wp/wp-admin/includes/class-core-upgrader.php
changeset 16 a86126ab1dd4
parent 9 177826044cd9
child 18 be944660c56a
equal deleted inserted replaced
15:3d4e9c994f10 16:a86126ab1dd4
    27 	 */
    27 	 */
    28 	public function upgrade_strings() {
    28 	public function upgrade_strings() {
    29 		$this->strings['up_to_date'] = __( 'WordPress is at the latest version.' );
    29 		$this->strings['up_to_date'] = __( 'WordPress is at the latest version.' );
    30 		$this->strings['locked']     = __( 'Another update is currently in progress.' );
    30 		$this->strings['locked']     = __( 'Another update is currently in progress.' );
    31 		$this->strings['no_package'] = __( 'Update package not available.' );
    31 		$this->strings['no_package'] = __( 'Update package not available.' );
    32 		/* translators: %s: package URL */
    32 		/* translators: %s: Package URL. */
    33 		$this->strings['downloading_package']   = sprintf( __( 'Downloading update from %s&#8230;' ), '<span class="code">%s</span>' );
    33 		$this->strings['downloading_package']   = sprintf( __( 'Downloading update from %s&#8230;' ), '<span class="code">%s</span>' );
    34 		$this->strings['unpack_package']        = __( 'Unpacking the update&#8230;' );
    34 		$this->strings['unpack_package']        = __( 'Unpacking the update&#8230;' );
    35 		$this->strings['copy_failed']           = __( 'Could not copy files.' );
    35 		$this->strings['copy_failed']           = __( 'Could not copy files.' );
    36 		$this->strings['copy_failed_space']     = __( 'Could not copy files. You may have run out of disk space.' );
    36 		$this->strings['copy_failed_space']     = __( 'Could not copy files. You may have run out of disk space.' );
    37 		$this->strings['start_rollback']        = __( 'Attempting to roll back to previous version.' );
    37 		$this->strings['start_rollback']        = __( 'Attempting to roll back to previous version.' );
    55 	 *        @type bool $attempt_rollback Whether to attempt to rollback the chances if
    55 	 *        @type bool $attempt_rollback Whether to attempt to rollback the chances if
    56 	 *                                     there is a problem. Default false.
    56 	 *                                     there is a problem. Default false.
    57 	 *        @type bool $do_rollback      Whether to perform this "upgrade" as a rollback.
    57 	 *        @type bool $do_rollback      Whether to perform this "upgrade" as a rollback.
    58 	 *                                     Default false.
    58 	 *                                     Default false.
    59 	 * }
    59 	 * }
    60 	 * @return null|false|WP_Error False or WP_Error on failure, null on success.
    60 	 * @return string|false|WP_Error New WordPress version on success, false or WP_Error on failure.
    61 	 */
    61 	 */
    62 	public function upgrade( $current, $args = array() ) {
    62 	public function upgrade( $current, $args = array() ) {
    63 		global $wp_filesystem;
    63 		global $wp_filesystem;
    64 
    64 
    65 		include( ABSPATH . WPINC . '/version.php' ); // $wp_version;
    65 		require ABSPATH . WPINC . '/version.php'; // $wp_version;
    66 
    66 
    67 		$start_time = time();
    67 		$start_time = time();
    68 
    68 
    69 		$defaults    = array(
    69 		$defaults    = array(
    70 			'pre_check_md5'                => true,
    70 			'pre_check_md5'                => true,
    76 
    76 
    77 		$this->init();
    77 		$this->init();
    78 		$this->upgrade_strings();
    78 		$this->upgrade_strings();
    79 
    79 
    80 		// Is an update available?
    80 		// Is an update available?
    81 		if ( ! isset( $current->response ) || $current->response == 'latest' ) {
    81 		if ( ! isset( $current->response ) || 'latest' === $current->response ) {
    82 			return new WP_Error( 'up_to_date', $this->strings['up_to_date'] );
    82 			return new WP_Error( 'up_to_date', $this->strings['up_to_date'] );
    83 		}
    83 		}
    84 
    84 
    85 		$res = $this->fs_connect( array( ABSPATH, WP_CONTENT_DIR ), $parsed_args['allow_relaxed_file_ownership'] );
    85 		$res = $this->fs_connect( array( ABSPATH, WP_CONTENT_DIR ), $parsed_args['allow_relaxed_file_ownership'] );
    86 		if ( ! $res || is_wp_error( $res ) ) {
    86 		if ( ! $res || is_wp_error( $res ) ) {
   102 		 * the new_bundled zip. Don't though if the constant is set to skip bundled items.
   102 		 * the new_bundled zip. Don't though if the constant is set to skip bundled items.
   103 		 * If the API returns a no_content zip, go with it. Finally, default to the full zip.
   103 		 * If the API returns a no_content zip, go with it. Finally, default to the full zip.
   104 		 */
   104 		 */
   105 		if ( $parsed_args['do_rollback'] && $current->packages->rollback ) {
   105 		if ( $parsed_args['do_rollback'] && $current->packages->rollback ) {
   106 			$to_download = 'rollback';
   106 			$to_download = 'rollback';
   107 		} elseif ( $current->packages->partial && 'reinstall' != $current->response && $wp_version == $current->partial_version && $partial ) {
   107 		} elseif ( $current->packages->partial && 'reinstall' !== $current->response && $wp_version == $current->partial_version && $partial ) {
   108 			$to_download = 'partial';
   108 			$to_download = 'partial';
   109 		} elseif ( $current->packages->new_bundled && version_compare( $wp_version, $current->new_bundled, '<' )
   109 		} elseif ( $current->packages->new_bundled && version_compare( $wp_version, $current->new_bundled, '<' )
   110 			&& ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) ) {
   110 			&& ( ! defined( 'CORE_UPGRADE_SKIP_NEW_BUNDLED' ) || ! CORE_UPGRADE_SKIP_NEW_BUNDLED ) ) {
   111 			$to_download = 'new_bundled';
   111 			$to_download = 'new_bundled';
   112 		} elseif ( $current->packages->no_content ) {
   112 		} elseif ( $current->packages->no_content ) {
   113 			$to_download = 'no_content';
   113 			$to_download = 'no_content';
   114 		} else {
   114 		} else {
   115 			$to_download = 'full';
   115 			$to_download = 'full';
   116 		}
   116 		}
   117 
   117 
   118 		// Lock to prevent multiple Core Updates occurring
   118 		// Lock to prevent multiple Core Updates occurring.
   119 		$lock = WP_Upgrader::create_lock( 'core_updater', 15 * MINUTE_IN_SECONDS );
   119 		$lock = WP_Upgrader::create_lock( 'core_updater', 15 * MINUTE_IN_SECONDS );
   120 		if ( ! $lock ) {
   120 		if ( ! $lock ) {
   121 			return new WP_Error( 'locked', $this->strings['locked'] );
   121 			return new WP_Error( 'locked', $this->strings['locked'] );
   122 		}
   122 		}
   123 
   123 
   125 
   125 
   126 		// Allow for signature soft-fail.
   126 		// Allow for signature soft-fail.
   127 		// WARNING: This may be removed in the future.
   127 		// WARNING: This may be removed in the future.
   128 		if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) {
   128 		if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) {
   129 			// Outout the failure error as a normal feedback, and not as an error:
   129 			// Outout the failure error as a normal feedback, and not as an error:
       
