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 (user->server == d->server)
 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)) && (IS_LOCAL(user)))
 151                                 {
 152                                         log(DEBUG,"%s cant give ops to %s because they have status %d and needs %d",user->nick,dest,status,STATUS_OP);
 153                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
 154                                         return NULL;
 155                                 }
 156                         }
 157                 }
 158
 159                 return this->Grant(d,chan,UCMODE_OP);
 160         }
 161         return NULL;
 162 }
 163
 164 char* ModeParser::GiveHops(userrec *user,char *dest,chanrec *chan,int status)
 165 {
 166         userrec *d = this->SanityChecks(user,dest,chan,status);
 167
 168         if (d)
 169         {
 170                 if (user->server == d->server)
 171                 {
 172                         int MOD_RESULT = 0;
 173                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_HALFOP));
 174
 175                         if (MOD_RESULT == ACR_DENY)
 176                                 return NULL;
 177                         if (MOD_RESULT == ACR_DEFAULT)
 178                         {
 179                                 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 180                                 {
 181                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
 182                                         return NULL;
 183                                 }
 184                         }
 185                 }
 186
 187                 return this->Grant(d,chan,UCMODE_HOP);
 188         }
 189         return NULL;
 190 }
 191
 192 char* ModeParser::GiveVoice(userrec *user,char *dest,chanrec *chan,int status)
 193 {
 194         userrec *d = this->SanityChecks(user,dest,chan,status);
 195
 196         if (d)
 197         {
 198                 if (user->server == d->server)
 199                 {
 200                         int MOD_RESULT = 0;
 201                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_VOICE));
 202
 203                         if (MOD_RESULT == ACR_DENY)
 204                                 return NULL;
 205                         if (MOD_RESULT == ACR_DEFAULT)
 206                         {
 207                                 if ((status < STATUS_HOP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 208                                 {
 209                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 210                                         return NULL;
 211                                 }
 212                         }
 213                 }
 214
 215                 return this->Grant(d,chan,UCMODE_VOICE);
 216         }
 217         return NULL;
 218 }
 219
 220 char* ModeParser::TakeOps(userrec *user,char *dest,chanrec *chan,int status)
 221 {
 222         userrec *d = this->SanityChecks(user,dest,chan,status);
 223
 224         if (d)
 225         {
 226                 if (user->server == d->server)
 227                 {
 228                         int MOD_RESULT = 0;
 229                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEOP));
 230
 231                         if (MOD_RESULT == ACR_DENY)
 232                                 return NULL;
 233                         if (MOD_RESULT == ACR_DEFAULT)
 234                         {
 235                                 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)) && (IS_LOCAL(user)))
 236                                 {
 237                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 238                                         return NULL;
 239                                 }
 240                         }
 241                 }
 242
 243                 return this->Revoke(d,chan,UCMODE_OP);
 244         }
 245         return NULL;
 246 }
 247
 248 char* ModeParser::TakeHops(userrec *user,char *dest,chanrec *chan,int status)
 249 {
 250         userrec *d = this->SanityChecks(user,dest,chan,status);
 251
 252         if (d)
 253         {
 254                 if (user->server == d->server)
 255                 {
 256                         int MOD_RESULT = 0;
 257                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEHALFOP));
 258
 259                         if (MOD_RESULT == ACR_DENY)
 260                                 return NULL;
 261                         if (MOD_RESULT == ACR_DEFAULT)
 262                         {
 263                                 /* Tweak by Brain suggested by w00t, allow a halfop to dehalfop themselves */
 264                                 if ((user != d) && ((status < STATUS_OP) && (!is_uline(user->server))) && (IS_LOCAL(user)))
 265                                 {
 266                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 267                                         return NULL;
 268                                 }
 269                         }
 270                 }
 271
 272                 return this->Revoke(d,chan,UCMODE_HOP);
 273         }
 274         return NULL;
 275 }
 276
 277 char* ModeParser::TakeVoice(userrec *user,char *dest,chanrec *chan,int status)
 278 {
 279         userrec *d = this->SanityChecks(user,dest,chan,status);
 280
 281         if (d)
 282         {
 283                 if (user->server == d->server)
 284                 {
 285                         int MOD_RESULT = 0;
 286                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEVOICE));
 287
 288                         if (MOD_RESULT == ACR_DENY)
 289                                 return NULL;
 290                         if (MOD_RESULT == ACR_DEFAULT)
 291                         {
 292                                 if ((status < STATUS_HOP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 293                                 {
 294                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 295                                         return NULL;
 296                                 }
 297                         }
 298                 }
 299
 300                 return this->Revoke(d,chan,UCMODE_VOICE);
 301         }
 302         return NULL;
 303 }
 304
 305 char* ModeParser::AddBan(userrec *user,char *dest,chanrec *chan,int status)
 306 {
 307         BanItem b;
 308         int toomanyexclamation = 0;
 309         int toomanyat = 0;
 310
 311         if ((!user) || (!dest) || (!chan) || (!*dest))
 312         {
 313                 log(DEFAULT,"*** BUG *** AddBan was given an invalid parameter");
 314                 return NULL;
 315         }
 316
 317         for (char* i = dest; *i; i++)
 318         {
 319                 if ((*i < 32) || (*i > 126))
 320                 {
 321                         return NULL;
 322                 }
 323                 else if (*i == '!')
