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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 current 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, can’t 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 if ( rename( $tmpfname, $tmpfname_disposition ) ) { 1202 $tmpfname = $tmpfname_disposition; 1203 } 1204 1205 if ( ( $tmpfname !== $tmpfname_disposition ) && file_exists( $tmpfname_disposition ) ) { 1206 unlink( $tmpfname_disposition ); 1207 } 1208 } 1209 } 1210 1211 $content_md5 = wp_remote_retrieve_header( $response, 'content-md5' ); 1212 1213 if ( $content_md5 ) { 1214 $md5_check = verify_file_md5( $tmpfname, $content_md5 ); 1215 1216 if ( is_wp_error( $md5_check ) ) { 1217 unlink( $tmpfname ); 1218 return $md5_check; 1219 } 1220 } 1221 1222 // If the caller expects signature verification to occur, check to see if this URL supports it. 1223 if ( $signature_verification ) { 1224 /** 1225 * Filters the list of hosts which should have Signature Verification attempted on. 1226 * 1227 * @since 5.2.0 1228 * 1229 * @param string[] $hostnames List of hostnames. 1230 */ 1231 $signed_hostnames = apply_filters( 'wp_signature_hosts', array( 'wordpress.org', 'downloads.wordpress.org', 's.w.org' ) ); 1232 1233 $signature_verification = in_array( parse_url( $url, PHP_URL_HOST ), $signed_hostnames, true ); 1234 } 1235 1236 // Perform signature valiation if supported. 1237 if ( $signature_verification ) { 1238 $signature = wp_remote_retrieve_header( $response, 'x-content-signature' ); 1239 1240 if ( ! $signature ) { 1241 // Retrieve signatures from a file if the header wasn't included. 1242 // WordPress.org stores signatures at $package_url.sig. 1243 1244 $signature_url = false; 1245 1246 if ( is_string( $url_path ) && ( '.zip' === substr( $url_path, -4 ) || '.tar.gz' === substr( $url_path, -7 ) ) ) { 1247 $signature_url = str_replace( $url_path, $url_path . '.sig', $url ); 1248 } 1249 1250 /** 1251 * Filters the URL where the signature for a file is located. 1252 * 1253 * @since 5.2.0 1254 * 1255 * @param false|string $signature_url The URL where signatures can be found for a file, or false if none are known. 1256 * @param string $url The URL being verified. 1257 */ 1258 $signature_url = apply_filters( 'wp_signature_url', $signature_url, $url ); 1259 1260 if ( $signature_url ) { 1261 $signature_request = wp_safe_remote_get( 1262 $signature_url, 1263 array( 1264 'limit_response_size' => 10 * KB_IN_BYTES, // 10KB should be large enough for quite a few signatures. 1265 ) 1266 ); 1267 1268 if ( ! is_wp_error( $signature_request ) && 200 === wp_remote_retrieve_response_code( $signature_request ) ) { 1269 $signature = explode( "\n", wp_remote_retrieve_body( $signature_request ) ); 1270 } 1271 } 1272 } 1273 1274 // Perform the checks. 1275 $signature_verification = verify_file_signature( $tmpfname, $signature, $url_filename ); 1276 } 1277 1278 if ( is_wp_error( $signature_verification ) ) { 1279 if ( 1280 /** 1281 * Filters whether Signature Verification failures should be allowed to soft fail. 1282 * 1283 * WARNING: This may be removed from a future release. 1284 * 1285 * @since 5.2.0 1286 * 1287 * @param bool $signature_softfail If a softfail is allowed. 1288 * @param string $url The url being accessed. 1289 */ 1290 apply_filters( 'wp_signature_softfail', true, $url ) 1291 ) { 1292 $signature_verification->add_data( $tmpfname, 'softfail-filename' ); 1293 } else { 1294 // Hard-fail. 1295 unlink( $tmpfname ); 1296 } 1297 1298 return $signature_verification; 1299 } 1300 1301 return $tmpfname; 1302 } 1303 1304 /** 1305 * Calculates and compares the MD5 of a file to its expected value. 1306 * 1307 * @since 3.7.0 1308 * 1309 * @param string $filename The filename to check the MD5 of. 1310 * @param string $expected_md5 The expected MD5 of the file, either a base64-encoded raw md5, 1311 * or a hex-encoded md5. 1312 * @return bool|WP_Error True on success, false when the MD5 format is unknown/unexpected, 1313 * WP_Error on failure. 1314 */ 1315 function verify_file_md5( $filename, $expected_md5 ) { 1316 if ( 32 === strlen( $expected_md5 ) ) { 1317 $expected_raw_md5 = pack( 'H*', $expected_md5 ); 1318 } elseif ( 24 === strlen( $expected_md5 ) ) { 1319 $expected_raw_md5 = base64_decode( $expected_md5 ); 1320 } else { 1321 return false; // Unknown format. 1322 } 1323 1324 $file_md5 = md5_file( $filename, true ); 1325 1326 if ( $file_md5 === $expected_raw_md5 ) { 1327 return true; 1328 } 1329 1330 return new WP_Error( 1331 'md5_mismatch', 1332 sprintf( 1333 /* translators: 1: File checksum, 2: Expected checksum value. */ 1334 __( 'The checksum of the file (%1$s) does not match the expected checksum value (%2$s).' ), 1335 bin2hex( $file_md5 ), 1336 bin2hex( $expected_raw_md5 ) 1337 ) 1338 ); 1339 } 1340 1341 /** 1342 * Verifies the contents of a file against its ED25519 signature. 1343 * 1344 * @since 5.2.0 1345 * 1346 * @param string $filename The file to validate. 1347 * @param string|array $signatures A Signature provided for the file. 1348 * @param string|false $filename_for_errors Optional. A friendly filename for errors. 1349 * @return bool|WP_Error True on success, false if verification not attempted, 1350 * or WP_Error describing an error condition. 1351 */ 1352 function verify_file_signature( $filename, $signatures, $filename_for_errors = false ) { 1353 if ( ! $filename_for_errors ) { 1354 $filename_for_errors = wp_basename( $filename ); 1355 } 1356 1357 // Check we can process signatures. 1358 if ( ! function_exists( 'sodium_crypto_sign_verify_detached' ) || ! in_array( 'sha384', array_map( 'strtolower', hash_algos() ), true ) ) { 1359 return new WP_Error( 1360 'signature_verification_unsupported', 1361 sprintf( 1362 /* translators: %s: The filename of the package. */ 1363 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1364 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1365 ), 1366 ( ! function_exists( 'sodium_crypto_sign_verify_detached' ) ? 'sodium_crypto_sign_verify_detached' : 'sha384' ) 1367 ); 1368 } 1369 1370 // Check for a edge-case affecting PHP Maths abilities. 