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// Copyright (c) 2012 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_client_socket.h"
#include "base/metrics/histogram.h"
#include "base/strings/string_util.h"
#include "crypto/ec_private_key.h"
#include "net/ssl/server_bound_cert_service.h"
#include "net/ssl/ssl_config_service.h"
namespace net {
SSLClientSocket::SSLClientSocket()
: was_npn_negotiated_(false),
was_spdy_negotiated_(false),
protocol_negotiated_(kProtoUnknown),
channel_id_sent_(false),
signed_cert_timestamps_received_(false),
stapled_ocsp_response_received_(false) {
}
// static
NextProto SSLClientSocket::NextProtoFromString(
const std::string& proto_string) {
if (proto_string == "http1.1" || proto_string == "http/1.1") {
return kProtoHTTP11;
} else if (proto_string == "spdy/2") {
return kProtoDeprecatedSPDY2;
} else if (proto_string == "spdy/3") {
return kProtoSPDY3;
} else if (proto_string == "spdy/3.1") {
return kProtoSPDY31;
} else if (proto_string == "spdy/4a2") {
return kProtoSPDY4a2;
} else if (proto_string == "HTTP-draft-04/2.0") {
return kProtoHTTP2Draft04;
} else if (proto_string == "quic/1+spdy/3") {
return kProtoQUIC1SPDY3;
} else {
return kProtoUnknown;
}
}
// static
const char* SSLClientSocket::NextProtoToString(NextProto next_proto) {
switch (next_proto) {
case kProtoHTTP11:
return "http/1.1";
case kProtoDeprecatedSPDY2:
return "spdy/2";
case kProtoSPDY3:
return "spdy/3";
case kProtoSPDY31:
return "spdy/3.1";
case kProtoSPDY4a2:
return "spdy/4a2";
case kProtoHTTP2Draft04:
return "HTTP-draft-04/2.0";
case kProtoQUIC1SPDY3:
return "quic/1+spdy/3";
case kProtoUnknown:
break;
}
return "unknown";
}
// static
const char* SSLClientSocket::NextProtoStatusToString(
const SSLClientSocket::NextProtoStatus status) {
switch (status) {
case kNextProtoUnsupported:
return "unsupported";
case kNextProtoNegotiated:
return "negotiated";
case kNextProtoNoOverlap:
return "no-overlap";
}
return NULL;
}
// static
std::string SSLClientSocket::ServerProtosToString(
const std::string& server_protos) {
const char* protos = server_protos.c_str();
size_t protos_len = server_protos.length();
std::vector<std::string> server_protos_with_commas;
for (size_t i = 0; i < protos_len; ) {
const size_t len = protos[i];
std::string proto_str(&protos[i + 1], len);
server_protos_with_commas.push_back(proto_str);
i += len + 1;
}
return JoinString(server_protos_with_commas, ',');
}
bool SSLClientSocket::WasNpnNegotiated() const {
return was_npn_negotiated_;
}
NextProto SSLClientSocket::GetNegotiatedProtocol() const {
return protocol_negotiated_;
}
bool SSLClientSocket::IgnoreCertError(int error, int load_flags) {
if (error == OK || load_flags & LOAD_IGNORE_ALL_CERT_ERRORS)
return true;
if (error == ERR_CERT_COMMON_NAME_INVALID &&
(load_flags & LOAD_IGNORE_CERT_COMMON_NAME_INVALID))
return true;
if (error == ERR_CERT_DATE_INVALID &&
(load_flags & LOAD_IGNORE_CERT_DATE_INVALID))
return true;
if (error == ERR_CERT_AUTHORITY_INVALID &&
(load_flags & LOAD_IGNORE_CERT_AUTHORITY_INVALID))
return true;
return false;
}
bool SSLClientSocket::set_was_npn_negotiated(bool negotiated) {
return was_npn_negotiated_ = negotiated;
}
bool SSLClientSocket::was_spdy_negotiated() const {
return was_spdy_negotiated_;
}
bool SSLClientSocket::set_was_spdy_negotiated(bool negotiated) {
return was_spdy_negotiated_ = negotiated;
}
void SSLClientSocket::set_protocol_negotiated(NextProto protocol_negotiated) {
protocol_negotiated_ = protocol_negotiated;
}
bool SSLClientSocket::WasChannelIDSent() const {
return channel_id_sent_;
}
void SSLClientSocket::set_channel_id_sent(bool channel_id_sent) {
channel_id_sent_ = channel_id_sent;
}
void SSLClientSocket::set_signed_cert_timestamps_received(
bool signed_cert_timestamps_received) {
signed_cert_timestamps_received_ = signed_cert_timestamps_received;
}
void SSLClientSocket::set_stapled_ocsp_response_received(
bool stapled_ocsp_response_received) {
stapled_ocsp_response_received_ = stapled_ocsp_response_received;
}
// static
void SSLClientSocket::RecordChannelIDSupport(
ServerBoundCertService* server_bound_cert_service,
bool negotiated_channel_id,
bool channel_id_enabled,
bool supports_ecc) {
// Since this enum is used for a histogram, do not change or re-use values.
enum {
DISABLED = 0,
CLIENT_ONLY = 1,
CLIENT_AND_SERVER = 2,
CLIENT_NO_ECC = 3,
CLIENT_BAD_SYSTEM_TIME = 4,
CLIENT_NO_SERVER_BOUND_CERT_SERVICE = 5,
DOMAIN_BOUND_CERT_USAGE_MAX
} supported = DISABLED;
if (negotiated_channel_id) {
supported = CLIENT_AND_SERVER;
} else if (channel_id_enabled) {
if (!server_bound_cert_service)
supported = CLIENT_NO_SERVER_BOUND_CERT_SERVICE;
else if (!supports_ecc)
supported = CLIENT_NO_ECC;
else if (!server_bound_cert_service->IsSystemTimeValid())
supported = CLIENT_BAD_SYSTEM_TIME;
else
supported = CLIENT_ONLY;
}
UMA_HISTOGRAM_ENUMERATION("DomainBoundCerts.Support", supported,
DOMAIN_BOUND_CERT_USAGE_MAX);
}
// static
bool SSLClientSocket::IsChannelIDEnabled(
const SSLConfig& ssl_config,
ServerBoundCertService* server_bound_cert_service) {
if (!ssl_config.channel_id_enabled)
return false;
if (!server_bound_cert_service) {
DVLOG(1) << "NULL server_bound_cert_service_, not enabling channel ID.";
return false;
}
if (!crypto::ECPrivateKey::IsSupported()) {
DVLOG(1) << "Elliptic Curve not supported, not enabling channel ID.";
return false;
}
if (!server_bound_cert_service->IsSystemTimeValid()) {
DVLOG(1) << "System time is not within the supported range for certificate "
"generation, not enabling channel ID.";
return false;
}
return true;
}
} // namespace net
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