src/mode.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 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 "configreader.h"
  22 #include <unistd.h>
  23 #include <sys/errno.h>
  24 #include <time.h>
  25 #include <string>
  26 #ifdef GCC3
  27 #include <ext/hash_map>
  28 #else
  29 #include <hash_map>
  30 #endif
  31 #include <map>
  32 #include <sstream>
  33 #include <vector>
  34 #include <deque>
  35 #include "connection.h"
  36 #include "users.h"
  37 #include "ctables.h"
  38 #include "globals.h"
  39 #include "modules.h"
  40 #include "dynamic.h"
  41 #include "wildcard.h"
  42 #include "message.h"
  43 #include "commands.h"
  44 #include "xline.h"
  45 #include "inspstring.h"
  46 #include "helperfuncs.h"
  47 #include "mode.h"
  48
  49 extern int MODCOUNT;
  50 extern std::vector<Module*> modules;
  51 extern std::vector<ircd_module*> factory;
  52 extern InspIRCd* ServerInstance;
  53 extern ServerConfig* Config;
  54
  55 extern time_t TIME;
  56
  57 userrec* ModeParser::SanityChecks(userrec *user,char *dest,chanrec *chan,int status)
  58 {
  59         userrec *d;
  60         if ((!user) || (!dest) || (!chan) || (!*dest))
  61         {
  62                 return NULL;
  63         }
  64         d = Find(dest);
  65         if (!d)
  66         {
  67                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
  68                 return NULL;
  69         }
  70         return d;
  71 }
  72
  73 char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
  74 {
  75         if (!chan)
  76                 return NULL;
  77
  78         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
  79         {
  80                 if (((ucrec*)(*i))->channel == chan)
  81                 {
  82                         if (((ucrec*)(*i))->uc_modes & MASK)
  83                         {
  84                                 return NULL;
  85                         }
  86                         ((ucrec*)(*i))->uc_modes = ((ucrec*)(*i))->uc_modes | MASK;
  87                         switch (MASK)
  88                         {
  89                                 case UCMODE_OP:
  90                                         ((ucrec*)(*i))->channel->AddOppedUser(d);
  91                                 break;
  92                                 case UCMODE_HOP:
  93                                         ((ucrec*)(*i))->channel->AddHalfoppedUser(d);
  94                                 break;
  95                                 case UCMODE_VOICE:
  96                                         ((ucrec*)(*i))->channel->AddVoicedUser(d);
  97                                 break;
  98                         }
  99                         log(DEBUG,"grant: %s %s",((ucrec*)(*i))->channel->name,d->nick);
 100                         return d->nick;
 101                 }
 102         }
 103         return NULL;
 104 }
 105
 106 char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
 107 {
 108         if (!chan)
 109                 return NULL;
 110
 111         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
 112         {
 113                 if (((ucrec*)(*i))->channel == chan)
 114                 {
 115                         if ((((ucrec*)(*i))->uc_modes & MASK) == 0)
 116                         {
 117                                 return NULL;
 118                         }
 119                         ((ucrec*)(*i))->uc_modes ^= MASK;
 120                         switch (MASK)
 121                         {
 122                                 case UCMODE_OP:
 123                                         ((ucrec*)(*i))->channel->DelOppedUser(d);
 124                                 break;
 125                                 case UCMODE_HOP:
 126                                         ((ucrec*)(*i))->channel->DelHalfoppedUser(d);
 127                                 break;
 128                                 case UCMODE_VOICE:
 129                                         ((ucrec*)(*i))->channel->DelVoicedUser(d);
 130                                 break;
 131                         }
 132                         log(DEBUG,"revoke: %s %s",((ucrec*)(*i))->channel->name,d->nick);
 133                         return d->nick;
 134                 }
 135         }
 136         return NULL;
 137 }
 138
 139 char* ModeParser::GiveOps(userrec *user,char *dest,chanrec *chan,int status)
 140 {
 141         userrec *d = this->SanityChecks(user,dest,chan,status);
 142
 143         if (d)
 144         {
 145                 if (IS_LOCAL(user))
 146                 {
 147                         int MOD_RESULT = 0;
 148                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_OP));
 149
 150                         if (MOD_RESULT == ACR_DENY)
 151                                 return NULL;
 152                         if (MOD_RESULT == ACR_DEFAULT)
 153                         {
 154                                 if ((status < STATUS_OP) && (!is_uline(user->server)))
 155                                 {
 156                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
 157                                         return NULL;
 158                                 }
 159                         }
 160                 }
 161
 162                 return this->Grant(d,chan,UCMODE_OP);
 163         }
 164         return NULL;
 165 }
 166
 167 char* ModeParser::GiveHops(userrec *user,char *dest,chanrec *chan,int status)
 168 {
 169         userrec *d = this->SanityChecks(user,dest,chan,status);
 170
 171         if (d)
 172         {
 173                 if (IS_LOCAL(user))
 174                 {
 175                         int MOD_RESULT = 0;
 176                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_HALFOP));
 177
 178                         if (MOD_RESULT == ACR_DENY)
 179                                 return NULL;
 180                         if (MOD_RESULT == ACR_DEFAULT)
 181                         {
 182                                 if ((status < STATUS_OP) && (!is_uline(user->server)))
 183                                 {
 184                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
 185                                         return NULL;
 186                                 }
 187                         }
 188                 }
 189
 190                 return this->Grant(d,chan,UCMODE_HOP);
 191         }
 192         return NULL;
 193 }
 194
 195 char* ModeParser::GiveVoice(userrec *user,char *dest,chanrec *chan,int status)
 196 {
 197         userrec *d = this->SanityChecks(user,dest,chan,status);
 198
 199         if (d)
 200         {
 201                 if (IS_LOCAL(user))
 202                 {
 203                         int MOD_RESULT = 0;
 204                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_VOICE));
 205
 206                         if (MOD_RESULT == ACR_DENY)
 207                                 return NULL;
 208                         if (MOD_RESULT == ACR_DEFAULT)
 209                         {
 210                                 if ((status < STATUS_HOP) && (!is_uline(user->server)))
 211                                 {