 324                 {
 325                         toomanyexclamation++;
 326                 }
 327                 else if (*i == '@')
 328                 {
 329                         toomanyat++;
 330                 }
 331         }
 332
 333         if (toomanyexclamation != 1 || toomanyat != 1)
 334                 /*
 335                  * this stops sillyness like n!u!u!u@h, though note that most
 336                  * ircds don't actually verify banmask validity. --w00t
 337                  */
 338                 return NULL;
 339
 340         long maxbans = GetMaxBans(chan->name);
 341         if ((unsigned)chan->bans.size() > (unsigned)maxbans)
 342         {
 343                 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);
 344                 return NULL;
 345         }
 346
 347         log(DEBUG,"AddBan: %s %s",chan->name,user->nick);
 348
 349         int MOD_RESULT = 0;
 350         FOREACH_RESULT(I_OnAddBan,OnAddBan(user,chan,dest));
 351         if (MOD_RESULT)
 352                 return NULL;
 353
 354         TidyBan(dest);
 355         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 356         {
 357                 if (!strcasecmp(i->data,dest))
 358                 {
 359                         // dont allow a user to set the same ban twice
 360                         return NULL;
 361                 }
 362         }
 363
 364         b.set_time = TIME;
 365         strlcpy(b.data,dest,MAXBUF);
 366         if (*user->nick)
 367         {
 368                 strlcpy(b.set_by,user->nick,NICKMAX-1);
 369         }
 370         else
 371         {
 372                 strlcpy(b.set_by,Config->ServerName,NICKMAX-1);
 373         }
 374         chan->bans.push_back(b);
 375         return dest;
 376 }
 377
 378 char* ModeParser::TakeBan(userrec *user,char *dest,chanrec *chan,int status)
 379 {
 380         if ((!user) || (!dest) || (!chan) || (!*dest)) {
 381                 log(DEFAULT,"*** BUG *** TakeBan was given an invalid parameter");
 382                 return 0;
 383         }
 384
 385         log(DEBUG,"del_ban: %s %s",chan->name,user->nick);
 386         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 387         {
 388                 if (!strcasecmp(i->data,dest))
 389                 {
 390                         int MOD_RESULT = 0;
 391                         FOREACH_RESULT(I_OnDelBan,OnDelBan(user,chan,dest));
 392                         if (MOD_RESULT)
 393                                 return NULL;
 394                         chan->bans.erase(i);
 395                         return dest;
 396                 }
 397         }
 398         return NULL;
 399 }
 400
 401 // tidies up redundant modes, e.g. +nt-nt+i becomes +-+i,
 402 // a section further down the chain tidies up the +-+- crap.
 403 std::string ModeParser::CompressModes(std::string modes,bool channelmodes)
 404 {
 405         int counts[127];
 406         bool active[127];
 407         memset(counts,0,sizeof(counts));
 408         memset(active,0,sizeof(active));
 409         for (unsigned int i = 0; i < modes.length(); i++)
 410         {
 411                 if ((modes[i] == '+') || (modes[i] == '-'))
 412                         continue;
 413                 if (channelmodes)
 414                 {
 415                         if ((strchr("itnmsp",modes[i])) || ((ModeDefined(modes[i],MT_CHANNEL)) && (ModeDefinedOn(modes[i],MT_CHANNEL)==0) && (ModeDefinedOff(modes[i],MT_CHANNEL)==0)))
 416                         {
 417                                 log(DEBUG,"Tidy mode %c",modes[i]);
 418                                 counts[(unsigned int)modes[i]]++;
 419                                 active[(unsigned int)modes[i]] = true;
 420                         }
 421                 }
 422                 else
 423                 {
 424                         log(DEBUG,"Tidy mode %c",modes[i]);
 425                         counts[(unsigned int)modes[i]]++;
 426                         active[(unsigned int)modes[i]] = true;
 427                 }
 428         }
 429         for (int j = 65; j < 127; j++)
 430         {
 431                 if ((counts[j] > 1) && (active[j] == true))
 432                 {
 433                         static char v[2];
 434                         v[0] = (unsigned char)j;
 435                         v[1] = '\0';
 436                         std::string mode_str = v;
 437                         std::string::size_type pos = modes.find(mode_str);
 438                         if (pos != std::string::npos)
 439                         {
 440                                 log(DEBUG,"all occurances of mode %c to be deleted...",(unsigned char)j);
 441                                 while (modes.find(mode_str) != std::string::npos)
 442                                         modes.erase(modes.find(mode_str),1);
 443                                 log(DEBUG,"New mode line: %s",modes.c_str());
 444                         }
 445                 }
 446         }
 447         return modes;
 448 }
 449
 450 void ModeParser::ProcessModes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent, bool local)
 451 {
 452         if (!parameters) {
 453                 log(DEFAULT,"*** BUG *** process_modes was given an invalid parameter");
 454                 return;
 455         }
 456
 457         char outlist[MAXBUF];
 458         char *outpars[32];
 459         int param = 2;
 460         int pc = 0;
 461         int ptr = 0;
 462         int mdir = 1;
 463         char* r = NULL;
 464         bool k_set = false, l_set = false, previously_set_l = false, previously_unset_l = false, previously_set_k = false, previously_unset_k = false;
 465
 466         if (pcnt < 2)
 467         {
 468                 return;
 469         }
 470
 471         int MOD_RESULT = 0;
 472
 473         if (IS_LOCAL(user))
 474         {
 475                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,chan,AC_GENERAL_MODE));
 476                 if (MOD_RESULT == ACR_DENY)
 477                         return;
 478         }
 479
 480         log(DEBUG,"process_modes: start: parameters=%d",pcnt);
 481
 482         char* modelist = parameters[1];         /* mode list, e.g. +oo-o *
 483                                                  * parameters[2] onwards are parameters for
 484                                                  * modes that require them :) */
 485         *outlist = *modelist;
 486         char* outl = outlist+1;
 487
 488         mdir = (*modelist == '+');
 489
 490         log(DEBUG,"process_modes: modelist: %s",modelist);
 491
 492         std::string tidied = this->CompressModes(modelist,true);
 493         strlcpy(modelist,tidied.c_str(),MAXBUF);
 494
 495         int len = tidied.length();
 496         while (modelist[len-1] == ' ')
 497                 modelist[--len] = '\0';
 498
 499         bool next_cant_be_modifier = false;
 500         char* modechar;
 501
 502         for (modechar = (modelist + 1); *modechar; ptr++, modechar++)
 503         {
 504                 r = NULL;
 505
 506                 /* If we have more than MAXMODES changes in one line,
 507                  * drop all after the MAXMODES
 508                  */
 509                 if (pc > MAXMODES-1)
 510                         break;
 511
 512                 log(DEBUG,"Mode %c",*modechar);
 513
 514                 {
 515                         switch (*modechar)
 516                         {
 517                                 case '-':
 518                                         *outl++ = '-';
 519                                         mdir = 0;
 520                                         next_cant_be_modifier = true;
 521
 522                                 break;
 523
 524                                 case '+':
 525                                         *outl++ = '+';
 526                                         mdir = 1;
 527                                         next_cant_be_modifier = true;
 528                                 break;
 529
 530                                 case 'o':
 531                                         log(DEBUG,"Ops");
 532                                         if ((param >= pcnt)) break;
 533                                         log(DEBUG,"Enough parameters left");
 534                                         r = NULL;
 535                                         if (mdir == 1)
 536                                         {
 537                                                 MOD_RESULT = 0;
 538                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1));
 539                                                 if (!MOD_RESULT)
 540                                                 {
