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) || (pcnt < 2)) {
 453                 return;
 454         }
 455
 456         char outlist[MAXBUF];
 457         char *outpars[32];
 458         int param = 2;
 459         int pc = 0;
 460         int ptr = 0;
 461         int mdir = 1;
 462         char* r = NULL;
 463         bool k_set = false, l_set = false, previously_set_l = false, previously_unset_l = false, previously_set_k = false, previously_unset_k = false;
 464
 465         int MOD_RESULT = 0;
 466
 467         if (IS_LOCAL(user))
 468         {
 469                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,chan,AC_GENERAL_MODE));
 470                 if (MOD_RESULT == ACR_DENY)
 471                         return;
 472         }
 473
 474         char* modelist = parameters[1];         /* mode list, e.g. +oo-o *
 475                                                  * parameters[2] onwards are parameters for
 476                                                  * modes that require them :) */
 477         *outlist = *modelist;
 478         char* outl = outlist+1;
 479
 480         mdir = (*modelist == '+');
 481
 482         log(DEBUG,"process_modes: modelist: %s",modelist);
 483
 484         std::string tidied = this->CompressModes(modelist,true);
 485         strlcpy(modelist,tidied.c_str(),MAXBUF);
 486
 487         int len = tidied.length();
 488         while (modelist[len-1] == ' ')
 489                 modelist[--len] = '\0';
 490
 491         for (char* modechar = (modelist + 1); *modechar; ptr++, modechar++)
 492         {
 493                 r = NULL;
 494
 495                 /* If we have more than MAXMODES changes in one line,
 496                  * drop all after the MAXMODES
 497                  */
 498                 if (pc > MAXMODES-1)
 499                         break;
 500
 501
 502
 503                 switch (*modechar)
 504                 {
 505                         case '-':
 506                                 *outl++ = '-';
 507                                 mdir = 0;
 508                         break;
 509
 510                         case '+':
 511                                 *outl++ = '+';
 512                                 mdir = 1;
 513                         break;
 514
 515                         case 'o':
 516                                 log(DEBUG,"Ops");
 517                                 if ((param >= pcnt)) break;
 518                                 log(DEBUG,"Enough parameters left");
 519                                 r = NULL;
 520                                 if (mdir == 1)
 521                                 {
 522                                         MOD_RESULT = 0;
 523                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1));
 524                                         if (!MOD_RESULT)
 525                                         {
 526                                                 log(DEBUG,"calling GiveOps");
 527                                                 r = GiveOps(user,parameters[param++],chan,status);
 528                                         }
 529                                         else param++;
 530                                 }
 531                                 else
 532                                 {
 533                                         MOD_RESULT = 0;
 534                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1));
 535                                         if (!MOD_RESULT)
 536                                         {
 537                                                 log(DEBUG,"calling TakeOps");
 538                                                 r = TakeOps(user,parameters[param++],chan,status);
 539                                         }
 540                                         else param++;
 541                                 }
 542                                 if (r)
 543                                 {
 544                                         *outl++ = 'o';
 545                                         outpars[pc++] = r;
 546                                 }
 547                         break;
 548
 549                         case 'h':
 550                                 if (((param >= pcnt)) || (!Config->AllowHalfop)) break;
 551                                 r = NULL;
 552                                 if (mdir == 1)
 553                                 {
 554                                         MOD_RESULT = 0;
 555                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1));
 556                                         if (!MOD_RESULT)
 557                                         {
 558                                                 r = GiveHops(user,parameters[param++],chan,status);
 559                                         }
 560                                         else param++;
 561                                 }
 562                                 else
 563                                 {
 564                                         MOD_RESULT = 0;
 565                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1));
 566                                         if (!MOD_RESULT)
 567                                         {
 568                                                 r = TakeHops(user,parameters[param++],chan,status);
 569                                         }
 570                                         else param++;
 571                                 }
 572                                 if (r)
 573                                 {
 574                                         *outl++ = 'h';
 575                                         outpars[pc++] = r;
 576                                 }
 577                         break;
 578
 579
 580                         case 'v':
 581                                         if ((param >= pcnt)) break;
 582                                         r = NULL;
 583                                         if (mdir == 1)
 584                                         {
 585                                                 MOD_RESULT = 0;
 586                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1));
 587                                                 if (!MOD_RESULT)
 588                                                 {
 589                                                         r = GiveVoice(user,parameters[param++],chan,status);
 590                                                 }
 591                                                 else param++;
