-/* +------------------------------------+\r * | Inspire Internet Relay Chat Daemon |\r * +------------------------------------+\r *\r * InspIRCd: (C) 2002-2007 InspIRCd Development Team\r * See: http://www.inspircd.org/wiki/index.php/Credits\r *\r * This program is free but copyrighted software; see\r * the file COPYING for details.\r *\r * ---------------------------------------------------\r */\r\r#include "inspircd.h"\r#include "users.h"\r#include "modules.h"\r#include "inspstring.h"\r#include "mode.h"\r\r/* +s (secret) */\r#include "modes/cmode_s.h"\r/* +p (private) */\r#include "modes/cmode_p.h"\r/* +b (bans) */\r#include "modes/cmode_b.h"\r/* +m (moderated) */\r#include "modes/cmode_m.h"\r/* +t (only (half) ops can change topic) */\r#include "modes/cmode_t.h"\r/* +n (no external messages) */\r#include "modes/cmode_n.h"\r/* +i (invite only) */\r#include "modes/cmode_i.h"\r/* +k (keyed channel) */\r#include "modes/cmode_k.h"\r/* +l (channel user limit) */\r#include "modes/cmode_l.h"\r/* +o (channel op) */\r#include "modes/cmode_o.h"\r/* +h (channel halfop) */\r#include "modes/cmode_h.h"\r/* +v (channel voice) */\r#include "modes/cmode_v.h"\r/* +s (server notices) */\r#include "modes/umode_s.h"\r/* +w (see wallops) */\r#include "modes/umode_w.h"\r/* +i (invisible) */\r#include "modes/umode_i.h"\r/* +o (operator) */\r#include "modes/umode_o.h"\r/* +n (notice mask - our implementation of snomasks) */\r#include "modes/umode_n.h"\r\rModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly, char mprefix)\r : 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)\r{\r}\r\rModeHandler::~ModeHandler()\r{\r}\r\rbool ModeHandler::IsListMode()\r{\r return list;\r}\r\runsigned int ModeHandler::GetPrefixRank()\r{\r return 0;\r}\r\runsigned int ModeHandler::GetCount()\r{\r return 0;\r}\r\rvoid ModeHandler::ChangeCount(int modifier)\r{\r count += modifier;\r}\r\rModeType ModeHandler::GetModeType()\r{\r return m_type;\r}\r\rbool ModeHandler::NeedsOper()\r{\r return oper;\r}\r\rchar ModeHandler::GetPrefix()\r{\r return prefix;\r}\r\rint ModeHandler::GetNumParams(bool adding)\r{\r return adding ? n_params_on : n_params_off;\r}\r\rchar ModeHandler::GetModeChar()\r{\r return mode;\r}\r\rModeAction ModeHandler::OnModeChange(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding)\r{\r return MODEACTION_DENY;\r}\r\rModePair ModeHandler::ModeSet(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter)\r{\r if (dest)\r {\r return std::make_pair(dest->IsModeSet(this->mode), "");\r }\r else\r {\r return std::make_pair(channel->IsModeSet(this->mode), "");\r }\r}\r\rvoid ModeHandler::DisplayList(userrec* user, chanrec* channel)\r{\r}\r\rbool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string &their_param, const std::string &our_param, chanrec* channel)\r{\r return (ours < theirs);\r}\r\rModeWatcher::ModeWatcher(InspIRCd* Instance, char modeletter, ModeType type) : ServerInstance(Instance), mode(modeletter), m_type(type)\r{\r}\r\rModeWatcher::~ModeWatcher()\r{\r}\r\rchar ModeWatcher::GetModeChar()\r{\r return mode;\r}\r\rModeType ModeWatcher::GetModeType()\r{\r return m_type;\r}\r\rbool ModeWatcher::BeforeMode(userrec* source, userrec* dest, chanrec* channel, std::string ¶meter, bool adding, ModeType type)\r{\r return true;\r}\r\rvoid ModeWatcher::AfterMode(userrec* source, userrec* dest, chanrec* channel, const std::string ¶meter, bool adding, ModeType type)\r{\r}\r\ruserrec* ModeParser::SanityChecks(userrec *user,const char *dest,chanrec *chan,int status)\r{\r userrec *d;\r if ((!user) || (!dest) || (!chan) || (!*dest))\r {\r return NULL;\r }\r d = ServerInstance->FindNick(dest);\r if (!d)\r {\r user->WriteServ("401 %s %s :No such nick/channel",user->nick, dest);\r return NULL;\r }\r return d;\r}\r\rconst char* ModeParser::Grant(userrec *d,chanrec *chan,int MASK)\r{\r if (!chan)\r return "";\r\r UCListIter n = d->chans.find(chan);\r if (n != d->chans.end())\r {\r if (n->second & MASK)\r {\r return "";\r }\r n->second = n->second | MASK;\r switch (MASK)\r {\r case UCMODE_OP:\r n->first->AddOppedUser(d);\r break;\r case UCMODE_HOP:\r n->first->AddHalfoppedUser(d);\r break;\r case UCMODE_VOICE:\r n->first->AddVoicedUser(d);\r break;\r }\r return d->nick;\r }\r return "";\r}\r\rconst char* ModeParser::Revoke(userrec *d,chanrec *chan,int MASK)\r{\r if (!chan)\r return "";\r\r UCListIter n = d->chans.find(chan);\r if (n != d->chans.end())\r {\r if ((n->second & MASK) == 0)\r {\r return "";\r }\r n->second ^= MASK;\r switch (MASK)\r {\r case UCMODE_OP:\r n->first->DelOppedUser(d);\r break;\r case UCMODE_HOP:\r n->first->DelHalfoppedUser(d);\r break;\r case UCMODE_VOICE:\r n->first->DelVoicedUser(d);\r break;\r }\r return d->nick;\r }\r return "";\r}\r\rvoid ModeParser::DisplayCurrentModes(userrec *user, userrec* targetuser, chanrec* targetchannel, const char* text)\r{\r if (targetchannel)\r {\r /* Display channel's current mode string */\r user->WriteServ("324 %s %s +%s",user->nick, targetchannel->name, targetchannel->ChanModes(targetchannel->HasUser(user)));\r user->WriteServ("329 %s %s %lu", user->nick, targetchannel->name, (unsigned long)targetchannel->age);\r return;\r }\r else if (targetuser)\r {\r if (targetuser->Visibility && !targetuser->Visibility->VisibleTo(user))\r {\r user->WriteServ("401 %s %s :No such nick/channel",user->nick, text);\r return;\r }\r\r if ((targetuser == user) || (IS_OPER(user)))\r {\r /* Display user's current mode string */\r user->WriteServ("221 %s :+%s",targetuser->nick,targetuser->FormatModes());\r if (IS_OPER(targetuser))\r user->WriteServ("008 %s +%s :Server notice mask", targetuser->nick, targetuser->FormatNoticeMasks());\r return;\r }\r else\r {\r user->WriteServ("502 %s :Can't change mode for other users", user->nick);\r return;\r }\r }\r\r /* No such nick/channel */\r user->WriteServ("401 %s %s :No such nick/channel",user->nick, text);\r return;\r}\r\rvoid ModeParser::Process(const char** parameters, int pcnt, userrec *user, bool servermode)\r{\r std::string target = parameters[0];\r ModeType type = MODETYPE_USER;\r unsigned char mask = 0;\r chanrec* targetchannel = ServerInstance->FindChan(parameters[0]);\r userrec* targetuser = ServerInstance->FindNick(parameters[0]);\r\r LastParse.clear();\r\r /* Special case for displaying the list for listmodes,\r * e.g. MODE #chan b, or MODE #chan +b without a parameter\r */\r if ((targetchannel) && (pcnt == 2))\r {\r const char* mode = parameters[1];\r int nonlistmodes_found = 0;\r bool sent[256];\r\r mask = MASK_CHANNEL;\r\r memset(&sent, 0, 256);\r \r while (mode && *mode)\r {\r unsigned char mletter = *mode;\r\r if (*mode == '+')\r {\r mode++;\r continue;\r }\r\r /* Ensure the user doesnt request the same mode twice,\r * so they cant flood themselves off out of idiocy.