← All changes | includes/functions/attachments.php +185 -0 7.9.2 → 8.0.5 View file →

		@@ -1,0 +1,185 @@
	1	+<?php
	2	+/**
	3	+ * Attachments Functions
	4	+ *
	5	+ * @package GamiPress\Attachments_Functions
	6	+ * @author GamiPress <[email protected]>, Ruben Garcia <[email protected]>
	7	+ * @since 1.7.1
	8	+ */
	9	+// Exit if accessed directly
	10	+if( !defined( 'ABSPATH' ) ) exit;
	11	+
	12	+/**
	13	+ * Attempt to find the attachment ID from the file URL or, if comes from external URL, attempt to download and insert it as attachment
	14	+ *
	15	+ * @since 1.7.0
	16	+ *
	17	+ * @param string $url Attachment URL
	18	+ *
	19	+ * @return int|WP_Error Attachment ID on success, WP_Error otherwise
	20	+ */
	21	+function gamipress_import_attachment( $url ) {
	22	+
	23	+ $site_url = site_url();
	24	+
	25	+ // If the URL is absolute, but does not contain address, then upload it assuming base_site_url
	26	+ if ( preg_match( '|^/[\w\W]+$|', $url ) )
	27	+ $url = rtrim( $site_url, '/' ) . $url;
	28	+
	29	+ $thumbnail_id = gamipress_get_attachment_id_from_url( $url );
	30	+
	31	+ if( $thumbnail_id ) {
	32	+ return $thumbnail_id;
	33	+ } else {
	34	+ // Remove protocol for following checks
	35	+ $site_url = str_replace( array( 'https://', 'http://' ), array( '', '' ), $site_url );
	36	+
	37	+ if( strpos( $url, $site_url ) === false )
	38	+ return gamipress_insert_external_attachment( $url );
	39	+ }
	40	+
	41	+ return new WP_Error( 'attachment_import_error', __('Attachment not found', 'gamipress') );
	42	+
	43	+}
	44	+
	45	+/**
	46	+ * Retrieves the attachment ID from the file URL
	47	+ *
	48	+ * @since 1.7.0
	49	+ *
	50	+ * @param string $url Attachment URL
	51	+ *
	52	+ * @return int|false Attachment ID on success, false otherwise
	53	+ */
	54	+function gamipress_get_attachment_id_from_url( $url ) {
	55	+
	56	+ global $wpdb;
	57	+
	58	+ $attachment = $wpdb->get_col( $wpdb->prepare( "SELECT ID FROM $wpdb->posts WHERE guid='%s';", $url ) );
	59	+
	60	+ return isset( $attachment[0] ) ? $attachment[0] : false;
	61	+
	62	+}
	63	+
	64	+/**
	65	+ * Attempt to create a new attachment from an external URL
	66	+ *
	67	+ * Taken from WordPress Importer tool
	68	+ *
	69	+ * @since 1.7.0
	70	+ *
	71	+ * @param string $url URL to fetch attachment from
	72	+ * @param array $post Attachment post details
	73	+ *
	74	+ * @return int|WP_Error Post ID on success, WP_Error otherwise
	75	+ */
	76	+function gamipress_insert_external_attachment( $url, $post = array() ) {
	77	+
	78	+ $upload = gamipress_fetch_remote_file( $url );
	79	+
	80	+ if ( is_wp_error( $upload ) )
	81	+ return $upload;
	82	+
	83	+ if ( $info = wp_check_filetype( $upload['file'] ) )
	84	+ $post['post_mime_type'] = $info['type'];
	85	+ else
	86	+ return new WP_Error( 'attachment_processing_error', __('Invalid file type', 'gamipress') );
	87	+
	88	+ $post['guid'] = $upload['url'];
	89	+
	90	+ // as per wp-admin/includes/upload.php
	91	+ $post_id = wp_insert_attachment( $post, $upload['file'] );
	92	+ wp_update_attachment_metadata( $post_id, wp_generate_attachment_metadata( $post_id, $upload['file'] ) );
	93	+
	94	+ return $post_id;
	95	+
	96	+}
	97	+
	98	+/**
