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 char* ModeParser::GiveOps(userrec *user,char *dest,chanrec *chan,int status)
  58 {
  59         userrec *d;
  60
  61         if ((!user) || (!dest) || (!chan) || (!*dest))
  62         {
  63                 log(DEFAULT,"*** BUG *** GiveOps was given an invalid parameter");
  64                 return NULL;
  65         }
  66         d = Find(dest);
  67         if (!d)
  68         {
  69                 log(DEFAULT,"the target nickname given to GiveOps couldnt be found");
  70                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
  71                 return NULL;
  72         }
  73         else
  74         {
  75                 if (user->server == d->server)
  76                 {
  77                         int MOD_RESULT = 0;
  78                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_OP));
  79
  80                         if (MOD_RESULT == ACR_DENY)
  81                                 return NULL;
  82                         if (MOD_RESULT == ACR_DEFAULT)
  83                         {
  84                                 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
  85                                 {
  86                                         log(DEBUG,"%s cant give ops to %s because they nave status %d and needs %d",user->nick,dest,status,STATUS_OP);
  87                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
  88                                         return NULL;
  89                                 }
  90                         }
  91                 }
  92
  93
  94                 for (unsigned int i = 0; i < d->chans.size(); i++)
  95                 {
  96                         if ((d->chans[i].channel != NULL) && (chan != NULL))
  97                         if (d->chans[i].channel == chan)
  98                         {
  99                                 if (d->chans[i].uc_modes & UCMODE_OP)
 100                                 {
 101                                         /* mode already set on user, dont allow multiple */
 102                                         return NULL;
 103                                 }
 104                                 d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_OP;
 105                                 d->chans[i].channel->AddOppedUser((char*)d);
 106                                 log(DEBUG,"gave ops: %s %s",d->chans[i].channel->name,d->nick);
 107                                 return d->nick;
 108                         }
 109                 }
 110                 log(DEFAULT,"The target channel given to GiveOps was not in the users mode list");
 111         }
 112         return NULL;
 113 }
 114
 115 char* ModeParser::GiveHops(userrec *user,char *dest,chanrec *chan,int status)
 116 {
 117         userrec *d;
 118
 119         if ((!user) || (!dest) || (!chan) || (!*dest))
 120         {
 121                 log(DEFAULT,"*** BUG *** GiveHops was given an invalid parameter");
 122                 return NULL;
 123         }
 124
 125         d = Find(dest);
 126         if (!d)
 127         {
 128                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
 129                 return NULL;
 130         }
 131         else
 132         {
 133                 if (user->server == d->server)
 134                 {
 135                         int MOD_RESULT = 0;
 136                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_HALFOP));
 137
 138                         if (MOD_RESULT == ACR_DENY)
 139                                 return NULL;
 140                         if (MOD_RESULT == ACR_DEFAULT)
 141                         {
 142                                 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 143                                 {
 144                                         WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name);
 145                                         return NULL;
 146                                 }
 147                         }
 148                 }
 149
 150                 for (unsigned int i = 0; i < d->chans.size(); i++)
 151                 {
 152                         if ((d->chans[i].channel != NULL) && (chan != NULL))
 153                         if (d->chans[i].channel == chan)
 154                         {
 155                                 if (d->chans[i].uc_modes & UCMODE_HOP)
 156                                 {
 157                                         /* mode already set on user, dont allow multiple */
 158                                         return NULL;
 159                                 }
 160                                 d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_HOP;
 161                                 d->chans[i].channel->AddHalfoppedUser((char*)d);
 162                                 log(DEBUG,"gave h-ops: %s %s",d->chans[i].channel->name,d->nick);
 163                                 return d->nick;
 164                         }
 165                 }
 166         }
 167         return NULL;
 168 }
 169
 170 char* ModeParser::GiveVoice(userrec *user,char *dest,chanrec *chan,int status)
 171 {
 172         userrec *d;
 173
 174         if ((!user) || (!dest) || (!chan) || (!*dest))
 175         {
 176                 log(DEFAULT,"*** BUG *** GiveVoice was given an invalid parameter");
 177                 return NULL;
 178         }
 179
 180         d = Find(dest);
 181         if (!d)
 182         {
 183                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
 184                 return NULL;
 185         }
 186         else
 187         {
 188                 if (user->server == d->server)
 189                 {
 190                         int MOD_RESULT = 0;
 191                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_VOICE));
 192
 193                         if (MOD_RESULT == ACR_DENY)
 194                                 return NULL;
 195                         if (MOD_RESULT == ACR_DEFAULT)
 196                         {
 197                                 if ((status < STATUS_HOP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 198                                 {
 199                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 200                                         return NULL;
 201                                 }
 202                         }
 203                 }
 204
 205                 for (unsigned int i = 0; i < d->chans.size(); i++)
 206                 {
 207                         if ((d->chans[i].channel != NULL) && (chan != NULL))
 208                         if (d->chans[i].channel == chan)
 209                         {
 210                                 if (d->chans[i].uc_modes & UCMODE_VOICE)
 211                                 {
 212                                         /* mode already set on user, dont allow multiple */
 213                                         return NULL;
 214                                 }
 215                                 d->chans[i].uc_modes = d->chans[i].uc_modes | UCMODE_VOICE;
 216                                 d->chans[i].channel->AddVoicedUser((char*)d);
 217                                 log(DEBUG,"gave voice: %s %s",d->chans[i].channel->name,d->nick);
 218                                 return d->nick;
 219                         }
 220                 }
 221         }
 222         return NULL;
 223 }
 224
 225 char* ModeParser::TakeOps(userrec *user,char *dest,chanrec *chan,int status)
 226 {
 227         userrec *d;
 228
 229         if ((!user) || (!dest) || (!chan) || (!*dest))
 230         {
 231                 log(DEFAULT,"*** BUG *** TakeOps was given an invalid parameter");