 541                                                         log(DEBUG,"calling GiveOps");
 542                                                         r = GiveOps(user,parameters[param++],chan,status);
 543                                                 }
 544                                                 else param++;
 545                                         }
 546                                         else
 547                                         {
 548                                                 MOD_RESULT = 0;
 549                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1));
 550                                                 if (!MOD_RESULT)
 551                                                 {
 552                                                         log(DEBUG,"calling TakeOps");
 553                                                         r = TakeOps(user,parameters[param++],chan,status);
 554                                                 }
 555                                                 else param++;
 556                                         }
 557                                         if (r)
 558                                         {
 559                                                 *outl++ = 'o';
 560                                                 outpars[pc++] = r;
 561                                         }
 562                                 break;
 563
 564                                 case 'h':
 565                                         if (((param >= pcnt)) || (!Config->AllowHalfop)) break;
 566                                         r = NULL;
 567                                         if (mdir == 1)
 568                                         {
 569                                                 MOD_RESULT = 0;
 570                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1));
 571                                                 if (!MOD_RESULT)
 572                                                 {
 573                                                         r = GiveHops(user,parameters[param++],chan,status);
 574                                                 }
 575                                                 else param++;
 576                                         }
 577                                         else
 578                                         {
 579                                                 MOD_RESULT = 0;
 580                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1));
 581                                                 if (!MOD_RESULT)
 582                                                 {
 583                                                         r = TakeHops(user,parameters[param++],chan,status);
 584                                                 }
 585                                                 else param++;
 586                                         }
 587                                         if (r)
 588                                         {
 589                                                 *outl++ = 'h';
 590                                                 outpars[pc++] = r;
 591                                         }
 592                                 break;
 593
 594
 595                                 case 'v':
 596                                         if ((param >= pcnt)) break;
 597                                         r = NULL;
 598                                         if (mdir == 1)
 599                                         {
 600                                                 MOD_RESULT = 0;
 601                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1));
 602                                                 if (!MOD_RESULT)
 603                                                 {
 604                                                         r = GiveVoice(user,parameters[param++],chan,status);
 605                                                 }
 606                                                 else param++;
 607                                         }
 608                                         else
 609                                         {
 610                                                 MOD_RESULT = 0;
 611                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1));
 612                                                 if (!MOD_RESULT)
 613                                                 {
 614                                                         r = TakeVoice(user,parameters[param++],chan,status);
 615                                                 }
 616                                                 else param++;
 617                                         }
 618                                         if (r)
 619                                         {
 620                                                 *outl++ = 'v';
 621                                                 outpars[pc++] = r;
 622                                         }
 623                                 break;
 624
 625                                 case 'b':
 626                                         if ((param >= pcnt)) break;
 627                                         r = NULL;
 628                                         if (mdir == 1)
 629                                         {
 630                                                 MOD_RESULT = 0;
 631                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1));
 632                                                 if (!MOD_RESULT)
 633                                                 {
 634                                                         r = AddBan(user,parameters[param++],chan,status);
 635                                                 }
 636                                                 else param++;
 637                                         }
 638                                         else
 639                                         {
 640                                                 MOD_RESULT = 0;
 641                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1));
 642                                                 if (!MOD_RESULT)
 643                                                 {
 644                                                         r = TakeBan(user,parameters[param++],chan,status);
 645                                                 }
 646                                                 else param++;
 647                                         }
 648                                         if (r)
 649                                         {
 650                                                 *outl++ = 'b';
 651                                                 outpars[pc++] = parameters[param-1];
 652                                         }
 653                                 break;
 654
 655
 656                                 case 'k':
 657                                         if ((param >= pcnt))
 658                                                 break;
 659
 660                                         if (mdir == 1)
 661                                         {
 662                                                 if (k_set)
 663                                                         break;
 664
 665                                                 if (previously_unset_k)
 666                                                         break;
 667                                                 previously_set_k = true;
 668
 669                                                 if (!*chan->key)
 670                                                 {
 671                                                         MOD_RESULT = 0;
 672                                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1));
 673                                                         if (!MOD_RESULT)
 674                                                         {
 675                                                                 *outl++ = 'k';
 676                                                                 char key[MAXBUF];
 677                                                                 strlcpy(key,parameters[param++],32);
 678                                                                 outpars[pc++] = key;
 679                                                                 strlcpy(chan->key,key,MAXBUF);
 680                                                                 k_set = true;
 681                                                         }
 682                                                         else param++;
