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526 lines
14 KiB
PHP
526 lines
14 KiB
PHP
<?php
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/**
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* @file include/config.php
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* @brief Arbitrary configuration storage.
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*
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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 get_?config() 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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* Arrays get stored as serialize strings.
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*
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* @todo There are a few places in the code (such as the admin panel) where
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* boolean configurations need to be fixed as of 10/08/2011.
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*
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* - <b>config</b> is used for hub specific configurations. It overrides the
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* configurations from .htconfig file. The storage is of size TEXT.
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* - <b>pconfig</b> is used for channel specific configurations and takes a
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* <i>channel_id</i> as identifier. It stores for example which features are
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* enabled per channel. The storage is of size MEDIUMTEXT.
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* @code $var = get_pconfig(local_user(), 'category', 'key');@endcode
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* - <b>xconfig</b> is the same as pconfig, except that it uses <i>xchan</i> as
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* an identifier. This is for example for people who do not have a local account.
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* The storage is of size MEDIUMTEXT.
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* @code $observer = $a->get_observer_hash();
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* if ($observer) {
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* $var = get_xconfig($observer, 'category', 'key');
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* }@endcode
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*
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* - get_config() and set_config() can also be done through the command line tool
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* @ref util/config
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* - get_pconfig() and set_pconfig() can also be done through the command line tool
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* @ref util/pconfig and takes a channel_id as first argument.
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*
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*/
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/**
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* @brief Loads the hub's configuration from database to a cached storage.
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*
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* Retrieve a category ($family) of config variables from database to a cached
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* storage in the global $a->config[$family].
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*
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* @param string $family
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* The category of the configuration value
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*/
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function load_config($family) {
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global $a;
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if(! array_key_exists($family, $a->config))
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$a->config[$family] = array();
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if(! array_key_exists('config_loaded', $a->config[$family])) {
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$r = q("SELECT * FROM config WHERE cat = '%s'", dbesc($family));
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if($r !== false) {
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if($r) {
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foreach($r as $rr) {
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$k = $rr['k'];
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$a->config[$family][$k] = $rr['v'];
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}
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}
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$a->config[$family]['config_loaded'] = true;
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}
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}
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}
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/**
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* @brief Get a particular config variable given the category name ($family)
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* and a key.
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*
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* Get a particular config variable from the given category ($family) and the
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* $key from a cached storage in $a->config[$family]. If a key is found in the
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* DB but does not exist in local config cache, pull it into the cache so we
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* do not have to hit the DB again for this item.
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*
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* Returns false if not set.
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*
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to query
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* @return mixed Return value or false on error or if not set
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*/
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function get_config($family, $key) {
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global $a;
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if((! array_key_exists($family, $a->config)) || (! array_key_exists('config_loaded', $a->config[$family])))
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load_config($family);
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if(array_key_exists('config_loaded', $a->config[$family])) {
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if(! array_key_exists($key, $a->config[$family])) {
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return false;
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}
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return ((! is_array($a->config[$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', $a->config[$family][$key]))
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? unserialize($a->config[$family][$key])
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: $a->config[$family][$key]
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);
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}
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return false;
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}
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/**
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* @brief Returns a value directly from the database configuration storage.
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*
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* This function queries directly the database and bypasses the chached storage
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* from get_config($family, $key).
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*
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to query
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* @return mixed
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*/
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function get_config_from_storage($family, $key) {
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$ret = q("SELECT * FROM config WHERE cat = '%s' AND k = '%s' LIMIT 1",
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dbesc($family),
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dbesc($key)
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);
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return $ret;
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}
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/**
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* @brief Sets a configuration value for the hub.
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*
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* Stores a config value ($value) in the category ($family) under the key ($key).
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*
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* Please do not store booleans - convert to 0/1 integer values!
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*
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to set
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* @param mixed $value
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* The value to store in the configuration
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* @return mixed
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* Return the set value, or false if the database update failed
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*/
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function set_config($family, $key, $value) {
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global $a;
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// manage array value
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$dbvalue = ((is_array($value)) ? serialize($value) : $value);
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$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue) : $dbvalue);
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if(get_config($family, $key) === false || (! get_config_from_storage($family, $key))) {
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$ret = q("INSERT INTO config ( cat, k, v ) VALUES ( '%s', '%s', '%s' ) ",
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dbesc($family),
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dbesc($key),
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dbesc($dbvalue)
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);
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if($ret) {
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$a->config[$family][$key] = $value;
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$ret = $value;
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}
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return $ret;
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}
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$ret = q("UPDATE config SET v = '%s' WHERE cat = '%s' AND k = '%s'",
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dbesc($dbvalue),
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dbesc($family),
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dbesc($key)
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);
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if($ret) {
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$a->config[$family][$key] = $value;
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$ret = $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 hub's configuration database.
