From fa0e2e615dcddb50bc8ef067227c7b71091916f8 Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aschulz@wikimedia.org>
Date: Wed, 18 Jul 2012 13:43:36 -0700
Subject: [PATCH] [LockManager] Made LSLockManager session 32 chars (128 bits).

Change-Id: I1eba3eb44ebef02c771b518c2bcbdc0d41eb8086
---
 .../backend/lockmanager/LSLockManager.php      | 18 +++++++++---------
 maintenance/locking/LockServerDaemon.php       | 10 +++++-----
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/includes/filerepo/backend/lockmanager/LSLockManager.php b/includes/filerepo/backend/lockmanager/LSLockManager.php
index 024e11b717..894281828c 100644
--- a/includes/filerepo/backend/lockmanager/LSLockManager.php
+++ b/includes/filerepo/backend/lockmanager/LSLockManager.php
@@ -57,14 +57,14 @@ class LSLockManager extends QuorumLockManager {
 	 * Construct a new instance from configuration.
 	 *
 	 * $config paramaters include:
-	 *     'lockServers'  : Associative array of server names to configuration.
-	 *                      Configuration is an associative array that includes:
-	 *                      'host'    - IP address/hostname
-	 *                      'port'    - TCP port
-	 *                      'authKey' - Secret string the lock server uses
-	 *     'srvsByBucket' : Array of 1-16 consecutive integer keys, starting from 0,
-	 *                      each having an odd-numbered list of server names (peers) as values.
-	 *     'connTimeout'  : Lock server connection attempt timeout. [optional]
+	 *   - lockServers  : Associative array of server names to configuration.
+	 *                    Configuration is an associative array that includes:
+	 *                      - host    : IP address/hostname
+	 *                      - port    : TCP port
+	 *                      - authKey : Secret string the lock server uses
+	 *   - srvsByBucket : Array of 1-16 consecutive integer keys, starting from 0,
+	 *                    each having an odd-numbered list of server names (peers) as values.
+	 *   - connTimeout  : Lock server connection attempt timeout. [optional]
 	 *
 	 * @param Array $config
 	 */
@@ -82,7 +82,7 @@ class LSLockManager extends QuorumLockManager {
 			$this->connTimeout = 3; // use some sane amount
 		}
 
-		$this->session = wfRandomString( 31 );
+		$this->session = wfRandomString( 32 ); // 128 bits
 	}
 
 	/**
diff --git a/maintenance/locking/LockServerDaemon.php b/maintenance/locking/LockServerDaemon.php
index ba778f453b..689c93092d 100644
--- a/maintenance/locking/LockServerDaemon.php
+++ b/maintenance/locking/LockServerDaemon.php
@@ -239,7 +239,7 @@ class LockServerDaemon {
 			list( $session, $key, $command, $type, $values ) = $m;
 			if ( sha1( $session . $command . $type . $values . $this->authKey ) !== $key ) {
 				return 'BAD_KEY';
-			} elseif ( strlen( $session ) !== 31 ) {
+			} elseif ( strlen( $session ) !== 32 ) {
 				return 'BAD_SESSION';
 			}
 			$values = explode( '|', $values );
@@ -272,7 +272,7 @@ class LockServerDaemon {
 	/**
 	 * Remove a socket's corresponding session from tracking and
 	 * store it in the dead session tracking if it still has locks.
-	 * 
+	 *
 	 * @param $socket resource
 	 * @return bool
 	 */
@@ -309,7 +309,7 @@ class LockServerDaemon {
 
 	/**
 	 * Get the current timestamp and memory usage
-	 * 
+	 *
 	 * @return string
 	 */
 	protected function stat() {
@@ -479,10 +479,10 @@ class LockHolder {
 
 	/**
 	 * @param $session string
-	 * @return bool 
+	 * @return bool
 	 */
 	public function sessionHasLocks( $session ) {
-		return isset( $this->sessionIndexSh[$session] ) 
+		return isset( $this->sessionIndexSh[$session] )
 			|| isset( $this->sessionIndexEx[$session] );
 	}
 
-- 
2.20.1