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1 <?php 2 /** 3 * Filesystem API: Top-level functionality 4 * 5 * Functions for reading, writing, modifying, and deleting files on the file system. 6 * Includes functionality for theme-specific files as well as operations for uploading, 7 * archiving, and rendering output when necessary. 8 * 9 * @package WordPress 10 * @subpackage Filesystem 11 * @since 2.3.0 12 */ 13 14 /** The descriptions for theme files. */ 15 $wp_file_descriptions = array( 16 'functions.php' => __( 'Theme Functions' ), 17 'header.php' => __( 'Theme Header' ), 18 'footer.php' => __( 'Theme Footer' ), 19 'sidebar.php' => __( 'Sidebar' ), 20 'comments.php' => __( 'Comments' ), 21 'searchform.php' => __( 'Search Form' ), 22 '404.php' => __( '404 Template' ), 23 'link.php' => __( 'Links Template' ), 24 // Archives. 25 'index.php' => __( 'Main Index Template' ), 26 'archive.php' => __( 'Archives' ), 27 'author.php' => __( 'Author Template' ), 28 'taxonomy.php' => __( 'Taxonomy Template' ), 29 'category.php' => __( 'Category Template' ), 30 'tag.php' => __( 'Tag Template' ), 31 'home.php' => __( 'Posts Page' ), 32 'search.php' => __( 'Search Results' ), 33 'date.php' => __( 'Date Template' ), 34 // Content. 35 'singular.php' => __( 'Singular Template' ), 36 'single.php' => __( 'Single Post' ), 37 'page.php' => __( 'Single Page' ), 38 'front-page.php' => __( 'Homepage' ), 39 'privacy-policy.php' => __( 'Privacy Policy Page' ), 40 // Attachments. 41 'attachment.php' => __( 'Attachment Template' ), 42 'image.php' => __( 'Image Attachment Template' ), 43 'video.php' => __( 'Video Attachment Template' ), 44 'audio.php' => __( 'Audio Attachment Template' ), 45 'application.php' => __( 'Application Attachment Template' ), 46 // Embeds. 47 'embed.php' => __( 'Embed Template' ), 48 'embed-404.php' => __( 'Embed 404 Template' ), 49 'embed-content.php' => __( 'Embed Content Template' ), 50 'header-embed.php' => __( 'Embed Header Template' ), 51 'footer-embed.php' => __( 'Embed Footer Template' ), 52 // Stylesheets. 53 'style.css' => __( 'Stylesheet' ), 54 'editor-style.css' => __( 'Visual Editor Stylesheet' ), 55 'editor-style-rtl.css' => __( 'Visual Editor RTL Stylesheet' ), 56 'rtl.css' => __( 'RTL Stylesheet' ), 57 // Other. 58 'my-hacks.php' => __( 'my-hacks.php (legacy hacks support)' ), 59 '.htaccess' => __( '.htaccess (for rewrite rules )' ), 60 // Deprecated files. 61 'wp-layout.css' => __( 'Stylesheet' ), 62 'wp-comments.php' => __( 'Comments Template' ), 63 'wp-comments-popup.php' => __( 'Popup Comments Template' ), 64 'comments-popup.php' => __( 'Popup Comments' ), 65 ); 66 67 /** 68 * Gets the description for standard WordPress theme files. 69 * 70 * @since 1.5.0 71 * 72 * @global array $wp_file_descriptions Theme file descriptions. 73 * @global array $allowed_files List of allowed files. 74 * 75 * @param string $file Filesystem path or filename. 76 * @return string Description of file from $wp_file_descriptions or basename of $file if description doesn't exist. 77 * Appends 'Page Template' to basename of $file if the file is a page template. 78 */ 79 function get_file_description( $file ) { 80 global $wp_file_descriptions, $allowed_files; 81 82 $dirname = pathinfo( $file, PATHINFO_DIRNAME ); 83 $file_path = $allowed_files[ $file ]; 84 85 if ( isset( $wp_file_descriptions[ basename( $file ) ] ) && '.' === $dirname ) { 86 return $wp_file_descriptions[ basename( $file ) ]; 87 } elseif ( file_exists( $file_path ) && is_file( $file_path ) ) { 88 $template_data = implode( '', file( $file_path ) ); 89 90 if ( preg_match( '|Template Name:(.*)$|mi', $template_data, $name ) ) { 91 /* translators: %s: Template name. */ 92 return sprintf( __( '%s Page Template' ), _cleanup_header_comment( $name[1] ) ); 93 } 94 } 95 96 return trim( basename( $file ) ); 97 } 98 99 /** 100 * Gets the absolute filesystem path to the root of the WordPress installation. 101 * 102 * @since 1.5.0 103 * 104 * @return string Full filesystem path to the root of the WordPress installation. 105 */ 106 function get_home_path() { 107 $home = set_url_scheme( get_option( 'home' ), 'http' ); 108 $siteurl = set_url_scheme( get_option( 'siteurl' ), 'http' ); 109 110 if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) { 111 $wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); /* $siteurl - $home */ 112 $pos = strripos( str_replace( '\\', '/', $_SERVER['SCRIPT_FILENAME'] ), trailingslashit( $wp_path_rel_to_home ) ); 113 $home_path = substr( $_SERVER['SCRIPT_FILENAME'], 0, $pos ); 114 $home_path = trailingslashit( $home_path ); 115 } else { 116 $home_path = ABSPATH; 117 } 118 119 return str_replace( '\\', '/', $home_path ); 120 } 121 122 /** 123 * Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep. 124 * 125 * The depth of the recursiveness can be controlled by the $levels param. 126 * 127 * @since 2.6.0 128 * @since 4.9.0 Added the `$exclusions` parameter. 129 * 130 * @param string $folder Optional. Full path to folder. Default empty. 131 * @param int $levels Optional. Levels of folders to follow, Default 100 (PHP Loop limit). 132 * @param string[] $exclusions Optional. List of folders and files to skip. 133 * @return string[]|false Array of files on success, false on failure. 134 */ 135 function list_files( $folder = '', $levels = 100, $exclusions = array() ) { 136 if ( empty( $folder ) ) { 137 return false; 138 } 139 140 $folder = trailingslashit( $folder ); 141 142 if ( ! $levels ) { 143 return false; 144 } 145 146 $files = array(); 147 148 $dir = @opendir( $folder ); 149 150 if ( $dir ) { 151 while ( ( $file = readdir( $dir ) ) !== false ) { 152 // Skip current and parent folder links. 153 if ( in_array( $file, array( '.', '..' ), true ) ) { 154 continue; 155 } 156 157 // Skip hidden and excluded files. 158 if ( '.' === $file[0] || in_array( $file, $exclusions, true ) ) { 159 continue; 160 } 161 162 if ( is_dir( $folder . $file ) ) { 163 $files2 = list_files( $folder . $file, $levels - 1 ); 164 if ( $files2 ) { 165 $files = array_merge( $files, $files2 ); 166 } else { 167 $files[] = $folder . $file . '/'; 168 } 169 } else { 170 $files[] = $folder . $file; 171 } 172 } 173 174 closedir( $dir ); 175 } 176 177 return $files; 178 } 179 180 /** 181 * Gets the list of file extensions that are editable in plugins. 182 * 183 * @since 4.9.0 184 * 185 * @param string $plugin Path to the plugin file relative to the plugins directory. 186 * @return string[] Array of editable file extensions. 187 */ 188 function wp_get_plugin_file_editable_extensions( $plugin ) { 189 190 $default_types = array( 191 'bash', 192 'conf', 193 'css', 194 'diff', 195 'htm', 196 'html', 197 'http', 198 'inc', 199 'include', 200 'js', 201 'json', 202 'jsx', 203 'less', 204 'md', 205 'patch', 206 'php', 207 'php3', 208 'php4', 209 'php5', 210 'php7', 211 'phps', 212 'phtml', 213 'sass', 214 'scss', 215 'sh', 216 'sql', 217 'svg', 218 'text', 219 'txt', 220 'xml', 221 'yaml', 222 'yml', 223 ); 224 225 /** 226 * Filters the list of file types allowed for editing in the plugin file editor. 227 * 228 * @since 2.8.0 229 * @since 4.9.0 Added the `$plugin` parameter. 230 * 231 * @param string[] $default_types An array of editable plugin file extensions. 232 * @param string $plugin Path to the plugin file relative to the plugins directory. 233 */ 234 $file_types = (array) apply_filters( 'editable_extensions', $default_types, $plugin ); 235 236 return $file_types; 237 } 238 239 /** 240 * Gets the list of file extensions that are editable for a given theme. 241 * 242 * @since 4.9.0 243 * 244 * @param WP_Theme $theme Theme object. 245 * @return string[] Array of editable file extensions. 246 */ 247 function wp_get_theme_file_editable_extensions( $theme ) { 248 249 $default_types = array( 250 'bash', 251 'conf', 252 'css', 253 'diff', 254 'htm', 255 'html', 256 'http', 257 'inc', 258 'include', 259 'js', 260 'json', 261 'jsx', 262 'less', 263 'md', 264 'patch', 265 'php', 266 'php3', 267 'php4', 268 'php5', 269 'php7', 270 'phps', 271 'phtml', 272 'sass', 273 'scss', 274 'sh', 275 'sql', 276 'svg', 277 'text', 278 'txt', 279 'xml', 280 'yaml', 281 'yml', 282 ); 283 284 /** 285 * Filters the list of file types allowed for editing in the theme file editor. 286 * 287 * @since 4.4.0 288 * 289 * @param string[] $default_types An array of editable theme file extensions. 290 * @param WP_Theme $theme The active theme object. 291 */ 292 $file_types = apply_filters( 'wp_theme_editor_filetypes', $default_types, $theme ); 293 294 // Ensure that default types are still there. 295 return array_unique( array_merge( $file_types, $default_types ) ); 296 } 297 298 /** 299 * Prints file editor templates (for plugins and themes). 300 * 301 * @since 4.9.0 302 */ 303 function wp_print_file_editor_templates() { 304 ?> 305 <script type="text/html" id="tmpl-wp-file-editor-notice"> 306 <div class="notice inline notice-{{ data.type || 'info' }} {{ data.alt ? 'notice-alt' : '' }} {{ data.dismissible ? 'is-dismissible' : '' }} {{ data.classes || '' }}"> 307 <# if ( 'php_error' === data.code ) { #> 308 <p> 309 <?php 310 printf( 311 /* translators: 1: Line number, 2: File path. */ 312 __( 'Your PHP code changes were rolled back due to an error on line %1$s of file %2$s. Please fix and try saving again.' ), 313 '{{ data.line }}', 314 '{{ data.file }}' 315 ); 316 ?> 317 </p> 318 <pre>{{ data.message }}</pre> 319 <# } else if ( 'file_not_writable' === data.code ) { #> 320 <p> 321 <?php 322 printf( 323 /* translators: %s: Documentation URL. */ 324 __( 'You need to make this file writable before you can save your changes. See <a href="%s">Changing File Permissions</a> for more information.' ), 325 __( 'https://wordpress.org/support/article/changing-file-permissions/' ) 326 ); 327 ?> 328 </p> 329 <# } else { #> 330 <p>{{ data.message || data.code }}</p> 331 332 <# if ( 'lint_errors' === data.code ) { #> 333 <p> 334 <# var elementId = 'el-' + String( Math.random() ); #> 335 <input id="{{ elementId }}" type="checkbox"> 336 <label for="{{ elementId }}"><?php _e( 'Update anyway, even though it might break your site?' ); ?></label> 337 </p> 338 <# } #> 339 <# } #> 340 <# if ( data.dismissible ) { #> 341 <button type="button" class="notice-dismiss"><span class="screen-reader-text"><?php _e( 'Dismiss' ); ?></span></button> 342 <# } #> 343 </div> 344 </script> 345 <?php 346 } 347 348 /** 349 * Attempts to edit a file for a theme or plugin. 350 * 351 * When editing a PHP file, loopback requests will be made to the admin and the homepage 352 * to attempt to see if there is a fatal error introduced. If so, the PHP change will be 353 * reverted. 354 * 355 * @since 4.9.0 356 * 357 * @param string[] $args { 358 * Args. Note that all of the arg values are already unslashed. They are, however, 359 * coming straight from `$_POST` and are not validated or sanitized in any way. 360 * 361 * @type string $file Relative path to file. 362 * @type string $plugin Path to the plugin file relative to the plugins directory. 363 * @type string $theme Theme being edited. 364 * @type string $newcontent New content for the file. 365 * @type string $nonce Nonce. 366 * } 367 * @return true|WP_Error True on success or `WP_Error` on failure. 368 */ 369 function wp_edit_theme_plugin_file( $args ) { 370 if ( empty( $args['file'] ) ) { 371 return new WP_Error( 'missing_file' ); 372 } 373 374 if ( 0 !