diff options
Diffstat (limited to 'ui')
33 files changed, 3831 insertions, 111 deletions
diff --git a/ui/build.gradle b/ui/build.gradle index 35abacf8..3661d24c 100644 --- a/ui/build.gradle +++ b/ui/build.gradle @@ -42,7 +42,7 @@ android { release { minifyEnabled true shrinkResources true - proguardFiles "proguard-android-optimize.txt", "proguard-rules.pro" + proguardFiles "proguard-android-optimize.txt" packagingOptions { exclude "DebugProbesKt.bin" exclude "kotlin-tooling-metadata.json" diff --git a/ui/proguard-android-optimize.txt b/ui/proguard-android-optimize.txt index e2095ad6..7bbc2b88 100644 --- a/ui/proguard-android-optimize.txt +++ b/ui/proguard-android-optimize.txt @@ -1,7 +1,6 @@ -allowaccessmodification --dontpreverify -dontusemixedcaseclassnames --dontskipnonpubliclibraryclasses +-dontobfuscate -verbose -keepattributes *Annotation* diff --git a/ui/proguard-rules.pro b/ui/proguard-rules.pro deleted file mode 100644 index d7864f48..00000000 --- a/ui/proguard-rules.pro +++ /dev/null @@ -1,14 +0,0 @@ -# Squelch all warnings, they're harmless but ProGuard -# escalates them as errors. --dontwarn sun.misc.Unsafe - -# Fragment 1.2.4 allows Fragment classes to be obfuscated but -# databinding references in XML seem to not be rewritten to -# match, so we preserve the names as 1.2.3 did. --if public class ** extends androidx.fragment.app.Fragment --keep public class <1> { - public <init>(); -} - -# Don't obfuscate --dontobfuscate diff --git a/ui/src/main/AndroidManifest.xml b/ui/src/main/AndroidManifest.xml index a7538a6e..e1807285 100644 --- a/ui/src/main/AndroidManifest.xml +++ b/ui/src/main/AndroidManifest.xml @@ -3,9 +3,12 @@ xmlns:tools="http://schemas.android.com/tools" android:installLocation="internalOnly"> + <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> <uses-permission android:name="android.permission.CAMERA" /> + <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" /> + <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="28" @@ -103,6 +106,7 @@ <intent-filter> <action android:name="android.intent.action.ACTION_SHUTDOWN" /> <action android:name="android.intent.action.BOOT_COMPLETED" /> + <action android:name="android.intent.action.MY_PACKAGE_REPLACED" /> </intent-filter> </receiver> @@ -142,5 +146,10 @@ <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent> + + <intent> + <action android:name="android.intent.action.MAIN" /> + <category android:name="android.intent.category.LEANBACK_LAUNCHER" /> + </intent> </queries> </manifest> diff --git a/ui/src/main/java/com/wireguard/android/Application.kt b/ui/src/main/java/com/wireguard/android/Application.kt index 06903af4..4dcec508 100644 --- a/ui/src/main/java/com/wireguard/android/Application.kt +++ b/ui/src/main/java/com/wireguard/android/Application.kt @@ -22,6 +22,7 @@ import com.wireguard.android.backend.GoBackend import com.wireguard.android.backend.WgQuickBackend import com.wireguard.android.configStore.FileConfigStore import com.wireguard.android.model.TunnelManager +import com.wireguard.android.updater.Updater import com.wireguard.android.util.RootShell import com.wireguard.android.util.ToolsInstaller import com.wireguard.android.util.UserKnobs @@ -115,6 +116,7 @@ class Application : android.app.Application() { Log.e(TAG, Log.getStackTraceString(e)) } } + Updater.monitorForUpdates() if (BuildConfig.DEBUG) { StrictMode.setVmPolicy(VmPolicy.Builder().detectAll().penaltyLog().build()) diff --git a/ui/src/main/java/com/wireguard/android/BootShutdownReceiver.kt b/ui/src/main/java/com/wireguard/android/BootShutdownReceiver.kt index 23775f44..2b9312a0 100644 --- a/ui/src/main/java/com/wireguard/android/BootShutdownReceiver.kt +++ b/ui/src/main/java/com/wireguard/android/BootShutdownReceiver.kt @@ -8,15 +8,27 @@ import android.content.BroadcastReceiver import android.content.Context import android.content.Intent import android.util.Log +import com.wireguard.android.activity.MainActivity import com.wireguard.android.backend.WgQuickBackend +import com.wireguard.android.updater.Updater import com.wireguard.android.util.applicationScope import kotlinx.coroutines.launch class BootShutdownReceiver : BroadcastReceiver() { override fun onReceive(context: Context, intent: Intent) { + val action = intent.action ?: return + + if (Intent.ACTION_MY_PACKAGE_REPLACED == action && Updater.installer() == context.packageName) { + /* TODO: does not work because of restrictions placed on broadcast receivers. */ + val start = Intent(context, MainActivity::class.java) + start.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP) + start.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK) + context.startActivity(start) + return + } + applicationScope.launch { if (Application.getBackend() !is WgQuickBackend) return@launch - val action = intent.action ?: return@launch val tunnelManager = Application.getTunnelManager() if (Intent.ACTION_BOOT_COMPLETED == action) { Log.i(TAG, "Broadcast receiver restoring state (boot)") diff --git a/ui/src/main/java/com/wireguard/android/activity/LogViewerActivity.kt b/ui/src/main/java/com/wireguard/android/activity/LogViewerActivity.kt index 36925bea..9deed440 100644 --- a/ui/src/main/java/com/wireguard/android/activity/LogViewerActivity.kt +++ b/ui/src/main/java/com/wireguard/android/activity/LogViewerActivity.kt @@ -157,8 +157,7 @@ class LogViewerActivity : AppCompatActivity() { builder.append(rawLogLines[i]) builder.append('\n') } - val ret = builder.toString().toByteArray(Charsets.UTF_8) - return ret + return builder.toString().toByteArray(Charsets.UTF_8) } private suspend fun saveLog() { diff --git a/ui/src/main/java/com/wireguard/android/fragment/TunnelDetailFragment.kt b/ui/src/main/java/com/wireguard/android/fragment/TunnelDetailFragment.kt index 8b155e24..53f79c1d 100644 --- a/ui/src/main/java/com/wireguard/android/fragment/TunnelDetailFragment.kt +++ b/ui/src/main/java/com/wireguard/android/fragment/TunnelDetailFragment.kt @@ -5,6 +5,7 @@ package com.wireguard.android.fragment import android.os.Bundle +import android.util.Log; import android.view.LayoutInflater import android.view.Menu import android.view.MenuInflater @@ -21,6 +22,7 @@ import com.wireguard.android.databinding.TunnelDetailFragmentBinding import com.wireguard.android.databinding.TunnelDetailPeerBinding import com.wireguard.android.model.ObservableTunnel import com.wireguard.android.util.QuantityFormatter +import com.wireguard.android.viewmodel.ConfigDetail import kotlinx.coroutines.delay import kotlinx.coroutines.launch @@ -77,7 +79,9 @@ class TunnelDetailFragment : BaseFragment(), MenuProvider { } else { lifecycleScope.launch { try { - binding.config = newTunnel.getConfigAsync() + var config = newTunnel.getConfigDetailAsync() + binding.config = config + Log.i(TAG, "onSelectedTunnelChanged " + config + ", " + config.config) } catch (_: Throwable) { binding.config = null } @@ -112,16 +116,25 @@ class TunnelDetailFragment : BaseFragment(), MenuProvider { val peer: TunnelDetailPeerBinding = DataBindingUtil.getBinding(binding.peersLayout.getChildAt(i)) ?: continue val publicKey = peer.item!!.publicKey - val rx = statistics.peerRx(publicKey) - val tx = statistics.peerTx(publicKey) - if (rx == 0L && tx == 0L) { + val peerStats = statistics.peer(publicKey) + if (peerStats == null || (peerStats.rxBytes == 0L && peerStats.txBytes == 0L)) { peer.transferLabel.visibility = View.GONE peer.transferText.visibility = View.GONE - continue + } else { + peer.transferText.text = getString(R.string.transfer_rx_tx, + QuantityFormatter.formatBytes(peerStats.rxBytes), + QuantityFormatter.formatBytes(peerStats.txBytes)) + peer.transferLabel.visibility = View.VISIBLE + peer.transferText.visibility = View.VISIBLE + } + if (peerStats == null || peerStats.latestHandshakeEpochMillis == 0L) { + peer.latestHandshakeLabel.visibility = View.GONE + peer.latestHandshakeText.visibility = View.GONE + } else { + peer.latestHandshakeText.text = QuantityFormatter.formatEpochAgo(peerStats.latestHandshakeEpochMillis) + peer.latestHandshakeLabel.visibility = View.VISIBLE + peer.latestHandshakeText.visibility = View.VISIBLE } - peer.transferText.text = getString(R.string.transfer_rx_tx, QuantityFormatter.formatBytes(rx), QuantityFormatter.formatBytes(tx)) - peer.transferLabel.visibility = View.VISIBLE - peer.transferText.visibility = View.VISIBLE } } catch (e: Throwable) { for (i in 0 until binding.peersLayout.childCount) { @@ -129,7 +142,13 @@ class TunnelDetailFragment : BaseFragment(), MenuProvider { ?: continue peer.transferLabel.visibility = View.GONE peer.transferText.visibility = View.GONE + peer.latestHandshakeLabel.visibility = View.GONE + peer.latestHandshakeText.visibility = View.GONE } } } + + companion object { + private const val TAG = "WireGuard/TunnelDetailFragment" + } } diff --git a/ui/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.kt b/ui/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.kt index 7a8b822e..9597fef6 100644 --- a/ui/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.kt +++ b/ui/src/main/java/com/wireguard/android/fragment/TunnelEditorFragment.kt @@ -17,13 +17,17 @@ import android.view.View import android.view.ViewGroup import android.view.WindowManager import android.view.inputmethod.InputMethodManager +import android.widget.ArrayAdapter +import android.widget.AutoCompleteTextView import android.widget.EditText +import android.widget.Filter import android.widget.Toast import androidx.core.os.BundleCompat import androidx.core.view.MenuProvider import androidx.lifecycle.Lifecycle import androidx.lifecycle.lifecycleScope import com.google.android.material.snackbar.Snackbar +import com.google.android.material.textfield.TextInputLayout import com.wireguard.android.Application import com.wireguard.android.R import com.wireguard.android.backend.Tunnel @@ -33,6 +37,7 @@ import com.wireguard.android.util.AdminKnobs import com.wireguard.android.util.BiometricAuthenticator import com.wireguard.android.util.ErrorMessages import com.wireguard.android.viewmodel.ConfigProxy +import com.wireguard.android.viewmodel.Constants import com.wireguard.config.Config import kotlinx.coroutines.launch @@ -44,6 +49,21 @@ class TunnelEditorFragment : BaseFragment(), MenuProvider { private var binding: TunnelEditorFragmentBinding? = null private var tunnel: ObservableTunnel? = null + private class MaterialSpinnerAdapter<T>(context: Context, resource: Int, private val objects: List<T>) : ArrayAdapter<T>(context, resource, objects) { + private val _filter: Filter by lazy { + object : Filter() { + override fun performFiltering(constraint: CharSequence?): FilterResults { + return FilterResults() + } + + override fun publishResults(constraint: CharSequence?, results: FilterResults?) { + } + } + } + + override fun getFilter(): Filter = _filter + } + private fun onConfigLoaded(config: Config) { binding?.config = ConfigProxy(config) } @@ -83,6 +103,13 @@ class TunnelEditorFragment : BaseFragment(), MenuProvider { executePendingBindings() privateKeyTextLayout.setEndIconOnClickListener { config?.`interface`?.generateKeyPair() } } + + var httpProxyMenu = binding?.root?.findViewById<TextInputLayout>(R.id.http_proxy_menu) + var httpProxyItems = listOf(Constants.HTTP_PROXY_NONE, Constants.HTTP_PROXY_MANUAL, Constants.HTTP_PROXY_PAC) + var httpProxyAdapter = MaterialSpinnerAdapter(requireContext(), R.layout.http_proxy_menu_item, httpProxyItems) + var httpProxyMenuText = httpProxyMenu?.editText as? AutoCompleteTextView + httpProxyMenuText?.setAdapter(httpProxyAdapter) + return binding?.root } diff --git a/ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.kt b/ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.kt index 0b6493c9..8c5389d9 100644 --- a/ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.kt +++ b/ui/src/main/java/com/wireguard/android/fragment/TunnelListFragment.kt @@ -33,6 +33,7 @@ import com.wireguard.android.databinding.ObservableKeyedRecyclerViewAdapter.RowC import com.wireguard.android.databinding.TunnelListFragmentBinding import com.wireguard.android.databinding.TunnelListItemBinding import com.wireguard.android.model.ObservableTunnel +import com.wireguard.android.updater.SnackbarUpdateShower import com.wireguard.android.util.ErrorMessages import com.wireguard.android.util.QrCodeFromFileScanner import com.wireguard.android.util.TunnelImporter @@ -122,6 +123,8 @@ class TunnelListFragment : BaseFragment() { backPressedCallback = requireActivity().onBackPressedDispatcher.addCallback(this) { actionMode?.finish() } backPressedCallback?.isEnabled = false + SnackbarUpdateShower.attachToActivity(requireActivity(), binding?.mainContainer!!, binding?.createFab) + return binding?.root } diff --git a/ui/src/main/java/com/wireguard/android/model/ObservableTunnel.kt b/ui/src/main/java/com/wireguard/android/model/ObservableTunnel.kt index c3e3405e..490a2216 100644 --- a/ui/src/main/java/com/wireguard/android/model/ObservableTunnel.kt +++ b/ui/src/main/java/com/wireguard/android/model/ObservableTunnel.kt @@ -7,12 +7,20 @@ package com.wireguard.android.model import android.util.Log import androidx.databinding.BaseObservable import androidx.databinding.Bindable +import com.wireguard.android.Application import com.wireguard.android.BR +import com.wireguard.android.backend.Dhcp import com.wireguard.android.backend.Statistics import com.wireguard.android.backend.Tunnel import com.wireguard.android.databinding.Keyed import com.wireguard.android.util.applicationScope +import com.wireguard.android.viewmodel.ConfigDetail +import com.wireguard.android.viewmodel.PeerDetail import com.wireguard.config.Config +import com.wireguard.config.InetEndpoint +import com.wireguard.config.InetNetwork +import com.wireguard.crypto.Key +import java.util.Optional import kotlinx.coroutines.Dispatchers import kotlinx.coroutines.launch import kotlinx.coroutines.withContext @@ -55,7 +63,18 @@ class ObservableTunnel internal constructor( } fun onStateChanged(state: Tunnel.State): Tunnel.State { - if (state != Tunnel.State.UP) onStatisticsChanged(null) + if (state != Tunnel.State.UP) { + onStatisticsChanged(null) + onDhcpChanged(null) + Application.getCoroutineScope().launch { + onPeersReset() + } + } else { + configDetail?.peers?.forEach { + var endpoint: InetEndpoint? = it.peer?.endpoint?.orElse(null) + it.endpoint = Optional.ofNullable(endpoint?.getResolved()?.orElse(null)); + } + } this.state = state notifyPropertyChanged(BR.state) return state @@ -68,6 +87,7 @@ class ObservableTunnel internal constructor( this@ObservableTunnel.state } + private var configDetail: ConfigDetail? = if (config != null) ConfigDetail(config) else null @get:Bindable var config = config @@ -86,7 +106,11 @@ class ObservableTunnel internal constructor( private set suspend fun getConfigAsync(): Config = withContext(Dispatchers.Main.immediate) { - config ?: manager.getTunnelConfig(this@ObservableTunnel) + config ?: manager.getTunnelConfig(this@ObservableTunnel).config!! + } + + suspend fun getConfigDetailAsync(): ConfigDetail = withContext(Dispatchers.Main.immediate) { + configDetail ?: manager.getTunnelConfig(this@ObservableTunnel) } suspend fun setConfigAsync(config: Config): Config = withContext(Dispatchers.Main.immediate) { @@ -98,10 +122,11 @@ class ObservableTunnel internal constructor( } } - fun onConfigChanged(config: Config?): Config? { + fun onConfigChanged(config: Config?): ConfigDetail? { + this.configDetail = ConfigDetail(config) this.config = config notifyPropertyChanged(BR.config) - return config + return configDetail } @@ -137,6 +162,106 @@ class ObservableTunnel internal constructor( } + @get:Bindable + var dhcp: Dhcp? = null + private set + + override fun onDhcpChange(newDhcp: Dhcp) { + onDhcpChanged(newDhcp) + } + + fun onDhcpChanged(dhcp: Dhcp?): Dhcp? { + this.dhcp = dhcp + notifyPropertyChanged(BR.dhcp) + return dhcp + } + + // Remove dynamic peers, and reset static peers + fun onPeersReset() { + Log.i(TAG, "ObservableTunnel onPeersReset") + var toRemove: MutableList<PeerDetail> = ArrayList() + + configDetail?.peers?.forEach { + if (it.peer == null) { + toRemove.add(it) + } else { + it.endpoint = Optional.empty() + } + } + + toRemove.forEach { + Log.i(TAG, "ObservableTunnel remove " + it) + configDetail?.peers?.remove(it) + } + } + + override fun onEndpointChange(publicKey: Key, newEndpoint: InetEndpoint?) { + Application.getCoroutineScope().launch { + onEndpointChanged(publicKey, newEndpoint) + } + } + + private fun onEndpointChanged(publicKey: Key, newEndpoint: InetEndpoint?) { + + Log.i(TAG, "ObservableTunnel onEndpointChange " + newEndpoint) + var peer: PeerDetail? = null + + configDetail?.peers?.forEach { + if (it.publicKey.equals(publicKey) == true) { + Log.i(TAG, "ObservableTunnel peer " + it + ", " + it.peer) + peer = it; + } + } + + if (peer == null) { + Log.i(TAG, "ObservableTunnel create peer " + publicKey) + peer = PeerDetail(publicKey) + configDetail?.peers?.add(peer) + } + + var peer2: PeerDetail = peer!! + + if (newEndpoint != null) { + peer2.endpoint = newEndpoint.getResolved() + } else { + var peer3 = peer2.peer + peer2.endpoint = if (peer3 != null) peer3.endpoint else Optional.empty() + } + } + + fun lookupPeer(publicKey: Key): PeerDetail { + configDetail?.peers?.forEach { + if (it.publicKey.equals(publicKey) == true) { + Log.i(TAG, "ObservableTunnel peer " + it + ", " + it.peer) + return it + } + } + + Log.i(TAG, "ObservableTunnel create peer " + publicKey) + var peer: PeerDetail = PeerDetail(publicKey) + configDetail?.peers?.add(peer) + + return peer + } + + override fun onAllowedIpsChange(publicKey: Key, addNetworks: List<InetNetwork>?, removeNetworks: List<InetNetwork>?) { + Application.getCoroutineScope().launch { + onAllowedIpsChanged(publicKey, addNetworks, removeNetworks) + } + } + + private fun onAllowedIpsChanged(publicKey: Key, addNetworks: List<InetNetwork>?, removeNetworks: List<InetNetwork>?) { + var peer: PeerDetail = lookupPeer(publicKey) + + removeNetworks?.let() { + peer.allowedIps.removeAll(removeNetworks) + } + addNetworks?.let() { + peer.allowedIps.addAll(addNetworks) + } + } + + suspend fun deleteAsync() = manager.delete(this) diff --git a/ui/src/main/java/com/wireguard/android/model/TunnelManager.kt b/ui/src/main/java/com/wireguard/android/model/TunnelManager.kt index e7bb751b..77d69f70 100644 --- a/ui/src/main/java/com/wireguard/android/model/TunnelManager.kt +++ b/ui/src/main/java/com/wireguard/android/model/TunnelManager.kt @@ -24,6 +24,7 @@ import com.wireguard.android.databinding.ObservableSortedKeyedArrayList import com.wireguard.android.util.ErrorMessages import com.wireguard.android.util.UserKnobs import com.wireguard.android.util.applicationScope +import com.wireguard.android.viewmodel.ConfigDetail import com.wireguard.config.Config import kotlinx.coroutines.CompletableDeferred import kotlinx.coroutines.Dispatchers @@ -94,7 +95,7 @@ class TunnelManager(private val configStore: ConfigStore) : BaseObservable() { applicationScope.launch { UserKnobs.setLastUsedTunnel(value?.name) } } - suspend fun getTunnelConfig(tunnel: ObservableTunnel): Config = withContext(Dispatchers.Main.immediate) { + suspend fun getTunnelConfig(tunnel: ObservableTunnel): ConfigDetail = withContext(Dispatchers.Main.immediate) { tunnel.onConfigChanged(withContext(Dispatchers.IO) { configStore.load(tunnel.name) })!! } @@ -155,7 +156,7 @@ class TunnelManager(private val configStore: ConfigStore) : BaseObservable() { tunnel.onConfigChanged(withContext(Dispatchers.IO) { getBackend().setState(tunnel, tunnel.state, config) configStore.save(tunnel.name, config) - })!! + })!!.config!! } suspend fun setTunnelName(tunnel: ObservableTunnel, name: String): String = withContext(Dispatchers.Main.immediate) { diff --git a/ui/src/main/java/com/wireguard/android/preference/DonatePreference.kt b/ui/src/main/java/com/wireguard/android/preference/DonatePreference.kt index bb49c7e1..bf0624bc 100644 --- a/ui/src/main/java/com/wireguard/android/preference/DonatePreference.kt +++ b/ui/src/main/java/com/wireguard/android/preference/DonatePreference.kt @@ -14,6 +14,7 @@ import android.widget.Toast import androidx.preference.Preference import com.google.android.material.dialog.MaterialAlertDialogBuilder import com.wireguard.android.R +import com.wireguard.android.updater.Updater import com.wireguard.android.util.ErrorMessages class DonatePreference(context: Context, attrs: AttributeSet?) : Preference(context, attrs) { @@ -22,21 +23,8 @@ class DonatePreference(context: Context, attrs: AttributeSet?) : Preference(cont override fun getTitle() = context.getString(R.string.donate_title) override fun onClick() { - val installer = try { - val packageName = context.packageName - val pm = context.packageManager - if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) { - pm.getInstallSourceInfo(packageName).installingPackageName ?: "" - } else { - @Suppress("DEPRECATION") - pm.getInstallerPackageName(packageName) ?: "" - } - } catch (_: Throwable) { - "" - } - /* Google Play Store forbids links to our donation page. */ - if (installer == "com.android.vending") { + if (Updater.installerIsGooglePlay()) { MaterialAlertDialogBuilder(context) .setTitle(R.string.donate_title) .setMessage(R.string.donate_google_play_disappointment) diff --git a/ui/src/main/java/com/wireguard/android/updater/Ed25519.java b/ui/src/main/java/com/wireguard/android/updater/Ed25519.java new file mode 100644 index 00000000..d27caf1c --- /dev/null +++ b/ui/src/main/java/com/wireguard/android/updater/Ed25519.java @@ -0,0 +1,2507 @@ +/* + * Copyright © 2017-2023 WireGuard LLC. All Rights Reserved. + * Copyright 2017 Google Inc. + * SPDX-License-Identifier: Apache-2.0 + */ + +package com.wireguard.android.updater; + +import java.math.BigInteger; +import java.security.GeneralSecurityException; +import java.security.MessageDigest; +import java.util.Arrays; + +/** + * Implementation of Ed25519 signature verification. + * + * <p>This implementation is based on the ed25519/ref10 implementation in NaCl.