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
1503         std::vector<char*> *ulist = c->GetUsers();
1504         for (int i = 0; i < ulist->size(); i++)
1505         {
1506                 char* o = (*ulist)[i];
1507                 userrec* otheruser = (userrec*)o;
1508                 if ((!has_channel(user,c)) && (strchr(otheruser->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(otheruser,c),MAXBUF);
1515                 strlcat(list,otheruser->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         /* if whats left in the list isnt empty, send it */
1526         if (list[strlen(list)-1] != ':')
1527         {
1528                 WriteServ(user->fd,"%s",list);
1529         }
1530 }
1531
1532 /* return a count of the users on a specific channel accounting for
1533  * invisible users who won't increase the count. e.g. for /LIST */
1534
1535 int usercount_i(chanrec *c)
1536 {
1537         int count = 0;
1538
1539         if (!c)
1540         {
1541                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
1542                 return 0;
1543         }
1544
1545         strcpy(list,"");
1546         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1547         {
1548                 if (i->second)
1549                 {
1550                         if (has_channel(i->second,c))
1551                         {
1552                                 if (isnick(i->second->nick))
1553                                 {
1554                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
1555                                         {
1556                                                 /* user is +i, and source not on the channel, does not show
1557                                                  * nick in NAMES list */
1558                                                 continue;
1559                                         }
1560                                         count++;
1561                                 }
1562                         }
1563                 }
1564         }
1565         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
1566         return count;
1567 }
1568
1569
1570 int usercount(chanrec *c)
1571 {
1572         if (!c)
1573         {
1574                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
1575                 return 0;
1576         }
1577         int count = c->GetUserCounter();
1578         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
1579         return count;
1580 }
1581
1582
1583 /* add a channel to a user, creating the record for it if needed and linking
1584  * it to the user record */
1585
1586 chanrec* add_channel(userrec *user, const char* cn, const char* key, bool override)
1587 {
1588         if ((!user) || (!cn))
1589         {
1590                 log(DEFAULT,"*** BUG *** add_channel was given an invalid parameter");
1591                 return 0;
1592         }
1593
1594         chanrec* Ptr;
1595         int created = 0;
1596         char cname[MAXBUF];
1597
1598         strncpy(cname,cn,MAXBUF);
1599
1600         // we MUST declare this wherever we use FOREACH_RESULT
1601         int MOD_RESULT = 0;
1602
1603         if (strlen(cname) > CHANMAX-1)
1604         {
1605                 cname[CHANMAX-1] = '\0';
1606         }
1607
1608         log(DEBUG,"add_channel: %s %s",user->nick,cname);
1609
1610         if ((FindChan(cname)) && (has_channel(user,FindChan(cname))))
1611         {
1612                 return NULL; // already on the channel!
1613         }
1614
1615
1616         if (!FindChan(cname))
1617         {
1618                 MOD_RESULT = 0;
1619                 FOREACH_RESULT(OnUserPreJoin(user,NULL,cname));
1620                 if (MOD_RESULT == 1) {
1621                         return NULL;
1622                 }
1623
1624                 /* create a new one */
1625                 log(DEBUG,"add_channel: creating: %s",cname);
1626                 {
1627                         chanlist[cname] = new chanrec();
1628
1629                         strlcpy(chanlist[cname]->name, cname,CHANMAX);
1630                         chanlist[cname]->topiclock = 1;
1631                         chanlist[cname]->noexternal = 1;
1632                         chanlist[cname]->created = TIME;
1633                         strcpy(chanlist[cname]->topic, "");
1634                         strncpy(chanlist[cname]->setby, user->nick,NICKMAX);
1635                         chanlist[cname]->topicset = 0;
1636                         Ptr = chanlist[cname];
1637                         log(DEBUG,"add_channel: created: %s",cname);
1638                         /* set created to 2 to indicate user
1639                          * is the first in the channel
1640                          * and should be given ops */
1641                         created = 2;
1642                 }
1643         }
1644         else
1645         {
1646                 /* channel exists, just fish out a pointer to its struct */
1647                 Ptr = FindChan(cname);
1648                 if (Ptr)
1649                 {
1650                         log(DEBUG,"add_channel: joining to: %s",Ptr->name);
1651
1652                         // the override flag allows us to bypass channel modes
1653                         // and bans (used by servers)
1654                         if ((!override) || (!strcasecmp(user->server,ServerName)))
1655                         {
1656                                 log(DEBUG,"Not overriding...");
1657                                 MOD_RESULT = 0;
1658                                 FOREACH_RESULT(OnUserPreJoin(user,Ptr,cname));
1659                                 if (MOD_RESULT == 1) {
1660                                         return NULL;
1661                                 }
1662                                 log(DEBUG,"MOD_RESULT=%d",MOD_RESULT);
1663
1664                                 if (!MOD_RESULT)
1665                                 {
1666                                         log(DEBUG,"add_channel: checking key, invite, etc");
1667                                         MOD_RESULT = 0;
1668                                         FOREACH_RESULT(OnCheckKey(user, Ptr, key ? key : ""));
1669                                         if (MOD_RESULT == 0)
1670                                         {
1671                                                 if (Ptr->key[0])
1672                                                 {
1673                                                         log(DEBUG,"add_channel: %s has key %s",Ptr->name,Ptr->key);
1674                                                         if (!key)
1675                                                         {
1676                                                                 log(DEBUG,"add_channel: no key given in JOIN");
1677                                                                 WriteServ(user->fd,"475 %s %s :Cannot join channel (Requires key)",user->nick, Ptr->name);
1678                                                                 return NULL;
1679                                                         }
1680                                                         else
1681                                                         {
1682                                                                 if (strcasecmp(key,Ptr->key))
1683                                                                 {
1684                                                                         log(DEBUG,"add_channel: bad key given in JOIN");
1685                                                                         WriteServ(user->fd,"475 %s %s :Cannot join channel (Incorrect key)",user->nick, Ptr->name);
1686                                                                         return NULL;
1687                                                                 }
1688                                                         }
1689                                                 }
1690                                                 log(DEBUG,"add_channel: no key");
1691                                         }
1692                                         MOD_RESULT = 0;
1693                                         FOREACH_RESULT(OnCheckInvite(user, Ptr));
1694                                         if (MOD_RESULT == 0)
1695                                         {
1696                                                 if (Ptr->inviteonly)
1697                                                 {
1698                                                         log(DEBUG,"add_channel: channel is +i");
1699                                                         if (user->IsInvited(Ptr->name))
1700                                                         {
1701                                                                 /* user was invited to channel */
1702                                                                 /* there may be an optional channel NOTICE here */
1703                                                         }
1704                                                         else
1705                                                         {
1706                                                                 WriteServ(user->fd,"473 %s %s :Cannot join channel (Invite only)",user->nick, Ptr->name);
1707                                                                 return NULL;
1708                                                         }
1709                                                 }
1710                                                 log(DEBUG,"add_channel: channel is not +i");
1711                                         }
1712                                         MOD_RESULT = 0;
1713                                         FOREACH_RESULT(OnCheckLimit(user, Ptr));
1714                                         if (MOD_RESULT == 0)
1715                                         {
1716                                                 if (Ptr->limit)
1717                                                 {
1718                                                         if (usercount(Ptr) >= Ptr->limit)
1719                                                         {
1720                                                                 WriteServ(user->fd,"471 %s %s :Cannot join channel (Channel is full)",user->nick, Ptr->name);
1721                                                                 return NULL;
1722                                                         }
1723                                                 }
1724                                         }
1725                                         log(DEBUG,"add_channel: about to walk banlist");
1726                                         MOD_RESULT = 0;
1727                                         FOREACH_RESULT(OnCheckBan(user, Ptr));
1728                                         if (MOD_RESULT == 0)
1729                                         {
1730                                                 /* check user against the channel banlist */
1731                                                 if (Ptr)
1732                                                 {
1733                                                         if (Ptr->bans.size())
1734                                                         {
1735                                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1736                                                                 {
1737                                                                         if (match(user->GetFullHost(),i->data))
1738                                                                         {
1739                                                                                 WriteServ(user->fd,"474 %s %s :Cannot join channel (You're banned)",user->nick, Ptr->name);
1740                                                                                 return NULL;
1741                                                                         }
1742                                                                 }
1743                                                         }
1744                                                 }
1745                                                 log(DEBUG,"add_channel: bans checked");
1746                                         }
1747
1748                                 }
1749
1750
1751                                 if ((Ptr) && (user))
1752                                 {
1753                                         user->RemoveInvite(Ptr->name);
1754                                 }
1755
1756                                 log(DEBUG,"add_channel: invites removed");
1757
1758                         }
1759                         else
1760                         {
1761                                 log(DEBUG,"Overridden checks");
1762                         }
1763
1764
1765                 }
1766                 created = 1;
1767         }
1768
1769         log(DEBUG,"Passed channel checks");
1770
1771         for (int index =0; index != MAXCHANS; index++)
1772         {
1773                 log(DEBUG,"Check location %d",index);
1774                 if (user->chans[index].channel == NULL)
1775                 {
1776                         log(DEBUG,"Adding into their channel list at location %d",index);
1777
1778                         if (created == 2)
1779                         {
1780                                 /* first user in is given ops */
1781                                 user->chans[index].uc_modes = UCMODE_OP;
1782                         }
1783                         else
1784                         {
1785                                 user->chans[index].uc_modes = 0;
1786                         }
1787                         user->chans[index].channel = Ptr;
1788                         Ptr->IncUserCounter();
1789                         Ptr->AddUser((char*)user);
1790                         WriteChannel(Ptr,user,"JOIN :%s",Ptr->name);
1791
1792                         if (!override) // we're not overriding... so this isnt part of a netburst, broadcast it.
1793                         {
1794                                 // use the stamdard J token with no privilages.
