Add OCPP forwarder (#29154)

server/http_ocppforwarder_handler.go

@@ -0,0 +1,45 @@
+package server
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/evcc-io/evcc/charger/ocpp"
+	"github.com/evcc-io/evcc/core/keys"
+	"github.com/evcc-io/evcc/server/db/settings"
+)
+
+// updateOcppForwarderHandler persists the OCPP forwarder rules, restoring masked
+// secrets from the stored rules by station id, and applies them at runtime.
+func updateOcppForwarderHandler(w http.ResponseWriter, r *http.Request) {
+	var rules []ocpp.ForwarderRule
+	if err := json.NewDecoder(r.Body).Decode(&rules); err != nil {
+		jsonError(w, http.StatusBadRequest, err)
+		return
+	}
+
+	// restore masked secrets (password, caCert) from stored rules by station id
+	var old []ocpp.ForwarderRule
+	if err := settings.Json(keys.OcppForwarder, &old); err == nil {
+		stored := make(map[string]ocpp.ForwarderRule, len(old))
+		for _, o := range old {
+			stored[o.StationID] = o
+		}
+		for i := range rules {
+			if o, ok := stored[rules[i].StationID]; ok {
+				if err := mergeMaskedAny(&o, &rules[i]); err != nil {
+					jsonError(w, http.StatusInternalServerError, err)
+					return
+				}
+			}
+		}
+	}
+
+	if err := settings.SetJson(keys.OcppForwarder, rules); err != nil {
+		jsonError(w, http.StatusInternalServerError, err)
+		return
+	}
+	ocpp.ApplyForwarderRules(rules)
+
+	jsonWrite(w, true)
+}