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) delete i->second;
1239                                                 chanlist.erase(i);
1240                                                 go_again = 1;
1241                                                 purge++;
1242                                                 break;
1243                                         }
1244                                 }
1245                                 else
1246                                 {
1247                                         log(DEBUG,"skipped purge for %s",i->second->name);
1248                                 }
1249                         }
1250                 }
1251         }
1252         log(DEBUG,"completed channel purge, killed %d",purge);
1253 }
1254
1255
1256 char scratch[MAXBUF];
1257 char sparam[MAXBUF];
1258
1259 char* chanmodes(chanrec *chan)
1260 {
1261         if (!chan)
1262         {
1263                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1264                 strcpy(scratch,"");
1265                 return scratch;
1266         }
1267
1268         strcpy(scratch,"");
1269         strcpy(sparam,"");
1270         if (chan->noexternal)
1271         {
1272                 strlcat(scratch,"n",MAXMODES);
1273         }
1274         if (chan->topiclock)
1275         {
1276                 strlcat(scratch,"t",MAXMODES);
1277         }
1278         if (strcmp(chan->key,""))
1279         {
1280                 strlcat(scratch,"k",MAXMODES);
1281         }
1282         if (chan->limit)
1283         {
1284                 strlcat(scratch,"l",MAXMODES);
1285         }
1286         if (chan->inviteonly)
1287         {
1288                 strlcat(scratch,"i",MAXMODES);
1289         }
1290         if (chan->moderated)
1291         {
1292                 strlcat(scratch,"m",MAXMODES);
1293         }
1294         if (chan->secret)
1295         {
1296                 strlcat(scratch,"s",MAXMODES);
1297         }
1298         if (chan->c_private)
1299         {
1300                 strlcat(scratch,"p",MAXMODES);
1301         }
1302         if (strcmp(chan->key,""))
1303         {
1304                 strlcat(sparam," ",MAXBUF);
1305                 strlcat(sparam,chan->key,MAXBUF);
1306         }
1307         if (chan->limit)
1308         {
1309                 char foo[24];
1310                 sprintf(foo," %d",chan->limit);
1311                 strlcat(sparam,foo,MAXBUF);
1312         }
1313         if (strlen(chan->custom_modes))
1314         {
1315                 strlcat(scratch,chan->custom_modes,MAXMODES);
1316                 for (int z = 0; z < strlen(chan->custom_modes); z++)
1317                 {
1318                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1319                         if (extparam != "")
1320                         {
1321                                 strlcat(sparam," ",MAXBUF);
1322                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1323                         }
1324                 }
1325         }
1326         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1327         strlcat(scratch,sparam,MAXMODES);
1328         return scratch;
1329 }
1330
1331
1332 /* compile a userlist of a channel into a string, each nick seperated by
1333  * spaces and op, voice etc status shown as @ and + */
1334
1335 void userlist(userrec *user,chanrec *c)
1336 {
1337         if ((!c) || (!user))
1338         {
1339                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1340                 return;
1341         }
1342
1343         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1344         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1345         {
1346                 if (has_channel(i->second,c))
1347                 {
1348                         if (isnick(i->second->nick))
1349                         {
1350                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1351                                 {
1352                                         /* user is +i, and source not on the channel, does not show
1353                                          * nick in NAMES list */
1354                                         continue;
1355                                 }
1356                                 strlcat(list,cmode(i->second,c),MAXBUF);
1357                                 strlcat(list,i->second->nick,MAXBUF);
1358                                 strlcat(list," ",MAXBUF);
1359                                 if (strlen(list)>(480-NICKMAX))
1360                                 {
1361                                         /* list overflowed into
1362                                          * multiple numerics */
1363                                         WriteServ(user->fd,"%s",list);
1364                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1365                                 }
1366                         }
1367                 }
1368         }
1369         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1370         {
1371                 WriteServ(user->fd,"%s",list);
1372         }
1373 }
1374
1375 /* return a count of the users on a specific channel accounting for
1376  * invisible users who won't increase the count. e.g. for /LIST */
1377
1378 int usercount_i(chanrec *c)
1379 {
1380         int i = 0;
1381         int count = 0;
1382
1383         if (!c)
1384         {
1385                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1386                 return 0;
1387         }
1388
1389         strcpy(list,"");
1390         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1391         {
1392                 if (i->second)
1393                 {
1394                         if (has_channel(i->second,c))
1395                         {
1396                                 if (isnick(i->second->nick))
1397                                 {
1398                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1399                                         {
1400                                                 /* user is +i, and source not on the channel, does not show
1401                                                  * nick in NAMES list */
1402                                                 continue;
1403                                         }
1404                                         count++;
1405                                 }
1406                         }
1407                 }
1408         }
1409         log(DEBUG,"usercount_i: %s %d",c->name,count);
1410         return count;
1411 }
1412
1413
1414 int usercount(chanrec *c)
1415 {
1416         int i = 0;
1417         int count = 0;
1418
1419         if (!c)
1420         {
1421                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1422                 return 0;
1423         }
1424
1425         strcpy(list,"");
1426         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1427         {
1428                 if (i->second)
1429                 {
1430                         if (has_channel(i->second,c))
1431                         {
1432                                 if ((isnick(i->second->nick)) && (i->second->registered == 7))
1433                                 {
1434                                         count++;
1435                                 }
1436                         }
1437                 }
1438         }
1439         log(DEBUG,"usercount: %s %d",c->name,count);
1440         return count;
1441 }
1442
1443
1444 /* add a channel to a user, creating the record for it if needed and linking
1445  * it to the user record */
1446
1447 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1448 {
1449         if ((!user) || (!cn))
1450         {
1451                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1452                 return 0;
1453         }
1454
1455         int i = 0;
1456         chanrec* Ptr;
1457         int created = 0;
1458         char cname[MAXBUF];
1459
1460         strncpy(cname,cn,MAXBUF);
1461
1462         // we MUST declare this wherever we use FOREACH_RESULT
1463         int MOD_RESULT = 0;
1464
1465         if (strlen(cname) > CHANMAX-1)
1466         {
1467                 cname[CHANMAX-1] = '\0';
1468         }
1469
1470         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1471
1472         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1473         {
1474                 return NULL; // already on the channel!
1475         }
1476
1477
1478         if (!FindChan(cname))
1479         {
1480                 int MOD_RESULT = 0;
1481                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1482                 if (MOD_RESULT == 1) {
1483                         return NULL;
1484                 }
1485
1486                 /* create a new one */
1487                 log(DEBUG,"add_channel: creating: %s",cname);
1488                 {
1489                         chanlist[cname] = new chanrec();
1490
1491                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1492                         chanlist[cname]->topiclock = 1;
1493                         chanlist[cname]->noexternal = 1;
1494                         chanlist[cname]->created = TIME;
1495                         strcpy(chanlist[cname]->topic, "");
1496                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1497                         chanlist[cname]->topicset = 0;
1498                         Ptr = chanlist[cname];
1499                         log(DEBUG,"add_channel: created: %s",cname);
1500                         /* set created to 2 to indicate user
1501                          * is the first in the channel
1502                          * and should be given ops */
1503                         created = 2;
1504                 }
1505         }
1506         else
1507         {
1508                 /* channel exists, just fish out a pointer to its struct */
1509                 Ptr = FindChan(cname);
1510                 if (Ptr)
1511                 {
1512                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1513
1514                         // the override flag allows us to bypass channel modes
1515                         // and bans (used by servers)
1516                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1517                         {
1518                                 log(DEBUG,"Not overriding...");
1519                                 int MOD_RESULT = 0;
1520                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1521                                 if (MOD_RESULT == 1) {
1522                                         return NULL;
1523                                 }
1524                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1525
1526                                 if (!MOD_RESULT)
1527                                 {
1528                                         log(DEBUG,"add_channel: checking key, invite, etc");
1529                                         if (strcmp(Ptr->key,""))
1530                                         {
1531                                                 log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1532                                                 if (!key)
1533                                                 {
1534                                                         log(DEBUG,"add_channel: no key given in JOIN");
1535                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1536                                                         return NULL;
1537                                                 }
1538                                                 else
1539                                                 {
1540                                                         log(DEBUG,"key at %p is %s",key,key);
1541                                                         if (strcasecmp(key,Ptr->key))
1542                                                         {
1543                                                                 log(DEBUG,"add_channel: bad key given in JOIN");
1544                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1545                                                                 return NULL;
1546                                                         }
1547                                                 }
1548                                         }
1549                                         log(DEBUG,"add_channel: no key");
1550
1551                                         if (Ptr->inviteonly)
1552                                         {
1553                                                 log(DEBUG,"add_channel: channel is +i");
1554                                                 if (user->IsInvited(Ptr->name))
1555                                                 {
1556                                                         /* user was invited to channel */
1557                                                         /* there may be an optional channel NOTICE here */
1558                                                 }
1559                                                 else
1560                                                 {
1561                                                         WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1562                                                         return NULL;
1563                                                 }
1564                                         }
1565                                         log(DEBUG,"add_channel: channel is not +i");
1566
1567                                         if (Ptr->limit)
1568                                         {
1569                                                 if (usercount(Ptr) == Ptr->limit)
1570                                                 {
1571                                                         WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1572                                                         return NULL;
1573                                                 }
1574                                         }
1575
1576                                         log(DEBUG,"add_channel: about to walk banlist");
1577
1578                                         /* check user against the channel banlist */
1579                                         if (Ptr)
1580                                         {
1581                                                 if (Ptr->bans.size())
1582                                                 {
1583                                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1584                                                         {
1585                                                                 if (match(user->GetFullHost(),i->data))
1586                                                                 {
1587                                                                         WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1588                                                                         return NULL;
1589                                                                 }
1590                                                         }
1591                                                 }
1592                                         }
1593
1594                                         log(DEBUG,"add_channel: bans checked");
1595
1596                                 }
1597
1598
1599                                 if ((Ptr) && (user))
1600                                 {
1601                                         user->RemoveInvite(Ptr->name);
1602                                 }
1603
1604                                 log(DEBUG,"add_channel: invites removed");
1605
1606                         }
1607                         else
1608                         {
1609                                 log(DEBUG,"Overridden checks");
1610                         }
1611
1612
1613                 }
1614                 created = 1;
1615         }
1616
1617         log(DEBUG,"Passed channel checks");
1618
1619         for (int i =0; i != MAXCHANS; i++)
1620         {
1621                 log(DEBUG,"Check location %d",i);
1622                 if (user->chans[i].channel == NULL)
1623                 {
1624                         log(DEBUG,"Adding into their channel list at location %d",i);
1625
1626                         if (created == 2)
1627                         {
1628                                 /* first user in is given ops */
1629                                 user->chans[i].uc_modes = UCMODE_OP;
1630                         }
1631                         else
1632                         {
1633                                 user->chans[i].uc_modes = 0;
1634                         }
1635                         user->chans[i].channel = Ptr;
1636                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1637
1638                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1639                         {
1640                                 // use the stamdard J token with no privilages.
