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         for (unsigned int i = 0; i < modes.length(); i++)
 409         {
 410                 if ((modes[i] == '+') || (modes[i] == '-'))
 411                         continue;
 412                 if (channelmodes)
 413                 {
 414                         if ((strchr("itnmsp",modes[i])) || ((ModeDefined(modes[i],MT_CHANNEL)) && (ModeDefinedOn(modes[i],MT_CHANNEL)==0) && (ModeDefinedOff(modes[i],MT_CHANNEL)==0)))
 415                         {
 416                                 log(DEBUG,"Tidy mode %c",modes[i]);
 417                                 counts[(unsigned int)modes[i]]++;
 418                                 active[(unsigned int)modes[i]] = true;
 419                         }
 420                 }
 421                 else
 422                 {
 423                         log(DEBUG,"Tidy mode %c",modes[i]);
 424                         counts[(unsigned int)modes[i]]++;
 425                         active[(unsigned int)modes[i]] = true;
 426                 }
 427         }
 428         for (int j = 65; j < 127; j++)
 429         {
 430                 if ((counts[j] > 1) && (active[j] == true))
 431                 {
 432                         static char v[2];
 433                         v[0] = (unsigned char)j;
 434                         v[1] = '\0';
 435                         std::string mode_str = v;
 436                         std::string::size_type pos = modes.find(mode_str);
 437                         if (pos != std::string::npos)
 438                         {
 439                                 log(DEBUG,"all occurances of mode %c to be deleted...",(unsigned char)j);
 440                                 while (modes.find(mode_str) != std::string::npos)
 441                                         modes.erase(modes.find(mode_str),1);
 442                                 log(DEBUG,"New mode line: %s",modes.c_str());
 443                         }
 444                 }
 445         }
 446         return modes;
 447 }
 448
 449 void ModeParser::ProcessModes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent, bool local)
 450 {
 451         if ((!parameters) || (pcnt < 2)) {
 452                 return;
 453         }
 454
 455         char outlist[MAXBUF];
 456         char *outpars[32];
 457         int param = 2;
 458         int pc = 0;
 459         int ptr = 0;
 460         int mdir = 1;
 461         char* r = NULL;
 462         bool k_set = false, l_set = false, previously_set_l = false, previously_unset_l = false, previously_set_k = false, previously_unset_k = false;
 463
 464         int MOD_RESULT = 0;
 465
 466         if (IS_LOCAL(user))
 467         {
 468                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,chan,AC_GENERAL_MODE));
 469                 if (MOD_RESULT == ACR_DENY)
 470                         return;
 471         }
 472
 473         char* modelist = parameters[1];         /* mode list, e.g. +oo-o *
 474                                                  * parameters[2] onwards are parameters for
 475                                                  * modes that require them :) */
 476         *outlist = *modelist;
 477         char* outl = outlist+1;
 478
 479         mdir = (*modelist == '+');
 480
 481         log(DEBUG,"process_modes: modelist: %s",modelist);
 482
 483         std::string tidied = this->CompressModes(modelist,true);
 484         strlcpy(modelist,tidied.c_str(),MAXBUF);
 485
 486         int len = tidied.length();
 487         while (modelist[len-1] == ' ')
 488                 modelist[--len] = '\0';
 489
 490         for (char* modechar = (modelist + 1); *modechar; ptr++, modechar++)
 491         {
 492                 r = NULL;
 493
 494                 /* If we have more than MAXMODES changes in one line,
 495                  * drop all after the MAXMODES
 496                  */
 497                 if (pc > MAXMODES-1)
 498                         break;
 499
 500
 501
 502                 switch (*modechar)
 503                 {
 504                         case '-':
 505                                 *outl++ = '-';
 506                                 mdir = 0;
 507                         break;
 508
 509                         case '+':
 510                                 *outl++ = '+';
 511                                 mdir = 1;
 512                         break;
 513
 514                         case 'o':
 515                                 log(DEBUG,"Ops");
 516                                 if ((param >= pcnt)) break;
 517                                 log(DEBUG,"Enough parameters left");
 518                                 r = NULL;
 519                                 if (mdir == 1)
 520                                 {
 521                                         MOD_RESULT = 0;
 522                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1));
 523                                         if (!MOD_RESULT)
 524                                         {
 525                                                 r = GiveOps(user,parameters[param++],chan,status);
 526                                         }
 527                                         else param++;
 528                                 }
 529                                 else
 530                                 {
 531                                         MOD_RESULT = 0;
 532                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1));
 533                                         if (!MOD_RESULT)
 534                                         {
 535                                                 r = TakeOps(user,parameters[param++],chan,status);
 536                                         }
 537                                         else param++;
 538                                 }
 539                                 if (r)
 540                                 {
 541                                         *outl++ = 'o';
 542                                         outpars[pc++] = r;
 543                                 }
 544                         break;
 545
 546                         case 'h':
 547                                 if (((param >= pcnt)) || (!Config->AllowHalfop)) break;
 548                                 r = NULL;
 549                                 if (mdir == 1)
 550                                 {
 551                                         MOD_RESULT = 0;
 552                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1));
 553                                         if (!MOD_RESULT)
 554                                         {
 555                                                 r = GiveHops(user,parameters[param++],chan,status);
 556                                         }
