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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/http/http_stream_factory.h"
#include "base/logging.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/strings/string_util.h"
#include "base/time/time.h"
#include "net/base/host_mapping_rules.h"
#include "net/base/host_port_pair.h"
#include "net/base/port_util.h"
#include "net/http/http_network_session.h"
#include "net/quic/quic_protocol.h"
#include "net/spdy/spdy_alt_svc_wire_format.h"
#include "url/gurl.h"
namespace net {
// WARNING: If you modify or add any static flags, you must keep them in sync
// with |ResetStaticSettingsToInit|. This is critical for unit test isolation.
// static
bool HttpStreamFactory::spdy_enabled_ = true;
HttpStreamFactory::~HttpStreamFactory() {}
// static
void HttpStreamFactory::ResetStaticSettingsToInit() {
spdy_enabled_ = true;
}
void HttpStreamFactory::ProcessAlternativeService(
const base::WeakPtr<HttpServerProperties>& http_server_properties,
base::StringPiece alternative_service_str,
const HostPortPair& http_host_port_pair,
const HttpNetworkSession& session) {
SpdyAltSvcWireFormat::AlternativeServiceVector alternative_service_vector;
if (!SpdyAltSvcWireFormat::ParseHeaderFieldValue(
alternative_service_str, &alternative_service_vector)) {
return;
}
// Convert SpdyAltSvcWireFormat::AlternativeService entries
// to net::AlternativeServiceInfo.
AlternativeServiceInfoVector alternative_service_info_vector;
for (const SpdyAltSvcWireFormat::AlternativeService&
alternative_service_entry : alternative_service_vector) {
AlternateProtocol protocol =
AlternateProtocolFromString(alternative_service_entry.protocol_id);
if (!IsAlternateProtocolValid(protocol) ||
!session.IsProtocolEnabled(protocol) ||
!IsPortValid(alternative_service_entry.port)) {
continue;
}
// Check if QUIC version is supported.
if (protocol == QUIC && !alternative_service_entry.version.empty()) {
bool match_found = false;
for (QuicVersion supported : session.params().quic_supported_versions) {
for (uint16_t advertised : alternative_service_entry.version) {
if (supported == advertised) {
match_found = true;
break;
}
}
if (match_found) {
break;
}
}
if (!match_found) {
continue;
}
}
AlternativeService alternative_service(protocol,
alternative_service_entry.host,
alternative_service_entry.port);
base::Time expiration =
base::Time::Now() +
base::TimeDelta::FromSeconds(alternative_service_entry.max_age);
AlternativeServiceInfo alternative_service_info(alternative_service,
expiration);
alternative_service_info_vector.push_back(alternative_service_info);
}
http_server_properties->SetAlternativeServices(
RewriteHost(http_host_port_pair), alternative_service_info_vector);
}
void HttpStreamFactory::ProcessAlternateProtocol(
const base::WeakPtr<HttpServerProperties>& http_server_properties,
const std::vector<std::string>& alternate_protocol_values,
const HostPortPair& http_host_port_pair,
const HttpNetworkSession& session) {
AlternateProtocol protocol = UNINITIALIZED_ALTERNATE_PROTOCOL;
int port = 0;
bool is_valid = true;
for (size_t i = 0; i < alternate_protocol_values.size(); ++i) {
base::StringPiece alternate_protocol_str = alternate_protocol_values[i];
if (base::StartsWith(alternate_protocol_str, "p=",
base::CompareCase::SENSITIVE)) {
// Ignore deprecated probability.
continue;
}
std::vector<base::StringPiece> port_protocol_vector =
base::SplitStringPiece(alternate_protocol_str, ":",
base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
if (port_protocol_vector.size() != 2) {
DVLOG(1) << kAlternateProtocolHeader
<< " header has too many tokens: "
<< alternate_protocol_str;
is_valid = false;
break;
}
if (!base::StringToInt(port_protocol_vector[0], &port) ||
port == 0 || !IsPortValid(port)) {
DVLOG(1) << kAlternateProtocolHeader
<< " header has unrecognizable port: "
<< port_protocol_vector[0];
is_valid = false;
break;
}
protocol = AlternateProtocolFromString(port_protocol_vector[1].as_string());
if (IsAlternateProtocolValid(protocol) &&
!session.IsProtocolEnabled(protocol)) {
DVLOG(1) << kAlternateProtocolHeader
<< " header has unrecognized protocol: "
<< port_protocol_vector[1];
is_valid = false;
break;
}
}
if (!is_valid || protocol == UNINITIALIZED_ALTERNATE_PROTOCOL) {
http_server_properties->ClearAlternativeServices(http_host_port_pair);
return;
}
http_server_properties->SetAlternativeService(
RewriteHost(http_host_port_pair),
AlternativeService(protocol, "", static_cast<uint16_t>(port)),
base::Time::Now() + base::TimeDelta::FromDays(30));
}
GURL HttpStreamFactory::ApplyHostMappingRules(const GURL& url,
HostPortPair* endpoint) {
const HostMappingRules* mapping_rules = GetHostMappingRules();
if (mapping_rules && mapping_rules->RewriteHost(endpoint)) {
url::Replacements<char> replacements;
const std::string port_str = base::UintToString(endpoint->port());
replacements.SetPort(port_str.c_str(), url::Component(0, port_str.size()));
replacements.SetHost(endpoint->host().c_str(),
url::Component(0, endpoint->host().size()));
return url.ReplaceComponents(replacements);
}
return url;
}
HttpStreamFactory::HttpStreamFactory() {}
HostPortPair HttpStreamFactory::RewriteHost(HostPortPair host_port_pair) {
const HostMappingRules* mapping_rules = GetHostMappingRules();
if (mapping_rules)
mapping_rules->RewriteHost(&host_port_pair);
return host_port_pair;
}
} // namespace net
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