Add additional info when backup verification fails.

app/src/main/java/org/thoughtcrime/securesms/backup/BackupVerifier.kt

@@ -48,7 +48,7 @@ object BackupVerifier {
     try {
       inputStream.readAttachmentTo(NullOutputStream, attachment.length)
     } catch (e: IOException) {
-      Log.w(TAG, "Bad attachment: ${attachment.attachmentId}", e)
+      Log.w(TAG, "Bad attachment id: ${attachment.attachmentId} len: ${attachment.length}", e)
       return false
     }
 
@@ -59,7 +59,7 @@ object BackupVerifier {
     try {
       inputStream.readAttachmentTo(NullOutputStream, sticker.length)
     } catch (e: IOException) {
-      Log.w(TAG, "Bad sticker: ${sticker.rowId}", e)
+      Log.w(TAG, "Bad sticker id: ${sticker.rowId} len: ${sticker.length}", e)
       return false
     }
     return true
@@ -69,7 +69,7 @@ object BackupVerifier {
     try {
       inputStream.readAttachmentTo(NullOutputStream, avatar.length)
     } catch (e: IOException) {
-      Log.w(TAG, "Bad sticker: ${avatar.recipientId}", e)
+      Log.w(TAG, "Bad avatar id: ${avatar.recipientId} len: ${avatar.length}", e)
       return false
     }
     return true

app/src/main/java/org/thoughtcrime/securesms/backup/FullBackupExporter.java

@@ -473,7 +473,7 @@ public class FullBackupExporter extends FullBackupBase {
       try (InputStream inputStream = openAttachmentStream(attachmentSecret, random, data)) {
         outputStream.write(new AttachmentId(rowId, uniqueId), inputStream, size);
       } catch (FileNotFoundException e) {
-        Log.w(TAG, "Missing attachment: " + e.getMessage());
+        Log.w(TAG, "Missing attachment", e);
       }
     }
 
@@ -498,7 +498,7 @@ public class FullBackupExporter extends FullBackupBase {
       try (InputStream inputStream = ModernDecryptingPartInputStream.createFor(attachmentSecret, random, new File(data), 0)) {
         outputStream.writeSticker(rowId, inputStream, size);
       } catch (FileNotFoundException e) {
-        Log.w(TAG, "Missing sticker: " + e.getMessage());
+        Log.w(TAG, "Missing sticker", e);
       }
     }
 
@@ -516,7 +516,7 @@ public class FullBackupExporter extends FullBackupBase {
         result += read;
       }
     } catch (FileNotFoundException e) {
-      Log.w(TAG, "Missing attachment: " + e.getMessage());
+      Log.w(TAG, "Missing attachment for size calculation", e);
       return 0;
     } catch (IOException e) {
       Log.w(TAG, "Failed to determine stream length", e);

core-util/src/main/java/org/signal/core/util/StreamUtil.java

@@ -52,7 +52,7 @@ public final class StreamUtil {
 
     for (;;) {
       int read = in.read(buffer, offset, len - offset);
-      if (read == -1) throw new EOFException("Stream ended early");
+      if (read == -1) throw new EOFException("Stream ended early, offset: " + offset + " len: " + len);
 
       if (read + offset < len) offset += read;
       else                		 return;