Added support for Google Sign-In, optional in every way.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3187 ed5197a5-7fde-0310-b194-c3ffbd925b24

core/http.js

@@ -0,0 +1,61 @@
+"use strict";
+
+function parseUrl(url) {
+	// XXX: Hack.
+	var match = url.match(new RegExp("(\\w+)://([^/]+)?(.*)"));
+	return {
+		protocol: match[1],
+		host: match[2],
+		path: match[3],
+		port: match[1] == "http" ? 80 : 443,
+	};
+}
+
+function parseResponse(data) {
+	var firstLine;
+	var headers = {};
+
+	while (true) {
+		var endLine = data.indexOf("\r\n");
+		var line = data.substring(0, endLine);
+		if (!firstLine) {
+			firstLine = line;
+		} else if (!line.length) {
+			break;
+		} else {
+			var colon = line.indexOf(":");
+			headers[line.substring(colon)] = line.substring(colon + 1);
+		}
+		data = data.substring(endLine + 2);
+	}
+	return {body: data};
+}
+
+function get(url) {
+	var parsed = parseUrl(url);
+	return new Promise(function(resolve, reject) {
+		var socket = new Socket();
+		var buffer = "";
+
+		return socket.connect(parsed.host, parsed.port).then(function() {
+			socket.read(function(data) {
+				if (data) {
+					buffer += data;
+				} else {
+					resolve(parseResponse(buffer));
+				}
+			});
+
+			if (parsed.port == 443) {
+				return socket.startTls();
+			}
+		}).then(function() {
+			socket.write(`GET ${parsed.path} HTTP/1.0\r\nHost: ${parsed.host}\r\nConnection: close\r\n\r\n`);
+			socket.shutdown();
+		}).catch(function(error) {
+			reject(error);
+		});
+	});
+}
+
+exports.get = get;