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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2005-2007 Craig Edwards <craigedwards@brainbox.cc>
* Copyright (C) 2007 Dennis Friis <peavey@inspircd.org>
* Copyright (C) 2007 Robin Burchell <robin+git@viroteck.net>
*
* 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 masking of user hostnames in a different way to m_cloaking */
/** Holds information on a host set by m_hostchange
*/
class Host
{
public:
enum HostChangeAction
{
HCA_SET,
HCA_SUFFIX,
HCA_ADDNICK
};
HostChangeAction action;
std::string newhost;
std::string ports;
Host(HostChangeAction Action, const std::string& Newhost, const std::string& Ports) :
action(Action), newhost(Newhost), ports(Ports) {}
};
typedef std::vector<std::pair<std::string, Host> > hostchanges_t;
class ModuleHostChange : public Module
{
private:
hostchanges_t hostchanges;
std::string MySuffix;
std::string MyPrefix;
std::string MySeparator;
public:
void init()
{
OnRehash(NULL);
Implementation eventlist[] = { I_OnRehash, I_OnUserConnect };
ServerInstance->Modules->Attach(eventlist, this, 2);
}
virtual void OnRehash(User* user)
{
ConfigTag* host = ServerInstance->Config->ConfValue("host");
MySuffix = host->getString("suffix");
MyPrefix = host->getString("prefix");
MySeparator = host->getString("separator", ".");
hostchanges.clear();
std::set<std::string> dupecheck;
ConfigTagList tags = ServerInstance->Config->ConfTags("hostchange");
for (ConfigIter i = tags.first; i != tags.second; ++i)
{
ConfigTag* tag = i->second;
std::string mask = tag->getString("mask");
if (!dupecheck.insert(mask).second)
throw ModuleException("Duplicate hostchange entry: " + mask);
Host::HostChangeAction act;
std::string newhost;
std::string action = tag->getString("action");
if (!strcasecmp(action.c_str(), "set"))
{
act = Host::HCA_SET;
newhost = tag->getString("value");
}
else if (!strcasecmp(action.c_str(), "suffix"))
act = Host::HCA_SUFFIX;
else if (!strcasecmp(action.c_str(), "addnick"))
act = Host::HCA_ADDNICK;
else
throw ModuleException("Invalid hostchange action: " + action);
hostchanges.push_back(std::make_pair(mask, Host(act, newhost, tag->getString("ports"))));
}
}
virtual Version GetVersion()
{
// returns the version number of the module to be
// listed in /MODULES
return Version("Provides masking of user hostnames in a different way to m_cloaking", VF_VENDOR);
}
virtual void OnUserConnect(LocalUser* user)
{
for (hostchanges_t::iterator i = hostchanges.begin(); i != hostchanges.end(); i++)
{
if (((InspIRCd::MatchCIDR(user->MakeHost(), i->first)) || (InspIRCd::MatchCIDR(user->MakeHostIP(), i->first))))
{
const Host& h = i->second;
if (!h.ports.empty())
{
irc::portparser portrange(h.ports, false);
long portno = -1;
bool foundany = false;
while ((portno = portrange.GetToken()))
if (portno == user->GetServerPort())
foundany = true;
if (!foundany)
continue;
}
// host of new user matches a hostchange tag's mask
std::string newhost;
if (h.action == Host::HCA_SET)
{
newhost = h.newhost;
}
else if (h.action == Host::HCA_SUFFIX)
{
newhost = MySuffix;
}
else if (h.action == Host::HCA_ADDNICK)
{
// first take their nick and strip out non-dns, leaving just [A-Z0-9\-]
std::string complete;
for (std::string::const_iterator j = user->nick.begin(); j != user->nick.end(); ++j)
{
if (((*j >= 'A') && (*j <= 'Z')) ||
((*j >= 'a') && (*j <= 'z')) ||
((*j >= '0') && (*j <= '9')) ||
(*j == '-'))
{
complete = complete + *j;
}
}
if (complete.empty())
complete = "i-have-a-lame-nick";
if (!MyPrefix.empty())
newhost = MyPrefix + MySeparator + complete;
else
newhost = complete + MySeparator + MySuffix;
}
if (!newhost.empty())
{
user->WriteServ("NOTICE "+user->nick+" :Setting your virtual host: " + newhost);
if (!user->ChangeDisplayedHost(newhost.c_str()))
user->WriteServ("NOTICE "+user->nick+" :Could not set your virtual host: " + newhost);
return;
}
}
}
}
};
MODULE_INIT(ModuleHostChange)
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