src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd.h"
  22 #include "inspircd_io.h"
  23 #include "inspircd_util.h"
  24 #include "inspircd_config.h"
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/errno.h>
  28 #include <sys/ioctl.h>
  29 #include <sys/utsname.h>
  30 #include <cstdio>
  31 #include <time.h>
  32 #include <string>
  33 #ifdef GCC3
  34 #include <ext/hash_map>
  35 #else
  36 #include <hash_map>
  37 #endif
  38 #include <map>
  39 #include <sstream>
  40 #include <vector>
  41 #include <errno.h>
  42 #include <deque>
  43 #include <errno.h>
  44 #include <unistd.h>
  45 #include <sched.h>
  46 #include "connection.h"
  47 #include "users.h"
  48 #include "servers.h"
  49 #include "ctables.h"
  50 #include "globals.h"
  51 #include "modules.h"
  52 #include "dynamic.h"
  53 #include "wildcard.h"
  54 #include "message.h"
  55 #include "mode.h"
  56 #include "commands.h"
  57 #include "xline.h"
  58 #include "inspstring.h"
  59 #include "dnsqueue.h"
  60
  61 #ifdef GCC3
  62 #define nspace __gnu_cxx
  63 #else
  64 #define nspace std
  65 #endif
  66
  67 int LogLevel = DEFAULT;
  68 char ServerName[MAXBUF];
  69 char Network[MAXBUF];
  70 char ServerDesc[MAXBUF];
  71 char AdminName[MAXBUF];
  72 char AdminEmail[MAXBUF];
  73 char AdminNick[MAXBUF];
  74 char diepass[MAXBUF];
  75 char restartpass[MAXBUF];
  76 char motd[MAXBUF];
  77 char rules[MAXBUF];
  78 char list[MAXBUF];
  79 char PrefixQuit[MAXBUF];
  80 char DieValue[MAXBUF];
  81 char DNSServer[MAXBUF];
  82 int debugging =  0;
  83 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  84 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  85 int DieDelay  =  5;
  86 time_t startup_time = time(NULL);
  87 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  88 extern int MaxWhoResults;
  89 time_t nb_start = 0;
  90 int dns_timeout = 5;
  91
  92 char DisabledCommands[MAXBUF];
  93
  94 bool AllowHalfop = true;
  95 bool AllowProtect = true;
  96 bool AllowFounder = true;
  97
  98 extern std::vector<Module*> modules;
  99 std::vector<std::string> module_names;
 100 extern std::vector<ircd_module*> factory;
 101
 102 extern int MODCOUNT;
 103 int openSockfd[MAXSOCKS];
 104 bool nofork = false;
 105 bool unlimitcore = false;
 106
 107 time_t TIME = time(NULL);
 108
 109 namespace nspace
 110 {
 111 #ifdef GCC34
 112         template<> struct hash<in_addr>
 113 #else
 114         template<> struct nspace::hash<in_addr>
 115 #endif
 116         {
 117                 size_t operator()(const struct in_addr &a) const
 118                 {
 119                         size_t q;
 120                         memcpy(&q,&a,sizeof(size_t));
 121                         return q;
 122                 }
 123         };
 124 #ifdef GCC34
 125         template<> struct hash<string>
 126 #else
 127         template<> struct nspace::hash<string>
 128 #endif
 129         {
 130                 size_t operator()(const string &s) const
 131                 {
 132                         char a[MAXBUF];
 133                         static struct hash<const char *> strhash;
 134                         strlcpy(a,s.c_str(),MAXBUF);
 135                         strlower(a);
 136                         return strhash(a);
 137                 }
 138         };
 139 }
 140
 141
 142 struct StrHashComp
 143 {
 144
 145         bool operator()(const string& s1, const string& s2) const
 146         {
 147                 char a[MAXBUF],b[MAXBUF];
 148                 strlcpy(a,s1.c_str(),MAXBUF);
 149                 strlcpy(b,s2.c_str(),MAXBUF);
 150                 strlower(a);
 151                 strlower(b);
 152                 return (strcasecmp(a,b) == 0);
 153         }
 154
 155 };
 156
 157 struct InAddr_HashComp
 158 {
 159
 160         bool operator()(const in_addr &s1, const in_addr &s2) const
 161         {
 162                 size_t q;
 163                 size_t p;
 164
 165                 memcpy(&q,&s1,sizeof(size_t));
 166                 memcpy(&p,&s2,sizeof(size_t));
 167
 168                 return (q == p);
 169         }
 170
 171 };
 172
 173
 174 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 175 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 176 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 177 typedef std::deque<command_t> command_table;
 178
 179 serverrec* me[32];
 180
 181 FILE *log_file;
 182
 183 user_hash clientlist;
 184 chan_hash chanlist;
 185 user_hash whowas;
 186 command_table cmdlist;
 187 file_cache MOTD;
 188 file_cache RULES;
 189 address_cache IP;
 190
 191 ClassVector Classes;
 192
 193 struct linger linger = { 0 };
 194 char MyExecutable[1024];
 195 int boundPortCount = 0;
 196 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 197 int defaultRoute = 0;
 198 char ModPath[MAXBUF];
 199
 200 connection C;
 201
 202 long MyKey = C.GenKey();
 203
 204 /* prototypes */
 205
 206 int has_channel(userrec *u, chanrec *c);
 207 int usercount(chanrec *c);
 208 int usercount_i(chanrec *c);
 209 char* Passwd(userrec *user);
 210 bool IsDenied(userrec *user);
 211 void AddWhoWas(userrec* u);
 212
 213 std::vector<long> auth_cookies;
 214 std::stringstream config_f(stringstream::in | stringstream::out);
 215
 216 std::vector<userrec*> all_opers;
 217
 218 void AddOper(userrec* user)
 219 {
 220         log(DEBUG,"Oper added to optimization list");
 221         all_opers.push_back(user);
 222 }
 223
 224 void DeleteOper(userrec* user)
 225 {
 226         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 227         {
 228                 if (*a == user)
 229                 {
 230                         log(DEBUG,"Oper removed from optimization list");
 231                         all_opers.erase(a);
 232                         return;
 233                 }
 234         }
 235 }
 236
 237 long GetRevision()
 238 {
 239         char Revision[] = "$Revision$";
 240         char *s1 = Revision;
 241         char *savept;
 242         char *v2 = strtok_r(s1," ",&savept);
 243         s1 = savept;
 244         v2 = strtok_r(s1," ",&savept);
 245         s1 = savept;
 246         return (long)(atof(v2)*10000);
 247 }
 248
 249
 250 std::string getservername()
 251 {
 252         return ServerName;
 253 }
 254
 255 std::string getserverdesc()
 256 {
 257         return ServerDesc;
 258 }
 259
 260 std::string getnetworkname()
 261 {
 262         return Network;
 263 }
 264
 265 std::string getadminname()
 266 {
 267         return AdminName;
 268 }
 269
 270 std::string getadminemail()
 271 {
 272         return AdminEmail;
 273 }
 274
 275 std::string getadminnick()
 276 {
 277         return AdminNick;
 278 }
 279
 280 void log(int level,char *text, ...)
 281 {
 282         char textbuffer[MAXBUF];
 283         va_list argsPtr;
 284         time_t rawtime;
 285         struct tm * timeinfo;
 286         if (level < LogLevel)
 287                 return;
 288
 289         time(&rawtime);
 290         timeinfo = localtime (&rawtime);
 291
 292         if (log_file)
 293         {
 294                 char b[MAXBUF];
 295                 va_start (argsPtr, text);
 296                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 297                 va_end(argsPtr);
 298                 strlcpy(b,asctime(timeinfo),MAXBUF);
 299                 b[24] = ':';    // we know this is the end of the time string
 300                 fprintf(log_file,"%s %s\n",b,textbuffer);
 301                 if (nofork)
 302                 {
 303                         // nofork enabled? display it on terminal too
 304                         printf("%s %s\n",b,textbuffer);
 305                 }
 306         }
 307 }
 308
 309 void readfile(file_cache &F, const char* fname)
 310 {
 311         FILE* file;
 312         char linebuf[MAXBUF];
 313
 314         log(DEBUG,"readfile: loading %s",fname);
 315         F.clear();
 316         file =  fopen(fname,"r");
 317         if (file)
 318         {
 319                 while (!feof(file))
 320                 {
 321                         fgets(linebuf,sizeof(linebuf),file);
 322                         linebuf[strlen(linebuf)-1]='\0';
 323                         if (linebuf[0] == 0)
 324                         {
 325                                 strcpy(linebuf,"  ");
 326                         }
 327                         if (!feof(file))
 328                         {
 329                                 F.push_back(linebuf);
 330                         }
 331                 }
 332                 fclose(file);
 333         }
 334         else
 335         {
 336                 log(DEBUG,"readfile: failed to load file: %s",fname);
 337         }
 338         log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
 339 }
 340
 341 void ReadConfig(bool bail, userrec* user)
 342 {
 343         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 344         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF];
 345         ConnectClass c;
 346         std::stringstream errstr;
 347
 348         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 349         {
 350                 errstr.seekg(0);
 351                 if (bail)
 352                 {
 353                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 354                         Exit(0);
 355                 }
 356                 else
 357                 {
 358                         char dataline[1024];
 359                         if (user)
 360                         {
 361                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 362                                 while (!errstr.eof())
 363                                 {
 364                                         errstr.getline(dataline,1024);
 365                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 366                                 }
 367                         }
 368                         else
 369                         {
 370                                 WriteOpers("There were errors in the configuration file:",user->nick);
 371                                 while (!errstr.eof())
 372                                 {
 373                                         errstr.getline(dataline,1024);
 374                                         WriteOpers(dataline);
 375                                 }
 376                         }
 377                         return;
 378                 }
 379         }
 380
 381         ConfValue("server","name",0,ServerName,&config_f);
 382         ConfValue("server","description",0,ServerDesc,&config_f);
 383         ConfValue("server","network",0,Network,&config_f);
 384         ConfValue("admin","name",0,AdminName,&config_f);
 385         ConfValue("admin","email",0,AdminEmail,&config_f);
 386         ConfValue("admin","nick",0,AdminNick,&config_f);
 387         ConfValue("files","motd",0,motd,&config_f);
 388         ConfValue("files","rules",0,rules,&config_f);
 389         ConfValue("power","diepass",0,diepass,&config_f);
 390         ConfValue("power","pause",0,pauseval,&config_f);
 391         ConfValue("power","restartpass",0,restartpass,&config_f);
 392         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 393         ConfValue("die","value",0,DieValue,&config_f);
 394         ConfValue("options","loglevel",0,dbg,&config_f);
 395         ConfValue("options","netbuffersize",0,NB,&config_f);
 396         ConfValue("options","maxwho",0,MW,&config_f);
 397         ConfValue("options","allowhalfop",0,AH,&config_f);
 398         ConfValue("options","allowprotect",0,AP,&config_f);
 399         ConfValue("options","allowfounder",0,AF,&config_f);
 400         ConfValue("dns","server",0,DNSServer,&config_f);
 401         ConfValue("dns","timeout",0,DNT,&config_f);
 402         ConfValue("options","moduledir",0,ModPath,&config_f);
 403         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 404
 405         NetBufferSize = atoi(NB);
 406         MaxWhoResults = atoi(MW);
 407         dns_timeout = atoi(DNT);
 408         if (!dns_timeout)
 409                 dns_timeout = 5;
 410         if (!DNSServer[0])
 411                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 412         if (!ModPath[0])
 413                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 414         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 415         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 416         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 417         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 418         {
 419                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 420                 NetBufferSize = 10240;
 421         }
 422         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 423         {
 424                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 425                 MaxWhoResults = 128;
 426         }
 427         if (!strcmp(dbg,"debug"))
 428                 LogLevel = DEBUG;
 429         if (!strcmp(dbg,"verbose"))
 430                 LogLevel = VERBOSE;
 431         if (!strcmp(dbg,"default"))
 432                 LogLevel = DEFAULT;
 433         if (!strcmp(dbg,"sparse"))
 434                 LogLevel = SPARSE;
 435         if (!strcmp(dbg,"none"))
 436                 LogLevel = NONE;
 437         readfile(MOTD,motd);
 438         log(DEFAULT,"Reading message of the day...");
 439         readfile(RULES,rules);
 440         log(DEFAULT,"Reading connect classes...");
 441         Classes.clear();
 442         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 443         {
 444                 strcpy(Value,"");
 445                 ConfValue("connect","allow",i,Value,&config_f);
 446                 ConfValue("connect","timeout",i,timeout,&config_f);
 447                 ConfValue("connect","flood",i,flood,&config_f);
 448                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 449                 if (Value[0])
 450                 {
 451                         strlcpy(c.host,Value,MAXBUF);
 452                         c.type = CC_ALLOW;
 453                         strlcpy(Value,"",MAXBUF);
 454                         ConfValue("connect","password",i,Value,&config_f);
 455                         strlcpy(c.pass,Value,MAXBUF);
 456                         c.registration_timeout = 90; // default is 2 minutes
 457                         c.pingtime = 120;
 458                         c.flood = atoi(flood);
 459                         if (atoi(timeout)>0)
 460                         {
 461                                 c.registration_timeout = atoi(timeout);
 462                         }
 463                         if (atoi(pfreq)>0)
 464                         {
 465                                 c.pingtime = atoi(pfreq);
 466                         }
 467                         Classes.push_back(c);
 468                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%lu flood=%lu",c.host,c.pass,(unsigned long)c.registration_timeout,(unsigned long)c.flood);
 469                 }
 470                 else
 471                 {
 472                         ConfValue("connect","deny",i,Value,&config_f);
 473                         strlcpy(c.host,Value,MAXBUF);
 474                         c.type = CC_DENY;
 475                         Classes.push_back(c);
 476                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 477                 }
 478
 479         }
 480         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 481         read_xline_defaults();
 482         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 483         apply_lines();
 484         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 485         if (!bail)
 486         {
 487                 log(DEFAULT,"Adding and removing modules due to rehash...");
 488
 489                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 490
 491                 // store the old module names
 492                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 493                 {
 494                         old_module_names.push_back(*t);
 495                 }
 496
 497                 // get the new module names
 498                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 499                 {
 500                         ConfValue("module","name",count2,Value,&config_f);
 501                         new_module_names.push_back(Value);
 502                 }
 503
 504                 // now create a list of new modules that are due to be loaded
 505                 // and a seperate list of modules which are due to be unloaded
 506                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 507                 {
 508                         bool added = true;
 509                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 510                         {
 511                                 if (*old == *_new)
 512                                         added = false;
 513                         }
 514                         if (added)
 515                                 added_modules.push_back(*_new);
 516                 }
 517                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 518                 {
 519                         bool removed = true;
 520                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 521                         {
 522                                 if (*newm == *oldm)
 523                                         removed = false;
 524                         }
 525                         if (removed)
 526                                 removed_modules.push_back(*oldm);
 527                 }
 528                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 529                 // to be removed.