</p> + * + * <p>It implements this twisted Edwards curve: + * + * <pre> + * -x^2 + y^2 = 1 + (-121665 / 121666 mod 2^255-19)*x^2*y^2 + * </pre> + * + * @see <a href="https://eprint.iacr.org/2008/013.pdf">Bernstein D.J., Birkner P., Joye M., Lange + * T., Peters C. (2008) Twisted Edwards Curves</a> + * @see <a href="https://eprint.iacr.org/2008/522.pdf">Hisil H., Wong K.KH., Carter G., Dawson E. + * (2008) Twisted Edwards Curves Revisited</a> + */ +final class Ed25519 { + + // d = -121665 / 121666 mod 2^255-19 + private static final long[] D; + // 2d + private static final long[] D2; + // 2^((p-1)/4) mod p where p = 2^255-19 + private static final long[] SQRTM1; + + /** + * Base point for the Edwards twisted curve = (x, 4/5) and its exponentiations. B_TABLE[i][j] = + * (j+1)*256^i*B for i in [0, 32) and j in [0, 8). Base point B = B_TABLE[0][0] + */ + private static final CachedXYT[][] B_TABLE; + private static final CachedXYT[] B2; + + private static final BigInteger P_BI = + BigInteger.valueOf(2).pow(255).subtract(BigInteger.valueOf(19)); + private static final BigInteger D_BI = + BigInteger.valueOf(-121665).multiply(BigInteger.valueOf(121666).modInverse(P_BI)).mod(P_BI); + private static final BigInteger D2_BI = BigInteger.valueOf(2).multiply(D_BI).mod(P_BI); + private static final BigInteger SQRTM1_BI = + BigInteger.valueOf(2).modPow(P_BI.subtract(BigInteger.ONE).divide(BigInteger.valueOf(4)), P_BI); + + private Ed25519() { + } + + private static class Point { + private BigInteger x; + private BigInteger y; + } + + private static BigInteger recoverX(BigInteger y) { + // x^2 = (y^2 - 1) / (d * y^2 + 1) mod 2^255-19 + BigInteger xx = + y.pow(2) + .subtract(BigInteger.ONE) + .multiply(D_BI.multiply(y.pow(2)).add(BigInteger.ONE).modInverse(P_BI)); + BigInteger x = xx.modPow(P_BI.add(BigInteger.valueOf(3)).divide(BigInteger.valueOf(8)), P_BI); + if (!x.pow(2).subtract(xx).mod(P_BI).equals(BigInteger.ZERO)) { + x = x.multiply(SQRTM1_BI).mod(P_BI); + } + if (x.testBit(0)) { + x = P_BI.subtract(x); + } + return x; + } + + private static Point edwards(Point a, Point b) { + Point o = new Point(); + BigInteger xxyy = D_BI.multiply(a.x.multiply(b.x).multiply(a.y).multiply(b.y)).mod(P_BI); + o.x = + (a.x.multiply(b.y).add(b.x.multiply(a.y))) + .multiply(BigInteger.ONE.add(xxyy).modInverse(P_BI)) + .mod(P_BI); + o.y = + (a.y.multiply(b.y).add(a.x.multiply(b.x))) + .multiply(BigInteger.ONE.subtract(xxyy).modInverse(P_BI)) + .mod(P_BI); + return o; + } + + private static byte[] toLittleEndian(BigInteger n) { + byte[] b = new byte[32]; + byte[] nBytes = n.toByteArray(); + System.arraycopy(nBytes, 0, b, 32 - nBytes.length, nBytes.length); + for (int i = 0; i < b.length / 2; i++) { + byte t = b[i]; + b[i] = b[b.length - i - 1]; + b[b.length - i - 1] = t; + } + return b; + } + + private static CachedXYT getCachedXYT(Point p) { + return new CachedXYT( + Field25519.expand(toLittleEndian(p.y.add(p.x).mod(P_BI))), + Field25519.expand(toLittleEndian(p.y.subtract(p.x).mod(P_BI))), + Field25519.expand(toLittleEndian(D2_BI.multiply(p.x).multiply(p.y).mod(P_BI)))); + } + + static { + Point b = new Point(); + b.y = BigInteger.valueOf(4).multiply(BigInteger.valueOf(5).modInverse(P_BI)).mod(P_BI); + b.x = recoverX(b.y); + + D = Field25519.expand(toLittleEndian(D_BI)); + D2 = Field25519.expand(toLittleEndian(D2_BI)); + SQRTM1 = Field25519.expand(toLittleEndian(SQRTM1_BI)); + + Point bi = b; + B_TABLE = new CachedXYT[32][8]; + for (int i = 0; i < 32; i++) { + Point bij = bi; + for (int j = 0; j < 8; j++) { + B_TABLE[i][j] = getCachedXYT(bij); + bij = edwards(bij, bi); + } + for (int j = 0; j < 8; j++) { + bi = edwards(bi, bi); + } + } + bi = b; + Point b2 = edwards(b, b); + B2 = new CachedXYT[8]; + for (int i = 0; i < 8; i++) { + B2[i] = getCachedXYT(bi); + bi = edwards(bi, b2); + } + } + + private static final int PUBLIC_KEY_LEN = Field25519.FIELD_LEN; + private static final int SIGNATURE_LEN = Field25519.FIELD_LEN * 2; + + /** + * Defines field 25519 function based on <a + * href="https://github.com/agl/curve25519-donna/blob/master/curve25519-donna.c">curve25519-donna C + * implementation</a> (mostly identical). + * + * <p>Field elements are written as an array of signed, 64-bit limbs (an array of longs), least + * significant first. The value of the field element is: + * + * <pre> + * x[0] + 2^26·x[1] + 2^51·x[2] + 2^77·x[3] + 2^102·x[4] + 2^128·x[5] + 2^153·x[6] + 2^179·x[7] + + * 2^204·x[8] + 2^230·x[9], + * </pre> + * + * <p>i.e. the limbs are 26, 25, 26, 25, ... bits wide. + */ + private static final class Field25519 { + /** + * During Field25519 computation, the mixed radix representation may be in different forms: + * <ul> + * <li> Reduced-size form: the array has size at most 10. + * <li> Non-reduced-size form: the array is not reduced modulo 2^255 - 19 and has size at most + * 19. + * </ul> + * <p> + * TODO(quannguyen): + * <ul> + * <li> Clarify ill-defined terminologies. + * <li> The reduction procedure is different from DJB's paper + * (http://cr.yp.to/ecdh/curve25519-20060209.pdf). The coefficients after reducing degree and + * reducing coefficients aren't guaranteed to be in range {-2^25, ..., 2^25}. We should check to + * see what's going on. + * <li> Consider using method mult() everywhere and making product() private. + * </ul> + */ + + static final int FIELD_LEN = 32; + static final int LIMB_CNT = 10; + private static final long TWO_TO_25 = 1 << 25; + private static final long TWO_TO_26 = TWO_TO_25 << 1; + + private static final int[] EXPAND_START = {0, 3, 6, 9, 12, 16, 19, 22, 25, 28}; + private static final int[] EXPAND_SHIFT = {0, 2, 3, 5, 6, 0, 1, 3, 4, 6}; + private static final int[] MASK = {0x3ffffff, 0x1ffffff}; + private static final int[] SHIFT = {26, 25}; + + /** + * Sums two numbers: output = in1 + in2 + * <p> + * On entry: in1, in2 are in reduced-size form. + */ + static void sum(long[] output, long[] in1, long[] in2) { + for (int i = 0; i < LIMB_CNT; i++) { + output[i] = in1[i] + in2[i]; + } + } + + /** + * Sums two numbers: output += in + * <p> + * On entry: in is in reduced-size form. + */ + static void sum(long[] output, long[] in) { + sum(output, output, in); + } + + /** + * Find the difference of two numbers: output = in1 - in2 + * (note the order of the arguments!). + * <p> + * On entry: in1, in2 are in reduced-size form. + */ + static void sub(long[] output, long[] in1, long[] in2) { + for (int i = 0; i < LIMB_CNT; i++) { + output[i] = in1[i] - in2[i]; + } + } + + /** + * Find the difference of two numbers: output = in - output + * (note the order of the arguments!). + * <p> + * On entry: in, output are in reduced-size form. + */ + static void sub(long[] output, long[] in) { + sub(output, in, output); + } + + /** + * Multiply a number by a scalar: output = in * scalar + */ + static void scalarProduct(long[] output, long[] in, long scalar) { + for (int i = 0; i < LIMB_CNT; i++) { + output[i] = in[i] * scalar; + } + } + + /** + * Multiply two numbers: out = in2 * in + * <p> + * output must be distinct to both inputs. The inputs are reduced coefficient form, + * the output is not. + * <p> + * out[x] <= 14 * the largest product of the input limbs. + */ + static void product(long[] out, long[] in2, long[] in) { + out[0] = in2[0] * in[0]; + out[1] = in2[0] * in[1] + + in2[1] * in[0]; + out[2] = 2 * in2[1] * in[1] + + in2[0] * in[2] + + in2[2] * in[0]; + out[3] = in2[1] * in[2] + + in2[2] * in[1] + + in2[0] * in[3] + + in2[3] * in[0]; + out[4] = in2[2] * in[2] + + 2 * (in2[1] * in[3] + in2[3] * in[1]) + + in2[0] * in[4] + + in2[4] * in[0]; + out[5] = in2[2] * in[3] + + in2[3] * in[2] + + in2[1] * in[4] + + in2[4] * in[1] + + in2[0] * in[5] + + in2[5] * in[0]; + out[6] = 2 * (in2[3] * in[3] + in2[1] * in[5] + in2[5] * in[1]) + + in2[2] * in[4] + + in2[4] * in[2] + + in2[0] * in[6] + + in2[6] * in[0]; + out[7] = in2[3] * in[4] + + in2[4] * in[3] + + in2[2] * in[5] + + in2[5] * in[2] + + in2[1] * in[6] + + in2[6] * in[1] + + in2[0] * in[7] + + in2[7] * in[0]; + out[8] = in2[4] * in[4] + + 2 * (in2[3] * in[5] + in2[5] * in[3] + in2[1] * in[7] + in2[7] * in[1]) + + in2[2] * in[6] + + in2[6] * in[2] + + in2[0] * in[8] + + in2[8] * in[0]; + out[9] = in2[4] * in[5] + + in2[5] * in[4] + + in2[3] * in[6] + + in2[6] * in[3] + + in2[2] * in[7] + + in2[7] * in[2] + + in2[1] * in[8] + + in2[8] * in[1] + + in2[0] * in[9] + + in2[9] * in[0]; + out[10] = + 2 * (in2[5] * in[5] + in2[3] * in[7] + in2[7] * in[3] + in2[1] * in[9] + in2[9] * in[1]) + + in2[4] * in[6] + + in2[6] * in[4] + + in2[2] * in[8] + + in2[8] * in[2]; + out[11] = in2[5] * in[6] + + in2[6] * in[5] + + in2[4] * in[7] + + in2[7] * in[4] + + in2[3] * in[8] + + in2[8] * in[3] + + in2[2] * in[9] + + in2[9] * in[2]; + out[12] = in2[6] * in[6] + + 2 * (in2[5] * in[7] + in2[7] * in[5] + in2[3] * in[9] + in2[9] * in[3]) + + in2[4] * in[8] + + in2[8] * in[4]; + out[13] = in2[6] * in[7] + + in2[7] * in[6] + + in2[5] * in[8] + + in2[8] * in[5] + + in2[4] * in[9] + + in2[9] * in[4]; + out[14] = 2 * (in2[7] * in[7] + in2[5] * in[9] + in2[9] * in[5]) + + in2[6] * in[8] + + in2[8] * in[6]; + out[15] = in2[7] * in[8] + + in2[8] * in[7] + + in2[6] * in[9] + + in2[9] * in[6]; + out[16] = in2[8] * in[8] + + 2 * (in2[7] * in[9] + in2[9] * in[7]); + out[17] = in2[8] * in[9] + + in2[9] * in[8]; + out[18] = 2 * in2[9] * in[9]; + } + + /** + * Reduce a field element by calling reduceSizeByModularReduction and reduceCoefficients. + * + * @param input An input array of any length. If the array has 19 elements, it will be used as + * temporary buffer and its contents changed. + * @param output An output array of size LIMB_CNT. After the call |output[i]| < 2^26 will hold. + */ + static void reduce(long[] input, long[] output) { + long[] tmp; + if (input.length == 19) { + tmp = input; + } else { + tmp = new long[19]; + System.arraycopy(input, 0, tmp, 0, input.length); + } + reduceSizeByModularReduction(tmp); + reduceCoefficients(tmp); + System.arraycopy(tmp, 0, output, 0, LIMB_CNT); + } + + /** + * Reduce a long form to a reduced-size form by taking the input mod 2^255 - 19. + * <p> + * On entry: |output[i]| < 14*2^54 + * On exit: |output[0..8]| < 280*2^54 + */ + static void reduceSizeByModularReduction(long[] output) { + // The coefficients x[10], x[11],..., x[18] are eliminated by reduction modulo 2^255 - 19. + // For example, the coefficient x[18] is multiplied by 19 and added to the coefficient x[8]. + // + // Each of these shifts and adds ends up multiplying the value by 19. + // + // For output[0..8], the absolute entry value is < 14*2^54 and we add, at most, 19*14*2^54 thus, + // on exit, |output[0..8]| < 280*2^54. + output[8] += output[18] << 4; + output[8] += output[18] << 1; + output[8] += output[18]; + output[7] += output[17] << 4; + output[7] += output[17] << 1; + output[7] += output[17]; + output[6] += output[16] << 4; + output[6] += output[16] << 1; + output[6] += output[16]; + output[5] += output[15] << 4; + output[5] += output[15] << 1; + output[5] += output[15]; + output[4] += output[14] << 4; + output[4] += output[14] << 1; + output[4] += output[14]; + output[3] += output[13] << 4; + output[3] += output[13] << 1; + output[3] += output[13]; + output[2] += output[12] << 4; + output[2] += output[12] << 1; + output[2] += output[12]; + output[1] += output[11] << 4; + output[1] += output[11] << 1; + output[1] += output[11]; + output[0] += output[10] << 4; + output[0] += output[10] << 1; + output[0] += output[10]; + } + + /** + * Reduce all coefficients of the short form input so that |x| < 2^26. + * <p> + * On entry: |output[i]| < 280*2^54 + */ + static void reduceCoefficients(long[] output) { + output[10] = 0; + + for (int i = 0; i < LIMB_CNT; i += 2) { + long over = output[i] / TWO_TO_26; + // The entry condition (that |output[i]| < 280*2^54) means that over is, at most, 280*2^28 in + // the first iteration of this loop. This is added to the next limb and we can approximate the + // resulting bound of that limb by 281*2^54. + output[i] -= over << 26; + output[i + 1] += over; + + // For the first iteration, |output[i+1]| < 281*2^54, thus |over| < 281*2^29. When this is + // added to the next limb, the resulting bound can be approximated as 281*2^54. + // + // For subsequent iterations of the loop, 281*2^54 remains a conservative bound and no + // overflow occurs. + over = output[i + 1] / TWO_TO_25; + output[i + 1] -= over << 25; + output[i + 2] += over; + } + // Now |output[10]| < 281*2^29 and all other coefficients are reduced. + output[0] += output[10] << 4; + output[0] += output[10] << 1; + output[0] += output[10]; + + output[10] = 0; + // Now output[1..9] are reduced, and |output[0]| < 2^26 + 19*281*2^29 so |over| will be no more + // than 2^16. + long over = output[0] / TWO_TO_26; + output[0] -= over << 26; + output[1] += over; + // Now output[0,2..9] are reduced, and |output[1]| < 2^25 + 2^16 < 2^26. The bound on + // |output[1]| is sufficient to meet our needs. + } + + /** + * A helpful wrapper around {@ref Field25519#product}: output = in * in2. + * <p> + * On entry: |in[i]| < 2^27 and |in2[i]| < 2^27. + * <p> + * The output is reduced degree (indeed, one need only provide storage for 10 limbs) and + * |output[i]| < 2^26. + */ + static void mult(long[] output, long[] in, long[] in2) { + long[] t = new long[19]; + product(t, in, in2); + // |t[i]| < 2^26 + reduce(t, output); + } + + /** + * Square a number: out = in**2 + * <p> + * output must be distinct from the input. The inputs are reduced coefficient form, the output is + * not. + * <p> + * out[x] <= 14 * the largest product of the input limbs. + */ + private static void squareInner(long[] out, long[] in) { + out[0] = in[0] * in[0]; + out[1] = 2 * in[0] * in[1]; + out[2] = 2 * (in[1] * in[1] + in[0] * in[2]); + out[3] = 2 * (in[1] * in[2] + in[0] * in[3]); + out[4] = in[2] * in[2] + + 4 * in[1] * in[3] + + 2 * in[0] * in[4]; + out[5] = 2 * (in[2] * in[3] + in[1] * in[4] + in[0] * in[5]); + out[6] = 2 * (in[3] * in[3] + in[2] * in[4] + in[0] * in[6] + 2 * in[1] * in[5]); + out[7] = 2 * (in[3] * in[4] + in[2] * in[5] + in[1] * in[6] + in[0] * in[7]); + out[8] = in[4] * in[4] + + 2 * (in[2] * in[6] + in[0] * in[8] + 2 * (in[1] * in[7] + in[3] * in[5])); + out[9] = 2 * (in[4] * in[5] + in[3] * in[6] + in[2] * in[7] + in[1] * in[8] + in[0] * in[9]); + out[10] = 2 * (in[5] * in[5] + + in[4] * in[6] + + in[2] * in[8] + + 2 * (in[3] * in[7] + in[1] * in[9])); + out[11] = 2 * (in[5] * in[6] + in[4] * in[7] + in[3] * in[8] + in[2] * in[9]); + out[12] = in[6] * in[6] + + 2 * (in[4] * in[8] + 2 * (in[5] * in[7] + in[3] * in[9])); + out[13] = 2 * (in[6] * in[7] + in[5] * in[8] + in[4] * in[9]); + out[14] = 2 * (in[7] * in[7] + in[6] * in[8] + 2 * in[5] * in[9]); + out[15] = 2 * (in[7] * in[8] + in[6] * in[9]); + out[16] = in[8] * in[8] + 4 * in[7] * in[9]; + out[17] = 2 * in[8] * in[9]; + out[18] = 2 * in[9] * in[9]; + } + + /** + * Returns in^2. + * <p> + * On entry: The |in| argument is in reduced coefficients form and |in[i]| < 2^27. + * <p> + * On exit: The |output| argument is in reduced coefficients form (indeed, one need only provide + * storage for 10 limbs) and |out[i]| < 2^26. + */ + static void square(long[] output, long[] in) { + long[] t = new long[19]; + squareInner(t, in); + // |t[i]| < 14*2^54 because the largest product of two limbs will be < 2^(27+27) and SquareInner + // adds together, at most, 14 of those products. + reduce(t, output); + } + + /** + * Takes a little-endian, 32-byte number and expands it into mixed radix form. + */ + static long[] expand(byte[] input) { + long[] output = new long[LIMB_CNT]; + for (int i = 0; i < LIMB_CNT; i++) { + output[i] = ((((long) (input[EXPAND_START[i]] & 0xff)) + | ((long) (input[EXPAND_START[i] + 1] & 0xff)) << 8 + | ((long) (input[EXPAND_START[i] + 2] & 0xff)) << 16 + | ((long) (input[EXPAND_START[i] + 3] & 0xff)) << 24) >> EXPAND_SHIFT[i]) & MASK[i & 1]; + } + return output; + } + + /** + * Takes a fully reduced mixed radix form number and contract it into a little-endian, 32-byte + * array. + * <p> + * On entry: |input_limbs[i]| < 2^26 + */ + @SuppressWarnings("NarrowingCompoundAssignment") + static byte[] contract(long[] inputLimbs) { + long[] input = Arrays.copyOf(inputLimbs, LIMB_CNT); + for (int j = 0; j < 2; j++) { + for (int i = 0; i < 9; i++) { + // This calculation is a time-invariant way to make input[i] non-negative by borrowing + // from the next-larger limb. + int carry = -(int) ((input[i] & (input[i] >> 31)) >> SHIFT[i & 1]); + input[i] = input[i] + (carry << SHIFT[i & 1]); + input[i + 1] -= carry; + } + + // There's no greater limb for input[9] to borrow from, but we can multiply by 19 and borrow + // from input[0], which is valid mod 2^255-19. + { + int carry = -(int) ((input[9] & (input[9] >> 31)) >> 25); + input[9] += (carry << 25); + input[0] -= (carry * 19); + } + + // After the first iteration, input[1..9] are non-negative and fit within 25 or 26 bits, + // depending on position. However, input[0] may be negative. + } + + // The first borrow-propagation pass above ended with every limb except (possibly) input[0] + // non-negative. + // + // If input[0] was negative after the first pass, then it was because of a carry from input[9]. + // On entry, input[9] < 2^26 so the carry was, at most, one, since (2**26-1) >> 25 = 1. Thus + // input[0] >= -19. + // + // In the second pass, each limb is decreased by at most one. Thus the second borrow-propagation + // pass could only have wrapped around to decrease input[0] again if the first pass left + // input[0] negative *and* input[1] through input[9] were all zero. In that case, input[1] is + // now 2^25 - 1, and this last borrow-propagation step will leave input[1] non-negative. + { + int carry = -(int) ((input[0] & (input[0] >> 31)) >> 26); + input[0] += (carry << 26); + input[1] -= carry; + } + + // All input[i] are now non-negative. However, there might be values between 2^25 and 2^26 in a + // limb which is, nominally, 25 bits wide. + for (int j = 0; j < 2; j++) { + for (int i = 0; i < 9; i++) { + int carry = (int) (input[i] >> SHIFT[i & 1]); + input[i] &= MASK[i & 1]; + input[i + 1] += carry; + } + } + + { + int carry = (int) (input[9] >> 25); + input[9] &= 0x1ffffff; + input[0] += 19 * carry; + } + + // If the first carry-chain pass, just above, ended up with a carry from input[9], and that + // caused input[0] to be out-of-bounds, then input[0] was < 2^26 + 2*19, because the carry was, + // at most, two. + // + // If the second pass carried from input[9] again then input[0] is < 2*19 and the input[9] -> + // input[0] carry didn't push input[0] out of bounds. + + // It still remains the case that input might be between 2^255-19 and 2^255. In this case, + // input[1..9] must take their maximum value and input[0] must be >= (2^255-19) & 0x3ffffff, + // which is 0x3ffffed. + int mask = gte((int) input[0], 0x3ffffed); + for (int i = 1; i < LIMB_CNT; i++) { + mask &= eq((int) input[i], MASK[i & 1]); + } + + // mask is either 0xffffffff (if input >= 2^255-19) and zero otherwise. Thus this conditionally + // subtracts 2^255-19. + input[0] -= mask & 0x3ffffed; + input[1] -= mask & 0x1ffffff; + for (int i = 2; i < LIMB_CNT; i += 2) { + input[i] -= mask & 0x3ffffff; + input[i + 1] -= mask & 0x1ffffff; + } + + for (int i = 0; i < LIMB_CNT; i++) { + input[i] <<= EXPAND_SHIFT[i]; + } + byte[] output = new byte[FIELD_LEN]; + for (int i = 0; i < LIMB_CNT; i++) { + output[EXPAND_START[i]] |= input[i] & 0xff; + output[EXPAND_START[i] + 1] |= (input[i] >> 8) & 0xff; + output[EXPAND_START[i] + 2] |= (input[i] >> 16) & 0xff; + output[EXPAND_START[i] + 3] |= (input[i] >> 24) & 0xff; + } + return output; + } + + /** + * Computes inverse of z = z(2^255 - 21) + * <p> + * Shamelessly copied from agl's code which was shamelessly copied from djb's code. Only the + * comment format and the variable namings are different from those. + */ + static void inverse(long[] out, long[] z) { + long[] z2 = new long[Field25519.LIMB_CNT]; + long[] z9 = new long[Field25519.LIMB_CNT]; + long[] z11 = new long[Field25519.LIMB_CNT]; + long[] z2To5Minus1 = new long[Field25519.LIMB_CNT]; + long[] z2To10Minus1 = new long[Field25519.LIMB_CNT]; + long[] z2To20Minus1 = new long[Field25519.LIMB_CNT]; + long[] z2To50Minus1 = new long[Field25519.LIMB_CNT]; + long[] z2To100Minus1 = new long[Field25519.LIMB_CNT]; + long[] t0 = new long[Field25519.LIMB_CNT]; + long[] t1 = new long[Field25519.LIMB_CNT]; + + square(z2, z); // 2 + square(t1, z2); // 4 + square(t0, t1); // 8 + mult(z9, t0, z); // 9 + mult(z11, z9, z2); // 11 + square(t0, z11); // 22 + mult(z2To5Minus1, t0, z9); // 2^5 - 2^0 = 31 + + square(t0, z2To5Minus1); // 2^6 - 2^1 + square(t1, t0); // 2^7 - 2^2 + square(t0, t1); // 2^8 - 2^3 + square(t1, t0); // 2^9 - 2^4 + square(t0, t1); // 2^10 - 2^5 + mult(z2To10Minus1, t0, z2To5Minus1); // 2^10 - 2^0 + + square(t0, z2To10Minus1); // 2^11 - 2^1 + square(t1, t0); // 2^12 - 2^2 + for (int i = 2; i < 10; i += 2) { // 2^20 - 2^10 + square(t0, t1); + square(t1, t0); + } + mult(z2To20Minus1, t1, z2To10Minus1); // 2^20 - 2^0 + + square(t0, z2To20Minus1); // 2^21 - 2^1 + square(t1, t0); // 2^22 - 2^2 + for (int i = 2; i < 20; i += 2) { // 2^40 - 2^20 + square(t0, t1); + square(t1, t0); + } + mult(t0, t1, z2To20Minus1); // 2^40 - 2^0 + + square(t1, t0); // 2^41 - 2^1 + square(t0, t1); // 2^42 - 2^2 + for (int i = 2; i < 10; i += 2) { // 2^50 - 2^10 + square(t1, t0); + square(t0, t1); + } + mult(z2To50Minus1, t0, z2To10Minus1); // 2^50 - 2^0 + + square(t0, z2To50Minus1); // 2^51 - 2^1 + square(t1, t0); // 2^52 - 2^2 + for (int i = 2; i < 50; i += 2) { // 2^100 - 2^50 + square(t0, t1); + square(t1, t0); + } + mult(z2To100Minus1, t1, z2To50Minus1); // 2^100 - 2^0 + + square(t1, z2To100Minus1); // 2^101 - 2^1 + square(t0, t1); // 2^102 - 2^2 + for (int i = 2; i < 100; i += 2) { // 2^200 - 2^100 + square(t1, t0); + square(t0, t1); + } + mult(t1, t0, z2To100Minus1); // 2^200 - 2^0 + + square(t0, t1); // 2^201 - 2^1 + square(t1, t0); // 2^202 - 2^2 + for (int i = 2; i < 50; i += 2) { // 2^250 - 2^50 + square(t0, t1); + square(t1, t0); + } + mult(t0, t1, z2To50Minus1); // 2^250 - 2^0 + + square(t1, t0); // 2^251 - 2^1 + square(t0, t1); // 2^252 - 2^2 + square(t1, t0); // 2^253 - 2^3 + square(t0, t1); // 2^254 - 2^4 + square(t1, t0); // 2^255 - 2^5 + mult(out, t1, z11); // 2^255 - 21 + } + + + /** + * Returns 0xffffffff iff a == b and zero otherwise. + */ + private static int eq(int a, int b) { + a = ~(a ^ b); + a &= a << 16; + a &= a << 8; + a &= a << 4; + a &= a << 2; + a &= a << 1; + return a >> 31; + } + + /** + * returns 0xffffffff if a >= b and zero otherwise, where a and b are both non-negative. + */ + private static int gte(int a, int b) { + a -= b; + // a >= 0 iff a >= b. + return ~(a >> 31); + } + } + + // (x = 0, y = 1) point + private static final CachedXYT CACHED_NEUTRAL = new CachedXYT( + new long[]{1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + new long[]{1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + new long[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 0}); + private static final PartialXYZT NEUTRAL = new PartialXYZT( + new XYZ(new long[]{0, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + new long[]{1, 0, 0, 0, 0, 0, 0, 0, 0, 0}, + new long[]{1, 0, 0, 0, 0, 0, 0, 0, 0, 0}), + new long[]{1, 0, 0, 0, 0, 0, 0, 0, 0, 0}); + + /** + * Projective point representation (X:Y:Z) satisfying x = X/Z, y = Y/Z + * <p> + * Note that this is referred as ge_p2 in ref10 impl. + * Also note that x = X, y = Y and z = Z below following Java coding style. + * <p> + * See + * Koyama K., Tsuruoka Y. (1993) Speeding up Elliptic Cryptosystems by Using a Signed Binary + * Window Method. + * <p> + * https://hyperelliptic.org/EFD/g1p/auto-twisted-projective.html + */ + private static class XYZ { + + final long[] x; + final long[] y; + final long[] z; + + XYZ() { + this(new long[Field25519.LIMB_CNT], new long[Field25519.LIMB_CNT], new long[Field25519.LIMB_CNT]); + } + + XYZ(long[] x, long[] y, long[] z) { + this.x = x; + this.y = y; + this.z = z; + } + + XYZ(XYZ xyz) { + x = Arrays.copyOf(xyz.x, Field25519.LIMB_CNT); + y = Arrays.copyOf(xyz.y, Field25519.LIMB_CNT); + z = Arrays.copyOf(xyz.z, Field25519.LIMB_CNT); + } + + XYZ(PartialXYZT partialXYZT) { + this(); + fromPartialXYZT(this, partialXYZT); + } + + /** + * ge_p1p1_to_p2.c + */ + static XYZ fromPartialXYZT(XYZ out, PartialXYZT in) { + Field25519.mult(out.x, in.xyz.x, in.t); + Field25519.mult(out.y, in.xyz.y, in.xyz.z); + Field25519.mult(out.z, in.xyz.z, in.t); + return out; + } + + /** + * Encodes this point to bytes. + */ + byte[] toBytes() { + long[] recip = new long[Field25519.LIMB_CNT]; + long[] x = new long[Field25519.LIMB_CNT]; + long[] y = new long[Field25519.LIMB_CNT]; + Field25519.inverse(recip, z); + Field25519.mult(x, this.x, recip); + Field25519.mult(y, this.y, recip); + byte[] s = Field25519.contract(y); + s[31] = (byte) (s[31] ^ (getLsb(x) << 7)); + return s; + } + + + /** + * Best effort fix-timing array comparison. + * + * @return true if two arrays are equal. + */ + private static boolean bytesEqual(final byte[] x, final byte[] y) { + if (x == null || y == null) { + return false; + } + if (x.length != y.length) { + return false; + } + int res = 0; + for (int i = 0; i < x.length; i++) { + res |= x[i] ^ y[i]; + } + return res == 0; + } + + /** + * Checks that the point is on curve + */ + boolean isOnCurve() { + long[] x2 = new long[Field25519.LIMB_CNT]; + Field25519.square(x2, x); + long[] y2 = new long[Field25519.LIMB_CNT]; + Field25519.square(y2, y); + long[] z2 = new long[Field25519.LIMB_CNT]; + Field25519.square(z2, z); + long[] z4 = new long[Field25519.LIMB_CNT]; + Field25519.square(z4, z2); + long[] lhs = new long[Field25519.LIMB_CNT]; + // lhs = y^2 - x^2 + Field25519.sub(lhs, y2, x2); + // lhs = z^2 * (y2 - x2) + Field25519.mult(lhs, lhs, z2); + long[] rhs = new long[Field25519.LIMB_CNT]; + // rhs = x^2 * y^2 + Field25519.mult(rhs, x2, y2); + // rhs = D * x^2 * y^2 + Field25519.mult(rhs, rhs, D); + // rhs = z^4 + D * x^2 * y^2 + Field25519.sum(rhs, z4); + // Field25519.mult reduces its output, but Field25519.sum does not, so we have to manually + // reduce it here. + Field25519.reduce(rhs, rhs); + // z^2 (y^2 - x^2) == z^4 + D * x^2 * y^2 + return bytesEqual(Field25519.contract(lhs), Field25519.contract(rhs)); + } + } + + /** + * Represents extended projective point representation (X:Y:Z:T) satisfying x = X/Z, y = Y/Z, + * XY = ZT + * <p> + * Note that this is referred as ge_p3 in ref10 impl. + * Also note that t = T below following Java coding style. + * <p> + * See + * Hisil H., Wong K.KH., Carter G., Dawson E. (2008) Twisted Edwards Curves Revisited. + * <p> + * https://hyperelliptic.org/EFD/g1p/auto-twisted-extended.html + */ + private static class XYZT { + + final XYZ xyz; + final long[] t; + + XYZT() { + this(new XYZ(), new long[Field25519.LIMB_CNT]); + } + + XYZT(XYZ xyz, long[] t) { + this.xyz = xyz; + this.t = t; + } + + XYZT(PartialXYZT partialXYZT) { + this(); + fromPartialXYZT(this, partialXYZT); + } + + /** + * ge_p1p1_to_p2.c + */ + private static XYZT fromPartialXYZT(XYZT out, PartialXYZT in) { + Field25519.mult(out.xyz.x, in.xyz.x, in.t); + Field25519.mult(out.xyz.y, in.xyz.y, in.xyz.z); + Field25519.mult(out.xyz.z, in.xyz.z, in.t); + Field25519.mult(out.t, in.xyz.x, in.xyz.y); + return out; + } + + /** + * Decodes {@code s} into an extented projective point. + * See Section 5.1.3 Decoding in https://tools.ietf.org/html/rfc8032#section-5.1.3 + */ + private static XYZT fromBytesNegateVarTime(byte[] s) throws GeneralSecurityException { + long[] x = new long[Field25519.LIMB_CNT]; + long[] y = Field25519.expand(s); + long[] z = new long[Field25519.LIMB_CNT]; + z[0] = 1; + long[] t = new long[Field25519.LIMB_CNT]; + long[] u = new long[Field25519.LIMB_CNT]; + long[] v = new long[Field25519.LIMB_CNT]; + long[] vxx = new long[Field25519.LIMB_CNT]; + long[] check = new long[Field25519.LIMB_CNT]; + Field25519.square(u, y); + Field25519.mult(v, u, D); + Field25519.sub(u, u, z); // u = y^2 - 1 + Field25519.sum(v, v, z); // v = dy^2 + 1 + + long[] v3 = new long[Field25519.LIMB_CNT]; + Field25519.square(v3, v); + Field25519.mult(v3, v3, v); // v3 = v^3 + Field25519.square(x, v3); + Field25519.mult(x, x, v); + Field25519.mult(x, x, u); // x = uv^7 + + pow2252m3(x, x); // x = (uv^7)^((q-5)/8) + Field25519.mult(x, x, v3); + Field25519.mult(x, x, u); // x = uv^3(uv^7)^((q-5)/8) + + Field25519.square(vxx, x); + Field25519.mult(vxx, vxx, v); + Field25519.sub(check, vxx, u); // vx^2-u + if (isNonZeroVarTime(check)) { + Field25519.sum(check, vxx, u); // vx^2+u + if (isNonZeroVarTime(check)) { + throw new GeneralSecurityException("Cannot convert given bytes to extended projective " + + "coordinates. No square root exists for modulo 2^255-19"); + } + Field25519.mult(x, x, SQRTM1); + } + + if (!isNonZeroVarTime(x) && (s[31] & 0xff) >> 7 != 0) { + throw new GeneralSecurityException("Cannot convert given bytes to extended projective " + + "coordinates. Computed x is zero and encoded x's least significant bit is not zero"); + } + if (getLsb(x) == ((s[31] & 0xff) >> 7)) { + neg(x, x); + } + + Field25519.mult(t, x, y); + return new XYZT(new XYZ(x, y, z), t); + } + } + + /** + * Partial projective point representation ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T + * <p> + * Note that this is referred as complete form in the original ref10 impl (ge_p1p1). + * Also note that t = T below following Java coding style. + * <p> + * Although this has the same types as XYZT, it is redefined to have its own type so that it is + * readable and 1:1 corresponds to ref10 impl. + * <p> + * Can be converted to XYZT as follows: + * X1 = X * T = x * Z * T = x * Z1 + * Y1 = Y * Z = y * T * Z = y * Z1 + * Z1 = Z * T = Z * T + * T1 = X * Y = x * Z * y * T = x * y * Z1 = X1Y1 / Z1 + */ + private static class PartialXYZT { + + final XYZ xyz; + final long[] t; + + PartialXYZT() { + this(new XYZ(), new long[Field25519.LIMB_CNT]); + } + + PartialXYZT(XYZ xyz, long[] t) { + this.xyz = xyz; + this.t = t; + } + + PartialXYZT(PartialXYZT other) { + xyz = new XYZ(other.xyz); + t = Arrays.copyOf(other.t, Field25519.LIMB_CNT); + } + } + + /** + * Corresponds to the caching mentioned in the last paragraph of Section 3.1 of + * Hisil H., Wong K.KH., Carter G., Dawson E. (2008) Twisted Edwards Curves Revisited. + * with Z = 1. + */ + private static class CachedXYT { + + final long[] yPlusX; + final long[] yMinusX; + final long[] t2d; + + /** + * Creates a cached XYZT with Z = 1 + * + * @param yPlusX y + x + * @param yMinusX y - x + * @param t2d 2d * xy + */ + CachedXYT(long[] yPlusX, long[] yMinusX, long[] t2d) { + this.yPlusX = yPlusX; + this.yMinusX = yMinusX; + this.t2d = t2d; + } + + CachedXYT(CachedXYT other) { + yPlusX = Arrays.copyOf(other.yPlusX, Field25519.LIMB_CNT); + yMinusX = Arrays.copyOf(other.yMinusX, Field25519.LIMB_CNT); + t2d = Arrays.copyOf(other.t2d, Field25519.LIMB_CNT); + } + + // z is one implicitly, so this just copies {@code in} to {@code output}. + void multByZ(long[] output, long[] in) { + System.arraycopy(in, 0, output, 0, Field25519.LIMB_CNT); + } + + /** + * If icopy is 1, copies {@code other} into this point. Time invariant wrt to icopy value. + */ + void copyConditional(CachedXYT other, int icopy) { + copyConditional(yPlusX, other.yPlusX, icopy); + copyConditional(yMinusX, other.yMinusX, icopy); + copyConditional(t2d, other.t2d, icopy); + } + + /** + * Conditionally copies a reduced-form limb arrays {@code b} into {@code a} if {@code icopy} is 1, + * but leave {@code a} unchanged if 'iswap' is 0. Runs in data-invariant time to avoid + * side-channel attacks. + * + * <p>NOTE that this function requires that {@code icopy} be 1 or 0; other values give wrong + * results. Also, the two limb arrays must be in reduced-coefficient, reduced-degree form: the + * values in a[10..19] or b[10..19] aren't swapped, and all all values in a[0..9],b[0..9] must + * have magnitude less than Integer.MAX_VALUE. + */ + static void copyConditional(long[] a, long[] b, int icopy) { + int copy = -icopy; + for (int i = 0; i < Field25519.LIMB_CNT; i++) { + int x = copy & (((int) a[i]) ^ ((int) b[i])); + a[i] = ((int) a[i]) ^ x; + } + } + } + + private static class CachedXYZT extends CachedXYT { + + private final long[] z; + + CachedXYZT() { + this(new long[Field25519.LIMB_CNT], new long[Field25519.LIMB_CNT], new long[Field25519.LIMB_CNT], new long[Field25519.LIMB_CNT]); + } + + /** + * ge_p3_to_cached.c + */ + CachedXYZT(XYZT xyzt) { + this(); + Field25519.sum(yPlusX, xyzt.xyz.y, xyzt.xyz.x); + Field25519.sub(yMinusX, xyzt.xyz.y, xyzt.xyz.x); + System.arraycopy(xyzt.xyz.z, 0, z, 0, Field25519.LIMB_CNT); + Field25519.mult(t2d, xyzt.t, D2); + } + + /** + * Creates a cached XYZT + * + * @param yPlusX Y + X + * @param yMinusX Y - X + * @param z Z + * @param t2d 2d * (XY/Z) + */ + CachedXYZT(long[] yPlusX, long[] yMinusX, long[] z, long[] t2d) { + super(yPlusX, yMinusX, t2d); + this.z = z; + } + + @Override + public void multByZ(long[] output, long[] in) { + Field25519.mult(output, in, z); + } + } + + /** + * Addition defined in Section 3.1 of + * Hisil H., Wong K.KH., Carter G., Dawson E. (2008) Twisted Edwards Curves Revisited. + * <p> + * Please note that this is a partial of the operation listed there leaving out the final + * conversion from PartialXYZT to XYZT. + * + * @param extended extended projective point input + * @param cached cached projective point input + */ + private static void add(PartialXYZT partialXYZT, XYZT extended, CachedXYT cached) { + long[] t = new long[Field25519.LIMB_CNT]; + + // Y1 + X1 + Field25519.sum(partialXYZT.xyz.x, extended.xyz.y, extended.xyz.x); + + // Y1 - X1 + Field25519.sub(partialXYZT.xyz.y, extended.xyz.y, extended.xyz.x); + + // A = (Y1 - X1) * (Y2 - X2) + Field25519.mult(partialXYZT.xyz.y, partialXYZT.xyz.y, cached.yMinusX); + + // B = (Y1 + X1) * (Y2 + X2) + Field25519.mult(partialXYZT.xyz.z, partialXYZT.xyz.x, cached.yPlusX); + + // C = T1 * 2d * T2 = 2d * T1 * T2 (2d is written as k in the paper) + Field25519.mult(partialXYZT.t, extended.t, cached.t2d); + + // Z1 * Z2 + cached.multByZ(partialXYZT.xyz.x, extended.xyz.z); + + // D = 2 * Z1 * Z2 + Field25519.sum(t, partialXYZT.xyz.x, partialXYZT.xyz.x); + + // X3 = B - A + Field25519.sub(partialXYZT.xyz.x, partialXYZT.xyz.z, partialXYZT.xyz.y); + + // Y3 = B + A + Field25519.sum(partialXYZT.xyz.y, partialXYZT.xyz.z, partialXYZT.xyz.y); + + // Z3 = D + C + Field25519.sum(partialXYZT.xyz.z, t, partialXYZT.t); + + // T3 = D - C + Field25519.sub(partialXYZT.t, t, partialXYZT.t); + } + + /** + * Based on the addition defined in Section 3.1 of + * Hisil H., Wong K.KH., Carter G., Dawson E. (2008) Twisted Edwards Curves Revisited. + * <p> + * Please note that this is a partial of the operation listed there leaving out the final + * conversion from PartialXYZT to XYZT. + * + * @param extended extended projective point input + * @param cached cached projective point input + */ + private static void sub(PartialXYZT partialXYZT, XYZT extended, CachedXYT cached) { + long[] t = new long[Field25519.LIMB_CNT]; + + // Y1 + X1 + Field25519.sum(partialXYZT.xyz.x, extended.xyz.y, extended.xyz.x); + + // Y1 - X1 + Field25519.sub(partialXYZT.xyz.y, extended.xyz.y, extended.xyz.x); + + // A = (Y1 - X1) * (Y2 + X2) + Field25519.mult(partialXYZT.xyz.y, partialXYZT.xyz.y, cached.yPlusX); + + // B = (Y1 + X1) * (Y2 - X2) + Field25519.mult(partialXYZT.xyz.z, partialXYZT.xyz.x, cached.yMinusX); + + // C = T1 * 2d * T2 = 2d * T1 * T2 (2d is written as k in the paper) + Field25519.mult(partialXYZT.t, extended.t, cached.t2d); + + // Z1 * Z2 + cached.multByZ(partialXYZT.xyz.x, extended.xyz.z); + + // D = 2 * Z1 * Z2 + Field25519.sum(t, partialXYZT.xyz.x, partialXYZT.xyz.x); + + // X3 = B - A + Field25519.sub(partialXYZT.xyz.x, partialXYZT.xyz.z, partialXYZT.xyz.y); + + // Y3 = B + A + Field25519.sum(partialXYZT.xyz.y, partialXYZT.xyz.z, partialXYZT.xyz.y); + + // Z3 = D - C + Field25519.sub(partialXYZT.xyz.z, t, partialXYZT.t); + + // T3 = D + C + Field25519.sum(partialXYZT.t, t, partialXYZT.t); + } + + /** + * Doubles {@code p} and puts the result into this PartialXYZT. + * <p> + * This is based on the addition defined in formula 7 in Section 3.3 of + * Hisil H., Wong K.KH., Carter G., Dawson E. (2008) Twisted Edwards Curves Revisited. + * <p> + * Please note that this is a partial of the operation listed there leaving out the final + * conversion from PartialXYZT to XYZT and also this fixes a typo in calculation of Y3 and T3 in + * the paper, H should be replaced with A+B. + */ + private static void doubleXYZ(PartialXYZT partialXYZT, XYZ p) { + long[] t0 = new long[Field25519.LIMB_CNT]; + + // XX = X1^2 + Field25519.square(partialXYZT.xyz.x, p.x); + + // YY = Y1^2 + Field25519.square(partialXYZT.xyz.z, p.y); + + // B' = Z1^2 + Field25519.square(partialXYZT.t, p.z); + + // B = 2 * B' + Field25519.sum(partialXYZT.t, partialXYZT.t, partialXYZT.t); + + // A = X1 + Y1 + Field25519.sum(partialXYZT.xyz.y, p.x, p.y); + + // AA = A^2 + Field25519.square(t0, partialXYZT.xyz.y); + + // Y3 = YY + XX + Field25519.sum(partialXYZT.xyz.y, partialXYZT.xyz.z, partialXYZT.xyz.x); + + // Z3 = YY - XX + Field25519.sub(partialXYZT.xyz.z, partialXYZT.xyz.z, partialXYZT.xyz.x); + + // X3 = AA - Y3 + Field25519.sub(partialXYZT.xyz.x, t0, partialXYZT.xyz.y); + + // T3 = B - Z3 + Field25519.sub(partialXYZT.t, partialXYZT.t, partialXYZT.xyz.z); + } + + /** + * Doubles {@code p} and puts the result into this PartialXYZT. + */ + private static void doubleXYZT(PartialXYZT partialXYZT, XYZT p) { + doubleXYZ(partialXYZT, p.xyz); + } + + /** + * Compares two byte values in constant time. + */ + private static int eq(int a, int b) { + int r = ~(a ^ b) & 0xff; + r &= r << 4; + r &= r << 2; + r &= r << 1; + return (r >> 7) & 1; + } + + /** + * This is a constant time operation where point b*B*256^pos is stored in {@code t}. + * When b is 0, t remains the same (i.e., neutral point). + * <p> + * Although B_TABLE[32][8] (B_TABLE[i][j] = (j+1)*B*256^i) has j values in [0, 7], the select + * method negates the corresponding point if b is negative (which is straight forward in elliptic + * curves by just negating y coordinate). Therefore we can get multiples of B with the half of + * memory requirements. + * + * @param t neutral element (i.e., point 0), also serves as output. + * @param pos in B[pos][j] = (j+1)*B*256^pos + * @param b value in [-8, 8] range. + */ + private static void select(CachedXYT t, int pos, byte b) { + int bnegative = (b & 0xff) >> 7; + int babs = b - (((-bnegative) & b) << 1); + + t.copyConditional(B_TABLE[pos][0], eq(babs, 1)); + t.copyConditional(B_TABLE[pos][1], eq(babs, 2)); + t.copyConditional(B_TABLE[pos][2], eq(babs, 3)); + t.copyConditional(B_TABLE[pos][3], eq(babs, 4)); + t.copyConditional(B_TABLE[pos][4], eq(babs, 5)); + t.copyConditional(B_TABLE[pos][5], eq(babs, 6)); + t.copyConditional(B_TABLE[pos][6], eq(babs, 7)); + t.copyConditional(B_TABLE[pos][7], eq(babs, 8)); + + long[] yPlusX = Arrays.copyOf(t.yMinusX, Field25519.LIMB_CNT); + long[] yMinusX = Arrays.copyOf(t.yPlusX, Field25519.LIMB_CNT); + long[] t2d = Arrays.copyOf(t.t2d, Field25519.LIMB_CNT); + neg(t2d, t2d); + CachedXYT minust = new CachedXYT(yPlusX, yMinusX, t2d); + t.copyConditional(minust, bnegative); + } + + /** + * Computes {@code a}*B + * where a = a[0]+256*a[1]+...