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],thold[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                 ConfValue("connect","threshold",i,thold,&config_f);
 450                 if (Value[0])
 451                 {
 452                         strlcpy(c.host,Value,MAXBUF);
 453                         c.type = CC_ALLOW;
 454                         strlcpy(Value,"",MAXBUF);
 455                         ConfValue("connect","password",i,Value,&config_f);
 456                         strlcpy(c.pass,Value,MAXBUF);
 457                         c.registration_timeout = 90; // default is 2 minutes
 458                         c.pingtime = 120;
 459                         c.flood = atoi(flood);
 460                         c.threshold = 5;
 461                         if (atoi(thold)>0)
 462                         {
 463                                 c.threshold = atoi(thold);
 464                         }
 465                         if (atoi(timeout)>0)
 466                         {
 467                                 c.registration_timeout = atoi(timeout);
 468                         }
 469                         if (atoi(pfreq)>0)
 470                         {
 471                                 c.pingtime = atoi(pfreq);
 472                         }
 473                         Classes.push_back(c);
 474                         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);
 475                 }
 476                 else
 477                 {
 478                         ConfValue("connect","deny",i,Value,&config_f);
 479                         strlcpy(c.host,Value,MAXBUF);
 480                         c.type = CC_DENY;
 481                         Classes.push_back(c);
 482                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 483                 }
 484
 485         }
 486         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 487         read_xline_defaults();
 488         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 489         apply_lines();
 490         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 491         if (!bail)
 492         {
 493                 log(DEFAULT,"Adding and removing modules due to rehash...");
 494
 495                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 496
 497                 // store the old module names
 498                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 499                 {
 500                         old_module_names.push_back(*t);
 501                 }
 502
 503                 // get the new module names
 504                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 505                 {
 506                         ConfValue("module","name",count2,Value,&config_f);
 507                         new_module_names.push_back(Value);
 508                 }
 509
 510                 // now create a list of new modules that are due to be loaded
 511                 // and a seperate list of modules which are due to be unloaded
 512                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 513                 {
 514                         bool added = true;
 515                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 516                         {
 517                                 if (*old == *_new)
 518                                         added = false;
 519                         }
 520                         if (added)
 521                                 added_modules.push_back(*_new);
 522                 }
 523                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 524                 {
 525                         bool removed = true;
 526                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 527                         {
 528                                 if (*newm == *oldm)
 529                                         removed = false;
 530                         }
 531                         if (removed)
 532                                 removed_modules.push_back(*oldm);
 533                 }
 534                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 535                 // to be removed.
 536                 int rem = 0, add = 0;
 537                 if (!removed_modules.empty())
 538                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 539                 {
 540                         if (UnloadModule(removing->c_str()))
 541                         {
 542                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 543                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 544                                 rem++;
 545                         }
 546                         else
 547                         {
 548                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 549                         }
 550                 }
 551                 if (!added_modules.empty())
 552                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 553                 {
 554                         if (LoadModule(adding->c_str()))
 555                         {
 556                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 557                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 558                                 add++;
 559                         }
 560                         else
 561                         {
 562                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 563                         }
 564                 }
 565                 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());
 566         }
 567 }
 568
 569 /* write formatted text to a socket, in same format as printf */
 570
 571 void Write(int sock,char *text, ...)
 572 {
 573         if (sock == FD_MAGIC_NUMBER)
 574                 return;
 575         if (!text)
 576         {
 577                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 578                 return;
 579         }
 580         char textbuffer[MAXBUF];
 581         va_list argsPtr;
 582         char tb[MAXBUF];
 583
 584         va_start (argsPtr, text);
 585         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 586         va_end(argsPtr);
 587         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 588         chop(tb);
 589         if (sock != -1)
 590         {
 591                 write(sock,tb,bytes > 514 ? 514 : bytes);
 592         }
 593 }
 594
 595 /* write a server formatted numeric response to a single socket */
 596
 597 void WriteServ(int sock, char* text, ...)
 598 {
 599         if (sock == FD_MAGIC_NUMBER)
 600                 return;
 601         if (!text)
 602         {
 603                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 604                 return;
 605         }
 606         char textbuffer[MAXBUF],tb[MAXBUF];
 607         va_list argsPtr;
 608         va_start (argsPtr, text);
 609
 610         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 611         va_end(argsPtr);
 612         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 613         chop(tb);
 614         if (sock != -1)
 615         {
 616                 write(sock,tb,bytes > 514 ? 514 : bytes);
 617         }
 618 }
 619
 620 /* write text from an originating user to originating user */
 621
 622 void WriteFrom(int sock, userrec *user,char* text, ...)
 623 {
 624         if (sock == FD_MAGIC_NUMBER)
 625                 return;
 626         if ((!text) || (!user))
 627         {
 628                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 629                 return;
 630         }
 631         char textbuffer[MAXBUF],tb[MAXBUF];
 632         va_list argsPtr;
 633         va_start (argsPtr, text);
 634
 635         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 636         va_end(argsPtr);
 637         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 638         chop(tb);
 639         if (sock != -1)
 640         {
 641                 write(sock,tb,bytes > 514 ? 514 : bytes);
 642         }
 643 }
 644
 645 /* write text to an destination user from a source user (e.g. user privmsg) */
 646
 647 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 648 {
 649         if ((!dest) || (!data))
 650         {
 651                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 652                 return;
 653         }
 654         if (dest->fd == FD_MAGIC_NUMBER)
 655                 return;
 656         char textbuffer[MAXBUF],tb[MAXBUF];
 657         va_list argsPtr;
 658         va_start (argsPtr, data);
 659         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 660         va_end(argsPtr);
 661         chop(tb);
 662
 663         // if no source given send it from the server.
 664         if (!source)
 665         {
 666                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 667         }
 668         else
 669         {
 670                 WriteFrom(dest->fd,source,"%s",textbuffer);
 671         }
 672 }
 673
 674 /* write formatted text from a source user to all users on a channel
 675  * including the sender (NOT for privmsg, notice etc!) */
 676
 677 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 678 {
 679         if ((!Ptr) || (!user) || (!text))
 680         {
 681                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 682                 return;
 683         }
 684         char textbuffer[MAXBUF];
 685         va_list argsPtr;
 686         va_start (argsPtr, text);
 687         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 688         va_end(argsPtr);
 689
 690         std::vector<char*> *ulist = Ptr->GetUsers();
 691         for (int j = 0; j < ulist->size(); j++)
 692         {
 693                 char* o = (*ulist)[j];
 694                 userrec* otheruser = (userrec*)o;
 695                 if (otheruser->fd != FD_MAGIC_NUMBER)
 696                         WriteTo(user,otheruser,"%s",textbuffer);
 697         }
 698 }
 699
 700 /* write formatted text from a source user to all users on a channel
 701  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 702  * users on remote servers */
 703
 704 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 705 {
 706         if ((!Ptr) || (!text))
 707         {
 708                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 709                 return;
 710         }
 711         char textbuffer[MAXBUF];
 712         va_list argsPtr;
 713         va_start (argsPtr, text);
 714         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 715         va_end(argsPtr);
 716
 717         std::vector<char*> *ulist = Ptr->GetUsers();
 718         for (int j = 0; j < ulist->size(); j++)
 719         {
 720                 char* o = (*ulist)[j];
 721                 userrec* otheruser = (userrec*)o;
 722                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 723                 {
 724                         if (!user)
 725                         {
 726                                 WriteServ(otheruser->fd,"%s",textbuffer);
 727                         }
 728                         else
 729                         {
 730                                 WriteTo(user,otheruser,"%s",textbuffer);
 731                         }
 732                 }
 733         }
 734 }
 735
 736
 737 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 738 {
 739         if ((!Ptr) || (!text))
 740         {
 741                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 742                 return;
 743         }
 744         char textbuffer[MAXBUF];
 745         va_list argsPtr;
 746         va_start (argsPtr, text);
 747         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 748         va_end(argsPtr);
 749
 750
 751         std::vector<char*> *ulist = Ptr->GetUsers();
 752         for (int j = 0; j < ulist->size(); j++)
 753         {
 754                 char* o = (*ulist)[j];
 755                 userrec* otheruser = (userrec*)o;
 756                 if (otheruser->fd != FD_MAGIC_NUMBER)
 757                         WriteServ(otheruser->fd,"%s",textbuffer);
 758         }
 759 }
 760
 761
 762 /* write formatted text from a source user to all users on a channel except
 763  * for the sender (for privmsg etc) */
 764
 765 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 766 {
 767         if ((!Ptr) || (!user) || (!text))
 768         {
 769                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 770                 return;
 771         }
 772         char textbuffer[MAXBUF];
 773         va_list argsPtr;
 774         va_start (argsPtr, text);
 775         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 776         va_end(argsPtr);
 777
 778         std::vector<char*> *ulist = Ptr->GetUsers();
 779         for (int j = 0; j < ulist->size(); j++)
 780         {
 781                 char* o = (*ulist)[j];
 782                 userrec* otheruser = (userrec*)o;
 783                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 784                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 785         }
 786 }
 787
 788
 789 std::string GetServerDescription(char* servername)
 790 {
 791         for (int j = 0; j < 32; j++)
 792         {
 793                 if (me[j] != NULL)
 794                 {
 795                         for (int k = 0; k < me[j]->connectors.size(); k++)
 796                         {
 797                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 798                                 {
 799                                         return me[j]->connectors[k].GetDescription();
 800                                 }
 801                         }
 802                 }
 803                 return ServerDesc; // not a remote server that can be found, it must be me.
 804         }
 805 }
 806
 807
 808 /* write a formatted string to all users who share at least one common
 809  * channel, including the source user e.g. for use in NICK */
 810
 811 void WriteCommon(userrec *u, char* text, ...)
 812 {
 813         if (!u)
 814         {
 815                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 816                 return;
 817         }
 818
 819         if (u->registered != 7) {
 820                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 821                 return;
 822         }
 823
 824         char textbuffer[MAXBUF];
 825         va_list argsPtr;
 826         va_start (argsPtr, text);
 827         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 828         va_end(argsPtr);
 829
 830         // FIX: Stops a message going to the same person more than once
 831         std::vector<int> already_sent;
 832
 833         for (int i = 0; i < MAXCHANS; i++)
 834         {
 835                 if (u->chans[i].channel)
 836                 {
 837                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 838                         for (int j = 0; j < ulist->size(); j++)
 839                         {
 840                                 char* o = (*ulist)[j];
 841                                 userrec* otheruser = (userrec*)o;
 842                                 bool do_send = true;
 843                                 for (int t = 0; t < already_sent.size(); t++)
 844                                 {
 845                                         if (already_sent[t] == otheruser->fd)
 846                                         {
 847                                                 do_send = false;
 848                                                 break;
 849                                         }
 850                                 }
 851                                 if (do_send)
 852                                 {
 853                                         already_sent.push_back(otheruser->fd);
 854                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 855                                 }
 856                         }
 857                 }
 858         }
 859         // if the user was not in any channels, no users will receive the text. Make sure the user
 860         // receives their OWN message for WriteCommon
 861         if (!already_sent.size())
 862         {
 863                 WriteFrom(u->fd,u,"%s",textbuffer);
 864         }
 865 }
 866
 867 /* write a formatted string to all users who share at least one common
 868  * channel, NOT including the source user e.g. for use in QUIT */
 869
 870 void WriteCommonExcept(userrec *u, char* text, ...)
 871 {
 872         if (!u)
 873         {
 874                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 875                 return;
 876         }
 877
 878         if (u->registered != 7) {
 879                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 880                 return;
 881         }
 882
 883         char textbuffer[MAXBUF];
 884         va_list argsPtr;
 885         va_start (argsPtr, text);
 886         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 887         va_end(argsPtr);
 888
 889         std::vector<int> already_sent;
 890
 891         for (int i = 0; i < MAXCHANS; i++)
 892         {
 893                 if (u->chans[i].channel)
 894                 {
 895                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 896                         for (int j = 0; j < ulist->size(); j++)
 897                         {
 898                                 char* o = (*ulist)[j];
 899                                 userrec* otheruser = (userrec*)o;
 900                                 if (u != otheruser)
 901                                 {
 902                                         bool do_send = true;
 903                                         for (int t = 0; t < already_sent.size(); t++)
 904                                         {
 905                                                 if (already_sent[t] == otheruser->fd)
 906                                                 {
 907                                                         do_send = false;
 908                                                         break;
 909                                                 }
 910                                         }
 911                                         if (do_send)
 912                                         {
 913                                                 already_sent.push_back(otheruser->fd);
 914                                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 915                                         }
 916                                 }
 917                         }
 918                 }
 919         }
 920 }
 921
 922 void WriteOpers(char* text, ...)
