fopen() encoding ampersands causes a HTTP 500 error

[ChrisScott]

Hi. Thanks in advance for any help...

 

I am writing a web service which receives a SOAP over HTTP message. It then goes and retrieve some information from a different web service using the data received at the beginning.

<?php

$fd = fopen('PMS_IN.log', 'a');

if(isset($GLOBALS['HTTP_RAW_POST_DATA']) && strlen($GLOBALS['HTTP_RAW_POST_DATA'])>0) {

$pms_req = new DOMDocument();
$pms_req->preserveWhiteSpace = false;
$pms_req->loadXML($GLOBALS['HTTP_RAW_POST_DATA']);

$pms_req_xpath = new DOMXPath($pms_req);
$pms_req_urls = $pms_req_xpath->query("/soap:Envelope/soap:Body");

foreach ( $pms_req_urls as $url ) {
	fwrite($fd, $url->firstChild->data . "\r\n");


	$asset_data = fopen($url->firstChild->data,"r");  //this is opening the URL

	if (!$asset_data) {
		$errormessage = error_get_last();
		foreach ($errormessage as $err ) {
			fwrite($fd, "ERROR FROM FOPEN IS:  $err \r\n");
			}
		}
	else {
		while (!feof($asset_data)) {
			$mmwsi_xml = $mmwsi_xml . htmlspecialchars(fgets($asset_data, 64));
			}
		fclose($asset_data);
		}
	fwrite($fd, $mmwsi_xml);

...
...
...

 

The fopen is returning a "HTTP/1.1 500 Internal Server Error" from the second web service due to the fact that the URL it tries to open has encoded ampersands. The second web service is logging amp;var=content as arguments from the URL. I have tested this using explicit urls: fine with no & and error with.

 

Basically I need fopen to open "http://ip/webservice?service=a&arg=b" literally but it will try to open "http://ip/webservice?service=a&arg=b".

 

Any ideas would be much appreciated.