config/cfgroot/general-functions.pl

   1 # SmoothWall CGIs
   2 #
   3 # This code is distributed under the terms of the GPL
   4 #
   5 # (c) The SmoothWall Team
   6 # Copyright (C) 2002 Alex Hudson - getcgihash() rewrite
   7 # Copyright (C) 2002 Bob Grant <bob@cache.ucr.edu> - validmac()
   8 # Copyright (c) 2002/04/13 Steve Bootes - add alias section, helper functions
   9 # Copyright (c) 2002/08/23 Mark Wormgoor <mark@wormgoor.com> validfqdn()
  10 # Copyright (c) 2003/09/11 Darren Critchley <darrenc@telus.net> srtarray()
  11 #
  12 # $Id: general-functions.pl,v 1.1.2.26 2006/01/04 16:33:55 franck78 Exp $
  13 #
  14
  15 package General;
  16
  17 use strict;
  18 use Socket;
  19 use IO::Socket;
  20 use Locale::Codes::Country;
  21 use Net::SSLeay;
  22 use Net::IPv4Addr qw(:all);
  23 $|=1; # line buffering
  24
  25 $General::version = 'VERSION';
  26 $General::swroot = 'CONFIG_ROOT';
  27 $General::noipprefix = 'noipg-';
  28 $General::adminmanualurl = 'http://wiki.ipfire.org';
  29
  30 require "${General::swroot}/network-functions.pl";
  31
  32 #
  33 # log ("message") use default 'ipcop' tag
  34 # log ("tag","message") use your tag
  35 #
  36 sub log
  37 {
  38         my $tag='ipfire';
  39         $tag = shift if (@_>1);
  40         my $logmessage = $_[0];
  41         $logmessage =~ /([\w\W]*)/;
  42         $logmessage = $1;
  43         system('logger', '-t', $tag, $logmessage);
  44 }
  45 sub setup_default_networks
  46 {
  47         my %netsettings=();
  48         my $defaultNetworks = shift;
  49
  50         &readhash("/var/ipfire/ethernet/settings", \%netsettings);
  51
  52         # Get current defined networks (Red, Green, Blue, Orange)
  53         $defaultNetworks->{$Lang::tr{'fwhost any'}}{'IPT'} = "0.0.0.0/0.0.0.0";
  54         $defaultNetworks->{$Lang::tr{'fwhost any'}}{'NAME'} = "ALL";
  55
  56         $defaultNetworks->{$Lang::tr{'green'}}{'IPT'} = "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}";
  57         $defaultNetworks->{$Lang::tr{'green'}}{'NET'} = "$netsettings{'GREEN_ADDRESS'}";
  58         $defaultNetworks->{$Lang::tr{'green'}}{'NAME'} = "GREEN";
  59
  60         if ($netsettings{'RED_DEV'} ne ''){
  61                 $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'IPT'} = "$netsettings{'RED_NETADDRESS'}/$netsettings{'RED_NETMASK'}";
  62                 $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'NET'} = "$netsettings{'RED_ADDRESS'}";
  63                 $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'NAME'} = "RED";
  64         }
  65         if ($netsettings{'ORANGE_DEV'} ne ''){
  66                 $defaultNetworks->{$Lang::tr{'orange'}}{'IPT'} = "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}";
  67                 $defaultNetworks->{$Lang::tr{'orange'}}{'NET'} = "$netsettings{'ORANGE_ADDRESS'}";
  68                 $defaultNetworks->{$Lang::tr{'orange'}}{'NAME'} = "ORANGE";
  69         }
  70
  71         if ($netsettings{'BLUE_DEV'} ne ''){
  72                 $defaultNetworks->{$Lang::tr{'blue'}}{'IPT'} = "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}";
  73                 $defaultNetworks->{$Lang::tr{'blue'}}{'NET'} = "$netsettings{'BLUE_ADDRESS'}";
  74                 $defaultNetworks->{$Lang::tr{'blue'}}{'NAME'} = "BLUE";
  75         }
  76
  77         #IPFire himself
  78         $defaultNetworks->{'IPFire'}{'NAME'} = "IPFire";
  79
  80         # OpenVPN
  81         if(-e "${General::swroot}/ovpn/settings")
  82         {
  83                 my %ovpnSettings = ();
  84                 &readhash("${General::swroot}/ovpn/settings", \%ovpnSettings);
  85
  86                 # OpenVPN on Red?
