static function resolve_url($url, $proto, $host, $base_path)
{
$parsed_url = explode_url($url);
$message = null;
$remote = $proto && $proto !== "file://" || $parsed_url['protocol'] != "";
$datauri = strpos($parsed_url['protocol'], "data:") === 0;
try {
if (!DOMPDF_ENABLE_REMOTE && $remote && !$datauri) {
throw new DOMPDF_Image_Exception("DOMPDF_ENABLE_REMOTE is set to FALSE");
} else {
if (DOMPDF_ENABLE_REMOTE && $remote || $datauri) {
$full_url = dompdf_build_url($proto, $host, $base_path, $url);
if (isset(self::$_cache[$full_url])) {
$resolved_url = self::$_cache[$full_url];
} else {
$resolved_url = tempnam(DOMPDF_TEMP_DIR, "ca_dompdf_img_");
if ($datauri) {
if ($parsed_data_uri = parse_data_uri($url)) {
$image = $parsed_data_uri['data'];
}
} else {
$old_err = set_error_handler("record_warnings");
$image = wp_remote_get($full_url);
$image = isset($image['body']) ? $image['body'] : '';
restore_error_handler();
}
if (strlen($image) == 0) {
$msg = $datauri ? "Data-URI could not be parsed" : "Image not found";
throw new DOMPDF_Image_Exception($msg);
} else {
file_put_contents($resolved_url, $image);
}
}
} else {
$resolved_url = dompdf_build_url($proto, $host, $base_path, $url);
}
}
if (!is_readable($resolved_url) || !filesize($resolved_url)) {
throw new DOMPDF_Image_Exception("Image not readable or empty");
} else {
list($width, $height, $type) = dompdf_getimagesize($resolved_url);
if ($width && $height && in_array($type, array(IMAGETYPE_GIF, IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_BMP))) {
if (DOMPDF_ENABLE_REMOTE && $remote) {
self::$_cache[$full_url] = $resolved_url;
}
} else {
throw new DOMPDF_Image_Exception("Image type unknown");
unlink($resolved_url);
}
}
} catch (DOMPDF_Image_Exception $e) {
$resolved_url = self::$broken_image;
$type = IMAGETYPE_PNG;
$message = $e->getMessage() . " \n {$url}";
}
return array($resolved_url, $type, $message);
}
/**
* Resolve and fetch an image for use.
*
* @param string $url The url of the image
* @param string $proto Default protocol if none specified in $url
* @param string $host Default host if none specified in $url
* @param string $base_path Default path if none specified in $url
* @return array An array with two elements: The local path to the image and the image extension
*/
static function resolve_url($url, $proto, $host, $base_path)
{
$parsed_url = explode_url($url);
$message = null;
$remote = $proto && $proto !== "file://" || $parsed_url['protocol'] != "";
$datauri = strpos($parsed_url['protocol'], "data:") === 0;
try {
// Remote not allowed and is not DataURI
if (!DOMPDF_ENABLE_REMOTE && $remote && !$datauri) {
throw new DOMPDF_Image_Exception("DOMPDF_ENABLE_REMOTE is set to FALSE");
} else {
if (DOMPDF_ENABLE_REMOTE && $remote || $datauri) {
// Download remote files to a temporary directory
$full_url = build_url($proto, $host, $base_path, $url);
// From cache
if (isset(self::$_cache[$full_url])) {
$resolved_url = self::$_cache[$full_url];
} else {
$resolved_url = tempnam(DOMPDF_TEMP_DIR, "ca_dompdf_img_");
if ($datauri) {
if ($parsed_data_uri = parse_data_uri($url)) {
$image = $parsed_data_uri['data'];
}
} else {
$old_err = set_error_handler("record_warnings");
$image = file_get_contents($full_url);
restore_error_handler();
}
// Image not found or invalid
if (strlen($image) == 0) {
$msg = $datauri ? "Data-URI could not be parsed" : "Image not found";
throw new DOMPDF_Image_Exception($msg);
} else {
//e.g. fetch.php?media=url.jpg&cache=1
//- Image file name might be one of the dynamic parts of the url, don't strip off!
