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 "inspircd_io.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->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                                                         k_set = true;
 668                                                 }
 669                                                 else param++;
 670                                         }
 671                                 }
 672                                 else
 673                                 {
 674                                         /* checks on -k are case sensitive and only accurate to the
 675                                                    first 32 characters */
 676                                         if (previously_set_k)
 677                                                 break;
 678                                         previously_unset_k = true;
 679
 680                                         char key[MAXBUF];
 681                                         MOD_RESULT = 0;
 682                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 683                                         if (!MOD_RESULT)
 684                                         {
 685                                                 strlcpy(key,parameters[param++],32);
 686                                                 /* only allow -k if correct key given */
 687                                                 if (!strcmp(chan->key,key))
 688                                                 {
 689                                                         *outl++ = 'k';
 690                                                         *chan->key = 0;
 691                                                         outpars[pc++] = key;
 692                                                 }
 693                                         }
 694                                         else param++;
 695                                 }
 696                         break;
 697
 698                         case 'l':
 699                                 if (mdir == 0)
 700                                 {
 701                                         if (previously_set_l)
 702                                                 break;
 703                                         previously_unset_l = true;
 704                                         MOD_RESULT = 0;
 705                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 706                                         if (!MOD_RESULT)
 707                                         {
 708                                                 if (chan->limit)
 709                                                 {
 710                                                         *outl++ = 'l';
 711                                                         chan->limit = 0;
 712                                                 }
 713                                         }
 714                                 }
 715
 716                                 if ((param >= pcnt)) break;
 717                                 if (mdir == 1)
 718                                 {
 719                                         if (l_set)
 720                                                 break;
 721                                         if (previously_unset_l)
 722                                                 break;
 723                                         previously_set_l = true;
 724                                         bool invalid = false;
 725                                         for (char* f = parameters[param]; *f; f++)
 726                                         {
 727                                                 if ((*f < '0') || (*f > '9'))
 728                                                 {
 729                                                         invalid = true;
 730                                                 }
 731                                         }
 732                                         /* If the limit is < 1, or the new limit is the current limit, dont allow */
 733                                         if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 734                                         {
 735                                                 invalid = true;
 736                                         }
 737
 738                                         if (invalid)
 739                                                 break;
 740
 741                                         MOD_RESULT = 0;
 742                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 743                                         if (!MOD_RESULT)
 744                                         {
 745
 746                                                 chan->limit = atoi(parameters[param]);
 747
 748                                                 // reported by mech: large values cause underflow
 749                                                 if (chan->limit < 0)
 750                                                         chan->limit = 0x7FFF;
 751                                         }
 752
 753                                         if (chan->limit)
 754                                         {
 755                                                 *outl++ = 'l';
 756                                                 outpars[pc++] = parameters[param++];
 757                                                 l_set = true;
 758                                         }
 759                                 }
 760                         break;
 761
 762                         case 'i':
 763                                 MOD_RESULT = 0;
 764                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 765                                 if (!MOD_RESULT)
 766                                 {
 767                                         if (mdir)
 768                                         {
 769                                                 if (!(chan->binarymodes & CM_INVITEONLY)) *outl++ = 'i';
 770                                                 chan->binarymodes |= CM_INVITEONLY;
 771                                         }
 772                                         else
 773                                         {
 774                                                 if (chan->binarymodes & CM_INVITEONLY) *outl++ = 'i';
 775                                                 chan->binarymodes &= ~CM_INVITEONLY;
 776                                         }
 777                                 }
 778                         break;
 779
 780                         case 't':
 781                                 MOD_RESULT = 0;
 782                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 783                                 if (!MOD_RESULT)
 784                                 {
 785                                         if (mdir)
 786                                         {
 787                                                 if (!(chan->binarymodes & CM_TOPICLOCK)) *outl++ = 't';
 788                                                 chan->binarymodes |= CM_TOPICLOCK;
 789                                         }
 790                                         else
 791                                         {
 792                                                 if (chan->binarymodes & CM_TOPICLOCK) *outl++ = 't';
 793                                                 chan->binarymodes &= ~CM_TOPICLOCK;
 794                                         }
 795                                 }
 796                         break;
 797
 798                         case 'n':
 799                                 MOD_RESULT = 0;
 800                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 801                                 if (!MOD_RESULT)
 802                                 {