 232                 return NULL;
 233         }
 234
 235         d = Find(dest);
 236         if (!d)
 237         {
 238                 log(DEBUG,"TakeOps couldnt resolve the target nickname: %s",dest);
 239                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
 240                 return NULL;
 241         }
 242         else
 243         {
 244                 if (user->server == d->server)
 245                 {
 246                         int MOD_RESULT = 0;
 247                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEOP));
 248
 249                         if (MOD_RESULT == ACR_DENY)
 250                                 return NULL;
 251                         if (MOD_RESULT == ACR_DEFAULT)
 252                         {
 253                                 if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user)) && (IS_LOCAL(user)))
 254                                 {
 255                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 256                                         return NULL;
 257                                 }
 258                         }
 259                 }
 260
 261                 for (unsigned int i = 0; i < d->chans.size(); i++)
 262                 {
 263                         if ((d->chans[i].channel != NULL) && (chan != NULL))
 264                         if (d->chans[i].channel == chan)
 265                         {
 266                                 if ((d->chans[i].uc_modes & UCMODE_OP) == 0)
 267                                 {
 268                                         /* mode already set on user, dont allow multiple */
 269                                         return NULL;
 270                                 }
 271                                 d->chans[i].uc_modes ^= UCMODE_OP;
 272                                 d->chans[i].channel->DelOppedUser((char*)d);
 273                                 log(DEBUG,"took ops: %s %s",d->chans[i].channel->name,d->nick);
 274                                 return d->nick;
 275                         }
 276                 }
 277                 log(DEBUG,"TakeOps couldnt locate the target channel in the target users list");
 278         }
 279         return NULL;
 280 }
 281
 282 char* ModeParser::TakeHops(userrec *user,char *dest,chanrec *chan,int status)
 283 {
 284         userrec *d;
 285
 286         if ((!user) || (!dest) || (!chan) || (!*dest))
 287         {
 288                 log(DEFAULT,"*** BUG *** TakeHops was given an invalid parameter");
 289                 return NULL;
 290         }
 291
 292         d = Find(dest);
 293         if (!d)
 294         {
 295                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
 296                 return NULL;
 297         }
 298         else
 299         {
 300                 if (user->server == d->server)
 301                 {
 302                         int MOD_RESULT = 0;
 303                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEHALFOP));
 304
 305                         if (MOD_RESULT == ACR_DENY)
 306                                 return NULL;
 307                         if (MOD_RESULT == ACR_DEFAULT)
 308                         {
 309                                 /* Tweak by Brain suggested by w00t, allow a halfop to dehalfop themselves */
 310                                 if ((user != d) && ((status < STATUS_OP) && (!is_uline(user->server))) && (IS_LOCAL(user)))
 311                                 {
 312                                         WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name);
 313                                         return NULL;
 314                                 }
 315                         }
 316                 }
 317
 318                 for (unsigned int i = 0; i < d->chans.size(); i++)
 319                 {
 320                         if ((d->chans[i].channel != NULL) && (chan != NULL))
 321                         if (d->chans[i].channel == chan)
 322                         {
 323                                 if ((d->chans[i].uc_modes & UCMODE_HOP) == 0)
 324                                 {
 325                                         /* mode already set on user, dont allow multiple */
 326                                         return NULL;
 327                                 }
 328                                 d->chans[i].uc_modes ^= UCMODE_HOP;
 329                                 d->chans[i].channel->DelHalfoppedUser((char*)d);
 330                                 log(DEBUG,"took h-ops: %s %s",d->chans[i].channel->name,d->nick);
 331                                 return d->nick;
 332                         }
 333                 }
 334         }
 335         return NULL;
 336 }
 337
 338 char* ModeParser::TakeVoice(userrec *user,char *dest,chanrec *chan,int status)
 339 {
 340         userrec *d;
 341
 342         if ((!user) || (!dest) || (!chan) || (!*dest))
 343         {
 344                 log(DEFAULT,"*** BUG *** TakeVoice was given an invalid parameter");
 345                 return NULL;
 346         }
 347
 348         d = Find(dest);
 349         if (!d)
 350         {
 351                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest);
 352                 return NULL;
 353         }
 354         else
 355         {
 356                 if (user->server == d->server)
 357                 {
 358                         int MOD_RESULT = 0;
 359                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEVOICE));
 360
 361                         if (MOD_RESULT == ACR_DENY)
 362                                 return NULL;
 363                         if (MOD_RESULT == ACR_DEFAULT)
 364                         {
 365                                 if ((status < STATUS_HOP) && (!is_uline(user->server)) && (IS_LOCAL(user)))
 366                                 {
 367                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name);
 368                                         return NULL;
 369                                 }
 370                         }
 371                 }
 372
 373                 for (unsigned int i = 0; i < d->chans.size(); i++)
 374                 {
 375                         if ((d->chans[i].channel != NULL) && (chan != NULL))
 376                         if (d->chans[i].channel == chan)
 377                         {
 378                                 if ((d->chans[i].uc_modes & UCMODE_VOICE) == 0)
 379                                 {
 380                                         /* mode already set on user, dont allow multiple */
 381                                         return NULL;
 382                                 }
 383                                 d->chans[i].uc_modes ^= UCMODE_VOICE;
 384                                 d->chans[i].channel->DelVoicedUser((char*)d);
 385                                 log(DEBUG,"took voice: %s %s",d->chans[i].channel->name,d->nick);
 386                                 return d->nick;
 387                         }
 388                 }
 389         }
 390         return NULL;
 391 }
 392
 393 char* ModeParser::AddBan(userrec *user,char *dest,chanrec *chan,int status)
 394 {
 395         BanItem b;
 396         int toomanyexclamation = 0;
 397         int toomanyat = 0;
 398
 399         if ((!user) || (!dest) || (!chan) || (!*dest))
 400         {
 401                 log(DEFAULT,"*** BUG *** AddBan was given an invalid parameter");
 402                 return NULL;
 403         }
 404
 405         for (char* i = dest; *i; i++)
 406         {
 407                 if ((*i < 32) || (*i > 126))
 408                 {
 409                         return NULL;
 410                 }
 411                 else if (*i == '!')
