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<?php |
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/** |
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* IMPORTANT: |
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* This file will be loaded based on the order of the plugins/themes load. |
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* If there's a theme and a plugin using Freemius, the plugin's essential |
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* file will always load first. |
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* |
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* @package Freemius |
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* @copyright Copyright (c) 2015, Freemius, Inc. |
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* @license https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3 |
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* @since 1.1.5 |
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*/ |
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|
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if ( ! function_exists( 'fs_normalize_path' ) ) { |
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if ( function_exists( 'wp_normalize_path' ) ) { |
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/** |
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* Normalize a filesystem path. |
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* |
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* Replaces backslashes with forward slashes for Windows systems, and ensures |
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* no duplicate slashes exist. |
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* |
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* @param string $path Path to normalize. |
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* |
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* @return string Normalized path. |
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*/ |
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function fs_normalize_path( $path ) { |
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return wp_normalize_path( $path ); |
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} |
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} else { |
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function fs_normalize_path( $path ) { |
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$path = str_replace( '\\', '/', $path ); |
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$path = preg_replace( '|/+|', '/', $path ); |
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|
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return $path; |
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} |
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} |
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} |
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|
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require_once dirname( __FILE__ ) . '/supplements/fs-essential-functions-2.2.1.php'; |
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|
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#region Core Redirect (copied from BuddyPress) ----------------------------------------- |
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|
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if ( ! function_exists( 'fs_redirect' ) ) { |
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/** |
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* Redirects to another page, with a workaround for the IIS Set-Cookie bug. |
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* |
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* @link http://support.microsoft.com/kb/q176113/ |
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* @since 1.5.1 |
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* @uses apply_filters() Calls 'wp_redirect' hook on $location and $status. |
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* |
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* @param string $location The path to redirect to. |
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* @param bool $exit If true, exit after redirect (Since 1.2.1.5). |
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* @param int $status Status code to use. |
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* |
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* @return bool False if $location is not set |
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*/ |
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function fs_redirect( $location, $exit = true, $status = 302 ) { |
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global $is_IIS; |
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|
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$file = ''; |
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$line = ''; |
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if ( headers_sent($file, $line) ) { |
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if ( WP_FS__DEBUG_SDK && class_exists( 'FS_Admin_Notices' ) ) { |
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$notices = FS_Admin_Notices::instance( 'global' ); |
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|
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$notices->add( "Freemius failed to redirect the page because the headers have been already sent from line <b><code>{$line}</code></b> in file <b><code>{$file}</code></b>. If it's unexpected, it usually happens due to invalid space and/or EOL character(s).", 'Oops...', 'error' ); |
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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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if ( defined( 'DOING_AJAX' ) ) { |
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// Don't redirect on AJAX calls. |
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return false; |
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} |
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|
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if ( ! $location ) // allows the wp_redirect filter to cancel a redirect |
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{ |
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return false; |
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} |
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|
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$location = fs_sanitize_redirect( $location ); |
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|
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if ( $is_IIS ) { |
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header( "Refresh: 0;url=$location" ); |
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} else { |
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if ( php_sapi_name() != 'cgi-fcgi' ) { |
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status_header( $status ); |
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} // This causes problems on IIS and some FastCGI setups |
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header( "Location: $location" ); |
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} |
