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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2014-2015 Attila Molnar <attilamolnar@hush.com>
*
* This file is part of InspIRCd. InspIRCd is free software: you can
* redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, version 2.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "inspircd.h"
#include "core_channel.h"
#include "invite.h"
#include "listmode.h"
class CoreModChannel : public Module, public CheckExemption::EventListener
{
Invite::APIImpl invapi;
CommandInvite cmdinvite;
CommandJoin cmdjoin;
CommandKick cmdkick;
CommandNames cmdnames;
CommandTopic cmdtopic;
ModeChannelBan banmode;
SimpleChannelModeHandler inviteonlymode;
ModeChannelKey keymode;
ModeChannelLimit limitmode;
SimpleChannelModeHandler moderatedmode;
SimpleChannelModeHandler noextmsgmode;
ModeChannelOp opmode;
SimpleChannelModeHandler privatemode;
SimpleChannelModeHandler secretmode;
SimpleChannelModeHandler topiclockmode;
ModeChannelVoice voicemode;
insp::flat_map<std::string, char> exemptions;
ModResult IsInvited(User* user, Channel* chan)
{
LocalUser* localuser = IS_LOCAL(user);
if ((localuser) && (invapi.IsInvited(localuser, chan)))
return MOD_RES_ALLOW;
return MOD_RES_PASSTHRU;
}
public:
CoreModChannel()
: CheckExemption::EventListener(this)
, invapi(this)
, cmdinvite(this, invapi)
, cmdjoin(this)
, cmdkick(this)
, cmdnames(this)
, cmdtopic(this)
, banmode(this)
, inviteonlymode(this, "inviteonly", 'i')
, keymode(this)
, limitmode(this)
, moderatedmode(this, "moderated", 'm')
, noextmsgmode(this, "noextmsg", 'n')
, opmode(this)
, privatemode(this, "private", 'p')
, secretmode(this, "secret", 's')
, topiclockmode(this, "topiclock", 't')
, voicemode(this)
{
}
void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
{
ConfigTag* optionstag = ServerInstance->Config->ConfValue("options");
Implementation events[] = { I_OnCheckKey, I_OnCheckLimit, I_OnCheckChannelBan };
if (optionstag->getBool("invitebypassmodes", true))
ServerInstance->Modules.Attach(events, this, sizeof(events)/sizeof(Implementation));
else
{
for (unsigned int i = 0; i < sizeof(events)/sizeof(Implementation); i++)
ServerInstance->Modules.Detach(events[i], this);
}
std::string current;
irc::spacesepstream defaultstream(optionstag->getString("exemptchanops"));
insp::flat_map<std::string, char> exempts;
while (defaultstream.GetToken(current))
{
std::string::size_type pos = current.find(':');
if (pos == std::string::npos || (pos + 2) > current.size())
throw ModuleException("Invalid exemptchanops value '" + current + "' at " + optionstag->getTagLocation());
const std::string restriction = current.substr(0, pos);
const char prefix = current[pos + 1];
ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Exempting prefix %c from %s", prefix, restriction.c_str());
exempts[restriction] = prefix;
}
exemptions.swap(exempts);
// In 2.0 we allowed limits of 0 to be set. This is non-standard behaviour
// and will be removed in the next major release.
limitmode.minlimit = optionstag->getBool("allowzerolimit", true) ? 0 : 1;
banmode.DoRehash();
}
void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
{
tokens["KEYLEN"] = ConvToStr(ModeChannelKey::maxkeylen);
// Build a map of limits to their mode character.
insp::flat_map<int, std::string> limits;
const ModeParser::ListModeList& listmodes = ServerInstance->Modes->GetListModes();
for (ModeParser::ListModeList::const_iterator iter = listmodes.begin(); iter != listmodes.end(); ++iter)
{
const unsigned int limit = (*iter)->GetLowerLimit();
limits[limit].push_back((*iter)->GetModeChar());
}
// Generate the MAXLIST token from the limits map.
std::string& buffer = tokens["MAXLIST"];
for (insp::flat_map<int, std::string>::const_iterator iter = limits.begin(); iter != limits.end(); ++iter)
{
if (!buffer.empty())
buffer.push_back(',');
buffer.append(iter->second);
buffer.push_back(':');
buffer.append(ConvToStr(iter->first));
}
}
void OnPostJoin(Membership* memb) CXX11_OVERRIDE
{
Channel* const chan = memb->chan;
LocalUser* const localuser = IS_LOCAL(memb->user);
if (localuser)
{
// Remove existing invite, if any
invapi.Remove(localuser, chan);
if (chan->topic.length())
Topic::ShowTopic(localuser, chan);
// Show all members of the channel, including invisible (+i) users
cmdnames.SendNames(localuser, chan, true);
}
}
ModResult OnCheckKey(User* user, Channel* chan, const std::string& keygiven) CXX11_OVERRIDE
{
// Hook only runs when being invited bypasses +bkl
return IsInvited(user, chan);
}
ModResult OnCheckChannelBan(User* user, Channel* chan) CXX11_OVERRIDE
{
// Hook only runs when being invited bypasses +bkl
return IsInvited(user, chan);
}
ModResult OnCheckLimit(User* user, Channel* chan) CXX11_OVERRIDE
{
// Hook only runs when being invited bypasses +bkl
return IsInvited(user, chan);
}
ModResult OnCheckInvite(User* user, Channel* chan) CXX11_OVERRIDE
{
// Hook always runs
return IsInvited(user, chan);
}
void OnUserDisconnect(LocalUser* user) CXX11_OVERRIDE
{
invapi.RemoveAll(user);
}
void OnChannelDelete(Channel* chan) CXX11_OVERRIDE
{
// Make sure the channel won't appear in invite lists from now on, don't wait for cull to unset the ext
invapi.RemoveAll(chan);
}
ModResult OnCheckExemption(User* user, Channel* chan, const std::string& restriction) CXX11_OVERRIDE
{
if (!exemptions.count(restriction))
return MOD_RES_PASSTHRU;
unsigned int mypfx = chan->GetPrefixValue(user);
char minmode = exemptions[restriction];
PrefixMode* mh = ServerInstance->Modes->FindPrefixMode(minmode);
if (mh && mypfx >= mh->GetPrefixRank())
return MOD_RES_ALLOW;
if (mh || minmode == '*')
return MOD_RES_DENY;
return MOD_RES_PASSTHRU;
}
void Prioritize() CXX11_OVERRIDE
{
ServerInstance->Modules.SetPriority(this, I_OnPostJoin, PRIORITY_FIRST);
}
Version GetVersion() CXX11_OVERRIDE
{
return Version("Provides the INVITE, JOIN, KICK, NAMES, and TOPIC commands", VF_VENDOR|VF_CORE);
}
};
MODULE_INIT(CoreModChannel)
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