mirror of
https://github.com/kremalicious/krtmn.git
synced 2024-06-29 00:57:58 +02:00
627 lines
19 KiB
PHP
Executable File
627 lines
19 KiB
PHP
Executable File
<?php
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/**
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* The filter/plugin API is located in this file, which allows for creating filters
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* and hooking functions, and methods. The functions or methods will be run when
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* the filter is called.
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*
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* Any of the syntaxes explained in the PHP documentation for the
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* {@link http://us2.php.net/manual/en/language.pseudo-types.php#language.types.callback 'callback'}
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* type are valid.
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*
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* This API is heavily inspired by the one I implemented in Zenphoto 1.3, which was heavily inspired by the one used in WordPress.
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*
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* @author Ozh
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* @since 1.5
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*/
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if( !isset( $yourls_filters ) )
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$yourls_filters = array();
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/* This global var will collect filters with the following structure:
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* $yourls_filters['hook']['array of priorities']['serialized function names']['array of ['array (functions, accepted_args, filter or action)]']
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*/
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if( !isset( $yourls_actions ) )
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$yourls_actions = array();
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/* This global var will collect 'done' actions with the following structure:
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* $yourls_actions['hook'] => number of time this action was done
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*/
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/**
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* Registers a filtering function
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*
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* Typical use:
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* yourls_add_filter('some_hook', 'function_handler_for_hook');
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*
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* @global array $yourls_filters Storage for all of the filters
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* @param string $hook the name of the YOURLS element to be filtered or YOURLS action to be triggered
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* @param callback $function_name the name of the function that is to be called.
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* @param integer $priority optional. Used to specify the order in which the functions associated with a particular action are executed (default=10, lower=earlier execution, and functions with the same priority are executed in the order in which they were added to the filter)
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* @param int $accepted_args optional. The number of arguments the function accept (default is the number provided).
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* @param string $type
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*/
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function yourls_add_filter( $hook, $function_name, $priority = 10, $accepted_args = NULL, $type = 'filter' ) {
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global $yourls_filters;
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// At this point, we cannot check if the function exists, as it may well be defined later (which is OK)
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$id = yourls_filter_unique_id( $hook, $function_name, $priority );
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$yourls_filters[ $hook ][ $priority ][ $id ] = array(
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'function' => $function_name,
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'accepted_args' => $accepted_args,
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'type' => $type,
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);
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}
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/**
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* Hooks a function on to a specific action.
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*
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* Actions are the hooks that YOURLS launches at specific points
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* during execution, or when specific events occur. Plugins can specify that
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* one or more of its PHP functions are executed at these points, using the
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* Action API.
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*
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* @param string $hook The name of the action to which the $function_to_add is hooked.
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* @param callback $function_name The name of the function you wish to be called.
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* @param int $priority optional. Used to specify the order in which the functions associated with a particular action are executed (default: 10). Lower numbers correspond with earlier execution, and functions with the same priority are executed in the order in which they were added to the action.
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* @param int $accepted_args optional. The number of arguments the function accept (default 1).
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*/
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function yourls_add_action( $hook, $function_name, $priority = 10, $accepted_args = 1 ) {
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return yourls_add_filter( $hook, $function_name, $priority, $accepted_args, 'action' );
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}
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/**
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* Build Unique ID for storage and retrieval.
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*
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* Simply using a function name is not enough, as several functions can have the same name when they are enclosed in classes.
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*
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* @global array $yourls_filters storage for all of the filters
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* @param string $hook hook to which the function is attached
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* @param string|array $function used for creating unique id
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* @param int|bool $priority used in counting how many hooks were applied. If === false and $function is an object reference, we return the unique id only if it already has one, false otherwise.
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* @return string unique ID for usage as array key
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*/
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function yourls_filter_unique_id( $hook, $function, $priority ) {
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global $yourls_filters;
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// If function then just skip all of the tests and not overwrite the following.
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if ( is_string( $function ) ) {
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return $function;
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}
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if( is_object($function) ) {
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// Closures are currently implemented as objects
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$function = array( $function, '' );
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} else {
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$function = (array) $function;
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}
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// Object Class Calling
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if ( is_object( $function[0] ) ) {
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return spl_object_hash( $function[0] ) . $function[1];
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}
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// Static Calling
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if ( is_string( $function[0] ) ) {
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return $function[0]. '::' .$function[1];
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}
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}
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/**
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* Performs a filtering operation on a YOURLS element or event.
