src/mode.cpp

   1 /*       +------------------------------------+
   2  *       | Inspire Internet Relay Chat Daemon |
   3  *       +------------------------------------+
   4  *
   5  *  InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev.
   6  *                       E-mail:
   7  *                <brain@chatspike.net>
   8  *                <Craig@chatspike.net>
   9  *
  10  * Written by Craig Edwards, Craig McLure, and others.
  11  * This program is free but copyrighted software; see
  12  *            the file COPYING for details.
  13  *
  14  * ---------------------------------------------------
  15  */
  16
  17 using namespace std;
  18
  19 #include "inspircd_config.h"
  20 #include "inspircd.h"
  21 #include "configreader.h"
  22 #include <unistd.h>
  23 #include <sys/errno.h>
  24 #include <time.h>
  25 #include <string>
  26 #ifdef GCC3
  27 #include <ext/hash_map>
  28 #else
  29 #include <hash_map>
  30 #endif
  31 #include <map>
  32 #include <sstream>
  33 #include <vector>
  34 #include <deque>
  35 #include "connection.h"
  36 #include "users.h"
  37 #include "ctables.h"
  38 #include "globals.h"
  39 #include "modules.h"
  40 #include "dynamic.h"
  41 #include "wildcard.h"
  42 #include "message.h"
  43 #include "commands.h"
  44 #include "xline.h"
  45 #include "inspstring.h"
  46 #include "helperfuncs.h"
  47 #include "mode.h"
  48
  49 extern int MODCOUNT;
  50 extern std::vector<Module*> modules;
  51 extern std::vector<ircd_module*> factory;
  52 extern InspIRCd* ServerInstance;
  53 extern ServerConfig* Config;
  54
  55 extern time_t TIME;
  56
  57 ModeHandler::ModeHandler(char modeletter, int parameters, bool listmode, ModeType type, bool operonly) : mode(modeletter), n_params(parameters), list(listmode), m_type(type), oper(operonly)
  58 {
  59 }
  60
  61 ModeHandler::~ModeHandler()
  62 {
  63 }
  64
  65 bool ModeHandler::IsListMode()
  66 {
  67         return list;
  68 }
  69
  70 ModeType ModeHandler::GetModeType()
  71 {
  72         return m_type;
  73 }
  74
  75 bool ModeHandler::NeedsOper()
  76 {
  77         return oper;
  78 }
  79
  80 int ModeHandler::GetNumParams()
  81 {
  82         return n_params;
  83 }
  84
  85 char ModeHandler::GetModeChar()
  86 {
  87         return mode;
  88 }
  89
  90 ModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding)
  91 {
  92         return MODEACTION_DENY;
  93 }
  94
  95 void ModeHandler::DisplayList(userrec* user, chanrec* channel)
  96 {
  97 }
  98
  99 bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)
 100 {
 101         return (ours < theirs);
 102 }
 103
 104 ModeWatcher::ModeWatcher(char modeletter, ModeType type) : mode(modeletter), m_type(type)
 105 {
 106 }
 107
 108 ModeWatcher::~ModeWatcher()
 109 {
 110 }
 111
 112 char ModeWatcher::GetModeChar()
 113 {
 114         return mode;
 115 }
 116
 117 ModeType ModeWatcher::GetModeType()
 118 {
 119         return m_type;
 120 }
 121
 122 bool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string &parameter, bool adding, ModeType type)
 123 {
 124         return true;
 125 }
 126
 127 void ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string &parameter, bool adding, ModeType type)
 128 {
 129 }
 130
 131 userrec* ModeParser::SanityChecks(userrec *user,char *dest,chanrec *chan,int status)
 132 {
 133         userrec *d;
 134         if ((!user) || (!dest) || (!chan) || (!*dest))
 135         {
 136                 return NULL;
 137         }
 138         d = Find(dest);
 139         if (!d)
 140         {
 141                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
 142                 return NULL;
 143         }
 144         return d;
 145 }
 146
 147 char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)
 148 {
 149         if (!chan)
 150                 return NULL;
 151
 152         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
 153         {
 154                 if (((ucrec*)(*i))->channel == chan)
 155                 {
 156                         if (((ucrec*)(*i))->uc_modes & MASK)
 157                         {
 158                                 return NULL;
 159                         }
 160                         ((ucrec*)(*i))->uc_modes = ((ucrec*)(*i))->uc_modes | MASK;
 161                         switch (MASK)
 162                         {
 163                                 case UCMODE_OP:
 164                                         ((ucrec*)(*i))->channel->AddOppedUser(d);
 165                                 break;
 166                                 case UCMODE_HOP:
 167                                         ((ucrec*)(*i))->channel->AddHalfoppedUser(d);
 168                                 break;
 169                                 case UCMODE_VOICE:
 170                                         ((ucrec*)(*i))->channel->AddVoicedUser(d);
 171                                 break;
 172                         }
 173                         log(DEBUG,"grant: %s %s",((ucrec*)(*i))->channel->name,d->nick);
 174                         return d->nick;
 175                 }
 176         }
 177         return NULL;
 178 }
 179
 180 char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)
 181 {
 182         if (!chan)
 183                 return NULL;
 184
 185         for (std::vector<ucrec*>::const_iterator i = d->chans.begin(); i != d->chans.end(); i++)
 186         {
 187                 if (((ucrec*)(*i))->channel == chan)
 188                 {
 189                         if ((((ucrec*)(*i))->uc_modes & MASK) == 0)
 190                         {
 191                                 return NULL;
 192                         }
 193                         ((ucrec*)(*i))->uc_modes ^= MASK;
 194                         switch (MASK)
 195                         {
 196                                 case UCMODE_OP:
 197                                         ((ucrec*)(*i))->channel->DelOppedUser(d);
 198                                 break;
 199                                 case UCMODE_HOP:
 200                                         ((ucrec*)(*i))->channel->DelHalfoppedUser(d);
 201                                 break;
 202                                 case UCMODE_VOICE:
 203                                         ((ucrec*)(*i))->channel->DelVoicedUser(d);
 204                                 break;
 205                         }
 206                         log(DEBUG,"revoke: %s %s",((ucrec*)(*i))->channel->name,d->nick);
 207                         return d->nick;
 208                 }
 209         }
 210         return NULL;
 211 }
 212
 213 char* ModeParser::GiveOps(userrec *user,char *dest,chanrec *chan,int status)
 214 {
 215         userrec *d = this->SanityChecks(user,dest,chan,status);
 216
 217         if (d)
 218         {
 219                 if (IS_LOCAL(user))
 220                 {
 221                         int MOD_RESULT = 0;
