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// 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 "net/socket/ssl_host_info.h"
#include "base/string_piece.h"
#include "net/base/cert_verifier.h"
#include "net/base/ssl_config_service.h"
#include "net/base/x509_certificate.h"
#include "net/socket/ssl_client_socket.h"
#include "net/socket/ssl_host_info.pb.h"
namespace net {
SSLHostInfo::State::State()
: npn_valid(false),
npn_status(SSLClientSocket::kNextProtoUnsupported) {
}
SSLHostInfo::State::~State() {}
SSLHostInfo::SSLHostInfo(
const std::string& hostname,
const SSLConfig& ssl_config)
: hostname_(hostname),
cert_valid_(false),
rev_checking_enabled_(ssl_config.rev_checking_enabled),
verify_ev_cert_(ssl_config.verify_ev_cert),
callback_(new CancelableCompletionCallback<SSLHostInfo>(
ALLOW_THIS_IN_INITIALIZER_LIST(this),
&SSLHostInfo::VerifyCallback)) {
state_.npn_valid = false;
}
SSLHostInfo::~SSLHostInfo() {}
// This array and the next two functions serve to map between the internal NPN
// status enum (which might change across versions) and the protocol buffer
// based enum (which will not).
static const struct {
SSLClientSocket::NextProtoStatus npn_status;
SSLHostInfoProto::NextProtoStatus proto_status;
} kNPNStatusMapping[] = {
{ SSLClientSocket::kNextProtoUnsupported, SSLHostInfoProto::UNSUPPORTED },
{ SSLClientSocket::kNextProtoNegotiated, SSLHostInfoProto::NEGOTIATED },
{ SSLClientSocket::kNextProtoNoOverlap, SSLHostInfoProto::NO_OVERLAP },
};
static SSLClientSocket::NextProtoStatus NPNStatusFromProtoStatus(
SSLHostInfoProto::NextProtoStatus proto_status) {
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kNPNStatusMapping) - 1; i++) {
if (kNPNStatusMapping[i].proto_status == proto_status)
return kNPNStatusMapping[i].npn_status;
}
return kNPNStatusMapping[ARRAYSIZE_UNSAFE(kNPNStatusMapping) - 1].npn_status;
}
static SSLHostInfoProto::NextProtoStatus ProtoStatusFromNPNStatus(
SSLClientSocket::NextProtoStatus npn_status) {
for (size_t i = 0; i < ARRAYSIZE_UNSAFE(kNPNStatusMapping) - 1; i++) {
if (kNPNStatusMapping[i].npn_status == npn_status)
return kNPNStatusMapping[i].proto_status;
}
return kNPNStatusMapping[ARRAYSIZE_UNSAFE(kNPNStatusMapping)-1].proto_status;
}
const SSLHostInfo::State& SSLHostInfo::state() const {
return state_;
}
SSLHostInfo::State* SSLHostInfo::mutable_state() {
return &state_;
}
bool SSLHostInfo::Parse(const std::string& data) {
SSLHostInfoProto proto;
State* state = mutable_state();
state->certs.clear();
state->server_hello.clear();
state->npn_valid = false;
cert_valid_ = false;
if (!proto.ParseFromString(data))
return false;
for (int i = 0; i < proto.certificate_der_size(); i++)
state->certs.push_back(proto.certificate_der(i));
if (proto.has_server_hello())
state->server_hello = proto.server_hello();
if (proto.has_npn_status() && proto.has_npn_protocol()) {
state->npn_valid = true;
state->npn_status = NPNStatusFromProtoStatus(proto.npn_status());
state->npn_protocol = proto.npn_protocol();
}
if (state->certs.size() > 0) {
std::vector<base::StringPiece> der_certs(state->certs.size());
for (size_t i = 0; i < state->certs.size(); i++)
der_certs[i] = state->certs[i];
cert_ = X509Certificate::CreateFromDERCertChain(der_certs);
if (cert_.get()) {
int flags = 0;
if (verify_ev_cert_)
flags |= X509Certificate::VERIFY_EV_CERT;
if (rev_checking_enabled_)
flags |= X509Certificate::VERIFY_REV_CHECKING_ENABLED;
verifier_.reset(new CertVerifier);
VLOG(1) << "Kicking off validation for " << hostname_;
if (verifier_->Verify(cert_.get(), hostname_, flags,
&cert_verify_result_, callback_) == OK) {
cert_valid_ = true;
}
}
}
return true;
}
std::string SSLHostInfo::Serialize() const {
SSLHostInfoProto proto;
for (std::vector<std::string>::const_iterator
i = state_.certs.begin(); i != state_.certs.end(); i++) {
proto.add_certificate_der(*i);
}
if (!state_.server_hello.empty())
proto.set_server_hello(state_.server_hello);
if (state_.npn_valid) {
proto.set_npn_status(ProtoStatusFromNPNStatus(state_.npn_status));
proto.set_npn_protocol(state_.npn_protocol);
}
return proto.SerializeAsString();
}
bool SSLHostInfo::cert_valid() const {
return cert_valid_;
}
const CertVerifyResult& SSLHostInfo::cert_verify_result() const {
return cert_verify_result_;
}
void SSLHostInfo::VerifyCallback(int rv) {
cert_valid_ = rv == OK;
}
SSLHostInfoFactory::~SSLHostInfoFactory() {}
} // namespace net
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