<?php
/**
* E2Pdf Image Helper
* @copyright Copyright 2017 https://e2pdf.com
* @license GPLv3
* @version 1
* @link https://e2pdf.com
* @since 0.00.01
*/
if (!defined('ABSPATH')) {
die('Access denied.');
}
class Helper_E2pdf_Image {
private $helper;
public function __construct() {
$this->helper = Helper_E2pdf_Helper::instance();
}
/**
* Get Base64 Encoded Image
* @param string $value - Image path
* @return mixed - Base64 encoded image OR FALSE
*/
public function get_image($value, $extension = false, $field = array()) {
$source = false;
$protected = false;
if ($value) {
preg_match('/src=(?:"|\')([^"\']*)(?:"|\')/', $value, $matches);
if (isset($matches[1])) {
$value = $matches[1];
}
$value = trim($value);
$site_url = site_url('/');
$https = str_replace('http://', 'https://', $site_url);
$http = str_replace('https://', 'http://', $site_url);
if (!get_option('e2pdf_images_remote_request', '0')) {
if (0 === strpos($value, $https)) {
$tmp_value = ABSPATH . substr($value, strlen($https));
if (@file_exists($tmp_value)) {
$value = $tmp_value;
}
} elseif (0 === strpos($value, $http)) {
$tmp_value = ABSPATH . substr($value, strlen($http));
if (@file_exists($tmp_value)) {
$value = $tmp_value;
}
}
}
if (!$source) {
if ((0 === strpos($value, ABSPATH) || 0 === strpos($value, '/')) && @file_exists($value) && $this->get_extension($value)) {
if ($extension == 'formidable' && class_exists('FrmProFileField') && !@is_readable($value)) {
FrmProFileField::chmod($value, apply_filters('frm_protected_file_readonly_permission', 0400));
if (@!is_readable($value)) {
@chmod($value, apply_filters('frm_protected_file_readonly_permission', 0400));
}
if (@is_readable($value)) {
$protected = true;
}
}
$contents = $this->get_optimized_image($value, $field);
if (!$contents) {
$contents = @file_get_contents($value);
}
if ($contents) {
$source = base64_encode($contents);
}
if ($protected) {
FrmProFileField::chmod($value, 0200);
}
} elseif (@file_exists(ABSPATH . $value) && $this->get_extension(ABSPATH . $value)) {
if ($extension == 'formidable' && class_exists('FrmProFileField') && !@is_readable(ABSPATH . $value)) {
FrmProFileField::chmod(ABSPATH . $value, apply_filters('frm_protected_file_readonly_permission', 0400));
if (@!is_readable(ABSPATH . $value)) {
@chmod(ABSPATH . $value, apply_filters('frm_protected_file_readonly_permission', 0400));
}
if (@is_readable(ABSPATH . $value)) {
$protected = true;
}
}
$contents = $this->get_optimized_image(ABSPATH . $value, $field);
if (!$contents) {
$contents = @file_get_contents(ABSPATH . $value);
}
if ($contents) {
$source = base64_encode($contents);
}
if ($protected) {
FrmProFileField::chmod(ABSPATH . $value, 0200);
}
} elseif (0 === strpos($value, 'data:image/')) {
$value = preg_replace('/^data:image\/[^;]+;base64,/', '', $value);
$tmp_file = base64_decode($value, true);
if ($this->get_extension($tmp_file)) {
$source = $value;
}
} elseif (0 === strpos($value, '<svg') || 0 === strpos($value, '<?xml') || (false !== strpos($value, '<svg') && false !== strpos($value, '</svg>'))) {
if (false === strpos($value, 'xmlns')) {
$value = str_replace('<svg', '<svg xmlns="http://www.w3.org/2000/svg"', $value);
}
if (0 !== strpos($value, '<svg') && 0 !== strpos($value, '<?xml')) {
$position = strpos($value, '<svg');
$value = substr($value, $position);
}
$source = base64_encode($value);
} elseif ($tmp_file = base64_decode($value, true)) {
if ($this->get_extension($tmp_file)) {
$source = $value;
}
} elseif ($body = $this->get_by_url($value)) {
$source = base64_encode($body);
}
}
}
return $source;
}
public function get_optimized_image($file, $field = array()) {