 412                 {
 413                         toomanyexclamation++;
 414                 }
 415                 else if (*i == '@')
 416                 {
 417                         toomanyat++;
 418                 }
 419         }
 420
 421         if (toomanyexclamation != 1 || toomanyat != 1)
 422                 /*
 423                  * this stops sillyness like n!u!u!u@h, though note that most
 424                  * ircds don't actually verify banmask validity. --w00t
 425                  */
 426                 return NULL;
 427
 428         long maxbans = GetMaxBans(chan->name);
 429         if ((unsigned)chan->bans.size() > (unsigned)maxbans)
 430         {
 431                 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);
 432                 return NULL;
 433         }
 434
 435         log(DEBUG,"AddBan: %s %s",chan->name,user->nick);
 436
 437         int MOD_RESULT = 0;
 438         FOREACH_RESULT(I_OnAddBan,OnAddBan(user,chan,dest));
 439         if (MOD_RESULT)
 440                 return NULL;
 441
 442         TidyBan(dest);
 443         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 444         {
 445                 if (!strcasecmp(i->data,dest))
 446                 {
 447                         // dont allow a user to set the same ban twice
 448                         return NULL;
 449                 }
 450         }
 451
 452         b.set_time = TIME;
 453         strlcpy(b.data,dest,MAXBUF);
 454         if (*user->nick)
 455         {
 456                 strlcpy(b.set_by,user->nick,NICKMAX-1);
 457         }
 458         else
 459         {
 460                 strlcpy(b.set_by,Config->ServerName,NICKMAX-1);
 461         }
 462         chan->bans.push_back(b);
 463         return dest;
 464 }
 465
 466 char* ModeParser::TakeBan(userrec *user,char *dest,chanrec *chan,int status)
 467 {
 468         if ((!user) || (!dest) || (!chan) || (!*dest)) {
 469                 log(DEFAULT,"*** BUG *** TakeBan was given an invalid parameter");
 470                 return 0;
 471         }
 472
 473         log(DEBUG,"del_ban: %s %s",chan->name,user->nick);
 474         for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++)
 475         {
 476                 if (!strcasecmp(i->data,dest))
 477                 {
 478                         int MOD_RESULT = 0;
 479                         FOREACH_RESULT(I_OnDelBan,OnDelBan(user,chan,dest));
 480                         if (MOD_RESULT)
 481                                 return NULL;
 482                         chan->bans.erase(i);
 483                         return dest;
 484                 }
 485         }
 486         return NULL;
 487 }
 488
 489 // tidies up redundant modes, e.g. +nt-nt+i becomes +-+i,
 490 // a section further down the chain tidies up the +-+- crap.
 491 std::string ModeParser::CompressModes(std::string modes,bool channelmodes)
 492 {
 493         int counts[127];
 494         bool active[127];
 495         memset(counts,0,sizeof(counts));
 496         memset(active,0,sizeof(active));
 497         for (unsigned int i = 0; i < modes.length(); i++)
 498         {
 499                 if ((modes[i] == '+') || (modes[i] == '-'))
 500                         continue;
 501                 if (channelmodes)
 502                 {
 503                         if ((strchr("itnmsp",modes[i])) || ((ModeDefined(modes[i],MT_CHANNEL)) && (ModeDefinedOn(modes[i],MT_CHANNEL)==0) && (ModeDefinedOff(modes[i],MT_CHANNEL)==0)))
 504                         {
 505                                 log(DEBUG,"Tidy mode %c",modes[i]);
 506                                 counts[(unsigned int)modes[i]]++;
 507                                 active[(unsigned int)modes[i]] = true;
 508                         }
 509                 }
 510                 else
 511                 {
 512                         log(DEBUG,"Tidy mode %c",modes[i]);
 513                         counts[(unsigned int)modes[i]]++;
 514                         active[(unsigned int)modes[i]] = true;
 515                 }
 516         }
 517         for (int j = 65; j < 127; j++)
 518         {
 519                 if ((counts[j] > 1) && (active[j] == true))
 520                 {
 521                         static char v[2];
 522                         v[0] = (unsigned char)j;
 523                         v[1] = '\0';
 524                         std::string mode_str = v;
 525                         std::string::size_type pos = modes.find(mode_str);
 526                         if (pos != std::string::npos)
 527                         {
 528                                 log(DEBUG,"all occurances of mode %c to be deleted...",(unsigned char)j);
 529                                 while (modes.find(mode_str) != std::string::npos)
 530                                         modes.erase(modes.find(mode_str),1);
 531                                 log(DEBUG,"New mode line: %s",modes.c_str());
 532                         }
 533                 }
 534         }
 535         return modes;
 536 }
 537
 538 void ModeParser::ProcessModes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent, bool local)
 539 {
 540         if (!parameters) {
 541                 log(DEFAULT,"*** BUG *** process_modes was given an invalid parameter");
 542                 return;
 543         }
 544
 545         char outlist[MAXBUF];
 546         char *outpars[32];
 547         int param = 2;
 548         int pc = 0;
 549         int ptr = 0;
 550         int mdir = 1;
 551         char* r = NULL;
 552         bool k_set = false, l_set = false, previously_set_l = false, previously_unset_l = false, previously_set_k = false, previously_unset_k = false;
 553
 554         if (pcnt < 2)
 555         {
 556                 return;
 557         }
 558
 559         int MOD_RESULT = 0;
 560
 561         if (IS_LOCAL(user))
 562         {
 563                 FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,chan,AC_GENERAL_MODE));
 564                 if (MOD_RESULT == ACR_DENY)
 565                         return;
 566         }
 567
 568         log(DEBUG,"process_modes: start: parameters=%d",pcnt);
 569
 570         char* modelist = parameters[1];         /* mode list, e.g. +oo-o *
 571                                                  * parameters[2] onwards are parameters for
 572                                                  * modes that require them :) */
 573         *outlist = *modelist;
 574         char* outl = outlist+1;
 575
 576         mdir = (*modelist == '+');
 577
 578         log(DEBUG,"process_modes: modelist: %s",modelist);
 579
 580         std::string tidied = this->CompressModes(modelist,true);
 581         strlcpy(modelist,tidied.c_str(),MAXBUF);
 582
 583         int len = tidied.length();
 584         while (modelist[len-1] == ' ')
 585                 modelist[--len] = '\0';
 586
 587         bool next_cant_be_modifier = false;
 588         char* modechar;
 589
 590         for (modechar = (modelist + 1); *modechar; ptr++, modechar++)
 591         {
 592                 r = NULL;
 593
 594                 /* If we have more than MAXMODES changes in one line,
 595                  * drop all after the MAXMODES
 596                  */
 597                 if (pc > MAXMODES-1)
 598                         break;
 599
 600                 log(DEBUG,"Mode %c",*modechar);
 601
 602                 {
 603                         switch (*modechar)
 604                         {
 605                                 case '-':
 606                                         *outl++ = '-';
 607                                         mdir = 0;
 608                                         next_cant_be_modifier = true;
 609
 610                                 break;
 611
 612                                 case '+':
 613                                         *outl++ = '+';
 614                                         mdir = 1;
 615                                         next_cant_be_modifier = true;
 616                                 break;
 617
 618                                 case 'o':
 619                                         log(DEBUG,"Ops");
 620                                         if ((param >= pcnt)) break;
 621                                         log(DEBUG,"Enough parameters left");
 622                                         r = NULL;
 623                                         if (mdir == 1)
 624                                         {
 625                                                 MOD_RESULT = 0;
 626                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1));
 627                                                 if (!MOD_RESULT)
 628                                                 {
 629                                                         log(DEBUG,"calling GiveOps");
 630                                                         r = GiveOps(user,parameters[param++],chan,status);
 631                                                 }
 632                                                 else param++;
 633                                         }
 634                                         else
 635                                         {
 636                                                 MOD_RESULT = 0;
 637                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1));
 638                                                 if (!MOD_RESULT)
 639                                                 {
 640                                                         log(DEBUG,"calling TakeOps");
 641                                                         r = TakeOps(user,parameters[param++],chan,status);
 642                                                 }
 643                                                 else param++;
 644                                         }
 645                                         if (r)
 646                                         {
 647                                                 *outl++ = 'o';
 648                                                 outpars[pc++] = r;
 649                                         }
 650                                 break;
 651
 652                                 case 'h':
 653                                         if (((param >= pcnt)) || (!Config->AllowHalfop)) break;
 654                                         r = NULL;
 655                                         if (mdir == 1)
 656                                         {
 657                                                 MOD_RESULT = 0;
 658                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1));
 659                                                 if (!MOD_RESULT)
 660                                                 {
 661                                                         r = GiveHops(user,parameters[param++],chan,status);
 662                                                 }
 663                                                 else param++;
 664                                         }
 665                                         else
 666                                         {
 667                                                 MOD_RESULT = 0;
 668                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1));
 669                                                 if (!MOD_RESULT)
