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93 lines
3.4 KiB
C++
93 lines
3.4 KiB
C++
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "net/ssl/client_cert_identity.h"
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#include "base/bind.h"
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#include "net/cert/x509_util.h"
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#include "net/ssl/ssl_private_key.h"
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namespace net {
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namespace {
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void IdentityOwningPrivateKeyCallback(
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std::unique_ptr<ClientCertIdentity> identity,
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const base::Callback<void(scoped_refptr<SSLPrivateKey>)>&
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private_key_callback,
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scoped_refptr<SSLPrivateKey> private_key) {
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private_key_callback.Run(std::move(private_key));
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}
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} // namespace
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ClientCertIdentity::ClientCertIdentity(scoped_refptr<net::X509Certificate> cert)
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: cert_(std::move(cert)) {}
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ClientCertIdentity::~ClientCertIdentity() = default;
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// static
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void ClientCertIdentity::SelfOwningAcquirePrivateKey(
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std::unique_ptr<ClientCertIdentity> self,
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const base::Callback<void(scoped_refptr<SSLPrivateKey>)>&
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private_key_callback) {
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ClientCertIdentity* self_ptr = self.get();
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auto wrapped_private_key_callback =
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base::Bind(&IdentityOwningPrivateKeyCallback, base::Passed(&self),
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private_key_callback);
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self_ptr->AcquirePrivateKey(wrapped_private_key_callback);
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}
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void ClientCertIdentity::SetIntermediates(
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std::vector<bssl::UniquePtr<CRYPTO_BUFFER>> intermediates) {
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// Allow UTF-8 inside PrintableStrings in client certificates. See
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// crbug.com/770323.
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// TODO(mattm): Perhaps X509Certificate should have a method to clone the
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// X509Certificate but with different intermediates, to avoid reparsing here
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// (and avoid needing to match the parsing options here with where the
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// X509Certificate was initially created.)
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X509Certificate::UnsafeCreateOptions options;
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options.printable_string_is_utf8 = true;
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cert_ = X509Certificate::CreateFromBufferUnsafeOptions(
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x509_util::DupCryptoBuffer(cert_->cert_buffer()),
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std::move(intermediates), options);
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// |cert_->cert_buffer()| was already successfully parsed, so this should
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// never fail.
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DCHECK(cert_);
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}
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ClientCertIdentitySorter::ClientCertIdentitySorter()
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: now_(base::Time::Now()) {}
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bool ClientCertIdentitySorter::operator()(
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const std::unique_ptr<ClientCertIdentity>& a_identity,
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const std::unique_ptr<ClientCertIdentity>& b_identity) const {
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X509Certificate* a = a_identity->certificate();
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X509Certificate* b = b_identity->certificate();
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DCHECK(a);
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DCHECK(b);
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// Certificates that are expired/not-yet-valid are sorted last.
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bool a_is_valid = now_ >= a->valid_start() && now_ <= a->valid_expiry();
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bool b_is_valid = now_ >= b->valid_start() && now_ <= b->valid_expiry();
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if (a_is_valid != b_is_valid)
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return a_is_valid && !b_is_valid;
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// Certificates with longer expirations appear as higher priority (less
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// than) certificates with shorter expirations.
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if (a->valid_expiry() != b->valid_expiry())
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return a->valid_expiry() > b->valid_expiry();
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// If the expiration dates are equivalent, certificates that were issued
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// more recently should be prioritized over older certificates.
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if (a->valid_start() != b->valid_start())
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return a->valid_start() > b->valid_start();
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// Otherwise, prefer client certificates with shorter chains.
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const auto& a_intermediates = a->intermediate_buffers();
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const auto& b_intermediates = b->intermediate_buffers();
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return a_intermediates.size() < b_intermediates.size();
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}
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} // namespace net
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