if (!empty($field['properties']['quality']) && $field['properties']['quality'] != '-1' && isset($field['width']) && isset($field['height'])) {
$quality = (int) $field['properties']['quality'];
$editor = wp_get_image_editor($file);
if (is_wp_error($editor) || !$editor->get_size() || !class_exists('ReflectionProperty')) {
return '';
}
$image_size = $editor->get_size();
if (($image_size['width'] > ((int) $field['width'] * $quality)) || ($image_size['height'] > ((int) $field['height'] * $quality))) {
$width = (int) $field['width'] * $quality;
$height = (int) $field['height'] * $quality;
} else {
return '';
}
if (is_wp_error($editor->resize($width, $height, false))) {
return '';
}
$editor->set_quality(100);
$reflection = new ReflectionProperty(get_class($editor), 'mime_type');
$reflection->setAccessible(true);
$reflection->getValue($editor);
$mime_type = $reflection->getValue($editor);
$reflection = new ReflectionProperty(get_class($editor), 'image');
$reflection->setAccessible(true);
$image = $reflection->getValue($editor);
if ($image && $editor instanceof WP_Image_Editor_GD) {
ob_start();
switch ($mime_type) {
case 'image/png':
imagepng($image);
break;
case 'image/gif':
imagegif($image);
break;
case 'image/webp':
if (function_exists('imagewebp')) {
imagewebp($image, null, 100);
}
break;
default:
imagejpeg($image, null, 100);
break;
}
$contents = ob_get_contents();
ob_end_clean();
return $contents;
} elseif ($image && $editor instanceof WP_Image_Editor_Imagick) {
$contents = $image->getImagesBlob();
return $contents;
}
}
return '';
}
public function get_base64_image($url) {
if ($ext = $this->get_extension($url)) {
$type = array_search($ext, $this->get_allowed_extensions());
if ($type !== false && $body = $this->get_by_url($url)) {
return 'data:' . $type . ';base64,' . base64_encode($body);
}
}
return $url;
}
/**
* Get image by Url
* @param string $url - Url to image
* @return array();
*/
public function get_by_url($url) {
$response = wp_remote_get(
$url,
array(
'timeout' => get_option('e2pdf_images_timeout', '30'),
'sslverify' => false,
)
);
if (wp_remote_retrieve_response_code($response) === 200) {
return wp_remote_retrieve_body($response);
} else {
return '';
}
}
public function get_allowed_extensions() {
return array(
'image/jpeg' => 'jpg',
'image/jpeg2' => 'jpeg',
'image/png' => 'png',
'image/gif' => 'gif',
'image/svg' => 'svg',
'image/svg+xml' => 'svg',
'image/webp' => 'webp',
'image/x-ms-bmp' => 'bmp',
'image/bmp' => 'bmp',
'image/tif' => 'tiff',
'image/tiff' => 'tiff',
);
}
public function get_extension($value = false) {
if (!$value) {
return false;
}
$extensions = $this->get_allowed_extensions();
$extension = false;
$mime = false;
if (@file_exists($value)) {
$file_extension = strtolower(pathinfo($value, PATHINFO_EXTENSION));
if (in_array($file_extension, $extensions)) {
return $file_extension;
} elseif (function_exists('finfo_open') && function_exists('finfo_file')) {
$f = finfo_open();
$mime = @finfo_file($f, $value, FILEINFO_MIME_TYPE);
}
} else {
$file_extension = strtolower(pathinfo($value, PATHINFO_EXTENSION));
if (in_array($file_extension, $extensions)) {
return $file_extension;
} elseif (function_exists('finfo_open') && function_exists('finfo_buffer')) {
$f = finfo_open();
$mime = finfo_buffer($f, $value, FILEINFO_MIME_TYPE);
} elseif (function_exists('image_type_to_mime_type') && function_exists('getimagesizefromstring')) {
$size = getimagesizefromstring($value);
if (isset($size['mime'])) {
$mime = $size['mime'];
}
}
}
if ($mime && isset($extensions[$mime])) {
$extension = $extensions[$mime];
}
return $extension;
}
}
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