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d520da17045d2b037ea79b83d71b513e3f48840d
bpfire/config/cfgroot/general-functions.pl
Arne Fitzenreiter 45762fc662 general-functions: add function to convert ip/mask to ip/cidr.
2010-11-15 19:35:22 +01:00

692 lines
17 KiB
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# SmoothWall CGIs
#
# This code is distributed under the terms of the GPL
#
# (c) The SmoothWall Team
# Copyright (C) 2002 Alex Hudson - getcgihash() rewrite
# Copyright (C) 2002 Bob Grant <bob@cache.ucr.edu> - validmac()
# Copyright (c) 2002/04/13 Steve Bootes - add alias section, helper functions
# Copyright (c) 2002/08/23 Mark Wormgoor <mark@wormgoor.com> validfqdn()
# Copyright (c) 2003/09/11 Darren Critchley <darrenc@telus.net> srtarray()
#
# $Id: general-functions.pl,v 1.1.2.26 2006/01/04 16:33:55 franck78 Exp $
#
package General;
use strict;
use Socket;
use IO::Socket;
use Net::SSLeay;
use Net::IPv4Addr;
$|=1; # line buffering
$General::version = 'VERSION';
$General::swroot = 'CONFIG_ROOT';
$General::noipprefix = 'noipg-';
$General::adminmanualurl = 'http://wiki.ipfire.org';
#
# log ("message") use default 'ipcop' tag
# log ("tag","message") use your tag
#
sub log
{
my $tag='ipfire';
$tag = shift if (@_>1);
my $logmessage = $_[0];
$logmessage =~ /([\w\W]*)/;
$logmessage = $1;
system('logger', '-t', $tag, $logmessage);
}
sub readhash
{
my $filename = $_[0];
my $hash = $_[1];
my ($var, $val);
# Some ipcop code expects that readhash 'complete' the hash if new entries
# are presents. Not clear it !!!
#%$hash = ();
open(FILE, $filename) or die "Unable to read file $filename";
while (<FILE>)
{
chop;
($var, $val) = split /=/, $_, 2;
if ($var)
{
$val =~ s/^\'//g;
$val =~ s/\'$//g;
# Untaint variables read from hash
# trim space from begin and end
$var =~ s/^\s+//;
$var =~ s/\s+$//;
$var =~ /([A-Za-z0-9_-]*)/;
$var = $1;
$val =~ /([\w\W]*)/;
$val = $1;
$hash->{$var} = $val;
}
}
close FILE;
}
sub writehash
{
my $filename = $_[0];
my $hash = $_[1];
my ($var, $val);
# write cgi vars to the file.
open(FILE, ">${filename}") or die "Unable to write file $filename";
flock FILE, 2;
foreach $var (keys %$hash)
{
if ( $var eq "__CGI__"){next;}
$val = $hash->{$var};
# Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y
# location of the mouse are submitted as well, this was being written to the settings file causing
# some serious grief! This skips the variable.x and variable.y
if (!($var =~ /(.x|.y)$/)) {
if ($val =~ / /) {
$val = "\'$val\'"; }
if (!($var =~ /^ACTION/)) {
print FILE "${var}=${val}\n"; }
}
}
close FILE;
}
sub writehashpart
{
# This function replaces the given hash in the original hash by keeping the old
# content and just replacing the new content
my $filename = $_[0];
my $newhash = $_[1];
my %oldhash;
my ($var, $val);
readhash("${filename}", \%oldhash);
foreach $var (keys %$newhash){
$oldhash{$var}=$newhash->{$var};