1795                                 char buffer[MAXBUF];
1796                                 if (created == 2)
1797                                 {
1798                                         snprintf(buffer,MAXBUF,"J %s @%s",user->nick,Ptr->name);
1799                                 }
1800                                 else
1801                                 {
1802                                         snprintf(buffer,MAXBUF,"J %s %s",user->nick,Ptr->name);
1803                                 }
1804                                 NetSendToAll(buffer);
1805                         }
1806
1807                         log(DEBUG,"Sent JOIN to client");
1808
1809                         if (Ptr->topicset)
1810                         {
1811                                 WriteServ(user->fd,"332 %s %s :%s", user->nick, Ptr->name, Ptr->topic);
1812                                 WriteServ(user->fd,"333 %s %s %s %lu", user->nick, Ptr->name, Ptr->setby, (unsigned long)Ptr->topicset);
1813                         }
1814                         userlist(user,Ptr);
1815                         WriteServ(user->fd,"366 %s %s :End of /NAMES list.", user->nick, Ptr->name);
1816                         //WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name,chanmodes(Ptr));
1817                         //WriteServ(user->fd,"329 %s %s %lu", user->nick, Ptr->name, (unsigned long)Ptr->created);
1818                         FOREACH_MOD OnUserJoin(user,Ptr);
1819                         return Ptr;
1820                 }
1821         }
1822         log(DEBUG,"add_channel: user channel max exceeded: %s %s",user->nick,cname);
1823         WriteServ(user->fd,"405 %s %s :You are on too many channels",user->nick, cname);
1824         return NULL;
1825 }
1826
1827 /* remove a channel from a users record, and remove the record from memory
1828  * if the channel has become empty */
1829
1830 chanrec* del_channel(userrec *user, const char* cname, const char* reason, bool local)
1831 {
1832         if ((!user) || (!cname))
1833         {
1834                 log(DEFAULT,"*** BUG *** del_channel was given an invalid parameter");
1835                 return NULL;
1836         }
1837
1838         chanrec* Ptr;
1839
1840         if ((!cname) || (!user))
1841         {
1842                 return NULL;
1843         }
1844
1845         Ptr = FindChan(cname);
1846
1847         if (!Ptr)
1848         {
1849                 return NULL;
1850         }
1851
1852         FOREACH_MOD OnUserPart(user,Ptr);
1853         log(DEBUG,"del_channel: removing: %s %s",user->nick,Ptr->name);
1854
1855         for (int i =0; i != MAXCHANS; i++)
1856         {
1857                 /* zap it from the channel list of the user */
1858                 if (user->chans[i].channel == Ptr)
1859                 {
1860                         if (reason)
1861                         {
1862                                 WriteChannel(Ptr,user,"PART %s :%s",Ptr->name, reason);
1863
1864                                 if (!local)
1865                                 {
1866                                         char buffer[MAXBUF];
1867                                         snprintf(buffer,MAXBUF,"L %s %s :%s",user->nick,Ptr->name,reason);
1868                                         NetSendToAll(buffer);
1869                                 }
1870
1871
1872                         }
1873                         else
1874                         {
1875                                 if (!local)
1876                                 {
1877                                         char buffer[MAXBUF];
1878                                         snprintf(buffer,MAXBUF,"L %s %s :",user->nick,Ptr->name);
1879                                         NetSendToAll(buffer);
1880                                 }
1881
1882                                 WriteChannel(Ptr,user,"PART :%s",Ptr->name);
1883                         }
1884                         user->chans[i].uc_modes = 0;
1885                         user->chans[i].channel = NULL;
1886                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1887                         break;
1888                 }
1889         }
1890
1891         Ptr->DecUserCounter();
1892         Ptr->DelUser((char*)user);
1893
1894         /* if there are no users left on the channel */
1895         if (!usercount(Ptr))
1896         {
1897                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1898
1899                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1900
1901                 /* kill the record */
1902                 if (iter != chanlist.end())
1903                 {
1904                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1905                         delete Ptr;
1906                         chanlist.erase(iter);
1907                 }
1908         }
1909 }
1910
1911
1912 void kick_channel(userrec *src,userrec *user, chanrec *Ptr, char* reason)
1913 {
1914         if ((!src) || (!user) || (!Ptr) || (!reason))
1915         {
1916                 log(DEFAULT,"*** BUG *** kick_channel was given an invalid parameter");
1917                 return;
1918         }
1919
1920         if ((!Ptr) || (!user) || (!src))
1921         {
1922                 return;
1923         }
1924
1925         log(DEBUG,"kick_channel: removing: %s %s %s",user->nick,Ptr->name,src->nick);
1926
1927         if (!has_channel(user,Ptr))
1928         {
1929                 WriteServ(src->fd,"441 %s %s %s :They are not on that channel",src->nick, user->nick, Ptr->name);
1930                 return;
1931         }
1932
1933         int MOD_RESULT = 0;
1934         FOREACH_RESULT(OnAccessCheck(src,user,Ptr,AC_KICK));
1935         if (MOD_RESULT == ACR_DENY)
1936                 return;
1937
1938         if (MOD_RESULT == ACR_DEFAULT)
1939         {
1940                 if (((cstatus(src,Ptr) < STATUS_HOP) || (cstatus(src,Ptr) < cstatus(user,Ptr))) && (!is_uline(src->server)))
1941                 {
1942                         if (cstatus(src,Ptr) == STATUS_HOP)
1943                         {
1944                                 WriteServ(src->fd,"482 %s %s :You must be a channel operator",src->nick, Ptr->name);
1945                         }
1946                         else
1947                         {
1948                                 WriteServ(src->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",src->nick, Ptr->name);
1949                         }
1950
1951                         return;
1952                 }
1953         }
1954
1955         MOD_RESULT = 0;
1956         FOREACH_RESULT(OnUserPreKick(src,user,Ptr,reason));
1957         if (MOD_RESULT)
1958                 return;
1959
1960         FOREACH_MOD OnUserKick(src,user,Ptr,reason);
1961
1962         for (int i =0; i != MAXCHANS; i++)
1963         {
1964                 /* zap it from the channel list of the user */
1965                 if (user->chans[i].channel)
1966                 if (!strcasecmp(user->chans[i].channel->name,Ptr->name))
1967                 {
1968                         WriteChannel(Ptr,src,"KICK %s %s :%s",Ptr->name, user->nick, reason);
1969                         user->chans[i].uc_modes = 0;
1970                         user->chans[i].channel = NULL;
1971                         log(DEBUG,"del_channel: unlinked: %s %s",user->nick,Ptr->name);
1972                         break;
1973                 }
1974         }
1975
1976         Ptr->DecUserCounter();
1977         Ptr->DelUser((char*)user);
1978
1979         /* if there are no users left on the channel */
1980         if (!usercount(Ptr))
1981         {
1982                 chan_hash::iterator iter = chanlist.find(Ptr->name);
1983
1984                 log(DEBUG,"del_channel: destroying channel: %s",Ptr->name);
1985
1986                 /* kill the record */
1987                 if (iter != chanlist.end())
1988                 {
1989                         log(DEBUG,"del_channel: destroyed: %s",Ptr->name);
1990                         delete Ptr;
1991                         chanlist.erase(iter);
1992                 }
1993         }
1994 }
1995
1996
1997
1998
1999 /* This function pokes and hacks at a parameter list like the following:
2000  *
2001  * PART #winbot,#darkgalaxy :m00!
2002  *
2003  * to turn it into a series of individual calls like this:
2004  *
2005  * PART #winbot :m00!
2006  * PART #darkgalaxy :m00!
2007  *
2008  * The seperate calls are sent to a callback function provided by the caller
2009  * (the caller will usually call itself recursively). The callback function
2010  * must be a command handler. Calling this function on a line with no list causes
2011  * no action to be taken. You must provide a starting and ending parameter number
2012  * where the range of the list can be found, useful if you have a terminating
2013  * parameter as above which is actually not part of the list, or parameters
2014  * before the actual list as well. This code is used by many functions which
2015  * can function as "one to list" (see the RFC) */
2016
2017 int loop_call(handlerfunc fn, char **parameters, int pcnt, userrec *u, int start, int end, int joins)
2018 {
2019         char plist[MAXBUF];
2020         char *param;
2021         char *pars[32];
2022         char blog[32][MAXBUF];
2023         char blog2[32][MAXBUF];
2024         int j = 0, q = 0, total = 0, t = 0, t2 = 0, total2 = 0;
2025         char keystr[MAXBUF];
2026         char moo[MAXBUF];
2027
2028         for (int i = 0; i <32; i++)
2029                 strcpy(blog[i],"");
2030
2031         for (int i = 0; i <32; i++)
2032                 strcpy(blog2[i],"");
2033
2034         strcpy(moo,"");
2035         for (int i = 0; i <10; i++)
2036         {
2037                 if (!parameters[i])
2038                 {
2039                         parameters[i] = moo;
2040                 }
2041         }
2042         if (joins)
2043         {
2044                 if (pcnt > 1) /* we have a key to copy */
2045                 {
2046                         strlcpy(keystr,parameters[1],MAXBUF);
2047                 }
2048         }
2049
2050         if (!parameters[start])
2051         {
2052                 return 0;
2053         }
2054         if (!strchr(parameters[start],','))
2055         {
2056                 return 0;
2057         }
2058         strcpy(plist,"");
2059         for (int i = start; i <= end; i++)
2060         {
2061                 if (parameters[i])
2062                 {
2063                         strlcat(plist,parameters[i],MAXBUF);
2064                 }
2065         }
2066
2067         j = 0;
2068         param = plist;
2069
2070         t = strlen(plist);
2071         for (int i = 0; i < t; i++)
2072         {
2073                 if (plist[i] == ',')
2074                 {
2075                         plist[i] = '\0';
2076                         strlcpy(blog[j++],param,MAXBUF);
2077                         param = plist+i+1;
2078                         if (j>20)
2079                         {
2080                                 WriteServ(u->fd,"407 %s %s :Too many targets in list, message not delivered.",u->nick,blog[j-1]);
2081                                 return 1;
2082                         }
2083                 }
2084         }
2085         strlcpy(blog[j++],param,MAXBUF);
2086         total = j;
2087
2088         if ((joins) && (keystr) && (total>0)) // more than one channel and is joining
2089         {
2090                 strcat(keystr,",");
2091         }
2092
2093         if ((joins) && (keystr))
2094         {
2095                 if (strchr(keystr,','))
2096                 {
2097                         j = 0;
2098                         param = keystr;
2099                         t2 = strlen(keystr);
2100                         for (int i = 0; i < t2; i++)
2101                         {
2102                                 if (keystr[i] == ',')
2103                                 {
2104                                         keystr[i] = '\0';
2105                                         strlcpy(blog2[j++],param,MAXBUF);
2106                                         param = keystr+i+1;
2107                                 }
2108                         }
2109                         strlcpy(blog2[j++],param,MAXBUF);
2110                         total2 = j;
2111                 }
2112         }
2113
2114         for (j = 0; j < total; j++)
2115         {
2116                 if (blog[j])
2117                 {
2118                         pars[0] = blog[j];
2119                 }
2120                 for (q = end; q < pcnt-1; q++)
2121                 {
2122                         if (parameters[q+1])
2123                         {
2124                                 pars[q-end+1] = parameters[q+1];
2125                         }
2126                 }
2127                 if ((joins) && (parameters[1]))
2128                 {
2129                         if (pcnt > 1)
2130                         {
2131                                 pars[1] = blog2[j];
2132                         }
2133                         else
2134                         {
2135                                 pars[1] = NULL;
2136                         }
2137                 }
2138                 /* repeatedly call the function with the hacked parameter list */
2139                 if ((joins) && (pcnt > 1))
2140                 {
2141                         if (pars[1])
2142                         {
2143                                 // pars[1] already set up and containing key from blog2[j]
2144                                 fn(pars,2,u);
2145                         }
2146                         else
2147                         {
2148                                 pars[1] = parameters[1];
2149                                 fn(pars,2,u);
2150                         }
2151                 }
2152                 else
2153                 {
2154                         fn(pars,pcnt-(end-start),u);
2155                 }
2156         }
2157
2158         return 1;
2159 }
2160
2161
2162
2163 void kill_link(userrec *user,const char* r)
2164 {
2165         user_hash::iterator iter = clientlist.find(user->nick);
2166
2167         char reason[MAXBUF];
2168
2169         strncpy(reason,r,MAXBUF);
2170
2171         if (strlen(reason)>MAXQUIT)
2172         {
2173                 reason[MAXQUIT-1] = '\0';
2174         }
2175
2176         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2177         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2178         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2179
2180         if (user->registered == 7) {
2181                 FOREACH_MOD OnUserQuit(user);
2182                 WriteCommonExcept(user,"QUIT :%s",reason);
2183
2184                 // Q token must go to ALL servers!!!
2185                 char buffer[MAXBUF];
2186                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2187                 NetSendToAll(buffer);
2188         }
2189
2190         FOREACH_MOD OnUserDisconnect(user);
2191
2192         if (user->fd > -1)
2193         {
2194                 FOREACH_MOD OnRawSocketClose(user->fd);
2195                 shutdown(user->fd,2);
2196                 close(user->fd);
2197         }
2198
2199         if (user->registered == 7) {
2200                 WriteOpers("*** Client exiting: %s!%s@%s [%s]",user->nick,user->ident,user->host,reason);
2201                 AddWhoWas(user);
2202         }
2203
2204         if (user->registered == 7) {
2205                 purge_empty_chans(user);
2206         }
2207
2208         if (iter != clientlist.end())
2209         {
2210                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2211                 if (user->fd > -1)
2212                         fd_ref_table[user->fd] = NULL;
2213                 delete user;
2214                 clientlist.erase(iter);
2215         }
2216 }
2217
2218 void kill_link_silent(userrec *user,const char* r)
2219 {
2220         user_hash::iterator iter = clientlist.find(user->nick);
2221
2222         char reason[MAXBUF];
2223
2224         strncpy(reason,r,MAXBUF);
2225
2226         if (strlen(reason)>MAXQUIT)
2227         {
2228                 reason[MAXQUIT-1] = '\0';
2229         }
2230
2231         log(DEBUG,"kill_link: %s '%s'",user->nick,reason);
2232         Write(user->fd,"ERROR :Closing link (%s@%s) [%s]",user->ident,user->host,reason);
2233         log(DEBUG,"closing fd %lu",(unsigned long)user->fd);
2234
2235         if (user->registered == 7) {
2236                 FOREACH_MOD OnUserQuit(user);
2237                 WriteCommonExcept(user,"QUIT :%s",reason);
2238
2239                 // Q token must go to ALL servers!!!