1371 if ( 1372 ! extension_loaded( 'sodium' ) && 1373 in_array( PHP_VERSION_ID, array( 70200, 70201, 70202 ), true ) && 1374 extension_loaded( 'opcache' ) 1375 ) { 1376 // 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. 1377 // https://bugs.php.net/bug.php?id=75938 1378 return new WP_Error( 1379 'signature_verification_unsupported', 1380 sprintf( 1381 /* translators: %s: The filename of the package. */ 1382 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1383 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1384 ), 1385 array( 1386 'php' => phpversion(), 1387 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1388 ) 1389 ); 1390 } 1391 1392 // Verify runtime speed of Sodium_Compat is acceptable. 1393 if ( ! extension_loaded( 'sodium' ) && ! ParagonIE_Sodium_Compat::polyfill_is_fast() ) { 1394 $sodium_compat_is_fast = false; 1395 1396 // Allow for an old version of Sodium_Compat being loaded before the bundled WordPress one. 1397 if ( method_exists( 'ParagonIE_Sodium_Compat', 'runtime_speed_test' ) ) { 1398 // Run `ParagonIE_Sodium_Compat::runtime_speed_test()` in optimized integer mode, as that's what WordPress utilises during signing verifications. 1399 // phpcs:disable WordPress.NamingConventions.ValidVariableName 1400 $old_fastMult = ParagonIE_Sodium_Compat::$fastMult; 1401 ParagonIE_Sodium_Compat::$fastMult = true; 1402 $sodium_compat_is_fast = ParagonIE_Sodium_Compat::runtime_speed_test( 100, 10 ); 1403 ParagonIE_Sodium_Compat::$fastMult = $old_fastMult; 1404 // phpcs:enable 1405 } 1406 1407 // This cannot be performed in a reasonable amount of time. 1408 // https://github.com/paragonie/sodium_compat#help-sodium_compat-is-slow-how-can-i-make-it-fast 1409 if ( ! $sodium_compat_is_fast ) { 1410 return new WP_Error( 1411 'signature_verification_unsupported', 1412 sprintf( 1413 /* translators: %s: The filename of the package. */ 1414 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1415 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1416 ), 1417 array( 1418 'php' => phpversion(), 1419 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1420 'polyfill_is_fast' => false, 1421 'max_execution_time' => ini_get( 'max_execution_time' ), 1422 ) 1423 ); 1424 } 1425 } 1426 1427 if ( ! $signatures ) { 1428 return new WP_Error( 1429 'signature_verification_no_signature', 1430 sprintf( 1431 /* translators: %s: The filename of the package. */ 1432 __( 'The authenticity of %s could not be verified as no signature was found.' ), 1433 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1434 ), 1435 array( 1436 'filename' => $filename_for_errors, 1437 ) 1438 ); 1439 } 1440 1441 $trusted_keys = wp_trusted_keys(); 1442 $file_hash = hash_file( 'sha384', $filename, true ); 1443 1444 mbstring_binary_safe_encoding(); 1445 1446 $skipped_key = 0; 1447 $skipped_signature = 0; 1448 1449 foreach ( (array) $signatures as $signature ) { 1450 $signature_raw = base64_decode( $signature ); 1451 1452 // Ensure only valid-length signatures are considered. 1453 if ( SODIUM_CRYPTO_SIGN_BYTES !== strlen( $signature_raw ) ) { 1454 $skipped_signature++; 1455 continue; 1456 } 1457 1458 foreach ( (array) $trusted_keys as $key ) { 1459 $key_raw = base64_decode( $key ); 1460 1461 // Only pass valid public keys through. 1462 if ( SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES !== strlen( $key_raw ) ) { 1463 $skipped_key++; 1464 continue; 1465 } 1466 1467 if ( sodium_crypto_sign_verify_detached( $signature_raw, $file_hash, $key_raw ) ) { 1468 reset_mbstring_encoding(); 1469 return true; 1470 } 1471 } 1472 } 1473 1474 reset_mbstring_encoding(); 1475 1476 return new WP_Error( 1477 'signature_verification_failed', 1478 sprintf( 1479 /* translators: %s: The filename of the package. */ 1480 __( 'The authenticity of %s could not be verified.' ), 1481 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1482 ), 1483 // Error data helpful for debugging: 1484 array( 1485 'filename' => $filename_for_errors, 1486 'keys' => $trusted_keys, 1487 'signatures' => $signatures, 1488 'hash' => bin2hex( $file_hash ), 1489 'skipped_key' => $skipped_key, 1490 'skipped_sig' => $skipped_signature, 1491 'php' => phpversion(), 1492 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1493 ) 1494 ); 1495 } 1496 1497 /** 1498 * Retrieves the list of signing keys trusted by WordPress. 1499 * 1500 * @since 5.2.0 1501 * 1502 * @return string[] Array of base64-encoded signing keys. 1503 */ 1504 function wp_trusted_keys() { 1505 $trusted_keys = array(); 1506 1507 if ( time() < 1617235200 ) { 1508 // WordPress.org Key #1 - This key is only valid before April 1st, 2021. 1509 $trusted_keys[] = 'fRPyrxb/MvVLbdsYi+OOEv4xc+Eqpsj+kkAS6gNOkI0='; 1510 } 1511 1512 // TODO: Add key #2 with longer expiration. 1513 1514 /** 1515 * Filters the valid signing keys used to verify the contents of files. 1516 * 1517 * @since 5.2.0 1518 * 1519 * @param string[] $trusted_keys The trusted keys that may sign packages. 1520 */ 1521 return apply_filters( 'wp_trusted_keys', $trusted_keys ); 1522 } 1523 1524 /** 1525 * Unzips a specified ZIP file to a location on the filesystem via the WordPress 1526 * Filesystem Abstraction. 1527 * 1528 * Assumes that WP_Filesystem() has already been called and set up. Does not extract 1529 * a root-level __MACOSX directory, if present. 1530 * 1531 * Attempts to increase the PHP memory limit to 256M before uncompressing. However, 1532 * the most memory required shouldn't be much larger than the archive itself. 1533 * 1534 * @since 2.5.0 1535 * 1536 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1537 * 1538 * @param string $file Full path and filename of ZIP archive. 1539 * @param string $to Full path on the filesystem to extract archive to. 1540 * @return true|WP_Error True on success, WP_Error on failure. 1541 */ 1542 function unzip_file( $file, $to ) { 1543 global $wp_filesystem; 1544 1545 if ( ! $wp_filesystem || ! is_object( $wp_filesystem ) ) { 1546 return new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) ); 1547 } 1548 1549 // Unzip can use a lot of memory, but not this much hopefully. 1550 wp_raise_memory_limit( 'admin' ); 1551 1552 $needed_dirs = array(); 1553 $to = trailingslashit( $to ); 1554 1555 // Determine any parent directories needed (of the upgrade directory). 