-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008-2009 Robin Burchell <robin+git@viroteck.net>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * 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"
-/* $ModDesc: Provides support for channel mode +P to provide permanent channels */
+#include "inspircd.h"
+#include <fstream>
/** Handles the +P channel mode
class PermChannel : public ModeHandler
{
public:
- PermChannel(InspIRCd* Instance) : ModeHandler(Instance, 'P', 0, 0, false, MODETYPE_CHANNEL, false) { }
+ PermChannel(Module* Creator)
+ : ModeHandler(Creator, "permanent", 'P', PARAM_NONE, MODETYPE_CHANNEL)
+ {
+ oper = true;
+ }
- ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string ¶meter, bool adding, bool)
+ ModeAction OnModeChange(User* source, User* dest, Channel* channel, std::string& parameter, bool adding)
{
- if (adding)
- {
- if (!channel->IsModeSet('P'))
- {
- channel->SetMode('P',true);
- return MODEACTION_ALLOW;
- }
- }
- else
- {
- if (channel->IsModeSet('P'))
- {
- channel->SetMode('P',false);
+ if (adding == channel->IsModeSet(this))
+ return MODEACTION_DENY;
- if (channel->GetUserCounter() == 0)
- delete channel;
- return MODEACTION_ALLOW;
- }
- }
+ channel->SetMode(this, adding);
+ if (!adding)
+ channel->CheckDestroy();
- return MODEACTION_DENY;
+ return MODEACTION_ALLOW;
}
};
+// Not in a class due to circular dependancy hell.
+static std::string permchannelsconf;
+static bool WriteDatabase(PermChannel& permchanmode)
+{
+ /*
+ * We need to perform an atomic write so as not to fuck things up.
+ * So, let's write to a temporary file, flush it, then rename the file..
+ * -- w00t
+ */
+
+ // If the user has not specified a configuration file then we don't write one.
+ if (permchannelsconf.empty())
+ return true;
+
+ std::string permchannelsnewconf = permchannelsconf + ".tmp";
+ std::ofstream stream(permchannelsnewconf.c_str());
+ if (!stream.is_open())
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Cannot create database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "database: cannot create new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ stream << "# This file is automatically generated by m_permchannels. Any changes will be overwritten." << std::endl
+ << "<config format=\"xml\">" << std::endl;
+
+ for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)
+ {
+ Channel* chan = i->second;
+ if (!chan->IsModeSet(permchanmode))
+ continue;
+
+ stream << "<permchannels channel=\"" << ServerConfig::Escape(chan->name)
+ << "\" topic=\"" << ServerConfig::Escape(chan->topic)
+ << "\" modes=\"" << ServerConfig::Escape(chan->ChanModes(true))
+ << "\">" << std::endl;
+ }
+
+ if (stream.fail())
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Cannot write to new database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "database: cannot write to new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+ stream.close();
+
+#ifdef _WIN32
+ if (remove(permchannelsconf.c_str()))
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Cannot remove old database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "database: cannot remove old database: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+#endif
+ // Use rename to move temporary to new db - this is guarenteed not to fuck up, even in case of a crash.
+ if (rename(permchannelsnewconf.c_str(), permchannelsconf.c_str()) < 0)
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Cannot move new to old database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "database: cannot replace old with new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ return true;
+}
+
class ModulePermanentChannels : public Module
{
- PermChannel *p;
+ PermChannel p;
+ bool dirty;
public:
- ModulePermanentChannels(InspIRCd* Me) : Module(Me)
+ ModulePermanentChannels() : p(this), dirty(false)
+ {
+ }
+
+ void init() CXX11_OVERRIDE
{
- p = new PermChannel(ServerInstance);
- if (!ServerInstance->Modes->AddMode(p))
+ ServerInstance->Modules->AddService(p);
+ Implementation eventlist[] = { I_OnChannelPreDelete, I_OnPostTopicChange, I_OnRawMode, I_OnRehash, I_OnBackgroundTimer };
+ ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
+
+ OnRehash(NULL);
+ }
+
+ CullResult cull()
+ {
+ /*
+ * DelMode can't remove the +P mode on empty channels, or it will break
+ * merging modes with remote servers. Remove the empty channels now as
+ * we know this is not the case.
+ */
+ chan_hash::iterator iter = ServerInstance->chanlist->begin();
+ while (iter != ServerInstance->chanlist->end())
{
- delete p;
- throw ModuleException("Could not add new modes!");
+ Channel* c = iter->second;
+ if (c->GetUserCounter() == 0)
+ {
+ chan_hash::iterator at = iter;
+ iter++;
+ FOREACH_MOD(OnChannelDelete, (c));
+ ServerInstance->chanlist->erase(at);
+ ServerInstance->GlobalCulls.AddItem(c);
+ }
+ else
+ iter++;
}
- Implementation eventlist[] = { I_OnChannelPreDelete };
- ServerInstance->Modules->Attach(eventlist, this, 1);
-
- OnRehash(NULL, "");
+ ServerInstance->Modes->DelMode(&p);
+ return Module::cull();
}
- virtual ~ModulePermanentChannels()
+ void OnRehash(User *user) CXX11_OVERRIDE
{
- ServerInstance->Modes->DelMode(p);
- delete p;
+ permchannelsconf = ServerInstance->Config->ConfValue("permchanneldb")->getString("filename");
}
- virtual void OnRehash(User *user, const std::string ¶meter)
+ void LoadDatabase()
{
/*
* Process config-defined list of permanent channels.
