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 std::string pending_connects[MAXBUF];
 102
 103 extern int MODCOUNT;
 104
 105 bool nofork = false;
 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 void purge_empty_chans(void)
1087 {
1088         int go_again = 1, purge = 0;
1089
1090         while (go_again)
1091         {
1092                 go_again = 0;
1093                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1094                 {
1095                         if (i->second) {
1096                                 if (!usercount(i->second))
1097                                 {
1098                                         /* kill the record */
1099                                         if (i != chanlist.end())
1100                                         {
1101                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1102                                                 if (i->second) delete i->second;
1103                                                 chanlist.erase(i);
1104                                                 go_again = 1;
1105                                                 purge++;
1106                                                 break;
1107                                         }
1108                                 }
1109                                 else
1110                                 {
1111                                         log(DEBUG,"skipped purge for %s",i->second->name);
1112                                 }
1113                         }
1114                 }
1115         }
1116         log(DEBUG,"completed channel purge, killed %d",purge);
1117 }
1118
1119
1120 char scratch[MAXBUF];
1121 char sparam[MAXBUF];
1122
1123 char* chanmodes(chanrec *chan)
1124 {
1125         if (!chan)
1126         {
1127                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1128                 strcpy(scratch,"");
1129                 return scratch;
1130         }
1131
1132         strcpy(scratch,"");
1133         strcpy(sparam,"");
1134         if (chan->noexternal)
1135         {
1136                 strlcat(scratch,"n",MAXMODES);
1137         }
1138         if (chan->topiclock)
1139         {
1140                 strlcat(scratch,"t",MAXMODES);
1141         }
1142         if (strcmp(chan->key,""))
1143         {
1144                 strlcat(scratch,"k",MAXMODES);
1145         }
1146         if (chan->limit)
1147         {
1148                 strlcat(scratch,"l",MAXMODES);
1149         }
1150         if (chan->inviteonly)
1151         {
1152                 strlcat(scratch,"i",MAXMODES);
1153         }
1154         if (chan->moderated)
1155         {
1156                 strlcat(scratch,"m",MAXMODES);
1157         }
1158         if (chan->secret)
1159         {
1160                 strlcat(scratch,"s",MAXMODES);
1161         }
1162         if (chan->c_private)
1163         {
1164                 strlcat(scratch,"p",MAXMODES);
1165         }
1166         if (strcmp(chan->key,""))
1167         {
1168                 strlcat(sparam," ",MAXBUF);
1169                 strlcat(sparam,chan->key,MAXBUF);
1170         }
1171         if (chan->limit)
1172         {
1173                 char foo[24];
1174                 sprintf(foo," %d",chan->limit);
1175                 strlcat(sparam,foo,MAXBUF);
1176         }
1177         if (strlen(chan->custom_modes))
1178         {
1179                 strlcat(scratch,chan->custom_modes,MAXMODES);
1180                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1181                 {
1182                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1183                         if (extparam != "")
1184                         {
1185                                 strlcat(sparam," ",MAXBUF);
1186                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1187                         }
1188                 }
1189         }
1190         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1191         strlcat(scratch,sparam,MAXMODES);
1192         return scratch;
1193 }
1194
1195
1196 /* compile a userlist of a channel into a string, each nick seperated by
1197  * spaces and op, voice etc status shown as @ and + */
1198
1199 void userlist(userrec *user,chanrec *c)
1200 {
1201         if ((!c) || (!user))
1202         {
1203                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1204                 return;
1205         }
1206
1207         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1208         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1209         {
1210                 if (has_channel(i->second,c))
1211                 {
1212                         if (isnick(i->second->nick))
1213                         {
1214                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1215                                 {
1216                                         /* user is +i, and source not on the channel, does not show
1217                                          * nick in NAMES list */
1218                                         continue;
1219                                 }
1220                                 strlcat(list,cmode(i->second,c),MAXBUF);
1221                                 strlcat(list,i->second->nick,MAXBUF);
1222                                 strlcat(list," ",MAXBUF);
1223                                 if (strlen(list)>(480-NICKMAX))
1224                                 {
1225                                         /* list overflowed into
1226                                          * multiple numerics */
1227                                         WriteServ(user->fd,"%s",list);
1228                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1229                                 }
1230                         }
1231                 }
1232         }
1233         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1234         {
1235                 WriteServ(user->fd,"%s",list);
1236         }
1237 }
1238
1239 /* return a count of the users on a specific channel accounting for
1240  * invisible users who won't increase the count. e.g. for /LIST */
1241
1242 int usercount_i(chanrec *c)
1243 {
1244         int i = 0;
1245         int count = 0;
1246
1247         if (!c)
1248         {
1249                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1250                 return 0;
1251         }
1252
1253         strcpy(list,"");
1254         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1255         {
1256                 if (i->second)
1257                 {
1258                         if (has_channel(i->second,c))
1259                         {
1260                                 if (isnick(i->second->nick))
1261                                 {
1262                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1263                                         {
1264                                                 /* user is +i, and source not on the channel, does not show
1265                                                  * nick in NAMES list */
1266                                                 continue;
1267                                         }
1268                                         count++;
1269                                 }
1270                         }
1271                 }
1272         }
1273         log(DEBUG,"usercount_i: %s %d",c->name,count);
1274         return count;
1275 }
1276
1277
1278 int usercount(chanrec *c)
1279 {
1280         int i = 0;
1281         int count = 0;
1282
1283         if (!c)
1284         {
1285                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1286                 return 0;
1287         }
1288
1289         strcpy(list,"");
1290         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1291         {
1292                 if (i->second)
1293                 {
1294                         if (has_channel(i->second,c))
1295                         {
1296                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1297                                 {
1298                                         count++;
1299                                 }
1300                         }
1301                 }
1302         }
1303         log(DEBUG,"usercount: %s %d",c->name,count);
1304         return count;
1305 }
1306
1307
1308 /* add a channel to a user, creating the record for it if needed and linking
1309  * it to the user record */
1310
1311 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1312 {
1313         if ((!user) || (!cn))
1314         {
1315                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1316                 return 0;
1317         }
1318
1319         int i = 0;
1320         chanrec* Ptr;
1321         int created = 0;
1322         char cname[MAXBUF];
1323
1324         strncpy(cname,cn,MAXBUF);
1325
1326         // we MUST declare this wherever we use FOREACH_RESULT
1327         int MOD_RESULT = 0;
1328
1329         if (strlen(cname) > CHANMAX-1)
1330         {
1331                 cname[CHANMAX-1] = '\0';
1332         }
1333
1334         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1335
1336         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1337         {
1338                 return NULL; // already on the channel!
1339         }
1340
1341
1342         if (!FindChan(cname))
1343         {
1344                 int MOD_RESULT = 0;
1345                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1346                 if (MOD_RESULT == 1) {
1347                         return NULL;
1348                 }
1349
1350                 /* create a new one */
1351                 log(DEBUG,"add_channel: creating: %s",cname);
1352                 {
1353                         chanlist[cname] = new chanrec();
1354
1355                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1356                         chanlist[cname]->topiclock = 1;
1357                         chanlist[cname]->noexternal = 1;
1358                         chanlist[cname]->created = time(NULL);
1359                         strcpy(chanlist[cname]->topic, "");
1360                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1361                         chanlist[cname]->topicset = 0;
1362                         Ptr = chanlist[cname];
1363                         log(DEBUG,"add_channel: created: %s",cname);
1364                         /* set created to 2 to indicate user
1365                          * is the first in the channel
1366                          * and should be given ops */
1367                         created = 2;
1368                 }
1369         }
1370         else
1371         {
1372                 /* channel exists, just fish out a pointer to its struct */
1373                 Ptr = FindChan(cname);
1374                 if (Ptr)
1375                 {
1376                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1377
1378                         // the override flag allows us to bypass channel modes
1379                         // and bans (used by servers)
1380                         if (!override)
1381                         {
1382                                 int MOD_RESULT = 0;
1383                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1384                                 if (MOD_RESULT == 1) {
1385                                         return NULL;
1386                                 }
1387
1388                                 if (MOD_RESULT == 0)
1389                                 {
1390
1391                                         if (strcmp(Ptr->key,""))
1392                                         {
1393                                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1394                                                 if (!key)
1395                                                 {
1396                                                         log(DEBUG,"add_channel: no key given in JOIN");
1397                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1398                                                         return NULL;
1399                                                 }
1400                                                 else
1401                                                 {
1402                                                         log(DEBUG,"key at %p is %s",key,key);
1403                                                         if (strcasecmp(key,Ptr->key))
1404                                                         {
1405                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1406                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1407                                                                 return NULL;
1408                                                         }
1409                                                 }
1410                                         }
1411                                         log(DEBUG,"add_channel: no key");
1412
1413                                         if (Ptr->inviteonly)
1414                                         {
1415                                                 log(DEBUG,"add_channel: channel is +i");
1416                                                 if (user->IsInvited(Ptr->name))
1417                                                 {
1418                                                         /* user was invited to channel */
1419                                                         /* there may be an optional channel NOTICE here */
1420                                                 }
1421                                                 else
1422                                                 {
1423                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1424                                                         return NULL;
1425                                                 }
1426                                         }
1427                                         log(DEBUG,"add_channel: channel is not +i");
1428
1429                                         if (Ptr->limit)
1430                                         {
1431                                                 if (usercount(Ptr) == Ptr->limit)
1432                                                 {
1433                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1434                                                         return NULL;
1435                                                 }
1436                                         }
1437
1438                                         log(DEBUG,"add_channel: about to walk banlist");
1439
1440                                         /* check user against the channel banlist */
1441                                         if (Ptr)
1442                                         {
1443                                                 if (Ptr->bans.size())
1444                                                 {
1445                                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1446                                                         {
1447                                                                 if (match(user->GetFullHost(),i->data))
1448                                                                 {
1449                                                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1450                                                                         return NULL;
1451                                                                 }
1452                                                         }
1453                                                 }
1454                                         }
1455
1456                                         log(DEBUG,"add_channel: bans checked");
1457
1458                                 }
1459
1460
1461                                 if ((Ptr) && (user))
1462                                 {
1463                                         user->RemoveInvite(Ptr->name);
1464                                 }
1465
1466                                 log(DEBUG,"add_channel: invites removed");
1467
1468                         }
1469                         else
1470                         {
1471                                 log(DEBUG,"Overridden checks");
1472                         }
1473
1474
1475                 }
1476                 created = 1;
1477         }
1478
1479         log(DEBUG,"Passed channel checks");
1480
1481         for (int i =0; i != MAXCHANS; i++)
1482         {
1483                 log(DEBUG,"Check location %d",i);
1484                 if (user->chans[i].channel == NULL)
1485                 {
1486                         log(DEBUG,"Adding into their channel list at location %d",i);
1487
1488                         if (created == 2)
1489                         {
1490                                 /* first user in is given ops */
1491                                 user->chans[i].uc_modes = UCMODE_OP;
1492                         }
1493                         else
1494                         {
1495                                 user->chans[i].uc_modes = 0;
1496                         }
1497                         user->chans[i].channel = Ptr;
1498                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1499
1500                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1501                         {
1502                                 // use the stamdard J token with no privilages.