== validate_file( $args['file'] ) ) { 375 return new WP_Error( 'bad_file' ); 376 } 377 378 if ( ! isset( $args['newcontent'] ) ) { 379 return new WP_Error( 'missing_content' ); 380 } 381 382 if ( ! isset( $args['nonce'] ) ) { 383 return new WP_Error( 'missing_nonce' ); 384 } 385 386 $file = $args['file']; 387 $content = $args['newcontent']; 388 389 $plugin = null; 390 $theme = null; 391 $real_file = null; 392 393 if ( ! empty( $args['plugin'] ) ) { 394 $plugin = $args['plugin']; 395 396 if ( ! current_user_can( 'edit_plugins' ) ) { 397 return new WP_Error( 'unauthorized', __( 'Sorry, you are not allowed to edit plugins for this site.' ) ); 398 } 399 400 if ( ! wp_verify_nonce( $args['nonce'], 'edit-plugin_' . $file ) ) { 401 return new WP_Error( 'nonce_failure' ); 402 } 403 404 if ( ! array_key_exists( $plugin, get_plugins() ) ) { 405 return new WP_Error( 'invalid_plugin' ); 406 } 407 408 if ( 0 !== validate_file( $file, get_plugin_files( $plugin ) ) ) { 409 return new WP_Error( 'bad_plugin_file_path', __( 'Sorry, that file cannot be edited.' ) ); 410 } 411 412 $editable_extensions = wp_get_plugin_file_editable_extensions( $plugin ); 413 414 $real_file = WP_PLUGIN_DIR . '/' . $file; 415 416 $is_active = in_array( 417 $plugin, 418 (array) get_option( 'active_plugins', array() ), 419 true 420 ); 421 422 } elseif ( ! empty( $args['theme'] ) ) { 423 $stylesheet = $args['theme']; 424 425 if ( 0 !== validate_file( $stylesheet ) ) { 426 return new WP_Error( 'bad_theme_path' ); 427 } 428 429 if ( ! current_user_can( 'edit_themes' ) ) { 430 return new WP_Error( 'unauthorized', __( 'Sorry, you are not allowed to edit templates for this site.' ) ); 431 } 432 433 $theme = wp_get_theme( $stylesheet ); 434 if ( ! $theme->exists() ) { 435 return new WP_Error( 'non_existent_theme', __( 'The requested theme does not exist.' ) ); 436 } 437 438 if ( ! wp_verify_nonce( $args['nonce'], 'edit-theme_' . $stylesheet . '_' . $file ) ) { 439 return new WP_Error( 'nonce_failure' ); 440 } 441 442 if ( $theme->errors() && 'theme_no_stylesheet' === $theme->errors()->get_error_code() ) { 443 return new WP_Error( 444 'theme_no_stylesheet', 445 __( 'The requested theme does not exist.' ) . ' ' . $theme->errors()->get_error_message() 446 ); 447 } 448 449 $editable_extensions = wp_get_theme_file_editable_extensions( $theme ); 450 451 $allowed_files = array(); 452 foreach ( $editable_extensions as $type ) { 453 switch ( $type ) { 454 case 'php': 455 $allowed_files = array_merge( $allowed_files, $theme->get_files( 'php', -1 ) ); 456 break; 457 case 'css': 458 $style_files = $theme->get_files( 'css', -1 ); 459 $allowed_files['style.css'] = $style_files['style.css']; 460 $allowed_files = array_merge( $allowed_files, $style_files ); 461 break; 462 default: 463 $allowed_files = array_merge( $allowed_files, $theme->get_files( $type, -1 ) ); 464 break; 465 } 466 } 467 468 // Compare based on relative paths. 469 if ( 0 !== validate_file( $file, array_keys( $allowed_files ) ) ) { 470 return new WP_Error( 'disallowed_theme_file', __( 'Sorry, that file cannot be edited.' ) ); 471 } 472 473 $real_file = $theme->get_stylesheet_directory() . '/' . $file; 474 475 $is_active = ( get_stylesheet() === $stylesheet || get_template() === $stylesheet ); 476 477 } else { 478 return new WP_Error( 'missing_theme_or_plugin' ); 479 } 480 481 // Ensure file is real. 482 if ( ! is_file( $real_file ) ) { 483 return new WP_Error( 'file_does_not_exist', __( 'File does not exist! Please double check the name and try again.' ) ); 484 } 485 486 // Ensure file extension is allowed. 487 $extension = null; 488 if ( preg_match( '/\.([^.]+)$/', $real_file, $matches ) ) { 489 $extension = strtolower( $matches[1] ); 490 if ( ! in_array( $extension, $editable_extensions, true ) ) { 491 return new WP_Error( 'illegal_file_type', __( 'Files of this type are not editable.' ) ); 492 } 493 } 494 495 $previous_content = file_get_contents( $real_file ); 496 497 if ( ! is_writable( $real_file ) ) { 498 return new WP_Error( 'file_not_writable' ); 499 } 500 501 $f = fopen( $real_file, 'w+' ); 502 503 if ( false === $f ) { 504 return new WP_Error( 'file_not_writable' ); 505 } 506 507 $written = fwrite( $f, $content ); 508 fclose( $f ); 509 510 if ( false === $written ) { 511 return new WP_Error( 'unable_to_write', __( 'Unable to write to file.' ) ); 512 } 513 514 wp_opcache_invalidate( $real_file, true ); 515 516 if ( $is_active && 'php' === $extension ) { 517 518 $scrape_key = md5( rand() ); 519 $transient = 'scrape_key_' . $scrape_key; 520 $scrape_nonce = (string) rand(); 521 // It shouldn't take more than 60 seconds to make the two loopback requests. 522 set_transient( $transient, $scrape_nonce, 60 ); 523 524 $cookies = wp_unslash( $_COOKIE ); 525 $scrape_params = array( 526 'wp_scrape_key' => $scrape_key, 527 'wp_scrape_nonce' => $scrape_nonce, 528 ); 529 $headers = array( 530 'Cache-Control' => 'no-cache', 531 ); 532 533 /** This filter is documented in wp-includes/class-wp-http-streams.php */ 534 $sslverify = apply_filters( 'https_local_ssl_verify', false ); 535 536 // Include Basic auth in loopback requests. 537 if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) { 538 $headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) ); 539 } 540 541 // Make sure PHP process doesn't die before loopback requests complete. 542 set_time_limit( 300 ); 543 544 // Time to wait for loopback requests to finish. 545 $timeout = 100; 546 547 $needle_start = "###### wp_scraping_result_start:$scrape_key ######"; 548 $needle_end = "###### wp_scraping_result_end:$scrape_key ######"; 549 550 // Attempt loopback request to editor to see if user just whitescreened themselves. 551 if ( $plugin ) { 552 $url = add_query_arg( compact( 'plugin', 'file' ), admin_url( 'plugin-editor.php' ) ); 553 } elseif ( isset( $stylesheet ) ) { 554 $url = add_query_arg( 555 array( 556 'theme' => $stylesheet, 557 'file' => $file, 558 ), 559 admin_url( 'theme-editor.php' ) 560 ); 561 } else { 562 $url = admin_url(); 563 } 564 565 if ( function_exists( 'session_status' ) && PHP_SESSION_ACTIVE === session_status() ) { 566 // Close any active session to prevent HTTP requests from timing out 567 // when attempting to connect back to the site. 568 session_write_close(); 569 } 570 571 $url = add_query_arg( $scrape_params, $url ); 572 $r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout', 'sslverify' ) ); 573 $body = wp_remote_retrieve_body( $r ); 574 $scrape_result_position = strpos( $body, $needle_start ); 575 576 $loopback_request_failure = array( 577 'code' => 'loopback_request_failed', 578 'message' => __( 'Unable to communicate back with site to check for fatal errors, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP.' ), 579 ); 580 $json_parse_failure = array( 581 'code' => 'json_parse_error', 582 ); 583 584 $result = null; 585 586 if ( false === $scrape_result_position ) { 587 $result = $loopback_request_failure; 588 } else { 589 $error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) ); 590 $error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) ); 591 $result = json_decode( trim( $error_output ), true ); 592 if ( empty( $result ) ) { 593 $result = $json_parse_failure; 594 } 595 } 596 597 // Try making request to homepage as well to see if visitors have been whitescreened. 598 if ( true === $result ) { 599 $url = home_url( '/' ); 600 $url = add_query_arg( $scrape_params, $url ); 601 $r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout', 'sslverify' ) ); 602 $body = wp_remote_retrieve_body( $r ); 603 $scrape_result_position = strpos( $body, $needle_start ); 604 605 if ( false === $scrape_result_position ) { 606 $result = $loopback_request_failure; 607 } else { 608 $error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) ); 609 $error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) ); 610 $result = json_decode( trim( $error_output ), true ); 611 if ( empty( $result ) ) { 612 $result = $json_parse_failure; 613 } 614 } 615 } 616 617 delete_transient( $transient ); 618 619 if ( true !== $result ) { 620 // Roll-back file change. 621 file_put_contents( $real_file, $previous_content ); 622 wp_opcache_invalidate( $real_file, true ); 623 624 if ( ! isset( $result['message'] ) ) { 625 $message = __( 'Something went wrong.' ); 626 } else { 627 $message = $result['message']; 628 unset( $result['message'] ); 629 } 630 631 return new WP_Error( 'php_error', $message, $result ); 632 } 633 } 634 635 if ( $theme instanceof WP_Theme ) { 636 $theme->cache_delete(); 637 } 638 639 return true; 640 } 641 642 643 /** 644 * Returns a filename of a temporary unique file. 645 * 646 * Please note that the calling function must unlink() this itself. 647 * 648 * The filename is based off the passed parameter or defaults to the current unix timestamp, 649 * while the directory can either be passed as well, or by leaving it blank, default to a writable 650 * temporary directory. 651 * 652 * @since 2.6.0 653 * 654 * @param string $filename Optional. Filename to base the Unique file off. Default empty. 655 * @param string $dir Optional. Directory to store the file in. Default empty. 656 * @return string A writable filename. 657 */ 658 function wp_tempnam( $filename = '', $dir = '' ) { 659 if ( empty( $dir ) ) { 660 $dir = get_temp_dir(); 661 } 662 663 if ( empty( $filename ) || in_array( $filename, array( '.', '/', '\\' ), true ) ) { 664 $filename = uniqid(); 665 } 666 667 // Use the basename of the given file without the extension as the name for the temporary directory. 668 $temp_filename = basename( $filename ); 669 $temp_filename = preg_replace( '|\.[^.]*$|', '', $temp_filename ); 670 671 // If the folder is falsey, use its parent directory name instead. 672 if ( ! $temp_filename ) { 673 return wp_tempnam( dirname( $filename ), $dir ); 674 } 675 676 // Suffix some random data to avoid filename conflicts. 677 $temp_filename .= '-' . wp_generate_password( 6, false ); 678 $temp_filename .= '.tmp'; 679 $temp_filename = $dir . wp_unique_filename( $dir, $temp_filename ); 680 681 $fp = @fopen( $temp_filename, 'x' ); 682 683 if ( ! $fp && is_writable( $dir ) && file_exists( $temp_filename ) ) { 684 return wp_tempnam( $filename, $dir ); 685 } 686 687 if ( $fp ) { 688 fclose( $fp ); 689 } 690 691 return $temp_filename; 692 } 693 694 /** 695 * Makes sure that the file that was requested to be edited is allowed to be edited. 696 * 697 * Function will die if you are not allowed to edit the file. 698 * 699 * @since 1.5.0 700 * 701 * @param string $file File the user is attempting to edit. 702 * @param string[] $allowed_files Optional. Array of allowed files to edit. 703 * `$file` must match an entry exactly. 704 * @return string|void Returns the file name on success, dies on failure. 705 */ 706 function validate_file_to_edit( $file, $allowed_files = array() ) { 707 $code = validate_file( $file, $allowed_files ); 708 709 if ( ! $code ) { 710 return $file; 711 } 712 713 switch ( $code ) { 714 case 1: 715 wp_die( __( 'Sorry, that file cannot be edited.' ) ); 716 717 // case 2 : 718 // wp_die( __('Sorry, cannot call files with their real path.' )); 719 720 case 3: 721 wp_die( __( 'Sorry, that file cannot be edited.' ) ); 722 } 723 } 724 725 /** 726 * Handles PHP uploads in WordPress. 