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