func Example_jWT() {
opts, err := oauth2.New(
// The contents of your RSA private key or your PEM file
// that contains a private key.
// If you have a p12 file instead, you
// can use `openssl` to export the private key into a pem file.
//
// $ openssl pkcs12 -in key.p12 -out key.pem -nodes
//
// It only supports PEM containers with no passphrase.
oauth2.JWTClient(
"*****@*****.**",
[]byte("-----BEGIN RSA PRIVATE KEY-----...")),
oauth2.Scope("SCOPE1", "SCOPE2"),
oauth2.JWTEndpoint("https://provider.com/o/oauth2/token"),
// If you would like to impersonate a user, you can
// create a transport with a subject. The following GET
// request will be made on the behalf of [email protected].
// Subject is optional.
oauth2.Subject("*****@*****.**"),
)
if err != nil {
log.Fatal(err)
}
// Initiate an http.Client, the following GET request will be
// authorized and authenticated on the behalf of [email protected].
client := http.Client{Transport: opts.NewTransport()}
client.Get("...")
}
func Example_regular() {
opts, err := oauth2.New(
oauth2.Client("YOUR_CLIENT_ID", "YOUR_CLIENT_SECRET"),
oauth2.RedirectURL("YOUR_REDIRECT_URL"),
oauth2.Scope("SCOPE1", "SCOPE2"),
oauth2.Endpoint(
"https://provider.com/o/oauth2/auth",
"https://provider.com/o/oauth2/token",
),
)
if err != nil {
log.Fatal(err)
}
// Redirect user to consent page to ask for permission
// for the scopes specified above.
url := opts.AuthCodeURL("state", "online", "auto")
fmt.Printf("Visit the URL for the auth dialog: %v", url)
// Use the authorization code that is pushed to the redirect URL.
// NewTransportWithCode will do the handshake to retrieve
// an access token and initiate a Transport that is
// authorized and authenticated by the retrieved token.
var code string
if _, err = fmt.Scan(&code); err != nil {
log.Fatal(err)
}
t, err := opts.NewTransportFromCode(code)
if err != nil {
log.Fatal(err)
}
// You can use t to initiate a new http.Client and
// start making authenticated requests.
client := http.Client{Transport: t}
client.Get("...")
}