1556 if ( ! $wp_filesystem->is_dir( $to ) ) { // Only do parents if no children exist. 1557 $path = preg_split( '![/\\\]!', untrailingslashit( $to ) ); 1558 for ( $i = count( $path ); $i >= 0; $i-- ) { 1559 if ( empty( $path[ $i ] ) ) { 1560 continue; 1561 } 1562 1563 $dir = implode( '/', array_slice( $path, 0, $i + 1 ) ); 1564 if ( preg_match( '!^[a-z]:$!i', $dir ) ) { // Skip it if it looks like a Windows Drive letter. 1565 continue; 1566 } 1567 1568 if ( ! $wp_filesystem->is_dir( $dir ) ) { 1569 $needed_dirs[] = $dir; 1570 } else { 1571 break; // A folder exists, therefore we don't need to check the levels below this. 1572 } 1573 } 1574 } 1575 1576 /** 1577 * Filters whether to use ZipArchive to unzip archives. 1578 * 1579 * @since 3.0.0 1580 * 1581 * @param bool $ziparchive Whether to use ZipArchive. Default true. 1582 */ 1583 if ( class_exists( 'ZipArchive', false ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) { 1584 $result = _unzip_file_ziparchive( $file, $to, $needed_dirs ); 1585 if ( true === $result ) { 1586 return $result; 1587 } elseif ( is_wp_error( $result ) ) { 1588 if ( 'incompatible_archive' !== $result->get_error_code() ) { 1589 return $result; 1590 } 1591 } 1592 } 1593 // Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file. 1594 return _unzip_file_pclzip( $file, $to, $needed_dirs ); 1595 } 1596 1597 /** 1598 * Attempts to unzip an archive using the ZipArchive class. 1599 * 1600 * This function should not be called directly, use `unzip_file()` instead. 1601 * 1602 * Assumes that WP_Filesystem() has already been called and set up. 1603 * 1604 * @since 3.0.0 1605 * @access private 1606 * 1607 * @see unzip_file() 1608 * 1609 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1610 * 1611 * @param string $file Full path and filename of ZIP archive. 1612 * @param string $to Full path on the filesystem to extract archive to. 1613 * @param string[] $needed_dirs A partial list of required folders needed to be created. 1614 * @return true|WP_Error True on success, WP_Error on failure. 1615 */ 1616 function _unzip_file_ziparchive( $file, $to, $needed_dirs = array() ) { 1617 global $wp_filesystem; 1618 1619 $z = new ZipArchive(); 1620 1621 $zopen = $z->open( $file, ZIPARCHIVE::CHECKCONS ); 1622 1623 if ( true !== $zopen ) { 1624 return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), array( 'ziparchive_error' => $zopen ) ); 1625 } 1626 1627 $uncompressed_size = 0; 1628 1629 for ( $i = 0; $i < $z->numFiles; $i++ ) { 1630 $info = $z->statIndex( $i ); 1631 1632 if ( ! $info ) { 1633 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) ); 1634 } 1635 1636 if ( '__MACOSX/' === substr( $info['name'], 0, 9 ) ) { // Skip the OS X-created __MACOSX directory. 1637 continue; 1638 } 1639 1640 // Don't extract invalid files: 1641 if ( 0 !== validate_file( $info['name'] ) ) { 1642 continue; 1643 } 1644 1645 $uncompressed_size += $info['size']; 1646 1647 $dirname = dirname( $info['name'] ); 1648 1649 if ( '/' === substr( $info['name'], -1 ) ) { 1650 // Directory. 1651 $needed_dirs[] = $to . untrailingslashit( $info['name'] ); 1652 } elseif ( '.' !== $dirname ) { 1653 // Path to a file. 1654 $needed_dirs[] = $to . untrailingslashit( $dirname ); 1655 } 1656 } 1657 1658 /* 1659 * disk_free_space() could return false. Assume that any falsey value is an error. 1660 * A disk that has zero free bytes has bigger problems. 1661 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer. 1662 */ 1663 if ( wp_doing_cron() ) { 1664 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( WP_CONTENT_DIR ) : false; 1665 1666 if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space ) { 1667 return new WP_Error( 1668 'disk_full_unzip_file', 1669 __( 'Could not copy files. You may have run out of disk space.' ), 1670 compact( 'uncompressed_size', 'available_space' ) 1671 ); 1672 } 1673 } 1674 1675 $needed_dirs = array_unique( $needed_dirs ); 1676 1677 foreach ( $needed_dirs as $dir ) { 1678 // Check the parent folders of the folders all exist within the creation array. 1679 if ( untrailingslashit( $to ) === $dir ) { // Skip over the working directory, we know this exists (or will exist). 1680 continue; 1681 } 1682 1683 if ( strpos( $dir, $to ) === false ) { // If the directory is not within the working directory, skip it. 1684 continue; 1685 } 1686 1687 $parent_folder = dirname( $dir ); 1688 1689 while ( ! empty( $parent_folder ) 1690 && untrailingslashit( $to ) !== $parent_folder 1691 && ! in_array( $parent_folder, $needed_dirs, true ) 1692 ) { 1693 $needed_dirs[] = $parent_folder; 1694 $parent_folder = dirname( $parent_folder ); 1695 } 1696 } 1697 1698 asort( $needed_dirs ); 1699 1700 // Create those directories if need be: 1701 foreach ( $needed_dirs as $_dir ) { 1702 // Only check to see if the Dir exists upon creation failure. Less I/O this way. 1703 if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) { 1704 return new WP_Error( 'mkdir_failed_ziparchive', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) ); 1705 } 1706 } 1707 unset( $needed_dirs ); 1708 1709 for ( $i = 0; $i < $z->numFiles; $i++ ) { 1710 $info = $z->statIndex( $i ); 1711 1712 if ( ! $info ) { 1713 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) ); 1714 } 1715 1716 if ( '/' === substr( $info['name'], -1 ) ) { // Directory. 1717 continue; 1718 } 1719 1720 if ( '__MACOSX/' === substr( $info['name'], 0, 9 ) ) { // Don't extract the OS X-created __MACOSX directory files. 1721 continue; 1722 } 1723 1724 // Don't extract invalid files: 1725 if ( 0 !== validate_file( $info['name'] ) ) { 1726 continue; 1727 } 1728 1729 $contents = $z->getFromIndex( $i ); 1730 1731 if ( false === $contents ) { 1732 return new WP_Error( 'extract_failed_ziparchive', __( 'Could not extract file from archive.' ), $info['name'] ); 1733 } 1734 1735 if ( ! $wp_filesystem->put_contents( $to . $info['name'], $contents, FS_CHMOD_FILE ) ) { 1736 return new WP_Error( 'copy_failed_ziparchive', __( 'Could not copy file.' ), $info['name'] ); 1737 } 1738 } 1739 1740 $z->close(); 1741 1742 return true; 1743 } 1744 1745 /** 1746 * Attempts to unzip an archive using the PclZip library. 