   130 			/** This filter is documented in wp-admin/includes/update-core.php */
   130 			apply_filters( 'update_feedback', $download->get_error_message() );
   131 			apply_filters( 'update_feedback', $download->get_error_message() );
   131 
   132 
   132 			// Report this failure back to WordPress.org for debugging purposes.
   133 			// Report this failure back to WordPress.org for debugging purposes.
   133 			wp_version_check(
   134 			wp_version_check(
   134 				array(
   135 				array(
   158 			WP_Upgrader::release_lock( 'core_updater' );
   159 			WP_Upgrader::release_lock( 'core_updater' );
   159 			return new WP_Error( 'copy_failed_for_update_core_file', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), 'wp-admin/includes/update-core.php' );
   160 			return new WP_Error( 'copy_failed_for_update_core_file', __( 'The update cannot be installed because we will be unable to copy some files. This is usually due to inconsistent file permissions.' ), 'wp-admin/includes/update-core.php' );
   160 		}
   161 		}
   161 		$wp_filesystem->chmod( $wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE );
   162 		$wp_filesystem->chmod( $wp_dir . 'wp-admin/includes/update-core.php', FS_CHMOD_FILE );
   162 
   163 
   163 		require_once( ABSPATH . 'wp-admin/includes/update-core.php' );
   164 		wp_opcache_invalidate( ABSPATH . 'wp-admin/includes/update-core.php' );
       
