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package com.wireguard.config;
import java.util.HashMap;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
* The set of valid attributes for an interface or peer in a WireGuard configuration file.
*/
enum Attribute {
ADDRESS("Address"),
ALLOWED_IPS("AllowedIPs"),
DNS("DNS"),
ENDPOINT("Endpoint"),
LISTEN_PORT("ListenPort"),
MTU("MTU"),
PERSISTENT_KEEPALIVE("PersistentKeepalive"),
PRESHARED_KEY("PresharedKey"),
PRIVATE_KEY("PrivateKey"),
PUBLIC_KEY("PublicKey");
private static final Map<String, Attribute> map;
static {
map = new HashMap<>(Attribute.values().length);
for (final Attribute key : Attribute.values())
map.put(key.getToken(), key);
}
public static Attribute match(final String line) {
return map.get(line.split("\\s|=")[0]);
}
private final String token;
private final Pattern pattern;
Attribute(final String token) {
pattern = Pattern.compile(token + "\\s*=\\s*(\\S.*)");
this.token = token;
}
public String composeWith(final String value) {
return token + " = " + value + "\n";
}
public String getToken() {
return token;
}
public String parseFrom(final String line) {
final Matcher matcher = pattern.matcher(line);
if (matcher.matches())
return matcher.group(1);
return null;
}
}
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