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 std::vector<int> fd_reap;
 102
 103 extern int MODCOUNT;
 104 int openSockfd[MAXSOCKS];
 105 bool nofork = false;
 106 bool unlimitcore = false;
 107
 108 time_t TIME = time(NULL);
 109
 110 namespace nspace
 111 {
 112 #ifdef GCC34
 113         template<> struct hash<in_addr>
 114 #else
 115         template<> struct nspace::hash<in_addr>
 116 #endif
 117         {
 118                 size_t operator()(const struct in_addr &a) const
 119                 {
 120                         size_t q;
 121                         memcpy(&q,&a,sizeof(size_t));
 122                         return q;
 123                 }
 124         };
 125 #ifdef GCC34
 126         template<> struct hash<string>
 127 #else
 128         template<> struct nspace::hash<string>
 129 #endif
 130         {
 131                 size_t operator()(const string &s) const
 132                 {
 133                         char a[MAXBUF];
 134                         static struct hash<const char *> strhash;
 135                         strlcpy(a,s.c_str(),MAXBUF);
 136                         strlower(a);
 137                         return strhash(a);
 138                 }
 139         };
 140 }
 141
 142
 143 struct StrHashComp
 144 {
 145
 146         bool operator()(const string& s1, const string& s2) const
 147         {
 148                 char a[MAXBUF],b[MAXBUF];
 149                 strlcpy(a,s1.c_str(),MAXBUF);
 150                 strlcpy(b,s2.c_str(),MAXBUF);
 151                 return (strcasecmp(a,b) == 0);
 152         }
 153
 154 };
 155
 156 struct InAddr_HashComp
 157 {
 158
 159         bool operator()(const in_addr &s1, const in_addr &s2) const
 160         {
 161                 size_t q;
 162                 size_t p;
 163
 164                 memcpy(&q,&s1,sizeof(size_t));
 165                 memcpy(&p,&s2,sizeof(size_t));
 166
 167                 return (q == p);
 168         }
 169
 170 };
 171
 172
 173 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 174 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 175 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 176 typedef std::deque<command_t> command_table;
 177
 178 serverrec* me[32];
 179
 180 FILE *log_file;
 181
 182 user_hash clientlist;
 183 chan_hash chanlist;
 184 user_hash whowas;
 185 command_table cmdlist;
 186 file_cache MOTD;
 187 file_cache RULES;
 188 address_cache IP;
 189
 190 ClassVector Classes;
 191
 192 struct linger linger = { 0 };
 193 char MyExecutable[1024];
 194 int boundPortCount = 0;
 195 int portCount = 0, UDPportCount = 0, ports[MAXSOCKS];
 196 int defaultRoute = 0;
 197 char ModPath[MAXBUF];
 198
 199 connection C;
 200
 201 long MyKey = C.GenKey();
 202
 203 /* prototypes */
 204
 205 int has_channel(userrec *u, chanrec *c);
 206 int usercount(chanrec *c);
 207 int usercount_i(chanrec *c);
 208 char* Passwd(userrec *user);
 209 bool IsDenied(userrec *user);
 210 void AddWhoWas(userrec* u);
 211
 212 std::vector<long> auth_cookies;
 213 std::stringstream config_f(stringstream::in | stringstream::out);
 214
 215
 216
 217 long GetRevision()
 218 {
 219         char Revision[] = "$Revision$";
 220         char *s1 = Revision;
 221         char *savept;
 222         char *v1 = strtok_r(s1," ",&savept);
 223         s1 = savept;
 224         char *v2 = strtok_r(s1," ",&savept);
 225         s1 = savept;
 226         return (long)(atof(v2)*10000);
 227 }
 228
 229
 230 std::string getservername()
 231 {
 232         return ServerName;
 233 }
 234
 235 std::string getserverdesc()
 236 {
 237         return ServerDesc;
 238 }
 239
 240 std::string getnetworkname()
 241 {
 242         return Network;
 243 }
 244
 245 std::string getadminname()
 246 {
 247         return AdminName;
 248 }
 249
 250 std::string getadminemail()
 251 {
 252         return AdminEmail;
 253 }
 254
 255 std::string getadminnick()
 256 {
 257         return AdminNick;
 258 }
 259
 260 void log(int level,char *text, ...)
 261 {
 262         char textbuffer[MAXBUF];
 263         va_list argsPtr;
 264         time_t rawtime;
 265         struct tm * timeinfo;
 266         if (level < LogLevel)
 267                 return;
 268
 269         time(&rawtime);
 270         timeinfo = localtime (&rawtime);
 271
 272         if (log_file)
 273         {
 274                 char b[MAXBUF];
 275                 va_start (argsPtr, text);
 276                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 277                 va_end(argsPtr);
 278                 strlcpy(b,asctime(timeinfo),MAXBUF);
 279                 b[strlen(b)-1] = ':';
 280                 fprintf(log_file,"%s %s\n",b,textbuffer);
 281                 if (nofork)
 282                 {
 283                         // nofork enabled? display it on terminal too
 284                         printf("%s %s\n",b,textbuffer);
 285                 }
 286         }
 287 }
 288
 289 void readfile(file_cache &F, const char* fname)
 290 {
 291         FILE* file;
 292         char linebuf[MAXBUF];
 293
 294         log(DEBUG,"readfile: loading %s",fname);
 295         F.clear();
 296         file =  fopen(fname,"r");
 297         if (file)
 298         {
 299                 while (!feof(file))
 300                 {
 301                         fgets(linebuf,sizeof(linebuf),file);
 302                         linebuf[strlen(linebuf)-1]='\0';
 303                         if (!strcmp(linebuf,""))
 304                         {
 305                                 strcpy(linebuf,"  ");
 306                         }
 307                         if (!feof(file))
 308                         {
 309                                 F.push_back(linebuf);
 310                         }
 311                 }
 312                 fclose(file);
 313         }
 314         else
 315         {
 316                 log(DEBUG,"readfile: failed to load file: %s",fname);
 317         }
 318         log(DEBUG,"readfile: loaded %s, %d lines",fname,F.size());
 319 }
 320
 321 void ReadConfig(bool bail, userrec* user)
 322 {
 323         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 324         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF];
 325         ConnectClass c;
 326         std::stringstream errstr;
 327
 328         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 329         {
 330                 errstr.seekg(0);
 331                 if (bail)
 332                 {
 333                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 334                         Exit(0);
 335                 }
 336                 else
 337                 {
 338                         char dataline[1024];
 339                         if (user)
 340                         {
 341                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 342                                 while (!errstr.eof())
 343                                 {
 344                                         errstr.getline(dataline,1024);
 345                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 346                                 }
 347                         }
 348                         else
 349                         {
 350                                 WriteOpers("There were errors in the configuration file:",user->nick);
 351                                 while (!errstr.eof())
 352                                 {
 353                                         errstr.getline(dataline,1024);
 354                                         WriteOpers(dataline);
 355                                 }
 356                         }
 357                         return;
 358                 }
 359         }
 360
 361         ConfValue("server","name",0,ServerName,&config_f);
 362         ConfValue("server","description",0,ServerDesc,&config_f);
 363         ConfValue("server","network",0,Network,&config_f);
 364         ConfValue("admin","name",0,AdminName,&config_f);
 365         ConfValue("admin","email",0,AdminEmail,&config_f);
 366         ConfValue("admin","nick",0,AdminNick,&config_f);
 367         ConfValue("files","motd",0,motd,&config_f);
 368         ConfValue("files","rules",0,rules,&config_f);
 369         ConfValue("power","diepass",0,diepass,&config_f);
 370         ConfValue("power","pause",0,pauseval,&config_f);
 371         ConfValue("power","restartpass",0,restartpass,&config_f);
 372         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 373         ConfValue("die","value",0,DieValue,&config_f);
 374         ConfValue("options","loglevel",0,dbg,&config_f);
 375         ConfValue("options","netbuffersize",0,NB,&config_f);
 376         ConfValue("options","maxwho",0,MW,&config_f);
 377         ConfValue("options","allowhalfop",0,AH,&config_f);
 378         ConfValue("options","allowprotect",0,AP,&config_f);
 379         ConfValue("options","allowfounder",0,AF,&config_f);
 380         ConfValue("dns","server",0,DNSServer,&config_f);
 381         ConfValue("dns","timeout",0,DNT,&config_f);
 382         ConfValue("options","moduledir",0,ModPath,&config_f);
 383         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 384
 385         NetBufferSize = atoi(NB);
 386         MaxWhoResults = atoi(MW);
 387         dns_timeout = atoi(DNT);
 388         if (!dns_timeout)
 389                 dns_timeout = 5;
 390         if (!strcmp(DNSServer,""))
 391                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 392         if (!strcmp(ModPath,""))
 393                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 394         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 395         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 396         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 397         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 398         {
 399                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 400                 NetBufferSize = 10240;
 401         }
 402         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 403         {
 404                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 405                 MaxWhoResults = 128;
 406         }
 407         if (!strcmp(dbg,"debug"))
 408                 LogLevel = DEBUG;
 409         if (!strcmp(dbg,"verbose"))
 410                 LogLevel = VERBOSE;
 411         if (!strcmp(dbg,"default"))
 412                 LogLevel = DEFAULT;
 413         if (!strcmp(dbg,"sparse"))
 414                 LogLevel = SPARSE;
 415         if (!strcmp(dbg,"none"))
 416                 LogLevel = NONE;
 417         readfile(MOTD,motd);
 418         log(DEFAULT,"Reading message of the day...");
 419         readfile(RULES,rules);
 420         log(DEFAULT,"Reading connect classes...");
 421         Classes.clear();
 422         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 423         {
 424                 strcpy(Value,"");
 425                 ConfValue("connect","allow",i,Value,&config_f);
 426                 ConfValue("connect","timeout",i,timeout,&config_f);
 427                 ConfValue("connect","flood",i,flood,&config_f);
 428                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 429                 if (strcmp(Value,""))
 430                 {
 431                         strlcpy(c.host,Value,MAXBUF);
 432                         c.type = CC_ALLOW;
 433                         strlcpy(Value,"",MAXBUF);
 434                         ConfValue("connect","password",i,Value,&config_f);
 435                         strlcpy(c.pass,Value,MAXBUF);
 436                         c.registration_timeout = 90; // default is 2 minutes
 437                         c.pingtime = 120;
 438                         c.flood = atoi(flood);
 439                         if (atoi(timeout)>0)
 440                         {
 441                                 c.registration_timeout = atoi(timeout);
 442                         }
 443                         if (atoi(pfreq)>0)
 444                         {
 445                                 c.pingtime = atoi(pfreq);
 446                         }
 447                         Classes.push_back(c);
 448                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%d flood=%d",c.host,c.pass,c.registration_timeout,c.flood);
 449                 }
 450                 else
 451                 {
 452                         ConfValue("connect","deny",i,Value,&config_f);
 453                         strlcpy(c.host,Value,MAXBUF);
 454                         c.type = CC_DENY;
 455                         Classes.push_back(c);
 456                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 457                 }
 458
 459         }
 460         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 461         read_xline_defaults();
 462         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 463         apply_lines();
 464         log(DEFAULT,"Done reading configuration file, InspIRCd is now running.");
 465         if (!bail)
 466         {
 467                 log(DEFAULT,"Adding and removing modules due to rehash...");
 468
 469                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 470
 471                 // store the old module names
 472                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 473                 {
 474                         old_module_names.push_back(*t);
 475                 }
 476
 477                 // get the new module names
 478                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 479                 {
 480                         ConfValue("module","name",count2,Value,&config_f);
 481                         new_module_names.push_back(Value);
 482                 }
 483
 484                 // now create a list of new modules that are due to be loaded
 485                 // and a seperate list of modules which are due to be unloaded
 486                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 487                 {
 488                         bool added = true;
 489                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 490                         {
 491                                 if (*old == *_new)
 492                                         added = false;
 493                         }
 494                         if (added)
 495                                 added_modules.push_back(*_new);
 496                 }
 497                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 498                 {
 499                         bool removed = true;
 500                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 501                         {
 502                                 if (*newm == *oldm)
 503                                         removed = false;
 504                         }
 505                         if (removed)
 506                                 removed_modules.push_back(*oldm);
 507                 }
 508                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 509                 // to be removed.
 510                 int rem = 0, add = 0;
 511                 if (!removed_modules.empty())
 512                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 513                 {
 514                         if (UnloadModule(removing->c_str()))
 515                         {
 516                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 517                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 518                                 rem++;
 519                         }
 520                         else
 521                         {
 522                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 523                         }
 524                 }
 525                 if (!added_modules.empty())
 526                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 527                 {
 528                         if (LoadModule(adding->c_str()))
 529                         {
 530                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 531                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 532                                 add++;
 533                         }
 534                         else
 535                         {
 536                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 537                         }
 538                 }
 539                 log(DEFAULT,"Successfully unloaded %d of %d modules and loaded %d of %d modules.",rem,removed_modules.size(),add,added_modules.size());
 540         }
 541 }
 542
 543 /* write formatted text to a socket, in same format as printf */
 544
 545 void Write(int sock,char *text, ...)
 546 {
 547         if (sock == FD_MAGIC_NUMBER)
 548                 return;
 549         if (!text)
 550         {
 551                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 552                 return;
 553         }
 554         char textbuffer[MAXBUF];
 555         va_list argsPtr;
 556         char tb[MAXBUF];
 557
 558         va_start (argsPtr, text);
 559         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 560         va_end(argsPtr);
 561         snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 562         chop(tb);
 563         if (sock != -1)
 564         {
 565                 write(sock,tb,strlen(tb));
 566         }
 567 }
 568
 569 /* write a server formatted numeric response to a single socket */
 570
 571 void WriteServ(int sock, char* text, ...)
