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* docs: Add polish translation * README: Add link to polish translation * docs: Polish version of README - Fix links * docs: Add links to polish translation, fix * docs: Fix polish translation thanks to support team * docs: Add links to polish translation in english version of docs * fix links --------- Co-authored-by: Evgeny Poberezkin <evgeny@poberezkin.com>
57 lines
2.9 KiB
Markdown
57 lines
2.9 KiB
Markdown
---
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title: Accessing files in Android app
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revision: 07.02.2023
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---
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| 07.02.2023 | EN, [CZ](/docs/lang/cs/ANDROID.md), [FR](/docs/lang/fr/ANDROID.md), [PL](/docs/lang/pl/ANDROID.md) |
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# Accessing files in Android app
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SimpleX uses databases and stores its preferences inside private data directory in Android. The directory contains:
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- databases
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- sent and received files
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- temporary files that will be deleted when not needed
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- user preferences.
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If you want to view what's stored inside SimpleX data directory you need to have:
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- Unix-based operating system (or [MinGW](https://www.mingw-w64.org/downloads/) on Windows)
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- ADB (Android Debug Bridge) tool installed on a computer ([download it here](https://developer.android.com/studio/releases/platform-tools) and install)
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- your device connected via USB or Wi-Fi to the computer.
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## The process:
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- open SimpleX, go to `Database passphrase & export`, enable `App data backup`. This will make other steps working
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- _optional_: if you want to view database contents, change database passphrase from random to yours. To do this, stop a chat in `Database passphrase & export` screen, open `Database passphrase`, enter new passphrase and confirm it, then update it. Do not forget it, otherwise you'll lose all your data in case passphrase will be asked again later
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- open a terminal emulator (Windows CMD/Powershell will not work) and change directory to the one you want to use for storing the backup:
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```bash
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cd /tmp # just an example
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```
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Then run the following:
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```bash
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adb -d backup -f chat.ab -noapk chat.simplex.app &&
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tail -n +5 chat.ab > chat.dat &&
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printf "\x1f\x8b\x08\x00\x00\x00\x00\x00" | cat - chat.dat > chat.gz &&
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tar -xvzf chat.gz
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```
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Now unlock the device and confirm a backup operation without using a password for encryption, otherwise the commands will not work.
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After that the backup should be ended. If you see an error saying `tar: Error is not recoverable: exiting now` but before that you have printed some file names, don't worry, it's ok.
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Now the backed-up files will be inside `./apps/chat.simplex.app/`.
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Please, note, that if you use a modern version of SimpleX, the databases will be encrypted, and you'll not be able to view contents of them without using `sqlcipher` application and without knowing decryption passphrase (you need to change it to yours from randomly generated in the app firstly).
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## Decrypting databases
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In order to view database data you need to decrypt it first. Install `sqlcipher` using your favorite package manager and run the following commands in the directory with databases:
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```bash
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sqlcipher files_chat.db
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pragma key="youDecryptionPassphrase";
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# Ensure it works fine
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select * from users;
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```
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If you see `Parse error: no such table: users`, make sure you entered correct passphrase, and you have changed passphrase from random in Android app (if you got this database from Android device, of course).
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