727 * 728 * Sanitizes file names, checks extensions for mime type, and moves the file 729 * to the appropriate directory within the uploads directory. 730 * 731 * @access private 732 * @since 4.0.0 733 * 734 * @see wp_handle_upload_error 735 * 736 * @param array $file { 737 * Reference to a single element from `$_FILES`. Call the function once for each uploaded file. 738 * 739 * @type string $name The original name of the file on the client machine. 740 * @type string $type The mime type of the file, if the browser provided this information. 741 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 742 * @type int $size The size, in bytes, of the uploaded file. 743 * @type int $error The error code associated with this file upload. 744 * } 745 * @param array|false $overrides { 746 * An array of override parameters for this file, or boolean false if none are provided. 747 * 748 * @type callable $upload_error_handler Function to call when there is an error during the upload process. 749 * @see wp_handle_upload_error(). 750 * @type callable $unique_filename_callback Function to call when determining a unique file name for the file. 751 * @see wp_unique_filename(). 752 * @type string[] $upload_error_strings The strings that describe the error indicated in 753 * `$_FILES[{form field}]['error']`. 754 * @type bool $test_form Whether to test that the `$_POST['action']` parameter is as expected. 755 * @type bool $test_size Whether to test that the file size is greater than zero bytes. 756 * @type bool $test_type Whether to test that the mime type of the file is as expected. 757 * @type string[] $mimes Array of allowed mime types keyed by their file extension regex. 758 * } 759 * @param string $time Time formatted in 'yyyy/mm'. 760 * @param string $action Expected value for `$_POST['action']`. 761 * @return array { 762 * On success, returns an associative array of file attributes. 763 * On failure, returns `$overrides['upload_error_handler']( &$file, $message )` 764 * or `array( 'error' => $message )`. 765 * 766 * @type string $file Filename of the newly-uploaded file. 767 * @type string $url URL of the newly-uploaded file. 768 * @type string $type Mime type of the newly-uploaded file. 769 * } 770 */ 771 function _wp_handle_upload( &$file, $overrides, $time, $action ) { 772 // The default error handler. 773 if ( ! function_exists( 'wp_handle_upload_error' ) ) { 774 function wp_handle_upload_error( &$file, $message ) { 775 return array( 'error' => $message ); 776 } 777 } 778 779 /** 780 * Filters the data for a file before it is uploaded to WordPress. 781 * 782 * The dynamic portion of the hook name, `$action`, refers to the post action. 783 * 784 * Possible hook names include: 785 * 786 * - `wp_handle_sideload_prefilter` 787 * - `wp_handle_upload_prefilter` 788 * 789 * @since 2.9.0 as 'wp_handle_upload_prefilter'. 790 * @since 4.0.0 Converted to a dynamic hook with `$action`. 791 * 792 * @param array $file { 793 * Reference to a single element from `$_FILES`. 794 * 795 * @type string $name The original name of the file on the client machine. 796 * @type string $type The mime type of the file, if the browser provided this information. 797 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 798 * @type int $size The size, in bytes, of the uploaded file. 799 * @type int $error The error code associated with this file upload. 800 * } 801 */ 802 $file = apply_filters( "{$action}_prefilter", $file ); 803 804 /** 805 * Filters the override parameters for a file before it is uploaded to WordPress. 806 * 807 * The dynamic portion of the hook name, `$action`, refers to the post action. 808 * 809 * Possible hook names include: 810 * 811 * - `wp_handle_sideload_overrides` 812 * - `wp_handle_upload_overrides` 813 * 814 * @since 5.7.0 815 * 816 * @param array|false $overrides An array of override parameters for this file. Boolean false if none are 817 * provided. @see _wp_handle_upload(). 818 * @param array $file { 819 * Reference to a single element from `$_FILES`. 820 * 821 * @type string $name The original name of the file on the client machine. 822 * @type string $type The mime type of the file, if the browser provided this information. 823 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 824 * @type int $size The size, in bytes, of the uploaded file. 825 * @type int $error The error code associated with this file upload. 826 * } 827 */ 828 $overrides = apply_filters( "{$action}_overrides", $overrides, $file ); 829 830 // You may define your own function and pass the name in $overrides['upload_error_handler']. 831 $upload_error_handler = 'wp_handle_upload_error'; 832 if ( isset( $overrides['upload_error_handler'] ) ) { 833 $upload_error_handler = $overrides['upload_error_handler']; 834 } 835 836 // You may have had one or more 'wp_handle_upload_prefilter' functions error out the file. Handle that gracefully. 837 if ( isset( $file['error'] ) && ! is_numeric( $file['error'] ) && $file['error'] ) { 838 return call_user_func_array( $upload_error_handler, array( &$file, $file['error'] ) ); 839 } 840 841 // Install user overrides. Did we mention that this voids your warranty? 842 843 // You may define your own function and pass the name in $overrides['unique_filename_callback']. 844 $unique_filename_callback = null; 845 if ( isset( $overrides['unique_filename_callback'] ) ) { 846 $unique_filename_callback = $overrides['unique_filename_callback']; 847 } 848 849 /* 850 * This may not have originally been intended to be overridable, 851 * but historically has been. 852 */ 853 if ( isset( $overrides['upload_error_strings'] ) ) { 854 $upload_error_strings = $overrides['upload_error_strings']; 855 } else { 856 // Courtesy of php.net, the strings that describe the error indicated in $_FILES[{form field}]['error']. 857 $upload_error_strings = array( 858 false, 859 sprintf( 860 /* translators: 1: upload_max_filesize, 2: php.ini */ 861 __( 'The uploaded file exceeds the %1$s directive in %2$s.' ), 862 'upload_max_filesize', 863 'php.ini' 864 ), 865 sprintf( 866 /* translators: %s: MAX_FILE_SIZE */ 867 __( 'The uploaded file exceeds the %s directive that was specified in the HTML form.' ), 868 'MAX_FILE_SIZE' 869 ), 870 __( 'The uploaded file was only partially uploaded.' ), 871 __( 'No file was uploaded.' ), 872 '', 873 __( 'Missing a temporary folder.' ), 874 __( 'Failed to write file to disk.' ), 875 __( 'File upload stopped by extension.' ), 876 ); 877 } 878 879 // All tests are on by default. Most can be turned off by $overrides[{test_name}] = false; 880 $test_form = isset( $overrides['test_form'] ) ? $overrides['test_form'] : true; 881 $test_size = isset( $overrides['test_size'] ) ? $overrides['test_size'] : true; 882 883 // If you override this, you must provide $ext and $type!! 884 $test_type = isset( $overrides['test_type'] ) ? $overrides['test_type'] : true; 885 $mimes = isset( $overrides['mimes'] ) ? $overrides['mimes'] : false; 886 887 // A correct form post will pass this test. 888 if ( $test_form && ( ! isset( $_POST['action'] ) || $_POST['action'] !== $action ) ) { 889 return call_user_func_array( $upload_error_handler, array( &$file, __( 'Invalid form submission.' ) ) ); 890 } 891 892 // A successful upload will pass this test. It makes no sense to override this one. 893 if ( isset( $file['error'] ) && $file['error'] > 0 ) { 894 return call_user_func_array( $upload_error_handler, array( &$file, $upload_error_strings[ $file['error'] ] ) ); 895 } 896 897 // A properly uploaded file will pass this test. There should be no reason to override this one. 898 $test_uploaded_file = 'wp_handle_upload' === $action ? is_uploaded_file( $file['tmp_name'] ) : @is_readable( $file['tmp_name'] ); 899 if ( ! $test_uploaded_file ) { 900 return call_user_func_array( $upload_error_handler, array( &$file, __( 'Specified file failed upload test.' ) ) ); 901 } 902 903 $test_file_size = 'wp_handle_upload' === $action ? $file['size'] : filesize( $file['tmp_name'] ); 904 // A non-empty file will pass this test. 905 if ( $test_size && ! ( $test_file_size > 0 ) ) { 906 if ( is_multisite() ) { 907 $error_msg = __( 'File is empty. Please upload something more substantial.' ); 908 } else { 909 $error_msg = sprintf( 910 /* translators: 1: php.ini, 2: post_max_size, 3: upload_max_filesize */ 911 __( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your %1$s file or by %2$s being defined as smaller than %3$s in %1$s.' ), 912 'php.ini', 913 'post_max_size', 914 'upload_max_filesize' 915 ); 916 } 917 918 return call_user_func_array( $upload_error_handler, array( &$file, $error_msg ) ); 919 } 920 921 // A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter. 922 if ( $test_type ) { 923 $wp_filetype = wp_check_filetype_and_ext( $file['tmp_name'], $file['name'], $mimes ); 924 $ext = empty( $wp_filetype['ext'] ) ? '' : $wp_filetype['ext']; 925 $type = empty( $wp_filetype['type'] ) ? '' : $wp_filetype['type']; 926 $proper_filename = empty( $wp_filetype['proper_filename'] ) ? '' : $wp_filetype['proper_filename']; 927 928 // Check to see if wp_check_filetype_and_ext() determined the filename was incorrect. 929 if ( $proper_filename ) { 930 $file['name'] = $proper_filename; 931 } 932 933 if ( ( ! $type || ! $ext ) && ! current_user_can( 'unfiltered_upload' ) ) { 934 return call_user_func_array( $upload_error_handler, array( &$file, __( 'Sorry, you are not allowed to upload this file type.' ) ) ); 935 } 936 937 if ( ! $type ) { 938 $type = $file['type']; 939 } 940 } else { 941 $type = ''; 942 } 943 944 /* 945 * A writable uploads dir will pass this test. Again, there's no point 946 * overriding this one. 947 */ 948 $uploads = wp_upload_dir( $time ); 949 if ( ! ( $uploads && false === $uploads['error'] ) ) { 950 return call_user_func_array( $upload_error_handler, array( &$file, $uploads['error'] ) ); 951 } 952 953 $filename = wp_unique_filename( $uploads['path'], $file['name'], $unique_filename_callback ); 954 955 // Move the file to the uploads dir. 956 $new_file = $uploads['path'] . "/$filename"; 957 958 /** 959 * Filters whether to short-circuit moving the uploaded file after passing all checks. 960 * 961 * If a non-null value is returned from the filter, moving the file and any related 962 * error reporting will be completely skipped. 963 * 964 * @since 4.9.0 965 * 966 * @param mixed $move_new_file If null (default) move the file after the upload. 967 * @param array $file { 968 * Reference to a single element from `$_FILES`. 969 * 970 * @type string $name The original name of the file on the client machine. 971 * @type string $type The mime type of the file, if the browser provided this information. 972 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 973 * @type int $size The size, in bytes, of the uploaded file. 974 * @type int $error The error code associated with this file upload. 975 * } 976 * @param string $new_file Filename of the newly-uploaded file. 977 * @param string $type Mime type of the newly-uploaded file. 978 */ 979 $move_new_file = apply_filters( 'pre_move_uploaded_file', null, $file, $new_file, $type ); 980 981 if ( null === $move_new_file ) { 982 if ( 'wp_handle_upload' === $action ) { 983 $move_new_file = @move_uploaded_file( $file['tmp_name'], $new_file ); 984 } else { 985 // Use copy and unlink because rename breaks streams. 