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         char* modechar;
 500
 501         for (modechar = (modelist + 1); *modechar; ptr++, modechar++)
 502         {
 503                 r = NULL;
 504
 505                 /* If we have more than MAXMODES changes in one line,
 506                  * drop all after the MAXMODES
 507                  */
 508                 if (pc > MAXMODES-1)
 509                         break;
 510
 511
 512
 513                 switch (*modechar)
 514                 {
 515                         case '-':
 516                                 *outl++ = '-';
 517                                 mdir = 0;
 518                         break;
 519
 520                         case '+':
 521                                 *outl++ = '+';
 522                                 mdir = 1;
 523                         break;
 524
 525                         case 'o':
 526                                 log(DEBUG,"Ops");
 527                                 if ((param >= pcnt)) break;
 528                                 log(DEBUG,"Enough parameters left");
 529                                 r = NULL;
 530                                 if (mdir == 1)
 531                                 {
 532                                         MOD_RESULT = 0;
 533                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1));
 534                                         if (!MOD_RESULT)
 535                                         {
 536                                                 log(DEBUG,"calling GiveOps");
 537                                                 r = GiveOps(user,parameters[param++],chan,status);
 538                                         }
 539                                         else param++;
 540                                 }
 541                                 else
 542                                 {
 543                                         MOD_RESULT = 0;
 544                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1));
 545                                         if (!MOD_RESULT)
 546                                         {
 547                                                 log(DEBUG,"calling TakeOps");
 548                                                 r = TakeOps(user,parameters[param++],chan,status);
 549                                         }
 550                                         else param++;
 551                                 }
 552                                 if (r)
 553                                 {
 554                                         *outl++ = 'o';
 555                                         outpars[pc++] = r;
 556                                 }
 557                         break;
 558
 559                         case 'h':
 560                                 if (((param >= pcnt)) || (!Config->AllowHalfop)) break;
 561                                 r = NULL;
 562                                 if (mdir == 1)
 563                                 {
 564                                         MOD_RESULT = 0;
 565                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1));
 566                                         if (!MOD_RESULT)
 567                                         {
 568                                                 r = GiveHops(user,parameters[param++],chan,status);
 569                                         }
 570                                         else param++;
 571                                 }
 572                                 else
 573                                 {
 574                                         MOD_RESULT = 0;
 575                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1));
 576                                         if (!MOD_RESULT)
 577                                         {
 578                                                 r = TakeHops(user,parameters[param++],chan,status);
 579                                         }
 580                                         else param++;
 581                                 }
 582                                 if (r)
 583                                 {
 584                                         *outl++ = 'h';
 585                                         outpars[pc++] = r;
 586                                 }
 587                         break;
 588
 589
 590                         case 'v':
 591                                         if ((param >= pcnt)) break;
 592                                         r = NULL;
 593                                         if (mdir == 1)
 594                                         {
 595                                                 MOD_RESULT = 0;
 596                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1));
 597                                                 if (!MOD_RESULT)
 598                                                 {
 599                                                         r = GiveVoice(user,parameters[param++],chan,status);
 600                                                 }
 601                                                 else param++;
 602                                         }
 603                                         else
 604                                         {
 605                                                 MOD_RESULT = 0;
 606                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1));
 607                                                 if (!MOD_RESULT)
 608                                                 {
 609                                                         r = TakeVoice(user,parameters[param++],chan,status);
 610                                                 }
 611                                                 else param++;
 612                                         }
 613                                         if (r)
 614                                         {
 615                                                 *outl++ = 'v';
 616                                                 outpars[pc++] = r;
 617                                         }
 618                         break;
 619
 620                         case 'b':
 621                                 if ((param >= pcnt)) break;
 622                                 r = NULL;
 623                                 if (mdir == 1)
 624                                 {
 625                                         MOD_RESULT = 0;
 626                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1));
 627                                         if (!MOD_RESULT)
 628                                         {
 629                                                 r = AddBan(user,parameters[param++],chan,status);
 630                                         }
 631                                         else param++;
 632                                 }
 633                                 else
 634                                 {
 635                                         MOD_RESULT = 0;
 636                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1));
 637                                         if (!MOD_RESULT)
 638                                         {
 639                                                 r = TakeBan(user,parameters[param++],chan,status);
 640                                         }
 641                                         else param++;
 642                                 }
 643                                 if (r)
 644                                 {
 645                                         *outl++ = 'b';
 646                                         outpars[pc++] = parameters[param-1];
 647                                 }
 648                         break;
 649
 650
 651                         case 'k':
 652                                 if ((param >= pcnt))
 653                                         break;
 654
 655                                 if (mdir == 1)