1747 * 1748 * This function should not be called directly, use `unzip_file()` instead. 1749 * 1750 * Assumes that WP_Filesystem() has already been called and set up. 1751 * 1752 * @since 3.0.0 1753 * @access private 1754 * 1755 * @see unzip_file() 1756 * 1757 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1758 * 1759 * @param string $file Full path and filename of ZIP archive. 1760 * @param string $to Full path on the filesystem to extract archive to. 1761 * @param string[] $needed_dirs A partial list of required folders needed to be created. 1762 * @return true|WP_Error True on success, WP_Error on failure. 1763 */ 1764 function _unzip_file_pclzip( $file, $to, $needed_dirs = array() ) { 1765 global $wp_filesystem; 1766 1767 mbstring_binary_safe_encoding(); 1768 1769 require_once ABSPATH . 'wp-admin/includes/class-pclzip.php'; 1770 1771 $archive = new PclZip( $file ); 1772 1773 $archive_files = $archive->extract( PCLZIP_OPT_EXTRACT_AS_STRING ); 1774 1775 reset_mbstring_encoding(); 1776 1777 // Is the archive valid? 1778 if ( ! is_array( $archive_files ) ) { 1779 return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), $archive->errorInfo( true ) ); 1780 } 1781 1782 if ( 0 === count( $archive_files ) ) { 1783 return new WP_Error( 'empty_archive_pclzip', __( 'Empty archive.' ) ); 1784 } 1785 1786 $uncompressed_size = 0; 1787 1788 // Determine any children directories needed (From within the archive). 1789 foreach ( $archive_files as $file ) { 1790 if ( '__MACOSX/' === substr( $file['filename'], 0, 9 ) ) { // Skip the OS X-created __MACOSX directory. 1791 continue; 1792 } 1793 1794 $uncompressed_size += $file['size']; 1795 1796 $needed_dirs[] = $to . untrailingslashit( $file['folder'] ? $file['filename'] : dirname( $file['filename'] ) ); 1797 } 1798 1799 /* 1800 * disk_free_space() could return false. Assume that any falsey value is an error. 1801 * A disk that has zero free bytes has bigger problems. 1802 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer. 1803 */ 1804 if ( wp_doing_cron() ) { 1805 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( WP_CONTENT_DIR ) : false; 1806 1807 if ( $available_space && ( $uncompressed_size * 2.1 ) > $available_space ) { 1808 return new WP_Error( 1809 'disk_full_unzip_file', 1810 __( 'Could not copy files. You may have run out of disk space.' ), 1811 compact( 'uncompressed_size', 'available_space' ) 1812 ); 1813 } 1814 } 1815 1816 $needed_dirs = array_unique( $needed_dirs ); 1817 1818 foreach ( $needed_dirs as $dir ) { 1819 // Check the parent folders of the folders all exist within the creation array. 1820 if ( untrailingslashit( $to ) === $dir ) { // Skip over the working directory, we know this exists (or will exist). 1821 continue; 1822 } 1823 1824 if ( strpos( $dir, $to ) === false ) { // If the directory is not within the working directory, skip it. 1825 continue; 1826 } 1827 1828 $parent_folder = dirname( $dir ); 1829 1830 while ( ! empty( $parent_folder ) 1831 && untrailingslashit( $to ) !== $parent_folder 1832 && ! in_array( $parent_folder, $needed_dirs, true ) 1833 ) { 1834 $needed_dirs[] = $parent_folder; 1835 $parent_folder = dirname( $parent_folder ); 1836 } 1837 } 1838 1839 asort( $needed_dirs ); 1840 1841 // Create those directories if need be: 1842 foreach ( $needed_dirs as $_dir ) { 1843 // Only check to see if the dir exists upon creation failure. Less I/O this way. 1844 if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) { 1845 return new WP_Error( 'mkdir_failed_pclzip', __( 'Could not create directory.' ), substr( $_dir, strlen( $to ) ) ); 1846 } 1847 } 1848 unset( $needed_dirs ); 1849 1850 // Extract the files from the zip. 1851 foreach ( $archive_files as $file ) { 1852 if ( $file['folder'] ) { 1853 continue; 1854 } 1855 1856 if ( '__MACOSX/' === substr( $file['filename'], 0, 9 ) ) { // Don't extract the OS X-created __MACOSX directory files. 1857 continue; 1858 } 1859 1860 // Don't extract invalid files: 1861 if ( 0 !== validate_file( $file['filename'] ) ) { 1862 continue; 1863 } 1864 1865 if ( ! $wp_filesystem->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE ) ) { 1866 return new WP_Error( 'copy_failed_pclzip', __( 'Could not copy file.' ), $file['filename'] ); 1867 } 1868 } 1869 1870 return true; 1871 } 1872 1873 /** 1874 * Copies a directory from one location to another via the WordPress Filesystem 1875 * Abstraction. 1876 * 1877 * Assumes that WP_Filesystem() has already been called and setup. 1878 * 1879 * @since 2.5.0 1880 * 1881 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1882 * 1883 * @param string $from Source directory. 1884 * @param string $to Destination directory. 1885 * @param string[] $skip_list An array of files/folders to skip copying. 1886 * @return true|WP_Error True on success, WP_Error on failure. 1887 */ 1888 function copy_dir( $from, $to, $skip_list = array() ) { 1889 global $wp_filesystem; 1890 1891 $dirlist = $wp_filesystem->dirlist( $from ); 1892 1893 if ( false === $dirlist ) { 1894 return new WP_Error( 'dirlist_failed_copy_dir', __( 'Directory listing failed.' ), basename( $to ) ); 1895 } 1896 1897 $from = trailingslashit( $from ); 1898 $to = trailingslashit( $to ); 1899 1900 foreach ( (array) $dirlist as $filename => $fileinfo ) { 1901 if ( in_array( $filename, $skip_list, true ) ) { 1902 continue; 1903 } 1904 1905 if ( 'f' === $fileinfo['type'] ) { 1906 if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { 1907 // If copy failed, chmod file to 0644 and try again. 1908 $wp_filesystem->chmod( $to . $filename, FS_CHMOD_FILE ); 1909 1910 if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { 1911 return new WP_Error( 'copy_failed_copy_dir', __( 'Could not copy file.' ), $to . $filename ); 1912 } 1913 } 1914 1915 wp_opcache_invalidate( $to . $filename ); 1916 } elseif ( 'd' === $fileinfo['type'] ) { 1917 if ( ! $wp_filesystem->is_dir( $to . $filename ) ) { 1918 if ( ! $wp_filesystem->mkdir( $to . $filename, FS_CHMOD_DIR ) ) { 1919 return new WP_Error( 'mkdir_failed_copy_dir', __( 'Could not create directory.' ), $to . $filename ); 1920 } 1921 } 1922 1923 // Generate the $sub_skip_list for the subdirectory as a sub-set of the existing $skip_list. 1924 $sub_skip_list = array(); 1925 1926 foreach ( $skip_list as $skip_item ) { 1927 if ( 0 === strpos( $skip_item, $filename . '/' ) ) { 1928 $sub_skip_list[] = preg_replace( '!