Mikrotik integration (#467)

Allow MikroTik routes as WireGuard backends

README.md

@@ -32,6 +32,7 @@ The configuration portal supports using a database (SQLite, MySQL, MsSQL, or Pos
 * Docker ready
 * Can be used with existing WireGuard setups
 * Support for multiple WireGuard interfaces
+* Supports multiple WireGuard backends (wgctrl or MikroTik [BETA])
 * Peer Expiry Feature
 * Handles route and DNS settings like wg-quick does
 * Exposes Prometheus metrics for monitoring and alerting

cmd/wg-portal/main.go

@@ -50,7 +50,8 @@ func main() {
 	database, err := adapters.NewSqlRepository(rawDb)
 	internal.AssertNoError(err)
 
-	wireGuard := adapters.NewWireGuardRepository()
+	wireGuard, err := wireguard.NewControllerManager(cfg)
+	internal.AssertNoError(err)
 
 	wgQuick := adapters.NewWgQuickRepo()
 
@@ -134,7 +135,7 @@ func main() {
 	apiV0EndpointUsers := handlersV0.NewUserEndpoint(cfg, apiV0Auth, validatorManager, apiV0BackendUsers)
 	apiV0EndpointInterfaces := handlersV0.NewInterfaceEndpoint(cfg, apiV0Auth, validatorManager, apiV0BackendInterfaces)
 	apiV0EndpointPeers := handlersV0.NewPeerEndpoint(cfg, apiV0Auth, validatorManager, apiV0BackendPeers)
-	apiV0EndpointConfig := handlersV0.NewConfigEndpoint(cfg, apiV0Auth)
+	apiV0EndpointConfig := handlersV0.NewConfigEndpoint(cfg, apiV0Auth, wireGuard)
 	apiV0EndpointTest := handlersV0.NewTestEndpoint(apiV0Auth)
 
 	apiFrontend := handlersV0.NewRestApi(apiV0Session,

docs/documentation/configuration/overview.md

@@ -24,6 +24,9 @@ core:
   self_provisioning_allowed: false
   import_existing: true
   restore_state: true
+  
+backend:
+  default: local
 
 advanced:
   log_level: info
@@ -102,6 +105,7 @@ webhook:
 
 Below you will find sections like
 [`core`](#core),
+[`backend`](#backend),
 [`advanced`](#advanced),
 [`database`](#database),
 [`statistics`](#statistics),
@@ -165,6 +169,65 @@ More advanced options are found in the subsequent `Advanced` section.
 
 ---
 
+## Backend
+
+Configuration options for the WireGuard backend, which manages the WireGuard interfaces and peers.
+The current MikroTik backend is in **BETA** and may not support all features.
+
+### `default`
+- **Default:** `local`
+- **Description:** The default backend to use for managing WireGuard interfaces. 
+  Valid options are: `local`, or other backend id's configured in the `mikrotik` section.
+
+### Mikrotik
+
+The `mikrotik` array contains a list of MikroTik backend definitions. Each entry describes how to connect to a MikroTik RouterOS instance that hosts WireGuard interfaces.
+
+Below are the properties for each entry inside `backend.mikrotik`:
+
+#### `id`
+- **Default:** *(empty)*
+- **Description:** A unique identifier for this backend. 
+  This value can be referenced by `backend.default` to use this backend as default.
+  The identifier must be unique across all backends and must not use the reserved keyword `local`.
+
+#### `display_name`
+- **Default:** *(empty)*
+- **Description:** A human-friendly display name for this backend. If omitted, the `id` will be used as the display name.
+
+#### `api_url`
+- **Default:** *(empty)*
+- **Description:** Base URL of the MikroTik REST API, including scheme and path, e.g., `https://10.10.10.10:8729/rest`.
+
+#### `api_user`
+- **Default:** *(empty)*
+- **Description:** Username for authenticating against the MikroTik API.
+  Ensure that the user has sufficient permissions to manage WireGuard interfaces and peers.
+
+#### `api_password`
+- **Default:** *(empty)*
+- **Description:** Password for the specified API user.
+
+#### `api_verify_tls`
+- **Default:** `false`
+- **Description:** Whether to verify the TLS certificate of the MikroTik API endpoint. Set to `false` to allow self-signed certificates (not recommended for production).
+
+#### `api_timeout`
+- **Default:** `30s`
+- **Description:** Timeout for API requests to the MikroTik device. Uses Go duration format (e.g., `10s`, `1m`). If omitted, a default of 30 seconds is used.
+
+#### `concurrency`
+- **Default:** `5`
+- **Description:** Maximum number of concurrent API requests the backend will issue when enumerating interfaces and their details. If `0` or negative, a sane default of `5` is used.
+
+#### `debug`
+- **Default:** `false`
+- **Description:** Enable verbose debug logging for the MikroTik backend.
+
+For more details on configuring the MikroTik backend, see the [Backends](../usage/backends.md) documentation.
+
+---
+
 ## Advanced
 
 Additional or more specialized configuration options for logging and interface creation details.

docs/documentation/usage/backends.md

@@ -0,0 +1,57 @@
+# Backends
+
+WireGuard Portal can manage WireGuard interfaces and peers on different backends. 
+Each backend represents a system where interfaces actually live. 
+You can register multiple backends and choose which one to use per interface. 
+A global default backend determines where newly created interfaces go (unless you explicitly choose another in the UI).
+
+**Supported backends:**
+- **Local** (default): Manages interfaces on the host running WireGuard Portal (Linux WireGuard via wgctrl). Use this when the portal should directly configure wg devices on the same server.
+- **MikroTik** RouterOS (_beta_): Manages interfaces and peers on MikroTik devices via the RouterOS REST API. Use this to control WG interfaces on RouterOS v7+.
+
+How backend selection works:
+- The default backend is configured at `backend.default` (_local_ or the id of a defined MikroTik backend). 
+  New interfaces created in the UI will use this backend by default.
+- Each interface stores its backend. You can select a different backend when creating a new interface.
+
+## Configuring MikroTik backends (RouterOS v7+)
+
+> :warning: The MikroTik backend is currently marked beta. While basic functionality is implemented, some advanced features are not yet implemented or contain bugs. Please test carefully before using in production.
+
+The MikroTik backend uses the [REST API](https://help.mikrotik.com/docs/spaces/ROS/pages/47579162/REST+API) under a base URL ending with /rest. 
+You can register one or more MikroTik devices as backends for a single WireGuard Portal instance.
+
+### Prerequisites on MikroTik:
+- RouterOS v7 with WireGuard support.
+- REST API enabled and reachable over HTTP(S). A typical base URL is https://<router-address>:8729/rest or https://<router-address>/rest depending on your service setup.
+- A dedicated RouterOS user with the following group permissions:
+  - **api** (for logging in via REST API)
+  - **rest-api** (for logging in via REST API)
+  - **read** (to read interface and peer data)
+  - **write** (to create/update interfaces and peers)
+  - **test** (to perform ping checks)
+  - **sensitive** (to read private keys)
+- TLS certificate on the device is recommended. If you use a self-signed certificate during testing, set `api_verify_tls`: _false_ in wg-portal (not recommended for production).
+
+Example WireGuard Portal configuration (config/config.yaml):
+
+```yaml
+backend:
+  # default backend decides where new interfaces are created
+  default: mikrotik-prod
+
+  mikrotik:
+    - id: mikrotik-prod              # unique id, not "local"
+      display_name: RouterOS RB5009  # optional nice name
+      api_url: https://10.10.10.10/rest
+      api_user: wgportal
+      api_password: a-super-secret-password
+      api_verify_tls: true         # set to false only if using self-signed during testing
+      api_timeout: 30s             # maximum request duration
+      concurrency: 5               # limit parallel REST calls to device
+      debug: false                 # verbose logging for this backend
+```
+
+### Known limitations:
+- The MikroTik backend is still in beta. Some features may not work as expected.
+- Not all WireGuard Portal features are supported yet (e.g., no support for interface hooks)

frontend/src/components/InterfaceEditModal.vue

@@ -10,11 +10,13 @@ import isCidr from "is-cidr";
 import {isIP} from 'is-ip';
 import { freshInterface } from '@/helpers/models';
 import {peerStore} from "@/stores/peers";
+import {settingsStore} from "@/stores/settings";
 
 const { t } = useI18n()
 
 const interfaces = interfaceStore()
 const peers = peerStore()
+const settings = settingsStore()
 
 const props = defineProps({
   interfaceId: String,
@@ -48,6 +50,26 @@ const currentTags = ref({
   PeerDefDnsSearch: ""
 })
 const formData = ref(freshInterface())
+const isSaving = ref(false)
+const isDeleting = ref(false)
+const isApplyingDefaults = ref(false)
+
+const isBackendValid = computed(() => {
+  if (!props.visible || !selectedInterface.value) {
+    return true // if modal is not visible or no interface is selected, we don't care about backend validity
+  }
+
+  let backendId = selectedInterface.value.Backend
+
+  let valid = false
+  let availableBackends = settings.Setting('AvailableBackends') || []
+  availableBackends.forEach(backend => {
+    if (backend.Id === backendId) {
+      valid = true
+    }
+  })
+  return valid
+})
 
 // functions
 
@@ -61,6 +83,7 @@ watch(() => props.visible, async (newValue, oldValue) => {
           formData.value.Identifier = interfaces.Prepared.Identifier
           formData.value.DisplayName = interfaces.Prepared.DisplayName
           formData.value.Mode = interfaces.Prepared.Mode
+          formData.value.Backend = interfaces.Prepared.Backend
 
           formData.value.PublicKey = interfaces.Prepared.PublicKey
           formData.value.PrivateKey = interfaces.Prepared.PrivateKey
@@ -99,6 +122,7 @@ watch(() => props.visible, async (newValue, oldValue) => {
           formData.value.Identifier = selectedInterface.value.Identifier
           formData.value.DisplayName = selectedInterface.value.DisplayName
           formData.value.Mode = selectedInterface.value.Mode
+          formData.value.Backend = selectedInterface.value.Backend
 
           formData.value.PublicKey = selectedInterface.value.PublicKey
           formData.value.PrivateKey = selectedInterface.value.PrivateKey
@@ -237,6 +261,8 @@ function handleChangePeerDefDnsSearch(tags) {
 }
 
 async function save() {
+  if (isSaving.value) return
+  isSaving.value = true
   try {
     if (props.interfaceId!=='#NEW#') {
       await interfaces.UpdateInterface(selectedInterface.value.Identifier, formData.value)
@@ -251,6 +277,8 @@ async function save() {
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isSaving.value = false
   }
 }
 
@@ -259,6 +287,8 @@ async function applyPeerDefaults() {
     return; // do nothing for new interfaces
   }
 
+  if (isApplyingDefaults.value) return
+  isApplyingDefaults.value = true
   try {
     await interfaces.ApplyPeerDefaults(selectedInterface.value.Identifier, formData.value)
 
@@ -276,10 +306,14 @@ async function applyPeerDefaults() {
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isApplyingDefaults.value = false
   }
 }
 
 async function del() {
+  if (isDeleting.value) return
+  isDeleting.value = true
   try {
     await interfaces.DeleteInterface(selectedInterface.value.Identifier)
     close()
@@ -290,6 +324,8 @@ async function del() {
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isDeleting.value = false
   }
 }
 
@@ -314,13 +350,22 @@ async function del() {
               <label class="form-label mt-4">{{ $t('modals.interface-edit.identifier.label') }}</label>
               <input v-model="formData.Identifier" class="form-control" :placeholder="$t('modals.interface-edit.identifier.placeholder')" type="text">
             </div>
-            <div class="form-group">
-              <label class="form-label mt-4">{{ $t('modals.interface-edit.mode.label') }}</label>
-              <select v-model="formData.Mode" class="form-select">
-                <option value="server">{{ $t('modals.interface-edit.mode.server') }}</option>
-                <option value="client">{{ $t('modals.interface-edit.mode.client') }}</option>
-                <option value="any">{{ $t('modals.interface-edit.mode.any') }}</option>
-              </select>
+            <div class="row">
+              <div class="form-group col-md-6">
+                <label class="form-label mt-4">{{ $t('modals.interface-edit.mode.label') }}</label>
+                <select v-model="formData.Mode" class="form-select">
+                  <option value="server">{{ $t('modals.interface-edit.mode.server') }}</option>
+                  <option value="client">{{ $t('modals.interface-edit.mode.client') }}</option>
+                  <option value="any">{{ $t('modals.interface-edit.mode.any') }}</option>
+                </select>
+              </div>
+              <div class="form-group col-md-6">
+                <label class="form-label mt-4" for="ifaceBackendSelector">{{ $t('modals.interface-edit.backend.label') }}</label>
+                <select id="ifaceBackendSelector" v-model="formData.Backend" class="form-select" aria-describedby="backendHelp">
+                  <option v-for="backend in settings.Setting('AvailableBackends')" :value="backend.Id">{{ backend.Id === 'local' ? $t(backend.Name) : backend.Name }}</option>
+                </select>
+                <small v-if="!isBackendValid" id="backendHelp" class="form-text text-warning">{{ $t('modals.interface-edit.backend.invalid-label') }}</small>
+              </div>
             </div>
             <div class="form-group">
               <label class="form-label mt-4">{{ $t('modals.interface-edit.display-name.label') }}</label>
@@ -385,12 +430,14 @@ async function del() {
                 <label class="form-label mt-4">{{ $t('modals.interface-edit.mtu.label') }}</label>
                 <input v-model="formData.Mtu" class="form-control" :placeholder="$t('modals.interface-edit.mtu.placeholder')" type="number">
               </div>
-              <div class="form-group col-md-6">
+              <div class="form-group col-md-6" v-if="formData.Backend==='local'">
                 <label class="form-label mt-4">{{ $t('modals.interface-edit.firewall-mark.label') }}</label>
                 <input v-model="formData.FirewallMark" class="form-control" :placeholder="$t('modals.interface-edit.firewall-mark.placeholder')" type="number">
               </div>
+              <div class="form-group col-md-6" v-else>
+              </div>
             </div>
-            <div class="row">
+            <div class="row" v-if="formData.Backend==='local'">
               <div class="form-group col-md-6">
                 <label class="form-label mt-4">{{ $t('modals.interface-edit.routing-table.label') }}</label>
                 <input v-model="formData.RoutingTable" aria-describedby="routingTableHelp" class="form-control" :placeholder="$t('modals.interface-edit.routing-table.placeholder')" type="text">
@@ -530,16 +577,25 @@ async function del() {
           </fieldset>
           <fieldset v-if="props.interfaceId!=='#NEW#'" class="text-end">
             <hr class="mt-4">
-            <button class="btn btn-primary me-1" type="button" @click.prevent="applyPeerDefaults">{{ $t('modals.interface-edit.button-apply-defaults') }}</button>
+            <button class="btn btn-primary me-1" type="button" @click.prevent="applyPeerDefaults" :disabled="isApplyingDefaults">
+              <span v-if="isApplyingDefaults" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+              {{ $t('modals.interface-edit.button-apply-defaults') }}
+            </button>
           </fieldset>
         </div>
       </div>
     </template>
     <template #footer>
       <div class="flex-fill text-start">
-        <button v-if="props.interfaceId!=='#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del">{{ $t('general.delete') }}</button>
+        <button v-if="props.interfaceId!=='#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del" :disabled="isDeleting">
+          <span v-if="isDeleting" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+          {{ $t('general.delete') }}
+        </button>
       </div>
-      <button class="btn btn-primary me-1" type="button" @click.prevent="save">{{ $t('general.save') }}</button>
+      <button class="btn btn-primary me-1" type="button" @click.prevent="save" :disabled="isSaving">
+        <span v-if="isSaving" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+        {{ $t('general.save') }}
+      </button>
       <button class="btn btn-secondary" type="button" @click.prevent="close">{{ $t('general.close') }}</button>
     </template>
   </Modal>

frontend/src/components/PeerEditModal.vue

@@ -73,6 +73,8 @@ const currentTags = ref({
   DnsSearch: ""
 })
 const formData = ref(freshPeer())
+const isSaving = ref(false)
+const isDeleting = ref(false)
 
 // functions
 
@@ -270,6 +272,8 @@ function handleChangeDnsSearch(tags) {
 }
 
 async function save() {
+  if (isSaving.value) return
+  isSaving.value = true
   try {
     if (props.peerId !== '#NEW#') {
       await peers.UpdatePeer(selectedPeer.value.Identifier, formData.value)
@@ -278,26 +282,30 @@ async function save() {
     }
     close()
   } catch (e) {
-    // console.log(e)
     notify({
       title: "Failed to save peer!",
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isSaving.value = false
   }
 }
 
 async function del() {
+  if (isDeleting.value) return
+  isDeleting.value = true
   try {
     await peers.DeletePeer(selectedPeer.value.Identifier)
     close()
   } catch (e) {
-    // console.log(e)
     notify({
       title: "Failed to delete peer!",
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isDeleting.value = false
   }
 }
 
@@ -470,10 +478,15 @@ async function del() {
     </template>
     <template #footer>
       <div class="flex-fill text-start">
-        <button v-if="props.peerId !== '#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del">{{
-          $t('general.delete') }}</button>
+        <button v-if="props.peerId !== '#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del" :disabled="isDeleting">
+          <span v-if="isDeleting" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+          {{ $t('general.delete') }}
+        </button>
       </div>
-      <button class="btn btn-primary me-1" type="button" @click.prevent="save">{{ $t('general.save') }}</button>
+      <button class="btn btn-primary me-1" type="button" @click.prevent="save" :disabled="isSaving">
+        <span v-if="isSaving" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+        {{ $t('general.save') }}
+      </button>
       <button class="btn btn-secondary" type="button" @click.prevent="close">{{ $t('general.close') }}</button>
     </template>
   </Modal>

frontend/src/components/PeerMultiCreateModal.vue

@@ -38,6 +38,7 @@ function freshForm() {
 
 const currentTag = ref("")
 const formData = ref(freshForm())
+const isSaving = ref(false)
 
 const title = computed(() => {
   if (!props.visible) {
@@ -60,12 +61,15 @@ function handleChangeUserIdentifiers(tags) {
 }
 
 async function save() {
+  if (isSaving.value) return
+  isSaving.value = true
   if (formData.value.Identifiers.length === 0) {
     notify({
       title: "Missing Identifiers",
       text: "At least one identifier is required to create a new peer.",
       type: 'error',
     })
+    isSaving.value = false
     return
   }
 
@@ -79,6 +83,8 @@ async function save() {
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isSaving.value = false
   }
 }
 
@@ -108,7 +114,10 @@ async function save() {
       </fieldset>
     </template>
     <template #footer>
-      <button class="btn btn-primary me-1" type="button" @click.prevent="save">{{ $t('general.save') }}</button>
+      <button class="btn btn-primary me-1" type="button" @click.prevent="save" :disabled="isSaving">
+        <span v-if="isSaving" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+        {{ $t('general.save') }}
+      </button>
       <button class="btn btn-secondary" type="button" @click.prevent="close">{{ $t('general.close') }}</button>
     </template>
   </Modal>

frontend/src/components/UserEditModal.vue

@@ -34,6 +34,8 @@ const title = computed(() => {
 })
 
 const formData = ref(freshUser())
+const isSaving = ref(false)
+const isDeleting = ref(false)
 
 const passwordWeak = computed(() => {
   return formData.value.Password && formData.value.Password.length > 0 && formData.value.Password.length < settings.Setting('MinPasswordLength')
@@ -89,6 +91,8 @@ function close() {
 }
 
 async function save() {
+  if (isSaving.value) return
+  isSaving.value = true
   try {
     if (props.userId!=='#NEW#') {
       await users.UpdateUser(selectedUser.value.Identifier, formData.value)
@@ -102,10 +106,14 @@ async function save() {
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isSaving.value = false
   }
 }
 
 async function del() {
+  if (isDeleting.value) return
+  isDeleting.value = true
   try {
     await users.DeleteUser(selectedUser.value.Identifier)
     close()
@@ -115,6 +123,8 @@ async function del() {
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isDeleting.value = false
   }
 }
 
