Chaoxi Weng a8542508b7
Refa: Deprecate /github_callback in favor of /oauth/callback/<channel> for GitHub OAuth integration (#7587)
### What problem does this PR solve?

Deprecate `/github_callback` route in favor of
`/oauth/callback/<channel>` for GitHub OAuth integration:

- Added GitHub OAuth support in the authentication module
- Introduced `GithubOAuthClient` with methods to fetch and normalize
user info
  - Updated `CLIENT_TYPES` to include GitHub OAuth client
- Deprecated `/github_callback` route and suggested using the generic
`/oauth/callback/<channel>` route

---
- Related pull requests: 
  - #7379
  - #7553 

### Usage

- [Create a GitHub OAuth
App](https://github.com/settings/applications/new) to obtain the
`client_id` and `client_secret`, configure the authorization callback
url: `https://your-app.com/v1/user/oauth/callback/github`
- Edit `service_conf.yaml.template`:
  ```yaml
  # ...
  oauth:
    github:
      type: "github"
      icon: "github"
      display_name: "Github"
      client_id: "your_client_id"
      client_secret: "your_client_secret"
      redirect_uri: "https://your-app.com/v1/user/oauth/callback/github"
  # ...
  ```

### Type of change

- [x] Documentation Update
- [x] Refactoring (non-breaking change)
2025-05-15 14:39:37 +08:00
..

Auth

The Auth module provides implementations of OAuth2 and OpenID Connect (OIDC) authentication for integration with third-party identity providers.

Features

  • Supports both OAuth2 and OIDC authentication protocols
  • Automatic OIDC configuration discovery (via /.well-known/openid-configuration)
  • JWT token validation
  • Unified user information handling

Usage

# OAuth2 configuration
oauth_config = {
    "type": "oauth2",
    "client_id": "your_client_id",
    "client_secret": "your_client_secret",
    "authorization_url": "https://provider.com/oauth/authorize",
    "token_url": "https://provider.com/oauth/token",
    "userinfo_url": "https://provider.com/oauth/userinfo",
    "redirect_uri": "https://your-app.com/v1/user/oauth/callback/<channel>"
}

# OIDC configuration
oidc_config = {
    "type": "oidc",
    "issuer": "https://provider.com/v1/oidc",
    "client_id": "your_client_id",
    "client_secret": "your_client_secret",
    "redirect_uri": "https://your-app.com/v1/user/oauth/callback/<channel>"
}

# Github OAuth configuration
github_config = {
    "type": "github"
    "client_id": "your_client_id",
    "client_secret": "your_client_secret",
    "redirect_uri": "https://your-app.com/v1/user/oauth/callback/<channel>"
}

# Get client instance
client = get_auth_client(oauth_config)

Authentication Flow

  1. Get authorization URL:
auth_url = client.get_authorization_url()
  1. After user authorization, exchange authorization code for token:
token_response = client.exchange_code_for_token(authorization_code)
access_token = token_response["access_token"]
  1. Fetch user information:
user_info = client.fetch_user_info(access_token)

User Information Structure

All authentication methods return user information following this structure:

{
    "email": "user@example.com",
    "username": "username",
    "nickname": "User Name",
    "avatar_url": "https://example.com/avatar.jpg"
}