Below is my code for a user modifying their own password. This form works flawlessly. Now the problem here is that I want to user to be able to change their email, phone, or even their name. I use an admin account so it has privleges to search up everyone in LDAP and retrieve all information about everyone. Now the problem is I dont want user's inserting duplicates so if a person with email bobizumi@stackoverflow.com already exists in LDAP then the user shouldnt be allowed to enter this email. Same goes for name and email. I am not sure how to do this search for duplicates, I am assuming it uses ldap_search and ldap_get_entries but I am new to programming with LDAP so I am need some programming assistance on how to go about this. If I can see an example or someone can show me an example with perhaps preventing name duplicate and ldap search with admin privleges then I can go on from there and do the rest on my own but I am just really stuck with the code part and not the logic. I can't find too many examples out there on documentation of ldap and its integration and functionality with PHP or any code snippets so I am stuck trying thigns from PHP manual.
PHP:
function changePassword($server,$dn,$user,$oldPassword,$newPassword,$newPasswordCnf){
global $message;
error_reporting(0);
$con=ldap_connect($server);
ldap_set_option($con, LDAP_OPT_PROTOCOL_VERSION, 3);
$findWhat = array ("cn","mail","*");
$findWhere = $dn;
$findFilter = "(uid=$user)";
#bind anon and find user by uid
$sr = ldap_search($con,$dn,$findFilter,$findWhat);
$records = ldap_get_entries($con, $sr);
// echo "<pre>";print_r($records);
/* error if found more than one user */
if ($records["count"] != "1") {
$message[] = "Error E100 - Wrong user.";
return false;
}else {
$message[] = "Found user <b>".$records[0]["cn"][0]."</b>";
}
/* try to bind as that user */
if (ldap_bind($con, $records[0]["dn"], $oldPassword) === false) {
$message[] = "Error E104 - Current password is wrong.";
return false;
}
else { echo"TEST";
$sr = ldap_search($con,$dn,$findFilter,$findWhat);
$records = ldap_get_entries($con, $sr);
echo "<pre>";print_r($records);
}
if ($newPassword != $newPasswordCnf ) {
$message[] = "Error E101 - New passwords do not match! ";
return false;
}
if (strlen($newPassword) < 8 ) {
$message[] = "Error E102 - Your new password is too short! ";
return false;
}
if (!preg_match("/[0-9]/",$newPassword)) {
$message[] = "Error E103 - Your password must contain at least one digit. ";
return false;
}
if (!preg_match("/[a-zA-Z]/",$newPassword)) {
$message[] = "Error E103 - Your password must contain at least one letter. ";
return false;
}
$entry = array();
$entry["userPassword"] = "{SHA}" . base64_encode( pack( "H*", sha1( $newPassword ) ) );
if (ldap_modify($con,$records[0]["dn"],$entry) === false){
$message[] = "E200 - Your password cannot be change, please contact the administrator.";
}
else {
$message[] = " Your password has been changed. ";
//mail($records[0]["mail"][0],"Password change notice : ".$user,"Your password has just been changed.");
}
}
?>
HTML:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Change your password</title>
<style type="text/css">
body { font-family: Verdana,Arial,Courier New; font-size: 0.7em; }
input:focus { background-color: #eee; border-color: red; }
th { text-align: right; padding: 0.8em; }
#container { text-align: center; width: 500px; margin: 5% auto; }
ul { text-align: left; list-style-type: square; }
.msg { margin: 0 auto; text-align: center; color: navy; border-top: 1px solid red; border-bottom: 1px solid red; }
</style>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
</head>
<body>
<div id="container">
<h2> Change your LDAP password </h2>
<ul>
<li> Your new password must be 8 characters long and contain at least one letter and one digit. </li>
</ul>
<form method="post">
<table style="width: 400px; margin: 0 auto;">
<tr><th>Username:</th><td><input name="username" type="text" size="20" autocomplete="off" /></td></tr>
<tr><th>Old password:</th><td><input name="oldPassword" type="password" /></td></tr>
<tr><th>New password:</th><td><input name="newPassword1" type="password" /></td></tr>
<tr><th>New password (confirm):</th><td><input name="newPassword2" type="password" /></td></tr>
<tr><td colspan="2" style="text-align: center;" ><input name="submitted" type="submit" value="Login"/></td></tr>
</table>
</form>
<div class="msg">
<?php
if (isset($_POST["submitted"])) {
$rdn = sprintf($dn,$_POST["username"]);
changePassword($server,$dn,$_POST["username"],$_POST["oldPassword"],$_POST["newPassword1"],$_POST["newPassword2"]);
foreach ( $message as $one ) { echo "<p>$one</p>"; }
}
?>
</div>
</div>
</body></html>
OpenLDAP has a 'uniqueness' overlay designed for exactly this. You load it via slapd.conf and configure which attributes you require to be unique.