 212                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 213                                         return NULL;
 214                                 }
 215                         }
 216                 }
 217
 218                 return this->Grant(d,chan,UCMODE_VOICE);
 219         }
 220         return NULL;
 221 }
 222
 223 char* ModeParser::TakeOps(userrec *user,char *dest,chanrec *chan,int status)
 224 {
 225         userrec *d = this->SanityChecks(user,dest,chan,status);
 226
 227         if (d)
 228         {
 229                 if (IS_LOCAL(user))
 230                 {
 231                         int MOD_RESULT = 0;
 232                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEOP));
 233
 234                         if (MOD_RESULT == ACR_DENY)
 235                                 return NULL;
 236                         if (MOD_RESULT == ACR_DEFAULT)
 237                         {
 238                                 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 239                                 {
 240                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 241                                         return NULL;
 242                                 }
 243                         }
 244                 }
 245
 246                 return this->Revoke(d,chan,UCMODE_OP);
 247         }
 248         return NULL;
 249 }
 250
 251 char* ModeParser::TakeHops(userrec *user,char *dest,chanrec *chan,int status)
 252 {
 253         userrec *d = this->SanityChecks(user,dest,chan,status);
 254
 255         if (d)
 256         {
 257                 if (IS_LOCAL(user))
 258                 {
 259                         int MOD_RESULT = 0;
 260                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEHALFOP));
 261
 262                         if (MOD_RESULT == ACR_DENY)
 263                                 return NULL;
 264                         if (MOD_RESULT == ACR_DEFAULT)
 265                         {
 266                                 /* Tweak by Brain suggested by w00t, allow a halfop to dehalfop themselves */
 267                                 if ((user != d) && ((status < STATUS_OP) && (!is_uline(user->server))))
 268                                 {
 269                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 270                                         return NULL;
 271                                 }
 272                         }
 273                 }
 274
 275                 return this->Revoke(d,chan,UCMODE_HOP);
 276         }
 277         return NULL;
 278 }
 279
 280 char* ModeParser::TakeVoice(userrec *user,char *dest,chanrec *chan,int status)
 281 {
 282         userrec *d = this->SanityChecks(user,dest,chan,status);
 283
 284         if (d)
 285         {
 286                 if (IS_LOCAL(user))
 287                 {
 288                         int MOD_RESULT = 0;
 289                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEVOICE));
 290
 291                         if (MOD_RESULT == ACR_DENY)
 292                                 return NULL;
 293                         if (MOD_RESULT == ACR_DEFAULT)
 294                         {
 295                                 if ((status < STATUS_HOP) && (!is_uline(user->server)))
 296                                 {
 297                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 298                                         return NULL;
 299                                 }
 300                         }
 301                 }
 302
 303                 return this->Revoke(d,chan,UCMODE_VOICE);
 304         }
 305         return NULL;
 306 }
 307
 308 char* ModeParser::AddBan(userrec *user,char *dest,chanrec *chan,int status)
 309 {
 310         BanItem b;
 311         int toomanyexclamation = 0;
 312         int toomanyat = 0;
 313
 314         if ((!user) || (!dest) || (!chan) || (!*dest))
 315         {
 316                 log(DEFAULT,"*** BUG *** AddBan was given an invalid parameter");
 317                 return NULL;
 318         }
 319
 320         for (char* i = dest; *i; i++)
 321         {
 322                 if ((*i < 32) || (*i > 126))
 323                 {
 324                         return NULL;
 325                 }
 326                 else if (*i == '!')
 327                 {
 328                         toomanyexclamation++;
 329                 }
 330                 else if (*i == '@')
 331                 {
 332                         toomanyat++;
 333                 }
 334         }
 335
 336         if (toomanyexclamation != 1 || toomanyat != 1)
 337                 /*
 338                  * this stops sillyness like n!u!u!u@h, though note that most
 339                  * ircds don't actually verify banmask validity. --w00t
 340                  */
 341                 return NULL;
 342
 343         long maxbans = GetMaxBans(chan->name);
 344         if ((unsigned)chan->bans.size() > (unsigned)maxbans)
 345         {
 346                 WriteServ(user->fd,"478 %s %s :Channel ban list for %s is full (maximum entries for this channel is %d)",user->nick, chan->name,chan->name,maxbans);
 347                 return NULL;
 348         }
 349
 350         log(DEBUG,"AddBan: %s %s",chan->name,user->nick);
 351
 352         int MOD_RESULT = 0;
 353         FOREACH_RESULT(I_OnAddBan,OnAddBan(user,chan,dest));
 354         if (MOD_RESULT)
 355                 return NULL;
 356
 357         TidyBan(dest);
 358         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 359         {
 360                 if (!strcasecmp(i->data,dest))
 361                 {
 362                         // dont allow a user to set the same ban twice
 363                         return NULL;
 364                 }
 365         }
 366
 367         b.set_time = TIME;
 368         strlcpy(b.data,dest,MAXBUF);
 369         if (*user->nick)
 370         {
 371                 strlcpy(b.set_by,user->nick,NICKMAX-1);
 372         }
 373         else
 374         {
 375                 strlcpy(b.set_by,Config->ServerName,NICKMAX-1);
 376         }
 377         chan->bans.push_back(b);
 378         return dest;
 379 }
 380
 381 char* ModeParser::TakeBan(userrec *user,char *dest,chanrec *chan,int status)
 382 {
 383         if ((!user) || (!dest) || (!chan) || (!*dest)) {
 384                 log(DEFAULT,"*** BUG *** TakeBan was given an invalid parameter");
 385                 return 0;
 386         }
 387
 388         log(DEBUG,"del_ban: %s %s",chan->name,user->nick);
 389         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 390         {
 391                 if (!strcasecmp(i->data,dest))
 392                 {
 393                         int MOD_RESULT = 0;
 394                         FOREACH_RESULT(I_OnDelBan,OnDelBan(user,chan,dest));
 395                         if (MOD_RESULT)
 396                                 return NULL;
 397                         chan->bans.erase(i);
 398                         return dest;
 399                 }
 400         }
 401         return NULL;
 402 }
 403
 404
 405 /** ModeParser::CompressModes()
 406  * Tidies up redundant modes,
 407  * e.g. +nt-nt+i becomes +-+i
 408  * A section further down the chain tidies up the +-+- crap.
