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authorKlaus Weidenbach <Klaus.Weidenbach@gmx.net>2014-09-26 22:28:35 +0200
committerKlaus Weidenbach <Klaus.Weidenbach@gmx.net>2014-09-26 22:28:35 +0200
commit2681071970b44cd25c890e7550e2c5e210e131df (patch)
tree1c7663317196ef68833f551bf6ce7e9fbb4e5279 /include/config.php
parent04e460c8f8915be3b7911bf0b9c9c0bcd8703e25 (diff)
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Some documentation of include/config.php.
I hope my guesses are not completely wrong, anyway please take look not that I tell complete bullshit.
Diffstat (limited to 'include/config.php')
-rw-r--r--include/config.php374
1 files changed, 269 insertions, 105 deletions
diff --git a/include/config.php b/include/config.php
index add7b5f71..a77801717 100644
--- a/include/config.php
+++ b/include/config.php
@@ -1,30 +1,56 @@
-<?php /** @file */
-
+<?php
/**
+ * @file include/config.php
+ * @brief Arbitrary configuration storage.
*
- * 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.
*
- * 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.
+ * Arrays get stored as serialize strings.
+ *
+ * @todo 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.
+ *
+ * - <b>config</b> is used for hub specific configurations. It overrides the
+ * configurations from .htconfig file. The storage is of size TEXT.
+ * - <b>pconfig</b> is used for channel specific configurations and takes a
+ * <i>channel_id</i> as identifier. It stores for example which features are
+ * enabled per channel. The storage is of size MEDIUMTEXT.
+ * @code $var = get_pconfig(local_user(), 'category', 'key');@endcode
+ * - <b>xconfig</b> is the same as pconfig, except that it uses <i>xchan</i> as
+ * an identifier. This is for example for people who do not have a local account.
+ * The storage is of size MEDIUMTEXT.
+ * @code $observer = $a->get_observer_hash();
+ * if ($observer) {
+ * $var = get_xconfig($observer, 'category', 'key');
+ * }@endcode
+ *
+ * - get_config() and set_config() can also be done through the command line tool
+ * @ref util/config
+ * - get_pconfig() and set_pconfig() can also be done through the command line tool
+ * @ref util/pconfig and takes a channel_id as first argument.
+ *
*/
-
-// retrieve a "family" of config variables from database to cached storage
-
+/**
+ * @brief Loads the hub's configuration from database to a cached storage.
+ *
+ * Retrieve a category ($family) of config variables from database to a cached
+ * storage in the global $a->config[$family].
+ *
+ * @param string $family
+ * The category of the configuration value
+ */
function load_config($family) {
global $a;
- if(! array_key_exists($family,$a->config))
+ if(! array_key_exists($family, $a->config))
$a->config[$family] = array();
- if(! array_key_exists('config_loaded',$a->config[$family])) {
-
+ if(! array_key_exists('config_loaded', $a->config[$family])) {
$r = q("SELECT * FROM config WHERE cat = '%s'", dbesc($family));
-
if($r !== false) {
if($r) {
foreach($r as $rr) {
@@ -37,24 +63,31 @@ function load_config($family) {
}
}
-// get a particular config variable given the family name
-// and key. Returns false if not set.
-// $instore is only used by the set_config function
-// to determine if the key already exists in the DB
-// If a key is found in the DB but doesn't exist in
-// local config cache, pull it into the cache so we don't have
-// to hit the DB again for this item.
-
-
+/**
+ * @brief Get a particular config variable given the category name ($family)
+ * and a key.
+ *
+ * Get a particular config variable from the given category ($family) and the
+ * $key from a cached storage in $a->config[$family]. If a key is found in the
+ * DB but does not exist in local config cache, pull it into the cache so we
+ * do not have to hit the DB again for this item.
+ *
+ * Returns false if not set.
+ *
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to query
+ * @return mixed Return value or false on error or if not set
+ */
function get_config($family, $key) {
-
global $a;
- if((! array_key_exists($family,$a->config)) || (! array_key_exists('config_loaded',$a->config[$family])))
+ if((! array_key_exists($family, $a->config)) || (! array_key_exists('config_loaded', $a->config[$family])))
load_config($family);
- if(array_key_exists('config_loaded',$a->config[$family])) {
- if(! array_key_exists($key,$a->config[$family])) {
+ if(array_key_exists('config_loaded', $a->config[$family])) {
+ if(! array_key_exists($key, $a->config[$family])) {
return false;
}
return ((! is_array($a->config[$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', $a->config[$family][$key]))
@@ -65,36 +98,59 @@ function get_config($family, $key) {
return false;
}
-function get_config_from_storage($family,$key) {
- $ret = q("select * from config where cat = '%s' and k = '%s' limit 1",
+/**
+ * @brief Returns a value directly from the database configuration storage.