 656                                 {
 657                                         if (k_set)
 658                                                 break;
 659
 660                                         if (previously_unset_k)
 661                                                 break;
 662                                         previously_set_k = true;
 663
 664                                         if (!*chan->key)
 665                                         {
 666                                                 MOD_RESULT = 0;
 667                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1));
 668                                                 if (!MOD_RESULT)
 669                                                 {
 670                                                         *outl++ = 'k';
 671                                                         char key[MAXBUF];
 672                                                         strlcpy(key,parameters[param++],32);
 673                                                         outpars[pc++] = key;
 674                                                         strlcpy(chan->key,key,MAXBUF);
 675                                                         k_set = true;
 676                                                 }
 677                                                 else param++;
 678                                         }
 679                                 }
 680                                 else
 681                                 {
 682                                         /* checks on -k are case sensitive and only accurate to the
 683                                                    first 32 characters */
 684                                         if (previously_set_k)
 685                                                 break;
 686                                         previously_unset_k = true;
 687
 688                                         char key[MAXBUF];
 689                                         MOD_RESULT = 0;
 690                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 691                                         if (!MOD_RESULT)
 692                                         {
 693                                                 strlcpy(key,parameters[param++],32);
 694                                                 /* only allow -k if correct key given */
 695                                                 if (!strcmp(chan->key,key))
 696                                                 {
 697                                                         *outl++ = 'k';
 698                                                         *chan->key = 0;
 699                                                         outpars[pc++] = key;
 700                                                 }
 701                                         }
 702                                         else param++;
 703                                 }
 704                         break;
 705
 706                         case 'l':
 707                                 if (mdir == 0)
 708                                 {
 709                                         if (previously_set_l)
 710                                                 break;
 711                                         previously_unset_l = true;
 712                                         MOD_RESULT = 0;
 713                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 714                                         if (!MOD_RESULT)
 715                                         {
 716                                                 if (chan->limit)
 717                                                 {
 718                                                         *outl++ = 'l';
 719                                                         chan->limit = 0;
 720                                                 }
 721                                         }
 722                                 }
 723
 724                                 if ((param >= pcnt)) break;
 725                                 if (mdir == 1)
 726                                 {
 727                                         if (l_set)
 728                                                 break;
 729                                         if (previously_unset_l)
 730                                                 break;
 731                                         previously_set_l = true;
 732                                         bool invalid = false;
 733                                         for (char* f = parameters[param]; *f; f++)
 734                                         {
 735                                                 if ((*f < '0') || (*f > '9'))
 736                                                 {
 737                                                         invalid = true;
 738                                                 }
 739                                         }
 740                                         /* If the limit is < 1, or the new limit is the current limit, dont allow */
 741                                         if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 742                                         {
 743                                                 invalid = true;
 744                                         }
 745
 746                                         if (invalid)
 747                                                 break;
 748
 749                                         MOD_RESULT = 0;
 750                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 751                                         if (!MOD_RESULT)
 752                                         {
 753
 754                                                 chan->limit = atoi(parameters[param]);
 755
 756                                                 // reported by mech: large values cause underflow
 757                                                 if (chan->limit < 0)
 758                                                         chan->limit = 0x7FFF;
 759                                         }
 760
 761                                         if (chan->limit)
 762                                         {
 763                                                 *outl++ = 'l';
 764                                                 outpars[pc++] = parameters[param++];
 765                                                 l_set = true;
 766                                         }
 767                                 }
 768                         break;
 769
 770                         case 'i':
 771                                 MOD_RESULT = 0;
 772                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 773                                 if (!MOD_RESULT)
 774                                 {
 775                                         if (mdir)
 776                                         {
 777                                                 if (!(chan->binarymodes & CM_INVITEONLY)) *outl++ = 'i';
 778                                                 chan->binarymodes |= CM_INVITEONLY;
 779                                         }
 780                                         else
 781                                         {
 782                                                 if (chan->binarymodes & CM_INVITEONLY) *outl++ = 'i';
 783                                                 chan->binarymodes &= ~CM_INVITEONLY;
 784                                         }
 785                                 }
 786                         break;
 787
 788                         case 't':
 789                                 MOD_RESULT = 0;
 790                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 791                                 if (!MOD_RESULT)
 792                                 {
 793                                         if (mdir)
 794                                         {