 683                                                 }
 684                                         }
 685                                         else
 686                                         {
 687                                                 /* checks on -k are case sensitive and only accurate to the
 688                                                    first 32 characters */
 689                                                 if (previously_set_k)
 690                                                         break;
 691                                                 previously_unset_k = true;
 692
 693                                                 char key[MAXBUF];
 694                                                 MOD_RESULT = 0;
 695                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 696                                                 if (!MOD_RESULT)
 697                                                 {
 698                                                         strlcpy(key,parameters[param++],32);
 699                                                         /* only allow -k if correct key given */
 700                                                         if (!strcmp(chan->key,key))
 701                                                         {
 702                                                                 *outl++ = 'k';
 703                                                                 *chan->key = 0;
 704                                                                 outpars[pc++] = key;
 705                                                         }
 706                                                 }
 707                                                 else param++;
 708                                         }
 709                                 break;
 710
 711                                 case 'l':
 712                                         if (mdir == 0)
 713                                         {
 714                                                 if (previously_set_l)
 715                                                         break;
 716                                                 previously_unset_l = true;
 717                                                 MOD_RESULT = 0;
 718                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 719                                                 if (!MOD_RESULT)
 720                                                 {
 721                                                         if (chan->limit)
 722                                                         {
 723                                                                 *outl++ = 'l';
 724                                                                 chan->limit = 0;
 725                                                         }
 726                                                 }
 727                                         }
 728
 729                                         if ((param >= pcnt)) break;
 730                                         if (mdir == 1)
 731                                         {
 732                                                 if (l_set)
 733                                                         break;
 734                                                 if (previously_unset_l)
 735                                                         break;
 736                                                 previously_set_l = true;
 737                                                 bool invalid = false;
 738                                                 for (char* f = parameters[param]; *f; f++)
 739                                                 {
 740                                                         if ((*f < '0') || (*f > '9'))
 741                                                         {
 742                                                                 invalid = true;
 743                                                         }
 744                                                 }
 745                                                 /* If the limit is < 1, or the new limit is the current limit, dont allow */
 746                                                 if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 747                                                 {
 748                                                         invalid = true;
 749                                                 }
 750
 751                                                 if (invalid)
 752                                                         break;
 753
 754                                                 MOD_RESULT = 0;
 755                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 756                                                 if (!MOD_RESULT)
 757                                                 {
 758
 759                                                         chan->limit = atoi(parameters[param]);
 760
 761                                                         // reported by mech: large values cause underflow
 762                                                         if (chan->limit < 0)
 763                                                                 chan->limit = 0x7FFF;
 764                                                 }
 765
 766                                                 if (chan->limit)
 767                                                 {
 768                                                         *outl++ = 'l';
 769                                                         outpars[pc++] = parameters[param++];
 770                                                         l_set = true;
 771                                                 }
 772                                         }
 773                                 break;
 774
 775                                 case 'i':
 776                                         MOD_RESULT = 0;
 777                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 778                                         if (!MOD_RESULT)
 779                                         {
 780                                                 if (mdir)
 781                                                 {
 782                                                         if (!(chan->binarymodes & CM_INVITEONLY)) *outl++ = 'i';
 783                                                         chan->binarymodes |= CM_INVITEONLY;
 784                                                 }
 785                                                 else
 786                                                 {
 787                                                         if (chan->binarymodes & CM_INVITEONLY) *outl++ = 'i';
 788                                                         chan->binarymodes &= ~CM_INVITEONLY;
 789                                                 }
 790                                         }
 791                                 break;
 792
 793                                 case 't':
 794                                         MOD_RESULT = 0;
 795                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 796                                         if (!MOD_RESULT)
 797                                         {
 798                                                 if (mdir)
 799                                                 {
 800                                                         if (!(chan->binarymodes & CM_TOPICLOCK)) *outl++ = 't';
 801                                                         chan->binarymodes |= CM_TOPICLOCK;
 802                                                 }
 803                                                 else
 804                                                 {
 805                                                         if (chan->binarymodes & CM_TOPICLOCK) *outl++ = 't';
 806                                                         chan->binarymodes &= ~CM_TOPICLOCK;
 807                                                 }
 808                                         }
 809                                 break;
 810
 811                                 case 'n':
 812                                         MOD_RESULT = 0;
 813                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 814                                         if (!MOD_RESULT)
 815                                         {
 816                                                 if (mdir)
 817                                                 {
 818                                                         if (!(chan->binarymodes & CM_NOEXTERNAL)) *outl++ = 'n';