  87                 if(defined($ovpnSettings{'DOVPN_SUBNET'}))
  88                 {
  89                         my ($ip,$sub) = split(/\//,$ovpnSettings{'DOVPN_SUBNET'});
  90                         $sub=&General::iporsubtocidr($sub);
  91                         my @tempovpnsubnet = split("\/", $ovpnSettings{'DOVPN_SUBNET'});
  92                         $defaultNetworks->{'OpenVPN ' ."($ip/$sub)"}{'ADR'} = $tempovpnsubnet[0];
  93                         $defaultNetworks->{'OpenVPN ' ."($ip/$sub)"}{'NAME'} = "OpenVPN-Dyn";
  94                 }
  95         } # end OpenVPN
  96         # IPsec RW NET
  97         if(-e "${General::swroot}/vpn/settings")
  98         {
  99                 my %ipsecsettings = ();
 100                 &readhash("${General::swroot}/vpn/settings", \%ipsecsettings);
 101                 if($ipsecsettings{'RW_NET'} ne '')
 102                 {
 103                         my ($ip,$sub) = split(/\//,$ipsecsettings{'RW_NET'});
 104                         $sub=&General::iporsubtocidr($sub);
 105                         my @tempipsecsubnet = split("\/", $ipsecsettings{'RW_NET'});
 106                         $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'ADR'} = $tempipsecsubnet[0];
 107                         $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'NAME'} = "IPsec RW";
 108                         $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'NET'} = &getnextip($ip);
 109                 }
 110         }
 111 }
 112 sub get_aliases
 113 {
 114
 115         my $defaultNetworks = shift;
 116         open(FILE, "${General::swroot}/ethernet/aliases") or die 'Unable to open aliases file.';
 117         my @current = <FILE>;
 118         close(FILE);
 119         my $ctr = 0;
 120         foreach my $line (@current)
 121         {
 122                 if ($line ne ''){
 123                         chomp($line);
 124                         my @temp = split(/\,/,$line);
 125                         if ($temp[2] eq '') {
 126                                 $temp[2] = "Alias $ctr : $temp[0]";
 127                         }
 128                         $defaultNetworks->{$temp[2]}{'IPT'} = "$temp[0]";
 129                         $defaultNetworks->{$temp[2]}{'NET'} = "$temp[0]";
 130
 131                         $ctr++;
 132                 }
 133         }
 134 }
 135
 136 sub readhash
 137 {
 138         my $filename = $_[0];
 139         my $hash = $_[1];
 140         my ($var, $val);
 141
 142
 143         # Some ipcop code expects that readhash 'complete' the hash if new entries
 144         # are presents. Not clear it !!!
 145         #%$hash = ();
 146
 147         open(FILE, $filename) or die "Unable to read file $filename";
 148
 149         while (<FILE>)
 150         {
 151                 chop;
 152                 ($var, $val) = split /=/, $_, 2;
 153                 if ($var)
 154                 {
 155                         $val =~ s/^\'//g;
 156                         $val =~ s/\'$//g;
 157
 158                         # Untaint variables read from hash
 159                         # trim space from begin and end
 160                         $var =~ s/^\s+//;
 161                         $var =~ s/\s+$//;
 162                         $var =~ /([A-Za-z0-9_-]*)/;
 163                         $var = $1;
 164                         $val =~ /([\w\W]*)/;
 165                         $val = $1;
 166                         $hash->{$var} = $val;
 167                 }
 168         }
 169         close FILE;
 170 }
 171
 172
 173 sub writehash
 174 {
 175         my $filename = $_[0];
 176         my $hash = $_[1];
 177         my ($var, $val);
 178
 179         # write cgi vars to the file.
 180         open(FILE, ">${filename}") or die "Unable to write file $filename";
 181         flock FILE, 2;
 182         foreach $var (keys %$hash)
 183         {
 184                 if ( $var eq "__CGI__"){next;}
 185                 $val = $hash->{$var};
 186                 # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y
 187                 # location of the mouse are submitted as well, this was being written to the settings file causing
 188                 # some serious grief! This skips the variable.x and variable.y
 189                 if (!($var =~ /(.x|.y)$/)) {
 190                         if ($val =~ / /) {
 191                                 $val = "\'$val\'"; }
 192                         if (!($var =~ /^ACTION/)) {
 193                                 print FILE "${var}=${val}\n"; }
 194                 }
 195         }
 196         close FILE;
 197 }
 198
 199 sub writehashpart
 200 {
 201         # This function replaces the given hash in the original hash by keeping the old
 202         # content and just replacing the new content
 203
 204         my $filename = $_[0];
 205         my $newhash = $_[1];
 206         my %oldhash;
 207         my ($var, $val);
 208
 209         readhash("${filename}", \%oldhash);
 210
 211         foreach $var (keys %$newhash){
 212                 $oldhash{$var}=$newhash->{$var};
 213         }
 214
 215         # write cgi vars to the file.
