| 1 |
<?php |
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|
| 3 |
require_once( JETPACK__PLUGIN_DIR . 'sal/class.json-api-date.php' ); |
| 4 |
|
| 5 |
/** |
| 6 |
* Class to handle different actions related to media. |
| 7 |
*/ |
| 8 |
class Jetpack_Media { |
| 9 |
public static $WP_ORIGINAL_MEDIA = '_wp_original_post_media'; |
| 10 |
public static $WP_REVISION_HISTORY = '_wp_revision_history'; |
| 11 |
public static $REVISION_HISTORY_MAXIMUM_AMOUNT = 0; |
| 12 |
public static $WP_ATTACHMENT_IMAGE_ALT = '_wp_attachment_image_alt'; |
| 13 |
|
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/** |
| 15 |
* Generate a filename in function of the original filename of the media. |
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* The returned name has the `{basename}-{hash}-{random-number}.{ext}` shape. |
| 17 |
* The hash is built according to the filename trying to avoid name collisions |
| 18 |
* with other media files. |
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* |
| 20 |
* @param number $media_id - media post ID |
| 21 |
* @param string $new_filename - the new filename |
| 22 |
* @return string A random filename. |
| 23 |
*/ |
| 24 |
public static function generate_new_filename( $media_id, $new_filename ) { |
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// get the right filename extension |
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$new_filename_paths = pathinfo( $new_filename ); |
| 27 |
$new_file_ext = $new_filename_paths['extension']; |
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|
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// take out filename from the original file or from the current attachment |
| 30 |
$original_media = (array) self::get_original_media( $media_id ); |
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|
| 32 |
if ( ! empty( $original_media ) ) { |
| 33 |
$original_file_parts = pathinfo( $original_media['file'] ); |
| 34 |
$filename_base = $original_file_parts['filename']; |
| 35 |
} else { |
| 36 |
$current_file = get_attached_file( $media_id ); |
| 37 |
$current_file_parts = pathinfo( $current_file ); |
| 38 |
$current_file_ext = $current_file_parts['filename']; |
| 39 |
$filename_base = $current_file_parts['filename']; |
| 40 |
} |
| 41 |
|
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// add unique seed based on the filename |
| 43 |
$filename_base .= '-' . crc32( $filename_base ) . '-'; |
| 44 |
|
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$number_suffix = time() . rand( 100, 999 ); |
| 46 |
|
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do { |
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$filename = $filename_base; |
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$filename .= $number_suffix; |
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$file_ext = $new_file_ext ? $new_file_ext : $current_file_ext; |
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|
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$new_filename = "{$filename}.{$file_ext}"; |
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$new_path = "{$current_file_parts['dirname']}/$new_filename"; |
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$number_suffix++; |
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} while( file_exists( $new_path ) ); |
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|
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return $new_filename; |
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} |
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|
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/** |
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* File urls use the post (image item) date to generate a folder path. |
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* Post dates can change, so we use the original date used in the `guid` |
| 63 |
* url so edits can remain in the same folder. In the following function |
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* we capture a string in the format of `YYYY/MM` from the guid. |
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* |
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* For example with a guid of |
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* "http://test.files.wordpress.com/2016/10/test.png" the resulting string |
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* would be: "2016/10" |
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* |
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* @param number $media_id |
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* @return string |
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*/ |
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private function get_time_string_from_guid( $media_id ) { |
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$time = date( "Y/m", strtotime( current_time( 'mysql' ) ) ); |
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|
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if ( $media = get_post( $media_id ) ) { |
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$pattern = '/\/(\d{4}\/\d{2})\//'; |
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preg_match( $pattern, $media->guid, $matches ); |
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if ( count( $matches ) > 1 ) { |
