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PHP Cross Reference of WordPress Trunk (Updated Daily) |
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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 'theme.json' => __( 'Theme Styles & Block Settings' ), 25 // Archives. 26 'index.php' => __( 'Main Index Template' ), 27 'archive.php' => __( 'Archives' ), 28 'author.php' => __( 'Author Template' ), 29 'taxonomy.php' => __( 'Taxonomy Template' ), 30 'category.php' => __( 'Category Template' ), 31 'tag.php' => __( 'Tag Template' ), 32 'home.php' => __( 'Posts Page' ), 33 'search.php' => __( 'Search Results' ), 34 'date.php' => __( 'Date Template' ), 35 // Content. 36 'singular.php' => __( 'Singular Template' ), 37 'single.php' => __( 'Single Post' ), 38 'page.php' => __( 'Single Page' ), 39 'front-page.php' => __( 'Homepage' ), 40 'privacy-policy.php' => __( 'Privacy Policy Page' ), 41 // Attachments. 42 'attachment.php' => __( 'Attachment Template' ), 43 'image.php' => __( 'Image Attachment Template' ), 44 'video.php' => __( 'Video Attachment Template' ), 45 'audio.php' => __( 'Audio Attachment Template' ), 46 'application.php' => __( 'Application Attachment Template' ), 47 // Embeds. 48 'embed.php' => __( 'Embed Template' ), 49 'embed-404.php' => __( 'Embed 404 Template' ), 50 'embed-content.php' => __( 'Embed Content Template' ), 51 'header-embed.php' => __( 'Embed Header Template' ), 52 'footer-embed.php' => __( 'Embed Footer Template' ), 53 // Stylesheets. 54 'style.css' => __( 'Stylesheet' ), 55 'editor-style.css' => __( 'Visual Editor Stylesheet' ), 56 'editor-style-rtl.css' => __( 'Visual Editor RTL Stylesheet' ), 57 'rtl.css' => __( 'RTL Stylesheet' ), 58 // Other. 59 'my-hacks.php' => __( 'my-hacks.php (legacy hacks support)' ), 60 '.htaccess' => __( '.htaccess (for rewrite rules )' ), 61 // Deprecated files. 62 'wp-layout.css' => __( 'Stylesheet' ), 63 'wp-comments.php' => __( 'Comments Template' ), 64 'wp-comments-popup.php' => __( 'Popup Comments Template' ), 65 'comments-popup.php' => __( 'Popup Comments' ), 66 ); 67 68 /** 69 * Gets the description for standard WordPress theme files. 70 * 71 * @since 1.5.0 72 * 73 * @global array $wp_file_descriptions Theme file descriptions. 74 * @global array $allowed_files List of allowed files. 75 * 76 * @param string $file Filesystem path or filename. 77 * @return string Description of file from $wp_file_descriptions or basename of $file if description doesn't exist. 78 * Appends 'Page Template' to basename of $file if the file is a page template. 79 */ 80 function get_file_description( $file ) { 81 global $wp_file_descriptions, $allowed_files; 82 83 $dirname = pathinfo( $file, PATHINFO_DIRNAME ); 84 $file_path = $allowed_files[ $file ]; 85 86 if ( isset( $wp_file_descriptions[ basename( $file ) ] ) && '.' === $dirname ) { 87 return $wp_file_descriptions[ basename( $file ) ]; 88 } elseif ( file_exists( $file_path ) && is_file( $file_path ) ) { 89 $template_data = implode( '', file( $file_path ) ); 90 91 if ( preg_match( '|Template Name:(.*)$|mi', $template_data, $name ) ) { 92 /* translators: %s: Template name. */ 93 return sprintf( __( '%s Page Template' ), _cleanup_header_comment( $name[1] ) ); 94 } 95 } 96 97 return trim( basename( $file ) ); 98 } 99 100 /** 101 * Gets the absolute filesystem path to the root of the WordPress installation. 102 * 103 * @since 1.5.0 104 * 105 * @return string Full filesystem path to the root of the WordPress installation. 106 */ 107 function get_home_path() { 108 $home = set_url_scheme( get_option( 'home' ), 'http' ); 109 $siteurl = set_url_scheme( get_option( 'siteurl' ), 'http' ); 110 111 if ( ! empty( $home ) && 0 !== strcasecmp( $home, $siteurl ) ) { 112 $wp_path_rel_to_home = str_ireplace( $home, '', $siteurl ); /* $siteurl - $home */ 113 $pos = strripos( str_replace( '\\', '/', $_SERVER['SCRIPT_FILENAME'] ), trailingslashit( $wp_path_rel_to_home ) ); 114 $home_path = substr( $_SERVER['SCRIPT_FILENAME'], 0, $pos ); 115 $home_path = trailingslashit( $home_path ); 116 } else { 117 $home_path = ABSPATH; 118 } 119 120 return str_replace( '\\', '/', $home_path ); 121 } 122 123 /** 124 * Returns a listing of all files in the specified folder and all subdirectories up to 100 levels deep. 125 * 126 * The depth of the recursiveness can be controlled by the $levels param. 127 * 128 * @since 2.6.0 129 * @since 4.9.0 Added the `$exclusions` parameter. 130 * @since 6.3.0 Added the `$include_hidden` parameter. 131 * 132 * @param string $folder Optional. Full path to folder. Default empty. 133 * @param int $levels Optional. Levels of folders to follow, Default 100 (PHP Loop limit). 134 * @param string[] $exclusions Optional. List of folders and files to skip. 135 * @param bool $include_hidden Optional. Whether to include details of hidden ("." prefixed) files. 136 * Default false. 137 * @return string[]|false Array of files on success, false on failure. 138 */ 139 function list_files( $folder = '', $levels = 100, $exclusions = array(), $include_hidden = false ) { 140 if ( empty( $folder ) ) { 141 return false; 142 } 143 144 $folder = trailingslashit( $folder ); 145 146 if ( ! $levels ) { 147 return false; 148 } 149 150 $files = array(); 151 152 $dir = @opendir( $folder ); 153 154 if ( $dir ) { 155 while ( ( $file = readdir( $dir ) ) !== false ) { 156 // Skip current and parent folder links. 157 if ( in_array( $file, array( '.', '..' ), true ) ) { 158 continue; 159 } 160 161 // Skip hidden and excluded files. 162 if ( ( ! $include_hidden && '.' === $file[0] ) || in_array( $file, $exclusions, true ) ) { 163 continue; 164 } 165 166 if ( is_dir( $folder . $file ) ) { 167 $files2 = list_files( $folder . $file, $levels - 1, array(), $include_hidden ); 168 if ( $files2 ) { 169 $files = array_merge( $files, $files2 ); 170 } else { 171 $files[] = $folder . $file . '/'; 172 } 173 } else { 174 $files[] = $folder . $file; 175 } 176 } 177 178 closedir( $dir ); 179 } 180 181 return $files; 182 } 183 184 /** 185 * Gets the list of file extensions that are editable in plugins. 186 * 187 * @since 4.9.0 188 * 189 * @param string $plugin Path to the plugin file relative to the plugins directory. 190 * @return string[] Array of editable file extensions. 191 */ 192 function wp_get_plugin_file_editable_extensions( $plugin ) { 193 194 $default_types = array( 195 'bash', 196 'conf', 197 'css', 198 'diff', 199 'htm', 200 'html', 201 'http', 202 'inc', 203 'include', 204 'js', 205 'json', 206 'jsx', 207 'less', 208 'md', 209 'patch', 210 'php', 211 'php3', 212 'php4', 213 'php5', 214 'php7', 215 'phps', 216 'phtml', 217 'sass', 218 'scss', 219 'sh', 220 'sql', 221 'svg', 222 'text', 223 'txt', 224 'xml', 225 'yaml', 226 'yml', 227 ); 228 229 /** 230 * Filters the list of file types allowed for editing in the plugin file editor. 231 * 232 * @since 2.8.0 233 * @since 4.9.0 Added the `$plugin` parameter. 234 * 235 * @param string[] $default_types An array of editable plugin file extensions. 236 * @param string $plugin Path to the plugin file relative to the plugins directory. 237 */ 238 $file_types = (array) apply_filters( 'editable_extensions', $default_types, $plugin ); 239 240 return $file_types; 241 } 242 243 /** 244 * Gets the list of file extensions that are editable for a given theme. 245 * 246 * @since 4.9.0 247 * 248 * @param WP_Theme $theme Theme object. 249 * @return string[] Array of editable file extensions. 250 */ 251 function wp_get_theme_file_editable_extensions( $theme ) { 252 253 $default_types = array( 254 'bash', 255 'conf', 256 'css', 257 'diff', 258 'htm', 259 'html', 260 'http', 261 'inc', 262 'include', 263 'js', 264 'json', 265 'jsx', 266 'less', 267 'md', 268 'patch', 269 'php', 270 'php3', 271 'php4', 272 'php5', 273 'php7', 274 'phps', 275 'phtml', 276 'sass', 277 'scss', 278 'sh', 279 'sql', 280 'svg', 281 'text', 282 'txt', 283 'xml', 284 'yaml', 285 'yml', 286 ); 287 288 /** 289 * Filters the list of file types allowed for editing in the theme file editor. 290 * 291 * @since 4.4.0 292 * 293 * @param string[] $default_types An array of editable theme file extensions. 294 * @param WP_Theme $theme The active theme object. 295 */ 296 $file_types = apply_filters( 'wp_theme_editor_filetypes', $default_types, $theme ); 297 298 // Ensure that default types are still there. 299 return array_unique( array_merge( $file_types, $default_types ) ); 300 } 301 302 /** 303 * Prints file editor templates (for plugins and themes). 304 * 305 * @since 4.9.0 306 */ 307 function wp_print_file_editor_templates() { 308 ?> 309 <script type="text/html" id="tmpl-wp-file-editor-notice"> 310 <div class="notice inline notice-{{ data.type || 'info' }} {{ data.alt ? 'notice-alt' : '' }} {{ data.dismissible ? 'is-dismissible' : '' }} {{ data.classes || '' }}"> 311 <# if ( 'php_error' === data.code ) { #> 312 <p> 313 <?php 314 printf( 315 /* translators: 1: Line number, 2: File path. */ 316 __( 'Your PHP code changes were not applied due to an error on line %1$s of file %2$s. Please fix and try saving again.' ), 317 '{{ data.line }}', 318 '{{ data.file }}' 319 ); 320 ?> 321 </p> 322 <pre>{{ data.message }}</pre> 323 <# } else if ( 'file_not_writable' === data.code ) { #> 324 <p> 325 <?php 326 printf( 327 /* translators: %s: Documentation URL. */ 328 __( 'You need to make this file writable before you can save your changes. See <a href="%s">Changing File Permissions</a> for more information.' ), 329 __( 'https://developer.wordpress.org/advanced-administration/server/file-permissions/' ) 330 ); 331 ?> 332 </p> 333 <# } else { #> 334 <p>{{ data.message || data.code }}</p> 335 336 <# if ( 'lint_errors' === data.code ) { #> 337 <p> 338 <# var elementId = 'el-' + String( Math.random() ); #> 339 <input id="{{ elementId }}" type="checkbox"> 340 <label for="{{ elementId }}"><?php _e( 'Update anyway, even though it might break your site?' ); ?></label> 341 </p> 342 <# } #> 343 <# } #> 344 <# if ( data.dismissible ) { #> 345 <button type="button" class="notice-dismiss"><span class="screen-reader-text"> 346 <?php 347 /* translators: Hidden accessibility text. */ 348 _e( 'Dismiss' ); 349 ?> 350 </span></button> 351 <# } #> 352 </div> 353 </script> 354 <?php 355 } 356 357 /** 358 * Attempts to edit a file for a theme or plugin. 359 * 360 * When editing a PHP file, loopback requests will be made to the admin and the homepage 361 * to attempt to see if there is a fatal error introduced. If so, the PHP change will be 362 * reverted. 363 * 364 * @since 4.9.0 365 * 366 * @param string[] $args { 367 * Args. Note that all of the arg values are already unslashed. They are, however, 368 * coming straight from `$_POST` and are not validated or sanitized in any way. 369 * 370 * @type string $file Relative path to file. 371 * @type string $plugin Path to the plugin file relative to the plugins directory. 372 * @type string $theme Theme being edited. 373 * @type string $newcontent New content for the file. 374 * @type string $nonce Nonce. 375 * } 376 * @return true|WP_Error True on success or `WP_Error` on failure. 377 */ 378 function wp_edit_theme_plugin_file( $args ) { 379 if ( empty( $args['file'] ) ) { 380 return new WP_Error( 'missing_file' ); 381 } 382 383 if ( 0 !== validate_file( $args['file'] ) ) { 384 return new WP_Error( 'bad_file' ); 385 } 386 387 if ( ! isset( $args['newcontent'] ) ) { 388 return new WP_Error( 'missing_content' ); 389 } 390 391 if ( ! isset( $args['nonce'] ) ) { 392 return new WP_Error( 'missing_nonce' ); 393 } 394 395 $file = $args['file']; 396 $content = $args['newcontent']; 397 398 $plugin = null; 399 $theme = null; 400 $real_file = null; 401 402 if ( ! empty( $args['plugin'] ) ) { 403 $plugin = $args['plugin']; 404 405 if ( ! current_user_can( 'edit_plugins' ) ) { 406 return new WP_Error( 'unauthorized', __( 'Sorry, you are not allowed to edit plugins for this site.' ) ); 407 } 408 409 if ( ! wp_verify_nonce( $args['nonce'], 'edit-plugin_' . $file ) ) { 410 return new WP_Error( 'nonce_failure' ); 411 } 412 413 if ( ! array_key_exists( $plugin, get_plugins() ) ) { 414 return new WP_Error( 'invalid_plugin' ); 415 } 416 417 if ( 0 !== validate_file( $file, get_plugin_files( $plugin ) ) ) { 418 return new WP_Error( 'bad_plugin_file_path', __( 'Sorry, that file cannot be edited.' ) ); 419 } 420 421 $editable_extensions = wp_get_plugin_file_editable_extensions( $plugin ); 422 423 $real_file = WP_PLUGIN_DIR . '/' . $file; 424 425 $is_active = in_array( 426 $plugin, 427 (array) get_option( 'active_plugins', array() ), 428 true 429 ); 430 431 } elseif ( ! empty( $args['theme'] ) ) { 432 $stylesheet = $args['theme']; 433 434 if ( 0 !