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
  60 #ifdef GCC3
  61 #define nspace __gnu_cxx
  62 #else
  63 #define nspace std
  64 #endif
  65
  66 int LogLevel = DEFAULT;
  67 char ServerName[MAXBUF];
  68 char Network[MAXBUF];
  69 char ServerDesc[MAXBUF];
  70 char AdminName[MAXBUF];
  71 char AdminEmail[MAXBUF];
  72 char AdminNick[MAXBUF];
  73 char diepass[MAXBUF];
  74 char restartpass[MAXBUF];
  75 char motd[MAXBUF];
  76 char rules[MAXBUF];
  77 char list[MAXBUF];
  78 char PrefixQuit[MAXBUF];
  79 char DieValue[MAXBUF];
  80 int debugging =  0;
  81 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  82 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  83 int DieDelay  =  5;
  84 time_t startup_time = time(NULL);
  85 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  86 extern int MaxWhoResults;
  87 time_t nb_start = 0;
  88
  89 bool AllowHalfop = true;
  90 bool AllowProtect = true;
  91 bool AllowFounder = true;
  92
  93 extern std::vector<Module*> modules;
  94 std::vector<std::string> module_names;
  95 extern std::vector<ircd_module*> factory;
  96 std::vector<int> fd_reap;
  97
  98 extern int MODCOUNT;
  99
 100 bool nofork = false;
 101
 102 namespace nspace
 103 {
 104 #ifdef GCC34
 105         template<> struct hash<in_addr>
 106 #else
 107         template<> struct nspace::hash<in_addr>
 108 #endif
 109         {
 110                 size_t operator()(const struct in_addr &a) const
 111                 {
 112                         size_t q;
 113                         memcpy(&q,&a,sizeof(size_t));
 114                         return q;
 115                 }
 116         };
 117 #ifdef GCC34
 118         template<> struct hash<string>
 119 #else
 120         template<> struct nspace::hash<string>
 121 #endif
 122         {
 123                 size_t operator()(const string &s) const
 124                 {
 125                         char a[MAXBUF];
 126                         static struct hash<const char *> strhash;
 127                         strlcpy(a,s.c_str(),MAXBUF);
 128                         strlower(a);
 129                         return strhash(a);
 130                 }
 131         };
 132 }
 133
 134
 135 struct StrHashComp
 136 {
 137
 138         bool operator()(const string& s1, const string& s2) const
 139         {
 140                 char a[MAXBUF],b[MAXBUF];
 141                 strlcpy(a,s1.c_str(),MAXBUF);
 142                 strlcpy(b,s2.c_str(),MAXBUF);
 143                 return (strcasecmp(a,b) == 0);
 144         }
 145
 146 };
 147
 148 struct InAddr_HashComp
 149 {
 150
 151         bool operator()(const in_addr &s1, const in_addr &s2) const
 152         {
 153                 size_t q;
 154                 size_t p;
 155
 156                 memcpy(&q,&s1,sizeof(size_t));
 157                 memcpy(&p,&s2,sizeof(size_t));
 158
 159                 return (q == p);
 160         }
 161
 162 };
 163
 164
 165 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 166 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 167 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 168 typedef std::deque<command_t> command_table;
 169
 170 serverrec* me[32];
 171
 172 FILE *log_file;
 173
 174 user_hash clientlist;
 175 chan_hash chanlist;
 176 user_hash whowas;
 177 command_table cmdlist;
 178 file_cache MOTD;
 179 file_cache RULES;
 180 address_cache IP;
 181
 182 ClassVector Classes;
 183
 184 struct linger linger = { 0 };
 185 char MyExecutable[1024];
 186 int boundPortCount = 0;
 187 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 188 int defaultRoute = 0;
 189
 190 connection C;
 191
 192 long MyKey = C.GenKey();
 193
 194 /* prototypes */
 195
 196 int has_channel(userrec *u, chanrec *c);
 197 int usercount(chanrec *c);
 198 int usercount_i(chanrec *c);
 199 void update_stats_l(int fd,int data_out);
 200 char* Passwd(userrec *user);
 201 bool IsDenied(userrec *user);
 202 void AddWhoWas(userrec* u);
 203
 204 std::vector<long> auth_cookies;
 205 std::stringstream config_f(stringstream::in | stringstream::out);
 206
 207
 208
 209 long GetRevision()
 210 {
 211         char Revision[] = "$Revision$";
 212         char *s1 = Revision;
 213         char *savept;
 214         char *v1 = strtok_r(s1," ",&savept);
 215         s1 = savept;
 216         char *v2 = strtok_r(s1," ",&savept);
 217         s1 = savept;
 218         return (long)(atof(v2)*10000);
 219 }
 220
 221
 222 std::string getservername()
 223 {
 224         return ServerName;
 225 }
 226
 227 std::string getserverdesc()
 228 {
 229         return ServerDesc;
 230 }
 231
 232 std::string getnetworkname()
 233 {
 234         return Network;
 235 }
 236
 237 std::string getadminname()
 238 {
 239         return AdminName;
 240 }
 241
 242 std::string getadminemail()
 243 {
 244         return AdminEmail;
 245 }
 246
 247 std::string getadminnick()
 248 {
 249         return AdminNick;
 250 }
 251
 252 void log(int level,char *text, ...)
 253 {
 254         char textbuffer[MAXBUF];
 255         va_list argsPtr;
 256         time_t rawtime;
 257         struct tm * timeinfo;
 258         if (level < LogLevel)
 259                 return;
 260
 261         time(&rawtime);
 262         timeinfo = localtime (&rawtime);
 263
 264         if (log_file)
 265         {
 266                 char b[MAXBUF];
 267                 va_start (argsPtr, text);
 268                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 269                 va_end(argsPtr);
 270                 strlcpy(b,asctime(timeinfo),MAXBUF);
 271                 b[strlen(b)-1] = ':';
 272                 fprintf(log_file,"%s %s\n",b,textbuffer);
 273                 if (nofork)
 274                 {
 275                         // nofork enabled? display it on terminal too
 276                         printf("%s %s\n",b,textbuffer);
 277                 }
 278         }
 279 }
 280
 281 void readfile(file_cache &F, const char* fname)
 282 {
 283         FILE* file;
 284         char linebuf[MAXBUF];
 285
 286         log(DEBUG,"readfile: loading %s",fname);
 287         F.clear();
 288         file =  fopen(fname,"r");
 289         if (file)
 290         {
 291                 while (!feof(file))
 292                 {
 293                         fgets(linebuf,sizeof(linebuf),file);
 294                         linebuf[strlen(linebuf)-1]='\0';
 295                         if (!strcmp(linebuf,""))
 296                         {
 297                                 strcpy(linebuf,"  ");
 298                         }
 299                         if (!feof(file))
 300                         {
 301                                 F.push_back(linebuf);
 302                         }
 303                 }
 304                 fclose(file);
 305         }
 306         else
 307         {
 308                 log(DEBUG,"readfile: failed to load file: %s",fname);
 309         }
 310         log(DEBUG,"readfile: loaded %s, %d lines",fname,F.size());
 311 }
 312
 313 void ReadConfig(bool bail, userrec* user)
 314 {
 315         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 316         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF];
 317         ConnectClass c;
 318         std::stringstream errstr;
 319
 320         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 321         {
 322                 errstr.seekg(0);
 323                 if (bail)
 324                 {
 325                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 326                         exit(0);
 327                 }
 328                 else
 329                 {
 330                         char dataline[1024];
 331                         if (user)
 332                         {
 333                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 334                                 while (!errstr.eof())
 335                                 {
 336                                         errstr.getline(dataline,1024);
 337                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 338                                 }
 339                         }
 340                         else
 341                         {
 342                                 WriteOpers("There were errors in the configuration file:",user->nick);
 343                                 while (!errstr.eof())
 344                                 {
 345                                         errstr.getline(dataline,1024);
 346                                         WriteOpers(dataline);
 347                                 }
 348                         }
 349                         return;
 350                 }
 351         }
 352
 353         ConfValue("server","name",0,ServerName,&config_f);
 354         ConfValue("server","description",0,ServerDesc,&config_f);
 355         ConfValue("server","network",0,Network,&config_f);
 356         ConfValue("admin","name",0,AdminName,&config_f);
 357         ConfValue("admin","email",0,AdminEmail,&config_f);
 358         ConfValue("admin","nick",0,AdminNick,&config_f);
 359         ConfValue("files","motd",0,motd,&config_f);
 360         ConfValue("files","rules",0,rules,&config_f);
 361         ConfValue("power","diepass",0,diepass,&config_f);
 362         ConfValue("power","pause",0,pauseval,&config_f);
 363         ConfValue("power","restartpass",0,restartpass,&config_f);
 364         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 365         ConfValue("die","value",0,DieValue,&config_f);
 366         ConfValue("options","loglevel",0,dbg,&config_f);
 367         ConfValue("options","netbuffersize",0,NB,&config_f);
 368         ConfValue("options","maxwho",0,MW,&config_f);
 369         ConfValue("options","allowhalfop",0,AH,&config_f);
 370         ConfValue("options","allowprotect",0,AP,&config_f);
 371         ConfValue("options","allowfounder",0,AF,&config_f);
 372         NetBufferSize = atoi(NB);
 373         MaxWhoResults = atoi(MW);
 374         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 375         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 376         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 377         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 378         {
 379                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 380                 NetBufferSize = 10240;
 381         }
 382         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 383         {
 384                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 385                 MaxWhoResults = 128;
 386         }
 387         if (!strcmp(dbg,"debug"))
 388                 LogLevel = DEBUG;
 389         if (!strcmp(dbg,"verbose"))
 390                 LogLevel = VERBOSE;
 391         if (!strcmp(dbg,"default"))
 392                 LogLevel = DEFAULT;
 393         if (!strcmp(dbg,"sparse"))
 394                 LogLevel = SPARSE;
 395         if (!strcmp(dbg,"none"))
 396                 LogLevel = NONE;
 397         readfile(MOTD,motd);
 398         log(DEFAULT,"Reading message of the day...");
 399         readfile(RULES,rules);
 400         log(DEFAULT,"Reading connect classes...");
 401         Classes.clear();
 402         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 403         {
 404                 strcpy(Value,"");
 405                 ConfValue("connect","allow",i,Value,&config_f);
 406                 ConfValue("connect","timeout",i,timeout,&config_f);
 407                 ConfValue("connect","flood",i,flood,&config_f);
 408                 if (strcmp(Value,""))
 409                 {
 410                         strlcpy(c.host,Value,MAXBUF);
 411                         c.type = CC_ALLOW;
 412                         strlcpy(Value,"",MAXBUF);
 413                         ConfValue("connect","password",i,Value,&config_f);
 414                         strlcpy(c.pass,Value,MAXBUF);
 415                         c.registration_timeout = 90; // default is 2 minutes
 416                         c.flood = atoi(flood);
 417                         if (atoi(timeout)>0)
 418                         {
 419                                 c.registration_timeout = atoi(timeout);
 420                         }
 421                         Classes.push_back(c);
 422                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood);
 423                 }
 424                 else
 425                 {
 426                         ConfValue("connect","deny",i,Value,&config_f);
 427                         strlcpy(c.host,Value,MAXBUF);
 428                         c.type = CC_DENY;
 429                         Classes.push_back(c);
 430                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 431                 }
 432
 433         }
 434         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 435         read_xline_defaults();
 436         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 437         apply_lines();
 438         log(DEFAULT,"Done reading configuration file, InspIRCd is now running.");
 439 }
 440
 441 /* write formatted text to a socket, in same format as printf */
 442
 443 void Write(int sock,char *text, ...)
 444 {
 445         if (!text)
 446         {
 447                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 448                 return;
 449         }
 450         char textbuffer[MAXBUF];
 451         va_list argsPtr;
 452         char tb[MAXBUF];
 453
 454         va_start (argsPtr, text);
 455         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 456         va_end(argsPtr);
 457         snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 458         chop(tb);
 459         if (sock != -1)
 460         {
 461                 write(sock,tb,strlen(tb));
 462                 update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 463         }
 464 }
 465
 466 /* write a server formatted numeric response to a single socket */
 467
 468 void WriteServ(int sock, char* text, ...)