	99	+ * Attempt to download a remote file attachment
	100	+ *
	101	+ * Taken from WordPress Importer tool
	102	+ *
	103	+ * @since 1.7.0
	104	+ *
	105	+ * @param string $url URL of item to fetch
	106	+ *
	107	+ * @return array|WP_Error Local file location details on success, WP_Error otherwise
	108	+ */
	109	+function gamipress_fetch_remote_file( $url ) {
	110	+
	111	+ if( ! filter_var( $url, FILTER_VALIDATE_URL ) ) {
	112	+ return new WP_Error( 'import_url_error', __('Invalid URL', 'gamipress') );
	113	+ }
	114	+
	115	+ // extract the file name and extension from the url
	116	+ $file_name = basename( $url );
	117	+
	118	+ // get placeholder file in the upload dir with a unique, sanitized filename
	119	+ $upload = wp_upload_bits( $file_name, 0, '', null );
	120	+
	121	+ if ( $upload['error'] )
	122	+ return new WP_Error( 'upload_dir_error', $upload['error'] );
	123	+
	124	+ // fetch the remote url and write it to the placeholder file
	125	+ $remote_response = wp_safe_remote_get( $url, array(
	126	+ 'timeout' => 300,
	127	+ 'stream' => true,
	128	+ 'filename' => $upload['file'],
	129	+ ) );
	130	+
	131	+ $headers = wp_remote_retrieve_headers( $remote_response );
	132	+
	133	+ // request failed
	134	+ if ( ! $headers ) {
	135	+ @unlink( $upload['file'] );
	136	+ return new WP_Error( 'import_file_error', __('Remote server did not respond', 'gamipress') );
	137	+ }
	138	+
	139	+ $remote_response_code = wp_remote_retrieve_response_code( $remote_response );
	140	+
	141	+ // make sure the fetch was successful
	142	+ if ( $remote_response_code != '200' ) {
	143	+ @unlink( $upload['file'] );
	144	+ return new WP_Error( 'import_file_error', sprintf( __('Remote server returned error response %1$d %2$s', 'gamipress'), esc_html( $remote_response_code ), get_status_header_desc($remote_response_code) ) );
	145	+ }
	146	+
	147	+ $filesize = filesize( $upload['file'] );
	148	+
	149	+ if ( isset( $headers['content-length'] ) && $filesize != $headers['content-length'] ) {
	150	+ @unlink( $upload['file'] );
	151	+ return new WP_Error( 'import_file_error', __('Remote file is incorrect size', 'gamipress') );
	152	+ }
	153	+
	154	+ if ( 0 == $filesize ) {
	155	+ @unlink( $upload['file'] );
	156	+ return new WP_Error( 'import_file_error', __('Zero size file downloaded', 'gamipress') );
	157	+ }
	158	+
	159	+ // To verify the file type
	160	+ $file_verify = wp_check_filetype_and_ext( $upload['file'], $file_name );
	161	+
	162	+ // To check extension
	163	+ if ( $file_verify['proper_filename_change_key'] ) {
	164	+ @unlink( $upload['file'] );
	165	+ return new WP_Error( 'security_error', __('The contents of the file do not match its extension.', 'gamipress') );
	166	+ }
	167	+
	168	+ // Multimedia MIMES allowed
	169	+ $allowed_mimes = array(
	170	+ 'image/jpeg',
	171	+ 'image/png',
	172	+ 'image/gif',
	173	+ 'image/webp',
	174	+ 'video/mp4',
	175	+ 'audio/mpeg'
	176	+ );
	177	+
	178	+ if ( ! in_array( $file_verify['type'], $allowed_mimes ) ) {
	179	+ @unlink( $upload['file'] );
	180	+ return new WP_Error( 'security_error', __('File type not allowed. Only multimedia files are accepted.', 'gamipress') );
	181	+ }
	182	+
	183	+ return $upload;
	184	+
	185	+}