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update deps

This commit is contained in:
AJ ONeal 2020-05-27 03:57:03 -06:00
parent f2975c9a4d
commit 73106f4ef7
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
*.test
*.prof
.DS_Store
.vscode
result
/machineid

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The MIT License (MIT)
Copyright (c) 2017 Denis Brodbeck
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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# machineid provides support for reading the unique machine id of most host OS's (without admin privileges)
![Image of Gopher 47](logo.png)
… because sometimes you just need to reliably identify your machines.
[![GoDoc](https://godoc.org/github.com/denisbrodbeck/machineid?status.svg)](https://godoc.org/github.com/denisbrodbeck/machineid) [![Go Report Card](https://goreportcard.com/badge/github.com/denisbrodbeck/machineid)](https://goreportcard.com/report/github.com/denisbrodbeck/machineid)
## Main Features
* Cross-Platform (tested on Win7+, Debian 8+, Ubuntu 14.04+, OS X 10.6+, FreeBSD 11+)
* No admin privileges required
* Hardware independent (no usage of MAC, BIOS or CPU — those are too unreliable, especially in a VM environment)
* IDs are unique<sup>[1](#unique-key-reliability)</sup> to the installed OS
## Installation
Get the library with
```bash
go get github.com/denisbrodbeck/machineid
```
You can also add the cli app directly to your `$GOPATH/bin` with
```bash
go get github.com/denisbrodbeck/machineid/cmd/machineid
```
## Usage
```golang
package main
import (
"fmt"
"log"
"github.com/denisbrodbeck/machineid"
)
func main() {
id, err := machineid.ID()
if err != nil {
log.Fatal(err)
}
fmt.Println(id)
}
```
Or even better, use securely hashed machine IDs:
```golang
package main
import (
"fmt"
"log"
"github.com/denisbrodbeck/machineid"
)
func main() {
id, err := machineid.ProtectedID("myAppName")
if err != nil {
log.Fatal(err)
}
fmt.Println(id)
}
```
### Function: ID() (string, error)
Returns original machine id as a `string`.
### Function: ProtectedID(appID string) (string, error)
Returns hashed version of the machine ID as a `string`. The hash is generated in a cryptographically secure way, using a fixed, application-specific key (calculates HMAC-SHA256 of the app ID, keyed by the machine ID).
## What you get
This package returns the OS native machine UUID/GUID, which the OS uses for internal needs.
All machine IDs are usually generated during system installation and stay constant for all subsequent boots.
The following sources are used:
* **BSD** uses `/etc/hostid` and `smbios.system.uuid` as a fallback
* **Linux** uses `/var/lib/dbus/machine-id` ([man](http://man7.org/linux/man-pages/man5/machine-id.5.html))
* **OS X** uses `IOPlatformUUID`
* **Windows** uses the `MachineGuid` from `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`
## Unique Key Reliability
Do note, that `machine-id` and `MachineGuid` can be changed by root/admin, although that may not come without cost (broken system services and more).
Most IDs won't be regenerated by the OS, when you clone/image/restore a particular OS installation. This is a well known issue with cloned windows installs (not using the official sysprep tools).
**Linux** users can generate a new id with `dbus-uuidgen` and put the id into `/var/lib/dbus/machine-id` and `/etc/machine-id`.
**Windows** users can use the `sysprep` [toolchain](https://docs.microsoft.com/en-us/windows-hardware/manufacture/desktop/sysprep--generalize--a-windows-installation) to create images, which produce valid images ready for distribution. Such images produce a new unique machine ID on each deployment.
## Security Considerations
A machine ID uniquely identifies the host. Therefore it should be considered "confidential", and must not be exposed in untrusted environments. If you need a stable unique identifier for your app, do not use the machine ID directly.
> A reliable solution is to hash the machine ID in a cryptographically secure way, using a fixed, application-specific key.
That way the ID will be properly unique, and derived in a constant way from the machine ID but there will be no way to retrieve the original machine ID from the application-specific one.
Do something along these lines:
```golang
package main
import (
"crypto/hmac"
"crypto/sha256"
"fmt"
"github.com/denisbrodbeck/machineid"
)
const appKey = "WowSuchNiceApp"
func main() {
id, _ := machineid.ID()
fmt.Println(protect(appKey, id))
// Output: dbabdb7baa54845f9bec96e2e8a87be2d01794c66fdebac3df7edd857f3d9f97
}
func protect(appID, id string) string {
mac := hmac.New(sha256.New, []byte(id))
mac.Write([]byte(appID))
return fmt.Sprintf("%x", mac.Sum(nil))
}
```
Or simply use the convenience API call:
```golang
hashedID, err := machineid.ProtectedID("myAppName")
```
## Snippets
Don't want to download code, and just need a way to get the data by yourself?
