src/inspircd.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  Inspire is copyright (C) 2002-2004 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 /* Now with added unF! ;) */
  18
  19 using namespace std;
  20
  21 #include "inspircd.h"
  22 #include "inspircd_io.h"
  23 #include "inspircd_util.h"
  24 #include "inspircd_config.h"
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/errno.h>
  28 #include <sys/ioctl.h>
  29 #include <sys/utsname.h>
  30 #include <cstdio>
  31 #include <time.h>
  32 #include <string>
  33 #ifdef GCC3
  34 #include <ext/hash_map>
  35 #else
  36 #include <hash_map>
  37 #endif
  38 #include <map>
  39 #include <sstream>
  40 #include <vector>
  41 #include <errno.h>
  42 #include <deque>
  43 #include <errno.h>
  44 #include <unistd.h>
  45 #include <sched.h>
  46 #include "connection.h"
  47 #include "users.h"
  48 #include "servers.h"
  49 #include "ctables.h"
  50 #include "globals.h"
  51 #include "modules.h"
  52 #include "dynamic.h"
  53 #include "wildcard.h"
  54 #include "message.h"
  55 #include "mode.h"
  56 #include "commands.h"
  57 #include "xline.h"
  58 #include "inspstring.h"
  59 #include "dnsqueue.h"
  60
  61 #ifdef GCC3
  62 #define nspace __gnu_cxx
  63 #else
  64 #define nspace std
  65 #endif
  66
  67 int LogLevel = DEFAULT;
  68 char ServerName[MAXBUF];
  69 char Network[MAXBUF];
  70 char ServerDesc[MAXBUF];
  71 char AdminName[MAXBUF];
  72 char AdminEmail[MAXBUF];
  73 char AdminNick[MAXBUF];
  74 char diepass[MAXBUF];
  75 char restartpass[MAXBUF];
  76 char motd[MAXBUF];
  77 char rules[MAXBUF];
  78 char list[MAXBUF];
  79 char PrefixQuit[MAXBUF];
  80 char DieValue[MAXBUF];
  81 char DNSServer[MAXBUF];
  82 int debugging =  0;
  83 int WHOWAS_STALE = 48; // default WHOWAS Entries last 2 days before they go 'stale'
  84 int WHOWAS_MAX = 100;  // default 100 people maximum in the WHOWAS list
  85 int DieDelay  =  5;
  86 time_t startup_time = time(NULL);
  87 int NetBufferSize = 10240; // NetBufferSize used as the buffer size for all read() ops
  88 extern int MaxWhoResults;
  89 time_t nb_start = 0;
  90 int dns_timeout = 5;
  91
  92 char DisabledCommands[MAXBUF];
  93
  94 bool AllowHalfop = true;
  95 bool AllowProtect = true;
  96 bool AllowFounder = true;
  97
  98 extern std::vector<Module*> modules;
  99 std::vector<std::string> module_names;
 100 extern std::vector<ircd_module*> factory;
 101
 102 extern int MODCOUNT;
 103 int openSockfd[MAXSOCKS];
 104 bool nofork = false;
 105 bool unlimitcore = false;
 106
 107 time_t TIME = time(NULL);
 108
 109 namespace nspace
 110 {
 111 #ifdef GCC34
 112         template<> struct hash<in_addr>
 113 #else
 114         template<> struct nspace::hash<in_addr>
 115 #endif
 116         {
 117                 size_t operator()(const struct in_addr &a) const
 118                 {
 119                         size_t q;
 120                         memcpy(&q,&a,sizeof(size_t));
 121                         return q;
 122                 }
 123         };
 124 #ifdef GCC34
 125         template<> struct hash<string>
 126 #else
 127         template<> struct nspace::hash<string>
 128 #endif
 129         {
 130                 size_t operator()(const string &s) const
 131                 {
 132                         char a[MAXBUF];
 133                         static struct hash<const char *> strhash;
 134                         strlcpy(a,s.c_str(),MAXBUF);
 135                         strlower(a);
 136                         return strhash(a);
 137                 }
 138         };
 139 }
 140
 141
 142 struct StrHashComp
 143 {
 144
 145         bool operator()(const string& s1, const string& s2) const
 146         {
 147                 char a[MAXBUF],b[MAXBUF];
 148                 strlcpy(a,s1.c_str(),MAXBUF);
 149                 strlcpy(b,s2.c_str(),MAXBUF);
 150                 strlower(a);
 151                 strlower(b);
 152                 return (strcasecmp(a,b) == 0);
 153         }
 154
 155 };
 156
 157 struct InAddr_HashComp
 158 {
 159
 160         bool operator()(const in_addr &s1, const in_addr &s2) const
 161         {
 162                 size_t q;
 163                 size_t p;
 164
 165                 memcpy(&q,&s1,sizeof(size_t));
 166                 memcpy(&p,&s2,sizeof(size_t));
 167
 168                 return (q == p);
 169         }
 170
 171 };
 172
 173
 174 typedef nspace::hash_map<std::string, userrec*, nspace::hash<string>, StrHashComp> user_hash;
 175 typedef nspace::hash_map<std::string, chanrec*, nspace::hash<string>, StrHashComp> chan_hash;
 176 typedef nspace::hash_map<in_addr,string*, nspace::hash<in_addr>, InAddr_HashComp> address_cache;
 177 typedef std::deque<command_t> command_table;
 178
 179 // This table references users by file descriptor.
 180 // its an array to make it VERY fast, as all lookups are referenced
 181 // by an integer, meaning there is no need for a scan/search operation.
 182 userrec* fd_ref_table[65536];
 183
 184 int statsAccept = 0, statsRefused = 0, statsUnknown = 0, statsCollisions = 0, statsDns = 0, statsDnsGood = 0, statsDnsBad = 0, statsConnects = 0, statsSent= 0, statsRecv = 0;
 185
 186 serverrec* me[32];
 187
 188 FILE *log_file;
 189
 190 user_hash clientlist;
 191 chan_hash chanlist;
 192 user_hash whowas;
 193 command_table cmdlist;
 194 file_cache MOTD;
 195 file_cache RULES;
 196 address_cache IP;
 197
 198 ClassVector Classes;
 199
 200 struct linger linger = { 0 };
 201 char MyExecutable[1024];
 202 int boundPortCount = 0;
 203 int portCount = 0, SERVERportCount = 0, ports[MAXSOCKS];
 204 int defaultRoute = 0;
 205 char ModPath[MAXBUF];
 206
 207 /* prototypes */
 208
 209 int has_channel(userrec *u, chanrec *c);
 210 int usercount(chanrec *c);
 211 int usercount_i(chanrec *c);
 212 char* Passwd(userrec *user);
 213 bool IsDenied(userrec *user);
 214 void AddWhoWas(userrec* u);
 215
 216 std::vector<long> auth_cookies;
 217 std::stringstream config_f(stringstream::in | stringstream::out);
 218
 219 std::vector<userrec*> all_opers;
 220
 221 static char already_sent[65536];
 222
 223 char lowermap[255];
 224
 225 void AddOper(userrec* user)
 226 {
 227         log(DEBUG,"Oper added to optimization list");
 228         all_opers.push_back(user);
 229 }
 230
 231 void DeleteOper(userrec* user)
 232 {
 233         for (std::vector<userrec*>::iterator a = all_opers.begin(); a < all_opers.end(); a++)
 234         {
 235                 if (*a == user)
 236                 {
 237                         log(DEBUG,"Oper removed from optimization list");
 238                         all_opers.erase(a);
 239                         return;
 240                 }
 241         }
 242 }
 243
 244 long GetRevision()
 245 {
 246         char Revision[] = "$Revision$";
 247         char *s1 = Revision;
 248         char *savept;
 249         char *v2 = strtok_r(s1," ",&savept);
 250         s1 = savept;
 251         v2 = strtok_r(s1," ",&savept);
 252         s1 = savept;
 253         return (long)(atof(v2)*10000);
 254 }
 255
 256
 257 std::string getservername()
 258 {
 259         return ServerName;
 260 }
 261
 262 std::string getserverdesc()
 263 {
 264         return ServerDesc;
 265 }
 266
 267 std::string getnetworkname()
 268 {
 269         return Network;
 270 }
 271
 272 std::string getadminname()
 273 {
 274         return AdminName;
 275 }
 276
 277 std::string getadminemail()
 278 {
 279         return AdminEmail;
 280 }
 281
 282 std::string getadminnick()
 283 {
 284         return AdminNick;
 285 }
 286
 287 void log(int level,char *text, ...)
 288 {
 289         char textbuffer[MAXBUF];
 290         va_list argsPtr;
 291         time_t rawtime;
 292         struct tm * timeinfo;
 293         if (level < LogLevel)
 294                 return;
 295
 296         time(&rawtime);
 297         timeinfo = localtime (&rawtime);
 298
 299         if (log_file)
 300         {
 301                 char b[MAXBUF];
 302                 va_start (argsPtr, text);
 303                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 304                 va_end(argsPtr);
 305                 strlcpy(b,asctime(timeinfo),MAXBUF);
 306                 b[24] = ':';    // we know this is the end of the time string
 307                 fprintf(log_file,"%s %s\n",b,textbuffer);
 308                 if (nofork)
 309                 {
 310                         // nofork enabled? display it on terminal too
 311                         printf("%s %s\n",b,textbuffer);
 312                 }
 313         }
 314 }
 315
 316 void readfile(file_cache &F, const char* fname)
 317 {
 318         FILE* file;
 319         char linebuf[MAXBUF];
 320
 321         log(DEBUG,"readfile: loading %s",fname);
 322         F.clear();
 323         file =  fopen(fname,"r");
 324         if (file)
 325         {
 326                 while (!feof(file))
 327                 {
 328                         fgets(linebuf,sizeof(linebuf),file);
 329                         linebuf[strlen(linebuf)-1]='\0';
 330                         if (linebuf[0] == 0)
 331                         {
 332                                 strcpy(linebuf,"  ");
 333                         }
 334                         if (!feof(file))
 335                         {
 336                                 F.push_back(linebuf);
 337                         }
 338                 }
 339                 fclose(file);
 340         }
 341         else
 342         {
 343                 log(DEBUG,"readfile: failed to load file: %s",fname);
 344         }
 345         log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
 346 }
 347
 348 void ReadConfig(bool bail, userrec* user)
 349 {
 350         char dbg[MAXBUF],pauseval[MAXBUF],Value[MAXBUF],timeout[MAXBUF],NB[MAXBUF],flood[MAXBUF],MW[MAXBUF];
 351         char AH[MAXBUF],AP[MAXBUF],AF[MAXBUF],DNT[MAXBUF],pfreq[MAXBUF],thold[MAXBUF];
 352         ConnectClass c;
 353         std::stringstream errstr;
 354
 355         if (!LoadConf(CONFIG_FILE,&config_f,&errstr))
 356         {
 357                 errstr.seekg(0);
 358                 if (bail)
 359                 {
 360                         printf("There were errors in your configuration:\n%s",errstr.str().c_str());
 361                         Exit(0);
 362                 }
 363                 else
 364                 {
 365                         char dataline[1024];
 366                         if (user)
 367                         {
 368                                 WriteServ(user->fd,"NOTICE %s :There were errors in the configuration file:",user->nick);
 369                                 while (!errstr.eof())
 370                                 {
 371                                         errstr.getline(dataline,1024);
 372                                         WriteServ(user->fd,"NOTICE %s :%s",user->nick,dataline);
 373                                 }
 374                         }
 375                         else
 376                         {
 377                                 WriteOpers("There were errors in the configuration file:",user->nick);
 378                                 while (!errstr.eof())
 379                                 {
 380                                         errstr.getline(dataline,1024);
 381                                         WriteOpers(dataline);
 382                                 }
 383                         }
 384                         return;
 385                 }
 386         }
 387
 388         ConfValue("server","name",0,ServerName,&config_f);
 389         ConfValue("server","description",0,ServerDesc,&config_f);
 390         ConfValue("server","network",0,Network,&config_f);
 391         ConfValue("admin","name",0,AdminName,&config_f);
 392         ConfValue("admin","email",0,AdminEmail,&config_f);
 393         ConfValue("admin","nick",0,AdminNick,&config_f);
 394         ConfValue("files","motd",0,motd,&config_f);
 395         ConfValue("files","rules",0,rules,&config_f);
 396         ConfValue("power","diepass",0,diepass,&config_f);
 397         ConfValue("power","pause",0,pauseval,&config_f);
 398         ConfValue("power","restartpass",0,restartpass,&config_f);
 399         ConfValue("options","prefixquit",0,PrefixQuit,&config_f);
 400         ConfValue("die","value",0,DieValue,&config_f);
 401         ConfValue("options","loglevel",0,dbg,&config_f);
 402         ConfValue("options","netbuffersize",0,NB,&config_f);
 403         ConfValue("options","maxwho",0,MW,&config_f);
 404         ConfValue("options","allowhalfop",0,AH,&config_f);
 405         ConfValue("options","allowprotect",0,AP,&config_f);
 406         ConfValue("options","allowfounder",0,AF,&config_f);
 407         ConfValue("dns","server",0,DNSServer,&config_f);
 408         ConfValue("dns","timeout",0,DNT,&config_f);
 409         ConfValue("options","moduledir",0,ModPath,&config_f);
 410         ConfValue("disabled","commands",0,DisabledCommands,&config_f);
 411
 412         NetBufferSize = atoi(NB);
 413         MaxWhoResults = atoi(MW);
 414         dns_timeout = atoi(DNT);
 415         if (!dns_timeout)
 416                 dns_timeout = 5;
 417         if (!DNSServer[0])
 418                 strlcpy(DNSServer,"127.0.0.1",MAXBUF);
 419         if (!ModPath[0])
 420                 strlcpy(ModPath,MOD_PATH,MAXBUF);
 421         AllowHalfop = ((!strcasecmp(AH,"true")) || (!strcasecmp(AH,"1")) || (!strcasecmp(AH,"yes")));
 422         AllowProtect = ((!strcasecmp(AP,"true")) || (!strcasecmp(AP,"1")) || (!strcasecmp(AP,"yes")));
 423         AllowFounder = ((!strcasecmp(AF,"true")) || (!strcasecmp(AF,"1")) || (!strcasecmp(AF,"yes")));
 424         if ((!NetBufferSize) || (NetBufferSize > 65535) || (NetBufferSize < 1024))
 425         {
 426                 log(DEFAULT,"No NetBufferSize specified or size out of range, setting to default of 10240.");
 427                 NetBufferSize = 10240;
 428         }
 429         if ((!MaxWhoResults) || (MaxWhoResults > 65535) || (MaxWhoResults < 1))
 430         {
 431                 log(DEFAULT,"No MaxWhoResults specified or size out of range, setting to default of 128.");
 432                 MaxWhoResults = 128;
 433         }
 434         if (!strcmp(dbg,"debug"))
 435                 LogLevel = DEBUG;
 436         if (!strcmp(dbg,"verbose"))
 437                 LogLevel = VERBOSE;
 438         if (!strcmp(dbg,"default"))
 439                 LogLevel = DEFAULT;
 440         if (!strcmp(dbg,"sparse"))
 441                 LogLevel = SPARSE;
 442         if (!strcmp(dbg,"none"))
 443                 LogLevel = NONE;
 444         readfile(MOTD,motd);
 445         log(DEFAULT,"Reading message of the day...");
 446         readfile(RULES,rules);
 447         log(DEFAULT,"Reading connect classes...");
 448         Classes.clear();
 449         for (int i = 0; i < ConfValueEnum("connect",&config_f); i++)
 450         {
 451                 strcpy(Value,"");
 452                 ConfValue("connect","allow",i,Value,&config_f);
 453                 ConfValue("connect","timeout",i,timeout,&config_f);
 454                 ConfValue("connect","flood",i,flood,&config_f);
 455                 ConfValue("connect","pingfreq",i,pfreq,&config_f);
 456                 ConfValue("connect","threshold",i,thold,&config_f);
 457                 if (Value[0])
 458                 {
 459                         strlcpy(c.host,Value,MAXBUF);
 460                         c.type = CC_ALLOW;
 461                         strlcpy(Value,"",MAXBUF);
 462                         ConfValue("connect","password",i,Value,&config_f);
 463                         strlcpy(c.pass,Value,MAXBUF);
 464                         c.registration_timeout = 90; // default is 2 minutes
 465                         c.pingtime = 120;
 466                         c.flood = atoi(flood);
 467                         c.threshold = 5;
 468                         if (atoi(thold)>0)
 469                         {
 470                                 c.threshold = atoi(thold);
 471                         }
 472                         if (atoi(timeout)>0)
 473                         {
 474                                 c.registration_timeout = atoi(timeout);
 475                         }
 476                         if (atoi(pfreq)>0)
 477                         {
 478                                 c.pingtime = atoi(pfreq);
 479                         }
 480                         Classes.push_back(c);
 481                         log(DEBUG,"Read connect class type ALLOW, host=%s password=%s timeout=%lu flood=%lu",c.host,c.pass,(unsigned long)c.registration_timeout,(unsigned long)c.flood);
 482                 }
 483                 else
 484                 {
 485                         ConfValue("connect","deny",i,Value,&config_f);
 486                         strlcpy(c.host,Value,MAXBUF);
 487                         c.type = CC_DENY;
 488                         Classes.push_back(c);
 489                         log(DEBUG,"Read connect class type DENY, host=%s",c.host);
 490                 }
 491
 492         }
 493         log(DEFAULT,"Reading K lines,Q lines and Z lines from config...");
 494         read_xline_defaults();
 495         log(DEFAULT,"Applying K lines, Q lines and Z lines...");
 496         apply_lines();
 497         log(DEFAULT,"Done reading configuration file, InspIRCd is now starting.");
 498         if (!bail)
 499         {
 500                 log(DEFAULT,"Adding and removing modules due to rehash...");
 501
 502                 std::vector<std::string> old_module_names, new_module_names, added_modules, removed_modules;
 503
 504                 // store the old module names
 505                 for (std::vector<std::string>::iterator t = module_names.begin(); t != module_names.end(); t++)
 506                 {
 507                         old_module_names.push_back(*t);
 508                 }
 509
 510                 // get the new module names
 511                 for (int count2 = 0; count2 < ConfValueEnum("module",&config_f); count2++)
 512                 {
 513                         ConfValue("module","name",count2,Value,&config_f);
 514                         new_module_names.push_back(Value);
 515                 }
 516
 517                 // now create a list of new modules that are due to be loaded
 518                 // and a seperate list of modules which are due to be unloaded
 519                 for (std::vector<std::string>::iterator _new = new_module_names.begin(); _new != new_module_names.end(); _new++)
 520                 {
 521                         bool added = true;
 522                         for (std::vector<std::string>::iterator old = old_module_names.begin(); old != old_module_names.end(); old++)
 523                         {
 524                                 if (*old == *_new)
 525                                         added = false;
 526                         }
 527                         if (added)
 528                                 added_modules.push_back(*_new);
 529                 }
 530                 for (std::vector<std::string>::iterator oldm = old_module_names.begin(); oldm != old_module_names.end(); oldm++)
 531                 {
 532                         bool removed = true;
 533                         for (std::vector<std::string>::iterator newm = new_module_names.begin(); newm != new_module_names.end(); newm++)
 534                         {
 535                                 if (*newm == *oldm)
 536                                         removed = false;
 537                         }
 538                         if (removed)
 539                                 removed_modules.push_back(*oldm);
 540                 }
 541                 // now we have added_modules, a vector of modules to be loaded, and removed_modules, a vector of modules
 542                 // to be removed.
