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/*
* Copyright © 2017-2018 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.config;
import android.annotation.SuppressLint;
import com.wireguard.android.Application;
import com.wireguard.android.R;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.UnknownHostException;
import javax.annotation.Nullable;
public class InetEndpoint {
private final String host;
private final int port;
@Nullable private InetAddress resolvedHost;
public InetEndpoint(@Nullable final String endpoint) {
if (endpoint.indexOf('/') != -1 || endpoint.indexOf('?') != -1 || endpoint.indexOf('#') != -1)
throw new IllegalArgumentException(Application.get().getString(R.string.tunnel_error_forbidden_endpoint_chars));
final URI uri;
try {
uri = new URI("wg://" + endpoint);
} catch (final URISyntaxException e) {
throw new IllegalArgumentException(e);
}
host = uri.getHost();
port = uri.getPort();
}
public String getHost() {
return host;
}
public int getPort() {
return port;
}
@SuppressLint("DefaultLocale")
public String getResolvedEndpoint() throws UnknownHostException {
if (resolvedHost == null) {
final InetAddress[] candidates = InetAddress.getAllByName(host);
if (candidates.length == 0)
throw new UnknownHostException(host);
for (final InetAddress addr : candidates) {
if (addr instanceof Inet4Address) {
resolvedHost = addr;
break;
}
}
if (resolvedHost == null)
resolvedHost = candidates[0];
}
return String.format(resolvedHost instanceof Inet6Address ?
"[%s]:%d" : "%s:%d", resolvedHost.getHostAddress(), port);
}
@SuppressLint("DefaultLocale")
public String getEndpoint() {
return String.format(host.contains(":") && !host.contains("[") ?
"[%s]:%d" : "%s:%d", host, port);
}
}
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