\r */\r if (!sent[mletter])\r {\r sent[mletter] = true;\r }\r else\r {\r mode++;\r continue;\r }\r\r ModeHandler *mh = this->FindMode(*mode, MODETYPE_CHANNEL);\r bool display = true;\r\r if ((mh) && (mh->IsListMode()))\r {\r if (ServerInstance->Config->HideModeLists[mletter] && (targetchannel->GetStatus(user) < STATUS_HOP))\r {\r user->WriteServ("482 %s %s :Only half-operators and above may view the +%c list",user->nick, targetchannel->name, *mode++);\r continue;\r }\r\r /** See below for a description of what craq this is :D\r */\r unsigned char handler_id = (*mode - 65) | mask;\r\r for(ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)\r {\r std::string dummyparam;\r \r if (!((*watchers)->BeforeMode(user, NULL, targetchannel, dummyparam, true, MODETYPE_CHANNEL)))\r display = false;\r }\r\r if (display)\r mh->DisplayList(user, targetchannel);\r }\r else\r nonlistmodes_found++;\r\r mode++;\r }\r\r /* We didnt have any modes that were non-list, we can return here */\r if (!nonlistmodes_found)\r return;\r }\r\r if (pcnt == 1)\r {\r this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0]);\r }\r else if (pcnt > 1)\r {\r if (targetchannel)\r {\r type = MODETYPE_CHANNEL;\r mask = MASK_CHANNEL;\r\r /* Extra security checks on channel modes\r * (e.g. are they a (half)op?\r */\r\r if ((IS_LOCAL(user)) && (targetchannel->GetStatus(user) < STATUS_HOP))\r {\r /* We don't have halfop */\r int MOD_RESULT = 0;\r FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, targetchannel, AC_GENERAL_MODE));\r if (MOD_RESULT == ACR_DENY)\r return;\r\r if (MOD_RESULT == ACR_DEFAULT)\r {\r /* Are we a uline or is it a servermode? */\r if ((!ServerInstance->ULine(user->server)) && (!servermode))\r {\r /* Not enough permission:\r * NOT a uline and NOT a servermode,\r * OR, NOT halfop or above.\r */\r user->WriteServ("482 %s %s :You're not a channel (half)operator",user->nick, targetchannel->name);\r return;\r }\r }\r }\r }\r else if (targetuser)\r {\r type = MODETYPE_USER;\r mask = MASK_USER;\r if ((user != targetuser) && (!ServerInstance->ULine(user->server)))\r {\r user->WriteServ("502 %s :Can't change mode for other users", user->nick);\r return;\r }\r }\r else\r {\r /* No such nick/channel */\r user->WriteServ("401 %s %s :No such nick/channel",user->nick, parameters[0]);\r return;\r }\r\r std::string mode_sequence = parameters[1];\r std::string parameter;\r std::ostringstream parameter_list;\r std::string output_sequence;\r bool adding = true, state_change = false;\r unsigned char handler_id = 0;\r int parameter_counter = 2; /* Index of first parameter */\r int parameter_count = 0;\r bool last_successful_state_change = false;\r\r /* A mode sequence that doesnt start with + or -. Assume +. - Thanks for the suggestion spike (bug#132) */\r if ((*mode_sequence.begin() != '+') && (*mode_sequence.begin() != '-'))\r mode_sequence.insert(0, "+");\r\r for (std::string::const_iterator letter = mode_sequence.begin(); letter != mode_sequence.end(); letter++)\r {\r unsigned char modechar = *letter;\r\r switch (modechar)\r {\r /* NB:\r * For + and - mode characters, we don't just stick the character into the output sequence.\r * This is because the user may do something dumb, like: +-+ooo or +oo-+. To prevent this\r * appearing in the output sequence, we store a flag which says there was a state change,\r * which is set on any + or -, however, the + or - that we finish on is only appended to\r * the output stream in the event it is followed by a non "+ or -" character, such as o or v.\r */\r case '+':\r /* The following expression prevents: +o+o nick nick, compressing it to +oo nick nick,\r * however, will allow the + if it is the first item in the sequence, regardless.\r */\r if ((!adding) || (!output_sequence.length()))\r state_change = true;\r adding = true;\r if (!output_sequence.length())\r last_successful_state_change = false;\r continue;\r break;\r case '-':\r if ((adding) || (!output_sequence.length()))\r state_change = true;\r adding = false;\r if (!output_sequence.length())\r last_successful_state_change = true;\r continue;\r break;\r default:\r\r /**\r * Watch carefully for the sleight of hand trick.\r * 65 is the ascii value of 'A'. We take this from\r * the char we're looking at to get a number between\r * 1 and 127. We then logic-or it to get the hashed\r * position, dependent on wether its a channel or\r * a user mode. This is a little stranger, but a lot\r * faster, than using a map of pairs.\r */\r handler_id = (modechar - 65) | mask;\r\r if (modehandlers[handler_id])\r {\r bool abort = false;\r\r if (modehandlers[handler_id]->GetModeType() == type)\r {\r if (modehandlers[handler_id]->GetNumParams(adding))\r {\r /* This mode expects a parameter, do we have any parameters left in our list to use? */\r if (parameter_counter < pcnt)\r {\r parameter = parameters[parameter_counter++];\r\r /* Yerk, invalid! */\r if ((parameter.find(':') == 0) || (parameter.rfind(' ') != std::string::npos))\r parameter.clear();\r }\r else\r {\r /* No parameter, continue to the next mode */\r continue;\r }\r\r bool had_parameter = !parameter.empty();\r \r for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)\r {\r if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == false)\r {\r abort = true;\r break;\r }\r /* A module whacked the parameter completely, and there was one. abort. */\r if ((had_parameter) && (parameter.empty()))\r {\r abort = true;\r break;\r }\r }\r\r if (abort)\r continue;\r }\r else\r {\r /* Fix by brain: mode watchers not being called for parameterless modes */\r for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)\r {\r if ((*watchers)->BeforeMode(user, targetuser, targetchannel, parameter, adding, type) == false)\r {\r abort = true;\r break;\r }\r }\r\r if (abort)\r continue;\r }\r\r /* It's an oper only mode, check if theyre an oper. If they arent,\r * eat any parameter that came with the mode, and continue to next\r */\r if ((IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!IS_OPER(user)))\r {\r user->WriteServ("481 %s :Permission Denied - Only IRC operators may %sset %s mode %c", user->nick,\r adding ? "" : "un", type == MODETYPE_CHANNEL ? "channel" : "user",\r modehandlers[handler_id]->GetModeChar());\r continue;\r }\r\r /* Call the handler for the mode */\r ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding);\r\r if ((modehandlers[handler_id]->GetNumParams(adding)) && (parameter.empty()))\r {\r /* The handler nuked the parameter and they are supposed to have one.