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Improve the tlsdate sanity script

This commit is contained in:
Bob Mottram 2014-07-26 13:57:59 +01:00
parent 12f80195dd
commit 6b301b4825
1 changed files with 60 additions and 6 deletions
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66
beaglebone.txt
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@ -1013,26 +1013,80 @@ If you get errors during the /configure/ stage then you may need to reboot so th
editor /usr/bin/updatedate editor /usr/bin/updatedate
#+END_SRC #+END_SRC
Add the following: Add the following, changing /username@mydomainname.com/ to your email address:
#+BEGIN_SRC: bash #+BEGIN_SRC: bash
#!/bin/bash #!/bin/bash
TIMESOURCE=google.com TIMESOURCE=google.com
TIMESOURCE2=www.ptb.de
LOGFILE=/var/log/tlsdate.log LOGFILE=/var/log/tlsdate.log
TIMEOUT=5
EMAIL=username@mydomainname.com
# 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=$(date) DATE_BEFORE=$(date)
YEAR_BEFORE=$(echo $DATE_BEFORE | awk -F ' ' '{print $6}') BEFORE=$(date -d "$Y-$M-$D" '+%s')
/usr/bin/timeout 3 tlsdate -l -t -H $TIMESOURCE -p 443
# If the date was previously set
if [[ -f "$BEFORE_DATE_FILE" ]]; then
BEFORE_FILE=$(cat $BEFORE_DATE_FILE)
BEFORE_FULLDATE=$(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
echo $(tail $LOGFILE -n 2) | mail -s "tlsdate anomaly" $EMAIL
# Try another time source
TIMESOURCE=$TIMESOURCE2
fi
fi
# Set the date
/usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE -p 443 >> $LOGFILE
DATE_AFTER=$(date) DATE_AFTER=$(date)
YEAR_AFTER=$(echo $DATE_AFTER | awk -F ' ' '{print $6}') AFTER=$(date -d "$Y-$M-$D" '+%s')
if [ "$YEAR_AFTER" -lt "$YEAR_BEFORE" ]; then
# After setting the date did it go backwards?
if (( AFTER < BEFORE )); then
echo "Incorrect date: $DATE_BEFORE -> $DATE_AFTER" >> $LOGFILE echo "Incorrect date: $DATE_BEFORE -> $DATE_AFTER" >> $LOGFILE
date -s "DATE_BEFORE"
# Send a warning email
echo $(tail $LOGFILE -n 2) | mail -s "tlsdate anomaly" $EMAIL
# Try resetting the date from another time source
/usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE2 -p 443 >> $LOGFILE
DATE_AFTER=$(date)
AFTER=$(date -d "$Y-$M-$D" '+%s')
else else
echo -n $TIMESOURCE >> $LOGFILE echo -n $TIMESOURCE >> $LOGFILE
if [[ -f "$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 -n " " >> $LOGFILE
echo $DATE_AFTER >> $LOGFILE echo $DATE_AFTER >> $LOGFILE
fi fi
# Log the last date
echo "$AFTER" > $BEFORE_DATE_FILE
echo "$DATE_AFTER" > $BEFORE_FULLDATE_FILE
#+END_SRC #+END_SRC
Save and exit. Save and exit.