+ *
+ * This function queries directly the database and bypasses the chached storage
+ * from get_config($family, $key).
+ *
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to query
+ * @return mixed
+ */
+function get_config_from_storage($family, $key) {
+ $ret = q("SELECT * FROM config WHERE cat = '%s' AND k = '%s' LIMIT 1",
dbesc($family),
dbesc($key)
);
return $ret;
}
-
-
-// Store a config value ($value) in the category ($family)
-// under the key ($key)
-// Return the value, or false if the database update failed
-
-function set_config($family,$key,$value) {
+/**
+ * @brief Sets a configuration value for the hub.
+ *
+ * Stores a config value ($value) in the category ($family) under the key ($key).
+ *
+ * Please do not store booleans - convert to 0/1 integer values!
+ *
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to set
+ * @param mixed $value
+ * The value to store in the configuration
+ * @return mixed
+ * Return the set value, or false if the database update failed
+ */
+function set_config($family, $key, $value) {
global $a;
+
// manage array value
$dbvalue = ((is_array($value)) ? serialize($value) : $value);
$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue) : $dbvalue);
- if(get_config($family,$key) === false || (! get_config_from_storage($family,$key))) {
- $a->config[$family][$key] = $value;
-
+ if(get_config($family, $key) === false || (! get_config_from_storage($family, $key))) {
$ret = q("INSERT INTO config ( cat, k, v ) VALUES ( '%s', '%s', '%s' ) ",
dbesc($family),
dbesc($key),
dbesc($dbvalue)
);
- if($ret)
- return $value;
+ if($ret) {
+ $a->config[$family][$key] = $value;
+ $ret = $value;
+ }
return $ret;
}
@@ -104,18 +160,32 @@ function set_config($family,$key,$value) {
dbesc($key)
);
- $a->config[$family][$key] = $value;
-
- if($ret)
- return $value;
+ if($ret) {
+ $a->config[$family][$key] = $value;
+ $ret = $value;
+ }
return $ret;
}
-function del_config($family,$key) {
+/**
+ * @brief Deletes the given key from the hub's configuration database.
+ *
+ * Removes the configured value from the stored cache in $a->config[$family]
+ * and removes it from the database.
+ *
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to delete
+ * @return mixed
+ */
+function del_config($family, $key) {
global $a;
- if(array_key_exists($family,$a->config) && array_key_exists($key,$a->config[$family]))
+ $ret = false;
+
+ if(array_key_exists($family, $a->config) && array_key_exists($key, $a->config[$family]))
unset($a->config[$family][$key]);
- $ret = q("DELETE FROM config WHERE cat = '%s' AND k = '%s' LIMIT 1",
+ $ret = q("DELETE FROM config WHERE cat = '%s' AND k = '%s' LIMIT 1",
dbesc($family),
dbesc($key)
);
@@ -123,17 +193,25 @@ function del_config($family,$key) {
}
-function load_pconfig($uid,$family = '') {
+/**
+ * @brief Loads all configuration values of a channel into a cached storage.
+ *
+ * All configuration values of the given channel are stored in global cache
+ * which is available under the global variable $a->config[$uid].
+ *
+ * @param string $uid
+ * The channel_id
+ * @return void|false Nothing or false if $uid is false
+ */
+function load_pconfig($uid) {
global $a;
if($uid === false)
return false;
- if(! array_key_exists($uid,$a->config))
+ if(! array_key_exists($uid, $a->config))
$a->config[$uid] = array();
- // family is no longer used - load entire user config
-
$r = q("SELECT * FROM `pconfig` WHERE `uid` = %d",
intval($uid)
);
@@ -142,59 +220,88 @@ function load_pconfig($uid,$family = '') {
foreach($r as $rr) {
$k = $rr['k'];
$c = $rr['cat'];
- if(! array_key_exists($c,$a->config[$uid])) {
+ if(! array_key_exists($c, $a->config[$uid])) {
$a->config[$uid][$c] = array();
$a->config[$uid][$c]['config_loaded'] = true;
}
$a->config[$uid][$c][$k] = $rr['v'];
}
- }
+ }
}
-
-
-
-function get_pconfig($uid,$family, $key, $instore = false) {
-
+/**
+ * @brief Get a particular channel's config variable given the category name
+ * ($family) and a key.