 670                                                 {
 671                                                         r = TakeHops(user,parameters[param++],chan,status);
 672                                                 }
 673                                                 else param++;
 674                                         }
 675                                         if (r)
 676                                         {
 677                                                 *outl++ = 'h';
 678                                                 outpars[pc++] = r;
 679                                         }
 680                                 break;
 681
 682
 683                                 case 'v':
 684                                         if ((param >= pcnt)) break;
 685                                         r = NULL;
 686                                         if (mdir == 1)
 687                                         {
 688                                                 MOD_RESULT = 0;
 689                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1));
 690                                                 if (!MOD_RESULT)
 691                                                 {
 692                                                         r = GiveVoice(user,parameters[param++],chan,status);
 693                                                 }
 694                                                 else param++;
 695                                         }
 696                                         else
 697                                         {
 698                                                 MOD_RESULT = 0;
 699                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1));
 700                                                 if (!MOD_RESULT)
 701                                                 {
 702                                                         r = TakeVoice(user,parameters[param++],chan,status);
 703                                                 }
 704                                                 else param++;
 705                                         }
 706                                         if (r)
 707                                         {
 708                                                 *outl++ = 'v';
 709                                                 outpars[pc++] = r;
 710                                         }
 711                                 break;
 712
 713                                 case 'b':
 714                                         if ((param >= pcnt)) break;
 715                                         r = NULL;
 716                                         if (mdir == 1)
 717                                         {
 718                                                 MOD_RESULT = 0;
 719                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1));
 720                                                 if (!MOD_RESULT)
 721                                                 {
 722                                                         r = AddBan(user,parameters[param++],chan,status);
 723                                                 }
 724                                                 else param++;
 725                                         }
 726                                         else
 727                                         {
 728                                                 MOD_RESULT = 0;
 729                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1));
 730                                                 if (!MOD_RESULT)
 731                                                 {
 732                                                         r = TakeBan(user,parameters[param++],chan,status);
 733                                                 }
 734                                                 else param++;
 735                                         }
 736                                         if (r)
 737                                         {
 738                                                 *outl++ = 'b';
 739                                                 outpars[pc++] = parameters[param-1];
 740                                         }
 741                                 break;
 742
 743
 744                                 case 'k':
 745                                         if ((param >= pcnt))
 746                                                 break;
 747
 748                                         if (mdir == 1)
 749                                         {
 750                                                 if (k_set)
 751                                                         break;
 752
 753                                                 if (previously_unset_k)
 754                                                         break;
 755                                                 previously_set_k = true;
 756
 757                                                 if (!*chan->key)
 758                                                 {
 759                                                         MOD_RESULT = 0;
 760                                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1));
 761                                                         if (!MOD_RESULT)
 762                                                         {
 763                                                                 *outl++ = 'k';
 764                                                                 char key[MAXBUF];
 765                                                                 strlcpy(key,parameters[param++],32);
 766                                                                 outpars[pc++] = key;
 767                                                                 strlcpy(chan->key,key,MAXBUF);
 768                                                                 k_set = true;
 769                                                         }
 770                                                         else param++;
 771                                                 }
 772                                         }
 773                                         else
 774                                         {
 775                                                 /* checks on -k are case sensitive and only accurate to the
 776                                                    first 32 characters */
 777                                                 if (previously_set_k)
 778                                                         break;
 779                                                 previously_unset_k = true;
 780
 781                                                 char key[MAXBUF];
 782                                                 MOD_RESULT = 0;
 783                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1));
 784                                                 if (!MOD_RESULT)
 785                                                 {
 786                                                         strlcpy(key,parameters[param++],32);
 787                                                         /* only allow -k if correct key given */
 788                                                         if (!strcmp(chan->key,key))
 789                                                         {
 790                                                                 *outl++ = 'k';
 791                                                                 *chan->key = 0;
 792                                                                 outpars[pc++] = key;
 793                                                         }
 794                                                 }
 795                                                 else param++;
 796                                         }
 797                                 break;
 798
 799                                 case 'l':
 800                                         if (mdir == 0)
 801                                         {
 802                                                 if (previously_set_l)
 803                                                         break;
 804                                                 previously_unset_l = true;
 805                                                 MOD_RESULT = 0;
 806                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0));
 807                                                 if (!MOD_RESULT)
 808                                                 {
 809                                                         if (chan->limit)
 810                                                         {
 811                                                                 *outl++ = 'l';
 812                                                                 chan->limit = 0;
 813                                                         }
 814                                                 }
 815                                         }
 816
 817                                         if ((param >= pcnt)) break;
 818                                         if (mdir == 1)
 819                                         {
 820                                                 if (l_set)
 821                                                         break;
 822                                                 if (previously_unset_l)
 823                                                         break;
 824                                                 previously_set_l = true;
 825                                                 bool invalid = false;
 826                                                 for (char* f = parameters[param]; *f; f++)
 827                                                 {
 828                                                         if ((*f < '0') || (*f > '9'))
 829                                                         {
 830                                                                 invalid = true;
 831                                                         }
 832                                                 }
 833                                                 /* If the limit is < 1, or the new limit is the current limit, dont allow */
 834                                                 if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit)))
 835                                                 {
 836                                                         invalid = true;
 837                                                 }
 838
 839                                                 if (invalid)
 840                                                         break;
 841
 842                                                 MOD_RESULT = 0;
 843                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1));
 844                                                 if (!MOD_RESULT)
 845                                                 {
 846
 847                                                         chan->limit = atoi(parameters[param]);
 848
 849                                                         // reported by mech: large values cause underflow
 850                                                         if (chan->limit < 0)
