| 1 | <?php |
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| 2 | /** |
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| 3 | * IMPORTANT: |
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| 4 | * This file will be loaded based on the order of the plugins/themes load. |
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| 5 | * If there's a theme and a plugin using Freemius, the plugin's essential |
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| 6 | * file will always load first. |
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| 7 | * |
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| 8 | * @package Freemius |
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| 9 | * @copyright Copyright (c) 2015, Freemius, Inc. |
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| 10 | * @license https://www.gnu.org/licenses/gpl-3.0.html GNU General Public License Version 3 |
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| 11 | * @since 1.1.5 |
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| 12 | */ |
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| 13 | |
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| 14 | if ( ! function_exists( 'fs_normalize_path' ) ) { |
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| 15 | if ( function_exists( 'wp_normalize_path' ) ) { |
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| 16 | /** |
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| 17 | * Normalize a filesystem path. |
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| 18 | * |
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| 19 | * Replaces backslashes with forward slashes for Windows systems, and ensures |
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| 20 | * no duplicate slashes exist. |
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| 21 | * |
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| 22 | * @param string $path Path to normalize. |
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| 23 | * |
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| 24 | * @return string Normalized path. |
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| 25 | */ |
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| 26 | function fs_normalize_path( $path ) { |
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| 27 | return wp_normalize_path( $path ); |
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| 28 | } |
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| 29 | } else { |
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| 30 | function fs_normalize_path( $path ) { |
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| 31 | $path = str_replace( '\\', '/', $path ); |
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| 32 | $path = preg_replace( '|/+|', '/', $path ); |
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| 33 | |
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| 34 | return $path; |
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| 35 | } |
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| 36 | } |
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| 37 | } |
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| 38 | |
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| 39 | require_once dirname( __FILE__ ) . '/supplements/fs-essential-functions-2.2.1.php'; |
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| 40 | |
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| 41 | #region Core Redirect (copied from BuddyPress) ----------------------------------------- |
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| 42 | |
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| 43 | if ( ! function_exists( 'fs_redirect' ) ) { |
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| 44 | /** |
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| 45 | * Redirects to another page, with a workaround for the IIS Set-Cookie bug. |
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| 46 | * |
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| 47 | * @link http://support.microsoft.com/kb/q176113/ |
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| 48 | * @since 1.5.1 |
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| 49 | * @uses apply_filters() Calls 'wp_redirect' hook on $location and $status. |
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| 50 | * |
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| 51 | * @param string $location The path to redirect to. |
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| 52 | * @param bool $exit If true, exit after redirect (Since 1.2.1.5). |
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| 53 | * @param int $status Status code to use. |
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| 54 | * |
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| 55 | * @return bool False if $location is not set |
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| 56 | */ |
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| 57 | function fs_redirect( $location, $exit = true, $status = 302 ) { |
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| 58 | global $is_IIS; |
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| 59 | |
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| 60 | $file = ''; |
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| 61 | $line = ''; |
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| 62 | if ( headers_sent($file, $line) ) { |
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| 63 | if ( WP_FS__DEBUG_SDK && class_exists( 'FS_Admin_Notices' ) ) { |
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| 64 | $notices = FS_Admin_Notices::instance( 'global' ); |
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| 65 | |
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| 66 | $notices->add( "Freemius failed to redirect the page because the headers have been already sent from line <b><code>{$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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| 67 | } |
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| 68 | |
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| 69 | return false; |
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| 70 | } |
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| 71 | |
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| 72 | if ( defined( 'DOING_AJAX' ) ) { |
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| 73 | // Don't redirect on AJAX calls. |
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| 74 | return false; |
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| 75 | } |
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| 76 | |
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| 77 | if ( ! $location ) // allows the wp_redirect filter to cancel a redirect |
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| 78 | { |
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| 79 | return false; |
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| 80 | } |
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| 81 | |
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| 82 | $location = fs_sanitize_redirect( $location ); |
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| 83 | |
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| 84 | if ( $is_IIS ) { |
