improve on a DEPTH_ZERO_SELF_SIGNED_CERT error

from:
    triton account: error: DEPTH_ZERO_SELF_SIGNED_CERT
to this:
    triton account: error (SelfSignedCert): could not access CloudAPI https://10.88.88.3 because it uses a self-signed TLS certificate and your current profile is not configured for insecure access: DEPTH_ZERO_SELF_SIGNED_CERT

lib/cli.js

@@ -309,7 +309,7 @@ function main(argv) {
         var showErr = (cli.showErr !== undefined ? cli.showErr : true);
 
         if (err && showErr) {
-            var code = (err.body ? err.body.code : err.code);
+            var code = (err.body ? err.body.code : err.code) || err.restCode;
             if (code === 'NoCommand') {
                 /* jsl:pass */
             } else if (err.message !== undefined) {

lib/cloudapi2.js

@@ -247,6 +247,7 @@ CloudApi.prototype._request = function _request(options, callback) {
  */
 CloudApi.prototype._passThrough =
 function _passThrough(endpoint, opts, cb) {
+    var self = this;
     if (typeof (opts) === 'function') {
         cb = opts;
         opts = null;
@@ -259,6 +260,21 @@ function _passThrough(endpoint, opts, cb) {
 
     var p = this._path(endpoint, opts);
     this._request(p, function (err, req, res, body) {
+        /*
+         * Improve this kind of error message:
+         *
+         *  Error: DEPTH_ZERO_SELF_SIGNED_CERT
+         *      at SecurePair.<anonymous> (tls.js:1381:32)
+         *      at SecurePair.emit (events.js:92:17)
+         *
+         * TODO: could generalize this into a wrapErr method.
+         */
+        if (err && err.message === 'DEPTH_ZERO_SELF_SIGNED_CERT' &&
+            self.client.rejectUnauthorized)
+        {
+            err = new errors.SelfSignedCertError(err, self.url);
+        }
+
         cb(err, body, res);
     });
 };

lib/errors.js

@@ -113,6 +113,23 @@ function SigningError(cause) {
 util.inherits(SigningError, TritonError);
 
 
+/**
+ * A 'DEPTH_ZERO_SELF_SIGNED_CERT' An error signing a request.
+ */
+function SelfSignedCertError(cause, url) {
+    var msg = format('could not access CloudAPI %s because it uses a ' +
+        'self-signed TLS certificate and your current profile is not ' +
+        'configured for insecure access', url);
+    TritonError.call(this, {
+        cause: cause,
+        message: msg,
+        code: 'SelfSignedCert',
+        exitStatus: 1
+    });
+}
+util.inherits(SelfSignedCertError, TritonError);
+
+
 /**
  * Multiple errors in a group.
  */
@@ -143,6 +160,7 @@ module.exports = {
     ConfigError: ConfigError,
     UsageError: UsageError,
     SigningError: SigningError,
+    SelfSignedCertError: SelfSignedCertError,
     MultiError: MultiError
 };
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