function errorMsg($msg)
{
printHeader();
writeBeginningHTML(" Jumble Word Solver Error");
echo "Your form results could not be processed because " . $msg;
echo "<HR />" . "<address>" . "Time of Request: " . date("D j M Y h:i:s A") . "\n" . "<a href=\"http://csnew.angelo.edu/~bpearce\">Bryce Pearce</a><br />" . "<a href=\"mailto:bpearce@angelo.edu\">bpearce@angelo.edu</a><br />" . "<br />\n" . "</address>\n" . "</body>\n" . "</html>\n";
exit(1);
}
function doGet()
{
// Import incoming parameters
$authenticationCode = $_GET["authenticationCode"];
$guid = $_GET["guid"];
$resourceID = $_GET["resourceID"];
$callbackFunction = $_GET["callbackFunction"];
//*********************************************************************
// RESOURCES - this ties resourceID's to URLS
// put your own resources here in a way similar to the following
//*********************************************************************
//*********************************************************************
// TEST SUITE VARIABLES - uncomment if you
// want to run this proxy through
// the test suite
//
// $resourceURLs[0] = "http://xmljs.sourceforge.net/testSuites/proxyTest/remoteXML.xml"; //will return the file
// $resourceURLs[1] = "http://xmljs.sourceforge.net/tools/xmlIOProxy/idontexist.xml"; //will return a 404
// $resourceURLs[2] = "http://unknown.host.exception"; //will return unknown host
//*********************************************************************
//*********************************************************************
// EXAMPLES of RSS News Feeds
// $resourceURLs[0] = "http://rss.com.com/2547-12-0-5.xml"; //news.com
// $resourceURLs[1] = "http://slashdot.org/slashdot.rdf"; //slashdot
// $resourceURLs[2] = "http://www.kde.org/dotkdeorg.rdf"; //KDE News
//*********************************************************************
//*********************************************************************************
// AUTHENTICATION - ensures the proxy can't be used without knowing the
// authentication code. For full security, use the proxy with SSL
// security turned on.
//
// NOTE! The proxy WILL NOT WORK if the authentication
// code is left unchanged
//
// NOTE! The serverAuthenticationCode cannot contain spaces
// unless you want to manually URL Encode the spaces
// when you call the proxy through the xmlIOLoadXML functions
//
//*********************************************************************************
$serverAuthenticationCode = "authentication code not set";
//Uncomment out the following line if you would like to run this proxy through the test suite
//$serverAuthenticationCode = "password";
// Check to see if we're a go for proxying
$okToProxy = true;
if ($resourceID == "") {
$okToProxy = false;
$errorString = "The required parameter 'resourceID' was not found.";
}
if (!$guid) {
$okToProxy = false;
$errorString = "The required parameter 'guid' was not found.";
}
if (!$callbackFunction) {
$okToProxy = false;
$errorString = "The required parameter 'callbackFunction' was not found.";
}
if (!$authenticationCode) {
$okToProxy = false;
$errorString = "The required parameter 'authenticationCode' was not found.";
}
//check for okToProxy here because if the authenticationCode is null or "", the following will be caught as well and we don't want it to
if ($okToProxy and $authenticationCode != $serverAuthenticationCode) {
$okToProxy = false;
$errorString = "Authentication failure.";
}
//check for okToProxy here because if the resourceID is null, the following will throw an exception which we don't want
if ($okToProxy and !$resourceURLs[$resourceID]) {
$okToProxy = false;
$errorString = "The resourceID passed in was not valid.";
}
if ($serverAuthenticationCode == "authentication code not set") {
$okToProxy = false;
$errorString = "The authentication code on the proxy has not been set. The proxy can not function until the authentication code is set.";
}
// Make sure we have all the params we need and that the resourceID exists in our list
if ($okToProxy) {
$url = $resourceURLs[$resourceID];
$ret = "";
$okRead = true;
// Connect to the remote webserver, and request the page we want.
$handle = @fopen($url, "r");
// Read that page into $line
if ($handle) {
while (!feof($handle)) {
$ret .= fread($handle, 1024);
}
} else {
$okRead = false;
$errorString = "The requested URL ({$url}) was not found.";
}
if ($okRead == true) {
//change the HTML into something the browser cannot parse into a DOM tree. The makes
//the client side rendering faster as well as helps to avoid any potential for abuse
$ret = str_replace('<', '«', $ret);
//String.charAt(171)
$ret = str_replace('>', '»', $ret);
//String.charAt(187)
$ret = str_replace('&', '§', $ret);
//String.charAt(167)
writeBeginningHTML($guid, $callbackFunction, "success");
print $ret;
} else {
//this is probably a 404 or timeout errorr
writeBeginningHTML($guid, $callbackFunction, "error");
print $errorString . "\n";
}
writeEndHTML();
} else {
// Something went wrong before we could even proxy. Write an error.
$errCallbackFunction;
$errGuid;
if (!$callbackFunction) {
$errCallbackFunction = "unknown";
} else {
$errCallbackFunction = $callbackFunction;
}
if (!guid) {
$errGuid = "unknown";
} else {
$errGuid = $guid;
}
writeBeginningHTML($errGuid, $errCallbackFunction, "error");
//write the error string
print $errorString;
//end the HTML
writeEndHTML();
}
}