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| 85 | header( "Refresh: 0;url=$location" ); |
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| 86 | } else { |
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| 87 | if ( php_sapi_name() != 'cgi-fcgi' ) { |
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| 88 | status_header( $status ); |
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| 89 | } // This causes problems on IIS and some FastCGI setups |
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| 90 | header( "Location: $location" ); |
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| 91 | } |
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| 92 | |
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| 93 | if ( $exit ) { |
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| 94 | exit(); |
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| 95 | } |
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| 96 | |
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| 97 | return true; |
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| 98 | } |
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| 99 | |
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| 100 | if ( ! function_exists( 'fs_sanitize_redirect' ) ) { |
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| 101 | /** |
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| 102 | * Sanitizes a URL for use in a redirect. |
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| 103 | * |
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| 104 | * @since 2.3 |
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| 105 | * |
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| 106 | * @param string $location |
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| 107 | * |
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| 108 | * @return string redirect-sanitized URL |
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| 109 | */ |
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| 110 | function fs_sanitize_redirect( $location ) { |
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| 111 | $location = preg_replace( '|[^a-z0-9-~+_.?#=&;,/:%!]|i', '', $location ); |
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| 112 | $location = fs_kses_no_null( $location ); |
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| 113 | |
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| 114 | // remove %0d and %0a from location |
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| 115 | $strip = array( '%0d', '%0a' ); |
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| 116 | $found = true; |
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| 117 | while ( $found ) { |
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| 118 | $found = false; |
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| 119 | foreach ( (array) $strip as $val ) { |
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| 120 | while ( strpos( $location, $val ) !== false ) { |
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| 121 | $found = true; |
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| 122 | $location = str_replace( $val, '', $location ); |
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| 123 | } |
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| 124 | } |
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| 125 | } |
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| 126 | |
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| 127 | return $location; |
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| 128 | } |
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| 129 | } |
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| 130 | |
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| 131 | if ( ! function_exists( 'fs_kses_no_null' ) ) { |
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| 132 | /** |
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| 133 | * Removes any NULL characters in $string. |
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| 134 | * |
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| 135 | * @since 1.0.0 |
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| 136 | * |
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| 137 | * @param string $string |
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| 138 | * |
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| 139 | * @return string |
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| 140 | */ |
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| 141 | function fs_kses_no_null( $string ) { |
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| 142 | $string = preg_replace( '/\0+/', '', $string ); |
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| 143 | $string = preg_replace( '/(\\\\0)+/', '', $string ); |
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| 144 | |
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| 145 | return $string; |
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| 146 | } |
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| 147 | } |
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| 148 | } |
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| 149 | |
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| 150 | #endregion Core Redirect (copied from BuddyPress) ----------------------------------------- |
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| 151 | |
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| 152 | if ( ! function_exists( 'fs_get_ip' ) ) { |
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| 153 | /** |
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| 154 | * Get server IP. |
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| 155 | * |
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| 156 | * @since 2.5.1 This method returns the server IP. |
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| 157 | * |
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| 158 | * @author Vova Feldman (@svovaf) |
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| 159 | * @since 1.1.2 |
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| 160 | * |
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| 161 | * @return string|null |
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| 162 | */ |
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| 163 | function fs_get_ip() { |
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| 164 | return empty( $_SERVER[ 'SERVER_ADDR' ] ) ? |
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| 165 | null : |
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| 166 | $_SERVER[ 'SERVER_ADDR' ]; |
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| 167 | } |
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| 168 | } |
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| 169 | |
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| 170 | if ( ! function_exists( 'fs_find_caller_plugin_file' ) ) { |
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| 171 | /** |
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| 172 | * Leverage backtrace to find caller plugin main file path. |
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| 173 | * |
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| 174 | * @author Vova Feldman (@svovaf) |