 222                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_OP));
 223
 224                         if (MOD_RESULT == ACR_DENY)
 225                                 return NULL;
 226                         if (MOD_RESULT == ACR_DEFAULT)
 227                         {
 228                                 if ((status < STATUS_OP) && (!is_uline(user->server)))
 229                                 {
 230                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
 231                                         return NULL;
 232                                 }
 233                         }
 234                 }
 235
 236                 return this->Grant(d,chan,UCMODE_OP);
 237         }
 238         return NULL;
 239 }
 240
 241 char* ModeParser::GiveHops(userrec *user,char *dest,chanrec *chan,int status)
 242 {
 243         userrec *d = this->SanityChecks(user,dest,chan,status);
 244
 245         if (d)
 246         {
 247                 if (IS_LOCAL(user))
 248                 {
 249                         int MOD_RESULT = 0;
 250                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_HALFOP));
 251
 252                         if (MOD_RESULT == ACR_DENY)
 253                                 return NULL;
 254                         if (MOD_RESULT == ACR_DEFAULT)
 255                         {
 256                                 if ((status < STATUS_OP) && (!is_uline(user->server)))
 257                                 {
 258                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
 259                                         return NULL;
 260                                 }
 261                         }
 262                 }
 263
 264                 return this->Grant(d,chan,UCMODE_HOP);
 265         }
 266         return NULL;
 267 }
 268
 269 char* ModeParser::GiveVoice(userrec *user,char *dest,chanrec *chan,int status)
 270 {
 271         userrec *d = this->SanityChecks(user,dest,chan,status);
 272
 273         if (d)
 274         {
 275                 if (IS_LOCAL(user))
 276                 {
 277                         int MOD_RESULT = 0;
 278                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_VOICE));
 279
 280                         if (MOD_RESULT == ACR_DENY)
 281                                 return NULL;
 282                         if (MOD_RESULT == ACR_DEFAULT)
 283                         {
 284                                 if ((status < STATUS_HOP) && (!is_uline(user->server)))
 285                                 {
 286                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 287                                         return NULL;
 288                                 }
 289                         }
 290                 }
 291
 292                 return this->Grant(d,chan,UCMODE_VOICE);
 293         }
 294         return NULL;
 295 }
 296
 297 char* ModeParser::TakeOps(userrec *user,char *dest,chanrec *chan,int status)
 298 {
 299         userrec *d = this->SanityChecks(user,dest,chan,status);
 300
 301         if (d)
 302         {
 303                 if (IS_LOCAL(user))
 304                 {
 305                         int MOD_RESULT = 0;
 306                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEOP));
 307
 308                         if (MOD_RESULT == ACR_DENY)
 309                                 return NULL;
 310                         if (MOD_RESULT == ACR_DEFAULT)
 311                         {
 312                                 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 313                                 {
 314                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 315                                         return NULL;
 316                                 }
 317                         }
 318                 }
 319
 320                 return this->Revoke(d,chan,UCMODE_OP);
 321         }
 322         return NULL;
 323 }
 324
 325 char* ModeParser::TakeHops(userrec *user,char *dest,chanrec *chan,int status)
 326 {
 327         userrec *d = this->SanityChecks(user,dest,chan,status);
 328
 329         if (d)
 330         {
 331                 if (IS_LOCAL(user))
 332                 {
 333                         int MOD_RESULT = 0;
 334                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEHALFOP));
 335
 336                         if (MOD_RESULT == ACR_DENY)
 337                                 return NULL;
 338                         if (MOD_RESULT == ACR_DEFAULT)
 339                         {
 340                                 /* Tweak by Brain suggested by w00t, allow a halfop to dehalfop themselves */
 341                                 if ((user != d) && ((status < STATUS_OP) && (!is_uline(user->server))))
 342                                 {
 343                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 344                                         return NULL;
 345                                 }
 346                         }
 347                 }
 348
 349                 return this->Revoke(d,chan,UCMODE_HOP);
 350         }
 351         return NULL;
 352 }
 353
 354 char* ModeParser::TakeVoice(userrec *user,char *dest,chanrec *chan,int status)
 355 {
 356         userrec *d = this->SanityChecks(user,dest,chan,status);
 357
 358         if (d)
 359         {
 360                 if (IS_LOCAL(user))
 361                 {
 362                         int MOD_RESULT = 0;
 363                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEVOICE));
 364
 365                         if (MOD_RESULT == ACR_DENY)
 366                                 return NULL;
 367                         if (MOD_RESULT == ACR_DEFAULT)
 368                         {
 369                                 if ((status < STATUS_HOP) && (!is_uline(user->server)))
 370                                 {
 371                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 372                                         return NULL;
 373                                 }
 374                         }
 375                 }
 376
 377                 return this->Revoke(d,chan,UCMODE_VOICE);
 378         }
 379         return NULL;
 380 }
 381
 382 char* ModeParser::AddBan(userrec *user,char *dest,chanrec *chan,int status)
 383 {
 384         BanItem b;
 385         int toomanyexclamation = 0;
 386         int toomanyat = 0;
 387
 388         if ((!user) || (!dest) || (!chan) || (!*dest))
 389         {
 390                 log(DEFAULT,"*** BUG *** AddBan was given an invalid parameter");
 391                 return NULL;
 392         }
 393
 394         for (char* i = dest; *i; i++)
 395         {
 396                 if ((*i < 32) || (*i > 126))
 397                 {
 398                         return NULL;
 399                 }
 400                 else if (*i == '!')