+ *
+ * Get a particular channel's config value from the given category ($family)
+ * and the $key from a cached storage in $a->config[$uid].
+ *
+ * Returns false if not set.
+ *
+ * @param string $uid
+ * The channel_id
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to query
+ * @param boolean $instore (deprecated, without function)
+ * @return mixed Stored value or false if it does not exist
+ */
+function get_pconfig($uid, $family, $key, $instore = false) {
+ logger('include/config.php: get_pconfig() deprecated instore param used', LOGGER_DEBUG);
global $a;
if($uid === false)
return false;
- if(! array_key_exists($uid,$a->config))
+ if(! array_key_exists($uid, $a->config))
load_pconfig($uid);
- if((! array_key_exists($family,$a->config[$uid])) || (! array_key_exists($key,$a->config[$uid][$family])))
+ if((! array_key_exists($family, $a->config[$uid])) || (! array_key_exists($key, $a->config[$uid][$family])))
return false;
-
+
return ((! is_array($a->config[$uid][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', $a->config[$uid][$family][$key]))
? unserialize($a->config[$uid][$family][$key])
: $a->config[$uid][$family][$key]
);
}
-function set_pconfig($uid,$family,$key,$value) {
-
+/**
+ * @brief Sets a configuration value for a channel.
+ *
+ * Stores a config value ($value) in the category ($family) under the key ($key)
+ * for the channel_id $uid.
+ *
+ * Please do not store booleans - convert to 0/1 integer values!
+ *
+ * @param string $uid
+ * The channel_id
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to query
+ * @return mixed Stored $value or false
+ */
+function set_pconfig($uid, $family, $key, $value) {
global $a;
-
// manage array value
$dbvalue = ((is_array($value)) ? serialize($value) : $value);
$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue) : $dbvalue);
- if(get_pconfig($uid,$family,$key) === false) {
- if(! array_key_exists($uid,$a->config))
+ if(get_pconfig($uid, $family, $key) === false) {
+ if(! array_key_exists($uid, $a->config))
$a->config[$uid] = array();
- if(! array_key_exists($family,$a->config[$uid]))
+ if(! array_key_exists($family, $a->config[$uid]))
$a->config[$uid][$family] = array();
// keep a separate copy for all variables which were
// set in the life of this page. We need this to
// synchronise channel clones.
- if(! array_key_exists('transient',$a->config[$uid]))
+ if(! array_key_exists('transient', $a->config[$uid]))
$a->config[$uid]['transient'] = array();
- if(! array_key_exists($family,$a->config[$uid]['transient']))
+ if(! array_key_exists($family, $a->config[$uid]['transient']))
$a->config[$uid]['transient'][$family] = array();
$a->config[$uid][$family][$key] = $value;
@@ -222,9 +329,9 @@ function set_pconfig($uid,$family,$key,$value) {
// set in the life of this page. We need this to
// synchronise channel clones.
- if(! array_key_exists('transient',$a->config[$uid]))
+ if(! array_key_exists('transient', $a->config[$uid]))
$a->config[$uid]['transient'] = array();
- if(! array_key_exists($family,$a->config[$uid]['transient']))
+ if(! array_key_exists($family, $a->config[$uid]['transient']))
$a->config[$uid]['transient'][$family] = array();
$a->config[$uid][$family][$key] = $value;
@@ -235,13 +342,27 @@ function set_pconfig($uid,$family,$key,$value) {
return $ret;
}
-
-function del_pconfig($uid,$family,$key) {
-
+/**
+ * @brief Deletes the given key from the channel's configuration.
+ *
+ * Removes the configured value from the stored cache in $a->config[$uid]
+ * and removes it from the database.
+ *
+ * @param string $uid
+ * The channel_id
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to delete
+ * @return mixed
+ */
+function del_pconfig($uid, $family, $key) {
global $a;
- if(x($a->config[$uid][$family],$key))
+ $ret = false;
+
+ if(x($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",
+ $ret = q("DELETE FROM pconfig WHERE uid = %d AND cat = '%s' AND k = '%s' LIMIT 1",
intval($uid),
dbesc($family),
dbesc($key)
@@ -250,18 +371,25 @@ function del_pconfig($uid,$family,$key) {
}
-
-function load_xconfig($xchan,$family = '') {
+/**
+ * @brief Loads a full xchan's configuration into a cached storage.
+ *
+ * All configuration values of the given observer hash are stored in global
+ * cache which is available under the global variable $a->config[$xchan].