}
# write cgi vars to the file.
open(FILE, ">${filename}") or die "Unable to write file $filename";
flock FILE, 2;
foreach $var (keys %oldhash)
{
if ( $var eq "__CGI__"){next;}
$val = $oldhash{$var};
# Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y
# location of the mouse are submitted as well, this was being written to the settings file causing
# some serious grief! This skips the variable.x and variable.y
if (!($var =~ /(.x|.y)$/)) {
if ($val =~ / /) {
$val = "\'$val\'"; }
if (!($var =~ /^ACTION/)) {
print FILE "${var}=${val}\n"; }
}
}
close FILE;
}
sub age
{
my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size,
$atime, $mtime, $ctime, $blksize, $blocks) = stat $_[0];
my $now = time;
my $totalsecs = $now - $mtime;
my $days = int($totalsecs / 86400);
my $totalhours = int($totalsecs / 3600);
my $hours = $totalhours % 24;
my $totalmins = int($totalsecs / 60);
my $mins = $totalmins % 60;
my $secs = $totalsecs % 60;
return "${days}d ${hours}h ${mins}m ${secs}s";
}
sub validip
{
my $ip = $_[0];
if (!($ip =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)) {
return 0; }
else
{
my @octets = ($1, $2, $3, $4);
foreach $_ (@octets)
{
if (/^0./) {
return 0; }
if ($_ < 0 || $_ > 255) {
return 0; }
}
return 1;
}
}
sub validmask
{
my $mask = $_[0];
# secord part an ip?
if (&validip($mask)) {
return 1; }
# second part a number?
if (/^0/) {
return 0; }
if (!($mask =~ /^\d+$/)) {
return 0; }
if ($mask >= 0 && $mask <= 32) {
return 1; }
return 0;
}
sub validipormask
{
my $ipormask = $_[0];
# see if it is a IP only.
if (&validip($ipormask)) {
return 1; }
# split it into number and mask.
if (!($ipormask =~ /^(.*?)\/(.*?)$/)) {
return 0; }
my $ip = $1;
my $mask = $2;
# first part not a ip?
if (!(&validip($ip))) {
return 0; }
return &validmask($mask);
}
sub validipandmask
{
my $ipandmask = $_[0];
# split it into number and mask.
if (!($ipandmask =~ /^(.*?)\/(.*?)$/)) {
return 0; }
my $ip = $1;
my $mask = $2;
# first part not a ip?
if (!(&validip($ip))) {
return 0; }
return &validmask($mask);
}
sub validport
{
$_ = $_[0];
if (!/^\d+$/) {
return 0; }
if (/^0./) {
return 0; }
if ($_ >= 1 && $_ <= 65535) {
return 1; }
return 0;
}
sub validproxyport
{
$_ = $_[0];
if (!/^\d+$/) {
return 0; }
if (/^0./) {
return 0; }
if ($_ == 53 || $_ == 222 || $_ == 444 || $_ == 81 ) {
return 0; }
elsif ($_ >= 1 && $_ <= 65535) {
return 1; }
return 0;
}
sub validmac
{
my $checkmac = $_[0];
my $ot = '[0-9a-f]{2}'; # 2 Hex digits (one octet)
if ($checkmac !~ /^$ot:$ot:$ot:$ot:$ot:$ot$/i)
{
return 0;
}
return 1;
}
sub validhostname
{
# Checks a hostname against RFC1035
my $hostname = $_[0];
# Each part should be at least two characters in length
# but no more than 63 characters
if (length ($hostname) < 1 || length ($hostname) > 63) {
return 0;}
# Only valid characters are a-z, A-Z, 0-9 and -
if ($hostname !~ /^[a-zA-Z0-9-]*$/) {
return 0;}
# First character can only be a letter or a digit
if (substr ($hostname, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
return 0;}
# Last character can only be a letter or a digit
if (substr ($hostname, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
return 0;}
return 1;
}
sub validdomainname
{
my $part;
# Checks a domain name against RFC1035
my $domainname = $_[0];
my @parts = split (/\./, $domainname); # Split hostname at the '.'
