blob: dfcaecd73d30920c85b644f7726144e487bda8dd [file] [log] [blame]
// Copyright (c) 2017 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 "net/cert/known_roots_mac.h"
#include <Security/Security.h>
#include <algorithm>
#include <vector>
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "crypto/mac_security_services_lock.h"
#include "net/cert/x509_util_mac.h"
using base::ScopedCFTypeRef;
namespace net {
namespace {
// Helper class for managing the set of OS X Known Roots. This is only safe
// to initialize while the crypto::GetMacSecurityServicesLock() is held, due
// to calling into Security.framework functions; however, once initialized,
// it can be called at any time.
// In practice, due to lazy initialization, it's best to just always guard
// accesses with the lock.
class OSXKnownRootHelper {
bool IsKnownRoot(SecCertificateRef cert) {
// If there are no known roots, then an API failure occurred. For safety,
// assume that all certificates are issued by known roots.
if (known_roots_.empty())
return true;
HashValue hash(x509_util::CalculateFingerprint256(cert));
return IsSHA256HashInSortedArray(hash, known_roots_);
friend struct base::LazyInstanceTraitsBase<OSXKnownRootHelper>;
OSXKnownRootHelper() {
CFArrayRef cert_array = NULL;
OSStatus rv = SecTrustSettingsCopyCertificates(
kSecTrustSettingsDomainSystem, &cert_array);
if (rv != noErr) {
LOG(ERROR) << "Unable to determine trusted roots; assuming all roots are "
<< "trusted! Error " << rv;
base::ScopedCFTypeRef<CFArrayRef> scoped_array(cert_array);
for (CFIndex i = 0, size = CFArrayGetCount(cert_array); i < size; ++i) {
SecCertificateRef cert = reinterpret_cast<SecCertificateRef>(
const_cast<void*>(CFArrayGetValueAtIndex(cert_array, i)));
std::sort(known_roots_.begin(), known_roots_.end());
~OSXKnownRootHelper() {}
std::vector<SHA256HashValue> known_roots_;
base::LazyInstance<OSXKnownRootHelper>::Leaky g_known_roots =
} // namespace
bool IsKnownRoot(SecCertificateRef cert) {
return g_known_roots.Get().IsKnownRoot(cert);
void InitializeKnownRoots() {
base::AutoLock lock(crypto::GetMacSecurityServicesLock());
} // namespace net