
 250 {
 251         return AdminEmail;
 252 }
 253
 254 std::string getadminnick()
 255 {
 256         return AdminNick;
 257 }
 258
 259 void log(int level,char *text, ...)
 260 {
 261         char textbuffer[MAXBUF];
 262         va_list argsPtr;
 263         time_t rawtime;
 264         struct tm * timeinfo;
 265         if (level < LogLevel)
 266                 return;
 267
 268         time(&rawtime);
 269         timeinfo = localtime (&rawtime);
 270
 271         if (log_file)
 272         {
 273                 char b[MAXBUF];
 274                 va_start (argsPtr, text);
 275                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 276                 va_end(argsPtr);
 277                 strlcpy(b,asctime(timeinfo),MAXBUF);
 278                 b[strlen(b)-1] = ':';
 279                 fprintf(log_file,"%s %s\n",b,textbuffer);
 280                 if (nofork)
 281                 {
 282                         // nofork enabled? display it on terminal too
 283                         printf("%s %s\n",b,textbuffer);
 284                 }
 285         }
 286 }
 287
 288 void readfile(file_cache &F, const char* fname)
 289 {
 290         FILE* file;
 291         char linebuf[MAXBUF];
 292
 293         log(DEBUG,"readfile: loading %s",fname);
 294         F.clear();
 295         file =  fopen(fname,"r");
 296         if (file)
 297         {
 298                 while (!feof(file))
 299                 {
 300                         fgets(linebuf,sizeof(linebuf),file);
 301                         linebuf[strlen(linebuf)-1]='\0';
 302                         if (!strcmp(linebuf,""))
 303                         {
 304                                 strcpy(linebuf,"  ");
 305                         }
 306                         if (!feof(file))
 307                         {
 308                                 F.push_back(linebuf);
 309                         }
 310                 }
 311                 fclose(file);
 312         }
 313         else
 314         {
 315                 log(DEBUG,"readfile: failed to load file: %s",fname);
 316         }
 317         log(DEBUG,"readfile: loaded %s, %d lines",fname,F.size());
 318 }
 319
 320 void ReadConfig(bool bail, userrec* user)
 321 {
 322         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 323         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF];
 324         ConnectClass c;
 325         std::stringstream errstr;
 326
 327         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 328         {
 329                 errstr.seekg(0);
 330                 if (bail)
 331                 {
 332                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 333                         Exit(0);
 334                 }
 335                 else
 336                 {
 337                         char dataline[1024];
 338                         if (user)
 339                         {
 340                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 341                                 while (!errstr.eof())
 342                                 {
 343                                         errstr.getline(dataline,1024);
 344                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 345                                 }
 346                         }
 347                         else
 348                         {
 349                                 WriteOpers("There were errors in the configuration file:",user->nick);
 350                                 while (!errstr.eof())
 351                                 {
 352                                         errstr.getline(dataline,1024);
 353                                         WriteOpers(dataline);
 354                                 }
 355                         }
 356                         return;
 357                 }
 358         }
 359
 360         ConfValue("server","name",0,ServerName,&config_f);
 361         ConfValue("server","description",0,ServerDesc,&config_f);
 362         ConfValue("server","network",0,Network,&config_f);
 363         ConfValue("admin","name",0,AdminName,&config_f);
 364         ConfValue("admin","email",0,AdminEmail,&config_f);
 365         ConfValue("admin","nick",0,AdminNick,&config_f);
 366         ConfValue("files","motd",0,motd,&config_f);
 367         ConfValue("files","rules",0,rules,&config_f);
 368         ConfValue("power","diepass",0,diepass,&config_f);
 369         ConfValue("power","pause",0,pauseval,&config_f);
 370         ConfValue("power","restartpass",0,restartpass,&config_f);
 371         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 372         ConfValue("die","value",0,DieValue,&config_f);
 373         ConfValue("options","loglevel",0,dbg,&config_f);
 374         ConfValue("options","netbuffersize",0,NB,&config_f);
 375         ConfValue("options","maxwho",0,MW,&config_f);
 376         ConfValue("options","allowhalfop",0,AH,&config_f);
 377         ConfValue("options","allowprotect",0,AP,&config_f);
 378         ConfValue("options","allowfounder",0,AF,&config_f);
 379         ConfValue("dns","server",0,DNSServer,&config_f);
 380         ConfValue("dns","timeout",0,DNT,&config_f);
 381         ConfValue("options","moduledir",0,ModPath,&config_f);
 382         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 383
 384         NetBufferSize = atoi(NB);
 385         MaxWhoResults = atoi(MW);
 386         dns_timeout = atoi(DNT);
 387         if (!dns_timeout)
 388                 dns_timeout = 5;
 389         if (!strcmp(DNSServer,""))
 390                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 391         if (!strcmp(ModPath,""))
 392                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 393         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 394         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 395         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 396         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 397         {
 398                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 399                 NetBufferSize = 10240;
 400         }
 401         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 402         {
 403                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 404                 MaxWhoResults = 128;
 405         }
 406         if (!strcmp(dbg,"debug"))
 407                 LogLevel = DEBUG;
 408         if (!strcmp(dbg,"verbose"))
 409                 LogLevel = VERBOSE;
 410         if (!strcmp(dbg,"default"))
 411                 LogLevel = DEFAULT;
 412         if (!strcmp(dbg,"sparse"))
 413                 LogLevel = SPARSE;
 414         if (!strcmp(dbg,"none"))
 415                 LogLevel = NONE;
 416         readfile(MOTD,motd);
 417         log(DEFAULT,"Reading message of the day...");
 418         readfile(RULES,rules);
 419         log(DEFAULT,"Reading connect classes...");
 420         Classes.clear();
 421         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 422         {
 423                 strcpy(Value,"");
 424                 ConfValue("connect","allow",i,Value,&config_f);
 425                 ConfValue("connect","timeout",i,timeout,&config_f);
 426                 ConfValue("connect","flood",i,flood,&config_f);
 427                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 428                 if (strcmp(Value,""))
 429                 {
 430                         strlcpy(c.host,Value,MAXBUF);
 431                         c.type = CC_ALLOW;
 432                         strlcpy(Value,"",MAXBUF);
 433                         ConfValue("connect","password",i,Value,&config_f);
 434                         strlcpy(c.pass,Value,MAXBUF);
 435                         c.registration_timeout = 90; // default is 2 minutes
 436                         c.pingtime = 120;
 437                         c.flood = atoi(flood);
 438                         if (atoi(timeout)>0)
 439                         {
 440                                 c.registration_timeout = atoi(timeout);
 441                         }
 442                         if (atoi(pfreq)>0)
 443                         {
 444                                 c.pingtime = atoi(pfreq);
 445                         }
 446                         Classes.push_back(c);
 447                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood);
 448                 }
 449                 else
 450                 {
 451                         ConfValue("connect","deny",i,Value,&config_f);
 452                         strlcpy(c.host,Value,MAXBUF);
 453                         c.type = CC_DENY;
 454                         Classes.push_back(c);
 455                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 456                 }
 457
 458         }
 459         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 460         read_xline_defaults();
 461         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 462         apply_lines();
 463         log(DEFAULT,"Done reading configuration file, InspIRCd is now running.");
 464         if (!bail)
 465         {
 466                 log(DEFAULT,"Adding and removing modules due to rehash...");
 467
 468                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 469
 470                 // store the old module names
 471                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 472                 {
 473                         old_module_names.push_back(*t);
 474                 }
 475
 476                 // get the new module names
 477                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 478                 {
 479                         ConfValue("module","name",count2,Value,&config_f);
 480                         new_module_names.push_back(Value);
 481                 }
 482
 483                 // now create a list of new modules that are due to be loaded
 484                 // and a seperate list of modules which are due to be unloaded
 485                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 486                 {
 487                         bool added = true;
 488                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 489                         {
 490                                 if (*old == *_new)
 491                                         added = false;
 492                         }
 493                         if (added)
 494                                 added_modules.push_back(*_new);
 495                 }
 496                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 497                 {
 498                         bool removed = true;
 499                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 500                         {
 501                                 if (*newm == *oldm)
 502                                         removed = false;
 503                         }
 504                         if (removed)
 505                                 removed_modules.push_back(*oldm);
 506                 }
 507                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 508                 // to be removed.
 509                 int rem = 0, add = 0;
 510                 if (!removed_modules.empty())
 511                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 512                 {
 513                         if (UnloadModule(removing->c_str()))
 514                         {
 515                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 516                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 517                                 rem++;
 518                         }
 519                         else
 520                         {
 521                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 522                         }
 523                 }
 524                 if (!added_modules.empty())
 525                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 526                 {
 527                         if (LoadModule(adding->c_str()))
 528                         {
 529                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 530                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 531                                 add++;
 532                         }
 533                         else
 534                         {
 535                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 536                         }
 537                 }
 538                 log(DEFAULT,"Successfully unloaded %d of %d modules and loaded %d of %d modules.",rem,removed_modules.size(),add,added_modules.size());
 539         }
 540 }
 541
 542 /* write formatted text to a socket, in same format as printf */
 543
 544 void Write(int sock,char *text, ...)
 545 {
 546         if (!text)
 547         {
 548                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 549                 return;
 550         }
 551         char textbuffer[MAXBUF];
 552         va_list argsPtr;
 553         char tb[MAXBUF];
 554
 555         va_start (argsPtr, text);
 556         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 557         va_end(argsPtr);
 558         snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 559         chop(tb);
 560         if (sock != -1)
 561         {
 562                 write(sock,tb,strlen(tb));
 563         }
 564 }
 565
 566 /* write a server formatted numeric response to a single socket */
 567
 568 void WriteServ(int sock, char* text, ...)
 569 {
 570         if (!text)
 571         {
 572                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 573                 return;
 574         }
 575         char textbuffer[MAXBUF],tb[MAXBUF];
 576         va_list argsPtr;
 577         va_start (argsPtr, text);
 578
 579         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 580         va_end(argsPtr);
 581         snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 582         chop(tb);
 583         if (sock != -1)
 584         {
 585                 write(sock,tb,strlen(tb));
 586         }
 587 }
 588
 589 /* write text from an originating user to originating user */
 590
 591 void WriteFrom(int sock, userrec *user,char* text, ...)
 592 {
 593         if ((!text) || (!user))
 594         {
 595                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 596                 return;
 597         }
 598         char textbuffer[MAXBUF],tb[MAXBUF];
 599         va_list argsPtr;
 600         va_start (argsPtr, text);
 601
 602         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 603         va_end(argsPtr);
 604         snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 605         chop(tb);
 606         if (sock != -1)
 607         {
 608                 write(sock,tb,strlen(tb));
 609         }
 610 }
 611
 612 /* write text to an destination user from a source user (e.g. user privmsg) */
 613
 614 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 615 {
 616         if ((!dest) || (!data))
 617         {
 618                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 619                 return;
 620         }
 621         char textbuffer[MAXBUF],tb[MAXBUF];
 622         va_list argsPtr;
 623         va_start (argsPtr, data);
 624         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 625         va_end(argsPtr);
 626         chop(tb);
 627
 628         // if no source given send it from the server.
 629         if (!source)
 630         {
 631                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 632         }
 633         else
 634         {
 635                 WriteFrom(dest->fd,source,"%s",textbuffer);
 636         }
 637 }
 638
 639 /* write formatted text from a source user to all users on a channel
 640  * including the sender (NOT for privmsg, notice etc!) */
 641
 642 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 643 {
 644         if ((!Ptr) || (!user) || (!text))
 645         {
 646                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 647                 return;
 648         }
 649         char textbuffer[MAXBUF];
 650         va_list argsPtr;
 651         va_start (argsPtr, text);
 652         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 653         va_end(argsPtr);
 654         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 655         {
 656                 if (has_channel(i->second,Ptr))
 657                 {
 658                         WriteTo(user,i->second,"%s",textbuffer);
 659                 }
 660         }
 661 }
 662
 663 /* write formatted text from a source user to all users on a channel
 664  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 665  * users on remote servers */
 666
 667 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 668 {
 669         if ((!Ptr) || (!text))
 670         {
 671                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 672                 return;
 673         }
 674         char textbuffer[MAXBUF];
 675         va_list argsPtr;
 676         va_start (argsPtr, text);
 677         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 678         va_end(argsPtr);
 679         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 680         {
 681                 if (has_channel(i->second,Ptr))
 682                 {
 683                         if (i->second->fd != -1)
 684                         {
 685                                 if (!user)
 686                                 {
 687                                         WriteServ(i->second->fd,"%s",textbuffer);
 688                                 }
 689                                 else
 690                                 {
 691                                         WriteTo(user,i->second,"%s",textbuffer);
 692                                 }
 693                         }
 694                 }
 695         }
 696 }
 697
 698
 699 void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
 700 {
 701         if ((!Ptr) || (!user) || (!text))
 702         {
 703                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 704                 return;
 705         }
 706         char textbuffer[MAXBUF];
 707         va_list argsPtr;
 708         va_start (argsPtr, text);
 709         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 710         va_end(argsPtr);
 711         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 712         {
 713                 if (i->second)
 714                 {
 715                         if (has_channel(i->second,Ptr))
 716                         {
 717                                 WriteServ(i->second->fd,"%s",textbuffer);
 718                         }
 719                 }
 720         }
 721 }
 722
 723
 724 /* write formatted text from a source user to all users on a channel except
 725  * for the sender (for privmsg etc) */
 726
 727 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 728 {
 729         if ((!Ptr) || (!user) || (!text))
 730         {
 731                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 732                 return;
 733         }
 734         char textbuffer[MAXBUF];
 735         va_list argsPtr;
 736         va_start (argsPtr, text);
 737         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 738         va_end(argsPtr);
 739
 740         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 741         {
 742                 if (i->second)
 743                 {
 744                         if (has_channel(i->second,Ptr) && (user != i->second))
 745                         {
 746                                 WriteTo(user,i->second,"%s",textbuffer);
 747                         }
 748                 }
 749         }
 750 }
 751
 752
 753 std::string GetServerDescription(char* servername)
 754 {
 755         for (int j = 0; j < 32; j++)
 756         {
 757                 if (me[j] != NULL)
 758                 {
 759                         for (int k = 0; k < me[j]->connectors.size(); k++)
 760                         {
 761                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 762                                 {
 763                                         return me[j]->connectors[k].GetDescription();
 764                                 }
 765                         }
 766                 }
 767                 return ServerDesc; // not a remote server that can be found, it must be me.