foreach $part (@parts) {
# Each part should be at least two characters in length
# but no more than 63 characters
if (length ($part) < 2 || length ($part) > 63) {
return 0;}
# Only valid characters are a-z, A-Z, 0-9 and -
if ($part !~ /^[a-zA-Z0-9-]*$/) {
return 0;}
# First character can only be a letter or a digit
if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
return 0;}
# Last character can only be a letter or a digit
if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
return 0;}
}
return 1;
}
sub validfqdn
{
my $part;
# Checks a fully qualified domain name against RFC1035
my $fqdn = $_[0];
my @parts = split (/\./, $fqdn); # Split hostname at the '.'
if (scalar(@parts) < 2) { # At least two parts should
return 0;} # exist in a FQDN
# (i.e. hostname.domain)
foreach $part (@parts) {
# Each part should be at least one character in length
# but no more than 63 characters
if (length ($part) < 1 || length ($part) > 63) {
return 0;}
# Only valid characters are a-z, A-Z, 0-9 and -
if ($part !~ /^[a-zA-Z0-9-]*$/) {
return 0;}
# First character can only be a letter or a digit
if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
return 0;}
# Last character can only be a letter or a digit
if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
return 0;}
}
return 1;
}
sub validportrange # used to check a port range
{
my $port = $_[0]; # port values
$port =~ tr/-/:/; # replace all - with colons just in case someone used -
my $srcdst = $_[1]; # is it a source or destination port
if (!($port =~ /^(\d+)\:(\d+)$/)) {
if (!(&validport($port))) {
if ($srcdst eq 'src'){
return $Lang::tr{'source port numbers'};
} else {
return $Lang::tr{'destination port numbers'};
}
}
}
else
{
my @ports = ($1, $2);
if ($1 >= $2){
if ($srcdst eq 'src'){
return $Lang::tr{'bad source range'};
} else {
return $Lang::tr{'bad destination range'};
}
}
foreach $_ (@ports)
{
if (!(&validport($_))) {
if ($srcdst eq 'src'){
return $Lang::tr{'source port numbers'};
} else {
return $Lang::tr{'destination port numbers'};
}
}
}
return;
}
}
# Test if IP is within a subnet
# Call: IpInSubnet (Addr, Subnet, Subnet Mask)
# Subnet can be an IP of the subnet: 10.0.0.0 or 10.0.0.1
# Everything in dottted notation
# Return: TRUE/FALSE
sub IpInSubnet
{
my $ip = unpack('N', &Socket::inet_aton(shift));
my $start = unpack('N', &Socket::inet_aton(shift));
my $mask = unpack('N', &Socket::inet_aton(shift));
$start &= $mask; # base of subnet...
my $end = $start + ~$mask;
return (($ip >= $start) && ($ip <= $end));
}
#
# Return the following IP (IP+1) in dotted notation.
# Call: NextIP ('1.1.1.1');
# Return: '1.1.1.2'
#
sub NextIP
{
return &Socket::inet_ntoa( pack("N", 1 + unpack('N', &Socket::inet_aton(shift))
)
);
}
sub ipcidr
{
my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift);
return "$ip\/$cidr";
}
sub validemail {
my $mail = shift;
return 0 if ( $mail !~ /^[0-9a-zA-Z\.\-\_]+\@[0-9a-zA-Z\.\-]+$/ );
return 0 if ( $mail =~ /^[^0-9a-zA-Z]|[^0-9a-zA-Z]$/);
return 0 if ( $mail !~ /([0-9a-zA-Z]{1})\@./ );
return 0 if ( $mail !~ /.\@([0-9a-zA-Z]{1})/ );
return 0 if ( $mail =~ /.\.\-.|.\-\..|.\.\..|.\-\-./g );
return 0 if ( $mail =~ /.\.\_.|.\-\_.|.\_\..|.\_\-.|.\_\_./g );
return 0 if ( $mail !~ /\.([a-zA-Z]{2,4})$/ );
return 1;