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*
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* Typical use:
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*
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* 1) Modify a variable if a function is attached to hook 'yourls_hook'
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* $yourls_var = "default value";
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* $yourls_var = yourls_apply_filter( 'yourls_hook', $yourls_var );
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*
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* 2) Trigger functions is attached to event 'yourls_event'
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* yourls_apply_filter( 'yourls_event' );
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* (see yourls_do_action() )
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*
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* Returns an element which may have been filtered by a filter.
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*
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* @global array $yourls_filters storage for all of the filters
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* @param string $hook the name of the YOURLS element or action
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* @param mixed $value the value of the element before filtering
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* @return mixed
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*/
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function yourls_apply_filter( $hook, $value = '' ) {
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global $yourls_filters;
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if ( !isset( $yourls_filters[ $hook ] ) )
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return $value;
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$args = func_get_args();
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// Sort filters by priority
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ksort( $yourls_filters[ $hook ] );
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// Loops through each filter
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reset( $yourls_filters[ $hook ] );
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do {
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foreach( (array) current( $yourls_filters[ $hook ] ) as $the_ ) {
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if ( !is_null( $the_['function'] ) ){
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$args[1] = $value;
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$count = $the_['accepted_args'];
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if ( is_null( $count ) ) {
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$_value = call_user_func_array( $the_['function'], array_slice( $args, 1 ) );
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} else {
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$_value = call_user_func_array( $the_['function'], array_slice( $args, 1, (int) $count ) );
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}
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}
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if( $the_['type'] == 'filter' )
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$value = $_value;
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}
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} while ( next( $yourls_filters[ $hook ] ) !== false );
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if( $the_['type'] == 'filter' )
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return $value;
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}
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/**
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* Performs an action triggered by a YOURLS event.
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*
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* @param string $hook the name of the YOURLS action
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* @param mixed $arg action arguments
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*/
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function yourls_do_action( $hook, $arg = '' ) {
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global $yourls_actions;
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// Keep track of actions that are "done"
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if ( !isset( $yourls_actions ) )
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$yourls_actions = array();
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if ( !isset( $yourls_actions[ $hook ] ) ) {
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$yourls_actions[ $hook ] = 1;
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} else {
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++$yourls_actions[ $hook ];
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}
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$args = array();
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if ( is_array( $arg ) && 1 == count( $arg ) && isset( $arg[0] ) && is_object( $arg[0] ) ) // array(&$this)
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$args[] =& $arg[0];
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else
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$args[] = $arg;
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for ( $a = 2; $a < func_num_args(); $a++ )
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$args[] = func_get_arg( $a );
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yourls_apply_filter( $hook, $args );
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}
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/**
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* Retrieve the number times an action is fired.
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*
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* @param string $hook Name of the action hook.
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* @return int The number of times action hook <tt>$hook</tt> is fired
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*/
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function yourls_did_action( $hook ) {
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global $yourls_actions;
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if ( !isset( $yourls_actions ) || !isset( $yourls_actions[ $hook ] ) )
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return 0;
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return $yourls_actions[ $hook ];
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}
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/**
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* Removes a function from a specified filter hook.
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*
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* This function removes a function attached to a specified filter hook. This
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* method can be used to remove default functions attached to a specific filter
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* hook and possibly replace them with a substitute.
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*
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* To remove a hook, the $function_to_remove and $priority arguments must match
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* when the hook was added.
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*
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* @global array $yourls_filters storage for all of the filters
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* @param string $hook The filter hook to which the function to be removed is hooked.
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* @param callback $function_to_remove The name of the function which should be removed.
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* @param int $priority optional. The priority of the function (default: 10).
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* @return boolean Whether the function was registered as a filter before it was removed.
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*/
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function yourls_remove_filter( $hook, $function_to_remove, $priority = 10 ) {
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global $yourls_filters;
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$function_to_remove = yourls_filter_unique_id( $hook, $function_to_remove, $priority );
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$remove = isset( $yourls_filters[ $hook ][ $priority ][ $function_to_remove ] );
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if ( $remove === true ) {
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unset ( $yourls_filters[$hook][$priority][$function_to_remove] );
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if ( empty( $yourls_filters[$hook][$priority] ) )
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unset( $yourls_filters[$hook] );
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}
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return $remove;
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}
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/**
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* Removes a function from a specified action hook.
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*
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* @see yourls_remove_filter()
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*
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* @param string $hook The action hook to which the function to be removed is hooked.