 795                                                 if (!(chan->binarymodes & CM_TOPICLOCK)) *outl++ = 't';
 796                                                 chan->binarymodes |= CM_TOPICLOCK;
 797                                         }
 798                                         else
 799                                         {
 800                                                 if (chan->binarymodes & CM_TOPICLOCK) *outl++ = 't';
 801                                                 chan->binarymodes &= ~CM_TOPICLOCK;
 802                                         }
 803                                 }
 804                         break;
 805
 806                         case 'n':
 807                                 MOD_RESULT = 0;
 808                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 809                                 if (!MOD_RESULT)
 810                                 {
 811                                         if (mdir)
 812                                         {
 813                                                 if (!(chan->binarymodes & CM_NOEXTERNAL)) *outl++ = 'n';
 814                                                 chan->binarymodes |= CM_NOEXTERNAL;
 815                                         }
 816                                         else
 817                                         {
 818                                                 if (chan->binarymodes & CM_NOEXTERNAL) *outl++ = 'n';
 819                                                 chan->binarymodes &= ~CM_NOEXTERNAL;
 820                                         }
 821                                 }
 822                         break;
 823
 824                         case 'm':
 825                                 MOD_RESULT = 0;
 826                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 827                                 if (!MOD_RESULT)
 828                                 {
 829                                         if (mdir)
 830                                         {
 831                                                 if (!(chan->binarymodes & CM_MODERATED)) *outl++ = 'm';
 832                                                 chan->binarymodes |= CM_MODERATED;
 833                                         }
 834                                         else
 835                                         {
 836                                                 if (chan->binarymodes & CM_MODERATED) *outl++ = 'm';
 837                                                 chan->binarymodes &= ~CM_MODERATED;
 838                                         }
 839                                 }
 840                         break;
 841
 842                         case 's':
 843                                 MOD_RESULT = 0;
 844                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 845                                 if (!MOD_RESULT)
 846                                 {
 847                                         if (mdir)
 848                                         {
 849                                                 if (!(chan->binarymodes & CM_SECRET)) *outl++ = 's';
 850                                                 chan->binarymodes |= CM_SECRET;
 851                                                 if (chan->binarymodes & CM_PRIVATE)
 852                                                 {
 853                                                         chan->binarymodes &= ~CM_PRIVATE;
 854                                                         if (mdir)
 855                                                         {
 856                                                                 *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
 857                                                         }
 858                                                 }
 859                                         }
 860                                         else
 861                                         {
 862                                                 if (chan->binarymodes & CM_SECRET) *outl++ = 's';
 863                                                 chan->binarymodes &= ~CM_SECRET;
 864                                         }
 865                                 }
 866                         break;
 867
 868                         case 'p':
 869                                 MOD_RESULT = 0;
 870                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
 871                                 if (!MOD_RESULT)
 872                                 {
 873                                         if (mdir)
 874                                         {
 875                                                 if (!(chan->binarymodes & CM_PRIVATE)) *outl++ = 'p';
 876                                                 chan->binarymodes |= CM_PRIVATE;
 877                                                 if (chan->binarymodes & CM_SECRET)
 878                                                 {
 879                                                         chan->binarymodes &= ~CM_SECRET;
 880                                                         if (mdir)
 881                                                         {
 882                                                                 *outl++ = '-'; *outl++ = 's'; *outl++ = '+';
 883                                                         }
 884                                                 }
 885                                         }
 886                                         else
 887                                         {
 888                                                 if (chan->binarymodes & CM_PRIVATE) *outl++ = 'p';
 889                                                 chan->binarymodes &= ~CM_PRIVATE;
 890                                         }
 891                                 }
 892                         break;
 893
 894                         default:
 895                                 log(DEBUG,"Preprocessing custom mode %c: modelist: %s",*modechar,chan->custom_modes);
 896                                 string_list p;
 897                                 p.clear();
 898                                 if (((!strchr(chan->custom_modes,*modechar)) && (!mdir)) || ((strchr(chan->custom_modes,*modechar)) && (mdir)))
 899                                 {
 900                                         if (!ModeIsListMode(*modechar,MT_CHANNEL))
 901                                         {
 902                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
 903                                                 break;
 904                                         }
 905                                 }
 906                                 if (ModeDefined(*modechar,MT_CHANNEL))
 907                                 {
 908                                         log(DEBUG,"A module has claimed this mode");
 909                                         if (param<pcnt)
 910                                         {
 911                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 912                                                 {
 913                                                         p.push_back(parameters[param]);
 914                                                 }
 915                                                 if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
 916                                                 {
 917                                                         p.push_back(parameters[param]);
 918                                                 }
 919                                         }
 920                                         bool handled = false;
 921                                         if (param>=pcnt)
 922                                         {
 923                                                 // we're supposed to have a parameter, but none was given... so dont handle the mode.