 543                 int rem = 0, add = 0;
 544                 if (!removed_modules.empty())
 545                 for (std::vector<std::string>::iterator removing = removed_modules.begin(); removing != removed_modules.end(); removing++)
 546                 {
 547                         if (UnloadModule(removing->c_str()))
 548                         {
 549                                 WriteOpers("*** REHASH UNLOADED MODULE: %s",removing->c_str());
 550                                 WriteServ(user->fd,"973 %s %s :Module %s successfully unloaded.",user->nick, removing->c_str(), removing->c_str());
 551                                 rem++;
 552                         }
 553                         else
 554                         {
 555                                 WriteServ(user->fd,"972 %s %s :Failed to unload module %s: %s",user->nick, removing->c_str(), removing->c_str(), ModuleError());
 556                         }
 557                 }
 558                 if (!added_modules.empty())
 559                 for (std::vector<std::string>::iterator adding = added_modules.begin(); adding != added_modules.end(); adding++)
 560                 {
 561                         if (LoadModule(adding->c_str()))
 562                         {
 563                                 WriteOpers("*** REHASH LOADED MODULE: %s",adding->c_str());
 564                                 WriteServ(user->fd,"975 %s %s :Module %s successfully loaded.",user->nick, adding->c_str(), adding->c_str());
 565                                 add++;
 566                         }
 567                         else
 568                         {
 569                                 WriteServ(user->fd,"974 %s %s :Failed to load module %s: %s",user->nick, adding->c_str(), adding->c_str(), ModuleError());
 570                         }
 571                 }
 572                 log(DEFAULT,"Successfully unloaded %lu of %lu modules and loaded %lu of %lu modules.",(unsigned long)rem,(unsigned long)removed_modules.size(),(unsigned long)add,(unsigned long)added_modules.size());
 573         }
 574 }
 575
 576 /* write formatted text to a socket, in same format as printf */
 577
 578 void Write(int sock,char *text, ...)
 579 {
 580         if (sock == FD_MAGIC_NUMBER)
 581                 return;
 582         if (!text)
 583         {
 584                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 585                 return;
 586         }
 587         char textbuffer[MAXBUF];
 588         va_list argsPtr;
 589         char tb[MAXBUF];
 590
 591         va_start (argsPtr, text);
 592         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 593         va_end(argsPtr);
 594         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 595         chop(tb);
 596         if ((sock != -1) && (sock != FD_MAGIC_NUMBER))
 597         {
 598                 int MOD_RESULT = 0;
 599                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes > 512 ? 512 : bytes));
 600                 if (!MOD_RESULT)
 601                         write(sock,tb,bytes > 512 ? 512 : bytes);
 602                 if (fd_ref_table[sock])
 603                 {
 604                         fd_ref_table[sock]->bytes_out += (bytes > 512 ? 512 : bytes);
 605                         fd_ref_table[sock]->cmds_out++;
 606                 }
 607                 statsSent += (bytes > 512 ? 512 : bytes);
 608         }
 609 }
 610
 611 /* write a server formatted numeric response to a single socket */
 612
 613 void WriteServ(int sock, char* text, ...)
 614 {
 615         if (sock == FD_MAGIC_NUMBER)
 616                 return;
 617         if (!text)
 618         {
 619                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 620                 return;
 621         }
 622         char textbuffer[MAXBUF],tb[MAXBUF];
 623         va_list argsPtr;
 624         va_start (argsPtr, text);
 625
 626         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 627         va_end(argsPtr);
 628         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",ServerName,textbuffer);
 629         chop(tb);
 630         if ((sock != -1) && (sock != FD_MAGIC_NUMBER))
 631         {
 632                 int MOD_RESULT = 0;
 633                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes > 512 ? 512 : bytes));
 634                 if (!MOD_RESULT)
 635                         write(sock,tb,bytes > 512 ? 512 : bytes);
 636                 if (fd_ref_table[sock])
 637                 {
 638                         fd_ref_table[sock]->bytes_out += (bytes > 512 ? 512 : bytes);
 639                         fd_ref_table[sock]->cmds_out++;
 640                 }
 641                 statsSent += (bytes > 512 ? 512 : bytes);
 642         }
 643 }
 644
 645 /* write text from an originating user to originating user */
 646
 647 void WriteFrom(int sock, userrec *user,char* text, ...)
 648 {
 649         if (sock == FD_MAGIC_NUMBER)
 650                 return;
 651         if ((!text) || (!user))
 652         {
 653                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 654                 return;
 655         }
 656         char textbuffer[MAXBUF],tb[MAXBUF];
 657         va_list argsPtr;
 658         va_start (argsPtr, text);
 659
 660         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 661         va_end(argsPtr);
 662         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 663         chop(tb);
 664         if ((sock != -1) && (sock != FD_MAGIC_NUMBER))
 665         {
 666                 int MOD_RESULT = 0;
 667                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes > 512 ? 512 : bytes));
 668                 if (!MOD_RESULT)
 669                         write(sock,tb,bytes > 512 ? 512 : bytes);
 670                 if (fd_ref_table[sock])
 671                 {
 672                         fd_ref_table[sock]->bytes_out += (bytes > 512 ? 512 : bytes);
 673                         fd_ref_table[sock]->cmds_out++;
 674                 }
 675                 statsSent += (bytes > 512 ? 512 : bytes);
 676         }
 677 }
 678
 679 /* write text to an destination user from a source user (e.g. user privmsg) */
 680
 681 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 682 {
 683         if ((!dest) || (!data))
 684         {
 685                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 686                 return;
 687         }
 688         if (dest->fd == FD_MAGIC_NUMBER)
 689                 return;
 690         char textbuffer[MAXBUF],tb[MAXBUF];
 691         va_list argsPtr;
 692         va_start (argsPtr, data);
 693         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 694         va_end(argsPtr);
 695         chop(tb);
 696
 697         // if no source given send it from the server.
 698         if (!source)
 699         {
 700                 WriteServ(dest->fd,":%s %s",ServerName,textbuffer);
 701         }
 702         else
 703         {
 704                 WriteFrom(dest->fd,source,"%s",textbuffer);
 705         }
 706 }
 707
 708 /* write formatted text from a source user to all users on a channel
 709  * including the sender (NOT for privmsg, notice etc!) */
 710
 711 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 712 {
 713         if ((!Ptr) || (!user) || (!text))
 714         {
 715                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 716                 return;
 717         }
 718         char textbuffer[MAXBUF];
 719         va_list argsPtr;
 720         va_start (argsPtr, text);
 721         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 722         va_end(argsPtr);
 723
 724         std::vector<char*> *ulist = Ptr->GetUsers();
 725         for (int j = 0; j < ulist->size(); j++)
 726         {
 727                 char* o = (*ulist)[j];
 728                 userrec* otheruser = (userrec*)o;
 729                 if (otheruser->fd != FD_MAGIC_NUMBER)
 730                         WriteTo(user,otheruser,"%s",textbuffer);
 731         }
 732 }
 733
 734 /* write formatted text from a source user to all users on a channel
 735  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 736  * users on remote servers */
 737
 738 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 739 {
 740         if ((!Ptr) || (!text))
 741         {
 742                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 743                 return;
 744         }
 745         char textbuffer[MAXBUF];
 746         va_list argsPtr;
 747         va_start (argsPtr, text);
 748         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 749         va_end(argsPtr);
 750
 751         std::vector<char*> *ulist = Ptr->GetUsers();
 752         for (int j = 0; j < ulist->size(); j++)
 753         {
 754                 char* o = (*ulist)[j];
 755                 userrec* otheruser = (userrec*)o;
 756                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 757                 {
 758                         if (!user)
 759                         {
 760                                 WriteServ(otheruser->fd,"%s",textbuffer);
 761                         }
 762                         else
 763                         {
 764                                 WriteTo(user,otheruser,"%s",textbuffer);
 765                         }
 766                 }
 767         }
 768 }
 769
 770
 771 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 772 {
 773         if ((!Ptr) || (!text))
 774         {
 775                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 776                 return;
 777         }
 778         char textbuffer[MAXBUF];
 779         va_list argsPtr;
 780         va_start (argsPtr, text);
 781         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 782         va_end(argsPtr);
 783
 784
 785         std::vector<char*> *ulist = Ptr->GetUsers();
 786         for (int j = 0; j < ulist->size(); j++)
 787         {
 788                 char* o = (*ulist)[j];
 789                 userrec* otheruser = (userrec*)o;
 790                 if (otheruser->fd != FD_MAGIC_NUMBER)
 791                         WriteServ(otheruser->fd,"%s",textbuffer);
 792         }
 793 }
 794
 795
 796 /* write formatted text from a source user to all users on a channel except
 797  * for the sender (for privmsg etc) */
 798
 799 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 800 {
 801         if ((!Ptr) || (!user) || (!text))
 802         {
 803                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 804                 return;
 805         }
 806         char textbuffer[MAXBUF];
 807         va_list argsPtr;
 808         va_start (argsPtr, text);
 809         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 810         va_end(argsPtr);
 811
 812         std::vector<char*> *ulist = Ptr->GetUsers();
 813         for (int j = 0; j < ulist->size(); j++)
 814         {
 815                 char* o = (*ulist)[j];
 816                 userrec* otheruser = (userrec*)o;
 817                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 818                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 819         }
 820 }
 821
 822
 823 std::string GetServerDescription(char* servername)
 824 {
 825         for (int j = 0; j < 32; j++)
 826         {
 827                 if (me[j] != NULL)
 828                 {
 829                         for (int k = 0; k < me[j]->connectors.size(); k++)
 830                         {
 831                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),servername))
 832                                 {
 833                                         return me[j]->connectors[k].GetDescription();
 834                                 }
 835                         }
 836                 }
 837                 return ServerDesc; // not a remote server that can be found, it must be me.
 838         }
 839 }
 840
 841
 842 /* write a formatted string to all users who share at least one common
 843  * channel, including the source user e.g. for use in NICK */
 844
 845 void WriteCommon(userrec *u, char* text, ...)
 846 {
 847         if (!u)
 848         {
 849                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 850                 return;
 851         }
 852
 853         if (u->registered != 7) {
 854                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 855                 return;
 856         }
 857
 858         char textbuffer[MAXBUF];
 859         va_list argsPtr;
 860         va_start (argsPtr, text);
 861         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 862         va_end(argsPtr);
 863
 864         // FIX: Stops a message going to the same person more than once
 865         bzero(&already_sent,65536);
 866
 867         bool sent_to_at_least_one = false;
 868
 869         for (int i = 0; i < MAXCHANS; i++)
 870         {
 871                 if (u->chans[i].channel)
 872                 {
 873                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 874                         for (int j = 0; j < ulist->size(); j++)
 875                         {
 876                                 char* o = (*ulist)[j];
 877                                 userrec* otheruser = (userrec*)o;
 878                                 if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 879                                 {
 880                                         already_sent[otheruser->fd] = 1;
 881                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 882                                         sent_to_at_least_one = true;
 883                                 }
 884                         }
 885                 }
 886         }
 887         // if the user was not in any channels, no users will receive the text. Make sure the user
 888         // receives their OWN message for WriteCommon
 889         if (!sent_to_at_least_one)
 890         {
 891                 WriteFrom(u->fd,u,"%s",textbuffer);
 892         }
 893 }
 894
 895 /* write a formatted string to all users who share at least one common
 896  * channel, NOT including the source user e.g. for use in QUIT */
 897
 898 void WriteCommonExcept(userrec *u, char* text, ...)
 899 {
 900         if (!u)
 901         {
 902                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 903                 return;
 904         }
 905
 906         if (u->registered != 7) {
 907                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 908                 return;
 909         }
 910
 911         char textbuffer[MAXBUF];
 912         va_list argsPtr;
 913         va_start (argsPtr, text);
 914         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 915         va_end(argsPtr);
 916
 917         bzero(&already_sent,65536);
 918
 919         for (int i = 0; i < MAXCHANS; i++)
 920         {
 921                 if (u->chans[i].channel)
 922                 {
 923                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 924                         for (int j = 0; j < ulist->size(); j++)
 925                         {
 926                                 char* o = (*ulist)[j];
 927                                 userrec* otheruser = (userrec*)o;
 928                                 if (u != otheruser)
 929                                 {
 930                                         if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 931                                         {
 932                                                 already_sent[otheruser->fd] = 1;
 933                                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 934                                         }
 935                                 }
 936                         }
 937                 }
 938         }
 939 }
 940
 941 void WriteOpers(char* text, ...)
 942 {
 943         if (!text)
 944         {
 945                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 946                 return;
 947         }
 948
 949         char textbuffer[MAXBUF];
 950         va_list argsPtr;
 951         va_start (argsPtr, text);
 952         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 953         va_end(argsPtr);
 954
 955         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 956         {
 957                 userrec* a = *i;
 958                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 959                 {
 960                         if (strchr(a->modes,'s'))
 961                         {
 962                                 // send server notices to all with +s
 963                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 964                         }
 965                 }
 966         }
 967 }
 968
 969 void NoticeAllOpers(userrec *source, bool local_only, char* text, ...)