1641                                 char buffer[MAXBUF];
1642                                 if (created == 2)
1643                                 {
1644                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1645                                 }
1646                                 else
1647                                 {
1648                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1649                                 }
1650                                 NetSendToAll(buffer);
1651                         }
1652
1653                         log(DEBUG,"Sent JOIN to client");
1654
1655                         if (Ptr->topicset)
1656                         {
1657                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1658                                 WriteServ(user->fd,"333 %s %s %s %d", user->nick, Ptr->name, Ptr->setby, Ptr->topicset);
1659                         }
1660                         userlist(user,Ptr);
1661                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1662                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1663                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1664                         FOREACH_MOD OnUserJoin(user,Ptr);
1665                         return Ptr;
1666                 }
1667         }
1668         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1669         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1670         return NULL;
1671 }
1672
1673 /* remove a channel from a users record, and remove the record from memory
1674  * if the channel has become empty */
1675
1676 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1677 {
1678         if ((!user) || (!cname))
1679         {
1680                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1681                 return NULL;
1682         }
1683
1684         chanrec* Ptr;
1685         int created = 0;
1686
1687         if ((!cname) || (!user))
1688         {
1689                 return NULL;
1690         }
1691
1692         Ptr = FindChan(cname);
1693
1694         if (!Ptr)
1695         {
1696                 return NULL;
1697         }
1698
1699         FOREACH_MOD OnUserPart(user,Ptr);
1700         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1701
1702         for (int i =0; i != MAXCHANS; i++)
1703         {
1704                 /* zap it from the channel list of the user */
1705                 if (user->chans[i].channel == Ptr)
1706                 {
1707                         if (reason)
1708                         {
1709                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1710
1711                                 if (!local)
1712                                 {
1713                                         char buffer[MAXBUF];
1714                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1715                                         NetSendToAll(buffer);
1716                                 }
1717
1718
1719                         }
1720                         else
1721                         {
1722                                 if (!local)
1723                                 {
1724                                         char buffer[MAXBUF];
1725                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1726                                         NetSendToAll(buffer);
1727                                 }
1728
1729                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1730                         }
1731                         user->chans[i].uc_modes = 0;
1732                         user->chans[i].channel = NULL;
1733                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1734                         break;
1735                 }
1736         }
1737
1738         /* if there are no users left on the channel */
1739         if (!usercount(Ptr))
1740         {
1741                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1742
1743                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1744
1745                 /* kill the record */
1746                 if (iter != chanlist.end())
1747                 {
1748                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1749                         if (iter->second) delete iter->second;
1750                         chanlist.erase(iter);
1751                 }
1752         }
1753 }
1754
1755
1756 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1757 {
1758         if ((!src) || (!user) || (!Ptr) || (!reason))
1759         {
1760                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1761                 return;
1762         }
1763
1764         int i = 0;
1765         int created = 0;
1766
1767         if ((!Ptr) || (!user) || (!src))
1768         {
1769                 return;
1770         }
1771
1772         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1773
1774         if (!has_channel(user,Ptr))
1775         {
1776                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1777                 return;
1778         }
1779
1780         int MOD_RESULT = 0;
1781         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1782
1783         if (MOD_RESULT == ACR_DENY)
1784                 return;
1785
1786         if (MOD_RESULT == ACR_DEFAULT)
1787         {
1788                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1789                 {
1790                         if (cstatus(src,Ptr) == STATUS_HOP)
1791                         {
1792                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1793                         }
1794                         else
1795                         {
1796                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1797                         }
1798
1799                         return;
1800                 }
1801         }
1802
1803         for (int i =0; i != MAXCHANS; i++)
1804         {
1805                 /* zap it from the channel list of the user */
1806                 if (user->chans[i].channel)
1807                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1808                 {
1809                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1810                         user->chans[i].uc_modes = 0;
1811                         user->chans[i].channel = NULL;
1812                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1813                         break;
1814                 }
1815         }
1816
1817         /* if there are no users left on the channel */
1818         if (!usercount(Ptr))
1819         {
1820                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1821
1822                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1823
1824                 /* kill the record */
1825                 if (iter != chanlist.end())
1826                 {
1827                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1828                         if (iter->second) delete iter->second;
1829                         chanlist.erase(iter);
1830                 }
1831         }
1832 }
1833
1834
1835
1836
1837 /* This function pokes and hacks at a parameter list like the following:
1838  *
1839  * PART #winbot,#darkgalaxy :m00!
1840  *
1841  * to turn it into a series of individual calls like this:
1842  *
1843  * PART #winbot :m00!
1844  * PART #darkgalaxy :m00!
1845  *
1846  * The seperate calls are sent to a callback function provided by the caller
1847  * (the caller will usually call itself recursively). The callback function
1848  * must be a command handler. Calling this function on a line with no list causes
1849  * no action to be taken. You must provide a starting and ending parameter number
1850  * where the range of the list can be found, useful if you have a terminating
1851  * parameter as above which is actually not part of the list, or parameters
1852  * before the actual list as well. This code is used by many functions which
1853  * can function as "one to list" (see the RFC) */
1854
1855 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
1856 {
1857         char plist[MAXBUF];
1858         char *param;
1859         char *pars[32];
1860         char blog[32][MAXBUF];
1861         char blog2[32][MAXBUF];
1862         int i = 0, j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
1863         char keystr[MAXBUF];
1864         char moo[MAXBUF];
1865
1866         for (int i = 0; i <32; i++)
1867                 strcpy(blog[i],"");
1868
1869         for (int i = 0; i <32; i++)
1870                 strcpy(blog2[i],"");
1871
1872         strcpy(moo,"");
1873         for (int i = 0; i <10; i++)
1874         {
1875                 if (!parameters[i])
1876                 {
1877                         parameters[i] = moo;
1878                 }
1879         }
1880         if (joins)
1881         {
1882                 if (pcnt > 1) /* we have a key to copy */
1883                 {
1884                         strlcpy(keystr,parameters[1],MAXBUF);
1885                 }
1886         }
1887
1888         if (!parameters[start])
1889         {
1890                 return 0;
1891         }
1892         if (!strchr(parameters[start],','))
1893         {
1894                 return 0;
1895         }
1896         strcpy(plist,"");
1897         for (int i = start; i <= end; i++)
1898         {
1899                 if (parameters[i])
1900                 {
1901                         strlcat(plist,parameters[i],MAXBUF);
1902                 }
1903         }
1904
1905         j = 0;
1906         param = plist;
1907
1908         t = strlen(plist);
1909         for (int i = 0; i < t; i++)
1910         {
1911                 if (plist[i] == ',')
1912                 {
1913                         plist[i] = '\0';
1914                         strlcpy(blog[j++],param,MAXBUF);
1915                         param = plist+i+1;
1916                         if (j>20)
1917                         {
1918                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
1919                                 return 1;
1920                         }
1921                 }
1922         }
1923         strlcpy(blog[j++],param,MAXBUF);
1924         total = j;
1925
1926         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
1927         {
1928                 strcat(keystr,",");
1929         }
1930
1931         if ((joins) && (keystr))
1932         {
1933                 if (strchr(keystr,','))
1934                 {
1935                         j = 0;
1936                         param = keystr;
1937                         t2 = strlen(keystr);
1938                         for (int i = 0; i < t2; i++)
1939                         {
1940                                 if (keystr[i] == ',')
1941                                 {
1942                                         keystr[i] = '\0';
1943                                         strlcpy(blog2[j++],param,MAXBUF);
1944                                         param = keystr+i+1;
1945                                 }
1946                         }
1947                         strlcpy(blog2[j++],param,MAXBUF);
1948                         total2 = j;
1949                 }
1950         }
1951
1952         for (j = 0; j < total; j++)
1953         {
1954                 if (blog[j])
1955                 {
1956                         pars[0] = blog[j];
1957                 }
1958                 for (q = end; q < pcnt-1; q++)
1959                 {
1960                         if (parameters[q+1])
1961                         {
1962                                 pars[q-end+1] = parameters[q+1];
1963                         }
1964                 }
1965                 if ((joins) && (parameters[1]))
1966                 {
1967                         if (pcnt > 1)
1968                         {
1969                                 pars[1] = blog2[j];
1970                         }
1971                         else
1972                         {
1973                                 pars[1] = NULL;
1974                         }
1975                 }
1976                 /* repeatedly call the function with the hacked parameter list */
1977                 if ((joins) && (pcnt > 1))
1978                 {
1979                         if (pars[1])
1980                         {
1981                                 // pars[1] already set up and containing key from blog2[j]
1982                                 fn(pars,2,u);
1983                         }
1984                         else
1985                         {
1986                                 pars[1] = parameters[1];
1987                                 fn(pars,2,u);
1988                         }
1989                 }
1990                 else
1991                 {
1992                         fn(pars,pcnt-(end-start),u);
1993                 }
1994         }
1995
1996         return 1;
1997 }
1998
1999
2000
2001 void kill_link(userrec *user,const char* r)
2002 {
2003         user_hash::iterator iter = clientlist.find(user->nick);
2004
2005         char reason[MAXBUF];
2006
2007         strncpy(reason,r,MAXBUF);
2008
2009         if (strlen(reason)>MAXQUIT)
2010         {
2011                 reason[MAXQUIT-1] = '\0';
2012         }
2013
2014         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2015         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2016         log(DEBUG,"closing fd %d",user->fd);
2017
2018         /* bugfix, cant close() a nonblocking socket (sux!) */
2019         if (user->registered == 7) {
2020                 FOREACH_MOD OnUserQuit(user);
2021                 WriteCommonExcept(user,"QUIT :%s",reason);
2022
2023                 // Q token must go to ALL servers!!!
