jochen
be92762969
The live tests reached one shared bus and assert, read and remove the mesh's own objects by their fixed names, so packages run in parallel deleted what each other read and the suite passed only one package at a time; a red suite read as noise. internal/testbus starts a server per test, linked in at the nats-server release go.mod pins, and a test holds that pin to the catalogue's bus image and to the facts snapshot's bus when there is one, so the tests never run a bus the mesh does not. The waiter test read a timing (the most connections held at one look) and now reads the state it means (the fewest held across the wait). make check runs the packages in parallel under the race detector, with a timeout.
85 lines
2.6 KiB
Go
85 lines
2.6 KiB
Go
// Copyright (c) 2018, Google LLC All rights reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package tpmutil
|
|
|
|
import (
|
|
"io"
|
|
|
|
"github.com/google/go-tpm/tpmutil/tbs"
|
|
)
|
|
|
|
// winTPMBuffer is a ReadWriteCloser to access the TPM in Windows.
|
|
type winTPMBuffer struct {
|
|
context tbs.Context
|
|
outBuffer []byte
|
|
}
|
|
|
|
// Executes the TPM command specified by commandBuffer (at Normal Priority), returning the number
|
|
// of bytes in the command and any error code returned by executing the TPM command. Command
|
|
// response can be read by calling Read().
|
|
func (rwc *winTPMBuffer) Write(commandBuffer []byte) (int, error) {
|
|
// TPM spec defines longest possible response to be maxTPMResponse.
|
|
rwc.outBuffer = rwc.outBuffer[:maxTPMResponse]
|
|
|
|
outBufferLen, err := rwc.context.SubmitCommand(
|
|
tbs.NormalPriority,
|
|
commandBuffer,
|
|
rwc.outBuffer,
|
|
)
|
|
|
|
if err != nil {
|
|
rwc.outBuffer = rwc.outBuffer[:0]
|
|
return 0, err
|
|
}
|
|
// Shrink outBuffer so it is length of response.
|
|
rwc.outBuffer = rwc.outBuffer[:outBufferLen]
|
|
return len(commandBuffer), nil
|
|
}
|
|
|
|
// Provides TPM response from the command called in the last Write call.
|
|
func (rwc *winTPMBuffer) Read(responseBuffer []byte) (int, error) {
|
|
if len(rwc.outBuffer) == 0 {
|
|
return 0, io.EOF
|
|
}
|
|
lenCopied := copy(responseBuffer, rwc.outBuffer)
|
|
// Cut out the piece of slice which was just read out, maintaining original slice capacity.
|
|
rwc.outBuffer = append(rwc.outBuffer[:0], rwc.outBuffer[lenCopied:]...)
|
|
return lenCopied, nil
|
|
}
|
|
|
|
func (rwc *winTPMBuffer) Close() error {
|
|
return rwc.context.Close()
|
|
}
|
|
|
|
// OpenTPM creates a new instance of a ReadWriteCloser which can interact with a
|
|
// Windows TPM.
|
|
func OpenTPM() (io.ReadWriteCloser, error) {
|
|
tpmContext, err := tbs.CreateContext(tbs.TPMVersion20, tbs.IncludeTPM12|tbs.IncludeTPM20)
|
|
rwc := &winTPMBuffer{
|
|
context: tpmContext,
|
|
outBuffer: make([]byte, 0, maxTPMResponse),
|
|
}
|
|
return rwc, err
|
|
}
|
|
|
|
// FromContext creates a new instance of a ReadWriteCloser which can
|
|
// interact with a Windows TPM, using the specified TBS handle.
|
|
func FromContext(ctx tbs.Context) io.ReadWriteCloser {
|
|
return &winTPMBuffer{
|
|
context: ctx,
|
|
outBuffer: make([]byte, 0, maxTPMResponse),
|
|
}
|
|
}
|