feat(chiauth): add GetJWS(r) helper

README.md

@@ -39,9 +39,8 @@ func main() {
 	r.Use(tokenVerifier)
 
 	r.Post("/api/users/profile", func(w http.ResponseWriter, r *http.Request) {
-		ctx := r.Context()
-		jws, ok := ctx.Value(chiauth.JWSKey).(*libauth.JWS)
-		if !ok || !jws.Trusted {
+		jws := chiauth.GetJWS(r)
+		if nil == jws || !jws.Trusted {
 			http.Error(w, "Unauthorized", http.StatusUnauthorized)
 			return
 		}

chiauth/chiauth.go

@@ -88,3 +88,10 @@ func NewTokenVerifier(opts VerificationParams) func(http.Handler) http.Handler {
 		})
 	}
 }
+
+// GetJWS retrieves *libauth.JWS from r.Context()
+func GetJWS(r *http.Request) *libauth.JWS {
+	ctx := r.Context()
+	jws, _ := ctx.Value(JWSKey).(*libauth.JWS)
+	return jws
+}

examples/server.go

@@ -10,7 +10,6 @@ import (
 	"github.com/go-chi/chi/v5"
 
 	"git.rootprojects.org/root/keypairs/keyfetch"
-	"git.rootprojects.org/root/libauth"
 	"git.rootprojects.org/root/libauth/chiauth"
 )
 
@@ -38,9 +37,8 @@ func main() {
 		r.Use(tokenVerifier)
 
 		r.Post("/api/users/profile", func(w http.ResponseWriter, r *http.Request) {
-			ctx := r.Context()
-			jws, ok := ctx.Value(chiauth.JWSKey).(*libauth.JWS)
-			if !ok || !jws.Trusted {
+			jws := chiauth.GetJWS(r)
+			if nil == jws || !jws.Trusted {
 				http.Error(w, "Unauthorized", http.StatusUnauthorized)
 				return
 			}