/
jwx.go
127 lines (110 loc) · 2.57 KB
/
jwx.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
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
package main
import (
"encoding/json"
"fmt"
"io"
"io/ioutil"
"os"
"sort"
"strings"
"github.com/lestrrat-go/jwx/jwk"
"github.com/pkg/errors"
"github.com/urfave/cli/v2"
)
var topLevelCommands []*cli.Command
type dummyWriteCloser struct {
io.Writer
}
func (*dummyWriteCloser) Close() error {
return nil
}
func outputFlag() cli.Flag {
return &cli.StringFlag{
Name: "output",
Aliases: []string{"o"},
Usage: "Write output to `FILE`",
Value: "-",
}
}
func keyFlag(use string) cli.Flag {
return &cli.StringFlag{
Name: "key",
Aliases: []string{"k"},
Usage: "`FILE` containing the key to " + use + " with",
Required: true,
}
}
func keyFormatFlag() cli.Flag {
return &cli.StringFlag{
Name: "key-format",
Usage: "JWK format: json or pem",
Value: "json",
}
}
func main() {
var app cli.App
app.Commands = topLevelCommands
app.Usage = "Tools for various JWE/JWK/JWS/JWT operations"
sort.Slice(app.Commands, func(i, j int) bool {
return strings.Compare(app.Commands[i].Name, app.Commands[j].Name) < 0
})
if err := app.Run(os.Args); err != nil {
fmt.Fprintf(os.Stderr, "%s\n", err)
os.Exit(1)
}
}
func dumpJSON(dst io.Writer, v interface{}) error {
buf, err := json.MarshalIndent(v, "", " ")
if err != nil {
return errors.Wrap(err, `failed to serialize to JSON`)
}
dst.Write(buf)
return nil
}
func getSource(filename string) (io.ReadCloser, error) {
var src io.ReadCloser
if filename == "-" {
src = ioutil.NopCloser(os.Stdin)
} else {
if filename == "" {
return nil, errors.New(`filename required (use "-" to read from stdin)`)
}
f, err := os.Open(filename)
if err != nil {
return nil, errors.Wrapf(err, `failed to open file %s`, filename)
}
src = f
}
return src, nil
}
func getOutput(filename string) (io.WriteCloser, error) {
var output io.WriteCloser
switch filename {
case "-":
output = &dummyWriteCloser{os.Stdout}
case "":
return nil, errors.New(`output must be a file name, or "-" for STDOUT`)
default:
f, err := os.OpenFile(filename, os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
return nil, errors.Wrapf(err, `failed to create file %s`, filename)
}
output = f
}
return output, nil
}
func getKeyFile(keyfile, format string) (jwk.Set, error) {
var keyoptions []jwk.ReadFileOption
switch format {
case "json":
case "pem":
keyoptions = append(keyoptions, jwk.WithPEM(true))
default:
return nil, errors.Errorf(`invalid JWK format "%s"`, format)
}
keyset, err := jwk.ReadFile(keyfile, keyoptions...)
if err != nil {
return nil, errors.Wrap(err, `failed to parse key`)
}
return keyset, nil
}