Backend half

SerpentRace_Backend/node_modules/aws-sdk/lib/signers/v3.js

@@ -0,0 +1,77 @@
+var AWS = require('../core');
+var inherit = AWS.util.inherit;
+
+/**
+ * @api private
+ */
+AWS.Signers.V3 = inherit(AWS.Signers.RequestSigner, {
+  addAuthorization: function addAuthorization(credentials, date) {
+
+    var datetime = AWS.util.date.rfc822(date);
+
+    this.request.headers['X-Amz-Date'] = datetime;
+
+    if (credentials.sessionToken) {
+      this.request.headers['x-amz-security-token'] = credentials.sessionToken;
+    }
+
+    this.request.headers['X-Amzn-Authorization'] =
+      this.authorization(credentials, datetime);
+
+  },
+
+  authorization: function authorization(credentials) {
+    return 'AWS3 ' +
+      'AWSAccessKeyId=' + credentials.accessKeyId + ',' +
+      'Algorithm=HmacSHA256,' +
+      'SignedHeaders=' + this.signedHeaders() + ',' +
+      'Signature=' + this.signature(credentials);
+  },
+
+  signedHeaders: function signedHeaders() {
+    var headers = [];
+    AWS.util.arrayEach(this.headersToSign(), function iterator(h) {
+      headers.push(h.toLowerCase());
+    });
+    return headers.sort().join(';');
+  },
+
+  canonicalHeaders: function canonicalHeaders() {
+    var headers = this.request.headers;
+    var parts = [];
+    AWS.util.arrayEach(this.headersToSign(), function iterator(h) {
+      parts.push(h.toLowerCase().trim() + ':' + String(headers[h]).trim());
+    });
+    return parts.sort().join('\n') + '\n';
+  },
+
+  headersToSign: function headersToSign() {
+    var headers = [];
+    AWS.util.each(this.request.headers, function iterator(k) {
+      if (k === 'Host' || k === 'Content-Encoding' || k.match(/^X-Amz/i)) {
+        headers.push(k);
+      }
+    });
+    return headers;
+  },
+
+  signature: function signature(credentials) {
+    return AWS.util.crypto.hmac(credentials.secretAccessKey, this.stringToSign(), 'base64');
+  },
+
+  stringToSign: function stringToSign() {
+    var parts = [];
+    parts.push(this.request.method);
+    parts.push('/');
+    parts.push('');
+    parts.push(this.canonicalHeaders());
+    parts.push(this.request.body);
+    return AWS.util.crypto.sha256(parts.join('\n'));
+  }
+
+});
+
+/**
+ * @api private
+ */
+module.exports = AWS.Signers.V3;