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 #ifndef REMOTING_PROTOCOL_NEGOTIATING_CLIENT_AUTHENTICATOR_H_ 6 #define REMOTING_PROTOCOL_NEGOTIATING_CLIENT_AUTHENTICATOR_H_ 7 8 #include <memory> 9 #include <string> 10 #include <vector> 11 12 #include "base/macros.h" 13 #include "base/memory/weak_ptr.h" 14 #include "remoting/protocol/authenticator.h" 15 #include "remoting/protocol/client_authentication_config.h" 16 #include "remoting/protocol/negotiating_authenticator_base.h" 17 #include "remoting/protocol/third_party_client_authenticator.h" 18 19 namespace remoting { 20 namespace protocol { 21 22 // Client-side implementation of NegotiatingAuthenticatorBase. 23 // See comments in negotiating_authenticator_base.h for a general explanation. 24 class NegotiatingClientAuthenticator : public NegotiatingAuthenticatorBase { 25 public: 26 explicit NegotiatingClientAuthenticator( 27 const std::string& local_id, 28 const std::string& remote_id, 29 const ClientAuthenticationConfig& config); 30 ~NegotiatingClientAuthenticator() override; 31 32 // NegotiatingAuthenticatorBase: 33 void ProcessMessage(const jingle_xmpp::XmlElement* message, 34 base::OnceClosure resume_callback) override; 35 std::unique_ptr<jingle_xmpp::XmlElement> GetNextMessage() override; 36 37 private: 38 // (Asynchronously) creates an authenticator, and stores it in 39 // |current_authenticator_|. Authenticators that can be started in either 40 // state will be created in |preferred_initial_state|. 41 // |resume_callback| is called after |current_authenticator_| is set. 42 void CreateAuthenticatorForCurrentMethod( 43 Authenticator::State preferred_initial_state, 44 base::OnceClosure resume_callback); 45 46 // If possible, create a preferred authenticator ready to send an 47 // initial message optimistically to the host. The host is free to 48 // ignore the client's preferred authenticator and initial message 49 // and to instead reply with an alternative method. See the comments 50 // in negotiating_authenticator_base.h for more details. 51 // 52 // Sets |current_authenticator_| and |current_method_| iff the client 53 // has a preferred authenticator that can optimistically send an initial 54 // message. 55 void CreatePreferredAuthenticator(); 56 57 // Creates a shared-secret authenticator in state |initial_state| with the 58 // given |shared_secret|, then runs |resume_callback|. 59 void CreateSharedSecretAuthenticator(Authenticator::State initial_state, 60 base::OnceClosure resume_callback, 61 const std::string& shared_secret); 62 63 bool is_paired(); 64 65 std::string local_id_; 66 std::string remote_id_; 67 68 ClientAuthenticationConfig config_; 69 70 // Internal NegotiatingClientAuthenticator data. 71 bool method_set_by_host_ = false; 72 base::WeakPtrFactory<NegotiatingClientAuthenticator> weak_factory_{this}; 73 74 DISALLOW_COPY_AND_ASSIGN(NegotiatingClientAuthenticator); 75 }; 76 77 } // namespace protocol 78 } // namespace remoting 79 80 #endif // REMOTING_PROTOCOL_NEGOTIATING_CLIENT_AUTHENTICATOR_H_ 81