 924                                                 if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
 925                                                 {
 926                                                         log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
 927                                                         handled = true;
 928                                                         param++;
 929                                                 }
 930                                         }
 931                                         // BIG ASS IDIOTIC CODER WARNING!
 932                                         // Using OnRawMode on another modules mode's behavour
 933                                         // will confuse the crap out of admins! just because you CAN
 934                                         // do it, doesnt mean you SHOULD!
 935                                         MOD_RESULT = 0;
 936                                         std::string para = "";
 937                                         if (p.size())
 938                                                 para = p[0];
 939                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
 940                                         if (!MOD_RESULT)
 941                                         {
 942                                                         for (int i = 0; i <= MODCOUNT; i++)
 943                                                 {
 944                                                         if (!handled)
 945                                                         {
 946                                                                 int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
 947                                                                 if (t != 0)
 948                                                                 {
 949                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
 950                                                                         if (ModeIsListMode(*modechar,MT_CHANNEL))
 951                                                                         {
 952                                                                                 if (t == -1)
 953                                                                                 {
 954                                                                                         //pc++;
 955                                                                                         param++;
 956                                                                                 }
 957                                                                                 else
 958                                                                                 {
 959                                                                                         if (param < pcnt)
 960                                                                                         {
 961                                                                                                 *outl++ = *modechar;
 962                                                                                         }
 963                                                                                         outpars[pc++] = parameters[param++];
 964                                                                                 }
 965                                                                         }
 966                                                                         else
 967                                                                         {
 968                                                                                 if (param < pcnt)
 969                                                                                 {
 970                                                                                         *outl++ = *modechar;
 971                                                                                         chan->SetCustomMode(*modechar,mdir);
 972                                                                                         // include parameters in output if mode has them
 973                                                                                         if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 974                                                                                         {
 975                                                                                                 chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir);
 976                                                                                                 outpars[pc++] = parameters[param++];
 977                                                                                         }
 978                                                                                 }
 979                                                                         }
 980                                                                         // break, because only one module can handle the mode.
 981                                                                         handled = true;
 982                                                                 }
 983                                                         }
 984                                                 }
 985                                         }
 986                                 }
 987                                 else
 988                                 {
 989                                         WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
 990                                 }
 991                         break;
 992                 }
 993         }
 994
 995         /* Null terminate it now we're done */
 996         *outl = 0;
 997
 998
 999         /************ Fast, but confusing string tidying ************/
1000         outl = outlist;
1001         while (*outl && (*outl < 'A'))
1002                 outl++;
1003         /* outl now points to the first mode character after +'s and -'s */
1004         outl--;
1005         /* Now points at first mode-modifier + or - symbol */
1006         char* trim = outl;
1007         /* Now we tidy off any trailing -'s etc */
1008         while (*trim++);
1009         trim--;
1010         while ((*--trim == '+') || (*trim == '-'))
1011                 *trim = 0;
1012         /************ Done wih the string tidy functions ************/
1013
1014
1015         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1016         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1017         {
1018                 for (ptr = 0; ptr < pc; ptr++)
1019                 {
1020                         charlcat(outl,' ',MAXBUF);
1021                         strlcat(outl,outpars[ptr],MAXBUF-1);
1022                 }
1023                 if (local)
1024                 {
1025                         log(DEBUG,"Local mode change");
1026                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1027                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1028                 }
1029                 else
1030                 {
1031                         if (servermode)
1032                         {
1033                                 if (!silent)
1034                                 {
1035                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1036                                 }
1037
1038                         }
1039                         else
1040                         {
1041                                 if (!silent)
1042                                 {
