src/helperfuncs.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 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include "inspircd.h"
  21 #include "inspircd_io.h"
  22 #include "inspircd_util.h"
  23 #include <unistd.h>
  24 #include <fcntl.h>
  25 #include <sys/errno.h>
  26 #include <time.h>
  27 #include <string>
  28 #ifdef GCC3
  29 #include <ext/hash_map>
  30 #else
  31 #include <hash_map>
  32 #endif
  33 #include <sstream>
  34 #include <vector>
  35 #include <deque>
  36 #include <stdarg.h>
  37 #include "connection.h"
  38 #include "users.h"
  39 #include "ctables.h"
  40 #include "globals.h"
  41 #include "modules.h"
  42 #include "dynamic.h"
  43 #include "wildcard.h"
  44 #include "message.h"
  45 #include "mode.h"
  46 #include "xline.h"
  47 #include "commands.h"
  48 #include "inspstring.h"
  49 #include "helperfuncs.h"
  50 #include "hashcomp.h"
  51 #include "typedefs.h"
  52
  53 extern int MODCOUNT;
  54 extern std::vector<Module*> modules;
  55 extern ServerConfig *Config;
  56 extern time_t TIME;
  57 extern char lowermap[255];
  58 static char list[MAXBUF];
  59 extern userrec* fd_ref_table[65536];
  60 extern serverstats* stats;
  61 static char already_sent[65536];
  62 extern std::vector<userrec*> all_opers;
  63 extern user_hash clientlist;
  64 extern chan_hash chanlist;
  65 extern command_table cmdlist;
  66
  67 void log(int level,char *text, ...)
  68 {
  69         char textbuffer[MAXBUF];
  70         va_list argsPtr;
  71         time_t rawtime;
  72         struct tm * timeinfo;
  73         if (level < Config->LogLevel)
  74                 return;
  75
  76         time(&rawtime);
  77         timeinfo = localtime(&rawtime);
  78
  79         if (Config->log_file)
  80         {
  81                 char b[MAXBUF];
  82                 va_start (argsPtr, text);
  83                 vsnprintf(textbuffer, MAXBUF, text, argsPtr);
  84                 va_end(argsPtr);
  85                 strlcpy(b,asctime(timeinfo),MAXBUF);
  86                 b[24] = ':';    // we know this is the end of the time string
  87                 if (Config->log_file)
  88                         fprintf(Config->log_file,"%s %s\n",b,textbuffer);
  89                 if (Config->nofork)
  90                 {
  91                         // nofork enabled? display it on terminal too
  92                         printf("%s %s\n",b,textbuffer);
  93                 }
  94         }
  95 }
  96
  97 void readfile(file_cache &F, const char* fname)
  98 {
  99         FILE* file;
 100         char linebuf[MAXBUF];
 101
 102         log(DEBUG,"readfile: loading %s",fname);
 103         F.clear();
 104         file =  fopen(fname,"r");
 105         if (file)
 106         {
 107                 while (!feof(file))
 108                 {
 109                         fgets(linebuf,sizeof(linebuf),file);
 110                         linebuf[strlen(linebuf)-1]='\0';
 111                         if (!*linebuf)
 112                         {
 113                                 strcpy(linebuf,"  ");
 114                         }
 115                         if (!feof(file))
 116                         {
 117                                 F.push_back(linebuf);
 118                         }
 119                 }
 120                 fclose(file);
 121         }
 122         else
 123         {
 124                 log(DEBUG,"readfile: failed to load file: %s",fname);
 125         }
 126         log(DEBUG,"readfile: loaded %s, %lu lines",fname,(unsigned long)F.size());
 127 }
 128
 129 void Write(int sock,char *text, ...)
 130 {
 131         if (sock < 0)
 132                 return;
 133         if (!text)
 134         {
 135                 log(DEFAULT,"*** BUG *** Write was given an invalid parameter");
 136                 return;
 137         }
 138         char textbuffer[MAXBUF];
 139         va_list argsPtr;
 140         char tb[MAXBUF];
 141
 142         va_start (argsPtr, text);
 143         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 144         va_end(argsPtr);
 145         int bytes = snprintf(tb,MAXBUF,"%s\r\n",textbuffer);
 146         chop(tb);
 147         if (fd_ref_table[sock])
 148         {
 149                 int MOD_RESULT = 0;
 150                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 151                 fd_ref_table[sock]->AddWriteBuf(tb);
 152                 stats->statsSent += bytes;
 153         }
 154         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 155 }
 156
 157 /* write a server formatted numeric response to a single socket */
 158
 159 void WriteServ(int sock, char* text, ...)
 160 {
 161         if (sock < 0)
 162                 return;
 163         if (!text)
 164         {
 165                 log(DEFAULT,"*** BUG *** WriteServ was given an invalid parameter");
 166                 return;
 167         }
 168         char textbuffer[MAXBUF],tb[MAXBUF];
 169         va_list argsPtr;
 170         va_start (argsPtr, text);
 171
 172         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 173         va_end(argsPtr);
 174         int bytes = snprintf(tb,MAXBUF,":%s %s\r\n",Config->ServerName,textbuffer);
 175         chop(tb);
 176         if (fd_ref_table[sock])
 177         {
 178                 int MOD_RESULT = 0;
 179                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 180                 fd_ref_table[sock]->AddWriteBuf(tb);
 181                 stats->statsSent += bytes;
 182         }
 183         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 184 }
 185
 186 /* write text from an originating user to originating user */
 187
 188 void WriteFrom(int sock, userrec *user,char* text, ...)