 572 {
 573         if (sock == FD_MAGIC_NUMBER)
 574                 return;
 575         if (!text)
 576         {
 577                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 578                 return;
 579         }
 580         char textbuffer[MAXBUF],tb[MAXBUF];
 581         va_list argsPtr;
 582         va_start (argsPtr, text);
 583
 584         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 585         va_end(argsPtr);
 586         snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 587         chop(tb);
 588         if (sock != -1)
 589         {
 590                 write(sock,tb,strlen(tb));
 591         }
 592 }
 593
 594 /* write text from an originating user to originating user */
 595
 596 void WriteFrom(int sock, userrec *user,char* text, ...)
 597 {
 598         if (sock == FD_MAGIC_NUMBER)
 599                 return;
 600         if ((!text) || (!user))
 601         {
 602                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 603                 return;
 604         }
 605         char textbuffer[MAXBUF],tb[MAXBUF];
 606         va_list argsPtr;
 607         va_start (argsPtr, text);
 608
 609         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 610         va_end(argsPtr);
 611         snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 612         chop(tb);
 613         if (sock != -1)
 614         {
 615                 write(sock,tb,strlen(tb));
 616         }
 617 }
 618
 619 /* write text to an destination user from a source user (e.g. user privmsg) */
 620
 621 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 622 {
 623         if ((!dest) || (!data))
 624         {
 625                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 626                 return;
 627         }
 628         if (dest->fd == FD_MAGIC_NUMBER)
 629                 return;
 630         char textbuffer[MAXBUF],tb[MAXBUF];
 631         va_list argsPtr;
 632         va_start (argsPtr, data);
 633         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 634         va_end(argsPtr);
 635         chop(tb);
 636
 637         // if no source given send it from the server.
 638         if (!source)
 639         {
 640                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 641         }
 642         else
 643         {
 644                 WriteFrom(dest->fd,source,"%s",textbuffer);
 645         }
 646 }
 647
 648 /* write formatted text from a source user to all users on a channel
 649  * including the sender (NOT for privmsg, notice etc!) */
 650
 651 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 652 {
 653         if ((!Ptr) || (!user) || (!text))
 654         {
 655                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 656                 return;
 657         }
 658         char textbuffer[MAXBUF];
 659         va_list argsPtr;
 660         va_start (argsPtr, text);
 661         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 662         va_end(argsPtr);
 663         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 664         {
 665                 if (has_channel(i->second,Ptr))
 666                 {
 667                         if (i->second->fd != FD_MAGIC_NUMBER)
 668                                 WriteTo(user,i->second,"%s",textbuffer);
 669                 }
 670         }
 671 }
 672
 673 /* write formatted text from a source user to all users on a channel
 674  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 675  * users on remote servers */
 676
 677 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 678 {
 679         if ((!Ptr) || (!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         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 690         {
 691                 if (has_channel(i->second,Ptr))
 692                 {
 693                         if ((i->second->fd != -1) && (i->second->fd != FD_MAGIC_NUMBER))
 694                         {
 695                                 if (!user)
 696                                 {
 697                                         WriteServ(i->second->fd,"%s",textbuffer);
 698                                 }
 699                                 else
 700                                 {
 701                                         WriteTo(user,i->second,"%s",textbuffer);
 702                                 }
 703                         }
 704                 }
 705         }
 706 }
 707
 708
 709 void WriteChannelWithServ(char* ServerName, chanrec* Ptr, userrec* user, char* text, ...)
 710 {
 711         if ((!Ptr) || (!user) || (!text))
 712         {
 713                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 714                 return;
 715         }
 716         char textbuffer[MAXBUF];
 717         va_list argsPtr;
 718         va_start (argsPtr, text);
 719         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 720         va_end(argsPtr);
 721         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 722         {
 723                 if (i->second)
 724                 {
 725                         if ((has_channel(i->second,Ptr)) && (i->second->fd != FD_MAGIC_NUMBER))
 726                         {
 727                                 WriteServ(i->second->fd,"%s",textbuffer);
 728                         }
 729                 }
 730         }
 731 }
 732
 733
 734 /* write formatted text from a source user to all users on a channel except
 735  * for the sender (for privmsg etc) */
 736
 737 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 738 {
 739         if ((!Ptr) || (!user) || (!text))
 740         {
 741                 log(DEFAULT,"*** BUG *** ChanExceptSender 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         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 751         {
 752                 if (i->second)
 753                 {
 754                         if ((has_channel(i->second,Ptr)) && (user != i->second) && (i->second->fd != FD_MAGIC_NUMBER))
 755                         {
 756                                 WriteTo(user,i->second,"%s",textbuffer);
 757                         }
 758                 }
 759         }
 760 }
 761
 762
 763 std::string GetServerDescription(char* servername)
 764 {
 765         for (int j = 0; j < 32; j++)
 766         {
 767                 if (me[j] != NULL)
 768                 {
 769                         for (int k = 0; k < me[j]->connectors.size(); k++)
 770                         {
 771                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 772                                 {
 773                                         return me[j]->connectors[k].GetDescription();
 774                                 }
 775                         }
 776                 }
 777                 return ServerDesc; // not a remote server that can be found, it must be me.
 778         }
 779 }
 780
 781
 782 /* write a formatted string to all users who share at least one common
 783  * channel, including the source user e.g. for use in NICK */
 784
 785 void WriteCommon(userrec *u, char* text, ...)
 786 {
 787         if (!u)
 788         {
 789                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 790                 return;
 791         }
 792
 793         if (u->registered != 7) {
 794                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 795                 return;
 796         }
 797
 798         char textbuffer[MAXBUF];
 799         va_list argsPtr;
 800         va_start (argsPtr, text);
 801         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 802         va_end(argsPtr);
 803
 804         WriteFrom(u->fd,u,"%s",textbuffer);
 805
 806         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 807         {
 808                 if (i->second)
 809                 {
 810                         if ((common_channels(u,i->second) && (i->second != u)) && (i->second->fd != FD_MAGIC_NUMBER))
 811                         {
 812                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 813                         }
 814                 }
 815         }
 816 }
 817
 818 /* write a formatted string to all users who share at least one common
 819  * channel, NOT including the source user e.g. for use in QUIT */
 820
 821 void WriteCommonExcept(userrec *u, char* text, ...)
 822 {
 823         if (!u)
 824         {
 825                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 826                 return;
 827         }
 828
 829         if (u->registered != 7) {
 830                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 831                 return;
 832         }
 833
 834         char textbuffer[MAXBUF];
 835         va_list argsPtr;
 836         va_start (argsPtr, text);
 837         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 838         va_end(argsPtr);
 839
 840         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 841         {
 842                 if (i->second)
 843                 {
 844                         if ((common_channels(u,i->second)) && (u != i->second))
 845                         {
 846                                 WriteFrom(i->second->fd,u,"%s",textbuffer);
 847                         }
 848                 }
 849         }
 850 }
 851
 852 void WriteOpers(char* text, ...)
 853 {
 854         if (!text)
 855         {
 856                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 857                 return;
 858         }
 859
 860         char textbuffer[MAXBUF];
 861         va_list argsPtr;
 862         va_start (argsPtr, text);
 863         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 864         va_end(argsPtr);
 865
 866         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 867         {
 868                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
 869                 {
 870                         if (strchr(i->second->modes,'o'))
 871                         {
 872                                 if (strchr(i->second->modes,'s'))
 873                                 {
 874                                         // send server notices to all with +s
 875                                         // (TODO: needs SNOMASKs)
 876                                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 877                                 }
 878                         }
 879                 }
 880         }
 881 }
 882
 883 // returns TRUE of any users on channel C occupy server 'servername'.
 884
 885 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 886 {
 887         log(DEBUG,"ChanAnyOnThisServer");
 888         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 889         {
 890                 if (has_channel(i->second,c))
 891                 {
 892                         if (!strcasecmp(i->second->server,servername))
 893                         {
 894                                 return true;
 895                         }
 896                 }
 897         }
 898         return false;
 899 }
 900
 901 // returns true if user 'u' shares any common channels with any users on server 'servername'
 902
 903 bool CommonOnThisServer(userrec* u,const char* servername)
 904 {
 905         log(DEBUG,"ChanAnyOnThisServer");
 906         for (user_hash::iterator i = clientlist.begin(); i != clientlist.end(); i++)
 907         {
 908                 if ((common_channels(u,i->second)) && (u != i->second))
 909                 {
 910                         if (!strcasecmp(i->second->server,servername))
 911                         {
 912                                 log(DEBUG,"%s is common to %s sharing with %s",i->second->nick,servername,u->nick);
 913                                 return true;
 914                         }
 915                 }
 916         }
 917         return false;
 918 }
 919
 920
 921 void NetSendToCommon(userrec* u, char* s)
 922 {
 923         char buffer[MAXBUF];
 924         snprintf(buffer,MAXBUF,"%s",s);
 925
 926         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
 927
 928         std::string msg = buffer;
 929         FOREACH_MOD OnPacketTransmit(msg,s);
 930         strlcpy(buffer,msg.c_str(),MAXBUF);
 931
 932         for (int j = 0; j < 32; j++)
 933         {
 934                 if (me[j] != NULL)
 935                 {
 936                         for (int k = 0; k < me[j]->connectors.size(); k++)
 937                         {
 938                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
 939                                 {
 940                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 941                                 }
 942                         }
 943                 }
 944         }
 945 }
 946
 947
 948 void NetSendToAll(char* s)
 949 {
 950         char buffer[MAXBUF];
 951         snprintf(buffer,MAXBUF,"%s",s);
 952
 953         log(DEBUG,"NetSendToAll: '%s'",s);
 954
 955         std::string msg = buffer;
 956         FOREACH_MOD OnPacketTransmit(msg,s);
 957         strlcpy(buffer,msg.c_str(),MAXBUF);
 958
 959         for (int j = 0; j < 32; j++)
 960         {
 961                 if (me[j] != NULL)
 962                 {
 963                         for (int k = 0; k < me[j]->connectors.size(); k++)
 964                         {
 965                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 966                         }
 967                 }
 968         }
 969 }
 970
 971 void NetSendToAllAlive(char* s)
 972 {
 973         char buffer[MAXBUF];
 974         snprintf(buffer,MAXBUF,"%s",s);
 975
 976         log(DEBUG,"NetSendToAllAlive: '%s'",s);
 977
 978         std::string msg = buffer;
 979         FOREACH_MOD OnPacketTransmit(msg,s);
 980         strlcpy(buffer,msg.c_str(),MAXBUF);
 981
 982         for (int j = 0; j < 32; j++)
 983         {
 984                 if (me[j] != NULL)
 985                 {
 986                         for (int k = 0; k < me[j]->connectors.size(); k++)
 987                         {
 988                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
 989                                 {
 990                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
 991                                 }
 992                                 else
 993                                 {
 994                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
 995                                 }
 996                         }
 997                 }
 998         }
 999 }
1000
1001
1002 void NetSendToOne(char* target,char* s)
1003 {
1004         char buffer[MAXBUF];
1005         snprintf(buffer,MAXBUF,"%s",s);
1006
1007         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1008
1009         std::string msg = buffer;
1010         FOREACH_MOD OnPacketTransmit(msg,s);
1011         strlcpy(buffer,msg.c_str(),MAXBUF);
1012
1013         for (int j = 0; j < 32; j++)
1014         {
1015                 if (me[j] != NULL)
1016                 {
1017                         for (int k = 0; k < me[j]->connectors.size(); k++)
1018                         {
1019                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1020                                 {
1021                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1022                                 }
1023                         }
1024                 }
1025         }
1026 }
1027
1028 void NetSendToAllExcept(const char* target,char* s)
1029 {
1030         char buffer[MAXBUF];
1031         snprintf(buffer,MAXBUF,"%s",s);
1032
1033         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1034
1035         std::string msg = buffer;
1036         FOREACH_MOD OnPacketTransmit(msg,s);
1037         strlcpy(buffer,msg.c_str(),MAXBUF);
1038
1039         for (int j = 0; j < 32; j++)
1040         {
1041                 if (me[j] != NULL)
1042                 {
1043                         for (int k = 0; k < me[j]->connectors.size(); k++)
1044                         {
1045                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1046                                 {
1047                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1048                                 }
1049                         }
1050                 }
1051         }
1052 }
1053
1054
1055 void WriteMode(const char* modes, int flags, const char* text, ...)