 819                                                         chan->binarymodes |= CM_NOEXTERNAL;
 820                                                 }
 821                                                 else
 822                                                 {
 823                                                         if (chan->binarymodes & CM_NOEXTERNAL) *outl++ = 'n';
 824                                                         chan->binarymodes &= ~CM_NOEXTERNAL;
 825                                                 }
 826                                         }
 827                                 break;
 828
 829                                 case 'm':
 830                                         MOD_RESULT = 0;
 831                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 832                                         if (!MOD_RESULT)
 833                                         {
 834                                                 if (mdir)
 835                                                 {
 836                                                         if (!(chan->binarymodes & CM_MODERATED)) *outl++ = 'm';
 837                                                         chan->binarymodes |= CM_MODERATED;
 838                                                 }
 839                                                 else
 840                                                 {
 841                                                         if (chan->binarymodes & CM_MODERATED) *outl++ = 'm';
 842                                                         chan->binarymodes &= ~CM_MODERATED;
 843                                                 }
 844                                         }
 845                                 break;
 846
 847                                 case 's':
 848                                         MOD_RESULT = 0;
 849                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 850                                         if (!MOD_RESULT)
 851                                         {
 852                                                 if (mdir)
 853                                                 {
 854                                                         if (!(chan->binarymodes & CM_SECRET)) *outl++ = 's';
 855                                                         chan->binarymodes |= CM_SECRET;
 856                                                         if (chan->binarymodes & CM_PRIVATE)
 857                                                         {
 858                                                                 chan->binarymodes &= ~CM_PRIVATE;
 859                                                                 if (mdir)
 860                                                                 {
 861                                                                         *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
 862                                                                 }
 863                                                         }
 864                                                 }
 865                                                 else
 866                                                 {
 867                                                         if (chan->binarymodes & CM_SECRET) *outl++ = 's';
 868                                                         chan->binarymodes &= ~CM_SECRET;
 869                                                 }
 870                                         }
 871                                 break;
 872
 873                                 case 'p':
 874                                         MOD_RESULT = 0;
 875                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
 876                                         if (!MOD_RESULT)
 877                                         {
 878                                                 if (mdir)
 879                                                 {
 880                                                         if (!(chan->binarymodes & CM_PRIVATE)) *outl++ = 'p';
 881                                                         chan->binarymodes |= CM_PRIVATE;
 882                                                         if (chan->binarymodes & CM_SECRET)
 883                                                         {
 884                                                                 chan->binarymodes &= ~CM_SECRET;
 885                                                                 if (mdir)
 886                                                                 {
 887                                                                         *outl++ = '-'; *outl++ = 's'; *outl++ = '+';
 888                                                                 }
 889                                                         }
 890                                                 }
 891                                                 else
 892                                                 {
 893                                                         if (chan->binarymodes & CM_PRIVATE) *outl++ = 'p';
 894                                                         chan->binarymodes &= ~CM_PRIVATE;
 895                                                 }
 896                                         }
 897                                 break;
 898
 899                                 default:
 900                                         log(DEBUG,"Preprocessing custom mode %c: modelist: %s",*modechar,chan->custom_modes);
 901                                         string_list p;
 902                                         p.clear();
 903                                         if (((!strchr(chan->custom_modes,*modechar)) && (!mdir)) || ((strchr(chan->custom_modes,*modechar)) && (mdir)))
 904                                         {
 905                                                 if (!ModeIsListMode(*modechar,MT_CHANNEL))
 906                                                 {
 907                                                         log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
 908                                                         break;
 909                                                 }
 910                                         }
 911                                         if (ModeDefined(*modechar,MT_CHANNEL))
 912                                         {
 913                                                 log(DEBUG,"A module has claimed this mode");
 914                                                 if (param<pcnt)
 915                                                 {
 916                                                         if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 917                                                         {
 918                                                                 p.push_back(parameters[param]);
 919                                                         }
 920                                                         if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
 921                                                         {
 922                                                                 p.push_back(parameters[param]);
 923                                                         }
 924                                                 }
 925                                                 bool handled = false;
 926                                                 if (param>=pcnt)
 927                                                 {
 928                                                         // we're supposed to have a parameter, but none was given... so dont handle the mode.
 929                                                         if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
 930                                                         {
 931                                                                 log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
 932                                                                 handled = true;
 933                                                                 param++;
 934                                                         }
 935                                                 }
 936
 937                                                 // BIG ASS IDIOTIC CODER WARNING!
 938                                                 // Using OnRawMode on another modules mode's behavour
 939                                                 // will confuse the crap out of admins! just because you CAN
 940                                                 // do it, doesnt mean you SHOULD!