== validate_file( $stylesheet ) ) { 435 return new WP_Error( 'bad_theme_path' ); 436 } 437 438 if ( ! current_user_can( 'edit_themes' ) ) { 439 return new WP_Error( 'unauthorized', __( 'Sorry, you are not allowed to edit templates for this site.' ) ); 440 } 441 442 $theme = wp_get_theme( $stylesheet ); 443 if ( ! $theme->exists() ) { 444 return new WP_Error( 'non_existent_theme', __( 'The requested theme does not exist.' ) ); 445 } 446 447 if ( ! wp_verify_nonce( $args['nonce'], 'edit-theme_' . $stylesheet . '_' . $file ) ) { 448 return new WP_Error( 'nonce_failure' ); 449 } 450 451 if ( $theme->errors() && 'theme_no_stylesheet' === $theme->errors()->get_error_code() ) { 452 return new WP_Error( 453 'theme_no_stylesheet', 454 __( 'The requested theme does not exist.' ) . ' ' . $theme->errors()->get_error_message() 455 ); 456 } 457 458 $editable_extensions = wp_get_theme_file_editable_extensions( $theme ); 459 460 $allowed_files = array(); 461 foreach ( $editable_extensions as $type ) { 462 switch ( $type ) { 463 case 'php': 464 $allowed_files = array_merge( $allowed_files, $theme->get_files( 'php', -1 ) ); 465 break; 466 case 'css': 467 $style_files = $theme->get_files( 'css', -1 ); 468 $allowed_files['style.css'] = $style_files['style.css']; 469 $allowed_files = array_merge( $allowed_files, $style_files ); 470 break; 471 default: 472 $allowed_files = array_merge( $allowed_files, $theme->get_files( $type, -1 ) ); 473 break; 474 } 475 } 476 477 // Compare based on relative paths. 478 if ( 0 !== validate_file( $file, array_keys( $allowed_files ) ) ) { 479 return new WP_Error( 'disallowed_theme_file', __( 'Sorry, that file cannot be edited.' ) ); 480 } 481 482 $real_file = $theme->get_stylesheet_directory() . '/' . $file; 483 484 $is_active = ( get_stylesheet() === $stylesheet || get_template() === $stylesheet ); 485 486 } else { 487 return new WP_Error( 'missing_theme_or_plugin' ); 488 } 489 490 // Ensure file is real. 491 if ( ! is_file( $real_file ) ) { 492 return new WP_Error( 'file_does_not_exist', __( 'File does not exist! Please double check the name and try again.' ) ); 493 } 494 495 // Ensure file extension is allowed. 496 $extension = null; 497 if ( preg_match( '/\.([^.]+)$/', $real_file, $matches ) ) { 498 $extension = strtolower( $matches[1] ); 499 if ( ! in_array( $extension, $editable_extensions, true ) ) { 500 return new WP_Error( 'illegal_file_type', __( 'Files of this type are not editable.' ) ); 501 } 502 } 503 504 $previous_content = file_get_contents( $real_file ); 505 506 if ( ! is_writable( $real_file ) ) { 507 return new WP_Error( 'file_not_writable' ); 508 } 509 510 $f = fopen( $real_file, 'w+' ); 511 512 if ( false === $f ) { 513 return new WP_Error( 'file_not_writable' ); 514 } 515 516 $written = fwrite( $f, $content ); 517 fclose( $f ); 518 519 if ( false === $written ) { 520 return new WP_Error( 'unable_to_write', __( 'Unable to write to file.' ) ); 521 } 522 523 wp_opcache_invalidate( $real_file, true ); 524 525 if ( $is_active && 'php' === $extension ) { 526 527 $scrape_key = md5( rand() ); 528 $transient = 'scrape_key_' . $scrape_key; 529 $scrape_nonce = (string) rand(); 530 // It shouldn't take more than 60 seconds to make the two loopback requests. 531 set_transient( $transient, $scrape_nonce, 60 ); 532 533 $cookies = wp_unslash( $_COOKIE ); 534 $scrape_params = array( 535 'wp_scrape_key' => $scrape_key, 536 'wp_scrape_nonce' => $scrape_nonce, 537 ); 538 $headers = array( 539 'Cache-Control' => 'no-cache', 540 ); 541 542 /** This filter is documented in wp-includes/class-wp-http-streams.php */ 543 $sslverify = apply_filters( 'https_local_ssl_verify', false ); 544 545 // Include Basic auth in loopback requests. 546 if ( isset( $_SERVER['PHP_AUTH_USER'] ) && isset( $_SERVER['PHP_AUTH_PW'] ) ) { 547 $headers['Authorization'] = 'Basic ' . base64_encode( wp_unslash( $_SERVER['PHP_AUTH_USER'] ) . ':' . wp_unslash( $_SERVER['PHP_AUTH_PW'] ) ); 548 } 549 550 // Make sure PHP process doesn't die before loopback requests complete. 551 if ( function_exists( 'set_time_limit' ) ) { 552 set_time_limit( 5 * MINUTE_IN_SECONDS ); 553 } 554 555 // Time to wait for loopback requests to finish. 556 $timeout = 100; // 100 seconds. 557 558 $needle_start = "###### wp_scraping_result_start:$scrape_key ######"; 559 $needle_end = "###### wp_scraping_result_end:$scrape_key ######"; 560 561 // Attempt loopback request to editor to see if user just whitescreened themselves. 562 if ( $plugin ) { 563 $url = add_query_arg( compact( 'plugin', 'file' ), admin_url( 'plugin-editor.php' ) ); 564 } elseif ( isset( $stylesheet ) ) { 565 $url = add_query_arg( 566 array( 567 'theme' => $stylesheet, 568 'file' => $file, 569 ), 570 admin_url( 'theme-editor.php' ) 571 ); 572 } else { 573 $url = admin_url(); 574 } 575 576 if ( function_exists( 'session_status' ) && PHP_SESSION_ACTIVE === session_status() ) { 577 /* 578 * Close any active session to prevent HTTP requests from timing out 579 * when attempting to connect back to the site. 580 */ 581 session_write_close(); 582 } 583 584 $url = add_query_arg( $scrape_params, $url ); 585 $r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout', 'sslverify' ) ); 586 $body = wp_remote_retrieve_body( $r ); 587 $scrape_result_position = strpos( $body, $needle_start ); 588 589 $loopback_request_failure = array( 590 'code' => 'loopback_request_failed', 591 '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.' ), 592 ); 593 $json_parse_failure = array( 594 'code' => 'json_parse_error', 595 ); 596 597 $result = null; 598 599 if ( false === $scrape_result_position ) { 600 $result = $loopback_request_failure; 601 } else { 602 $error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) ); 603 $error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) ); 604 $result = json_decode( trim( $error_output ), true ); 605 if ( empty( $result ) ) { 606 $result = $json_parse_failure; 607 } 608 } 609 610 // Try making request to homepage as well to see if visitors have been whitescreened. 611 if ( true === $result ) { 612 $url = home_url( '/' ); 613 $url = add_query_arg( $scrape_params, $url ); 614 $r = wp_remote_get( $url, compact( 'cookies', 'headers', 'timeout', 'sslverify' ) ); 615 $body = wp_remote_retrieve_body( $r ); 616 $scrape_result_position = strpos( $body, $needle_start ); 617 618 if ( false === $scrape_result_position ) { 619 $result = $loopback_request_failure; 620 } else { 621 $error_output = substr( $body, $scrape_result_position + strlen( $needle_start ) ); 622 $error_output = substr( $error_output, 0, strpos( $error_output, $needle_end ) ); 623 $result = json_decode( trim( $error_output ), true ); 624 if ( empty( $result ) ) { 625 $result = $json_parse_failure; 626 } 627 } 628 } 629 630 delete_transient( $transient ); 631 632 if ( true !== $result ) { 633 // Roll-back file change. 634 file_put_contents( $real_file, $previous_content ); 635 wp_opcache_invalidate( $real_file, true ); 636 637 if ( ! isset( $result['message'] ) ) { 638 $message = __( 'An error occurred. Please try again later.' ); 639 } else { 640 $message = $result['message']; 641 unset( $result['message'] ); 642 } 643 644 return new WP_Error( 'php_error', $message, $result ); 645 } 646 } 647 648 if ( $theme instanceof WP_Theme ) { 649 $theme->cache_delete(); 650 } 651 652 return true; 653 } 654 655 656 /** 657 * Returns a filename of a temporary unique file. 658 * 659 * Please note that the calling function must delete or move the file. 660 * 661 * The filename is based off the passed parameter or defaults to the current unix timestamp, 662 * while the directory can either be passed as well, or by leaving it blank, default to a writable 663 * temporary directory. 664 * 665 * @since 2.6.0 666 * 667 * @param string $filename Optional. Filename to base the Unique file off. Default empty. 668 * @param string $dir Optional. Directory to store the file in. Default empty. 669 * @return string A writable filename. 670 */ 671 function wp_tempnam( $filename = '', $dir = '' ) { 672 if ( empty( $dir ) ) { 673 $dir = get_temp_dir(); 674 } 675 676 if ( empty( $filename ) || in_array( $filename, array( '.', '/', '\\' ), true ) ) { 677 $filename = uniqid(); 678 } 679 680 // Use the basename of the given file without the extension as the name for the temporary directory. 681 $temp_filename = basename( $filename ); 682 $temp_filename = preg_replace( '|\.[^.]*$|', '', $temp_filename ); 683 684 // If the folder is falsey, use its parent directory name instead. 685 if ( ! $temp_filename ) { 686 return wp_tempnam( dirname( $filename ), $dir ); 687 } 688 689 // Suffix some random data to avoid filename conflicts. 690 $temp_filename .= '-' . wp_generate_password( 6, false ); 691 $temp_filename .= '.tmp'; 692 $temp_filename = wp_unique_filename( $dir, $temp_filename ); 693 694 /* 695 * Filesystems typically have a limit of 255 characters for a filename. 696 * 697 * If the generated unique filename exceeds this, truncate the initial 698 * filename and try again. 699 * 700 * As it's possible that the truncated filename may exist, producing a 701 * suffix of "-1" or "-10" which could exceed the limit again, truncate 702 * it to 252 instead. 703 */ 704 $characters_over_limit = strlen( $temp_filename ) - 252; 705 if ( $characters_over_limit > 0 ) { 706 $filename = substr( $filename, 0, -$characters_over_limit ); 707 return wp_tempnam( $filename, $dir ); 708 } 709 710 $temp_filename = $dir . $temp_filename; 711 712 $fp = @fopen( $temp_filename, 'x' ); 713 714 if ( ! $fp && is_writable( $dir ) && file_exists( $temp_filename ) ) { 715 return wp_tempnam( $filename, $dir ); 716 } 717 718 if ( $fp ) { 719 fclose( $fp ); 720 } 721 722 return $temp_filename; 723 } 724 725 /** 726 * Makes sure that the file that was requested to be edited is allowed to be edited. 727 * 728 * Function will die if you are not allowed to edit the file. 729 * 730 * @since 1.5.0 731 * 732 * @param string $file File the user is attempting to edit. 733 * @param string[] $allowed_files Optional. Array of allowed files to edit. 734 * `$file` must match an entry exactly. 735 * @return string|void Returns the file name on success, dies on failure. 736 */ 737 function validate_file_to_edit( $file, $allowed_files = array() ) { 738 $code = validate_file( $file, $allowed_files ); 739 740 if ( ! $code ) { 741 return $file; 742 } 743 744 switch ( $code ) { 745 case 1: 746 wp_die( __( 'Sorry, that file cannot be edited.' ) ); 747 748 // case 2 : 749 // wp_die( __('Sorry, cannot call files with their real path.' )); 750 751 case 3: 752 wp_die( __( 'Sorry, that file cannot be edited.' ) ); 753 } 754 } 755 756 /** 757 * Handles PHP uploads in WordPress. 758 * 759 * Sanitizes file names, checks extensions for mime type, and moves the file 760 * to the appropriate directory within the uploads directory. 761 * 762 * @access private 763 * @since 4.0.0 764 * 765 * @see wp_handle_upload_error 766 * 767 * @param array $file { 768 * Reference to a single element from `$_FILES`. Call the function once for each uploaded file. 769 * 770 * @type string $name The original name of the file on the client machine. 771 * @type string $type The mime type of the file, if the browser provided this information. 772 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 773 * @type int $size The size, in bytes, of the uploaded file. 774 * @type int $error The error code associated with this file upload. 775 * } 776 * @param array|false $overrides { 777 * An array of override parameters for this file, or boolean false if none are provided. 778 * 779 * @type callable $upload_error_handler Function to call when there is an error during the upload process. 780 * See {@see wp_handle_upload_error()}. 781 * @type callable $unique_filename_callback Function to call when determining a unique file name for the file. 782 * See {@see wp_unique_filename()}. 783 * @type string[] $upload_error_strings The strings that describe the error indicated in 784 * `$_FILES[{form field}]['error']`. 785 * @type bool $test_form Whether to test that the `$_POST['action']` parameter is as expected. 786 * @type bool $test_size Whether to test that the file size is greater than zero bytes. 787 * @type bool $test_type Whether to test that the mime type of the file is as expected. 