 530                 int rem = 0, add = 0;
 531                 if (!removed_modules.empty())
 532                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 533                 {
 534                         if (UnloadModule(removing->c_str()))
 535                         {
 536                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 537                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 538                                 rem++;
 539                         }
 540                         else
 541                         {
 542                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 543                         }
 544                 }
 545                 if (!added_modules.empty())
 546                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 547                 {
 548                         if (LoadModule(adding->c_str()))
 549                         {
 550                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 551                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 552                                 add++;
 553                         }
 554                         else
 555                         {
 556                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 557                         }
 558                 }
 559                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),(unsigned long)add,(unsigned long)added_modules.size());
 560         }
 561 }
 562
 563 /* write formatted text to a socket, in same format as printf */
 564
 565 void Write(int sock,char *text, ...)
 566 {
 567         if (sock == FD_MAGIC_NUMBER)
 568                 return;
 569         if (!text)
 570         {
 571                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 572                 return;
 573         }
 574         char textbuffer[MAXBUF];
 575         va_list argsPtr;
 576         char tb[MAXBUF];
 577
 578         va_start (argsPtr, text);
 579         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 580         va_end(argsPtr);
 581         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 582         chop(tb);
 583         if (sock != -1)
 584         {
 585                 write(sock,tb,bytes > 514 ? 514 : bytes);
 586         }
 587 }
 588
 589 /* write a server formatted numeric response to a single socket */
 590
 591 void WriteServ(int sock, char* text, ...)
 592 {
 593         if (sock == FD_MAGIC_NUMBER)
 594                 return;
 595         if (!text)
 596         {
 597                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 598                 return;
 599         }
 600         char textbuffer[MAXBUF],tb[MAXBUF];
 601         va_list argsPtr;
 602         va_start (argsPtr, text);
 603
 604         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 605         va_end(argsPtr);
 606         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 607         chop(tb);
 608         if (sock != -1)
 609         {
 610                 write(sock,tb,bytes > 514 ? 514 : bytes);
 611         }
 612 }
 613
 614 /* write text from an originating user to originating user */
 615
 616 void WriteFrom(int sock, userrec *user,char* text, ...)
 617 {
 618         if (sock == FD_MAGIC_NUMBER)
 619                 return;
 620         if ((!text) || (!user))
 621         {
 622                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 623                 return;
 624         }
 625         char textbuffer[MAXBUF],tb[MAXBUF];
 626         va_list argsPtr;
 627         va_start (argsPtr, text);
 628
 629         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 630         va_end(argsPtr);
 631         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 632         chop(tb);
 633         if (sock != -1)
 634         {
 635                 write(sock,tb,bytes > 514 ? 514 : bytes);
 636         }
 637 }
 638
 639 /* write text to an destination user from a source user (e.g. user privmsg) */
 640
 641 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 642 {
 643         if ((!dest) || (!data))
 644         {
 645                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 646                 return;
 647         }
 648         if (dest->fd == FD_MAGIC_NUMBER)
 649                 return;
 650         char textbuffer[MAXBUF],tb[MAXBUF];
 651         va_list argsPtr;
 652         va_start (argsPtr, data);
 653         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 654         va_end(argsPtr);
 655         chop(tb);
 656
 657         // if no source given send it from the server.
 658         if (!source)
 659         {
 660                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 661         }
 662         else
 663         {
 664                 WriteFrom(dest->fd,source,"%s",textbuffer);
 665         }
 666 }
 667
 668 /* write formatted text from a source user to all users on a channel
 669  * including the sender (NOT for privmsg, notice etc!) */
 670
 671 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 672 {
 673         if ((!Ptr) || (!user) || (!text))
 674         {
 675                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 676                 return;
 677         }
 678         char textbuffer[MAXBUF];
 679         va_list argsPtr;
 680         va_start (argsPtr, text);
 681         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 682         va_end(argsPtr);
 683
 684         std::vector<char*> *ulist = Ptr->GetUsers();
 685         for (int j = 0; j < ulist->size(); j++)
 686         {
 687                 char* o = (*ulist)[j];
 688                 userrec* otheruser = (userrec*)o;
 689                 if (otheruser->fd != FD_MAGIC_NUMBER)
 690                         WriteTo(user,otheruser,"%s",textbuffer);
 691         }
 692 }
 693
 694 /* write formatted text from a source user to all users on a channel
 695  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 696  * users on remote servers */
 697
 698 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 699 {
 700         if ((!Ptr) || (!text))
 701         {
 702                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 703                 return;
 704         }
 705         char textbuffer[MAXBUF];
 706         va_list argsPtr;
 707         va_start (argsPtr, text);
 708         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 709         va_end(argsPtr);
 710
 711         std::vector<char*> *ulist = Ptr->GetUsers();
 712         for (int j = 0; j < ulist->size(); j++)
 713         {
 714                 char* o = (*ulist)[j];
 715                 userrec* otheruser = (userrec*)o;
 716                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 717                 {
 718                         if (!user)
 719                         {
 720                                 WriteServ(otheruser->fd,"%s",textbuffer);
 721                         }
 722                         else
 723                         {
 724                                 WriteTo(user,otheruser,"%s",textbuffer);
 725                         }
 726                 }
 727         }
 728 }
 729
 730
 731 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 732 {
 733         if ((!Ptr) || (!text))
 734         {
 735                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 736                 return;
 737         }
 738         char textbuffer[MAXBUF];
 739         va_list argsPtr;
 740         va_start (argsPtr, text);
 741         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 742         va_end(argsPtr);
 743
 744
 745         std::vector<char*> *ulist = Ptr->GetUsers();
 746         for (int j = 0; j < ulist->size(); j++)
 747         {
 748                 char* o = (*ulist)[j];
 749                 userrec* otheruser = (userrec*)o;
 750                 if (otheruser->fd != FD_MAGIC_NUMBER)
 751                         WriteServ(otheruser->fd,"%s",textbuffer);
 752         }
 753 }
 754
 755
 756 /* write formatted text from a source user to all users on a channel except
 757  * for the sender (for privmsg etc) */
 758
 759 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 760 {
 761         if ((!Ptr) || (!user) || (!text))
 762         {
 763                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 764                 return;
 765         }
 766         char textbuffer[MAXBUF];
 767         va_list argsPtr;
 768         va_start (argsPtr, text);
 769         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 770         va_end(argsPtr);
 771
 772         std::vector<char*> *ulist = Ptr->GetUsers();
 773         for (int j = 0; j < ulist->size(); j++)
 774         {
 775                 char* o = (*ulist)[j];
 776                 userrec* otheruser = (userrec*)o;
 777                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 778                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 779         }
 780 }
 781
 782
 783 std::string GetServerDescription(char* servername)
 784 {
 785         for (int j = 0; j < 32; j++)
 786         {
 787                 if (me[j] != NULL)
 788                 {
 789                         for (int k = 0; k < me[j]->connectors.size(); k++)
 790                         {
 791                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 792                                 {
 793                                         return me[j]->connectors[k].GetDescription();
 794                                 }
 795                         }
 796                 }
 797                 return ServerDesc; // not a remote server that can be found, it must be me.
 798         }
 799 }
 800
 801
 802 /* write a formatted string to all users who share at least one common
 803  * channel, including the source user e.g. for use in NICK */
 804
 805 void WriteCommon(userrec *u, char* text, ...)
 806 {
 807         if (!u)
 808         {
 809                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 810                 return;
 811         }
 812
 813         if (u->registered != 7) {
 814                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 815                 return;
 816         }
 817
 818         char textbuffer[MAXBUF];
 819         va_list argsPtr;
 820         va_start (argsPtr, text);
 821         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 822         va_end(argsPtr);
 823
 824         // FIX: Stops a message going to the same person more than once
 825         std::vector<int> already_sent;
 826
 827         for (int i = 0; i < MAXCHANS; i++)
 828         {
 829                 if (u->chans[i].channel)
 830                 {
 831                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 832                         for (int j = 0; j < ulist->size(); j++)
 833                         {
 834                                 char* o = (*ulist)[j];
 835                                 userrec* otheruser = (userrec*)o;
 836                                 bool do_send = true;
 837                                 for (int t = 0; t < already_sent.size(); t++)
 838                                 {
 839                                         if (already_sent[t] == otheruser->fd)
 840                                         {
 841                                                 do_send = false;
 842                                                 break;
 843                                         }
 844                                 }
 845                                 if (do_send)
 846                                 {
 847                                         already_sent.push_back(otheruser->fd);
 848                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 849                                 }
 850                         }
 851                 }
 852         }
 853 }
 854
 855 /* write a formatted string to all users who share at least one common
 856  * channel, NOT including the source user e.g. for use in QUIT */
 857
 858 void WriteCommonExcept(userrec *u, char* text, ...)
 859 {
 860         if (!u)
 861         {
 862                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 863                 return;
 864         }
 865
 866         if (u->registered != 7) {
 867                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 868                 return;
 869         }
 870
 871         char textbuffer[MAXBUF];
 872         va_list argsPtr;
 873         va_start (argsPtr, text);
 874         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 875         va_end(argsPtr);
 876
 877         std::vector<int> already_sent;
 878
 879         for (int i = 0; i < MAXCHANS; i++)
 880         {
 881                 if (u->chans[i].channel)
 882                 {
 883                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 884                         for (int j = 0; j < ulist->size(); j++)
 885                         {
 886                                 char* o = (*ulist)[j];
 887                                 userrec* otheruser = (userrec*)o;
 888                                 if (u != otheruser)
 889                                 {
 890                                         bool do_send = true;
 891                                         for (int t = 0; t < already_sent.size(); t++)
 892                                         {
 893                                                 if (already_sent[t] == otheruser->fd)
 894                                                 {
 895                                                         do_send = false;
 896                                                         break;
 897                                                 }
 898                                         }
 899                                         if (do_send)
 900                                         {
 901                                                 already_sent.push_back(otheruser->fd);
 902                                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 903                                         }
 904                                 }
 905                         }
 906                 }
 907         }
 908 }
 909
 910 void WriteOpers(char* text, ...)
 911 {
 912         if (!text)
 913         {
 914                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 915                 return;
 916         }
 917
 918         char textbuffer[MAXBUF];
 919         va_list argsPtr;
 920         va_start (argsPtr, text);
 921         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 922         va_end(argsPtr);
 923
 924         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 925         {
 926                 userrec* a = *i;
 927                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 928                 {
 929                         if (strchr(a->modes,'s'))
 930                         {
 931                                 // send server notices to all with +s
 932                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 933                         }
 934                 }
 935         }
 936 }
 937
 938 // returns TRUE of any users on channel C occupy server 'servername'.
 939
 940 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 941 {
 942         log(DEBUG,"ChanAnyOnThisServer");
 943
 944         std::vector<char*> *ulist = c->GetUsers();
 945         for (int j = 0; j < ulist->size(); j++)
 946         {
 947                 char* o = (*ulist)[j];
 948                 userrec* user = (userrec*)o;
 949                 if (!strcasecmp(user->server,servername))
 950                         return true;
 951         }
 952         return false;
 953 }
 954
 955 // returns true if user 'u' shares any common channels with any users on server 'servername'
 956
 957 bool CommonOnThisServer(userrec* u,const char* servername)
 958 {
 959         log(DEBUG,"ChanAnyOnThisServer");
 960
 961         for (int i = 0; i < MAXCHANS; i++)
 962         {
 963                 if (u->chans[i].channel)
 964                 {
 965                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 966                         for (int j = 0; j < ulist->size(); j++)
 967                         {
 968                                 char* o = (*ulist)[j];
 969                                 userrec* user = (userrec*)o;
 970                                 if (!strcasecmp(user->server,servername))
 971                                         return true;
 972                         }
 973                 }
 974         }
 975         return false;
 976 }
 977
 978
 979 void NetSendToCommon(userrec* u, char* s)
 980 {
 981         char buffer[MAXBUF];
 982         snprintf(buffer,MAXBUF,"%s",s);
 983
 984         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 985
 986         std::string msg = buffer;
 987         FOREACH_MOD OnPacketTransmit(msg,s);
 988         strlcpy(buffer,msg.c_str(),MAXBUF);
 989
 990         for (int j = 0; j < 32; j++)
 991         {
 992                 if (me[j] != NULL)
 993                 {
 994                         for (int k = 0; k < me[j]->connectors.size(); k++)
 995                         {
 996                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 997                                 {
 998                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 999                                 }
1000                         }
1001                 }
1002         }
1003 }
1004
1005
1006 void NetSendToAll(char* s)
1007 {
1008         char buffer[MAXBUF];
1009         snprintf(buffer,MAXBUF,"%s",s);
1010
1011         log(DEBUG,"NetSendToAll: '%s'",s);
1012
1013         std::string msg = buffer;
1014         FOREACH_MOD OnPacketTransmit(msg,s);
1015         strlcpy(buffer,msg.c_str(),MAXBUF);
1016
1017         for (int j = 0; j < 32; j++)
1018         {
1019                 if (me[j] != NULL)
1020                 {
1021                         for (int k = 0; k < me[j]->connectors.size(); k++)
1022                         {
1023                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1024                         }
1025                 }
1026         }
1027 }
1028
1029 void NetSendToAllAlive(char* s)
1030 {
1031         char buffer[MAXBUF];
1032         snprintf(buffer,MAXBUF,"%s",s);
1033
1034         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1035
1036         std::string msg = buffer;
1037         FOREACH_MOD OnPacketTransmit(msg,s);
1038         strlcpy(buffer,msg.c_str(),MAXBUF);
1039
1040         for (int j = 0; j < 32; j++)
1041         {
1042                 if (me[j] != NULL)
1043                 {
1044                         for (int k = 0; k < me[j]->connectors.size(); k++)
1045                         {
1046                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1047                                 {
1048                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1049                                 }
1050                                 else
1051                                 {
1052                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1053                                 }
1054                         }
1055                 }
1056         }
1057 }
1058
1059
1060 void NetSendToOne(char* target,char* s)
1061 {
1062         char buffer[MAXBUF];
1063         snprintf(buffer,MAXBUF,"%s",s);
1064
1065         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1066
1067         std::string msg = buffer;
1068         FOREACH_MOD OnPacketTransmit(msg,s);
1069         strlcpy(buffer,msg.c_str(),MAXBUF);
1070
1071         for (int j = 0; j < 32; j++)
1072         {
1073                 if (me[j] != NULL)
1074                 {
1075                         for (int k = 0; k < me[j]->connectors.size(); k++)
1076                         {
1077                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1078                                 {
1079                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1080                                 }
1081                         }
1082                 }
1083         }
1084 }
1085
1086 void NetSendToAllExcept(const char* target,char* s)
1087 {
1088         char buffer[MAXBUF];
1089         snprintf(buffer,MAXBUF,"%s",s);
1090
1091         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1092
1093         std::string msg = buffer;
1094         FOREACH_MOD OnPacketTransmit(msg,s);
1095         strlcpy(buffer,msg.c_str(),MAXBUF);
1096
1097         for (int j = 0; j < 32; j++)
1098         {
1099                 if (me[j] != NULL)
1100                 {
1101                         for (int k = 0; k < me[j]->connectors.size(); k++)
1102                         {
1103                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1104                                 {
1105                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1106                                 }
1107                         }
1108                 }
1109         }
1110 }
1111
1112
1113 void WriteMode(const char* modes, int flags, const char* text, ...)
