1 files changed, 201 insertions, 0 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/activities/StartActivity.kt b/app/src/main/java/org/pacien/tincapp/activities/StartActivity.kt
new file mode 100644
index 0000000..50e002f
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/activities/StartActivity.kt
@@ -0,0 +1,201 @@
+/*
+ * 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.activities
+
+import android.app.Activity
+import android.content.Intent
+import android.net.VpnService
+import android.os.Bundle
+import android.support.v4.widget.SwipeRefreshLayout
+import android.support.v7.app.AlertDialog
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import android.widget.AdapterView
+import android.widget.ArrayAdapter
+import android.widget.TextView
+import kotlinx.android.synthetic.main.base.*
+import kotlinx.android.synthetic.main.dialog_decrypt_keys.view.*
+import kotlinx.android.synthetic.main.fragment_list_view.*
+import kotlinx.android.synthetic.main.fragment_network_list_header.*
+import org.pacien.tincapp.R
+import org.pacien.tincapp.context.AppPaths
+import org.pacien.tincapp.extensions.Android.setElements
+import org.pacien.tincapp.intent.Actions
+import org.pacien.tincapp.intent.BroadcastMapper
+import org.pacien.tincapp.service.TincVpnService
+import org.pacien.tincapp.utils.TincKeyring
+
+/**
+ * @author pacien
+ */
+class StartActivity : BaseActivity() {
+  companion object {
+    private const val PERMISSION_REQUEST = 0
+  }
+
+  private val networkList = object : AdapterView.OnItemClickListener, SwipeRefreshLayout.OnRefreshListener {
+    private var networkListAdapter: ArrayAdapter<String>? = null
+
+    fun init() {
+      networkListAdapter = ArrayAdapter(this@StartActivity, R.layout.fragment_list_item)
+      layoutInflater.inflate(R.layout.fragment_list_view, main_content)
+      list_wrapper.setOnRefreshListener(this)
+      list.addHeaderView(layoutInflater.inflate(R.layout.fragment_network_list_header, list, false), null, false)
+      list.addFooterView(View(this@StartActivity), null, false)
+      list.adapter = networkListAdapter
+      list.onItemClickListener = this
+    }
+
+    fun destroy() {
+      networkListAdapter = null
+    }
+
+    override fun onRefresh() {
+      val networks = AppPaths.confDir().list()?.sorted() ?: emptyList()
+      runOnUiThread {
+        networkListAdapter?.setElements(networks)
+        setPlaceholderVisibility()
+        list_wrapper.isRefreshing = false
+      }
+    }
+
+    override fun onItemClick(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
+      connectionStarter.tryStart(netName = (view as TextView).text.toString(), displayStatus = true)
+    }
+
+    private fun setPlaceholderVisibility() = if (networkListAdapter?.isEmpty != false) {
+      network_list_placeholder.text = getListPlaceholderText()
+      network_list_placeholder.visibility = View.VISIBLE
+    } else {
+      network_list_placeholder.visibility = View.GONE
+    }
+
+    private fun getListPlaceholderText() = if (!AppPaths.storageAvailable()) {
+      getText(R.string.message_storage_unavailable)
+    } else {
+      getText(R.string.message_no_network_configuration_found)
+    }
+  }
+
+  private val connectionStarter = object {
+    private var netName: String? = null
+    private var passphrase: String? = null
+    private var displayStatus = false
+
+    fun displayStatus() = displayStatus
+
+    fun tryStart(netName: String? = null, passphrase: String? = null, displayStatus: Boolean? = null) {
+      if (netName != null) this.netName = netName
+      this.passphrase = passphrase
+      if (displayStatus != null) this.displayStatus = displayStatus
+
+      val permissionRequestIntent = VpnService.prepare(this@StartActivity)
+      if (permissionRequestIntent != null)
+        return startActivityForResult(permissionRequestIntent, PERMISSION_REQUEST)
+
+      if (TincKeyring.needsPassphrase(this.netName!!) && this.passphrase == null)
+        return askForPassphrase()
+
+      startVpn(this.netName!!, this.passphrase)
+    }
+
+    private fun askForPassphrase() {
+      layoutInflater.inflate(R.layout.dialog_decrypt_keys, main_content, false).let { dialog ->
+        AlertDialog.Builder(this@StartActivity)
+          .setTitle(R.string.title_unlock_private_keys).setView(dialog)
+          .setPositiveButton(R.string.action_unlock) { _, _ -> tryStart(passphrase = dialog.passphrase.text.toString()) }
+          .setNegativeButton(R.string.action_cancel) { _, _ -> Unit }
+          .show()
+      }
+    }
+
+    private fun startVpn(netName: String, passphrase: String? = null) {
+      connectDialog = showProgressDialog(R.string.message_starting_vpn)
+      TincVpnService.connect(netName, passphrase)
+    }
+  }
+
+  private val broadcastMapper = BroadcastMapper(mapOf(
+    Actions.EVENT_CONNECTED to this::onVpnStart,
+    Actions.EVENT_ABORTED to this::onVpnStartError))
+
+  private var connectDialog: AlertDialog? = null
+
+  override fun onCreate(savedInstanceState: Bundle?) {
+    super.onCreate(savedInstanceState)
+    networkList.init()
+
+    if (intent.action == Actions.ACTION_CONNECT && intent.data?.schemeSpecificPart != null)
+      connectionStarter.tryStart(intent.data.schemeSpecificPart, intent.data.fragment, false)
+  }
+
+  override fun onCreateOptionsMenu(m: Menu): Boolean {
+    menuInflater.inflate(R.menu.menu_start, m)
+    return super.onCreateOptionsMenu(m)
+  }
+
+  override fun onDestroy() {
+    networkList.destroy()
+    connectDialog?.dismiss()
+    super.onDestroy()
+  }
+
+  override fun onStart() {
+    super.onStart()
+    networkList.onRefresh()
+  }
+
+  override fun onResume() {
+    super.onResume()
+    if (TincVpnService.isConnected()) openStatusActivity(false)
+    broadcastMapper.register()
+    handleRecentCrash()
+  }
+
+  override fun onPause() {
+    broadcastMapper.unregister()
+    super.onPause()
+  }
+
+  override fun onActivityResult(request: Int, result: Int, data: Intent?): Unit = when (request) {
+    PERMISSION_REQUEST -> if (result == Activity.RESULT_OK) connectionStarter.tryStart() else Unit
+    else -> throw IllegalArgumentException("Result for unknown request received.")
+  }
+
+  fun openConfigureActivity(@Suppress("UNUSED_PARAMETER") i: MenuItem) =
+    startActivity(Intent(this, ConfigureActivity::class.java))
+
+  private fun onVpnStart() {
+    connectDialog?.dismiss()
+    if (connectionStarter.displayStatus()) openStatusActivity()
+    finish()
+  }
+
+  private fun onVpnStartError() {
+    connectDialog?.dismiss()
+  }
+
+  private fun openStatusActivity(transition: Boolean = true) =
+    startActivity(
+      Intent(this, StatusActivity::class.java)
+        .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)
+        .apply { if (!transition) addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION) })
+}