986 // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged 987 $move_new_file = @copy( $file['tmp_name'], $new_file ); 988 unlink( $file['tmp_name'] ); 989 } 990 991 if ( false === $move_new_file ) { 992 if ( 0 === strpos( $uploads['basedir'], ABSPATH ) ) { 993 $error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir']; 994 } else { 995 $error_path = basename( $uploads['basedir'] ) . $uploads['subdir']; 996 } 997 998 return $upload_error_handler( 999 $file, 1000 sprintf( 1001 /* translators: %s: Destination file path. */ 1002 __( 'The uploaded file could not be moved to %s.' ), 1003 $error_path 1004 ) 1005 ); 1006 } 1007 } 1008 1009 // Set correct file permissions. 1010 $stat = stat( dirname( $new_file ) ); 1011 $perms = $stat['mode'] & 0000666; 1012 chmod( $new_file, $perms ); 1013 1014 // Compute the URL. 1015 $url = $uploads['url'] . "/$filename"; 1016 1017 if ( is_multisite() ) { 1018 clean_dirsize_cache( $new_file ); 1019 } 1020 1021 /** 1022 * Filters the data array for the uploaded file. 1023 * 1024 * @since 2.1.0 1025 * 1026 * @param array $upload { 1027 * Array of upload data. 1028 * 1029 * @type string $file Filename of the newly-uploaded file. 1030 * @type string $url URL of the newly-uploaded file. 1031 * @type string $type Mime type of the newly-uploaded file. 1032 * } 1033 * @param string $context The type of upload action. Values include 'upload' or 'sideload'. 1034 */ 1035 return apply_filters( 1036 'wp_handle_upload', 1037 array( 1038 'file' => $new_file, 1039 'url' => $url, 1040 'type' => $type, 1041 ), 1042 'wp_handle_sideload' === $action ? 'sideload' : 'upload' 1043 ); 1044 } 1045 1046 /** 1047 * Wrapper for _wp_handle_upload(). 1048 * 1049 * Passes the {@see 'wp_handle_upload'} action. 1050 * 1051 * @since 2.0.0 1052 * 1053 * @see _wp_handle_upload() 1054 * 1055 * @param array $file Reference to a single element of `$_FILES`. 1056 * Call the function once for each uploaded file. 1057 * See _wp_handle_upload() for accepted values. 1058 * @param array|false $overrides Optional. An associative array of names => values 1059 * to override default variables. Default false. 1060 * See _wp_handle_upload() for accepted values. 1061 * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null. 1062 * @return array See _wp_handle_upload() for return value. 1063 */ 1064 function wp_handle_upload( &$file, $overrides = false, $time = null ) { 1065 /* 1066 * $_POST['action'] must be set and its value must equal $overrides['action'] 1067 * or this: 1068 */ 1069 $action = 'wp_handle_upload'; 1070 if ( isset( $overrides['action'] ) ) { 1071 $action = $overrides['action']; 1072 } 1073 1074 return _wp_handle_upload( $file, $overrides, $time, $action ); 1075 } 1076 1077 /** 1078 * Wrapper for _wp_handle_upload(). 1079 * 1080 * Passes the {@see 'wp_handle_sideload'} action. 1081 * 1082 * @since 2.6.0 1083 * 1084 * @see _wp_handle_upload() 1085 * 1086 * @param array $file Reference to a single element of `$_FILES`. 1087 * Call the function once for each uploaded file. 1088 * See _wp_handle_upload() for accepted values. 1089 * @param array|false $overrides Optional. An associative array of names => values 1090 * to override default variables. Default false. 1091 * See _wp_handle_upload() for accepted values. 1092 * @param string $time Optional. Time formatted in 'yyyy/mm'. Default null. 1093 * @return array See _wp_handle_upload() for return value. 1094 */ 1095 function wp_handle_sideload( &$file, $overrides = false, $time = null ) { 1096 /* 1097 * $_POST['action'] must be set and its value must equal $overrides['action'] 1098 * or this: 1099 */ 1100 $action = 'wp_handle_sideload'; 1101 if ( isset( $overrides['action'] ) ) { 1102 $action = $overrides['action']; 1103 } 1104 1105 return _wp_handle_upload( $file, $overrides, $time, $action ); 1106 } 1107 1108 /** 1109 * Downloads a URL to a local temporary file using the WordPress HTTP API. 1110 * 1111 * Please note that the calling function must unlink() the file. 1112 * 1113 * @since 2.5.0 1114 * @since 5.2.0 Signature Verification with SoftFail was added. 1115 * @since 5.9.0 Support for Content-Disposition filename was added. 1116 * 1117 * @param string $url The URL of the file to download. 1118 * @param int $timeout The timeout for the request to download the file. 1119 * Default 300 seconds. 1120 * @param bool $signature_verification Whether to perform Signature Verification. 1121 * Default false. 1122 * @return string|WP_Error Filename on success, WP_Error on failure. 1123 */ 1124 function download_url( $url, $timeout = 300, $signature_verification = false ) { 1125 // WARNING: The file is not automatically deleted, the script must unlink() the file. 1126 if ( ! $url ) { 1127 return new WP_Error( 'http_no_url', __( 'Invalid URL Provided.' ) ); 1128 } 1129 1130 $url_path = parse_url( $url, PHP_URL_PATH ); 1131 $url_filename = ''; 1132 if ( is_string( $url_path ) && '' !== $url_path ) { 1133 $url_filename = basename( $url_path ); 1134 } 1135 1136 $tmpfname = wp_tempnam( $url_filename ); 1137 if ( ! $tmpfname ) { 1138 return new WP_Error( 'http_no_file', __( 'Could not create temporary file.' ) ); 1139 } 1140 1141 $response = wp_safe_remote_get( 1142 $url, 1143 array( 1144 'timeout' => $timeout, 1145 'stream' => true, 1146 'filename' => $tmpfname, 1147 ) 1148 ); 1149 1150 if ( is_wp_error( $response ) ) { 1151 unlink( $tmpfname ); 1152 return $response; 1153 } 1154 1155 $response_code = wp_remote_retrieve_response_code( $response ); 1156 1157 if ( 200 !== $response_code ) { 1158 $data = array( 1159 'code' => $response_code, 1160 ); 1161 1162 // Retrieve a sample of the response body for debugging purposes. 1163 $tmpf = fopen( $tmpfname, 'rb' ); 1164 1165 if ( $tmpf ) { 1166 /** 1167 * Filters the maximum error response body size in `download_url()`. 1168 * 1169 * @since 5.1.0 1170 * 1171 * @see download_url() 1172 * 1173 * @param int $size The maximum error response body size. Default 1 KB. 1174 */ 1175 $response_size = apply_filters( 'download_url_error_max_body_size', KB_IN_BYTES ); 1176 1177 $data['body'] = fread( $tmpf, $response_size ); 1178 fclose( $tmpf ); 1179 } 1180 1181 unlink( $tmpfname ); 1182 1183 return new WP_Error( 'http_404', trim( wp_remote_retrieve_response_message( $response ) ), $data ); 1184 } 1185 1186 $content_disposition = wp_remote_retrieve_header( $response, 'content-disposition' ); 1187 1188 if ( $content_disposition ) { 1189 $content_disposition = strtolower( $content_disposition ); 1190 1191 if ( 0 === strpos( $content_disposition, 'attachment; filename=' ) ) { 1192 $tmpfname_disposition = sanitize_file_name( substr( $content_disposition, 21 ) ); 1193 } else { 1194 $tmpfname_disposition = ''; 1195 } 1196 1197 // Potential file name must be valid string. 1198 if ( $tmpfname_disposition && is_string( $tmpfname_disposition ) 1199 && ( 0 === validate_file( $tmpfname_disposition ) ) 1200 ) { 1201 $tmpfname_disposition = dirname( $tmpfname ) . '/' . $tmpfname_disposition; 1202 1203 if ( rename( $tmpfname, $tmpfname_disposition ) ) { 1204 $tmpfname = $tmpfname_disposition; 1205 } 1206 1207 if ( ( $tmpfname !== $tmpfname_disposition ) && file_exists( $tmpfname_disposition ) ) { 1208 unlink( $tmpfname_disposition ); 1209 } 1210 } 1211 } 1212 1213 $content_md5 = wp_remote_retrieve_header( $response, 'content-md5' ); 1214 1215 if ( $content_md5 ) { 1216 $md5_check = verify_file_md5( $tmpfname, $content_md5 ); 1217 1218 if ( is_wp_error( $md5_check ) ) { 1219 unlink( $tmpfname ); 1220 return $md5_check; 1221 } 1222 } 1223 1224 // If the caller expects signature verification to occur, check to see if this URL supports it. 1225 if ( $signature_verification ) { 1226 /** 1227 * Filters the list of hosts which should have Signature Verification attempted on. 1228 * 1229 * @since 5.2.0 1230 * 1231 * @param string[] $hostnames List of hostnames. 1232 */ 1233 $signed_hostnames = apply_filters( 'wp_signature_hosts', array( 'wordpress.org', 'downloads.wordpress.org', 's.w.org' ) ); 1234 1235 $signature_verification = in_array( parse_url( $url, PHP_URL_HOST ), $signed_hostnames, true ); 1236 } 1237 1238 // Perform signature valiation if supported. 1239 if ( $signature_verification ) { 1240 $signature = wp_remote_retrieve_header( $response, 'x-content-signature' ); 1241 1242 if ( ! $signature ) { 1243 // Retrieve signatures from a file if the header wasn't included. 1244 // WordPress.org stores signatures at $package_url.sig. 1245 1246 $signature_url = false; 1247 1248 if ( is_string( $url_path ) && ( '.zip' === substr( $url_path, -4 ) || '.tar.gz' === substr( $url_path, -7 ) ) ) { 1249 $signature_url = str_replace( $url_path, $url_path . '.sig', $url ); 1250 } 1251 1252 /** 1253 * Filters the URL where the signature for a file is located. 1254 * 1255 * @since 5.2.0 1256 * 1257 * @param false|string $signature_url The URL where signatures can be found for a file, or false if none are known. 1258 * @param string $url The URL being verified. 1259 */ 1260 $signature_url = apply_filters( 'wp_signature_url', $signature_url, $url ); 1261 1262 if ( $signature_url ) { 1263 $signature_request = wp_safe_remote_get( 1264 $signature_url, 1265 array( 1266 'limit_response_size' => 10 * KB_IN_BYTES, // 10KB should be large enough for quite a few signatures. 1267 ) 1268 ); 1269 1270 if ( ! is_wp_error( $signature_request ) && 200 === wp_remote_retrieve_response_code( $signature_request ) ) { 1271 $signature = explode( "\n", wp_remote_retrieve_body( $signature_request ) ); 1272 } 1273 } 1274 } 1275 1276 // Perform the checks. 1277 $signature_verification = verify_file_signature( $tmpfname, $signature, $url_filename ); 1278 } 1279 1280 if ( is_wp_error( $signature_verification ) ) { 1281 if ( 1282 /** 1283 * Filters whether Signature Verification failures should be allowed to soft fail. 1284 * 1285 * WARNING: This may be removed from a future release. 1286 * 1287 * @since 5.2.0 1288 * 1289 * @param bool $signature_softfail If a softfail is allowed. 1290 * @param string $url The url being accessed. 1291 */ 1292 apply_filters( 'wp_signature_softfail', true, $url ) 1293 ) { 1294 $signature_verification->add_data( $tmpfname, 'softfail-filename' ); 1295 } else { 1296 // Hard-fail. 1297 unlink( $tmpfname ); 1298 } 1299 1300 return $signature_verification; 1301 } 1302 1303 return $tmpfname; 1304 } 1305 1306 /** 1307 * Calculates and compares the MD5 of a file to its expected value. 1308 * 1309 * @since 3.7.0 1310 * 1311 * @param string $filename The filename to check the MD5 of. 1312 * @param string $expected_md5 The expected MD5 of the file, either a base64-encoded raw md5, 1313 * or a hex-encoded md5. 1314 * @return bool|WP_Error True on success, false when the MD5 format is unknown/unexpected, 1315 * WP_Error on failure. 1316 */ 1317 function verify_file_md5( $filename, $expected_md5 ) { 1318 if ( 32 === strlen( $expected_md5 ) ) { 1319 $expected_raw_md5 = pack( 'H*', $expected_md5 ); 1320 } elseif ( 24 === strlen( $expected_md5 ) ) { 1321 $expected_raw_md5 = base64_decode( $expected_md5 ); 1322 } else { 1323 return false; // Unknown format. 1324 } 1325 1326 $file_md5 = md5_file( $filename, true ); 1327 1328 if ( $file_md5 === $expected_raw_md5 ) { 1329 return true; 1330 } 1331 1332 return new WP_Error( 1333 'md5_mismatch', 1334 sprintf( 1335 /* translators: 1: File checksum, 2: Expected checksum value. */ 1336 __( 'The checksum of the file (%1$s) does not match the expected checksum value (%2$s).' ), 1337 bin2hex( $file_md5 ), 1338 bin2hex( $expected_raw_md5 ) 1339 ) 1340 ); 1341 } 1342 1343 /** 1344 * Verifies the contents of a file against its ED25519 signature. 