 557                                         else param++;
 558                                 }
 559                                 else
 560                                 {
 561                                         MOD_RESULT = 0;
 562                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1));
 563                                         if (!MOD_RESULT)
 564                                         {
 565                                                 r = TakeHops(user,parameters[param++],chan,status);
 566                                         }
 567                                         else param++;
 568                                 }
 569                                 if (r)
 570                                 {
 571                                         *outl++ = 'h';
 572                                         outpars[pc++] = r;
 573                                 }
 574                         break;
 575
 576
 577                         case 'v':
 578                                         if ((param >= pcnt)) break;
 579                                         r = NULL;
 580                                         if (mdir == 1)
 581                                         {
 582                                                 MOD_RESULT = 0;
 583                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1));
 584                                                 if (!MOD_RESULT)
 585                                                 {
 586                                                         r = GiveVoice(user,parameters[param++],chan,status);
 587                                                 }
 588                                                 else param++;
 589                                         }
 590                                         else
 591                                         {
 592                                                 MOD_RESULT = 0;
 593                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1));
 594                                                 if (!MOD_RESULT)
 595                                                 {
 596                                                         r = TakeVoice(user,parameters[param++],chan,status);
 597                                                 }
 598                                                 else param++;
 599                                         }
 600                                         if (r)
 601                                         {
 602                                                 *outl++ = 'v';
 603                                                 outpars[pc++] = r;
 604                                         }
 605                         break;
 606
 607                         case 'b':
 608                                 if ((param >= pcnt)) break;
 609                                 r = NULL;
 610                                 if (mdir == 1)
 611                                 {
 612                                         MOD_RESULT = 0;
 613                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1));
 614                                         if (!MOD_RESULT)
 615                                         {
 616                                                 r = AddBan(user,parameters[param++],chan,status);
 617                                         }
 618                                         else param++;
 619                                 }
 620                                 else
 621                                 {
 622                                         MOD_RESULT = 0;
 623                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1));
 624                                         if (!MOD_RESULT)
 625                                         {
 626                                                 r = TakeBan(user,parameters[param++],chan,status);
 627                                         }
 628                                         else param++;
 629                                 }
 630                                 if (r)
 631                                 {
 632                                         *outl++ = 'b';
 633                                         outpars[pc++] = parameters[param-1];
 634                                 }
 635                         break;
 636
 637
 638                         case 'k':
 639                                 if ((param >= pcnt))
 640                                         break;
 641
 642                                 if (mdir == 1)
 643                                 {
 644                                         if (k_set)
 645                                                 break;
 646
 647                                         if (previously_unset_k)
 648                                                 break;
 649                                         previously_set_k = true;
 650
 651                                         if (!*chan->key)
 652                                         {
 653                                                 MOD_RESULT = 0;
 654                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1));
 655                                                 if (!MOD_RESULT)
 656                                                 {
 657                                                         *outl++ = 'k';
 658                                                         char key[MAXBUF];
 659                                                         strlcpy(key,parameters[param++],32);
 660                                                         outpars[pc++] = key;
 661                                                         strlcpy(chan->key,key,MAXBUF);
 662                                                         k_set = true;
 663                                                 }
 664                                                 else param++;
 665                                         }
 666                                 }
 667                                 else
 668                                 {
 669                                         /* checks on -k are case sensitive and only accurate to the
 670                                                    first 32 characters */
 671                                         if (previously_set_k)
 672                                                 break;
 673                                         previously_unset_k = true;
 674
 675                                         char key[MAXBUF];
 676                                         MOD_RESULT = 0;
 677                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 678                                         if (!MOD_RESULT)
 679                                         {
