X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fmode.cpp;h=d5ee5acdd23776778b5c365a8adc646ed50f54a4;hb=3593e33ce374caee9aec0575b49ec9b0001a8ec6;hp=fa3ccd88d1ced5bf59cf5cd174dfbb1f6dea541e;hpb=988568f3d1cc2247fa3adbadd8daa0ee175fcb1d;p=user%2Fhenk%2Fcode%2Finspircd.git diff --git a/src/mode.cpp b/src/mode.cpp index fa3ccd88d..3406393cf 100644 --- a/src/mode.cpp +++ b/src/mode.cpp @@ -2,1588 +2,1065 @@ * | Inspire Internet Relay Chat Daemon | * +------------------------------------+ * - * InspIRCd is copyright (C) 2002-2006 ChatSpike-Dev. - * E-mail: - * - * - * - * Written by Craig Edwards, Craig McLure, and others. + * InspIRCd: (C) 2002-2007 InspIRCd Development Team + * See: http://www.inspircd.org/wiki/index.php/Credits + * * This program is free but copyrighted software; see * the file COPYING for details. * * --------------------------------------------------- */ -using namespace std; +/* $Core: libIRCDmode */ +/* $ExtraDeps: $(RELCPPFILES) */ +/* $ExtraObjects: modes/modeclasses.a */ +/* $ExtraBuild: ${MAKE} -C "modes" DIRNAME="src/modes" CC="$(CC)" $(MAKEARGS) CPPFILES="$(CPPFILES)" */ -#include "inspircd_config.h" #include "inspircd.h" -#include "inspircd_io.h" -#include -#include -#include -#include -#ifdef GCC3 -#include -#else -#include -#endif -#include -#include -#include -#include -#include "connection.h" -#include "users.h" -#include "ctables.h" -#include "globals.h" -#include "modules.h" -#include "dynamic.h" -#include "wildcard.h" -#include "message.h" -#include "commands.h" -#include "xline.h" #include "inspstring.h" -#include "helperfuncs.h" -#include "mode.h" -extern int MODCOUNT; -extern std::vector modules; -extern std::vector factory; -extern InspIRCd* ServerInstance; -extern ServerConfig* Config; +/* +s (secret) */ +#include "modes/cmode_s.h" +/* +p (private) */ +#include "modes/cmode_p.h" +/* +b (bans) */ +#include "modes/cmode_b.h" +/* +m (moderated) */ +#include "modes/cmode_m.h" +/* +t (only (half) ops can change topic) */ +#include "modes/cmode_t.h" +/* +n (no external messages) */ +#include "modes/cmode_n.h" +/* +i (invite only) */ +#include "modes/cmode_i.h" +/* +k (keyed channel) */ +#include "modes/cmode_k.h" +/* +l (channel user limit) */ +#include "modes/cmode_l.h" +/* +o (channel op) */ +#include "modes/cmode_o.h" +/* +h (channel halfop) */ +#include "modes/cmode_h.h" +/* +v (channel voice) */ +#include "modes/cmode_v.h" +/* +s (server notices) */ +#include "modes/umode_s.h" +/* +w (see wallops) */ +#include "modes/umode_w.h" +/* +i (invisible) */ +#include "modes/umode_i.h" +/* +o (operator) */ +#include "modes/umode_o.h" +/* +n (notice mask - our implementation of snomasks) */ +#include "modes/umode_n.h" + +ModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly, char mprefix) + : ServerInstance(Instance), mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), oper(operonly), prefix(mprefix), count(0) +{ +} -extern time_t TIME; +ModeHandler::~ModeHandler() +{ +} -userrec* ModeParser::SanityChecks(userrec *user,char *dest,chanrec *chan,int status) +bool ModeHandler::IsListMode() { - userrec *d; - if ((!user) || (!dest) || (!chan) || (!*dest)) - { - return NULL; - } - d = Find(dest); - if (!d) - { - WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, dest); - return NULL; - } - return d; + return list; } -char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK) +unsigned int ModeHandler::GetPrefixRank() { - if (!chan) - return NULL; + return 0; +} - for (std::vector::const_iterator i = d->chans.begin(); i != d->chans.end(); i++) - { - if (((ucrec*)(*i))->channel == chan) - { - if (((ucrec*)(*i))->uc_modes & MASK) - { - return NULL; - } - ((ucrec*)(*i))->uc_modes = ((ucrec*)(*i))->uc_modes | MASK; - switch (MASK) - { - case UCMODE_OP: - ((ucrec*)(*i))->channel->AddOppedUser(d); - break; - case UCMODE_HOP: - ((ucrec*)(*i))->channel->AddHalfoppedUser(d); - break; - case UCMODE_VOICE: - ((ucrec*)(*i))->channel->AddVoicedUser(d); - break; - } - log(DEBUG,"grant: %s %s",((ucrec*)(*i))->channel->name,d->nick); - return d->nick; - } - } - return NULL; +unsigned int ModeHandler::GetCount() +{ + return 0; } -char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK) +void ModeHandler::ChangeCount(int modifier) { - if (!chan) - return NULL; + count += modifier; + ServerInstance->Log(DEBUG,"Change count for mode %c is now %d", mode, count); +} - for (std::vector::const_iterator i = d->chans.begin(); i != d->chans.end(); i++) - { - if (((ucrec*)(*i))->channel == chan) - { - if ((((ucrec*)(*i))->uc_modes & MASK) == 0) - { - return NULL; - } - ((ucrec*)(*i))->uc_modes ^= MASK; - switch (MASK) - { - case UCMODE_OP: - ((ucrec*)(*i))->channel->DelOppedUser(d); - break; - case UCMODE_HOP: - ((ucrec*)(*i))->channel->DelHalfoppedUser(d); - break; - case UCMODE_VOICE: - ((ucrec*)(*i))->channel->DelVoicedUser(d); - break; - } - log(DEBUG,"revoke: %s %s",((ucrec*)(*i))->channel->name,d->nick); - return d->nick; - } - } - return NULL; +ModeType ModeHandler::GetModeType() +{ + return m_type; } -char* ModeParser::GiveOps(userrec *user,char *dest,chanrec *chan,int status) +bool ModeHandler::NeedsOper() { - userrec *d = this->SanityChecks(user,dest,chan,status); - - if (d) - { - if (IS_LOCAL(user)) - { - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_OP)); - - if (MOD_RESULT == ACR_DENY) - return NULL; - if (MOD_RESULT == ACR_DEFAULT) - { - if ((status < STATUS_OP) && (!is_uline(user->server))) - { - WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name); - return NULL; - } - } - } + return oper; +} - return this->Grant(d,chan,UCMODE_OP); - } - return NULL; +char ModeHandler::GetPrefix() +{ + return prefix; } -char* ModeParser::GiveHops(userrec *user,char *dest,chanrec *chan,int status) +int ModeHandler::GetNumParams(bool adding) { - userrec *d = this->SanityChecks(user,dest,chan,status); - - if (d) - { - if (IS_LOCAL(user)) - { - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_HALFOP)); - - if (MOD_RESULT == ACR_DENY) - return NULL; - if (MOD_RESULT == ACR_DEFAULT) - { - if ((status < STATUS_OP) && (!is_uline(user->server))) - { - WriteServ(user->fd,"482 %s %s :You're not a channel operator",user->nick, chan->name); - return NULL; - } - } - } + return adding ? n_params_on : n_params_off; +} - return this->Grant(d,chan,UCMODE_HOP); - } - return NULL; +char ModeHandler::GetModeChar() +{ + return mode; } -char* ModeParser::GiveVoice(userrec *user,char *dest,chanrec *chan,int status) +ModeAction ModeHandler::OnModeChange(User*, User*, Channel*, std::string&, bool) { - userrec *d = this->SanityChecks(user,dest,chan,status); - - if (d) - { - if (IS_LOCAL(user)) - { - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_VOICE)); - - if (MOD_RESULT == ACR_DENY) - return NULL; - if (MOD_RESULT == ACR_DEFAULT) - { - if ((status < STATUS_HOP) && (!is_uline(user->server))) - { - WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name); - return NULL; - } - } - } + return MODEACTION_DENY; +} - return this->Grant(d,chan,UCMODE_VOICE); +ModePair ModeHandler::ModeSet(User*, User* dest, Channel* channel, const std::string&) +{ + if (dest) + { + return std::make_pair(dest->IsModeSet(this->mode), ""); + } + else + { + return std::make_pair(channel->IsModeSet(this->mode), ""); } - return