 592                                         }
 593                                         else
 594                                         {
 595                                                 MOD_RESULT = 0;
 596                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1));
 597                                                 if (!MOD_RESULT)
 598                                                 {
 599                                                         r = TakeVoice(user,parameters[param++],chan,status);
 600                                                 }
 601                                                 else param++;
 602                                         }
 603                                         if (r)
 604                                         {
 605                                                 *outl++ = 'v';
 606                                                 outpars[pc++] = r;
 607                                         }
 608                         break;
 609
 610                         case 'b':
 611                                 if ((param >= pcnt)) break;
 612                                 r = NULL;
 613                                 if (mdir == 1)
 614                                 {
 615                                         MOD_RESULT = 0;
 616                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1));
 617                                         if (!MOD_RESULT)
 618                                         {
 619                                                 r = AddBan(user,parameters[param++],chan,status);
 620                                         }
 621                                         else param++;
 622                                 }
 623                                 else
 624                                 {
 625                                         MOD_RESULT = 0;
 626                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1));
 627                                         if (!MOD_RESULT)
 628                                         {
 629                                                 r = TakeBan(user,parameters[param++],chan,status);
 630                                         }
 631                                         else param++;
 632                                 }
 633                                 if (r)
 634                                 {
 635                                         *outl++ = 'b';
 636                                         outpars[pc++] = parameters[param-1];
 637                                 }
 638                         break;
 639
 640
 641                         case 'k':
 642                                 if ((param >= pcnt))
 643                                         break;
 644
 645                                 if (mdir == 1)
 646                                 {
 647                                         if (k_set)
 648                                                 break;
 649
 650                                         if (previously_unset_k)
 651                                                 break;
 652                                         previously_set_k = true;
 653
 654                                         if (!*chan->key)
 655                                         {
 656                                                 MOD_RESULT = 0;
 657                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1));
 658                                                 if (!MOD_RESULT)
 659                                                 {
 660                                                         *outl++ = 'k';
 661                                                         char key[MAXBUF];
 662                                                         strlcpy(key,parameters[param++],32);
 663                                                         outpars[pc++] = key;
 664                                                         strlcpy(chan->key,key,MAXBUF);
 665                                                         k_set = true;
 666                                                 }
 667                                                 else param++;
 668                                         }
 669                                 }
 670                                 else
 671                                 {
 672                                         /* checks on -k are case sensitive and only accurate to the
 673                                                    first 32 characters */
 674                                         if (previously_set_k)
 675                                                 break;
 676                                         previously_unset_k = true;
 677
 678                                         char key[MAXBUF];
 679                                         MOD_RESULT = 0;
 680                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 681                                         if (!MOD_RESULT)
 682                                         {
 683                                                 strlcpy(key,parameters[param++],32);
 684                                                 /* only allow -k if correct key given */
 685                                                 if (!strcmp(chan->key,key))
 686                                                 {
 687                                                         *outl++ = 'k';
 688                                                         *chan->key = 0;
 689                                                         outpars[pc++] = key;
 690                                                 }
 691                                         }
 692                                         else param++;
 693                                 }
 694                         break;
 695
 696                         case 'l':
 697                                 if (mdir == 0)
 698                                 {
 699                                         if (previously_set_l)
 700                                                 break;
 701                                         previously_unset_l = true;
 702                                         MOD_RESULT = 0;
 703                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 704                                         if (!MOD_RESULT)
 705                                         {
 706                                                 if (chan->limit)
 707                                                 {