1114 {
1115         if ((!text) || (!modes) || (!flags))
1116         {
1117                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1118                 return;
1119         }
1120
1121         char textbuffer[MAXBUF];
1122         va_list argsPtr;
1123         va_start (argsPtr, text);
1124         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1125         va_end(argsPtr);
1126         int modelen = strlen(modes);
1127
1128         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1129         {
1130                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1131                 {
1132                         bool send_to_user = false;
1133
1134                         if (flags == WM_AND)
1135                         {
1136                                 send_to_user = true;
1137                                 for (int n = 0; n < modelen; n++)
1138                                 {
1139                                         if (!hasumode(i->second,modes[n]))
1140                                         {
1141                                                 send_to_user = false;
1142                                                 break;
1143                                         }
1144                                 }
1145                         }
1146                         else if (flags == WM_OR)
1147                         {
1148                                 send_to_user = false;
1149                                 for (int n = 0; n < modelen; n++)
1150                                 {
1151                                         if (hasumode(i->second,modes[n]))
1152                                         {
1153                                                 send_to_user = true;
1154                                                 break;
1155                                         }
1156                                 }
1157                         }
1158
1159                         if (send_to_user)
1160                         {
1161                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1162                         }
1163                 }
1164         }
1165 }
1166
1167
1168 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1169 {
1170         if ((!text) || (!source))
1171         {
1172                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1173                 return;
1174         }
1175
1176         char textbuffer[MAXBUF];
1177         va_list argsPtr;
1178         va_start (argsPtr, text);
1179         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1180         va_end(argsPtr);
1181
1182         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1183         {
1184                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1185                 {
1186                         if (strchr(i->second->modes,'w'))
1187                         {
1188                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1189                         }
1190                 }
1191         }
1192
1193         if (!local_only)
1194         {
1195                 char buffer[MAXBUF];
1196                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1197                 NetSendToAll(buffer);
1198         }
1199 }
1200
1201 /* convert a string to lowercase. Note following special circumstances
1202  * taken from RFC 1459. Many "official" server branches still hold to this
1203  * rule so i will too;
1204  *
1205  *  Because of IRC's scandanavian origin, the characters {}| are
1206  *  considered to be the lower case equivalents of the characters []\,
1207  *  respectively. This is a critical issue when determining the
1208  *  equivalence of two nicknames.
1209  */
1210
1211 void strlower(char *n)
1212 {
1213         if (!n)
1214         {
1215                 return;
1216         }
1217         for (int i = 0; n[i] != 0; i++)
1218         {
1219                 n[i] = tolower(n[i]);
1220                 if (n[i] == '[')
1221                         n[i] = '{';
1222                 if (n[i] == ']')
1223                         n[i] = '}';
1224                 if (n[i] == '\\')
1225                         n[i] = '|';
1226         }
1227 }
1228
1229
1230
1231 /* Find a user record by nickname and return a pointer to it */
1232
1233 userrec* Find(std::string nick)
1234 {
1235         user_hash::iterator iter = clientlist.find(nick);
1236
1237         if (iter == clientlist.end())
1238                 /* Couldn't find it */
1239                 return NULL;
1240
1241         return iter->second;
1242 }
1243
1244 /* find a channel record by channel name and return a pointer to it */
1245
1246 chanrec* FindChan(const char* chan)
1247 {
1248         if (!chan)
1249         {
1250                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1251                 return NULL;
1252         }
1253
1254         chan_hash::iterator iter = chanlist.find(chan);
1255
1256         if (iter == chanlist.end())
1257                 /* Couldn't find it */
1258                 return NULL;
1259
1260         return iter->second;
1261 }
1262
1263
1264 long GetMaxBans(char* name)
1265 {
1266         char CM[MAXBUF];
1267         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1268         {
1269                 ConfValue("banlist","chan",count,CM,&config_f);
1270                 if (match(name,CM))
1271                 {
1272                         ConfValue("banlist","limit",count,CM,&config_f);
1273                         return atoi(CM);
1274                 }
1275         }
1276         return 64;
1277 }
1278
1279
1280 void purge_empty_chans(userrec* u)
1281 {
1282
1283         int go_again = 1, purge = 0;
1284
1285         // firstly decrement the count on each channel
1286         for (int f = 0; f < MAXCHANS; f++)
1287         {
1288                 if (u->chans[f].channel)
1289                 {
1290                         u->chans[f].channel->DecUserCounter();
1291                         u->chans[f].channel->DelUser((char*)u);
1292                 }
1293         }
1294
1295         for (int i = 0; i < MAXCHANS; i++)
1296         {
1297                 if (u->chans[i].channel)
1298                 {
1299                         if (!usercount(u->chans[i].channel))
1300                         {
1301                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1302                                 /* kill the record */
1303                                 if (i2 != chanlist.end())
1304                                 {
1305                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1306                                         if (i2->second)
1307                                                 delete i2->second;
1308                                         chanlist.erase(i2);
1309                                         go_again = 1;
1310                                         purge++;
1311                                         u->chans[i].channel = NULL;
1312                                 }
1313                         }
1314                         else
1315                         {
1316                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1317                         }
1318                 }
1319         }
1320         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1321
1322         DeleteOper(u);
1323 }
1324
1325
1326 char scratch[MAXBUF];
1327 char sparam[MAXBUF];
1328
1329 char* chanmodes(chanrec *chan)
1330 {
1331         if (!chan)
1332         {
1333                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1334                 strcpy(scratch,"");
1335                 return scratch;
1336         }
1337
1338         strcpy(scratch,"");
1339         strcpy(sparam,"");
1340         if (chan->noexternal)
1341         {
1342                 strlcat(scratch,"n",MAXMODES);
1343         }
1344         if (chan->topiclock)
1345         {
1346                 strlcat(scratch,"t",MAXMODES);
1347         }
1348         if (chan->key[0])
1349         {
1350                 strlcat(scratch,"k",MAXMODES);
1351         }
1352         if (chan->limit)
1353         {
1354                 strlcat(scratch,"l",MAXMODES);
1355         }
1356         if (chan->inviteonly)
1357         {
1358                 strlcat(scratch,"i",MAXMODES);
1359         }
1360         if (chan->moderated)
1361         {
1362                 strlcat(scratch,"m",MAXMODES);
1363         }
1364         if (chan->secret)
1365         {
1366                 strlcat(scratch,"s",MAXMODES);
1367         }
1368         if (chan->c_private)
1369         {
1370                 strlcat(scratch,"p",MAXMODES);
1371         }
1372         if (chan->key[0])
1373         {
1374                 strlcat(sparam," ",MAXBUF);
1375                 strlcat(sparam,chan->key,MAXBUF);
1376         }
1377         if (chan->limit)
1378         {
1379                 char foo[24];
1380                 sprintf(foo," %lu",(unsigned long)chan->limit);
1381                 strlcat(sparam,foo,MAXBUF);
1382         }
1383         if (*chan->custom_modes)
1384         {
1385                 strlcat(scratch,chan->custom_modes,MAXMODES);
1386                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1387                 {
1388                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1389                         if (extparam != "")
1390                         {
1391                                 strlcat(sparam," ",MAXBUF);
1392                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1393                         }
1394                 }
1395         }
1396         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1397         strlcat(scratch,sparam,MAXMODES);
1398         return scratch;
1399 }
1400
1401
1402 /* compile a userlist of a channel into a string, each nick seperated by
1403  * spaces and op, voice etc status shown as @ and + */
1404
1405 void userlist(userrec *user,chanrec *c)
1406 {
1407         if ((!c) || (!user))
1408         {
1409                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1410                 return;
1411         }
1412
1413         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1414         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1415         {
1416                 if (has_channel(i->second,c))
1417                 {
1418                         if (isnick(i->second->nick))
1419                         {
1420                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1421                                 {
1422                                         /* user is +i, and source not on the channel, does not show
1423                                          * nick in NAMES list */
1424                                         continue;
1425                                 }
1426                                 strlcat(list,cmode(i->second,c),MAXBUF);
1427                                 strlcat(list,i->second->nick,MAXBUF);
1428                                 strlcat(list," ",MAXBUF);
1429                                 if (strlen(list)>(480-NICKMAX))
1430                                 {
1431                                         /* list overflowed into
1432                                          * multiple numerics */
1433                                         WriteServ(user->fd,"%s",list);
1434                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1435                                 }
1436                         }
1437                 }
1438         }
1439         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1440         {
1441                 WriteServ(user->fd,"%s",list);
1442         }
1443 }
1444
1445 /* return a count of the users on a specific channel accounting for
1446  * invisible users who won't increase the count. e.g. for /LIST */
1447
1448 int usercount_i(chanrec *c)
1449 {
1450         int count = 0;
1451
1452         if (!c)
1453         {
1454                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1455                 return 0;
1456         }
1457
1458         strcpy(list,"");
1459         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1460         {
1461                 if (i->second)
1462                 {
1463                         if (has_channel(i->second,c))
1464                         {
1465                                 if (isnick(i->second->nick))
1466                                 {
1467                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1468                                         {
1469                                                 /* user is +i, and source not on the channel, does not show
1470                                                  * nick in NAMES list */
1471                                                 continue;
1472                                         }
1473                                         count++;
1474                                 }
1475                         }
1476                 }
1477         }
1478         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1479         return count;
1480 }
1481
1482
1483 int usercount(chanrec *c)
1484 {
1485         if (!c)
1486         {
1487                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1488                 return 0;
1489         }
1490         int count = c->GetUserCounter();
1491         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1492         return count;
1493 }
1494
1495
1496 /* add a channel to a user, creating the record for it if needed and linking
1497  * it to the user record */
1498
1499 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1500 {
1501         if ((!user) || (!cn))
1502         {
1503                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1504                 return 0;
1505         }
1506
1507         chanrec* Ptr;
1508         int created = 0;
1509         char cname[MAXBUF];
1510
1511         strncpy(cname,cn,MAXBUF);
1512
1513         // we MUST declare this wherever we use FOREACH_RESULT
1514         int MOD_RESULT = 0;
1515
1516         if (strlen(cname) > CHANMAX-1)
1517         {
1518                 cname[CHANMAX-1] = '\0';
1519         }
1520
1521         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1522
1523         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1524         {
1525                 return NULL; // already on the channel!
