// facebookHandler is a ContextHandler that gets the OAuth2 Token from the ctx
// to get the corresponding Facebook User. If successful, the user is added to
// the ctx and the success handler is called. Otherwise, the failure handler
// is called.
func facebookHandler(config *oauth2.Config, success, failure ctxh.ContextHandler) ctxh.ContextHandler {
if failure == nil {
failure = gologin.DefaultFailureHandler
}
fn := func(ctx context.Context, w http.ResponseWriter, req *http.Request) {
token, err := oauth2Login.TokenFromContext(ctx)
if err != nil {
ctx = gologin.WithError(ctx, err)
failure.ServeHTTP(ctx, w, req)
return
}
httpClient := config.Client(ctx, token)
facebookService := newClient(httpClient)
user, resp, err := facebookService.Me()
err = validateResponse(user, resp, err)
if err != nil {
ctx = gologin.WithError(ctx, err)
failure.ServeHTTP(ctx, w, req)
return
}
ctx = WithUser(ctx, user)
success.ServeHTTP(ctx, w, req)
}
return ctxh.ContextHandlerFunc(fn)
}
// googleHandler is a ContextHandler that gets the OAuth2 Token from the ctx
// to get the corresponding Google Userinfoplus. If successful, the user info
// is added to the ctx and the success handler is called. Otherwise, the
// failure handler is called.
func googleHandler(config *oauth2.Config, success, failure ctxh.ContextHandler) ctxh.ContextHandler {
if failure == nil {
failure = gologin.DefaultFailureHandler
}
fn := func(ctx context.Context, w http.ResponseWriter, req *http.Request) {
token, err := oauth2Login.TokenFromContext(ctx)
if err != nil {
ctx = gologin.WithError(ctx, err)
failure.ServeHTTP(ctx, w, req)
return
}
httpClient := config.Client(ctx, token)
googleService, err := google.New(httpClient)
if err != nil {
ctx = gologin.WithError(ctx, err)
failure.ServeHTTP(ctx, w, req)
return
}
userInfoPlus, err := googleService.Userinfo.Get().Do()
err = validateResponse(userInfoPlus, err)
if err != nil {
ctx = gologin.WithError(ctx, err)
failure.ServeHTTP(ctx, w, req)
return
}
ctx = WithUser(ctx, userInfoPlus)
success.ServeHTTP(ctx, w, req)
}
return ctxh.ContextHandlerFunc(fn)
}