BSD:
```bash
cat /etc/hostid
# or (might be empty)
kenv -q smbios.system.uuid
```
Linux:
```bash
cat /var/lib/dbus/machine-id
# or when not found (e.g. Fedora 20)
cat /etc/machine-id
```
OS X:
```bash
ioreg -rd1 -c IOPlatformExpertDevice | grep IOPlatformUUID
```
Windows:
```batch
reg query HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography /v MachineGuid
```
or
* Open Windows Registry via `regedit`
* Navigate to `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`
* Take value of key `MachineGuid`
## Credits
The Go gopher was created by [Denis Brodbeck](https://github.com/denisbrodbeck) with [gopherize.me](https://gopherize.me/), based on original artwork from [Renee French](http://reneefrench.blogspot.com/).
## License
The MIT License (MIT) — [Denis Brodbeck](https://github.com/denisbrodbeck). Please have a look at the [LICENSE.md](LICENSE.md) for more details.

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package machineid
import (
"crypto/hmac"
"crypto/sha256"
"encoding/hex"
"io"
"io/ioutil"
"os"
"os/exec"
"strings"
)
// run wraps `exec.Command` with easy access to stdout and stderr.
func run(stdout, stderr io.Writer, cmd string, args ...string) error {
c := exec.Command(cmd, args...)
c.Stdin = os.Stdin
c.Stdout = stdout
c.Stderr = stderr
return c.Run()
}
// protect calculates HMAC-SHA256 of the application ID, keyed by the machine ID and returns a hex-encoded string.
func protect(appID, id string) string {
mac := hmac.New(sha256.New, []byte(id))
mac.Write([]byte(appID))
return hex.EncodeToString(mac.Sum(nil))
}
func readFile(filename string) ([]byte, error) {
return ioutil.ReadFile(filename)
}
func trim(s string) string {
return strings.TrimSpace(strings.Trim(s, "\n"))
}

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// Package machineid provides support for reading the unique machine id of most OSs (without admin privileges).
//
// https://github.com/denisbrodbeck/machineid
//
// https://godoc.org/github.com/denisbrodbeck/machineid/cmd/machineid
//
// This package is Cross-Platform (tested on Win7+, Debian 8+, Ubuntu 14.04+, OS X 10.6+, FreeBSD 11+)
// and does not use any internal hardware IDs (no MAC, BIOS, or CPU).
//
// Returned machine IDs are generally stable for the OS installation
// and usually stay the same after updates or hardware changes.
//
// This package allows sharing of machine IDs in a secure way by
// calculating HMAC-SHA256 over a user provided app ID, which is keyed by the machine id.
//
// Caveat: Image-based environments have usually the same machine-id (perfect clone).
// Linux users can generate a new id with `dbus-uuidgen` and put the id into
// `/var/lib/dbus/machine-id` and `/etc/machine-id`.
// Windows users can use the `sysprep` toolchain to create images, which produce valid images ready for distribution.
package machineid // import "github.com/denisbrodbeck/machineid"
import (
"fmt"
)
// ID returns the platform specific machine id of the current host OS.
// Regard the returned id as "confidential" and consider using ProtectedID() instead.
func ID() (string, error) {
id, err := machineID()
if err != nil {
return "", fmt.Errorf("machineid: %v", err)
}
return id, nil
}
// ProtectedID returns a hashed version of the machine ID in a cryptographically secure way,
// using a fixed, application-specific key.
// Internally, this function calculates HMAC-SHA256 of the application ID, keyed by the machine ID.
func ProtectedID(appID string) (string, error) {
id, err := ID()
if err != nil {
return "", fmt.Errorf("machineid: %v", err)
}
return protect(appID, id), nil
}

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// +build freebsd netbsd openbsd dragonfly solaris
package machineid
import (
"bytes"
"os"
)
const hostidPath = "/etc/hostid"
// machineID returns the uuid specified at `/etc/hostid`.
// If the returned value is empty, the uuid from a call to `kenv -q smbios.system.uuid` is returned.
// If there is an error an empty string is returned.
func machineID() (string, error) {
id, err := readHostid()
if err != nil {
// try fallback
id, err = readKenv()
}
if err != nil {
return "", err
}
return id, nil
}
func readHostid() (string, error) {
buf, err := readFile(hostidPath)
if err != nil {
return "", err
}
return trim(string(buf)), nil
}
func readKenv() (string, error) {
buf := &bytes.Buffer{}
err := run(buf, os.Stderr, "kenv", "-q", "smbios.system.uuid")
if err != nil {
return "", err
}
return trim(buf.String()), nil
}

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// +build darwin
package machineid
import (
"bytes"
"fmt"
"os"
"strings"
)
// machineID returns the uuid returned by `ioreg -rd1 -c IOPlatformExpertDevice`.