//- a remote url does not need to have a file extension at all
//- local cached file does not have a matching file extension
//Therefore get image type from the content
file_put_contents($resolved_url, $image);
}
}
} else {
$resolved_url = build_url($proto, $host, $base_path, $url);
}
}
// Check if the local file is readable
if (!is_readable($resolved_url) || !filesize($resolved_url)) {
throw new DOMPDF_Image_Exception("Image not readable or empty");
} else {
list($width, $height, $type) = dompdf_getimagesize($resolved_url);
// Known image type
if ($width && $height && in_array($type, array(IMAGETYPE_GIF, IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_BMP))) {
//Don't put replacement image into cache - otherwise it will be deleted on cache cleanup.
//Only execute on successfull caching of remote image.
if (DOMPDF_ENABLE_REMOTE && $remote) {
self::$_cache[$full_url] = $resolved_url;
}
} else {
throw new DOMPDF_Image_Exception("Image type unknown");
unlink($resolved_url);
}
}
} catch (DOMPDF_Image_Exception $e) {
$resolved_url = self::$broken_image;
$type = IMAGETYPE_PNG;
$message = $e->getMessage() . " \n {$url}";
}
return array($resolved_url, $type, $message);
}
/**
* load and parse a CSS file
*
* @param string $file
* @param int $origin
*/
function load_css_file($file, $origin = self::ORIG_AUTHOR)
{
if ($origin) {
$this->_current_origin = $origin;
}
// Prevent circular references
if (isset($this->_loaded_files[$file])) {
return;
}
$this->_loaded_files[$file] = true;
if (strpos($file, "data:") === 0) {
$parsed = parse_data_uri($file);
$css = $parsed["data"];
} else {
$parsed_url = explode_url($file);
list($this->_protocol, $this->_base_host, $this->_base_path, $filename) = $parsed_url;
// Fix submitted by Nick Oostveen for aliased directory support:
if ($this->_protocol == "") {
$file = $this->_base_path . $filename;
} else {
$file = build_url($this->_protocol, $this->_base_host, $this->_base_path, $filename);
}
set_error_handler("record_warnings");
$css = file_get_contents($file, null, $this->_dompdf->get_http_context());
restore_error_handler();
$good_mime_type = true;
// See http://the-stickman.com/web-development/php/getting-http-response-headers-when-using-file_get_contents/
if (isset($http_response_header) && !$this->_dompdf->get_quirksmode()) {
foreach ($http_response_header as $_header) {
if (preg_match("@Content-Type:\\s*([\\w/]+)@i", $_header, $matches) && $matches[1] !== "text/css") {
$good_mime_type = false;
}
}
}
if (!$good_mime_type || $css == "") {
record_warnings(E_USER_WARNING, "Unable to load css file {$file}", __FILE__, __LINE__);
return;
}
}
$this->_parse_css($css);
}
/**
* Resolve and fetch an image for use.
