Corporate_proxy_function.txt

#!/bin/bash

function __set_proxy_envs() {
    NO_PROXY_ENV="no_proxy NO_PROXY"
    PROXY_ENV="http_proxy https_proxy all_proxy HTTP_PROXY HTTPS_PROXY ALL_PROXY"
}

function __unset_proxy_envs() {
    unset NO_PROXY_ENV PROXY_ENV
}

function proxy_enable() {
    __set_proxy_envs
    local NO_PROXY_VALUE='localhost,127.0.0.1,0,1,2,3,4,5,6,7,8,9'
    local PROXY_USERNAME=''
    local PROXY_SERVER=''
    local PROXY_PORT=''
    local PROXY_PASSWORD=''

    if [[ -z "${PROXY_USERNAME}" ]]; then
        echo -n "Username: "
        read -r PROXY_USERNAME
    fi
    if [[ -n "${PROXY_USERNAME}" ]] && [[ -z "${PROXY_PASSWORD}" ]]; then
        read -p "Password: " -rs PROXY_PASSWORD && echo -e " "
    fi
    if [[ -z "${PROXY_SERVER}" ]]; then
        echo -n "Server: "
        read -r PROXY_SERVER
    fi
    if [[ -z "${PROXY_PORT}" ]]; then
        echo -n "Port: "
        read -r PROXY_PORT
    fi

    local PROXY_CREDENTIALS=$(echo -n "${PROXY_USERNAME}:${PROXY_PASSWORD}" | base64 )
    local PROXY_VALUE="http://${PROXY_CREDENTIALS}@${PROXY_SERVER}:${PROXY_PORT}"

    for envar in ${NO_PROXY_ENV}; do
        export "${envar}"="${NO_PROXY_VALUE}"
    done
    for envar in ${PROXY_ENV}; do
        export "${envar}"="${PROXY_VALUE}"
    done
    echo "No proxy value set to: ${NO_PROXY_VALUE}"
    echo "Proxy environment variable(s) set for: ${PROXY_ENV}"
    __unset_proxy_envs
}

function proxy_disable() {
    __set_proxy_envs
    for envar in ${PROXY_ENV} and ${NO_PROXY_ENV}; do
        unset "${envar}"
    done
    echo "Proxy environment variable(s) removed: ${NO_PROXY_ENV} ${PROXY_ENV}"
    __unset_proxy_envs
}