 401                 {
 402                         toomanyexclamation++;
 403                 }
 404                 else if (*i == '@')
 405                 {
 406                         toomanyat++;
 407                 }
 408         }
 409
 410         if (toomanyexclamation != 1 || toomanyat != 1)
 411                 /*
 412                  * this stops sillyness like n!u!u!u@h, though note that most
 413                  * ircds don't actually verify banmask validity. --w00t
 414                  */
 415                 return NULL;
 416
 417         long maxbans = GetMaxBans(chan->name);
 418         if ((unsigned)chan->bans.size() > (unsigned)maxbans)
 419         {
 420                 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);
 421                 return NULL;
 422         }
 423
 424         log(DEBUG,"AddBan: %s %s",chan->name,user->nick);
 425
 426         int MOD_RESULT = 0;
 427         FOREACH_RESULT(I_OnAddBan,OnAddBan(user,chan,dest));
 428         if (MOD_RESULT)
 429                 return NULL;
 430
 431         TidyBan(dest);
 432         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 433         {
 434                 if (!strcasecmp(i->data,dest))
 435                 {
 436                         // dont allow a user to set the same ban twice
 437                         return NULL;
 438                 }
 439         }
 440
 441         b.set_time = TIME;
 442         strlcpy(b.data,dest,MAXBUF);
 443         if (*user->nick)
 444         {
 445                 strlcpy(b.set_by,user->nick,NICKMAX-1);
 446         }
 447         else
 448         {
 449                 strlcpy(b.set_by,Config->ServerName,NICKMAX-1);
 450         }
 451         chan->bans.push_back(b);
 452         return dest;
 453 }
 454
 455 char* ModeParser::TakeBan(userrec *user,char *dest,chanrec *chan,int status)
 456 {
 457         if ((!user) || (!dest) || (!chan) || (!*dest)) {
 458                 log(DEFAULT,"*** BUG *** TakeBan was given an invalid parameter");
 459                 return 0;
 460         }
 461
 462         log(DEBUG,"del_ban: %s %s",chan->name,user->nick);
 463         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 464         {
 465                 if (!strcasecmp(i->data,dest))
 466                 {
 467                         int MOD_RESULT = 0;
 468                         FOREACH_RESULT(I_OnDelBan,OnDelBan(user,chan,dest));
 469                         if (MOD_RESULT)
 470                                 return NULL;
 471                         chan->bans.erase(i);
 472                         return dest;
 473                 }
 474         }
 475         return NULL;
 476 }
 477
 478 void ModeParser::Process(char **parameters, int pcnt, userrec *user)
 479 {
 480         std::string target = parameters[0];
 481         ModeType type = MODETYPE_USER;
 482         chanrec* targetchannel = FindChan(parameters[0]);
 483         userrec* targetuser  = Find(parameters[0]);
 484
 485         if (pcnt > 1)
 486         {
 487                 if (targetchannel)
 488                 {
 489                         type = MODETYPE_CHANNEL;
 490                 }
 491                 else if (targetuser)
 492                 {
 493                         type = MODETYPE_USER;
 494                 }
 495                 else
 496                 {
 497                         /* No such nick/channel */
 498                         return;
 499                 }
 500                 std::string mode_sequence = parameters[1];
 501                 std::string parameter = "";
 502                 std::ostringstream parameter_list;
 503                 std::string output_sequence = "";
 504                 bool adding = true, state_change = false;
 505                 int handler_id = 0;
 506
 507                 for (std::string::const_iterator modeletter = mode_sequence.begin(); modeletter != mode_sequence.end(); modeletter++)
 508                 {
 509                         switch (*modeletter)
 510                         {
 511                                 case '+':
 512                                         adding = true;
 513                                         state_change = true;
 514                                         continue;
 515                                 break;
 516                                 case '-':
 517                                         adding = false;
 518                                         state_change = true;
 519                                         continue;
 520                                 break;
 521                                 default:
 522                                         if (state_change)
 523                                                 output_sequence.append(adding ? "+" : "-");
 524
 525                                         handler_id = *modeletter-65;
 526                                         state_change = false;
 527
 528                                         if (modehandlers[handler_id])
 529                                         {
 530                                                 bool abort = false;
 531                                                 for (std::vector<ModeWatcher*>::iterator watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
 532                                                 {
 533                                                         if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == MODEACTION_DENY)
 534                                                                 abort = true;
 535                                                 }
 536                                                 if ((modehandlers[handler_id]->GetModeType() == type) && (!abort))
 537                                                 {
 538                                                         ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);
 539                                                         if (ma == MODEACTION_ALLOW)
 540                                                         {
 541                                                                 output_sequence = output_sequence + *modeletter;
 542
 543                                                                 for (std::vector<ModeWatcher*>::iterator watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)
 544                                                                 {
 545                                                                         (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);
 546                                                                 }
 547                                                         }
 548                                                 }
 549                                         }
 550                                 break;
 551                         }
 552                 }
 553         }
 554 }
 555
 556
 557 /** ModeParser::CompressModes()
 558  * Tidies up redundant modes,
 559  * e.g. +nt-nt+i becomes +-+i
 560  * A section further down the chain tidies up the +-+- crap.
 561  */
 562 std::string ModeParser::CompressModes(std::string modes,bool channelmodes)
 563 {
 564         /*
 565          * OK, iterate over the mode string and count how many times a certain mode appears in it.
 566          * Then, erase all instances of any character that appears more than once.
 567          * This only operates on modes with no parameters, you can still +v-v+v-v+v-v to your heart's content.
 568          */
 569
 570         /* Do we really need an int here? Can you fit enough modes in a line to overflow a short? */
 571         short counts[127];
 572         bool active[127];
 573         memset(counts, 0, sizeof(counts));
 574         memset(active, 0, sizeof(active));
 575
 576         for(unsigned char* i = (unsigned char*)modes.c_str(); *i; i++)
 577         {
 578                 if((*i == '+') || (*i == '-'))
 579                         continue;
 580
 581                 if(!channelmodes || (channelmodes && (strchr("itnmsp", *i) || (ModeDefined(*i, MT_CHANNEL) && !ModeDefinedOn(*i,MT_CHANNEL) && !ModeDefinedOff(*i,MT_CHANNEL)))))
 582                 {
 583                         log(DEBUG,"Tidy mode %c", *i);
 584                         counts[*i]++;
 585                         active[*i] = true;
 586                 }
 587         }
 588
 589         for(unsigned char j = 65; j < 127; j++)
 590         {
 591                 if ((counts[j] > 1) && (active[j] == true))
 592                 {
 593                         std::string::size_type pos;
 594
 595                         while((pos = modes.find(j)) != std::string::npos)
 596                         {
 597                                 log(DEBUG, "Deleting occurence of mode %c...", j);
 598                                 modes.erase(pos, 1);
 599                                 log(DEBUG,"New mode line: %s", modes.c_str());
 600                         }
 601                 }
 602         }
 603
 604         return modes;
 605 }
 606
 607 void ModeParser::ProcessModes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent, bool local)
 608 {
 609         if ((!parameters) || (pcnt < 2)) {
 610                 return;
 611         }
 612
 613         char outlist[MAXBUF];
 614         char mlist[MAXBUF];
 615         char *outpars[32];
 616         int param = 2;
 617         int pc = 0;
 618         int ptr = 0;
 619         int mdir = 1;
 620         char* r = NULL;
 621         bool k_set = false, l_set = false, previously_set_l = false, previously_unset_l = false, previously_set_k = false, previously_unset_k = false;
 622
 623         int MOD_RESULT = 0;
 624
 625         if (IS_LOCAL(user))
 626         {
 627                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,chan,AC_GENERAL_MODE));
 628                 if (MOD_RESULT == ACR_DENY)
 629                         return;
 630         }
 631
 632         std::string tidied = this->CompressModes(parameters[1],true);
 633         strlcpy(mlist,tidied.c_str(),MAXBUF);
 634         char* modelist = mlist;
 635
 636         *outlist = *modelist;
 637         char* outl = outlist+1;
 638
 639         mdir = (*modelist == '+');
 640
 641         log(DEBUG,"process_modes: modelist: %s",modelist);
 642
 643         int len = tidied.length();
 644         while (modelist[len-1] == ' ')
 645                 modelist[--len] = '\0';
 646
 647         for (char* modechar = (modelist + 1); *modechar; ptr++, modechar++)
 648         {
 649                 r = NULL;
 650
 651                 /* If we have more than MAXMODES changes in one line,
 652                  * drop all after the MAXMODES
 653                  */
 654                 if (pc > MAXMODES-1)
 655                         break;
 656
 657
 658
 659                 switch (*modechar)
 660                 {
 661                         case '-':
 662                                 *outl++ = '-';
 663                                 mdir = 0;
 664                         break;
 665
 666                         case '+':
 667                                 *outl++ = '+';
 668                                 mdir = 1;
 669                         break;
 670
 671                         case 'o':
 672                                 log(DEBUG,"Ops");
 673                                 if ((param >= pcnt)) break;
 674                                 log(DEBUG,"Enough parameters left");
