Script to launch a remote browser to authenticate a host on PUCRS network

authenticate_pucrs.sh

#!/bin/bash

# By Leandro Heck (leoheck@gmail.com)
# Add this script in your .bashrc (or .zshrc) or source it like:
# $> source autenticate_pucrs.sh

# Usage examples:

# 1. Authenticate using same network user
#    $> authenticate_host lheck gaphl12

# 2. Autenticate using different users
#    $> authenticate_host lheck:leo gaphl12

# 3. Autenticate using different users and ip address
#    $> authenticate_host lheck:leo 10.32.10.134

authenticate_host()
{
    user=$1
    host=$2

    if ! which sshpass > /dev/null 2>&1; then
        echo "\nMissing sshpass (install it)\n"
        return 1
    fi

    if [[ $# != 2 ]]; then
        echo -e "\nUSAGE: authenticate_host <KRITI_USER>[:HOST_USER] <HOSTNAME|IP>\n"
        return 1
    fi

    user1=$(cut -d":" -f1 <<< $user)
    user2=$(cut -d":" -f2 <<< $user)

    echo -n "password for $user1@kriti: "
    read -s pass1
    echo

    if [[ $user1 != $user2 ]]; then
        echo -n "password for $user2@$host: "
        read -s pass2
        echo
    else
        pass2=$pass1
    fi

    echo 'conneting kriti...'; \
    sshpass -p "$pass1" ssh -C $user1@kriti.inf.pucrs.br -p 8888 -Y " \
        echo \"conneting $host...\"; \
        sshpass -p \"$pass2\" ssh -C $user2@$host -Y ' \
            echo 'launching authentication page...'; \
            firefox -new-instance https://gwpolicy02.pucrs.br/ 2> /dev/null &'"
}