]> git.mxchange.org Git - friendica.git/blobdiff - include/plugin.php
Fix generated po headers
[friendica.git] / include / plugin.php
old mode 100755 (executable)
new mode 100644 (file)
index e37ae84..965b823
@@ -1,11 +1,21 @@
 <?php
+/**
+ * @file include/identity.php
+ * 
+ * @brief Some functions to handle addons and themes.
+ */
 
 
-// install and uninstall plugin
+/**
+ * @brief uninstalls an addon.
+ *
+ * @param string $plugin name of the addon
+ * @return boolean
+ */
 if (! function_exists('uninstall_plugin')){
 function uninstall_plugin($plugin){
        logger("Addons: uninstalling " . $plugin);
-       q("DELETE FROM `addon` WHERE `name` = '%s' LIMIT 1",
+       q("DELETE FROM `addon` WHERE `name` = '%s' ",
                dbesc($plugin)
        );
 
@@ -16,25 +26,47 @@ function uninstall_plugin($plugin){
        }
 }}
 
+/**
+ * @brief installs an addon.
+ *
+ * @param string $plugin name of the addon
+ * @return bool
+ */
 if (! function_exists('install_plugin')){
-function install_plugin($plugin){
+function install_plugin($plugin) {
+       // silently fail if plugin was removed
+
+       if(! file_exists('addon/' . $plugin . '/' . $plugin . '.php'))
+               return false;
        logger("Addons: installing " . $plugin);
        $t = @filemtime('addon/' . $plugin . '/' . $plugin . '.php');
        @include_once('addon/' . $plugin . '/' . $plugin . '.php');
        if(function_exists($plugin . '_install')) {
                $func = $plugin . '_install';
                $func();
-               
+
                $plugin_admin = (function_exists($plugin."_plugin_admin")?1:0);
-               
+
                $r = q("INSERT INTO `addon` (`name`, `installed`, `timestamp`, `plugin_admin`) VALUES ( '%s', 1, %d , %d ) ",
                        dbesc($plugin),
                        intval($t),
                        $plugin_admin
                );
+
+               // we can add the following with the previous SQL
+               // once most site tables have been updated.
+               // This way the system won't fall over dead during the update.
+
+               if(file_exists('addon/' . $plugin . '/.hidden')) {
+                       q("UPDATE `addon` SET `hidden` = 1 WHERE `name` = '%s'",
+                               dbesc($plugin)
+                       );
+               }
+               return true;
        }
        else {
                logger("Addons: FAILED installing " . $plugin);
+               return false;
        }
 
 }}
@@ -53,16 +85,18 @@ function reload_plugins() {
                        $installed = array();
 
                $parr = explode(',',$plugins);
+
                if(count($parr)) {
                        foreach($parr as $pl) {
+
                                $pl = trim($pl);
 
                                $fname = 'addon/' . $pl . '/' . $pl . '.php';
-                               
+
                                if(file_exists($fname)) {
                                        $t = @filemtime($fname);
                                        foreach($installed as $i) {
-                                               if(($i['name'] == $pl) && ($i['timestamp'] != $t)) {    
+                                               if(($i['name'] == $pl) && ($i['timestamp'] != $t)) {
                                                        logger('Reloading plugin: ' . $i['name']);
                                                        @include_once($fname);
 
@@ -74,7 +108,7 @@ function reload_plugins() {
                                                                $func = $pl . '_install';
                                                                $func();
                                                        }
-                                                       q("UPDATE `addon` SET `timestamp` = %d WHERE `id` = %d LIMIT 1",
+                                                       q("UPDATE `addon` SET `timestamp` = %d WHERE `id` = %d",
                                                                intval($t),
                                                                intval($i['id'])
                                                        );
@@ -84,14 +118,32 @@ function reload_plugins() {
                        }
                }
        }
-}}
-                               
 
+}}
 
+/**
+ * @brief check if addon is enabled
+ *
+ * @param string $plugin
+ * @return boolean
+ */
+function plugin_enabled($plugin) {
+       $r = q("SELECT * FROM `addon` WHERE `installed` = 1 AND `name` = '%s'", $plugin);
+       return((bool)(count($r) > 0));
+}
 