 680                                                 strlcpy(key,parameters[param++],32);
 681                                                 /* only allow -k if correct key given */
 682                                                 if (!strcmp(chan->key,key))
 683                                                 {
 684                                                         *outl++ = 'k';
 685                                                         *chan->key = 0;
 686                                                         outpars[pc++] = key;
 687                                                 }
 688                                         }
 689                                         else param++;
 690                                 }
 691                         break;
 692
 693                         case 'l':
 694                                 if (mdir == 0)
 695                                 {
 696                                         if (previously_set_l)
 697                                                 break;
 698                                         previously_unset_l = true;
 699                                         MOD_RESULT = 0;
 700                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 701                                         if (!MOD_RESULT)
 702                                         {
 703                                                 if (chan->limit)
 704                                                 {
 705                                                         *outl++ = 'l';
 706                                                         chan->limit = 0;
 707                                                 }
 708                                         }
 709                                 }
 710
 711                                 if ((param >= pcnt)) break;
 712                                 if (mdir == 1)
 713                                 {
 714                                         if (l_set)
 715                                                 break;
 716                                         if (previously_unset_l)
 717                                                 break;
 718                                         previously_set_l = true;
 719                                         bool invalid = false;
 720                                         for (char* f = parameters[param]; *f; f++)
 721                                         {
 722                                                 if ((*f < '0') || (*f > '9'))
 723                                                 {
 724                                                         invalid = true;
 725                                                 }
 726                                         }
 727                                         /* If the limit is < 1, or the new limit is the current limit, dont allow */
 728                                         if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 729                                         {
 730                                                 invalid = true;
 731                                         }
 732
 733                                         if (invalid)
 734                                                 break;
 735
 736                                         MOD_RESULT = 0;
 737                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 738                                         if (!MOD_RESULT)
 739                                         {
 740
 741                                                 chan->limit = atoi(parameters[param]);
 742
 743                                                 // reported by mech: large values cause underflow
 744                                                 if (chan->limit < 0)
 745                                                         chan->limit = 0x7FFF;
 746                                         }
 747
 748                                         if (chan->limit)
 749                                         {
 750                                                 *outl++ = 'l';
 751                                                 outpars[pc++] = parameters[param++];
 752                                                 l_set = true;
 753                                         }
 754                                 }
 755                         break;
 756
 757                         case 'i':
 758                                 MOD_RESULT = 0;
 759                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 760                                 if (!MOD_RESULT)
 761                                 {
 762                                         if (mdir)
 763                                         {
 764                                                 if (!(chan->binarymodes & CM_INVITEONLY)) *outl++ = 'i';
 765                                                 chan->binarymodes |= CM_INVITEONLY;
 766                                         }
 767                                         else
 768                                         {
 769                                                 if (chan->binarymodes & CM_INVITEONLY) *outl++ = 'i';
 770                                                 chan->binarymodes &= ~CM_INVITEONLY;
 771                                         }
 772                                 }
 773                         break;
 774
 775                         case 't':
 776                                 MOD_RESULT = 0;
 777                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 778                                 if (!MOD_RESULT)
 779                                 {
 780                                         if (mdir)
 781                                         {
 782                                                 if (!(chan->binarymodes & CM_TOPICLOCK)) *outl++ = 't';
 783                                                 chan->binarymodes |= CM_TOPICLOCK;
 784                                         }
 785                                         else
 786                                         {
 787                                                 if (chan->binarymodes & CM_TOPICLOCK) *outl++ = 't';
 788                                                 chan->binarymodes &= ~CM_TOPICLOCK;
 789                                         }
 790                                 }
 791                         break;
 792
 793                         case 'n':
 794                                 MOD_RESULT = 0;
 795                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 796                                 if (!MOD_RESULT)
 797                                 {
 798                                         if (mdir)
 799                                         {