@@ -193,9 +203,15 @@ async function del() {
     </template>
     <template #footer>
       <div class="flex-fill text-start">
-        <button v-if="props.userId!=='#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del">{{ $t('general.delete') }}</button>
+        <button v-if="props.userId!=='#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del" :disabled="isDeleting">
+          <span v-if="isDeleting" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+          {{ $t('general.delete') }}
+        </button>
       </div>
-      <button class="btn btn-primary me-1" type="button" @click.prevent="save" :disabled="!formValid">{{ $t('general.save') }}</button>
+      <button class="btn btn-primary me-1" type="button" @click.prevent="save" :disabled="!formValid || isSaving">
+        <span v-if="isSaving" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+        {{ $t('general.save') }}
+      </button>
       <button class="btn btn-secondary" type="button" @click.prevent="close">{{ $t('general.close') }}</button>
     </template>
   </Modal>

frontend/src/components/UserPeerEditModal.vue

@@ -55,6 +55,8 @@ const title = computed(() => {
 })
 
 const formData = ref(freshPeer())
+const isSaving = ref(false)
+const isDeleting = ref(false)
 
 // functions
 
@@ -163,6 +165,8 @@ function close() {
 }
 
 async function save() {
+  if (isSaving.value) return
+  isSaving.value = true
   try {
     if (props.peerId !== '#NEW#') {
       await peers.UpdatePeer(selectedPeer.value.Identifier, formData.value)
@@ -171,26 +175,30 @@ async function save() {
     }
     close()
   } catch (e) {
-    // console.log(e)
     notify({
       title: "Failed to save peer!",
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isSaving.value = false
   }
 }
 
 async function del() {
+  if (isDeleting.value) return
+  isDeleting.value = true
   try {
     await peers.DeletePeer(selectedPeer.value.Identifier)
     close()
   } catch (e) {
-    // console.log(e)
     notify({
       title: "Failed to delete peer!",
       text: e.toString(),
       type: 'error',
     })
+  } finally {
+    isDeleting.value = false
   }
 }
 
@@ -283,10 +291,15 @@ async function del() {
     </template>
     <template #footer>
       <div class="flex-fill text-start">
-        <button v-if="props.peerId !== '#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del">{{
-          $t('general.delete') }}</button>
+        <button v-if="props.peerId !== '#NEW#'" class="btn btn-danger me-1" type="button" @click.prevent="del" :disabled="isDeleting">
+          <span v-if="isDeleting" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+          {{ $t('general.delete') }}
+        </button>
       </div>
-      <button class="btn btn-primary me-1" type="button" @click.prevent="save">{{ $t('general.save') }}</button>
+      <button class="btn btn-primary me-1" type="button" @click.prevent="save" :disabled="isSaving">
+        <span v-if="isSaving" class="spinner-border spinner-border-sm me-1" role="status" aria-hidden="true"></span>
+        {{ $t('general.save') }}
+      </button>
       <button class="btn btn-secondary" type="button" @click.prevent="close">{{ $t('general.close') }}</button>
     </template>
   </Modal>

frontend/src/helpers/models.js

@@ -5,6 +5,7 @@ export function freshInterface() {
     DisplayName: "",
     Identifier: "",
     Mode: "server",
+    Backend: "local",
 
     PublicKey: "",
     PrivateKey: "",

frontend/src/lang/translations/de.json

@@ -102,7 +102,9 @@
     },
     "interface": {
       "headline": "Schnittstellenstatus für",
-      "mode": "Modus",
+      "backend": "Backend",
+      "unknown-backend": "Unbekannt",
+      "wrong-backend": "Ungültiges Backend, das lokale WireGuard Backend wird stattdessen verwendet!",
       "key": "Öffentlicher Schlüssel",
       "endpoint": "Öffentlicher Endpunkt",
       "port": "Port",
@@ -357,6 +359,11 @@
         "client": "Client-Modus",
         "any": "Unbekannter Modus"
       },
+      "backend": {
+        "label": "Schnittstellenbackend",
+        "invalid-label": "Ursprüngliches Backend ist ungültig, das lokale WireGuard Backend wird stattdessen verwendet!",
+        "local": "Lokales WireGuard Backend"
+      },
       "display-name": {
         "label": "Anzeigename",
         "placeholder": "Der beschreibende Name für die Schnittstelle"

frontend/src/lang/translations/en.json

@@ -102,7 +102,9 @@
     },
     "interface": {
       "headline": "Interface status for",
-      "mode": "mode",
+      "backend": "Backend",
+      "unknown-backend": "Unknown",
+      "wrong-backend": "Invalid backend, using local WireGuard backend instead!",
       "key": "Public Key",
       "endpoint": "Public Endpoint",
       "port": "Listening Port",
@@ -357,6 +359,11 @@
         "client": "Client Mode",
         "any": "Unknown Mode"
       },
+      "backend": {
+        "label": "Interface Backend",
+        "invalid-label": "Original backend is no longer available, using local WireGuard backend instead!",
+        "local": "Local WireGuard Backend"
+      },
       "display-name": {
         "label": "Display Name",
         "placeholder": "The descriptive name for the interface"

frontend/src/lang/translations/fr.json

@@ -99,7 +99,7 @@
     },
     "interface": {
       "headline": "État de l'interface pour",
-      "mode": "mode",
+      "backend": "backend",
       "key": "Clé publique",
       "endpoint": "Point de terminaison public",
       "port": "Port d'écoute",

frontend/src/lang/translations/ko.json

@@ -100,7 +100,7 @@
       },
       "interface": {
         "headline": "인터페이스 상태:",
-        "mode": "모드",
+        "backend": "백엔드",
         "key": "공개 키",
         "endpoint": "공개 엔드포인트",
         "port": "수신 포트",

frontend/src/lang/translations/pt.json

@@ -101,7 +101,7 @@
     },
     "interface": {
       "headline": "Status da interface para",
-      "mode": "modo",
+      "mode": "backend",
       "key": "Chave Pública",
       "endpoint": "Endpoint Público",
       "port": "Porta de Escuta",

frontend/src/lang/translations/ru.json

@@ -99,7 +99,7 @@
     },
     "interface": {
       "headline": "Статус интерфейса для",
-      "mode": "режим",
+      "backend": "бэкэнд",
       "key": "Публичный ключ",
       "endpoint": "Публичная конечная точка",
       "port": "Порт прослушивания",

frontend/src/lang/translations/uk.json

@@ -99,7 +99,7 @@
     },
     "interface": {
       "headline": "Статус інтерфейсу для",
-      "mode": "режим",
+      "backend": "бекенд",
       "key": "Публічний ключ",
       "endpoint": "Публічна кінцева точка",
       "port": "Порт прослуховування",

frontend/src/lang/translations/vi.json

@@ -98,7 +98,7 @@
     },
     "interface": {
       "headline": "Trạng thái giao diện cho",
-      "mode": "chế độ",
+      "backend": "phần sau",
       "key": "Khóa Công khai",
       "endpoint": "Điểm cuối Công khai",
       "port": "Cổng Nghe",

frontend/src/lang/translations/zh.json

@@ -98,7 +98,7 @@
       },
       "interface": {
         "headline": "接口状态",
-        "mode": "模式",
+        "backend": "后端",
         "key": "公钥",
         "endpoint": "公开节点",
         "port": "监听端口",

frontend/src/views/InterfaceView.vue

@@ -5,17 +5,20 @@ import PeerMultiCreateModal from "../components/PeerMultiCreateModal.vue";
 import InterfaceEditModal from "../components/InterfaceEditModal.vue";
 import InterfaceViewModal from "../components/InterfaceViewModal.vue";
 
-import {onMounted, ref} from "vue";
+import {computed, onMounted, ref} from "vue";
 import {peerStore} from "@/stores/peers";
 import {interfaceStore} from "@/stores/interfaces";
 import {notify} from "@kyvg/vue3-notification";
 import {settingsStore} from "@/stores/settings";
 import {humanFileSize} from '@/helpers/utils';
+import {useI18n} from "vue-i18n";
 
 const settings = settingsStore()
 const interfaces = interfaceStore()
 const peers = peerStore()
 
+const { t } = useI18n()
+
 const viewedPeerId = ref("")
 const editPeerId = ref("")
 const multiCreatePeerId = ref("")
@@ -45,6 +48,33 @@ function calculateInterfaceName(id, name) {
   return result
 }
 
+const calculateBackendName = computed(() => {
+  let backendId = interfaces.GetSelected.Backend
+
+  let backendName = t('interfaces.interface.unknown-backend')
+  let availableBackends = settings.Setting('AvailableBackends') || []
+  availableBackends.forEach(backend => {
+    if (backend.Id === backendId) {
+      backendName = backend.Id === 'local' ? t(backend.Name) : backend.Name
+    }
+  })
+  return backendName
+})
+
+const isBackendValid = computed(() => {
+  let backendId = interfaces.GetSelected.Backend
+
+  let valid = false
+  let availableBackends = settings.Setting('AvailableBackends') || []
+  availableBackends.forEach(backend => {
+    if (backend.Id === backendId) {
+      valid = true
+    }
+  })
+  return valid
+})
+
+
 async function download() {
   await interfaces.LoadInterfaceConfig(interfaces.GetSelected.Identifier)
 
@@ -141,7 +171,7 @@ onMounted(async () => {
         <div class="card-header">
           <div class="row">
             <div class="col-12 col-lg-8">
-              {{ $t('interfaces.interface.headline') }} <strong>{{interfaces.GetSelected.Identifier}}</strong> ({{interfaces.GetSelected.Mode}} {{ $t('interfaces.interface.mode') }})
+              {{ $t('interfaces.interface.headline') }} <strong>{{interfaces.GetSelected.Identifier}}</strong> ({{ $t('modals.interface-edit.mode.' + interfaces.GetSelected.Mode )}} | {{ $t('interfaces.interface.backend') + ": " + calculateBackendName }}<span v-if="!isBackendValid" :title="t('interfaces.interface.wrong-backend')" class="ms-1 me-1"><i class="fa-solid fa-triangle-exclamation"></i></span>)
               <span v-if="interfaces.GetSelected.Disabled" class="text-danger"><i class="fa fa-circle-xmark" :title="interfaces.GetSelected.DisabledReason"></i></span>
             </div>
             <div class="col-12 col-lg-4 text-lg-end">

