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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/containers/span.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/path_service.h"
#include "base/strings/string_number_conversions.h"
#include "base/threading/scoped_blocking_call.h"
#include "build/build_config.h"
#include "chrome/browser/interstitials/security_interstitial_page_test_utils.h"
#include "chrome/browser/ssl/cert_verifier_platform_browser_test.h"
#include "chrome/browser/ssl/ssl_browsertest_util.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/test/base/chrome_test_utils.h"
#include "chrome/test/base/platform_browser_test.h"
#include "components/security_interstitials/core/controller_client.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/network_service_instance.h"
#include "content/public/browser/ssl_status.h"
#include "content/public/browser/web_contents.h"
#include "content/public/test/browser_test.h"
#include "content/public/test/browser_test_utils.h"
#include "net/base/net_errors.h"
#include "net/cert/cert_status_flags.h"
#include "net/cert/cert_verify_result.h"
#include "net/cert/mock_cert_verifier.h"
#include "net/cert/x509_certificate.h"
#include "net/dns/mock_host_resolver.h"
#include "net/test/embedded_test_server/embedded_test_server.h"
#include "net/test/test_data_directory.h"
#include "services/cert_verifier/public/mojom/cert_verifier_service_factory.mojom.h"
namespace AuthState = ssl_test_util::AuthState;
namespace CertError = ssl_test_util::CertError;
namespace {
class CRLSetBrowserTest : public PlatformBrowserTest {
public:
CRLSetBrowserTest() : https_server_(net::EmbeddedTestServer::TYPE_HTTPS) {}
~CRLSetBrowserTest() override = default;
void SetUpOnMainThread() override {
PlatformBrowserTest::SetUpOnMainThread();
host_resolver()->AddRule("*", "127.0.0.1");
https_server_.ServeFilesFromSourceDirectory("chrome/test/data/");
}
protected:
content::WebContents* GetActiveWebContents() {
return chrome_test_utils::GetActiveWebContents(this);
}
net::EmbeddedTestServer https_server_;
};
const char kHstsTestHostName[] = "hsts-example.test";
} // namespace
IN_PROC_BROWSER_TEST_F(CRLSetBrowserTest, TestCRLSetRevoked) {
ASSERT_TRUE(https_server_.Start());
std::string crl_set_bytes;
{
base::ScopedAllowBlockingForTesting allow_blocking;
base::ReadFileToString(
net::GetTestCertsDirectory().AppendASCII("crlset_by_leaf_spki.raw"),
&crl_set_bytes);
}
base::RunLoop run_loop;
content::GetCertVerifierServiceFactory()->UpdateCRLSet(
base::as_byte_span(crl_set_bytes), run_loop.QuitClosure());
run_loop.Run();
bool interstitial_expected =
ssl_test_util::CertVerifierSupportsCRLSetBlocking();
// If an interstitial is expected, NavigateToURL should fail, because the
// interstitial will be the committed URL, rather than the navigated URL.
EXPECT_EQ(!interstitial_expected,
content::NavigateToURL(GetActiveWebContents(),
https_server_.GetURL("/ssl/google.html")));
ASSERT_EQ(interstitial_expected,
chrome_browser_interstitials::IsShowingInterstitial(
GetActiveWebContents()));
ASSERT_TRUE(
WaitForRenderFrameReady(GetActiveWebContents()->GetPrimaryMainFrame()));
if (interstitial_expected) {
ASSERT_TRUE(chrome_browser_interstitials::IsShowingSSLInterstitial(
GetActiveWebContents()));
ssl_test_util::CheckAuthenticationBrokenState(
GetActiveWebContents(), net::CERT_STATUS_REVOKED,
AuthState::SHOWING_INTERSTITIAL);
} else {
ssl_test_util::CheckAuthenticatedState(GetActiveWebContents(),
AuthState::NONE);
}
}
// Test that CRLSets configured to block MITM certificates cause the
// known interception interstitial.
IN_PROC_BROWSER_TEST_F(CRLSetBrowserTest, TestCRLSetBlockedInterception) {
ASSERT_TRUE(https_server_.Start());
// Load a CRLSet that marks the root as a blocked MITM.
std::string crl_set_bytes;
{
base::ScopedAllowBlockingForTesting allow_blocking;
base::ReadFileToString(net::GetTestCertsDirectory().AppendASCII(
"crlset_blocked_interception_by_root.raw"),
&crl_set_bytes);
}
base::RunLoop run_loop;
content::GetCertVerifierServiceFactory()->UpdateCRLSet(
base::as_byte_span(crl_set_bytes), run_loop.QuitClosure());
run_loop.Run();
bool interstitial_expected =
ssl_test_util::CertVerifierSupportsCRLSetBlocking();
// If an interstitial is expected, NavigateToURL should fail, because the
// interstitial will be the committed URL, rather than the navigated URL.