 923 {
 924         if (!text)
 925         {
 926                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 927                 return;
 928         }
 929
 930         char textbuffer[MAXBUF];
 931         va_list argsPtr;
 932         va_start (argsPtr, text);
 933         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 934         va_end(argsPtr);
 935
 936         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 937         {
 938                 userrec* a = *i;
 939                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 940                 {
 941                         if (strchr(a->modes,'s'))
 942                         {
 943                                 // send server notices to all with +s
 944                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 945                         }
 946                 }
 947         }
 948 }
 949
 950 // returns TRUE of any users on channel C occupy server 'servername'.
 951
 952 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 953 {
 954         log(DEBUG,"ChanAnyOnThisServer");
 955
 956         std::vector<char*> *ulist = c->GetUsers();
 957         for (int j = 0; j < ulist->size(); j++)
 958         {
 959                 char* o = (*ulist)[j];
 960                 userrec* user = (userrec*)o;
 961                 if (!strcasecmp(user->server,servername))
 962                         return true;
 963         }
 964         return false;
 965 }
 966
 967 // returns true if user 'u' shares any common channels with any users on server 'servername'
 968
 969 bool CommonOnThisServer(userrec* u,const char* servername)
 970 {
 971         log(DEBUG,"ChanAnyOnThisServer");
 972
 973         for (int i = 0; i < MAXCHANS; i++)
 974         {
 975                 if (u->chans[i].channel)
 976                 {
 977                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 978                         for (int j = 0; j < ulist->size(); j++)
 979                         {
 980                                 char* o = (*ulist)[j];
 981                                 userrec* user = (userrec*)o;
 982                                 if (!strcasecmp(user->server,servername))
 983                                         return true;
 984                         }
 985                 }
 986         }
 987         return false;
 988 }
 989
 990
 991 void NetSendToCommon(userrec* u, char* s)
 992 {
 993         char buffer[MAXBUF];
 994         snprintf(buffer,MAXBUF,"%s",s);
 995
 996         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 997
 998         std::string msg = buffer;
 999         FOREACH_MOD OnPacketTransmit(msg,s);
1000         strlcpy(buffer,msg.c_str(),MAXBUF);
1001
1002         for (int j = 0; j < 32; j++)
1003         {
1004                 if (me[j] != NULL)
1005                 {
1006                         for (int k = 0; k < me[j]->connectors.size(); k++)
1007                         {
1008                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
1009                                 {
1010                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1011                                 }
1012                         }
1013                 }
1014         }
1015 }
1016
1017
1018 void NetSendToAll(char* s)
1019 {
1020         char buffer[MAXBUF];
1021         snprintf(buffer,MAXBUF,"%s",s);
1022
1023         log(DEBUG,"NetSendToAll: '%s'",s);
1024
1025         std::string msg = buffer;
1026         FOREACH_MOD OnPacketTransmit(msg,s);
1027         strlcpy(buffer,msg.c_str(),MAXBUF);
1028
1029         for (int j = 0; j < 32; j++)
1030         {
1031                 if (me[j] != NULL)
1032                 {
1033                         for (int k = 0; k < me[j]->connectors.size(); k++)
1034                         {
1035                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1036                         }
1037                 }
1038         }
1039 }
1040
1041 void NetSendToAllAlive(char* s)
1042 {
1043         char buffer[MAXBUF];
1044         snprintf(buffer,MAXBUF,"%s",s);
1045
1046         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1047
1048         std::string msg = buffer;
1049         FOREACH_MOD OnPacketTransmit(msg,s);
1050         strlcpy(buffer,msg.c_str(),MAXBUF);
1051
1052         for (int j = 0; j < 32; j++)
1053         {
1054                 if (me[j] != NULL)
1055                 {
1056                         for (int k = 0; k < me[j]->connectors.size(); k++)
1057                         {
1058                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1059                                 {
1060                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1061                                 }
1062                                 else
1063                                 {
1064                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1065                                 }
1066                         }
1067                 }
1068         }
1069 }
1070
1071
1072 void NetSendToOne(char* target,char* s)
1073 {
1074         char buffer[MAXBUF];
1075         snprintf(buffer,MAXBUF,"%s",s);
1076
1077         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1078
1079         std::string msg = buffer;
1080         FOREACH_MOD OnPacketTransmit(msg,s);
1081         strlcpy(buffer,msg.c_str(),MAXBUF);
1082
1083         for (int j = 0; j < 32; j++)
1084         {
1085                 if (me[j] != NULL)
1086                 {
1087                         for (int k = 0; k < me[j]->connectors.size(); k++)
1088                         {
1089                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1090                                 {
1091                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1092                                 }
1093                         }
1094                 }
1095         }
1096 }
1097
1098 void NetSendToAllExcept(const char* target,char* s)
1099 {
1100         char buffer[MAXBUF];
1101         snprintf(buffer,MAXBUF,"%s",s);
1102
1103         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1104
1105         std::string msg = buffer;
1106         FOREACH_MOD OnPacketTransmit(msg,s);
1107         strlcpy(buffer,msg.c_str(),MAXBUF);
1108
1109         for (int j = 0; j < 32; j++)
1110         {
1111                 if (me[j] != NULL)
1112                 {
1113                         for (int k = 0; k < me[j]->connectors.size(); k++)
1114                         {
1115                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1116                                 {
1117                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1118                                 }
1119                         }
1120                 }
1121         }
1122 }
1123
1124
1125 void WriteMode(const char* modes, int flags, const char* text, ...)
1126 {
1127         if ((!text) || (!modes) || (!flags))
1128         {
1129                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1130                 return;
1131         }
1132
1133         char textbuffer[MAXBUF];
1134         va_list argsPtr;
1135         va_start (argsPtr, text);
1136         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1137         va_end(argsPtr);
1138         int modelen = strlen(modes);
1139
1140         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1141         {
1142                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1143                 {
1144                         bool send_to_user = false;
1145
1146                         if (flags == WM_AND)
1147                         {
1148                                 send_to_user = true;
1149                                 for (int n = 0; n < modelen; n++)
1150                                 {
1151                                         if (!hasumode(i->second,modes[n]))
1152                                         {
1153                                                 send_to_user = false;
1154                                                 break;
1155                                         }
1156                                 }
1157                         }
1158                         else if (flags == WM_OR)
1159                         {
1160                                 send_to_user = false;
1161                                 for (int n = 0; n < modelen; n++)
1162                                 {
1163                                         if (hasumode(i->second,modes[n]))
1164                                         {
1165                                                 send_to_user = true;
1166                                                 break;
1167                                         }
1168                                 }
1169                         }
1170
1171                         if (send_to_user)
1172                         {
1173                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1174                         }
1175                 }
1176         }
1177 }
1178
1179
1180 void NoticeAll(userrec *source, bool local_only, char* text, ...)
1181 {
1182         if ((!text) || (!source))
1183         {
1184                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1185                 return;
1186         }
1187
1188         char textbuffer[MAXBUF];
1189         va_list argsPtr;
1190         va_start (argsPtr, text);
1191         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1192         va_end(argsPtr);
1193
1194         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1195         {
1196                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1197                 {
1198                         WriteFrom(i->second->fd,source,"NOTICE $* :%s",textbuffer);
1199                 }
1200         }
1201
1202         if (!local_only)
1203         {
1204                 char buffer[MAXBUF];
1205                 snprintf(buffer,MAXBUF,"V %s * :%s",source->nick,textbuffer);
1206                 NetSendToAll(buffer);
1207         }
1208
1209 }
1210
1211 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1212 {
1213         if ((!text) || (!source))
1214         {
1215                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1216                 return;
1217         }
1218
1219         char textbuffer[MAXBUF];
1220         va_list argsPtr;
1221         va_start (argsPtr, text);
1222         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1223         va_end(argsPtr);
1224
1225         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1226         {
1227                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1228                 {
1229                         if (strchr(i->second->modes,'w'))
1230                         {
1231                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1232                         }
1233                 }
1234         }
1235
1236         if (!local_only)
1237         {
1238                 char buffer[MAXBUF];
1239                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1240                 NetSendToAll(buffer);
1241         }
1242 }
1243
1244 /* convert a string to lowercase. Note following special circumstances
1245  * taken from RFC 1459. Many "official" server branches still hold to this
1246  * rule so i will too;
1247  *
1248  *  Because of IRC's scandanavian origin, the characters {}| are
1249  *  considered to be the lower case equivalents of the characters []\,
1250  *  respectively. This is a critical issue when determining the
1251  *  equivalence of two nicknames.
1252  */
1253
1254 void strlower(char *n)
1255 {
1256         if (!n)
1257         {
1258                 return;
1259         }
1260         for (int i = 0; n[i] != 0; i++)
1261         {
1262                 n[i] = tolower(n[i]);
1263                 if (n[i] == '[')
1264                         n[i] = '{';
1265                 if (n[i] == ']')
1266                         n[i] = '}';
1267                 if (n[i] == '\\')
1268                         n[i] = '|';
1269         }
1270 }
1271
1272
1273
1274 /* Find a user record by nickname and return a pointer to it */
1275
1276 userrec* Find(std::string nick)
1277 {
1278         user_hash::iterator iter = clientlist.find(nick);
1279
1280         if (iter == clientlist.end())
1281                 /* Couldn't find it */
1282                 return NULL;
1283
1284         return iter->second;
1285 }
1286
1287 /* find a channel record by channel name and return a pointer to it */
1288
1289 chanrec* FindChan(const char* chan)
1290 {
1291         if (!chan)
1292         {
1293                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1294                 return NULL;
1295         }
1296
1297         chan_hash::iterator iter = chanlist.find(chan);
1298
1299         if (iter == chanlist.end())
1300                 /* Couldn't find it */
1301                 return NULL;
1302
1303         return iter->second;
1304 }
1305
1306
1307 long GetMaxBans(char* name)
1308 {
1309         char CM[MAXBUF];
1310         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1311         {
1312                 ConfValue("banlist","chan",count,CM,&config_f);
1313                 if (match(name,CM))
1314                 {
1315                         ConfValue("banlist","limit",count,CM,&config_f);
1316                         return atoi(CM);
1317                 }
1318         }
1319         return 64;
1320 }
1321
1322
1323 void purge_empty_chans(userrec* u)
1324 {
1325
1326         int go_again = 1, purge = 0;
1327
1328         // firstly decrement the count on each channel
1329         for (int f = 0; f < MAXCHANS; f++)
1330         {
1331                 if (u->chans[f].channel)
1332                 {
1333                         u->chans[f].channel->DecUserCounter();
1334                         u->chans[f].channel->DelUser((char*)u);
1335                 }
1336         }
1337
1338         for (int i = 0; i < MAXCHANS; i++)
1339         {
1340                 if (u->chans[i].channel)
1341                 {
1342                         if (!usercount(u->chans[i].channel))
1343                         {
1344                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1345                                 /* kill the record */
1346                                 if (i2 != chanlist.end())
1347                                 {
1348                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1349                                         if (i2->second)
1350                                                 delete i2->second;
1351                                         chanlist.erase(i2);
1352                                         go_again = 1;
1353                                         purge++;
1354                                         u->chans[i].channel = NULL;
1355                                 }
1356                         }
1357                         else
1358                         {
1359                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1360                         }
1361                 }
1362         }
1363         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1364
1365         DeleteOper(u);
1366 }
1367
1368
1369 char scratch[MAXBUF];
1370 char sparam[MAXBUF];
1371
1372 char* chanmodes(chanrec *chan)
1373 {
1374         if (!chan)
1375         {
1376                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1377                 strcpy(scratch,"");
1378                 return scratch;
1379         }
1380
1381         strcpy(scratch,"");
1382         strcpy(sparam,"");
1383         if (chan->noexternal)
1384         {
1385                 strlcat(scratch,"n",MAXMODES);
1386         }
1387         if (chan->topiclock)
1388         {
1389                 strlcat(scratch,"t",MAXMODES);
1390         }
1391         if (chan->key[0])
1392         {
1393                 strlcat(scratch,"k",MAXMODES);
1394         }
1395         if (chan->limit)
1396         {
1397                 strlcat(scratch,"l",MAXMODES);
1398         }
1399         if (chan->inviteonly)
1400         {
1401                 strlcat(scratch,"i",MAXMODES);
1402         }
1403         if (chan->moderated)
1404         {
1405                 strlcat(scratch,"m",MAXMODES);
1406         }
1407         if (chan->secret)
1408         {
1409                 strlcat(scratch,"s",MAXMODES);
1410         }
1411         if (chan->c_private)
1412         {
1413                 strlcat(scratch,"p",MAXMODES);
1414         }
1415         if (chan->key[0])
1416         {
1417                 strlcat(sparam," ",MAXBUF);
1418                 strlcat(sparam,chan->key,MAXBUF);
1419         }
1420         if (chan->limit)
1421         {
1422                 char foo[24];
1423                 sprintf(foo," %lu",(unsigned long)chan->limit);
1424                 strlcat(sparam,foo,MAXBUF);
1425         }
1426         if (*chan->custom_modes)
1427         {
1428                 strlcat(scratch,chan->custom_modes,MAXMODES);
1429                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1430                 {
1431                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1432                         if (extparam != "")
1433                         {
1434                                 strlcat(sparam," ",MAXBUF);
1435                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1436                         }
1437                 }
1438         }
1439         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1440         strlcat(scratch,sparam,MAXMODES);
1441         return scratch;
1442 }
1443
1444
1445 /* compile a userlist of a channel into a string, each nick seperated by
1446  * spaces and op, voice etc status shown as @ and + */
1447
1448 void userlist(userrec *user,chanrec *c)
1449 {
1450         if ((!c) || (!user))
1451         {
1452                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1453                 return;
1454         }
1455
1456         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1457         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1458         {
1459                 if (has_channel(i->second,c))
1460                 {
1461                         if (isnick(i->second->nick))
1462                         {
1463                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1464                                 {
1465                                         /* user is +i, and source not on the channel, does not show
1466                                          * nick in NAMES list */
1467                                         continue;
1468                                 }
1469                                 strlcat(list,cmode(i->second,c),MAXBUF);
1470                                 strlcat(list,i->second->nick,MAXBUF);
1471                                 strlcat(list," ",MAXBUF);
1472                                 if (strlen(list)>(480-NICKMAX))
1473                                 {
1474                                         /* list overflowed into
1475                                          * multiple numerics */
1476                                         WriteServ(user->fd,"%s",list);
1477                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1478                                 }
1479                         }
1480                 }
1481         }
1482         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1483         {
1484                 WriteServ(user->fd,"%s",list);
1485         }
1486 }
1487
1488 /* return a count of the users on a specific channel accounting for
1489  * invisible users who won't increase the count. e.g. for /LIST */
1490
1491 int usercount_i(chanrec *c)
1492 {
1493         int count = 0;
1494
1495         if (!c)
1496         {
1497                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1498                 return 0;
1499         }
1500
1501         strcpy(list,"");
1502         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1503         {
1504                 if (i->second)
1505                 {
1506                         if (has_channel(i->second,c))
1507                         {
1508                                 if (isnick(i->second->nick))
1509                                 {
1510                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1511                                         {
1512                                                 /* user is +i, and source not on the channel, does not show
1513                                                  * nick in NAMES list */
1514                                                 continue;
1515                                         }
1516                                         count++;
1517                                 }
1518                         }
1519                 }
1520         }
1521         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1522         return count;
1523 }
1524
1525
1526 int usercount(chanrec *c)
1527 {
1528         if (!c)
1529         {
1530                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1531                 return 0;
1532         }
1533         int count = c->GetUserCounter();
1534         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1535         return count;
1536 }
1537
1538
1539 /* add a channel to a user, creating the record for it if needed and linking
1540  * it to the user record */
1541
1542 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1543 {
1544         if ((!user) || (!cn))
1545         {
1546                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1547                 return 0;
1548         }
1549
1550         chanrec* Ptr;
1551         int created = 0;
1552         char cname[MAXBUF];
1553
1554         strncpy(cname,cn,MAXBUF);
1555
1556         // we MUST declare this wherever we use FOREACH_RESULT
1557         int MOD_RESULT = 0;
1558
1559         if (strlen(cname) > CHANMAX-1)
1560         {
1561                 cname[CHANMAX-1] = '\0';
1562         }
1563
1564         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1565
1566         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1567         {
1568                 return NULL; // already on the channel!