1503                                 char buffer[MAXBUF];
1504                                 if (created == 2)
1505                                 {
1506                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1507                                 }
1508                                 else
1509                                 {
1510                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1511                                 }
1512                                 NetSendToAll(buffer);
1513                         }
1514
1515                         log(DEBUG,"Sent JOIN to client");
1516
1517                         if (Ptr->topicset)
1518                         {
1519                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1520                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1521                         }
1522                         userlist(user,Ptr);
1523                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1524                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1525                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1526                         FOREACH_MOD OnUserJoin(user,Ptr);
1527                         return Ptr;
1528                 }
1529         }
1530         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1531         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1532         return NULL;
1533 }
1534
1535 /* remove a channel from a users record, and remove the record from memory
1536  * if the channel has become empty */
1537
1538 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1539 {
1540         if ((!user) || (!cname))
1541         {
1542                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1543                 return NULL;
1544         }
1545
1546         chanrec* Ptr;
1547         int created = 0;
1548
1549         if ((!cname) || (!user))
1550         {
1551                 return NULL;
1552         }
1553
1554         Ptr = FindChan(cname);
1555
1556         if (!Ptr)
1557         {
1558                 return NULL;
1559         }
1560
1561         FOREACH_MOD OnUserPart(user,Ptr);
1562         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1563
1564         for (int i =0; i != MAXCHANS; i++)
1565         {
1566                 /* zap it from the channel list of the user */
1567                 if (user->chans[i].channel == Ptr)
1568                 {
1569                         if (reason)
1570                         {
1571                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1572
1573                                 if (!local)
1574                                 {
1575                                         char buffer[MAXBUF];
1576                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1577                                         NetSendToAll(buffer);
1578                                 }
1579
1580
1581                         }
1582                         else
1583                         {
1584                                 if (!local)
1585                                 {
1586                                         char buffer[MAXBUF];
1587                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1588                                         NetSendToAll(buffer);
1589                                 }
1590
1591                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1592                         }
1593                         user->chans[i].uc_modes = 0;
1594                         user->chans[i].channel = NULL;
1595                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1596                         break;
1597                 }
1598         }
1599
1600         /* if there are no users left on the channel */
1601         if (!usercount(Ptr))
1602         {
1603                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1604
1605                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1606
1607                 /* kill the record */
1608                 if (iter != chanlist.end())
1609                 {
1610                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1611                         if (iter->second) delete iter->second;
1612                         chanlist.erase(iter);
1613                 }
1614         }
1615 }
1616
1617
1618 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1619 {
1620         if ((!src) || (!user) || (!Ptr) || (!reason))
1621         {
1622                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1623                 return;
1624         }
1625
1626         int i = 0;
1627         int created = 0;
1628
1629         if ((!Ptr) || (!user) || (!src))
1630         {
1631                 return;
1632         }
1633
1634         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1635
1636         if (!has_channel(user,Ptr))
1637         {
1638                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1639                 return;
1640         }
1641
1642         int MOD_RESULT = 0;
1643         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1644
1645         if (MOD_RESULT == ACR_DENY)
1646                 return;
1647
1648         if (MOD_RESULT == ACR_DEFAULT)
1649         {
1650                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1651                 {
1652                         if (cstatus(src,Ptr) == STATUS_HOP)
1653                         {
1654                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1655                         }
1656                         else
1657                         {
1658                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1659                         }
1660
1661                         return;
1662                 }
1663         }
1664
1665         for (int i =0; i != MAXCHANS; i++)
1666         {
1667                 /* zap it from the channel list of the user */
1668                 if (user->chans[i].channel)
1669                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1670                 {
1671                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1672                         user->chans[i].uc_modes = 0;
1673                         user->chans[i].channel = NULL;
1674                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1675                         break;
1676                 }
1677         }
1678
1679         /* if there are no users left on the channel */
1680         if (!usercount(Ptr))
1681         {
1682                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1683
1684                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1685
1686                 /* kill the record */
1687                 if (iter != chanlist.end())
1688                 {
1689                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1690                         if (iter->second) delete iter->second;
1691                         chanlist.erase(iter);
1692                 }
1693         }
1694 }
1695
1696
1697
1698
1699 /* This function pokes and hacks at a parameter list like the following:
1700  *
1701  * PART #winbot, #darkgalaxy :m00!
1702  *
1703  * to turn it into a series of individual calls like this:
1704  *
1705  * PART #winbot :m00!
1706  * PART #darkgalaxy :m00!
1707  *
1708  * The seperate calls are sent to a callback function provided by the caller
1709  * (the caller will usually call itself recursively). The callback function
1710  * must be a command handler. Calling this function on a line with no list causes
1711  * no action to be taken. You must provide a starting and ending parameter number
1712  * where the range of the list can be found, useful if you have a terminating
1713  * parameter as above which is actually not part of the list, or parameters
1714  * before the actual list as well. This code is used by many functions which
1715  * can function as "one to list" (see the RFC) */
1716
1717 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1718 {
1719         char plist[MAXBUF];
1720         char *param;
1721         char *pars[32];
1722         char blog[32][MAXBUF];
1723         char blog2[32][MAXBUF];
1724         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1725         char keystr[MAXBUF];
1726         char moo[MAXBUF];
1727
1728         for (int i = 0; i <32; i++)
1729                 strcpy(blog[i],"");
1730
1731         for (int i = 0; i <32; i++)
1732                 strcpy(blog2[i],"");
1733
1734         strcpy(moo,"");
1735         for (int i = 0; i <10; i++)
1736         {
1737                 if (!parameters[i])
1738                 {
1739                         parameters[i] = moo;
1740                 }
1741         }
1742         if (joins)
1743         {
1744                 if (pcnt > 1) /* we have a key to copy */
1745                 {
1746                         strlcpy(keystr,parameters[1],MAXBUF);
1747                 }
1748         }
1749
1750         if (!parameters[start])
1751         {
1752                 return 0;
1753         }
1754         if (!strchr(parameters[start],','))
1755         {
1756                 return 0;
1757         }
1758         strcpy(plist,"");
1759         for (int i = start; i <= end; i++)
1760         {
1761                 if (parameters[i])
1762                 {
1763                         strlcat(plist,parameters[i],MAXBUF);
1764                 }
1765         }
1766
1767         j = 0;
1768         param = plist;
1769
1770         t = strlen(plist);
1771         for (int i = 0; i < t; i++)
1772         {
1773                 if (plist[i] == ',')
1774                 {
1775                         plist[i] = '\0';
1776                         strlcpy(blog[j++],param,MAXBUF);
1777                         param = plist+i+1;
1778                         if (j>20)
1779                         {
1780                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1781                                 return 1;
1782                         }
1783                 }
1784         }
1785         strlcpy(blog[j++],param,MAXBUF);
1786         total = j;
1787
1788         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1789         {
1790                 strcat(keystr,",");
1791         }
1792
1793         if ((joins) && (keystr))
1794         {
1795                 if (strchr(keystr,','))
1796                 {
1797                         j = 0;
1798                         param = keystr;
1799                         t2 = strlen(keystr);
1800                         for (int i = 0; i < t2; i++)
1801                         {
1802                                 if (keystr[i] == ',')
1803                                 {
1804                                         keystr[i] = '\0';
1805                                         strlcpy(blog2[j++],param,MAXBUF);
1806                                         param = keystr+i+1;
1807                                 }
1808                         }
1809                         strlcpy(blog2[j++],param,MAXBUF);
1810                         total2 = j;
1811                 }
1812         }
1813
1814         for (j = 0; j < total; j++)
1815         {
1816                 if (blog[j])
1817                 {
1818                         pars[0] = blog[j];
1819                 }
1820                 for (q = end; q < pcnt-1; q++)
1821                 {
1822                         if (parameters[q+1])
1823                         {
1824                                 pars[q-end+1] = parameters[q+1];
1825                         }
1826                 }
1827                 if ((joins) && (parameters[1]))
1828                 {
1829                         if (pcnt > 1)
1830                         {
1831                                 pars[1] = blog2[j];
1832                         }
1833                         else
1834                         {
1835                                 pars[1] = NULL;
1836                         }
1837                 }
1838                 /* repeatedly call the function with the hacked parameter list */
1839                 if ((joins) && (pcnt > 1))
1840                 {
1841                         if (pars[1])
1842                         {
1843                                 // pars[1] already set up and containing key from blog2[j]
1844                                 fn(pars,2,u);
1845                         }
1846                         else
1847                         {
1848                                 pars[1] = parameters[1];
1849                                 fn(pars,2,u);
1850                         }
1851                 }
1852                 else
1853                 {
1854                         fn(pars,pcnt-(end-start),u);
1855                 }
1856         }
1857
1858         return 1;
1859 }
1860
1861
1862
1863 void kill_link(userrec *user,const char* r)
1864 {
1865         user_hash::iterator iter = clientlist.find(user->nick);
1866
1867         char reason[MAXBUF];
1868
1869         strncpy(reason,r,MAXBUF);
1870
1871         if (strlen(reason)>MAXQUIT)
1872         {
1873                 reason[MAXQUIT-1] = '\0';
1874         }
1875
1876         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1877         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1878         log(DEBUG,"closing fd %d",user->fd);
1879
1880         /* bugfix, cant close() a nonblocking socket (sux!) */
1881         if (user->registered == 7) {
1882                 FOREACH_MOD OnUserQuit(user);
1883                 WriteCommonExcept(user,"QUIT :%s",reason);
1884
1885                 // Q token must go to ALL servers!!!