internal/adapters/wgcontroller/local.go

@@ -0,0 +1,864 @@
+package wgcontroller
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"fmt"
+	"io"
+	"log/slog"
+	"os"
+	"os/exec"
+	"strings"
+	"time"
+
+	probing "github.com/prometheus-community/pro-bing"
+	"github.com/vishvananda/netlink"
+	"golang.org/x/sys/unix"
+	"golang.zx2c4.com/wireguard/wgctrl"
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+
+	"github.com/h44z/wg-portal/internal"
+	"github.com/h44z/wg-portal/internal/config"
+	"github.com/h44z/wg-portal/internal/domain"
+	"github.com/h44z/wg-portal/internal/lowlevel"
+)
+
+// region dependencies
+
+// WgCtrlRepo is used to control local WireGuard devices via the wgctrl-go library.
+type WgCtrlRepo interface {
+	io.Closer
+	Devices() ([]*wgtypes.Device, error)
+	Device(name string) (*wgtypes.Device, error)
+	ConfigureDevice(name string, cfg wgtypes.Config) error
+}
+
+// A NetlinkClient is a type which can control a netlink device.
+type NetlinkClient interface {
+	LinkAdd(link netlink.Link) error
+	LinkDel(link netlink.Link) error
+	LinkByName(name string) (netlink.Link, error)
+	LinkSetUp(link netlink.Link) error
+	LinkSetDown(link netlink.Link) error
+	LinkSetMTU(link netlink.Link, mtu int) error
+	AddrReplace(link netlink.Link, addr *netlink.Addr) error
+	AddrAdd(link netlink.Link, addr *netlink.Addr) error
+	AddrList(link netlink.Link) ([]netlink.Addr, error)
+	AddrDel(link netlink.Link, addr *netlink.Addr) error
+	RouteAdd(route *netlink.Route) error
+	RouteDel(route *netlink.Route) error
+	RouteReplace(route *netlink.Route) error
+	RouteList(link netlink.Link, family int) ([]netlink.Route, error)
+	RouteListFiltered(family int, filter *netlink.Route, filterMask uint64) ([]netlink.Route, error)
+	RuleAdd(rule *netlink.Rule) error
+	RuleDel(rule *netlink.Rule) error
+	RuleList(family int) ([]netlink.Rule, error)
+}
+
+// endregion dependencies
+
+type LocalController struct {
+	cfg *config.Config
+
+	wg WgCtrlRepo
+	nl NetlinkClient
+
+	shellCmd              string
+	resolvConfIfacePrefix string
+}
+
+// NewLocalController creates a new local controller instance.
+// This repository is used to interact with the WireGuard kernel or userspace module.
+func NewLocalController(cfg *config.Config) (*LocalController, error) {
+	wg, err := wgctrl.New()
+	if err != nil {
+		return nil, fmt.Errorf("failed to create wgctrl client: %w", err)
+	}
+
+	nl := &lowlevel.NetlinkManager{}
+
+	repo := &LocalController{
+		cfg: cfg,
+
+		wg: wg,
+		nl: nl,
+
+		shellCmd:              "bash", // we only support bash at the moment
+		resolvConfIfacePrefix: "tun.", // WireGuard interfaces have a tun. prefix in resolvconf
+	}
+
+	return repo, nil
+}
+
+func (c LocalController) GetId() domain.InterfaceBackend {
+	return config.LocalBackendName
+}
+
+// region wireguard-related
+
+func (c LocalController) GetInterfaces(_ context.Context) ([]domain.PhysicalInterface, error) {
+	devices, err := c.wg.Devices()
+	if err != nil {
+		return nil, fmt.Errorf("device list error: %w", err)
+	}
+
+	interfaces := make([]domain.PhysicalInterface, 0, len(devices))
+	for _, device := range devices {
+		interfaceModel, err := c.convertWireGuardInterface(device)
+		if err != nil {
+			return nil, fmt.Errorf("interface convert failed for %s: %w", device.Name, err)
+		}
+		interfaces = append(interfaces, interfaceModel)
+	}
+
+	return interfaces, nil
+}
+
+func (c LocalController) GetInterface(_ context.Context, id domain.InterfaceIdentifier) (
+	*domain.PhysicalInterface,
+	error,
+) {
+	return c.getInterface(id)
+}
+
+func (c LocalController) convertWireGuardInterface(device *wgtypes.Device) (domain.PhysicalInterface, error) {
+	// read data from wgctrl interface
+
+	iface := domain.PhysicalInterface{
+		Identifier: domain.InterfaceIdentifier(device.Name),
+		KeyPair: domain.KeyPair{
+			PrivateKey: device.PrivateKey.String(),
+			PublicKey:  device.PublicKey.String(),
+		},
+		ListenPort:    device.ListenPort,
+		Addresses:     nil,
+		Mtu:           0,
+		FirewallMark:  uint32(device.FirewallMark),
+		DeviceUp:      false,
+		ImportSource:  domain.ControllerTypeLocal,
+		DeviceType:    device.Type.String(),
+		BytesUpload:   0,
+		BytesDownload: 0,
+	}
+
+	// read data from netlink interface
+
+	lowLevelInterface, err := c.nl.LinkByName(device.Name)
+	if err != nil {
+		return domain.PhysicalInterface{}, fmt.Errorf("netlink error for %s: %w", device.Name, err)
+	}
+	ipAddresses, err := c.nl.AddrList(lowLevelInterface)
+	if err != nil {
+		return domain.PhysicalInterface{}, fmt.Errorf("ip read error for %s: %w", device.Name, err)
+	}
+
+	for _, addr := range ipAddresses {
+		iface.Addresses = append(iface.Addresses, domain.CidrFromNetlinkAddr(addr))
+	}
+	iface.Mtu = lowLevelInterface.Attrs().MTU
+	iface.DeviceUp = lowLevelInterface.Attrs().OperState == netlink.OperUnknown // wg only supports unknown
+	if stats := lowLevelInterface.Attrs().Statistics; stats != nil {
+		iface.BytesUpload = stats.TxBytes
+		iface.BytesDownload = stats.RxBytes
+	}
+
+	return iface, nil
+}
+
+func (c LocalController) GetPeers(_ context.Context, deviceId domain.InterfaceIdentifier) (
+	[]domain.PhysicalPeer,
+	error,
+) {
+	device, err := c.wg.Device(string(deviceId))
+	if err != nil {
+		return nil, fmt.Errorf("device error: %w", err)
+	}
+
+	peers := make([]domain.PhysicalPeer, 0, len(device.Peers))
+	for _, peer := range device.Peers {
+		peerModel, err := c.convertWireGuardPeer(&peer)
+		if err != nil {
+			return nil, fmt.Errorf("peer convert failed for %v: %w", peer.PublicKey, err)
+		}
+		peers = append(peers, peerModel)
+	}
+
+	return peers, nil
+}
+
+func (c LocalController) convertWireGuardPeer(peer *wgtypes.Peer) (domain.PhysicalPeer, error) {
+	peerModel := domain.PhysicalPeer{
+		Identifier: domain.PeerIdentifier(peer.PublicKey.String()),
+		Endpoint:   "",
+		AllowedIPs: nil,
+		KeyPair: domain.KeyPair{
+			PublicKey: peer.PublicKey.String(),
+		},
+		PresharedKey:        "",
+		PersistentKeepalive: int(peer.PersistentKeepaliveInterval.Seconds()),
+		LastHandshake:       peer.LastHandshakeTime,
+		ProtocolVersion:     peer.ProtocolVersion,
+		BytesUpload:         uint64(peer.ReceiveBytes),
+		BytesDownload:       uint64(peer.TransmitBytes),
+		ImportSource:        domain.ControllerTypeLocal,
+	}
+
+	// Set local extras - local peers are never disabled in the kernel
+	peerModel.SetExtras(domain.LocalPeerExtras{
+		Disabled: false,
+	})
+
+	for _, addr := range peer.AllowedIPs {
+		peerModel.AllowedIPs = append(peerModel.AllowedIPs, domain.CidrFromIpNet(addr))
+	}
+	if peer.Endpoint != nil {
+		peerModel.Endpoint = peer.Endpoint.String()
+	}
+	if peer.PresharedKey != (wgtypes.Key{}) {
+		peerModel.PresharedKey = domain.PreSharedKey(peer.PresharedKey.String())
+	}
+
+	return peerModel, nil
+}
+
+func (c LocalController) SaveInterface(
+	_ context.Context,
+	id domain.InterfaceIdentifier,
+	updateFunc func(pi *domain.PhysicalInterface) (*domain.PhysicalInterface, error),
+) error {
+	physicalInterface, err := c.getOrCreateInterface(id)
+	if err != nil {
+		return err
+	}
+
+	if updateFunc != nil {
+		physicalInterface, err = updateFunc(physicalInterface)
+		if err != nil {
+			return err
+		}
+	}
+
+	if err := c.updateLowLevelInterface(physicalInterface); err != nil {
+		return err
+	}
+	if err := c.updateWireGuardInterface(physicalInterface); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c LocalController) getOrCreateInterface(id domain.InterfaceIdentifier) (*domain.PhysicalInterface, error) {
+	device, err := c.getInterface(id)
+	if err == nil {
+		return device, nil // interface exists
+	}
+	if !errors.Is(err, os.ErrNotExist) {
+		return nil, fmt.Errorf("device error: %w", err) // unknown error
+	}
+
+	// create new device
+	if err := c.createLowLevelInterface(id); err != nil {
+		return nil, err
+	}
+
+	device, err = c.getInterface(id)
+	return device, err
+}
+
+func (c LocalController) getInterface(id domain.InterfaceIdentifier) (*domain.PhysicalInterface, error) {
+	device, err := c.wg.Device(string(id))
+	if err != nil {
+		return nil, err
+	}
+
+	pi, err := c.convertWireGuardInterface(device)
+	return &pi, err
+}
+
+func (c LocalController) createLowLevelInterface(id domain.InterfaceIdentifier) error {
+	link := &netlink.GenericLink{
+		LinkAttrs: netlink.LinkAttrs{
+			Name: string(id),
+		},
+		LinkType: "wireguard",
+	}
+	err := c.nl.LinkAdd(link)
+	if err != nil {
+		return fmt.Errorf("link add failed: %w", err)
+	}
+
+	return nil
+}
+
+func (c LocalController) updateLowLevelInterface(pi *domain.PhysicalInterface) error {
+	link, err := c.nl.LinkByName(string(pi.Identifier))
+	if err != nil {
+		return err
+	}
+	if pi.Mtu != 0 {
+		if err := c.nl.LinkSetMTU(link, pi.Mtu); err != nil {
+			return fmt.Errorf("mtu error: %w", err)
+		}
+	}
+
+	for _, addr := range pi.Addresses {
+		err := c.nl.AddrReplace(link, addr.NetlinkAddr())
+		if err != nil {
+			return fmt.Errorf("failed to set ip %s: %w", addr.String(), err)
+		}
+	}
+
+	// Remove unwanted IP addresses
+	rawAddresses, err := c.nl.AddrList(link)
+	if err != nil {
+		return fmt.Errorf("failed to fetch interface ips: %w", err)
+	}
+	for _, rawAddr := range rawAddresses {
+		netlinkAddr := domain.CidrFromNetlinkAddr(rawAddr)
+		remove := true
+		for _, addr := range pi.Addresses {
+			if addr == netlinkAddr {
+				remove = false
+				break
+			}
+		}
+
+		if !remove {
+			continue
+		}
+
+		err := c.nl.AddrDel(link, &rawAddr)
+		if err != nil {
+			return fmt.Errorf("failed to remove deprecated ip %s: %w", netlinkAddr.String(), err)
+		}
+	}
+
+	// Update link state
+	if pi.DeviceUp {
+		if err := c.nl.LinkSetUp(link); err != nil {
+			return fmt.Errorf("failed to bring up device: %w", err)
+		}
+	} else {
+		if err := c.nl.LinkSetDown(link); err != nil {
+			return fmt.Errorf("failed to bring down device: %w", err)
+		}
+	}
+
+	return nil
+}
+
+func (c LocalController) updateWireGuardInterface(pi *domain.PhysicalInterface) error {
+	pKey, err := wgtypes.NewKey(pi.KeyPair.GetPrivateKeyBytes())
+	if err != nil {
+		return err
+	}
+
+	var fwMark *int
+	if pi.FirewallMark != 0 {
+		intFwMark := int(pi.FirewallMark)
+		fwMark = &intFwMark
+	}
+	err = c.wg.ConfigureDevice(string(pi.Identifier), wgtypes.Config{
+		PrivateKey:   &pKey,
+		ListenPort:   &pi.ListenPort,
+		FirewallMark: fwMark,
+		ReplacePeers: false,
+	})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c LocalController) DeleteInterface(_ context.Context, id domain.InterfaceIdentifier) error {
+	if err := c.deleteLowLevelInterface(id); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c LocalController) deleteLowLevelInterface(id domain.InterfaceIdentifier) error {
+	link, err := c.nl.LinkByName(string(id))
+	if err != nil {
+		var linkNotFoundError netlink.LinkNotFoundError
+		if errors.As(err, &linkNotFoundError) {
+			return nil // ignore not found error
+		}
+		return fmt.Errorf("unable to find low level interface: %w", err)
+	}
+
+	err = c.nl.LinkDel(link)
+	if err != nil {
+		return fmt.Errorf("failed to delete low level interface: %w", err)
+	}
+
+	return nil
+}
+
+func (c LocalController) SavePeer(
+	_ context.Context,
+	deviceId domain.InterfaceIdentifier,
+	id domain.PeerIdentifier,
+	updateFunc func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error),
+) error {
+	physicalPeer, err := c.getOrCreatePeer(deviceId, id)
+	if err != nil {
+		return err
+	}
+
+	physicalPeer, err = updateFunc(physicalPeer)
+	if err != nil {
+		return err
+	}
+
+	// Check if the peer is disabled by looking at the backend extras
+	// For local controller, disabled peers should be deleted
+	if physicalPeer.GetExtras() != nil {
+		switch extras := physicalPeer.GetExtras().(type) {
+		case domain.LocalPeerExtras:
+			if extras.Disabled {
+				// Delete the peer instead of updating it
+				return c.deletePeer(deviceId, id)
+			}
+		}
+	}
+
+	if err := c.updatePeer(deviceId, physicalPeer); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c LocalController) getOrCreatePeer(deviceId domain.InterfaceIdentifier, id domain.PeerIdentifier) (
+	*domain.PhysicalPeer,
+	error,
+) {
+	peer, err := c.getPeer(deviceId, id)
+	if err == nil {
+		return peer, nil // peer exists
+	}
+	if !errors.Is(err, os.ErrNotExist) {
+		return nil, fmt.Errorf("peer error: %w", err) // unknown error
+	}
+
+	// create new peer
+	err = c.wg.ConfigureDevice(string(deviceId), wgtypes.Config{
+		Peers: []wgtypes.PeerConfig{
+			{
+				PublicKey: id.ToPublicKey(),
+			},
+		},
+	})
+	if err != nil {
+		return nil, fmt.Errorf("peer create error for %s: %w", id.ToPublicKey(), err)
+	}
+
+	peer, err = c.getPeer(deviceId, id)
+	if err != nil {
+		return nil, fmt.Errorf("peer error after create: %w", err)
+	}
+	return peer, nil
+}
+
+func (c LocalController) getPeer(deviceId domain.InterfaceIdentifier, id domain.PeerIdentifier) (
+	*domain.PhysicalPeer,
+	error,
+) {
+	if !id.IsPublicKey() {
+		return nil, errors.New("invalid public key")
+	}
+
+	device, err := c.wg.Device(string(deviceId))
+	if err != nil {
+		return nil, err
+	}
+
+	publicKey := id.ToPublicKey()
+	for _, peer := range device.Peers {
+		if peer.PublicKey != publicKey {
+			continue
+		}
+
+		peerModel, err := c.convertWireGuardPeer(&peer)
+		return &peerModel, err
+	}
+
+	return nil, os.ErrNotExist
+}
+
+func (c LocalController) updatePeer(deviceId domain.InterfaceIdentifier, pp *domain.PhysicalPeer) error {
+	cfg := wgtypes.PeerConfig{
+		PublicKey:                   pp.GetPublicKey(),
+		Remove:                      false,
+		UpdateOnly:                  true,
+		PresharedKey:                pp.GetPresharedKey(),
+		Endpoint:                    pp.GetEndpointAddress(),
+		PersistentKeepaliveInterval: pp.GetPersistentKeepaliveTime(),
+		ReplaceAllowedIPs:           true,
+		AllowedIPs:                  pp.GetAllowedIPs(),
+	}
+
+	err := c.wg.ConfigureDevice(string(deviceId), wgtypes.Config{ReplacePeers: false, Peers: []wgtypes.PeerConfig{cfg}})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c LocalController) DeletePeer(
+	_ context.Context,
+	deviceId domain.InterfaceIdentifier,
+	id domain.PeerIdentifier,
+) error {
+	if !id.IsPublicKey() {
+		return errors.New("invalid public key")
+	}
+
+	err := c.deletePeer(deviceId, id)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c LocalController) deletePeer(deviceId domain.InterfaceIdentifier, id domain.PeerIdentifier) error {
+	cfg := wgtypes.PeerConfig{
+		PublicKey: id.ToPublicKey(),
+		Remove:    true,
+	}
+
+	err := c.wg.ConfigureDevice(string(deviceId), wgtypes.Config{ReplacePeers: false, Peers: []wgtypes.PeerConfig{cfg}})
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// endregion wireguard-related
+
+// region wg-quick-related
+
+func (c LocalController) ExecuteInterfaceHook(id domain.InterfaceIdentifier, hookCmd string) error {
+	if hookCmd == "" {
+		return nil
+	}
+
+	slog.Debug("executing interface hook", "interface", id, "hook", hookCmd)
+	err := c.exec(hookCmd, id)
+	if err != nil {
+		return fmt.Errorf("failed to exec hook: %w", err)
+	}
+
+	return nil
+}
+
+func (c LocalController) SetDNS(id domain.InterfaceIdentifier, dnsStr, dnsSearchStr string) error {
+	if dnsStr == "" && dnsSearchStr == "" {
+		return nil
+	}
+
+	dnsServers := internal.SliceString(dnsStr)
+	dnsSearchDomains := internal.SliceString(dnsSearchStr)
+
+	dnsCommand := "resolvconf -a %resPref%i -m 0 -x"
+	dnsCommandInput := make([]string, 0, len(dnsServers)+len(dnsSearchDomains))
+
+	for _, dnsServer := range dnsServers {
+		dnsCommandInput = append(dnsCommandInput, fmt.Sprintf("nameserver %s", dnsServer))
+	}
+	for _, searchDomain := range dnsSearchDomains {
+		dnsCommandInput = append(dnsCommandInput, fmt.Sprintf("search %s", searchDomain))
+	}
+
+	err := c.exec(dnsCommand, id, dnsCommandInput...)
+	if err != nil {
+		return fmt.Errorf(
+			"failed to set dns settings (is resolvconf available?, for systemd create this symlink: ln -s /usr/bin/resolvectl /usr/local/bin/resolvconf): %w",
+			err,
+		)
+	}
+
+	return nil
+}
+
+func (c LocalController) UnsetDNS(id domain.InterfaceIdentifier) error {
+	dnsCommand := "resolvconf -d %resPref%i -f"
+
+	err := c.exec(dnsCommand, id)
+	if err != nil {
+		return fmt.Errorf("failed to unset dns settings: %w", err)
+	}
+
+	return nil
+}
+
+func (c LocalController) replaceCommandPlaceHolders(command string, interfaceId domain.InterfaceIdentifier) string {
+	command = strings.ReplaceAll(command, "%resPref", c.resolvConfIfacePrefix)
+	return strings.ReplaceAll(command, "%i", string(interfaceId))
+}
+
+func (c LocalController) exec(command string, interfaceId domain.InterfaceIdentifier, stdin ...string) error {
+	commandWithInterfaceName := c.replaceCommandPlaceHolders(command, interfaceId)
+	cmd := exec.Command(c.shellCmd, "-ce", commandWithInterfaceName)
+	if len(stdin) > 0 {
+		b := &bytes.Buffer{}
+		for _, ln := range stdin {
+			if _, err := fmt.Fprint(b, ln); err != nil {
+				return err
+			}
+		}
+		cmd.Stdin = b
+	}
+	out, err := cmd.CombinedOutput() // execute and wait for output
+	if err != nil {
+		return fmt.Errorf("failed to exexute shell command %s: %w", commandWithInterfaceName, err)
+	}
+	slog.Debug("executed shell command",
+		"command", commandWithInterfaceName,
+		"output", string(out))
+	return nil
+}
+
+// endregion wg-quick-related
+
+// region routing-related
+
+func (c LocalController) SyncRouteRules(_ context.Context, rules []domain.RouteRule) error {
+	// update fwmark rules
+	if err := c.setFwMarkRules(rules); err != nil {
+		return err
+	}
+
+	// update main rule
+	if err := c.setMainRule(rules); err != nil {
+		return err
+	}
+
+	// cleanup old main rules
+	if err := c.cleanupMainRule(rules); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c LocalController) setFwMarkRules(rules []domain.RouteRule) error {
+	for _, rule := range rules {
+		existingRules, err := c.nl.RuleList(int(rule.IpFamily))
+		if err != nil {
+			return fmt.Errorf("failed to get existing rules for family %s: %w", rule.IpFamily, err)
+		}
+
+		ruleExists := false
+		for _, existingRule := range existingRules {
+			if rule.FwMark == existingRule.Mark && rule.Table == existingRule.Table {
+				ruleExists = true
+				break
+			}
+		}
+
+		if ruleExists {
+			continue // rule already exists, no need to recreate it
+		}
+
+		// create a missing rule
+		if err := c.nl.RuleAdd(&netlink.Rule{
+			Family:            int(rule.IpFamily),
+			Table:             rule.Table,
+			Mark:              rule.FwMark,
+			Invert:            true,
+			SuppressIfgroup:   -1,
+			SuppressPrefixlen: -1,
+			Priority:          c.getRulePriority(existingRules),
+			Mask:              nil,
+			Goto:              -1,
+			Flow:              -1,
+		}); err != nil {
+			return fmt.Errorf("failed to setup %s rule for fwmark %d and table %d: %w",
+				rule.IpFamily, rule.FwMark, rule.Table, err)
+		}
+	}
+	return nil
+}
+
+func (c LocalController) getRulePriority(existingRules []netlink.Rule) int {
+	prio := 32700 // linux main rule has a priority of 32766
+	for {
+		isFresh := true
+		for _, existingRule := range existingRules {
+			if existingRule.Priority == prio {
+				isFresh = false
+				break
+			}
+		}
+		if isFresh {
+			break
+		} else {
+			prio--
+		}
+	}
+	return prio
+}
+
+func (c LocalController) setMainRule(rules []domain.RouteRule) error {
+	var family domain.IpFamily
+	shouldHaveMainRule := false
+	for _, rule := range rules {
+		family = rule.IpFamily
+		if rule.HasDefault == true {
+			shouldHaveMainRule = true
+			break
+		}
+	}
+	if !shouldHaveMainRule {
+		return nil
+	}
+
+	existingRules, err := c.nl.RuleList(int(family))
+	if err != nil {
+		return fmt.Errorf("failed to get existing rules for family %s: %w", family, err)
+	}
+
+	ruleExists := false
+	for _, existingRule := range existingRules {
+		if existingRule.Table == unix.RT_TABLE_MAIN && existingRule.SuppressPrefixlen == 0 {
+			ruleExists = true
+			break
+		}
+	}
+
+	if ruleExists {
+		return nil // rule already exists, skip re-creation
+	}
+
+	if err := c.nl.RuleAdd(&netlink.Rule{
+		Family:            int(family),
+		Table:             unix.RT_TABLE_MAIN,
+		SuppressIfgroup:   -1,
+		SuppressPrefixlen: 0,
+		Priority:          c.getMainRulePriority(existingRules),
+		Mark:              0,
+		Mask:              nil,
+		Goto:              -1,
+		Flow:              -1,
+	}); err != nil {
+		return fmt.Errorf("failed to setup rule for main table: %w", err)
+	}
+
+	return nil
+}
+
+func (c LocalController) getMainRulePriority(existingRules []netlink.Rule) int {
+	priority := c.cfg.Advanced.RulePrioOffset
+	for {
+		isFresh := true
+		for _, existingRule := range existingRules {
+			if existingRule.Priority == priority {
+				isFresh = false
+				break
+			}
+		}
+		if isFresh {
+			break
+		} else {
+			priority++
+		}
+	}
+	return priority
+}
+
+func (c LocalController) cleanupMainRule(rules []domain.RouteRule) error {
+	var family domain.IpFamily
+	for _, rule := range rules {
+		family = rule.IpFamily
+		break
+	}
+
+	existingRules, err := c.nl.RuleList(int(family))
+	if err != nil {
+		return fmt.Errorf("failed to get existing rules for family %s: %w", family, err)
+	}
+
+	shouldHaveMainRule := false
+	for _, rule := range rules {
+		if rule.HasDefault == true {
+			shouldHaveMainRule = true
+			break
+		}
+	}
+
+	mainRules := 0
+	for _, existingRule := range existingRules {
+		if existingRule.Table == unix.RT_TABLE_MAIN && existingRule.SuppressPrefixlen == 0 {
+			mainRules++
+		}
+	}
+
+	removalCount := 0
+	if mainRules > 1 {
+		removalCount = mainRules - 1 // we only want one single rule
+	}
+	if !shouldHaveMainRule {
+		removalCount = mainRules
+	}
+
+	for _, existingRule := range existingRules {
+		if existingRule.Table == unix.RT_TABLE_MAIN && existingRule.SuppressPrefixlen == 0 {
+			if removalCount > 0 {
+				existingRule.Family = int(family) // set family, somehow the RuleList method does not populate the family field
+				if err := c.nl.RuleDel(&existingRule); err != nil {
+					return fmt.Errorf("failed to delete main rule: %w", err)
+				}
+				removalCount--
+			}
+		}
+	}
+
+	return nil
+}
+
+func (c LocalController) DeleteRouteRules(_ context.Context, rules []domain.RouteRule) error {
+	// TODO implement me
+	panic("implement me")
+}
+
+// endregion routing-related
+
+// region statistics-related
+
+func (c LocalController) PingAddresses(
+	ctx context.Context,
+	addr string,
+) (*domain.PingerResult, error) {
+	pinger, err := probing.NewPinger(addr)
+	if err != nil {
+		return nil, fmt.Errorf("failed to instantiate pinger for %s: %w", addr, err)
+	}
+
+	checkCount := 1
+	pinger.SetPrivileged(!c.cfg.Statistics.PingUnprivileged)
+	pinger.Count = checkCount
+	pinger.Timeout = 2 * time.Second
+	err = pinger.RunWithContext(ctx) // Blocks until finished.
+	if err != nil {
+		return nil, fmt.Errorf("failed to ping %s: %w", addr, err)
+	}
+
+	stats := pinger.Statistics()
+
+	return &domain.PingerResult{
+		PacketsRecv: stats.PacketsRecv,
+		PacketsSent: stats.PacketsSent,
+		Rtts:        stats.Rtts,
+	}, nil
+}
+
+// endregion statistics-related