1569         }
1570
1571
1572         if (!FindChan(cname))
1573         {
1574                 MOD_RESULT = 0;
1575                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1576                 if (MOD_RESULT == 1) {
1577                         return NULL;
1578                 }
1579
1580                 /* create a new one */
1581                 log(DEBUG,"add_channel: creating: %s",cname);
1582                 {
1583                         chanlist[cname] = new chanrec();
1584
1585                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1586                         chanlist[cname]->topiclock = 1;
1587                         chanlist[cname]->noexternal = 1;
1588                         chanlist[cname]->created = TIME;
1589                         strcpy(chanlist[cname]->topic, "");
1590                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1591                         chanlist[cname]->topicset = 0;
1592                         Ptr = chanlist[cname];
1593                         log(DEBUG,"add_channel: created: %s",cname);
1594                         /* set created to 2 to indicate user
1595                          * is the first in the channel
1596                          * and should be given ops */
1597                         created = 2;
1598                 }
1599         }
1600         else
1601         {
1602                 /* channel exists, just fish out a pointer to its struct */
1603                 Ptr = FindChan(cname);
1604                 if (Ptr)
1605                 {
1606                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1607
1608                         // the override flag allows us to bypass channel modes
1609                         // and bans (used by servers)
1610                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1611                         {
1612                                 log(DEBUG,"Not overriding...");
1613                                 MOD_RESULT = 0;
1614                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1615                                 if (MOD_RESULT == 1) {
1616                                         return NULL;
1617                                 }
1618                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1619
1620                                 if (!MOD_RESULT)
1621                                 {
1622                                         log(DEBUG,"add_channel: checking key, invite, etc");
1623                                         MOD_RESULT = 0;
1624                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1625                                         if (MOD_RESULT == 0)
1626                                         {
1627                                                 if (Ptr->key[0])
1628                                                 {
1629                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1630                                                         if (!key)
1631                                                         {
1632                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1633                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1634                                                                 return NULL;
1635                                                         }
1636                                                         else
1637                                                         {
1638                                                                 if (strcasecmp(key,Ptr->key))
1639                                                                 {
1640                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1641                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1642                                                                         return NULL;
1643                                                                 }
1644                                                         }
1645                                                 }
1646                                                 log(DEBUG,"add_channel: no key");
1647                                         }
1648                                         MOD_RESULT = 0;
1649                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1650                                         if (MOD_RESULT == 0)
1651                                         {
1652                                                 if (Ptr->inviteonly)
1653                                                 {
1654                                                         log(DEBUG,"add_channel: channel is +i");
1655                                                         if (user->IsInvited(Ptr->name))
1656                                                         {
1657                                                                 /* user was invited to channel */
1658                                                                 /* there may be an optional channel NOTICE here */
1659                                                         }
1660                                                         else
1661                                                         {
1662                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1663                                                                 return NULL;
1664                                                         }
1665                                                 }
1666                                                 log(DEBUG,"add_channel: channel is not +i");
1667                                         }
1668                                         MOD_RESULT = 0;
1669                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1670                                         if (MOD_RESULT == 0)
1671                                         {
1672                                                 if (Ptr->limit)
1673                                                 {
1674                                                         if (usercount(Ptr) >= Ptr->limit)
1675                                                         {
1676                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1677                                                                 return NULL;
1678                                                         }
1679                                                 }
1680                                         }
1681                                         log(DEBUG,"add_channel: about to walk banlist");
1682                                         MOD_RESULT = 0;
1683                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1684                                         if (MOD_RESULT == 0)
1685                                         {
1686                                                 /* check user against the channel banlist */
1687                                                 if (Ptr)
1688                                                 {
1689                                                         if (Ptr->bans.size())
1690                                                         {
1691                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1692                                                                 {
1693                                                                         if (match(user->GetFullHost(),i->data))
1694                                                                         {
1695                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1696                                                                                 return NULL;
1697                                                                         }
1698                                                                 }
1699                                                         }
1700                                                 }
1701                                                 log(DEBUG,"add_channel: bans checked");
1702                                         }
1703
1704                                 }
1705
1706
1707                                 if ((Ptr) && (user))
1708                                 {
1709                                         user->RemoveInvite(Ptr->name);
1710                                 }
1711
1712                                 log(DEBUG,"add_channel: invites removed");
1713
1714                         }
1715                         else
1716                         {
1717                                 log(DEBUG,"Overridden checks");
1718                         }
1719
1720
1721                 }
1722                 created = 1;
1723         }
1724
1725         log(DEBUG,"Passed channel checks");
1726
1727         for (int index =0; index != MAXCHANS; index++)
1728         {
1729                 log(DEBUG,"Check location %d",index);
1730                 if (user->chans[index].channel == NULL)
1731                 {
1732                         log(DEBUG,"Adding into their channel list at location %d",index);
1733
1734                         if (created == 2)
1735                         {
1736                                 /* first user in is given ops */
1737                                 user->chans[index].uc_modes = UCMODE_OP;
1738                         }
1739                         else
1740                         {
1741                                 user->chans[index].uc_modes = 0;
1742                         }
1743                         user->chans[index].channel = Ptr;
1744                         Ptr->IncUserCounter();
1745                         Ptr->AddUser((char*)user);
1746                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1747
1748                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1749                         {
1750                                 // use the stamdard J token with no privilages.
1751                                 char buffer[MAXBUF];
1752                                 if (created == 2)
1753                                 {
1754                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1755                                 }
1756                                 else
1757                                 {
1758                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1759                                 }
1760                                 NetSendToAll(buffer);
1761                         }
1762
1763                         log(DEBUG,"Sent JOIN to client");
1764
1765                         if (Ptr->topicset)
1766                         {
1767                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1768                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1769                         }
1770                         userlist(user,Ptr);
1771                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1772                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1773                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1774                         FOREACH_MOD OnUserJoin(user,Ptr);
1775                         return Ptr;
1776                 }
1777         }
1778         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1779         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1780         return NULL;
1781 }
1782
1783 /* remove a channel from a users record, and remove the record from memory
1784  * if the channel has become empty */
1785
1786 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1787 {
1788         if ((!user) || (!cname))
1789         {
1790                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1791                 return NULL;
1792         }
1793
1794         chanrec* Ptr;
1795
1796         if ((!cname) || (!user))
1797         {
1798                 return NULL;
1799         }
1800
1801         Ptr = FindChan(cname);
1802
1803         if (!Ptr)
1804         {
1805                 return NULL;
1806         }
1807
1808         FOREACH_MOD OnUserPart(user,Ptr);
1809         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1810
1811         for (int i =0; i != MAXCHANS; i++)
1812         {
1813                 /* zap it from the channel list of the user */
1814                 if (user->chans[i].channel == Ptr)
1815                 {
1816                         if (reason)
1817                         {
1818                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1819
1820                                 if (!local)
1821                                 {
1822                                         char buffer[MAXBUF];
1823                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1824                                         NetSendToAll(buffer);
1825                                 }
1826
1827
1828                         }
1829                         else
1830                         {
1831                                 if (!local)
1832                                 {
1833                                         char buffer[MAXBUF];
1834                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1835                                         NetSendToAll(buffer);
1836                                 }
1837
1838                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1839                         }
1840                         user->chans[i].uc_modes = 0;
1841                         user->chans[i].channel = NULL;
1842                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1843                         break;
1844                 }
1845         }
1846
1847         Ptr->DecUserCounter();
1848         Ptr->DelUser((char*)user);
1849
1850         /* if there are no users left on the channel */
1851         if (!usercount(Ptr))
1852         {
1853                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1854
1855                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1856
1857                 /* kill the record */
1858                 if (iter != chanlist.end())
1859                 {
1860                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1861                         if (iter->second) delete iter->second;
1862                         chanlist.erase(iter);
1863                 }
1864         }
1865 }
1866
1867
1868 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1869 {
1870         if ((!src) || (!user) || (!Ptr) || (!reason))
1871         {
1872                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1873                 return;
1874         }
1875
1876         if ((!Ptr) || (!user) || (!src))
1877         {
1878                 return;
1879         }
1880
1881         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1882
1883         if (!has_channel(user,Ptr))
1884         {
1885                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1886                 return;
1887         }
1888
1889         int MOD_RESULT = 0;
1890         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1891         if (MOD_RESULT == ACR_DENY)
1892                 return;
1893
1894         if (MOD_RESULT == ACR_DEFAULT)
1895         {
1896                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1897                 {
1898                         if (cstatus(src,Ptr) == STATUS_HOP)
1899                         {
1900                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1901                         }
1902                         else
1903                         {
1904                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1905                         }
1906
1907                         return;
1908                 }
1909         }
1910
1911         MOD_RESULT = 0;
1912         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1913         if (MOD_RESULT)
1914                 return;
1915
1916         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1917
1918         for (int i =0; i != MAXCHANS; i++)
1919         {
1920                 /* zap it from the channel list of the user */
1921                 if (user->chans[i].channel)
1922                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1923                 {
1924                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1925                         user->chans[i].uc_modes = 0;
1926                         user->chans[i].channel = NULL;
1927                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1928                         break;
1929                 }
1930         }
1931
1932         Ptr->DecUserCounter();
1933         Ptr->DelUser((char*)user);
1934
1935         /* if there are no users left on the channel */
1936         if (!usercount(Ptr))
1937         {
1938                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1939
1940                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1941
1942                 /* kill the record */
1943                 if (iter != chanlist.end())
1944                 {
1945                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1946                         if (iter->second) delete iter->second;
1947                         chanlist.erase(iter);
1948                 }
1949         }
1950 }
1951
1952
1953
1954
1955 /* This function pokes and hacks at a parameter list like the following:
1956  *
1957  * PART #winbot,#darkgalaxy :m00!
