src: fix missing extra ca in tls.rootCertificates

Fixes tls.rootCertificates missing certificates loaded from NODE_EXTRA_CA_CERTS.

Fixes: nodejs#32074

src/node_crypto.cc

@@ -988,19 +988,33 @@ static X509_STORE* NewRootCertStore() {
 
 void GetRootCertificates(const FunctionCallbackInfo<Value>& args) {
   Environment* env = Environment::GetCurrent(args);
-  Local<Value> result[arraysize(root_certs)];
 
-  for (size_t i = 0; i < arraysize(root_certs); i++) {
-    if (!String::NewFromOneByte(
-            env->isolate(),
-            reinterpret_cast<const uint8_t*>(root_certs[i]),
-            NewStringType::kNormal).ToLocal(&result[i])) {
-      return;
+  if (root_cert_store == nullptr) {
+    root_cert_store = NewRootCertStore();
+  }
+
+  stack_st_X509_OBJECT* objs = X509_STORE_get0_objects(root_cert_store);
+  int num_objs = sk_X509_OBJECT_num(objs);
+
+  std::vector<Local<Value>> result;
+  result.reserve(num_objs);
+
+  for (size_t i = 0; i < num_objs; i++) {
+    X509_OBJECT* obj = sk_X509_OBJECT_value(objs, i);
+    if (X509_OBJECT_get_type(obj) == X509_LU_X509) {
+      X509* cert = X509_OBJECT_get0_X509(obj);
+
+      Local<Value> value;
+      if (!X509ToPEM(env, cert).ToLocal(&value)) {
+        return;
+      }
+
+      result.push_back(value);
     }
   }
 
   args.GetReturnValue().Set(
-      Array::New(env->isolate(), result, arraysize(root_certs)));
+      Array::New(env->isolate(), result.data(), result.size()));
 }
 
 

src/node_crypto_common.cc

@@ -968,6 +968,16 @@ MaybeLocal<Value> GetPeerCert(
   return result;
 }
 
+MaybeLocal<Value> X509ToPEM(Environment* env, X509* cert) {
+  BIOPointer bio(BIO_new(BIO_s_mem()));
+
+  if (PEM_write_bio_X509(bio.get(), cert) == 0) {
+    return Undefined(env->isolate());
+  }
+
+  return ToV8Value(env, bio);
+}
+
 MaybeLocal<Object> X509ToObject(Environment* env, X509* cert) {
   EscapableHandleScope scope(env->isolate());
   Local<Context> context = env->context();

src/node_crypto_common.h

@@ -131,6 +131,10 @@ v8::MaybeLocal<v8::Object> X509ToObject(
     Environment* env,
     X509* cert);
 
+v8::MaybeLocal<v8::Value> X509ToPEM(
+    Environment* env,
+    X509* cert);
+
 }  // namespace crypto
 }  // namespace node
 

test/parallel/test-tls-root-certificates.js

@@ -2,30 +2,49 @@
 const common = require('../common');
 if (!common.hasCrypto) common.skip('missing crypto');
 
+const fixtures = require('../common/fixtures');
 const assert = require('assert');
 const tls = require('tls');
-
-assert(Array.isArray(tls.rootCertificates));
-assert(tls.rootCertificates.length > 0);
-
-// Getter should return the same object.
-assert.strictEqual(tls.rootCertificates, tls.rootCertificates);
-
-// Array is immutable...
-assert.throws(() => tls.rootCertificates[0] = 0, /TypeError/);
-assert.throws(() => tls.rootCertificates.sort(), /TypeError/);
-
-// ...and so is the property.
-assert.throws(() => tls.rootCertificates = 0, /TypeError/);
-
-// Does not contain duplicates.
-assert.strictEqual(tls.rootCertificates.length,
-                   new Set(tls.rootCertificates).size);
-
-assert(tls.rootCertificates.every((s) => {
-  return s.startsWith('-----BEGIN CERTIFICATE-----\n');
-}));
-
-assert(tls.rootCertificates.every((s) => {
-  return s.endsWith('\n-----END CERTIFICATE-----');
-}));
+const { fork } = require('child_process');
+
+if (process.argv[2] !== 'child') {
+  // Parent
+  const NODE_EXTRA_CA_CERTS = fixtures.path('keys', 'ca1-cert.pem');
+
+  fork(
+    __filename,
+    ['child'],
+    { env: { ...process.env, NODE_EXTRA_CA_CERTS } }
+  ).on('exit', common.mustCall(function(status) {
+    assert.strictEqual(status, 0);
+  }));
+} else {
+  // Child
+  assert(Array.isArray(tls.rootCertificates));
+  assert(tls.rootCertificates.length > 0);
+
+  // Getter should return the same object.
+  assert.strictEqual(tls.rootCertificates, tls.rootCertificates);
+
+  // Array is immutable...
+  assert.throws(() => tls.rootCertificates[0] = 0, /TypeError/);
+  assert.throws(() => tls.rootCertificates.sort(), /TypeError/);
+
+  // ...and so is the property.
+  assert.throws(() => tls.rootCertificates = 0, /TypeError/);
+
+  // Does not contain duplicates.
+  assert.strictEqual(tls.rootCertificates.length,
+                     new Set(tls.rootCertificates).size);
+
+  assert(tls.rootCertificates.every((s) => {
+    return s.startsWith('-----BEGIN CERTIFICATE-----\n');
+  }));
+
+  assert(tls.rootCertificates.every((s) => {
+    return s.endsWith('\n-----END CERTIFICATE-----\n');
+  }));
+
+  const extraCert = fixtures.readKey('ca1-cert.pem', 'utf8');
+  assert(tls.rootCertificates.includes(extraCert));
+}