2240                 char buffer[MAXBUF];
2241                 snprintf(buffer,MAXBUF,"Q %s :%s",user->nick,reason);
2242                 NetSendToAll(buffer);
2243         }
2244
2245         FOREACH_MOD OnUserDisconnect(user);
2246
2247         if (user->fd > -1)
2248         {
2249                 FOREACH_MOD OnRawSocketClose(user->fd);
2250                 shutdown(user->fd,2);
2251                 close(user->fd);
2252         }
2253
2254         if (user->registered == 7) {
2255                 purge_empty_chans(user);
2256         }
2257
2258         if (iter != clientlist.end())
2259         {
2260                 log(DEBUG,"deleting user hash value %lu",(unsigned long)user);
2261                 if (user->fd > -1)
2262                         fd_ref_table[user->fd] = NULL;
2263                 delete user;
2264                 clientlist.erase(iter);
2265         }
2266 }
2267
2268
2269
2270 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
2271
2272 char* Passwd(userrec *user)
2273 {
2274         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2275         {
2276                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
2277                 {
2278                         return i->pass;
2279                 }
2280         }
2281         return "";
2282 }
2283
2284 bool IsDenied(userrec *user)
2285 {
2286         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2287         {
2288                 if (match(user->host,i->host) && (i->type == CC_DENY))
2289                 {
2290                         return true;
2291                 }
2292         }
2293         return false;
2294 }
2295
2296
2297
2298
2299 /* sends out an error notice to all connected clients (not to be used
2300  * lightly!) */
2301
2302 void send_error(char *s)
2303 {
2304         log(DEBUG,"send_error: %s",s);
2305         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2306         {
2307                 if (isnick(i->second->nick))
2308                 {
2309                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
2310                 }
2311                 else
2312                 {
2313                         // fix - unregistered connections receive ERROR, not NOTICE
2314                         Write(i->second->fd,"ERROR :%s",s);
2315                 }
2316         }
2317 }
2318
2319 void Error(int status)
2320 {
2321         signal (SIGALRM, SIG_IGN);
2322         signal (SIGPIPE, SIG_IGN);
2323         signal (SIGTERM, SIG_IGN);
2324         signal (SIGABRT, SIG_IGN);
2325         signal (SIGSEGV, SIG_IGN);
2326         signal (SIGURG, SIG_IGN);
2327         signal (SIGKILL, SIG_IGN);
2328         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
2329         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
2330         Exit(status);
2331 }
2332
2333
2334 int main(int argc, char** argv)
2335 {
2336         Start();
2337         srand(time(NULL));
2338         log(DEBUG,"*** InspIRCd starting up!");
2339         if (!FileExists(CONFIG_FILE))
2340         {
2341                 printf("ERROR: Cannot open config file: %s\nExiting...\n",CONFIG_FILE);
2342                 log(DEFAULT,"main: no config");
2343                 printf("ERROR: Your config file is missing, this IRCd will self destruct in 10 seconds!\n");
2344                 Exit(ERROR);
2345         }
2346         if (argc > 1) {
2347                 for (int i = 1; i < argc; i++)
2348                 {
2349                         if (!strcmp(argv[i],"-nofork")) {
2350                                 nofork = true;
2351                         }
2352                         if (!strcmp(argv[i],"-wait")) {
2353                                 sleep(6);
2354                         }
2355                         if (!strcmp(argv[i],"-nolimit")) {
2356                                 unlimitcore = true;
2357                         }
2358                 }
2359         }
2360         strlcpy(MyExecutable,argv[0],MAXBUF);
2361
2362         // initialize the lowercase mapping table
2363         for (int cn = 0; cn < 256; cn++)
2364                 lowermap[cn] = cn;
2365         // lowercase the uppercase chars
2366         for (int cn = 65; cn < 91; cn++)
2367                 lowermap[cn] = tolower(cn);
2368         // now replace the specific chars for scandanavian comparison
2369         lowermap['['] = '{';
2370         lowermap[']'] = '}';
2371         lowermap['\\'] = '|';
2372
2373         if (InspIRCd(argv,argc) == ERROR)
2374         {
2375                 log(DEFAULT,"main: daemon function bailed");
2376                 printf("ERROR: could not initialise. Shutting down.\n");
2377                 Exit(ERROR);
2378         }
2379         Exit(TRUE);
2380         return 0;
2381 }
2382
2383 template<typename T> inline string ConvToStr(const T &in)
2384 {
2385         stringstream tmp;
2386         if (!(tmp << in)) return string();
2387         return tmp.str();
2388 }
2389
2390 /* re-allocates a nick in the user_hash after they change nicknames,
2391  * returns a pointer to the new user as it may have moved */
2392
2393 userrec* ReHashNick(char* Old, char* New)
2394 {
2395         //user_hash::iterator newnick;
2396         user_hash::iterator oldnick = clientlist.find(Old);
2397
2398         log(DEBUG,"ReHashNick: %s %s",Old,New);
2399
2400         if (!strcasecmp(Old,New))
2401         {
2402                 log(DEBUG,"old nick is new nick, skipping");
2403                 return oldnick->second;
2404         }
2405
2406         if (oldnick == clientlist.end()) return NULL; /* doesnt exist */
2407
2408         log(DEBUG,"ReHashNick: Found hashed nick %s",Old);
2409
2410         clientlist[New] = new userrec();
2411         clientlist[New] = oldnick->second;
2412         clientlist.erase(oldnick);
2413
2414         log(DEBUG,"ReHashNick: Nick rehashed as %s",New);
2415
2416         return clientlist[New];
2417 }
2418
2419 /* adds or updates an entry in the whowas list */
2420 void AddWhoWas(userrec* u)
2421 {
2422         user_hash::iterator iter = whowas.find(u->nick);
2423         userrec *a = new userrec();
2424         strlcpy(a->nick,u->nick,NICKMAX);
2425         strlcpy(a->ident,u->ident,64);
2426         strlcpy(a->dhost,u->dhost,256);
2427         strlcpy(a->host,u->host,256);
2428         strlcpy(a->fullname,u->fullname,128);
2429         strlcpy(a->server,u->server,256);
2430         a->signon = u->signon;
2431
2432         /* MAX_WHOWAS:   max number of /WHOWAS items
2433          * WHOWAS_STALE: number of hours before a WHOWAS item is marked as stale and
2434          *               can be replaced by a newer one
2435          */
2436
2437         if (iter == whowas.end())
2438         {
2439                 if (whowas.size() == WHOWAS_MAX)
2440                 {
2441                         for (user_hash::iterator i = whowas.begin(); i != whowas.end(); i++)
2442                         {
2443                                 // 3600 seconds in an hour ;)
2444                                 if ((i->second->signon)<(TIME-(WHOWAS_STALE*3600)))
2445                                 {
2446                                         if (i->second) delete i->second;
2447                                         i->second = a;
2448                                         log(DEBUG,"added WHOWAS entry, purged an old record");
2449                                         return;
2450                                 }
2451                         }
2452                 }
2453                 else
2454                 {
2455                         log(DEBUG,"added fresh WHOWAS entry");
2456                         whowas[a->nick] = a;
2457                 }
2458         }
2459         else
2460         {
2461                 log(DEBUG,"updated WHOWAS entry");
2462                 if (iter->second) delete iter->second;
2463                 iter->second = a;
2464         }
2465 }
2466
2467
2468 /* add a client connection to the sockets list */
2469 void AddClient(int socket, char* host, int port, bool iscached, char* ip)
2470 {
2471         string tempnick;
2472         char tn2[MAXBUF];
2473         user_hash::iterator iter;
2474
2475         tempnick = ConvToStr(socket) + "-unknown";
2476         sprintf(tn2,"%lu-unknown",(unsigned long)socket);
2477
2478         iter = clientlist.find(tempnick);
2479
2480         // fix by brain.
2481         // as these nicknames are 'RFC impossible', we can be sure nobody is going to be
2482         // using one as a registered connection. As theyre per fd, we can also safely assume
2483         // that we wont have collisions. Therefore, if the nick exists in the list, its only
2484         // used by a dead socket, erase the iterator so that the new client may reclaim it.
2485         // this was probably the cause of 'server ignores me when i hammer it with reconnects'
2486         // issue in earlier alphas/betas
2487         if (iter != clientlist.end())
2488         {
2489                 clientlist.erase(iter);
2490         }
2491
2492         /*
2493          * It is OK to access the value here this way since we know
2494          * it exists, we just created it above.
2495          *
2496          * At NO other time should you access a value in a map or a
2497          * hash_map this way.
2498          */
2499         clientlist[tempnick] = new userrec();
2500
2501         NonBlocking(socket);
2502         log(DEBUG,"AddClient: %lu %s %d %s",(unsigned long)socket,host,port,ip);
2503
2504         clientlist[tempnick]->fd = socket;
2505         strncpy(clientlist[tempnick]->nick, tn2,NICKMAX);
2506         strncpy(clientlist[tempnick]->host, host,160);
2507         strncpy(clientlist[tempnick]->dhost, host,160);
2508         strncpy(clientlist[tempnick]->server, ServerName,256);
2509         strncpy(clientlist[tempnick]->ident, "unknown",12);
2510         clientlist[tempnick]->registered = 0;
2511         clientlist[tempnick]->signon = TIME+dns_timeout;
2512         clientlist[tempnick]->lastping = 1;
2513         clientlist[tempnick]->port = port;
2514         strncpy(clientlist[tempnick]->ip,ip,32);
2515
2516         // set the registration timeout for this user
2517         unsigned long class_regtimeout = 90;
2518         int class_flood = 0;
2519         long class_threshold = 5;
2520
2521         for (ClassVector::iterator i = Classes.begin(); i != Classes.end(); i++)
2522         {
2523                 if (match(clientlist[tempnick]->host,i->host) && (i->type == CC_ALLOW))
2524                 {
2525                         class_regtimeout = (unsigned long)i->registration_timeout;
2526                         class_flood = i->flood;
2527                         clientlist[tempnick]->pingmax = i->pingtime;
2528                         class_threshold = i->threshold;
2529                         break;
2530                 }
2531         }
2532
2533         clientlist[tempnick]->nping = TIME+clientlist[tempnick]->pingmax+dns_timeout;
2534         clientlist[tempnick]->timeout = TIME+class_regtimeout;
2535         clientlist[tempnick]->flood = class_flood;
2536         clientlist[tempnick]->threshold = class_threshold;
2537
2538         for (int i = 0; i < MAXCHANS; i++)
2539         {
2540                 clientlist[tempnick]->chans[i].channel = NULL;
2541                 clientlist[tempnick]->chans[i].uc_modes = 0;
2542         }
2543
2544         if (clientlist.size() == MAXCLIENTS)
2545         {
2546                 kill_link(clientlist[tempnick],"No more connections allowed in this class");
2547                 return;
2548         }
2549
2550         // this is done as a safety check to keep the file descriptors within range of fd_ref_table.
2551         // its a pretty big but for the moment valid assumption:
2552         // file descriptors are handed out starting at 0, and are recycled as theyre freed.
2553         // therefore if there is ever an fd over 65535, 65536 clients must be connected to the
2554         // irc server at once (or the irc server otherwise initiating this many connections, files etc)
2555         // which for the time being is a physical impossibility (even the largest networks dont have more
2556         // than about 10,000 users on ONE server!)
2557         if (socket > 65535)
2558         {
2559                 kill_link(clientlist[tempnick],"Server is full");
2560                 return;
2561         }
2562
2563
2564         char* e = matches_exception(ip);
2565         if (!e)
2566         {
2567                 char* r = matches_zline(ip);
2568                 if (r)
2569                 {
2570                         char reason[MAXBUF];
2571                         snprintf(reason,MAXBUF,"Z-Lined: %s",r);
2572                         kill_link(clientlist[tempnick],reason);
2573                         return;
2574                 }
2575         }
2576         fd_ref_table[socket] = clientlist[tempnick];
2577 }
2578
2579 // this function counts all users connected, wether they are registered or NOT.
2580 int usercnt(void)
2581 {
2582         return clientlist.size();
2583 }
2584
2585 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
2586 int registered_usercount(void)
2587 {
2588         int c = 0;
2589         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2590         {
2591                 if ((i->second->fd) && (isnick(i->second->nick))) c++;
2592         }
2593         return c;
2594 }
2595
2596 int usercount_invisible(void)
2597 {
2598         int c = 0;
2599
2600         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2601         {
2602                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
2603         }
2604         return c;
2605 }
2606
2607 int usercount_opers(void)
2608 {
2609         int c = 0;
2610
2611         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2612         {
2613                 if ((i->second->fd) && (isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
2614         }
2615         return c;
2616 }
2617
2618 int usercount_unknown(void)
2619 {
2620         int c = 0;
2621
2622         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2623         {
2624                 if ((i->second->fd) && (i->second->registered != 7))
2625                         c++;
2626         }
2627         return c;
2628 }
2629
2630 long chancount(void)
2631 {
2632         return chanlist.size();
2633 }
2634
2635 long count_servs(void)
2636 {
2637         int c = 0;
2638         for (int i = 0; i < 32; i++)
2639         {
2640                 if (me[i] != NULL)
2641                 {
2642                         for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2643                         {
2644                                 if (strcasecmp(j->GetServerName().c_str(),ServerName))
2645                                 {
2646                                         c++;
2647                                 }
2648                         }
2649                 }
2650         }
2651         return c;
2652 }
2653
2654 long servercount(void)
2655 {
2656         return count_servs()+1;
2657 }
2658
2659 long local_count()
2660 {
2661         int c = 0;
2662         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2663         {
2664                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,ServerName))) c++;
2665         }
2666         return c;
2667 }
2668
2669
2670 void ShowMOTD(userrec *user)
2671 {
2672         char buf[65536];
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         snprintf(buf,65535,":%s 375 %s :- %s message of the day\r\n", ServerName, user->nick, ServerName);
2680         WholeMOTD = WholeMOTD + buf;
2681         for (int i = 0; i != MOTD.size(); i++)
2682         {
2683                 snprintf(buf,65535,":%s 372 %s :- %s\r\n", ServerName, user->nick, MOTD[i].c_str());
2684                 WholeMOTD = WholeMOTD + buf;
2685         }
2686         snprintf(buf,65535,":%s 376 %s :End of message of the day.\r\n", ServerName, user->nick);
2687         WholeMOTD = WholeMOTD + buf;
2688         // only one write operation
2689         send(user->fd,WholeMOTD.c_str(),WholeMOTD.length(),0);
2690         statsSent += WholeMOTD.length();
2691 }
2692
2693 void ShowRULES(userrec *user)
2694 {
2695         if (!RULES.size())
2696         {
2697                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
2698                 return;
2699         }
2700         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,ServerName);
2701         for (int i = 0; i != RULES.size(); i++)
2702         {
2703                                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,RULES[i].c_str());
2704         }
2705         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,ServerName);
2706 }
2707
2708 /* shows the message of the day, and any other on-logon stuff */
2709 void FullConnectUser(userrec* user)
2710 {
2711         statsConnects++;
2712         user->idle_lastmsg = TIME;
2713         log(DEBUG,"ConnectUser: %s",user->nick);
2714
2715         if ((strcmp(Passwd(user),"")) && (!user->haspassed))
2716         {
2717                 kill_link(user,"Invalid password");
2718                 return;
2719         }
2720         if (IsDenied(user))
2721         {
2722                 kill_link(user,"Unauthorised connection");
2723                 return;
2724         }
2725
2726         char match_against[MAXBUF];
2727         snprintf(match_against,MAXBUF,"%s@%s",user->ident,user->host);
2728         char* e = matches_exception(match_against);
2729         if (!e)
2730         {
2731                 char* r = matches_gline(match_against);
2732                 if (r)
2733                 {
2734                         char reason[MAXBUF];
2735                         snprintf(reason,MAXBUF,"G-Lined: %s",r);
2736                         kill_link_silent(user,reason);
2737                         return;
2738                 }
2739                 r = matches_kline(user->host);
2740                 if (r)
2741                 {
2742                         char reason[MAXBUF];
2743                         snprintf(reason,MAXBUF,"K-Lined: %s",r);
2744                         kill_link_silent(user,reason);
2745                         return;
2746                 }
2747         }
2748
2749         // fix by brain: move this below the xline checks to prevent spurious quits going onto the net that dont belong
2750         user->registered = 7;
2751
2752         WriteServ(user->fd,"NOTICE Auth :Welcome to \002%s\002!",Network);
2753         WriteServ(user->fd,"001 %s :Welcome to the %s IRC Network %s!%s@%s",user->nick,Network,user->nick,user->ident,user->host);
2754         WriteServ(user->fd,"002 %s :Your host is %s, running version %s",user->nick,ServerName,VERSION);
2755         WriteServ(user->fd,"003 %s :This server was created %s %s",user->nick,__TIME__,__DATE__);
2756         WriteServ(user->fd,"004 %s %s %s iowghraAsORVSxNCWqBzvdHtGI lvhopsmntikrRcaqOALQbSeKVfHGCuzN",user->nick,ServerName,VERSION);
2757         // the neatest way to construct the initial 005 numeric, considering the number of configure constants to go in it...