\r * We CANT continue now, even if they actually returned MODEACTION_ALLOW,\r * so we bail to the next mode character.\r */\r continue;\r }\r\r if (ma == MODEACTION_ALLOW)\r {\r /* We're about to output a valid mode letter - was there previously a pending state-change? */\r if (state_change)\r {\r if (adding != last_successful_state_change)\r output_sequence.append(adding ? "+" : "-");\r last_successful_state_change = adding;\r }\r \r /* Add the mode letter */\r output_sequence.push_back(modechar);\r\r /* Is there a valid parameter for this mode? If so add it to the parameter list */\r if ((modehandlers[handler_id]->GetNumParams(adding)) && (!parameter.empty()))\r {\r parameter_list << " " << parameter;\r parameter_count++;\r /* Does this mode have a prefix? */\r if (modehandlers[handler_id]->GetPrefix() && targetchannel)\r {\r userrec* user_to_prefix = ServerInstance->FindNick(parameter);\r if (user_to_prefix)\r targetchannel->SetPrefix(user_to_prefix, modehandlers[handler_id]->GetPrefix(),\r modehandlers[handler_id]->GetPrefixRank(), adding);\r }\r }\r\r /* Call all the AfterMode events in the mode watchers for this mode */\r for (ModeWatchIter watchers = modewatchers[handler_id].begin(); watchers != modewatchers[handler_id].end(); watchers++)\r (*watchers)->AfterMode(user, targetuser, targetchannel, parameter, adding, type);\r\r /* Reset the state change flag */\r state_change = false;\r\r if ((output_sequence.length() + parameter_list.str().length() > 450) || (output_sequence.length() > 100)\r || (parameter_count > MAXMODES))\r {\r /* We cant have a mode sequence this long */\r letter = mode_sequence.end() - 1;\r continue;\r }\r }\r }\r }\r else\r {\r /* No mode handler? Unknown mode character then. */\r user->WriteServ("472 %s %c :is unknown mode char to me",user->nick, modechar);\r }\r break;\r }\r }\r\r /* Was there at least one valid mode in the sequence? */\r if (!output_sequence.empty())\r {\r if (servermode)\r {\r if (type == MODETYPE_CHANNEL)\r {\r targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name, output_sequence.c_str(), parameter_list.str().c_str());\r this->LastParse = targetchannel->name;\r }\r else\r {\r targetuser->WriteServ("MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());\r this->LastParse = targetuser->nick;\r }\r }\r else\r {\r if (type == MODETYPE_CHANNEL)\r {\r targetchannel->WriteChannel(user,"MODE %s %s%s",targetchannel->name,output_sequence.c_str(),parameter_list.str().c_str());\r FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, output_sequence + parameter_list.str()));\r this->LastParse = targetchannel->name;\r }\r else\r {\r user->WriteTo(targetuser,"MODE %s %s%s",targetuser->nick,output_sequence.c_str(), parameter_list.str().c_str());\r FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, output_sequence + parameter_list.str()));\r this->LastParse = targetuser->nick;\r }\r }\r\r LastParse.append(" ");\r LastParse.append(output_sequence);\r LastParse.append(parameter_list.str());\r }\r }\r}\r\rconst std::string& ModeParser::GetLastParse()\r{\r return LastParse;\r}\r\rvoid ModeParser::CleanMask(std::string &mask)\r{\r std::string::size_type pos_of_pling = mask.find_first_of('!');\r std::string::size_type pos_of_at = mask.find_first_of('@');\r std::string::size_type pos_of_dot = mask.find_first_of('.');\r std::string::size_type pos_of_colon = mask.find_first_of(':'); /* Because ipv6 addresses are colon delimited */\r\r if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))\r {\r /* Just a nick, or just a host */\r if ((pos_of_dot == std::string::npos) && (pos_of_colon == std::string::npos))\r {\r /* It has no '.' in it, it must be a nick. */\r mask.append("!*@*");\r }\r else\r {\r /* Got a dot in it? Has to be a host */\r mask = "*!*@" + mask;\r }\r }\r else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))\r {\r /* Has an @ but no !, its a user@host */\r mask = "*!" + mask;\r }\r else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))\r {\r /* Has a ! but no @, it must be a nick!ident */\r mask.append("@*");\r }\r}\r\rbool ModeParser::AddMode(ModeHandler* mh, unsigned const char modeletter)\r{\r unsigned char mask = 0;\r unsigned char pos = 0;\r\r /* Yes, i know, this might let people declare modes like '_' or '^'.\r * If they do that, thats their problem, and if i ever EVER see an\r * official InspIRCd developer do that, i'll beat them with a paddle!\r */\r if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z') || (mh->GetPrefix() > 126))\r return false;\r\r /* A mode prefix of ',' is not acceptable, it would fuck up server to server.\r * A mode prefix of ':' will fuck up both server to server, and client to server.\r * A mode prefix of '#' will mess up /whois and /privmsg\r */\r if ((mh->GetPrefix() == ',') || (mh->GetPrefix() == ':') || (mh->GetPrefix() == '#'))\r return false;\r\r mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;\r pos = (mh->GetModeChar()-65) | mask;\r\r if (modehandlers[pos])\r return false;\r\r modehandlers[pos] = mh;\r return true;\r}\r\rbool ModeParser::DelMode(ModeHandler* mh)\r{\r unsigned char mask = 0;\r unsigned char pos = 0;\r\r if ((mh->GetModeChar() < 'A') || (mh->GetModeChar() > 'z'))\r return false;\r\r mh->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;\r pos = (mh->GetModeChar()-65) | mask;\r\r if (!modehandlers[pos])\r return false;\r\r switch (mh->GetModeType())\r {\r case MODETYPE_USER:\r for (user_hash::iterator i = ServerInstance->clientlist->begin(); i != ServerInstance->clientlist->end(); i++)\r {\r mh->RemoveMode(i->second);\r }\r break;\r case MODETYPE_CHANNEL:\r for (chan_hash::iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)\r {\r mh->RemoveMode(i->second);\r }\r break;\r }\r\r modehandlers[pos] = NULL;\r\r return true;\r}\r\rModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)\r{\r unsigned char mask = 0;\r unsigned char pos = 0;\r\r if ((modeletter < 'A') || (modeletter > 'z'))\r return NULL;\r\r mt == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;\r pos = (modeletter-65) | mask;\r\r return