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#!/usr/bin/perl -w
#
# Module: vyatta-vtysh.pl
#
# **** License ****
# Version: VPL 1.0
#
# The contents of this file are subject to the Vyatta Public License
# Version 1.0 ("License"); you may not use this file except in
# compliance with the License. You may obtain a copy of the License at
# http://www.vyatta.com/vpl
#
# Software distributed under the License is distributed on an "AS IS"
# basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
# the License for the specific language governing rights and limitations
# under the License.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Stig Thormodsrud
# Date: December 2007
# Description: Wrapper script between vyatta cfg templates and vtysh
#
# **** End License ****
#
use warnings;
use strict;
use POSIX;
my $vtysh;
if ( -x '/usr/bin/vyatta-vtysh' && -S '/var/run/vyatta/quagga/zebra.vty' ) {
$vtysh = '/usr/bin/vyatta-vtysh';
} else {
$vtysh = '/usr/bin/vtysh';
}
my $logfile = '/tmp/vtysh.log';
my $ignore_error = 0;
sub log_it {
my ($cmdline) = @_;
if (substr($cmdline,0,2) eq "-c" and $ignore_error) {
$cmdline = "-n $cmdline";
}
my $timestamp = strftime("%Y%m%d-%H:%M.%S", localtime);
my $user = $ENV{'USER'};
$user = "boot" if !defined $user;
my $rc = open(my $fh, ">>", $logfile);
if (!defined $rc) {
print "Can't open $logfile: [$!]\n";
return;
}
print $fh "$timestamp:$user [$cmdline]\n";
close($fh);
}
sub parse_cmdline {
my $cmdline = "";
foreach my $arg (@ARGV) {
if (substr($arg, 0, 2) eq "-n") {
$ignore_error = 1;
next;
}
if (substr($arg,0, 2) eq "-c") {
#
# This script expects a space between the -c and the command,
# but try to handle it anyway
#
if ($arg ne "-c") {
my $tmp = substr($arg,2);
$cmdline .= "-c \"$tmp\" ";
next;
}
} else {
$arg = " \"$arg\" ";
}
$cmdline .= $arg;
}
return $cmdline
}
#
# Send the config to quagga
#
# Note: Quagga never exits with an error code, but it does print an
# error message to stdout. So if there is output, print it and
# exit with an error. Certain error messages we dont' care about
# such as issuing a "no <foo>" when foo doesn't exist. In those
# cases it is up to the template file whether or not to fail on
# the error code.
#
sub send_cmds_to_quagga {
my ($cmdline) = @_;
my $output = `$vtysh $cmdline`;
if (defined $output && $output ne "") {
if ($ignore_error) {
log_it("Ignoring: $output");
return 0;
}
log_it("Error: $output");
print "%$output\n";
return 1;
}
return 0;
}
sub usage {
print "usage: $0 [-n] -c \"<quagga command>\"\n";
}
#
# main
#
my ($cmdline, $rc);
$cmdline = parse_cmdline();
log_it($cmdline);
if (! defined($cmdline) or $cmdline eq "") {
usage();
exit 1;
}
$rc = send_cmds_to_quagga($cmdline);
exit $rc
#end of file
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