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PHP ldap_mod_replace throws warning

Posted on 2007-11-19
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Last Modified: 2008-10-10
I can connect to the active directory server, bind to it and search it and all that, but when i try to use ldap_mod_replace (i am trying to give the users the ability to change their own AD passwords) it throws the following warning:
"Warning: ldap_mod_replace(): Modify: No such object in ..."

I would greatly appretiate any help.
//make the connection//
if(!$ldap_con = ldap_connect($domain_ctr)){ die("Cannot connect"); }
else { echo "<li />Connection successful ..."; }
 
//var_dump( $ldap_con );
if($ldap_bind = ldap_bind($ldap_con, $adm_user."@yponepublishing.local", $adm_pass)){
	//read user file//
	$fp = fopen($user_fl, 'r');
	
	while (($data = fgetcsv($fp, 1000, ",")) !== false) {
		
		//username, repID/
		echo "<li />".count($data);print_r($data);
		if(count($data) == 2){
			//echo "<li />";var_dump($data);
 
			$user_name = $data['0'];
			$new_pass = 'Sales'.$data['1'];
			$attr["unicodePwd"][0] = encodePassword($new_pass);
 
			//Change password/
			if(ldap_mod_replace($ldap_con, "uid=".$user_name.$dc_str, $attr)) {
				echo "<li /> ".$user_name." = Succeded";
			}else { echo "<li />".$user_name." = Failed"; }						
		}//end if 
	}//end while
		
	fclose($fp);
}//end if if($ldap_bind = @ldap_...
 
 
//close connection//
ldap_close($ldap_con);

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Question by:zzman123
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6 Comments
 
LVL 9

Expert Comment

by:MSE-dwells
ID: 20314585
My gut's telling me you have to base64 encode the quoted password string but I haven't got the resources to hand right now to verify that.

I'll look further if time permits and the question remains unresolved ...
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Expert Comment

by:MSE-dwells
ID: 20314684
... there again, now I'm thinking that was a legacy Win2K requirement.

Heh, must stop thinking about this for the moment ... will return later as I said ...
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Author Comment

by:zzman123
ID: 20314854
I think the problem is on the php side and not the AD server itself.
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Accepted Solution

by:
MSE-dwells earned 2000 total points
ID: 20315273
I can't say for certain since my PHP abilities are limited to say the least.  I can say, however, that AD won't accept a password over LDAP unless its LDAPS or LDAP opt 0x96 (LDAP_OPT_ENCRYPT) is in play.  In addition, the password value requires specific encoding; UTF-16 or unicode little-endian I believe.  You may want to take a look at this since it references some of the constraints in play on the back-end -

http://support.microsoft.com/default.aspx?scid=kb;EN-US;269190
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