 189 {
 190         if (sock < 0)
 191                 return;
 192         if ((!text) || (!user))
 193         {
 194                 log(DEFAULT,"*** BUG *** WriteFrom was given an invalid parameter");
 195                 return;
 196         }
 197         char textbuffer[MAXBUF],tb[MAXBUF];
 198         va_list argsPtr;
 199         va_start (argsPtr, text);
 200
 201         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 202         va_end(argsPtr);
 203         int bytes = snprintf(tb,MAXBUF,":%s!%s@%s %s\r\n",user->nick,user->ident,user->dhost,textbuffer);
 204         chop(tb);
 205         if (fd_ref_table[sock])
 206         {
 207                 int MOD_RESULT = 0;
 208                 FOREACH_RESULT(OnRawSocketWrite(sock,tb,bytes));
 209                 fd_ref_table[sock]->AddWriteBuf(tb);
 210                 stats->statsSent += bytes;
 211         }
 212         else log(DEFAULT,"ERROR! attempted write to a user with no fd_ref_table entry!!!");
 213 }
 214
 215 /* write text to an destination user from a source user (e.g. user privmsg) */
 216
 217 void WriteTo(userrec *source, userrec *dest,char *data, ...)
 218 {
 219         if ((!dest) || (!data))
 220         {
 221                 log(DEFAULT,"*** BUG *** WriteTo was given an invalid parameter");
 222                 return;
 223         }
 224         if (dest->fd == FD_MAGIC_NUMBER)
 225                 return;
 226         char textbuffer[MAXBUF],tb[MAXBUF];
 227         va_list argsPtr;
 228         va_start (argsPtr, data);
 229         vsnprintf(textbuffer, MAXBUF, data, argsPtr);
 230         va_end(argsPtr);
 231         chop(tb);
 232
 233         // if no source given send it from the server.
 234         if (!source)
 235         {
 236                 WriteServ(dest->fd,":%s %s",Config->ServerName,textbuffer);
 237         }
 238         else
 239         {
 240                 WriteFrom(dest->fd,source,"%s",textbuffer);
 241         }
 242 }
 243
 244 /* write formatted text from a source user to all users on a channel
 245  * including the sender (NOT for privmsg, notice etc!) */
 246
 247 void WriteChannel(chanrec* Ptr, userrec* user, char* text, ...)
 248 {
 249         if ((!Ptr) || (!user) || (!text))
 250         {
 251                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 252                 return;
 253         }
 254         char textbuffer[MAXBUF];
 255         va_list argsPtr;
 256         va_start (argsPtr, text);
 257         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 258         va_end(argsPtr);
 259
 260         std::vector<char*> *ulist = Ptr->GetUsers();
 261         for (unsigned int j = 0; j < ulist->size(); j++)
 262         {
 263                 char* o = (*ulist)[j];
 264                 userrec* otheruser = (userrec*)o;
 265                 if (otheruser->fd != FD_MAGIC_NUMBER)
 266                         WriteTo(user,otheruser,"%s",textbuffer);
 267         }
 268 }
 269
 270 /* write formatted text from a source user to all users on a channel
 271  * including the sender (NOT for privmsg, notice etc!) doesnt send to
 272  * users on remote servers */
 273
 274 void WriteChannelLocal(chanrec* Ptr, userrec* user, char* text, ...)
 275 {
 276         if ((!Ptr) || (!text))
 277         {
 278                 log(DEFAULT,"*** BUG *** WriteChannel was given an invalid parameter");
 279                 return;
 280         }
 281         char textbuffer[MAXBUF];
 282         va_list argsPtr;
 283         va_start (argsPtr, text);
 284         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 285         va_end(argsPtr);
 286
 287         std::vector<char*> *ulist = Ptr->GetUsers();
 288         for (unsigned int j = 0; j < ulist->size(); j++)
 289         {
 290                 char* o = (*ulist)[j];
 291                 userrec* otheruser = (userrec*)o;
 292                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (otheruser->fd != -1) && (otheruser != user))
 293                 {
 294                         if (!user)
 295                         {
 296                                 WriteServ(otheruser->fd,"%s",textbuffer);
 297                         }
 298                         else
 299                         {
 300                                 WriteTo(user,otheruser,"%s",textbuffer);
 301                         }
 302                 }
 303         }
 304 }
 305
 306 void WriteChannelWithServ(char* ServName, chanrec* Ptr, char* text, ...)
 307 {
 308         if ((!Ptr) || (!text))
 309         {
 310                 log(DEFAULT,"*** BUG *** WriteChannelWithServ was given an invalid parameter");
 311                 return;
 312         }
 313         char textbuffer[MAXBUF];
 314         va_list argsPtr;
 315         va_start (argsPtr, text);
 316         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 317         va_end(argsPtr);
 318
 319
 320         std::vector<char*> *ulist = Ptr->GetUsers();
 321         for (unsigned int j = 0; j < ulist->size(); j++)
 322         {
 323                 char* o = (*ulist)[j];
 324                 userrec* otheruser = (userrec*)o;
 325                 if (otheruser->fd != FD_MAGIC_NUMBER)
 326                         WriteServ(otheruser->fd,"%s",textbuffer);
 327         }
 328 }
 329
 330 /* write formatted text from a source user to all users on a channel except
 331  * for the sender (for privmsg etc) */
 332
 333 void ChanExceptSender(chanrec* Ptr, userrec* user, char* text, ...)
