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Geyser
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Use regex to parse version

This commit is contained in:
onebeastchris 2024-03-15 13:40:51 +01:00
parent adc90f94d7
commit 28283f2b8b
1 changed files with 18 additions and 36 deletions
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54
core/src/main/java/org/geysermc/geyser/network/netty/Bootstraps.java
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@ -34,17 +34,18 @@ import lombok.experimental.UtilityClass;
import org.geysermc.geyser.GeyserImpl;
import java.util.concurrent.CompletableFuture;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
@UtilityClass
public final class Bootstraps {
// The REUSEPORT_AVAILABLE socket option is available starting from kernel version 3.9.
// This option allows multiple sockets to listen on the same IP address and port without conflict.
private static final int[] REUSEPORT_VERSION = new int[]{3, 9, 0};
private static final int[] REUSEPORT_VERSION = new int[]{3, 9};
private static final boolean REUSEPORT_AVAILABLE;
static {
boolean available;
String kernelVersion;
try {
kernelVersion = Native.KERNEL_VERSION;
@ -54,33 +55,12 @@ public final class Bootstraps {
}
if (kernelVersion == null) {
available = false;
REUSEPORT_AVAILABLE = false;
} else {
// Some kernel versions contain a fun `-`.
if (kernelVersion.contains("-")) {
int index = kernelVersion.indexOf('-');
if (index > -1) {
kernelVersion = kernelVersion.substring(0, index);
}
}
// Then, e.g. raspberry pi's contain a `+`! (example: 6.6.20+rpt-rpi-2712)
if (kernelVersion.contains("+")) {
int index = kernelVersion.indexOf('+');
if (index > -1) {
kernelVersion = kernelVersion.substring(0, index);
}
}
try {
int[] kernelVer = fromString(kernelVersion);
available = checkVersion(kernelVer, 0);
} catch (IllegalArgumentException e) {
GeyserImpl.getInstance().getLogger().warning("Unable to determine kernel version! Defaulting to no port reusing.");
GeyserImpl.getInstance().getLogger().debug("kernel version: " + kernelVersion + " exception: " + e);
available = false;
}
GeyserImpl.getInstance().getLogger().warning("kernel version: " + kernelVersion);
int[] kernelVer = fromString(kernelVersion);
REUSEPORT_AVAILABLE = checkVersion(kernelVer, 0);
}
REUSEPORT_AVAILABLE = available;
}
public static boolean isReusePortAvailable() {
@ -94,17 +74,19 @@ public final class Bootstraps {
}
}
private static int[] fromString(String ver) throws IllegalArgumentException {
String[] parts = ver.split("\\.");
if (parts.length < 2) {
throw new IllegalArgumentException("At least 2 version numbers required");
private static int[] fromString(String input) {
// Match only beginning of string for at least two digits separated by dot
Pattern pattern = Pattern.compile("^(\\d+)\\.(\\d+)");
Matcher matcher = pattern.matcher(input);
int[] version = {0, 0};
if (matcher.find()) {
version[0] = Integer.parseInt(matcher.group(1));
version[1] = Integer.parseInt(matcher.group(2));
}
return new int[]{
Integer.parseInt(parts[0]),
Integer.parseInt(parts[1]),
parts.length == 2 ? 0 : Integer.parseInt(parts[2])
};
return version;
}
private static boolean checkVersion(int[] ver, int i) {