1345 * 1346 * @since 5.2.0 1347 * 1348 * @param string $filename The file to validate. 1349 * @param string|array $signatures A Signature provided for the file. 1350 * @param string|false $filename_for_errors Optional. A friendly filename for errors. 1351 * @return bool|WP_Error True on success, false if verification not attempted, 1352 * or WP_Error describing an error condition. 1353 */ 1354 function verify_file_signature( $filename, $signatures, $filename_for_errors = false ) { 1355 if ( ! $filename_for_errors ) { 1356 $filename_for_errors = wp_basename( $filename ); 1357 } 1358 1359 // Check we can process signatures. 1360 if ( ! function_exists( 'sodium_crypto_sign_verify_detached' ) || ! in_array( 'sha384', array_map( 'strtolower', hash_algos() ), true ) ) { 1361 return new WP_Error( 1362 'signature_verification_unsupported', 1363 sprintf( 1364 /* translators: %s: The filename of the package. */ 1365 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1366 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1367 ), 1368 ( ! function_exists( 'sodium_crypto_sign_verify_detached' ) ? 'sodium_crypto_sign_verify_detached' : 'sha384' ) 1369 ); 1370 } 1371 1372 // Check for a edge-case affecting PHP Maths abilities. 1373 if ( 1374 ! extension_loaded( 'sodium' ) && 1375 in_array( PHP_VERSION_ID, array( 70200, 70201, 70202 ), true ) && 1376 extension_loaded( 'opcache' ) 1377 ) { 1378 // Sodium_Compat isn't compatible with PHP 7.2.0~7.2.2 due to a bug in the PHP Opcache extension, bail early as it'll fail. 1379 // https://bugs.php.net/bug.php?id=75938 1380 return new WP_Error( 1381 'signature_verification_unsupported', 1382 sprintf( 1383 /* translators: %s: The filename of the package. */ 1384 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1385 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1386 ), 1387 array( 1388 'php' => phpversion(), 1389 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1390 ) 1391 ); 1392 } 1393 1394 // Verify runtime speed of Sodium_Compat is acceptable. 1395 if ( ! extension_loaded( 'sodium' ) && ! ParagonIE_Sodium_Compat::polyfill_is_fast() ) { 1396 $sodium_compat_is_fast = false; 1397 1398 // Allow for an old version of Sodium_Compat being loaded before the bundled WordPress one. 1399 if ( method_exists( 'ParagonIE_Sodium_Compat', 'runtime_speed_test' ) ) { 1400 /* 1401 * Run `ParagonIE_Sodium_Compat::runtime_speed_test()` in optimized integer mode, 1402 * as that's what WordPress utilizes during signing verifications. 1403 */ 1404 // phpcs:disable WordPress.NamingConventions.ValidVariableName 1405 $old_fastMult = ParagonIE_Sodium_Compat::$fastMult; 1406 ParagonIE_Sodium_Compat::$fastMult = true; 1407 $sodium_compat_is_fast = ParagonIE_Sodium_Compat::runtime_speed_test( 100, 10 ); 1408 ParagonIE_Sodium_Compat::$fastMult = $old_fastMult; 1409 // phpcs:enable 1410 } 1411 1412 // This cannot be performed in a reasonable amount of time. 1413 // https://github.com/paragonie/sodium_compat#help-sodium_compat-is-slow-how-can-i-make-it-fast 1414 if ( ! $sodium_compat_is_fast ) { 1415 return new WP_Error( 1416 'signature_verification_unsupported', 1417 sprintf( 1418 /* translators: %s: The filename of the package. */ 1419 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1420 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1421 ), 1422 array( 1423 'php' => phpversion(), 1424 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1425 'polyfill_is_fast' => false, 1426 'max_execution_time' => ini_get( 'max_execution_time' ), 1427 ) 1428 ); 1429 } 1430 } 1431 1432 if ( ! $signatures ) { 1433 return new WP_Error( 1434 'signature_verification_no_signature', 1435 sprintf( 1436 /* translators: %s: The filename of the package. */ 1437 __( 'The authenticity of %s could not be verified as no signature was found.' ), 1438 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1439 ), 1440 array( 1441 'filename' => $filename_for_errors, 1442 ) 1443 ); 1444 } 1445 1446 $trusted_keys = wp_trusted_keys(); 1447 $file_hash = hash_file( 'sha384', $filename, true ); 1448 1449 mbstring_binary_safe_encoding(); 1450 1451 $skipped_key = 0; 1452 $skipped_signature = 0; 1453 1454 foreach ( (array) $signatures as $signature ) { 1455 $signature_raw = base64_decode( $signature ); 1456 1457 // Ensure only valid-length signatures are considered. 1458 if ( SODIUM_CRYPTO_SIGN_BYTES !== strlen( $signature_raw ) ) { 1459 $skipped_signature++; 1460 continue; 1461 } 1462 1463 foreach ( (array) $trusted_keys as $key ) { 1464 $key_raw = base64_decode( $key ); 1465 1466 // Only pass valid public keys through. 1467 if ( SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES !== strlen( $key_raw ) ) { 1468 $skipped_key++; 1469 continue; 1470 } 1471 1472 if ( sodium_crypto_sign_verify_detached( $signature_raw, $file_hash, $key_raw ) ) { 1473 reset_mbstring_encoding(); 1474 return true; 1475 } 1476 } 1477 } 1478 1479 reset_mbstring_encoding(); 1480 1481 return new WP_Error( 1482 'signature_verification_failed', 1483 sprintf( 1484 /* translators: %s: The filename of the package. */ 1485 __( 'The authenticity of %s could not be verified.' ), 1486 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1487 ), 1488 // Error data helpful for debugging: 1489 array( 1490 'filename' => $filename_for_errors, 1491 'keys' => $trusted_keys, 1492 'signatures' => $signatures, 1493 'hash' => bin2hex( $file_hash ), 1494 'skipped_key' => $skipped_key, 1495 'skipped_sig' => $skipped_signature, 1496 'php' => phpversion(), 1497 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1498 ) 1499 ); 1500 } 1501 1502 /** 1503 * Retrieves the list of signing keys trusted by WordPress. 1504 * 1505 * @since 5.2.0 1506 * 1507 * @return string[] Array of base64-encoded signing keys. 1508 */ 1509 function wp_trusted_keys() { 1510 $trusted_keys = array(); 1511 1512 if ( time() < 1617235200 ) { 1513 // WordPress.org Key #1 - This key is only valid before April 1st, 2021. 1514 $trusted_keys[] = 'fRPyrxb/MvVLbdsYi+OOEv4xc+Eqpsj+kkAS6gNOkI0='; 1515 } 1516 1517 // TODO: Add key #2 with longer expiration. 1518 1519 /** 1520 * Filters the valid signing keys used to verify the contents of files. 1521 * 1522 * @since 5.2.0 1523 * 1524 * @param string[] $trusted_keys The trusted keys that may sign packages. 1525 */ 1526 return apply_filters( 'wp_trusted_keys', $trusted_keys ); 1527 } 1528 1529 /** 1530 * Unzips a specified ZIP file to a location on the filesystem via the WordPress 1531 * Filesystem Abstraction. 1532 * 1533 * Assumes that WP_Filesystem() has already been called and set up. Does not extract 1534 * a root-level __MACOSX directory, if present. 1535 * 1536 * Attempts to increase the PHP memory limit to 256M before uncompressing. However, 1537 * the most memory required shouldn't be much larger than the archive itself. 1538 * 1539 * @since 2.5.0 1540 * 1541 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1542 * 1543 * @param string $file Full path and filename of ZIP archive. 1544 * @param string $to Full path on the filesystem to extract archive to. 1545 * @return true|WP_Error True on success, WP_Error on failure. 1546 */ 1547 function unzip_file( $file, $to ) { 1548 global $wp_filesystem; 1549 1550 if ( ! $wp_filesystem || ! is_object( $wp_filesystem ) ) { 1551 return new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) ); 1552 } 1553 1554 // Unzip can use a lot of memory, but not this much hopefully. 1555 wp_raise_memory_limit( 'admin' ); 1556 1557 $needed_dirs = array(); 1558 $to = trailingslashit( $to ); 1559 1560 // Determine any parent directories needed (of the upgrade directory). 1561 if ( ! $wp_filesystem->is_dir( $to ) ) { // Only do parents if no children exist. 1562 $path = preg_split( '![/\\\]!', untrailingslashit( $to ) ); 1563 for ( $i = count( $path ); $i >= 0; $i-- ) { 1564 if ( empty( $path[ $i ] ) ) { 1565 continue; 1566 } 1567 1568 $dir = implode( '/', array_slice( $path, 0, $i + 1 ) ); 1569 if ( preg_match( '!^[a-z]:$!i', $dir ) ) { // Skip it if it looks like a Windows Drive letter. 1570 continue; 1571 } 1572 1573 if ( ! $wp_filesystem->is_dir( $dir ) ) { 1574 $needed_dirs[] = $dir; 1575 } else { 1576 break; // A folder exists, therefore we don't need to check the levels below this. 1577 } 1578 } 1579 } 1580 1581 /** 1582 * Filters whether to use ZipArchive to unzip archives. 1583 * 1584 * @since 3.0.0 1585 * 1586 * @param bool $ziparchive Whether to use ZipArchive. Default true. 1587 */ 1588 if ( class_exists( 'ZipArchive', false ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) { 1589 $result = _unzip_file_ziparchive( $file, $to, $needed_dirs ); 1590 if ( true === $result ) { 1591 return $result; 1592 } elseif ( is_wp_error( $result ) ) { 1593 if ( 'incompatible_archive' !== $result->get_error_code() ) { 1594 return $result; 1595 } 1596 } 1597 } 1598 // Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file. 1599 return _unzip_file_pclzip( $file, $to, $needed_dirs ); 1600 } 1601 1602 /** 1603 * Attempts to unzip an archive using the ZipArchive class. 1604 * 1605 * This function should not be called directly, use `unzip_file()` instead. 1606 * 1607 * Assumes that WP_Filesystem() has already been called and set up. 1608 * 1609 * @since 3.0.0 1610 * @access private 1611 * 1612 * @see unzip_file() 1613 * 1614 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1615 * 1616 * @param string $file Full path and filename of ZIP archive. 1617 * @param string $to Full path on the filesystem to extract archive to. 1618 * @param string[] $needed_dirs A partial list of required folders needed to be created. 1619 * @return true|WP_Error True on success, WP_Error on failure. 1620 */ 1621 function _unzip_file_ziparchive( $file, $to, $needed_dirs = array() ) { 1622 global $wp_filesystem; 1623 1624 $z = new ZipArchive(); 1625 1626 $zopen = $z->open( $file, ZIPARCHIVE::CHECKCONS ); 1627 1628 if ( true !== $zopen ) { 1629 return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), array( 'ziparchive_error' => $zopen ) ); 1630 } 1631 1632 $uncompressed_size = 0; 1633 1634 for ( $i = 0; $i < $z->numFiles; $i++ ) { 1635 $info = $z->statIndex( $i ); 1636 1637 if ( ! $info ) { 1638 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) ); 1639 } 1640 1641 if ( '__MACOSX/' === substr( $info['name'], 0, 9 ) ) { // Skip the OS X-created __MACOSX directory. 1642 continue; 1643 } 1644 1645 // Don't extract invalid files: 1646 if ( 0 !== validate_file( $info['name'] ) ) { 1647 continue; 1648 } 1649 1650 $uncompressed_size += $info['size']; 1651 1652 $dirname = dirname( $info['name'] ); 1653 1654 if ( '/' === substr( $info['name'], -1 ) ) { 1655 // Directory. 1656 $needed_dirs[] = $to . untrailingslashit( $info['name'] ); 1657 } elseif ( '.' !== $dirname ) { 1658 // Path to a file. 1659 $needed_dirs[] = $to . untrailingslashit( $dirname ); 1660 } 1661 } 1662 1663 /* 1664 * disk_free_space() could return false. Assume that any falsey value is an error. 1665 * A disk that has zero free bytes has bigger problems. 