1056 {
1057         if ((!text) || (!modes) || (!flags))
1058         {
1059                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1060                 return;
1061         }
1062
1063         char textbuffer[MAXBUF];
1064         va_list argsPtr;
1065         va_start (argsPtr, text);
1066         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1067         va_end(argsPtr);
1068
1069         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1070         {
1071                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1072                 {
1073                         bool send_to_user = false;
1074
1075                         if (flags == WM_AND)
1076                         {
1077                                 send_to_user = true;
1078                                 for (int n = 0; n < strlen(modes); n++)
1079                                 {
1080                                         if (!hasumode(i->second,modes[n]))
1081                                         {
1082                                                 send_to_user = false;
1083                                                 break;
1084                                         }
1085                                 }
1086                         }
1087                         else if (flags == WM_OR)
1088                         {
1089                                 send_to_user = false;
1090                                 for (int n = 0; n < strlen(modes); n++)
1091                                 {
1092                                         if (hasumode(i->second,modes[n]))
1093                                         {
1094                                                 send_to_user = true;
1095                                                 break;
1096                                         }
1097                                 }
1098                         }
1099
1100                         if (send_to_user)
1101                         {
1102                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1103                         }
1104                 }
1105         }
1106 }
1107
1108
1109 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1110 {
1111         if ((!text) || (!source))
1112         {
1113                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1114                 return;
1115         }
1116
1117         int i = 0;
1118         char textbuffer[MAXBUF];
1119         va_list argsPtr;
1120         va_start (argsPtr, text);
1121         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1122         va_end(argsPtr);
1123
1124         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1125         {
1126                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1127                 {
1128                         if (strchr(i->second->modes,'w'))
1129                         {
1130                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1131                         }
1132                 }
1133         }
1134
1135         if (!local_only)
1136         {
1137                 char buffer[MAXBUF];
1138                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1139                 NetSendToAll(buffer);
1140         }
1141 }
1142
1143 /* convert a string to lowercase. Note following special circumstances
1144  * taken from RFC 1459. Many "official" server branches still hold to this
1145  * rule so i will too;
1146  *
1147  *  Because of IRC's scandanavian origin, the characters {}| are
1148  *  considered to be the lower case equivalents of the characters []\,
1149  *  respectively. This is a critical issue when determining the
1150  *  equivalence of two nicknames.
1151  */
1152
1153 void strlower(char *n)
1154 {
1155         if (!n)
1156         {
1157                 return;
1158         }
1159         for (int i = 0; i != strlen(n); i++)
1160         {
1161                 n[i] = tolower(n[i]);
1162                 if (n[i] == '[')
1163                         n[i] = '{';
1164                 if (n[i] == ']')
1165                         n[i] = '}';
1166                 if (n[i] == '\\')
1167                         n[i] = '|';
1168         }
1169 }
1170
1171
1172
1173 /* Find a user record by nickname and return a pointer to it */
1174
1175 userrec* Find(std::string nick)
1176 {
1177         user_hash::iterator iter = clientlist.find(nick);
1178
1179         if (iter == clientlist.end())
1180                 /* Couldn't find it */
1181                 return NULL;
1182
1183         return iter->second;
1184 }
1185
1186 /* find a channel record by channel name and return a pointer to it */
1187
1188 chanrec* FindChan(const char* chan)
1189 {
1190         if (!chan)
1191         {
1192                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1193                 return NULL;
1194         }
1195
1196         chan_hash::iterator iter = chanlist.find(chan);
1197
1198         if (iter == chanlist.end())
1199                 /* Couldn't find it */
1200                 return NULL;
1201
1202         return iter->second;
1203 }
1204
1205
1206 long GetMaxBans(char* name)
1207 {
1208         char CM[MAXBUF];
1209         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1210         {
1211                 ConfValue("banlist","chan",count,CM,&config_f);
1212                 if (match(name,CM))
1213                 {
1214                         ConfValue("banlist","limit",count,CM,&config_f);
1215                         return atoi(CM);
1216                 }
1217         }
1218         return 64;
1219 }
1220
1221
1222 void purge_empty_chans(void)
1223 {
1224         int go_again = 1, purge = 0;
1225
1226         while (go_again)
1227         {
1228                 go_again = 0;
1229                 for (chan_hash::iterator i = chanlist.begin(); i != chanlist.end(); i++)
1230                 {
1231                         if (i->second) {
1232                                 if (!usercount(i->second))
1233                                 {
1234                                         /* kill the record */
1235                                         if (i != chanlist.end())
1236                                         {
1237                                                 log(DEBUG,"del_channel: destroyed: %s",i->second->name);
1238                                                 if (i->second)
1239                                                         delete i->second;
1240                                                 chanlist.erase(i);
1241                                                 go_again = 1;
1242                                                 purge++;
1243                                                 break;
1244                                         }
1245                                 }
1246                                 else
1247                                 {
1248                                         log(DEBUG,"skipped purge for %s",i->second->name);
1249                                 }
1250                         }
1251                 }
1252         }
1253         log(DEBUG,"completed channel purge, killed %d",purge);
1254 }
1255
1256
1257 char scratch[MAXBUF];
1258 char sparam[MAXBUF];
1259
1260 char* chanmodes(chanrec *chan)
1261 {
1262         if (!chan)
1263         {
1264                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1265                 strcpy(scratch,"");
1266                 return scratch;
1267         }
1268
1269         strcpy(scratch,"");
1270         strcpy(sparam,"");
1271         if (chan->noexternal)
1272         {
1273                 strlcat(scratch,"n",MAXMODES);
1274         }
1275         if (chan->topiclock)
1276         {
1277                 strlcat(scratch,"t",MAXMODES);
1278         }
1279         if (strcmp(chan->key,""))
1280         {
1281                 strlcat(scratch,"k",MAXMODES);
1282         }
1283         if (chan->limit)
1284         {
1285                 strlcat(scratch,"l",MAXMODES);
1286         }
1287         if (chan->inviteonly)
1288         {
1289                 strlcat(scratch,"i",MAXMODES);
1290         }
1291         if (chan->moderated)
1292         {
1293                 strlcat(scratch,"m",MAXMODES);
1294         }
1295         if (chan->secret)
1296         {
1297                 strlcat(scratch,"s",MAXMODES);
1298         }
1299         if (chan->c_private)
1300         {
1301                 strlcat(scratch,"p",MAXMODES);
1302         }
1303         if (strcmp(chan->key,""))
1304         {
1305                 strlcat(sparam," ",MAXBUF);
1306                 strlcat(sparam,chan->key,MAXBUF);
1307         }
1308         if (chan->limit)
1309         {
1310                 char foo[24];
1311                 sprintf(foo," %d",chan->limit);
1312                 strlcat(sparam,foo,MAXBUF);
1313         }
1314         if (strlen(chan->custom_modes))
1315         {
1316                 strlcat(scratch,chan->custom_modes,MAXMODES);
1317                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1318                 {
1319                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1320                         if (extparam != "")
1321                         {
1322                                 strlcat(sparam," ",MAXBUF);
1323                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1324                         }
1325                 }
1326         }
1327         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1328         strlcat(scratch,sparam,MAXMODES);
1329         return scratch;
1330 }
1331
1332
1333 /* compile a userlist of a channel into a string, each nick seperated by
1334  * spaces and op, voice etc status shown as @ and + */
1335
1336 void userlist(userrec *user,chanrec *c)
1337 {
1338         if ((!c) || (!user))
1339         {
1340                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1341                 return;
1342         }
1343
1344         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1345         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1346         {
1347                 if (has_channel(i->second,c))
1348                 {
1349                         if (isnick(i->second->nick))
1350                         {
1351                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1352                                 {
1353                                         /* user is +i, and source not on the channel, does not show
1354                                          * nick in NAMES list */
1355                                         continue;
1356                                 }
1357                                 strlcat(list,cmode(i->second,c),MAXBUF);
1358                                 strlcat(list,i->second->nick,MAXBUF);
1359                                 strlcat(list," ",MAXBUF);
1360                                 if (strlen(list)>(480-NICKMAX))
1361                                 {
1362                                         /* list overflowed into
1363                                          * multiple numerics */
1364                                         WriteServ(user->fd,"%s",list);
1365                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1366                                 }
1367                         }
1368                 }
1369         }
1370         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1371         {
1372                 WriteServ(user->fd,"%s",list);
1373         }
1374 }
1375
1376 /* return a count of the users on a specific channel accounting for
1377  * invisible users who won't increase the count. e.g. for /LIST */
1378
1379 int usercount_i(chanrec *c)
1380 {
1381         int i = 0;
1382         int count = 0;
1383
1384         if (!c)
1385         {
1386                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1387                 return 0;
1388         }
1389
1390         strcpy(list,"");
1391         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1392         {
1393                 if (i->second)
1394                 {
1395                         if (has_channel(i->second,c))
1396                         {
1397                                 if (isnick(i->second->nick))
1398                                 {
1399                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1400                                         {
1401                                                 /* user is +i, and source not on the channel, does not show
1402                                                  * nick in NAMES list */
1403                                                 continue;
1404                                         }
1405                                         count++;
1406                                 }
1407                         }
1408                 }
1409         }
1410         log(DEBUG,"usercount_i: %s %d",c->name,count);
1411         return count;
1412 }
1413
1414
1415 int usercount(chanrec *c)
1416 {
1417         int i = 0;
1418         int count = 0;
1419
1420         if (!c)
1421         {
1422                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1423                 return 0;
1424         }
1425
1426         strcpy(list,"");
1427         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1428         {
1429                 if (i->second)
1430                 {
1431                         if (has_channel(i->second,c))
1432                         {
1433                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1434                                 {
1435                                         count++;
1436                                 }
1437                         }
1438                 }
1439         }
1440         log(DEBUG,"usercount: %s %d",c->name,count);
1441         return count;
1442 }
1443
1444
1445 /* add a channel to a user, creating the record for it if needed and linking
1446  * it to the user record */
1447
1448 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1449 {
1450         if ((!user) || (!cn))
1451         {
1452                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1453                 return 0;
1454         }
1455
1456         int i = 0;
1457         chanrec* Ptr;
1458         int created = 0;
1459         char cname[MAXBUF];
1460
1461         strncpy(cname,cn,MAXBUF);
1462
1463         // we MUST declare this wherever we use FOREACH_RESULT
1464         int MOD_RESULT = 0;
1465
1466         if (strlen(cname) > CHANMAX-1)
1467         {
1468                 cname[CHANMAX-1] = '\0';
1469         }
1470
1471         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1472
1473         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1474         {
1475                 return NULL; // already on the channel!
1476         }
1477
1478
1479         if (!FindChan(cname))
1480         {
1481                 int MOD_RESULT = 0;
1482                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1483                 if (MOD_RESULT == 1) {
1484                         return NULL;
1485                 }
1486
1487                 /* create a new one */
1488                 log(DEBUG,"add_channel: creating: %s",cname);
1489                 {
1490                         chanlist[cname] = new chanrec();
1491
1492                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1493                         chanlist[cname]->topiclock = 1;
1494                         chanlist[cname]->noexternal = 1;
1495                         chanlist[cname]->created = TIME;
1496                         strcpy(chanlist[cname]->topic, "");
1497                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1498                         chanlist[cname]->topicset = 0;
1499                         Ptr = chanlist[cname];
1500                         log(DEBUG,"add_channel: created: %s",cname);
1501                         /* set created to 2 to indicate user
1502                          * is the first in the channel
1503                          * and should be given ops */
1504                         created = 2;
1505                 }
1506         }
1507         else
1508         {
1509                 /* channel exists, just fish out a pointer to its struct */
1510                 Ptr = FindChan(cname);
1511                 if (Ptr)
1512                 {
1513                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1514
1515                         // the override flag allows us to bypass channel modes
1516                         // and bans (used by servers)
1517                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1518                         {
1519                                 log(DEBUG,"Not overriding...");
1520                                 int MOD_RESULT = 0;
1521                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1522                                 if (MOD_RESULT == 1) {
1523                                         return NULL;
1524                                 }
1525                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1526
1527                                 if (!MOD_RESULT)
1528                                 {
1529                                         log(DEBUG,"add_channel: checking key, invite, etc");
1530                                         if (strcmp(Ptr->key,""))
1531                                         {
1532                                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1533                                                 if (!key)
1534                                                 {
1535                                                         log(DEBUG,"add_channel: no key given in JOIN");
1536                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1537                                                         return NULL;
1538                                                 }
1539                                                 else
1540                                                 {
1541                                                         log(DEBUG,"key at %p is %s",key,key);
1542                                                         if (strcasecmp(key,Ptr->key))
1543                                                         {
1544                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1545                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1546                                                                 return NULL;
1547                                                         }
1548                                                 }
1549                                         }
1550                                         log(DEBUG,"add_channel: no key");
1551
1552                                         if (Ptr->inviteonly)
1553                                         {
1554                                                 log(DEBUG,"add_channel: channel is +i");
1555                                                 if (user->IsInvited(Ptr->name))
1556                                                 {
1557                                                         /* user was invited to channel */
1558                                                         /* there may be an optional channel NOTICE here */
1559                                                 }
1560                                                 else
1561                                                 {
1562                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1563                                                         return NULL;
1564                                                 }
1565                                         }
1566                                         log(DEBUG,"add_channel: channel is not +i");
1567
1568                                         if (Ptr->limit)
1569                                         {
1570                                                 if (usercount(Ptr) == Ptr->limit)
1571                                                 {
1572                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1573                                                         return NULL;
1574                                                 }
1575                                         }
1576
1577                                         log(DEBUG,"add_channel: about to walk banlist");
1578
1579                                         /* check user against the channel banlist */
1580                                         if (Ptr)
1581                                         {
1582                                                 if (Ptr->bans.size())
1583                                                 {
1584                                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1585                                                         {
1586                                                                 if (match(user->GetFullHost(),i->data))
1587                                                                 {
1588                                                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1589                                                                         return NULL;
1590                                                                 }
1591                                                         }
1592                                                 }
1593                                         }
1594
1595                                         log(DEBUG,"add_channel: bans checked");
1596
1597                                 }
1598
1599
1600                                 if ((Ptr) && (user))
1601                                 {
1602                                         user->RemoveInvite(Ptr->name);
1603                                 }
1604
1605                                 log(DEBUG,"add_channel: invites removed");
1606
1607                         }
1608                         else
1609                         {
1610                                 log(DEBUG,"Overridden checks");
1611                         }
1612
1613
1614                 }
1615                 created = 1;
1616         }
1617
1618         log(DEBUG,"Passed channel checks");
1619
1620         for (int i =0; i != MAXCHANS; i++)
1621         {
1622                 log(DEBUG,"Check location %d",i);
1623                 if (user->chans[i].channel == NULL)
1624                 {
1625                         log(DEBUG,"Adding into their channel list at location %d",i);
1626
1627                         if (created == 2)
1628                         {
1629                                 /* first user in is given ops */
1630                                 user->chans[i].uc_modes = UCMODE_OP;
1631                         }
1632                         else
1633                         {
1634                                 user->chans[i].uc_modes = 0;
1635                         }
1636                         user->chans[i].channel = Ptr;
1637                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1638
1639                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1640                         {
1641                                 // use the stamdard J token with no privilages.