 675                                 r = NULL;
 676                                 if (mdir == 1)
 677                                 {
 678                                         MOD_RESULT = 0;
 679                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1));
 680                                         if (!MOD_RESULT)
 681                                         {
 682                                                 r = GiveOps(user,parameters[param++],chan,status);
 683                                         }
 684                                         else param++;
 685                                 }
 686                                 else
 687                                 {
 688                                         MOD_RESULT = 0;
 689                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1));
 690                                         if (!MOD_RESULT)
 691                                         {
 692                                                 r = TakeOps(user,parameters[param++],chan,status);
 693                                         }
 694                                         else param++;
 695                                 }
 696                                 if (r)
 697                                 {
 698                                         *outl++ = 'o';
 699                                         outpars[pc++] = r;
 700                                 }
 701                         break;
 702
 703                         case 'h':
 704                                 if (((param >= pcnt)) || (!Config->AllowHalfop)) break;
 705                                 r = NULL;
 706                                 if (mdir == 1)
 707                                 {
 708                                         MOD_RESULT = 0;
 709                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1));
 710                                         if (!MOD_RESULT)
 711                                         {
 712                                                 r = GiveHops(user,parameters[param++],chan,status);
 713                                         }
 714                                         else param++;
 715                                 }
 716                                 else
 717                                 {
 718                                         MOD_RESULT = 0;
 719                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1));
 720                                         if (!MOD_RESULT)
 721                                         {
 722                                                 r = TakeHops(user,parameters[param++],chan,status);
 723                                         }
 724                                         else param++;
 725                                 }
 726                                 if (r)
 727                                 {
 728                                         *outl++ = 'h';
 729                                         outpars[pc++] = r;
 730                                 }
 731                         break;
 732
 733
 734                         case 'v':
 735                                         if ((param >= pcnt)) break;
 736                                         r = NULL;
 737                                         if (mdir == 1)
 738                                         {
 739                                                 MOD_RESULT = 0;
 740                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1));
 741                                                 if (!MOD_RESULT)
 742                                                 {
 743                                                         r = GiveVoice(user,parameters[param++],chan,status);
 744                                                 }
 745                                                 else param++;
 746                                         }
 747                                         else
 748                                         {
 749                                                 MOD_RESULT = 0;
 750                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1));
 751                                                 if (!MOD_RESULT)
 752                                                 {
 753                                                         r = TakeVoice(user,parameters[param++],chan,status);
 754                                                 }
 755                                                 else param++;
 756                                         }
 757                                         if (r)
 758                                         {
 759                                                 *outl++ = 'v';
 760                                                 outpars[pc++] = r;
 761                                         }
 762                         break;
 763
 764                         case 'b':
 765                                 if ((param >= pcnt)) break;
 766                                 r = NULL;
 767                                 if (mdir == 1)
 768                                 {
 769                                         MOD_RESULT = 0;
 770                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1));
 771                                         if (!MOD_RESULT)
 772                                         {
 773                                                 r = AddBan(user,parameters[param++],chan,status);
 774                                         }
 775                                         else param++;
 776                                 }
 777                                 else
 778                                 {
 779                                         MOD_RESULT = 0;
 780                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1));
 781                                         if (!MOD_RESULT)
 782                                         {
 783                                                 r = TakeBan(user,parameters[param++],chan,status);
 784                                         }
 785                                         else param++;
 786                                 }
 787                                 if (r)
 788                                 {
 789                                         *outl++ = 'b';
 790                                         outpars[pc++] = parameters[param-1];
 791                                 }
 792                         break;
 793
 794
 795                         case 'k':
 796                                 if ((param >= pcnt))
 797                                         break;
 798
 799                                 if (mdir == 1)
 800                                 {
 801                                         if (k_set)
 802                                                 break;
 803
 804                                         if (previously_unset_k)
 805                                                 break;
 806                                         previously_set_k = true;
 807
 808                                         if (!chan->modes[CM_KEY])
 809                                         {
 810                                                 MOD_RESULT = 0;
 811                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1));
 812                                                 if (!MOD_RESULT)
 813                                                 {
 814                                                         *outl++ = 'k';
 815                                                         char key[MAXBUF];
 816                                                         strlcpy(key,parameters[param++],32);
 817                                                         outpars[pc++] = key;
 818                                                         strlcpy(chan->key,key,MAXBUF);
 819                                                         chan->modes[CM_KEY] = 1;
 820                                                         k_set = true;
 821                                                 }
 822                                                 else param++;
 823                                         }
 824                                 }
 825                                 else
 826                                 {
 827                                         /* checks on -k are case sensitive and only accurate to the
 828                                                    first 32 characters */
 829                                         if (previously_set_k)
 830                                                 break;
 831                                         previously_unset_k = true;
 832
 833                                         char key[MAXBUF];
 834                                         MOD_RESULT = 0;
 835                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 836                                         if (!MOD_RESULT)
 837                                         {
 838                                                 strlcpy(key,parameters[param++],32);
 839                                                 /* only allow -k if correct key given */
 840                                                 if (!strcmp(chan->key,key))
 841                                                 {
 842                                                         *outl++ = 'k';
 843                                                         *chan->key = 0;
 844                                                         chan->modes[CM_KEY] = 0;
 845                                                         outpars[pc++] = key;
 846                                                 }
 847                                         }
 848                                         else param++;
 849                                 }
 850                         break;
 851
 852                         case 'l':
 853                                 if (mdir == 0)
 854                                 {
 855                                         if (previously_set_l)
 856                                                 break;
 857                                         previously_unset_l = true;
 858                                         MOD_RESULT = 0;
 859                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 860                                         if (!MOD_RESULT)
 861                                         {
 862                                                 if (chan->modes[CM_LIMIT])
 863                                                 {
 864                                                         *outl++ = 'l';
 865                                                         chan->limit = 0;
 866                                                         chan->modes[CM_LIMIT] = 0;
 867                                                 }
 868                                         }
 869                                 }
 870
 871                                 if ((param >= pcnt)) break;
 872                                 if (mdir == 1)
 873                                 {
 874                                         if (l_set)
 875                                                 break;
 876                                         if (previously_unset_l)
 877                                                 break;
