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Linux v11800 5.3.0-1023-aws #25~18.04.1-Ubuntu SMP Fri Jun 5 15:19:18 UTC 2020 aarch64
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| Current File : /storage/v11800/affypharma/public_html/wp-content/plugins/auxin-elements/includes/classes/class-auxin-svg-support.php |
<?php
/**
* Class Auxin_SVG_Support
*/
class Auxin_SVG_Support {
protected $sanitizer;
/**
* Instance of this class.
*
* @var object
*/
protected static $instance = null;
/**
* Return an instance of this class.
*
* @return object A single instance of this class.
*/
public static function get_instance() {
// If the single instance hasn't been set, set it now.
if ( null == self::$instance ) {
self::$instance = new self;
}
return self::$instance;
}
/**
* Set up the class
*/
public function __construct() {
$this->sanitizer = new enshrined\svgSanitize\Sanitizer();
$this->sanitizer->minify( true );
add_filter( 'upload_mimes', array( $this, 'allow_svg' ) );
add_filter( 'wp_handle_upload_prefilter', array( $this, 'check_for_svg' ) );
add_filter( 'wp_check_filetype_and_ext', array( $this, 'fix_mime_type_svg' ), 75, 4 );
add_filter( 'wp_prepare_attachment_for_js', array( $this, 'fix_admin_preview' ), 10, 3 );
add_filter( 'wp_get_attachment_image_src', array( $this, 'one_pixel_fix' ), 10, 4 );
add_filter( 'admin_post_thumbnail_html', array( $this, 'featured_image_fix' ), 10, 3 );
add_action( 'get_image_tag', array( $this, 'get_image_tag_override' ), 10, 6 );
add_filter( 'wp_generate_attachment_metadata', array( $this, 'skip_svg_regeneration' ), 10, 2 );
add_filter( 'wp_get_attachment_metadata', array( $this, 'metadata_error_fix' ), 10, 2 );
add_filter( 'wp_get_attachment_image_attributes', array( $this, 'fix_direct_image_output' ), 10, 2 );
}
/**
* Allow SVG Uploads
*
* @param $mimes
*
* @return mixed
*/
public function allow_svg( $mimes ) {
$mimes['svg'] = 'image/svg+xml';
$mimes['svgz'] = 'image/svg+xml';
return $mimes;
}
/**
* Fixes the issue in WordPress 4.7.1 being unable to correctly identify SVGs
*
* @thanks @lewiscowles
*
* @param null $data
* @param null $file
* @param null $filename
* @param null $mimes
*
* @return null
*/
public function fix_mime_type_svg( $data = null, $file = null, $filename = null, $mimes = null ) {
$ext = isset( $data['ext'] ) ? $data['ext'] : '';
if ( strlen( $ext ) < 1 ) {
$exploded = explode( '.', $filename );
$ext = strtolower( end( $exploded ) );
}
if ( $ext === 'svg' ) {
$data['type'] = 'image/svg+xml';
$data['ext'] = 'svg';
} elseif ( $ext === 'svgz' ) {
$data['type'] = 'image/svg+xml';
$data['ext'] = 'svgz';
}
return $data;
}
/**
* Check if the file is an SVG, if so handle appropriately
*
* @param $file
*
* @return mixed
*/
public function check_for_svg( $file ) {
if ( $file['type'] === 'image/svg+xml' && ! class_exists( 'safe_svg' ) ) {
if ( ! $this->sanitize( $file['tmp_name'] ) ) {
$file['error'] = __( "Sorry, this file couldn't be sanitized so for security reasons wasn't uploaded",
'auxin-elements' );
}
}
return $file;
}
/**
* Sanitize the SVG
*
* @param $file
*
* @return bool|int
*/
protected function sanitize( $file ) {
$dirty = file_get_contents( $file );
// Is the SVG gzipped? If so we try and decode the string
if ( $is_zipped = $this->is_gzipped( $dirty ) ) {
$dirty = gzdecode( $dirty );
// If decoding fails, bail as we're not secure
if ( $dirty === false ) {
return false;
}
}
/**
* Load extra filters to allow devs to access the safe tags and attrs by themselves.
