-/* +------------------------------------+\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 "channels.h"\r#include "modules.h"\r#include "hashcomp.h"\r#include "wildcard.h"\r\r/* $ModDesc: Implements config tags which allow blocking of joins to channels */\r\rclass ModuleDenyChannels : public Module\r{\r private:\r\r \r ConfigReader *Conf;\r\r public:\r ModuleDenyChannels(InspIRCd* Me) : Module(Me)\r {\r \r Conf = new ConfigReader(ServerInstance);\r }\r \r virtual void OnRehash(userrec* user, const std::string ¶m)\r {\r DELETE(Conf);\r Conf = new ConfigReader(ServerInstance);\r }\r\r virtual ~ModuleDenyChannels()\r {\r DELETE(Conf);\r }\r \r virtual Version GetVersion()\r {\r return Version(1,1,0,1,VF_VENDOR,API_VERSION);\r }\r\r void Implements(char* List)\r {\r List[I_OnUserPreJoin] = List[I_OnRehash] = 1;\r }\r\r virtual int OnUserPreJoin(userrec* user, chanrec* chan, const char* cname, std::string &privs)\r {\r for (int j =0; j < Conf->Enumerate("badchan"); j++)\r {\r if (match(cname, Conf->ReadValue("badchan","name",j).c_str()))\r {\r if (IS_OPER(user) && Conf->ReadFlag("badchan","allowopers",j))\r {\r return 0;\r }\r else\r {\r std::string reason = Conf->ReadValue("badchan","reason",j);\r user->WriteServ("926 %s %s :Channel %s is forbidden: %s",user->nick,cname,cname,reason.c_str());\r return 1;\r }\r }\r }\r return 0;\r }\r};\r\rMODULE_INIT(ModuleDenyChannels)\r
\ No newline at end of file
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
+ *
+ * Copyright (C) 2019 Matt Schatz <genius3000@g3k.solutions>
+ * Copyright (C) 2013, 2018 Sadie Powell <sadie@witchery.services>
+ * Copyright (C) 2012-2013 Attila Molnar <attilamolnar@hush.com>
+ * Copyright (C) 2012 Robby <robby@chatbelgie.be>
+ * Copyright (C) 2009 Uli Schlachter <psychon@inspircd.org>
+ * Copyright (C) 2009 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
+ * Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
+ * Copyright (C) 2005, 2007, 2010 Craig Edwards <brain@inspircd.org>
+ *
+ * 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"
+
+enum
+{
+ // InspIRCd-specific.
+ ERR_BADCHANNEL = 926
+};
+
+struct BadChannel
+{
+ bool allowopers;
+ std::string name;
+ std::string reason;
+ std::string redirect;
+
+ BadChannel(const std::string& Name, const std::string& Redirect, const std::string& Reason, bool AllowOpers)
+ : allowopers(AllowOpers)
+ , name(Name)
+ , reason(Reason)
+ , redirect(Redirect)
+ {
+ }
+};
+
+typedef std::vector<BadChannel> BadChannels;
+typedef std::vector<std::string> GoodChannels;
+
+class ModuleDenyChannels : public Module
+{
+ private:
+ BadChannels badchannels;
+ GoodChannels goodchannels;
+ UserModeReference antiredirectmode;
+ ChanModeReference redirectmode;
+
+ public:
+ ModuleDenyChannels()
+ : antiredirectmode(this, "antiredirect")
+ , redirectmode(this, "redirect")
+ {
+ }
+
+ void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
+ {
+ GoodChannels goodchans;
+ ConfigTagList tags = ServerInstance->Config->ConfTags("goodchan");
+ for (ConfigIter iter = tags.first; iter != tags.second; ++iter)
+ {
+ ConfigTag* tag = iter->second;
+
+ // Ensure that we have the <goodchan:name> parameter.
+ const std::string name = tag->getString("name");
+ if (name.empty())
+ throw ModuleException("<goodchan:name> is a mandatory field, at " + tag->getTagLocation());
+
+ goodchans.push_back(name);
+ }
+
+ BadChannels badchans;
+ tags = ServerInstance->Config->ConfTags("badchan");
+ for (ConfigIter i = tags.first; i != tags.second; ++i)
+ {
+ ConfigTag* tag = i->second;
+
+ // Ensure that we have the <badchan:name> parameter.
+ const std::string name = tag->getString("name");
+ if (name.empty())
+ throw ModuleException("<badchan:name> is a mandatory field, at " + tag->getTagLocation());
+
+ // Ensure that we have the <badchan:reason> parameter.