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$time = $matches[1]; |
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} |
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} |
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return $time; |
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} |
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|
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/** |
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* Return an array of allowed mime_type items used to upload a media file. |
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* |
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* @return array mime_type array |
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*/ |
| 91 |
static function get_allowed_mime_types( $default_mime_types ) { |
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return array_unique( array_merge( $default_mime_types, array( |
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'application/msword', // .doc |
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'application/vnd.ms-powerpoint', // .ppt, .pps |
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'application/vnd.ms-excel', // .xls |
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'application/vnd.openxmlformats-officedocument.presentationml.presentation', // .pptx |
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'application/vnd.openxmlformats-officedocument.presentationml.slideshow', // .ppsx |
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'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet', // .xlsx |
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'application/vnd.openxmlformats-officedocument.wordprocessingml.document', // .docx |
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'application/vnd.oasis.opendocument.text', // .odt |
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'application/pdf', // .pdf |
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) ) ); |
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} |
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|
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/** |
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* Checks that the mime type of the file |
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* is among those in a filterable list of mime types. |
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* |
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* @param string $file Path to file to get its mime type. |
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* @return bool |
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*/ |
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protected static function is_file_supported_for_sideloading( $file ) { |
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return jetpack_is_file_supported_for_sideloading( $file ); |
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} |
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|
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/** |
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* Try to remove the temporal file from the given file array. |
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* |
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* @param array $file_array Array with data about the temporal file |
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* @return bool `true` if the file has been removed. `false` either the file doesn't exist or it couldn't be removed. |
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*/ |
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private static function remove_tmp_file( $file_array ) { |
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if ( ! file_exists ( $file_array['tmp_name'] ) ) { |
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return false; |
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} |
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return @unlink( $file_array['tmp_name'] ); |
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} |
| 128 |
|
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/** |
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* Save the given temporal file considering file type, |
| 131 |
* correct location according to the original file path, etc. |
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* The file type control is done through of `jetpack_supported_media_sideload_types` filter, |
| 133 |
* which allows define to the users their own file types list. |
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* |
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* @param array $file_array file to save |
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* @param number $media_id |
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* @return array|WP_Error an array with information about the new file saved or a WP_Error is something went wrong. |
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*/ |
| 139 |
public static function save_temporary_file( $file_array, $media_id ) { |
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$tmp_filename = $file_array['tmp_name']; |
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|
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if ( ! file_exists( $tmp_filename ) ) { |
