test: tls cert chain completion scenarios

Backport-PR-URL: #12468
PR-URL: #10389
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>

test/parallel/test-tls-cert-chains-concat.js

@@ -0,0 +1,50 @@
+'use strict';
+const common = require('../common');
+
+// Check cert chain is received by client, and is completed with the ca cert
+// known to the client.
+
+const join = require('path').join;
+const {
+  assert, connect, debug, keys
+} = require(join(common.fixturesDir, 'tls-connect'))();
+
+// agent6-cert.pem includes cert for agent6 and ca3
+connect({
+  client: {
+    checkServerIdentity: (servername, cert) => { },
+    ca: keys.agent6.ca,
+  },
+  server: {
+    cert: keys.agent6.cert,
+    key: keys.agent6.key,
+  },
+}, function(err, pair, cleanup) {
+  assert.ifError(err);
+
+  const peer = pair.client.conn.getPeerCertificate();
+  debug('peer:\n', peer);
+  assert.strictEqual(peer.subject.emailAddress, 'adam.lippai@tresorit.com');
+  assert.strictEqual(peer.subject.CN, 'Ádám Lippai'),
+  assert.strictEqual(peer.issuer.CN, 'ca3');
+  assert.strictEqual(peer.serialNumber, 'C4CD893EF9A75DCC');
+
+  const next = pair.client.conn.getPeerCertificate(true).issuerCertificate;
+  const root = next.issuerCertificate;
+  delete next.issuerCertificate;
+  debug('next:\n', next);
+  assert.strictEqual(next.subject.CN, 'ca3');
+  assert.strictEqual(next.issuer.CN, 'ca1');
+  assert.strictEqual(next.serialNumber, '9A84ABCFB8A72ABF');
+
+  debug('root:\n', root);
+  assert.strictEqual(root.subject.CN, 'ca1');
+  assert.strictEqual(root.issuer.CN, 'ca1');
+  assert.strictEqual(root.serialNumber, '8DF21C01468AF393');
+
+  // No client cert, so empty object returned.
+  assert.deepStrictEqual(pair.server.conn.getPeerCertificate(), {});
+  assert.deepStrictEqual(pair.server.conn.getPeerCertificate(true), {});
+
+  return cleanup();
+});

test/parallel/test-tls-cert-chains-in-ca.js

@@ -0,0 +1,46 @@
+'use strict';
+const common = require('../common');
+
+// Check cert chain is received by client, and is completed with the ca cert
+// known to the client.
+
+const join = require('path').join;
+const {
+  assert, connect, debug, keys
+} = require(join(common.fixturesDir, 'tls-connect'))();
+
+
+// agent6-cert.pem includes cert for agent6 and ca3, split it apart and
+// provide ca3 in the .ca property.
+const agent6Chain = keys.agent6.cert.split('-----END CERTIFICATE-----')
+  .map((c) => { return c + '-----END CERTIFICATE-----'; });
+const agent6End = agent6Chain[0];
+const agent6Middle = agent6Chain[1];
+connect({
+  client: {
+    checkServerIdentity: (servername, cert) => { },
+    ca: keys.agent6.ca,
+  },
+  server: {
+    cert: agent6End,
+    key: keys.agent6.key,
+    ca: agent6Middle,
+  },
+}, function(err, pair, cleanup) {
+  assert.ifError(err);
+
+  const peer = pair.client.conn.getPeerCertificate();
+  debug('peer:\n', peer);
+  assert.strictEqual(peer.serialNumber, 'C4CD893EF9A75DCC');
+
+  const next = pair.client.conn.getPeerCertificate(true).issuerCertificate;
+  const root = next.issuerCertificate;
+  delete next.issuerCertificate;
+  debug('next:\n', next);
+  assert.strictEqual(next.serialNumber, '9A84ABCFB8A72ABF');
+
+  debug('root:\n', root);
+  assert.strictEqual(root.serialNumber, '8DF21C01468AF393');
+
+  return cleanup();
+});