2024                 char buffer[MAXBUF];
2025                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2026                 NetSendToAll(buffer);
2027         }
2028
2029         /* push the socket on a stack of sockets due to be closed at the next opportunity
2030          * 'Client exited' is an exception to this as it means the client side has already
2031          * closed the socket, we don't need to do it.
2032          */
2033         fd_reap.push_back(user->fd);
2034
2035         bool do_purge = false;
2036
2037         if (user->registered == 7) {
2038                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2039                 AddWhoWas(user);
2040         }
2041
2042         if (iter != clientlist.end())
2043         {
2044                 log(DEBUG,"deleting user hash value %d",iter->second);
2045                 if ((iter->second) && (user->registered == 7)) {
2046                         if (iter->second) delete iter->second;
2047                 }
2048                 clientlist.erase(iter);
2049         }
2050
2051         if (user->registered == 7) {
2052                 purge_empty_chans();
2053         }
2054         user = NULL;
2055 }
2056
2057 void kill_link_silent(userrec *user,const char* r)
2058 {
2059         user_hash::iterator iter = clientlist.find(user->nick);
2060
2061         char reason[MAXBUF];
2062
2063         strncpy(reason,r,MAXBUF);
2064
2065         if (strlen(reason)>MAXQUIT)
2066         {
2067                 reason[MAXQUIT-1] = '\0';
2068         }
2069
2070         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2071         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2072         log(DEBUG,"closing fd %d",user->fd);
2073
2074         /* bugfix, cant close() a nonblocking socket (sux!) */
2075         if (user->registered == 7) {
2076                 FOREACH_MOD OnUserQuit(user);
2077                 WriteCommonExcept(user,"QUIT :%s",reason);
2078
2079                 // Q token must go to ALL servers!!!
2080                 char buffer[MAXBUF];
2081                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2082                 NetSendToAll(buffer);
2083         }
2084
2085         /* push the socket on a stack of sockets due to be closed at the next opportunity
2086          * 'Client exited' is an exception to this as it means the client side has already
2087          * closed the socket, we don't need to do it.
2088          */
2089         fd_reap.push_back(user->fd);
2090
2091         bool do_purge = false;
2092
2093         if (iter != clientlist.end())
2094         {
2095                 log(DEBUG,"deleting user hash value %d",iter->second);
2096                 if ((iter->second) && (user->registered == 7)) {
2097                         if (iter->second) delete iter->second;
2098                 }
2099                 clientlist.erase(iter);
2100         }
2101
2102         if (user->registered == 7) {
2103                 purge_empty_chans();
2104         }
2105 }
2106
2107
2108
2109 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2110
2111 char* Passwd(userrec *user)
2112 {
2113         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2114         {
2115                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2116                 {
2117                         return i->pass;
2118                 }
2119         }
2120         return "";
2121 }
2122
2123 bool IsDenied(userrec *user)
2124 {
2125         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2126         {
2127                 if (match(user->host,i->host) && (i->type == CC_DENY))
2128                 {
2129                         return true;
2130                 }
2131         }
2132         return false;
2133 }
2134
2135
2136
2137
2138 /* sends out an error notice to all connected clients (not to be used
2139  * lightly!) */
2140
2141 void send_error(char *s)
2142 {
2143         log(DEBUG,"send_error: %s",s);
2144         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2145         {
2146                 if (isnick(i->second->nick))
2147                 {
2148                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2149                 }
2150                 else
2151                 {
2152                         // fix - unregistered connections receive ERROR, not NOTICE
2153                         Write(i->second->fd,"ERROR :%s",s);
2154                 }
2155         }
2156 }
2157
2158 void Error(int status)
2159 {
2160         signal (SIGALRM, SIG_IGN);
2161         signal (SIGPIPE, SIG_IGN);
2162         signal (SIGTERM, SIG_IGN);
2163         signal (SIGABRT, SIG_IGN);
2164         signal (SIGSEGV, SIG_IGN);
2165         signal (SIGURG, SIG_IGN);
2166         signal (SIGKILL, SIG_IGN);
2167         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2168         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2169         Exit(status);
2170 }
2171
2172
2173 int main(int argc, char **argv)
2174 {
2175         Start();
2176         srand(time(NULL));
2177         log(DEBUG,"*** InspIRCd starting up!");
2178         if (!FileExists(CONFIG_FILE))
2179         {
2180                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2181                 log(DEFAULT,"main: no config");
2182                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2183                 Exit(ERROR);
2184         }
2185         if (argc > 1) {
2186                 for (int i = 1; i < argc; i++)
2187                 {
2188                         if (!strcmp(argv[i],"-nofork")) {
2189                                 nofork = true;
2190                         }
2191                         if (!strcmp(argv[i],"-wait")) {
2192                                 sleep(6);
2193                         }
2194                         if (!strcmp(argv[i],"-nolimit")) {
2195                                 unlimitcore = true;
2196                         }
2197                 }
2198         }
2199         strlcpy(MyExecutable,argv[0],MAXBUF);
2200
2201         if (InspIRCd() == ERROR)
2202         {
2203                 log(DEFAULT,"main: daemon function bailed");
2204                 printf("ERROR: could not initialise. Shutting down.\n");
2205                 Exit(ERROR);
2206         }
2207         Exit(TRUE);
2208         return 0;
2209 }
2210
2211 template<typename T> inline string ConvToStr(const T &in)
2212 {
2213         stringstream tmp;
2214         if (!(tmp << in)) return string();
2215         return tmp.str();
2216 }
2217
2218 /* re-allocates a nick in the user_hash after they change nicknames,
2219  * returns a pointer to the new user as it may have moved */
2220
2221 userrec* ReHashNick(char* Old, char* New)
2222 {
2223         user_hash::iterator newnick;
2224         user_hash::iterator oldnick = clientlist.find(Old);
2225
2226         log(DEBUG,"ReHashNick: %s %s",Old,New);
2227
2228         if (!strcasecmp(Old,New))
2229         {
2230                 log(DEBUG,"old nick is new nick, skipping");
2231                 return oldnick->second;
2232         }
2233
2234         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2235
2236         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2237
2238         clientlist[New] = new userrec();
2239         clientlist[New] = oldnick->second;
2240         clientlist.erase(oldnick);
2241
2242         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2243
2244         return clientlist[New];
2245 }
2246
2247 /* adds or updates an entry in the whowas list */
2248 void AddWhoWas(userrec* u)
2249 {
2250         user_hash::iterator iter = whowas.find(u->nick);
2251         userrec *a = new userrec();
2252         strlcpy(a->nick,u->nick,NICKMAX);
2253         strlcpy(a->ident,u->ident,64);
2254         strlcpy(a->dhost,u->dhost,256);
2255         strlcpy(a->host,u->host,256);
2256         strlcpy(a->fullname,u->fullname,128);
2257         strlcpy(a->server,u->server,256);
2258         a->signon = u->signon;
2259
2260         /* MAX_WHOWAS:   max number of /WHOWAS items
2261          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2262          *               can be replaced by a newer one
2263          */
2264
2265         if (iter == whowas.end())
2266         {
2267                 if (whowas.size() == WHOWAS_MAX)
2268                 {
2269                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2270                         {
2271                                 // 3600 seconds in an hour ;)
2272                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2273                                 {
2274                                         if (i->second) delete i->second;
2275                                         i->second = a;
2276                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2277                                         return;
2278                                 }
2279                         }
2280                 }
2281                 else
2282                 {
2283                         log(DEBUG,"added fresh WHOWAS entry");
2284                         whowas[a->nick] = a;
2285                 }
2286         }
2287         else
2288         {
2289                 log(DEBUG,"updated WHOWAS entry");
2290                 if (iter->second) delete iter->second;
2291                 iter->second = a;
2292         }
2293 }
2294
2295
2296 /* add a client connection to the sockets list */
2297 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2298 {
2299         int i;
2300         int blocking = 1;
2301         char resolved[MAXBUF];
2302         string tempnick;
2303         char tn2[MAXBUF];
2304         user_hash::iterator iter;
2305
2306         tempnick = ConvToStr(socket) + "-unknown";
2307         sprintf(tn2,"%d-unknown",socket);
2308
2309         iter = clientlist.find(tempnick);
2310
2311         if (iter != clientlist.end()) return;
2312
2313         /*
2314          * It is OK to access the value here this way since we know
2315          * it exists, we just created it above.
2316          *
2317          * At NO other time should you access a value in a map or a
2318          * hash_map this way.
2319          */
2320         clientlist[tempnick] = new userrec();
2321
2322         NonBlocking(socket);
2323         log(DEBUG,"AddClient: %d %s %d %s",socket,host,port,ip);
2324
2325         clientlist[tempnick]->fd = socket;
2326         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2327         strncpy(clientlist[tempnick]->host, host,160);
2328         strncpy(clientlist[tempnick]->dhost, host,160);
2329         strncpy(clientlist[tempnick]->server, ServerName,256);
2330         strncpy(clientlist[tempnick]->ident, "unknown",9);
2331         clientlist[tempnick]->registered = 0;
2332         clientlist[tempnick]->signon = TIME+dns_timeout;
2333         clientlist[tempnick]->lastping = 1;
2334         clientlist[tempnick]->port = port;
2335         strncpy(clientlist[tempnick]->ip,ip,32);
2336
2337         // set the registration timeout for this user
2338         unsigned long class_regtimeout = 90;
2339         int class_flood = 0;
2340
2341         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2342         {
2343                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2344                 {
2345                         class_regtimeout = (unsigned long)i->registration_timeout;
2346                         class_flood = i->flood;
2347                         clientlist[tempnick]->pingmax = i->pingtime;
2348                         break;
2349                 }
2350         }
2351
2352         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2353         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2354         clientlist[tempnick]->flood = class_flood;
2355
2356         for (int i = 0; i < MAXCHANS; i++)
2357         {
2358                 clientlist[tempnick]->chans[i].channel = NULL;
2359                 clientlist[tempnick]->chans[i].uc_modes = 0;
2360         }
2361
2362         if (clientlist.size() == MAXCLIENTS)
2363                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2364
2365
2366         char* e = matches_exception(ip);
2367         if (!e)
2368         {
2369                 char* r = matches_zline(ip);
2370                 if (r)
2371                 {
2372                         char reason[MAXBUF];
2373                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2374                         kill_link(clientlist[tempnick],reason);
2375                 }
2376         }
2377 }
2378
2379 // this function counts all users connected, wether they are registered or NOT.