^' . preg_quote( $filename, '!' ) . '/!i', '', $skip_item ); 1929 } 1930 } 1931 1932 $result = copy_dir( $from . $filename, $to . $filename, $sub_skip_list ); 1933 1934 if ( is_wp_error( $result ) ) { 1935 return $result; 1936 } 1937 } 1938 } 1939 1940 return true; 1941 } 1942 1943 /** 1944 * Initializes and connects the WordPress Filesystem Abstraction classes. 1945 * 1946 * This function will include the chosen transport and attempt connecting. 1947 * 1948 * Plugins may add extra transports, And force WordPress to use them by returning 1949 * the filename via the {@see 'filesystem_method_file'} filter. 1950 * 1951 * @since 2.5.0 1952 * 1953 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1954 * 1955 * @param array|false $args Optional. Connection args, These are passed 1956 * directly to the `WP_Filesystem_*()` classes. 1957 * Default false. 1958 * @param string|false $context Optional. Context for get_filesystem_method(). 1959 * Default false. 1960 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 1961 * Default false. 1962 * @return bool|null True on success, false on failure, 1963 * null if the filesystem method class file does not exist. 1964 */ 1965 function WP_Filesystem( $args = false, $context = false, $allow_relaxed_file_ownership = false ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid 1966 global $wp_filesystem; 1967 1968 require_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'; 1969 1970 $method = get_filesystem_method( $args, $context, $allow_relaxed_file_ownership ); 1971 1972 if ( ! $method ) { 1973 return false; 1974 } 1975 1976 if ( ! class_exists( "WP_Filesystem_$method" ) ) { 1977 1978 /** 1979 * Filters the path for a specific filesystem method class file. 1980 * 1981 * @since 2.6.0 1982 * 1983 * @see get_filesystem_method() 1984 * 1985 * @param string $path Path to the specific filesystem method class file. 1986 * @param string $method The filesystem method to use. 1987 */ 1988 $abstraction_file = apply_filters( 'filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method ); 1989 1990 if ( ! file_exists( $abstraction_file ) ) { 1991 return; 1992 } 1993 1994 require_once $abstraction_file; 1995 } 1996 $method = "WP_Filesystem_$method"; 1997 1998 $wp_filesystem = new $method( $args ); 1999 2000 /* 2001 * Define the timeouts for the connections. Only available after the constructor is called 2002 * to allow for per-transport overriding of the default. 2003 */ 2004 if ( ! defined( 'FS_CONNECT_TIMEOUT' ) ) { 2005 define( 'FS_CONNECT_TIMEOUT', 30 ); 2006 } 2007 if ( ! defined( 'FS_TIMEOUT' ) ) { 2008 define( 'FS_TIMEOUT', 30 ); 2009 } 2010 2011 if ( is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) { 2012 return false; 2013 } 2014 2015 if ( ! $wp_filesystem->connect() ) { 2016 return false; // There was an error connecting to the server. 2017 } 2018 2019 // Set the permission constants if not already set. 2020 if ( ! defined( 'FS_CHMOD_DIR' ) ) { 2021 define( 'FS_CHMOD_DIR', ( fileperms( ABSPATH ) & 0777 | 0755 ) ); 2022 } 2023 if ( ! defined( 'FS_CHMOD_FILE' ) ) { 2024 define( 'FS_CHMOD_FILE', ( fileperms( ABSPATH . 'index.php' ) & 0777 | 0644 ) ); 2025 } 2026 2027 return true; 2028 } 2029 2030 /** 2031 * Determines which method to use for reading, writing, modifying, or deleting 2032 * files on the filesystem. 2033 * 2034 * The priority of the transports are: Direct, SSH2, FTP PHP Extension, FTP Sockets 2035 * (Via Sockets class, or `fsockopen()`). Valid values for these are: 'direct', 'ssh2', 2036 * 'ftpext' or 'ftpsockets'. 2037 * 2038 * The return value can be overridden by defining the `FS_METHOD` constant in `wp-config.php`, 2039 * or filtering via {@see 'filesystem_method'}. 2040 * 2041 * @link https://wordpress.org/support/article/editing-wp-config-php/#wordpress-upgrade-constants 2042 * 2043 * Plugins may define a custom transport handler, See WP_Filesystem(). 2044 * 2045 * @since 2.5.0 2046 * 2047 * @global callable $_wp_filesystem_direct_method 2048 * 2049 * @param array $args Optional. Connection details. Default empty array. 2050 * @param string $context Optional. Full path to the directory that is tested 2051 * for being writable. Default empty. 2052 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 2053 * Default false. 2054 * @return string The transport to use, see description for valid return values. 2055 */ 2056 function get_filesystem_method( $args = array(), $context = '', $allow_relaxed_file_ownership = false ) { 2057 // Please ensure that this is either 'direct', 'ssh2', 'ftpext', or 'ftpsockets'. 2058 $method = defined( 'FS_METHOD' ) ? FS_METHOD : false; 2059 2060 if ( ! $context ) { 2061 $context = WP_CONTENT_DIR; 2062 } 2063 2064 // If the directory doesn't exist (wp-content/languages) then use the parent directory as we'll create it. 2065 if ( WP_LANG_DIR === $context && ! is_dir( $context ) ) { 2066 $context = dirname( $context ); 2067 } 2068 2069 $context = trailingslashit( $context ); 2070 2071 if ( ! $method ) { 2072 2073 $temp_file_name = $context . 'temp-write-test-' . str_replace( '.', '-', uniqid( '', true ) ); 2074 $temp_handle = @fopen( $temp_file_name, 'w' ); 2075 if ( $temp_handle ) { 2076 2077 // Attempt to determine the file owner of the WordPress files, and that of newly created files. 2078 $wp_file_owner = false; 2079 $temp_file_owner = false; 2080 if ( function_exists( 'fileowner' ) ) { 2081 $wp_file_owner = @fileowner( __FILE__ ); 2082 $temp_file_owner = @fileowner( $temp_file_name ); 2083 } 2084 2085 if ( false !== $wp_file_owner && $wp_file_owner === $temp_file_owner ) { 2086 /* 2087 * WordPress is creating files as the same owner as the WordPress files, 2088 * this means it's safe to modify & create new files via PHP. 2089 */ 2090 $method = 'direct'; 2091 $GLOBALS['_wp_filesystem_direct_method'] = 'file_owner'; 2092 } elseif ( $allow_relaxed_file_ownership ) { 2093 /* 2094 * The $context directory is writable, and $allow_relaxed_file_ownership is set, 2095 * this means we can modify files safely in this directory. 