+ public File retrieveAttachment(TextSecureAttachmentPointer pointer) throws IOException, InvalidMessageException {
+ final TextSecureMessageReceiver messageReceiver = new TextSecureMessageReceiver(URL, TRUST_STORE, username, password, signalingKey);
+
+ File tmpFile = File.createTempFile("ts_attach_" + pointer.getId(), ".tmp");
+ InputStream input = messageReceiver.retrieveAttachment(pointer, tmpFile);
+
+ new File(attachmentsPath).mkdirs();
+ File outputFile = new File(attachmentsPath + "/" + pointer.getId());
+ OutputStream output = null;
+ try {
+ output = new FileOutputStream(outputFile);
+ byte[] buffer = new byte[4096];
+ int read;
+
+ while ((read = input.read(buffer)) != -1) {
+ output.write(buffer, 0, read);
+ }
+ } catch (FileNotFoundException e) {
+ e.printStackTrace();
+ return null;
+ } finally {
+ if (output != null) {
+ output.close();
+ }
+ tmpFile.delete();
+ }
+ return outputFile;
+ }
+