 
+/**
+ * @brief registers a hook.
+ *
+ * @param string $hook the name of the hook
+ * @param string $file the name of the file that hooks into
+ * @param string $function the name of the function that the hook will call
+ * @param int $priority A priority (defaults to 0)
+ * @return mixed|bool
+ */
 if(! function_exists('register_hook')) {
-function register_hook($hook,$file,$function) {
+function register_hook($hook,$file,$function,$priority=0) {
 
        $r = q("SELECT * FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s' LIMIT 1",
                dbesc($hook),
@@ -101,18 +153,27 @@ function register_hook($hook,$file,$function) {
        if(count($r))
                return true;
 
-       $r = q("INSERT INTO `hook` (`hook`, `file`, `function`) VALUES ( '%s', '%s', '%s' ) ",
+       $r = q("INSERT INTO `hook` (`hook`, `file`, `function`, `priority`) VALUES ( '%s', '%s', '%s', '%s' ) ",
                dbesc($hook),
                dbesc($file),
-               dbesc($function)
+               dbesc($function),
+               dbesc($priority)
        );
        return $r;
 }}
 
+/**
+ * @brief unregisters a hook.
+ * 
+ * @param string $hook the name of the hook
+ * @param string $file the name of the file that hooks into
+ * @param string $function the name of the function that the hook called
+ * @return array
+ */
 if(! function_exists('unregister_hook')) {
 function unregister_hook($hook,$file,$function) {
 
-       $r = q("DELETE FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s' LIMIT 1",
+       $r = q("DELETE FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s'",
                dbesc($hook),
                dbesc($file),
                dbesc($function)
@@ -125,59 +186,110 @@ if(! function_exists('load_hooks')) {
 function load_hooks() {
        $a = get_app();
        $a->hooks = array();
-       $r = q("SELECT * FROM `hook` WHERE 1");
+       $r = q("SELECT * FROM `hook` WHERE 1 ORDER BY `priority` DESC, `file`");
        if(count($r)) {
                foreach($r as $rr) {
-                       $a->hooks[] = array($rr['hook'], $rr['file'], $rr['function']);
+                       if(! array_key_exists($rr['hook'],$a->hooks))
+                               $a->hooks[$rr['hook']] = array();
+                       $a->hooks[$rr['hook']][] = array($rr['file'],$rr['function']);
                }
        }
 }}
 
-
+/**
+ * @brief Calls a hook.
+ *
+ * Use this function when you want to be able to allow a hook to manipulate
+ * the provided data.
+ *
+ * @param string $name of the hook to call
+ * @param string|array &$data to transmit to the callback handler
+ */
 if(! function_exists('call_hooks')) {
 function call_hooks($name, &$data = null) {
+       $stamp1 = microtime(true);
+
        $a = get_app();
 
-       if(count($a->hooks)) {
-               foreach($a->hooks as $hook) {
-                       if($hook[HOOK_HOOK] === $name) {
-                               @include_once($hook[HOOK_FILE]);
-                               if(function_exists($hook[HOOK_FUNCTION])) {
-                                       $func = $hook[HOOK_FUNCTION];
-                                       $func($a,$data);
-                               }
+       #logger($name, LOGGER_ALL);
+
+       if((is_array($a->hooks)) && (array_key_exists($name,$a->hooks))) {
+               foreach($a->hooks[$name] as $hook) {
+                       // Don't run a theme's hook if the user isn't using the theme
+                       if(strpos($hook[0], 'view/theme/') !== false && strpos($hook[0], 'view/theme/'.current_theme()) === false)
+                               continue;
+
+                       @include_once($hook[0]);
+                       if(function_exists($hook[1])) {
+                               $func = $hook[1];
+                               //logger($name." => ".$hook[0].":".$func."()", LOGGER_DEBUG);
+                               $func($a,$data);
+                       }
+                       else {
+                               // remove orphan hooks
+                               q("DELETE FROM `hook` WHERE `hook` = '%s' AND `file` = '%s' AND `function` = '%s'",
+                                       dbesc($name),
+                                       dbesc($hook[0]),
+                                       dbesc($hook[1])
+                               );
                        }
                }
        }
 }}
 