1642                                 char buffer[MAXBUF];
1643                                 if (created == 2)
1644                                 {
1645                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1646                                 }
1647                                 else
1648                                 {
1649                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1650                                 }
1651                                 NetSendToAll(buffer);
1652                         }
1653
1654                         log(DEBUG,"Sent JOIN to client");
1655
1656                         if (Ptr->topicset)
1657                         {
1658                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1659                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1660                         }
1661                         userlist(user,Ptr);
1662                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1663                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1664                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1665                         FOREACH_MOD OnUserJoin(user,Ptr);
1666                         return Ptr;
1667                 }
1668         }
1669         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1670         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1671         return NULL;
1672 }
1673
1674 /* remove a channel from a users record, and remove the record from memory
1675  * if the channel has become empty */
1676
1677 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1678 {
1679         if ((!user) || (!cname))
1680         {
1681                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1682                 return NULL;
1683         }
1684
1685         chanrec* Ptr;
1686         int created = 0;
1687
1688         if ((!cname) || (!user))
1689         {
1690                 return NULL;
1691         }
1692
1693         Ptr = FindChan(cname);
1694
1695         if (!Ptr)
1696         {
1697                 return NULL;
1698         }
1699
1700         FOREACH_MOD OnUserPart(user,Ptr);
1701         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1702
1703         for (int i =0; i != MAXCHANS; i++)
1704         {
1705                 /* zap it from the channel list of the user */
1706                 if (user->chans[i].channel == Ptr)
1707                 {
1708                         if (reason)
1709                         {
1710                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1711
1712                                 if (!local)
1713                                 {
1714                                         char buffer[MAXBUF];
1715                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1716                                         NetSendToAll(buffer);
1717                                 }
1718
1719
1720                         }
1721                         else
1722                         {
1723                                 if (!local)
1724                                 {
1725                                         char buffer[MAXBUF];
1726                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1727                                         NetSendToAll(buffer);
1728                                 }
1729
1730                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1731                         }
1732                         user->chans[i].uc_modes = 0;
1733                         user->chans[i].channel = NULL;
1734                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1735                         break;
1736                 }
1737         }
1738
1739         /* if there are no users left on the channel */
1740         if (!usercount(Ptr))
1741         {
1742                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1743
1744                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1745
1746                 /* kill the record */
1747                 if (iter != chanlist.end())
1748                 {
1749                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1750                         if (iter->second) delete iter->second;
1751                         chanlist.erase(iter);
1752                 }
1753         }
1754 }
1755
1756
1757 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1758 {
1759         if ((!src) || (!user) || (!Ptr) || (!reason))
1760         {
1761                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1762                 return;
1763         }
1764
1765         int i = 0;
1766         int created = 0;
1767
1768         if ((!Ptr) || (!user) || (!src))
1769         {
1770                 return;
1771         }
1772
1773         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1774
1775         if (!has_channel(user,Ptr))
1776         {
1777                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1778                 return;
1779         }
1780
1781         int MOD_RESULT = 0;
1782         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1783
1784         if (MOD_RESULT == ACR_DENY)
1785                 return;
1786
1787         if (MOD_RESULT == ACR_DEFAULT)
1788         {
1789                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1790                 {
1791                         if (cstatus(src,Ptr) == STATUS_HOP)
1792                         {
1793                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1794                         }
1795                         else
1796                         {
1797                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1798                         }
1799
1800                         return;
1801                 }
1802         }
1803
1804         for (int i =0; i != MAXCHANS; i++)
1805         {
1806                 /* zap it from the channel list of the user */
1807                 if (user->chans[i].channel)
1808                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1809                 {
1810                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1811                         user->chans[i].uc_modes = 0;
1812                         user->chans[i].channel = NULL;
1813                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1814                         break;
1815                 }
1816         }
1817
1818         /* if there are no users left on the channel */
1819         if (!usercount(Ptr))
1820         {
1821                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1822
1823                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1824
1825                 /* kill the record */
1826                 if (iter != chanlist.end())
1827                 {
1828                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1829                         if (iter->second) delete iter->second;
1830                         chanlist.erase(iter);
1831                 }
1832         }
1833 }
1834
1835
1836
1837
1838 /* This function pokes and hacks at a parameter list like the following:
1839  *
1840  * PART #winbot,#darkgalaxy :m00!
1841  *
1842  * to turn it into a series of individual calls like this:
1843  *
1844  * PART #winbot :m00!
1845  * PART #darkgalaxy :m00!
1846  *
1847  * The seperate calls are sent to a callback function provided by the caller
1848  * (the caller will usually call itself recursively). The callback function
1849  * must be a command handler. Calling this function on a line with no list causes
1850  * no action to be taken. You must provide a starting and ending parameter number
1851  * where the range of the list can be found, useful if you have a terminating
1852  * parameter as above which is actually not part of the list, or parameters
1853  * before the actual list as well. This code is used by many functions which
1854  * can function as "one to list" (see the RFC) */
1855
1856 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1857 {
1858         char plist[MAXBUF];
1859         char *param;
1860         char *pars[32];
1861         char blog[32][MAXBUF];
1862         char blog2[32][MAXBUF];
1863         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1864         char keystr[MAXBUF];
1865         char moo[MAXBUF];
1866
1867         for (int i = 0; i <32; i++)
1868                 strcpy(blog[i],"");
1869
1870         for (int i = 0; i <32; i++)
1871                 strcpy(blog2[i],"");
1872
1873         strcpy(moo,"");
1874         for (int i = 0; i <10; i++)
1875         {
1876                 if (!parameters[i])
1877                 {
1878                         parameters[i] = moo;
1879                 }
1880         }
1881         if (joins)
1882         {
1883                 if (pcnt > 1) /* we have a key to copy */
1884                 {
1885                         strlcpy(keystr,parameters[1],MAXBUF);
1886                 }
1887         }
1888
1889         if (!parameters[start])
1890         {
1891                 return 0;
1892         }
1893         if (!strchr(parameters[start],','))
1894         {
1895                 return 0;
1896         }
1897         strcpy(plist,"");
1898         for (int i = start; i <= end; i++)
1899         {
1900                 if (parameters[i])
1901                 {
1902                         strlcat(plist,parameters[i],MAXBUF);
1903                 }
1904         }
1905
1906         j = 0;
1907         param = plist;
1908
1909         t = strlen(plist);
1910         for (int i = 0; i < t; i++)
1911         {
1912                 if (plist[i] == ',')
1913                 {
1914                         plist[i] = '\0';
1915                         strlcpy(blog[j++],param,MAXBUF);
1916                         param = plist+i+1;
1917                         if (j>20)
1918                         {
1919                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1920                                 return 1;
1921                         }
1922                 }
1923         }
1924         strlcpy(blog[j++],param,MAXBUF);
1925         total = j;
1926
1927         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1928         {
1929                 strcat(keystr,",");
1930         }
1931
1932         if ((joins) && (keystr))
1933         {
1934                 if (strchr(keystr,','))
1935                 {
1936                         j = 0;
1937                         param = keystr;
1938                         t2 = strlen(keystr);
1939                         for (int i = 0; i < t2; i++)
1940                         {
1941                                 if (keystr[i] == ',')
1942                                 {
1943                                         keystr[i] = '\0';
1944                                         strlcpy(blog2[j++],param,MAXBUF);
1945                                         param = keystr+i+1;
1946                                 }
1947                         }
1948                         strlcpy(blog2[j++],param,MAXBUF);
1949                         total2 = j;
1950                 }
1951         }
1952
1953         for (j = 0; j < total; j++)
1954         {
1955                 if (blog[j])
1956                 {
1957                         pars[0] = blog[j];
1958                 }
1959                 for (q = end; q < pcnt-1; q++)
1960                 {
1961                         if (parameters[q+1])
1962                         {
1963                                 pars[q-end+1] = parameters[q+1];
1964                         }
1965                 }
1966                 if ((joins) && (parameters[1]))
1967                 {
1968                         if (pcnt > 1)
1969                         {
1970                                 pars[1] = blog2[j];
1971                         }
1972                         else
1973                         {
1974                                 pars[1] = NULL;
1975                         }
1976                 }
1977                 /* repeatedly call the function with the hacked parameter list */
1978                 if ((joins) && (pcnt > 1))
1979                 {
1980                         if (pars[1])
1981                         {
1982                                 // pars[1] already set up and containing key from blog2[j]
1983                                 fn(pars,2,u);
1984                         }
1985                         else
1986                         {
1987                                 pars[1] = parameters[1];
1988                                 fn(pars,2,u);
1989                         }
1990                 }
1991                 else
1992                 {
1993                         fn(pars,pcnt-(end-start),u);
1994                 }
1995         }
1996
1997         return 1;
1998 }
1999
2000
2001
2002 void kill_link(userrec *user,const char* r)
2003 {
2004         user_hash::iterator iter = clientlist.find(user->nick);
2005
2006         char reason[MAXBUF];
2007
2008         strncpy(reason,r,MAXBUF);
2009
2010         if (strlen(reason)>MAXQUIT)
2011         {
2012                 reason[MAXQUIT-1] = '\0';
2013         }
2014
2015         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2016         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2017         log(DEBUG,"closing fd %d",user->fd);
2018
2019         /* bugfix, cant close() a nonblocking socket (sux!) */
2020         if (user->registered == 7) {
2021                 FOREACH_MOD OnUserQuit(user);
2022                 WriteCommonExcept(user,"QUIT :%s",reason);
2023
2024                 // Q token must go to ALL servers!!!
2025                 char buffer[MAXBUF];
2026                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2027                 NetSendToAll(buffer);
2028         }
2029
2030         /* push the socket on a stack of sockets due to be closed at the next opportunity
2031          * 'Client exited' is an exception to this as it means the client side has already
2032          * closed the socket, we don't need to do it.
2033          */
2034         fd_reap.push_back(user->fd);
2035
2036         bool do_purge = false;
2037
2038         if (user->registered == 7) {
2039                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2040                 AddWhoWas(user);
2041         }
2042
2043         if (iter != clientlist.end())
2044         {
2045                 log(DEBUG,"deleting user hash value %d",iter->second);
2046                 if ((iter->second) && (user->registered == 7)) {
2047                         if (iter->second) delete iter->second;
2048                 }
2049                 clientlist.erase(iter);
2050         }
2051
2052         if (user->registered == 7) {
2053                 purge_empty_chans();
2054         }
2055         //user = NULL;
2056 }
2057
2058 void kill_link_silent(userrec *user,const char* r)
2059 {
2060         user_hash::iterator iter = clientlist.find(user->nick);
2061
2062         char reason[MAXBUF];
2063
2064         strncpy(reason,r,MAXBUF);
2065
2066         if (strlen(reason)>MAXQUIT)
2067         {
2068                 reason[MAXQUIT-1] = '\0';
2069         }
2070
2071         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2072         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2073         log(DEBUG,"closing fd %d",user->fd);
2074
2075         /* bugfix, cant close() a nonblocking socket (sux!) */
2076         if (user->registered == 7) {
2077                 FOREACH_MOD OnUserQuit(user);
2078                 WriteCommonExcept(user,"QUIT :%s",reason);
2079
2080                 // Q token must go to ALL servers!!!
2081                 char buffer[MAXBUF];
2082                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2083                 NetSendToAll(buffer);
2084         }
2085
2086         /* push the socket on a stack of sockets due to be closed at the next opportunity
2087          * 'Client exited' is an exception to this as it means the client side has already
2088          * closed the socket, we don't need to do it.