 469 {
 470         if (!text)
 471         {
 472                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 473                 return;
 474         }
 475         char textbuffer[MAXBUF],tb[MAXBUF];
 476         va_list argsPtr;
 477         va_start (argsPtr, text);
 478
 479         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 480         va_end(argsPtr);
 481         snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 482         chop(tb);
 483         if (sock != -1)
 484         {
 485                 write(sock,tb,strlen(tb));
 486                 update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 487         }
 488 }
 489
 490 /* write text from an originating user to originating user */
 491
 492 void WriteFrom(int sock, userrec *user,char* text, ...)
 493 {
 494         if ((!text) || (!user))
 495         {
 496                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 497                 return;
 498         }
 499         char textbuffer[MAXBUF],tb[MAXBUF];
 500         va_list argsPtr;
 501         va_start (argsPtr, text);
 502
 503         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 504         va_end(argsPtr);
 505         snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 506         chop(tb);
 507         if (sock != -1)
 508         {
 509                 write(sock,tb,strlen(tb));
 510                 update_stats_l(sock,strlen(tb)); /* add one line-out to stats L for this fd */
 511         }
 512 }
 513
 514 /* write text to an destination user from a source user (e.g. user privmsg) */
 515
 516 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 517 {
 518         if ((!dest) || (!data))
 519         {
 520                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 521                 return;
 522         }
 523         char textbuffer[MAXBUF],tb[MAXBUF];
 524         va_list argsPtr;
 525         va_start (argsPtr, data);
 526         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 527         va_end(argsPtr);
 528         chop(tb);
 529
 530         // if no source given send it from the server.
 531         if (!source)
 532         {
 533                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 534         }
 535         else
 536         {
 537                 WriteFrom(dest->fd,source,"%s",textbuffer);
 538         }
 539 }
 540
 541 /* write formatted text from a source user to all users on a channel
 542  * including the sender (NOT for privmsg, notice etc!) */
 543
 544 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 545 {
 546         if ((!Ptr) || (!user) || (!text))
 547         {
 548                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 549                 return;
 550         }
 551         char textbuffer[MAXBUF];
 552         va_list argsPtr;
 553         va_start (argsPtr, text);
 554         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 555         va_end(argsPtr);
 556         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 557         {
 558                 if (has_channel(i->second,Ptr))
 559                 {
 560                         WriteTo(user,i->second,"%s",textbuffer);
 561                 }
 562         }
 563 }
 564
 565 /* write formatted text from a source user to all users on a channel
 566  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 567  * users on remote servers */
 568
 569 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 570 {
 571         if ((!Ptr) || (!text))
 572         {
 573                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 574                 return;
 575         }
 576         char textbuffer[MAXBUF];
 577         va_list argsPtr;
 578         va_start (argsPtr, text);
 579         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 580         va_end(argsPtr);
 581         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 582         {
 583                 if (has_channel(i->second,Ptr))
 584                 {
 585                         if (i->second->fd != -1)
 586                         {
 587                                 if (!user)
 588                                 {
 589                                         WriteServ(i->second->fd,"%s",textbuffer);
 590                                 }
 591                                 else
 592                                 {
 593                                         WriteTo(user,i->second,"%s",textbuffer);
 594                                 }
 595                         }
 596                 }
 597         }
 598 }
 599
 600
 601 void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
 602 {
 603         if ((!Ptr) || (!user) || (!text))
 604         {
 605                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 606                 return;
 607         }
 608         char textbuffer[MAXBUF];
 609         va_list argsPtr;
 610         va_start (argsPtr, text);
 611         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 612         va_end(argsPtr);
 613         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 614         {
 615                 if (i->second)
 616                 {
 617                         if (has_channel(i->second,Ptr))
 618                         {
 619                                 WriteServ(i->second->fd,"%s",textbuffer);
 620                         }
 621                 }
 622         }
 623 }
 624
 625
 626 /* write formatted text from a source user to all users on a channel except
 627  * for the sender (for privmsg etc) */
 628
 629 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 630 {
 631         if ((!Ptr) || (!user) || (!text))
 632         {
 633                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 634                 return;
 635         }
 636         char textbuffer[MAXBUF];
 637         va_list argsPtr;
 638         va_start (argsPtr, text);
 639         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 640         va_end(argsPtr);
 641
 642         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 643         {
 644                 if (i->second)
 645                 {
 646                         if (has_channel(i->second,Ptr) && (user != i->second))
 647                         {
 648                                 WriteTo(user,i->second,"%s",textbuffer);
 649                         }
 650                 }
 651         }
 652 }
 653
 654
 655 std::string GetServerDescription(char* servername)
 656 {
 657         for (int j = 0; j < 32; j++)
 658         {
 659                 if (me[j] != NULL)
 660                 {
 661                         for (int k = 0; k < me[j]->connectors.size(); k++)
 662                         {
 663                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 664                                 {
 665                                         return me[j]->connectors[k].GetDescription();
 666                                 }
 667                         }
 668                 }
 669                 return ServerDesc; // not a remote server that can be found, it must be me.
 670         }
 671 }
 672
 673
 674 /* write a formatted string to all users who share at least one common
 675  * channel, including the source user e.g. for use in NICK */
 676
 677 void WriteCommon(userrec *u, char* text, ...)
 678 {
 679         if (!u)
 680         {
 681                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 682                 return;
 683         }
 684
 685         if (u->registered != 7) {
 686                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 687                 return;
 688         }
 689
 690         char textbuffer[MAXBUF];
 691         va_list argsPtr;
 692         va_start (argsPtr, text);
 693         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 694         va_end(argsPtr);
 695
 696         WriteFrom(u->fd,u,"%s",textbuffer);
 697
 698         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 699         {
 700                 if (i->second)
 701                 {
 702                         if (common_channels(u,i->second) && (i->second != u))
 703                         {
 704                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 705                         }
 706                 }
 707         }
 708 }
 709
 710 /* write a formatted string to all users who share at least one common
 711  * channel, NOT including the source user e.g. for use in QUIT */
 712
 713 void WriteCommonExcept(userrec *u, char* text, ...)
 714 {
 715         if (!u)
 716         {
 717                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 718                 return;
 719         }
 720
 721         if (u->registered != 7) {
 722                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 723                 return;
 724         }
 725
 726         char textbuffer[MAXBUF];
 727         va_list argsPtr;
 728         va_start (argsPtr, text);
 729         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 730         va_end(argsPtr);
 731
 732         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 733         {
 734                 if (i->second)
 735                 {
 736                         if ((common_channels(u,i->second)) && (u != i->second))
 737                         {
 738                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 739                         }
 740                 }
 741         }
 742 }
 743
 744 void WriteOpers(char* text, ...)
 745 {
 746         if (!text)
 747         {
 748                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 749                 return;
 750         }
 751
 752         char textbuffer[MAXBUF];
 753         va_list argsPtr;
 754         va_start (argsPtr, text);
 755         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 756         va_end(argsPtr);
 757
 758         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 759         {
 760                 if (i->second)
 761                 {
 762                         if (strchr(i->second->modes,'o'))
 763                         {
 764                                 if (strchr(i->second->modes,'s'))
 765                                 {
 766                                         // send server notices to all with +s
 767                                         // (TODO: needs SNOMASKs)
 768                                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 769                                 }
 770                         }
 771                 }
 772         }
 773 }
 774
 775 // returns TRUE of any users on channel C occupy server 'servername'.
 776
 777 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 778 {
 779         log(DEBUG,"ChanAnyOnThisServer");
 780         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 781         {
 782                 if (has_channel(i->second,c))
 783                 {
 784                         if (!strcasecmp(i->second->server,servername))
 785                         {
 786                                 return true;
 787                         }
 788                 }
 789         }
 790         return false;
 791 }
 792
 793 // returns true if user 'u' shares any common channels with any users on server 'servername'
 794
 795 bool CommonOnThisServer(userrec* u,const char* servername)
 796 {
 797         log(DEBUG,"ChanAnyOnThisServer");
 798         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 799         {
 800                 if ((common_channels(u,i->second)) && (u != i->second))
 801                 {
 802                         if (!strcasecmp(i->second->server,servername))
 803                         {
 804                                 log(DEBUG,"%s is common to %s sharing with %s",i->second->nick,servername,u->nick);
 805                                 return true;
 806                         }
 807                 }
 808         }
 809         return false;
 810 }
 811
 812
 813 void NetSendToCommon(userrec* u, char* s)
 814 {
 815         char buffer[MAXBUF];
 816         snprintf(buffer,MAXBUF,"%s",s);
 817
 818         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 819
 820         for (int j = 0; j < 32; j++)
 821         {
 822                 if (me[j] != NULL)
 823                 {
 824                         for (int k = 0; k < me[j]->connectors.size(); k++)
 825                         {
 826                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 827                                 {
 828                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 829                                 }
 830                         }
 831                 }
 832         }
 833 }
 834
 835
 836 void NetSendToAll(char* s)
 837 {
 838         char buffer[MAXBUF];
 839         snprintf(buffer,MAXBUF,"%s",s);
 840
 841         log(DEBUG,"NetSendToAll: '%s'",s);
 842
 843         for (int j = 0; j < 32; j++)
 844         {
 845                 if (me[j] != NULL)
 846                 {
 847                         for (int k = 0; k < me[j]->connectors.size(); k++)
 848                         {
 849                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 850                         }
 851                 }
 852         }
 853 }
 854
 855 void NetSendToAllAlive(char* s)
 856 {
 857         char buffer[MAXBUF];
 858         snprintf(buffer,MAXBUF,"%s",s);
 859
 860         log(DEBUG,"NetSendToAllAlive: '%s'",s);
 861
 862         for (int j = 0; j < 32; j++)
 863         {
 864                 if (me[j] != NULL)
 865                 {
 866                         for (int k = 0; k < me[j]->connectors.size(); k++)
 867                         {
 868                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
 869                                 {
 870                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 871                                 }
 872                                 else
 873                                 {
 874                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
 875                                 }
 876                         }
 877                 }
 878         }
 879 }
 880
 881
 882 void NetSendToOne(char* target,char* s)
 883 {
 884         char buffer[MAXBUF];
 885         snprintf(buffer,MAXBUF,"%s",s);
 886
 887         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
 888
 889         for (int j = 0; j < 32; j++)
 890         {
 891                 if (me[j] != NULL)
 892                 {
 893                         for (int k = 0; k < me[j]->connectors.size(); k++)
 894                         {
 895                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
 896                                 {
 897                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 898                                 }
 899                         }
 900                 }
 901         }
 902 }
 903
 904 void NetSendToAllExcept(const char* target,char* s)
 905 {
 906         char buffer[MAXBUF];
 907         snprintf(buffer,MAXBUF,"%s",s);
 908
 909         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
 910
 911         for (int j = 0; j < 32; j++)
 912         {
 913                 if (me[j] != NULL)
 914                 {
 915                         for (int k = 0; k < me[j]->connectors.size(); k++)
 916                         {
 917                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
 918                                 {
 919                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 920                                 }
 921                         }
 922                 }
 923         }
 924 }
 925
 926
 927 void WriteMode(const char* modes, int flags, const char* text, ...)
 928 {
 929         if ((!text) || (!modes) || (!flags))
 930         {
 931                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 932                 return;
 933         }
 934
 935         char textbuffer[MAXBUF];
 936         va_list argsPtr;
 937         va_start (argsPtr, text);
 938         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 939         va_end(argsPtr);
 940
 941         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 942         {
 943                 if (i->second)
 944                 {
 945                         bool send_to_user = false;
 946
 947                         if (flags == WM_AND)
 948                         {
 949                                 send_to_user = true;
 950                                 for (int n = 0; n < strlen(modes); n++)
 951                                 {
 952                                         if (!hasumode(i->second,modes[n]))
 953                                         {
 954                                                 send_to_user = false;
 955                                                 break;
 956                                         }
 957                                 }
 958                         }
 959                         else if (flags == WM_OR)
 960                         {
 961                                 send_to_user = false;
 962                                 for (int n = 0; n < strlen(modes); n++)
 963                                 {
 964                                         if (hasumode(i->second,modes[n]))
 965                                         {
 966                                                 send_to_user = true;
 967                                                 break;
 968                                         }
 969                                 }
 970                         }
 971
 972                         if (send_to_user)
 973                         {
 974                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 975                         }
 976                 }
 977         }
 978 }
 979
 980
 981 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
 982 {
 983         if ((!text) || (!source))
 984         {
 985                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 986                 return;
 987         }
 988
 989         int i = 0;
 990         char textbuffer[MAXBUF];
 991         va_list argsPtr;
 992         va_start (argsPtr, text);
 993         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 994         va_end(argsPtr);
 995
 996         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 997         {
 998                 if (i->second)
 999                 {
1000                         if (strchr(i->second->modes,'w'))
1001                         {
1002                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1003                         }
1004                 }
1005         }
1006
1007         if (!local_only)
1008         {
1009                 char buffer[MAXBUF];
1010                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1011                 NetSendToAll(buffer);
1012         }
1013 }
1014
1015 /* convert a string to lowercase. Note following special circumstances
1016  * taken from RFC 1459. Many "official" server branches still hold to this
1017  * rule so i will too;
1018  *
1019  *  Because of IRC's scandanavian origin, the characters {}| are
1020  *  considered to be the lower case equivalents of the characters []\,
1021  *  respectively. This is a critical issue when determining the
1022  *  equivalence of two nicknames.
