not working version of otr file transfer

1 files changed, 59 insertions, 0 deletions

diff --git a/src/eu/siacs/conversations/xmpp/jingle/JingleTransport.java b/src/eu/siacs/conversations/xmpp/jingle/JingleTransport.java
index 290bb5d3..b96fefed 100644
--- a/src/eu/siacs/conversations/xmpp/jingle/JingleTransport.java
+++ b/src/eu/siacs/conversations/xmpp/jingle/JingleTransport.java
@@ -1,7 +1,66 @@
 package eu.siacs.conversations.xmpp.jingle;
 
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.security.InvalidKeyException;
+import java.security.NoSuchAlgorithmException;
+
+import javax.crypto.Cipher;
+import javax.crypto.CipherOutputStream;
+import javax.crypto.CipherInputStream;
+import javax.crypto.NoSuchPaddingException;
+
+import android.util.Log;
+
 public abstract class JingleTransport {
 	public abstract void connect(final OnTransportConnected callback);
 	public abstract void receive(final JingleFile file, final OnFileTransmitted callback);
 	public abstract void send(final JingleFile file, final OnFileTransmitted callback);
+	
+	protected InputStream getInputStream(JingleFile file) throws FileNotFoundException {
+		if (file.getKey() == null) {
+			return new FileInputStream(file);
+		} else {
+			try {
+				Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
+				cipher.init(Cipher.ENCRYPT_MODE, file.getKey());
+				Log.d("xmppService","opening encrypted input stream");
+				return new CipherInputStream(new FileInputStream(file), cipher);
+			} catch (NoSuchAlgorithmException e) {
+				Log.d("xmppService","no such algo: "+e.getMessage());
+				return null;
+			} catch (NoSuchPaddingException e) {
+				Log.d("xmppService","no such padding: "+e.getMessage());
+				return null;
+			} catch (InvalidKeyException e) {
+				Log.d("xmppService","invalid key: "+e.getMessage());
+				return null;
+			}
+		}
+	}
+	
+	protected OutputStream getOutputStream(JingleFile file) throws FileNotFoundException {
+		if (file.getKey() == null) {
+			return new FileOutputStream(file);
+		} else {
+			try {
+				Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
+				cipher.init(Cipher.DECRYPT_MODE, file.getKey());
+				Log.d("xmppService","opening encrypted output stream");
+				return new CipherOutputStream(new FileOutputStream(file), cipher);
+			} catch (NoSuchAlgorithmException e) {
+				Log.d("xmppService","no such algo: "+e.getMessage());
+				return null;
+			} catch (NoSuchPaddingException e) {
+				Log.d("xmppService","no such padding: "+e.getMessage());
+				return null;
+			} catch (InvalidKeyException e) {
+				Log.d("xmppService","invalid key: "+e.getMessage());
+				return null;
+			}
+		}
+	}
 }