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