*/
$this->sanitizer->setAllowedTags( new Auxin_SVG_Support_AllowedTags() );
$this->sanitizer->setAllowedAttrs( new Auxin_SVG_Support_AllowedAttributes() );
$clean = $this->sanitizer->sanitize( $dirty );
if ( $clean === false ) {
return false;
}
// If we were gzipped, we need to re-zip
if ( $is_zipped ) {
$clean = gzencode( $clean );
}
file_put_contents( $file, $clean );
return true;
}
/**
* Check if the contents are gzipped
*
* @param $contents
*
* @return bool
*/
protected function is_gzipped( $contents ) {
if ( function_exists( 'mb_strpos' ) ) {
return 0 === mb_strpos( $contents, "\x1f" . "\x8b" . "\x08" );
} else {
return 0 === strpos( $contents, "\x1f" . "\x8b" . "\x08" );
}
}
/**
* Filters the attachment data prepared for JavaScript to add the sizes array to the response
*
* @param array $response Array of prepared attachment data.
* @param int|object $attachment Attachment ID or object.
* @param array $meta Array of attachment meta data.
*
* @return array
*/
public function fix_admin_preview( $response, $attachment, $meta ) {
if ( $response['mime'] == 'image/svg+xml' ) {
$dimensions = $this->svg_dimensions( get_attached_file( $attachment->ID ) );
if ( $dimensions ) {
$response = array_merge( $response, $dimensions );
}
$possible_sizes = apply_filters( 'image_size_names_choose', array(
'full' => __( 'Full Size' ),
'thumbnail' => __( 'Thumbnail' ),
'medium' => __( 'Medium' ),
'large' => __( 'Large' ),
) );
$sizes = array();
foreach ( $possible_sizes as $size => $label ) {
$default_height = 2000;
$default_width = 2000;
if ( 'full' === $size && $dimensions ) {
$default_height = $dimensions['height'];
$default_width = $dimensions['width'];
}
$sizes[ $size ] = array(
'height' => get_option( "{$size}_size_w", $default_height ),
'width' => get_option( "{$size}_size_h", $default_width ),
'url' => $response['url'],
'orientation' => 'portrait',
);
}
$response['sizes'] = $sizes;
$response['icon'] = $response['url'];
}
return $response;
}
/**
* Filters the image src result.
* Here we're gonna spoof the image size and set it to 100 width and height
*
* @param array|false $image Either array with src, width & height, icon src, or false.
* @param int $attachment_id Image attachment ID.
* @param string|array $size Size of image. Image size or array of width and height values
* (in that order). Default 'thumbnail'.
* @param bool $icon Whether the image should be treated as an icon. Default false.
*
* @return array
*/
public function one_pixel_fix( $image, $attachment_id, $size, $icon ) {
if ( get_post_mime_type( $attachment_id ) == 'image/svg+xml' ) {
$image['1'] = false;
$image['2'] = false;
}
return $image;
}
/**
* If the featured image is an SVG we wrap it in an SVG class so we can apply our CSS fix.
*
* @param string $content Admin post thumbnail HTML markup.
* @param int $post_id Post ID.
* @param int $thumbnail_id Thumbnail ID.
*
* @return string
*/
public function featured_image_fix( $content, $post_id, $thumbnail_id ) {
$mime = get_post_mime_type( $thumbnail_id );
if ( 'image/svg+xml' === $mime ) {
$content = sprintf( '<span class="svg">%s</span>', $content );
}
return $content;
}
/**
* Override the default height and width string on an SVG
*
* @param string $html HTML content for the image.
* @param int $id Attachment ID.
* @param string $alt Alternate text.
* @param string $title Attachment title.
* @param string $align Part of the class name for aligning the image.
* @param string|array $size Size of image. Image size or array of width and height values (in that order).
* Default 'medium'.
*
* @return mixed
*/
public function get_image_tag_override( $html, $id, $alt, $title, $align, $size ) {
$mime = get_post_mime_type( $id );
if ( 'image/svg+xml' === $mime ) {
if ( is_array( $size ) ) {
$width = $size[0];
$height = $size[1];
} elseif ( 'full' == $size && $dimensions = $this->svg_dimensions( get_attached_file( $id ) ) ) {
$width = $dimensions['width'];
$height = $dimensions['height'];
} else {
$width = get_option( "{$size}_size_w", false );
$height = get_option( "{$size}_size_h", false );
}
if ( $height && $width ) {
$html = str_replace( 'width="1" ', sprintf( 'width="%s" ', $width ), $html );
$html = str_replace( 'height="1" ', sprintf( 'height="%s" ', $height ), $html );
} else {
$html = str_replace( 'width="1" ', '', $html );
$html = str_replace( 'height="1" ', '', $html );
}
$html = str_replace( '/>', ' role="img" />', $html );
}
return $html;
}
/**
* Skip regenerating SVGs
*
* @param int $attachment_id Attachment Id to process.
