/** * Resolve and fetch an image for use. * * @param string $url The url of the image * @param string $protocol 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 * @param Dompdf $dompdf The Dompdf instance * * @throws ImageException * @return array An array with two elements: The local path to the image and the image extension */ static function resolve_url($url, $protocol, $host, $base_path, Dompdf $dompdf) { self::$_dompdf = $dompdf; $protocol = mb_strtolower($protocol); $parsed_url = Helpers::explode_url($url); $message = null; $remote = $protocol && $protocol !== "file://" || $parsed_url['protocol'] != ""; $data_uri = strpos($parsed_url['protocol'], "data:") === 0; $full_url = null; $enable_remote = $dompdf->get_option("enable_remote"); try { // Remote not allowed and is not DataURI if (!$enable_remote && $remote && !$data_uri) { throw new ImageException("Remote file access is disabled.", E_WARNING); } else { if ($enable_remote && $remote || $data_uri) { // Download remote files to a temporary directory $full_url = Helpers::build_url($protocol, $host, $base_path, $url); // From cache if (isset(self::$_cache[$full_url])) { $resolved_url = self::$_cache[$full_url]; } else { $tmp_dir = $dompdf->get_option("temp_dir"); $resolved_url = tempnam($tmp_dir, "ca_dompdf_img_"); $image = ""; if ($data_uri) { if ($parsed_data_uri = Helpers::parse_data_uri($url)) { $image = $parsed_data_uri['data']; } } else { set_error_handler(array("\\Dompdf\\Helpers", "record_warnings")); $image = file_get_contents($full_url, null, $dompdf->getHttpContext()); restore_error_handler(); } // Image not found or invalid if (strlen($image) == 0) { $msg = $data_uri ? "Data-URI could not be parsed" : "Image not found"; throw new ImageException($msg, E_WARNING); } 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 { $resolved_url = Helpers::build_url($protocol, $host, $base_path, $url); } } // Check if the local file is readable if (!is_readable($resolved_url) || !filesize($resolved_url)) { throw new ImageException("Image not readable or empty", E_WARNING); } else { list($width, $height, $type) = Helpers::dompdf_getimagesize($resolved_url, $dompdf->getHttpContext()); // Known image type if ($width && $height && in_array($type, array("gif", "png", "jpeg", "bmp", "svg"))) { //Don't put replacement image into cache - otherwise it will be deleted on cache cleanup. //Only execute on successful caching of remote image. if ($enable_remote && $remote || $data_uri) { self::$_cache[$full_url] = $resolved_url; } } else { throw new ImageException("Image type unknown", E_WARNING); } } } catch (ImageException $e) { $resolved_url = self::$broken_image; $type = "png"; $message = "Image not found or type unknown"; Helpers::record_warnings($e->getCode(), $e->getMessage() . " \n {$url}", $e->getFile(), $e->getLine()); } return array($resolved_url, $type, $message); }
/** * Add a link to the pdf * * @param string $url The url to link to * @param float $x The x position of the link * @param float $y The y position of the link * @param float $width The width of the link * @param float $height The height of the link */ function add_link($url, $x, $y, $width, $height) { $y = $this->y($y) - $height; if (strpos($url, '#') === 0) { // Local link $name = substr($url, 1); if ($name) { $this->_pdf->create_annotation($x, $y, $x + $width, $y + $height, 'Link', "contents={$url} destname=" . substr($url, 1) . " linewidth=0"); } } else { list($proto, $host, $path, $file) = Helpers::explode_url($url); if ($proto == "" || $proto === "file://") { return; } // Local links are not allowed $url = Helpers::build_url($proto, $host, $path, $file); $url = '{' . rawurldecode($url) . '}'; $action = $this->_pdf->create_action("URI", "url=" . $url); $this->_pdf->create_annotation($x, $y, $x + $width, $y + $height, 'Link', "contents={$url} action={activate={$action}} linewidth=0"); } }