 409  */
 410 std::string ModeParser::CompressModes(std::string modes,bool channelmodes)
 411 {
 412         /*
 413          * OK, iterate over the mode string and count how many times a certain mode appears in it.
 414          * Then, erase all instances of any character that appears more than once.
 415          * This only operates on modes with no parameters, you can still +v-v+v-v+v-v to your heart's content.
 416          */
 417
 418         /* Do we really need an int here? Can you fit enough modes in a line to overflow a short? */
 419         short counts[127];
 420         bool active[127];
 421         memset(counts, 0, sizeof(counts));
 422         memset(active, 0, sizeof(active));
 423
 424         for(unsigned char* i = (unsigned char*)modes.c_str(); *i; i++)
 425         {
 426                 if((*i == '+') || (*i == '-'))
 427                         continue;
 428
 429                 if(!channelmodes || (channelmodes && (strchr("itnmsp", *i) || (ModeDefined(*i, MT_CHANNEL) && !ModeDefinedOn(*i,MT_CHANNEL) && !ModeDefinedOff(*i,MT_CHANNEL)))))
 430                 {
 431                         log(DEBUG,"Tidy mode %c", *i);
 432                         counts[*i]++;
 433                         active[*i] = true;
 434                 }
 435         }
 436
 437         for(unsigned char j = 65; j < 127; j++)
 438         {
 439                 if ((counts[j] > 1) && (active[j] == true))
 440                 {
 441                         std::string::size_type pos;
 442
 443                         while((pos = modes.find(j)) != std::string::npos)
 444                         {
 445                                 log(DEBUG, "Deleting occurence of mode %c...", j);
 446                                 modes.erase(pos, 1);
 447                                 log(DEBUG,"New mode line: %s", modes.c_str());
 448                         }
 449                 }
 450         }
 451
 452         return modes;
 453 }
 454
 455 void ModeParser::ProcessModes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent, bool local)
 456 {
 457         if ((!parameters) || (pcnt < 2)) {
 458                 return;
 459         }
 460
 461         char outlist[MAXBUF];
 462         char mlist[MAXBUF];
 463         char *outpars[32];
 464         int param = 2;
 465         int pc = 0;
 466         int ptr = 0;
 467         int mdir = 1;
 468         char* r = NULL;
 469         bool k_set = false, l_set = false, previously_set_l = false, previously_unset_l = false, previously_set_k = false, previously_unset_k = false;
 470
 471         int MOD_RESULT = 0;
 472
 473         if (IS_LOCAL(user))
 474         {
 475                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,chan,AC_GENERAL_MODE));
 476                 if (MOD_RESULT == ACR_DENY)
 477                         return;
 478         }
 479
 480         std::string tidied = this->CompressModes(parameters[1],true);
 481         strlcpy(mlist,tidied.c_str(),MAXBUF);
 482         char* modelist = mlist;
 483
 484         *outlist = *modelist;
 485         char* outl = outlist+1;
 486
 487         mdir = (*modelist == '+');
 488
 489         log(DEBUG,"process_modes: modelist: %s",modelist);
 490
 491         int len = tidied.length();
 492         while (modelist[len-1] == ' ')
 493                 modelist[--len] = '\0';
 494
 495         for (char* modechar = (modelist + 1); *modechar; ptr++, modechar++)
 496         {
 497                 r = NULL;
 498
 499                 /* If we have more than MAXMODES changes in one line,
 500                  * drop all after the MAXMODES
 501                  */
 502                 if (pc > MAXMODES-1)
 503                         break;
 504
 505
 506
 507                 switch (*modechar)
 508                 {
 509                         case '-':
 510                                 *outl++ = '-';
 511                                 mdir = 0;
 512                         break;
 513
 514                         case '+':
 515                                 *outl++ = '+';
 516                                 mdir = 1;
 517                         break;
 518
 519                         case 'o':
 520                                 log(DEBUG,"Ops");
 521                                 if ((param >= pcnt)) break;
 522                                 log(DEBUG,"Enough parameters left");
 523                                 r = NULL;
 524                                 if (mdir == 1)
 525                                 {
 526                                         MOD_RESULT = 0;
 527                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1));
 528                                         if (!MOD_RESULT)
 529                                         {
 530                                                 r = GiveOps(user,parameters[param++],chan,status);
 531                                         }
 532                                         else param++;
 533                                 }
 534                                 else
 535                                 {
 536                                         MOD_RESULT = 0;
 537                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1));
 538                                         if (!MOD_RESULT)
 539                                         {
 540                                                 r = TakeOps(user,parameters[param++],chan,status);
 541                                         }
 542                                         else param++;
 543                                 }
 544                                 if (r)
 545                                 {
 546                                         *outl++ = 'o';
 547                                         outpars[pc++] = r;
 548                                 }
 549                         break;
 550
 551                         case 'h':
 552                                 if (((param >= pcnt)) || (!Config->AllowHalfop)) break;
 553                                 r = NULL;
 554                                 if (mdir == 1)
 555                                 {
 556                                         MOD_RESULT = 0;
 557                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1));
 558                                         if (!MOD_RESULT)
 559                                         {
 560                                                 r = GiveHops(user,parameters[param++],chan,status);
 561                                         }
 562                                         else param++;
 563                                 }
 564                                 else
 565                                 {
 566                                         MOD_RESULT = 0;
 567                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1));
 568                                         if (!MOD_RESULT)
 569                                         {
 570                                                 r = TakeHops(user,parameters[param++],chan,status);
 571                                         }
 572                                         else param++;
 573                                 }
 574                                 if (r)
 575                                 {
 576                                         *outl++ = 'h';
 577                                         outpars[pc++] = r;
 578                                 }
 579                         break;
 580
 581
 582                         case 'v':
 583                                         if ((param >= pcnt)) break;
 584                                         r = NULL;
 585                                         if (mdir == 1)
 586                                         {
 587                                                 MOD_RESULT = 0;
 588                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1));
 589                                                 if (!MOD_RESULT)
 590                                                 {
 591                                                         r = GiveVoice(user,parameters[param++],chan,status);
 592                                                 }
 593                                                 else param++;
 594                                         }
 595                                         else
 596                                         {
 597                                                 MOD_RESULT = 0;
 598                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1));
 599                                                 if (!MOD_RESULT)
 600                                                 {
 601                                                         r = TakeVoice(user,parameters[param++],chan,status);
 602                                                 }
 603                                                 else param++;
 604                                         }
 605                                         if (r)
 606                                         {
 607                                                 *outl++ = 'v';
 608                                                 outpars[pc++] = r;
 609                                         }
 610                         break;
 611
 612                         case 'b':
 613                                 if ((param >= pcnt)) break;
