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xeals / signal-back

Decrypt Signal encrypted backups outside the app
Apache License 2.0
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Group Export without own messages #26

Open hinrikus opened 6 years ago

hinrikus commented 6 years ago

I exported the chats of a backup. In the dumps my own messages are missing in group chats. That happens in both the csv and the xml export.

xeals commented 6 years ago

Unfortunately, it's difficult for me to test this as I don't have a group together that uses Signal, and don't have three SIM cards available to test using.

Could you download the v0.1.6 release and check the output of format -f raw? If nothing comes up in there, there's not a lot I can do.

hinrikus commented 6 years ago

Thanks for raw export. I guess, that I discovered the problem. My own messages are saved to the table "mms", since the other messages in the group are saved to table "sms". I hope that helps, I'll test it again.

xeals commented 6 years ago

Out of curiosity, do all members in the group chat also have Signal, or does (at least) one not have Signal? It appears Signal defaults to using MMS for insecure group chats, but I can't find anything on secure chats at a glance.

hinrikus commented 6 years ago

Everyone is using signal in this group. Maybe from perspective of the group chat, my own communication is insecure because it was obviously not encrypted?

Fmstrat commented 6 years ago

@xeals This happens with non-Signal users, too, so it should be possible to reproduce by group texting anyone.