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