 768         }
 769 }
 770
 771
 772 /* write a formatted string to all users who share at least one common
 773  * channel, including the source user e.g. for use in NICK */
 774
 775 void WriteCommon(userrec *u, char* text, ...)
 776 {
 777         if (!u)
 778         {
 779                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 780                 return;
 781         }
 782
 783         if (u->registered != 7) {
 784                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 785                 return;
 786         }
 787
 788         char textbuffer[MAXBUF];
 789         va_list argsPtr;
 790         va_start (argsPtr, text);
 791         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 792         va_end(argsPtr);
 793
 794         WriteFrom(u->fd,u,"%s",textbuffer);
 795
 796         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 797         {
 798                 if (i->second)
 799                 {
 800                         if (common_channels(u,i->second) && (i->second != u))
 801                         {
 802                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 803                         }
 804                 }
 805         }
 806 }
 807
 808 /* write a formatted string to all users who share at least one common
 809  * channel, NOT including the source user e.g. for use in QUIT */
 810
 811 void WriteCommonExcept(userrec *u, char* text, ...)
 812 {
 813         if (!u)
 814         {
 815                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 816                 return;
 817         }
 818
 819         if (u->registered != 7) {
 820                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 821                 return;
 822         }
 823
 824         char textbuffer[MAXBUF];
 825         va_list argsPtr;
 826         va_start (argsPtr, text);
 827         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 828         va_end(argsPtr);
 829
 830         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 831         {
 832                 if (i->second)
 833                 {
 834                         if ((common_channels(u,i->second)) && (u != i->second))
 835                         {
 836                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 837                         }
 838                 }
 839         }
 840 }
 841
 842 void WriteOpers(char* text, ...)
 843 {
 844         if (!text)
 845         {
 846                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 847                 return;
 848         }
 849
 850         char textbuffer[MAXBUF];
 851         va_list argsPtr;
 852         va_start (argsPtr, text);
 853         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 854         va_end(argsPtr);
 855
 856         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 857         {
 858                 if (i->second)
 859                 {
 860                         if (strchr(i->second->modes,'o'))
 861                         {
 862                                 if (strchr(i->second->modes,'s'))
 863                                 {
 864                                         // send server notices to all with +s
 865                                         // (TODO: needs SNOMASKs)
 866                                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 867                                 }
 868                         }
 869                 }
 870         }
 871 }
 872
 873 // returns TRUE of any users on channel C occupy server 'servername'.
 874
 875 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 876 {
 877         log(DEBUG,"ChanAnyOnThisServer");
 878         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 879         {
 880                 if (has_channel(i->second,c))
 881                 {
 882                         if (!strcasecmp(i->second->server,servername))
 883                         {
 884                                 return true;
 885                         }
 886                 }
 887         }
 888         return false;
 889 }
 890
 891 // returns true if user 'u' shares any common channels with any users on server 'servername'
 892
 893 bool CommonOnThisServer(userrec* u,const char* servername)
 894 {
 895         log(DEBUG,"ChanAnyOnThisServer");
 896         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 897         {
 898                 if ((common_channels(u,i->second)) && (u != i->second))
 899                 {
 900                         if (!strcasecmp(i->second->server,servername))
 901                         {
 902                                 log(DEBUG,"%s is common to %s sharing with %s",i->second->nick,servername,u->nick);
 903                                 return true;
 904                         }
 905                 }
 906         }
 907         return false;
 908 }
 909
 910
 911 void NetSendToCommon(userrec* u, char* s)
 912 {
 913         char buffer[MAXBUF];
 914         snprintf(buffer,MAXBUF,"%s",s);
 915
 916         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 917
 918         std::string msg = buffer;
 919         FOREACH_MOD OnPacketTransmit(msg,s);
 920         strlcpy(buffer,msg.c_str(),MAXBUF);
 921
 922         for (int j = 0; j < 32; j++)
 923         {
 924                 if (me[j] != NULL)
 925                 {
 926                         for (int k = 0; k < me[j]->connectors.size(); k++)
 927                         {
 928                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 929                                 {
 930                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 931                                 }
 932                         }
 933                 }
 934         }
 935 }
 936
 937
 938 void NetSendToAll(char* s)
 939 {
 940         char buffer[MAXBUF];
 941         snprintf(buffer,MAXBUF,"%s",s);
 942
 943         log(DEBUG,"NetSendToAll: '%s'",s);
 944
 945         std::string msg = buffer;
 946         FOREACH_MOD OnPacketTransmit(msg,s);
 947         strlcpy(buffer,msg.c_str(),MAXBUF);
 948
 949         for (int j = 0; j < 32; j++)
 950         {
 951                 if (me[j] != NULL)
 952                 {
 953                         for (int k = 0; k < me[j]->connectors.size(); k++)
 954                         {
 955                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 956                         }
 957                 }
 958         }
 959 }
 960
 961 void NetSendToAllAlive(char* s)
 962 {
 963         char buffer[MAXBUF];
 964         snprintf(buffer,MAXBUF,"%s",s);
 965
 966         log(DEBUG,"NetSendToAllAlive: '%s'",s);
 967
 968         std::string msg = buffer;
 969         FOREACH_MOD OnPacketTransmit(msg,s);
 970         strlcpy(buffer,msg.c_str(),MAXBUF);
 971
 972         for (int j = 0; j < 32; j++)
 973         {
 974                 if (me[j] != NULL)
 975                 {
 976                         for (int k = 0; k < me[j]->connectors.size(); k++)
 977                         {
 978                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
 979                                 {
 980                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 981                                 }
 982                                 else
 983                                 {
 984                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
 985                                 }
 986                         }
 987                 }
 988         }
 989 }
 990
 991
 992 void NetSendToOne(char* target,char* s)
 993 {
 994         char buffer[MAXBUF];
 995         snprintf(buffer,MAXBUF,"%s",s);
 996
 997         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
 998
 999         std::string msg = buffer;
1000         FOREACH_MOD OnPacketTransmit(msg,s);
1001         strlcpy(buffer,msg.c_str(),MAXBUF);
1002
1003         for (int j = 0; j < 32; j++)
1004         {
1005                 if (me[j] != NULL)
1006                 {
1007                         for (int k = 0; k < me[j]->connectors.size(); k++)
1008                         {
1009                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1010                                 {
1011                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1012                                 }
1013                         }
1014                 }
1015         }
1016 }
1017
1018 void NetSendToAllExcept(const char* target,char* s)
1019 {
1020         char buffer[MAXBUF];
1021         snprintf(buffer,MAXBUF,"%s",s);
1022
1023         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1024
1025         std::string msg = buffer;
1026         FOREACH_MOD OnPacketTransmit(msg,s);
1027         strlcpy(buffer,msg.c_str(),MAXBUF);
1028
1029         for (int j = 0; j < 32; j++)
1030         {
1031                 if (me[j] != NULL)
1032                 {
1033                         for (int k = 0; k < me[j]->connectors.size(); k++)
1034                         {
1035                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1036                                 {
1037                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1038                                 }
1039                         }
1040                 }
1041         }
1042 }
1043
1044
1045 void WriteMode(const char* modes, int flags, const char* text, ...)
1046 {
1047         if ((!text) || (!modes) || (!flags))
1048         {
1049                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1050                 return;
1051         }
1052
1053         char textbuffer[MAXBUF];
1054         va_list argsPtr;
1055         va_start (argsPtr, text);
1056         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1057         va_end(argsPtr);
1058
1059         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1060         {
1061                 if (i->second)
1062                 {
1063                         bool send_to_user = false;
1064
1065                         if (flags == WM_AND)
1066                         {
1067                                 send_to_user = true;
1068                                 for (int n = 0; n < strlen(modes); n++)
1069                                 {
1070                                         if (!hasumode(i->second,modes[n]))
1071                                         {
1072                                                 send_to_user = false;
1073                                                 break;
1074                                         }
1075                                 }
1076                         }
1077                         else if (flags == WM_OR)
1078                         {
1079                                 send_to_user = false;
1080                                 for (int n = 0; n < strlen(modes); n++)
1081                                 {
1082                                         if (hasumode(i->second,modes[n]))
1083                                         {
1084                                                 send_to_user = true;
1085                                                 break;
1086                                         }
1087                                 }
1088                         }
1089
1090                         if (send_to_user)
1091                         {
1092                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1093                         }
1094                 }
1095         }
1096 }
1097
1098
1099 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1100 {
1101         if ((!text) || (!source))
1102         {
1103                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1104                 return;
1105         }
1106
1107         int i = 0;
1108         char textbuffer[MAXBUF];
1109         va_list argsPtr;
1110         va_start (argsPtr, text);
1111         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1112         va_end(argsPtr);
1113
1114         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1115         {
1116                 if (i->second)
1117                 {
1118                         if (strchr(i->second->modes,'w'))
1119                         {
1120                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1121                         }
1122                 }
1123         }
1124
1125         if (!local_only)
1126         {
1127                 char buffer[MAXBUF];
1128                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1129                 NetSendToAll(buffer);
1130         }
1131 }
1132
1133 /* convert a string to lowercase. Note following special circumstances
1134  * taken from RFC 1459. Many "official" server branches still hold to this
1135  * rule so i will too;
1136  *
1137  *  Because of IRC's scandanavian origin, the characters {}| are
1138  *  considered to be the lower case equivalents of the characters []\,
1139  *  respectively. This is a critical issue when determining the
1140  *  equivalence of two nicknames.