 851                                                                 chan->limit = 0x7FFF;
 852                                                 }
 853
 854                                                 if (chan->limit)
 855                                                 {
 856                                                         *outl++ = 'l';
 857                                                         outpars[pc++] = parameters[param++];
 858                                                         l_set = true;
 859                                                 }
 860                                         }
 861                                 break;
 862
 863                                 case 'i':
 864                                         MOD_RESULT = 0;
 865                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0));
 866                                         if (!MOD_RESULT)
 867                                         {
 868                                                 if (mdir)
 869                                                 {
 870                                                         if (!(chan->binarymodes & CM_INVITEONLY)) *outl++ = 'i';
 871                                                         chan->binarymodes |= CM_INVITEONLY;
 872                                                 }
 873                                                 else
 874                                                 {
 875                                                         if (chan->binarymodes & CM_INVITEONLY) *outl++ = 'i';
 876                                                         chan->binarymodes &= ~CM_INVITEONLY;
 877                                                 }
 878                                         }
 879                                 break;
 880
 881                                 case 't':
 882                                         MOD_RESULT = 0;
 883                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0));
 884                                         if (!MOD_RESULT)
 885                                         {
 886                                                 if (mdir)
 887                                                 {
 888                                                         if (!(chan->binarymodes & CM_TOPICLOCK)) *outl++ = 't';
 889                                                         chan->binarymodes |= CM_TOPICLOCK;
 890                                                 }
 891                                                 else
 892                                                 {
 893                                                         if (chan->binarymodes & CM_TOPICLOCK) *outl++ = 't';
 894                                                         chan->binarymodes &= ~CM_TOPICLOCK;
 895                                                 }
 896                                         }
 897                                 break;
 898
 899                                 case 'n':
 900                                         MOD_RESULT = 0;
 901                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0));
 902                                         if (!MOD_RESULT)
 903                                         {
 904                                                 if (mdir)
 905                                                 {
 906                                                         if (!(chan->binarymodes & CM_NOEXTERNAL)) *outl++ = 'n';
 907                                                         chan->binarymodes |= CM_NOEXTERNAL;
 908                                                 }
 909                                                 else
 910                                                 {
 911                                                         if (chan->binarymodes & CM_NOEXTERNAL) *outl++ = 'n';
 912                                                         chan->binarymodes &= ~CM_NOEXTERNAL;
 913                                                 }
 914                                         }
 915                                 break;
 916
 917                                 case 'm':
 918                                         MOD_RESULT = 0;
 919                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0));
 920                                         if (!MOD_RESULT)
 921                                         {
 922                                                 if (mdir)
 923                                                 {
 924                                                         if (!(chan->binarymodes & CM_MODERATED)) *outl++ = 'm';
 925                                                         chan->binarymodes |= CM_MODERATED;
 926                                                 }
 927                                                 else
 928                                                 {
 929                                                         if (chan->binarymodes & CM_MODERATED) *outl++ = 'm';
 930                                                         chan->binarymodes &= ~CM_MODERATED;
 931                                                 }
 932                                         }
 933                                 break;
 934
 935                                 case 's':
 936                                         MOD_RESULT = 0;
 937                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0));
 938                                         if (!MOD_RESULT)
 939                                         {
 940                                                 if (mdir)
 941                                                 {
 942                                                         if (!(chan->binarymodes & CM_SECRET)) *outl++ = 's';
 943                                                         chan->binarymodes |= CM_SECRET;
 944                                                         if (chan->binarymodes & CM_PRIVATE)
 945                                                         {
 946                                                                 chan->binarymodes &= ~CM_PRIVATE;
 947                                                                 if (mdir)
 948                                                                 {
 949                                                                         *outl++ = '-'; *outl++ = 'p'; *outl++ = '+';
 950                                                                 }
 951                                                         }
 952                                                 }
 953                                                 else
 954                                                 {
 955                                                         if (chan->binarymodes & CM_SECRET) *outl++ = 's';
 956                                                         chan->binarymodes &= ~CM_SECRET;
 957                                                 }
 958                                         }
 959                                 break;
 960
 961                                 case 'p':
 962                                         MOD_RESULT = 0;
 963                                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0));
 964                                         if (!MOD_RESULT)
 965                                         {
 966                                                 if (mdir)
 967                                                 {
 968                                                         if (!(chan->binarymodes & CM_PRIVATE)) *outl++ = 'p';
 969                                                         chan->binarymodes |= CM_PRIVATE;
 970                                                         if (chan->binarymodes & CM_SECRET)
 971                                                         {
 972                                                                 chan->binarymodes &= ~CM_SECRET;
 973                                                                 if (mdir)
 974                                                                 {
 975                                                                         *outl++ = '-'; *outl++ = 's'; *outl++ = '+';
 976                                                                 }
 977                                                         }
 978                                                 }
 979                                                 else
 980                                                 {
 981                                                         if (chan->binarymodes & CM_PRIVATE) *outl++ = 'p';
 982                                                         chan->binarymodes &= ~CM_PRIVATE;
 983                                                 }
 984                                         }
 985                                 break;
 986
 987                                 default:
 988                                         log(DEBUG,"Preprocessing custom mode %c: modelist: %s",*modechar,chan->custom_modes);
 989                                         string_list p;
 990                                         p.clear();
 991                                         if (((!strchr(chan->custom_modes,*modechar)) && (!mdir)) || ((strchr(chan->custom_modes,*modechar)) && (mdir)))
 992                                         {
 993                                                 if (!ModeIsListMode(*modechar,MT_CHANNEL))
 994                                                 {
 995                                                         log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name);
 996                                                         break;
 997                                                 }
 998                                         }
 999                                         if (ModeDefined(*modechar,MT_CHANNEL))
1000                                         {
1001                                                 log(DEBUG,"A module has claimed this mode");
1002                                                 if (param<pcnt)
1003                                                 {
1004                                                         if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
1005                                                         {
1006                                                                 p.push_back(parameters[param]);
1007                                                         }
1008                                                         if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))
1009                                                         {
1010                                                                 p.push_back(parameters[param]);
1011                                                         }
1012                                                 }
1013                                                 bool handled = false;
1014                                                 if (param>=pcnt)
1015                                                 {
1016                                                         // we're supposed to have a parameter, but none was given... so dont handle the mode.
