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/*
* 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) })
}
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