read passwords from a Mozilla keyring

 This program reads passwords from keyrings used by Mozilla products,
 such as Firefox and Thunderbird. It can run entirely in text mode.
 .
 This program works with SQLite-based keyrings (signons.sqlite) and
 JSON-based keyrings (logins.json), used in recent versions of
 Firefox. Text-based keyrings can be read with pwdecrypt, from
 libnss3-tools package.