1886                 char buffer[MAXBUF];
1887                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1888                 NetSendToAll(buffer);
1889         }
1890
1891         /* push the socket on a stack of sockets due to be closed at the next opportunity
1892          * 'Client exited' is an exception to this as it means the client side has already
1893          * closed the socket, we don't need to do it.
1894          */
1895         fd_reap.push_back(user->fd);
1896
1897         bool do_purge = false;
1898
1899         if (user->registered == 7) {
1900                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
1901                 AddWhoWas(user);
1902         }
1903
1904         if (iter != clientlist.end())
1905         {
1906                 log(DEBUG,"deleting user hash value %d",iter->second);
1907                 if ((iter->second) && (user->registered == 7)) {
1908                         if (iter->second) delete iter->second;
1909                 }
1910                 clientlist.erase(iter);
1911         }
1912
1913         if (user->registered == 7) {
1914                 purge_empty_chans();
1915         }
1916         user = NULL;
1917 }
1918
1919 void kill_link_silent(userrec *user,const char* r)
1920 {
1921         user_hash::iterator iter = clientlist.find(user->nick);
1922
1923         char reason[MAXBUF];
1924
1925         strncpy(reason,r,MAXBUF);
1926
1927         if (strlen(reason)>MAXQUIT)
1928         {
1929                 reason[MAXQUIT-1] = '\0';
1930         }
1931
1932         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1933         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1934         log(DEBUG,"closing fd %d",user->fd);
1935
1936         /* bugfix, cant close() a nonblocking socket (sux!) */
1937         if (user->registered == 7) {
1938                 FOREACH_MOD OnUserQuit(user);
1939                 WriteCommonExcept(user,"QUIT :%s",reason);
1940
1941                 // Q token must go to ALL servers!!!
1942                 char buffer[MAXBUF];
1943                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1944                 NetSendToAll(buffer);
1945         }
1946
1947         /* push the socket on a stack of sockets due to be closed at the next opportunity
1948          * 'Client exited' is an exception to this as it means the client side has already
1949          * closed the socket, we don't need to do it.
1950          */
1951         fd_reap.push_back(user->fd);
1952
1953         bool do_purge = false;
1954
1955         if (iter != clientlist.end())
1956         {
1957                 log(DEBUG,"deleting user hash value %d",iter->second);
1958                 if ((iter->second) && (user->registered == 7)) {
1959                         if (iter->second) delete iter->second;
1960                 }
1961                 clientlist.erase(iter);
1962         }
1963
1964         if (user->registered == 7) {
1965                 purge_empty_chans();
1966         }
1967 }
1968
1969
1970
1971 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1972
1973 char* Passwd(userrec *user)
1974 {
1975         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1976         {
1977                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
1978                 {
1979                         return i->pass;
1980                 }
1981         }
1982         return "";
1983 }
1984
1985 bool IsDenied(userrec *user)
1986 {
1987         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1988         {
1989                 if (match(user->host,i->host) && (i->type == CC_DENY))
1990                 {
1991                         return true;
1992                 }
1993         }
1994         return false;
1995 }
1996
1997
1998
1999
2000 /* sends out an error notice to all connected clients (not to be used
2001  * lightly!) */
2002
2003 void send_error(char *s)
2004 {
2005         log(DEBUG,"send_error: %s",s);
2006         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2007         {
2008                 if (isnick(i->second->nick))
2009                 {
2010                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2011                 }
2012                 else
2013                 {
2014                         // fix - unregistered connections receive ERROR, not NOTICE
2015                         Write(i->second->fd,"ERROR :%s",s);
2016                 }
2017         }
2018 }
2019
2020 void Error(int status)
2021 {
2022         signal (SIGALRM, SIG_IGN);
2023         signal (SIGPIPE, SIG_IGN);
2024         signal (SIGTERM, SIG_IGN);
2025         signal (SIGABRT, SIG_IGN);
2026         signal (SIGSEGV, SIG_IGN);
2027         signal (SIGURG, SIG_IGN);
2028         signal (SIGKILL, SIG_IGN);
2029         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
2030         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2031         exit(status);
2032 }
2033
2034
2035 int main(int argc, char **argv)
2036 {
2037         Start();
2038         srand(time(NULL));
2039         log(DEBUG,"*** InspIRCd starting up!");
2040         if (!FileExists(CONFIG_FILE))
2041         {
2042                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2043                 log(DEBUG,"main: no config");
2044                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2045                 Exit(ERROR);
2046         }
2047         if (argc > 1) {
2048                 for (int i = 1; i < argc; i++)
2049                 {
2050                         if (!strcmp(argv[i],"-nofork")) {
2051                                 nofork = true;
2052                         }
2053                         if (!strcmp(argv[i],"-wait")) {
2054                                 sleep(6);
2055                         }
2056                 }
2057         }
2058         strlcpy(MyExecutable,argv[0],MAXBUF);
2059
2060         if (InspIRCd() == ERROR)
2061         {
2062                 log(DEBUG,"main: daemon function bailed");
2063                 printf("ERROR: could not initialise. Shutting down.\n");
2064                 Exit(ERROR);
2065         }
2066         Exit(TRUE);
2067         return 0;
2068 }
2069
2070 template<typename T> inline string ConvToStr(const T &in)
2071 {
2072         stringstream tmp;
2073         if (!(tmp << in)) return string();
2074         return tmp.str();
2075 }
2076
2077 /* re-allocates a nick in the user_hash after they change nicknames,
2078  * returns a pointer to the new user as it may have moved */
2079
2080 userrec* ReHashNick(char* Old, char* New)
2081 {
2082         user_hash::iterator newnick;
2083         user_hash::iterator oldnick = clientlist.find(Old);
2084
2085         log(DEBUG,"ReHashNick: %s %s",Old,New);
2086
2087         if (!strcasecmp(Old,New))
2088         {
2089                 log(DEBUG,"old nick is new nick, skipping");
2090                 return oldnick->second;
2091         }
2092
2093         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2094
2095         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2096
2097         clientlist[New] = new userrec();
2098         clientlist[New] = oldnick->second;
2099         clientlist.erase(oldnick);
2100
2101         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2102
2103         return clientlist[New];
2104 }
2105
2106 /* adds or updates an entry in the whowas list */
2107 void AddWhoWas(userrec* u)
2108 {
2109         user_hash::iterator iter = whowas.find(u->nick);
2110         userrec *a = new userrec();
2111         strlcpy(a->nick,u->nick,NICKMAX);
2112         strlcpy(a->ident,u->ident,64);
2113         strlcpy(a->dhost,u->dhost,256);
2114         strlcpy(a->host,u->host,256);
2115         strlcpy(a->fullname,u->fullname,128);
2116         strlcpy(a->server,u->server,256);
2117         a->signon = u->signon;
2118
2119         /* MAX_WHOWAS:   max number of /WHOWAS items
2120          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2121          *               can be replaced by a newer one
2122          */
2123
2124         if (iter == whowas.end())
2125         {
2126                 if (whowas.size() == WHOWAS_MAX)
2127                 {
2128                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2129                         {
2130                                 // 3600 seconds in an hour ;)
2131                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
2132                                 {
2133                                         if (i->second) delete i->second;
2134                                         i->second = a;
2135                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2136                                         return;
2137                                 }
2138                         }
2139                 }
2140                 else
2141                 {
2142                         log(DEBUG,"added fresh WHOWAS entry");
2143                         whowas[a->nick] = a;
2144                 }
2145         }
2146         else
2147         {
2148                 log(DEBUG,"updated WHOWAS entry");
2149                 if (iter->second) delete iter->second;
2150                 iter->second = a;
2151         }
2152 }
2153
2154
2155 /* add a client connection to the sockets list */
2156 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2157 {
2158         int i;
2159         int blocking = 1;
2160         char resolved[MAXBUF];
2161         string tempnick;
2162         char tn2[MAXBUF];
2163         user_hash::iterator iter;
2164
2165         tempnick = ConvToStr(socket) + "-unknown";
2166         sprintf(tn2,"%d-unknown",socket);
2167
2168         iter = clientlist.find(tempnick);
2169
2170         if (iter != clientlist.end()) return;
2171
2172         /*
2173          * It is OK to access the value here this way since we know
2174          * it exists, we just created it above.