+ *
+ * @param string $xchan
+ * The observer's hash
+ * @return void|false Returns false if xchan is not set
+ */
+function load_xconfig($xchan) {
global $a;
if(! $xchan)
return false;
- if(! array_key_exists($xchan,$a->config))
+ if(! array_key_exists($xchan, $a->config))
$a->config[$xchan] = array();
- // family is no longer used. Entire config is loaded
-
$r = q("SELECT * FROM `xconfig` WHERE `xchan` = '%s'",
dbesc($xchan)
);
@@ -270,51 +398,77 @@ function load_xconfig($xchan,$family = '') {
foreach($r as $rr) {
$k = $rr['k'];
$c = $rr['cat'];
- if(! array_key_exists($c,$a->config[$xchan])) {
+ if(! array_key_exists($c, $a->config[$xchan])) {
$a->config[$xchan][$c] = array();
$a->config[$xchan][$c]['config_loaded'] = true;
}
$a->config[$xchan][$c][$k] = $rr['v'];
}
- }
+ }
}
-
-
-
-function get_xconfig($xchan,$family, $key) {
-
+/**
+ * @brief Get a particular observer's config variable given the category
+ * name ($family) and a key.
+ *
+ * Get a particular observer's config value from the given category ($family)
+ * and the $key from a cached storage in $a->config[$xchan].
+ *
+ * Returns false if not set.
+ *
+ * @param string $xchan
+ * The observer's hash
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to query
+ * @return mixed Stored $value or false if it does not exist
+ */
+function get_xconfig($xchan, $family, $key) {
global $a;
if(! $xchan)
return false;
- if(! array_key_exists($xchan,$a->config))
+ if(! array_key_exists($xchan, $a->config))
load_xconfig($xchan);
- if((! array_key_exists($family,$a->config[$xchan])) || (! array_key_exists($key,$a->config[$xchan][$family])))
+ if((! array_key_exists($family, $a->config[$xchan])) || (! array_key_exists($key, $a->config[$xchan][$family])))
return false;
return ((! is_array($a->config[$xchan][$family][$key])) && (preg_match('|^a:[0-9]+:{.*}$|s', $a->config[$xchan][$family][$key]))
? unserialize($a->config[$xchan][$family][$key])
: $a->config[$xchan][$family][$key]
);
-
}
-
-function set_xconfig($xchan,$family,$key,$value) {
-
+/**
+ * @brief Sets a configuration value for an observer.
+ *
+ * Stores a config value ($value) in the category ($family) under the key ($key)
+ * for the observer's $xchan hash.
+ *
+ * Please do not store booleans - convert to 0/1 integer values!
+ *
+ * @param string $xchan
+ * The observer's hash
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to set
+ * @return mixed Stored $value or false
+ */
+function set_xconfig($xchan, $family, $key, $value) {
global $a;
// manage array value
$dbvalue = ((is_array($value)) ? serialize($value) : $value);
$dbvalue = ((is_bool($dbvalue)) ? intval($dbvalue) : $dbvalue);
- if(get_xconfig($xchan,$family,$key) === false) {
- if(! array_key_exists($xchan,$a->config))
+ if(get_xconfig($xchan, $family, $key) === false) {
+ if(! array_key_exists($xchan, $a->config))
$a->config[$xchan] = array();
- if(! array_key_exists($family,$a->config[$xchan]))
+ if(! array_key_exists($family, $a->config[$xchan]))
$a->config[$xchan][$family] = array();
$a->config[$xchan][$family][$key] = $value;
@@ -341,22 +495,32 @@ function set_xconfig($xchan,$family,$key,$value) {
if($ret)
return $value;
return $ret;
-
}
-
-function del_xconfig($xchan,$family,$key) {
-
+/**
+ * @brief Deletes the given key from the observer's config.
+ *
+ * Removes the configured value from the stored cache in $a->config[$xchan]
+ * and removes it from the database.
+ *
+ * @param string $xchan
+ * The observer's hash
+ * @param string $family
+ * The category of the configuration value
+ * @param string $key
+ * The configuration key to delete
+ * @return mixed
+ */
+function del_xconfig($xchan, $family, $key) {
global $a;
- if(x($a->config[$xchan][$family],$key))
+ $ret = false;
+
+ if(x($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' LIMIT 1",
+ $ret = q("DELETE FROM `xconfig` WHERE `xchan` = '%s' AND `cat` = '%s' AND `k` = '%s' LIMIT 1",
dbesc($xchan),
dbesc($family),
dbesc($key)
);
return $ret;
}
-
-
-