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*
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* Removes the configured value from the stored cache in $a->config[$family]
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* and removes it from the database.
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*
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to delete
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* @return mixed
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*/
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function del_config($family, $key) {
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global $a;
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$ret = false;
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if(array_key_exists($family, $a->config) && array_key_exists($key, $a->config[$family]))
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unset($a->config[$family][$key]);
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$ret = q("DELETE FROM config WHERE cat = '%s' AND k = '%s'",
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dbesc($family),
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dbesc($key)
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);
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return $ret;
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}
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/**
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* @brief Loads all configuration values of a channel into a cached storage.
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*
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* All configuration values of the given channel 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
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* The channel_id
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* @return void|false Nothing or false if $uid is false
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*/
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function load_pconfig($uid) {
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global $a;
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if($uid === false)
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return false;
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if(! array_key_exists($uid, $a->config))
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$a->config[$uid] = array();
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$r = q("SELECT * FROM pconfig WHERE uid = %d",
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intval($uid)
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);
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if($r) {
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foreach($r as $rr) {
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$k = $rr['k'];
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$c = $rr['cat'];
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if(! array_key_exists($c, $a->config[$uid])) {
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$a->config[$uid][$c] = array();
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$a->config[$uid][$c]['config_loaded'] = true;
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}
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$a->config[$uid][$c][$k] = $rr['v'];
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}
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}
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}
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/**
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* @brief Get a particular channel's config variable given the category name
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* ($family) and a key.
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*
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* Get a particular channel'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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* Returns false if not set.
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*
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* @param string $uid
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* The channel_id
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to query
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* @param boolean $instore (deprecated, without function)
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* @return mixed Stored value or false if it does not exist
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*/
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function get_pconfig($uid, $family, $key, $instore = false) {
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// logger('include/config.php: get_pconfig() deprecated instore param used', LOGGER_DEBUG);
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global $a;
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if($uid === false)
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return false;
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if(! array_key_exists($uid, $a->config))
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load_pconfig($uid);
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if((! array_key_exists($family, $a->config[$uid])) || (! array_key_exists($key, $a->config[$uid][$family])))
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return false;
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return ((! is_array($a->config[$uid][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', $a->config[$uid][$family][$key]))
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? unserialize($a->config[$uid][$family][$key])
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: $a->config[$uid][$family][$key]
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);
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}
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/**
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* @brief Sets a configuration value for a channel.
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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 channel_id $uid.
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*
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* Please do not store booleans - convert to 0/1 integer values!
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*
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* @param string $uid
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* The channel_id
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to query
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* @return mixed Stored $value or false
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*/
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function set_pconfig($uid, $family, $key, $value) {
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global $a;
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// manage array value
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$dbvalue = ((is_array($value)) ? serialize($value) : $value);
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$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue) : $dbvalue);
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if(get_pconfig($uid, $family, $key) === false) {
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if(! array_key_exists($uid, $a->config))
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$a->config[$uid] = array();
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if(! array_key_exists($family, $a->config[$uid]))
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$a->config[$uid][$family] = array();
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// keep a separate copy for all variables which were
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// set in the life of this page. We need this to
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// synchronise channel clones.
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if(! array_key_exists('transient', $a->config[$uid]))
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$a->config[$uid]['transient'] = array();
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if(! array_key_exists($family, $a->config[$uid]['transient']))
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$a->config[$uid]['transient'][$family] = array();
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$a->config[$uid][$family][$key] = $value;
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$a->config[$uid]['transient'][$family][$key] = $value;
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$ret = q("INSERT INTO pconfig ( uid, cat, k, v ) VALUES ( %d, '%s', '%s', '%s' ) ",
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intval($uid),
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dbesc($family),
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dbesc($key),
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dbesc($dbvalue)
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);
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if($ret)
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return $value;
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return $ret;
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}
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$ret = q("UPDATE pconfig SET v = '%s' WHERE uid = %d and cat = '%s' AND k = '%s'",
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dbesc($dbvalue),
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intval($uid),
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dbesc($family),
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dbesc($key)
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);
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// keep a separate copy for all variables which were
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// set in the life of this page. We need this to
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// synchronise channel clones.