 216         open(FILE, ">${filename}") or die "Unable to write file $filename";
 217         flock FILE, 2;
 218         foreach $var (keys %oldhash)
 219         {
 220                 if ( $var eq "__CGI__"){next;}
 221                 $val = $oldhash{$var};
 222                 # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y
 223                 # location of the mouse are submitted as well, this was being written to the settings file causing
 224                 # some serious grief! This skips the variable.x and variable.y
 225                 if (!($var =~ /(.x|.y)$/)) {
 226                         if ($val =~ / /) {
 227                                 $val = "\'$val\'"; }
 228                         if (!($var =~ /^ACTION/)) {
 229                                 print FILE "${var}=${val}\n"; }
 230                 }
 231         }
 232         close FILE;
 233 }
 234
 235 sub age {
 236         my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size,
 237                 $atime, $mtime, $ctime, $blksize, $blocks) = stat $_[0];
 238         my $totalsecs = time() - $mtime;
 239         my @s = ();
 240
 241         my $secs = $totalsecs % 60;
 242         $totalsecs /= 60;
 243         if ($secs > 0) {
 244                 push(@s, "${secs}s");
 245         }
 246
 247         my $min = $totalsecs % 60;
 248         $totalsecs /= 60;
 249         if ($min > 0) {
 250                 push(@s, "${min}m");
 251         }
 252
 253         my $hrs = $totalsecs % 24;
 254         $totalsecs /= 24;
 255         if ($hrs > 0) {
 256                 push(@s, "${hrs}h");
 257         }
 258
 259         my $days = int($totalsecs);
 260         if ($days > 0) {
 261                 push(@s, "${days}d");
 262         }
 263
 264         return join(" ", reverse(@s));
 265 }
 266
 267 sub validip
 268 {
 269         my $ip = $_[0];
 270
 271         if (!($ip =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)) {
 272                 return 0; }
 273         else
 274         {
 275                 my @octets = ($1, $2, $3, $4);
 276                 foreach $_ (@octets)
 277                 {
 278                         if (/^0./) {
 279                                 return 0; }
 280                         if ($_ < 0 || $_ > 255) {
 281                                 return 0; }
 282                 }
 283                 return 1;
 284         }
 285 }
 286
 287 sub validmask {
 288         my $mask = shift;
 289
 290         return &Network::check_netmask($mask) || &Network::check_prefix($mask);
 291 }
 292
 293 sub validipormask
 294 {
 295         my $ipormask = $_[0];
 296
 297         # see if it is a IP only.
 298         if (&validip($ipormask)) {
 299                 return 1; }
 300         # split it into number and mask.
 301         if (!($ipormask =~ /^(.*?)\/(.*?)$/)) {
 302                 return 0; }
 303         my $ip = $1;
 304         my $mask = $2;
 305         # first part not a ip?
 306         if (!(&validip($ip))) {
 307                 return 0; }
 308         return &validmask($mask);
 309 }
 310
 311 sub subtocidr {
 312         return &Network::convert_netmask2prefix(shift);
 313 }
 314
 315 sub cidrtosub {
 316         return &Network::convert_prefix2netmask(shift);
 317 }
 318
 319 sub iporsubtodec
 320 {
 321         #Gets: Ip address or subnetmask in decimal oder CIDR
 322         #Gives: What it gets only in CIDR format
 323         my $subnet=$_[0];
 324         my $net;
 325         my $mask;
 326         my $full=0;
 327         if ($subnet =~ /^(.*?)\/(.*?)$/) {
 328                 ($net,$mask) = split (/\//,$subnet);
 329                 $full=1;
 330                 return "$subnet";
 331         }else{
 332                 $mask=$subnet;
 333         }
 334         #Subnet already in decimal and valid?
 335         if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255  && $2<=$1 && $3<=$2  && $4<=$3 )))       {
 336                 for (my $i=0;$i<=32;$i++){
 337                         if (&General::cidrtosub($i) eq $mask){
 338                                 if ($full == 0){return $mask;}else{
 339                                                          return $net."/".$mask;
 340                                 }
 341                         }
 342                 }
 343         }
 344         #Subnet in binary format?