2089          */
2090         fd_reap.push_back(user->fd);
2091
2092         bool do_purge = false;
2093
2094         if (iter != clientlist.end())
2095         {
2096                 log(DEBUG,"deleting user hash value %d",iter->second);
2097                 if ((iter->second) && (user->registered == 7)) {
2098                         if (iter->second) delete iter->second;
2099                 }
2100                 clientlist.erase(iter);
2101         }
2102
2103         if (user->registered == 7) {
2104                 purge_empty_chans();
2105         }
2106 }
2107
2108
2109
2110 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2111
2112 char* Passwd(userrec *user)
2113 {
2114         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2115         {
2116                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2117                 {
2118                         return i->pass;
2119                 }
2120         }
2121         return "";
2122 }
2123
2124 bool IsDenied(userrec *user)
2125 {
2126         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2127         {
2128                 if (match(user->host,i->host) && (i->type == CC_DENY))
2129                 {
2130                         return true;
2131                 }
2132         }
2133         return false;
2134 }
2135
2136
2137
2138
2139 /* sends out an error notice to all connected clients (not to be used
2140  * lightly!) */
2141
2142 void send_error(char *s)
2143 {
2144         log(DEBUG,"send_error: %s",s);
2145         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2146         {
2147                 if (isnick(i->second->nick))
2148                 {
2149                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2150                 }
2151                 else
2152                 {
2153                         // fix - unregistered connections receive ERROR, not NOTICE
2154                         Write(i->second->fd,"ERROR :%s",s);
2155                 }
2156         }
2157 }
2158
2159 void Error(int status)
2160 {
2161         signal (SIGALRM, SIG_IGN);
2162         signal (SIGPIPE, SIG_IGN);
2163         signal (SIGTERM, SIG_IGN);
2164         signal (SIGABRT, SIG_IGN);
2165         signal (SIGSEGV, SIG_IGN);
2166         signal (SIGURG, SIG_IGN);
2167         signal (SIGKILL, SIG_IGN);
2168         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2169         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2170         Exit(status);
2171 }
2172
2173
2174 int main(int argc, char **argv)
2175 {
2176         Start();
2177         srand(time(NULL));
2178         log(DEBUG,"*** InspIRCd starting up!");
2179         if (!FileExists(CONFIG_FILE))
2180         {
2181                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2182                 log(DEFAULT,"main: no config");
2183                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2184                 Exit(ERROR);
2185         }
2186         if (argc > 1) {
2187                 for (int i = 1; i < argc; i++)
2188                 {
2189                         if (!strcmp(argv[i],"-nofork")) {
2190                                 nofork = true;
2191                         }
2192                         if (!strcmp(argv[i],"-wait")) {
2193                                 sleep(6);
2194                         }
2195                         if (!strcmp(argv[i],"-nolimit")) {
2196                                 unlimitcore = true;
2197                         }
2198                 }
2199         }
2200         strlcpy(MyExecutable,argv[0],MAXBUF);
2201
2202         if (InspIRCd() == ERROR)
2203         {
2204                 log(DEFAULT,"main: daemon function bailed");
2205                 printf("ERROR: could not initialise. Shutting down.\n");
2206                 Exit(ERROR);
2207         }
2208         Exit(TRUE);
2209         return 0;
2210 }
2211
2212 template<typename T> inline string ConvToStr(const T &in)
2213 {
2214         stringstream tmp;
2215         if (!(tmp << in)) return string();
2216         return tmp.str();
2217 }
2218
2219 /* re-allocates a nick in the user_hash after they change nicknames,
2220  * returns a pointer to the new user as it may have moved */
2221
2222 userrec* ReHashNick(char* Old, char* New)
2223 {
2224         user_hash::iterator newnick;
2225         user_hash::iterator oldnick = clientlist.find(Old);
2226
2227         log(DEBUG,"ReHashNick: %s %s",Old,New);
2228
2229         if (!strcasecmp(Old,New))
2230         {
2231                 log(DEBUG,"old nick is new nick, skipping");
2232                 return oldnick->second;
2233         }
2234
2235         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2236
2237         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2238
2239         clientlist[New] = new userrec();
2240         clientlist[New] = oldnick->second;
2241         clientlist.erase(oldnick);
2242
2243         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2244
2245         return clientlist[New];
2246 }
2247
2248 /* adds or updates an entry in the whowas list */
2249 void AddWhoWas(userrec* u)
2250 {
2251         user_hash::iterator iter = whowas.find(u->nick);
2252         userrec *a = new userrec();
2253         strlcpy(a->nick,u->nick,NICKMAX);
2254         strlcpy(a->ident,u->ident,64);
2255         strlcpy(a->dhost,u->dhost,256);
2256         strlcpy(a->host,u->host,256);
2257         strlcpy(a->fullname,u->fullname,128);
2258         strlcpy(a->server,u->server,256);
2259         a->signon = u->signon;
2260
2261         /* MAX_WHOWAS:   max number of /WHOWAS items
2262          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2263          *               can be replaced by a newer one
2264          */
2265
2266         if (iter == whowas.end())
2267         {
2268                 if (whowas.size() == WHOWAS_MAX)
2269                 {
2270                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2271                         {
2272                                 // 3600 seconds in an hour ;)
2273                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2274                                 {
2275                                         if (i->second) delete i->second;
2276                                         i->second = a;
2277                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2278                                         return;
2279                                 }
2280                         }
2281                 }
2282                 else
2283                 {
2284                         log(DEBUG,"added fresh WHOWAS entry");
2285                         whowas[a->nick] = a;
2286                 }
2287         }
2288         else
2289         {
2290                 log(DEBUG,"updated WHOWAS entry");
2291                 if (iter->second) delete iter->second;
2292                 iter->second = a;
2293         }
2294 }
2295
2296
2297 /* add a client connection to the sockets list */
2298 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2299 {
2300         int i;
2301         int blocking = 1;
2302         char resolved[MAXBUF];
2303         string tempnick;
2304         char tn2[MAXBUF];
2305         user_hash::iterator iter;
2306
2307         tempnick = ConvToStr(socket) + "-unknown";
2308         sprintf(tn2,"%d-unknown",socket);
2309
2310         iter = clientlist.find(tempnick);
2311
2312         if (iter != clientlist.end()) return;
2313
2314         /*
2315          * It is OK to access the value here this way since we know
2316          * it exists, we just created it above.
2317          *
2318          * At NO other time should you access a value in a map or a
2319          * hash_map this way.
2320          */
2321         clientlist[tempnick] = new userrec();
2322
2323         NonBlocking(socket);
2324         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2325
2326         clientlist[tempnick]->fd = socket;
2327         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2328         strncpy(clientlist[tempnick]->host, host,160);
2329         strncpy(clientlist[tempnick]->dhost, host,160);
2330         strncpy(clientlist[tempnick]->server, ServerName,256);
2331         strncpy(clientlist[tempnick]->ident, "unknown",9);
2332         clientlist[tempnick]->registered = 0;
2333         clientlist[tempnick]->signon = TIME+dns_timeout;
2334         clientlist[tempnick]->lastping = 1;
2335         clientlist[tempnick]->port = port;
2336         strncpy(clientlist[tempnick]->ip,ip,32);
2337
2338         // set the registration timeout for this user
2339         unsigned long class_regtimeout = 90;
2340         int class_flood = 0;
2341
2342         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2343         {
2344                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2345                 {
2346                         class_regtimeout = (unsigned long)i->registration_timeout;
2347                         class_flood = i->flood;
2348                         clientlist[tempnick]->pingmax = i->pingtime;
2349                         break;
2350                 }
2351         }
2352
2353         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2354         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2355         clientlist[tempnick]->flood = class_flood;
2356
2357         for (int i = 0; i < MAXCHANS; i++)
2358         {
2359                 clientlist[tempnick]->chans[i].channel = NULL;
2360                 clientlist[tempnick]->chans[i].uc_modes = 0;
2361         }
2362
2363         if (clientlist.size() == MAXCLIENTS)
2364                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2365
2366
2367         char* e = matches_exception(ip);
2368         if (!e)
2369         {
2370                 char* r = matches_zline(ip);
2371                 if (r)
2372                 {
2373                         char reason[MAXBUF];
2374                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2375                         kill_link(clientlist[tempnick],reason);
2376                 }
2377         }
2378 }
2379
2380 // this function counts all users connected, wether they are registered or NOT.
2381 int usercnt(void)
2382 {
2383         return clientlist.size();
2384 }
2385
2386 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2387 int registered_usercount(void)
2388 {
2389         int c = 0;
2390         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2391         {
2392                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2393         }
2394         return c;
2395 }
2396
2397 int usercount_invisible(void)
2398 {
2399         int c = 0;
2400
2401         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2402         {
2403                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2404         }
2405         return c;
2406 }
2407
2408 int usercount_opers(void)
2409 {
2410         int c = 0;
2411
2412         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2413         {
2414                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2415         }
2416         return c;
2417 }
2418
2419 int usercount_unknown(void)
2420 {
2421         int c = 0;
2422
2423         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2424         {
2425                 if ((i->second->fd) && (i->second->registered != 7))
2426                         c++;
2427         }
2428         return c;
2429 }
2430
2431 long chancount(void)
2432 {
2433         return chanlist.size();
2434 }
2435
2436 long count_servs(void)
2437 {
2438         int c = 0;
2439         //for (int j = 0; j < 255; j++)
2440         //{
2441         //      if (servers[j] != NULL)
2442         //              c++;
2443         //}
2444         return c;
2445 }
2446
2447 long servercount(void)
2448 {
2449         return count_servs()+1;
2450 }
2451
2452 long local_count()
2453 {
2454         int c = 0;
2455         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2456         {
2457                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2458         }
2459         return c;
2460 }
2461
2462
2463 void ShowMOTD(userrec *user)
2464 {
2465         std::string WholeMOTD = "";
2466         if (!MOTD.size())
2467         {
2468                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2469                 return;
2470         }
2471         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2472         for (int i = 0; i != MOTD.size(); i++)
2473         {
2474                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2475         }
2476         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2477         // only one write operation
2478         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2479
2480 }
2481
2482 void ShowRULES(userrec *user)
2483 {
2484         if (!RULES.size())
2485         {
2486                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2487                 return;
2488         }
2489         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2490         for (int i = 0; i != RULES.size(); i++)
2491         {
2492                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2493         }
2494         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2495 }
2496
2497 /* shows the message of the day, and any other on-logon stuff */
2498 void FullConnectUser(userrec* user)
2499 {
2500         user->registered = 7;
2501         user->idle_lastmsg = TIME;
2502         log(DEBUG,"ConnectUser: %s",user->nick);
2503
2504         if (strcmp(Passwd(user),"") && (!user->haspassed))
2505         {
2506                 kill_link(user,"Invalid password");
2507                 return;
2508         }
2509         if (IsDenied(user))
2510         {
2511                 kill_link(user,"Unauthorised connection");
2512                 return;
2513         }
2514
2515         char match_against[MAXBUF];
2516         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2517         char* e = matches_exception(match_against);
2518         if (!e)
2519         {
2520                 char* r = matches_gline(match_against);
2521                 if (r)
2522                 {
2523                         char reason[MAXBUF];
2524                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2525                         kill_link_silent(user,reason);
2526                         return;
2527                 }
2528                 r = matches_kline(user->host);
2529                 if (r)
2530                 {
2531                         char reason[MAXBUF];
2532                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2533                         kill_link_silent(user,reason);
2534                         return;
2535                 }
2536         }
2537
2538         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2539         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2540         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2541         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2542         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2543         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2544         std::stringstream v;
2545         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2546         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2547         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2548         v << std::string(Network);
2549         std::string data005 = v.str();
2550         FOREACH_MOD On005Numeric(data005);
2551         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2552         // so i'd better split it :)
2553         std::stringstream out(data005);
2554         std::string token = "";
2555         std::string line5 = "";
2556         int token_counter = 0;
2557         while (!out.eof())
2558         {
2559                 out >> token;
2560                 line5 = line5 + token + " ";
2561                 token_counter++;
2562                 if ((token_counter >= 13) || (out.eof() == true))
2563                 {
2564                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2565                         line5 = "";
2566                         token_counter = 0;
2567                 }
2568         }
2569         ShowMOTD(user);
2570         FOREACH_MOD OnUserConnect(user);
2571         WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]",user->port,user->nick,user->ident,user->host,user->ip);
2572
2573         char buffer[MAXBUF];
2574         snprintf(buffer,MAXBUF,"N %d %s %s %s %s +%s %s %s :%s",user->age,user->nick,user->host,user->dhost,user->ident,user->modes,user->ip,ServerName,user->fullname);
2575         NetSendToAll(buffer);
2576 }
2577
2578 /* shows the message of the day, and any other on-logon stuff */
2579 void ConnectUser(userrec *user)
2580 {
2581         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2582         if ((user->dns_done) && (user->registered >= 3))
2583         {
2584                 FullConnectUser(user);
2585         }
2586 }
2587
2588 void handle_version(char **parameters, int pcnt, userrec *user)
2589 {
2590         char Revision[] = "$Revision$";
2591
2592         char *s1 = Revision;
2593         char *savept;
2594         char *v1 = strtok_r(s1," ",&savept);
2595         s1 = savept;
2596         char *v2 = strtok_r(s1," ",&savept);
2597         s1 = savept;
2598
2599         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2600 }
2601
2602
2603 // calls a handler function for a command
2604
2605 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2606 {
2607                 for (int i = 0; i < cmdlist.size(); i++)
2608                 {
2609                         if (!strcasecmp(cmdlist[i].command,commandname))
2610                         {
2611                                 if (cmdlist[i].handler_function)
2612                                 {
2613                                         if (pcnt>=cmdlist[i].min_params)
2614                                         {
2615                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2616                                                 {
2617                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2618                                                 }
2619                                         }
2620                                 }
2621                         }
2622                 }
2623 }
2624
2625 void DoSplitEveryone()
2626 {
2627         bool go_again = true;
2628         while (go_again)
2629         {
2630                 go_again = false;
2631                 for (int i = 0; i < 32; i++)
2632                 {
2633                         if (me[i] != NULL)
2634                         {
2635                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2636                                 {
2637                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2638                                         {
2639                                                 j->routes.clear();
2640                                                 j->CloseConnection();
2641                                                 me[i]->connectors.erase(j);
2642                                                 go_again = true;
2643                                                 break;
2644                                         }
2645                                 }
2646                         }
2647                 }
2648         }
2649         log(DEBUG,"Removed server. Will remove clients...");
2650         // iterate through the userlist and remove all users on this server.
