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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: Allows storage of oper credentials in an SQL table */
static bool OneOfMatches(const char* host, const char* ip, const std::string& hostlist)
{
std::stringstream hl(hostlist);
std::string xhost;
while (hl >> xhost)
{
if (InspIRCd::Match(host, xhost, ascii_case_insensitive_map) || InspIRCd::MatchCIDR(ip, xhost, ascii_case_insensitive_map))
{
return true;
}
}
return false;
}
class OpMeQuery : public SQLQuery
{
public:
const std::string uid, username, password;
OpMeQuery(Module* me, const std::string& u, const std::string& un, const std::string& pw)
: SQLQuery(me), uid(u), username(un), password(pw)
{
}
void OnResult(SQLResult& res)
{
ServerInstance->Logs->Log("m_sqloper",DEBUG, "SQLOPER: result for %s", uid.c_str());
User* user = ServerInstance->FindNick(uid);
if (!user)
return;
// multiple rows may exist
SQLEntries row;
while (res.GetRow(row))
{
if (OperUser(user, row[0], row[1]))
return;
}
ServerInstance->Logs->Log("m_sqloper",DEBUG, "SQLOPER: no matches for %s (checked %d rows)", uid.c_str(), res.Rows());
// nobody succeeded... fall back to OPER
fallback();
}
void OnError(SQLerror& error)
{
ServerInstance->Logs->Log("m_sqloper",DEFAULT, "SQLOPER: query failed (%s)", error.Str());
fallback();
}
void fallback()
{
User* user = ServerInstance->FindNick(uid);
if (!user)
return;
Command* oper_command = ServerInstance->Parser->GetHandler("OPER");
if (oper_command)
{
std::vector<std::string> params;
params.push_back(username);
params.push_back(password);
oper_command->Handle(params, user);
}
else
{
ServerInstance->Logs->Log("m_sqloper",SPARSE, "BUG: WHAT?! Why do we have no OPER command?!");
}
}
bool OperUser(User* user, const std::string &pattern, const std::string &type)
{
OperIndex::iterator iter = ServerInstance->Config->oper_blocks.find(" " + type);
if (iter == ServerInstance->Config->oper_blocks.end())
{
ServerInstance->Logs->Log("m_sqloper",DEFAULT, "SQLOPER: bad type '%s' in returned row for oper %s", type.c_str(), username.c_str());
return false;
}
OperInfo* ifo = iter->second;
std::string hostname(user->ident);
hostname.append("@").append(user->host);
if (OneOfMatches(hostname.c_str(), user->GetIPString().c_str(), pattern.c_str()))
{
/* Opertype and host match, looks like this is it. */
user->Oper(ifo);
return true;
}
return false;
}
};
class ModuleSQLOper : public Module
{
std::string query;
std::string hashtype;
dynamic_reference<SQLProvider> SQL;
public:
ModuleSQLOper() : SQL(this, "SQL") {}
void init()
{
OnRehash(NULL);
Implementation eventlist[] = { I_OnRehash, I_OnPreCommand };
ServerInstance->Modules->Attach(eventlist, this, sizeof(eventlist)/sizeof(Implementation));
}
void OnRehash(User* user)
{
ConfigTag* tag = ServerInstance->Config->ConfValue("sqloper");
std::string dbid = tag->getString("dbid");
if (dbid.empty())
SQL.SetProvider("SQL");
else
SQL.SetProvider("SQL/" + dbid);
hashtype = tag->getString("hash");
query = tag->getString("query", "SELECT hostname as host, type FROM ircd_opers WHERE username='$username' AND password='$password'");
}
ModResult OnPreCommand(std::string &command, std::vector<std::string> ¶meters, LocalUser *user, bool validated, const std::string &original_line)
{
if (validated && command == "OPER" && parameters.size() >= 2)
{
if (SQL)
{
LookupOper(user, parameters[0], parameters[1]);
/* Query is in progress, it will re-invoke OPER if needed */
return MOD_RES_DENY;
}
ServerInstance->Logs->Log("m_sqloper",DEFAULT, "SQLOPER: database not present");
}
return MOD_RES_PASSTHRU;
}
void LookupOper(User* user, const std::string &username, const std::string &password)
{
HashProvider* hash = ServerInstance->Modules->FindDataService<HashProvider>("hash/" + hashtype);
ParamM userinfo;
SQL->PopulateUserInfo(user, userinfo);
userinfo["username"] = username;
userinfo["password"] = hash ? hash->hexsum(password) : password;
SQL->submit(new OpMeQuery(this, user->uuid, username, password), query, userinfo);
}
Version GetVersion()
{
return Version("Allows storage of oper credentials in an SQL table", VF_VENDOR);
}
};
MODULE_INIT(ModuleSQLOper)
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