2380 int usercnt(void)
2381 {
2382         return clientlist.size();
2383 }
2384
2385 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2386 int registered_usercount(void)
2387 {
2388         int c = 0;
2389         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2390         {
2391                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2392         }
2393         return c;
2394 }
2395
2396 int usercount_invisible(void)
2397 {
2398         int c = 0;
2399
2400         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2401         {
2402                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2403         }
2404         return c;
2405 }
2406
2407 int usercount_opers(void)
2408 {
2409         int c = 0;
2410
2411         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2412         {
2413                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2414         }
2415         return c;
2416 }
2417
2418 int usercount_unknown(void)
2419 {
2420         int c = 0;
2421
2422         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2423         {
2424                 if ((i->second->fd) && (i->second->registered != 7))
2425                         c++;
2426         }
2427         return c;
2428 }
2429
2430 long chancount(void)
2431 {
2432         return chanlist.size();
2433 }
2434
2435 long count_servs(void)
2436 {
2437         int c = 0;
2438         //for (int j = 0; j < 255; j++)
2439         //{
2440         //      if (servers[j] != NULL)
2441         //              c++;
2442         //}
2443         return c;
2444 }
2445
2446 long servercount(void)
2447 {
2448         return count_servs()+1;
2449 }
2450
2451 long local_count()
2452 {
2453         int c = 0;
2454         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2455         {
2456                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2457         }
2458         return c;
2459 }
2460
2461
2462 void ShowMOTD(userrec *user)
2463 {
2464         std::string WholeMOTD = "";
2465         if (!MOTD.size())
2466         {
2467                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2468                 return;
2469         }
2470         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2471         for (int i = 0; i != MOTD.size(); i++)
2472         {
2473                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2474         }
2475         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2476         // only one write operation
2477         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2478
2479 }
2480
2481 void ShowRULES(userrec *user)
2482 {
2483         if (!RULES.size())
2484         {
2485                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2486                 return;
2487         }
2488         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2489         for (int i = 0; i != RULES.size(); i++)
2490         {
2491                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2492         }
2493         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2494 }
2495
2496 /* shows the message of the day, and any other on-logon stuff */
2497 void FullConnectUser(userrec* user)
2498 {
2499         user->registered = 7;
2500         user->idle_lastmsg = TIME;
2501         log(DEBUG,"ConnectUser: %s",user->nick);
2502
2503         if (strcmp(Passwd(user),"") && (!user->haspassed))
2504         {
2505                 kill_link(user,"Invalid password");
2506                 return;
2507         }
2508         if (IsDenied(user))
2509         {
2510                 kill_link(user,"Unauthorised connection");
2511                 return;
2512         }
2513
2514         char match_against[MAXBUF];
2515         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2516         char* e = matches_exception(match_against);
2517         if (!e)
2518         {
2519                 char* r = matches_gline(match_against);
2520                 if (r)
2521                 {
2522                         char reason[MAXBUF];
2523                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2524                         kill_link_silent(user,reason);
2525                         return;
2526                 }
2527                 r = matches_kline(user->host);
2528                 if (r)
2529                 {
2530                         char reason[MAXBUF];
2531                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2532                         kill_link_silent(user,reason);
2533                         return;
2534                 }
2535         }
2536
2537         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2538         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2539         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2540         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2541         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2542         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2543         std::stringstream v;
2544         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2545         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2546         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2547         v << std::string(Network);
2548         std::string data005 = v.str();
2549         FOREACH_MOD On005Numeric(data005);
2550         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2551         // so i'd better split it :)
2552         std::stringstream out(data005);
2553         std::string token = "";
2554         std::string line5 = "";
2555         int token_counter = 0;
2556         while (!out.eof())
2557         {
2558                 out >> token;
2559                 line5 = line5 + token + " ";
2560                 token_counter++;
2561                 if ((token_counter >= 13) || (out.eof() == true))
2562                 {
2563                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2564                         line5 = "";
2565                         token_counter = 0;
2566                 }
2567         }
2568         ShowMOTD(user);
2569         FOREACH_MOD OnUserConnect(user);
2570         WriteOpers("*** Client connecting on port %d: %s!%s@%s [%s]",user->port,user->nick,user->ident,user->host,user->ip);
2571
2572         char buffer[MAXBUF];
2573         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);
2574         NetSendToAll(buffer);
2575 }
2576
2577 /* shows the message of the day, and any other on-logon stuff */
2578 void ConnectUser(userrec *user)
2579 {
2580         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2581         if ((user->dns_done) && (user->registered >= 3))
2582         {
2583                 FullConnectUser(user);
2584         }
2585 }
2586
2587 void handle_version(char **parameters, int pcnt, userrec *user)
2588 {
2589         char Revision[] = "$Revision$";
2590
2591         char *s1 = Revision;
2592         char *savept;
2593         char *v1 = strtok_r(s1," ",&savept);
2594         s1 = savept;
2595         char *v2 = strtok_r(s1," ",&savept);
2596         s1 = savept;
2597
2598         WriteServ(user->fd,"351 %s :%s Rev. %s %s :%s (O=%d)",user->nick,VERSION,v2,ServerName,SYSTEM,OPTIMISATION);
2599 }
2600
2601
2602 // calls a handler function for a command
2603
2604 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2605 {
2606                 for (int i = 0; i < cmdlist.size(); i++)
2607                 {
2608                         if (!strcasecmp(cmdlist[i].command,commandname))
2609                         {
2610                                 if (cmdlist[i].handler_function)
2611                                 {
2612                                         if (pcnt>=cmdlist[i].min_params)
2613                                         {
2614                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2615                                                 {
2616                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2617                                                 }
2618                                         }
2619                                 }
2620                         }
2621                 }
2622 }
2623
2624 void DoSplitEveryone()
2625 {
2626         bool go_again = true;
2627         while (go_again)
2628         {
2629                 go_again = false;
2630                 for (int i = 0; i < 32; i++)
2631                 {
2632                         if (me[i] != NULL)
2633                         {
2634                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2635                                 {
2636                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2637                                         {
2638                                                 j->routes.clear();
2639                                                 j->CloseConnection();
2640                                                 me[i]->connectors.erase(j);
2641                                                 go_again = true;
2642                                                 break;
2643                                         }
2644                                 }
2645                         }
2646                 }
2647         }
2648         log(DEBUG,"Removed server. Will remove clients...");
2649         // iterate through the userlist and remove all users on this server.
2650         // because we're dealing with a mesh, we dont have to deal with anything
2651         // "down-route" from this server (nice huh)
2652         go_again = true;
2653         char reason[MAXBUF];
2654         while (go_again)
2655         {
2656                 go_again = false;
2657                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2658                 {
2659                         if (strcasecmp(u->second->server,ServerName))
2660                         {
2661                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2662                                 kill_link(u->second,reason);
2663                                 go_again = true;
2664                                 break;
2665                         }
2666                 }
2667         }
2668 }
2669
2670
2671
2672 char islast(const char* s)
2673 {
2674         char c = '`';
2675         for (int j = 0; j < 32; j++)
2676         {
2677                 if (me[j] != NULL)
2678                 {
2679                         for (int k = 0; k < me[j]->connectors.size(); k++)
2680                         {
2681                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2682                                 {
2683                                         c = '|';
2684                                 }
2685                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2686                                 {
2687                                         c = '`';
2688                                 }
2689                         }
2690                 }
2691         }
2692         return c;
2693 }
2694
2695 long map_count(const char* s)
2696 {
2697         int c = 0;
2698         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2699         {
2700                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2701         }
2702         return c;
2703 }
2704
2705
2706 void force_nickchange(userrec* user,const char* newnick)
2707 {
2708         char nick[MAXBUF];
2709         int MOD_RESULT = 0;
2710
2711         strcpy(nick,"");
2712
2713         FOREACH_RESULT(OnUserPreNick(user,newnick));
2714         if (MOD_RESULT) {
2715                 kill_link(user,"Nickname collision");
2716                 return;
2717         }
2718         if (matches_qline(newnick))
2719         {
2720                 kill_link(user,"Nickname collision");
2721                 return;
2722         }
2723
2724         if (user)
2725         {
2726                 if (newnick)
2727                 {
2728                         strncpy(nick,newnick,MAXBUF);
2729                 }
2730                 if (user->registered == 7)
2731                 {
2732                         char* pars[1];
2733                         pars[0] = nick;
2734                         handle_nick(pars,1,user);
2735                 }
2736         }
2737 }
2738
2739
2740 int process_parameters(char **command_p,char *parameters)
2741 {
2742         int i = 0;
2743         int j = 0;
2744         int q = 0;
2745         q = strlen(parameters);
2746         if (!q)
2747         {
2748                 /* no parameters, command_p invalid! */
2749                 return 0;
2750         }
2751         if (parameters[0] == ':')
2752         {
2753                 command_p[0] = parameters+1;
2754                 return 1;
2755         }
2756         if (q)
2757         {
2758                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
2759                 {
2760                         /* only one parameter */
2761                         command_p[0] = parameters;
2762                         if (parameters[0] == ':')
2763                         {
2764                                 if (strchr(parameters,' ') != NULL)
2765                                 {
2766                                         command_p[0]++;
2767                                 }
2768                         }
2769                         return 1;
2770                 }
2771         }
2772         command_p[j++] = parameters;
2773         for (int i = 0; i <= q; i++)
2774         {
2775                 if (parameters[i] == ' ')
2776                 {
2777                         command_p[j++] = parameters+i+1;
2778                         parameters[i] = '\0';
2779                         if (command_p[j-1][0] == ':')
2780                         {
2781                                 *command_p[j-1]++; /* remove dodgy ":" */
2782                                 break;
2783                                 /* parameter like this marks end of the sequence */
2784                         }
2785                 }
2786         }
2787         return j; /* returns total number of items in the list */
2788 }
2789
2790 void process_command(userrec *user, char* cmd)
2791 {
2792         char *parameters;
2793         char *command;
2794         char *command_p[127];
2795         char p[MAXBUF], temp[MAXBUF];
2796         int i, j, items, cmd_found;
2797
2798         for (int i = 0; i < 127; i++)
2799                 command_p[i] = NULL;
2800
2801         if (!user)
2802         {
2803                 return;
2804         }
2805         if (!cmd)
2806         {
2807                 return;
2808         }
2809         if (!strcmp(cmd,""))
2810         {
2811                 return;
2812         }
2813
2814         int total_params = 0;
2815         if (strlen(cmd)>2)
2816         {
2817                 for (int q = 0; q < strlen(cmd)-1; q++)
2818                 {
2819                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
2820                         {
2821                                 total_params++;
2822                                 // found a 'trailing', we dont count them after this.
