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Introduction

In this android app, you can develop your own android vpn client. The project is based up on https://github.com/schwabe/ics-openvpn.

This repository contains the files related to the app. The master branch contains the app's source code (the code the app's developers edit).

The remainder of this document contains how to deploy the app on production and configuring the source code.

Develop

# Follow https://github.com/gayanvoice on GitHub

#1 Select checkout project from version control

#2 Enter the link of the repository and select project folder

#3 Click Yes to open the repositoy on the project

#4 Build started

#5 Build finished

Deploy

• Before deploying your app, please remove the google-services.json file from your app. google-services.json

Install OpenVPN server for multiple users by few steps. Go to this repository and clone. Run the script OpenVPN Install for Multiple Users

Remote config

App details

Load the details of the app from the following link app details. Go to appdetails.json.

File details

Load the OpenVPN files from the following link file details. Go to filedetails.json.

Configure appdetails.json

{
  "ads":"true",
  "update":[{
    "version":"2.8.1600",
    "title":"This app is now Open Source",
    "description":"The App is available at github.com/gayankuruppu/android-vpn-client-ics-openvpn",
    "size":"https://git.io/JeY69"
  }],
  "blocked":[
    {"id":0, "app":"com.android.game"},
    {"id":1, "app":"com.utorrent.client"},
    {"id":2, "app":"com.torrent.client"},
    {"id":3, "app":"com.tor.client"},
    {"id":4, "app":"com.insta.client"},
    {"id":5, "app":"com.facebook.client"},
    {"id":6, "app":"com.get.client"}
  ],
  "free":[
    {"id":0, "file":0, "city":"Essen","country":"Germany","image":"germany","ip":"51.68.191.75","active":"true","signal":"a"},
    {"id":1, "file":0, "city":"Hamburg","country":"Germany","image":"germany","ip":"51.68.191.75","active":"true","signal":"b"},
    {"id":2, "file":1, "city":"Los Angeles CA","country":"United States","image":"unitedstates","ip":"205.185.119.100","active":"true","signal":"c"}
  ]
}

The appdetails.json file has four main parts.

• The value ads is a boolean value, you can choose true or false. If the value is true, the app will show ads when the session starts. Otherwise, ads will not show if the value is false.

• The array update has three values. version is a String value which is the latest version of the app. When the session starts the app check if the version value is equal to the version of the app. If the values do not match with each other the Update View will show. The values title, description, and size are the values display in the Update View.

• The array blocked has JSON objects with values id and package name. You can add apps such as Torrent to avoid the peer to peer file sharing which often misuse by downloading digital media.

• The array free has values of the server names. The value city displays the server name and the value image is the name of the flag. The value signal is the value of the strength of the signal. The value file is the index value of the source OVPN file in the filedetails.json.

• Change the JSON values and upload into your server or host it in the forked repository (https://raw.githubusercontent.com/gayanvoice/android-vpn-client-ics-openvpn/images/appdetails.json) and add the link of the JSON file in the WelcomeActivity.java file https://github.com/gayanvoice/android-vpn-client-ics-openvpn/blob/c35b88b40a8ba6aa382ca7324981511f4c6e886d/app/src/main/java/com/buzz/vpn/WelcomeActivity.java#L59

Configure filedetails.json

{
  "ovpn_file":[
    {"id":0,"file":"client
    dev tun
    proto udp
    ...
    d4ec4105a39c814bd980c9c0e0b8efb4
    -----END OpenVPN Static key V1-----
    </tls-auth>"},
    {"id":1,"file":""}]
}

• The filedetails.json file stores the OpenVPN source file which is a String value to set up teh internet connection.
• Copy the text in the OVPN file and paste it in the JSON String (https://raw.githubusercontent.com/gayanvoice/android-vpn-client-ics-openvpn/images/filedetails.json)
• Add the link address in the WelcomeActivity.java https://github.com/gayanvoice/android-vpn-client-ics-openvpn/blob/c35b88b40a8ba6aa382ca7324981511f4c6e886d/app/src/main/java/com/buzz/vpn/WelcomeActivity.java#L60

Run the app

• That is all. Now to can change the app UI and deploy the app.
• Remove the Google Services JSON file before deploying (https://github.com/gayankuruppu/android-vpn-client-ics-openvpn/blob/master/app/google-services.json) Github https://github.com/gayanvoice/android-vpn-client-ics-openvpn

References

1. OpenVPN for Android - GitHub
2. Develop a VPN App in Java using Android Studio - Medium