internal/adapters/wgcontroller/mikrotik.go

@@ -0,0 +1,829 @@
+package wgcontroller
+
+import (
+	"context"
+	"fmt"
+	"slices"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"log/slog"
+
+	"github.com/h44z/wg-portal/internal/config"
+	"github.com/h44z/wg-portal/internal/domain"
+	"github.com/h44z/wg-portal/internal/lowlevel"
+)
+
+type MikrotikController struct {
+	coreCfg *config.Config
+	cfg     *config.BackendMikrotik
+
+	client *lowlevel.MikrotikApiClient
+
+	// Add mutexes to prevent race conditions
+	interfaceMutexes sync.Map // map[domain.InterfaceIdentifier]*sync.Mutex
+	peerMutexes      sync.Map // map[domain.PeerIdentifier]*sync.Mutex
+}
+
+func NewMikrotikController(coreCfg *config.Config, cfg *config.BackendMikrotik) (*MikrotikController, error) {
+	client, err := lowlevel.NewMikrotikApiClient(coreCfg, cfg)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create Mikrotik API client: %w", err)
+	}
+
+	return &MikrotikController{
+		coreCfg: coreCfg,
+		cfg:     cfg,
+
+		client: client,
+
+		interfaceMutexes: sync.Map{},
+		peerMutexes:      sync.Map{},
+	}, nil
+}
+
+func (c *MikrotikController) GetId() domain.InterfaceBackend {
+	return domain.InterfaceBackend(c.cfg.Id)
+}
+
+// getInterfaceMutex returns a mutex for the given interface to prevent concurrent modifications
+func (c *MikrotikController) getInterfaceMutex(id domain.InterfaceIdentifier) *sync.Mutex {
+	mutex, _ := c.interfaceMutexes.LoadOrStore(id, &sync.Mutex{})
+	return mutex.(*sync.Mutex)
+}
+
+// getPeerMutex returns a mutex for the given peer to prevent concurrent modifications
+func (c *MikrotikController) getPeerMutex(id domain.PeerIdentifier) *sync.Mutex {
+	mutex, _ := c.peerMutexes.LoadOrStore(id, &sync.Mutex{})
+	return mutex.(*sync.Mutex)
+}
+
+// region wireguard-related
+
+func (c *MikrotikController) GetInterfaces(ctx context.Context) ([]domain.PhysicalInterface, error) {
+	wgReply := c.client.Query(ctx, "/interface/wireguard", &lowlevel.MikrotikRequestOptions{
+		PropList: []string{
+			".id", "name", "public-key", "private-key", "listen-port", "mtu", "disabled", "running", "comment",
+		},
+	})
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return nil, fmt.Errorf("failed to query interfaces: %v", wgReply.Error)
+	}
+
+	// Parallelize loading of interface details to speed up overall latency.
+	// Use a bounded semaphore to avoid overloading the MikroTik device.
+	maxConcurrent := c.cfg.GetConcurrency()
+	sem := make(chan struct{}, maxConcurrent)
+
+	interfaces := make([]domain.PhysicalInterface, 0, len(wgReply.Data))
+	var mu sync.Mutex
+	var wgWait sync.WaitGroup
+	var firstErr error
+	ctx2, cancel := context.WithCancel(ctx)
+	defer cancel()
+
+	for _, wgObj := range wgReply.Data {
+		wgWait.Add(1)
+		sem <- struct{}{} // block if more than maxConcurrent requests are processing
+		go func(wg lowlevel.GenericJsonObject) {
+			defer wgWait.Done()
+			defer func() { <-sem }() // read from the semaphore and make space for the next entry
+			if firstErr != nil {
+				return
+			}
+			pi, err := c.loadInterfaceData(ctx2, wg)
+			if err != nil {
+				mu.Lock()
+				if firstErr == nil {
+					firstErr = err
+					cancel()
+				}
+				mu.Unlock()
+				return
+			}
+			mu.Lock()
+			interfaces = append(interfaces, *pi)
+			mu.Unlock()
+		}(wgObj)
+	}
+
+	wgWait.Wait()
+	if firstErr != nil {
+		return nil, firstErr
+	}
+
+	return interfaces, nil
+}
+
+func (c *MikrotikController) GetInterface(ctx context.Context, id domain.InterfaceIdentifier) (
+	*domain.PhysicalInterface,
+	error,
+) {
+	wgReply := c.client.Query(ctx, "/interface/wireguard", &lowlevel.MikrotikRequestOptions{
+		PropList: []string{
+			".id", "name", "public-key", "private-key", "listen-port", "mtu", "disabled", "running",
+		},
+		Filters: map[string]string{
+			"name": string(id),
+		},
+	})
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return nil, fmt.Errorf("failed to query interface %s: %v", id, wgReply.Error)
+	}
+
+	if len(wgReply.Data) == 0 {
+		return nil, fmt.Errorf("interface %s not found", id)
+	}
+
+	return c.loadInterfaceData(ctx, wgReply.Data[0])
+}
+
+func (c *MikrotikController) loadInterfaceData(
+	ctx context.Context,
+	wireGuardObj lowlevel.GenericJsonObject,
+) (*domain.PhysicalInterface, error) {
+	deviceId := wireGuardObj.GetString(".id")
+	deviceName := wireGuardObj.GetString("name")
+	ifaceReply := c.client.Get(ctx, "/interface/"+deviceId, &lowlevel.MikrotikRequestOptions{
+		PropList: []string{
+			"name", "rx-byte", "tx-byte",
+		},
+	})
+	if ifaceReply.Status != lowlevel.MikrotikApiStatusOk {
+		return nil, fmt.Errorf("failed to query interface %s: %v", deviceId, ifaceReply.Error)
+	}
+
+	ipv4, ipv6, err := c.loadIpAddresses(ctx, deviceName)
+	if err != nil {
+		return nil, fmt.Errorf("failed to query IP addresses for interface %s: %v", deviceId, err)
+	}
+	addresses := c.convertIpAddresses(ipv4, ipv6)
+
+	interfaceModel, err := c.convertWireGuardInterface(wireGuardObj, ifaceReply.Data, addresses)
+	if err != nil {
+		return nil, fmt.Errorf("interface convert failed for %s: %w", deviceName, err)
+	}
+	return &interfaceModel, nil
+}
+
+func (c *MikrotikController) loadIpAddresses(
+	ctx context.Context,
+	deviceName string,
+) (ipv4 []lowlevel.GenericJsonObject, ipv6 []lowlevel.GenericJsonObject, err error) {
+	// Query IPv4 and IPv6 addresses in parallel to reduce latency.
+	var (
+		v4    []lowlevel.GenericJsonObject
+		v6    []lowlevel.GenericJsonObject
+		v4Err error
+		v6Err error
+		wg    sync.WaitGroup
+	)
+	wg.Add(2)
+
+	go func() {
+		defer wg.Done()
+		addrV4Reply := c.client.Query(ctx, "/ip/address", &lowlevel.MikrotikRequestOptions{
+			PropList: []string{
+				".id", "address", "network",
+			},
+			Filters: map[string]string{
+				"interface": deviceName,
+				"dynamic":   "false", // we only want static addresses
+				"disabled":  "false", // we only want addresses that are not disabled
+			},
+		})
+		if addrV4Reply.Status != lowlevel.MikrotikApiStatusOk {
+			v4Err = fmt.Errorf("failed to query IPv4 addresses for interface %s: %v", deviceName, addrV4Reply.Error)
+			return
+		}
+		v4 = addrV4Reply.Data
+	}()
+
+	go func() {
+		defer wg.Done()
+		addrV6Reply := c.client.Query(ctx, "/ipv6/address", &lowlevel.MikrotikRequestOptions{
+			PropList: []string{
+				".id", "address", "network",
+			},
+			Filters: map[string]string{
+				"interface": deviceName,
+				"dynamic":   "false", // we only want static addresses
+				"disabled":  "false", // we only want addresses that are not disabled
+			},
+		})
+		if addrV6Reply.Status != lowlevel.MikrotikApiStatusOk {
+			v6Err = fmt.Errorf("failed to query IPv6 addresses for interface %s: %v", deviceName, addrV6Reply.Error)
+			return
+		}
+		v6 = addrV6Reply.Data
+	}()
+
+	wg.Wait()
+	if v4Err != nil {
+		return nil, nil, v4Err
+	}
+	if v6Err != nil {
+		return nil, nil, v6Err
+	}
+
+	return v4, v6, nil
+}
+
+func (c *MikrotikController) convertIpAddresses(
+	ipv4, ipv6 []lowlevel.GenericJsonObject,
+) []domain.Cidr {
+	addresses := make([]domain.Cidr, 0, len(ipv4)+len(ipv6))
+	for _, addr := range append(ipv4, ipv6...) {
+		addrStr := addr.GetString("address")
+		if addrStr == "" {
+			continue
+		}
+		cidr, err := domain.CidrFromString(addrStr)
+		if err != nil {
+			continue
+		}
+
+		addresses = append(addresses, cidr)
+	}
+
+	return addresses
+}
+
+func (c *MikrotikController) convertWireGuardInterface(
+	wg, iface lowlevel.GenericJsonObject,
+	addresses []domain.Cidr,
+) (
+	domain.PhysicalInterface,
+	error,
+) {
+	pi := domain.PhysicalInterface{
+		Identifier: domain.InterfaceIdentifier(wg.GetString("name")),
+		KeyPair: domain.KeyPair{
+			PrivateKey: wg.GetString("private-key"),
+			PublicKey:  wg.GetString("public-key"),
+		},
+		ListenPort:    wg.GetInt("listen-port"),
+		Addresses:     addresses,
+		Mtu:           wg.GetInt("mtu"),
+		FirewallMark:  0,
+		DeviceUp:      wg.GetBool("running"),
+		ImportSource:  domain.ControllerTypeMikrotik,
+		DeviceType:    domain.ControllerTypeMikrotik,
+		BytesUpload:   uint64(iface.GetInt("tx-byte")),
+		BytesDownload: uint64(iface.GetInt("rx-byte")),
+	}
+
+	pi.SetExtras(domain.MikrotikInterfaceExtras{
+		Id:       wg.GetString(".id"),
+		Comment:  wg.GetString("comment"),
+		Disabled: wg.GetBool("disabled"),
+	})
+
+	return pi, nil
+}
+
+func (c *MikrotikController) GetPeers(ctx context.Context, deviceId domain.InterfaceIdentifier) (
+	[]domain.PhysicalPeer,
+	error,
+) {
+	wgReply := c.client.Query(ctx, "/interface/wireguard/peers", &lowlevel.MikrotikRequestOptions{
+		PropList: []string{
+			".id", "name", "allowed-address", "client-address", "client-endpoint", "client-keepalive", "comment",
+			"current-endpoint-address", "current-endpoint-port", "last-handshake", "persistent-keepalive",
+			"public-key", "private-key", "preshared-key", "mtu", "disabled", "rx", "tx", "responder", "client-dns",
+		},
+		Filters: map[string]string{
+			"interface": string(deviceId),
+		},
+	})
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return nil, fmt.Errorf("failed to query peers for %s: %v", deviceId, wgReply.Error)
+	}
+
+	if len(wgReply.Data) == 0 {
+		return nil, nil
+	}
+
+	peers := make([]domain.PhysicalPeer, 0, len(wgReply.Data))
+	for _, peer := range wgReply.Data {
+		peerModel, err := c.convertWireGuardPeer(peer)
+		if err != nil {
+			return nil, fmt.Errorf("peer convert failed for %v: %w", peer.GetString("name"), err)
+		}
+		peers = append(peers, peerModel)
+	}
+
+	return peers, nil
+}
+
+func (c *MikrotikController) convertWireGuardPeer(peer lowlevel.GenericJsonObject) (
+	domain.PhysicalPeer,
+	error,
+) {
+	keepAliveSeconds := 0
+	duration, err := time.ParseDuration(peer.GetString("persistent-keepalive"))
+	if err == nil {
+		keepAliveSeconds = int(duration.Seconds())
+	}
+
+	currentEndpoint := ""
+	if peer.GetString("current-endpoint-address") != "" && peer.GetString("current-endpoint-port") != "" {
+		currentEndpoint = peer.GetString("current-endpoint-address") + ":" + peer.GetString("current-endpoint-port")
+	}
+
+	lastHandshakeTime := time.Time{}
+	if peer.GetString("last-handshake") != "" {
+		relDuration, err := time.ParseDuration(peer.GetString("last-handshake"))
+		if err == nil {
+			lastHandshakeTime = time.Now().Add(-relDuration)
+		}
+	}
+
+	allowedAddresses, _ := domain.CidrsFromString(peer.GetString("allowed-address"))
+
+	clientKeepAliveSeconds := 0
+	duration, err = time.ParseDuration(peer.GetString("client-keepalive"))
+	if err == nil {
+		clientKeepAliveSeconds = int(duration.Seconds())
+	}
+
+	peerModel := domain.PhysicalPeer{
+		Identifier: domain.PeerIdentifier(peer.GetString("public-key")),
+		Endpoint:   currentEndpoint,
+		AllowedIPs: allowedAddresses,
+		KeyPair: domain.KeyPair{
+			PublicKey:  peer.GetString("public-key"),
+			PrivateKey: peer.GetString("private-key"),
+		},
+		PresharedKey:        domain.PreSharedKey(peer.GetString("preshared-key")),
+		PersistentKeepalive: keepAliveSeconds,
+		LastHandshake:       lastHandshakeTime,
+		ProtocolVersion:     0, // Mikrotik does not support protocol versioning, so we set it to 0
+		BytesUpload:         uint64(peer.GetInt("rx")),
+		BytesDownload:       uint64(peer.GetInt("tx")),
+		ImportSource:        domain.ControllerTypeMikrotik,
+	}
+
+	peerModel.SetExtras(domain.MikrotikPeerExtras{
+		Id:              peer.GetString(".id"),
+		Name:            peer.GetString("name"),
+		Comment:         peer.GetString("comment"),
+		IsResponder:     peer.GetBool("responder"),
+		Disabled:        peer.GetBool("disabled"),
+		ClientEndpoint:  peer.GetString("client-endpoint"),
+		ClientAddress:   peer.GetString("client-address"),
+		ClientDns:       peer.GetString("client-dns"),
+		ClientKeepalive: clientKeepAliveSeconds,
+	})
+
+	return peerModel, nil
+}
+
+func (c *MikrotikController) SaveInterface(
+	ctx context.Context,
+	id domain.InterfaceIdentifier,
+	updateFunc func(pi *domain.PhysicalInterface) (*domain.PhysicalInterface, error),
+) error {
+	// Lock the interface to prevent concurrent modifications
+	mutex := c.getInterfaceMutex(id)
+	mutex.Lock()
+	defer mutex.Unlock()
+
+	physicalInterface, err := c.getOrCreateInterface(ctx, id)
+	if err != nil {
+		return err
+	}
+
+	deviceId := physicalInterface.GetExtras().(domain.MikrotikInterfaceExtras).Id
+	if updateFunc != nil {
+		physicalInterface, err = updateFunc(physicalInterface)
+		if err != nil {
+			return err
+		}
+		newExtras := physicalInterface.GetExtras().(domain.MikrotikInterfaceExtras)
+		newExtras.Id = deviceId // ensure the ID is not changed
+		physicalInterface.SetExtras(newExtras)
+	}
+
+	if err := c.updateInterface(ctx, physicalInterface); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *MikrotikController) getOrCreateInterface(
+	ctx context.Context,
+	id domain.InterfaceIdentifier,
+) (*domain.PhysicalInterface, error) {
+	wgReply := c.client.Query(ctx, "/interface/wireguard", &lowlevel.MikrotikRequestOptions{
+		PropList: []string{
+			".id", "name", "public-key", "private-key", "listen-port", "mtu", "disabled", "running",
+		},
+		Filters: map[string]string{
+			"name": string(id),
+		},
+	})
+	if wgReply.Status == lowlevel.MikrotikApiStatusOk && len(wgReply.Data) > 0 {
+		return c.loadInterfaceData(ctx, wgReply.Data[0])
+	}
+
+	// create a new interface if it does not exist
+	createReply := c.client.Create(ctx, "/interface/wireguard", lowlevel.GenericJsonObject{
+		"name": string(id),
+	})
+	if wgReply.Status == lowlevel.MikrotikApiStatusOk {
+		return c.loadInterfaceData(ctx, createReply.Data)
+	}
+
+	return nil, fmt.Errorf("failed to create interface %s: %v", id, createReply.Error)
+}
+
+func (c *MikrotikController) updateInterface(ctx context.Context, pi *domain.PhysicalInterface) error {
+	extras := pi.GetExtras().(domain.MikrotikInterfaceExtras)
+	interfaceId := extras.Id
+	wgReply := c.client.Update(ctx, "/interface/wireguard/"+interfaceId, lowlevel.GenericJsonObject{
+		"name":        pi.Identifier,
+		"comment":     extras.Comment,
+		"mtu":         strconv.Itoa(pi.Mtu),
+		"listen-port": strconv.Itoa(pi.ListenPort),
+		"private-key": pi.KeyPair.PrivateKey,
+		"disabled":    strconv.FormatBool(!pi.DeviceUp),
+	})
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return fmt.Errorf("failed to update interface %s: %v", pi.Identifier, wgReply.Error)
+	}
+
+	// update the interface's addresses
+	currentV4, currentV6, err := c.loadIpAddresses(ctx, string(pi.Identifier))
+	if err != nil {
+		return fmt.Errorf("failed to load current addresses for interface %s: %v", pi.Identifier, err)
+	}
+	currentAddresses := c.convertIpAddresses(currentV4, currentV6)
+
+	// get all addresses that are currently not in the interface, only in pi
+	newAddresses := make([]domain.Cidr, 0, len(pi.Addresses))
+	for _, addr := range pi.Addresses {
+		if slices.Contains(currentAddresses, addr) {
+			continue
+		}
+		newAddresses = append(newAddresses, addr)
+	}
+	// get obsolete addresses that are in the interface, but not in pi
+	obsoleteAddresses := make([]domain.Cidr, 0, len(currentAddresses))
+	for _, addr := range currentAddresses {
+		if slices.Contains(pi.Addresses, addr) {
+			continue
+		}
+		obsoleteAddresses = append(obsoleteAddresses, addr)
+	}
+
+	// update the IP addresses for the interface
+	if err := c.updateIpAddresses(ctx, string(pi.Identifier), currentV4, currentV6,
+		newAddresses, obsoleteAddresses); err != nil {
+		return fmt.Errorf("failed to update IP addresses for interface %s: %v", pi.Identifier, err)
+	}
+
+	return nil
+}
+
+func (c *MikrotikController) updateIpAddresses(
+	ctx context.Context,
+	deviceName string,
+	currentV4, currentV6 []lowlevel.GenericJsonObject,
+	new, obsolete []domain.Cidr,
+) error {
+	// first, delete all obsolete addresses
+	for _, addr := range obsolete {
+		// find ID of the address to delete
+		if addr.IsV4() {
+			for _, a := range currentV4 {
+				if a.GetString("address") == addr.String() {
+					// delete the address
+					reply := c.client.Delete(ctx, "/ip/address/"+a.GetString(".id"))
+					if reply.Status != lowlevel.MikrotikApiStatusOk {
+						return fmt.Errorf("failed to delete obsolete IPv4 address %s: %v", addr, reply.Error)
+					}
+					break
+				}
+			}
+		} else {
+			for _, a := range currentV6 {
+				if a.GetString("address") == addr.String() {
+					// delete the address
+					reply := c.client.Delete(ctx, "/ipv6/address/"+a.GetString(".id"))
+					if reply.Status != lowlevel.MikrotikApiStatusOk {
+						return fmt.Errorf("failed to delete obsolete IPv6 address %s: %v", addr, reply.Error)
+					}
+					break
+				}
+			}
+		}
+	}
+
+	// then, add all new addresses
+	for _, addr := range new {
+		var createPath string
+		if addr.IsV4() {
+			createPath = "/ip/address"
+		} else {
+			createPath = "/ipv6/address"
+		}
+
+		// create the address
+		reply := c.client.Create(ctx, createPath, lowlevel.GenericJsonObject{
+			"address":   addr.String(),
+			"interface": deviceName,
+		})
+		if reply.Status != lowlevel.MikrotikApiStatusOk {
+			return fmt.Errorf("failed to create new address %s: %v", addr, reply.Error)
+		}
+	}
+
+	return nil
+}
+
+func (c *MikrotikController) DeleteInterface(ctx context.Context, id domain.InterfaceIdentifier) error {
+	// Lock the interface to prevent concurrent modifications
+	mutex := c.getInterfaceMutex(id)
+	mutex.Lock()
+	defer mutex.Unlock()
+
+	// delete the interface's addresses
+	currentV4, currentV6, err := c.loadIpAddresses(ctx, string(id))
+	if err != nil {
+		return fmt.Errorf("failed to load current addresses for interface %s: %v", id, err)
+	}
+	for _, a := range currentV4 {
+		// delete the address
+		reply := c.client.Delete(ctx, "/ip/address/"+a.GetString(".id"))
+		if reply.Status != lowlevel.MikrotikApiStatusOk {
+			return fmt.Errorf("failed to delete IPv4 address %s: %v", a.GetString("address"), reply.Error)
+		}
+	}
+	for _, a := range currentV6 {
+		// delete the address
+		reply := c.client.Delete(ctx, "/ipv6/address/"+a.GetString(".id"))
+		if reply.Status != lowlevel.MikrotikApiStatusOk {
+			return fmt.Errorf("failed to delete IPv6 address %s: %v", a.GetString("address"), reply.Error)
+		}
+	}
+
+	// delete the WireGuard interface
+	wgReply := c.client.Query(ctx, "/interface/wireguard", &lowlevel.MikrotikRequestOptions{
+		PropList: []string{".id"},
+		Filters: map[string]string{
+			"name": string(id),
+		},
+	})
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return fmt.Errorf("unable to find WireGuard interface %s: %v", id, wgReply.Error)
+	}
+	if len(wgReply.Data) == 0 {
+		return nil // interface does not exist, nothing to delete
+	}
+
+	interfaceId := wgReply.Data[0].GetString(".id")
+	deleteReply := c.client.Delete(ctx, "/interface/wireguard/"+interfaceId)
+	if deleteReply.Status != lowlevel.MikrotikApiStatusOk {
+		return fmt.Errorf("failed to delete WireGuard interface %s: %v", id, deleteReply.Error)
+	}
+
+	return nil
+}
+
+func (c *MikrotikController) SavePeer(
+	ctx context.Context,
+	deviceId domain.InterfaceIdentifier,
+	id domain.PeerIdentifier,
+	updateFunc func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error),
+) error {
+	// Lock the peer to prevent concurrent modifications
+	mutex := c.getPeerMutex(id)
+	mutex.Lock()
+	defer mutex.Unlock()
+
+	physicalPeer, err := c.getOrCreatePeer(ctx, deviceId, id)
+	if err != nil {
+		return err
+	}
+
+	peerId := physicalPeer.GetExtras().(domain.MikrotikPeerExtras).Id
+	physicalPeer, err = updateFunc(physicalPeer)
+	if err != nil {
+		return err
+	}
+	newExtras := physicalPeer.GetExtras().(domain.MikrotikPeerExtras)
+	newExtras.Id = peerId // ensure the ID is not changed
+	physicalPeer.SetExtras(newExtras)
+
+	if err := c.updatePeer(ctx, deviceId, physicalPeer); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func (c *MikrotikController) getOrCreatePeer(
+	ctx context.Context,
+	deviceId domain.InterfaceIdentifier,
+	id domain.PeerIdentifier,
+) (*domain.PhysicalPeer, error) {
+	wgReply := c.client.Query(ctx, "/interface/wireguard/peers", &lowlevel.MikrotikRequestOptions{
+		PropList: []string{
+			".id", "name", "public-key", "private-key", "preshared-key", "persistent-keepalive", "client-address",
+			"client-endpoint", "client-keepalive", "allowed-address", "client-dns", "comment", "disabled", "responder",
+		},
+		Filters: map[string]string{
+			"public-key": string(id),
+			"interface":  string(deviceId),
+		},
+	})
+	if wgReply.Status == lowlevel.MikrotikApiStatusOk && len(wgReply.Data) > 0 {
+		slog.Debug("found existing Mikrotik peer", "peer", id, "interface", deviceId)
+		existingPeer, err := c.convertWireGuardPeer(wgReply.Data[0])
+		if err != nil {
+			return nil, err
+		}
+		return &existingPeer, nil
+	}
+
+	// create a new peer if it does not exist
+	slog.Debug("creating new Mikrotik peer", "peer", id, "interface", deviceId)
+	createReply := c.client.Create(ctx, "/interface/wireguard/peers", lowlevel.GenericJsonObject{
+		"name":            fmt.Sprintf("tmp-wg-%s", id[0:8]),
+		"interface":       string(deviceId),
+		"public-key":      string(id),
+		"allowed-address": "0.0.0.0/0", // Use 0.0.0.0/0 as default, will be updated by updatePeer
+	})
+	if createReply.Status == lowlevel.MikrotikApiStatusOk {
+		newPeer, err := c.convertWireGuardPeer(createReply.Data)
+		if err != nil {
+			return nil, err
+		}
+		slog.Debug("successfully created Mikrotik peer", "peer", id, "interface", deviceId)
+		return &newPeer, nil
+	}
+
+	return nil, fmt.Errorf("failed to create peer %s for interface %s: %v", id, deviceId, createReply.Error)
+}
+
+func (c *MikrotikController) updatePeer(
+	ctx context.Context,
+	deviceId domain.InterfaceIdentifier,
+	pp *domain.PhysicalPeer,
+) error {
+	extras := pp.GetExtras().(domain.MikrotikPeerExtras)
+	peerId := extras.Id
+
+	endpoint := pp.Endpoint
+	endpointPort := "51820" // default port if not set
+	if s := strings.Split(endpoint, ":"); len(s) == 2 {
+		endpoint = s[0]
+		endpointPort = s[1]
+	}
+
+	allowedAddressStr := domain.CidrsToString(pp.AllowedIPs)
+	slog.Debug("updating Mikrotik peer",
+		"peer", pp.Identifier,
+		"interface", deviceId,
+		"allowed-address", allowedAddressStr,
+		"allowed-ips-count", len(pp.AllowedIPs),
+		"disabled", extras.Disabled)
+
+	wgReply := c.client.Update(ctx, "/interface/wireguard/peers/"+peerId, lowlevel.GenericJsonObject{
+		"name":                 extras.Name,
+		"comment":              extras.Comment,
+		"preshared-key":        pp.PresharedKey,
+		"public-key":           pp.KeyPair.PublicKey,
+		"private-key":          pp.KeyPair.PrivateKey,
+		"persistent-keepalive": (time.Duration(pp.PersistentKeepalive) * time.Second).String(),
+		"disabled":             strconv.FormatBool(extras.Disabled),
+		"responder":            strconv.FormatBool(extras.IsResponder),
+		"client-endpoint":      extras.ClientEndpoint,
+		"client-address":       extras.ClientAddress,
+		"client-keepalive":     (time.Duration(extras.ClientKeepalive) * time.Second).String(),
+		"client-dns":           extras.ClientDns,
+		"endpoint-address":     endpoint,
+		"endpoint-port":        endpointPort,
+		"allowed-address":      allowedAddressStr, // Add the missing allowed-address field
+	})
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return fmt.Errorf("failed to update peer %s on interface %s: %v", pp.Identifier, deviceId, wgReply.Error)
+	}
+
+	if extras.Disabled {
+		slog.Debug("successfully disabled Mikrotik peer", "peer", pp.Identifier, "interface", deviceId)
+	} else {
+		slog.Debug("successfully updated Mikrotik peer", "peer", pp.Identifier, "interface", deviceId)
+	}
+
+	return nil
+}
+
+func (c *MikrotikController) DeletePeer(
+	ctx context.Context,
+	deviceId domain.InterfaceIdentifier,
+	id domain.PeerIdentifier,
+) error {
+	// Lock the peer to prevent concurrent modifications
+	mutex := c.getPeerMutex(id)
+	mutex.Lock()
+	defer mutex.Unlock()
+
+	wgReply := c.client.Query(ctx, "/interface/wireguard/peers", &lowlevel.MikrotikRequestOptions{
+		PropList: []string{".id"},
+		Filters: map[string]string{
+			"public-key": string(id),
+			"interface":  string(deviceId),
+		},
+	})
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return fmt.Errorf("unable to find WireGuard peer %s for interface %s: %v", id, deviceId, wgReply.Error)
+	}
+	if len(wgReply.Data) == 0 {
+		return nil // peer does not exist, nothing to delete
+	}
+
+	peerId := wgReply.Data[0].GetString(".id")
+	deleteReply := c.client.Delete(ctx, "/interface/wireguard/peers/"+peerId)
+	if deleteReply.Status != lowlevel.MikrotikApiStatusOk {
+		return fmt.Errorf("failed to delete WireGuard peer %s for interface %s: %v", id, deviceId, deleteReply.Error)
+	}
+
+	return nil
+}
+
+// endregion wireguard-related
+
+// region wg-quick-related
+
+func (c *MikrotikController) ExecuteInterfaceHook(id domain.InterfaceIdentifier, hookCmd string) error {
+	// TODO implement me
+	panic("implement me")
+}
+
+func (c *MikrotikController) SetDNS(id domain.InterfaceIdentifier, dnsStr, dnsSearchStr string) error {
+	// TODO implement me
+	panic("implement me")
+}
+
+func (c *MikrotikController) UnsetDNS(id domain.InterfaceIdentifier) error {
+	// TODO implement me
+	panic("implement me")
+}
+
+// endregion wg-quick-related
+
+// region routing-related
+
+func (c *MikrotikController) SyncRouteRules(_ context.Context, rules []domain.RouteRule) error {
+	// TODO implement me
+	panic("implement me")
+}
+
+func (c *MikrotikController) DeleteRouteRules(_ context.Context, rules []domain.RouteRule) error {
+	// TODO implement me
+	panic("implement me")
+}
+
+// endregion routing-related
+
+// region statistics-related
+
+func (c *MikrotikController) PingAddresses(
+	ctx context.Context,
+	addr string,
+) (*domain.PingerResult, error) {
+	wgReply := c.client.ExecList(ctx, "/tool/ping",
+		// limit to 1 packet with a max running time of 2 seconds
+		lowlevel.GenericJsonObject{"address": addr, "count": 1, "interval": "00:00:02"},
+	)
+
+	if wgReply.Status != lowlevel.MikrotikApiStatusOk {
+		return nil, fmt.Errorf("failed to ping %s: %v", addr, wgReply.Error)
+	}
+
+	var result domain.PingerResult
+	for _, item := range wgReply.Data {
+		result.PacketsRecv += item.GetInt("received")
+		result.PacketsSent += item.GetInt("sent")
+
+		rttStr := item.GetString("avg-rtt")
+		if rttStr != "" {
+			rtt, err := time.ParseDuration(rttStr)
+			if err == nil {
+				result.Rtts = append(result.Rtts, rtt)
+			} else {
+				// use a high value to indicate failure or timeout
+				result.Rtts = append(result.Rtts, 999999*time.Millisecond)
+			}
+		}
+	}
+
+	return &result, nil
+}
+
+// endregion statistics-related