 941                                                 MOD_RESULT = 0;
 942                                                 std::string para = "";
 943                                                 if (p.size())
 944                                                         para = p[0];
 945                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
 946                                                 if (!MOD_RESULT)
 947                                                 {
 948                                                         for (int i = 0; i <= MODCOUNT; i++)
 949                                                         {
 950                                                                 if (!handled)
 951                                                                 {
 952                                                                         int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
 953                                                                         if (t != 0)
 954                                                                         {
 955                                                                                 log(DEBUG,"OnExtendedMode returned nonzero for a module");
 956                                                                                 if (ModeIsListMode(*modechar,MT_CHANNEL))
 957                                                                                 {
 958                                                                                         if (t == -1)
 959                                                                                         {
 960                                                                                                 //pc++;
 961                                                                                                 param++;
 962                                                                                         }
 963                                                                                         else
 964                                                                                         {
 965                                                                                                 if (param < pcnt)
 966                                                                                                 {
 967                                                                                                         *outl++ = *modechar;
 968                                                                                                 }
 969                                                                                                 outpars[pc++] = parameters[param++];
 970                                                                                         }
 971                                                                                 }
 972                                                                                 else
 973                                                                                 {
 974                                                                                         if (param < pcnt)
 975                                                                                         {
 976                                                                                                 *outl++ = *modechar;
 977                                                                                                 chan->SetCustomMode(*modechar,mdir);
 978                                                                                                 // include parameters in output if mode has them
 979                                                                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 980                                                                                                 {
 981                                                                                                         chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir);
 982                                                                                                         outpars[pc++] = parameters[param++];
 983                                                                                                 }
 984                                                                                         }
 985                                                                                 }
 986                                                                                 // break, because only one module can handle the mode.
 987                                                                                 handled = true;
 988                                                                         }
 989                                                                 }
 990                                                         }
 991                                                 }
 992                                         }
 993                                         else
 994                                         {
 995                                                 WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
 996                                         }
 997                                 break;
 998
 999                         }
1000                 }
1001         }
1002
1003         /* Null terminate it now we're done */
1004         *outl = 0;
1005
1006
1007         /************ Fast, but confusing string tidying ************/
1008         outl = outlist;
1009         while (*outl && (*outl < 'A'))
1010                 outl++;
1011         /* outl now points to the first mode character after +'s and -'s */
1012         outl--;
1013         /* Now points at first mode-modifier + or - symbol */
1014         char* trim = outl;
1015         /* Now we tidy off any trailing -'s etc */
1016         while (*trim++);
1017         trim--;
1018         while ((*--trim == '+') || (*trim == '-'))
1019                 *trim = 0;
1020         /************ Done wih the string tidy functions ************/
1021
1022
1023         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1024         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1025         {
1026                 for (ptr = 0; ptr < pc; ptr++)
1027                 {
1028                         charlcat(outl,' ',MAXBUF);
1029                         strlcat(outl,outpars[ptr],MAXBUF-1);
1030                 }
1031                 if (local)
1032                 {
1033                         log(DEBUG,"Local mode change");
1034                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1035                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1036                 }
1037                 else
1038                 {
1039                         if (servermode)
1040                         {
1041                                 if (!silent)
1042                                 {
1043                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1044                                 }
1045
1046                         }
1047                         else
1048                         {
1049                                 if (!silent)
1050                                 {
1051                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1052                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1053                                 }
1054                         }
1055                 }
1056         }
1057 }
1058
1059 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1060
1061 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1062 {
1063         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1064         // Servers can +o and -o arbitrarily
1065         if ((serveroverride == true) && (umode == 'o'))
1066         {
1067                 return true;
1068         }
1069         // RFC1459 specified modes
1070         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1071         {
1072                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1073                 return true;
1074         }
1075
1076         // user may not +o themselves or others, but an oper may de-oper other opers or themselves
1077         if ((strchr(sourcemodes,'o')) && (!adding))
1078         {
1079                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1080                 return true;
1081         }
1082         else if (umode == 'o')
1083         {
1084                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1085                 return false;
1086         }
1087
1088         // process any module-defined modes that need oper
1089         if ((ModeDefinedOper(umode,MT_CLIENT)) && (strchr(sourcemodes,'o')))
1090         {
1091                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1092                 return true;
1093         }
1094         else
1095         if (ModeDefined(umode,MT_CLIENT))
1096         {
1097                 // process any module-defined modes that don't need oper
1098                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1099                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!strchr(sourcemodes,'o')))
1100                 {
1101                         // no, this mode needs oper, and this user 'aint got what it takes!
1102                         return false;
1103                 }
1104                 return true;
1105         }
1106
1107         // anything else - return false.