1017                                                         if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)))
1018                                                         {
1019                                                                 log(DEBUG,"Not enough parameters for module-mode %c",*modechar);
1020                                                                 handled = true;
1021                                                                 param++;
1022                                                         }
1023                                                 }
1024
1025                                                 // BIG ASS IDIOTIC CODER WARNING!
1026                                                 // Using OnRawMode on another modules mode's behavour
1027                                                 // will confuse the crap out of admins! just because you CAN
1028                                                 // do it, doesnt mean you SHOULD!
1029                                                 MOD_RESULT = 0;
1030                                                 std::string para = "";
1031                                                 if (p.size())
1032                                                         para = p[0];
1033                                                 FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt));
1034                                                 if (!MOD_RESULT)
1035                                                 {
1036                                                         for (int i = 0; i <= MODCOUNT; i++)
1037                                                         {
1038                                                                 if (!handled)
1039                                                                 {
1040                                                                         int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p);
1041                                                                         if (t != 0)
1042                                                                         {
1043                                                                                 log(DEBUG,"OnExtendedMode returned nonzero for a module");
1044                                                                                 if (ModeIsListMode(*modechar,MT_CHANNEL))
1045                                                                                 {
1046                                                                                         if (t == -1)
1047                                                                                         {
1048                                                                                                 //pc++;
1049                                                                                                 param++;
1050                                                                                         }
1051                                                                                         else
1052                                                                                         {
1053                                                                                                 if (param < pcnt)
1054                                                                                                 {
1055                                                                                                         *outl++ = *modechar;
1056                                                                                                 }
1057                                                                                                 outpars[pc++] = parameters[param++];
1058                                                                                         }
1059                                                                                 }
1060                                                                                 else
1061                                                                                 {
1062                                                                                         if (param < pcnt)
1063                                                                                         {
1064                                                                                                 *outl++ = *modechar;
1065                                                                                                 chan->SetCustomMode(*modechar,mdir);
1066                                                                                                 // include parameters in output if mode has them
1067                                                                                                 if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir))
1068                                                                                                 {
1069                                                                                                         chan->SetCustomModeParam(modelist[ptr],parameters[param],mdir);
1070                                                                                                         outpars[pc++] = parameters[param++];
1071                                                                                                 }
1072                                                                                         }
1073                                                                                 }
1074                                                                                 // break, because only one module can handle the mode.
1075                                                                                 handled = true;
1076                                                                         }
1077                                                                 }
1078                                                         }
1079                                                 }
1080                                         }
1081                                         else
1082                                         {
1083                                                 WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar);
1084                                         }
1085                                 break;
1086
1087                         }
1088                 }
1089         }
1090
1091         /* Null terminate it now we're done */
1092         *outl = 0;
1093
1094
1095         /************ Fast, but confusing string tidying ************/
1096         outl = outlist;
1097         while (*outl && (*outl < 'A'))
1098                 outl++;
1099         /* outl now points to the first mode character after +'s and -'s */
1100         outl--;
1101         /* Now points at first mode-modifier + or - symbol */
1102         char* trim = outl;
1103         /* Now we tidy off any trailing -'s etc */
1104         while (*trim++);
1105         trim--;
1106         while ((*--trim == '+') || (*trim == '-'))
1107                 *trim = 0;
1108         /************ Done wih the string tidy functions ************/
1109
1110
1111         /* The mode change must be at least two characters long (+ or - and at least one mode) */
1112         if (((*outl == '+') || (*outl == '-')) && *(outl+1))
1113         {
1114                 for (ptr = 0; ptr < pc; ptr++)
1115                 {
1116                         charlcat(outl,' ',MAXBUF);
1117                         strlcat(outl,outpars[ptr],MAXBUF-1);
1118                 }
1119                 if (local)
1120                 {
1121                         log(DEBUG,"Local mode change");
1122                         WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl);
1123                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1124                 }
1125                 else
1126                 {
1127                         if (servermode)
1128                         {
1129                                 if (!silent)
1130                                 {
1131                                         WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl);
1132                                 }
1133
1134                         }
1135                         else
1136                         {
1137                                 if (!silent)
1138                                 {
1139                                         WriteChannel(chan,user,"MODE %s %s",chan->name,outl);
1140                                         FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl));
1141                                 }
1142                         }
1143                 }
1144         }
1145 }
1146
1147 // based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others.
1148
1149 bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride)
1150 {
1151         log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes);
1152         // Servers can +o and -o arbitrarily
1153         if ((serveroverride == true) && (umode == 'o'))
1154         {
1155                 return true;
1156         }
1157         // RFC1459 specified modes
1158         if ((umode == 'w') || (umode == 's') || (umode == 'i'))
1159         {
1160                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1161                 return true;
1162         }
1163
1164         // user may not +o themselves or others, but an oper may de-oper other opers or themselves
1165         if ((strchr(sourcemodes,'o')) && (!adding))
1166         {
1167                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1168                 return true;
1169         }
1170         else if (umode == 'o')
1171         {
1172                 log(DEBUG,"umode %c allowed by RFC1459 scemantics",umode);
1173                 return false;
1174         }
1175
1176         // process any module-defined modes that need oper
1177         if ((ModeDefinedOper(umode,MT_CLIENT)) && (strchr(sourcemodes,'o')))
1178         {
1179                 log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode);
1180                 return true;
1181         }
1182         else
1183         if (ModeDefined(umode,MT_CLIENT))
1184         {
1185                 // process any module-defined modes that don't need oper
1186                 log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode);
1187                 if ((ModeDefinedOper(umode,MT_CLIENT)) && (!strchr(sourcemodes,'o')))
1188                 {
1189                         // no, this mode needs oper, and this user 'aint got what it takes!