internal/app/api/v0/handlers/endpoint_config.go

@@ -21,17 +21,23 @@ import (
 //go:embed frontend_config.js.gotpl
 var frontendJs embed.FS
 
+type ControllerManager interface {
+	GetControllerNames() []config.BackendBase
+}
+
 type ConfigEndpoint struct {
 	cfg           *config.Config
 	authenticator Authenticator
+	controllerMgr ControllerManager
 
 	tpl *respond.TemplateRenderer
 }
 
-func NewConfigEndpoint(cfg *config.Config, authenticator Authenticator) ConfigEndpoint {
+func NewConfigEndpoint(cfg *config.Config, authenticator Authenticator, ctrlMgr ControllerManager) ConfigEndpoint {
 	ep := ConfigEndpoint{
 		cfg:           cfg,
 		authenticator: authenticator,
+		controllerMgr: ctrlMgr,
 		tpl: respond.NewTemplateRenderer(template.Must(template.ParseFS(frontendJs,
 			"frontend_config.js.gotpl"))),
 	}
@@ -96,13 +102,36 @@ func (e ConfigEndpoint) handleSettingsGet() http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		sessionUser := domain.GetUserInfo(r.Context())
 
+		controllerFn := func() []model.SettingsBackendNames {
+			controllers := e.controllerMgr.GetControllerNames()
+			names := make([]model.SettingsBackendNames, 0, len(controllers))
+
+			for _, controller := range controllers {
+				displayName := controller.GetDisplayName()
+				if displayName == "" {
+					displayName = controller.Id // fallback to ID if no display name is set
+				}
+				if controller.Id == config.LocalBackendName {
+					displayName = "modals.interface-edit.backend.local" // use a localized string for the local backend
+				}
+				names = append(names, model.SettingsBackendNames{
+					Id:   controller.Id,
+					Name: displayName,
+				})
+			}
+
+			return names
+
+		}
+
 		hasSocialLogin := len(e.cfg.Auth.OAuth) > 0 || len(e.cfg.Auth.OpenIDConnect) > 0 || e.cfg.Auth.WebAuthn.Enabled
 
 		// For anonymous users, we return the settings object with minimal information
 		if sessionUser.Id == domain.CtxUnknownUserId || sessionUser.Id == "" {
 			respond.JSON(w, http.StatusOK, model.Settings{
-				WebAuthnEnabled:  e.cfg.Auth.WebAuthn.Enabled,
-				LoginFormVisible: !e.cfg.Auth.HideLoginForm || !hasSocialLogin,
+				WebAuthnEnabled:   e.cfg.Auth.WebAuthn.Enabled,
+				AvailableBackends: []model.SettingsBackendNames{}, // return an empty list instead of null
+				LoginFormVisible:  !e.cfg.Auth.HideLoginForm || !hasSocialLogin,
 			})
 		} else {
 			respond.JSON(w, http.StatusOK, model.Settings{
@@ -112,6 +141,7 @@ func (e ConfigEndpoint) handleSettingsGet() http.HandlerFunc {
 				ApiAdminOnly:              e.cfg.Advanced.ApiAdminOnly,
 				WebAuthnEnabled:           e.cfg.Auth.WebAuthn.Enabled,
 				MinPasswordLength:         e.cfg.Auth.MinPasswordLength,
+				AvailableBackends:         controllerFn(),
 				LoginFormVisible:          !e.cfg.Auth.HideLoginForm || !hasSocialLogin,
 			})
 		}

internal/app/api/v0/model/models.go

@@ -6,11 +6,17 @@ type Error struct {
 }
 
 type Settings struct {
-	MailLinkOnly              bool `json:"MailLinkOnly"`
-	PersistentConfigSupported bool `json:"PersistentConfigSupported"`
-	SelfProvisioning          bool `json:"SelfProvisioning"`
-	ApiAdminOnly              bool `json:"ApiAdminOnly"`
-	WebAuthnEnabled           bool `json:"WebAuthnEnabled"`
-	MinPasswordLength         int  `json:"MinPasswordLength"`
-	LoginFormVisible          bool `json:"LoginFormVisible"`
+	MailLinkOnly              bool                   `json:"MailLinkOnly"`
+	PersistentConfigSupported bool                   `json:"PersistentConfigSupported"`
+	SelfProvisioning          bool                   `json:"SelfProvisioning"`
+	ApiAdminOnly              bool                   `json:"ApiAdminOnly"`
+	WebAuthnEnabled           bool                   `json:"WebAuthnEnabled"`
+	MinPasswordLength         int                    `json:"MinPasswordLength"`
+	AvailableBackends         []SettingsBackendNames `json:"AvailableBackends"`
+	LoginFormVisible          bool                   `json:"LoginFormVisible"`
+}
+
+type SettingsBackendNames struct {
+	Id   string `json:"Id"`
+	Name string `json:"Name"`
 }

internal/app/api/v0/model/models_interface.go

@@ -4,6 +4,7 @@ import (
 	"time"
 
 	"github.com/h44z/wg-portal/internal"
+	"github.com/h44z/wg-portal/internal/config"
 	"github.com/h44z/wg-portal/internal/domain"
 )
 
@@ -11,6 +12,7 @@ type Interface struct {
 	Identifier     string `json:"Identifier" example:"wg0"`      // device name, for example: wg0
 	DisplayName    string `json:"DisplayName"`                   // a nice display name/ description for the interface
 	Mode           string `json:"Mode" example:"server"`         // the interface type, either 'server', 'client' or 'any'
+	Backend        string `json:"Backend" example:"local"`       // the backend used for this interface e.g., local, mikrotik, ...
 	PrivateKey     string `json:"PrivateKey" example:"abcdef=="` // private Key of the server interface
 	PublicKey      string `json:"PublicKey" example:"abcdef=="`  // public Key of the server interface
 	Disabled       bool   `json:"Disabled"`                      // flag that specifies if the interface is enabled (up) or not (down)
@@ -57,6 +59,7 @@ func NewInterface(src *domain.Interface, peers []domain.Peer) *Interface {
 		Identifier:                 string(src.Identifier),
 		DisplayName:                src.DisplayName,
 		Mode:                       string(src.Type),
+		Backend:                    string(src.Backend),
 		PrivateKey:                 src.PrivateKey,
 		PublicKey:                  src.PublicKey,
 		Disabled:                   src.IsDisabled(),
@@ -92,6 +95,10 @@ func NewInterface(src *domain.Interface, peers []domain.Peer) *Interface {
 		Filename:     src.GetConfigFileName(),
 	}
 
+	if iface.Backend == "" {
+		iface.Backend = config.LocalBackendName // default to local backend
+	}
+
 	if len(peers) > 0 {
 		iface.TotalPeers = len(peers)
 
@@ -146,6 +153,7 @@ func NewDomainInterface(src *Interface) *domain.Interface {
 		SaveConfig:                 src.SaveConfig,
 		DisplayName:                src.DisplayName,
 		Type:                       domain.InterfaceType(src.Mode),
+		Backend:                    domain.InterfaceBackend(src.Backend),
 		DriverType:                 "",  // currently unused
 		Disabled:                   nil, // set below
 		DisabledReason:             src.DisabledReason,

internal/app/app.go

@@ -46,7 +46,7 @@ func Initialize(
 		users: users,
 	}
 
-	startupContext, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	startupContext, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
 	defer cancel()
 
 	// Switch to admin user context

internal/app/wireguard/controller_manager.go

@@ -0,0 +1,166 @@
+package wireguard
+
+import (
+	"context"
+	"fmt"
+	"log/slog"
+	"maps"
+	"slices"
+
+	"github.com/h44z/wg-portal/internal/adapters/wgcontroller"
+	"github.com/h44z/wg-portal/internal/config"
+	"github.com/h44z/wg-portal/internal/domain"
+)
+
+type InterfaceController interface {
+	GetId() domain.InterfaceBackend
+	GetInterfaces(_ context.Context) ([]domain.PhysicalInterface, error)
+	GetInterface(_ context.Context, id domain.InterfaceIdentifier) (*domain.PhysicalInterface, error)
+	GetPeers(_ context.Context, deviceId domain.InterfaceIdentifier) ([]domain.PhysicalPeer, error)
+	SaveInterface(
+		_ context.Context,
+		id domain.InterfaceIdentifier,
+		updateFunc func(pi *domain.PhysicalInterface) (*domain.PhysicalInterface, error),
+	) error
+	DeleteInterface(_ context.Context, id domain.InterfaceIdentifier) error
+	SavePeer(
+		_ context.Context,
+		deviceId domain.InterfaceIdentifier,
+		id domain.PeerIdentifier,
+		updateFunc func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error),
+	) error
+	DeletePeer(_ context.Context, deviceId domain.InterfaceIdentifier, id domain.PeerIdentifier) error
+	PingAddresses(
+		ctx context.Context,
+		addr string,
+	) (*domain.PingerResult, error)
+}
+
+type backendInstance struct {
+	Config         config.BackendBase // Config is the configuration for the backend instance.
+	Implementation InterfaceController
+}
+
+type ControllerManager struct {
+	cfg         *config.Config
+	controllers map[domain.InterfaceBackend]backendInstance
+}
+
+func NewControllerManager(cfg *config.Config) (*ControllerManager, error) {
+	c := &ControllerManager{
+		cfg:         cfg,
+		controllers: make(map[domain.InterfaceBackend]backendInstance),
+	}
+
+	err := c.init()
+	if err != nil {
+		return nil, err
+	}
+
+	return c, nil
+}
+
+func (c *ControllerManager) init() error {
+	if err := c.registerLocalController(); err != nil {
+		return err
+	}
+
+	if err := c.registerMikrotikControllers(); err != nil {
+		return err
+	}
+
+	c.logRegisteredControllers()
+
+	return nil
+}
+
+func (c *ControllerManager) registerLocalController() error {
+	localController, err := wgcontroller.NewLocalController(c.cfg)
+	if err != nil {
+		return fmt.Errorf("failed to create local WireGuard controller: %w", err)
+	}
+
+	c.controllers[config.LocalBackendName] = backendInstance{
+		Config: config.BackendBase{
+			Id:          config.LocalBackendName,
+			DisplayName: "Local WireGuard Controller",
+		},
+		Implementation: localController,
+	}
+	return nil
+}
+
+func (c *ControllerManager) registerMikrotikControllers() error {
+	for _, backendConfig := range c.cfg.Backend.Mikrotik {
+		if backendConfig.Id == config.LocalBackendName {
+			slog.Warn("skipping registration of Mikrotik controller with reserved ID", "id", config.LocalBackendName)
+			continue
+		}
+
+		controller, err := wgcontroller.NewMikrotikController(c.cfg, &backendConfig)
+		if err != nil {
+			return fmt.Errorf("failed to create Mikrotik controller for backend %s: %w", backendConfig.Id, err)
+		}
+
+		c.controllers[domain.InterfaceBackend(backendConfig.Id)] = backendInstance{
+			Config:         backendConfig.BackendBase,
+			Implementation: controller,
+		}
+	}
+	return nil
+}
+
+func (c *ControllerManager) logRegisteredControllers() {
+	for backend, controller := range c.controllers {
+		slog.Debug("backend controller registered",
+			"backend", backend, "type", fmt.Sprintf("%T", controller.Implementation))
+	}
+}
+
+func (c *ControllerManager) GetControllerByName(backend domain.InterfaceBackend) InterfaceController {
+	return c.getController(backend, "")
+}
+
+func (c *ControllerManager) GetController(iface domain.Interface) InterfaceController {
+	return c.getController(iface.Backend, iface.Identifier)
+}
+
+func (c *ControllerManager) getController(
+	backend domain.InterfaceBackend,
+	ifaceId domain.InterfaceIdentifier,
+) InterfaceController {
+	if backend == "" {
+		// If no backend is specified, use the local controller.
+		// This might be the case for interfaces created in previous WireGuard Portal versions.
+		backend = config.LocalBackendName
+	}
+
+	controller, exists := c.controllers[backend]
+	if !exists {
+		controller, exists = c.controllers[config.LocalBackendName] // Fallback to local controller
+		if !exists {
+			// If the local controller is also not found, panic
+			panic(fmt.Sprintf("%s interface controller for backend %s not found", ifaceId, backend))
+		}
+		slog.Warn("controller for backend not found, using local controller",
+			"backend", backend, "interface", ifaceId)
+	}
+	return controller.Implementation
+}
+
+func (c *ControllerManager) GetAllControllers() []InterfaceController {
+	var backendInstances = make([]InterfaceController, 0, len(c.controllers))
+	for instance := range maps.Values(c.controllers) {
+		backendInstances = append(backendInstances, instance.Implementation)
+	}
+	return backendInstances
+}
+
+func (c *ControllerManager) GetControllerNames() []config.BackendBase {
+	var names []config.BackendBase
+	for _, id := range slices.Sorted(maps.Keys(c.controllers)) {
+		names = append(names, c.controllers[id].Config)
+	}
+
+	return names
+}

internal/app/wireguard/statistics.go

@@ -6,8 +6,6 @@ import (
 	"sync"
 	"time"
 
