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-rw-r--r--plugins/password/drivers/ldap_simple.php270
1 files changed, 270 insertions, 0 deletions
diff --git a/plugins/password/drivers/ldap_simple.php b/plugins/password/drivers/ldap_simple.php
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+++ b/plugins/password/drivers/ldap_simple.php
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+<?php
+
+/**
+ * Simple LDAP Password Driver
+ *
+ * Driver for passwords stored in LDAP
+ * This driver is based on Edouard's LDAP Password Driver, but does not
+ * require PEAR's Net_LDAP2 to be installed
+ *
+ * @version 1.0 (2010-07-31)
+ * @author Wout Decre <wout@canodus.be>
+ */
+function password_save($curpass, $passwd)
+{
+ $rcmail = rcmail::get_instance();
+
+ // Connect
+ if (!$ds = ldap_connect($rcmail->config->get('password_ldap_host'), $rcmail->config->get('password_ldap_port'))) {
+ ldap_unbind($ds);
+ return PASSWORD_CONNECT_ERROR;
+ }
+
+ // Set protocol version
+ if (!ldap_set_option($ds, LDAP_OPT_PROTOCOL_VERSION, $rcmail->config->get('password_ldap_version'))) {
+ ldap_unbind($ds);
+ return PASSWORD_CONNECT_ERROR;
+ }
+
+ // Start TLS
+ if ($rcmail->config->get('password_ldap_starttls')) {
+ if (!ldap_start_tls($ds)) {
+ ldap_unbind($ds);
+ return PASSWORD_CONNECT_ERROR;
+ }
+ }
+
+ // Build user DN
+ if ($user_dn = $rcmail->config->get('password_ldap_userDN_mask')) {
+ $user_dn = ldap_simple_substitute_vars($user_dn);
+ } else {
+ $user_dn = ldap_simple_search_userdn($rcmail, $ds);
+ }
+
+ if (empty($user_dn)) {
+ ldap_unbind($ds);
+ return PASSWORD_CONNECT_ERROR;
+ }
+
+ // Connection method
+ switch ($rcmail->config->get('password_ldap_method')) {
+ case 'admin':
+ $binddn = $rcmail->config->get('password_ldap_adminDN');
+ $bindpw = $rcmail->config->get('password_ldap_adminPW');
+ break;
+ case 'user':
+ default:
+ $binddn = $user_dn;
+ $bindpw = $curpass;
+ break;
+ }
+
+
+ $crypted_pass = ldap_simple_hash_password($passwd, $rcmail->config->get('password_ldap_encodage'));
+ $lchattr = $rcmail->config->get('password_ldap_lchattr');
+ $pwattr = $rcmail->config->get('password_ldap_pwattr');
+ $smbpwattr = $rcmail->config->get('password_ldap_samba_pwattr');
+ $smblchattr = $rcmail->config->get('password_ldap_samba_lchattr');
+ $samba = $rcmail->config->get('password_ldap_samba');
+
+ // Support password_ldap_samba option for backward compat.
+ if ($samba && !$smbpwattr) {
+ $smbpwattr = 'sambaNTPassword';
+ $smblchattr = 'sambaPwdLastSet';
+ }
+
+ // Crypt new password
+ if (!$crypted_pass) {
+ return PASSWORD_CRYPT_ERROR;
+ }
+
+ // Crypt new Samba password
+ if ($smbpwattr && !($samba_pass = ldap_simple_hash_password($passwd, 'samba'))) {
+ return PASSWORD_CRYPT_ERROR;
+ }
+
+ // Bind
+ if (!ldap_bind($ds, $binddn, $bindpw)) {
+ ldap_unbind($ds);
+ return PASSWORD_CONNECT_ERROR;
+ }
+
+ $entree[$pwattr] = $crypted_pass;
+
+ // Update PasswordLastChange Attribute if desired
+ if ($lchattr) {
+ $entree[$lchattr] = (int)(time() / 86400);
+ }
+
+ // Update Samba password
+ if ($smbpwattr) {
+ $entree[$smbpwattr] = $samba_pass;
+ }
+
+ // Update Samba password last change
+ if ($smblchattr) {
+ $entree[$smblchattr] = time();
+ }
+
+ if (!ldap_modify($ds, $user_dn, $entree)) {
+ ldap_unbind($ds);
+ return PASSWORD_CONNECT_ERROR;
+ }
+
+ // All done, no error
+ ldap_unbind($ds);
+ return PASSWORD_SUCCESS;
+}
+
+/**
+ * Bind with searchDN and searchPW and search for the user's DN
+ * Use search_base and search_filter defined in config file
+ * Return the found DN
+ */
+function ldap_simple_search_userdn($rcmail, $ds)
+{
+ /* Bind */
+ if (!ldap_bind($ds, $rcmail->config->get('password_ldap_searchDN'), $rcmail->config->get('password_ldap_searchPW'))) {
+ return false;
+ }
+
+ /* Search for the DN */
+ if (!$sr = ldap_search($ds, $rcmail->config->get('password_ldap_search_base'), ldap_simple_substitute_vars($rcmail->config->get('password_ldap_search_filter')))) {
+ return false;
+ }
+
+ /* If no or more entries were found, return false */
+ if (ldap_count_entries($ds, $sr) != 1) {
+ return false;
+ }
+
+ return ldap_get_dn($ds, ldap_first_entry($ds, $sr));
+}
+
+/**
+ * Substitute %login, %name, %domain, %dc in $str
+ * See plugin config for details
+ */
