From 64901dd0cc0c06458477653387bc8be8727abb7e Mon Sep 17 00:00:00 2001
From: alecpl <alec@alec.pl>
Date: Wed, 2 Sep 2009 09:35:19 +0000
Subject: - Password plugin: support hashed passwords and username parts in sql
 driver queries

---
 plugins/password/config.inc.php.dist | 18 ++++++++++++++++-
 plugins/password/drivers/sql.php     | 39 ++++++++++++++++++++++++++++++++++--
 2 files changed, 54 insertions(+), 3 deletions(-)

diff --git a/plugins/password/config.inc.php.dist b/plugins/password/config.inc.php.dist
index 163fddaec..076cfd6a1 100644
--- a/plugins/password/config.inc.php.dist
+++ b/plugins/password/config.inc.php.dist
@@ -21,13 +21,29 @@ $rcmail_config['password_db_dsn'] = '';
 //      %p is replaced with the plaintext new password
 //      %c is replaced with the crypt version of the new password, MD5 if available
 //         otherwise DES.
-//      %u is replaced with the username (from the session info)
 //      %o is replaced with the password before the change
+//      %n is replaced with the hashed version of the new password
+//      %q is replaced with the hashed password before the change
 //      %h is replaced with the imap host (from the session info)
+//      %u is replaced with the username (from the session info)
+//      %l is replaced with the local part of the username
+//         (in case the username is an email address)
+//      %d is replaced with the domain part of the username
+//         (in case the username is an email address)
 // Escaping of macros is handled by this module.
 // Default: "SELECT update_passwd(%c, %u)"
 $rcmail_config['password_query'] = 'SELECT update_passwd(%c, %u)';
 
+// Using a password hash for %n and %q variables.
+// Determine which hashing algorithm should be used to generate
+// the hashed new and current password for using them within the
+// SQL query. Requires PHP's 'hash' extension.
+$rcmail_config['password_hash_algorithm'] = 'sha1';
+
+// You can also decide whether the hash should be provided
+// as hex string or in base64 encoded format.
+$rcmail_config['password_hash_base64'] = false;
+
 
 // Poppassd Driver options
 // -----------------------
diff --git a/plugins/password/drivers/sql.php b/plugins/password/drivers/sql.php
index 98e878a7d..9afaa65d8 100644
--- a/plugins/password/drivers/sql.php
+++ b/plugins/password/drivers/sql.php
@@ -5,7 +5,7 @@
  *
  * Driver for passwords stored in SQL database
  *
- * @version 1.1
+ * @version 1.2
  * @author Aleksander 'A.L.E.C' Machniak <alec@alec.pl>
  *
  */
@@ -34,6 +34,7 @@ function password_save($curpass, $passwd)
     if ($err = $db->is_error())
         return PASSWORD_ERROR;
     
+    // crypted password
     if (strpos($sql, '%c') !== FALSE) {
         $salt = '';
         if (CRYPT_MD5) { 
@@ -48,11 +49,45 @@ function password_save($curpass, $passwd)
         }
         $sql = str_replace('%c',  $db->quote(crypt($passwd, CRYPT_MD5 ? '$1$'.$salt.'$' : $salt)), $sql);
     }
+    
+    // hashed passwords
+    if (preg_match('/%[n|q]/', $sql)) {
+
+	if (!extension_loaded('hash')) {
+	    raise_error(array(
+	        'code' => 600,
+		'type' => 'php',
+		'file' => __FILE__,
+		'message' => "Password plugin: 'hash' extension not loaded!"
+		), true, false);
+	    return PASSWORD_ERROR;			    
+	}
+
+	if (!($hash_algo = strtolower($rcmail->config->get('password_hash_algorithm'))))
+            $hash_algo = 'sha1';
+        
+	$hash_passwd = hash($hash_algo, $passwd);
+        $hash_curpass = hash($hash_algo, $curpass);
+        
+	if ($rcmail->config->get('password_hash_base64')) {
+            $hash_passwd = base64_encode(pack('H*', $hash_passwd));
+            $hash_curpass = base64_encode(pack('H*', $hash_curpass));
+        }
+	
+	$sql = str_replace('%n', $db->quote($hash_passwd, 'text'), $sql);
+	$sql = str_replace('%q', $db->quote($hash_curpass, 'text'), $sql);
+    }
 
+    $user_info = explode('@', $_SESSION['username']);
+    if (count($user_info) >= 2) {
+	$sql = str_replace('%l', $db->quote($user_info[0], 'text'), $sql);
+	$sql = str_replace('%d', $db->quote($user_info[0], 'text'), $sql);
+    }
+    
     $sql = str_replace('%u', $db->quote($_SESSION['username'],'text'), $sql);
+    $sql = str_replace('%h', $db->quote($_SESSION['imap_host'],'text'), $sql);
     $sql = str_replace('%p', $db->quote($passwd,'text'), $sql);
     $sql = str_replace('%o', $db->quote($curpass,'text'), $sql);
-    $sql = str_replace('%h', $db->quote($_SESSION['imap_host'],'text'), $sql);
 
     $res = $db->query($sql);
 
-- 
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