1023  */
1024
1025 void strlower(char *n)
1026 {
1027         if (!n)
1028         {
1029                 return;
1030         }
1031         for (int i = 0; i != strlen(n); i++)
1032         {
1033                 n[i] = tolower(n[i]);
1034                 if (n[i] == '[')
1035                         n[i] = '{';
1036                 if (n[i] == ']')
1037                         n[i] = '}';
1038                 if (n[i] == '\\')
1039                         n[i] = '|';
1040         }
1041 }
1042
1043
1044
1045 /* Find a user record by nickname and return a pointer to it */
1046
1047 userrec* Find(string nick)
1048 {
1049         user_hash::iterator iter = clientlist.find(nick);
1050
1051         if (iter == clientlist.end())
1052                 /* Couldn't find it */
1053                 return NULL;
1054
1055         return iter->second;
1056 }
1057
1058 void update_stats_l(int fd,int data_out) /* add one line-out to stats L for this fd */
1059 {
1060         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1061         {
1062                 if (i->second)
1063                 {
1064                         if (i->second->fd == fd)
1065                         {
1066                                 i->second->bytes_out+=data_out;
1067                                 i->second->cmds_out++;
1068                         }
1069                 }
1070         }
1071 }
1072
1073
1074 /* find a channel record by channel name and return a pointer to it */
1075
1076 chanrec* FindChan(const char* chan)
1077 {
1078         if (!chan)
1079         {
1080                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1081                 return NULL;
1082         }
1083
1084         chan_hash::iterator iter = chanlist.find(chan);
1085
1086         if (iter == chanlist.end())
1087                 /* Couldn't find it */
1088                 return NULL;
1089
1090         return iter->second;
1091 }
1092
1093
1094 void purge_empty_chans(void)
1095 {
1096         int go_again = 1, purge = 0;
1097
1098         while (go_again)
1099         {
1100                 go_again = 0;
1101                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1102                 {
1103                         if (i->second) {
1104                                 if (!usercount(i->second))
1105                                 {
1106                                         /* kill the record */
1107                                         if (i != chanlist.end())
1108                                         {
1109                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1110                                                 delete i->second;
1111                                                 chanlist.erase(i);
1112                                                 go_again = 1;
1113                                                 purge++;
1114                                                 break;
1115                                         }
1116                                 }
1117                                 else
1118                                 {
1119                                         log(DEBUG,"skipped purge for %s",i->second->name);
1120                                 }
1121                         }
1122                 }
1123         }
1124         log(DEBUG,"completed channel purge, killed %d",purge);
1125 }
1126
1127
1128 char scratch[MAXBUF];
1129 char sparam[MAXBUF];
1130
1131 char* chanmodes(chanrec *chan)
1132 {
1133         if (!chan)
1134         {
1135                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1136                 strcpy(scratch,"");
1137                 return scratch;
1138         }
1139
1140         strcpy(scratch,"");
1141         strcpy(sparam,"");
1142         if (chan->noexternal)
1143         {
1144                 strlcat(scratch,"n",MAXMODES);
1145         }
1146         if (chan->topiclock)
1147         {
1148                 strlcat(scratch,"t",MAXMODES);
1149         }
1150         if (strcmp(chan->key,""))
1151         {
1152                 strlcat(scratch,"k",MAXMODES);
1153         }
1154         if (chan->limit)
1155         {
1156                 strlcat(scratch,"l",MAXMODES);
1157         }
1158         if (chan->inviteonly)
1159         {
1160                 strlcat(scratch,"i",MAXMODES);
1161         }
1162         if (chan->moderated)
1163         {
1164                 strlcat(scratch,"m",MAXMODES);
1165         }
1166         if (chan->secret)
1167         {
1168                 strlcat(scratch,"s",MAXMODES);
1169         }
1170         if (chan->c_private)
1171         {
1172                 strlcat(scratch,"p",MAXMODES);
1173         }
1174         if (strcmp(chan->key,""))
1175         {
1176                 strlcat(sparam," ",MAXBUF);
1177                 strlcat(sparam,chan->key,MAXBUF);
1178         }
1179         if (chan->limit)
1180         {
1181                 char foo[24];
1182                 sprintf(foo," %d",chan->limit);
1183                 strlcat(sparam,foo,MAXBUF);
1184         }
1185         if (strlen(chan->custom_modes))
1186         {
1187                 strlcat(scratch,chan->custom_modes,MAXMODES);
1188                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1189                 {
1190                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1191                         if (extparam != "")
1192                         {
1193                                 strlcat(sparam," ",MAXBUF);
1194                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1195                         }
1196                 }
1197         }
1198         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1199         strlcat(scratch,sparam,MAXMODES);
1200         return scratch;
1201 }
1202
1203
1204 /* compile a userlist of a channel into a string, each nick seperated by
1205  * spaces and op, voice etc status shown as @ and + */
1206
1207 void userlist(userrec *user,chanrec *c)
1208 {
1209         if ((!c) || (!user))
1210         {
1211                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1212                 return;
1213         }
1214
1215         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1216         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1217         {
1218                 if (has_channel(i->second,c))
1219                 {
1220                         if (isnick(i->second->nick))
1221                         {
1222                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1223                                 {
1224                                         /* user is +i, and source not on the channel, does not show
1225                                          * nick in NAMES list */
1226                                         continue;
1227                                 }
1228                                 strlcat(list,cmode(i->second,c),MAXBUF);
1229                                 strlcat(list,i->second->nick,MAXBUF);
1230                                 strlcat(list," ",MAXBUF);
1231                                 if (strlen(list)>(480-NICKMAX))
1232                                 {
1233                                         /* list overflowed into
1234                                          * multiple numerics */
1235                                         WriteServ(user->fd,list);
1236                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1237                                 }
1238                         }
1239                 }
1240         }
1241         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1242         {
1243                 WriteServ(user->fd,list);
1244         }
1245 }
1246
1247 /* return a count of the users on a specific channel accounting for
1248  * invisible users who won't increase the count. e.g. for /LIST */
1249
1250 int usercount_i(chanrec *c)
1251 {
1252         int i = 0;
1253         int count = 0;
1254
1255         if (!c)
1256         {
1257                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1258                 return 0;
1259         }
1260
1261         strcpy(list,"");
1262         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1263         {
1264                 if (i->second)
1265                 {
1266                         if (has_channel(i->second,c))
1267                         {
1268                                 if (isnick(i->second->nick))
1269                                 {
1270                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1271                                         {
1272                                                 /* user is +i, and source not on the channel, does not show
1273                                                  * nick in NAMES list */
1274                                                 continue;
1275                                         }
1276                                         count++;
1277                                 }
1278                         }
1279                 }
1280         }
1281         log(DEBUG,"usercount_i: %s %d",c->name,count);
1282         return count;
1283 }
1284
1285
1286 int usercount(chanrec *c)
1287 {
1288         int i = 0;
1289         int count = 0;
1290
1291         if (!c)
1292         {
1293                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1294                 return 0;
1295         }
1296
1297         strcpy(list,"");
1298         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1299         {
1300                 if (i->second)
1301                 {
1302                         if (has_channel(i->second,c))
1303                         {
1304                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1305                                 {
1306                                         count++;
1307                                 }
1308                         }
1309                 }
1310         }
1311         log(DEBUG,"usercount: %s %d",c->name,count);
1312         return count;
1313 }
1314
1315
1316 /* add a channel to a user, creating the record for it if needed and linking
1317  * it to the user record */
1318
1319 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1320 {
1321         if ((!user) || (!cn))
1322         {
1323                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1324                 return 0;
1325         }
1326
1327         int i = 0;
1328         chanrec* Ptr;
1329         int created = 0;
1330         char cname[MAXBUF];
1331
1332         strncpy(cname,cn,MAXBUF);
1333
1334         // we MUST declare this wherever we use FOREACH_RESULT
1335         int MOD_RESULT = 0;
1336
1337         if (strlen(cname) > CHANMAX-1)
1338         {
1339                 cname[CHANMAX-1] = '\0';
1340         }
1341
1342         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1343
1344         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1345         {
1346                 return NULL; // already on the channel!
1347         }
1348
1349
1350         if (!FindChan(cname))
1351         {
1352                 int MOD_RESULT = 0;
1353                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1354                 if (MOD_RESULT == 1) {
1355                         return NULL;
1356                 }
1357
1358                 /* create a new one */
1359                 log(DEBUG,"add_channel: creating: %s",cname);
1360                 {
1361                         chanlist[cname] = new chanrec();
1362
1363                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1364                         chanlist[cname]->topiclock = 1;
1365                         chanlist[cname]->noexternal = 1;
1366                         chanlist[cname]->created = time(NULL);
1367                         strcpy(chanlist[cname]->topic, "");
1368                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1369                         chanlist[cname]->topicset = 0;
1370                         Ptr = chanlist[cname];
1371                         log(DEBUG,"add_channel: created: %s",cname);
1372                         /* set created to 2 to indicate user
1373                          * is the first in the channel
1374                          * and should be given ops */
1375                         created = 2;
1376                 }
1377         }
1378         else
1379         {
1380                 /* channel exists, just fish out a pointer to its struct */
1381                 Ptr = FindChan(cname);
1382                 if (Ptr)
1383                 {
1384                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1385
1386                         // the override flag allows us to bypass channel modes
1387                         // and bans (used by servers)
1388                         if (!override)
1389                         {
1390                                 int MOD_RESULT = 0;
1391                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1392                                 if (MOD_RESULT == 1) {
1393                                         return NULL;
1394                                 }
1395
1396                                 if (MOD_RESULT == 0)
1397                                 {
1398
1399                                         if (strcmp(Ptr->key,""))
1400                                         {
1401                                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1402                                                 if (!key)
1403                                                 {
1404                                                         log(DEBUG,"add_channel: no key given in JOIN");
1405                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1406                                                         return NULL;
1407                                                 }
1408                                                 else
1409                                                 {
1410                                                         log(DEBUG,"key at %p is %s",key,key);
1411                                                         if (strcasecmp(key,Ptr->key))
1412                                                         {
1413                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1414                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1415                                                                 return NULL;
1416                                                         }
1417                                                 }
1418                                         }
1419                                         log(DEBUG,"add_channel: no key");
1420
1421                                         if (Ptr->inviteonly)
1422                                         {
1423                                                 log(DEBUG,"add_channel: channel is +i");
1424                                                 if (user->IsInvited(Ptr->name))
1425                                                 {
1426                                                         /* user was invited to channel */
1427                                                         /* there may be an optional channel NOTICE here */
1428                                                 }
1429                                                 else
1430                                                 {
1431                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1432                                                         return NULL;
1433                                                 }
1434                                         }
1435                                         log(DEBUG,"add_channel: channel is not +i");
1436
1437                                         if (Ptr->limit)
1438                                         {
1439                                                 if (usercount(Ptr) == Ptr->limit)
1440                                                 {
1441                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1442                                                         return NULL;
1443                                                 }
1444                                         }
1445
1446                                         log(DEBUG,"add_channel: about to walk banlist");
1447
1448                                         /* check user against the channel banlist */
1449                                         if (Ptr)
1450                                         {
1451                                                 if (Ptr->bans.size())
1452                                                 {
1453                                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1454                                                         {
1455                                                                 if (match(user->GetFullHost(),i->data))
1456                                                                 {
1457                                                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1458                                                                         return NULL;
1459                                                                 }
1460                                                         }
1461                                                 }
1462                                         }
1463
1464                                         log(DEBUG,"add_channel: bans checked");
1465
1466                                 }
1467
1468
1469                                 if ((Ptr) && (user))
1470                                 {
1471                                         user->RemoveInvite(Ptr->name);
1472                                 }
1473
1474                                 log(DEBUG,"add_channel: invites removed");
1475
1476                         }
1477                         else
1478                         {
1479                                 log(DEBUG,"Overridden checks");
1480                         }
1481
1482
1483                 }
1484                 created = 1;
1485         }
1486
1487         log(DEBUG,"Passed channel checks");
1488
1489         for (int i =0; i != MAXCHANS; i++)
1490         {
1491                 log(DEBUG,"Check location %d",i);
1492                 if (user->chans[i].channel == NULL)
1493                 {
1494                         log(DEBUG,"Adding into their channel list at location %d",i);
1495
1496                         if (created == 2)
1497                         {
1498                                 /* first user in is given ops */
1499                                 user->chans[i].uc_modes = UCMODE_OP;
1500                         }
1501                         else
1502                         {
1503                                 user->chans[i].uc_modes = 0;
1504                         }
1505                         user->chans[i].channel = Ptr;
1506                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1507
1508                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1509                         {
1510                                 // use the stamdard J token with no privilages.