 800                                                 if (!(chan->binarymodes & CM_NOEXTERNAL)) *outl++ = 'n';
 801                                                 chan->binarymodes |= CM_NOEXTERNAL;
 802                                         }
 803                                         else
 804                                         {
 805                                                 if (chan->binarymodes & CM_NOEXTERNAL) *outl++ = 'n';
 806                                                 chan->binarymodes &= ~CM_NOEXTERNAL;
 807                                         }
 808                                 }
 809                         break;
 810
 811                         case 'm':
 812                                 MOD_RESULT = 0;
 813                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 814                                 if (!MOD_RESULT)
 815                                 {
 816                                         if (mdir)
 817                                         {
 818                                                 if (!(chan->binarymodes & CM_MODERATED)) *outl++ = 'm';
 819                                                 chan->binarymodes |= CM_MODERATED;
 820                                         }
 821                                         else
 822                                         {
 823                                                 if (chan->binarymodes & CM_MODERATED) *outl++ = 'm';
 824                                                 chan->binarymodes &= ~CM_MODERATED;
 825                                         }
 826                                 }
 827                         break;
 828
 829                         case 's':
 830                                 MOD_RESULT = 0;
 831                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 832                                 if (!MOD_RESULT)
 833                                 {
 834                                         if (mdir)
 835                                         {
 836                                                 if (!(chan->binarymodes & CM_SECRET)) *outl++ = 's';
 837                                                 chan->binarymodes |= CM_SECRET;
 838                                                 if (chan->binarymodes & CM_PRIVATE)
 839                                                 {
 840                                                         chan->binarymodes &= ~CM_PRIVATE;
 841                                                         if (mdir)
 842                                                         {
 843                                                                 *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
 844                                                         }
 845                                                 }
 846                                         }
 847                                         else
 848                                         {
 849                                                 if (chan->binarymodes & CM_SECRET) *outl++ = 's';
 850                                                 chan->binarymodes &= ~CM_SECRET;
 851                                         }
 852                                 }
 853                         break;
 854
 855                         case 'p':
 856                                 MOD_RESULT = 0;
 857                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
 858                                 if (!MOD_RESULT)
 859                                 {
 860                                         if (mdir)
 861                                         {
 862                                                 if (!(chan->binarymodes & CM_PRIVATE)) *outl++ = 'p';
 863                                                 chan->binarymodes |= CM_PRIVATE;
 864                                                 if (chan->binarymodes & CM_SECRET)
 865                                                 {
 866                                                         chan->binarymodes &= ~CM_SECRET;
 867                                                         if (mdir)
 868                                                         {
 869                                                                 *outl++ = '-'; *outl++ = 's'; *outl++ = '+';
 870                                                         }
 871                                                 }
 872                                         }
 873                                         else
 874                                         {
 875                                                 if (chan->binarymodes & CM_PRIVATE) *outl++ = 'p';
 876                                                 chan->binarymodes &= ~CM_PRIVATE;
 877                                         }
 878                                 }
 879                         break;
 880
 881                         default:
 882                                 string_list p;
 883                                 p.clear();
 884                                 bool x = strchr(chan->custom_modes,*modechar);
 885                                 if ((!x && !mdir) || (x && mdir))
 886                                 {
 887                                         if (!ModeIsListMode(*modechar,MT_CHANNEL))
 888                                         {
 889                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
 890                                                 break;
 891                                         }
 892                                 }
 893                                 if (ModeDefined(*modechar,MT_CHANNEL))
 894                                 {
 895                                         /* A module has claimed this mode */
 896                                         if (param<pcnt)
 897                                         {
 898                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 899                                                 {
 900                                                         p.push_back(parameters[param]);
 901                                                 }
 902                                                 if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
 903                                                 {
 904                                                         p.push_back(parameters[param]);
 905                                                 }
 906                                         }
 907                                         bool handled = false;
 908                                         if (param>=pcnt)
 909                                         {
 910                                                 // we're supposed to have a parameter, but none was given... so dont handle the mode.
