Mike Noyes assured me that my message would not bounce. So I am
including the whole checkdisk weblet script.
I added one more thing to search for and that is floppy drives.
Ideally, I don't think you'd want to leave your media mounted. (crack
could be run on the shadow password file because the msdos packages are
mounted world readable. Yeah Yeah, if your firewall is compromised.) In
a normal start of DCD your floppy(s) or CD-ROM media are not left
mounted. That's why I thought it was relevant to only search for
/dev/ram* at first. However, the web page message of checkdisk sounds
like its talking about checking your floppies for room to back up
packages. If you have a floppy that meets the weblet error message
criteria, then the web page will display an error. The check of
floppies may be useful then.
This solution still seems lame because it doesn't take care of all the
other media types. However, the solution probably takes care of most of
the problems.
Test with a floppy at 98% full and cdrom mounted:
Fri Apr 12 19:59:55 UTC 2002
myrouter Disk Status: error
<snip>
Details:
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/ram0 12155 3367 8788 28% /
/dev/ram1 4049 44 4005 1% /var/log
/dev/hda 19368 19368 0 100% /mnt/cdrom
/dev/fd0 1424 1402 22 98% /mnt/floppy
Test with a floppy that has more available space mounted:
Fri Apr 12 20:19:22 UTC 2002
myrouter Disk Status: ok
<snip>
Details:
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/ram0 12155 3368 8787 28% /
/dev/ram1 4049 44 4005 1% /var/log
/dev/hda 19368 19368 0 100% /mnt/cdrom
/dev/fd0 1424 805 619 57% /mnt/floppy
Test with /dev/ram1 at 100 percent capacity:
Fri Apr 12 20:24:38 UTC 2002
myrouter Disk Status: error
<snip>
Details:
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/ram0 12155 3368 8787 28% /
/dev/ram1 4049 4049 0 100% /var/log
/dev/hda 19368 19368 0 100% /mnt/cdrom
/dev/fd0 1424 805 619 57% /mnt/floppy
The new code with a few more comments:
#!/bin/sh
. /etc/weblet.conf
func=$1
setwarn() {
case $level in
warn|error)
;;
*)
level=warn
bkg='BGCOLOR="#ffff33"'
;;
esac
}
seterror() {
level=error
bkg='BGCOLOR="#ff3333"'
}
OIFS=$IFS
IFS='
'
level=ok
bkg='BGCOLOR="#33ff33"'
for line in `df | grep /dev/` ; do
# Look at the greped line returned from df.
# Error reporting is only concerned about shortage of space
# on both floppy drives and ram drives.
# All other mounted media is presumed to be some sort of
# readonly boot media. The default case statement, *)
# will ignore readonly media especially cdroms.
case $line in
# Search for /dev/fd* and /dev/ram* lines to calculate
# drive capacity ratios.
*fd*|*ram*)
IFS=$OIFS
set -- $line
DEV=${1#/dev/}
used=${5%\%}
used=${used:-100}
free=${4:-0}
pcnt=$(( ${free} * 100 / ${2:-1} ))
eval WRN_PCNT=\$WRN_DISK_${DEV}_PCNT
eval WRN_K=\$WRN_DISK_${DEV}_K
eval ERR_PCNT=\$ERR_DISK_${DEV}_PCNT
eval ERR_K=\$ERR_DISK_${DEV}_K
WRN_PCNT=${WRN_PCNT:-$WRN_DISK_PCNT}
WRN_K=${WRN_K:-$WRN_DISK_K}
ERR_PCNT=${ERR_PCNT:-$ERR_DISK_PCNT}
ERR_K=${ERR_K:-$ERR_DISK_K}
[ "$pcnt" -le "${WRN_PCNT}" ] && setwarn
[ "$free" -le "${WRN_K}" ] && setwarn
[ "$pcnt" -le "${ERR_PCNT}" ] && seterror
[ "$free" -le "${ERR_K}" ] && seterror
;;
*)
continue
;;
esac
done
case $func in
verbose)
cat <<- /HTML-DATA
Content-type: text/html
<HTML><HEAD><TITLE>${0##*/}</TITLE></HEAD>
$(cat cgi.include)
<BODY>
<script language="JavaScript">b_head();</script>