1958  *
1959  * to turn it into a series of individual calls like this:
1960  *
1961  * PART #winbot :m00!
1962  * PART #darkgalaxy :m00!
1963  *
1964  * The seperate calls are sent to a callback function provided by the caller
1965  * (the caller will usually call itself recursively). The callback function
1966  * must be a command handler. Calling this function on a line with no list causes
1967  * no action to be taken. You must provide a starting and ending parameter number
1968  * where the range of the list can be found, useful if you have a terminating
1969  * parameter as above which is actually not part of the list, or parameters
1970  * before the actual list as well. This code is used by many functions which
1971  * can function as "one to list" (see the RFC) */
1972
1973 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1974 {
1975         char plist[MAXBUF];
1976         char *param;
1977         char *pars[32];
1978         char blog[32][MAXBUF];
1979         char blog2[32][MAXBUF];
1980         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1981         char keystr[MAXBUF];
1982         char moo[MAXBUF];
1983
1984         for (int i = 0; i <32; i++)
1985                 strcpy(blog[i],"");
1986
1987         for (int i = 0; i <32; i++)
1988                 strcpy(blog2[i],"");
1989
1990         strcpy(moo,"");
1991         for (int i = 0; i <10; i++)
1992         {
1993                 if (!parameters[i])
1994                 {
1995                         parameters[i] = moo;
1996                 }
1997         }
1998         if (joins)
1999         {
2000                 if (pcnt > 1) /* we have a key to copy */
2001                 {
2002                         strlcpy(keystr,parameters[1],MAXBUF);
2003                 }
2004         }
2005
2006         if (!parameters[start])
2007         {
2008                 return 0;
2009         }
2010         if (!strchr(parameters[start],','))
2011         {
2012                 return 0;
2013         }
2014         strcpy(plist,"");
2015         for (int i = start; i <= end; i++)
2016         {
2017                 if (parameters[i])
2018                 {
2019                         strlcat(plist,parameters[i],MAXBUF);
2020                 }
2021         }
2022
2023         j = 0;
2024         param = plist;
2025
2026         t = strlen(plist);
2027         for (int i = 0; i < t; i++)
2028         {
2029                 if (plist[i] == ',')
2030                 {
2031                         plist[i] = '\0';
2032                         strlcpy(blog[j++],param,MAXBUF);
2033                         param = plist+i+1;
2034                         if (j>20)
2035                         {
2036                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
2037                                 return 1;
2038                         }
2039                 }
2040         }
2041         strlcpy(blog[j++],param,MAXBUF);
2042         total = j;
2043
2044         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2045         {
2046                 strcat(keystr,",");
2047         }
2048
2049         if ((joins) && (keystr))
2050         {
2051                 if (strchr(keystr,','))
2052                 {
2053                         j = 0;
2054                         param = keystr;
2055                         t2 = strlen(keystr);
2056                         for (int i = 0; i < t2; i++)
2057                         {
2058                                 if (keystr[i] == ',')
2059                                 {
2060                                         keystr[i] = '\0';
2061                                         strlcpy(blog2[j++],param,MAXBUF);
2062                                         param = keystr+i+1;
2063                                 }
2064                         }
2065                         strlcpy(blog2[j++],param,MAXBUF);
2066                         total2 = j;
2067                 }
2068         }
2069
2070         for (j = 0; j < total; j++)
2071         {
2072                 if (blog[j])
2073                 {
2074                         pars[0] = blog[j];
2075                 }
2076                 for (q = end; q < pcnt-1; q++)
2077                 {
2078                         if (parameters[q+1])
2079                         {
2080                                 pars[q-end+1] = parameters[q+1];
2081                         }
2082                 }
2083                 if ((joins) && (parameters[1]))
2084                 {
2085                         if (pcnt > 1)
2086                         {
2087                                 pars[1] = blog2[j];
2088                         }
2089                         else
2090                         {
2091                                 pars[1] = NULL;
2092                         }
2093                 }
2094                 /* repeatedly call the function with the hacked parameter list */
2095                 if ((joins) && (pcnt > 1))
2096                 {
2097                         if (pars[1])
2098                         {
2099                                 // pars[1] already set up and containing key from blog2[j]
2100                                 fn(pars,2,u);
2101                         }
2102                         else
2103                         {
2104                                 pars[1] = parameters[1];
2105                                 fn(pars,2,u);
2106                         }
2107                 }
2108                 else
2109                 {
2110                         fn(pars,pcnt-(end-start),u);
2111                 }
2112         }
2113
2114         return 1;
2115 }
2116
2117
2118
2119 void kill_link(userrec *user,const char* r)
2120 {
2121         user_hash::iterator iter = clientlist.find(user->nick);
2122
2123         char reason[MAXBUF];
2124
2125         strncpy(reason,r,MAXBUF);
2126
2127         if (strlen(reason)>MAXQUIT)
2128         {
2129                 reason[MAXQUIT-1] = '\0';
2130         }
2131
2132         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2133         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2134         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2135
2136         /* bugfix, cant close() a nonblocking socket (sux!) */
2137         if (user->registered == 7) {
2138                 FOREACH_MOD OnUserQuit(user);
2139                 WriteCommonExcept(user,"QUIT :%s",reason);
2140
2141                 // Q token must go to ALL servers!!!
2142                 char buffer[MAXBUF];
2143                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2144                 NetSendToAll(buffer);
2145         }
2146
2147         FOREACH_MOD OnUserDisconnect(user);
2148
2149         if (user->fd > -1)
2150         {
2151                 shutdown(user->fd,2);
2152                 close(user->fd);
2153         }
2154
2155         if (user->registered == 7) {
2156                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2157                 AddWhoWas(user);
2158         }
2159
2160         if (user->registered == 7) {
2161                 purge_empty_chans(user);
2162         }
2163
2164         if (iter != clientlist.end())
2165         {
2166                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2167                 if ((iter->second) && (user->registered == 7)) {
2168                         if (iter->second) delete iter->second;
2169                 }
2170                 clientlist.erase(iter);
2171         }
2172 }
2173
2174 void kill_link_silent(userrec *user,const char* r)
2175 {
2176         user_hash::iterator iter = clientlist.find(user->nick);
2177
2178         char reason[MAXBUF];
2179
2180         strncpy(reason,r,MAXBUF);
2181
2182         if (strlen(reason)>MAXQUIT)
2183         {
2184                 reason[MAXQUIT-1] = '\0';
2185         }
2186
2187         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2188         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2189         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2190
2191         /* bugfix, cant close() a nonblocking socket (sux!) */
2192         if (user->registered == 7) {
2193                 FOREACH_MOD OnUserQuit(user);
2194                 WriteCommonExcept(user,"QUIT :%s",reason);
2195
2196                 // Q token must go to ALL servers!!!
2197                 char buffer[MAXBUF];
2198                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2199                 NetSendToAll(buffer);
2200         }
2201
2202         FOREACH_MOD OnUserDisconnect(user);
2203
2204         if (user->fd > -1)
2205         {
2206                 shutdown(user->fd,2);
2207                 close(user->fd);
2208         }
2209
2210         if (user->registered == 7) {
2211                 purge_empty_chans(user);
2212         }
2213
2214         if (iter != clientlist.end())
2215         {
2216                 log(DEBUG,"deleting user hash value %lu",(unsigned long)iter->second);
2217                 if ((iter->second) && (user->registered == 7)) {
2218                         if (iter->second) delete iter->second;
2219                 }
2220                 clientlist.erase(iter);
2221         }
2222 }
2223
2224
2225
2226 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2227
2228 char* Passwd(userrec *user)
2229 {
2230         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2231         {
2232                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2233                 {
2234                         return i->pass;
2235                 }
2236         }
2237         return "";
2238 }
2239
2240 bool IsDenied(userrec *user)
2241 {
2242         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2243         {
2244                 if (match(user->host,i->host) && (i->type == CC_DENY))
2245                 {
2246                         return true;
2247                 }
2248         }
2249         return false;
2250 }
2251
2252
2253
2254
2255 /* sends out an error notice to all connected clients (not to be used
2256  * lightly!) */
2257
2258 void send_error(char *s)
2259 {
2260         log(DEBUG,"send_error: %s",s);
2261         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2262         {
2263                 if (isnick(i->second->nick))
2264                 {
2265                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2266                 }
2267                 else
2268                 {
2269                         // fix - unregistered connections receive ERROR, not NOTICE
2270                         Write(i->second->fd,"ERROR :%s",s);
2271                 }
2272         }
2273 }
2274
2275 void Error(int status)
2276 {
2277         signal (SIGALRM, SIG_IGN);
2278         signal (SIGPIPE, SIG_IGN);
2279         signal (SIGTERM, SIG_IGN);
2280         signal (SIGABRT, SIG_IGN);
2281         signal (SIGSEGV, SIG_IGN);
2282         signal (SIGURG, SIG_IGN);
2283         signal (SIGKILL, SIG_IGN);
2284         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2285         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2286         Exit(status);
2287 }
2288
2289
2290 int main(int argc, char **argv)
2291 {
2292         Start();
2293         srand(time(NULL));
2294         log(DEBUG,"*** InspIRCd starting up!");
2295         if (!FileExists(CONFIG_FILE))
2296         {
2297                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2298                 log(DEFAULT,"main: no config");
2299                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2300                 Exit(ERROR);
2301         }
2302         if (argc > 1) {
2303                 for (int i = 1; i < argc; i++)
2304                 {
2305                         if (!strcmp(argv[i],"-nofork")) {
2306                                 nofork = true;
2307                         }
2308                         if (!strcmp(argv[i],"-wait")) {
2309                                 sleep(6);
2310                         }
2311                         if (!strcmp(argv[i],"-nolimit")) {
2312                                 unlimitcore = true;
2313                         }
2314                 }
2315         }
2316         strlcpy(MyExecutable,argv[0],MAXBUF);
2317
2318         if (InspIRCd() == ERROR)
2319         {
2320                 log(DEFAULT,"main: daemon function bailed");
2321                 printf("ERROR: could not initialise. Shutting down.\n");
2322                 Exit(ERROR);
2323         }
2324         Exit(TRUE);
2325         return 0;
2326 }
2327
2328 template<typename T> inline string ConvToStr(const T &in)
2329 {
2330         stringstream tmp;
2331         if (!(tmp << in)) return string();
2332         return tmp.str();
2333 }
2334
2335 /* re-allocates a nick in the user_hash after they change nicknames,
2336  * returns a pointer to the new user as it may have moved */
2337
2338 userrec* ReHashNick(char* Old, char* New)
2339 {
2340         //user_hash::iterator newnick;
2341         user_hash::iterator oldnick = clientlist.find(Old);
2342
2343         log(DEBUG,"ReHashNick: %s %s",Old,New);
2344
2345         if (!strcasecmp(Old,New))
2346         {
2347                 log(DEBUG,"old nick is new nick, skipping");
2348                 return oldnick->second;
2349         }
2350
2351         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2352
2353         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2354
2355         clientlist[New] = new userrec();
2356         clientlist[New] = oldnick->second;
2357         clientlist.erase(oldnick);
2358
2359         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2360
2361         return clientlist[New];
2362 }
2363
2364 /* adds or updates an entry in the whowas list */
2365 void AddWhoWas(userrec* u)
2366 {
2367         user_hash::iterator iter = whowas.find(u->nick);
2368         userrec *a = new userrec();
2369         strlcpy(a->nick,u->nick,NICKMAX);
2370         strlcpy(a->ident,u->ident,64);
2371         strlcpy(a->dhost,u->dhost,256);
2372         strlcpy(a->host,u->host,256);
2373         strlcpy(a->fullname,u->fullname,128);
2374         strlcpy(a->server,u->server,256);
2375         a->signon = u->signon;
2376
2377         /* MAX_WHOWAS:   max number of /WHOWAS items
2378          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2379          *               can be replaced by a newer one
2380          */
2381
2382         if (iter == whowas.end())
2383         {
2384                 if (whowas.size() == WHOWAS_MAX)
2385                 {
2386                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2387                         {
2388                                 // 3600 seconds in an hour ;)
2389                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2390                                 {
2391                                         if (i->second) delete i->second;
2392                                         i->second = a;
2393                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2394                                         return;
2395                                 }
2396                         }
2397                 }
2398                 else
2399                 {
2400                         log(DEBUG,"added fresh WHOWAS entry");
2401                         whowas[a->nick] = a;
2402                 }
2403         }
2404         else
2405         {
2406                 log(DEBUG,"updated WHOWAS entry");
2407                 if (iter->second) delete iter->second;
2408                 iter->second = a;
2409         }
2410 }
2411
2412
2413 /* add a client connection to the sockets list */
2414 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2415 {
2416         string tempnick;
2417         char tn2[MAXBUF];
2418         user_hash::iterator iter;
2419
2420         tempnick = ConvToStr(socket) + "-unknown";
2421         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2422
2423         iter = clientlist.find(tempnick);
2424
2425         if (iter != clientlist.end()) return;
2426
2427         /*
2428          * It is OK to access the value here this way since we know
2429          * it exists, we just created it above.
