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wp-content/plugins/svg-support/functions/attachment.php
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328
wp-content/plugins/svg-support/functions/attachment.php
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<?php
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/**
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* Display SVG in attachment modal
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*/
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if ( ! defined( 'ABSPATH' ) ) {
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exit; // Exit if accessed directly
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}
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function bodhi_svgs_response_for_svg( $response, $attachment, $meta ) {
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if ( $response['mime'] == 'image/svg+xml' && empty( $response['sizes'] ) ) {
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$svg_path = get_attached_file( $attachment->ID );
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if ( ! file_exists( $svg_path ) ) {
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// If SVG is external, use the URL instead of the path
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$svg_path = $response['url'];
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}
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$dimensions = bodhi_svgs_get_dimensions( $svg_path );
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$response['sizes'] = array(
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'full' => array(
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'url' => $response['url'],
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'width' => $dimensions->width,
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'height' => $dimensions->height,
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'orientation' => $dimensions->width > $dimensions->height ? 'landscape' : 'portrait'
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)
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);
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}
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return $response;
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}
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add_filter( 'wp_prepare_attachment_for_js', 'bodhi_svgs_response_for_svg', 10, 3 );
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function bodhi_svgs_get_dimensions( $svg ) {
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$svg = simplexml_load_file( $svg );
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if ( $svg === FALSE ) {
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$width = '0';
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$height = '0';
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} else {
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$attributes = $svg->attributes();
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$width = (string) $attributes->width;
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$height = (string) $attributes->height;
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}
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return (object) array( 'width' => $width, 'height' => $height );
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}
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/**
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* Generate attachment metadata (Thanks @surml)
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* Fixes Illegal String Offset Warning for Height & Width
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*/
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function bodhi_svgs_generate_svg_attachment_metadata( $metadata, $attachment_id ) {
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$mime = get_post_mime_type( $attachment_id );
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if ( $mime == 'image/svg+xml' ) {
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$svg_path = get_attached_file( $attachment_id );
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$upload_dir = wp_upload_dir();
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// get the path relative to /uploads/ - found no better way:
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$relative_path = str_replace($upload_dir['basedir'], '', $svg_path);
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$filename = basename( $svg_path );
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$dimensions = bodhi_svgs_get_dimensions( $svg_path );
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$metadata = array(
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'width' => intval($dimensions->width),
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'height' => intval($dimensions->height),
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'file' => $filename
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);
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$height = intval($dimensions->height);
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$width = intval($dimensions->width);
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// Might come in handy to create the sizes array too - But it's not needed for this workaround! Always links to original svg-file => Hey, it's a vector graphic! ;)
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$sizes = array();
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foreach ( get_intermediate_image_sizes() as $s ) {
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$sizes[$s] = array( 'width' => '', 'height' => '', 'crop' => false );
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// for svg with width and height set, we need to adjust the thumbnails accordingly
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if ( $width !== 0 && $height !== 0 ) {
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// follow width of request size e.g. 150, 300 etc..
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if ( isset( $_wp_additional_image_sizes[$s]['width'] ) ) {
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$width_current_size = intval( $_wp_additional_image_sizes[$s]['width'] );
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} else {
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$width_current_size = get_option( "{$s}_size_w" );
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}
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// we have dimensions available. Use them
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if ( $width > $height ) {
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$ratio = round($width / $height,2);
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$new_height = round($width_current_size / $ratio);
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} else {
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$ratio = round($height / $width,2);
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$new_height = round($width_current_size * $ratio);
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}
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$sizes[$s]['width'] = $width_current_size;
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$sizes[$s]['height'] = $new_height;
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// svgs can't be cropped by WP
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$sizes[$s]['crop'] = false;
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} else {
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// no change is needed
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if ( isset( $_wp_additional_image_sizes[$s]['width'] ) ) {
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$sizes[$s]['width'] = intval( $_wp_additional_image_sizes[$s]['width'] ); // For theme-added sizes
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} else {
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$sizes[$s]['width'] = get_option( "{$s}_size_w" ); // For default sizes set in options
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}
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if ( isset( $_wp_additional_image_sizes[$s]['height'] ) ) {
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$sizes[$s]['height'] = intval( $_wp_additional_image_sizes[$s]['height'] ); // For theme-added sizes
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} else {
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$sizes[$s]['height'] = get_option( "{$s}_size_h" ); // For default sizes set in options
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}
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if ( isset( $_wp_additional_image_sizes[$s]['crop'] ) ) {
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$sizes[$s]['crop'] = intval( $_wp_additional_image_sizes[$s]['crop'] ); // For theme-added sizes
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} else {
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$sizes[$s]['crop'] = get_option( "{$s}_crop" ); // For default sizes set in options
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}
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}
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$sizes[$s]['file'] = $filename;
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$sizes[$s]['mime-type'] = 'image/svg+xml';
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}
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$metadata['sizes'] = $sizes;
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}
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return $metadata;
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}