-	probing "github.com/prometheus-community/pro-bing"
-
 	"github.com/h44z/wg-portal/internal/app"
 	"github.com/h44z/wg-portal/internal/config"
 	"github.com/h44z/wg-portal/internal/domain"
@@ -30,11 +28,6 @@ type StatisticsDatabaseRepo interface {
 	DeletePeerStatus(ctx context.Context, id domain.PeerIdentifier) error
 }
 
-type StatisticsInterfaceController interface {
-	GetInterface(_ context.Context, id domain.InterfaceIdentifier) (*domain.PhysicalInterface, error)
-	GetPeers(_ context.Context, deviceId domain.InterfaceIdentifier) ([]domain.PhysicalPeer, error)
-}
-
 type StatisticsMetricsServer interface {
 	UpdateInterfaceMetrics(status domain.InterfaceStatus)
 	UpdatePeerMetrics(peer *domain.Peer, status domain.PeerStatus)
@@ -47,15 +40,20 @@ type StatisticsEventBus interface {
 	Publish(topic string, args ...any)
 }
 
+type pingJob struct {
+	Peer    domain.Peer
+	Backend domain.InterfaceBackend
+}
+
 type StatisticsCollector struct {
 	cfg *config.Config
 	bus StatisticsEventBus
 
 	pingWaitGroup sync.WaitGroup
-	pingJobs      chan domain.Peer
+	pingJobs      chan pingJob
 
 	db StatisticsDatabaseRepo
-	wg StatisticsInterfaceController
+	wg *ControllerManager
 	ms StatisticsMetricsServer
 
 	peerChangeEvent chan domain.PeerIdentifier
@@ -66,7 +64,7 @@ func NewStatisticsCollector(
 	cfg *config.Config,
 	bus StatisticsEventBus,
 	db StatisticsDatabaseRepo,
-	wg StatisticsInterfaceController,
+	wg *ControllerManager,
 	ms StatisticsMetricsServer,
 ) (*StatisticsCollector, error) {
 	c := &StatisticsCollector{
@@ -117,7 +115,7 @@ func (c *StatisticsCollector) collectInterfaceData(ctx context.Context) {
 			}
 
 			for _, in := range interfaces {
-				physicalInterface, err := c.wg.GetInterface(ctx, in.Identifier)
+				physicalInterface, err := c.wg.GetController(in).GetInterface(ctx, in.Identifier)
 				if err != nil {
 					slog.Warn("failed to load physical interface for data collection", "interface", in.Identifier,
 						"error", err)
@@ -169,7 +167,7 @@ func (c *StatisticsCollector) collectPeerData(ctx context.Context) {
 			}
 
 			for _, in := range interfaces {
-				peers, err := c.wg.GetPeers(ctx, in.Identifier)
+				peers, err := c.wg.GetController(in).GetPeers(ctx, in.Identifier)
 				if err != nil {
 					slog.Warn("failed to fetch peers for data collection", "interface", in.Identifier, "error", err)
 					continue
@@ -271,7 +269,7 @@ func (c *StatisticsCollector) startPingWorkers(ctx context.Context) {
 
 	c.pingWaitGroup = sync.WaitGroup{}
 	c.pingWaitGroup.Add(c.cfg.Statistics.PingCheckWorkers)
-	c.pingJobs = make(chan domain.Peer, c.cfg.Statistics.PingCheckWorkers)
+	c.pingJobs = make(chan pingJob, c.cfg.Statistics.PingCheckWorkers)
 
 	// start workers
 	for i := 0; i < c.cfg.Statistics.PingCheckWorkers; i++ {
@@ -314,7 +312,10 @@ func (c *StatisticsCollector) enqueuePingChecks(ctx context.Context) {
 					continue
 				}
 				for _, peer := range peers {
-					c.pingJobs <- peer
+					c.pingJobs <- pingJob{
+						Peer:    peer,
+						Backend: in.Backend,
+					}
 				}
 			}
 		}
@@ -323,11 +324,14 @@ func (c *StatisticsCollector) enqueuePingChecks(ctx context.Context) {
 
 func (c *StatisticsCollector) pingWorker(ctx context.Context) {
 	defer c.pingWaitGroup.Done()
-	for peer := range c.pingJobs {
+	for job := range c.pingJobs {
+		peer := job.Peer
+		backend := job.Backend
+
 		var connectionStateChanged bool
 		var newPeerStatus domain.PeerStatus
 
-		peerPingable := c.isPeerPingable(ctx, peer)
+		peerPingable := c.isPeerPingable(ctx, backend, peer)
 		slog.Debug("peer ping check completed", "peer", peer.Identifier, "pingable", peerPingable)
 
 		now := time.Now()
@@ -368,7 +372,11 @@ func (c *StatisticsCollector) pingWorker(ctx context.Context) {
 	}
 }
 
-func (c *StatisticsCollector) isPeerPingable(ctx context.Context, peer domain.Peer) bool {
+func (c *StatisticsCollector) isPeerPingable(
+	ctx context.Context,
+	backend domain.InterfaceBackend,
+	peer domain.Peer,
+) bool {
 	if !c.cfg.Statistics.UsePingChecks {
 		return false
 	}
@@ -378,23 +386,13 @@ func (c *StatisticsCollector) isPeerPingable(ctx context.Context, peer domain.Pe
 		return false
 	}
 
-	pinger, err := probing.NewPinger(checkAddr)
+	stats, err := c.wg.GetControllerByName(backend).PingAddresses(ctx, checkAddr)
 	if err != nil {
-		slog.Debug("failed to instantiate pinger", "peer", peer.Identifier, "address", checkAddr, "error", err)
+		slog.Debug("failed to ping peer", "peer", peer.Identifier, "error", err)
 		return false
 	}
 
-	checkCount := 1
-	pinger.SetPrivileged(!c.cfg.Statistics.PingUnprivileged)
-	pinger.Count = checkCount
-	pinger.Timeout = 2 * time.Second
-	err = pinger.RunWithContext(ctx) // Blocks until finished.
-	if err != nil {
-		slog.Debug("pinger for peer exited unexpectedly", "peer", peer.Identifier, "address", checkAddr, "error", err)
-		return false
-	}
-	stats := pinger.Statistics()
-	return stats.PacketsRecv == checkCount
+	return stats.IsPingable()
 }
 
 func (c *StatisticsCollector) updateInterfaceMetrics(status domain.InterfaceStatus) {

internal/app/wireguard/wireguard.go

@@ -37,25 +37,6 @@ type InterfaceAndPeerDatabaseRepo interface {
 	GetUsedIpsPerSubnet(ctx context.Context, subnets []domain.Cidr) (map[domain.Cidr][]domain.Cidr, error)
 }
 
-type InterfaceController interface {
-	GetInterfaces(_ context.Context) ([]domain.PhysicalInterface, error)
-	GetInterface(_ context.Context, id domain.InterfaceIdentifier) (*domain.PhysicalInterface, error)
-	GetPeers(_ context.Context, deviceId domain.InterfaceIdentifier) ([]domain.PhysicalPeer, error)
-	SaveInterface(
-		_ context.Context,
-		id domain.InterfaceIdentifier,
-		updateFunc func(pi *domain.PhysicalInterface) (*domain.PhysicalInterface, error),
-	) error
-	DeleteInterface(_ context.Context, id domain.InterfaceIdentifier) error
-	SavePeer(
-		_ context.Context,
-		deviceId domain.InterfaceIdentifier,
-		id domain.PeerIdentifier,
-		updateFunc func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error),
-	) error
-	DeletePeer(_ context.Context, deviceId domain.InterfaceIdentifier, id domain.PeerIdentifier) error
-}
-
 type WgQuickController interface {
 	ExecuteInterfaceHook(id domain.InterfaceIdentifier, hookCmd string) error
 	SetDNS(id domain.InterfaceIdentifier, dnsStr, dnsSearchStr string) error
@@ -75,7 +56,7 @@ type Manager struct {
 	cfg   *config.Config
 	bus   EventBus
 	db    InterfaceAndPeerDatabaseRepo
-	wg    InterfaceController
+	wg    *ControllerManager
 	quick WgQuickController
 
 	userLockMap *sync.Map
@@ -84,7 +65,7 @@ type Manager struct {
 func NewWireGuardManager(
 	cfg *config.Config,
 	bus EventBus,
-	wg InterfaceController,
+	wg *ControllerManager,
 	quick WgQuickController,
 	db InterfaceAndPeerDatabaseRepo,
 ) (*Manager, error) {

internal/app/wireguard/wireguard_interfaces.go

@@ -11,6 +11,7 @@ import (
 
 	"github.com/h44z/wg-portal/internal/app"
 	"github.com/h44z/wg-portal/internal/app/audit"
+	"github.com/h44z/wg-portal/internal/config"
 	"github.com/h44z/wg-portal/internal/domain"
 )
 
@@ -21,12 +22,17 @@ func (m Manager) GetImportableInterfaces(ctx context.Context) ([]domain.Physical
 		return nil, err
 	}
 
-	physicalInterfaces, err := m.wg.GetInterfaces(ctx)
-	if err != nil {
-		return nil, err
+	var allPhysicalInterfaces []domain.PhysicalInterface
+	for _, wgBackend := range m.wg.GetAllControllers() {
+		physicalInterfaces, err := wgBackend.GetInterfaces(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		allPhysicalInterfaces = append(allPhysicalInterfaces, physicalInterfaces...)
 	}
 
-	return physicalInterfaces, nil
+	return allPhysicalInterfaces, nil
 }
 
 // GetInterfaceAndPeers returns the interface and all peers for the given interface identifier.
@@ -109,47 +115,49 @@ func (m Manager) ImportNewInterfaces(ctx context.Context, filter ...domain.Inter
 		return 0, err
 	}
 
-	physicalInterfaces, err := m.wg.GetInterfaces(ctx)
-	if err != nil {
-		return 0, err
-	}
-
-	// if no filter is given, exclude already existing interfaces
-	var excludedInterfaces []domain.InterfaceIdentifier
-	if len(filter) == 0 {
-		existingInterfaces, err := m.db.GetAllInterfaces(ctx)
-		if err != nil {
-			return 0, err
-		}
-		for _, existingInterface := range existingInterfaces {
-			excludedInterfaces = append(excludedInterfaces, existingInterface.Identifier)
-		}
-	}
-
 	imported := 0
-	for _, physicalInterface := range physicalInterfaces {
-		if slices.Contains(excludedInterfaces, physicalInterface.Identifier) {
-			continue
-		}
-
-		if len(filter) != 0 && !slices.Contains(filter, physicalInterface.Identifier) {
-			continue
-		}
-
-		slog.Info("importing new interface", "interface", physicalInterface.Identifier)
-
-		physicalPeers, err := m.wg.GetPeers(ctx, physicalInterface.Identifier)
+	for _, wgBackend := range m.wg.GetAllControllers() {
+		physicalInterfaces, err := wgBackend.GetInterfaces(ctx)
 		if err != nil {
 			return 0, err
 		}
 
-		err = m.importInterface(ctx, &physicalInterface, physicalPeers)
-		if err != nil {
-			return 0, fmt.Errorf("import of %s failed: %w", physicalInterface.Identifier, err)
+		// if no filter is given, exclude already existing interfaces
+		var excludedInterfaces []domain.InterfaceIdentifier
+		if len(filter) == 0 {
+			existingInterfaces, err := m.db.GetAllInterfaces(ctx)
+			if err != nil {
+				return 0, err
+			}
+			for _, existingInterface := range existingInterfaces {
+				excludedInterfaces = append(excludedInterfaces, existingInterface.Identifier)
+			}
 		}
 
-		slog.Info("imported new interface", "interface", physicalInterface.Identifier, "peers", len(physicalPeers))
-		imported++
+		for _, physicalInterface := range physicalInterfaces {
+			if slices.Contains(excludedInterfaces, physicalInterface.Identifier) {
+				continue
+			}
+
+			if len(filter) != 0 && !slices.Contains(filter, physicalInterface.Identifier) {
+				continue
+			}
+
+			slog.Info("importing new interface", "interface", physicalInterface.Identifier)
+
+			physicalPeers, err := wgBackend.GetPeers(ctx, physicalInterface.Identifier)
+			if err != nil {
+				return 0, err
+			}
+
+			err = m.importInterface(ctx, wgBackend, &physicalInterface, physicalPeers)
+			if err != nil {
+				return 0, fmt.Errorf("import of %s failed: %w", physicalInterface.Identifier, err)
+			}
+
+			slog.Info("imported new interface", "interface", physicalInterface.Identifier, "peers", len(physicalPeers))
+			imported++
+		}
 	}
 
 	return imported, nil
@@ -213,7 +221,7 @@ func (m Manager) RestoreInterfaceState(
 			return fmt.Errorf("failed to load peers for %s: %w", iface.Identifier, err)
 		}
 
-		_, err = m.wg.GetInterface(ctx, iface.Identifier)
+		_, err = m.wg.GetController(iface).GetInterface(ctx, iface.Identifier)
 		if err != nil && !iface.IsDisabled() {
 			slog.Debug("creating missing interface", "interface", iface.Identifier)
 
@@ -260,18 +268,14 @@ func (m Manager) RestoreInterfaceState(
 		// restore peers
 		for _, peer := range peers {
 			switch {
-			case iface.IsDisabled(): // if interface is disabled, delete all peers
-				if err := m.wg.DeletePeer(ctx, iface.Identifier, peer.Identifier); err != nil {
+			case iface.IsDisabled() && iface.Backend == config.LocalBackendName: // if interface is disabled, delete all peers
+				if err := m.wg.GetController(iface).DeletePeer(ctx, iface.Identifier,
+					peer.Identifier); err != nil {
 					return fmt.Errorf("failed to remove peer %s for disabled interface %s: %w",
 						peer.Identifier, iface.Identifier, err)
 				}
-			case peer.IsDisabled(): // if peer is disabled, delete it
-				if err := m.wg.DeletePeer(ctx, iface.Identifier, peer.Identifier); err != nil {
-					return fmt.Errorf("failed to remove disbaled peer %s from interface %s: %w",
-						peer.Identifier, iface.Identifier, err)
-				}
 			default: // update peer
-				err := m.wg.SavePeer(ctx, iface.Identifier, peer.Identifier,
+				err := m.wg.GetController(iface).SavePeer(ctx, iface.Identifier, peer.Identifier,
 					func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error) {
 						domain.MergeToPhysicalPeer(pp, &peer)
 						return pp, nil
@@ -284,7 +288,7 @@ func (m Manager) RestoreInterfaceState(
 		}
 
 		// remove non-wgportal peers
-		physicalPeers, _ := m.wg.GetPeers(ctx, iface.Identifier)
+		physicalPeers, _ := m.wg.GetController(iface).GetPeers(ctx, iface.Identifier)
 		for _, physicalPeer := range physicalPeers {
 			isWgPortalPeer := false
 			for _, peer := range peers {
@@ -294,7 +298,8 @@ func (m Manager) RestoreInterfaceState(
 				}
 			}
 			if !isWgPortalPeer {
-				err := m.wg.DeletePeer(ctx, iface.Identifier, domain.PeerIdentifier(physicalPeer.PublicKey))
+				err := m.wg.GetController(iface).DeletePeer(ctx, iface.Identifier,
+					domain.PeerIdentifier(physicalPeer.PublicKey))
 				if err != nil {
 					return fmt.Errorf("failed to remove non-wgportal peer %s from interface %s: %w",
 						physicalPeer.PublicKey, iface.Identifier, err)
@@ -459,7 +464,7 @@ func (m Manager) DeleteInterface(ctx context.Context, id domain.InterfaceIdentif
 	existingInterface.Disabled = &now // simulate a disabled interface
 	existingInterface.DisabledReason = domain.DisabledReasonDeleted
 
-	physicalInterface, _ := m.wg.GetInterface(ctx, id)
+	physicalInterface, _ := m.wg.GetController(*existingInterface).GetInterface(ctx, id)
 
 	if err := m.handleInterfacePreSaveHooks(existingInterface, !existingInterface.IsDisabled(), false); err != nil {
 		return fmt.Errorf("pre-delete hooks failed: %w", err)
@@ -473,7 +478,7 @@ func (m Manager) DeleteInterface(ctx context.Context, id domain.InterfaceIdentif
 		return fmt.Errorf("peer deletion failure: %w", err)
 	}
 
-	if err := m.wg.DeleteInterface(ctx, id); err != nil {
+	if err := m.wg.GetController(*existingInterface).DeleteInterface(ctx, id); err != nil {
 		return fmt.Errorf("wireguard deletion failure: %w", err)
 	}
 
@@ -522,7 +527,7 @@ func (m Manager) saveInterface(ctx context.Context, iface *domain.Interface) (
 	err := m.db.SaveInterface(ctx, iface.Identifier, func(i *domain.Interface) (*domain.Interface, error) {
 		iface.CopyCalculatedAttributes(i)
 
-		err := m.wg.SaveInterface(ctx, iface.Identifier,
+		err := m.wg.GetController(*iface).SaveInterface(ctx, iface.Identifier,
 			func(pi *domain.PhysicalInterface) (*domain.PhysicalInterface, error) {
 				domain.MergeToPhysicalInterface(pi, iface)
 				return pi, nil
@@ -538,7 +543,7 @@ func (m Manager) saveInterface(ctx context.Context, iface *domain.Interface) (
 	}
 
 	if iface.IsDisabled() {
-		physicalInterface, _ := m.wg.GetInterface(ctx, iface.Identifier)
+		physicalInterface, _ := m.wg.GetController(*iface).GetInterface(ctx, iface.Identifier)
 		fwMark := iface.FirewallMark
 		if physicalInterface != nil && fwMark == 0 {
 			fwMark = physicalInterface.FirewallMark
@@ -556,13 +561,13 @@ func (m Manager) saveInterface(ctx context.Context, iface *domain.Interface) (
 	}
 
 	// If the interface has just been enabled, restore its peers on the physical controller
-	if !oldEnabled && newEnabled {
+	if !oldEnabled && newEnabled && iface.Backend == config.LocalBackendName {
 		peers, err := m.db.GetInterfacePeers(ctx, iface.Identifier)
 		if err != nil {
 			return nil, fmt.Errorf("failed to load peers for interface %s: %w", iface.Identifier, err)
 		}
 		for _, peer := range peers {
-			saveErr := m.wg.SavePeer(ctx, iface.Identifier, peer.Identifier,
+			saveErr := m.wg.GetController(*iface).SavePeer(ctx, iface.Identifier, peer.Identifier,
 				func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error) {
 					domain.MergeToPhysicalPeer(pp, &peer)
 					return pp, nil
@@ -766,7 +771,12 @@ func (m Manager) getFreshListenPort(ctx context.Context) (port int, err error) {
 	return
 }
 
-func (m Manager) importInterface(ctx context.Context, in *domain.PhysicalInterface, peers []domain.PhysicalPeer) error {
+func (m Manager) importInterface(
+	ctx context.Context,
+	backend InterfaceController,
+	in *domain.PhysicalInterface,
+	peers []domain.PhysicalPeer,
+) error {
 	now := time.Now()
 	iface := domain.ConvertPhysicalInterface(in)
 	iface.BaseModel = domain.BaseModel{
@@ -775,8 +785,20 @@ func (m Manager) importInterface(ctx context.Context, in *domain.PhysicalInterfa
 		CreatedAt: now,
 		UpdatedAt: now,
 	}
+	iface.Backend = backend.GetId()
 	iface.PeerDefAllowedIPsStr = iface.AddressStr()
 