modehandlers[pos];\r}\r\rstd::string ModeParser::UserModeList()\r{\r char modestr[256];\r int pointer = 0;\r\r for (unsigned char mode = 'A'; mode <= 'z'; mode++)\r {\r unsigned char pos = (mode-65) | MASK_USER;\r\r if (modehandlers[pos])\r modestr[pointer++] = mode;\r }\r modestr[pointer++] = 0;\r return modestr;\r}\r\rstd::string ModeParser::ChannelModeList()\r{\r char modestr[256];\r int pointer = 0;\r\r for (unsigned char mode = 'A'; mode <= 'z'; mode++)\r {\r if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))\r continue;\r\r unsigned char pos = (mode-65) | MASK_CHANNEL;\r\r if (modehandlers[pos])\r modestr[pointer++] = mode;\r }\r modestr[pointer++] = 0;\r return modestr;\r}\r\rstd::string ModeParser::ParaModeList()\r{\r char modestr[256];\r int pointer = 0;\r\r for (unsigned char mode = 'A'; mode <= 'z'; mode++)\r {\r if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))\r continue;\r\r unsigned char pos = (mode-65) | MASK_CHANNEL;\r\r if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))\r modestr[pointer++] = mode;\r }\r modestr[pointer++] = 0;\r return modestr;\r}\r\rModeHandler* ModeParser::FindPrefix(unsigned const char pfxletter)\r{\r for (unsigned char mode = 'A'; mode <= 'z'; mode++)\r {\r unsigned char pos = (mode-65) | MASK_CHANNEL;\r\r if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix() == pfxletter))\r {\r return modehandlers[pos];\r }\r }\r return NULL;\r}\r\rstd::string ModeParser::ModeString(userrec* user, chanrec* channel)\r{\r std::string types;\r std::string pars;\r\r if (!channel || !user)\r return "";\r\r for (unsigned char mode = 'A'; mode <= 'z'; mode++)\r {\r unsigned char pos = (mode-65) | MASK_CHANNEL;\r ModeHandler* mh = modehandlers[pos];\r if ((mh) && (mh->GetNumParams(true)) && (mh->GetNumParams(false)))\r {\r ModePair ret;\r ret = mh->ModeSet(NULL, user, channel, user->nick);\r if ((ret.first) && (ret.second == user->nick))\r {\r pars.append(" ");\r pars.append(user->nick);\r types.push_back(mh->GetModeChar());\r }\r }\r }\r\r return types+pars;\r}\r\rstd::string ModeParser::ChanModes()\r{\r std::string type1; /* Listmodes EXCEPT those with a prefix */\r std::string type2; /* Modes that take a param when adding or removing */\r std::string type3; /* Modes that only take a param when adding */\r std::string type4; /* Modes that dont take a param */\r\r for (unsigned char mode = 'A'; mode <= 'z'; mode++)\r {\r if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))\r continue;\r\r unsigned char pos = (mode-65) | MASK_CHANNEL;\r /* One parameter when adding */\r if (modehandlers[pos])\r { \r if (modehandlers[pos]->GetNumParams(true))\r {\r if ((modehandlers[pos]->IsListMode()) && (!modehandlers[pos]->GetPrefix()))\r {\r type1 += modehandlers[pos]->GetModeChar();\r }\r else\r {\r /* ... and one parameter when removing */\r if (modehandlers[pos]->GetNumParams(false))\r {\r /* But not a list mode */\r if (!modehandlers[pos]->GetPrefix())\r {\r type2 += modehandlers[pos]->GetModeChar();\r }\r }\r else\r {\r /* No parameters when removing */\r type3 += modehandlers[pos]->GetModeChar();\r }\r }\r }\r else\r {\r type4 += modehandlers[pos]->GetModeChar();\r }\r }\r \r }\r\r return type1 + "," + type2 + "," + type3 + "," + type4;\r}\r\rbool ModeParser::PrefixComparison(prefixtype one, prefixtype two)\r{ \r return one.second > two.second;\r}\r\rstd::string ModeParser::BuildPrefixes()\r{\r std::string mletters;\r std::string mprefixes;\r pfxcontainer pfx;\r std::map<char,char> prefix_to_mode;\r\r for (unsigned char mode = 'A'; mode <= 'z'; mode++)\r {\r if ((!ServerInstance->Config->AllowHalfop) && (mode == 'h'))\r continue;\r\r unsigned char pos = (mode-65) | MASK_CHANNEL;\r\r if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix()))\r {\r pfx.push_back(std::make_pair<char,unsigned int>(modehandlers[pos]->GetPrefix(), modehandlers[pos]->GetPrefixRank()));\r prefix_to_mode[modehandlers[pos]->GetPrefix()] = modehandlers[pos]->GetModeChar();\r }\r }\r\r sort(pfx.begin(), pfx.end(), ModeParser::PrefixComparison);\r\r for (pfxcontainer::iterator n = pfx.begin(); n != pfx.end(); n++)\r {\r mletters = mletters + n->first;\r mprefixes = mprefixes + prefix_to_mode.find(n->first)->second;\r }\r\r return "(" + mprefixes + ")" + mletters;\r}\r\rbool ModeParser::AddModeWatcher(ModeWatcher* mw)\r{\r unsigned char mask = 0;\r unsigned char pos = 0;\r\r if (!mw)\r return false;\r\r if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))\r return false;\r\r mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;\r pos = (mw->GetModeChar()-65) | mask;\r\r modewatchers[pos].push_back(mw);\r\r return true;\r}\r\rbool ModeParser::DelModeWatcher(ModeWatcher* mw)\r{\r unsigned char mask = 0;\r unsigned char pos = 0;\r\r if (!mw)\r return false;\r\r if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))\r return false;\r\r mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;\r pos = (mw->GetModeChar()-65) | mask;\r\r ModeWatchIter a = find(modewatchers[pos].begin(),modewatchers[pos].end(),mw);\r\r if (a == modewatchers[pos].end())\r {\r return false;\r }\r\r modewatchers[pos].erase(a);\r\r return true;\r}\r\r/** This default implementation can remove simple user modes\r */\rvoid ModeHandler::RemoveMode(userrec* user)\r{\r char moderemove[MAXBUF];\r const char* parameters[] = { user->nick, moderemove };\r\r if (user->IsModeSet(this->GetModeChar()))\r {\r sprintf(moderemove,"-%c",this->GetModeChar());\r ServerInstance->Parser->CallHandler("MODE", parameters, 2, user);\r }\r}\r\r/** This default implementation can remove simple channel modes\r * (no parameters)\r */\rvoid ModeHandler::RemoveMode(chanrec* channel)\r{\r char moderemove[MAXBUF];\r const char* parameters[] = { channel->name, moderemove };\r\r if (channel->IsModeSet(this->GetModeChar()))\r {\r userrec* n = new userrec(ServerInstance);\r\r sprintf(moderemove,"-%c",this->GetModeChar());\r n->SetFd(FD_MAGIC_NUMBER);\r\r ServerInstance->SendMode(parameters, 2, n);\r\r delete n;\r }\r}\r\rModeParser::ModeParser(InspIRCd* Instance) : ServerInstance(Instance)\r{\r struct Initializer\r {\r char modechar;\r ModeHandler* handler;\r };\r\r Initializer modes[] = {\r { 's', new ModeChannelSecret(Instance) },\r { 'p', new ModeChannelPrivate(Instance) },\r { 'm', new ModeChannelModerated(Instance) },\r { 't', new ModeChannelTopicOps(Instance) },\r { 'n', new ModeChannelNoExternal(Instance) },\r { 'i', new ModeChannelInviteOnly(Instance) },\r { 'k', new ModeChannelKey(Instance) },\r { 'l', new ModeChannelLimit(Instance) },\r { 'b', new ModeChannelBan(Instance) },\r { 'o', new ModeChannelOp(Instance) },\r { 'h', new ModeChannelHalfOp(Instance) },\r { 'v', new ModeChannelVoice(Instance) },\r { 's', new ModeUserServerNotice(Instance) },\r { 'w', new ModeUserWallops(Instance) },\r { 'i', new ModeUserInvisible(Instance) },\r { 'o', new ModeUserOperator(Instance) },\r { 'n', new ModeUserServerNoticeMask(Instance) },\r { 0, NULL }\r };\r\r /* Clear mode list */\r memset(modehandlers, 0, sizeof(modehandlers));\r memset(modewatchers, 0, sizeof(modewatchers));\r\r /* Last parse string */\r LastParse.clear();\r\r /* Initialise the RFC mode letters */\r for (int index = 0; modes[index].modechar; index++)\r this->AddMode(modes[index].handler, modes[index].modechar);\r}\r
