1 files changed, 71 insertions, 0 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/context/AppPaths.kt b/app/src/main/java/org/pacien/tincapp/context/AppPaths.kt
new file mode 100644
index 0000000..0b85565
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/context/AppPaths.kt
@@ -0,0 +1,71 @@
+/*
+ * 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.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 const val TINCD_BIN = "libtincd.so"
+  private const val TINC_BIN = "libtinc.so"
+
+  private const val APPLOG_FILE = "tincapp.log"
+  private const val CRASHFLAG_FILE = "crash.flag"
+  private const val LOGFILE_FORMAT = "tinc.%s.log"
+  private const val PIDFILE_FORMAT = "tinc.%s.pid"
+
+  private const val NET_CONF_FILE = "network.conf"
+  private const val NET_TINC_CONF_FILE = "tinc.conf"
+  private const val NET_HOSTS_DIR = "hosts"
+  private const val NET_INVITATION_FILE = "invitation-data"
+  private const val NET_DEFAULT_ED25519_PRIVATE_KEY_FILE = "ed25519_key.priv"
+  private const 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 }
+
+  private fun internalCacheDir() = App.getContext().cacheDir!!
+  fun cacheDir() = App.getContext().externalCacheDir!!
+  fun confDir() = App.getContext().getExternalFilesDir(null)!!
+  private 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 appLogFile() = File(cacheDir(), APPLOG_FILE)
+  fun crashFlagFile() = File(internalCacheDir(), CRASHFLAG_FILE)
+
+  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)
+}