Facebook Authorization

1. Create Facebook App

• Visit Facebook developer center

• Enter my apps page, then click Create App button.

• Choice Authenticate and request data from users with Facebook Login.

• click Customize adding a Facebook Login button

• Go to settings

• Valid OAuth Redirect URIs

http://yoursite.com/oauth/facebook/callback

Get App ID and App secret

This APP ID and App secret as ClientId and ClientSecret

warning

Important Note

Client secrets can protect the security of your application, so please ensure that it is not leaked！ Also, do not share your client secrets with anyone！！！

2. Integration GAuth

• Install GAuth

go get github.com/LeoInnovateLab/gauth

• import register

import (
  _ "github.com/LeoInnovateLab/gauth/register"
)

• Create AuthRequest

authRequest, err := gauth.New().
		Source("facebook").
		ClientId("your_app_id").
		ClientSecret("your_app_secret").
		RedirectUrl("your_callback_url").
		Build()

• Generate Authorize URL

authorizeUrl, err := authRequest.Authorize(utils.CreateState())

You can use this authorizeUrl to redirect.

3. Authorization

Authorization result

{
  "data": {
    "uid": "1023042224000000",
    "username": "Leo",
    "nickname": "Leo",
    "avatar": "",
    "blog": "",
    "company": "",
    "location": "",
    "email": "",
    "remark": "",
    "gender": -1,
    "source": "facebook",
    "token": {
      "access_token": "EAAQTJktOwnEBO2I5kJLQdN0U12AvEnYZCI9XnsIoPSWtHqOWLOsBDC0O8yhQ42uqmGiBRkWIKotQMR2X2VmTSFkgXyHRFoYvintfUDiwLcGrn1WGPqxDsJZCe7MmhUj1nariBFvIJrEQol5C61ZAHYzIwTQgZBMaI1CS10U3f2ytOAFxg5XKd9IKc4NU1Q9ZCQQTm7168c8BfMj4mxcICjMiciNuoX",
      "expire_in": 5179833,
      "refresh_token": "",
      "refresh_token_expire_in": 0,
      "uid": "",
      "open_id": "",
      "access_code": "",
      "union_id": "",
      "scope": "",
      "token_type": "bearer",
      "id_token": "",
      "mac_algorithm": "",
      "mac_key": "",
      "code": "",
      "snapshot_user": false,
      "oauth_token": "",
      "oauth_token_secret": "",
      "user_id": "",
      "screen_name": "",
      "oauth_callback_confirmed": null
    },
    "raw_user_info": "{\"name\":\"Leo\",\"id\":\"1023042224000000\"}",
    "snapshot_user": false
  }
}

Demo

Recommend using GAuth Demo for testing.

• Clone https://github.com/LeoInnovateLab/gauth-demo.git

• Fill in the requested App Id and App secrets in .env.demo

• Then, Start project, visit http://localhost:8080/