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|
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if ( $exit ) { |
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exit(); |
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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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if ( ! function_exists( 'fs_sanitize_redirect' ) ) { |
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/** |
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* Sanitizes a URL for use in a redirect. |
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* |
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* @since 2.3 |
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* |
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* @param string $location |
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* |
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* @return string redirect-sanitized URL |
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*/ |
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function fs_sanitize_redirect( $location ) { |
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$location = preg_replace( '|[^a-z0-9-~+_.?#=&;,/:%!]|i', '', $location ); |
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$location = fs_kses_no_null( $location ); |
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|
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// remove %0d and %0a from location |
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$strip = array( '%0d', '%0a' ); |
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$found = true; |
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while ( $found ) { |
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$found = false; |
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foreach ( (array) $strip as $val ) { |
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while ( strpos( $location, $val ) !== false ) { |
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$found = true; |
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$location = str_replace( $val, '', $location ); |
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} |
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} |
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} |
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|
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return $location; |
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} |
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} |
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|
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if ( ! function_exists( 'fs_kses_no_null' ) ) { |
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/** |
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* Removes any NULL characters in $string. |
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* |
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* @since 1.0.0 |
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* |
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* @param string $string |
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* |
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* @return string |
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*/ |
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function fs_kses_no_null( $string ) { |
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$string = preg_replace( '/\0+/', '', $string ); |
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$string = preg_replace( '/(\\\\0)+/', '', $string ); |
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|
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return $string; |
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} |
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} |
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} |
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|
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#endregion Core Redirect (copied from BuddyPress) ----------------------------------------- |
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|
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if ( ! function_exists( 'fs_get_ip' ) ) { |
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/** |
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* Get server IP. |
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* |
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* @since 2.5.1 This method returns the server IP. |
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* |
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* @author Vova Feldman (@svovaf) |
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* @since 1.1.2 |
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* |
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* @return string|null |
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*/ |
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function fs_get_ip() { |
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return empty( $_SERVER[ 'SERVER_ADDR' ] ) ? |
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null : |
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$_SERVER[ 'SERVER_ADDR' ]; |
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} |
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} |
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|
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if ( ! function_exists( 'fs_find_caller_plugin_file' ) ) { |
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/** |
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* Leverage backtrace to find caller plugin main file path. |
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* |
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* @author Vova Feldman (@svovaf) |
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* @since 1.0.6 |
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* |
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* @return string |
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*/ |
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function fs_find_caller_plugin_file() { |
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/** |
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* All the code below will be executed once on activation. |
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* If the user changes the main plugin's file name, the file_exists() |
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* will catch it. |
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*/ |
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if ( ! function_exists( 'get_plugins' ) ) { |
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require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
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} |
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|
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$all_plugins = fs_get_plugins( true ); |
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$all_plugins_paths = array(); |
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|
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// Get active plugin's main files real full names (might be symlinks). |