// If there is an error running the commad an empty string is returned.
func machineID() (string, error) {
buf := &bytes.Buffer{}
err := run(buf, os.Stderr, "ioreg", "-rd1", "-c", "IOPlatformExpertDevice")
if err != nil {
return "", err
}
id, err := extractID(buf.String())
if err != nil {
return "", err
}
return trim(id), nil
}
func extractID(lines string) (string, error) {
for _, line := range strings.Split(lines, "\n") {
if strings.Contains(line, "IOPlatformUUID") {
parts := strings.SplitAfter(line, `" = "`)
if len(parts) == 2 {
return strings.TrimRight(parts[1], `"`), nil
}
}
}
return "", fmt.Errorf("Failed to extract 'IOPlatformUUID' value from `ioreg` output.\n%s", lines)
}

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// +build linux
package machineid
const (
// dbusPath is the default path for dbus machine id.
dbusPath = "/var/lib/dbus/machine-id"
// dbusPathEtc is the default path for dbus machine id located in /etc.
// Some systems (like Fedora 20) only know this path.
// Sometimes it's the other way round.
dbusPathEtc = "/etc/machine-id"
)
// machineID returns the uuid specified at `/var/lib/dbus/machine-id` or `/etc/machine-id`.
// If there is an error reading the files an empty string is returned.
// See https://unix.stackexchange.com/questions/144812/generate-consistent-machine-unique-id
func machineID() (string, error) {
id, err := readFile(dbusPath)
if err != nil {
// try fallback path
id, err = readFile(dbusPathEtc)
}
if err != nil {
return "", err
}
return trim(string(id)), nil
}

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// +build windows
package machineid
import (
"golang.org/x/sys/windows/registry"
)
// machineID returns the key MachineGuid in registry `HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography`.
// If there is an error running the commad an empty string is returned.
func machineID() (string, error) {
k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Cryptography`, registry.QUERY_VALUE|registry.WOW64_64KEY)
if err != nil {
return "", err
}
defer k.Close()
s, _, err := k.GetStringValue("MachineGuid")
if err != nil {
return "", err
}
return s, nil
}

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.PHONY: build clean default test
build: clean
@go build -o machineid ./cmd/machineid/main.go
clean:
@rm -rf ./machineid
test:
go test ./...
default: build

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
// Package registry provides access to the Windows registry.
//
// Here is a simple example, opening a registry key and reading a string value from it.
//
// k, err := registry.OpenKey(registry.LOCAL_MACHINE, `SOFTWARE\Microsoft\Windows NT\CurrentVersion`, registry.QUERY_VALUE)
// if err != nil {
// log.Fatal(err)
// }
// defer k.Close()
//
// s, _, err := k.GetStringValue("SystemRoot")
// if err != nil {
// log.Fatal(err)
// }
// fmt.Printf("Windows system root is %q\n", s)
//
package registry
import (
"io"
"syscall"
"time"
)
const (
// Registry key security and access rights.
// See https://msdn.microsoft.com/en-us/library/windows/desktop/ms724878.aspx
// for details.
ALL_ACCESS = 0xf003f
CREATE_LINK = 0x00020
CREATE_SUB_KEY = 0x00004
ENUMERATE_SUB_KEYS = 0x00008
EXECUTE = 0x20019
NOTIFY = 0x00010
QUERY_VALUE = 0x00001
READ = 0x20019
SET_VALUE = 0x00002
WOW64_32KEY = 0x00200
WOW64_64KEY = 0x00100
WRITE = 0x20006
)
// Key is a handle to an open Windows registry key.
// Keys can be obtained by calling OpenKey; there are
// also some predefined root keys such as CURRENT_USER.
// Keys can be used directly in the Windows API.
type Key syscall.Handle
const (
// Windows defines some predefined root keys that are always open.
// An application can use these keys as entry points to the registry.
// Normally these keys are used in OpenKey to open new keys,
// but they can also be used anywhere a Key is required.
CLASSES_ROOT = Key(syscall.HKEY_CLASSES_ROOT)
CURRENT_USER = Key(syscall.HKEY_CURRENT_USER)
LOCAL_MACHINE = Key(syscall.HKEY_LOCAL_MACHINE)
USERS = Key(syscall.HKEY_USERS)
CURRENT_CONFIG = Key(syscall.HKEY_CURRENT_CONFIG)
PERFORMANCE_DATA = Key(syscall.HKEY_PERFORMANCE_DATA)
)
// Close closes open key k.
func (k Key) Close() error {
return syscall.RegCloseKey(syscall.Handle(k))
}
// OpenKey opens a new key with path name relative to key k.
