-
Notifications
You must be signed in to change notification settings - Fork 17
/
decode.go
107 lines (91 loc) · 2.58 KB
/
decode.go
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
96
97
98
99
100
101
102
103
104
105
106
107
/*
Copyright © 2022 - 2024 SUSE LLC
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 dmidecode
import (
"bufio"
"bytes"
"fmt"
"io"
"os/exec"
"strings"
values "github.com/rancher/wrangler/v2/pkg/data"
"github.com/rancher/wrangler/v2/pkg/kv"
)
var smbiosTypes = []string{
"0", // BIOS info
"1", // System information
"2", // Base Board Information
"3", // Chassis Information
"4", // Processor information
"11", // OEM strings
}
func Decode() (map[string]interface{}, error) {
buf := &bytes.Buffer{}
for _, handle := range smbiosTypes {
tempBuf := &bytes.Buffer{}
cmd := exec.Command("dmidecode", "-t", handle)
cmd.Stdout = tempBuf
if err := cmd.Run(); err != nil {
return nil, fmt.Errorf("looking up SMBIOS tables (using dmidecode): %w", err)
}
buf.Write(tempBuf.Bytes())
}
return dmiOutputToMap(buf), nil
}
func dmiOutputToMap(buf io.Reader) map[string]interface{} {
var (
result = map[string]interface{}{}
scanner = bufio.NewScanner(buf)
start = false
lastKey []string
stopLines = map[string]bool{
"OEM-specific Type": true,
"End Of Table": true,
}
)
for scanner.Scan() {
line := scanner.Text()
if strings.HasPrefix(line, "Handle ") {
start = true
continue
} else if strings.TrimSpace(line) == "" || !start || stopLines[line] {
start = false
continue
}
var key []string
for strings.HasPrefix(line, "\t") {
line = strings.TrimPrefix(line, "\t")
if len(lastKey) > len(key) {
key = append(key, lastKey[len(key)])
}
}
name, value := kv.Split(line, ": ")
key = append(key, name)
if strings.TrimSpace(value) != "" || strings.Contains(line, ":") {
values.PutValue(result, value, key...)
} else if len(key) > 1 {
parentKey := key[:len(key)-1]
parentValue := values.GetValueN(result, parentKey...)
if parentSlice, ok := parentValue.([]interface{}); ok {
parentValue = append(parentSlice, name)
} else {
parentValue = []interface{}{name}
}
values.PutValue(result, parentValue, parentKey...)
} else {
values.PutValue(result, map[string]interface{}{}, key...)
}
lastKey = key
}
return result
}