RobotAutomationDevelopment-Dept/Ubisam-MobileGit
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Ubisam-MobileGit/tasks/066-download-page-and-update-check.md
choiminyeong 85352d3a1c TASK-070: remove the old download page's publishing script 
The old GitHub site is no longer used; releases and the version file
live on the apk branch of the team's Gitea.

Agent: main (opus)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-12 14:22:28 +09:00

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TASK-066: download page and in-app update check

Status: done; superseded by TASK-070 (the page and its publishing script are no longer used) Owner: Claude Reviewer: human product owner

Request

The human product owner asked for a web link to download the app, protected by a download password they chose, and for the app to offer the newest version when it is not on it. They chose to host it in a folder of the existing choimy0204.github.io site.

Acceptance criteria

  • https://choimy0204.github.io/ubgitea/ serves a page that asks for the password and only then gives the APK. The APK on the host is encrypted (AES-256-GCM, key from PBKDF2-SHA256), so its address alone gives nothing. The password is not in this repository.
  • version.json beside it names the newest versionCode, versionName and notes.
  • The app reads it once at launch; when it is newer than the installed build, a dialog offers the download page. Settings shows the installed version, a check button, and the download page when something newer is out. No Gitea token is sent to that host.
  • tools/publish-download.py builds the page from an APK; versionCode is raised for every build published.

Writable paths

app/build.gradle.kts, app/src/main/java/com/ubisam/ubgitea/core/update/, MainActivity.kt, feature/settings/SettingsScreen.kt, res/values/strings_update.xml, app/src/test/.../core/update/, tools/publish-download.py, docs/development-log.md, this file.

Checks

./gradlew compileDebugKotlin compileDebugUnitTestKotlin testDebugUnitTest assembleDebug lintDebug

Evidence

  • 2026-10-07: the required checks pass; 468 unit tests, 0 failures; lint 0 errors.
  • The page's decryption was run with Node's WebCrypto (the browser's API): the right password gives a file byte-identical to app-debug.apk, a wrong one is refused.
  • Published version 0.2.0 (versionCode 2), the debug build, to choimy0204.github.io/ubgitea/.
  • Not seen: the page opened on a phone, the install over an existing copy, the in-app dialog.

Review findings

  • 2026-10-07, product owner: a wrong password still downloaded. In a desktop browser a wrong password got nothing, but the page fetched the encrypted APK before checking the password, and a phone browser can keep that fetch as a download (still encrypted, not installable). The page now opens a small sealed check with the password first and fetches nothing when it is wrong; tried in the browser: a wrong password made no request, the right one downloaded.