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Code Issues Projects Releases Wiki Activity

Drop support for Android 4

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new minSdk is 21
This commit is contained in:
Torsten Grote
2023-02-10 11:27:26 -03:00
parent c6a284bd6d
commit 6ed55bcd7d
43 changed files with 116 additions and 476 deletions
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13
bramble-android/src/main/java/org/briarproject/bramble/account/AndroidAccountManager.java
View File

@@ -20,7 +20,6 @@ import javax.annotation.Nullable;
import javax.annotation.concurrent.GuardedBy;
import javax.inject.Inject;
import static android.os.Build.VERSION.SDK_INT;
import static java.util.Arrays.asList;
import static java.util.logging.Level.INFO;
import static org.briarproject.bramble.util.IoUtils.deleteFileOrDir;
@@ -105,15 +104,11 @@ class AndroidAccountManager extends AccountManagerImpl
}
files.add(appContext.getFilesDir());
addIfNotNull(files, appContext.getExternalCacheDir());
if (SDK_INT >= 19) {
for (File file : appContext.getExternalCacheDirs()) {
addIfNotNull(files, file);
}
for (File file : appContext.getExternalCacheDirs()) {
addIfNotNull(files, file);
}
if (SDK_INT >= 21) {
for (File file : appContext.getExternalMediaDirs()) {
addIfNotNull(files, file);
}
for (File file : appContext.getExternalMediaDirs()) {
addIfNotNull(files, file);
}
// Clear the cache directory but don't delete it
File cacheDir = appContext.getCacheDir();

5
bramble-android/src/main/java/org/briarproject/bramble/plugin/bluetooth/AndroidBluetoothPlugin.java
View File

@@ -1,5 +1,6 @@
package org.briarproject.bramble.plugin.bluetooth;
import android.annotation.SuppressLint;
import android.app.Application;
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothDevice;
@@ -49,7 +50,6 @@ import static android.bluetooth.BluetoothAdapter.STATE_ON;
import static android.bluetooth.BluetoothDevice.ACTION_FOUND;
import static android.bluetooth.BluetoothDevice.DEVICE_TYPE_LE;
import static android.bluetooth.BluetoothDevice.EXTRA_DEVICE;
import static android.os.Build.VERSION.SDK_INT;
import static java.util.Collections.shuffle;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.logging.Level.INFO;
@@ -60,6 +60,7 @@ import static org.briarproject.bramble.util.PrivacyUtils.scrubMacAddress;
@MethodsNotNullByDefault
@ParametersNotNullByDefault
@SuppressLint("MissingPermission")
class AndroidBluetoothPlugin extends
AbstractBluetoothPlugin<BluetoothSocket, BluetoothServerSocket> {
@@ -253,7 +254,7 @@ class AndroidBluetoothPlugin extends
} else if (ACTION_FOUND.equals(action)) {
BluetoothDevice d = i.getParcelableExtra(EXTRA_DEVICE);
// Ignore Bluetooth LE devices
if (SDK_INT < 18 || d.getType() != DEVICE_TYPE_LE) {
if (d.getType() != DEVICE_TYPE_LE) {
String address = d.getAddress();
if (LOG.isLoggable(INFO))
LOG.info("Discovered " +

8
bramble-android/src/main/java/org/briarproject/bramble/plugin/tcp/AndroidLanTcpPlugin.java
View File

@@ -1,6 +1,5 @@
package org.briarproject.bramble.plugin.tcp;
import android.annotation.TargetApi;
import android.app.Application;
import android.net.ConnectivityManager;
import android.net.LinkAddress;
@@ -37,7 +36,6 @@ import javax.net.SocketFactory;
import static android.content.Context.CONNECTIVITY_SERVICE;
import static android.content.Context.WIFI_SERVICE;
import static android.net.NetworkCapabilities.TRANSPORT_WIFI;
import static android.os.Build.VERSION.SDK_INT;
import static java.util.Collections.emptyList;
import static java.util.Collections.list;
import static java.util.Collections.singletonList;
@@ -118,7 +116,7 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
// If there's no wifi IPv4 address, we might be a client on an
// IPv6-only wifi network. We can only detect this on API 21+
if (wifi == null) {
return SDK_INT >= 21 ? getWifiClientIpv6Address() : null;
return getWifiClientIpv6Address();
}
// Use the wifi IPv4 address to determine which interface's IPv6
// address we should return (if the interface has a suitable address)
@@ -172,7 +170,6 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
* Returns a link-local IPv6 address for the wifi client interface, or null
* if there's no such interface or it doesn't have a suitable address.
*/
@TargetApi(21)
@Nullable
private InetAddress getWifiClientIpv6Address() {
// https://issuetracker.google.com/issues/175055271
@@ -234,7 +231,6 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
// On API 21 and later, a socket that is not created with the wifi
// network's socket factory may try to connect via another network
private SocketFactory getSocketFactory() {
if (SDK_INT < 21) return SocketFactory.getDefault();
// https://issuetracker.google.com/issues/175055271
try {
for (Network net : connectivityManager.getAllNetworks()) {
@@ -302,7 +298,7 @@ class AndroidLanTcpPlugin extends LanTcpPlugin {
Pair<InetAddress, Boolean> wifi = getWifiIpv4Address();
// If there's no wifi IPv4 address, we might be a client on an
// IPv6-only wifi network. We can only detect this on API 21+
if (wifi == null && SDK_INT >= 21) {
if (wifi == null) {
InetAddress ipv6 = getWifiClientIpv6Address();
if (ipv6 != null) return new Pair<>(ipv6, false);
}