 970 {
 971         if ((!text) || (!source))
 972         {
 973                 log(DEFAULT,"*** BUG *** NoticeAllOpers was given an invalid parameter");
 974                 return;
 975         }
 976
 977         char textbuffer[MAXBUF];
 978         va_list argsPtr;
 979         va_start (argsPtr, text);
 980         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 981         va_end(argsPtr);
 982
 983         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 984         {
 985                 userrec* a = *i;
 986                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 987                 {
 988                         if (strchr(a->modes,'s'))
 989                         {
 990                                 // send server notices to all with +s
 991                                 WriteServ(a->fd,"NOTICE %s :*** Notice From %s: %s",a->nick,source->nick,textbuffer);
 992                         }
 993                 }
 994         }
 995
 996         if (!local_only)
 997         {
 998                 char buffer[MAXBUF];
 999                 snprintf(buffer,MAXBUF,"V %s @* :%s",source->nick,textbuffer);
1000                 NetSendToAll(buffer);
1001         }
1002 }
1003
1004 // returns TRUE of any users on channel C occupy server 'servername'.
1005
1006 bool ChanAnyOnThisServer(chanrec *c,char* servername)
1007 {
1008         log(DEBUG,"ChanAnyOnThisServer");
1009
1010         std::vector<char*> *ulist = c->GetUsers();
1011         for (int j = 0; j < ulist->size(); j++)
1012         {
1013                 char* o = (*ulist)[j];
1014                 userrec* user = (userrec*)o;
1015                 if (!strcasecmp(user->server,servername))
1016                         return true;
1017         }
1018         return false;
1019 }
1020
1021 // returns true if user 'u' shares any common channels with any users on server 'servername'
1022
1023 bool CommonOnThisServer(userrec* u,const char* servername)
1024 {
1025         log(DEBUG,"ChanAnyOnThisServer");
1026
1027         for (int i = 0; i < MAXCHANS; i++)
1028         {
1029                 if (u->chans[i].channel)
1030                 {
1031                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
1032                         for (int j = 0; j < ulist->size(); j++)
1033                         {
1034                                 char* o = (*ulist)[j];
1035                                 userrec* user = (userrec*)o;
1036                                 if (!strcasecmp(user->server,servername))
1037                                         return true;
1038                         }
1039                 }
1040         }
1041         return false;
1042 }
1043
1044
1045 void NetSendToCommon(userrec* u, char* s)
1046 {
1047         char buffer[MAXBUF];
1048         snprintf(buffer,MAXBUF,"%s",s);
1049
1050         log(DEBUG,"NetSendToCommon: '%s' '%s'",u->nick,s);
1051
1052         std::string msg = buffer;
1053         FOREACH_MOD OnPacketTransmit(msg,s);
1054         strlcpy(buffer,msg.c_str(),MAXBUF);
1055
1056         for (int j = 0; j < 32; j++)
1057         {
1058                 if (me[j] != NULL)
1059                 {
1060                         for (int k = 0; k < me[j]->connectors.size(); k++)
1061                         {
1062                                 if (CommonOnThisServer(u,me[j]->connectors[k].GetServerName().c_str()))
1063                                 {
1064                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1065                                 }
1066                         }
1067                 }
1068         }
1069 }
1070
1071
1072 void NetSendToAll(char* s)
1073 {
1074         char buffer[MAXBUF];
1075         snprintf(buffer,MAXBUF,"%s",s);
1076
1077         log(DEBUG,"NetSendToAll: '%s'",s);
1078
1079         std::string msg = buffer;
1080         FOREACH_MOD OnPacketTransmit(msg,s);
1081         strlcpy(buffer,msg.c_str(),MAXBUF);
1082
1083         for (int j = 0; j < 32; j++)
1084         {
1085                 if (me[j] != NULL)
1086                 {
1087                         for (int k = 0; k < me[j]->connectors.size(); k++)
1088                         {
1089                                 me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1090                         }
1091                 }
1092         }
1093 }
1094
1095 void NetSendToAllAlive(char* s)
1096 {
1097         char buffer[MAXBUF];
1098         snprintf(buffer,MAXBUF,"%s",s);
1099
1100         log(DEBUG,"NetSendToAllAlive: '%s'",s);
1101
1102         std::string msg = buffer;
1103         FOREACH_MOD OnPacketTransmit(msg,s);
1104         strlcpy(buffer,msg.c_str(),MAXBUF);
1105
1106         for (int j = 0; j < 32; j++)
1107         {
1108                 if (me[j] != NULL)
1109                 {
1110                         for (int k = 0; k < me[j]->connectors.size(); k++)
1111                         {
1112                                 if (me[j]->connectors[k].GetState() != STATE_DISCONNECTED)
1113                                 {
1114                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1115                                 }
1116                                 else
1117                                 {
1118                                         log(DEBUG,"%s is dead, not sending to it.",me[j]->connectors[k].GetServerName().c_str());
1119                                 }
1120                         }
1121                 }
1122         }
1123 }
1124
1125
1126 void NetSendToOne(char* target,char* s)
1127 {
1128         char buffer[MAXBUF];
1129         snprintf(buffer,MAXBUF,"%s",s);
1130
1131         log(DEBUG,"NetSendToOne: '%s' '%s'",target,s);
1132
1133         std::string msg = buffer;
1134         FOREACH_MOD OnPacketTransmit(msg,s);
1135         strlcpy(buffer,msg.c_str(),MAXBUF);
1136
1137         for (int j = 0; j < 32; j++)
1138         {
1139                 if (me[j] != NULL)
1140                 {
1141                         for (int k = 0; k < me[j]->connectors.size(); k++)
1142                         {
1143                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1144                                 {
1145                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1146                                 }
1147                         }
1148                 }
1149         }
1150 }
1151
1152 void NetSendToAllExcept(const char* target,char* s)
1153 {
1154         char buffer[MAXBUF];
1155         snprintf(buffer,MAXBUF,"%s",s);
1156
1157         log(DEBUG,"NetSendToAllExcept: '%s' '%s'",target,s);
1158
1159         std::string msg = buffer;
1160         FOREACH_MOD OnPacketTransmit(msg,s);
1161         strlcpy(buffer,msg.c_str(),MAXBUF);
1162
1163         for (int j = 0; j < 32; j++)
1164         {
1165                 if (me[j] != NULL)
1166                 {
1167                         for (int k = 0; k < me[j]->connectors.size(); k++)
1168                         {
1169                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),target))
1170                                 {
1171                                         me[j]->SendPacket(buffer,me[j]->connectors[k].GetServerName().c_str());
1172                                 }
1173                         }
1174                 }
1175         }
1176 }
1177
1178
1179 void WriteMode(const char* modes, int flags, const char* text, ...)
1180 {
1181         if ((!text) || (!modes) || (!flags))
1182         {
1183                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
1184                 return;
1185         }
1186
1187         char textbuffer[MAXBUF];
1188         va_list argsPtr;
1189         va_start (argsPtr, text);
1190         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1191         va_end(argsPtr);
1192         int modelen = strlen(modes);
1193
1194         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1195         {
1196                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1197                 {
1198                         bool send_to_user = false;
1199
1200                         if (flags == WM_AND)
1201                         {
1202                                 send_to_user = true;
1203                                 for (int n = 0; n < modelen; n++)
1204                                 {
1205                                         if (!hasumode(i->second,modes[n]))
1206                                         {
1207                                                 send_to_user = false;
1208                                                 break;
1209                                         }
1210                                 }
1211                         }
1212                         else if (flags == WM_OR)
1213                         {
1214                                 send_to_user = false;
1215                                 for (int n = 0; n < modelen; n++)
1216                                 {
1217                                         if (hasumode(i->second,modes[n]))
1218                                         {
1219                                                 send_to_user = true;
1220                                                 break;
1221                                         }
1222                                 }
1223                         }
1224
1225                         if (send_to_user)
1226                         {
1227                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
1228                         }
1229                 }
1230         }
1231 }
1232
1233
1234 void NoticeAll(userrec *source, bool local_only, char* text, ...)
1235 {
1236         if ((!text) || (!source))
1237         {
1238                 log(DEFAULT,"*** BUG *** NoticeAll was given an invalid parameter");
1239                 return;
1240         }
1241
1242         char textbuffer[MAXBUF];
1243         va_list argsPtr;
1244         va_start (argsPtr, text);
1245         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1246         va_end(argsPtr);
1247
1248         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1249         {
1250                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1251                 {
1252                         WriteFrom(i->second->fd,source,"NOTICE $* :%s",textbuffer);
1253                 }
1254         }
1255
1256         if (!local_only)
1257         {
1258                 char buffer[MAXBUF];
1259                 snprintf(buffer,MAXBUF,"V %s * :%s",source->nick,textbuffer);
1260                 NetSendToAll(buffer);
1261         }
1262
1263 }
1264
1265 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
1266 {
1267         if ((!text) || (!source))
1268         {
1269                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
1270                 return;
1271         }
1272
1273         char textbuffer[MAXBUF];
1274         va_list argsPtr;
1275         va_start (argsPtr, text);
1276         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
1277         va_end(argsPtr);
1278
1279         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1280         {
1281                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
1282                 {
1283                         if (strchr(i->second->modes,'w'))
1284                         {
1285                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
1286                         }
1287                 }
1288         }
1289
1290         if (!local_only)
1291         {
1292                 char buffer[MAXBUF];
1293                 snprintf(buffer,MAXBUF,"@ %s :%s",source->nick,textbuffer);
1294                 NetSendToAll(buffer);
1295         }
1296 }
1297
1298 /* convert a string to lowercase. Note following special circumstances
1299  * taken from RFC 1459. Many "official" server branches still hold to this
1300  * rule so i will too;
1301  *
1302  *  Because of IRC's scandanavian origin, the characters {}| are
1303  *  considered to be the lower case equivalents of the characters []\,
1304  *  respectively. This is a critical issue when determining the
1305  *  equivalence of two nicknames.
1306  */
1307
1308 void strlower(char *n)
1309 {
1310         if (n)
1311         {
1312                 for (char* t = n; *t; t++)
1313                         *t = lowermap[*t];
1314         }
1315 }
1316
1317
1318
1319 /* Find a user record by nickname and return a pointer to it */
1320
1321 userrec* Find(std::string nick)
1322 {
1323         user_hash::iterator iter = clientlist.find(nick);
1324
1325         if (iter == clientlist.end())
1326                 /* Couldn't find it */
1327                 return NULL;
1328
1329         return iter->second;
1330 }
1331
1332 /* find a channel record by channel name and return a pointer to it */
1333
1334 chanrec* FindChan(const char* chan)
1335 {
1336         if (!chan)
1337         {
1338                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
1339                 return NULL;
1340         }
1341
1342         chan_hash::iterator iter = chanlist.find(chan);
1343
1344         if (iter == chanlist.end())
1345                 /* Couldn't find it */
1346                 return NULL;
1347
1348         return iter->second;
1349 }
1350
1351
1352 long GetMaxBans(char* name)
1353 {
1354         char CM[MAXBUF];
1355         for (int count = 0; count < ConfValueEnum("banlist",&config_f); count++)
1356         {
1357                 ConfValue("banlist","chan",count,CM,&config_f);
1358                 if (match(name,CM))
1359                 {
1360                         ConfValue("banlist","limit",count,CM,&config_f);
1361                         return atoi(CM);
1362                 }
1363         }
1364         return 64;
1365 }
1366
1367
1368 void purge_empty_chans(userrec* u)
1369 {
1370
1371         int go_again = 1, purge = 0;
1372
1373         // firstly decrement the count on each channel
1374         for (int f = 0; f < MAXCHANS; f++)
1375         {
1376                 if (u->chans[f].channel)
1377                 {
1378                         u->chans[f].channel->DecUserCounter();
1379                         u->chans[f].channel->DelUser((char*)u);
1380                 }
1381         }
1382
1383         for (int i = 0; i < MAXCHANS; i++)
1384         {
1385                 if (u->chans[i].channel)
1386                 {
1387                         if (!usercount(u->chans[i].channel))
1388                         {
1389                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
1390                                 /* kill the record */
1391                                 if (i2 != chanlist.end())
1392                                 {
1393                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
1394                                         if (i2->second)
1395                                                 delete i2->second;
1396                                         chanlist.erase(i2);
1397                                         go_again = 1;
1398                                         purge++;
1399                                         u->chans[i].channel = NULL;
1400                                 }
1401                         }
1402                         else
1403                         {
1404                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
1405                         }
1406                 }
1407         }
1408         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
1409
1410         DeleteOper(u);
1411 }
1412
1413
1414 char scratch[MAXBUF];
1415 char sparam[MAXBUF];
1416
1417 char* chanmodes(chanrec *chan)
1418 {
1419         if (!chan)
1420         {
1421                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
1422                 strcpy(scratch,"");
1423                 return scratch;
1424         }
1425
1426         strcpy(scratch,"");
1427         strcpy(sparam,"");
1428         if (chan->noexternal)
1429         {
1430                 strlcat(scratch,"n",MAXMODES);
1431         }
1432         if (chan->topiclock)
1433         {
1434                 strlcat(scratch,"t",MAXMODES);
1435         }
1436         if (chan->key[0])
1437         {
1438                 strlcat(scratch,"k",MAXMODES);
1439         }
1440         if (chan->limit)
1441         {
1442                 strlcat(scratch,"l",MAXMODES);
1443         }
1444         if (chan->inviteonly)
1445         {
1446                 strlcat(scratch,"i",MAXMODES);
1447         }
1448         if (chan->moderated)
1449         {
1450                 strlcat(scratch,"m",MAXMODES);
1451         }
1452         if (chan->secret)
1453         {
1454                 strlcat(scratch,"s",MAXMODES);
1455         }
1456         if (chan->c_private)
1457         {
1458                 strlcat(scratch,"p",MAXMODES);
1459         }
1460         if (chan->key[0])
1461         {
1462                 strlcat(sparam," ",MAXBUF);
1463                 strlcat(sparam,chan->key,MAXBUF);
1464         }
1465         if (chan->limit)
1466         {
1467                 char foo[24];
1468                 sprintf(foo," %lu",(unsigned long)chan->limit);
1469                 strlcat(sparam,foo,MAXBUF);
1470         }
1471         if (*chan->custom_modes)
1472         {
1473                 strlcat(scratch,chan->custom_modes,MAXMODES);
1474                 for (int z = 0; chan->custom_modes[z] != 0; z++)
1475                 {
1476                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
1477                         if (extparam != "")
1478                         {
1479                                 strlcat(sparam," ",MAXBUF);
1480                                 strlcat(sparam,extparam.c_str(),MAXBUF);
1481                         }
1482                 }
1483         }
1484         log(DEBUG,"chanmodes: %s %s%s",chan->name,scratch,sparam);
1485         strlcat(scratch,sparam,MAXMODES);
1486         return scratch;
1487 }
1488
1489
1490 /* compile a userlist of a channel into a string, each nick seperated by
1491  * spaces and op, voice etc status shown as @ and + */
1492
1493 void userlist(userrec *user,chanrec *c)
1494 {
1495         if ((!c) || (!user))
1496         {
1497                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
1498                 return;
1499         }
1500
1501         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1502         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1503         {
1504                 if (has_channel(i->second,c))
1505                 {
1506                         if (isnick(i->second->nick))
1507                         {
1508                                 if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1509                                 {
1510                                         /* user is +i, and source not on the channel, does not show
1511                                          * nick in NAMES list */
1512                                         continue;
1513                                 }
1514                                 strlcat(list,cmode(i->second,c),MAXBUF);
1515                                 strlcat(list,i->second->nick,MAXBUF);
1516                                 strlcat(list," ",MAXBUF);
1517                                 if (strlen(list)>(480-NICKMAX))
1518                                 {
1519                                         /* list overflowed into
1520                                          * multiple numerics */
1521                                         WriteServ(user->fd,"%s",list);
1522                                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
1523                                 }
1524                         }
1525                 }
1526         }
1527         /* if whats left in the list isnt empty, send it */     if (list[strlen(list)-1] != ':')
1528         {
1529                 WriteServ(user->fd,"%s",list);
1530         }
1531 }
1532
1533 /* return a count of the users on a specific channel accounting for
1534  * invisible users who won't increase the count. e.g. for /LIST */
1535
1536 int usercount_i(chanrec *c)
1537 {
1538         int count = 0;
1539
1540         if (!c)
1541         {
1542                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1543                 return 0;
1544         }
1545
1546         strcpy(list,"");
1547         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1548         {
1549                 if (i->second)
1550                 {
1551                         if (has_channel(i->second,c))
1552                         {
1553                                 if (isnick(i->second->nick))
1554                                 {
1555                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1556                                         {
1557                                                 /* user is +i, and source not on the channel, does not show
1558                                                  * nick in NAMES list */
1559                                                 continue;
1560                                         }
1561                                         count++;
1562                                 }
1563                         }
1564                 }
1565         }
1566         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1567         return count;
1568 }
1569
1570
1571 int usercount(chanrec *c)
1572 {
1573         if (!c)
1574         {
1575                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1576                 return 0;
1577         }
1578         int count = c->GetUserCounter();
1579         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1580         return count;
1581 }
1582
1583
1584 /* add a channel to a user, creating the record for it if needed and linking
1585  * it to the user record */
1586
1587 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1588 {
1589         if ((!user) || (!cn))
1590         {
1591                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1592                 return 0;
1593         }
1594
1595         chanrec* Ptr;
1596         int created = 0;
1597         char cname[MAXBUF];
1598
1599         strncpy(cname,cn,MAXBUF);
1600
1601         // we MUST declare this wherever we use FOREACH_RESULT
1602         int MOD_RESULT = 0;
1603
1604         if (strlen(cname) > CHANMAX-1)
1605         {
1606                 cname[CHANMAX-1] = '\0';
1607         }
1608
1609         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1610
1611         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1612         {
1613                 return NULL; // already on the channel!
