Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
| Total | |
90.00% |
54 / 60 |
|
75.00% |
6 / 8 |
CRAP | |
0.00% |
0 / 1 |
| Waf_Standalone_Bootstrap | |
90.00% |
54 / 60 |
|
75.00% |
6 / 8 |
25.62 | |
0.00% |
0 / 1 |
| __construct | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
1 | |||
| guard_against_missing_abspath | |
100.00% |
2 / 2 |
|
100.00% |
1 / 1 |
2 | |||
| initialize_constants | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| initialize_filesystem | |
66.67% |
2 / 3 |
|
0.00% |
0 / 1 |
2.15 | |||
| locate_classmap_file | |
75.00% |
15 / 20 |
|
0.00% |
0 / 1 |
10.27 | |||
| get_bootstrap_file_path | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
1 | |||
| get_entrypoint | |
100.00% |
1 / 1 |
|
100.00% |
1 / 1 |
2 | |||
| generate | |
100.00% |
30 / 30 |
|
100.00% |
1 / 1 |
7 | |||
| 1 | <?php |
| 2 | /** |
| 3 | * Handles generation and deletion of the bootstrap for the standalone WAF mode. |
| 4 | * |
| 5 | * @package automattic/jetpack-waf |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Waf; |
| 9 | |
| 10 | use Composer\InstalledVersions; |
| 11 | |
| 12 | /** |
| 13 | * Handles the bootstrap. |
| 14 | * |
| 15 | * @phan-constructor-used-for-side-effects |
| 16 | */ |
| 17 | class Waf_Standalone_Bootstrap { |
| 18 | |
| 19 | /** |
| 20 | * Ensures that constants are initialized if this class is used. |
| 21 | * |
| 22 | * @return void |
| 23 | */ |
| 24 | public function __construct() { |
| 25 | $this->guard_against_missing_abspath(); |
| 26 | $this->initialize_constants(); |
| 27 | } |
| 28 | |
| 29 | /** |
| 30 | * Ensures that this class is not used unless we are in the right context. |
| 31 | * |
| 32 | * @throws Waf_Exception If we are outside of WordPress. |
| 33 | * |
| 34 | * @return void |
| 35 | */ |
| 36 | private function guard_against_missing_abspath() { |
| 37 | |
| 38 | if ( ! defined( 'ABSPATH' ) ) { |
| 39 | throw new Waf_Exception( 'Cannot generate the WAF bootstrap if we are not running in WordPress context.' ); |
| 40 | } |
| 41 | } |
| 42 | |
| 43 | /** |
| 44 | * Initializes the constants required for generating the bootstrap, if they have not been initialized yet. |
| 45 | * |
| 46 | * @return void |
| 47 | */ |
| 48 | private function initialize_constants() { |
| 49 | Waf_Constants::initialize_constants(); |
| 50 | } |
| 51 | |
| 52 | /** |
| 53 | * Initialized the WP filesystem and serves as a mocking hook for tests. |
| 54 | * |
| 55 | * Should only be implemented after the wp_loaded action hook: |
| 56 | * |
| 57 | * @link https://developer.wordpress.org/reference/functions/wp_filesystem/#more-information |
| 58 | * |
| 59 | * @return void |
| 60 | */ |
| 61 | protected function initialize_filesystem() { |
| 62 | if ( ! function_exists( '\\WP_Filesystem' ) ) { |
| 63 | require_once ABSPATH . 'wp-admin/includes/file.php'; |
| 64 | } |
| 65 | |
| 66 | WP_Filesystem(); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Finds the path to Composer's generated classmap, which the generated bootstrap file uses to autoload WAF classes. |
| 71 | * |
| 72 | * @throws Waf_Exception In case the classmap file cannot be found. |
| 73 | * |
| 74 | * @return string |
| 75 | */ |
| 76 | private function locate_classmap_file() { |
| 77 | global $jetpack_autoloader_loader; |
| 78 | |
| 79 | $vendor_dirs = array(); |
| 80 | |
| 81 | // Try the Jetpack autoloader. |
| 82 | if ( isset( $jetpack_autoloader_loader ) ) { |
