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function handleRequest(request, response)
{
var match;
var requestAuth = true;
// Allow the caller to drive how authentication is processed via the query.
// Eg, http://localhost:8888/authenticate.sjs?user=foo&realm=bar
// The extra ? allows the user/pass/realm checks to succeed if the name is
// at the beginning of the query string.
var query = "?" + request.queryString;
var expected_user = "test", expected_pass = "testpass", realm = "mochitest";
// user=xxx
match = /[^_]user=([^&]*)/.exec(query);
if (match)
expected_user = match[1];
// pass=xxx
match = /[^_]pass=([^&]*)/.exec(query);
if (match)
expected_pass = match[1];
// realm=xxx
match = /[^_]realm=([^&]*)/.exec(query);
if (match)
realm = match[1];
// Look for an authentication header, if any, in the request.
//
// EG: Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
//
// This test only supports Basic auth. The value sent by the client is
// "username:password", obscured with base64 encoding.
var actual_user = "", actual_pass = "", authHeader, authPresent = false;
if (request.hasHeader("Authorization")) {
authPresent = true;
authHeader = request.getHeader("Authorization");
match = /Basic (.+)/.exec(authHeader);
if (match.length != 2)
throw new Error("Couldn't parse auth header: " + authHeader);
var userpass = base64ToString(match[1]); // no atob() :-(
match = /(.*):(.*)/.exec(userpass);
if (match.length != 3)
throw new Error("Couldn't decode auth header: " + userpass);
actual_user = match[1];
actual_pass = match[2];
}
// Don't request authentication if the credentials we got were what we
// expected.
if (expected_user == actual_user &&
expected_pass == actual_pass) {
requestAuth = false;
}
if (requestAuth) {
response.setStatusLine("1.0", 401, "Authentication required");
response.setHeader("WWW-Authenticate", "basic realm=\"" + realm + "\"", true);
} else {
response.setStatusLine("1.0", 200, "OK");
}
response.setHeader("Content-Type", "application/xhtml+xml", false);
response.write("<html xmlns='http://www.w3.org/1999/xhtml'>");
response.write("<p>Login: <span id='ok'>" + (requestAuth ? "FAIL" : "PASS") + "</span></p>\n");
response.write("<p>Auth: <span id='auth'>" + authHeader + "</span></p>\n");
response.write("<p>User: <span id='user'>" + actual_user + "</span></p>\n");
response.write("<p>Pass: <span id='pass'>" + actual_pass + "</span></p>\n");
response.write("</html>");
}
// base64 decoder
//
// Yoinked from extensions/xml-rpc/src/nsXmlRpcClient.js because btoa()
// doesn't seem to exist. :-(
/* Convert Base64 data to a string */
const toBinaryTable = [
-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,-1,
-1,-1,-1,-1, -1,-1,-1,-1, -1,-1,-1,62, -1,-1,-1,63,
52,53,54,55, 56,57,58,59, 60,61,-1,-1, -1, 0,-1,-1,
-1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10, 11,12,13,14,
15,16,17,18, 19,20,21,22, 23,24,25,-1, -1,-1,-1,-1,
-1,26,27,28, 29,30,31,32, 33,34,35,36, 37,38,39,40,
41,42,43,44, 45,46,47,48, 49,50,51,-1, -1,-1,-1,-1
];
const base64Pad = '=';
function base64ToString(data) {
var result = '';
var leftbits = 0; // number of bits decoded, but yet to be appended
var leftdata = 0; // bits decoded, but yet to be appended
// Convert one by one.
for (var i = 0; i < data.length; i++) {
var c = toBinaryTable[data.charCodeAt(i) & 0x7f];
var padding = (data[i] == base64Pad);
// Skip illegal characters and whitespace
if (c == -1) continue;
// Collect data into leftdata, update bitcount
leftdata = (leftdata << 6) | c;
leftbits += 6;
// If we have 8 or more bits, append 8 bits to the result
if (leftbits >= 8) {
leftbits -= 8;
// Append if not padding.
if (!padding)
result += String.fromCharCode((leftdata >> leftbits) & 0xff);
leftdata &= (1 << leftbits) - 1;
}
}
// If there are any bits left, the base64 string was corrupted
if (leftbits)
throw Components.Exception('Corrupted base64 string');
return result;
}
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