src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd.h"
  22 #include "inspircd_io.h"
  23 #include "inspircd_util.h"
  24 #include "inspircd_config.h"
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/errno.h>
  28 #include <sys/ioctl.h>
  29 #include <sys/utsname.h>
  30 #include <cstdio>
  31 #include <time.h>
  32 #include <string>
  33 #ifdef GCC3
  34 #include <ext/hash_map>
  35 #else
  36 #include <hash_map>
  37 #endif
  38 #include <map>
  39 #include <sstream>
  40 #include <vector>
  41 #include <errno.h>
  42 #include <deque>
  43 #include <errno.h>
  44 #include <unistd.h>
  45 #include <sched.h>
  46 #include "connection.h"
  47 #include "users.h"
  48 #include "servers.h"
  49 #include "ctables.h"
  50 #include "globals.h"
  51 #include "modules.h"
  52 #include "dynamic.h"
  53 #include "wildcard.h"
  54 #include "message.h"
  55 #include "mode.h"
  56 #include "commands.h"
  57 #include "xline.h"
  58 #include "inspstring.h"
  59 #include "dnsqueue.h"
  60
  61 #ifdef GCC3
  62 #define nspace __gnu_cxx
  63 #else
  64 #define nspace std
  65 #endif
  66
  67 int LogLevel = DEFAULT;
  68 char ServerName[MAXBUF];
  69 char Network[MAXBUF];
  70 char ServerDesc[MAXBUF];
  71 char AdminName[MAXBUF];
  72 char AdminEmail[MAXBUF];
  73 char AdminNick[MAXBUF];
  74 char diepass[MAXBUF];
  75 char restartpass[MAXBUF];
  76 char motd[MAXBUF];
  77 char rules[MAXBUF];
  78 char list[MAXBUF];
  79 char PrefixQuit[MAXBUF];
  80 char DieValue[MAXBUF];
  81 char DNSServer[MAXBUF];
  82 int debugging =  0;
  83 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  84 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  85 int DieDelay  =  5;
  86 time_t startup_time = time(NULL);
  87 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  88 extern int MaxWhoResults;
  89 time_t nb_start = 0;
  90 int dns_timeout = 5;
  91
  92 bool AllowHalfop = true;
  93 bool AllowProtect = true;
  94 bool AllowFounder = true;
  95
  96 extern std::vector<Module*> modules;
  97 std::vector<std::string> module_names;
  98 extern std::vector<ircd_module*> factory;
  99 std::vector<int> fd_reap;
 100
 101 extern int MODCOUNT;
 102 int openSockfd[MAXSOCKS];
 103 bool nofork = false;
 104
 105 namespace nspace
 106 {
 107 #ifdef GCC34
 108         template<> struct hash<in_addr>
 109 #else
 110         template<> struct nspace::hash<in_addr>
 111 #endif
 112         {
 113                 size_t operator()(const struct in_addr &a) const
 114                 {
 115                         size_t q;
 116                         memcpy(&q,&a,sizeof(size_t));
 117                         return q;
 118                 }
 119         };
 120 #ifdef GCC34
 121         template<> struct hash<string>
 122 #else
 123         template<> struct nspace::hash<string>
 124 #endif
 125         {
 126                 size_t operator()(const string &s) const
 127                 {
 128                         char a[MAXBUF];
 129                         static struct hash<const char *> strhash;
 130                         strlcpy(a,s.c_str(),MAXBUF);
 131                         strlower(a);
 132                         return strhash(a);
 133                 }
 134         };
 135 }
 136
 137
 138 struct StrHashComp
 139 {
 140
 141         bool operator()(const string& s1, const string& s2) const
 142         {
 143                 char a[MAXBUF],b[MAXBUF];
 144                 strlcpy(a,s1.c_str(),MAXBUF);
 145                 strlcpy(b,s2.c_str(),MAXBUF);
 146                 return (strcasecmp(a,b) == 0);
 147         }
 148
 149 };
 150
 151 struct InAddr_HashComp
 152 {
 153
 154         bool operator()(const in_addr &s1, const in_addr &s2) const
 155         {
 156                 size_t q;
 157                 size_t p;
 158
 159                 memcpy(&q,&s1,sizeof(size_t));
 160                 memcpy(&p,&s2,sizeof(size_t));
 161
 162                 return (q == p);
 163         }
 164
 165 };
 166
 167
 168 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 169 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 170 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 171 typedef std::deque<command_t> command_table;
 172
 173 serverrec* me[32];
 174
 175 FILE *log_file;
 176
 177 user_hash clientlist;
 178 chan_hash chanlist;
 179 user_hash whowas;
 180 command_table cmdlist;
 181 file_cache MOTD;
 182 file_cache RULES;
 183 address_cache IP;
 184
 185 ClassVector Classes;
 186
 187 struct linger linger = { 0 };
 188 char MyExecutable[1024];
 189 int boundPortCount = 0;
 190 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 191 int defaultRoute = 0;
 192
 193 connection C;
 194
 195 long MyKey = C.GenKey();
 196
 197 /* prototypes */
 198
 199 int has_channel(userrec *u, chanrec *c);
 200 int usercount(chanrec *c);
 201 int usercount_i(chanrec *c);
 202 char* Passwd(userrec *user);
 203 bool IsDenied(userrec *user);
 204 void AddWhoWas(userrec* u);
 205
 206 std::vector<long> auth_cookies;
 207 std::stringstream config_f(stringstream::in | stringstream::out);
 208
 209
 210
 211 long GetRevision()
 212 {
 213         char Revision[] = "$Revision$";
 214         char *s1 = Revision;
 215         char *savept;
 216         char *v1 = strtok_r(s1," ",&savept);
 217         s1 = savept;
 218         char *v2 = strtok_r(s1," ",&savept);
 219         s1 = savept;
 220         return (long)(atof(v2)*10000);
 221 }
 222
 223
 224 std::string getservername()
 225 {
 226         return ServerName;
 227 }
 228
 229 std::string getserverdesc()
 230 {
 231         return ServerDesc;
 232 }
 233
 234 std::string getnetworkname()
 235 {
 236         return Network;
 237 }
 238
 239 std::string getadminname()
 240 {
 241         return AdminName;
 242 }
 243
 244 std::string getadminemail()
 245 {
 246         return AdminEmail;
 247 }
 248
 249 std::string getadminnick()
 250 {
 251         return AdminNick;
 252 }
 253
 254 void log(int level,char *text, ...)
 255 {
 256         char textbuffer[MAXBUF];
 257         va_list argsPtr;
 258         time_t rawtime;
 259         struct tm * timeinfo;
 260         if (level < LogLevel)
 261                 return;
 262
 263         time(&rawtime);
 264         timeinfo = localtime (&rawtime);
 265
 266         if (log_file)
 267         {
 268                 char b[MAXBUF];
 269                 va_start (argsPtr, text);
 270                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 271                 va_end(argsPtr);
 272                 strlcpy(b,asctime(timeinfo),MAXBUF);
 273                 b[strlen(b)-1] = ':';
 274                 fprintf(log_file,"%s %s\n",b,textbuffer);
 275                 if (nofork)
 276                 {
 277                         // nofork enabled? display it on terminal too
 278                         printf("%s %s\n",b,textbuffer);
 279                 }
 280         }
 281 }
 282
 283 void readfile(file_cache &F, const char* fname)
 284 {
 285         FILE* file;
 286         char linebuf[MAXBUF];
 287
 288         log(DEBUG,"readfile: loading %s",fname);
 289         F.clear();
 290         file =  fopen(fname,"r");
 291         if (file)
 292         {
 293                 while (!feof(file))
 294                 {
 295                         fgets(linebuf,sizeof(linebuf),file);
 296                         linebuf[strlen(linebuf)-1]='\0';
 297                         if (!strcmp(linebuf,""))
 298                         {
 299                                 strcpy(linebuf,"  ");
 300                         }
 301                         if (!feof(file))
 302                         {
 303                                 F.push_back(linebuf);
 304                         }
 305                 }
 306                 fclose(file);
 307         }
 308         else
 309         {
 310                 log(DEBUG,"readfile: failed to load file: %s",fname);
 311         }
 312         log(DEBUG,"readfile: loaded %s, %d lines",fname,F.size());
 313 }
 314
 315 void ReadConfig(bool bail, userrec* user)
 316 {
 317         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 318         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF];
 319         ConnectClass c;
 320         std::stringstream errstr;
 321
 322         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 323         {
 324                 errstr.seekg(0);
 325                 if (bail)
 326                 {
 327                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 328                         exit(0);
 329                 }
 330                 else
 331                 {
 332                         char dataline[1024];
 333                         if (user)
 334                         {
 335                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 336                                 while (!errstr.eof())
 337                                 {
 338                                         errstr.getline(dataline,1024);
 339                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 340                                 }
 341                         }
 342                         else
 343                         {
 344                                 WriteOpers("There were errors in the configuration file:",user->nick);
 345                                 while (!errstr.eof())
 346                                 {
 347                                         errstr.getline(dataline,1024);
 348                                         WriteOpers(dataline);
 349                                 }
 350                         }
 351                         return;
 352                 }
 353         }
 354
 355         ConfValue("server","name",0,ServerName,&config_f);
 356         ConfValue("server","description",0,ServerDesc,&config_f);
 357         ConfValue("server","network",0,Network,&config_f);
 358         ConfValue("admin","name",0,AdminName,&config_f);
 359         ConfValue("admin","email",0,AdminEmail,&config_f);
 360         ConfValue("admin","nick",0,AdminNick,&config_f);
 361         ConfValue("files","motd",0,motd,&config_f);
 362         ConfValue("files","rules",0,rules,&config_f);
 363         ConfValue("power","diepass",0,diepass,&config_f);
 364         ConfValue("power","pause",0,pauseval,&config_f);
 365         ConfValue("power","restartpass",0,restartpass,&config_f);
 366         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 367         ConfValue("die","value",0,DieValue,&config_f);
 368         ConfValue("options","loglevel",0,dbg,&config_f);
 369         ConfValue("options","netbuffersize",0,NB,&config_f);
 370         ConfValue("options","maxwho",0,MW,&config_f);
 371         ConfValue("options","allowhalfop",0,AH,&config_f);
 372         ConfValue("options","allowprotect",0,AP,&config_f);
 373         ConfValue("options","allowfounder",0,AF,&config_f);
 374         ConfValue("dns","server",0,DNSServer,&config_f);
 375         ConfValue("dns","timeout",0,DNT,&config_f);
 376         NetBufferSize = atoi(NB);
 377         MaxWhoResults = atoi(MW);
 378         dns_timeout = atoi(DNT);
 379         if (!dns_timeout)
 380                 dns_timeout = 5;
 381         if (!strcmp(DNSServer,""))
 382                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 383         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 384         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 385         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 386         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 387         {
 388                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 389                 NetBufferSize = 10240;
 390         }
 391         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 392         {
 393                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 394                 MaxWhoResults = 128;
 395         }
 396         if (!strcmp(dbg,"debug"))
 397                 LogLevel = DEBUG;
 398         if (!strcmp(dbg,"verbose"))
 399                 LogLevel = VERBOSE;
 400         if (!strcmp(dbg,"default"))
 401                 LogLevel = DEFAULT;
 402         if (!strcmp(dbg,"sparse"))
 403                 LogLevel = SPARSE;
 404         if (!strcmp(dbg,"none"))
 405                 LogLevel = NONE;
 406         readfile(MOTD,motd);
 407         log(DEFAULT,"Reading message of the day...");
 408         readfile(RULES,rules);
 409         log(DEFAULT,"Reading connect classes...");
 410         Classes.clear();
 411         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 412         {
 413                 strcpy(Value,"");
 414                 ConfValue("connect","allow",i,Value,&config_f);
 415                 ConfValue("connect","timeout",i,timeout,&config_f);
 416                 ConfValue("connect","flood",i,flood,&config_f);
 417                 if (strcmp(Value,""))
 418                 {
 419                         strlcpy(c.host,Value,MAXBUF);
 420                         c.type = CC_ALLOW;
 421                         strlcpy(Value,"",MAXBUF);
 422                         ConfValue("connect","password",i,Value,&config_f);
 423                         strlcpy(c.pass,Value,MAXBUF);
 424                         c.registration_timeout = 90; // default is 2 minutes
 425                         c.flood = atoi(flood);
 426                         if (atoi(timeout)>0)
 427                         {
 428                                 c.registration_timeout = atoi(timeout);
 429                         }
 430                         Classes.push_back(c);
 431                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood);
 432                 }
 433                 else
 434                 {
 435                         ConfValue("connect","deny",i,Value,&config_f);
 436                         strlcpy(c.host,Value,MAXBUF);
 437                         c.type = CC_DENY;
 438                         Classes.push_back(c);
 439                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 440                 }
 441
 442         }
 443         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 444         read_xline_defaults();
 445         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 446         apply_lines();
 447         log(DEFAULT,"Done reading configuration file, InspIRCd is now running.");
 448 }
 449
 450 /* write formatted text to a socket, in same format as printf */
 451
 452 void Write(int sock,char *text, ...)