 334 {
 335         if ((!Ptr) || (!user) || (!text))
 336         {
 337                 log(DEFAULT,"*** BUG *** ChanExceptSender was given an invalid parameter");
 338                 return;
 339         }
 340         char textbuffer[MAXBUF];
 341         va_list argsPtr;
 342         va_start (argsPtr, text);
 343         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 344         va_end(argsPtr);
 345
 346         std::vector<char*> *ulist = Ptr->GetUsers();
 347         for (unsigned int j = 0; j < ulist->size(); j++)
 348         {
 349                 char* o = (*ulist)[j];
 350                 userrec* otheruser = (userrec*)o;
 351                 if ((otheruser->fd != FD_MAGIC_NUMBER) && (user != otheruser))
 352                         WriteFrom(otheruser->fd,user,"%s",textbuffer);
 353         }
 354 }
 355
 356 std::string GetServerDescription(char* servername)
 357 {
 358         std::string description = "";
 359         FOREACH_MOD OnGetServerDescription(servername,description);
 360         if (description != "")
 361         {
 362                 return description;
 363         }
 364         else
 365         {
 366                 return Config->ServerDesc; // not a remote server that can be found, it must be me.
 367         }
 368 }
 369
 370 /* write a formatted string to all users who share at least one common
 371  * channel, including the source user e.g. for use in NICK */
 372
 373 void WriteCommon(userrec *u, char* text, ...)
 374 {
 375         if (!u)
 376         {
 377                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 378                 return;
 379         }
 380
 381         if (u->registered != 7) {
 382                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 383                 return;
 384         }
 385
 386         char textbuffer[MAXBUF];
 387         va_list argsPtr;
 388         va_start (argsPtr, text);
 389         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 390         va_end(argsPtr);
 391
 392         // FIX: Stops a message going to the same person more than once
 393         memset(&already_sent,0,65536);
 394
 395         bool sent_to_at_least_one = false;
 396
 397         for (unsigned int i = 0; i < u->chans.size(); i++)
 398         {
 399                 if (u->chans[i].channel)
 400                 {
 401                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 402                         for (unsigned int j = 0; j < ulist->size(); j++)
 403                         {
 404                                 char* o = (*ulist)[j];
 405                                 userrec* otheruser = (userrec*)o;
 406                                 if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 407                                 {
 408                                         already_sent[otheruser->fd] = 1;
 409                                         WriteFrom(otheruser->fd,u,"%s",textbuffer);
 410                                         sent_to_at_least_one = true;
 411                                 }
 412                         }
 413                 }
 414         }
 415         // if the user was not in any channels, no users will receive the text. Make sure the user
 416         // receives their OWN message for WriteCommon
 417         if (!sent_to_at_least_one)
 418         {
 419                 WriteFrom(u->fd,u,"%s",textbuffer);
 420         }
 421 }
 422
 423 /* write a formatted string to all users who share at least one common
 424  * channel, NOT including the source user e.g. for use in QUIT */
 425
 426 void WriteCommonExcept(userrec *u, char* text, ...)
 427 {
 428         if (!u)
 429         {
 430                 log(DEFAULT,"*** BUG *** WriteCommon was given an invalid parameter");
 431                 return;
 432         }
 433
 434         if (u->registered != 7) {
 435                 log(DEFAULT,"*** BUG *** WriteCommon on an unregistered user");
 436                 return;
 437         }
 438
 439         char textbuffer[MAXBUF];
 440         va_list argsPtr;
 441         va_start (argsPtr, text);
 442         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 443         va_end(argsPtr);
 444
 445         memset(&already_sent,0,65536);
 446
 447         for (unsigned int i = 0; i < u->chans.size(); i++)
 448         {
 449                 if (u->chans[i].channel)
 450                 {
 451                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 452                         for (unsigned int j = 0; j < ulist->size(); j++)
 453                         {
 454                                 char* o = (*ulist)[j];
 455                                 userrec* otheruser = (userrec*)o;
 456                                 if (u != otheruser)
 457                                 {
 458                                         if ((otheruser->fd > 0) && (!already_sent[otheruser->fd]))
 459                                         {
 460                                                 already_sent[otheruser->fd] = 1;
 461                                                 WriteFrom(otheruser->fd,u,"%s",textbuffer);
 462                                         }
 463                                 }
 464                         }
 465                 }
 466         }
 467 }
 468
 469 void WriteOpers(char* text, ...)
 470 {
 471         if (!text)
 472         {
 473                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 474                 return;
 475         }
 476
 477         char textbuffer[MAXBUF];
 478         va_list argsPtr;
 479         va_start (argsPtr, text);
 480         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 481         va_end(argsPtr);
 482
 483         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 484         {
 485                 userrec* a = *i;
 486                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 487                 {
 488                         if (strchr(a->modes,'s'))
 489                         {
 490                                 // send server notices to all with +s
 491                                 WriteServ(a->fd,"NOTICE %s :%s",a->nick,textbuffer);
 492                         }
 493                 }
 494         }
 495 }
 496
 497 void ServerNoticeAll(char* text, ...)
 498 {
 499         if (!text)
 500                 return;
 501
 502         char textbuffer[MAXBUF];
 503         va_list argsPtr;
 504         va_start (argsPtr, text);
 505         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 506         va_end(argsPtr);
 507
 508         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 509         {
 510                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
 511                 {
 512                         WriteServ(i->second->fd,"NOTICE $%s :%s",Config->ServerName,textbuffer);
 513                 }
 514         }
 515 }
 516
 517 void ServerPrivmsgAll(char* text, ...)
