1 package roles
2
3 import (
4 "strconv"
5 "strings"
6 )
7
8 var TopLevelRoles = map[string]struct{}{
9 "root": {},
10 "targets": {},
11 "snapshot": {},
12 "timestamp": {},
13 }
14
15 func IsTopLevelRole(name string) bool {
16 _, ok := TopLevelRoles[name]
17 return ok
18 }
19
20 func IsDelegatedTargetsRole(name string) bool {
21 return !IsTopLevelRole(name)
22 }
23
24 func IsTopLevelManifest(name string) bool {
25 if IsVersionedManifest(name) {
26 var found bool
27 _, name, found = strings.Cut(name, ".")
28 if !found {
29 panic("expected a versioned manifest of the form x.role.json")
30 }
31 }
32 return IsTopLevelRole(strings.TrimSuffix(name, ".json"))
33 }
34
35 func IsDelegatedTargetsManifest(name string) bool {
36 return !IsTopLevelManifest(name)
37 }
38
39 func IsVersionedManifest(name string) bool {
40 parts := strings.Split(name, ".")
41
42 if len(parts) < 3 {
43 return false
44 }
45
46 _, err := strconv.Atoi(parts[0])
47 return err == nil
48 }
49
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