1043                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1044                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1045                                 }
1046                         }
1047                 }
1048         }
1049 }
1050
1051 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1052
1053 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1054 {
1055         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1056         // Servers can +o and -o arbitrarily
1057         if ((serveroverride == true) && (umode == 'o'))
1058         {
1059                 return true;
1060         }
1061         // RFC1459 specified modes
1062         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1063         {
1064                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1065                 return true;
1066         }
1067
1068         // user may not +o themselves or others, but an oper may de-oper other opers or themselves
1069         if ((strchr(sourcemodes,'o')) && (!adding))
1070         {
1071                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1072                 return true;
1073         }
1074         else if (umode == 'o')
1075         {
1076                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1077                 return false;
1078         }
1079
1080         // process any module-defined modes that need oper
1081         if ((ModeDefinedOper(umode,MT_CLIENT)) && (strchr(sourcemodes,'o')))
1082         {
1083                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1084                 return true;
1085         }
1086         else
1087         if (ModeDefined(umode,MT_CLIENT))
1088         {
1089                 // process any module-defined modes that don't need oper
1090                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1091                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!strchr(sourcemodes,'o')))
1092                 {
1093                         // no, this mode needs oper, and this user 'aint got what it takes!
1094                         return false;
1095                 }
1096                 return true;
1097         }
1098
1099         // anything else - return false.
1100         log(DEBUG,"umode %c not known by any ruleset",umode);
1101         return false;
1102 }
1103
1104 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1105 {
1106         userrec* s2;
1107         bool faked = false;
1108         if (!source)
1109         {
1110                 s2 = new userrec;
1111                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1112                 *s2->modes = 'o';
1113                 *(s2->modes+1) = 0;
1114                 s2->fd = -1;
1115                 source = s2;
1116                 faked = true;
1117         }
1118         string_list p;
1119         p.clear();
1120         if (ModeDefined(umode,MT_CLIENT))
1121         {
1122                 for (int i = 0; i <= MODCOUNT; i++)
1123                 {
1124                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1125                         {
1126                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1127                                 return true;
1128                         }
1129                 }
1130                 log(DEBUG,"No module claims umode %c",umode);
1131                 if (faked)
1132                 {
1133                         delete s2;
1134                         source = NULL;
1135                 }
1136                 return false;
1137         }
1138         else
1139         {
1140                 if (faked)
1141                 {
1142                         delete s2;
1143                         source = NULL;
1144                 }
1145                 return false;
1146         }
1147 }
1148
1149 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1150 {
1151         chanrec* Ptr;
1152         userrec* dest;
1153         int can_change;
1154         int direction = 1;
1155         char outpars[MAXBUF];
1156         bool next_ok = true;
1157
1158         dest = Find(parameters[0]);
1159
1160         if (!user)
1161         {
1162                 return;
1163         }
1164
1165         if ((dest) && (pcnt == 1))
1166         {
1167                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1168                 return;
1169         }
1170
1171         if ((dest) && (pcnt > 1))
1172         {
1173                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1174                 parameters[1] = (char*)tidied.c_str();
1175
1176                 char dmodes[MAXBUF];
1177                 strlcpy(dmodes,dest->modes,MAXMODES);
1178                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1179
1180                 can_change = 0;
1181                 if (user != dest)
1182                 {
1183                         if ((strchr(user->modes,'o')) || (is_uline(user->server)))
1184                         {
1185                                 can_change = 1;
1186                         }
1187                 }
1188                 else
1189                 {
1190                         can_change = 1;
1191                 }
1192                 if (!can_change)
1193                 {
1194                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1195                         return;
1196                 }
1197
1198                 outpars[0] = *parameters[1];
1199                 outpars[1] = 0;
1200                 direction = (*parameters[1] == '+');
1201
1202                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1203                         return;
1204
1205                 for (char* i = parameters[1]; *i; i++)
1206                 {
1207                         if (*i == ' ')
1208                                 continue;
1209
1210                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1211                                 next_ok = true;
1212
1213                         if (*i == '+')
1214                         {
1215                                 if ((direction != 1) && (next_ok))
1216                                 {
1217                                         charlcat(outpars,'+',MAXBUF);
1218                                         next_ok = false;
1219                                 }
1220                                 direction = 1;
1221                         }
1222                         else
1223                         if (*i == '-')
1224                         {
1225                                 if ((direction != 0) && (next_ok))
1226                                 {
1227                                         charlcat(outpars,'-',MAXBUF);
1228                                         next_ok = false;
1229                                 }
1230                                 direction = 0;
1231                         }
1232                         else
1233                         {
1234                                 can_change = 0;
1235                                 if (strchr(user->modes,'o'))
1236                                 {
1237                                         can_change = 1;
1238                                 }
1239                                 else
1240                                 {
1241                                         if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1242                                         {
1243                                                 can_change = 1;
1244                                         }
1245                                 }
1246                                 if (can_change)
1247                                 {
1248                                         if (direction == 1)
