Utility to firefox_decrypt.py

password.sh

#!/bin/bash 
# Utility to firefox_decrypt.py 
# Copyright (C) 2016 Christoph criztovyl Schulz 
# 
# This program is free software: you can redistribute it and/or modify 
# it under the terms of the GNU General Public License as published by 
# the Free Software Foundation, either version 3 of the License, or 
# (at your option) any later version. 
# 
# This program is distributed in the hope that it will be useful, 
# but WITHOUT ANY WARRANTY; without even the implied warranty of 
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 
# GNU General Public License for more details. 
# 
# You should have received a copy of the GNU General Public License 
# along with this program. If not, see <http://www.gnu.org/licenses/>. 

# You will need to source this from your .bashrc.

password()
{
    [[ "$1" =~ -{0,2}h(elp)? ]] && 
    echo "$0 [profile] [password var] [grepExpr]" &&
    echo " profile: Profile number (starts from 1); will ask user if not given" &&
    echo " password var: Name of variable that stores the profile's master password; defaults to FD_FF_PW_[profile number]" &&
    echo ' grepExpr: when starts with "u:" will only grep usernames, "w:" only websites; to disable this, use "-:"' && exit 0

    local profile=$1
    local password_var=$2
    local grepExpr=$3


    # Commands
    FIREFOX_DECRYPT="firefox_decrypt"

    if [ -z "$profile" ]; then

        local maxProfile=$($FIREFOX_DECRYPT -l | wc -l)

        $FIREFOX_DECRYPT -l
        read -p "Choose which profile to use: " profile

        if [ ! "$profile" ] || [ $profile -lt 1 ] || [ $profile -gt $maxProfile ]; then
            echo "Invalid profile \"$profile\"" >&2
            return 1
        fi
    fi

    [ -z "$password_var" ] &&
        password_var="FD_FF_PW_$profile"

    [ -z "${!password_var}" ] &&
        read -sp "Enter your profile's master password: " $password_var && echo
    export $password_var
    
    [ -z "$grepExpr" ] && echo "Enter grep Expression (can be empty; 'u:' username only, 'w:' for website and '-:' if password starts with u:, w: or -:):" && read grepExpr

    local grepContext

    case ${grepExpr:0:2} in
        "u:")
            grepExpr="Username: '.*${grepExpr:2}.*"
            grepContext="-C 1"
            ;;
        "w:")
            grepExpr="Website: .*${grepExpr:2}.*"
            grepContext="--after 2"
            ;;
        "-:")
            grepExpr="${grepExpr:2}"
            grepContext="-C 2"
            ;;
    esac
    
    echo "${!password_var}" | $FIREFOX_DECRYPT -c $profile | grep "$grepExpr" $grepContext
}