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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/quic/quic_server_info.h"
#include <limits>
#include "base/containers/span.h"
#include "base/logging.h"
#include "base/pickle.h"
#include "base/stl_util.h"
using std::string;
namespace {
const int kQuicCryptoConfigVersion = 2;
} // namespace
namespace net {
QuicServerInfo::State::State() = default;
QuicServerInfo::State::~State() = default;
void QuicServerInfo::State::Clear() {
base::STLClearObject(&server_config);
base::STLClearObject(&source_address_token);
base::STLClearObject(&cert_sct);
base::STLClearObject(&chlo_hash);
base::STLClearObject(&server_config_sig);
base::STLClearObject(&certs);
}
QuicServerInfo::QuicServerInfo(const quic::QuicServerId& server_id)
: server_id_(server_id) {}
QuicServerInfo::~QuicServerInfo() = default;
const QuicServerInfo::State& QuicServerInfo::state() const {
return state_;
}
QuicServerInfo::State* QuicServerInfo::mutable_state() {
return &state_;
}
bool QuicServerInfo::Parse(const string& data) {
State* state = mutable_state();
state->Clear();
bool r = ParseInner(data);
if (!r)
state->Clear();
return r;
}
bool QuicServerInfo::ParseInner(const string& data) {
State* state = mutable_state();
// No data was read from the disk cache.
if (data.empty()) {
return false;
}
base::Pickle pickle =
base::Pickle::WithUnownedBuffer(base::as_byte_span(data));
base::PickleIterator iter(pickle);
int version = -1;
if (!iter.ReadInt(&version)) {
DVLOG(1) << "Missing version";
return false;
}
if (version != kQuicCryptoConfigVersion) {
DVLOG(1) << "Unsupported version";
return false;
}
if (!iter.ReadString(&state->server_config)) {
DVLOG(1) << "Malformed server_config";
return false;
}
if (!iter.ReadString(&state->source_address_token)) {
DVLOG(1) << "Malformed source_address_token";
return false;
}
if (!iter.ReadString(&state->cert_sct)) {
DVLOG(1) << "Malformed cert_sct";
return false;
}
if (!iter.ReadString(&state->chlo_hash)) {
DVLOG(1) << "Malformed chlo_hash";
return false;
}
if (!iter.ReadString(&state->server_config_sig)) {
DVLOG(1) << "Malformed server_config_sig";
return false;
}
// Read certs.
uint32_t num_certs;
if (!iter.ReadUInt32(&num_certs)) {
DVLOG(1) << "Malformed num_certs";
return false;
}
for (uint32_t i = 0; i < num_certs; i++) {
string cert;
if (!iter.ReadString(&cert)) {
DVLOG(1) << "Malformed cert";
return false;
}
state->certs.push_back(cert);
}
return true;
}
string QuicServerInfo::Serialize() {
string pickled_data = SerializeInner();
state_.Clear();
return pickled_data;
}
string QuicServerInfo::SerializeInner() const {
if (state_.certs.size() > std::numeric_limits<uint32_t>::max())
return std::string();
base::Pickle p;
p.WriteInt(kQuicCryptoConfigVersion);
p.WriteString(state_.server_config);
p.WriteString(state_.source_address_token);
p.WriteString(state_.cert_sct);
p.WriteString(state_.chlo_hash);
p.WriteString(state_.server_config_sig);
p.WriteUInt32(state_.certs.size());
for (const auto& cert : state_.certs)
p.WriteString(cert);
return string(reinterpret_cast<const char*>(p.data()), p.size());
}
} // namespace net
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