1614         }
1615
1616
1617         if (!FindChan(cname))
1618         {
1619                 MOD_RESULT = 0;
1620                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1621                 if (MOD_RESULT == 1) {
1622                         return NULL;
1623                 }
1624
1625                 /* create a new one */
1626                 log(DEBUG,"add_channel: creating: %s",cname);
1627                 {
1628                         chanlist[cname] = new chanrec();
1629
1630                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1631                         chanlist[cname]->topiclock = 1;
1632                         chanlist[cname]->noexternal = 1;
1633                         chanlist[cname]->created = TIME;
1634                         strcpy(chanlist[cname]->topic, "");
1635                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1636                         chanlist[cname]->topicset = 0;
1637                         Ptr = chanlist[cname];
1638                         log(DEBUG,"add_channel: created: %s",cname);
1639                         /* set created to 2 to indicate user
1640                          * is the first in the channel
1641                          * and should be given ops */
1642                         created = 2;
1643                 }
1644         }
1645         else
1646         {
1647                 /* channel exists, just fish out a pointer to its struct */
1648                 Ptr = FindChan(cname);
1649                 if (Ptr)
1650                 {
1651                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1652
1653                         // the override flag allows us to bypass channel modes
1654                         // and bans (used by servers)
1655                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1656                         {
1657                                 log(DEBUG,"Not overriding...");
1658                                 MOD_RESULT = 0;
1659                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1660                                 if (MOD_RESULT == 1) {
1661                                         return NULL;
1662                                 }
1663                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1664
1665                                 if (!MOD_RESULT)
1666                                 {
1667                                         log(DEBUG,"add_channel: checking key, invite, etc");
1668                                         MOD_RESULT = 0;
1669                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1670                                         if (MOD_RESULT == 0)
1671                                         {
1672                                                 if (Ptr->key[0])
1673                                                 {
1674                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1675                                                         if (!key)
1676                                                         {
1677                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1678                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1679                                                                 return NULL;
1680                                                         }
1681                                                         else
1682                                                         {
1683                                                                 if (strcasecmp(key,Ptr->key))
1684                                                                 {
1685                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1686                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1687                                                                         return NULL;
1688                                                                 }
1689                                                         }
1690                                                 }
1691                                                 log(DEBUG,"add_channel: no key");
1692                                         }
1693                                         MOD_RESULT = 0;
1694                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1695                                         if (MOD_RESULT == 0)
1696                                         {
1697                                                 if (Ptr->inviteonly)
1698                                                 {
1699                                                         log(DEBUG,"add_channel: channel is +i");
1700                                                         if (user->IsInvited(Ptr->name))
1701                                                         {
1702                                                                 /* user was invited to channel */
1703                                                                 /* there may be an optional channel NOTICE here */
1704                                                         }
1705                                                         else
1706                                                         {
1707                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1708                                                                 return NULL;
1709                                                         }
1710                                                 }
1711                                                 log(DEBUG,"add_channel: channel is not +i");
1712                                         }
1713                                         MOD_RESULT = 0;
1714                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1715                                         if (MOD_RESULT == 0)
1716                                         {
1717                                                 if (Ptr->limit)
1718                                                 {
1719                                                         if (usercount(Ptr) >= Ptr->limit)
1720                                                         {
1721                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1722                                                                 return NULL;
1723                                                         }
1724                                                 }
1725                                         }
1726                                         log(DEBUG,"add_channel: about to walk banlist");
1727                                         MOD_RESULT = 0;
1728                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1729                                         if (MOD_RESULT == 0)
1730                                         {
1731                                                 /* check user against the channel banlist */
1732                                                 if (Ptr)
1733                                                 {
1734                                                         if (Ptr->bans.size())
1735                                                         {
1736                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1737                                                                 {
1738                                                                         if (match(user->GetFullHost(),i->data))
1739                                                                         {
1740                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1741                                                                                 return NULL;
1742                                                                         }
1743                                                                 }
1744                                                         }
1745                                                 }
1746                                                 log(DEBUG,"add_channel: bans checked");
1747                                         }
1748
1749                                 }
1750
1751
1752                                 if ((Ptr) && (user))
1753                                 {
1754                                         user->RemoveInvite(Ptr->name);
1755                                 }
1756
1757                                 log(DEBUG,"add_channel: invites removed");
1758
1759                         }
1760                         else
1761                         {
1762                                 log(DEBUG,"Overridden checks");
1763                         }
1764
1765
1766                 }
1767                 created = 1;
1768         }
1769
1770         log(DEBUG,"Passed channel checks");
1771
1772         for (int index =0; index != MAXCHANS; index++)
1773         {
1774                 log(DEBUG,"Check location %d",index);
1775                 if (user->chans[index].channel == NULL)
1776                 {
1777                         log(DEBUG,"Adding into their channel list at location %d",index);
1778
1779                         if (created == 2)
1780                         {
1781                                 /* first user in is given ops */
1782                                 user->chans[index].uc_modes = UCMODE_OP;
1783                         }
1784                         else
1785                         {
1786                                 user->chans[index].uc_modes = 0;
1787                         }
1788                         user->chans[index].channel = Ptr;
1789                         Ptr->IncUserCounter();
1790                         Ptr->AddUser((char*)user);
1791                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1792
1793                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1794                         {
1795                                 // use the stamdard J token with no privilages.
1796                                 char buffer[MAXBUF];
1797                                 if (created == 2)
1798                                 {
1799                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1800                                 }
1801                                 else
1802                                 {
1803                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1804                                 }
1805                                 NetSendToAll(buffer);
1806                         }
1807
1808                         log(DEBUG,"Sent JOIN to client");
1809
1810                         if (Ptr->topicset)
1811                         {
1812                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1813                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1814                         }
1815                         userlist(user,Ptr);
1816                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1817                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1818                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1819                         FOREACH_MOD OnUserJoin(user,Ptr);
1820                         return Ptr;
1821                 }
1822         }
1823         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1824         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1825         return NULL;
1826 }
1827
1828 /* remove a channel from a users record, and remove the record from memory
1829  * if the channel has become empty */
1830
1831 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1832 {
1833         if ((!user) || (!cname))
1834         {
1835                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1836                 return NULL;
1837         }
1838
1839         chanrec* Ptr;
1840
1841         if ((!cname) || (!user))
1842         {
1843                 return NULL;
1844         }
1845
1846         Ptr = FindChan(cname);
1847
1848         if (!Ptr)
1849         {
1850                 return NULL;
1851         }
1852
1853         FOREACH_MOD OnUserPart(user,Ptr);
1854         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1855
1856         for (int i =0; i != MAXCHANS; i++)
1857         {
1858                 /* zap it from the channel list of the user */
1859                 if (user->chans[i].channel == Ptr)
1860                 {
1861                         if (reason)
1862                         {
1863                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1864
1865                                 if (!local)
1866                                 {
1867                                         char buffer[MAXBUF];
1868                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1869                                         NetSendToAll(buffer);
1870                                 }
1871
1872
1873                         }
1874                         else
1875                         {
1876                                 if (!local)
1877                                 {
1878                                         char buffer[MAXBUF];
1879                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1880                                         NetSendToAll(buffer);
1881                                 }
1882
1883                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1884                         }
1885                         user->chans[i].uc_modes = 0;
1886                         user->chans[i].channel = NULL;
1887                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1888                         break;
1889                 }
1890         }
1891
1892         Ptr->DecUserCounter();
1893         Ptr->DelUser((char*)user);
1894
1895         /* if there are no users left on the channel */
1896         if (!usercount(Ptr))
1897         {
1898                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1899
1900                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1901
1902                 /* kill the record */
1903                 if (iter != chanlist.end())
1904                 {
1905                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1906                         delete Ptr;
1907                         chanlist.erase(iter);
1908                 }
1909         }
1910 }
1911
1912
1913 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1914 {
1915         if ((!src) || (!user) || (!Ptr) || (!reason))
1916         {
1917                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1918                 return;
1919         }
1920
1921         if ((!Ptr) || (!user) || (!src))
1922         {
1923                 return;
1924         }
1925
1926         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1927
1928         if (!has_channel(user,Ptr))
1929         {
1930                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1931                 return;
1932         }
1933
1934         int MOD_RESULT = 0;
1935         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1936         if (MOD_RESULT == ACR_DENY)
1937                 return;
1938
1939         if (MOD_RESULT == ACR_DEFAULT)
1940         {
1941                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1942                 {
1943                         if (cstatus(src,Ptr) == STATUS_HOP)
1944                         {
1945                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1946                         }
1947                         else
1948                         {
1949                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1950                         }
1951
1952                         return;
1953                 }
1954         }
1955
1956         MOD_RESULT = 0;
1957         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1958         if (MOD_RESULT)
1959                 return;
1960
1961         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1962
1963         for (int i =0; i != MAXCHANS; i++)
1964         {
1965                 /* zap it from the channel list of the user */
1966                 if (user->chans[i].channel)
1967                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1968                 {
1969                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1970                         user->chans[i].uc_modes = 0;
1971                         user->chans[i].channel = NULL;
1972                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1973                         break;
1974                 }
1975         }
1976
1977         Ptr->DecUserCounter();
1978         Ptr->DelUser((char*)user);
1979
1980         /* if there are no users left on the channel */
1981         if (!usercount(Ptr))
1982         {
1983                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1984
1985                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1986
1987                 /* kill the record */
1988                 if (iter != chanlist.end())
1989                 {
1990                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1991                         delete Ptr;
1992                         chanlist.erase(iter);
1993                 }
1994         }
1995 }
1996
1997
1998
1999
2000 /* This function pokes and hacks at a parameter list like the following:
2001  *
2002  * PART #winbot,#darkgalaxy :m00!
2003  *
2004  * to turn it into a series of individual calls like this:
2005  *
2006  * PART #winbot :m00!
2007  * PART #darkgalaxy :m00!
2008  *
2009  * The seperate calls are sent to a callback function provided by the caller
2010  * (the caller will usually call itself recursively). The callback function
2011  * must be a command handler. Calling this function on a line with no list causes
2012  * no action to be taken. You must provide a starting and ending parameter number
2013  * where the range of the list can be found, useful if you have a terminating
2014  * parameter as above which is actually not part of the list, or parameters
2015  * before the actual list as well. This code is used by many functions which
2016  * can function as "one to list" (see the RFC) */
2017
2018 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
2019 {
2020         char plist[MAXBUF];
2021         char *param;
2022         char *pars[32];
2023         char blog[32][MAXBUF];
2024         char blog2[32][MAXBUF];
2025         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
2026         char keystr[MAXBUF];
2027         char moo[MAXBUF];
2028
2029         for (int i = 0; i <32; i++)
2030                 strcpy(blog[i],"");
2031
2032         for (int i = 0; i <32; i++)
2033                 strcpy(blog2[i],"");
2034
2035         strcpy(moo,"");
2036         for (int i = 0; i <10; i++)
2037         {
2038                 if (!parameters[i])
2039                 {
2040                         parameters[i] = moo;
2041                 }
2042         }
2043         if (joins)
2044         {
2045                 if (pcnt > 1) /* we have a key to copy */
2046                 {
2047                         strlcpy(keystr,parameters[1],MAXBUF);
2048                 }
2049         }
2050
2051         if (!parameters[start])
2052         {
2053                 return 0;
2054         }
2055         if (!strchr(parameters[start],','))
2056         {
2057                 return 0;
2058         }
2059         strcpy(plist,"");
2060         for (int i = start; i <= end; i++)
2061         {
2062                 if (parameters[i])
2063                 {
2064                         strlcat(plist,parameters[i],MAXBUF);
2065                 }
2066         }
2067
2068         j = 0;
2069         param = plist;
2070
2071         t = strlen(plist);
2072         for (int i = 0; i < t; i++)
2073         {
2074                 if (plist[i] == ',')
2075                 {
2076                         plist[i] = '\0';
2077                         strlcpy(blog[j++],param,MAXBUF);
2078                         param = plist+i+1;
2079                         if (j>20)
2080                         {
2081                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
2082                                 return 1;
2083                         }
2084                 }
2085         }
2086         strlcpy(blog[j++],param,MAXBUF);
2087         total = j;
2088
2089         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2090         {
2091                 strcat(keystr,",");
2092         }
2093
2094         if ((joins) && (keystr))
2095         {
2096                 if (strchr(keystr,','))
2097                 {
2098                         j = 0;
2099                         param = keystr;
2100                         t2 = strlen(keystr);
2101                         for (int i = 0; i < t2; i++)
2102                         {
2103                                 if (keystr[i] == ',')
2104                                 {
2105                                         keystr[i] = '\0';
2106                                         strlcpy(blog2[j++],param,MAXBUF);
2107                                         param = keystr+i+1;
2108                                 }
2109                         }
2110                         strlcpy(blog2[j++],param,MAXBUF);
2111                         total2 = j;
2112                 }
2113         }
2114
2115         for (j = 0; j < total; j++)
2116         {
2117                 if (blog[j])
2118                 {
2119                         pars[0] = blog[j];
2120                 }
2121                 for (q = end; q < pcnt-1; q++)
2122                 {
2123                         if (parameters[q+1])
2124                         {
2125                                 pars[q-end+1] = parameters[q+1];
2126                         }
2127                 }
2128                 if ((joins) && (parameters[1]))
2129                 {
2130                         if (pcnt > 1)
2131                         {
2132                                 pars[1] = blog2[j];
2133                         }
2134                         else
2135                         {
2136                                 pars[1] = NULL;
2137                         }
2138                 }
2139                 /* repeatedly call the function with the hacked parameter list */
2140                 if ((joins) && (pcnt > 1))
2141                 {
2142                         if (pars[1])
2143                         {
2144                                 // pars[1] already set up and containing key from blog2[j]
2145                                 fn(pars,2,u);
2146                         }
2147                         else
2148                         {
2149                                 pars[1] = parameters[1];
2150                                 fn(pars,2,u);
2151                         }
2152                 }
2153                 else
2154                 {
2155                         fn(pars,pcnt-(end-start),u);
2156                 }
2157         }
2158
2159         return 1;
2160 }
2161
2162
2163
2164 void kill_link(userrec *user,const char* r)
2165 {
2166         user_hash::iterator iter = clientlist.find(user->nick);
2167
2168         char reason[MAXBUF];
2169
2170         strncpy(reason,r,MAXBUF);
2171
2172         if (strlen(reason)>MAXQUIT)
2173         {
2174                 reason[MAXQUIT-1] = '\0';
2175         }
2176
2177         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2178         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2179         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2180
2181         if (user->registered == 7) {
2182                 FOREACH_MOD OnUserQuit(user);
2183                 WriteCommonExcept(user,"QUIT :%s",reason);
2184
2185                 // Q token must go to ALL servers!!!
