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| 1 | <?php |
| 2 | /** |
| 3 | * HEIF/HEIF support for WordPress.com sites. |
| 4 | * |
| 5 | * @package automattic/jetpack-mu-plugins |
| 6 | */ |
| 7 | |
| 8 | /** |
| 9 | * Convert HEIF/HEIC uploads to JPEG. |
| 10 | * |
| 11 | * @param string $filename Path to the file. |
| 12 | * @return bool True if the file was converted, false otherwise. |
| 13 | */ |
| 14 | function jetpack_wpcom_maybe_convert_heif_to_jpg( $filename ) { |
| 15 | if ( ! class_exists( 'Photon_OpenCV' ) ) { |
| 16 | return false; |
| 17 | } |
| 18 | |
| 19 | if ( empty( $filename ) ) { |
| 20 | jetpack_wpcom_maybe_log_heif_to_jpg( |
| 21 | array( |
| 22 | 'message' => 'file path is empty', |
| 23 | 'severity' => 'error', |
| 24 | ) |
| 25 | ); |
| 26 | return false; |
| 27 | } |
| 28 | |
| 29 | if ( ! file_exists( $filename ) ) { |
| 30 | jetpack_wpcom_maybe_log_heif_to_jpg( |
| 31 | array( |
| 32 | 'message' => sprintf( 'file does not exist: %s', $filename ), |
| 33 | 'severity' => 'error', |
| 34 | ) |
| 35 | ); |
| 36 | return false; |
| 37 | } |
| 38 | |
| 39 | $valid_magic_bytes = array( |
| 40 | 'ftypheic', |
| 41 | 'ftypheix', |
| 42 | 'ftyphevc', |
| 43 | 'ftypheim', |
| 44 | 'ftypheis', |
| 45 | 'ftyphevm', |
| 46 | 'ftyphevs', |
| 47 | 'ftypmif1', |
| 48 | 'ftypmsf1', |
| 49 | ); |
| 50 | |
| 51 | // Read the first 8 bytes of the file. |
| 52 | // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents |
| 53 | $magic_bytes = file_get_contents( $filename, false, null, 4, 8 ); |
| 54 | if ( ! in_array( $magic_bytes, $valid_magic_bytes, true ) ) { |
| 55 | return false; |
| 56 | } |
| 57 | |
| 58 | // Log that we found a HEIF image. |
| 59 | jetpack_wpcom_maybe_log_heif_to_jpg( |
| 60 | array( |
| 61 | 'message' => sprintf( 'Found HEIF image: %s with magic bytes: %s', $filename, $magic_bytes ), |
| 62 | 'severity' => 'info', |
| 63 | ) |
| 64 | ); |
| 65 | |
| 66 | $img = new Photon_OpenCV(); |
| 67 | try { |
| 68 | $img->readimage( $filename ); |
| 69 | } catch ( Exception $e ) { |
| 70 | // Bad detection or malformed image |
| 71 | /** This action is documented in modules/widgets/social-media-icons.php */ |
| 72 | do_action( 'jetpack_bump_stats_extras', 'heif2jpg', 'failed-to-read' ); |
| 73 | jetpack_wpcom_maybe_log_heif_to_jpg( |
| 74 | array( |
| 75 | 'message' => sprintf( 'failed to read image: %s', $e->getMessage() ), |
| 76 | 'error_code' => $e->getCode(), |
| 77 | 'severity' => 'error', |
| 78 | ) |
| 79 | ); |
| 80 | return false; |
| 81 | } |
| 82 | |
| 83 | $img->setimageformat( 'jpg' ); |
| 84 | // This should never fail |
| 85 | $img->writeimage( $filename ); |
| 86 | |
| 87 | return true; |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Log information about HEIF/HEIC conversions. |
| 92 | * |
| 93 | * @param array $params The parameters to log. |
| 94 | * |
| 95 | * @return void |
| 96 | */ |
| 97 | function jetpack_wpcom_maybe_log_heif_to_jpg( $params = array() ) { |
| 98 | |
| 99 | if ( ! file_exists( WP_CONTENT_DIR . '/lib/log2logstash/log2logstash.php' ) ) { |
| 100 | return; |
| 101 | } |
| 102 | |
| 103 | require_once WP_CONTENT_DIR . '/lib/log2logstash/log2logstash.php'; |
| 104 | |
| 105 | $default = array( |
| 106 | 'feature' => 'heif2jpg', |
| 107 | 'blog_id' => get_current_blog_id(), |
| 108 | ); |
| 109 | |
| 110 | log2logstash( wp_parse_args( $params, $default ) ); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Attempts to convert HEIF/HEIC uploads to JPEG. |
| 115 | * |
| 116 | * @param array $file The file array. |
| 117 | * @return array The file array. |
| 118 | */ |
| 119 | function jetpack_wpcom_transparently_convert_heif_upload_to_jpg( $file ) { |
| 120 | if ( ! class_exists( 'Photon_OpenCV' ) ) { |
| 121 | return $file; |
| 122 | } |
| 123 | |
| 124 | // $file only has `name` and `tmp_name` when sideloading |
| 125 | $original_size = filesize( $file['tmp_name'] ); |
| 126 | |
| 127 | if ( false === jetpack_wpcom_maybe_convert_heif_to_jpg( $file['tmp_name'] ) ) { |
| 128 | return $file; |
| 129 | } |
| 130 | |
| 131 | // tmp_name is reused, cache needs to be cleared |