1511                                 char buffer[MAXBUF];
1512                                 if (created == 2)
1513                                 {
1514                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1515                                 }
1516                                 else
1517                                 {
1518                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1519                                 }
1520                                 NetSendToAll(buffer);
1521                         }
1522
1523                         log(DEBUG,"Sent JOIN to client");
1524
1525                         if (Ptr->topicset)
1526                         {
1527                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1528                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1529                         }
1530                         userlist(user,Ptr);
1531                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1532                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1533                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1534                         FOREACH_MOD OnUserJoin(user,Ptr);
1535                         return Ptr;
1536                 }
1537         }
1538         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1539         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1540         return NULL;
1541 }
1542
1543 /* remove a channel from a users record, and remove the record from memory
1544  * if the channel has become empty */
1545
1546 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1547 {
1548         if ((!user) || (!cname))
1549         {
1550                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1551                 return NULL;
1552         }
1553
1554         chanrec* Ptr;
1555         int created = 0;
1556
1557         if ((!cname) || (!user))
1558         {
1559                 return NULL;
1560         }
1561
1562         Ptr = FindChan(cname);
1563
1564         if (!Ptr)
1565         {
1566                 return NULL;
1567         }
1568
1569         FOREACH_MOD OnUserPart(user,Ptr);
1570         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1571
1572         for (int i =0; i != MAXCHANS; i++)
1573         {
1574                 /* zap it from the channel list of the user */
1575                 if (user->chans[i].channel == Ptr)
1576                 {
1577                         if (reason)
1578                         {
1579                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1580
1581                                 if (!local)
1582                                 {
1583                                         char buffer[MAXBUF];
1584                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1585                                         NetSendToAll(buffer);
1586                                 }
1587
1588
1589                         }
1590                         else
1591                         {
1592                                 if (!local)
1593                                 {
1594                                         char buffer[MAXBUF];
1595                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1596                                         NetSendToAll(buffer);
1597                                 }
1598
1599                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1600                         }
1601                         user->chans[i].uc_modes = 0;
1602                         user->chans[i].channel = NULL;
1603                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1604                         break;
1605                 }
1606         }
1607
1608         /* if there are no users left on the channel */
1609         if (!usercount(Ptr))
1610         {
1611                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1612
1613                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1614
1615                 /* kill the record */
1616                 if (iter != chanlist.end())
1617                 {
1618                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1619                         delete iter->second;
1620                         chanlist.erase(iter);
1621                 }
1622         }
1623 }
1624
1625
1626 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1627 {
1628         if ((!src) || (!user) || (!Ptr) || (!reason))
1629         {
1630                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1631                 return;
1632         }
1633
1634         int i = 0;
1635         int created = 0;
1636
1637         if ((!Ptr) || (!user) || (!src))
1638         {
1639                 return;
1640         }
1641
1642         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1643
1644         if (!has_channel(user,Ptr))
1645         {
1646                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1647                 return;
1648         }
1649
1650         int MOD_RESULT = 0;
1651         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1652
1653         if (MOD_RESULT == ACR_DENY)
1654                 return;
1655
1656         if (MOD_RESULT == ACR_DEFAULT)
1657         {
1658                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1659                 {
1660                         if (cstatus(src,Ptr) == STATUS_HOP)
1661                         {
1662                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1663                         }
1664                         else
1665                         {
1666                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1667                         }
1668
1669                         return;
1670                 }
1671         }
1672
1673         for (int i =0; i != MAXCHANS; i++)
1674         {
1675                 /* zap it from the channel list of the user */
1676                 if (user->chans[i].channel)
1677                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1678                 {
1679                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1680                         user->chans[i].uc_modes = 0;
1681                         user->chans[i].channel = NULL;
1682                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1683                         break;
1684                 }
1685         }
1686
1687         /* if there are no users left on the channel */
1688         if (!usercount(Ptr))
1689         {
1690                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1691
1692                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1693
1694                 /* kill the record */
1695                 if (iter != chanlist.end())
1696                 {
1697                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1698                         delete iter->second;
1699                         chanlist.erase(iter);
1700                 }
1701         }
1702 }
1703
1704
1705
1706
1707 /* This function pokes and hacks at a parameter list like the following:
1708  *
1709  * PART #winbot, #darkgalaxy :m00!
1710  *
1711  * to turn it into a series of individual calls like this:
1712  *
1713  * PART #winbot :m00!
1714  * PART #darkgalaxy :m00!
1715  *
1716  * The seperate calls are sent to a callback function provided by the caller
1717  * (the caller will usually call itself recursively). The callback function
1718  * must be a command handler. Calling this function on a line with no list causes
1719  * no action to be taken. You must provide a starting and ending parameter number
1720  * where the range of the list can be found, useful if you have a terminating
1721  * parameter as above which is actually not part of the list, or parameters
1722  * before the actual list as well. This code is used by many functions which
1723  * can function as "one to list" (see the RFC) */
1724
1725 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1726 {
1727         char plist[MAXBUF];
1728         char *param;
1729         char *pars[32];
1730         char blog[32][MAXBUF];
1731         char blog2[32][MAXBUF];
1732         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1733         char keystr[MAXBUF];
1734         char moo[MAXBUF];
1735
1736         for (int i = 0; i <32; i++)
1737                 strcpy(blog[i],"");
1738
1739         for (int i = 0; i <32; i++)
1740                 strcpy(blog2[i],"");
1741
1742         strcpy(moo,"");
1743         for (int i = 0; i <10; i++)
1744         {
1745                 if (!parameters[i])
1746                 {
1747                         parameters[i] = moo;
1748                 }
1749         }
1750         if (joins)
1751         {
1752                 if (pcnt > 1) /* we have a key to copy */
1753                 {
1754                         strlcpy(keystr,parameters[1],MAXBUF);
1755                 }
1756         }
1757
1758         if (!parameters[start])
1759         {
1760                 return 0;
1761         }
1762         if (!strchr(parameters[start],','))
1763         {
1764                 return 0;
1765         }
1766         strcpy(plist,"");
1767         for (int i = start; i <= end; i++)
1768         {
1769                 if (parameters[i])
1770                 {
1771                         strlcat(plist,parameters[i],MAXBUF);
1772                 }
1773         }
1774
1775         j = 0;
1776         param = plist;
1777
1778         t = strlen(plist);
1779         for (int i = 0; i < t; i++)
1780         {
1781                 if (plist[i] == ',')
1782                 {
1783                         plist[i] = '\0';
1784                         strlcpy(blog[j++],param,MAXBUF);
1785                         param = plist+i+1;
1786                         if (j>20)
1787                         {
1788                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1789                                 return 1;
1790                         }
1791                 }
1792         }
1793         strlcpy(blog[j++],param,MAXBUF);
1794         total = j;
1795
1796         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1797         {
1798                 strcat(keystr,",");
1799         }
1800
1801         if ((joins) && (keystr))
1802         {
1803                 if (strchr(keystr,','))
1804                 {
1805                         j = 0;
1806                         param = keystr;
1807                         t2 = strlen(keystr);
1808                         for (int i = 0; i < t2; i++)
1809                         {
1810                                 if (keystr[i] == ',')
1811                                 {
1812                                         keystr[i] = '\0';
1813                                         strlcpy(blog2[j++],param,MAXBUF);
1814                                         param = keystr+i+1;
1815                                 }
1816                         }
1817                         strlcpy(blog2[j++],param,MAXBUF);
1818                         total2 = j;
1819                 }
1820         }
1821
1822         for (j = 0; j < total; j++)
1823         {
1824                 if (blog[j])
1825                 {
1826                         pars[0] = blog[j];
1827                 }
1828                 for (q = end; q < pcnt-1; q++)
1829                 {
1830                         if (parameters[q+1])
1831                         {
1832                                 pars[q-end+1] = parameters[q+1];
1833                         }
1834                 }
1835                 if ((joins) && (parameters[1]))
1836                 {
1837                         if (pcnt > 1)
1838                         {
1839                                 pars[1] = blog2[j];
1840                         }
1841                         else
1842                         {
1843                                 pars[1] = NULL;
1844                         }
1845                 }
1846                 /* repeatedly call the function with the hacked parameter list */
1847                 if ((joins) && (pcnt > 1))
1848                 {
1849                         if (pars[1])
1850                         {
1851                                 // pars[1] already set up and containing key from blog2[j]
1852                                 fn(pars,2,u);
1853                         }
1854                         else
1855                         {
1856                                 pars[1] = parameters[1];
1857                                 fn(pars,2,u);
1858                         }
1859                 }
1860                 else
1861                 {
1862                         fn(pars,pcnt-(end-start),u);
1863                 }
1864         }
1865
1866         return 1;
1867 }
1868
1869
1870
1871 void kill_link(userrec *user,const char* r)
1872 {
1873         user_hash::iterator iter = clientlist.find(user->nick);
1874
1875         char reason[MAXBUF];
1876
1877         strncpy(reason,r,MAXBUF);
1878
1879         if (strlen(reason)>MAXQUIT)
1880         {
1881                 reason[MAXQUIT-1] = '\0';
1882         }
1883
1884         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1885         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1886         log(DEBUG,"closing fd %d",user->fd);
1887
1888         /* bugfix, cant close() a nonblocking socket (sux!) */
1889         if (user->registered == 7) {
1890                 FOREACH_MOD OnUserQuit(user);
1891                 WriteCommonExcept(user,"QUIT :%s",reason);
1892
1893                 // Q token must go to ALL servers!!!
1894                 char buffer[MAXBUF];
1895                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1896                 NetSendToAll(buffer);
1897         }
1898
1899         /* push the socket on a stack of sockets due to be closed at the next opportunity
1900          * 'Client exited' is an exception to this as it means the client side has already
1901          * closed the socket, we don't need to do it.
1902          */
1903         fd_reap.push_back(user->fd);
1904
1905         bool do_purge = false;
1906
1907         if (user->registered == 7) {
1908                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
1909                 AddWhoWas(user);
1910         }
1911
1912         if (iter != clientlist.end())
1913         {
1914                 log(DEBUG,"deleting user hash value %d",iter->second);
1915                 if ((iter->second) && (user->registered == 7)) {
1916                         delete iter->second;
1917                 }
1918                 clientlist.erase(iter);
1919         }
1920
1921         if (user->registered == 7) {
1922                 purge_empty_chans();
1923         }
1924 }
1925
1926 void kill_link_silent(userrec *user,const char* r)
1927 {
1928         user_hash::iterator iter = clientlist.find(user->nick);
1929
1930         char reason[MAXBUF];
1931
1932         strncpy(reason,r,MAXBUF);
1933
1934         if (strlen(reason)>MAXQUIT)
1935         {
1936                 reason[MAXQUIT-1] = '\0';
1937         }
1938
1939         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1940         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1941         log(DEBUG,"closing fd %d",user->fd);
1942
1943         /* bugfix, cant close() a nonblocking socket (sux!) */
1944         if (user->registered == 7) {
1945                 FOREACH_MOD OnUserQuit(user);
1946                 WriteCommonExcept(user,"QUIT :%s",reason);
1947
1948                 // Q token must go to ALL servers!!!
1949                 char buffer[MAXBUF];
1950                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1951                 NetSendToAll(buffer);
1952         }
1953
1954         /* push the socket on a stack of sockets due to be closed at the next opportunity
1955          * 'Client exited' is an exception to this as it means the client side has already
1956          * closed the socket, we don't need to do it.