 518 {
 519         if (!text)
 520                 return;
 521
 522         char textbuffer[MAXBUF];
 523         va_list argsPtr;
 524         va_start (argsPtr, text);
 525         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 526         va_end(argsPtr);
 527
 528         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 529         {
 530                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
 531                 {
 532                         WriteServ(i->second->fd,"PRIVMSG $%s :%s",Config->ServerName,textbuffer);
 533                 }
 534         }
 535 }
 536
 537 void NoticeAllOpers(userrec *source, bool local_only, char* text, ...)
 538 {
 539         if ((!text) || (!source))
 540         {
 541                 log(DEFAULT,"*** BUG *** NoticeAllOpers was given an invalid parameter");
 542                 return;
 543         }
 544
 545         char textbuffer[MAXBUF];
 546         va_list argsPtr;
 547         va_start (argsPtr, text);
 548         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 549         va_end(argsPtr);
 550
 551         for (std::vector<userrec*>::iterator i = all_opers.begin(); i != all_opers.end(); i++)
 552         {
 553                 userrec* a = *i;
 554                 if ((a) && (a->fd != FD_MAGIC_NUMBER))
 555                 {
 556                         if (strchr(a->modes,'s'))
 557                         {
 558                                 // send server notices to all with +s
 559                                 WriteServ(a->fd,"NOTICE %s :*** Notice From %s: %s",a->nick,source->nick,textbuffer);
 560                         }
 561                 }
 562         }
 563
 564 }
 565 // returns TRUE of any users on channel C occupy server 'servername'.
 566
 567 bool ChanAnyOnThisServer(chanrec *c,char* servername)
 568 {
 569         log(DEBUG,"ChanAnyOnThisServer");
 570
 571         std::vector<char*> *ulist = c->GetUsers();
 572         for (unsigned int j = 0; j < ulist->size(); j++)
 573         {
 574                 char* o = (*ulist)[j];
 575                 userrec* user = (userrec*)o;
 576                 if (!strcasecmp(user->server,servername))
 577                         return true;
 578         }
 579         return false;
 580 }
 581
 582 // returns true if user 'u' shares any common channels with any users on server 'servername'
 583
 584 bool CommonOnThisServer(userrec* u,const char* servername)
 585 {
 586         log(DEBUG,"ChanAnyOnThisServer");
 587
 588         for (unsigned int i = 0; i < u->chans.size(); i++)
 589         {
 590                 if (u->chans[i].channel)
 591                 {
 592                         std::vector<char*> *ulist = u->chans[i].channel->GetUsers();
 593                         for (unsigned int j = 0; j < ulist->size(); j++)
 594                         {
 595                                 char* o = (*ulist)[j];
 596                                 userrec* user = (userrec*)o;
 597                                 if (!strcasecmp(user->server,servername))
 598                                         return true;
 599                         }
 600                 }
 601         }
 602         return false;
 603 }
 604
 605
 606 void WriteMode(const char* modes, int flags, const char* text, ...)
 607 {
 608         if ((!text) || (!modes) || (!flags))
 609         {
 610                 log(DEFAULT,"*** BUG *** WriteMode was given an invalid parameter");
 611                 return;
 612         }
 613
 614         char textbuffer[MAXBUF];
 615         va_list argsPtr;
 616         va_start (argsPtr, text);
 617         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 618         va_end(argsPtr);
 619         int modelen = strlen(modes);
 620
 621         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 622         {
 623                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
 624                 {
 625                         bool send_to_user = false;
 626
 627                         if (flags == WM_AND)
 628                         {
 629                                 send_to_user = true;
 630                                 for (int n = 0; n < modelen; n++)
 631                                 {
 632                                         if (!hasumode(i->second,modes[n]))
 633                                         {
 634                                                 send_to_user = false;
 635                                                 break;
 636                                         }
 637                                 }
 638                         }
 639                         else if (flags == WM_OR)
 640                         {
 641                                 send_to_user = false;
 642                                 for (int n = 0; n < modelen; n++)
 643                                 {
 644                                         if (hasumode(i->second,modes[n]))
 645                                         {
 646                                                 send_to_user = true;
 647                                                 break;
 648                                         }
 649                                 }
 650                         }
 651
 652                         if (send_to_user)
 653                         {
 654                                 WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,textbuffer);
 655                         }
 656                 }
 657         }
 658 }
 659
 660 void NoticeAll(userrec *source, bool local_only, char* text, ...)
 661 {
 662         if ((!text) || (!source))
 663         {
 664                 log(DEFAULT,"*** BUG *** NoticeAll was given an invalid parameter");
 665                 return;
 666         }
 667
 668         char textbuffer[MAXBUF];
 669         va_list argsPtr;
 670         va_start (argsPtr, text);
 671         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 672         va_end(argsPtr);
 673
 674         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 675         {
 676                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
 677                 {
 678                         WriteFrom(i->second->fd,source,"NOTICE $* :%s",textbuffer);
 679                 }
 680         }
 681
 682 }
 683
 684
 685 void WriteWallOps(userrec *source, bool local_only, char* text, ...)