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foreach ( $all_plugins as $relative_path => $data ) { |
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$all_plugins_paths[] = fs_normalize_path( realpath( WP_PLUGIN_DIR . '/' . $relative_path ) ); |
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} |
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|
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$plugin_file = null; |
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for ( $i = 1, $bt = debug_backtrace(), $len = count( $bt ); $i < $len; $i ++ ) { |
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if ( empty( $bt[ $i ]['file'] ) ) { |
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continue; |
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} |
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|
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if ( in_array( fs_normalize_path( $bt[ $i ]['file'] ), $all_plugins_paths ) ) { |
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$plugin_file = $bt[ $i ]['file']; |
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break; |
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} |
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} |
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|
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if ( is_null( $plugin_file ) ) { |
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// Throw an error to the developer in case of some edge case dev environment. |
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wp_die( |
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'Freemius SDK couldn\'t find the plugin\'s main file. Please contact sdk@freemius.com with the current error.', |
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'Error', |
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array( 'back_link' => true ) |
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); |
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} |
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|
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return $plugin_file; |
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} |
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} |
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|
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require_once dirname( __FILE__ ) . '/supplements/fs-essential-functions-1.1.7.1.php'; |
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|
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if ( ! function_exists( 'fs_update_sdk_newest_version' ) ) { |
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/** |
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* Update SDK newest version reference. |
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* |
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* @author Vova Feldman (@svovaf) |
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* @since 1.1.6 |
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* |
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* @param string $sdk_relative_path |
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* @param string|bool $plugin_file |
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* |
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* @global $fs_active_plugins |
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*/ |
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function fs_update_sdk_newest_version( $sdk_relative_path, $plugin_file = false ) { |
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/** |
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* If there is a plugin running an older version of FS (1.2.1 or below), the `fs_update_sdk_newest_version()` |
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* function in the older version will be used instead of this one. But since the older version is using |
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* the `is_plugin_active` function to check if a plugin is active, passing the theme's `plugin_path` to the |
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* `is_plugin_active` function will return false since the path is not a plugin path, so `in_activation` will be |
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* `true` for theme modules and the upgrading of the SDK version to 1.2.2 or newer version will work fine. |
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* |
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* Future versions that will call this function will use the proper logic here instead of just relying on the |
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* `is_plugin_active` function to fail for themes. |
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* |
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* @author Leo Fajardo (@leorw) |
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* @since 1.2.2 |
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*/ |
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|
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global $fs_active_plugins; |
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|
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$newest_sdk = $fs_active_plugins->plugins[ $sdk_relative_path ]; |
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|
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if ( ! is_string( $plugin_file ) ) { |
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$plugin_file = plugin_basename( fs_find_caller_plugin_file() ); |
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} |
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|
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if ( ! isset( $newest_sdk->type ) || 'theme' !== $newest_sdk->type ) { |
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if ( ! function_exists( 'is_plugin_active' ) ) { |
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require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
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} |
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|
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$in_activation = ( ! is_plugin_active( $plugin_file ) ); |
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} else { |
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$theme = wp_get_theme(); |
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$in_activation = ( $newest_sdk->plugin_path == $theme->stylesheet ); |
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} |
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|
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$fs_active_plugins->newest = (object) array( |
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'plugin_path' => $plugin_file, |
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'sdk_path' => $sdk_relative_path, |
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'version' => $newest_sdk->version, |
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'in_activation' => $in_activation, |
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'timestamp' => time(), |
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); |
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|
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// Update DB with latest SDK version and path. |