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if(! array_key_exists('transient', $a->config[$uid]))
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$a->config[$uid]['transient'] = array();
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if(! array_key_exists($family, $a->config[$uid]['transient']))
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$a->config[$uid]['transient'][$family] = array();
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$a->config[$uid][$family][$key] = $value;
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$a->config[$uid]['transient'][$family][$key] = $value;
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if($ret)
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return $value;
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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 channel'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
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* The channel_id
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to delete
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* @return mixed
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*/
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function del_pconfig($uid, $family, $key) {
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global $a;
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$ret = false;
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if(x($a->config[$uid][$family], $key))
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unset($a->config[$uid][$family][$key]);
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$ret = q("DELETE FROM pconfig WHERE uid = %d AND cat = '%s' AND k = '%s'",
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intval($uid),
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dbesc($family),
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dbesc($key)
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);
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return $ret;
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}
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/**
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* @brief Loads a full xchan's configuration into a cached storage.
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*
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* All configuration values of the given observer hash are stored in global
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* cache which is available under the global variable $a->config[$xchan].
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*
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* @param string $xchan
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* The observer's hash
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* @return void|false Returns false if xchan is not set
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*/
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function load_xconfig($xchan) {
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global $a;
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if(! $xchan)
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return false;
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if(! array_key_exists($xchan, $a->config))
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$a->config[$xchan] = array();
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$r = q("SELECT * FROM xconfig WHERE xchan = '%s'",
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dbesc($xchan)
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);
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if($r) {
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foreach($r as $rr) {
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$k = $rr['k'];
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$c = $rr['cat'];
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if(! array_key_exists($c, $a->config[$xchan])) {
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$a->config[$xchan][$c] = array();
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$a->config[$xchan][$c]['config_loaded'] = true;
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}
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$a->config[$xchan][$c][$k] = $rr['v'];
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}
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}
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}
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/**
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* @brief Get a particular observer's config variable given the category
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* name ($family) and a key.
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*
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* Get a particular observer's config value from the given category ($family)
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* and the $key from a cached storage in $a->config[$xchan].
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*
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* Returns false if not set.
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*
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* @param string $xchan
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* The observer's hash
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to query
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* @return mixed Stored $value or false if it does not exist
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*/
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function get_xconfig($xchan, $family, $key) {
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global $a;
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if(! $xchan)
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return false;
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if(! array_key_exists($xchan, $a->config))
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load_xconfig($xchan);
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if((! array_key_exists($family, $a->config[$xchan])) || (! array_key_exists($key, $a->config[$xchan][$family])))
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return false;
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return ((! is_array($a->config[$xchan][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', $a->config[$xchan][$family][$key]))
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? unserialize($a->config[$xchan][$family][$key])
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: $a->config[$xchan][$family][$key]
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);
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}
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|
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/**
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* @brief Sets a configuration value for an observer.
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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 observer's $xchan hash.
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*
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* Please do not store booleans - convert to 0/1 integer values!
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*
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* @param string $xchan
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* The observer's hash
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* @param string $family
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* The category of the configuration value
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* @param string $key
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* The configuration key to set
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* @return mixed Stored $value or false
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*/
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function set_xconfig($xchan, $family, $key, $value) {
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global $a;
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// manage array value
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$dbvalue = ((is_array($value)) ? serialize($value) : $value);
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$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue) : $dbvalue);
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if(get_xconfig($xchan, $family, $key) === false) {
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if(! array_key_exists($xchan, $a->config))
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$a->config[$xchan] = array();
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if(! array_key_exists($family, $a->config[$xchan]))
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$a->config[$xchan][$family] = array();
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$a->config[$xchan][$family][$key] = $value;
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$ret = q("INSERT INTO xconfig ( xchan, cat, k, v ) VALUES ( '%s', '%s', '%s', '%s' ) ",
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dbesc($xchan),
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dbesc($family),
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dbesc($key),
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dbesc($dbvalue)
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);
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if($ret)
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return $value;
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return $ret;
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}
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$ret = q("UPDATE xconfig SET v = '%s' WHERE xchan = '%s' and cat = '%s' AND k = '%s'",
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dbesc($dbvalue),
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dbesc($xchan),
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dbesc($family),
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dbesc($key)
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);
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$a->config[$xchan][$family][$key] = $value;
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if($ret)
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return $value;
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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 observer's config.
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*
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* Removes the configured value from the stored cache in $a->config[$xchan]
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* and removes it from the database.
|
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*
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* @param string $xchan
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* The observer's hash
|
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* @param string $family
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* The category of the configuration value
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* @param string $key
|
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* The configuration key to delete
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* @return mixed
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*/
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function del_xconfig($xchan, $family, $key) {
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global $a;
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$ret = false;
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|
|
if(x($a->config[$xchan][$family], $key))
|
|
unset($a->config[$xchan][$family][$key]);
|
|
$ret = q("DELETE FROM xconfig WHERE xchan = '%s' AND cat = '%s' AND k = '%s'",
|
|
dbesc($xchan),
|
|
dbesc($family),
|
|
dbesc($key)
|
|
);
|
|
return $ret;
|
|
}
|