freedomboneeee/src/freedombone-update-date

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#!/bin/bash
#
# .---. . .
# | | |
# |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-.
# | | (.-' (.-' ( | ( )| | | | )( )| | (.-'
# ' ' --' --' -' - -' ' ' -' -' -' ' - --'
#
# Freedom in the Cloud
#
# Updates the date
# License
# =======
#
# Copyright (C) 2015-2016 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
PROJECT_NAME='freedombone'
export TEXTDOMAIN=${PROJECT_NAME}-update-date
export TEXTDOMAINDIR="/usr/share/locale"
COMPLETION_FILE=/root/${PROJECT_NAME}-completed.txt
TIMESOURCE='google.com'
TIMESOURCE2='www.ptb.de'
LOGFILE=/var/log/tlsdate.log
TIMEOUT=5
EMAIL=
if grep -q "Admin user" $COMPLETION_FILE; then
ADMIN_USER=$(cat $COMPLETION_FILE | grep "Admin user" | awk -F ':' '{print $2}')
EMAIL=$ADMIN_USER@$HOSTNAME
fi
# File which contains the previous date as a number
BEFORE_DATE_FILE=/var/log/tlsdateprevious.txt
# File which contains the previous date as a string
BEFORE_FULLDATE_FILE=/var/log/tlsdate.txt
DATE_BEFORE=$(date)
BEFORE=$(date "+%s")
BACKWARDS_BETWEEN=0
re="^[0-9]+$"
# If the date was previously set
if [ -s "$BEFORE_DATE_FILE" ]; then
filesize=$(wc -c "$BEFORE_DATE_FILE" | cut -f 1 -d " ")
if [ $filesize -ge 5 ]; then
BEFORE_FILE=$(cat $BEFORE_DATE_FILE)
if [[ $BEFORE_FILE =~ $re ]]; then
BEFORE_FULLDATE=$(cat $BEFORE_FULLDATE_FILE)
# is the date going backwards?
if (( $BEFORE_FILE > $BEFORE )); then
echo -n $"Date went backwards between tlsdate updates. " >> $LOGFILE
echo -n "$BEFORE_FILE > $BEFORE, " >> $LOGFILE
echo "$BEFORE_FULLDATE > $DATE_BEFORE" >> $LOGFILE
# Send a warning email
if [ $EMAIL ]; then
echo $(tail $LOGFILE -n 2) | mail -s $"tlsdate anomaly" $EMAIL
fi
# Try another time source
TIMESOURCE=$TIMESOURCE2
# try running without any parameters
tlsdate >> $LOGFILE
BACKWARDS_BETWEEN=1
fi
fi
fi
fi
# Set the date
/usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE -p 443 >> $LOGFILE
DATE_AFTER=$(date)
AFTER=$(date "+%s")
# After setting the date did it go backwards?
if (( $AFTER < $BEFORE )); then
echo $"Incorrect date: $DATE_BEFORE -> $DATE_AFTER" >> $LOGFILE
# Send a warning email
if [ $EMAIL ]; then
echo $(tail $LOGFILE -n 2) | mail -s $"tlsdate anomaly" $EMAIL
fi
# Try resetting the date from another time source
/usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE2 -p 443 >> $LOGFILE
DATE_AFTER=$(date)
AFTER=$(date "+%s")
else
echo -n $TIMESOURCE >> $LOGFILE
if [ -s "$BEFORE_DATE_FILE" ]; then
echo -n " " >> $LOGFILE
echo -n $BEFORE_FILE >> $LOGFILE
fi
echo -n " " >> $LOGFILE
echo -n $BEFORE >> $LOGFILE
echo -n " " >> $LOGFILE
echo -n $AFTER >> $LOGFILE
echo -n " " >> $LOGFILE
echo $DATE_AFTER >> $LOGFILE
fi
# Log the last date
if [[ $BACKWARDS_BETWEEN == 0 ]]; then
echo "$AFTER" > $BEFORE_DATE_FILE
echo "$DATE_AFTER" > $BEFORE_FULLDATE_FILE
exit 0
fi
exit 1