 614                                 r = NULL;
 615                                 if (mdir == 1)
 616                                 {
 617                                         MOD_RESULT = 0;
 618                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1));
 619                                         if (!MOD_RESULT)
 620                                         {
 621                                                 r = AddBan(user,parameters[param++],chan,status);
 622                                         }
 623                                         else param++;
 624                                 }
 625                                 else
 626                                 {
 627                                         MOD_RESULT = 0;
 628                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1));
 629                                         if (!MOD_RESULT)
 630                                         {
 631                                                 r = TakeBan(user,parameters[param++],chan,status);
 632                                         }
 633                                         else param++;
 634                                 }
 635                                 if (r)
 636                                 {
 637                                         *outl++ = 'b';
 638                                         outpars[pc++] = parameters[param-1];
 639                                 }
 640                         break;
 641
 642
 643                         case 'k':
 644                                 if ((param >= pcnt))
 645                                         break;
 646
 647                                 if (mdir == 1)
 648                                 {
 649                                         if (k_set)
 650                                                 break;
 651
 652                                         if (previously_unset_k)
 653                                                 break;
 654                                         previously_set_k = true;
 655
 656                                         if (!chan->modes[CM_KEY])
 657                                         {
 658                                                 MOD_RESULT = 0;
 659                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1));
 660                                                 if (!MOD_RESULT)
 661                                                 {
 662                                                         *outl++ = 'k';
 663                                                         char key[MAXBUF];
 664                                                         strlcpy(key,parameters[param++],32);
 665                                                         outpars[pc++] = key;
 666                                                         strlcpy(chan->key,key,MAXBUF);
 667                                                         chan->modes[CM_KEY] = 1;
 668                                                         k_set = true;
 669                                                 }
 670                                                 else param++;
 671                                         }
 672                                 }
 673                                 else
 674                                 {
 675                                         /* checks on -k are case sensitive and only accurate to the
 676                                                    first 32 characters */
 677                                         if (previously_set_k)
 678                                                 break;
 679                                         previously_unset_k = true;
 680
 681                                         char key[MAXBUF];
 682                                         MOD_RESULT = 0;
 683                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 684                                         if (!MOD_RESULT)
 685                                         {
 686                                                 strlcpy(key,parameters[param++],32);
 687                                                 /* only allow -k if correct key given */
 688                                                 if (!strcmp(chan->key,key))
 689                                                 {
 690                                                         *outl++ = 'k';
 691                                                         *chan->key = 0;
 692                                                         chan->modes[CM_KEY] = 0;
 693                                                         outpars[pc++] = key;
 694                                                 }
 695                                         }
 696                                         else param++;
 697                                 }
 698                         break;
 699
 700                         case 'l':
 701                                 if (mdir == 0)
 702                                 {
 703                                         if (previously_set_l)
 704                                                 break;
 705                                         previously_unset_l = true;
 706                                         MOD_RESULT = 0;
 707                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 708                                         if (!MOD_RESULT)
 709                                         {
 710                                                 if (chan->modes[CM_LIMIT])
 711                                                 {
 712                                                         *outl++ = 'l';
 713                                                         chan->limit = 0;
 714                                                         chan->modes[CM_LIMIT] = 0;
 715                                                 }
 716                                         }
 717                                 }
 718
 719                                 if ((param >= pcnt)) break;
 720                                 if (mdir == 1)
 721                                 {
 722                                         if (l_set)
 723                                                 break;
 724                                         if (previously_unset_l)
 725                                                 break;
 726                                         previously_set_l = true;
 727                                         bool invalid = false;
 728                                         for (char* f = parameters[param]; *f; f++)
 729                                         {
 730                                                 if ((*f < '0') || (*f > '9'))
 731                                                 {
 732                                                         invalid = true;
 733                                                 }
 734                                         }
 735                                         /* If the limit is < 1, or the new limit is the current limit, dont allow */
 736                                         if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 737                                         {
 738                                                 invalid = true;
 739                                         }
 740
 741                                         if (invalid)
 742                                                 break;
 743
 744                                         MOD_RESULT = 0;
 745                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 746                                         if (!MOD_RESULT)
 747                                         {
 748
 749                                                 chan->limit = atoi(parameters[param]);
 750
 751                                                 // reported by mech: large values cause underflow
 752                                                 if (chan->limit < 0)
 753                                                         chan->limit = 0x7FFF;
 754                                         }
 755
 756                                         if (chan->limit)
 757                                         {
 758                                                 *outl++ = 'l';
 759                                                 chan->modes[CM_LIMIT] = 1;
 760                                                 outpars[pc++] = parameters[param++];
 761                                                 l_set = true;
 762                                         }
 763                                 }
 764                         break;
 765
 766                         case 'i':
 767                                 MOD_RESULT = 0;
 768                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 769                                 if (!MOD_RESULT)
 770                                 {
 771                                         if (mdir)
 772                                         {
 773                                                 if (!(chan->modes[CM_INVITEONLY])) *outl++ = 'i';
 774                                                 chan->modes[CM_INVITEONLY] = 1;
 775                                         }
 776                                         else