2175          *
2176          * At NO other time should you access a value in a map or a
2177          * hash_map this way.
2178          */
2179         clientlist[tempnick] = new userrec();
2180
2181         NonBlocking(socket);
2182         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2183
2184         clientlist[tempnick]->fd = socket;
2185         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2186         strncpy(clientlist[tempnick]->host, host,160);
2187         strncpy(clientlist[tempnick]->dhost, host,160);
2188         strncpy(clientlist[tempnick]->server, ServerName,256);
2189         strncpy(clientlist[tempnick]->ident, "unknown",9);
2190         clientlist[tempnick]->registered = 0;
2191         clientlist[tempnick]->signon = time(NULL);
2192         clientlist[tempnick]->nping = time(NULL)+240;
2193         clientlist[tempnick]->lastping = 1;
2194         clientlist[tempnick]->port = port;
2195         strncpy(clientlist[tempnick]->ip,ip,32);
2196
2197         // set the registration timeout for this user
2198         unsigned long class_regtimeout = 90;
2199         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2200         {
2201                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2202                 {
2203                         class_regtimeout = (unsigned long)i->registration_timeout;
2204                         break;
2205                 }
2206         }
2207
2208         int class_flood = 0;
2209         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2210         {
2211                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2212                 {
2213                         class_flood = i->flood;
2214                         break;
2215                 }
2216         }
2217
2218         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
2219         clientlist[tempnick]->flood = class_flood;
2220
2221         for (int i = 0; i < MAXCHANS; i++)
2222         {
2223                 clientlist[tempnick]->chans[i].channel = NULL;
2224                 clientlist[tempnick]->chans[i].uc_modes = 0;
2225         }
2226
2227         if (clientlist.size() == MAXCLIENTS)
2228                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2229
2230         char* r = matches_zline(ip);
2231         if (r)
2232         {
2233                 char reason[MAXBUF];
2234                 snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2235                 kill_link(clientlist[tempnick],reason);
2236         }
2237 }
2238
2239
2240 int usercnt(void)
2241 {
2242         return clientlist.size();
2243 }
2244
2245
2246 int usercount_invisible(void)
2247 {
2248         int c = 0;
2249
2250         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2251         {
2252                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2253         }
2254         return c;
2255 }
2256
2257 int usercount_opers(void)
2258 {
2259         int c = 0;
2260
2261         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2262         {
2263                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2264         }
2265         return c;
2266 }
2267
2268 int usercount_unknown(void)
2269 {
2270         int c = 0;
2271
2272         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2273         {
2274                 if ((i->second->fd) && (i->second->registered != 7))
2275                         c++;
2276         }
2277         return c;
2278 }
2279
2280 long chancount(void)
2281 {
2282         return chanlist.size();
2283 }
2284
2285 long count_servs(void)
2286 {
2287         int c = 0;
2288         //for (int j = 0; j < 255; j++)
2289         //{
2290         //      if (servers[j] != NULL)
2291         //              c++;
2292         //}
2293         return c;
2294 }
2295
2296 long servercount(void)
2297 {
2298         return count_servs()+1;
2299 }
2300
2301 long local_count()
2302 {
2303         int c = 0;
2304         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2305         {
2306                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2307         }
2308         return c;
2309 }
2310
2311
2312 void ShowMOTD(userrec *user)
2313 {
2314         if (!MOTD.size())
2315         {
2316                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2317                 return;
2318         }
2319         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
2320         for (int i = 0; i != MOTD.size(); i++)
2321         {
2322                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
2323         }
2324         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
2325 }
2326
2327 void ShowRULES(userrec *user)
2328 {
2329         if (!RULES.size())
2330         {
2331                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2332                 return;
2333         }
2334         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2335         for (int i = 0; i != RULES.size(); i++)
2336         {
2337                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2338         }
2339         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2340 }
2341
2342 /* shows the message of the day, and any other on-logon stuff */
2343 void FullConnectUser(userrec* user)
2344 {
2345         user->registered = 7;
2346         user->idle_lastmsg = time(NULL);
2347         log(DEBUG,"ConnectUser: %s",user->nick);
2348
2349         if (strcmp(Passwd(user),"") && (!user->haspassed))
2350         {
2351                 kill_link(user,"Invalid password");
2352                 return;
2353         }
2354         if (IsDenied(user))
2355         {
2356                 kill_link(user,"Unauthorised connection");
2357                 return;
2358         }
2359
2360         char match_against[MAXBUF];
2361         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2362         char* r = matches_gline(match_against);
2363         if (r)
2364         {
2365                 char reason[MAXBUF];
2366                 snprintf(reason,MAXBUF,"G-Lined: %s",r);
2367                 kill_link_silent(user,reason);
2368                 return;
2369         }
2370
2371         r = matches_kline(user->host);
2372         if (r)
2373         {
2374                 char reason[MAXBUF];
2375                 snprintf(reason,MAXBUF,"K-Lined: %s",r);
2376                 kill_link_silent(user,reason);
2377                 return;
2378         }
2379
2380         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2381         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2382         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2383         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2384         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2385         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2386         std::stringstream v;
2387         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2388         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2389         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2390         v << std::string(Network);
2391         std::string data005 = v.str();
2392         FOREACH_MOD On005Numeric(data005);
2393         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2394         // so i'd better split it :)
2395         std::stringstream out(data005);
2396         std::string token = "";
2397         std::string line5 = "";
2398         int token_counter = 0;
2399         while (!out.eof())
2400         {
2401                 out >> token;
2402                 line5 = line5 + token + " ";
2403                 token_counter++;
2404                 if ((token_counter >= 13) || (out.eof() == true))
2405                 {
2406                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2407                         line5 = "";
2408                         token_counter = 0;
2409                 }
2410         }
2411         ShowMOTD(user);
2412         FOREACH_MOD OnUserConnect(user);
2413         WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]",user->port,user->nick,user->ident,user->host,user->ip);
2414
2415         char buffer[MAXBUF];
2416         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);
2417         NetSendToAll(buffer);
2418 }
2419
2420 // handles any connects where DNS isnt done yet, times out stale dns queries on users, and lets completed queries connect.
2421 void HandlePendingConnects()
2422 {
2423         for (long i = 0; i < MAXBUF; i++)
2424         {
2425                 std::string t = pending_connects[i];
2426                 if (t != "")
2427                 {
2428                         userrec* a = Find(t);
2429                         if (a)
2430                         {
2431                                 // this user's dns is done now.
2432                                 if ((a->dns_done) && (a->registered == 3))
2433                                 {
2434                                         FullConnectUser(a); // attack! attack!....
2435                                         pending_connects[i] = "";
2436                                         return; // ...RUN AWAY! RUN AWAY!
2437                                 }
2438                                 // this users dns is NOT done, but its timed out.