+function ldap_simple_substitute_vars($str)
+{
+ $str = str_replace('%login', $_SESSION['username'], $str);
+ $str = str_replace('%l', $_SESSION['username'], $str);
+
+ $parts = explode('@', $_SESSION['username']);
+
+ if (count($parts) == 2) {
+ $dc = 'dc='.strtr($parts[1], array('.' => ',dc=')); // hierarchal domain string
+
+ $str = str_replace('%name', $parts[0], $str);
+ $str = str_replace('%n', $parts[0], $str);
+ $str = str_replace('%dc', $dc, $str);
+ $str = str_replace('%domain', $parts[1], $str);
+ $str = str_replace('%d', $parts[1], $str);
+ }
+
+ return $str;
+}
+
+/**
+ * Code originaly from the phpLDAPadmin development team
+ * http://phpldapadmin.sourceforge.net/
+ *
+ * Hashes a password and returns the hash based on the specified enc_type
+ */
+function ldap_simple_hash_password($password_clear, $encodage_type)
+{
+ $encodage_type = strtolower($encodage_type);
+ switch ($encodage_type) {
+ case 'crypt':
+ $crypted_password = '{CRYPT}' . crypt($password_clear, ldap_simple_random_salt(2));
+ break;
+ case 'ext_des':
+ /* Extended DES crypt. see OpenBSD crypt man page */
+ if (!defined('CRYPT_EXT_DES') || CRYPT_EXT_DES == 0) {
+ /* Your system crypt library does not support extended DES encryption */
+ return false;
+ }
+ $crypted_password = '{CRYPT}' . crypt($password_clear, '_' . ldap_simple_random_salt(8));
+ break;
+ case 'md5crypt':
+ if (!defined('CRYPT_MD5') || CRYPT_MD5 == 0) {
+ /* Your system crypt library does not support md5crypt encryption */
+ return false;
+ }
+ $crypted_password = '{CRYPT}' . crypt($password_clear, '$1$' . ldap_simple_random_salt(9));
+ break;
+ case 'blowfish':
+ if (!defined('CRYPT_BLOWFISH') || CRYPT_BLOWFISH == 0) {
+ /* Your system crypt library does not support blowfish encryption */
+ return false;
+ }
+ /* Hardcoded to second blowfish version and set number of rounds */
+ $crypted_password = '{CRYPT}' . crypt($password_clear, '$2a$12$' . ldap_simple_random_salt(13));
+ break;
+ case 'md5':
+ $crypted_password = '{MD5}' . base64_encode(pack('H*', md5($password_clear)));
+ break;
+ case 'sha':
+ if (function_exists('sha1')) {
+ /* Use PHP 4.3.0+ sha1 function, if it is available */
+ $crypted_password = '{SHA}' . base64_encode(pack('H*', sha1($password_clear)));
+ } else if (function_exists('mhash')) {
+ $crypted_password = '{SHA}' . base64_encode(mhash(MHASH_SHA1, $password_clear));
+ } else {
+ /* Your PHP install does not have the mhash() function */
+ return false;
+ }
+ break;
+ case 'ssha':
+ if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) {
+ mt_srand((double) microtime() * 1000000 );
+ $salt = mhash_keygen_s2k(MHASH_SHA1, $password_clear, substr(pack('h*', md5(mt_rand())), 0, 8), 4);
+ $crypted_password = '{SSHA}' . base64_encode(mhash(MHASH_SHA1, $password_clear . $salt) . $salt);
+ } else {
+ /* Your PHP install does not have the mhash() function */
+ return false;
+ }
+ break;
+ case 'smd5':
+ if (function_exists('mhash') && function_exists('mhash_keygen_s2k')) {
+ mt_srand((double) microtime() * 1000000 );
+ $salt = mhash_keygen_s2k(MHASH_MD5, $password_clear, substr(pack('h*', md5(mt_rand())), 0, 8), 4);
+ $crypted_password = '{SMD5}' . base64_encode(mhash(MHASH_MD5, $password_clear . $salt) . $salt);
+ } else {
+ /* Your PHP install does not have the mhash() function */
+ return false;
+ }
+ break;
+ case 'samba':
+ if (function_exists('hash')) {
+ $crypted_password = hash('md4', rcube_charset_convert($password_clear, RCMAIL_CHARSET, 'UTF-16LE'));
+ } else {
+ /* Your PHP install does not have the hash() function */
+ return false;
+ }
+ break;
+ case 'clear':
+ default:
+ $crypted_password = $password_clear;
+ }
+
+ return $crypted_password;
+}
+
+/**
+ * Code originaly from the phpLDAPadmin development team
+ * http://phpldapadmin.sourceforge.net/
+ *
+ * Used to generate a random salt for crypt-style passwords
+ */
+function ldap_simple_random_salt($length)
+{
+ $possible = '0123456789' . 'abcdefghijklmnopqrstuvwxyz' . 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' . './';
+ $str = '';
+ // mt_srand((double)microtime() * 1000000);
+ while (strlen($str) < $length) {
+ $str .= substr($possible, (rand() % strlen($possible)), 1);
+ }
+
+ return $str;
+}
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