 708                                                         *outl++ = 'l';
 709                                                         chan->limit = 0;
 710                                                 }
 711                                         }
 712                                 }
 713
 714                                 if ((param >= pcnt)) break;
 715                                 if (mdir == 1)
 716                                 {
 717                                         if (l_set)
 718                                                 break;
 719                                         if (previously_unset_l)
 720                                                 break;
 721                                         previously_set_l = true;
 722                                         bool invalid = false;
 723                                         for (char* f = parameters[param]; *f; f++)
 724                                         {
 725                                                 if ((*f < '0') || (*f > '9'))
 726                                                 {
 727                                                         invalid = true;
 728                                                 }
 729                                         }
 730                                         /* If the limit is < 1, or the new limit is the current limit, dont allow */
 731                                         if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 732                                         {
 733                                                 invalid = true;
 734                                         }
 735
 736                                         if (invalid)
 737                                                 break;
 738
 739                                         MOD_RESULT = 0;
 740                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 741                                         if (!MOD_RESULT)
 742                                         {
 743
 744                                                 chan->limit = atoi(parameters[param]);
 745
 746                                                 // reported by mech: large values cause underflow
 747                                                 if (chan->limit < 0)
 748                                                         chan->limit = 0x7FFF;
 749                                         }
 750
 751                                         if (chan->limit)
 752                                         {
 753                                                 *outl++ = 'l';
 754                                                 outpars[pc++] = parameters[param++];
 755                                                 l_set = true;
 756                                         }
 757                                 }
 758                         break;
 759
 760                         case 'i':
 761                                 MOD_RESULT = 0;
 762                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 763                                 if (!MOD_RESULT)
 764                                 {
 765                                         if (mdir)
 766                                         {
 767                                                 if (!(chan->binarymodes & CM_INVITEONLY)) *outl++ = 'i';
 768                                                 chan->binarymodes |= CM_INVITEONLY;
 769                                         }
 770                                         else
 771                                         {
 772                                                 if (chan->binarymodes & CM_INVITEONLY) *outl++ = 'i';
 773                                                 chan->binarymodes &= ~CM_INVITEONLY;
 774                                         }
 775                                 }
 776                         break;
 777
 778                         case 't':
 779                                 MOD_RESULT = 0;
 780                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 781                                 if (!MOD_RESULT)
 782                                 {
 783                                         if (mdir)
 784                                         {
 785                                                 if (!(chan->binarymodes & CM_TOPICLOCK)) *outl++ = 't';
 786                                                 chan->binarymodes |= CM_TOPICLOCK;
 787                                         }
 788                                         else
 789                                         {
 790                                                 if (chan->binarymodes & CM_TOPICLOCK) *outl++ = 't';
 791                                                 chan->binarymodes &= ~CM_TOPICLOCK;
 792                                         }
 793                                 }
 794                         break;
 795
 796                         case 'n':
 797                                 MOD_RESULT = 0;
 798                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 799                                 if (!MOD_RESULT)
 800                                 {
 801                                         if (mdir)
 802                                         {
 803                                                 if (!(chan->binarymodes & CM_NOEXTERNAL)) *outl++ = 'n';
 804                                                 chan->binarymodes |= CM_NOEXTERNAL;
 805                                         }
 806                                         else
 807                                         {
 808                                                 if (chan->binarymodes & CM_NOEXTERNAL) *outl++ = 'n';
 809                                                 chan->binarymodes &= ~CM_NOEXTERNAL;
 810                                         }
 811                                 }
 812                         break;
 813
 814                         case 'm':
 815                                 MOD_RESULT = 0;
 816                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 817                                 if (!MOD_RESULT)
 818                                 {
 819                                         if (mdir)
 820                                         {
 821                                                 if (!(chan->binarymodes & CM_MODERATED)) *outl++ = 'm';
 822                                                 chan->binarymodes |= CM_MODERATED;
 823                                         }
 824                                         else