2439                                 if ((time(NULL) > a->signon+dns_timeout) && (a->registered == 3))
2440                                 {
2441                                         WriteServ(a->fd,"NOTICE Auth :Failed to resolve your hostname, using your IP address instead.");
2442                                         FullConnectUser(a);
2443                                         pending_connects[i] = "";
2444                                         return;
2445                                 }
2446                         }
2447                 }
2448         }
2449 }
2450
2451 /* shows the message of the day, and any other on-logon stuff */
2452 void ConnectUser(userrec *user)
2453 {
2454         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2455         if (user->dns_done)
2456         {
2457                 FullConnectUser(user);
2458         }
2459         else
2460         {
2461                 // add them to the pending queue
2462                 for (int i = 0; i < MAXBUF; i++)
2463                 {
2464                         pending_connects[i] = std::string(user->nick);
2465                         break;
2466                 }
2467         }
2468 }
2469
2470 void handle_version(char **parameters, int pcnt, userrec *user)
2471 {
2472         char Revision[] = "$Revision$";
2473
2474         char *s1 = Revision;
2475         char *savept;
2476         char *v1 = strtok_r(s1," ",&savept);
2477         s1 = savept;
2478         char *v2 = strtok_r(s1," ",&savept);
2479         s1 = savept;
2480
2481         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2482 }
2483
2484
2485 // calls a handler function for a command
2486
2487 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2488 {
2489                 for (int i = 0; i < cmdlist.size(); i++)
2490                 {
2491                         if (!strcasecmp(cmdlist[i].command,commandname))
2492                         {
2493                                 if (cmdlist[i].handler_function)
2494                                 {
2495                                         if (pcnt>=cmdlist[i].min_params)
2496                                         {
2497                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2498                                                 {
2499                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2500                                                 }
2501                                         }
2502                                 }
2503                         }
2504                 }
2505 }
2506
2507 void DoSplitEveryone()
2508 {
2509         bool go_again = true;
2510         while (go_again)
2511         {
2512                 go_again = false;
2513                 for (int i = 0; i < 32; i++)
2514                 {
2515                         if (me[i] != NULL)
2516                         {
2517                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2518                                 {
2519                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2520                                         {
2521                                                 j->routes.clear();
2522                                                 j->CloseConnection();
2523                                                 me[i]->connectors.erase(j);
2524                                                 go_again = true;
2525                                                 break;
2526                                         }
2527                                 }
2528                         }
2529                 }
2530         }
2531         log(DEBUG,"Removed server. Will remove clients...");
2532         // iterate through the userlist and remove all users on this server.
2533         // because we're dealing with a mesh, we dont have to deal with anything
2534         // "down-route" from this server (nice huh)
2535         go_again = true;
2536         char reason[MAXBUF];
2537         while (go_again)
2538         {
2539                 go_again = false;
2540                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2541                 {
2542                         if (strcasecmp(u->second->server,ServerName))
2543                         {
2544                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2545                                 kill_link(u->second,reason);
2546                                 go_again = true;
2547                                 break;
2548                         }
2549                 }
2550         }
2551 }
2552
2553
2554
2555 char islast(const char* s)
2556 {
2557         char c = '`';
2558         for (int j = 0; j < 32; j++)
2559         {
2560                 if (me[j] != NULL)
2561                 {
2562                         for (int k = 0; k < me[j]->connectors.size(); k++)
2563                         {
2564                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2565                                 {
2566                                         c = '|';
2567                                 }
2568                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2569                                 {
2570                                         c = '`';
2571                                 }
2572                         }
2573                 }
2574         }
2575         return c;
2576 }
2577
2578 long map_count(const char* s)
2579 {
2580         int c = 0;
2581         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2582         {
2583                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2584         }
2585         return c;
2586 }
2587
2588
2589 void force_nickchange(userrec* user,const char* newnick)
2590 {
2591         char nick[MAXBUF];
2592         int MOD_RESULT = 0;
2593
2594         strcpy(nick,"");
2595
2596         FOREACH_RESULT(OnUserPreNick(user,newnick));
2597         if (MOD_RESULT) {
2598                 kill_link(user,"Nickname collision");
2599                 return;
2600         }
2601         if (matches_qline(newnick))
2602         {
2603                 kill_link(user,"Nickname collision");
2604                 return;
2605         }
2606
2607         if (user)
2608         {
2609                 if (newnick)
2610                 {
2611                         strncpy(nick,newnick,MAXBUF);
2612                 }
2613                 if (user->registered == 7)
2614                 {
2615                         char* pars[1];
2616                         pars[0] = nick;
2617                         handle_nick(pars,1,user);
2618                 }
2619         }
2620 }
2621
2622
2623 int process_parameters(char **command_p,char *parameters)
2624 {
2625         int i = 0;
2626         int j = 0;
2627         int q = 0;
2628         q = strlen(parameters);
2629         if (!q)
2630         {
2631                 /* no parameters, command_p invalid! */
2632                 return 0;
2633         }
2634         if (parameters[0] == ':')
2635         {
2636                 command_p[0] = parameters+1;
2637                 return 1;
2638         }
2639         if (q)
2640         {
2641                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2642                 {
2643                         /* only one parameter */
2644                         command_p[0] = parameters;
2645                         if (parameters[0] == ':')
2646                         {
2647                                 if (strchr(parameters,' ') != NULL)
2648                                 {
2649                                         command_p[0]++;
2650                                 }
2651                         }
2652                         return 1;
2653                 }
2654         }
2655         command_p[j++] = parameters;
2656         for (int i = 0; i <= q; i++)
2657         {
2658                 if (parameters[i] == ' ')
2659                 {
2660                         command_p[j++] = parameters+i+1;
2661                         parameters[i] = '\0';
2662                         if (command_p[j-1][0] == ':')
2663                         {
2664                                 *command_p[j-1]++; /* remove dodgy ":" */
2665                                 break;
2666                                 /* parameter like this marks end of the sequence */
2667                         }
2668                 }
2669         }
2670         return j; /* returns total number of items in the list */
2671 }
2672
2673 void process_command(userrec *user, char* cmd)
2674 {
2675         char *parameters;
2676         char *command;
2677         char *command_p[127];
2678         char p[MAXBUF], temp[MAXBUF];
2679         int i, j, items, cmd_found;
2680
2681         for (int i = 0; i < 127; i++)
2682                 command_p[i] = NULL;
2683
2684         if (!user)
2685         {
2686                 return;
2687         }
2688         if (!cmd)
2689         {
2690                 return;
2691         }
2692         if (!strcmp(cmd,""))
2693         {
2694                 return;
2695         }
2696
2697         int total_params = 0;
2698         if (strlen(cmd)>2)
2699         {
2700                 for (int q = 0; q < strlen(cmd)-1; q++)
2701                 {
2702                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2703                         {
2704                                 total_params++;
2705                                 // found a 'trailing', we dont count them after this.
2706                                 break;
2707                         }
2708                         if (cmd[q] == ' ')
2709                                 total_params++;
2710                 }
2711         }
2712
2713         // another phidjit bug...
2714         if (total_params > 126)
2715         {
2716                 //kill_link(user,"Protocol violation (1)");
2717                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2718                 return;
2719         }
2720
2721         strlcpy(temp,cmd,MAXBUF);
2722
2723         std::string tmp = cmd;
2724         for (int i = 0; i <= MODCOUNT; i++)
2725         {
2726                 std::string oldtmp = tmp;
2727                 modules[i]->OnServerRaw(tmp,true,user);
2728                 if (oldtmp != tmp)
2729                 {
2730                         log(DEBUG,"A Module changed the input string!");
2731                         log(DEBUG,"New string: %s",tmp.c_str());
2732                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2733                         break;
2734                 }
2735         }
2736         strlcpy(cmd,tmp.c_str(),MAXBUF);
2737         strlcpy(temp,cmd,MAXBUF);
2738
2739         if (!strchr(cmd,' '))
2740         {
2741                 /* no parameters, lets skip the formalities and not chop up
2742                  * the string */
2743                 log(DEBUG,"About to preprocess command with no params");
2744                 items = 0;
2745                 command_p[0] = NULL;
2746                 parameters = NULL;
2747                 for (int i = 0; i <= strlen(cmd); i++)
2748                 {
2749                         cmd[i] = toupper(cmd[i]);
2750                 }
2751                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2752                 command = cmd;
2753         }
2754         else
2755         {
2756                 strcpy(cmd,"");
2757                 j = 0;
2758                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2759                 for (int i = 0; i < strlen(temp); i++)
2760                 {
2761                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2762                         {
2763                                 cmd[j++] = temp[i];
2764                                 cmd[j] = 0;
2765                         }
2766                 }
2767                 /* split the full string into a command plus parameters */
2768                 parameters = p;
2769                 strcpy(p," ");
2770                 command = cmd;
2771                 if (strchr(cmd,' '))
2772                 {
2773                         for (int i = 0; i <= strlen(cmd); i++)
2774                         {
2775                                 /* capitalise the command ONLY, leave params intact */
2776                                 cmd[i] = toupper(cmd[i]);
2777                                 /* are we nearly there yet?! :P */
2778                                 if (cmd[i] == ' ')
2779                                 {
2780                                         command = cmd;
2781                                         parameters = cmd+i+1;
2782                                         cmd[i] = '\0';
2783                                         break;
2784                                 }
2785                         }
2786                 }
2787                 else
2788                 {
2789                         for (int i = 0; i <= strlen(cmd); i++)
2790                         {
2791                                 cmd[i] = toupper(cmd[i]);
2792                         }
2793                 }
2794
2795         }
2796         cmd_found = 0;
2797
2798         if (strlen(command)>MAXCOMMAND)
2799         {
2800                 //kill_link(user,"Protocol violation (2)");
2801                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2802                 return;
2803         }
2804
2805         for (int x = 0; x < strlen(command); x++)
2806         {
2807                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2808                 {
2809                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2810                         {
2811                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2812                                 {
2813                                         //kill_link(user,"Protocol violation (3)");
2814                                         WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2815                                         return;
2816                                 }
2817                         }
2818                 }
2819         }
2820
2821         for (int i = 0; i != cmdlist.size(); i++)
2822         {
2823                 if (strcmp(cmdlist[i].command,""))
2824                 {
2825                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2826                         {
2827                                 log(DEBUG,"Found matching command");
2828
2829                                 if (parameters)
2830                                 {