+//check if an app_menu hook exist for plugin $name.
+//Return true if the plugin is an app
+if(! function_exists('plugin_is_app')) {
+function plugin_is_app($name) {
+       $a = get_app();
+
+       if(is_array($a->hooks) && (array_key_exists('app_menu',$a->hooks))) {
+               foreach($a->hooks['app_menu'] as $hook) {
+                       if($hook[0] == 'addon/'.$name.'/'.$name.'.php')
+                               return true;
+               }
+       }
+
+       return false;
+}}
 
-/*
- * parse plugin comment in search of plugin infos.
+/**
+ * @brief Parse plugin comment in search of plugin infos.
+ *
  * like
- *     
- *      * Name: Plugin
+ * \code
+ *...* Name: Plugin
  *   * Description: A plugin which plugs in
- *      * Version: 1.2.3
+ * . * Version: 1.2.3
  *   * Author: John <profile url>
  *   * Author: Jane <email>
  *   *
+ *  *\endcode
+ * @param string $plugin the name of the plugin
+ * @return array with the plugin information
  */
 
 if (! function_exists('get_plugin_info')){
 function get_plugin_info($plugin){
+
+       $a = get_app();
+
        $info=Array(
                'name' => $plugin,
                'description' => "",
                'author' => array(),
-               'version' => ""
+               'version' => "",
+               'status' => ""
        );
-       
+
        if (!is_file("addon/$plugin/$plugin.php")) return $info;
-       
+
+       $stamp1 = microtime(true);
        $f = file_get_contents("addon/$plugin/$plugin.php");
+       $a->save_timestamp($stamp1, "file");
+
        $r = preg_match("|/\*.*\*/|msU", $f, $m);
-       
+
        if ($r){
                $ll = explode("\n", $m[0]);
                foreach( $ll as $l ) {
@@ -197,25 +309,29 @@ function get_plugin_info($plugin){
                                                $info[$k]=$v;
                                        }
                                }
-                               
+
                        }
                }
-               
+
        }
        return $info;
 }}
 
 
-/*
- * parse theme comment in search of theme infos.
+/**
+ * @brief Parse theme comment in search of theme infos.
+ * 
  * like
- *     
- *      * Name: My Theme
+ * \code
+ * ..* Name: My Theme
  *   * Description: My Cool Theme
- *      * Version: 1.2.3
+ * . * Version: 1.2.3
  *   * Author: John <profile url>
  *   * Maintainer: Jane <profile url>
  *   *
+ * \endcode
+ * @param string $theme the name of the theme
+ * @return array
  */
 
 if (! function_exists('get_theme_info')){
@@ -226,6 +342,7 @@ function get_theme_info($theme){
                'author' => array(),
                'maintainer' => array(),
                'version' => "",
+               'credits' => "",
                'experimental' => false,
                'unsupported' => false
        );
@@ -236,11 +353,14 @@ function get_theme_info($theme){
                $info['unsupported'] = true;
 
        if (!is_file("view/theme/$theme/theme.php")) return $info;
-       
+
+       $a = get_app();
+       $stamp1 = microtime(true);
        $f = file_get_contents("view/theme/$theme/theme.php");
+       $a->save_timestamp($stamp1, "file");
+
        $r = preg_match("|/\*.*\*/|msU", $f, $m);
-       
-       
+
        if ($r){
                $ll = explode("\n", $m[0]);
                foreach( $ll as $l ) {
@@ -269,15 +389,22 @@ function get_theme_info($theme){
                                                $info[$k]=$v;
                                        }
                                }
-                               
+
                        }
                }
-               
+
        }
        return $info;
 }}
 