1141  */
1142
1143 void strlower(char *n)
1144 {
1145         if (!n)
1146         {
1147                 return;
1148         }
1149         for (int i = 0; i != strlen(n); i++)
1150         {
1151                 n[i] = tolower(n[i]);
1152                 if (n[i] == '[')
1153                         n[i] = '{';
1154                 if (n[i] == ']')
1155                         n[i] = '}';
1156                 if (n[i] == '\\')
1157                         n[i] = '|';
1158         }
1159 }
1160
1161
1162
1163 /* Find a user record by nickname and return a pointer to it */
1164
1165 userrec* Find(std::string nick)
1166 {
1167         user_hash::iterator iter = clientlist.find(nick);
1168
1169         if (iter == clientlist.end())
1170                 /* Couldn't find it */
1171                 return NULL;
1172
1173         return iter->second;
1174 }
1175
1176 /* find a channel record by channel name and return a pointer to it */
1177
1178 chanrec* FindChan(const char* chan)
1179 {
1180         if (!chan)
1181         {
1182                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1183                 return NULL;
1184         }
1185
1186         chan_hash::iterator iter = chanlist.find(chan);
1187
1188         if (iter == chanlist.end())
1189                 /* Couldn't find it */
1190                 return NULL;
1191
1192         return iter->second;
1193 }
1194
1195
1196 long GetMaxBans(char* name)
1197 {
1198         char CM[MAXBUF];
1199         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1200         {
1201                 ConfValue("banlist","chan",count,CM,&config_f);
1202                 if (match(name,CM))
1203                 {
1204                         ConfValue("banlist","limit",count,CM,&config_f);
1205                         return atoi(CM);
1206                 }
1207         }
1208         return 64;
1209 }
1210
1211
1212 void purge_empty_chans(void)
1213 {
1214         int go_again = 1, purge = 0;
1215
1216         while (go_again)
1217         {
1218                 go_again = 0;
1219                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1220                 {
1221                         if (i->second) {
1222                                 if (!usercount(i->second))
1223                                 {
1224                                         /* kill the record */
1225                                         if (i != chanlist.end())
1226                                         {
1227                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1228                                                 if (i->second) delete i->second;
1229                                                 chanlist.erase(i);
1230                                                 go_again = 1;
1231                                                 purge++;
1232                                                 break;
1233                                         }
1234                                 }
1235                                 else
1236                                 {
1237                                         log(DEBUG,"skipped purge for %s",i->second->name);
1238                                 }
1239                         }
1240                 }
1241         }
1242         log(DEBUG,"completed channel purge, killed %d",purge);
1243 }
1244
1245
1246 char scratch[MAXBUF];
1247 char sparam[MAXBUF];
1248
1249 char* chanmodes(chanrec *chan)
1250 {
1251         if (!chan)
1252         {
1253                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1254                 strcpy(scratch,"");
1255                 return scratch;
1256         }
1257
1258         strcpy(scratch,"");
1259         strcpy(sparam,"");
1260         if (chan->noexternal)
1261         {
1262                 strlcat(scratch,"n",MAXMODES);
1263         }
1264         if (chan->topiclock)
1265         {
1266                 strlcat(scratch,"t",MAXMODES);
1267         }
1268         if (strcmp(chan->key,""))
1269         {
1270                 strlcat(scratch,"k",MAXMODES);
1271         }
1272         if (chan->limit)
1273         {
1274                 strlcat(scratch,"l",MAXMODES);
1275         }
1276         if (chan->inviteonly)
1277         {
1278                 strlcat(scratch,"i",MAXMODES);
1279         }
1280         if (chan->moderated)
1281         {
1282                 strlcat(scratch,"m",MAXMODES);
1283         }
1284         if (chan->secret)
1285         {
1286                 strlcat(scratch,"s",MAXMODES);
1287         }
1288         if (chan->c_private)
1289         {
1290                 strlcat(scratch,"p",MAXMODES);
1291         }
1292         if (strcmp(chan->key,""))
1293         {
1294                 strlcat(sparam," ",MAXBUF);
1295                 strlcat(sparam,chan->key,MAXBUF);
1296         }
1297         if (chan->limit)
1298         {
1299                 char foo[24];
1300                 sprintf(foo," %d",chan->limit);
1301                 strlcat(sparam,foo,MAXBUF);
1302         }
1303         if (strlen(chan->custom_modes))
1304         {
1305                 strlcat(scratch,chan->custom_modes,MAXMODES);
1306                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1307                 {
1308                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1309                         if (extparam != "")
1310                         {
1311                                 strlcat(sparam," ",MAXBUF);
1312                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1313                         }
1314                 }
1315         }
1316         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1317         strlcat(scratch,sparam,MAXMODES);
1318         return scratch;
1319 }
1320
1321
1322 /* compile a userlist of a channel into a string, each nick seperated by
1323  * spaces and op, voice etc status shown as @ and + */
1324
1325 void userlist(userrec *user,chanrec *c)
1326 {
1327         if ((!c) || (!user))
1328         {
1329                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1330                 return;
1331         }
1332
1333         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1334         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1335         {
1336                 if (has_channel(i->second,c))
1337                 {
1338                         if (isnick(i->second->nick))
1339                         {
1340                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1341                                 {
1342                                         /* user is +i, and source not on the channel, does not show
1343                                          * nick in NAMES list */
1344                                         continue;
1345                                 }
1346                                 strlcat(list,cmode(i->second,c),MAXBUF);
1347                                 strlcat(list,i->second->nick,MAXBUF);
1348                                 strlcat(list," ",MAXBUF);
1349                                 if (strlen(list)>(480-NICKMAX))
1350                                 {
1351                                         /* list overflowed into
1352                                          * multiple numerics */
1353                                         WriteServ(user->fd,"%s",list);
1354                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1355                                 }
1356                         }
1357                 }
1358         }
1359         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1360         {
1361                 WriteServ(user->fd,"%s",list);
1362         }
1363 }
1364
1365 /* return a count of the users on a specific channel accounting for
1366  * invisible users who won't increase the count. e.g. for /LIST */
1367
1368 int usercount_i(chanrec *c)
1369 {
1370         int i = 0;
1371         int count = 0;
1372
1373         if (!c)
1374         {
1375                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1376                 return 0;
1377         }
1378
1379         strcpy(list,"");
1380         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1381         {
1382                 if (i->second)
1383                 {
1384                         if (has_channel(i->second,c))
1385                         {
1386                                 if (isnick(i->second->nick))
1387                                 {
1388                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1389                                         {
1390                                                 /* user is +i, and source not on the channel, does not show
1391                                                  * nick in NAMES list */
1392                                                 continue;
1393                                         }
1394                                         count++;
1395                                 }
1396                         }
1397                 }
1398         }
1399         log(DEBUG,"usercount_i: %s %d",c->name,count);
1400         return count;
1401 }
1402
1403
1404 int usercount(chanrec *c)
1405 {
1406         int i = 0;
1407         int count = 0;
1408
1409         if (!c)
1410         {
1411                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1412                 return 0;
1413         }
1414
1415         strcpy(list,"");
1416         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1417         {
1418                 if (i->second)
1419                 {
1420                         if (has_channel(i->second,c))
1421                         {
1422                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1423                                 {
1424                                         count++;
1425                                 }
1426                         }
1427                 }
1428         }
1429         log(DEBUG,"usercount: %s %d",c->name,count);
1430         return count;
1431 }
1432
1433
1434 /* add a channel to a user, creating the record for it if needed and linking
1435  * it to the user record */
1436
1437 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1438 {
1439         if ((!user) || (!cn))
1440         {
1441                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1442                 return 0;
1443         }
1444
1445         int i = 0;
1446         chanrec* Ptr;
1447         int created = 0;
1448         char cname[MAXBUF];
1449
1450         strncpy(cname,cn,MAXBUF);
1451
1452         // we MUST declare this wherever we use FOREACH_RESULT
1453         int MOD_RESULT = 0;
1454
1455         if (strlen(cname) > CHANMAX-1)
1456         {
1457                 cname[CHANMAX-1] = '\0';
1458         }
1459
1460         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1461
1462         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1463         {
1464                 return NULL; // already on the channel!
1465         }
1466
1467
1468         if (!FindChan(cname))
1469         {
1470                 int MOD_RESULT = 0;
1471                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1472                 if (MOD_RESULT == 1) {
1473                         return NULL;
1474                 }
1475
1476                 /* create a new one */
1477                 log(DEBUG,"add_channel: creating: %s",cname);
1478                 {
1479                         chanlist[cname] = new chanrec();
1480
1481                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1482                         chanlist[cname]->topiclock = 1;
1483                         chanlist[cname]->noexternal = 1;
1484                         chanlist[cname]->created = TIME;
1485                         strcpy(chanlist[cname]->topic, "");
1486                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1487                         chanlist[cname]->topicset = 0;
1488                         Ptr = chanlist[cname];
1489                         log(DEBUG,"add_channel: created: %s",cname);
1490                         /* set created to 2 to indicate user
1491                          * is the first in the channel
1492                          * and should be given ops */
1493                         created = 2;
1494                 }
1495         }
1496         else
1497         {
1498                 /* channel exists, just fish out a pointer to its struct */
1499                 Ptr = FindChan(cname);
1500                 if (Ptr)
1501                 {
1502                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1503
1504                         // the override flag allows us to bypass channel modes
1505                         // and bans (used by servers)
1506                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1507                         {
1508                                 log(DEBUG,"Not overriding...");
1509                                 int MOD_RESULT = 0;
1510                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1511                                 if (MOD_RESULT == 1) {
1512                                         return NULL;
1513                                 }
1514                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1515
1516                                 if (!MOD_RESULT)
1517                                 {
1518                                         log(DEBUG,"add_channel: checking key, invite, etc");
1519                                         if (strcmp(Ptr->key,""))
1520                                         {
1521                                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1522                                                 if (!key)
1523                                                 {
1524                                                         log(DEBUG,"add_channel: no key given in JOIN");
1525                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1526                                                         return NULL;
1527                                                 }
1528                                                 else
1529                                                 {
1530                                                         log(DEBUG,"key at %p is %s",key,key);
1531                                                         if (strcasecmp(key,Ptr->key))
1532                                                         {
1533                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1534                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1535                                                                 return NULL;
1536                                                         }
1537                                                 }
1538                                         }
1539                                         log(DEBUG,"add_channel: no key");
1540
1541                                         if (Ptr->inviteonly)
1542                                         {
1543                                                 log(DEBUG,"add_channel: channel is +i");
1544                                                 if (user->IsInvited(Ptr->name))
1545                                                 {
1546                                                         /* user was invited to channel */
1547                                                         /* there may be an optional channel NOTICE here */
1548                                                 }
1549                                                 else
1550                                                 {
1551                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1552                                                         return NULL;
1553                                                 }
1554                                         }
1555                                         log(DEBUG,"add_channel: channel is not +i");
1556
1557                                         if (Ptr->limit)
1558                                         {
1559                                                 if (usercount(Ptr) == Ptr->limit)
1560                                                 {
1561                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1562                                                         return NULL;
1563                                                 }
1564                                         }
1565
1566                                         log(DEBUG,"add_channel: about to walk banlist");
1567
1568                                         /* check user against the channel banlist */
1569                                         if (Ptr)
1570                                         {
1571                                                 if (Ptr->bans.size())
1572                                                 {
1573                                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1574                                                         {
1575                                                                 if (match(user->GetFullHost(),i->data))
1576                                                                 {
1577                                                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1578                                                                         return NULL;
1579                                                                 }
1580                                                         }
1581                                                 }
1582                                         }
1583
1584                                         log(DEBUG,"add_channel: bans checked");
1585
1586                                 }
1587
1588
1589                                 if ((Ptr) && (user))
1590                                 {
1591                                         user->RemoveInvite(Ptr->name);
1592                                 }
1593
1594                                 log(DEBUG,"add_channel: invites removed");
1595
1596                         }
1597                         else
1598                         {
1599                                 log(DEBUG,"Overridden checks");
1600                         }
1601
1602
1603                 }
1604                 created = 1;
1605         }
1606
1607         log(DEBUG,"Passed channel checks");
1608
1609         for (int i =0; i != MAXCHANS; i++)
1610         {
1611                 log(DEBUG,"Check location %d",i);
1612                 if (user->chans[i].channel == NULL)
1613                 {
1614                         log(DEBUG,"Adding into their channel list at location %d",i);
1615
1616                         if (created == 2)
1617                         {
1618                                 /* first user in is given ops */
1619                                 user->chans[i].uc_modes = UCMODE_OP;
1620                         }
1621                         else
1622                         {
1623                                 user->chans[i].uc_modes = 0;
1624                         }
1625                         user->chans[i].channel = Ptr;
1626                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1627
1628                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1629                         {
1630                                 // use the stamdard J token with no privilages.