2831                                         if (strcmp(parameters,""))
2832                                         {
2833                                                 items = process_parameters(command_p,parameters);
2834                                         }
2835                                         else
2836                                         {
2837                                                 items = 0;
2838                                                 command_p[0] = NULL;
2839                                         }
2840                                 }
2841                                 else
2842                                 {
2843                                         items = 0;
2844                                         command_p[0] = NULL;
2845                                 }
2846
2847                                 if (user)
2848                                 {
2849                                         log(DEBUG,"Processing command");
2850
2851                                         /* activity resets the ping pending timer */
2852                                         user->nping = time(NULL) + 120;
2853                                         if ((items) < cmdlist[i].min_params)
2854                                         {
2855                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2856                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2857                                                 return;
2858                                         }
2859                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2860                                         {
2861                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2862                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2863                                                 cmd_found = 1;
2864                                                 return;
2865                                         }
2866                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
2867                                         {
2868                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2869                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
2870                                                 cmd_found = 1;
2871                                                 return;
2872                                         }
2873                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2874                                          * deny command! */
2875                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2876                                         {
2877                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2878                                                 {
2879                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2880                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2881                                                         return;
2882                                                 }
2883                                         }
2884                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
2885                                         {
2886                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
2887                                                 if (cmdlist[i].handler_function)
2888                                                 {
2889                                                         /* ikky /stats counters */
2890                                                         if (temp)
2891                                                         {
2892                                                                 if (user)
2893                                                                 {
2894                                                                         user->bytes_in += strlen(temp);
2895                                                                         user->cmds_in++;
2896                                                                         user->bytes_out+=strlen(temp);
2897                                                                         user->cmds_out++;
2898                                                                 }
2899                                                                 cmdlist[i].use_count++;
2900                                                                 cmdlist[i].total_bytes+=strlen(temp);
2901                                                         }
2902
2903                                                         /* WARNING: nothing may come after the
2904                                                          * command handler call, as the handler
2905                                                          * may free the user structure! */
2906
2907                                                         cmdlist[i].handler_function(command_p,items,user);
2908                                                 }
2909                                                 return;
2910                                         }
2911                                         else
2912                                         {
2913                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2914                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
2915                                                 return;
2916                                         }
2917                                 }
2918                                 cmd_found = 1;
2919                         }
2920                 }
2921         }
2922         if ((!cmd_found) && (user))
2923         {
2924                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
2925                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2926         }
2927 }
2928
2929
2930 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
2931 {
2932         command_t comm;
2933         /* create the command and push it onto the table */
2934         strlcpy(comm.command,cmd,MAXBUF);
2935         comm.handler_function = f;
2936         comm.flags_needed = flags;
2937         comm.min_params = minparams;
2938         comm.use_count = 0;
2939         comm.total_bytes = 0;
2940         cmdlist.push_back(comm);
2941         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
2942 }
2943
2944 void SetupCommandTable(void)
2945 {
2946         createcommand("USER",handle_user,0,4);
2947         createcommand("NICK",handle_nick,0,1);
2948         createcommand("QUIT",handle_quit,0,0);
2949         createcommand("VERSION",handle_version,0,0);
2950         createcommand("PING",handle_ping,0,1);
2951         createcommand("PONG",handle_pong,0,1);
2952         createcommand("ADMIN",handle_admin,0,0);
2953         createcommand("PRIVMSG",handle_privmsg,0,2);
2954         createcommand("INFO",handle_info,0,0);
2955         createcommand("TIME",handle_time,0,0);
2956         createcommand("WHOIS",handle_whois,0,1);
2957         createcommand("WALLOPS",handle_wallops,'o',1);
2958         createcommand("NOTICE",handle_notice,0,2);
2959         createcommand("JOIN",handle_join,0,1);
2960         createcommand("NAMES",handle_names,0,1);
2961         createcommand("PART",handle_part,0,1);
2962         createcommand("KICK",handle_kick,0,2);
2963         createcommand("MODE",handle_mode,0,1);
2964         createcommand("TOPIC",handle_topic,0,1);
2965         createcommand("WHO",handle_who,0,1);
2966         createcommand("MOTD",handle_motd,0,0);
2967         createcommand("RULES",handle_rules,0,0);
2968         createcommand("OPER",handle_oper,0,2);
2969         createcommand("LIST",handle_list,0,0);
2970         createcommand("DIE",handle_die,'o',1);
2971         createcommand("RESTART",handle_restart,'o',1);
2972         createcommand("KILL",handle_kill,'o',2);
2973         createcommand("REHASH",handle_rehash,'o',0);
2974         createcommand("LUSERS",handle_lusers,0,0);
2975         createcommand("STATS",handle_stats,0,1);
2976         createcommand("USERHOST",handle_userhost,0,1);
2977         createcommand("AWAY",handle_away,0,0);
2978         createcommand("ISON",handle_ison,0,0);
2979         createcommand("SUMMON",handle_summon,0,0);
2980         createcommand("USERS",handle_users,0,0);
2981         createcommand("INVITE",handle_invite,0,2);
2982         createcommand("PASS",handle_pass,0,1);
2983         createcommand("TRACE",handle_trace,'o',0);
2984         createcommand("WHOWAS",handle_whowas,0,1);
2985         createcommand("CONNECT",handle_connect,'o',1);
2986         createcommand("SQUIT",handle_squit,'o',0);
2987         createcommand("MODULES",handle_modules,'o',0);
2988         createcommand("LINKS",handle_links,0,0);
2989         createcommand("MAP",handle_map,0,0);
2990         createcommand("KLINE",handle_kline,'o',1);
2991         createcommand("GLINE",handle_gline,'o',1);
2992         createcommand("ZLINE",handle_zline,'o',1);
2993         createcommand("QLINE",handle_qline,'o',1);
2994         createcommand("SERVER",handle_server,0,0);
2995 }
2996
2997 void process_buffer(const char* cmdbuf,userrec *user)
2998 {
2999         if (!user)
3000         {
3001                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3002                 return;
3003         }
3004         char cmd[MAXBUF];
3005         int i;
3006         if (!cmdbuf)
3007         {
3008                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3009                 return;
3010         }
3011         if (!strcmp(cmdbuf,""))
3012         {
3013                 return;
3014         }
3015         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
3016
3017         strlcpy(cmd,cmdbuf,MAXBUF);
3018         if (!strcmp(cmd,""))
3019         {
3020                 return;
3021         }
3022         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3023         {
3024                 cmd[strlen(cmd)-1] = '\0';
3025         }
3026         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3027         {
3028                 cmd[strlen(cmd)-1] = '\0';
3029         }
3030
3031         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
3032         {
3033                 cmd[strlen(cmd)-1] = '\0';
3034         }
3035
3036         if (!strcmp(cmd,""))
3037         {
3038                 return;
3039         }
3040         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
3041         tidystring(cmd);
3042         if ((user) && (cmd))
3043         {
3044                 process_command(user,cmd);
3045         }
3046 }
3047
3048 void DoSync(serverrec* serv, char* tcp_host)
3049 {
3050         char data[MAXBUF];
3051         log(DEBUG,"Sending sync");
3052         // send start of sync marker: Y <timestamp>
3053         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3054         // except the ones its receiving it from.
3055         snprintf(data,MAXBUF,"Y %d",time(NULL));
3056         serv->SendPacket(data,tcp_host);
3057         // send users and channels
3058         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3059         {
3060                 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);
3061                 serv->SendPacket(data,tcp_host);
3062                 if (strchr(u->second->modes,'o'))
3063                 {
3064                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3065                         serv->SendPacket(data,tcp_host);
3066                 }
3067                 for (int i = 0; i <= MODCOUNT; i++)
3068                 {
3069                         string_list l = modules[i]->OnUserSync(u->second);
3070                         for (int j = 0; j < l.size(); j++)
3071                         {
3072                                 strlcpy(data,l[j].c_str(),MAXBUF);
3073                                 serv->SendPacket(data,tcp_host);
3074                         }
3075                 }
3076                 if (strcmp(chlist(u->second),""))
3077                 {
3078                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
3079                         serv->SendPacket(data,tcp_host);
3080                 }
3081         }
3082         // send channel modes, topics etc...
3083         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3084         {
3085                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3086                 serv->SendPacket(data,tcp_host);
3087                 for (int i = 0; i <= MODCOUNT; i++)
3088                 {
3089                         string_list l = modules[i]->OnChannelSync(c->second);
3090                         for (int j = 0; j < l.size(); j++)
3091                         {
3092                                 strlcpy(data,l[j].c_str(),MAXBUF);
3093                                 serv->SendPacket(data,tcp_host);
3094                         }
3095                 }
3096                 if (strcmp(c->second->topic,""))
3097                 {
3098                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3099                         serv->SendPacket(data,tcp_host);
3100                 }
3101                 // send current banlist
3102
3103                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3104                 {
3105                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
3106                         serv->SendPacket(data,tcp_host);
3107                 }
3108         }
3109         // sync global zlines, glines, etc
3110         sync_xlines(serv,tcp_host);
3111
3112         for (int j = 0; j < 32; j++)
3113         {
3114                 if (me[j] != NULL)
3115                 {
3116                         for (int k = 0; k < me[j]->connectors.size(); k++)
3117                         {
3118                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3119                                 {
3120                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3121                                         serv->SendPacket(data,tcp_host);
3122                                         NetSendMyRoutingTable();
3123                                 }
3124                         }
3125                 }
3126         }
3127
3128         snprintf(data,MAXBUF,"F %d",time(NULL));
3129         serv->SendPacket(data,tcp_host);
3130         log(DEBUG,"Sent sync");
3131         // ircd sends its serverlist after the end of sync here
3132 }
3133
3134
3135 void NetSendMyRoutingTable()
3136 {
3137         // send out a line saying what is reachable to us.