788 * @type string[] $mimes Array of allowed mime types keyed by their file extension regex. 789 * } 790 * @param string $time Time formatted in 'yyyy/mm'. 791 * @param string $action Expected value for `$_POST['action']`. 792 * @return array { 793 * On success, returns an associative array of file attributes. 794 * On failure, returns `$overrides['upload_error_handler']( &$file, $message )` 795 * or `array( 'error' => $message )`. 796 * 797 * @type string $file Filename of the newly-uploaded file. 798 * @type string $url URL of the newly-uploaded file. 799 * @type string $type Mime type of the newly-uploaded file. 800 * } 801 */ 802 function _wp_handle_upload( &$file, $overrides, $time, $action ) { 803 // The default error handler. 804 if ( ! function_exists( 'wp_handle_upload_error' ) ) { 805 function wp_handle_upload_error( &$file, $message ) { 806 return array( 'error' => $message ); 807 } 808 } 809 810 /** 811 * Filters the data for a file before it is uploaded to WordPress. 812 * 813 * The dynamic portion of the hook name, `$action`, refers to the post action. 814 * 815 * Possible hook names include: 816 * 817 * - `wp_handle_sideload_prefilter` 818 * - `wp_handle_upload_prefilter` 819 * 820 * @since 2.9.0 as 'wp_handle_upload_prefilter'. 821 * @since 4.0.0 Converted to a dynamic hook with `$action`. 822 * 823 * @param array $file { 824 * Reference to a single element from `$_FILES`. 825 * 826 * @type string $name The original name of the file on the client machine. 827 * @type string $type The mime type of the file, if the browser provided this information. 828 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 829 * @type int $size The size, in bytes, of the uploaded file. 830 * @type int $error The error code associated with this file upload. 831 * } 832 */ 833 $file = apply_filters( "{$action}_prefilter", $file ); 834 835 /** 836 * Filters the override parameters for a file before it is uploaded to WordPress. 837 * 838 * The dynamic portion of the hook name, `$action`, refers to the post action. 839 * 840 * Possible hook names include: 841 * 842 * - `wp_handle_sideload_overrides` 843 * - `wp_handle_upload_overrides` 844 * 845 * @since 5.7.0 846 * 847 * @param array|false $overrides An array of override parameters for this file. Boolean false if none are 848 * provided. See {@see _wp_handle_upload()}. 849 * @param array $file { 850 * Reference to a single element from `$_FILES`. 851 * 852 * @type string $name The original name of the file on the client machine. 853 * @type string $type The mime type of the file, if the browser provided this information. 854 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 855 * @type int $size The size, in bytes, of the uploaded file. 856 * @type int $error The error code associated with this file upload. 857 * } 858 */ 859 $overrides = apply_filters( "{$action}_overrides", $overrides, $file ); 860 861 // You may define your own function and pass the name in $overrides['upload_error_handler']. 862 $upload_error_handler = 'wp_handle_upload_error'; 863 if ( isset( $overrides['upload_error_handler'] ) ) { 864 $upload_error_handler = $overrides['upload_error_handler']; 865 } 866 867 // You may have had one or more 'wp_handle_upload_prefilter' functions error out the file. Handle that gracefully. 868 if ( isset( $file['error'] ) && ! is_numeric( $file['error'] ) && $file['error'] ) { 869 return call_user_func_array( $upload_error_handler, array( &$file, $file['error'] ) ); 870 } 871 872 // Install user overrides. Did we mention that this voids your warranty? 873 874 // You may define your own function and pass the name in $overrides['unique_filename_callback']. 875 $unique_filename_callback = null; 876 if ( isset( $overrides['unique_filename_callback'] ) ) { 877 $unique_filename_callback = $overrides['unique_filename_callback']; 878 } 879 880 /* 881 * This may not have originally been intended to be overridable, 882 * but historically has been. 883 */ 884 if ( isset( $overrides['upload_error_strings'] ) ) { 885 $upload_error_strings = $overrides['upload_error_strings']; 886 } else { 887 // Courtesy of php.net, the strings that describe the error indicated in $_FILES[{form field}]['error']. 888 $upload_error_strings = array( 889 false, 890 sprintf( 891 /* translators: 1: upload_max_filesize, 2: php.ini */ 892 __( 'The uploaded file exceeds the %1$s directive in %2$s.' ), 893 'upload_max_filesize', 894 'php.ini' 895 ), 896 sprintf( 897 /* translators: %s: MAX_FILE_SIZE */ 898 __( 'The uploaded file exceeds the %s directive that was specified in the HTML form.' ), 899 'MAX_FILE_SIZE' 900 ), 901 __( 'The uploaded file was only partially uploaded.' ), 902 __( 'No file was uploaded.' ), 903 '', 904 __( 'Missing a temporary folder.' ), 905 __( 'Failed to write file to disk.' ), 906 __( 'File upload stopped by extension.' ), 907 ); 908 } 909 910 // All tests are on by default. Most can be turned off by $overrides[{test_name}] = false; 911 $test_form = isset( $overrides['test_form'] ) ? $overrides['test_form'] : true; 912 $test_size = isset( $overrides['test_size'] ) ? $overrides['test_size'] : true; 913 914 // If you override this, you must provide $ext and $type!! 915 $test_type = isset( $overrides['test_type'] ) ? $overrides['test_type'] : true; 916 $mimes = isset( $overrides['mimes'] ) ? $overrides['mimes'] : null; 917 918 // A correct form post will pass this test. 919 if ( $test_form && ( ! isset( $_POST['action'] ) || $_POST['action'] !== $action ) ) { 920 return call_user_func_array( $upload_error_handler, array( &$file, __( 'Invalid form submission.' ) ) ); 921 } 922 923 // A successful upload will pass this test. It makes no sense to override this one. 924 if ( isset( $file['error'] ) && $file['error'] > 0 ) { 925 return call_user_func_array( $upload_error_handler, array( &$file, $upload_error_strings[ $file['error'] ] ) ); 926 } 927 928 // A properly uploaded file will pass this test. There should be no reason to override this one. 929 $test_uploaded_file = 'wp_handle_upload' === $action ? is_uploaded_file( $file['tmp_name'] ) : @is_readable( $file['tmp_name'] ); 930 if ( ! $test_uploaded_file ) { 931 return call_user_func_array( $upload_error_handler, array( &$file, __( 'Specified file failed upload test.' ) ) ); 932 } 933 934 $test_file_size = 'wp_handle_upload' === $action ? $file['size'] : filesize( $file['tmp_name'] ); 935 // A non-empty file will pass this test. 936 if ( $test_size && ! ( $test_file_size > 0 ) ) { 937 if ( is_multisite() ) { 938 $error_msg = __( 'File is empty. Please upload something more substantial.' ); 939 } else { 940 $error_msg = sprintf( 941 /* translators: 1: php.ini, 2: post_max_size, 3: upload_max_filesize */ 942 __( 'File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your %1$s file or by %2$s being defined as smaller than %3$s in %1$s.' ), 943 'php.ini', 944 'post_max_size', 945 'upload_max_filesize' 946 ); 947 } 948 949 return call_user_func_array( $upload_error_handler, array( &$file, $error_msg ) ); 950 } 951 952 // A correct MIME type will pass this test. Override $mimes or use the upload_mimes filter. 953 if ( $test_type ) { 954 $wp_filetype = wp_check_filetype_and_ext( $file['tmp_name'], $file['name'], $mimes ); 955 $ext = empty( $wp_filetype['ext'] ) ? '' : $wp_filetype['ext']; 956 $type = empty( $wp_filetype['type'] ) ? '' : $wp_filetype['type']; 957 $proper_filename = empty( $wp_filetype['proper_filename'] ) ? '' : $wp_filetype['proper_filename']; 958 959 // Check to see if wp_check_filetype_and_ext() determined the filename was incorrect. 960 if ( $proper_filename ) { 961 $file['name'] = $proper_filename; 962 } 963 964 if ( ( ! $type || ! $ext ) && ! current_user_can( 'unfiltered_upload' ) ) { 965 return call_user_func_array( $upload_error_handler, array( &$file, __( 'Sorry, you are not allowed to upload this file type.' ) ) ); 966 } 967 968 if ( ! $type ) { 969 $type = $file['type']; 970 } 971 } else { 972 $type = ''; 973 } 974 975 /* 976 * A writable uploads dir will pass this test. Again, there's no point 977 * overriding this one. 978 */ 979 $uploads = wp_upload_dir( $time ); 980 if ( ! ( $uploads && false === $uploads['error'] ) ) { 981 return call_user_func_array( $upload_error_handler, array( &$file, $uploads['error'] ) ); 982 } 983 984 $filename = wp_unique_filename( $uploads['path'], $file['name'], $unique_filename_callback ); 985 986 // Move the file to the uploads dir. 987 $new_file = $uploads['path'] . "/$filename"; 988 989 /** 990 * Filters whether to short-circuit moving the uploaded file after passing all checks. 991 * 992 * If a non-null value is returned from the filter, moving the file and any related 993 * error reporting will be completely skipped. 994 * 995 * @since 4.9.0 996 * 997 * @param mixed $move_new_file If null (default) move the file after the upload. 998 * @param array $file { 999 * Reference to a single element from `$_FILES`. 1000 * 1001 * @type string $name The original name of the file on the client machine. 1002 * @type string $type The mime type of the file, if the browser provided this information. 1003 * @type string $tmp_name The temporary filename of the file in which the uploaded file was stored on the server. 1004 * @type int $size The size, in bytes, of the uploaded file. 1005 * @type int $error The error code associated with this file upload. 1006 * } 1007 * @param string $new_file Filename of the newly-uploaded file. 1008 * @param string $type Mime type of the newly-uploaded file. 1009 */ 1010 $move_new_file = apply_filters( 'pre_move_uploaded_file', null, $file, $new_file, $type ); 1011 1012 if ( null === $move_new_file ) { 1013 if ( 'wp_handle_upload' === $action ) { 1014 $move_new_file = @move_uploaded_file( $file['tmp_name'], $new_file ); 1015 } else { 1016 // Use copy and unlink because rename breaks streams. 1017 // phpcs:ignore WordPress.PHP.NoSilencedErrors.Discouraged 1018 $move_new_file = @copy( $file['tmp_name'], $new_file ); 1019 unlink( $file['tmp_name'] ); 1020 } 1021 1022 if ( false === $move_new_file ) { 1023 if ( str_starts_with( $uploads['basedir'], ABSPATH ) ) { 1024 $error_path = str_replace( ABSPATH, '', $uploads['basedir'] ) . $uploads['subdir']; 1025 } else { 1026 $error_path = basename( $uploads['basedir'] ) . $uploads['subdir']; 1027 } 1028 1029 return $upload_error_handler( 1030 $file, 1031 sprintf( 1032 /* translators: %s: Destination file path. */ 1033 __( 'The uploaded file could not be moved to %s.' ), 1034 $error_path 1035 ) 1036 ); 1037 } 1038 } 1039 1040 // Set correct file permissions. 1041 $stat = stat( dirname( $new_file ) ); 1042 $perms = $stat['mode'] & 0000666; 1043 chmod( $new_file, $perms ); 1044 1045 // Compute the URL. 1046 $url = $uploads['url'] . "/$filename"; 1047 1048 if ( is_multisite() ) { 1049 clean_dirsize_cache( $new_file ); 1050 } 1051 1052 /** 1053 * Filters the data array for the uploaded file. 1054 * 1055 * @since 2.1.0 1056 * 1057 * @param array $upload { 1058 * Array of upload data. 1059 * 1060 * @type string $file Filename of the newly-uploaded file. 1061 * @type string $url URL of the newly-uploaded file. 1062 * @type string $type Mime type of the newly-uploaded file. 1063 * } 1064 * @param string $context The type of upload action. Values include 'upload' or 'sideload'. 1065 */ 1066 return apply_filters( 1067 'wp_handle_upload', 1068 array( 1069 'file' => $new_file, 1070 'url' => $url, 1071 'type' => $type, 1072 ), 1073 'wp_handle_sideload' === $action ? 'sideload' : 'upload' 1074 ); 1075 } 1076 1077 /** 1078 * Wrapper for _wp_handle_upload(). 1079 * 1080 * Passes the {@see 'wp_handle_upload'} action. 1081 * 1082 * @since 2.0.0 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|null $time Optional. Time formatted in 'yyyy/mm'. Default null. 1093 * @return array See _wp_handle_upload() for return value. 1094 */ 1095 function wp_handle_upload( &$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_upload'; 1101 if ( isset( $overrides['action'] ) ) { 1102 $action = $overrides['action']; 1103 } 1104 1105 return _wp_handle_upload( $file, $overrides, $time, $action ); 1106 } 1107 1108 /** 1109 * Wrapper for _wp_handle_upload(). 1110 * 1111 * Passes the {@see 'wp_handle_sideload'} action. 1112 * 1113 * @since 2.6.0 1114 * 1115 * @see _wp_handle_upload() 1116 * 1117 * @param array $file Reference to a single element of `$_FILES`. 1118 * Call the function once for each uploaded file. 1119 * See _wp_handle_upload() for accepted values. 