 803                                         if (mdir)
 804                                         {
 805                                                 if (!(chan->binarymodes & CM_NOEXTERNAL)) *outl++ = 'n';
 806                                                 chan->binarymodes |= CM_NOEXTERNAL;
 807                                         }
 808                                         else
 809                                         {
 810                                                 if (chan->binarymodes & CM_NOEXTERNAL) *outl++ = 'n';
 811                                                 chan->binarymodes &= ~CM_NOEXTERNAL;
 812                                         }
 813                                 }
 814                         break;
 815
 816                         case 'm':
 817                                 MOD_RESULT = 0;
 818                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 819                                 if (!MOD_RESULT)
 820                                 {
 821                                         if (mdir)
 822                                         {
 823                                                 if (!(chan->binarymodes & CM_MODERATED)) *outl++ = 'm';
 824                                                 chan->binarymodes |= CM_MODERATED;
 825                                         }
 826                                         else
 827                                         {
 828                                                 if (chan->binarymodes & CM_MODERATED) *outl++ = 'm';
 829                                                 chan->binarymodes &= ~CM_MODERATED;
 830                                         }
 831                                 }
 832                         break;
 833
 834                         case 's':
 835                                 MOD_RESULT = 0;
 836                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 837                                 if (!MOD_RESULT)
 838                                 {
 839                                         if (mdir)
 840                                         {
 841                                                 if (!(chan->binarymodes & CM_SECRET)) *outl++ = 's';
 842                                                 chan->binarymodes |= CM_SECRET;
 843                                                 if (chan->binarymodes & CM_PRIVATE)
 844                                                 {
 845                                                         chan->binarymodes &= ~CM_PRIVATE;
 846                                                         if (mdir)
 847                                                         {
 848                                                                 *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
 849                                                         }
 850                                                 }
 851                                         }
 852                                         else
 853                                         {
 854                                                 if (chan->binarymodes & CM_SECRET) *outl++ = 's';
 855                                                 chan->binarymodes &= ~CM_SECRET;
 856                                         }
 857                                 }
 858                         break;
 859
 860                         case 'p':
 861                                 MOD_RESULT = 0;
 862                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
 863                                 if(!MOD_RESULT)
 864                                 {
 865                                         if(mdir)
 866                                         {
 867                                                 if(!(chan->binarymodes & CM_PRIVATE))
 868                                                         *outl++ = 'p';
 869
 870                                                 chan->binarymodes |= CM_PRIVATE;
 871
 872                                                 if(chan->binarymodes & CM_SECRET)
 873                                                 {
 874                                                         chan->binarymodes &= ~CM_SECRET;
 875
 876                                                         *outl++ = '-';
 877                                                         *outl++ = 's';
 878                                                         *outl++ = '+';
 879                                                 }
 880                                         }
 881                                         else
 882                                         {
 883                                                 if(chan->binarymodes & CM_PRIVATE)
 884                                                         *outl++ = 'p';
 885
 886                                                 chan->binarymodes &= ~CM_PRIVATE;
 887                                         }
 888                                 }
 889                                 break;
 890
 891                         default:
 892                                 string_list p;
 893                                 p.clear();
 894                                 bool x = chan->custom_modes[*modechar-65];
 895                                 if ((!x && !mdir) || (x && mdir))
 896                                 {
 897                                         if (!ModeIsListMode(*modechar,MT_CHANNEL))
 898                                         {
 899                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
 900                                                 break;
 901                                         }
 902                                 }
 903                                 if (ModeDefined(*modechar,MT_CHANNEL))
 904                                 {
 905                                         /* A module has claimed this mode */
 906                                         if (param<pcnt)
 907                                         {
 908                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 909                                                 {
 910                                                         p.push_back(parameters[param]);
 911                                                 }
 912                                                 if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
 913                                                 {
 914                                                         p.push_back(parameters[param]);
 915                                                 }
 916                                         }
 917                                         bool handled = false;
 918                                         if (param>=pcnt)
 919                                         {
 920                                                 // we're supposed to have a parameter, but none was given... so dont handle the mode.
 921                                                 if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
 922                                                 {
 923                                                         log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
 924                                                         handled = true;
 925                                                         param++;
 926                                                 }
 927                                         }
 928                                         // BIG ASS IDIOTIC CODER WARNING!
 929                                         // Using OnRawMode on another modules mode's behavour
 930                                         // will confuse the crap out of admins! just because you CAN
 931                                         // do it, doesnt mean you SHOULD!
