Basic OAuth1 client for making signed get/post requests; only tested against Twitter so far.

exec/load/oauth.js

+load('hmac.js');
+load('http.js');
+
+function _encodeURIComponent(str) {
+	return encodeURIComponent(str).replace(
+  		/[!'()*]/g, function(c) { return '%' + c.charCodeAt(0).toString(16); }
+  	);
+}
+
+function generate_nonce(l) {
+	var s = '';
+	var c = '0123456789ABCDEFabcdef'.split('');
+	for (var n = 0; n < l; n++) s += c[Math.floor(Math.random() * c.length)];
+	return s;
+}
+
+function merge_objects() {
+	var o = {};
+	Array.prototype.slice.call(arguments).forEach(
+		function (e) { Object.keys(e).forEach(function (f) { o[f] = e[f]; }); }
+	);
+	return o;
+}
+
+function param_stringify(params, quote, delim) {
+	return Object.keys(params).map(
+		function (e) {
+			return (
+				_encodeURIComponent(e) + '=' +
+				(quote ? '"' : '') +
+				_encodeURIComponent(params[e]) +
+				(quote ? '"' : '')
+			);
+		}
+	).sort().join(delim);
+}
+
+var OAuth1_Client = function () {
+
+	function build_oauth_params(consumer_key, token) {
+		var obj = {
+			oauth_consumer_key : consumer_key,
+			oauth_nonce : generate_nonce(32),
+			oauth_signature_method : 'HMAC-SHA1',
+			oauth_timestamp : time() + '',
+			oauth_version : '1.0'
+		};
+		if (token) obj.oauth_token = token;
+		return obj;
+	}
+
+	function get_base_string(method, url, params, data) {
+		if (data) params = merge_objects(params, data);
+		return (
+			_encodeURIComponent(method) + '&' +
+			_encodeURIComponent(url) + '&' +
+			_encodeURIComponent(param_stringify(params, false, '&'))
+		);
+	}
+
+	function get_signature(base_string, consumer_secret, token_secret) {
+		return base64_encode(
+			hmac_sha1(
+				_encodeURIComponent(consumer_secret) +
+				'&' +
+				(token_secret ? _encodeURIComponent(token_secret) : ''),
+				base_string
+			)
+		);
+	}
+
+	this.get = function (url, key, secret, token, token_secret) {
+		url = url.split('?');
+		var _url = url.shift();
+		var data = {};
+		if (url.length > 0) {
+			url.join('?').split('&').forEach(
+				function (e) {
+					e = e.split('=');
+					if (e.length < 2) return;
+					data[e][0] = data[e][1];
+				}
+			);
+		}
+		var params = build_oauth_params(key, token);
+		var base_string = get_base_string('GET', _url, params, data);
+		params.oauth_signature = get_signature(base_string, secret, token_secret);
+		return (new HTTPRequest(
+			false, false,
+			{ Authorization : 'OAuth ' + param_stringify(params, true, ', ') }
+		)).Get(_url + '?' + param_stringify(data, false, '&'));
+	}
+
+	this.post = function (url, data, key, secret, token, token_secret) {
+		var params = build_oauth_params(key, token);
+		var base_string = get_base_string('POST', url, params, data);
+		params.oauth_signature = get_signature(base_string, secret, token_secret);
+		return (new HTTPRequest(
+			false, false,
+			{ Authorization : 'OAuth ' + param_stringify(params, true, ', ') }
+		)).Post(url, param_stringify(data, false, '&'));
+	}
+
+}
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