1120 * @param array|false $overrides Optional. An associative array of names => values 1121 * to override default variables. Default false. 1122 * See _wp_handle_upload() for accepted values. 1123 * @param string|null $time Optional. Time formatted in 'yyyy/mm'. Default null. 1124 * @return array See _wp_handle_upload() for return value. 1125 */ 1126 function wp_handle_sideload( &$file, $overrides = false, $time = null ) { 1127 /* 1128 * $_POST['action'] must be set and its value must equal $overrides['action'] 1129 * or this: 1130 */ 1131 $action = 'wp_handle_sideload'; 1132 if ( isset( $overrides['action'] ) ) { 1133 $action = $overrides['action']; 1134 } 1135 1136 return _wp_handle_upload( $file, $overrides, $time, $action ); 1137 } 1138 1139 /** 1140 * Downloads a URL to a local temporary file using the WordPress HTTP API. 1141 * 1142 * Please note that the calling function must delete or move the file. 1143 * 1144 * @since 2.5.0 1145 * @since 5.2.0 Signature Verification with SoftFail was added. 1146 * @since 5.9.0 Support for Content-Disposition filename was added. 1147 * 1148 * @param string $url The URL of the file to download. 1149 * @param int $timeout The timeout for the request to download the file. 1150 * Default 300 seconds. 1151 * @param bool $signature_verification Whether to perform Signature Verification. 1152 * Default false. 1153 * @return string|WP_Error Filename on success, WP_Error on failure. 1154 */ 1155 function download_url( $url, $timeout = 300, $signature_verification = false ) { 1156 // WARNING: The file is not automatically deleted, the script must delete or move the file. 1157 if ( ! $url ) { 1158 return new WP_Error( 'http_no_url', __( 'No URL Provided.' ) ); 1159 } 1160 1161 $url_path = parse_url( $url, PHP_URL_PATH ); 1162 $url_filename = ''; 1163 if ( is_string( $url_path ) && '' !== $url_path ) { 1164 $url_filename = basename( $url_path ); 1165 } 1166 1167 $tmpfname = wp_tempnam( $url_filename ); 1168 if ( ! $tmpfname ) { 1169 return new WP_Error( 'http_no_file', __( 'Could not create temporary file.' ) ); 1170 } 1171 1172 $response = wp_safe_remote_get( 1173 $url, 1174 array( 1175 'timeout' => $timeout, 1176 'stream' => true, 1177 'filename' => $tmpfname, 1178 ) 1179 ); 1180 1181 if ( is_wp_error( $response ) ) { 1182 unlink( $tmpfname ); 1183 return $response; 1184 } 1185 1186 $response_code = wp_remote_retrieve_response_code( $response ); 1187 1188 if ( 200 !== $response_code ) { 1189 $data = array( 1190 'code' => $response_code, 1191 ); 1192 1193 // Retrieve a sample of the response body for debugging purposes. 1194 $tmpf = fopen( $tmpfname, 'rb' ); 1195 1196 if ( $tmpf ) { 1197 /** 1198 * Filters the maximum error response body size in `download_url()`. 1199 * 1200 * @since 5.1.0 1201 * 1202 * @see download_url() 1203 * 1204 * @param int $size The maximum error response body size. Default 1 KB. 1205 */ 1206 $response_size = apply_filters( 'download_url_error_max_body_size', KB_IN_BYTES ); 1207 1208 $data['body'] = fread( $tmpf, $response_size ); 1209 fclose( $tmpf ); 1210 } 1211 1212 unlink( $tmpfname ); 1213 1214 return new WP_Error( 'http_404', trim( wp_remote_retrieve_response_message( $response ) ), $data ); 1215 } 1216 1217 $content_disposition = wp_remote_retrieve_header( $response, 'Content-Disposition' ); 1218 1219 if ( $content_disposition ) { 1220 $content_disposition = strtolower( $content_disposition ); 1221 1222 if ( str_starts_with( $content_disposition, 'attachment; filename=' ) ) { 1223 $tmpfname_disposition = sanitize_file_name( substr( $content_disposition, 21 ) ); 1224 } else { 1225 $tmpfname_disposition = ''; 1226 } 1227 1228 // Potential file name must be valid string. 1229 if ( $tmpfname_disposition && is_string( $tmpfname_disposition ) 1230 && ( 0 === validate_file( $tmpfname_disposition ) ) 1231 ) { 1232 $tmpfname_disposition = dirname( $tmpfname ) . '/' . $tmpfname_disposition; 1233 1234 if ( rename( $tmpfname, $tmpfname_disposition ) ) { 1235 $tmpfname = $tmpfname_disposition; 1236 } 1237 1238 if ( ( $tmpfname !== $tmpfname_disposition ) && file_exists( $tmpfname_disposition ) ) { 1239 unlink( $tmpfname_disposition ); 1240 } 1241 } 1242 } 1243 1244 $mime_type = wp_remote_retrieve_header( $response, 'content-type' ); 1245 if ( $mime_type && 'tmp' === pathinfo( $tmpfname, PATHINFO_EXTENSION ) ) { 1246 $valid_mime_types = array_flip( get_allowed_mime_types() ); 1247 if ( ! empty( $valid_mime_types[ $mime_type ] ) ) { 1248 $extensions = explode( '|', $valid_mime_types[ $mime_type ] ); 1249 $new_image_name = substr( $tmpfname, 0, -4 ) . ".{$extensions[0]}"; 1250 if ( 0 === validate_file( $new_image_name ) ) { 1251 if ( rename( $tmpfname, $new_image_name ) ) { 1252 $tmpfname = $new_image_name; 1253 } 1254 1255 if ( ( $tmpfname !== $new_image_name ) && file_exists( $new_image_name ) ) { 1256 unlink( $new_image_name ); 1257 } 1258 } 1259 } 1260 } 1261 1262 $content_md5 = wp_remote_retrieve_header( $response, 'Content-MD5' ); 1263 1264 if ( $content_md5 ) { 1265 $md5_check = verify_file_md5( $tmpfname, $content_md5 ); 1266 1267 if ( is_wp_error( $md5_check ) ) { 1268 unlink( $tmpfname ); 1269 return $md5_check; 1270 } 1271 } 1272 1273 // If the caller expects signature verification to occur, check to see if this URL supports it. 1274 if ( $signature_verification ) { 1275 /** 1276 * Filters the list of hosts which should have Signature Verification attempted on. 1277 * 1278 * @since 5.2.0 1279 * 1280 * @param string[] $hostnames List of hostnames. 1281 */ 1282 $signed_hostnames = apply_filters( 'wp_signature_hosts', array( 'wordpress.org', 'downloads.wordpress.org', 's.w.org' ) ); 1283 1284 $signature_verification = in_array( parse_url( $url, PHP_URL_HOST ), $signed_hostnames, true ); 1285 } 1286 1287 // Perform signature validation if supported. 1288 if ( $signature_verification ) { 1289 $signature = wp_remote_retrieve_header( $response, 'X-Content-Signature' ); 1290 1291 if ( ! $signature ) { 1292 /* 1293 * Retrieve signatures from a file if the header wasn't included. 1294 * WordPress.org stores signatures at $package_url.sig. 1295 */ 1296 1297 $signature_url = false; 1298 1299 if ( is_string( $url_path ) && ( str_ends_with( $url_path, '.zip' ) || str_ends_with( $url_path, '.tar.gz' ) ) ) { 1300 $signature_url = str_replace( $url_path, $url_path . '.sig', $url ); 1301 } 1302 1303 /** 1304 * Filters the URL where the signature for a file is located. 1305 * 1306 * @since 5.2.0 1307 * 1308 * @param false|string $signature_url The URL where signatures can be found for a file, or false if none are known. 1309 * @param string $url The URL being verified. 1310 */ 1311 $signature_url = apply_filters( 'wp_signature_url', $signature_url, $url ); 1312 1313 if ( $signature_url ) { 1314 $signature_request = wp_safe_remote_get( 1315 $signature_url, 1316 array( 1317 'limit_response_size' => 10 * KB_IN_BYTES, // 10KB should be large enough for quite a few signatures. 1318 ) 1319 ); 1320 1321 if ( ! is_wp_error( $signature_request ) && 200 === wp_remote_retrieve_response_code( $signature_request ) ) { 1322 $signature = explode( "\n", wp_remote_retrieve_body( $signature_request ) ); 1323 } 1324 } 1325 } 1326 1327 // Perform the checks. 1328 $signature_verification = verify_file_signature( $tmpfname, $signature, $url_filename ); 1329 } 1330 1331 if ( is_wp_error( $signature_verification ) ) { 1332 if ( 1333 /** 1334 * Filters whether Signature Verification failures should be allowed to soft fail. 1335 * 1336 * WARNING: This may be removed from a future release. 1337 * 1338 * @since 5.2.0 1339 * 1340 * @param bool $signature_softfail If a softfail is allowed. 1341 * @param string $url The url being accessed. 1342 */ 1343 apply_filters( 'wp_signature_softfail', true, $url ) 1344 ) { 1345 $signature_verification->add_data( $tmpfname, 'softfail-filename' ); 1346 } else { 1347 // Hard-fail. 1348 unlink( $tmpfname ); 1349 } 1350 1351 return $signature_verification; 1352 } 1353 1354 return $tmpfname; 1355 } 1356 1357 /** 1358 * Calculates and compares the MD5 of a file to its expected value. 1359 * 1360 * @since 3.7.0 1361 * 1362 * @param string $filename The filename to check the MD5 of. 1363 * @param string $expected_md5 The expected MD5 of the file, either a base64-encoded raw md5, 1364 * or a hex-encoded md5. 1365 * @return bool|WP_Error True on success, false when the MD5 format is unknown/unexpected, 1366 * WP_Error on failure. 1367 */ 1368 function verify_file_md5( $filename, $expected_md5 ) { 1369 if ( 32 === strlen( $expected_md5 ) ) { 1370 $expected_raw_md5 = pack( 'H*', $expected_md5 ); 1371 } elseif ( 24 === strlen( $expected_md5 ) ) { 1372 $expected_raw_md5 = base64_decode( $expected_md5 ); 1373 } else { 1374 return false; // Unknown format. 1375 } 1376 1377 $file_md5 = md5_file( $filename, true ); 1378 1379 if ( $file_md5 === $expected_raw_md5 ) { 1380 return true; 1381 } 1382 1383 return new WP_Error( 1384 'md5_mismatch', 1385 sprintf( 1386 /* translators: 1: File checksum, 2: Expected checksum value. */ 1387 __( 'The checksum of the file (%1$s) does not match the expected checksum value (%2$s).' ), 1388 bin2hex( $file_md5 ), 1389 bin2hex( $expected_raw_md5 ) 1390 ) 1391 ); 1392 } 1393 1394 /** 1395 * Verifies the contents of a file against its ED25519 signature. 1396 * 1397 * @since 5.2.0 1398 * 1399 * @param string $filename The file to validate. 1400 * @param string|array $signatures A Signature provided for the file. 1401 * @param string|false $filename_for_errors Optional. A friendly filename for errors. 1402 * @return bool|WP_Error True on success, false if verification not attempted, 1403 * or WP_Error describing an error condition. 1404 */ 1405 function verify_file_signature( $filename, $signatures, $filename_for_errors = false ) { 1406 if ( ! $filename_for_errors ) { 1407 $filename_for_errors = wp_basename( $filename ); 1408 } 1409 1410 // Check we can process signatures. 1411 if ( ! function_exists( 'sodium_crypto_sign_verify_detached' ) || ! in_array( 'sha384', array_map( 'strtolower', hash_algos() ), true ) ) { 1412 return new WP_Error( 1413 'signature_verification_unsupported', 1414 sprintf( 1415 /* translators: %s: The filename of the package. */ 1416 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1417 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1418 ), 1419 ( ! function_exists( 'sodium_crypto_sign_verify_detached' ) ? 'sodium_crypto_sign_verify_detached' : 'sha384' ) 1420 ); 1421 } 1422 1423 // Verify runtime speed of Sodium_Compat is acceptable. 1424 if ( ! extension_loaded( 'sodium' ) && ! ParagonIE_Sodium_Compat::polyfill_is_fast() ) { 1425 $sodium_compat_is_fast = false; 1426 1427 // Allow for an old version of Sodium_Compat being loaded before the bundled WordPress one. 1428 if ( method_exists( 'ParagonIE_Sodium_Compat', 'runtime_speed_test' ) ) { 1429 /* 1430 * Run `ParagonIE_Sodium_Compat::runtime_speed_test()` in optimized integer mode, 1431 * as that's what WordPress utilizes during signing verifications. 1432 */ 1433 // phpcs:disable WordPress.NamingConventions.ValidVariableName 1434 $old_fastMult = ParagonIE_Sodium_Compat::$fastMult; 1435 ParagonIE_Sodium_Compat::$fastMult = true; 1436 $sodium_compat_is_fast = ParagonIE_Sodium_Compat::runtime_speed_test( 100, 10 ); 1437 ParagonIE_Sodium_Compat::$fastMult = $old_fastMult; 1438 // phpcs:enable 1439 } 1440 1441 /* 1442 * This cannot be performed in a reasonable amount of time. 1443 * https://github.com/paragonie/sodium_compat#help-sodium_compat-is-slow-how-can-i-make-it-fast 1444 */ 1445 if ( ! $sodium_compat_is_fast ) { 1446 return new WP_Error( 1447 'signature_verification_unsupported', 1448 sprintf( 1449 /* translators: %s: The filename of the package. */ 1450 __( 'The authenticity of %s could not be verified as signature verification is unavailable on this system.' ), 1451 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1452 ), 1453 array( 1454 'php' => PHP_VERSION, 1455 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1456 'polyfill_is_fast' => false, 1457 'max_execution_time' => ini_get( 'max_execution_time' ), 1458 ) 1459 ); 1460 } 1461 } 1462 1463 if ( ! $signatures ) { 1464 return new WP_Error( 1465 'signature_verification_no_signature', 1466 sprintf( 1467 /* translators: %s: The filename of the package. */ 1468 __( 'The authenticity of %s could not be verified as no signature was found.' ), 1469 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1470 ), 1471 array( 1472 'filename' => $filename_for_errors, 1473 ) 1474 ); 1475 } 1476 1477 $trusted_keys = wp_trusted_keys(); 1478 $file_hash = hash_file( 'sha384', $filename, true ); 1479 1480 mbstring_binary_safe_encoding(); 1481 1482 $skipped_key = 0; 1483 $skipped_signature = 0; 1484 1485 foreach ( (array) $signatures as $signature ) { 1486 $signature_raw = base64_decode( $signature ); 1487 1488 // Ensure only valid-length signatures are considered. 