protected function _image($val) { $DEBUGCSS = $this->_stylesheet->get_dompdf()->getOptions()->getDebugCss(); $parsed_url = "none"; if (mb_strpos($val, "url") === false) { $path = "none"; //Don't resolve no image -> otherwise would prefix path and no longer recognize as none } else { $val = preg_replace("/url\\(['\"]?([^'\")]+)['\"]?\\)/", "\\1", trim($val)); // Resolve the url now in the context of the current stylesheet $parsed_url = Helpers::explode_url($val); if ($parsed_url["protocol"] == "" && $this->_stylesheet->get_protocol() == "") { if ($parsed_url["path"][0] === '/' || $parsed_url["path"][0] === '\\') { $path = $_SERVER["DOCUMENT_ROOT"] . '/'; } else { $path = $this->_stylesheet->get_base_path(); } $path .= $parsed_url["path"] . $parsed_url["file"]; $path = realpath($path); // If realpath returns FALSE then specifically state that there is no background image if (!$path) { $path = 'none'; } } else { $path = Helpers::build_url($this->_stylesheet->get_protocol(), $this->_stylesheet->get_host(), $this->_stylesheet->get_base_path(), $val); } } if ($DEBUGCSS) { print "<pre>[_image\n"; print_r($parsed_url); print $this->_stylesheet->get_protocol() . "\n" . $this->_stylesheet->get_base_path() . "\n" . $path . "\n"; print "_image]</pre>"; } return $path; }
/** * Builds the {@link FrameTree}, loads any CSS and applies the styles to * the {@link FrameTree} */ private function processHtml() { $this->tree->build_tree(); $this->css->load_css_file(Stylesheet::getDefaultStylesheet(), Stylesheet::ORIG_UA); $acceptedmedia = Stylesheet::$ACCEPTED_GENERIC_MEDIA_TYPES; $acceptedmedia[] = $this->options->getDefaultMediaType(); // <base href="" /> $base_nodes = $this->dom->getElementsByTagName("base"); if ($base_nodes->length && ($href = $base_nodes->item(0)->getAttribute("href"))) { list($this->protocol, $this->baseHost, $this->basePath) = Helpers::explode_url($href); } // Set the base path of the Stylesheet to that of the file being processed $this->css->set_protocol($this->protocol); $this->css->set_host($this->baseHost); $this->css->set_base_path($this->basePath); // Get all the stylesheets so that they are processed in document order $xpath = new DOMXPath($this->dom); $stylesheets = $xpath->query("//*[name() = 'link' or name() = 'style']"); foreach ($stylesheets as $tag) { switch (strtolower($tag->nodeName)) { // load <link rel="STYLESHEET" ... /> tags case "link": if (mb_strtolower(stripos($tag->getAttribute("rel"), "stylesheet") !== false) || mb_strtolower($tag->getAttribute("type")) === "text/css") { //Check if the css file is for an accepted media type //media not given then always valid $formedialist = preg_split("/[\\s\n,]/", $tag->getAttribute("media"), -1, PREG_SPLIT_NO_EMPTY); if (count($formedialist) > 0) { $accept = false; foreach ($formedialist as $type) { if (in_array(mb_strtolower(trim($type)), $acceptedmedia)) { $accept = true; break; } } if (!$accept) { //found at least one mediatype, but none of the accepted ones //Skip this css file. continue; } } $url = $tag->getAttribute("href"); $url = Helpers::build_url($this->protocol, $this->baseHost, $this->basePath, $url); $this->css->load_css_file($url, Stylesheet::ORIG_AUTHOR); } break; // load <style> tags // load <style> tags case "style": // Accept all <style> tags by default (note this is contrary to W3C // HTML 4.0 spec: // http://www.w3.org/TR/REC-html40/present/styles.html#adef-media // which states that the default media type is 'screen' if ($tag->hasAttributes() && ($media = $tag->getAttribute("media")) && !in_array($media, $acceptedmedia)) { continue; } $css = ""; if ($tag->hasChildNodes()) { $child = $tag->firstChild; while ($child) { $css .= $child->nodeValue; // Handle <style><!-- blah --></style> $child = $child->nextSibling; } } else { $css = $tag->nodeValue; } $this->css->load_css($css); break; } } }