\ No newline at end of file
+/* +------------------------------------+
+ * | Inspire Internet Relay Chat Daemon |
+ * +------------------------------------+
+ *
+ * InspIRCd: (C) 2002-2009 InspIRCd Development Team
+ * See: http://wiki.inspircd.org/Credits
+ *
+ * This program is free but copyrighted software; see
+ * the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+/* $Core */
+
+#include "inspircd.h"
+#include "inspstring.h"
+
+/* +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"
+/* +w (see wallops) */
+#include "modes/umode_w.h"
+/* +i (invisible) */
+#include "modes/umode_i.h"
+/* +o (operator) */
+#include "modes/umode_o.h"
+/* +s (server notice masks) */
+#include "modes/umode_s.h"
+
+ModeHandler::ModeHandler(InspIRCd* Instance, char modeletter, int parameters_on, int parameters_off, bool listmode, ModeType type, bool operonly, char mprefix, char prefixrequired, TranslateType translate)
+ : ServerInstance(Instance), mode(modeletter), n_params_on(parameters_on), n_params_off(parameters_off), list(listmode), m_type(type), m_paramtype(translate), oper(operonly), prefix(mprefix), count(0), prefixneeded(prefixrequired)
+{
+}
+
+ModeHandler::~ModeHandler()
+{
+}
+
+bool ModeHandler::IsListMode()
+{
+ return list;
+}
+
+char ModeHandler::GetNeededPrefix()
+{
+ if (prefixneeded == '%' && !ServerInstance->Config->AllowHalfop)
+ return '@';
+ return prefixneeded;
+}
+
+void ModeHandler::SetNeededPrefix(char needsprefix)
+{
+ prefixneeded = needsprefix;
+}
+
+unsigned int ModeHandler::GetPrefixRank()
+{
+ return 0;
+}
+
+unsigned int ModeHandler::GetCount()
+{
+ return 0;
+}
+
+void ModeHandler::ChangeCount(int modifier)
+{
+ count += modifier;
+ ServerInstance->Logs->Log("MODE", DEBUG,"Change count for mode %c is now %d", mode, count);
+}
+
+ModeType ModeHandler::GetModeType()
+{
+ return m_type;
+}
+
+TranslateType ModeHandler::GetTranslateType()
+{
+ return m_paramtype;
+}
+
+bool ModeHandler::NeedsOper()
+{
+ return oper;
+}
+
+char ModeHandler::GetPrefix()
+{
+ return prefix;
+}
+
+int ModeHandler::GetNumParams(bool adding)
+{
+ return adding ? n_params_on : n_params_off;
+}
+
+char ModeHandler::GetModeChar()
+{
+ return mode;
+}
+
+std::string ModeHandler::GetUserParameter(User* user)
+{
+ return "";
+}
+
+ModeAction ModeHandler::OnModeChange(User*, User*, Channel*, std::string&, bool, bool)
+{
+ return MODEACTION_DENY;
+}
+
+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), "");
+ }
+}
+
+void ModeHandler::DisplayList(User*, Channel*)
+{
+}
+
+void ModeHandler::DisplayEmptyList(User*, Channel*)
+{
+}
+
+void ModeHandler::OnParameterMissing(User* user, User* dest, Channel* channel)
+{
+}
+
+bool ModeHandler::CheckTimeStamp(time_t theirs, time_t ours, const std::string&, const std::string&, Channel*)
+{
+ return (ours < theirs);
+}
+
+SimpleUserModeHandler::SimpleUserModeHandler(InspIRCd* Instance, char modeletter) : ModeHandler(Instance, modeletter, 0, 0, false, MODETYPE_USER, false)
+{
+}
+
+SimpleUserModeHandler::~SimpleUserModeHandler()
+{
+}
+
+SimpleChannelModeHandler::~SimpleChannelModeHandler()
+{
+}
+
+SimpleChannelModeHandler::SimpleChannelModeHandler(InspIRCd* Instance, char modeletter) : ModeHandler(Instance, modeletter, 0, 0, false, MODETYPE_CHANNEL, false)
+{
+}
+
+ModeAction SimpleUserModeHandler::OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool servermode)
+{
+ if (adding)
+ {
+ if (!dest->IsModeSet(this->GetModeChar()))
+ {
+ dest->SetMode(this->GetModeChar(),true);
+ return MODEACTION_ALLOW;
+ }
+ }
+ else
+ {
+ if (dest->IsModeSet(this->GetModeChar()))
+ {
+ dest->SetMode(this->GetModeChar(),false);
+ return MODEACTION_ALLOW;
+ }
+ }
+
+ return MODEACTION_DENY;
+}
+
+
+ModeAction SimpleChannelModeHandler::OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool servermode)
+{
+ if (adding)
+ {
+ if (!channel->IsModeSet(this->GetModeChar()))
+ {
+ channel->SetMode(this->GetModeChar(),true);
+ return MODEACTION_ALLOW;
+ }
+ }
+ else
+ {
+ if (channel->IsModeSet(this->GetModeChar()))
+ {
+ channel->SetMode(this->GetModeChar(),false);
+ return MODEACTION_ALLOW;
+ }
+ }
+
+ return MODEACTION_DENY;
+}
+
+ModeWatcher::ModeWatcher(InspIRCd* Instance, char modeletter, ModeType type) : ServerInstance(Instance), mode(modeletter), m_type(type)
+{
+}
+
+ModeWatcher::~ModeWatcher()
+{
+}
+
+char ModeWatcher::GetModeChar()
+{
+ return mode;
+}
+
+ModeType ModeWatcher::GetModeType()
+{
+ return m_type;
+}
+
+bool ModeWatcher::BeforeMode(User*, User*, Channel*, std::string&, bool, ModeType, bool)
+{
+ return true;
+}
+
+void ModeWatcher::AfterMode(User*, User*, Channel*, const std::string&, bool, ModeType, bool)
+{
+}
+
+User* ModeParser::SanityChecks(User *user, const char *dest, Channel *chan, int)
+{
+ User *d;
+ if ((!user) || (!dest) || (!chan) || (!*dest))
+ {
+ return NULL;
+ }
+ d = ServerInstance->FindNick(dest);
+ if (!d)
+ {
+ user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), dest);
+ return NULL;
+ }
+ return d;
+}
+
+const char* ModeParser::Grant(User *d,Channel *chan,int MASK)
+{
+ if (!chan)
+ return "";
+
+ UCListIter n = d->chans.find(chan);
+ if (n != d->chans.end())
+ {
+ if (n->second & MASK)
+ {
+ 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.c_str();
+ }
+ return "";
+}
+
+const char* ModeParser::Revoke(User *d,Channel *chan,int MASK)
+{
+ if (!chan)
+ return "";
+
+ UCListIter n = d->chans.find(chan);
+ if (n != d->chans.end())
+ {
+ if ((n->second & MASK) == 0)
+ {
+ return "";
+ }
+ n->second ^= MASK;
+ switch (MASK)
+ {
+ 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.c_str();
+ }
+ return "";
+}
+
