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|
#!/usr/bin/perl
# Author: Michael Larson <mike@vyatta.com>
# Date: 2010
# Description: Perl script for activating/deactivating portions of the configuration
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2006, 2007, 2008, 2009, 2010 Vyatta, Inc.
# All Rights Reserved.
# **** End License ****
use strict;
use warnings;
use File::Find;
use lib "/opt/vyatta/share/perl5";
sub wanted {
return unless ( $_ eq '.disable' );
print("Cannot deactivate nested elements\n");
exit 1;
}
sub wanted_local {
if ( $_ eq '.disable' ) {
#we'll supercede this .disable by the parent and remove this.
my $f = $File::Find::name;
`rm -f $f`;
}
}
sub check_parents {
my @p = @_;
my $l_dir = "$ENV{VYATTA_TEMP_CONFIG_DIR}/";
my $a_dir = "$ENV{VYATTA_ACTIVE_CONFIGURATION_DIR}/";
foreach my $sw (@p) {
$l_dir .= "/$sw";
$a_dir .= "/$sw";
if (-e "$l_dir/.disable") {
return 1;
}
if (-e "$a_dir/.disable") {
return 1;
}
}
return 0;
}
sub usage() {
print "Usage: $0 <path>\n";
exit 0;
}
my $action = $ARGV[0];
if (!defined $ARGV[1] || $ARGV[1] eq '') {
print("Cannot activate/deactivate configuration root\n");
exit 1;
}
#adjust for leaf node
my $i = 0;
my @path = @ARGV[1..$#ARGV];
foreach my $elem (@path) {
$elem =~ s/\//%2F/g;
$elem =~ s/\s+/\//g;
$path[$i++] = $elem;
}
my $path = join '/', @path;
my $full_path = "$ENV{VYATTA_TEMP_CONFIG_DIR}/$path";
if (! -e $full_path) {
$path = join '/', @path[0..$#path-1];
my $leaf = "$ENV{VYATTA_TEMP_CONFIG_DIR}/$path/node.val";
if (-e $leaf) {
#prevent setting on leaf or multi, check for node.val
printf("Cannot activate/deactivate end node\n");
exit 1;
}
else {
printf("This command is not valid: $path\n");
exit 1;
}
}
#######################################################
#now check for nesting of the activate/deactivate nodes
#######################################################
if ($action eq 'deactivate') {
my $active_dir = "$ENV{VYATTA_ACTIVE_CONFIGURATION_DIR}/$path";
my $local_dir = $full_path;
if (-e $active_dir) { #checks active children
find( \&wanted, $active_dir );
}
if (-e $local_dir) { #checks locally commit children, will remove disabled children
find( \&wanted_local, $local_dir );
}
#final check that walks up tree and checks
if (check_parents(@path)) { #checks active and locally committed parents
print("Cannot deactivate nested elements\n");
exit 1;
}
}
#######################################################
#prevent deactivate or activate to be applied with
#uncommitted changes
#######################################################
if (-e "$ENV{VYATTA_CHANGES_ONLY_DIR}/$path") {
opendir DIR, "$ENV{VYATTA_CHANGES_ONLY_DIR}/$path";
my @files = readdir DIR;
foreach my $d (@files) {
if ($d ne '.' && $d ne '..') {
print("Cannot $action modified elements, please commit your changes and then deactivate.\n");
closedir DIR;
exit 1;
}
}
closedir DIR;
}
#######################################################
#now apply the magic
#######################################################
if ($action eq 'activate') {
$full_path .= "/.disable";
if (-e $full_path) {
`rm -f $full_path`;
}
else {
printf("This element has not been deactivated\n");
exit 1;
}
}
elsif ($action eq 'deactivate') {
#first let's check and ensure that there is not another child .disable node...
#also needs to be enforced when committing
my $active_dir = "$ENV{VYATTA_ACTIVE_CONFIGURATION_DIR}/$path";
my $local_dir = $full_path;
if (-e "$active_dir/.disable" || -e "$local_dir/.disable") {
printf("This element has already been deactivated\n");
exit 1;
}
`touch $full_path/.disable`;
}
else {
printf("bad argument: " . $action . "\n");
usage();
}
`touch $ENV{VYATTA_TEMP_CONFIG_DIR}/.modified`;
exit 0;
|
