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feat(proxy): add authenticated inbounds in clash/singbox/xray templates - #894

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Joursoir wants to merge 2 commits into
PasarGuard:devfrom
Joursoir:inbounds-auth
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Joursoir wants to merge 2 commits into
PasarGuard:devfrom
Joursoir:inbounds-auth

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@Joursoir

@Joursoir Joursoir commented Sep 12, 2026

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Summary

Adds per-user credentials for local SOCKS/HTTP proxy inbounds in generated subscriptions.

Russian VPN-detection guidance[3] reportedly includes probing publicly accessible SOCKS/HTTP proxies to discover their external IP address. Static credentials hardcoded in client templates therefore expose every user to the same probe. This change generates and persists unique credentials per user, backfills existing users through a migration, and substitutes them only into explicit empty placeholders in Xray, sing-box, and Mihomo/Clash templates.

Type of change

  • Bug fix
  • New feature
  • Breaking change
  • Refactor / cleanup
  • Documentation
  • Tests / CI

Checklist

  • I tested the change locally or explained why it cannot be tested.
  • I added or updated tests for behavior changes.
  • I updated documentation, translations, or examples if needed.
  • I checked database migrations when models or schema changed.
  • I did not include secrets, tokens, private keys, or unrelated changes.

Testing

Tested the whole flow on XRAY templates. sing-box and clash templates were statically validated via LLM.

Screenshots

N/A

Notes for reviewers

Credentials are injected only when templates contain intentionally empty credential placeholders, so existing non-placeholder template values remain unchanged.

Background and sources (in russian):

  1. https://habr.com/ru/articles/1020080
  2. https://habr.com/ru/articles/1022422/
  3. https://t.me/ruitunion/893
  4. https://publish.obsidian.md/zapret/VLESS-SOCKS5-vulnerability

Summary by CodeRabbit

  • New Features
    • Added general authentication settings with automatically generated username and password credentials.
    • Generated Clash, Sing-box, and Xray configurations now apply configured credentials to supported HTTP and SOCKS authentication placeholders.
    • Authentication settings are carried through subscription and proxy configuration generation.
  • Bug Fixes
    • Preserved templates without authentication placeholders when general authentication is not configured.
    • Improved handling of authentication credentials across supported configuration formats.

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Walkthrough

Adds persisted general authentication credentials and propagates them through subscription builders. Clash, Sing-box, and Xray templates now receive credentials for empty authentication placeholders.

Changes

General authentication

Layer / File(s) Summary
Credential storage and model
app/db/migrations/versions/..., app/models/proxy.py
The migration backfills missing general_auth credentials and removes them during downgrade. ProxyTable now exposes GeneralAuthSettings.
Settings propagation
app/subscription/base.py, app/subscription/links.py, app/subscription/share.py
Subscription constructors accept and forward general_auth from proxy settings, including temporary Xray configurations.
Clash and Sing-box rendering
app/subscription/clash.py, app/subscription/singbox.py
Rendered templates replace empty authentication placeholders with configured credentials.
Xray rendering
app/subscription/xray.py
Xray templates are deep-copied, configured, and passed as parsed JSON to add_config.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~30 minutes

Change: Feature

Sequence Diagram(s)

sequenceDiagram
  participant ProxyTable
  participant SubscriptionBuilder
  participant Configuration
  participant RenderedTemplate
  ProxyTable->>SubscriptionBuilder: provide general_auth
  SubscriptionBuilder->>Configuration: pass credentials
  Configuration->>RenderedTemplate: replace empty authentication placeholders
  RenderedTemplate-->>SubscriptionBuilder: return configured subscription
Loading

Suggested reviewers: immohammad20000

Merge Risk: 🟠 High · up to d393a

Xray subscription generation fails outright on the default template path, so affected users would receive errors instead of configurations. The accompanying credential backfill also loads every user row at once, which can stretch the upgrade window on large installations. Both should be addressed before merge.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 10.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 30 functions across 8 files. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly summarizes the main change: adding authenticated inbounds to Clash, sing-box, and Xray templates.
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
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❤️ Share

A rabbit hops where new credentials gleam
Templates wake from an empty stream
Clash and Sing-box set users right
Xray guards its inbounds through the night
Stored secrets make the configs bright

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Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents
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Inline comments:
In
`@app/db/migrations/versions/9f3b7c2a1d45_add_general_auth_settings_to_proxy_settings.py`:
- Line 30: Update both upgrade and downgrade backfills to process users with
bounded keyset batches instead of loading the full result set; execute each
batch’s updates before fetching the next batch, and avoid retaining a second
full collection in memory. Use the existing users_table identifiers and
proxy_settings fields while preserving the migration’s current transformations.

In `@app/subscription/xray.py`:
- Line 105: Update the imports used by XrayConfiguration.add() to include
deepcopy from Python’s copy module, so the template_content is None branch can
call deepcopy(self.template) without raising NameError.

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📥 Commits

Reviewing files that changed from the base of the PR and between 7d935c3 and d393a4d.

📒 Files selected for processing (8)
  • app/db/migrations/versions/9f3b7c2a1d45_add_general_auth_settings_to_proxy_settings.py
  • app/models/proxy.py
  • app/subscription/base.py
  • app/subscription/clash.py
  • app/subscription/links.py
  • app/subscription/share.py
  • app/subscription/singbox.py
  • app/subscription/xray.py

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Comment thread app/subscription/xray.py Outdated
@Joursoir

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@ImMohammad20000 hello! thanks you so much for working on this project. I'd love to make my contribution, I would be glad if you have time to take a look

@ImMohammad20000

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Having authorization in json for socks and http not a very good idea for end users some people use socks directly and adding auth to this process can be annoying

@Joursoir

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@ImMohammad20000 I see your point. That's the reason why this authorization is optional. We populate credentials only if certain fields of a config exist (the same mechanism is used to populate protocols creds into user's outbound)

You can also research links that I've linked to my PR. socks/https without authorization is actively checked by russian spy-apps to detect enabled VPN, so it's actually a security concern

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2 participants