1 files changed, 38 insertions, 0 deletions
diff --git a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
index 0861a3a8..0d770fef 100644
--- a/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
+++ b/src/main/java/eu/siacs/conversations/persistance/FileBackend.java
@@ -26,6 +26,7 @@ import java.io.ByteArrayOutputStream;
 import java.io.Closeable;
 import java.io.File;
 import java.io.FileDescriptor;
+import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -402,6 +403,43 @@ public class FileBackend {
 		}
 	}
 
+	public Avatar getStoredPepAvatar(String hash) {
+		if (hash == null) {
+			return null;
+		}
+		Avatar avatar = new Avatar();
+		File file = new File(getAvatarPath(hash));
+		FileInputStream is = null;
+		try {
+			BitmapFactory.Options options = new BitmapFactory.Options();
+			options.inJustDecodeBounds = true;
+			BitmapFactory.decodeFile(file.getAbsolutePath(), options);
+			is = new FileInputStream(file);
+			ByteArrayOutputStream mByteArrayOutputStream = new ByteArrayOutputStream();
+			Base64OutputStream mBase64OutputStream = new Base64OutputStream(mByteArrayOutputStream, Base64.DEFAULT);
+			MessageDigest digest = MessageDigest.getInstance("SHA-1");
+			DigestOutputStream os = new DigestOutputStream(mBase64OutputStream, digest);
+			byte[] buffer = new byte[4096];
+			int length;
+			while ((length = is.read(buffer)) > 0) {
+				os.write(buffer, 0, length);
+			}
+			os.flush();
+			os.close();
+			avatar.sha1sum = CryptoHelper.bytesToHex(digest.digest());
+			avatar.image = new String(mByteArrayOutputStream.toByteArray());
+			avatar.height = options.outHeight;
+			avatar.width = options.outWidth;
+			return avatar;
+		} catch (IOException e) {
+			return null;
+		} catch (NoSuchAlgorithmException e) {
+			return null;
+		} finally {
+			close(is);
+		}
+	}
+
 	public boolean isAvatarCached(Avatar avatar) {
 		File file = new File(getAvatarPath(avatar.getFilename()));
 		return file.exists();