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(Theoretically) allow users to change their passwords. 

I cannot test this... but I hope it works :-)
This commit is contained in:
Craig Andrews 2009-11-17 23:22:19 -05:00
parent b7660b3d99
commit 7dfce35bea
2 changed files with 163 additions and 9 deletions
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164
plugins/LdapAuthentication/LdapAuthenticationPlugin.php
View File

@ -46,6 +46,7 @@ class LdapAuthenticationPlugin extends AuthenticationPlugin
public $options=null;
public $filter=null;
public $scope=null;
public $password_encoding=null;
public $attributes=array();
function onInitializePlugin(){
@ -68,10 +69,6 @@ class LdapAuthenticationPlugin extends AuthenticationPlugin
function checkPassword($username, $password)
{
$ldap = $this->ldap_get_connection();
if(!$ldap){
return false;
}
$entry = $this->ldap_get_user($username);
if(!$entry){
return false;
@ -109,8 +106,38 @@ class LdapAuthenticationPlugin extends AuthenticationPlugin
function changePassword($username,$oldpassword,$newpassword)
{
//TODO implement this
throw new Exception(_('Sorry, changing LDAP passwords is not supported at this time'));
if(! isset($this->attributes['password']) || !isset($this->password_encoding)){
//throw new Exception(_('Sorry, changing LDAP passwords is not supported at this time'));
return false;
}
$entry = $this->ldap_get_user($username);
if(!$entry){
return false;
}else{
$config = $this->ldap_get_config();
$config['binddn']=$entry->dn();
$config['bindpw']=$oldpassword;
if($ldap = $this->ldap_get_connection($config)){
$entry = $this->ldap_get_user($username,array(),$ldap);
$newCryptedPassword = $this->hashPassword($newpassword, $this->password_encoding);
if ($newCryptedPassword===false) {
return false;
}
if($this->password_encoding=='ad') {
//TODO I believe this code will work once this bug is fixed: http://pear.php.net/bugs/bug.php?id=16796
$oldCryptedPassword = $this->hashPassword($oldpassword, $this->password_encoding);
$entry->delete( array($this->attributes['password'] => $oldCryptedPassword ));
}
$entry->replace( array($this->attributes['password'] => $newCryptedPassword ), true);
if( Net_LDAP2::isError($entry->upate()) ) {
return false;
}
return true;
}else{
return false;
}
}
return false;
}
@ -153,8 +180,10 @@ class LdapAuthenticationPlugin extends AuthenticationPlugin
* $param array $attributes LDAP attributes to retrieve
* @return string DN
*/
function ldap_get_user($username,$attributes=array()){
$ldap = $this->ldap_get_connection();
function ldap_get_user($username,$attributes=array(),$ldap=null){
if($ldap==null) {
$ldap = $this->ldap_get_connection();
}
$filter = Net_LDAP2_Filter::create($this->attributes['username'], 'equals', $username);
$options = array(
'scope' => 'sub',
@ -177,4 +206,123 @@ class LdapAuthenticationPlugin extends AuthenticationPlugin
return false;
}
}
/**
* Code originaly from the phpLDAPadmin development team
* http://phpldapadmin.sourceforge.net/
*
* Hashes a password and returns the hash based on the specified enc_type.
*
* @param string $passwordClear The password to hash in clear text.
* @param string $encodageType Standard LDAP encryption type which must be one of
* crypt, ext_des, md5crypt, blowfish, md5, sha, smd5, ssha, or clear.
* @return string The hashed password.
*
*/
function hashPassword( $passwordClear, $encodageType )
{
$encodageType = strtolower( $encodageType );
switch( $encodageType ) {
case 'crypt':
$cryptedPassword = '{CRYPT}' . crypt($passwordClear,$this->randomSalt(2));
break;
case 'ext_des':
// extended des crypt. see OpenBSD crypt man page.
if ( ! defined( 'CRYPT_EXT_DES' ) || CRYPT_EXT_DES == 0 ) {return FALSE;} //Your system crypt library does not support extended DES encryption.
$cryptedPassword = '{CRYPT}' . crypt( $passwordClear, '_' . $this->randomSalt(8) );
break;
case 'md5crypt':
if( ! defined( 'CRYPT_MD5' ) || CRYPT_MD5 == 0 ) {return FALSE;} //Your system crypt library does not support md5crypt encryption.
$cryptedPassword = '{CRYPT}' . crypt( $passwordClear , '$1$' . $this->randomSalt(9) );
break;
case 'blowfish':
