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/*
* Copyright © 2017-2023 WireGuard LLC. All Rights Reserved.
* SPDX-License-Identifier: Apache-2.0
*/
package com.wireguard.android.backend;
import com.wireguard.util.NonNullForAll;
import java.util.regex.Pattern;
/**
* Represents a WireGuard tunnel.
*/
@NonNullForAll
public interface Tunnel {
int NAME_MAX_LENGTH = 15;
Pattern NAME_PATTERN = Pattern.compile("[a-zA-Z0-9_=+.-]{1,15}");
static boolean isNameInvalid(final CharSequence name) {
return !NAME_PATTERN.matcher(name).matches();
}
/**
* Get the name of the tunnel, which should always pass the !isNameInvalid test.
*
* @return The name of the tunnel.
*/
String getName();
/**
* React to a change in state of the tunnel. Should only be directly called by Backend.
*
* @param newState The new state of the tunnel.
*/
void onStateChange(State newState);
/**
* Enum class to represent all possible states of a {@link Tunnel}.
*/
enum State {
DOWN,
TOGGLE,
UP;
/**
* Get the state of a {@link Tunnel}
*
* @param running boolean indicating if the tunnel is running.
* @return State of the tunnel based on whether or not it is running.
*/
public static State of(final boolean running) {
return running ? UP : DOWN;
}
}
}
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