// It accepts any open key, including CURRENT_USER and others,
// and returns the new key and an error.
// The access parameter specifies desired access rights to the
// key to be opened.
func OpenKey(k Key, path string, access uint32) (Key, error) {
p, err := syscall.UTF16PtrFromString(path)
if err != nil {
return 0, err
}
var subkey syscall.Handle
err = syscall.RegOpenKeyEx(syscall.Handle(k), p, 0, access, &subkey)
if err != nil {
return 0, err
}
return Key(subkey), nil
}
// OpenRemoteKey opens a predefined registry key on another
// computer pcname. The key to be opened is specified by k, but
// can only be one of LOCAL_MACHINE, PERFORMANCE_DATA or USERS.
// If pcname is "", OpenRemoteKey returns local computer key.
func OpenRemoteKey(pcname string, k Key) (Key, error) {
var err error
var p *uint16
if pcname != "" {
p, err = syscall.UTF16PtrFromString(`\\` + pcname)
if err != nil {
return 0, err
}
}
var remoteKey syscall.Handle
err = regConnectRegistry(p, syscall.Handle(k), &remoteKey)
if err != nil {
return 0, err
}
return Key(remoteKey), nil
}
// ReadSubKeyNames returns the names of subkeys of key k.
// The parameter n controls the number of returned names,
// analogous to the way os.File.Readdirnames works.
func (k Key) ReadSubKeyNames(n int) ([]string, error) {
names := make([]string, 0)
// Registry key size limit is 255 bytes and described there:
// https://msdn.microsoft.com/library/windows/desktop/ms724872.aspx
buf := make([]uint16, 256) //plus extra room for terminating zero byte
loopItems:
for i := uint32(0); ; i++ {
if n > 0 {
if len(names) == n {
return names, nil
}
}
l := uint32(len(buf))
for {
err := syscall.RegEnumKeyEx(syscall.Handle(k), i, &buf[0], &l, nil, nil, nil, nil)
if err == nil {
break
}
if err == syscall.ERROR_MORE_DATA {
// Double buffer size and try again.
l = uint32(2 * len(buf))
buf = make([]uint16, l)
continue
}
if err == _ERROR_NO_MORE_ITEMS {
break loopItems
}
return names, err
}
names = append(names, syscall.UTF16ToString(buf[:l]))
}
if n > len(names) {
return names, io.EOF
}
return names, nil
}
// CreateKey creates a key named path under open key k.
// CreateKey returns the new key and a boolean flag that reports
// whether the key already existed.
// The access parameter specifies the access rights for the key
// to be created.
func CreateKey(k Key, path string, access uint32) (newk Key, openedExisting bool, err error) {
var h syscall.Handle
var d uint32
err = regCreateKeyEx(syscall.Handle(k), syscall.StringToUTF16Ptr(path),
0, nil, _REG_OPTION_NON_VOLATILE, access, nil, &h, &d)
if err != nil {
return 0, false, err
}
return Key(h), d == _REG_OPENED_EXISTING_KEY, nil
}
// DeleteKey deletes the subkey path of key k and its values.
func DeleteKey(k Key, path string) error {
return regDeleteKey(syscall.Handle(k), syscall.StringToUTF16Ptr(path))
}
// A KeyInfo describes the statistics of a key. It is returned by Stat.
type KeyInfo struct {
SubKeyCount uint32
MaxSubKeyLen uint32 // size of the key's subkey with the longest name, in Unicode characters, not including the terminating zero byte
ValueCount uint32
MaxValueNameLen uint32 // size of the key's longest value name, in Unicode characters, not including the terminating zero byte
MaxValueLen uint32 // longest data component among the key's values, in bytes
lastWriteTime syscall.Filetime
}
// ModTime returns the key's last write time.
func (ki *KeyInfo) ModTime() time.Time {
return time.Unix(0, ki.lastWriteTime.Nanoseconds())
}
// Stat retrieves information about the open key k.
