Add tokeninfo endpoint

api/token.go

@@ -0,0 +1,40 @@
+package api
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"github.com/bolkedebruin/rdpgw/security"
+	"log"
+	"net/http"
+)
+
+func (c *Config) TokenInfo(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Invalid request", http.StatusMethodNotAllowed)
+		return
+	}
+
+	tokens, ok := r.URL.Query()["access_token"]
+	if !ok || len(tokens[0]) < 1 {
+		log.Printf("Missing access_token in request")
+		http.Error(w, "access_token missing in request", http.StatusBadRequest)
+		return
+	}
+
+	token := tokens[0]
+
+	info, err := security.UserInfo(context.Background(), token)
+	if err != nil {
+		log.Printf("Token validation failed due to %s", err)
+		http.Error(w, fmt.Sprintf("token validation failed due to %s", err), http.StatusForbidden)
+		return
+	}
+
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	if err = json.NewEncoder(w).Encode(info); err != nil {
+		log.Printf("Cannot encode json due to %s", err)
+		http.Error(w, "cannot encode json", http.StatusInternalServerError)
+		return
+	}
+}