}
#
# Currently only vpnmain use this three procs (readhasharray, writehasharray, findhasharray)
# The 'key' used is numeric but is perfectly unneeded! This will to be removed so don't use
# this code. Vpnmain will be splitted in parts: x509/pki, connection ipsec, connection other,... .
#
sub readhasharray {
my ($filename, $hash) = @_;
%$hash = ();
open(FILE, $filename) or die "Unable to read file $filename";
while (<FILE>) {
my ($key, $rest, @temp);
chomp;
($key, $rest) = split (/,/, $_, 2);
if ($key =~ /^[0-9]+$/) {
@temp = split (/,/, $rest);
$hash->{$key} = \@temp;
}
}
close FILE;
return;
}
sub writehasharray {
my ($filename, $hash) = @_;
my ($key, @temp, $i);
open(FILE, ">$filename") or die "Unable to write to file $filename";
foreach $key (keys %$hash) {
if ($key =~ /^[0-9]+$/) {
print FILE "$key";
foreach $i (0 .. $#{$hash->{$key}}) {
print FILE ",$hash->{$key}[$i]";
}
print FILE "\n";
}
}
close FILE;
return;
}
sub findhasharraykey {
foreach my $i (1 .. 1000000) {
if ( ! exists $_[0]{$i}) {
return $i;
}
}
}
sub srtarray
# Darren Critchley - darrenc@telus.net - (c) 2003
# &srtarray(SortOrder, AlphaNumeric, SortDirection, ArrayToBeSorted)
# This subroutine will take the following parameters:
# ColumnNumber = the column which you want to sort on, starts at 1
# AlphaNumberic = a or n (lowercase) defines whether the sort should be alpha or numberic
# SortDirection = asc or dsc (lowercase) Ascending or Descending sort
# ArrayToBeSorted = the array that wants sorting
#
# Returns an array that is sorted to your specs
#
# If SortOrder is greater than the elements in array, then it defaults to the first element
#
{
my ($colno, $alpnum, $srtdir, @tobesorted) = @_;
my @tmparray;
my @srtedarray;
my $line;
my $newline;
my $ctr;
my $ttlitems = scalar @tobesorted; # want to know the number of rows in the passed array
if ($ttlitems < 1){ # if no items, don't waste our time lets leave
return (@tobesorted);
}
my @tmp = split(/\,/,$tobesorted[0]);
$ttlitems = scalar @tmp; # this should be the number of elements in each row of the passed in array
# Darren Critchley - validate parameters
if ($colno > $ttlitems){$colno = '1';}
$colno--; # remove one from colno to deal with arrays starting at 0
if($colno < 0){$colno = '0';}
if ($alpnum ne '') { $alpnum = lc($alpnum); } else { $alpnum = 'a'; }
if ($srtdir ne '') { $srtdir = lc($srtdir); } else { $srtdir = 'src'; }
foreach $line (@tobesorted)
{
chomp($line);
if ($line ne '') {
my @temp = split(/\,/,$line);
# Darren Critchley - juggle the fields so that the one we want to sort on is first
my $tmpholder = $temp[0];
$temp[0] = $temp[$colno];
$temp[$colno] = $tmpholder;
$newline = "";
for ($ctr=0; $ctr < $ttlitems ; $ctr++) {
$newline=$newline . $temp[$ctr] . ",";
}
chop($newline);
push(@tmparray,$newline);
}
}
if ($alpnum eq 'n') {
@tmparray = sort {$a <=> $b} @tmparray;
} else {
@tmparray = (sort @tmparray);
}
foreach $line (@tmparray)
{
chomp($line);
if ($line ne '') {
my @temp = split(/\,/,$line);
my $tmpholder = $temp[0];
$temp[0] = $temp[$colno];
$temp[$colno] = $tmpholder;
$newline = "";
for ($ctr=0; $ctr < $ttlitems ; $ctr++){
$newline=$newline . $temp[$ctr] . ",";
}
chop($newline);
push(@srtedarray,$newline);
}
}
if ($srtdir eq 'dsc') {
@tmparray = reverse(@srtedarray);
return (@tmparray);
} else {
return (@srtedarray);
}
}
sub FetchPublicIp {
my %proxysettings;
&General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
Net::SSLeay::set_proxy($peer,$peerport,$proxysettings{'UPSTREAM_USER'},$proxysettings{'UPSTREAM_PASSWORD'} );
}
my ($out, $response) = Net::SSLeay::get_http( 'checkip.dyndns.org',
80,
"/",
Net::SSLeay::make_headers('User-Agent' => 'IPFire' )
);
if ($response =~ m%HTTP/1\.. 200 OK%) {
$out =~ /Current IP Address: (\d+.\d+.\d+.\d+)/;
return $1;
}
return '';
}
#
# Check if hostname.domain provided have IP provided
# use gethostbyname to verify that
# Params:
# IP
# hostname
# domain
# Output
# 1 IP matches host.domain
# 0 not in sync
#
sub DyndnsServiceSync ($;$;$) {
my ($ip,$hostName,$domain) = @_;
my @addresses;
#fix me no ip GROUP, what is the name ?