 932                                         MOD_RESULT = 0;
 933                                         std::string para = "";
 934                                         if (p.size())
 935                                                 para = p[0];
 936
 937                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
 938                                         if(!MOD_RESULT)
 939                                         {
 940                                                 for (int i = 0; i <= MODCOUNT; i++)
 941                                                 {
 942                                                         if (!handled)
 943                                                         {
 944                                                                 int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
 945                                                                 if (t != 0)
 946                                                                 {
 947                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
 948                                                                         if (ModeIsListMode(*modechar,MT_CHANNEL))
 949                                                                         {
 950                                                                                 if (t == -1)
 951                                                                                 {
 952                                                                                         //pc++;
 953                                                                                         param++;
 954                                                                                 }
 955                                                                                 else
 956                                                                                 {
 957                                                                                         if (param < pcnt)
 958                                                                                         {
 959                                                                                                 *outl++ = *modechar;
 960                                                                                         }
 961                                                                                         outpars[pc++] = parameters[param++];
 962                                                                                 }
 963                                                                         }
 964                                                                         else
 965                                                                         {
 966                                                                                 *outl++ = *modechar;
 967                                                                                 chan->SetCustomMode(*modechar,mdir);
 968                                                                                 // include parameters in output if mode has them
 969                                                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 970                                                                                 {
 971                                                                                         if (param < pcnt)
 972                                                                                         {
 973                                                                                                 chan->SetCustomModeParam(*modechar,parameters[param],mdir);
 974                                                                                                 outpars[pc++] = parameters[param++];
 975                                                                                         }
 976                                                                                 }
 977                                                                         }
 978                                                                         // break, because only one module can handle the mode.
 979                                                                         handled = true;
 980                                                                 }
 981                                                         }
 982                                                 }
 983                                         }
 984                                 }
 985                                 else
 986                                 {
 987                                         WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
 988                                 }
 989                         break;
 990                 }
 991         }
 992
 993         /* Null terminate it now we're done */
 994         *outl = 0;
 995
 996
 997         /************ Fast, but confusing string tidying ************/
 998         outl = outlist;
 999         while (*outl && (*outl < 'A'))
1000                 outl++;
1001         /* outl now points to the first mode character after +'s and -'s */
1002         outl--;
1003         /* Now points at first mode-modifier + or - symbol */
1004         char* trim = outl;
1005         /* Now we tidy off any trailing -'s etc */
1006         while (*trim++);
1007         trim--;
1008         while ((*--trim == '+') || (*trim == '-'))
1009                 *trim = 0;
1010         /************ Done wih the string tidy functions ************/
1011
1012
1013         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1014         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1015         {
1016                 for (ptr = 0; ptr < pc; ptr++)
1017                 {
1018                         charlcat(outl,' ',MAXBUF);
1019                         strlcat(outl,outpars[ptr],MAXBUF-1);
1020                 }
1021                 if (local)
1022                 {
1023                         log(DEBUG,"Local mode change");
1024                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1025                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1026                 }
1027                 else
1028                 {
1029                         if (servermode)
1030                         {
1031                                 if (!silent)
1032                                 {
1033                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1034                                 }
1035
1036                         }
1037                         else
1038                         {
1039                                 if (!silent)
1040                                 {
1041                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1042                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1043                                 }
1044                         }
1045                 }
1046         }
1047 }
1048
1049 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1050
1051 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1052 {
1053         bool sourceoper = (strchr(sourcemodes,'o') != NULL);
1054         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1055         // Servers can +o and -o arbitrarily
1056         if ((serveroverride == true) && (umode == 'o'))
1057         {
1058                 return true;
1059         }
1060         // RFC1459 specified modes
1061         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1062         {
1063                 /* umode allowed by RFC1459 scemantics */
1064                 return true;
1065         }
1066
1067         /* user may not +o themselves or others, but an oper may de-oper other opers or themselves */
1068         if (sourceoper && !adding)
1069         {
1070                 return true;
1071         }
1072         else if (umode == 'o')
1073         {
1074                 /* Bad oper, bad bad! */
1075                 return false;
1076         }
1077
1078         /* process any module-defined modes that need oper */
1079         if ((ModeDefinedOper(umode,MT_CLIENT)) && (sourceoper))
1080         {
1081                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1082                 return true;
1083         }
1084         else if (ModeDefined(umode,MT_CLIENT))
1085         {
1086                 // process any module-defined modes that don't need oper
1087                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1088                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!sourceoper))
1089                 {
1090                         // no, this mode needs oper, and this user 'aint got what it takes!
1091                         return false;
1092                 }
1093                 return true;
1094         }
1095
1096         // anything else - return false.
