remoting/protocol/third_party_authenticator_base.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "remoting/protocol/third_party_authenticator_base.h"
   6
   7 #include "base/base64.h"
   8 #include "base/bind.h"
   9 #include "base/callback.h"
  10 #include "base/logging.h"
  11 #include "remoting/base/constants.h"
  12 #include "remoting/base/rsa_key_pair.h"
  13 #include "remoting/protocol/channel_authenticator.h"
  14 #include "remoting/protocol/v2_authenticator.h"
  15 #include "third_party/webrtc/libjingle/xmllite/xmlelement.h"
  16
  17 namespace remoting {
  18 namespace protocol {
  19
  20 // static
  21 const buzz::StaticQName ThirdPartyAuthenticatorBase::kTokenUrlTag =
  22     { remoting::kChromotingXmlNamespace, "third-party-token-url" };
  23 const buzz::StaticQName ThirdPartyAuthenticatorBase::kTokenScopeTag =
  24     { remoting::kChromotingXmlNamespace, "third-party-token-scope" };
  25 const buzz::StaticQName ThirdPartyAuthenticatorBase::kTokenTag =
  26     { remoting::kChromotingXmlNamespace, "third-party-token" };
  27
  28 ThirdPartyAuthenticatorBase::ThirdPartyAuthenticatorBase(
  29     Authenticator::State initial_state)
  30     : token_state_(initial_state),
  31       started_(false),
  32       rejection_reason_(INVALID_CREDENTIALS) {
  33 }
  34
  35 ThirdPartyAuthenticatorBase::~ThirdPartyAuthenticatorBase() {
  36 }
  37
  38 bool ThirdPartyAuthenticatorBase::started() const {
  39   return started_;
  40 }
  41
  42 Authenticator::State ThirdPartyAuthenticatorBase::state() const {
  43   if (token_state_ == ACCEPTED)
  44     return underlying_->state();
  45   return token_state_;
  46 }
  47
  48 Authenticator::RejectionReason
  49 ThirdPartyAuthenticatorBase::rejection_reason() const {
  50   DCHECK_EQ(state(), REJECTED);
  51
  52   if (token_state_ == REJECTED)
  53     return rejection_reason_;
  54   return underlying_->rejection_reason();
  55 }
  56
  57 void ThirdPartyAuthenticatorBase::ProcessMessage(
  58     const buzz::XmlElement* message,
  59     const base::Closure& resume_callback) {
  60   DCHECK_EQ(state(), WAITING_MESSAGE);
  61
  62   if (token_state_ == WAITING_MESSAGE) {
  63     ProcessTokenMessage(message, resume_callback);
  64   } else {
  65     DCHECK_EQ(token_state_, ACCEPTED);
  66     DCHECK(underlying_);
  67     DCHECK_EQ(underlying_->state(), WAITING_MESSAGE);
  68     underlying_->ProcessMessage(message, resume_callback);
  69   }
  70 }
  71
  72 scoped_ptr<buzz::XmlElement> ThirdPartyAuthenticatorBase::GetNextMessage() {
  73   DCHECK_EQ(state(), MESSAGE_READY);
  74
  75   scoped_ptr<buzz::XmlElement> message;
  76   if (underlying_ && underlying_->state() == MESSAGE_READY) {
  77     message = underlying_->GetNextMessage().Pass();
  78   } else {
  79     message = CreateEmptyAuthenticatorMessage();
  80   }
  81
  82   if (token_state_ == MESSAGE_READY) {
  83     AddTokenElements(message.get());
  84     started_ = true;
  85   }
  86   return message.Pass();
  87 }
  88
  89 scoped_ptr<ChannelAuthenticator>
  90 ThirdPartyAuthenticatorBase::CreateChannelAuthenticator() const {
  91   DCHECK_EQ(state(), ACCEPTED);
  92
  93   return underlying_->CreateChannelAuthenticator();
  94 }
  95
  96 }  // namespace protocol
  97 }  // namespace remoting