3138         // E.g. if A is linked to B C and D, send out:
3139         // $ A B C D
3140         // if its only linked to B and D send out:
3141         // $ A B D
3142         // if it has no links, dont even send out the line at all.
3143         char buffer[MAXBUF];
3144         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3145         bool sendit = false;
3146         for (int i = 0; i < 32; i++)
3147         {
3148                 if (me[i] != NULL)
3149                 {
3150                         for (int j = 0; j < me[i]->connectors.size(); j++)
3151                         {
3152                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3153                                 {
3154                                         strlcat(buffer," ",MAXBUF);
3155                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3156                                         sendit = true;
3157                                 }
3158                         }
3159                 }
3160         }
3161         if (sendit)
3162                 NetSendToAll(buffer);
3163 }
3164
3165
3166 void DoSplit(const char* params)
3167 {
3168         bool go_again = true;
3169         while (go_again)
3170         {
3171                 go_again = false;
3172                 for (int i = 0; i < 32; i++)
3173                 {
3174                         if (me[i] != NULL)
3175                         {
3176                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3177                                 {
3178                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3179                                         {
3180                                                 j->routes.clear();
3181                                                 j->CloseConnection();
3182                                                 me[i]->connectors.erase(j);
3183                                                 go_again = true;
3184                                                 break;
3185                                         }
3186                                 }
3187                         }
3188                 }
3189         }
3190         log(DEBUG,"Removed server. Will remove clients...");
3191         // iterate through the userlist and remove all users on this server.
3192         // because we're dealing with a mesh, we dont have to deal with anything
3193         // "down-route" from this server (nice huh)
3194         go_again = true;
3195         char reason[MAXBUF];
3196         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3197         while (go_again)
3198         {
3199                 go_again = false;
3200                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3201                 {
3202                         if (!strcasecmp(u->second->server,params))
3203                         {
3204                                 kill_link(u->second,reason);
3205                                 go_again = true;
3206                                 break;
3207                         }
3208                 }
3209         }
3210 }
3211
3212 // removes a server. Will NOT remove its users!
3213
3214 void RemoveServer(const char* name)
3215 {
3216         bool go_again = true;
3217         while (go_again)
3218         {
3219                 go_again = false;
3220                 for (int i = 0; i < 32; i++)
3221                 {
3222                         if (me[i] != NULL)
3223                         {
3224                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3225                                 {
3226                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3227                                         {
3228                                                 j->routes.clear();
3229                                                 j->CloseConnection();
3230                                                 me[i]->connectors.erase(j);
3231                                                 go_again = true;
3232                                                 break;
3233                                         }
3234                                 }
3235                         }
3236                 }
3237         }
3238 }
3239
3240
3241 int reap_counter = 0;
3242
3243 int InspIRCd(void)
3244 {
3245         struct sockaddr_in client,server;
3246         char addrs[MAXBUF][255];
3247         int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
3248         socklen_t length;
3249         int count = 0;
3250         int selectResult = 0, selectResult2 = 0;
3251         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3252         char resolvedHost[MAXBUF];
3253         fd_set selectFds;
3254         struct timeval tv;
3255
3256         log_file = fopen("ircd.log","a+");
3257         if (!log_file)
3258         {
3259                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3260                 Exit(ERROR);
3261         }
3262
3263         log(DEBUG,"InspIRCd: startup: begin");
3264         log(DEBUG,"$Id$");
3265         if (geteuid() == 0)
3266         {
3267                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3268                 Exit(ERROR);
3269                 log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
3270         }
3271         SetupCommandTable();
3272         log(DEBUG,"InspIRCd: startup: default command table set up");
3273
3274         ReadConfig(true,NULL);
3275         if (strcmp(DieValue,""))
3276         {
3277                 printf("WARNING: %s\n\n",DieValue);
3278                 exit(0);
3279         }
3280         log(DEBUG,"InspIRCd: startup: read config");
3281
3282         int count2 = 0, count3 = 0;
3283
3284         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3285         {
3286                 ConfValue("bind","port",count,configToken,&config_f);
3287                 ConfValue("bind","address",count,Addr,&config_f);
3288                 ConfValue("bind","type",count,Type,&config_f);
3289                 if (!strcmp(Type,"servers"))
3290                 {
3291                         char Default[MAXBUF];
3292                         strcpy(Default,"no");
3293                         ConfValue("bind","default",count,Default,&config_f);
3294                         if (strchr(Default,'y'))
3295                         {
3296                                 defaultRoute = count3;
3297                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3298                         }
3299                         me[count3] = new serverrec(ServerName,100L,false);
3300                         if (!me[count3]->CreateListener(Addr,atoi(configToken)))
3301                         {
3302                                 log(DEFAULT,"Error! Failed to bind port %d",atoi(configToken));
3303                         }
3304                         else
3305                         {
3306                                 count3++;
3307                         }
3308                 }
3309                 else
3310                 {
3311                         ports[count2] = atoi(configToken);
3312                         strlcpy(addrs[count2],Addr,256);
3313                         count2++;
3314                 }
3315                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3316         }
3317         portCount = count2;
3318         UDPportCount = count3;
3319
3320         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3321
3322         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3323
3324         printf("\n");
3325
3326         /* BugFix By Craig! :p */
3327         count = 0;
3328         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3329         {
3330                 char modfile[MAXBUF];
3331                 ConfValue("module","name",count2,configToken,&config_f);
3332                 snprintf(modfile,MAXBUF,"%s/%s",MOD_PATH,configToken,&config_f);
3333                 printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
3334                 log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
3335                 /* If The File Doesnt exist, Trying to load it
3336                  * Will Segfault the IRCd.. So, check to see if
3337                  * it Exists, Before Proceeding. */
3338                 if (FileExists(modfile))
3339                 {
3340                         factory[count] = new ircd_module(modfile);
3341                         if (factory[count]->LastError())
3342                         {
3343                                 log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
3344                                 printf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
3345                                 Exit(ERROR);
3346                         }
3347                         if (factory[count]->factory)
3348                         {
3349                                 modules[count] = factory[count]->factory->CreateModule();
3350                                 /* save the module and the module's classfactory, if
3351                                  * this isnt done, random crashes can occur :/ */
3352                                 module_names.push_back(modfile);
3353                         }
3354                         else
3355                         {
3356                                 log(DEBUG,"Unable to load %s",modfile);
3357                                 printf("Unable to load %s\nExiting...\n",modfile);
3358                                 Exit(ERROR);
3359                         }
3360                         /* Increase the Count */
3361                         count++;
3362                 }
3363                 else
3364                 {
3365                         log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
3366                         printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
3367                 }
3368         }
3369         MODCOUNT = count - 1;
3370         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3371
3372         printf("\nInspIRCd is now running!\n");
3373
3374         startup_time = time(NULL);
3375
3376         if (nofork)
3377         {
3378                 log(VERBOSE,"Not forking as -nofork was specified");
3379         }
3380         else
3381         {
3382                 if (DaemonSeed() == ERROR)
3383                 {
3384                         log(DEBUG,"InspIRCd: startup: can't daemonise");
3385                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3386                         Exit(ERROR);
3387                 }
3388         }
3389
3390
3391         /* setup select call */
3392         FD_ZERO(&selectFds);
3393         log(DEBUG,"InspIRCd: startup: zero selects");
3394         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3395
3396         for (count = 0; count < portCount; count++)
3397         {
3398                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3399                 {
3400                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3401                         return(ERROR);
3402                 }
3403                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3404                 {
3405                         log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
3406                 }
3407                 else    /* well we at least bound to one socket so we'll continue */
3408                 {
3409                         boundPortCount++;
3410                 }
3411         }
3412
3413         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3414
3415         /* if we didn't bind to anything then abort */
3416         if (boundPortCount == 0)
3417         {
3418                 log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
3419                 return (ERROR);
3420         }
3421
3422
3423         length = sizeof (client);
3424         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3425
3426         /* main loop, this never returns */
3427         for (;;)
3428         {
3429 #ifdef _POSIX_PRIORITY_SCHEDULING
3430                 sched_yield();
3431 #endif
3432                 // update the status of klines, etc
3433                 expire_lines();
3434
3435                 fd_set sfd;
3436                 timeval tval;
3437                 FD_ZERO(&sfd);
3438
3439                 // poll dns queue
3440                 dns_poll();
3441
3442                 // handle pending connects
3443                 HandlePendingConnects();
3444
3445                 user_hash::iterator count2 = clientlist.begin();
3446
3447                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3448                 // them in a list, then reap the list every second or so.
