mirror of
https://github.com/friendica/friendica
synced 2024-05-24 23:34:58 +02:00
176 lines
5 KiB
PHP
176 lines
5 KiB
PHP
<?php
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/**
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* @file src/Core/PConfig.php
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*/
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namespace Friendica\Core;
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use Friendica\Database\DBM;
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use dba;
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/**
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* @file include/Core/PConfig.php
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* @brief contains the class with methods for the management
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* of the user configuration
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*/
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/**
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* @brief Management of user configuration storage
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* Note:
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* Please do not store booleans - convert to 0/1 integer values
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* The PConfig::get() functions return boolean false for keys that are unset,
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* and this could lead to subtle bugs.
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*/
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class PConfig
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{
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private static $in_db;
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/**
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* @brief Loads all configuration values of a user's config family into a cached storage.
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*
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* All configuration values of the given user are stored in global cache
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* which is available under the global variable $a->config[$uid].
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*
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* @param string $uid The user_id
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* @param string $family The category of the configuration value
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*
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* @return void
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*/
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public static function load($uid, $family)
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{
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$a = get_app();
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$r = dba::select('pconfig', array('v', 'k'), array('cat' => $family, 'uid' => $uid));
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if (DBM::is_result($r)) {
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while ($rr = dba::fetch($r)) {
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$k = $rr['k'];
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$a->config[$uid][$family][$k] = $rr['v'];
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self::$in_db[$uid][$family][$k] = true;
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}
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} else if ($family != 'config') {
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// Negative caching
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$a->config[$uid][$family] = "!<unset>!";
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}
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dba::close($r);
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}
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/**
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* @brief Get a particular user's config variable given the category name
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* ($family) and a key.
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*
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* Get a particular user's config value from the given category ($family)
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* and the $key from a cached storage in $a->config[$uid].
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*
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* @param string $uid The user_id
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* @param string $family The category of the configuration value
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* @param string $key The configuration key to query
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* @param mixed $default_value optional, The value to return if key is not set (default: null)
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* @param boolean $refresh optional, If true the config is loaded from the db and not from the cache (default: false)
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*
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* @return mixed Stored value or null if it does not exist
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*/
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public static function get($uid, $family, $key, $default_value = null, $refresh = false)
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{
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$a = get_app();
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if (!$refresh) {
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// Looking if the whole family isn't set
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if (isset($a->config[$uid][$family])) {
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if ($a->config[$uid][$family] === '!<unset>!') {
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return $default_value;
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}
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}
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if (isset($a->config[$uid][$family][$key])) {
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if ($a->config[$uid][$family][$key] === '!<unset>!') {
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return $default_value;
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}
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return $a->config[$uid][$family][$key];
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}
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}
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$ret = dba::select('pconfig', array('v'), array('uid' => $uid, 'cat' => $family, 'k' => $key), array('limit' => 1));
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if (DBM::is_result($ret)) {
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$val = (preg_match("|^a:[0-9]+:{.*}$|s", $ret['v']) ? unserialize($ret['v']) : $ret['v']);
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$a->config[$uid][$family][$key] = $val;
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self::$in_db[$uid][$family][$key] = true;
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return $val;
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} else {
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$a->config[$uid][$family][$key] = '!<unset>!';
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self::$in_db[$uid][$family][$key] = false;
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return $default_value;
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}
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}
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/**
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* @brief Sets a configuration value for a user
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*
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* Stores a config value ($value) in the category ($family) under the key ($key)
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* for the user_id $uid.
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*
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* @note Please do not store booleans - convert to 0/1 integer values!
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*
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* @param string $uid The user_id
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* @param string $family The category of the configuration value
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* @param string $key The configuration key to set
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* @param string $value The value to store
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*
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* @return mixed Stored $value or false
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*/
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public static function set($uid, $family, $key, $value)
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{
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$a = get_app();
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// We store our setting values in a string variable.
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// So we have to do the conversion here so that the compare below works.
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// The exception are array values.
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$dbvalue = (!is_array($value) ? (string)$value : $value);
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$stored = self::get($uid, $family, $key, null, true);
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if (($stored === $dbvalue) && self::$in_db[$uid][$family][$key]) {
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return true;
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}
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$a->config[$uid][$family][$key] = $dbvalue;
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// manage array value
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$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
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dba::update('pconfig', array('v' => $dbvalue), array('uid' => $uid, 'cat' => $family, 'k' => $key), true);
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if ($ret) {
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self::$in_db[$uid][$family][$key] = true;
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return $value;
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}
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return $ret;
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}
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/**
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* @brief Deletes the given key from the users's configuration.
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*
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* Removes the configured value from the stored cache in $a->config[$uid]
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* and removes it from the database.
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*
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* @param string $uid The user_id
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* @param string $family The category of the configuration value
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* @param string $key The configuration key to delete
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*
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* @return mixed
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*/
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public static function delete($uid, $family, $key)
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{
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$a = get_app();
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if (x($a->config[$uid][$family], $key)) {
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unset($a->config[$uid][$family][$key]);
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unset(self::$in_db[$uid][$family][$key]);
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}
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$ret = dba::delete('pconfig', array('uid' => $uid, 'cat' => $family, 'k' => $key));
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return $ret;
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}
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}
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