1666 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer. 1667 */ 1668 if ( wp_doing_cron() ) { 1669 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( WP_CONTENT_DIR ) : false; 1670 1671 if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space ) { 1672 return new WP_Error( 1673 'disk_full_unzip_file', 1674 __( 'Could not copy files. You may have run out of disk space.' ), 1675 compact( 'uncompressed_size', 'available_space' ) 1676 ); 1677 } 1678 } 1679 1680 $needed_dirs = array_unique( $needed_dirs ); 1681 1682 foreach ( $needed_dirs as $dir ) { 1683 // Check the parent folders of the folders all exist within the creation array. 1684 if ( untrailingslashit( $to ) === $dir ) { // Skip over the working directory, we know this exists (or will exist). 1685 continue; 1686 } 1687 1688 if ( strpos( $dir, $to ) === false ) { // If the directory is not within the working directory, skip it. 1689 continue; 1690 } 1691 1692 $parent_folder = dirname( $dir ); 1693 1694 while ( ! empty( $parent_folder ) 1695 && untrailingslashit( $to ) !== $parent_folder 1696 && ! in_array( $parent_folder, $needed_dirs, true ) 1697 ) { 1698 $needed_dirs[] = $parent_folder; 1699 $parent_folder = dirname( $parent_folder ); 1700 } 1701 } 1702 1703 asort( $needed_dirs ); 1704 1705 // Create those directories if need be: 1706 foreach ( $needed_dirs as $_dir ) { 1707 // Only check to see if the Dir exists upon creation failure. Less I/O this way. 1708 if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) { 1709 return new WP_Error( 'mkdir_failed_ziparchive', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) ); 1710 } 1711 } 1712 unset( $needed_dirs ); 1713 1714 for ( $i = 0; $i < $z->numFiles; $i++ ) { 1715 $info = $z->statIndex( $i ); 1716 1717 if ( ! $info ) { 1718 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) ); 1719 } 1720 1721 if ( '/' === substr( $info['name'], -1 ) ) { // Directory. 1722 continue; 1723 } 1724 1725 if ( '__MACOSX/' === substr( $info['name'], 0, 9 ) ) { // Don't extract the OS X-created __MACOSX directory files. 1726 continue; 1727 } 1728 1729 // Don't extract invalid files: 1730 if ( 0 !== validate_file( $info['name'] ) ) { 1731 continue; 1732 } 1733 1734 $contents = $z->getFromIndex( $i ); 1735 1736 if ( false === $contents ) { 1737 return new WP_Error( 'extract_failed_ziparchive', __( 'Could not extract file from archive.' ), $info['name'] ); 1738 } 1739 1740 if ( ! $wp_filesystem->put_contents( $to . $info['name'], $contents, FS_CHMOD_FILE ) ) { 1741 return new WP_Error( 'copy_failed_ziparchive', __( 'Could not copy file.' ), $info['name'] ); 1742 } 1743 } 1744 1745 $z->close(); 1746 1747 return true; 1748 } 1749 1750 /** 1751 * Attempts to unzip an archive using the PclZip library. 1752 * 1753 * This function should not be called directly, use `unzip_file()` instead. 1754 * 1755 * Assumes that WP_Filesystem() has already been called and set up. 1756 * 1757 * @since 3.0.0 1758 * @access private 1759 * 1760 * @see unzip_file() 1761 * 1762 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1763 * 1764 * @param string $file Full path and filename of ZIP archive. 1765 * @param string $to Full path on the filesystem to extract archive to. 1766 * @param string[] $needed_dirs A partial list of required folders needed to be created. 1767 * @return true|WP_Error True on success, WP_Error on failure. 1768 */ 1769 function _unzip_file_pclzip( $file, $to, $needed_dirs = array() ) { 1770 global $wp_filesystem; 1771 1772 mbstring_binary_safe_encoding(); 1773 1774 require_once ABSPATH . 'wp-admin/includes/class-pclzip.php'; 1775 1776 $archive = new PclZip( $file ); 1777 1778 $archive_files = $archive->extract( PCLZIP_OPT_EXTRACT_AS_STRING ); 1779 1780 reset_mbstring_encoding(); 1781 1782 // Is the archive valid? 1783 if ( ! is_array( $archive_files ) ) { 1784 return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), $archive->errorInfo( true ) ); 1785 } 1786 1787 if ( 0 === count( $archive_files ) ) { 1788 return new WP_Error( 'empty_archive_pclzip', __( 'Empty archive.' ) ); 1789 } 1790 1791 $uncompressed_size = 0; 1792 1793 // Determine any children directories needed (From within the archive). 1794 foreach ( $archive_files as $file ) { 1795 if ( '__MACOSX/' === substr( $file['filename'], 0, 9 ) ) { // Skip the OS X-created __MACOSX directory. 1796 continue; 1797 } 1798 1799 $uncompressed_size += $file['size']; 1800 1801 $needed_dirs[] = $to . untrailingslashit( $file['folder'] ? $file['filename'] : dirname( $file['filename'] ) ); 1802 } 1803 1804 /* 1805 * disk_free_space() could return false. Assume that any falsey value is an error. 1806 * A disk that has zero free bytes has bigger problems. 1807 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer. 1808 */ 1809 if ( wp_doing_cron() ) { 1810 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( WP_CONTENT_DIR ) : false; 1811 1812 if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space ) { 1813 return new WP_Error( 1814 'disk_full_unzip_file', 1815 __( 'Could not copy files. You may have run out of disk space.' ), 1816 compact( 'uncompressed_size', 'available_space' ) 1817 ); 1818 } 1819 } 1820 1821 $needed_dirs = array_unique( $needed_dirs ); 1822 1823 foreach ( $needed_dirs as $dir ) { 1824 // Check the parent folders of the folders all exist within the creation array. 1825 if ( untrailingslashit( $to ) === $dir ) { // Skip over the working directory, we know this exists (or will exist). 1826 continue; 1827 } 1828 1829 if ( strpos( $dir, $to ) === false ) { // If the directory is not within the working directory, skip it. 1830 continue; 1831 } 1832 1833 $parent_folder = dirname( $dir ); 1834 1835 while ( ! empty( $parent_folder ) 1836 && untrailingslashit( $to ) !== $parent_folder 1837 && ! in_array( $parent_folder, $needed_dirs, true ) 1838 ) { 1839 $needed_dirs[] = $parent_folder; 1840 $parent_folder = dirname( $parent_folder ); 1841 } 1842 } 1843 1844 asort( $needed_dirs ); 1845 1846 // Create those directories if need be: 1847 foreach ( $needed_dirs as $_dir ) { 1848 // Only check to see if the dir exists upon creation failure. Less I/O this way. 1849 if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) { 1850 return new WP_Error( 'mkdir_failed_pclzip', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) ); 1851 } 1852 } 1853 unset( $needed_dirs ); 1854 1855 // Extract the files from the zip. 1856 foreach ( $archive_files as $file ) { 1857 if ( $file['folder'] ) { 1858 continue; 1859 } 1860 1861 if ( '__MACOSX/' === substr( $file['filename'], 0, 9 ) ) { // Don't extract the OS X-created __MACOSX directory files. 1862 continue; 1863 } 1864 1865 // Don't extract invalid files: 1866 if ( 0 !== validate_file( $file['filename'] ) ) { 1867 continue; 1868 } 1869 1870 if ( ! $wp_filesystem->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE ) ) { 1871 return new WP_Error( 'copy_failed_pclzip', __( 'Could not copy file.' ), $file['filename'] ); 1872 } 1873 } 1874 1875 return true; 1876 } 1877 1878 /** 1879 * Copies a directory from one location to another via the WordPress Filesystem 1880 * Abstraction. 1881 * 1882 * Assumes that WP_Filesystem() has already been called and setup. 1883 * 1884 * @since 2.5.0 1885 * 1886 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1887 * 1888 * @param string $from Source directory. 1889 * @param string $to Destination directory. 1890 * @param string[] $skip_list An array of files/folders to skip copying. 1891 * @return true|WP_Error True on success, WP_Error on failure. 1892 */ 1893 function copy_dir( $from, $to, $skip_list = array() ) { 1894 global $wp_filesystem; 1895 1896 $dirlist = $wp_filesystem->dirlist( $from ); 1897 1898 if ( false === $dirlist ) { 1899 return new WP_Error( 'dirlist_failed_copy_dir', __( 'Directory listing failed.' ), basename( $to ) ); 1900 } 1901 1902 $from = trailingslashit( $from ); 1903 $to = trailingslashit( $to ); 1904 1905 foreach ( (array) $dirlist as $filename => $fileinfo ) { 1906 if ( in_array( $filename, $skip_list, true ) ) { 1907 continue; 1908 } 1909 1910 if ( 'f' === $fileinfo['type'] ) { 1911 if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { 1912 // If copy failed, chmod file to 0644 and try again. 1913 $wp_filesystem->chmod( $to . $filename, FS_CHMOD_FILE ); 1914 1915 if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { 1916 return new WP_Error( 'copy_failed_copy_dir', __( 'Could not copy file.' ), $to . $filename ); 1917 } 1918 } 1919 1920 wp_opcache_invalidate( $to . $filename ); 1921 } elseif ( 'd' === $fileinfo['type'] ) { 1922 if ( ! $wp_filesystem->is_dir( $to . $filename ) ) { 1923 if ( ! $wp_filesystem->mkdir( $to . $filename, FS_CHMOD_DIR ) ) { 1924 return new WP_Error( 'mkdir_failed_copy_dir', __( 'Could not create directory.' ), $to . $filename ); 1925 } 1926 } 1927 1928 // Generate the $sub_skip_list for the subdirectory as a sub-set of the existing $skip_list. 1929 $sub_skip_list = array(); 1930 1931 foreach ( $skip_list as $skip_item ) { 1932 if ( 0 === strpos( $skip_item, $filename . '/' ) ) { 1933 $sub_skip_list[] = preg_replace( '!^' . preg_quote( $filename, '!' ) . '/!i', '', $skip_item ); 1934 } 1935 } 1936 1937 $result = copy_dir( $from . $filename, $to . $filename, $sub_skip_list ); 1938 1939 if ( is_wp_error( $result ) ) { 1940 return $result; 1941 } 1942 } 1943 } 1944 1945 return true; 1946 } 1947 1948 /** 1949 * Initializes and connects the WordPress Filesystem Abstraction classes. 1950 * 1951 * This function will include the chosen transport and attempt connecting. 1952 * 1953 * Plugins may add extra transports, And force WordPress to use them by returning 1954 * the filename via the {@see 'filesystem_method_file'} filter. 1955 * 1956 * @since 2.5.0 1957 * 1958 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1959 * 1960 * @param array|false $args Optional. Connection args, These are passed 1961 * directly to the `WP_Filesystem_*()` classes. 1962 * Default false. 1963 * @param string|false $context Optional. Context for get_filesystem_method(). 1964 * Default false. 1965 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 1966 * Default false. 1967 * @return bool|null True on success, false on failure, 1968 * null if the filesystem method class file does not exist. 1969 */ 1970 function WP_Filesystem( $args = false, $context = false, $allow_relaxed_file_ownership = false ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid 1971 global $wp_filesystem; 1972 1973 require_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'; 1974 1975 $method = get_filesystem_method( $args, $context, $allow_relaxed_file_ownership ); 1976 1977 if ( ! $method ) { 1978 return false; 1979 } 1980 1981 if ( ! class_exists( "WP_Filesystem_$method" ) ) { 1982 1983 /** 1984 * Filters the path for a specific filesystem method class file. 1985 * 1986 * @since 2.6.0 1987 * 1988 * @see get_filesystem_method() 1989 * 1990 * @param string $path Path to the specific filesystem method class file. 1991 * @param string $method The filesystem method to use. 1992 */ 1993 $abstraction_file = apply_filters( 'filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method ); 1994 1995 if ( ! file_exists( $abstraction_file ) ) { 1996 return; 1997 } 1998 1999 require_once $abstraction_file; 2000 } 2001 $method = "WP_Filesystem_$method"; 2002 2003 $wp_filesystem = new $method( $args ); 2004 2005 /* 2006 * Define the timeouts for the connections. Only available after the constructor is called 2007 * to allow for per-transport overriding of the default. 