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return new WP_Error( 'invalid_input', 'No media provided in input.' ); |
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} |
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|
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// add additional mime_types through of the `jetpack_supported_media_sideload_types` filter |
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$mime_type_static_filter = array( |
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'Jetpack_Media', |
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'get_allowed_mime_types' |
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); |
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|
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add_filter( 'jetpack_supported_media_sideload_types', $mime_type_static_filter ); |
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if ( |
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! self::is_file_supported_for_sideloading( $tmp_filename ) && |
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! file_is_displayable_image( $tmp_filename ) |
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) { |
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@unlink( $tmp_filename ); |
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return new WP_Error( 'invalid_input', 'Invalid file type.', 403 ); |
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} |
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remove_filter( 'jetpack_supported_media_sideload_types', $mime_type_static_filter ); |
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|
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// generate a new file name |
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$tmp_new_filename = self::generate_new_filename( $media_id, $file_array[ 'name' ] ); |
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|
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// start to create the parameters to move the temporal file |
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$overrides = array( 'test_form' => false ); |
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|
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// get time according to the original filaname |
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$time = self::get_time_string_from_guid( $media_id ); |
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|
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$file_array['name'] = $tmp_new_filename; |
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$file = wp_handle_sideload( $file_array, $overrides, $time ); |
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|
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self::remove_tmp_file( $file_array ); |
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|
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if ( isset( $file['error'] ) ) { |
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return new WP_Error( 'upload_error', $file['error'] ); |
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} |
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|
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return $file; |
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} |
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|
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/** |
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* Return an object with an snapshot of a revision item. |
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* |
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* @param object $media_item - media post object |
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* @return object a revision item |
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*/ |
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public static function get_snapshot( $media_item ) { |
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$current_file = get_attached_file( $media_item->ID ); |
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$file_paths = pathinfo( $current_file ); |
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|
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$snapshot = array( |
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'date' => (string) WPCOM_JSON_API_Date::format_date( $media_item->post_modified_gmt, $media_item->post_modified ), |
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'URL' => (string) wp_get_attachment_url( $media_item->ID ), |
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'file' => (string) $file_paths['basename'], |
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'extension' => (string) $file_paths['extension'], |
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'mime_type' => (string) $media_item->post_mime_type, |
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'size' => (int) filesize( $current_file ), |
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); |
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|
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return (object) $snapshot; |
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} |
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|