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| 175 | * @since 1.0.6 |
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| 176 | * |
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| 177 | * @return string |
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| 178 | */ |
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| 179 | function fs_find_caller_plugin_file() { |
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| 180 | /** |
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| 181 | * All the code below will be executed once on activation. |
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| 182 | * If the user changes the main plugin's file name, the file_exists() |
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| 183 | * will catch it. |
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| 184 | */ |
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| 185 | if ( ! function_exists( 'get_plugins' ) ) { |
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| 186 | require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
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| 187 | } |
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| 188 | |
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| 189 | $all_plugins = fs_get_plugins( true ); |
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| 190 | $all_plugins_paths = array(); |
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| 191 | |
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| 192 | // Get active plugin's main files real full names (might be symlinks). |
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| 193 | foreach ( $all_plugins as $relative_path => $data ) { |
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| 194 | $all_plugins_paths[] = fs_normalize_path( realpath( WP_PLUGIN_DIR . '/' . $relative_path ) ); |
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| 195 | } |
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| 196 | |
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| 197 | $plugin_file = null; |
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| 198 | for ( $i = 1, $bt = debug_backtrace(), $len = count( $bt ); $i < $len; $i ++ ) { |
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| 199 | if ( empty( $bt[ $i ]['file'] ) ) { |
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| 200 | continue; |
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| 201 | } |
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| 202 | |
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| 203 | if ( in_array( fs_normalize_path( $bt[ $i ]['file'] ), $all_plugins_paths ) ) { |
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| 204 | $plugin_file = $bt[ $i ]['file']; |
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| 205 | break; |
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| 206 | } |
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| 207 | } |
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| 208 | |
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| 209 | if ( is_null( $plugin_file ) ) { |
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| 210 | // Throw an error to the developer in case of some edge case dev environment. |
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| 211 | wp_die( |
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| 212 | 'Freemius SDK couldn\'t find the plugin\'s main file. Please contact sdk@freemius.com with the current error.', |
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| 213 | 'Error', |
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| 214 | array( 'back_link' => true ) |
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| 215 | ); |
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| 216 | } |
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| 217 | |
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| 218 | return $plugin_file; |
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| 219 | } |
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| 220 | } |
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| 221 | |
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| 222 | require_once dirname( __FILE__ ) . '/supplements/fs-essential-functions-1.1.7.1.php'; |
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| 223 | |
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| 224 | if ( ! function_exists( 'fs_update_sdk_newest_version' ) ) { |
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| 225 | /** |
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| 226 | * Update SDK newest version reference. |
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| 227 | * |
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| 228 | * @author Vova Feldman (@svovaf) |
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| 229 | * @since 1.1.6 |
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| 230 | * |
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| 231 | * @param string $sdk_relative_path |
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| 232 | * @param string|bool $plugin_file |
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| 233 | * |
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| 234 | * @global $fs_active_plugins |
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| 235 | */ |
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| 236 | function fs_update_sdk_newest_version( $sdk_relative_path, $plugin_file = false ) { |
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| 237 | /** |
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| 238 | * 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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| 239 | * function in the older version will be used instead of this one. But since the older version is using |
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| 240 | * the `is_plugin_active` function to check if a plugin is active, passing the theme's `plugin_path` to the |
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| 241 | * `is_plugin_active` function will return false since the path is not a plugin path, so `in_activation` will be |
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| 242 | * `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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| 243 | * |
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| 244 | * Future versions that will call this function will use the proper logic here instead of just relying on the |
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| 245 | * `is_plugin_active` function to fail for themes. |
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| 246 | * |
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| 247 | * @author Leo Fajardo (@leorw) |
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| 248 | * @since 1.2.2 |
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| 249 | */ |
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| 250 | |
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| 251 | global $fs_active_plugins; |
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| 252 | |
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| 253 | $newest_sdk = $fs_active_plugins->plugins[ $sdk_relative_path ]; |
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| 254 | |