NULL; } -char* ModeParser::TakeOps(userrec *user,char *dest,chanrec *chan,int status) +void ModeHandler::DisplayList(User*, Channel*) { - userrec *d = this->SanityChecks(user,dest,chan,status); - - if (d) - { - if (IS_LOCAL(user)) - { - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEOP)); - - if (MOD_RESULT == ACR_DENY) - return NULL; - if (MOD_RESULT == ACR_DEFAULT) - { - if ((status < STATUS_OP) && (!is_uline(user->server)) && (IS_LOCAL(user))) - { - WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name); - return NULL; - } - } - } +} - return this->Revoke(d,chan,UCMODE_OP); - } - return NULL; +void ModeHandler::DisplayEmptyList(User*, Channel*) +{ } -char* ModeParser::TakeHops(userrec *user,char *dest,chanrec *chan,int status) +bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string&, const std::string&, Channel*) { - userrec *d = this->SanityChecks(user,dest,chan,status); - - if (d) - { - if (IS_LOCAL(user)) - { - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEHALFOP)); - - if (MOD_RESULT == ACR_DENY) - return NULL; - if (MOD_RESULT == ACR_DEFAULT) - { - /* Tweak by Brain suggested by w00t, allow a halfop to dehalfop themselves */ - if ((user != d) && ((status < STATUS_OP) && (!is_uline(user->server)))) - { - WriteServ(user->fd,"482 %s %s :You are not a channel operator",user->nick, chan->name); - return NULL; - } - } - } + return (ours < theirs); +} - return this->Revoke(d,chan,UCMODE_HOP); - } - return NULL; +ModeWatcher::ModeWatcher(InspIRCd* Instance, char modeletter, ModeType type) : ServerInstance(Instance), mode(modeletter), m_type(type) +{ } -char* ModeParser::TakeVoice(userrec *user,char *dest,chanrec *chan,int status) +ModeWatcher::~ModeWatcher() { - userrec *d = this->SanityChecks(user,dest,chan,status); +} - if (d) - { - if (IS_LOCAL(user)) - { - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,d,chan,AC_DEVOICE)); - - if (MOD_RESULT == ACR_DENY) - return NULL; - if (MOD_RESULT == ACR_DEFAULT) - { - if ((status < STATUS_HOP) && (!is_uline(user->server))) - { - WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name); - return NULL; - } - } - } +char ModeWatcher::GetModeChar() +{ + return mode; +} - return this->Revoke(d,chan,UCMODE_VOICE); - } - return NULL; +ModeType ModeWatcher::GetModeType() +{ + return m_type; +} + +bool ModeWatcher::BeforeMode(User*, User*, Channel*, std::string&, bool, ModeType) +{ + return true; } -char* ModeParser::AddBan(userrec *user,char *dest,chanrec *chan,int status) +void ModeWatcher::AfterMode(User*, User*, Channel*, const std::string&, bool, ModeType) { - BanItem b; - int toomanyexclamation = 0; - int toomanyat = 0; +} +User* ModeParser::SanityChecks(User *user, const char *dest, Channel *chan, int) +{ + User *d; if ((!user) || (!dest) || (!chan) || (!*dest)) { - log(DEFAULT,"*** BUG *** AddBan was given an invalid parameter"); return NULL; } - - for (char* i = dest; *i; i++) - { - if ((*i < 32) || (*i > 126)) - { - return NULL; - } - else if (*i == '!') - { - toomanyexclamation++; - } - else if (*i == '@') - { - toomanyat++; - } - } - - if (toomanyexclamation != 1 || toomanyat != 1) - /* - * this stops sillyness like n!u!u!u@h, though note that most - * ircds don't actually verify banmask validity. --w00t - */ - return NULL; - - long maxbans = GetMaxBans(chan->name); - if ((unsigned)chan->bans.size() > (unsigned)maxbans) + d = ServerInstance->FindNick(dest); + if (!d) { - 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); + user->WriteServ("401 %s %s :No such nick/channel",user->nick, dest); return NULL; } + return d; +} - log(DEBUG,"AddBan: %s %s",chan->name,user->nick); - - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnAddBan,OnAddBan(user,chan,dest)); - if (MOD_RESULT) - return NULL; +const char* ModeParser::Grant(User *d,Channel *chan,int MASK) +{ + if (!chan) + return ""; - TidyBan(dest); - for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++) + UCListIter n = d->chans.find(chan); + if (n != d->chans.end()) { - if (!strcasecmp(i->data,dest)) + if (n->second & MASK) { - // dont allow a user to set the same ban twice - return NULL; + return ""; } + n->second = n->second | MASK; + switch (MASK) + { + case UCMODE_OP: + n->first->AddOppedUser(d); + break; + case UCMODE_HOP: + n->first->AddHalfoppedUser(d); + break; + case UCMODE_VOICE: + n->first->AddVoicedUser(d); + break; + } + return d->nick; } - - b.set_time = TIME; - strlcpy(b.data,dest,MAXBUF); - if (*user->nick) - { - strlcpy(b.set_by,user->nick,NICKMAX-1); - } - else - { - strlcpy(b.set_by,Config->ServerName,NICKMAX-1); - } - chan->bans.push_back(b); - return dest; + return ""; } -char* ModeParser::TakeBan(userrec *user,char *dest,chanrec *chan,int status) +const char* ModeParser::Revoke(User *d,Channel *chan,int MASK) { - if ((!user) || (!dest) || (!chan) || (!*dest)) { - log(DEFAULT,"*** BUG *** TakeBan was given an invalid parameter"); - return 0; - } + if (!chan) + return ""; - log(DEBUG,"del_ban: %s %s",chan->name,user->nick); - for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++) + UCListIter n = d->chans.find(chan); + if (n != d->chans.end()) { - if (!strcasecmp(i->data,dest)) + if ((n->second & MASK) == 0) + { + return ""; + } + n->second ^= MASK; + switch (MASK) { - int MOD_RESULT = 0; - FOREACH_RESULT(I_OnDelBan,OnDelBan(user,chan,dest)); - if (MOD_RESULT) - return NULL; - chan->bans.erase(i); - return dest; + case UCMODE_OP: + n->first->DelOppedUser(d); + break; + case UCMODE_HOP: + n->first->DelHalfoppedUser(d); + break; + case UCMODE_VOICE: + n->first->DelVoicedUser(d); + break; } + return d->nick; } - return NULL; + return ""; } - -/** ModeParser::CompressModes() - * Tidies up redundant modes, - * e.g. +nt-nt+i becomes +-+i - * A section further down the chain tidies up the +-+- crap. - */ -std::string ModeParser::CompressModes(std::string modes,bool channelmodes) +void ModeParser::DisplayCurrentModes(User *user, User* targetuser, Channel* targetchannel, const char* text) { - /* - * OK, iterate over the mode string and count how many times a certain mode appears in it. - * Then, erase all instances of any character that appears more than once. - * This only operates on modes with no parameters, you can still +v-v+v-v+v-v to your heart's content. - */ - - /* Do we really need an int here? Can you fit enough modes in a line to overflow a short? */ - short counts[127]; - bool active[127]; - memset(counts, 0, sizeof(counts)); - memset(active, 0, sizeof(active)); - - for(unsigned char* i = (unsigned char*)modes.c_str(); *i; i++) + if (targetchannel) { - if((*i == '+') || (*i == '-')) - continue; - - if(!channelmodes || (channelmodes && (strchr("itnmsp", *i) || (ModeDefined(*i, MT_CHANNEL) && !ModeDefinedOn(*i,MT_CHANNEL) && !ModeDefinedOff(*i,MT_CHANNEL))))) - { - log(DEBUG,"Tidy mode %c", *i); - counts[*i]++; - active[*i] = true; - } + /* Display channel's current mode string */ + user->WriteServ("324 %s %s +%s",user->nick, targetchannel->name, targetchannel->ChanModes(targetchannel->HasUser(user))); + user->WriteServ("329 %s %s %lu", user->nick, targetchannel->name, (unsigned long)targetchannel->age); + return; } - - for(unsigned char j = 65; j < 127; j++) + else if (targetuser) { - if ((counts[j] > 1) && (active[j] == true)) + if (targetuser->Visibility && !targetuser->Visibility->VisibleTo(user)) { - std::string::size_type pos; + user->WriteServ("401 %s %s :No such nick/channel",user->nick, text); + return; + } - while((pos = modes.find(j)) != std::string::npos) - { - log(DEBUG, "Deleting occurence of mode %c...", j); - modes.erase(pos, 1); - log(DEBUG,"New mode line: %s", modes.c_str()); - } + if ((targetuser == user) || (IS_OPER(user))) + { + /* Display user's current mode string */ + user->WriteServ("221 %s :+%s",targetuser->nick,targetuser->FormatModes()); + if (IS_OPER(targetuser)) + user->WriteServ("008 %s +%s :Server notice mask", targetuser->nick, targetuser->FormatNoticeMasks()); + return; + } + else + { + user->WriteServ("502 %s :Can't change mode for other users", user->nick); + return; } } - - return modes; + + /* No such nick/channel */ + user->WriteServ("401 %s %s :No such nick/channel",user->nick, text); + return; } -void ModeParser::ProcessModes(char **parameters,userrec* user,chanrec *chan,int status, int pcnt, bool servermode, bool silent, bool local) +void ModeParser::Process(const char** parameters, int pcnt, User *user, bool servermode) { - if ((!parameters) || (pcnt < 2)) { - return; - } + std::string target = parameters[0]; + ModeType type = MODETYPE_USER; + unsigned char mask = 0; + Channel* targetchannel = ServerInstance->FindChan(parameters[0]); + User* targetuser = ServerInstance->FindNick(parameters[0]); - char outlist[MAXBUF]; - char mlist[MAXBUF]; - char *outpars[32]; - int param = 2; - int pc = 0; - int ptr = 0; - int mdir = 1; - char* r = NULL; - bool k_set = false, l_set = false, previously_set_l = false, previously_unset_l = false, previously_set_k = false, previously_unset_k = false; - - int MOD_RESULT = 0; - - if (IS_LOCAL(user)) + LastParse.clear(); + + /* Special case for displaying the list for listmodes, + * e.g. MODE #chan b, or MODE #chan +b without a parameter + */ + if ((targetchannel) && (pcnt == 2)) { - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user,NULL,chan,AC_GENERAL_MODE)); - if (MOD_RESULT == ACR_DENY) - return; - } + const char* mode = parameters[1]; + int nonlistmodes_found = 0; + bool sent[256]; + + mask = MASK_CHANNEL; + + memset(&sent, 0, 256); + + while (mode && *mode) + { + unsigned char mletter = *mode; + + if (*mode == '+') + { + mode++; + continue; + } - std::string tidied = this->CompressModes(parameters[1],true); - strlcpy(mlist,tidied.c_str(),MAXBUF); - char* modelist = mlist; + /* Ensure the user doesnt request the same mode twice, + * so they cant flood themselves off out of idiocy. + */ + if (!sent[mletter]) + { + sent[mletter] = true; + } + else + { + mode++; + continue; + } - *outlist = *modelist; - char* outl = outlist+1; + ModeHandler *mh = this->FindMode(*mode, MODETYPE_CHANNEL); + bool display = true; - mdir = (*modelist == '+'); + if ((mh) && (mh->IsListMode())) + { + if (ServerInstance->Config->HideModeLists[mletter] && (targetchannel->GetStatus(user) < STATUS_HOP)) + { + user->WriteServ("482 %s %s :Only half-operators and above may view the +%c list",user->nick, targetchannel->name, *mode++); + mh->DisplayEmptyList(user, targetchannel); + continue; + } - log(DEBUG,"process_modes: modelist: %s",modelist); + /** See below for a description of what craq this is :D + */ + unsigned char handler_id = (*mode - 65) | mask; - int len = tidied.length(); - while (modelist[len-1] == ' ') - modelist[--len] = '\0'; + for(ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++) + { + std::string dummyparam; + + if (!((*watchers)->BeforeMode(user, NULL, targetchannel, dummyparam, true, MODETYPE_CHANNEL))) + display = false; + } - for (char* modechar = (modelist + 1); *modechar; ptr++, modechar++) - { - r = NULL; + if (display) + mh->DisplayList(user, targetchannel); + } + else + nonlistmodes_found++; - /* If we have more than MAXMODES changes in one line, - * drop all after the MAXMODES - */ - if (pc > MAXMODES-1) - break; + mode++; + } + /* We didnt have any modes that were non-list, we can return here */ + if (!nonlistmodes_found) + return; + } - - switch (*modechar) + if (pcnt == 1) + { + this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]); + } + else if (pcnt > 1) + { + if (targetchannel) { - case '-': - *outl++ = '-'; - mdir = 0; - break; - - case '+': - *outl++ = '+'; - mdir = 1; - break; + type = MODETYPE_CHANNEL; + mask = MASK_CHANNEL; - case 'o': - log(DEBUG,"Ops"); - if ((param >= pcnt)) break; - log(DEBUG,"Enough parameters left"); - r = NULL; - if (mdir == 1) - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], true, 1)); - if (!MOD_RESULT) - { - r = GiveOps(user,parameters[param++],chan,status); - } - else param++; - } - else - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'o', parameters[param], false, 1)); - if (!MOD_RESULT) - { - r = TakeOps(user,parameters[param++],chan,status); - } - else param++; - } - if (r) - { - *outl++ = 'o'; - outpars[pc++] = r; - } - break; - - case 'h': - if (((param >= pcnt)) || (!Config->AllowHalfop)) break; - r = NULL; - if (mdir == 1) - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], true, 1)); - if (!MOD_RESULT) - { - r = GiveHops(user,parameters[param++],chan,status); - } - else param++; - } - else - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'h', parameters[param], false, 1)); - if (!MOD_RESULT) - { - r = TakeHops(user,parameters[param++],chan,status); - } - else param++; - } - if (r) + /* Extra security checks on channel modes + * (e.g. are they a (half)op? + */ + + if ((IS_LOCAL(user)) && (targetchannel->GetStatus(user) < STATUS_HOP)) + { + /* We don't have halfop */ + int MOD_RESULT = 0; + FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, targetchannel, AC_GENERAL_MODE)); + if (MOD_RESULT == ACR_DENY) + return; + + if (MOD_RESULT == ACR_DEFAULT) { - *outl++ = 'h'; - outpars[pc++] = r; - } - break; - - - case 'v': - if ((param >= pcnt)) break; - r = NULL; - if (mdir == 1) - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], true, 1)); - if (!MOD_RESULT) - { - r = GiveVoice(user,parameters[param++],chan,status); - } - else param++; - } - else - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'v', parameters[param], false, 1)); - if (!MOD_RESULT) - { - r = TakeVoice(user,parameters[param++],chan,status); - } - else param++; - } - if (r) + /* Are we a uline or is it a servermode? */ + if ((!ServerInstance->ULine(user->server)) && (!servermode)) { - *outl++ = 'v'; - outpars[pc++] = r; - } - break; - - case 'b': - if ((param >= pcnt)) break; - r = NULL; - if (mdir == 1) - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], true, 1)); - if (!MOD_RESULT) - { - r = AddBan(user,parameters[param++],chan,status); + /* Not enough permission: + * NOT a uline and NOT a servermode, + * OR, NOT halfop or above. + */ + user->WriteServ("482 %s %s :You're not a channel %soperator",user->nick, targetchannel->name, + ServerInstance->Config->AllowHalfop ? "(half)" : ""); + return; } - else param++; } - else - { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'b', parameters[param], false, 1)); - if (!MOD_RESULT) - { - r = TakeBan(user,parameters[param++],chan,status); - } - else param++; - } - if (r) - { - *outl++ = 'b'; - outpars[pc++] = parameters[param-1]; - } - break; + } + } + else if (targetuser) + { + type = MODETYPE_USER; + mask = MASK_USER; + if ((user != targetuser) && (!ServerInstance->ULine(user->server))) + { + user->WriteServ("502 %s :Can't change mode for other users", user->nick); + return; + } + } + else + { + /* No such nick/channel */ + user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[0]); + return; + } + std::string mode_sequence = parameters[1]; + std::string parameter; + std::ostringstream parameter_list; + std::string output_sequence; + bool adding = true, state_change = false; + unsigned char handler_id = 0; + int parameter_counter = 2; /* Index of first parameter */ + int parameter_count = 0; + bool last_successful_state_change = false; + + /* A mode sequence that doesnt start with + or -. Assume +. - Thanks for the suggestion spike (bug#132) */ + if ((*mode_sequence.begin() != '+') && (*mode_sequence.begin() != '-')) + mode_sequence.insert(0, "+"); + + for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++) + { + unsigned char modechar = *letter; - case 'k': - if ((param >= pcnt)) - break; + switch (modechar) + { + /* NB: + * For + and - mode characters, we don't just stick the character into the output sequence. + * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this + * appearing in the output sequence, we store a flag which says there was a state change, + * which is set on any + or -, however, the + or - that we finish on is only appended to + * the output stream in the event it is followed by a non "+ or -" character, such as o or v. + */ + case '+': + /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick, + * however, will allow the + if it is the first item in the sequence, regardless. + */ + if ((!adding) || (!output_sequence.length())) + state_change = true; + adding = true; + if (!output_sequence.length()) + last_successful_state_change = false; + continue; + break; + case '-': + if ((adding) || (!output_sequence.length())) + state_change = true; + adding = false; + if (!output_sequence.length()) + last_successful_state_change = true; + continue; + break; + default: - if (mdir == 1) - { - if (k_set) - break; - - if (previously_unset_k) - break; - previously_set_k = true; - - if (!chan->custom_modes[CM_KEY]) + /** + * Watch carefully for the sleight of hand trick. + * 65 is the ascii value of 'A'. We take this from + * the char we're looking at to get a number between + * 1 and 127. We then logic-or it to get the hashed + * position, dependent on wether its a channel or + * a user mode. This is a little stranger, but a lot + * faster, than using a map of pairs. + */ + handler_id = (modechar - 65) | mask; + + if (modehandlers[handler_id]) { - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], true, 1)); - if (!MOD_RESULT) - { - *outl++ = 'k'; - char key[MAXBUF]; - strlcpy(key,parameters[param++],32); - outpars[pc++] = key; - strlcpy(chan->key,key,MAXBUF); - chan->custom_modes[CM_KEY] = 1; - k_set = true; - } - else param++; - } - } - else - { - /* checks on -k are case sensitive and only accurate to the - first 32 characters */ - if (previously_set_k) - break; - previously_unset_k = true; - - char key[MAXBUF]; - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'k', parameters[param], false, 1)); - if (!MOD_RESULT) - { - strlcpy(key,parameters[param++],32); - /* only allow -k if correct key given */ - if (!strcmp(chan->key,key)) - { - *outl++ = 'k'; - *chan->key = 0; - chan->custom_modes[CM_KEY] = 0; - outpars[pc++] = key; - } - } - else param++; - } - break; - - case 'l': - if (mdir == 0) - { - if (previously_set_l) - break; - previously_unset_l = true; - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', "", false, 0)); - if (!MOD_RESULT) - { - if (chan->custom_modes[CM_LIMIT]) - { - *outl++ = 'l'; - chan->limit = 0; - chan->custom_modes[CM_LIMIT] = 0; - } - } - } - - if ((param >= pcnt)) break; - if (mdir == 1) - { - if (l_set) - break; - if (previously_unset_l) - break; - previously_set_l = true; - bool invalid = false; - for (char* f = parameters[param]; *f; f++) - { - if ((*f < '0') || (*f > '9')) - { - invalid = true; - } - } - /* If the limit is < 1, or the new limit is the current limit, dont allow */ - if ((atoi(parameters[param]) < 1) || ((chan->limit > 0) && (atoi(parameters[param]) == chan->limit))) - { - invalid = true; - } + bool abort = false; - if (invalid) - break; - - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'l', parameters[param], true, 1)); - if (!MOD_RESULT) - { - - chan->limit = atoi(parameters[param]); - - // reported by mech: large values cause underflow - if (chan->limit < 0) - chan->limit = 0x7FFF; - } - - if (chan->limit) - { - *outl++ = 'l'; - chan->custom_modes[CM_LIMIT] = 1; - outpars[pc++] = parameters[param++]; - l_set = true; - } - } - break; - - case 'i': - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'i', "", mdir, 0)); - if (!MOD_RESULT) - { - if (mdir) - { - if (!(chan->custom_modes[CM_INVITEONLY])) *outl++ = 'i'; - chan->custom_modes[CM_INVITEONLY] = 1; - } - else - { - if (chan->custom_modes[CM_INVITEONLY]) *outl++ = 'i'; - chan->custom_modes[CM_INVITEONLY] = 0; - } - } - break; - - case 't': - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 't', "", mdir, 0)); - if (!MOD_RESULT) - { - if (mdir) - { - if (!(chan->custom_modes[CM_TOPICLOCK])) *outl++ = 't'; - chan->custom_modes[CM_TOPICLOCK] = 1; - } - else - { - if (chan->custom_modes[CM_TOPICLOCK]) *outl++ = 't'; - chan->custom_modes[CM_TOPICLOCK] = 0; - } - } - break; - - case 'n': - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'n', "", mdir, 0)); - if (!MOD_RESULT) - { - if (mdir) - { - if (!(chan->custom_modes[CM_NOEXTERNAL])) *outl++ = 'n'; - chan->custom_modes[CM_NOEXTERNAL] = 1; - } - else - { - if (chan->custom_modes[CM_NOEXTERNAL]) *outl++ = 'n'; - chan->custom_modes[CM_NOEXTERNAL] = 0; - } - } - break; - - case 'm': - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'm', "", mdir, 0)); - if (!MOD_RESULT) - { - if (mdir) - { - if (!(chan->custom_modes[CM_MODERATED])) *outl++ = 'm'; - chan->custom_modes[CM_MODERATED] = 1; - } - else - { - if (chan->custom_modes[CM_MODERATED]) *outl++ = 'm'; - chan->custom_modes[CM_MODERATED] = 0; - } - } - break; - - case 's': - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 's', "", mdir, 0)); - if (!MOD_RESULT) - { - if (mdir) - { - if (!(chan->custom_modes[CM_SECRET])) *outl++ = 's'; - chan->custom_modes[CM_SECRET] = 1; - if (chan->custom_modes[CM_PRIVATE]) - { - chan->custom_modes[CM_PRIVATE] = 0; - if (mdir) - { - *outl++ = '-'; *outl++ = 'p'; *outl++ = '+'; - } - } - } - else - { - if (chan->custom_modes[CM_SECRET]) *outl++ = 's'; - chan->custom_modes[CM_SECRET] = 0; - } - } - break; - - case 'p': - MOD_RESULT = 0; - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, 'p', "", mdir, 0)); - if(!MOD_RESULT) - { - if(mdir) - { - if(!