Unofficial Java client library for Google Play Services OAuth

Simple library that can be used to get access some non-public Google APIs as an Android Device.

Table of content

• General info
  • Receiving an authentication token
  • Types of tokens
• Download
• Simple example
• Report Issues
• Contributing
• License

General info

Receiving an authentication token

To get a master token, firstly you need to receive an authentication token. In a nutshell, you just need to obtain the value of the oauth_token cookie after logging in to your Google account via https://accounts.google.com/EmbeddedSetup

Detailed instructions are provided below (I use Google Chrome, but I think the actions are similar in other browsers):

First way

1. Go here, log in to your Google account and agree to the terms
   
   

2. Find the lock
   
   

3. Go to the Cookies section
   
   

4. Expand the accounts.google.com dropdown menu
   
   

5. Find the oauth_token inside the Cookies menu and copy the token from the Content field
   
   

Second way

1. Go here, log in to your Google account and agree to the terms
   
   

2. Open Developer tools

3. Go to the Application section and look for https://accounts.google.com inside Cookies dropdown menu
   
   

4. Expand the accounts.google.com dropdown menu, find the oauth_token and copy the Cookie value
   
   

Types of tokens

• Authentication token (starts with oauth2_4/) expires quickly, can be used only once
• Master token (starts with aas_et/) never expires
• Access token (starts with ya29.) expires in 1 hour

Download

Available here

Maven

<dependency>
    <groupId>io.github.rukins</groupId>
    <artifactId>gpsoauth</artifactId>
</dependency>

Gradle

implementation group: 'io.github.rukins', name: 'gpsoauth'

Gradle (Kotlin)

implementation("io.github.rukins:gpsoauth")

Simple example

import io.github.rukins.gpsoauth.Auth;
import io.github.rukins.gpsoauth.exception.AuthError;
import io.github.rukins.gpsoauth.model.MasterToken;
import io.github.rukins.gpsoauth.model.MasterTokenRequestParams;

public class Main {
  public static void main(String[] args) {
    Auth auth = new Auth();

    MasterTokenRequestParams masterTokenRequestParams = MasterTokenRequestParams
            .withDefaultValues()
            .token("oauth2_4/***")
            .build();

    MasterToken masterToken;
    try {
      masterToken = auth.getMasterToken(masterTokenRequestParams);
    } catch (AuthError e) {
      System.out.println(e.getErrorObject());

      return;
    }

    AccessTokenRequestParams accessTokenRequestParams = AccessTokenRequestParams
            .withDefaultValues()
            .masterToken(masterToken.getMasterToken())
            .app("com.google.android.keep")
            .scopes("oauth2:https://www.googleapis.com/auth/memento https://www.googleapis.com/auth/reminders")
            .build();

    AccessToken accessToken;
    try {
      accessToken = auth.getAccessToken(accessTokenRequestParams);
    } catch (AuthError e) {
      System.out.println(e.getErrorObject());

      return;
    }

    System.out.println(masterToken.getMasterToken());
    System.out.println(accessToken.getAccessToken());
  }
}

And for example, request notes with an access token:

curl -i -X GET -H "Authorization: OAuth ya29.***" "https://www.googleapis.com/notes/v1/changes"

Report Issues

In the Issues section you can suggest any improvements and report any bugs you find

Contributing

This is an open-source project and all contributions are highly welcomed

License

Released under MIT License