 686 {
 687         if ((!text) || (!source))
 688         {
 689                 log(DEFAULT,"*** BUG *** WriteOpers was given an invalid parameter");
 690                 return;
 691         }
 692
 693         char textbuffer[MAXBUF];
 694         va_list argsPtr;
 695         va_start (argsPtr, text);
 696         vsnprintf(textbuffer, MAXBUF, text, argsPtr);
 697         va_end(argsPtr);
 698
 699         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 700         {
 701                 if ((i->second) && (i->second->fd != FD_MAGIC_NUMBER))
 702                 {
 703                         if (strchr(i->second->modes,'w'))
 704                         {
 705                                 WriteTo(source,i->second,"WALLOPS :%s",textbuffer);
 706                         }
 707                 }
 708         }
 709 }
 710
 711 /* convert a string to lowercase. Note following special circumstances
 712  * taken from RFC 1459. Many "official" server branches still hold to this
 713  * rule so i will too;
 714  *
 715  *  Because of IRC's scandanavian origin, the characters {}| are
 716  *  considered to be the lower case equivalents of the characters []\,
 717  *  respectively. This is a critical issue when determining the
 718  *  equivalence of two nicknames.
 719  */
 720
 721 void strlower(char *n)
 722 {
 723         if (n)
 724         {
 725                 for (char* t = n; *t; t++)
 726                         *t = lowermap[(unsigned)*t];
 727         }
 728 }
 729
 730 /* Find a user record by nickname and return a pointer to it */
 731
 732 userrec* Find(std::string nick)
 733 {
 734         user_hash::iterator iter = clientlist.find(nick);
 735
 736         if (iter == clientlist.end())
 737                 /* Couldn't find it */
 738                 return NULL;
 739
 740         return iter->second;
 741 }
 742
 743 /* find a channel record by channel name and return a pointer to it */
 744
 745 chanrec* FindChan(const char* chan)
 746 {
 747         if (!chan)
 748         {
 749                 log(DEFAULT,"*** BUG *** Findchan was given an invalid parameter");
 750                 return NULL;
 751         }
 752
 753         chan_hash::iterator iter = chanlist.find(chan);
 754
 755         if (iter == chanlist.end())
 756                 /* Couldn't find it */
 757                 return NULL;
 758
 759         return iter->second;
 760 }
 761
 762
 763 long GetMaxBans(char* name)
 764 {
 765         char CM[MAXBUF];
 766         for (int count = 0; count < Config->ConfValueEnum("banlist",&Config->config_f); count++)
 767         {
 768                 Config->ConfValue("banlist","chan",count,CM,&Config->config_f);
 769                 if (match(name,CM))
 770                 {
 771                         Config->ConfValue("banlist","limit",count,CM,&Config->config_f);
 772                         return atoi(CM);
 773                 }
 774         }
 775         return 64;
 776 }
 777
 778 void purge_empty_chans(userrec* u)
 779 {
 780
 781         int purge = 0;
 782
 783         // firstly decrement the count on each channel
 784         for (unsigned int f = 0; f < u->chans.size(); f++)
 785         {
 786                 if (u->chans[f].channel)
 787                 {
 788                         u->chans[f].channel->DelUser((char*)u);
 789                 }
 790         }
 791
 792         for (unsigned int i = 0; i < u->chans.size(); i++)
 793         {
 794                 if (u->chans[i].channel)
 795                 {
 796                         if (!usercount(u->chans[i].channel))
 797                         {
 798                                 chan_hash::iterator i2 = chanlist.find(u->chans[i].channel->name);
 799                                 /* kill the record */
 800                                 if (i2 != chanlist.end())
 801                                 {
 802                                         log(DEBUG,"del_channel: destroyed: %s",i2->second->name);
 803                                         if (i2->second)
 804                                                 delete i2->second;
 805                                         chanlist.erase(i2);
 806                                         purge++;
 807                                         u->chans[i].channel = NULL;
 808                                 }
 809                         }
 810                         else
 811                         {
 812                                 log(DEBUG,"skipped purge for %s",u->chans[i].channel->name);
 813                         }
 814                 }
 815         }
 816         log(DEBUG,"completed channel purge, killed %lu",(unsigned long)purge);
 817
 818         DeleteOper(u);
 819 }
 820
 821
 822 char* chanmodes(chanrec *chan)
 823 {
 824         static char scratch[MAXBUF];
 825         static char sparam[MAXBUF];
 826         int offset = 0;
 827
 828         if (!chan)
 829         {
 830                 log(DEFAULT,"*** BUG *** chanmodes was given an invalid parameter");
 831                 *scratch = '\0';
 832                 return scratch;
 833         }
 834
 835         *scratch = '\0';
 836         *sparam = '\0';
 837         if (chan->binarymodes & CM_NOEXTERNAL)
 838                 scratch[offset++] = 'n';
 839         if (chan->binarymodes & CM_TOPICLOCK)
 840                 scratch[offset++] = 't';
 841         if (*chan->key)
 842                 scratch[offset++] = 'k';
 843         if (chan->limit)
 844                 scratch[offset++] = 'l';
 845         if (chan->binarymodes & CM_INVITEONLY)
 846                 scratch[offset++] = 'i';
 847         if (chan->binarymodes & CM_MODERATED)
 848                 scratch[offset++] = 'm';
 849         if (chan->binarymodes & CM_SECRET)
 850                 scratch[offset++] = 's';
 851         if (chan->binarymodes & CM_PRIVATE)
 852                 scratch[offset++] = 'p';
 853         if (*chan->key)
 854                 snprintf(sparam,MAXBUF," %s",chan->key);
 855         if (chan->limit)
 856         {
 857                 char foo[24];
 858                 sprintf(foo," %lu",(unsigned long)chan->limit);
 859                 strlcat(sparam,foo,MAXBUF);
 860         }
 861         if (*chan->custom_modes)
 862         {
 863                 for (char* t= chan->custom_modes; *t; t++)
 864                         scratch[offset++] = *t;