2186                 char buffer[MAXBUF];
2187                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2188                 NetSendToAll(buffer);
2189         }
2190
2191         FOREACH_MOD OnUserDisconnect(user);
2192
2193         if (user->fd > -1)
2194         {
2195                 FOREACH_MOD OnRawSocketClose(user->fd);
2196                 shutdown(user->fd,2);
2197                 close(user->fd);
2198         }
2199
2200         if (user->registered == 7) {
2201                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2202                 AddWhoWas(user);
2203         }
2204
2205         if (user->registered == 7) {
2206                 purge_empty_chans(user);
2207         }
2208
2209         if (iter != clientlist.end())
2210         {
2211                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2212                 if (user->fd > -1)
2213                         fd_ref_table[user->fd] = NULL;
2214                 delete user;
2215                 clientlist.erase(iter);
2216         }
2217 }
2218
2219 void kill_link_silent(userrec *user,const char* r)
2220 {
2221         user_hash::iterator iter = clientlist.find(user->nick);
2222
2223         char reason[MAXBUF];
2224
2225         strncpy(reason,r,MAXBUF);
2226
2227         if (strlen(reason)>MAXQUIT)
2228         {
2229                 reason[MAXQUIT-1] = '\0';
2230         }
2231
2232         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2233         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2234         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2235
2236         if (user->registered == 7) {
2237                 FOREACH_MOD OnUserQuit(user);
2238                 WriteCommonExcept(user,"QUIT :%s",reason);
2239
2240                 // Q token must go to ALL servers!!!
2241                 char buffer[MAXBUF];
2242                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2243                 NetSendToAll(buffer);
2244         }
2245
2246         FOREACH_MOD OnUserDisconnect(user);
2247
2248         if (user->fd > -1)
2249         {
2250                 FOREACH_MOD OnRawSocketClose(user->fd);
2251                 shutdown(user->fd,2);
2252                 close(user->fd);
2253         }
2254
2255         if (user->registered == 7) {
2256                 purge_empty_chans(user);
2257         }
2258
2259         if (iter != clientlist.end())
2260         {
2261                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2262                 if (user->fd > -1)
2263                         fd_ref_table[user->fd] = NULL;
2264                 delete user;
2265                 clientlist.erase(iter);
2266         }
2267 }
2268
2269
2270
2271 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2272
2273 char* Passwd(userrec *user)
2274 {
2275         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2276         {
2277                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2278                 {
2279                         return i->pass;
2280                 }
2281         }
2282         return "";
2283 }
2284
2285 bool IsDenied(userrec *user)
2286 {
2287         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2288         {
2289                 if (match(user->host,i->host) && (i->type == CC_DENY))
2290                 {
2291                         return true;
2292                 }
2293         }
2294         return false;
2295 }
2296
2297
2298
2299
2300 /* sends out an error notice to all connected clients (not to be used
2301  * lightly!) */
2302
2303 void send_error(char *s)
2304 {
2305         log(DEBUG,"send_error: %s",s);
2306         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2307         {
2308                 if (isnick(i->second->nick))
2309                 {
2310                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2311                 }
2312                 else
2313                 {
2314                         // fix - unregistered connections receive ERROR, not NOTICE
2315                         Write(i->second->fd,"ERROR :%s",s);
2316                 }
2317         }
2318 }
2319
2320 void Error(int status)
2321 {
2322         signal (SIGALRM, SIG_IGN);
2323         signal (SIGPIPE, SIG_IGN);
2324         signal (SIGTERM, SIG_IGN);
2325         signal (SIGABRT, SIG_IGN);
2326         signal (SIGSEGV, SIG_IGN);
2327         signal (SIGURG, SIG_IGN);
2328         signal (SIGKILL, SIG_IGN);
2329         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2330         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2331         Exit(status);
2332 }
2333
2334
2335 int main(int argc, char** argv)
2336 {
2337         Start();
2338         srand(time(NULL));
2339         log(DEBUG,"*** InspIRCd starting up!");
2340         if (!FileExists(CONFIG_FILE))
2341         {
2342                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2343                 log(DEFAULT,"main: no config");
2344                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2345                 Exit(ERROR);
2346         }
2347         if (argc > 1) {
2348                 for (int i = 1; i < argc; i++)
2349                 {
2350                         if (!strcmp(argv[i],"-nofork")) {
2351                                 nofork = true;
2352                         }
2353                         if (!strcmp(argv[i],"-wait")) {
2354                                 sleep(6);
2355                         }
2356                         if (!strcmp(argv[i],"-nolimit")) {
2357                                 unlimitcore = true;
2358                         }
2359                 }
2360         }
2361         strlcpy(MyExecutable,argv[0],MAXBUF);
2362
2363         // initialize the lowercase mapping table
2364         for (int cn = 0; cn < 256; cn++)
2365                 lowermap[cn] = cn;
2366         // lowercase the uppercase chars
2367         for (int cn = 65; cn < 91; cn++)
2368                 lowermap[cn] = tolower(cn);
2369         // now replace the specific chars for scandanavian comparison
2370         lowermap['['] = '{';
2371         lowermap[']'] = '}';
2372         lowermap['\\'] = '|';
2373
2374         if (InspIRCd(argv,argc) == ERROR)
2375         {
2376                 log(DEFAULT,"main: daemon function bailed");
2377                 printf("ERROR: could not initialise. Shutting down.\n");
2378                 Exit(ERROR);
2379         }
2380         Exit(TRUE);
2381         return 0;
2382 }
2383
2384 template<typename T> inline string ConvToStr(const T &in)
2385 {
2386         stringstream tmp;
2387         if (!(tmp << in)) return string();
2388         return tmp.str();
2389 }
2390
2391 /* re-allocates a nick in the user_hash after they change nicknames,
2392  * returns a pointer to the new user as it may have moved */
2393
2394 userrec* ReHashNick(char* Old, char* New)
2395 {
2396         //user_hash::iterator newnick;
2397         user_hash::iterator oldnick = clientlist.find(Old);
2398
2399         log(DEBUG,"ReHashNick: %s %s",Old,New);
2400
2401         if (!strcasecmp(Old,New))
2402         {
2403                 log(DEBUG,"old nick is new nick, skipping");
2404                 return oldnick->second;
2405         }
2406
2407         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2408
2409         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2410
2411         clientlist[New] = new userrec();
2412         clientlist[New] = oldnick->second;
2413         clientlist.erase(oldnick);
2414
2415         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2416
2417         return clientlist[New];
2418 }
2419
2420 /* adds or updates an entry in the whowas list */
2421 void AddWhoWas(userrec* u)
2422 {
2423         user_hash::iterator iter = whowas.find(u->nick);
2424         userrec *a = new userrec();
2425         strlcpy(a->nick,u->nick,NICKMAX);
2426         strlcpy(a->ident,u->ident,64);
2427         strlcpy(a->dhost,u->dhost,256);
2428         strlcpy(a->host,u->host,256);
2429         strlcpy(a->fullname,u->fullname,128);
2430         strlcpy(a->server,u->server,256);
2431         a->signon = u->signon;
2432
2433         /* MAX_WHOWAS:   max number of /WHOWAS items
2434          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2435          *               can be replaced by a newer one
2436          */
2437
2438         if (iter == whowas.end())
2439         {
2440                 if (whowas.size() == WHOWAS_MAX)
2441                 {
2442                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2443                         {
2444                                 // 3600 seconds in an hour ;)
2445                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2446                                 {
2447                                         if (i->second) delete i->second;
2448                                         i->second = a;
2449                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2450                                         return;
2451                                 }
2452                         }
2453                 }
2454                 else
2455                 {
2456                         log(DEBUG,"added fresh WHOWAS entry");
2457                         whowas[a->nick] = a;
2458                 }
2459         }
2460         else
2461         {
2462                 log(DEBUG,"updated WHOWAS entry");
2463                 if (iter->second) delete iter->second;
2464                 iter->second = a;
2465         }
2466 }
2467
2468
2469 /* add a client connection to the sockets list */
2470 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2471 {
2472         string tempnick;
2473         char tn2[MAXBUF];
2474         user_hash::iterator iter;
2475
2476         tempnick = ConvToStr(socket) + "-unknown";
2477         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2478
2479         iter = clientlist.find(tempnick);
2480
2481         // fix by brain.
2482         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
2483         // using one as a registered connection. As theyre per fd, we can also safely assume
2484         // that we wont have collisions. Therefore, if the nick exists in the list, its only
2485         // used by a dead socket, erase the iterator so that the new client may reclaim it.
2486         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
2487         // issue in earlier alphas/betas
2488         if (iter != clientlist.end())
2489         {
2490                 clientlist.erase(iter);
2491         }
2492
2493         /*
2494          * It is OK to access the value here this way since we know
2495          * it exists, we just created it above.
2496          *
2497          * At NO other time should you access a value in a map or a
2498          * hash_map this way.
2499          */
2500         clientlist[tempnick] = new userrec();
2501
2502         NonBlocking(socket);
2503         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2504
2505         clientlist[tempnick]->fd = socket;
2506         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2507         strncpy(clientlist[tempnick]->host, host,160);
2508         strncpy(clientlist[tempnick]->dhost, host,160);
2509         strncpy(clientlist[tempnick]->server, ServerName,256);
2510         strncpy(clientlist[tempnick]->ident, "unknown",12);
2511         clientlist[tempnick]->registered = 0;
2512         clientlist[tempnick]->signon = TIME+dns_timeout;
2513         clientlist[tempnick]->lastping = 1;
2514         clientlist[tempnick]->port = port;
2515         strncpy(clientlist[tempnick]->ip,ip,32);
2516
2517         // set the registration timeout for this user
2518         unsigned long class_regtimeout = 90;
2519         int class_flood = 0;
2520         long class_threshold = 5;
2521
2522         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2523         {
2524                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2525                 {
2526                         class_regtimeout = (unsigned long)i->registration_timeout;
2527                         class_flood = i->flood;
2528                         clientlist[tempnick]->pingmax = i->pingtime;
2529                         class_threshold = i->threshold;
2530                         break;
2531                 }
2532         }
2533
2534         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2535         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2536         clientlist[tempnick]->flood = class_flood;
2537         clientlist[tempnick]->threshold = class_threshold;
2538
2539         for (int i = 0; i < MAXCHANS; i++)
2540         {
2541                 clientlist[tempnick]->chans[i].channel = NULL;
2542                 clientlist[tempnick]->chans[i].uc_modes = 0;
2543         }
2544
2545         if (clientlist.size() == MAXCLIENTS)
2546         {
2547                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2548                 return;
2549         }
2550
2551         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
2552         // its a pretty big but for the moment valid assumption:
2553         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
2554         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
2555         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
2556         // which for the time being is a physical impossibility (even the largest networks dont have more
2557         // than about 10,000 users on ONE server!)
2558         if (socket > 65535)
2559         {
2560                 kill_link(clientlist[tempnick],"Server is full");
2561                 return;
2562         }
2563
2564
2565         char* e = matches_exception(ip);
2566         if (!e)
2567         {
2568                 char* r = matches_zline(ip);
2569                 if (r)
2570                 {
2571                         char reason[MAXBUF];
2572                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2573                         kill_link(clientlist[tempnick],reason);
2574                         return;
2575                 }
2576         }
2577         fd_ref_table[socket] = clientlist[tempnick];
2578 }
2579
2580 // this function counts all users connected, wether they are registered or NOT.
2581 int usercnt(void)
2582 {
2583         return clientlist.size();
2584 }
2585
2586 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2587 int registered_usercount(void)
2588 {
2589         int c = 0;
2590         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2591         {
2592                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2593         }
2594         return c;
2595 }
2596
2597 int usercount_invisible(void)
2598 {
2599         int c = 0;
2600
2601         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2602         {
2603                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2604         }
2605         return c;
2606 }
2607
2608 int usercount_opers(void)
2609 {
2610         int c = 0;
2611
2612         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2613         {
2614                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2615         }
2616         return c;
2617 }
2618
2619 int usercount_unknown(void)
2620 {
2621         int c = 0;
2622
2623         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2624         {
2625                 if ((i->second->fd) && (i->second->registered != 7))
2626                         c++;
2627         }
2628         return c;
2629 }
2630
2631 long chancount(void)
2632 {
2633         return chanlist.size();
2634 }
2635
2636 long count_servs(void)
2637 {
2638         int c = 0;
2639         for (int i = 0; i < 32; i++)
2640         {
2641                 if (me[i] != NULL)
2642                 {
2643                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2644                         {
2645                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2646                                 {
2647                                         c++;
2648                                 }
2649                         }
2650                 }
2651         }
2652         return c;
2653 }
2654
2655 long servercount(void)
2656 {
2657         return count_servs()+1;
2658 }
2659
2660 long local_count()
2661 {
2662         int c = 0;
2663         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2664         {
2665                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2666         }
2667         return c;
2668 }
2669
2670
2671 void ShowMOTD(userrec *user)
2672 {
2673         std::string WholeMOTD = "";
2674         if (!MOTD.size())
2675         {
2676                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
2677                 return;
2678         }
2679         WholeMOTD = std::string(":") + std::string(ServerName) + std::string(" 375 ") + std::string(user->nick) + std::string(" :- ") + std::string(ServerName) + " message of the day\r\n";
2680         for (int i = 0; i != MOTD.size(); i++)
2681         {
2682                 WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 372 ") + std::string(user->nick) + std::string(" :- ") + MOTD[i] + std::string("\r\n");
2683         }
2684         WholeMOTD = WholeMOTD + std::string(":") + std::string(ServerName) + std::string(" 376 ") + std::string(user->nick) + std::string(" :End of message of the day.\r\n");
2685         // only one write operation
2686         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2687         statsSent += WholeMOTD.length();
2688 }
2689
2690 void ShowRULES(userrec *user)
2691 {
2692         if (!RULES.size())
2693         {
2694                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2695                 return;
2696         }
2697         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2698         for (int i = 0; i != RULES.size(); i++)
2699         {
2700                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2701         }
2702         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2703 }
2704
2705 /* shows the message of the day, and any other on-logon stuff */
2706 void FullConnectUser(userrec* user)
2707 {
2708         statsConnects++;
2709         user->idle_lastmsg = TIME;
2710         log(DEBUG,"ConnectUser: %s",user->nick);
2711
2712         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2713         {
2714                 kill_link(user,"Invalid password");
2715                 return;
2716         }
2717         if (IsDenied(user))
2718         {
2719                 kill_link(user,"Unauthorised connection");
2720                 return;
2721         }
2722
2723         char match_against[MAXBUF];
2724         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2725         char* e = matches_exception(match_against);
2726         if (!e)
2727         {
2728                 char* r = matches_gline(match_against);
2729                 if (r)
2730                 {
2731                         char reason[MAXBUF];
2732                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2733                         kill_link_silent(user,reason);
2734                         return;
2735                 }
2736                 r = matches_kline(user->host);
2737                 if (r)
2738                 {
2739                         char reason[MAXBUF];
2740                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2741                         kill_link_silent(user,reason);
2742                         return;
2743                 }
2744         }
2745
2746         // fix by brain: move this below the xline checks to prevent spurious quits going onto the net that dont belong
2747         user->registered = 7;
2748
2749         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2750         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2751         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2752         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2753         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2754         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2755         std::stringstream v;
2756         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2757         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2758         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2759         v << std::string(Network);
2760         std::string data005 = v.str();
2761         FOREACH_MOD On005Numeric(data005);
2762         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2763         // so i'd better split it :)
2764         std::stringstream out(data005);
2765         std::string token = "";
2766         std::string line5 = "";
2767         int token_counter = 0;
2768         while (!out.eof())
2769         {
2770                 out >> token;
2771                 line5 = line5 + token + " ";
2772                 token_counter++;
2773                 if ((token_counter >= 13) || (out.eof() == true))
2774                 {
2775                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2776                         line5 = "";
2777                         token_counter = 0;
2778                 }
2779         }
2780         ShowMOTD(user);
2781
2782         char buffer[MAXBUF];
2783         snprintf(buffer,MAXBUF,"N %lu %s %s %s %s +%s %s %s :%s",(unsigned long)user->age,user->nick,user->host,user->dhost,user->ident,user->modes,user->ip,ServerName,user->fullname);
2784         NetSendToAll(buffer);
2785
2786         // fix by brain: these should be AFTER the N token, so other servers know what the HELL we're on about... :)
2787         FOREACH_MOD OnUserConnect(user);
2788         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2789 }
2790
2791
2792 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2793 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2794 // registration timeout maximum seconds)
2795 bool AllModulesReportReady(userrec* user)
2796 {
2797         for (int i = 0; i <= MODCOUNT; i++)
2798         {
2799                 int res = modules[i]->OnCheckReady(user);
2800                         if (!res)
2801                                 return false;
2802         }
2803         return true;
2804 }
2805
2806 /* shows the message of the day, and any other on-logon stuff */
2807 void ConnectUser(userrec *user)
2808 {
2809         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2810         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2811         {
2812                 FullConnectUser(user);
2813         }
2814 }
2815
2816 std::string GetVersionString()
2817 {
2818         char Revision[] = "$Revision$";
2819         char versiondata[MAXBUF];
2820         char *s1 = Revision;
2821         char *savept;
2822         char *v2 = strtok_r(s1," ",&savept);
2823         s1 = savept;
2824         v2 = strtok_r(s1," ",&savept);
2825         s1 = savept;
2826         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s (O=%lu)",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2827         return versiondata;
2828 }
2829
2830 void handle_version(char **parameters, int pcnt, userrec *user)
2831 {
2832         if (!pcnt)
2833         {
2834                 WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2835         }
2836         else
2837         {
2838                 if (!strcmp(parameters[0],"*"))
2839                 {
2840                         for (int j = 0; j < 32; j++)
2841                         {
2842                                 if (me[j] != NULL)
2843                                 {
2844                                         for (int x = 0; x < me[j]->connectors.size(); x++)
2845                                         {
2846                                                 WriteServ(user->fd,"351 %s :Server %d:%d (%s): %s",user->nick,j,x,me[j]->connectors[x].GetServerName().c_str(),me[j]->connectors[x].GetVersionString().c_str());
2847                                         }
2848                                 }
2849                         }
2850                         return;
2851                 }
2852                 if (match(ServerName,parameters[0]))
2853                 {
2854                         WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2855                         return;
2856                 }
2857                 bool displayed = false, found = false;
2858                 for (int j = 0; j < 32; j++)
2859                 {
2860                         if (me[j] != NULL)
2861                         {
2862                                 for (int x = 0; x < me[j]->connectors.size(); x++)
2863                                 {
2864                                         if (match(me[j]->connectors[x].GetServerName().c_str(),parameters[0]))
2865                                         {
2866                                                 found = true;
2867                                                 if ((me[j]->connectors[x].GetVersionString() != "") && (!displayed))
2868                                                 {
2869                                                         displayed = true;
2870                                                         WriteServ(user->fd,"351 %s :%s",user->nick,me[j]->connectors[x].GetVersionString().c_str());
2871                                                 }
2872                                         }
2873                                 }
2874                         }
2875                 }
2876                 if ((!displayed) && (found))
2877                 {
2878                         WriteServ(user->fd,"402 %s %s :Server %s has no version information",user->nick,parameters[0],parameters[0]);
2879                         return;
2880                 }
2881                 if (!found)
2882                 {
2883                         WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2884                 }
2885         }
2886         return;
2887 }
2888
2889
2890 // calls a handler function for a command
2891
2892 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2893 {
2894                 for (int i = 0; i < cmdlist.size(); i++)
2895                 {
2896                         if (!strcasecmp(cmdlist[i].command,commandname))
2897                         {
2898                                 if (cmdlist[i].handler_function)
2899                                 {
2900                                         if (pcnt>=cmdlist[i].min_params)
2901                                         {
2902                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2903                                                 {
2904                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2905                                                 }
2906                                         }
2907                                 }
2908                         }
2909                 }
2910 }
2911
2912 void DoSplitEveryone()
2913 {
2914         bool go_again = true;
2915         while (go_again)
2916         {
2917                 go_again = false;
2918                 for (int i = 0; i < 32; i++)
2919                 {
2920                         if (me[i] != NULL)
2921                         {
2922                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2923                                 {
2924                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2925                                         {
2926                                                 j->routes.clear();
2927                                                 j->CloseConnection();
2928                                                 me[i]->connectors.erase(j);
2929                                                 go_again = true;
2930                                                 break;
2931                                         }
2932                                 }
2933                         }
2934                 }
2935         }
2936         log(DEBUG,"Removed server. Will remove clients...");
2937         // iterate through the userlist and remove all users on this server.