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| 255 | if ( ! is_string( $plugin_file ) ) { |
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| 256 | $plugin_file = plugin_basename( fs_find_caller_plugin_file() ); |
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| 257 | } |
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| 258 | |
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| 259 | if ( ! isset( $newest_sdk->type ) || 'theme' !== $newest_sdk->type ) { |
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| 260 | if ( ! function_exists( 'is_plugin_active' ) ) { |
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| 261 | require_once ABSPATH . 'wp-admin/includes/plugin.php'; |
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| 262 | } |
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| 263 | |
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| 264 | $in_activation = ( ! is_plugin_active( $plugin_file ) ); |
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| 265 | } else { |
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| 266 | $theme = wp_get_theme(); |
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| 267 | $in_activation = ( $newest_sdk->plugin_path == $theme->stylesheet ); |
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| 268 | } |
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| 269 | |
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| 270 | $fs_active_plugins->newest = (object) array( |
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| 271 | 'plugin_path' => $plugin_file, |
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| 272 | 'sdk_path' => $sdk_relative_path, |
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| 273 | 'version' => $newest_sdk->version, |
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| 274 | 'in_activation' => $in_activation, |
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| 275 | 'timestamp' => time(), |
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| 276 | ); |
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| 277 | |
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| 278 | // Update DB with latest SDK version and path. |
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| 279 | update_option( 'fs_active_plugins', $fs_active_plugins ); |
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| 280 | } |
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| 281 | } |
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| 282 | |
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| 283 | if ( ! function_exists( 'fs_newest_sdk_plugin_first' ) ) { |
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| 284 | /** |
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| 285 | * Reorder the plugins load order so the plugin with the newest Freemius SDK is loaded first. |
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| 286 | * |
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| 287 | * @author Vova Feldman (@svovaf) |
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| 288 | * @since 1.1.6 |
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| 289 | * |
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| 290 | * @return bool Was plugin order changed. Return false if plugin was loaded first anyways. |
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| 291 | * |
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| 292 | * @global $fs_active_plugins |
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| 293 | */ |
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| 294 | function fs_newest_sdk_plugin_first() { |
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| 295 | global $fs_active_plugins; |
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| 296 | |
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| 297 | /** |
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| 298 | * @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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| 299 | * |
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| 300 | * @link https://github.com/Freemius/wordpress-sdk/issues/26 |
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| 301 | */ |
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| 302 | |
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| 303 | $newest_sdk_plugin_path = $fs_active_plugins->newest->plugin_path; |
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| 304 | |
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| 305 | $active_plugins = get_option( 'active_plugins', array() ); |
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| 306 | $updated_active_plugins = array( $newest_sdk_plugin_path ); |
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| 307 | |
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| 308 | $plugin_found = false; |
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| 309 | $is_first_path = true; |
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| 310 | |
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| 311 | foreach ( $active_plugins as $key => $plugin_path ) { |
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| 312 | if ( $plugin_path === $newest_sdk_plugin_path ) { |
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| 313 | if ( $is_first_path ) { |
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| 314 | // if it's the first plugin already, no need to continue |
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| 315 | return false; |
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| 316 | } |
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| 317 | |
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| 318 | $plugin_found = true; |
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| 319 | |
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| 320 | // Skip the plugin (it is already added as the 1st item of $updated_active_plugins). |
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| 321 | continue; |
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| 322 | } |
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| 323 | |
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| 324 | $updated_active_plugins[] = $plugin_path; |
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| 325 | |
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| 326 | if ( $is_first_path ) { |
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| 327 | $is_first_path = false; |
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| 328 | } |
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| 329 | } |
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| 330 | |
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| 331 | if ( $plugin_found ) { |
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| 332 | update_option( 'active_plugins', $updated_active_plugins ); |
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| 333 | |
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| 334 | return true; |
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| 335 | } |
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| 336 | |
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| 337 | if ( is_multisite() ) { |
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| 338 | // Plugin is network active. |
