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// Copyright 2013 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 "remoting/protocol/pairing_registry.h"
#include "base/base64.h"
#include "base/bind.h"
#include "base/guid.h"
#include "crypto/random.h"
namespace remoting {
namespace protocol {
// How many bytes of random data to use for the client id and shared secret.
const int kKeySize = 16;
PairingRegistry::PairingRegistry(scoped_ptr<Delegate> delegate,
const PairedClients& paired_clients)
: delegate_(delegate.Pass()) {
DCHECK(delegate_);
paired_clients_ = paired_clients;
}
PairingRegistry::~PairingRegistry() {
}
const PairingRegistry::Pairing& PairingRegistry::CreatePairing(
const std::string& client_name) {
DCHECK(CalledOnValidThread());
Pairing result;
result.client_name = client_name;
result.client_id = base::GenerateGUID();
// Create a random shared secret to authenticate this client.
char buffer[kKeySize];
crypto::RandBytes(buffer, arraysize(buffer));
result.shared_secret = std::string(buffer, buffer+arraysize(buffer));
// Save the result via the Delegate and return it to the caller.
paired_clients_[result.client_id] = result;
delegate_->Save(paired_clients_);
return paired_clients_[result.client_id];
}
std::string PairingRegistry::GetSecret(const std::string& client_id) const {
DCHECK(CalledOnValidThread());
std::string result;
PairedClients::const_iterator i = paired_clients_.find(client_id);
if (i != paired_clients_.end()) {
result = i->second.shared_secret;
}
return result;
}
} // namespace protocol
} // namespace remoting
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