narayana/conversations-classic
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fixes for otr file transfer

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This commit is contained in:
iNPUTmice 2014-06-20 19:28:47 +02:00
parent 1cf055d2fd
commit 49b7c7779d
4 changed files with 49 additions and 23 deletions
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8
src/eu/siacs/conversations/utils/CryptoHelper.java
View file

@ -5,9 +5,9 @@ import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Arrays;
import eu.siacs.conversations.entities.Account;
import android.util.Base64;
public class CryptoHelper {
@ -28,7 +28,11 @@ public class CryptoHelper {
}
public static byte[] hexToBytes(String hexString) {
return new BigInteger(hexString, 16).toByteArray();
byte[] array = new BigInteger(hexString, 16).toByteArray();
if (array[0] == 0) {
array = Arrays.copyOfRange(array, 1, array.length);
}
return array;
}
public static String saslPlain(String username, String password) {

14
src/eu/siacs/conversations/xmpp/jingle/JingleFile.java
View file

@ -25,7 +25,11 @@ public class JingleFile extends File {
}
public long getExpectedSize() {
return this.expectedSize;
if (this.aeskey!=null) {
return (this.expectedSize/16 + 1) * 16;
} else {
return this.expectedSize;
}
}
public void setExpectedSize(long size) {
@ -41,18 +45,18 @@ public class JingleFile extends File {
}
public void setKey(byte[] key) {
Log.d("xmppService","using aes key "+CryptoHelper.bytesToHex(key));
if (key.length>=32) {
byte[] secretKey = new byte[32];
System.arraycopy(key, 0, secretKey, 0, 32);
this.aeskey = new SecretKeySpec(key, "AES");
this.aeskey = new SecretKeySpec(secretKey, "AES");
} else if (key.length>=16) {
byte[] secretKey = new byte[15];
byte[] secretKey = new byte[16];
System.arraycopy(key, 0, secretKey, 0, 16);
this.aeskey = new SecretKeySpec(key, "AES");
this.aeskey = new SecretKeySpec(secretKey, "AES");
} else {
Log.d("xmppService","weird key");
}
Log.d("xmppService","using aes key "+CryptoHelper.bytesToHex(this.aeskey.getEncoded()));
}
public Key getKey() {

35
src/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java
View file

@ -6,6 +6,7 @@ import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.ObjectInputStream.GetField;
import java.net.Socket;
import java.net.UnknownHostException;
import java.security.MessageDigest;
@ -97,17 +98,16 @@ public class JingleSocks5Transport extends JingleTransport {
digest.reset();
fileInputStream = getInputStream(file);
int count;
long txbytes = 0;
long txBytes = 0;
byte[] buffer = new byte[8192];
while ((count = fileInputStream.read(buffer)) != -1) {
txbytes += count;
while ((count = fileInputStream.read(buffer)) > 0) {
txBytes += count;
outputStream.write(buffer, 0, count);
digest.update(buffer, 0, count);
Log.d("xmppService","tx bytes: "+txbytes);
}
Log.d("xmppService","txBytes="+txBytes);
outputStream.flush();
file.setSha1Sum(CryptoHelper.bytesToHex(digest.digest()));
//outputStream.close();
if (callback!=null) {
callback.onFileTransmitted(file);
}
@ -115,7 +115,8 @@ public class JingleSocks5Transport extends JingleTransport {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
Log.d("xmppService","io exception: "+e.getMessage());
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
// TODO Auto-generated catch block
e.printStackTrace();
@ -149,26 +150,32 @@ public class JingleSocks5Transport extends JingleTransport {
long remainingSize = file.getExpectedSize();
byte[] buffer = new byte[8192];
int count = buffer.length;
//while(remainingSize > 0) {
while((count = inputStream.read(buffer)) > 0) {
Log.d("xmppService","remaining size: "+remainingSize+" reading "+count+" bytes");
long rxBytes = 0;
while(remainingSize > 0) {
count = inputStream.read(buffer);
if (count!=-1) {
if (count==-1) {
Log.d("xmppService","read end");
} else {
rxBytes += count;
fileOutputStream.write(buffer, 0, count);
digest.update(buffer, 0, count);
remainingSize-=count;
}
remainingSize-=count;
}
Log.d("xmppService","rx bytes="+rxBytes);
fileOutputStream.flush();
fileOutputStream.close();
file.setSha1Sum(CryptoHelper.bytesToHex(digest.digest()));
callback.onFileTransmitted(file);
} catch (FileNotFoundException e) {
Log.d("xmppService","file not found exception");
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
Log.d("xmppService","io exception: "+e.getMessage());
// TODO Auto-generated catch block
e.printStackTrace();
} catch (NoSuchAlgorithmException e) {
Log.d("xmppService","no such algo"+e.getMessage());
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}).start();

15
src/eu/siacs/conversations/xmpp/jingle/JingleTransport.java
View file

@ -5,6 +5,7 @@ import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.security.InvalidAlgorithmParameterException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;
@ -12,6 +13,7 @@ import javax.crypto.Cipher;
import javax.crypto.CipherOutputStream;
import javax.crypto.CipherInputStream;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import android.util.Log;
@ -19,14 +21,16 @@ 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);
private byte[] iv = {0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0xf};
protected InputStream getInputStream(JingleFile file) throws FileNotFoundException {
if (file.getKey() == null) {
return new FileInputStream(file);
} else {
try {
IvParameterSpec ips = new IvParameterSpec(iv);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, file.getKey());
cipher.init(Cipher.ENCRYPT_MODE, file.getKey(),ips);
Log.d("xmppService","opening encrypted input stream");
return new CipherInputStream(new FileInputStream(file), cipher);
} catch (NoSuchAlgorithmException e) {
@ -38,6 +42,9 @@ public abstract class JingleTransport {
} catch (InvalidKeyException e) {
Log.d("xmppService","invalid key: "+e.getMessage());
return null;
} catch (InvalidAlgorithmParameterException e) {
Log.d("xmppService","invavid iv:"+e.getMessage());
return null;
}
}
}
@ -47,8 +54,9 @@ public abstract class JingleTransport {
return new FileOutputStream(file);
} else {
try {
IvParameterSpec ips = new IvParameterSpec(iv);
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, file.getKey());
cipher.init(Cipher.DECRYPT_MODE, file.getKey(),ips);
Log.d("xmppService","opening encrypted output stream");
return new CipherOutputStream(new FileOutputStream(file), cipher);
} catch (NoSuchAlgorithmException e) {
@ -60,6 +68,9 @@ public abstract class JingleTransport {
} catch (InvalidKeyException e) {
Log.d("xmppService","invalid key: "+e.getMessage());
return null;
} catch (InvalidAlgorithmParameterException e) {
Log.d("xmppService","invavid iv:"+e.getMessage());
return null;
}
}
}