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[SESSION] Increase type strictness for full PHP adherence

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Documented this file (adapted from maiyannah's postActiv doc)
This commit also fixes PHP Warning:  session_write_close(): Session callback expects true/false return value in classes/Session.php on line 289 (spoted by XRevan86)
Observation: In a newer release we will be replacing this kind of castings with actual explicit PHP7 return types
This commit is contained in:
Diogo Cordeiro 2019-05-11 21:20:09 +01:00
parent d9a42550ff
commit e8783d46d0
1 changed files with 93 additions and 20 deletions
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113
classes/Session.php
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@ -25,6 +25,13 @@ if (!defined('STATUSNET') && !defined('LACONICA')) {
require_once INSTALLDIR . '/classes/Memcached_DataObject.php';
/**
* Table definition for Session
*
* Superclass representing a saved session as it exists in the database and the associated interfaces.
*
* @author GNU social
*/
class Session extends Managed_DataObject
{
###START_AUTOCODE
@ -39,6 +46,9 @@ class Session extends Managed_DataObject
/* the code above is auto generated do not remove the tag below */
###END_AUTOCODE
/**
* Returns an array describing how the session is stored in the database.
*/
public static function schemaDef()
{
return [
@ -55,17 +65,48 @@ class Session extends Managed_DataObject
];
}
static function open($save_path, $session_name)
/**
* A helper function to print a session-related message to the debug log if
* the site session debug configuration option is enabled.
* @param $msg
* @return void
*/
public static function logdeb($msg)
{
if (common_config('sessions', 'debug')) {
common_debug("Session: " . $msg);
}
}
/**
* Dummy option for saving to file needed for full PHP adherence.
*
* @param $save_path
* @param $session_name
* @return bool true
*/
public static function open($save_path, $session_name)
{
return true;
}
static function close()
/**
* Dummy option for saving to file needed for full PHP adherence.
*
* @return bool true
*/
public static function close()
{
return true;
}
static function read($id)
/**
* Fetch the session data for the session with the given $id.
*
* @param $id
* @return string Returns an encoded string of the read data. If nothing was read, it must return an empty string. Note this value is returned internally to PHP for processing.
*/
public static function read($id)
{
self::logdeb("Fetching session '$id'");
@ -82,14 +123,14 @@ class Session extends Managed_DataObject
}
}
static function logdeb($msg)
{
if (common_config('sessions', 'debug')) {
common_debug("Session: " . $msg);
}
}
static function write($id, $session_data)
/**
* Write the session data for session with given $id as $session_data.
*
* @param $id
* @param $session_data
* @return bool Returns TRUE on success or FALSE on failure.
*/
public static function write($id, $session_data)
{
self::logdeb("Writing session '$id'");
@ -111,7 +152,7 @@ class Session extends Managed_DataObject
} else {
self::logdeb("Successfully inserted '$id' (result = $result).");
}
return $result;
return (bool) $result;
} else {
self::logdeb("'$id' already exists; updating.");
if (strcmp($session->session_data, $session_data) == 0) {
@ -133,12 +174,20 @@ class Session extends Managed_DataObject
self::logdeb("Successfully updated '$id' (result = $result).");
}
return $result;
return (bool) $result;
}
}
}
static function gc($maxlifetime)
/**
* Find sessions that have persisted beyond $maxlifetime and delete them.
* This will be limited by config['sessions']['gc_limit'] - it won't delete
* more than the number of sessions specified there at a single pass.
*
* @param $maxlifetime
* @return bool Returns TRUE on success or FALSE on failure.
*/
public static function gc($maxlifetime)
{
self::logdeb("garbage collection (maxlifetime = $maxlifetime)");
@ -172,9 +221,17 @@ class Session extends Managed_DataObject
self::logdeb("Destroying session '$id'.");
self::destroy($id);
}
return true;
}
static function destroy($id)
/**
* Deletes session with given id $id.
*
* @param $id
* @return bool Returns TRUE on success or FALSE on failure.
*/
public static function destroy($id)
{
self::logdeb("Deleting session $id");
@ -191,15 +248,26 @@ class Session extends Managed_DataObject
} else {
self::logdeb("Successfully deleted '$id' (result = $result).");
}
return $result;
return (bool) $result;
}
}
static function setSaveHandler()
/**
* Set our session handler as the handler for PHP session handling in the context of GNU social.
*
* @return bool Returns TRUE on success or FALSE on failure.
*/
public static function setSaveHandler()
{
self::logdeb("setting save handlers");
$result = session_set_save_handler('Session::open', 'Session::close', 'Session::read',
'Session::write', 'Session::destroy', 'Session::gc');
$result = session_set_save_handler(
'Session::open',
'Session::close',
'Session::read',
'Session::write',
'Session::destroy',
'Session::gc'
);
self::logdeb("save handlers result = $result");
// PHP 5.3 with APC ends up destroying a bunch of object stuff before the session
@ -211,7 +279,12 @@ class Session extends Managed_DataObject
return $result;
}
static function cleanup()
/**
* Stuff to do before the request teardown.
*
* @return void
*/
public static function cleanup()
{
session_write_close();
}