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#!/usr/bin/perl -W |
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|
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#---------------------------------------------------------------------- |
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# copyright (C) 2001 Florin Grad |
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# |
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# This is a really silly program that is supposed to allow an update of |
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# a dhcp-2* server to a dhcp-3* server |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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#------------------------------------------------------------------------ |
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|
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#search for a ddns-update-style entry in /etc/dhcpd.conf file |
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my $conf_file = "/etc/dhcpd.conf"; #$ARGV[0]; |
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my $conf_file_orig = "/etc/dhcpd.conf.orig"; |
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my $i=0; |
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open (DHCPCONF, "< $conf_file") or die "Can't open the $conf_file file for reading"; |
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while (<DHCPCONF>) { |
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if (/ddns-update-style/) { |
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$i++; |
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}; |
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}; |
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close (DHCPCONF); |
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|
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if ($i == 0) { #we are on a dhcp-2 |
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rename("$conf_file","$conf_file_orig") || die "Can't rename $conf_file: $!"; |
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open (DHCPCONF, "> $conf_file") or die "Can't open the $conf_file file for writing"; |
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print DHCPCONF "ddns-update-style none;\n"; |
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open (DHCPCONF_ORIG, "< $conf_file_orig") or die "Can't open the $conf_file_orig file for reading"; |
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while (<DHCPCONF_ORIG>) { |
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print DHCPCONF "$_"; |
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}; |
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close (DHCPCONF_ORIG); |
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close (DHCPCONF); |
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} |