2758         std::stringstream v;
2759         v << "MESHED WALLCHOPS MODES=13 CHANTYPES=# PREFIX=(ohv)@%+ MAP SAFELIST MAXCHANNELS=" << MAXCHANS;
2760         v << " MAXBANS=60 NICKLEN=" << NICKMAX;
2761         v << " TOPICLEN=307 KICKLEN=307 MAXTARGETS=20 AWAYLEN=307 CHANMODES=ohvb,k,l,psmnti NETWORK=";
2762         v << Network;
2763         std::string data005 = v.str();
2764         FOREACH_MOD On005Numeric(data005);
2765         // anfl @ #ratbox, efnet reminded me that according to the RFC this cant contain more than 13 tokens per line...
2766         // so i'd better split it :)
2767         std::stringstream out(data005);
2768         std::string token = "";
2769         std::string line5 = "";
2770         int token_counter = 0;
2771         while (!out.eof())
2772         {
2773                 out >> token;
2774                 line5 = line5 + token + " ";
2775                 token_counter++;
2776                 if ((token_counter >= 13) || (out.eof() == true))
2777                 {
2778                         WriteServ(user->fd,"005 %s %s:are supported by this server",user->nick,line5.c_str());
2779                         line5 = "";
2780                         token_counter = 0;
2781                 }
2782         }
2783         ShowMOTD(user);
2784
2785         char buffer[MAXBUF];
2786         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);
2787         NetSendToAll(buffer);
2788
2789         // fix by brain: these should be AFTER the N token, so other servers know what the HELL we're on about... :)
2790         FOREACH_MOD OnUserConnect(user);
2791         WriteOpers("*** Client connecting on port %lu: %s!%s@%s [%s]",(unsigned long)user->port,user->nick,user->ident,user->host,user->ip);
2792 }
2793
2794
2795 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
2796 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
2797 // registration timeout maximum seconds)
2798 bool AllModulesReportReady(userrec* user)
2799 {
2800         for (int i = 0; i <= MODCOUNT; i++)
2801         {
2802                 int res = modules[i]->OnCheckReady(user);
2803                         if (!res)
2804                                 return false;
2805         }
2806         return true;
2807 }
2808
2809 /* shows the message of the day, and any other on-logon stuff */
2810 void ConnectUser(userrec *user)
2811 {
2812         // dns is already done, things are fast. no need to wait for dns to complete just pass them straight on
2813         if ((user->dns_done) && (user->registered >= 3) && (AllModulesReportReady(user)))
2814         {
2815                 FullConnectUser(user);
2816         }
2817 }
2818
2819 std::string GetVersionString()
2820 {
2821         char Revision[] = "$Revision$";
2822         char versiondata[MAXBUF];
2823         char *s1 = Revision;
2824         char *savept;
2825         char *v2 = strtok_r(s1," ",&savept);
2826         s1 = savept;
2827         v2 = strtok_r(s1," ",&savept);
2828         s1 = savept;
2829         snprintf(versiondata,MAXBUF,"%s Rev. %s %s :%s (O=%lu)",VERSION,v2,ServerName,SYSTEM,(unsigned long)OPTIMISATION);
2830         return versiondata;
2831 }
2832
2833 void handle_version(char **parameters, int pcnt, userrec *user)
2834 {
2835         if (!pcnt)
2836         {
2837                 WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2838         }
2839         else
2840         {
2841                 if (!strcmp(parameters[0],"*"))
2842                 {
2843                         for (int j = 0; j < 32; j++)
2844                         {
2845                                 if (me[j] != NULL)
2846                                 {
2847                                         for (int x = 0; x < me[j]->connectors.size(); x++)
2848                                         {
2849                                                 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());
2850                                         }
2851                                 }
2852                         }
2853                         return;
2854                 }
2855                 if (match(ServerName,parameters[0]))
2856                 {
2857                         WriteServ(user->fd,"351 %s :%s",user->nick,GetVersionString().c_str());
2858                         return;
2859                 }
2860                 bool displayed = false, found = false;
2861                 for (int j = 0; j < 32; j++)
2862                 {
2863                         if (me[j] != NULL)
2864                         {
2865                                 for (int x = 0; x < me[j]->connectors.size(); x++)
2866                                 {
2867                                         if (match(me[j]->connectors[x].GetServerName().c_str(),parameters[0]))
2868                                         {
2869                                                 found = true;
2870                                                 if ((me[j]->connectors[x].GetVersionString() != "") && (!displayed))
2871                                                 {
2872                                                         displayed = true;
2873                                                         WriteServ(user->fd,"351 %s :%s",user->nick,me[j]->connectors[x].GetVersionString().c_str());
2874                                                 }
2875                                         }
2876                                 }
2877                         }
2878                 }
2879                 if ((!displayed) && (found))
2880                 {
2881                         WriteServ(user->fd,"402 %s %s :Server %s has no version information",user->nick,parameters[0],parameters[0]);
2882                         return;
2883                 }
2884                 if (!found)
2885                 {
2886                         WriteServ(user->fd,"402 %s %s :No such server",user->nick,parameters[0]);
2887                 }
2888         }
2889         return;
2890 }
2891
2892
2893 // calls a handler function for a command
2894
2895 void call_handler(const char* commandname,char **parameters, int pcnt, userrec *user)
2896 {
2897                 for (int i = 0; i < cmdlist.size(); i++)
2898                 {
2899                         if (!strcasecmp(cmdlist[i].command,commandname))
2900                         {
2901                                 if (cmdlist[i].handler_function)
2902                                 {
2903                                         if (pcnt>=cmdlist[i].min_params)
2904                                         {
2905                                                 if (strchr(user->modes,cmdlist[i].flags_needed))
2906                                                 {
2907                                                         cmdlist[i].handler_function(parameters,pcnt,user);
2908                                                 }
2909                                         }
2910                                 }
2911                         }
2912                 }
2913 }
2914
2915 void DoSplitEveryone()
2916 {
2917         bool go_again = true;
2918         while (go_again)
2919         {
2920                 go_again = false;
2921                 for (int i = 0; i < 32; i++)
2922                 {
2923                         if (me[i] != NULL)
2924                         {
2925                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
2926                                 {
2927                                         if (strcasecmp(j->GetServerName().c_str(),ServerName))
2928                                         {
2929                                                 j->routes.clear();
2930                                                 j->CloseConnection();
2931                                                 me[i]->connectors.erase(j);
2932                                                 go_again = true;
2933                                                 break;
2934                                         }
2935                                 }
2936                         }
2937                 }
2938         }
2939         log(DEBUG,"Removed server. Will remove clients...");
2940         // iterate through the userlist and remove all users on this server.
2941         // because we're dealing with a mesh, we dont have to deal with anything
2942         // "down-route" from this server (nice huh)
2943         go_again = true;
2944         char reason[MAXBUF];
2945         while (go_again)
2946         {
2947                 go_again = false;
2948                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
2949                 {
2950                         if (strcasecmp(u->second->server,ServerName))
2951                         {
2952                                 snprintf(reason,MAXBUF,"%s %s",ServerName,u->second->server);
2953                                 kill_link(u->second,reason);
2954                                 go_again = true;
2955                                 break;
2956                         }
2957                 }
2958         }
2959 }
2960
2961
2962
2963 char islast(const char* s)
2964 {
2965         char c = '`';
2966         for (int j = 0; j < 32; j++)
2967         {
2968                 if (me[j] != NULL)
2969                 {
2970                         for (int k = 0; k < me[j]->connectors.size(); k++)
2971                         {
2972                                 if (strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2973                                 {
2974                                         c = '|';
2975                                 }
2976                                 if (!strcasecmp(me[j]->connectors[k].GetServerName().c_str(),s))
2977                                 {
2978                                         c = '`';
2979                                 }
2980                         }
2981                 }
2982         }
2983         return c;
2984 }
2985
2986 long map_count(const char* s)
2987 {
2988         int c = 0;
2989         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
2990         {
2991                 if ((i->second->fd) && (isnick(i->second->nick)) && (!strcasecmp(i->second->server,s))) c++;
2992         }
2993         return c;
2994 }
2995
2996
2997 void force_nickchange(userrec* user,const char* newnick)
2998 {
2999         char nick[MAXBUF];
3000         int MOD_RESULT = 0;
3001
3002         strcpy(nick,"");
3003
3004         FOREACH_RESULT(OnUserPreNick(user,newnick));
3005         if (MOD_RESULT) {
3006                 statsCollisions++;
3007                 kill_link(user,"Nickname collision");
3008                 return;
3009         }
3010         if (matches_qline(newnick))
3011         {
3012                 statsCollisions++;
3013                 kill_link(user,"Nickname collision");
3014                 return;
3015         }
3016
3017         if (user)
3018         {
3019                 if (newnick)
3020                 {
3021                         strncpy(nick,newnick,MAXBUF);
3022                 }
3023                 if (user->registered == 7)
3024                 {
3025                         char* pars[1];
3026                         pars[0] = nick;
3027                         handle_nick(pars,1,user);
3028                 }
3029         }
3030 }
3031
3032
3033 int process_parameters(char **command_p,char *parameters)
3034 {
3035         int j = 0;
3036         int q = strlen(parameters);
3037         if (!q)
3038         {
3039                 /* no parameters, command_p invalid! */
3040                 return 0;
3041         }
3042         if (parameters[0] == ':')
3043         {
3044                 command_p[0] = parameters+1;
3045                 return 1;
3046         }
3047         if (q)
3048         {
3049                 if ((strchr(parameters,' ')==NULL) || (parameters[0] == ':'))
3050                 {
3051                         /* only one parameter */
3052                         command_p[0] = parameters;
3053                         if (parameters[0] == ':')
3054                         {
3055                                 if (strchr(parameters,' ') != NULL)
3056                                 {
3057                                         command_p[0]++;
3058                                 }
3059                         }
3060                         return 1;
3061                 }
3062         }
3063         command_p[j++] = parameters;
3064         for (int i = 0; i <= q; i++)
3065         {
3066                 if (parameters[i] == ' ')
3067                 {
3068                         command_p[j++] = parameters+i+1;
3069                         parameters[i] = '\0';
3070                         if (command_p[j-1][0] == ':')
3071                         {
3072                                 *command_p[j-1]++; /* remove dodgy ":" */
3073                                 break;
3074                                 /* parameter like this marks end of the sequence */
3075                         }
3076                 }
3077         }
3078         return j; /* returns total number of items in the list */
3079 }
3080
3081 void process_command(userrec *user, char* cmd)
3082 {
3083         char *parameters;
3084         char *command;
3085         char *command_p[127];
3086         char p[MAXBUF], temp[MAXBUF];
3087         int j, items, cmd_found;
3088
3089         for (int i = 0; i < 127; i++)
3090                 command_p[i] = NULL;
3091
3092         if (!user)
3093         {
3094                 return;
3095         }
3096         if (!cmd)
3097         {
3098                 return;
3099         }
3100         if (!cmd[0])
3101         {
3102                 return;
3103         }
3104
3105         int total_params = 0;
3106         if (strlen(cmd)>2)
3107         {
3108                 for (int q = 0; q < strlen(cmd)-1; q++)
3109                 {
3110                         if ((cmd[q] == ' ') && (cmd[q+1] == ':'))
3111                         {
3112                                 total_params++;
3113                                 // found a 'trailing', we dont count them after this.