(chan->custom_modes[CM_PRIVATE])) - *outl++ = 'p'; - - chan->custom_modes[CM_PRIVATE] = 1; - - if(chan->custom_modes[CM_SECRET]) - { - chan->custom_modes[CM_SECRET] = 0; - - *outl++ = '-'; - *outl++ = 's'; - *outl++ = '+'; - } - } - else - { - if(chan->custom_modes[CM_PRIVATE]) - *outl++ = 'p'; - - chan->custom_modes[CM_PRIVATE] = 0; - } - } - break; - - default: - string_list p; - p.clear(); - bool x = chan->custom_modes[*modechar-65]; - if ((!x && !mdir) || (x && mdir)) - { - if (!ModeIsListMode(*modechar,MT_CHANNEL)) - { - log(DEBUG,"Mode %c isnt set on %s but trying to remove!",*modechar,chan->name); - break; - } - } - if (ModeDefined(*modechar,MT_CHANNEL)) - { - /* A module has claimed this mode */ - if (param0) && (mdir)) - { - p.push_back(parameters[param]); - } - if ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir)) - { - p.push_back(parameters[param]); - } - } - bool handled = false; - if (param>=pcnt) - { - // we're supposed to have a parameter, but none was given... so dont handle the mode. - if (((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) || ((ModeDefinedOff(*modechar,MT_CHANNEL)>0) && (!mdir))) - { - log(DEBUG,"Not enough parameters for module-mode %c",*modechar); - handled = true; - param++; - } - } - // BIG ASS IDIOTIC CODER WARNING! - // Using OnRawMode on another modules mode's behavour - // will confuse the crap out of admins! just because you CAN - // do it, doesnt mean you SHOULD! - MOD_RESULT = 0; - std::string para = ""; - if (p.size()) - para = p[0]; - - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *modechar, para, mdir, pcnt)); - if(!MOD_RESULT) - { - for (int i = 0; i <= MODCOUNT; i++) + if (modehandlers[handler_id]->GetModeType() == type) { - if (!handled) + if (modehandlers[handler_id]->GetNumParams(adding)) { - int t = modules[i]->OnExtendedMode(user,chan,*modechar,MT_CHANNEL,mdir,p); - if (t != 0) + /* This mode expects a parameter, do we have any parameters left in our list to use? */ + if (parameter_counter < pcnt) + { + parameter = parameters[parameter_counter++]; + + /* Yerk, invalid! */ + if ((parameter.find(':') == 0) || (parameter.rfind(' ') != std::string::npos)) + parameter.clear(); + } + else { - log(DEBUG,"OnExtendedMode returned nonzero for a module"); - if (ModeIsListMode(*modechar,MT_CHANNEL)) + /* No parameter, continue to the next mode */ + continue; + } + + bool had_parameter = !parameter.empty(); + + for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++) + { + if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == false) { - if (t == -1) - { - //pc++; - param++; - } - else - { - if (param < pcnt) - { - *outl++ = *modechar; - } - outpars[pc++] = parameters[param++]; - } + abort = true; + break; } - else + /* A module whacked the parameter completely, and there was one. abort. */ + if ((had_parameter) && (parameter.empty())) { - *outl++ = *modechar; - chan->SetCustomMode(*modechar,mdir); - // include parameters in output if mode has them - if ((ModeDefinedOn(*modechar,MT_CHANNEL)>0) && (mdir)) - { - if (param < pcnt) - { - chan->SetCustomModeParam(*modechar,parameters[param],mdir); - outpars[pc++] = parameters[param++]; - } - } + abort = true; + break; } - // break, because only one module can handle the mode. - handled = true; } + + if (abort) + continue; } - } - } - } - else - { - WriteServ(user->fd,"472 %s %c :is unknown mode char to me",user->nick,*modechar); - } - break; - } - } + else + { + /* Fix by brain: mode watchers not being called for parameterless modes */ + for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++) + { + if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == false) + { + abort = true; + break; + } + } - /* Null terminate it now we're done */ - *outl = 0; + if (abort) + continue; + } + /* It's an oper only mode, check if theyre an oper. If they arent, + * eat any parameter that came with the mode, and continue to next + */ + if ((IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!IS_OPER(user))) + { + user->WriteServ("481 %s :Permission Denied - Only IRC operators may %sset %s mode %c", user->nick, + adding ? "" : "un", type == MODETYPE_CHANNEL ? "channel" : "user", + modehandlers[handler_id]->GetModeChar()); + continue; + } - /************ Fast, but confusing string tidying ************/ - outl = outlist; - while (*outl && (*outl < 'A')) - outl++; - /* outl now points to the first mode character after +'s and -'s */ - outl--; - /* Now points at first mode-modifier + or - symbol */ - char* trim = outl; - /* Now we tidy off any trailing -'s etc */ - while (*trim++); - trim--; - while ((*--trim == '+') || (*trim == '-')) - *trim = 0; - /************ Done wih the string tidy functions ************/ + /* Call the handler for the mode */ + ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding); + if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter.empty())) + { + /* The handler nuked the parameter and they are supposed to have one. + * We CANT continue now, even if they actually returned MODEACTION_ALLOW, + * so we bail to the next mode character. + */ + continue; + } - /* The mode change must be at least two characters long (+ or - and at least one mode) */ - if (((*outl == '+') || (*outl == '-')) && *(outl+1)) - { - for (ptr = 0; ptr < pc; ptr++) - { - charlcat(outl,' ',MAXBUF); - strlcat(outl,outpars[ptr],MAXBUF-1); - } - if (local) - { - log(DEBUG,"Local mode change"); - WriteChannelLocal(chan, user, "MODE %s %s",chan->name,outl); - FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl)); + if (ma == MODEACTION_ALLOW) + { + /* We're about to output a valid mode letter - was there previously a pending state-change? */ + if (state_change) + { + if (adding != last_successful_state_change) + output_sequence.append(adding ? "+" : "-"); + last_successful_state_change = adding; + } + + /* Add the mode letter */ + output_sequence.push_back(modechar); + + modehandlers[handler_id]->ChangeCount(adding ? 1 : -1); + + /* Is there a valid parameter for this mode? If so add it to the parameter list */ + if ((modehandlers[handler_id]->GetNumParams(adding)) && (!parameter.empty())) + { + parameter_list << " " << parameter; + parameter_count++; + /* Does this mode have a prefix? */ + if (modehandlers[handler_id]->GetPrefix() && targetchannel) + { + User* user_to_prefix = ServerInstance->FindNick(parameter); + if (user_to_prefix) + targetchannel->SetPrefix(user_to_prefix, modehandlers[handler_id]->GetPrefix(), + modehandlers[handler_id]->GetPrefixRank(), adding); + } + } + + /* Call all the AfterMode events in the mode watchers for this mode */ + for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++) + (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type); + + /* Reset the state change flag */ + state_change = false; + + if ((output_sequence.length() + parameter_list.str().length() > 450) || (output_sequence.length() > 100) + || (parameter_count > MAXMODES)) + { + /* We cant have a mode sequence this long */ + letter = mode_sequence.end() - 1; + continue; + } + } + } + } + else + { + /* No mode handler? Unknown mode character then. */ + user->WriteServ("%d %s %c :is unknown mode char to me", type == MODETYPE_CHANNEL ? 