2938         // because we're dealing with a mesh, we dont have to deal with anything
2939         // "down-route" from this server (nice huh)
2940         go_again = true;
2941         char reason[MAXBUF];
2942         while (go_again)
2943         {
2944                 go_again = false;
2945                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2946                 {
2947                         if (strcasecmp(u->second->server,ServerName))
2948                         {
2949                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2950                                 kill_link(u->second,reason);
2951                                 go_again = true;
2952                                 break;
2953                         }
2954                 }
2955         }
2956 }
2957
2958
2959
2960 char islast(const char* s)
2961 {
2962         char c = '`';
2963         for (int j = 0; j < 32; j++)
2964         {
2965                 if (me[j] != NULL)
2966                 {
2967                         for (int k = 0; k < me[j]->connectors.size(); k++)
2968                         {
2969                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2970                                 {
2971                                         c = '|';
2972                                 }
2973                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2974                                 {
2975                                         c = '`';
2976                                 }
2977                         }
2978                 }
2979         }
2980         return c;
2981 }
2982
2983 long map_count(const char* s)
2984 {
2985         int c = 0;
2986         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2987         {
2988                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2989         }
2990         return c;
2991 }
2992
2993
2994 void force_nickchange(userrec* user,const char* newnick)
2995 {
2996         char nick[MAXBUF];
2997         int MOD_RESULT = 0;
2998
2999         strcpy(nick,"");
3000
3001         FOREACH_RESULT(OnUserPreNick(user,newnick));
3002         if (MOD_RESULT) {
3003                 statsCollisions++;
3004                 kill_link(user,"Nickname collision");
3005                 return;
3006         }
3007         if (matches_qline(newnick))
3008         {
3009                 statsCollisions++;
3010                 kill_link(user,"Nickname collision");
3011                 return;
3012         }
3013
3014         if (user)
3015         {
3016                 if (newnick)
3017                 {
3018                         strncpy(nick,newnick,MAXBUF);
3019                 }
3020                 if (user->registered == 7)
3021                 {
3022                         char* pars[1];
3023                         pars[0] = nick;
3024                         handle_nick(pars,1,user);
3025                 }
3026         }
3027 }
3028
3029
3030 int process_parameters(char **command_p,char *parameters)
3031 {
3032         int j = 0;
3033         int q = strlen(parameters);
3034         if (!q)
3035         {
3036                 /* no parameters, command_p invalid! */
3037                 return 0;
3038         }
3039         if (parameters[0] == ':')
3040         {
3041                 command_p[0] = parameters+1;
3042                 return 1;
3043         }
3044         if (q)
3045         {
3046                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
3047                 {
3048                         /* only one parameter */
3049                         command_p[0] = parameters;
3050                         if (parameters[0] == ':')
3051                         {
3052                                 if (strchr(parameters,' ') != NULL)
3053                                 {
3054                                         command_p[0]++;
3055                                 }
3056                         }
3057                         return 1;
3058                 }
3059         }
3060         command_p[j++] = parameters;
3061         for (int i = 0; i <= q; i++)
3062         {
3063                 if (parameters[i] == ' ')
3064                 {
3065                         command_p[j++] = parameters+i+1;
3066                         parameters[i] = '\0';
3067                         if (command_p[j-1][0] == ':')
3068                         {
3069                                 *command_p[j-1]++; /* remove dodgy ":" */
3070                                 break;
3071                                 /* parameter like this marks end of the sequence */
3072                         }
3073                 }
3074         }
3075         return j; /* returns total number of items in the list */
3076 }
3077
3078 void process_command(userrec *user, char* cmd)
3079 {
3080         char *parameters;
3081         char *command;
3082         char *command_p[127];
3083         char p[MAXBUF], temp[MAXBUF];
3084         int j, items, cmd_found;
3085
3086         for (int i = 0; i < 127; i++)
3087                 command_p[i] = NULL;
3088
3089         if (!user)
3090         {
3091                 return;
3092         }
3093         if (!cmd)
3094         {
3095                 return;
3096         }
3097         if (!cmd[0])
3098         {
3099                 return;
3100         }
3101
3102         int total_params = 0;
3103         if (strlen(cmd)>2)
3104         {
3105                 for (int q = 0; q < strlen(cmd)-1; q++)
3106                 {
3107                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
3108                         {
3109                                 total_params++;
3110                                 // found a 'trailing', we dont count them after this.
3111                                 break;
3112                         }
3113                         if (cmd[q] == ' ')
3114                                 total_params++;
3115                 }
3116         }
3117
3118         // another phidjit bug...
3119         if (total_params > 126)
3120         {
3121                 *(strchr(cmd,' ')) = '\0';
3122                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
3123                 return;
3124         }
3125
3126         strlcpy(temp,cmd,MAXBUF);
3127
3128         std::string tmp = cmd;
3129         for (int i = 0; i <= MODCOUNT; i++)
3130         {
3131                 std::string oldtmp = tmp;
3132                 modules[i]->OnServerRaw(tmp,true,user);
3133                 if (oldtmp != tmp)
3134                 {
3135                         log(DEBUG,"A Module changed the input string!");
3136                         log(DEBUG,"New string: %s",tmp.c_str());
3137                         log(DEBUG,"Old string: %s",oldtmp.c_str());
3138                         break;
3139                 }
3140         }
3141         strlcpy(cmd,tmp.c_str(),MAXBUF);
3142         strlcpy(temp,cmd,MAXBUF);
3143
3144         if (!strchr(cmd,' '))
3145         {
3146                 /* no parameters, lets skip the formalities and not chop up
3147                  * the string */
3148                 log(DEBUG,"About to preprocess command with no params");
3149                 items = 0;
3150                 command_p[0] = NULL;
3151                 parameters = NULL;
3152                 for (int i = 0; i <= strlen(cmd); i++)
3153                 {
3154                         cmd[i] = toupper(cmd[i]);
3155                 }
3156                 command = cmd;
3157         }
3158         else
3159         {
3160                 strcpy(cmd,"");
3161                 j = 0;
3162                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
3163                 for (int i = 0; i < strlen(temp); i++)
3164                 {
3165                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
3166                         {
3167                                 cmd[j++] = temp[i];
3168                                 cmd[j] = 0;
3169                         }
3170                 }
3171                 /* split the full string into a command plus parameters */
3172                 parameters = p;
3173                 strcpy(p," ");
3174                 command = cmd;
3175                 if (strchr(cmd,' '))
3176                 {
3177                         for (int i = 0; i <= strlen(cmd); i++)
3178                         {
3179                                 /* capitalise the command ONLY, leave params intact */
3180                                 cmd[i] = toupper(cmd[i]);
3181                                 /* are we nearly there yet?! :P */
3182                                 if (cmd[i] == ' ')
3183                                 {
3184                                         command = cmd;
3185                                         parameters = cmd+i+1;
3186                                         cmd[i] = '\0';
3187                                         break;
3188                                 }
3189                         }
3190                 }
3191                 else
3192                 {
3193                         for (int i = 0; i <= strlen(cmd); i++)
3194                         {
3195                                 cmd[i] = toupper(cmd[i]);
3196                         }
3197                 }
3198
3199         }
3200         cmd_found = 0;
3201
3202         if (strlen(command)>MAXCOMMAND)
3203         {
3204                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
3205                 return;
3206         }
3207
3208         for (int x = 0; x < strlen(command); x++)
3209         {
3210                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
3211                 {
3212                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
3213                         {
3214                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
3215                                 {
3216                                         statsUnknown++;
3217                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3218                                         return;
3219                                 }
3220                         }
3221                 }
3222         }
3223
3224         for (int i = 0; i != cmdlist.size(); i++)
3225         {
3226                 if (cmdlist[i].command[0])
3227                 {
3228                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3229                         {
3230                                 if (parameters)
3231                                 {
3232                                         if (parameters[0])
3233                                         {
3234                                                 items = process_parameters(command_p,parameters);
3235                                         }
3236                                         else
3237                                         {
3238                                                 items = 0;
3239                                                 command_p[0] = NULL;
3240                                         }
3241                                 }
3242                                 else
3243                                 {
3244                                         items = 0;
3245                                         command_p[0] = NULL;
3246                                 }
3247
3248                                 if (user)
3249                                 {
3250                                         /* activity resets the ping pending timer */
3251                                         user->nping = TIME + user->pingmax;
3252                                         if ((items) < cmdlist[i].min_params)
3253                                         {
3254                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3255                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3256                                                 return;
3257                                         }
3258                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3259                                         {
3260                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3261                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3262                                                 cmd_found = 1;
3263                                                 return;
3264                                         }
3265                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3266                                         {
3267                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3268                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3269                                                 cmd_found = 1;
3270                                                 return;
3271                                         }
3272                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3273                                          * deny command! */
3274                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3275                                         {
3276                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3277                                                 {
3278                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3279                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3280                                                         return;
3281                                                 }
3282                                         }
3283                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3284                                         {
3285                                                 char* mycmd;
3286                                                 char* savept2;
3287                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3288                                                 while (mycmd)
3289                                                 {
3290                                                         if (!strcasecmp(mycmd,command))
3291                                                         {
3292                                                                 // command is disabled!
