Google authenticator tool for backend development / automation
npm install google-authenticator-utilhttp://mydomain/oauth2callback (Recommended is http://localhost:port/oauth2callback) And type of Web application
const authenticator = new GoogleAuthenticator({
clientId: 'your client ID',
clientSecret: 'your client secret'
});
`
$3
In the first time, you don't have a token at all and you will to verify the auth URL using a browser.
The following code will do it for you:
`
const oAuth2 = authenticator.authorizeWithNewToken({
scope: ['scope 1', 'scope 2'],
username: 'your email address username (before the @)',
password: 'your email address password'
});
`
After the first execution of the code, the token will be generated in tokens folder by default and with a name of your-client-id-token.json.
After the token is generated, it is recommended to remove the username and password parameters, they are no longer necessary.
How to reuse your token
After first token generation, you can re-use your token in the ways.
$3
After first token was generated, you no longer need to pass the username and password parameters.
Your code should look like:
`
const oAuth2 = authenticator.authorizeWithTokenFile({
name: 'my-token-file',
directory: './my-token-directory'
});
//Final token path would be: ./my-token-directory/my-token-file.json
`
$3
If you don't want to store a token file, you can always re-use the existing token as a JS object inside the code:
`
const oAuth2 = authenticator.authorizeWithToken({
access_token: 'your access token',
refresh_token: 'your refresh token',
scope: ['scope 1', 'scope 2'],
token_type: 'the type of the token',
expiry_date: 1315241515
});
`
Now you can remove the generated token file and keep authenticating.
oAuth2 Client
The strong point of this module, is it's pre-build easy to use oAuth2 client.
To get a built oAuth2 Client without knowing too much, do the following in your code:
`
const authenticator = new GoogleAuthenticator({
clientId: 'your client ID',
clientSecret: 'your client secret'
});
//I'm using the authorizeWithNewToken function, but this can also done with the authorizeWithTokenFile and authorizeWithToken functions, explained above.
const oAuth2 = authenticator.authorizeWithNewToken({
scope: ['scope 1', 'scope 2'],
username: 'your email address username (before the @)',
password: 'your email address password'
});
`
Now the oAuth2 variable holds the oAuth2 object you need.
Google Mail Client
You can use the GMAIL Client used in the module, in order to perform your async actions:
`
const authenticator = new GoogleAuthenticator({
clientId: 'your client ID',
clientSecret: 'your client secret'
});
//I'm using the authorizeWithNewToken function, but this can also done with the authorizeWithTokenFile and authorizeWithToken functions, explained above.
const oAuth2 = authenticator.authorizeWithNewToken({
scope: ['scope 1', 'scope 2'],
username: 'your email address username (before the @)',
password: 'your email address password'
});
const messages = await authenticator.gmailAPI.users.messages.list({
userId: 'me',
labelIds: ['UNREAD'],
auth: oAuth2,
q: 'subject: my-email-title'
});
`
Or you can use the original gmail client:
`
const gmail = google.gmail('v1');
const messages = await gmail.users.messages.list({
userId: 'me',
labelIds: ['UNREAD'],
auth: oAuth2,
q: 'subject: my-email-title'
});
``