 453 {
 454         if (!text)
 455         {
 456                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 457                 return;
 458         }
 459         char textbuffer[MAXBUF];
 460         va_list argsPtr;
 461         char tb[MAXBUF];
 462
 463         va_start (argsPtr, text);
 464         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 465         va_end(argsPtr);
 466         snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 467         chop(tb);
 468         if (sock != -1)
 469         {
 470                 write(sock,tb,strlen(tb));
 471         }
 472 }
 473
 474 /* write a server formatted numeric response to a single socket */
 475
 476 void WriteServ(int sock, char* text, ...)
 477 {
 478         if (!text)
 479         {
 480                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 481                 return;
 482         }
 483         char textbuffer[MAXBUF],tb[MAXBUF];
 484         va_list argsPtr;
 485         va_start (argsPtr, text);
 486
 487         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 488         va_end(argsPtr);
 489         snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 490         chop(tb);
 491         if (sock != -1)
 492         {
 493                 write(sock,tb,strlen(tb));
 494         }
 495 }
 496
 497 /* write text from an originating user to originating user */
 498
 499 void WriteFrom(int sock, userrec *user,char* text, ...)
 500 {
 501         if ((!text) || (!user))
 502         {
 503                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 504                 return;
 505         }
 506         char textbuffer[MAXBUF],tb[MAXBUF];
 507         va_list argsPtr;
 508         va_start (argsPtr, text);
 509
 510         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 511         va_end(argsPtr);
 512         snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 513         chop(tb);
 514         if (sock != -1)
 515         {
 516                 write(sock,tb,strlen(tb));
 517         }
 518 }
 519
 520 /* write text to an destination user from a source user (e.g. user privmsg) */
 521
 522 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 523 {
 524         if ((!dest) || (!data))
 525         {
 526                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 527                 return;
 528         }
 529         char textbuffer[MAXBUF],tb[MAXBUF];
 530         va_list argsPtr;
 531         va_start (argsPtr, data);
 532         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 533         va_end(argsPtr);
 534         chop(tb);
 535
 536         // if no source given send it from the server.
 537         if (!source)
 538         {
 539                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 540         }
 541         else
 542         {
 543                 WriteFrom(dest->fd,source,"%s",textbuffer);
 544         }
 545 }
 546
 547 /* write formatted text from a source user to all users on a channel
 548  * including the sender (NOT for privmsg, notice etc!) */
 549
 550 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 551 {
 552         if ((!Ptr) || (!user) || (!text))
 553         {
 554                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 555                 return;
 556         }
 557         char textbuffer[MAXBUF];
 558         va_list argsPtr;
 559         va_start (argsPtr, text);
 560         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 561         va_end(argsPtr);
 562         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 563         {
 564                 if (has_channel(i->second,Ptr))
 565                 {
 566                         WriteTo(user,i->second,"%s",textbuffer);
 567                 }
 568         }
 569 }
 570
 571 /* write formatted text from a source user to all users on a channel
 572  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 573  * users on remote servers */
 574
 575 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 576 {
 577         if ((!Ptr) || (!text))
 578         {
 579                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 580                 return;
 581         }
 582         char textbuffer[MAXBUF];
 583         va_list argsPtr;
 584         va_start (argsPtr, text);
 585         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 586         va_end(argsPtr);
 587         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 588         {
 589                 if (has_channel(i->second,Ptr))
 590                 {
 591                         if (i->second->fd != -1)
 592                         {
 593                                 if (!user)
 594                                 {
 595                                         WriteServ(i->second->fd,"%s",textbuffer);
 596                                 }
 597                                 else
 598                                 {
 599                                         WriteTo(user,i->second,"%s",textbuffer);
 600                                 }
 601                         }
 602                 }
 603         }
 604 }
 605
 606
 607 void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
 608 {
 609         if ((!Ptr) || (!user) || (!text))
 610         {
 611                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 612                 return;
 613         }
 614         char textbuffer[MAXBUF];
 615         va_list argsPtr;
 616         va_start (argsPtr, text);
 617         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 618         va_end(argsPtr);
 619         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 620         {
 621                 if (i->second)
 622                 {
 623                         if (has_channel(i->second,Ptr))
 624                         {
 625                                 WriteServ(i->second->fd,"%s",textbuffer);
 626                         }
 627                 }
 628         }
 629 }
 630
 631
 632 /* write formatted text from a source user to all users on a channel except
 633  * for the sender (for privmsg etc) */
 634
 635 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 636 {
 637         if ((!Ptr) || (!user) || (!text))
 638         {
 639                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 640                 return;
 641         }
 642         char textbuffer[MAXBUF];
 643         va_list argsPtr;
 644         va_start (argsPtr, text);
 645         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 646         va_end(argsPtr);
 647
 648         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 649         {
 650                 if (i->second)
 651                 {
 652                         if (has_channel(i->second,Ptr) && (user != i->second))
 653                         {
 654                                 WriteTo(user,i->second,"%s",textbuffer);
 655                         }
 656                 }
 657         }
 658 }
 659
 660
 661 std::string GetServerDescription(char* servername)
 662 {
 663         for (int j = 0; j < 32; j++)
 664         {
 665                 if (me[j] != NULL)
 666                 {
 667                         for (int k = 0; k < me[j]->connectors.size(); k++)
 668                         {
 669                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 670                                 {
 671                                         return me[j]->connectors[k].GetDescription();
 672                                 }
 673                         }
 674                 }
 675                 return ServerDesc; // not a remote server that can be found, it must be me.
 676         }
 677 }
 678
 679
 680 /* write a formatted string to all users who share at least one common
 681  * channel, including the source user e.g. for use in NICK */
 682
 683 void WriteCommon(userrec *u, char* text, ...)
 684 {
 685         if (!u)
 686         {
 687                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 688                 return;
 689         }
 690
 691         if (u->registered != 7) {
 692                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 693                 return;
 694         }
 695
 696         char textbuffer[MAXBUF];
 697         va_list argsPtr;
 698         va_start (argsPtr, text);
 699         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 700         va_end(argsPtr);
 701
 702         WriteFrom(u->fd,u,"%s",textbuffer);
 703
 704         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 705         {
 706                 if (i->second)
 707                 {
 708                         if (common_channels(u,i->second) && (i->second != u))
 709                         {
 710                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 711                         }
 712                 }
 713         }
 714 }
 715
 716 /* write a formatted string to all users who share at least one common
 717  * channel, NOT including the source user e.g. for use in QUIT */
 718
 719 void WriteCommonExcept(userrec *u, char* text, ...)
 720 {
 721         if (!u)
 722         {
 723                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 724                 return;
 725         }
 726
 727         if (u->registered != 7) {
 728                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 729                 return;
 730         }
 731
 732         char textbuffer[MAXBUF];
 733         va_list argsPtr;
 734         va_start (argsPtr, text);
 735         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 736         va_end(argsPtr);
 737
 738         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 739         {
 740                 if (i->second)
 741                 {
 742                         if ((common_channels(u,i->second)) && (u != i->second))
 743                         {
 744                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 745                         }
 746                 }
 747         }
 748 }
 749
 750 void WriteOpers(char* text, ...)
 751 {
 752         if (!text)
 753         {
 754                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 755                 return;
 756         }
 757
 758         char textbuffer[MAXBUF];
 759         va_list argsPtr;
 760         va_start (argsPtr, text);
 761         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 762         va_end(argsPtr);
 763
 764         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 765         {
 766                 if (i->second)
 767                 {
 768                         if (strchr(i->second->modes,'o'))
 769                         {
 770                                 if (strchr(i->second->modes,'s'))
 771                                 {
 772                                         // send server notices to all with +s
 773                                         // (TODO: needs SNOMASKs)
 774                                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 775                                 }
 776                         }
 777                 }
 778         }
 779 }
 780
 781 // returns TRUE of any users on channel C occupy server 'servername'.
 782
 783 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 784 {
 785         log(DEBUG,"ChanAnyOnThisServer");
 786         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 787         {
 788                 if (has_channel(i->second,c))
 789                 {
 790                         if (!strcasecmp(i->second->server,servername))
 791                         {
 792                                 return true;
 793                         }
 794                 }
 795         }
 796         return false;
 797 }
 798
 799 // returns true if user 'u' shares any common channels with any users on server 'servername'
 800
 801 bool CommonOnThisServer(userrec* u,const char* servername)
 802 {
 803         log(DEBUG,"ChanAnyOnThisServer");
 804         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 805         {
 806                 if ((common_channels(u,i->second)) && (u != i->second))
 807                 {
 808                         if (!strcasecmp(i->second->server,servername))
 809                         {
 810                                 log(DEBUG,"%s is common to %s sharing with %s",i->second->nick,servername,u->nick);
 811                                 return true;
 812                         }
 813                 }
 814         }
 815         return false;
 816 }
 817
 818
 819 void NetSendToCommon(userrec* u, char* s)
 820 {
 821         char buffer[MAXBUF];
 822         snprintf(buffer,MAXBUF,"%s",s);
 823
 824         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 825
 826         for (int j = 0; j < 32; j++)
 827         {
 828                 if (me[j] != NULL)
 829                 {
 830                         for (int k = 0; k < me[j]->connectors.size(); k++)
 831                         {
 832                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 833                                 {
 834                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 835                                 }
 836                         }
 837                 }
 838         }
 839 }
 840
 841
 842 void NetSendToAll(char* s)
 843 {
 844         char buffer[MAXBUF];
 845         snprintf(buffer,MAXBUF,"%s",s);
 846
 847         log(DEBUG,"NetSendToAll: '%s'",s);
 848
 849         for (int j = 0; j < 32; j++)
 850         {
 851                 if (me[j] != NULL)
 852                 {
 853                         for (int k = 0; k < me[j]->connectors.size(); k++)
 854                         {
 855                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 856                         }
 857                 }
 858         }
 859 }
 860
 861 void NetSendToAllAlive(char* s)
 862 {
 863         char buffer[MAXBUF];
 864         snprintf(buffer,MAXBUF,"%s",s);
 865
 866         log(DEBUG,"NetSendToAllAlive: '%s'",s);
 867
 868         for (int j = 0; j < 32; j++)
 869         {
 870                 if (me[j] != NULL)
 871                 {
 872                         for (int k = 0; k < me[j]->connectors.size(); k++)
 873                         {
 874                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
 875                                 {
 876                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 877                                 }
 878                                 else
 879                                 {
 880                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
 881                                 }
 882                         }
 883                 }
 884         }
 885 }
 886
 887
 888 void NetSendToOne(char* target,char* s)
 889 {
 890         char buffer[MAXBUF];
 891         snprintf(buffer,MAXBUF,"%s",s);
 892
 893         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
 894
 895         for (int j = 0; j < 32; j++)
 896         {
 897                 if (me[j] != NULL)
 898                 {
 899                         for (int k = 0; k < me[j]->connectors.size(); k++)
 900                         {
 901                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
 902                                 {
 903                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 904                                 }
 905                         }
 906                 }
 907         }
 908 }
 909
 910 void NetSendToAllExcept(const char* target,char* s)
 911 {
 912         char buffer[MAXBUF];
 913         snprintf(buffer,MAXBUF,"%s",s);
 914
 915         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
 916
 917         for (int j = 0; j < 32; j++)
 918         {
 919                 if (me[j] != NULL)
 920                 {
 921                         for (int k = 0; k < me[j]->connectors.size(); k++)
 922                         {
 923                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
 924                                 {
 925                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 926                                 }
 927                         }
 928                 }
 929         }
 930 }
 931
 932
 933 void WriteMode(const char* modes, int flags, const char* text, ...)