 911                                                 if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
 912                                                 {
 913                                                         log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
 914                                                         handled = true;
 915                                                         param++;
 916                                                 }
 917                                         }
 918                                         // BIG ASS IDIOTIC CODER WARNING!
 919                                         // Using OnRawMode on another modules mode's behavour
 920                                         // will confuse the crap out of admins! just because you CAN
 921                                         // do it, doesnt mean you SHOULD!
 922                                         MOD_RESULT = 0;
 923                                         std::string para = "";
 924                                         if (p.size())
 925                                                 para = p[0];
 926                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
 927                                         if (!MOD_RESULT)
 928                                         {
 929                                                         for (int i = 0; i <= MODCOUNT; i++)
 930                                                 {
 931                                                         if (!handled)
 932                                                         {
 933                                                                 int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
 934                                                                 if (t != 0)
 935                                                                 {
 936                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
 937                                                                         if (ModeIsListMode(*modechar,MT_CHANNEL))
 938                                                                         {
 939                                                                                 if (t == -1)
 940                                                                                 {
 941                                                                                         //pc++;
 942                                                                                         param++;
 943                                                                                 }
 944                                                                                 else
 945                                                                                 {
 946                                                                                         if (param < pcnt)
 947                                                                                         {
 948                                                                                                 *outl++ = *modechar;
 949                                                                                         }
 950                                                                                         outpars[pc++] = parameters[param++];
 951                                                                                 }
 952                                                                         }
 953                                                                         else
 954                                                                         {
 955                                                                                 if (param < pcnt)
 956                                                                                 {
 957                                                                                         *outl++ = *modechar;
 958                                                                                         chan->SetCustomMode(*modechar,mdir);
 959                                                                                         // include parameters in output if mode has them
 960                                                                                         if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 961                                                                                         {
 962                                                                                                 chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir);
 963                                                                                                 outpars[pc++] = parameters[param++];
 964                                                                                         }
 965                                                                                 }
 966                                                                         }
 967                                                                         // break, because only one module can handle the mode.
 968                                                                         handled = true;
 969                                                                 }
 970                                                         }
 971                                                 }
 972                                         }
 973                                 }
 974                                 else
 975                                 {
 976                                         WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
 977                                 }
 978                         break;
 979                 }
 980         }
 981
 982         /* Null terminate it now we're done */
 983         *outl = 0;
 984
 985
 986         /************ Fast, but confusing string tidying ************/
 987         outl = outlist;
 988         while (*outl && (*outl < 'A'))
 989                 outl++;
 990         /* outl now points to the first mode character after +'s and -'s */
 991         outl--;
 992         /* Now points at first mode-modifier + or - symbol */
 993         char* trim = outl;
 994         /* Now we tidy off any trailing -'s etc */
 995         while (*trim++);
 996         trim--;
 997         while ((*--trim == '+') || (*trim == '-'))
 998                 *trim = 0;
 999         /************ Done wih the string tidy functions ************/
1000
1001
1002         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1003         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1004         {
1005                 for (ptr = 0; ptr < pc; ptr++)
1006                 {
1007                         charlcat(outl,' ',MAXBUF);
1008                         strlcat(outl,outpars[ptr],MAXBUF-1);
1009                 }
1010                 if (local)
1011                 {
1012                         log(DEBUG,"Local mode change");
1013                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1014                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1015                 }
1016                 else
1017                 {
1018                         if (servermode)
1019                         {
1020                                 if (!silent)
1021                                 {
1022                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1023                                 }
1024
1025                         }
1026                         else
1027                         {
1028                                 if (!silent)
1029                                 {
1030                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1031                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1032                                 }
1033                         }
1034                 }
1035         }
1036 }
1037
1038 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1039
1040 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1041 {
1042         bool sourceoper = (strchr(sourcemodes,'o') != NULL);
1043         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1044         // Servers can +o and -o arbitrarily
1045         if ((serveroverride == true) && (umode == 'o'))
1046         {
1047                 return true;
1048         }
1049         // RFC1459 specified modes
1050         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1051         {
1052                 /* umode allowed by RFC1459 scemantics */
1053                 return true;
1054         }
1055
1056         /* user may not +o themselves or others, but an oper may de-oper other opers or themselves */
1057         if (sourceoper && !adding)
1058         {
1059                 return true;
1060         }
1061         else if (umode == 'o')
1062         {
1063                 /* Bad oper, bad bad! */
1064                 return false;
1065         }
1066
1067         /* process any module-defined modes that need oper */
1068         if ((ModeDefinedOper(umode,MT_CLIENT)) && (sourceoper))
1069         {
1070                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1071                 return true;
1072         }
1073         else if (ModeDefined(umode,MT_CLIENT))
1074         {
1075                 // process any module-defined modes that don't need oper
1076                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1077                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!sourceoper))
1078                 {
1079                         // no, this mode needs oper, and this user 'aint got what it takes!
