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_inc/lib/class.media.php (2 issues)

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1
<?php
2
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
14
	/**
15
	 * Generate a filename in function of the original filename of the media.
16
	 * 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.
19
	 *
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 ) {
25
		// Get the right filename extension.
26
		$new_filename_paths = pathinfo( $new_filename );
27
		$new_file_ext       = $new_filename_paths['extension'];
28
29
		// Get the file parts from the current attachment.
30
		$current_file         = get_attached_file( $media_id );
31
		$current_file_parts   = pathinfo( $current_file );
32
		$current_file_ext     = $current_file_parts['extension'];
33
		$current_file_dirname = $current_file_parts['dirname'];
34
35
		// Take out filename from the original file or from the current attachment.
36
		$original_media = (array) self::get_original_media( $media_id );
37
38
		if ( ! empty( $original_media ) ) {
39
			$original_file_parts = pathinfo( $original_media['file'] );
40
			$filename_base       = $original_file_parts['filename'];
41
		} else {
42
			$filename_base = $current_file_parts['filename'];
43
		}
44
45
		// Add unique seed based on the filename.
46
		$filename_base .= '-' . crc32( $filename_base ) . '-';
47
48
		$number_suffix = time() . rand( 100, 999 );
49
50
		do {
51
			$filename  = $filename_base;
52
			$filename .= $number_suffix;
53
			$file_ext  = $new_file_ext ? $new_file_ext : $current_file_ext;
54
55
			$new_filename = "{$filename}.{$file_ext}";
56
			$new_path     = "{$current_file_dirname}/$new_filename";
57
			$number_suffix++;
58
		} while ( file_exists( $new_path ) );
59
60
		return $new_filename;
61
	}
62
63
	/**
64
	 * File urls use the post (image item) date to generate a folder path.
65
	 * Post dates can change, so we use the original date used in the `guid`
66
	 * url so edits can remain in the same folder. In the following function
67
	 * we capture a string in the format of `YYYY/MM` from the guid.
68
	 *
69
	 * For example with a guid of
70
	 * "http://test.files.wordpress.com/2016/10/test.png" the resulting string
71
	 * would be: "2016/10"
72
	 *
73
	 * @param  number $media_id
74
	 * @return string
75
	 */
76 View Code Duplication
	private static function get_time_string_from_guid( $media_id ) {
77
		$time = date( "Y/m", strtotime( current_time( 'mysql' ) ) );
78
79
		if ( $media = get_post( $media_id ) ) {
80
			$pattern = '/\/(\d{4}\/\d{2})\//';
81
			preg_match( $pattern, $media->guid, $matches );
82
			if ( count( $matches ) > 1 ) {
83
				$time = $matches[1];
84
			}
85
		}
86
		return $time;
87
	}
88
89
	/**
90
	 * Return an array of allowed mime_type items used to upload a media file.
91
	 *
92
	 * @return array mime_type array
93
	 */
94 View Code Duplication
	static function get_allowed_mime_types( $default_mime_types ) {
95
		return array_unique( array_merge( $default_mime_types, array(
96
			'application/msword',                                                         // .doc
97
			'application/vnd.ms-powerpoint',                                              // .ppt, .pps
98
			'application/vnd.ms-excel',                                                   // .xls
99
			'application/vnd.openxmlformats-officedocument.presentationml.presentation',  // .pptx
100
			'application/vnd.openxmlformats-officedocument.presentationml.slideshow',     // .ppsx
101
			'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',          // .xlsx
102
			'application/vnd.openxmlformats-officedocument.wordprocessingml.document',    // .docx
103
			'application/vnd.oasis.opendocument.text',                                    // .odt
104
			'application/pdf',                                                            // .pdf
105
		) ) );
106
	}
107
108
	/**
109
	 * Checks that the mime type of the file
110
	 * is among those in a filterable list of mime types.
111
	 *
112
	 * @param  string $file Path to file to get its mime type.
113
	 * @return bool
114
	 */
115
	protected static function is_file_supported_for_sideloading( $file ) {
116
		return jetpack_is_file_supported_for_sideloading( $file );
117
	}
118
119
	/**
120
