naiveproxy/net/cert/test_root_certs_nss.cc
2018-02-02 05:49:39 -05:00

102 lines
3.5 KiB
C++

// Copyright (c) 2011 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/test_root_certs.h"
#include <cert.h>
#include "base/logging.h"
#include "base/macros.h"
#include "crypto/nss_util.h"
#include "net/cert/x509_certificate.h"
#include "net/cert/x509_util_nss.h"
namespace net {
TestRootCerts::TrustEntry::TrustEntry(ScopedCERTCertificate certificate,
const CERTCertTrust& trust)
: certificate_(std::move(certificate)), trust_(trust) {}
TestRootCerts::TrustEntry::~TrustEntry() = default;
bool TestRootCerts::Add(X509Certificate* certificate) {
ScopedCERTCertificate cert_handle =
x509_util::CreateCERTCertificateFromX509Certificate(certificate);
if (!cert_handle)
return false;
// Preserve the original trust bits so that they can be restored when
// the certificate is removed.
CERTCertTrust original_trust;
SECStatus rv = CERT_GetCertTrust(cert_handle.get(), &original_trust);
if (rv != SECSuccess) {
// CERT_GetCertTrust will fail if the certificate does not have any
// particular trust settings associated with it, and attempts to use
// |original_trust| later to restore the original trust settings will not
// cause the trust settings to be revoked. If the certificate has no
// particular trust settings associated with it, mark the certificate as
// a valid CA certificate with no specific trust.
rv = CERT_DecodeTrustString(&original_trust, "c,c,c");
}
// Change the trust bits to unconditionally trust this certificate.
CERTCertTrust new_trust;
rv = CERT_DecodeTrustString(&new_trust, "TCPu,Cu,Tu");
if (rv != SECSuccess) {
LOG(ERROR) << "Cannot decode certificate trust string.";
return false;
}
rv = CERT_ChangeCertTrust(CERT_GetDefaultCertDB(), cert_handle.get(),
&new_trust);
if (rv != SECSuccess) {
LOG(ERROR) << "Cannot change certificate trust.";
return false;
}
trust_cache_.push_back(
std::make_unique<TrustEntry>(std::move(cert_handle), original_trust));
return true;
}
void TestRootCerts::Clear() {
// Restore the certificate trusts to what they were originally, before
// Add() was called. Work from the rear first, since if a certificate was
// added twice, the second entry's original trust status will be that of
// the first entry, while the first entry contains the desired resultant
// status.
for (auto it = trust_cache_.rbegin(); it != trust_cache_.rend(); ++it) {
CERTCertTrust original_trust = (*it)->trust();
SECStatus rv = CERT_ChangeCertTrust(CERT_GetDefaultCertDB(),
(*it)->certificate(),
&original_trust);
// DCHECK(), rather than LOG(), as a failure to restore the original
// trust can cause flake or hard-to-trace errors in any unit tests that
// occur after Clear() has been called.
DCHECK_EQ(SECSuccess, rv) << "Cannot restore certificate trust.";
}
trust_cache_.clear();
}
bool TestRootCerts::IsEmpty() const {
return trust_cache_.empty();
}
bool TestRootCerts::Contains(CERTCertificate* cert) const {
for (const auto& item : trust_cache_)
if (x509_util::IsSameCertificate(cert, item->certificate()))
return true;
return false;
}
TestRootCerts::~TestRootCerts() {
Clear();
}
void TestRootCerts::Init() {
crypto::EnsureNSSInit();
}
} // namespace net