+	// try to predict the interface type based on the number of peers
+	switch len(peers) {
+	case 0:
+		iface.Type = domain.InterfaceTypeAny // no peers means this is an unknown interface
+	case 1:
+		iface.Type = domain.InterfaceTypeClient // one peer means this is a client interface
+	default: // multiple peers means this is a server interface
+
+		iface.Type = domain.InterfaceTypeServer
+	}
+
 	existingInterface, err := m.db.GetInterface(ctx, iface.Identifier)
 	if err != nil && !errors.Is(err, domain.ErrNotFound) {
 		return err
@@ -827,16 +849,20 @@ func (m Manager) importPeer(ctx context.Context, in *domain.Interface, p *domain
 	peer.Interface.PreDown = domain.NewConfigOption(in.PeerDefPreDown, true)
 	peer.Interface.PostDown = domain.NewConfigOption(in.PeerDefPostDown, true)
 
+	var displayName string
 	switch in.Type {
 	case domain.InterfaceTypeAny:
 		peer.Interface.Type = domain.InterfaceTypeAny
-		peer.DisplayName = "Autodetected Peer (" + peer.Interface.PublicKey[0:8] + ")"
+		displayName = "Autodetected Peer (" + peer.Interface.PublicKey[0:8] + ")"
 	case domain.InterfaceTypeClient:
 		peer.Interface.Type = domain.InterfaceTypeServer
-		peer.DisplayName = "Autodetected Endpoint (" + peer.Interface.PublicKey[0:8] + ")"
+		displayName = "Autodetected Endpoint (" + peer.Interface.PublicKey[0:8] + ")"
 	case domain.InterfaceTypeServer:
 		peer.Interface.Type = domain.InterfaceTypeClient
-		peer.DisplayName = "Autodetected Client (" + peer.Interface.PublicKey[0:8] + ")"
+		displayName = "Autodetected Client (" + peer.Interface.PublicKey[0:8] + ")"
+	}
+	if peer.DisplayName == "" {
+		peer.DisplayName = displayName // use auto-generated display name if not set
 	}
 
 	err := m.db.SavePeer(ctx, peer.Identifier, func(_ *domain.Peer) (*domain.Peer, error) {
@@ -850,12 +876,12 @@ func (m Manager) importPeer(ctx context.Context, in *domain.Interface, p *domain
 }
 
 func (m Manager) deleteInterfacePeers(ctx context.Context, id domain.InterfaceIdentifier) error {
-	allPeers, err := m.db.GetInterfacePeers(ctx, id)
+	iface, allPeers, err := m.db.GetInterfaceAndPeers(ctx, id)
 	if err != nil {
 		return err
 	}
 	for _, peer := range allPeers {
-		err = m.wg.DeletePeer(ctx, id, peer.Identifier)
+		err = m.wg.GetController(*iface).DeletePeer(ctx, id, peer.Identifier)
 		if err != nil && !errors.Is(err, os.ErrNotExist) {
 			return fmt.Errorf("wireguard peer deletion failure for %s: %w", peer.Identifier, err)
 		}

internal/app/wireguard/wireguard_peers.go

@@ -371,7 +371,12 @@ func (m Manager) DeletePeer(ctx context.Context, id domain.PeerIdentifier) error
 		return fmt.Errorf("delete not allowed: %w", err)
 	}
 
-	err = m.wg.DeletePeer(ctx, peer.InterfaceIdentifier, id)
+	iface, err := m.db.GetInterface(ctx, peer.InterfaceIdentifier)
+	if err != nil {
+		return fmt.Errorf("unable to find interface %s: %w", peer.InterfaceIdentifier, err)
+	}
+
+	err = m.wg.GetController(*iface).DeletePeer(ctx, peer.InterfaceIdentifier, id)
 	if err != nil {
 		return fmt.Errorf("wireguard failed to delete peer %s: %w", id, err)
 	}
@@ -433,35 +438,28 @@ func (m Manager) GetUserPeerStats(ctx context.Context, id domain.UserIdentifier)
 func (m Manager) savePeers(ctx context.Context, peers ...*domain.Peer) error {
 	interfaces := make(map[domain.InterfaceIdentifier]struct{})
 
-	for i := range peers {
-		peer := peers[i]
-		var err error
-		if peer.IsDisabled() || peer.IsExpired() {
-			err = m.db.SavePeer(ctx, peer.Identifier, func(p *domain.Peer) (*domain.Peer, error) {
-				peer.CopyCalculatedAttributes(p)
-
-				if err := m.wg.DeletePeer(ctx, peer.InterfaceIdentifier, peer.Identifier); err != nil {
-					return nil, fmt.Errorf("failed to delete wireguard peer %s: %w", peer.Identifier, err)
-				}
-
-				return peer, nil
-			})
-		} else {
-			err = m.db.SavePeer(ctx, peer.Identifier, func(p *domain.Peer) (*domain.Peer, error) {
-				peer.CopyCalculatedAttributes(p)
-
-				err := m.wg.SavePeer(ctx, peer.InterfaceIdentifier, peer.Identifier,
-					func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error) {
-						domain.MergeToPhysicalPeer(pp, peer)
-						return pp, nil
-					})
-				if err != nil {
-					return nil, fmt.Errorf("failed to save wireguard peer %s: %w", peer.Identifier, err)
-				}
-
-				return peer, nil
-			})
+	for _, peer := range peers {
+		iface, err := m.db.GetInterface(ctx, peer.InterfaceIdentifier)
+		if err != nil {
+			return fmt.Errorf("unable to find interface %s: %w", peer.InterfaceIdentifier, err)
 		}
+
+		// Always save the peer to the backend, regardless of disabled/expired state
+		// The backend will handle the disabled state appropriately
+		err = m.db.SavePeer(ctx, peer.Identifier, func(p *domain.Peer) (*domain.Peer, error) {
+			peer.CopyCalculatedAttributes(p)
+
+			err := m.wg.GetController(*iface).SavePeer(ctx, peer.InterfaceIdentifier, peer.Identifier,
+				func(pp *domain.PhysicalPeer) (*domain.PhysicalPeer, error) {
+					domain.MergeToPhysicalPeer(pp, peer)
+					return pp, nil
+				})
+			if err != nil {
+				return nil, fmt.Errorf("failed to save wireguard peer %s: %w", peer.Identifier, err)
+			}
+
+			return peer, nil
+		})
 		if err != nil {
 			return fmt.Errorf("save failure for peer %s: %w", peer.Identifier, err)
 		}

internal/config/backend.go

@@ -0,0 +1,94 @@
+package config
+
+import (
+	"fmt"
+	"time"
+)
+
+const LocalBackendName = "local"
+
+type Backend struct {
+	Default string `yaml:"default"` // The default backend to use (defaults to the internal backend)
+
+	Mikrotik []BackendMikrotik `yaml:"mikrotik"`
+}
+
+// Validate checks the backend configuration for errors.
+func (b *Backend) Validate() error {
+	if b.Default == "" {
+		b.Default = LocalBackendName
+	}
+
+	uniqueMap := make(map[string]struct{})
+	for _, backend := range b.Mikrotik {
+		if backend.Id == LocalBackendName {
+			return fmt.Errorf("backend ID %q is a reserved keyword", LocalBackendName)
+		}
+		if _, exists := uniqueMap[backend.Id]; exists {
+			return fmt.Errorf("backend ID %q is not unique", backend.Id)
+		}
+		uniqueMap[backend.Id] = struct{}{}
+	}
+
+	if b.Default != LocalBackendName {
+		if _, ok := uniqueMap[b.Default]; !ok {
+			return fmt.Errorf("default backend %q is not defined in the configuration", b.Default)
+		}
+	}
+
+	return nil
+}
+
+type BackendBase struct {
+	Id          string `yaml:"id"`           // A unique id for the backend
+	DisplayName string `yaml:"display_name"` // A display name for the backend
+}
+
+// GetDisplayName returns the display name of the backend.
+// If no display name is set, it falls back to the ID.
+func (b BackendBase) GetDisplayName() string {
+	if b.DisplayName == "" {
+		return b.Id // Fallback to ID if no display name is set
+	}
+	return b.DisplayName
+}
+
+type BackendMikrotik struct {
+	BackendBase `yaml:",inline"` // Embed the base fields
+
+	ApiUrl       string        `yaml:"api_url"` // The base URL of the Mikrotik API (e.g., "https://10.10.10.10:8729/rest")
+	ApiUser      string        `yaml:"api_user"`
+	ApiPassword  string        `yaml:"api_password"`
+	ApiVerifyTls bool          `yaml:"api_verify_tls"` // Whether to verify the TLS certificate of the Mikrotik API
+	ApiTimeout   time.Duration `yaml:"api_timeout"`    // Timeout for API requests (default: 30 seconds)
+
+	// Concurrency controls the maximum number of concurrent API requests that this backend will issue
+	// when enumerating interfaces and their details. If 0 or negative, a default of 5 is used.
+	Concurrency int `yaml:"concurrency"`
+
+	Debug bool `yaml:"debug"` // Enable debug logging for the Mikrotik backend
+}
+
+// GetConcurrency returns the configured concurrency for this backend or a sane default (5)
+// when the configured value is zero or negative.
+func (b *BackendMikrotik) GetConcurrency() int {
+	if b == nil {
+		return 5
+	}
+	if b.Concurrency <= 0 {
+		return 5
+	}
+	return b.Concurrency
+}
+
+// GetApiTimeout returns the configured API timeout or a sane default (30 seconds)
+// when the configured value is zero or negative.
+func (b *BackendMikrotik) GetApiTimeout() time.Duration {
+	if b == nil {
+		return 30 * time.Second
+	}
+	if b.ApiTimeout <= 0 {
+		return 30 * time.Second
+	}
+	return b.ApiTimeout
+}

internal/config/config.go

@@ -44,6 +44,8 @@ type Config struct {
 		LimitAdditionalUserPeers int           `yaml:"limit_additional_user_peers"`
 	} `yaml:"advanced"`
 
+	Backend Backend `yaml:"backend"`
+
 	Statistics struct {
 		UsePingChecks          bool          `yaml:"use_ping_checks"`
 		PingCheckWorkers       int           `yaml:"ping_check_workers"`
@@ -99,6 +101,12 @@ func (c *Config) LogStartupValues() {
 		"minPasswordLength", c.Auth.MinPasswordLength,
 		"hideLoginForm", c.Auth.HideLoginForm,
 	)
+
+	slog.Debug("Config Backend",
+		"defaultBackend", c.Backend.Default,
+		"extraBackends", len(c.Backend.Mikrotik),
+	)
+
 }
 
 // defaultConfig returns the default configuration
@@ -122,6 +130,10 @@ func defaultConfig() *Config {
 		DSN:  "data/sqlite.db",
 	}
 
+	cfg.Backend = Backend{
+		Default: LocalBackendName, // local backend is the default (using wgcrtl)
+	}
+
 	cfg.Web = WebConfig{
 		RequestLogging:    false,
 		ExternalUrl:       "http://localhost:8888",
@@ -201,6 +213,10 @@ func GetConfig() (*Config, error) {
 	}
 
 	cfg.Web.Sanitize()
+	err := cfg.Backend.Validate()
+	if err != nil {
+		return nil, err
+	}
 
 	return cfg, nil
 }

internal/domain/controller.go

@@ -0,0 +1,32 @@
+package domain
+
+// ControllerType defines the type of controller used to manage interfaces.
+
+const (
+	ControllerTypeMikrotik = "mikrotik"
+	ControllerTypeLocal    = "wgctrl"
+)
+
+// Controller extras can be used to store additional information available for specific controllers only.
+
+type MikrotikInterfaceExtras struct {
+	Id       string // internal mikrotik ID
+	Comment  string
+	Disabled bool
+}
+
+type MikrotikPeerExtras struct {
+	Id              string // internal mikrotik ID
+	Name            string
+	Comment         string
+	IsResponder     bool
+	Disabled        bool
+	ClientEndpoint  string
+	ClientAddress   string
+	ClientDns       string
+	ClientKeepalive int
+}
+
+type LocalPeerExtras struct {
+	Disabled bool
+}

internal/domain/interface.go

@@ -10,6 +10,8 @@ import (
 	"strings"
 	"time"
 
+	"golang.org/x/sys/unix"
+
 	"github.com/h44z/wg-portal/internal"
 )
 
@@ -23,6 +25,7 @@ var allowedFileNameRegex = regexp.MustCompile("[^a-zA-Z0-9-_]+")
 
 type InterfaceIdentifier string
 type InterfaceType string
+type InterfaceBackend string
 
 type Interface struct {
 	BaseModel
@@ -49,11 +52,12 @@ type Interface struct {
 	SaveConfig bool // automatically persist config changes to the wgX.conf file
 
 	// WG Portal specific
-	DisplayName    string        // a nice display name/ description for the interface
-	Type           InterfaceType // the interface type, either InterfaceTypeServer or InterfaceTypeClient
-	DriverType     string        // the interface driver type (linux, software, ...)
-	Disabled       *time.Time    `gorm:"index"` // flag that specifies if the interface is enabled (up) or not (down)
-	DisabledReason string        // the reason why the interface has been disabled
+	DisplayName    string           // a nice display name/ description for the interface
+	Type           InterfaceType    // the interface type, either InterfaceTypeServer or InterfaceTypeClient
+	Backend        InterfaceBackend // the backend that is used to manage the interface (wgctrl, mikrotik, ...)
+	DriverType     string           // the interface driver type (linux, software, ...)
+	Disabled       *time.Time       `gorm:"index"` // flag that specifies if the interface is enabled (up) or not (down)
+	DisabledReason string           // the reason why the interface has been disabled
 
 	// Default settings for the peer, used for new peers, those settings will be published to ConfigOption options of
 	// the peer config
@@ -204,9 +208,31 @@ type PhysicalInterface struct {
 
 	BytesUpload   uint64
 	BytesDownload uint64
+
+	backendExtras any // additional backend-specific extras, e.g., domain.MikrotikInterfaceExtras
+}
+
+func (p *PhysicalInterface) GetExtras() any {
+	return p.backendExtras
+}
+
+func (p *PhysicalInterface) SetExtras(extras any) {
+	switch extras.(type) {
+	case MikrotikInterfaceExtras: // OK
+	default: // we only support MikrotikInterfaceExtras for now
+		panic(fmt.Sprintf("unsupported interface backend extras type %T", extras))
+	}
+
+	p.backendExtras = extras
 }
 
 func ConvertPhysicalInterface(pi *PhysicalInterface) *Interface {
+	networks := make([]Cidr, 0, len(pi.Addresses))
+	for _, addr := range pi.Addresses {
+		networks = append(networks, addr.NetworkAddr())
+	}
+
+	// create a new basic interface with the data from the physical interface
 	iface := &Interface{
 		Identifier:                 pi.Identifier,
 		KeyPair:                    pi.KeyPair,
@@ -226,11 +252,11 @@ func ConvertPhysicalInterface(pi *PhysicalInterface) *Interface {
 		Type:                       InterfaceTypeAny,
 		DriverType:                 pi.DeviceType,
 		Disabled:                   nil,
-		PeerDefNetworkStr:          "",
+		PeerDefNetworkStr:          CidrsToString(networks),
 		PeerDefDnsStr:              "",
 		PeerDefDnsSearchStr:        "",
 		PeerDefEndpoint:            "",
-		PeerDefAllowedIPsStr:       "",
+		PeerDefAllowedIPsStr:       CidrsToString(networks),
 		PeerDefMtu:                 pi.Mtu,
 		PeerDefPersistentKeepalive: 0,
 		PeerDefFirewallMark:        0,
@@ -241,6 +267,23 @@ func ConvertPhysicalInterface(pi *PhysicalInterface) *Interface {
 		PeerDefPostDown:            "",
 	}
 
+	if pi.GetExtras() == nil {
+		return iface
+	}
+
+	// enrich the data with controller-specific extras
+	now := time.Now()
+	switch pi.ImportSource {
+	case ControllerTypeMikrotik:
+		extras := pi.GetExtras().(MikrotikInterfaceExtras)
+		iface.DisplayName = extras.Comment
+		if extras.Disabled {
+			iface.Disabled = &now
+		} else {
+			iface.Disabled = nil
+		}
+	}
+
 	return iface
 }
 
@@ -253,6 +296,15 @@ func MergeToPhysicalInterface(pi *PhysicalInterface, i *Interface) {
 	pi.FirewallMark = i.FirewallMark
 	pi.DeviceUp = !i.IsDisabled()
 	pi.Addresses = i.Addresses
+
+	switch pi.ImportSource {
+	case ControllerTypeMikrotik:
+		extras := MikrotikInterfaceExtras{
+			Comment:  i.DisplayName,
+			Disabled: i.IsDisabled(),
+		}
+		pi.SetExtras(extras)
+	}
 }
 
 type RoutingTableInfo struct {
@@ -279,3 +331,30 @@ func (r RoutingTableInfo) GetRoutingTable() int {
 
 	return r.Table
 }
+
+type IpFamily int
+
+const (
+	IpFamilyIPv4 IpFamily = unix.AF_INET
+	IpFamilyIPv6 IpFamily = unix.AF_INET6
+)
+
+func (f IpFamily) String() string {
+	switch f {
+	case IpFamilyIPv4:
+		return "IPv4"
+	case IpFamilyIPv6:
+		return "IPv6"
+	default:
+		return "unknown"
+	}
+}
+
+// RouteRule represents a routing table rule.
+type RouteRule struct {
+	InterfaceId InterfaceIdentifier
+	IpFamily    IpFamily
+	FwMark      uint32
+	Table       int
+	HasDefault  bool
+}

internal/domain/peer.go

@@ -129,7 +129,7 @@ func (p *Peer) GenerateDisplayName(prefix string) {
 	p.DisplayName = fmt.Sprintf("%sPeer %s", prefix, internal.TruncateString(string(p.Identifier), 8))
 }
 
-// OverwriteUserEditableFields overwrites the user editable fields of the peer with the values from the userPeer
+// OverwriteUserEditableFields overwrites the user-editable fields of the peer with the values from the userPeer
 func (p *Peer) OverwriteUserEditableFields(userPeer *Peer, cfg *config.Config) {
 	p.DisplayName = userPeer.DisplayName
 	if cfg.Core.EditableKeys {
@@ -182,9 +182,12 @@ type PhysicalPeer struct {
 
 	BytesUpload   uint64 // upload bytes are the number of bytes that the remote peer has sent to the server
 	BytesDownload uint64 // upload bytes are the number of bytes that the remote peer has received from the server
+
+	ImportSource  string // import source (wgctrl, file, ...)
+	backendExtras any    // additional backend-specific extras, e.g., domain.MikrotikPeerExtras
 }
 
-func (p PhysicalPeer) GetPresharedKey() *wgtypes.Key {
+func (p *PhysicalPeer) GetPresharedKey() *wgtypes.Key {
 	if p.PresharedKey == "" {
 		return nil
 	}
@@ -196,7 +199,7 @@ func (p PhysicalPeer) GetPresharedKey() *wgtypes.Key {
 	return &key
 }
 
-func (p PhysicalPeer) GetEndpointAddress() *net.UDPAddr {
+func (p *PhysicalPeer) GetEndpointAddress() *net.UDPAddr {
 	if p.Endpoint == "" {
 		return nil
 	}
@@ -208,7 +211,7 @@ func (p PhysicalPeer) GetEndpointAddress() *net.UDPAddr {
 	return addr
 }
 
-func (p PhysicalPeer) GetPersistentKeepaliveTime() *time.Duration {
+func (p *PhysicalPeer) GetPersistentKeepaliveTime() *time.Duration {
 	if p.PersistentKeepalive == 0 {
 		return nil
 	}
@@ -217,7 +220,7 @@ func (p PhysicalPeer) GetPersistentKeepaliveTime() *time.Duration {
 	return &keepAliveDuration
 }
 
-func (p PhysicalPeer) GetAllowedIPs() []net.IPNet {
+func (p *PhysicalPeer) GetAllowedIPs() []net.IPNet {
 	allowedIPs := make([]net.IPNet, len(p.AllowedIPs))
 	for i, ip := range p.AllowedIPs {
 		allowedIPs[i] = *ip.IpNet()
@@ -226,6 +229,21 @@ func (p PhysicalPeer) GetAllowedIPs() []net.IPNet {
 	return allowedIPs
 }
 