1489 if ( SODIUM_CRYPTO_SIGN_BYTES !== strlen( $signature_raw ) ) { 1490 ++$skipped_signature; 1491 continue; 1492 } 1493 1494 foreach ( (array) $trusted_keys as $key ) { 1495 $key_raw = base64_decode( $key ); 1496 1497 // Only pass valid public keys through. 1498 if ( SODIUM_CRYPTO_SIGN_PUBLICKEYBYTES !== strlen( $key_raw ) ) { 1499 ++$skipped_key; 1500 continue; 1501 } 1502 1503 if ( sodium_crypto_sign_verify_detached( $signature_raw, $file_hash, $key_raw ) ) { 1504 reset_mbstring_encoding(); 1505 return true; 1506 } 1507 } 1508 } 1509 1510 reset_mbstring_encoding(); 1511 1512 return new WP_Error( 1513 'signature_verification_failed', 1514 sprintf( 1515 /* translators: %s: The filename of the package. */ 1516 __( 'The authenticity of %s could not be verified.' ), 1517 '<span class="code">' . esc_html( $filename_for_errors ) . '</span>' 1518 ), 1519 // Error data helpful for debugging: 1520 array( 1521 'filename' => $filename_for_errors, 1522 'keys' => $trusted_keys, 1523 'signatures' => $signatures, 1524 'hash' => bin2hex( $file_hash ), 1525 'skipped_key' => $skipped_key, 1526 'skipped_sig' => $skipped_signature, 1527 'php' => PHP_VERSION, 1528 'sodium' => defined( 'SODIUM_LIBRARY_VERSION' ) ? SODIUM_LIBRARY_VERSION : ( defined( 'ParagonIE_Sodium_Compat::VERSION_STRING' ) ? ParagonIE_Sodium_Compat::VERSION_STRING : false ), 1529 ) 1530 ); 1531 } 1532 1533 /** 1534 * Retrieves the list of signing keys trusted by WordPress. 1535 * 1536 * @since 5.2.0 1537 * 1538 * @return string[] Array of base64-encoded signing keys. 1539 */ 1540 function wp_trusted_keys() { 1541 $trusted_keys = array(); 1542 1543 if ( time() < 1617235200 ) { 1544 // WordPress.org Key #1 - This key is only valid before April 1st, 2021. 1545 $trusted_keys[] = 'fRPyrxb/MvVLbdsYi+OOEv4xc+Eqpsj+kkAS6gNOkI0='; 1546 } 1547 1548 // TODO: Add key #2 with longer expiration. 1549 1550 /** 1551 * Filters the valid signing keys used to verify the contents of files. 1552 * 1553 * @since 5.2.0 1554 * 1555 * @param string[] $trusted_keys The trusted keys that may sign packages. 1556 */ 1557 return apply_filters( 'wp_trusted_keys', $trusted_keys ); 1558 } 1559 1560 /** 1561 * Determines whether the given file is a valid ZIP file. 1562 * 1563 * This function does not test to ensure that a file exists. Non-existent files 1564 * are not valid ZIPs, so those will also return false. 1565 * 1566 * @since 6.4.4 1567 * 1568 * @param string $file Full path to the ZIP file. 1569 * @return bool Whether the file is a valid ZIP file. 1570 */ 1571 function wp_zip_file_is_valid( $file ) { 1572 /** This filter is documented in wp-admin/includes/file.php */ 1573 if ( class_exists( 'ZipArchive', false ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) { 1574 $archive = new ZipArchive(); 1575 $archive_is_valid = $archive->open( $file, ZipArchive::CHECKCONS ); 1576 if ( true === $archive_is_valid ) { 1577 $archive->close(); 1578 return true; 1579 } 1580 } 1581 1582 // Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file. 1583 require_once ABSPATH . 'wp-admin/includes/class-pclzip.php'; 1584 1585 $archive = new PclZip( $file ); 1586 $archive_is_valid = is_array( $archive->properties() ); 1587 1588 return $archive_is_valid; 1589 } 1590 1591 /** 1592 * Unzips a specified ZIP file to a location on the filesystem via the WordPress 1593 * Filesystem Abstraction. 1594 * 1595 * Assumes that WP_Filesystem() has already been called and set up. Does not extract 1596 * a root-level __MACOSX directory, if present. 1597 * 1598 * Attempts to increase the PHP memory limit to 256M before uncompressing. However, 1599 * the most memory required shouldn't be much larger than the archive itself. 1600 * 1601 * @since 2.5.0 1602 * 1603 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1604 * 1605 * @param string $file Full path and filename of ZIP archive. 1606 * @param string $to Full path on the filesystem to extract archive to. 1607 * @return true|WP_Error True on success, WP_Error on failure. 1608 */ 1609 function unzip_file( $file, $to ) { 1610 global $wp_filesystem; 1611 1612 if ( ! $wp_filesystem || ! is_object( $wp_filesystem ) ) { 1613 return new WP_Error( 'fs_unavailable', __( 'Could not access filesystem.' ) ); 1614 } 1615 1616 // Unzip can use a lot of memory, but not this much hopefully. 1617 wp_raise_memory_limit( 'admin' ); 1618 1619 $needed_dirs = array(); 1620 $to = trailingslashit( $to ); 1621 1622 // Determine any parent directories needed (of the upgrade directory). 1623 if ( ! $wp_filesystem->is_dir( $to ) ) { // Only do parents if no children exist. 1624 $path = preg_split( '![/\\\]!', untrailingslashit( $to ) ); 1625 for ( $i = count( $path ); $i >= 0; $i-- ) { 1626 if ( empty( $path[ $i ] ) ) { 1627 continue; 1628 } 1629 1630 $dir = implode( '/', array_slice( $path, 0, $i + 1 ) ); 1631 if ( preg_match( '!^[a-z]:$!i', $dir ) ) { // Skip it if it looks like a Windows Drive letter. 1632 continue; 1633 } 1634 1635 if ( ! $wp_filesystem->is_dir( $dir ) ) { 1636 $needed_dirs[] = $dir; 1637 } else { 1638 break; // A folder exists, therefore we don't need to check the levels below this. 1639 } 1640 } 1641 } 1642 1643 /** 1644 * Filters whether to use ZipArchive to unzip archives. 1645 * 1646 * @since 3.0.0 1647 * 1648 * @param bool $ziparchive Whether to use ZipArchive. Default true. 1649 */ 1650 if ( class_exists( 'ZipArchive', false ) && apply_filters( 'unzip_file_use_ziparchive', true ) ) { 1651 $result = _unzip_file_ziparchive( $file, $to, $needed_dirs ); 1652 if ( true === $result ) { 1653 return $result; 1654 } elseif ( is_wp_error( $result ) ) { 1655 if ( 'incompatible_archive' !== $result->get_error_code() ) { 1656 return $result; 1657 } 1658 } 1659 } 1660 // Fall through to PclZip if ZipArchive is not available, or encountered an error opening the file. 1661 return _unzip_file_pclzip( $file, $to, $needed_dirs ); 1662 } 1663 1664 /** 1665 * Attempts to unzip an archive using the ZipArchive class. 1666 * 1667 * This function should not be called directly, use `unzip_file()` instead. 1668 * 1669 * Assumes that WP_Filesystem() has already been called and set up. 1670 * 1671 * @since 3.0.0 1672 * @access private 1673 * 1674 * @see unzip_file() 1675 * 1676 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1677 * 1678 * @param string $file Full path and filename of ZIP archive. 1679 * @param string $to Full path on the filesystem to extract archive to. 1680 * @param string[] $needed_dirs A partial list of required folders needed to be created. 1681 * @return true|WP_Error True on success, WP_Error on failure. 1682 */ 1683 function _unzip_file_ziparchive( $file, $to, $needed_dirs = array() ) { 1684 global $wp_filesystem; 1685 1686 $z = new ZipArchive(); 1687 1688 $zopen = $z->open( $file, ZIPARCHIVE::CHECKCONS ); 1689 1690 if ( true !== $zopen ) { 1691 return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), array( 'ziparchive_error' => $zopen ) ); 1692 } 1693 1694 $uncompressed_size = 0; 1695 1696 for ( $i = 0; $i < $z->numFiles; $i++ ) { 1697 $info = $z->statIndex( $i ); 1698 1699 if ( ! $info ) { 1700 $z->close(); 1701 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) ); 1702 } 1703 1704 if ( str_starts_with( $info['name'], '__MACOSX/' ) ) { // Skip the OS X-created __MACOSX directory. 1705 continue; 1706 } 1707 1708 // Don't extract invalid files: 1709 if ( 0 !== validate_file( $info['name'] ) ) { 1710 continue; 1711 } 1712 1713 $uncompressed_size += $info['size']; 1714 1715 $dirname = dirname( $info['name'] ); 1716 1717 if ( str_ends_with( $info['name'], '/' ) ) { 1718 // Directory. 1719 $needed_dirs[] = $to . untrailingslashit( $info['name'] ); 1720 } elseif ( '.' !== $dirname ) { 1721 // Path to a file. 1722 $needed_dirs[] = $to . untrailingslashit( $dirname ); 1723 } 1724 } 1725 1726 // Enough space to unzip the file and copy its contents, with a 10% buffer. 1727 $required_space = $uncompressed_size * 2.1; 1728 1729 /* 1730 * disk_free_space() could return false. Assume that any falsey value is an error. 1731 * A disk that has zero free bytes has bigger problems. 1732 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer. 1733 */ 1734 if ( wp_doing_cron() ) { 1735 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( WP_CONTENT_DIR ) : false; 1736 1737 if ( $available_space && ( $required_space > $available_space ) ) { 1738 $z->close(); 1739 return new WP_Error( 1740 'disk_full_unzip_file', 1741 __( 'Could not copy files. You may have run out of disk space.' ), 1742 compact( 'uncompressed_size', 'available_space' ) 1743 ); 1744 } 1745 } 1746 1747 $needed_dirs = array_unique( $needed_dirs ); 1748 1749 foreach ( $needed_dirs as $dir ) { 1750 // Check the parent folders of the folders all exist within the creation array. 1751 if ( untrailingslashit( $to ) === $dir ) { // Skip over the working directory, we know this exists (or will exist). 1752 continue; 1753 } 1754 1755 if ( ! str_contains( $dir, $to ) ) { // If the directory is not within the working directory, skip it. 1756 continue; 1757 } 1758 1759 $parent_folder = dirname( $dir ); 1760 1761 while ( ! empty( $parent_folder ) 1762 && untrailingslashit( $to ) !== $parent_folder 1763 && ! in_array( $parent_folder, $needed_dirs, true ) 1764 ) { 1765 $needed_dirs[] = $parent_folder; 1766 $parent_folder = dirname( $parent_folder ); 1767 } 1768 } 1769 1770 asort( $needed_dirs ); 1771 1772 // Create those directories if need be: 1773 foreach ( $needed_dirs as $_dir ) { 1774 // Only check to see if the Dir exists upon creation failure. Less I/O this way. 1775 if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) { 1776 $z->close(); 1777 return new WP_Error( 'mkdir_failed_ziparchive', __( 'Could not create directory.' ), $_dir ); 1778 } 1779 } 1780 1781 /** 1782 * Filters archive unzipping to override with a custom process. 1783 * 1784 * @since 6.4.0 1785 * 1786 * @param null|true|WP_Error $result The result of the override. True on success, otherwise WP Error. Default null. 1787 * @param string $file Full path and filename of ZIP archive. 1788 * @param string $to Full path on the filesystem to extract archive to. 1789 * @param string[] $needed_dirs A full list of required folders that need to be created. 1790 * @param float $required_space The space required to unzip the file and copy its contents, with a 10% buffer. 1791 */ 1792 $pre = apply_filters( 'pre_unzip_file', null, $file, $to, $needed_dirs, $required_space ); 1793 1794 if ( null !== $pre ) { 1795 // Ensure the ZIP file archive has been closed. 1796 $z->close(); 1797 1798 return $pre; 1799 } 1800 1801 for ( $i = 0; $i < $z->numFiles; $i++ ) { 1802 $info = $z->statIndex( $i ); 1803 1804 if ( ! $info ) { 1805 $z->close(); 1806 return new WP_Error( 'stat_failed_ziparchive', __( 'Could not retrieve file from archive.' ) ); 1807 } 1808 1809 if ( str_ends_with( $info['name'], '/' ) ) { // Directory. 1810 continue; 1811 } 1812 1813 if ( str_starts_with( $info['name'], '__MACOSX/' ) ) { // Don't extract the OS X-created __MACOSX directory files. 1814 continue; 1815 } 1816 1817 // Don't extract invalid files: 1818 if ( 0 !== validate_file( $info['name'] ) ) { 1819 continue; 1820 } 1821 1822 $contents = $z->getFromIndex( $i ); 1823 1824 if ( false === $contents ) { 1825 $z->close(); 1826 return new WP_Error( 'extract_failed_ziparchive', __( 'Could not extract file from archive.' ), $info['name'] ); 1827 } 1828 1829 if ( ! $wp_filesystem->put_contents( $to . $info['name'], $contents, FS_CHMOD_FILE ) ) { 1830 $z->close(); 1831 return new WP_Error( 'copy_failed_ziparchive', __( 'Could not copy file.' ), $info['name'] ); 1832 } 1833 } 1834 1835 $z->close(); 1836 1837 /** 1838 * Filters the result of unzipping an archive. 1839 * 1840 * @since 6.4.0 1841 * 1842 * @param true|WP_Error $result The result of unzipping the archive. True on success, otherwise WP_Error. Default true. 1843 * @param string $file Full path and filename of ZIP archive. 1844 * @param string $to Full path on the filesystem the archive was extracted to. 1845 * @param string[] $needed_dirs A full list of required folders that were created. 