1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package syspolicy
import (
"errors"
"fmt"
"tailscale.com/util/clientmetric"
"tailscale.com/util/winutil"
)
var (
windowsErrors = clientmetric.NewCounter("windows_syspolicy_errors")
windowsAny = clientmetric.NewGauge("windows_syspolicy_any")
)
type windowsHandler struct{}
func init() {
RegisterHandler(NewCachingHandler(windowsHandler{}))
keyList := []struct {
isSet func(Key) bool
keys []Key
}{
{
isSet: func(k Key) bool {
_, err := handler.ReadString(string(k))
return err == nil
},
keys: stringKeys,
},
{
isSet: func(k Key) bool {
_, err := handler.ReadBoolean(string(k))
return err == nil
},
keys: boolKeys,
},
{
isSet: func(k Key) bool {
_, err := handler.ReadUInt64(string(k))
return err == nil
},
keys: uint64Keys,
},
}
var anySet bool
for _, l := range keyList {
for _, k := range l.keys {
if !l.isSet(k) {
continue
}
clientmetric.NewGauge(fmt.Sprintf("windows_syspolicy_%s", k)).Set(1)
anySet = true
}
}
if anySet {
windowsAny.Set(1)
}
}
func (windowsHandler) ReadString(key string) (string, error) {
s, err := winutil.GetPolicyString(key)
if errors.Is(err, winutil.ErrNoValue) {
err = ErrNoSuchKey
} else if err != nil {
windowsErrors.Add(1)
}
return s, err
}
func (windowsHandler) ReadUInt64(key string) (uint64, error) {
value, err := winutil.GetPolicyInteger(key)
if errors.Is(err, winutil.ErrNoValue) {
err = ErrNoSuchKey
} else if err != nil {
windowsErrors.Add(1)
}
return value, err
}
func (windowsHandler) ReadBoolean(key string) (bool, error) {
value, err := winutil.GetPolicyInteger(key)
if errors.Is(err, winutil.ErrNoValue) {
err = ErrNoSuchKey
} else if err != nil {
windowsErrors.Add(1)
}
return value != 0, err
}
|