1631                                 char buffer[MAXBUF];
1632                                 if (created == 2)
1633                                 {
1634                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1635                                 }
1636                                 else
1637                                 {
1638                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1639                                 }
1640                                 NetSendToAll(buffer);
1641                         }
1642
1643                         log(DEBUG,"Sent JOIN to client");
1644
1645                         if (Ptr->topicset)
1646                         {
1647                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1648                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1649                         }
1650                         userlist(user,Ptr);
1651                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1652                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1653                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1654                         FOREACH_MOD OnUserJoin(user,Ptr);
1655                         return Ptr;
1656                 }
1657         }
1658         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1659         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1660         return NULL;
1661 }
1662
1663 /* remove a channel from a users record, and remove the record from memory
1664  * if the channel has become empty */
1665
1666 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1667 {
1668         if ((!user) || (!cname))
1669         {
1670                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1671                 return NULL;
1672         }
1673
1674         chanrec* Ptr;
1675         int created = 0;
1676
1677         if ((!cname) || (!user))
1678         {
1679                 return NULL;
1680         }
1681
1682         Ptr = FindChan(cname);
1683
1684         if (!Ptr)
1685         {
1686                 return NULL;
1687         }
1688
1689         FOREACH_MOD OnUserPart(user,Ptr);
1690         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1691
1692         for (int i =0; i != MAXCHANS; i++)
1693         {
1694                 /* zap it from the channel list of the user */
1695                 if (user->chans[i].channel == Ptr)
1696                 {
1697                         if (reason)
1698                         {
1699                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1700
1701                                 if (!local)
1702                                 {
1703                                         char buffer[MAXBUF];
1704                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1705                                         NetSendToAll(buffer);
1706                                 }
1707
1708
1709                         }
1710                         else
1711                         {
1712                                 if (!local)
1713                                 {
1714                                         char buffer[MAXBUF];
1715                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1716                                         NetSendToAll(buffer);
1717                                 }
1718
1719                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1720                         }
1721                         user->chans[i].uc_modes = 0;
1722                         user->chans[i].channel = NULL;
1723                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1724                         break;
1725                 }
1726         }
1727
1728         /* if there are no users left on the channel */
1729         if (!usercount(Ptr))
1730         {
1731                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1732
1733                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1734
1735                 /* kill the record */
1736                 if (iter != chanlist.end())
1737                 {
1738                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1739                         if (iter->second) delete iter->second;
1740                         chanlist.erase(iter);
1741                 }
1742         }
1743 }
1744
1745
1746 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1747 {
1748         if ((!src) || (!user) || (!Ptr) || (!reason))
1749         {
1750                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1751                 return;
1752         }
1753
1754         int i = 0;
1755         int created = 0;
1756
1757         if ((!Ptr) || (!user) || (!src))
1758         {
1759                 return;
1760         }
1761
1762         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1763
1764         if (!has_channel(user,Ptr))
1765         {
1766                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1767                 return;
1768         }
1769
1770         int MOD_RESULT = 0;
1771         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1772
1773         if (MOD_RESULT == ACR_DENY)
1774                 return;
1775
1776         if (MOD_RESULT == ACR_DEFAULT)
1777         {
1778                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1779                 {
1780                         if (cstatus(src,Ptr) == STATUS_HOP)
1781                         {
1782                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1783                         }
1784                         else
1785                         {
1786                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1787                         }
1788
1789                         return;
1790                 }
1791         }
1792
1793         for (int i =0; i != MAXCHANS; i++)
1794         {
1795                 /* zap it from the channel list of the user */
1796                 if (user->chans[i].channel)
1797                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1798                 {
1799                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1800                         user->chans[i].uc_modes = 0;
1801                         user->chans[i].channel = NULL;
1802                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1803                         break;
1804                 }
1805         }
1806
1807         /* if there are no users left on the channel */
1808         if (!usercount(Ptr))
1809         {
1810                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1811
1812                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1813
1814                 /* kill the record */
1815                 if (iter != chanlist.end())
1816                 {
1817                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1818                         if (iter->second) delete iter->second;
1819                         chanlist.erase(iter);
1820                 }
1821         }
1822 }
1823
1824
1825
1826
1827 /* This function pokes and hacks at a parameter list like the following:
1828  *
1829  * PART #winbot,#darkgalaxy :m00!
1830  *
1831  * to turn it into a series of individual calls like this:
1832  *
1833  * PART #winbot :m00!
1834  * PART #darkgalaxy :m00!
1835  *
1836  * The seperate calls are sent to a callback function provided by the caller
1837  * (the caller will usually call itself recursively). The callback function
1838  * must be a command handler. Calling this function on a line with no list causes
1839  * no action to be taken. You must provide a starting and ending parameter number
1840  * where the range of the list can be found, useful if you have a terminating
1841  * parameter as above which is actually not part of the list, or parameters
1842  * before the actual list as well. This code is used by many functions which
1843  * can function as "one to list" (see the RFC) */
1844
1845 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1846 {
1847         char plist[MAXBUF];
1848         char *param;
1849         char *pars[32];
1850         char blog[32][MAXBUF];
1851         char blog2[32][MAXBUF];
1852         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1853         char keystr[MAXBUF];
1854         char moo[MAXBUF];
1855
1856         for (int i = 0; i <32; i++)
1857                 strcpy(blog[i],"");
1858
1859         for (int i = 0; i <32; i++)
1860                 strcpy(blog2[i],"");
1861
1862         strcpy(moo,"");
1863         for (int i = 0; i <10; i++)
1864         {
1865                 if (!parameters[i])
1866                 {
1867                         parameters[i] = moo;
1868                 }
1869         }
1870         if (joins)
1871         {
1872                 if (pcnt > 1) /* we have a key to copy */
1873                 {
1874                         strlcpy(keystr,parameters[1],MAXBUF);
1875                 }
1876         }
1877
1878         if (!parameters[start])
1879         {
1880                 return 0;
1881         }
1882         if (!strchr(parameters[start],','))
1883         {
1884                 return 0;
1885         }
1886         strcpy(plist,"");
1887         for (int i = start; i <= end; i++)
1888         {
1889                 if (parameters[i])
1890                 {
1891                         strlcat(plist,parameters[i],MAXBUF);
1892                 }
1893         }
1894
1895         j = 0;
1896         param = plist;
1897
1898         t = strlen(plist);
1899         for (int i = 0; i < t; i++)
1900         {
1901                 if (plist[i] == ',')
1902                 {
1903                         plist[i] = '\0';
1904                         strlcpy(blog[j++],param,MAXBUF);
1905                         param = plist+i+1;
1906                         if (j>20)
1907                         {
1908                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1909                                 return 1;
1910                         }
1911                 }
1912         }
1913         strlcpy(blog[j++],param,MAXBUF);
1914         total = j;
1915
1916         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1917         {
1918                 strcat(keystr,",");
1919         }
1920
1921         if ((joins) && (keystr))
1922         {
1923                 if (strchr(keystr,','))
1924                 {
1925                         j = 0;
1926                         param = keystr;
1927                         t2 = strlen(keystr);
1928                         for (int i = 0; i < t2; i++)
1929                         {
1930                                 if (keystr[i] == ',')
1931                                 {
1932                                         keystr[i] = '\0';
1933                                         strlcpy(blog2[j++],param,MAXBUF);
1934                                         param = keystr+i+1;
1935                                 }
1936                         }
1937                         strlcpy(blog2[j++],param,MAXBUF);
1938                         total2 = j;
1939                 }
1940         }
1941
1942         for (j = 0; j < total; j++)
1943         {
1944                 if (blog[j])
1945                 {
1946                         pars[0] = blog[j];
1947                 }
1948                 for (q = end; q < pcnt-1; q++)
1949                 {
1950                         if (parameters[q+1])
1951                         {
1952                                 pars[q-end+1] = parameters[q+1];
1953                         }
1954                 }
1955                 if ((joins) && (parameters[1]))
1956                 {
1957                         if (pcnt > 1)
1958                         {
1959                                 pars[1] = blog2[j];
1960                         }
1961                         else
1962                         {
1963                                 pars[1] = NULL;
1964                         }
1965                 }
1966                 /* repeatedly call the function with the hacked parameter list */
1967                 if ((joins) && (pcnt > 1))
1968                 {
1969                         if (pars[1])
1970                         {
1971                                 // pars[1] already set up and containing key from blog2[j]
1972                                 fn(pars,2,u);
1973                         }
1974                         else
1975                         {
1976                                 pars[1] = parameters[1];
1977                                 fn(pars,2,u);
1978                         }
1979                 }
1980                 else
1981                 {
1982                         fn(pars,pcnt-(end-start),u);
1983                 }
1984         }
1985
1986         return 1;
1987 }
1988
1989
1990
1991 void kill_link(userrec *user,const char* r)
1992 {
1993         user_hash::iterator iter = clientlist.find(user->nick);
1994
1995         char reason[MAXBUF];
1996
1997         strncpy(reason,r,MAXBUF);
1998
1999         if (strlen(reason)>MAXQUIT)
2000         {
2001                 reason[MAXQUIT-1] = '\0';
2002         }
2003
2004         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2005         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2006         log(DEBUG,"closing fd %d",user->fd);
2007
2008         /* bugfix, cant close() a nonblocking socket (sux!) */
2009         if (user->registered == 7) {
2010                 FOREACH_MOD OnUserQuit(user);
2011                 WriteCommonExcept(user,"QUIT :%s",reason);
2012
2013                 // Q token must go to ALL servers!!!
2014                 char buffer[MAXBUF];
2015                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2016                 NetSendToAll(buffer);
2017         }
2018
2019         /* push the socket on a stack of sockets due to be closed at the next opportunity
2020          * 'Client exited' is an exception to this as it means the client side has already
2021          * closed the socket, we don't need to do it.
2022          */
2023         fd_reap.push_back(user->fd);
2024
2025         bool do_purge = false;
2026
2027         if (user->registered == 7) {
2028                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2029                 AddWhoWas(user);
2030         }
2031
2032         if (iter != clientlist.end())
2033         {
2034                 log(DEBUG,"deleting user hash value %d",iter->second);
2035                 if ((iter->second) && (user->registered == 7)) {
2036                         if (iter->second) delete iter->second;
2037                 }
2038                 clientlist.erase(iter);
2039         }
2040
2041         if (user->registered == 7) {
2042                 purge_empty_chans();
2043         }
2044         user = NULL;
2045 }
2046
2047 void kill_link_silent(userrec *user,const char* r)
2048 {
2049         user_hash::iterator iter = clientlist.find(user->nick);
2050
2051         char reason[MAXBUF];
2052
2053         strncpy(reason,r,MAXBUF);
2054
2055         if (strlen(reason)>MAXQUIT)
2056         {
2057                 reason[MAXQUIT-1] = '\0';
2058         }
2059
2060         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2061         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2062         log(DEBUG,"closing fd %d",user->fd);
2063
2064         /* bugfix, cant close() a nonblocking socket (sux!) */
2065         if (user->registered == 7) {
2066                 FOREACH_MOD OnUserQuit(user);
2067                 WriteCommonExcept(user,"QUIT :%s",reason);
2068
2069                 // Q token must go to ALL servers!!!
2070                 char buffer[MAXBUF];
2071                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2072                 NetSendToAll(buffer);
2073         }
2074
2075         /* push the socket on a stack of sockets due to be closed at the next opportunity
2076          * 'Client exited' is an exception to this as it means the client side has already
2077          * closed the socket, we don't need to do it.
2078          */
2079         fd_reap.push_back(user->fd);
2080
2081         bool do_purge = false;
2082
2083         if (iter != clientlist.end())
2084         {
2085                 log(DEBUG,"deleting user hash value %d",iter->second);
2086                 if ((iter->second) && (user->registered == 7)) {
2087                         if (iter->second) delete iter->second;
2088                 }
2089                 clientlist.erase(iter);
2090         }
2091
2092         if (user->registered == 7) {
2093                 purge_empty_chans();
2094         }
2095 }
2096
2097
2098
2099 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2100
2101 char* Passwd(userrec *user)
2102 {
2103         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2104         {
2105                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2106                 {
2107                         return i->pass;
2108                 }
2109         }
2110         return "";
2111 }
2112
2113 bool IsDenied(userrec *user)
2114 {
2115         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2116         {
2117                 if (match(user->host,i->host) && (i->type == CC_DENY))
2118                 {
2119                         return true;
2120                 }
2121         }
2122         return false;
2123 }
2124
2125
2126
2127
2128 /* sends out an error notice to all connected clients (not to be used
2129  * lightly!) */
2130
2131 void send_error(char *s)
2132 {
2133         log(DEBUG,"send_error: %s",s);
2134         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2135         {
2136                 if (isnick(i->second->nick))
2137                 {
2138                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2139                 }
2140                 else
2141                 {
2142                         // fix - unregistered connections receive ERROR, not NOTICE
2143                         Write(i->second->fd,"ERROR :%s",s);
2144                 }
2145         }
2146 }
2147
2148 void Error(int status)
2149 {
2150         signal (SIGALRM, SIG_IGN);
2151         signal (SIGPIPE, SIG_IGN);
2152         signal (SIGTERM, SIG_IGN);
2153         signal (SIGABRT, SIG_IGN);
2154         signal (SIGSEGV, SIG_IGN);
2155         signal (SIGURG, SIG_IGN);
2156         signal (SIGKILL, SIG_IGN);
2157         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2158         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2159         Exit(status);
2160 }
2161
2162
2163 int main(int argc, char **argv)
2164 {
2165         Start();
2166         srand(time(NULL));
2167         log(DEBUG,"*** InspIRCd starting up!");
2168         if (!FileExists(CONFIG_FILE))
2169         {
2170                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2171                 log(DEFAULT,"main: no config");
2172                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2173                 Exit(ERROR);
2174         }
2175         if (argc > 1) {
2176                 for (int i = 1; i < argc; i++)
2177                 {
2178                         if (!strcmp(argv[i],"-nofork")) {
2179                                 nofork = true;
2180                         }
2181                         if (!strcmp(argv[i],"-wait")) {
2182                                 sleep(6);
2183                         }
2184                 }
2185         }
2186         strlcpy(MyExecutable,argv[0],MAXBUF);
2187
2188         if (InspIRCd() == ERROR)
2189         {
2190                 log(DEFAULT,"main: daemon function bailed");
2191                 printf("ERROR: could not initialise. Shutting down.\n");
2192                 Exit(ERROR);
2193         }
2194         Exit(TRUE);
2195         return 0;
2196 }
2197
2198 template<typename T> inline string ConvToStr(const T &in)
2199 {
2200         stringstream tmp;
2201         if (!(tmp << in)) return string();
2202         return tmp.str();
2203 }
2204
2205 /* re-allocates a nick in the user_hash after they change nicknames,
2206  * returns a pointer to the new user as it may have moved */
2207
2208 userrec* ReHashNick(char* Old, char* New)
2209 {
2210         user_hash::iterator newnick;
2211         user_hash::iterator oldnick = clientlist.find(Old);
2212
2213         log(DEBUG,"ReHashNick: %s %s",Old,New);
2214
2215         if (!strcasecmp(Old,New))
2216         {
2217                 log(DEBUG,"old nick is new nick, skipping");
2218                 return oldnick->second;
2219         }
2220
2221         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2222
2223         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2224
2225         clientlist[New] = new userrec();
2226         clientlist[New] = oldnick->second;
2227         clientlist.erase(oldnick);
2228
2229         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2230
2231         return clientlist[New];
2232 }
2233
2234 /* adds or updates an entry in the whowas list */
2235 void AddWhoWas(userrec* u)
2236 {
2237         user_hash::iterator iter = whowas.find(u->nick);
2238         userrec *a = new userrec();
2239         strlcpy(a->nick,u->nick,NICKMAX);
2240         strlcpy(a->ident,u->ident,64);
2241         strlcpy(a->dhost,u->dhost,256);
2242         strlcpy(a->host,u->host,256);
2243         strlcpy(a->fullname,u->fullname,128);
2244         strlcpy(a->server,u->server,256);
2245         a->signon = u->signon;
2246
2247         /* MAX_WHOWAS:   max number of /WHOWAS items
2248          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2249          *               can be replaced by a newer one
2250          */
2251
2252         if (iter == whowas.end())
2253         {
2254                 if (whowas.size() == WHOWAS_MAX)
2255                 {
2256                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2257                         {
2258                                 // 3600 seconds in an hour ;)
2259                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2260                                 {
2261                                         if (i->second) delete i->second;
2262                                         i->second = a;
2263                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2264                                         return;
2265                                 }
2266                         }
2267                 }
2268                 else
2269                 {
2270                         log(DEBUG,"added fresh WHOWAS entry");
2271                         whowas[a->nick] = a;
2272                 }
2273         }
2274         else
2275         {
2276                 log(DEBUG,"updated WHOWAS entry");
2277                 if (iter->second) delete iter->second;
2278                 iter->second = a;
2279         }
2280 }
2281
2282
2283 /* add a client connection to the sockets list */
2284 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2285 {
2286         int i;
2287         int blocking = 1;
2288         char resolved[MAXBUF];
2289         string tempnick;
2290         char tn2[MAXBUF];
2291         user_hash::iterator iter;
2292
2293         tempnick = ConvToStr(socket) + "-unknown";
2294         sprintf(tn2,"%d-unknown",socket);
2295
2296         iter = clientlist.find(tempnick);
2297
2298         if (iter != clientlist.end()) return;
2299
2300         /*
2301          * It is OK to access the value here this way since we know
2302          * it exists, we just created it above.