1526         }
1527
1528
1529         if (!FindChan(cname))
1530         {
1531                 MOD_RESULT = 0;
1532                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1533                 if (MOD_RESULT == 1) {
1534                         return NULL;
1535                 }
1536
1537                 /* create a new one */
1538                 log(DEBUG,"add_channel: creating: %s",cname);
1539                 {
1540                         chanlist[cname] = new chanrec();
1541
1542                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1543                         chanlist[cname]->topiclock = 1;
1544                         chanlist[cname]->noexternal = 1;
1545                         chanlist[cname]->created = TIME;
1546                         strcpy(chanlist[cname]->topic, "");
1547                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1548                         chanlist[cname]->topicset = 0;
1549                         Ptr = chanlist[cname];
1550                         log(DEBUG,"add_channel: created: %s",cname);
1551                         /* set created to 2 to indicate user
1552                          * is the first in the channel
1553                          * and should be given ops */
1554                         created = 2;
1555                 }
1556         }
1557         else
1558         {
1559                 /* channel exists, just fish out a pointer to its struct */
1560                 Ptr = FindChan(cname);
1561                 if (Ptr)
1562                 {
1563                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1564
1565                         // the override flag allows us to bypass channel modes
1566                         // and bans (used by servers)
1567                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1568                         {
1569                                 log(DEBUG,"Not overriding...");
1570                                 MOD_RESULT = 0;
1571                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1572                                 if (MOD_RESULT == 1) {
1573                                         return NULL;
1574                                 }
1575                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1576
1577                                 if (!MOD_RESULT)
1578                                 {
1579                                         log(DEBUG,"add_channel: checking key, invite, etc");
1580                                         MOD_RESULT = 0;
1581                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1582                                         if (MOD_RESULT == 0)
1583                                         {
1584                                                 if (Ptr->key[0])
1585                                                 {
1586                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1587                                                         if (!key)
1588                                                         {
1589                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1590                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1591                                                                 return NULL;
1592                                                         }
1593                                                         else
1594                                                         {
1595                                                                 if (strcasecmp(key,Ptr->key))
1596                                                                 {
1597                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1598                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1599                                                                         return NULL;
1600                                                                 }
1601                                                         }
1602                                                 }
1603                                                 log(DEBUG,"add_channel: no key");
1604                                         }
1605                                         MOD_RESULT = 0;
1606                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1607                                         if (MOD_RESULT == 0)
1608                                         {
1609                                                 if (Ptr->inviteonly)
1610                                                 {
1611                                                         log(DEBUG,"add_channel: channel is +i");
1612                                                         if (user->IsInvited(Ptr->name))
1613                                                         {
1614                                                                 /* user was invited to channel */
1615                                                                 /* there may be an optional channel NOTICE here */
1616                                                         }
1617                                                         else
1618                                                         {
1619                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1620                                                                 return NULL;
1621                                                         }
1622                                                 }
1623                                                 log(DEBUG,"add_channel: channel is not +i");
1624                                         }
1625                                         MOD_RESULT = 0;
1626                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1627                                         if (MOD_RESULT == 0)
1628                                         {
1629                                                 if (Ptr->limit)
1630                                                 {
1631                                                         if (usercount(Ptr) >= Ptr->limit)
1632                                                         {
1633                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1634                                                                 return NULL;
1635                                                         }
1636                                                 }
1637                                         }
1638                                         log(DEBUG,"add_channel: about to walk banlist");
1639                                         MOD_RESULT = 0;
1640                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1641                                         if (MOD_RESULT == 0)
1642                                         {
1643                                                 /* check user against the channel banlist */
1644                                                 if (Ptr)
1645                                                 {
1646                                                         if (Ptr->bans.size())
1647                                                         {
1648                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1649                                                                 {
1650                                                                         if (match(user->GetFullHost(),i->data))
1651                                                                         {
1652                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1653                                                                                 return NULL;
1654                                                                         }
1655                                                                 }
1656                                                         }
1657                                                 }
1658                                                 log(DEBUG,"add_channel: bans checked");
1659                                         }
1660
1661                                 }
1662
1663
1664                                 if ((Ptr) && (user))
1665                                 {
1666                                         user->RemoveInvite(Ptr->name);
1667                                 }
1668
1669                                 log(DEBUG,"add_channel: invites removed");
1670
1671                         }
1672                         else
1673                         {
1674                                 log(DEBUG,"Overridden checks");
1675                         }
1676
1677
1678                 }
1679                 created = 1;
1680         }
1681
1682         log(DEBUG,"Passed channel checks");
1683
1684         for (int index =0; index != MAXCHANS; index++)
1685         {
1686                 log(DEBUG,"Check location %d",index);
1687                 if (user->chans[index].channel == NULL)
1688                 {
1689                         log(DEBUG,"Adding into their channel list at location %d",index);
1690
1691                         if (created == 2)
1692                         {
1693                                 /* first user in is given ops */
1694                                 user->chans[index].uc_modes = UCMODE_OP;
1695                         }
1696                         else
1697                         {
1698                                 user->chans[index].uc_modes = 0;
1699                         }
1700                         user->chans[index].channel = Ptr;
1701                         Ptr->IncUserCounter();
1702                         Ptr->AddUser((char*)user);
1703                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1704
1705                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1706                         {
1707                                 // use the stamdard J token with no privilages.
1708                                 char buffer[MAXBUF];
1709                                 if (created == 2)
1710                                 {
1711                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1712                                 }
1713                                 else
1714                                 {
1715                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1716                                 }
1717                                 NetSendToAll(buffer);
1718                         }
1719
1720                         log(DEBUG,"Sent JOIN to client");
1721
1722                         if (Ptr->topicset)
1723                         {
1724                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1725                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1726                         }
1727                         userlist(user,Ptr);
1728                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1729                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1730                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1731                         FOREACH_MOD OnUserJoin(user,Ptr);
1732                         return Ptr;
1733                 }
1734         }
1735         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1736         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1737         return NULL;
1738 }
1739
1740 /* remove a channel from a users record, and remove the record from memory
1741  * if the channel has become empty */
1742
1743 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1744 {
1745         if ((!user) || (!cname))
1746         {
1747                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1748                 return NULL;
1749         }
1750
1751         chanrec* Ptr;
1752
1753         if ((!cname) || (!user))
1754         {
1755                 return NULL;
1756         }
1757
1758         Ptr = FindChan(cname);
1759
1760         if (!Ptr)
1761         {
1762                 return NULL;
1763         }
1764
1765         FOREACH_MOD OnUserPart(user,Ptr);
1766         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1767
1768         for (int i =0; i != MAXCHANS; i++)
1769         {
1770                 /* zap it from the channel list of the user */
1771                 if (user->chans[i].channel == Ptr)
1772                 {
1773                         if (reason)
1774                         {
1775                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1776
1777                                 if (!local)
1778                                 {
1779                                         char buffer[MAXBUF];
1780                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1781                                         NetSendToAll(buffer);
1782                                 }
1783
1784
1785                         }
1786                         else
1787                         {
1788                                 if (!local)
1789                                 {
1790                                         char buffer[MAXBUF];
1791                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1792                                         NetSendToAll(buffer);
1793                                 }
1794
1795                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1796                         }
1797                         user->chans[i].uc_modes = 0;
1798                         user->chans[i].channel = NULL;
1799                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1800                         break;
1801                 }
1802         }
1803
1804         Ptr->DecUserCounter();
1805         Ptr->DelUser((char*)user);
1806
1807         /* if there are no users left on the channel */
1808         if (!usercount(Ptr))
1809         {
1810                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1811
1812                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1813
1814                 /* kill the record */
1815                 if (iter != chanlist.end())
1816                 {
1817                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1818                         if (iter->second) delete iter->second;
1819                         chanlist.erase(iter);
1820                 }
1821         }
1822 }
1823
1824
1825 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1826 {
1827         if ((!src) || (!user) || (!Ptr) || (!reason))
1828         {
1829                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1830                 return;
1831         }
1832
1833         if ((!Ptr) || (!user) || (!src))
1834         {
1835                 return;
1836         }
1837
1838         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1839
1840         if (!has_channel(user,Ptr))
1841         {
1842                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1843                 return;
1844         }
1845
1846         int MOD_RESULT = 0;
1847         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1848         if (MOD_RESULT == ACR_DENY)
1849                 return;
1850
1851         if (MOD_RESULT == ACR_DEFAULT)
1852         {
1853                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1854                 {
1855                         if (cstatus(src,Ptr) == STATUS_HOP)
1856                         {
1857                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1858                         }
1859                         else
1860                         {
1861                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1862                         }
1863
1864                         return;
1865                 }
1866         }
1867
1868         MOD_RESULT = 0;
1869         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1870         if (MOD_RESULT)
1871                 return;
1872
1873         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1874
1875         for (int i =0; i != MAXCHANS; i++)
1876         {
1877                 /* zap it from the channel list of the user */
1878                 if (user->chans[i].channel)
1879                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1880                 {
1881                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1882                         user->chans[i].uc_modes = 0;
1883                         user->chans[i].channel = NULL;
1884                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1885                         break;
1886                 }
1887         }
1888
1889         Ptr->DecUserCounter();
1890         Ptr->DelUser((char*)user);
1891
1892         /* if there are no users left on the channel */
1893         if (!usercount(Ptr))
1894         {
1895                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1896
1897                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1898
1899                 /* kill the record */
1900                 if (iter != chanlist.end())
1901                 {
1902                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1903                         if (iter->second) delete iter->second;
1904                         chanlist.erase(iter);
1905                 }
1906         }
1907 }
1908
1909
1910
1911
1912 /* This function pokes and hacks at a parameter list like the following:
1913  *
1914  * PART #winbot,#darkgalaxy :m00!
1915  *
1916  * to turn it into a series of individual calls like this:
1917  *
1918  * PART #winbot :m00!
1919  * PART #darkgalaxy :m00!
1920  *
1921  * The seperate calls are sent to a callback function provided by the caller
1922  * (the caller will usually call itself recursively). The callback function
1923  * must be a command handler. Calling this function on a line with no list causes
1924  * no action to be taken. You must provide a starting and ending parameter number
1925  * where the range of the list can be found, useful if you have a terminating
1926  * parameter as above which is actually not part of the list, or parameters
1927  * before the actual list as well. This code is used by many functions which
1928  * can function as "one to list" (see the RFC) */
1929
1930 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1931 {
1932         char plist[MAXBUF];
1933         char *param;
1934         char *pars[32];
1935         char blog[32][MAXBUF];
1936         char blog2[32][MAXBUF];
1937         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1938         char keystr[MAXBUF];
1939         char moo[MAXBUF];
1940
1941         for (int i = 0; i <32; i++)
1942                 strcpy(blog[i],"");
1943
1944         for (int i = 0; i <32; i++)
1945                 strcpy(blog2[i],"");
1946
1947         strcpy(moo,"");
1948         for (int i = 0; i <10; i++)
1949         {
1950                 if (!parameters[i])
1951                 {
1952                         parameters[i] = moo;
1953                 }
1954         }
1955         if (joins)
1956         {
1957                 if (pcnt > 1) /* we have a key to copy */
1958                 {
1959                         strlcpy(keystr,parameters[1],MAXBUF);
1960                 }
1961         }
1962
1963         if (!parameters[start])
1964         {
1965                 return 0;
1966         }
1967         if (!strchr(parameters[start],','))
1968         {
1969                 return 0;
1970         }
1971         strcpy(plist,"");
1972         for (int i = start; i <= end; i++)
1973         {
1974                 if (parameters[i])
1975                 {
1976                         strlcat(plist,parameters[i],MAXBUF);
1977                 }
1978         }
1979
1980         j = 0;
1981         param = plist;
1982
1983         t = strlen(plist);
1984         for (int i = 0; i < t; i++)
1985         {
1986                 if (plist[i] == ',')
1987                 {
1988                         plist[i] = '\0';
1989                         strlcpy(blog[j++],param,MAXBUF);
1990                         param = plist+i+1;
1991                         if (j>20)
1992                         {
1993                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1994                                 return 1;
1995                         }
1996                 }
1997         }
1998         strlcpy(blog[j++],param,MAXBUF);
1999         total = j;
2000
2001         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2002         {
2003                 strcat(keystr,",");
2004         }
2005
2006         if ((joins) && (keystr))
2007         {
2008                 if (strchr(keystr,','))
2009                 {
2010                         j = 0;
2011                         param = keystr;
2012                         t2 = strlen(keystr);
2013                         for (int i = 0; i < t2; i++)
2014                         {
2015                                 if (keystr[i] == ',')
2016                                 {
2017                                         keystr[i] = '\0';
2018                                         strlcpy(blog2[j++],param,MAXBUF);
2019                                         param = keystr+i+1;
2020                                 }
2021                         }
2022                         strlcpy(blog2[j++],param,MAXBUF);
2023                         total2 = j;
2024                 }
2025         }
2026
2027         for (j = 0; j < total; j++)
2028         {
2029                 if (blog[j])
2030                 {
2031                         pars[0] = blog[j];
2032                 }
2033                 for (q = end; q < pcnt-1; q++)
2034                 {
2035                         if (parameters[q+1])
2036                         {
2037                                 pars[q-end+1] = parameters[q+1];
2038                         }
2039                 }
2040                 if ((joins) && (parameters[1]))
2041                 {
2042                         if (pcnt > 1)
2043                         {
2044                                 pars[1] = blog2[j];
2045                         }
2046                         else
2047                         {
2048                                 pars[1] = NULL;
2049                         }
2050                 }
2051                 /* repeatedly call the function with the hacked parameter list */
2052                 if ((joins) && (pcnt > 1))
2053                 {
2054                         if (pars[1])
2055                         {
2056                                 // pars[1] already set up and containing key from blog2[j]
2057                                 fn(pars,2,u);
2058                         }
2059                         else
2060                         {
2061                                 pars[1] = parameters[1];
2062                                 fn(pars,2,u);
2063                         }
2064                 }
2065                 else
2066                 {
2067                         fn(pars,pcnt-(end-start),u);
2068                 }
2069         }
2070
2071         return 1;
2072 }
2073
2074
2075
2076 void kill_link(userrec *user,const char* r)
2077 {
2078         user_hash::iterator iter = clientlist.find(user->nick);
2079
2080         char reason[MAXBUF];
2081
2082         strncpy(reason,r,MAXBUF);
2083
2084         if (strlen(reason)>MAXQUIT)
2085         {
2086                 reason[MAXQUIT-1] = '\0';
2087         }
2088
2089         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2090         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2091         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2092
2093         /* bugfix, cant close() a nonblocking socket (sux!) */
2094         if (user->registered == 7) {
2095                 FOREACH_MOD OnUserQuit(user);
2096                 WriteCommonExcept(user,"QUIT :%s",reason);
2097
2098                 // Q token must go to ALL servers!!!
2099                 char buffer[MAXBUF];
2100                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2101                 NetSendToAll(buffer);
2102         }
2103
2104         FOREACH_MOD OnUserDisconnect(user);
2105
2106         if (user->fd > -1)
2107         {
2108                 shutdown(user->fd,2);
2109                 close(user->fd);
2110         }
2111
2112         if (user->registered == 7) {
2113                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2114                 AddWhoWas(user);
2115         }
2116
2117         if (user->registered == 7) {
2118                 purge_empty_chans(user);
2119         }
2120
2121         if (iter != clientlist.end())
2122         {
2123                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2124                 if ((iter->second) && (user->registered == 7)) {
2125                         if (iter->second) delete iter->second;
2126                 }
2127                 clientlist.erase(iter);
2128         }
2129 }
2130
2131 void kill_link_silent(userrec *user,const char* r)
2132 {
2133         user_hash::iterator iter = clientlist.find(user->nick);
2134
2135         char reason[MAXBUF];
2136
2137         strncpy(reason,r,MAXBUF);
2138
2139         if (strlen(reason)>MAXQUIT)
2140         {
2141                 reason[MAXQUIT-1] = '\0';
2142         }
2143
2144         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2145         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2146         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2147
2148         /* bugfix, cant close() a nonblocking socket (sux!) */
2149         if (user->registered == 7) {
2150                 FOREACH_MOD OnUserQuit(user);
2151                 WriteCommonExcept(user,"QUIT :%s",reason);
2152
2153                 // Q token must go to ALL servers!!!