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* @param callback $function_to_remove The name of the function which should be removed.
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* @param int $priority optional. The priority of the function (default: 10).
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* @return boolean Whether the function was registered as an action before it was removed.
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*/
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function yourls_remove_action( $hook, $function_to_remove, $priority = 10 ) {
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return yourls_remove_filter( $hook, $function_to_remove, $priority );
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}
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/**
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* Removes all functions from a specified action hook.
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*
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* @see yourls_remove_all_filters()
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* @since 1.7.1
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*
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* @param string $hook The action to remove hooks from
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* @param int $priority optional. The priority of the functions to remove
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* @return boolean true when it's finished
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*/
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function yourls_remove_all_actions( $hook, $priority = false ) {
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return yourls_remove_all_filters( $hook, $priority );
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}
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/**
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* Removes all functions from a specified filter hook.
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*
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* @since 1.7.1
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*
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* @param string $hook The filter to remove hooks from
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* @param int $priority optional. The priority of the functions to remove
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* @return boolean true when it's finished
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*/
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function yourls_remove_all_filters( $hook, $priority = false ) {
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global $yourls_filters;
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if( isset( $yourls_filters[ $hook ] ) ) {
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if( $priority === false ) {
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unset( $yourls_filters[ $hook ] );
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} else if ( isset( $yourls_filters[ $hook ][ $priority ] ) ) {
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unset( $yourls_filters[ $hook ][ $priority ] );
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}
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}
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return true;
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}
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/**
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* Check if any filter has been registered for a hook.
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*
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* @global array $yourls_filters storage for all of the filters
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* @param string $hook The name of the filter hook.
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* @param callback $function_to_check optional. If specified, return the priority of that function on this hook or false if not attached.
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* @return int|boolean Optionally returns the priority on that hook for the specified function.
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*/
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function yourls_has_filter( $hook, $function_to_check = false ) {
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global $yourls_filters;
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$has = !empty( $yourls_filters[ $hook ] );
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if ( false === $function_to_check || false == $has ) {
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return $has;
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}
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if ( !$idx = yourls_filter_unique_id( $hook, $function_to_check, false ) )
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return false;
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foreach ( (array) array_keys( $yourls_filters[ $hook ] ) as $priority ) {
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if ( isset( $yourls_filters[ $hook ][ $priority ][ $idx ] ) )
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return $priority;
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}
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return false;
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}
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function yourls_has_action( $hook, $function_to_check = false ) {
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return yourls_has_filter( $hook, $function_to_check );
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}
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/**
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* Return number of active plugins
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*
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* @return integer Number of activated plugins
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*/
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function yourls_has_active_plugins( ) {
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global $ydb;
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if( !property_exists( $ydb, 'plugins' ) || !$ydb->plugins )
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$ydb->plugins = array();
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return count( $ydb->plugins );
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}
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/**
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* List plugins in /user/plugins
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*
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* @return array Array of [/plugindir/plugin.php]=>array('Name'=>'Ozh', 'Title'=>'Hello', )
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*/
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function yourls_get_plugins( ) {
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$plugins = (array) glob( YOURLS_PLUGINDIR .'/*/plugin.php');