23
bramble-android/src/main/java/org/briarproject/bramble/system/AndroidSecureRandomProvider.java
View File

@@ -31,8 +31,6 @@ import static android.provider.Settings.Secure.ANDROID_ID;
@NotNullByDefault
class AndroidSecureRandomProvider extends UnixSecureRandomProvider {
private static final int SEED_LENGTH = 32;
private final Context appContext;
@Inject
@@ -72,27 +70,6 @@ class AndroidSecureRandomProvider extends UnixSecureRandomProvider {
// Silence strict mode
StrictMode.ThreadPolicy tp = StrictMode.allowThreadDiskWrites();
super.writeSeed();
if (SDK_INT <= 18) applyOpenSslFix();
StrictMode.setThreadPolicy(tp);
}
// Based on https://android-developers.googleblog.com/2013/08/some-securerandom-thoughts.html
private void applyOpenSslFix() {
byte[] seed = new UnixSecureRandomSpi().engineGenerateSeed(
SEED_LENGTH);
try {
// Seed the OpenSSL PRNG
Class.forName("org.apache.harmony.xnet.provider.jsse.NativeCrypto")
.getMethod("RAND_seed", byte[].class)
.invoke(null, (Object) seed);
// Mix the output of the Linux PRNG into the OpenSSL PRNG
int bytesRead = (Integer) Class.forName(
"org.apache.harmony.xnet.provider.jsse.NativeCrypto")
.getMethod("RAND_load_file", String.class, long.class)
.invoke(null, "/dev/urandom", 1024);
if (bytesRead != 1024) throw new IOException();
} catch (Exception e) {
throw new SecurityException(e);
}
}
}

27
bramble-android/src/main/java/org/briarproject/bramble/util/AndroidUtils.java
View File

@@ -11,14 +11,10 @@ import org.briarproject.bramble.api.Pair;
import org.briarproject.nullsafety.NotNullByDefault;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Scanner;
import javax.annotation.Nullable;
@@ -29,7 +25,6 @@ import static android.content.pm.PackageManager.PERMISSION_GRANTED;
import static android.os.Build.VERSION.SDK_INT;
import static android.os.Process.myPid;
import static android.os.Process.myUid;
import static java.lang.Runtime.getRuntime;
import static java.util.Arrays.asList;
import static org.briarproject.nullsafety.NullSafety.requireNonNull;
@@ -43,14 +38,7 @@ public class AndroidUtils {
private static final String STORED_LOGCAT = "dev-logcat";
public static Collection<String> getSupportedArchitectures() {
List<String> abis = new ArrayList<>();
if (SDK_INT >= 21) {
abis.addAll(asList(Build.SUPPORTED_ABIS));
} else {
abis.add(Build.CPU_ABI);
if (Build.CPU_ABI2 != null) abis.add(Build.CPU_ABI2);
}
return abis;
return asList(Build.SUPPORTED_ABIS);
}
public static boolean hasBtConnectPermission(Context ctx) {
@@ -136,19 +124,6 @@ public class AndroidUtils {
return new String[] {"image/jpeg", "image/png", "image/gif"};
}
@Nullable
public static String getSystemProperty(String propName) {
try {
Process p = getRuntime().exec("getprop " + propName);
Scanner s = new Scanner(p.getInputStream());
String line = s.nextLine();
s.close();
return line;
} catch (SecurityException | IOException e) {
return null;
}
}
public static boolean isUiThread() {
return Looper.myLooper() == Looper.getMainLooper();
}