1108         log(DEBUG,"umode %c not known by any ruleset",umode);
1109         return false;
1110 }
1111
1112 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1113 {
1114         userrec* s2;
1115         bool faked = false;
1116         if (!source)
1117         {
1118                 s2 = new userrec;
1119                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1120                 *s2->modes = 'o';
1121                 *(s2->modes+1) = 0;
1122                 s2->fd = -1;
1123                 source = s2;
1124                 faked = true;
1125         }
1126         string_list p;
1127         p.clear();
1128         if (ModeDefined(umode,MT_CLIENT))
1129         {
1130                 for (int i = 0; i <= MODCOUNT; i++)
1131                 {
1132                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1133                         {
1134                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1135                                 return true;
1136                         }
1137                 }
1138                 log(DEBUG,"No module claims umode %c",umode);
1139                 if (faked)
1140                 {
1141                         delete s2;
1142                         source = NULL;
1143                 }
1144                 return false;
1145         }
1146         else
1147         {
1148                 if (faked)
1149                 {
1150                         delete s2;
1151                         source = NULL;
1152                 }
1153                 return false;
1154         }
1155 }
1156
1157 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1158 {
1159         chanrec* Ptr;
1160         userrec* dest;
1161         int can_change;
1162         int direction = 1;
1163         char outpars[MAXBUF];
1164         bool next_ok = true;
1165
1166         dest = Find(parameters[0]);
1167
1168         if (!user)
1169         {
1170                 return;
1171         }
1172
1173         if ((dest) && (pcnt == 1))
1174         {
1175                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1176                 return;
1177         }
1178
1179         if ((dest) && (pcnt > 1))
1180         {
1181                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1182                 parameters[1] = (char*)tidied.c_str();
1183
1184                 char dmodes[MAXBUF];
1185                 strlcpy(dmodes,dest->modes,MAXMODES);
1186                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1187
1188                 can_change = 0;
1189                 if (user != dest)
1190                 {
1191                         if ((strchr(user->modes,'o')) || (is_uline(user->server)))
1192                         {
1193                                 can_change = 1;
1194                         }
1195                 }
1196                 else
1197                 {
1198                         can_change = 1;
1199                 }
1200                 if (!can_change)
1201                 {
1202                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1203                         return;
1204                 }
1205
1206                 outpars[0] = *parameters[1];
1207                 outpars[1] = 0;
1208                 direction = (*parameters[1] == '+');
1209
1210                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1211                         return;
1212
1213                 for (char* i = parameters[1]; *i; i++)
1214                 {
1215                         if (*i == ' ')
1216                                 continue;
1217
1218                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1219                                 next_ok = true;
1220
1221                         if (*i == '+')
1222                         {
1223                                 if ((direction != 1) && (next_ok))
1224                                 {
1225                                         charlcat(outpars,'+',MAXBUF);
1226                                         next_ok = false;
1227                                 }
1228                                 direction = 1;
1229                         }
1230                         else
1231                         if (*i == '-')
1232                         {
1233                                 if ((direction != 0) && (next_ok))
1234                                 {
1235                                         charlcat(outpars,'-',MAXBUF);
1236                                         next_ok = false;
1237                                 }
1238                                 direction = 0;
1239                         }
1240                         else
1241                         {
1242                                 can_change = 0;
1243                                 if (strchr(user->modes,'o'))
1244                                 {
1245                                         can_change = 1;
1246                                 }
1247                                 else
1248                                 {
1249                                         if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1250                                         {
1251                                                 can_change = 1;
1252                                         }
1253                                 }
1254                                 if (can_change)
1255                                 {
1256                                         if (direction == 1)
1257                                         {
1258                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1259                                                 {
1260                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1261                                                         {
1262                                                                 charlcat(dmodes,*i,MAXMODES);
1263                                                                 charlcat(outpars,*i,MAXMODES);
1264                                                                 if (*i == 'o')
1265                                                                 {
1266                                                                         FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1267                                                                 }
1268                                                         }
1269                                                 }
1270                                         }
1271                                         else
1272                                         {
1273                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1274                                                 {
1275                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1276                                                         {
1277                                                                 charlcat(outpars,*i,MAXMODES);
1278                                                                 charremove(dmodes,*i);
1279                                                                 if (*i == 'o')
1280                                                                 {
1281                                                                         *dest->oper = 0;
1282                                                                         DeleteOper(dest);
1283                                                                 }
1284                                                         }
1285                                                 }
1286                                         }
1287                                 }
1288                         }
1289                 }
1290                 if (*outpars)
1291                 {
1292                         char b[MAXBUF];
1293                         char* z = b;
1294
1295                         for (char* i = outpars; *i;)
1296                         {
1297                                 *z++ = *i++;
1298                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1299                                 {
1300                                         // someones playing silly buggers and trying
1301                                         // to put a +- or -+ into the line...
1302                                         i++;
1303                                 }
1304                                 if (!*(i+1))
1305                                 {
1306                                         // Someone's trying to make the last character in
1307                                         // the line be a + or - symbol.
