LeapChat
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Ephemeral, encrypted, in-browser chat rooms.
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LeapChat is an ephemeral chat application. LeapChat uses miniLock for challenge/response-based authentication. This app also enables users to create chat rooms, invite others to said rooms (via a special URL with a passphrase at the end of it that is used to generate a miniLock keypair), and of course send (encrypted) messages to the other chat room participants.
All messages are encrypted end-to-end
The server cannot see anyone's usernames, which are encrypted and attached to each message
Users can "leap" from one room to the next so that if an adversary clicks on an old invite link, it cannot be used to join the room
(Feature coming soon!)
Very secure headers thanks to gosecure.
TODO (many more)
There is currently one public instance running at leapchat.org.
If you're on Linux or macOS and if don't already have
Go version 1.14 or newer installed
($ go version will tell you), you can install Go by running:
curl https://raw.githubusercontent.com/elimisteve/install-go/master/install-go.sh | bash
source ~/.bashrcThen grab and build the leapchat source:
go get github.com/cryptag/leapchatIf you don't already have Postgres 9.5 to Postgres 12 installed and running, install it with Homebrew:
brew install postgresql@10(It may ask you to append a line to your shell config; watch for this and follow those instructions.)
Next, you'll need three terminals.
In the first terminal, run database migrations, download postgrest,
and have postgrest connect to Postgres:
cd $(go env GOPATH)/src/github.com/cryptag/leapchat/db
chmod a+rx ~/
createdb
sudo -u $USER bash init_sql.sh
wget https://github.com/PostgREST/postgrest/releases/download/v7.0.0/postgrest-v7.0.0-osx.tar.xz
tar xvf postgrest-v7.0.0-osx.tar.xz
./postgrest postgrest.confIf you get an error, make sure that Postgres is running. On macOS, run Postgres by running
pg_ctl -D /usr/local/var/postgres startIn the second terminal, run LeapChat's Go backend:
cd $(go env GOPATH)/src/github.com/cryptag/leapchat
go build
./leapchatIn the third terminal, install JavaScript dependencies and start LeapChat's auto-reloading dev server:
cd $(go env GOPATH)/src/github.com/cryptag/leapchat
npm install
npm run build
npm run devLeapChat's dev server should now be running on http://localhost:5000 ! (And the Go backend on http://localhost:5001 .)
...then run in 3 different terminals:
cd db
pg_ctl -D /usr/local/var/postgres start
./postgrest postgrest.conf./leapchatnpm run devIf you don't already have Node 14.x installed (node --version will tell
you the installed version), install Node by running:
curl -sL https://deb.nodesource.com/setup_14.x | sudo -E bash -
sudo apt-get install nodejsIf you don't already have Postgres 9.5 or newer installed and running, install it by running:
sudo apt-get install postgresql postgresql-contribNext, you'll need three terminals.
In the first terminal, run database migrations, download postgrest,
and have postgrest connect to Postgres:
cd $(go env GOPATH)/src/github.com/cryptag/leapchat/db
chmod a+rx ~/
sudo -u postgres bash init_sql.sh
wget https://github.com/PostgREST/postgrest/releases/download/v7.0.0/postgrest-v7.0.0-ubuntu.tar.xz
tar xvf postgrest-v7.0.0-ubuntu.tar.xz
./postgrest postgrest.confIn the second terminal, run LeapChat's Go backend:
cd $(go env GOPATH)/src/github.com/cryptag/leapchat
go build
./leapchatIn the third terminal, install JavaScript dependencies and start LeapChat's auto-reloading dev server:
cd $(go env GOPATH)/src/github.com/cryptag/leapchat
npm install
npm run build
npm run startLeapChat should now be running at http://localhost:8080 !
...then run in 3 different terminals:
cd db
./postgrest postgrest.conf./leapchatnpm run startSame as the Linux commands above, with two modifications.
Replace:
npm run devwith
go build
npm run buildReplace:
go build
./leapchatwith
go build
sudo setcap cap_net_bind_service=+ep leapchat
./leapchat -prod -domain www.leapchat.org -http :80 -https :443 -iframe-origin www.leapchat.org 2>&1 | tee -a logs.txtWe use mocha as the testing framework, with chai's expect API.
To run tests:
$ npm test
and go tests:
$ go test [-v] ./...
This distribution includes cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See http://www.wassenaar.org/ for more information.
The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.
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