mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-18 19:10:21 +00:00
142 lines
3.8 KiB
Go
142 lines
3.8 KiB
Go
/*
|
|
*
|
|
* Copyright 2018 gRPC authors.
|
|
*
|
|
* 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 alts
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"log"
|
|
"os"
|
|
"os/exec"
|
|
"regexp"
|
|
"runtime"
|
|
"strings"
|
|
|
|
"golang.org/x/net/context"
|
|
"google.golang.org/grpc/peer"
|
|
)
|
|
|
|
const (
|
|
linuxProductNameFile = "/sys/class/dmi/id/product_name"
|
|
windowsCheckCommand = "powershell.exe"
|
|
windowsCheckCommandArgs = "Get-WmiObject -Class Win32_BIOS"
|
|
powershellOutputFilter = "Manufacturer"
|
|
windowsManufacturerRegex = ":(.*)"
|
|
)
|
|
|
|
type platformError string
|
|
|
|
func (k platformError) Error() string {
|
|
return fmt.Sprintf("%s is not supported", string(k))
|
|
}
|
|
|
|
var (
|
|
// The following two variables will be reassigned in tests.
|
|
runningOS = runtime.GOOS
|
|
manufacturerReader = func() (io.Reader, error) {
|
|
switch runningOS {
|
|
case "linux":
|
|
return os.Open(linuxProductNameFile)
|
|
case "windows":
|
|
cmd := exec.Command(windowsCheckCommand, windowsCheckCommandArgs)
|
|
out, err := cmd.Output()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for _, line := range strings.Split(strings.TrimSuffix(string(out), "\n"), "\n") {
|
|
if strings.HasPrefix(line, powershellOutputFilter) {
|
|
re := regexp.MustCompile(windowsManufacturerRegex)
|
|
name := re.FindString(line)
|
|
name = strings.TrimLeft(name, ":")
|
|
return strings.NewReader(name), nil
|
|
}
|
|
}
|
|
|
|
return nil, errors.New("cannot determine the machine's manufacturer")
|
|
default:
|
|
return nil, platformError(runningOS)
|
|
}
|
|
}
|
|
vmOnGCP bool
|
|
)
|
|
|
|
// isRunningOnGCP checks whether the local system, without doing a network request is
|
|
// running on GCP.
|
|
func isRunningOnGCP() bool {
|
|
manufacturer, err := readManufacturer()
|
|
if err != nil {
|
|
log.Fatalf("failure to read manufacturer information: %v", err)
|
|
}
|
|
name := string(manufacturer)
|
|
switch runningOS {
|
|
case "linux":
|
|
name = strings.TrimSpace(name)
|
|
return name == "Google" || name == "Google Compute Engine"
|
|
case "windows":
|
|
name = strings.Replace(name, " ", "", -1)
|
|
name = strings.Replace(name, "\n", "", -1)
|
|
name = strings.Replace(name, "\r", "", -1)
|
|
return name == "Google"
|
|
default:
|
|
log.Fatal(platformError(runningOS))
|
|
}
|
|
return false
|
|
}
|
|
|
|
func readManufacturer() ([]byte, error) {
|
|
reader, err := manufacturerReader()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if reader == nil {
|
|
return nil, errors.New("got nil reader")
|
|
}
|
|
manufacturer, err := ioutil.ReadAll(reader)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("failed reading %v: %v", linuxProductNameFile, err)
|
|
}
|
|
return manufacturer, nil
|
|
}
|
|
|
|
// AuthInfoFromContext extracts the alts.AuthInfo object from the given context,
|
|
// if it exists. This API should be used by gRPC server RPC handlers to get
|
|
// information about the communicating peer. For client-side, use grpc.Peer()
|
|
// CallOption.
|
|
func AuthInfoFromContext(ctx context.Context) (AuthInfo, error) {
|
|
p, ok := peer.FromContext(ctx)
|
|
if !ok {
|
|
return nil, errors.New("no Peer found in Context")
|
|
}
|
|
return AuthInfoFromPeer(p)
|
|
}
|
|
|
|
// AuthInfoFromPeer extracts the alts.AuthInfo object from the given peer, if it
|
|
// exists. This API should be used by gRPC clients after obtaining a peer object
|
|
// using the grpc.Peer() CallOption.
|
|
func AuthInfoFromPeer(p *peer.Peer) (AuthInfo, error) {
|
|
altsAuthInfo, ok := p.AuthInfo.(AuthInfo)
|
|
if !ok {
|
|
return nil, errors.New("no alts.AuthInfo found in Peer")
|
|
}
|
|
return altsAuthInfo, nil
|
|
}
|