1308                                         if ((*i == '-') || (*i == '+'))
1309                                         {
1310                                                 i++;
1311                                         }
1312                                 }
1313                         }
1314                         *z = 0;
1315
1316                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1317                         {
1318                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1319                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1320                         }
1321
1322                         log(DEBUG,"Stripped mode line");
1323                         log(DEBUG,"Line dest is now %s",dmodes);
1324                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1325
1326                 }
1327
1328                 return;
1329         }
1330
1331         Ptr = FindChan(parameters[0]);
1332         if (Ptr)
1333         {
1334                 if (pcnt == 1)
1335                 {
1336                         /* just /modes #channel */
1337                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr,has_channel(user,Ptr)));
1338                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1339                         return;
1340                 }
1341                 else
1342                 if (pcnt == 2)
1343                 {
1344                         char* mode = parameters[1];
1345                         if (*mode == '+')
1346                                 mode++;
1347                         int MOD_RESULT = 0;
1348                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, Ptr, *mode, "", false, 0));
1349                         if (!MOD_RESULT)
1350                         {
1351                                 if (*mode == 'b')
1352                                 {
1353
1354                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1355                                         {
1356                                                 WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
1357                                         }
1358                                         WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
1359                                         return;
1360                                 }
1361                                 if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1362                                 {
1363                                         // list of items for an extmode
1364                                         log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1365                                         FOREACH_MOD(I_OnSendList,OnSendList(user,Ptr,*mode));
1366                                         return;
1367                                 }
1368                         }
1369                 }
1370
1371                 if (((Ptr) && (!has_channel(user,Ptr))) && (!is_uline(user->server)) && (IS_LOCAL(user)))
1372                 {
1373                         WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, Ptr->name);
1374                         return;
1375                 }
1376
1377                 if (Ptr)
1378                 {
1379                         int MOD_RESULT = 0;
1380                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,Ptr,AC_GENERAL_MODE));
1381
1382                         if (MOD_RESULT == ACR_DENY)
1383                                 return;
1384                         if (MOD_RESULT == ACR_DEFAULT)
1385                         {
1386                                 if ((cstatus(user,Ptr) < STATUS_HOP) && (IS_LOCAL(user)))
1387                                 {
1388                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name);
1389                                         return;
1390                                 }
1391                         }
1392
1393                         ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false,false);
1394                 }
1395         }
1396         else
1397         {
1398                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1399         }
1400 }
1401
1402
1403
1404
1405 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1406 {
1407         chanrec* Ptr;
1408         userrec* dest;
1409         int can_change;
1410         int direction = 1;
1411         char outpars[MAXBUF];
1412         bool next_ok = true;
1413
1414         dest = Find(parameters[0]);
1415
1416         // fix: ChroNiCk found this - we cant use this as debug if its null!
1417         if (dest)
1418         {
1419                 log(DEBUG,"server_mode on %s",dest->nick);
1420         }
1421
1422         if ((dest) && (pcnt > 1))
1423         {
1424                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1425                 parameters[1] = (char*)tidied.c_str();
1426
1427                 char dmodes[MAXBUF];
1428                 strlcpy(dmodes,dest->modes,MAXBUF);
1429
1430                 outpars[0] = *parameters[1];
1431                 outpars[1] = 0;
1432                 direction = (*parameters[1] == '+');
1433
1434                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1435                         return;
1436
1437                 for (char* i = parameters[1]; *i; i++)
1438                 {
1439                         if (*i == ' ')
1440                                 continue;
1441
1442                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1443                                 next_ok = true;
1444
1445                         if (*i == '+')
1446                         {
1447                                 if ((direction != 1) && (next_ok))
1448                                 {
1449                                         next_ok = false;
1450                                         charlcat(outpars,'+',MAXBUF);
1451                                 }
1452                                 direction = 1;
1453                         }
1454                         else
1455                         if (*i == '-')
1456                         {
1457                                 if ((direction != 0) && (next_ok))
1458                                 {
1459                                         next_ok = false;
1460                                         charlcat(outpars,'-',MAXBUF);
1461                                 }
1462                                 direction = 0;
1463                         }
1464                         else
1465                         {
1466                                 log(DEBUG,"begin mode processing entry");
1467                                 can_change = 1;
1468                                 if (can_change)
1469                                 {
1470                                         if (direction == 1)
1471                                         {
1472                                                 log(DEBUG,"umode %c being added",*i);
1473                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1474                                                 {
1475                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1476                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1477                                                         {
1478                                                                 charlcat(dmodes,*i,MAXMODES);
1479                                                                 charlcat(outpars,*i,MAXMODES);
1480                                                         }
1481                                                 }
1482                                         }
1483                                         else
1484                                         {
1485                                                 // can only remove a mode they already have
1486                                                 log(DEBUG,"umode %c being removed",*i);
1487                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1488                                                 {
1489                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1490                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1491                                                         {
1492                                                                 charlcat(outpars,*i,MAXMODES);
1493                                                                 charremove(dmodes,*i);
1494                                                         }
1495                                                 }
1496                                         }
1497                                 }
1498                         }
1499                 }
1500                 if (*outpars)
1501                 {
1502                         char b[MAXBUF];
1503                         char* z = b;
1504
1505                         for (char* i = outpars; *i;)
1506                         {
1507                                 *z++ = *i++;
1508                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1509                                 {
1510                                         // someones playing silly buggers and trying
1511                                         // to put a +- or -+ into the line...
1512                                         i++;
1513                                 }
1514                                 if (!*(i+1))
1515                                 {
1516                                         // Someone's trying to make the last character in
1517                                         // the line be a + or - symbol.
1518                                         if ((*i == '-') || (*i == '+'))
1519                                         {
1520                                                 i++;
1521                                         }
1522                                 }
1523                         }
1524                         *z = 0;
1525
1526                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1527                         {
1528                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1529                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1530                         }
1531
1532                         log(DEBUG,"Stripped mode line");
1533                         log(DEBUG,"Line dest is now %s",dmodes);
1534                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1535
1536                 }
1537
1538                 return;
1539         }
1540
1541         Ptr = FindChan(parameters[0]);
1542         if (Ptr)
1543         {
1544                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1545         }
1546         else
1547         {
1548                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1549         }
1550 }