Add unittests for net::TestRootCerts and regenerate test certificates

net/cert/test_root_certs_unittest.cc

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/files/file_path.h"
+#include "build/build_config.h"
+#include "net/base/net_errors.h"
+#include "net/base/test_data_directory.h"
+#include "net/cert/cert_status_flags.h"
+#include "net/cert/cert_verify_proc.h"
+#include "net/cert/cert_verify_result.h"
+#include "net/cert/test_root_certs.h"
+#include "net/cert/x509_certificate.h"
+#include "net/test/cert_test_util.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+#if defined(USE_NSS) || defined(OS_IOS)
+#include <nss.h>
+#endif
+
+namespace net {
+
+namespace {
+
+// The local test root certificate.
+const char kRootCertificateFile[] = "root_ca_cert.pem";
+// A certificate issued by the local test root for 127.0.0.1.
+const char kGoodCertificateFile[] = "ok_cert.pem";
+
+}  // namespace
+
+// Test basic functionality when adding from an existing X509Certificate.
+TEST(TestRootCertsTest, AddFromPointer) {
+  scoped_refptr<X509Certificate> root_cert =
+      ImportCertFromFile(GetTestCertsDirectory(), kRootCertificateFile);
+  ASSERT_NE(static_cast<X509Certificate*>(NULL), root_cert);
+
+  TestRootCerts* test_roots = TestRootCerts::GetInstance();
+  ASSERT_NE(static_cast<TestRootCerts*>(NULL), test_roots);
+  EXPECT_TRUE(test_roots->IsEmpty());
+
+  EXPECT_TRUE(test_roots->Add(root_cert));
+  EXPECT_FALSE(test_roots->IsEmpty());
+
+  test_roots->Clear();
+  EXPECT_TRUE(test_roots->IsEmpty());
+}
+
+// Test basic functionality when adding directly from a file, which should
+// behave the same as when adding from an existing certificate.
+TEST(TestRootCertsTest, AddFromFile) {
+  TestRootCerts* test_roots = TestRootCerts::GetInstance();
+  ASSERT_NE(static_cast<TestRootCerts*>(NULL), test_roots);
+  EXPECT_TRUE(test_roots->IsEmpty());
+
+  base::FilePath cert_path =
+      GetTestCertsDirectory().AppendASCII(kRootCertificateFile);
+  EXPECT_TRUE(test_roots->AddFromFile(cert_path));
+  EXPECT_FALSE(test_roots->IsEmpty());
+
+  test_roots->Clear();
+  EXPECT_TRUE(test_roots->IsEmpty());
+}
+
+// Test that TestRootCerts actually adds the appropriate trust status flags
+// when requested, and that the trusted status is cleared once the root is
+// removed the TestRootCerts. This test acts as a canary/sanity check for
+// the results of the rest of net_unittests, ensuring that the trust status
+// is properly being set and cleared.
+TEST(TestRootCertsTest, OverrideTrust) {
+#if defined(USE_NSS) || defined(OS_IOS)
+  if (NSS_VersionCheck("3.14.2") && !NSS_VersionCheck("3.15")) {
+    // See http://bugzil.la/863947 for details
+    LOG(INFO) << "Skipping test for NSS 3.14.2 - NSS 3.15";
+    return;
+  }
+#endif
+
+  TestRootCerts* test_roots = TestRootCerts::GetInstance();
+  ASSERT_NE(static_cast<TestRootCerts*>(NULL), test_roots);
+  EXPECT_TRUE(test_roots->IsEmpty());
+
+  scoped_refptr<X509Certificate> test_cert =
+      ImportCertFromFile(GetTestCertsDirectory(), kGoodCertificateFile);
+  ASSERT_NE(static_cast<X509Certificate*>(NULL), test_cert);
+
+  // Test that the good certificate fails verification, because the root
+  // certificate should not yet be trusted.
+  int flags = 0;
+  CertVerifyResult bad_verify_result;
+  scoped_refptr<CertVerifyProc> verify_proc(CertVerifyProc::CreateDefault());
+  int bad_status = verify_proc->Verify(test_cert,
+                                       "127.0.0.1",
+                                       flags,
+                                       NULL,
+                                       CertificateList(),
+                                       &bad_verify_result);
+  EXPECT_NE(OK, bad_status);
+  EXPECT_NE(0u, bad_verify_result.cert_status & CERT_STATUS_AUTHORITY_INVALID);
+
+  // Add the root certificate and mark it as trusted.
+  EXPECT_TRUE(test_roots->AddFromFile(
+      GetTestCertsDirectory().AppendASCII(kRootCertificateFile)));
+  EXPECT_FALSE(test_roots->IsEmpty());
+
+  // Test that the certificate verification now succeeds, because the
+  // TestRootCerts is successfully imbuing trust.
+  CertVerifyResult good_verify_result;
+  int good_status = verify_proc->Verify(test_cert,
+                                        "127.0.0.1",
+                                        flags,
+                                        NULL,
+                                        CertificateList(),
+                                        &good_verify_result);
+  EXPECT_EQ(OK, good_status);
+  EXPECT_EQ(0u, good_verify_result.cert_status);
+
+  test_roots->Clear();
+  EXPECT_TRUE(test_roots->IsEmpty());
+
+  // Ensure that when the TestRootCerts is cleared, the trust settings
+  // revert to their original state, and don't linger. If trust status
+  // lingers, it will likely break other tests in net_unittests.
+  CertVerifyResult restored_verify_result;
+  int restored_status = verify_proc->Verify(test_cert,
+                                            "127.0.0.1",
+                                            flags,
+                                            NULL,
+                                            CertificateList(),
+                                            &restored_verify_result);
+  EXPECT_NE(OK, restored_status);
+  EXPECT_NE(0u,
+            restored_verify_result.cert_status & CERT_STATUS_AUTHORITY_INVALID);
+  EXPECT_EQ(bad_status, restored_status);
+  EXPECT_EQ(bad_verify_result.cert_status, restored_verify_result.cert_status);
+}
+
+// TODO(rsleevi): Add tests for revocation checking via CRLs, ensuring that
+// TestRootCerts properly injects itself into the validation process. See
+// http://crbug.com/63958
+
+}  // namespace net