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| 339 | $network_active_plugins = get_site_option( 'active_sitewide_plugins', array() ); |
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| 340 | |
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| 341 | if ( isset( $network_active_plugins[ $newest_sdk_plugin_path ] ) ) { |
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| 342 | reset( $network_active_plugins ); |
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| 343 | if ( $newest_sdk_plugin_path === key( $network_active_plugins ) ) { |
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| 344 | // Plugin is already activated first on the network level. |
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| 345 | return false; |
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| 346 | } else { |
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| 347 | $time = $network_active_plugins[ $newest_sdk_plugin_path ]; |
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| 348 | |
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| 349 | // Remove plugin from its current position. |
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| 350 | unset( $network_active_plugins[ $newest_sdk_plugin_path ] ); |
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| 351 | |
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| 352 | // Set it to be included first. |
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| 353 | $network_active_plugins = array( $newest_sdk_plugin_path => $time ) + $network_active_plugins; |
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| 354 | |
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| 355 | update_site_option( 'active_sitewide_plugins', $network_active_plugins ); |
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| 356 | |
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| 357 | return true; |
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| 358 | } |
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| 359 | } |
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| 360 | } |
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| 361 | |
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| 362 | return false; |
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| 363 | } |
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| 364 | } |
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| 365 | |
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| 366 | if ( ! function_exists( 'fs_fallback_to_newest_active_sdk' ) ) { |
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| 367 | /** |
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| 368 | * Go over all Freemius SDKs in the system and find and "remember" |
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| 369 | * the newest SDK which is associated with an active plugin. |
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| 370 | * |
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| 371 | * @author Vova Feldman (@svovaf) |
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| 372 | * @since 1.1.6 |
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| 373 | * |
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| 374 | * @global $fs_active_plugins |
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| 375 | */ |
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| 376 | function fs_fallback_to_newest_active_sdk() { |
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| 377 | global $fs_active_plugins; |
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| 378 | |
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| 379 | /** |
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| 380 | * @var object $newest_sdk_data |
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| 381 | */ |
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| 382 | $newest_sdk_data = null; |
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| 383 | $newest_sdk_path = null; |
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| 384 | |
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| 385 | foreach ( $fs_active_plugins->plugins as $sdk_relative_path => $data ) { |
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| 386 | if ( is_null( $newest_sdk_data ) || version_compare( $data->version, $newest_sdk_data->version, '>' ) |
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| 387 | ) { |
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| 388 | // If plugin inactive or SDK starter file doesn't exist, remove SDK reference. |
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| 389 | if ( 'plugin' === $data->type ) { |
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| 390 | $is_module_active = is_plugin_active( $data->plugin_path ); |
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| 391 | } else { |
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| 392 | $active_theme = wp_get_theme(); |
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| 393 | $is_module_active = ( $data->plugin_path === $active_theme->get_template() ); |
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| 394 | } |
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| 395 | |
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| 396 | $is_sdk_exists = file_exists( fs_normalize_path( WP_PLUGIN_DIR . '/' . $sdk_relative_path . '/start.php' ) ); |
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| 397 | |
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| 398 | if ( ! $is_module_active || ! $is_sdk_exists ) { |
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| 399 | unset( $fs_active_plugins->plugins[ $sdk_relative_path ] ); |
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| 400 | |
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| 401 | // No need to store the data since it will be stored in fs_update_sdk_newest_version() |
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| 402 | // or explicitly with update_option(). |
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| 403 | } else { |
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| 404 | $newest_sdk_data = $data; |
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| 405 | $newest_sdk_path = $sdk_relative_path; |
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| 406 | } |
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| 407 | } |
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| 408 | } |
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| 409 | |
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| 410 | if ( is_null( $newest_sdk_data ) ) { |
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| 411 | // Couldn't find any SDK reference. |
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| 412 | $fs_active_plugins = new stdClass(); |
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| 413 | update_option( 'fs_active_plugins', $fs_active_plugins ); |
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| 414 | } else { |
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| 415 | fs_update_sdk_newest_version( $newest_sdk_path, $newest_sdk_data->plugin_path ); |
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| 416 | } |
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| 417 | } |
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| 418 | } |
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