1 files changed, 60 insertions, 0 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/service/ConnectivityChangeReceiver.kt b/app/src/main/java/org/pacien/tincapp/service/ConnectivityChangeReceiver.kt
new file mode 100644
index 0000000..ba9aa95
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+++ b/app/src/main/java/org/pacien/tincapp/service/ConnectivityChangeReceiver.kt
@@ -0,0 +1,60 @@
+/*
+ * Tinc App, an Android binding and user interface for the tinc mesh VPN daemon
+ * Copyright (C) 2017-2018 Pacien TRAN-GIRARD
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package org.pacien.tincapp.service
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.net.ConnectivityManager
+import org.pacien.tincapp.commands.Tinc
+import org.slf4j.LoggerFactory
+
+/**
+ * @author pacien
+ */
+object ConnectivityChangeReceiver : BroadcastReceiver() {
+  private val log by lazy { LoggerFactory.getLogger(this.javaClass)!! }
+  private val tincCtl = Tinc
+  private val tincVpnService = TincVpnService
+
+  override fun onReceive(context: Context, intent: Intent) {
+    log.info("Connectivity change intent received: {}", intent.toString())
+    if (isNetworkAvailable(intent)) attemptReconnect()
+  }
+
+  private fun attemptReconnect() {
+    tincVpnService.getCurrentNetName()?.let { netName ->
+      log.info("Sending immediate reconnection request to the tinc daemon.")
+      tincCtl.retry(netName)
+    }
+  }
+
+  private fun isNetworkAvailable(intent: Intent) =
+    !intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false)
+
+  fun registerWatcher(context: Context) {
+    val filter = IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION)
+    context.registerReceiver(this, filter)
+  }
+
+  fun unregisterWatcher(context: Context) {
+    context.unregisterReceiver(this)
+  }
+}