2430          *
2431          * At NO other time should you access a value in a map or a
2432          * hash_map this way.
2433          */
2434         clientlist[tempnick] = new userrec();
2435
2436         NonBlocking(socket);
2437         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2438
2439         clientlist[tempnick]->fd = socket;
2440         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2441         strncpy(clientlist[tempnick]->host, host,160);
2442         strncpy(clientlist[tempnick]->dhost, host,160);
2443         strncpy(clientlist[tempnick]->server, ServerName,256);
2444         strncpy(clientlist[tempnick]->ident, "unknown",12);
2445         clientlist[tempnick]->registered = 0;
2446         clientlist[tempnick]->signon = TIME+dns_timeout;
2447         clientlist[tempnick]->lastping = 1;
2448         clientlist[tempnick]->port = port;
2449         strncpy(clientlist[tempnick]->ip,ip,32);
2450
2451         // set the registration timeout for this user
2452         unsigned long class_regtimeout = 90;
2453         int class_flood = 0;
2454         long class_threshold = 5;
2455
2456         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2457         {
2458                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2459                 {
2460                         class_regtimeout = (unsigned long)i->registration_timeout;
2461                         class_flood = i->flood;
2462                         clientlist[tempnick]->pingmax = i->pingtime;
2463                         class_threshold = i->threshold;
2464                         break;
2465                 }
2466         }
2467
2468         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2469         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2470         clientlist[tempnick]->flood = class_flood;
2471         clientlist[tempnick]->threshold = class_threshold;
2472
2473         for (int i = 0; i < MAXCHANS; i++)
2474         {
2475                 clientlist[tempnick]->chans[i].channel = NULL;
2476                 clientlist[tempnick]->chans[i].uc_modes = 0;
2477         }
2478
2479         if (clientlist.size() == MAXCLIENTS)
2480                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2481
2482
2483         char* e = matches_exception(ip);
2484         if (!e)
2485         {
2486                 char* r = matches_zline(ip);
2487                 if (r)
2488                 {
2489                         char reason[MAXBUF];
2490                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2491                         kill_link(clientlist[tempnick],reason);
2492                 }
2493         }
2494 }
2495
2496 // this function counts all users connected, wether they are registered or NOT.
2497 int usercnt(void)
2498 {
2499         return clientlist.size();
2500 }
2501
2502 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2503 int registered_usercount(void)
2504 {
2505         int c = 0;
2506         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2507         {
2508                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2509         }
2510         return c;
2511 }
2512
2513 int usercount_invisible(void)
2514 {
2515         int c = 0;
2516
2517         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2518         {
2519                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2520         }
2521         return c;
2522 }
2523
2524 int usercount_opers(void)
2525 {
2526         int c = 0;
2527
2528         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2529         {
2530                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2531         }
2532         return c;
2533 }
2534
2535 int usercount_unknown(void)
2536 {
2537         int c = 0;
2538
2539         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2540         {
2541                 if ((i->second->fd) && (i->second->registered != 7))
2542                         c++;
2543         }
2544         return c;
2545 }
2546
2547 long chancount(void)
2548 {
2549         return chanlist.size();
2550 }
2551
2552 long count_servs(void)
2553 {
2554         int c = 0;
2555         for (int i = 0; i < 32; i++)
2556         {
2557                 if (me[i] != NULL)
2558                 {
2559                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2560                         {
2561                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2562                                 {
2563                                         c++;
2564                                 }
2565                         }
2566                 }
2567         }
2568         return c;
2569 }
2570
2571 long servercount(void)
2572 {
2573         return count_servs()+1;
2574 }
2575
2576 long local_count()
2577 {
2578         int c = 0;
2579         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2580         {
2581                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2582         }
2583         return c;
2584 }
2585
2586
2587 void ShowMOTD(userrec *user)
2588 {
2589         std::string WholeMOTD = "";
2590         if (!MOTD.size())
2591         {
2592                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2593                 return;
2594         }
2595         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2596         for (int i = 0; i != MOTD.size(); i++)
2597         {
2598                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2599         }
2600         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2601         // only one write operation
2602         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2603
2604 }
2605
2606 void ShowRULES(userrec *user)
2607 {
2608         if (!RULES.size())
2609         {
2610                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2611                 return;
2612         }
2613         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2614         for (int i = 0; i != RULES.size(); i++)
2615         {
2616                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2617         }
2618         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2619 }
2620
2621 /* shows the message of the day, and any other on-logon stuff */
2622 void FullConnectUser(userrec* user)
2623 {
2624         user->registered = 7;
2625         user->idle_lastmsg = TIME;
2626         log(DEBUG,"ConnectUser: %s",user->nick);
2627
2628         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2629         {
2630                 kill_link(user,"Invalid password");
2631                 return;
2632         }
2633         if (IsDenied(user))
2634         {
2635                 kill_link(user,"Unauthorised connection");
2636                 return;
2637         }
2638
2639         char match_against[MAXBUF];
2640         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2641         char* e = matches_exception(match_against);
2642         if (!e)
2643         {
2644                 char* r = matches_gline(match_against);
2645                 if (r)
2646                 {
2647                         char reason[MAXBUF];
2648                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2649                         kill_link_silent(user,reason);
2650                         return;
2651                 }
2652                 r = matches_kline(user->host);
2653                 if (r)
2654                 {
2655                         char reason[MAXBUF];
2656                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2657                         kill_link_silent(user,reason);
2658                         return;
2659                 }
2660         }
2661
2662         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2663         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2664         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2665         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2666         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2667         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2668         std::stringstream v;
2669         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2670         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2671         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2672         v << std::string(Network);
2673         std::string data005 = v.str();
2674         FOREACH_MOD On005Numeric(data005);
2675         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2676         // so i'd better split it :)
2677         std::stringstream out(data005);
2678         std::string token = "";
2679         std::string line5 = "";
2680         int token_counter = 0;
2681         while (!out.eof())
2682         {
2683                 out >> token;
2684                 line5 = line5 + token + " ";
2685                 token_counter++;
2686                 if ((token_counter >= 13) || (out.eof() == true))
2687                 {
2688                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2689                         line5 = "";
2690                         token_counter = 0;
2691                 }
2692         }
2693         ShowMOTD(user);
2694         FOREACH_MOD OnUserConnect(user);
2695         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2696
2697         char buffer[MAXBUF];
2698         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);
2699         NetSendToAll(buffer);
2700 }
2701
2702
2703 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2704 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2705 // registration timeout maximum seconds)
2706 bool AllModulesReportReady(userrec* user)
2707 {
2708         for (int i = 0; i <= MODCOUNT; i++)
2709         {
2710                 int res = modules[i]->OnCheckReady(user);
2711                         if (!res)
2712                                 return false;
2713         }
2714         return true;
2715 }
2716
2717 /* shows the message of the day, and any other on-logon stuff */
2718 void ConnectUser(userrec *user)
2719 {
2720         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2721         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2722         {
2723                 FullConnectUser(user);
2724         }
2725 }
2726
2727 std::string GetVersionString()
2728 {
2729         char Revision[] = "$Revision$";
2730         char versiondata[MAXBUF];
2731         char *s1 = Revision;
2732         char *savept;
2733         char *v2 = strtok_r(s1," ",&savept);
2734         s1 = savept;
2735         v2 = strtok_r(s1," ",&savept);
2736         s1 = savept;
2737         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s (O=%lu)",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2738         return versiondata;
2739 }
2740
2741 void handle_version(char **parameters, int pcnt, userrec *user)
2742 {
2743         if (!pcnt)
2744         {
2745                 WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2746         }
2747         else
2748         {
2749                 if (match(ServerName,parameters[0]))
2750                 {
2751                         WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2752                         return;
2753                 }
2754                 bool displayed = false, found = false;
2755                 for (int j = 0; j < 32; j++)
2756                 {
2757                         if (me[j] != NULL)
2758                         {
2759                                 for (int x = 0; x < me[j]->connectors.size(); x++)
2760                                 {
2761                                         if (match(me[j]->connectors[x].GetServerName().c_str(),parameters[0]))
2762                                         {
2763                                                 found = true;
2764                                                 if ((me[j]->connectors[x].GetVersionString() != "") && (!displayed))
2765                                                 {
2766                                                         displayed = true;
2767                                                         WriteServ(user->fd,"351 %s :%s",user->nick,me[j]->connectors[x].GetVersionString().c_str());
2768                                                 }
2769                                         }
2770                                 }
2771                         }
2772                 }
2773                 if ((!displayed) && (found))
2774                 {
2775                         WriteServ(user->fd,"402 %s %s :Server %s has no version information",user->nick,parameters[0],parameters[0]);
2776                         return;
2777                 }
2778                 WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2779         }
2780         return;
2781 }
2782
2783
2784 // calls a handler function for a command
2785
2786 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2787 {
2788                 for (int i = 0; i < cmdlist.size(); i++)
2789                 {
2790                         if (!strcasecmp(cmdlist[i].command,commandname))
2791                         {
2792                                 if (cmdlist[i].handler_function)
2793                                 {
2794                                         if (pcnt>=cmdlist[i].min_params)
2795                                         {
2796                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2797                                                 {
2798                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2799                                                 }
2800                                         }
2801                                 }
2802                         }
2803                 }
2804 }
2805
2806 void DoSplitEveryone()
2807 {
2808         bool go_again = true;
2809         while (go_again)
2810         {
2811                 go_again = false;
2812                 for (int i = 0; i < 32; i++)
2813                 {
2814                         if (me[i] != NULL)
2815                         {
2816                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2817                                 {
2818                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2819                                         {
2820                                                 j->routes.clear();
2821                                                 j->CloseConnection();
2822                                                 me[i]->connectors.erase(j);
2823                                                 go_again = true;
2824                                                 break;
2825                                         }
2826                                 }
2827                         }
2828                 }
2829         }
2830         log(DEBUG,"Removed server. Will remove clients...");
2831         // iterate through the userlist and remove all users on this server.
2832         // because we're dealing with a mesh, we dont have to deal with anything
2833         // "down-route" from this server (nice huh)
2834         go_again = true;
2835         char reason[MAXBUF];
2836         while (go_again)
2837         {
2838                 go_again = false;
2839                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2840                 {
2841                         if (strcasecmp(u->second->server,ServerName))
2842                         {
2843                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2844                                 kill_link(u->second,reason);
2845                                 go_again = true;
2846                                 break;
2847                         }
2848                 }
2849         }
2850 }
2851
2852
2853
2854 char islast(const char* s)
2855 {
2856         char c = '`';
2857         for (int j = 0; j < 32; j++)
2858         {
2859                 if (me[j] != NULL)
2860                 {
2861                         for (int k = 0; k < me[j]->connectors.size(); k++)
2862                         {
2863                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2864                                 {
2865                                         c = '|';
2866                                 }
2867                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2868                                 {
2869                                         c = '`';
2870                                 }
2871                         }
2872                 }
2873         }
2874         return c;
2875 }
2876
2877 long map_count(const char* s)
2878 {
2879         int c = 0;
2880         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2881         {
2882                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2883         }
2884         return c;
2885 }
2886
2887
2888 void force_nickchange(userrec* user,const char* newnick)
2889 {
2890         char nick[MAXBUF];
2891         int MOD_RESULT = 0;
2892
2893         strcpy(nick,"");
2894
2895         FOREACH_RESULT(OnUserPreNick(user,newnick));
2896         if (MOD_RESULT) {
2897                 kill_link(user,"Nickname collision");
2898                 return;
2899         }
2900         if (matches_qline(newnick))
2901         {
2902                 kill_link(user,"Nickname collision");
2903                 return;
2904         }
2905
2906         if (user)
2907         {
2908                 if (newnick)
2909                 {
2910                         strncpy(nick,newnick,MAXBUF);
2911                 }
2912                 if (user->registered == 7)
2913                 {
2914                         char* pars[1];
2915                         pars[0] = nick;
2916                         handle_nick(pars,1,user);
2917                 }
2918         }
2919 }
2920
2921
2922 int process_parameters(char **command_p,char *parameters)
2923 {
2924         int j = 0;
2925         int q = strlen(parameters);
2926         if (!q)
2927         {
2928                 /* no parameters, command_p invalid! */
2929                 return 0;
2930         }
2931         if (parameters[0] == ':')
2932         {
2933                 command_p[0] = parameters+1;
2934                 return 1;
2935         }
2936         if (q)
2937         {
2938                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2939                 {
2940                         /* only one parameter */
2941                         command_p[0] = parameters;
2942                         if (parameters[0] == ':')
2943                         {
2944                                 if (strchr(parameters,' ') != NULL)
2945                                 {
2946                                         command_p[0]++;
2947                                 }
2948                         }
2949                         return 1;
2950                 }
2951         }
2952         command_p[j++] = parameters;
2953         for (int i = 0; i <= q; i++)
2954         {
2955                 if (parameters[i] == ' ')
2956                 {
2957                         command_p[j++] = parameters+i+1;
2958                         parameters[i] = '\0';
2959                         if (command_p[j-1][0] == ':')
2960                         {
2961                                 *command_p[j-1]++; /* remove dodgy ":" */
2962                                 break;
2963                                 /* parameter like this marks end of the sequence */
2964                         }
2965                 }
2966         }
2967         return j; /* returns total number of items in the list */
2968 }
2969
2970 void process_command(userrec *user, char* cmd)
2971 {
2972         char *parameters;
2973         char *command;
2974         char *command_p[127];
2975         char p[MAXBUF], temp[MAXBUF];
2976         int j, items, cmd_found;
2977
2978         for (int i = 0; i < 127; i++)
2979                 command_p[i] = NULL;
2980
2981         if (!user)
2982         {
2983                 return;
2984         }
2985         if (!cmd)
2986         {
2987                 return;
2988         }
2989         if (!cmd[0])
2990         {
2991                 return;
2992         }
2993
2994         int total_params = 0;
2995         if (strlen(cmd)>2)
2996         {
2997                 for (int q = 0; q < strlen(cmd)-1; q++)
2998                 {
2999                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
3000                         {
3001                                 total_params++;
3002                                 // found a 'trailing', we dont count them after this.
