How do I use yup-oauth2 with Google APIs in an async Rust project?

Use yup-oauth2 version 4 or 5 with the async-google-apis code generator for async stubs, but note that async-google-apis is still alpha, so it may be unstable. For synchronous projects, stick with older versions compatible with google-apis-rs.

yup-oauth2 vs oauth2-rs: which should I choose for OAuth in Rust?

yup-oauth2 is better for specific flows like device and service account, especially with Google APIs, while oauth2-rs might offer more generic or different features. Compare based on your provider support and required flows, as yup-oauth2 is Google-centric.

How to implement the installed application flow with yup-oauth2?

Check the examples directory in the repository; you'll need to configure the OAuth client, handle user redirects for code exchange, and use the token source to authenticate requests, similar to Google's installed app flow.

Does yup-oauth2 support authorization code flow with PKCE?

The README doesn't mention PKCE; it focuses on device, installed app, and service account flows. If you need PKCE, verify the crate's current features or consider alternative libraries, as it might not be implemented.

What are the differences between yup-oauth2 versions 4 and 5?

Version 4 is for Tokio 0.2/0.3, while version 5 is for Tokio 1.0, as per the README. Both are async, but version 5 updates runtime compatibility, so choose based on your Tokio version to avoid conflicts.

Is yup-oauth2 good for server-to-server authentication without a browser?

Yes, the service account flow is designed for non-interactive server-to-server communication using public key cryptography, ideal for cloud services like Google Cloud Storage, as described in the features.

Open-Awesome

yup-oauth2

Apache-2.0Rust

A Rust library implementing multiple OAuth 2.0 flows including Device, Installed, and Service Account authorization.

Visit Website GitHub

242 stars118 forks0 contributors

What is yup-oauth2?

yup-oauth2 is a Rust library that implements multiple OAuth 2.0 authorization flows, including Device, Installed Application, and Service Account flows. It provides token sources that yield HTTP Bearer tokens for authenticating API requests, originally designed for Google services but adaptable to other OAuth providers.

Target Audience

Rust developers building applications that need to authenticate with OAuth 2.0 providers, particularly those integrating with Google APIs or similar services requiring device, installed app, or service account authorization.

Value Proposition

Developers choose yup-oauth2 for its comprehensive support of multiple OAuth flows in a single Rust crate, its flexibility to work with raw HTTP requests or higher-level API clients, and its proven reliability through integration with projects like google-apis-rs.

Overview

An oauth2 client implementation providing the Device, Installed, Service Account, and several more flows.

Use Cases

Best For

Implementing OAuth 2.0 device flow in Rust applications
Authenticating installed desktop or mobile applications with OAuth providers
Setting up server-to-server communication using service account credentials
Building Rust clients for Google APIs that require OAuth authentication
Creating generic OAuth 2.0 clients that work with providers similar to Google
Managing Bearer token retrieval and refresh for HTTP API requests

Not Ideal For

Projects that depend on the synchronous google-apis-rs crate for Google API integration
Applications requiring OAuth 2.0 flows like implicit grant or PKCE that aren't explicitly mentioned in the README
Teams needing a stable, production-ready async solution for non-Google OAuth providers due to limited testing
Developers looking for a plug-and-play OAuth library with extensive, beginner-friendly documentation and minimal configuration

Pros & Cons

Pros

Comprehensive Flow Support

Implements device, installed application, and service account flows, covering key OAuth 2.0 scenarios for diverse application types, as highlighted in the README's features.

Provider Flexibility

Designed generically to work with any OAuth provider following Google-like patterns, though the README admits it's primarily tested with Google, offering adaptability.

Runtime Versatility

Offers multiple crate versions for different Hyper and Tokio runtimes (e.g., version 5 for Tokio 1.0), easing integration into various Rust projects.

Proven Integration

Originally developed for and integrated with google-apis-rs, indicating battle-tested reliability for Google API authentication in real-world use.

Cons

Breaking Compatibility

Version 4+ introduces async support but is incompatible with google-apis-rs, a major downstream project, forcing difficult migration choices for existing users.

Unstable Async Ecosystem

The recommended async-google-apis for new versions is alpha-quality, posing risks for production use in async Google API integrations, as noted in the README.

Limited Provider Testing

Admits being primarily tested with Google; other providers might require manual fixes or contributions, increasing setup complexity for non-Google use.

Version Fragmentation

Multiple versions for different runtimes (e.g., versions 1-5) can confuse users about which crate to use, especially with the shift from sync to async.

Frequently Asked Questions

Related Projects

jsonwebtoken

JWT lib in rust

Stars2,075

Forks351

Last commit11 days ago

oauth2

Extensible, strongly-typed Rust OAuth2 client library

Stars1,198

Forks206

Last commit5 months ago

oxide-auth

A OAuth2 server library, for use in combination with actix or other frontends, featuring a set of configurable and pluggable backends.

Stars781

Forks101