3114                                 break;
3115                         }
3116                         if (cmd[q] == ' ')
3117                                 total_params++;
3118                 }
3119         }
3120
3121         // another phidjit bug...
3122         if (total_params > 126)
3123         {
3124                 *(strchr(cmd,' ')) = '\0';
3125                 WriteServ(user->fd,"421 %s %s :Too many parameters given",user->nick,cmd);
3126                 return;
3127         }
3128
3129         strlcpy(temp,cmd,MAXBUF);
3130
3131         std::string tmp = cmd;
3132         for (int i = 0; i <= MODCOUNT; i++)
3133         {
3134                 std::string oldtmp = tmp;
3135                 modules[i]->OnServerRaw(tmp,true,user);
3136                 if (oldtmp != tmp)
3137                 {
3138                         log(DEBUG,"A Module changed the input string!");
3139                         log(DEBUG,"New string: %s",tmp.c_str());
3140                         log(DEBUG,"Old string: %s",oldtmp.c_str());
3141                         break;
3142                 }
3143         }
3144         strlcpy(cmd,tmp.c_str(),MAXBUF);
3145         strlcpy(temp,cmd,MAXBUF);
3146
3147         if (!strchr(cmd,' '))
3148         {
3149                 /* no parameters, lets skip the formalities and not chop up
3150                  * the string */
3151                 log(DEBUG,"About to preprocess command with no params");
3152                 items = 0;
3153                 command_p[0] = NULL;
3154                 parameters = NULL;
3155                 for (int i = 0; i <= strlen(cmd); i++)
3156                 {
3157                         cmd[i] = toupper(cmd[i]);
3158                 }
3159                 command = cmd;
3160         }
3161         else
3162         {
3163                 strcpy(cmd,"");
3164                 j = 0;
3165                 /* strip out extraneous linefeeds through mirc's crappy pasting (thanks Craig) */
3166                 for (int i = 0; i < strlen(temp); i++)
3167                 {
3168                         if ((temp[i] != 10) && (temp[i] != 13) && (temp[i] != 0) && (temp[i] != 7))
3169                         {
3170                                 cmd[j++] = temp[i];
3171                                 cmd[j] = 0;
3172                         }
3173                 }
3174                 /* split the full string into a command plus parameters */
3175                 parameters = p;
3176                 strcpy(p," ");
3177                 command = cmd;
3178                 if (strchr(cmd,' '))
3179                 {
3180                         for (int i = 0; i <= strlen(cmd); i++)
3181                         {
3182                                 /* capitalise the command ONLY, leave params intact */
3183                                 cmd[i] = toupper(cmd[i]);
3184                                 /* are we nearly there yet?! :P */
3185                                 if (cmd[i] == ' ')
3186                                 {
3187                                         command = cmd;
3188                                         parameters = cmd+i+1;
3189                                         cmd[i] = '\0';
3190                                         break;
3191                                 }
3192                         }
3193                 }
3194                 else
3195                 {
3196                         for (int i = 0; i <= strlen(cmd); i++)
3197                         {
3198                                 cmd[i] = toupper(cmd[i]);
3199                         }
3200                 }
3201
3202         }
3203         cmd_found = 0;
3204
3205         if (strlen(command)>MAXCOMMAND)
3206         {
3207                 WriteServ(user->fd,"421 %s %s :Command too long",user->nick,command);
3208                 return;
3209         }
3210
3211         for (int x = 0; x < strlen(command); x++)
3212         {
3213                 if (((command[x] < 'A') || (command[x] > 'Z')) && (command[x] != '.'))
3214                 {
3215                         if (((command[x] < '0') || (command[x]> '9')) && (command[x] != '-'))
3216                         {
3217                                 if (strchr("@!\"$%^&*(){}[]_=+;:'#~,<>/?\\|`",command[x]))
3218                                 {
3219                                         statsUnknown++;
3220                                         WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3221                                         return;
3222                                 }
3223                         }
3224                 }
3225         }
3226
3227         for (int i = 0; i != cmdlist.size(); i++)
3228         {
3229                 if (cmdlist[i].command[0])
3230                 {
3231                         if (strlen(command)>=(strlen(cmdlist[i].command))) if (!strncmp(command, cmdlist[i].command,MAXCOMMAND))
3232                         {
3233                                 if (parameters)
3234                                 {
3235                                         if (parameters[0])
3236                                         {
3237                                                 items = process_parameters(command_p,parameters);
3238                                         }
3239                                         else
3240                                         {
3241                                                 items = 0;
3242                                                 command_p[0] = NULL;
3243                                         }
3244                                 }
3245                                 else
3246                                 {
3247                                         items = 0;
3248                                         command_p[0] = NULL;
3249                                 }
3250
3251                                 if (user)
3252                                 {
3253                                         /* activity resets the ping pending timer */
3254                                         user->nping = TIME + user->pingmax;
3255                                         if ((items) < cmdlist[i].min_params)
3256                                         {
3257                                                 log(DEBUG,"process_command: not enough parameters: %s %s",user->nick,command);
3258                                                 WriteServ(user->fd,"461 %s %s :Not enough parameters",user->nick,command);
3259                                                 return;
3260                                         }
3261                                         if ((!strchr(user->modes,cmdlist[i].flags_needed)) && (cmdlist[i].flags_needed))
3262                                         {
3263                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3264                                                 WriteServ(user->fd,"481 %s :Permission Denied- You do not have the required operator privilages",user->nick);
3265                                                 cmd_found = 1;
3266                                                 return;
3267                                         }
3268                                         if ((cmdlist[i].flags_needed) && (!user->HasPermission(command)))
3269                                         {
3270                                                 log(DEBUG,"process_command: permission denied: %s %s",user->nick,command);
3271                                                 WriteServ(user->fd,"481 %s :Permission Denied- Oper type %s does not have access to command %s",user->nick,user->oper,command);
3272                                                 cmd_found = 1;
3273                                                 return;
3274                                         }
3275                                         /* if the command isnt USER, PASS, or NICK, and nick is empty,
3276                                          * deny command! */
3277                                         if ((strncmp(command,"USER",4)) && (strncmp(command,"NICK",4)) && (strncmp(command,"PASS",4)))
3278                                         {
3279                                                 if ((!isnick(user->nick)) || (user->registered != 7))
3280                                                 {
3281                                                         log(DEBUG,"process_command: not registered: %s %s",user->nick,command);
3282                                                         WriteServ(user->fd,"451 %s :You have not registered",command);
3283                                                         return;
3284                                                 }
3285                                         }
3286                                         if ((user->registered == 7) && (!strchr(user->modes,'o')))
3287                                         {
3288                                                 char* mycmd;
3289                                                 char* savept2;
3290                                                 mycmd = strtok_r(DisabledCommands," ",&savept2);
3291                                                 while (mycmd)
3292                                                 {
3293                                                         if (!strcasecmp(mycmd,command))
3294                                                         {
3295                                                                 // command is disabled!
3296                                                                 WriteServ(user->fd,"421 %s %s :This command has been disabled.",user->nick,command);
3297                                                                 return;
3298                                                         }
3299                                                         mycmd = strtok_r(NULL," ",&savept2);
3300                                                 }
3301
3302
3303                                         }
3304                                         if ((user->registered == 7) || (!strncmp(command,"USER",4)) || (!strncmp(command,"NICK",4)) || (!strncmp(command,"PASS",4)))
3305                                         {
3306                                                 if (cmdlist[i].handler_function)
3307                                                 {
3308
3309                                                         /* ikky /stats counters */
3310                                                         if (temp)
3311                                                         {
3312                                                                 cmdlist[i].use_count++;
3313                                                                 cmdlist[i].total_bytes+=strlen(temp);
3314                                                         }
3315
3316                                                         int MOD_RESULT = 0;
3317                                                         FOREACH_RESULT(OnPreCommand(command,command_p,items,user));
3318                                                         if (MOD_RESULT == 1) {
3319                                                                 return;
3320                                                         }
3321
3322                                                         /* WARNING: nothing may come after the
3323                                                          * command handler call, as the handler
3324                                                          * may free the user structure! */
3325
3326                                                         cmdlist[i].handler_function(command_p,items,user);
3327                                                 }
3328                                                 return;
3329                                         }
3330                                         else
3331                                         {
3332                                                 WriteServ(user->fd,"451 %s :You have not registered",command);
3333                                                 return;
3334                                         }
3335                                 }
3336                                 cmd_found = 1;
3337                         }
3338                 }
3339         }
3340         if ((!cmd_found) && (user))
3341         {
3342                 statsUnknown++;
3343                 WriteServ(user->fd,"421 %s %s :Unknown command",user->nick,command);
3344         }
3345 }
3346
3347
3348 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
3349 {
3350         command_t comm;
3351         /* create the command and push it onto the table */
3352         strlcpy(comm.command,cmd,MAXBUF);
3353         strlcpy(comm.source,source,MAXBUF);
3354         comm.handler_function = f;
3355         comm.flags_needed = flags;
3356         comm.min_params = minparams;
3357         comm.use_count = 0;
3358         comm.total_bytes = 0;
3359         cmdlist.push_back(comm);
3360         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
3361 }
3362
3363 bool removecommands(const char* source)
3364 {
3365         bool go_again = true;
3366         while (go_again)
3367         {
3368                 go_again = false;
3369                 for (std::deque<command_t>::iterator i = cmdlist.begin(); i != cmdlist.end(); i++)
3370                 {
3371                         if (!strcmp(i->source,source))
3372                         {
3373                                 log(DEBUG,"removecommands(%s) Removing dependent command: %s",i->source,i->command);
3374                                 cmdlist.erase(i);
3375                                 go_again = true;
3376                                 break;
3377                         }
3378                 }
3379         }
3380         return true;
3381 }
3382
3383 void SetupCommandTable(void)
3384 {
3385         createcommand("USER",handle_user,0,4,"<core>");
3386         createcommand("NICK",handle_nick,0,1,"<core>");
3387         createcommand("QUIT",handle_quit,0,0,"<core>");
3388         createcommand("VERSION",handle_version,0,0,"<core>");
3389         createcommand("PING",handle_ping,0,1,"<core>");
3390         createcommand("PONG",handle_pong,0,1,"<core>");
3391         createcommand("ADMIN",handle_admin,0,0,"<core>");
3392         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
3393         createcommand("INFO",handle_info,0,0,"<core>");
3394         createcommand("TIME",handle_time,0,0,"<core>");
3395         createcommand("WHOIS",handle_whois,0,1,"<core>");
3396         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
3397         createcommand("NOTICE",handle_notice,0,2,"<core>");
3398         createcommand("JOIN",handle_join,0,1,"<core>");
3399         createcommand("NAMES",handle_names,0,0,"<core>");
3400         createcommand("PART",handle_part,0,1,"<core>");
3401         createcommand("KICK",handle_kick,0,2,"<core>");
3402         createcommand("MODE",handle_mode,0,1,"<core>");
3403         createcommand("TOPIC",handle_topic,0,1,"<core>");
3404         createcommand("WHO",handle_who,0,1,"<core>");
3405         createcommand("MOTD",handle_motd,0,0,"<core>");
3406         createcommand("RULES",handle_rules,0,0,"<core>");
3407         createcommand("OPER",handle_oper,0,2,"<core>");
3408         createcommand("LIST",handle_list,0,0,"<core>");
3409         createcommand("DIE",handle_die,'o',1,"<core>");
3410         createcommand("RESTART",handle_restart,'o',1,"<core>");
3411         createcommand("KILL",handle_kill,'o',2,"<core>");
3412         createcommand("REHASH",handle_rehash,'o',0,"<core>");
3413         createcommand("LUSERS",handle_lusers,0,0,"<core>");
3414         createcommand("STATS",handle_stats,0,1,"<core>");
3415         createcommand("USERHOST",handle_userhost,0,1,"<core>");
3416         createcommand("AWAY",handle_away,0,0,"<core>");
3417         createcommand("ISON",handle_ison,0,0,"<core>");
3418         createcommand("SUMMON",handle_summon,0,0,"<core>");
3419         createcommand("USERS",handle_users,0,0,"<core>");
3420         createcommand("INVITE",handle_invite,0,2,"<core>");
3421         createcommand("PASS",handle_pass,0,1,"<core>");
3422         createcommand("TRACE",handle_trace,'o',0,"<core>");
3423         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
3424         createcommand("CONNECT",handle_connect,'o',1,"<core>");
3425         createcommand("SQUIT",handle_squit,'o',0,"<core>");
3426         createcommand("MODULES",handle_modules,0,0,"<core>");
3427         createcommand("LINKS",handle_links,0,0,"<core>");
3428         createcommand("MAP",handle_map,0,0,"<core>");
3429         createcommand("KLINE",handle_kline,'o',1,"<core>");
3430         createcommand("GLINE",handle_gline,'o',1,"<core>");
3431         createcommand("ZLINE",handle_zline,'o',1,"<core>");
3432         createcommand("QLINE",handle_qline,'o',1,"<core>");
3433         createcommand("ELINE",handle_eline,'o',1,"<core>");
3434         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
3435         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
3436         createcommand("SERVER",handle_server,0,0,"<core>");
3437 }
3438
3439 void process_buffer(const char* cmdbuf,userrec *user)
3440 {
3441         if (!user)
3442         {
3443                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3444                 return;
3445         }
3446         char cmd[MAXBUF];
3447         if (!cmdbuf)
3448         {
3449                 log(DEFAULT,"*** BUG *** process_buffer was given an invalid parameter");
3450                 return;
3451         }
3452         if (!cmdbuf[0])
3453         {
3454                 return;
3455         }
3456         while (*cmdbuf == ' ') cmdbuf++; // strip leading spaces
3457
3458         strlcpy(cmd,cmdbuf,MAXBUF);
3459         if (!cmd[0])
3460         {
3461                 return;
3462         }
3463         int sl = strlen(cmd)-1;
3464         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3465         {
3466                 cmd[sl] = '\0';
3467         }
3468         sl = strlen(cmd)-1;
3469         if ((cmd[sl] == 13) || (cmd[sl] == 10))
3470         {
3471                 cmd[sl] = '\0';
3472         }
3473         sl = strlen(cmd)-1;
3474         while (cmd[sl] == ' ') // strip trailing spaces
3475         {
3476                 cmd[sl] = '\0';
3477                 sl = strlen(cmd)-1;
3478         }
3479
3480         if (!cmd[0])
3481         {
3482                 return;
3483         }
3484         log(DEBUG,"CMDIN: %s %s",user->nick,cmd);
3485         tidystring(cmd);
3486         if ((user) && (cmd))
3487         {
3488                 process_command(user,cmd);
3489         }
3490 }
3491
3492 void DoSync(serverrec* serv, char* tcp_host)
3493 {
3494         char data[MAXBUF];
3495         log(DEBUG,"Sending sync");
3496         // send start of sync marker: Y <timestamp>
3497         // at this point the ircd receiving it starts broadcasting this netburst to all ircds
3498         // except the ones its receiving it from.