| 83 | $class_file = $jetpack_autoloader_loader->find_class_file( Waf_Runner::class ); |
| 84 | if ( $class_file ) { |
| 85 | $vendor_dirs[] = dirname( $class_file, 5 ) . '/vendor'; |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | // Try Composer's autoloader. |
| 90 | if ( is_callable( array( InstalledVersions::class, 'getInstallPath' ) ) |
| 91 | && InstalledVersions::isInstalled( 'automattic/jetpack-waf' ) |
| 92 | ) { |
| 93 | $package_file = InstalledVersions::getInstallPath( 'automattic/jetpack-waf' ); |
| 94 | if ( substr( $package_file, -23 ) === '/automattic/jetpack-waf' ) { |
| 95 | $vendor_dirs[] = dirname( $package_file, 3 ) . '/vendor'; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | // Guess. First look for being in a `vendor/automattic/jetpack-waf/src/', then see if we're standalone with our own vendor dir. |
| 100 | $vendor_dirs[] = dirname( __DIR__, 4 ) . '/vendor'; |
| 101 | $vendor_dirs[] = dirname( __DIR__ ) . '/vendor'; |
| 102 | |
| 103 | // A candidate can exist without containing this package, e.g. a monorepo's root vendor dir. |
| 104 | foreach ( $vendor_dirs as $vendor_dir ) { |
| 105 | $classmap_file = $vendor_dir . '/composer/autoload_classmap.php'; |
| 106 | if ( ! file_exists( $classmap_file ) ) { |
| 107 | continue; |
| 108 | } |
| 109 | $classmap = require $classmap_file; |
| 110 | if ( isset( $classmap[ Waf_Runner::class ] ) ) { |
| 111 | return $classmap_file; |
| 112 | } |
| 113 | } |
| 114 | |
| 115 | throw new Waf_Exception( 'Cannot find the Composer classmap, and the WAF standalone bootstrap will not work without it.' ); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Gets the path to the bootstrap.php file. |
| 120 | * |
| 121 | * @return string The bootstrap.php file path. |
| 122 | */ |
| 123 | public function get_bootstrap_file_path() { |
| 124 | return trailingslashit( JETPACK_WAF_DIR ) . 'bootstrap.php'; |
| 125 | } |
| 126 | |
| 127 | /** |
| 128 | * Gets the entrypoint file. |
| 129 | * |
| 130 | * @return string The entrypoint file. |
| 131 | */ |
| 132 | private function get_entrypoint() { |
| 133 | return defined( 'JETPACK_WAF_ENTRYPOINT' ) ? JETPACK_WAF_ENTRYPOINT : 'rules/rules.php'; |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Generates the bootstrap file. |
| 138 | * |
| 139 | * @throws File_System_Exception If the filesystem is not available. |
| 140 | * @throws File_System_Exception If the WAF directory cannot be created. |
| 141 | * @throws File_System_Exception If the bootstrap file cannot be created. |
| 142 | * |
| 143 | * @return string Absolute path to the bootstrap file. |
| 144 | */ |
| 145 | public function generate() { |
| 146 | |
| 147 | $this->initialize_filesystem(); |
| 148 | |
| 149 | global $wp_filesystem; |
| 150 | if ( ! $wp_filesystem ) { |
| 151 | throw new File_System_Exception( 'Cannot work without the file system being initialized.' ); |
| 152 | } |
| 153 | |
| 154 | $classmap_file = $this->locate_classmap_file(); |
| 155 | |
| 156 | $bootstrap_file = $this->get_bootstrap_file_path(); |
| 157 | $entrypoint = $this->get_entrypoint(); |
| 158 | $mode_option = get_option( Waf_Runner::MODE_OPTION_NAME, false ); |
| 159 | $share_data_option = get_option( Waf_Runner::SHARE_DATA_OPTION_NAME, false ); |
| 160 | $share_debug_data_option = get_option( Waf_Runner::SHARE_DEBUG_DATA_OPTION_NAME, false ); |
| 161 | |
| 162 | // Autoload from the classmap alone rather than `vendor/autoload.php`: Composer's loader would also run every |