| 132 | clearstatcache(); |
| 133 | $new_file = array( |
| 134 | 'name' => pathinfo( $file['name'], PATHINFO_FILENAME ) . '.jpg', |
| 135 | 'type' => 'image/jpeg', |
| 136 | 'tmp_name' => $file['tmp_name'], |
| 137 | 'error' => 0, |
| 138 | 'size' => filesize( $file['tmp_name'] ), |
| 139 | ); |
| 140 | |
| 141 | /** This action is documented in modules/widgets/social-media-icons.php */ |
| 142 | do_action( 'jetpack_bump_stats_extras', 'heif2jpg', 'conversions' ); |
| 143 | /** This action is documented in modules/widgets/social-media-icons.php */ |
| 144 | do_action( 'jetpack_bump_stats_extras', 'heif2jpg', 'bytes-added', $new_file['size'] - $original_size ); |
| 145 | |
| 146 | return $new_file; |
| 147 | } |
| 148 | add_filter( 'wp_handle_upload_prefilter', 'jetpack_wpcom_transparently_convert_heif_upload_to_jpg' ); |
| 149 | add_filter( 'wp_handle_sideload_prefilter', 'jetpack_wpcom_transparently_convert_heif_upload_to_jpg' ); |
| 150 | |
| 151 | /** |
| 152 | * Add HEIF/HEIC to the list of supported mime types for sideloading. |
| 153 | * |
| 154 | * @param array $mimes The list of supported mime types. |
| 155 | * @return array The list of supported mime types. |
| 156 | */ |
| 157 | function jetpack_wpcom_add_heif_mimes_to_supported_sideload_types( $mimes ) { |
| 158 | if ( ! class_exists( 'Photon_OpenCV' ) ) { |
| 159 | return $mimes; |
| 160 | } |
| 161 | $mimes[] = 'image/heif'; |
| 162 | $mimes[] = 'image/heic'; |
| 163 | return $mimes; |
| 164 | } |
| 165 | add_filter( 'jetpack_supported_media_sideload_types', 'jetpack_wpcom_add_heif_mimes_to_supported_sideload_types' ); |
| 166 | |
| 167 | /** |
| 168 | * Add HEIF/HEIC to the list of supported mime types for uploads. |
| 169 | * |
| 170 | * @param array $mimes The list of supported mime types. |
| 171 | * @return array The list of supported mime types. |
| 172 | */ |
| 173 | function jetpack_wpcom_add_heif_mimes_to_supported_upload_types( $mimes ) { |
| 174 | if ( ! class_exists( 'Photon_OpenCV' ) ) { |
| 175 | return $mimes; |
| 176 | } |
| 177 | |
| 178 | $mimes['heif'] = 'image/heif'; |
| 179 | |
| 180 | // HEIC is supported by default, so maybe we don't need it anymore. |
| 181 | // See https://github.com/WordPress/wordpress-develop/blob/80b7747ef165dd5ed0150003a8c2f957f097609e/src/wp-includes/functions.php#L3416. |
| 182 | $mimes['heic'] = 'image/heic'; |
| 183 | return $mimes; |
| 184 | } |
| 185 | add_filter( 'upload_mimes', 'jetpack_wpcom_add_heif_mimes_to_supported_upload_types' ); |
| 186 | |
| 187 | /** |
| 188 | * Prevent WordPress from blocking HEIF/HEIC uploads in REST API. |
| 189 | * |
| 190 | * This allows HEIF/HEIC files to pass through the REST API validation |
| 191 | * so they can be converted to JPEG by our conversion filter. |
| 192 | * |
| 193 | * @param bool $check_mime Whether to check the mime type. |
| 194 | * @param string|null $mime_type The mime type being uploaded. |
| 195 | * @return bool |
| 196 | */ |
| 197 | function jetpack_wpcom_allow_heif_uploads_in_rest_api( $check_mime, $mime_type ) { |
| 198 | if ( wp_is_heic_image_mime_type( $mime_type ) ) { |
| 199 | return false; |
| 200 | } |
| 201 | |
| 202 | return $check_mime; |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Add the HEIF/HEIC upload filter on REST API initialization. |
| 207 | */ |
| 208 | function jetpack_wpcom_add_heif_rest_api_filter() { |
| 209 | add_filter( 'wp_prevent_unsupported_mime_type_uploads', 'jetpack_wpcom_allow_heif_uploads_in_rest_api', 10, 2 ); |
| 210 | } |
| 211 | add_action( 'rest_api_init', 'jetpack_wpcom_add_heif_rest_api_filter' ); |
| 212 | |
| 213 | /** |
| 214 | * Disable HEIC upload error in plupload settings for WordPress.com. |
| 215 | * |
| 216 | * @param array $defaults The default plupload settings. |
| 217 | * @return array The modified settings. |
| 218 | */ |
| 219 | function jetpack_wpcom_disable_heic_plupload_error( $defaults ) { |
| 220 | $defaults['heic_upload_error'] = false; |
| 221 | return $defaults; |
| 222 | } |
| 223 | add_filter( 'plupload_default_settings', 'jetpack_wpcom_disable_heic_plupload_error' ); |