2096 * This mode doesn't create new files, only alter existing ones. 2097 */ 2098 $method = 'direct'; 2099 $GLOBALS['_wp_filesystem_direct_method'] = 'relaxed_ownership'; 2100 } 2101 2102 fclose( $temp_handle ); 2103 @unlink( $temp_file_name ); 2104 } 2105 } 2106 2107 if ( ! $method && isset( $args['connection_type'] ) && 'ssh' === $args['connection_type'] && extension_loaded( 'ssh2' ) ) { 2108 $method = 'ssh2'; 2109 } 2110 if ( ! $method && extension_loaded( 'ftp' ) ) { 2111 $method = 'ftpext'; 2112 } 2113 if ( ! $method && ( extension_loaded( 'sockets' ) || function_exists( 'fsockopen' ) ) ) { 2114 $method = 'ftpsockets'; // Sockets: Socket extension; PHP Mode: FSockopen / fwrite / fread. 2115 } 2116 2117 /** 2118 * Filters the filesystem method to use. 2119 * 2120 * @since 2.6.0 2121 * 2122 * @param string $method Filesystem method to return. 2123 * @param array $args An array of connection details for the method. 2124 * @param string $context Full path to the directory that is tested for being writable. 2125 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable. 2126 */ 2127 return apply_filters( 'filesystem_method', $method, $args, $context, $allow_relaxed_file_ownership ); 2128 } 2129 2130 /** 2131 * Displays a form to the user to request for their FTP/SSH details in order 2132 * to connect to the filesystem. 2133 * 2134 * All chosen/entered details are saved, excluding the password. 2135 * 2136 * Hostnames may be in the form of hostname:portnumber (eg: wordpress.org:2467) 2137 * to specify an alternate FTP/SSH port. 2138 * 2139 * Plugins may override this form by returning true|false via the {@see 'request_filesystem_credentials'} filter. 2140 * 2141 * @since 2.5.0 2142 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2143 * 2144 * @global string $pagenow 2145 * 2146 * @param string $form_post The URL to post the form to. 2147 * @param string $type Optional. Chosen type of filesystem. Default empty. 2148 * @param bool|WP_Error $error Optional. Whether the current request has failed 2149 * to connect, or an error object. Default false. 2150 * @param string $context Optional. Full path to the directory that is tested 2151 * for being writable. Default empty. 2152 * @param array $extra_fields Optional. Extra `POST` fields to be checked 2153 * for inclusion in the post. Default null. 2154 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 2155 * Default false. 2156 * @return bool|array True if no filesystem credentials are required, 2157 * false if they are required but have not been provided, 2158 * array of credentials if they are required and have been provided. 2159 */ 2160 function request_filesystem_credentials( $form_post, $type = '', $error = false, $context = '', $extra_fields = null, $allow_relaxed_file_ownership = false ) { 2161 global $pagenow; 2162 2163 /** 2164 * Filters the filesystem credentials. 2165 * 2166 * Returning anything other than an empty string will effectively short-circuit 2167 * output of the filesystem credentials form, returning that value instead. 2168 * 2169 * A filter should return true if no filesystem credentials are required, false if they are required but have not been 2170 * provided, or an array of credentials if they are required and have been provided. 2171 * 2172 * @since 2.5.0 2173 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2174 * 2175 * @param mixed $credentials Credentials to return instead. Default empty string. 2176 * @param string $form_post The URL to post the form to. 2177 * @param string $type Chosen type of filesystem. 2178 * @param bool|WP_Error $error Whether the current request has failed to connect, 2179 * or an error object. 2180 * @param string $context Full path to the directory that is tested for 2181 * being writable. 2182 * @param array $extra_fields Extra POST fields. 2183 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable. 2184 */ 2185 $req_cred = apply_filters( 'request_filesystem_credentials', '', $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership ); 2186 2187 if ( '' !== $req_cred ) { 2188 return $req_cred; 2189 } 2190 2191 if ( empty( $type ) ) { 2192 $type = get_filesystem_method( array(), $context, $allow_relaxed_file_ownership ); 2193 } 2194 2195 if ( 'direct' === $type ) { 2196 return true; 2197 } 2198 2199 if ( is_null( $extra_fields ) ) { 2200 $extra_fields = array( 'version', 'locale' ); 2201 } 2202 2203 $credentials = get_option( 2204 'ftp_credentials', 2205 array( 2206 'hostname' => '', 2207 'username' => '', 2208 ) 2209 ); 2210 2211 $submitted_form = wp_unslash( $_POST ); 2212 2213 // Verify nonce, or unset submitted form field values on failure. 2214 if ( ! isset( $_POST['_fs_nonce'] ) || ! wp_verify_nonce( $_POST['_fs_nonce'], 'filesystem-credentials' ) ) { 2215 unset( 2216 $submitted_form['hostname'], 2217 $submitted_form['username'], 2218 $submitted_form['password'], 2219 $submitted_form['public_key'], 2220 $submitted_form['private_key'], 2221 $submitted_form['connection_type'] 2222 ); 2223 } 2224 2225 $ftp_constants = array( 2226 'hostname' => 'FTP_HOST', 2227 'username' => 'FTP_USER', 2228 'password' => 'FTP_PASS', 2229 'public_key' => 'FTP_PUBKEY', 2230 'private_key' => 'FTP_PRIKEY', 2231 ); 2232 2233 // If defined, set it to that. Else, if POST'd, set it to that. If not, set it to an empty string. 2234 // Otherwise, keep it as it previously was (saved details in option). 