472 : 501, user->nick, modechar); + } + break; + } } - else + + /* Was there at least one valid mode in the sequence? */ + if (!output_sequence.empty()) { if (servermode) { - if (!silent) + if (type == MODETYPE_CHANNEL) { - WriteChannelWithServ(Config->ServerName,chan,"MODE %s %s",chan->name,outl); + targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name, output_sequence.c_str(), parameter_list.str().c_str()); + this->LastParse = targetchannel->name; + } + else + { + targetuser->WriteServ("MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str()); + this->LastParse = targetuser->nick; } - } else { - if (!silent) + if (type == MODETYPE_CHANNEL) { - WriteChannel(chan,user,"MODE %s %s",chan->name,outl); - FOREACH_MOD(I_OnMode,OnMode(user, chan, TYPE_CHANNEL, outl)); + targetchannel->WriteChannel(user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str()); + FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str())); + this->LastParse = targetchannel->name; + } + else + { + user->WriteTo(targetuser,"MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str()); + FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence + parameter_list.str())); + this->LastParse = targetuser->nick; } } + + LastParse.append(" "); + LastParse.append(output_sequence); + LastParse.append(parameter_list.str()); } } } -// based on sourcemodes, return true or false to determine if umode is a valid mode a user may set on themselves or others. +const std::string& ModeParser::GetLastParse() +{ + return LastParse; +} -bool ModeParser::AllowedUmode(char umode, char* sourcemodes,bool adding,bool serveroverride) +void ModeParser::CleanMask(std::string &mask) { - bool sourceoper = (strchr(sourcemodes,'o') != NULL); - log(DEBUG,"Allowed_umode: %c %s",umode,sourcemodes); - // Servers can +o and -o arbitrarily - if ((serveroverride == true) && (umode == 'o')) + std::string::size_type pos_of_pling = mask.find_first_of('!'); + std::string::size_type pos_of_at = mask.find_first_of('@'); + std::string::size_type pos_of_dot = mask.find_first_of('.'); + std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */ + + if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos)) { - return true; + /* Just a nick, or just a host */ + if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos)) + { + /* It has no '.' in it, it must be a nick. */ + mask.append("!*@*"); + } + else + { + /* Got a dot in it? Has to be a host */ + mask = "*!*@" + mask; + } } - // RFC1459 specified modes - if ((umode == 'w') || (umode == 's') || (umode == 'i')) + else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos)) { - /* umode allowed by RFC1459 scemantics */ - return true; + /* Has an @ but no !, its a user@host */ + mask = "*!" + mask; } - - /* user may not +o themselves or others, but an oper may de-oper other opers or themselves */ - if (sourceoper && !adding) + else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos)) { - return true; + /* Has a ! but no @, it must be a nick!ident */ + mask.append("@*"); } - else if (umode == 'o') - { - /* Bad oper, bad bad! */ +} + +bool ModeParser::AddMode(ModeHandler* mh) +{ + unsigned char mask = 0; + unsigned char pos = 0; + + /* Yes, i know, this might let people declare modes like '_' or '^'. + * If they do that, thats their problem, and if i ever EVER see an + * official InspIRCd developer do that, i'll beat them with a paddle! + */ + if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z') || (mh->GetPrefix() > 126)) + return false; + + /* A mode prefix of ',' is not acceptable, it would fuck up server to server. + * A mode prefix of ':' will fuck up both server to server, and client to server. + * A mode prefix of '#' will mess up /whois and /privmsg + */ + if ((mh->GetPrefix() == ',') || (mh->GetPrefix() == ':') || (mh->GetPrefix() == '#')) return false; - } - - /* process any module-defined modes that need oper */ - if ((ModeDefinedOper(umode,MT_CLIENT)) && (sourceoper)) - { - log(DEBUG,"umode %c allowed by module handler (oper only mode)",umode); - return true; - } - else if (ModeDefined(umode,MT_CLIENT)) - { - // process any module-defined modes that don't need oper - log(DEBUG,"umode %c allowed by module handler (non-oper mode)",umode); - if ((ModeDefinedOper(umode,MT_CLIENT)) && (!sourceoper)) - { - // no, this mode needs oper, and this user 'aint got what it takes! - return false; - } - return true; - } - // anything else - return false. - log(DEBUG,"umode %c not known by any ruleset",umode); - return false; + mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL; + pos = (mh->GetModeChar()-65) | mask; + + if (modehandlers[pos]) + return false; + + modehandlers[pos] = mh; + return true; } -bool ModeParser::ProcessModuleUmode(char umode, userrec* source, void* dest, bool adding) +bool ModeParser::DelMode(ModeHandler* mh) { - userrec* s2; - bool faked = false; - if (!source) - { - s2 = new userrec; - strlcpy(s2->nick,Config->ServerName,NICKMAX-1); - *s2->modes = 'o'; - *(s2->modes+1) = 0; - s2->fd = -1; - source = s2; - faked = true; - } - string_list p; - p.clear(); - if (ModeDefined(umode,MT_CLIENT)) + unsigned char mask = 0; + unsigned char pos = 0; + + if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z')) + return false; + + mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL; + pos = (mh->GetModeChar()-65) | mask; + + if (!modehandlers[pos]) + return false; + + switch (mh->GetModeType()) { - for (int i = 0; i <= MODCOUNT; i++) - { - if (modules[i]->OnExtendedMode(source,(void*)dest,umode,MT_CLIENT,adding,p)) + case MODETYPE_USER: + for (user_hash::iterator i = ServerInstance->clientlist->begin(); i != ServerInstance->clientlist->end(); i++) { - log(DEBUG,"Module %s claims umode %c",Config->module_names[i].c_str(),umode); - return true; + mh->RemoveMode(i->second); } - } - log(DEBUG,"No module claims umode %c",umode); - if (faked) - { - delete s2; - source = NULL; - } - return false; - } - else - { - if (faked) - { - delete s2; - source = NULL; - } - return false; + break; + case MODETYPE_CHANNEL: + for (chan_hash::iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++) + { + mh->RemoveMode(i->second); + } + break; } + + modehandlers[pos] = NULL; + + return true; } -void cmd_mode::Handle (char **parameters, int pcnt, userrec *user) +ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt) { - chanrec* chan; - userrec* dest = Find(parameters[0]); - int MOD_RESULT; - int can_change; - int direction = 1; - char outpars[MAXBUF]; - bool next_ok = true; - - if (!user) - return; + unsigned char mask = 0; + unsigned char pos = 0; + + if ((modeletter < 'A') || (modeletter > 'z')) + return NULL; + + mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL; + pos = (modeletter-65) | mask; + + return modehandlers[pos]; +} + +std::string ModeParser::UserModeList() +{ + char modestr[256]; + int pointer = 0; - if ((dest) && (pcnt == 1)) + for (unsigned char mode = 'A'; mode <= 'z'; mode++) { - WriteServ(user->fd,"221 %s :+%s",dest->nick,dest->modes); - return; + unsigned char pos = (mode-65) | MASK_USER; + + if (modehandlers[pos]) + modestr[pointer++] = mode; } - else if ((dest) && (pcnt > 1)) + modestr[pointer++] = 0; + return modestr; +} + +std::string ModeParser::ChannelModeList() +{ + char modestr[256]; + int pointer = 0; + + for (unsigned char mode = 'A'; mode <= 'z'; mode++) { - std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false); - parameters[1] = (char*)tidied.c_str(); + if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h')) + continue; - char dmodes[MAXBUF]; - strlcpy(dmodes,dest->modes,MAXMODES); - log(DEBUG,"pulled