 865                 for (int z = 0; chan->custom_modes[z] != 0; z++)
 866                 {
 867                         std::string extparam = chan->GetModeParameter(chan->custom_modes[z]);
 868                         if (extparam != "")
 869                         {
 870                                 strlcat(sparam," ",MAXBUF);
 871                                 strlcat(sparam,extparam.c_str(),MAXBUF);
 872                         }
 873                 }
 874         }
 875         /* Null terminate scratch */
 876         scratch[offset] = '\0';
 877         strlcat(scratch,sparam,MAXMODES);
 878         return scratch;
 879 }
 880
 881
 882 /* compile a userlist of a channel into a string, each nick seperated by
 883  * spaces and op, voice etc status shown as @ and + */
 884
 885 void userlist(userrec *user,chanrec *c)
 886 {
 887         if ((!c) || (!user))
 888         {
 889                 log(DEFAULT,"*** BUG *** userlist was given an invalid parameter");
 890                 return;
 891         }
 892
 893         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
 894
 895         std::vector<char*> *ulist = c->GetUsers();
 896         for (unsigned int i = 0; i < ulist->size(); i++)
 897         {
 898                 char* o = (*ulist)[i];
 899                 userrec* otheruser = (userrec*)o;
 900                 if ((!has_channel(user,c)) && (strchr(otheruser->modes,'i')))
 901                 {
 902                         /* user is +i, and source not on the channel, does not show
 903                          * nick in NAMES list */
 904                         continue;
 905                 }
 906                 strlcat(list,cmode(otheruser,c),MAXBUF);
 907                 strlcat(list,otheruser->nick,MAXBUF);
 908                 strlcat(list," ",MAXBUF);
 909                 if (strlen(list)>(480-NICKMAX))
 910                 {
 911                         /* list overflowed into
 912                          * multiple numerics */
 913                         WriteServ(user->fd,"%s",list);
 914                         snprintf(list,MAXBUF,"353 %s = %s :", user->nick, c->name);
 915                 }
 916         }
 917         /* if whats left in the list isnt empty, send it */
 918         if (list[strlen(list)-1] != ':')
 919         {
 920                 WriteServ(user->fd,"%s",list);
 921         }
 922 }
 923
 924 /* return a count of the users on a specific channel accounting for
 925  * invisible users who won't increase the count. e.g. for /LIST */
 926
 927 int usercount_i(chanrec *c)
 928 {
 929         int count = 0;
 930
 931         if (!c)
 932         {
 933                 log(DEFAULT,"*** BUG *** usercount_i was given an invalid parameter");
 934                 return 0;
 935         }
 936
 937         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
 938         {
 939                 if (i->second)
 940                 {
 941                         if (has_channel(i->second,c))
 942                         {
 943                                 if (isnick(i->second->nick))
 944                                 {
 945                                         if ((!has_channel(i->second,c)) && (strchr(i->second->modes,'i')))
 946                                         {
 947                                                 /* user is +i, and source not on the channel, does not show
 948                                                  * nick in NAMES list */
 949                                                 continue;
 950                                         }
 951                                         count++;
 952                                 }
 953                         }
 954                 }
 955         }
 956         log(DEBUG,"usercount_i: %s %lu",c->name,(unsigned long)count);
 957         return count;
 958 }
 959
 960
 961 int usercount(chanrec *c)
 962 {
 963         if (!c)
 964         {
 965                 log(DEFAULT,"*** BUG *** usercount was given an invalid parameter");
 966                 return 0;
 967         }
 968         int count = c->GetUserCounter();
 969         log(DEBUG,"usercount: %s %lu",c->name,(unsigned long)count);
 970         return count;
 971 }
 972
 973
 974 // looks up a users password for their connection class (<ALLOW>/<DENY> tags)
 975
 976 char* Passwd(userrec *user)
 977 {
 978         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 979         {
 980                 if (match(user->host,i->host) && (i->type == CC_ALLOW))
 981                 {
 982                         return i->pass;
 983                 }
 984         }
 985         return "";
 986 }
 987
 988 bool IsDenied(userrec *user)
 989 {
 990         for (ClassVector::iterator i = Config->Classes.begin(); i != Config->Classes.end(); i++)
 991         {
 992                 if (match(user->host,i->host) && (i->type == CC_DENY))
 993                 {
 994                         return true;
 995                 }
 996         }
 997         return false;
 998 }
 999
1000
1001
1002
1003 /* sends out an error notice to all connected clients (not to be used
1004  * lightly!) */
1005
1006 void send_error(char *s)
1007 {
1008         log(DEBUG,"send_error: %s",s);
1009         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1010         {
1011                 if (isnick(i->second->nick))
1012                 {
1013                         WriteServ(i->second->fd,"NOTICE %s :%s",i->second->nick,s);
1014                 }
1015                 else
1016                 {
1017                         // fix - unregistered connections receive ERROR, not NOTICE
1018                         Write(i->second->fd,"ERROR :%s",s);
1019                 }
1020         }
1021 }
1022
1023 void Error(int status)
1024 {
1025         signal (SIGALRM, SIG_IGN);
1026         signal (SIGPIPE, SIG_IGN);
1027         signal (SIGTERM, SIG_IGN);
1028         signal (SIGABRT, SIG_IGN);
1029         signal (SIGSEGV, SIG_IGN);
1030         signal (SIGURG, SIG_IGN);
1031         signal (SIGKILL, SIG_IGN);
1032         log(DEFAULT,"*** fell down a pothole in the road to perfection ***");
1033         send_error("Error! Segmentation fault! save meeeeeeeeeeeeee *splat!*");
1034         Exit(status);
1035 }
1036
1037 // this function counts all users connected, wether they are registered or NOT.