	 * Try to remove the temporal file from the given file array.
121
	 *
122
	 * @param  array $file_array Array with data about the temporal file
123
	 * @return bool `true` if the file has been removed. `false` either the file doesn't exist or it couldn't be removed.
124
	 */
125
	private static function remove_tmp_file( $file_array ) {
126
		if ( ! file_exists ( $file_array['tmp_name'] ) ) {
127
			return false;
128
		}
129
		return @unlink( $file_array['tmp_name'] );
130
	}
131
132
	/**
133
	 * Save the given temporal file considering file type,
134
	 * correct location according to the original file path, etc.
135
	 * The file type control is done through of `jetpack_supported_media_sideload_types` filter,
136
	 * which allows define to the users their own file types list.
137
	 *
138
	 * @param  array  $file_array file to save
139
	 * @param  number $media_id
140
	 * @return array|WP_Error an array with information about the new file saved or a WP_Error is something went wrong.
141
	 */
142
	public static function save_temporary_file( $file_array, $media_id ) {
143
		$tmp_filename = $file_array['tmp_name'];
144
145
		if ( ! file_exists( $tmp_filename ) ) {
146
			return new WP_Error( 'invalid_input', 'No media provided in input.' );
147
		}
148
149
		// add additional mime_types through of the `jetpack_supported_media_sideload_types` filter
150
		$mime_type_static_filter = array(
151
			'Jetpack_Media',
152
			'get_allowed_mime_types'
153
		);
154
155
		add_filter( 'jetpack_supported_media_sideload_types', $mime_type_static_filter );
156 View Code Duplication
		if (
157
			! self::is_file_supported_for_sideloading( $tmp_filename ) &&
158
			! file_is_displayable_image( $tmp_filename )
159
		) {
160
			@unlink( $tmp_filename );
161
			return new WP_Error( 'invalid_input', 'Invalid file type.', 403 );
162
		}
163
		remove_filter( 'jetpack_supported_media_sideload_types', $mime_type_static_filter );
164
165
		// generate a new file name
166
		$tmp_new_filename = self::generate_new_filename( $media_id, $file_array[ 'name' ] );
167
168
		// start to create the parameters to move the temporal file
169
		$overrides = array( 'test_form' => false );
170
171
		// get time according to the original filaname
172
		$time = self::get_time_string_from_guid( $media_id );
173
174
		$file_array['name'] = $tmp_new_filename;
175
		$file = wp_handle_sideload( $file_array, $overrides, $time );
176
177
		self::remove_tmp_file( $file_array );
178
179
		if ( isset( $file['error'] ) ) {
180
			return new WP_Error( 'upload_error', $file['error'] );
181
		}
182
183
		return $file;
184
	}
185
186
	/**
187
	 * Return an object with an snapshot of a revision item.
188
	 *
189
	 * @param  object $media_item - media post object
190
	 * @return object a revision item
191
	 */
192 View Code Duplication
	public static function get_snapshot( $media_item ) {
193
		$current_file = get_attached_file( $media_item->ID );
194
		$file_paths = pathinfo( $current_file );
195
196
		$snapshot = array(
197
			'date'             => (string) WPCOM_JSON_API_Date::format_date( $media_item->post_modified_gmt, $media_item->post_modified ),
198
			'URL'              => (string) wp_get_attachment_url( $media_item->ID ),
199
			'file'             => (string) $file_paths['basename'],
200
			'extension'        => (string) $file_paths['extension'],
201
			'mime_type'        => (string) $media_item->post_mime_type,
202
			'size'             => (int) filesize( $current_file ),
203
		);
204
205
		return (object) $snapshot;
206
	}
207
208
	/**
209
	 * Add a new item into revision_history array.
210
	 *
211
	 * @param  object $media_item - media post object
212
	 * @param  file $file - file recently added
213
	 * @param  bool $has_original_media - condition is the original media has been already added
214
	 * @return bool `true` if the item has been added. Otherwise `false`.
215
	 */
216
	public static function register_revision( $media_item, $file, $has_original_media ) {
217
		if ( is_wp_error( $file ) || ! $has_original_media ) {
218
			return false;
219
		}
220
221
		add_post_meta( $media_item->ID, self::$WP_REVISION_HISTORY, self::get_snapshot( $media_item ) );
222
	}
223
	/**
224
	 * Return the `revision_history` of the given media.
225
	 *
226
	 * @param  number $media_id - media post ID