2303          *
2304          * At NO other time should you access a value in a map or a
2305          * hash_map this way.
2306          */
2307         clientlist[tempnick] = new userrec();
2308
2309         NonBlocking(socket);
2310         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2311
2312         clientlist[tempnick]->fd = socket;
2313         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2314         strncpy(clientlist[tempnick]->host, host,160);
2315         strncpy(clientlist[tempnick]->dhost, host,160);
2316         strncpy(clientlist[tempnick]->server, ServerName,256);
2317         strncpy(clientlist[tempnick]->ident, "unknown",9);
2318         clientlist[tempnick]->registered = 0;
2319         clientlist[tempnick]->signon = TIME+dns_timeout;
2320         clientlist[tempnick]->lastping = 1;
2321         clientlist[tempnick]->port = port;
2322         strncpy(clientlist[tempnick]->ip,ip,32);
2323
2324         // set the registration timeout for this user
2325         unsigned long class_regtimeout = 90;
2326         int class_flood = 0;
2327
2328         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2329         {
2330                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2331                 {
2332                         class_regtimeout = (unsigned long)i->registration_timeout;
2333                         class_flood = i->flood;
2334                         clientlist[tempnick]->pingmax = i->pingtime;
2335                         break;
2336                 }
2337         }
2338
2339         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2340         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2341         clientlist[tempnick]->flood = class_flood;
2342
2343         for (int i = 0; i < MAXCHANS; i++)
2344         {
2345                 clientlist[tempnick]->chans[i].channel = NULL;
2346                 clientlist[tempnick]->chans[i].uc_modes = 0;
2347         }
2348
2349         if (clientlist.size() == MAXCLIENTS)
2350                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2351
2352
2353         char* e = matches_exception(ip);
2354         if (!e)
2355         {
2356                 char* r = matches_zline(ip);
2357                 if (r)
2358                 {
2359                         char reason[MAXBUF];
2360                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2361                         kill_link(clientlist[tempnick],reason);
2362                 }
2363         }
2364 }
2365
2366 // this function counts all users connected, wether they are registered or NOT.
2367 int usercnt(void)
2368 {
2369         return clientlist.size();
2370 }
2371
2372 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2373 int registered_usercount(void)
2374 {
2375         int c = 0;
2376         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2377         {
2378                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2379         }
2380         return c;
2381 }
2382
2383 int usercount_invisible(void)
2384 {
2385         int c = 0;
2386
2387         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2388         {
2389                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2390         }
2391         return c;
2392 }
2393
2394 int usercount_opers(void)
2395 {
2396         int c = 0;
2397
2398         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2399         {
2400                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2401         }
2402         return c;
2403 }
2404
2405 int usercount_unknown(void)
2406 {
2407         int c = 0;
2408
2409         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2410         {
2411                 if ((i->second->fd) && (i->second->registered != 7))
2412                         c++;
2413         }
2414         return c;
2415 }
2416
2417 long chancount(void)
2418 {
2419         return chanlist.size();
2420 }
2421
2422 long count_servs(void)
2423 {
2424         int c = 0;
2425         //for (int j = 0; j < 255; j++)
2426         //{
2427         //      if (servers[j] != NULL)
2428         //              c++;
2429         //}
2430         return c;
2431 }
2432
2433 long servercount(void)
2434 {
2435         return count_servs()+1;
2436 }
2437
2438 long local_count()
2439 {
2440         int c = 0;
2441         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2442         {
2443                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2444         }
2445         return c;
2446 }
2447
2448
2449 void ShowMOTD(userrec *user)
2450 {
2451         std::string WholeMOTD = "";
2452         if (!MOTD.size())
2453         {
2454                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2455                 return;
2456         }
2457         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2458         for (int i = 0; i != MOTD.size(); i++)
2459         {
2460                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2461         }
2462         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2463         // only one write operation
2464         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2465
2466 }
2467
2468 void ShowRULES(userrec *user)
2469 {
2470         if (!RULES.size())
2471         {
2472                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2473                 return;
2474         }
2475         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2476         for (int i = 0; i != RULES.size(); i++)
2477         {
2478                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2479         }
2480         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2481 }
2482
2483 /* shows the message of the day, and any other on-logon stuff */
2484 void FullConnectUser(userrec* user)
2485 {
2486         user->registered = 7;
2487         user->idle_lastmsg = TIME;
2488         log(DEBUG,"ConnectUser: %s",user->nick);
2489
2490         if (strcmp(Passwd(user),"") && (!user->haspassed))
2491         {
2492                 kill_link(user,"Invalid password");
2493                 return;
2494         }
2495         if (IsDenied(user))
2496         {
2497                 kill_link(user,"Unauthorised connection");
2498                 return;
2499         }
2500
2501         char match_against[MAXBUF];
2502         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2503         char* e = matches_exception(match_against);
2504         if (!e)
2505         {
2506                 char* r = matches_gline(match_against);
2507                 if (r)
2508                 {
2509                         char reason[MAXBUF];
2510                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2511                         kill_link_silent(user,reason);
2512                         return;
2513                 }
2514                 r = matches_kline(user->host);
2515                 if (r)
2516                 {
2517                         char reason[MAXBUF];
2518                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2519                         kill_link_silent(user,reason);
2520                         return;
2521                 }
2522         }
2523
2524         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2525         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2526         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2527         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2528         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2529         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2530         std::stringstream v;
2531         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2532         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2533         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2534         v << std::string(Network);
2535         std::string data005 = v.str();
2536         FOREACH_MOD On005Numeric(data005);
2537         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2538         // so i'd better split it :)
2539         std::stringstream out(data005);
2540         std::string token = "";
2541         std::string line5 = "";
2542         int token_counter = 0;
2543         while (!out.eof())
2544         {
2545                 out >> token;
2546                 line5 = line5 + token + " ";
2547                 token_counter++;
2548                 if ((token_counter >= 13) || (out.eof() == true))
2549                 {
2550                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2551                         line5 = "";
2552                         token_counter = 0;
2553                 }
2554         }
2555         ShowMOTD(user);
2556         FOREACH_MOD OnUserConnect(user);
2557         WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]",user->port,user->nick,user->ident,user->host,user->ip);
2558
2559         char buffer[MAXBUF];
2560         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);
2561         NetSendToAll(buffer);
2562 }
2563
2564 /* shows the message of the day, and any other on-logon stuff */
2565 void ConnectUser(userrec *user)
2566 {
2567         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2568         if ((user->dns_done) && (user->registered >= 3))
2569         {
2570                 FullConnectUser(user);
2571         }
2572 }
2573
2574 void handle_version(char **parameters, int pcnt, userrec *user)
2575 {
2576         char Revision[] = "$Revision$";
2577
2578         char *s1 = Revision;
2579         char *savept;
2580         char *v1 = strtok_r(s1," ",&savept);
2581         s1 = savept;
2582         char *v2 = strtok_r(s1," ",&savept);
2583         s1 = savept;
2584
2585         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2586 }
2587
2588
2589 // calls a handler function for a command
2590
2591 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2592 {
2593                 for (int i = 0; i < cmdlist.size(); i++)
2594                 {
2595                         if (!strcasecmp(cmdlist[i].command,commandname))
2596                         {
2597                                 if (cmdlist[i].handler_function)
2598                                 {
2599                                         if (pcnt>=cmdlist[i].min_params)
2600                                         {
2601                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2602                                                 {
2603                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2604                                                 }
2605                                         }
2606                                 }
2607                         }
2608                 }
2609 }
2610
2611 void DoSplitEveryone()
2612 {
2613         bool go_again = true;
2614         while (go_again)
2615         {
2616                 go_again = false;
2617                 for (int i = 0; i < 32; i++)
2618                 {
2619                         if (me[i] != NULL)
2620                         {
2621                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2622                                 {
2623                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2624                                         {
2625                                                 j->routes.clear();
2626                                                 j->CloseConnection();
2627                                                 me[i]->connectors.erase(j);
2628                                                 go_again = true;
2629                                                 break;
2630                                         }
2631                                 }
2632                         }
2633                 }
2634         }
2635         log(DEBUG,"Removed server. Will remove clients...");
2636         // iterate through the userlist and remove all users on this server.
