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#!/usr/bin/perl
use lib "/opt/vyatta/share/perl5/";
use VyattaConfig;
use VyattaMisc;
use Getopt::Long;
$VTYSH='/opt/vyatta/sbin/vyatta-vtysh.pl';
GetOptions("update-access-list=s" => \$accesslist,
"update-aspath-list=s" => \$aspathlist,
"update-community-list=s" => \$communitylist,
"check-peer-syntax=s" => \$peer,
"check-routemap-action=s" => \$routemap,
);
if (defined $accesslist) { update_access_list($accesslist); }
if (defined $aspathlist) { update_as_path($aspathlist); }
if (defined $communitylist) { update_community_list($communitylist); }
if (defined $peer) { check_peer_syntax($peer); }
if (defined $routemap) { check_routemap_action($routemap); }
exit 0;
sub numerically { $a <=> $b; }
sub check_peer_syntax() {
my $peer = shift;
$_ = $peer;
if (/^local$/) { exit 0; }
if (isIpAddress("$peer")) { exit 0; }
exit 1;
}
sub is_community_list {
my $list = shift;
my $count = `$VTYSH -c \"show ip community-list $list\" | grep $list | wc -l`;
if ($count > 0) {
return 1;
} else {
return 0;
}
}
sub update_community_list() {
my $num = shift;
my $config = new VyattaConfig;
my @rules = ();
my $rule;
# remove the old rule
if (is_community_list($num)) {
system("$VTYSH -c \"configure terminal\" -c \"no ip community-list $num\" ");
}
$config->setLevel("policy community-list $num rule");
@rules = $config->listNodes();
foreach $rule (sort numerically @rules) {
my $action, $regex = '';
# set the action
$action = $config->returnValue("$rule action");
if (! defined $action) {
print "You must specify an action for as-path-list $list rule $rule\n";
exit 1;
}
# grab the regex
if (defined $config->returnValue("$rule regex")) {
$regex = $config->returnValue("$rule regex");
}
else {
print "You must specify a regex for community-list $list rule $rule\n";
exit 1;
}
system ("$VTYSH -c \"configure terminal\" -c \"ip community-list $num $action $regex\" ");
}
exit 0;
}
sub is_as_path_list {
my $list = shift;
my $count = `$VTYSH -c \"show ip as-path-access-list $list\" | grep $list | wc -l`;
if ($count > 0) {
return 1;
} else {
return 0;
}
}
sub update_as_path() {
my $word = shift;
my $config = new VyattaConfig;
my @rules = ();
my $rule;
# remove the old rule
if (is_as_path_list($word)) {
system("$VTYSH -c \"configure terminal\" -c \"no ip as-path access-list $word\" ");
}
$config->setLevel("policy as-path-list $word rule");
@rules = $config->listNodes();
foreach $rule (sort numerically @rules) {
my $action, $regex = '';
# set the action
$action = $config->returnValue("$rule action");
if (! defined $action) {
print "You must specify an action for as-path-list $list rule $rule\n";
exit 1;
}
# grab the regex
if (defined $config->returnValue("$rule regex")) {
$regex = $config->returnValue("$rule regex");
}
else {
print "You must specify a regex for as-path-list $list rule $rule\n";
exit 1;
}
system ("$VTYSH -c \"configure terminal\" -c \"ip as-path access-list $word $action $regex\" ");
}
exit 0;
}
sub is_access_list {
my $list = shift;
my $count = `$VTYSH -c \"show ip access-list $list\" | grep $list | wc -l`;
if ($count > 0) {
return 1;
} else {
return 0;
}
}
sub update_access_list() {
my $list = shift;
my $config = new VyattaConfig;
my @rules = ();
my $rule;
# remove the old rule if it already exists
if (is_access_list($list)) {
system ("$VTYSH -c \"configure terminal\" -c \"no access-list $list\" ");
}
$config->setLevel("policy access-list $list rule");
@rules = $config->listNodes();
foreach $rule (sort numerically @rules) {
my $ip, $action, $src, $dst, $srcmsk, $dstmsk = '';
# set the action
$action = $config->returnValue("$rule action");
if (! defined $action) {
print "You must specify an action for access-list $list rule $rule\n";
exit 1;
}
# TODO: ask someone why config->exists() is returning !0?
# set the source filter
if (defined $config->returnValue("$rule source host")) {
$src = $config->returnValue("$rule source host");
$src = "host " . $src;
}
elsif (defined $config->returnValue("$rule source network")) {
$src = $config->returnValue("$rule source network");
$srcmsk = $config->returnValue("$rule source inverse-mask");
}
else {
if ($config->exists("$rule source any")) { $src = "any"; }
else {
print "error in source section of access-list $list rule $rule\n";
exit 1;
}
}
# set the destination filter if extended list
if ((($list >= 100) && ($list <= 199)) || (($list >= 2000) && ($list <= 2699))) {
$ip = 'ip ';
# TODO: ask someone why config->exists() is returning !0?
if (defined $config->returnValue("$rule destination host")) {
$dst = $config->returnValue("$rule destination host");
$dst = "host " . $dst;
}
elsif (defined $config->returnValue("$rule destination network")) {
$dst = $config->returnValue("$rule destination network");
$dstmsk = $config->returnValue("$rule destination inverse-mask");
}
else {
if ($config->exists("$rule destination any")) { $dst = "any"; }
else {
print "error in destination section of access-list $list rule $rule\n";
exit 1;
}
}
}
system ("$VTYSH -c \"configure terminal\" -c \"access-list $list $action $ip $src $srcmsk $dst $dstmsk\" ");
}
exit 0;
}
## check_routemap_action
# check if the action has been changed since the last commit.
# we need to do this because quagga will wipe the entire config if
# the action is changed.
# $1 = policy route-map <name> rule <num>
sub check_routemap_action() {
my $routemap = shift;
my $config = new VyattaConfig;
my $action = $config->setLevel("$routemap");
my $origvalue = $config->returnOrigValue();
if ($origvalue) {
my $value = $config->returnValue();
if ("$value" ne "$origvalue") {
print "You can not change the action for $routemap.\n";
print "To change the action you must first delete the rule and commit it.\n\n";
exit 1;
}
}
exit 0;
}
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