dhcp status apps

[Edward Mann]

>  > > Subject: Re: dhcp status apps
>  > > From: chris_cox at stercomm.com
>  > > To: dhcp-users at isc.org
>  > > Date: Fri, 4 Jan 2008 13:16:21 -0600
>  > >
>  > > On Fri, 2008-01-04 at 11:25 -0500, J E wrote:
>  >> > > Recently a recommendation was given on the list for dhcpstatus (
> http://dhcpstatus.sourceforge.net/
>  >> > >   )by Glenn S. as a way to take a nicer look at leases, etc. And
> while
>  >> > > it does seem to offer a nice view of some things, the project
> hasn't
>  >> > > been touched in about 6 years. So v.3 support is minimal, and not
>  >> > > complete - and of course there is no mention of v.4.
>  > >
>  > > I'm curious.  What is it missing?  You say it's "not complete".
>  > >
>  > > Just curious.  We use it it here.  We also wrote some stuff to web
>  > > display our DNS.
>  > >
>  >> > >
>  >> > > Can anyone give some recommendations for other products that may
> have
>  >> > > similar, or even better features than dhcpstatus? I've checked the
>  >> > > list archive, and done some googling but not seeing much that
> isn't
>  >> > > part of some much larger project, tied into DDNS capabilities,
> etc.
>  >> > > Free is best, but pay solutions may be OK too  :)
>  >> > >
>  >> > > Thanks!
>  >> > >
>  >> > > jeff
>
> One thing that DHCPStatus is missing (very important, imho) is the ability
> to process "include" statements.  We are running more than 250 subnets,
> and
> are using include statements in our dhcpd.conf that allow us to split up
> the conf into manageable files.  DHCPStatus does not include the included
> configs, so it is kind of useless in this sense.  I am looking at the code
> to see if it is easy to modify, but I am not a perlmonger by any means so
> I
> don't hold much hope!  :)
>
> Alex
>
>
Okay i did this one quick, and was not sure if i should even touch the
thing. That is because of some of the messages i was reading. But here is
the file.
Note: There is a bug with the original if you have
key DHCP-UPDATE-KEY {
  ...
  ...
}

it will not process the file. So once again i can see there are problems
with this app. But i did not find that until i got the includes to work.
Because my key is in an include file.

Note2: I have not tested this code allot, and an "perlmonger" may banish
me from ever writing perl code again for the public consumption.

Take the following code and replace your get_symbols function with it.

<code>
#--------------------------------------------------------------------------
# Read all the lines in a file, and also run the includes if there are
# any.
#
sub get_symbols {
	my $file;
	if ( $#_ < 0 ) {
		$file = "/etc/dhcpd.conf";
	}
	else {
		$file = shift;
	}

	my @sym;
	our @includes;
	open( FILE, $file ) || die("Can't open $file\n");
	while ( defined(FILE) && ( my $line = <FILE> ) ) {
		push(@sym, process_sym($line));

	}
	close(FILE);
	if ( @includes > 0 ) {
		foreach $inc (@includes) {
			open( INC, $file ) || die("Can't open $file\n");
			while ( defined(INC) && ( my $line = <INC> ) ) {
				push(@sym, process_sym($line));
			}
			close(INC)
		}
	}

	return (@sym);
}

#--------------------------------------------------------------------------
# Read the line, throw away comment line (ones starting with
# "#", and get a list of "symbols".
#
sub process_sym {
	$line = shift;
	my $comment_index = index( $line, "#" );    # does this line contain a
	if ( $comment_index >= 0 ) {                # comment ?
		if ( substr( $line, 0, 2 ) eq '#$' ) {    # is it a subnet comment ?
			$line = &get_comment($line);
		}
		else {                                    # ignore everything after the
			$line = substr( $line, 0, $comment_index ) . "\n";    # "#" sign.
		}
	}
	$line =~ s/^\s+//;
	if ( $line =~ m/^include/ ) {
		@line = split( /\s/, $line );
		$line[1] =~ s/"//g;
		$line[1] =~ s/;//;
		push( @includes, $line[1] );
	}
	else {
		$line =~ s/\n/ /g;
		$line =~ s/{/ { /g;
		$line =~ s/\t/ /g;
		$line =~ s/;/ ; /g;
		$line =~ s/,/ , /g;
		$line =~ s/"/ /g;
		return $line;
	}
}
</code>

If this code is not satisfactory let me know. I only tested it with two
includes. YMMV.

Thanks.