3003                                 break;
3004                         }
3005                         if (cmd[q] == ' ')
3006                                 total_params++;
3007                 }
3008         }
3009
3010         // another phidjit bug...
3011         if (total_params > 126)
3012         {
3013                 *(strchr(cmd,' ')) = '\0';
3014                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
3015                 return;
3016         }
3017
3018         strlcpy(temp,cmd,MAXBUF);
3019
3020         std::string tmp = cmd;
3021         for (int i = 0; i <= MODCOUNT; i++)
3022         {
3023                 std::string oldtmp = tmp;
3024                 modules[i]->OnServerRaw(tmp,true,user);
3025                 if (oldtmp != tmp)
3026                 {
3027                         log(DEBUG,"A Module changed the input string!");
3028                         log(DEBUG,"New string: %s",tmp.c_str());
3029                         log(DEBUG,"Old string: %s",oldtmp.c_str());
3030                         break;
3031                 }
3032         }
3033         strlcpy(cmd,tmp.c_str(),MAXBUF);
3034         strlcpy(temp,cmd,MAXBUF);
3035
3036         if (!strchr(cmd,' '))
3037         {
3038                 /* no parameters, lets skip the formalities and not chop up
3039                  * the string */
3040                 log(DEBUG,"About to preprocess command with no params");
3041                 items = 0;
3042                 command_p[0] = NULL;
3043                 parameters = NULL;
3044                 for (int i = 0; i <= strlen(cmd); i++)
3045                 {
3046                         cmd[i] = toupper(cmd[i]);
3047                 }
3048                 command = cmd;
3049         }
3050         else
3051         {
3052                 strcpy(cmd,"");
3053                 j = 0;
3054                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
3055                 for (int i = 0; i < strlen(temp); i++)
3056                 {
3057                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
3058                         {
3059                                 cmd[j++] = temp[i];
3060                                 cmd[j] = 0;
3061                         }
3062                 }
3063                 /* split the full string into a command plus parameters */
3064                 parameters = p;
3065                 strcpy(p," ");
3066                 command = cmd;
3067                 if (strchr(cmd,' '))
3068                 {
3069                         for (int i = 0; i <= strlen(cmd); i++)
3070                         {
3071                                 /* capitalise the command ONLY, leave params intact */
3072                                 cmd[i] = toupper(cmd[i]);
3073                                 /* are we nearly there yet?! :P */
3074                                 if (cmd[i] == ' ')
3075                                 {
3076                                         command = cmd;
3077                                         parameters = cmd+i+1;
3078                                         cmd[i] = '\0';
3079                                         break;
3080                                 }
3081                         }
3082                 }
3083                 else
3084                 {
3085                         for (int i = 0; i <= strlen(cmd); i++)
3086                         {
3087                                 cmd[i] = toupper(cmd[i]);
3088                         }
3089                 }
3090
3091         }
3092         cmd_found = 0;
3093
3094         if (strlen(command)>MAXCOMMAND)
3095         {
3096                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
3097                 return;
3098         }
3099
3100         for (int x = 0; x < strlen(command); x++)
3101         {
3102                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
3103                 {
3104                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
3105                         {
3106                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
3107                                 {
3108                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3109                                         return;
3110                                 }
3111                         }
3112                 }
3113         }
3114
3115         for (int i = 0; i != cmdlist.size(); i++)
3116         {
3117                 if (cmdlist[i].command[0])
3118                 {
3119                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3120                         {
3121                                 if (parameters)
3122                                 {
3123                                         if (parameters[0])
3124                                         {
3125                                                 items = process_parameters(command_p,parameters);
3126                                         }
3127                                         else
3128                                         {
3129                                                 items = 0;
3130                                                 command_p[0] = NULL;
3131                                         }
3132                                 }
3133                                 else
3134                                 {
3135                                         items = 0;
3136                                         command_p[0] = NULL;
3137                                 }
3138
3139                                 if (user)
3140                                 {
3141                                         /* activity resets the ping pending timer */
3142                                         user->nping = TIME + user->pingmax;
3143                                         if ((items) < cmdlist[i].min_params)
3144                                         {
3145                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3146                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3147                                                 return;
3148                                         }
3149                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3150                                         {
3151                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3152                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3153                                                 cmd_found = 1;
3154                                                 return;
3155                                         }
3156                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3157                                         {
3158                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3159                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3160                                                 cmd_found = 1;
3161                                                 return;
3162                                         }
3163                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3164                                          * deny command! */
3165                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3166                                         {
3167                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3168                                                 {
3169                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3170                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3171                                                         return;
3172                                                 }
3173                                         }
3174                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3175                                         {
3176                                                 char* mycmd;
3177                                                 char* savept2;
3178                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3179                                                 while (mycmd)
3180                                                 {
3181                                                         if (!strcasecmp(mycmd,command))
3182                                                         {
3183                                                                 // command is disabled!
3184                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3185                                                                 return;
3186                                                         }
3187                                                         mycmd = strtok_r(NULL," ",&savept2);
3188                                                 }
3189
3190
3191                                         }
3192                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3193                                         {
3194                                                 if (cmdlist[i].handler_function)
3195                                                 {
3196
3197                                                         /* ikky /stats counters */
3198                                                         if (temp)
3199                                                         {
3200                                                                 if (user)
3201                                                                 {
3202                                                                         user->bytes_in += strlen(temp);
3203                                                                         user->cmds_in++;
3204                                                                         user->bytes_out+=strlen(temp);
3205                                                                         user->cmds_out++;
3206                                                                 }
3207                                                                 cmdlist[i].use_count++;
3208                                                                 cmdlist[i].total_bytes+=strlen(temp);
3209                                                         }
3210
3211                                                         int MOD_RESULT = 0;
3212                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3213                                                         if (MOD_RESULT == 1) {
3214                                                                 return;
3215                                                         }
3216
3217                                                         /* WARNING: nothing may come after the
3218                                                          * command handler call, as the handler
3219                                                          * may free the user structure! */
3220
3221                                                         cmdlist[i].handler_function(command_p,items,user);
3222                                                 }
3223                                                 return;
3224                                         }
3225                                         else
3226                                         {
3227                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3228                                                 return;
3229                                         }
3230                                 }
3231                                 cmd_found = 1;
3232                         }
3233                 }
3234         }
3235         if ((!cmd_found) && (user))
3236         {
3237                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3238         }
3239 }
3240
3241
3242 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3243 {
3244         command_t comm;
3245         /* create the command and push it onto the table */
3246         strlcpy(comm.command,cmd,MAXBUF);
3247         strlcpy(comm.source,source,MAXBUF);
3248         comm.handler_function = f;
3249         comm.flags_needed = flags;
3250         comm.min_params = minparams;
3251         comm.use_count = 0;
3252         comm.total_bytes = 0;
3253         cmdlist.push_back(comm);
3254         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3255 }
3256
3257 bool removecommands(const char* source)
3258 {
3259         bool go_again = true;
3260         while (go_again)
3261         {
3262                 go_again = false;
3263                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3264                 {
3265                         if (!strcmp(i->source,source))
3266                         {
3267                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3268                                 cmdlist.erase(i);
3269                                 go_again = true;
3270                                 break;
3271                         }
3272                 }
3273         }
3274         return true;
3275 }
3276
3277 void SetupCommandTable(void)
3278 {
3279         createcommand("USER",handle_user,0,4,"<core>");
3280         createcommand("NICK",handle_nick,0,1,"<core>");
3281         createcommand("QUIT",handle_quit,0,0,"<core>");
3282         createcommand("VERSION",handle_version,0,0,"<core>");
3283         createcommand("PING",handle_ping,0,1,"<core>");
3284         createcommand("PONG",handle_pong,0,1,"<core>");
3285         createcommand("ADMIN",handle_admin,0,0,"<core>");
3286         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3287         createcommand("INFO",handle_info,0,0,"<core>");
3288         createcommand("TIME",handle_time,0,0,"<core>");
3289         createcommand("WHOIS",handle_whois,0,1,"<core>");
3290         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3291         createcommand("NOTICE",handle_notice,0,2,"<core>");
3292         createcommand("JOIN",handle_join,0,1,"<core>");
3293         createcommand("NAMES",handle_names,0,0,"<core>");
3294         createcommand("PART",handle_part,0,1,"<core>");
3295         createcommand("KICK",handle_kick,0,2,"<core>");
3296         createcommand("MODE",handle_mode,0,1,"<core>");
3297         createcommand("TOPIC",handle_topic,0,1,"<core>");
3298         createcommand("WHO",handle_who,0,1,"<core>");
3299         createcommand("MOTD",handle_motd,0,0,"<core>");
3300         createcommand("RULES",handle_rules,0,0,"<core>");
3301         createcommand("OPER",handle_oper,0,2,"<core>");
3302         createcommand("LIST",handle_list,0,0,"<core>");
3303         createcommand("DIE",handle_die,'o',1,"<core>");
3304         createcommand("RESTART",handle_restart,'o',1,"<core>");
3305         createcommand("KILL",handle_kill,'o',2,"<core>");
3306         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3307         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3308         createcommand("STATS",handle_stats,0,1,"<core>");
3309         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3310         createcommand("AWAY",handle_away,0,0,"<core>");
3311         createcommand("ISON",handle_ison,0,0,"<core>");
3312         createcommand("SUMMON",handle_summon,0,0,"<core>");
3313         createcommand("USERS",handle_users,0,0,"<core>");
3314         createcommand("INVITE",handle_invite,0,2,"<core>");
3315         createcommand("PASS",handle_pass,0,1,"<core>");
3316         createcommand("TRACE",handle_trace,'o',0,"<core>");
3317         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3318         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3319         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3320         createcommand("MODULES",handle_modules,0,0,"<core>");
3321         createcommand("LINKS",handle_links,0,0,"<core>");
3322         createcommand("MAP",handle_map,0,0,"<core>");
3323         createcommand("KLINE",handle_kline,'o',1,"<core>");
3324         createcommand("GLINE",handle_gline,'o',1,"<core>");
3325         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3326         createcommand("QLINE",handle_qline,'o',1,"<core>");
3327         createcommand("ELINE",handle_eline,'o',1,"<core>");
3328         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3329         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3330         createcommand("SERVER",handle_server,0,0,"<core>");
3331 }
3332
3333 void process_buffer(const char* cmdbuf,userrec *user)
3334 {
3335         if (!user)
3336         {
3337                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3338                 return;
3339         }
3340         char cmd[MAXBUF];
3341         if (!cmdbuf)
3342         {
3343                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3344                 return;
3345         }
3346         if (!cmdbuf[0])
3347         {
3348                 return;
3349         }
3350         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3351
3352         strlcpy(cmd,cmdbuf,MAXBUF);
3353         if (!cmd[0])
3354         {
3355                 return;
3356         }
3357         int sl = strlen(cmd)-1;
3358         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3359         {
3360                 cmd[sl] = '\0';
3361         }
3362         sl = strlen(cmd)-1;
3363         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3364         {
3365                 cmd[sl] = '\0';
3366         }
3367         sl = strlen(cmd)-1;
3368         while (cmd[sl] == ' ') // strip trailing spaces
3369         {
3370                 cmd[sl] = '\0';
3371                 sl = strlen(cmd)-1;
3372         }
3373
3374         if (!cmd[0])
3375         {
3376                 return;
3377         }
3378         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3379         tidystring(cmd);
3380         if ((user) && (cmd))
3381         {
3382                 process_command(user,cmd);
3383         }
3384 }
3385
3386 void DoSync(serverrec* serv, char* tcp_host)
3387 {
3388         char data[MAXBUF];
3389         log(DEBUG,"Sending sync");
3390         // send start of sync marker: Y <timestamp>
3391         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3392         // except the ones its receiving it from.