2823                                 break;
2824                         }
2825                         if (cmd[q] == ' ')
2826                                 total_params++;
2827                 }
2828         }
2829
2830         // another phidjit bug...
2831         if (total_params > 126)
2832         {
2833                 //kill_link(user,"Protocol violation (1)");
2834                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2835                 return;
2836         }
2837
2838         strlcpy(temp,cmd,MAXBUF);
2839
2840         std::string tmp = cmd;
2841         for (int i = 0; i <= MODCOUNT; i++)
2842         {
2843                 std::string oldtmp = tmp;
2844                 modules[i]->OnServerRaw(tmp,true,user);
2845                 if (oldtmp != tmp)
2846                 {
2847                         log(DEBUG,"A Module changed the input string!");
2848                         log(DEBUG,"New string: %s",tmp.c_str());
2849                         log(DEBUG,"Old string: %s",oldtmp.c_str());
2850                         break;
2851                 }
2852         }
2853         strlcpy(cmd,tmp.c_str(),MAXBUF);
2854         strlcpy(temp,cmd,MAXBUF);
2855
2856         if (!strchr(cmd,' '))
2857         {
2858                 /* no parameters, lets skip the formalities and not chop up
2859                  * the string */
2860                 log(DEBUG,"About to preprocess command with no params");
2861                 items = 0;
2862                 command_p[0] = NULL;
2863                 parameters = NULL;
2864                 for (int i = 0; i <= strlen(cmd); i++)
2865                 {
2866                         cmd[i] = toupper(cmd[i]);
2867                 }
2868                 log(DEBUG,"Preprocess done length=%d",strlen(cmd));
2869                 command = cmd;
2870         }
2871         else
2872         {
2873                 strcpy(cmd,"");
2874                 j = 0;
2875                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
2876                 for (int i = 0; i < strlen(temp); i++)
2877                 {
2878                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
2879                         {
2880                                 cmd[j++] = temp[i];
2881                                 cmd[j] = 0;
2882                         }
2883                 }
2884                 /* split the full string into a command plus parameters */
2885                 parameters = p;
2886                 strcpy(p," ");
2887                 command = cmd;
2888                 if (strchr(cmd,' '))
2889                 {
2890                         for (int i = 0; i <= strlen(cmd); i++)
2891                         {
2892                                 /* capitalise the command ONLY, leave params intact */
2893                                 cmd[i] = toupper(cmd[i]);
2894                                 /* are we nearly there yet?! :P */
2895                                 if (cmd[i] == ' ')
2896                                 {
2897                                         command = cmd;
2898                                         parameters = cmd+i+1;
2899                                         cmd[i] = '\0';
2900                                         break;
2901                                 }
2902                         }
2903                 }
2904                 else
2905                 {
2906                         for (int i = 0; i <= strlen(cmd); i++)
2907                         {
2908                                 cmd[i] = toupper(cmd[i]);
2909                         }
2910                 }
2911
2912         }
2913         cmd_found = 0;
2914
2915         if (strlen(command)>MAXCOMMAND)
2916         {
2917                 //kill_link(user,"Protocol violation (2)");
2918                 WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2919                 return;
2920         }
2921
2922         for (int x = 0; x < strlen(command); x++)
2923         {
2924                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
2925                 {
2926                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
2927                         {
2928                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
2929                                 {
2930                                         //kill_link(user,"Protocol violation (3)");
2931                                         WriteServ(user->fd,"421 %s * :Unknown command",user->nick);
2932                                         return;
2933                                 }
2934                         }
2935                 }
2936         }
2937
2938         for (int i = 0; i != cmdlist.size(); i++)
2939         {
2940                 if (strcmp(cmdlist[i].command,""))
2941                 {
2942                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
2943                         {
2944                                 log(DEBUG,"Found matching command");
2945
2946                                 if (parameters)
2947                                 {
2948                                         if (strcmp(parameters,""))
2949                                         {
2950                                                 items = process_parameters(command_p,parameters);
2951                                         }
2952                                         else
2953                                         {
2954                                                 items = 0;
2955                                                 command_p[0] = NULL;
2956                                         }
2957                                 }
2958                                 else
2959                                 {
2960                                         items = 0;
2961                                         command_p[0] = NULL;
2962                                 }
2963
2964                                 if (user)
2965                                 {
2966                                         log(DEBUG,"Processing command");
2967
2968                                         /* activity resets the ping pending timer */
2969                                         user->nping = TIME + user->pingmax;
2970                                         if ((items) < cmdlist[i].min_params)
2971                                         {
2972                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
2973                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
2974                                                 return;
2975                                         }
2976                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
2977                                         {
2978                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2979                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
2980                                                 cmd_found = 1;
2981                                                 return;
2982                                         }
2983                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
2984                                         {
2985                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
2986                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
2987                                                 cmd_found = 1;
2988                                                 return;
2989                                         }
2990                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
2991                                          * deny command! */
2992                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
2993                                         {
2994                                                 if ((!isnick(user->nick)) || (user->registered != 7))
2995                                                 {
2996                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
2997                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
2998                                                         return;
2999                                                 }
3000                                         }
3001                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3002                                         {
3003                                                 char* mycmd;
3004                                                 char* savept2;
3005                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3006                                                 while (mycmd)
3007                                                 {
3008                                                         if (!strcasecmp(mycmd,command))
3009                                                         {
3010                                                                 // command is disabled!
3011                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3012                                                                 return;
3013                                                         }
3014                                                         mycmd = strtok_r(NULL," ",&savept2);
3015                                                 }
3016
3017
3018                                         }
3019                                         if ((user->registered == 7) || (!strcmp(command,"USER")) || (!strcmp(command,"NICK")) || (!strcmp(command,"PASS")))
3020                                         {
3021                                                 log(DEBUG,"process_command: handler: %s %s %d",user->nick,command,items);
3022                                                 if (cmdlist[i].handler_function)
3023                                                 {
3024                                                         /* ikky /stats counters */
3025                                                         if (temp)
3026                                                         {
3027                                                                 if (user)
3028                                                                 {
3029                                                                         user->bytes_in += strlen(temp);
3030                                                                         user->cmds_in++;
3031                                                                         user->bytes_out+=strlen(temp);
3032                                                                         user->cmds_out++;
3033                                                                 }
3034                                                                 cmdlist[i].use_count++;
3035                                                                 cmdlist[i].total_bytes+=strlen(temp);
3036                                                         }
3037
3038                                                         /* WARNING: nothing may come after the
3039                                                          * command handler call, as the handler
3040                                                          * may free the user structure! */
3041
3042                                                         cmdlist[i].handler_function(command_p,items,user);
3043                                                 }
3044                                                 return;
3045                                         }
3046                                         else
3047                                         {
3048                                                 log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3049                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3050                                                 return;
3051                                         }
3052                                 }
3053                                 cmd_found = 1;
3054                         }
3055                 }
3056         }
3057         if ((!cmd_found) && (user))
3058         {
3059                 log(DEBUG,"process_command: not in table: %s %s",user->nick,command);
3060                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3061         }
3062 }
3063
3064
3065 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3066 {
3067         command_t comm;
3068         /* create the command and push it onto the table */
3069         strlcpy(comm.command,cmd,MAXBUF);
3070         strlcpy(comm.source,source,MAXBUF);
3071         comm.handler_function = f;
3072         comm.flags_needed = flags;
3073         comm.min_params = minparams;
3074         comm.use_count = 0;
3075         comm.total_bytes = 0;
3076         cmdlist.push_back(comm);