2637         // because we're dealing with a mesh, we dont have to deal with anything
2638         // "down-route" from this server (nice huh)
2639         go_again = true;
2640         char reason[MAXBUF];
2641         while (go_again)
2642         {
2643                 go_again = false;
2644                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2645                 {
2646                         if (strcasecmp(u->second->server,ServerName))
2647                         {
2648                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2649                                 kill_link(u->second,reason);
2650                                 go_again = true;
2651                                 break;
2652                         }
2653                 }
2654         }
2655 }
2656
2657
2658
2659 char islast(const char* s)
2660 {
2661         char c = '`';
2662         for (int j = 0; j < 32; j++)
2663         {
2664                 if (me[j] != NULL)
2665                 {
2666                         for (int k = 0; k < me[j]->connectors.size(); k++)
2667                         {
2668                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2669                                 {
2670                                         c = '|';
2671                                 }
2672                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2673                                 {
2674                                         c = '`';
2675                                 }
2676                         }
2677                 }
2678         }
2679         return c;
2680 }
2681
2682 long map_count(const char* s)
2683 {
2684         int c = 0;
2685         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2686         {
2687                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2688         }
2689         return c;
2690 }
2691
2692
2693 void force_nickchange(userrec* user,const char* newnick)
2694 {
2695         char nick[MAXBUF];
2696         int MOD_RESULT = 0;
2697
2698         strcpy(nick,"");
2699
2700         FOREACH_RESULT(OnUserPreNick(user,newnick));
2701         if (MOD_RESULT) {
2702                 kill_link(user,"Nickname collision");
2703                 return;
2704         }
2705         if (matches_qline(newnick))
2706         {
2707                 kill_link(user,"Nickname collision");
2708                 return;
2709         }
2710
2711         if (user)
2712         {
2713                 if (newnick)
2714                 {
2715                         strncpy(nick,newnick,MAXBUF);
2716                 }
2717                 if (user->registered == 7)
2718                 {
2719                         char* pars[1];
2720                         pars[0] = nick;
2721                         handle_nick(pars,1,user);
2722                 }
2723         }
2724 }
2725
2726
2727 int process_parameters(char **command_p,char *parameters)
2728 {
2729         int i = 0;
2730         int j = 0;
2731         int q = 0;
2732         q = strlen(parameters);
2733         if (!q)
2734         {
2735                 /* no parameters, command_p invalid! */
2736                 return 0;
2737         }
2738         if (parameters[0] == ':')
2739         {
2740                 command_p[0] = parameters+1;
2741                 return 1;
2742         }
2743         if (q)
2744         {
2745                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2746                 {
2747                         /* only one parameter */
2748                         command_p[0] = parameters;
2749                         if (parameters[0] == ':')
2750                         {
2751                                 if (strchr(parameters,' ') != NULL)
2752                                 {
2753                                         command_p[0]++;
2754                                 }
2755                         }
2756                         return 1;
2757                 }
2758         }
2759         command_p[j++] = parameters;
2760         for (int i = 0; i <= q; i++)
2761         {
2762                 if (parameters[i] == ' ')
2763                 {
2764                         command_p[j++] = parameters+i+1;
2765                         parameters[i] = '\0';
2766                         if (command_p[j-1][0] == ':')
2767                         {
2768                                 *command_p[j-1]++; /* remove dodgy ":" */
2769                                 break;
2770                                 /* parameter like this marks end of the sequence */
2771                         }
2772                 }
2773         }
2774         return j; /* returns total number of items in the list */
2775 }
2776
2777 void process_command(userrec *user, char* cmd)
2778 {
2779         char *parameters;
2780         char *command;
2781         char *command_p[127];
2782         char p[MAXBUF], temp[MAXBUF];
2783         int i, j, items, cmd_found;
2784
2785         for (int i = 0; i < 127; i++)
2786                 command_p[i] = NULL;
2787
2788         if (!user)
2789         {
2790                 return;
2791         }
2792         if (!cmd)
2793         {
2794                 return;
2795         }
2796         if (!strcmp(cmd,""))
2797         {
2798                 return;
2799         }
2800
2801         int total_params = 0;
2802         if (strlen(cmd)>2)
2803         {
2804                 for (int q = 0; q < strlen(cmd)-1; q++)
2805                 {
2806                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2807                         {
2808                                 total_params++;
2809                                 // found a 'trailing', we dont count them after this.
2810                                 break;
2811                         }
2812                         if (cmd[q] == ' ')
2813                                 total_params++;
2814                 }
2815         }
2816
2817         // another phidjit bug...
2818         if (total_params > 126)
2819         {
2820                 //kill_link(user,"Protocol violation (1)");
2821                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2822                 return;
2823         }
2824
2825         strlcpy(temp,cmd,MAXBUF);
2826
2827         std::string tmp = cmd;
2828         for (int i = 0; i <= MODCOUNT; i++)
2829         {
2830                 std::string oldtmp = tmp;
2831                 modules[i]->OnServerRaw(tmp,true,user);
2832                 if (oldtmp != tmp)
2833                 {
2834                         log(DEBUG,"A Module changed the input string!");
2835                         log(DEBUG,"New string: %s",tmp.c_str());
2836                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2837                         break;
2838                 }
2839         }
2840         strlcpy(cmd,tmp.c_str(),MAXBUF);
2841         strlcpy(temp,cmd,MAXBUF);
2842
2843         if (!strchr(cmd,' '))
2844         {
2845                 /* no parameters, lets skip the formalities and not chop up
2846                  * the string */
2847                 log(DEBUG,"About to preprocess command with no params");
2848                 items = 0;
2849                 command_p[0] = NULL;
2850                 parameters = NULL;
2851                 for (int i = 0; i <= strlen(cmd); i++)
2852                 {
2853                         cmd[i] = toupper(cmd[i]);
2854                 }
2855                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2856                 command = cmd;
2857         }
2858         else
2859         {
2860                 strcpy(cmd,"");
2861                 j = 0;
2862                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2863                 for (int i = 0; i < strlen(temp); i++)
2864                 {
2865                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2866                         {
2867                                 cmd[j++] = temp[i];
2868                                 cmd[j] = 0;
2869                         }
2870                 }
2871                 /* split the full string into a command plus parameters */
2872                 parameters = p;
2873                 strcpy(p," ");
2874                 command = cmd;
2875                 if (strchr(cmd,' '))
2876                 {
2877                         for (int i = 0; i <= strlen(cmd); i++)
2878                         {
2879                                 /* capitalise the command ONLY, leave params intact */
2880                                 cmd[i] = toupper(cmd[i]);
2881                                 /* are we nearly there yet?! :P */
2882                                 if (cmd[i] == ' ')
2883                                 {
2884                                         command = cmd;
2885                                         parameters = cmd+i+1;
2886                                         cmd[i] = '\0';
2887                                         break;
2888                                 }
2889                         }
2890                 }
2891                 else
2892                 {
2893                         for (int i = 0; i <= strlen(cmd); i++)
2894                         {
2895                                 cmd[i] = toupper(cmd[i]);
2896                         }
2897                 }
2898
2899         }
2900         cmd_found = 0;
2901
2902         if (strlen(command)>MAXCOMMAND)
2903         {
2904                 //kill_link(user,"Protocol violation (2)");
2905                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2906                 return;
2907         }
2908
2909         for (int x = 0; x < strlen(command); x++)
2910         {
2911                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2912                 {
2913                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2914                         {
2915                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2916                                 {
2917                                         //kill_link(user,"Protocol violation (3)");
2918                                         WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2919                                         return;
2920                                 }
2921                         }
2922                 }
2923         }
2924
2925         for (int i = 0; i != cmdlist.size(); i++)
2926         {
2927                 if (strcmp(cmdlist[i].command,""))
2928                 {
2929                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2930                         {
2931                                 log(DEBUG,"Found matching command");
2932
2933                                 if (parameters)
2934                                 {
2935                                         if (strcmp(parameters,""))
2936                                         {
2937                                                 items = process_parameters(command_p,parameters);
2938                                         }
2939                                         else
2940                                         {
2941                                                 items = 0;
2942                                                 command_p[0] = NULL;
2943                                         }
2944                                 }
2945                                 else
2946                                 {
2947                                         items = 0;
2948                                         command_p[0] = NULL;
2949                                 }
2950
2951                                 if (user)
2952                                 {
2953                                         log(DEBUG,"Processing command");
2954
2955                                         /* activity resets the ping pending timer */
2956                                         user->nping = TIME + user->pingmax;
2957                                         if ((items) < cmdlist[i].min_params)
2958                                         {
2959                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2960                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2961                                                 return;
2962                                         }
2963                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2964                                         {
2965                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2966                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2967                                                 cmd_found = 1;
2968                                                 return;
2969                                         }
2970                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
2971                                         {
2972                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2973                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
2974                                                 cmd_found = 1;
2975                                                 return;
2976                                         }
2977                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2978                                          * deny command! */
2979                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2980                                         {
2981                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2982                                                 {
2983                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2984                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2985                                                         return;
2986                                                 }
2987                                         }
2988                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
2989                                         {
2990                                                 char* mycmd;
2991                                                 char* savept2;
2992                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
2993                                                 while (mycmd)
2994                                                 {
2995                                                         if (!strcasecmp(mycmd,command))
2996                                                         {
2997                                                                 // command is disabled!
2998                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
2999                                                                 return;
3000                                                         }
3001                                                         mycmd = strtok_r(NULL," ",&savept2);
3002                                                 }
3003
3004
3005                                         }
3006                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
3007                                         {
3008                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
3009                                                 if (cmdlist[i].handler_function)
3010                                                 {
3011                                                         /* ikky /stats counters */
3012                                                         if (temp)
3013                                                         {
3014                                                                 if (user)
3015                                                                 {
3016                                                                         user->bytes_in += strlen(temp);
3017                                                                         user->cmds_in++;
3018                                                                         user->bytes_out+=strlen(temp);
3019                                                                         user->cmds_out++;
3020                                                                 }
3021                                                                 cmdlist[i].use_count++;
3022                                                                 cmdlist[i].total_bytes+=strlen(temp);
3023                                                         }
3024
3025                                                         /* WARNING: nothing may come after the
3026                                                          * command handler call, as the handler
3027                                                          * may free the user structure! */
3028
3029                                                         cmdlist[i].handler_function(command_p,items,user);
3030                                                 }
3031                                                 return;
3032                                         }
3033                                         else
3034                                         {
3035                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3036                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3037                                                 return;
3038                                         }
3039                                 }
3040                                 cmd_found = 1;
3041                         }
3042                 }
3043         }
3044         if ((!cmd_found) && (user))
3045         {
3046                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
3047                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3048         }
3049 }
3050
3051
3052 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3053 {
3054         command_t comm;
3055         /* create the command and push it onto the table */
3056         strlcpy(comm.command,cmd,MAXBUF);
3057         strlcpy(comm.source,source,MAXBUF);
3058         comm.handler_function = f;
3059         comm.flags_needed = flags;
3060         comm.min_params = minparams;
3061         comm.use_count = 0;
3062         comm.total_bytes = 0;
3063         cmdlist.push_back(comm);
3064         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
3065 }
3066
3067 bool removecommands(const char* source)
3068 {
3069         bool go_again = true;
3070         while (go_again)
3071         {
3072                 go_again = false;
3073                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3074                 {
3075                         if (!strcmp(i->source,source))
3076                         {
3077                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3078                                 cmdlist.erase(i);
3079                                 go_again = true;
3080                                 break;
3081                         }
3082                 }
3083         }
3084         return true;
3085 }
3086
3087 void SetupCommandTable(void)
3088 {
3089         createcommand("USER",handle_user,0,4,"<core>");
3090         createcommand("NICK",handle_nick,0,1,"<core>");
3091         createcommand("QUIT",handle_quit,0,0,"<core>");
3092         createcommand("VERSION",handle_version,0,0,"<core>");
3093         createcommand("PING",handle_ping,0,1,"<core>");
3094         createcommand("PONG",handle_pong,0,1,"<core>");
3095         createcommand("ADMIN",handle_admin,0,0,"<core>");
3096         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3097         createcommand("INFO",handle_info,0,0,"<core>");
3098         createcommand("TIME",handle_time,0,0,"<core>");
3099         createcommand("WHOIS",handle_whois,0,1,"<core>");
3100         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3101         createcommand("NOTICE",handle_notice,0,2,"<core>");
3102         createcommand("JOIN",handle_join,0,1,"<core>");
3103         createcommand("NAMES",handle_names,0,0,"<core>");
3104         createcommand("PART",handle_part,0,1,"<core>");
3105         createcommand("KICK",handle_kick,0,2,"<core>");
3106         createcommand("MODE",handle_mode,0,1,"<core>");
3107         createcommand("TOPIC",handle_topic,0,1,"<core>");
3108         createcommand("WHO",handle_who,0,1,"<core>");
3109         createcommand("MOTD",handle_motd,0,0,"<core>");
3110         createcommand("RULES",handle_rules,0,0,"<core>");
3111         createcommand("OPER",handle_oper,0,2,"<core>");
3112         createcommand("LIST",handle_list,0,0,"<core>");
3113         createcommand("DIE",handle_die,'o',1,"<core>");
3114         createcommand("RESTART",handle_restart,'o',1,"<core>");
3115         createcommand("KILL",handle_kill,'o',2,"<core>");
3116         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3117         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3118         createcommand("STATS",handle_stats,0,1,"<core>");
3119         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3120         createcommand("AWAY",handle_away,0,0,"<core>");
3121         createcommand("ISON",handle_ison,0,0,"<core>");
3122         createcommand("SUMMON",handle_summon,0,0,"<core>");
3123         createcommand("USERS",handle_users,0,0,"<core>");
3124         createcommand("INVITE",handle_invite,0,2,"<core>");
3125         createcommand("PASS",handle_pass,0,1,"<core>");
3126         createcommand("TRACE",handle_trace,'o',0,"<core>");
3127         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3128         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3129         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3130         createcommand("MODULES",handle_modules,0,0,"<core>");
3131         createcommand("LINKS",handle_links,0,0,"<core>");
3132         createcommand("MAP",handle_map,0,0,"<core>");
3133         createcommand("KLINE",handle_kline,'o',1,"<core>");
3134         createcommand("GLINE",handle_gline,'o',1,"<core>");
3135         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3136         createcommand("QLINE",handle_qline,'o',1,"<core>");
3137         createcommand("ELINE",handle_eline,'o',1,"<core>");
3138         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3139         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3140         createcommand("SERVER",handle_server,0,0,"<core>");
3141 }
3142
3143 void process_buffer(const char* cmdbuf,userrec *user)
3144 {
3145         if (!user)
3146         {
3147                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3148                 return;
3149         }
3150         char cmd[MAXBUF];
3151         int i;
3152         if (!cmdbuf)
3153         {
3154                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3155                 return;
3156         }
3157         if (!strcmp(cmdbuf,""))
3158         {
3159                 return;
3160         }
3161         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
3162
3163         strlcpy(cmd,cmdbuf,MAXBUF);
3164         if (!strcmp(cmd,""))
3165         {
3166                 return;
3167         }
3168         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3169         {
3170                 cmd[strlen(cmd)-1] = '\0';
3171         }
3172         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3173         {
3174                 cmd[strlen(cmd)-1] = '\0';
3175         }
3176
3177         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
3178         {
3179                 cmd[strlen(cmd)-1] = '\0';
3180         }
3181
3182         if (!strcmp(cmd,""))
3183         {
3184                 return;
3185         }
3186         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
3187         tidystring(cmd);
3188         if ((user) && (cmd))
3189         {
3190                 process_command(user,cmd);
3191         }
3192 }
3193
3194 void DoSync(serverrec* serv, char* tcp_host)
3195 {
3196         char data[MAXBUF];
3197         log(DEBUG,"Sending sync");
3198         // send start of sync marker: Y <timestamp>
3199         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3200         // except the ones its receiving it from.