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update_option( 'fs_active_plugins', $fs_active_plugins ); |
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} |
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} |
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|
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if ( ! function_exists( 'fs_newest_sdk_plugin_first' ) ) { |
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/** |
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* Reorder the plugins load order so the plugin with the newest Freemius SDK is loaded first. |
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* |
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* @author Vova Feldman (@svovaf) |
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* @since 1.1.6 |
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* |
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* @return bool Was plugin order changed. Return false if plugin was loaded first anyways. |
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* |
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* @global $fs_active_plugins |
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*/ |
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function fs_newest_sdk_plugin_first() { |
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global $fs_active_plugins; |
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|
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/** |
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* @todo Multi-site network activated plugin are always loaded prior to site plugins so if there's a plugin activated in the network mode that has an older version of the SDK of another plugin which is site activated that has new SDK version, the fs-essential-functions.php will be loaded from the older SDK. Same thing about MU plugins (loaded even before network activated plugins). |
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* |
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* @link https://github.com/Freemius/wordpress-sdk/issues/26 |
| 301 |
*/ |
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|
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$newest_sdk_plugin_path = $fs_active_plugins->newest->plugin_path; |
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|
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$active_plugins = get_option( 'active_plugins', array() ); |
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$updated_active_plugins = array( $newest_sdk_plugin_path ); |
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|
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$plugin_found = false; |
| 309 |
$is_first_path = true; |
| 310 |
|
| 311 |
foreach ( $active_plugins as $key => $plugin_path ) { |
| 312 |
if ( $plugin_path === $newest_sdk_plugin_path ) { |
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if ( $is_first_path ) { |
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// if it's the first plugin already, no need to continue |
| 315 |
return false; |
| 316 |
} |
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|
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$plugin_found = true; |
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|
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// Skip the plugin (it is already added as the 1st item of $updated_active_plugins). |
| 321 |
continue; |
| 322 |
} |
| 323 |
|
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$updated_active_plugins[] = $plugin_path; |
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|
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if ( $is_first_path ) { |
| 327 |
$is_first_path = false; |
| 328 |
} |
| 329 |
} |
| 330 |
|
| 331 |
if ( $plugin_found ) { |
| 332 |
update_option( 'active_plugins', $updated_active_plugins ); |
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|
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return true; |
| 335 |
} |
| 336 |
|
| 337 |
if ( is_multisite() ) { |
| 338 |
// Plugin is network active. |
| 339 |
$network_active_plugins = get_site_option( 'active_sitewide_plugins', array() ); |
| 340 |
|
| 341 |
if ( isset( $network_active_plugins[ $newest_sdk_plugin_path ] ) ) { |
| 342 |
reset( $network_active_plugins ); |
| 343 |
if ( $newest_sdk_plugin_path === key( $network_active_plugins ) ) { |
| 344 |
// Plugin is already activated first on the network level. |
| 345 |
return false; |
| 346 |
} else { |
| 347 |
$time = $network_active_plugins[ $newest_sdk_plugin_path ]; |
| 348 |
|
| 349 |
// Remove plugin from its current position. |
| 350 |
unset( $network_active_plugins[ $newest_sdk_plugin_path ] ); |
| 351 |
|
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// Set it to be included first. |
| 353 |
$network_active_plugins = array( $newest_sdk_plugin_path => $time ) + $network_active_plugins; |
| 354 |
|
| 355 |
update_site_option( 'active_sitewide_plugins', $network_active_plugins ); |
| 356 |
|
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return true; |
| 358 |
} |
| 359 |
} |
| 360 |
} |
| 361 |
|
| 362 |
return false; |
| 363 |
} |
| 364 |
} |
| 365 |
|
| 366 |
if ( ! function_exists( 'fs_fallback_to_newest_active_sdk' ) ) { |
| 367 |
/** |
| 368 |
* Go over all Freemius SDKs in the system and find and "remember" |
| 369 |
* the newest SDK which is associated with an active plugin. |
| 370 |
* |
| 371 |
* @author Vova Feldman (@svovaf) |
| 372 |
* @since 1.1.6 |
| 373 |
* |
| 374 |
* @global $fs_active_plugins |
| 375 |
*/ |
| 376 |
function fs_fallback_to_newest_active_sdk() { |
| 377 |
global $fs_active_plugins; |
| 378 |
|
| 379 |
/** |
| 380 |
* @var object $newest_sdk_data |
| 381 |
*/ |
| 382 |
$newest_sdk_data = null; |
| 383 |
$newest_sdk_path = null; |
| 384 |
|
| 385 |
foreach ( $fs_active_plugins->plugins as $sdk_relative_path => $data ) { |
| 386 |
if ( is_null( $newest_sdk_data ) || version_compare( $data->version, $newest_sdk_data->version, '>' ) |
| 387 |
) { |
| 388 |
// If plugin inactive or SDK starter file doesn't exist, remove SDK reference. |
| 389 |
if ( 'plugin' === $data->type ) { |
| 390 |
$is_module_active = is_plugin_active( $data->plugin_path ); |
| 391 |
} else { |
| 392 |
$active_theme = wp_get_theme(); |
| 393 |
$is_module_active = ( $data->plugin_path === $active_theme->get_template() ); |
| 394 |
} |
| 395 |
|
| 396 |
$is_sdk_exists = file_exists( fs_normalize_path( WP_PLUGIN_DIR . '/' . $sdk_relative_path . '/start.php' ) ); |
| 397 |
|
| 398 |
if ( ! $is_module_active || ! $is_sdk_exists ) { |
| 399 |
unset( $fs_active_plugins->plugins[ $sdk_relative_path ] ); |
| 400 |
|
| 401 |
// No need to store the data since it will be stored in fs_update_sdk_newest_version() |
| 402 |
// or explicitly with update_option(). |
| 403 |
} else { |
| 404 |
$newest_sdk_data = $data; |
| 405 |
$newest_sdk_path = $sdk_relative_path; |
| 406 |
} |
| 407 |
} |
| 408 |
} |
| 409 |
|
| 410 |
if ( is_null( $newest_sdk_data ) ) { |
| 411 |
// Couldn't find any SDK reference. |
| 412 |
$fs_active_plugins = new stdClass(); |
| 413 |
update_option( 'fs_active_plugins', $fs_active_plugins ); |
| 414 |
} else { |
| 415 |
fs_update_sdk_newest_version( $newest_sdk_path, $newest_sdk_data->plugin_path ); |
| 416 |
} |
| 417 |
} |
| 418 |
} |