1080                         return false;
1081                 }
1082                 return true;
1083         }
1084
1085         // anything else - return false.
1086         log(DEBUG,"umode %c not known by any ruleset",umode);
1087         return false;
1088 }
1089
1090 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1091 {
1092         userrec* s2;
1093         bool faked = false;
1094         if (!source)
1095         {
1096                 s2 = new userrec;
1097                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1098                 *s2->modes = 'o';
1099                 *(s2->modes+1) = 0;
1100                 s2->fd = -1;
1101                 source = s2;
1102                 faked = true;
1103         }
1104         string_list p;
1105         p.clear();
1106         if (ModeDefined(umode,MT_CLIENT))
1107         {
1108                 for (int i = 0; i <= MODCOUNT; i++)
1109                 {
1110                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1111                         {
1112                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1113                                 return true;
1114                         }
1115                 }
1116                 log(DEBUG,"No module claims umode %c",umode);
1117                 if (faked)
1118                 {
1119                         delete s2;
1120                         source = NULL;
1121                 }
1122                 return false;
1123         }
1124         else
1125         {
1126                 if (faked)
1127                 {
1128                         delete s2;
1129                         source = NULL;
1130                 }
1131                 return false;
1132         }
1133 }
1134
1135 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1136 {
1137         chanrec* Ptr;
1138         userrec* dest = Find(parameters[0]);
1139         int can_change;
1140         int direction = 1;
1141         char outpars[MAXBUF];
1142         bool next_ok = true;
1143
1144         if (!user)
1145                 return;
1146
1147         if ((dest) && (pcnt == 1))
1148         {
1149                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1150                 return;
1151         }
1152         else if ((dest) && (pcnt > 1))
1153         {
1154                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1155                 parameters[1] = (char*)tidied.c_str();
1156
1157                 char dmodes[MAXBUF];
1158                 strlcpy(dmodes,dest->modes,MAXMODES);
1159                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1160
1161                 can_change = 0;
1162                 if (user != dest)
1163                 {
1164                         if ((*user->oper) || (is_uline(user->server)))
1165                         {
1166                                 can_change = 1;
1167                         }
1168                 }
1169                 else
1170                 {
1171                         can_change = 1;
1172                 }
1173                 if (!can_change)
1174                 {
1175                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1176                         return;
1177                 }
1178
1179                 outpars[0] = *parameters[1];
1180                 outpars[1] = 0;
1181                 direction = (*parameters[1] == '+');
1182
1183                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1184                         return;
1185
1186                 for (char* i = parameters[1]; *i; i++)
1187                 {
1188                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1189                                 next_ok = true;
1190
1191                         switch (*i)
1192                         {
1193                                 case ' ':
1194                                 continue;
1195
1196                                 case '+':
1197                                         if ((direction != 1) && (next_ok))
1198                                         {
1199                                                 charlcat(outpars,'+',MAXBUF);
1200                                                 next_ok = false;
1201                                         }
1202                                         direction = 1;
1203                                 break;
1204
1205                                 case '-':
1206                                         if ((direction != 0) && (next_ok))
1207                                         {
1208                                                 charlcat(outpars,'-',MAXBUF);
1209                                                 next_ok = false;
1210                                         }
1211                                         direction = 0;
1212                                 break;
1213
1214                                 default:
1215                                         can_change = 0;
1216                                         if (*user->oper)
1217                                         {
1218                                                 can_change = 1;
1219                                         }
1220                                         else
1221                                         {
1222                                                 if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1223                                                 {
1224                                                         can_change = 1;
1225                                                 }
1226                                         }
1227                                         if (can_change)
1228                                         {
1229                                                 if (direction == 1)
1230                                                 {
1231                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1232                                                         {
1233                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1234                                                                 {
1235                                                                         charlcat(dmodes,*i,53);
1236                                                                         charlcat(outpars,*i,MAXMODES);
1237                                                                         if (*i == 'o')
1238                                                                         {
1239                                                                                 FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1240                                                                         }
1241                                                                 }
1242                                                         }
1243                                                 }
1244                                                 else
1245                                                 {