2154                 char buffer[MAXBUF];
2155                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2156                 NetSendToAll(buffer);
2157         }
2158
2159         FOREACH_MOD OnUserDisconnect(user);
2160
2161         if (user->fd > -1)
2162         {
2163                 shutdown(user->fd,2);
2164                 close(user->fd);
2165         }
2166
2167         if (user->registered == 7) {
2168                 purge_empty_chans(user);
2169         }
2170
2171         if (iter != clientlist.end())
2172         {
2173                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2174                 if ((iter->second) && (user->registered == 7)) {
2175                         if (iter->second) delete iter->second;
2176                 }
2177                 clientlist.erase(iter);
2178         }
2179 }
2180
2181
2182
2183 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2184
2185 char* Passwd(userrec *user)
2186 {
2187         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2188         {
2189                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2190                 {
2191                         return i->pass;
2192                 }
2193         }
2194         return "";
2195 }
2196
2197 bool IsDenied(userrec *user)
2198 {
2199         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2200         {
2201                 if (match(user->host,i->host) && (i->type == CC_DENY))
2202                 {
2203                         return true;
2204                 }
2205         }
2206         return false;
2207 }
2208
2209
2210
2211
2212 /* sends out an error notice to all connected clients (not to be used
2213  * lightly!) */
2214
2215 void send_error(char *s)
2216 {
2217         log(DEBUG,"send_error: %s",s);
2218         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2219         {
2220                 if (isnick(i->second->nick))
2221                 {
2222                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2223                 }
2224                 else
2225                 {
2226                         // fix - unregistered connections receive ERROR, not NOTICE
2227                         Write(i->second->fd,"ERROR :%s",s);
2228                 }
2229         }
2230 }
2231
2232 void Error(int status)
2233 {
2234         signal (SIGALRM, SIG_IGN);
2235         signal (SIGPIPE, SIG_IGN);
2236         signal (SIGTERM, SIG_IGN);
2237         signal (SIGABRT, SIG_IGN);
2238         signal (SIGSEGV, SIG_IGN);
2239         signal (SIGURG, SIG_IGN);
2240         signal (SIGKILL, SIG_IGN);
2241         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2242         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2243         Exit(status);
2244 }
2245
2246
2247 int main(int argc, char **argv)
2248 {
2249         Start();
2250         srand(time(NULL));
2251         log(DEBUG,"*** InspIRCd starting up!");
2252         if (!FileExists(CONFIG_FILE))
2253         {
2254                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2255                 log(DEFAULT,"main: no config");
2256                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2257                 Exit(ERROR);
2258         }
2259         if (argc > 1) {
2260                 for (int i = 1; i < argc; i++)
2261                 {
2262                         if (!strcmp(argv[i],"-nofork")) {
2263                                 nofork = true;
2264                         }
2265                         if (!strcmp(argv[i],"-wait")) {
2266                                 sleep(6);
2267                         }
2268                         if (!strcmp(argv[i],"-nolimit")) {
2269                                 unlimitcore = true;
2270                         }
2271                 }
2272         }
2273         strlcpy(MyExecutable,argv[0],MAXBUF);
2274
2275         if (InspIRCd() == ERROR)
2276         {
2277                 log(DEFAULT,"main: daemon function bailed");
2278                 printf("ERROR: could not initialise. Shutting down.\n");
2279                 Exit(ERROR);
2280         }
2281         Exit(TRUE);
2282         return 0;
2283 }
2284
2285 template<typename T> inline string ConvToStr(const T &in)
2286 {
2287         stringstream tmp;
2288         if (!(tmp << in)) return string();
2289         return tmp.str();
2290 }
2291
2292 /* re-allocates a nick in the user_hash after they change nicknames,
2293  * returns a pointer to the new user as it may have moved */
2294
2295 userrec* ReHashNick(char* Old, char* New)
2296 {
2297         //user_hash::iterator newnick;
2298         user_hash::iterator oldnick = clientlist.find(Old);
2299
2300         log(DEBUG,"ReHashNick: %s %s",Old,New);
2301
2302         if (!strcasecmp(Old,New))
2303         {
2304                 log(DEBUG,"old nick is new nick, skipping");
2305                 return oldnick->second;
2306         }
2307
2308         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2309
2310         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2311
2312         clientlist[New] = new userrec();
2313         clientlist[New] = oldnick->second;
2314         clientlist.erase(oldnick);
2315
2316         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2317
2318         return clientlist[New];
2319 }
2320
2321 /* adds or updates an entry in the whowas list */
2322 void AddWhoWas(userrec* u)
2323 {
2324         user_hash::iterator iter = whowas.find(u->nick);
2325         userrec *a = new userrec();
2326         strlcpy(a->nick,u->nick,NICKMAX);
2327         strlcpy(a->ident,u->ident,64);
2328         strlcpy(a->dhost,u->dhost,256);
2329         strlcpy(a->host,u->host,256);
2330         strlcpy(a->fullname,u->fullname,128);
2331         strlcpy(a->server,u->server,256);
2332         a->signon = u->signon;
2333
2334         /* MAX_WHOWAS:   max number of /WHOWAS items
2335          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2336          *               can be replaced by a newer one
2337          */
2338
2339         if (iter == whowas.end())
2340         {
2341                 if (whowas.size() == WHOWAS_MAX)
2342                 {
2343                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2344                         {
2345                                 // 3600 seconds in an hour ;)
2346                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2347                                 {
2348                                         if (i->second) delete i->second;
2349                                         i->second = a;
2350                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2351                                         return;
2352                                 }
2353                         }
2354                 }
2355                 else
2356                 {
2357                         log(DEBUG,"added fresh WHOWAS entry");
2358                         whowas[a->nick] = a;
2359                 }
2360         }
2361         else
2362         {
2363                 log(DEBUG,"updated WHOWAS entry");
2364                 if (iter->second) delete iter->second;
2365                 iter->second = a;
2366         }
2367 }
2368
2369
2370 /* add a client connection to the sockets list */
2371 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2372 {
2373         string tempnick;
2374         char tn2[MAXBUF];
2375         user_hash::iterator iter;
2376
2377         tempnick = ConvToStr(socket) + "-unknown";
2378         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2379
2380         iter = clientlist.find(tempnick);
2381
2382         if (iter != clientlist.end()) return;
2383
2384         /*
2385          * It is OK to access the value here this way since we know
2386          * it exists, we just created it above.
2387          *
2388          * At NO other time should you access a value in a map or a
2389          * hash_map this way.
2390          */
2391         clientlist[tempnick] = new userrec();
2392
2393         NonBlocking(socket);
2394         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2395
2396         clientlist[tempnick]->fd = socket;
2397         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2398         strncpy(clientlist[tempnick]->host, host,160);
2399         strncpy(clientlist[tempnick]->dhost, host,160);
2400         strncpy(clientlist[tempnick]->server, ServerName,256);
2401         strncpy(clientlist[tempnick]->ident, "unknown",12);
2402         clientlist[tempnick]->registered = 0;
2403         clientlist[tempnick]->signon = TIME+dns_timeout;
2404         clientlist[tempnick]->lastping = 1;
2405         clientlist[tempnick]->port = port;
2406         strncpy(clientlist[tempnick]->ip,ip,32);
2407
2408         // set the registration timeout for this user
2409         unsigned long class_regtimeout = 90;
2410         int class_flood = 0;
2411
2412         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2413         {
2414                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2415                 {
2416                         class_regtimeout = (unsigned long)i->registration_timeout;
2417                         class_flood = i->flood;
2418                         clientlist[tempnick]->pingmax = i->pingtime;
2419                         break;
2420                 }
2421         }
2422
2423         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2424         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2425         clientlist[tempnick]->flood = class_flood;
2426
2427         for (int i = 0; i < MAXCHANS; i++)
2428         {
2429                 clientlist[tempnick]->chans[i].channel = NULL;
2430                 clientlist[tempnick]->chans[i].uc_modes = 0;
2431         }
2432
2433         if (clientlist.size() == MAXCLIENTS)
2434                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2435
2436
2437         char* e = matches_exception(ip);
2438         if (!e)
2439         {
2440                 char* r = matches_zline(ip);
2441                 if (r)
2442                 {
2443                         char reason[MAXBUF];
2444                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2445                         kill_link(clientlist[tempnick],reason);
2446                 }
2447         }
2448 }
2449
2450 // this function counts all users connected, wether they are registered or NOT.
2451 int usercnt(void)
2452 {
2453         return clientlist.size();
2454 }
2455
2456 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2457 int registered_usercount(void)
2458 {
2459         int c = 0;
2460         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2461         {
2462                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2463         }
2464         return c;
2465 }
2466
2467 int usercount_invisible(void)
2468 {
2469         int c = 0;
2470
2471         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2472         {
2473                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2474         }
2475         return c;
2476 }
2477
2478 int usercount_opers(void)
2479 {
2480         int c = 0;
2481
2482         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2483         {
2484                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2485         }
2486         return c;
2487 }
2488
2489 int usercount_unknown(void)
2490 {
2491         int c = 0;
2492
2493         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2494         {
2495                 if ((i->second->fd) && (i->second->registered != 7))
2496                         c++;
2497         }
2498         return c;
2499 }
2500
2501 long chancount(void)
2502 {
2503         return chanlist.size();
2504 }
2505
2506 long count_servs(void)
2507 {
2508         int c = 0;
2509         for (int i = 0; i < 32; i++)
2510         {
2511                 if (me[i] != NULL)
2512                 {
2513                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2514                         {
2515                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2516                                 {
2517                                         c++;
2518                                 }
2519                         }
2520                 }
2521         }
2522         return c;
2523 }
2524
2525 long servercount(void)
2526 {
2527         return count_servs()+1;
2528 }
2529
2530 long local_count()
2531 {
2532         int c = 0;
2533         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2534         {
2535                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2536         }
2537         return c;
2538 }
2539
2540
2541 void ShowMOTD(userrec *user)
2542 {
2543         std::string WholeMOTD = "";
2544         if (!MOTD.size())
2545         {
2546                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2547                 return;
2548         }
2549         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2550         for (int i = 0; i != MOTD.size(); i++)
2551         {
2552                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2553         }
2554         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2555         // only one write operation
2556         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2557
2558 }
2559
2560 void ShowRULES(userrec *user)
2561 {
2562         if (!RULES.size())
2563         {
2564                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2565                 return;
2566         }
2567         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2568         for (int i = 0; i != RULES.size(); i++)
2569         {
2570                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2571         }
2572         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2573 }
2574
2575 /* shows the message of the day, and any other on-logon stuff */
2576 void FullConnectUser(userrec* user)
2577 {
2578         user->registered = 7;
2579         user->idle_lastmsg = TIME;
2580         log(DEBUG,"ConnectUser: %s",user->nick);
2581
2582         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2583         {
2584                 kill_link(user,"Invalid password");
2585                 return;
2586         }
2587         if (IsDenied(user))
2588         {
2589                 kill_link(user,"Unauthorised connection");
2590                 return;
2591         }
2592
2593         char match_against[MAXBUF];
2594         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2595         char* e = matches_exception(match_against);
2596         if (!e)
2597         {
2598                 char* r = matches_gline(match_against);
2599                 if (r)
2600                 {
2601                         char reason[MAXBUF];
2602                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2603                         kill_link_silent(user,reason);
2604                         return;
2605                 }
2606                 r = matches_kline(user->host);
2607                 if (r)
2608                 {
2609                         char reason[MAXBUF];
2610                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2611                         kill_link_silent(user,reason);
2612                         return;
2613                 }
2614         }
2615
2616         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2617         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2618         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2619         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2620         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2621         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2622         std::stringstream v;
2623         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2624         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2625         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2626         v << std::string(Network);
2627         std::string data005 = v.str();
2628         FOREACH_MOD On005Numeric(data005);
2629         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2630         // so i'd better split it :)
2631         std::stringstream out(data005);
2632         std::string token = "";
2633         std::string line5 = "";
2634         int token_counter = 0;
2635         while (!out.eof())
2636         {
2637                 out >> token;
2638                 line5 = line5 + token + " ";
2639                 token_counter++;
2640                 if ((token_counter >= 13) || (out.eof() == true))
2641                 {
2642                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2643                         line5 = "";
2644                         token_counter = 0;
2645                 }
2646         }
2647         ShowMOTD(user);
2648         FOREACH_MOD OnUserConnect(user);
2649         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2650
2651         char buffer[MAXBUF];
2652         snprintf(buffer,MAXBUF,"N %lu %s %s %s %s +%s %s %s :%s",(unsigned long)user->age,user->nick,user->host,user->dhost,user->ident,user->modes,user->ip,ServerName,user->fullname);
2653         NetSendToAll(buffer);
2654 }
2655
2656
2657 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2658 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2659 // registration timeout maximum seconds)
2660 bool AllModulesReportReady(userrec* user)
2661 {
2662         for (int i = 0; i <= MODCOUNT; i++)
2663         {
2664                 int res = modules[i]->OnCheckReady(user);
2665                         if (!res)
2666                                 return false;
2667         }
2668         return true;
2669 }
2670
2671 /* shows the message of the day, and any other on-logon stuff */
2672 void ConnectUser(userrec *user)
2673 {
2674         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2675         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2676         {
2677                 FullConnectUser(user);
2678         }
2679 }
2680
2681 std::string GetVersionString()
2682 {
2683         char Revision[] = "$Revision$";
2684         char versiondata[MAXBUF];
2685         char *s1 = Revision;
2686         char *savept;
2687         char *v2 = strtok_r(s1," ",&savept);
2688         s1 = savept;
2689         v2 = strtok_r(s1," ",&savept);
2690         s1 = savept;
2691         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s (O=%lu)",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2692
2693 }
2694
2695 void handle_version(char **parameters, int pcnt, userrec *user)
2696 {
2697         if (!pcnt)
2698         {
2699                 WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2700         }
2701         else
2702         {
2703                 for (int j = 0; j < 32; j++)
2704                 {
2705                         if (me[j] != NULL)
2706                         {
2707                                 for (int x = 0; x < me[j]->connectors.size(); x++)
2708                                 {
2709                                         if (match(me[j]->connectors[x].GetServerName().c_str(),parameters[0]))
2710                                         {
2711                                                 WriteServ(user->fd,"351 %s :%s",user->nick,me[j]->connectors[x].GetVersionString().c_str());
2712                                                 return;
2713                                         }
2714                                 }
2715                         }
2716                 }
2717                 WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2718         }
2719         return;
2720 }
2721
2722
2723 // calls a handler function for a command
2724
2725 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2726 {
2727                 for (int i = 0; i < cmdlist.size(); i++)
2728                 {
2729                         if (!strcasecmp(cmdlist[i].command,commandname))
2730                         {
2731                                 if (cmdlist[i].handler_function)
2732                                 {
2733                                         if (pcnt>=cmdlist[i].min_params)
2734                                         {
2735                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2736                                                 {
2737                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2738                                                 }
2739                                         }
2740                                 }
2741                         }
2742                 }
2743 }
2744
2745 void DoSplitEveryone()
2746 {
2747         bool go_again = true;
2748         while (go_again)
2749         {
2750                 go_again = false;
2751                 for (int i = 0; i < 32; i++)
2752                 {
2753                         if (me[i] != NULL)
2754                         {
2755                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2756                                 {
2757                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2758                                         {
2759                                                 j->routes.clear();
2760                                                 j->CloseConnection();
2761                                                 me[i]->connectors.erase(j);
2762                                                 go_again = true;
2763                                                 break;
2764                                         }
2765                                 }
2766                         }
2767                 }
2768         }
2769         log(DEBUG,"Removed server. Will remove clients...");
2770         // iterate through the userlist and remove all users on this server.
