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|
package policies
import (
"embed"
_ "embed"
"encoding/json"
"fmt"
"io/fs"
"log"
"github.com/cedar-policy/cedar-go"
"github.com/cedar-policy/cedar-go/types"
"github.com/xlgmokha/x/pkg/x"
)
//go:embed *.cedar
var files embed.FS
var All *cedar.PolicySet = cedar.NewPolicySet()
const entitiesJSON = `[
{
"uid": { "type": "User", "id": "alice" },
"attrs": { "age": 18 },
"parents": []
},
{
"uid": { "type": "Photo", "id": "VacationPhoto94.jpg" },
"attrs": {},
"parents": [{ "type": "Album", "id": "jane_vacation" }]
}
]`
func init() {
err := fs.WalkDir(files, ".", func(path string, d fs.DirEntry, err error) error {
if err != nil {
return err
}
if d.IsDir() {
return nil
}
content, err := fs.ReadFile(files, path)
if err != nil {
return err
}
var policy cedar.Policy
if err := policy.UnmarshalCedar(content); err != nil {
return err
}
All.Add(cedar.PolicyID(path), &policy)
return nil
})
if err != nil {
log.Fatal(err)
}
}
func Allowed(request cedar.Request) bool {
var entities cedar.EntityMap
x.Check(json.Unmarshal([]byte(entitiesJSON), &entities))
ok, diagnostic := All.IsAuthorized(entities, request)
if len(diagnostic.Errors) > 0 || len(diagnostic.Reasons) > 0 {
fmt.Printf("%v %v\n", diagnostic.Errors, diagnostic.Reasons)
}
return ok == types.Allow
}
|
