friendica/include/config.php

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<?php
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/**
*
* Arbitrary configuration storage
* Note:
* Please do not store booleans - convert to 0/1 integer values
* The get_?config() functions return boolean false for keys that are unset,
* and this could lead to subtle bugs.
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*
* There are a few places in the code (such as the admin panel) where boolean
* configurations need to be fixed as of 10/08/2011.
*
* @package config;
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*/
/**
* retrieve a "family" of config variables
* from database to cached storage
*/
if(! function_exists('load_config')) {
function load_config($family) {
global $a;
$r = q("SELECT * FROM `config` WHERE `cat` = '%s'",
dbesc($family)
);
if(count($r)) {
foreach($r as $rr) {
$k = $rr['k'];
if ($rr['cat'] === 'config') {
$a->config[$k] = $rr['v'];
} else {
$a->config[$family][$k] = $rr['v'];
}
}
}
}
}
/**
* get a particular config variable given the family name
* and key. Returns false if not set.
*
* If a key is found in the DB but doesn't exist in
* local config cache, pull it into the cache so we don't have
*to hit the DB again for this item.
*/
if(! function_exists('get_config')) {
function get_config($family, $key) {
global $a;
if(isset($a->config[$family][$key])) {
if($a->config[$family][$key] === '!<unset>!') {
return false;
}
return $a->config[$family][$key];
}
$ret = q("SELECT `v` FROM `config` WHERE `cat` = '%s' AND `k` = '%s' LIMIT 1",
dbesc($family),
dbesc($key)
);
if(count($ret)) {
// manage array value
$val = (preg_match("|^a:[0-9]+:{.*}$|", $ret[0]['v'])?unserialize( $ret[0]['v']):$ret[0]['v']);
$a->config[$family][$key] = $val;
return $val;
}
else {
$a->config[$family][$key] = '!<unset>!';
}
return false;
}
}
/**
* Store a config value ($value) in the category ($family)
* under the key ($key)
*
* Return the value, or false if the database update failed
*/
if(! function_exists('set_config')) {
function set_config($family,$key,$value) {
global $a;
// manage array value
$dbvalue = (is_array($value)?serialize($value):$value);
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$dbvalue = (is_bool($value) ? intval($value) : $value);
$a->config[$family][$key] = $value;
$ret = q("REPLACE INTO `config` ( `cat`, `k`, `v` ) VALUES ( '%s', '%s', '%s' ) ",
dbesc($family),
dbesc($key),
dbesc($dbvalue)
);
if($ret) {
return $value;
}
return $ret;
}
}
if(! function_exists('load_pconfig')) {
function load_pconfig($uid,$family) {
global $a;
$r = q("SELECT * FROM `pconfig` WHERE `cat` = '%s' AND `uid` = %d",
dbesc($family),
intval($uid)
);
if(count($r)) {
foreach($r as $rr) {
$k = $rr['k'];
$a->config[$uid][$family][$k] = $rr['v'];
}
}
}
}
/**
* get a particular user-specific config variable given the family name,
* the user id and key. Returns false if not set.
*
* If a key is found in the DB but doesn't exist in
* local config cache, pull it into the cache so we don't have
* to hit the DB again for this item.
*/
if(! function_exists('get_pconfig')) {
function get_pconfig($uid,$family, $key) {
global $a;
if(isset($a->config[$uid][$family][$key])) {
if($a->config[$uid][$family][$key] === '!<unset>!') {
return false;
}
return $a->config[$uid][$family][$key];
}
$ret = q("SELECT `v` FROM `pconfig` WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s' LIMIT 1",
intval($uid),
dbesc($family),
dbesc($key)
);
if(count($ret)) {
$val = (preg_match("|^a:[0-9]+:{.*}$|", $ret[0]['v'])?unserialize( $ret[0]['v']):$ret[0]['v']);
$a->config[$uid][$family][$key] = $val;
return $val;
}
else {
$a->config[$uid][$family][$key] = '!<unset>!';
}
return false;
}
}
/**
* Delete a value from config. This function
* deletes both: db value and cache entry.
*/
if(! function_exists('del_config')) {
function del_config($family,$key) {
global $a;
if(x($a->config[$family],$key))
unset($a->config[$family][$key]);
$ret = q("DELETE FROM `config` WHERE `cat` = '%s' AND `k` = '%s' LIMIT 1",
dbesc($family),
dbesc($key)
);
return $ret;
}
}
/**
* Store a user-specific config value ($value) for user $uid in the category ($family)
* under the key ($key).
*
* Return the value, or false if the database update failed
*/
if(! function_exists('set_pconfig')) {
function set_pconfig($uid,$family,$key,$value) {
global $a;
// manage array value
$dbvalue = (is_array($value)?serialize($value):$value);
$dbvalue = (is_bool($value)?serialize($value):$value);
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$a->config[$uid][$family][$key] = $value;
$ret = q("REPLACE INTO `pconfig` ( `uid`, `cat`, `k`, `v` ) VALUES ( %d, '%s', '%s', '%s' ) ",
intval($uid),
dbesc($family),
dbesc($key),
dbesc($dbvalue)
);
if($ret) {
return $value;
}
return $ret;
}
}
if(! function_exists('del_pconfig')) {
function del_pconfig($uid,$family,$key) {
global $a;
if(x($a->config[$uid][$family],$key))
unset($a->config[$uid][$family][$key]);
$ret = q("DELETE FROM `pconfig` WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s' LIMIT 1",
intval($uid),
dbesc($family),
dbesc($key)
);
return $ret;
}
}