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/** |
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* Add a new item into revision_history array. |
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* |
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* @param object $media_item - media post object |
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* @param file $file - file recently added |
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* @param bool $has_original_media - condition is the original media has been already added |
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* @return bool `true` if the item has been added. Otherwise `false`. |
| 212 |
*/ |
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public static function register_revision( $media_item, $file, $has_original_media ) { |
| 214 |
if ( is_wp_error( $file ) || ! $has_original_media ) { |
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return false; |
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} |
| 217 |
|
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add_post_meta( $media_item->ID, self::$WP_REVISION_HISTORY, self::get_snapshot( $media_item ) ); |
| 219 |
} |
| 220 |
/** |
| 221 |
* Return the `revision_history` of the given media. |
| 222 |
* |
| 223 |
* @param number $media_id - media post ID |
| 224 |
* @return array `revision_history` array |
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*/ |
| 226 |
public static function get_revision_history( $media_id ) { |
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return array_reverse( get_post_meta( $media_id, self::$WP_REVISION_HISTORY ) ); |
| 228 |
} |
| 229 |
|
| 230 |
/** |
| 231 |
* Return the original media data |
| 232 |
*/ |
| 233 |
public static function get_original_media( $media_id ) { |
| 234 |
$original = get_post_meta( $media_id, self::$WP_ORIGINAL_MEDIA, true ); |
| 235 |
$original = $original ? $original : array(); |
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return $original; |
| 237 |
} |
| 238 |
|
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public static function delete_file( $pathname ) { |
| 240 |
if ( ! file_exists( $pathname ) || ! is_file( $pathname ) ) { |
| 241 |
// let's touch a fake file to try to `really` remove the media file |
| 242 |
touch( $pathname ); |
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} |
| 244 |
|
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return wp_delete_file( $pathname ); |
| 246 |
} |
| 247 |
|
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/** |
| 249 |
* Try to delete a file according to the dirname of |
| 250 |
* the media attached file and the filename. |
| 251 |
* |
| 252 |
* @param number $media_id - media post ID |
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* @param string $filename - basename of the file ( name-of-file.ext ) |
| 254 |
* @return bool `true` is the file has been removed, `false` if not. |
| 255 |
*/ |
| 256 |
private static function delete_media_history_file( $media_id, $filename ) { |
| 257 |
$attached_path = get_attached_file( $media_id ); |
| 258 |
$attached_parts = pathinfo( $attached_path ); |
| 259 |
$dirname = $attached_parts['dirname']; |
| 260 |
|
| 261 |
$pathname = $dirname . '/' . $filename; |
| 262 |
|
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// remove thumbnails |
| 264 |
$metadata = wp_generate_attachment_metadata( $media_id, $pathname ); |
| 265 |
|
| 266 |
if ( isset( $metadata ) && isset( $metadata['sizes'] ) ) { |
| 267 |
foreach ( $metadata['sizes'] as $size => $properties ) { |
| 268 |
self::delete_file( $dirname . '/' . $properties['file'] ); |
| 269 |
} |
| 270 |
} |
| 271 |
|
| 272 |
// remove primary file |
| 273 |
self::delete_file( $pathname ); |
| 274 |
} |
| 275 |
|
| 276 |
/** |
| 277 |
* Remove specific items from the `revision history` array |
| 278 |
* depending on the given criteria: array( |
| 279 |
* 'from' => (int) <from>, |
| 280 |
* 'to' => (int) <to>, |
| 281 |
* ) |
| 282 |
* |
| 283 |
* Also, it removes the file defined in each item. |
| 284 |
* |
| 285 |
* @param number $media_id - media post ID |
| 286 |
* @param object $criteria - criteria to remove the items |
| 287 |
* @param array [$revision_history] - revision history array |
| 288 |
* @return array `revision_history` array updated. |
| 289 |
*/ |
| 290 |
public static function remove_items_from_revision_history( $media_id, $criteria = array(), $revision_history ) { |
| 291 |
if ( ! isset ( $revision_history ) ) { |
| 292 |
$revision_history = self::get_revision_history( $media_id ); |
| 293 |
} |
| 294 |
|
| 295 |
$from = $criteria['from']; |
| 296 |
$to = $criteria['to'] ? $criteria['to'] : ( $from + 1 ); |
| 297 |
|
| 298 |
for ( $i = $from; $i < $to; $i++ ) { |
| 299 |
$removed_item = array_slice( $revision_history, $from, 1 ); |
| 300 |
if ( ! $removed_item ) { |
| 301 |
break; |
| 302 |
} |
| 303 |
|
| 304 |
array_splice( $revision_history, $from, 1 ); |
| 305 |
self::delete_media_history_file( $media_id, $removed_item[0]->file ); |
| 306 |
} |
| 307 |
|
| 308 |
// override all history items |
| 309 |
delete_post_meta( $media_id, self::$WP_REVISION_HISTORY ); |
| 310 |
$revision_history = array_reverse( $revision_history ); |
| 311 |
foreach ( $revision_history as &$item ) { |
| 312 |
add_post_meta( $media_id, self::$WP_REVISION_HISTORY, $item ); |