3293                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3294                                                                 return;
3295                                                         }
3296                                                         mycmd = strtok_r(NULL," ",&savept2);
3297                                                 }
3298
3299
3300                                         }
3301                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3302                                         {
3303                                                 if (cmdlist[i].handler_function)
3304                                                 {
3305
3306                                                         /* ikky /stats counters */
3307                                                         if (temp)
3308                                                         {
3309                                                                 cmdlist[i].use_count++;
3310                                                                 cmdlist[i].total_bytes+=strlen(temp);
3311                                                         }
3312
3313                                                         int MOD_RESULT = 0;
3314                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3315                                                         if (MOD_RESULT == 1) {
3316                                                                 return;
3317                                                         }
3318
3319                                                         /* WARNING: nothing may come after the
3320                                                          * command handler call, as the handler
3321                                                          * may free the user structure! */
3322
3323                                                         cmdlist[i].handler_function(command_p,items,user);
3324                                                 }
3325                                                 return;
3326                                         }
3327                                         else
3328                                         {
3329                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3330                                                 return;
3331                                         }
3332                                 }
3333                                 cmd_found = 1;
3334                         }
3335                 }
3336         }
3337         if ((!cmd_found) && (user))
3338         {
3339                 statsUnknown++;
3340                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3341         }
3342 }
3343
3344
3345 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3346 {
3347         command_t comm;
3348         /* create the command and push it onto the table */
3349         strlcpy(comm.command,cmd,MAXBUF);
3350         strlcpy(comm.source,source,MAXBUF);
3351         comm.handler_function = f;
3352         comm.flags_needed = flags;
3353         comm.min_params = minparams;
3354         comm.use_count = 0;
3355         comm.total_bytes = 0;
3356         cmdlist.push_back(comm);
3357         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3358 }
3359
3360 bool removecommands(const char* source)
3361 {
3362         bool go_again = true;
3363         while (go_again)
3364         {
3365                 go_again = false;
3366                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3367                 {
3368                         if (!strcmp(i->source,source))
3369                         {
3370                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3371                                 cmdlist.erase(i);
3372                                 go_again = true;
3373                                 break;
3374                         }
3375                 }
3376         }
3377         return true;
3378 }
3379
3380 void SetupCommandTable(void)
3381 {
3382         createcommand("USER",handle_user,0,4,"<core>");
3383         createcommand("NICK",handle_nick,0,1,"<core>");
3384         createcommand("QUIT",handle_quit,0,0,"<core>");
3385         createcommand("VERSION",handle_version,0,0,"<core>");
3386         createcommand("PING",handle_ping,0,1,"<core>");
3387         createcommand("PONG",handle_pong,0,1,"<core>");
3388         createcommand("ADMIN",handle_admin,0,0,"<core>");
3389         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3390         createcommand("INFO",handle_info,0,0,"<core>");
3391         createcommand("TIME",handle_time,0,0,"<core>");
3392         createcommand("WHOIS",handle_whois,0,1,"<core>");
3393         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3394         createcommand("NOTICE",handle_notice,0,2,"<core>");
3395         createcommand("JOIN",handle_join,0,1,"<core>");
3396         createcommand("NAMES",handle_names,0,0,"<core>");
3397         createcommand("PART",handle_part,0,1,"<core>");
3398         createcommand("KICK",handle_kick,0,2,"<core>");
3399         createcommand("MODE",handle_mode,0,1,"<core>");
3400         createcommand("TOPIC",handle_topic,0,1,"<core>");
3401         createcommand("WHO",handle_who,0,1,"<core>");
3402         createcommand("MOTD",handle_motd,0,0,"<core>");
3403         createcommand("RULES",handle_rules,0,0,"<core>");
3404         createcommand("OPER",handle_oper,0,2,"<core>");
3405         createcommand("LIST",handle_list,0,0,"<core>");
3406         createcommand("DIE",handle_die,'o',1,"<core>");
3407         createcommand("RESTART",handle_restart,'o',1,"<core>");
3408         createcommand("KILL",handle_kill,'o',2,"<core>");
3409         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3410         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3411         createcommand("STATS",handle_stats,0,1,"<core>");
3412         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3413         createcommand("AWAY",handle_away,0,0,"<core>");
3414         createcommand("ISON",handle_ison,0,0,"<core>");
3415         createcommand("SUMMON",handle_summon,0,0,"<core>");
3416         createcommand("USERS",handle_users,0,0,"<core>");
3417         createcommand("INVITE",handle_invite,0,2,"<core>");
3418         createcommand("PASS",handle_pass,0,1,"<core>");
3419         createcommand("TRACE",handle_trace,'o',0,"<core>");
3420         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3421         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3422         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3423         createcommand("MODULES",handle_modules,0,0,"<core>");
3424         createcommand("LINKS",handle_links,0,0,"<core>");
3425         createcommand("MAP",handle_map,0,0,"<core>");
3426         createcommand("KLINE",handle_kline,'o',1,"<core>");
3427         createcommand("GLINE",handle_gline,'o',1,"<core>");
3428         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3429         createcommand("QLINE",handle_qline,'o',1,"<core>");
3430         createcommand("ELINE",handle_eline,'o',1,"<core>");
3431         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3432         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3433         createcommand("SERVER",handle_server,0,0,"<core>");
3434 }
3435
3436 void process_buffer(const char* cmdbuf,userrec *user)
3437 {
3438         if (!user)
3439         {
3440                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3441                 return;
3442         }
3443         char cmd[MAXBUF];
3444         if (!cmdbuf)
3445         {
3446                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3447                 return;
3448         }
3449         if (!cmdbuf[0])
3450         {
3451                 return;
3452         }
3453         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3454
3455         strlcpy(cmd,cmdbuf,MAXBUF);
3456         if (!cmd[0])
3457         {
3458                 return;
3459         }
3460         int sl = strlen(cmd)-1;
3461         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3462         {
3463                 cmd[sl] = '\0';
3464         }
3465         sl = strlen(cmd)-1;
3466         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3467         {
3468                 cmd[sl] = '\0';
3469         }
3470         sl = strlen(cmd)-1;
3471         while (cmd[sl] == ' ') // strip trailing spaces
3472         {
3473                 cmd[sl] = '\0';
3474                 sl = strlen(cmd)-1;
3475         }
3476
3477         if (!cmd[0])
3478         {
3479                 return;
3480         }
3481         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3482         tidystring(cmd);
3483         if ((user) && (cmd))
3484         {
3485                 process_command(user,cmd);
3486         }
3487 }
3488
3489 void DoSync(serverrec* serv, char* tcp_host)
3490 {
3491         char data[MAXBUF];
3492         log(DEBUG,"Sending sync");
3493         // send start of sync marker: Y <timestamp>
3494         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3495         // except the ones its receiving it from.
3496         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3497         serv->SendPacket(data,tcp_host);
3498         // send users and channels
3499
3500         NetSendMyRoutingTable();
3501
3502         // send all routing table and uline voodoo. The ordering of these commands is IMPORTANT!
3503         for (int j = 0; j < 32; j++)
3504         {
3505                 if (me[j] != NULL)
3506                 {
3507                         for (int k = 0; k < me[j]->connectors.size(); k++)
3508                         {
3509                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3510                                 {
3511                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3512                                         serv->SendPacket(data,tcp_host);
3513                                 }
3514                         }
3515                 }
3516         }
3517
3518         // send our version for the remote side to cache
3519         snprintf(data,MAXBUF,"v %s %s",ServerName,GetVersionString().c_str());
3520         serv->SendPacket(data,tcp_host);
3521
3522         // sync the users and channels, give the modules a look-in.
3523         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3524         {
3525                 snprintf(data,MAXBUF,"N %lu %s %s %s %s +%s %s %s :%s",(unsigned long)u->second->age,u->second->nick,u->second->host,u->second->dhost,u->second->ident,u->second->modes,u->second->ip,u->second->server,u->second->fullname);
3526                 serv->SendPacket(data,tcp_host);
3527                 if (strchr(u->second->modes,'o'))
3528                 {
3529                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3530                         serv->SendPacket(data,tcp_host);
3531                 }
3532                 for (int i = 0; i <= MODCOUNT; i++)
3533                 {
3534                         string_list l = modules[i]->OnUserSync(u->second);
3535                         for (int j = 0; j < l.size(); j++)
3536                         {
3537                                 strlcpy(data,l[j].c_str(),MAXBUF);
3538                                 serv->SendPacket(data,tcp_host);
3539                         }
3540                 }
3541                 char* chl = chlist(u->second,u->second);
3542                 if (strcmp(chl,""))
3543                 {
3544                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3545                         serv->SendPacket(data,tcp_host);
3546                 }
3547         }
3548         // send channel modes, topics etc...
3549         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3550         {
3551                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3552                 serv->SendPacket(data,tcp_host);
3553                 for (int i = 0; i <= MODCOUNT; i++)
3554                 {
3555                         string_list l = modules[i]->OnChannelSync(c->second);
3556                         for (int j = 0; j < l.size(); j++)
3557                         {
3558                                 strlcpy(data,l[j].c_str(),MAXBUF);
3559                                 serv->SendPacket(data,tcp_host);
3560                         }
3561                 }
3562                 if (c->second->topic[0])
3563                 {
3564                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3565                         serv->SendPacket(data,tcp_host);
3566                 }
3567                 // send current banlist
3568
3569                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3570                 {
3571                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3572                         serv->SendPacket(data,tcp_host);
3573                 }
3574         }
3575         // sync global zlines, glines, etc
3576         sync_xlines(serv,tcp_host);
3577
3578         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3579         serv->SendPacket(data,tcp_host);
3580         log(DEBUG,"Sent sync");
3581         // ircd sends its serverlist after the end of sync here
3582 }
3583
3584
3585 void NetSendMyRoutingTable()
3586 {
3587         // send out a line saying what is reachable to us.
3588         // E.g. if A is linked to B C and D, send out:
3589         // $ A B C D
3590         // if its only linked to B and D send out:
3591         // $ A B D
3592         // if it has no links, dont even send out the line at all.
3593         char buffer[MAXBUF];
3594         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3595         bool sendit = false;
3596         for (int i = 0; i < 32; i++)
3597         {
3598                 if (me[i] != NULL)
3599                 {
3600                         for (int j = 0; j < me[i]->connectors.size(); j++)
3601                         {
3602                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3603                                 {
3604                                         strlcat(buffer," ",MAXBUF);
3605                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3606                                         sendit = true;
3607                                 }
3608                         }
3609                 }
3610         }
3611         if (sendit)
3612                 NetSendToAll(buffer);
3613 }
3614
3615
3616 void DoSplit(const char* params)
3617 {
3618         bool go_again = true;
3619         while (go_again)
3620         {
3621                 go_again = false;
3622                 for (int i = 0; i < 32; i++)
3623                 {
3624                         if (me[i] != NULL)
3625                         {
3626                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3627                                 {
3628                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3629                                         {
3630                                                 j->routes.clear();
3631                                                 j->CloseConnection();
3632                                                 me[i]->connectors.erase(j);
3633                                                 go_again = true;
3634                                                 break;
3635                                         }
3636                                 }
3637                         }
3638                 }
3639         }
3640         log(DEBUG,"Removed server. Will remove clients...");
3641         // iterate through the userlist and remove all users on this server.
3642         // because we're dealing with a mesh, we dont have to deal with anything
3643         // "down-route" from this server (nice huh)
3644         go_again = true;
3645         char reason[MAXBUF];
3646         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3647         while (go_again)
3648         {
3649                 go_again = false;
3650                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3651                 {
3652                         if (!strcasecmp(u->second->server,params))
3653                         {
3654                                 kill_link(u->second,reason);
3655                                 go_again = true;
3656                                 break;
3657                         }
3658                 }
3659         }
3660 }
3661
3662 // removes a server. Will NOT remove its users!
3663
3664 void RemoveServer(const char* name)
3665 {
3666         bool go_again = true;
3667         while (go_again)
3668         {
3669                 go_again = false;
3670                 for (int i = 0; i < 32; i++)
3671                 {
3672                         if (me[i] != NULL)
3673                         {
3674                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3675                                 {
3676                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3677                                         {
3678                                                 j->routes.clear();
3679                                                 j->CloseConnection();
3680                                                 me[i]->connectors.erase(j);
3681                                                 go_again = true;
3682                                                 break;
3683                                         }
3684                                 }
3685                         }
3686                 }
3687         }
3688 }
3689
3690
3691 char MODERR[MAXBUF];
3692
3693 char* ModuleError()
3694 {
3695         return MODERR;
3696 }
3697
3698 void erase_factory(int j)
3699 {
3700         int v = 0;
3701         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3702         {
3703                 if (v == j)
3704                 {
3705                         factory.erase(t);
3706                         factory.push_back(NULL);
3707                         return;
3708                 }
3709                 v++;
3710         }
3711 }
3712
3713 void erase_module(int j)
3714 {
3715         int v1 = 0;
3716         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3717         {
3718                 if (v1 == j)
3719                 {
3720                         delete *m;
3721                         modules.erase(m);
3722                         modules.push_back(NULL);
3723                         break;
3724                 }
3725                 v1++;
3726         }
3727         int v2 = 0;
3728         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3729         {
3730                 if (v2 == j)
3731                 {
3732                        module_names.erase(v);
3733                        break;
3734                 }
3735                 v2++;
3736         }
3737
3738 }
3739
3740 bool UnloadModule(const char* filename)
3741 {
3742         for (int j = 0; j != module_names.size(); j++)
3743         {
3744                 if (module_names[j] == std::string(filename))
3745                 {
3746                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3747                         {
3748                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3749                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3750                                 return false;
3751                         }
3752                         // found the module
3753                         log(DEBUG,"Deleting module...");
3754                         erase_module(j);
3755                         log(DEBUG,"Erasing module entry...");
3756                         erase_factory(j);
3757                         log(DEBUG,"Removing dependent commands...");
3758                         removecommands(filename);
3759                         log(DEFAULT,"Module %s unloaded",filename);
3760                         MODCOUNT--;
3761                         return true;
3762                 }
3763         }
3764         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3765         snprintf(MODERR,MAXBUF,"Module not loaded");
3766         return false;
3767 }
3768
3769 bool DirValid(char* dirandfile)
3770 {
3771         char work[MAXBUF];
3772         strlcpy(work,dirandfile,MAXBUF);
3773         int p = strlen(work);
3774         // we just want the dir
3775         while (strlen(work))
3776         {
3777                 if (work[p] == '/')
3778                 {
3779                         work[p] = '\0';
3780                         break;
3781                 }
3782                 work[p--] = '\0';
3783         }
3784         char buffer[MAXBUF], otherdir[MAXBUF];
3785         // Get the current working directory
3786         if( getcwd( buffer, MAXBUF ) == NULL )
3787                 return false;
3788         chdir(work);
3789         if( getcwd( otherdir, MAXBUF ) == NULL )
3790                 return false;
3791         chdir(buffer);
3792         if (strlen(otherdir) >= strlen(work))
3793         {
3794                 otherdir[strlen(work)] = '\0';
3795                 if (!strcmp(otherdir,work))
3796                 {
3797                         return true;
3798                 }
3799                 return false;
3800         }
3801         else return false;
3802 }
3803
3804 std::string GetFullProgDir(char** argv, int argc)
3805 {
3806         char work[MAXBUF];
3807         strlcpy(work,argv[0],MAXBUF);
3808         int p = strlen(work);
3809         // we just want the dir
3810         while (strlen(work))
3811         {
3812                 if (work[p] == '/')
3813                 {
3814                         work[p] = '\0';
3815                         break;
3816                 }
3817                 work[p--] = '\0';
3818         }
3819         char buffer[MAXBUF], otherdir[MAXBUF];
3820         // Get the current working directory
3821         if( getcwd( buffer, MAXBUF ) == NULL )
3822                 return "";
3823         chdir(work);
3824         if( getcwd( otherdir, MAXBUF ) == NULL )
3825                 return "";
3826         chdir(buffer);
3827         return otherdir;
3828 }
3829
3830 bool LoadModule(const char* filename)
3831 {
3832         char modfile[MAXBUF];
3833         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3834         if (!DirValid(modfile))
3835         {
3836                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3837                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3838                 return false;
3839         }
3840         log(DEBUG,"Loading module: %s",modfile);
3841         if (FileExists(modfile))
3842         {
3843                 for (int j = 0; j < module_names.size(); j++)
3844                 {
3845                         if (module_names[j] == std::string(filename))
3846                         {
3847                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3848                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3849                                 return false;
3850                         }
3851                 }
3852                 ircd_module* a = new ircd_module(modfile);
3853                 factory[MODCOUNT+1] = a;
3854                 if (factory[MODCOUNT+1]->LastError())
3855                 {
3856                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3857                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3858                         MODCOUNT--;
3859                         return false;
3860                 }
3861                 if (factory[MODCOUNT+1]->factory)
3862                 {
3863                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3864                         modules[MODCOUNT+1] = m;
3865                         /* save the module and the module's classfactory, if
3866                          * this isnt done, random crashes can occur :/ */
3867                         module_names.push_back(filename);
3868                 }
3869                 else
3870                 {
3871                         log(DEFAULT,"Unable to load %s",modfile);
3872                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3873                         return false;
3874                 }
3875         }
3876         else
3877         {
3878                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3879                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3880                 return false;
3881         }
3882         MODCOUNT++;
3883         return true;
3884 }
3885
3886 int InspIRCd(char** argv, int argc)
3887 {
3888         struct sockaddr_in client,server;
3889         char addrs[MAXBUF][255];
3890         int incomingSockfd, result = TRUE;
3891         socklen_t length;
3892         int count = 0;
3893         int selectResult = 0, selectResult2 = 0;
3894         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3895         fd_set selectFds;
3896         timeval tv;
3897
3898         std::string logpath = GetFullProgDir(argv,argc) + "/ircd.log";
3899         log_file = fopen(logpath.c_str(),"a+");
3900         if (!log_file)
3901         {
3902                 printf("ERROR: Could not write to logfile %s, bailing!\n\n",logpath.c_str());
3903                 Exit(ERROR);
3904         }
3905         printf("Logging to %s...\n",logpath.c_str());
3906
3907         log(DEFAULT,"$Id$");
3908         if (geteuid() == 0)
3909         {
3910                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3911                 Exit(ERROR);
3912                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3913         }
3914         SetupCommandTable();
3915         log(DEBUG,"InspIRCd: startup: default command table set up");
3916
3917         ReadConfig(true,NULL);
3918         if (DieValue[0])
3919         {
3920                 printf("WARNING: %s\n\n",DieValue);
3921                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3922                 exit(0);
3923         }
3924         log(DEBUG,"InspIRCd: startup: read config");
3925
3926         int clientportcount = 0, serverportcount = 0;
3927
3928         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3929         {
3930                 ConfValue("bind","port",count,configToken,&config_f);
3931                 ConfValue("bind","address",count,Addr,&config_f);
3932                 ConfValue("bind","type",count,Type,&config_f);
3933                 if (!strcmp(Type,"servers"))
3934                 {
3935                         char Default[MAXBUF];
3936                         strcpy(Default,"no");
3937                         ConfValue("bind","default",count,Default,&config_f);
3938                         if (strchr(Default,'y'))
3939                         {
3940                                 defaultRoute = serverportcount;
3941                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3942                         }
3943                         me[serverportcount] = new serverrec(ServerName,100L,false);
3944                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3945                         {
3946                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3947                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3948                         }
3949                         else
3950                         {
3951                                 serverportcount++;
3952                         }
3953                 }
3954                 else
3955                 {
3956                         ports[clientportcount] = atoi(configToken);
3957                         strlcpy(addrs[clientportcount],Addr,256);
3958                         clientportcount++;
3959                 }
3960                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3961         }
3962         portCount = clientportcount;
3963         SERVERportCount = serverportcount;
3964
3965         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)SERVERportCount);
3966         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3967
3968         printf("\n");
3969
3970         /* BugFix By Craig! :p */
3971         MODCOUNT = -1;
3972         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3973         {
3974                 ConfValue("module","name",count,configToken,&config_f);
3975                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3976                 if (!LoadModule(configToken))
3977                 {
3978                         log(DEFAULT,"Exiting due to a module loader error.");
3979                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3980                         Exit(0);
3981                 }
3982         }
3983         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3984
3985         startup_time = time(NULL);
3986
3987         char PID[MAXBUF];
3988         ConfValue("pid","file",0,PID,&config_f);
3989         // write once here, to try it out and make sure its ok
3990         WritePID(PID);
3991
3992         /* setup select call */
3993         FD_ZERO(&selectFds);
3994         log(DEBUG,"InspIRCd: startup: zero selects");
3995         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
3996
3997         for (count = 0; count < portCount; count++)
3998         {
3999                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
4000                 {
4001                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
4002                         return(ERROR);
4003                 }
4004                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
4005                 {
4006                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
4007                 }
4008                 else    /* well we at least bound to one socket so we'll continue */
4009                 {
4010                         boundPortCount++;
4011                 }
4012         }
4013
4014         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
4015
4016         /* if we didn't bind to anything then abort */
4017         if (boundPortCount == 0)
4018         {
4019                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
4020                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
4021                 return (ERROR);
4022         }
4023
4024
4025         printf("\nInspIRCd is now running!\n");
4026
4027         if (nofork)
4028         {
4029                 log(VERBOSE,"Not forking as -nofork was specified");
4030         }
4031         else
4032         {
4033                 if (DaemonSeed() == ERROR)
4034                 {
4035                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
4036                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
4037                         Exit(ERROR);
4038                 }
4039         }
4040
4041         WritePID(PID);
4042
4043         length = sizeof (client);
4044         char tcp_msg[MAXBUF],tcp_host[MAXBUF];
4045
4046         fd_set serverfds;
4047         timeval tvs;
4048         tvs.tv_usec = 10000L;
4049         tvs.tv_sec = 0;
4050         tv.tv_sec = 0;
4051         tv.tv_usec = 10000L;
4052         char data[65536];
4053         timeval tval;
4054         fd_set sfd;
4055         tval.tv_usec = 10000L;
4056         tval.tv_sec = 0;
4057         int total_in_this_set = 0;
4058         int v = 0;
4059         bool expire_run = false;
4060
4061         /* main loop, this never returns */
4062         for (;;)
4063         {
4064 #ifdef _POSIX_PRIORITY_SCHEDULING
4065                 sched_yield();
4066 #endif
4067                 // poll dns queue
4068                 dns_poll();
4069                 FD_ZERO(&sfd);
4070
4071                 // we only read time() once per iteration rather than tons of times!