$hostName =~ s/$General::noipprefix//;
if ($hostName) { #may be empty
$hostName = "$hostName.$domain";
@addresses = gethostbyname($hostName);
}
if ($addresses[0] eq '') { # nothing returned ?
$hostName = $domain; # try resolving with domain only
@addresses = gethostbyname($hostName);
}
if ($addresses[0] ne '') { # got something ?
#&General::log("name:$addresses[0], alias:$addresses[1]");
# Build clear text list of IP
@addresses = map ( &Socket::inet_ntoa($_), @addresses[4..$#addresses]);
if (grep (/$ip/, @addresses)) {
return 1;
}
}
return 0;
}
#
# This sub returns the red IP used to compare in DyndnsServiceSync
#
sub GetDyndnsRedIP {
my %settings;
&General::readhash("${General::swroot}/ddns/settings", \%settings);
open(IP, "${General::swroot}/red/local-ipaddress") or return 'unavailable';
my $ip = <IP>;
close(IP);
chomp $ip;
if (&General::IpInSubnet ($ip,'10.0.0.0','255.0.0.0') ||
&General::IpInSubnet ($ip,'172.16.0.0.','255.240.0.0') ||
&General::IpInSubnet ($ip,'192.168.0.0','255.255.0.0'))
{
if ($settings{'BEHINDROUTER'} eq 'FETCH_IP') {
my $RealIP = &General::FetchPublicIp;
$ip = (&General::validip ($RealIP) ? $RealIP : 'unavailable');
}
}
return $ip;
}
# Translate ICMP code to text
# ref: http://www.iana.org/assignments/icmp-parameters
sub GetIcmpDescription ($) {
my $index = shift;
my @icmp_description = (
'Echo Reply', #0
'Unassigned',
'Unassigned',
'Destination Unreachable',
'Source Quench',
'Redirect',
'Alternate Host Address',
'Unassigned',
'Echo',
'Router Advertisement',
'Router Solicitation', #10
'Time Exceeded',
'Parameter Problem',
'Timestamp',
'Timestamp Reply',
'Information Request',
'Information Reply',
'Address Mask Request',
'Address Mask Reply',
'Reserved (for Security)',
'Reserved (for Robustness Experiment)', #20
'Reserved',
'Reserved',
'Reserved',
'Reserved',
'Reserved',
'Reserved',
'Reserved',
'Reserved',
'Reserved',
'Traceroute', #30
'Datagram Conversion Error',
'Mobile Host Redirect',
'IPv6 Where-Are-You',
'IPv6 I-Am-Here',
'Mobile Registration Request',
'Mobile Registration Reply',
'Domain Name Request',
'Domain Name Reply',
'SKIP',
'Photur', #40
'Experimental');
if ($index>41) {return 'unknown'} else {return @icmp_description[$index]};
}
1;
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