3499         snprintf(data,MAXBUF,"Y %lu",(unsigned long)TIME);
3500         serv->SendPacket(data,tcp_host);
3501         // send users and channels
3502
3503         NetSendMyRoutingTable();
3504
3505         // send all routing table and uline voodoo. The ordering of these commands is IMPORTANT!
3506         for (int j = 0; j < 32; j++)
3507         {
3508                 if (me[j] != NULL)
3509                 {
3510                         for (int k = 0; k < me[j]->connectors.size(); k++)
3511                         {
3512                                 if (is_uline(me[j]->connectors[k].GetServerName().c_str()))
3513                                 {
3514                                         snprintf(data,MAXBUF,"H %s",me[j]->connectors[k].GetServerName().c_str());
3515                                         serv->SendPacket(data,tcp_host);
3516                                 }
3517                         }
3518                 }
3519         }
3520
3521         // send our version for the remote side to cache
3522         snprintf(data,MAXBUF,"v %s %s",ServerName,GetVersionString().c_str());
3523         serv->SendPacket(data,tcp_host);
3524
3525         // sync the users and channels, give the modules a look-in.
3526         for (user_hash::iterator u = clientlist.begin(); u != clientlist.end(); u++)
3527         {
3528                 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);
3529                 serv->SendPacket(data,tcp_host);
3530                 if (strchr(u->second->modes,'o'))
3531                 {
3532                         snprintf(data,MAXBUF,"| %s %s",u->second->nick,u->second->oper);
3533                         serv->SendPacket(data,tcp_host);
3534                 }
3535                 for (int i = 0; i <= MODCOUNT; i++)
3536                 {
3537                         string_list l = modules[i]->OnUserSync(u->second);
3538                         for (int j = 0; j < l.size(); j++)
3539                         {
3540                                 strlcpy(data,l[j].c_str(),MAXBUF);
3541                                 serv->SendPacket(data,tcp_host);
3542                         }
3543                 }
3544                 char* chl = chlist(u->second,u->second);
3545                 if (strcmp(chl,""))
3546                 {
3547                         snprintf(data,MAXBUF,"J %s %s",u->second->nick,chl);
3548                         serv->SendPacket(data,tcp_host);
3549                 }
3550         }
3551         // send channel modes, topics etc...
3552         for (chan_hash::iterator c = chanlist.begin(); c != chanlist.end(); c++)
3553         {
3554                 snprintf(data,MAXBUF,"M %s +%s",c->second->name,chanmodes(c->second));
3555                 serv->SendPacket(data,tcp_host);
3556                 for (int i = 0; i <= MODCOUNT; i++)
3557                 {
3558                         string_list l = modules[i]->OnChannelSync(c->second);
3559                         for (int j = 0; j < l.size(); j++)
3560                         {
3561                                 strlcpy(data,l[j].c_str(),MAXBUF);
3562                                 serv->SendPacket(data,tcp_host);
3563                         }
3564                 }
3565                 if (c->second->topic[0])
3566                 {
3567                         snprintf(data,MAXBUF,"T %lu %s %s :%s",(unsigned long)c->second->topicset,c->second->setby,c->second->name,c->second->topic);
3568                         serv->SendPacket(data,tcp_host);
3569                 }
3570                 // send current banlist
3571
3572                 for (BanList::iterator b = c->second->bans.begin(); b != c->second->bans.end(); b++)
3573                 {
3574                         snprintf(data,MAXBUF,"M %s +b %s",c->second->name,b->data);
3575                         serv->SendPacket(data,tcp_host);
3576                 }
3577         }
3578         // sync global zlines, glines, etc
3579         sync_xlines(serv,tcp_host);
3580
3581         snprintf(data,MAXBUF,"F %lu",(unsigned long)TIME);
3582         serv->SendPacket(data,tcp_host);
3583         log(DEBUG,"Sent sync");
3584         // ircd sends its serverlist after the end of sync here
3585 }
3586
3587
3588 void NetSendMyRoutingTable()
3589 {
3590         // send out a line saying what is reachable to us.
3591         // E.g. if A is linked to B C and D, send out:
3592         // $ A B C D
3593         // if its only linked to B and D send out:
3594         // $ A B D
3595         // if it has no links, dont even send out the line at all.
3596         char buffer[MAXBUF];
3597         snprintf(buffer,MAXBUF,"$ %s",ServerName);
3598         bool sendit = false;
3599         for (int i = 0; i < 32; i++)
3600         {
3601                 if (me[i] != NULL)
3602                 {
3603                         for (int j = 0; j < me[i]->connectors.size(); j++)
3604                         {
3605                                 if ((me[i]->connectors[j].GetState() != STATE_DISCONNECTED) || (is_uline(me[i]->connectors[j].GetServerName().c_str())))
3606                                 {
3607                                         strlcat(buffer," ",MAXBUF);
3608                                         strlcat(buffer,me[i]->connectors[j].GetServerName().c_str(),MAXBUF);
3609                                         sendit = true;
3610                                 }
3611                         }
3612                 }
3613         }
3614         if (sendit)
3615                 NetSendToAll(buffer);
3616 }
3617
3618
3619 void DoSplit(const char* params)
3620 {
3621         bool go_again = true;
3622         while (go_again)
3623         {
3624                 go_again = false;
3625                 for (int i = 0; i < 32; i++)
3626                 {
3627                         if (me[i] != NULL)
3628                         {
3629                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3630                                 {
3631                                         if (!strcasecmp(j->GetServerName().c_str(),params))
3632                                         {
3633                                                 j->routes.clear();
3634                                                 j->CloseConnection();
3635                                                 me[i]->connectors.erase(j);
3636                                                 go_again = true;
3637                                                 break;
3638                                         }
3639                                 }
3640                         }
3641                 }
3642         }
3643         log(DEBUG,"Removed server. Will remove clients...");
3644         // iterate through the userlist and remove all users on this server.
3645         // because we're dealing with a mesh, we dont have to deal with anything
3646         // "down-route" from this server (nice huh)
3647         go_again = true;
3648         char reason[MAXBUF];
3649         snprintf(reason,MAXBUF,"%s %s",ServerName,params);
3650         while (go_again)
3651         {
3652                 go_again = false;
3653                 for (user_hash::const_iterator u = clientlist.begin(); u != clientlist.end(); u++)
3654                 {
3655                         if (!strcasecmp(u->second->server,params))
3656                         {
3657                                 kill_link(u->second,reason);
3658                                 go_again = true;
3659                                 break;
3660                         }
3661                 }
3662         }
3663 }
3664
3665 // removes a server. Will NOT remove its users!
3666
3667 void RemoveServer(const char* name)
3668 {
3669         bool go_again = true;
3670         while (go_again)
3671         {
3672                 go_again = false;
3673                 for (int i = 0; i < 32; i++)
3674                 {
3675                         if (me[i] != NULL)
3676                         {
3677                                 for (vector<ircd_connector>::iterator j = me[i]->connectors.begin(); j != me[i]->connectors.end(); j++)
3678                                 {
3679                                         if (!strcasecmp(j->GetServerName().c_str(),name))
3680                                         {
3681                                                 j->routes.clear();
3682                                                 j->CloseConnection();
3683                                                 me[i]->connectors.erase(j);
3684                                                 go_again = true;
3685                                                 break;
3686                                         }
3687                                 }
3688                         }
3689                 }
3690         }
3691 }
3692
3693
3694 char MODERR[MAXBUF];
3695
3696 char* ModuleError()
3697 {
3698         return MODERR;
3699 }
3700
3701 void erase_factory(int j)
3702 {
3703         int v = 0;
3704         for (std::vector<ircd_module*>::iterator t = factory.begin(); t != factory.end(); t++)
3705         {
3706                 if (v == j)
3707                 {
3708                         factory.erase(t);
3709                         factory.push_back(NULL);
3710                         return;
3711                 }
3712                 v++;
3713         }
3714 }
3715
3716 void erase_module(int j)
3717 {
3718         int v1 = 0;
3719         for (std::vector<Module*>::iterator m = modules.begin(); m!= modules.end(); m++)
3720         {
3721                 if (v1 == j)
3722                 {
3723                         delete *m;
3724                         modules.erase(m);
3725                         modules.push_back(NULL);
3726                         break;
3727                 }
3728                 v1++;
3729         }
3730         int v2 = 0;
3731         for (std::vector<std::string>::iterator v = module_names.begin(); v != module_names.end(); v++)
3732         {
3733                 if (v2 == j)
3734                 {
3735                        module_names.erase(v);
3736                        break;
3737                 }
3738                 v2++;
3739         }
3740
3741 }
3742
3743 bool UnloadModule(const char* filename)
3744 {
3745         std::string filename_str = filename;
3746         for (int j = 0; j != module_names.size(); j++)
3747         {
3748                 if (module_names[j] == filename_str)
3749                 {
3750                         if (modules[j]->GetVersion().Flags & VF_STATIC)
3751                         {
3752                                 log(DEFAULT,"Failed to unload STATIC module %s",filename);
3753                                 snprintf(MODERR,MAXBUF,"Module not unloadable (marked static)");
3754                                 return false;
3755                         }
3756                         // found the module
3757                         log(DEBUG,"Deleting module...");
3758                         erase_module(j);
3759                         log(DEBUG,"Erasing module entry...");
3760                         erase_factory(j);
3761                         log(DEBUG,"Removing dependent commands...");
3762                         removecommands(filename);
3763                         log(DEFAULT,"Module %s unloaded",filename);
3764                         MODCOUNT--;
3765                         return true;
3766                 }
3767         }
3768         log(DEFAULT,"Module %s is not loaded, cannot unload it!",filename);
3769         snprintf(MODERR,MAXBUF,"Module not loaded");
3770         return false;
3771 }
3772
3773 bool DirValid(char* dirandfile)
3774 {
3775         char work[MAXBUF];
3776         strlcpy(work,dirandfile,MAXBUF);
3777         int p = strlen(work);
3778         // we just want the dir
3779         while (strlen(work))
3780         {
3781                 if (work[p] == '/')
3782                 {
3783                         work[p] = '\0';
3784                         break;
3785                 }
3786                 work[p--] = '\0';
3787         }
3788         char buffer[MAXBUF], otherdir[MAXBUF];
3789         // Get the current working directory
3790         if( getcwd( buffer, MAXBUF ) == NULL )
3791                 return false;
3792         chdir(work);
3793         if( getcwd( otherdir, MAXBUF ) == NULL )
3794                 return false;
3795         chdir(buffer);
3796         if (strlen(otherdir) >= strlen(work))
3797         {
3798                 otherdir[strlen(work)] = '\0';
3799                 if (!strcmp(otherdir,work))
3800                 {
3801                         return true;
3802                 }
3803                 return false;
3804         }
3805         else return false;
3806 }
3807
3808 std::string GetFullProgDir(char** argv, int argc)
3809 {
3810         char work[MAXBUF];
3811         strlcpy(work,argv[0],MAXBUF);
3812         int p = strlen(work);
3813         // we just want the dir
3814         while (strlen(work))
3815         {
3816                 if (work[p] == '/')
3817                 {
3818                         work[p] = '\0';
3819                         break;
3820                 }
3821                 work[p--] = '\0';
3822         }
3823         char buffer[MAXBUF], otherdir[MAXBUF];
3824         // Get the current working directory
3825         if( getcwd( buffer, MAXBUF ) == NULL )
3826                 return "";
3827         chdir(work);