3449                 if (reap_counter>300)
3450                 {
3451                         if (fd_reap.size() > 0)
3452                         {
3453                                 for( int n = 0; n < fd_reap.size(); n++)
3454                                 {
3455                                         //Blocking(fd_reap[n]);
3456                                         close(fd_reap[n]);
3457                                         shutdown (fd_reap[n],2);
3458                                         //NonBlocking(fd_reap[n]);
3459                                 }
3460                         }
3461                         fd_reap.clear();
3462                         reap_counter=0;
3463                 }
3464                 reap_counter++;
3465
3466                 fd_set serverfds;
3467                 FD_ZERO(&serverfds);
3468                 timeval tvs;
3469
3470                 for (int x = 0; x != UDPportCount; x++)
3471                 {
3472                         if (me[x])
3473                                 FD_SET(me[x]->fd, &serverfds);
3474                 }
3475
3476                 tvs.tv_usec = 0;
3477                 tvs.tv_sec = 0;
3478
3479                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3480                 if (servresult > 0)
3481                 {
3482                         for (int x = 0; x != UDPportCount; x++)
3483                         {
3484                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3485                                 {
3486                                         char remotehost[MAXBUF],resolved[MAXBUF];
3487                                         length = sizeof (client);
3488                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3489                                         strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3490                                         if(CleanAndResolve(resolved, remotehost) != TRUE)
3491                                         {
3492                                                 strlcpy(resolved,remotehost,MAXBUF);
3493                                         }
3494                                         // add to this connections ircd_connector vector
3495                                         // *FIX* - we need the LOCAL port not the remote port in &client!
3496                                         me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3497                                 }
3498                         }
3499                 }
3500
3501                 for (int x = 0; x < UDPportCount; x++)
3502                 {
3503                         std::deque<std::string> msgs;
3504                         msgs.clear();
3505                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3506                         {
3507                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3508                                 {
3509                                         char udp_msg[MAXBUF];
3510                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3511                                         if (strlen(udp_msg)<1)
3512                                         {
3513                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3514                                                 break;
3515                                         }
3516                                         // during a netburst, send all data to all other linked servers
3517                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3518                                         {
3519                                                 if (is_uline(tcp_host))
3520                                                 {
3521                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3522                                                         {
3523                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3524                                                         }
3525                                                 }
3526                                                 else
3527                                                         NetSendToAllExcept(tcp_host,udp_msg);
3528                                         }
3529                                         FOREACH_MOD OnPacketReceive(udp_msg);
3530                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3531                                 }
3532                                 goto label;
3533                         }
3534                 }
3535
3536
3537         while (count2 != clientlist.end())
3538         {
3539                 char data[10240];
3540                 tval.tv_usec = tval.tv_sec = 0;
3541                 FD_ZERO(&sfd);
3542                 int total_in_this_set = 0;
3543
3544                 user_hash::iterator xcount = count2;
3545                 user_hash::iterator endingiter = count2;
3546
3547                 if (!count2->second) break;
3548
3549                 if (count2->second)
3550                 if (count2->second->fd != 0)
3551                 {
3552                         // assemble up to 64 sockets into an fd_set
3553                         // to implement a pooling mechanism.
3554                         //
3555                         // This should be up to 64x faster than the
3556                         // old implementation.
3557                         while (total_in_this_set < 64)
3558                         {
3559                                 if (count2 != clientlist.end())
3560                                 {
3561                                         // we don't check the state of remote users.
3562                                         if (count2->second->fd > 0)
3563                                         {
3564                                                 FD_SET (count2->second->fd, &sfd);
3565
3566                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3567                                                 // their connection class.
3568                                                 if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
3569                                                 {
3570                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3571                                                         kill_link(count2->second,"Registration timeout");
3572                                                         goto label;
3573                                                 }
3574                                                 if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3575                                                 {
3576                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3577                                                         {
3578                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3579                                                                 kill_link(count2->second,"Ping timeout");
3580                                                                 goto label;
3581                                                         }
3582                                                         Write(count2->second->fd,"PING :%s",ServerName);
3583                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3584                                                         count2->second->lastping = 0;
3585                                                         count2->second->nping = time(NULL)+120;
3586                                                 }
3587                                         }
3588                                         count2++;
3589                                         total_in_this_set++;
3590                                 }
3591                                 else break;
3592                         }
3593
3594                         endingiter = count2;
3595                         count2 = xcount; // roll back to where we were
3596
3597                         int v = 0;
3598
3599                         tval.tv_usec = 0;
3600                         tval.tv_sec = 0;
3601                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3602
3603                         // now loop through all of the items in this pool if any are waiting
3604                         //if (selectResult2 > 0)
3605                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3606                         {
3607
3608 #ifdef _POSIX_PRIORITY_SCHEDULING
3609                                 sched_yield();
3610 #endif
3611
3612                                 result = EAGAIN;
3613                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3614                                 {
3615                                         log(DEBUG,"Reading fd %d",count2a->second->fd);
3616                                         memset(data, 0, 10240);
3617                                         result = read(count2a->second->fd, data, 10240);
3618
3619                                         if (result)
3620                                         {
3621                                                 if (result > 0)
3622                                                         log(DEBUG,"Read %d characters from socket",result);
3623                                                 userrec* current = count2a->second;
3624                                                 int currfd = current->fd;
3625                                                 char* l = strtok(data,"\n");
3626                                                 int floodlines = 0;
3627                                                 while (l)
3628                                                 {
3629                                                         floodlines++;
3630                                                         if ((floodlines > current->flood) && (current->flood != 0))
3631                                                         {
3632                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3633                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3634                                                                 kill_link(current,"Excess flood");
3635                                                                 goto label;
3636                                                         }
3637                                                         char sanitized[NetBufferSize];
3638                                                         memset(sanitized, 0, NetBufferSize);
3639                                                         int ptt = 0;
3640                                                         for (int pt = 0; pt < strlen(l); pt++)
3641                                                         {
3642                                                                 if (l[pt] != '\r')
3643                                                                 {
3644                                                                         sanitized[ptt++] = l[pt];
3645                                                                 }
3646                                                         }
3647                                                         sanitized[ptt] = '\0';
3648                                                         if (strlen(sanitized))
3649                                                         {
3650
3651
3652                                                                 // we're gonna re-scan to check if the nick is gone, after every
3653                                                                 // command - if it has, we're gonna bail
3654                                                                 bool find_again = false;
3655                                                                 process_buffer(sanitized,current);
3656
3657                                                                 // look for the user's record in case it's changed
3658                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3659                                                                 {
3660                                                                         if (c2->second->fd == currfd)
3661                                                                         {
3662                                                                                 // found again, update pointer
3663                                                                                 current == c2->second;
3664                                                                                 find_again = true;
3665                                                                                 break;
3666                                                                         }
3667                                                                 }
3668                                                                 if (!find_again)
3669                                                                         goto label;
3670
3671                                                         }
3672                                                         l = strtok(NULL,"\n");
3673                                                 }
3674                                                 goto label;
3675                                         }
3676
3677                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
3678                                         {
3679                                                 log(DEBUG,"killing: %s",count2a->second->nick);
3680                                                 kill_link(count2a->second,strerror(errno));
3681                                                 goto label;
3682                                         }
3683                                 }
3684                                 // result EAGAIN means nothing read
3685                                 if (result == EAGAIN)
3686                                 {
3687                                 }
3688                                 else
3689                                 if (result == 0)
3690                                 {
3691                                         if (count2->second)
3692                                         {
3693                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
3694                                                 kill_link(count2a->second,"Client exited");
3695                                                 // must bail here? kill_link removes the hash, corrupting the iterator
3696                                                 log(DEBUG,"Bailing from client exit");
3697                                                 goto label;
3698                                         }
3699                                 }
3700                                 else if (result > 0)
3701                                 {
3702                                 }
3703                         }
3704                 }
3705                 for (int q = 0; q < total_in_this_set; q++)
3706                 {
3707                         // there is no iterator += operator :(
3708                         //if (count2 != clientlist.end())
3709                         //{
3710                                 count2++;
3711                         //}
3712                 }
3713         }
3714
3715         // set up select call
3716         for (count = 0; count < boundPortCount; count++)
3717         {
3718                 FD_SET (openSockfd[count], &selectFds);
3719         }
3720
3721         tv.tv_usec = 1;
3722         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
3723
3724         /* select is reporting a waiting socket. Poll them all to find out which */
3725         if (selectResult > 0)
3726         {
3727                 char target[MAXBUF], resolved[MAXBUF];
3728                 for (count = 0; count < boundPortCount; count++)
3729                 {
3730                         if (FD_ISSET (openSockfd[count], &selectFds))
3731                         {
3732                                 length = sizeof (client);
3733                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
3734
3735                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
3736                                 strlcpy (resolved, target, MAXBUF);
3737
3738                                 if (incomingSockfd < 0)
3739                                 {
3740                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
3741                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
3742                                 }
3743                                 else
3744                                 {
3745                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
3746                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
3747                                 }
3748                                 goto label;
3749                         }
3750                 }
3751         }
3752         label:
3753         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
3754 }
3755 /* not reached */
3756 close (incomingSockfd);
3757 }
3758