 878                                         previously_set_l = true;
 879                                         bool invalid = false;
 880                                         for (char* f = parameters[param]; *f; f++)
 881                                         {
 882                                                 if ((*f < '0') || (*f > '9'))
 883                                                 {
 884                                                         invalid = true;
 885                                                 }
 886                                         }
 887                                         /* If the limit is < 1, or the new limit is the current limit, dont allow */
 888                                         if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 889                                         {
 890                                                 invalid = true;
 891                                         }
 892
 893                                         if (invalid)
 894                                                 break;
 895
 896                                         MOD_RESULT = 0;
 897                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 898                                         if (!MOD_RESULT)
 899                                         {
 900
 901                                                 chan->limit = atoi(parameters[param]);
 902
 903                                                 // reported by mech: large values cause underflow
 904                                                 if (chan->limit < 0)
 905                                                         chan->limit = 0x7FFF;
 906                                         }
 907
 908                                         if (chan->limit)
 909                                         {
 910                                                 *outl++ = 'l';
 911                                                 chan->modes[CM_LIMIT] = 1;
 912                                                 outpars[pc++] = parameters[param++];
 913                                                 l_set = true;
 914                                         }
 915                                 }
 916                         break;
 917
 918                         case 'i':
 919                                 MOD_RESULT = 0;
 920                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 921                                 if (!MOD_RESULT)
 922                                 {
 923                                         if (mdir)
 924                                         {
 925                                                 if (!(chan->modes[CM_INVITEONLY])) *outl++ = 'i';
 926                                                 chan->modes[CM_INVITEONLY] = 1;
 927                                         }
 928                                         else
 929                                         {
 930                                                 if (chan->modes[CM_INVITEONLY]) *outl++ = 'i';
 931                                                 chan->modes[CM_INVITEONLY] = 0;
 932                                         }
 933                                 }
 934                         break;
 935
 936                         case 't':
 937                                 MOD_RESULT = 0;
 938                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 939                                 if (!MOD_RESULT)
 940                                 {
 941                                         if (mdir)
 942                                         {
 943                                                 if (!(chan->modes[CM_TOPICLOCK])) *outl++ = 't';
 944                                                 chan->modes[CM_TOPICLOCK] = 1;
 945                                         }
 946                                         else
 947                                         {
 948                                                 if (chan->modes[CM_TOPICLOCK]) *outl++ = 't';
 949                                                 chan->modes[CM_TOPICLOCK] = 0;
 950                                         }
 951                                 }
 952                         break;
 953
 954                         case 'n':
 955                                 MOD_RESULT = 0;
 956                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 957                                 if (!MOD_RESULT)
 958                                 {
 959                                         if (mdir)
 960                                         {
 961                                                 if (!(chan->modes[CM_NOEXTERNAL])) *outl++ = 'n';
 962                                                 chan->modes[CM_NOEXTERNAL] = 1;
 963                                         }
 964                                         else
 965                                         {
 966                                                 if (chan->modes[CM_NOEXTERNAL]) *outl++ = 'n';
 967                                                 chan->modes[CM_NOEXTERNAL] = 0;
 968                                         }
 969                                 }
 970                         break;
 971
 972                         case 'm':
 973                                 MOD_RESULT = 0;
 974                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 975                                 if (!MOD_RESULT)
 976                                 {
 977                                         if (mdir)
 978                                         {
 979                                                 if (!(chan->modes[CM_MODERATED])) *outl++ = 'm';
 980                                                 chan->modes[CM_MODERATED] = 1;
 981                                         }
 982                                         else
 983                                         {
 984                                                 if (chan->modes[CM_MODERATED]) *outl++ = 'm';
 985                                                 chan->modes[CM_MODERATED] = 0;
 986                                         }
 987                                 }
 988                         break;
 989
 990                         case 's':
 991                                 MOD_RESULT = 0;
 992                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 993                                 if (!MOD_RESULT)
 994                                 {
 995                                         if (mdir)
 996                                         {
 997                                                 if (!(chan->modes[CM_SECRET])) *outl++ = 's';
 998                                                 chan->modes[CM_SECRET] = 1;
 999                                                 if (chan->modes[CM_PRIVATE])
1000                                                 {
1001                                                         chan->modes[CM_PRIVATE] = 0;
1002                                                         if (mdir)
1003                                                         {
1004                                                                 *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
1005                                                         }
1006                                                 }
1007                                         }
1008                                         else
1009                                         {
1010                                                 if (chan->modes[CM_SECRET]) *outl++ = 's';
1011                                                 chan->modes[CM_SECRET] = 0;
1012                                         }
1013                                 }
1014                         break;
1015
1016                         case 'p':
1017                                 MOD_RESULT = 0;
1018                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
1019                                 if(!MOD_RESULT)
1020                                 {
1021                                         if(mdir)
1022                                         {
1023                                                 if(!(chan->modes[CM_PRIVATE]))
1024                                                         *outl++ = 'p';
1025
1026                                                 chan->modes[CM_PRIVATE] = 1;
1027
1028                                                 if(chan->modes[CM_SECRET])
1029                                                 {
1030                                                         chan->modes[CM_SECRET] = 0;
1031
1032                                                         *outl++ = '-';
1033                                                         *outl++ = 's';
1034                                                         *outl++ = '+';
1035                                                 }
1036                                         }
1037                                         else
1038                                         {
1039                                                 if(chan->modes[CM_PRIVATE])
1040                                                         *outl++ = 'p';
1041
1042                                                 chan->modes[CM_PRIVATE] = 0;
1043                                         }
1044                                 }
1045                                 break;
1046
1047                         default:
1048                                 string_list p;
1049                                 p.clear();
1050                                 bool x = chan->modes[*modechar-65];
1051                                 if ((!x && !mdir) || (x && mdir))
1052                                 {
1053                                         if (!ModeIsListMode(*modechar,MT_CHANNEL))
1054                                         {
1055                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
1056                                                 break;
1057                                         }
1058                                 }
1059                                 if (ModeDefined(*modechar,MT_CHANNEL))
1060                                 {
1061                                         /* A module has claimed this mode */
1062                                         if (param<pcnt)
1063                                         {
1064                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
1065                                                 {
1066                                                         p.push_back(parameters[param]);
1067                                                 }
1068                                                 if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
1069                                                 {
1070                                                         p.push_back(parameters[param]);
1071                                                 }
1072                                         }
1073                                         bool handled = false;
1074                                         if (param>=pcnt)
1075                                         {
1076                                                 // we're supposed to have a parameter, but none was given... so dont handle the mode.
