osincli's Introduction

OSIN CLIENT

Golang OAuth2 client library

OSINCLI is an OAuth2 client library for the Go language, as specified at http://tools.ietf.org/html/rfc6749.

Using it, you can access an OAuth2 authenticated service.

The library follows the RFC recommendations, but allows some differences, like passing the client secret in the url instead of using the Authorization header.

Example

import "github.com/RangelReale/osincli"

config := &osincli.ClientConfig{
	ClientId:                 "xxxxxxxxxxxx.apps.googleusercontent.com",
	ClientSecret:             "secret",
	AuthorizeUrl:             "https://accounts.google.com/o/oauth2/auth",
	TokenUrl:                 "https://accounts.google.com/o/oauth2/token",
	RedirectUrl:              "http://localhost:14001/appauth",
	ErrorsInStatusCode:       true,
	SendClientSecretInParams: true,
	Scope: "https://www.googleapis.com/auth/plus.login",
}
client, err := osincli.NewClient(config)
if err != nil {
	panic(err)
}

// create a new request to generate the url
areq := client.NewAuthorizeRequest(osincli.CODE)
areq.CustomParameters["access_type"] = "online"
areq.CustomParameters["approval_prompt"] = "auto"

// Home
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
	u := areq.GetAuthorizeUrl()
	w.Write([]byte(fmt.Sprintf("<a href=\"%s\">Login</a>", u.String())))
})

// Auth endpoint
http.HandleFunc("/appauth", func(w http.ResponseWriter, r *http.Request) {
	// parse a token request
	if areqdata, err := areq.HandleRequest(r); err == nil {
		treq := client.NewAccessRequest(osincli.AUTHORIZATION_CODE, areqdata)

		// exchange the authorize token for the access token
		ad, err := treq.GetToken()
		if err == nil {
			w.Write([]byte(fmt.Sprintf("Access token: %+v\n\n", ad)))
			
			// use the token in ad.AccessToken
		} else {
			w.Write([]byte(fmt.Sprintf("ERROR: %s\n", err)))
		}
	} else {
		w.Write([]byte(fmt.Sprintf("ERROR: %s\n", err)))
	}
})

http.ListenAndServe(":14001", nil)

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