-/* +------------------------------------+
- * | 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 */
+// Not in a class due to circular dependancy hell.
+static std::string permchannelsconf;
+static bool WriteDatabase()
+{
+ FILE *f;
+
+ if (permchannelsconf.empty())
+ {
+ // Fake success.
+ return true;
+ }
+
+ std::string tempname = permchannelsconf + ".tmp";
+
+ /*
+ * We need to perform an atomic write so as not to fuck things up.
+ * So, let's write to a temporary file, flush and sync the FD, then rename the file..
+ * -- w00t
+ */
+ f = fopen(tempname.c_str(), "w");
+ if (!f)
+ {
+ ServerInstance->Logs->Log("m_permchannels",LOG_DEFAULT, "permchannels: Cannot create database! %s (%d)", strerror(errno), errno);
+ ServerInstance->SNO->WriteToSnoMask('a', "database: cannot create new db: %s (%d)", strerror(errno), errno);
+ return false;
+ }
+
+ fputs("# Permchannels DB\n# This file is autogenerated; any changes will be overwritten!\n<config format=\"compat\">\n", f);
+ // Now, let's write.
+ for (chan_hash::const_iterator i = ServerInstance->chanlist->begin(); i != ServerInstance->chanlist->end(); i++)
+ {
+ Channel* chan = i->second;
+ if (!chan->IsModeSet('P'))
+ continue;
+
+ char line[1024];
+ const char* items[] =
+ {
+ "<permchannels channel=",
+ chan->name.c_str(),
+ " topic=",
+ chan->topic.c_str(),
+ " modes=",
+ chan->ChanModes(true),
+ ">\n"
+ };
+
+ int lpos = 0, item = 0, ipos = 0;
+ while (lpos < 1022 && item < 7)
+ {
+ char c = items[item][ipos++];
+ if (c == 0)
+ {
+ // end of this string; hop to next string, insert a quote
+ item++;
+ ipos = 0;
+ c = '"';
+ }
+ else if (c == '\\' || c == '"')
+ {
+ line[lpos++] = '\\';
+ }
+ line[lpos++] = c;
+ }
+ line[--lpos] = 0;
+ fputs(line, f);
+ }
+
+ int write_error = 0;
+ write_error = ferror(f);
+ write_error |= fclose(f);
+ if (write_error)
+ {
+ ServerInstance->Logs->Log("m_permchannels",LOG_DEFAULT, "permchannels: 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;
+ }
+
+#ifdef _WIN32
+ if (remove(permchannelsconf.c_str()))
+ {
+ ServerInstance->Logs->Log("m_permchannels",LOG_DEFAULT, "permchannels: 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(tempname.c_str(), permchannelsconf.c_str()) < 0)
+ {
+ ServerInstance->Logs->Log("m_permchannels",LOG_DEFAULT, "permchannels: 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;
+}
+
+
/** 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 ¶meter, bool adding)
{
if (adding)
{
{
if (channel->IsModeSet('P'))
{
- channel->SetMode('P',false);
-
+ channel->SetMode(this,false);
if (channel->GetUserCounter() == 0)
- delete channel;
+ {
+ channel->DelUser(ServerInstance->FakeClient);
+ }
return MODEACTION_ALLOW;
}
}
class ModulePermanentChannels : public Module
{
- PermChannel *p;
+ PermChannel p;
+ bool dirty;
public:
- ModulePermanentChannels(InspIRCd* Me) : Module(Me)
+ ModulePermanentChannels() : p(this), dirty(false)
+ {
+ }
+
+ void init()
+ {
+ 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()
{
- p = new PermChannel(ServerInstance);
- if (!ServerInstance->Modes->AddMode(p))
+ /*
+ * 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(I_OnChannelDelete, 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()
+ virtual void OnRehash(User *user)
{
- 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("m_permchannels", 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(NULL, topic, true);
+
+ /*
+ * 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("m_permchannels", LOG_DEBUG, "Added %s with topic %s", channel.c_str(), topic.c_str());
if (modes.empty())
continue;
}
}
+ virtual ModResult OnRawMode(User* user, Channel* chan, const char mode, const std::string ¶m, bool adding, int pcnt)
+ {
+ if (chan && (chan->IsModeSet('P') || mode == 'P'))
+ dirty = true;
+
+ return MOD_RES_PASSTHRU;
+ }
+
+ virtual void OnPostTopicChange(User*, Channel *c, const std::string&)
+ {
+ if (c->IsModeSet('P'))
+ dirty = true;
+ }
+
+ void OnBackgroundTimer(time_t)
+ {
+ if (dirty)
+ WriteDatabase();
+ 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("m_permchannels", LOG_DEFAULT, "Error loading permchannels database: " + std::string(e.GetReason()));
+ }
+ }
+ }
+
virtual Version GetVersion()
{
- 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)
+ virtual ModResult OnChannelPreDelete(Channel *c)
{
if (c->IsModeSet('P'))
- return 1;
+ return MOD_RES_DENY;
- return 0;
+ return MOD_RES_PASSTHRU;
}
};
projects / user / henk / code / inspircd.git / blobdiff