3201         snprintf(data,MAXBUF,"Y %d",TIME);
3202         serv->SendPacket(data,tcp_host);
3203         // send users and channels
3204         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3205         {
3206                 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);
3207                 serv->SendPacket(data,tcp_host);
3208                 if (strchr(u->second->modes,'o'))
3209                 {
3210                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3211                         serv->SendPacket(data,tcp_host);
3212                 }
3213                 for (int i = 0; i <= MODCOUNT; i++)
3214                 {
3215                         string_list l = modules[i]->OnUserSync(u->second);
3216                         for (int j = 0; j < l.size(); j++)
3217                         {
3218                                 strlcpy(data,l[j].c_str(),MAXBUF);
3219                                 serv->SendPacket(data,tcp_host);
3220                         }
3221                 }
3222                 if (strcmp(chlist(u->second),""))
3223                 {
3224                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
3225                         serv->SendPacket(data,tcp_host);
3226                 }
3227         }
3228         // send channel modes, topics etc...
3229         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3230         {
3231                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3232                 serv->SendPacket(data,tcp_host);
3233                 for (int i = 0; i <= MODCOUNT; i++)
3234                 {
3235                         string_list l = modules[i]->OnChannelSync(c->second);
3236                         for (int j = 0; j < l.size(); j++)
3237                         {
3238                                 strlcpy(data,l[j].c_str(),MAXBUF);
3239                                 serv->SendPacket(data,tcp_host);
3240                         }
3241                 }
3242                 if (strcmp(c->second->topic,""))
3243                 {
3244                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3245                         serv->SendPacket(data,tcp_host);
3246                 }
3247                 // send current banlist
3248
3249                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3250                 {
3251                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
3252                         serv->SendPacket(data,tcp_host);
3253                 }
3254         }
3255         // sync global zlines, glines, etc
3256         sync_xlines(serv,tcp_host);
3257
3258         for (int j = 0; j < 32; j++)
3259         {
3260                 if (me[j] != NULL)
3261                 {
3262                         for (int k = 0; k < me[j]->connectors.size(); k++)
3263                         {
3264                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3265                                 {
3266                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3267                                         serv->SendPacket(data,tcp_host);
3268                                         NetSendMyRoutingTable();
3269                                 }
3270                         }
3271                 }
3272         }
3273
3274         snprintf(data,MAXBUF,"F %d",TIME);
3275         serv->SendPacket(data,tcp_host);
3276         log(DEBUG,"Sent sync");
3277         // ircd sends its serverlist after the end of sync here
3278 }
3279
3280
3281 void NetSendMyRoutingTable()
3282 {
3283         // send out a line saying what is reachable to us.
3284         // E.g. if A is linked to B C and D, send out:
3285         // $ A B C D
3286         // if its only linked to B and D send out:
3287         // $ A B D
3288         // if it has no links, dont even send out the line at all.
3289         char buffer[MAXBUF];
3290         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3291         bool sendit = false;
3292         for (int i = 0; i < 32; i++)
3293         {
3294                 if (me[i] != NULL)
3295                 {
3296                         for (int j = 0; j < me[i]->connectors.size(); j++)
3297                         {
3298                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3299                                 {
3300                                         strlcat(buffer," ",MAXBUF);
3301                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3302                                         sendit = true;
3303                                 }
3304                         }
3305                 }
3306         }
3307         if (sendit)
3308                 NetSendToAll(buffer);
3309 }
3310
3311
3312 void DoSplit(const char* params)
3313 {
3314         bool go_again = true;
3315         while (go_again)
3316         {
3317                 go_again = false;
3318                 for (int i = 0; i < 32; i++)
3319                 {
3320                         if (me[i] != NULL)
3321                         {
3322                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3323                                 {
3324                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3325                                         {
3326                                                 j->routes.clear();
3327                                                 j->CloseConnection();
3328                                                 me[i]->connectors.erase(j);
3329                                                 go_again = true;
3330                                                 break;
3331                                         }
3332                                 }
3333                         }
3334                 }
3335         }
3336         log(DEBUG,"Removed server. Will remove clients...");
3337         // iterate through the userlist and remove all users on this server.
3338         // because we're dealing with a mesh, we dont have to deal with anything
3339         // "down-route" from this server (nice huh)
3340         go_again = true;
3341         char reason[MAXBUF];
3342         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3343         while (go_again)
3344         {
3345                 go_again = false;
3346                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3347                 {
3348                         if (!strcasecmp(u->second->server,params))
3349                         {
3350                                 kill_link(u->second,reason);
3351                                 go_again = true;
3352                                 break;
3353                         }
3354                 }
3355         }
3356 }
3357
3358 // removes a server. Will NOT remove its users!
3359
3360 void RemoveServer(const char* name)
3361 {
3362         bool go_again = true;
3363         while (go_again)
3364         {
3365                 go_again = false;
3366                 for (int i = 0; i < 32; i++)
3367                 {
3368                         if (me[i] != NULL)
3369                         {
3370                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3371                                 {
3372                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3373                                         {
3374                                                 j->routes.clear();
3375                                                 j->CloseConnection();
3376                                                 me[i]->connectors.erase(j);
3377                                                 go_again = true;
3378                                                 break;
3379                                         }
3380                                 }
3381                         }
3382                 }
3383         }
3384 }
3385
3386
3387 int reap_counter = 0;
3388 char MODERR[MAXBUF];
3389
3390 char* ModuleError()
3391 {
3392         return MODERR;
3393 }
3394
3395 bool UnloadModule(const char* filename)
3396 {
3397         for (int j = 0; j != module_names.size(); j++)
3398         {
3399                 if (module_names[j] == std::string(filename))
3400                 {
3401                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3402                         {
3403                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3404                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3405                                 return false;
3406                         }
3407                         // found the module
3408                         log(DEBUG,"Deleting module...");
3409                         delete modules[j];
3410                         modules[j] = NULL;
3411                         log(DEBUG,"Deleting module factory pointer...");
3412                         delete factory[j]->factory;
3413                         log(DEBUG,"Deleting module factory...");
3414                         delete factory[j];
3415                         log(DEBUG,"Erasing module entry...");
3416                         factory[j] = NULL;
3417                         // here we should locate ALL resources claimed by this module... and release them
3418                         // for example commands
3419                         log(DEBUG,"Erasing module vector...");
3420                         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3421                         {
3422                                 if (*t == NULL)
3423                                 {
3424                                         factory.erase(t);
3425                                         break;
3426                                 }
3427                         }
3428                         log(DEBUG,"Erasing module name vector...");
3429                         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3430                         {
3431                                 if (*v == std::string(filename))
3432                                 {
3433                                         module_names.erase(v);
3434                                         break;
3435                                 }
3436                         }
3437                         log(DEBUG,"Erasing module pointer...");
3438                         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3439                         {
3440                                 if (*m == NULL)
3441                                 {
3442                                         modules.erase(m);
3443                                         break;
3444                                 }
3445                         }
3446                         log(DEBUG,"Removing dependent commands...");
3447                         removecommands(filename);
3448                         log(DEFAULT,"Module %s unloaded",filename);
3449                         MODCOUNT--;
3450                         return true;
3451                 }
3452         }
3453         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3454         snprintf(MODERR,MAXBUF,"Module not loaded");
3455         return false;
3456 }
3457
3458 bool DirValid(char* dirandfile)
3459 {
3460         char work[MAXBUF];
3461         strlcpy(work,dirandfile,MAXBUF);
3462         int p = strlen(work);
3463         // we just want the dir
3464         while (strlen(work))
3465         {
3466                 if (work[p] == '/')
3467                 {
3468                         work[p] = '\0';
3469                         break;
3470                 }
3471                 work[p--] = '\0';
3472         }
3473         log(DEBUG,"Dir valid: %s",work);
3474         char buffer[MAXBUF], otherdir[MAXBUF];
3475         // Get the current working directory
3476         if( getcwd( buffer, MAXBUF ) == NULL )
3477                 return false;
3478         chdir(work);
3479         if( getcwd( otherdir, MAXBUF ) == NULL )
3480                 return false;
3481         chdir(buffer);
3482         log(DEBUG,"Dir is really: %s",otherdir);
3483         if (strlen(otherdir) >= strlen(work))
3484         {
3485                 otherdir[strlen(work)] = '\0';
3486                 log(DEBUG,"Compare: '%s' -> '%s'",otherdir,work);
3487                 if (!strcmp(otherdir,work))
3488                 {
3489                         log(DEBUG,"Match ok");
3490                         return true;
3491                 }
3492                 log(DEBUG,"No match");
3493                 return false;
3494         }
3495         else return false;
3496 }
3497
3498 bool LoadModule(const char* filename)
3499 {
3500         char modfile[MAXBUF];
3501         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3502         if (!DirValid(modfile))
3503         {
3504                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3505                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3506                 return false;
3507         }
3508         log(DEBUG,"Loading module: %s",modfile);
3509         if (FileExists(modfile))
3510         {
3511                 for (int j = 0; j < module_names.size(); j++)
3512                 {
3513                         if (module_names[j] == std::string(filename))
3514                         {
3515                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3516                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3517                                 return false;
3518                         }
3519                 }
3520                 factory[MODCOUNT+1] = new ircd_module(modfile);
3521                 if (factory[MODCOUNT+1]->LastError())
3522                 {
3523                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3524                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3525                         MODCOUNT--;
3526                         return false;
3527                 }
3528                 if (factory[MODCOUNT+1]->factory)
3529                 {
3530                         modules[MODCOUNT+1] = factory[MODCOUNT+1]->factory->CreateModule();
3531                         /* save the module and the module's classfactory, if
3532                          * this isnt done, random crashes can occur :/ */
3533                         module_names.push_back(filename);
3534                 }
3535                 else
3536                 {
3537                         log(DEFAULT,"Unable to load %s",modfile);
3538                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3539                         return false;
3540                 }
3541         }
3542         else
3543         {
3544                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3545                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3546                 return false;
3547         }
3548         MODCOUNT++;
3549         return true;
3550 }
3551
3552 int InspIRCd(void)
3553 {
3554         struct sockaddr_in client,server;
3555         char addrs[MAXBUF][255];
3556         int incomingSockfd, result = TRUE;
3557         socklen_t length;
3558         int count = 0;
3559         int selectResult = 0, selectResult2 = 0;
3560         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3561         char resolvedHost[MAXBUF];
3562         fd_set selectFds;
3563         timeval tv;
3564
3565         log_file = fopen("ircd.log","a+");
3566         if (!log_file)
3567         {
3568                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3569                 Exit(ERROR);
3570         }
3571
3572         log(DEBUG,"InspIRCd: startup: begin");
3573         log(DEBUG,"$Id$");
3574         if (geteuid() == 0)
3575         {
3576                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3577                 Exit(ERROR);
3578                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3579         }
3580         SetupCommandTable();
3581         log(DEBUG,"InspIRCd: startup: default command table set up");
3582
3583         ReadConfig(true,NULL);
3584         if (strcmp(DieValue,""))
3585         {
3586                 printf("WARNING: %s\n\n",DieValue);
3587                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3588                 exit(0);
3589         }
3590         log(DEBUG,"InspIRCd: startup: read config");
3591
3592         int count2 = 0, count3 = 0;
3593
3594         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3595         {
3596                 ConfValue("bind","port",count,configToken,&config_f);
3597                 ConfValue("bind","address",count,Addr,&config_f);
3598                 ConfValue("bind","type",count,Type,&config_f);
3599                 if (!strcmp(Type,"servers"))
3600                 {
3601                         char Default[MAXBUF];
3602                         strcpy(Default,"no");
3603                         ConfValue("bind","default",count,Default,&config_f);
3604                         if (strchr(Default,'y'))
3605                         {
3606                                 defaultRoute = count3;
3607                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3608                         }
3609                         me[count3] = new serverrec(ServerName,100L,false);
3610                         if (!me[count3]->CreateListener(Addr,atoi(configToken)))
3611                         {
3612                                 log(DEFAULT,"Error! Failed to bind port %d",atoi(configToken));
3613                         }
3614                         else
3615                         {
3616                                 count3++;
3617                         }
3618                 }
3619                 else
3620                 {
3621                         ports[count2] = atoi(configToken);
3622                         strlcpy(addrs[count2],Addr,256);
3623                         count2++;
3624                 }
3625                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3626         }
3627         portCount = count2;
3628         UDPportCount = count3;
3629
3630         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3631
3632         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3633
3634         printf("\n");
3635
3636         /* BugFix By Craig! :p */
3637         MODCOUNT = -1;
3638         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3639         {
3640                 ConfValue("module","name",count2,configToken,&config_f);
3641                 printf("Loading module... \033[1;37m%s\033[0;37m\n",configToken);
3642                 if (!LoadModule(configToken))
3643                 {
3644                         log(DEBUG,"Exiting due to a module loader error.");
3645                         printf("There was an error loading a module: %s\n",ModuleError());
3646                         Exit(0);
3647                 }
3648         }
3649         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3650
3651         printf("\nInspIRCd is now running!\n");
3652
3653         startup_time = time(NULL);
3654
3655         if (nofork)
3656         {
3657                 log(VERBOSE,"Not forking as -nofork was specified");
3658         }
3659         else
3660         {
3661                 if (DaemonSeed() == ERROR)
3662                 {
3663                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3664                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3665                         Exit(ERROR);
3666                 }
3667         }
3668
3669         char PID[MAXBUF];
3670         ConfValue("pid","file",0,PID,&config_f);
3671         WritePID(PID);
3672
3673
3674         /* setup select call */
3675         FD_ZERO(&selectFds);
3676         log(DEBUG,"InspIRCd: startup: zero selects");
3677         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3678
3679         for (count = 0; count < portCount; count++)
3680         {
3681                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3682                 {
3683                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3684                         return(ERROR);
3685                 }
3686                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3687                 {
3688                         log(DEFAULT,"InspIRCd: startup: failed to bind port %d",ports[count]);
3689                 }
3690                 else    /* well we at least bound to one socket so we'll continue */
3691                 {
3692                         boundPortCount++;
3693                 }
3694         }
3695
3696         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3697
3698         /* if we didn't bind to anything then abort */
3699         if (boundPortCount == 0)
3700         {
3701                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3702                 return (ERROR);
3703         }
3704
3705
3706         length = sizeof (client);
3707         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3708
3709         fd_set serverfds;
3710         timeval tvs;
3711         tvs.tv_usec = 7000L;
3712         tvs.tv_sec = 0;
3713         tv.tv_sec = 0;
3714         tv.tv_usec = 7000L;
3715         char data[10240];
3716         timeval tval;
3717         fd_set sfd;
3718         tval.tv_usec = 7000L;
3719         tval.tv_sec = 0;
3720         int total_in_this_set = 0;
3721         int v = 0;
3722         bool expire_run = false;
3723
3724         /* main loop, this never returns */
3725         for (;;)
3726         {
3727 #ifdef _POSIX_PRIORITY_SCHEDULING
3728                 sched_yield();
3729 #endif
3730                 // poll dns queue
3731                 dns_poll();
3732                 FD_ZERO(&sfd);
3733
3734                 // we only read time() once per iteration rather than tons of times!
