Telegram client based on official Android sources

Last update: Dec 25, 2022

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Overview

Telegram messenger for Android

Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free. This repo contains the official source code for Telegram App for Android.

Creating your Telegram Application

We welcome all developers to use our API and source code to create applications on our platform. There are several things we require from all developers for the moment.

Obtain your own api_id for your application.
Please do not use the name Telegram for your app — or make sure your users understand that it is unofficial.
Kindly do not use our standard logo (white paper plane in a blue circle) as your app's logo.
Please study our security guidelines and take good care of your users' data and privacy.
Please remember to publish your code too in order to comply with the licences.

API, Protocol documentation

Telegram API manuals: https://core.telegram.org/api

MTproto protocol manuals: https://core.telegram.org/mtproto

Compilation Guide

Note: In order to support reproducible builds, this repo contains dummy release.keystore, google-services.json and filled variables inside BuildVars.java. Before publishing your own APKs please make sure to replace all these files with your own.

You will require Android Studio 3.4, Android NDK rev. 20 and Android SDK 8.1

Download the Telegram source code from https://github.com/DrKLO/Telegram ( git clone https://github.com/DrKLO/Telegram.git )
Copy your release.keystore into TMessagesProj/config
Fill out RELEASE_KEY_PASSWORD, RELEASE_KEY_ALIAS, RELEASE_STORE_PASSWORD in gradle.properties to access your release.keystore
Go to https://console.firebase.google.com/, create two android apps with application IDs org.telegram.messenger and org.telegram.messenger.beta, turn on firebase messaging and download google-services.json, which should be copied to the same folder as TMessagesProj.
Open the project in the Studio (note that it should be opened, NOT imported).
Fill out values in TMessagesProj/src/main/java/org/telegram/messenger/BuildVars.java – there’s a link for each of the variables showing where and which data to obtain.
You are ready to compile Telegram.

Localization

We moved all translations to https://translations.telegram.org/en/android/. Please use it.

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Comments

CVE-2007-4559 Patch

Patching CVE-2007-4559

Hi, we are security researchers from the Advanced Research Center at Trellix. We have began a campaign to patch a widespread bug named CVE-2007-4559. CVE-2007-4559 is a 15 year old bug in the Python tarfile package. By using extract() or extractall() on a tarfile object without sanitizing input, a maliciously crafted .tar file could perform a directory path traversal attack. We found at least one unsantized extractall() in your codebase and are providing a patch for you via pull request. The patch essentially checks to see if all tarfile members will be extracted safely and throws an exception otherwise. We encourage you to use this patch or your own solution to secure against CVE-2007-4559. Further technical information about the vulnerability can be found in this blog.

If you have further questions you may contact us through this projects lead researcher Kasimir Schulz.

opened by TrellixVulnTeam 0