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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2010 Jackmcbarn <jackmcbarn@jackmcbarn.no-ip.org>
* Copyright (C) 2010 Daniel De Graaf <danieldg@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"
#include "opflags.h"
#include "u_listmode.h"
/* $ModDesc: Handles channel ACLs */
/** Handles channel mode +W
*/
class ChannelACLMode : public ListModeBase
{
public:
ChannelACLMode(Module* Creator) : ListModeBase(Creator, "chanacl", 'W', "End of channel access group list", 954, 953, false, "chanacl")
{
fixed_letter = false;
}
virtual void DoRehash()
{
this->ListModeBase::DoRehash();
std::string prefixmode = ServerInstance->Config->GetTag("chanacl")->getString("moderequired", "op");
ModeHandler *prefixmodehandler = ServerInstance->Modes->FindMode(prefixmode);
if (prefixmodehandler)
levelrequired = prefixmodehandler->GetPrefixRank();
else
{
levelrequired = OP_VALUE;
ServerInstance->Logs->Log("CONFIG", DEFAULT, "Prefix " + prefixmode + " specified in <chanacl:moderequired> not found, defaulting to op");
}
}
bool TellListTooLong(User* user, Channel* chan, std::string &word)
{
user->WriteNumeric(959, "%s %s %s :Channel access group list is full", user->nick.c_str(), chan->name.c_str(), word.c_str());
return true;
}
void TellAlreadyOnList(User* user, Channel* chan, std::string &word)
{
user->WriteNumeric(957, "%s %s :The word %s is already on the access group list",user->nick.c_str(), chan->name.c_str(), word.c_str());
}
void TellNotSet(User* user, Channel* chan, std::string &word)
{
user->WriteNumeric(958, "%s %s :No such access group is set",user->nick.c_str(), chan->name.c_str());
}
};
class ModuleChanACL : public Module
{
ChannelACLMode ec;
dynamic_reference<OpFlagProvider> permcheck;
public:
ModuleChanACL() : ec(this), permcheck("opflags") {}
void init()
{
ec.init();
ServerInstance->Modules->AddService(ec);
Implementation eventlist[] = { I_OnPermissionCheck };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
void Prioritize()
{
// this module makes a final yes/no determination; it should be last.
ServerInstance->Modules->SetPriority(this, I_OnPermissionCheck, PRIORITY_LAST);
}
void OnPermissionCheck(PermissionData& perm)
{
if (!perm.chan || !perm.source || perm.result != MOD_RES_PASSTHRU)
return;
Membership* memb = perm.chan->GetUser(perm.source);
modelist* list = ec.extItem.get(perm.chan);
std::set<std::string> given;
if (list)
{
for (modelist::iterator i = list->begin(); i != list->end(); ++i)
{
std::string::size_type pos = i->mask.find(':');
if (pos == std::string::npos)
continue;
irc::commasepstream contents(i->mask.substr(pos + 1));
std::string flag;
while (contents.GetToken(flag))
{
if (InspIRCd::Match(perm.name, flag))
given.insert(i->mask.substr(0,pos));
}
}
}
// if the permission was never mentioned, fall back to default
if (given.empty())
return;
// otherwise, it was mentioned at least once: you must have an access on this list
// problem: the list will have both modes and flags. Pull out the modes first.
std::string flaglist;
unsigned int minrank = INT_MAX;
for(std::set<std::string>::iterator i = given.begin(); i != given.end(); i++)
{
ModeHandler* privmh = i->length() == 1 ?
ServerInstance->Modes->FindMode(i->at(0), MODETYPE_CHANNEL) :
ServerInstance->Modes->FindMode(*i);
if (privmh && privmh->GetPrefixRank())
{
if (privmh->GetPrefixRank() < minrank)
minrank = privmh->GetPrefixRank();
}
else
{
if (!flaglist.empty())
flaglist.push_back(',');
flaglist.append(*i);
}
}
// do they have an opflag, or are they above minimum rank?
if (permcheck && permcheck->PermissionCheck(memb, flaglist))
perm.result = MOD_RES_ALLOW;
else if (memb && memb->GetAccessRank() >= minrank)
perm.result = MOD_RES_ALLOW;
else
{
perm.ErrorNumeric(ERR_CHANOPRIVSNEEDED, "%s :You do not have access to %s on this channel (ACLs active)",
perm.chan->name.c_str(), perm.name.c_str());
perm.result = MOD_RES_DENY;
}
}
Version GetVersion()
{
return Version("Provides the ability to define channel access control lists.",VF_VENDOR);
}
void ReadConfig(ConfigReadStatus&)
{
ec.DoRehash();
}
};
MODULE_INIT(ModuleChanACL)
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