#!/bin/bash
#
#  Copyright (c) 2017, The OpenThread Authors.
#  All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are met:
#  1. Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#  3. Neither the name of the copyright holder nor the
#     names of its contributors may be used to endorse or promote products
#     derived from this software without specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
#  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
#  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
#  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
#  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
#  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
#  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
#  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
#  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
#  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
#  POSSIBILITY OF SUCH DAMAGE.
#
#   Description:
#       This script is extends the length of the SUDO timeout period to 2 hours
#       It exists because some networks are slow, and some platforms are slow
#       and during an un-attended build the platform is often waiting for the
#       user to enter their sudo password to continue the build process.
#

ETC_SUDOERS=/etc/sudoers

# Assume we are not to extend the time
SUDO_EXTEND_TIME=${SUDO_EXTEND_TIME:-false}

# measurement is minutes, 120 = 2 hours
SUDO_EXTEND_TIME_AMOUNT=120

extend_sudo_timeout()
{
    local _why
    _why="Disabled"

    if ${SUDO_EXTEND_TIME}; then
        # do not repeat!
        set +e
        if sudo grep -s '^Defaults\s\s*timestamp_timeout' ${ETC_SUDOERS} >/dev/null; then
            SUDO_EXTEND_TIME=false
            _why="Already present"
        fi
        set -e
    fi

    if ${SUDO_EXTEND_TIME}; then
        echo "Extending sudo timeout..."
        sudo /bin/sh -c "echo \"Defaults timestamp_timeout=${SUDO_EXTEND_TIME_AMOUNT}\" >> ${ETC_SUDOERS}"
    else
        echo "sudo-timeout: Not extending, ${_why}"
    fi
}