 345         if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=0))){
 346                         if($full == 0){ return &General::cidrtosub($mask);}else{
 347                                                  return $net."/".&General::cidrtosub($mask);
 348                         }
 349         }else{
 350                         return 3;
 351         }
 352         return 3;
 353 }
 354
 355
 356 sub iporsubtocidr
 357 {
 358         #gets: Ip Address  or subnetmask in decimal oder CIDR
 359         #Gives: What it gets only in CIDR format
 360         my $subnet=$_[0];
 361         my $net;
 362         my $mask;
 363         my $full=0;
 364         if ($subnet =~ /^(.*?)\/(.*?)$/) {
 365                 ($net,$mask) = split (/\//,$subnet);
 366                 $full=1;
 367         }else{
 368                 $mask=$subnet;
 369         }
 370         #Subnet in decimal and valid?
 371         if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255  && $2<=$1 && $3<=$2  && $4<=$3 )))       {
 372                 for (my $i=0;$i<=32;$i++){
 373                         if (&General::cidrtosub($i) eq $mask){
 374                                 if ($full == 0){return &General::subtocidr($mask);}else{
 375                                                          return $net."/".&General::subtocidr($mask);
 376                                 }
 377                         }
 378                 }
 379         }
 380         #Subnet already in binary format?
 381         if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=0))){
 382                         if($full == 0){ return $mask;}else{
 383                                                  return $net."/".$mask;
 384                         }
 385         }else{
 386                         return 3;
 387         }
 388         return 3;
 389 }
 390
 391 sub getnetworkip {
 392         my $arg = join("/", @_);
 393
 394         return &Network::get_netaddress($arg);
 395 }
 396
 397 sub getccdbc
 398 {
 399         #Gets: IP in Form ("192.168.0.0/24")
 400         #Gives: Broadcastaddress of network
 401         my $ccdnet=$_;
 402         my ($ccdip,$ccdsubnet) = split "/",$ccdnet;
 403         my $ip_address_binary = inet_aton( $ccdip );
 404         my $netmask_binary    = ~pack("N", (2**(32-$ccdsubnet))-1);
 405         my $broadcast_address  = inet_ntoa( $ip_address_binary | ~$netmask_binary );
 406         return $broadcast_address;
 407 }
 408
 409 sub ip2dec  {
 410         return &Network::ip2bin(shift);
 411 }
 412
 413 sub dec2ip  {
 414         return &Network::bin2ip(shift);
 415 }
 416
 417 sub getnextip {
 418         return &Network::find_next_ip_address(shift, 4);
 419 }
 420
 421 sub getlastip {
 422         return &Network::find_next_ip_address(shift, -1);
 423 }
 424
 425 sub validipandmask
 426 {
 427         #Gets: Ip address in 192.168.0.0/24 or 192.168.0.0/255.255.255.0 and checks if subnet valid
 428         #Gives: True bzw 0 if success or false
 429         my $ccdnet=$_[0];
 430         my $subcidr;
 431
 432         if (!($ccdnet =~ /^(.*?)\/(.*?)$/)) {
 433                 return 0;
 434         }
 435         my ($ccdip,$ccdsubnet)=split (/\//, $ccdnet);
 436         #IP valid?
 437         if ($ccdip=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1>0 && $1<=255 && $2>=0 && $2<=255 && $3>=0 && $3<=255 && $4<=255 ))) {
 438                 #Subnet in decimal and valid?
 439                 if ($ccdsubnet=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255  && $2<=$1 && $3<=$2  && $4<=$3 )))  {
 440                         for (my $i=0;$i<=32;$i++){
 441                                 if (&General::cidrtosub($i) eq $ccdsubnet){
 442                                         return 1;
 443                                 }
 444                         }
 445                 #Subnet already in binary format?