+256^31 a[31] and + * B is the Ed25519 base point (x,4/5) with x positive. + * <p> + * Preconditions: + * a[31] <= 127 + * + * @throws IllegalStateException iff there is arithmetic error. + */ + @SuppressWarnings("NarrowingCompoundAssignment") + private static XYZ scalarMultWithBase(byte[] a) { + byte[] e = new byte[2 * Field25519.FIELD_LEN]; + for (int i = 0; i < Field25519.FIELD_LEN; i++) { + e[2 * i + 0] = (byte) (((a[i] & 0xff) >> 0) & 0xf); + e[2 * i + 1] = (byte) (((a[i] & 0xff) >> 4) & 0xf); + } + // each e[i] is between 0 and 15 + // e[63] is between 0 and 7 + + // Rewrite e in a way that each e[i] is in [-8, 8]. + // This can be done since a[63] is in [0, 7], the carry-over onto the most significant byte + // a[63] can be at most 1. + int carry = 0; + for (int i = 0; i < e.length - 1; i++) { + e[i] += carry; + carry = e[i] + 8; + carry >>= 4; + e[i] -= carry << 4; + } + e[e.length - 1] += carry; + + PartialXYZT ret = new PartialXYZT(NEUTRAL); + XYZT xyzt = new XYZT(); + // Although B_TABLE's i can be at most 31 (stores only 32 4bit multiples of B) and we have 64 + // 4bit values in e array, the below for loop adds cached values by iterating e by two in odd + // indices. After the result, we can double the result point 4 times to shift the multiplication + // scalar by 4 bits. + for (int i = 1; i < e.length; i += 2) { + CachedXYT t = new CachedXYT(CACHED_NEUTRAL); + select(t, i / 2, e[i]); + add(ret, XYZT.fromPartialXYZT(xyzt, ret), t); + } + + // Doubles the result 4 times to shift the multiplication scalar 4 bits to get the actual result + // for the odd indices in e. + XYZ xyz = new XYZ(); + doubleXYZ(ret, XYZ.fromPartialXYZT(xyz, ret)); + doubleXYZ(ret, XYZ.fromPartialXYZT(xyz, ret)); + doubleXYZ(ret, XYZ.fromPartialXYZT(xyz, ret)); + doubleXYZ(ret, XYZ.fromPartialXYZT(xyz, ret)); + + // Add multiples of B for even indices of e. + for (int i = 0; i < e.length; i += 2) { + CachedXYT t = new CachedXYT(CACHED_NEUTRAL); + select(t, i / 2, e[i]); + add(ret, XYZT.fromPartialXYZT(xyzt, ret), t); + } + + // This check is to protect against flaws, i.e. if there is a computation error through a + // faulty CPU or if the implementation contains a bug. + XYZ result = new XYZ(ret); + if (!result.isOnCurve()) { + throw new IllegalStateException("arithmetic error in scalar multiplication"); + } + return result; + } + + @SuppressWarnings("NarrowingCompoundAssignment") + private static byte[] slide(byte[] a) { + byte[] r = new byte[256]; + // Writes each bit in a[0..31] into r[0..255]: + // a = a[0]+256*a[1]+...+256^31*a[31] is equal to + // r = r[0]+2*r[1]+...+2^255*r[255] + for (int i = 0; i < 256; i++) { + r[i] = (byte) (1 & ((a[i >> 3] & 0xff) >> (i & 7))); + } + + // Transforms r[i] as odd values in [-15, 15] + for (int i = 0; i < 256; i++) { + if (r[i] != 0) { + for (int b = 1; b <= 6 && i + b < 256; b++) { + if (r[i + b] != 0) { + if (r[i] + (r[i + b] << b) <= 15) { + r[i] += r[i + b] << b; + r[i + b] = 0; + } else if (r[i] - (r[i + b] << b) >= -15) { + r[i] -= r[i + b] << b; + for (int k = i + b; k < 256; k++) { + if (r[k] == 0) { + r[k] = 1; + break; + } + r[k] = 0; + } + } else { + break; + } + } + } + } + } + return r; + } + + /** + * Computes {@code a}*{@code pointA}+{@code b}*B + * where a = a[0]+256*a[1]+...+256^31*a[31]. + * and b = b[0]+256*b[1]+...+256^31*b[31]. + * B is the Ed25519 base point (x,4/5) with x positive. + * <p> + * Note that execution time varies based on the input since this will only be used in verification + * of signatures. + */ + private static XYZ doubleScalarMultVarTime(byte[] a, XYZT pointA, byte[] b) { + // pointA, 3*pointA, 5*pointA, 7*pointA, 9*pointA, 11*pointA, 13*pointA, 15*pointA + CachedXYZT[] pointAArray = new CachedXYZT[8]; + pointAArray[0] = new CachedXYZT(pointA); + PartialXYZT t = new PartialXYZT(); + doubleXYZT(t, pointA); + XYZT doubleA = new XYZT(t); + for (int i = 1; i < pointAArray.length; i++) { + add(t, doubleA, pointAArray[i - 1]); + pointAArray[i] = new CachedXYZT(new XYZT(t)); + } + + byte[] aSlide = slide(a); + byte[] bSlide = slide(b); + t = new PartialXYZT(NEUTRAL); + XYZT u = new XYZT(); + int i = 255; + for (; i >= 0; i--) { + if (aSlide[i] != 0 || bSlide[i] != 0) { + break; + } + } + for (; i >= 0; i--) { + doubleXYZ(t, new XYZ(t)); + if (aSlide[i] > 0) { + add(t, XYZT.fromPartialXYZT(u, t), pointAArray[aSlide[i] / 2]); + } else if (aSlide[i] < 0) { + sub(t, XYZT.fromPartialXYZT(u, t), pointAArray[-aSlide[i] / 2]); + } + if (bSlide[i] > 0) { + add(t, XYZT.fromPartialXYZT(u, t), B2[bSlide[i] / 2]); + } else if (bSlide[i] < 0) { + sub(t, XYZT.fromPartialXYZT(u, t), B2[-bSlide[i] / 2]); + } + } + + return new XYZ(t); + } + + /** + * Returns true if {@code in} is nonzero. + * <p> + * Note that execution time might depend on the input {@code in}. + */ + private static boolean isNonZeroVarTime(long[] in) { + long[] inCopy = new long[in.length + 1]; + System.arraycopy(in, 0, inCopy, 0, in.length); + Field25519.reduceCoefficients(inCopy); + byte[] bytes = Field25519.contract(inCopy); + for (byte b : bytes) { + if (b != 0) { + return true; + } + } + return false; + } + + /** + * Returns the least significant bit of {@code in}. + */ + private static int getLsb(long[] in) { + return Field25519.contract(in)[0] & 1; + } + + /** + * Negates all values in {@code in} and store it in {@code out}. + */ + private static void neg(long[] out, long[] in) { + for (int i = 0; i < in.length; i++) { + out[i] = -in[i]; + } + } + + /** + * Computes {@code in}^(2^252-3) mod 2^255-19 and puts the result in {@code out}. + */ + private static void pow2252m3(long[] out, long[] in) { + long[] t0 = new long[Field25519.LIMB_CNT]; + long[] t1 = new long[Field25519.LIMB_CNT]; + long[] t2 = new long[Field25519.LIMB_CNT]; + + // z2 = z1^2^1 + Field25519.square(t0, in); + + // z8 = z2^2^2 + Field25519.square(t1, t0); + for (int i = 1; i < 2; i++) { + Field25519.square(t1, t1); + } + + // z9 = z1*z8 + Field25519.mult(t1, in, t1); + + // z11 = z2*z9 + Field25519.mult(t0, t0, t1); + + // z22 = z11^2^1 + Field25519.square(t0, t0); + + // z_5_0 = z9*z22 + Field25519.mult(t0, t1, t0); + + // z_10_5 = z_5_0^2^5 + Field25519.square(t1, t0); + for (int i = 1; i < 5; i++) { + Field25519.square(t1, t1); + } + + // z_10_0 = z_10_5*z_5_0 + Field25519.mult(t0, t1, t0); + + // z_20_10 = z_10_0^2^10 + Field25519.square(t1, t0); + for (int i = 1; i < 10; i++) { + Field25519.square(t1, t1); + } + + // z_20_0 = z_20_10*z_10_0 + Field25519.mult(t1, t1, t0); + + // z_40_20 = z_20_0^2^20 + Field25519.square(t2, t1); + for (int i = 1; i < 20; i++) { + Field25519.square(t2, t2); + } + + // z_40_0 = z_40_20*z_20_0 + Field25519.mult(t1, t2, t1); + + // z_50_10 = z_40_0^2^10 + Field25519.square(t1, t1); + for (int i = 1; i < 10; i++) { + Field25519.square(t1, t1); + } + + // z_50_0 = z_50_10*z_10_0 + Field25519.mult(t0, t1, t0); + + // z_100_50 = z_50_0^2^50 + Field25519.square(t1, t0); + for (int i = 1; i < 50; i++) { + Field25519.square(t1, t1); + } + + // z_100_0 = z_100_50*z_50_0 + Field25519.mult(t1, t1, t0); + + // z_200_100 = z_100_0^2^100 + Field25519.square(t2, t1); + for (int i = 1; i < 100; i++) { + Field25519.square(t2, t2); + } + + // z_200_0 = z_200_100*z_100_0 + Field25519.mult(t1, t2, t1); + + // z_250_50 = z_200_0^2^50 + Field25519.square(t1, t1); + for (int i = 1; i < 50; i++) { + Field25519.square(t1, t1); + } + + // z_250_0 = z_250_50*z_50_0 + Field25519.mult(t0, t1, t0); + + // z_252_2 = z_250_0^2^2 + Field25519.square(t0, t0); + for (int i = 1; i < 2; i++) { + Field25519.square(t0, t0); + } + + // z_252_3 = z_252_2*z1 + Field25519.mult(out, t0, in); + } + + /** + * Returns 3 bytes of {@code in} starting from {@code idx} in Little-Endian format. + */ + private static long load3(byte[] in, int idx) { + long result; + result = (long) in[idx] & 0xff; + result |= (long) (in[idx + 1] & 0xff) << 8; + result |= (long) (in[idx + 2] & 0xff) << 16; + return result; + } + + /** + * Returns 4 bytes of {@code in} starting from {@code idx} in Little-Endian format. + */ + private static long load4(byte[] in, int idx) { + long result = load3(in, idx); + result |= (long) (in[idx + 3] & 0xff) << 24; + return result; + } + + /** + * Input: + * s[0]+256*s[1]+...+256^63*s[63] = s + * <p> + * Output: + * s[0]+256*s[1]+...+256^31*s[31] = s mod l + * where l = 2^252 + 27742317777372353535851937790883648493. + * Overwrites s in place. + */ + private static void reduce(byte[] s) { + // Observation: + // 2^252 mod l is equivalent to -27742317777372353535851937790883648493 mod l + // Let m = -27742317777372353535851937790883648493 + // Thus a*2^252+b mod l is equivalent to a*m+b mod l + // + // First s is divided into chunks of 21 bits as follows: + // s0+2^21*s1+2^42*s3+...+2^462*s23 = s[0]+256*s[1]+...+256^63*s[63] + long s0 = 2097151 & load3(s, 0); + long s1 = 2097151 & (load4(s, 2) >> 5); + long s2 = 2097151 & (load3(s, 5) >> 2); + long s3 = 2097151 & (load4(s, 7) >> 7); + long s4 = 2097151 & (load4(s, 10) >> 4); + long s5 = 2097151 & (load3(s, 13) >> 1); + long s6 = 2097151 & (load4(s, 15) >> 6); + long s7 = 2097151 & (load3(s, 18) >> 3); + long s8 = 2097151 & load3(s, 21); + long s9 = 2097151 & (load4(s, 23) >> 5); + long s10 = 2097151 & (load3(s, 26) >> 2); + long s11 = 2097151 & (load4(s, 28) >> 7); + long s12 = 2097151 & (load4(s, 31) >> 4); + long s13 = 2097151 & (load3(s, 34) >> 1); + long s14 = 2097151 & (load4(s, 36) >> 6); + long s15 = 2097151 & (load3(s, 39) >> 3); + long s16 = 2097151 & load3(s, 42); + long s17 = 2097151 & (load4(s, 44) >> 5); + long s18 = 2097151 & (load3(s, 47) >> 2); + long s19 = 2097151 & (load4(s, 49) >> 7); + long s20 = 2097151 & (load4(s, 52) >> 4); + long s21 = 2097151 & (load3(s, 55) >> 1); + long s22 = 2097151 & (load4(s, 57) >> 6); + long s23 = (load4(s, 60) >> 3); + long carry0; + long carry1; + long carry2; + long carry3; + long carry4; + long carry5; + long carry6; + long carry7; + long carry8; + long carry9; + long carry10; + long carry11; + long carry12; + long carry13; + long carry14; + long carry15; + long carry16; + + // s23*2^462 = s23*2^210*2^252 is equivalent to s23*2^210*m in mod l + // As m is a 125 bit number, the result needs to scattered to 6 limbs (125/21 ceil is 6) + // starting from s11 (s11*2^210) + // m = [666643, 470296, 654183, -997805, 136657, -683901] in 21-bit limbs + s11 += s23 * 666643; + s12 += s23 * 470296; + s13 += s23 * 654183; + s14 -= s23 * 997805; + s15 += s23 * 136657; + s16 -= s23 * 683901; + // s23 = 0; + + s10 += s22 * 666643; + s11 += s22 * 470296; + s12 += s22 * 654183; + s13 -= s22 * 997805; + s14 += s22 * 136657; + s15 -= s22 * 683901; + // s22 = 0; + + s9 += s21 * 666643; + s10 += s21 * 470296; + s11 += s21 * 654183; + s12 -= s21 * 997805; + s13 += s21 * 136657; + s14 -= s21 * 683901; + // s21 = 0; + + s8 += s20 * 666643; + s9 += s20 * 470296; + s10 += s20 * 654183; + s11 -= s20 * 997805; + s12 += s20 * 136657; + s13 -= s20 * 683901; + // s20 = 0; + + s7 += s19 * 666643; + s8 += s19 * 470296; + s9 += s19 * 654183; + s10 -= s19 * 997805; + s11 += s19 * 136657; + s12 -= s19 * 683901; + // s19 = 0; + + s6 += s18 * 666643; + s7 += s18 * 470296; + s8 += s18 * 654183; + s9 -= s18 * 997805; + s10 += s18 * 136657; + s11 -= s18 * 683901; + // s18 = 0; + + // Reduce the bit length of limbs from s6 to s15 to 21-bits. + carry6 = (s6 + (1 << 20)) >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry8 = (s8 + (1 << 20)) >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry10 = (s10 + (1 << 20)) >> 21; + s11 += carry10; + s10 -= carry10 << 21; + carry12 = (s12 + (1 << 20)) >> 21; + s13 += carry12; + s12 -= carry12 << 21; + carry14 = (s14 + (1 << 20)) >> 21; + s15 += carry14; + s14 -= carry14 << 21; + carry16 = (s16 + (1 << 20)) >> 21; + s17 += carry16; + s16 -= carry16 << 21; + + carry7 = (s7 + (1 << 20)) >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry9 = (s9 + (1 << 20)) >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry11 = (s11 + (1 << 20)) >> 21; + s12 += carry11; + s11 -= carry11 << 21; + carry13 = (s13 + (1 << 20)) >> 21; + s14 += carry13; + s13 -= carry13 << 21; + carry15 = (s15 + (1 << 20)) >> 21; + s16 += carry15; + s15 -= carry15 << 21; + + // Resume reduction where we left off. + s5 += s17 * 666643; + s6 += s17 * 470296; + s7 += s17 * 654183; + s8 -= s17 * 997805; + s9 += s17 * 136657; + s10 -= s17 * 683901; + // s17 = 0; + + s4 += s16 * 666643; + s5 += s16 * 470296; + s6 += s16 * 654183; + s7 -= s16 * 997805; + s8 += s16 * 136657; + s9 -= s16 * 683901; + // s16 = 0; + + s3 += s15 * 666643; + s4 += s15 * 470296; + s5 += s15 * 654183; + s6 -= s15 * 997805; + s7 += s15 * 136657; + s8 -= s15 * 683901; + // s15 = 0; + + s2 += s14 * 666643; + s3 += s14 * 470296; + s4 += s14 * 654183; + s5 -= s14 * 997805; + s6 += s14 * 136657; + s7 -= s14 * 683901; + // s14 = 0; + + s1 += s13 * 666643; + s2 += s13 * 470296; + s3 += s13 * 654183; + s4 -= s13 * 997805; + s5 += s13 * 136657; + s6 -= s13 * 683901; + // s13 = 0; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + // Reduce the range of limbs from s0 to s11 to 21-bits. + carry0 = (s0 + (1 << 20)) >> 21; + s1 += carry0; + s0 -= carry0 << 21; + carry2 = (s2 + (1 << 20)) >> 21; + s3 += carry2; + s2 -= carry2 << 21; + carry4 = (s4 + (1 << 20)) >> 21; + s5 += carry4; + s4 -= carry4 << 21; + carry6 = (s6 + (1 << 20)) >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry8 = (s8 + (1 << 20)) >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry10 = (s10 + (1 << 20)) >> 21; + s11 += carry10; + s10 -= carry10 << 21; + + carry1 = (s1 + (1 << 20)) >> 21; + s2 += carry1; + s1 -= carry1 << 21; + carry3 = (s3 + (1 << 20)) >> 21; + s4 += carry3; + s3 -= carry3 << 21; + carry5 = (s5 + (1 << 20)) >> 21; + s6 += carry5; + s5 -= carry5 << 21; + carry7 = (s7 + (1 << 20)) >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry9 = (s9 + (1 << 20)) >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry11 = (s11 + (1 << 20)) >> 21; + s12 += carry11; + s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + // Carry chain reduction to propagate excess bits from s0 to s5 to the most significant limbs. + carry0 = s0 >> 21; + s1 += carry0; + s0 -= carry0 << 21; + carry1 = s1 >> 21; + s2 += carry1; + s1 -= carry1 << 21; + carry2 = s2 >> 21; + s3 += carry2; + s2 -= carry2 << 21; + carry3 = s3 >> 21; + s4 += carry3; + s3 -= carry3 << 21; + carry4 = s4 >> 21; + s5 += carry4; + s4 -= carry4 << 21; + carry5 = s5 >> 21; + s6 += carry5; + s5 -= carry5 << 21; + carry6 = s6 >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry7 = s7 >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry8 = s8 >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry9 = s9 >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry10 = s10 >> 21; + s11 += carry10; + s10 -= carry10 << 21; + carry11 = s11 >> 21; + s12 += carry11; + s11 -= carry11 << 21; + + // Do one last reduction as s12 might be 1. + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + // s12 = 0; + + carry0 = s0 >> 21; + s1 += carry0; + s0 -= carry0 << 21; + carry1 = s1 >> 21; + s2 += carry1; + s1 -= carry1 << 21; + carry2 = s2 >> 21; + s3 += carry2; + s2 -= carry2 << 21; + carry3 = s3 >> 21; + s4 += carry3; + s3 -= carry3 << 21; + carry4 = s4 >> 21; + s5 += carry4; + s4 -= carry4 << 21; + carry5 = s5 >> 21; + s6 += carry5; + s5 -= carry5 << 21; + carry6 = s6 >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry7 = s7 >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry8 = s8 >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry9 = s9 >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry10 = s10 >> 21; + s11 += carry10; + s10 -= carry10 << 21; + + // Serialize the result into the s. + s[0] = (byte) s0; + s[1] = (byte) (s0 >> 8); + s[2] = (byte) ((s0 >> 16) | (s1 << 5)); + s[3] = (byte) (s1 >> 3); + s[4] = (byte) (s1 >> 11); + s[5] = (byte) ((s1 >> 19) | (s2 << 2)); + s[6] = (byte) (s2 >> 6); + s[7] = (byte) ((s2 >> 14) | (s3 << 7)); + s[8] = (byte) (s3 >> 1); + s[9] = (byte) (s3 >> 9); + s[10] = (byte) ((s3 >> 17) | (s4 << 4)); + s[11] = (byte) (s4 >> 4); + s[12] = (byte) (s4 >> 12); + s[13] = (byte) ((s4 >> 20) | (s5 << 1)); + s[14] = (byte) (s5 >> 7); + s[15] = (byte) ((s5 >> 15) | (s6 << 6)); + s[16] = (byte) (s6 >> 2); + s[17] = (byte) (s6 >> 10); + s[18] = (byte) ((s6 >> 18) | (s7 << 3)); + s[19] = (byte) (s7 >> 5); + s[20] = (byte) (s7 >> 13); + s[21] = (byte) s8; + s[22] = (byte) (s8 >> 8); + s[23] = (byte) ((s8 >> 16) | (s9 << 5)); + s[24] = (byte) (s9 >> 3); + s[25] = (byte) (s9 >> 11); + s[26] = (byte) ((s9 >> 19) | (s10 << 2)); + s[27] = (byte) (s10 >> 6); + s[28] = (byte) ((s10 >> 14) | (s11 << 7)); + s[29] = (byte) (s11 >> 1); + s[30] = (byte) (s11 >> 9); + s[31] = (byte) (s11 >> 17); + } + + /** + * Input: + * a[0]+256*a[1]+...+256^31*a[31] = a + * b[0]+256*b[1]+...+256^31*b[31] = b + * c[0]+256*c[1]+...+256^31*c[31] = c + * <p> + * Output: + * s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l + * where l = 2^252 + 27742317777372353535851937790883648493. + */ + private static void mulAdd(byte[] s, byte[] a, byte[] b, byte[] c) { + // This is very similar to Ed25519.reduce, the difference in here is that it computes ab+c + // See Ed25519.reduce for related comments. + long a0 = 2097151 & load3(a, 0); + long a1 = 2097151 & (load4(a, 2) >> 5); + long a2 = 2097151 & (load3(a, 5) >> 2); + long a3 = 2097151 & (load4(a, 7) >> 7); + long a4 = 2097151 & (load4(a, 10) >> 4); + long a5 = 2097151 & (load3(a, 13) >> 1); + long a6 = 2097151 & (load4(a, 15) >> 6); + long a7 = 2097151 & (load3(a, 18) >> 3); + long a8 = 2097151 & load3(a, 21); + long a9 = 2097151 & (load4(a, 23) >> 5); + long a10 = 2097151 & (load3(a, 26) >> 2); + long a11 = (load4(a, 28) >> 7); + long b0 = 2097151 & load3(b, 0); + long b1 = 2097151 & (load4(b, 2) >> 5); + long b2 = 2097151 & (load3(b, 5) >> 2); + long b3 = 2097151 & (load4(b, 7) >> 7); + long b4 = 2097151 & (load4(b, 10) >> 4); + long b5 = 2097151 & (load3(b, 13) >> 1); + long b6 = 2097151 & (load4(b, 15) >> 6); + long b7 = 2097151 & (load3(b, 18) >> 3); + long b8 = 2097151 & load3(b, 21); + long b9 = 2097151 & (load4(b, 23) >> 5); + long b10 = 2097151 & (load3(b, 26) >> 2); + long b11 = (load4(b, 28) >> 7); + long c0 = 2097151 & load3(c, 0); + long c1 = 2097151 & (load4(c, 2) >> 5); + long c2 = 2097151 & (load3(c, 5) >> 2); + long c3 = 2097151 & (load4(c, 7) >> 7); + long c4 = 2097151 & (load4(c, 10) >> 4); + long c5 = 2097151 & (load3(c, 13) >> 1); + long c6 = 2097151 & (load4(c, 15) >> 6); + long c7 = 2097151 & (load3(c, 18) >> 3); + long c8 = 2097151 & load3(c, 21); + long c9 = 2097151 & (load4(c, 23) >> 5); + long c10 = 2097151 & (load3(c, 26) >> 2); + long c11 = (load4(c, 28) >> 7); + long s0; + long s1; + long s2; + long s3; + long s4; + long s5; + long s6; + long s7; + long s8; + long s9; + long s10; + long s11; + long s12; + long s13; + long s14; + long s15; + long s16; + long s17; + long s18; + long s19; + long s20; + long s21; + long s22; + long s23; + long carry0; + long carry1; + long carry2; + long carry3; + long carry4; + long carry5; + long carry6; + long carry7; + long carry8; + long carry9; + long carry10; + long carry11; + long carry12; + long carry13; + long carry14; + long carry15; + long carry16; + long carry17; + long carry18; + long carry19; + long carry20; + long carry21; + long carry22; + + s0 = c0 + a0 * b0; + s1 = c1 + a0 * b1 + a1 * b0; + s2 = c2 + a0 * b2 + a1 * b1 + a2 * b0; + s3 = c3 + a0 * b3 + a1 * b2 + a2 * b1 + a3 * b0; + s4 = c4 + a0 * b4 + a1 * b3 + a2 * b2 + a3 * b1 + a4 * b0; + s5 = c5 + a0 * b5 + a1 * b4 + a2 * b3 + a3 * b2 + a4 * b1 + a5 * b0; + s6 = c6 + a0 * b6 + a1 * b5 + a2 * b4 + a3 * b3 + a4 * b2 + a5 * b1 + a6 * b0; + s7 = c7 + a0 * b7 + a1 * b6 + a2 * b5 + a3 * b4 + a4 * b3 + a5 * b2 + a6 * b1 + a7 * b0; + s8 = c8 + a0 * b8 + a1 * b7 + a2 * b6 + a3 * b5 + a4 * b4 + a5 * b3 + a6 * b2 + a7 * b1 + + a8 * b0; + s9 = c9 + a0 * b9 + a1 * b8 + a2 * b7 + a3 * b6 + a4 * b5 + a5 * b4 + a6 * b3 + a7 * b2 + + a8 * b1 + a9 * b0; + s10 = c10 + a0 * b10 + a1 * b9 + a2 * b8 + a3 * b7 + a4 * b6 + a5 * b5 + a6 * b4 + a7 * b3 + + a8 * b2 + a9 * b1 + a10 * b0; + s11 = c11 + a0 * b11 + a1 * b10 + a2 * b9 + a3 * b8 + a4 * b7 + a5 * b6 + a6 * b5 + a7 * b4 + + a8 * b3 + a9 * b2 + a10 * b1 + a11 * b0; + s12 = a1 * b11 + a2 * b10 + a3 * b9 + a4 * b8 + a5 * b7 + a6 * b6 + a7 * b5 + a8 * b4 + a9 * b3 + + a10 * b2 + a11 * b1; + s13 = a2 * b11 + a3 * b10 + a4 * b9 + a5 * b8 + a6 * b7 + a7 * b6 + a8 * b5 + a9 * b4 + a10 * b3 + + a11 * b2; + s14 = a3 * b11 + a4 * b10 + a5 * b9 + a6 * b8 + a7 * b7 + a8 * b6 + a9 * b5 + a10 * b4 + + a11 * b3; + s15 = a4 * b11 + a5 * b10 + a6 * b9 + a7 * b8 + a8 * b7 + a9 * b6 + a10 * b5 + a11 * b4; + s16 = a5 * b11 + a6 * b10 + a7 * b9 + a8 * b8 + a9 * b7 + a10 * b6 + a11 * b5; + s17 = a6 * b11 + a7 * b10 + a8 * b9 + a9 * b8 + a10 * b7 + a11 * b6; + s18 = a7 * b11 + a8 * b10 + a9 * b9 + a10 * b8 + a11 * b7; + s19 = a8 * b11 + a9 * b10 + a10 * b9 + a11 * b8; + s20 = a9 * b11 + a10 * b10 + a11 * b9; + s21 = a10 * b11 + a11 * b10; + s22 = a11 * b11; + s23 = 0; + + carry0 = (s0 + (1 << 20)) >> 21; + s1 += carry0; + s0 -= carry0 << 21; + carry2 = (s2 + (1 << 20)) >> 21; + s3 += carry2; + s2 -= carry2 << 21; + carry4 = (s4 + (1 << 20)) >> 21; + s5 += carry4; + s4 -= carry4 << 21; + carry6 = (s6 + (1 << 20)) >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry8 = (s8 + (1 << 20)) >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry10 = (s10 + (1 << 20)) >> 21; + s11 += carry10; + s10 -= carry10 << 21; + carry12 = (s12 + (1 << 20)) >> 21; + s13 += carry12; + s12 -= carry12 << 21; + carry14 = (s14 + (1 << 20)) >> 21; + s15 += carry14; + s14 -= carry14 << 21; + carry16 = (s16 + (1 << 20)) >> 21; + s17 += carry16; + s16 -= carry16 << 21; + carry18 = (s18 + (1 << 20)) >> 21; + s19 += carry18; + s18 -= carry18 << 21; + carry20 = (s20 + (1 << 20)) >> 21; + s21 += carry20; + s20 -= carry20 << 21; + carry22 = (s22 + (1 << 20)) >> 21; + s23 += carry22; + s22 -= carry22 << 21; + + carry1 = (s1 + (1 << 20)) >> 21; + s2 += carry1; + s1 -= carry1 << 21; + carry3 = (s3 + (1 << 20)) >> 21; + s4 += carry3; + s3 -= carry3 << 21; + carry5 = (s5 + (1 << 20)) >> 21; + s6 += carry5; + s5 -= carry5 << 21; + carry7 = (s7 + (1 << 20)) >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry9 = (s9 + (1 << 20)) >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry11 = (s11 + (1 << 20)) >> 21; + s12 += carry11; + s11 -= carry11 << 21; + carry13 = (s13 + (1 << 20)) >> 21; + s14 += carry13; + s13 -= carry13 << 21; + carry15 = (s15 + (1 << 20)) >> 21; + s16 += carry15; + s15 -= carry15 << 21; + carry17 = (s17 + (1 << 20)) >> 21; + s18 += carry17; + s17 -= carry17 << 21; + carry19 = (s19 + (1 << 20)) >> 21; + s20 += carry19; + s19 -= carry19 << 21; + carry21 = (s21 + (1 << 20)) >> 21; + s22 += carry21; + s21 -= carry21 << 21; + + s11 += s23 * 666643; + s12 += s23 * 470296; + s13 += s23 * 654183; + s14 -= s23 * 997805; + s15 += s23 * 136657; + s16 -= s23 * 683901; + // s23 = 0; + + s10 += s22 * 666643; + s11 += s22 * 470296; + s12 += s22 * 654183; + s13 -= s22 * 997805; + s14 += s22 * 136657; + s15 -= s22 * 683901; + // s22 = 0; + + s9 += s21 * 666643; + s10 += s21 * 470296; + s11 += s21 * 654183; + s12 -= s21 * 997805; + s13 += s21 * 136657; + s14 -= s21 * 683901; + // s21 = 0; + + s8 += s20 * 666643; + s9 += s20 * 470296; + s10 += s20 * 654183; + s11 -= s20 * 997805; + s12 += s20 * 136657; + s13 -= s20 * 683901; + // s20 = 0; + + s7 += s19 * 666643; + s8 += s19 * 470296; + s9 += s19 * 654183; + s10 -= s19 * 997805; + s11 += s19 * 136657; + s12 -= s19 * 683901; + // s19 = 0; + + s6 += s18 * 666643; + s7 += s18 * 470296; + s8 += s18 * 654183; + s9 -= s18 * 997805; + s10 += s18 * 136657; + s11 -= s18 * 683901; + // s18 = 0; + + carry6 = (s6 + (1 << 20)) >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry8 = (s8 + (1 << 20)) >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry10 = (s10 + (1 << 20)) >> 21; + s11 += carry10; + s10 -= carry10 << 21; + carry12 = (s12 + (1 << 20)) >> 21; + s13 += carry12; + s12 -= carry12 << 21; + carry14 = (s14 + (1 << 20)) >> 21; + s15 += carry14; + s14 -= carry14 << 21; + carry16 = (s16 + (1 << 20)) >> 21; + s17 += carry16; + s16 -= carry16 << 21; + + carry7 = (s7 + (1 << 20)) >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry9 = (s9 + (1 << 20)) >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry11 = (s11 + (1 << 20)) >> 21; + s12 += carry11; + s11 -= carry11 << 21; + carry13 = (s13 + (1 << 20)) >> 21; + s14 += carry13; + s13 -= carry13 << 21; + carry15 = (s15 + (1 << 20)) >> 21; + s16 += carry15; + s15 -= carry15 << 21; + + s5 += s17 * 666643; + s6 += s17 * 470296; + s7 += s17 * 654183; + s8 -= s17 * 997805; + s9 += s17 * 136657; + s10 -= s17 * 683901; + // s17 = 0; + + s4 += s16 * 666643; + s5 += s16 * 470296; + s6 += s16 * 654183; + s7 -= s16 * 997805; + s8 += s16 * 136657; + s9 -= s16 * 683901; + // s16 = 0; + + s3 += s15 * 666643; + s4 += s15 * 470296; + s5 += s15 * 654183; + s6 -= s15 * 997805; + s7 += s15 * 136657; + s8 -= s15 * 683901; + // s15 = 0; + + s2 += s14 * 666643; + s3 += s14 * 470296; + s4 += s14 * 654183; + s5 -= s14 * 997805; + s6 += s14 * 136657; + s7 -= s14 * 683901; + // s14 = 0; + + s1 += s13 * 666643; + s2 += s13 * 470296; + s3 += s13 * 654183; + s4 -= s13 * 997805; + s5 += s13 * 136657; + s6 -= s13 * 683901; + // s13 = 0; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = (s0 + (1 << 20)) >> 21; + s1 += carry0; + s0 -= carry0 << 21; + carry2 = (s2 + (1 << 20)) >> 21; + s3 += carry2; + s2 -= carry2 << 21; + carry4 = (s4 + (1 << 20)) >> 21; + s5 += carry4; + s4 -= carry4 << 21; + carry6 = (s6 + (1 << 20)) >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry8 = (s8 + (1 << 20)) >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry10 = (s10 + (1 << 20)) >> 21; + s11 += carry10; + s10 -= carry10 << 21; + + carry1 = (s1 + (1 << 20)) >> 21; + s2 += carry1; + s1 -= carry1 << 21; + carry3 = (s3 + (1 << 20)) >> 21; + s4 += carry3; + s3 -= carry3 << 21; + carry5 = (s5 + (1 << 20)) >> 21; + s6 += carry5; + s5 -= carry5 << 21; + carry7 = (s7 + (1 << 20)) >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry9 = (s9 + (1 << 20)) >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry11 = (s11 + (1 << 20)) >> 21; + s12 += carry11; + s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + s12 = 0; + + carry0 = s0 >> 21; + s1 += carry0; + s0 -= carry0 << 21; + carry1 = s1 >> 21; + s2 += carry1; + s1 -= carry1 << 21; + carry2 = s2 >> 21; + s3 += carry2; + s2 -= carry2 << 21; + carry3 = s3 >> 21; + s4 += carry3; + s3 -= carry3 << 21; + carry4 = s4 >> 21; + s5 += carry4; + s4 -= carry4 << 21; + carry5 = s5 >> 21; + s6 += carry5; + s5 -= carry5 << 21; + carry6 = s6 >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry7 = s7 >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry8 = s8 >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry9 = s9 >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry10 = s10 >> 21; + s11 += carry10; + s10 -= carry10 << 21; + carry11 = s11 >> 21; + s12 += carry11; + s11 -= carry11 << 21; + + s0 += s12 * 666643; + s1 += s12 * 470296; + s2 += s12 * 654183; + s3 -= s12 * 997805; + s4 += s12 * 136657; + s5 -= s12 * 683901; + // s12 = 0; + + carry0 = s0 >> 21; + s1 += carry0; + s0 -= carry0 << 21; + carry1 = s1 >> 21; + s2 += carry1; + s1 -= carry1 << 21; + carry2 = s2 >> 21; + s3 += carry2; + s2 -= carry2 << 21; + carry3 = s3 >> 21; + s4 += carry3; + s3 -= carry3 << 21; + carry4 = s4 >> 21; + s5 += carry4; + s4 -= carry4 << 21; + carry5 = s5 >> 21; + s6 += carry5; + s5 -= carry5 << 21; + carry6 = s6 >> 21; + s7 += carry6; + s6 -= carry6 << 21; + carry7 = s7 >> 21; + s8 += carry7; + s7 -= carry7 << 21; + carry8 = s8 >> 21; + s9 += carry8; + s8 -= carry8 << 21; + carry9 = s9 >> 21; + s10 += carry9; + s9 -= carry9 << 21; + carry10 = s10 >> 21; + s11 += carry10; + s10 -= carry10 << 21; + + s[0] = (byte) s0; + s[1] = (byte) (s0 >> 8); + s[2] = (byte) ((s0 >> 16) | (s1 << 5)); + s[3] = (byte) (s1 >> 3); + s[4] = (byte) (s1 >> 11); + s[5] = (byte) ((s1 >> 19) | (s2 << 2)); + s[6] = (byte) (s2 >> 6); + s[7] = (byte) ((s2 >> 14) | (s3 << 7)); + s[8] = (byte) (s3 >> 1); + s[9] = (byte) (s3 >> 9); + s[10] = (byte) ((s3 >> 17) | (s4 << 4)); + s[11] = (byte) (s4 >> 4); + s[12] = (byte) (s4 >> 12); + s[13] = (byte) ((s4 >> 20) | (s5 << 1)); + s[14] = (byte) (s5 >> 7); + s[15] = (byte) ((s5 >> 15) | (s6 << 6)); + s[16] = (byte) (s6 >> 2); + s[17] = (byte) (s6 >> 10); + s[18] = (byte) ((s6 >> 18) | (s7 << 3)); + s[19] = (byte) (s7 >> 5); + s[20] = (byte) (s7 >> 13); + s[21] = (byte) s8; + s[22] = (byte) (s8 >> 8); + s[23] = (byte) ((s8 >> 16) | (s9 << 5)); + s[24] = (byte) (s9 >> 3); + s[25] = (byte) (s9 >> 11); + s[26] = (byte) ((s9 >> 19) | (s10 << 2)); + s[27] = (byte) (s10 >> 6); + s[28] = (byte) ((s10 >> 14) | (s11 << 7)); + s[29] = (byte) (s11 >> 1); + s[30] = (byte) (s11 >> 9); + s[31] = (byte) (s11 >> 17); + } + + // The order of the generator as unsigned bytes in little endian order. + // (2^252 + 0x14def9dea2f79cd65812631a5cf5d3ed, cf. RFC 7748) + private static final byte[] GROUP_ORDER = { + (byte) 0xed, (byte) 0xd3, (byte) 0xf5, (byte) 0x5c, + (byte) 0x1a, (byte) 0x63, (byte) 0x12, (byte) 0x58, + (byte) 0xd6, (byte) 0x9c, (byte) 0xf7, (byte) 0xa2, + (byte) 0xde, (byte) 0xf9, (byte) 0xde, (byte) 0x14, + (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, + (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, + (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00, + (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x10}; + + // Checks whether s represents an integer smaller than the order of the group. + // This is needed to ensure that EdDSA signatures are non-malleable, as failing to check + // the range of S allows to modify signatures (cf. RFC 8032, Section 5.2.7 and Section 8.4.) + // @param s an integer in little-endian order. + private static boolean isSmallerThanGroupOrder(byte[] s) { + for (int j = Field25519.FIELD_LEN - 1; j >= 0; j--) { + // compare unsigned bytes + int a = s[j] & 0xff; + int b = GROUP_ORDER[j] & 0xff; + if (a != b) { + return a < b; + } + } + return false; + } + + /** + * Returns true if the EdDSA {@code signature} with {@code message}, can be verified with + * {@code publicKey}. + */ + public static boolean verify(final byte[] message, final byte[] signature, + final byte[] publicKey) { + try { + if (signature.length != SIGNATURE_LEN) { + return false; + } + if (publicKey.length != PUBLIC_KEY_LEN) { + return false; + } + byte[] s = Arrays.copyOfRange(signature, Field25519.FIELD_LEN, SIGNATURE_LEN); + if (!isSmallerThanGroupOrder(s)) { + return false; + } + MessageDigest digest = MessageDigest.getInstance("SHA-512"); + digest.update(signature, 0, Field25519.FIELD_LEN); + digest.update(publicKey); + digest.update(message); + byte[] h = digest.digest(); + reduce(h); + + XYZT negPublicKey = XYZT.fromBytesNegateVarTime(publicKey); + XYZ xyz = doubleScalarMultVarTime(h, negPublicKey, s); + byte[] expectedR = xyz.toBytes(); + for (int i = 0; i < Field25519.FIELD_LEN; i++) { + if (expectedR[i] != signature[i]) { + return false; + } + } + return true; + } catch (final GeneralSecurityException ignored) { + return false; + } + } +} diff --git a/ui/src/main/java/com/wireguard/android/updater/SnackbarUpdateShower.kt b/ui/src/main/java/com/wireguard/android/updater/SnackbarUpdateShower.kt new file mode 100644 index 00000000..f7d32abb --- /dev/null +++ b/ui/src/main/java/com/wireguard/android/updater/SnackbarUpdateShower.kt @@ -0,0 +1,156 @@ +/* + * Copyright © 2017-2023 WireGuard LLC. All Rights Reserved. + * SPDX-License-Identifier: Apache-2.0 + */ + +package com.wireguard.android.updater + +import android.view.View +import androidx.activity.result.contract.ActivityResultContracts +import androidx.fragment.app.FragmentActivity +import androidx.lifecycle.lifecycleScope +import com.google.android.material.snackbar.BaseTransientBottomBar +import com.google.android.material.snackbar.Snackbar +import com.wireguard.android.R +import com.wireguard.android.util.ErrorMessages +import com.wireguard.android.util.QuantityFormatter +import kotlinx.coroutines.delay +import kotlinx.coroutines.flow.launchIn +import kotlinx.coroutines.flow.onEach +import kotlinx.coroutines.launch +import kotlin.time.Duration.Companion.seconds + +object SnackbarUpdateShower { + private class SwapableSnackbar(activity: FragmentActivity, view: View, anchor: View?) { + val actionSnackbar = makeSnackbar(activity, view, anchor) + val statusSnackbar = makeSnackbar(activity, view, anchor) + var showingAction: Boolean = false + var showingStatus: Boolean = false + + private fun makeSnackbar(activity: FragmentActivity, view: View, anchor: View?): Snackbar { + val snackbar = Snackbar.make(activity, view, "", Snackbar.LENGTH_INDEFINITE) + if (anchor != null) + snackbar.anchorView = anchor + snackbar.setTextMaxLines(6) + snackbar.behavior = object : BaseTransientBottomBar.Behavior() { + override fun canSwipeDismissView(child: View): Boolean { + return false + } + } + snackbar.addCallback(object : BaseTransientBottomBar.BaseCallback<Snackbar>() { + override fun onDismissed(snackbar: Snackbar?, @DismissEvent event: Int) { + super.onDismissed(snackbar, event) + if (event == DISMISS_EVENT_MANUAL || event == DISMISS_EVENT_ACTION || + (snackbar == actionSnackbar && !showingAction) || + (snackbar == statusSnackbar && !showingStatus) + ) + return + activity.lifecycleScope.launch { + delay(5.seconds) + snackbar?.show() + } + } + }) + return snackbar + } + + fun showAction(text: String, action: String, listener: View.OnClickListener) { + if (showingStatus) { + showingStatus = false + statusSnackbar.dismiss() + } + actionSnackbar.setText(text) + actionSnackbar.setAction(action, listener) + if (!showingAction) { + actionSnackbar.show() + showingAction = true + } + } + + fun showText(text: String) { + if (showingAction) { + showingAction = false + actionSnackbar.dismiss() + } + statusSnackbar.setText(text) + if (!showingStatus) { + statusSnackbar.show() + showingStatus = true + } + } + + fun dismiss() { + actionSnackbar.dismiss() + statusSnackbar.dismiss() + showingAction = false + showingStatus = false + } + } + + fun attachToActivity(activity: FragmentActivity, view: View, anchor: View?) { + val snackbar = SwapableSnackbar(activity, view, anchor) + val context = activity.applicationContext + + var lastUserIntervention: Updater.Progress.NeedsUserIntervention? = null + val intentLauncher = activity.registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { + lastUserIntervention?.markAsDone() + } + + Updater.state.onEach { progress -> + when (progress) { + is Updater.Progress.Complete -> + snackbar.dismiss() + + is Updater.Progress.Available -> + snackbar.showAction( + context.getString(R.string.updater_avalable), + context.getString(R.string.updater_action) + ) { + progress.update() + } + + is Updater.Progress.NeedsUserIntervention -> { + lastUserIntervention = progress + intentLauncher.launch(progress.intent) + } + + is Updater.Progress.Installing -> + snackbar.showText(context.getString(R.string.updater_installing)) + + is Updater.Progress.Rechecking -> + snackbar.showText(context.getString(R.string.updater_rechecking)) + + is Updater.Progress.Downloading -> { + if (progress.bytesTotal != 0UL) { + snackbar.showText( + context.getString( + R.string.updater_download_progress, + QuantityFormatter.formatBytes(progress.bytesDownloaded.toLong()), + QuantityFormatter.formatBytes(progress.bytesTotal.toLong()), + progress.bytesDownloaded.toFloat() * 100.0 / progress.bytesTotal.toFloat() + ) + ) + } else { + snackbar.showText( + context.getString( + R.string.updater_download_progress_nototal, + QuantityFormatter.formatBytes(progress.bytesDownloaded.toLong()) + ) + ) + } + } + + is Updater.Progress.Failure -> { + snackbar.showText( + context.getString( + R.string.updater_failure, + ErrorMessages[progress.error] + ) + ) + delay(5.seconds) + progress.retry() + } + } + }.launchIn(activity.lifecycleScope) + } +}
\ No newline at end of file diff --git a/ui/src/main/java/com/wireguard/android/updater/Updater.kt b/ui/src/main/java/com/wireguard/android/updater/Updater.kt new file mode 100644 index 00000000..d7050090 --- /dev/null +++ b/ui/src/main/java/com/wireguard/android/updater/Updater.kt @@ -0,0 +1,401 @@ +/* + * Copyright © 2017-2023 WireGuard LLC. All Rights Reserved. + * SPDX-License-Identifier: Apache-2.0 + */ +package com.wireguard.android.updater + +import android.app.PendingIntent +import android.content.BroadcastReceiver +import android.content.Context +import android.content.Intent +import android.content.IntentFilter +import android.content.pm.PackageInstaller +import android.os.Build +import android.util.Base64 +import android.util.Log +import androidx.core.content.ContextCompat +import androidx.core.content.IntentCompat +import com.wireguard.android.Application +import com.wireguard.android.BuildConfig +import com.wireguard.android.util.UserKnobs +import kotlinx.coroutines.Dispatchers +import kotlinx.coroutines.delay +import kotlinx.coroutines.flow.MutableStateFlow +import kotlinx.coroutines.flow.asStateFlow +import kotlinx.coroutines.flow.firstOrNull +import kotlinx.coroutines.flow.launchIn +import kotlinx.coroutines.flow.onEach +import kotlinx.coroutines.launch +import kotlinx.coroutines.withContext +import java.io.IOException +import java.net.HttpURLConnection +import java.net.URL +import java.nio.charset.StandardCharsets +import java.security.InvalidKeyException +import java.security.InvalidParameterException +import java.security.MessageDigest +import java.util.UUID +import kotlin.math.max +import kotlin.time.Duration.Companion.minutes +import kotlin.time.Duration.Companion.seconds + +object Updater { + private const val TAG = "WireGuard/Updater" + private const val LATEST_VERSION_URL = "https://download.wireguard.com/android-client/latest.sig" + private const val APK_PATH_URL = "https://download.wireguard.com/android-client/%s" + private const val APK_NAME_PREFIX = BuildConfig.APPLICATION_ID + "-" + private const val APK_NAME_SUFFIX = ".apk" + private const val RELEASE_PUBLIC_KEY_BASE64 = "RWTAzwGRYr3EC9px0Ia3fbttz8WcVN6wrOwWp2delz4el6SI8XmkKSMp" + private val CURRENT_VERSION = BuildConfig.VERSION_NAME.removeSuffix("-debug") + + sealed class Progress { + object Complete : Progress() + class Available(val version: String) : Progress() { + fun update() { + Application.getCoroutineScope().launch { + UserKnobs.setUpdaterNewerVersionConsented(version) + } + } + } + + object Rechecking : Progress() + class Downloading(val bytesDownloaded: ULong, val bytesTotal: ULong) : Progress() + object Installing : Progress() + class NeedsUserIntervention(val intent: Intent, private val id: Int) : Progress() { + + private suspend fun installerActive(): Boolean { + if (mutableState.firstOrNull() != this@NeedsUserIntervention) + return true + try { + if (Application.get().packageManager.packageInstaller.getSessionInfo(id)?.isActive == true) + return true + } catch (_: SecurityException) { + return true + } + return false + } + + fun markAsDone() { + Application.getCoroutineScope().launch { + if (installerActive()) + return@launch + delay(7.seconds) + if (installerActive()) + return@launch + emitProgress(Failure(Exception("Ignored by user"))) + } + } + } + + class Failure(val error: Throwable) : Progress() { + fun retry() { + Application.getCoroutineScope().launch { + downloadAndUpdateWrapErrors() + } + } + } + } + + private val mutableState = MutableStateFlow<Progress>(Progress.Complete) + val state = mutableState.asStateFlow() + + private suspend fun emitProgress(progress: Progress, force: Boolean = false) { + if (force || mutableState.firstOrNull()?.javaClass != progress.javaClass) + mutableState.emit(progress) + } + + private fun versionIsNewer(lhs: String, rhs: String): Boolean { + val lhsParts = lhs.split(".") + val rhsParts = rhs.split(".") + if (lhsParts.isEmpty() || rhsParts.isEmpty()) + throw InvalidParameterException("Version is empty") + + for (i in 0 until max(lhsParts.size, rhsParts.size)) { + val lhsPart = if (i < lhsParts.size) lhsParts[i].toULong() else 0UL + val rhsPart = if (i < rhsParts.size) rhsParts[i].toULong() else 0UL + if (lhsPart == rhsPart) + continue + return lhsPart > rhsPart + } + return false + } + + private fun versionOfFile(name: String): String? { + if (!name.startsWith(APK_NAME_PREFIX) || !name.endsWith(APK_NAME_SUFFIX)) + return null + return name.substring(APK_NAME_PREFIX.length, name.length - APK_NAME_SUFFIX.length) + } + + private fun verifySignedFileList(signifyDigest: String): Map<String, Sha256Digest> { + val publicKeyBytes = Base64.decode(RELEASE_PUBLIC_KEY_BASE64, Base64.DEFAULT) + if (publicKeyBytes == null || publicKeyBytes.size != 32 + 10 || publicKeyBytes[0] != 'E'.code.toByte() || publicKeyBytes[1] != 'd'.code.toByte()) + throw InvalidKeyException("Invalid