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global: Clean up Java

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Address Java and Android lints.

Signed-off-by: Samuel Holland <samuel@sholland.org>
This commit is contained in:
Samuel Holland
2018-04-30 11:50:21 -05:00
parent 8e4fb91a28
commit 843003f436
13 changed files with 237 additions and 215 deletions
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app/src/main/java/com/wireguard/android/backend/GoBackend.java
+29 -26
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@@ -33,11 +33,11 @@ public final class GoBackend implements Backend {
System.loadLibrary("wg-go");
}
private Context context;
private final Context context;
private Tunnel currentTunnel;
private int currentTunnelHandle = -1;
public GoBackend(Context context) {
public GoBackend(final Context context) {
this.context = context;
}
@@ -108,14 +108,14 @@ public final class GoBackend implements Backend {
if (VpnService.prepare(context) != null)
throw new Exception("VPN service not authorized by user");
VpnService service;
final VpnService service;
if (!vpnService.isDone())
startVpnService();
try {
service = vpnService.get(2, TimeUnit.SECONDS);
} catch (TimeoutException e) {
throw new Exception("Unable to start Android VPN service");
} catch (final TimeoutException e) {
throw new Exception("Unable to start Android VPN service", e);
}
if (currentTunnelHandle != -1) {
@@ -124,29 +124,32 @@ public final class GoBackend implements Backend {
}
// Build config
Formatter fmt = new Formatter(new StringBuilder());
final Interface iface = config.getInterface();
fmt.format("replace_peers=true\n");
if (iface.getPrivateKey() != null)
fmt.format("private_key=%s\n", KeyEncoding.keyToHex(KeyEncoding.keyFromBase64(iface.getPrivateKey())));
if (iface.getListenPort() != 0)
fmt.format("listen_port=%d\n", config.getInterface().getListenPort());
for (final Peer peer : config.getPeers()) {
if (peer.getPublicKey() != null)
fmt.format("public_key=%s\n", KeyEncoding.keyToHex(KeyEncoding.keyFromBase64(peer.getPublicKey())));
if (peer.getPreSharedKey() != null)
fmt.format("preshared_key=%s\n", KeyEncoding.keyToHex(KeyEncoding.keyFromBase64(peer.getPreSharedKey())));
if (peer.getEndpoint() != null)
fmt.format("endpoint=%s\n", peer.getResolvedEndpointString());
if (peer.getPersistentKeepalive() != 0)
fmt.format("persistent_keepalive_interval=%d\n", peer.getPersistentKeepalive());
for (final IPCidr addr : peer.getAllowedIPs()) {
fmt.format("allowed_ip=%s\n", addr.toString());
final String goConfig;
try (Formatter fmt = new Formatter(new StringBuilder())) {
fmt.format("replace_peers=true\n");
if (iface.getPrivateKey() != null)
fmt.format("private_key=%s\n", KeyEncoding.keyToHex(KeyEncoding.keyFromBase64(iface.getPrivateKey())));
if (iface.getListenPort() != 0)
fmt.format("listen_port=%d\n", config.getInterface().getListenPort());
for (final Peer peer : config.getPeers()) {
if (peer.getPublicKey() != null)
fmt.format("public_key=%s\n", KeyEncoding.keyToHex(KeyEncoding.keyFromBase64(peer.getPublicKey())));
if (peer.getPreSharedKey() != null)
fmt.format("preshared_key=%s\n", KeyEncoding.keyToHex(KeyEncoding.keyFromBase64(peer.getPreSharedKey())));
if (peer.getEndpoint() != null)
fmt.format("endpoint=%s\n", peer.getResolvedEndpointString());
if (peer.getPersistentKeepalive() != 0)
fmt.format("persistent_keepalive_interval=%d\n", peer.getPersistentKeepalive());
for (final IPCidr addr : peer.getAllowedIPs()) {
fmt.format("allowed_ip=%s\n", addr.toString());
}
}
goConfig = fmt.toString();
}
// Create the vpn tunnel with android API
VpnService.Builder builder = service.getBuilder();
final VpnService.Builder builder = service.getBuilder();
builder.setSession(tunnel.getName());
for (final IPCidr addr : config.getInterface().getAddresses())
@@ -166,13 +169,13 @@ public final class GoBackend implements Backend {
builder.setMtu(mtu);
builder.setBlocking(true);
ParcelFileDescriptor tun = builder.establish();
final ParcelFileDescriptor tun = builder.establish();
if (tun == null)
throw new Exception("Unable to create tun device");
currentTunnelHandle = wgTurnOn(tunnel.getName(), tun.detachFd(), fmt.toString());
currentTunnelHandle = wgTurnOn(tunnel.getName(), tun.detachFd(), goConfig);
if (currentTunnelHandle < 0)
throw new Exception("Unable to turn tunnel on (wgTurnOn return " + currentTunnelHandle + ")");
throw new Exception("Unable to turn tunnel on (wgTurnOn return " + currentTunnelHandle + ')');
currentTunnel = tunnel;