2771         // because we're dealing with a mesh, we dont have to deal with anything
2772         // "down-route" from this server (nice huh)
2773         go_again = true;
2774         char reason[MAXBUF];
2775         while (go_again)
2776         {
2777                 go_again = false;
2778                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2779                 {
2780                         if (strcasecmp(u->second->server,ServerName))
2781                         {
2782                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2783                                 kill_link(u->second,reason);
2784                                 go_again = true;
2785                                 break;
2786                         }
2787                 }
2788         }
2789 }
2790
2791
2792
2793 char islast(const char* s)
2794 {
2795         char c = '`';
2796         for (int j = 0; j < 32; j++)
2797         {
2798                 if (me[j] != NULL)
2799                 {
2800                         for (int k = 0; k < me[j]->connectors.size(); k++)
2801                         {
2802                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2803                                 {
2804                                         c = '|';
2805                                 }
2806                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2807                                 {
2808                                         c = '`';
2809                                 }
2810                         }
2811                 }
2812         }
2813         return c;
2814 }
2815
2816 long map_count(const char* s)
2817 {
2818         int c = 0;
2819         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2820         {
2821                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2822         }
2823         return c;
2824 }
2825
2826
2827 void force_nickchange(userrec* user,const char* newnick)
2828 {
2829         char nick[MAXBUF];
2830         int MOD_RESULT = 0;
2831
2832         strcpy(nick,"");
2833
2834         FOREACH_RESULT(OnUserPreNick(user,newnick));
2835         if (MOD_RESULT) {
2836                 kill_link(user,"Nickname collision");
2837                 return;
2838         }
2839         if (matches_qline(newnick))
2840         {
2841                 kill_link(user,"Nickname collision");
2842                 return;
2843         }
2844
2845         if (user)
2846         {
2847                 if (newnick)
2848                 {
2849                         strncpy(nick,newnick,MAXBUF);
2850                 }
2851                 if (user->registered == 7)
2852                 {
2853                         char* pars[1];
2854                         pars[0] = nick;
2855                         handle_nick(pars,1,user);
2856                 }
2857         }
2858 }
2859
2860
2861 int process_parameters(char **command_p,char *parameters)
2862 {
2863         int j = 0;
2864         int q = strlen(parameters);
2865         if (!q)
2866         {
2867                 /* no parameters, command_p invalid! */
2868                 return 0;
2869         }
2870         if (parameters[0] == ':')
2871         {
2872                 command_p[0] = parameters+1;
2873                 return 1;
2874         }
2875         if (q)
2876         {
2877                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2878                 {
2879                         /* only one parameter */
2880                         command_p[0] = parameters;
2881                         if (parameters[0] == ':')
2882                         {
2883                                 if (strchr(parameters,' ') != NULL)
2884                                 {
2885                                         command_p[0]++;
2886                                 }
2887                         }
2888                         return 1;
2889                 }
2890         }
2891         command_p[j++] = parameters;
2892         for (int i = 0; i <= q; i++)
2893         {
2894                 if (parameters[i] == ' ')
2895                 {
2896                         command_p[j++] = parameters+i+1;
2897                         parameters[i] = '\0';
2898                         if (command_p[j-1][0] == ':')
2899                         {
2900                                 *command_p[j-1]++; /* remove dodgy ":" */
2901                                 break;
2902                                 /* parameter like this marks end of the sequence */
2903                         }
2904                 }
2905         }
2906         return j; /* returns total number of items in the list */
2907 }
2908
2909 void process_command(userrec *user, char* cmd)
2910 {
2911         char *parameters;
2912         char *command;
2913         char *command_p[127];
2914         char p[MAXBUF], temp[MAXBUF];
2915         int j, items, cmd_found;
2916
2917         for (int i = 0; i < 127; i++)
2918                 command_p[i] = NULL;
2919
2920         if (!user)
2921         {
2922                 return;
2923         }
2924         if (!cmd)
2925         {
2926                 return;
2927         }
2928         if (!cmd[0])
2929         {
2930                 return;
2931         }
2932
2933         int total_params = 0;
2934         if (strlen(cmd)>2)
2935         {
2936                 for (int q = 0; q < strlen(cmd)-1; q++)
2937                 {
2938                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2939                         {
2940                                 total_params++;
2941                                 // found a 'trailing', we dont count them after this.
2942                                 break;
2943                         }
2944                         if (cmd[q] == ' ')
2945                                 total_params++;
2946                 }
2947         }
2948
2949         // another phidjit bug...
2950         if (total_params > 126)
2951         {
2952                 *(strchr(cmd,' ')) = '\0';
2953                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
2954                 return;
2955         }
2956
2957         strlcpy(temp,cmd,MAXBUF);
2958
2959         std::string tmp = cmd;
2960         for (int i = 0; i <= MODCOUNT; i++)
2961         {
2962                 std::string oldtmp = tmp;
2963                 modules[i]->OnServerRaw(tmp,true,user);
2964                 if (oldtmp != tmp)
2965                 {
2966                         log(DEBUG,"A Module changed the input string!");
2967                         log(DEBUG,"New string: %s",tmp.c_str());
2968                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2969                         break;
2970                 }
2971         }
2972         strlcpy(cmd,tmp.c_str(),MAXBUF);
2973         strlcpy(temp,cmd,MAXBUF);
2974
2975         if (!strchr(cmd,' '))
2976         {
2977                 /* no parameters, lets skip the formalities and not chop up
2978                  * the string */
2979                 log(DEBUG,"About to preprocess command with no params");
2980                 items = 0;
2981                 command_p[0] = NULL;
2982                 parameters = NULL;
2983                 for (int i = 0; i <= strlen(cmd); i++)
2984                 {
2985                         cmd[i] = toupper(cmd[i]);
2986                 }
2987                 command = cmd;
2988         }
2989         else
2990         {
2991                 strcpy(cmd,"");
2992                 j = 0;
2993                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2994                 for (int i = 0; i < strlen(temp); i++)
2995                 {
2996                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2997                         {
2998                                 cmd[j++] = temp[i];
2999                                 cmd[j] = 0;
3000                         }
3001                 }
3002                 /* split the full string into a command plus parameters */
3003                 parameters = p;
3004                 strcpy(p," ");
3005                 command = cmd;
3006                 if (strchr(cmd,' '))
3007                 {
3008                         for (int i = 0; i <= strlen(cmd); i++)
3009                         {
3010                                 /* capitalise the command ONLY, leave params intact */
3011                                 cmd[i] = toupper(cmd[i]);
3012                                 /* are we nearly there yet?! :P */
3013                                 if (cmd[i] == ' ')
3014                                 {
3015                                         command = cmd;
3016                                         parameters = cmd+i+1;
3017                                         cmd[i] = '\0';
3018                                         break;
3019                                 }
3020                         }
3021                 }
3022                 else
3023                 {
3024                         for (int i = 0; i <= strlen(cmd); i++)
3025                         {
3026                                 cmd[i] = toupper(cmd[i]);
3027                         }
3028                 }
3029
3030         }
3031         cmd_found = 0;
3032
3033         if (strlen(command)>MAXCOMMAND)
3034         {
3035                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
3036                 return;
3037         }
3038
3039         for (int x = 0; x < strlen(command); x++)
3040         {
3041                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
3042                 {
3043                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
3044                         {
3045                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
3046                                 {
3047                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3048                                         return;
3049                                 }
3050                         }
3051                 }
3052         }
3053
3054         for (int i = 0; i != cmdlist.size(); i++)
3055         {
3056                 if (cmdlist[i].command[0])
3057                 {
3058                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3059                         {
3060                                 if (parameters)
3061                                 {
3062                                         if (parameters[0])
3063                                         {
3064                                                 items = process_parameters(command_p,parameters);
3065                                         }
3066                                         else
3067                                         {
3068                                                 items = 0;
3069                                                 command_p[0] = NULL;
3070                                         }
3071                                 }
3072                                 else
3073                                 {
3074                                         items = 0;
3075                                         command_p[0] = NULL;
3076                                 }
3077
3078                                 if (user)
3079                                 {
3080                                         /* activity resets the ping pending timer */
3081                                         user->nping = TIME + user->pingmax;
3082                                         if ((items) < cmdlist[i].min_params)
3083                                         {
3084                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3085                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3086                                                 return;
3087                                         }
3088                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3089                                         {
3090                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3091                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3092                                                 cmd_found = 1;
3093                                                 return;
3094                                         }
3095                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3096                                         {
3097                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3098                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3099                                                 cmd_found = 1;
3100                                                 return;
3101                                         }
3102                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3103                                          * deny command! */
3104                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3105                                         {
3106                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3107                                                 {
3108                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3109                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3110                                                         return;
3111                                                 }
3112                                         }
3113                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3114                                         {
3115                                                 char* mycmd;
3116                                                 char* savept2;
3117                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3118                                                 while (mycmd)
3119                                                 {
3120                                                         if (!strcasecmp(mycmd,command))
3121                                                         {
3122                                                                 // command is disabled!
