lots of work so far-- mostly tidying

node_modules/request/aws.js

@@ -0,0 +1,190 @@
+
+/*!
+ * knox - auth
+ * Copyright(c) 2010 LearnBoost <dev@learnboost.com>
+ * MIT Licensed
+ */
+
+/**
+ * Module dependencies.
+ */
+
+var crypto = require('crypto')
+  , parse = require('url').parse;
+
+/**
+ * Valid keys.
+ */
+
+var keys = [
+    'acl'
+  , 'location'
+  , 'logging'
+  , 'notification'
+  , 'partNumber'
+  , 'policy'
+  , 'requestPayment'
+  , 'torrent'
+  , 'uploadId'
+  , 'uploads'
+  , 'versionId'
+  , 'versioning'
+  , 'versions'
+  , 'website'
+];
+
+/**
+ * Return an "Authorization" header value with the given `options`
+ * in the form of "AWS <key>:<signature>"
+ *
+ * @param {Object} options
+ * @return {String}
+ * @api private
+ */
+
+exports.authorization = function(options){
+  return 'AWS ' + options.key + ':' + exports.sign(options);
+};
+
+/**
+ * Simple HMAC-SHA1 Wrapper
+ *
+ * @param {Object} options
+ * @return {String}
+ * @api private
+ */ 
+
+exports.hmacSha1 = function(options){
+  return crypto.createHmac('sha1', options.secret).update(options.message).digest('base64');
+};
+
+/**
+ * Create a base64 sha1 HMAC for `options`. 
+ * 
+ * @param {Object} options
+ * @return {String}
+ * @api private
+ */
+
+exports.sign = function(options){
+  options.message = exports.stringToSign(options);
+  return exports.hmacSha1(options);
+};
+
+/**
+ * Create a base64 sha1 HMAC for `options`. 
+ *
+ * Specifically to be used with S3 presigned URLs
+ * 
+ * @param {Object} options
+ * @return {String}
+ * @api private
+ */
+
+exports.signQuery = function(options){
+  options.message = exports.queryStringToSign(options);
+  return exports.hmacSha1(options);
+};
+
+/**
+ * Return a string for sign() with the given `options`.
+ *
+ * Spec:
+ * 
+ *    <verb>\n
+ *    <md5>\n
+ *    <content-type>\n
+ *    <date>\n
+ *    [headers\n]
+ *    <resource>
+ *
+ * @param {Object} options
+ * @return {String}
+ * @api private
+ */
+
+exports.stringToSign = function(options){
+  var headers = options.amazonHeaders || '';
+  if (headers) headers += '\n';
+  return [
+      options.verb
+    , options.md5
+    , options.contentType
+    , options.date.toUTCString()
+    , headers + options.resource
+  ].join('\n');
+};
+
+/**
+ * Return a string for sign() with the given `options`, but is meant exclusively
+ * for S3 presigned URLs
+ *
+ * Spec:
+ * 
+ *    <date>\n
+ *    <resource>
+ *
+ * @param {Object} options
+ * @return {String}
+ * @api private
+ */
+
+exports.queryStringToSign = function(options){
+  return 'GET\n\n\n' +
+    options.date + '\n' +
+    options.resource;
+};
+
+/**
+ * Perform the following:
+ *
+ *  - ignore non-amazon headers
+ *  - lowercase fields
+ *  - sort lexicographically
+ *  - trim whitespace between ":"
+ *  - join with newline
+ *
+ * @param {Object} headers
+ * @return {String}
+ * @api private
+ */
+
+exports.canonicalizeHeaders = function(headers){
+  var buf = []
+    , fields = Object.keys(headers);
+  for (var i = 0, len = fields.length; i < len; ++i) {
+    var field = fields[i]
+      , val = headers[field]
+      , field = field.toLowerCase();
+    if (0 !== field.indexOf('x-amz')) continue;
+    buf.push(field + ':' + val);
+  }
+  return buf.sort().join('\n');
+};
+
+/**
+ * Perform the following:
+ *
+ *  - ignore non sub-resources
+ *  - sort lexicographically
+ *
+ * @param {String} resource
+ * @return {String}
+ * @api private
+ */
+
+exports.canonicalizeResource = function(resource){
+  var url = parse(resource, true)
+    , path = url.pathname
+    , buf = [];
+
+  Object.keys(url.query).forEach(function(key){
+    if (!~keys.indexOf(key)) return;
+    var val = '' == url.query[key] ? '' : '=' + encodeURIComponent(url.query[key]);
+    buf.push(key + val);
+  });
+
+  return path + (buf.length
+    ? '?' + buf.sort().join('&')
+    : '');
+};