2008 */ 2009 if ( ! defined( 'FS_CONNECT_TIMEOUT' ) ) { 2010 define( 'FS_CONNECT_TIMEOUT', 30 ); 2011 } 2012 if ( ! defined( 'FS_TIMEOUT' ) ) { 2013 define( 'FS_TIMEOUT', 30 ); 2014 } 2015 2016 if ( is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) { 2017 return false; 2018 } 2019 2020 if ( ! $wp_filesystem->connect() ) { 2021 return false; // There was an error connecting to the server. 2022 } 2023 2024 // Set the permission constants if not already set. 2025 if ( ! defined( 'FS_CHMOD_DIR' ) ) { 2026 define( 'FS_CHMOD_DIR', ( fileperms( ABSPATH ) & 0777 | 0755 ) ); 2027 } 2028 if ( ! defined( 'FS_CHMOD_FILE' ) ) { 2029 define( 'FS_CHMOD_FILE', ( fileperms( ABSPATH . 'index.php' ) & 0777 | 0644 ) ); 2030 } 2031 2032 return true; 2033 } 2034 2035 /** 2036 * Determines which method to use for reading, writing, modifying, or deleting 2037 * files on the filesystem. 2038 * 2039 * The priority of the transports are: Direct, SSH2, FTP PHP Extension, FTP Sockets 2040 * (Via Sockets class, or `fsockopen()`). Valid values for these are: 'direct', 'ssh2', 2041 * 'ftpext' or 'ftpsockets'. 2042 * 2043 * The return value can be overridden by defining the `FS_METHOD` constant in `wp-config.php`, 2044 * or filtering via {@see 'filesystem_method'}. 2045 * 2046 * @link https://wordpress.org/support/article/editing-wp-config-php/#wordpress-upgrade-constants 2047 * 2048 * Plugins may define a custom transport handler, See WP_Filesystem(). 2049 * 2050 * @since 2.5.0 2051 * 2052 * @global callable $_wp_filesystem_direct_method 2053 * 2054 * @param array $args Optional. Connection details. Default empty array. 2055 * @param string $context Optional. Full path to the directory that is tested 2056 * for being writable. Default empty. 2057 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 2058 * Default false. 2059 * @return string The transport to use, see description for valid return values. 2060 */ 2061 function get_filesystem_method( $args = array(), $context = '', $allow_relaxed_file_ownership = false ) { 2062 // Please ensure that this is either 'direct', 'ssh2', 'ftpext', or 'ftpsockets'. 2063 $method = defined( 'FS_METHOD' ) ? FS_METHOD : false; 2064 2065 if ( ! $context ) { 2066 $context = WP_CONTENT_DIR; 2067 } 2068 2069 // If the directory doesn't exist (wp-content/languages) then use the parent directory as we'll create it. 2070 if ( WP_LANG_DIR === $context && ! is_dir( $context ) ) { 2071 $context = dirname( $context ); 2072 } 2073 2074 $context = trailingslashit( $context ); 2075 2076 if ( ! $method ) { 2077 2078 $temp_file_name = $context . 'temp-write-test-' . str_replace( '.', '-', uniqid( '', true ) ); 2079 $temp_handle = @fopen( $temp_file_name, 'w' ); 2080 if ( $temp_handle ) { 2081 2082 // Attempt to determine the file owner of the WordPress files, and that of newly created files. 2083 $wp_file_owner = false; 2084 $temp_file_owner = false; 2085 if ( function_exists( 'fileowner' ) ) { 2086 $wp_file_owner = @fileowner( __FILE__ ); 2087 $temp_file_owner = @fileowner( $temp_file_name ); 2088 } 2089 2090 if ( false !== $wp_file_owner && $wp_file_owner === $temp_file_owner ) { 2091 /* 2092 * WordPress is creating files as the same owner as the WordPress files, 2093 * this means it's safe to modify & create new files via PHP. 2094 */ 2095 $method = 'direct'; 2096 $GLOBALS['_wp_filesystem_direct_method'] = 'file_owner'; 2097 } elseif ( $allow_relaxed_file_ownership ) { 2098 /* 2099 * The $context directory is writable, and $allow_relaxed_file_ownership is set, 2100 * this means we can modify files safely in this directory. 2101 * This mode doesn't create new files, only alter existing ones. 2102 */ 2103 $method = 'direct'; 2104 $GLOBALS['_wp_filesystem_direct_method'] = 'relaxed_ownership'; 2105 } 2106 2107 fclose( $temp_handle ); 2108 @unlink( $temp_file_name ); 2109 } 2110 } 2111 2112 if ( ! $method && isset( $args['connection_type'] ) && 'ssh' === $args['connection_type'] && extension_loaded( 'ssh2' ) ) { 2113 $method = 'ssh2'; 2114 } 2115 if ( ! $method && extension_loaded( 'ftp' ) ) { 2116 $method = 'ftpext'; 2117 } 2118 if ( ! $method && ( extension_loaded( 'sockets' ) || function_exists( 'fsockopen' ) ) ) { 2119 $method = 'ftpsockets'; // Sockets: Socket extension; PHP Mode: FSockopen / fwrite / fread. 2120 } 2121 2122 /** 2123 * Filters the filesystem method to use. 2124 * 2125 * @since 2.6.0 2126 * 2127 * @param string $method Filesystem method to return. 2128 * @param array $args An array of connection details for the method. 2129 * @param string $context Full path to the directory that is tested for being writable. 2130 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable. 2131 */ 2132 return apply_filters( 'filesystem_method', $method, $args, $context, $allow_relaxed_file_ownership ); 2133 } 2134 2135 /** 2136 * Displays a form to the user to request for their FTP/SSH details in order 2137 * to connect to the filesystem. 2138 * 2139 * All chosen/entered details are saved, excluding the password. 2140 * 2141 * Hostnames may be in the form of hostname:portnumber (eg: wordpress.org:2467) 2142 * to specify an alternate FTP/SSH port. 2143 * 2144 * Plugins may override this form by returning true|false via the {@see 'request_filesystem_credentials'} filter. 2145 * 2146 * @since 2.5.0 2147 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2148 * 2149 * @global string $pagenow The filename of the current screen. 2150 * 2151 * @param string $form_post The URL to post the form to. 2152 * @param string $type Optional. Chosen type of filesystem. Default empty. 2153 * @param bool|WP_Error $error Optional. Whether the current request has failed 2154 * to connect, or an error object. Default false. 2155 * @param string $context Optional. Full path to the directory that is tested 2156 * for being writable. Default empty. 2157 * @param array $extra_fields Optional. Extra `POST` fields to be checked 2158 * for inclusion in the post. Default null. 2159 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 2160 * Default false. 2161 * @return bool|array True if no filesystem credentials are required, 2162 * false if they are required but have not been provided, 2163 * array of credentials if they are required and have been provided. 2164 */ 2165 function request_filesystem_credentials( $form_post, $type = '', $error = false, $context = '', $extra_fields = null, $allow_relaxed_file_ownership = false ) { 2166 global $pagenow; 2167 2168 /** 2169 * Filters the filesystem credentials. 2170 * 2171 * Returning anything other than an empty string will effectively short-circuit 2172 * output of the filesystem credentials form, returning that value instead. 2173 * 2174 * A filter should return true if no filesystem credentials are required, false if they are required but have not been 2175 * provided, or an array of credentials if they are required and have been provided. 2176 * 2177 * @since 2.5.0 2178 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2179 * 2180 * @param mixed $credentials Credentials to return instead. Default empty string. 2181 * @param string $form_post The URL to post the form to. 2182 * @param string $type Chosen type of filesystem. 2183 * @param bool|WP_Error $error Whether the current request has failed to connect, 2184 * or an error object. 2185 * @param string $context Full path to the directory that is tested for 2186 * being writable. 2187 * @param array $extra_fields Extra POST fields. 2188 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable. 2189 */ 2190 $req_cred = apply_filters( 'request_filesystem_credentials', '', $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership ); 2191 2192 if ( '' !== $req_cred ) { 2193 return $req_cred; 2194 } 2195 2196 if ( empty( $type ) ) { 2197 $type = get_filesystem_method( array(), $context, $allow_relaxed_file_ownership ); 2198 } 2199 2200 if ( 'direct' === $type ) { 2201 return true; 2202 } 2203 2204 if ( is_null( $extra_fields ) ) { 2205 $extra_fields = array( 'version', 'locale' ); 2206 } 2207 2208 $credentials = get_option( 2209 'ftp_credentials', 2210 array( 2211 'hostname' => '', 2212 'username' => '', 2213 ) 2214 ); 2215 2216 $submitted_form = wp_unslash( $_POST ); 2217 2218 // Verify nonce, or unset submitted form field values on failure. 2219 if ( ! isset( $_POST['_fs_nonce'] ) || ! wp_verify_nonce( $_POST['_fs_nonce'], 'filesystem-credentials' ) ) { 2220 unset( 2221 $submitted_form['hostname'], 2222 $submitted_form['username'], 2223 $submitted_form['password'], 2224 $submitted_form['public_key'], 2225 $submitted_form['private_key'], 2226 $submitted_form['connection_type'] 2227 ); 2228 } 2229 2230 $ftp_constants = array( 2231 'hostname' => 'FTP_HOST', 2232 'username' => 'FTP_USER', 2233 'password' => 'FTP_PASS', 2234 'public_key' => 'FTP_PUBKEY', 2235 'private_key' => 'FTP_PRIKEY', 2236 ); 2237 2238 // If defined, set it to that. Else, if POST'd, set it to that. If not, set it to an empty string. 2239 // Otherwise, keep it as it previously was (saved details in option). 2240 foreach ( $ftp_constants as $key => $constant ) { 2241 if ( defined( $constant ) ) { 2242 $credentials[ $key ] = constant( $constant ); 2243 } elseif ( ! empty( $submitted_form[ $key ] ) ) { 2244 $credentials[ $key ] = $submitted_form[ $key ]; 2245 } elseif ( ! isset( $credentials[ $key ] ) ) { 2246 $credentials[ $key ] = ''; 2247 } 2248 } 2249 2250 // Sanitize the hostname, some people might pass in odd data. 2251 $credentials['hostname'] = preg_replace( '|\w+://|', '', $credentials['hostname'] ); // Strip any schemes off. 2252 2253 if ( strpos( $credentials['hostname'], ':' ) ) { 2254 list( $credentials['hostname'], $credentials['port'] ) = explode( ':', $credentials['hostname'], 2 ); 2255 if ( ! is_numeric( $credentials['port'] ) ) { 2256 unset( $credentials['port'] ); 2257 } 2258 } else { 2259 unset( $credentials['port'] ); 2260 } 2261 2262 if ( ( defined( 'FTP_SSH' ) && FTP_SSH ) || ( defined( 'FS_METHOD' ) && 'ssh2' === FS_METHOD ) ) { 2263 $credentials['connection_type'] = 'ssh'; 2264 } elseif ( ( defined( 'FTP_SSL' ) && FTP_SSL ) && 'ftpext' === $type ) { // Only the FTP Extension understands SSL. 2265 $credentials['connection_type'] = 'ftps'; 2266 } elseif ( ! empty( $submitted_form['connection_type'] ) ) { 2267 $credentials['connection_type'] = $submitted_form['connection_type']; 2268 } elseif ( ! isset( $credentials['connection_type'] ) ) { // All else fails (and it's not defaulted to something else saved), default to FTP. 2269 $credentials['connection_type'] = 'ftp'; 2270 } 2271 2272 if ( ! $error 2273 && ( ! empty( $credentials['hostname'] ) && ! empty( $credentials['username'] ) && ! empty( $credentials['password'] ) 2274 || 'ssh' === $credentials['connection_type'] && ! empty( $credentials['public_key'] ) && ! empty( $credentials['private_key'] ) 2275 ) 2276 ) { 2277 $stored_credentials = $credentials; 2278 2279 if ( ! empty( $stored_credentials['port'] ) ) { // Save port as part of hostname to simplify above code. 2280 $stored_credentials['hostname'] .