+void ModeParser::DisplayCurrentModes(User *user, User* targetuser, Channel* targetchannel, const char* text)
+{
+ if (targetchannel)
+ {
+ /* Display channel's current mode string */
+ user->WriteNumeric(RPL_CHANNELMODEIS, "%s %s +%s",user->nick.c_str(), targetchannel->name.c_str(), targetchannel->ChanModes(targetchannel->HasUser(user)));
+ user->WriteNumeric(RPL_CHANNELCREATED, "%s %s %lu", user->nick.c_str(), targetchannel->name.c_str(), (unsigned long)targetchannel->age);
+ return;
+ }
+ else if (targetuser)
+ {
+ if (targetuser->Visibility && !targetuser->Visibility->VisibleTo(user))
+ {
+ user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), text);
+ return;
+ }
+
+ if (targetuser == user || user->HasPrivPermission("users/auspex"))
+ {
+ /* Display user's current mode string */
+ user->WriteNumeric(RPL_UMODEIS, "%s :+%s",targetuser->nick.c_str(),targetuser->FormatModes());
+ if (IS_OPER(targetuser))
+ user->WriteNumeric(RPL_SNOMASKIS, "%s +%s :Server notice mask", targetuser->nick.c_str(), targetuser->FormatNoticeMasks());
+ return;
+ }
+ else
+ {
+ user->WriteNumeric(ERR_USERSDONTMATCH, "%s :Can't change mode for other users", user->nick.c_str());
+ return;
+ }
+ }
+
+ /* No such nick/channel */
+ user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), text);
+ return;
+}
+
+void ModeParser::Process(const std::vector<std::string>& parameters, User *user, bool servermode)
+{
+ 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]);
+
+ LastParse.clear();
+ LastParseParams.clear();
+ LastParseTranslate.clear();
+
+ /* Special case for displaying the list for listmodes,
+ * e.g. MODE #chan b, or MODE #chan +b without a parameter
+ */
+ if ((targetchannel) && (parameters.size() == 2))
+ {
+ const char* mode = parameters[1].c_str();
+ int nonlistmodes_found = 0;
+
+ seq++;
+
+ mask = MASK_CHANNEL;
+
+ while (mode && *mode)
+ {
+ unsigned char mletter = *mode;
+
+ if (*mode == '+')
+ {
+ mode++;
+ continue;
+ }
+
+ /* Ensure the user doesnt request the same mode twice,
+ * so they cant flood themselves off out of idiocy.
+ */
+ if (sent[mletter] != seq)
+ {
+ sent[mletter] = seq;
+ }
+ else
+ {
+ mode++;
+ continue;
+ }
+
+ ModeHandler *mh = this->FindMode(*mode, MODETYPE_CHANNEL);
+ bool display = true;
+
+ if ((mh) && (mh->IsListMode()))
+ {
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, targetchannel, *mode, "", true, 0));
+ if (MOD_RESULT == ACR_DENY)
+ {
+ mode++;
+ continue;
+ }
+
+ if (!user->HasPrivPermission("channels/auspex"))
+ {
+ if (ServerInstance->Config->HideModeLists[mletter] && (targetchannel->GetStatus(user) < STATUS_HOP))
+ {
+ user->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s %s :Only half-operators and above may view the +%c list",user->nick.c_str(), targetchannel->name.c_str(), *mode++);
+ mh->DisplayEmptyList(user, targetchannel);
+ continue;
+ }
+ }
+
+ /** See below for a description of what craq this is :D
+ */
+ unsigned char handler_id = (*mode - 65) | mask;
+
+ 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;
+ }
+
+ if (display)
+ mh->DisplayList(user, targetchannel);
+ }
+ else
+ nonlistmodes_found++;
+
+ mode++;
+ }
+
+ /* We didnt have any modes that were non-list, we can return here */
+ if (!nonlistmodes_found)
+ return;
+ }
+
+ if (parameters.size() == 1)
+ {
+ this->DisplayCurrentModes(user, targetuser, targetchannel, parameters[0].c_str());
+ }
+ else if (parameters.size() > 1)
+ {
+ bool SkipAccessChecks = false;
+
+ if (targetchannel)
+ {
+ type = MODETYPE_CHANNEL;
+ mask = MASK_CHANNEL;
+
+ /* Extra security checks on channel modes
+ * (e.g. are they a (half)op?
+ */
+
+ if ((IS_LOCAL(user)) && (!ServerInstance->ULine(user->server)) && (!servermode))
+ {
+ /* Make modes that are being changed visible to OnAccessCheck */
+ LastParse = parameters[1];
+ /* We don't have halfop */
+ int MOD_RESULT = 0;
+ FOREACH_RESULT(I_OnAccessCheck,OnAccessCheck(user, NULL, targetchannel, AC_GENERAL_MODE));
+ LastParse.clear();
+ if (MOD_RESULT == ACR_DENY)
+ return;
+ SkipAccessChecks = (MOD_RESULT == ACR_ALLOW);
+ }
+ }
+ else if (targetuser)
+ {
+ type = MODETYPE_USER;
+ mask = MASK_USER;
+ if (user != targetuser && IS_LOCAL(user) && !ServerInstance->ULine(user->server))
+ {
+ user->WriteNumeric(ERR_USERSDONTMATCH, "%s :Can't change mode for other users", user->nick.c_str());
+ return;
+ }
+ }
+ else
+ {
+ /* No such nick/channel */
+ user->WriteNumeric(ERR_NOSUCHNICK, "%s %s :No such nick/channel",user->nick.c_str(), parameters[0].c_str());
+ 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;
+ unsigned int parameter_counter = 2; /* Index of first parameter */
+ unsigned int parameter_count = 0;
+ bool last_successful_state_change = false;
+ LastParseParams.push_back(output_sequence);
+ LastParseTranslate.push_back(TR_TEXT);
+
+ /* 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;
+
+ 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:
+
+ /**
+ * 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])
+ {
+ bool abort = false;
+
+ if (modehandlers[handler_id]->GetModeType() == type)
+ {
+ int MOD_RESULT = 0;
+
+ if (modehandlers[handler_id]->GetNumParams(adding))
+ {
+ /* This mode expects a parameter, do we have any parameters left in our list to use? */
+ if (parameter_counter < parameters.size())
+ {
+ parameter = parameters[parameter_counter++];
+
+ /* Yerk, invalid! */
+ if ((parameter.find(':') == 0) || (parameter.rfind(' ') != std::string::npos))
+ parameter.clear();
+ }
+ else
+ {
+ /* No parameter, continue to the next mode */
+ modehandlers[handler_id]->OnParameterMissing(user, targetuser, targetchannel);
+ continue;
+ }
+
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, targetchannel, modechar, parameter, adding, 1, servermode));
+ }
+ else
+ {
+ FOREACH_RESULT(I_OnRawMode, OnRawMode(user, targetchannel, modechar, "", adding, 0, servermode));
+ }
+
+ if (IS_LOCAL(user) && (MOD_RESULT == ACR_DENY))
+ continue;
+
+ if (!SkipAccessChecks && IS_LOCAL(user) && (MOD_RESULT != ACR_ALLOW))
+ {
+ /* Check access to this mode character */
+ if ((type == MODETYPE_CHANNEL) && (modehandlers[handler_id]->GetNeededPrefix()))
+ {
+ char needed = modehandlers[handler_id]->GetNeededPrefix();
+ ModeHandler* prefixmode = FindPrefix(needed);
+
+ /* If the mode defined by the handler is not '\0', but the handler for it
+ * cannot be found, they probably dont have the right module loaded to implement
+ * the prefix they want to compare the mode against, e.g. '&' for m_chanprotect.