1077                                                 if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
1078                                                 {
1079                                                         log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
1080                                                         handled = true;
1081                                                         param++;
1082                                                 }
1083                                         }
1084                                         // BIG ASS IDIOTIC CODER WARNING!
1085                                         // Using OnRawMode on another modules mode's behavour
1086                                         // will confuse the crap out of admins! just because you CAN
1087                                         // do it, doesnt mean you SHOULD!
1088                                         MOD_RESULT = 0;
1089                                         std::string para = "";
1090                                         if (p.size())
1091                                                 para = p[0];
1092
1093                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
1094                                         if(!MOD_RESULT)
1095                                         {
1096                                                 for (int i = 0; i <= MODCOUNT; i++)
1097                                                 {
1098                                                         if (!handled)
1099                                                         {
1100                                                                 int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
1101                                                                 if (t != 0)
1102                                                                 {
1103                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
1104                                                                         if (ModeIsListMode(*modechar,MT_CHANNEL))
1105                                                                         {
1106                                                                                 if (t == -1)
1107                                                                                 {
1108                                                                                         //pc++;
1109                                                                                         param++;
1110                                                                                 }
1111                                                                                 else
1112                                                                                 {
1113                                                                                         if (param < pcnt)
1114                                                                                         {
1115                                                                                                 *outl++ = *modechar;
1116                                                                                         }
1117                                                                                         outpars[pc++] = parameters[param++];
1118                                                                                 }
1119                                                                         }
1120                                                                         else
1121                                                                         {
1122                                                                                 *outl++ = *modechar;
1123                                                                                 chan->SetCustomMode(*modechar,mdir);
1124                                                                                 // include parameters in output if mode has them
1125                                                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
1126                                                                                 {
1127                                                                                         if (param < pcnt)
1128                                                                                         {
1129                                                                                                 chan->SetCustomModeParam(*modechar,parameters[param],mdir);
1130                                                                                                 outpars[pc++] = parameters[param++];
1131                                                                                         }
1132                                                                                 }
1133                                                                         }
1134                                                                         // break, because only one module can handle the mode.
1135                                                                         handled = true;
1136                                                                 }
1137                                                         }
1138                                                 }
1139                                         }
1140                                 }
1141                                 else
1142                                 {
1143                                         WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
1144                                 }
1145                         break;
1146                 }
1147         }
1148
1149         /* Null terminate it now we're done */
1150         *outl = 0;
1151
1152
1153         /************ Fast, but confusing string tidying ************/
1154         outl = outlist;
1155         while (*outl && (*outl < 'A'))
1156                 outl++;
1157         /* outl now points to the first mode character after +'s and -'s */
1158         outl--;
1159         /* Now points at first mode-modifier + or - symbol */
1160         char* trim = outl;
1161         /* Now we tidy off any trailing -'s etc */
1162         while (*trim++);
1163         trim--;
1164         while ((*--trim == '+') || (*trim == '-'))
1165                 *trim = 0;
1166         /************ Done wih the string tidy functions ************/
1167
1168
1169         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1170         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1171         {
1172                 for (ptr = 0; ptr < pc; ptr++)
1173                 {
1174                         charlcat(outl,' ',MAXBUF);
1175                         strlcat(outl,outpars[ptr],MAXBUF-1);
1176                 }
1177                 if (local)
1178                 {
1179                         log(DEBUG,"Local mode change");
1180                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1181                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1182                 }
1183                 else
1184                 {
1185                         if (servermode)
1186                         {
1187                                 if (!silent)
1188                                 {
1189                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1190                                 }
1191
1192                         }
1193                         else
1194                         {
1195                                 if (!silent)
1196                                 {
1197                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1198                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1199                                 }
1200                         }
1201                 }
1202         }
1203 }
1204
1205 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1206
1207 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1208 {
1209         bool sourceoper = (strchr(sourcemodes,'o') != NULL);
1210         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1211         // Servers can +o and -o arbitrarily
1212         if ((serveroverride == true) && (umode == 'o'))
1213         {
1214                 return true;
1215         }
1216         // RFC1459 specified modes
1217         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1218         {
1219                 /* umode allowed by RFC1459 scemantics */
1220                 return true;
1221         }
1222
1223         /* user may not +o themselves or others, but an oper may de-oper other opers or themselves */
1224         if (sourceoper && !adding)
1225         {
1226                 return true;
1227         }
1228         else if (umode == 'o')
1229         {
1230                 /* Bad oper, bad bad! */
1231                 return false;
1232         }
1233
1234         /* process any module-defined modes that need oper */
1235         if ((ModeDefinedOper(umode,MT_CLIENT)) && (sourceoper))
1236         {
1237                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1238                 return true;
1239         }
1240         else if (ModeDefined(umode,MT_CLIENT))
1241         {
1242                 // process any module-defined modes that don't need oper
1243                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1244                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!sourceoper))
1245                 {
1246                         // no, this mode needs oper, and this user 'aint got what it takes!
1247                         return false;
1248                 }
1249                 return true;
1250         }
1251
1252         // anything else - return false.