1038 int usercnt(void)
1039 {
1040         return clientlist.size();
1041 }
1042
1043 // this counts only registered users, so that the percentages in /MAP don't mess up when users are sitting in an unregistered state
1044 int registered_usercount(void)
1045 {
1046         int c = 0;
1047         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1048         {
1049                 if (i->second->registered == 7) c++;
1050         }
1051         return c;
1052 }
1053
1054 int usercount_invisible(void)
1055 {
1056         int c = 0;
1057         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1058         {
1059                 if ((isnick(i->second->nick)) && (strchr(i->second->modes,'i'))) c++;
1060         }
1061         return c;
1062 }
1063
1064 int usercount_opers(void)
1065 {
1066         int c = 0;
1067         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1068         {
1069                 if ((isnick(i->second->nick)) && (strchr(i->second->modes,'o'))) c++;
1070         }
1071         return c;
1072 }
1073
1074 int usercount_unknown(void)
1075 {
1076         int c = 0;
1077
1078         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1079         {
1080                 if ((i->second->fd > -1) && (i->second->registered != 7))
1081                         c++;
1082         }
1083         return c;
1084 }
1085
1086 long chancount(void)
1087 {
1088         return chanlist.size();
1089 }
1090
1091 long local_count()
1092 {
1093         int c = 0;
1094         for (user_hash::const_iterator i = clientlist.begin(); i != clientlist.end(); i++)
1095         {
1096                 if ((isnick(i->second->nick)) && (i->second->fd > -1)) c++;
1097         }
1098         return c;
1099 }
1100
1101 void ShowMOTD(userrec *user)
1102 {
1103         char buf[65536];
1104         std::string WholeMOTD = "";
1105         if (!Config->MOTD.size())
1106         {
1107                 WriteServ(user->fd,"422 %s :Message of the day file is missing.",user->nick);
1108                 return;
1109         }
1110         snprintf(buf,65535,":%s 375 %s :- %s message of the day\r\n", Config->ServerName, user->nick, Config->ServerName);
1111         WholeMOTD = WholeMOTD + buf;
1112         for (unsigned int i = 0; i < Config->MOTD.size(); i++)
1113         {
1114                 snprintf(buf,65535,":%s 372 %s :- %s\r\n", Config->ServerName, user->nick, Config->MOTD[i].c_str());
1115                 WholeMOTD = WholeMOTD + buf;
1116         }
1117         snprintf(buf,65535,":%s 376 %s :End of message of the day.\r\n", Config->ServerName, user->nick);
1118         WholeMOTD = WholeMOTD + buf;
1119         // only one write operation
1120         user->AddWriteBuf(WholeMOTD);
1121         stats->statsSent += WholeMOTD.length();
1122 }
1123
1124 void ShowRULES(userrec *user)
1125 {
1126         if (!Config->RULES.size())
1127         {
1128                 WriteServ(user->fd,"NOTICE %s :Rules file is missing.",user->nick);
1129                 return;
1130         }
1131         WriteServ(user->fd,"NOTICE %s :%s rules",user->nick,Config->ServerName);
1132         for (unsigned int i = 0; i < Config->RULES.size(); i++)
1133         {
1134                 WriteServ(user->fd,"NOTICE %s :%s",user->nick,Config->RULES[i].c_str());
1135         }
1136         WriteServ(user->fd,"NOTICE %s :End of %s rules.",user->nick,Config->ServerName);
1137 }
1138
1139 // this returns 1 when all modules are satisfied that the user should be allowed onto the irc server
1140 // (until this returns true, a user will block in the waiting state, waiting to connect up to the
1141 // registration timeout maximum seconds)
1142 bool AllModulesReportReady(userrec* user)
1143 {
1144         for (int i = 0; i <= MODCOUNT; i++)
1145         {
1146                 int res = modules[i]->OnCheckReady(user);
1147                         if (!res)
1148                                 return false;
1149         }
1150         return true;
1151 }
1152
1153 void createcommand(char* cmd, handlerfunc f, char flags, int minparams,char* source)
1154 {
1155         command_t comm;
1156         /* create the command and push it onto the table */
1157         strlcpy(comm.command,cmd,MAXBUF);
1158         strlcpy(comm.source,source,MAXBUF);
1159         comm.handler_function = f;
1160         comm.flags_needed = flags;
1161         comm.min_params = minparams;
1162         comm.use_count = 0;
1163         comm.total_bytes = 0;
1164         cmdlist.push_back(comm);
1165         log(DEBUG,"Added command %s (%lu parameters)",cmd,(unsigned long)minparams);
1166 }
1167
1168
1169 void SetupCommandTable(void)
1170 {
1171         createcommand("USER",handle_user,0,4,"<core>");
1172         createcommand("NICK",handle_nick,0,1,"<core>");
1173         createcommand("QUIT",handle_quit,0,0,"<core>");
1174         createcommand("VERSION",handle_version,0,0,"<core>");
1175         createcommand("PING",handle_ping,0,1,"<core>");
1176         createcommand("PONG",handle_pong,0,1,"<core>");