+ * Revert to checking against the minimum core prefix, '%' or '@'.
+ */
+ if (needed && !prefixmode)
+ prefixmode = ServerInstance->Config->AllowHalfop ? FindPrefix('%') : FindPrefix('@');
+
+ unsigned int neededrank = prefixmode->GetPrefixRank();
+ /* Compare our rank on the channel against the rank of the required prefix,
+ * allow if >= ours. Because mIRC and xchat throw a tizz if the modes shown
+ * in NAMES(X) are not in rank order, we know the most powerful mode is listed
+ * first, so we don't need to iterate, we just look up the first instead.
+ */
+ std::string modestring = targetchannel->GetAllPrefixChars(user);
+ char ml = (modestring.empty() ? '\0' : modestring[0]);
+ ModeHandler* ourmode = FindPrefix(ml);
+ if (!ourmode || ourmode->GetPrefixRank() < neededrank)
+ {
+ /* Bog off */
+ user->WriteNumeric(ERR_CHANOPRIVSNEEDED, "%s %s :You must have channel privilege %c or above to %sset channel mode %c",
+ user->nick.c_str(), targetchannel->name.c_str(), needed, adding ? "" : "un", modechar);
+ 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, servermode) == false)
+ {
+ abort = true;
+ break;
+ }
+ /* A module whacked the parameter completely, and there was one. abort. */
+ if ((had_parameter) && (parameter.empty()))
+ {
+ abort = true;
+ break;
+ }
+ }
+
+ if (abort)
+ continue;
+
+ /* If it's disabled, they have to be an oper.
+ */
+ if (IS_LOCAL(user) && !IS_OPER(user) && ((type == MODETYPE_CHANNEL ? ServerInstance->Config->DisabledCModes : ServerInstance->Config->DisabledUModes)[modehandlers[handler_id]->GetModeChar() - 'A']))
+ {
+ user->WriteNumeric(ERR_NOPRIVILEGES, "%s :Permission Denied - %s mode %c has been locked by the administrator",
+ user->nick.c_str(),
+ type == MODETYPE_CHANNEL ? "channel" : "user",
+ modehandlers[handler_id]->GetModeChar());
+ 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 (adding && (IS_LOCAL(user)) && (modehandlers[handler_id]->NeedsOper()) && (!user->HasModePermission(modehandlers[handler_id]->GetModeChar(), type)))
+ {
+ if (IS_OPER(user))
+ {
+ user->WriteNumeric(ERR_NOPRIVILEGES, "%s :Permission Denied - Oper type %s does not have access to set %s mode %c",
+ user->nick.c_str(),
+ user->oper.c_str(),
+ type == MODETYPE_CHANNEL ? "channel" : "user",
+ modehandlers[handler_id]->GetModeChar());
+ }
+ else
+ {
+ user->WriteNumeric(ERR_NOPRIVILEGES, "%s :Permission Denied - Only operators may set %s mode %c",
+ user->nick.c_str(),
+ type == MODETYPE_CHANNEL ? "channel" : "user",
+ modehandlers[handler_id]->GetModeChar());
+ }
+ continue;
+ }
+
+ /* Call the handler for the mode */
+ ModeAction ma = modehandlers[handler_id]->OnModeChange(user, targetuser, targetchannel, parameter, adding, servermode);
+
+ 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;
+ }
+
+ 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;
+ LastParseParams.push_back(parameter);
+ LastParseTranslate.push_back(modehandlers[handler_id]->GetTranslateType());
+ 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, servermode);
+
+ /* Reset the state change flag */
+ state_change = false;
+
+ if ((output_sequence.length() + parameter_list.str().length() > 450) || (output_sequence.length() > 100)
+ || (parameter_count > ServerInstance->Config->Limits.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.c_str(), modechar);
+ }
+ break;
+ }
+ }
+
+ /* Was there at least one valid mode in the sequence? */
+ if (!output_sequence.empty())
+ {
+ LastParseParams[0] = output_sequence;
+ if (!user)
+ {
+ if (type == MODETYPE_CHANNEL)
+ {
+ targetchannel->WriteChannelWithServ(ServerInstance->Config->ServerName, "MODE %s %s%s", targetchannel->name.c_str(), output_sequence.c_str(), parameter_list.str().c_str());
+ this->LastParse = targetchannel->name;
+ }
+ else
+ {
+ targetuser->WriteServ("MODE %s %s%s",targetuser->nick.c_str(),output_sequence.c_str(), parameter_list.str().c_str());
+ this->LastParse = targetuser->nick;
+ }
+ }
+ else
+ {
+ if (type == MODETYPE_CHANNEL)
+ {
+ targetchannel->WriteChannel(user, "MODE %s %s%s", targetchannel->name.c_str(), output_sequence.c_str(), parameter_list.str().c_str());
+ FOREACH_MOD(I_OnMode,OnMode(user, targetchannel, TYPE_CHANNEL, LastParseParams, LastParseTranslate));
+ this->LastParse = targetchannel->name;
+ }
+ else
+ {
+ user->WriteTo(targetuser, "MODE %s %s%s", targetuser->nick.c_str(), output_sequence.c_str(), parameter_list.str().c_str());
+ FOREACH_MOD(I_OnMode,OnMode(user, targetuser, TYPE_USER, LastParseParams, LastParseTranslate));
+ this->LastParse = targetuser->nick;
+ }
+ }
+
+ LastParse.append(" ");
+ LastParse.append(output_sequence);
+ LastParse.append(parameter_list.str());
+ }
+ }
+}
+
+const std::string& ModeParser::GetLastParse()
+{
+ return LastParse;
+}
+
+void ModeParser::CleanMask(std::string &mask)
+{
+ 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_colons = mask.find("::"); /* Because ipv6 addresses are colon delimited -- double so it treats extban as nick */
+
+ if (mask.length() >= 2 && mask[1] == ':')
+ return; // if it's an extban, don't even try guess how it needs to be formed.
