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<?php |
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/** |
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* Imsanity AJAX functions. |
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* |
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* @package Imsanity |
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*/ |
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|
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add_action( 'wp_ajax_imsanity_get_images', 'imsanity_get_images' ); |
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add_action( 'wp_ajax_imsanity_resize_image', 'imsanity_resize_image' ); |
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|
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/** |
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* Verifies that the current user has administrator permission and, if not, |
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* renders a json warning and dies |
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*/ |
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function imsanity_verify_permission() { |
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if ( ! current_user_can( 'activate_plugins' ) ) { |
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die( |
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json_encode( |
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array( |
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'success' => false, |
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'message' => esc_html__( 'Administrator permission is required', 'imsanity' ), |
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) |
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) |
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); |
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} |
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if ( ! wp_verify_nonce( $_REQUEST['_wpnonce'], 'imsanity-bulk' ) ) { |
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die( |
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json_encode( |
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array( |
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'success' => false, |
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'message' => esc_html__( 'Access token has expired, please reload the page.', 'imsanity' ), |
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) |
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) |
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); |
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} |
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} |
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|
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|
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/** |
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* Searches for up to 250 images that are candidates for resize and renders them |
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* to the browser as a json array, then dies |
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*/ |
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function imsanity_get_images() { |
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imsanity_verify_permission(); |
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|
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global $wpdb; |
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$offset = 0; |
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$limit = apply_filters( 'imsanity_attachment_query_limit', 3000 ); |
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$results = array(); |
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$maxw = imsanity_get_option( 'imsanity_max_width', IMSANITY_DEFAULT_MAX_WIDTH ); |
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$maxh = imsanity_get_option( 'imsanity_max_height', IMSANITY_DEFAULT_MAX_HEIGHT ); |
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$count = 0; |
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|
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$images = $wpdb->get_results( $wpdb->prepare( "SELECT metas.meta_value as file_meta,metas.post_id as ID FROM $wpdb->postmeta metas INNER JOIN $wpdb->posts posts ON posts.ID = metas.post_id WHERE posts.post_type = 'attachment' AND posts.post_mime_type LIKE %s AND posts.post_mime_type != 'image/bmp' AND metas.meta_key = '_wp_attachment_metadata' ORDER BY ID DESC LIMIT %d,%d", '%image%', $offset, $limit ) ); |
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while ( $images ) { |
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|
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foreach ( $images as $image ) { |
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$imagew = false; |
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$imageh = false; |
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|
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$meta = unserialize( $image->file_meta ); |
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|
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// If "noresize" is included in the filename then we will bypass imsanity scaling. |
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if ( ! empty( $meta['file'] ) && strpos( $meta['file'], 'noresize' ) !== false ) { |
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continue; |
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} |
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|
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// Let folks filter the allowed mime-types for resizing. |
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$allowed_types = apply_filters( 'imsanity_allowed_mimes', array( 'image/png', 'image/gif', 'image/jpeg' ), $meta['file'] ); |
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if ( is_string( $allowed_types ) ) { |
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$allowed_types = array( $allowed_types ); |
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} elseif ( ! is_array( $allowed_types ) ) { |
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$allowed_types = array(); |
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} |
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$ftype = imsanity_quick_mimetype( $meta['file'] ); |
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if ( ! in_array( $ftype, $allowed_types, true ) ) { |
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continue; |
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} |
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|
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if ( imsanity_get_option( 'imsanity_deep_scan', false ) ) { |
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$file_path = imsanity_attachment_path( $meta, $image->ID, '', false ); |
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if ( $file_path ) { |
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list( $imagew, $imageh ) = getimagesize( $file_path ); |
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} |
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} |
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if ( empty( $imagew ) || empty( $imageh ) ) { |
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$imagew = $meta['width']; |
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$imageh = $meta['height']; |
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} |
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|
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if ( $imagew > $maxw || $imageh > $maxh ) { |
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$count++; |
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|
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$results[] = array( |
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'id' => $image->ID, |
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'width' => $imagew, |
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'height' => $imageh, |
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'file' => $meta['file'], |
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); |
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} |
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|
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// Make sure we only return a limited number of records so we don't overload the ajax features. |
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if ( $count >= IMSANITY_AJAX_MAX_RECORDS ) { |
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break 2; |
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} |
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} |
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$offset += $limit; |
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$images = $wpdb->get_results( $wpdb->prepare( "SELECT metas.meta_value as file_meta,metas.post_id as ID FROM $wpdb->postmeta metas INNER JOIN $wpdb->posts posts ON posts.ID = metas.post_id WHERE posts.post_type = 'attachment' AND posts.post_mime_type LIKE %s AND posts.post_mime_type != 'image/bmp' AND metas.meta_key = '_wp_attachment_metadata' ORDER BY ID DESC LIMIT %d,%d", '%image%', $offset, $limit ) ); |
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} // endwhile |
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die( json_encode( $results ) ); |
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} |
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|
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/** |
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* Resizes the image with the given id according to the configured max width and height settings |
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* renders a json response indicating success/failure and dies |
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*/ |
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function imsanity_resize_image() { |
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imsanity_verify_permission(); |
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|
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global $wpdb; |
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|
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$id = (int) $_POST['id']; |
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|
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if ( ! $id ) { |
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die( |
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json_encode( |
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array( |
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'success' => false, |
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'message' => esc_html__( 'Missing ID Parameter', 'imsanity' ), |
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) |
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) |
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); |
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} |
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|
