90 lines
2.8 KiB
Bash
Executable File
90 lines
2.8 KiB
Bash
Executable File
#!/bin/sh
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##########################################################################################################
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##
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## Name: ix_setNTP
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## Created: September 2015
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## Author(s): Philip Smart
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## Description: A shell script helper program for the dPWR program.
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## This script is executed by the dPWR program to setup the Network Time Protocol
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## at the systen level and normally executes SUID.
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## Credits:
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## Copyright: (c) 2015-2019 Philip Smart <philip.smart@net2net.org>
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##
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## History: September 2015 - Initial module written.
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##
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#########################################################################################################
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## This source file is free software: you can redistribute it and#or modify
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## it under the terms of the GNU General Public License as published
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## by the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## This source file is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program. If not, see <http://www.gnu.org/licenses/>.
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#########################################################################################################
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trap exit 15
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# Get the parameters for the NTP server.
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#
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if [ $# != 4 ]; then
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# Error exit
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exit 255
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fi
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SERVER=$1
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TIMEZONE_ID=$2
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TIMEZONE_DST=$3
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TIMEZONE_OFFSET=$4
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# If a previous backup exists, remove it and copy current config to backup.
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#
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if [ -f /etc/ntp.conf.bak ]; then
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rm -f /etc/ntp.conf.bak
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fi
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if [ ! -f /etc/ntp.conf ]; then
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# Exit as no NTP configuration.
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#
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exit 254
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fi
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mv /etc/ntp.conf /etc/ntp.conf.bak
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# Now copy backup to current replacing necessary parameters.
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#
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> /etc/ntp.conf
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while read line
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do
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if [ "`/bin/echo "$line" | /bin/grep '^server'`" != "" ]; then
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echo "server $SERVER" >> /etc/ntp.conf
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continue
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fi
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if [ "`/bin/echo "$line" | /bin/grep '^#timezone_id'`" != "" ]; then
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/bin/echo "#timezone_id $TIMEZONE_ID" >> /etc/ntp.conf
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continue
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fi
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if [ "`/bin/echo "$line" | /bin/grep '^#timezone_dst'`" != "" ]; then
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/bin/echo "#timezone_dst $TIMEZONE_DST" >> /etc/ntp.conf
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continue
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fi
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if [ "`/bin/echo "$line" | /bin/grep '^#timezone_offset'`" != "" ]; then
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/bin/echo "#timezone_offset $TIMEZONE_OFFSET" >> /etc/ntp.conf
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continue
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fi
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/bin/echo "$line" >> /etc/ntp.conf
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done < /etc/ntp.conf.bak
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# Restart the service if running.
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#
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service ntp restart
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# Ensure service is enabled on reboot.
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#
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update-rc.d -f ntp enable
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# All done, exit.
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#
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exit 0
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