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if( !$plugins )
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return array();
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foreach( $plugins as $key => $plugin ) {
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$_plugin = yourls_plugin_basename( $plugin );
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$plugins[ $_plugin ] = yourls_get_plugin_data( $plugin );
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unset( $plugins[ $key ] );
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}
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return $plugins;
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}
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/**
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* Check if a plugin is active
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*
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* @param string $plugin Physical path to plugin file
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* @return bool
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*/
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function yourls_is_active_plugin( $plugin ) {
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if( !yourls_has_active_plugins( ) )
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return false;
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global $ydb;
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$plugin = yourls_plugin_basename( $plugin );
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return in_array( $plugin, $ydb->plugins );
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}
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/**
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* Parse a plugin header
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*
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* @param string $file Physical path to plugin file
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* @return array Array of 'Field'=>'Value' from plugin comment header lines of the form "Field: Value"
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*/
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function yourls_get_plugin_data( $file ) {
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$fp = fopen( $file, 'r' ); // assuming $file is readable, since yourls_load_plugins() filters this
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$data = fread( $fp, 8192 ); // get first 8kb
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fclose( $fp );
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// Capture all the header within first comment block
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if( !preg_match( '!.*?/\*(.*?)\*/!ms', $data, $matches ) )
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return array();
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// Capture each line with "Something: some text"
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unset( $data );
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$lines = preg_split( "[\n|\r]", $matches[1] );
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unset( $matches );
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$plugin_data = array();
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foreach( $lines as $line ) {
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if( !preg_match( '!(.*?):\s+(.*)!', $line, $matches ) )
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continue;
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list( $null, $field, $value ) = array_map( 'trim', $matches);
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$plugin_data[ $field ] = $value;
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}
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return $plugin_data;
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}
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// Include active plugins
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function yourls_load_plugins() {
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// Don't load plugins when installing or updating
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if( yourls_is_installing() OR yourls_is_upgrading() )
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return;
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$active_plugins = yourls_get_option( 'active_plugins' );
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if( false === $active_plugins )
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return;
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global $ydb;
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$ydb->plugins = array();
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foreach( (array)$active_plugins as $key=>$plugin ) {
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if( yourls_validate_plugin_file( YOURLS_PLUGINDIR.'/'.$plugin ) ) {
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include_once( YOURLS_PLUGINDIR.'/'.$plugin );
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$ydb->plugins[] = $plugin;
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unset( $active_plugins[$key] );
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}
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}
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// $active_plugins should be empty now, if not, a plugin could not be find: remove it
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if( count( $active_plugins ) ) {
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yourls_update_option( 'active_plugins', $ydb->plugins );
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$message = yourls_n( 'Could not find and deactivated plugin :', 'Could not find and deactivated plugins :', count( $active_plugins ) );
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$missing = '<strong>'.join( '</strong>, <strong>', $active_plugins ).'</strong>';
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yourls_add_notice( $message .' '. $missing );
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}
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}
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/**
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* Check if a file is safe for inclusion (well, "safe", no guarantee)
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*
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* @param string $file Full pathname to a file
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* @return bool
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*/
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function yourls_validate_plugin_file( $file ) {
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if (
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false !== strpos( $file, '..' )
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OR
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false !== strpos( $file, './' )
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OR
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'plugin.php' !== substr( $file, -10 ) // a plugin must be named 'plugin.php'