 934 {
 935         if ((!text) || (!modes) || (!flags))
 936         {
 937                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 938                 return;
 939         }
 940
 941         char textbuffer[MAXBUF];
 942         va_list argsPtr;
 943         va_start (argsPtr, text);
 944         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 945         va_end(argsPtr);
 946
 947         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 948         {
 949                 if (i->second)
 950                 {
 951                         bool send_to_user = false;
 952
 953                         if (flags == WM_AND)
 954                         {
 955                                 send_to_user = true;
 956                                 for (int n = 0; n < strlen(modes); n++)
 957                                 {
 958                                         if (!hasumode(i->second,modes[n]))
 959                                         {
 960                                                 send_to_user = false;
 961                                                 break;
 962                                         }
 963                                 }
 964                         }
 965                         else if (flags == WM_OR)
 966                         {
 967                                 send_to_user = false;
 968                                 for (int n = 0; n < strlen(modes); n++)
 969                                 {
 970                                         if (hasumode(i->second,modes[n]))
 971                                         {
 972                                                 send_to_user = true;
 973                                                 break;
 974                                         }
 975                                 }
 976                         }
 977
 978                         if (send_to_user)
 979                         {
 980                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 981                         }
 982                 }
 983         }
 984 }
 985
 986
 987 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
 988 {
 989         if ((!text) || (!source))
 990         {
 991                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 992                 return;
 993         }
 994
 995         int i = 0;
 996         char textbuffer[MAXBUF];
 997         va_list argsPtr;
 998         va_start (argsPtr, text);
 999         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1000         va_end(argsPtr);
1001
1002         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1003         {
1004                 if (i->second)
1005                 {
1006                         if (strchr(i->second->modes,'w'))
1007                         {
1008                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1009                         }
1010                 }
1011         }
1012
1013         if (!local_only)
1014         {
1015                 char buffer[MAXBUF];
1016                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1017                 NetSendToAll(buffer);
1018         }
1019 }
1020
1021 /* convert a string to lowercase. Note following special circumstances
1022  * taken from RFC 1459. Many "official" server branches still hold to this
1023  * rule so i will too;
1024  *
1025  *  Because of IRC's scandanavian origin, the characters {}| are
1026  *  considered to be the lower case equivalents of the characters []\,
1027  *  respectively. This is a critical issue when determining the
1028  *  equivalence of two nicknames.
1029  */
1030
1031 void strlower(char *n)
1032 {
1033         if (!n)
1034         {
1035                 return;
1036         }
1037         for (int i = 0; i != strlen(n); i++)
1038         {
1039                 n[i] = tolower(n[i]);
1040                 if (n[i] == '[')
1041                         n[i] = '{';
1042                 if (n[i] == ']')
1043                         n[i] = '}';
1044                 if (n[i] == '\\')
1045                         n[i] = '|';
1046         }
1047 }
1048
1049
1050
1051 /* Find a user record by nickname and return a pointer to it */
1052
1053 userrec* Find(std::string nick)
1054 {
1055         user_hash::iterator iter = clientlist.find(nick);
1056
1057         if (iter == clientlist.end())
1058                 /* Couldn't find it */
1059                 return NULL;
1060
1061         return iter->second;
1062 }
1063
1064 /* find a channel record by channel name and return a pointer to it */
1065
1066 chanrec* FindChan(const char* chan)
1067 {
1068         if (!chan)
1069         {
1070                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1071                 return NULL;
1072         }
1073
1074         chan_hash::iterator iter = chanlist.find(chan);
1075
1076         if (iter == chanlist.end())
1077                 /* Couldn't find it */
1078                 return NULL;
1079
1080         return iter->second;
1081 }
1082
1083
1084 long GetMaxBans(char* name)
1085 {
1086         char CM[MAXBUF];
1087         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1088         {
1089                 ConfValue("banlist","chan",count,CM,&config_f);
1090                 if (match(name,CM))
1091                 {
1092                         ConfValue("banlist","limit",count,CM,&config_f);
1093                         return atoi(CM);
1094                 }
1095         }
1096         return 64;
1097 }
1098
1099
1100 void purge_empty_chans(void)
1101 {
1102         int go_again = 1, purge = 0;
1103
1104         while (go_again)
1105         {
1106                 go_again = 0;
1107                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1108                 {
1109                         if (i->second) {
1110                                 if (!usercount(i->second))
1111                                 {
1112                                         /* kill the record */
1113                                         if (i != chanlist.end())
1114                                         {
1115                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1116                                                 if (i->second) delete i->second;
1117                                                 chanlist.erase(i);
1118                                                 go_again = 1;
1119                                                 purge++;
1120                                                 break;
1121                                         }
1122                                 }
1123                                 else
1124                                 {
1125                                         log(DEBUG,"skipped purge for %s",i->second->name);
1126                                 }
1127                         }
1128                 }
1129         }
1130         log(DEBUG,"completed channel purge, killed %d",purge);
1131 }
1132
1133
1134 char scratch[MAXBUF];
1135 char sparam[MAXBUF];
1136
1137 char* chanmodes(chanrec *chan)
1138 {
1139         if (!chan)
1140         {
1141                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1142                 strcpy(scratch,"");
1143                 return scratch;
1144         }
1145
1146         strcpy(scratch,"");
1147         strcpy(sparam,"");
1148         if (chan->noexternal)
1149         {
1150                 strlcat(scratch,"n",MAXMODES);
1151         }
1152         if (chan->topiclock)
1153         {
1154                 strlcat(scratch,"t",MAXMODES);
1155         }
1156         if (strcmp(chan->key,""))
1157         {
1158                 strlcat(scratch,"k",MAXMODES);
1159         }
1160         if (chan->limit)
1161         {
1162                 strlcat(scratch,"l",MAXMODES);
1163         }
1164         if (chan->inviteonly)
1165         {
1166                 strlcat(scratch,"i",MAXMODES);
1167         }
1168         if (chan->moderated)
1169         {
1170                 strlcat(scratch,"m",MAXMODES);
1171         }
1172         if (chan->secret)
1173         {
1174                 strlcat(scratch,"s",MAXMODES);
1175         }
1176         if (chan->c_private)
1177         {
1178                 strlcat(scratch,"p",MAXMODES);
1179         }
1180         if (strcmp(chan->key,""))
1181         {
1182                 strlcat(sparam," ",MAXBUF);
1183                 strlcat(sparam,chan->key,MAXBUF);
1184         }
1185         if (chan->limit)
1186         {
1187                 char foo[24];
1188                 sprintf(foo," %d",chan->limit);
1189                 strlcat(sparam,foo,MAXBUF);
1190         }
1191         if (strlen(chan->custom_modes))
1192         {
1193                 strlcat(scratch,chan->custom_modes,MAXMODES);
1194                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1195                 {
1196                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1197                         if (extparam != "")
1198                         {
1199                                 strlcat(sparam," ",MAXBUF);
1200                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1201                         }
1202                 }
1203         }
1204         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1205         strlcat(scratch,sparam,MAXMODES);
1206         return scratch;
1207 }
1208
1209
1210 /* compile a userlist of a channel into a string, each nick seperated by
1211  * spaces and op, voice etc status shown as @ and + */
1212
1213 void userlist(userrec *user,chanrec *c)
1214 {
1215         if ((!c) || (!user))
1216         {
1217                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1218                 return;
1219         }
1220
1221         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1222         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1223         {
1224                 if (has_channel(i->second,c))
1225                 {
1226                         if (isnick(i->second->nick))
1227                         {
1228                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1229                                 {
1230                                         /* user is +i, and source not on the channel, does not show
1231                                          * nick in NAMES list */
1232                                         continue;
1233                                 }
1234                                 strlcat(list,cmode(i->second,c),MAXBUF);
1235                                 strlcat(list,i->second->nick,MAXBUF);
1236                                 strlcat(list," ",MAXBUF);
1237                                 if (strlen(list)>(480-NICKMAX))
1238                                 {
1239                                         /* list overflowed into
1240                                          * multiple numerics */
1241                                         WriteServ(user->fd,"%s",list);
1242                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1243                                 }
1244                         }
1245                 }
1246         }
1247         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1248         {
1249                 WriteServ(user->fd,"%s",list);
1250         }
1251 }
1252
1253 /* return a count of the users on a specific channel accounting for
1254  * invisible users who won't increase the count. e.g. for /LIST */
1255
1256 int usercount_i(chanrec *c)
1257 {
1258         int i = 0;
1259         int count = 0;
1260
1261         if (!c)
1262         {
1263                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1264                 return 0;
1265         }
1266
1267         strcpy(list,"");
1268         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1269         {
1270                 if (i->second)
1271                 {
1272                         if (has_channel(i->second,c))
1273                         {
1274                                 if (isnick(i->second->nick))
1275                                 {
1276                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1277                                         {
1278                                                 /* user is +i, and source not on the channel, does not show
1279                                                  * nick in NAMES list */
1280                                                 continue;
1281                                         }
1282                                         count++;
1283                                 }
1284                         }
1285                 }
1286         }
1287         log(DEBUG,"usercount_i: %s %d",c->name,count);
1288         return count;
1289 }
1290
1291
1292 int usercount(chanrec *c)
1293 {
1294         int i = 0;
1295         int count = 0;
1296
1297         if (!c)
1298         {
1299                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1300                 return 0;
1301         }
1302
1303         strcpy(list,"");
1304         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1305         {
1306                 if (i->second)
1307                 {
1308                         if (has_channel(i->second,c))
1309                         {
1310                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1311                                 {
1312                                         count++;
1313                                 }
1314                         }
1315                 }
1316         }
1317         log(DEBUG,"usercount: %s %d",c->name,count);
1318         return count;
1319 }
1320
1321
1322 /* add a channel to a user, creating the record for it if needed and linking
1323  * it to the user record */
1324
1325 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1326 {
1327         if ((!user) || (!cn))
1328         {
1329                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1330                 return 0;
1331         }
1332
1333         int i = 0;
1334         chanrec* Ptr;
1335         int created = 0;
1336         char cname[MAXBUF];
1337
1338         strncpy(cname,cn,MAXBUF);
1339
1340         // we MUST declare this wherever we use FOREACH_RESULT
1341         int MOD_RESULT = 0;
1342
1343         if (strlen(cname) > CHANMAX-1)
1344         {
1345                 cname[CHANMAX-1] = '\0';
1346         }
1347
1348         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1349
1350         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1351         {
1352                 return NULL; // already on the channel!
1353         }
1354
1355
1356         if (!FindChan(cname))
1357         {
1358                 int MOD_RESULT = 0;
1359                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1360                 if (MOD_RESULT == 1) {
1361                         return NULL;
1362                 }
1363
1364                 /* create a new one */
1365                 log(DEBUG,"add_channel: creating: %s",cname);
1366                 {
1367                         chanlist[cname] = new chanrec();
1368
1369                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1370                         chanlist[cname]->topiclock = 1;
1371                         chanlist[cname]->noexternal = 1;
1372                         chanlist[cname]->created = time(NULL);
1373                         strcpy(chanlist[cname]->topic, "");
1374                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1375                         chanlist[cname]->topicset = 0;
1376                         Ptr = chanlist[cname];
1377                         log(DEBUG,"add_channel: created: %s",cname);
1378                         /* set created to 2 to indicate user
1379                          * is the first in the channel
1380                          * and should be given ops */
1381                         created = 2;
1382                 }
1383         }
1384         else
1385         {
1386                 /* channel exists, just fish out a pointer to its struct */
1387                 Ptr = FindChan(cname);
1388                 if (Ptr)
1389                 {
1390                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1391
1392                         // the override flag allows us to bypass channel modes
1393                         // and bans (used by servers)
1394                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1395                         {
1396                                 log(DEBUG,"Not overriding...");
1397                                 int MOD_RESULT = 0;
1398                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1399                                 if (MOD_RESULT == 1) {
1400                                         return NULL;
1401                                 }
1402                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1403
1404                                 if (!MOD_RESULT)
1405                                 {
1406                                         log(DEBUG,"add_channel: checking key, invite, etc");
1407                                         if (strcmp(Ptr->key,""))
1408                                         {
1409                                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1410                                                 if (!key)
1411                                                 {
1412                                                         log(DEBUG,"add_channel: no key given in JOIN");
1413                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1414                                                         return NULL;
1415                                                 }
1416                                                 else
1417                                                 {
1418                                                         log(DEBUG,"key at %p is %s",key,key);
1419                                                         if (strcasecmp(key,Ptr->key))
1420                                                         {
1421                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1422                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1423                                                                 return NULL;
1424                                                         }
1425                                                 }
1426                                         }
1427                                         log(DEBUG,"add_channel: no key");
1428
1429                                         if (Ptr->inviteonly)
1430                                         {
1431                                                 log(DEBUG,"add_channel: channel is +i");
1432                                                 if (user->IsInvited(Ptr->name))
1433                                                 {
1434                                                         /* user was invited to channel */
1435                                                         /* there may be an optional channel NOTICE here */
1436                                                 }
1437                                                 else
1438                                                 {
1439                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1440                                                         return NULL;
1441                                                 }
1442                                         }
1443                                         log(DEBUG,"add_channel: channel is not +i");
1444
1445                                         if (Ptr->limit)
1446                                         {
1447                                                 if (usercount(Ptr) == Ptr->limit)
1448                                                 {
1449                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1450                                                         return NULL;
1451                                                 }
1452                                         }
1453
1454                                         log(DEBUG,"add_channel: about to walk banlist");
1455
1456                                         /* check user against the channel banlist */
1457                                         if (Ptr)
1458                                         {
1459                                                 if (Ptr->bans.size())
1460                                                 {
1461                                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1462                                                         {
1463                                                                 if (match(user->GetFullHost(),i->data))
1464                                                                 {
1465                                                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1466                                                                         return NULL;
1467                                                                 }
1468                                                         }
1469                                                 }
1470                                         }
1471
1472                                         log(DEBUG,"add_channel: bans checked");
1473
1474                                 }
1475
1476
1477                                 if ((Ptr) && (user))
1478                                 {
1479                                         user->RemoveInvite(Ptr->name);
1480                                 }
1481
1482                                 log(DEBUG,"add_channel: invites removed");
1483
1484                         }
1485                         else
1486                         {
1487                                 log(DEBUG,"Overridden checks");
1488                         }
1489
1490
1491                 }
1492                 created = 1;
1493         }
1494
1495         log(DEBUG,"Passed channel checks");
1496
1497         for (int i =0; i != MAXCHANS; i++)
1498         {
1499                 log(DEBUG,"Check location %d",i);
1500                 if (user->chans[i].channel == NULL)
1501                 {
1502                         log(DEBUG,"Adding into their channel list at location %d",i);
1503
1504                         if (created == 2)
1505                         {
1506                                 /* first user in is given ops */
1507                                 user->chans[i].uc_modes = UCMODE_OP;
1508                         }
1509                         else
1510                         {
1511                                 user->chans[i].uc_modes = 0;
1512                         }
1513                         user->chans[i].channel = Ptr;
1514                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1515
1516                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1517                         {
1518                                 // use the stamdard J token with no privilages.