2235 foreach ( $ftp_constants as $key => $constant ) { 2236 if ( defined( $constant ) ) { 2237 $credentials[ $key ] = constant( $constant ); 2238 } elseif ( ! empty( $submitted_form[ $key ] ) ) { 2239 $credentials[ $key ] = $submitted_form[ $key ]; 2240 } elseif ( ! isset( $credentials[ $key ] ) ) { 2241 $credentials[ $key ] = ''; 2242 } 2243 } 2244 2245 // Sanitize the hostname, some people might pass in odd data. 2246 $credentials['hostname'] = preg_replace( '|\w+://|', '', $credentials['hostname'] ); // Strip any schemes off. 2247 2248 if ( strpos( $credentials['hostname'], ':' ) ) { 2249 list( $credentials['hostname'], $credentials['port'] ) = explode( ':', $credentials['hostname'], 2 ); 2250 if ( ! is_numeric( $credentials['port'] ) ) { 2251 unset( $credentials['port'] ); 2252 } 2253 } else { 2254 unset( $credentials['port'] ); 2255 } 2256 2257 if ( ( defined( 'FTP_SSH' ) && FTP_SSH ) || ( defined( 'FS_METHOD' ) && 'ssh2' === FS_METHOD ) ) { 2258 $credentials['connection_type'] = 'ssh'; 2259 } elseif ( ( defined( 'FTP_SSL' ) && FTP_SSL ) && 'ftpext' === $type ) { // Only the FTP Extension understands SSL. 2260 $credentials['connection_type'] = 'ftps'; 2261 } elseif ( ! empty( $submitted_form['connection_type'] ) ) { 2262 $credentials['connection_type'] = $submitted_form['connection_type']; 2263 } elseif ( ! isset( $credentials['connection_type'] ) ) { // All else fails (and it's not defaulted to something else saved), default to FTP. 2264 $credentials['connection_type'] = 'ftp'; 2265 } 2266 2267 if ( ! $error 2268 && ( ! empty( $credentials['hostname'] ) && ! empty( $credentials['username'] ) && ! empty( $credentials['password'] ) 2269 || 'ssh' === $credentials['connection_type'] && ! empty( $credentials['public_key'] ) && ! empty( $credentials['private_key'] ) 2270 ) 2271 ) { 2272 $stored_credentials = $credentials; 2273 2274 if ( ! empty( $stored_credentials['port'] ) ) { // Save port as part of hostname to simplify above code. 2275 $stored_credentials['hostname'] .= ':' . $stored_credentials['port']; 2276 } 2277 2278 unset( 2279 $stored_credentials['password'], 2280 $stored_credentials['port'], 2281 $stored_credentials['private_key'], 2282 $stored_credentials['public_key'] 2283 ); 2284 2285 if ( ! wp_installing() ) { 2286 update_option( 'ftp_credentials', $stored_credentials ); 2287 } 2288 2289 return $credentials; 2290 } 2291 2292 $hostname = isset( $credentials['hostname'] ) ? $credentials['hostname'] : ''; 2293 $username = isset( $credentials['username'] ) ? $credentials['username'] : ''; 2294 $public_key = isset( $credentials['public_key'] ) ? $credentials['public_key'] : ''; 2295 $private_key = isset( $credentials['private_key'] ) ? $credentials['private_key'] : ''; 2296 $port = isset( $credentials['port'] ) ? $credentials['port'] : ''; 2297 $connection_type = isset( $credentials['connection_type'] ) ? $credentials['connection_type'] : ''; 2298 2299 if ( $error ) { 2300 $error_string = __( '<strong>Error</strong>: Could not connect to the server. Please verify the settings are correct.' ); 2301 if ( is_wp_error( $error ) ) { 2302 $error_string = esc_html( $error->get_error_message() ); 2303 } 2304 echo '<div id="message" class="error"><p>' . $error_string . '</p></div>'; 2305 } 2306 2307 $types = array(); 2308 if ( extension_loaded( 'ftp' ) || extension_loaded( 'sockets' ) || function_exists( 'fsockopen' ) ) { 2309 $types['ftp'] = __( 'FTP' ); 2310 } 2311 if ( extension_loaded( 'ftp' ) ) { // Only this supports FTPS. 2312 $types['ftps'] = __( 'FTPS (SSL)' ); 2313 } 2314 if ( extension_loaded( 'ssh2' ) ) { 2315 $types['ssh'] = __( 'SSH2' ); 2316 } 2317 2318 /** 2319 * Filters the connection types to output to the filesystem credentials form. 2320 * 2321 * @since 2.9.0 2322 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2323 * 2324 * @param string[] $types Types of connections. 2325 * @param array $credentials Credentials to connect with. 2326 * @param string $type Chosen filesystem method. 2327 * @param bool|WP_Error $error Whether the current request has failed to connect, 2328 * or an error object. 2329 * @param string $context Full path to the directory that is tested for being writable. 2330 */ 2331 $types = apply_filters( 'fs_ftp_connection_types', $types, $credentials, $type, $error, $context ); 2332 ?> 2333 <form action="<?php echo esc_url( $form_post ); ?>" method="post"> 2334 <div id="request-filesystem-credentials-form" class="request-filesystem-credentials-form"> 2335 <?php 2336 // Print a H1 heading in the FTP credentials modal dialog, default is a H2. 2337 $heading_tag = 'h2'; 2338 if ( 'plugins.php' === $pagenow || 'plugin-install.php' === $pagenow ) { 2339 $heading_tag = 'h1'; 2340 } 2341 echo "<$heading_tag id='request-filesystem-credentials-title'>" . __( 'Connection Information' ) . "</$heading_tag>"; 2342 ?> 2343 <p id="request-filesystem-credentials-desc"> 2344 <?php 2345 $label_user = __( 'Username' ); 2346 $label_pass = __( 'Password' ); 2347 _e( 'To perform the requested action, WordPress needs to access your web server.' ); 2348 echo ' '; 2349 if ( ( isset( $types['ftp'] ) || isset( $types['ftps'] ) ) ) { 2350 if ( isset( $types['ssh'] ) ) { 2351 _e( 'Please enter your FTP or SSH credentials to proceed.' ); 2352 $label_user = __( 'FTP/SSH Username' ); 2353 $label_pass = __( 'FTP/SSH Password' ); 2354 } else { 2355 _e( 'Please enter your FTP credentials to proceed.' ); 2356 $label_user = __( 'FTP Username' ); 2357 $label_pass = __( 'FTP Password' ); 2358 } 2359 echo ' '; 2360 } 2361 _e( 'If you do not remember your credentials, you should contact your web host.' ); 2362 2363 $hostname_value = esc_attr( $hostname ); 2364 if ( ! empty( $port ) ) { 2365 $hostname_value .= ":$port"; 2366 } 2367 2368 $password_value = ''; 2369 if ( defined( 'FTP_PASS' ) ) { 2370 $password_value = '*****'; 2371 } 2372 ?> 2373 </p> 2374 <label for="hostname"> 2375 <span class="field-title"><?php _e( 'Hostname' ); ?></span> 2376 <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' ) ); ?> /> 2377 </label> 2378 <div class="ftp-username"> 2379 <label for="username"> 2380 <span class="field-title"><?php echo $label_user; ?></span> 2381 <input name="username" type="text" id="username" value="<?php echo esc_attr( $username ); ?>"<?php disabled( defined( 'FTP_USER' ) ); ?> /> 2382 </label> 2383 </div> 2384 <div class="ftp-password"> 2385 <label for="password"> 2386 <span class="field-title"><?php echo $label_pass; ?></span> 2387 <input name="password" type="password" id="password" value="<?php echo $password_value; ?>"<?php disabled( defined( 'FTP_PASS' ) ); ?> /> 2388 <?php 2389 if ( ! defined( 'FTP_PASS' ) ) { 2390 _e( 'This password will not be stored on the server.' );} 2391 ?> 2392 </label> 2393 </div> 2394 <fieldset> 2395 <legend><?php _e( 'Connection Type' ); ?></legend> 2396 <?php 2397 $disabled = disabled( ( defined( 'FTP_SSL' ) && FTP_SSL ) || ( defined( 'FTP_SSH' ) && FTP_SSH ), true, false ); 2398 foreach ( $types as $name => $text ) : 2399 ?