3123                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3124                                                                 return;
3125                                                         }
3126                                                         mycmd = strtok_r(NULL," ",&savept2);
3127                                                 }
3128
3129
3130                                         }
3131                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3132                                         {
3133                                                 if (cmdlist[i].handler_function)
3134                                                 {
3135
3136                                                         /* ikky /stats counters */
3137                                                         if (temp)
3138                                                         {
3139                                                                 if (user)
3140                                                                 {
3141                                                                         user->bytes_in += strlen(temp);
3142                                                                         user->cmds_in++;
3143                                                                         user->bytes_out+=strlen(temp);
3144                                                                         user->cmds_out++;
3145                                                                 }
3146                                                                 cmdlist[i].use_count++;
3147                                                                 cmdlist[i].total_bytes+=strlen(temp);
3148                                                         }
3149
3150                                                         int MOD_RESULT = 0;
3151                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3152                                                         if (MOD_RESULT == 1) {
3153                                                                 return;
3154                                                         }
3155
3156                                                         /* WARNING: nothing may come after the
3157                                                          * command handler call, as the handler
3158                                                          * may free the user structure! */
3159
3160                                                         cmdlist[i].handler_function(command_p,items,user);
3161                                                 }
3162                                                 return;
3163                                         }
3164                                         else
3165                                         {
3166                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3167                                                 return;
3168                                         }
3169                                 }
3170                                 cmd_found = 1;
3171                         }
3172                 }
3173         }
3174         if ((!cmd_found) && (user))
3175         {
3176                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3177         }
3178 }
3179
3180
3181 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3182 {
3183         command_t comm;
3184         /* create the command and push it onto the table */
3185         strlcpy(comm.command,cmd,MAXBUF);
3186         strlcpy(comm.source,source,MAXBUF);
3187         comm.handler_function = f;
3188         comm.flags_needed = flags;
3189         comm.min_params = minparams;
3190         comm.use_count = 0;
3191         comm.total_bytes = 0;
3192         cmdlist.push_back(comm);
3193         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3194 }
3195
3196 bool removecommands(const char* source)
3197 {
3198         bool go_again = true;
3199         while (go_again)
3200         {
3201                 go_again = false;
3202                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3203                 {
3204                         if (!strcmp(i->source,source))
3205                         {
3206                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3207                                 cmdlist.erase(i);
3208                                 go_again = true;
3209                                 break;
3210                         }
3211                 }
3212         }
3213         return true;
3214 }
3215
3216 void SetupCommandTable(void)
3217 {
3218         createcommand("USER",handle_user,0,4,"<core>");
3219         createcommand("NICK",handle_nick,0,1,"<core>");
3220         createcommand("QUIT",handle_quit,0,0,"<core>");
3221         createcommand("VERSION",handle_version,0,0,"<core>");
3222         createcommand("PING",handle_ping,0,1,"<core>");
3223         createcommand("PONG",handle_pong,0,1,"<core>");
3224         createcommand("ADMIN",handle_admin,0,0,"<core>");
3225         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3226         createcommand("INFO",handle_info,0,0,"<core>");
3227         createcommand("TIME",handle_time,0,0,"<core>");
3228         createcommand("WHOIS",handle_whois,0,1,"<core>");
3229         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3230         createcommand("NOTICE",handle_notice,0,2,"<core>");
3231         createcommand("JOIN",handle_join,0,1,"<core>");
3232         createcommand("NAMES",handle_names,0,0,"<core>");
3233         createcommand("PART",handle_part,0,1,"<core>");
3234         createcommand("KICK",handle_kick,0,2,"<core>");
3235         createcommand("MODE",handle_mode,0,1,"<core>");
3236         createcommand("TOPIC",handle_topic,0,1,"<core>");
3237         createcommand("WHO",handle_who,0,1,"<core>");
3238         createcommand("MOTD",handle_motd,0,0,"<core>");
3239         createcommand("RULES",handle_rules,0,0,"<core>");
3240         createcommand("OPER",handle_oper,0,2,"<core>");
3241         createcommand("LIST",handle_list,0,0,"<core>");
3242         createcommand("DIE",handle_die,'o',1,"<core>");
3243         createcommand("RESTART",handle_restart,'o',1,"<core>");
3244         createcommand("KILL",handle_kill,'o',2,"<core>");
3245         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3246         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3247         createcommand("STATS",handle_stats,0,1,"<core>");
3248         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3249         createcommand("AWAY",handle_away,0,0,"<core>");
3250         createcommand("ISON",handle_ison,0,0,"<core>");
3251         createcommand("SUMMON",handle_summon,0,0,"<core>");
3252         createcommand("USERS",handle_users,0,0,"<core>");
3253         createcommand("INVITE",handle_invite,0,2,"<core>");
3254         createcommand("PASS",handle_pass,0,1,"<core>");
3255         createcommand("TRACE",handle_trace,'o',0,"<core>");
3256         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3257         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3258         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3259         createcommand("MODULES",handle_modules,0,0,"<core>");
3260         createcommand("LINKS",handle_links,0,0,"<core>");
3261         createcommand("MAP",handle_map,0,0,"<core>");
3262         createcommand("KLINE",handle_kline,'o',1,"<core>");
3263         createcommand("GLINE",handle_gline,'o',1,"<core>");
3264         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3265         createcommand("QLINE",handle_qline,'o',1,"<core>");
3266         createcommand("ELINE",handle_eline,'o',1,"<core>");
3267         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3268         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3269         createcommand("SERVER",handle_server,0,0,"<core>");
3270 }
3271
3272 void process_buffer(const char* cmdbuf,userrec *user)
3273 {
3274         if (!user)
3275         {
3276                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3277                 return;
3278         }
3279         char cmd[MAXBUF];
3280         if (!cmdbuf)
3281         {
3282                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3283                 return;
3284         }
3285         if (!cmdbuf[0])
3286         {
3287                 return;
3288         }
3289         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3290
3291         strlcpy(cmd,cmdbuf,MAXBUF);
3292         if (!cmd[0])
3293         {
3294                 return;
3295         }
3296         int sl = strlen(cmd)-1;
3297         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3298         {
3299                 cmd[sl] = '\0';
3300         }
3301         sl = strlen(cmd)-1;
3302         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3303         {
3304                 cmd[sl] = '\0';
3305         }
3306         sl = strlen(cmd)-1;
3307         while (cmd[sl] == ' ') // strip trailing spaces
3308         {
3309                 cmd[sl] = '\0';
3310                 sl = strlen(cmd)-1;
3311         }
3312
3313         if (!cmd[0])
3314         {
3315                 return;
3316         }
3317         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3318         tidystring(cmd);
3319         if ((user) && (cmd))
3320         {
3321                 process_command(user,cmd);
3322         }
3323 }
3324
3325 void DoSync(serverrec* serv, char* tcp_host)
3326 {
3327         char data[MAXBUF];
3328         log(DEBUG,"Sending sync");
3329         // send start of sync marker: Y <timestamp>
3330         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3331         // except the ones its receiving it from.
3332         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3333         serv->SendPacket(data,tcp_host);
3334         // send users and channels
3335
3336         NetSendMyRoutingTable();
3337
3338         // send all routing table and uline voodoo. The ordering of these commands is IMPORTANT!
3339         for (int j = 0; j < 32; j++)
3340         {
3341                 if (me[j] != NULL)
3342                 {
3343                         for (int k = 0; k < me[j]->connectors.size(); k++)
3344                         {
3345                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3346                                 {
3347                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3348                                         serv->SendPacket(data,tcp_host);
3349                                 }
3350                         }
3351                 }
3352         }
3353
3354         // send our version for the remote side to cache
3355         snprintf(data,MAXBUF,"v %s %s",ServerName,GetVersionString().c_str());
3356         serv->SendPacket(data,tcp_host);
3357
3358         // sync the users and channels, give the modules a look-in.
3359         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3360         {
3361                 snprintf(data,MAXBUF,"N %lu %s %s %s %s +%s %s %s :%s",(unsigned long)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);
3362                 serv->SendPacket(data,tcp_host);
3363                 if (strchr(u->second->modes,'o'))
3364                 {
3365                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3366                         serv->SendPacket(data,tcp_host);
3367                 }
3368                 for (int i = 0; i <= MODCOUNT; i++)
3369                 {
3370                         string_list l = modules[i]->OnUserSync(u->second);
3371                         for (int j = 0; j < l.size(); j++)
3372                         {
3373                                 strlcpy(data,l[j].c_str(),MAXBUF);
3374                                 serv->SendPacket(data,tcp_host);
3375                         }
3376                 }
3377                 char* chl = chlist(u->second);
3378                 if (strcmp(chl,""))
3379                 {
3380                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3381                         serv->SendPacket(data,tcp_host);
3382                 }
3383         }
3384         // send channel modes, topics etc...
3385         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3386         {
3387                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3388                 serv->SendPacket(data,tcp_host);
3389                 for (int i = 0; i <= MODCOUNT; i++)
3390                 {
3391                         string_list l = modules[i]->OnChannelSync(c->second);
3392                         for (int j = 0; j < l.size(); j++)
3393                         {
3394                                 strlcpy(data,l[j].c_str(),MAXBUF);
3395                                 serv->SendPacket(data,tcp_host);
3396                         }
3397                 }
3398                 if (c->second->topic[0])
3399                 {
3400                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3401                         serv->SendPacket(data,tcp_host);
3402                 }
3403                 // send current banlist
3404
3405                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3406                 {
3407                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3408                         serv->SendPacket(data,tcp_host);
3409                 }
3410         }
3411         // sync global zlines, glines, etc
3412         sync_xlines(serv,tcp_host);
3413
3414         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3415         serv->SendPacket(data,tcp_host);
3416         log(DEBUG,"Sent sync");
3417         // ircd sends its serverlist after the end of sync here
3418 }
3419
3420
3421 void NetSendMyRoutingTable()
3422 {
3423         // send out a line saying what is reachable to us.
3424         // E.g. if A is linked to B C and D, send out:
3425         // $ A B C D
3426         // if its only linked to B and D send out:
3427         // $ A B D
3428         // if it has no links, dont even send out the line at all.
3429         char buffer[MAXBUF];
3430         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3431         bool sendit = false;
3432         for (int i = 0; i < 32; i++)
3433         {
3434                 if (me[i] != NULL)
3435                 {
3436                         for (int j = 0; j < me[i]->connectors.size(); j++)
3437                         {
3438                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3439                                 {
3440                                         strlcat(buffer," ",MAXBUF);
3441                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3442                                         sendit = true;
3443                                 }
3444                         }
3445                 }
3446         }
3447         if (sendit)
3448                 NetSendToAll(buffer);
3449 }
3450
3451
3452 void DoSplit(const char* params)
3453 {
3454         bool go_again = true;
3455         while (go_again)
3456         {
3457                 go_again = false;
3458                 for (int i = 0; i < 32; i++)
3459                 {
3460                         if (me[i] != NULL)
3461                         {
3462                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3463                                 {
3464                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3465                                         {
3466                                                 j->routes.clear();
3467                                                 j->CloseConnection();
3468                                                 me[i]->connectors.erase(j);
3469                                                 go_again = true;
3470                                                 break;
3471                                         }
3472                                 }
3473                         }
3474                 }
3475         }
3476         log(DEBUG,"Removed server. Will remove clients...");
3477         // iterate through the userlist and remove all users on this server.
3478         // because we're dealing with a mesh, we dont have to deal with anything
3479         // "down-route" from this server (nice huh)
3480         go_again = true;
3481         char reason[MAXBUF];
3482         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3483         while (go_again)
3484         {
3485                 go_again = false;
3486                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3487                 {
3488                         if (!strcasecmp(u->second->server,params))
3489                         {
3490                                 kill_link(u->second,reason);
3491                                 go_again = true;
3492                                 break;
3493                         }
3494                 }
3495         }
3496 }
3497
3498 // removes a server. Will NOT remove its users!
3499
3500 void RemoveServer(const char* name)
3501 {
3502         bool go_again = true;
3503         while (go_again)
3504         {
3505                 go_again = false;
3506                 for (int i = 0; i < 32; i++)
3507                 {
3508                         if (me[i] != NULL)
3509                         {
3510                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3511                                 {
3512                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3513                                         {
3514                                                 j->routes.clear();
3515                                                 j->CloseConnection();
3516                                                 me[i]->connectors.erase(j);
3517                                                 go_again = true;
3518                                                 break;
3519                                         }
3520                                 }
3521                         }
3522                 }
3523         }
3524 }
3525
3526
3527 char MODERR[MAXBUF];
3528
3529 char* ModuleError()
3530 {
3531         return MODERR;
3532 }
3533
3534 void erase_factory(int j)
3535 {
3536         int v = 0;
3537         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3538         {
3539                 if (v == j)
3540                 {
3541                         factory.erase(t);
3542                         factory.push_back(NULL);
3543                         return;
3544                 }
3545                 v++;
3546         }
3547 }
3548
3549 void erase_module(int j)
3550 {
3551         int v1 = 0;
3552         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3553         {
3554                 if (v1 == j)
3555                 {
3556                         delete *m;
3557                         modules.erase(m);
3558                         modules.push_back(NULL);
3559                         break;
3560                 }
3561                 v1++;
3562         }
3563         int v2 = 0;
3564         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3565         {
3566                 if (v2 == j)
3567                 {
3568                        module_names.erase(v);
3569                        break;
3570                 }
3571                 v2++;
3572         }
3573
3574 }
3575
3576 bool UnloadModule(const char* filename)
3577 {
3578         for (int j = 0; j != module_names.size(); j++)
3579         {
3580                 if (module_names[j] == std::string(filename))
3581                 {
3582                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3583                         {
3584                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3585                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3586                                 return false;
3587                         }
3588                         // found the module
3589                         log(DEBUG,"Deleting module...");
3590                         erase_module(j);
3591                         log(DEBUG,"Erasing module entry...");
3592                         erase_factory(j);
3593                         log(DEBUG,"Removing dependent commands...");
3594                         removecommands(filename);
3595                         log(DEFAULT,"Module %s unloaded",filename);
3596                         MODCOUNT--;
3597                         return true;
3598                 }
3599         }
3600         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3601         snprintf(MODERR,MAXBUF,"Module not loaded");
3602         return false;
3603 }
3604
3605 bool DirValid(char* dirandfile)
3606 {
3607         char work[MAXBUF];
3608         strlcpy(work,dirandfile,MAXBUF);
3609         int p = strlen(work);
3610         // we just want the dir
3611         while (strlen(work))
3612         {
3613                 if (work[p] == '/')
3614                 {
3615                         work[p] = '\0';
3616                         break;
3617                 }
3618                 work[p--] = '\0';
3619         }
3620         char buffer[MAXBUF], otherdir[MAXBUF];
3621         // Get the current working directory
3622         if( getcwd( buffer, MAXBUF ) == NULL )
3623                 return false;
3624         chdir(work);
3625         if( getcwd( otherdir, MAXBUF ) == NULL )
3626                 return false;
3627         chdir(buffer);
3628         if (strlen(otherdir) >= strlen(work))
3629         {
3630                 otherdir[strlen(work)] = '\0';
3631                 if (!strcmp(otherdir,work))
3632                 {
3633                         return true;
3634                 }
3635                 return false;
3636         }
3637         else return false;
3638 }
3639
3640 bool LoadModule(const char* filename)
3641 {
3642         char modfile[MAXBUF];
3643         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3644         if (!DirValid(modfile))
3645         {
3646                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3647                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3648                 return false;
3649         }
3650         log(DEBUG,"Loading module: %s",modfile);
3651         if (FileExists(modfile))
3652         {
3653                 for (int j = 0; j < module_names.size(); j++)
3654                 {
3655                         if (module_names[j] == std::string(filename))
3656                         {
3657                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3658                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3659                                 return false;
3660                         }
3661                 }
3662                 ircd_module* a = new ircd_module(modfile);
3663                 factory[MODCOUNT+1] = a;
3664                 if (factory[MODCOUNT+1]->LastError())
3665                 {
3666                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3667                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3668                         MODCOUNT--;
3669                         return false;
3670                 }
3671                 if (factory[MODCOUNT+1]->factory)
3672                 {
3673                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3674                         modules[MODCOUNT+1] = m;
3675                         /* save the module and the module's classfactory, if
3676                          * this isnt done, random crashes can occur :/ */
3677                         module_names.push_back(filename);
3678                 }
3679                 else
3680                 {
3681                         log(DEFAULT,"Unable to load %s",modfile);
3682                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3683                         return false;
3684                 }
3685         }
3686         else
3687         {
3688                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3689                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3690                 return false;
3691         }
3692         MODCOUNT++;
3693         return true;
3694 }
3695
3696 int InspIRCd(void)
3697 {
3698         struct sockaddr_in client,server;
3699         char addrs[MAXBUF][255];
3700         int incomingSockfd, result = TRUE;
3701         socklen_t length;
3702         int count = 0;
3703         int selectResult = 0, selectResult2 = 0;
3704         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3705         fd_set selectFds;
3706         timeval tv;
3707
3708         log_file = fopen("ircd.log","a+");
3709         if (!log_file)
3710         {
3711                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3712                 Exit(ERROR);
3713         }
3714
3715         log(DEFAULT,"$Id$");