1190                         return false;
1191                 }
1192                 return true;
1193         }
1194
1195         // anything else - return false.
1196         log(DEBUG,"umode %c not known by any ruleset",umode);
1197         return false;
1198 }
1199
1200 bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding)
1201 {
1202         userrec* s2;
1203         bool faked = false;
1204         if (!source)
1205         {
1206                 s2 = new userrec;
1207                 strlcpy(s2->nick,Config->ServerName,NICKMAX-1);
1208                 *s2->modes = 'o';
1209                 *(s2->modes+1) = 0;
1210                 s2->fd = -1;
1211                 source = s2;
1212                 faked = true;
1213         }
1214         string_list p;
1215         p.clear();
1216         if (ModeDefined(umode,MT_CLIENT))
1217         {
1218                 for (int i = 0; i <= MODCOUNT; i++)
1219                 {
1220                         if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p))
1221                         {
1222                                 log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode);
1223                                 return true;
1224                         }
1225                 }
1226                 log(DEBUG,"No module claims umode %c",umode);
1227                 if (faked)
1228                 {
1229                         delete s2;
1230                         source = NULL;
1231                 }
1232                 return false;
1233         }
1234         else
1235         {
1236                 if (faked)
1237                 {
1238                         delete s2;
1239                         source = NULL;
1240                 }
1241                 return false;
1242         }
1243 }
1244
1245 void cmd_mode::Handle (char **parameters, int pcnt, userrec *user)
1246 {
1247         chanrec* Ptr;
1248         userrec* dest;
1249         int can_change;
1250         int direction = 1;
1251         char outpars[MAXBUF];
1252         bool next_ok = true;
1253
1254         dest = Find(parameters[0]);
1255
1256         if (!user)
1257         {
1258                 return;
1259         }
1260
1261         if ((dest) && (pcnt == 1))
1262         {
1263                 WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes);
1264                 return;
1265         }
1266
1267         if ((dest) && (pcnt > 1))
1268         {
1269                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1270                 parameters[1] = (char*)tidied.c_str();
1271
1272                 char dmodes[MAXBUF];
1273                 strlcpy(dmodes,dest->modes,MAXMODES);
1274                 log(DEBUG,"pulled up dest user modes: %s",dmodes);
1275
1276                 can_change = 0;
1277                 if (user != dest)
1278                 {
1279                         if ((strchr(user->modes,'o')) || (is_uline(user->server)))
1280                         {
1281                                 can_change = 1;
1282                         }
1283                 }
1284                 else
1285                 {
1286                         can_change = 1;
1287                 }
1288                 if (!can_change)
1289                 {
1290                         WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick);
1291                         return;
1292                 }
1293
1294                 outpars[0] = *parameters[1];
1295                 outpars[1] = 0;
1296                 direction = (*parameters[1] == '+');
1297
1298                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1299                         return;
1300
1301                 for (char* i = parameters[1]; *i; i++)
1302                 {
1303                         if (*i == ' ')
1304                                 continue;
1305
1306                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1307                                 next_ok = true;
1308
1309                         if (*i == '+')
1310                         {
1311                                 if ((direction != 1) && (next_ok))
1312                                 {
1313                                         charlcat(outpars,'+',MAXBUF);
1314                                         next_ok = false;
1315                                 }
1316                                 direction = 1;
1317                         }
1318                         else
1319                         if (*i == '-')
1320                         {
1321                                 if ((direction != 0) && (next_ok))
1322                                 {
1323                                         charlcat(outpars,'-',MAXBUF);
1324                                         next_ok = false;
1325                                 }
1326                                 direction = 0;
1327                         }
1328                         else
1329                         {
1330                                 can_change = 0;
1331                                 if (strchr(user->modes,'o'))
1332                                 {
1333                                         can_change = 1;
1334                                 }
1335                                 else
1336                                 {
1337                                         if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false)))
1338                                         {
1339                                                 can_change = 1;
1340                                         }
1341                                 }
1342                                 if (can_change)
1343                                 {
1344                                         if (direction == 1)
1345                                         {
1346                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false)))
1347                                                 {
1348                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1349                                                         {
1350                                                                 charlcat(dmodes,*i,MAXMODES);
1351                                                                 charlcat(outpars,*i,MAXMODES);
1352                                                                 if (*i == 'o')
1353                                                                 {
1354                                                                         FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest));
1355                                                                 }
1356                                                         }
1357                                                 }
1358                                         }
1359                                         else
1360                                         {
1361                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i)))
1362                                                 {
1363                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1364                                                         {
1365                                                                 charlcat(outpars,*i,MAXMODES);
1366                                                                 charremove(dmodes,*i);
1367                                                                 if (*i == 'o')
1368                                                                 {
1369                                                                         *dest->oper = 0;
1370                                                                         DeleteOper(dest);
1371                                                                 }
1372                                                         }
1373                                                 }
1374                                         }
1375                                 }
1376                         }
1377                 }
1378                 if (*outpars)
1379                 {
1380                         char b[MAXBUF];
1381                         char* z = b;
1382
1383                         for (char* i = outpars; *i;)
1384                         {
1385                                 *z++ = *i++;
1386                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1387                                 {
1388                                         // someones playing silly buggers and trying
1389                                         // to put a +- or -+ into the line...
1390                                         i++;
1391                                 }
1392                                 if (!*(i+1))
1393                                 {
1394                                         // Someone's trying to make the last character in
1395                                         // the line be a + or - symbol.