2651         // because we're dealing with a mesh, we dont have to deal with anything
2652         // "down-route" from this server (nice huh)
2653         go_again = true;
2654         char reason[MAXBUF];
2655         while (go_again)
2656         {
2657                 go_again = false;
2658                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2659                 {
2660                         if (strcasecmp(u->second->server,ServerName))
2661                         {
2662                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2663                                 kill_link(u->second,reason);
2664                                 go_again = true;
2665                                 break;
2666                         }
2667                 }
2668         }
2669 }
2670
2671
2672
2673 char islast(const char* s)
2674 {
2675         char c = '`';
2676         for (int j = 0; j < 32; j++)
2677         {
2678                 if (me[j] != NULL)
2679                 {
2680                         for (int k = 0; k < me[j]->connectors.size(); k++)
2681                         {
2682                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2683                                 {
2684                                         c = '|';
2685                                 }
2686                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2687                                 {
2688                                         c = '`';
2689                                 }
2690                         }
2691                 }
2692         }
2693         return c;
2694 }
2695
2696 long map_count(const char* s)
2697 {
2698         int c = 0;
2699         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2700         {
2701                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2702         }
2703         return c;
2704 }
2705
2706
2707 void force_nickchange(userrec* user,const char* newnick)
2708 {
2709         char nick[MAXBUF];
2710         int MOD_RESULT = 0;
2711
2712         strcpy(nick,"");
2713
2714         FOREACH_RESULT(OnUserPreNick(user,newnick));
2715         if (MOD_RESULT) {
2716                 kill_link(user,"Nickname collision");
2717                 return;
2718         }
2719         if (matches_qline(newnick))
2720         {
2721                 kill_link(user,"Nickname collision");
2722                 return;
2723         }
2724
2725         if (user)
2726         {
2727                 if (newnick)
2728                 {
2729                         strncpy(nick,newnick,MAXBUF);
2730                 }
2731                 if (user->registered == 7)
2732                 {
2733                         char* pars[1];
2734                         pars[0] = nick;
2735                         handle_nick(pars,1,user);
2736                 }
2737         }
2738 }
2739
2740
2741 int process_parameters(char **command_p,char *parameters)
2742 {
2743         int i = 0;
2744         int j = 0;
2745         int q = 0;
2746         q = strlen(parameters);
2747         if (!q)
2748         {
2749                 /* no parameters, command_p invalid! */
2750                 return 0;
2751         }
2752         if (parameters[0] == ':')
2753         {
2754                 command_p[0] = parameters+1;
2755                 return 1;
2756         }
2757         if (q)
2758         {
2759                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2760                 {
2761                         /* only one parameter */
2762                         command_p[0] = parameters;
2763                         if (parameters[0] == ':')
2764                         {
2765                                 if (strchr(parameters,' ') != NULL)
2766                                 {
2767                                         command_p[0]++;
2768                                 }
2769                         }
2770                         return 1;
2771                 }
2772         }
2773         command_p[j++] = parameters;
2774         for (int i = 0; i <= q; i++)
2775         {
2776                 if (parameters[i] == ' ')
2777                 {
2778                         command_p[j++] = parameters+i+1;
2779                         parameters[i] = '\0';
2780                         if (command_p[j-1][0] == ':')
2781                         {
2782                                 *command_p[j-1]++; /* remove dodgy ":" */
2783                                 break;
2784                                 /* parameter like this marks end of the sequence */
2785                         }
2786                 }
2787         }
2788         return j; /* returns total number of items in the list */
2789 }
2790
2791 void process_command(userrec *user, char* cmd)
2792 {
2793         char *parameters;
2794         char *command;
2795         char *command_p[127];
2796         char p[MAXBUF], temp[MAXBUF];
2797         int i, j, items, cmd_found;
2798
2799         for (int i = 0; i < 127; i++)
2800                 command_p[i] = NULL;
2801
2802         if (!user)
2803         {
2804                 return;
2805         }
2806         if (!cmd)
2807         {
2808                 return;
2809         }
2810         if (!strcmp(cmd,""))
2811         {
2812                 return;
2813         }
2814
2815         int total_params = 0;
2816         if (strlen(cmd)>2)
2817         {
2818                 for (int q = 0; q < strlen(cmd)-1; q++)
2819                 {
2820                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2821                         {
2822                                 total_params++;
2823                                 // found a 'trailing', we dont count them after this.
2824                                 break;
2825                         }
2826                         if (cmd[q] == ' ')
2827                                 total_params++;
2828                 }
2829         }
2830
2831         // another phidjit bug...
2832         if (total_params > 126)
2833         {
2834                 //kill_link(user,"Protocol violation (1)");
2835                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2836                 return;
2837         }
2838
2839         strlcpy(temp,cmd,MAXBUF);
2840
2841         std::string tmp = cmd;
2842         for (int i = 0; i <= MODCOUNT; i++)
2843         {
2844                 std::string oldtmp = tmp;
2845                 modules[i]->OnServerRaw(tmp,true,user);
2846                 if (oldtmp != tmp)
2847                 {
2848                         log(DEBUG,"A Module changed the input string!");
2849                         log(DEBUG,"New string: %s",tmp.c_str());
2850                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2851                         break;
2852                 }
2853         }
2854         strlcpy(cmd,tmp.c_str(),MAXBUF);
2855         strlcpy(temp,cmd,MAXBUF);
2856
2857         if (!strchr(cmd,' '))
2858         {
2859                 /* no parameters, lets skip the formalities and not chop up
2860                  * the string */
2861                 log(DEBUG,"About to preprocess command with no params");
2862                 items = 0;
2863                 command_p[0] = NULL;
2864                 parameters = NULL;
2865                 for (int i = 0; i <= strlen(cmd); i++)
2866                 {
2867                         cmd[i] = toupper(cmd[i]);
2868                 }
2869                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2870                 command = cmd;
2871         }
2872         else
2873         {
2874                 strcpy(cmd,"");
2875                 j = 0;
2876                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2877                 for (int i = 0; i < strlen(temp); i++)
2878                 {
2879                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2880                         {
2881                                 cmd[j++] = temp[i];
2882                                 cmd[j] = 0;
2883                         }
2884                 }
2885                 /* split the full string into a command plus parameters */
2886                 parameters = p;
2887                 strcpy(p," ");
2888                 command = cmd;
2889                 if (strchr(cmd,' '))
2890                 {
2891                         for (int i = 0; i <= strlen(cmd); i++)
2892                         {
2893                                 /* capitalise the command ONLY, leave params intact */
2894                                 cmd[i] = toupper(cmd[i]);
2895                                 /* are we nearly there yet?! :P */
2896                                 if (cmd[i] == ' ')
2897                                 {
2898                                         command = cmd;
2899                                         parameters = cmd+i+1;
2900                                         cmd[i] = '\0';
2901                                         break;
2902                                 }
2903                         }
2904                 }
2905                 else
2906                 {
2907                         for (int i = 0; i <= strlen(cmd); i++)
2908                         {
2909                                 cmd[i] = toupper(cmd[i]);
2910                         }
2911                 }
2912
2913         }
2914         cmd_found = 0;
2915
2916         if (strlen(command)>MAXCOMMAND)
2917         {
2918                 //kill_link(user,"Protocol violation (2)");
2919                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2920                 return;
2921         }
2922
2923         for (int x = 0; x < strlen(command); x++)
2924         {
2925                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2926                 {
2927                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2928                         {
2929                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2930                                 {
2931                                         //kill_link(user,"Protocol violation (3)");
2932                                         WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2933                                         return;
2934                                 }
2935                         }
2936                 }
2937         }
2938
2939         for (int i = 0; i != cmdlist.size(); i++)
2940         {
2941                 if (strcmp(cmdlist[i].command,""))
2942                 {
2943                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2944                         {
2945                                 log(DEBUG,"Found matching command");
2946
2947                                 if (parameters)
2948                                 {
2949                                         if (strcmp(parameters,""))
2950                                         {
2951                                                 items = process_parameters(command_p,parameters);
2952                                         }
2953                                         else
2954                                         {
2955                                                 items = 0;
2956                                                 command_p[0] = NULL;
2957                                         }
2958                                 }
2959                                 else
2960                                 {
2961                                         items = 0;
2962                                         command_p[0] = NULL;
2963                                 }
2964
2965                                 if (user)
2966                                 {
2967                                         log(DEBUG,"Processing command");
2968
2969                                         /* activity resets the ping pending timer */
2970                                         user->nping = TIME + user->pingmax;
2971                                         if ((items) < cmdlist[i].min_params)
2972                                         {
2973                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2974                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2975                                                 return;
2976                                         }
2977                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2978                                         {
2979                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2980                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2981                                                 cmd_found = 1;
2982                                                 return;
2983                                         }
2984                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
2985                                         {
2986                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2987                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
2988                                                 cmd_found = 1;
2989                                                 return;
2990                                         }
2991                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2992                                          * deny command! */
2993                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2994                                         {
2995                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2996                                                 {
2997                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2998                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2999                                                         return;
3000                                                 }
3001                                         }
3002                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3003                                         {
3004                                                 char* mycmd;
3005                                                 char* savept2;
3006                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3007                                                 while (mycmd)
3008                                                 {
3009                                                         if (!strcasecmp(mycmd,command))
3010                                                         {
3011                                                                 // command is disabled!
3012                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3013                                                                 return;
3014                                                         }
3015                                                         mycmd = strtok_r(NULL," ",&savept2);
3016                                                 }
3017
3018
3019                                         }
3020                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
3021                                         {
3022                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
3023                                                 if (cmdlist[i].handler_function)
3024                                                 {
3025                                                         /* ikky /stats counters */
3026                                                         if (temp)
3027                                                         {
3028                                                                 if (user)
3029                                                                 {
3030                                                                         user->bytes_in += strlen(temp);
3031                                                                         user->cmds_in++;
3032                                                                         user->bytes_out+=strlen(temp);
3033                                                                         user->cmds_out++;
3034                                                                 }
3035                                                                 cmdlist[i].use_count++;
3036                                                                 cmdlist[i].total_bytes+=strlen(temp);
3037                                                         }
3038
3039                                                         /* WARNING: nothing may come after the
3040                                                          * command handler call, as the handler
3041                                                          * may free the user structure! */
3042
3043                                                         cmdlist[i].handler_function(command_p,items,user);
3044                                                 }
3045                                                 return;
3046                                         }
3047                                         else
3048                                         {
3049                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3050                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3051                                                 return;
3052                                         }
3053                                 }
3054                                 cmd_found = 1;
3055                         }
3056                 }
3057         }
3058         if ((!cmd_found) && (user))
3059         {
3060                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
3061                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3062         }
3063 }
3064
3065
3066 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3067 {
3068         command_t comm;
3069         /* create the command and push it onto the table */
3070         strlcpy(comm.command,cmd,MAXBUF);
3071         strlcpy(comm.source,source,MAXBUF);
3072         comm.handler_function = f;
3073         comm.flags_needed = flags;
3074         comm.min_params = minparams;
3075         comm.use_count = 0;
3076         comm.total_bytes = 0;
3077         cmdlist.push_back(comm);
3078         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
3079 }
3080
3081 bool removecommands(const char* source)
3082 {
3083         bool go_again = true;
3084         while (go_again)
3085         {
3086                 go_again = false;
3087                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3088                 {
3089                         if (!strcmp(i->source,source))
3090                         {
3091                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3092                                 cmdlist.erase(i);
3093                                 go_again = true;
3094                                 break;
3095                         }
3096                 }
3097         }
3098         return true;
3099 }
3100
3101 void SetupCommandTable(void)
3102 {
3103         createcommand("USER",handle_user,0,4,"<core>");
3104         createcommand("NICK",handle_nick,0,1,"<core>");
3105         createcommand("QUIT",handle_quit,0,0,"<core>");
3106         createcommand("VERSION",handle_version,0,0,"<core>");
3107         createcommand("PING",handle_ping,0,1,"<core>");
3108         createcommand("PONG",handle_pong,0,1,"<core>");
3109         createcommand("ADMIN",handle_admin,0,0,"<core>");
3110         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3111         createcommand("INFO",handle_info,0,0,"<core>");
3112         createcommand("TIME",handle_time,0,0,"<core>");
3113         createcommand("WHOIS",handle_whois,0,1,"<core>");
3114         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3115         createcommand("NOTICE",handle_notice,0,2,"<core>");
3116         createcommand("JOIN",handle_join,0,1,"<core>");
3117         createcommand("NAMES",handle_names,0,0,"<core>");
3118         createcommand("PART",handle_part,0,1,"<core>");
3119         createcommand("KICK",handle_kick,0,2,"<core>");
3120         createcommand("MODE",handle_mode,0,1,"<core>");
3121         createcommand("TOPIC",handle_topic,0,1,"<core>");
3122         createcommand("WHO",handle_who,0,1,"<core>");
3123         createcommand("MOTD",handle_motd,0,0,"<core>");
3124         createcommand("RULES",handle_rules,0,0,"<core>");
3125         createcommand("OPER",handle_oper,0,2,"<core>");
3126         createcommand("LIST",handle_list,0,0,"<core>");
3127         createcommand("DIE",handle_die,'o',1,"<core>");
3128         createcommand("RESTART",handle_restart,'o',1,"<core>");
3129         createcommand("KILL",handle_kill,'o',2,"<core>");
3130         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3131         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3132         createcommand("STATS",handle_stats,0,1,"<core>");
3133         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3134         createcommand("AWAY",handle_away,0,0,"<core>");
3135         createcommand("ISON",handle_ison,0,0,"<core>");
3136         createcommand("SUMMON",handle_summon,0,0,"<core>");
3137         createcommand("USERS",handle_users,0,0,"<core>");
3138         createcommand("INVITE",handle_invite,0,2,"<core>");
3139         createcommand("PASS",handle_pass,0,1,"<core>");
3140         createcommand("TRACE",handle_trace,'o',0,"<core>");
3141         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3142         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3143         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3144         createcommand("MODULES",handle_modules,0,0,"<core>");
3145         createcommand("LINKS",handle_links,0,0,"<core>");
3146         createcommand("MAP",handle_map,0,0,"<core>");
3147         createcommand("KLINE",handle_kline,'o',1,"<core>");
3148         createcommand("GLINE",handle_gline,'o',1,"<core>");
3149         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3150         createcommand("QLINE",handle_qline,'o',1,"<core>");
3151         createcommand("ELINE",handle_eline,'o',1,"<core>");
3152         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3153         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3154         createcommand("SERVER",handle_server,0,0,"<core>");
3155 }
3156
3157 void process_buffer(const char* cmdbuf,userrec *user)
3158 {
3159         if (!user)
3160         {
3161                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3162                 return;
3163         }
3164         char cmd[MAXBUF];
3165         int i;
3166         if (!cmdbuf)
3167         {
3168                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3169                 return;
3170         }
3171         if (!strcmp(cmdbuf,""))
3172         {
3173                 return;
3174         }
3175         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
3176
3177         strlcpy(cmd,cmdbuf,MAXBUF);
3178         if (!strcmp(cmd,""))
3179         {
3180                 return;
3181         }
3182         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3183         {
3184                 cmd[strlen(cmd)-1] = '\0';
3185         }
3186         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3187         {
3188                 cmd[strlen(cmd)-1] = '\0';
3189         }
3190
3191         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
3192         {
3193                 cmd[strlen(cmd)-1] = '\0';
3194         }
3195
3196         if (!strcmp(cmd,""))
3197         {
3198                 return;
3199         }
3200         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
3201         tidystring(cmd);
3202         if ((user) && (cmd))
3203         {
3204                 process_command(user,cmd);
3205         }
3206 }
3207
3208 void DoSync(serverrec* serv, char* tcp_host)
3209 {
3210         char data[MAXBUF];
3211         log(DEBUG,"Sending sync");
3212         // send start of sync marker: Y <timestamp>
3213         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3214         // except the ones its receiving it from.