public key") + val lines = signifyDigest.split("\n", limit = 3) + if (lines.size != 3) + throw InvalidParameterException("Invalid signature format: too few lines") + if (!lines[0].startsWith("untrusted comment: ")) + throw InvalidParameterException("Invalid signature format: missing comment") + val signatureBytes = Base64.decode(lines[1], Base64.DEFAULT) + if (signatureBytes == null || signatureBytes.size != 64 + 10) + throw InvalidParameterException("Invalid signature format: wrong sized or missing signature") + for (i in 0..9) { + if (signatureBytes[i] != publicKeyBytes[i]) + throw InvalidParameterException("Invalid signature format: wrong signer") + } + if (!Ed25519.verify( + lines[2].toByteArray(StandardCharsets.UTF_8), + signatureBytes.sliceArray(10 until 10 + 64), + publicKeyBytes.sliceArray(10 until 10 + 32) + ) + ) + throw SecurityException("Invalid signature") + val hashes: MutableMap<String, Sha256Digest> = HashMap() + for (line in lines[2].split("\n").dropLastWhile { it.isEmpty() }) { + val components = line.split(" ", limit = 2) + if (components.size != 2) + throw InvalidParameterException("Invalid file list format: too few components") + hashes[components[1]] = Sha256Digest(components[0]) + } + return hashes + } + + private class Sha256Digest(hex: String) { + val bytes: ByteArray + + init { + if (hex.length != 64) + throw InvalidParameterException("SHA256 hashes must be 32 bytes long") + bytes = hex.chunked(2).map { it.toInt(16).toByte() }.toByteArray() + } + } + + private fun checkForUpdates(): Pair<String, Sha256Digest> { + val connection = URL(LATEST_VERSION_URL).openConnection() as HttpURLConnection + connection.setRequestProperty("User-Agent", Application.USER_AGENT) + connection.connect() + if (connection.responseCode != HttpURLConnection.HTTP_OK) + throw IOException("File list could not be fetched: ${connection.responseCode}") + var fileListBytes = ByteArray(1024 * 512 /* 512 KiB */) + connection.inputStream.use { + val len = it.read(fileListBytes) + if (len <= 0) + throw IOException("File list is empty") + fileListBytes = fileListBytes.sliceArray(0 until len) + } + val fileList = verifySignedFileList(fileListBytes.decodeToString()) + if (fileList.isEmpty()) + throw InvalidParameterException("File list is empty") + var newestFile: String? = null + var newestVersion: String? = null + var newestFileHash: Sha256Digest? = null + for (file in fileList) { + val fileVersion = versionOfFile(file.key) + try { + if (fileVersion != null && (newestVersion == null || versionIsNewer(fileVersion, newestVersion))) { + newestVersion = fileVersion + newestFile = file.key + newestFileHash = file.value + } + } catch (_: Throwable) { + } + } + if (newestFile == null || newestFileHash == null) + throw InvalidParameterException("File list is empty") + return Pair(newestFile, newestFileHash) + } + + private suspend fun downloadAndUpdate() = withContext(Dispatchers.IO) { + val receiver = InstallReceiver() + val context = Application.get().applicationContext + val pendingIntent = withContext(Dispatchers.Main) { + ContextCompat.registerReceiver( + context, + receiver, + IntentFilter(receiver.sessionId), + ContextCompat.RECEIVER_NOT_EXPORTED + ) + PendingIntent.getBroadcast( + context, + 0, + Intent(receiver.sessionId).setPackage(context.packageName), + PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_MUTABLE + ) + } + + emitProgress(Progress.Rechecking) + val update = checkForUpdates() + val updateVersion = versionOfFile(checkForUpdates().first) ?: throw Exception("No versions returned") + if (!versionIsNewer(updateVersion, CURRENT_VERSION)) { + emitProgress(Progress.Complete) + return@withContext + } + + emitProgress(Progress.Downloading(0UL, 0UL), true) + val connection = URL(APK_PATH_URL.format(update.first)).openConnection() as HttpURLConnection + connection.setRequestProperty("User-Agent", Application.USER_AGENT) + connection.connect() + if (connection.responseCode != HttpURLConnection.HTTP_OK) + throw IOException("Update could not be fetched: ${connection.responseCode}") + + var downloadedByteLen: ULong = 0UL + val totalByteLen = + (if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) connection.contentLengthLong else connection.contentLength).toLong() + .toULong() + val fileBytes = ByteArray(1024 * 32 /* 32 KiB */) + val digest = MessageDigest.getInstance("SHA-256") + emitProgress(Progress.Downloading(downloadedByteLen, totalByteLen), true) + + val installer = context.packageManager.packageInstaller + val params = PackageInstaller.SessionParams(PackageInstaller.SessionParams.MODE_FULL_INSTALL) + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) + params.setRequireUserAction(PackageInstaller.SessionParams.USER_ACTION_NOT_REQUIRED) + params.setAppPackageName(context.packageName) /* Enforces updates; disallows new apps. */ + val session = installer.openSession(installer.createSession(params)) + var sessionFailure = true + try { + val installDest = session.openWrite(receiver.sessionId, 0, -1) + + installDest.use { dest -> + connection.inputStream.use { src -> + while (true) { + val readLen = src.read(fileBytes) + if (readLen <= 0) + break + + digest.update(fileBytes, 0, readLen) + dest.write(fileBytes, 0, readLen) + + downloadedByteLen += readLen.toUInt() + emitProgress(Progress.Downloading(downloadedByteLen, totalByteLen), true) + + if (downloadedByteLen >= 1024UL * 1024UL * 100UL /* 100 MiB */) + throw IOException("File too large") + } + } + } + + emitProgress(Progress.Installing) + if (!digest.digest().contentEquals(update.second.bytes)) + throw SecurityException("Update has invalid hash") + sessionFailure = false + } finally { + if (sessionFailure) { + session.abandon() + session.close() + } + } + session.commit(pendingIntent.intentSender) + session.close() + } + + private suspend fun downloadAndUpdateWrapErrors() { + try { + downloadAndUpdate() + } catch (e: Throwable) { + Log.e(TAG, "Update failure", e) + emitProgress(Progress.Failure(e)) + } + } + + private class InstallReceiver : BroadcastReceiver() { + val sessionId = UUID.randomUUID().toString() + + override fun onReceive(context: Context, intent: Intent) { + if (sessionId != intent.action) + return + + when (val status = + intent.getIntExtra(PackageInstaller.EXTRA_STATUS, PackageInstaller.STATUS_FAILURE_INVALID)) { + PackageInstaller.STATUS_PENDING_USER_ACTION -> { + val id = intent.getIntExtra(PackageInstaller.EXTRA_SESSION_ID, 0) + val userIntervention = IntentCompat.getParcelableExtra(intent, Intent.EXTRA_INTENT, Intent::class.java)!! + Application.getCoroutineScope().launch { + emitProgress(Progress.NeedsUserIntervention(userIntervention, id)) + } + } + + PackageInstaller.STATUS_SUCCESS -> { + Application.getCoroutineScope().launch { + emitProgress(Progress.Complete) + } + context.applicationContext.unregisterReceiver(this) + } + + else -> { + val id = intent.getIntExtra(PackageInstaller.EXTRA_SESSION_ID, 0) + try { + context.applicationContext.packageManager.packageInstaller.abandonSession(id) + } catch (_: SecurityException) { + } + val message = + intent.getStringExtra(PackageInstaller.EXTRA_STATUS_MESSAGE) ?: "Installation error $status" + Application.getCoroutineScope().launch { + val e = Exception(message) + Log.e(TAG, "Update failure", e) + emitProgress(Progress.Failure(e)) + } + context.applicationContext.unregisterReceiver(this) + } + } + } + } + + fun monitorForUpdates() { + if (installerIsGooglePlay()) + return + + Application.getCoroutineScope().launch(Dispatchers.IO) { + if (UserKnobs.updaterNewerVersionSeen.firstOrNull()?.let { versionIsNewer(it, CURRENT_VERSION) } == true) + return@launch + + var waitTime = 15 + while (true) { + try { + val updateVersion = versionOfFile(checkForUpdates().first) ?: throw IllegalStateException("No versions returned") + if (versionIsNewer(updateVersion, CURRENT_VERSION)) { + Log.i(TAG, "Update available: $updateVersion") + UserKnobs.setUpdaterNewerVersionSeen(updateVersion) + return@launch + } + } catch (e: Throwable) { + Log.e(TAG, "Failed to check for updates", e) + } + delay(waitTime.minutes) + waitTime = 45 + } + } + + UserKnobs.updaterNewerVersionSeen.onEach { ver -> + if (ver != null && versionIsNewer( + ver, + CURRENT_VERSION + ) && UserKnobs.updaterNewerVersionConsented.firstOrNull() + ?.let { versionIsNewer(it, CURRENT_VERSION) } != true + ) + emitProgress(Progress.Available(ver)) + }.launchIn(Application.getCoroutineScope()) + + UserKnobs.updaterNewerVersionConsented.onEach { ver -> + if (ver != null && versionIsNewer(ver, CURRENT_VERSION)) + downloadAndUpdateWrapErrors() + }.launchIn(Application.getCoroutineScope()) + } + + fun installer(): String { + val context = Application.get().applicationContext + return try { + val packageName = context.packageName + val pm = context.packageManager + if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) { + pm.getInstallSourceInfo(packageName).installingPackageName ?: "" + } else { + @Suppress("DEPRECATION") + pm.getInstallerPackageName(packageName) ?: "" + } + } catch (_: Throwable) { + "" + } + } + + fun installerIsGooglePlay(): Boolean = installer() == "com.android.vending" +}
\ No newline at end of file diff --git a/ui/src/main/java/com/wireguard/android/util/ErrorMessages.kt b/ui/src/main/java/com/wireguard/android/util/ErrorMessages.kt index 66027d95..8df5eb0d 100644 --- a/ui/src/main/java/com/wireguard/android/util/ErrorMessages.kt +++ b/ui/src/main/java/com/wireguard/android/util/ErrorMessages.kt @@ -114,6 +114,8 @@ object ErrorMessages { return resources.getString(R.string.bad_config_explanation_udp_port) } else if (bce.location == BadConfigException.Location.MTU) { return resources.getString(R.string.bad_config_explanation_positive_number) + } else if (bce.location == BadConfigException.Location.HTTP_PROXY) { + return resources.getString(R.string.bad_config_explanation_http_proxy) } else if (bce.location == BadConfigException.Location.PERSISTENT_KEEPALIVE) { return resources.getString(R.string.bad_config_explanation_pka) } diff --git a/ui/src/main/java/com/wireguard/android/util/QuantityFormatter.kt b/ui/src/main/java/com/wireguard/android/util/QuantityFormatter.kt index 974fe530..bc059e1b 100644 --- a/ui/src/main/java/com/wireguard/android/util/QuantityFormatter.kt +++ b/ui/src/main/java/com/wireguard/android/util/QuantityFormatter.kt @@ -5,8 +5,17 @@ package com.wireguard.android.util +import android.icu.text.ListFormatter +import android.icu.text.MeasureFormat +import android.icu.text.RelativeDateTimeFormatter +import android.icu.util.Measure +import android.icu.util.MeasureUnit +import android.os.Build import com.wireguard.android.Application import com.wireguard.android.R +import java.util.Locale +import kotlin.time.Duration.Companion.seconds +import kotlin.time.DurationUnit object QuantityFormatter { fun formatBytes(bytes: Long): String { @@ -19,4 +28,40 @@ object QuantityFormatter { else -> context.getString(R.string.transfer_tibibytes, bytes / (1024.0 * 1024.0 * 1024.0) / 1024.0) } } + + fun formatEpochAgo(epochMillis: Long): String { + var span = (System.currentTimeMillis() - epochMillis) / 1000 + + if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) + return Application.get().applicationContext.getString(R.string.latest_handshake_ago, span.seconds.toString()) + + if (span <= 0L) + return RelativeDateTimeFormatter.getInstance().format(RelativeDateTimeFormatter.Direction.PLAIN, RelativeDateTimeFormatter.AbsoluteUnit.NOW) + val measureFormat = MeasureFormat.getInstance(Locale.getDefault(), MeasureFormat.FormatWidth.WIDE) + val parts = ArrayList<CharSequence>(4) + if (span >= 24 * 60 * 60L) { + val v = span / (24 * 60 * 60L) + parts.add(measureFormat.format(Measure(v, MeasureUnit.DAY))) + span -= v * (24 * 60 * 60L) + } + if (span >= 60 * 60L) { + val v = span / (60 * 60L) + parts.add(measureFormat.format(Measure(v, MeasureUnit.HOUR))) + span -= v * (60 * 60L) + } + if (span >= 60L) { + val v = span / 60L + parts.add(measureFormat.format(Measure(v, MeasureUnit.MINUTE))) + span -= v * 60L + } + if (span > 0L) + parts.add(measureFormat.format(Measure(span, MeasureUnit.SECOND))) + + val joined = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) + parts.joinToString() + else + ListFormatter.getInstance(Locale.getDefault(), ListFormatter.Type.UNITS, ListFormatter.Width.SHORT).format(parts) + + return Application.get().applicationContext.getString(R.string.latest_handshake_ago, joined) + } }
\ No newline at end of file diff --git a/ui/src/main/java/com/wireguard/android/util/UserKnobs.kt b/ui/src/main/java/com/wireguard/android/util/UserKnobs.kt index e0144b63..2c6ca8c3 100644 --- a/ui/src/main/java/com/wireguard/android/util/UserKnobs.kt +++ b/ui/src/main/java/com/wireguard/android/util/UserKnobs.kt @@ -88,4 +88,34 @@ object UserKnobs { it[RUNNING_TUNNELS] = runningTunnels } } + + private val UPDATER_NEWER_VERSION_SEEN = stringPreferencesKey("updater_newer_version_seen") + val updaterNewerVersionSeen: Flow<String?> + get() = Application.getPreferencesDataStore().data.map { + it[UPDATER_NEWER_VERSION_SEEN] + } + + suspend fun setUpdaterNewerVersionSeen(newerVersionSeen: String?) { + Application.getPreferencesDataStore().edit { + if (newerVersionSeen == null) + it.remove(UPDATER_NEWER_VERSION_SEEN) + else + it[UPDATER_NEWER_VERSION_SEEN] = newerVersionSeen + } + } + + private val UPDATER_NEWER_VERSION_CONSENTED = stringPreferencesKey("updater_newer_version_consented") + val updaterNewerVersionConsented: Flow<String?> + get() = Application.getPreferencesDataStore().data.map { + it[UPDATER_NEWER_VERSION_CONSENTED] + } + + suspend fun setUpdaterNewerVersionConsented(newerVersionConsented: String?) { + Application.getPreferencesDataStore().edit { + if (newerVersionConsented == null) + it.remove(UPDATER_NEWER_VERSION_CONSENTED) + else + it[UPDATER_NEWER_VERSION_CONSENTED] = newerVersionConsented + } + } } diff --git a/ui/src/main/java/com/wireguard/android/viewmodel/ConfigDetail.kt b/ui/src/main/java/com/wireguard/android/viewmodel/ConfigDetail.kt new file mode 100644 index 00000000..af95a86a --- /dev/null +++ b/ui/src/main/java/com/wireguard/android/viewmodel/ConfigDetail.kt @@ -0,0 +1,22 @@ +package com.wireguard.android.viewmodel + +import androidx.databinding.ObservableArrayList +import androidx.databinding.ObservableList + +import com.wireguard.config.Config + +class ConfigDetail { + val config: Config? + val peers: ObservableList<PeerDetail> = ObservableArrayList() + + constructor(other: Config?) { + config = other + if (other != null) { + other.peers.forEach { + val detail = PeerDetail(it) + peers.add(detail) + detail.bind(this) + } + } + } +} diff --git a/ui/src/main/java/com/wireguard/android/viewmodel/InterfaceProxy.kt b/ui/src/main/java/com/wireguard/android/viewmodel/InterfaceProxy.kt index 004ebed1..16c3e6a3 100644 --- a/ui/src/main/java/com/wireguard/android/viewmodel/InterfaceProxy.kt +++ b/ui/src/main/java/com/wireguard/android/viewmodel/InterfaceProxy.kt @@ -4,6 +4,8 @@ */ package com.wireguard.android.viewmodel +import android.net.Uri +import android.os.Build import android.os.Parcel import android.os.Parcelable import androidx.databinding.BaseObservable @@ -18,6 +20,12 @@ import com.wireguard.crypto.Key import com.wireguard.crypto.KeyFormatException import com.wireguard.crypto.KeyPair +object Constants { + const val HTTP_PROXY_NONE = "None" + const val HTTP_PROXY_MANUAL = "Manual" + const val HTTP_PROXY_PAC = "Proxy Auto-Config" +} + class InterfaceProxy : BaseObservable, Parcelable { @get:Bindable val excludedApplications: ObservableList<String> = ObservableArrayList() @@ -54,6 +62,44 @@ class InterfaceProxy : BaseObservable, Parcelable { } @get:Bindable + var httpProxyMenu: String = "" + set(value) { + field = value + notifyPropertyChanged(BR.httpProxyMenu) + notifyPropertyChanged(BR.httpProxyManualVisibility) + notifyPropertyChanged(BR.httpProxyPacVisibility) + } + + @get:Bindable + var httpProxyManualVisibility: Int = 0 + get() = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) android.view.View.GONE else (if (httpProxyMenu == Constants.HTTP_PROXY_MANUAL) android.view.View.VISIBLE else android.view.View.GONE) + + @get:Bindable + var httpProxyHostname: String = "" + set(value) { + field = value + notifyPropertyChanged(BR.httpProxyHostname) + } + + @get:Bindable + var httpProxyPort: String = "" + set(value) { + field = value + notifyPropertyChanged(BR.httpProxyPort) + } + + @get:Bindable + var httpProxyPac: String = "" + set(value) { + field = value + notifyPropertyChanged(BR.httpProxyPac) + } + + @get:Bindable + var httpProxyPacVisibility: Int = 0 + get() = if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) android.view.View.GONE else (if (httpProxyMenu == Constants.HTTP_PROXY_PAC) android.view.View.VISIBLE else android.view.View.GONE) + + @get:Bindable var privateKey: String = "" set(value) { field = value @@ -76,6 +122,10 @@ class InterfaceProxy : BaseObservable, Parcelable { parcel.readStringList(includedApplications) listenPort = parcel.readString() ?: "" mtu = parcel.readString() ?: "" + httpProxyMenu = parcel.readString() ?: "" + httpProxyHostname = parcel.readString() ?: "" + httpProxyPort = parcel.readString() ?: "" + httpProxyPac = parcel.readString() ?: "" privateKey = parcel.readString() ?: "" } @@ -87,6 +137,10 @@ class InterfaceProxy : BaseObservable, Parcelable { includedApplications.addAll(other.includedApplications) listenPort = other.listenPort.map { it.toString() }.orElse("") mtu = other.mtu.map { it.toString() }.orElse("") + httpProxyHostname = other.httpProxy.map { if (it.getHost().startsWith('[') && it.getHost().endsWith(']')) it.getHost().substring(1, it.getHost().length-1) else it.getHost() }.orElse("") + httpProxyPort = other.httpProxy.map { if (it.getPort() <= 0) "8080" else it.getPort().toString() }.orElse("") + httpProxyPac = other.httpProxy.map { it.getPacFileUrl().toString() }.orElse("") + httpProxyMenu = other.httpProxy.map { if (it.getPacFileUrl() != null && it.getPacFileUrl() != Uri.EMPTY) Constants.HTTP_PROXY_PAC else if (it.getHost() != "") Constants.HTTP_PROXY_MANUAL else Constants.HTTP_PROXY_NONE }.orElse(Constants.HTTP_PROXY_NONE) val keyPair = other.keyPair privateKey = keyPair.privateKey.toBase64() } @@ -111,6 +165,20 @@ class InterfaceProxy : BaseObservable, Parcelable { if (includedApplications.isNotEmpty()) builder.includeApplications(includedApplications) if (listenPort.isNotEmpty()) builder.parseListenPort(listenPort) if (mtu.isNotEmpty()) builder.parseMtu(mtu) + if (Constants.HTTP_PROXY_MANUAL.equals(httpProxyMenu) && httpProxyHostname.isNotEmpty()) { + var httpProxy: String + if (httpProxyHostname.contains(":")) { + httpProxy = "[" + httpProxyHostname + "]" + } else { + httpProxy = httpProxyHostname + } + if (httpProxyPort.isNotEmpty()) { + httpProxy += ":" + httpProxyPort; + } + builder.parseHttpProxy(httpProxy) + } else if (Constants.HTTP_PROXY_PAC.equals(httpProxyMenu) && httpProxyPac.isNotEmpty()) { + builder.parseHttpProxy("pac:" + httpProxyPac) + } if (privateKey.isNotEmpty()) builder.parsePrivateKey(privateKey) return builder.build() } @@ -122,6 +190,10 @@ class InterfaceProxy : BaseObservable, Parcelable { dest.writeStringList(includedApplications) dest.writeString(listenPort) dest.writeString(mtu) + dest.writeString(httpProxyMenu) + dest.writeString(httpProxyHostname) + dest.writeString(httpProxyPort) + dest.writeString(httpProxyPac) dest.writeString(privateKey) } diff --git a/ui/src/main/java/com/wireguard/android/viewmodel/PeerDetail.kt b/ui/src/main/java/com/wireguard/android/viewmodel/PeerDetail.kt new file mode 100644 index 00000000..80b32fd5 --- /dev/null +++ b/ui/src/main/java/com/wireguard/android/viewmodel/PeerDetail.kt @@ -0,0 +1,85 @@ +package com.wireguard.android.viewmodel + +import android.util.Log +import androidx.databinding.BaseObservable +import androidx.databinding.Bindable +import androidx.databinding.Observable +import androidx.databinding.ObservableList +import androidx.databinding.ObservableArrayList + +import com.wireguard.android.BR +import com.wireguard.config.InetEndpoint +import com.wireguard.config.InetNetwork +import com.wireguard.config.Peer +import com.wireguard.crypto.Key; + +import java.util.Optional; + +import kotlin.collections.LinkedHashSet + + +class PeerDetail : BaseObservable { + var peer: Peer? + private var owner: ConfigDetail? = null + + @get:Bindable + var publicKey: Key + + @get:Bindable + var allowedIps: ObservableList<InetNetwork> = ObservableArrayList<InetNetwork>() + + @get:Bindable + var endpoint: Optional<InetEndpoint> = Optional.empty() + get() { + if (!field.isEmpty()) { + return field + } else { + return Optional.ofNullable(peer?.endpoint?.get()) + } + } + + set(value) { + Log.i(TAG, "notifyPropertyChanged endpoint " + this + ", " + value) + field = value + notifyPropertyChanged(BR.endpoint) + } + + @get:Bindable + var persistentKeepalive: Optional<Int> = Optional.empty() + + constructor(other: Peer) { + peer = other + publicKey = other.getPublicKey() + allowedIps.addAll(other.getAllowedIps()) + endpoint = other.getEndpoint(); + persistentKeepalive = other.getPersistentKeepalive() + } + + constructor(publicKey: Key) { + peer = null + this.publicKey = publicKey + } + + fun bind(owner: ConfigDetail) { + this.owner = owner + } + + override fun addOnPropertyChangedCallback (callback: Observable.OnPropertyChangedCallback) { + Log.i(TAG, "addOnPropertyChangedCallback " + this + ", " + callback) + super.addOnPropertyChangedCallback(callback) + } + + /** + * Converts the {@code Peer} into a string suitable for debugging purposes. The {@code Peer} is + * identified by its public key and (if known) its endpoint. + * + * @return a concise single-line identifier for the {@code Peer} + */ + override fun toString(): String { + return "(Peer " + publicKey.toBase64() + ")" + } + + companion object { + private const val TAG = "WireGuard/PeerDetail" + } +} diff --git a/ui/src/main/res/layout/http_proxy_menu_item.xml b/ui/src/main/res/layout/http_proxy_menu_item.xml new file mode 100644 index 00000000..8ad5c026 --- /dev/null +++ b/ui/src/main/res/layout/http_proxy_menu_item.xml @@ -0,0 +1,8 @@ +<?xml version="1.0" encoding="utf-8"?