4072                 TIME = time(NULL);
4073
4074                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
4075                 // them in a list, then reap the list every second or so.
4076                 if (((TIME % 5) == 0) && (!expire_run))
4077                 {
4078                         expire_lines();
4079                         FOREACH_MOD OnBackgroundTimer(TIME);
4080                         expire_run = true;
4081                         continue;
4082                 }
4083                 if ((TIME % 5) == 1)
4084                         expire_run = false;
4085
4086                 // fix by brain - this must be below any manipulation of the hashmap by modules
4087                 user_hash::iterator count2 = clientlist.begin();
4088
4089                 FD_ZERO(&serverfds);
4090
4091                 for (int x = 0; x != SERVERportCount; x++)
4092                 {
4093                         if (me[x])
4094                                 FD_SET(me[x]->fd, &serverfds);
4095                 }
4096
4097                 // serverFds timevals went here
4098
4099                 tvs.tv_usec = 30000L;
4100                 tvs.tv_sec = 0;
4101                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
4102                 if (servresult > 0)
4103                 {
4104                         for (int x = 0; x != SERVERportCount; x++)
4105                         {
4106                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
4107                                 {
4108                                         char remotehost[MAXBUF],resolved[MAXBUF];
4109                                         length = sizeof (client);
4110                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
4111                                         if (incomingSockfd != -1)
4112                                         {
4113                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
4114                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
4115                                                 {
4116                                                         strlcpy(resolved,remotehost,MAXBUF);
4117                                                 }
4118                                                 // add to this connections ircd_connector vector
4119                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
4120                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
4121                                         }
4122                                 }
4123                         }
4124                 }
4125
4126                 for (int x = 0; x < SERVERportCount; x++)
4127                 {
4128                         std::deque<std::string> msgs;
4129                         msgs.clear();
4130                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
4131                         {
4132                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
4133                                 {
4134                                         strlcpy(tcp_msg,msgs[ctr].c_str(),MAXBUF);
4135                                         log(DEBUG,"Processing: %s",tcp_msg);
4136                                         if (!tcp_msg[0])
4137                                         {
4138                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
4139                                                 break;
4140                                         }
4141                                         // during a netburst, send all data to all other linked servers
4142                                         if ((((nb_start>0) && (tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))) || (is_uline(tcp_host)))
4143                                         {
4144                                                 if (is_uline(tcp_host))
4145                                                 {
4146                                                         if ((tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))
4147                                                         {
4148                                                                 NetSendToAllExcept(tcp_host,tcp_msg);
4149                                                         }
4150                                                 }
4151                                                 else
4152                                                         NetSendToAllExcept(tcp_host,tcp_msg);
4153                                         }
4154                                         std::string msg = tcp_msg;
4155                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
4156                                         strlcpy(tcp_msg,msg.c_str(),MAXBUF);
4157                                         handle_link_packet(tcp_msg, tcp_host, me[x]);
4158                                 }
4159                                 goto label;
4160                         }
4161                 }
4162
4163
4164         while (count2 != clientlist.end())
4165         {
4166                 FD_ZERO(&sfd);
4167                 total_in_this_set = 0;
4168
4169                 user_hash::iterator xcount = count2;
4170                 user_hash::iterator endingiter = count2;
4171
4172                 if (count2 == clientlist.end()) break;
4173
4174                 userrec* curr = NULL;
4175
4176                 if (count2->second)
4177                         curr = count2->second;
4178
4179                 if ((curr) && (curr->fd != 0))
4180                 {
4181 #ifdef _POSIX_PRIORITY_SCHEDULING
4182         sched_yield();
4183 #endif
4184                         // assemble up to 64 sockets into an fd_set
4185                         // to implement a pooling mechanism.
4186                         //
4187                         // This should be up to 64x faster than the
4188                         // old implementation.
4189                         while (total_in_this_set < 64)
4190                         {
4191                                 if (count2 != clientlist.end())
4192                                 {
4193                                         curr = count2->second;
4194                                         // we don't check the state of remote users.
4195                                         if ((curr->fd != -1) && (curr->fd != FD_MAGIC_NUMBER))
4196                                         {
4197                                                 FD_SET (curr->fd, &sfd);
4198
4199                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4200                                                 // their connection class.
4201                                                 if ((TIME > curr->timeout) && (curr->registered != 7))
4202                                                 {
4203                                                         log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
4204                                                         kill_link(curr,"Registration timeout");
4205                                                         goto label;
4206                                                 }
4207                                                 if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4208                                                 {
4209                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
4210                                                         curr->dns_done = true;
4211                                                         statsDnsBad++;
4212                                                         FullConnectUser(curr);
4213                                                         goto label;
4214                                                 }
4215                                                 if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr))) // both NICK and USER... and DNS
4216                                                 {
4217                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4218                                                         FullConnectUser(curr);
4219                                                         goto label;
4220                                                 }
4221                                                 if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
4222                                                 {
4223                                                         if ((!curr->lastping) && (curr->registered == 7))
4224                                                         {
4225                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
4226                                                                 kill_link(curr,"Ping timeout");
4227                                                                 goto label;
4228                                                         }
4229                                                         Write(curr->fd,"PING :%s",ServerName);
4230                                                         log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
4231                                                         curr->lastping = 0;
4232                                                         curr->nping = TIME+curr->pingmax;       // was hard coded to 120
4233                                                 }
4234                                         }
4235                                         count2++;
4236                                         total_in_this_set++;
4237                                 }
4238                                 else break;
4239                         }
4240
4241                         endingiter = count2;
4242                         count2 = xcount; // roll back to where we were
4243
4244                         v = 0;
4245
4246                         // tvals defined here
4247
4248                         tval.tv_usec = 1000L;
4249                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
4250
4251                         // now loop through all of the items in this pool if any are waiting
4252                         if (selectResult2 > 0)
4253                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4254                         {
4255
4256 #ifdef _POSIX_PRIORITY_SCHEDULING
4257                                 sched_yield();
4258 #endif
4259                                 userrec* cu = count2a->second;
4260                                 result = EAGAIN;
4261                                 if ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1) && (FD_ISSET (cu->fd, &sfd)))
4262                                 {
4263                                         log(DEBUG,"Data waiting on socket %d",cu->fd);
4264                                         int MOD_RESULT = 0;
4265                                         int result2 = 0;
4266                                         FOREACH_RESULT(OnRawSocketRead(cu->fd,data,65535,result2));
4267                                         if (!MOD_RESULT)
4268                                         {
4269                                                 result = read(cu->fd, data, 65535);
4270                                         }
4271                                         else result = result2;
4272                                         log(DEBUG,"Read result: %d",result);
4273                                         if (result)
4274                                         {
4275                                                 statsRecv += result;
4276                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4277                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4278                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4279                                                 for (int checker = 0; checker < result; checker++)
4280                                                 {
4281                                                         if ((data[checker] == 0) || (data[checker] == 7))
4282                                                                 data[checker] = ' ';
4283                                                 }
4284                                                 if (result > 0)
4285                                                         data[result] = '\0';
4286                                                 userrec* current = cu;
4287                                                 int currfd = current->fd;
4288                                                 int floodlines = 0;
4289                                                 // add the data to the users buffer
4290                                                 if (!current->AddBuffer(data))
4291                                                 {
4292                                                         // AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
4293                                                         if (current->registered == 7)
4294                                                         {
4295                                                                 kill_link(current,"RecvQ exceeded");
4296                                                         }
4297                                                         else
4298                                                         {
4299                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4300                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4301                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4302                                                                 apply_lines();
4303                                                         }
4304                                                         goto label;
4305                                                 }
4306                                                 if (current->recvq.length() > NetBufferSize)
4307                                                 {
4308                                                         if (current->registered == 7)
4309                                                         {
4310                                                                 kill_link(current,"RecvQ exceeded");
4311                                                         }
4312                                                         else
4313                                                         {
4314                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4315                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4316                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4317                                                                 apply_lines();
4318                                                         }
4319                                                         goto label;
4320                                                 }
4321                                                 // while there are complete lines to process...
4322                                                 while (current->BufferIsReady())
4323                                                 {
4324                                                         floodlines++;
4325                                                         if (TIME > current->reset_due)
4326                                                         {
4327                                                                 current->reset_due = TIME + current->threshold;
4328                                                                 current->lines_in = 0;
4329                                                         }
4330                                                         current->lines_in++;
4331                                                         if (current->lines_in > current->flood)
4332                                                         {
4333                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4334                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4335                                                                 kill_link(current,"Excess flood");
4336                                                                 goto label;
4337                                                         }
4338                                                         if ((floodlines > current->flood) && (current->flood != 0))
4339                                                         {
4340                                                                 if (current->registered == 7)
4341                                                                 {
4342                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4343                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4344                                                                         kill_link(current,"Excess flood");
4345                                                                 }
4346                                                                 else
4347                                                                 {
4348                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4349                                                                         apply_lines();
4350                                                                 }
4351                                                                 goto label;
4352                                                         }
4353                                                         char sanitized[MAXBUF];
4354                                                         // use GetBuffer to copy single lines into the sanitized string
4355                                                         std::string single_line = current->GetBuffer();
4356                                                         current->bytes_in += single_line.length();
4357                                                         current->cmds_in++;
4358                                                         if (single_line.length()>512)
4359                                                         {
4360                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4361                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4362                                                                 kill_link(current,"Excess flood");
4363                                                                 goto label;
4364                                                         }
4365                                                         strlcpy(sanitized,single_line.c_str(),MAXBUF);
4366                                                         if (*sanitized)
4367                                                         {
4368                                                                 userrec* old_comp = fd_ref_table[currfd];
4369                                                                 // we're gonna re-scan to check if the nick is gone, after every
4370                                                                 // command - if it has, we're gonna bail
4371                                                                 process_buffer(sanitized,current);
4372                                                                 // look for the user's record in case it's changed... if theyve quit,
4373                                                                 // we cant do anything more with their buffer, so bail.
4374                                                                 // there used to be an ugly, slow loop here. Now we have a reference
4375                                                                 // table, life is much easier (and FASTER)
4376                                                                 userrec* new_comp = fd_ref_table[currfd];
4377                                                                 if ((currfd < 0) || (!fd_ref_table[currfd]) || (old_comp != new_comp))
4378                                                                         goto label;
4379
4380                                                         }
4381                                                 }
4382                                                 goto label;
4383                                         }
4384
4385                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4386                                         {
4387                                                 log(DEBUG,"killing: %s",cu->nick);
4388                                                 kill_link(cu,strerror(errno));
4389                                                 goto label;
4390                                         }
4391                                 }
4392                                 // result EAGAIN means nothing read
4393                                 if (result == EAGAIN)
4394                                 {
4395                                 }
4396                                 else
4397                                 if (result == 0)
4398                                 {
4399                                         if (count2->second)
4400                                         {
4401                                                 log(DEBUG,"InspIRCd: Exited: %s",cu->nick);
4402                                                 kill_link(cu,"Client exited");
4403                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4404                                                 log(DEBUG,"Bailing from client exit");
4405                                                 goto label;
4406                                         }
4407                                 }
4408                                 else if (result > 0)
4409                                 {
4410                                 }
4411                         }
4412                 }
4413                 for (int q = 0; q < total_in_this_set; q++)
4414                 {
4415                         count2++;
4416                 }
4417         }
4418
4419 #ifdef _POSIX_PRIORITY_SCHEDULING
4420         sched_yield();
4421 #endif
4422
4423         // set up select call
4424         for (count = 0; count < boundPortCount; count++)
4425         {
4426                 FD_SET (openSockfd[count], &selectFds);
4427         }
4428
4429         tv.tv_usec = 30000L;
4430         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4431
4432         /* select is reporting a waiting socket. Poll them all to find out which */
4433         if (selectResult > 0)
4434         {
4435                 char target[MAXBUF], resolved[MAXBUF];
4436                 for (count = 0; count < boundPortCount; count++)
4437                 {
4438                         if (FD_ISSET (openSockfd[count], &selectFds))
4439                         {
4440                                 length = sizeof (client);
4441                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4442
4443                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4444                                 strlcpy (resolved, target, MAXBUF);
4445
4446                                 if (incomingSockfd < 0)
4447                                 {
4448                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4449                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4450                                         statsRefused++;
4451                                 }
4452                                 else
4453                                 {
4454                                         FOREACH_MOD OnRawSocketAccept(incomingSockfd, resolved, ports[count]);
4455                                         statsAccept++;
4456                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4457                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4458                                 }
4459                                 goto label;
4460                         }
4461                 }
4462         }
4463         label:
4464         if (0) {};
4465 #ifdef _POSIX_PRIORITY_SCHEDULING
4466         sched_yield();
4467         sched_yield();
4468 #endif
4469 }
4470 /* not reached */
4471 close (incomingSockfd);
4472 }
4473