 777                                         {
 778                                                 if (chan->modes[CM_INVITEONLY]) *outl++ = 'i';
 779                                                 chan->modes[CM_INVITEONLY] = 0;
 780                                         }
 781                                 }
 782                         break;
 783
 784                         case 't':
 785                                 MOD_RESULT = 0;
 786                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 787                                 if (!MOD_RESULT)
 788                                 {
 789                                         if (mdir)
 790                                         {
 791                                                 if (!(chan->modes[CM_TOPICLOCK])) *outl++ = 't';
 792                                                 chan->modes[CM_TOPICLOCK] = 1;
 793                                         }
 794                                         else
 795                                         {
 796                                                 if (chan->modes[CM_TOPICLOCK]) *outl++ = 't';
 797                                                 chan->modes[CM_TOPICLOCK] = 0;
 798                                         }
 799                                 }
 800                         break;
 801
 802                         case 'n':
 803                                 MOD_RESULT = 0;
 804                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 805                                 if (!MOD_RESULT)
 806                                 {
 807                                         if (mdir)
 808                                         {
 809                                                 if (!(chan->modes[CM_NOEXTERNAL])) *outl++ = 'n';
 810                                                 chan->modes[CM_NOEXTERNAL] = 1;
 811                                         }
 812                                         else
 813                                         {
 814                                                 if (chan->modes[CM_NOEXTERNAL]) *outl++ = 'n';
 815                                                 chan->modes[CM_NOEXTERNAL] = 0;
 816                                         }
 817                                 }
 818                         break;
 819
 820                         case 'm':
 821                                 MOD_RESULT = 0;
 822                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 823                                 if (!MOD_RESULT)
 824                                 {
 825                                         if (mdir)
 826                                         {
 827                                                 if (!(chan->modes[CM_MODERATED])) *outl++ = 'm';
 828                                                 chan->modes[CM_MODERATED] = 1;
 829                                         }
 830                                         else
 831                                         {
 832                                                 if (chan->modes[CM_MODERATED]) *outl++ = 'm';
 833                                                 chan->modes[CM_MODERATED] = 0;
 834                                         }
 835                                 }
 836                         break;
 837
 838                         case 's':
 839                                 MOD_RESULT = 0;
 840                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 841                                 if (!MOD_RESULT)
 842                                 {
 843                                         if (mdir)
 844                                         {
 845                                                 if (!(chan->modes[CM_SECRET])) *outl++ = 's';
 846                                                 chan->modes[CM_SECRET] = 1;
 847                                                 if (chan->modes[CM_PRIVATE])
 848                                                 {
 849                                                         chan->modes[CM_PRIVATE] = 0;
 850                                                         if (mdir)
 851                                                         {
 852                                                                 *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
 853                                                         }
 854                                                 }
 855                                         }
 856                                         else
 857                                         {
 858                                                 if (chan->modes[CM_SECRET]) *outl++ = 's';
 859                                                 chan->modes[CM_SECRET] = 0;
 860                                         }
 861                                 }
 862                         break;
 863
 864                         case 'p':
 865                                 MOD_RESULT = 0;
 866                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
 867                                 if(!MOD_RESULT)
 868                                 {
 869                                         if(mdir)
 870                                         {
 871                                                 if(!(chan->modes[CM_PRIVATE]))
 872                                                         *outl++ = 'p';
 873
 874                                                 chan->modes[CM_PRIVATE] = 1;
 875
 876                                                 if(chan->modes[CM_SECRET])
 877                                                 {
 878                                                         chan->modes[CM_SECRET] = 0;
 879
 880                                                         *outl++ = '-';
 881                                                         *outl++ = 's';
 882                                                         *outl++ = '+';
 883                                                 }
 884                                         }
 885                                         else
 886                                         {
 887                                                 if(chan->modes[CM_PRIVATE])
 888                                                         *outl++ = 'p';
 889
 890                                                 chan->modes[CM_PRIVATE] = 0;
 891                                         }
 892                                 }
 893                                 break;
 894
 895                         default:
 896                                 string_list p;
 897                                 p.clear();
 898                                 bool x = chan->modes[*modechar-65];
 899                                 if ((!x && !mdir) || (x && mdir))
 900                                 {
 901                                         if (!ModeIsListMode(*modechar,MT_CHANNEL))
 902                                         {
 903                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
 904                                                 break;
 905                                         }
 906                                 }
 907                                 if (ModeDefined(*modechar,MT_CHANNEL))
 908                                 {
 909                                         /* A module has claimed this mode */
 910                                         if (param<pcnt)
 911                                         {
 912                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 913                                                 {
 914                                                         p.push_back(parameters[param]);
 915                                                 }
 916                                                 if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
 917                                                 {
 918                                                         p.push_back(parameters[param]);
 919                                                 }
 920                                         }
 921                                         bool handled = false;
 922                                         if (param>=pcnt)
 923                                         {
 924                                                 // we're supposed to have a parameter, but none was given... so dont handle the mode.
 925                                                 if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
 926                                                 {
 927                                                         log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
 928                                                         handled = true;
 929                                                         param++;
 930                                                 }
 931                                         }
 932                                         // BIG ASS IDIOTIC CODER WARNING!
 933                                         // Using OnRawMode on another modules mode's behavour
 934                                         // will confuse the crap out of admins! just because you CAN
 935                                         // do it, doesnt mean you SHOULD!