1249                                         {
1250                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1251                                                 {
1252                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1253                                                         {
1254                                                                 charlcat(dmodes,*i,MAXMODES);
1255                                                                 charlcat(outpars,*i,MAXMODES);
1256                                                                 if (*i == 'o')
1257                                                                 {
1258                                                                         FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1259                                                                 }
1260                                                         }
1261                                                 }
1262                                         }
1263                                         else
1264                                         {
1265                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1266                                                 {
1267                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1268                                                         {
1269                                                                 charlcat(outpars,*i,MAXMODES);
1270                                                                 charremove(dmodes,*i);
1271                                                                 if (*i == 'o')
1272                                                                 {
1273                                                                         *dest->oper = 0;
1274                                                                         DeleteOper(dest);
1275                                                                 }
1276                                                         }
1277                                                 }
1278                                         }
1279                                 }
1280                         }
1281                 }
1282                 if (*outpars)
1283                 {
1284                         char b[MAXBUF];
1285                         char* z = b;
1286
1287                         for (char* i = outpars; *i;)
1288                         {
1289                                 *z++ = *i++;
1290                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1291                                 {
1292                                         // someones playing silly buggers and trying
1293                                         // to put a +- or -+ into the line...
1294                                         i++;
1295                                 }
1296                                 if (!*(i+1))
1297                                 {
1298                                         // Someone's trying to make the last character in
1299                                         // the line be a + or - symbol.
1300                                         if ((*i == '-') || (*i == '+'))
1301                                         {
1302                                                 i++;
1303                                         }
1304                                 }
1305                         }
1306                         *z = 0;
1307
1308                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1309                         {
1310                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1311                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1312                         }
1313
1314                         log(DEBUG,"Stripped mode line");
1315                         log(DEBUG,"Line dest is now %s",dmodes);
1316                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1317
1318                 }
1319
1320                 return;
1321         }
1322
1323         Ptr = FindChan(parameters[0]);
1324         if (Ptr)
1325         {
1326                 if (pcnt == 1)
1327                 {
1328                         /* just /modes #channel */
1329                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr,has_channel(user,Ptr)));
1330                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1331                         return;
1332                 }
1333                 else
1334                 if (pcnt == 2)
1335                 {
1336                         char* mode = parameters[1];
1337                         if (*mode == '+')
1338                                 mode++;
1339                         int MOD_RESULT = 0;
1340                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, Ptr, *mode, "", false, 0));
1341                         if (!MOD_RESULT)
1342                         {
1343                                 if (*mode == 'b')
1344                                 {
1345
1346                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1347                                         {
1348                                                 WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
1349                                         }
1350                                         WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
1351                                         return;
1352                                 }
1353                                 if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1354                                 {
1355                                         // list of items for an extmode
1356                                         log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1357                                         FOREACH_MOD(I_OnSendList,OnSendList(user,Ptr,*mode));
1358                                         return;
1359                                 }
1360                         }
1361                 }
1362
1363                 if (((Ptr) && (!has_channel(user,Ptr))) && (!is_uline(user->server)) && (IS_LOCAL(user)))
1364                 {
1365                         WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, Ptr->name);
1366                         return;
1367                 }
1368
1369                 if (Ptr)
1370                 {
1371                         int MOD_RESULT = 0;
1372                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,Ptr,AC_GENERAL_MODE));
1373
1374                         if (MOD_RESULT == ACR_DENY)
1375                                 return;
1376                         if (MOD_RESULT == ACR_DEFAULT)
1377                         {
1378                                 if ((cstatus(user,Ptr) < STATUS_HOP) && (IS_LOCAL(user)))
1379                                 {
1380                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name);
1381                                         return;
1382                                 }
1383                         }
1384
1385                         ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false,false);
1386                 }
1387         }
1388         else
1389         {
1390                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1391         }
1392 }
1393
1394
1395
1396
1397 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1398 {
1399         chanrec* Ptr;
1400         userrec* dest;
1401         int can_change;
1402         int direction = 1;
1403         char outpars[MAXBUF];
1404         bool next_ok = true;
1405
1406         dest = Find(parameters[0]);
1407
1408         // fix: ChroNiCk found this - we cant use this as debug if its null!