227
	 * @return array `revision_history` array
228
	 */
229
	public static function get_revision_history( $media_id ) {
230
		return array_reverse( get_post_meta( $media_id, self::$WP_REVISION_HISTORY ) );
231
	}
232
233
	/**
234
	 * Return the original media data
235
	 */
236
	public static function get_original_media( $media_id ) {
237
		$original = get_post_meta( $media_id, self::$WP_ORIGINAL_MEDIA, true );
238
		$original = $original ? $original : array();
239
		return $original;
240
	}
241
242
	public static function delete_file( $pathname ) {
243
		if ( ! file_exists( $pathname ) || ! is_file( $pathname ) ) {
244
			// let's touch a fake file to try to `really` remove the media file
245
			touch( $pathname );
246
		}
247
248
		return wp_delete_file( $pathname );
249
	}
250
251
	/**
252
	 * Try to delete a file according to the dirname of
253
	 * the media attached file and the filename.
254
	 *
255
	 * @param  number $media_id - media post ID
256
	 * @param  string $filename - basename of the file ( name-of-file.ext )
257
	 * @return bool `true` is the file has been removed, `false` if not.
258
	 */
259
	private static function delete_media_history_file( $media_id, $filename ) {
260
		$attached_path = get_attached_file( $media_id );
261
		$attached_parts = pathinfo( $attached_path );
262
		$dirname = $attached_parts['dirname'];
263
264
		$pathname = $dirname . '/' . $filename;
265
266
		// remove thumbnails
267
		$metadata = wp_generate_attachment_metadata( $media_id, $pathname );
268
269
		if ( isset( $metadata ) && isset( $metadata['sizes'] ) ) {
270
			foreach ( $metadata['sizes'] as $size => $properties ) {
271
				self::delete_file( $dirname . '/' . $properties['file'] );
272
			}
273
		}
274
275
		// remove primary file
276
		self::delete_file( $pathname );
277
	}
278
279
	/**
280
	 * Remove specific items from the `revision history` array
281
	 * depending on the given criteria: array(
282
	 *   'from' => (int) <from>,
283
	 *   'to' =>   (int) <to>,
284
	 * )
285
	 *
286
	 * Also, it removes the file defined in each item.
287
	 *
288
	 * @param  number $media_id - media post ID
289
	 * @param  object $criteria - criteria to remove the items
290
	 * @param  array [$revision_history] - revision history array
291
	 * @return array `revision_history` array updated.
292
	 */
293
	public static function remove_items_from_revision_history( $media_id, $criteria, $revision_history ) {
294
		if ( ! isset ( $revision_history ) ) {
295
			$revision_history = self::get_revision_history( $media_id );
296
		}
297
298
		$from = $criteria['from'];
299
		$to = $criteria['to'] ? $criteria['to'] : ( $from + 1 );
300
301
		for ( $i = $from; $i < $to; $i++ ) {
302
			$removed_item = array_slice( $revision_history, $from, 1 );
303
			if ( ! $removed_item ) {
304
				break;
305
			}
306
307
			array_splice( $revision_history, $from, 1 );
308
			self::delete_media_history_file( $media_id, $removed_item[0]->file );
309
		}
310
311
		// override all history items
312
		delete_post_meta( $media_id, self::$WP_REVISION_HISTORY );
313
		$revision_history = array_reverse( $revision_history );
314
		foreach ( $revision_history as &$item ) {
315
			add_post_meta( $media_id, self::$WP_REVISION_HISTORY, $item );
316
		}
317
318
		return $revision_history;
319
	}
320
321
	/**
322
	 * Limit the number of items of the `revision_history` array.
323
	 * When the stack is overflowing the oldest item is remove from there (FIFO).
324
	 *
325
	 * @param  number $media_id - media post ID
326
	 * @param  number [$limit] - maximun amount of items. 20 as default.
327
	 * @return array items removed from `revision_history`
328
	 */
329
	public static function limit_revision_history( $media_id, $limit = null) {
330
		if ( is_null( $limit ) ) {
331
			$limit = self::$REVISION_HISTORY_MAXIMUM_AMOUNT;
332
		}
333
334
		$revision_history = self::get_revision_history( $media_id );
335
336
		$total = count( $revision_history );
337
338
		if ( $total < $limit ) {
339
			return array();
340
		}
341
342
		self::remove_items_from_revision_history(
343
			$media_id,
344
			array( 'from' => $limit, 'to' => $total ),
0 ignored issues
show
array('from' => $limit, 'to' => $total) is of type array<string,?,{"from":"?","to":"integer"}>, but the function expects a object.

