Auto upload remote sites' images to server?

Same question.
Subscribing.

We have intranet website, our employees have limited access to the Internet. When a content manager posts news from external source via copy-paste, images are not uploaded automatically. We need this feature!

There is no such feature. The editor itself will never be able to do so. The server-side integration or your save HTML script has to do it.

Here's a quick function in php that does the trick. Sorry. I wrote this thing in a lost hour so there's no warranty and it may contain bugs or security issues. Comments are welcome.

Usage: $html = process_remote_images($html);

Considering that $html contains the response from CK Editor. That's all there is to is. Note that this string possibly needs to be stripslashed (depending on your php settings) and be addslashed again if you want to insert it in a sql database.

/* copies a remote image to the document root and returns
   the name in the /AutoImages/ folder that needs to exist in the web root. */
function download_image($image)
{
	$ch = curl_init($image);
	if (!$ch) {
		die("Could not init curl.");
	}
	//curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_VERBOSE, 1);
	curl_setopt($ch, CURLOPT_HEADER, 1);
	$response = curl_exec($ch);
	if (!$response) {
		die("curl_exec error: ". curl_error($ch));
	}
	// Then, after your curl_exec call:
	$header_size = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
	curl_close($ch);
	$header = substr($response, 0, $header_size);
	$body = substr($response, $header_size);
	if (!preg_match("/Content-Type: (.*)\r\n/i", $header, $match)) {
		die("No content type for image: $image.");
	}
	$type = $match[1];
	switch (strtolower($type)) {
	case "image/gif":
		$ext = "gif";
		break;
	case "image/jpg":
	case "image/jpeg":
		$ext = "jpg";
		break;
	case "image/png":
		$ext = "png";
		break;
	case "image/bmp":
		$ext = "bmp";
		break;
	default:
		$ext = "";
		die("Content-type: $type not supported.");
		break;
	}
	$rand = mt_rand();
	$new = "/AutoImages/" . $rand . "." . $ext;
	$base = $_SERVER["DOCUMENT_ROOT"] . $new;
	$fp = fopen($base, "wb");
	if (!$fp) {
		die("File: $base. Directory not writable.");
	}
	fwrite($fp, $body);
	fclose($fp);
	return $new;
}

/* searches the html for remote images and replaces them with a local copy */
function process_remote_images($html_content)
{
	$base_url = "http://" . $_SERVER["SERVER_NAME"];
	if (preg_match_all("/src=\"(https?:\\/\\/[^\"]+)\"/Ui", $html_content, $arr)) {
		$images = $arr[1];
		foreach ($images as $image) {
			$image1 = html_entity_decode($image);
			if (strcasecmp($base_url, substr($image1, 0, strlen($base_url))) == 0) {
				/* the picture is already on our server */
				continue;
			}
			$new = download_image($image1);
			$new = $base_url . $new;
			$html_content = str_ireplace($image, $new, $html_content);
		}
	}
	return $html_content;
}

 

Hello,

Thanks chimit for this solution. I've tried and it works perfectly.


AnnaD