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Add the galene-link utility.

This commit is contained in:
Juliusz Chroboczek 2022-02-20 01:16:26 +01:00
parent 37ef768ac0
commit c4d46d20aa
3 changed files with 123 additions and 8 deletions

115
galene-link/galene-link.go Normal file
View file

@ -0,0 +1,115 @@
package main
import (
"flag"
"fmt"
"log"
"net/url"
"path"
"time"
"github.com/golang-jwt/jwt/v4"
"github.com/jech/galene/group"
"github.com/jech/galene/token"
)
func main() {
var username, kid, server string
var valid int
var tokenOnly bool
flag.StringVar(&group.Directory, "groups", "./groups/",
"group description `directory`")
flag.StringVar(&username, "user", "", "username")
flag.StringVar(&kid, "kid", "", "`id` of key to use")
flag.IntVar(&valid, "valid", 86400, "`seconds` validity")
flag.StringVar(&server, "server", "https://galene.org:8443",
"server `url`")
flag.BoolVar(&tokenOnly, "token", false, "generate token only")
flag.Parse()
if flag.NArg() != 1 {
log.Fatal("One argument (the group URL) required")
}
groupname := flag.Arg(0)
desc, err := group.GetDescription(groupname)
if err != nil {
log.Fatal("Get group description: ", err)
}
serverURL, err := url.Parse(server)
if err != nil {
log.Fatal("Couldn't parse server URL")
}
pth := path.Join(path.Join(serverURL.Path, "group"), groupname) + "/"
groupURL := &url.URL{
Scheme: serverURL.Scheme,
Host: serverURL.Host,
Path: pth,
}
keys := desc.AuthKeys
var key map[string]interface{}
for _, k := range keys {
kid2, _ := k["kid"].(string)
if kid == "" || kid == kid2 {
key = k
break
}
}
if key == nil {
log.Fatal("Couldn't find key")
}
alg, ok := key["alg"].(string)
var method jwt.SigningMethod
if ok {
method = jwt.GetSigningMethod(alg)
}
if method == nil {
log.Fatal("Couldn't determine key signing method")
}
kstring, err := token.ParseKey(key)
if err != nil {
log.Fatal("Couldn't parse key")
}
now := time.Now()
end := now.Add(time.Second * time.Duration(valid))
token := jwt.NewWithClaims(
method,
&jwt.MapClaims{
"sub": username,
"aud": groupURL.String(),
"exp": &jwt.NumericDate{end},
"nbf": &jwt.NumericDate{now},
"iat": &jwt.NumericDate{now},
"permissions": []string{"present"},
},
)
s, err := token.SignedString(kstring)
if err != nil {
log.Fatal("Couldn't sign token: ", err)
}
if tokenOnly {
fmt.Println(s)
} else {
query := url.Values{}
if username != "" {
query.Add("username", username)
}
query.Add("token", s)
outURL := &url.URL{
Scheme: groupURL.Scheme,
Host: groupURL.Host,
Path: groupURL.Path,
RawQuery: query.Encode(),
}
fmt.Println(outURL.String())
}
}

View file

@ -24,7 +24,7 @@ func parseBase64(k string, d map[string]interface{}) ([]byte, error) {
return vv, nil
}
func parseKey(key map[string]interface{}) (interface{}, error) {
func ParseKey(key map[string]interface{}) (interface{}, error) {
kty, ok := key["kty"].(string)
if !ok {
return nil, errors.New("kty not found")
@ -99,7 +99,7 @@ func getKey(header map[string]interface{}, keys []map[string]interface{}) (inter
kid2, _ := k["kid"].(string)
alg2, _ := k["alg"].(string)
if (kid == "" || kid == kid2) && alg == alg2 {
return parseKey(k)
return ParseKey(k)
}
}
return nil, errors.New("key not found")

View file

@ -21,13 +21,13 @@ func TestHS256(t *testing.T) {
if err != nil {
t.Fatalf("Unmarshal: %v", err)
}
k, err := parseKey(j)
k, err := ParseKey(j)
if err != nil {
t.Fatalf("parseKey: %v", err)
t.Fatalf("ParseKey: %v", err)
}
kk, ok := k.([]byte)
if !ok || len(kk) != 32 {
t.Errorf("parseKey: got %v", kk)
t.Errorf("ParseKey: got %v", kk)
}
}
@ -44,13 +44,13 @@ func TestES256(t *testing.T) {
if err != nil {
t.Fatalf("Unmarshal: %v", err)
}
k, err := parseKey(j)
k, err := ParseKey(j)
if err != nil {
t.Fatalf("parseKey: %v", err)
t.Fatalf("ParseKey: %v", err)
}
kk, ok := k.(*ecdsa.PublicKey)
if !ok || kk.Params().Name != "P-256" {
t.Errorf("parseKey: got %v", kk)
t.Errorf("ParseKey: got %v", kk)
}
if !kk.IsOnCurve(kk.X, kk.Y) {
t.Errorf("point is not on curve")