<script language="JavaScript">t_head("Firewall Status");</script>
<tr><td><div>
<p>$(date)</p>
<table><tr><td>$(hostname) Disk Status:</td>
<td ${bkg}><b>${level}</b></td></tr></table>
<p><b>NOTE:</b> If you have less than about 750K free disk
space, you need to be very careful backing up large packages,
like root. You could run out of disk space and corrupt your
LRP disk image, making it unusable. It is always a good idea
to verify the current and new package sizes before writing
the new package to the disk.</p>
<p><b>Details:</b></p>
<pre>$(df)</pre>
</div></td></tr>
<script language="JavaScript">t_foot();</script>
<script language="JavaScript">b_foot();</script>
</BODY></HTML>
/HTML-DATA
;;
img)
case $level in
ok|warn|error)
echo "Content-type: image/gif"
echo "Expires: Thu, 7 Mar 1968 00:00:00 GMT"
echo ""
cat "../images/${level}.gif"
;;
*)
echo "Status: 400 Bad Request"
echo ""
;;
esac
;;
*)
echo "Content-type: text/html"
echo "Status: 400 Bad Request"
echo ""
echo "<HTML><HEAD><TITLE>ERROR</TITLE></HEAD>"
echo "<BODY BGCOLOR=\"#cc9999\"><H2>400 Bad Request</H2>"
echo "Unknown response format: $1"
count=1
while [ ${count} -le 5 ] ; do
echo "<!-- Padding to override IE 'friendly error pages' -->"
echo "<!-- Response must be longer than 0x200 bytes -->"
count=$(( $count + 1 ))
done
echo "</BODY></HTML>"
exit 1
;;
esac
Greg Morgan
Greg Morgan wrote:
>
> Charles Steinkuehler wrote:
> >
> > > > - Alter weblet disk-checking script to ignore CD-ROM (always 100% full)
> > >
> > > I am not following the weblet CD-ROM issue. I am running weblet 1.2.0
> > > off of DCD 1.0.2. I've clicked all around on the weblet web pages and I
> > > do not see where the CD-ROM is reported at all.
> >
> > If you mount the CD-ROM, the weblet disk-check script will report an error.
> > This only occurs when the CD-ROM is actually mounted (ie it shows up in the
> > output of df). The disk monitoring script should probably be modified to
> > ignore read-only media.
> >
> ahhhhhh. I see the problem now after I mounted the cdrom. I didn't
> save the original file to do a diff on it, but a weblet checkdisk
> solution is listed below. I am not posting all of it because my message
> would get bounced because of html content. I simply added a case
> statement and ignored all lines that are not /dev/ram? Four lines of
> comments explain my rational in the code below.
>
> I hope this helps,
> Greg Morgan
>
> for line in `df | grep /dev/` ; do
> # Look at the greped line returned from df.
> # We are only concerned about shortage of space on the ram drives.
> # All other mounted media is presumed to be some sort of boot media.
> # The default case statement will ignore it especially cdroms.
> case $line in
> *ram*)
> IFS=$OIFS
> set -- $line
>
> DEV=${1#/dev/}
>
> used=${5%\%}
> used=${used:-100}
>
> free=${4:-0}
> pcnt=$(( ${free} * 100 / ${2:-1} ))
>
> eval WRN_PCNT=\$WRN_DISK_${DEV}_PCNT
> eval WRN_K=\$WRN_DISK_${DEV}_K
> eval ERR_PCNT=\$ERR_DISK_${DEV}_PCNT
> eval ERR_K=\$ERR_DISK_${DEV}_K
>
> WRN_PCNT=${WRN_PCNT:-$WRN_DISK_PCNT}
> WRN_K=${WRN_K:-$WRN_DISK_K}
> ERR_PCNT=${ERR_PCNT:-$ERR_DISK_PCNT}
> ERR_K=${ERR_K:-$ERR_DISK_K}
>
> [ "$pcnt" -le "${WRN_PCNT}" ] && setwarn
> [ "$free" -le "${WRN_K}" ] && setwarn
> [ "$pcnt" -le "${ERR_PCNT}" ] && seterror
> [ "$free" -le "${ERR_K}" ] && seterror
> ;;
> *)
> continue
> ;;
> esac
> done
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