 825                                         {
 826                                                 if (chan->binarymodes & CM_MODERATED) *outl++ = 'm';
 827                                                 chan->binarymodes &= ~CM_MODERATED;
 828                                         }
 829                                 }
 830                         break;
 831
 832                         case 's':
 833                                 MOD_RESULT = 0;
 834                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 835                                 if (!MOD_RESULT)
 836                                 {
 837                                         if (mdir)
 838                                         {
 839                                                 if (!(chan->binarymodes & CM_SECRET)) *outl++ = 's';
 840                                                 chan->binarymodes |= CM_SECRET;
 841                                                 if (chan->binarymodes & CM_PRIVATE)
 842                                                 {
 843                                                         chan->binarymodes &= ~CM_PRIVATE;
 844                                                         if (mdir)
 845                                                         {
 846                                                                 *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
 847                                                         }
 848                                                 }
 849                                         }
 850                                         else
 851                                         {
 852                                                 if (chan->binarymodes & CM_SECRET) *outl++ = 's';
 853                                                 chan->binarymodes &= ~CM_SECRET;
 854                                         }
 855                                 }
 856                         break;
 857
 858                         case 'p':
 859                                 MOD_RESULT = 0;
 860                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
 861                                 if (!MOD_RESULT)
 862                                 {
 863                                         if (mdir)
 864                                         {
 865                                                 if (!(chan->binarymodes & CM_PRIVATE)) *outl++ = 'p';
 866                                                 chan->binarymodes |= CM_PRIVATE;
 867                                                 if (chan->binarymodes & CM_SECRET)
 868                                                 {
 869                                                         chan->binarymodes &= ~CM_SECRET;
 870                                                         if (mdir)
 871                                                         {
 872                                                                 *outl++ = '-'; *outl++ = 's'; *outl++ = '+';
 873                                                         }
 874                                                 }
 875                                         }
 876                                         else
 877                                         {
 878                                                 if (chan->binarymodes & CM_PRIVATE) *outl++ = 'p';
 879                                                 chan->binarymodes &= ~CM_PRIVATE;
 880                                         }
 881                                 }
 882                         break;
 883
 884                         default:
 885                                 log(DEBUG,"Preprocessing custom mode %c: modelist: %s",*modechar,chan->custom_modes);
 886                                 string_list p;
 887                                 p.clear();
 888                                 if (((!strchr(chan->custom_modes,*modechar)) && (!mdir)) || ((strchr(chan->custom_modes,*modechar)) && (mdir)))
 889                                 {
 890                                         if (!ModeIsListMode(*modechar,MT_CHANNEL))
 891                                         {
 892                                                 log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
 893                                                 break;
 894                                         }
 895                                 }
 896                                 if (ModeDefined(*modechar,MT_CHANNEL))
 897                                 {
 898                                         log(DEBUG,"A module has claimed this mode");
 899                                         if (param<pcnt)
 900                                         {
 901                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 902                                                 {
 903                                                         p.push_back(parameters[param]);
 904                                                 }
 905                                                 if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
 906                                                 {
 907                                                         p.push_back(parameters[param]);
 908                                                 }
 909                                         }
 910                                         bool handled = false;
 911                                         if (param>=pcnt)
 912                                         {
 913                                                 // we're supposed to have a parameter, but none was given... so dont handle the mode.
 914                                                 if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
 915                                                 {
 916                                                         log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
 917                                                         handled = true;
 918                                                         param++;
 919                                                 }
 920                                         }
 921                                         // BIG ASS IDIOTIC CODER WARNING!
 922                                         // Using OnRawMode on another modules mode's behavour
 923                                         // will confuse the crap out of admins! just because you CAN
 924                                         // do it, doesnt mean you SHOULD!