1253         log(DEBUG,"umode %c not known by any ruleset",umode);
1254         return false;
1255 }
1256
1257 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1258 {
1259         userrec* s2;
1260         bool faked = false;
1261         if (!source)
1262         {
1263                 s2 = new userrec;
1264                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1265                 *s2->modes = 'o';
1266                 *(s2->modes+1) = 0;
1267                 s2->fd = -1;
1268                 source = s2;
1269                 faked = true;
1270         }
1271         string_list p;
1272         p.clear();
1273         if (ModeDefined(umode,MT_CLIENT))
1274         {
1275                 for (int i = 0; i <= MODCOUNT; i++)
1276                 {
1277                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1278                         {
1279                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1280                                 return true;
1281                         }
1282                 }
1283                 log(DEBUG,"No module claims umode %c",umode);
1284                 if (faked)
1285                 {
1286                         delete s2;
1287                         source = NULL;
1288                 }
1289                 return false;
1290         }
1291         else
1292         {
1293                 if (faked)
1294                 {
1295                         delete s2;
1296                         source = NULL;
1297                 }
1298                 return false;
1299         }
1300 }
1301
1302 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1303 {
1304         chanrec* chan;
1305         userrec* dest = Find(parameters[0]);
1306         int MOD_RESULT;
1307         int can_change;
1308         int direction = 1;
1309         char outpars[MAXBUF];
1310         bool next_ok = true;
1311
1312         if (!user)
1313                 return;
1314
1315         if ((dest) && (pcnt == 1))
1316         {
1317                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1318                 return;
1319         }
1320         else if ((dest) && (pcnt > 1))
1321         {
1322                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1323                 parameters[1] = (char*)tidied.c_str();
1324
1325                 char dmodes[MAXBUF];
1326                 strlcpy(dmodes,dest->modes,MAXMODES);
1327                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1328
1329                 can_change = 0;
1330                 if (user != dest)
1331                 {
1332                         if ((*user->oper) || (is_uline(user->server)))
1333                         {
1334                                 can_change = 1;
1335                         }
1336                 }
1337                 else
1338                 {
1339                         can_change = 1;
1340                 }
1341                 if (!can_change)
1342                 {
1343                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1344                         return;
1345                 }
1346
1347                 outpars[0] = *parameters[1];
1348                 outpars[1] = 0;
1349                 direction = (*parameters[1] == '+');
1350
1351                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1352                         return;
1353
1354                 for (char* i = parameters[1]; *i; i++)
1355                 {
1356                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1357                                 next_ok = true;
1358
1359                         switch (*i)
1360                         {
1361                                 case ' ':
1362                                 continue;
1363
1364                                 case '+':
1365                                         if ((direction != 1) && (next_ok))
1366                                         {
1367                                                 charlcat(outpars,'+',MAXBUF);
1368                                                 next_ok = false;
1369                                         }
1370                                         direction = 1;
1371                                 break;
1372
1373                                 case '-':
1374                                         if ((direction != 0) && (next_ok))
1375                                         {
1376                                                 charlcat(outpars,'-',MAXBUF);
1377                                                 next_ok = false;
1378                                         }
1379                                         direction = 0;
1380                                 break;
1381
1382                                 default:
1383                                         can_change = 0;
1384                                         if (*user->oper)
1385                                         {
1386                                                 can_change = 1;
1387                                         }
1388                                         else
1389                                         {
1390                                                 if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1391                                                 {
1392                                                         can_change = 1;
1393                                                 }
1394                                         }
1395                                         if (can_change)
1396                                         {
1397                                                 if (direction == 1)
1398                                                 {
1399                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1400                                                         {
1401                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1402                                                                 {
1403                                                                         charlcat(dmodes,*i,53);
1404                                                                         charlcat(outpars,*i,MAXMODES);
1405                                                                         switch (*i)
1406                                                                         {
1407                                                                                 case 'o':
1408                                                                                         FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1409                                                                                 break;
1410                                                                                 case 'i':
1411                                                                                         dest->modebits |= UM_INVISIBLE;
1412                                                                                 break;
1413                                                                                 case 's':
1414                                                                                         dest->modebits |= UM_SERVERNOTICE;
1415                                                                                 break;
1416                                                                                 case 'w':
1417                                                                                         dest->modebits |= UM_WALLOPS;
1418                                                                                 break;
1419                                                                                 default:
1420                                                                                 break;
1421                                                                         }
1422                                                                 }
1423                                                         }
1424                                                 }
1425                                                 else
1426                                                 {
1427                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1428                                                         {
1429                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1430                                                                 {
1431                                                                         charlcat(outpars,*i,MAXMODES);
1432                                                                         charremove(dmodes,*i);
1433                                                                         switch (*i)
1434                                                                         {
1435                                                                                 case 'o':
1436                                                                                         *dest->oper = 0;
1437                                                                                         DeleteOper(dest);
1438                                                                                 break;
1439                                                                                 case 'i':
1440                                                                                         dest->modebits &= ~UM_INVISIBLE;
1441                                                                                 break;
1442                                                                                 case 's':
1443                                                                                         dest->modebits &= ~UM_SERVERNOTICE;
1444                                                                                 break;
1445                                                                                 case 'w':
1446                                                                                         dest->modebits &= ~UM_WALLOPS;
1447                                                                                 break;
1448                                                                                 default:
1449                                                                                 break;
1450                                                                         }
1451                                                                 }
1452                                                         }
1453                                                 }
1454                                         }
1455                                 break;
1456                         }
1457                 }
1458                 if (*outpars)
1459                 {
1460                         char b[MAXBUF];
1461                         char* z = b;
1462
1463                         for (char* i = outpars; *i;)
1464                         {
1465                                 *z++ = *i++;
1466                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1467                                 {
1468                                         // someones playing silly buggers and trying
1469                                         // to put a +- or -+ into the line...
1470                                         i++;
1471                                 }
1472                                 if (!*(i+1))
1473                                 {
1474                                         // Someone's trying to make the last character in
1475                                         // the line be a + or - symbol.
