| // 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. |
| |
| #ifndef REMOTING_PROTOCOL_THIRD_PARTY_CLIENT_AUTHENTICATOR_H_ |
| #define REMOTING_PROTOCOL_THIRD_PARTY_CLIENT_AUTHENTICATOR_H_ |
| |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "remoting/protocol/third_party_authenticator_base.h" |
| #include "url/gurl.h" |
| |
| class GURL; |
| |
| namespace remoting { |
| namespace protocol { |
| |
| // Implements the client side of the third party authentication mechanism. |
| // The client authenticator expects a |token_url| and |scope| in the first |
| // message from the host, then calls the |TokenFetcher| asynchronously to |
| // request a |token| and |shared_secret| from that url. If the server requires |
| // interactive authentication, the |TokenFetcher| implementation will show the |
| // appropriate UI. Once the |TokenFetcher| returns, the client sends the |token| |
| // to the host, and uses the |shared_secret| to create an underlying |
| // |V2Authenticator|, which is used to establish the encrypted connection. |
| class ThirdPartyClientAuthenticator : public ThirdPartyAuthenticatorBase { |
| public: |
| class TokenFetcher { |
| public: |
| // Callback passed to |FetchThirdPartyToken|, and called once the client |
| // authentication finishes. |token| is an opaque string that should be sent |
| // directly to the host. |shared_secret| should be used by the client to |
| // create a V2Authenticator. In case of failure, the callback is called with |
| // an empty |token| and |shared_secret|. |
| typedef base::Callback<void( |
| const std::string& token, |
| const std::string& shared_secret)> TokenFetchedCallback; |
| |
| virtual ~TokenFetcher() {} |
| |
| // Fetches a third party token from |token_url|. |host_public_key| is sent |
| // to the server so it can later authenticate the host. |scope| is a string |
| // with a space-separated list of attributes for this connection (e.g. |
| // "hostjid:abc@example.com/123 clientjid:def@example.org/456". |
| // |token_fetched_callback| is called when the client authentication ends, |
| // in the same thread |FetchThirdPartyToken| was originally called. |
| // The request is canceled if the TokenFetcher is destroyed. |
| virtual void FetchThirdPartyToken( |
| const GURL& token_url, |
| const std::string& scope, |
| const TokenFetchedCallback& token_fetched_callback) = 0; |
| }; |
| |
| // Creates a third-party client authenticator for the host with the given |
| // |host_public_key|. |token_fetcher| is used to get the authentication token. |
| explicit ThirdPartyClientAuthenticator( |
| scoped_ptr<TokenFetcher> token_fetcher); |
| virtual ~ThirdPartyClientAuthenticator(); |
| |
| protected: |
| // ThirdPartyAuthenticator implementation. |
| virtual void ProcessTokenMessage( |
| const buzz::XmlElement* message, |
| const base::Closure& resume_callback) OVERRIDE; |
| virtual void AddTokenElements(buzz::XmlElement* message) OVERRIDE; |
| |
| private: |
| void OnThirdPartyTokenFetched(const base::Closure& resume_callback, |
| const std::string& third_party_token, |
| const std::string& shared_secret); |
| |
| std::string token_; |
| scoped_ptr<TokenFetcher> token_fetcher_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ThirdPartyClientAuthenticator); |
| }; |
| |
| |
| } // namespace protocol |
| } // namespace remoting |
| |
| #endif // REMOTING_PROTOCOL_THIRD_PARTY_CLIENT_AUTHENTICATOR_H_ |