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A privacy pass over the session folders found three leaks:
- the Steam client's IPv6 check logs "external address <the device's public IPv6>" about
twenty times a session, and the redactor kept IP addresses on purpose, so steam/
connection_log.txt carried it;
- network.txt listed the device's addresses (public IPv6 included) and the session's made-up
MAC, which is seeded from ANDROID_ID and so stable per device;
- session.log, app.log, desktop.log, steam-desktop.log, crash.log were never scrubbed (clean on
device, by luck).
The redactor now learns the device's own addresses from the session's link file (a global IPv6
as its /64, a public IPv4 exactly) and removes them wherever they appear, along with anything
logged as an "external address"; Valve's server addresses stay. network.txt gives every address
as its kind ("<public IPv6>") and masks the MAC. Every text file in a session folder goes
through the redactor when the session ends (killed sessions at the next app start), and again on
its way into the share-logs zip. Folders written before this are scrubbed once at app start.
DroidDeck
Run Valve's native ARM64 Steam client on an Adreno Android device. Steam runs in a Linux runtime under proot, with gamescope and an in-app Vulkan compositor. Windows games use Valve's ARM64 Proton and FEX. A desktop with LXQt, Firefox, and emulators is also available.
Requirements and install
Use Android 9 or newer on a supported Adreno device (730 or newer, or 8xx). Mali, Xclipse, PowerVR, and Adreno 710 are unsupported. No root is required. Allow about 3 GB for the runtime and 1.1 GB more for the desktop and emulators. Install the APK from Releases, install the Linux runtime, then press Play and sign in. Steam downloads on first launch. Install Desktop & apps to use the desktop and emulators.
On Android 12+, if Steam exits without a log, turn off Restrict child processes in Developer options.
Build
Run tools/build_local.sh with Docker, Java 17, the Android SDK/NDK, and zstd installed. It builds the ARM64 audio sinks from PulseAudio 13.0 and packages them into the APK at app/build/outputs/apk/release/app-release.apk. Set DROIDDECK_PA13_SOURCE_DIR to an existing PulseAudio 13.0 source directory to skip downloading it. To install the APK on an attached device, run tools/deploy_local.sh.
Limits
Compatibility and performance vary by device; hardware validation is limited. Desktop compositing uses software rendering. Firefox sandboxing is reduced under proot. See the session logs in Download/DroidDeck/ when diagnosing problems.
Credits and licence
GPL-3.0. Runtime, shim, input, and controller work build on WinNative and Bannerlator (maxjivi05). See LICENSE. Steam and Proton belong to Valve Corporation; this project is not affiliated with Valve.