1396                                         if ((*i == '-') || (*i == '+'))
1397                                         {
1398                                                 i++;
1399                                         }
1400                                 }
1401                         }
1402                         *z = 0;
1403
1404                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1405                         {
1406                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1407                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1408                         }
1409
1410                         log(DEBUG,"Stripped mode line");
1411                         log(DEBUG,"Line dest is now %s",dmodes);
1412                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1413
1414                 }
1415
1416                 return;
1417         }
1418
1419         Ptr = FindChan(parameters[0]);
1420         if (Ptr)
1421         {
1422                 if (pcnt == 1)
1423                 {
1424                         /* just /modes #channel */
1425                         WriteServ(user->fd,"324 %s %s +%s",user->nick, Ptr->name, chanmodes(Ptr,has_channel(user,Ptr)));
1426                         WriteServ(user->fd,"329 %s %s %d", user->nick, Ptr->name, Ptr->created);
1427                         return;
1428                 }
1429                 else
1430                 if (pcnt == 2)
1431                 {
1432                         char* mode = parameters[1];
1433                         if (*mode == '+')
1434                                 mode++;
1435                         int MOD_RESULT = 0;
1436                         FOREACH_RESULT(I_OnRawMode,OnRawMode(user, Ptr, *mode, "", false, 0));
1437                         if (!MOD_RESULT)
1438                         {
1439                                 if (*mode == 'b')
1440                                 {
1441
1442                                         for (BanList::iterator i = Ptr->bans.begin(); i != Ptr->bans.end(); i++)
1443                                         {
1444                                                 WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, Ptr->name, i->data, i->set_by, i->set_time);
1445                                         }
1446                                         WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, Ptr->name);
1447                                         return;
1448                                 }
1449                                 if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL)))
1450                                 {
1451                                         // list of items for an extmode
1452                                         log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode);
1453                                         FOREACH_MOD(I_OnSendList,OnSendList(user,Ptr,*mode));
1454                                         return;
1455                                 }
1456                         }
1457                 }
1458
1459                 if (((Ptr) && (!has_channel(user,Ptr))) && (!is_uline(user->server)) && (IS_LOCAL(user)))
1460                 {
1461                         WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, Ptr->name);
1462                         return;
1463                 }
1464
1465                 if (Ptr)
1466                 {
1467                         int MOD_RESULT = 0;
1468                         FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,Ptr,AC_GENERAL_MODE));
1469
1470                         if (MOD_RESULT == ACR_DENY)
1471                                 return;
1472                         if (MOD_RESULT == ACR_DEFAULT)
1473                         {
1474                                 if ((cstatus(user,Ptr) < STATUS_HOP) && (IS_LOCAL(user)))
1475                                 {
1476                                         WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, Ptr->name);
1477                                         return;
1478                                 }
1479                         }
1480
1481                         ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,cstatus(user,Ptr),pcnt,false,false,false);
1482                 }
1483         }
1484         else
1485         {
1486                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1487         }
1488 }
1489
1490
1491
1492
1493 void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user)
1494 {
1495         chanrec* Ptr;
1496         userrec* dest;
1497         int can_change;
1498         int direction = 1;
1499         char outpars[MAXBUF];
1500         bool next_ok = true;
1501
1502         dest = Find(parameters[0]);
1503
1504         // fix: ChroNiCk found this - we cant use this as debug if its null!
1505         if (dest)
1506         {
1507                 log(DEBUG,"server_mode on %s",dest->nick);
1508         }
1509
1510         if ((dest) && (pcnt > 1))
1511         {
1512                 std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false);
1513                 parameters[1] = (char*)tidied.c_str();
1514
1515                 char dmodes[MAXBUF];
1516                 strlcpy(dmodes,dest->modes,MAXBUF);
1517
1518                 outpars[0] = *parameters[1];
1519                 outpars[1] = 0;
1520                 direction = (*parameters[1] == '+');
1521
1522                 if ((*parameters[1] != '+') && (*parameters[1] != '-'))
1523                         return;
1524
1525                 for (char* i = parameters[1]; *i; i++)
1526                 {
1527                         if (*i == ' ')
1528                                 continue;
1529
1530                         if ((i != parameters[1]) && (*i != '+') && (*i != '-'))
1531                                 next_ok = true;
1532
1533                         if (*i == '+')
1534                         {
1535                                 if ((direction != 1) && (next_ok))
1536                                 {
1537                                         next_ok = false;
1538                                         charlcat(outpars,'+',MAXBUF);
1539                                 }
1540                                 direction = 1;
1541                         }
1542                         else
1543                         if (*i == '-')
1544                         {
1545                                 if ((direction != 0) && (next_ok))
1546                                 {
1547                                         next_ok = false;
1548                                         charlcat(outpars,'-',MAXBUF);
1549                                 }
1550                                 direction = 0;
1551                         }
1552                         else
1553                         {
1554                                 log(DEBUG,"begin mode processing entry");
1555                                 can_change = 1;
1556                                 if (can_change)
1557                                 {
1558                                         if (direction == 1)
1559                                         {
1560                                                 log(DEBUG,"umode %c being added",*i);
1561                                                 if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true)))
1562                                                 {
1563                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1564                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1565                                                         {
1566                                                                 charlcat(dmodes,*i,MAXMODES);
1567                                                                 charlcat(outpars,*i,MAXMODES);
1568                                                         }
1569                                                 }
1570                                         }
1571                                         else
1572                                         {
1573                                                 // can only remove a mode they already have
1574                                                 log(DEBUG,"umode %c being removed",*i);
1575                                                 if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i)))
1576                                                 {
1577                                                         log(DEBUG,"umode %c is an allowed umode",*i);
1578                                                         if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o'))
1579                                                         {
1580                                                                 charlcat(outpars,*i,MAXMODES);
1581                                                                 charremove(dmodes,*i);
1582                                                         }
1583                                                 }
1584                                         }
1585                                 }
1586                         }
1587                 }
1588                 if (*outpars)
1589                 {
1590                         char b[MAXBUF];
1591                         char* z = b;
1592
1593                         for (char* i = outpars; *i;)
1594                         {
1595                                 *z++ = *i++;
1596                                 if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+')))
1597                                 {
1598                                         // someones playing silly buggers and trying
1599                                         // to put a +- or -+ into the line...
1600                                         i++;
1601                                 }
1602                                 if (!*(i+1))
1603                                 {
1604                                         // Someone's trying to make the last character in
1605                                         // the line be a + or - symbol.
1606                                         if ((*i == '-') || (*i == '+'))
1607                                         {
1608                                                 i++;
1609                                         }
1610                                 }
1611                         }
1612                         *z = 0;
1613
1614                         if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-')))
1615                         {
1616                                 WriteTo(user, dest, "MODE %s :%s", dest->nick, b);
1617                                 FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b));
1618                         }
1619
1620                         log(DEBUG,"Stripped mode line");
1621                         log(DEBUG,"Line dest is now %s",dmodes);
1622                         strlcpy(dest->modes,dmodes,MAXMODES-1);
1623
1624                 }
1625
1626                 return;
1627         }
1628
1629         Ptr = FindChan(parameters[0]);
1630         if (Ptr)
1631         {
1632                 ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false);
1633         }
1634         else
1635         {
1636                 WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]);
1637         }
1638 }