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/*
* InspIRCd -- Internet Relay Chat Daemon
*
* Copyright (C) 2009-2010 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 "sql.h"
#include "hash.h"
/* $ModDesc: Allow/Deny connections based upon an arbitary SQL table */
enum AuthState {
AUTH_STATE_NONE = 0,
AUTH_STATE_BUSY = 1,
AUTH_STATE_FAIL = 2
};
class AuthQuery : public SQLQuery
{
public:
const std::string uid;
LocalIntExt& pendingExt;
bool verbose;
AuthQuery(Module* me, const std::string& u, LocalIntExt& e, bool v)
: SQLQuery(me), uid(u), pendingExt(e), verbose(v)
{
}
void OnResult(SQLResult& res)
{
User* user = ServerInstance->FindNick(uid);
if (!user)
return;
if (res.Rows())
{
pendingExt.set(user, AUTH_STATE_NONE);
}
else
{
if (verbose)
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s!%s@%s (SQL query returned no matches)", user->nick.c_str(), user->ident.c_str(), user->host.c_str());
pendingExt.set(user, AUTH_STATE_FAIL);
}
}
void OnError(SQLerror& error)
{
User* user = ServerInstance->FindNick(uid);
if (!user)
return;
pendingExt.set(user, AUTH_STATE_FAIL);
if (verbose)
ServerInstance->SNO->WriteGlobalSno('a', "Forbidden connection from %s!%s@%s (SQL query failed: %s)", user->nick.c_str(), user->ident.c_str(), user->host.c_str(), error.Str());
}
};
class ModuleSQLAuth : public Module
{
LocalIntExt pendingExt;
dynamic_reference<SQLProvider> SQL;
std::string freeformquery;
std::string killreason;
std::string allowpattern;
bool verbose;
public:
ModuleSQLAuth() : pendingExt("sqlauth-wait", this), SQL(this, "SQL")
{
}
void init()
{
ServerInstance->Modules->AddService(pendingExt);
OnRehash(NULL);
Implementation eventlist[] = { I_OnUserDisconnect, I_OnCheckReady, I_OnRehash, I_OnUserRegister };
ServerInstance->Modules->Attach(eventlist, this, 4);
}
void OnRehash(User* user)
{
ConfigTag* conf = ServerInstance->Config->ConfValue("sqlauth");
std::string dbid = conf->getString("dbid");
if (dbid.empty())
SQL.SetProvider("SQL");
else
SQL.SetProvider("SQL/" + dbid);
freeformquery = conf->getString("query");
killreason = conf->getString("killreason");
allowpattern = conf->getString("allowpattern");
verbose = conf->getBool("verbose");
}
ModResult OnUserRegister(LocalUser* user)
{
// Note this is their initial (unresolved) connect block
ConfigTag* tag = user->MyClass->config;
if (!tag->getBool("usesqlauth", true))
return MOD_RES_PASSTHRU;
if (!allowpattern.empty() && InspIRCd::Match(user->nick,allowpattern))
return MOD_RES_PASSTHRU;
if (pendingExt.get(user))
return MOD_RES_PASSTHRU;
if (!SQL)
{
ServerInstance->SNO->WriteGlobalSno('a', "Forbiding connection from %s!%s@%s (SQL database not present)",
user->nick.c_str(), user->ident.c_str(), user->host.c_str());
ServerInstance->Users->QuitUser(user, killreason);
return MOD_RES_PASSTHRU;
}
pendingExt.set(user, AUTH_STATE_BUSY);
ParamM userinfo;
SQL->PopulateUserInfo(user, userinfo);
userinfo["pass"] = user->password;
HashProvider* md5 = ServerInstance->Modules->FindDataService<HashProvider>("hash/md5");
if (md5)
userinfo["md5pass"] = md5->hexsum(user->password);
HashProvider* sha256 = ServerInstance->Modules->FindDataService<HashProvider>("hash/sha256");
if (sha256)
userinfo["sha256pass"] = sha256->hexsum(user->password);
SQL->submit(new AuthQuery(this, user->uuid, pendingExt, verbose), freeformquery, userinfo);
return MOD_RES_PASSTHRU;
}
ModResult OnCheckReady(LocalUser* user)
{
switch (pendingExt.get(user))
{
case AUTH_STATE_NONE:
return MOD_RES_PASSTHRU;
case AUTH_STATE_BUSY:
return MOD_RES_DENY;
case AUTH_STATE_FAIL:
ServerInstance->Users->QuitUser(user, killreason);
return MOD_RES_DENY;
}
return MOD_RES_PASSTHRU;
}
Version GetVersion()
{
return Version("Allow/Deny connections based upon an arbitrary SQL table", VF_VENDOR);
}
};
MODULE_INIT(ModuleSQLAuth)
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