1package authz
 2
 3import (
 4	"fmt"
 5	"net"
 6	"net/http"
 7
 8	"github.com/casbin/casbin/v3"
 9	"github.com/xlgmokha/x/pkg/log"
10	"github.com/xlgmokha/x/pkg/x"
11)
12
13func WithCasbin() Authorizer {
14	enforcer := x.Must(casbin.NewEnforcer("casbin.conf", "casbin.csv"))
15
16	return AuthorizerFunc(func(r *http.Request) bool {
17		host, _, err := net.SplitHostPort(r.Host)
18		if err != nil {
19			log.WithFields(r.Context(), log.Fields{"error": err})
20			return false
21		}
22
23		subject, found := TokenFrom(r).Subject()
24		if !found {
25			subject = "*"
26		}
27		ok, err := enforcer.Enforce(subject, host, r.Method, r.URL.Path)
28		if err != nil {
29			log.WithFields(r.Context(), log.Fields{"error": err})
30			return false
31		}
32
33		fmt.Printf("%v: %v -> %v %v%v\n", ok, subject, r.Method, host, r.URL.Path)
34		log.WithFields(r.Context(), log.Fields{
35			"authz":   ok,
36			"subject": subject,
37			"action":  r.Method,
38			"domain":  host,
39			"object":  r.URL.Path,
40		})
41		return ok
42	})
43}