> 2400 <label for="<?php echo esc_attr( $name ); ?>"> 2401 <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; ?> /> 2402 <?php echo $text; ?> 2403 </label> 2404 <?php 2405 endforeach; 2406 ?> 2407 </fieldset> 2408 <?php 2409 if ( isset( $types['ssh'] ) ) { 2410 $hidden_class = ''; 2411 if ( 'ssh' !== $connection_type || empty( $connection_type ) ) { 2412 $hidden_class = ' class="hidden"'; 2413 } 2414 ?> 2415 <fieldset id="ssh-keys"<?php echo $hidden_class; ?>> 2416 <legend><?php _e( 'Authentication Keys' ); ?></legend> 2417 <label for="public_key"> 2418 <span class="field-title"><?php _e( 'Public Key:' ); ?></span> 2419 <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' ) ); ?> /> 2420 </label> 2421 <label for="private_key"> 2422 <span class="field-title"><?php _e( 'Private Key:' ); ?></span> 2423 <input name="private_key" type="text" id="private_key" value="<?php echo esc_attr( $private_key ); ?>"<?php disabled( defined( 'FTP_PRIKEY' ) ); ?> /> 2424 </label> 2425 <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> 2426 </fieldset> 2427 <?php 2428 } 2429 2430 foreach ( (array) $extra_fields as $field ) { 2431 if ( isset( $submitted_form[ $field ] ) ) { 2432 echo '<input type="hidden" name="' . esc_attr( $field ) . '" value="' . esc_attr( $submitted_form[ $field ] ) . '" />'; 2433 } 2434 } 2435 2436 // Make sure the `submit_button()` function is available during the REST API call 2437 // from WP_Site_Health_Auto_Updates::test_check_wp_filesystem_method(). 2438 if ( ! function_exists( 'submit_button' ) ) { 2439 require_once ABSPATH . '/wp-admin/includes/template.php'; 2440 } 2441 ?> 2442 <p class="request-filesystem-credentials-action-buttons"> 2443 <?php wp_nonce_field( 'filesystem-credentials', '_fs_nonce', false, true ); ?> 2444 <button class="button cancel-button" data-js-action="close" type="button"><?php _e( 'Cancel' ); ?></button> 2445 <?php submit_button( __( 'Proceed' ), '', 'upgrade', false ); ?> 2446 </p> 2447 </div> 2448 </form> 2449 <?php 2450 return false; 2451 } 2452 2453 /** 2454 * Prints the filesystem credentials modal when needed. 2455 * 2456 * @since 4.2.0 2457 */ 2458 function wp_print_request_filesystem_credentials_modal() { 2459 $filesystem_method = get_filesystem_method(); 2460 2461 ob_start(); 2462 $filesystem_credentials_are_stored = request_filesystem_credentials( self_admin_url() ); 2463 ob_end_clean(); 2464 2465 $request_filesystem_credentials = ( 'direct' !== $filesystem_method && ! $filesystem_credentials_are_stored ); 2466 if ( ! $request_filesystem_credentials ) { 2467 return; 2468 } 2469 ?> 2470 <div id="request-filesystem-credentials-dialog" class="notification-dialog-wrap request-filesystem-credentials-dialog"> 2471 <div class="notification-dialog-background"></div> 2472 <div class="notification-dialog" role="dialog" aria-labelledby="request-filesystem-credentials-title" tabindex="0"> 2473 <div class="request-filesystem-credentials-dialog-content"> 2474 <?php request_filesystem_credentials( site_url() ); ?> 2475 </div> 2476 </div> 2477 </div> 2478 <?php 2479 } 2480 2481 /** 2482 * Attempts to clear the opcode cache for an individual PHP file. 2483 * 2484 * This function can be called safely without having to check the file extension 2485 * or availability of the OPcache extension. 2486 * 2487 * Whether or not invalidation is possible is cached to improve performance. 2488 * 2489 * @since 5.5.0 2490 * 2491 * @link https://www.php.net/manual/en/function.opcache-invalidate.php 2492 * 2493 * @param string $filepath Path to the file, including extension, for which the opcode cache is to be cleared. 2494 * @param bool $force Invalidate even if the modification time is not newer than the file in cache. 2495 * Default false. 2496 * @return bool True if opcache was invalidated for `$filepath`, or there was nothing to invalidate. 2497 * False if opcache invalidation is not available, or is disabled via filter. 2498 */ 2499 function wp_opcache_invalidate( $filepath, $force = false ) { 2500 static $can_invalidate = null; 2501 2502 /* 2503 * Check to see if WordPress is able to run `opcache_invalidate()` or not, and cache the value. 2504 * 2505 * First, check to see if the function is available to call, then if the host has restricted 2506 * the ability to run the function to avoid a PHP warning. 2507 * 2508 * `opcache.restrict_api` can specify the path for files allowed to call `opcache_invalidate()`. 2509 * 2510 * If the host has this set, check whether the path in `opcache.restrict_api` matches 2511 * the beginning of the path of the origin file. 2512 * 2513 * `$_SERVER['SCRIPT_FILENAME']` approximates the origin file's path, but `realpath()` 2514 * is necessary because `SCRIPT_FILENAME` can be a relative path when run from CLI. 2515 * 2516 * For more details, see: 2517 * - https://www.php.net/manual/en/opcache.configuration.php 2518 * - https://www.php.net/manual/en/reserved.variables.server.php 2519 * - https://core.trac.wordpress.org/ticket/36455 2520 */ 2521 if ( null === $can_invalidate 2522 && function_exists( 'opcache_invalidate' ) 2523 && ( ! ini_get( 'opcache.restrict_api' ) 2524 || stripos( realpath( $_SERVER['SCRIPT_FILENAME'] ), ini_get( 'opcache.restrict_api' ) ) === 0 ) 2525 ) { 2526 $can_invalidate = true; 2527 } 2528 2529 // If invalidation is not available, return early. 2530 if ( ! $can_invalidate ) { 2531 return false; 2532 } 2533 2534 // Verify that file to be invalidated has a PHP extension. 2535 if ( '.php' !== strtolower( substr( $filepath, -4 ) ) ) { 2536 return false; 2537 } 2538 2539 /** 2540 * Filters whether to invalidate a file from the opcode cache. 2541 * 2542 * @since 5.5.0 2543 * 2544 * @param bool $will_invalidate Whether WordPress will invalidate `$filepath`. Default true. 2545 * @param string $filepath The path to the PHP file to invalidate. 2546 */ 2547 if ( apply_filters( 'wp_opcache_invalidate_file', true, $filepath ) ) { 2548 return opcache_invalidate( $filepath, $force ); 2549 } 2550 2551 return false; 2552 }
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| Generated: Wed Jan 19 01:00:04 2022 | Cross-referenced by PHPXref 0.7.1 |