Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

204 lines
5.4 KiB

<?php
namespace Friendica\Core;
use dbm;
/**
* @file include/Core/PConfig.php
* @brief contains the class with methods for the management
* of the user configuration
*/
/**
* @brief Management of user configuration storage
* Note:
* Please do not store booleans - convert to 0/1 integer values
* The PConfig::get() functions return boolean false for keys that are unset,
* and this could lead to subtle bugs.
*/
class PConfig {
private static $in_db;
/**
* @brief Loads all configuration values of a user's config family into a cached storage.
*
* All configuration values of the given user are stored in global cache
* which is available under the global variable $a->config[$uid].
*
* @param string $uid
* The user_id
* @param string $family
* The category of the configuration value
* @return void
*/
public static function load($uid, $family) {
$a = get_app();
$r = q("SELECT `v`,`k` FROM `pconfig` WHERE `cat` = '%s' AND `uid` = %d ORDER BY `cat`, `k`, `id`",
dbesc($family),
intval($uid)
);
if (dbm::is_result($r)) {
foreach ($r as $rr) {
$k = $rr['k'];
$a->config[$uid][$family][$k] = $rr['v'];
self::$in_db[$uid][$family][$k] = true;
}
} else if ($family != 'config') {
// Negative caching
$a->config[$uid][$family] = "!<unset>!";
}
}
/**
* @brief Get a particular user's config variable given the category name
* ($family) and a key.
*
* Get a particular user's config value from the given category ($family)
* and the $key from a cached storage in $a->config[$uid].
*
* @param string $uid
* The user_id
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to query
* @param mixed $default_value optional
* The value to return if key is not set (default: null)
* @param boolean $refresh optional
* If true the config is loaded from the db and not from the cache (default: false)
* @return mixed Stored value or null if it does not exist
*/
public static function get($uid, $family, $key, $default_value = null, $refresh = false) {
$a = get_app();
if (!$refresh) {
// Looking if the whole family isn't set
if (isset($a->config[$uid][$family])) {
if ($a->config[$uid][$family] === '!<unset>!') {
return $default_value;
}
}
if (isset($a->config[$uid][$family][$key])) {
if ($a->config[$uid][$family][$key] === '!<unset>!') {
return $default_value;
}
return $a->config[$uid][$family][$key];
}
}
$ret = q("SELECT `v` FROM `pconfig` WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s' ORDER BY `id` DESC LIMIT 1",
intval($uid),
dbesc($family),
dbesc($key)
);
if (count($ret)) {
$val = (preg_match("|^a:[0-9]+:{.*}$|s", $ret[0]['v'])?unserialize( $ret[0]['v']):$ret[0]['v']);
$a->config[$uid][$family][$key] = $val;
self::$in_db[$uid][$family][$key] = true;
return $val;
} else {
$a->config[$uid][$family][$key] = '!<unset>!';
self::$in_db[$uid][$family][$key] = false;
return $default_value;
}
}
/**
* @brief Sets a configuration value for a user
*
* Stores a config value ($value) in the category ($family) under the key ($key)
* for the user_id $uid.
*
* @note Please do not store booleans - convert to 0/1 integer values!
*
* @param string $uid
* The user_id
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to set
* @param string $value
* The value to store
* @return mixed Stored $value or false
*/
public static function set($uid, $family, $key, $value) {
$a = get_app();
// We store our setting values in a string variable.
// So we have to do the conversion here so that the compare below works.
// The exception are array values.
$dbvalue = (!is_array($value) ? (string)$value : $value);
$stored = self::get($uid, $family, $key, null, true);
if (($stored === $dbvalue) AND self::$in_db[$uid][$family][$key]) {
return true;
}
$a->config[$uid][$family][$key] = $dbvalue;
// manage array value
$dbvalue = (is_array($value) ? serialize($value) : $dbvalue);
if (is_null($stored) OR !self::$in_db[$uid][$family][$key]) {
$ret = q("INSERT INTO `pconfig` (`uid`, `cat`, `k`, `v`) VALUES (%d, '%s', '%s', '%s') ON DUPLICATE KEY UPDATE `v` = '%s'",
intval($uid),
dbesc($family),
dbesc($key),
dbesc($dbvalue),
dbesc($dbvalue)
);
} else {
$ret = q("UPDATE `pconfig` SET `v` = '%s' WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s'",
dbesc($dbvalue),
intval($uid),
dbesc($family),
dbesc($key)
);
}
if ($ret) {
self::$in_db[$uid][$family][$key] = true;
return $value;
}
return $ret;
}
/**
* @brief Deletes the given key from the users's configuration.
*
* Removes the configured value from the stored cache in $a->config[$uid]
* and removes it from the database.
*
* @param string $uid The user_id
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to delete
* @return mixed
*/
public static function delete($uid,$family,$key) {
$a = get_app();
if (x($a->config[$uid][$family], $key)) {
unset($a->config[$uid][$family][$key]);
unset(self::$in_db[$uid][$family][$key]);
}
$ret = q("DELETE FROM `pconfig` WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s'",
intval($uid),
dbesc($family),
dbesc($key)
);
return $ret;
}
}