 925                                         MOD_RESULT = 0;
 926                                         std::string para = "";
 927                                         if (p.size())
 928                                                 para = p[0];
 929                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
 930                                         if (!MOD_RESULT)
 931                                         {
 932                                                         for (int i = 0; i <= MODCOUNT; i++)
 933                                                 {
 934                                                         if (!handled)
 935                                                         {
 936                                                                 int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
 937                                                                 if (t != 0)
 938                                                                 {
 939                                                                         log(DEBUG,"OnExtendedMode returned nonzero for a module");
 940                                                                         if (ModeIsListMode(*modechar,MT_CHANNEL))
 941                                                                         {
 942                                                                                 if (t == -1)
 943                                                                                 {
 944                                                                                         //pc++;
 945                                                                                         param++;
 946                                                                                 }
 947                                                                                 else
 948                                                                                 {
 949                                                                                         if (param < pcnt)
 950                                                                                         {
 951                                                                                                 *outl++ = *modechar;
 952                                                                                         }
 953                                                                                         outpars[pc++] = parameters[param++];
 954                                                                                 }
 955                                                                         }
 956                                                                         else
 957                                                                         {
 958                                                                                 if (param < pcnt)
 959                                                                                 {
 960                                                                                         *outl++ = *modechar;
 961                                                                                         chan->SetCustomMode(*modechar,mdir);
 962                                                                                         // include parameters in output if mode has them
 963                                                                                         if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
 964                                                                                         {
 965                                                                                                 chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir);
 966                                                                                                 outpars[pc++] = parameters[param++];
 967                                                                                         }
 968                                                                                 }
 969                                                                         }
 970                                                                         // break, because only one module can handle the mode.
 971                                                                         handled = true;
 972                                                                 }
 973                                                         }
 974                                                 }
 975                                         }
 976                                 }
 977                                 else
 978                                 {
 979                                         WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
 980                                 }
 981                         break;
 982                 }
 983         }
 984
 985         /* Null terminate it now we're done */
 986         *outl = 0;
 987
 988
 989         /************ Fast, but confusing string tidying ************/
 990         outl = outlist;
 991         while (*outl && (*outl < 'A'))
 992                 outl++;
 993         /* outl now points to the first mode character after +'s and -'s */
 994         outl--;
 995         /* Now points at first mode-modifier + or - symbol */
 996         char* trim = outl;
 997         /* Now we tidy off any trailing -'s etc */
 998         while (*trim++);
 999         trim--;
1000         while ((*--trim == '+') || (*trim == '-'))
1001                 *trim = 0;
1002         /************ Done wih the string tidy functions ************/
1003
1004
1005         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1006         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1007         {
1008                 for (ptr = 0; ptr < pc; ptr++)
1009                 {
1010                         charlcat(outl,' ',MAXBUF);
1011                         strlcat(outl,outpars[ptr],MAXBUF-1);
1012                 }
1013                 if (local)
1014                 {
1015                         log(DEBUG,"Local mode change");
1016                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1017                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1018                 }
1019                 else
1020                 {
1021                         if (servermode)
1022                         {
1023                                 if (!silent)
1024                                 {
1025                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1026                                 }
1027
1028                         }
1029                         else
1030                         {
1031                                 if (!silent)
1032                                 {
1033                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1034                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1035                                 }
1036                         }
1037                 }
1038         }
1039 }
1040
1041 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1042
1043 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1044 {
1045         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1046         // Servers can +o and -o arbitrarily
1047         if ((serveroverride == true) && (umode == 'o'))
1048         {
1049                 return true;
1050         }
1051         // RFC1459 specified modes
1052         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1053         {
1054                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1055                 return true;
1056         }
1057
1058         // user may not +o themselves or others, but an oper may de-oper other opers or themselves
1059         if ((strchr(sourcemodes,'o')) && (!adding))
1060         {
1061                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1062                 return true;
1063         }
1064         else if (umode == 'o')
1065         {
1066                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1067                 return false;
1068         }
1069
1070         // process any module-defined modes that need oper
1071         if ((ModeDefinedOper(umode,MT_CLIENT)) && (strchr(sourcemodes,'o')))
1072         {
1073                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1074                 return true;
1075         }
1076         else
1077         if (ModeDefined(umode,MT_CLIENT))
1078         {
1079                 // process any module-defined modes that don't need oper
1080                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1081                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!strchr(sourcemodes,'o')))
1082                 {
1083                         // no, this mode needs oper, and this user 'aint got what it takes!