1177         createcommand("ADMIN",handle_admin,0,0,"<core>");
1178         createcommand("PRIVMSG",handle_privmsg,0,2,"<core>");
1179         createcommand("INFO",handle_info,0,0,"<core>");
1180         createcommand("TIME",handle_time,0,0,"<core>");
1181         createcommand("WHOIS",handle_whois,0,1,"<core>");
1182         createcommand("WALLOPS",handle_wallops,'o',1,"<core>");
1183         createcommand("NOTICE",handle_notice,0,2,"<core>");
1184         createcommand("JOIN",handle_join,0,1,"<core>");
1185         createcommand("NAMES",handle_names,0,0,"<core>");
1186         createcommand("PART",handle_part,0,1,"<core>");
1187         createcommand("KICK",handle_kick,0,2,"<core>");
1188         createcommand("MODE",handle_mode,0,1,"<core>");
1189         createcommand("TOPIC",handle_topic,0,1,"<core>");
1190         createcommand("WHO",handle_who,0,1,"<core>");
1191         createcommand("MOTD",handle_motd,0,0,"<core>");
1192         createcommand("RULES",handle_rules,0,0,"<core>");
1193         createcommand("OPER",handle_oper,0,2,"<core>");
1194         createcommand("LIST",handle_list,0,0,"<core>");
1195         createcommand("DIE",handle_die,'o',1,"<core>");
1196         createcommand("RESTART",handle_restart,'o',1,"<core>");
1197         createcommand("KILL",handle_kill,'o',2,"<core>");
1198         createcommand("REHASH",handle_rehash,'o',0,"<core>");
1199         createcommand("LUSERS",handle_lusers,0,0,"<core>");
1200         createcommand("STATS",handle_stats,0,1,"<core>");
1201         createcommand("USERHOST",handle_userhost,0,1,"<core>");
1202         createcommand("AWAY",handle_away,0,0,"<core>");
1203         createcommand("ISON",handle_ison,0,0,"<core>");
1204         createcommand("SUMMON",handle_summon,0,0,"<core>");
1205         createcommand("USERS",handle_users,0,0,"<core>");
1206         createcommand("INVITE",handle_invite,0,0,"<core>");
1207         createcommand("PASS",handle_pass,0,1,"<core>");
1208         createcommand("TRACE",handle_trace,'o',0,"<core>");
1209         createcommand("WHOWAS",handle_whowas,0,1,"<core>");
1210         createcommand("CONNECT",handle_connect,'o',1,"<core>");
1211         createcommand("SQUIT",handle_squit,'o',0,"<core>");
1212         createcommand("MODULES",handle_modules,0,0,"<core>");
1213         createcommand("LINKS",handle_links,0,0,"<core>");
1214         createcommand("MAP",handle_map,0,0,"<core>");
1215         createcommand("KLINE",handle_kline,'o',1,"<core>");
1216         createcommand("GLINE",handle_gline,'o',1,"<core>");
1217         createcommand("ZLINE",handle_zline,'o',1,"<core>");
1218         createcommand("QLINE",handle_qline,'o',1,"<core>");
1219         createcommand("ELINE",handle_eline,'o',1,"<core>");
1220         createcommand("LOADMODULE",handle_loadmodule,'o',1,"<core>");
1221         createcommand("UNLOADMODULE",handle_unloadmodule,'o',1,"<core>");
1222         createcommand("SERVER",handle_server,0,0,"<core>");
1223         createcommand("COMMANDS",handle_commands,0,0,"<core>");
1224 }
1225
1226 bool DirValid(char* dirandfile)
1227 {
1228         char work[MAXBUF];
1229         strlcpy(work,dirandfile,MAXBUF);
1230         int p = strlen(work);
1231         // we just want the dir
1232         while (strlen(work))
1233         {
1234                 if (work[p] == '/')
1235                 {
1236                         work[p] = '\0';
1237                         break;
1238                 }
1239                 work[p--] = '\0';
1240         }
1241         char buffer[MAXBUF], otherdir[MAXBUF];
1242         // Get the current working directory
1243         if( getcwd( buffer, MAXBUF ) == NULL )
1244                 return false;
1245         chdir(work);
1246         if( getcwd( otherdir, MAXBUF ) == NULL )
1247                 return false;
1248         chdir(buffer);
1249         if (strlen(otherdir) >= strlen(work))
1250         {
1251                 otherdir[strlen(work)] = '\0';
1252                 if (!strcmp(otherdir,work))
1253                 {
1254                         return true;
1255                 }
1256                 return false;
1257         }
1258         else return false;
1259 }
1260
1261 std::string GetFullProgDir(char** argv, int argc)
1262 {
1263         char work[MAXBUF];
1264         strlcpy(work,argv[0],MAXBUF);
1265         int p = strlen(work);
1266         // we just want the dir
1267         while (strlen(work))
1268         {
1269                 if (work[p] == '/')
1270                 {
1271                         work[p] = '\0';
1272                         break;
1273                 }
1274                 work[p--] = '\0';
1275         }
1276         char buffer[MAXBUF], otherdir[MAXBUF];
1277         // Get the current working directory
1278         if( getcwd( buffer, MAXBUF ) == NULL )
1279                 return "";
1280         chdir(work);
1281         if( getcwd( otherdir, MAXBUF ) == NULL )
1282                 return "";
1283         chdir(buffer);
1284         return otherdir;
1285 }
1286