 936                                         MOD_RESULT = 0;
 937                                         std::string para = "";
 938                                         if (p.size())
 939                                                 para = p[0];
 940
 941                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
 942                                         if(!MOD_RESULT)
 943                                         {
 944                                                 for (int i = 0; i <= MODCOUNT; i++)
 945                                                 {
 946                                                         if (!handled)
 947                                                         {
 948                                                                 int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
 949                                                                 if (t != 0)
 950                                                                 {
 951                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
 952                                                                         if (ModeIsListMode(*modechar,MT_CHANNEL))
 953                                                                         {
 954                                                                                 if (t == -1)
 955                                                                                 {
 956                                                                                         //pc++;
 957                                                                                         param++;
 958                                                                                 }
 959                                                                                 else
 960                                                                                 {
 961                                                                                         if (param < pcnt)
 962                                                                                         {
 963                                                                                                 *outl++ = *modechar;
 964                                                                                         }
 965                                                                                         outpars[pc++] = parameters[param++];
 966                                                                                 }
 967                                                                         }
 968                                                                         else
 969                                                                         {
 970                                                                                 *outl++ = *modechar;
 971                                                                                 chan->SetCustomMode(*modechar,mdir);
 972                                                                                 // include parameters in output if mode has them
 973                                                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 974                                                                                 {
 975                                                                                         if (param < pcnt)
 976                                                                                         {
 977                                                                                                 chan->SetCustomModeParam(*modechar,parameters[param],mdir);
 978                                                                                                 outpars[pc++] = parameters[param++];
 979                                                                                         }
 980                                                                                 }
 981                                                                         }
 982                                                                         // break, because only one module can handle the mode.
 983                                                                         handled = true;
 984                                                                 }
 985                                                         }
 986                                                 }
 987                                         }
 988                                 }
 989                                 else
 990                                 {
 991                                         WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
 992                                 }
 993                         break;
 994                 }
 995         }
 996
 997         /* Null terminate it now we're done */
 998         *outl = 0;
 999
1000
1001         /************ Fast, but confusing string tidying ************/
1002         outl = outlist;
1003         while (*outl && (*outl < 'A'))
1004                 outl++;
1005         /* outl now points to the first mode character after +'s and -'s */
1006         outl--;
1007         /* Now points at first mode-modifier + or - symbol */
1008         char* trim = outl;
1009         /* Now we tidy off any trailing -'s etc */
1010         while (*trim++);
1011         trim--;
1012         while ((*--trim == '+') || (*trim == '-'))
1013                 *trim = 0;
1014         /************ Done wih the string tidy functions ************/
1015
1016
1017         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1018         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1019         {
1020                 for (ptr = 0; ptr < pc; ptr++)
1021                 {
1022                         charlcat(outl,' ',MAXBUF);
1023                         strlcat(outl,outpars[ptr],MAXBUF-1);
1024                 }
1025                 if (local)
1026                 {
1027                         log(DEBUG,"Local mode change");
1028                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1029                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1030                 }
1031                 else
1032                 {
1033                         if (servermode)
1034                         {
1035                                 if (!silent)
1036                                 {
1037                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1038                                 }
1039
1040                         }
1041                         else
1042                         {
1043                                 if (!silent)
1044                                 {
1045                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1046                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1047                                 }
1048                         }
1049                 }
1050         }
1051 }
1052
1053 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1054
1055 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1056 {
1057         bool sourceoper = (strchr(sourcemodes,'o') != NULL);
1058         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1059         // Servers can +o and -o arbitrarily
1060         if ((serveroverride == true) && (umode == 'o'))
1061         {
1062                 return true;
1063         }
1064         // RFC1459 specified modes
1065         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1066         {
1067                 /* umode allowed by RFC1459 scemantics */
1068                 return true;
1069         }
1070
1071         /* user may not +o themselves or others, but an oper may de-oper other opers or themselves */
1072         if (sourceoper && !adding)
1073         {
1074                 return true;
1075         }
1076         else if (umode == 'o')
1077         {
1078                 /* Bad oper, bad bad! */
1079                 return false;
1080         }
1081
1082         /* process any module-defined modes that need oper */
1083         if ((ModeDefinedOper(umode,MT_CLIENT)) && (sourceoper))
1084         {
1085                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1086                 return true;
1087         }
1088         else if (ModeDefined(umode,MT_CLIENT))
1089         {
1090                 // process any module-defined modes that don't need oper
1091                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1092                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!sourceoper))
1093                 {
1094                         // no, this mode needs oper, and this user 'aint got what it takes!
1095                         return false;
1096                 }
1097                 return true;
1098         }
1099
1100         // anything else - return false.