3393         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3394         serv->SendPacket(data,tcp_host);
3395         // send users and channels
3396
3397         NetSendMyRoutingTable();
3398
3399         // send all routing table and uline voodoo. The ordering of these commands is IMPORTANT!
3400         for (int j = 0; j < 32; j++)
3401         {
3402                 if (me[j] != NULL)
3403                 {
3404                         for (int k = 0; k < me[j]->connectors.size(); k++)
3405                         {
3406                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3407                                 {
3408                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3409                                         serv->SendPacket(data,tcp_host);
3410                                 }
3411                         }
3412                 }
3413         }
3414
3415         // send our version for the remote side to cache
3416         snprintf(data,MAXBUF,"v %s %s",ServerName,GetVersionString().c_str());
3417         serv->SendPacket(data,tcp_host);
3418
3419         // sync the users and channels, give the modules a look-in.
3420         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3421         {
3422                 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);
3423                 serv->SendPacket(data,tcp_host);
3424                 if (strchr(u->second->modes,'o'))
3425                 {
3426                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3427                         serv->SendPacket(data,tcp_host);
3428                 }
3429                 for (int i = 0; i <= MODCOUNT; i++)
3430                 {
3431                         string_list l = modules[i]->OnUserSync(u->second);
3432                         for (int j = 0; j < l.size(); j++)
3433                         {
3434                                 strlcpy(data,l[j].c_str(),MAXBUF);
3435                                 serv->SendPacket(data,tcp_host);
3436                         }
3437                 }
3438                 char* chl = chlist(u->second);
3439                 if (strcmp(chl,""))
3440                 {
3441                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3442                         serv->SendPacket(data,tcp_host);
3443                 }
3444         }
3445         // send channel modes, topics etc...
3446         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3447         {
3448                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3449                 serv->SendPacket(data,tcp_host);
3450                 for (int i = 0; i <= MODCOUNT; i++)
3451                 {
3452                         string_list l = modules[i]->OnChannelSync(c->second);
3453                         for (int j = 0; j < l.size(); j++)
3454                         {
3455                                 strlcpy(data,l[j].c_str(),MAXBUF);
3456                                 serv->SendPacket(data,tcp_host);
3457                         }
3458                 }
3459                 if (c->second->topic[0])
3460                 {
3461                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3462                         serv->SendPacket(data,tcp_host);
3463                 }
3464                 // send current banlist
3465
3466                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3467                 {
3468                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3469                         serv->SendPacket(data,tcp_host);
3470                 }
3471         }
3472         // sync global zlines, glines, etc
3473         sync_xlines(serv,tcp_host);
3474
3475         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3476         serv->SendPacket(data,tcp_host);
3477         log(DEBUG,"Sent sync");
3478         // ircd sends its serverlist after the end of sync here
3479 }
3480
3481
3482 void NetSendMyRoutingTable()
3483 {
3484         // send out a line saying what is reachable to us.
3485         // E.g. if A is linked to B C and D, send out:
3486         // $ A B C D
3487         // if its only linked to B and D send out:
3488         // $ A B D
3489         // if it has no links, dont even send out the line at all.
3490         char buffer[MAXBUF];
3491         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3492         bool sendit = false;
3493         for (int i = 0; i < 32; i++)
3494         {
3495                 if (me[i] != NULL)
3496                 {
3497                         for (int j = 0; j < me[i]->connectors.size(); j++)
3498                         {
3499                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3500                                 {
3501                                         strlcat(buffer," ",MAXBUF);
3502                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3503                                         sendit = true;
3504                                 }
3505                         }
3506                 }
3507         }
3508         if (sendit)
3509                 NetSendToAll(buffer);
3510 }
3511
3512
3513 void DoSplit(const char* params)
3514 {
3515         bool go_again = true;
3516         while (go_again)
3517         {
3518                 go_again = false;
3519                 for (int i = 0; i < 32; i++)
3520                 {
3521                         if (me[i] != NULL)
3522                         {
3523                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3524                                 {
3525                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3526                                         {
3527                                                 j->routes.clear();
3528                                                 j->CloseConnection();
3529                                                 me[i]->connectors.erase(j);
3530                                                 go_again = true;
3531                                                 break;
3532                                         }
3533                                 }
3534                         }
3535                 }
3536         }
3537         log(DEBUG,"Removed server. Will remove clients...");
3538         // iterate through the userlist and remove all users on this server.
3539         // because we're dealing with a mesh, we dont have to deal with anything
3540         // "down-route" from this server (nice huh)
3541         go_again = true;
3542         char reason[MAXBUF];
3543         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3544         while (go_again)
3545         {
3546                 go_again = false;
3547                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3548                 {
3549                         if (!strcasecmp(u->second->server,params))
3550                         {
3551                                 kill_link(u->second,reason);
3552                                 go_again = true;
3553                                 break;
3554                         }
3555                 }
3556         }
3557 }
3558
3559 // removes a server. Will NOT remove its users!
3560
3561 void RemoveServer(const char* name)
3562 {
3563         bool go_again = true;
3564         while (go_again)
3565         {
3566                 go_again = false;
3567                 for (int i = 0; i < 32; i++)
3568                 {
3569                         if (me[i] != NULL)
3570                         {
3571                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3572                                 {
3573                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3574                                         {
3575                                                 j->routes.clear();
3576                                                 j->CloseConnection();
3577                                                 me[i]->connectors.erase(j);
3578                                                 go_again = true;
3579                                                 break;
3580                                         }
3581                                 }
3582                         }
3583                 }
3584         }
3585 }
3586
3587
3588 char MODERR[MAXBUF];
3589
3590 char* ModuleError()
3591 {
3592         return MODERR;
3593 }
3594
3595 void erase_factory(int j)
3596 {
3597         int v = 0;
3598         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3599         {
3600                 if (v == j)
3601                 {
3602                         factory.erase(t);
3603                         factory.push_back(NULL);
3604                         return;
3605                 }
3606                 v++;
3607         }
3608 }
3609
3610 void erase_module(int j)
3611 {
3612         int v1 = 0;
3613         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3614         {
3615                 if (v1 == j)
3616                 {
3617                         delete *m;
3618                         modules.erase(m);
3619                         modules.push_back(NULL);
3620                         break;
3621                 }
3622                 v1++;
3623         }
3624         int v2 = 0;
3625         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3626         {
3627                 if (v2 == j)
3628                 {
3629                        module_names.erase(v);
3630                        break;
3631                 }
3632                 v2++;
3633         }
3634
3635 }
3636
3637 bool UnloadModule(const char* filename)
3638 {
3639         for (int j = 0; j != module_names.size(); j++)
3640         {
3641                 if (module_names[j] == std::string(filename))
3642                 {
3643                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3644                         {
3645                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3646                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3647                                 return false;
3648                         }
3649                         // found the module
3650                         log(DEBUG,"Deleting module...");
3651                         erase_module(j);
3652                         log(DEBUG,"Erasing module entry...");
3653                         erase_factory(j);
3654                         log(DEBUG,"Removing dependent commands...");
3655                         removecommands(filename);
3656                         log(DEFAULT,"Module %s unloaded",filename);
3657                         MODCOUNT--;
3658                         return true;
3659                 }
3660         }
3661         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3662         snprintf(MODERR,MAXBUF,"Module not loaded");
3663         return false;
3664 }
3665
3666 bool DirValid(char* dirandfile)
3667 {
3668         char work[MAXBUF];
3669         strlcpy(work,dirandfile,MAXBUF);
3670         int p = strlen(work);
3671         // we just want the dir
3672         while (strlen(work))
3673         {
3674                 if (work[p] == '/')
3675                 {
3676                         work[p] = '\0';
3677                         break;
3678                 }
3679                 work[p--] = '\0';
3680         }
3681         char buffer[MAXBUF], otherdir[MAXBUF];
3682         // Get the current working directory
3683         if( getcwd( buffer, MAXBUF ) == NULL )
3684                 return false;
3685         chdir(work);
3686         if( getcwd( otherdir, MAXBUF ) == NULL )
3687                 return false;
3688         chdir(buffer);
3689         if (strlen(otherdir) >= strlen(work))
3690         {
3691                 otherdir[strlen(work)] = '\0';
3692                 if (!strcmp(otherdir,work))
3693                 {
3694                         return true;
3695                 }
3696                 return false;
3697         }
3698         else return false;
3699 }
3700
3701 bool LoadModule(const char* filename)
3702 {
3703         char modfile[MAXBUF];
3704         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3705         if (!DirValid(modfile))
3706         {
3707                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3708                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3709                 return false;
3710         }
3711         log(DEBUG,"Loading module: %s",modfile);
3712         if (FileExists(modfile))
3713         {
3714                 for (int j = 0; j < module_names.size(); j++)
3715                 {
3716                         if (module_names[j] == std::string(filename))
3717                         {
3718                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3719                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3720                                 return false;
3721                         }
3722                 }
3723                 ircd_module* a = new ircd_module(modfile);
3724                 factory[MODCOUNT+1] = a;
3725                 if (factory[MODCOUNT+1]->LastError())
3726                 {
3727                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3728                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3729                         MODCOUNT--;
3730                         return false;
3731                 }
3732                 if (factory[MODCOUNT+1]->factory)
3733                 {
3734                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3735                         modules[MODCOUNT+1] = m;
3736                         /* save the module and the module's classfactory, if
3737                          * this isnt done, random crashes can occur :/ */
3738                         module_names.push_back(filename);
3739                 }
3740                 else
3741                 {
3742                         log(DEFAULT,"Unable to load %s",modfile);
3743                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3744                         return false;
3745                 }
3746         }
3747         else
3748         {
3749                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3750                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3751                 return false;
3752         }
3753         MODCOUNT++;
3754         return true;
3755 }
3756
3757 int InspIRCd(void)
3758 {
3759         struct sockaddr_in client,server;
3760         char addrs[MAXBUF][255];
3761         int incomingSockfd, result = TRUE;
3762         socklen_t length;
3763         int count = 0;
3764         int selectResult = 0, selectResult2 = 0;
3765         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3766         fd_set selectFds;
3767         timeval tv;
3768
3769         log_file = fopen("ircd.log","a+");
3770         if (!log_file)
3771         {
3772                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3773                 Exit(ERROR);
3774         }
3775
3776         log(DEFAULT,"$Id$");
3777         if (geteuid() == 0)
3778         {
3779                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3780                 Exit(ERROR);
3781                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3782         }
3783         SetupCommandTable();
3784         log(DEBUG,"InspIRCd: startup: default command table set up");
3785
3786         ReadConfig(true,NULL);
3787         if (DieValue[0])
3788         {
3789                 printf("WARNING: %s\n\n",DieValue);
3790                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3791                 exit(0);
3792         }
3793         log(DEBUG,"InspIRCd: startup: read config");
3794
3795         int clientportcount = 0, serverportcount = 0;
3796
3797         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3798         {
3799                 ConfValue("bind","port",count,configToken,&config_f);
3800                 ConfValue("bind","address",count,Addr,&config_f);
3801                 ConfValue("bind","type",count,Type,&config_f);
3802                 if (!strcmp(Type,"servers"))
3803                 {
3804                         char Default[MAXBUF];
3805                         strcpy(Default,"no");
3806                         ConfValue("bind","default",count,Default,&config_f);
3807                         if (strchr(Default,'y'))
3808                         {
3809                                 defaultRoute = serverportcount;
3810                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3811                         }
3812                         me[serverportcount] = new serverrec(ServerName,100L,false);
3813                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3814                         {
3815                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3816                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3817                         }
3818                         else
3819                         {
3820                                 serverportcount++;
3821                         }
3822                 }
3823                 else
3824                 {
3825                         ports[clientportcount] = atoi(configToken);
3826                         strlcpy(addrs[clientportcount],Addr,256);
3827                         clientportcount++;
3828                 }
3829                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3830         }
3831         portCount = clientportcount;
3832         UDPportCount = serverportcount;
3833
3834         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)UDPportCount);
3835         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3836
3837         printf("\n");
3838
3839         /* BugFix By Craig! :p */
3840         MODCOUNT = -1;
3841         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3842         {
3843                 ConfValue("module","name",count,configToken,&config_f);
3844                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3845                 if (!LoadModule(configToken))
3846                 {
3847                         log(DEFAULT,"Exiting due to a module loader error.");
3848                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3849                         Exit(0);
3850                 }
3851         }
3852         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3853
3854         startup_time = time(NULL);
3855
3856         char PID[MAXBUF];
3857         ConfValue("pid","file",0,PID,&config_f);
3858         // write once here, to try it out and make sure its ok
3859         WritePID(PID);
3860
3861         /* setup select call */
3862         FD_ZERO(&selectFds);
3863         log(DEBUG,"InspIRCd: startup: zero selects");
3864         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
3865
3866         for (count = 0; count < portCount; count++)
3867         {
3868                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3869                 {
3870                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
3871                         return(ERROR);
3872                 }
3873                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3874                 {
3875                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
3876                 }
3877                 else    /* well we at least bound to one socket so we'll continue */
3878                 {
3879                         boundPortCount++;
3880                 }
3881         }
3882
3883         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
3884
3885         /* if we didn't bind to anything then abort */
3886         if (boundPortCount == 0)
3887         {
3888                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3889                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
3890                 return (ERROR);
3891         }
3892
3893
3894         printf("\nInspIRCd is now running!\n");
3895
3896         if (nofork)
3897         {
3898                 log(VERBOSE,"Not forking as -nofork was specified");
3899         }
3900         else
3901         {
3902                 if (DaemonSeed() == ERROR)
3903                 {
3904                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3905                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3906                         Exit(ERROR);
3907                 }
3908         }
3909
3910         WritePID(PID);
3911
3912         length = sizeof (client);
3913         char udp_msg[MAXBUF],tcp_host[MAXBUF];
3914
3915         fd_set serverfds;
3916         timeval tvs;
3917         tvs.tv_usec = 10000L;
3918         tvs.tv_sec = 0;
3919         tv.tv_sec = 0;
3920         tv.tv_usec = 10000L;
3921         char data[65535];
3922         timeval tval;
3923         fd_set sfd;
3924         tval.tv_usec = 10000L;
3925         tval.tv_sec = 0;
3926         int total_in_this_set = 0;
3927         int v = 0;
3928         bool expire_run = false;
3929
3930         /* main loop, this never returns */
3931         for (;;)
3932         {
3933 #ifdef _POSIX_PRIORITY_SCHEDULING
3934                 sched_yield();
3935 #endif
3936                 // poll dns queue
3937                 dns_poll();
3938                 FD_ZERO(&sfd);
3939
3940                 // we only read time() once per iteration rather than tons of times!