1957          */
1958         fd_reap.push_back(user->fd);
1959
1960         bool do_purge = false;
1961
1962         if (iter != clientlist.end())
1963         {
1964                 log(DEBUG,"deleting user hash value %d",iter->second);
1965                 if ((iter->second) && (user->registered == 7)) {
1966                         delete iter->second;
1967                 }
1968                 clientlist.erase(iter);
1969         }
1970
1971         if (user->registered == 7) {
1972                 purge_empty_chans();
1973         }
1974 }
1975
1976
1977
1978 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1979
1980 char* Passwd(userrec *user)
1981 {
1982         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1983         {
1984                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
1985                 {
1986                         return i->pass;
1987                 }
1988         }
1989         return "";
1990 }
1991
1992 bool IsDenied(userrec *user)
1993 {
1994         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1995         {
1996                 if (match(user->host,i->host) && (i->type == CC_DENY))
1997                 {
1998                         return true;
1999                 }
2000         }
2001         return false;
2002 }
2003
2004
2005
2006
2007 /* sends out an error notice to all connected clients (not to be used
2008  * lightly!) */
2009
2010 void send_error(char *s)
2011 {
2012         log(DEBUG,"send_error: %s",s);
2013         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2014         {
2015                 if (isnick(i->second->nick))
2016                 {
2017                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2018                 }
2019                 else
2020                 {
2021                         // fix - unregistered connections receive ERROR, not NOTICE
2022                         Write(i->second->fd,"ERROR :%s",s);
2023                 }
2024         }
2025 }
2026
2027 void Error(int status)
2028 {
2029         signal (SIGALRM, SIG_IGN);
2030         signal (SIGPIPE, SIG_IGN);
2031         signal (SIGTERM, SIG_IGN);
2032         signal (SIGABRT, SIG_IGN);
2033         signal (SIGSEGV, SIG_IGN);
2034         signal (SIGURG, SIG_IGN);
2035         signal (SIGKILL, SIG_IGN);
2036         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
2037         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2038         exit(status);
2039 }
2040
2041
2042 int main(int argc, char **argv)
2043 {
2044         Start();
2045         srand(time(NULL));
2046         log(DEBUG,"*** InspIRCd starting up!");
2047         if (!FileExists(CONFIG_FILE))
2048         {
2049                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2050                 log(DEBUG,"main: no config");
2051                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2052                 Exit(ERROR);
2053         }
2054         if (argc > 1) {
2055                 for (int i = 1; i < argc; i++)
2056                 {
2057                         if (!strcmp(argv[i],"-nofork")) {
2058                                 nofork = true;
2059                         }
2060                         if (!strcmp(argv[i],"-wait")) {
2061                                 sleep(6);
2062                         }
2063                 }
2064         }
2065         strlcpy(MyExecutable,argv[0],MAXBUF);
2066
2067         if (InspIRCd() == ERROR)
2068         {
2069                 log(DEBUG,"main: daemon function bailed");
2070                 printf("ERROR: could not initialise. Shutting down.\n");
2071                 Exit(ERROR);
2072         }
2073         Exit(TRUE);
2074         return 0;
2075 }
2076
2077 template<typename T> inline string ConvToStr(const T &in)
2078 {
2079         stringstream tmp;
2080         if (!(tmp << in)) return string();
2081         return tmp.str();
2082 }
2083
2084 /* re-allocates a nick in the user_hash after they change nicknames,
2085  * returns a pointer to the new user as it may have moved */
2086
2087 userrec* ReHashNick(char* Old, char* New)
2088 {
2089         user_hash::iterator newnick;
2090         user_hash::iterator oldnick = clientlist.find(Old);
2091
2092         log(DEBUG,"ReHashNick: %s %s",Old,New);
2093
2094         if (!strcasecmp(Old,New))
2095         {
2096                 log(DEBUG,"old nick is new nick, skipping");
2097                 return oldnick->second;
2098         }
2099
2100         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2101
2102         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2103
2104         clientlist[New] = new userrec();
2105         clientlist[New] = oldnick->second;
2106         /*delete oldnick->second; */
2107         clientlist.erase(oldnick);
2108
2109         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2110
2111         return clientlist[New];
2112 }
2113
2114 /* adds or updates an entry in the whowas list */
2115 void AddWhoWas(userrec* u)
2116 {
2117         user_hash::iterator iter = whowas.find(u->nick);
2118         userrec *a = new userrec();
2119         strlcpy(a->nick,u->nick,NICKMAX);
2120         strlcpy(a->ident,u->ident,64);
2121         strlcpy(a->dhost,u->dhost,256);
2122         strlcpy(a->host,u->host,256);
2123         strlcpy(a->fullname,u->fullname,128);
2124         strlcpy(a->server,u->server,256);
2125         a->signon = u->signon;
2126
2127         /* MAX_WHOWAS:   max number of /WHOWAS items
2128          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2129          *               can be replaced by a newer one
2130          */
2131
2132         if (iter == whowas.end())
2133         {
2134                 if (whowas.size() == WHOWAS_MAX)
2135                 {
2136                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2137                         {
2138                                 // 3600 seconds in an hour ;)
2139                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
2140                                 {
2141                                         delete i->second;
2142                                         i->second = a;
2143                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2144                                         return;
2145                                 }
2146                         }
2147                 }
2148                 else
2149                 {
2150                         log(DEBUG,"added fresh WHOWAS entry");
2151                         whowas[a->nick] = a;
2152                 }
2153         }
2154         else
2155         {
2156                 log(DEBUG,"updated WHOWAS entry");
2157                 delete iter->second;
2158                 iter->second = a;
2159         }
2160 }
2161
2162
2163 /* add a client connection to the sockets list */
2164 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2165 {
2166         int i;
2167         int blocking = 1;
2168         char resolved[MAXBUF];
2169         string tempnick;
2170         char tn2[MAXBUF];
2171         user_hash::iterator iter;
2172
2173         tempnick = ConvToStr(socket) + "-unknown";
2174         sprintf(tn2,"%d-unknown",socket);
2175
2176         iter = clientlist.find(tempnick);
2177
2178         if (iter != clientlist.end()) return;
2179
2180         /*
2181          * It is OK to access the value here this way since we know
2182          * it exists, we just created it above.
2183          *
2184          * At NO other time should you access a value in a map or a
2185          * hash_map this way.
2186          */
2187         clientlist[tempnick] = new userrec();
2188
2189         NonBlocking(socket);
2190         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2191
2192         clientlist[tempnick]->fd = socket;
2193         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2194         strncpy(clientlist[tempnick]->host, host,160);
2195         strncpy(clientlist[tempnick]->dhost, host,160);
2196         strncpy(clientlist[tempnick]->server, ServerName,256);
2197         strncpy(clientlist[tempnick]->ident, "unknown",9);
2198         clientlist[tempnick]->registered = 0;
2199         clientlist[tempnick]->signon = time(NULL);
2200         clientlist[tempnick]->nping = time(NULL)+240;
2201         clientlist[tempnick]->lastping = 1;
2202         clientlist[tempnick]->port = port;
2203         strncpy(clientlist[tempnick]->ip,ip,32);
2204
2205         if (iscached)
2206         {
2207                 WriteServ(socket,"NOTICE Auth :Found your hostname (cached)...");
2208         }
2209         else
2210         {
2211                 WriteServ(socket,"NOTICE Auth :Looking up your hostname...");
2212         }
2213
2214         // set the registration timeout for this user
2215         unsigned long class_regtimeout = 90;
2216         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2217         {
2218                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2219                 {
2220                         class_regtimeout = (unsigned long)i->registration_timeout;
2221                         break;
2222                 }
2223         }
2224
2225         int class_flood = 0;
2226         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2227         {
2228                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2229                 {
2230                         class_flood = i->flood;
2231                         break;
2232                 }
2233         }
2234
2235         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
2236         clientlist[tempnick]->flood = class_flood;
2237
2238         for (int i = 0; i < MAXCHANS; i++)
2239         {
2240                 clientlist[tempnick]->chans[i].channel = NULL;
2241                 clientlist[tempnick]->chans[i].uc_modes = 0;
2242         }
2243
2244         if (clientlist.size() == MAXCLIENTS)
2245                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2246
2247         char* r = matches_zline(ip);
2248         if (r)
2249         {
2250                 char reason[MAXBUF];
2251                 snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2252                 kill_link(clientlist[tempnick],reason);
2253         }
2254 }
2255
2256
2257 int usercnt(void)
2258 {
2259         return clientlist.size();
2260 }
2261
2262
2263 int usercount_invisible(void)
2264 {
2265         int c = 0;
2266
2267         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2268         {
2269                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2270         }
2271         return c;
2272 }
2273
2274 int usercount_opers(void)
2275 {
2276         int c = 0;
2277
2278         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2279         {
2280                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2281         }
2282         return c;
2283 }
2284
2285 int usercount_unknown(void)
2286 {
2287         int c = 0;
2288
2289         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2290         {
2291                 if ((i->second->fd) && (i->second->registered != 7))
2292                         c++;
2293         }
2294         return c;
2295 }
2296
2297 long chancount(void)
2298 {
2299         return chanlist.size();
2300 }
2301
2302 long count_servs(void)
2303 {
2304         int c = 0;
2305         //for (int j = 0; j < 255; j++)
2306         //{
2307         //      if (servers[j] != NULL)
2308         //              c++;
2309         //}
2310         return c;
2311 }
2312
2313 long servercount(void)
2314 {
2315         return count_servs()+1;
2316 }
2317
2318 long local_count()
2319 {
2320         int c = 0;
2321         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2322         {
2323                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2324         }
2325         return c;
2326 }
2327
2328
2329 void ShowMOTD(userrec *user)
2330 {
2331         if (!MOTD.size())
2332         {
2333                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2334                 return;
2335         }
2336         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
2337         for (int i = 0; i != MOTD.size(); i++)
2338         {
2339                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
2340         }
2341         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
2342 }
2343
2344 void ShowRULES(userrec *user)
2345 {
2346         if (!RULES.size())
2347         {
2348                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2349                 return;
2350         }
2351         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2352         for (int i = 0; i != RULES.size(); i++)
2353         {
2354                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2355         }
2356         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2357 }
2358
2359 /* shows the message of the day, and any other on-logon stuff */
2360 void ConnectUser(userrec *user)
2361 {
2362         user->registered = 7;
2363         user->idle_lastmsg = time(NULL);
2364         log(DEBUG,"ConnectUser: %s",user->nick);
2365
2366         if (strcmp(Passwd(user),"") && (!user->haspassed))
2367         {
2368                 kill_link(user,"Invalid password");
2369                 return;
2370         }
2371         if (IsDenied(user))
2372         {
2373                 kill_link(user,"Unauthorised connection");
2374                 return;
2375         }
2376
2377         char match_against[MAXBUF];
2378         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2379         char* r = matches_gline(match_against);
2380         if (r)
2381         {
2382                 char reason[MAXBUF];
2383                 snprintf(reason,MAXBUF,"G-Lined: %s",r);
2384                 kill_link_silent(user,reason);
2385                 return;
2386         }
2387
2388         r = matches_kline(user->host);
2389         if (r)
2390         {
2391                 char reason[MAXBUF];
2392                 snprintf(reason,MAXBUF,"K-Lined: %s",r);
2393                 kill_link_silent(user,reason);
2394                 return;
2395         }
2396
2397         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2398         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2399         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2400         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2401         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2402         std::string data005 = "WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+MAP SAFELIST MAXCHANNELS=20 MAXBANS=60 NICKLEN=30 TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvbe,k,l,psmnti NETWORK=" + std::string(Network);
2403         FOREACH_MOD On005Numeric(data005);
2404         WriteServ(user->fd,"005 %s %s :are supported by this server",user->nick,data005.c_str());
2405         ShowMOTD(user);
2406         FOREACH_MOD OnUserConnect(user);
2407         WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]",user->port,user->nick,user->ident,user->host,user->ip);
2408
2409         char buffer[MAXBUF];
2410         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);
2411         NetSendToAll(buffer);
2412 }
2413
2414 void handle_version(char **parameters, int pcnt, userrec *user)
2415 {
2416         char Revision[] = "$Revision$";
2417
2418         char *s1 = Revision;
2419         char *savept;
2420         char *v1 = strtok_r(s1," ",&savept);
2421         s1 = savept;
2422         char *v2 = strtok_r(s1," ",&savept);
2423         s1 = savept;
2424
2425         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2426 }
2427
2428
2429 // calls a handler function for a command
2430
2431 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2432 {
2433                 for (int i = 0; i < cmdlist.size(); i++)
2434                 {
2435                         if (!strcasecmp(cmdlist[i].command,commandname))
2436                         {
2437                                 if (cmdlist[i].handler_function)
2438                                 {
2439                                         if (pcnt>=cmdlist[i].min_params)
2440                                         {
2441                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2442                                                 {
2443                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2444                                                 }
2445                                         }
2446                                 }
2447                         }
2448                 }
2449 }
2450
2451 void DoSplitEveryone()
2452 {
2453         bool go_again = true;
2454         while (go_again)
2455         {
2456                 go_again = false;
2457                 for (int i = 0; i < 32; i++)
2458                 {
2459                         if (me[i] != NULL)
2460                         {
2461                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2462                                 {
2463                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2464                                         {
2465                                                 j->routes.clear();
2466                                                 j->CloseConnection();
2467                                                 me[i]->connectors.erase(j);
2468                                                 go_again = true;
2469                                                 break;
2470                                         }
2471                                 }
2472                         }
2473                 }
2474         }
2475         log(DEBUG,"Removed server. Will remove clients...");
2476         // iterate through the userlist and remove all users on this server.