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add_filter( 'wp_generate_attachment_metadata', 'bodhi_svgs_generate_svg_attachment_metadata', 10, 3 );
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/*
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* SVG Sanitization
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* Only triggers when its enabled by admin
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*/
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function bodhi_svgs_sanitize( $file ){
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global $sanitizer;
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$sanitizer->setAllowedTags( new bodhi_svg_tags() );
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$sanitizer->setAllowedAttrs( new bodhi_svg_attributes() );
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$dirty = file_get_contents( $file );
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// try to decode if gzipped is enabled
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if ( $is_zipped = bodhi_svgs_is_gzipped( $dirty ) ) {
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$dirty = gzdecode( $dirty );
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// return on failure, since we can't read file
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if ( $dirty === false ) {
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return false;
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}
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}
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// remove remote references since they are dangerous and lead to injection
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$sanitizer->removeRemoteReferences(true);
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// enable minify in library if its enabled in admin panel
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bodhi_svgs_minify();
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$clean = $sanitizer->sanitize( $dirty );
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if ( $clean === false ) {
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return false;
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}
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// if we were gzipped, we need to re-zip
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if ( $is_zipped ) {
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$clean = gzencode( $clean );
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}
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file_put_contents( $file, $clean );
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return true;
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}
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function bodhi_svgs_minify() {
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global $bodhi_svgs_options;
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global $sanitizer;
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if ( !empty($bodhi_svgs_options['minify_svg']) && $bodhi_svgs_options['minify_svg'] === 'on' ) {
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$sanitizer->minify(true);
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}
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}
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function bodhi_svgs_is_gzipped( $contents ) {
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if ( function_exists( 'mb_strpos' ) ) {
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return 0 === mb_strpos( $contents, "\x1f" . "\x8b" . "\x08" );
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} else {
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return 0 === strpos( $contents, "\x1f" . "\x8b" . "\x08" );
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}
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}
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function bodhi_svgs_sanitize_svg( $file ) {
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global $bodhi_svgs_options;
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if ( !empty($bodhi_svgs_options['sanitize_svg']) && $bodhi_svgs_options['sanitize_svg'] === 'on' && $bodhi_svgs_options['sanitize_on_upload_roles'][0] != "none" ) {
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if ( $file['type'] === 'image/svg+xml' ) {
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$sanitize_on_upload_roles_array = array();
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$should_sanitize_svg = array();
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$sanitize_on_upload_roles_array = (array) $bodhi_svgs_options['sanitize_on_upload_roles'];
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$user = wp_get_current_user();
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$current_user_roles = ( array ) $user->roles;
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$should_sanitize_svg = array_intersect($sanitize_on_upload_roles_array, $current_user_roles);
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if( empty($should_sanitize_svg) ) {
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// Do nothing Here
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}
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elseif ( ! bodhi_svgs_sanitize( $file['tmp_name'] ) ) {
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$file['error'] = __( "Sorry, this file couldn't be sanitized for security reasons and wasn't uploaded",
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'safe-svg' );
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}
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}
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}
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return $file;
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}
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// Sanitize svg if user has enabled option
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add_filter( 'wp_handle_upload_prefilter', 'bodhi_svgs_sanitize_svg' );
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// Fix image widget PHP warnings
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function bodhi_svgs_get_attachment_metadata( $data ) {
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$res = $data;
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if ( !isset( $data['width'] ) || !isset( $data['height'] ) ) {
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$res = false;
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}
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return $res;
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}
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// add_filter( 'wp_get_attachment_metadata' , 'bodhi_svgs_get_attachment_metadata' );
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// Commented this out 20200307 because it was stripping metadata from other attachments as well. Need to make this target only SVG attachments.
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// remove srcset for svg images
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function bodhi_svgs_disable_srcset( $sources ) {
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$first_element = reset($sources);
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if ( isset($first_element) && !empty($first_element['url']) ) {
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$ext = pathinfo(reset($sources)['url'], PATHINFO_EXTENSION);
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if ( $ext == 'svg' ) {
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// return empty array
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$sources = array();
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return $sources;
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} else {
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return $sources;
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}
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} else {
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return $sources;
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}
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}
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add_filter( 'wp_calculate_image_srcset', 'bodhi_svgs_disable_srcset' );
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// fix for division by zero error for SVGs
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// proposed by starsis
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// https://github.com/WordPress/gutenberg/issues/36603
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function bodhi_svgs_dimension_fallback( $image, $attachment_id, $size, $icon ) {
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// only manipulate for svgs
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if ( get_post_mime_type($attachment_id) == 'image/svg+xml' ) {
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if ( isset($image[1]) && $image[1] === 0 ) {
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$image[1] = 1;
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}
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if ( isset($image[2]) && $image[2] === 0 ) {
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$image[2] = 1;
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}
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}
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return $image;
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}
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add_filter( 'wp_get_attachment_image_src', 'bodhi_svgs_dimension_fallback', 10, 4 );
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