joyent/node-triton#55 PUBAPI-1166 Use http-signature for generating Authorization, not sprintf

Reviewed by: Trent Mick <trent.mick@joyent.com>

CHANGES.md

@@ -22,6 +22,8 @@
       configuration. This command is still in development.
     - `triton rbac {instance,image,network,package,}role-tags ...` to list 
       and manage role tags on each of those resources.
+- #55 Update of smartdc-auth/sshpk deps, removal of duplicated code for
+  composing Authorization headers
 
 
 ## 2.1.4

lib/cloudapi2.js

@@ -40,6 +40,7 @@ var LOMStream = require('lomstream').LOMStream;
 var os = require('os');
 var querystring = require('querystring');
 var vasync = require('vasync');
+var auth = require('smartdc-auth');
 
 var errors = require('./errors');
 var SaferJsonClient = require('./SaferJsonClient');
@@ -136,27 +137,23 @@ CloudApi.prototype._getAuthHeaders = function _getAuthHeaders(callback) {
     var self = this;
 
     var headers = {};
-    headers.date = new Date().toUTCString();
+
-    var sigstr = 'date: ' + headers.date;
+    var rs = auth.requestSigner({
+        sign: self.sign
+    });
+    headers.date = rs.writeDateHeader();
 
     // TODO: token auth support
     //if (this.token !== undefined) {
     //    obj.headers['X-Auth-Token'] = this.token;
     //}
 
-    self.sign(sigstr, function (err, sig) {
+    rs.sign(function (err, authz) {
-        if (err || !sig) {
+        if (err || !authz) {
             callback(new errors.SigningError(err));
             return;
         }
-
+        headers.authorization = authz;
-        var ident = self.account;
-        if (self.user) {
-            ident += '/users/' + self.user;
-        }
-        headers.authorization = format(
-            'Signature keyId="/%s/keys/%s",algorithm="%s",signature="%s"',
-            ident, sig.keyId, sig.algorithm, sig.signature);
         callback(null, headers);
     });
 };

package.json

@@ -18,8 +18,8 @@
     "read": "1.0.7",
     "restify-clients": "1.1.0",
     "restify-errors": "3.0.0",
-    "sshpk": "1.4.4",
+    "sshpk": "1.6.x >=1.6.2",
-    "smartdc-auth": "2.1.7",
+    "smartdc-auth": "2.2.3",
     "strsplit": "1.0.0",
     "tabula": "1.7.0",
     "tilde-expansion": "0.0.0",