1519                                 char buffer[MAXBUF];
1520                                 if (created == 2)
1521                                 {
1522                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1523                                 }
1524                                 else
1525                                 {
1526                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1527                                 }
1528                                 NetSendToAll(buffer);
1529                         }
1530
1531                         log(DEBUG,"Sent JOIN to client");
1532
1533                         if (Ptr->topicset)
1534                         {
1535                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1536                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1537                         }
1538                         userlist(user,Ptr);
1539                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1540                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1541                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1542                         FOREACH_MOD OnUserJoin(user,Ptr);
1543                         return Ptr;
1544                 }
1545         }
1546         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1547         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1548         return NULL;
1549 }
1550
1551 /* remove a channel from a users record, and remove the record from memory
1552  * if the channel has become empty */
1553
1554 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1555 {
1556         if ((!user) || (!cname))
1557         {
1558                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1559                 return NULL;
1560         }
1561
1562         chanrec* Ptr;
1563         int created = 0;
1564
1565         if ((!cname) || (!user))
1566         {
1567                 return NULL;
1568         }
1569
1570         Ptr = FindChan(cname);
1571
1572         if (!Ptr)
1573         {
1574                 return NULL;
1575         }
1576
1577         FOREACH_MOD OnUserPart(user,Ptr);
1578         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1579
1580         for (int i =0; i != MAXCHANS; i++)
1581         {
1582                 /* zap it from the channel list of the user */
1583                 if (user->chans[i].channel == Ptr)
1584                 {
1585                         if (reason)
1586                         {
1587                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1588
1589                                 if (!local)
1590                                 {
1591                                         char buffer[MAXBUF];
1592                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1593                                         NetSendToAll(buffer);
1594                                 }
1595
1596
1597                         }
1598                         else
1599                         {
1600                                 if (!local)
1601                                 {
1602                                         char buffer[MAXBUF];
1603                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1604                                         NetSendToAll(buffer);
1605                                 }
1606
1607                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1608                         }
1609                         user->chans[i].uc_modes = 0;
1610                         user->chans[i].channel = NULL;
1611                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1612                         break;
1613                 }
1614         }
1615
1616         /* if there are no users left on the channel */
1617         if (!usercount(Ptr))
1618         {
1619                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1620
1621                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1622
1623                 /* kill the record */
1624                 if (iter != chanlist.end())
1625                 {
1626                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1627                         if (iter->second) delete iter->second;
1628                         chanlist.erase(iter);
1629                 }
1630         }
1631 }
1632
1633
1634 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1635 {
1636         if ((!src) || (!user) || (!Ptr) || (!reason))
1637         {
1638                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1639                 return;
1640         }
1641
1642         int i = 0;
1643         int created = 0;
1644
1645         if ((!Ptr) || (!user) || (!src))
1646         {
1647                 return;
1648         }
1649
1650         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1651
1652         if (!has_channel(user,Ptr))
1653         {
1654                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1655                 return;
1656         }
1657
1658         int MOD_RESULT = 0;
1659         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1660
1661         if (MOD_RESULT == ACR_DENY)
1662                 return;
1663
1664         if (MOD_RESULT == ACR_DEFAULT)
1665         {
1666                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1667                 {
1668                         if (cstatus(src,Ptr) == STATUS_HOP)
1669                         {
1670                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1671                         }
1672                         else
1673                         {
1674                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1675                         }
1676
1677                         return;
1678                 }
1679         }
1680
1681         for (int i =0; i != MAXCHANS; i++)
1682         {
1683                 /* zap it from the channel list of the user */
1684                 if (user->chans[i].channel)
1685                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1686                 {
1687                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1688                         user->chans[i].uc_modes = 0;
1689                         user->chans[i].channel = NULL;
1690                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1691                         break;
1692                 }
1693         }
1694
1695         /* if there are no users left on the channel */
1696         if (!usercount(Ptr))
1697         {
1698                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1699
1700                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1701
1702                 /* kill the record */
1703                 if (iter != chanlist.end())
1704                 {
1705                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1706                         if (iter->second) delete iter->second;
1707                         chanlist.erase(iter);
1708                 }
1709         }
1710 }
1711
1712
1713
1714
1715 /* This function pokes and hacks at a parameter list like the following:
1716  *
1717  * PART #winbot,#darkgalaxy :m00!
1718  *
1719  * to turn it into a series of individual calls like this:
1720  *
1721  * PART #winbot :m00!
1722  * PART #darkgalaxy :m00!
1723  *
1724  * The seperate calls are sent to a callback function provided by the caller
1725  * (the caller will usually call itself recursively). The callback function
1726  * must be a command handler. Calling this function on a line with no list causes
1727  * no action to be taken. You must provide a starting and ending parameter number
1728  * where the range of the list can be found, useful if you have a terminating
1729  * parameter as above which is actually not part of the list, or parameters
1730  * before the actual list as well. This code is used by many functions which
1731  * can function as "one to list" (see the RFC) */
1732
1733 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1734 {
1735         char plist[MAXBUF];
1736         char *param;
1737         char *pars[32];
1738         char blog[32][MAXBUF];
1739         char blog2[32][MAXBUF];
1740         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1741         char keystr[MAXBUF];
1742         char moo[MAXBUF];
1743
1744         for (int i = 0; i <32; i++)
1745                 strcpy(blog[i],"");
1746
1747         for (int i = 0; i <32; i++)
1748                 strcpy(blog2[i],"");
1749
1750         strcpy(moo,"");
1751         for (int i = 0; i <10; i++)
1752         {
1753                 if (!parameters[i])
1754                 {
1755                         parameters[i] = moo;
1756                 }
1757         }
1758         if (joins)
1759         {
1760                 if (pcnt > 1) /* we have a key to copy */
1761                 {
1762                         strlcpy(keystr,parameters[1],MAXBUF);
1763                 }
1764         }
1765
1766         if (!parameters[start])
1767         {
1768                 return 0;
1769         }
1770         if (!strchr(parameters[start],','))
1771         {
1772                 return 0;
1773         }
1774         strcpy(plist,"");
1775         for (int i = start; i <= end; i++)
1776         {
1777                 if (parameters[i])
1778                 {
1779                         strlcat(plist,parameters[i],MAXBUF);
1780                 }
1781         }
1782
1783         j = 0;
1784         param = plist;
1785
1786         t = strlen(plist);
1787         for (int i = 0; i < t; i++)
1788         {
1789                 if (plist[i] == ',')
1790                 {
1791                         plist[i] = '\0';
1792                         strlcpy(blog[j++],param,MAXBUF);
1793                         param = plist+i+1;
1794                         if (j>20)
1795                         {
1796                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1797                                 return 1;
1798                         }
1799                 }
1800         }
1801         strlcpy(blog[j++],param,MAXBUF);
1802         total = j;
1803
1804         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1805         {
1806                 strcat(keystr,",");
1807         }
1808
1809         if ((joins) && (keystr))
1810         {
1811                 if (strchr(keystr,','))
1812                 {
1813                         j = 0;
1814                         param = keystr;
1815                         t2 = strlen(keystr);
1816                         for (int i = 0; i < t2; i++)
1817                         {
1818                                 if (keystr[i] == ',')
1819                                 {
1820                                         keystr[i] = '\0';
1821                                         strlcpy(blog2[j++],param,MAXBUF);
1822                                         param = keystr+i+1;
1823                                 }
1824                         }
1825                         strlcpy(blog2[j++],param,MAXBUF);
1826                         total2 = j;
1827                 }
1828         }
1829
1830         for (j = 0; j < total; j++)
1831         {
1832                 if (blog[j])
1833                 {
1834                         pars[0] = blog[j];
1835                 }
1836                 for (q = end; q < pcnt-1; q++)
1837                 {
1838                         if (parameters[q+1])
1839                         {
1840                                 pars[q-end+1] = parameters[q+1];
1841                         }
1842                 }
1843                 if ((joins) && (parameters[1]))
1844                 {
1845                         if (pcnt > 1)
1846                         {
1847                                 pars[1] = blog2[j];
1848                         }
1849                         else
1850                         {
1851                                 pars[1] = NULL;
1852                         }
1853                 }
1854                 /* repeatedly call the function with the hacked parameter list */
1855                 if ((joins) && (pcnt > 1))
1856                 {
1857                         if (pars[1])
1858                         {
1859                                 // pars[1] already set up and containing key from blog2[j]
1860                                 fn(pars,2,u);
1861                         }
1862                         else
1863                         {
1864                                 pars[1] = parameters[1];
1865                                 fn(pars,2,u);
1866                         }
1867                 }
1868                 else
1869                 {
1870                         fn(pars,pcnt-(end-start),u);
1871                 }
1872         }
1873
1874         return 1;
1875 }
1876
1877
1878
1879 void kill_link(userrec *user,const char* r)
1880 {
1881         user_hash::iterator iter = clientlist.find(user->nick);
1882
1883         char reason[MAXBUF];
1884
1885         strncpy(reason,r,MAXBUF);
1886
1887         if (strlen(reason)>MAXQUIT)
1888         {
1889                 reason[MAXQUIT-1] = '\0';
1890         }
1891
1892         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1893         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1894         log(DEBUG,"closing fd %d",user->fd);
1895
1896         /* bugfix, cant close() a nonblocking socket (sux!) */
1897         if (user->registered == 7) {
1898                 FOREACH_MOD OnUserQuit(user);
1899                 WriteCommonExcept(user,"QUIT :%s",reason);
1900
1901                 // Q token must go to ALL servers!!!
1902                 char buffer[MAXBUF];
1903                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1904                 NetSendToAll(buffer);
1905         }
1906
1907         /* push the socket on a stack of sockets due to be closed at the next opportunity
1908          * 'Client exited' is an exception to this as it means the client side has already
1909          * closed the socket, we don't need to do it.
1910          */
1911         fd_reap.push_back(user->fd);
1912
1913         bool do_purge = false;
1914
1915         if (user->registered == 7) {
1916                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
1917                 AddWhoWas(user);
1918         }
1919
1920         if (iter != clientlist.end())
1921         {
1922                 log(DEBUG,"deleting user hash value %d",iter->second);
1923                 if ((iter->second) && (user->registered == 7)) {
1924                         if (iter->second) delete iter->second;
1925                 }
1926                 clientlist.erase(iter);
1927         }
1928
1929         if (user->registered == 7) {
1930                 purge_empty_chans();
1931         }
1932         user = NULL;
1933 }
1934
1935 void kill_link_silent(userrec *user,const char* r)
1936 {
1937         user_hash::iterator iter = clientlist.find(user->nick);
1938
1939         char reason[MAXBUF];
1940
1941         strncpy(reason,r,MAXBUF);
1942
1943         if (strlen(reason)>MAXQUIT)
1944         {
1945                 reason[MAXQUIT-1] = '\0';
1946         }
1947
1948         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
1949         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
1950         log(DEBUG,"closing fd %d",user->fd);
1951
1952         /* bugfix, cant close() a nonblocking socket (sux!) */
1953         if (user->registered == 7) {
1954                 FOREACH_MOD OnUserQuit(user);
1955                 WriteCommonExcept(user,"QUIT :%s",reason);
1956
1957                 // Q token must go to ALL servers!!!
1958                 char buffer[MAXBUF];
1959                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
1960                 NetSendToAll(buffer);
1961         }
1962
1963         /* push the socket on a stack of sockets due to be closed at the next opportunity
1964          * 'Client exited' is an exception to this as it means the client side has already
1965          * closed the socket, we don't need to do it.
