ui: Convert configStore package to Kotlin

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

1 files changed, 79 insertions, 0 deletions

diff --git a/ui/src/main/java/com/wireguard/android/configStore/FileConfigStore.kt b/ui/src/main/java/com/wireguard/android/configStore/FileConfigStore.kt
new file mode 100644
index 00000000..c8d47b40
--- /dev/null
+++ b/ui/src/main/java/com/wireguard/android/configStore/FileConfigStore.kt
@@ -0,0 +1,79 @@
+/*
+ * Copyright © 2017-2019 WireGuard LLC. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+package com.wireguard.android.configStore
+
+import android.content.Context
+import android.util.Log
+import com.wireguard.android.R
+import com.wireguard.config.BadConfigException
+import com.wireguard.config.Config
+import java.io.File
+import java.io.FileInputStream
+import java.io.FileNotFoundException
+import java.io.FileOutputStream
+import java.io.IOException
+import java.nio.charset.StandardCharsets
+
+/**
+ * Configuration store that uses a `wg-quick`-style file for each configured tunnel.
+ */
+class FileConfigStore(private val context: Context) : ConfigStore {
+    @Throws(IOException::class)
+    override fun create(name: String, config: Config): Config {
+        Log.d(TAG, "Creating configuration for tunnel $name")
+        val file = fileFor(name)
+        if (!file.createNewFile()) throw IOException(context.getString(R.string.config_file_exists_error, file.name))
+        FileOutputStream(file, false).use { stream -> stream.write(config.toWgQuickString().toByteArray(StandardCharsets.UTF_8)) }
+        return config
+    }
+
+    @Throws(IOException::class)
+    override fun delete(name: String) {
+        Log.d(TAG, "Deleting configuration for tunnel $name")
+        val file = fileFor(name)
+        if (!file.delete()) throw IOException(context.getString(R.string.config_delete_error, file.name))
+    }
+
+    override fun enumerate(): Set<String> {
+        return context.fileList()
+                .filter { it.endsWith(".conf") }
+                .map { it.substring(0, it.length - ".conf".length) }
+                .toSet()
+    }
+
+    private fun fileFor(name: String): File {
+        return File(context.filesDir, "$name.conf")
+    }
+
+    @Throws(BadConfigException::class, IOException::class)
+    override fun load(name: String): Config {
+        FileInputStream(fileFor(name)).use { stream -> return Config.parse(stream) }
+    }
+
+    @Throws(IOException::class)
+    override fun rename(name: String, replacement: String) {
+        Log.d(TAG, "Renaming configuration for tunnel $name to $replacement")
+        val file = fileFor(name)
+        val replacementFile = fileFor(replacement)
+        if (!replacementFile.createNewFile()) throw IOException(context.getString(R.string.config_exists_error, replacement))
+        if (!file.renameTo(replacementFile)) {
+            if (!replacementFile.delete()) Log.w(TAG, "Couldn't delete marker file for new name $replacement")
+            throw IOException(context.getString(R.string.config_rename_error, file.name))
+        }
+    }
+
+    @Throws(IOException::class)
+    override fun save(name: String, config: Config): Config {
+        Log.d(TAG, "Saving configuration for tunnel $name")
+        val file = fileFor(name)
+        if (!file.isFile) throw FileNotFoundException(context.getString(R.string.config_not_found_error, file.name))
+        FileOutputStream(file, false).use { stream -> stream.write(config.toWgQuickString().toByteArray(StandardCharsets.UTF_8)) }
+        return config
+    }
+
+    companion object {
+        private val TAG = "WireGuard/" + FileConfigStore::class.java.simpleName
+    }
+}