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windows/registry: add code to access remote pc registry

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Introduce OpenRemoteKey function that opens some
root registry keys on remote computer.

Also add PERFORMANCE_DATA key, since it is one of
root keys accessible via OpenRemoteKey.

Change-Id: I738fdfee52a34acd4dc09ddb91fcf0e4c707bd83
Reviewed-on: https://go-review.googlesource.com/33814
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Alex Brainman
2016-12-04 22:43:27 +00:00
parent ca83bd2cb9
commit f5a6bd4305
3 changed files with 37 additions and 5 deletions
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windows/registry/key.go
+27 -5
View File
@@ -57,11 +57,12 @@ const (
// 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)
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.
@@ -87,6 +88,27 @@ func OpenKey(k Key, path string, access uint32) (Key, error) {
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.