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introspect and client assertion

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This commit is contained in:
Livio Amstutz 2021-02-01 17:17:40 +01:00
parent 50ab51bb46
commit 960be5af1f
19 changed files with 413 additions and 156 deletions
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166
example/client/api/api.go
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@ -1,90 +1,102 @@
package main
// import (
// "encoding/json"
// "fmt"
// "log"
// "net/http"
// "os"
import (
"encoding/json"
"fmt"
"log"
"net/http"
"os"
"strings"
"time"
// "github.com/caos/oidc/pkg/oidc"
// "github.com/caos/oidc/pkg/oidc/rp"
// "github.com/caos/utils/logging"
// )
"github.com/gorilla/mux"
"github.com/sirupsen/logrus"
// const (
// publicURL string = "/public"
// protectedURL string = "/protected"
// protectedExchangeURL string = "/protected/exchange"
// )
"github.com/caos/oidc/pkg/oidc"
"github.com/caos/oidc/pkg/rp"
)
const (
publicURL string = "/public"
protectedURL string = "/protected"
protectedClaimURL string = "/protected/{claim}/{value}"
)
func main() {
// clientID := os.Getenv("CLIENT_ID")
// clientSecret := os.Getenv("CLIENT_SECRET")
// issuer := os.Getenv("ISSUER")
// port := os.Getenv("PORT")
keyPath := os.Getenv("KEY")
port := os.Getenv("PORT")
// // ctx := context.Background()
provider, err := rp.NewResourceServerFromKeyFile(keyPath)
if err != nil {
logrus.Fatalf("error creating provider %s", err.Error())
}
// providerConfig := &oidc.ProviderConfig{
// ClientID: clientID,
// ClientSecret: clientSecret,
// Issuer: issuer,
// }
// provider, err := rp.NewDefaultProvider(providerConfig)
// logging.Log("APP-nx6PeF").OnError(err).Panic("error creating provider")
router := mux.NewRouter()
// http.HandleFunc(publicURL, func(w http.ResponseWriter, r *http.Request) {
// w.Write([]byte("OK"))
// })
//public url accessible without any authorization
//will print `OK` and current timestamp
router.HandleFunc(publicURL, func(w http.ResponseWriter, r *http.Request) {
w.Write([]byte("OK " + time.Now().String()))
})
// http.HandleFunc(protectedURL, func(w http.ResponseWriter, r *http.Request) {
// ok, token := checkToken(w, r)
// if !ok {
// return
// }
// resp, err := provider.Introspect(r.Context(), token)
// if err != nil {
// http.Error(w, err.Error(), http.StatusForbidden)
// return
// }
// data, err := json.Marshal(resp)
// if err != nil {
// http.Error(w, err.Error(), http.StatusInternalServerError)
// return
// }
// w.Write(data)
// })
//protected url which needs an active token
//will print the result of the introspection endpoint on success
router.HandleFunc(protectedURL, func(w http.ResponseWriter, r *http.Request) {
ok, token := checkToken(w, r)
if !ok {
return
}
resp, err := rp.Introspect(r.Context(), provider, token)
if err != nil {
http.Error(w, err.Error(), http.StatusForbidden)
return
}
data, err := json.Marshal(resp)
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
w.Write(data)
})
// http.HandleFunc(protectedExchangeURL, func(w http.ResponseWriter, r *http.Request) {
// ok, token := checkToken(w, r)
// if !ok {
// return
// }
// tokens, err := provider.DelegationTokenExchange(r.Context(), token, oidc.WithResource([]string{"Test"}))
// if err != nil {
// http.Error(w, "failed to exchange token: "+err.Error(), http.StatusUnauthorized)
// return
// }
//protected url which needs an active token and checks if the response of the introspect endpoint
//contains a requested claim with the required (string) value
//e.g. /protected/username/livio@caos.ch
router.HandleFunc(protectedClaimURL, func(w http.ResponseWriter, r *http.Request) {
ok, token := checkToken(w, r)
if !ok {
return
}
resp, err := rp.Introspect(r.Context(), provider, token)
if err != nil {
http.Error(w, err.Error(), http.StatusForbidden)
return
}
params := mux.Vars(r)
requestedClaim := params["claim"]
requestedValue := params["value"]
value, ok := resp.GetClaim(requestedClaim).(string)
if !ok || value == "" || value != requestedValue {
http.Error(w, "claim does not match", http.StatusForbidden)
return
}
w.Write([]byte("authorized with value " + value))
})
// data, err := json.Marshal(tokens)
// if err != nil {
// http.Error(w, err.Error(), http.StatusInternalServerError)
// return
// }
// w.Write(data)
// })
// lis := fmt.Sprintf("127.0.0.1:%s", port)
// log.Printf("listening on http://%s/", lis)
// log.Fatal(http.ListenAndServe(lis, nil))
// }
// func checkToken(w http.ResponseWriter, r *http.Request) (bool, string) {
// token := r.Header.Get("authorization")
// if token == "" {
// http.Error(w, "Auth header missing", http.StatusUnauthorized)
// return false, ""
// }
// return true, token
lis := fmt.Sprintf("127.0.0.1:%s", port)
log.Printf("listening on http://%s/", lis)
log.Fatal(http.ListenAndServe(lis, router))
}
func checkToken(w http.ResponseWriter, r *http.Request) (bool, string) {
auth := r.Header.Get("authorization")
if auth == "" {
http.Error(w, "auth header missing", http.StatusUnauthorized)
return false, ""
}
if !strings.HasPrefix(auth, oidc.PrefixBearer) {
http.Error(w, "invalid header", http.StatusUnauthorized)
return false, ""
}
return true, strings.TrimPrefix(auth, oidc.PrefixBearer)
}