2477         // because we're dealing with a mesh, we dont have to deal with anything
2478         // "down-route" from this server (nice huh)
2479         go_again = true;
2480         char reason[MAXBUF];
2481         while (go_again)
2482         {
2483                 go_again = false;
2484                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2485                 {
2486                         if (strcasecmp(u->second->server,ServerName))
2487                         {
2488                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2489                                 kill_link(u->second,reason);
2490                                 go_again = true;
2491                                 break;
2492                         }
2493                 }
2494         }
2495 }
2496
2497
2498
2499 char islast(const char* s)
2500 {
2501         char c = '`';
2502         for (int j = 0; j < 32; j++)
2503         {
2504                 if (me[j] != NULL)
2505                 {
2506                         for (int k = 0; k < me[j]->connectors.size(); k++)
2507                         {
2508                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2509                                 {
2510                                         c = '|';
2511                                 }
2512                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2513                                 {
2514                                         c = '`';
2515                                 }
2516                         }
2517                 }
2518         }
2519         return c;
2520 }
2521
2522 long map_count(const char* s)
2523 {
2524         int c = 0;
2525         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2526         {
2527                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2528         }
2529         return c;
2530 }
2531
2532
2533 void force_nickchange(userrec* user,const char* newnick)
2534 {
2535         char nick[MAXBUF];
2536         int MOD_RESULT = 0;
2537
2538         strcpy(nick,"");
2539
2540         FOREACH_RESULT(OnUserPreNick(user,newnick));
2541         if (MOD_RESULT) {
2542                 kill_link(user,"Nickname collision");
2543                 return;
2544         }
2545         if (matches_qline(newnick))
2546         {
2547                 kill_link(user,"Nickname collision");
2548                 return;
2549         }
2550
2551         if (user)
2552         {
2553                 if (newnick)
2554                 {
2555                         strncpy(nick,newnick,MAXBUF);
2556                 }
2557                 if (user->registered == 7)
2558                 {
2559                         char* pars[1];
2560                         pars[0] = nick;
2561                         handle_nick(pars,1,user);
2562                 }
2563         }
2564 }
2565
2566
2567 int process_parameters(char **command_p,char *parameters)
2568 {
2569         int i = 0;
2570         int j = 0;
2571         int q = 0;
2572         q = strlen(parameters);
2573         if (!q)
2574         {
2575                 /* no parameters, command_p invalid! */
2576                 return 0;
2577         }
2578         if (parameters[0] == ':')
2579         {
2580                 command_p[0] = parameters+1;
2581                 return 1;
2582         }
2583         if (q)
2584         {
2585                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2586                 {
2587                         /* only one parameter */
2588                         command_p[0] = parameters;
2589                         if (parameters[0] == ':')
2590                         {
2591                                 if (strchr(parameters,' ') != NULL)
2592                                 {
2593                                         command_p[0]++;
2594                                 }
2595                         }
2596                         return 1;
2597                 }
2598         }
2599         command_p[j++] = parameters;
2600         for (int i = 0; i <= q; i++)
2601         {
2602                 if (parameters[i] == ' ')
2603                 {
2604                         command_p[j++] = parameters+i+1;
2605                         parameters[i] = '\0';
2606                         if (command_p[j-1][0] == ':')
2607                         {
2608                                 *command_p[j-1]++; /* remove dodgy ":" */
2609                                 break;
2610                                 /* parameter like this marks end of the sequence */
2611                         }
2612                 }
2613         }
2614         return j; /* returns total number of items in the list */
2615 }
2616
2617 void process_command(userrec *user, char* cmd)
2618 {
2619         char *parameters;
2620         char *command;
2621         char *command_p[127];
2622         char p[MAXBUF], temp[MAXBUF];
2623         int i, j, items, cmd_found;
2624
2625         for (int i = 0; i < 127; i++)
2626                 command_p[i] = NULL;
2627
2628         if (!user)
2629         {
2630                 return;
2631         }
2632         if (!cmd)
2633         {
2634                 return;
2635         }
2636         if (!strcmp(cmd,""))
2637         {
2638                 return;
2639         }
2640
2641         int total_params = 0;
2642         if (strlen(cmd)>2)
2643         {
2644                 for (int q = 0; q < strlen(cmd)-1; q++)
2645                 {
2646                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2647                         {
2648                                 total_params++;
2649                                 // found a 'trailing', we dont count them after this.
2650                                 break;
2651                         }
2652                         if (cmd[q] == ' ')
2653                                 total_params++;
2654                 }
2655         }
2656
2657         // another phidjit bug...
2658         if (total_params > 126)
2659         {
2660                 //kill_link(user,"Protocol violation (1)");
2661                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2662                 return;
2663         }
2664
2665         strlcpy(temp,cmd,MAXBUF);
2666
2667         std::string tmp = cmd;
2668         for (int i = 0; i <= MODCOUNT; i++)
2669         {
2670                 std::string oldtmp = tmp;
2671                 modules[i]->OnServerRaw(tmp,true,user);
2672                 if (oldtmp != tmp)
2673                 {
2674                         log(DEBUG,"A Module changed the input string!");
2675                         log(DEBUG,"New string: %s",tmp.c_str());
2676                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2677                         break;
2678                 }
2679         }
2680         strlcpy(cmd,tmp.c_str(),MAXBUF);
2681         strlcpy(temp,cmd,MAXBUF);
2682
2683         if (!strchr(cmd,' '))
2684         {
2685                 /* no parameters, lets skip the formalities and not chop up
2686                  * the string */
2687                 log(DEBUG,"About to preprocess command with no params");
2688                 items = 0;
2689                 command_p[0] = NULL;
2690                 parameters = NULL;
2691                 for (int i = 0; i <= strlen(cmd); i++)
2692                 {
2693                         cmd[i] = toupper(cmd[i]);
2694                 }
2695                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2696                 command = cmd;
2697         }
2698         else
2699         {
2700                 strcpy(cmd,"");
2701                 j = 0;
2702                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2703                 for (int i = 0; i < strlen(temp); i++)
2704                 {
2705                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2706                         {
2707                                 cmd[j++] = temp[i];
2708                                 cmd[j] = 0;
2709                         }
2710                 }
2711                 /* split the full string into a command plus parameters */
2712                 parameters = p;
2713                 strcpy(p," ");
2714                 command = cmd;
2715                 if (strchr(cmd,' '))
2716                 {
2717                         for (int i = 0; i <= strlen(cmd); i++)
2718                         {
2719                                 /* capitalise the command ONLY, leave params intact */
2720                                 cmd[i] = toupper(cmd[i]);
2721                                 /* are we nearly there yet?! :P */
2722                                 if (cmd[i] == ' ')
2723                                 {
2724                                         command = cmd;
2725                                         parameters = cmd+i+1;
2726                                         cmd[i] = '\0';
2727                                         break;
2728                                 }
2729                         }
2730                 }
2731                 else
2732                 {
2733                         for (int i = 0; i <= strlen(cmd); i++)
2734                         {
2735                                 cmd[i] = toupper(cmd[i]);
2736                         }
2737                 }
2738
2739         }
2740         cmd_found = 0;
2741
2742         if (strlen(command)>MAXCOMMAND)
2743         {
2744                 //kill_link(user,"Protocol violation (2)");
2745                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2746                 return;
2747         }
2748
2749         for (int x = 0; x < strlen(command); x++)
2750         {
2751                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2752                 {
2753                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2754                         {
2755                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2756                                 {
2757                                         //kill_link(user,"Protocol violation (3)");
2758                                         WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2759                                         return;
2760                                 }
2761                         }
2762                 }
2763         }
2764
2765         for (int i = 0; i != cmdlist.size(); i++)
2766         {
2767                 if (strcmp(cmdlist[i].command,""))
2768                 {
2769                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2770                         {
2771                                 log(DEBUG,"Found matching command");
2772
2773                                 if (parameters)
2774                                 {
2775                                         if (strcmp(parameters,""))
2776                                         {
2777                                                 items = process_parameters(command_p,parameters);
2778                                         }
2779                                         else
2780                                         {
2781                                                 items = 0;
2782                                                 command_p[0] = NULL;
2783                                         }
2784                                 }
2785                                 else
2786                                 {
2787                                         items = 0;
2788                                         command_p[0] = NULL;
2789                                 }
2790
2791                                 if (user)
2792                                 {
2793                                         log(DEBUG,"Processing command");
2794
2795                                         /* activity resets the ping pending timer */
2796                                         user->nping = time(NULL) + 120;
2797                                         if ((items) < cmdlist[i].min_params)
2798                                         {
2799                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2800                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2801                                                 return;
2802                                         }
2803                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2804                                         {
2805                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2806                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2807                                                 cmd_found = 1;
2808                                                 return;
2809                                         }
2810                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
2811                                         {
2812                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2813                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
2814                                                 cmd_found = 1;
2815                                                 return;
2816                                         }
2817                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2818                                          * deny command! */
2819                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2820                                         {
2821                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2822                                                 {
2823                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2824                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2825                                                         return;
2826                                                 }
2827                                         }
2828                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
2829                                         {
2830                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
2831                                                 if (cmdlist[i].handler_function)
2832                                                 {
2833                                                         /* ikky /stats counters */
2834                                                         if (temp)
2835                                                         {
2836                                                                 if (user)
2837                                                                 {
2838                                                                         user->bytes_in += strlen(temp);
2839                                                                         user->cmds_in++;
2840                                                                 }
2841                                                                 cmdlist[i].use_count++;
2842                                                                 cmdlist[i].total_bytes+=strlen(temp);
2843                                                         }
2844
2845                                                         /* WARNING: nothing may come after the
2846                                                          * command handler call, as the handler
2847                                                          * may free the user structure! */
2848
2849                                                         cmdlist[i].handler_function(command_p,items,user);
2850                                                 }
2851                                                 return;
2852                                         }
2853                                         else
2854                                         {
2855                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2856                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
2857                                                 return;
2858                                         }
2859                                 }
2860                                 cmd_found = 1;
2861                         }
2862                 }
2863         }
2864         if ((!cmd_found) && (user))
2865         {
2866                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
2867                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2868         }
2869 }
2870
2871
2872 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
2873 {
2874         command_t comm;
2875         /* create the command and push it onto the table */
2876         strlcpy(comm.command,cmd,MAXBUF);
2877         comm.handler_function = f;
2878         comm.flags_needed = flags;
2879         comm.min_params = minparams;
2880         comm.use_count = 0;
2881         comm.total_bytes = 0;
2882         cmdlist.push_back(comm);
2883         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
2884 }
2885
2886 void SetupCommandTable(void)
2887 {
2888         createcommand("USER",handle_user,0,4);
2889         createcommand("NICK",handle_nick,0,1);
2890         createcommand("QUIT",handle_quit,0,0);
2891         createcommand("VERSION",handle_version,0,0);
2892         createcommand("PING",handle_ping,0,1);
2893         createcommand("PONG",handle_pong,0,1);
2894         createcommand("ADMIN",handle_admin,0,0);
2895         createcommand("PRIVMSG",handle_privmsg,0,2);
2896         createcommand("INFO",handle_info,0,0);
2897         createcommand("TIME",handle_time,0,0);
2898         createcommand("WHOIS",handle_whois,0,1);
2899         createcommand("WALLOPS",handle_wallops,'o',1);
2900         createcommand("NOTICE",handle_notice,0,2);
2901         createcommand("JOIN",handle_join,0,1);
2902         createcommand("NAMES",handle_names,0,1);
2903         createcommand("PART",handle_part,0,1);
2904         createcommand("KICK",handle_kick,0,2);
2905         createcommand("MODE",handle_mode,0,1);
2906         createcommand("TOPIC",handle_topic,0,1);
2907         createcommand("WHO",handle_who,0,1);
2908         createcommand("MOTD",handle_motd,0,0);
2909         createcommand("RULES",handle_rules,0,0);
2910         createcommand("OPER",handle_oper,0,2);
2911         createcommand("LIST",handle_list,0,0);
2912         createcommand("DIE",handle_die,'o',1);
2913         createcommand("RESTART",handle_restart,'o',1);
2914         createcommand("KILL",handle_kill,'o',2);
2915         createcommand("REHASH",handle_rehash,'o',0);
2916         createcommand("LUSERS",handle_lusers,0,0);
2917         createcommand("STATS",handle_stats,0,1);
2918         createcommand("USERHOST",handle_userhost,0,1);
2919         createcommand("AWAY",handle_away,0,0);
2920         createcommand("ISON",handle_ison,0,0);
2921         createcommand("SUMMON",handle_summon,0,0);