1246                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1247                                                         {
1248                                                                 if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1249                                                                 {
1250                                                                         charlcat(outpars,*i,MAXMODES);
1251                                                                         charremove(dmodes,*i);
1252                                                                         if (*i == 'o')
1253                                                                         {
1254                                                                                 *dest->oper = 0;
1255                                                                                 DeleteOper(dest);
1256                                                                         }
1257                                                                 }
1258                                                         }
1259                                                 }
1260                                         }
1261                                 break;
1262                         }
1263                 }
1264                 if (*outpars)
1265                 {
1266                         char b[MAXBUF];
1267                         char* z = b;
1268
1269                         for (char* i = outpars; *i;)
1270                         {
1271                                 *z++ = *i++;
1272                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1273                                 {
1274                                         // someones playing silly buggers and trying
1275                                         // to put a +- or -+ into the line...
1276                                         i++;
1277                                 }
1278                                 if (!*(i+1))
1279                                 {
1280                                         // Someone's trying to make the last character in
1281                                         // the line be a + or - symbol.
1282                                         if ((*i == '-') || (*i == '+'))
1283                                         {
1284                                                 i++;
1285                                         }
1286                                 }
1287                         }
1288                         *z = 0;
1289
1290                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1291                         {
1292                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1293                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1294                         }
1295
1296                         log(DEBUG,"Stripped mode line");
1297                         log(DEBUG,"Line dest is now %s",dmodes);
1298                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1299
1300                 }
1301
1302                 return;
1303         }
1304         else
1305         {
1306                 Ptr = FindChan(parameters[0]);
1307                 if (Ptr)
1308                 {
1309                         if (pcnt == 1)
1310                         {
1311                                 /* just /modes #channel */
1312                                 WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr,has_channel(user,Ptr)));
1313                                 WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1314                                 return;
1315                         }
1316                         else if (pcnt == 2)
1317                         {
1318                                 char* mode = parameters[1];
1319                                 if (*mode == '+')
1320                                         mode++;
1321                                 int MOD_RESULT = 0;
1322                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, Ptr, *mode, "", false, 0));
1323                                 if (!MOD_RESULT)
1324                                 {
1325                                         if (*mode == 'b')
1326                                         {
1327                                                 for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1328                                                 {
1329                                                         WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
1330                                                 }
1331                                                 WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
1332                                                 return;
1333                                         }
1334                                         if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1335                                         {
1336                                                 // list of items for an extmode
1337                                                 log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1338                                                 FOREACH_MOD(I_OnSendList,OnSendList(user,Ptr,*mode));
1339                                                 return;
1340                                         }
1341                                 }
1342                         }
1343
1344                         if (((Ptr) && (!has_channel(user,Ptr))) && (!is_uline(user->server)) && (IS_LOCAL(user)))
1345                         {
1346                                 WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, Ptr->name);
1347                                 return;
1348                         }
1349
1350                         if (Ptr)
1351                         {
1352                                 int MOD_RESULT = 0;
1353                                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,Ptr,AC_GENERAL_MODE));
1354
1355                                 if (MOD_RESULT == ACR_DENY)
1356                                         return;
1357                                 if (MOD_RESULT == ACR_DEFAULT)
1358                                 {
1359                                         if ((cstatus(user,Ptr) < STATUS_HOP) && (IS_LOCAL(user)))
1360                                         {
1361                                                 WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name);
1362                                                 return;
1363                                         }
1364                                 }
1365
1366                                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false,false);
1367                         }
1368                 }
1369                 else
1370                 {
1371                         WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1372                 }