= ':' . $stored_credentials['port']; 2281 } 2282 2283 unset( 2284 $stored_credentials['password'], 2285 $stored_credentials['port'], 2286 $stored_credentials['private_key'], 2287 $stored_credentials['public_key'] 2288 ); 2289 2290 if ( ! wp_installing() ) { 2291 update_option( 'ftp_credentials', $stored_credentials ); 2292 } 2293 2294 return $credentials; 2295 } 2296 2297 $hostname = isset( $credentials['hostname'] ) ? $credentials['hostname'] : ''; 2298 $username = isset( $credentials['username'] ) ? $credentials['username'] : ''; 2299 $public_key = isset( $credentials['public_key'] ) ? $credentials['public_key'] : ''; 2300 $private_key = isset( $credentials['private_key'] ) ? $credentials['private_key'] : ''; 2301 $port = isset( $credentials['port'] ) ? $credentials['port'] : ''; 2302 $connection_type = isset( $credentials['connection_type'] ) ? $credentials['connection_type'] : ''; 2303 2304 if ( $error ) { 2305 $error_string = __( '<strong>Error</strong>: Could not connect to the server. Please verify the settings are correct.' ); 2306 if ( is_wp_error( $error ) ) { 2307 $error_string = esc_html( $error->get_error_message() ); 2308 } 2309 echo '<div id="message" class="error"><p>' . $error_string . '</p></div>'; 2310 } 2311 2312 $types = array(); 2313 if ( extension_loaded( 'ftp' ) || extension_loaded( 'sockets' ) || function_exists( 'fsockopen' ) ) { 2314 $types['ftp'] = __( 'FTP' ); 2315 } 2316 if ( extension_loaded( 'ftp' ) ) { // Only this supports FTPS. 2317 $types['ftps'] = __( 'FTPS (SSL)' ); 2318 } 2319 if ( extension_loaded( 'ssh2' ) ) { 2320 $types['ssh'] = __( 'SSH2' ); 2321 } 2322 2323 /** 2324 * Filters the connection types to output to the filesystem credentials form. 2325 * 2326 * @since 2.9.0 2327 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2328 * 2329 * @param string[] $types Types of connections. 2330 * @param array $credentials Credentials to connect with. 2331 * @param string $type Chosen filesystem method. 2332 * @param bool|WP_Error $error Whether the current request has failed to connect, 2333 * or an error object. 2334 * @param string $context Full path to the directory that is tested for being writable. 2335 */ 2336 $types = apply_filters( 'fs_ftp_connection_types', $types, $credentials, $type, $error, $context ); 2337 ?> 2338 <form action="<?php echo esc_url( $form_post ); ?>" method="post"> 2339 <div id="request-filesystem-credentials-form" class="request-filesystem-credentials-form"> 2340 <?php 2341 // Print a H1 heading in the FTP credentials modal dialog, default is a H2. 2342 $heading_tag = 'h2'; 2343 if ( 'plugins.php' === $pagenow || 'plugin-install.php' === $pagenow ) { 2344 $heading_tag = 'h1'; 2345 } 2346 echo "<$heading_tag id='request-filesystem-credentials-title'>" . __( 'Connection Information' ) . "</$heading_tag>"; 2347 ?> 2348 <p id="request-filesystem-credentials-desc"> 2349 <?php 2350 $label_user = __( 'Username' ); 2351 $label_pass = __( 'Password' ); 2352 _e( 'To perform the requested action, WordPress needs to access your web server.' ); 2353 echo ' '; 2354 if ( ( isset( $types['ftp'] ) || isset( $types['ftps'] ) ) ) { 2355 if ( isset( $types['ssh'] ) ) { 2356 _e( 'Please enter your FTP or SSH credentials to proceed.' ); 2357 $label_user = __( 'FTP/SSH Username' ); 2358 $label_pass = __( 'FTP/SSH Password' ); 2359 } else { 2360 _e( 'Please enter your FTP credentials to proceed.' ); 2361 $label_user = __( 'FTP Username' ); 2362 $label_pass = __( 'FTP Password' ); 2363 } 2364 echo ' '; 2365 } 2366 _e( 'If you do not remember your credentials, you should contact your web host.' ); 2367 2368 $hostname_value = esc_attr( $hostname ); 2369 if ( ! empty( $port ) ) { 2370 $hostname_value .= ":$port"; 2371 } 2372 2373 $password_value = ''; 2374 if ( defined( 'FTP_PASS' ) ) { 2375 $password_value = '*****'; 2376 } 2377 ?> 2378 </p> 2379 <label for="hostname"> 2380 <span class="field-title"><?php _e( 'Hostname' ); ?></span> 2381 <input name="hostname" type="text" id="hostname" aria-describedby="request-filesystem-credentials-desc" class="code" placeholder="<?php esc_attr_e( 'example: www.wordpress.org' ); ?>" value="<?php echo $hostname_value; ?>"<?php disabled( defined( 'FTP_HOST' ) ); ?> /> 2382 </label> 2383 <div class="ftp-username"> 2384 <label for="username"> 2385 <span class="field-title"><?php echo $label_user; ?></span> 2386 <input name="username" type="text" id="username" value="<?php echo esc_attr( $username ); ?>"<?php disabled( defined( 'FTP_USER' ) ); ?> /> 2387 </label> 2388 </div> 2389 <div class="ftp-password"> 2390 <label for="password"> 2391 <span class="field-title"><?php echo $label_pass; ?></span> 2392 <input name="password" type="password" id="password" value="<?php echo $password_value; ?>"<?php disabled( defined( 'FTP_PASS' ) ); ?> /> 2393 <?php 2394 if ( ! defined( 'FTP_PASS' ) ) { 2395 _e( 'This password will not be stored on the server.' );} 2396 ?> 2397 </label> 2398 </div> 2399 <fieldset> 2400 <legend><?php _e( 'Connection Type' ); ?></legend> 2401 <?php 2402 $disabled = disabled( ( defined( 'FTP_SSL' ) && FTP_SSL ) || ( defined( 'FTP_SSH' ) && FTP_SSH ), true, false ); 2403 foreach ( $types as $name => $text ) : 2404 ?> 2405 <label for="<?php echo esc_attr( $name ); ?>"> 2406 <input type="radio" name="connection_type" id="<?php echo esc_attr( $name ); ?>" value="<?php echo esc_attr( $name ); ?>" <?php checked( $name, $connection_type ); ?> <?php echo $disabled; ?> /> 2407 <?php echo $text; ?> 2408 </label> 2409 <?php 2410 endforeach; 2411 ?> 2412 </fieldset> 2413 <?php 2414 if ( isset( $types['ssh'] ) ) { 2415 $hidden_class = ''; 2416 if ( 'ssh' !== $connection_type || empty( $connection_type ) ) { 2417 $hidden_class = ' class="hidden"'; 2418 } 2419 ?> 2420 <fieldset id="ssh-keys"<?php echo $hidden_class; ?>> 2421 <legend><?php _e( 'Authentication Keys' ); ?></legend> 2422 <label for="public_key"> 2423 <span class="field-title"><?php _e( 'Public Key:' ); ?></span> 2424 <input name="public_key" type="text" id="public_key" aria-describedby="auth-keys-desc" value="<?php echo esc_attr( $public_key ); ?>"<?php disabled( defined( 'FTP_PUBKEY' ) ); ?> /> 2425 </label> 2426 <label for="private_key"> 2427 <span class="field-title"><?php _e( 'Private Key:' ); ?></span> 2428 <input name="private_key" type="text" id="private_key" value="<?php echo esc_attr( $private_key ); ?>"<?php disabled( defined( 'FTP_PRIKEY' ) ); ?> /> 2429 </label> 2430 <p id="auth-keys-desc"><?php _e( 'Enter the location on the server where the public and private keys are located. If a passphrase is needed, enter that in the password field above.' ); ?></p> 2431 </fieldset> 2432 <?php 2433 } 2434 2435 foreach ( (array) $extra_fields as $field ) { 2436 if ( isset( $submitted_form[ $field ] ) ) { 2437 echo '<input type="hidden" name="' . esc_attr( $field ) . '" value="' . esc_attr( $submitted_form[ $field ] ) . '" />'; 2438 } 2439 } 2440 2441 // Make sure the `submit_button()` function is available during the REST API call 2442 // from WP_Site_Health_Auto_Updates::test_check_wp_filesystem_method(). 2443 if ( ! function_exists( 'submit_button' ) ) { 2444 require_once ABSPATH . '/wp-admin/includes/template.php'; 2445 } 2446 ?> 2447 <p class="request-filesystem-credentials-action-buttons"> 2448 <?php wp_nonce_field( 'filesystem-credentials', '_fs_nonce', false, true ); ?> 2449 <button class="button cancel-button" data-js-action="close" type="button"><?php _e( 'Cancel' ); ?></button> 2450 <?php submit_button( __( 'Proceed' ), '', 'upgrade', false ); ?> 2451 </p> 2452 </div> 2453 </form> 2454 <?php 2455 return false; 2456 } 2457 2458 /** 2459 * Prints the filesystem credentials modal when needed. 2460 * 2461 * @since 4.2.0 2462 */ 2463 function wp_print_request_filesystem_credentials_modal() { 2464 $filesystem_method = get_filesystem_method(); 2465 2466 ob_start(); 2467 $filesystem_credentials_are_stored = request_filesystem_credentials( self_admin_url() ); 2468 ob_end_clean(); 2469 2470 $request_filesystem_credentials = ( 'direct' !== $filesystem_method && ! $filesystem_credentials_are_stored ); 2471 if ( ! $request_filesystem_credentials ) { 2472 return; 2473 } 2474 ?> 2475 <div id="request-filesystem-credentials-dialog" class="notification-dialog-wrap request-filesystem-credentials-dialog"> 2476 <div class="notification-dialog-background"></div> 2477 <div class="notification-dialog" role="dialog" aria-labelledby="request-filesystem-credentials-title" tabindex="0"> 2478 <div class="request-filesystem-credentials-dialog-content"> 2479 <?php request_filesystem_credentials( site_url() ); ?> 2480 </div> 2481 </div> 2482 </div> 2483 <?php 2484 } 2485 2486 /** 2487 * Attempts to clear the opcode cache for an individual PHP file. 2488 * 2489 * This function can be called safely without having to check the file extension 2490 * or availability of the OPcache extension. 2491 * 2492 * Whether or not invalidation is possible is cached to improve performance. 2493 * 2494 * @since 5.5.0 2495 * 2496 * @link https://www.php.net/manual/en/function.opcache-invalidate.php 2497 * 2498 * @param string $filepath Path to the file, including extension, for which the opcode cache is to be cleared. 2499 * @param bool $force Invalidate even if the modification time is not newer than the file in cache. 2500 * Default false. 2501 * @return bool True if opcache was invalidated for `$filepath`, or there was nothing to invalidate. 2502 * False if opcache invalidation is not available, or is disabled via filter. 2503 */ 2504 function wp_opcache_invalidate( $filepath, $force = false ) { 2505 static $can_invalidate = null; 2506 2507 /* 2508 * Check to see if WordPress is able to run `opcache_invalidate()` or not, and cache the value. 2509 * 2510 * First, check to see if the function is available to call, then if the host has restricted 2511 * the ability to run the function to avoid a PHP warning. 2512 * 2513 * `opcache.restrict_api` can specify the path for files allowed to call `opcache_invalidate()`. 2514 * 2515 * If the host has this set, check whether the path in `opcache.restrict_api` matches 2516 * the beginning of the path of the origin file. 2517 * 2518 * `$_SERVER['SCRIPT_FILENAME']` approximates the origin file's path, but `realpath()` 2519 * is necessary because `SCRIPT_FILENAME` can be a relative path when run from CLI. 2520 * 2521 * For more details, see: 2522 * - https://www.php.net/manual/en/opcache.configuration.php 2523 * - https://www.php.net/manual/en/reserved.variables.server.php 2524 * - https://core.trac.wordpress.org/ticket/36455 2525 */ 2526 if ( null === $can_invalidate 2527 && function_exists( 'opcache_invalidate' ) 2528 && ( ! ini_get( 'opcache.restrict_api' ) 2529 || stripos( realpath( $_SERVER['SCRIPT_FILENAME'] ), ini_get( 'opcache.restrict_api' ) ) === 0 ) 2530 ) { 2531 $can_invalidate = true; 2532 } 2533 2534 // If invalidation is not available, return early. 2535 if ( ! $can_invalidate ) { 2536 return false; 2537 } 2538 2539 // Verify that file to be invalidated has a PHP extension. 2540 if ( '.php' !== strtolower( substr( $filepath, -4 ) ) ) { 2541 return false; 2542 } 2543 2544 /** 2545 * Filters whether to invalidate a file from the opcode cache. 2546 * 2547 * @since 5.5.0 2548 * 2549 * @param bool $will_invalidate Whether WordPress will invalidate `$filepath`. Default true. 2550 * @param string $filepath The path to the PHP file to invalidate. 2551 */ 2552 if ( apply_filters( 'wp_opcache_invalidate_file', true, $filepath ) ) { 2553 return opcache_invalidate( $filepath, $force ); 2554 } 2555 2556 return false; 2557 }
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| Generated: Tue Jun 28 01:00:03 2022 | Cross-referenced by PHPXref 0.7.1 |