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OR
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!is_readable( $file )
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)
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return false;
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return true;
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}
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/**
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* Activate a plugin
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*
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* @param string $plugin Plugin filename (full or relative to plugins directory)
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* @return mixed string if error or true if success
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*/
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function yourls_activate_plugin( $plugin ) {
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// validate file
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$plugin = yourls_plugin_basename( $plugin );
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$plugindir = yourls_sanitize_filename( YOURLS_PLUGINDIR );
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if( !yourls_validate_plugin_file( $plugindir.'/'.$plugin ) )
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return yourls__( 'Not a valid plugin file' );
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// check not activated already
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global $ydb;
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if( yourls_has_active_plugins() && in_array( $plugin, $ydb->plugins ) )
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return yourls__( 'Plugin already activated' );
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// attempt activation. TODO: uber cool fail proof sandbox like in WP.
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ob_start();
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include_once( YOURLS_PLUGINDIR.'/'.$plugin );
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if ( ob_get_length() > 0 ) {
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// there was some output: error
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// @codeCoverageIgnoreStart
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$output = ob_get_clean();
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return yourls_s( 'Plugin generated unexpected output. Error was: <br/><pre>%s</pre>', $output );
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// @codeCoverageIgnoreEnd
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}
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ob_end_clean();
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// so far, so good: update active plugin list
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$ydb->plugins[] = $plugin;
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yourls_update_option( 'active_plugins', $ydb->plugins );
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yourls_do_action( 'activated_plugin', $plugin );
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yourls_do_action( 'activated_' . $plugin );
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Deactivate a plugin
|
|
*
|
|
* @param string $plugin Plugin filename (full relative to plugins directory)
|
|
* @return mixed string if error or true if success
|
|
*/
|
|
function yourls_deactivate_plugin( $plugin ) {
|
|
$plugin = yourls_plugin_basename( $plugin );
|
|
|
|
// Check plugin is active
|
|
if( !yourls_is_active_plugin( $plugin ) )
|
|
return yourls__( 'Plugin not active' );
|
|
|
|
// Deactivate the plugin
|
|
global $ydb;
|
|
$key = array_search( $plugin, $ydb->plugins );
|
|
if( $key !== false ) {
|
|
array_splice( $ydb->plugins, $key, 1 );
|
|
}
|
|
|
|
yourls_update_option( 'active_plugins', $ydb->plugins );
|
|
yourls_do_action( 'deactivated_plugin', $plugin );
|
|
yourls_do_action( 'deactivated_' . $plugin );
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Return the path of a plugin file, relative to the plugins directory
|
|
*/
|
|
function yourls_plugin_basename( $file ) {
|
|
$file = yourls_sanitize_filename( $file );
|
|
$plugindir = yourls_sanitize_filename( YOURLS_PLUGINDIR );
|
|
$file = str_replace( $plugindir, '', $file );
|
|
return trim( $file, '/' );
|
|
}
|
|
|
|
/**
|
|
* Return the URL of the directory a plugin
|
|
*/
|
|
function yourls_plugin_url( $file ) {
|
|
$url = YOURLS_PLUGINURL . '/' . yourls_plugin_basename( $file );
|
|
if( yourls_is_ssl() or yourls_needs_ssl() )
|
|
$url = str_replace( 'http://', 'https://', $url );
|
|
return yourls_apply_filter( 'plugin_url', $url, $file );
|
|
}
|
|
|
|
/**
|
|
* Display list of links to plugin admin pages, if any
|
|
*/
|
|
function yourls_list_plugin_admin_pages() {
|
|
global $ydb;
|
|
|
|
if( !property_exists( $ydb, 'plugin_pages' ) || !$ydb->plugin_pages )
|
|
return;
|
|
|
|
$plugin_links = array();
|
|
foreach( (array)$ydb->plugin_pages as $plugin => $page ) {
|
|
$plugin_links[ $plugin ] = array(
|
|
'url' => yourls_admin_url( 'plugins.php?page='.$page['slug'] ),
|
|
'anchor' => $page['title'],
|
|
);
|
|
}
|
|
return $plugin_links;
|
|
}
|
|
|
|
/**
|
|
* Register a plugin administration page
|
|
*/
|
|
function yourls_register_plugin_page( $slug, $title, $function ) {
|
|
global $ydb;
|
|
|
|
if( !property_exists( $ydb, 'plugin_pages' ) || !$ydb->plugin_pages )
|
|
$ydb->plugin_pages = array();
|
|
|
|
$ydb->plugin_pages[ $slug ] = array(
|
|
'slug' => $slug,
|
|
'title' => $title,
|
|
'function' => $function,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Handle plugin administration page
|
|
*
|
|
*/
|
|
function yourls_plugin_admin_page( $plugin_page ) {
|
|
global $ydb;
|
|
|
|
// Check the plugin page is actually registered
|
|
if( !isset( $ydb->plugin_pages[$plugin_page] ) ) {
|
|
yourls_die( yourls__( 'This page does not exist. Maybe a plugin you thought was activated is inactive?' ), yourls__( 'Invalid link' ) );
|
|
}
|
|
|
|
// Draw the page itself
|
|
yourls_do_action( 'load-' . $plugin_page);
|
|
yourls_html_head( 'plugin_page_' . $plugin_page, $ydb->plugin_pages[$plugin_page]['title'] );
|
|
yourls_html_logo();
|
|
yourls_html_menu();
|
|
|
|
call_user_func( $ydb->plugin_pages[$plugin_page]['function'] );
|
|
|
|
yourls_html_footer();
|
|
}
|
|
|
|
|
|
/**
|
|
* Callback function: Sort plugins
|
|
*
|
|
* @link http://php.net/uasort
|
|
* @codeCoverageIgnore
|
|
*
|
|
* @param array $plugin_a
|
|
* @param array $plugin_b
|
|
* @return int 0, 1 or -1, see uasort()
|
|
*/
|
|
function yourls_plugins_sort_callback( $plugin_a, $plugin_b ) {
|
|
$orderby = yourls_apply_filter( 'plugins_sort_callback', 'Plugin Name' );
|
|
$order = yourls_apply_filter( 'plugins_sort_callback', 'ASC' );
|
|
|
|
$a = isset( $plugin_a[ $orderby ] ) ? $plugin_a[ $orderby ] : '';
|
|
$b = isset( $plugin_b[ $orderby ] ) ? $plugin_b[ $orderby ] : '';
|
|
|
|
if ( $a == $b )
|
|
return 0;
|
|
|
|
if ( 'DESC' == $order )
|
|
return ( $a < $b ) ? 1 : -1;
|
|
else
|
|
return ( $a < $b ) ? -1 : 1;
|
|
}
|