3077         log(DEBUG,"Added command %s (%d parameters)",cmd,minparams);
3078 }
3079
3080 bool removecommands(const char* source)
3081 {
3082         bool go_again = true;
3083         while (go_again)
3084         {
3085                 go_again = false;
3086                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3087                 {
3088                         if (!strcmp(i->source,source))
3089                         {
3090                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3091                                 cmdlist.erase(i);
3092                                 go_again = true;
3093                                 break;
3094                         }
3095                 }
3096         }
3097         return true;
3098 }
3099
3100 void SetupCommandTable(void)
3101 {
3102         createcommand("USER",handle_user,0,4,"<core>");
3103         createcommand("NICK",handle_nick,0,1,"<core>");
3104         createcommand("QUIT",handle_quit,0,0,"<core>");
3105         createcommand("VERSION",handle_version,0,0,"<core>");
3106         createcommand("PING",handle_ping,0,1,"<core>");
3107         createcommand("PONG",handle_pong,0,1,"<core>");
3108         createcommand("ADMIN",handle_admin,0,0,"<core>");
3109         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3110         createcommand("INFO",handle_info,0,0,"<core>");
3111         createcommand("TIME",handle_time,0,0,"<core>");
3112         createcommand("WHOIS",handle_whois,0,1,"<core>");
3113         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3114         createcommand("NOTICE",handle_notice,0,2,"<core>");
3115         createcommand("JOIN",handle_join,0,1,"<core>");
3116         createcommand("NAMES",handle_names,0,0,"<core>");
3117         createcommand("PART",handle_part,0,1,"<core>");
3118         createcommand("KICK",handle_kick,0,2,"<core>");
3119         createcommand("MODE",handle_mode,0,1,"<core>");
3120         createcommand("TOPIC",handle_topic,0,1,"<core>");
3121         createcommand("WHO",handle_who,0,1,"<core>");
3122         createcommand("MOTD",handle_motd,0,0,"<core>");
3123         createcommand("RULES",handle_rules,0,0,"<core>");
3124         createcommand("OPER",handle_oper,0,2,"<core>");
3125         createcommand("LIST",handle_list,0,0,"<core>");
3126         createcommand("DIE",handle_die,'o',1,"<core>");
3127         createcommand("RESTART",handle_restart,'o',1,"<core>");
3128         createcommand("KILL",handle_kill,'o',2,"<core>");
3129         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3130         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3131         createcommand("STATS",handle_stats,0,1,"<core>");
3132         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3133         createcommand("AWAY",handle_away,0,0,"<core>");
3134         createcommand("ISON",handle_ison,0,0,"<core>");
3135         createcommand("SUMMON",handle_summon,0,0,"<core>");
3136         createcommand("USERS",handle_users,0,0,"<core>");
3137         createcommand("INVITE",handle_invite,0,2,"<core>");
3138         createcommand("PASS",handle_pass,0,1,"<core>");
3139         createcommand("TRACE",handle_trace,'o',0,"<core>");
3140         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3141         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3142         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3143         createcommand("MODULES",handle_modules,0,0,"<core>");
3144         createcommand("LINKS",handle_links,0,0,"<core>");
3145         createcommand("MAP",handle_map,0,0,"<core>");
3146         createcommand("KLINE",handle_kline,'o',1,"<core>");
3147         createcommand("GLINE",handle_gline,'o',1,"<core>");
3148         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3149         createcommand("QLINE",handle_qline,'o',1,"<core>");
3150         createcommand("ELINE",handle_eline,'o',1,"<core>");
3151         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3152         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3153         createcommand("SERVER",handle_server,0,0,"<core>");
3154 }
3155
3156 void process_buffer(const char* cmdbuf,userrec *user)
3157 {
3158         if (!user)
3159         {
3160                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3161                 return;
3162         }
3163         char cmd[MAXBUF];
3164         int i;
3165         if (!cmdbuf)
3166         {
3167                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3168                 return;
3169         }
3170         if (!strcmp(cmdbuf,""))
3171         {
3172                 return;
3173         }
3174         while ((cmdbuf[0] == ' ') && (strlen(cmdbuf)>0)) cmdbuf++; // strip leading spaces
3175
3176         strlcpy(cmd,cmdbuf,MAXBUF);
3177         if (!strcmp(cmd,""))
3178         {
3179                 return;
3180         }
3181         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3182         {
3183                 cmd[strlen(cmd)-1] = '\0';
3184         }
3185         if ((cmd[strlen(cmd)-1] == 13) || (cmd[strlen(cmd)-1] == 10))
3186         {
3187                 cmd[strlen(cmd)-1] = '\0';
3188         }
3189
3190         while ((cmd[strlen(cmd)-1] == ' ') && (strlen(cmd)>0)) // strip trailing spaces
3191         {
3192                 cmd[strlen(cmd)-1] = '\0';
3193         }
3194
3195         if (!strcmp(cmd,""))
3196         {
3197                 return;
3198         }
3199         log(DEBUG,"InspIRCd: processing: %s %s",user->nick,cmd);
3200         tidystring(cmd);
3201         if ((user) && (cmd))
3202         {
3203                 process_command(user,cmd);
3204         }
3205 }
3206
3207 void DoSync(serverrec* serv, char* tcp_host)
3208 {
3209         char data[MAXBUF];
3210         log(DEBUG,"Sending sync");
3211         // send start of sync marker: Y <timestamp>
3212         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3213         // except the ones its receiving it from.
3214         snprintf(data,MAXBUF,"Y %d",TIME);
3215         serv->SendPacket(data,tcp_host);
3216         // send users and channels
3217         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3218         {
3219                 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);
3220                 serv->SendPacket(data,tcp_host);
3221                 if (strchr(u->second->modes,'o'))
3222                 {
3223                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3224                         serv->SendPacket(data,tcp_host);
3225                 }
3226                 for (int i = 0; i <= MODCOUNT; i++)
3227                 {
3228                         string_list l = modules[i]->OnUserSync(u->second);
3229                         for (int j = 0; j < l.size(); j++)
3230                         {
3231                                 strlcpy(data,l[j].c_str(),MAXBUF);
3232                                 serv->SendPacket(data,tcp_host);
3233                         }
3234                 }
3235                 if (strcmp(chlist(u->second),""))
3236                 {
3237                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chlist(u->second));
3238                         serv->SendPacket(data,tcp_host);
3239                 }
3240         }
3241         // send channel modes, topics etc...
3242         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3243         {
3244                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3245                 serv->SendPacket(data,tcp_host);
3246                 for (int i = 0; i <= MODCOUNT; i++)
3247                 {
3248                         string_list l = modules[i]->OnChannelSync(c->second);
3249                         for (int j = 0; j < l.size(); j++)
3250                         {
3251                                 strlcpy(data,l[j].c_str(),MAXBUF);
3252                                 serv->SendPacket(data,tcp_host);
3253                         }
3254                 }
3255                 if (strcmp(c->second->topic,""))
3256                 {
3257                         snprintf(data,MAXBUF,"T %d %s %s :%s",c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3258                         serv->SendPacket(data,tcp_host);
3259                 }
3260                 // send current banlist
3261
3262                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3263                 {
3264                         snprintf(data,MAXBUF,"M %s +b %s",b->set_time,c->second->name,b->data);
3265                         serv->SendPacket(data,tcp_host);
3266                 }
3267         }
3268         // sync global zlines, glines, etc
3269         sync_xlines(serv,tcp_host);
3270
3271         for (int j = 0; j < 32; j++)
3272         {
3273                 if (me[j] != NULL)
3274                 {
3275                         for (int k = 0; k < me[j]->connectors.size(); k++)
3276                         {
3277                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3278                                 {
3279                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3280                                         serv->SendPacket(data,tcp_host);
3281                                         NetSendMyRoutingTable();
3282                                 }
3283                         }
3284                 }
3285         }
3286
3287         snprintf(data,MAXBUF,"F %d",TIME);
3288         serv->SendPacket(data,tcp_host);
3289         log(DEBUG,"Sent sync");
3290         // ircd sends its serverlist after the end of sync here
3291 }
3292
3293
3294 void NetSendMyRoutingTable()
3295 {
3296         // send out a line saying what is reachable to us.
3297         // E.g. if A is linked to B C and D, send out:
3298         // $ A B C D
3299         // if its only linked to B and D send out:
3300         // $ A B D
3301         // if it has no links, dont even send out the line at all.
3302         char buffer[MAXBUF];
3303         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3304         bool sendit = false;
3305         for (int i = 0; i < 32; i++)
3306         {
3307                 if (me[i] != NULL)
3308                 {
3309                         for (int j = 0; j < me[i]->connectors.size(); j++)
3310                         {
3311                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3312                                 {
3313                                         strlcat(buffer," ",MAXBUF);
3314                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3315                                         sendit = true;
3316                                 }
3317                         }
3318                 }
3319         }
3320         if (sendit)
3321                 NetSendToAll(buffer);
3322 }
3323
3324
3325 void DoSplit(const char* params)
3326 {
3327         bool go_again = true;
3328         while (go_again)
3329         {
3330                 go_again = false;
3331                 for (int i = 0; i < 32; i++)
3332                 {
3333                         if (me[i] != NULL)
3334                         {
3335                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3336                                 {
3337                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3338                                         {
3339                                                 j->routes.clear();
3340                                                 j->CloseConnection();
3341                                                 me[i]->connectors.erase(j);
3342                                                 go_again = true;
3343                                                 break;
3344                                         }
3345                                 }
3346                         }
3347                 }
3348         }
3349         log(DEBUG,"Removed server. Will remove clients...");
3350         // iterate through the userlist and remove all users on this server.
3351         // because we're dealing with a mesh, we dont have to deal with anything
3352         // "down-route" from this server (nice huh)
3353         go_again = true;
3354         char reason[MAXBUF];
3355         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3356         while (go_again)
3357         {
3358                 go_again = false;
3359                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3360                 {
3361                         if (!strcasecmp(u->second->server,params))
3362                         {
3363                                 kill_link(u->second,reason);
3364                                 go_again = true;
3365                                 break;
3366                         }
3367                 }
3368         }
3369 }
3370
3371 // removes a server. Will NOT remove its users!