1966          */
1967         fd_reap.push_back(user->fd);
1968
1969         bool do_purge = false;
1970
1971         if (iter != clientlist.end())
1972         {
1973                 log(DEBUG,"deleting user hash value %d",iter->second);
1974                 if ((iter->second) && (user->registered == 7)) {
1975                         if (iter->second) delete iter->second;
1976                 }
1977                 clientlist.erase(iter);
1978         }
1979
1980         if (user->registered == 7) {
1981                 purge_empty_chans();
1982         }
1983 }
1984
1985
1986
1987 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
1988
1989 char* Passwd(userrec *user)
1990 {
1991         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
1992         {
1993                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
1994                 {
1995                         return i->pass;
1996                 }
1997         }
1998         return "";
1999 }
2000
2001 bool IsDenied(userrec *user)
2002 {
2003         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2004         {
2005                 if (match(user->host,i->host) && (i->type == CC_DENY))
2006                 {
2007                         return true;
2008                 }
2009         }
2010         return false;
2011 }
2012
2013
2014
2015
2016 /* sends out an error notice to all connected clients (not to be used
2017  * lightly!) */
2018
2019 void send_error(char *s)
2020 {
2021         log(DEBUG,"send_error: %s",s);
2022         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2023         {
2024                 if (isnick(i->second->nick))
2025                 {
2026                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2027                 }
2028                 else
2029                 {
2030                         // fix - unregistered connections receive ERROR, not NOTICE
2031                         Write(i->second->fd,"ERROR :%s",s);
2032                 }
2033         }
2034 }
2035
2036 void Error(int status)
2037 {
2038         signal (SIGALRM, SIG_IGN);
2039         signal (SIGPIPE, SIG_IGN);
2040         signal (SIGTERM, SIG_IGN);
2041         signal (SIGABRT, SIG_IGN);
2042         signal (SIGSEGV, SIG_IGN);
2043         signal (SIGURG, SIG_IGN);
2044         signal (SIGKILL, SIG_IGN);
2045         log(DEBUG,"*** fell down a pothole in the road to perfection ***");
2046         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2047         exit(status);
2048 }
2049
2050
2051 int main(int argc, char **argv)
2052 {
2053         Start();
2054         srand(time(NULL));
2055         log(DEBUG,"*** InspIRCd starting up!");
2056         if (!FileExists(CONFIG_FILE))
2057         {
2058                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2059                 log(DEBUG,"main: no config");
2060                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2061                 Exit(ERROR);
2062         }
2063         if (argc > 1) {
2064                 for (int i = 1; i < argc; i++)
2065                 {
2066                         if (!strcmp(argv[i],"-nofork")) {
2067                                 nofork = true;
2068                         }
2069                         if (!strcmp(argv[i],"-wait")) {
2070                                 sleep(6);
2071                         }
2072                 }
2073         }
2074         strlcpy(MyExecutable,argv[0],MAXBUF);
2075
2076         if (InspIRCd() == ERROR)
2077         {
2078                 log(DEBUG,"main: daemon function bailed");
2079                 printf("ERROR: could not initialise. Shutting down.\n");
2080                 Exit(ERROR);
2081         }
2082         Exit(TRUE);
2083         return 0;
2084 }
2085
2086 template<typename T> inline string ConvToStr(const T &in)
2087 {
2088         stringstream tmp;
2089         if (!(tmp << in)) return string();
2090         return tmp.str();
2091 }
2092
2093 /* re-allocates a nick in the user_hash after they change nicknames,
2094  * returns a pointer to the new user as it may have moved */
2095
2096 userrec* ReHashNick(char* Old, char* New)
2097 {
2098         user_hash::iterator newnick;
2099         user_hash::iterator oldnick = clientlist.find(Old);
2100
2101         log(DEBUG,"ReHashNick: %s %s",Old,New);
2102
2103         if (!strcasecmp(Old,New))
2104         {
2105                 log(DEBUG,"old nick is new nick, skipping");
2106                 return oldnick->second;
2107         }
2108
2109         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2110
2111         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2112
2113         clientlist[New] = new userrec();
2114         clientlist[New] = oldnick->second;
2115         clientlist.erase(oldnick);
2116
2117         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2118
2119         return clientlist[New];
2120 }
2121
2122 /* adds or updates an entry in the whowas list */
2123 void AddWhoWas(userrec* u)
2124 {
2125         user_hash::iterator iter = whowas.find(u->nick);
2126         userrec *a = new userrec();
2127         strlcpy(a->nick,u->nick,NICKMAX);
2128         strlcpy(a->ident,u->ident,64);
2129         strlcpy(a->dhost,u->dhost,256);
2130         strlcpy(a->host,u->host,256);
2131         strlcpy(a->fullname,u->fullname,128);
2132         strlcpy(a->server,u->server,256);
2133         a->signon = u->signon;
2134
2135         /* MAX_WHOWAS:   max number of /WHOWAS items
2136          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2137          *               can be replaced by a newer one
2138          */
2139
2140         if (iter == whowas.end())
2141         {
2142                 if (whowas.size() == WHOWAS_MAX)
2143                 {
2144                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2145                         {
2146                                 // 3600 seconds in an hour ;)
2147                                 if ((i->second->signon)<(time(NULL)-(WHOWAS_STALE*3600)))
2148                                 {
2149                                         if (i->second) delete i->second;
2150                                         i->second = a;
2151                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2152                                         return;
2153                                 }
2154                         }
2155                 }
2156                 else
2157                 {
2158                         log(DEBUG,"added fresh WHOWAS entry");
2159                         whowas[a->nick] = a;
2160                 }
2161         }
2162         else
2163         {
2164                 log(DEBUG,"updated WHOWAS entry");
2165                 if (iter->second) delete iter->second;
2166                 iter->second = a;
2167         }
2168 }
2169
2170
2171 /* add a client connection to the sockets list */
2172 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2173 {
2174         int i;
2175         int blocking = 1;
2176         char resolved[MAXBUF];
2177         string tempnick;
2178         char tn2[MAXBUF];
2179         user_hash::iterator iter;
2180
2181         tempnick = ConvToStr(socket) + "-unknown";
2182         sprintf(tn2,"%d-unknown",socket);
2183
2184         iter = clientlist.find(tempnick);
2185
2186         if (iter != clientlist.end()) return;
2187
2188         /*
2189          * It is OK to access the value here this way since we know
2190          * it exists, we just created it above.
2191          *
2192          * At NO other time should you access a value in a map or a
2193          * hash_map this way.
2194          */
2195         clientlist[tempnick] = new userrec();
2196
2197         NonBlocking(socket);
2198         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2199
2200         clientlist[tempnick]->fd = socket;
2201         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2202         strncpy(clientlist[tempnick]->host, host,160);
2203         strncpy(clientlist[tempnick]->dhost, host,160);
2204         strncpy(clientlist[tempnick]->server, ServerName,256);
2205         strncpy(clientlist[tempnick]->ident, "unknown",9);
2206         clientlist[tempnick]->registered = 0;
2207         clientlist[tempnick]->signon = time(NULL)+dns_timeout;
2208         clientlist[tempnick]->nping = time(NULL)+240+dns_timeout;
2209         clientlist[tempnick]->lastping = 1;
2210         clientlist[tempnick]->port = port;
2211         strncpy(clientlist[tempnick]->ip,ip,32);
2212
2213         // set the registration timeout for this user
2214         unsigned long class_regtimeout = 90;
2215         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2216         {
2217                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2218                 {
2219                         class_regtimeout = (unsigned long)i->registration_timeout;
2220                         break;
2221                 }
2222         }
2223
2224         int class_flood = 0;
2225         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2226         {
2227                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2228                 {
2229                         class_flood = i->flood;
2230                         break;
2231                 }
2232         }
2233
2234         clientlist[tempnick]->timeout = time(NULL)+class_regtimeout;
2235         clientlist[tempnick]->flood = class_flood;
2236
2237         for (int i = 0; i < MAXCHANS; i++)
2238         {
2239                 clientlist[tempnick]->chans[i].channel = NULL;
2240                 clientlist[tempnick]->chans[i].uc_modes = 0;
2241         }
2242
2243         if (clientlist.size() == MAXCLIENTS)
2244                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2245
2246
2247         char* r = matches_zline(ip);
2248         char* e = matches_exception(ip);
2249         if ((r) && (!e))
2250         {
2251                 char reason[MAXBUF];
2252                 snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2253                 kill_link(clientlist[tempnick],reason);
2254         }
2255 }
2256
2257
2258 int usercnt(void)
2259 {
2260         return clientlist.size();
2261 }
2262
2263
2264 int usercount_invisible(void)
2265 {
2266         int c = 0;
2267
2268         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2269         {
2270                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2271         }
2272         return c;
2273 }
2274
2275 int usercount_opers(void)
2276 {
2277         int c = 0;
2278
2279         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2280         {
2281                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2282         }
2283         return c;
2284 }
2285
2286 int usercount_unknown(void)
2287 {
2288         int c = 0;
2289
2290         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2291         {
2292                 if ((i->second->fd) && (i->second->registered != 7))
2293                         c++;
2294         }
2295         return c;
2296 }
2297
2298 long chancount(void)
2299 {
2300         return chanlist.size();
2301 }
2302
2303 long count_servs(void)
2304 {
2305         int c = 0;
2306         //for (int j = 0; j < 255; j++)
2307         //{
2308         //      if (servers[j] != NULL)
2309         //              c++;
2310         //}
2311         return c;
2312 }
2313
2314 long servercount(void)
2315 {
2316         return count_servs()+1;
2317 }
2318
2319 long local_count()
2320 {
2321         int c = 0;
2322         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2323         {
2324                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2325         }
2326         return c;
2327 }
2328
2329
2330 void ShowMOTD(userrec *user)
2331 {
2332         if (!MOTD.size())
2333         {
2334                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2335                 return;
2336         }
2337         WriteServ(user->fd,"375 %s :- %s message of the day",user->nick,ServerName);
2338         for (int i = 0; i != MOTD.size(); i++)
2339         {
2340                                 WriteServ(user->fd,"372 %s :- %s",user->nick,MOTD[i].c_str());
2341         }
2342         WriteServ(user->fd,"376 %s :End of %s message of the day.",user->nick,ServerName);
2343 }
2344
2345 void ShowRULES(userrec *user)
2346 {
2347         if (!RULES.size())
2348         {
2349                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2350                 return;
2351         }
2352         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2353         for (int i = 0; i != RULES.size(); i++)
2354         {
2355                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2356         }
2357         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2358 }
2359
2360 /* shows the message of the day, and any other on-logon stuff */
2361 void FullConnectUser(userrec* user)
2362 {
2363         user->registered = 7;
2364         user->idle_lastmsg = time(NULL);
2365         log(DEBUG,"ConnectUser: %s",user->nick);
2366
2367         if (strcmp(Passwd(user),"") && (!user->haspassed))
2368         {
2369                 kill_link(user,"Invalid password");
2370                 return;
2371         }
2372         if (IsDenied(user))
2373         {
2374                 kill_link(user,"Unauthorised connection");
2375                 return;
2376         }
2377
2378         char match_against[MAXBUF];
2379         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2380         char* e = matches_exception(match_against);
2381         if (!e)
2382         {
2383                 char* r = matches_gline(match_against);
2384                 if (r)
2385                 {
2386                         char reason[MAXBUF];
2387                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2388                         kill_link_silent(user,reason);
2389                         return;
2390                 }
2391                 r = matches_kline(user->host);
2392                 if (r)
2393                 {
2394                         char reason[MAXBUF];
2395                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2396                         kill_link_silent(user,reason);
2397                         return;
2398                 }
2399         }
2400
2401         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2402         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2403         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2404         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2405         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2406         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2407         std::stringstream v;
2408         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2409         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2410         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2411         v << std::string(Network);
2412         std::string data005 = v.str();
2413         FOREACH_MOD On005Numeric(data005);
2414         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2415         // so i'd better split it :)
2416         std::stringstream out(data005);
2417         std::string token = "";
2418         std::string line5 = "";
2419         int token_counter = 0;
2420         while (!out.eof())
2421         {
2422                 out >> token;
2423                 line5 = line5 + token + " ";
2424                 token_counter++;
2425                 if ((token_counter >= 13) || (out.eof() == true))
2426                 {
2427                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2428                         line5 = "";
2429                         token_counter = 0;
2430                 }
2431         }
2432         ShowMOTD(user);
2433         FOREACH_MOD OnUserConnect(user);
2434         WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]",user->port,user->nick,user->ident,user->host,user->ip);
2435
2436         char buffer[MAXBUF];
2437         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);
2438         NetSendToAll(buffer);
2439 }
2440
2441 /* shows the message of the day, and any other on-logon stuff */
2442 void ConnectUser(userrec *user)
2443 {
2444         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2445         if ((user->dns_done) && (user->registered >= 3))
2446         {
2447                 FullConnectUser(user);
2448         }
2449 }
2450
2451 void handle_version(char **parameters, int pcnt, userrec *user)
2452 {
2453         char Revision[] = "$Revision$";
2454
2455         char *s1 = Revision;
2456         char *savept;
2457         char *v1 = strtok_r(s1," ",&savept);
2458         s1 = savept;
2459         char *v2 = strtok_r(s1," ",&savept);
2460         s1 = savept;
2461
2462         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2463 }
2464
2465
2466 // calls a handler function for a command
2467
2468 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2469 {
2470                 for (int i = 0; i < cmdlist.size(); i++)
2471                 {
2472                         if (!strcasecmp(cmdlist[i].command,commandname))
2473                         {
2474                                 if (cmdlist[i].handler_function)
2475                                 {
2476                                         if (pcnt>=cmdlist[i].min_params)
2477                                         {
2478                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2479                                                 {
2480                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2481                                                 }
2482                                         }
2483                                 }
2484                         }
2485                 }
2486 }
2487
2488 void DoSplitEveryone()
2489 {
2490         bool go_again = true;
2491         while (go_again)
2492         {
2493                 go_again = false;
2494                 for (int i = 0; i < 32; i++)
2495                 {
2496                         if (me[i] != NULL)
2497                         {
2498                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2499                                 {
2500                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2501                                         {
2502                                                 j->routes.clear();
2503                                                 j->CloseConnection();
2504                                                 me[i]->connectors.erase(j);
2505                                                 go_again = true;
2506                                                 break;
2507                                         }
2508                                 }
2509                         }
2510                 }
2511         }
2512         log(DEBUG,"Removed server. Will remove clients...");
2513         // iterate through the userlist and remove all users on this server.
