bind/update_bind.pl

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Perl
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#!/usr/bin/perl -W
#----------------------------------------------------------------------
# copyright (C) 2001 Florin Grad
#
# This is a really silly program that is supposed to allow an update of
# a dhcp-2* server to a dhcp-3* server
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#------------------------------------------------------------------------
#search for a ddns-update-style entry in /etc/dhcpd.conf file
my $conf_file = "/etc/named.conf"; #$ARGV[0];
my $conf_file_orig = "/etc/named.conf.orig";
my $i=0;
open (NAMEDCONF, "< $conf_file") or die "Can't open the $conf_file file for reading";
while (<NAMEDCONF>) {
if (/pid-file/) {
$i++;
};
};
close (NAMEDCONF);
if ($i == 0) { #we are on a bind8
my $pid_line = 0;
rename("$conf_file","$conf_file_orig") || die "Can't rename $conf_file: $!";
open (NAMEDCONF_ORIG, "< $conf_file_orig") or die "Can't open the $conf_file_orig file for reading";
open (NAMEDCONF, "> $conf_file") or die "Can't open the $conf_file file for writing";
while (<NAMEDCONF_ORIG>) {
if (/options/) {
$pid_line++;
print NAMEDCONF "$_"; # copy the current line in the new file
next;
};
if ($pid_line == 0) { # didn't reach the the options section yet
print NAMEDCONF "$_"; # copy the current line in the new file
} else {
print NAMEDCONF "\tpid-file \"/var/run/named/named.pid\"\;\n"; #add the missing line
$pid_line = 0;
print NAMEDCONF "$_";
};
};
close (NAMEDCONF_ORIG);
close (NAMEDCONF);
}