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package org.pacien.tincapp.context
import android.os.Environment
import java.io.File
import java.io.FileNotFoundException
/**
* @author pacien
*
* @implNote Logs and PID files are stored in the cache directory for easy clean up.
*/
object AppPaths {
private val TINCD_BIN = "libtincd.so"
private val TINC_BIN = "libtinc.so"
private val LOGFILE_FORMAT = "tinc.%s.log"
private val PIDFILE_FORMAT = "tinc.%s.pid"
private val NET_CONF_FILE = "network.conf"
private val NET_TINC_CONF_FILE = "tinc.conf"
private val NET_HOSTS_DIR = "hosts"
private val NET_INVITATION_FILE = "invitation-data"
private val NET_DEFAULT_ED25519_PRIVATE_KEY_FILE = "ed25519_key.priv"
private val NET_DEFAULT_RSA_PRIVATE_KEY_FILE = "rsa_key.priv"
fun storageAvailable() =
Environment.getExternalStorageState().let { it == Environment.MEDIA_MOUNTED && it != Environment.MEDIA_MOUNTED_READ_ONLY }
fun cacheDir() = App.getContext().externalCacheDir
fun confDir() = App.getContext().getExternalFilesDir(null)
fun binDir() = File(App.getContext().applicationInfo.nativeLibraryDir)
fun confDir(netName: String) = File(confDir(), netName)
fun hostsDir(netName: String) = File(confDir(netName), NET_HOSTS_DIR)
fun netConfFile(netName: String) = File(confDir(netName), NET_CONF_FILE)
fun tincConfFile(netName: String) = File(confDir(netName), NET_TINC_CONF_FILE)
fun invitationFile(netName: String) = File(confDir(netName), NET_INVITATION_FILE)
fun logFile(netName: String) = File(cacheDir(), String.format(LOGFILE_FORMAT, netName))
fun pidFile(netName: String) = File(App.getContext().cacheDir, String.format(PIDFILE_FORMAT, netName))
fun existing(f: File) = f.apply { if (!exists()) throw FileNotFoundException(f.absolutePath) }
fun defaultEd25519PrivateKeyFile(netName: String) = File(confDir(netName), NET_DEFAULT_ED25519_PRIVATE_KEY_FILE)
fun defaultRsaPrivateKeyFile(netName: String) = File(confDir(netName), NET_DEFAULT_RSA_PRIVATE_KEY_FILE)
fun tincd() = File(binDir(), TINCD_BIN)
fun tinc() = File(binDir(), TINC_BIN)
}
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