3372
3373 void RemoveServer(const char* name)
3374 {
3375         bool go_again = true;
3376         while (go_again)
3377         {
3378                 go_again = false;
3379                 for (int i = 0; i < 32; i++)
3380                 {
3381                         if (me[i] != NULL)
3382                         {
3383                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3384                                 {
3385                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3386                                         {
3387                                                 j->routes.clear();
3388                                                 j->CloseConnection();
3389                                                 me[i]->connectors.erase(j);
3390                                                 go_again = true;
3391                                                 break;
3392                                         }
3393                                 }
3394                         }
3395                 }
3396         }
3397 }
3398
3399
3400 int reap_counter = 0;
3401 char MODERR[MAXBUF];
3402
3403 char* ModuleError()
3404 {
3405         return MODERR;
3406 }
3407
3408 void erase_factory(int j)
3409 {
3410         int v = 0;
3411         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3412         {
3413                 if (v == j)
3414                 {
3415                         factory.erase(t);
3416                         factory.push_back(NULL);
3417                         return;
3418                 }
3419                 v++;
3420         }
3421 }
3422
3423 void erase_module(int j)
3424 {
3425         int v = 0;
3426         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3427         {
3428                 if (v == j)
3429                 {
3430                         delete *m;
3431                         modules.erase(m);
3432                         modules.push_back(NULL);
3433                         break;
3434                 }
3435                 v++;
3436         }
3437         int v2 = 0;
3438         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3439         {
3440                 if (v2 == j)
3441                 {
3442                        module_names.erase(v);
3443                        break;
3444                 }
3445                 v2++;
3446         }
3447
3448 }
3449
3450 bool UnloadModule(const char* filename)
3451 {
3452         for (int j = 0; j != module_names.size(); j++)
3453         {
3454                 if (module_names[j] == std::string(filename))
3455                 {
3456                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3457                         {
3458                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3459                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3460                                 return false;
3461                         }
3462                         // found the module
3463                         log(DEBUG,"Deleting module...");
3464                         erase_module(j);
3465                         log(DEBUG,"Erasing module entry...");
3466                         erase_factory(j);
3467                         log(DEBUG,"Removing dependent commands...");
3468                         removecommands(filename);
3469                         log(DEFAULT,"Module %s unloaded",filename);
3470                         MODCOUNT--;
3471                         return true;
3472                 }
3473         }
3474         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3475         snprintf(MODERR,MAXBUF,"Module not loaded");
3476         return false;
3477 }
3478
3479 bool DirValid(char* dirandfile)
3480 {
3481         char work[MAXBUF];
3482         strlcpy(work,dirandfile,MAXBUF);
3483         int p = strlen(work);
3484         // we just want the dir
3485         while (strlen(work))
3486         {
3487                 if (work[p] == '/')
3488                 {
3489                         work[p] = '\0';
3490                         break;
3491                 }
3492                 work[p--] = '\0';
3493         }
3494         log(DEBUG,"Dir valid: %s",work);
3495         char buffer[MAXBUF], otherdir[MAXBUF];
3496         // Get the current working directory
3497         if( getcwd( buffer, MAXBUF ) == NULL )
3498                 return false;
3499         chdir(work);
3500         if( getcwd( otherdir, MAXBUF ) == NULL )
3501                 return false;
3502         chdir(buffer);
3503         log(DEBUG,"Dir is really: %s",otherdir);
3504         if (strlen(otherdir) >= strlen(work))
3505         {
3506                 otherdir[strlen(work)] = '\0';
3507                 log(DEBUG,"Compare: '%s' -> '%s'",otherdir,work);
3508                 if (!strcmp(otherdir,work))
3509                 {
3510                         log(DEBUG,"Match ok");
3511                         return true;
3512                 }
3513                 log(DEBUG,"No match");
3514                 return false;
3515         }
3516         else return false;
3517 }
3518
3519 bool LoadModule(const char* filename)
3520 {
3521         char modfile[MAXBUF];
3522         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3523         if (!DirValid(modfile))
3524         {
3525                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3526                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3527                 return false;
3528         }
3529         log(DEBUG,"Loading module: %s",modfile);
3530         if (FileExists(modfile))
3531         {
3532                 for (int j = 0; j < module_names.size(); j++)
3533                 {
3534                         if (module_names[j] == std::string(filename))
3535                         {
3536                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3537                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3538                                 return false;
3539                         }
3540                 }
3541                 ircd_module* a = new ircd_module(modfile);
3542                 factory[MODCOUNT+1] = a;
3543                 if (factory[MODCOUNT+1]->LastError())
3544                 {
3545                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3546                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3547                         MODCOUNT--;
3548                         return false;
3549                 }
3550                 if (factory[MODCOUNT+1]->factory)
3551                 {
3552                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3553                         modules[MODCOUNT+1] = m;
3554                         /* save the module and the module's classfactory, if
3555                          * this isnt done, random crashes can occur :/ */
3556                         module_names.push_back(filename);
3557                 }
3558                 else
3559                 {
3560                         log(DEFAULT,"Unable to load %s",modfile);
3561                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3562                         return false;
3563                 }
3564         }
3565         else
3566         {
3567                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3568                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3569                 return false;
3570         }
3571         MODCOUNT++;
3572         return true;
3573 }
3574
3575 int InspIRCd(void)
3576 {
3577         struct sockaddr_in client,server;
3578         char addrs[MAXBUF][255];
3579         int incomingSockfd, result = TRUE;
3580         socklen_t length;
3581         int count = 0;
3582         int selectResult = 0, selectResult2 = 0;
3583         char *temp, configToken[MAXBUF], stuff[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3584         char resolvedHost[MAXBUF];
3585         fd_set selectFds;
3586         timeval tv;
3587
3588         log_file = fopen("ircd.log","a+");
3589         if (!log_file)
3590         {
3591                 printf("ERROR: Could not write to logfile ircd.log, bailing!\n\n");
3592                 Exit(ERROR);
3593         }
3594
3595         log(DEBUG,"InspIRCd: startup: begin");
3596         log(DEBUG,"$Id$");
3597         if (geteuid() == 0)
3598         {
3599                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3600                 Exit(ERROR);
3601                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3602         }
3603         SetupCommandTable();
3604         log(DEBUG,"InspIRCd: startup: default command table set up");
3605
3606         ReadConfig(true,NULL);
3607         if (strcmp(DieValue,""))
3608         {
3609                 printf("WARNING: %s\n\n",DieValue);
3610                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3611                 exit(0);
3612         }
3613         log(DEBUG,"InspIRCd: startup: read config");
3614
3615         int count2 = 0, count3 = 0;
3616
3617         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3618         {
3619                 ConfValue("bind","port",count,configToken,&config_f);
3620                 ConfValue("bind","address",count,Addr,&config_f);
3621                 ConfValue("bind","type",count,Type,&config_f);
3622                 if (!strcmp(Type,"servers"))
3623                 {
3624                         char Default[MAXBUF];
3625                         strcpy(Default,"no");
3626                         ConfValue("bind","default",count,Default,&config_f);
3627                         if (strchr(Default,'y'))
3628                         {
3629                                 defaultRoute = count3;
3630                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3631                         }
3632                         me[count3] = new serverrec(ServerName,100L,false);
3633                         if (!me[count3]->CreateListener(Addr,atoi(configToken)))
3634                         {
3635                                 log(DEFAULT,"Error! Failed to bind port %d",atoi(configToken));
3636                         }
3637                         else
3638                         {
3639                                 count3++;
3640                         }
3641                 }
3642                 else
3643                 {
3644                         ports[count2] = atoi(configToken);
3645                         strlcpy(addrs[count2],Addr,256);
3646                         count2++;
3647                 }
3648                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3649         }
3650         portCount = count2;
3651         UDPportCount = count3;
3652
3653         log(DEBUG,"InspIRCd: startup: read %d total client ports and %d total server ports",portCount,UDPportCount);
3654
3655         log(DEBUG,"InspIRCd: startup: InspIRCd is now running!");
3656
3657         printf("\n");
3658
3659         /* BugFix By Craig! :p */
3660         MODCOUNT = -1;
3661         for (count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
3662         {
3663                 ConfValue("module","name",count2,configToken,&config_f);
3664                 printf("Loading module... \033[1;37m%s\033[0;37m\n",configToken);
3665                 if (!LoadModule(configToken))
3666                 {
3667                         log(DEBUG,"Exiting due to a module loader error.");
3668                         printf("There was an error loading a module: %s\n",ModuleError());
3669                         Exit(0);
3670                 }
3671         }
3672         log(DEBUG,"Total loaded modules: %d",MODCOUNT+1);
3673
3674         printf("\nInspIRCd is now running!\n");
3675
3676         startup_time = time(NULL);
3677
3678         if (nofork)
3679         {
3680                 log(VERBOSE,"Not forking as -nofork was specified");
3681         }
3682         else
3683         {
3684                 if (DaemonSeed() == ERROR)
3685                 {
3686                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
3687                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
3688                         Exit(ERROR);
3689                 }
3690         }
3691
3692         char PID[MAXBUF];
3693         ConfValue("pid","file",0,PID,&config_f);
3694         WritePID(PID);
3695
3696
3697         /* setup select call */
3698         FD_ZERO(&selectFds);
3699         log(DEBUG,"InspIRCd: startup: zero selects");
3700         log(VERBOSE,"InspIRCd: startup: portCount = %d", portCount);
3701
3702         for (count = 0; count < portCount; count++)
3703         {
3704                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
3705                 {
3706                         log(DEBUG,"InspIRCd: startup: bad fd %d",openSockfd[boundPortCount]);
3707                         return(ERROR);
3708                 }
3709                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
3710                 {
3711                         log(DEFAULT,"InspIRCd: startup: failed to bind port %d",ports[count]);
3712                 }
3713                 else    /* well we at least bound to one socket so we'll continue */
3714                 {
3715                         boundPortCount++;
3716                 }
3717         }
3718
3719         log(DEBUG,"InspIRCd: startup: total bound ports %d",boundPortCount);
3720
3721         /* if we didn't bind to anything then abort */
3722         if (boundPortCount == 0)
3723         {
3724                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
3725                 return (ERROR);
3726         }
3727
3728
3729         length = sizeof (client);
3730         char udp_msg[MAXBUF], tcp_host[MAXBUF];
3731
3732         fd_set serverfds;
3733         timeval tvs;
3734         tvs.tv_usec = 7000L;
3735         tvs.tv_sec = 0;
3736         tv.tv_sec = 0;
3737         tv.tv_usec = 7000L;
3738         char data[10240];
3739         timeval tval;
3740         fd_set sfd;
3741         tval.tv_usec = 7000L;
3742         tval.tv_sec = 0;
3743         int total_in_this_set = 0;
3744         int v = 0;
3745         bool expire_run = false;
3746
3747         /* main loop, this never returns */
3748         for (;;)
3749         {
3750 #ifdef _POSIX_PRIORITY_SCHEDULING
3751                 sched_yield();
3752 #endif
3753                 // poll dns queue
3754                 dns_poll();
3755                 FD_ZERO(&sfd);
3756
3757                 // we only read time() once per iteration rather than tons of times!
3758                 TIME = time(NULL);
3759
3760                 user_hash::iterator count2 = clientlist.begin();
3761
3762                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
3763                 // them in a list, then reap the list every second or so.