> +<TextView xmlns:android="http://schemas.android.com/apk/res/android" + android:layout_width="match_parent" + android:layout_height="wrap_content" + android:padding="16dp" + android:ellipsize="end" + android:maxLines="1" +/> diff --git a/ui/src/main/res/layout/tunnel_detail_fragment.xml b/ui/src/main/res/layout/tunnel_detail_fragment.xml index 3ebe24e8..425b364d 100644 --- a/ui/src/main/res/layout/tunnel_detail_fragment.xml +++ b/ui/src/main/res/layout/tunnel_detail_fragment.xml @@ -5,6 +5,8 @@ <data> + <import type="android.os.Build" /> + <import type="com.wireguard.android.backend.Tunnel.State" /> <import type="com.wireguard.android.util.ClipboardUtils" /> @@ -19,7 +21,7 @@ <variable name="config" - type="com.wireguard.config.Config" /> + type="com.wireguard.android.viewmodel.ConfigDetail" /> </data> <ScrollView @@ -71,7 +73,7 @@ <TextView android:id="@+id/interface_name_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/interface_name_text" @@ -81,7 +83,7 @@ <TextView android:id="@+id/interface_name_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/name" android:nextFocusUp="@id/tunnel_switch" @@ -96,7 +98,7 @@ <TextView android:id="@+id/public_key_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/public_key_text" @@ -106,7 +108,7 @@ <TextView android:id="@+id/public_key_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/public_key" android:ellipsize="end" @@ -116,7 +118,7 @@ android:nextFocusForward="@id/addresses_text" android:onClick="@{ClipboardUtils::copyTextView}" android:singleLine="true" - android:text="@{config.interface.keyPair.publicKey.toBase64}" + android:text="@{config.config.interface.keyPair.publicKey.toBase64}" android:textAppearance="?attr/textAppearanceBodyLarge" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/public_key_label" @@ -124,81 +126,108 @@ <TextView android:id="@+id/addresses_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/addresses_text" android:text="@string/addresses" - android:visibility="@{config.interface.addresses.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{config.config.interface.addresses.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/public_key_text" /> <TextView android:id="@+id/addresses_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/addresses" android:nextFocusUp="@id/public_key_text" + android:nextFocusDown="@id/dynamic_addresses_text" + android:nextFocusForward="@id/dynamic_addresses_text" + android:onClick="@{ClipboardUtils::copyTextView}" + android:text="@{config.config.interface.addresses}" + android:textAppearance="?attr/textAppearanceBodyLarge" + android:visibility="@{config.config.interface.addresses.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@+id/addresses_label" + tools:text="fc00:bbbb:bbbb:bb11::3:368b/128" /> + + <TextView + android:id="@+id/dynamic_addresses_label" + android:layout_width="match_parent" + android:layout_height="wrap_content" + android:layout_marginTop="8dp" + android:labelFor="@+id/dynamic_addresses_text" + android:text="@string/dynamic_addresses" + android:visibility="@{tunnel.dhcp == null ? android.view.View.GONE : android.view.View.VISIBLE}" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@id/addresses_text" /> + + <TextView + android:id="@+id/dynamic_addresses_text" + android:layout_width="match_parent" + android:layout_height="wrap_content" + android:contentDescription="@string/dynamic_addresses" + android:nextFocusUp="@id/addresses_text" android:nextFocusDown="@id/dns_servers_text" android:nextFocusForward="@id/dns_servers_text" android:onClick="@{ClipboardUtils::copyTextView}" - android:text="@{config.interface.addresses}" + android:text="@{tunnel.dhcp.addresses}" android:textAppearance="?attr/textAppearanceBodyLarge" - android:visibility="@{config.interface.addresses.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{tunnel.dhcp == null ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" - app:layout_constraintTop_toBottomOf="@+id/addresses_label" + app:layout_constraintTop_toBottomOf="@+id/dynamic_addresses_label" tools:text="fc00:bbbb:bbbb:bb11::3:368b/128" /> <TextView android:id="@+id/dns_servers_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/dns_servers_text" android:text="@string/dns_servers" - android:visibility="@{config.interface.dnsServers.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{config.config.interface.dnsServers.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" - app:layout_constraintTop_toBottomOf="@id/addresses_text" /> + app:layout_constraintTop_toBottomOf="@id/dynamic_addresses_text" /> <TextView android:id="@+id/dns_servers_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/dns_servers" - android:nextFocusUp="@id/addresses_text" + android:nextFocusUp="@id/dynamic_addresses_text" android:nextFocusDown="@id/dns_search_domains_text" android:nextFocusForward="@id/dns_search_domains_text" android:onClick="@{ClipboardUtils::copyTextView}" - android:text="@{config.interface.dnsServers}" + android:text="@{config.config.interface.dnsServers}" android:textAppearance="?attr/textAppearanceBodyLarge" - android:visibility="@{config.interface.dnsServers.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{config.config.interface.dnsServers.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/dns_servers_label" tools:text="8.8.8.8, 8.8.4.4" /> <TextView android:id="@+id/dns_search_domains_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/dns_search_domain_text" android:text="@string/dns_search_domains" - android:visibility="@{config.interface.dnsSearchDomains.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{config.config.interface.dnsSearchDomains.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/dns_servers_text" /> <TextView android:id="@+id/dns_search_domains_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/dns_search_domains" android:nextFocusUp="@id/dns_servers_text" android:nextFocusDown="@id/listen_port_text" android:nextFocusForward="@id/listen_port_text" android:onClick="@{ClipboardUtils::copyTextView}" - android:text="@{config.interface.dnsSearchDomains}" + android:text="@{config.config.interface.dnsSearchDomains}" android:textAppearance="?attr/textAppearanceBodyLarge" - android:visibility="@{config.interface.dnsSearchDomains.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{config.config.interface.dnsSearchDomains.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/dns_search_domains_label" tools:text="zx2c4.com" /> @@ -210,7 +239,7 @@ android:layout_marginTop="8dp" android:labelFor="@+id/listen_port_text" android:text="@string/listen_port" - android:visibility="@{!config.interface.listenPort.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{!config.config.interface.listenPort.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintEnd_toStartOf="@id/mtu_label" app:layout_constraintHorizontal_weight="0.5" app:layout_constraintStart_toStartOf="parent" @@ -223,12 +252,12 @@ android:contentDescription="@string/listen_port" android:nextFocusRight="@id/mtu_text" android:nextFocusUp="@id/dns_search_domains_text" - android:nextFocusDown="@id/applications_text" + android:nextFocusDown="@id/http_proxy_text" android:nextFocusForward="@id/mtu_text" android:onClick="@{ClipboardUtils::copyTextView}" - android:text="@{config.interface.listenPort}" + android:text="@{config.config.interface.listenPort}" android:textAppearance="?attr/textAppearanceBodyLarge" - android:visibility="@{!config.interface.listenPort.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{!config.config.interface.listenPort.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintEnd_toStartOf="@id/mtu_label" app:layout_constraintHorizontal_weight="0.5" app:layout_constraintStart_toStartOf="parent" @@ -242,7 +271,7 @@ android:layout_marginTop="8dp" android:labelFor="@+id/mtu_text" android:text="@string/mtu" - android:visibility="@{!config.interface.mtu.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{!config.config.interface.mtu.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_weight="0.5" app:layout_constraintLeft_toRightOf="@id/listen_port_label" @@ -256,11 +285,11 @@ android:contentDescription="@string/mtu" android:nextFocusLeft="@id/listen_port_text" android:nextFocusUp="@id/dns_servers_text" - android:nextFocusForward="@id/applications_text" + android:nextFocusForward="@id/http_proxy_text" android:onClick="@{ClipboardUtils::copyTextView}" - android:text="@{config.interface.mtu}" + android:text="@{config.config.interface.mtu}" android:textAppearance="?attr/textAppearanceBodyLarge" - android:visibility="@{!config.interface.mtu.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{!config.config.interface.mtu.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintHorizontal_weight="0.5" app:layout_constraintStart_toEndOf="@id/listen_port_label" @@ -276,28 +305,55 @@ app:constraint_referenced_ids="listen_port_text,mtu_text" /> <TextView + android:id="@+id/http_proxy_label" + android:layout_width="0dp" + android:layout_height="wrap_content" + android:layout_marginTop="8dp" + android:labelFor="@+id/http_proxy_text" + android:text="@string/http_proxy" + android:visibility="@{(Build.VERSION.SDK_INT < Build.VERSION_CODES.Q || !config.config.interface.httpProxy.isPresent()) ? android.view.View.GONE : android.view.View.VISIBLE}" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@+id/listen_port_mtu_barrier" /> + + <TextView + android:id="@+id/http_proxy_text" + android:layout_width="0dp" + android:layout_height="wrap_content" + android:contentDescription="@string/http_proxy" + android:nextFocusUp="@id/listen_port_text" + android:nextFocusDown="@id/applications_text" + android:nextFocusForward="@id/applications_text" + android:onClick="@{ClipboardUtils::copyTextView}" + android:text="@{config.config.interface.httpProxy}" + android:textAppearance="?attr/textAppearanceBodyLarge" + android:visibility="@{(Build.VERSION.SDK_INT < Build.VERSION_CODES.Q || !config.config.interface.httpProxy.isPresent()) ? android.view.View.GONE : android.view.View.VISIBLE}" + app:layout_constraintTop_toBottomOf="@id/http_proxy_label" + app:layout_constraintStart_toStartOf="parent" + tools:text="http://example.com:8888" /> + + <TextView android:id="@+id/applications_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/applications_text" android:text="@string/applications" - android:visibility="@{config.interface.includedApplications.isEmpty() && config.interface.excludedApplications.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{config.config.interface.includedApplications.isEmpty() && config.config.interface.excludedApplications.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" - app:layout_constraintTop_toBottomOf="@+id/listen_port_mtu_barrier" /> + app:layout_constraintTop_toBottomOf="@+id/http_proxy_text" /> <TextView android:id="@+id/applications_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/applications" android:nextFocusUp="@id/mtu_text" android:nextFocusDown="@id/peers_layout" android:nextFocusForward="@id/peers_layout" android:onClick="@{ClipboardUtils::copyTextView}" - android:text="@{config.interface.includedApplications.isEmpty() ? @plurals/n_excluded_applications(config.interface.excludedApplications.size(), config.interface.excludedApplications.size()) : @plurals/n_included_applications(config.interface.includedApplications.size(), config.interface.includedApplications.size())}" + android:text="@{config.config.interface.includedApplications.isEmpty() ? @plurals/n_excluded_applications(config.config.interface.excludedApplications.size(), config.config.interface.excludedApplications.size()) : @plurals/n_included_applications(config.config.interface.includedApplications.size(), config.config.interface.includedApplications.size())}" android:textAppearance="?attr/textAppearanceBodyLarge" - android:visibility="@{config.interface.includedApplications.isEmpty() && config.interface.excludedApplications.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{config.config.interface.includedApplications.isEmpty() && config.config.interface.excludedApplications.isEmpty() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/applications_label" tools:text="8 excluded" /> @@ -311,6 +367,7 @@ android:layout_marginTop="8dp" android:divider="@null" android:orientation="vertical" + app:fragment="@{fragment}" app:items="@{config.peers}" app:layout="@{@layout/tunnel_detail_peer}" app:layout_constraintStart_toStartOf="parent" @@ -318,4 +375,4 @@ tools:ignore="UselessLeaf" /> </androidx.constraintlayout.widget.ConstraintLayout> </ScrollView> -</layout>
\ No newline at end of file +</layout> diff --git a/ui/src/main/res/layout/tunnel_detail_peer.xml b/ui/src/main/res/layout/tunnel_detail_peer.xml index 5aeca08b..89bb85ec 100644 --- a/ui/src/main/res/layout/tunnel_detail_peer.xml +++ b/ui/src/main/res/layout/tunnel_detail_peer.xml @@ -9,7 +9,7 @@ <variable name="item" - type="com.wireguard.config.Peer" /> + type="com.wireguard.android.viewmodel.PeerDetail" /> </data> <com.google.android.material.card.MaterialCardView @@ -23,7 +23,7 @@ <com.google.android.material.textview.MaterialTextView android:id="@+id/peer_title" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/peer" android:textAppearance="?attr/textAppearanceTitleMedium" @@ -32,7 +32,7 @@ <TextView android:id="@+id/public_key_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/public_key_text" @@ -42,7 +42,7 @@ <TextView android:id="@+id/public_key_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/public_key" android:ellipsize="end" @@ -59,18 +59,18 @@ <TextView android:id="@+id/pre_shared_key_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/pre_shared_key_text" android:text="@string/pre_shared_key" - android:visibility="@{!item.preSharedKey.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{!item.peer.preSharedKey.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@id/public_key_text" /> <TextView android:id="@+id/pre_shared_key_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/pre_shared_key" android:ellipsize="end" @@ -81,14 +81,14 @@ android:singleLine="true" android:text="@string/pre_shared_key_enabled" android:textAppearance="?attr/textAppearanceBodyLarge" - android:visibility="@{!item.preSharedKey.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" + android:visibility="@{!item.peer.preSharedKey.isPresent() ? android.view.View.GONE : android.view.View.VISIBLE}" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toBottomOf="@+id/pre_shared_key_label" tools:text="8VyS8W8XeMcBWfKp1GuG3/fZlnUQFkqMNbrdmZtVQIM=" /> <TextView android:id="@+id/allowed_ips_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/allowed_ips_text" @@ -99,7 +99,7 @@ <TextView android:id="@+id/allowed_ips_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/allowed_ips" android:nextFocusUp="@id/pre_shared_key_text" @@ -115,7 +115,7 @@ <TextView android:id="@+id/endpoint_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/endpoint_text" @@ -126,7 +126,7 @@ <TextView android:id="@+id/endpoint_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/endpoint" android:nextFocusUp="@id/allowed_ips_text" @@ -142,7 +142,7 @@ <TextView android:id="@+id/persistent_keepalive_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="8dp" android:labelFor="@+id/persistent_keepalive_text" @@ -153,7 +153,7 @@ <TextView android:id="@+id/persistent_keepalive_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="@string/persistent_keepalive" android:nextFocusUp="@id/endpoint_text" @@ -169,9 +169,9 @@ <TextView android:id="@+id/transfer_label" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" - android:layout_below="@+id/endpoint_text" + android:layout_below="@+id/persistent_keepalive_text" android:layout_marginTop="8dp" android:labelFor="@+id/transfer_text" android:text="@string/transfer" @@ -182,7 +182,7 @@ <TextView android:id="@+id/transfer_text" - android:layout_width="match_parent" + android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/transfer_label" android:contentDescription="@string/transfer" @@ -194,6 +194,34 @@ app:layout_constraintTop_toBottomOf="@+id/transfer_label" tools:text="1024 MB" tools:visibility="visible" /> + + <TextView + android:id="@+id/latest_handshake_label" + android:layout_width="wrap_content" + android:layout_height="wrap_content" + android:layout_below="@+id/transfer_text" + android:layout_marginTop="8dp" + android:labelFor="@+id/latest_handshake_text" + android:text="@string/latest_handshake" + android:visibility="gone" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@+id/transfer_text" + tools:visibility="visible" /> + + <TextView + android:id="@+id/latest_handshake_text" + android:layout_width="wrap_content" + android:layout_height="wrap_content" + android:layout_below="@+id/latest_handshake_label" + android:contentDescription="@string/latest_handshake" + android:nextFocusUp="@id/transfer_text" + android:onClick="@{ClipboardUtils::copyTextView}" + android:textAppearance="?attr/textAppearanceBodyLarge" + android:visibility="gone" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@+id/latest_handshake_label" + tools:text="4 minutes, 27 seconds ago" + tools:visibility="visible" /> </androidx.constraintlayout.widget.ConstraintLayout> </com.google.android.material.card.MaterialCardView> </layout> diff --git a/ui/src/main/res/layout/tunnel_editor_fragment.xml b/ui/src/main/res/layout/tunnel_editor_fragment.xml index 0350486b..42222399 100644 --- a/ui/src/main/res/layout/tunnel_editor_fragment.xml +++ b/ui/src/main/res/layout/tunnel_editor_fragment.xml @@ -5,6 +5,8 @@ <data> + <import type="android.os.Build" /> + <import type="com.wireguard.android.util.ClipboardUtils" /> <import type="com.wireguard.android.widget.KeyInputFilter" /> @@ -210,7 +212,7 @@ android:imeOptions="actionNext" android:inputType="textNoSuggestions|textVisiblePassword" android:nextFocusUp="@id/addresses_label_text" - android:nextFocusDown="@id/set_excluded_applications" + android:nextFocusDown="@id/http_proxy_hostname_text" android:nextFocusForward="@id/mtu_text" android:text="@={config.interface.dnsServers}" /> </com.google.android.material.textfield.TextInputLayout> @@ -235,19 +237,112 @@ android:imeOptions="actionDone" android:inputType="number" android:nextFocusUp="@id/listen_port_text" - android:nextFocusDown="@id/set_excluded_applications" - android:nextFocusForward="@id/set_excluded_applications" + android:nextFocusDown="@id/http_proxy_hostname_text" + android:nextFocusForward="@id/http_proxy_hostname_text" android:text="@={config.interface.mtu}" android:textAlignment="center" /> </com.google.android.material.textfield.TextInputLayout> + <com.google.android.material.textfield.TextInputLayout + android:id="@+id/http_proxy_menu" + style="@style/Widget.Material3.TextInputLayout.OutlinedBox.ExposedDropdownMenu" + android:layout_width="0dp" + android:layout_height="wrap_content" + android:layout_margin="4dp" + android:hint="@string/http_proxy" + app:expandedHintEnabled="false" + app:layout_constraintEnd_toEndOf="parent" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@id/dns_servers_label_layout"> + + <AutoCompleteTextView + android:layout_width="match_parent" + android:layout_height="wrap_content" + android:inputType="none" + android:text="@={config.interface.httpProxyMenu}" + /> + </com.google.android.material.textfield.TextInputLayout> + + <com.google.android.material.textfield.TextInputLayout + android:id="@+id/http_proxy_hostname_label_layout" + android:layout_width="0dp" + android:layout_height="wrap_content" + android:layout_margin="4dp" + android:hint="@string/http_proxy_hostname" + android:visibility="@{config.interface.httpProxyManualVisibility}" + app:layout_constraintEnd_toStartOf="@id/http_proxy_port_label_layout" + app:layout_constraintHorizontal_chainStyle="spread" + app:layout_constraintHorizontal_weight="0.7" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@id/http_proxy_menu"> + + <com.google.android.material.textfield.TextInputEditText + android:id="@+id/http_proxy_hostname_text" + android:layout_width="match_parent" + android:layout_height="wrap_content" + android:imeOptions="actionNext" + android:inputType="textNoSuggestions|textVisiblePassword" + android:nextFocusUp="@id/mtu_text" + android:nextFocusDown="@id/set_excluded_applications" + android:nextFocusForward="@id/http_proxy_port_text" + android:text="@={config.interface.httpProxyHostname}" /> + </com.google.android.material.textfield.TextInputLayout> + + <com.google.android.material.textfield.TextInputLayout + android:id="@+id/http_proxy_port_label_layout" + android:layout_width="0dp" + android:layout_height="wrap_content" + android:layout_margin="4dp" + android:hint="@string/http_proxy_port" + android:visibility="@{config.interface.httpProxyManualVisibility}" + app:expandedHintEnabled="false" + app:layout_constraintEnd_toEndOf="parent" + app:layout_constraintHorizontal_weight="0.3" + app:layout_constraintStart_toEndOf="@id/http_proxy_hostname_label_layout" + app:layout_constraintTop_toBottomOf="@id/http_proxy_menu"> + + <com.google.android.material.textfield.TextInputEditText + android:id="@+id/http_proxy_port_text" + android:layout_width="match_parent" + android:layout_height="wrap_content" + android:imeOptions="actionDone" + android:nextFocusUp="@id/mtu_text" + android:nextFocusDown="@id/http_proxy_pac_label_layout" + android:nextFocusForward="@id/http_proxy_pac_label_layout" + android:text="@={config.interface.httpProxyPort}" + android:textAlignment="center" /> + </com.google.android.material.textfield.TextInputLayout> + + <com.google.android.material.textfield.TextInputLayout + android:id="@+id/http_proxy_pac_label_layout" + android:layout_width="0dp" + android:layout_height="wrap_content" + android:layout_margin="4dp" + android:hint="@string/http_proxy_pac" + android:visibility="@{config.interface.httpProxyPacVisibility}" + app:layout_constraintEnd_toEndOf="parent" + app:layout_constraintStart_toStartOf="parent" + app:layout_constraintTop_toBottomOf="@id/http_proxy_hostname_label_layout"> + + <com.google.android.material.textfield.TextInputEditText + android:id="@+id/http_proxy_pac_text" + android:layout_width="match_parent" + android:layout_height="wrap_content" + android:imeOptions="actionNext" + android:inputType="textNoSuggestions|textVisiblePassword" + android:nextFocusUp="@id/http_proxy_hostname_text" + android:nextFocusDown="@id/set_excluded_applications" + android:nextFocusForward="@id/set_excluded_applications" + android:text="@={config.interface.httpProxyPac}" /> + </com.google.android.material.textfield.TextInputLayout> + <com.google.android.material.button.MaterialButton android:id="@+id/set_excluded_applications" style="@style/Widget.Material3.Button.TextButton" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_margin="4dp" - android:nextFocusUp="@id/dns_servers_text" + android:nextFocusUp="@id/http_proxy_hostname_text" android:nextFocusDown="@id/peers_layout" android:nextFocusForward="@id/peers_layout" android:onClick="@{fragment::onRequestSetExcludedIncludedApplications}" @@ -256,7 +351,7 @@ app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" - app:layout_constraintTop_toBottomOf="@id/mtu_label_layout" + app:layout_constraintTop_toBottomOf="@id/http_proxy_pac_label_layout" app:rippleColor="?attr/colorSecondary" tools:text="4 excluded applications" /> </androidx.constraintlayout.widget.ConstraintLayout> diff --git a/ui/src/main/res/values-ar-rSA/strings.xml b/ui/src/main/res/values-ar-rSA/strings.xml index 755fd117..32bf386f 100644 --- a/ui/src/main/res/values-ar-rSA/strings.xml +++ b/ui/src/main/res/values-ar-rSA/strings.xml @@ -111,6 +111,8 @@ <string name="tv_select_a_storage_drive">تحديد محرك تخزين</string> <string name="tv_no_file_picker">الرجاء تثبيت مدير ملفات لتتمكن من تصفح الملفات</string> <string name="tv_add_tunnel_get_started">أضف نفقاً لتبدأ</string> + <string name="donate_title">♥️ تبرع لمشروع وايرجارد</string> + <string name="donate_summary">كل مساهمة تساعد</string> <string name="disable_config_export_title">تعطيل تصدير التكوين</string> <string name="disable_config_export_description">تعطيل تصدير الإعدادات يجعل المفاتيح الخاصة غير متاحة</string> <string name="dns_servers">خوادم DNS</string> @@ -120,6 +122,7 @@ <string name="error_down">خطأ في فصل النفق:%s</string> <string name="error_fetching_apps">خطأ في جلب قائمة التطبيقات: %s</string> <string name="error_root">الرجاء الحصول على صلاحيات الروت وحاول مرة أخرى</string> + <string name="error_prepare">خطأ في تحضير النفق: %s</string> <string name="error_up">خطأ خلال إنشاء النفق: %s</string> <string name="exclude_private_ips">استبعاد عناوين بروتوكول الإنترنت (IP) الخاصة</string> <string name="generate_new_private_key">توليد مفتاح خاص جديد</string> @@ -215,6 +218,7 @@ <string name="tunnel_create_success">تم إنشاء نفق \"%s\" بنجاح</string> <string name="tunnel_error_already_exists">النفق \"%s\" موجود بالفعل</string> <string name="tunnel_error_invalid_name">إسم غير صالح</string> + <string name="tunnel_list_placeholder">أضف نفق باستخدام الزر أدناه</string> <string name="tunnel_name">إسم النفق</string> <string name="tunnel_on_error">غير قادر على تشغيل النفق (wgTurnOn أعاد %d)</string> <string name="tunnel_dns_failure">غير قادر على حل اسم مضيف نظام أسماء النطاقات (DNS hostname): \"%s\"</string> diff --git a/ui/src/main/res/values-da-rDK/strings.xml b/ui/src/main/res/values-da-rDK/strings.xml index 371c23fe..98f8de6e 100644 --- a/ui/src/main/res/values-da-rDK/strings.xml +++ b/ui/src/main/res/values-da-rDK/strings.xml @@ -72,6 +72,8 @@ <string name="config_file_exists_error">Konfigurationsfilen \"%s\" findes allerede</string> <string name="config_not_found_error">Konfigurationsfilen \"%s\" blev ikke fundet</string> <string name="config_rename_error">Kan ikke omdøbe konfigurationsfilen \"%s\"</string> + <string name="config_save_error">Kan ikke gemme konfigurationen for \"%1$s\": %2$s</string> + <string name="config_save_success">Konfiguration for \"%s\" blev gemt</string> <string name="create_activity_title">Opret WireGuard tunnel</string> <string name="create_empty">Opret fra ny</string> <string name="create_from_file">Importér fra fil eller arkiv</string> @@ -88,6 +90,7 @@ <string name="dns_search_domains">DNS-søgedomæner</string> <string name="edit">Redigér</string> <string name="endpoint">Slutpunkt</string> + <string name="error_prepare">Fejl ved forberedelse af tunnel: %s</string> <string name="error_up">Fejl under aktivering af tunnel: %s</string> <string name="exclude_private_ips">Eksludér private IP-adresser</string> <string name="generate_new_private_key">Generér ny privat nøgle</string> @@ -152,6 +155,7 @@ <string name="tunnel_create_success">Tunnelen blev succesfuldt oprettet \"%s\"</string> <string name="tunnel_error_already_exists">Tunnel \"%s\" eksisterer allerede</string> <string name="tunnel_error_invalid_name">Ugyldigt navn</string> + <string name="tunnel_list_placeholder">Tilføj en tunnel ved hjælp af knappen nedenfor</string> <string name="tunnel_name">Tunnel Navn</string> <string name="tunnel_dns_failure">Kunne ikke opslå DNS adresse: \"%s\"</string> <string name="tunnel_rename_error">Kan ikke omdøbe tunnel: %s</string> diff --git a/ui/src/main/res/values-no-rNO/strings.xml b/ui/src/main/res/values-no-rNO/strings.xml index 8596017e..ca51975e 100644 --- a/ui/src/main/res/values-no-rNO/strings.xml +++ b/ui/src/main/res/values-no-rNO/strings.xml @@ -21,7 +21,7 @@ <item quantity="other">Importerte %d tunneler</item> </plurals> <plurals name="set_excluded_applications"> - <item quantity="one">%d ekskludert program</item> + <item quantity="one">%d ekskludert app</item> <item quantity="other">%d ekskluderte apper</item> </plurals> <plurals name="set_included_applications"> @@ -79,6 +79,8 @@ <string name="bad_config_reason_unknown_section">Ukjent seksjon</string> <string name="bad_config_reason_value_out_of_range">Verdien er utenfor gyldig område</string> <string name="bad_extension_error">Filen må være .conf eller .zip</string> + <string name="error_no_qr_found">Ingen QR-kode funnet i bildet</string> + <string name="error_qr_checksum">Feil ved sjekksumverifisering av QR-kode</string> <string name="cancel">Avbryt</string> <string name="config_delete_error">Kan ikke slette konfigurasjonsfilen %s</string> <string name="config_exists_error">Konfigurasjon for «%s» finnes allerede</string> @@ -105,14 +107,19 @@ <string name="tv_select_a_storage_drive">Velg en lagringsenhet</string> <string name="tv_no_file_picker">Vennligst installer et filhåndteringsverktøy for å bla i filer</string> <string name="tv_add_tunnel_get_started">Opprett en ny tunnel for å komme i gang</string> + <string name="donate_title">♥ Donér til WireGuard-prosjektet</string> + <string name="donate_summary">Hvert bidrag hjelper</string> + <string name="donate_google_play_disappointment">Takk for at du støtter WireGuard-prosjektet!\n\nPå grunn av Googles retningslinjer, kan vi dessverre ikke linke til den delen av prosjektets nettside der du kan donere. Forhåpentligvis klarer du å finne denne selv!\n\nVi takker igjen for ditt bidrag.</string> <string name="disable_config_export_title">Deaktiver eksport av konfigurasjon</string> <string name="disable_config_export_description">Deaktivering av konfigurasjonseksport gjør private nøkler mindre tilgjengelig</string> <string name="dns_servers">DNS tjenere</string> + <string name="dns_search_domains">Søk gjennom domener</string> <string name="edit">Rediger</string> <string name="endpoint">Endepunkt</string> <string name="error_down">Feil når tunnel skulle tas ned: %s</string> <string name="error_fetching_apps">Feil ved henting av applikasjonsliste: %s</string> <string name="error_root">Vennligst få root-tilgang og prøv igjen</string> + <string name="error_prepare">Feil ved klargjøring av tunnel: %s</string> <string name="error_up">Feil når tunnel skulle tas opp: %s</string> <string name="exclude_private_ips">Utelukk private IP-adresser</string> <string name="generate_new_private_key">Lag ny privat nøkkel</string> @@ -210,13 +217,16 @@ <string name="tunnel_create_success">Opprettet tunnelen «%s»</string> <string name="tunnel_error_already_exists">Tunnel «%s» finnes allerede</string> <string name="tunnel_error_invalid_name">Ugyldig navn</string> + <string name="tunnel_list_placeholder">Legg til en tunnel ved å bruke knappen under</string> <string name="tunnel_name">Tunnelnavn</string> <string name="tunnel_on_error">Kan ikke slå på tunnel (wgTurnOn returnerte %d)</string> + <string name="tunnel_dns_failure">Kan ikke slå opp DNS-vertsnavn: “%s\"</string> <string name="tunnel_rename_error">Kan ikke endre navn på tunnel: %s</string> <string name="tunnel_rename_success">Endret navn på tunnelen til «%s»</string> <string name="type_name_go_userspace">Bruk userspace</string> <string name="type_name_kernel_module">Kjernemodul</string> <string name="unknown_error">Ukjent feil</string> + <string name="version_summary">%1$s backend %2$s</string> <string name="version_summary_checking">Sjekker %s backend versjon</string> <string name="version_summary_unknown">Ukjent %s versjon</string> <string name="version_title">WireGuard for Android v%s</string> diff --git a/ui/src/main/res/values-ru/strings.xml b/ui/src/main/res/values-ru/strings.xml index ba7d4557..fd747768 100644 --- a/ui/src/main/res/values-ru/strings.xml +++ b/ui/src/main/res/values-ru/strings.xml @@ -133,6 +133,9 @@ <string name="tv_select_a_storage_drive">Выберите накопитель</string> <string name="tv_no_file_picker">Пожалуйста, установите утилиту управления файлами для их просмотра</string> <string name="tv_add_tunnel_get_started">Добавьте туннель, чтобы начать</string> + <string name="donate_title">♥ Пожертвовать проекту WireGuard</string> + <string name="donate_summary">Каждое пожертвование помогает</string> + <string name="donate_google_play_disappointment">Спасибо за поддержку проекта WireGuard!\n\nК сожалению, из-за политики Google, нельзя размещать ссылку на тот раздел сайта проекта, где можно сделать пожертвование. Надеемся, вы сможете разобраться самостоятельно!\n\nЕщё раз спасибо за ваш вклад.</string> <string name="disable_config_export_title">Отключить экспорт конфигурации</string> <string name="disable_config_export_description">Отключение экспорта конфигурации делает приватные ключи менее доступными</string> <string name="dns_servers">DNS-серверы</string> @@ -142,6 +145,7 @@ <string name="error_down">Ошибка при выходе из туннеля: %s</string> <string name="error_fetching_apps">Ошибка при получении списка приложений: %s</string> <string name="error_root">Пожалуйста, получите root-доступ и попробуйте снова</string> + <string name="error_prepare">Ошибка при подготовке туннеля: %s</string> <string name="error_up">Ошибка при запуске туннеля: %s</string> <string name="exclude_private_ips">Исключить частные IP-адреса</string> <string name="generate_new_private_key">Сгенерировать новый приватный ключ</string> @@ -161,6 +165,8 @@ <string name="key_length_explanation_base64">: ключи WireGuard base64 должны содержать 44 символа (32 байта)</string> <string name="key_length_explanation_binary">: ключи WireGuard должны быть 32 байта</string> <string name="key_length_explanation_hex">: HEX-ключи WireGuard должны содержать 64 символа (32 байта)</string> + <string name="latest_handshake">Последнее рукопожатие</string> + <string name="latest_handshake_ago">%s назад</string> <string name="listen_port">Порт</string> <string name="log_export_error">Не удалось экспортировать журнал: %s</string> <string name="log_export_subject">Файл журнала WireGuard Android</string> @@ -239,6 +245,7 @@ <string name="tunnel_create_success">Успешно создан туннель “%s”</string> <string name="tunnel_error_already_exists">Туннель “%s” уже существует</string> <string name="tunnel_error_invalid_name">Неправильное имя</string> + <string name="tunnel_list_placeholder">Добавьте туннель с помощью кнопки ниже</string> <string name="tunnel_name">Название туннеля</string> <string name="tunnel_on_error">Не удалось включить туннель (wgTurnOn вернул %d)</string> <string name="tunnel_dns_failure">Не удалось определить DNS имя: “%s”</string> diff --git a/ui/src/main/res/values-zh-rCN/strings.xml b/ui/src/main/res/values-zh-rCN/strings.xml index 88dedc74..4b30afca 100644 --- a/ui/src/main/res/values-zh-rCN/strings.xml +++ b/ui/src/main/res/values-zh-rCN/strings.xml @@ -106,6 +106,7 @@ <string name="error_down">断开连接时出错：%s</string> <string name="error_fetching_apps">获取应用列表时出错：%s</string> <string name="error_root">请获取 root 权限并重试</string> + <string name="error_prepare">准备连接时出错：%s</string> <string name="error_up">建立连接时出错：%s</string> <string name="exclude_private_ips">排除局域网</string> <string name="generate_new_private_key">生成新的私钥</string> @@ -125,6 +126,8 @@ <string name="key_length_explanation_base64">：WireGuard 的 Base64 密钥长度必须为 44 个字符（32 字节）</string> <string name="key_length_explanation_binary">：WireGuard 密钥大小必须为 32 字节</string> <string name="key_length_explanation_hex">：WireGuard 的十六进制密钥长度必须为 64 个字符（32 字节）</string> + <string name="latest_handshake">上次握手时间</string> + <string name="latest_handshake_ago">%s之前</string> <string name="listen_port">监听端口</string> <string name="log_export_error">无法导出日志：%s</string> <string name="log_export_subject">WireGuard 日志文件</string> diff --git a/ui/src/main/res/values/dimens.xml b/ui/src/main/res/values/dimens.xml index ddb4deac..8ea07dfb 100644 --- a/ui/src/main/res/values/dimens.xml +++ b/ui/src/main/res/values/dimens.xml @@ -1,7 +1,6 @@ <?xml version="1.0" encoding="utf-8"?> <resources> <dimen name="fab_margin">16dp</dimen> - <dimen name="extra_margin">12dp</dimen> <dimen name="bottom_sheet_item_height">56dp</dimen> <dimen name="normal_margin">8dp</dimen> <dimen name="bottom_sheet_top_padding">8dp</dimen> diff --git a/ui/src/main/res/values/strings.xml b/ui/src/main/res/values/strings.xml index 7710a879..a1364123 100644 --- a/ui/src/main/res/values/strings.xml +++ b/ui/src/main/res/values/strings.xml @@ -70,6 +70,7 @@ <string name="bad_config_explanation_pka">: Must be positive and no more than 65535</string> <string name="bad_config_explanation_positive_number">: Must be positive</string> <string name="bad_config_explanation_udp_port">: Must be a valid UDP port number</string> + <string name="bad_config_explanation_http_proxy">: Must be valid proxy hostname and port</string> <string name="bad_config_reason_invalid_key">Invalid key</string> <string name="bad_config_reason_invalid_number">Invalid number</string> <string name="bad_config_reason_invalid_value">Invalid value</string> @@ -104,6 +105,7 @@ <string name="dark_theme_summary_on">Currently using dark (night) theme</string> <string name="dark_theme_title">Use dark theme</string> <string name="delete">Delete</string> + <string name="dynamic_addresses">Dynamic addresses</string> <string name="tv_delete">Select tunnel to delete</string> <string name="tv_select_a_storage_drive">Select a storage drive</string> <string name="tv_no_file_picker">Please install a file management utility to browse files</string> @@ -130,6 +132,10 @@ <string name="hint_optional">(optional)</string> <string name="hint_optional_discouraged">(optional, not recommended)</string> <string name="hint_random">(random)</string> + <string name="http_proxy">Proxy</string> + <string name="http_proxy_hostname">Proxy hostname</string> + <string name="http_proxy_pac">Proxy Auto-Config URL</string> + <string name="http_proxy_port">Proxy port</string> <string name="illegal_filename_error">Illegal file name “%s”</string> <string name="import_error">Unable to import tunnel: %s</string> <string name="import_from_qr_code">Import Tunnel from QR Code</string> @@ -140,6 +146,8 @@ <string name="key_length_explanation_base64">: WireGuard base64 keys must be 44 characters (32 bytes)</string> <string name="key_length_explanation_binary">: WireGuard keys must be 32 bytes</string> <string name="key_length_explanation_hex">: WireGuard hex keys must be 64 characters (32 bytes)</string> + <string name="latest_handshake">Latest handshake</string> + <string name="latest_handshake_ago">%s ago</string> <string name="listen_port">Listen port</string> <string name="log_export_error">Unable to export log: %s</string> <string name="log_export_subject">WireGuard Android Log File</string> @@ -227,6 +235,13 @@ <string name="type_name_go_userspace">Go userspace</string> <string name="type_name_kernel_module">Kernel module</string> <string name="unknown_error">Unknown error</string> + <string name="updater_avalable">An application update is available. Please update now.</string> + <string name="updater_action">Download & Update</string> + <string name="updater_rechecking">Fetching update metadata…</string> + <string name="updater_download_progress">Downloading update: %1$s / %2$s (%3$.2f%%)</string> + <string name="updater_download_progress_nototal">Downloading update: %s</string> + <string name="updater_installing">Installing update…</string> + <string name="updater_failure">Update failure: %s. Will retry momentarily…</string> <string name="version_summary">%1$s backend %2$s</string> <string name="version_summary_checking">Checking %s backend version</string> <string name="version_summary_unknown">Unknown %s version</string> |