3716         if (geteuid() == 0)
3717         {
3718                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3719                 Exit(ERROR);
3720                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3721         }
3722         SetupCommandTable();
3723         log(DEBUG,"InspIRCd: startup: default command table set up");
3724
3725         ReadConfig(true,NULL);
3726         if (DieValue[0])
3727         {
3728                 printf("WARNING: %s\n\n",DieValue);
3729                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3730                 exit(0);
3731         }
3732         log(DEBUG,"InspIRCd: startup: read config");
3733
3734         int clientportcount = 0, serverportcount = 0;
3735
3736         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3737         {
3738                 ConfValue("bind","port",count,configToken,&config_f);
3739                 ConfValue("bind","address",count,Addr,&config_f);
3740                 ConfValue("bind","type",count,Type,&config_f);
3741                 if (!strcmp(Type,"servers"))
3742                 {
3743                         char Default[MAXBUF];
3744                         strcpy(Default,"no");
3745                         ConfValue("bind","default",count,Default,&config_f);
3746                         if (strchr(Default,'y'))
3747                         {
3748                                 defaultRoute = serverportcount;
3749                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3750                         }
3751                         me[serverportcount] = new serverrec(ServerName,100L,false);
3752                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3753                         {
3754                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3755                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3756                         }
3757                         else
3758                         {
3759                                 serverportcount++;
3760                         }
3761                 }
3762                 else
3763                 {
3764                         ports[clientportcount] = atoi(configToken);
3765                         strlcpy(addrs[clientportcount],Addr,256);
3766                         clientportcount++;
3767                 }
3768                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3769         }
3770         portCount = clientportcount;
3771         UDPportCount = serverportcount;
3772
3773         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)UDPportCount);
3774         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3775
3776         printf("\n");
3777
3778         /* BugFix By Craig! :p */
3779         MODCOUNT = -1;
3780         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3781         {
3782                 ConfValue("module","name",count,configToken,&config_f);
3783                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3784                 if (!LoadModule(configToken))
3785                 {
3786                         log(DEFAULT,"Exiting due to a module loader error.");
3787                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3788                         Exit(0);
3789                 }
3790         }
3791         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3792
3793         startup_time = time(NULL);
3794
3795         char PID[MAXBUF];
3796         ConfValue("pid","file",0,PID,&config_f);
3797         // write once here, to try it out and make sure its ok
3798         WritePID(PID);
3799
3800         /* setup select call */
3801         FD_ZERO(&selectFds);
3802         log(DEBUG,"InspIRCd: startup: zero selects");
3803         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
3804
3805         for (count = 0; count < portCount; count++)
3806         {
3807                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3808                 {
3809                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
3810                         return(ERROR);
3811                 }
3812                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3813                 {
3814                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
3815                 }
3816                 else    /* well we at least bound to one socket so we'll continue */
3817                 {
3818                         boundPortCount++;
3819                 }
3820         }
3821
3822         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
3823
3824         /* if we didn't bind to anything then abort */
3825         if (boundPortCount == 0)
3826         {
3827                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3828                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
3829                 return (ERROR);
3830         }
3831
3832
3833         printf("\nInspIRCd is now running!\n");
3834
3835         if (nofork)
3836         {
3837                 log(VERBOSE,"Not forking as -nofork was specified");
3838         }
3839         else
3840         {
3841                 if (DaemonSeed() == ERROR)
3842                 {
3843                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3844                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3845                         Exit(ERROR);
3846                 }
3847         }
3848
3849         WritePID(PID);
3850
3851         length = sizeof (client);
3852         char udp_msg[MAXBUF],tcp_host[MAXBUF];
3853
3854         fd_set serverfds;
3855         timeval tvs;
3856         tvs.tv_usec = 10000L;
3857         tvs.tv_sec = 0;
3858         tv.tv_sec = 0;
3859         tv.tv_usec = 10000L;
3860         char data[10240];
3861         timeval tval;
3862         fd_set sfd;
3863         tval.tv_usec = 10000L;
3864         tval.tv_sec = 0;
3865         int total_in_this_set = 0;
3866         int v = 0;
3867         bool expire_run = false;
3868
3869         /* main loop, this never returns */
3870         for (;;)
3871         {
3872 #ifdef _POSIX_PRIORITY_SCHEDULING
3873                 sched_yield();
3874 #endif
3875                 // poll dns queue
3876                 dns_poll();
3877                 FD_ZERO(&sfd);
3878
3879                 // we only read time() once per iteration rather than tons of times!
3880                 TIME = time(NULL);
3881
3882                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3883                 // them in a list, then reap the list every second or so.
3884                 if (((TIME % 5) == 0) && (!expire_run))
3885                 {
3886                         expire_lines();
3887                         FOREACH_MOD OnBackgroundTimer(TIME);
3888                         expire_run = true;
3889                         continue;
3890                 }
3891                 if ((TIME % 5) == 1)
3892                         expire_run = false;
3893
3894                 // fix by brain - this must be below any manipulation of the hashmap by modules
3895                 user_hash::iterator count2 = clientlist.begin();
3896
3897                 FD_ZERO(&serverfds);
3898
3899                 for (int x = 0; x != UDPportCount; x++)
3900                 {
3901                         if (me[x])
3902                                 FD_SET(me[x]->fd, &serverfds);
3903                 }
3904
3905                 // serverFds timevals went here
3906
3907                 tvs.tv_usec = 30000L;
3908                 tvs.tv_sec = 0;
3909                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3910                 if (servresult > 0)
3911                 {
3912                         for (int x = 0; x != UDPportCount; x++)
3913                         {
3914                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3915                                 {
3916                                         char remotehost[MAXBUF],resolved[MAXBUF];
3917                                         length = sizeof (client);
3918                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3919                                         if (incomingSockfd != -1)
3920                                         {
3921                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3922                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3923                                                 {
3924                                                         strlcpy(resolved,remotehost,MAXBUF);
3925                                                 }
3926                                                 // add to this connections ircd_connector vector
3927                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3928                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3929                                         }
3930                                 }
3931                         }
3932                 }
3933
3934                 for (int x = 0; x < UDPportCount; x++)
3935                 {
3936                         std::deque<std::string> msgs;
3937                         msgs.clear();
3938                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3939                         {
3940                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3941                                 {
3942                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3943                                         log(DEBUG,"Processing: %s",udp_msg);
3944                                         if (!udp_msg[0])
3945                                         {
3946                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
3947                                                 break;
3948                                         }
3949                                         // during a netburst, send all data to all other linked servers
3950                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3951                                         {
3952                                                 if (is_uline(tcp_host))
3953                                                 {
3954                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3955                                                         {
3956                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3957                                                         }
3958                                                 }
3959                                                 else
3960                                                         NetSendToAllExcept(tcp_host,udp_msg);
3961                                         }
3962                                         std::string msg = udp_msg;
3963                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3964                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3965                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3966                                 }
3967                                 goto label;
3968                         }
3969                 }
3970
3971
3972         while (count2 != clientlist.end())
3973         {
3974                 FD_ZERO(&sfd);
3975                 total_in_this_set = 0;
3976
3977                 user_hash::iterator xcount = count2;
3978                 user_hash::iterator endingiter = count2;
3979
3980                 if (count2 == clientlist.end()) break;
3981
3982                 if (count2->second)
3983                 if (count2->second->fd != 0)
3984                 {
3985                         // assemble up to 64 sockets into an fd_set
3986                         // to implement a pooling mechanism.
3987                         //
3988                         // This should be up to 64x faster than the
3989                         // old implementation.
3990                         while (total_in_this_set < 64)
3991                         {
3992                                 if (count2 != clientlist.end())
3993                                 {
3994                                         // we don't check the state of remote users.
3995                                         if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
3996                                         {
3997                                                 FD_SET (count2->second->fd, &sfd);
3998
3999                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4000                                                 // their connection class.
4001                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
4002                                                 {
4003                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
4004                                                         kill_link(count2->second,"Registration timeout");
4005                                                         goto label;
4006                                                 }
4007                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second)))
4008                                                 {
4009                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
4010                                                         count2->second->dns_done = true;
4011                                                         FullConnectUser(count2->second);
4012                                                         goto label;
4013                                                 }
4014                                                 if ((count2->second->dns_done) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second))) // both NICK and USER... and DNS
4015                                                 {
4016                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4017                                                         FullConnectUser(count2->second);
4018                                                         goto label;
4019                                                 }
4020                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
4021                                                 {
4022                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
4023                                                         {
4024                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
4025                                                                 kill_link(count2->second,"Ping timeout");
4026                                                                 goto label;
4027                                                         }
4028                                                         Write(count2->second->fd,"PING :%s",ServerName);
4029                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
4030                                                         count2->second->lastping = 0;
4031                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
4032                                                 }
4033                                         }
4034                                         count2++;
4035                                         total_in_this_set++;
4036                                 }
4037                                 else break;
4038                         }
4039
4040                         endingiter = count2;
4041                         count2 = xcount; // roll back to where we were
4042
4043                         v = 0;
4044
4045                         // tvals defined here
4046
4047                         tval.tv_usec = 1000L;
4048                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
4049
4050                         // now loop through all of the items in this pool if any are waiting
4051                         //if (selectResult2 > 0)
4052                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4053                         {
4054
4055 #ifdef _POSIX_PRIORITY_SCHEDULING
4056                                 sched_yield();
4057 #endif
4058
4059                                 result = EAGAIN;
4060                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
4061                                 {
4062                                         memset(data, 0, 10240);
4063                                         result = read(count2a->second->fd, data, 10240);
4064
4065                                         if (result)
4066                                         {
4067                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4068                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4069                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4070                                                 for (int checker = 0; checker < result; checker++)
4071                                                 {
4072                                                         if ((data[checker] == 0) || (data[checker] == 7))
4073                                                                 data[checker] = ' ';
4074                                                 }
4075                                                 userrec* current = count2a->second;
4076                                                 int currfd = current->fd;
4077                                                 char* l = strtok(data,"\n");
4078                                                 int floodlines = 0;
4079                                                 while (l)
4080                                                 {
4081                                                         floodlines++;
4082                                                         if ((floodlines > current->flood) && (current->flood != 0))
4083                                                         {
4084                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4085                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4086                                                                 kill_link(current,"Excess flood");
4087                                                                 goto label;
4088                                                         }
4089                                                         char sanitized[NetBufferSize];
4090                                                         memset(sanitized, 0, NetBufferSize);
4091                                                         int ptt = 0;
4092                                                         for (int pt = 0; pt < strlen(l); pt++)
4093                                                         {
4094                                                                 if (l[pt] != '\r')
4095                                                                 {
4096                                                                         sanitized[ptt++] = l[pt];
4097                                                                 }
4098                                                         }
4099                                                         sanitized[ptt] = '\0';
4100                                                         if (*sanitized)
4101                                                         {
4102
4103
4104                                                                 // we're gonna re-scan to check if the nick is gone, after every
4105                                                                 // command - if it has, we're gonna bail
4106                                                                 bool find_again = false;
4107                                                                 process_buffer(sanitized,current);
4108
4109                                                                 // look for the user's record in case it's changed
4110                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
4111                                                                 {
4112                                                                         if (c2->second->fd == currfd)
4113                                                                         {
4114                                                                                 // found again, update pointer
4115                                                                                 current == c2->second;
4116                                                                                 find_again = true;
4117                                                                                 break;
4118                                                                         }
4119                                                                 }
4120                                                                 if (!find_again)
4121                                                                         goto label;
4122
4123                                                         }
4124                                                         l = strtok(NULL,"\n");
4125                                                 }
4126                                                 goto label;
4127                                         }
4128
4129                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4130                                         {
4131                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4132                                                 kill_link(count2a->second,strerror(errno));
4133                                                 goto label;
4134                                         }
4135                                 }
4136                                 // result EAGAIN means nothing read
4137                                 if (result == EAGAIN)
4138                                 {
4139                                 }
4140                                 else
4141                                 if (result == 0)
4142                                 {
4143                                         if (count2->second)
4144                                         {
4145                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4146                                                 kill_link(count2a->second,"Client exited");
4147                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4148                                                 log(DEBUG,"Bailing from client exit");
4149                                                 goto label;
4150                                         }
4151                                 }
4152                                 else if (result > 0)
4153                                 {
4154                                 }
4155                         }
4156                 }
4157                 for (int q = 0; q < total_in_this_set; q++)
4158                 {
4159                         count2++;
4160                 }
4161         }
4162
4163 #ifdef _POSIX_PRIORITY_SCHEDULING
4164         sched_yield();
4165 #endif
4166
4167         // set up select call
4168         for (count = 0; count < boundPortCount; count++)
4169         {
4170                 FD_SET (openSockfd[count], &selectFds);
4171         }
4172
4173         tv.tv_usec = 30000L;
4174         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4175
4176         /* select is reporting a waiting socket. Poll them all to find out which */
4177         if (selectResult > 0)
4178         {
4179                 char target[MAXBUF], resolved[MAXBUF];
4180                 for (count = 0; count < boundPortCount; count++)
4181                 {
4182                         if (FD_ISSET (openSockfd[count], &selectFds))
4183                         {
4184                                 length = sizeof (client);
4185                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4186
4187                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4188                                 strlcpy (resolved, target, MAXBUF);
4189
4190                                 if (incomingSockfd < 0)
4191                                 {
4192                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4193                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4194                                 }
4195                                 else
4196                                 {
4197                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4198                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4199                                 }
4200                                 goto label;
4201                         }
4202                 }
4203         }
4204         label:
4205         if (0) {};
4206 #ifdef _POSIX_PRIORITY_SCHEDULING
4207         sched_yield();
4208 #endif
4209 }
4210 /* not reached */
4211 close (incomingSockfd);
4212 }
4213