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<?php
/**
* MySQL authentication backend
*
* PHP's MySQL extension is needed
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Andreas Gohr <andi@splitbrain.org>
*/
//check for MySQL extension on load
if(!function_exists('mysql_connect'))
msg("MySQL extension not found",-1);
/**
* Execute SQL
*
* Executes SQL statements and returns the results as list
* of hashes. Returns false on error. Returns auto_increment
* IDs on INSERT statements.
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function auth_mysql_runsql($sql_string) {
global $conf;
$cnf = $conf['auth']['mysql'];
$link = @mysql_connect ($cnf['server'], $cnf['user'], $cnf['password']);
if(!$link){
msg('MySQL: Connection to database failed!',-1);
return false;
}
$result = @mysql_db_query($cnf['database'],$sql_string,$link);
if(!$result){
msg('MySQL: '.mysql_error($link));
return false;
}
//mysql_db_query returns 1 on a insert statement -> no need to ask for results
if ($result != 1) {
for($i=0; $i< mysql_num_rows($result); $i++) {
$temparray = mysql_fetch_assoc($result);
$resultarray[]=$temparray;
}
mysql_free_result ($result);
} elseif (mysql_insert_id($link)) {
$resultarray = mysql_insert_id($link); //give back ID on insert
} else
$resultarray = 0; // asure that the return value is valid
mysql_close ($link);
return $resultarray;
}
/**
* Check user+password [required auth function]
*
* Checks if the given user exists and the given
* plaintext password is correct. Furtheron it
* might be checked wether the user is member of
* the right group
*
* @author Andreas Gohr <andi@splitbrain.org>
* @return bool
*/
function auth_checkPass($user,$pass){
global $conf;
$cnf = $conf['auth']['mysql'];
$sql = str_replace('%u',addslashes($user),$cnf['passcheck']);
$sql = str_replace('%g',addslashes($conf['defaultgroup']),$sql);
$sql = str_replace('%p',addslashes($pass),$sql);
$result = auth_mysql_runsql($sql);
return(count($result));
}
/**
* Return user info [required auth function]
*
* Returns info about the given user needs to contain
* at least these fields:
*
* name string full name of the user
* mail string email addres of the user
* grps array list of groups the user is in
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
function auth_getUserData($user){
global $conf;
$cnf = $conf['auth']['mysql'];
$sql = str_replace('%u',addslashes($user),$cnf['userinfo']);
$result = auth_mysql_runsql($sql);
if(!count($result)) return false;
$info = $result[0];
$sql = str_replace('%u',addslashes($user),$cnf['groups']);
$result = auth_mysql_runsql($sql);
if(!count($result)){
$info['grps'][] = $conf['defaultgroup'];
}else{
foreach($result as $row){
$info['grps'][] = $row['group'];
}
}
return $info;
}
/**
* Create a new User [required auth function]
*
* user string username
* pass string password
* name string full name of the user
* mail string email address
*
* Returns false if the user already exists, null when an error
* occoured and the cleartext password of the new user if
* everything went well.
*
* The user HAS TO be added to the default group by this
* function
*
* @author Matthias Grimm <matthiasgrimm@users.sourceforge.net>
*/
function auth_createUser($user,$pass,$name,$mail){
global $conf;
$cnf = $conf['auth']['mysql'];
$info = auth_getUserData($user);
if ($info != false) return false;
$sql = str_replace('%g',$conf['defaultgroup'],$cnf['getgroupid']);
$result = auth_mysql_runsql($sql);
if (count($result) == 1) {
$gid = $result[0]['gid'];
$sql = str_replace('%u',$user,$cnf['adduser']);
$sql = str_replace('%p',$pass,$sql);
$sql = str_replace('%n',$name,$sql);
$sql = str_replace('%e',$mail,$sql);
$uid = auth_mysql_runsql($sql);
if ($uid != 0) {
$sql = str_replace('%uid',$uid,$cnf['addusergroup']);
$sql = str_replace('%gid',$gid,$sql);
auth_mysql_runsql($sql);
return $pass;
} else
msg("Registering of the new user '$user' failed!", -1);
} else
msg("The default group is not cleanly defined in the database!", -1);
return null;
}
//Setup VIM: ex: et ts=2 enc=utf-8 :
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