#!/bin/sh
# vim: set fileencoding=utf-8 ai noet sts=8 sw=8 tw=0:
+#
+# Copyright © 2009 Stephen Gran <sgran@debian.org>
+# Copyright © 2017 Peter Palfrader
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
FILE=''
INTERVAL=60
EXIT=0
+ZEROFAIL=''
+FOLLOW=''
+
+set -e
+set -u
usage(){
ret=$1
-h This help message
-i Interval in minutes at which to alert
+ -z Empty files are not OK
+ -L Follow symlinks
-f File to check
EOF
exit $ret
}
-while getopts f:i:h opt ; do
+while getopts f:i:hzL opt ; do
case "$opt" in
f) FILE="$OPTARG" ;;
i) INTERVAL="$OPTARG" ;;
+ z) ZEROFAIL="1" ;;
+ L) FOLLOW="-L" ;;
h) usage 0
esac
done
+shift $(($OPTIND - 1))
+
-if [ -z "$FILE" ]; then
+if [ -z "$FILE" ] && [ "$#" = 0 ]; then
echo "Need file argument!" >&2
- usage 1
+ usage 3
fi
-if [ ! -r "$FILE" ]; then
- printf "state file %s is missing or unreadable\n" $FILE
- exit 2
+if [ -n "$FILE" ]; then
+ set dummy "$FILE" "$@"
+ shift
fi
-if [ "$(( $( date +%s ) - $(stat -c %Y $FILE) ))" -gt "$(( $INTERVAL * 60 ))" ]; then
- printf "state file %s is older than %d minutes\n" $FILE $INTERVAL
- exit 2
-fi
+msg=""
+ok=""
+failed=""
+total=0
+
+while [ "$#" -gt 0 ]; do
+ f="$1"; shift
+ total=$((total + 1))
-printf "state file %s OK: updated on %s\n" $FILE "$(stat -c %y $FILE)"
+ if [ ! -e "$f" ]; then
+ msg="${msg}state file $f is missing or unreadable\n"
+ EXIT=2
+ failed="$f $failed"
+ elif [ -n "$ZEROFAIL" ] && ! [ -s "$f" ]; then
+ msg="${msg}state file $f is empty\n"
+ EXIT=2
+ failed="$f $failed"
+ elif [ "$(( $( date +%s ) - $(stat $FOLLOW -c %Y "$f") ))" -gt "$(( $INTERVAL * 60 ))" ]; then
+ msg="${msg}state file $f is older than $INTERVAL minutes (updated on $(stat $FOLLOW -c %y "$f"))\n"
+ EXIT=2
+ failed="$f $failed"
+ else
+ msg="${msg}state file $f OK: updated on $(stat $FOLLOW -c %y "$f")\n"
+ ok="$f $ok"
+ fi
+done
+
+if [ "$total" = 1 ]; then
+ echo -n $msg
+else
+ if [ -n "$failed" ]; then
+ echo -n "FAIL: $failed "
+ fi
+ if [ -n "$ok" ]; then
+ echo -n "OK: $ok "
+ fi
+ echo
+ echo -n $msg
+fi
+exit $EXIT