Webterm

Terminal over HTTP and HTTPS. Webterm uses ChromeOS' terminal emulator (hterm) which is a full fledged implementation of terminal emulation written entirely in Javascript. Also it uses websockets instead of Ajax.

hterm source - https://chromium.googlesource.com/apps/libapps/+/master/hterm/

Install

• git clone https://github.com/norsig/webterm

• cd webterm

• npm install

Run on HTTP:

node app.js -p 3000

If you run it as root it will launch /bin/login (where you can specify the user name), else it will launch ssh and connect by default to localhost.

If instead you wish to connect to a remote host you can specify the --sshhost option, the SSH port using the --sshport option and the SSH user using the --sshuser option.

You can also specify the SSH user name in the address bar like this:

http://yourserver:3000/webterm/ssh/<username>

Run on HTTPS:

Always use HTTPS! If you don't have SSL certificates from a CA you can create a self signed certificate using this command:

openssl req -x509 -newkey rsa:2048 -keyout key.pem -out cert.pem -days 30000 -nodes

And then run:

node app.js --sslkey key.pem --sslcert cert.pem -p 3000

Again, if you run it as root it will launch /bin/login, else it will launch SSH to localhost or a specified host as explained above.

Run webterm behind nginx:

Put the following configuration in nginx's conf:

location /webterm {
    proxy_pass http://127.0.0.1:3000/webterm;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";
    proxy_read_timeout 43200000;

    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_set_header Host $http_host;
    proxy_set_header X-NginX-Proxy true;
}

If you are running app.js as root and have an Nginx proxy you have to use:

http://yourserver.com/webterm

Else if you are running app.js as a regular user you have to use:

http://yourserver.com/webterm/ssh/<username>

Note that if your Nginx is configured for HTTPS you should run webterm without SSL.

Run webterm as a service daemon

Install webterm globally with -g option:

    $ sudo npm install webterm -g
    $ sudo cp /usr/local/lib/node_modules/webterm/bin/webterm.conf /etc/init
    $ sudo start webterm

This will start webterm on port 3000. If you want to change the port or redirect stdout/stderr you should change the last line in webterm.conf file, something like this:

exec sudo -u root webterm -p 80 >> /var/log/webterm.log 2>&1