1846 * @param float $required_space The space required to unzip the file and copy its contents, with a 10% buffer. 1847 */ 1848 $result = apply_filters( 'unzip_file', true, $file, $to, $needed_dirs, $required_space ); 1849 1850 unset( $needed_dirs ); 1851 1852 return $result; 1853 } 1854 1855 /** 1856 * Attempts to unzip an archive using the PclZip library. 1857 * 1858 * This function should not be called directly, use `unzip_file()` instead. 1859 * 1860 * Assumes that WP_Filesystem() has already been called and set up. 1861 * 1862 * @since 3.0.0 1863 * @access private 1864 * 1865 * @see unzip_file() 1866 * 1867 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 1868 * 1869 * @param string $file Full path and filename of ZIP archive. 1870 * @param string $to Full path on the filesystem to extract archive to. 1871 * @param string[] $needed_dirs A partial list of required folders needed to be created. 1872 * @return true|WP_Error True on success, WP_Error on failure. 1873 */ 1874 function _unzip_file_pclzip( $file, $to, $needed_dirs = array() ) { 1875 global $wp_filesystem; 1876 1877 mbstring_binary_safe_encoding(); 1878 1879 require_once ABSPATH . 'wp-admin/includes/class-pclzip.php'; 1880 1881 $archive = new PclZip( $file ); 1882 1883 $archive_files = $archive->extract( PCLZIP_OPT_EXTRACT_AS_STRING ); 1884 1885 reset_mbstring_encoding(); 1886 1887 // Is the archive valid? 1888 if ( ! is_array( $archive_files ) ) { 1889 return new WP_Error( 'incompatible_archive', __( 'Incompatible Archive.' ), $archive->errorInfo( true ) ); 1890 } 1891 1892 if ( 0 === count( $archive_files ) ) { 1893 return new WP_Error( 'empty_archive_pclzip', __( 'Empty archive.' ) ); 1894 } 1895 1896 $uncompressed_size = 0; 1897 1898 // Determine any children directories needed (From within the archive). 1899 foreach ( $archive_files as $file ) { 1900 if ( str_starts_with( $file['filename'], '__MACOSX/' ) ) { // Skip the OS X-created __MACOSX directory. 1901 continue; 1902 } 1903 1904 $uncompressed_size += $file['size']; 1905 1906 $needed_dirs[] = $to . untrailingslashit( $file['folder'] ? $file['filename'] : dirname( $file['filename'] ) ); 1907 } 1908 1909 // Enough space to unzip the file and copy its contents, with a 10% buffer. 1910 $required_space = $uncompressed_size * 2.1; 1911 1912 /* 1913 * disk_free_space() could return false. Assume that any falsey value is an error. 1914 * A disk that has zero free bytes has bigger problems. 1915 * Require we have enough space to unzip the file and copy its contents, with a 10% buffer. 1916 */ 1917 if ( wp_doing_cron() ) { 1918 $available_space = function_exists( 'disk_free_space' ) ? @disk_free_space( WP_CONTENT_DIR ) : false; 1919 1920 if ( $available_space && ( $required_space > $available_space ) ) { 1921 return new WP_Error( 1922 'disk_full_unzip_file', 1923 __( 'Could not copy files. You may have run out of disk space.' ), 1924 compact( 'uncompressed_size', 'available_space' ) 1925 ); 1926 } 1927 } 1928 1929 $needed_dirs = array_unique( $needed_dirs ); 1930 1931 foreach ( $needed_dirs as $dir ) { 1932 // Check the parent folders of the folders all exist within the creation array. 1933 if ( untrailingslashit( $to ) === $dir ) { // Skip over the working directory, we know this exists (or will exist). 1934 continue; 1935 } 1936 1937 if ( ! str_contains( $dir, $to ) ) { // If the directory is not within the working directory, skip it. 1938 continue; 1939 } 1940 1941 $parent_folder = dirname( $dir ); 1942 1943 while ( ! empty( $parent_folder ) 1944 && untrailingslashit( $to ) !== $parent_folder 1945 && ! in_array( $parent_folder, $needed_dirs, true ) 1946 ) { 1947 $needed_dirs[] = $parent_folder; 1948 $parent_folder = dirname( $parent_folder ); 1949 } 1950 } 1951 1952 asort( $needed_dirs ); 1953 1954 // Create those directories if need be: 1955 foreach ( $needed_dirs as $_dir ) { 1956 // Only check to see if the dir exists upon creation failure. Less I/O this way. 1957 if ( ! $wp_filesystem->mkdir( $_dir, FS_CHMOD_DIR ) && ! $wp_filesystem->is_dir( $_dir ) ) { 1958 return new WP_Error( 'mkdir_failed_pclzip', __( 'Could not create directory.' ), $_dir ); 1959 } 1960 } 1961 1962 /** This filter is documented in src/wp-admin/includes/file.php */ 1963 $pre = apply_filters( 'pre_unzip_file', null, $file, $to, $needed_dirs, $required_space ); 1964 1965 if ( null !== $pre ) { 1966 return $pre; 1967 } 1968 1969 // Extract the files from the zip. 1970 foreach ( $archive_files as $file ) { 1971 if ( $file['folder'] ) { 1972 continue; 1973 } 1974 1975 if ( str_starts_with( $file['filename'], '__MACOSX/' ) ) { // Don't extract the OS X-created __MACOSX directory files. 1976 continue; 1977 } 1978 1979 // Don't extract invalid files: 1980 if ( 0 !== validate_file( $file['filename'] ) ) { 1981 continue; 1982 } 1983 1984 if ( ! $wp_filesystem->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE ) ) { 1985 return new WP_Error( 'copy_failed_pclzip', __( 'Could not copy file.' ), $file['filename'] ); 1986 } 1987 } 1988 1989 /** This action is documented in src/wp-admin/includes/file.php */ 1990 $result = apply_filters( 'unzip_file', true, $file, $to, $needed_dirs, $required_space ); 1991 1992 unset( $needed_dirs ); 1993 1994 return $result; 1995 } 1996 1997 /** 1998 * Copies a directory from one location to another via the WordPress Filesystem 1999 * Abstraction. 2000 * 2001 * Assumes that WP_Filesystem() has already been called and setup. 2002 * 2003 * @since 2.5.0 2004 * 2005 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 2006 * 2007 * @param string $from Source directory. 2008 * @param string $to Destination directory. 2009 * @param string[] $skip_list An array of files/folders to skip copying. 2010 * @return true|WP_Error True on success, WP_Error on failure. 2011 */ 2012 function copy_dir( $from, $to, $skip_list = array() ) { 2013 global $wp_filesystem; 2014 2015 $dirlist = $wp_filesystem->dirlist( $from ); 2016 2017 if ( false === $dirlist ) { 2018 return new WP_Error( 'dirlist_failed_copy_dir', __( 'Directory listing failed.' ), basename( $from ) ); 2019 } 2020 2021 $from = trailingslashit( $from ); 2022 $to = trailingslashit( $to ); 2023 2024 if ( ! $wp_filesystem->exists( $to ) && ! $wp_filesystem->mkdir( $to ) ) { 2025 return new WP_Error( 2026 'mkdir_destination_failed_copy_dir', 2027 __( 'Could not create the destination directory.' ), 2028 basename( $to ) 2029 ); 2030 } 2031 2032 foreach ( (array) $dirlist as $filename => $fileinfo ) { 2033 if ( in_array( $filename, $skip_list, true ) ) { 2034 continue; 2035 } 2036 2037 if ( 'f' === $fileinfo['type'] ) { 2038 if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { 2039 // If copy failed, chmod file to 0644 and try again. 2040 $wp_filesystem->chmod( $to . $filename, FS_CHMOD_FILE ); 2041 2042 if ( ! $wp_filesystem->copy( $from . $filename, $to . $filename, true, FS_CHMOD_FILE ) ) { 2043 return new WP_Error( 'copy_failed_copy_dir', __( 'Could not copy file.' ), $to . $filename ); 2044 } 2045 } 2046 2047 wp_opcache_invalidate( $to . $filename ); 2048 } elseif ( 'd' === $fileinfo['type'] ) { 2049 if ( ! $wp_filesystem->is_dir( $to . $filename ) ) { 2050 if ( ! $wp_filesystem->mkdir( $to . $filename, FS_CHMOD_DIR ) ) { 2051 return new WP_Error( 'mkdir_failed_copy_dir', __( 'Could not create directory.' ), $to . $filename ); 2052 } 2053 } 2054 2055 // Generate the $sub_skip_list for the subdirectory as a sub-set of the existing $skip_list. 2056 $sub_skip_list = array(); 2057 2058 foreach ( $skip_list as $skip_item ) { 2059 if ( str_starts_with( $skip_item, $filename . '/' ) ) { 2060 $sub_skip_list[] = preg_replace( '!^' . preg_quote( $filename, '!' ) . '/!i', '', $skip_item ); 2061 } 2062 } 2063 2064 $result = copy_dir( $from . $filename, $to . $filename, $sub_skip_list ); 2065 2066 if ( is_wp_error( $result ) ) { 2067 return $result; 2068 } 2069 } 2070 } 2071 2072 return true; 2073 } 2074 2075 /** 2076 * Moves a directory from one location to another. 2077 * 2078 * Recursively invalidates OPcache on success. 2079 * 2080 * If the renaming failed, falls back to copy_dir(). 2081 * 2082 * Assumes that WP_Filesystem() has already been called and setup. 2083 * 2084 * This function is not designed to merge directories, copy_dir() should be used instead. 2085 * 2086 * @since 6.2.0 2087 * 2088 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 2089 * 2090 * @param string $from Source directory. 2091 * @param string $to Destination directory. 2092 * @param bool $overwrite Optional. Whether to overwrite the destination directory if it exists. 2093 * Default false. 2094 * @return true|WP_Error True on success, WP_Error on failure. 2095 */ 2096 function move_dir( $from, $to, $overwrite = false ) { 2097 global $wp_filesystem; 2098 2099 if ( trailingslashit( strtolower( $from ) ) === trailingslashit( strtolower( $to ) ) ) { 2100 return new WP_Error( 'source_destination_same_move_dir', __( 'The source and destination are the same.' ) ); 2101 } 2102 2103 if ( $wp_filesystem->exists( $to ) ) { 2104 if ( ! $overwrite ) { 2105 return new WP_Error( 'destination_already_exists_move_dir', __( 'The destination folder already exists.' ), $to ); 2106 } elseif ( ! $wp_filesystem->delete( $to, true ) ) { 2107 // Can't overwrite if the destination couldn't be deleted. 2108 return new WP_Error( 'destination_not_deleted_move_dir', __( 'The destination directory already exists and could not be removed.' ) ); 2109 } 2110 } 2111 2112 if ( $wp_filesystem->move( $from, $to ) ) { 2113 /* 2114 * When using an environment with shared folders, 2115 * there is a delay in updating the filesystem's cache. 2116 * 2117 * This is a known issue in environments with a VirtualBox provider. 2118 * 2119 * A 200ms delay gives time for the filesystem to update its cache, 2120 * prevents "Operation not permitted", and "No such file or directory" warnings. 2121 * 2122 * This delay is used in other projects, including Composer. 2123 * @link https://github.com/composer/composer/blob/2.5.1/src/Composer/Util/Platform.php#L228-L233 2124 */ 2125 usleep( 200000 ); 2126 wp_opcache_invalidate_directory( $to ); 2127 2128 return true; 2129 } 2130 2131 // Fall back to a recursive copy. 2132 if ( ! $wp_filesystem->is_dir( $to ) ) { 2133 if ( ! $wp_filesystem->mkdir( $to, FS_CHMOD_DIR ) ) { 2134 return new WP_Error( 'mkdir_failed_move_dir', __( 'Could not create directory.' ), $to ); 2135 } 2136 } 2137 2138 $result = copy_dir( $from, $to, array( basename( $to ) ) ); 2139 2140 // Clear the source directory. 2141 if ( true === $result ) { 2142 $wp_filesystem->delete( $from, true ); 2143 } 2144 2145 return $result; 2146 } 2147 2148 /** 2149 * Initializes and connects the WordPress Filesystem Abstraction classes. 2150 * 2151 * This function will include the chosen transport and attempt connecting. 2152 * 2153 * Plugins may add extra transports, And force WordPress to use them by returning 2154 * the filename via the {@see 'filesystem_method_file'} filter. 2155 * 2156 * @since 2.5.0 2157 * 2158 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 2159 * 2160 * @param array|false $args Optional. Connection args, These are passed 2161 * directly to the `WP_Filesystem_*()` classes. 2162 * Default false. 2163 * @param string|false $context Optional. Context for get_filesystem_method(). 2164 * Default false. 2165 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 2166 * Default false. 2167 * @return bool|null True on success, false on failure, 2168 * null if the filesystem method class file does not exist. 2169 */ 2170 function WP_Filesystem( $args = false, $context = false, $allow_relaxed_file_ownership = false ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid 2171 global $wp_filesystem; 2172 2173 require_once ABSPATH . 'wp-admin/includes/class-wp-filesystem-base.php'; 2174 2175 $method = get_filesystem_method( $args, $context, $allow_relaxed_file_ownership ); 2176 2177 if ( ! $method ) { 2178 return false; 2179 } 2180 2181 if ( ! class_exists( "WP_Filesystem_$method" ) ) { 2182 2183 /** 2184 * Filters the path for a specific filesystem method class file. 2185 * 2186 * @since 2.6.0 2187 * 2188 * @see get_filesystem_method() 2189 * 2190 * @param string $path Path to the specific filesystem method class file. 2191 * @param string $method The filesystem method to use. 2192 */ 2193 $abstraction_file = apply_filters( 'filesystem_method_file', ABSPATH . 