| 313 |
} |
| 314 |
|
| 315 |
return $revision_history; |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Limit the number of items of the `revision_history` array. |
| 320 |
* When the stack is overflowing the oldest item is remove from there (FIFO). |
| 321 |
* |
| 322 |
* @param number $media_id - media post ID |
| 323 |
* @param number [$limit] - maximun amount of items. 20 as default. |
| 324 |
* @return array items removed from `revision_history` |
| 325 |
*/ |
| 326 |
public static function limit_revision_history( $media_id, $limit = null) { |
| 327 |
if ( is_null( $limit ) ) { |
| 328 |
$limit = self::$REVISION_HISTORY_MAXIMUM_AMOUNT; |
| 329 |
} |
| 330 |
|
| 331 |
$revision_history = self::get_revision_history( $media_id ); |
| 332 |
|
| 333 |
$total = count( $revision_history ); |
| 334 |
|
| 335 |
if ( $total < $limit ) { |
| 336 |
return array(); |
| 337 |
} |
| 338 |
|
| 339 |
self::remove_items_from_revision_history( |
| 340 |
$media_id, |
| 341 |
array( 'from' => $limit, 'to' => $total ), |
| 342 |
$revision_history |
| 343 |
); |
| 344 |
|
| 345 |
return self::get_revision_history( $media_id ); |
| 346 |
} |
| 347 |
|
| 348 |
/** |
| 349 |
* Remove the original file and clean the post metadata. |
| 350 |
* |
| 351 |
* @param number $media_id - media post ID |
| 352 |
*/ |
| 353 |
public static function clean_original_media( $media_id ) { |
| 354 |
$original_file = self::get_original_media( $media_id ); |
| 355 |
|
| 356 |
if ( ! $original_file ) { |
| 357 |
return null; |
| 358 |
} |
| 359 |
|
| 360 |
self::delete_media_history_file( $media_id, $original_file->file ); |
| 361 |
return delete_post_meta( $media_id, self::$WP_ORIGINAL_MEDIA ); |
| 362 |
} |
| 363 |
|
| 364 |
/** |
| 365 |
* Clean `revision_history` of the given $media_id. it means: |
| 366 |
* - remove all media files tied to the `revision_history` items. |
| 367 |
* - clean `revision_history` meta data. |
| 368 |
* - remove and clean the `original_media` |
| 369 |
* |
| 370 |
* @param number $media_id - media post ID |
| 371 |
* @return array results of removing these files |
| 372 |
*/ |
| 373 |
public static function clean_revision_history( $media_id ) { |
| 374 |
self::clean_original_media( $media_id ); |
| 375 |
|
| 376 |
$revision_history = self::get_revision_history( $media_id ); |
| 377 |
$total = count( $revision_history ); |
| 378 |
$updated_history = array(); |
| 379 |
|
| 380 |
if ( $total < 1 ) { |
| 381 |
return $updated_history; |
| 382 |
} |
| 383 |
|
| 384 |
$updated_history = self::remove_items_from_revision_history( |
| 385 |
$media_id, |
| 386 |
array( 'from' => 0, 'to' => $total ), |
| 387 |
$revision_history |
| 388 |
); |
| 389 |
|
| 390 |
return $updated_history; |
| 391 |
} |
| 392 |
|
| 393 |
/** |
| 394 |
* Edit media item process: |
| 395 |
* |
| 396 |
* - update attachment file |
| 397 |
* - preserve original media file |
| 398 |
* - trace revision history |
| 399 |
* |
| 400 |
* @param number $media_id - media post ID |
| 401 |
* @param array $file_array - temporal file |
| 402 |
* @return {Post|WP_Error} Updated media item or a WP_Error is something went wrong. |
| 403 |
*/ |
| 404 |
public static function edit_media_file( $media_id, $file_array ) { |
| 405 |
$media_item = get_post( $media_id ); |
| 406 |
$has_original_media = self::get_original_media( $media_id ); |
| 407 |
|
| 408 |
if ( ! $has_original_media ) { |
| 409 |
// The first time that the media is updated |
| 410 |
// the original media is stored into the revision_history |
| 411 |
$snapshot = self::get_snapshot( $media_item ); |
| 412 |
add_post_meta( $media_id, self::$WP_ORIGINAL_MEDIA, $snapshot, true ); |
| 413 |
} |
| 414 |
|
| 415 |
// save temporary file in the correct location |
| 416 |
$uploaded_file = self::save_temporary_file( $file_array, $media_id ); |
| 417 |
|
| 418 |
if ( is_wp_error( $uploaded_file ) ) { |
| 419 |
self::remove_tmp_file( $file_array ); |
| 420 |
return $uploaded_file; |
| 421 |
} |
| 422 |
|
| 423 |
// revision_history control |
| 424 |
self::register_revision( $media_item, $uploaded_file, $has_original_media ); |
| 425 |
|
| 426 |
$uploaded_path = $uploaded_file['file']; |
| 427 |
$udpated_mime_type = $uploaded_file['type']; |
| 428 |
$was_updated = update_attached_file( $media_id, $uploaded_path ); |
| 429 |
|
| 430 |
if ( ! $was_updated ) { |
| 431 |
return WP_Error( 'update_error', 'Media update error' ); |
| 432 |
} |
| 433 |
|
| 434 |
$new_metadata = wp_generate_attachment_metadata( $media_id, $uploaded_path ); |
| 435 |
wp_update_attachment_metadata( $media_id, $new_metadata ); |
| 436 |
|
| 437 |
// check maximum amount of revision_history |
| 438 |
self::limit_revision_history( $media_id ); |
| 439 |
|
| 440 |
$edited_action = wp_update_post( (object) array( |
| 441 |
'ID' => $media_id, |
| 442 |
'post_mime_type' => $udpated_mime_type |
| 443 |
), true ); |
| 444 |
|
| 445 |
if ( is_wp_error( $edited_action ) ) { |
| 446 |
return $edited_action; |
| 447 |
} |
| 448 |
|
| 449 |
return $media_item; |
| 450 |
} |
| 451 |
} |
| 452 |
|
| 453 |
// hook: clean revision history when the media item is deleted |
| 454 |
function clean_revision_history( $media_id ) { |
| 455 |
Jetpack_Media::clean_revision_history( $media_id ); |
| 456 |
}; |
| 457 |
|
| 458 |
add_action( 'delete_attachment', 'clean_revision_history' ); |
| 459 |
|
| 460 |
|