func (k Key) Stat() (*KeyInfo, error) {
var ki KeyInfo
err := syscall.RegQueryInfoKey(syscall.Handle(k), nil, nil, nil,
&ki.SubKeyCount, &ki.MaxSubKeyLen, nil, &ki.ValueCount,
&ki.MaxValueNameLen, &ki.MaxValueLen, nil, &ki.lastWriteTime)
if err != nil {
return nil, err
}
return &ki, nil
}

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build generate
package registry
//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go syscall.go

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package registry
import "syscall"
const (
_REG_OPTION_NON_VOLATILE = 0
_REG_CREATED_NEW_KEY = 1
_REG_OPENED_EXISTING_KEY = 2
_ERROR_NO_MORE_ITEMS syscall.Errno = 259
)
func LoadRegLoadMUIString() error {
return procRegLoadMUIStringW.Find()
}
//sys regCreateKeyEx(key syscall.Handle, subkey *uint16, reserved uint32, class *uint16, options uint32, desired uint32, sa *syscall.SecurityAttributes, result *syscall.Handle, disposition *uint32) (regerrno error) = advapi32.RegCreateKeyExW
//sys regDeleteKey(key syscall.Handle, subkey *uint16) (regerrno error) = advapi32.RegDeleteKeyW
//sys regSetValueEx(key syscall.Handle, valueName *uint16, reserved uint32, vtype uint32, buf *byte, bufsize uint32) (regerrno error) = advapi32.RegSetValueExW
//sys regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) = advapi32.RegEnumValueW
//sys regDeleteValue(key syscall.Handle, name *uint16) (regerrno error) = advapi32.RegDeleteValueW
//sys regLoadMUIString(key syscall.Handle, name *uint16, buf *uint16, buflen uint32, buflenCopied *uint32, flags uint32, dir *uint16) (regerrno error) = advapi32.RegLoadMUIStringW
//sys regConnectRegistry(machinename *uint16, key syscall.Handle, result *syscall.Handle) (regerrno error) = advapi32.RegConnectRegistryW
//sys expandEnvironmentStrings(src *uint16, dst *uint16, size uint32) (n uint32, err error) = kernel32.ExpandEnvironmentStringsW

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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build windows
package registry
import (
"errors"
"io"
"syscall"
"unicode/utf16"
"unsafe"
)
const (
// Registry value types.
NONE = 0
SZ = 1
EXPAND_SZ = 2
BINARY = 3
DWORD = 4
DWORD_BIG_ENDIAN = 5
LINK = 6
MULTI_SZ = 7
RESOURCE_LIST = 8
FULL_RESOURCE_DESCRIPTOR = 9
RESOURCE_REQUIREMENTS_LIST = 10
QWORD = 11
)
var (
// ErrShortBuffer is returned when the buffer was too short for the operation.
ErrShortBuffer = syscall.ERROR_MORE_DATA
// ErrNotExist is returned when a registry key or value does not exist.
ErrNotExist = syscall.ERROR_FILE_NOT_FOUND
// ErrUnexpectedType is returned by Get*Value when the value's type was unexpected.
ErrUnexpectedType = errors.New("unexpected key value type")
)
// GetValue retrieves the type and data for the specified value associated
// with an open key k. It fills up buffer buf and returns the retrieved
// byte count n. If buf is too small to fit the stored value it returns
// ErrShortBuffer error along with the required buffer size n.
// If no buffer is provided, it returns true and actual buffer size n.
// If no buffer is provided, GetValue returns the value's type only.
// If the value does not exist, the error returned is ErrNotExist.
//
// GetValue is a low level function. If value's type is known, use the appropriate
// Get*Value function instead.
func (k Key) GetValue(name string, buf []byte) (n int, valtype uint32, err error) {
pname, err := syscall.UTF16PtrFromString(name)
if err != nil {
return 0, 0, err
}
var pbuf *byte
if len(buf) > 0 {
pbuf = (*byte)(unsafe.Pointer(&buf[0]))
}
l := uint32(len(buf))
err = syscall.RegQueryValueEx(syscall.Handle(k), pname, nil, &valtype, pbuf, &l)
if err != nil {
return int(l), valtype, err
}
return int(l), valtype, nil
}
func (k Key) getValue(name string, buf []byte) (data []byte, valtype uint32, err error) {
p, err := syscall.UTF16PtrFromString(name)
if err != nil {
return nil, 0, err
}
var t uint32
n := uint32(len(buf))
for {
err = syscall.RegQueryValueEx(syscall.Handle(k), p, nil, &t, (*byte)(unsafe.Pointer(&buf[0])), &n)
if err == nil {
return buf[:n], t, nil
}
if err != syscall.ERROR_MORE_DATA {
return nil, 0, err
}
if n <= uint32(len(buf)) {
return nil, 0, err
}
buf = make([]byte, n)
}
}
// GetStringValue retrieves the string value for the specified
// value name associated with an open key k. It also returns the value's type.
// If value does not exist, GetStringValue returns ErrNotExist.
// If value is not SZ or EXPAND_SZ, it will return the correct value
// type and ErrUnexpectedType.
func (k Key) GetStringValue(name string) (val string, valtype uint32, err error) {
data, typ, err2 := k.getValue(name, make([]byte, 64))
if err2 != nil {
return "", typ, err2
}
switch typ {
case SZ, EXPAND_SZ:
default:
return "", typ, ErrUnexpectedType
}
if len(data) == 0 {
return "", typ, nil
}
u := (*[1 << 29]uint16)(unsafe.Pointer(&data[0]))[: len(data)/2 : len(data)/2]
return syscall.UTF16ToString(u), typ, nil
}
// GetMUIStringValue retrieves the localized string value for
// the specified value name associated with an open key k.