3215         snprintf(data,MAXBUF,"Y %d",TIME);
3216         serv->SendPacket(data,tcp_host);
3217         // send users and channels
3218         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3219         {
3220                 snprintf(data,MAXBUF,"N %d %s %s %s %s +%s %s %s :%s",u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->ip,u->second->server,u->second->fullname);
3221                 serv->SendPacket(data,tcp_host);
3222                 if (strchr(u->second->modes,'o'))
3223                 {
3224                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3225                         serv->SendPacket(data,tcp_host);
3226                 }
3227                 for (int i = 0; i <= MODCOUNT; i++)
3228                 {
3229                         string_list l = modules[i]->OnUserSync(u->second);
3230                         for (int j = 0; j < l.size(); j++)
3231                         {
3232                                 strlcpy(data,l[j].c_str(),MAXBUF);
3233                                 serv->SendPacket(data,tcp_host);
3234                         }
3235                 }
3236                 if (strcmp(chlist(u->second),""))
3237                 {
3238                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
3239                         serv->SendPacket(data,tcp_host);
3240                 }
3241         }
3242         // send channel modes, topics etc...
3243         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3244         {
3245                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3246                 serv->SendPacket(data,tcp_host);
3247                 for (int i = 0; i <= MODCOUNT; i++)
3248                 {
3249                         string_list l = modules[i]->OnChannelSync(c->second);
3250                         for (int j = 0; j < l.size(); j++)
3251                         {
3252                                 strlcpy(data,l[j].c_str(),MAXBUF);
3253                                 serv->SendPacket(data,tcp_host);
3254                         }
3255                 }
3256                 if (strcmp(c->second->topic,""))
3257                 {
3258                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3259                         serv->SendPacket(data,tcp_host);
3260                 }
3261                 // send current banlist
3262
3263                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3264                 {
3265                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
3266                         serv->SendPacket(data,tcp_host);
3267                 }
3268         }
3269         // sync global zlines, glines, etc
3270         sync_xlines(serv,tcp_host);
3271
3272         for (int j = 0; j < 32; j++)
3273         {
3274                 if (me[j] != NULL)
3275                 {
3276                         for (int k = 0; k < me[j]->connectors.size(); k++)
3277                         {
3278                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3279                                 {
3280                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3281                                         serv->SendPacket(data,tcp_host);
3282                                         NetSendMyRoutingTable();
3283                                 }
3284                         }
3285                 }
3286         }
3287
3288         snprintf(data,MAXBUF,"F %d",TIME);
3289         serv->SendPacket(data,tcp_host);
3290         log(DEBUG,"Sent sync");
3291         // ircd sends its serverlist after the end of sync here
3292 }
3293
3294
3295 void NetSendMyRoutingTable()
3296 {
3297         // send out a line saying what is reachable to us.
3298         // E.g. if A is linked to B C and D, send out:
3299         // $ A B C D
3300         // if its only linked to B and D send out:
3301         // $ A B D
3302         // if it has no links, dont even send out the line at all.
3303         char buffer[MAXBUF];
3304         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3305         bool sendit = false;
3306         for (int i = 0; i < 32; i++)
3307         {
3308                 if (me[i] != NULL)
3309                 {
3310                         for (int j = 0; j < me[i]->connectors.size(); j++)
3311                         {
3312                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3313                                 {
3314                                         strlcat(buffer," ",MAXBUF);
3315                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3316                                         sendit = true;
3317                                 }
3318                         }
3319                 }
3320         }
3321         if (sendit)
3322                 NetSendToAll(buffer);
3323 }
3324
3325
3326 void DoSplit(const char* params)
3327 {
3328         bool go_again = true;
3329         while (go_again)
3330         {
3331                 go_again = false;
3332                 for (int i = 0; i < 32; i++)
3333                 {
3334                         if (me[i] != NULL)
3335                         {
3336                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3337                                 {
3338                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3339                                         {
3340                                                 j->routes.clear();
3341                                                 j->CloseConnection();
3342                                                 me[i]->connectors.erase(j);
3343                                                 go_again = true;
3344                                                 break;
3345                                         }
3346                                 }
3347                         }
3348                 }
3349         }
3350         log(DEBUG,"Removed server. Will remove clients...");
3351         // iterate through the userlist and remove all users on this server.
3352         // because we're dealing with a mesh, we dont have to deal with anything
3353         // "down-route" from this server (nice huh)
3354         go_again = true;
3355         char reason[MAXBUF];
3356         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3357         while (go_again)
3358         {
3359                 go_again = false;
3360                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3361                 {
3362                         if (!strcasecmp(u->second->server,params))
3363                         {
3364                                 kill_link(u->second,reason);
3365                                 go_again = true;
3366                                 break;
3367                         }
3368                 }
3369         }
3370 }
3371
3372 // removes a server. Will NOT remove its users!
3373
3374 void RemoveServer(const char* name)
3375 {
3376         bool go_again = true;
3377         while (go_again)
3378         {
3379                 go_again = false;
3380                 for (int i = 0; i < 32; i++)
3381                 {
3382                         if (me[i] != NULL)
3383                         {
3384                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3385                                 {
3386                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3387                                         {
3388                                                 j->routes.clear();
3389                                                 j->CloseConnection();
3390                                                 me[i]->connectors.erase(j);
3391                                                 go_again = true;
3392                                                 break;
3393                                         }
3394                                 }
3395                         }
3396                 }
3397         }
3398 }
3399
3400
3401 int reap_counter = 0;
3402 char MODERR[MAXBUF];
3403
3404 char* ModuleError()
3405 {
3406         return MODERR;
3407 }
3408
3409 void erase_factory(int j)
3410 {
3411         int v = 0;
3412         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3413         {
3414                 if (v == j)
3415                 {
3416                         factory.erase(t);
3417                         factory.push_back(NULL);
3418                         return;
3419                 }
3420                 v++;
3421         }
3422 }
3423
3424 void erase_module(int j)
3425 {
3426         int v = 0;
3427         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3428         {
3429                 if (v == j)
3430                 {
3431                         delete *m;
3432                         modules.erase(m);
3433                         modules.push_back(NULL);
3434                         break;
3435                 }
3436                 v++;
3437         }
3438         int v2 = 0;
3439         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3440         {
3441                 if (v2 == j)
3442                 {
3443                        module_names.erase(v);
3444                        break;
3445                 }
3446                 v2++;
3447         }
3448
3449 }
3450
3451 bool UnloadModule(const char* filename)
3452 {
3453         for (int j = 0; j != module_names.size(); j++)
3454         {
3455                 if (module_names[j] == std::string(filename))
3456                 {
3457                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3458                         {
3459                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3460                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3461                                 return false;
3462                         }
3463                         // found the module
3464                         log(DEBUG,"Deleting module...");
3465                         erase_module(j);
3466                         log(DEBUG,"Erasing module entry...");
3467                         erase_factory(j);
3468                         log(DEBUG,"Removing dependent commands...");
3469                         removecommands(filename);
3470                         log(DEFAULT,"Module %s unloaded",filename);
3471                         MODCOUNT--;
3472                         return true;
3473                 }
3474         }
3475         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3476         snprintf(MODERR,MAXBUF,"Module not loaded");
3477         return false;
3478 }
3479
3480 bool DirValid(char* dirandfile)
3481 {
3482         char work[MAXBUF];
3483         strlcpy(work,dirandfile,MAXBUF);
3484         int p = strlen(work);
3485         // we just want the dir
3486         while (strlen(work))
3487         {
3488                 if (work[p] == '/')
3489                 {
3490                         work[p] = '\0';
3491                         break;
3492                 }
3493                 work[p--] = '\0';
3494         }
3495         log(DEBUG,"Dir valid: %s",work);
3496         char buffer[MAXBUF], otherdir[MAXBUF];
3497         // Get the current working directory
3498         if( getcwd( buffer, MAXBUF ) == NULL )
3499                 return false;
3500         chdir(work);
3501         if( getcwd( otherdir, MAXBUF ) == NULL )
3502                 return false;
3503         chdir(buffer);
3504         log(DEBUG,"Dir is really: %s",otherdir);
3505         if (strlen(otherdir) >= strlen(work))
3506         {
3507                 otherdir[strlen(work)] = '\0';
3508                 log(DEBUG,"Compare: '%s' -> '%s'",otherdir,work);
3509                 if (!strcmp(otherdir,work))
3510                 {
3511                         log(DEBUG,"Match ok");
3512                         return true;
3513                 }
3514                 log(DEBUG,"No match");
3515                 return false;
3516         }
3517         else return false;
3518 }
3519
3520 bool LoadModule(const char* filename)
3521 {
3522         char modfile[MAXBUF];
3523         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3524         if (!DirValid(modfile))
3525         {
3526                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3527                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3528                 return false;
3529         }
3530         log(DEBUG,"Loading module: %s",modfile);
3531         if (FileExists(modfile))
3532         {
3533                 for (int j = 0; j < module_names.size(); j++)
3534                 {
3535                         if (module_names[j] == std::string(filename))
3536                         {
3537                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3538                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3539                                 return false;
3540                         }
3541                 }
3542                 ircd_module* a = new ircd_module(modfile);
3543                 factory[MODCOUNT+1] = a;
3544                 if (factory[MODCOUNT+1]->LastError())
3545                 {
3546                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3547                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3548                         MODCOUNT--;
3549                         return false;
3550                 }
3551                 if (factory[MODCOUNT+1]->factory)
3552                 {
3553                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3554                         modules[MODCOUNT+1] = m;
3555                         /* save the module and the module's classfactory, if
3556                          * this isnt done, random crashes can occur :/ */
3557                         module_names.push_back(filename);
3558                 }
3559                 else
3560                 {
3561                         log(DEFAULT,"Unable to load %s",modfile);
3562                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3563                         return false;
3564                 }
3565         }
3566         else
3567         {
3568                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3569                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3570                 return false;
3571         }
3572         MODCOUNT++;
3573         return true;
3574 }
3575
3576 int InspIRCd(void)
3577 {
3578         struct sockaddr_in client,server;
3579         char addrs[MAXBUF][255];
3580         int incomingSockfd, result = TRUE;
3581         socklen_t length;
3582         int count = 0;
3583         int selectResult = 0, selectResult2 = 0;
3584         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3585         char resolvedHost[MAXBUF];
3586         fd_set selectFds;
3587         timeval tv;
3588
3589         log_file = fopen("ircd.log","a+");
3590         if (!log_file)
3591         {
3592                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3593                 Exit(ERROR);
3594         }
3595
3596         log(DEBUG,"InspIRCd: startup: begin");
3597         log(DEBUG,"$Id$");
3598         if (geteuid() == 0)
3599         {
3600                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3601                 Exit(ERROR);
3602                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3603         }
3604         SetupCommandTable();
3605         log(DEBUG,"InspIRCd: startup: default command table set up");
3606
3607         ReadConfig(true,NULL);
3608         if (strcmp(DieValue,""))
3609         {
3610                 printf("WARNING: %s\n\n",DieValue);
3611                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3612                 exit(0);
3613         }
3614         log(DEBUG,"InspIRCd: startup: read config");
3615
3616         int count2 = 0, count3 = 0;
3617
3618         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3619         {
3620                 ConfValue("bind","port",count,configToken,&config_f);
3621                 ConfValue("bind","address",count,Addr,&config_f);
3622                 ConfValue("bind","type",count,Type,&config_f);
3623                 if (!strcmp(Type,"servers"))
3624                 {
3625                         char Default[MAXBUF];
3626                         strcpy(Default,"no");
3627                         ConfValue("bind","default",count,Default,&config_f);
3628                         if (strchr(Default,'y'))
3629                         {
3630                                 defaultRoute = count3;
3631                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3632                         }
3633                         me[count3] = new serverrec(ServerName,100L,false);
3634                         if (!me[count3]->CreateListener(Addr,atoi(configToken)))
3635                         {
3636                                 log(DEFAULT,"Error! Failed to bind port %d",atoi(configToken));
3637                         }
3638                         else
3639                         {
3640                                 count3++;
3641                         }
3642                 }
3643                 else
3644                 {
3645                         ports[count2] = atoi(configToken);
3646                         strlcpy(addrs[count2],Addr,256);
3647                         count2++;
3648                 }
3649                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3650         }
3651         portCount = count2;
3652         UDPportCount = count3;
3653
3654         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3655
3656         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3657
3658         printf("\n");
3659
3660         /* BugFix By Craig! :p */
3661         MODCOUNT = -1;
3662         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3663         {
3664                 ConfValue("module","name",count2,configToken,&config_f);
3665                 printf("Loading module... \033[1;37m%s\033[0;37m\n",configToken);
3666                 if (!LoadModule(configToken))
3667                 {
3668                         log(DEBUG,"Exiting due to a module loader error.");
3669                         printf("There was an error loading a module: %s\n",ModuleError());
3670                         Exit(0);
3671                 }
3672         }
3673         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3674
3675         printf("\nInspIRCd is now running!\n");
3676
3677         startup_time = time(NULL);
3678
3679         if (nofork)
3680         {
3681                 log(VERBOSE,"Not forking as -nofork was specified");
3682         }
3683         else
3684         {
3685                 if (DaemonSeed() == ERROR)
3686                 {
3687                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3688                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3689                         Exit(ERROR);
3690                 }
3691         }
3692
3693         char PID[MAXBUF];
3694         ConfValue("pid","file",0,PID,&config_f);
3695         WritePID(PID);
3696
3697
3698         /* setup select call */
3699         FD_ZERO(&selectFds);
3700         log(DEBUG,"InspIRCd: startup: zero selects");
3701         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3702
3703         for (count = 0; count < portCount; count++)
3704         {
3705                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3706                 {
3707                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3708                         return(ERROR);
3709                 }
3710                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3711                 {
3712                         log(DEFAULT,"InspIRCd: startup: failed to bind port %d",ports[count]);
3713                 }
3714                 else    /* well we at least bound to one socket so we'll continue */
3715                 {
3716                         boundPortCount++;
3717                 }
3718         }
3719
3720         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3721
3722         /* if we didn't bind to anything then abort */
3723         if (boundPortCount == 0)
3724         {
3725                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3726                 return (ERROR);
3727         }
3728
3729
3730         length = sizeof (client);
3731         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3732
3733         fd_set serverfds;
3734         timeval tvs;
3735         tvs.tv_usec = 7000L;
3736         tvs.tv_sec = 0;
3737         tv.tv_sec = 0;
3738         tv.tv_usec = 7000L;
3739         char data[10240];
3740         timeval tval;
3741         fd_set sfd;
3742         tval.tv_usec = 7000L;
3743         tval.tv_sec = 0;
3744         int total_in_this_set = 0;
3745         int v = 0;
3746         bool expire_run = false;
3747
3748         /* main loop, this never returns */
3749         for (;;)
3750         {
3751 #ifdef _POSIX_PRIORITY_SCHEDULING
3752                 sched_yield();
3753 #endif
3754                 // poll dns queue
3755                 dns_poll();
3756                 FD_ZERO(&sfd);
3757
3758                 // we only read time() once per iteration rather than tons of times!