2514         // because we're dealing with a mesh, we dont have to deal with anything
2515         // "down-route" from this server (nice huh)
2516         go_again = true;
2517         char reason[MAXBUF];
2518         while (go_again)
2519         {
2520                 go_again = false;
2521                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2522                 {
2523                         if (strcasecmp(u->second->server,ServerName))
2524                         {
2525                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2526                                 kill_link(u->second,reason);
2527                                 go_again = true;
2528                                 break;
2529                         }
2530                 }
2531         }
2532 }
2533
2534
2535
2536 char islast(const char* s)
2537 {
2538         char c = '`';
2539         for (int j = 0; j < 32; j++)
2540         {
2541                 if (me[j] != NULL)
2542                 {
2543                         for (int k = 0; k < me[j]->connectors.size(); k++)
2544                         {
2545                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2546                                 {
2547                                         c = '|';
2548                                 }
2549                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2550                                 {
2551                                         c = '`';
2552                                 }
2553                         }
2554                 }
2555         }
2556         return c;
2557 }
2558
2559 long map_count(const char* s)
2560 {
2561         int c = 0;
2562         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2563         {
2564                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2565         }
2566         return c;
2567 }
2568
2569
2570 void force_nickchange(userrec* user,const char* newnick)
2571 {
2572         char nick[MAXBUF];
2573         int MOD_RESULT = 0;
2574
2575         strcpy(nick,"");
2576
2577         FOREACH_RESULT(OnUserPreNick(user,newnick));
2578         if (MOD_RESULT) {
2579                 kill_link(user,"Nickname collision");
2580                 return;
2581         }
2582         if (matches_qline(newnick))
2583         {
2584                 kill_link(user,"Nickname collision");
2585                 return;
2586         }
2587
2588         if (user)
2589         {
2590                 if (newnick)
2591                 {
2592                         strncpy(nick,newnick,MAXBUF);
2593                 }
2594                 if (user->registered == 7)
2595                 {
2596                         char* pars[1];
2597                         pars[0] = nick;
2598                         handle_nick(pars,1,user);
2599                 }
2600         }
2601 }
2602
2603
2604 int process_parameters(char **command_p,char *parameters)
2605 {
2606         int i = 0;
2607         int j = 0;
2608         int q = 0;
2609         q = strlen(parameters);
2610         if (!q)
2611         {
2612                 /* no parameters, command_p invalid! */
2613                 return 0;
2614         }
2615         if (parameters[0] == ':')
2616         {
2617                 command_p[0] = parameters+1;
2618                 return 1;
2619         }
2620         if (q)
2621         {
2622                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2623                 {
2624                         /* only one parameter */
2625                         command_p[0] = parameters;
2626                         if (parameters[0] == ':')
2627                         {
2628                                 if (strchr(parameters,' ') != NULL)
2629                                 {
2630                                         command_p[0]++;
2631                                 }
2632                         }
2633                         return 1;
2634                 }
2635         }
2636         command_p[j++] = parameters;
2637         for (int i = 0; i <= q; i++)
2638         {
2639                 if (parameters[i] == ' ')
2640                 {
2641                         command_p[j++] = parameters+i+1;
2642                         parameters[i] = '\0';
2643                         if (command_p[j-1][0] == ':')
2644                         {
2645                                 *command_p[j-1]++; /* remove dodgy ":" */
2646                                 break;
2647                                 /* parameter like this marks end of the sequence */
2648                         }
2649                 }
2650         }
2651         return j; /* returns total number of items in the list */
2652 }
2653
2654 void process_command(userrec *user, char* cmd)
2655 {
2656         char *parameters;
2657         char *command;
2658         char *command_p[127];
2659         char p[MAXBUF], temp[MAXBUF];
2660         int i, j, items, cmd_found;
2661
2662         for (int i = 0; i < 127; i++)
2663                 command_p[i] = NULL;
2664
2665         if (!user)
2666         {
2667                 return;
2668         }
2669         if (!cmd)
2670         {
2671                 return;
2672         }
2673         if (!strcmp(cmd,""))
2674         {
2675                 return;
2676         }
2677
2678         int total_params = 0;
2679         if (strlen(cmd)>2)
2680         {
2681                 for (int q = 0; q < strlen(cmd)-1; q++)
2682                 {
2683                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2684                         {
2685                                 total_params++;
2686                                 // found a 'trailing', we dont count them after this.
2687                                 break;
2688                         }
2689                         if (cmd[q] == ' ')
2690                                 total_params++;
2691                 }
2692         }
2693
2694         // another phidjit bug...
2695         if (total_params > 126)
2696         {
2697                 //kill_link(user,"Protocol violation (1)");
2698                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2699                 return;
2700         }
2701
2702         strlcpy(temp,cmd,MAXBUF);
2703
2704         std::string tmp = cmd;
2705         for (int i = 0; i <= MODCOUNT; i++)
2706         {
2707                 std::string oldtmp = tmp;
2708                 modules[i]->OnServerRaw(tmp,true,user);
2709                 if (oldtmp != tmp)
2710                 {
2711                         log(DEBUG,"A Module changed the input string!");
2712                         log(DEBUG,"New string: %s",tmp.c_str());
2713                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2714                         break;
2715                 }
2716         }
2717         strlcpy(cmd,tmp.c_str(),MAXBUF);
2718         strlcpy(temp,cmd,MAXBUF);
2719
2720         if (!strchr(cmd,' '))
2721         {
2722                 /* no parameters, lets skip the formalities and not chop up
2723                  * the string */
2724                 log(DEBUG,"About to preprocess command with no params");
2725                 items = 0;
2726                 command_p[0] = NULL;
2727                 parameters = NULL;
2728                 for (int i = 0; i <= strlen(cmd); i++)
2729                 {
2730                         cmd[i] = toupper(cmd[i]);
2731                 }
2732                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2733                 command = cmd;
2734         }
2735         else
2736         {
2737                 strcpy(cmd,"");
2738                 j = 0;
2739                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2740                 for (int i = 0; i < strlen(temp); i++)
2741                 {
2742                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2743                         {
2744                                 cmd[j++] = temp[i];
2745                                 cmd[j] = 0;
2746                         }
2747                 }
2748                 /* split the full string into a command plus parameters */
2749                 parameters = p;
2750                 strcpy(p," ");
2751                 command = cmd;
2752                 if (strchr(cmd,' '))
2753                 {
2754                         for (int i = 0; i <= strlen(cmd); i++)
2755                         {
2756                                 /* capitalise the command ONLY, leave params intact */
2757                                 cmd[i] = toupper(cmd[i]);
2758                                 /* are we nearly there yet?! :P */
2759                                 if (cmd[i] == ' ')
2760                                 {
2761                                         command = cmd;
2762                                         parameters = cmd+i+1;
2763                                         cmd[i] = '\0';
2764                                         break;
2765                                 }
2766                         }
2767                 }
2768                 else
2769                 {
2770                         for (int i = 0; i <= strlen(cmd); i++)
2771                         {
2772                                 cmd[i] = toupper(cmd[i]);
2773                         }
2774                 }
2775
2776         }
2777         cmd_found = 0;
2778
2779         if (strlen(command)>MAXCOMMAND)
2780         {
2781                 //kill_link(user,"Protocol violation (2)");
2782                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2783                 return;
2784         }
2785
2786         for (int x = 0; x < strlen(command); x++)
2787         {
2788                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2789                 {
2790                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2791                         {
2792                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2793                                 {
2794                                         //kill_link(user,"Protocol violation (3)");
2795                                         WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2796                                         return;
2797                                 }
2798                         }
2799                 }
2800         }
2801
2802         for (int i = 0; i != cmdlist.size(); i++)
2803         {
2804                 if (strcmp(cmdlist[i].command,""))
2805                 {
2806                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2807                         {
2808                                 log(DEBUG,"Found matching command");
2809
2810                                 if (parameters)
2811                                 {
2812                                         if (strcmp(parameters,""))
2813                                         {
2814                                                 items = process_parameters(command_p,parameters);
2815                                         }
2816                                         else
2817                                         {
2818                                                 items = 0;
2819                                                 command_p[0] = NULL;
2820                                         }
2821                                 }
2822                                 else
2823                                 {
2824                                         items = 0;
2825                                         command_p[0] = NULL;
2826                                 }
2827
2828                                 if (user)
2829                                 {
2830                                         log(DEBUG,"Processing command");
2831
2832                                         /* activity resets the ping pending timer */
2833                                         user->nping = time(NULL) + 120;
2834                                         if ((items) < cmdlist[i].min_params)
2835                                         {
2836                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2837                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2838                                                 return;
2839                                         }
2840                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2841                                         {
2842                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2843                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2844                                                 cmd_found = 1;
2845                                                 return;
2846                                         }
2847                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
2848                                         {
2849                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2850                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
2851                                                 cmd_found = 1;
2852                                                 return;
2853                                         }
2854                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2855                                          * deny command! */
2856                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2857                                         {
2858                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2859                                                 {
2860                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2861                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2862                                                         return;
2863                                                 }
2864                                         }
2865                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
2866                                         {
2867                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
2868                                                 if (cmdlist[i].handler_function)
2869                                                 {
2870                                                         /* ikky /stats counters */
2871                                                         if (temp)
2872                                                         {
2873                                                                 if (user)
2874                                                                 {
2875                                                                         user->bytes_in += strlen(temp);
2876                                                                         user->cmds_in++;
2877                                                                         user->bytes_out+=strlen(temp);
2878                                                                         user->cmds_out++;
2879                                                                 }
2880                                                                 cmdlist[i].use_count++;
2881                                                                 cmdlist[i].total_bytes+=strlen(temp);
2882                                                         }
2883
2884                                                         /* WARNING: nothing may come after the
2885                                                          * command handler call, as the handler
2886                                                          * may free the user structure! */
2887
2888                                                         cmdlist[i].handler_function(command_p,items,user);
2889                                                 }
2890                                                 return;
2891                                         }
2892                                         else
2893                                         {
2894                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2895                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
2896                                                 return;
2897                                         }
2898                                 }
2899                                 cmd_found = 1;
2900                         }
2901                 }
2902         }
2903         if ((!cmd_found) && (user))
2904         {
2905                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
2906                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
2907         }
2908 }
2909
2910
2911 void createcommand(char* cmd, handlerfunc f, char flags, int minparams)
2912 {
2913         command_t comm;
2914         /* create the command and push it onto the table */
2915         strlcpy(comm.command,cmd,MAXBUF);
2916         comm.handler_function = f;
2917         comm.flags_needed = flags;
2918         comm.min_params = minparams;
2919         comm.use_count = 0;
2920         comm.total_bytes = 0;
2921         cmdlist.push_back(comm);
2922         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
2923 }
2924
2925 void SetupCommandTable(void)
2926 {
2927         createcommand("USER",handle_user,0,4);
2928         createcommand("NICK",handle_nick,0,1);
2929         createcommand("QUIT",handle_quit,0,0);
2930         createcommand("VERSION",handle_version,0,0);
2931         createcommand("PING",handle_ping,0,1);
2932         createcommand("PONG",handle_pong,0,1);
2933         createcommand("ADMIN",handle_admin,0,0);
2934         createcommand("PRIVMSG",handle_privmsg,0,2);
2935         createcommand("INFO",handle_info,0,0);
2936         createcommand("TIME",handle_time,0,0);
2937         createcommand("WHOIS",handle_whois,0,1);
2938         createcommand("WALLOPS",handle_wallops,'o',1);
2939         createcommand("NOTICE",handle_notice,0,2);
2940         createcommand("JOIN",handle_join,0,1);
2941         createcommand("NAMES",handle_names,0,1);
2942         createcommand("PART",handle_part,0,1);
2943         createcommand("KICK",handle_kick,0,2);
2944         createcommand("MODE",handle_mode,0,1);
2945         createcommand("TOPIC",handle_topic,0,1);
2946         createcommand("WHO",handle_who,0,1);
2947         createcommand("MOTD",handle_motd,0,0);
2948         createcommand("RULES",handle_rules,0,0);
2949         createcommand("OPER",handle_oper,0,2);
2950         createcommand("LIST",handle_list,0,0);
2951         createcommand("DIE",handle_die,'o',1);
2952         createcommand("RESTART",handle_restart,'o',1);
2953         createcommand("KILL",handle_kill,'o',2);
2954         createcommand("REHASH",handle_rehash,'o',0);
2955         createcommand("LUSERS",handle_lusers,0,0);
2956         createcommand("STATS",handle_stats,0,1);
2957         createcommand("USERHOST",handle_userhost,0,1);
2958         createcommand("AWAY",handle_away,0,0);
2959         createcommand("ISON",handle_ison,0,0);
2960         createcommand("SUMMON",handle_summon,0,0);