// If the value name doesn't exist or the localized string value
// can't be resolved, GetMUIStringValue returns ErrNotExist.
// GetMUIStringValue panics if the system doesn't support
// regLoadMUIString; use LoadRegLoadMUIString to check if
// regLoadMUIString is supported before calling this function.
func (k Key) GetMUIStringValue(name string) (string, error) {
pname, err := syscall.UTF16PtrFromString(name)
if err != nil {
return "", err
}
buf := make([]uint16, 1024)
var buflen uint32
var pdir *uint16
err = regLoadMUIString(syscall.Handle(k), pname, &buf[0], uint32(len(buf)), &buflen, 0, pdir)
if err == syscall.ERROR_FILE_NOT_FOUND { // Try fallback path
// Try to resolve the string value using the system directory as
// a DLL search path; this assumes the string value is of the form
// @[path]\dllname,-strID but with no path given, e.g. @tzres.dll,-320.
// This approach works with tzres.dll but may have to be revised
// in the future to allow callers to provide custom search paths.
var s string
s, err = ExpandString("%SystemRoot%\\system32\\")
if err != nil {
return "", err
}
pdir, err = syscall.UTF16PtrFromString(s)
if err != nil {
return "", err
}
err = regLoadMUIString(syscall.Handle(k), pname, &buf[0], uint32(len(buf)), &buflen, 0, pdir)
}
for err == syscall.ERROR_MORE_DATA { // Grow buffer if needed
if buflen <= uint32(len(buf)) {
break // Buffer not growing, assume race; break
}
buf = make([]uint16, buflen)
err = regLoadMUIString(syscall.Handle(k), pname, &buf[0], uint32(len(buf)), &buflen, 0, pdir)
}
if err != nil {
return "", err
}
return syscall.UTF16ToString(buf), nil
}
// ExpandString expands environment-variable strings and replaces
// them with the values defined for the current user.
// Use ExpandString to expand EXPAND_SZ strings.
func ExpandString(value string) (string, error) {
if value == "" {
return "", nil
}
p, err := syscall.UTF16PtrFromString(value)
if err != nil {
return "", err
}
r := make([]uint16, 100)
for {
n, err := expandEnvironmentStrings(p, &r[0], uint32(len(r)))
if err != nil {
return "", err
}
if n <= uint32(len(r)) {
return syscall.UTF16ToString(r[:n]), nil
}
r = make([]uint16, n)
}
}
// GetStringsValue retrieves the []string value for the specified
// value name associated with an open key k. It also returns the value's type.
// If value does not exist, GetStringsValue returns ErrNotExist.
// If value is not MULTI_SZ, it will return the correct value
// type and ErrUnexpectedType.
func (k Key) GetStringsValue(name string) (val []string, valtype uint32, err error) {
data, typ, err2 := k.getValue(name, make([]byte, 64))
if err2 != nil {
return nil, typ, err2
}
if typ != MULTI_SZ {
return nil, typ, ErrUnexpectedType
}
if len(data) == 0 {
return nil, typ, nil
}
p := (*[1 << 29]uint16)(unsafe.Pointer(&data[0]))[: len(data)/2 : len(data)/2]
if len(p) == 0 {
return nil, typ, nil
}
if p[len(p)-1] == 0 {
p = p[:len(p)-1] // remove terminating null
}
val = make([]string, 0, 5)
from := 0
for i, c := range p {
if c == 0 {
val = append(val, string(utf16.Decode(p[from:i])))
from = i + 1
}
}
return val, typ, nil
}
// GetIntegerValue retrieves the integer value for the specified
// value name associated with an open key k. It also returns the value's type.
// If value does not exist, GetIntegerValue returns ErrNotExist.
// If value is not DWORD or QWORD, it will return the correct value
// type and ErrUnexpectedType.
func (k Key) GetIntegerValue(name string) (val uint64, valtype uint32, err error) {
data, typ, err2 := k.getValue(name, make([]byte, 8))
if err2 != nil {
return 0, typ, err2
}
switch typ {
case DWORD:
if len(data) != 4 {
return 0, typ, errors.New("DWORD value is not 4 bytes long")
}
var val32 uint32
copy((*[4]byte)(unsafe.Pointer(&val32))[:], data)
return uint64(val32), DWORD, nil
case QWORD:
if len(data) != 8 {
return 0, typ, errors.New("QWORD value is not 8 bytes long")
}
copy((*[8]byte)(unsafe.Pointer(&val))[:], data)
return val, QWORD, nil
default:
return 0, typ, ErrUnexpectedType
}
}
// GetBinaryValue retrieves the binary value for the specified
// value name associated with an open key k. It also returns the value's type.