1097         log(DEBUG,"umode %c not known by any ruleset",umode);
1098         return false;
1099 }
1100
1101 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1102 {
1103         userrec* s2;
1104         bool faked = false;
1105         if (!source)
1106         {
1107                 s2 = new userrec;
1108                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1109                 *s2->modes = 'o';
1110                 *(s2->modes+1) = 0;
1111                 s2->fd = -1;
1112                 source = s2;
1113                 faked = true;
1114         }
1115         string_list p;
1116         p.clear();
1117         if (ModeDefined(umode,MT_CLIENT))
1118         {
1119                 for (int i = 0; i <= MODCOUNT; i++)
1120                 {
1121                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1122                         {
1123                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1124                                 return true;
1125                         }
1126                 }
1127                 log(DEBUG,"No module claims umode %c",umode);
1128                 if (faked)
1129                 {
1130                         delete s2;
1131                         source = NULL;
1132                 }
1133                 return false;
1134         }
1135         else
1136         {
1137                 if (faked)
1138                 {
1139                         delete s2;
1140                         source = NULL;
1141                 }
1142                 return false;
1143         }
1144 }
1145
1146 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1147 {
1148         chanrec* chan;
1149         userrec* dest = Find(parameters[0]);
1150         int MOD_RESULT;
1151         int can_change;
1152         int direction = 1;
1153         char outpars[MAXBUF];
1154         bool next_ok = true;
1155
1156         if (!user)
1157                 return;
1158
1159         if ((dest) && (pcnt == 1))
1160         {
1161                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1162                 return;
1163         }
1164         else if ((dest) && (pcnt > 1))
1165         {
1166                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1167                 parameters[1] = (char*)tidied.c_str();
1168
1169                 char dmodes[MAXBUF];
1170                 strlcpy(dmodes,dest->modes,MAXMODES);
1171                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1172
1173                 can_change = 0;
1174                 if (user != dest)
1175                 {
1176                         if ((*user->oper) || (is_uline(user->server)))
1177                         {
1178                                 can_change = 1;
1179                         }
1180                 }
1181                 else
1182                 {
1183                         can_change = 1;
1184                 }
1185                 if (!can_change)
1186                 {
1187                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1188                         return;
1189                 }
1190
1191                 outpars[0] = *parameters[1];
1192                 outpars[1] = 0;
1193                 direction = (*parameters[1] == '+');
1194
1195                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1196                         return;
1197
1198                 for (char* i = parameters[1]; *i; i++)
1199                 {
1200                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1201                                 next_ok = true;
1202
1203                         switch (*i)
1204                         {
1205                                 case ' ':
1206                                 continue;
1207
1208                                 case '+':
1209                                         if ((direction != 1) && (next_ok))
1210                                         {
1211                                                 charlcat(outpars,'+',MAXBUF);
1212                                                 next_ok = false;
1213                                         }
1214                                         direction = 1;
1215                                 break;
1216
1217                                 case '-':
1218                                         if ((direction != 0) && (next_ok))
1219                                         {
1220                                                 charlcat(outpars,'-',MAXBUF);
1221                                                 next_ok = false;
1222                                         }
1223                                         direction = 0;
1224                                 break;
1225
1226                                 default:
1227                                         can_change = 0;
1228                                         if (*user->oper)
1229                                         {
1230                                                 can_change = 1;
1231                                         }
1232                                         else
1233                                         {
1234                                                 if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1235                                                 {
1236                                                         can_change = 1;
1237                                                 }
1238                                         }
1239                                         if (can_change)
1240                                         {
1241                                                 if (direction == 1)
1242                                                 {
1243                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1244                                                         {
1245                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1246                                                                 {
1247                                                                         charlcat(dmodes,*i,53);
1248                                                                         charlcat(outpars,*i,MAXMODES);
1249                                                                         switch (*i)
1250                                                                         {
1251                                                                                 case 'o':
1252                                                                                         FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1253                                                                                 break;
1254                                                                                 case 'i':
1255                                                                                         dest->modebits |= UM_INVISIBLE;
1256                                                                                 break;
1257                                                                                 case 's':
1258                                                                                         dest->modebits |= UM_SERVERNOTICE;
1259                                                                                 break;
1260                                                                                 case 'w':
1261                                                                                         dest->modebits |= UM_WALLOPS;
1262                                                                                 break;
1263                                                                                 default:
1264                                                                                 break;
1265                                                                         }
1266                                                                 }
1267                                                         }
1268                                                 }
1269                                                 else
1270                                                 {
1271                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1272                                                         {
1273                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1274                                                                 {
1275                                                                         charlcat(outpars,*i,MAXMODES);
1276                                                                         charremove(dmodes,*i);
1277                                                                         switch (*i)
1278                                                                         {
1279                                                                                 case 'o':
1280                                                                                         *dest->oper = 0;
1281                                                                                         DeleteOper(dest);
1282                                                                                 break;
1283                                                                                 case 'i':
1284                                                                                         dest->modebits &= ~UM_INVISIBLE;
1285                                                                                 break;
1286                                                                                 case 's':
1287                                                                                         dest->modebits &= ~UM_SERVERNOTICE;
1288                                                                                 break;
1289                                                                                 case 'w':
1290                                                                                         dest->modebits &= ~UM_WALLOPS;
1291                                                                                 break;
1292                                                                                 default:
1293                                                                                 break;
1294                                                                         }
1295                                                                 }
1296                                                         }
1297                                                 }
1298                                         }
1299                                 break;
1300                         }
1301                 }
1302                 if (*outpars)
1303                 {
1304                         char b[MAXBUF];
1305                         char* z = b;
1306
1307                         for (char* i = outpars; *i;)
1308                         {
1309                                 *z++ = *i++;
1310                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1311                                 {
1312                                         // someones playing silly buggers and trying
1313                                         // to put a +- or -+ into the line...