| 163 | // package's `files` entries and mark them loaded, so the Jetpack autoloader later skips its own, possibly newer, copies. |
| 164 | // The closure keeps every variable, including the classmap's own `$vendorDir`/`$baseDir`, out of the global scope. |
| 165 | $template = <<<'PHP' |
| 166 | <?php |
| 167 | define( 'DISABLE_JETPACK_WAF', {{disable}} ); |
| 168 | if ( defined( 'DISABLE_JETPACK_WAF' ) && DISABLE_JETPACK_WAF ) return; |
| 169 | define( 'JETPACK_WAF_MODE', {{mode}} ); |
| 170 | define( 'JETPACK_WAF_SHARE_DATA', {{share_data}} ); |
| 171 | define( 'JETPACK_WAF_SHARE_DEBUG_DATA', {{share_debug_data}} ); |
| 172 | define( 'JETPACK_WAF_DIR', {{dir}} ); |
| 173 | define( 'JETPACK_WAF_WPCONFIG', {{wpconfig}} ); |
| 174 | define( 'JETPACK_WAF_ENTRYPOINT', {{entrypoint}} ); |
| 175 | ( static function () { |
| 176 | $classmap_file = {{classmap_file}}; |
| 177 | if ( ! is_file( $classmap_file ) ) { |
| 178 | return; |
| 179 | } |
| 180 | $classmap = require $classmap_file; |
| 181 | $autoloader = static function ( $class_name ) use ( $classmap ) { |
| 182 | if ( isset( $classmap[ $class_name ] ) ) { |
| 183 | require $classmap[ $class_name ]; |
| 184 | } |
| 185 | }; |
| 186 | spl_autoload_register( $autoloader ); |
| 187 | Automattic\Jetpack\Waf\Waf_Runner::initialize(); |
| 188 | spl_autoload_unregister( $autoloader ); |
| 189 | |
| 190 | // The preloaded WAF classes keep running once WordPress starts, and the active plugin's older copy may lack a class |
| 191 | // they reference. Keep resolving WAF classes from here, behind the Jetpack autoloader, which prepends itself. |
| 192 | $waf_classmap = array_filter( |
| 193 | $classmap, |
| 194 | static function ( $class_name ) { |
| 195 | return 0 === strpos( $class_name, 'Automattic\Jetpack\Waf\\' ); |
| 196 | }, |
| 197 | ARRAY_FILTER_USE_KEY |
| 198 | ); |
| 199 | spl_autoload_register( |
| 200 | static function ( $class_name ) use ( $waf_classmap ) { |
| 201 | if ( isset( $waf_classmap[ $class_name ] ) ) { |
| 202 | require $waf_classmap[ $class_name ]; |
| 203 | } |
| 204 | } |
| 205 | ); |
| 206 | } )(); |
| 207 | |
| 208 | PHP; |
| 209 | |
| 210 | $code = strtr( |
| 211 | $template, |
| 212 | array( |
| 213 | '{{disable}}' => var_export( defined( 'DISABLE_JETPACK_WAF' ) && DISABLE_JETPACK_WAF, true ), |
| 214 | '{{mode}}' => var_export( $mode_option ? $mode_option : 'silent', true ), |
| 215 | '{{share_data}}' => var_export( $share_data_option, true ), |
| 216 | '{{share_debug_data}}' => var_export( $share_debug_data_option, true ), |
| 217 | '{{dir}}' => var_export( JETPACK_WAF_DIR, true ), |
| 218 | '{{wpconfig}}' => var_export( JETPACK_WAF_WPCONFIG, true ), |
| 219 | '{{entrypoint}}' => var_export( $entrypoint, true ), |
| 220 | '{{classmap_file}}' => var_export( $classmap_file, true ), |
| 221 | ) |
| 222 | ); |
| 223 | |
| 224 | if ( ! $wp_filesystem->is_dir( JETPACK_WAF_DIR ) ) { |
| 225 | if ( ! $wp_filesystem->mkdir( JETPACK_WAF_DIR ) ) { |
| 226 | throw new File_System_Exception( 'Failed creating WAF standalone bootstrap file directory: ' . JETPACK_WAF_DIR ); |
| 227 | } |
| 228 | } |
| 229 | |
| 230 | if ( ! $wp_filesystem->put_contents( $bootstrap_file, $code ) ) { |
| 231 | throw new File_System_Exception( 'Failed writing WAF standalone bootstrap file to: ' . $bootstrap_file ); |
| 232 | } |
| 233 | |
| 234 | return $bootstrap_file; |
| 235 | } |
| 236 | } |