// Authorize handles authentication with thrid party remote systems,
// such as github or bitbucket, and returns user data.
func (r *Gitlab) Authorize(res http.ResponseWriter, req *http.Request) (*model.Login, error) {
host := httputil.GetURL(req)
config := NewOauthConfig(r, host)
var code = req.FormValue("code")
var state = req.FormValue("state")
if len(code) == 0 {
var random = GetRandom()
httputil.SetCookie(res, req, "gitlab_state", random)
http.Redirect(res, req, config.AuthCodeURL(random), http.StatusSeeOther)
return nil, nil
}
cookieState := httputil.GetCookie(req, "gitlab_state")
httputil.DelCookie(res, req, "gitlab_state")
if cookieState != state {
return nil, fmt.Errorf("Error matching state in OAuth2 redirect")
}
var trans = &oauth.Transport{
Config: config,
Transport: &http.Transport{
Proxy: http.ProxyFromEnvironment,
TLSClientConfig: &tls.Config{InsecureSkipVerify: r.SkipVerify},
},
}
var token, err = trans.Exchange(code)
if err != nil {
return nil, fmt.Errorf("Error exchanging token. %s", err)
}
var client = NewClient(r.url, token.AccessToken, r.SkipVerify)
var user, errr = client.CurrentUser()
if errr != nil {
return nil, fmt.Errorf("Error retrieving current user. %s", errr)
}
var login = new(model.Login)
login.ID = int64(user.Id)
login.Access = token.AccessToken
login.Secret = token.RefreshToken
login.Login = user.Username
login.Email = user.Email
return login, nil
}