1084                         return false;
1085                 }
1086                 return true;
1087         }
1088
1089         // anything else - return false.
1090         log(DEBUG,"umode %c not known by any ruleset",umode);
1091         return false;
1092 }
1093
1094 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1095 {
1096         userrec* s2;
1097         bool faked = false;
1098         if (!source)
1099         {
1100                 s2 = new userrec;
1101                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1102                 *s2->modes = 'o';
1103                 *(s2->modes+1) = 0;
1104                 s2->fd = -1;
1105                 source = s2;
1106                 faked = true;
1107         }
1108         string_list p;
1109         p.clear();
1110         if (ModeDefined(umode,MT_CLIENT))
1111         {
1112                 for (int i = 0; i <= MODCOUNT; i++)
1113                 {
1114                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1115                         {
1116                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1117                                 return true;
1118                         }
1119                 }
1120                 log(DEBUG,"No module claims umode %c",umode);
1121                 if (faked)
1122                 {
1123                         delete s2;
1124                         source = NULL;
1125                 }
1126                 return false;
1127         }
1128         else
1129         {
1130                 if (faked)
1131                 {
1132                         delete s2;
1133                         source = NULL;
1134                 }
1135                 return false;
1136         }
1137 }
1138
1139 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1140 {
1141         chanrec* Ptr;
1142         userrec* dest;
1143         int can_change;
1144         int direction = 1;
1145         char outpars[MAXBUF];
1146         bool next_ok = true;
1147
1148         dest = Find(parameters[0]);
1149
1150         if (!user)
1151         {
1152                 return;
1153         }
1154
1155         if ((dest) && (pcnt == 1))
1156         {
1157                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1158                 return;
1159         }
1160
1161         if ((dest) && (pcnt > 1))
1162         {
1163                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1164                 parameters[1] = (char*)tidied.c_str();
1165
1166                 char dmodes[MAXBUF];
1167                 strlcpy(dmodes,dest->modes,MAXMODES);
1168                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1169
1170                 can_change = 0;
1171                 if (user != dest)
1172                 {
1173                         if ((strchr(user->modes,'o')) || (is_uline(user->server)))
1174                         {
1175                                 can_change = 1;
1176                         }
1177                 }
1178                 else
1179                 {
1180                         can_change = 1;
1181                 }
1182                 if (!can_change)
1183                 {
1184                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1185                         return;
1186                 }
1187
1188                 outpars[0] = *parameters[1];
1189                 outpars[1] = 0;
1190                 direction = (*parameters[1] == '+');
1191
1192                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1193                         return;
1194
1195                 for (char* i = parameters[1]; *i; i++)
1196                 {
1197                         if (*i == ' ')
1198                                 continue;
1199
1200                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1201                                 next_ok = true;
1202
1203                         if (*i == '+')
1204                         {
1205                                 if ((direction != 1) && (next_ok))
1206                                 {
1207                                         charlcat(outpars,'+',MAXBUF);
1208                                         next_ok = false;
1209                                 }
1210                                 direction = 1;
1211                         }
1212                         else
1213                         if (*i == '-')
1214                         {
1215                                 if ((direction != 0) && (next_ok))
1216                                 {
1217                                         charlcat(outpars,'-',MAXBUF);
1218                                         next_ok = false;
1219                                 }
1220                                 direction = 0;
1221                         }
1222                         else
1223                         {
1224                                 can_change = 0;
1225                                 if (strchr(user->modes,'o'))
1226                                 {
1227                                         can_change = 1;
1228                                 }
1229                                 else
1230                                 {
1231                                         if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1232                                         {
1233                                                 can_change = 1;
1234                                         }
1235                                 }
1236                                 if (can_change)
1237                                 {
1238                                         if (direction == 1)
1239                                         {
1240                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1241                                                 {
1242                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1243                                                         {
1244                                                                 charlcat(dmodes,*i,MAXMODES);
1245                                                                 charlcat(outpars,*i,MAXMODES);
1246                                                                 if (*i == 'o')
1247                                                                 {
1248                                                                         FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1249                                                                 }
1250                                                         }
1251                                                 }
1252                                         }
1253                                         else
