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https://github.com/OpenIDC/liboauth2
OAuth 2.x and OpenID Connect C library
https://github.com/OpenIDC/liboauth2
c oauth oauth2 openid-connect
Last synced: 3 days ago
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OAuth 2.x and OpenID Connect C library
- Host: GitHub
- URL: https://github.com/OpenIDC/liboauth2
- Owner: OpenIDC
- License: apache-2.0
- Created: 2019-03-22T14:03:06.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2025-01-30T11:16:06.000Z (3 days ago)
- Last Synced: 2025-01-30T11:19:35.634Z (3 days ago)
- Topics: c, oauth, oauth2, openid-connect
- Language: C
- Homepage:
- Size: 755 KB
- Stars: 107
- Watchers: 5
- Forks: 26
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- Changelog: ChangeLog
- License: LICENSE
- Authors: AUTHORS
Awesome Lists containing this project
README
[](https://github.com/OpenIDC/liboauth2/actions/workflows/build.yml)
[](https://github.com/OpenIDC/liboauth2/actions/workflows/archs.yml)
[](https://github.com/OpenIDC/liboauth2/actions/workflows/codeql-analysis.yml)
# liboauth2
Generic library to build C-based OAuth 2.x and OpenID Connect servers and clients e.g. web-server plugins.
## Overview
- extends [cjose](https://github.com/OpenIDC/cjose) into OAuth 2.x and OpenID Connect specific claims, secrets, and hashes
- adds OAuth 2.x and OpenID Connect protocols by abstracting HTTP requests and responses from web server implementation specifics
- reusable code across other OAuth 2.x and REST related protocols
e.g. token exchange with endpoint authentication, source token retrieval, target pass settings etc.
- generic code with plugins for Apache, NGINX, and possibly more (e.g. Envoy, HA Proxy, IIS)
- configurable cache backend/size/options per cache element type
- cookie-based session management (i.e. enforce inactivity timeout, expiry)
## Features
- [OpenID Connect 1.0](https://openid.net/specs/openid-connect-core-1_0.html)
- OAuth 2.0 Resource Owner Password Credentials ([RFC 6749](https://tools.ietf.org/html/rfc6749#section-4.3))
- OAuth 2.0 Token Introspection ([RFC 7662](https://tools.ietf.org/html/rfc7662))
- JWT bearer token validation using JWK, JWKS URI, shared symmetric key, X.509 cert, and RSA public key ([RFC 6750](https://tools.ietf.org/html/rfc6750))
- OAuth 2.0 Authorization Server Metadata ([RFC 8414](https://tools.ietf.org/html/rfc8414))
- Proof Key for Code Exchange (PKCE) by OAuth Public Clients ([RFC 7636](https://tools.ietf.org/html/rfc7636))
- OAuth 2.0 Mutual-TLS (MTLS) Certificate-Bound Access Tokens ([RFC 8705](https://tools.ietf.org/html/rfc8705))
- OAuth 2.0 Demonstrating Proof of Possession (DPoP) ([RFC9449](https://tools.ietf.org/html/rfc9449))
- Amazon ALB [EC key URL based `x-amzn-oidc-data` JWT verification](https://docs.aws.amazon.com/elasticloadbalancing/latest/application/listener-authenticate-users.html)
- endpoint authentication methods: `client_secret_basic`, `client_secret_post`, [`client_secret_jwt`, `private_key_jwt`](https://tools.ietf.org/html/rfc7523), [TLS client certificate](https://tools.ietf.org/id/draft-ietf-oauth-mtls), and HTTP basic authentication
- configurable cache backends: shared memory, file-based, memcache, and Redis
- retrieving a token from a header, a query parameter, a post parameter, or a cookie
- setting a token as a header, a query parameter, a post parameter, or a cookie
- Apache and NGINX bindings
## Dependencies
liboauth2 depends on the following libraries:
- [`openssl`](https://www.openssl.org/) for SSL and crypto support
- [`libcurl`](https://curl.haxx.se/libcurl/) for HTTP client support
- [`jansson`](http://www.digip.org/jansson/) for JSON parsing
- [`cjose`](https://github.com/OpenIDC/cjose) for JSON Object Signing and Encryption (JOSE) support
- (optional) [`libmemcached`](https://libmemcached.org) for memcache cache backend support
- (optional) [`libhiredis`](https://github.com/redis/hiredis) for Redis cache backend support
- (optional) [`Apache 2.x`](https://httpd.apache.org/) for Apache 2.x bindings support
- (optional) [`NGINX`](https://nginx.org) for NGINX bindings support
- (optional, build time only) [`check`](https://libcheck.github.io/check/) for unit test support
## Support
### Community Support
See [Frequently Asked Questions](https://github.com/OpenIDC/liboauth2/wiki) on the Wiki.
Ask questions in the [Discussions](https://github.com/OpenIDC/liboauth2/discussions) tracker.
### Commercial Support
For commercial support contracts, professional services, training, and use-case specific support, contact [OpenIDC](https://www.openidc.com) at:
[[email protected]](mailto:[email protected])
Disclaimer
----------
*This software is open sourced by OpenIDC. For commercial support
you can contact [OpenIDC](https://www.openidc.com) as described above in the [Support](#support) section.*