*
* @param string $url The url of the image
* @param string $proto Default protocol if none specified in $url
* @param string $host Default host if none specified in $url
* @param string $base_path Default path if none specified in $url
* @return array An array with two elements: The local path to the image and the image extension
*/
static function resolve_url($url, $proto, $host, $base_path)
{
global $_dompdf_warnings;
$parsed_url = explode_url($url);
$DEBUGPNG = DEBUGPNG;
//=DEBUGPNG; Allow override of global setting for ad hoc debug
$full_url_dbg = '';
//debugpng
if ($DEBUGPNG) {
print 'resolve_url(' . $url . ',' . $proto . ',' . $host . ',' . $base_path . ')(' . $parsed_url['protocol'] . ')';
}
$remote = $proto != "" && $proto !== "file://";
$remote = $remote || $parsed_url['protocol'] != "";
$datauri = strpos($parsed_url['protocol'], "data:") === 0;
if (!DOMPDF_ENABLE_REMOTE && $remote && !$datauri) {
$resolved_url = DOMPDF_LIB_DIR . "/res/broken_image.png";
$ext = "png";
//debugpng
if ($DEBUGPNG) {
$full_url_dbg = '(blockedremote)';
}
} else {
if (DOMPDF_ENABLE_REMOTE && $remote || $datauri) {
// Download remote files to a temporary directory
$full_url = build_url($proto, $host, $base_path, $url);
if (isset(self::$_cache[$full_url])) {
list($resolved_url, $ext) = self::$_cache[$full_url];
//debugpng
if ($DEBUGPNG) {
$full_url_dbg = $full_url . '(cache)';
}
} else {
$resolved_url = tempnam(DOMPDF_TEMP_DIR, "ca_dompdf_img_");
//debugpng
if ($DEBUGPNG) {
echo $resolved_url . "\n";
}
if ($datauri) {
if ($parsed_data_uri = parse_data_uri($url)) {
$image = $parsed_data_uri['data'];
list(, $ext) = explode('/', $parsed_data_uri['mime'], 2);
}
} else {
$old_err = set_error_handler("record_warnings");
$image = file_get_contents($full_url);
restore_error_handler();
}
if (strlen($image) == 0) {
//target image not found
$resolved_url = DOMPDF_LIB_DIR . "/res/broken_image.png";
$ext = "png";
//debugpng
if ($DEBUGPNG) {
$full_url_dbg = $full_url . '(missing)';
}
} else {
file_put_contents($resolved_url, $image);
//e.g. fetch.php?media=url.jpg&cache=1
//- Image file name might be one of the dynamic parts of the url, don't strip off!
// if ( preg_match("/.*\.(\w+)/",$url,$match) ) $ext = $match[1];
//- a remote url does not need to have a file extension at all
//- local cached file does not have a matching file extension
//Therefore get image type from the content
$imagedim = dompdf_getimagesize($resolved_url);
if ($imagedim[0] && $imagedim[1] && in_array($imagedim[2], array(IMAGETYPE_GIF, IMAGETYPE_PNG, IMAGETYPE_JPEG, IMAGETYPE_BMP))) {
//target image is valid
$imagetypes = array('', 'gif', 'jpeg', 'png', 'swf', 'psd', 'bmp');
$ext = $imagetypes[$imagedim[2]];
if (rename($resolved_url, $resolved_url . '.' . $ext)) {
$resolved_url .= '.' . $ext;
}
//Don't put replacement image into cache - otherwise it will be deleted on cache cleanup.
//Only execute on successfull caching of remote image.
self::$_cache[$full_url] = array($resolved_url, $ext);
} else {
//target image is not valid.
unlink($resolved_url);
$resolved_url = DOMPDF_LIB_DIR . "/res/broken_image.png";
$ext = "png";
}
}
}
} else {
$resolved_url = build_url($proto, $host, $base_path, $url);
if ($DEBUGPNG) {
print 'build_url(' . $proto . ',' . $host . ',' . $base_path . ',' . $url . ')(' . $resolved_url . ')';
}
if (!preg_match("/.*\\.(\\w+)/", $url, $match)) {
//debugpng
if ($DEBUGPNG) {
print '[resolve_url exception ' . $url . ']';
}
throw new DOMPDF_Exception("Unknown image type: {$url}.");
}
$ext = $match[1];
//debugpng
if ($DEBUGPNG) {
$full_url_dbg = '(local)';
}
}
}
if (!is_readable($resolved_url) || !filesize($resolved_url)) {
//debugpng
if ($DEBUGPNG) {
$full_url_dbg .= '(nocache' . $resolved_url . ')';
}
$_dompdf_warnings[] = "File " . $resolved_url . " is not readable or is an empty file.\n";
$resolved_url = DOMPDF_LIB_DIR . "/res/broken_image.png";
$ext = "png";
}
//debugpng
if ($DEBUGPNG) {
print '[resolve_url ' . $url . '|' . $full_url_dbg . '|' . $resolved_url . '|' . $ext . ']';
}
return array($resolved_url, $ext);
}