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$meta = wp_get_attachment_metadata( $id ); |
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|
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if ( $meta && is_array( $meta ) ) { |
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$uploads = wp_upload_dir(); |
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$oldpath = imsanity_attachment_path( $meta['file'], $id, '', false ); |
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if ( empty( $oldpath ) || ! is_writable( $oldpath ) ) { |
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/* translators: %s: File-name of the image */ |
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$msg = sprintf( esc_html__( '%s is not writable', 'imsanity' ), $meta['file'] ); |
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die( |
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json_encode( |
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array( |
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'success' => false, |
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'message' => $msg, |
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) |
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) |
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); |
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} |
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|
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$maxw = imsanity_get_option( 'imsanity_max_width', IMSANITY_DEFAULT_MAX_WIDTH ); |
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$maxh = imsanity_get_option( 'imsanity_max_height', IMSANITY_DEFAULT_MAX_HEIGHT ); |
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|
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// method one - slow but accurate, get file size from file itself. |
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list( $oldw, $oldh ) = getimagesize( $oldpath ); |
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// method two - get file size from meta, fast but resize will fail if meta is out of sync. |
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if ( ! $oldw || ! $oldh ) { |
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$oldw = $meta['width']; |
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$oldh = $meta['height']; |
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} |
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|
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if ( ( $oldw > $maxw && $maxw > 0 ) || ( $oldh > $maxh && $maxh > 0 ) ) { |
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$quality = imsanity_get_option( 'imsanity_quality', IMSANITY_DEFAULT_QUALITY ); |
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|
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if ( $maxw > 0 && $maxh > 0 && $oldw >= $maxw && $oldh >= $maxh && ( $oldh > $maxh || $oldw > $maxw ) && apply_filters( 'imsanity_crop_image', false ) ) { |
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$neww = $maxw; |
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$newh = $maxh; |
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} else { |
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list( $neww, $newh ) = wp_constrain_dimensions( $oldw, $oldh, $maxw, $maxh ); |
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} |
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|
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$resizeresult = imsanity_image_resize( $oldpath, $neww, $newh, apply_filters( 'imsanity_crop_image', false ), null, null, $quality ); |
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|
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if ( $resizeresult && ! is_wp_error( $resizeresult ) ) { |
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$newpath = $resizeresult; |
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|
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if ( $newpath !== $oldpath && is_file( $newpath ) && filesize( $newpath ) < filesize( $oldpath ) ) { |
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// we saved some file space. remove original and replace with resized image. |
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unlink( $oldpath ); |
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rename( $newpath, $oldpath ); |
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$meta['width'] = $neww; |
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$meta['height'] = $newh; |
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|
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wp_update_attachment_metadata( $id, $meta ); |
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|
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$results = array( |
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'success' => true, |
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'id' => $id, |
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/* translators: %s: File-name of the image */ |
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'message' => sprintf( esc_html__( 'OK: %s', 'imsanity' ), $oldpath ), |
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); |
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} elseif ( $newpath !== $oldpath ) { |
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// the resized image is actually bigger in filesize (most likely due to jpg quality). |
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// keep the old one and just get rid of the resized image. |
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if ( is_file( $newpath ) ) { |
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unlink( $newpath ); |
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} |
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$results = array( |
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'success' => false, |
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'id' => $id, |
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/* translators: 1: File-name of the image 2: the error message, translated elsewhere */ |
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'message' => sprintf( esc_html__( 'ERROR: %1$s (%2$s)', 'imsanity' ), $oldpath, esc_html__( 'Resized image was larger than the original', 'imsanity' ) ), |
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); |
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} else { |
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$results = array( |
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'success' => false, |
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'id' => $id, |
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/* translators: 1: File-name of the image 2: the error message, translated elsewhere */ |
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'message' => sprintf( esc_html__( 'ERROR: %1$s (%2$s)', 'imsanity' ), $oldpath, esc_html__( 'Unknown error, resizing function returned the same filename', 'imsanity' ) ), |
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); |
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} |
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} elseif ( false === $resizeresult ) { |
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$results = array( |
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'success' => false, |
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'id' => $id, |
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/* translators: 1: File-name of the image 2: the error message, translated elsewhere */ |
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'message' => sprintf( esc_html__( 'ERROR: %1$s (%2$s)', 'imsanity' ), $oldpath, esc_html__( 'wp_get_image_editor missing', 'imsanity' ) ), |
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); |
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} else { |
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$results = array( |
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'success' => false, |
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'id' => $id, |
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/* translators: 1: File-name of the image 2: the error message, translated elsewhere */ |
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'message' => sprintf( esc_html__( 'ERROR: %1$s (%2$s)', 'imsanity' ), $oldpath, htmlentities( $resizeresult->get_error_message() ) ), |
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); |
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} |
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} else { |
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$results = array( |
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'success' => true, |
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'id' => $id, |
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/* translators: %s: File-name of the image */ |
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'message' => sprintf( esc_html__( 'SKIPPED: %s (Resize not required)', 'imsanity' ), $oldpath ) . " -- $oldw x $oldh", |
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); |
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if ( empty( $meta['width'] ) || empty( $meta['height'] ) ) { |
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if ( empty( $meta['width'] ) || $meta['width'] > $oldw ) { |
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$meta['width'] = $oldw; |
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} |
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if ( empty( $meta['height'] ) || $meta['height'] > $oldh ) { |
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$meta['height'] = $oldh; |
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} |
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wp_update_attachment_metadata( $id, $meta ); |
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} |
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} |
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} else { |
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$results = array( |
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'success' => false, |
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'id' => $id, |
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/* translators: %s: ID number of the image */ |
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'message' => sprintf( esc_html__( 'ERROR: Attachment with ID of %d not found', 'imsanity' ), intval( $id ) ), |
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); |
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} |
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|
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// If there is a quota we need to reset the directory size cache so it will re-calculate. |
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delete_transient( 'dirsize_cache' ); |
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|
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die( json_encode( $results ) ); |
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} |
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|