3759                 TIME = time(NULL);
3760
3761                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3762                 // them in a list, then reap the list every second or so.
3763                 if (((TIME % 5) == 0) && (!expire_run))
3764                 {
3765                         expire_lines();
3766                         FOREACH_MOD OnBackgroundTimer(TIME);
3767                         expire_run = true;
3768                         continue;
3769                 }
3770                 if ((TIME % 5) == 1)
3771                         expire_run = false;
3772                 if (reap_counter>300)
3773                 {
3774                         if (fd_reap.size() > 0)
3775                         {
3776                                 for( int n = 0; n < fd_reap.size(); n++)
3777                                 {
3778                                         if ((fd_reap[n] > -1))
3779                                         {
3780                                                 close(fd_reap[n]);
3781                                                 shutdown (fd_reap[n],2);
3782                                         }
3783                                 }
3784                         }
3785                         fd_reap.clear();
3786                         reap_counter=0;
3787                 }
3788                 reap_counter++;
3789
3790                 // fix by brain - this must be below any manipulation of the hashmap by modules
3791                 user_hash::iterator count2 = clientlist.begin();
3792
3793                 FD_ZERO(&serverfds);
3794
3795                 for (int x = 0; x != UDPportCount; x++)
3796                 {
3797                         if (me[x])
3798                                 FD_SET(me[x]->fd, &serverfds);
3799                 }
3800
3801                 // serverFds timevals went here
3802
3803                 tvs.tv_usec = 7000L;
3804                 tvs.tv_sec = 0;
3805                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3806                 if (servresult > 0)
3807                 {
3808                         for (int x = 0; x != UDPportCount; x++)
3809                         {
3810                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3811                                 {
3812                                         char remotehost[MAXBUF],resolved[MAXBUF];
3813                                         length = sizeof (client);
3814                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3815                                         if (incomingSockfd != -1)
3816                                         {
3817                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3818                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3819                                                 {
3820                                                         strlcpy(resolved,remotehost,MAXBUF);
3821                                                 }
3822                                                 // add to this connections ircd_connector vector
3823                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3824                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3825                                         }
3826                                 }
3827                         }
3828                 }
3829
3830                 for (int x = 0; x < UDPportCount; x++)
3831                 {
3832                         std::deque<std::string> msgs;
3833                         msgs.clear();
3834                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3835                         {
3836                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3837                                 {
3838                                         char udp_msg[MAXBUF];
3839                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3840                                         log(DEBUG,"Processing: %s",udp_msg);
3841                                         if (strlen(udp_msg)<1)
3842                                         {
3843                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3844                                                 break;
3845                                         }
3846                                         // during a netburst, send all data to all other linked servers
3847                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3848                                         {
3849                                                 if (is_uline(tcp_host))
3850                                                 {
3851                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3852                                                         {
3853                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3854                                                         }
3855                                                 }
3856                                                 else
3857                                                         NetSendToAllExcept(tcp_host,udp_msg);
3858                                         }
3859                                         std::string msg = udp_msg;
3860                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3861                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3862                                         handle_link_packet(udp_msg, tcp_host, me[x]);
3863                                 }
3864                                 goto label;
3865                         }
3866                 }
3867
3868
3869         while (count2 != clientlist.end())
3870         {
3871                 FD_ZERO(&sfd);
3872                 total_in_this_set = 0;
3873
3874                 user_hash::iterator xcount = count2;
3875                 user_hash::iterator endingiter = count2;
3876
3877                 if (count2 == clientlist.end()) break;
3878
3879                 if (count2->second)
3880                 if (count2->second->fd != 0)
3881                 {
3882                         // assemble up to 64 sockets into an fd_set
3883                         // to implement a pooling mechanism.
3884                         //
3885                         // This should be up to 64x faster than the
3886                         // old implementation.
3887                         while (total_in_this_set < 64)
3888                         {
3889                                 if (count2 != clientlist.end())
3890                                 {
3891                                         // we don't check the state of remote users.
3892                                         if ((count2->second->fd != -1) && (count2->second->fd != FD_MAGIC_NUMBER))
3893                                         {
3894                                                 FD_SET (count2->second->fd, &sfd);
3895
3896                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3897                                                 // their connection class.
3898                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
3899                                                 {
3900                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3901                                                         kill_link(count2->second,"Registration timeout");
3902                                                         goto label;
3903                                                 }
3904                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3))
3905                                                 {
3906                                                         count2->second->dns_done = true;
3907                                                         FullConnectUser(count2->second);
3908                                                         goto label;
3909                                                 }
3910                                                 if ((count2->second->dns_done) && (count2->second->registered == 3)) // both NICK and USER... and DNS
3911                                                 {
3912                                                         FullConnectUser(count2->second);
3913                                                         goto label;
3914                                                 }
3915                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3916                                                 {
3917                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3918                                                         {
3919                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3920                                                                 kill_link(count2->second,"Ping timeout");
3921                                                                 goto label;
3922                                                         }
3923                                                         Write(count2->second->fd,"PING :%s",ServerName);
3924                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3925                                                         count2->second->lastping = 0;
3926                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
3927                                                 }
3928                                         }
3929                                         count2++;
3930                                         total_in_this_set++;
3931                                 }
3932                                 else break;
3933                         }
3934
3935                         endingiter = count2;
3936                         count2 = xcount; // roll back to where we were
3937
3938                         v = 0;
3939
3940                         // tvals defined here
3941
3942                         tval.tv_usec = 7000L;
3943                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3944
3945                         // now loop through all of the items in this pool if any are waiting
3946                         //if (selectResult2 > 0)
3947                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3948                         {
3949
3950 #ifdef _POSIX_PRIORITY_SCHEDULING
3951                                 sched_yield();
3952 #endif
3953
3954                                 result = EAGAIN;
3955                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3956                                 {
3957                                         memset(data, 0, 10240);
3958                                         result = read(count2a->second->fd, data, 10240);
3959
3960                                         if (result)
3961                                         {
3962                                                 userrec* current = count2a->second;
3963                                                 int currfd = current->fd;
3964                                                 char* l = strtok(data,"\n");
3965                                                 int floodlines = 0;
3966                                                 while (l)
3967                                                 {
3968                                                         floodlines++;
3969                                                         if ((floodlines > current->flood) && (current->flood != 0))
3970                                                         {
3971                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3972                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3973                                                                 kill_link(current,"Excess flood");
3974                                                                 goto label;
3975                                                         }
3976                                                         char sanitized[NetBufferSize];
3977                                                         memset(sanitized, 0, NetBufferSize);
3978                                                         int ptt = 0;
3979                                                         for (int pt = 0; pt < strlen(l); pt++)
3980                                                         {
3981                                                                 if (l[pt] != '\r')
3982                                                                 {
3983                                                                         sanitized[ptt++] = l[pt];
3984                                                                 }
3985                                                         }
3986                                                         sanitized[ptt] = '\0';
3987                                                         if (strlen(sanitized))
3988                                                         {
3989
3990
3991                                                                 // we're gonna re-scan to check if the nick is gone, after every
3992                                                                 // command - if it has, we're gonna bail
3993                                                                 bool find_again = false;
3994                                                                 process_buffer(sanitized,current);
3995
3996                                                                 // look for the user's record in case it's changed
3997                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3998                                                                 {
3999                                                                         if (c2->second->fd == currfd)
4000                                                                         {
4001                                                                                 // found again, update pointer
4002                                                                                 current == c2->second;
4003                                                                                 find_again = true;
4004                                                                                 break;
4005                                                                         }
4006                                                                 }
4007                                                                 if (!find_again)
4008                                                                         goto label;
4009
4010                                                         }
4011                                                         l = strtok(NULL,"\n");
4012                                                 }
4013                                                 goto label;
4014                                         }
4015
4016                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4017                                         {
4018                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4019                                                 kill_link(count2a->second,strerror(errno));
4020                                                 goto label;
4021                                         }
4022                                 }
4023                                 // result EAGAIN means nothing read
4024                                 if (result == EAGAIN)
4025                                 {
4026                                 }
4027                                 else
4028                                 if (result == 0)
4029                                 {
4030                                         if (count2->second)
4031                                         {
4032                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4033                                                 kill_link(count2a->second,"Client exited");
4034                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4035                                                 log(DEBUG,"Bailing from client exit");
4036                                                 goto label;
4037                                         }
4038                                 }
4039                                 else if (result > 0)
4040                                 {
4041                                 }
4042                         }
4043                 }
4044                 for (int q = 0; q < total_in_this_set; q++)
4045                 {
4046                         // there is no iterator += operator :(
4047                         //if (count2 != clientlist.end())
4048                         //{
4049                                 count2++;
4050                         //}
4051                 }
4052         }
4053
4054         // set up select call
4055         for (count = 0; count < boundPortCount; count++)
4056         {
4057                 FD_SET (openSockfd[count], &selectFds);
4058         }
4059
4060         tv.tv_usec = 7000L;
4061         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4062
4063         /* select is reporting a waiting socket. Poll them all to find out which */
4064         if (selectResult > 0)
4065         {
4066                 char target[MAXBUF], resolved[MAXBUF];
4067                 for (count = 0; count < boundPortCount; count++)
4068                 {
4069                         if (FD_ISSET (openSockfd[count], &selectFds))
4070                         {
4071                                 length = sizeof (client);
4072                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4073
4074                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4075                                 strlcpy (resolved, target, MAXBUF);
4076
4077                                 if (incomingSockfd < 0)
4078                                 {
4079                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
4080                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
4081                                 }
4082                                 else
4083                                 {
4084                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4085                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
4086                                 }
4087                                 goto label;
4088                         }
4089                 }
4090         }
4091         label:
4092         if (0) {};
4093 }
4094 /* not reached */
4095 close (incomingSockfd);
4096 }
4097