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Diffstat (limited to 'src/modules/m_topiclock.cpp')
| -rw-r--r-- | src/modules/m_topiclock.cpp | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/src/modules/m_topiclock.cpp b/src/modules/m_topiclock.cpp new file mode 100644 index 000000000..e17fac1a2 --- /dev/null +++ b/src/modules/m_topiclock.cpp @@ -0,0 +1,179 @@ +/* + * InspIRCd -- Internet Relay Chat Daemon + * + * Copyright (C) 2012 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/>. + */ + +/* ModDesc: Implements server-side topic locks and the server-to-server command SVSTOPIC */ + +#include "inspircd.h" + +class CommandSVSTOPIC : public Command +{ + public: + CommandSVSTOPIC(Module* Creator) + : Command(Creator, "SVSTOPIC", 1, 4) + { + flags_needed = FLAG_SERVERONLY; + } + + CmdResult Handle(const std::vector<std::string> ¶meters, User *user) + { + if (!ServerInstance->ULine(user->server)) + { + // Ulines only + return CMD_FAILURE; + } + + Channel* chan = ServerInstance->FindChan(parameters[0]); + if (!chan) + return CMD_FAILURE; + + if (parameters.size() == 4) + { + // 4 parameter version, set all topic data on the channel to the ones given in the parameters + time_t topicts = ConvToInt(parameters[1]); + if (!topicts) + { + ServerInstance->Logs->Log("m_topiclock", DEFAULT, "Received SVSTOPIC with a 0 topicts, dropped."); + return CMD_INVALID; + } + + std::string newtopic; + newtopic.assign(parameters[3], 0, ServerInstance->Config->Limits.MaxTopic); + bool topics_differ = (chan->topic != newtopic); + if ((topics_differ) || (chan->topicset != topicts) || (chan->setby != parameters[2])) + { + // Update when any parameter differs + chan->topicset = topicts; + chan->setby.assign(parameters[2], 0, 127); + chan->topic = newtopic; + // Send TOPIC to clients only if the actual topic has changed, be silent otherwise + if (topics_differ) + chan->WriteChannel(user, "TOPIC %s :%s", chan->name.c_str(), chan->topic.c_str()); + } + } + else + { + // 1 parameter version, nuke the topic + bool topic_empty = chan->topic.empty(); + if (!topic_empty || !chan->setby.empty()) + { + chan->topicset = 0; + chan->setby.clear(); + chan->topic.clear(); + if (!topic_empty) + chan->WriteChannel(user, "TOPIC %s :", chan->name.c_str()); + } + } + + return CMD_SUCCESS; + } + + RouteDescriptor GetRouting(User* user, const std::vector<std::string>& parameters) + { + return ROUTE_BROADCAST; + } +}; + +class FlagExtItem : public ExtensionItem +{ + public: + FlagExtItem(const std::string& key, Module* owner) + : ExtensionItem(key, owner) + { + } + + virtual ~FlagExtItem() + { + } + + bool get(const Extensible* container) const + { + return (get_raw(container) != NULL); + } + + std::string serialize(SerializeFormat format, const Extensible* container, void* item) const + { + if (format == FORMAT_USER) + return "true"; + + return "1"; + } + + void unserialize(SerializeFormat format, Extensible* container, const std::string& value) + { + if (value == "1") + set_raw(container, this); + else + unset_raw(container); + } + + void set(Extensible* container, bool value) + { + if (value) + set_raw(container, this); + else + unset_raw(container); + } + + void unset(Extensible* container) + { + unset_raw(container); + } + + void free(void* item) + { + // nothing to free + } +}; + +class ModuleTopicLock : public Module +{ + CommandSVSTOPIC cmd; + FlagExtItem topiclock; + + public: + ModuleTopicLock() + : cmd(this), topiclock("topiclock", this) + { + } + + void init() + { + ServerInstance->Modules->AddService(cmd); + ServerInstance->Modules->AddService(topiclock); + ServerInstance->Modules->Attach(I_OnPreTopicChange, this); + } + + ModResult OnPreTopicChange(User* user, Channel* chan, const std::string &topic) + { + // Only fired for local users currently, but added a check anyway + if ((IS_LOCAL(user)) && (topiclock.get(chan))) + { + user->WriteNumeric(744, "%s :TOPIC cannot be changed due to topic lock being active on the channel", chan->name.c_str()); + return MOD_RES_DENY; + } + + return MOD_RES_PASSTHRU; + } + + Version GetVersion() + { + return Version("Implements server-side topic locks and the server-to-server command SVSTOPIC", VF_COMMON | VF_VENDOR); + } +}; + +MODULE_INIT(ModuleTopicLock) |