mattermost-session-cookie-firefox is a script to obtain the session cookie from a mattermost webclient. It is designed to be used with the tokencmd configuration option of matterhorn for mattermost instances that do not allow username/password or personal access token login.

• /bin/sh
• firefox
• curl
• sqlite3

$ mattermost-session-cookie-firefox
Usage: mattermost-session-cookie-firefox WEBCLIENT_URL [PROFILE]

To use the script with firefox, add this script to your $PATH and something like the following to your matterhorn config.ini:

tokencmd: mattermost-session-cookie-firefox my.mattermost.host.com my-firefox-profile-name

First, the cookie file for the provided or otherwise the first found firefox profile is located. Then, it is tried to extract the value of the MMAUTHTOKEN cookie for the desired webclient host and if that succeeds, a test api call to the specified host is made. If the cookie is present and the api call succeeds, the cookie value is printed to stdout. Otherwise, a webpage is opened in the browser (firefox) which asks the user to log in using the webclient of the mattermost instance. In the meantime, the above cookie retrieval and check procedure is repeated until it succeeds.