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