-
+/**
+ * @brief Returns the theme's screenshot.
+ *
+ * The screenshot is expected as view/theme/$theme/screenshot.[png|jpg].
+ *
+ * @param sring $theme The name of the theme
+ * @return string
+ */
 function get_theme_screenshot($theme) {
        $a = get_app();
        $exts = array('.png','.jpg');
@@ -287,3 +414,123 @@ function get_theme_screenshot($theme) {
        }
        return($a->get_baseurl() . '/images/blank.png');
 }
+
+// install and uninstall theme
+if (! function_exists('uninstall_theme')){
+function uninstall_theme($theme){
+       logger("Addons: uninstalling theme " . $theme);
+
+       @include_once("view/theme/$theme/theme.php");
+       if(function_exists("{$theme}_uninstall")) {
+               $func = "{$theme}_uninstall";
+               $func();
+       }
+}}
+
+if (! function_exists('install_theme')){
+function install_theme($theme) {
+       // silently fail if theme was removed
+
+       if(! file_exists("view/theme/$theme/theme.php"))
+               return false;
+
+       logger("Addons: installing theme $theme");
+
+       @include_once("view/theme/$theme/theme.php");
+
+       if(function_exists("{$theme}_install")) {
+               $func = "{$theme}_install";
+               $func();
+               return true;
+       }
+       else {
+               logger("Addons: FAILED installing theme $theme");
+               return false;
+       }
+
+}}
+
+
+
+// check service_class restrictions. If there are no service_classes defined, everything is allowed.
+// if $usage is supplied, we check against a maximum count and return true if the current usage is
+// less than the subscriber plan allows. Otherwise we return boolean true or false if the property
+// is allowed (or not) in this subscriber plan. An unset property for this service plan means
+// the property is allowed, so it is only necessary to provide negative properties for each plan,
+// or what the subscriber is not allowed to do.
+
+
+function service_class_allows($uid,$property,$usage = false) {
+
+       if($uid == local_user()) {
+               $service_class = $a->user['service_class'];
+       }
+       else {
+               $r = q("SELECT `service_class` FROM `user` WHERE `uid` = %d LIMIT 1",
+                       intval($uid)
+               );
+               if($r !== false and count($r)) {
+                       $service_class = $r[0]['service_class'];
+               }
+       }
+       if(! x($service_class))
+               return true; // everything is allowed
+
+       $arr = get_config('service_class',$service_class);
+       if(! is_array($arr) || (! count($arr)))
+               return true;
+
+       if($usage === false)
+               return ((x($arr[$property])) ? (bool) $arr['property'] : true);
+       else {
+               if(! array_key_exists($property,$arr))
+                       return true;
+               return (((intval($usage)) < intval($arr[$property])) ? true : false);
+       }
+}
+
+
+function service_class_fetch($uid,$property) {
+
+       if($uid == local_user()) {
+               $service_class = $a->user['service_class'];
+       }
+       else {
+               $r = q("SELECT `service_class` FROM `user` WHERE `uid` = %d LIMIT 1",
+                       intval($uid)
+               );
+               if($r !== false and count($r)) {
+                       $service_class = $r[0]['service_class'];
+               }
+       }
+       if(! x($service_class))
+               return false; // everything is allowed
+
+       $arr = get_config('service_class',$service_class);
+       if(! is_array($arr) || (! count($arr)))
+               return false;
+
+       return((array_key_exists($property,$arr)) ? $arr[$property] : false);
+
+}
+
+function upgrade_link($bbcode = false) {
+       $l = get_config('service_class','upgrade_link');
+       if(! $l)
+               return '';
+       if($bbcode)
+               $t = sprintf('[url=%s]' . t('Click here to upgrade.') . '[/url]', $l);
+       else
+               $t = sprintf('<a href="%s">' . t('Click here to upgrade.') . '</div>', $l);
+       return $t;
+}
+
+function upgrade_message($bbcode = false) {
+       $x = upgrade_link($bbcode);
+       return t('This action exceeds the limits set by your subscription plan.') . (($x) ? ' ' . $x : '') ;
+}
+
+function upgrade_bool_message($bbcode = false) {
+       $x = upgrade_link($bbcode);
+       return t('This action is not available under your subscription plan.') . (($x) ? ' ' . $x : '') ;
+}