   165 		require_once ABSPATH . 'wp-admin/includes/update-core.php';
   164 
   166 
   165 		if ( ! function_exists( 'update_core' ) ) {
   167 		if ( ! function_exists( 'update_core' ) ) {
   166 			WP_Upgrader::release_lock( 'core_updater' );
   168 			WP_Upgrader::release_lock( 'core_updater' );
   167 			return new WP_Error( 'copy_failed_space', $this->strings['copy_failed_space'] );
   169 			return new WP_Error( 'copy_failed_space', $this->strings['copy_failed_space'] );
   168 		}
   170 		}
   217 				'action' => 'update',
   219 				'action' => 'update',
   218 				'type'   => 'core',
   220 				'type'   => 'core',
   219 			)
   221 			)
   220 		);
   222 		);
   221 
   223 
   222 		// Clear the current updates
   224 		// Clear the current updates.
   223 		delete_site_transient( 'update_core' );
   225 		delete_site_transient( 'update_core' );
   224 
   226 
   225 		if ( ! $parsed_args['do_rollback'] ) {
   227 		if ( ! $parsed_args['do_rollback'] ) {
   226 			$stats = array(
   228 			$stats = array(
   227 				'update_type'      => $current->response,
   229 				'update_type'      => $current->response,
   267 	 *
   269 	 *
   268 	 * @param string $offered_ver The offered version, of the format x.y.z.
   270 	 * @param string $offered_ver The offered version, of the format x.y.z.
   269 	 * @return bool True if we should update to the offered version, otherwise false.
   271 	 * @return bool True if we should update to the offered version, otherwise false.
   270 	 */
   272 	 */
   271 	public static function should_update_to_version( $offered_ver ) {
   273 	public static function should_update_to_version( $offered_ver ) {
   272 		include( ABSPATH . WPINC . '/version.php' ); // $wp_version; // x.y.z
   274 		require ABSPATH . WPINC . '/version.php'; // $wp_version; // x.y.z
   273 
   275 
   274 		$current_branch                 = implode( '.', array_slice( preg_split( '/[.-]/', $wp_version ), 0, 2 ) ); // x.y
   276 		$current_branch = implode( '.', array_slice( preg_split( '/[.-]/', $wp_version ), 0, 2 ) ); // x.y
   275 		$new_branch                     = implode( '.', array_slice( preg_split( '/[.-]/', $offered_ver ), 0, 2 ) ); // x.y
   277 		$new_branch     = implode( '.', array_slice( preg_split( '/[.-]/', $offered_ver ), 0, 2 ) ); // x.y
       
   278 
   276 		$current_is_development_version = (bool) strpos( $wp_version, '-' );
   279 		$current_is_development_version = (bool) strpos( $wp_version, '-' );
   277 
   280 
   278 		// Defaults:
   281 		// Defaults:
   279 		$upgrade_dev   = true;
   282 		$upgrade_dev   = true;
   280 		$upgrade_minor = true;
   283 		$upgrade_minor = true;
   281 		$upgrade_major = false;
   284 		$upgrade_major = false;
   282 
   285 
   283 		// WP_AUTO_UPDATE_CORE = true (all), 'minor', false.
   286 		// WP_AUTO_UPDATE_CORE = true (all), 'minor', false.
   284 		if ( defined( 'WP_AUTO_UPDATE_CORE' ) ) {
   287 		if ( defined( 'WP_AUTO_UPDATE_CORE' ) ) {
   285 			if ( false === WP_AUTO_UPDATE_CORE ) {
   288 			if ( false === WP_AUTO_UPDATE_CORE ) {
   286 				// Defaults to turned off, unless a filter allows it
   289 				// Defaults to turned off, unless a filter allows it.
   287 				$upgrade_dev = $upgrade_minor = $upgrade_major = false;
   290 				$upgrade_dev   = false;
       