1101         log(DEBUG,"umode %c not known by any ruleset",umode);
1102         return false;
1103 }
1104
1105 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1106 {
1107         userrec* s2;
1108         bool faked = false;
1109         if (!source)
1110         {
1111                 s2 = new userrec;
1112                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1113                 *s2->modes = 'o';
1114                 *(s2->modes+1) = 0;
1115                 s2->fd = -1;
1116                 source = s2;
1117                 faked = true;
1118         }
1119         string_list p;
1120         p.clear();
1121         if (ModeDefined(umode,MT_CLIENT))
1122         {
1123                 for (int i = 0; i <= MODCOUNT; i++)
1124                 {
1125                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1126                         {
1127                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1128                                 return true;
1129                         }
1130                 }
1131                 log(DEBUG,"No module claims umode %c",umode);
1132                 if (faked)
1133                 {
1134                         delete s2;
1135                         source = NULL;
1136                 }
1137                 return false;
1138         }
1139         else
1140         {
1141                 if (faked)
1142                 {
1143                         delete s2;
1144                         source = NULL;
1145                 }
1146                 return false;
1147         }
1148 }
1149
1150 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1151 {
1152         chanrec* chan;
1153         userrec* dest = Find(parameters[0]);
1154         int MOD_RESULT;
1155         int can_change;
1156         int direction = 1;
1157         char outpars[MAXBUF];
1158         bool next_ok = true;
1159
1160         if (!user)
1161                 return;
1162
1163         if ((dest) && (pcnt == 1))
1164         {
1165                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1166                 return;
1167         }
1168         else if ((dest) && (pcnt > 1))
1169         {
1170                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1171                 parameters[1] = (char*)tidied.c_str();
1172
1173                 char dmodes[MAXBUF];
1174                 strlcpy(dmodes,dest->modes,MAXMODES);
1175                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1176
1177                 can_change = 0;
1178                 if (user != dest)
1179                 {
1180                         if ((*user->oper) || (is_uline(user->server)))
1181                         {
1182                                 can_change = 1;
1183                         }
1184                 }
1185                 else
1186                 {
1187                         can_change = 1;
1188                 }
1189                 if (!can_change)
1190                 {
1191                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1192                         return;
1193                 }
1194
1195                 outpars[0] = *parameters[1];
1196                 outpars[1] = 0;
1197                 direction = (*parameters[1] == '+');
1198
1199                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1200                         return;
1201
1202                 for (char* i = parameters[1]; *i; i++)
1203                 {
1204                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1205                                 next_ok = true;
1206
1207                         switch (*i)
1208                         {
1209                                 case ' ':
1210                                 continue;
1211
1212                                 case '+':
1213                                         if ((direction != 1) && (next_ok))
1214                                         {
1215                                                 charlcat(outpars,'+',MAXBUF);
1216                                                 next_ok = false;
1217                                         }
1218                                         direction = 1;
1219                                 break;
1220
1221                                 case '-':
1222                                         if ((direction != 0) && (next_ok))
1223                                         {
1224                                                 charlcat(outpars,'-',MAXBUF);
1225                                                 next_ok = false;
1226                                         }
1227                                         direction = 0;
1228                                 break;
1229
1230                                 default:
1231                                         can_change = 0;
1232                                         if (*user->oper)
1233                                         {
1234                                                 can_change = 1;
1235                                         }
1236                                         else
1237                                         {
1238                                                 if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1239                                                 {
1240                                                         can_change = 1;
1241                                                 }
1242                                         }
1243                                         if (can_change)
1244                                         {
1245                                                 if (direction == 1)
1246                                                 {
1247                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1248                                                         {
1249                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1250                                                                 {
1251                                                                         charlcat(dmodes,*i,53);
1252                                                                         charlcat(outpars,*i,MAXMODES);
1253                                                                         switch (*i)
1254                                                                         {
1255                                                                                 case 'o':
1256                                                                                         FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1257                                                                                 break;
1258                                                                                 case 'i':
1259                                                                                         dest->modebits |= UM_INVISIBLE;
1260                                                                                 break;
1261                                                                                 case 's':
1262                                                                                         dest->modebits |= UM_SERVERNOTICE;
1263                                                                                 break;
1264                                                                                 case 'w':
1265                                                                                         dest->modebits |= UM_WALLOPS;
1266                                                                                 break;
1267                                                                                 default:
1268                                                                                 break;
1269                                                                         }
1270                                                                 }
1271                                                         }
1272                                                 }
1273                                                 else
1274                                                 {
1275                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1276                                                         {
1277                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1278                                                                 {
1279                                                                         charlcat(outpars,*i,MAXMODES);
1280                                                                         charremove(dmodes,*i);
1281                                                                         switch (*i)
1282                                                                         {
1283                                                                                 case 'o':
1284                                                                                         *dest->oper = 0;
1285                                                                                         DeleteOper(dest);
1286                                                                                 break;
1287                                                                                 case 'i':
1288                                                                                         dest->modebits &= ~UM_INVISIBLE;
1289                                                                                 break;
1290                                                                                 case 's':
1291                                                                                         dest->modebits &= ~UM_SERVERNOTICE;
1292                                                                                 break;
1293                                                                                 case 'w':
1294                                                                                         dest->modebits &= ~UM_WALLOPS;
1295                                                                                 break;
1296                                                                                 default:
1297                                                                                 break;
1298                                                                         }
1299                                                                 }
1300                                                         }
1301                                                 }
1302                                         }
1303                                 break;
1304                         }
1305                 }
1306                 if (*outpars)
1307                 {
1308                         char b[MAXBUF];
1309                         char* z = b;
1310
1311                         for (char* i = outpars; *i;)
1312                         {
1313                                 *z++ = *i++;
1314                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1315                                 {
1316                                         // someones playing silly buggers and trying
1317                                         // to put a +- or -+ into the line...
1318                                         i++;
1319                                 }
1320                                 if (!*(i+1))
1321                                 {
1322                                         // Someone's trying to make the last character in
1323                                         // the line be a + or - symbol.
