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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.commands
import org.pacien.tincapp.R
import org.pacien.tincapp.commands.Executor.runAsyncTask
import org.pacien.tincapp.context.App
import org.pacien.tincapp.context.AppPaths
import org.pacien.tincapp.data.TincConfiguration
import org.pacien.tincapp.data.VpnInterfaceConfiguration
import org.pacien.tincapp.utils.PemUtils
import java.io.FileNotFoundException
/**
* @author pacien
*/
object TincApp {
private val SCRIPT_SUFFIXES = listOf("-up", "-down", "-created", "-accepted")
private val STATIC_SCRIPTS = listOf("tinc", "host", "subnet", "invitation").flatMap { s -> SCRIPT_SUFFIXES.map { s + it } }
private fun listScripts(netName: String) = AppPaths.confDir(netName).listFiles { f -> f.name in STATIC_SCRIPTS } +
AppPaths.hostsDir(netName).listFiles { f -> SCRIPT_SUFFIXES.any { f.name.endsWith(it) } }
fun listPrivateKeys(netName: String) = try {
TincConfiguration.fromTincConfiguration(AppPaths.existing(AppPaths.tincConfFile(netName))).let {
listOf(
it.privateKeyFile ?: AppPaths.defaultRsaPrivateKeyFile(netName),
it.ed25519PrivateKeyFile ?: AppPaths.defaultEd25519PrivateKeyFile(netName))
}
} catch (e: FileNotFoundException) {
throw FileNotFoundException(App.getResources().getString(R.string.notification_error_message_network_config_not_found_format, e.message!!))
}
fun removeScripts(netName: String) = runAsyncTask {
listScripts(netName).forEach { it.delete() }
}
fun generateIfaceCfg(netName: String) = runAsyncTask {
VpnInterfaceConfiguration
.fromInvitation(AppPaths.invitationFile(netName))
.write(AppPaths.netConfFile(netName))
}
fun generateIfaceCfgTemplate(netName: String) = runAsyncTask {
App.getResources().openRawResource(R.raw.network).use { inputStream ->
AppPaths.netConfFile(netName).outputStream().use { inputStream.copyTo(it) }
}
}
fun setPassphrase(netName: String, currentPassphrase: String? = null, newPassphrase: String?) = runAsyncTask {
listPrivateKeys(netName)
.filter { it.exists() }
.map { Pair(PemUtils.read(it), it) }
.map { Pair(PemUtils.decrypt(it.first, currentPassphrase), it.second) }
.map { Pair(if (newPassphrase?.isNotEmpty() == true) PemUtils.encrypt(it.first, newPassphrase) else it.first, it.second) }
.forEach { PemUtils.write(it.first, it.second.writer()) }
}
}
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