+ const std::string reason = tag->getString("reason");
+ if (reason.empty())
+ throw ModuleException("<badchan:reason> is a mandatory field, at " + tag->getTagLocation());
+
+ const std::string redirect = tag->getString("redirect");
+ if (!redirect.empty())
+ {
+ // Ensure that <badchan:redirect> contains a channel name.
+ if (!ServerInstance->IsChannel(redirect))
+ throw ModuleException("<badchan:redirect> is not a valid channel name, at " + tag->getTagLocation());
+
+ // We defer the rest of the validation of the redirect channel until we have
+ // finished parsing all of the badchans.
+ }
+
+ badchans.push_back(BadChannel(name, redirect, reason, tag->getBool("allowopers")));
+ }
+
+ // Now we have all of the badchan information recorded we can check that all redirect
+ // channels can actually be redirected to.
+ for (BadChannels::const_iterator i = badchans.begin(); i != badchans.end(); ++i)
+ {
+ const BadChannel& badchan = *i;
+
+ // If there is no redirect channel we have nothing to do.
+ if (badchan.redirect.empty())
+ continue;
+
+ // If the redirect channel is whitelisted then it is okay.
+ bool whitelisted = false;
+ for (GoodChannels::const_iterator j = goodchans.begin(); j != goodchans.end(); ++j)
+ {
+ if (InspIRCd::Match(badchan.redirect, *j))
+ {
+ whitelisted = true;
+ break;
+ }
+ }
+
+ if (whitelisted)
+ continue;
+
+ // If the redirect channel is not blacklisted then it is okay.
+ for (BadChannels::const_iterator j = badchans.begin(); j != badchans.end(); ++j)
+ if (InspIRCd::Match(badchan.redirect, j->name))
+ throw ModuleException("<badchan:redirect> cannot be a blacklisted channel name");
+ }
+
+ // The config file contained no errors so we can apply the new configuration.
+ badchannels.swap(badchans);
+ goodchannels.swap(goodchans);
+ }
+
+ Version GetVersion() CXX11_OVERRIDE
+ {
+ return Version("Allows the server administrator to prevent users from joining channels matching a glob.", VF_VENDOR);
+ }
+
+
+ ModResult OnUserPreJoin(LocalUser* user, Channel* chan, const std::string& cname, std::string& privs, const std::string& keygiven) CXX11_OVERRIDE
+ {
+ for (BadChannels::const_iterator j = badchannels.begin(); j != badchannels.end(); ++j)
+ {
+ const BadChannel& badchan = *j;
+
+ // If the channel does not match the current entry we have nothing else to do.
+ if (!InspIRCd::Match(cname, badchan.name))
+ continue;
+
+ // If the user is an oper and opers are allowed to enter this blacklisted channel
+ // then allow the join.
+ if (user->IsOper() && badchan.allowopers)
+ return MOD_RES_PASSTHRU;
+
+ // If the channel matches a whitelist then allow the join.
+ for (GoodChannels::const_iterator i = goodchannels.begin(); i != goodchannels.end(); ++i)
+ if (InspIRCd::Match(cname, *i))
+ return MOD_RES_PASSTHRU;
+
+ // If there is no redirect chan, the user has enabled the antiredirect mode, or
+ // the target channel redirects elsewhere we just tell the user and deny the join.
+ Channel* target = NULL;
+ if (badchan.redirect.empty() || user->IsModeSet(antiredirectmode)
+ || ((target = ServerInstance->FindChan(badchan.redirect)) && target->IsModeSet(redirectmode)))
+ {
+ user->WriteNumeric(ERR_BADCHANNEL, cname, InspIRCd::Format("Channel %s is forbidden: %s",
+ cname.c_str(), badchan.reason.c_str()));
+ return MOD_RES_DENY;
+ }
+
+ // Redirect the user to the target channel.
+ user->WriteNumeric(ERR_BADCHANNEL, cname, InspIRCd::Format("Channel %s is forbidden, redirecting to %s: %s",
+ cname.c_str(), badchan.redirect.c_str(), badchan.reason.c_str()));
+ Channel::JoinUser(user, badchan.redirect);
+ return MOD_RES_DENY;
+ }
+ return MOD_RES_PASSTHRU;
+ }
+};
+
+MODULE_INIT(ModuleDenyChannels)
projects / user / henk / code / inspircd.git / blobdiff