// If value does not exist, GetBinaryValue returns ErrNotExist.
// If value is not BINARY, it will return the correct value
// type and ErrUnexpectedType.
func (k Key) GetBinaryValue(name string) (val []byte, valtype uint32, err error) {
data, typ, err2 := k.getValue(name, make([]byte, 64))
if err2 != nil {
return nil, typ, err2
}
if typ != BINARY {
return nil, typ, ErrUnexpectedType
}
return data, typ, nil
}
func (k Key) setValue(name string, valtype uint32, data []byte) error {
p, err := syscall.UTF16PtrFromString(name)
if err != nil {
return err
}
if len(data) == 0 {
return regSetValueEx(syscall.Handle(k), p, 0, valtype, nil, 0)
}
return regSetValueEx(syscall.Handle(k), p, 0, valtype, &data[0], uint32(len(data)))
}
// SetDWordValue sets the data and type of a name value
// under key k to value and DWORD.
func (k Key) SetDWordValue(name string, value uint32) error {
return k.setValue(name, DWORD, (*[4]byte)(unsafe.Pointer(&value))[:])
}
// SetQWordValue sets the data and type of a name value
// under key k to value and QWORD.
func (k Key) SetQWordValue(name string, value uint64) error {
return k.setValue(name, QWORD, (*[8]byte)(unsafe.Pointer(&value))[:])
}
func (k Key) setStringValue(name string, valtype uint32, value string) error {
v, err := syscall.UTF16FromString(value)
if err != nil {
return err
}
buf := (*[1 << 29]byte)(unsafe.Pointer(&v[0]))[: len(v)*2 : len(v)*2]
return k.setValue(name, valtype, buf)
}
// SetStringValue sets the data and type of a name value
// under key k to value and SZ. The value must not contain a zero byte.
func (k Key) SetStringValue(name, value string) error {
return k.setStringValue(name, SZ, value)
}
// SetExpandStringValue sets the data and type of a name value
// under key k to value and EXPAND_SZ. The value must not contain a zero byte.
func (k Key) SetExpandStringValue(name, value string) error {
return k.setStringValue(name, EXPAND_SZ, value)
}
// SetStringsValue sets the data and type of a name value
// under key k to value and MULTI_SZ. The value strings
// must not contain a zero byte.
func (k Key) SetStringsValue(name string, value []string) error {
ss := ""
for _, s := range value {
for i := 0; i < len(s); i++ {
if s[i] == 0 {
return errors.New("string cannot have 0 inside")
}
}
ss += s + "\x00"
}
v := utf16.Encode([]rune(ss + "\x00"))
buf := (*[1 << 29]byte)(unsafe.Pointer(&v[0]))[: len(v)*2 : len(v)*2]
return k.setValue(name, MULTI_SZ, buf)
}
// SetBinaryValue sets the data and type of a name value
// under key k to value and BINARY.
func (k Key) SetBinaryValue(name string, value []byte) error {
return k.setValue(name, BINARY, value)
}
// DeleteValue removes a named value from the key k.
func (k Key) DeleteValue(name string) error {
return regDeleteValue(syscall.Handle(k), syscall.StringToUTF16Ptr(name))
}
// ReadValueNames returns the value names of key k.
// The parameter n controls the number of returned names,
// analogous to the way os.File.Readdirnames works.
func (k Key) ReadValueNames(n int) ([]string, error) {
ki, err := k.Stat()
if err != nil {
return nil, err
}
names := make([]string, 0, ki.ValueCount)
buf := make([]uint16, ki.MaxValueNameLen+1) // extra room for terminating null character
loopItems:
for i := uint32(0); ; i++ {
if n > 0 {
if len(names) == n {
return names, nil
}
}
l := uint32(len(buf))
for {
err := regEnumValue(syscall.Handle(k), i, &buf[0], &l, nil, nil, nil, nil)
if err == nil {
break
}
if err == syscall.ERROR_MORE_DATA {
// Double buffer size and try again.
l = uint32(2 * len(buf))
buf = make([]uint16, l)
continue
}
if err == _ERROR_NO_MORE_ITEMS {
break loopItems
}
return names, err
}
names = append(names, syscall.UTF16ToString(buf[:l]))
}
if n > len(names) {
return names, io.EOF
}
return names, nil
}

120
vendor/golang.org/x/sys/windows/registry/zsyscall_windows.go generated vendored Normal file
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@ -0,0 +1,120 @@
// Code generated by 'go generate'; DO NOT EDIT.
package registry
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var _ unsafe.Pointer
// Do the interface allocations only once for common
// Errno values.
