diff options
Diffstat (limited to 'src/main/java/eu/siacs/conversations/xmpp/jingle')
3 files changed, 77 insertions, 4 deletions
diff --git a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleInbandTransport.java b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleInbandTransport.java index 6f31f163..11055b8f 100644 --- a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleInbandTransport.java +++ b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleInbandTransport.java @@ -93,7 +93,7 @@ public class JingleInbandTransport extends JingleTransport { digest.reset(); file.getParentFile().mkdirs(); file.createNewFile(); - this.fileOutputStream = file.createOutputStream(); + this.fileOutputStream = createOutputStream(file); if (this.fileOutputStream == null) { Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could not create output stream"); callback.onFileTransferAborted(); @@ -120,7 +120,7 @@ public class JingleInbandTransport extends JingleTransport { this.fileSize = this.remainingSize; this.digest = MessageDigest.getInstance("SHA-1"); this.digest.reset(); - fileInputStream = this.file.createInputStream(); + fileInputStream = createInputStream(this.file); if (fileInputStream == null) { Log.d(Config.LOGTAG,account.getJid().toBareJid()+": could no create input stream"); callback.onFileTransferAborted(); diff --git a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java index 8d74f44e..55039070 100644 --- a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java +++ b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleSocks5Transport.java @@ -106,7 +106,7 @@ public class JingleSocks5Transport extends JingleTransport { try { MessageDigest digest = MessageDigest.getInstance("SHA-1"); digest.reset(); - fileInputStream = file.createInputStream(); + fileInputStream = createInputStream(file); //file.createInputStream(); if (fileInputStream == null) { Log.d(Config.LOGTAG, connection.getAccount().getJid().toBareJid() + ": could not create input stream"); callback.onFileTransferAborted(); @@ -157,7 +157,7 @@ public class JingleSocks5Transport extends JingleTransport { socket.setSoTimeout(30000); file.getParentFile().mkdirs(); file.createNewFile(); - fileOutputStream = file.createOutputStream(); + fileOutputStream = createOutputStream(file); if (fileOutputStream == null) { callback.onFileTransferAborted(); Log.d(Config.LOGTAG, connection.getAccount().getJid().toBareJid() + ": could not create output stream"); diff --git a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleTransport.java b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleTransport.java index e832d3f5..1219794f 100644 --- a/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleTransport.java +++ b/src/main/java/eu/siacs/conversations/xmpp/jingle/JingleTransport.java @@ -1,5 +1,24 @@ package eu.siacs.conversations.xmpp.jingle; +import android.util.Log; + +import java.io.FileInputStream; +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; + +import javax.crypto.Cipher; +import javax.crypto.CipherInputStream; +import javax.crypto.CipherOutputStream; +import javax.crypto.NoSuchPaddingException; +import javax.crypto.spec.IvParameterSpec; +import javax.crypto.spec.SecretKeySpec; + +import eu.siacs.conversations.Config; import eu.siacs.conversations.entities.DownloadableFile; public abstract class JingleTransport { @@ -12,4 +31,58 @@ public abstract class JingleTransport { final OnFileTransmissionStatusChanged callback); public abstract void disconnect(); + + protected InputStream createInputStream(DownloadableFile file) { + FileInputStream is; + try { + is = new FileInputStream(file); + if (file.getKey() == null) { + return is; + } + } catch (FileNotFoundException e) { + return null; + } + try { + IvParameterSpec ips = new IvParameterSpec(file.getIv()); + Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); + cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(file.getKey(), "AES"), ips); + Log.d(Config.LOGTAG, "opening encrypted input stream"); + return new CipherInputStream(is, cipher); + } catch (InvalidKeyException e) { + return null; + } catch (NoSuchAlgorithmException e) { + return null; + } catch (NoSuchPaddingException e) { + return null; + } catch (InvalidAlgorithmParameterException e) { + return null; + } + } + + protected OutputStream createOutputStream(DownloadableFile file) { + FileOutputStream os; + try { + os = new FileOutputStream(file); + if (file.getKey() == null) { + return os; + } + } catch (FileNotFoundException e) { + return null; + } + try { + IvParameterSpec ips = new IvParameterSpec(file.getIv()); + Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); + cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(file.getKey(), "AES"), ips); + Log.d(Config.LOGTAG, "opening encrypted output stream"); + return new CipherOutputStream(os, cipher); + } catch (InvalidKeyException e) { + return null; + } catch (NoSuchAlgorithmException e) { + return null; + } catch (NoSuchPaddingException e) { + return null; + } catch (InvalidAlgorithmParameterException e) { + return null; + } + } } |