It seems like the type of the argument is not accepted by the function/method which you are calling.

In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.

We suggest to add an explicit type cast like in the following example:

function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
Loading history...
345
			$revision_history
346
		);
347
348
		return self::get_revision_history( $media_id );
349
	}
350
351
	/**
352
	 * Remove the original file and clean the post metadata.
353
	 *
354
	 * @param  number $media_id - media post ID
355
	 */
356
	public static function clean_original_media( $media_id ) {
357
		$original_file = self::get_original_media( $media_id );
358
359
		if ( ! $original_file ) {
360
			return null;
361
		}
362
363
		self::delete_media_history_file( $media_id, $original_file->file );
364
		return delete_post_meta( $media_id, self::$WP_ORIGINAL_MEDIA );
365
	}
366
367
	/**
368
	 * Clean `revision_history` of the given $media_id. it means:
369
	 *   - remove all media files tied to the `revision_history` items.
370
	 *   - clean `revision_history` meta data.
371
	 *   - remove and clean the `original_media`
372
	 *
373
	 * @param  number $media_id - media post ID
374
	 * @return array results of removing these files
375
	 */
376
	public static function clean_revision_history( $media_id ) {
377
		self::clean_original_media( $media_id );
378
379
		$revision_history = self::get_revision_history( $media_id );
380
		$total = count( $revision_history );
381
		$updated_history = array();
382
383
		if ( $total < 1 ) {
384
			return $updated_history;
385
		}
386
387
		$updated_history = self::remove_items_from_revision_history(
388
			$media_id,
389
			array( 'from' => 0, 'to' => $total ),
0 ignored issues
show
array('from' => 0, 'to' => $total) is of type array<string,integer,{"f...teger","to":"integer"}>, but the function expects a object.

It seems like the type of the argument is not accepted by the function/method which you are calling.

In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.

We suggest to add an explicit type cast like in the following example:

function acceptsInteger($int) { }

$x = '123'; // string "123"

// Instead of
acceptsInteger($x);

// we recommend to use
acceptsInteger((integer) $x);
Loading history...
390
			$revision_history
391
		);
392
393
		return $updated_history;
394
	}
395
396
	/**
397
	 * Edit media item process:
398
	 *
399
	 * - update attachment file
400
	 * - preserve original media file
401
	 * - trace revision history
402
	 *
403
	 * @param  number $media_id - media post ID.
404
	 * @param  array  $file_array - temporal file.
405
	 * @return {Post|WP_Error} Updated media item or a WP_Error is something went wrong.
406
	 */
407
	public static function edit_media_file( $media_id, $file_array ) {
408
		$media_item         = get_post( $media_id );
409
		$has_original_media = self::get_original_media( $media_id );
410
411 View Code Duplication
		if ( ! $has_original_media ) {
412
413
			// The first time that the media is updated
414
			// the original media is stored into the revision_history.
415
			$snapshot = self::get_snapshot( $media_item );
416
			//phpcs:ignore WordPress.NamingConventions.ValidVariableName.UsedPropertyNotSnakeCase
417
			add_post_meta( $media_id, self::$WP_ORIGINAL_MEDIA, $snapshot, true );
418
		}
419
420
		// Save temporary file in the correct location.
421
		$uploaded_file = self::save_temporary_file( $file_array, $media_id );
422
423
		if ( is_wp_error( $uploaded_file ) ) {
424
			self::remove_tmp_file( $file_array );
425
			return $uploaded_file;
426
		}
427
428
		// Revision_history control.
429
		self::register_revision( $media_item, $uploaded_file, $has_original_media );
430
431
		$uploaded_path     = $uploaded_file['file'];
432
		$udpated_mime_type = $uploaded_file['type'];
433
		$was_updated       = update_attached_file( $media_id, $uploaded_path );
434
435
		if ( ! $was_updated ) {
436
			return WP_Error( 'update_error', 'Media update error' );
437
		}
438
439
		// Check maximum amount of revision_history before updating the attachment metadata.
440
		self::limit_revision_history( $media_id );
441
442
		$new_metadata = wp_generate_attachment_metadata( $media_id, $uploaded_path );
443
		wp_update_attachment_metadata( $media_id, $new_metadata );
444
445
		$edited_action = wp_update_post(
446
			(object) array(
447
				'ID'             => $media_id,
448
				'post_mime_type' => $udpated_mime_type,
449
			),
450
			true
451
		);
452
453
		if ( is_wp_error( $edited_action ) ) {
454
			return $edited_action;
455
		}
456
457
		return $media_item;
458
	}
459
}
460
461
// hook: clean revision history when the media item is deleted
462
function clean_revision_history( $media_id ) {
463
	Jetpack_Media::clean_revision_history( $media_id );
464
};
465
466
add_action( 'delete_attachment', 'clean_revision_history' );
467