aTalk (Jabber / XMPP)

an encrypted instant messaging with video call and GPS features for android

Features

aTalk is an xmpp client designed for android and supports the following features:

Instant messaging in plain text and End-to-End encryption with OMEMO or OTR
SSL Certificate authentication, DNSSEC and DANE Security implementation for enhanced secure Connection Establishment
OMEMO encryption in group chat session enhancing privacy and security
OMEMO Media File Sharing for all files including Stickers, Bitmoji and Emoji rich contents
Support http file upload for file sharing with offline contact and in group chat
Support Stickers, Bitmoji and Emoji rich content sharing via Google Gboard
Send and receive files for all document types and images with thumbnail preview and gif animation
Auto accept file transfer with max file size option
Implement fault-tolerance file transfer algorithm, via Jingle File Transfer, Legacy In-Band/SOCK5 Bytestreams and HttpFileUpload protocols to ease and enhance file sharing reliability
Enhance and harmonize UI for file sharing in chat and chatRoom
Support share, quote and forward of messages and media with previews prior to sending
Support multi-instances of audio media player with functions: Play, Pause, Resume, Stop and Seek
Support unread message badges in contact and chatRoom list views
User selectable option for heads-up notification and quite hours
Share of social media links are tagged with thumbnail and title
Support Text to Speech and speech recognition UI with enable option per chat session (contact and group chat)
XEP-0012: Last Activity time associated with contacts
XEP-0048: Bookmarks for conference room and autoJoin on login
XEP-0070: Verifying HTTP Requests via XMPP entity for user authentication without password entry
XEP-0071: XHTML-IM Support chat messages containing lightweight text markup
XEP-0085: Chat State Notifications
XEP-0124: Bidirectional-streams Over Synchronous HTTP (BOSH) with Proxy support
XEP-0178: Use of SASL EXTERNAL with TLS Certificates for client authentication
XEP-0184: Message Delivery Receipts with user enable/disable option
XEP-0215: External Service Discovery
XEP-0251: Jingle Session Transfer: Support both Unattended and Attended call transfer
XEP-0313: Message Archive Management
XEP-0391: Jingle Encrypted Transports for OMEMO encrypted media file sharing
Implement call waiting to accept a second incoming call by placing the in-progress call on hold; and allow switching between calls
Implement Jabber VoIP-PBX gateway Telephony, allowing PBX phone call via service gateway
Join or create room with full room configuration support for owner
Integrated captcha protected room user interface with retry on failure
Support both voice and video call with ZRTP, SDES and DTLS SRTP encryption modes
ZRTP crypto algorithms uses SHA-2 384, 256bit ciphers AES256 & TWOFISH-256, enabling elliptic with Curve 25519
SDES encryption with AES256 and AES192, acceleration using OpenSSL
Support simultaneous media call and message chat sessions
Unique GPS-Location implementation as standalone tool, send locations to your desired buddy for real-time tracking or playback animation
A 360° street view of your current location use for self-guided tour. The street view tracks and follows your direction of sight
Built-in demo for GPS-Location features
Integrated photo editor with zooming and cropping, user can update the avatar with ease
Last message correction, message carbons and offline messages (OMEMO)
Stream Management and mobile network ping interval self-tune optimization support
In-Band Registration with captcha option support
Multiple accounts creation
User selectable Themes support
Multi-language UI support (Bahasa Indonesia, Chinese Simplified, English, German, Portuguese (Brazil), Russian, Slovak and Spanish)

XMPP Standards Implemented

aTalk works seamlessly with almost every XMPP servers available on network, limited only by servers features supported.
It supports the following XEP’s, standards for XMPP clients.

Acknowledgements

Libraries used in this project:

Other contributors:

Others

Documentation

aTalk apk build for android

Following development environment setups are used to build aTalk.apk
a. Android Studio Hedgehog | 2023.1.1 Patch
b. distributionUrl=https://services.gradle.org/distributions/gradle-8.5-bin.zip c. classpath ‘com.android.tools.build:gradle:8.2.2’ d. Ubuntu 22.04 with proper environment setup for development
Note: all shell scripts in aTalk are written to run on linux OS only e.g. Ubuntu
aTalk uses native jni libraries, required to be built manually or downloaded prior to android NDK build.
The static jni libraries must be built prior to android studio apk build process.
You must run the gradle task ‘initJniLibs’ to build all the jni libraries used in aTalk.
See aTalk/jni/static_library_build directory readme files for more information
on linux environment setup, and the execution of jni libraries build scripts.
You must run the gradle task ‘getJniLibs’ to fetch the jni libraries prior to android ndk build process.
These libraries sources include: opus, speex and ogg

Feedback and Contributions

If you can’t find your language in UI and would like to help then translate the app on https://toolate.othing.xyz/projects/atalk/. Or copy the strings.xml to values-LOCALE where the LOCALE is language-COUNTRY e.g. pt-rBR. Then create a pull request or forward the file to the developer.

If you have found bug, wish for new feature, or have other questions, file an issue.

License

aTalk, android VoIP and Instant Messaging client

Copyright 2014-2022 Eng Chong Meng
    
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.