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-rw-r--r--src/main/java/de/bwlehrpool/bwlp_guac/Util.java30
-rw-r--r--src/main/java/de/bwlehrpool/bwlp_guac/WeakCrypto.java44
2 files changed, 74 insertions, 0 deletions
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/Util.java b/src/main/java/de/bwlehrpool/bwlp_guac/Util.java
new file mode 100644
index 0000000..2b07640
--- /dev/null
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/Util.java
@@ -0,0 +1,30 @@
+package de.bwlehrpool.bwlp_guac;
+
+import org.apache.guacamole.net.auth.AuthenticatedUser;
+import org.apache.guacamole.net.event.TunnelCloseEvent;
+import org.apache.guacamole.net.event.TunnelConnectEvent;
+
+public class Util {
+
+ public static String getUsername(TunnelConnectEvent event) {
+ return getUsername(event.getAuthenticatedUser());
+ }
+
+ public static String getUsername(TunnelCloseEvent event) {
+ return getUsername(event.getAuthenticatedUser());
+ }
+
+ public static String getUsername(AuthenticatedUser user) {
+ if (user == null)
+ return null;
+ String username = null;
+ if (user.getCredentials() != null) {
+ username = user.getCredentials().getUsername();
+ }
+ if (username == null) {
+ username = user.getIdentifier();
+ }
+ return username;
+ }
+
+}
diff --git a/src/main/java/de/bwlehrpool/bwlp_guac/WeakCrypto.java b/src/main/java/de/bwlehrpool/bwlp_guac/WeakCrypto.java
new file mode 100644
index 0000000..b7d8a11
--- /dev/null
+++ b/src/main/java/de/bwlehrpool/bwlp_guac/WeakCrypto.java
@@ -0,0 +1,44 @@
+package de.bwlehrpool.bwlp_guac;
+
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.BadPaddingException;
+import javax.crypto.Cipher;
+import javax.crypto.IllegalBlockSizeException;
+import javax.crypto.NoSuchPaddingException;
+import javax.crypto.spec.SecretKeySpec;
+
+public class WeakCrypto {
+
+ private static byte[] reverseBits(byte[] b) {
+ byte[] result = new byte[b.length];
+ for (int i = 0; i < b.length; i++) {
+ result[i] = reverseBits(b[i]);
+ }
+ return result;
+ }
+
+ private static byte reverseBits(byte input) {
+ byte result = 0x00;
+ for (int i = 0; i < 8; i++) {
+ result |= ((byte) ((input & (0x01 << i)) >>> i) << 7 - i);
+ }
+ return result;
+ }
+
+ public static byte[] vncEncrypt(byte[] pw_bytes, byte[] challenge) {
+ Cipher des;
+ try {
+ des = Cipher.getInstance("DES/ECB/NoPadding");
+ des.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(reverseBits(pw_bytes), 0, pw_bytes.length, "DES"));
+ return des.doFinal(challenge);
+ } catch (InvalidKeyException | NoSuchAlgorithmException | NoSuchPaddingException | IllegalBlockSizeException
+ | BadPaddingException e) {
+ // TODO Auto-generated catch block
+ e.printStackTrace();
+ }
+ return new byte[16];
+ }
+
+}