1254                                         {
1255                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1256                                                 {
1257                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1258                                                         {
1259                                                                 charlcat(outpars,*i,MAXMODES);
1260                                                                 charremove(dmodes,*i);
1261                                                                 if (*i == 'o')
1262                                                                 {
1263                                                                         *dest->oper = 0;
1264                                                                         DeleteOper(dest);
1265                                                                 }
1266                                                         }
1267                                                 }
1268                                         }
1269                                 }
1270                         }
1271                 }
1272                 if (*outpars)
1273                 {
1274                         char b[MAXBUF];
1275                         char* z = b;
1276
1277                         for (char* i = outpars; *i;)
1278                         {
1279                                 *z++ = *i++;
1280                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1281                                 {
1282                                         // someones playing silly buggers and trying
1283                                         // to put a +- or -+ into the line...
1284                                         i++;
1285                                 }
1286                                 if (!*(i+1))
1287                                 {
1288                                         // Someone's trying to make the last character in
1289                                         // the line be a + or - symbol.
1290                                         if ((*i == '-') || (*i == '+'))
1291                                         {
1292                                                 i++;
1293                                         }
1294                                 }
1295                         }
1296                         *z = 0;
1297
1298                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1299                         {
1300                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1301                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1302                         }
1303
1304                         log(DEBUG,"Stripped mode line");
1305                         log(DEBUG,"Line dest is now %s",dmodes);
1306                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1307
1308                 }
1309
1310                 return;
1311         }
1312
1313         Ptr = FindChan(parameters[0]);
1314         if (Ptr)
1315         {
1316                 if (pcnt == 1)
1317                 {
1318                         /* just /modes #channel */
1319                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr,has_channel(user,Ptr)));
1320                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1321                         return;
1322                 }
1323                 else
1324                 if (pcnt == 2)
1325                 {
1326                         char* mode = parameters[1];
1327                         if (*mode == '+')
1328                                 mode++;
1329                         int MOD_RESULT = 0;
1330                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, Ptr, *mode, "", false, 0));
1331                         if (!MOD_RESULT)
1332                         {
1333                                 if (*mode == 'b')
1334                                 {
1335
1336                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1337                                         {
1338                                                 WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
1339                                         }
1340                                         WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
1341                                         return;
1342                                 }
1343                                 if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1344                                 {
1345                                         // list of items for an extmode
1346                                         log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1347                                         FOREACH_MOD(I_OnSendList,OnSendList(user,Ptr,*mode));
1348                                         return;
1349                                 }
1350                         }
1351                 }
1352
1353                 if (((Ptr) && (!has_channel(user,Ptr))) && (!is_uline(user->server)) && (IS_LOCAL(user)))
1354                 {
1355                         WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, Ptr->name);
1356                         return;
1357                 }
1358
1359                 if (Ptr)
1360                 {
1361                         int MOD_RESULT = 0;
1362                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,Ptr,AC_GENERAL_MODE));
1363
1364                         if (MOD_RESULT == ACR_DENY)
1365                                 return;
1366                         if (MOD_RESULT == ACR_DEFAULT)
1367                         {
1368                                 if ((cstatus(user,Ptr) < STATUS_HOP) && (IS_LOCAL(user)))
1369                                 {
1370                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name);
1371                                         return;
1372                                 }
1373                         }
1374
1375                         ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false,false);
1376                 }
1377         }
1378         else
1379         {
1380                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1381         }
1382 }
1383
1384
1385
1386
1387 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1388 {
1389         chanrec* Ptr;
1390         userrec* dest;
1391         int can_change;
1392         int direction = 1;
1393         char outpars[MAXBUF];
1394         bool next_ok = true;
1395
1396         dest = Find(parameters[0]);
1397
1398         // fix: ChroNiCk found this - we cant use this as debug if its null!