const (
errnoERROR_IO_PENDING = 997
)
var (
errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
)
// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
switch e {
case 0:
return nil
case errnoERROR_IO_PENDING:
return errERROR_IO_PENDING
}
// TODO: add more here, after collecting data on the common
// error values see on Windows. (perhaps when running
// all.bat?)
return e
}
var (
modadvapi32 = windows.NewLazySystemDLL("advapi32.dll")
modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
procRegCreateKeyExW = modadvapi32.NewProc("RegCreateKeyExW")
procRegDeleteKeyW = modadvapi32.NewProc("RegDeleteKeyW")
procRegSetValueExW = modadvapi32.NewProc("RegSetValueExW")
procRegEnumValueW = modadvapi32.NewProc("RegEnumValueW")
procRegDeleteValueW = modadvapi32.NewProc("RegDeleteValueW")
procRegLoadMUIStringW = modadvapi32.NewProc("RegLoadMUIStringW")
procRegConnectRegistryW = modadvapi32.NewProc("RegConnectRegistryW")
procExpandEnvironmentStringsW = modkernel32.NewProc("ExpandEnvironmentStringsW")
)
func regCreateKeyEx(key syscall.Handle, subkey *uint16, reserved uint32, class *uint16, options uint32, desired uint32, sa *syscall.SecurityAttributes, result *syscall.Handle, disposition *uint32) (regerrno error) {
r0, _, _ := syscall.Syscall9(procRegCreateKeyExW.Addr(), 9, uintptr(key), uintptr(unsafe.Pointer(subkey)), uintptr(reserved), uintptr(unsafe.Pointer(class)), uintptr(options), uintptr(desired), uintptr(unsafe.Pointer(sa)), uintptr(unsafe.Pointer(result)), uintptr(unsafe.Pointer(disposition)))
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}
func regDeleteKey(key syscall.Handle, subkey *uint16) (regerrno error) {
r0, _, _ := syscall.Syscall(procRegDeleteKeyW.Addr(), 2, uintptr(key), uintptr(unsafe.Pointer(subkey)), 0)
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}
func regSetValueEx(key syscall.Handle, valueName *uint16, reserved uint32, vtype uint32, buf *byte, bufsize uint32) (regerrno error) {
r0, _, _ := syscall.Syscall6(procRegSetValueExW.Addr(), 6, uintptr(key), uintptr(unsafe.Pointer(valueName)), uintptr(reserved), uintptr(vtype), uintptr(unsafe.Pointer(buf)), uintptr(bufsize))
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}
func regEnumValue(key syscall.Handle, index uint32, name *uint16, nameLen *uint32, reserved *uint32, valtype *uint32, buf *byte, buflen *uint32) (regerrno error) {
r0, _, _ := syscall.Syscall9(procRegEnumValueW.Addr(), 8, uintptr(key), uintptr(index), uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(nameLen)), uintptr(unsafe.Pointer(reserved)), uintptr(unsafe.Pointer(valtype)), uintptr(unsafe.Pointer(buf)), uintptr(unsafe.Pointer(buflen)), 0)
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}
func regDeleteValue(key syscall.Handle, name *uint16) (regerrno error) {
r0, _, _ := syscall.Syscall(procRegDeleteValueW.Addr(), 2, uintptr(key), uintptr(unsafe.Pointer(name)), 0)
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}
func regLoadMUIString(key syscall.Handle, name *uint16, buf *uint16, buflen uint32, buflenCopied *uint32, flags uint32, dir *uint16) (regerrno error) {
r0, _, _ := syscall.Syscall9(procRegLoadMUIStringW.Addr(), 7, uintptr(key), uintptr(unsafe.Pointer(name)), uintptr(unsafe.Pointer(buf)), uintptr(buflen), uintptr(unsafe.Pointer(buflenCopied)), uintptr(flags), uintptr(unsafe.Pointer(dir)), 0, 0)
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}
func regConnectRegistry(machinename *uint16, key syscall.Handle, result *syscall.Handle) (regerrno error) {
r0, _, _ := syscall.Syscall(procRegConnectRegistryW.Addr(), 3, uintptr(unsafe.Pointer(machinename)), uintptr(key), uintptr(unsafe.Pointer(result)))
if r0 != 0 {
regerrno = syscall.Errno(r0)
}
return
}
func expandEnvironmentStrings(src *uint16, dst *uint16, size uint32) (n uint32, err error) {
r0, _, e1 := syscall.Syscall(procExpandEnvironmentStringsW.Addr(), 3, uintptr(unsafe.Pointer(src)), uintptr(unsafe.Pointer(dst)), uintptr(size))
n = uint32(r0)
if n == 0 {
if e1 != 0 {
err = errnoErr(e1)
} else {
err = syscall.EINVAL
}
}
return
}