   291 				$upgrade_minor = false;
       
   292 				$upgrade_major = false;
   288 			} elseif ( true === WP_AUTO_UPDATE_CORE ) {
   293 			} elseif ( true === WP_AUTO_UPDATE_CORE ) {
   289 				// ALL updates for core
   294 				// ALL updates for core.
   290 				$upgrade_dev = $upgrade_minor = $upgrade_major = true;
   295 				$upgrade_dev   = true;
       
   296 				$upgrade_minor = true;
       
   297 				$upgrade_major = true;
   291 			} elseif ( 'minor' === WP_AUTO_UPDATE_CORE ) {
   298 			} elseif ( 'minor' === WP_AUTO_UPDATE_CORE ) {
   292 				// Only minor updates for core
   299 				// Only minor updates for core.
   293 				$upgrade_dev   = $upgrade_major = false;
   300 				$upgrade_dev   = false;
   294 				$upgrade_minor = true;
   301 				$upgrade_minor = true;
       
   302 				$upgrade_major = false;
   295 			}
   303 			}
   296 		}
   304 		}
   297 
   305 
   298 		// 1: If we're already on that version, not much point in updating?
   306 		// 1: If we're already on that version, not much point in updating?
   299 		if ( $offered_ver == $wp_version ) {
   307 		if ( $offered_ver == $wp_version ) {
   300 			return false;
   308 			return false;
   301 		}
   309 		}
   302 
   310 
   303 		// 2: If we're running a newer version, that's a nope
   311 		// 2: If we're running a newer version, that's a nope.
   304 		if ( version_compare( $wp_version, $offered_ver, '>' ) ) {
   312 		if ( version_compare( $wp_version, $offered_ver, '>' ) ) {
   305 			return false;
   313 			return false;
   306 		}
   314 		}
   307 
   315 
   308 		$failure_data = get_site_option( 'auto_core_update_failed' );
   316 		$failure_data = get_site_option( 'auto_core_update_failed' );
   315 			// Don't claim we can update on update-core.php if we have a non-critical failure logged.
   323 			// Don't claim we can update on update-core.php if we have a non-critical failure logged.
   316 			if ( $wp_version == $failure_data['current'] && false !== strpos( $offered_ver, '.1.next.minor' ) ) {
   324 			if ( $wp_version == $failure_data['current'] && false !== strpos( $offered_ver, '.1.next.minor' ) ) {
   317 				return false;
   325 				return false;
   318 			}
   326 			}
   319 
   327 
   320 			// Cannot update if we're retrying the same A to B update that caused a non-critical failure.
   328 			/*
   321 			// Some non-critical failures do allow retries, like download_failed.
   329 			 * Cannot update if we're retrying the same A to B update that caused a non-critical failure.
   322 			// 3.7.1 => 3.7.2 resulted in files_not_writable, if we are still on 3.7.1 and still trying to update to 3.7.2.
   330 			 * Some non-critical failures do allow retries, like download_failed.
       
   331 			 * 3.7.1 => 3.7.2 resulted in files_not_writable, if we are still on 3.7.1 and still trying to update to 3.7.2.
       
