function ServeRemoteContent($strServerRelativeUrl, $strLocalActionProxyUrl = false, $intCacheResultForSeconds = false)
{
// ** Security checks
if (strlen($strServerRelativeUrl) <= 0) {
// No url
return false;
}
if ($strServerRelativeUrl[0] != "/") {
// starting /
$strServerRelativeUrl = "/" . $strServerRelativeUrl;
}
// ** Init
if ($strLocalActionProxyUrl === false) {
$strLocalActionProxyUrl = CrankyAdsHelper::GetFullRequestUri("serverurl");
}
/* The following code transparently handles redirects. The replacement code further below simply passes these to the original requester
// ** Get the content
// Note:
// We manually handle redirects here so we can capture and send on all the Set-Cookie headers
// This means we also need to manage the raw Cookie string between redirects
$cookies = isset($_SERVER["HTTP_COOKIE"]) ? $_SERVER["HTTP_COOKIE"] : false;
$targetUrl = $strServerRelativeUrl;
$intMaxRedirects = 3;
while ( $intMaxRedirects >=0 )
{
// * Build the Cookies header
if($cookies === false)
$headers = false;
else
$headers = array("Cookie" =>$cookies);
// * Get the response (without auto-redirects)
$httpResponse = $this->Proxy->GetRemoteContent($targetUrl,true,true,$intCacheResultForSeconds,0,false,true,$headers,CrankyAdsCacheBehaviourFlags::DoNotCacheHtml | CrankyAdsCacheBehaviourFlags::UseTimedOutCacheAsFallbackOnServerError | CrankyAdsCacheBehaviourFlags::ReplaceContentUrlPlaceholdersOnServerResponse, false, "content");
// * Response received
if($httpResponse !== false)
{
// Redirect
if($httpResponse->hLocation !== false && ($httpResponse->HttpResponseCode === 301 || $httpResponse->HttpResponseCode === 302 ) )
{
$targetUrl = $httpResponse->hLocation; // Update the target Url
$httpResponse->CopySetCookieHeadersToResponse(); // Send on all the Set-Cookie headers from this response (if any)
$cookies = $httpResponse->AppendSetCookieHeadersToCookieString($cookies); // Maintain the set of cookies sent to the server for the next request
}
// Done
else
{
break;
}
}
// * No Response
else
{
break;
}
// * Try again?
$intMaxRedirects--;
}
*/
// ** Get the content
$httpResponse = $this->Proxy->GetRemoteContent($strServerRelativeUrl, true, true, $intCacheResultForSeconds, 0, true, true, false, CrankyAdsCacheBehaviourFlags::DoNotCacheHtml | CrankyAdsCacheBehaviourFlags::UseTimedOutCacheAsFallbackOnServerError | CrankyAdsCacheBehaviourFlags::ReplaceContentUrlPlaceholdersOnServerResponse, false, "content");
// ** Serve the content
// Success
if ($httpResponse !== false && $httpResponse->HttpResponseCode === 200) {
$httpResponse->ReplaceAllContentPlaceholders($strLocalActionProxyUrl);
$httpResponse->CopyToResponse(true, false);
// Note: No real need NOT to copy the result code, I'm just making a point that 200 is the default result
return true;
} else {
if ($httpResponse !== false && $httpResponse->HttpResponseCode === 304) {
$httpResponse->CopyToResponse(true, true);
return true;
} else {
if ($httpResponse !== false && $httpResponse->hLocation !== false && ($httpResponse->HttpResponseCode === 301 || $httpResponse->HttpResponseCode === 302)) {
// Build the re-direction url
$redirectTo = $strLocalActionProxyUrl;
if (strpos($redirectTo, "?") === false) {
$redirectTo .= "?";
} else {
$redirectTo .= "&";
}
$redirectTo .= "serverurl=" . urlencode($httpResponse->hLocation);
// Copy the result to the output
$httpResponse->ReplaceAllContentPlaceholders($strLocalActionProxyUrl);
header("Location: " . $redirectTo, true, $httpResponse->HttpResponseCode);
$httpResponse->CopyToResponse(true, false);
return true;
} else {
if (CRANKY_ADS_DEBUG) {
if ($httpResponse !== false) {
echo "<div><h2>DEBUG:ContentController.ServeRemoteContent(..)</h2><br/>Error occurred - Http Response code is unexpected (" . $httpResponse->HttpResponseCode . ");<br/><br/><b>Content:</b><br/>" . $httpResponse->Content . "</div>";
} else {
echo "<div><h2>DEBUG:ContentController.ServeRemoteContent(..)</h2><br/>Error occurred - Http Response is empty</div>";
}
return false;
} else {
return false;
}
}
}
}
}
function ReplaceActionUrlPlaceholders($strLocalActionProxyUrl = false)
{
// Insert the current Url
if ($strLocalActionProxyUrl === false) {
$strLocalActionProxyUrl = CrankyAdsHelper::GetFullRequestUri("serverurl");
}
$this->ReplaceUrlPlaceholder($this->CA_SERVER_ACTION_URL_PLACEHOLDER, $strLocalActionProxyUrl);
}
function ServeRemoteContent()
{
// ** Serve the content
$serverUrl = $_GET["serverurl"];
if (isset($serverUrl)) {
// Don't let anyone mess with our output
$errorReportingSave = error_reporting(0);
if (CRANKY_ADS_DISABLE_ERROR_SUPPRESSION) {
error_reporting($errorReportingSave);
}
// Note:
// . For security reasons this page will serve content from the server /Content directory or /Plugin directory ONLY where content has been marked as public.
// |-> We don't want users accessing plugin settings without being admins
// |-> We don't want malicious users using this page as a proxy to hit just any page on the server (and slowing down this blog)
// |-> We can't limit this call to admins only because this page needs to serve images and other content to users of the blog.
if (!$this->ContentController->ServeRemoteContent($serverUrl, CrankyAdsHelper::GetFullRequestUri("serverurl"), 0)) {
echo "Error contacting the server";
// <- Serving at least something tends to keep colorbox happy
}
error_reporting($errorReportingSave);
} else {
echo "Invalid URL";
}
die;
// We've completed successfully so Wordpress shouldn't output anything else
}