+func (p *PhysicalPeer) GetExtras() any {
+	return p.backendExtras
+}
+
+func (p *PhysicalPeer) SetExtras(extras any) {
+	switch extras.(type) {
+	case MikrotikPeerExtras: // OK
+	case LocalPeerExtras: // OK
+	default: // we only support MikrotikPeerExtras and LocalPeerExtras for now
+		panic(fmt.Sprintf("unsupported peer backend extras type %T", extras))
+	}
+
+	p.backendExtras = extras
+}
+
 func ConvertPhysicalPeer(pp *PhysicalPeer) *Peer {
 	peer := &Peer{
 		Endpoint:            NewConfigOption(pp.Endpoint, true),
@@ -244,6 +262,44 @@ func ConvertPhysicalPeer(pp *PhysicalPeer) *Peer {
 		},
 	}
 
+	if pp.GetExtras() == nil {
+		return peer
+	}
+
+	// enrich the data with controller-specific extras
+	now := time.Now()
+	switch pp.ImportSource {
+	case ControllerTypeMikrotik:
+		extras := pp.GetExtras().(MikrotikPeerExtras)
+		peer.Notes = extras.Comment
+		peer.DisplayName = extras.Name
+		if extras.ClientEndpoint != "" { // if the client endpoint is set, we assume that this is a client peer
+			peer.Endpoint = NewConfigOption(extras.ClientEndpoint, true)
+			peer.Interface.Type = InterfaceTypeClient
+			peer.Interface.Addresses, _ = CidrsFromString(extras.ClientAddress)
+			peer.Interface.DnsStr = NewConfigOption(extras.ClientDns, true)
+			peer.PersistentKeepalive = NewConfigOption(extras.ClientKeepalive, true)
+		} else {
+			peer.Interface.Type = InterfaceTypeServer
+		}
+		if extras.Disabled {
+			peer.Disabled = &now
+			peer.DisabledReason = "Disabled by Mikrotik controller"
+		} else {
+			peer.Disabled = nil
+			peer.DisabledReason = ""
+		}
+	case ControllerTypeLocal:
+		extras := pp.GetExtras().(LocalPeerExtras)
+		if extras.Disabled {
+			peer.Disabled = &now
+			peer.DisabledReason = "Disabled by Local controller"
+		} else {
+			peer.Disabled = nil
+			peer.DisabledReason = ""
+		}
+	}
+
 	return peer
 }
 
@@ -265,6 +321,27 @@ func MergeToPhysicalPeer(pp *PhysicalPeer, p *Peer) {
 	pp.PresharedKey = p.PresharedKey
 	pp.PublicKey = p.Interface.PublicKey
 	pp.PersistentKeepalive = p.PersistentKeepalive.GetValue()
+
+	switch pp.ImportSource {
+	case ControllerTypeMikrotik:
+		extras := MikrotikPeerExtras{
+			Id:              "",
+			Name:            p.DisplayName,
+			Comment:         p.Notes,
+			IsResponder:     false,
+			Disabled:        p.IsDisabled(),
+			ClientEndpoint:  p.Endpoint.GetValue(),
+			ClientAddress:   CidrsToString(p.Interface.Addresses),
+			ClientDns:       p.Interface.DnsStr.GetValue(),
+			ClientKeepalive: p.PersistentKeepalive.GetValue(),
+		}
+		pp.SetExtras(extras)
+	case ControllerTypeLocal:
+		extras := LocalPeerExtras{
+			Disabled: p.IsDisabled(),
+		}
+		pp.SetExtras(extras)
+	}
 }
 
 type PeerCreationRequest struct {

internal/domain/statistics.go

@@ -1,6 +1,8 @@
 package domain
 
-import "time"
+import (
+	"time"
+)
 
 type PeerStatus struct {
 	PeerId    PeerIdentifier `gorm:"primaryKey;column:identifier" json:"PeerId"`
@@ -37,3 +39,25 @@ type InterfaceStatus struct {
 	BytesReceived    uint64 `gorm:"column:received"`
 	BytesTransmitted uint64 `gorm:"column:transmitted"`
 }
+
+type PingerResult struct {
+	PacketsRecv int
+	PacketsSent int
+	Rtts        []time.Duration
+}
+
+func (r PingerResult) IsPingable() bool {
+	return r.PacketsRecv > 0 && r.PacketsSent > 0 && len(r.Rtts) > 0
+}
+
+func (r PingerResult) AverageRtt() time.Duration {
+	if len(r.Rtts) == 0 {
+		return 0
+	}
+
+	var total time.Duration
+	for _, rtt := range r.Rtts {
+		total += rtt
+	}
+	return total / time.Duration(len(r.Rtts))
+}

internal/logger.go

@@ -12,8 +12,8 @@ import (
 	"sync"
 )
 
-// SetupLogging initializes the global logger with the given level and format
-func SetupLogging(level string, pretty, json bool) {
+// GetLoggingHandler initializes a slog.Handler based on the provided logging level and format options.
+func GetLoggingHandler(level string, pretty, json bool) slog.Handler {
 	var logLevel = new(slog.LevelVar)
 
 	switch strings.ToLower(level) {
@@ -46,6 +46,13 @@ func SetupLogging(level string, pretty, json bool) {
 		handler = slog.NewTextHandler(output, opts)
 	}
 
+	return handler
+}
+
+// SetupLogging initializes the global logger with the given level and format
+func SetupLogging(level string, pretty, json bool) {
+	handler := GetLoggingHandler(level, pretty, json)
+
 	logger := slog.New(handler)
 
 	slog.SetDefault(logger)

internal/lowlevel/mikrotik.go

@@ -0,0 +1,435 @@
+package lowlevel
+
+import (
+	"bytes"
+	"context"
+	"crypto/tls"
+	"encoding/json"
+	"fmt"
+	"io"
+	"log/slog"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/h44z/wg-portal/internal"
+	"github.com/h44z/wg-portal/internal/config"
+)
+
+// region models
+
+const (
+	MikrotikApiStatusOk    = "success"
+	MikrotikApiStatusError = "error"
+)
+
+const (
+	MikrotikApiErrorCodeUnknown = iota + 600
+	MikrotikApiErrorCodeRequestPreparationFailed
+	MikrotikApiErrorCodeRequestFailed
+	MikrotikApiErrorCodeResponseDecodeFailed
+)
+
+type MikrotikApiResponse[T any] struct {
+	Status string
+	Code   int
+	Data   T                 `json:"data,omitempty"`
+	Error  *MikrotikApiError `json:"error,omitempty"`
+}
+
+type MikrotikApiError struct {
+	Code    int    `json:"error,omitempty"`
+	Message string `json:"message,omitempty"`
+	Details string `json:"detail,omitempty"`
+}
+
+func (e *MikrotikApiError) String() string {
+	if e == nil {
+		return "no error"
+	}
+	return fmt.Sprintf("API error %d: %s - %s", e.Code, e.Message, e.Details)
+}
+
+type GenericJsonObject map[string]any
+type EmptyResponse struct{}
+
+func (JsonObject GenericJsonObject) GetString(key string) string {
+	if value, ok := JsonObject[key]; ok {
+		if strValue, ok := value.(string); ok {
+			return strValue
+		} else {
+			return fmt.Sprintf("%v", value) // Convert to string if not already
+		}
+	}
+	return ""
+}
+
+func (JsonObject GenericJsonObject) GetInt(key string) int {
+	if value, ok := JsonObject[key]; ok {
+		if intValue, ok := value.(int); ok {
+			return intValue
+		} else {
+			if floatValue, ok := value.(float64); ok {
+				return int(floatValue) // Convert float64 to int
+			}
+			if strValue, ok := value.(string); ok {
+				if intValue, err := strconv.Atoi(strValue); err == nil {
+					return intValue // Convert string to int if possible
+				}
+			}
+		}
+	}
+	return 0
+}
+
+func (JsonObject GenericJsonObject) GetBool(key string) bool {
+	if value, ok := JsonObject[key]; ok {
+		if boolValue, ok := value.(bool); ok {
+			return boolValue
+		} else {
+			if intValue, ok := value.(int); ok {
+				return intValue == 1 // Convert int to bool (1 is true, 0 is false)
+			}
+			if floatValue, ok := value.(float64); ok {
+				return int(floatValue) == 1 // Convert float64 to bool (1.0 is true, 0.0 is false)
+			}
+			if strValue, ok := value.(string); ok {
+				boolValue, err := strconv.ParseBool(strValue)
+				if err == nil {
+					return boolValue
+				}
+			}
+		}
+	}
+	return false
+}
+
+type MikrotikRequestOptions struct {
+	Filters  map[string]string `json:"filters,omitempty"`
+	PropList []string          `json:"proplist,omitempty"`
+}
+
+func (o *MikrotikRequestOptions) GetPath(base string) string {
+	if o == nil {
+		return base
+	}
+
+	path, err := url.Parse(base)
+	if err != nil {
+		return base
+	}
+
+	query := path.Query()
+	for k, v := range o.Filters {
+		query.Set(k, v)
+	}
+	if len(o.PropList) > 0 {
+		query.Set(".proplist", strings.Join(o.PropList, ","))
+	}
+	path.RawQuery = query.Encode()
+	return path.String()
+}
+
+// region models
+
+// region API-client
+
+type MikrotikApiClient struct {
+	coreCfg *config.Config
+	cfg     *config.BackendMikrotik
+
+	client *http.Client
+	log    *slog.Logger
+}
+
+func NewMikrotikApiClient(coreCfg *config.Config, cfg *config.BackendMikrotik) (*MikrotikApiClient, error) {
+	c := &MikrotikApiClient{
+		coreCfg: coreCfg,
+		cfg:     cfg,
+	}
+
+	err := c.setup()
+	if err != nil {
+		return nil, err
+	}
+
+	c.debugLog("Mikrotik api client created", "api_url", cfg.ApiUrl)
+
+	return c, nil
+}
+
+func (m *MikrotikApiClient) setup() error {
+	m.client = &http.Client{
+		Transport: &http.Transport{
+			TLSClientConfig: &tls.Config{
+				InsecureSkipVerify: !m.cfg.ApiVerifyTls,
+			},
+		},
+		Timeout: m.cfg.GetApiTimeout(),
+	}
+
+	if m.cfg.Debug {
+		m.log = slog.New(internal.GetLoggingHandler("debug",
+			m.coreCfg.Advanced.LogPretty,
+			m.coreCfg.Advanced.LogJson).
+			WithAttrs([]slog.Attr{
+				{
+					Key: "mikrotik-bid", Value: slog.StringValue(m.cfg.Id),
+				},
+			}))
+	}
+
+	return nil
+}
+
+func (m *MikrotikApiClient) debugLog(msg string, args ...any) {
+	if m.log != nil {
+		m.log.Debug("[MT-API] "+msg, args...)
+	}
+}
+
+func (m *MikrotikApiClient) getFullPath(command string) string {
+	path, err := url.JoinPath(m.cfg.ApiUrl, command)
+	if err != nil {
+		return ""
+	}
+	return path
+}
+
+func (m *MikrotikApiClient) prepareGetRequest(ctx context.Context, fullUrl string) (*http.Request, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, fullUrl, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+	req.Header.Set("Accept", "application/json")
+	if m.cfg.ApiUser != "" && m.cfg.ApiPassword != "" {
+		req.SetBasicAuth(m.cfg.ApiUser, m.cfg.ApiPassword)
+	}
+
+	return req, nil
+}
+
+func (m *MikrotikApiClient) prepareDeleteRequest(ctx context.Context, fullUrl string) (*http.Request, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodDelete, fullUrl, nil)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+	req.Header.Set("Accept", "application/json")
+	if m.cfg.ApiUser != "" && m.cfg.ApiPassword != "" {
+		req.SetBasicAuth(m.cfg.ApiUser, m.cfg.ApiPassword)
+	}
+
+	return req, nil
+}
+
+func (m *MikrotikApiClient) preparePayloadRequest(
+	ctx context.Context,
+	method string,
+	fullUrl string,
+	payload GenericJsonObject,
+) (*http.Request, error) {
+	// marshal the payload to JSON
+	payloadBytes, err := json.Marshal(payload)
+	if err != nil {
+		return nil, fmt.Errorf("failed to marshal payload: %w", err)
+	}
+
+	req, err := http.NewRequestWithContext(ctx, method, fullUrl, bytes.NewReader(payloadBytes))
+	if err != nil {
+		return nil, fmt.Errorf("failed to create request: %w", err)
+	}
+	req.Header.Set("Accept", "application/json")
+	req.Header.Set("Content-Type", "application/json")
+	if m.cfg.ApiUser != "" && m.cfg.ApiPassword != "" {
+		req.SetBasicAuth(m.cfg.ApiUser, m.cfg.ApiPassword)
+	}
+
+	return req, nil
+}
+
+func errToApiResponse[T any](code int, message string, err error) MikrotikApiResponse[T] {
+	return MikrotikApiResponse[T]{
+		Status: MikrotikApiStatusError,
+		Code:   code,
+		Error: &MikrotikApiError{
+			Code:    code,
+			Message: message,
+			Details: err.Error(),
+		},
+	}
+}
+
+func parseHttpResponse[T any](resp *http.Response, err error) MikrotikApiResponse[T] {
+	if err != nil {
+		return errToApiResponse[T](MikrotikApiErrorCodeRequestFailed, "failed to execute request", err)
+	}
+
+	defer func(Body io.ReadCloser) {
+		err := Body.Close()
+		if err != nil {
+			slog.Error("failed to close response body", "error", err)
+		}
+	}(resp.Body)
+
+	if resp.StatusCode >= 200 && resp.StatusCode < 300 {
+		var data T
+
+		// if the type of T is EmptyResponse, we can return an empty response with just the status
+		if _, ok := any(data).(EmptyResponse); ok {
+			return MikrotikApiResponse[T]{Status: MikrotikApiStatusOk, Code: resp.StatusCode}
+		}
+
+		if err := json.NewDecoder(resp.Body).Decode(&data); err != nil {
+			return errToApiResponse[T](MikrotikApiErrorCodeResponseDecodeFailed, "failed to decode response", err)
+		}
+		return MikrotikApiResponse[T]{Status: MikrotikApiStatusOk, Code: resp.StatusCode, Data: data}
+	}
+
+	var apiErr MikrotikApiError
+	if err := json.NewDecoder(resp.Body).Decode(&apiErr); err != nil {
+		return errToApiResponse[T](resp.StatusCode, "unknown error, unparsable response", err)
+	} else {
+		return MikrotikApiResponse[T]{Status: MikrotikApiStatusError, Code: resp.StatusCode, Error: &apiErr}
+	}
+}
+
+func (m *MikrotikApiClient) Query(
+	ctx context.Context,
+	command string,
+	opts *MikrotikRequestOptions,
+) MikrotikApiResponse[[]GenericJsonObject] {
+	apiCtx, cancel := context.WithTimeout(ctx, m.cfg.GetApiTimeout())
+	defer cancel()
+
+	fullUrl := opts.GetPath(m.getFullPath(command))
+
+	req, err := m.prepareGetRequest(apiCtx, fullUrl)
+	if err != nil {
+		return errToApiResponse[[]GenericJsonObject](MikrotikApiErrorCodeRequestPreparationFailed,
+			"failed to create request", err)
+	}
+
+	start := time.Now()
+	m.debugLog("executing API query", "url", fullUrl)
+	response := parseHttpResponse[[]GenericJsonObject](m.client.Do(req))
+	m.debugLog("retrieved API query result", "url", fullUrl, "duration", time.Since(start).String())
+	return response
+}
+
+func (m *MikrotikApiClient) Get(
+	ctx context.Context,
+	command string,
+	opts *MikrotikRequestOptions,
+) MikrotikApiResponse[GenericJsonObject] {
+	apiCtx, cancel := context.WithTimeout(ctx, m.cfg.GetApiTimeout())
+	defer cancel()
+
+	fullUrl := opts.GetPath(m.getFullPath(command))
+
+	req, err := m.prepareGetRequest(apiCtx, fullUrl)
+	if err != nil {
+		return errToApiResponse[GenericJsonObject](MikrotikApiErrorCodeRequestPreparationFailed,
+			"failed to create request", err)
+	}
+
+	start := time.Now()
+	m.debugLog("executing API get", "url", fullUrl)
+	response := parseHttpResponse[GenericJsonObject](m.client.Do(req))
+	m.debugLog("retrieved API get result", "url", fullUrl, "duration", time.Since(start).String())
+	return response
+}
+
+func (m *MikrotikApiClient) Create(
+	ctx context.Context,
+	command string,
+	payload GenericJsonObject,
+) MikrotikApiResponse[GenericJsonObject] {
+	apiCtx, cancel := context.WithTimeout(ctx, m.cfg.GetApiTimeout())
+	defer cancel()
+
+	fullUrl := m.getFullPath(command)
+
+	req, err := m.preparePayloadRequest(apiCtx, http.MethodPut, fullUrl, payload)
+	if err != nil {
+		return errToApiResponse[GenericJsonObject](MikrotikApiErrorCodeRequestPreparationFailed,
+			"failed to create request", err)
+	}
+
+	start := time.Now()
+	m.debugLog("executing API put", "url", fullUrl)
+	response := parseHttpResponse[GenericJsonObject](m.client.Do(req))
+	m.debugLog("retrieved API put result", "url", fullUrl, "duration", time.Since(start).String())
+	return response
+}
+
+func (m *MikrotikApiClient) Update(
+	ctx context.Context,
+	command string,
+	payload GenericJsonObject,
+) MikrotikApiResponse[GenericJsonObject] {
+	apiCtx, cancel := context.WithTimeout(ctx, m.cfg.GetApiTimeout())
+	defer cancel()
+
+	fullUrl := m.getFullPath(command)
+
+	req, err := m.preparePayloadRequest(apiCtx, http.MethodPatch, fullUrl, payload)
+	if err != nil {
+		return errToApiResponse[GenericJsonObject](MikrotikApiErrorCodeRequestPreparationFailed,
+			"failed to create request", err)
+	}
+
+	start := time.Now()
+	m.debugLog("executing API patch", "url", fullUrl)
+	response := parseHttpResponse[GenericJsonObject](m.client.Do(req))
+	m.debugLog("retrieved API patch result", "url", fullUrl, "duration", time.Since(start).String())
+	return response
+}
+
+func (m *MikrotikApiClient) Delete(
+	ctx context.Context,
+	command string,
+) MikrotikApiResponse[EmptyResponse] {
+	apiCtx, cancel := context.WithTimeout(ctx, m.cfg.GetApiTimeout())
+	defer cancel()
+
+	fullUrl := m.getFullPath(command)
+
+	req, err := m.prepareDeleteRequest(apiCtx, fullUrl)
+	if err != nil {
+		return errToApiResponse[EmptyResponse](MikrotikApiErrorCodeRequestPreparationFailed,
+			"failed to create request", err)
+	}
+
+	start := time.Now()
+	m.debugLog("executing API delete", "url", fullUrl)
+	response := parseHttpResponse[EmptyResponse](m.client.Do(req))
+	m.debugLog("retrieved API delete result", "url", fullUrl, "duration", time.Since(start).String())
+	return response
+}
+
+func (m *MikrotikApiClient) ExecList(
+	ctx context.Context,
+	command string,
+	payload GenericJsonObject,
+) MikrotikApiResponse[[]GenericJsonObject] {
+	apiCtx, cancel := context.WithTimeout(ctx, m.cfg.GetApiTimeout())
+	defer cancel()
+
+	fullUrl := m.getFullPath(command)
+
+	req, err := m.preparePayloadRequest(apiCtx, http.MethodPost, fullUrl, payload)
+	if err != nil {
+		return errToApiResponse[[]GenericJsonObject](MikrotikApiErrorCodeRequestPreparationFailed,
+			"failed to create request", err)
+	}
+
+	start := time.Now()
+	m.debugLog("executing API post", "url", fullUrl)
+	response := parseHttpResponse[[]GenericJsonObject](m.client.Do(req))
+	m.debugLog("retrieved API post result", "url", fullUrl, "duration", time.Since(start).String())
+	return response
+}
+
+// endregion API-client

mkdocs.yml

@@ -80,6 +80,7 @@ nav:
           - Examples: documentation/configuration/examples.md
       - Usage:
           - General: documentation/usage/general.md
+          - Backends: documentation/usage/backends.md
           - LDAP: documentation/usage/ldap.md
           - Security: documentation/usage/security.md
           - Webhooks: documentation/usage/webhooks.md