'wp-admin/includes/class-wp-filesystem-' . $method . '.php', $method ); 2194 2195 if ( ! file_exists( $abstraction_file ) ) { 2196 return; 2197 } 2198 2199 require_once $abstraction_file; 2200 } 2201 $method = "WP_Filesystem_$method"; 2202 2203 $wp_filesystem = new $method( $args ); 2204 2205 /* 2206 * Define the timeouts for the connections. Only available after the constructor is called 2207 * to allow for per-transport overriding of the default. 2208 */ 2209 if ( ! defined( 'FS_CONNECT_TIMEOUT' ) ) { 2210 define( 'FS_CONNECT_TIMEOUT', 30 ); // 30 seconds. 2211 } 2212 if ( ! defined( 'FS_TIMEOUT' ) ) { 2213 define( 'FS_TIMEOUT', 30 ); // 30 seconds. 2214 } 2215 2216 if ( is_wp_error( $wp_filesystem->errors ) && $wp_filesystem->errors->has_errors() ) { 2217 return false; 2218 } 2219 2220 if ( ! $wp_filesystem->connect() ) { 2221 return false; // There was an error connecting to the server. 2222 } 2223 2224 // Set the permission constants if not already set. 2225 if ( ! defined( 'FS_CHMOD_DIR' ) ) { 2226 define( 'FS_CHMOD_DIR', ( fileperms( ABSPATH ) & 0777 | 0755 ) ); 2227 } 2228 if ( ! defined( 'FS_CHMOD_FILE' ) ) { 2229 define( 'FS_CHMOD_FILE', ( fileperms( ABSPATH . 'index.php' ) & 0777 | 0644 ) ); 2230 } 2231 2232 return true; 2233 } 2234 2235 /** 2236 * Determines which method to use for reading, writing, modifying, or deleting 2237 * files on the filesystem. 2238 * 2239 * The priority of the transports are: Direct, SSH2, FTP PHP Extension, FTP Sockets 2240 * (Via Sockets class, or `fsockopen()`). Valid values for these are: 'direct', 'ssh2', 2241 * 'ftpext' or 'ftpsockets'. 2242 * 2243 * The return value can be overridden by defining the `FS_METHOD` constant in `wp-config.php`, 2244 * or filtering via {@see 'filesystem_method'}. 2245 * 2246 * @link https://developer.wordpress.org/advanced-administration/wordpress/wp-config/#wordpress-upgrade-constants 2247 * 2248 * Plugins may define a custom transport handler, See WP_Filesystem(). 2249 * 2250 * @since 2.5.0 2251 * 2252 * @global callable $_wp_filesystem_direct_method 2253 * 2254 * @param array $args Optional. Connection details. Default empty array. 2255 * @param string $context Optional. Full path to the directory that is tested 2256 * for being writable. Default empty. 2257 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 2258 * Default false. 2259 * @return string The transport to use, see description for valid return values. 2260 */ 2261 function get_filesystem_method( $args = array(), $context = '', $allow_relaxed_file_ownership = false ) { 2262 // Please ensure that this is either 'direct', 'ssh2', 'ftpext', or 'ftpsockets'. 2263 $method = defined( 'FS_METHOD' ) ? FS_METHOD : false; 2264 2265 if ( ! $context ) { 2266 $context = WP_CONTENT_DIR; 2267 } 2268 2269 // If the directory doesn't exist (wp-content/languages) then use the parent directory as we'll create it. 2270 if ( WP_LANG_DIR === $context && ! is_dir( $context ) ) { 2271 $context = dirname( $context ); 2272 } 2273 2274 $context = trailingslashit( $context ); 2275 2276 if ( ! $method ) { 2277 2278 $temp_file_name = $context . 'temp-write-test-' . str_replace( '.', '-', uniqid( '', true ) ); 2279 $temp_handle = @fopen( $temp_file_name, 'w' ); 2280 if ( $temp_handle ) { 2281 2282 // Attempt to determine the file owner of the WordPress files, and that of newly created files. 2283 $wp_file_owner = false; 2284 $temp_file_owner = false; 2285 if ( function_exists( 'fileowner' ) ) { 2286 $wp_file_owner = @fileowner( __FILE__ ); 2287 $temp_file_owner = @fileowner( $temp_file_name ); 2288 } 2289 2290 if ( false !== $wp_file_owner && $wp_file_owner === $temp_file_owner ) { 2291 /* 2292 * WordPress is creating files as the same owner as the WordPress files, 2293 * this means it's safe to modify & create new files via PHP. 2294 */ 2295 $method = 'direct'; 2296 $GLOBALS['_wp_filesystem_direct_method'] = 'file_owner'; 2297 } elseif ( $allow_relaxed_file_ownership ) { 2298 /* 2299 * The $context directory is writable, and $allow_relaxed_file_ownership is set, 2300 * this means we can modify files safely in this directory. 2301 * This mode doesn't create new files, only alter existing ones. 2302 */ 2303 $method = 'direct'; 2304 $GLOBALS['_wp_filesystem_direct_method'] = 'relaxed_ownership'; 2305 } 2306 2307 fclose( $temp_handle ); 2308 @unlink( $temp_file_name ); 2309 } 2310 } 2311 2312 if ( ! $method && isset( $args['connection_type'] ) && 'ssh' === $args['connection_type'] && extension_loaded( 'ssh2' ) ) { 2313 $method = 'ssh2'; 2314 } 2315 if ( ! $method && extension_loaded( 'ftp' ) ) { 2316 $method = 'ftpext'; 2317 } 2318 if ( ! $method && ( extension_loaded( 'sockets' ) || function_exists( 'fsockopen' ) ) ) { 2319 $method = 'ftpsockets'; // Sockets: Socket extension; PHP Mode: FSockopen / fwrite / fread. 2320 } 2321 2322 /** 2323 * Filters the filesystem method to use. 2324 * 2325 * @since 2.6.0 2326 * 2327 * @param string $method Filesystem method to return. 2328 * @param array $args An array of connection details for the method. 2329 * @param string $context Full path to the directory that is tested for being writable. 2330 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable. 2331 */ 2332 return apply_filters( 'filesystem_method', $method, $args, $context, $allow_relaxed_file_ownership ); 2333 } 2334 2335 /** 2336 * Displays a form to the user to request for their FTP/SSH details in order 2337 * to connect to the filesystem. 2338 * 2339 * All chosen/entered details are saved, excluding the password. 2340 * 2341 * Hostnames may be in the form of hostname:portnumber (eg: wordpress.org:2467) 2342 * to specify an alternate FTP/SSH port. 2343 * 2344 * Plugins may override this form by returning true|false via the {@see 'request_filesystem_credentials'} filter. 2345 * 2346 * @since 2.5.0 2347 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2348 * 2349 * @global string $pagenow The filename of the current screen. 2350 * 2351 * @param string $form_post The URL to post the form to. 2352 * @param string $type Optional. Chosen type of filesystem. Default empty. 2353 * @param bool|WP_Error $error Optional. Whether the current request has failed 2354 * to connect, or an error object. Default false. 2355 * @param string $context Optional. Full path to the directory that is tested 2356 * for being writable. Default empty. 2357 * @param array $extra_fields Optional. Extra `POST` fields to be checked 2358 * for inclusion in the post. Default null. 2359 * @param bool $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. 2360 * Default false. 2361 * @return bool|array True if no filesystem credentials are required, 2362 * false if they are required but have not been provided, 2363 * array of credentials if they are required and have been provided. 2364 */ 2365 function request_filesystem_credentials( $form_post, $type = '', $error = false, $context = '', $extra_fields = null, $allow_relaxed_file_ownership = false ) { 2366 global $pagenow; 2367 2368 /** 2369 * Filters the filesystem credentials. 2370 * 2371 * Returning anything other than an empty string will effectively short-circuit 2372 * output of the filesystem credentials form, returning that value instead. 2373 * 2374 * A filter should return true if no filesystem credentials are required, false if they are required but have not been 2375 * provided, or an array of credentials if they are required and have been provided. 2376 * 2377 * @since 2.5.0 2378 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2379 * 2380 * @param mixed $credentials Credentials to return instead. Default empty string. 2381 * @param string $form_post The URL to post the form to. 2382 * @param string $type Chosen type of filesystem. 2383 * @param bool|WP_Error $error Whether the current request has failed to connect, 2384 * or an error object. 2385 * @param string $context Full path to the directory that is tested for 2386 * being writable. 2387 * @param array $extra_fields Extra POST fields. 2388 * @param bool $allow_relaxed_file_ownership Whether to allow Group/World writable. 2389 */ 2390 $req_cred = apply_filters( 'request_filesystem_credentials', '', $form_post, $type, $error, $context, $extra_fields, $allow_relaxed_file_ownership ); 2391 2392 if ( '' !== $req_cred ) { 2393 return $req_cred; 2394 } 2395 2396 if ( empty( $type ) ) { 2397 $type = get_filesystem_method( array(), $context, $allow_relaxed_file_ownership ); 2398 } 2399 2400 if ( 'direct' === $type ) { 2401 return true; 2402 } 2403 2404 if ( is_null( $extra_fields ) ) { 2405 $extra_fields = array( 'version', 'locale' ); 2406 } 2407 2408 $credentials = get_option( 2409 'ftp_credentials', 2410 array( 2411 'hostname' => '', 2412 'username' => '', 2413 ) 2414 ); 2415 2416 $submitted_form = wp_unslash( $_POST ); 2417 2418 // Verify nonce, or unset submitted form field values on failure. 2419 if ( ! isset( $_POST['_fs_nonce'] ) || ! wp_verify_nonce( $_POST['_fs_nonce'], 'filesystem-credentials' ) ) { 2420 unset( 2421 $submitted_form['hostname'], 2422 $submitted_form['username'], 2423 $submitted_form['password'], 2424 $submitted_form['public_key'], 2425 $submitted_form['private_key'], 2426 $submitted_form['connection_type'] 2427 ); 2428 } 2429 2430 $ftp_constants = array( 2431 'hostname' => 'FTP_HOST', 2432 'username' => 'FTP_USER', 2433 'password' => 'FTP_PASS', 2434 'public_key' => 'FTP_PUBKEY', 2435 'private_key' => 'FTP_PRIKEY', 2436 ); 2437 2438 /* 2439 * If defined, set it to that. Else, if POST'd, set it to that. If not, set it to an empty string. 2440 * Otherwise, keep it as it previously was (saved details in option). 2441 */ 2442 foreach ( $ftp_constants as $key => $constant ) { 2443 if ( defined( $constant ) ) { 2444 $credentials[ $key ] = constant( $constant ); 2445 } elseif ( ! empty( $submitted_form[ $key ] ) ) { 2446 $credentials[ $key ] = $submitted_form[ $key ]; 2447 } elseif ( ! isset( $credentials[ $key ] ) ) { 2448 $credentials[ $key ] = ''; 2449 } 2450 } 2451 2452 // Sanitize the hostname, some people might pass in odd data. 2453 $credentials['hostname'] = preg_replace( '|\w+://|', '', $credentials['hostname'] ); // Strip any schemes off. 2454 2455 if ( strpos( $credentials['hostname'], ':' ) ) { 2456 list( $credentials['hostname'], $credentials['port'] ) = explode( ':', $credentials['hostname'], 2 ); 2457 if ( ! is_numeric( $credentials['port'] ) ) { 2458 unset( $credentials['port'] ); 2459 } 2460 } else { 2461 unset( $credentials['port'] ); 2462 } 2463 2464 if ( ( defined( 'FTP_SSH' ) && FTP_SSH ) || ( defined( 'FS_METHOD' ) && 'ssh2' === FS_METHOD ) ) { 2465 $credentials['connection_type'] = 'ssh'; 2466 } elseif ( ( defined( 'FTP_SSL' ) && FTP_SSL ) && 'ftpext' === $type ) { // Only the FTP Extension understands SSL. 2467 $credentials['connection_type'] = 'ftps'; 2468 } elseif ( ! empty( $submitted_form['connection_type'] ) ) { 2469 $credentials['connection_type'] = $submitted_form['connection_type']; 2470 } elseif ( ! isset( $credentials['connection_type'] ) ) { // All else fails (and it's not defaulted to something else saved), default to FTP. 2471 $credentials['connection_type'] = 'ftp'; 2472 } 2473 2474 if ( ! $error 2475 && ( ! empty( $credentials['hostname'] ) && ! empty( $credentials['username'] ) && ! empty( $credentials['password'] ) 2476 || 'ssh' === $credentials['connection_type'] && ! empty( $credentials['public_key'] ) && ! empty( $credentials['private_key'] ) 2477 ) 2478 ) { 2479 $stored_credentials = $credentials; 2480 2481 if ( ! empty( $stored_credentials['port'] ) ) { // Save port as part of hostname to simplify above code. 2482 $stored_credentials['hostname'] .