1373         }
1374 }
1375
1376
1377
1378
1379 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1380 {
1381         chanrec* Ptr;
1382         userrec* dest = Find(parameters[0]);
1383         int can_change;
1384         int direction = 1;
1385         char outpars[MAXBUF];
1386         bool next_ok = true;
1387
1388         if ((dest) && (pcnt > 1))
1389         {
1390                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1391                 parameters[1] = (char*)tidied.c_str();
1392
1393                 char dmodes[MAXBUF];
1394                 strlcpy(dmodes,dest->modes,MAXBUF);
1395
1396                 outpars[0] = *parameters[1];
1397                 outpars[1] = 0;
1398                 direction = (*parameters[1] == '+');
1399
1400                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1401                         return;
1402
1403                 for (char* i = parameters[1]; *i; i++)
1404                 {
1405                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1406                                 next_ok = true;
1407
1408                         switch (*i)
1409                         {
1410                                 case ' ':
1411                                 continue;
1412
1413                                 case '+':
1414                                         if ((direction != 1) && (next_ok))
1415                                         {
1416                                                 next_ok = false;
1417                                                 charlcat(outpars,'+',MAXBUF);
1418                                         }
1419                                         direction = 1;
1420                                 break;
1421
1422                                 case '-':
1423                                         if ((direction != 0) && (next_ok))
1424                                         {
1425                                                 next_ok = false;
1426                                                 charlcat(outpars,'-',MAXBUF);
1427                                         }
1428                                         direction = 0;
1429                                 break;
1430
1431                                 default:
1432                                         log(DEBUG,"begin mode processing entry");
1433                                         can_change = 1;
1434                                         if (can_change)
1435                                         {
1436                                                 if (direction == 1)
1437                                                 {
1438                                                         log(DEBUG,"umode %c being added",*i);
1439                                                         if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1440                                                         {
1441                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1442                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1443                                                                 {
1444                                                                         charlcat(dmodes,*i,MAXBUF);
1445                                                                         charlcat(outpars,*i,53);
1446                                                                 }
1447                                                         }
1448                                                 }
1449                                                 else
1450                                                 {
1451                                                         // can only remove a mode they already have
1452                                                         log(DEBUG,"umode %c being removed",*i);
1453                                                         if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1454                                                         {
1455                                                                 log(DEBUG,"umode %c is an allowed umode",*i);
1456                                                                 if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)))
1457                                                                 {
1458                                                                         charlcat(outpars,*i,MAXBUF);
1459                                                                         charremove(dmodes,*i);
1460                                                                 }
1461                                                         }
1462                                                 }
1463                                         }
1464                                 break;
1465                         }
1466                 }
1467                 if (*outpars)
1468                 {
1469                         char b[MAXBUF];
1470                         char* z = b;
1471
1472                         for (char* i = outpars; *i;)
1473                         {
1474                                 *z++ = *i++;
1475                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1476                                 {
1477                                         // someones playing silly buggers and trying
1478                                         // to put a +- or -+ into the line...
1479                                         i++;
1480                                 }
1481                                 if (!*(i+1))
1482                                 {
1483                                         // Someone's trying to make the last character in
1484                                         // the line be a + or - symbol.
1485                                         if ((*i == '-') || (*i == '+'))
1486                                         {
1487                                                 i++;
1488                                         }
1489                                 }
1490                         }
1491                         *z = 0;
1492
1493                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1494                         {
1495                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1496                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1497                         }
1498
1499                         log(DEBUG,"Stripped mode line");
1500                         log(DEBUG,"Line dest is now %s",dmodes);
1501                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1502
1503                 }
1504
1505                 return;
1506         }
1507
1508         Ptr = FindChan(parameters[0]);
1509         if (Ptr)
1510         {
1511                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1512         }
1513         else
1514         {
1515                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1516         }
1517 }