3828         if( getcwd( otherdir, MAXBUF ) == NULL )
3829                 return "";
3830         chdir(buffer);
3831         return otherdir;
3832 }
3833
3834 bool LoadModule(const char* filename)
3835 {
3836         char modfile[MAXBUF];
3837         snprintf(modfile,MAXBUF,"%s/%s",ModPath,filename);
3838         std::string filename_str = filename;
3839         if (!DirValid(modfile))
3840         {
3841                 log(DEFAULT,"Module %s is not within the modules directory.",modfile);
3842                 snprintf(MODERR,MAXBUF,"Module %s is not within the modules directory.",modfile);
3843                 return false;
3844         }
3845         log(DEBUG,"Loading module: %s",modfile);
3846         if (FileExists(modfile))
3847         {
3848                 for (int j = 0; j < module_names.size(); j++)
3849                 {
3850                         if (module_names[j] == filename_str)
3851                         {
3852                                 log(DEFAULT,"Module %s is already loaded, cannot load a module twice!",modfile);
3853                                 snprintf(MODERR,MAXBUF,"Module already loaded");
3854                                 return false;
3855                         }
3856                 }
3857                 ircd_module* a = new ircd_module(modfile);
3858                 factory[MODCOUNT+1] = a;
3859                 if (factory[MODCOUNT+1]->LastError())
3860                 {
3861                         log(DEFAULT,"Unable to load %s: %s",modfile,factory[MODCOUNT+1]->LastError());
3862                         snprintf(MODERR,MAXBUF,"Loader/Linker error: %s",factory[MODCOUNT+1]->LastError());
3863                         MODCOUNT--;
3864                         return false;
3865                 }
3866                 if (factory[MODCOUNT+1]->factory)
3867                 {
3868                         Module* m = factory[MODCOUNT+1]->factory->CreateModule();
3869                         modules[MODCOUNT+1] = m;
3870                         /* save the module and the module's classfactory, if
3871                          * this isnt done, random crashes can occur :/ */
3872                         module_names.push_back(filename);
3873                 }
3874                 else
3875                 {
3876                         log(DEFAULT,"Unable to load %s",modfile);
3877                         snprintf(MODERR,MAXBUF,"Factory function failed!");
3878                         return false;
3879                 }
3880         }
3881         else
3882         {
3883                 log(DEFAULT,"InspIRCd: startup: Module Not Found %s",modfile);
3884                 snprintf(MODERR,MAXBUF,"Module file could not be found");
3885                 return false;
3886         }
3887         MODCOUNT++;
3888         return true;
3889 }
3890
3891 int InspIRCd(char** argv, int argc)
3892 {
3893         struct sockaddr_in client,server;
3894         char addrs[MAXBUF][255];
3895         int incomingSockfd, result = TRUE;
3896         socklen_t length;
3897         int count = 0;
3898         int selectResult = 0, selectResult2 = 0;
3899         char configToken[MAXBUF], Addr[MAXBUF], Type[MAXBUF];
3900         fd_set selectFds;
3901         timeval tv;
3902
3903         std::string logpath = GetFullProgDir(argv,argc) + "/ircd.log";
3904         log_file = fopen(logpath.c_str(),"a+");
3905         if (!log_file)
3906         {
3907                 printf("ERROR: Could not write to logfile %s, bailing!\n\n",logpath.c_str());
3908                 Exit(ERROR);
3909         }
3910         printf("Logging to %s...\n",logpath.c_str());
3911
3912         log(DEFAULT,"$Id$");
3913         if (geteuid() == 0)
3914         {
3915                 printf("WARNING!!! You are running an irc server as ROOT!!! DO NOT DO THIS!!!\n\n");
3916                 Exit(ERROR);
3917                 log(DEFAULT,"InspIRCd: startup: not starting with UID 0!");
3918         }
3919         SetupCommandTable();
3920         log(DEBUG,"InspIRCd: startup: default command table set up");
3921
3922         ReadConfig(true,NULL);
3923         if (DieValue[0])
3924         {
3925                 printf("WARNING: %s\n\n",DieValue);
3926                 log(DEFAULT,"Ut-Oh, somebody didn't read their config file: '%s'",DieValue);
3927                 exit(0);
3928         }
3929         log(DEBUG,"InspIRCd: startup: read config");
3930
3931         int clientportcount = 0, serverportcount = 0;
3932
3933         for (count = 0; count < ConfValueEnum("bind",&config_f); count++)
3934         {
3935                 ConfValue("bind","port",count,configToken,&config_f);
3936                 ConfValue("bind","address",count,Addr,&config_f);
3937                 ConfValue("bind","type",count,Type,&config_f);
3938                 if (!strcmp(Type,"servers"))
3939                 {
3940                         char Default[MAXBUF];
3941                         strcpy(Default,"no");
3942                         ConfValue("bind","default",count,Default,&config_f);
3943                         if (strchr(Default,'y'))
3944                         {
3945                                 defaultRoute = serverportcount;
3946                                 log(DEBUG,"InspIRCd: startup: binding '%s:%s' is default server route",Addr,configToken);
3947                         }
3948                         me[serverportcount] = new serverrec(ServerName,100L,false);
3949                         if (!me[serverportcount]->CreateListener(Addr,atoi(configToken)))
3950                         {
3951                                 log(DEFAULT,"Warning: Failed to bind port %lu",(unsigned long)atoi(configToken));
3952                                 printf("Warning: Failed to bind port %lu\n",(unsigned long)atoi(configToken));
3953                         }
3954                         else
3955                         {
3956                                 serverportcount++;
3957                         }
3958                 }
3959                 else
3960                 {
3961                         ports[clientportcount] = atoi(configToken);
3962                         strlcpy(addrs[clientportcount],Addr,256);
3963                         clientportcount++;
3964                 }
3965                 log(DEBUG,"InspIRCd: startup: read binding %s:%s [%s] from config",Addr,configToken, Type);
3966         }
3967         portCount = clientportcount;
3968         SERVERportCount = serverportcount;
3969
3970         log(DEBUG,"InspIRCd: startup: read %lu total client ports and %lu total server ports",(unsigned long)portCount,(unsigned long)SERVERportCount);
3971         log(DEBUG,"InspIRCd: startup: InspIRCd is now starting!");
3972
3973         printf("\n");
3974
3975         /* BugFix By Craig! :p */
3976         MODCOUNT = -1;
3977         for (count = 0; count < ConfValueEnum("module",&config_f); count++)
3978         {
3979                 ConfValue("module","name",count,configToken,&config_f);
3980                 printf("Loading module... \033[1;32m%s\033[0m\n",configToken);
3981                 if (!LoadModule(configToken))
3982                 {
3983                         log(DEFAULT,"Exiting due to a module loader error.");
3984                         printf("\nThere was an error loading a module: %s\n\nYou might want to do './inspircd start' instead of 'bin/inspircd'\n\n",ModuleError());
3985                         Exit(0);
3986                 }
3987         }
3988         log(DEFAULT,"Total loaded modules: %lu",(unsigned long)MODCOUNT+1);
3989
3990         startup_time = time(NULL);
3991
3992         char PID[MAXBUF];
3993         ConfValue("pid","file",0,PID,&config_f);
3994         // write once here, to try it out and make sure its ok
3995         WritePID(PID);
3996
3997         /* setup select call */
3998         FD_ZERO(&selectFds);
3999         log(DEBUG,"InspIRCd: startup: zero selects");
4000         log(VERBOSE,"InspIRCd: startup: portCount = %lu", (unsigned long)portCount);
4001
4002         for (count = 0; count < portCount; count++)
4003         {
4004                 if ((openSockfd[boundPortCount] = OpenTCPSocket()) == ERROR)
4005                 {
4006                         log(DEBUG,"InspIRCd: startup: bad fd %lu",(unsigned long)openSockfd[boundPortCount]);
4007                         return(ERROR);
4008                 }
4009                 if (BindSocket(openSockfd[boundPortCount],client,server,ports[count],addrs[count]) == ERROR)
4010                 {
4011                         log(DEFAULT,"InspIRCd: startup: failed to bind port %lu",(unsigned long)ports[count]);
4012                 }
4013                 else    /* well we at least bound to one socket so we'll continue */
4014                 {
4015                         boundPortCount++;
4016                 }
4017         }
4018
4019         log(DEBUG,"InspIRCd: startup: total bound ports %lu",(unsigned long)boundPortCount);
4020
4021         /* if we didn't bind to anything then abort */
4022         if (boundPortCount == 0)
4023         {
4024                 log(DEFAULT,"InspIRCd: startup: no ports bound, bailing!");
4025                 printf("\nERROR: Was not able to bind any of %lu ports! Please check your configuration.\n\n", (unsigned long)portCount);
4026                 return (ERROR);
4027         }
4028
4029
4030         printf("\nInspIRCd is now running!\n");
4031
4032         if (nofork)
4033         {
4034                 log(VERBOSE,"Not forking as -nofork was specified");
4035         }
4036         else
4037         {
4038                 if (DaemonSeed() == ERROR)
4039                 {
4040                         log(DEFAULT,"InspIRCd: startup: can't daemonise");
4041                         printf("ERROR: could not go into daemon mode. Shutting down.\n");
4042                         Exit(ERROR);
4043                 }
4044         }
4045
4046         WritePID(PID);
4047
4048         length = sizeof (client);
4049         char tcp_msg[MAXBUF],tcp_host[MAXBUF];
4050
4051         fd_set serverfds;
4052         timeval tvs;
4053         tvs.tv_usec = 10000L;
4054         tvs.tv_sec = 0;
4055         tv.tv_sec = 0;
4056         tv.tv_usec = 10000L;
4057         char data[65536];
4058         timeval tval;
4059         fd_set sfd;
4060         tval.tv_usec = 10000L;
4061         tval.tv_sec = 0;
4062         int total_in_this_set = 0;
4063         int v = 0;
4064         bool expire_run = false;
4065
4066         /* main loop, this never returns */
4067         for (;;)
4068         {
4069 #ifdef _POSIX_PRIORITY_SCHEDULING
4070                 sched_yield();
4071 #endif
4072                 // poll dns queue
4073                 dns_poll();
4074                 FD_ZERO(&sfd);
4075
4076                 // we only read time() once per iteration rather than tons of times!
4077                 TIME = time(NULL);
4078
4079                 // *FIX* Instead of closing sockets in kill_link when they receive the ERROR :blah line, we should queue
4080                 // them in a list, then reap the list every second or so.
4081                 if (((TIME % 5) == 0) && (!expire_run))
4082                 {
4083                         expire_lines();
4084                         FOREACH_MOD OnBackgroundTimer(TIME);
4085                         expire_run = true;
4086                         continue;
4087                 }
4088                 if ((TIME % 5) == 1)
4089                         expire_run = false;
4090
4091                 // fix by brain - this must be below any manipulation of the hashmap by modules
4092                 user_hash::iterator count2 = clientlist.begin();
4093
4094                 FD_ZERO(&serverfds);
4095
4096                 for (int x = 0; x != SERVERportCount; x++)
4097                 {
4098                         if (me[x])
4099                                 FD_SET(me[x]->fd, &serverfds);
4100                 }
4101
4102                 // serverFds timevals went here
4103
4104                 tvs.tv_usec = 30000L;
4105                 tvs.tv_sec = 0;
4106                 int servresult = select(32767, &serverfds, NULL, NULL, &tvs);
4107                 if (servresult > 0)
4108                 {
4109                         for (int x = 0; x != SERVERportCount; x++)
4110                         {
4111                                 if ((me[x]) && (FD_ISSET (me[x]->fd, &serverfds)))
4112                                 {
4113                                         char remotehost[MAXBUF],resolved[MAXBUF];
4114                                         length = sizeof (client);
4115                                         incomingSockfd = accept (me[x]->fd, (sockaddr *) &client, &length);
4116                                         if (incomingSockfd != -1)
4117                                         {
4118                                                 strlcpy(remotehost,(char *)inet_ntoa(client.sin_addr),MAXBUF);
4119                                                 if(CleanAndResolve(resolved, remotehost) != TRUE)
4120                                                 {
4121                                                         strlcpy(resolved,remotehost,MAXBUF);
4122                                                 }
4123                                                 // add to this connections ircd_connector vector
4124                                                 // *FIX* - we need the LOCAL port not the remote port in &client!