1314                                         i++;
1315                                 }
1316                                 if (!*(i+1))
1317                                 {
1318                                         // Someone's trying to make the last character in
1319                                         // the line be a + or - symbol.
1320                                         if ((*i == '-') || (*i == '+'))
1321                                         {
1322                                                 i++;
1323                                         }
1324                                 }
1325                         }
1326                         *z = 0;
1327
1328                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1329                         {
1330                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1331                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1332                         }
1333
1334                         log(DEBUG,"Stripped mode line");
1335                         log(DEBUG,"Line dest is now %s",dmodes);
1336                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1337
1338                 }
1339
1340                 return;
1341         }
1342         else
1343         {
1344                 chan = FindChan(parameters[0]);
1345                 if(chan)
1346                 {
1347                         if (pcnt == 1)
1348                         {
1349                                 /* just /modes #channel */
1350                                 WriteServ(user->fd,"324 %s %s +%s",user->nick, chan->name, chanmodes(chan, chan->HasUser(user)));
1351                                 WriteServ(user->fd,"329 %s %s %d", user->nick, chan->name, chan->created);
1352                                 return;
1353                         }
1354                         else if (pcnt == 2)
1355                         {
1356                                 char* mode = parameters[1];
1357
1358                                 MOD_RESULT = 0;
1359
1360                                 if (*mode == '+')
1361                                         mode++;
1362
1363                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *mode, "", false, 0));
1364                                 if(!MOD_RESULT)
1365                                 {
1366                                         if (*mode == 'b')
1367                                         {
1368                                                 for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
1369                                                 {
1370                                                         WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, chan->name, i->data, i->set_by, i->set_time);
1371                                                 }
1372                                                 WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, chan->name);
1373                                                 return;
1374                                         }
1375
1376                                         if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1377                                         {
1378                                                 // list of items for an extmode
1379                                                 log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1380                                                 FOREACH_MOD(I_OnSendList,OnSendList(user,chan,*mode));
1381                                                 return;
1382                                         }
1383                                 }
1384                         }
1385
1386                         if ((IS_LOCAL(user)) && (!is_uline(user->server)) && (!chan->HasUser(user)))
1387                         {
1388                                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, chan->name);
1389                                 return;
1390                         }
1391
1392                         MOD_RESULT = 0;
1393                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, chan, AC_GENERAL_MODE));
1394
1395                         if(MOD_RESULT == ACR_DENY)
1396                                 return;
1397
1398                         if(MOD_RESULT == ACR_DEFAULT)
1399                         {
1400                                 if ((IS_LOCAL(user)) && (cstatus(user,chan) < STATUS_HOP))
1401                                 {
1402                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
1403                                         return;
1404                                 }
1405                         }
1406
1407                         ServerInstance->ModeGrok->ProcessModes(parameters,user,chan,cstatus(user,chan),pcnt,false,false,false);
1408                 }
1409                 else
1410                 {
1411                         WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1412                 }
1413         }
1414 }
1415
1416
1417
1418
1419 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1420 {
1421         chanrec* Ptr;
1422         userrec* dest = Find(parameters[0]);
1423         int can_change;
1424         int direction = 1;
1425         char outpars[MAXBUF];
1426         bool next_ok = true;
1427
1428         if ((dest) && (pcnt > 1))
1429         {
1430                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1431                 parameters[1] = (char*)tidied.c_str();
1432
1433                 char dmodes[MAXBUF];
1434                 strlcpy(dmodes,dest->modes,MAXBUF);
1435
1436                 outpars[0] = *parameters[1];
1437                 outpars[1] = 0;
1438                 direction = (*parameters[1] == '+');
1439
1440                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1441                         return;
1442
1443                 for (char* i = parameters[1]; *i; i++)
1444                 {
1445                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1446                                 next_ok = true;
1447
1448                         switch (*i)
1449                         {
1450                                 case ' ':
1451                                 continue;
1452
1453                                 case '+':
1454                                         if ((direction != 1) && (next_ok))
1455                                         {
1456                                                 next_ok = false;
1457                                                 charlcat(outpars,'+',MAXBUF);
1458                                         }
1459                                         direction = 1;
1460                                 break;
1461
1462                                 case '-':
1463                                         if ((direction != 0) && (next_ok))
1464                                         {
1465                                                 next_ok = false;
1466                                                 charlcat(outpars,'-',MAXBUF);
1467                                         }
1468                                         direction = 0;
1469                                 break;
1470
1471                                 default:
