From c2e47a8a1e54911dd1d5a314aa4ba8590025d831 Mon Sep 17 00:00:00 2001
From: UnlegitDqrk <finn.abadi@outlook.de>
Date: Sun, 8 Feb 2026 19:04:01 +0100
Subject: [PATCH] Bug fixes

---
 pom.xml                                       |  2 +-
 .../packets/v1_0_0/beta/AuthPacket.java       | 42 ++++++++++---------
 2 files changed, 23 insertions(+), 21 deletions(-)

diff --git a/pom.xml b/pom.xml
index f3ff738..2e24596 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,7 +6,7 @@
 
     <groupId>org.openautonomousconnection</groupId>
     <artifactId>Protocol</artifactId>
-    <version>1.0.0-BETA.7.5</version>
+    <version>1.0.0-BETA.7.6</version>
     <organization>
         <name>Open Autonomous Connection</name>
         <url>https://open-autonomous-connection.org/</url>
diff --git a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java
index 9bef9cc..0793dad 100644
--- a/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java
+++ b/src/main/java/org/openautonomousconnection/protocol/packets/v1_0_0/beta/AuthPacket.java
@@ -18,6 +18,7 @@ import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.File;
 import java.io.IOException;
+import java.security.NoSuchAlgorithmException;
 import java.util.UUID;
 
 /**
@@ -54,12 +55,10 @@ public final class AuthPacket extends OACPacket {
 
     @Override
     public void onWrite(DataOutputStream objectOutputStream) throws IOException {
-        if (protocolBridge.isRunningAsWebServer()) {
-            objectOutputStream.writeUTF(protocolBridge.getProtocolVersion().name());
-            return;
-        }
+
 
         if (protocolBridge.isRunningAsINSServer()) {
+            objectOutputStream.writeBoolean(true);
             objectOutputStream.writeUTF(protocolBridge.getProtocolVersion().name());
 
             String caPem = "N/A";
@@ -82,6 +81,12 @@ public final class AuthPacket extends OACPacket {
             return;
         }
 
+        if (protocolBridge.isRunningAsServer()) {
+            objectOutputStream.writeBoolean(false);
+            objectOutputStream.writeUTF(protocolBridge.getProtocolVersion().name());
+            return;
+        }
+
         if (protocolBridge.isRunningAsClient()) {
             UUID clientConnectionId = null;
 
@@ -134,9 +139,10 @@ public final class AuthPacket extends OACPacket {
         }
 
         if (protocolBridge.isRunningAsClient()) {
+            boolean fromINS = objectInputStream.readBoolean();
             ProtocolVersion serverVersion = ProtocolVersion.valueOf(objectInputStream.readUTF());
 
-            try {
+            if (fromINS) {
                 if (!protocolBridge.isVersionSupported(serverVersion)) {
                     setResponseCode(INSResponseStatus.RESPONSE_AUTH_FAILED);
                     if (protocolBridge.getProtocolClient() != null && protocolBridge.getProtocolClient().getClientINSConnection() != null) {
@@ -155,9 +161,16 @@ public final class AuthPacket extends OACPacket {
                     setResponseCode(INSResponseStatus.RESPONSE_AUTH_FAILED);
                 } else {
                     byte[] caBytes = caPem.getBytes(java.nio.charset.StandardCharsets.UTF_8);
-                    java.security.MessageDigest md = java.security.MessageDigest.getInstance("SHA-256");
-                    String fp = java.util.HexFormat.of().formatHex(md.digest(caBytes));
+                    String fp = "N/A";
 
+                    try {
+                        java.security.MessageDigest md = java.security.MessageDigest.getInstance("SHA-256");
+                        fp = java.util.HexFormat.of().formatHex(md.digest(caBytes));
+                    } catch (NoSuchAlgorithmException ignored) {
+                        setResponseCode(INSResponseStatus.RESPONSE_AUTH_FAILED);
+                        protocolBridge.getProtocolClient().getClientINSConnection().disconnect();
+                        return;
+                    }
 
                     File caPemFile = new File(protocolBridge.getProtocolClient().getFolderStructure().publicCAFolder, caPrefix + ".pem");
 
@@ -165,10 +178,9 @@ public final class AuthPacket extends OACPacket {
                             protocolBridge.getProtocolClient().getFolderStructure().publicCAFolder,
                             caPrefix + ".fp");
 
-                    boolean allowWritePem = false;
 
                     if (fpFile.exists()) {
-                        String existing = FileUtils.readFileLines(fpFile).get(0);
+                        String existing = FileUtils.readFileLines(fpFile).getFirst();
                         if (!existing.equalsIgnoreCase(fp)) {
                             if (!protocolBridge.getProtocolClient().trustNewINSFingerprint(existing, fp)) {
                                 setResponseCode(INSResponseStatus.RESPONSE_AUTH_FAILED);
@@ -176,7 +188,6 @@ public final class AuthPacket extends OACPacket {
                                 return;
                             } else {
                                 FileUtils.writeFile(fpFile, fp + System.lineSeparator());
-                                allowWritePem = true;
                             }
                         }
                     } else {
@@ -186,19 +197,10 @@ public final class AuthPacket extends OACPacket {
                             return;
                         } else {
                             FileUtils.writeFile(fpFile, fp + System.lineSeparator());
-                            allowWritePem = true;
                         }
                     }
 
-                    if (!allowWritePem) {
-                        setResponseCode(INSResponseStatus.RESPONSE_AUTH_FAILED);
-                        return;
-                    }
-
                     try {
-                        if (!caPemFile.exists()) caPemFile.createNewFile();
-
-                        // FIX: Correct file assignments.
                         FileUtils.writeFile(caPemFile, caPem);
                     } catch (Exception exception) {
                         protocolBridge.getLogger().exception("Failed to create/save ca-files", exception);
@@ -210,7 +212,7 @@ public final class AuthPacket extends OACPacket {
                 protocolBridge.getProtocolValues().eventManager.executeEvent(
                         new ConnectedToProtocolINSServerEvent(protocolBridge.getProtocolClient())
                 );
-            } catch (Exception ignored) {
+            } else {
                 protocolBridge.getProtocolClient().setServerVersion(serverVersion);
                 protocolBridge.getProtocolValues().eventManager.executeEvent(
                         new ConnectedToProtocolServerEvent(protocolBridge.getProtocolClient())