up dest user modes: %s",dmodes); + unsigned char pos = (mode-65) | MASK_CHANNEL; - can_change = 0; - if (user != dest) - { - if ((*user->oper) || (is_uline(user->server))) - { - can_change = 1; - } - } - else - { - can_change = 1; - } - if (!can_change) - { - WriteServ(user->fd,"482 %s :Can't change mode for other users",user->nick); - return; - } - - outpars[0] = *parameters[1]; - outpars[1] = 0; - direction = (*parameters[1] == '+'); + if (modehandlers[pos]) + modestr[pointer++] = mode; + } + modestr[pointer++] = 0; + return modestr; +} - if ((*parameters[1] != '+') && (*parameters[1] != '-')) - return; +std::string ModeParser::ParaModeList() +{ + char modestr[256]; + int pointer = 0; - for (char* i = parameters[1]; *i; i++) - { - if ((i != parameters[1]) && (*i != '+') && (*i != '-')) - next_ok = true; + for (unsigned char mode = 'A'; mode <= 'z'; mode++) + { + if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h')) + continue; - switch (*i) - { - case ' ': - continue; + unsigned char pos = (mode-65) | MASK_CHANNEL; - case '+': - if ((direction != 1) && (next_ok)) - { - charlcat(outpars,'+',MAXBUF); - next_ok = false; - } - direction = 1; - break; + if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true))) + modestr[pointer++] = mode; + } + modestr[pointer++] = 0; + return modestr; +} - case '-': - if ((direction != 0) && (next_ok)) - { - charlcat(outpars,'-',MAXBUF); - next_ok = false; - } - direction = 0; - break; +ModeHandler* ModeParser::FindPrefix(unsigned const char pfxletter) +{ + for (unsigned char mode = 'A'; mode <= 'z'; mode++) + { + unsigned char pos = (mode-65) | MASK_CHANNEL; - default: - can_change = 0; - if (*user->oper) - { - can_change = 1; - } - else - { - if ((*i == 'i') || (*i == 'w') || (*i == 's') || (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,direction,false))) - { - can_change = 1; - } - } - if (can_change) - { - if (direction == 1) - { - if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,false))) - { - if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o')) - { - charlcat(dmodes,*i,53); - charlcat(outpars,*i,MAXMODES); - switch (*i) - { - case 'o': - FOREACH_MOD(I_OnGlobalOper,OnGlobalOper(dest)); - break; - case 'i': - dest->modebits |= UM_INVISIBLE; - break; - case 's': - dest->modebits |= UM_SERVERNOTICE; - break; - case 'w': - dest->modebits |= UM_WALLOPS; - break; - default: - break; - } - } - } - } - else - { - if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,false)) && (strchr(dmodes,*i))) - { - if ((ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction)) || (*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o')) - { - charlcat(outpars,*i,MAXMODES); - charremove(dmodes,*i); - switch (*i) - { - case 'o': - *dest->oper = 0; - DeleteOper(dest); - break; - case 'i': - dest->modebits &= ~UM_INVISIBLE; - break; - case 's': - dest->modebits &= ~UM_SERVERNOTICE; - break; - case 'w': - dest->modebits &= ~UM_WALLOPS; - break; - default: - break; - } - } - } - } - } - break; - } - } - if (*outpars) + if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix() == pfxletter)) { - char b[MAXBUF]; - char* z = b; + return modehandlers[pos]; + } + } + return NULL; +} - for (char* i = outpars; *i;) - { - *z++ = *i++; - if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+'))) - { - // someones playing silly buggers and trying - // to put a +- or -+ into the line... - i++; - } - if (!*(i+1)) - { - // Someone's trying to make the last character in - // the line be a + or - symbol. - if ((*i == '-') || (*i == '+')) - { - i++; - } - } - } - *z = 0; +std::string ModeParser::ModeString(User* user, Channel* channel) +{ + std::string types; + std::string pars; + + if (!channel || !user) + return ""; - if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-'))) + for (unsigned char mode = 'A'; mode <= 'z'; mode++) + { + unsigned char pos = (mode-65) | MASK_CHANNEL; + ModeHandler* mh = modehandlers[pos]; + if ((mh) && (mh->GetNumParams(true)) && (mh->GetNumParams(false))) + { + ModePair ret; + ret = mh->ModeSet(NULL, user, channel, user->nick); + if ((ret.first) && (ret.second == user->nick)) { - WriteTo(user, dest, "MODE %s :%s", dest->nick, b); - FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b)); + pars.append(" "); + pars.append(user->nick); + types.push_back(mh->GetModeChar()); } + } + } - log(DEBUG,"Stripped mode line"); - log(DEBUG,"Line dest is now %s",dmodes); - strlcpy(dest->modes,dmodes,MAXMODES-1); + return types+pars; +} - } +std::string ModeParser::ChanModes() +{ + std::string type1; /* Listmodes EXCEPT those with a prefix */ + std::string type2; /* Modes that take a param when adding or removing */ + std::string type3; /* Modes that only take a param when adding */ + std::string type4; /* Modes that dont take a param */ - return; - } - else + for (unsigned char mode = 'A'; mode <= 'z'; mode++) { - chan = FindChan(parameters[0]); - if(chan) - { - if (pcnt == 1) - { - /* just /modes #channel */ - WriteServ(user->fd,"324 %s %s +%s",user->nick, chan->name, chanmodes(chan, chan->HasUser(user))); - WriteServ(user->fd,"329 %s %s %d", user->nick, chan->name, chan->created); - return; - } - else if (pcnt == 2) + if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h')) + continue; + + unsigned char pos = (mode-65) | MASK_CHANNEL; + /* One parameter when adding */ + if (modehandlers[pos]) + { + if (modehandlers[pos]->GetNumParams(true)) { - char* mode = parameters[1]; - - MOD_RESULT = 0; - - if (*mode == '+') - mode++; - - FOREACH_RESULT(I_OnRawMode,OnRawMode(user, chan, *mode, "", false, 0)); - if(!MOD_RESULT) + if ((modehandlers[pos]->IsListMode()) && (!modehandlers[pos]->GetPrefix())) + { + type1 += modehandlers[pos]->GetModeChar(); + } + else { - if (*mode == 'b') + /* ... and one parameter when removing */ + if (modehandlers[pos]->GetNumParams(false)) { - for (BanList::iterator i = chan->bans.begin(); i != chan->bans.end(); i++) + /* But not a list mode */ + if (!modehandlers[pos]->GetPrefix()) { - WriteServ(user->fd,"367 %s %s %s %s %d",user->nick, chan->name, i->data, i->set_by, i->set_time); + type2 += modehandlers[pos]->GetModeChar(); } - WriteServ(user->fd,"368 %s %s :End of channel ban list",user->nick, chan->name); - return; } - - if ((ModeDefined(*mode,MT_CHANNEL)) && (ModeIsListMode(*mode,MT_CHANNEL))) + else { - // list of items for an extmode - log(DEBUG,"Calling OnSendList for all modules, list output for mode %c",*mode); - FOREACH_MOD(I_OnSendList,OnSendList(user,chan,*mode)); - return; + /* No parameters when removing */ + type3 += modehandlers[pos]->GetModeChar(); } } } - - if ((IS_LOCAL(user)) && (!is_uline(user->server)) && (!chan->HasUser(user))) - { - WriteServ(user->fd,"442 %s %s :You're not on that channel!",user->nick, chan->name); - return; - } - - MOD_RESULT = 0; - FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, chan, AC_GENERAL_MODE)); - - if(MOD_RESULT == ACR_DENY) - return; - - if(MOD_RESULT == ACR_DEFAULT) + else { - if ((IS_LOCAL(user)) && (cstatus(user,chan) < STATUS_HOP)) - { - WriteServ(user->fd,"482 %s %s :You must be at least a half-operator to change modes on this channel",user->nick, chan->name); - return; - } + type4 += modehandlers[pos]->GetModeChar(); } - - ServerInstance->ModeGrok->ProcessModes(parameters,user,chan,cstatus(user,chan),pcnt,false,false,false); } - else + + } + + return type1 + "," + type2 + "," + type3 + "," + type4; +} + +bool ModeParser::PrefixComparison(prefixtype one, prefixtype two) +{ + return one.second > two.second; +} + +std::string ModeParser::BuildPrefixes() +{ + std::string mletters; + std::string mprefixes; + pfxcontainer pfx; + std::map prefix_to_mode; + + for (unsigned char mode = 'A'; mode <= 'z'; mode++) + { + if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h')) + continue; + + unsigned char pos = (mode-65) | MASK_CHANNEL; + + if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix())) { - WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]); + pfx.push_back(std::make_pair(modehandlers[pos]->GetPrefix(), modehandlers[pos]->GetPrefixRank())); + prefix_to_mode[modehandlers[pos]->GetPrefix()] = modehandlers[pos]->GetModeChar(); } } -} + sort(pfx.begin(), pfx.end(), ModeParser::PrefixComparison); + for (pfxcontainer::iterator n = pfx.begin(); n != pfx.end(); n++) + { + mletters = mletters + n->first; + mprefixes = mprefixes + prefix_to_mode.find(n->first)->second; + } + return "(" + mprefixes + ")" + mletters; +} -void ModeParser::ServerMode(char **parameters, int pcnt, userrec *user) +bool ModeParser::AddModeWatcher(ModeWatcher* mw) { - chanrec* Ptr; - userrec* dest = Find(parameters[0]); - int can_change; - int direction = 1; - char outpars[MAXBUF]; - bool next_ok = true; - - if ((dest) && (pcnt > 1)) - { - std::string tidied = ServerInstance->ModeGrok->CompressModes(parameters[1],false); - parameters[1] = (char*)tidied.c_str(); + unsigned char mask = 0; + unsigned char pos = 0; - char dmodes[MAXBUF]; - strlcpy(dmodes,dest->modes,MAXBUF); + if (!mw) + return false; - outpars[0] = *parameters[1]; - outpars[1] = 0; - direction = (*parameters[1] == '+'); + if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z')) + return false; - if ((*parameters[1] != '+') && (*parameters[1] != '-')) - return; + mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL; + pos = (mw->GetModeChar()-65) | mask; - for (char* i = parameters[1]; *i; i++) - { - if ((i != parameters[1]) && (*i != '+') && (*i != '-')) - next_ok = true; + modewatchers[pos].push_back(mw); - switch (*i) - { - case ' ': - continue; + return true; +} - case '+': - if ((direction != 1) && (next_ok)) - { - next_ok = false; - charlcat(outpars,'+',MAXBUF); - } - direction = 1; - break; +bool ModeParser::DelModeWatcher(ModeWatcher* mw) +{ + unsigned char mask = 0; + unsigned char pos = 0; - case '-': - if ((direction != 0) && (next_ok)) - { - next_ok = false; - charlcat(outpars,'-',MAXBUF); - } - direction = 0; - break; + if (!mw) + return false; - default: - log(DEBUG,"begin mode processing entry"); - can_change = 1; - if (can_change) - { - if (direction == 1) - { - log(DEBUG,"umode %c being added",*i); - if ((!strchr(dmodes,*i)) && (ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,true,true))) - { - log(DEBUG,"umode %c is an allowed umode",*i); - if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction))) - { - charlcat(dmodes,*i,MAXBUF); - charlcat(outpars,*i,53); - switch (*i) - { - case 'i': - dest->modebits |= UM_INVISIBLE; - break; - case 's': - dest->modebits |= UM_SERVERNOTICE; - break; - case 'w': - dest->modebits |= UM_WALLOPS; - break; - default: - break; - } - } - } - } - else - { - // can only remove a mode they already have - log(DEBUG,"umode %c being removed",*i); - if ((ServerInstance->ModeGrok->AllowedUmode(*i,user->modes,false,true)) && (strchr(dmodes,*i))) - { - log(DEBUG,"umode %c is an allowed umode",*i); - if ((*i == 'i') || (*i == 's') || (*i == 'w') || (*i == 'o') || (ServerInstance->ModeGrok->ProcessModuleUmode(*i, user, dest, direction))) - { - charlcat(outpars,*i,MAXBUF); - charremove(dmodes,*i); - switch (*i) - { - case 'i': - dest->modebits &= ~UM_INVISIBLE; - break; - case 's': - dest->modebits &= ~UM_SERVERNOTICE; - break; - case 'w': - dest->modebits &= ~UM_WALLOPS; - break; - default: - break; - } - } - } - } - } - break; - } - } - if (*outpars) - { - char b[MAXBUF]; - char* z = b; - - for (char* i = outpars; *i;) - { - *z++ = *i++; - if (((*i == '-') || (*i == '+')) && ((*(i+1) == '-') || (*(i+1) == '+'))) - { - // someones playing silly buggers and trying - // to put a +- or -+ into the line... - i++; - } - if (!*(i+1)) - { - // Someone's trying to make the last character in - // the line be a + or - symbol. - if ((*i == '-') || (*i == '+')) - { - i++; - } - } - } - *z = 0; - - if ((*b) && (!IS_SINGLE(b,'+')) && (!IS_SINGLE(b,'-'))) - { - WriteTo(user, dest, "MODE %s :%s", dest->nick, b); - FOREACH_MOD(I_OnMode,OnMode(user, dest, TYPE_USER, b)); - } - - log(DEBUG,"Stripped mode line"); - log(DEBUG,"Line dest is now %s",dmodes); - strlcpy(dest->modes,dmodes,MAXMODES-1); - - } + if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z')) + return false; - return; + mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL; + pos = (mw->GetModeChar()-65) | mask; + + ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw); + + if (a == modewatchers[pos].end()) + { + return false; } - - Ptr = FindChan(parameters[0]); - if (Ptr) + + modewatchers[pos].erase(a); + + return true; +} + +/** This default implementation can remove simple user modes + */ +void ModeHandler::RemoveMode(User* user) +{ + char moderemove[MAXBUF]; + const char* parameters[] = { user->nick, moderemove }; + + if (user->IsModeSet(this->GetModeChar())) { - ServerInstance->ModeGrok->ProcessModes(parameters,user,Ptr,STATUS_OP,pcnt,true,false,false); + sprintf(moderemove,"-%c",this->GetModeChar()); + ServerInstance->Parser->CallHandler("MODE", parameters, 2, user); } - else +} + +/** This default implementation can remove simple channel modes + * (no parameters) + */ +void ModeHandler::RemoveMode(Channel* channel) +{ + char moderemove[MAXBUF]; + const char* parameters[] = { channel->name, moderemove }; + + if (channel->IsModeSet(this->GetModeChar())) { - WriteServ(user->fd,"401 %s %s :No such nick/channel",user->nick, parameters[0]); + sprintf(moderemove,"-%c",this->GetModeChar()); + ServerInstance->SendMode(parameters, 2, ServerInstance->FakeClient); } } + +ModeParser::ModeParser(InspIRCd* Instance) : ServerInstance(Instance) +{ + ModeHandler* modes[] = + { + new ModeChannelSecret(Instance), + new ModeChannelPrivate(Instance), + new ModeChannelModerated(Instance), + new ModeChannelTopicOps(Instance), + new ModeChannelNoExternal(Instance), + new ModeChannelInviteOnly(Instance), + new ModeChannelKey(Instance), + new ModeChannelLimit(Instance), + new ModeChannelBan(Instance), + new ModeChannelOp(Instance), + new ModeChannelHalfOp(Instance), + new ModeChannelVoice(Instance), + new ModeUserServerNotice(Instance), + new ModeUserWallops(Instance), + new ModeUserInvisible(Instance), + new ModeUserOperator(Instance), + new ModeUserServerNoticeMask(Instance), + NULL + }; + + /* Clear mode list */ + memset(modehandlers, 0, sizeof(modehandlers)); + memset(modewatchers, 0, sizeof(modewatchers)); + + /* Last parse string */ + LastParse.clear(); + + /* Initialise the RFC mode letters */ + for (int index = 0; modes[index]; index++) + this->AddMode(modes[index]); +}