   332 			 */
   323 			if ( empty( $failure_data['retry'] ) && $wp_version == $failure_data['current'] && $offered_ver == $failure_data['attempted'] ) {
   333 			if ( empty( $failure_data['retry'] ) && $wp_version == $failure_data['current'] && $offered_ver == $failure_data['attempted'] ) {
   324 				return false;
   334 				return false;
   325 			}
   335 			}
   326 		}
   336 		}
   327 
   337 
   328 		// 3: 3.7-alpha-25000 -> 3.7-alpha-25678 -> 3.7-beta1 -> 3.7-beta2
   338 		// 3: 3.7-alpha-25000 -> 3.7-alpha-25678 -> 3.7-beta1 -> 3.7-beta2.
   329 		if ( $current_is_development_version ) {
   339 		if ( $current_is_development_version ) {
   330 
   340 
   331 			/**
   341 			/**
   332 			 * Filters whether to enable automatic core updates for development versions.
   342 			 * Filters whether to enable automatic core updates for development versions.
   333 			 *
   343 			 *
   340 				return false;
   350 				return false;
   341 			}
   351 			}
   342 			// Else fall through to minor + major branches below.
   352 			// Else fall through to minor + major branches below.
   343 		}
   353 		}
   344 
   354 
   345 		// 4: Minor In-branch updates (3.7.0 -> 3.7.1 -> 3.7.2 -> 3.7.4)
   355 		// 4: Minor in-branch updates (3.7.0 -> 3.7.1 -> 3.7.2 -> 3.7.4).
   346 		if ( $current_branch == $new_branch ) {
   356 		if ( $current_branch == $new_branch ) {
   347 
   357 
   348 			/**
   358 			/**
   349 			 * Filters whether to enable minor automatic core updates.
   359 			 * Filters whether to enable minor automatic core updates.
   350 			 *
   360 			 *
   353 			 * @param bool $upgrade_minor Whether to enable minor automatic core updates.
   363 			 * @param bool $upgrade_minor Whether to enable minor automatic core updates.
   354 			 */
   364 			 */
   355 			return apply_filters( 'allow_minor_auto_core_updates', $upgrade_minor );
   365 			return apply_filters( 'allow_minor_auto_core_updates', $upgrade_minor );
   356 		}
   366 		}
   357 
   367 
   358 		// 5: Major version updates (3.7.0 -> 3.8.0 -> 3.9.1)
   368 		// 5: Major version updates (3.7.0 -> 3.8.0 -> 3.9.1).
   359 		if ( version_compare( $new_branch, $current_branch, '>' ) ) {
   369 		if ( version_compare( $new_branch, $current_branch, '>' ) ) {
   360 
   370 
   361 			/**
   371 			/**
   362 			 * Filters whether to enable major automatic core updates.
   372 			 * Filters whether to enable major automatic core updates.
   363 			 *
   373 			 *
   366 			 * @param bool $upgrade_major Whether to enable major automatic core updates.
   376 			 * @param bool $upgrade_major Whether to enable major automatic core updates.
   367 			 */
   377 			 */
   368 			return apply_filters( 'allow_major_auto_core_updates', $upgrade_major );
   378 			return apply_filters( 'allow_major_auto_core_updates', $upgrade_major );
   369 		}
   379 		}
   370 
   380 
   371 		// If we're not sure, we don't want it
   381 		// If we're not sure, we don't want it.
   372 		return false;
   382 		return false;
   373 	}
   383 	}
   374 
   384 
   375 	/**
   385 	/**
   376 	 * Compare the disk file checksums against the expected checksums.
   386 	 * Compare the disk file checksums against the expected checksums.
   377 	 *
   387 	 *
   378 	 * @since 3.7.0
   388 	 * @since 3.7.0
   379 	 *
   389 	 *
   380 	 * @global string $wp_version
   390 	 * @global string $wp_version       The WordPress version string.
   381 	 * @global string $wp_local_package
   391 	 * @global string $wp_local_package Locale code of the package.
   382 	 *
   392 	 *
   383 	 * @return bool True if the checksums match, otherwise false.
   393 	 * @return bool True if the checksums match, otherwise false.
   384 	 */
   394 	 */
   385 	public function check_files() {
   395 	public function check_files() {
   386 		global $wp_version, $wp_local_package;
   396 		global $wp_version, $wp_local_package;
   390 		if ( ! is_array( $checksums ) ) {
   400 		if ( ! is_array( $checksums ) ) {
   391 			return false;
   401 			return false;
   392 		}
   402 		}
   393 
   403 
   394 		foreach ( $checksums as $file => $checksum ) {
   404 		foreach ( $checksums as $file => $checksum ) {
   395 			// Skip files which get updated
   405 			// Skip files which get updated.
   396 			if ( 'wp-content' == substr( $file, 0, 10 ) ) {
   406 			if ( 'wp-content' === substr( $file, 0, 10 ) ) {
   397 				continue;
   407 				continue;
   398 			}
   408 			}
   399 			if ( ! file_exists( ABSPATH . $file ) || md5_file( ABSPATH . $file ) !== $checksum ) {
   409 			if ( ! file_exists( ABSPATH . $file ) || md5_file( ABSPATH . $file ) !== $checksum ) {
   400 				return false;
   410 				return false;
   401 			}
   411 			}