1324                                         if ((*i == '-') || (*i == '+'))
1325                                         {
1326                                                 i++;
1327                                         }
1328                                 }
1329                         }
1330                         *z = 0;
1331
1332                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1333                         {
1334                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1335                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1336                         }
1337
1338                         log(DEBUG,"Stripped mode line");
1339                         log(DEBUG,"Line dest is now %s",dmodes);
1340                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1341
1342                 }
1343
1344                 return;
1345         }
1346         else
1347         {
1348                 chan = FindChan(parameters[0]);
1349                 if(chan)
1350                 {
1351                         if (pcnt == 1)
1352                         {
1353                                 /* just /modes #channel */
1354                                 WriteServ(user->fd,"324 %s %s +%s",user->nick, chan->name, chanmodes(chan, chan->HasUser(user)));
1355                                 WriteServ(user->fd,"329 %s %s %d", user->nick, chan->name, chan->created);
1356                                 return;
1357                         }
1358                         else if (pcnt == 2)
1359                         {
1360                                 char* mode = parameters[1];
1361
1362                                 MOD_RESULT = 0;
1363
1364                                 if (*mode == '+')
1365                                         mode++;
1366
1367                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *mode, "", false, 0));
1368                                 if(!MOD_RESULT)
1369                                 {
1370                                         if (*mode == 'b')
1371                                         {
1372                                                 for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
1373                                                 {
1374                                                         WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, chan->name, i->data, i->set_by, i->set_time);
1375                                                 }
1376                                                 WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, chan->name);
1377                                                 return;
1378                                         }
1379
1380                                         if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1381                                         {
1382                                                 // list of items for an extmode
1383                                                 log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1384                                                 FOREACH_MOD(I_OnSendList,OnSendList(user,chan,*mode));
1385                                                 return;
1386                                         }
1387                                 }
1388                         }
1389
1390                         if ((IS_LOCAL(user)) && (!is_uline(user->server)) && (!chan->HasUser(user)))
1391                         {
1392                                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, chan->name);
1393                                 return;
1394                         }
1395
1396                         MOD_RESULT = 0;
1397                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, chan, AC_GENERAL_MODE));
1398
1399                         if(MOD_RESULT == ACR_DENY)
1400                                 return;
1401
1402                         if(MOD_RESULT == ACR_DEFAULT)
1403                         {
1404                                 if ((IS_LOCAL(user)) && (cstatus(user,chan) < STATUS_HOP))
1405                                 {
1406                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
1407                                         return;
1408                                 }
1409                         }
1410
1411                         ServerInstance->ModeGrok->ProcessModes(parameters,user,chan,cstatus(user,chan),pcnt,false,false,false);
1412                 }
1413                 else
1414                 {
1415                         WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1416                 }
1417         }
1418 }
1419
1420
1421
1422
1423 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1424 {
1425         chanrec* Ptr;
1426         userrec* dest = Find(parameters[0]);
1427         int can_change;
1428         int direction = 1;
1429         char outpars[MAXBUF];
1430         bool next_ok = true;
1431
1432         if ((dest) && (pcnt > 1))
1433         {
1434                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1435                 parameters[1] = (char*)tidied.c_str();
1436
1437                 char dmodes[MAXBUF];
1438                 strlcpy(dmodes,dest->modes,MAXBUF);
1439
1440                 outpars[0] = *parameters[1];
1441                 outpars[1] = 0;
1442                 direction = (*parameters[1] == '+');
1443
1444                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1445                         return;
1446
1447                 for (char* i = parameters[1]; *i; i++)
1448                 {
1449                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1450                                 next_ok = true;
1451
1452                         switch (*i)
1453                         {
1454                                 case ' ':
1455                                 continue;
1456
1457                                 case '+':
1458                                         if ((direction != 1) && (next_ok))
1459                                         {
1460                                                 next_ok = false;
1461                                                 charlcat(outpars,'+',MAXBUF);
1462                                         }
1463                                         direction = 1;
1464                                 break;
1465
1466                                 case '-':
1467                                         if ((direction != 0) && (next_ok))
1468                                         {
1469                                                 next_ok = false;
1470                                                 charlcat(outpars,'-',MAXBUF);
1471                                         }
1472                                         direction = 0;
1473                                 break;
1474
1475                                 default:
1476                                         log(DEBUG,"begin mode processing entry");
1477                                         can_change = 1;
1478                                         if (can_change)
1479                                         {
1480                                                 if (direction == 1)
1481                                                 {
1482                                                         log(DEBUG,"umode %c being added",*i);
1483                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1484                                                         {
1485                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1486                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1487                                                                 {
1488                                                                         charlcat(dmodes,*i,MAXBUF);
1489                                                                         charlcat(outpars,*i,53);
1490                                                                         switch (*i)
1491                                                                         {
1492                                                                                 case 'i':
1493                                                                                         dest->modebits |= UM_INVISIBLE;
1494                                                                                 break;
1495                                                                                 case 's':
1496                                                                                         dest->modebits |= UM_SERVERNOTICE;
1497                                                                                 break;
1498                                                                                 case 'w':
1499                                                                                         dest->modebits |= UM_WALLOPS;
1500                                                                                 break;
1501                                                                                 default:
1502                                                                                 break;
1503                                                                         }
1504                                                                 }
1505                                                         }
1506                                                 }
1507                                                 else
1508                                                 {
1509                                                         // can only remove a mode they already have
1510                                                         log(DEBUG,"umode %c being removed",*i);
1511                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1512                                                         {
1513                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1514                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1515                                                                 {
1516                                                                         charlcat(outpars,*i,MAXBUF);
1517                                                                         charremove(dmodes,*i);
1518                                                                         switch (*i)
1519                                                                         {
1520                                                                                 case 'i':
1521                                                                                         dest->modebits &= ~UM_INVISIBLE;
1522                                                                                 break;
1523                                                                                 case 's':
1524                                                                                         dest->modebits &= ~UM_SERVERNOTICE;
1525                                                                                 break;
1526                                                                                 case 'w':
1527                                                                                         dest->modebits &= ~UM_WALLOPS;
1528                                                                                 break;
1529                                                                                 default:
1530                                                                                 break;
1531                                                                         }
1532                                                                 }
1533                                                         }
1534                                                 }
1535                                         }
1536                                 break;
1537                         }
1538                 }
1539                 if (*outpars)
1540                 {
1541                         char b[MAXBUF];
1542                         char* z = b;
1543
1544                         for (char* i = outpars; *i;)
1545                         {
1546                                 *z++ = *i++;
1547                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1548                                 {
1549                                         // someones playing silly buggers and trying
1550                                         // to put a +- or -+ into the line...
1551                                         i++;
1552                                 }
1553                                 if (!*(i+1))
1554                                 {
1555                                         // Someone's trying to make the last character in
1556                                         // the line be a + or - symbol.
1557                                         if ((*i == '-') || (*i == '+'))
1558                                         {
1559                                                 i++;
1560                                         }
1561                                 }
1562                         }
1563                         *z = 0;
1564
1565                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1566                         {
1567                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1568                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1569                         }
1570
1571                         log(DEBUG,"Stripped mode line");
1572                         log(DEBUG,"Line dest is now %s",dmodes);
1573                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1574
1575                 }
1576
1577                 return;
1578         }
1579
1580         Ptr = FindChan(parameters[0]);
1581         if (Ptr)
1582         {
1583                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1584         }
1585         else
1586         {
1587                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1588         }
1589 }