 446                 }elsif ($ccdsubnet=~/^(\d{1,2})$/ && (($1<=32 && $1>=0))){
 447                         return 1;
 448                 }else{
 449                         return 0;
 450                 }
 451
 452         }
 453         return 0;
 454 }
 455
 456 sub checksubnets
 457 {
 458         my %ccdconfhash=();
 459         my %ovpnconfhash=();
 460         my %vpnconf=();
 461         my %ipsecconf=();
 462         my %ownnet=();
 463         my %ovpnconf=();
 464         my @ccdconf=();
 465         my $ccdname=$_[0];
 466         my $ccdnet=$_[1];
 467         my $ownnet=$_[2];
 468         my $errormessage;
 469         my ($ip,$cidr)=split(/\//,$ccdnet);
 470         $cidr=&iporsubtocidr($cidr);
 471
 472         #get OVPN-Subnet (dynamic range)
 473         &readhash("${General::swroot}/ovpn/settings", \%ovpnconf);
 474         my ($ovpnip,$ovpncidr)= split (/\//,$ovpnconf{'DOVPN_SUBNET'});
 475         $ovpncidr=&iporsubtocidr($ovpncidr);
 476
 477         #check if we try to use same network as ovpn server
 478         if ("$ip/$cidr" eq "$ovpnip/$ovpncidr") {
 479                         $errormessage=$errormessage.$Lang::tr{'ccd err isovpnnet'}."<br>";
 480                         return $errormessage;
 481         }
 482
 483         #check if we try to use same network as another ovpn N2N
 484         if($ownnet ne 'ovpn'){
 485                 &readhasharray("${General::swroot}/ovpn/ovpnconfig", \%ovpnconfhash);
 486                 foreach my $key (keys %ovpnconfhash) {
 487                         if ($ovpnconfhash{$key}[3] eq 'net'){
 488                                 my @ovpnnet=split (/\//,$ovpnconfhash{$key}[11]);
 489                                 if (&IpInSubnet($ip,$ovpnnet[0],&iporsubtodec($ovpnnet[1]))){
 490                                         $errormessage=$errormessage.$Lang::tr{'ccd err isovpnn2n'}." $ovpnconfhash{$key}[1] <br>";
 491                                         return $errormessage;
 492                                 }
 493                         }
 494                 }
 495         }
 496
 497         #check if we use a network-name/subnet (static-ovpn) that already exists
 498         &readhasharray("${General::swroot}/ovpn/ccd.conf", \%ccdconfhash);
 499         foreach my $key (keys %ccdconfhash) {
 500                 @ccdconf=split(/\//,$ccdconfhash{$key}[1]);
 501                 if ($ccdname eq $ccdconfhash{$key}[0])
 502                 {
 503                         $errormessage=$errormessage.$Lang::tr{'ccd err nameexist'}."<br>";
 504                         return $errormessage;
 505                 }
 506                 my ($newip,$newsub) = split(/\//,$ccdnet);
 507                 if (&IpInSubnet($newip,$ccdconf[0],&iporsubtodec($ccdconf[1])))
 508                 {
 509                         $errormessage=$errormessage.$Lang::tr{'ccd err issubnet'}." $ccdconfhash{$key}[0]<br>";
 510                         return $errormessage;
 511                 }
 512         }
 513
 514         #check if we use a ipsec right network which is already defined
 515         if($ownnet ne 'ipsec'){
 516                 &General::readhasharray("${General::swroot}/vpn/config", \%ipsecconf);
 517                 foreach my $key (keys %ipsecconf){
 518                         if ($ipsecconf{$key}[11] ne ''){
 519                                 foreach my $ipsecsubitem (split(/\|/, $ipsecconf{$key}[11])) {
 520                                         my ($ipsecip,$ipsecsub) = split (/\//, $ipsecconf{$key}[11]);
 521                                         $ipsecsub=&iporsubtodec($ipsecsub);
 522                                         if($ipsecconf{$key}[1] ne $ccdname){
 523                                                 if ( &IpInSubnet ($ip,$ipsecip,$ipsecsub) ){
 524                                                         $errormessage=$Lang::tr{'ccd err isipsecnet'}." Name:  $ipsecconf{$key}[1]";
 525                                                         return $errormessage;
 526                                                 }
 527                                         }
 528                                 }
 529                         }
 530                 }
 531         }
 532
 533         #check if we use the ipsec RW Network (if defined)
 534         &readhash("${General::swroot}/vpn/settings", \%vpnconf);
 535         if ($vpnconf{'RW_NET'} ne ''){
 536                 my ($ipsecrwnet,$ipsecrwsub)=split (/\//, $vpnconf{'RW_NET'});