3764                 if (((TIME % 5) == 0) && (!expire_run))
3765                 {
3766                         expire_lines();
3767                         expire_run = true;
3768                 }
3769                 if ((TIME % 5) == 1)
3770                         expire_run = false;
3771                 if (reap_counter>300)
3772                 {
3773                         if (fd_reap.size() > 0)
3774                         {
3775                                 for( int n = 0; n < fd_reap.size(); n++)
3776                                 {
3777                                         if ((fd_reap[n] > -1))
3778                                         {
3779                                                 close(fd_reap[n]);
3780                                                 shutdown (fd_reap[n],2);
3781                                         }
3782                                 }
3783                         }
3784                         fd_reap.clear();
3785                         reap_counter=0;
3786                 }
3787                 reap_counter++;
3788
3789                 FD_ZERO(&serverfds);
3790
3791                 for (int x = 0; x != UDPportCount; x++)
3792                 {
3793                         if (me[x])
3794                                 FD_SET(me[x]->fd, &serverfds);
3795                 }
3796
3797                 // serverFds timevals went here
3798
3799                 tvs.tv_usec = 7000L;
3800                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
3801                 if (servresult > 0)
3802                 {
3803                         for (int x = 0; x != UDPportCount; x++)
3804                         {
3805                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
3806                                 {
3807                                         char remotehost[MAXBUF],resolved[MAXBUF];
3808                                         length = sizeof (client);
3809                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
3810                                         if (incomingSockfd != -1)
3811                                         {
3812                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
3813                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
3814                                                 {
3815                                                         strlcpy(resolved,remotehost,MAXBUF);
3816                                                 }
3817                                                 // add to this connections ircd_connector vector
3818                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
3819                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
3820                                         }
3821                                 }
3822                         }
3823                 }
3824
3825                 for (int x = 0; x < UDPportCount; x++)
3826                 {
3827                         std::deque<std::string> msgs;
3828                         msgs.clear();
3829                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
3830                         {
3831                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
3832                                 {
3833                                         char udp_msg[MAXBUF];
3834                                         strlcpy(udp_msg,msgs[ctr].c_str(),MAXBUF);
3835                                         if (strlen(udp_msg)<1)
3836                                         {
3837                                                 log(DEBUG,"Invalid string from %s [route%d]",tcp_host,x);
3838                                                 break;
3839                                         }
3840                                         // during a netburst, send all data to all other linked servers
3841                                         if ((((nb_start>0) && (udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))) || (is_uline(tcp_host)))
3842                                         {
3843                                                 if (is_uline(tcp_host))
3844                                                 {
3845                                                         if ((udp_msg[0] != 'Y') && (udp_msg[0] != 'X') && (udp_msg[0] != 'F'))
3846                                                         {
3847                                                                 NetSendToAllExcept(tcp_host,udp_msg);
3848                                                         }
3849                                                 }
3850                                                 else
3851                                                         NetSendToAllExcept(tcp_host,udp_msg);
3852                                         }
3853                                         std::string msg = udp_msg;
3854                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
3855                                         strlcpy(udp_msg,msg.c_str(),MAXBUF);
3856                                 }
3857                                 goto label;
3858                         }
3859                 }
3860
3861
3862         while (count2 != clientlist.end())
3863         {
3864                 FD_ZERO(&sfd);
3865                 total_in_this_set = 0;
3866
3867                 user_hash::iterator xcount = count2;
3868                 user_hash::iterator endingiter = count2;
3869
3870                 if (count2 == clientlist.end()) break;
3871
3872                 if (count2->second)
3873                 if (count2->second->fd != 0)
3874                 {
3875                         // assemble up to 64 sockets into an fd_set
3876                         // to implement a pooling mechanism.
3877                         //
3878                         // This should be up to 64x faster than the
3879                         // old implementation.
3880                         while (total_in_this_set < 64)
3881                         {
3882                                 if (count2 != clientlist.end())
3883                                 {
3884                                         // we don't check the state of remote users.
3885                                         if (count2->second->fd > 0)
3886                                         {
3887                                                 FD_SET (count2->second->fd, &sfd);
3888
3889                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
3890                                                 // their connection class.
3891                                                 if ((TIME > count2->second->timeout) && (count2->second->registered != 7))
3892                                                 {
3893                                                         log(DEBUG,"InspIRCd: registration timeout: %s",count2->second->nick);
3894                                                         kill_link(count2->second,"Registration timeout");
3895                                                         goto label;
3896                                                 }
3897                                                 if ((TIME > count2->second->signon) && (count2->second->registered == 3))
3898                                                 {
3899                                                                 count2->second->dns_done = true;
3900                                                                 FullConnectUser(count2->second);
3901                                                                 goto label;
3902                                                 }
3903                                                 if ((count2->second->dns_done) && (count2->second->registered == 3)) // both NICK and USER... and DNS
3904                                                 {
3905                                                         FullConnectUser(count2->second);
3906                                                         goto label;
3907                                                 }
3908                                                 if ((TIME > count2->second->nping) && (isnick(count2->second->nick)) && (count2->second->registered == 7))
3909                                                 {
3910                                                         if ((!count2->second->lastping) && (count2->second->registered == 7))
3911                                                         {
3912                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",count2->second->nick);
3913                                                                 kill_link(count2->second,"Ping timeout");
3914                                                                 goto label;
3915                                                         }
3916                                                         Write(count2->second->fd,"PING :%s",ServerName);
3917                                                         log(DEBUG,"InspIRCd: pinging: %s",count2->second->nick);
3918                                                         count2->second->lastping = 0;
3919                                                         count2->second->nping = TIME+count2->second->pingmax;   // was hard coded to 120
3920                                                 }
3921                                         }
3922                                         count2++;
3923                                         total_in_this_set++;
3924                                 }
3925                                 else break;
3926                         }
3927
3928                         endingiter = count2;
3929                         count2 = xcount; // roll back to where we were
3930
3931                         v = 0;
3932
3933                         // tvals defined here
3934
3935                         tval.tv_usec = 7000L;
3936                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
3937
3938                         // now loop through all of the items in this pool if any are waiting
3939                         //if (selectResult2 > 0)
3940                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
3941                         {
3942
3943 #ifdef _POSIX_PRIORITY_SCHEDULING
3944                                 sched_yield();
3945 #endif
3946
3947                                 result = EAGAIN;
3948                                 if ((count2a->second->fd != FD_MAGIC_NUMBER) && (count2a->second->fd != -1) && (FD_ISSET (count2a->second->fd, &sfd)))
3949                                 {
3950                                         memset(data, 0, 10240);
3951                                         result = read(count2a->second->fd, data, 10240);
3952
3953                                         if (result)
3954                                         {
3955                                                 userrec* current = count2a->second;
3956                                                 int currfd = current->fd;
3957                                                 char* l = strtok(data,"\n");
3958                                                 int floodlines = 0;
3959                                                 while (l)
3960                                                 {
3961                                                         floodlines++;
3962                                                         if ((floodlines > current->flood) && (current->flood != 0))
3963                                                         {
3964                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3965                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
3966                                                                 kill_link(current,"Excess flood");
3967                                                                 goto label;
3968                                                         }
3969                                                         char sanitized[NetBufferSize];
3970                                                         memset(sanitized, 0, NetBufferSize);
3971                                                         int ptt = 0;
3972                                                         for (int pt = 0; pt < strlen(l); pt++)
3973                                                         {
3974                                                                 if (l[pt] != '\r')
3975                                                                 {
3976                                                                         sanitized[ptt++] = l[pt];
3977                                                                 }
3978                                                         }
3979                                                         sanitized[ptt] = '\0';
3980                                                         if (strlen(sanitized))
3981                                                         {
3982
3983
3984                                                                 // we're gonna re-scan to check if the nick is gone, after every
3985                                                                 // command - if it has, we're gonna bail
3986                                                                 bool find_again = false;
3987                                                                 process_buffer(sanitized,current);
3988
3989                                                                 // look for the user's record in case it's changed
3990                                                                 for (user_hash::iterator c2 = clientlist.begin(); c2 != clientlist.end(); c2++)
3991                                                                 {
3992                                                                         if (c2->second->fd == currfd)
3993                                                                         {
3994                                                                                 // found again, update pointer
3995                                                                                 current == c2->second;
3996                                                                                 find_again = true;
3997                                                                                 break;
3998                                                                         }
3999                                                                 }
4000                                                                 if (!find_again)
4001                                                                         goto label;
4002
4003                                                         }
4004                                                         l = strtok(NULL,"\n");
4005                                                 }
4006                                                 goto label;
4007                                         }
4008
4009                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4010                                         {
4011                                                 log(DEBUG,"killing: %s",count2a->second->nick);
4012                                                 kill_link(count2a->second,strerror(errno));
4013                                                 goto label;
4014                                         }
4015                                 }
4016                                 // result EAGAIN means nothing read
4017                                 if (result == EAGAIN)
4018                                 {
4019                                 }
4020                                 else
4021                                 if (result == 0)
4022                                 {
4023                                         if (count2->second)
4024                                         {
4025                                                 log(DEBUG,"InspIRCd: Exited: %s",count2a->second->nick);
4026                                                 kill_link(count2a->second,"Client exited");
4027                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4028                                                 log(DEBUG,"Bailing from client exit");
4029                                                 goto label;
4030                                         }
4031                                 }
4032                                 else if (result > 0)
4033                                 {
4034                                 }
4035                         }
4036                 }
4037                 for (int q = 0; q < total_in_this_set; q++)
4038                 {
4039                         // there is no iterator += operator :(
4040                         //if (count2 != clientlist.end())
4041                         //{
4042                                 count2++;
4043                         //}
4044                 }
4045         }
4046
4047         // set up select call
4048         for (count = 0; count < boundPortCount; count++)
4049         {
4050                 FD_SET (openSockfd[count], &selectFds);
4051         }
4052
4053         tv.tv_usec = 7000L;
4054         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4055
4056         /* select is reporting a waiting socket. Poll them all to find out which */
4057         if (selectResult > 0)
4058         {
4059                 char target[MAXBUF], resolved[MAXBUF];
4060                 for (count = 0; count < boundPortCount; count++)
4061                 {
4062                         if (FD_ISSET (openSockfd[count], &selectFds))
4063                         {
4064                                 length = sizeof (client);
4065                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4066
4067                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4068                                 strlcpy (resolved, target, MAXBUF);
4069
4070                                 if (incomingSockfd < 0)
4071                                 {
4072                                         WriteOpers("*** WARNING: Accept failed on port %d (%s)", ports[count],target);
4073                                         log(DEBUG,"InspIRCd: accept failed: %d",ports[count]);
4074                                 }
4075                                 else
4076                                 {
4077                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4078                                         log(DEBUG,"InspIRCd: adding client on port %d fd=%d",ports[count],incomingSockfd);
4079                                 }
4080                                 goto label;
4081                         }
4082                 }
4083         }
4084         label:
4085         if(0) {}; // "Label must be followed by a statement"... so i gave it one.
4086 }
4087 /* not reached */
4088 close (incomingSockfd);
4089 }
4090