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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_host_authenticator.h"
#include "base/bind.h"
#include "base/logging.h"
#include "remoting/base/constants.h"
#include "remoting/protocol/channel_authenticator.h"
#include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
namespace remoting {
namespace protocol {
PairingHostAuthenticator::PairingHostAuthenticator(
scoped_refptr<PairingRegistry> pairing_registry,
const CreateBaseAuthenticatorCallback& create_base_authenticator_callback,
const std::string& pin)
: pairing_registry_(pairing_registry),
create_base_authenticator_callback_(create_base_authenticator_callback),
pin_(pin),
weak_factory_(this) {}
void PairingHostAuthenticator::Initialize(
const std::string& client_id,
Authenticator::State preferred_initial_state,
const base::Closure& resume_callback) {
DCHECK(!spake2_authenticator_);
if (client_id.empty()) {
using_paired_secret_ = false;
error_message_ = "client-id-unknown";
spake2_authenticator_ =
create_base_authenticator_callback_.Run(pin_, MESSAGE_READY);
resume_callback.Run();
return;
}
using_paired_secret_ = true;
waiting_for_paired_secret_ = true;
pairing_registry_->GetPairing(
client_id, base::Bind(&PairingHostAuthenticator::InitializeWithPairing,
weak_factory_.GetWeakPtr(), preferred_initial_state,
resume_callback));
}
PairingHostAuthenticator::~PairingHostAuthenticator() {}
Authenticator::State PairingHostAuthenticator::state() const {
if (protocol_error_) {
return REJECTED;
} else if (waiting_for_paired_secret_) {
return PROCESSING_MESSAGE;
}
return PairingAuthenticatorBase::state();
}
Authenticator::RejectionReason
PairingHostAuthenticator::rejection_reason() const {
if (protocol_error_) {
return PROTOCOL_ERROR;
}
return PairingAuthenticatorBase::rejection_reason();
}
void PairingHostAuthenticator::CreateSpakeAuthenticatorWithPin(
State initial_state,
const base::Closure& resume_callback) {
spake2_authenticator_ =
create_base_authenticator_callback_.Run(pin_, initial_state);
resume_callback.Run();
}
void PairingHostAuthenticator::InitializeWithPairing(
Authenticator::State preferred_initial_state,
const base::Closure& resume_callback,
PairingRegistry::Pairing pairing) {
DCHECK(waiting_for_paired_secret_);
waiting_for_paired_secret_ = false;
std::string pairing_secret = pairing.shared_secret();
if (pairing_secret.empty()) {
VLOG(0) << "Unknown client id";
error_message_ = "unknown-client-id";
using_paired_secret_ = false;
// If pairing wasn't found then always start in the MESSAGE_READY state.
spake2_authenticator_ =
create_base_authenticator_callback_.Run(pin_, MESSAGE_READY);
} else {
using_paired_secret_ = true;
spake2_authenticator_ = create_base_authenticator_callback_.Run(
pairing_secret, preferred_initial_state);
}
resume_callback.Run();
}
} // namespace protocol
} // namespace remoting
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