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114 changes: 114 additions & 0 deletions
114
server/desktop/src/main/java/dev/slimevr/desktop/platform/linux/UnixSocketConnection.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| package dev.slimevr.desktop.platform.linux; | ||
|
|
||
| import dev.slimevr.protocol.ConnectionContext; | ||
| import dev.slimevr.protocol.GenericConnection; | ||
| import io.eiren.util.logging.LogManager; | ||
|
|
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| import java.io.IOException; | ||
| import java.nio.ByteBuffer; | ||
| import java.nio.ByteOrder; | ||
| import java.nio.channels.SocketChannel; | ||
| import java.util.UUID; | ||
|
|
||
|
|
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| public class UnixSocketConnection implements GenericConnection { | ||
| public final UUID id; | ||
| public final ConnectionContext context; | ||
| private final ByteBuffer dst = ByteBuffer.allocate(2048).order(ByteOrder.LITTLE_ENDIAN); | ||
| private final SocketChannel channel; | ||
| private int remainingBytes; | ||
|
|
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| public UnixSocketConnection(SocketChannel channel) { | ||
| this.id = UUID.randomUUID(); | ||
| this.context = new ConnectionContext(); | ||
| this.channel = channel; | ||
| } | ||
|
|
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| @Override | ||
| public UUID getConnectionId() { | ||
| return id; | ||
| } | ||
|
|
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| @Override | ||
| public ConnectionContext getContext() { | ||
| return this.context; | ||
| } | ||
|
|
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| public boolean isConnected() { | ||
| return this.channel.isConnected(); | ||
| } | ||
|
|
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| private void resetChannel() { | ||
| try { | ||
| this.channel.close(); | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void send(ByteBuffer bytes) { | ||
| if (!this.channel.isConnected()) | ||
| return; | ||
| try { | ||
| ByteBuffer[] src = new ByteBuffer[] { | ||
| ByteBuffer.allocate(4).order(ByteOrder.LITTLE_ENDIAN), | ||
| bytes.slice(), | ||
| }; | ||
| src[0].putInt(src[1].remaining() + 4); | ||
| src[0].flip(); | ||
| synchronized (this) { | ||
| while (src[1].hasRemaining()) { | ||
| this.channel.write(src); | ||
| } | ||
| } | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| } | ||
|
|
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| public ByteBuffer read() { | ||
| if (dst.position() < 4 || dst.position() < dst.getInt(0)) { | ||
| if (!this.channel.isConnected()) | ||
| return null; | ||
| try { | ||
| int result = this.channel.read(dst); | ||
| if (result == -1) { | ||
| LogManager.info("[SolarXR Bridge] Reached end-of-stream on connection"); | ||
| this.resetChannel(); | ||
| return null; | ||
| } | ||
| if (dst.position() < 4) { | ||
| return null; | ||
| } | ||
| } catch (IOException e) { | ||
| e.printStackTrace(); | ||
| this.resetChannel(); | ||
| return null; | ||
| } | ||
| } | ||
| int messageLength = dst.getInt(0); | ||
| if (messageLength > 1024) { | ||
| LogManager | ||
| .severe( | ||
| "[SolarXR Bridge] Buffer overflow on socket. Message length: " + messageLength | ||
| ); | ||
| this.resetChannel(); | ||
| return null; | ||
| } | ||
| if (dst.position() < messageLength) { | ||
| return null; | ||
| } | ||
| remainingBytes = dst.position() - messageLength; | ||
| dst.position(4); | ||
| dst.limit(messageLength); | ||
| return dst; | ||
| } | ||
|
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||
| public void next() { | ||
| dst.position(dst.limit()); | ||
| dst.limit(dst.limit() + remainingBytes); | ||
| dst.compact(); | ||
| dst.limit(dst.capacity()); | ||
| } | ||
| } |
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