1476                                         if ((*i == '-') || (*i == '+'))
1477                                         {
1478                                                 i++;
1479                                         }
1480                                 }
1481                         }
1482                         *z = 0;
1483
1484                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1485                         {
1486                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1487                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1488                         }
1489
1490                         log(DEBUG,"Stripped mode line");
1491                         log(DEBUG,"Line dest is now %s",dmodes);
1492                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1493
1494                 }
1495
1496                 return;
1497         }
1498         else
1499         {
1500                 chan = FindChan(parameters[0]);
1501                 if(chan)
1502                 {
1503                         if (pcnt == 1)
1504                         {
1505                                 /* just /modes #channel */
1506                                 WriteServ(user->fd,"324 %s %s +%s",user->nick, chan->name, chanmodes(chan, chan->HasUser(user)));
1507                                 WriteServ(user->fd,"329 %s %s %d", user->nick, chan->name, chan->created);
1508                                 return;
1509                         }
1510                         else if (pcnt == 2)
1511                         {
1512                                 char* mode = parameters[1];
1513
1514                                 MOD_RESULT = 0;
1515
1516                                 if (*mode == '+')
1517                                         mode++;
1518
1519                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *mode, "", false, 0));
1520                                 if(!MOD_RESULT)
1521                                 {
1522                                         if (*mode == 'b')
1523                                         {
1524                                                 for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
1525                                                 {
1526                                                         WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, chan->name, i->data, i->set_by, i->set_time);
1527                                                 }
1528                                                 WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, chan->name);
1529                                                 return;
1530                                         }
1531
1532                                         if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1533                                         {
1534                                                 // list of items for an extmode
1535                                                 log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1536                                                 FOREACH_MOD(I_OnSendList,OnSendList(user,chan,*mode));
1537                                                 return;
1538                                         }
1539                                 }
1540                         }
1541
1542                         if ((IS_LOCAL(user)) && (!is_uline(user->server)) && (!chan->HasUser(user)))
1543                         {
1544                                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, chan->name);
1545                                 return;
1546                         }
1547
1548                         MOD_RESULT = 0;
1549                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, chan, AC_GENERAL_MODE));
1550
1551                         if(MOD_RESULT == ACR_DENY)
1552                                 return;
1553
1554                         if(MOD_RESULT == ACR_DEFAULT)
1555                         {
1556                                 if ((IS_LOCAL(user)) && (cstatus(user,chan) < STATUS_HOP))
1557                                 {
1558                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
1559                                         return;
1560                                 }
1561                         }
1562
1563                         ServerInstance->ModeGrok->ProcessModes(parameters,user,chan,cstatus(user,chan),pcnt,false,false,false);
1564                 }
1565                 else
1566                 {
1567                         WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1568                 }
1569         }
1570 }
1571
1572
1573
1574
1575 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1576 {
1577         chanrec* Ptr;
1578         userrec* dest = Find(parameters[0]);
1579         int can_change;
1580         int direction = 1;
1581         char outpars[MAXBUF];
1582         bool next_ok = true;
1583
1584         if ((dest) && (pcnt > 1))
1585         {
1586                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1587                 parameters[1] = (char*)tidied.c_str();
1588
1589                 char dmodes[MAXBUF];
1590                 strlcpy(dmodes,dest->modes,MAXBUF);
1591
1592                 outpars[0] = *parameters[1];
1593                 outpars[1] = 0;
1594                 direction = (*parameters[1] == '+');
1595
1596                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1597                         return;
1598
1599                 for (char* i = parameters[1]; *i; i++)
1600                 {
1601                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1602                                 next_ok = true;
1603
1604                         switch (*i)
1605                         {
1606                                 case ' ':
1607                                 continue;
1608
1609                                 case '+':
1610                                         if ((direction != 1) && (next_ok))
1611                                         {
1612                                                 next_ok = false;
1613                                                 charlcat(outpars,'+',MAXBUF);
1614                                         }
1615                                         direction = 1;
1616                                 break;
1617
1618                                 case '-':
1619                                         if ((direction != 0) && (next_ok))
1620                                         {
1621                                                 next_ok = false;
1622                                                 charlcat(outpars,'-',MAXBUF);
1623                                         }
1624                                         direction = 0;
1625                                 break;
1626
1627                                 default:
1628                                         log(DEBUG,"begin mode processing entry");
1629                                         can_change = 1;
1630                                         if (can_change)
1631                                         {
1632                                                 if (direction == 1)
1633                                                 {
1634                                                         log(DEBUG,"umode %c being added",*i);
1635                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1636                                                         {
1637                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1638                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1639                                                                 {
1640                                                                         charlcat(dmodes,*i,MAXBUF);
1641                                                                         charlcat(outpars,*i,53);
1642                                                                         switch (*i)
1643                                                                         {
1644                                                                                 case 'i':
1645                                                                                         dest->modebits |= UM_INVISIBLE;
1646                                                                                 break;
1647                                                                                 case 's':
1648                                                                                         dest->modebits |= UM_SERVERNOTICE;
1649                                                                                 break;
1650                                                                                 case 'w':
1651                                                                                         dest->modebits |= UM_WALLOPS;
1652                                                                                 break;
1653                                                                                 default:
1654                                                                                 break;
1655                                                                         }
1656                                                                 }
1657                                                         }
1658                                                 }
1659                                                 else
1660                                                 {
1661                                                         // can only remove a mode they already have
1662                                                         log(DEBUG,"umode %c being removed",*i);
1663                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1664                                                         {
1665                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1666                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1667                                                                 {
1668                                                                         charlcat(outpars,*i,MAXBUF);
1669                                                                         charremove(dmodes,*i);
1670                                                                         switch (*i)
1671                                                                         {
1672                                                                                 case 'i':
1673                                                                                         dest->modebits &= ~UM_INVISIBLE;
1674                                                                                 break;
1675                                                                                 case 's':
1676                                                                                         dest->modebits &= ~UM_SERVERNOTICE;
1677                                                                                 break;
1678                                                                                 case 'w':
1679                                                                                         dest->modebits &= ~UM_WALLOPS;
1680                                                                                 break;
1681                                                                                 default:
1682                                                                                 break;
1683                                                                         }
1684                                                                 }
1685                                                         }
1686                                                 }
1687                                         }
1688                                 break;
1689                         }
1690                 }
1691                 if (*outpars)
1692                 {
1693                         char b[MAXBUF];
1694                         char* z = b;
1695
1696                         for (char* i = outpars; *i;)
1697                         {
1698                                 *z++ = *i++;
1699                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1700                                 {
1701                                         // someones playing silly buggers and trying
1702                                         // to put a +- or -+ into the line...
1703                                         i++;
1704                                 }
1705                                 if (!*(i+1))
1706                                 {
1707                                         // Someone's trying to make the last character in
1708                                         // the line be a + or - symbol.
1709                                         if ((*i == '-') || (*i == '+'))
1710                                         {
1711                                                 i++;
1712                                         }
1713                                 }
1714                         }
1715                         *z = 0;
1716
1717                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1718                         {
1719                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1720                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1721                         }
1722
1723                         log(DEBUG,"Stripped mode line");
1724                         log(DEBUG,"Line dest is now %s",dmodes);
1725                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1726
1727                 }
1728
1729                 return;
1730         }
1731
1732         Ptr = FindChan(parameters[0]);
1733         if (Ptr)
1734         {
1735                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1736         }
1737         else
1738         {
1739                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1740         }
1741 }