1399         if (dest)
1400         {
1401                 log(DEBUG,"server_mode on %s",dest->nick);
1402         }
1403
1404         if ((dest) && (pcnt > 1))
1405         {
1406                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1407                 parameters[1] = (char*)tidied.c_str();
1408
1409                 char dmodes[MAXBUF];
1410                 strlcpy(dmodes,dest->modes,MAXBUF);
1411
1412                 outpars[0] = *parameters[1];
1413                 outpars[1] = 0;
1414                 direction = (*parameters[1] == '+');
1415
1416                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1417                         return;
1418
1419                 for (char* i = parameters[1]; *i; i++)
1420                 {
1421                         if (*i == ' ')
1422                                 continue;
1423
1424                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1425                                 next_ok = true;
1426
1427                         if (*i == '+')
1428                         {
1429                                 if ((direction != 1) && (next_ok))
1430                                 {
1431                                         next_ok = false;
1432                                         charlcat(outpars,'+',MAXBUF);
1433                                 }
1434                                 direction = 1;
1435                         }
1436                         else
1437                         if (*i == '-')
1438                         {
1439                                 if ((direction != 0) && (next_ok))
1440                                 {
1441                                         next_ok = false;
1442                                         charlcat(outpars,'-',MAXBUF);
1443                                 }
1444                                 direction = 0;
1445                         }
1446                         else
1447                         {
1448                                 log(DEBUG,"begin mode processing entry");
1449                                 can_change = 1;
1450                                 if (can_change)
1451                                 {
1452                                         if (direction == 1)
1453                                         {
1454                                                 log(DEBUG,"umode %c being added",*i);
1455                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1456                                                 {
1457                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1458                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1459                                                         {
1460                                                                 charlcat(dmodes,*i,MAXMODES);
1461                                                                 charlcat(outpars,*i,MAXMODES);
1462                                                         }
1463                                                 }
1464                                         }
1465                                         else
1466                                         {
1467                                                 // can only remove a mode they already have
1468                                                 log(DEBUG,"umode %c being removed",*i);
1469                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1470                                                 {
1471                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1472                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1473                                                         {
1474                                                                 charlcat(outpars,*i,MAXMODES);
1475                                                                 charremove(dmodes,*i);
1476                                                         }
1477                                                 }
1478                                         }
1479                                 }
1480                         }
1481                 }
1482                 if (*outpars)
1483                 {
1484                         char b[MAXBUF];
1485                         char* z = b;
1486
1487                         for (char* i = outpars; *i;)
1488                         {
1489                                 *z++ = *i++;
1490                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1491                                 {
1492                                         // someones playing silly buggers and trying
1493                                         // to put a +- or -+ into the line...
1494                                         i++;
1495                                 }
1496                                 if (!*(i+1))
1497                                 {
1498                                         // Someone's trying to make the last character in
1499                                         // the line be a + or - symbol.
1500                                         if ((*i == '-') || (*i == '+'))
1501                                         {
1502                                                 i++;
1503                                         }
1504                                 }
1505                         }
1506                         *z = 0;
1507
1508                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1509                         {
1510                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1511                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1512                         }
1513
1514                         log(DEBUG,"Stripped mode line");
1515                         log(DEBUG,"Line dest is now %s",dmodes);
1516                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1517
1518                 }
1519
1520                 return;
1521         }
1522
1523         Ptr = FindChan(parameters[0]);
1524         if (Ptr)
1525         {
1526                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1527         }
1528         else
1529         {
1530                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1531         }
1532 }