* @param string $file Filepath of the Attached image.
*
* @return mixed Metadata for attachment.
*/
public function skip_svg_regeneration( $metadata, $attachment_id ) {
$mime = get_post_mime_type( $attachment_id );
if ( 'image/svg+xml' === $mime ) {
$additional_image_sizes = wp_get_additional_image_sizes();
$svg_path = get_attached_file( $attachment_id );
$upload_dir = wp_upload_dir();
// get the path relative to /uploads/ - found no better way:
$relative_path = str_replace( $upload_dir['basedir'], '', $svg_path );
$filename = basename( $svg_path );
$dimensions = $this->svg_dimensions( $svg_path );
if ( ! $dimensions ) {
return $metadata;
}
$metadata = array(
'width' => intval( $dimensions['width'] ),
'height' => intval( $dimensions['height'] ),
'file' => $relative_path
);
// Might come 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! ;)
$sizes = array();
foreach ( get_intermediate_image_sizes() as $s ) {
$sizes[ $s ] = array( 'width' => '', 'height' => '', 'crop' => false );
if ( isset( $additional_image_sizes[ $s ]['width'] ) ) {
// For theme-added sizes
$sizes[ $s ]['width'] = intval( $additional_image_sizes[ $s ]['width'] );
} else {
// For default sizes set in options
$sizes[ $s ]['width'] = get_option( "{$s}_size_w" );
}
if ( isset( $additional_image_sizes[ $s ]['height'] ) ) {
// For theme-added sizes
$sizes[ $s ]['height'] = intval( $additional_image_sizes[ $s ]['height'] );
} else {
// For default sizes set in options
$sizes[ $s ]['height'] = get_option( "{$s}_size_h" );
}
if ( isset( $additional_image_sizes[ $s ]['crop'] ) ) {
// For theme-added sizes
$sizes[ $s ]['crop'] = intval( $additional_image_sizes[ $s ]['crop'] );
} else {
// For default sizes set in options
$sizes[ $s ]['crop'] = get_option( "{$s}_crop" );
}
$sizes[ $s ]['file'] = $filename;
$sizes[ $s ]['mime-type'] = $mime;
}
$metadata['sizes'] = $sizes;
}
return $metadata;
}
/**
* Filters the attachment meta data.
*
* @param array|bool $data Array of meta data for the given attachment, or false
* if the object does not exist.
* @param int $post_id Attachment ID.
*/
public function metadata_error_fix( $data, $post_id ) {
// If it's a WP_Error regenerate metadata and save it
if ( is_wp_error( $data ) ) {
$data = wp_generate_attachment_metadata( $post_id, get_attached_file( $post_id ) );
wp_update_attachment_metadata( $post_id, $data );
}
return $data;
}
/**
* Get SVG size from the width/height or viewport.
*
* @param $svg
*
* @return array|bool
*/
protected function svg_dimensions( $svg ) {
$svg = @simplexml_load_file( $svg );
$width = 0;
$height = 0;
if ( $svg ) {
$attributes = $svg->attributes();
if ( isset( $attributes->width, $attributes->height ) ) {
$width = floatval( $attributes->width );
$height = floatval( $attributes->height );
} elseif ( isset( $attributes->viewBox ) ) {
$sizes = explode( ' ', $attributes->viewBox );
if ( isset( $sizes[2], $sizes[3] ) ) {
$width = floatval( $sizes[2] );
$height = floatval( $sizes[3] );
}
} else {
return false;
}
}
return array(
'width' => $width,
'height' => $height,
'orientation' => ( $width > $height ) ? 'landscape' : 'portrait'
);
}
/**
* Fix the output of images using wp_get_attachment_image
*
* @param array $attr Attributes for the image markup.
* @param WP_Post $attachment Image attachment post.
* @param string|array $size Requested size. Image size or array of width and height values
* (in that order). Default 'thumbnail'.
*/
public function fix_direct_image_output( $attr, $attachment ) {
if ( ! $attachment instanceof WP_Post ) {
return $attr;
}
$mime = get_post_mime_type( $attachment->ID );
if ( 'image/svg+xml' === $mime ) {
$default_height = 100;
$default_width = 100;
$dimensions = $this->svg_dimensions( get_attached_file( $attachment->ID ) );
if ( $dimensions ) {
$default_height = $dimensions['height'];
$default_width = $dimensions['width'];
}
$attr['height'] = $default_height;
$attr['width'] = $default_width;
}
return $attr;
}
}