1472                                         log(DEBUG,"begin mode processing entry");
1473                                         can_change = 1;
1474                                         if (can_change)
1475                                         {
1476                                                 if (direction == 1)
1477                                                 {
1478                                                         log(DEBUG,"umode %c being added",*i);
1479                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1480                                                         {
1481                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1482                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1483                                                                 {
1484                                                                         charlcat(dmodes,*i,MAXBUF);
1485                                                                         charlcat(outpars,*i,53);
1486                                                                         switch (*i)
1487                                                                         {
1488                                                                                 case 'i':
1489                                                                                         dest->modebits |= UM_INVISIBLE;
1490                                                                                 break;
1491                                                                                 case 's':
1492                                                                                         dest->modebits |= UM_SERVERNOTICE;
1493                                                                                 break;
1494                                                                                 case 'w':
1495                                                                                         dest->modebits |= UM_WALLOPS;
1496                                                                                 break;
1497                                                                                 default:
1498                                                                                 break;
1499                                                                         }
1500                                                                 }
1501                                                         }
1502                                                 }
1503                                                 else
1504                                                 {
1505                                                         // can only remove a mode they already have
1506                                                         log(DEBUG,"umode %c being removed",*i);
1507                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1508                                                         {
1509                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1510                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1511                                                                 {
1512                                                                         charlcat(outpars,*i,MAXBUF);
1513                                                                         charremove(dmodes,*i);
1514                                                                         switch (*i)
1515                                                                         {
1516                                                                                 case 'i':
1517                                                                                         dest->modebits &= ~UM_INVISIBLE;
1518                                                                                 break;
1519                                                                                 case 's':
1520                                                                                         dest->modebits &= ~UM_SERVERNOTICE;
1521                                                                                 break;
1522                                                                                 case 'w':
1523                                                                                         dest->modebits &= ~UM_WALLOPS;
1524                                                                                 break;
1525                                                                                 default:
1526                                                                                 break;
1527                                                                         }
1528                                                                 }
1529                                                         }
1530                                                 }
1531                                         }
1532                                 break;
1533                         }
1534                 }
1535                 if (*outpars)
1536                 {
1537                         char b[MAXBUF];
1538                         char* z = b;
1539
1540                         for (char* i = outpars; *i;)
1541                         {
1542                                 *z++ = *i++;
1543                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1544                                 {
1545                                         // someones playing silly buggers and trying
1546                                         // to put a +- or -+ into the line...
1547                                         i++;
1548                                 }
1549                                 if (!*(i+1))
1550                                 {
1551                                         // Someone's trying to make the last character in
1552                                         // the line be a + or - symbol.
1553                                         if ((*i == '-') || (*i == '+'))
1554                                         {
1555                                                 i++;
1556                                         }
1557                                 }
1558                         }
1559                         *z = 0;
1560
1561                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1562                         {
1563                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1564                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1565                         }
1566
1567                         log(DEBUG,"Stripped mode line");
1568                         log(DEBUG,"Line dest is now %s",dmodes);
1569                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1570
1571                 }
1572
1573                 return;
1574         }
1575
1576         Ptr = FindChan(parameters[0]);
1577         if (Ptr)
1578         {
1579                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1580         }
1581         else
1582         {
1583                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1584         }
1585 }