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LDAP: correct escaping in DNs, differ between use for filters and bases. Really fixes #419 now

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This commit is contained in:
Arthur Schiwon 2012-11-20 13:15:02 +01:00
parent fd71023dd6
commit dd694b5fb4
1 changed files with 7 additions and 11 deletions
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18
apps/user_ldap/lib/access.php
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@ -55,6 +55,8 @@ abstract class Access {
\OCP\Util::writeLog('user_ldap', 'LDAP resource not available.', \OCP\Util::DEBUG);
return false;
}
//Slashes should only be escaped in filters, not bases.
$dn = $dn = str_replace('\\5c', '\\', $dn);
$rr = @ldap_read($cr, $dn, 'objectClass=*', array($attr));
if(!is_resource($rr)) {
\OCP\Util::writeLog('user_ldap', 'readAttribute failed for DN '.$dn, \OCP\Util::DEBUG);
@ -113,18 +115,13 @@ abstract class Access {
//make comparisons and everything work
$dn = mb_strtolower($dn, 'UTF-8');
//escape DN values according to RFC 2253
//thanks to Kolab, http://git.kolab.org/pear/Net_LDAP3/tree/lib/Net/LDAP3.php#n1313
//escape DN values according to RFC 2253 – this is already done by ldap_explode_dn
//to use the DN in search filters, \ needs to be escaped to \5c additionally
//to use them in bases, we convert them back to simple backslashes in readAttribute()
$aDN = ldap_explode_dn($dn, false);
unset($aDN['count']);
foreach($aDN as $key => $part) {
$value = substr($part, strpos($part, '=')+1);
$escapedValue = strtr($value, Array(','=>'\2c', '='=>'\3d', '+'=>'\2b',
'<'=>'\3c', '>'=>'\3e', ';'=>'\3b', '\\'=>'\5c',
'"'=>'\22', '#'=>'\23'));
$part = str_replace($part, $value, $escapedValue);
}
$dn = implode(',', $aDN);
$dn = str_replace('\\', '\\5c', $dn);
return $dn;
}
@ -234,7 +231,6 @@ abstract class Access {
* returns the internal ownCloud name for the given LDAP DN of the user, false on DN outside of search DN
*/
public function dn2ocname($dn, $ldapname = null, $isUser = true) {
$dn = $this->sanitizeDN($dn);
$table = $this->getMapTable($isUser);
if($isUser) {
$fncFindMappedName = 'findMappedUser';
@ -431,7 +427,6 @@ abstract class Access {
*/
private function mapComponent($dn, $ocname, $isUser = true) {
$table = $this->getMapTable($isUser);
$dn = $this->sanitizeDN($dn);
$sqlAdjustment = '';
$dbtype = \OCP\Config::getSystemValue('dbtype');
@ -696,6 +691,7 @@ abstract class Access {
public function getUUID($dn) {
if($this->detectUuidAttribute($dn)) {
\OCP\Util::writeLog('user_ldap', 'UUID Checking \ UUID for '.$dn.' using '. $this->connection->ldapUuidAttribute, \OCP\Util::DEBUG);
$uuid = $this->readAttribute($dn, $this->connection->ldapUuidAttribute);
if(!is_array($uuid) && $this->connection->ldapOverrideUuidAttribute) {
$this->detectUuidAttribute($dn, true);