if( ! defined( 'CRYPT_BLOWFISH' ) || CRYPT_BLOWFISH == 0 ) {return FALSE;} //Your system crypt library does not support blowfish encryption.
$cryptedPassword = '{CRYPT}' . crypt( $passwordClear , '$2a$12$' . $this->randomSalt(13) ); // hardcoded to second blowfish version and set number of rounds
break;
case 'md5':
$cryptedPassword = '{MD5}' . base64_encode( pack( 'H*' , md5( $passwordClear) ) );
break;
case 'sha':
if( function_exists('sha1') ) {
// use php 4.3.0+ sha1 function, if it is available.
$cryptedPassword = '{SHA}' . base64_encode( pack( 'H*' , sha1( $passwordClear) ) );
} elseif( function_exists( 'mhash' ) ) {
$cryptedPassword = '{SHA}' . base64_encode( mhash( MHASH_SHA1, $passwordClear) );
} else {
return FALSE; //Your PHP install does not have the mhash() function. Cannot do SHA hashes.
}
break;
case 'ssha':
if( function_exists( 'mhash' ) && function_exists( 'mhash_keygen_s2k' ) ) {
mt_srand( (double) microtime() * 1000000 );
$salt = mhash_keygen_s2k( MHASH_SHA1, $passwordClear, substr( pack( "h*", md5( mt_rand() ) ), 0, 8 ), 4 );
$cryptedPassword = "{SSHA}".base64_encode( mhash( MHASH_SHA1, $passwordClear.$salt ).$salt );
} else {
return FALSE; //Your PHP install does not have the mhash() function. Cannot do SHA hashes.
}
break;
case 'smd5':
if( function_exists( 'mhash' ) && function_exists( 'mhash_keygen_s2k' ) ) {
mt_srand( (double) microtime() * 1000000 );
$salt = mhash_keygen_s2k( MHASH_MD5, $passwordClear, substr( pack( "h*", md5( mt_rand() ) ), 0, 8 ), 4 );
$cryptedPassword = "{SMD5}".base64_encode( mhash( MHASH_MD5, $passwordClear.$salt ).$salt );
} else {
return FALSE; //Your PHP install does not have the mhash() function. Cannot do SHA hashes.
}
break;
case 'ad':
$cryptedPassword = '';
$passwordClear = "\"" . $passwordClear . "\"";
$len = strlen($passwordClear);
for ($i = 0; $i < $len; $i++) {
$cryptedPassword .= "{$passwordClear{$i}}\000";
}
case 'clear':
default:
$cryptedPassword = $passwordClear;
}
return $cryptedPassword;
}
/**
* Code originaly from the phpLDAPadmin development team
* http://phpldapadmin.sourceforge.net/
*
* Used to generate a random salt for crypt-style passwords. Salt strings are used
* to make pre-built hash cracking dictionaries difficult to use as the hash algorithm uses
* not only the user's password but also a randomly generated string. The string is
* stored as the first N characters of the hash for reference of hashing algorithms later.
*
* --- added 20021125 by bayu irawan <bayuir@divnet.telkom.co.id> ---
* --- ammended 20030625 by S C Rigler <srigler@houston.rr.com> ---
*
* @param int $length The length of the salt string to generate.
* @return string The generated salt string.
*/
function randomSalt( $length )
{
$possible = '0123456789'.
'abcdefghijklmnopqrstuvwxyz'.
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'.
'./';
$str = "";
mt_srand((double)microtime() * 1000000);
while( strlen( $str ) < $length )
$str .= substr( $possible, ( rand() % strlen( $possible ) ), 1 );
return $str;
}
}

8
plugins/LdapAuthentication/README
View File

@ -18,6 +18,9 @@ email_changeable (true): Are users allowed to change their email address?
(true or false)
password_changeable (true): Are users allowed to change their passwords?
(true or false)
password_encoding: required if users are to be able to change their passwords
Possible values are: crypt, ext_des, md5crypt, blowfish, md5, sha, ssha,
smd5, ad, clear
host*: LDAP server name to connect to. You can provide several hosts in an
array in which case the hosts are tried from left to right.
@ -47,6 +50,7 @@ attributes: an array that relates StatusNet user attributes to LDAP ones
fullname
homepage
location
password: required if users are to be able to change their passwords
* required
default values are in (parenthesis)
@ -67,10 +71,12 @@ addPlugin('ldapAuthentication', array(
'bindpw'=>'password',
'basedn'=>'OU=Users,OU=StatusNet,OU=US,DC=americas,DC=global,DC=loc',
'host'=>array('server1', 'server2'),
'password_encoding'=>'ad',
'attributes'=>array(
'username'=>'sAMAccountName',
'nickname'=>'sAMAccountName',
'email'=>'mail',
'fullname'=>'displayName')
'fullname'=>'displayName',
'password'=>'unicodePwd')
));