152 lines
6.4 KiB
Kotlin
152 lines
6.4 KiB
Kotlin
/*
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* Copyright © 2017-2023 WireGuard LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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package com.wireguard.android.util
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import android.content.ContentResolver
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import android.net.Uri
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import android.provider.OpenableColumns
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import android.util.Log
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import androidx.fragment.app.FragmentManager
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import com.wireguard.android.Application
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import com.wireguard.android.R
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import com.wireguard.android.fragment.ConfigNamingDialogFragment
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import com.wireguard.android.model.ObservableTunnel
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import com.wireguard.config.Config
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import kotlinx.coroutines.Deferred
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import kotlinx.coroutines.Dispatchers
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import kotlinx.coroutines.SupervisorJob
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import kotlinx.coroutines.async
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import kotlinx.coroutines.withContext
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import java.io.BufferedReader
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import java.io.ByteArrayInputStream
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import java.io.InputStreamReader
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import java.nio.charset.StandardCharsets
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import java.util.zip.ZipEntry
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import java.util.zip.ZipInputStream
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object TunnelImporter {
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suspend fun importTunnel(contentResolver: ContentResolver, uri: Uri, messageCallback: (CharSequence) -> Unit) = withContext(Dispatchers.IO) {
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val context = Application.get().applicationContext
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val futureTunnels = ArrayList<Deferred<ObservableTunnel>>()
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val throwables = ArrayList<Throwable>()
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try {
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val columns = arrayOf(OpenableColumns.DISPLAY_NAME)
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var name = ""
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contentResolver.query(uri, columns, null, null, null)?.use { cursor ->
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if (cursor.moveToFirst() && !cursor.isNull(0)) {
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name = cursor.getString(0)
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}
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}
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if (name.isEmpty()) {
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name = Uri.decode(uri.lastPathSegment)
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}
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var idx = name.lastIndexOf('/')
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if (idx >= 0) {
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require(idx < name.length - 1) { context.getString(R.string.illegal_filename_error, name) }
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name = name.substring(idx + 1)
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}
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val isZip = name.lowercase().endsWith(".zip")
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if (name.lowercase().endsWith(".conf")) {
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name = name.substring(0, name.length - ".conf".length)
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} else {
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require(isZip) { context.getString(R.string.bad_extension_error) }
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}
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if (isZip) {
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ZipInputStream(contentResolver.openInputStream(uri)).use { zip ->
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val reader = BufferedReader(InputStreamReader(zip, StandardCharsets.UTF_8))
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var entry: ZipEntry?
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while (true) {
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entry = zip.nextEntry ?: break
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name = entry.name
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idx = name.lastIndexOf('/')
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if (idx >= 0) {
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if (idx >= name.length - 1) {
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continue
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}
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name = name.substring(name.lastIndexOf('/') + 1)
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}
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if (name.lowercase().endsWith(".conf")) {
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name = name.substring(0, name.length - ".conf".length)
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} else {
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continue
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}
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try {
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Config.parse(reader)
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} catch (e: Throwable) {
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throwables.add(e)
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null
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}?.let {
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val nameCopy = name
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futureTunnels.add(async(SupervisorJob()) { Application.getTunnelManager().create(nameCopy, it) })
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}
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}
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}
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} else {
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futureTunnels.add(async(SupervisorJob()) { Application.getTunnelManager().create(name, Config.parse(contentResolver.openInputStream(uri)!!)) })
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}
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if (futureTunnels.isEmpty()) {
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if (throwables.size == 1) {
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throw throwables[0]
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} else {
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require(throwables.isNotEmpty()) { context.getString(R.string.no_configs_error) }
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}
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}
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val tunnels = futureTunnels.mapNotNull {
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try {
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it.await()
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} catch (e: Throwable) {
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throwables.add(e)
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null
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}
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}
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withContext(Dispatchers.Main.immediate) { onTunnelImportFinished(tunnels, throwables, messageCallback) }
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} catch (e: Throwable) {
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withContext(Dispatchers.Main.immediate) { onTunnelImportFinished(emptyList(), listOf(e), messageCallback) }
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}
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}
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fun importTunnel(parentFragmentManager: FragmentManager, configText: String, messageCallback: (CharSequence) -> Unit) {
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try {
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// Ensure the config text is parseable before proceeding…
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Config.parse(ByteArrayInputStream(configText.toByteArray(StandardCharsets.UTF_8)))
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// Config text is valid, now create the tunnel…
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ConfigNamingDialogFragment.newInstance(configText).show(parentFragmentManager, null)
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} catch (e: Throwable) {
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onTunnelImportFinished(emptyList(), listOf<Throwable>(e), messageCallback)
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}
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}
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private fun onTunnelImportFinished(tunnels: List<ObservableTunnel>, throwables: Collection<Throwable>, messageCallback: (CharSequence) -> Unit) {
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val context = Application.get().applicationContext
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var message = ""
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for (throwable in throwables) {
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val error = ErrorMessages[throwable]
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message = context.getString(R.string.import_error, error)
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Log.e(TAG, message, throwable)
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}
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if (tunnels.size == 1 && throwables.isEmpty())
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message = context.getString(R.string.import_success, tunnels[0].name)
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else if (tunnels.isEmpty() && throwables.size == 1)
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else if (throwables.isEmpty())
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message = context.resources.getQuantityString(
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R.plurals.import_total_success,
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tunnels.size, tunnels.size
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)
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else if (!throwables.isEmpty())
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message = context.resources.getQuantityString(
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R.plurals.import_partial_success,
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tunnels.size + throwables.size,
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tunnels.size, tunnels.size + throwables.size
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)
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messageCallback(message)
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}
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private const val TAG = "WireGuard/TunnelImporter"
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} |