4125                                                 me[x]->AddIncoming(incomingSockfd,resolved,me[x]->port);
4126                                         }
4127                                 }
4128                         }
4129                 }
4130
4131                 for (int x = 0; x < SERVERportCount; x++)
4132                 {
4133                         std::deque<std::string> msgs;
4134                         msgs.clear();
4135                         if ((me[x]) && (me[x]->RecvPacket(msgs, tcp_host)))
4136                         {
4137                                 for (int ctr = 0; ctr < msgs.size(); ctr++)
4138                                 {
4139                                         strlcpy(tcp_msg,msgs[ctr].c_str(),MAXBUF);
4140                                         log(DEBUG,"Processing: %s",tcp_msg);
4141                                         if (!tcp_msg[0])
4142                                         {
4143                                                 log(DEBUG,"Invalid string from %s [route%lu]",tcp_host,(unsigned long)x);
4144                                                 break;
4145                                         }
4146                                         // during a netburst, send all data to all other linked servers
4147                                         if ((((nb_start>0) && (tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))) || (is_uline(tcp_host)))
4148                                         {
4149                                                 if (is_uline(tcp_host))
4150                                                 {
4151                                                         if ((tcp_msg[0] != 'Y') && (tcp_msg[0] != 'X') && (tcp_msg[0] != 'F'))
4152                                                         {
4153                                                                 NetSendToAllExcept(tcp_host,tcp_msg);
4154                                                         }
4155                                                 }
4156                                                 else
4157                                                         NetSendToAllExcept(tcp_host,tcp_msg);
4158                                         }
4159                                         std::string msg = tcp_msg;
4160                                         FOREACH_MOD OnPacketReceive(msg,tcp_host);
4161                                         strlcpy(tcp_msg,msg.c_str(),MAXBUF);
4162                                         handle_link_packet(tcp_msg, tcp_host, me[x]);
4163                                 }
4164                                 goto label;
4165                         }
4166                 }
4167
4168
4169         while (count2 != clientlist.end())
4170         {
4171                 FD_ZERO(&sfd);
4172                 total_in_this_set = 0;
4173
4174                 user_hash::iterator xcount = count2;
4175                 user_hash::iterator endingiter = count2;
4176
4177                 if (count2 == clientlist.end()) break;
4178
4179                 userrec* curr = NULL;
4180
4181                 if (count2->second)
4182                         curr = count2->second;
4183
4184                 if ((curr) && (curr->fd != 0))
4185                 {
4186 #ifdef _POSIX_PRIORITY_SCHEDULING
4187         sched_yield();
4188 #endif
4189                         // assemble up to 64 sockets into an fd_set
4190                         // to implement a pooling mechanism.
4191                         //
4192                         // This should be up to 64x faster than the
4193                         // old implementation.
4194                         while (total_in_this_set < 64)
4195                         {
4196                                 if (count2 != clientlist.end())
4197                                 {
4198                                         curr = count2->second;
4199                                         // we don't check the state of remote users.
4200                                         if ((curr->fd != -1) && (curr->fd != FD_MAGIC_NUMBER))
4201                                         {
4202                                                 FD_SET (curr->fd, &sfd);
4203
4204                                                 // registration timeout -- didnt send USER/NICK/HOST in the time specified in
4205                                                 // their connection class.
4206                                                 if ((TIME > curr->timeout) && (curr->registered != 7))
4207                                                 {
4208                                                         log(DEBUG,"InspIRCd: registration timeout: %s",curr->nick);
4209                                                         kill_link(curr,"Registration timeout");
4210                                                         goto label;
4211                                                 }
4212                                                 if ((TIME > curr->signon) && (curr->registered == 3) && (AllModulesReportReady(curr)))
4213                                                 {
4214                                                         log(DEBUG,"signon exceed, registered=3, and modules ready, OK");
4215                                                         curr->dns_done = true;
4216                                                         statsDnsBad++;
4217                                                         FullConnectUser(curr);
4218                                                         goto label;
4219                                                 }
4220                                                 if ((curr->dns_done) && (curr->registered == 3) && (AllModulesReportReady(curr))) // both NICK and USER... and DNS
4221                                                 {
4222                                                         log(DEBUG,"dns done, registered=3, and modules ready, OK");
4223                                                         FullConnectUser(curr);
4224                                                         goto label;
4225                                                 }
4226                                                 if ((TIME > curr->nping) && (isnick(curr->nick)) && (curr->registered == 7))
4227                                                 {
4228                                                         if ((!curr->lastping) && (curr->registered == 7))
4229                                                         {
4230                                                                 log(DEBUG,"InspIRCd: ping timeout: %s",curr->nick);
4231                                                                 kill_link(curr,"Ping timeout");
4232                                                                 goto label;
4233                                                         }
4234                                                         Write(curr->fd,"PING :%s",ServerName);
4235                                                         log(DEBUG,"InspIRCd: pinging: %s",curr->nick);
4236                                                         curr->lastping = 0;
4237                                                         curr->nping = TIME+curr->pingmax;       // was hard coded to 120
4238                                                 }
4239                                         }
4240                                         count2++;
4241                                         total_in_this_set++;
4242                                 }
4243                                 else break;
4244                         }
4245
4246                         endingiter = count2;
4247                         count2 = xcount; // roll back to where we were
4248
4249                         v = 0;
4250
4251                         // tvals defined here
4252
4253                         tval.tv_usec = 1000L;
4254                         selectResult2 = select(65535, &sfd, NULL, NULL, &tval);
4255
4256                         // now loop through all of the items in this pool if any are waiting
4257                         if (selectResult2 > 0)
4258                         for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++)
4259                         {
4260
4261 #ifdef _POSIX_PRIORITY_SCHEDULING
4262                                 sched_yield();
4263 #endif
4264                                 userrec* cu = count2a->second;
4265                                 result = EAGAIN;
4266                                 if ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1) && (FD_ISSET (cu->fd, &sfd)))
4267                                 {
4268                                         log(DEBUG,"Data waiting on socket %d",cu->fd);
4269                                         int MOD_RESULT = 0;
4270                                         int result2 = 0;
4271                                         FOREACH_RESULT(OnRawSocketRead(cu->fd,data,65535,result2));
4272                                         if (!MOD_RESULT)
4273                                         {
4274                                                 result = read(cu->fd, data, 65535);
4275                                         }
4276                                         else result = result2;
4277                                         log(DEBUG,"Read result: %d",result);
4278                                         if (result)
4279                                         {
4280                                                 statsRecv += result;
4281                                                 // perform a check on the raw buffer as an array (not a string!) to remove
4282                                                 // characters 0 and 7 which are illegal in the RFC - replace them with spaces.
4283                                                 // hopefully this should stop even more people whining about "Unknown command: *"
4284                                                 for (int checker = 0; checker < result; checker++)
4285                                                 {
4286                                                         if ((data[checker] == 0) || (data[checker] == 7))
4287                                                                 data[checker] = ' ';
4288                                                 }
4289                                                 if (result > 0)
4290                                                         data[result] = '\0';
4291                                                 userrec* current = cu;
4292                                                 int currfd = current->fd;
4293                                                 int floodlines = 0;
4294                                                 // add the data to the users buffer
4295                                                 if (result > 0)
4296                                                 if (!current->AddBuffer(data))
4297                                                 {
4298                                                         // AddBuffer returned false, theres too much data in the user's buffer and theyre up to no good.
4299                                                         if (current->registered == 7)
4300                                                         {
4301                                                                 kill_link(current,"RecvQ exceeded");
4302                                                         }
4303                                                         else
4304                                                         {
4305                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4306                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4307                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4308                                                                 apply_lines();
4309                                                         }
4310                                                         goto label;
4311                                                 }
4312                                                 if (current->recvq.length() > NetBufferSize)
4313                                                 {
4314                                                         if (current->registered == 7)
4315                                                         {
4316                                                                 kill_link(current,"RecvQ exceeded");
4317                                                         }
4318                                                         else
4319                                                         {
4320                                                                 WriteOpers("*** Excess flood from %s",current->ip);
4321                                                                 log(DEFAULT,"Excess flood from: %s",current->ip);
4322                                                                 add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4323                                                                 apply_lines();
4324                                                         }
4325                                                         goto label;
4326                                                 }
4327                                                 // while there are complete lines to process...
4328                                                 while (current->BufferIsReady())
4329                                                 {
4330                                                         floodlines++;
4331                                                         if (TIME > current->reset_due)
4332                                                         {
4333                                                                 current->reset_due = TIME + current->threshold;
4334                                                                 current->lines_in = 0;
4335                                                         }
4336                                                         current->lines_in++;
4337                                                         if (current->lines_in > current->flood)
4338                                                         {
4339                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4340                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4341                                                                 kill_link(current,"Excess flood");
4342                                                                 goto label;
4343                                                         }
4344                                                         if ((floodlines > current->flood) && (current->flood != 0))
4345                                                         {
4346                                                                 if (current->registered == 7)
4347                                                                 {
4348                                                                         log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4349                                                                         WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4350                                                                         kill_link(current,"Excess flood");
4351                                                                 }
4352                                                                 else
4353                                                                 {
4354                                                                         add_zline(120,ServerName,"Flood from unregistered connection",current->ip);
4355                                                                         apply_lines();
4356                                                                 }
4357                                                                 goto label;
4358                                                         }
4359                                                         char sanitized[MAXBUF];
4360                                                         // use GetBuffer to copy single lines into the sanitized string
4361                                                         std::string single_line = current->GetBuffer();
4362                                                         current->bytes_in += single_line.length();
4363                                                         current->cmds_in++;
4364                                                         if (single_line.length()>512)
4365                                                         {
4366                                                                 log(DEFAULT,"Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4367                                                                 WriteOpers("*** Excess flood from: %s!%s@%s",current->nick,current->ident,current->host);
4368                                                                 kill_link(current,"Excess flood");
4369                                                                 goto label;
4370                                                         }
4371                                                         strlcpy(sanitized,single_line.c_str(),MAXBUF);
4372                                                         if (*sanitized)
4373                                                         {
4374                                                                 userrec* old_comp = fd_ref_table[currfd];
4375                                                                 // we're gonna re-scan to check if the nick is gone, after every
4376                                                                 // command - if it has, we're gonna bail
4377                                                                 process_buffer(sanitized,current);
4378                                                                 // look for the user's record in case it's changed... if theyve quit,
4379                                                                 // we cant do anything more with their buffer, so bail.
4380                                                                 // there used to be an ugly, slow loop here. Now we have a reference
4381                                                                 // table, life is much easier (and FASTER)
4382                                                                 userrec* new_comp = fd_ref_table[currfd];
4383                                                                 if ((currfd < 0) || (!fd_ref_table[currfd]) || (old_comp != new_comp))
4384                                                                         goto label;
4385
4386                                                         }
4387                                                 }
4388                                                 goto label;
4389                                         }
4390
4391                                         if ((result == -1) && (errno != EAGAIN) && (errno != EINTR))
4392                                         {
4393                                                 log(DEBUG,"killing: %s",cu->nick);
4394                                                 kill_link(cu,strerror(errno));
4395                                                 goto label;
4396                                         }
4397                                 }
4398                                 // result EAGAIN means nothing read
4399                                 if (result == EAGAIN)
4400                                 {
4401                                 }
4402                                 else
4403                                 if (result == 0)
4404                                 {
4405                                         if (count2->second)
4406                                         {
4407                                                 log(DEBUG,"InspIRCd: Exited: %s",cu->nick);
4408                                                 kill_link(cu,"Client exited");
4409                                                 // must bail here? kill_link removes the hash, corrupting the iterator
4410                                                 log(DEBUG,"Bailing from client exit");
4411                                                 goto label;
4412                                         }
4413                                 }
4414                                 else if (result > 0)
4415                                 {
4416                                 }
4417                         }
4418                 }
4419                 for (int q = 0; q < total_in_this_set; q++)
4420                 {
4421                         count2++;
4422                 }
4423         }
4424
4425 #ifdef _POSIX_PRIORITY_SCHEDULING
4426         sched_yield();
4427 #endif
4428
4429         // set up select call
4430         for (count = 0; count < boundPortCount; count++)
4431         {
4432                 FD_SET (openSockfd[count], &selectFds);
4433         }
4434
4435         tv.tv_usec = 30000L;
4436         selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv);
4437
4438         /* select is reporting a waiting socket. Poll them all to find out which */
4439         if (selectResult > 0)
4440         {
4441                 char target[MAXBUF], resolved[MAXBUF];
4442                 for (count = 0; count < boundPortCount; count++)
4443                 {
4444                         if (FD_ISSET (openSockfd[count], &selectFds))
4445                         {
4446                                 length = sizeof (client);
4447                                 incomingSockfd = accept (openSockfd[count], (struct sockaddr *) &client, &length);
4448
4449                                 strlcpy (target, (char *) inet_ntoa (client.sin_addr), MAXBUF);
4450                                 strlcpy (resolved, target, MAXBUF);
4451
4452                                 if (incomingSockfd < 0)
4453                                 {
4454                                         WriteOpers("*** WARNING: Accept failed on port %lu (%s)",(unsigned long)ports[count],target);
4455                                         log(DEBUG,"InspIRCd: accept failed: %lu",(unsigned long)ports[count]);
4456                                         statsRefused++;
4457                                 }
4458                                 else
4459                                 {
4460                                         FOREACH_MOD OnRawSocketAccept(incomingSockfd, resolved, ports[count]);
4461                                         statsAccept++;
4462                                         AddClient(incomingSockfd, resolved, ports[count], false, inet_ntoa (client.sin_addr));
4463                                         log(DEBUG,"InspIRCd: adding client on port %lu fd=%lu",(unsigned long)ports[count],(unsigned long)incomingSockfd);
4464                                 }
4465                                 goto label;
4466                         }
4467                 }
4468         }
4469         label:
4470         if (0) {};
4471 #ifdef _POSIX_PRIORITY_SCHEDULING
4472         sched_yield();
4473         sched_yield();
4474 #endif
4475 }
4476 /* not reached */
4477 close (incomingSockfd);
4478 }
4479