2961         createcommand("USERS",handle_users,0,0);
2962         createcommand("INVITE",handle_invite,0,2);
2963         createcommand("PASS",handle_pass,0,1);
2964         createcommand("TRACE",handle_trace,'o',0);
2965         createcommand("WHOWAS",handle_whowas,0,1);
2966         createcommand("CONNECT",handle_connect,'o',1);
2967         createcommand("SQUIT",handle_squit,'o',0);
2968         createcommand("MODULES",handle_modules,'o',0);
2969         createcommand("LINKS",handle_links,0,0);
2970         createcommand("MAP",handle_map,0,0);
2971         createcommand("KLINE",handle_kline,'o',1);
2972         createcommand("GLINE",handle_gline,'o',1);
2973         createcommand("ZLINE",handle_zline,'o',1);
2974         createcommand("QLINE",handle_qline,'o',1);
2975         createcommand("ELINE",handle_eline,'o',1);
2976         createcommand("SERVER",handle_server,0,0);
2977 }
2978
2979 void process_buffer(const char* cmdbuf,userrec *user)
2980 {
2981         if (!user)
2982         {
2983                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2984                 return;
2985         }
2986         char cmd[MAXBUF];
2987         int i;
2988         if (!cmdbuf)
2989         {
2990                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
2991                 return;
2992         }
2993         if (!strcmp(cmdbuf,""))
2994         {
2995                 return;
2996         }
2997         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
2998
2999         strlcpy(cmd,cmdbuf,MAXBUF);
3000         if (!strcmp(cmd,""))
3001         {
3002                 return;
3003         }
3004         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3005         {
3006                 cmd[strlen(cmd)-1] = '\0';
3007         }
3008         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3009         {
3010                 cmd[strlen(cmd)-1] = '\0';
3011         }
3012
3013         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
3014         {
3015                 cmd[strlen(cmd)-1] = '\0';
3016         }
3017
3018         if (!strcmp(cmd,""))
3019         {
3020                 return;
3021         }
3022         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
3023         tidystring(cmd);
3024         if ((user) && (cmd))
3025         {
3026                 process_command(user,cmd);
3027         }
3028 }
3029
3030 void DoSync(serverrec* serv, char* tcp_host)
3031 {
3032         char data[MAXBUF];
3033         log(DEBUG,"Sending sync");
3034         // send start of sync marker: Y <timestamp>
3035         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3036         // except the ones its receiving it from.
3037         snprintf(data,MAXBUF,"Y %d",time(NULL));
3038         serv->SendPacket(data,tcp_host);
3039         // send users and channels
3040         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3041         {
3042                 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);
3043                 serv->SendPacket(data,tcp_host);
3044                 if (strchr(u->second->modes,'o'))
3045                 {
3046                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3047                         serv->SendPacket(data,tcp_host);
3048                 }
3049                 for (int i = 0; i <= MODCOUNT; i++)
3050                 {
3051                         string_list l = modules[i]->OnUserSync(u->second);
3052                         for (int j = 0; j < l.size(); j++)
3053                         {
3054                                 strlcpy(data,l[j].c_str(),MAXBUF);
3055                                 serv->SendPacket(data,tcp_host);
3056                         }
3057                 }
3058                 if (strcmp(chlist(u->second),""))
3059                 {
3060                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
3061                         serv->SendPacket(data,tcp_host);
3062                 }
3063         }
3064         // send channel modes, topics etc...
3065         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3066         {
3067                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3068                 serv->SendPacket(data,tcp_host);
3069                 for (int i = 0; i <= MODCOUNT; i++)
3070                 {
3071                         string_list l = modules[i]->OnChannelSync(c->second);
3072                         for (int j = 0; j < l.size(); j++)
3073                         {
3074                                 strlcpy(data,l[j].c_str(),MAXBUF);
3075                                 serv->SendPacket(data,tcp_host);
3076                         }
3077                 }
3078                 if (strcmp(c->second->topic,""))
3079                 {
3080                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3081                         serv->SendPacket(data,tcp_host);
3082                 }
3083                 // send current banlist
3084
3085                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3086                 {
3087                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
3088                         serv->SendPacket(data,tcp_host);
3089                 }
3090         }
3091         // sync global zlines, glines, etc
3092         sync_xlines(serv,tcp_host);
3093
3094         for (int j = 0; j < 32; j++)
3095         {
3096                 if (me[j] != NULL)
3097                 {
3098                         for (int k = 0; k < me[j]->connectors.size(); k++)
3099                         {
3100                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3101                                 {
3102                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3103                                         serv->SendPacket(data,tcp_host);
3104                                         NetSendMyRoutingTable();
3105                                 }
3106                         }
3107                 }
3108         }
3109
3110         snprintf(data,MAXBUF,"F %d",time(NULL));
3111         serv->SendPacket(data,tcp_host);
3112         log(DEBUG,"Sent sync");
3113         // ircd sends its serverlist after the end of sync here
3114 }
3115
3116
3117 void NetSendMyRoutingTable()
3118 {
3119         // send out a line saying what is reachable to us.
3120         // E.g. if A is linked to B C and D, send out:
3121         // $ A B C D
3122         // if its only linked to B and D send out:
3123         // $ A B D
3124         // if it has no links, dont even send out the line at all.
3125         char buffer[MAXBUF];
3126         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3127         bool sendit = false;
3128         for (int i = 0; i < 32; i++)
3129         {
3130                 if (me[i] != NULL)
3131                 {
3132                         for (int j = 0; j < me[i]->connectors.size(); j++)
3133                         {
3134                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3135                                 {
3136                                         strlcat(buffer," ",MAXBUF);
3137                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3138                                         sendit = true;
3139                                 }
3140                         }
3141                 }
3142         }
3143         if (sendit)
3144                 NetSendToAll(buffer);
3145 }
3146
3147
3148 void DoSplit(const char* params)
3149 {
3150         bool go_again = true;
3151         while (go_again)
3152         {
3153                 go_again = false;
3154                 for (int i = 0; i < 32; i++)
3155                 {
3156                         if (me[i] != NULL)
3157                         {
3158                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3159                                 {
3160                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3161                                         {
3162                                                 j->routes.clear();
3163                                                 j->CloseConnection();
3164                                                 me[i]->connectors.erase(j);
3165                                                 go_again = true;
3166                                                 break;
3167                                         }
3168                                 }
3169                         }
3170                 }
3171         }
3172         log(DEBUG,"Removed server. Will remove clients...");
3173         // iterate through the userlist and remove all users on this server.
3174         // because we're dealing with a mesh, we dont have to deal with anything
3175         // "down-route" from this server (nice huh)
3176         go_again = true;
3177         char reason[MAXBUF];
3178         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3179         while (go_again)
3180         {
3181                 go_again = false;
3182                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3183                 {
3184                         if (!strcasecmp(u->second->server,params))
3185                         {
3186                                 kill_link(u->second,reason);
3187                                 go_again = true;
3188                                 break;
3189                         }
3190                 }
3191         }
3192 }
3193
3194 // removes a server. Will NOT remove its users!
3195
3196 void RemoveServer(const char* name)
3197 {
3198         bool go_again = true;
3199         while (go_again)
3200         {
3201                 go_again = false;
3202                 for (int i = 0; i < 32; i++)
3203                 {
3204                         if (me[i] != NULL)
3205                         {
3206                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3207                                 {
3208                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3209                                         {
3210                                                 j->routes.clear();
3211                                                 j->CloseConnection();
3212                                                 me[i]->connectors.erase(j);
3213                                                 go_again = true;
3214                                                 break;
3215                                         }
3216                                 }
3217                         }
3218                 }
3219         }
3220 }
3221
3222
3223 int reap_counter = 0;
3224
3225 int InspIRCd(void)
3226 {
3227         struct sockaddr_in client,server;
3228         char addrs[MAXBUF][255];
3229         int incomingSockfd, result = TRUE;
3230         socklen_t length;
3231         int count = 0;
3232         int selectResult = 0, selectResult2 = 0;
3233         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3234         char resolvedHost[MAXBUF];
3235         fd_set selectFds;
3236         struct timeval tv;
3237
3238         log_file = fopen("ircd.log","a+");
3239         if (!log_file)
3240         {
3241                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3242                 Exit(ERROR);
3243         }
3244
3245         log(DEBUG,"InspIRCd: startup: begin");
3246         log(DEBUG,"$Id$");
3247         if (geteuid() == 0)
3248         {
3249                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3250                 Exit(ERROR);
3251                 log(DEBUG,"InspIRCd: startup: not starting with UID 0!");
3252         }
3253         SetupCommandTable();
3254         log(DEBUG,"InspIRCd: startup: default command table set up");
3255
3256         ReadConfig(true,NULL);
3257         if (strcmp(DieValue,""))
3258         {
3259                 printf("WARNING: %s\n\n",DieValue);
3260                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3261                 exit(0);
3262         }
3263         log(DEBUG,"InspIRCd: startup: read config");
3264
3265         int count2 = 0, count3 = 0;
3266
3267         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3268         {
3269                 ConfValue("bind","port",count,configToken,&config_f);
3270                 ConfValue("bind","address",count,Addr,&config_f);
3271                 ConfValue("bind","type",count,Type,&config_f);
3272                 if (!strcmp(Type,"servers"))
3273                 {
3274                         char Default[MAXBUF];
3275                         strcpy(Default,"no");
3276                         ConfValue("bind","default",count,Default,&config_f);
3277                         if (strchr(Default,'y'))
3278                         {
3279                                 defaultRoute = count3;
3280                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3281                         }
3282                         me[count3] = new serverrec(ServerName,100L,false);
3283                         if (!me[count3]->CreateListener(Addr,atoi(configToken)))
3284                         {
3285                                 log(DEFAULT,"Error! Failed to bind port %d",atoi(configToken));
3286                         }
3287                         else
3288                         {
3289                                 count3++;
3290                         }
3291                 }
3292                 else
3293                 {
3294                         ports[count2] = atoi(configToken);
3295                         strlcpy(addrs[count2],Addr,256);
3296                         count2++;
3297                 }
3298                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3299         }
3300         portCount = count2;
3301         UDPportCount = count3;
3302
3303         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3304
3305         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3306
3307         printf("\n");
3308
3309         /* BugFix By Craig! :p */
3310         count = 0;
3311         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3312         {
3313                 char modfile[MAXBUF];
3314                 ConfValue("module","name",count2,configToken,&config_f);
3315                 snprintf(modfile,MAXBUF,"%s/%s",MOD_PATH,configToken,&config_f);
3316                 printf("Loading module... \033[1;37m%s\033[0;37m\n",modfile);
3317                 log(DEBUG,"InspIRCd: startup: Loading module: %s",modfile);
3318                 /* If The File Doesnt exist, Trying to load it
3319                  * Will Segfault the IRCd.. So, check to see if
3320                  * it Exists, Before Proceeding. */
3321                 if (FileExists(modfile))
3322                 {
3323                         factory[count] = new ircd_module(modfile);
3324                         if (factory[count]->LastError())
3325                         {
3326                                 log(DEBUG,"Unable to load %s: %s",modfile,factory[count]->LastError());
3327                                 printf("Unable to load %s: %s\nExiting...\n",modfile,factory[count]->LastError());
3328                                 Exit(ERROR);
3329                         }
3330                         if (factory[count]->factory)
3331                         {
3332                                 modules[count] = factory[count]->factory->CreateModule();
3333                                 /* save the module and the module's classfactory, if
3334                                  * this isnt done, random crashes can occur :/ */
3335                                 module_names.push_back(modfile);
3336                         }
3337                         else
3338                         {
3339                                 log(DEBUG,"Unable to load %s",modfile);
3340                                 printf("Unable to load %s\nExiting...\n",modfile);
3341                                 Exit(ERROR);
3342                         }
3343                         /* Increase the Count */
3344                         count++;
3345                 }
3346                 else
3347                 {
3348                         log(DEBUG,"InspIRCd: startup: Module Not Found %s",modfile);
3349                         printf("Module Not Found: \033[1;37m%s\033[0;37m, Skipping\n",modfile);
3350                 }
3351         }
3352         MODCOUNT = count - 1;
3353         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3354
3355         printf("\nInspIRCd is now running!\n");
3356
3357         startup_time = time(NULL);
3358
3359         if (nofork)
3360         {
3361                 log(VERBOSE,"Not forking as -nofork was specified");
3362         }
3363         else
3364         {
3365                 if (DaemonSeed() == ERROR)
3366                 {
3367                         log(DEBUG,"InspIRCd: startup: can't daemonise");
3368                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3369                         Exit(ERROR);
3370                 }
3371         }
3372
3373         char PID[MAXBUF];
3374         ConfValue("pid","file",0,PID,&config_f);
3375         WritePID(PID);
3376
3377
3378         /* setup select call */
3379         FD_ZERO(&selectFds);
3380         log(DEBUG,"InspIRCd: startup: zero selects");
3381         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3382
3383         for (count = 0; count < portCount; count++)
3384         {
3385                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3386                 {
3387                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3388                         return(ERROR);
3389                 }
3390                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3391                 {
3392                         log(DEBUG,"InspIRCd: startup: failed to bind port %d",ports[count]);
3393                 }
3394                 else    /* well we at least bound to one socket so we'll continue */
3395                 {
3396                         boundPortCount++;
3397                 }
3398         }
3399
3400         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3401
3402         /* if we didn't bind to anything then abort */
3403         if (boundPortCount == 0)
3404         {
3405                 log(DEBUG,"InspIRCd: startup: no ports bound, bailing!");
3406                 return (ERROR);
3407         }
3408
3409
3410         length = sizeof (client);
3411         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3412
3413         /* main loop, this never returns */
3414         for (;;)
3415         {
3416 #ifdef _POSIX_PRIORITY_SCHEDULING
3417                 sched_yield();
3418 #endif
3419                 // poll dns queue
3420                 dns_poll();
3421
3422                 fd_set sfd;
3423                 timeval tval;
3424                 FD_ZERO(&sfd);
3425
3426                 user_hash::iterator count2 = clientlist.begin();
3427
3428                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3429                 // them in a list, then reap the list every second or so.