2922         createcommand("USERS",handle_users,0,0);
2923         createcommand("INVITE",handle_invite,0,2);
2924         createcommand("PASS",handle_pass,0,1);
2925         createcommand("TRACE",handle_trace,'o',0);
2926         createcommand("WHOWAS",handle_whowas,0,1);
2927         createcommand("CONNECT",handle_connect,'o',1);
2928         createcommand("SQUIT",handle_squit,'o',0);
2929         createcommand("MODULES",handle_modules,'o',0);
2930         createcommand("LINKS",handle_links,0,0);
2931         createcommand("MAP",handle_map,0,0);
2932         createcommand("KLINE",handle_kline,'o',1);
2933         createcommand("GLINE",handle_gline,'o',1);
2934         createcommand("ZLINE",handle_zline,'o',1);
2935         createcommand("QLINE",handle_qline,'o',1);
2936         createcommand("SERVER",handle_server,0,0);
2937 }
2938
2939 void process_buffer(const char* cmdbuf,userrec *user)
2940 {
2941         if (!user)
2942         {
2943                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2944                 return;
2945         }
2946         char cmd[MAXBUF];
2947         int i;
2948         if (!cmdbuf)
2949         {
2950                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2951                 return;
2952         }
2953         if (!strcmp(cmdbuf,""))
2954         {
2955                 return;
2956         }
2957         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
2958
2959         strlcpy(cmd,cmdbuf,MAXBUF);
2960         if (!strcmp(cmd,""))
2961         {
2962                 return;
2963         }
2964         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
2965         {
2966                 cmd[strlen(cmd)-1] = '\0';
2967         }
2968         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
2969         {
2970                 cmd[strlen(cmd)-1] = '\0';
2971         }
2972
2973         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
2974         {
2975                 cmd[strlen(cmd)-1] = '\0';
2976         }
2977
2978         if (!strcmp(cmd,""))
2979         {
2980                 return;
2981         }
2982         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
2983         tidystring(cmd);
2984         if ((user) && (cmd))
2985         {
2986                 process_command(user,cmd);
2987         }
2988 }
2989
2990 void DoSync(serverrec* serv, char* tcp_host)
2991 {
2992         char data[MAXBUF];
2993         log(DEBUG,"Sending sync");
2994         // send start of sync marker: Y <timestamp>
2995         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
2996         // except the ones its receiving it from.
2997         snprintf(data,MAXBUF,"Y %d",time(NULL));
2998         serv->SendPacket(data,tcp_host);
2999         // send users and channels
3000         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3001         {
3002                 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);
3003                 serv->SendPacket(data,tcp_host);
3004                 if (strchr(u->second->modes,'o'))
3005                 {
3006                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3007                         serv->SendPacket(data,tcp_host);
3008                 }
3009                 for (int i = 0; i <= MODCOUNT; i++)
3010                 {
3011                         string_list l = modules[i]->OnUserSync(u->second);
3012                         for (int j = 0; j < l.size(); j++)
3013                         {
3014                                 strlcpy(data,l[j].c_str(),MAXBUF);
3015                                 serv->SendPacket(data,tcp_host);
3016                         }
3017                 }
3018                 if (strcmp(chlist(u->second),""))
3019                 {
3020                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
3021                         serv->SendPacket(data,tcp_host);
3022                 }
3023         }
3024         // send channel modes, topics etc...
3025         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3026         {
3027                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3028                 serv->SendPacket(data,tcp_host);
3029                 for (int i = 0; i <= MODCOUNT; i++)
3030                 {
3031                         string_list l = modules[i]->OnChannelSync(c->second);
3032                         for (int j = 0; j < l.size(); j++)
3033                         {
3034                                 strlcpy(data,l[j].c_str(),MAXBUF);
3035                                 serv->SendPacket(data,tcp_host);
3036                         }
3037                 }
3038                 if (strcmp(c->second->topic,""))
3039                 {
3040                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3041                         serv->SendPacket(data,tcp_host);
3042                 }
3043                 // send current banlist
3044
3045                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3046                 {
3047                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
3048                         serv->SendPacket(data,tcp_host);
3049                 }
3050         }
3051         // sync global zlines, glines, etc
3052         sync_xlines(serv,tcp_host);
3053
3054         for (int j = 0; j < 32; j++)
3055         {
3056                 if (me[j] != NULL)
3057                 {
3058                         for (int k = 0; k < me[j]->connectors.size(); k++)
3059                         {
3060                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3061                                 {
3062                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3063                                         serv->SendPacket(data,tcp_host);
3064                                         NetSendMyRoutingTable();
3065                                 }
3066                         }
3067                 }
3068         }
3069
3070         snprintf(data,MAXBUF,"F %d",time(NULL));
3071         serv->SendPacket(data,tcp_host);
3072         log(DEBUG,"Sent sync");
3073         // ircd sends its serverlist after the end of sync here
3074 }
3075
3076
3077 void NetSendMyRoutingTable()
3078 {
3079         // send out a line saying what is reachable to us.
3080         // E.g. if A is linked to B C and D, send out:
3081         // $ A B C D
3082         // if its only linked to B and D send out:
3083         // $ A B D
3084         // if it has no links, dont even send out the line at all.
3085         char buffer[MAXBUF];
3086         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3087         bool sendit = false;
3088         for (int i = 0; i < 32; i++)
3089         {
3090                 if (me[i] != NULL)
3091                 {
3092                         for (int j = 0; j < me[i]->connectors.size(); j++)
3093                         {
3094                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3095                                 {
3096                                         strlcat(buffer," ",MAXBUF);
3097                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3098                                         sendit = true;
3099                                 }
3100                         }
3101                 }
3102         }
3103         if (sendit)
3104                 NetSendToAll(buffer);
3105 }
3106
3107
3108 void DoSplit(const char* params)
3109 {
3110         bool go_again = true;
3111         while (go_again)
3112         {
3113                 go_again = false;
3114                 for (int i = 0; i < 32; i++)
3115                 {
3116                         if (me[i] != NULL)
3117                         {
3118                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3119                                 {
3120                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3121                                         {
3122                                                 j->routes.clear();
3123                                                 j->CloseConnection();
3124                                                 me[i]->connectors.erase(j);
3125                                                 go_again = true;
3126                                                 break;
3127                                         }
3128                                 }
3129                         }
3130                 }
3131         }
3132         log(DEBUG,"Removed server. Will remove clients...");
3133         // iterate through the userlist and remove all users on this server.
3134         // because we're dealing with a mesh, we dont have to deal with anything
3135         // "down-route" from this server (nice huh)
3136         go_again = true;
3137         char reason[MAXBUF];
3138         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3139         while (go_again)
3140         {
3141                 go_again = false;
3142                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3143                 {
3144                         if (!strcasecmp(u->second->server,params))
3145                         {
3146                                 kill_link(u->second,reason);
3147                                 go_again = true;
3148                                 break;
3149                         }
3150                 }
3151         }
3152 }
3153
3154 // removes a server. Will NOT remove its users!
3155
3156 void RemoveServer(const char* name)
3157 {
3158         bool go_again = true;
3159         while (go_again)
3160         {
3161                 go_again = false;
3162                 for (int i = 0; i < 32; i++)
3163                 {
3164                         if (me[i] != NULL)
3165                         {
3166                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3167                                 {
3168                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3169                                         {
3170                                                 j->routes.clear();
3171                                                 j->CloseConnection();
3172                                                 me[i]->connectors.erase(j);
3173                                                 go_again = true;
3174                                                 break;
3175                                         }
3176                                 }
3177                         }
3178                 }
3179         }
3180 }
3181
3182
3183 int reap_counter = 0;
3184
3185 int InspIRCd(void)
3186 {
3187         struct sockaddr_in client,server;
3188         char addrs[MAXBUF][255];
3189         int openSockfd[MAXSOCKS], incomingSockfd, result = TRUE;
3190         socklen_t length;
3191         int count = 0;
3192         int selectResult = 0, selectResult2 = 0;
3193         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3194         char resolvedHost[MAXBUF];
3195         fd_set selectFds;
3196         struct timeval tv;
3197
3198         log_file = fopen("ircd.log","a+");
3199         if (!log_file)
3200         {
3201                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3202                 Exit(ERROR);
3203         }
3204
3205         log(DEBUG,"InspIRCd: startup: begin");
3206         log(DEBUG,"$Id$");
3207         if (geteuid() == 0)
3208         {
3209                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3210                 Exit(ERROR);
3211                 log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
3212         }
3213         SetupCommandTable();
3214         log(DEBUG,"InspIRCd: startup: default command table set up");
3215
3216         ReadConfig(true,NULL);
3217         if (strcmp(DieValue,""))
3218         {
3219                 printf("WARNING: %s\n\n",DieValue);
3220                 exit(0);
3221         }
3222         log(DEBUG,"InspIRCd: startup: read config");
3223
3224         int count2 = 0, count3 = 0;
3225
3226         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3227         {
3228                 ConfValue("bind","port",count,configToken,&config_f);
3229                 ConfValue("bind","address",count,Addr,&config_f);
3230                 ConfValue("bind","type",count,Type,&config_f);
3231                 if (!strcmp(Type,"servers"))
3232                 {
3233                         char Default[MAXBUF];
3234                         strcpy(Default,"no");
3235                         ConfValue("bind","default",count,Default,&config_f);
3236                         if (strchr(Default,'y'))
3237                         {
3238                                 defaultRoute = count3;
3239                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3240                         }
3241                         me[count3] = new serverrec(ServerName,100L,false);
3242                         if (!me[count3]->CreateListener(Addr,atoi(configToken)))
3243                         {
3244                                 log(DEFAULT,"Error! Failed to bind port %d",atoi(configToken));
3245                         }
3246                         else
3247                         {
3248                                 count3++;
3249                         }
3250                 }
3251                 else
3252                 {
3253                         ports[count2] = atoi(configToken);
3254                         strlcpy(addrs[count2],Addr,256);
3255                         count2++;
3256                 }
3257                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3258         }
3259         portCount = count2;
3260         UDPportCount = count3;
3261
3262         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3263
3264         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3265
3266         printf("\n");
3267
3268         /* BugFix By Craig! :p */
3269         count = 0;
3270         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3271         {
3272                 char modfile[MAXBUF];
3273                 ConfValue("module","name",count2,configToken,&config_f);
3274                 snprintf(modfile,MAXBUF,"%s/%s",MOD_PATH,configToken,&config_f);
3275                 printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
3276                 log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
3277                 /* If The File Doesnt exist, Trying to load it
3278                  * Will Segfault the IRCd.. So, check to see if
3279                  * it Exists, Before Proceeding. */
3280                 if (FileExists(modfile))
3281                 {
3282                         factory[count] = new ircd_module(modfile);
3283                         if (factory[count]->LastError())
3284                         {
3285                                 log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
3286                                 printf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
3287                                 Exit(ERROR);
3288                         }
3289                         if (factory[count]->factory)
3290                         {
3291                                 modules[count] = factory[count]->factory->CreateModule();
3292                                 /* save the module and the module's classfactory, if
3293                                  * this isnt done, random crashes can occur :/ */
3294                                 module_names.push_back(modfile);
3295                         }
3296                         else
3297                         {
3298                                 log(DEBUG,"Unable to load %s",modfile);
3299                                 printf("Unable to load %s\nExiting...\n",modfile);
3300                                 Exit(ERROR);
3301                         }
3302                         /* Increase the Count */
3303                         count++;
3304                 }
3305                 else
3306                 {
3307                         log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
3308                         printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
3309                 }
3310         }
3311         MODCOUNT = count - 1;
3312         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3313
3314         printf("\nInspIRCd is now running!\n");
3315
3316         startup_time = time(NULL);
3317
3318         if (nofork)
3319         {
3320                 log(VERBOSE,"Not forking as -nofork was specified");
3321         }
3322         else
3323         {
3324                 if (DaemonSeed() == ERROR)
3325                 {
3326                         log(DEBUG,"InspIRCd: startup: can't daemonise");
3327                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3328                         Exit(ERROR);
3329                 }
3330         }
3331
3332
3333         /* setup select call */
3334         FD_ZERO(&selectFds);
3335         log(DEBUG,"InspIRCd: startup: zero selects");
3336         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3337
3338         for (count = 0; count < portCount; count++)
3339         {
3340                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3341                 {
3342                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3343                         return(ERROR);
3344                 }
3345                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3346                 {
3347                         log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
3348                 }
3349                 else    /* well we at least bound to one socket so we'll continue */
3350                 {
3351                         boundPortCount++;
3352                 }
3353         }
3354
3355         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3356
3357         /* if we didn't bind to anything then abort */
3358         if (boundPortCount == 0)
3359         {
3360                 log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
3361                 return (ERROR);
3362         }
3363
3364
3365         length = sizeof (client);
3366         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3367
3368         /* main loop, this never returns */
3369         for (;;)
3370         {
3371 #ifdef _POSIX_PRIORITY_SCHEDULING
3372                 sched_yield();
3373 #endif
3374                 // update the status of klines, etc
3375                 expire_lines();
3376
3377                 fd_set sfd;
3378                 timeval tval;
3379                 FD_ZERO(&sfd);
3380
3381                 user_hash::iterator count2 = clientlist.begin();
3382
3383                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3384                 // them in a list, then reap the list every second or so.