* -- w00t
*/
- ConfigReader MyConf(ServerInstance);
- for (int i = 0; i < MyConf.Enumerate("permchannels"); i++)
+ ConfigTagList permchannels = ServerInstance->Config->ConfTags("permchannels");
+ for (ConfigIter i = permchannels.first; i != permchannels.second; ++i)
{
- std::string channel = MyConf.ReadValue("permchannels", "channel", i);
- std::string topic = MyConf.ReadValue("permchannels", "topic", i);
- std::string modes = MyConf.ReadValue("permchannels", "modes", i);
+ ConfigTag* tag = i->second;
+ std::string channel = tag->getString("channel");
+ std::string topic = tag->getString("topic");
+ std::string modes = tag->getString("modes");
- if (channel.empty() || topic.empty())
+ if (channel.empty())
{
- ServerInstance->Logs->Log("blah", DEBUG, "Malformed permchannels tag with empty topic or channel name.");
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Malformed permchannels tag with empty channel name.");
continue;
}
if (!c)
{
- c = new Channel(ServerInstance, channel, ServerInstance->Time());
- c->SetTopic(NULL, topic, true);
- ServerInstance->Logs->Log("blah", DEBUG, "Added %s with topic %s", channel.c_str(), topic.c_str());
+ c = new Channel(channel, ServerInstance->Time());
+ if (!topic.empty())
+ {
+ c->SetTopic(ServerInstance->FakeClient, topic);
+
+ /*
+ * Due to the way protocol works in 1.2, we need to hack the topic TS in such a way that this
+ * topic will always win over others.
+ *
+ * This is scheduled for (proper) fixing in a later release, and can be removed at a later date.
+ */
+ c->topicset = 42;
+ }
+ ServerInstance->Logs->Log(MODNAME, LOG_DEBUG, "Added %s with topic %s", channel.c_str(), topic.c_str());
if (modes.empty())
continue;
}
}
- virtual Version GetVersion()
+ ModResult OnRawMode(User* user, Channel* chan, const char mode, const std::string ¶m, bool adding, int pcnt) CXX11_OVERRIDE
+ {
+ if (chan && (chan->IsModeSet(p) || mode == p.GetModeChar()))
+ dirty = true;
+
+ return MOD_RES_PASSTHRU;
+ }
+
+ void OnPostTopicChange(User*, Channel *c, const std::string&) CXX11_OVERRIDE
+ {
+ if (c->IsModeSet(p))
+ dirty = true;
+ }
+
+ void OnBackgroundTimer(time_t) CXX11_OVERRIDE
+ {
+ if (dirty)
+ WriteDatabase(p);
+ dirty = false;
+ }
+
+ void Prioritize()
+ {
+ // XXX: Load the DB here because the order in which modules are init()ed at boot is
+ // alphabetical, this means we must wait until all modules have done their init()
+ // to be able to set the modes they provide (e.g.: m_stripcolor is inited after us)
+ // Prioritize() is called after all module initialization is complete, consequently
+ // all modes are available now
+
+ static bool loaded = false;
+ if (loaded)
+ return;
+
+ loaded = true;
+
+ // Load only when there are no linked servers - we set the TS of the channels we
+ // create to the current time, this can lead to desync because spanningtree has
+ // no way of knowing what we do
+ ProtoServerList serverlist;
+ ServerInstance->PI->GetServerList(serverlist);
+ if (serverlist.size() < 2)
+ {
+ try
+ {
+ LoadDatabase();
+ }
+ catch (CoreException& e)
+ {
+ ServerInstance->Logs->Log(MODNAME, LOG_DEFAULT, "Error loading permchannels database: " + std::string(e.GetReason()));
+ }
+ }
+ }
+
+ Version GetVersion() CXX11_OVERRIDE
{
- return Version("$Id$",VF_COMMON|VF_VENDOR,API_VERSION);
+ return Version("Provides support for channel mode +P to provide permanent channels",VF_VENDOR);
}
- virtual int OnChannelPreDelete(Channel *c)
+ ModResult OnChannelPreDelete(Channel *c) CXX11_OVERRIDE
{
- if (c->IsModeSet('P'))
- return 1;
+ if (c->IsModeSet(p))
+ return MOD_RES_DENY;
- return 0;
+ return MOD_RES_PASSTHRU;
}
};
projects / user / henk / code / inspircd.git / blobdiff