3735                 TIME = time(NULL);
3736
3737                 user_hash::iterator count2 = clientlist.begin();
3738
3739                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3740                 // them in a list, then reap the list every second or so.
3741                 if (((TIME % 5) == 0) && (!expire_run))
3742                 {
3743                         expire_lines();
3744                         expire_run = true;
3745                 }
3746                 if ((TIME % 5) == 1)
3747                         expire_run = false;
3748                 if (reap_counter>300)
3749                 {
3750                         if (fd_reap.size() > 0)
3751                         {
3752                                 for( int n = 0; n < fd_reap.size(); n++)
3753                                 {
3754                                         //Blocking(fd_reap[n]);
3755                                         close(fd_reap[n]);
3756                                         shutdown (fd_reap[n],2);
3757                                         //NonBlocking(fd_reap[n]);
3758                                 }
3759                         }
3760                         fd_reap.clear();
3761                         reap_counter=0;
3762                 }
3763                 reap_counter++;
3764
3765                 FD_ZERO(&serverfds);
3766
3767                 for (int x = 0; x != UDPportCount; x++)
3768                 {
3769                         if (me[x])
3770                                 FD_SET(me[x]->fd, &serverfds);
3771                 }
3772
3773                 // serverFds timevals went here
3774
3775                 tvs.tv_usec = 7000L;
3776                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3777                 if (servresult > 0)
3778                 {
3779                         for (int x = 0; x != UDPportCount; x++)
3780                         {
3781                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3782                                 {
3783                                         char remotehost[MAXBUF],resolved[MAXBUF];
3784                                         length = sizeof (client);
3785                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3786                                         if (incomingSockfd != -1)
3787                                         {
3788                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3789                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3790                                                 {
3791                                                         strlcpy(resolved,remotehost,MAXBUF);
3792                                                 }
3793                                                 // add to this connections ircd_connector vector
3794                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3795                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3796                                         }
3797                                 }
3798                         }
3799                 }
3800
3801                 for (int x = 0; x < UDPportCount; x++)
3802                 {
3803                         std::deque<std::string> msgs;
3804                         msgs.clear();
3805                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3806                         {
3807                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3808                                 {
3809                                         char udp_msg[MAXBUF];
3810                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3811                                         if (strlen(udp_msg)<1)
3812                                         {
3813                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3814                                                 break;
3815                                         }
3816                                         // during a netburst, send all data to all other linked servers
3817                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3818                                         {
3819                                                 if (is_uline(tcp_host))
3820                                                 {
3821                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3822                                                         {
3823                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3824                                                         }
3825                                                 }
3826                                                 else
3827                                                         NetSendToAllExcept(tcp_host,udp_msg);
3828                                         }
3829                                         std::string msg = udp_msg;
3830                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3831                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3832                                 }
3833                                 goto label;
3834                         }
3835                 }
3836
3837
3838         while (count2 != clientlist.end())
3839         {
3840                 FD_ZERO(&sfd);
3841                 total_in_this_set = 0;
3842
3843                 user_hash::iterator xcount = count2;
3844                 user_hash::iterator endingiter = count2;
3845
3846                 if (count2 == clientlist.end()) break;
3847
3848                 if (count2->second)
3849                 if (count2->second->fd != 0)
3850                 {
3851                         // assemble up to 64 sockets into an fd_set
3852                         // to implement a pooling mechanism.
3853                         //
3854                         // This should be up to 64x faster than the
3855                         // old implementation.
3856                         while (total_in_this_set < 64)
3857                         {
3858                                 if (count2 != clientlist.end())
3859                                 {
3860                                         // we don't check the state of remote users.
3861                                         if (count2->second->fd > 0)
3862                                         {
3863                                                 FD_SET (count2->second->fd, &sfd);
3864
3865                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3866                                                 // their connection class.
3867                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
3868                                                 {
3869                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3870                                                         kill_link(count2->second,"Registration timeout");
3871                                                         goto label;
3872                                                 }
3873                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3))
3874                                                 {
3875                                                                 count2->second->dns_done = true;
3876                                                                 FullConnectUser(count2->second);
3877                                                                 goto label;
3878                                                 }
3879                                                 if ((count2->second->dns_done) && (count2->second->registered == 3)) // both NICK and USER... and DNS
3880                                                 {
3881                                                         FullConnectUser(count2->second);
3882                                                         goto label;
3883                                                 }
3884                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3885                                                 {
3886                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3887                                                         {
3888                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3889                                                                 kill_link(count2->second,"Ping timeout");
3890                                                                 goto label;
3891                                                         }
3892                                                         Write(count2->second->fd,"PING :%s",ServerName);
3893                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3894                                                         count2->second->lastping = 0;
3895                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
3896                                                 }
3897                                         }
3898                                         count2++;
3899                                         total_in_this_set++;
3900                                 }
3901                                 else break;
3902                         }
3903
3904                         endingiter = count2;
3905                         count2 = xcount; // roll back to where we were
3906
3907                         v = 0;
3908
3909                         // tvals defined here
3910
3911                         tval.tv_usec = 7000L;
3912                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3913
3914                         // now loop through all of the items in this pool if any are waiting
3915                         //if (selectResult2 > 0)
3916                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3917                         {
3918
3919 #ifdef _POSIX_PRIORITY_SCHEDULING
3920                                 sched_yield();
3921 #endif
3922
3923                                 result = EAGAIN;
3924                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3925                                 {
3926                                         memset(data, 0, 10240);
3927                                         result = read(count2a->second->fd, data, 10240);
3928
3929                                         if (result)
3930                                         {
3931                                                 userrec* current = count2a->second;
3932                                                 int currfd = current->fd;
3933                                                 char* l = strtok(data,"\n");
3934                                                 int floodlines = 0;
3935                                                 while (l)
3936                                                 {
3937                                                         floodlines++;
3938                                                         if ((floodlines > current->flood) && (current->flood != 0))
3939                                                         {
3940                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3941                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3942                                                                 kill_link(current,"Excess flood");
3943                                                                 goto label;
3944                                                         }
3945                                                         char sanitized[NetBufferSize];
3946                                                         memset(sanitized, 0, NetBufferSize);
3947                                                         int ptt = 0;
3948                                                         for (int pt = 0; pt < strlen(l); pt++)
3949                                                         {
3950                                                                 if (l[pt] != '\r')
3951                                                                 {
3952                                                                         sanitized[ptt++] = l[pt];
3953                                                                 }
3954                                                         }
3955                                                         sanitized[ptt] = '\0';
3956                                                         if (strlen(sanitized))
3957                                                         {
3958
3959
3960                                                                 // we're gonna re-scan to check if the nick is gone, after every
3961                                                                 // command - if it has, we're gonna bail
3962                                                                 bool find_again = false;
3963                                                                 process_buffer(sanitized,current);
3964
3965                                                                 // look for the user's record in case it's changed
3966                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3967                                                                 {
3968                                                                         if (c2->second->fd == currfd)
3969                                                                         {
3970                                                                                 // found again, update pointer
3971                                                                                 current == c2->second;
3972                                                                                 find_again = true;
3973                                                                                 break;
3974                                                                         }
3975                                                                 }
3976                                                                 if (!find_again)
3977                                                                         goto label;
3978
3979                                                         }
3980                                                         l = strtok(NULL,"\n");
3981                                                 }
3982                                                 goto label;
3983                                         }
3984
3985                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
3986                                         {
3987                                                 log(DEBUG,"killing: %s",count2a->second->nick);
3988                                                 kill_link(count2a->second,strerror(errno));
3989                                                 goto label;
3990                                         }
3991                                 }
3992                                 // result EAGAIN means nothing read
3993                                 if (result == EAGAIN)
3994                                 {
3995                                 }
3996                                 else
3997                                 if (result == 0)
3998                                 {
3999                                         if (count2->second)
4000                                         {
4001                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4002                                                 kill_link(count2a->second,"Client exited");
4003                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4004                                                 log(DEBUG,"Bailing from client exit");
4005                                                 goto label;
4006                                         }
4007                                 }
4008                                 else if (result > 0)
4009                                 {
4010                                 }
4011                         }
4012                 }
4013                 for (int q = 0; q < total_in_this_set; q++)
4014                 {
4015                         // there is no iterator += operator :(
4016                         //if (count2 != clientlist.end())
4017                         //{
4018                                 count2++;
4019                         //}
4020                 }
4021         }
4022
4023         // set up select call
4024         for (count = 0; count < boundPortCount; count++)
4025         {
4026                 FD_SET (openSockfd[count], &selectFds);
4027         }
4028
4029         tv.tv_usec = 7000L;
4030         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4031
4032         /* select is reporting a waiting socket. Poll them all to find out which */
4033         if (selectResult > 0)
4034         {
4035                 char target[MAXBUF], resolved[MAXBUF];
4036                 for (count = 0; count < boundPortCount; count++)
4037                 {
4038                         if (FD_ISSET (openSockfd[count], &selectFds))
4039                         {
4040                                 length = sizeof (client);
4041                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4042
4043                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4044                                 strlcpy (resolved, target, MAXBUF);
4045
4046                                 if (incomingSockfd < 0)
4047                                 {
4048                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
4049                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
4050                                 }
4051                                 else
4052                                 {
4053                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4054                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
4055                                 }
4056                                 goto label;
4057                         }
4058                 }
4059         }
4060         label:
4061         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
4062 }
4063 /* not reached */
4064 close (incomingSockfd);
4065 }
4066