3385                 if (reap_counter>300)
3386                 {
3387                         if (fd_reap.size() > 0)
3388                         {
3389                                 for( int n = 0; n < fd_reap.size(); n++)
3390                                 {
3391                                         Blocking(fd_reap[n]);
3392                                         close(fd_reap[n]);
3393                                         NonBlocking(fd_reap[n]);
3394                                 }
3395                         }
3396                         fd_reap.clear();
3397                         reap_counter=0;
3398                 }
3399                 reap_counter++;
3400
3401                 fd_set serverfds;
3402                 FD_ZERO(&serverfds);
3403                 timeval tvs;
3404
3405                 for (int x = 0; x != UDPportCount; x++)
3406                 {
3407                         if (me[x])
3408                                 FD_SET(me[x]->fd, &serverfds);
3409                 }
3410
3411                 tvs.tv_usec = 0;
3412                 tvs.tv_sec = 0;
3413
3414                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3415                 if (servresult > 0)
3416                 {
3417                         for (int x = 0; x != UDPportCount; x++)
3418                         {
3419                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3420                                 {
3421                                         char remotehost[MAXBUF],resolved[MAXBUF];
3422                                         length = sizeof (client);
3423                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3424                                         strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3425                                         if(CleanAndResolve(resolved, remotehost) != TRUE)
3426                                         {
3427                                                 strlcpy(resolved,remotehost,MAXBUF);
3428                                         }
3429                                         // add to this connections ircd_connector vector
3430                                         // *FIX* - we need the LOCAL port not the remote port in &client!
3431                                         me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3432                                 }
3433                         }
3434                 }
3435
3436                 for (int x = 0; x < UDPportCount; x++)
3437                 {
3438                         std::deque<std::string> msgs;
3439                         msgs.clear();
3440                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3441                         {
3442                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3443                                 {
3444                                         char udp_msg[MAXBUF];
3445                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3446                                         if (strlen(udp_msg)<1)
3447                                         {
3448                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3449                                                 break;
3450                                         }
3451                                         // during a netburst, send all data to all other linked servers
3452                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3453                                         {
3454                                                 if (is_uline(tcp_host))
3455                                                 {
3456                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3457                                                         {
3458                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3459                                                         }
3460                                                 }
3461                                                 else
3462                                                         NetSendToAllExcept(tcp_host,udp_msg);
3463                                         }
3464                                         FOREACH_MOD OnPacketReceive(udp_msg);
3465                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3466                                 }
3467                                 goto label;
3468                         }
3469                 }
3470
3471
3472         while (count2 != clientlist.end())
3473         {
3474                 char data[10240];
3475                 tval.tv_usec = tval.tv_sec = 0;
3476                 FD_ZERO(&sfd);
3477                 int total_in_this_set = 0;
3478
3479                 user_hash::iterator xcount = count2;
3480                 user_hash::iterator endingiter = count2;
3481
3482                 if (!count2->second) break;
3483
3484                 if (count2->second)
3485                 if (count2->second->fd != 0)
3486                 {
3487                         // assemble up to 64 sockets into an fd_set
3488                         // to implement a pooling mechanism.
3489                         //
3490                         // This should be up to 64x faster than the
3491                         // old implementation.
3492                         while (total_in_this_set < 64)
3493                         {
3494                                 if (count2 != clientlist.end())
3495                                 {
3496                                         // we don't check the state of remote users.
3497                                         if (count2->second->fd > 0)
3498                                         {
3499                                                 FD_SET (count2->second->fd, &sfd);
3500
3501                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3502                                                 // their connection class.
3503                                                 if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
3504                                                 {
3505                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3506                                                         kill_link(count2->second,"Registration timeout");
3507                                                         goto label;
3508                                                 }
3509                                                 if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3510                                                 {
3511                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3512                                                         {
3513                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3514                                                                 kill_link(count2->second,"Ping timeout");
3515                                                                 goto label;
3516                                                         }
3517                                                         Write(count2->second->fd,"PING :%s",ServerName);
3518                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3519                                                         count2->second->lastping = 0;
3520                                                         count2->second->nping = time(NULL)+120;
3521                                                 }
3522                                         }
3523                                         count2++;
3524                                         total_in_this_set++;
3525                                 }
3526                                 else break;
3527                         }
3528
3529                         endingiter = count2;
3530                         count2 = xcount; // roll back to where we were
3531
3532                         int v = 0;
3533
3534                         tval.tv_usec = 0;
3535                         tval.tv_sec = 0;
3536                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3537
3538                         // now loop through all of the items in this pool if any are waiting
3539                         //if (selectResult2 > 0)
3540                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3541                         {
3542
3543 #ifdef _POSIX_PRIORITY_SCHEDULING
3544                                 sched_yield();
3545 #endif
3546
3547                                 result = EAGAIN;
3548                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3549                                 {
3550                                         log(DEBUG,"Reading fd %d",count2a->second->fd);
3551                                         memset(data, 0, 10240);
3552                                         result = read(count2a->second->fd, data, 10240);
3553
3554                                         if (result)
3555                                         {
3556                                                 if (result > 0)
3557                                                         log(DEBUG,"Read %d characters from socket",result);
3558                                                 userrec* current = count2a->second;
3559                                                 int currfd = current->fd;
3560                                                 char* l = strtok(data,"\n");
3561                                                 int floodlines = 0;
3562                                                 while (l)
3563                                                 {
3564                                                         floodlines++;
3565                                                         if ((floodlines > current->flood) && (current->flood != 0))
3566                                                         {
3567                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3568                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3569                                                                 kill_link(current,"Excess flood");
3570                                                                 goto label;
3571                                                         }
3572                                                         char sanitized[NetBufferSize];
3573                                                         memset(sanitized, 0, NetBufferSize);
3574                                                         int ptt = 0;
3575                                                         for (int pt = 0; pt < strlen(l); pt++)
3576                                                         {
3577                                                                 if (l[pt] != '\r')
3578                                                                 {
3579                                                                         sanitized[ptt++] = l[pt];
3580                                                                 }
3581                                                         }
3582                                                         sanitized[ptt] = '\0';
3583                                                         if (strlen(sanitized))
3584                                                         {
3585
3586
3587                                                                 // we're gonna re-scan to check if the nick is gone, after every
3588                                                                 // command - if it has, we're gonna bail
3589                                                                 bool find_again = false;
3590                                                                 process_buffer(sanitized,current);
3591
3592                                                                 // look for the user's record in case it's changed
3593                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3594                                                                 {
3595                                                                         if (c2->second->fd == currfd)
3596                                                                         {
3597                                                                                 // found again, update pointer
3598                                                                                 current == c2->second;
3599                                                                                 find_again = true;
3600                                                                                 break;
3601                                                                         }
3602                                                                 }
3603                                                                 if (!find_again)
3604                                                                         goto label;
3605
3606                                                         }
3607                                                         l = strtok(NULL,"\n");
3608                                                 }
3609                                                 goto label;
3610                                         }
3611
3612                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
3613                                         {
3614                                                 log(DEBUG,"killing: %s",count2a->second->nick);
3615                                                 kill_link(count2a->second,strerror(errno));
3616                                                 goto label;
3617                                         }
3618                                 }
3619                                 // result EAGAIN means nothing read
3620                                 if (result == EAGAIN)
3621                                 {
3622                                 }
3623                                 else
3624                                 if (result == 0)
3625                                 {
3626                                         if (count2->second)
3627                                         {
3628                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
3629                                                 kill_link(count2a->second,"Client exited");
3630                                                 // must bail here? kill_link removes the hash, corrupting the iterator
3631                                                 log(DEBUG,"Bailing from client exit");
3632                                                 goto label;
3633                                         }
3634                                 }
3635                                 else if (result > 0)
3636                                 {
3637                                 }
3638                         }
3639                 }
3640                 for (int q = 0; q < total_in_this_set; q++)
3641                 {
3642                         // there is no iterator += operator :(
3643                         //if (count2 != clientlist.end())
3644                         //{
3645                                 count2++;
3646                         //}
3647                 }
3648         }
3649
3650         // set up select call
3651         for (count = 0; count < boundPortCount; count++)
3652         {
3653                 FD_SET (openSockfd[count], &selectFds);
3654         }
3655
3656         tv.tv_usec = 1;
3657         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
3658
3659         /* select is reporting a waiting socket. Poll them all to find out which */
3660         if (selectResult > 0)
3661         {
3662                 char target[MAXBUF], resolved[MAXBUF];
3663                 for (count = 0; count < boundPortCount; count++)
3664                 {
3665                         if (FD_ISSET (openSockfd[count], &selectFds))
3666                         {
3667                                 length = sizeof (client);
3668                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
3669
3670                                 address_cache::iterator iter = IP.find(client.sin_addr);
3671                                 bool iscached = false;
3672                                 if (iter == IP.end())
3673                                 {
3674                                         /* ip isn't in cache, add it */
3675                                         strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
3676                                         if(CleanAndResolve(resolved, target) != TRUE)
3677                                         {
3678                                                 strlcpy(resolved,target,MAXBUF);
3679                                         }
3680                                         /* hostname now in 'target' */
3681                                         IP[client.sin_addr] = new string(resolved);
3682                                         /* hostname in cache */
3683                                 }
3684                                 else
3685                                 {
3686                                         /* found ip (cached) */
3687                                         strlcpy(resolved, iter->second->c_str(), MAXBUF);
3688                                         iscached = true;
3689                                 }
3690
3691                                 if (incomingSockfd < 0)
3692                                 {
3693                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
3694                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
3695                                 }
3696                                 else
3697                                 {
3698                                         AddClient(incomingSockfd, resolved, ports[count], iscached, inet_ntoa (client.sin_addr));
3699                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
3700                                 }
3701                                 goto label;
3702                         }
3703                 }
3704         }
3705         label:
3706         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
3707 }
3708 /* not reached */
3709 close (incomingSockfd);
3710 }
3711