1409         if (dest)
1410         {
1411                 log(DEBUG,"server_mode on %s",dest->nick);
1412         }
1413
1414         if ((dest) && (pcnt > 1))
1415         {
1416                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1417                 parameters[1] = (char*)tidied.c_str();
1418
1419                 char dmodes[MAXBUF];
1420                 strlcpy(dmodes,dest->modes,MAXBUF);
1421
1422                 outpars[0] = *parameters[1];
1423                 outpars[1] = 0;
1424                 direction = (*parameters[1] == '+');
1425
1426                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1427                         return;
1428
1429                 for (char* i = parameters[1]; *i; i++)
1430                 {
1431                         if (*i == ' ')
1432                                 continue;
1433
1434                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1435                                 next_ok = true;
1436
1437                         if (*i == '+')
1438                         {
1439                                 if ((direction != 1) && (next_ok))
1440                                 {
1441                                         next_ok = false;
1442                                         charlcat(outpars,'+',MAXBUF);
1443                                 }
1444                                 direction = 1;
1445                         }
1446                         else
1447                         if (*i == '-')
1448                         {
1449                                 if ((direction != 0) && (next_ok))
1450                                 {
1451                                         next_ok = false;
1452                                         charlcat(outpars,'-',MAXBUF);
1453                                 }
1454                                 direction = 0;
1455                         }
1456                         else
1457                         {
1458                                 log(DEBUG,"begin mode processing entry");
1459                                 can_change = 1;
1460                                 if (can_change)
1461                                 {
1462                                         if (direction == 1)
1463                                         {
1464                                                 log(DEBUG,"umode %c being added",*i);
1465                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1466                                                 {
1467                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1468                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1469                                                         {
1470                                                                 charlcat(dmodes,*i,MAXMODES);
1471                                                                 charlcat(outpars,*i,MAXMODES);
1472                                                         }
1473                                                 }
1474                                         }
1475                                         else
1476                                         {
1477                                                 // can only remove a mode they already have
1478                                                 log(DEBUG,"umode %c being removed",*i);
1479                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1480                                                 {
1481                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1482                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1483                                                         {
1484                                                                 charlcat(outpars,*i,MAXMODES);
1485                                                                 charremove(dmodes,*i);
1486                                                         }
1487                                                 }
1488                                         }
1489                                 }
1490                         }
1491                 }
1492                 if (*outpars)
1493                 {
1494                         char b[MAXBUF];
1495                         char* z = b;
1496
1497                         for (char* i = outpars; *i;)
1498                         {
1499                                 *z++ = *i++;
1500                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1501                                 {
1502                                         // someones playing silly buggers and trying
1503                                         // to put a +- or -+ into the line...
1504                                         i++;
1505                                 }
1506                                 if (!*(i+1))
1507                                 {
1508                                         // Someone's trying to make the last character in
1509                                         // the line be a + or - symbol.
1510                                         if ((*i == '-') || (*i == '+'))
1511                                         {
1512                                                 i++;
1513                                         }
1514                                 }
1515                         }
1516                         *z = 0;
1517
1518                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1519                         {
1520                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1521                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1522                         }
1523
1524                         log(DEBUG,"Stripped mode line");
1525                         log(DEBUG,"Line dest is now %s",dmodes);
1526                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1527
1528                 }
1529
1530                 return;
1531         }
1532
1533         Ptr = FindChan(parameters[0]);
1534         if (Ptr)
1535         {
1536                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1537         }
1538         else
1539         {
1540                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1541         }
1542 }