EXPECT_EQ(!interstitial_expected,
content::NavigateToURL(GetActiveWebContents(),
https_server_.GetURL("/ssl/google.html")));
ASSERT_EQ(interstitial_expected,
chrome_browser_interstitials::IsShowingInterstitial(
GetActiveWebContents()));
ASSERT_TRUE(
WaitForRenderFrameReady(GetActiveWebContents()->GetPrimaryMainFrame()));
if (interstitial_expected) {
ASSERT_TRUE(
chrome_browser_interstitials::IsShowingBlockedInterceptionInterstitial(
GetActiveWebContents()));
ssl_test_util::CheckAuthenticationBrokenState(
GetActiveWebContents(),
net::CERT_STATUS_KNOWN_INTERCEPTION_BLOCKED | net::CERT_STATUS_REVOKED,
AuthState::SHOWING_INTERSTITIAL);
} else {
ssl_test_util::CheckAuthenticatedState(GetActiveWebContents(),
AuthState::NONE);
}
}
// Test that CRLSets configured to identify known MITM certificates do not
// cause an interstitial unless the MITM certificate is blocked.
IN_PROC_BROWSER_TEST_F(CRLSetBrowserTest, TestCRLSetKnownInterception) {
ASSERT_TRUE(https_server_.Start());
// Load a CRLSet that marks the root as a known MITM.
std::string crl_set_bytes;
{
base::ScopedAllowBlockingForTesting allow_blocking;
base::ReadFileToString(net::GetTestCertsDirectory().AppendASCII(
"crlset_known_interception_by_root.raw"),
&crl_set_bytes);
}
base::RunLoop run_loop;
content::GetCertVerifierServiceFactory()->UpdateCRLSet(
base::as_byte_span(crl_set_bytes), run_loop.QuitClosure());
run_loop.Run();
// Navigate to the page. It should not cause an interstitial, but should
// allow for the display of additional information that interception is
// happening.
ASSERT_TRUE(content::NavigateToURL(GetActiveWebContents(),
https_server_.GetURL("/ssl/google.html")));
ssl_test_util::CheckAuthenticatedState(GetActiveWebContents(),
AuthState::NONE);
content::NavigationEntry* entry =
GetActiveWebContents()->GetController().GetVisibleEntry();
ASSERT_TRUE(entry);
EXPECT_TRUE(entry->GetSSL().cert_status &
net::CERT_STATUS_KNOWN_INTERCEPTION_DETECTED);
}
// While TestCRLSetBlockedInterception and TestCRLSetKnownInterception use
// a real CertVerifier in order to test that a real CRLSet is delivered and
// processed, testing HSTS requires with a MockCertVerifier so that the
// cert will match the intended hostname, and thus only fail because it's a
// blocked MITM certificate. This requires using a CertVerifierBrowserTest,
// which is not suitable for the previous tests because it does not test
// CRLSets.
class CRLSetInterceptionBrowserTest : public CertVerifierPlatformBrowserTest {
public:
CRLSetInterceptionBrowserTest()
: CertVerifierPlatformBrowserTest(),
https_server_(net::EmbeddedTestServer::TYPE_HTTPS) {}
void SetUpOnMainThread() override {
CertVerifierPlatformBrowserTest::SetUpOnMainThread();
ssl_test_util::SetHSTSForHostName(
GetActiveWebContents()->GetBrowserContext(), kHstsTestHostName);
host_resolver()->AddRule("*", "127.0.0.1");
https_server_.ServeFilesFromSourceDirectory("chrome/test/data/");
}
protected:
content::WebContents* GetActiveWebContents() {
return chrome_test_utils::GetActiveWebContents(this);
}
net::EmbeddedTestServer https_server_;
};
IN_PROC_BROWSER_TEST_F(CRLSetInterceptionBrowserTest,
KnownInterceptionWorksOnHSTS) {
ASSERT_TRUE(https_server_.Start());
net::CertVerifyResult verify_result;
verify_result.verified_cert = https_server_.GetCertificate();
verify_result.cert_status =
net::CERT_STATUS_REVOKED | net::CERT_STATUS_KNOWN_INTERCEPTION_BLOCKED;
// Simulate verification returning that the certificate is a blocked
// interception certificate.
mock_cert_verifier()->AddResultForCertAndHost(
https_server_.GetCertificate(), kHstsTestHostName, verify_result,
net::ERR_CERT_KNOWN_INTERCEPTION_BLOCKED);
GURL::Replacements replacements;
replacements.SetHostStr(kHstsTestHostName);
GURL url =
https_server_.GetURL("/ssl/google.html").ReplaceComponents(replacements);
// Expect navigation to fail, because this should always result in an
// interstitial.
ASSERT_FALSE(content::NavigateToURL(GetActiveWebContents(), url));
ASSERT_TRUE(chrome_browser_interstitials::IsShowingInterstitial(
GetActiveWebContents()));
ASSERT_TRUE(
WaitForRenderFrameReady(GetActiveWebContents()->GetPrimaryMainFrame()));
ssl_test_util::CheckSecurityState(
GetActiveWebContents(),
net::CERT_STATUS_KNOWN_INTERCEPTION_BLOCKED | net::CERT_STATUS_REVOKED,
security_state::DANGEROUS, AuthState::SHOWING_INTERSTITIAL);
ASSERT_TRUE(
chrome_browser_interstitials::IsShowingBlockedInterceptionInterstitial(
GetActiveWebContents()));
// Expect there to be a proceed link, even for HSTS.
EXPECT_TRUE(chrome_browser_interstitials::InterstitialHasProceedLink(
GetActiveWebContents()->GetPrimaryMainFrame()));
}
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