3941                 TIME = time(NULL);
3942
3943                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3944                 // them in a list, then reap the list every second or so.
3945                 if (((TIME % 5) == 0) && (!expire_run))
3946                 {
3947                         expire_lines();
3948                         FOREACH_MOD OnBackgroundTimer(TIME);
3949                         expire_run = true;
3950                         continue;
3951                 }
3952                 if ((TIME % 5) == 1)
3953                         expire_run = false;
3954
3955                 // fix by brain - this must be below any manipulation of the hashmap by modules
3956                 user_hash::iterator count2 = clientlist.begin();
3957
3958                 FD_ZERO(&serverfds);
3959
3960                 for (int x = 0; x != UDPportCount; x++)
3961                 {
3962                         if (me[x])
3963                                 FD_SET(me[x]->fd, &serverfds);
3964                 }
3965
3966                 // serverFds timevals went here
3967
3968                 tvs.tv_usec = 30000L;
3969                 tvs.tv_sec = 0;
3970                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3971                 if (servresult > 0)
3972                 {
3973                         for (int x = 0; x != UDPportCount; x++)
3974                         {
3975                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3976                                 {
3977                                         char remotehost[MAXBUF],resolved[MAXBUF];
3978                                         length = sizeof (client);
3979                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3980                                         if (incomingSockfd != -1)
3981                                         {
3982                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3983                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3984                                                 {
3985                                                         strlcpy(resolved,remotehost,MAXBUF);
3986                                                 }
3987                                                 // add to this connections ircd_connector vector
3988                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3989                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3990                                         }
3991                                 }
3992                         }
3993                 }
3994
3995                 for (int x = 0; x < UDPportCount; x++)
3996                 {
3997                         std::deque<std::string> msgs;
3998                         msgs.clear();
3999                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
4000                         {
4001                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
4002                                 {
4003                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
4004                                         log(DEBUG,"Processing: %s",udp_msg);
4005                                         if (!udp_msg[0])
4006                                         {
4007                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
4008                                                 break;
4009                                         }
4010                                         // during a netburst, send all data to all other linked servers
4011                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
4012                                         {
4013                                                 if (is_uline(tcp_host))
4014                                                 {
4015                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
4016                                                         {
4017                                                                 NetSendToAllExcept(tcp_host,udp_msg);
4018                                                         }
4019                                                 }
4020                                                 else
4021                                                         NetSendToAllExcept(tcp_host,udp_msg);
4022                                         }
4023                                         std::string msg = udp_msg;
4024                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
4025                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
4026                                         handle_link_packet(udp_msg, tcp_host, me[x]);
4027                                 }
4028                                 goto label;
4029                         }
4030                 }
4031
4032
4033         while (count2 != clientlist.end())
4034         {
4035                 FD_ZERO(&sfd);
4036                 total_in_this_set = 0;
4037
4038                 user_hash::iterator xcount = count2;
4039                 user_hash::iterator endingiter = count2;
4040
4041                 if (count2 == clientlist.end()) break;
4042
4043                 if (count2->second)
4044                 if (count2->second->fd != 0)
4045                 {
4046                         // assemble up to 64 sockets into an fd_set
4047                         // to implement a pooling mechanism.
4048                         //
4049                         // This should be up to 64x faster than the
4050                         // old implementation.
4051                         while (total_in_this_set < 64)
4052                         {
4053                                 if (count2 != clientlist.end())
4054                                 {
4055                                         // we don't check the state of remote users.
4056                                         if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
4057                                         {
4058                                                 FD_SET (count2->second->fd, &sfd);
4059
4060                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4061                                                 // their connection class.
4062                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
4063                                                 {
4064                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
4065                                                         kill_link(count2->second,"Registration timeout");
4066                                                         goto label;
4067                                                 }
4068                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second)))
4069                                                 {
4070                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
4071                                                         count2->second->dns_done = true;
4072                                                         FullConnectUser(count2->second);
4073                                                         goto label;
4074                                                 }
4075                                                 if ((count2->second->dns_done) && (count2->second->registered == 3) && (AllModulesReportReady(count2->second))) // both NICK and USER... and DNS
4076                                                 {
4077                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4078                                                         FullConnectUser(count2->second);
4079                                                         goto label;
4080                                                 }
4081                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
4082                                                 {
4083                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
4084                                                         {
4085                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
4086                                                                 kill_link(count2->second,"Ping timeout");
4087                                                                 goto label;
4088                                                         }
4089                                                         Write(count2->second->fd,"PING :%s",ServerName);
4090                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
4091                                                         count2->second->lastping = 0;
4092                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
4093                                                 }
4094                                         }
4095                                         count2++;
4096                                         total_in_this_set++;
4097                                 }
4098                                 else break;
4099                         }
4100
4101                         endingiter = count2;
4102                         count2 = xcount; // roll back to where we were
4103
4104                         v = 0;
4105
4106                         // tvals defined here
4107
4108                         tval.tv_usec = 1000L;
4109                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
4110
4111                         // now loop through all of the items in this pool if any are waiting
4112                         //if (selectResult2 > 0)
4113                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4114                         {
4115
4116 #ifdef _POSIX_PRIORITY_SCHEDULING
4117                                 sched_yield();
4118 #endif
4119
4120                                 result = EAGAIN;
4121                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
4122                                 {
4123                                         result = read(count2a->second->fd, data, 65535);
4124                                         if (result)
4125                                         {
4126                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4127                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4128                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4129                                                 for (int checker = 0; checker < result; checker++)
4130                                                 {
4131                                                         if ((data[checker] == 0) || (data[checker] == 7))
4132                                                                 data[checker] = ' ';
4133                                                 }
4134                                                 if (result > 0)
4135                                                         data[result] = '\0';
4136                                                 userrec* current = count2a->second;
4137                                                 int currfd = current->fd;
4138                                                 int floodlines = 0;
4139                                                 // add the data to the users buffer
4140                                                 if (!current->AddBuffer(data))
4141                                                 {
4142                                                         // AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
4143                                                         if (current->registered == 7)
4144                                                         {
4145                                                                 kill_link(current,"RecvQ exceeded");
4146                                                         }
4147                                                         else
4148                                                         {
4149                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4150                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4151                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4152                                                                 apply_lines();
4153                                                         }
4154                                                         goto label;
4155                                                 }
4156                                                 if (current->recvq.length() > NetBufferSize)
4157                                                 {
4158                                                         if (current->registered == 7)
4159                                                         {
4160                                                                 kill_link(current,"RecvQ exceeded");
4161                                                         }
4162                                                         else
4163                                                         {
4164                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4165                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4166                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4167                                                                 apply_lines();
4168                                                         }
4169                                                         goto label;
4170                                                 }
4171                                                 // while there are complete lines to process...
4172                                                 while (current->BufferIsReady())
4173                                                 {
4174                                                         floodlines++;
4175                                                         if (TIME > current->reset_due)
4176                                                         {
4177                                                                 current->reset_due = TIME + current->threshold;
4178                                                                 current->lines_in = 0;
4179                                                         }
4180                                                         current->lines_in++;
4181                                                         if (current->lines_in > current->flood)
4182                                                         {
4183                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4184                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4185                                                                 kill_link(current,"Excess flood");
4186                                                                 goto label;
4187                                                         }
4188                                                         if ((floodlines > current->flood) && (current->flood != 0))
4189                                                         {
4190                                                                 if (current->registered == 7)
4191                                                                 {
4192                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4193                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4194                                                                         kill_link(current,"Excess flood");
4195                                                                 }
4196                                                                 else
4197                                                                 {
4198                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4199                                                                         apply_lines();
4200                                                                 }
4201                                                                 goto label;
4202                                                         }
4203                                                         char sanitized[MAXBUF];
4204                                                         // use GetBuffer to copy single lines into the sanitized string
4205                                                         std::string single_line = current->GetBuffer();
4206                                                         if (single_line.length()>512)
4207                                                         {
4208                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4209                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4210                                                                 kill_link(current,"Excess flood");
4211                                                                 goto label;
4212                                                         }
4213                                                         strlcpy(sanitized,single_line.c_str(),MAXBUF);
4214                                                         if (*sanitized)
4215                                                         {
4216                                                                 // we're gonna re-scan to check if the nick is gone, after every
4217                                                                 // command - if it has, we're gonna bail
4218                                                                 bool find_again = false;
4219                                                                 process_buffer(sanitized,current);
4220                                                                 // look for the user's record in case it's changed
4221                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
4222                                                                 {
4223                                                                         if (c2->second->fd == currfd)
4224                                                                         {
4225                                                                                 // found again, update pointer
4226                                                                                 current == c2->second;
4227                                                                                 find_again = true;
4228                                                                                 break;
4229                                                                         }
4230                                                                 }
4231                                                                 if (!find_again)
4232                                                                         goto label;
4233
4234                                                         }
4235                                                 }
4236                                                 goto label;
4237                                         }
4238
4239                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4240                                         {
4241                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4242                                                 kill_link(count2a->second,strerror(errno));
4243                                                 goto label;
4244                                         }
4245                                 }
4246                                 // result EAGAIN means nothing read
4247                                 if (result == EAGAIN)
4248                                 {
4249                                 }
4250                                 else
4251                                 if (result == 0)
4252                                 {
4253                                         if (count2->second)
4254                                         {
4255                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4256                                                 kill_link(count2a->second,"Client exited");
4257                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4258                                                 log(DEBUG,"Bailing from client exit");
4259                                                 goto label;
4260                                         }
4261                                 }
4262                                 else if (result > 0)
4263                                 {
4264                                 }
4265                         }
4266                 }
4267                 for (int q = 0; q < total_in_this_set; q++)
4268                 {
4269                         count2++;
4270                 }
4271         }
4272
4273 #ifdef _POSIX_PRIORITY_SCHEDULING
4274         sched_yield();
4275 #endif
4276
4277         // set up select call
4278         for (count = 0; count < boundPortCount; count++)
4279         {
4280                 FD_SET (openSockfd[count], &selectFds);
4281         }
4282
4283         tv.tv_usec = 30000L;
4284         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4285
4286         /* select is reporting a waiting socket. Poll them all to find out which */
4287         if (selectResult > 0)
4288         {
4289                 char target[MAXBUF], resolved[MAXBUF];
4290                 for (count = 0; count < boundPortCount; count++)
4291                 {
4292                         if (FD_ISSET (openSockfd[count], &selectFds))
4293                         {
4294                                 length = sizeof (client);
4295                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4296
4297                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4298                                 strlcpy (resolved, target, MAXBUF);
4299
4300                                 if (incomingSockfd < 0)
4301                                 {
4302                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4303                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4304                                 }
4305                                 else
4306                                 {
4307                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4308                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4309                                 }
4310                                 goto label;
4311                         }
4312                 }
4313         }
4314         label:
4315         if (0) {};
4316 #ifdef _POSIX_PRIORITY_SCHEDULING
4317         sched_yield();
4318 #endif
4319 }
4320 /* not reached */
4321 close (incomingSockfd);
4322 }
4323