3430                 if ((reap_counter % 50) == 0)
3431                 {
3432                         // These functions eat cpu, and should not be done so often!
3433
3434                         // update the status of klines, etc
3435                         expire_lines();
3436 #ifdef _POSIX_PRIORITY_SCHEDULING
3437                         sched_yield();
3438 #endif
3439                 }
3440                 if (reap_counter>300)
3441                 {
3442                         if (fd_reap.size() > 0)
3443                         {
3444                                 for( int n = 0; n < fd_reap.size(); n++)
3445                                 {
3446                                         //Blocking(fd_reap[n]);
3447                                         close(fd_reap[n]);
3448                                         shutdown (fd_reap[n],2);
3449                                         //NonBlocking(fd_reap[n]);
3450                                 }
3451                         }
3452                         fd_reap.clear();
3453                         reap_counter=0;
3454                 }
3455                 reap_counter++;
3456
3457                 fd_set serverfds;
3458                 FD_ZERO(&serverfds);
3459                 timeval tvs;
3460
3461                 for (int x = 0; x != UDPportCount; x++)
3462                 {
3463                         if (me[x])
3464                                 FD_SET(me[x]->fd, &serverfds);
3465                 }
3466
3467                 tvs.tv_usec = 5000;
3468                 tvs.tv_sec = 0;
3469
3470                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3471                 if (servresult > 0)
3472                 {
3473                         for (int x = 0; x != UDPportCount; x++)
3474                         {
3475                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3476                                 {
3477                                         char remotehost[MAXBUF],resolved[MAXBUF];
3478                                         length = sizeof (client);
3479                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3480                                         strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3481                                         if(CleanAndResolve(resolved, remotehost) != TRUE)
3482                                         {
3483                                                 strlcpy(resolved,remotehost,MAXBUF);
3484                                         }
3485                                         // add to this connections ircd_connector vector
3486                                         // *FIX* - we need the LOCAL port not the remote port in &client!
3487                                         me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3488                                 }
3489                         }
3490                 }
3491
3492                 for (int x = 0; x < UDPportCount; x++)
3493                 {
3494                         std::deque<std::string> msgs;
3495                         msgs.clear();
3496                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3497                         {
3498                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3499                                 {
3500                                         char udp_msg[MAXBUF];
3501                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3502                                         if (strlen(udp_msg)<1)
3503                                         {
3504                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3505                                                 break;
3506                                         }
3507                                         // during a netburst, send all data to all other linked servers
3508                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3509                                         {
3510                                                 if (is_uline(tcp_host))
3511                                                 {
3512                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3513                                                         {
3514                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3515                                                         }
3516                                                 }
3517                                                 else
3518                                                         NetSendToAllExcept(tcp_host,udp_msg);
3519                                         }
3520                                         FOREACH_MOD OnPacketReceive(udp_msg);
3521                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3522                                 }
3523                                 goto label;
3524                         }
3525                 }
3526
3527
3528         while (count2 != clientlist.end())
3529         {
3530                 char data[10240];
3531                 tval.tv_usec = 5000;
3532                 tval.tv_sec = 0;
3533                 FD_ZERO(&sfd);
3534                 int total_in_this_set = 0;
3535
3536                 user_hash::iterator xcount = count2;
3537                 user_hash::iterator endingiter = count2;
3538
3539                 if (count2 == clientlist.end()) break;
3540
3541                 if (count2->second)
3542                 if (count2->second->fd != 0)
3543                 {
3544                         // assemble up to 64 sockets into an fd_set
3545                         // to implement a pooling mechanism.
3546                         //
3547                         // This should be up to 64x faster than the
3548                         // old implementation.
3549                         while (total_in_this_set < 64)
3550                         {
3551                                 if (count2 != clientlist.end())
3552                                 {
3553                                         // we don't check the state of remote users.
3554                                         if (count2->second->fd > 0)
3555                                         {
3556                                                 FD_SET (count2->second->fd, &sfd);
3557
3558                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3559                                                 // their connection class.
3560                                                 if ((time(NULL) > count2->second->timeout) && (count2->second->registered != 7))
3561                                                 {
3562                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3563                                                         kill_link(count2->second,"Registration timeout");
3564                                                         goto label;
3565                                                 }
3566                                                 if ((time(NULL) > count2->second->signon) && (count2->second->registered == 3))
3567                                                 {
3568                                                                 count2->second->dns_done = true;
3569                                                                 FullConnectUser(count2->second);
3570                                                                 goto label;
3571                                                 }
3572                                                 if ((count2->second->dns_done) && (count2->second->registered == 3)) // both NICK and USER... and DNS
3573                                                 {
3574                                                         FullConnectUser(count2->second);
3575                                                         goto label;
3576                                                 }
3577                                                 if (((time(NULL)) > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3578                                                 {
3579                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3580                                                         {
3581                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3582                                                                 kill_link(count2->second,"Ping timeout");
3583                                                                 goto label;
3584                                                         }
3585                                                         Write(count2->second->fd,"PING :%s",ServerName);
3586                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3587                                                         count2->second->lastping = 0;
3588                                                         count2->second->nping = time(NULL)+120;
3589                                                 }
3590                                         }
3591                                         count2++;
3592                                         total_in_this_set++;
3593                                 }
3594                                 else break;
3595                         }
3596
3597                         endingiter = count2;
3598                         count2 = xcount; // roll back to where we were
3599
3600                         int v = 0;
3601
3602                         tval.tv_usec = 5000;
3603                         tval.tv_sec = 0;
3604                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3605
3606                         // now loop through all of the items in this pool if any are waiting
3607                         //if (selectResult2 > 0)
3608                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3609                         {
3610
3611 #ifdef _POSIX_PRIORITY_SCHEDULING
3612                                 sched_yield();
3613 #endif
3614
3615                                 result = EAGAIN;
3616                                 if ((count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3617                                 {
3618                                         memset(data, 0, 10240);
3619                                         result = read(count2a->second->fd, data, 10240);
3620
3621                                         if (result)
3622                                         {
3623                                                 userrec* current = count2a->second;
3624                                                 int currfd = current->fd;
3625                                                 char* l = strtok(data,"\n");
3626                                                 int floodlines = 0;
3627                                                 while (l)
3628                                                 {
3629                                                         floodlines++;
3630                                                         if ((floodlines > current->flood) && (current->flood != 0))
3631                                                         {
3632                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3633                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3634                                                                 kill_link(current,"Excess flood");
3635                                                                 goto label;
3636                                                         }
3637                                                         char sanitized[NetBufferSize];
3638                                                         memset(sanitized, 0, NetBufferSize);
3639                                                         int ptt = 0;
3640                                                         for (int pt = 0; pt < strlen(l); pt++)
3641                                                         {
3642                                                                 if (l[pt] != '\r')
3643                                                                 {
3644                                                                         sanitized[ptt++] = l[pt];
3645                                                                 }
3646                                                         }
3647                                                         sanitized[ptt] = '\0';
3648                                                         if (strlen(sanitized))
3649                                                         {
3650
3651
3652                                                                 // we're gonna re-scan to check if the nick is gone, after every
3653                                                                 // command - if it has, we're gonna bail
3654                                                                 bool find_again = false;
3655                                                                 process_buffer(sanitized,current);
3656
3657                                                                 // look for the user's record in case it's changed
3658                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3659                                                                 {
3660                                                                         if (c2->second->fd == currfd)
3661                                                                         {
3662                                                                                 // found again, update pointer
3663                                                                                 current == c2->second;
3664                                                                                 find_again = true;
3665                                                                                 break;
3666                                                                         }
3667                                                                 }
3668                                                                 if (!find_again)
3669                                                                         goto label;
3670
3671                                                         }
3672                                                         l = strtok(NULL,"\n");
3673                                                 }
3674                                                 goto label;
3675                                         }
3676
3677                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
3678                                         {
3679                                                 log(DEBUG,"killing: %s",count2a->second->nick);
3680                                                 kill_link(count2a->second,strerror(errno));
3681                                                 goto label;
3682                                         }
3683                                 }
3684                                 // result EAGAIN means nothing read
3685                                 if (result == EAGAIN)
3686                                 {
3687                                 }
3688                                 else
3689                                 if (result == 0)
3690                                 {
3691                                         if (count2->second)
3692                                         {
3693                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
3694                                                 kill_link(count2a->second,"Client exited");
3695                                                 // must bail here? kill_link removes the hash, corrupting the iterator
3696                                                 log(DEBUG,"Bailing from client exit");
3697                                                 goto label;
3698                                         }
3699                                 }
3700                                 else if (result > 0)
3701                                 {
3702                                 }
3703                         }
3704                 }
3705                 for (int q = 0; q < total_in_this_set; q++)
3706                 {
3707                         // there is no iterator += operator :(
3708                         //if (count2 != clientlist.end())
3709                         //{
3710                                 count2++;
3711                         //}
3712                 }
3713         }
3714
3715         // set up select call
3716         for (count = 0; count < boundPortCount; count++)
3717         {
3718                 FD_SET (openSockfd[count], &selectFds);
3719         }
3720
3721         tv.tv_usec = 5000;
3722         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
3723
3724         /* select is reporting a waiting socket. Poll them all to find out which */
3725         if (selectResult > 0)
3726         {
3727                 char target[MAXBUF], resolved[MAXBUF];
3728                 for (count = 0; count < boundPortCount; count++)
3729                 {
3730                         if (FD_ISSET (openSockfd[count], &selectFds))
3731                         {
3732                                 length = sizeof (client);
3733                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
3734
3735                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
3736                                 strlcpy (resolved, target, MAXBUF);
3737
3738                                 if (incomingSockfd < 0)
3739                                 {
3740                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
3741                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
3742                                 }
3743                                 else
3744                                 {
3745                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
3746                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
3747                                 }
3748                                 goto label;
3749                         }
3750                 }
3751         }
3752         label:
3753         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
3754 }
3755 /* not reached */
3756 close (incomingSockfd);
3757 }
3758