ankidroid/Anki-Android

[BUG]: Restricting cleartext network traffic breaks import and statistics pages

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#15,991 opened on Mar 25, 2024

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 (4 comments) (0 reactions) (0 assignees)Kotlin (2,789 forks)batch import
BugHelp WantedKeep OpenPriority-Medium

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Description

Checked for duplicates?

  • This issue is not a duplicate

Does it also happen in the desktop version?

  • This bug does not occur in the latest version of Anki

What are the steps to reproduce this bug?

Restrict cleartext network traffic globally on your device (which blocks all non-TLS traffic). Open Ankidroid and try importing a deck from a local file or visit statistics page.

Expected behaviour

The import page (after choosing a local deck package file) and statistics page should be accessible

Actual behaviour

A blank page with "TypeError: failed to fetch" message is shown instead of import page and statistics page.

Debug info

AnkiDroid Version = 2.17.6 (568538896be943818ca793dd2635822265712def)

Backend Version = 0.1.34-anki23.12.1 (23.12.1 1a1d4d5419c6b57ef3baf99c9d2d9cf85d36ae0a)

Android Version = 14 (SDK 34)

ProductFlavor = full

Manufacturer = Fairphone

Model = FP5

Hardware = qcom

Webview User Agent = Mozilla/5.0 (Linux; Android 14; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/122.0.6261.90 Mobile Safari/537.36

ACRA UUID = 7a8bdf5f-c6c6-4679-b2fd-0ae240e97685

Crash Reports Enabled = true

(Optional) Anything else you want to share?

No response

Research

  • I am reporting a bug specific to AnkiDroid (Android app)
  • I have checked the manual and the FAQ and could not find a solution to my issue
  • (Optional) I have confirmed the issue is not resolved in the latest alpha release (instructions)

Contributor guide

Research direction
Investigate how Android's cleartext traffic restriction affects WebView in AnkiDroid. Look for Network Security Configuration files and determine if cleartext traffic is needed for local file imports or statistics page. Consider adding a per domain cleartext exception or using a local server with TLS.
Tech stack
kotlinandroid
Domain
mobile
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Android developmentKotlin
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65