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53 lines
1.9 KiB
53 lines
1.9 KiB
// |
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// Copyright (C) 2014 The Android Open Source Project |
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// |
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// Licensed under the Apache License, Version 2.0 (the "License"); |
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// you may not use this file except in compliance with the License. |
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// You may obtain a copy of the License at |
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// |
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// http://www.apache.org/licenses/LICENSE-2.0 |
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// |
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// Unless required by applicable law or agreed to in writing, software |
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// distributed under the License is distributed on an "AS IS" BASIS, |
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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// See the License for the specific language governing permissions and |
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// limitations under the License. |
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// |
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#ifndef TRUNKS_COMMAND_TRANSCEIVER_H_ |
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#define TRUNKS_COMMAND_TRANSCEIVER_H_ |
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#include <string> |
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#include <base/callback_forward.h> |
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namespace trunks { |
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// CommandTransceiver is an interface that sends commands to a TPM device and |
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// receives responses. It can operate synchronously or asynchronously. |
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class CommandTransceiver { |
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public: |
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typedef base::Callback<void(const std::string& response)> ResponseCallback; |
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virtual ~CommandTransceiver() {} |
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// Sends a TPM |command| asynchronously. When a |response| is received, |
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// |callback| will be called with the |response| data from the TPM. If a |
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// transmission error occurs |callback| will be called with a well-formed |
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// error |response|. |
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virtual void SendCommand(const std::string& command, |
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const ResponseCallback& callback) = 0; |
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// Sends a TPM |command| synchronously (i.e. waits for a response) and returns |
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// the response. If a transmission error occurs the response will be populated |
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// with a well-formed error response. |
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virtual std::string SendCommandAndWait(const std::string& command) = 0; |
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// Initializes the actual interface, replaced by the derived classes, where |
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// needed. |
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virtual bool Init() { return true; } |
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}; |
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} // namespace trunks |
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#endif // TRUNKS_COMMAND_TRANSCEIVER_H_
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