tls: parsing multiple values of a key in ssl certificate

Fixes #2864.

lib/tls.js

@@ -197,7 +197,14 @@ function parseCertString(s) {
     if (sepIndex > 0) {
       var key = parts[i].slice(0, sepIndex);
       var value = parts[i].slice(sepIndex + 1);
-      out[key] = value;
+      if (key in out) {
+        if (!Array.isArray(out[key])) {
+          out[key] = [out[key]];
+        }
+        out[key].push(value);
+      } else {
+        out[key] = value;
+      }
     }
   }
   return out;

test/fixtures/multi-alice.crt

@@ -0,0 +1,22 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----

test/simple/test-tls-peer-certificate-multi-keys.js

@@ -0,0 +1,58 @@
+// Copyright Joyent, Inc. and other Node contributors.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to permit
+// persons to whom the Software is furnished to do so, subject to the
+// following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
+// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+// USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+if (!process.versions.openssl) {
+  console.error('Skipping because node compiled without OpenSSL.');
+  process.exit(0);
+}
+
+var common = require('../common');
+var assert = require('assert');
+var tls = require('tls');
+var fs = require('fs');
+var util = require('util');
+var join = require('path').join;
+var spawn = require('child_process').spawn;
+
+var options = {
+  key: fs.readFileSync(join(common.fixturesDir, 'agent.key')),
+  cert: fs.readFileSync(join(common.fixturesDir, 'multi-alice.crt'))
+};
+var verified = false;
+
+var server = tls.createServer(options, function(cleartext) {
+  cleartext.end('World');
+});
+server.listen(common.PORT, function() {
+  var socket = tls.connect({port: common.PORT}, function() {
+    var peerCert = socket.getPeerCertificate();
+    common.debug(util.inspect(peerCert));
+    assert.deepEqual(peerCert.subject.OU,
+                     ['Information Technology', 'Engineering', 'Marketing']);
+    verified = true;
+    server.close();
+  });
+  socket.end('Hello');
+});
+
+process.on('exit', function() {
+  assert.ok(verified);
+});