tls: multiple PFX in createSecureContext

Add support for multiple PFX files in tls.createSecureContext.
Also added support for object-style PFX pass.

PR-URL: https://github.com/nodejs/node/pull/14793
Fixes: https://github.com/nodejs/node/issues/14756
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Fedor Indutny <fedor.indutny@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

doc/api/tls.md

@@ -934,10 +934,14 @@ changes:
 -->
 
 * `options` {Object}
-  * `pfx` {string|Buffer} Optional PFX or PKCS12 encoded private key and
+  * `pfx` {string|string[]|Buffer|Buffer[]|Object[]} Optional PFX or PKCS12
-    certificate chain. `pfx` is an alternative to providing `key` and `cert`
+    encoded private key and certificate chain. `pfx` is an alternative to
-    individually. PFX is usually encrypted, if it is, `passphrase` will be used
+    providing `key` and `cert` individually. PFX is usually encrypted, if it is,
-    to decrypt it.
+    `passphrase` will be used to decrypt it. Multiple PFX can be provided either
+    as an array of unencrypted PFX buffers, or an array of objects in the form
+    `{buf: <string|buffer>[, passphrase: <string>]}`. The object form can only
+    occur in an array. `object.passphrase` is optional. Encrypted PFX will be
+    decrypted with `object.passphrase` if provided, or `options.passphrase` if it is not.
   * `key` {string|string[]|Buffer|Buffer[]|Object[]} Optional private keys in
     PEM format. PEM allows the option of private keys being encrypted. Encrypted
     keys will be decrypted with `options.passphrase`.  Multiple keys using

lib/_tls_common.js

@@ -161,19 +161,29 @@ exports.createSecureContext = function createSecureContext(options, context) {
   }
 
   if (options.pfx) {
-    var pfx = options.pfx;
-
     if (!crypto)
       crypto = require('crypto');
 
-    pfx = crypto._toBuf(pfx);
+    if (Array.isArray(options.pfx)) {
-    if (passphrase)
+      for (i = 0; i < options.pfx.length; i++) {
-      passphrase = crypto._toBuf(passphrase);
+        const pfx = options.pfx[i];
-
+        const raw = pfx.buf ? pfx.buf : pfx;
+        const buf = crypto._toBuf(raw);
+        const passphrase = pfx.passphrase || options.passphrase;
+        if (passphrase) {
+          c.context.loadPKCS12(buf, crypto._toBuf(passphrase));
+        } else {
+          c.context.loadPKCS12(buf);
+        }
+      }
+    } else {
+      const buf = crypto._toBuf(options.pfx);
+      const passphrase = options.passphrase;
       if (passphrase) {
-      c.context.loadPKCS12(pfx, passphrase);
+        c.context.loadPKCS12(buf, crypto._toBuf(passphrase));
       } else {
-      c.context.loadPKCS12(pfx);
+        c.context.loadPKCS12(buf);
+      }
     }
   }
 

test/fixtures/keys/Makefile

@@ -335,6 +335,14 @@ ec-cert.pem: ec-csr.pem ec-key.pem
 		-signkey ec-key.pem \
 		-out ec-cert.pem
 
+ec-pfx.pem: ec-cert.pem ec-key.pem
+	openssl pkcs12 -export \
+		-descert \
+		-in ec-cert.pem \
+		-inkey ec-key.pem \
+		-out ec-pfx.pem \
+		-password pass:
+
 dh512.pem:
 	openssl dhparam -out dh512.pem 512
 

test/parallel/test-tls-multi-pfx.js

@@ -0,0 +1,50 @@
+'use strict';
+const common = require('../common');
+if (!common.hasCrypto)
+  common.skip('missing crypto');
+
+const assert = require('assert');
+const tls = require('tls');
+const fixtures = require('../common/fixtures');
+
+const options = {
+  pfx: [
+    {
+      buf: fixtures.readKey('agent1-pfx.pem'),
+      passphrase: 'sample'
+    },
+    fixtures.readKey('ec-pfx.pem')
+  ]
+};
+
+const ciphers = [];
+
+const server = tls.createServer(options, function(conn) {
+  conn.end('ok');
+}).listen(0, function() {
+  const ecdsa = tls.connect(this.address().port, {
+    ciphers: 'ECDHE-ECDSA-AES256-GCM-SHA384',
+    rejectUnauthorized: false
+  }, common.mustCall(function() {
+    ciphers.push(ecdsa.getCipher());
+    const rsa = tls.connect(server.address().port, {
+      ciphers: 'ECDHE-RSA-AES256-GCM-SHA384',
+      rejectUnauthorized: false
+    }, common.mustCall(function() {
+      ciphers.push(rsa.getCipher());
+      ecdsa.end();
+      rsa.end();
+      server.close();
+    }));
+  }));
+});
+
+process.on('exit', function() {
+  assert.deepStrictEqual(ciphers, [{
+    name: 'ECDHE-ECDSA-AES256-GCM-SHA384',
+    version: 'TLSv1/SSLv3'
+  }, {
+    name: 'ECDHE-RSA-AES256-GCM-SHA384',
+    version: 'TLSv1/SSLv3'
+  }]);
+});