+
+ if ((pos_of_pling == std::string::npos) && (pos_of_at == std::string::npos))
+ {
+ /* Just a nick, or just a host - or clearly ipv6 (starting with :) */
+ if ((pos_of_dot == std::string::npos) && (pos_of_colons == std::string::npos) && mask[0] != ':')
+ {
+ /* 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;
+ }
+ }
+ else if ((pos_of_pling == std::string::npos) && (pos_of_at != std::string::npos))
+ {
+ /* Has an @ but no !, its a user@host */
+ mask = "*!" + mask;
+ }
+ else if ((pos_of_pling != std::string::npos) && (pos_of_at == std::string::npos))
+ {
+ /* Has a ! but no @, it must be a nick!ident */
+ mask.append("@*");
+ }
+}
+
+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;
+
+ 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::DelMode(ModeHandler* mh)
+{
+ 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;
+
+ /* Note: We can't stack here, as we have modes potentially being removed across many different channels.
+ * To stack here we have to make the algorithm slower. Discuss.
+ */
+ switch (mh->GetModeType())
+ {
+ case MODETYPE_USER:
+ for (user_hash::iterator i = ServerInstance->Users->clientlist->begin(); i != ServerInstance->Users->clientlist->end(); i++)
+ {
+ mh->RemoveMode(i->second);
+ }
+ 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;
+}
+
+ModeHandler* ModeParser::FindMode(unsigned const char modeletter, ModeType mt)
+{
+ 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;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_USER;
+
+ if (modehandlers[pos])
+ modestr[pointer++] = mode;
+ }
+ modestr[pointer++] = 0;
+ return modestr;
+}
+
+std::string ModeParser::ChannelModeList()
+{
+ char modestr[256];
+ int pointer = 0;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if (modehandlers[pos])
+ modestr[pointer++] = mode;
+ }
+ modestr[pointer++] = 0;
+ return modestr;
+}
+
+std::string ModeParser::ParaModeList()
+{
+ char modestr[256];
+ int pointer = 0;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if ((modehandlers[pos]) && (modehandlers[pos]->GetNumParams(true)))
+ modestr[pointer++] = mode;
+ }
+ modestr[pointer++] = 0;
+ return modestr;
+}
+
+ModeHandler* ModeParser::FindPrefix(unsigned const char pfxletter)
+{
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix() == pfxletter))
+ {
+ return modehandlers[pos];
+ }
+ }
+ return NULL;
+}
+
+std::string ModeParser::ModeString(User* user, Channel* channel, bool nick_suffix)
+{
+ std::string types;
+ std::string pars;
+
+ if (!channel || !user)
+ return "";
+
+ 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))
+ {
+ if (nick_suffix)
+ {
+ pars.append(" ");
+ pars.append(user->nick);
+ }
+ types.push_back(mh->GetModeChar());
+ }
+ }
+ }
+
+ if (nick_suffix)
+ return types+pars;
+ else
+ return types;
+}
+
+std::string ModeParser::GiveModeList(ModeMasks m)
+{
+ 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 */
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | m;
+ /* One parameter when adding */
+ if (modehandlers[pos])
+ {
+ if (modehandlers[pos]->GetNumParams(true))
+ {
+ if ((modehandlers[pos]->IsListMode()) && (!modehandlers[pos]->GetPrefix()))
+ {
+ type1 += modehandlers[pos]->GetModeChar();
+ }
+ else
+ {
+ /* ... and one parameter when removing */
+ if (modehandlers[pos]->GetNumParams(false))
+ {
+ /* But not a list mode */
+ if (!modehandlers[pos]->GetPrefix())
+ {
+ type2 += modehandlers[pos]->GetModeChar();
+ }
+ }
+ else
+ {
+ /* No parameters when removing */
+ type3 += modehandlers[pos]->GetModeChar();
+ }
+ }
+ }
+ else
+ {
+ type4 += modehandlers[pos]->GetModeChar();
+ }
+ }
+ }
+
+ 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<char,char> prefix_to_mode;
+
+ for (unsigned char mode = 'A'; mode <= 'z'; mode++)
+ {
+ unsigned char pos = (mode-65) | MASK_CHANNEL;
+
+ if ((modehandlers[pos]) && (modehandlers[pos]->GetPrefix()))
+ {
+ pfx.push_back(std::make_pair<char,unsigned int>(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;
+}
+
+bool ModeParser::AddModeWatcher(ModeWatcher* mw)
+{
+ unsigned char mask = 0;
+ unsigned char pos = 0;
+
+ if (!mw)
+ return false;
+
+ if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
+ return false;
+
+ mw->GetModeType() == MODETYPE_USER ? mask = MASK_USER : mask = MASK_CHANNEL;
+ pos = (mw->GetModeChar()-65) | mask;
+
+ modewatchers[pos].push_back(mw);
+
+ return true;
+}
+
+bool ModeParser::DelModeWatcher(ModeWatcher* mw)
+{
+ unsigned char mask = 0;
+ unsigned char pos = 0;
+
+ if (!mw)
+ return false;
+
+ if ((mw->GetModeChar() < 'A') || (mw->GetModeChar() > 'z'))
+ return false;
+
+ 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;
+ }
+
+ modewatchers[pos].erase(a);
+
+ return true;
+}
+
+/** This default implementation can remove simple user modes
+ */
+void ModeHandler::RemoveMode(User* user, irc::modestacker* stack)
+{
+ char moderemove[MAXBUF];
+ std::vector<std::string> parameters;
+
+ if (user->IsModeSet(this->GetModeChar()))
+ {
+ if (stack)
+ {
+ stack->Push(this->GetModeChar());
+ }
+ else
+ {
+ sprintf(moderemove,"-%c",this->GetModeChar());
+ parameters.push_back(user->nick);
+ parameters.push_back(moderemove);
+ ServerInstance->Modes->Process(parameters, ServerInstance->FakeClient, true);
+ }
+ }
+}
+
+/** This default implementation can remove simple channel modes
+ * (no parameters)
+ */
+void ModeHandler::RemoveMode(Channel* channel, irc::modestacker* stack)
+{
+ char moderemove[MAXBUF];
+ std::vector<std::string> parameters;
+
+ if (channel->IsModeSet(this->GetModeChar()))
+ {
+ if (stack)
+ {
+ stack->Push(this->GetModeChar());
+ }
+ else
+ {
+ sprintf(moderemove,"-%c",this->GetModeChar());
+ parameters.push_back(channel->name);
+ parameters.push_back(moderemove);
+ ServerInstance->SendMode(parameters, 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 ModeUserWallops(Instance),
+ new ModeUserInvisible(Instance),
+ new ModeUserOperator(Instance),
+ new ModeUserServerNoticeMask(Instance),
+ NULL
+ };
+
+ /* Clear mode handler list */
+ memset(modehandlers, 0, sizeof(modehandlers));
+
+ /* Last parse string */
+ LastParse.clear();
+
+ /* Initialise the RFC mode letters */
+ for (int index = 0; modes[index]; index++)
+ this->AddMode(modes[index]);
+
+ seq = 0;
+ memset(&sent, 0, sizeof(sent));
+}
projects / user / henk / code / inspircd.git / blobdiff