= ':' . $stored_credentials['port']; 2483 } 2484 2485 unset( 2486 $stored_credentials['password'], 2487 $stored_credentials['port'], 2488 $stored_credentials['private_key'], 2489 $stored_credentials['public_key'] 2490 ); 2491 2492 if ( ! wp_installing() ) { 2493 update_option( 'ftp_credentials', $stored_credentials, false ); 2494 } 2495 2496 return $credentials; 2497 } 2498 2499 $hostname = isset( $credentials['hostname'] ) ? $credentials['hostname'] : ''; 2500 $username = isset( $credentials['username'] ) ? $credentials['username'] : ''; 2501 $public_key = isset( $credentials['public_key'] ) ? $credentials['public_key'] : ''; 2502 $private_key = isset( $credentials['private_key'] ) ? $credentials['private_key'] : ''; 2503 $port = isset( $credentials['port'] ) ? $credentials['port'] : ''; 2504 $connection_type = isset( $credentials['connection_type'] ) ? $credentials['connection_type'] : ''; 2505 2506 if ( $error ) { 2507 $error_string = __( '<strong>Error:</strong> Could not connect to the server. Please verify the settings are correct.' ); 2508 if ( is_wp_error( $error ) ) { 2509 $error_string = esc_html( $error->get_error_message() ); 2510 } 2511 wp_admin_notice( 2512 $error_string, 2513 array( 2514 'id' => 'message', 2515 'additional_classes' => array( 'error' ), 2516 ) 2517 ); 2518 } 2519 2520 $types = array(); 2521 if ( extension_loaded( 'ftp' ) || extension_loaded( 'sockets' ) || function_exists( 'fsockopen' ) ) { 2522 $types['ftp'] = __( 'FTP' ); 2523 } 2524 if ( extension_loaded( 'ftp' ) ) { // Only this supports FTPS. 2525 $types['ftps'] = __( 'FTPS (SSL)' ); 2526 } 2527 if ( extension_loaded( 'ssh2' ) ) { 2528 $types['ssh'] = __( 'SSH2' ); 2529 } 2530 2531 /** 2532 * Filters the connection types to output to the filesystem credentials form. 2533 * 2534 * @since 2.9.0 2535 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string. 2536 * 2537 * @param string[] $types Types of connections. 2538 * @param array $credentials Credentials to connect with. 2539 * @param string $type Chosen filesystem method. 2540 * @param bool|WP_Error $error Whether the current request has failed to connect, 2541 * or an error object. 2542 * @param string $context Full path to the directory that is tested for being writable. 2543 */ 2544 $types = apply_filters( 'fs_ftp_connection_types', $types, $credentials, $type, $error, $context ); 2545 ?> 2546 <form action="<?php echo esc_url( $form_post ); ?>" method="post"> 2547 <div id="request-filesystem-credentials-form" class="request-filesystem-credentials-form"> 2548 <?php 2549 // Print a H1 heading in the FTP credentials modal dialog, default is a H2. 2550 $heading_tag = 'h2'; 2551 if ( 'plugins.php' === $pagenow || 'plugin-install.php' === $pagenow ) { 2552 $heading_tag = 'h1'; 2553 } 2554 echo "<$heading_tag id='request-filesystem-credentials-title'>" . __( 'Connection Information' ) . "</$heading_tag>"; 2555 ?> 2556 <p id="request-filesystem-credentials-desc"> 2557 <?php 2558 $label_user = __( 'Username' ); 2559 $label_pass = __( 'Password' ); 2560 _e( 'To perform the requested action, WordPress needs to access your web server.' ); 2561 echo ' '; 2562 if ( ( isset( $types['ftp'] ) || isset( $types['ftps'] ) ) ) { 2563 if ( isset( $types['ssh'] ) ) { 2564 _e( 'Please enter your FTP or SSH credentials to proceed.' ); 2565 $label_user = __( 'FTP/SSH Username' ); 2566 $label_pass = __( 'FTP/SSH Password' ); 2567 } else { 2568 _e( 'Please enter your FTP credentials to proceed.' ); 2569 $label_user = __( 'FTP Username' ); 2570 $label_pass = __( 'FTP Password' ); 2571 } 2572 echo ' '; 2573 } 2574 _e( 'If you do not remember your credentials, you should contact your web host.' ); 2575 2576 $hostname_value = esc_attr( $hostname ); 2577 if ( ! empty( $port ) ) { 2578 $hostname_value .= ":$port"; 2579 } 2580 2581 $password_value = ''; 2582 if ( defined( 'FTP_PASS' ) ) { 2583 $password_value = '*****'; 2584 } 2585 ?> 2586 </p> 2587 <label for="hostname"> 2588 <span class="field-title"><?php _e( 'Hostname' ); ?></span> 2589 <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' ) ); ?> /> 2590 </label> 2591 <div class="ftp-username"> 2592 <label for="username"> 2593 <span class="field-title"><?php echo $label_user; ?></span> 2594 <input name="username" type="text" id="username" value="<?php echo esc_attr( $username ); ?>"<?php disabled( defined( 'FTP_USER' ) ); ?> /> 2595 </label> 2596 </div> 2597 <div class="ftp-password"> 2598 <label for="password"> 2599 <span class="field-title"><?php echo $label_pass; ?></span> 2600 <input name="password" type="password" id="password" value="<?php echo $password_value; ?>"<?php disabled( defined( 'FTP_PASS' ) ); ?> spellcheck="false" /> 2601 <?php 2602 if ( ! defined( 'FTP_PASS' ) ) { 2603 _e( 'This password will not be stored on the server.' ); 2604 } 2605 ?> 2606 </label> 2607 </div> 2608 <fieldset> 2609 <legend><?php _e( 'Connection Type' ); ?></legend> 2610 <?php 2611 $disabled = disabled( ( defined( 'FTP_SSL' ) && FTP_SSL ) || ( defined( 'FTP_SSH' ) && FTP_SSH ), true, false ); 2612 foreach ( $types as $name => $text ) : 2613 ?> 2614 <label for="<?php echo esc_attr( $name ); ?>"> 2615 <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; ?> /> 2616 <?php echo $text; ?> 2617 </label> 2618 <?php 2619 endforeach; 2620 ?> 2621 </fieldset> 2622 <?php 2623 if ( isset( $types['ssh'] ) ) { 2624 $hidden_class = ''; 2625 if ( 'ssh' !== $connection_type || empty( $connection_type ) ) { 2626 $hidden_class = ' class="hidden"'; 2627 } 2628 ?> 2629 <fieldset id="ssh-keys"<?php echo $hidden_class; ?>> 2630 <legend><?php _e( 'Authentication Keys' ); ?></legend> 2631 <label for="public_key"> 2632 <span class="field-title"><?php _e( 'Public Key:' ); ?></span> 2633 <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' ) ); ?> /> 2634 </label> 2635 <label for="private_key"> 2636 <span class="field-title"><?php _e( 'Private Key:' ); ?></span> 2637 <input name="private_key" type="text" id="private_key" value="<?php echo esc_attr( $private_key ); ?>"<?php disabled( defined( 'FTP_PRIKEY' ) ); ?> /> 2638 </label> 2639 <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> 2640 </fieldset> 2641 <?php 2642 } 2643 2644 foreach ( (array) $extra_fields as $field ) { 2645 if ( isset( $submitted_form[ $field ] ) ) { 2646 echo '<input type="hidden" name="' . esc_attr( $field ) . '" value="' . esc_attr( $submitted_form[ $field ] ) . '" />'; 2647 } 2648 } 2649 2650 /* 2651 * Make sure the `submit_button()` function is available during the REST API call 2652 * from WP_Site_Health_Auto_Updates::test_check_wp_filesystem_method(). 2653 */ 2654 if ( ! function_exists( 'submit_button' ) ) { 2655 require_once ABSPATH . 'wp-admin/includes/template.php'; 2656 } 2657 ?> 2658 <p class="request-filesystem-credentials-action-buttons"> 2659 <?php wp_nonce_field( 'filesystem-credentials', '_fs_nonce', false, true ); ?> 2660 <button class="button cancel-button" data-js-action="close" type="button"><?php _e( 'Cancel' ); ?></button> 2661 <?php submit_button( __( 'Proceed' ), 'primary', 'upgrade', false ); ?> 2662 </p> 2663 </div> 2664 </form> 2665 <?php 2666 return false; 2667 } 2668 2669 /** 2670 * Prints the filesystem credentials modal when needed. 2671 * 2672 * @since 4.2.0 2673 */ 2674 function wp_print_request_filesystem_credentials_modal() { 2675 $filesystem_method = get_filesystem_method(); 2676 2677 ob_start(); 2678 $filesystem_credentials_are_stored = request_filesystem_credentials( self_admin_url() ); 2679 ob_end_clean(); 2680 2681 $request_filesystem_credentials = ( 'direct' !== $filesystem_method && ! $filesystem_credentials_are_stored ); 2682 if ( ! $request_filesystem_credentials ) { 2683 return; 2684 } 2685 ?> 2686 <div id="request-filesystem-credentials-dialog" class="notification-dialog-wrap request-filesystem-credentials-dialog"> 2687 <div class="notification-dialog-background"></div> 2688 <div class="notification-dialog" role="dialog" aria-labelledby="request-filesystem-credentials-title" tabindex="0"> 2689 <div class="request-filesystem-credentials-dialog-content"> 2690 <?php request_filesystem_credentials( site_url() ); ?> 2691 </div> 2692 </div> 2693 </div> 2694 <?php 2695 } 2696 2697 /** 2698 * Attempts to clear the opcode cache for an individual PHP file. 2699 * 2700 * This function can be called safely without having to check the file extension 2701 * or availability of the OPcache extension. 2702 * 2703 * Whether or not invalidation is possible is cached to improve performance. 2704 * 2705 * @since 5.5.0 2706 * 2707 * @link https://www.php.net/manual/en/function.opcache-invalidate.php 2708 * 2709 * @param string $filepath Path to the file, including extension, for which the opcode cache is to be cleared. 2710 * @param bool $force Invalidate even if the modification time is not newer than the file in cache. 2711 * Default false. 2712 * @return bool True if opcache was invalidated for `$filepath`, or there was nothing to invalidate. 2713 * False if opcache invalidation is not available, or is disabled via filter. 2714 */ 2715 function wp_opcache_invalidate( $filepath, $force = false ) { 2716 static $can_invalidate = null; 2717 2718 /* 2719 * Check to see if WordPress is able to run `opcache_invalidate()` or not, and cache the value. 2720 * 2721 * First, check to see if the function is available to call, then if the host has restricted 2722 * the ability to run the function to avoid a PHP warning. 2723 * 2724 * `opcache.restrict_api` can specify the path for files allowed to call `opcache_invalidate()`. 2725 * 2726 * If the host has this set, check whether the path in `opcache.restrict_api` matches 2727 * the beginning of the path of the origin file. 2728 * 2729 * `$_SERVER['SCRIPT_FILENAME']` approximates the origin file's path, but `realpath()` 2730 * is necessary because `SCRIPT_FILENAME` can be a relative path when run from CLI. 2731 * 2732 * For more details, see: 2733 * - https://www.php.net/manual/en/opcache.configuration.php 2734 * - https://www.php.net/manual/en/reserved.variables.server.php 2735 * - https://core.trac.wordpress.org/ticket/36455 2736 */ 2737 if ( null === $can_invalidate 2738 && function_exists( 'opcache_invalidate' ) 2739 && ( ! ini_get( 'opcache.restrict_api' ) 2740 || stripos( realpath( $_SERVER['SCRIPT_FILENAME'] ), ini_get( 'opcache.restrict_api' ) ) === 0 ) 2741 ) { 2742 $can_invalidate = true; 2743 } 2744 2745 // If invalidation is not available, return early. 2746 if ( ! $can_invalidate ) { 2747 return false; 2748 } 2749 2750 // Verify that file to be invalidated has a PHP extension. 2751 if ( '.php' !== strtolower( substr( $filepath, -4 ) ) ) { 2752 return false; 2753 } 2754 2755 /** 2756 * Filters whether to invalidate a file from the opcode cache. 2757 * 2758 * @since 5.5.0 2759 * 2760 * @param bool $will_invalidate Whether WordPress will invalidate `$filepath`. Default true. 2761 * @param string $filepath The path to the PHP file to invalidate. 2762 */ 2763 if ( apply_filters( 'wp_opcache_invalidate_file', true, $filepath ) ) { 2764 return opcache_invalidate( $filepath, $force ); 2765 } 2766 2767 return false; 2768 } 2769 2770 /** 2771 * Attempts to clear the opcode cache for a directory of files. 2772 * 2773 * @since 6.2.0 2774 * 2775 * @see wp_opcache_invalidate() 2776 * @link https://www.php.net/manual/en/function.opcache-invalidate.php 2777 * 2778 * @global WP_Filesystem_Base $wp_filesystem WordPress filesystem subclass. 2779 * 2780 * @param string $dir The path to the directory for which the opcode cache is to be cleared. 2781 */ 2782 function wp_opcache_invalidate_directory( $dir ) { 2783 global $wp_filesystem; 2784 2785 if ( ! is_string( $dir ) || '' === trim( $dir ) ) { 2786 if ( WP_DEBUG ) { 2787 $error_message = sprintf( 2788 /* translators: %s: The function name. */ 2789 __( '%s expects a non-empty string.' ), 2790 '<code>wp_opcache_invalidate_directory()</code>' 2791 ); 2792 wp_trigger_error( '', $error_message ); 2793 } 2794 return; 2795 } 2796 2797 $dirlist = $wp_filesystem->dirlist( $dir, false, true ); 2798 2799 if ( empty( $dirlist ) ) { 2800 return; 2801 } 2802 2803 /* 2804 * Recursively invalidate opcache of files in a directory. 2805 * 2806 * WP_Filesystem_*::dirlist() returns an array of file and directory information. 2807 * 2808 * This does not include a path to the file or directory. 2809 * To invalidate files within sub-directories, recursion is needed 2810 * to prepend an absolute path containing the sub-directory's name. 2811 * 2812 * @param array $dirlist Array of file/directory information from WP_Filesystem_Base::dirlist(), 2813 * with sub-directories represented as nested arrays. 2814 * @param string $path Absolute path to the directory. 2815 */ 2816 $invalidate_directory = static function ( $dirlist, $path ) use ( &$invalidate_directory ) { 2817 $path = trailingslashit( $path ); 2818 2819 foreach ( $dirlist as $name => $details ) { 2820 if ( 'f' === $details['type'] ) { 2821 wp_opcache_invalidate( $path . $name, true ); 2822 } elseif ( is_array( $details['files'] ) && ! empty( $details['files'] ) ) { 2823 $invalidate_directory( $details['files'], $path . $name ); 2824 } 2825 } 2826 }; 2827 2828 $invalidate_directory( $dirlist, $dir ); 2829 }
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| Generated : Thu Apr 24 08:20:01 2025 | Cross-referenced by PHPXref |