 537                 if (&IpInSubnet($ip,$ipsecrwnet,&iporsubtodec($ipsecrwsub)))
 538                 {
 539                         $errormessage=$errormessage.$Lang::tr{'ccd err isipsecrw'}."<br>";
 540                         return $errormessage;
 541                 }
 542         }
 543
 544         #check if we use one of ipfire's networks (green,orange,blue)
 545         &readhash("${General::swroot}/ethernet/settings", \%ownnet);
 546         if (($ownnet{'GREEN_NETADDRESS'}        ne '' && $ownnet{'GREEN_NETADDRESS'}    ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'GREEN_NETADDRESS'},&iporsubtodec($ownnet{'GREEN_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err green'};return $errormessage;}
 547         if (($ownnet{'ORANGE_NETADDRESS'}       ne '' && $ownnet{'ORANGE_NETADDRESS'}   ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'ORANGE_NETADDRESS'},&iporsubtodec($ownnet{'ORANGE_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err orange'};return $errormessage;}
 548         if (($ownnet{'BLUE_NETADDRESS'}         ne '' && $ownnet{'BLUE_NETADDRESS'}     ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'BLUE_NETADDRESS'},&iporsubtodec($ownnet{'BLUE_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err blue'};return $errormessage;}
 549         if (($ownnet{'RED_NETADDRESS'}          ne '' && $ownnet{'RED_NETADDRESS'}              ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'RED_NETADDRESS'},&iporsubtodec($ownnet{'RED_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err red'};return $errormessage;}
 550 }
 551
 552 sub check_net_internal{
 553         my $network=shift;
 554         my ($ip,$cidr)=split(/\//,$network);
 555         my %ownnet=();
 556         my $errormessage;
 557         $cidr=&iporsubtocidr($cidr);
 558         #check if we use one of ipfire's networks (green,orange,blue)
 559         &readhash("${General::swroot}/ethernet/settings", \%ownnet);
 560         if (($ownnet{'GREEN_NETADDRESS'}        ne '' && $ownnet{'GREEN_NETADDRESS'}    ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'GREEN_NETADDRESS'},&iporsubtodec($ownnet{'GREEN_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err green'};return $errormessage;}
 561         if (($ownnet{'ORANGE_NETADDRESS'}       ne '' && $ownnet{'ORANGE_NETADDRESS'}   ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'ORANGE_NETADDRESS'},&iporsubtodec($ownnet{'ORANGE_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err orange'};return $errormessage;}
 562         if (($ownnet{'BLUE_NETADDRESS'}         ne '' && $ownnet{'BLUE_NETADDRESS'}     ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'BLUE_NETADDRESS'},&iporsubtodec($ownnet{'BLUE_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err blue'};return $errormessage;}
 563         if (($ownnet{'RED_NETADDRESS'}          ne '' && $ownnet{'RED_NETADDRESS'}              ne '0.0.0.0') && &IpInSubnet($ip,$ownnet{'RED_NETADDRESS'},&iporsubtodec($ownnet{'RED_NETMASK'}))){ $errormessage=$Lang::tr{'ccd err red'};return $errormessage;}
 564 }
 565
 566 sub validport
 567 {
 568         $_ = $_[0];
 569
 570         if (!/^\d+$/) {
 571                 return 0; }
 572         if (/^0./) {
 573                 return 0; }
 574         if ($_ >= 1 && $_ <= 65535) {
 575                 return 1; }
 576         return 0;
 577 }
 578
 579 sub validproxyport
 580 {
 581         $_ = $_[0];
 582
 583         if (!/^\d+$/) {
 584                 return 0; }
 585         if (/^0./) {
 586                 return 0; }
 587         if ($_ == 53 || $_ == 222 || $_ == 444 || $_ == 81 ) {
 588                 return 0; }
 589         elsif ($_ >= 1 && $_ <= 65535) {
 590                 return 1; }
 591         return 0;
 592 }
 593
 594 sub validmac
 595 {
 596         my $checkmac = $_[0];
 597         my $ot = '[0-9a-f]{2}'; # 2 Hex digits (one octet)
 598         if ($checkmac !~ /^$ot:$ot:$ot:$ot:$ot:$ot$/i)
 599         {
 600                 return 0;
 601         }
 602         return 1;
 603 }
 604
 605 sub validhostname
 606 {
 607         # Checks a hostname against RFC1035
 608         my $hostname = $_[0];
 609
 610         # Each part should be at least two characters in length
 611         # but no more than 63 characters
 612         if (length ($hostname) < 1 || length ($hostname) > 63) {
 613                 return 0;}
 614         # Only valid characters are a-z, A-Z, 0-9 and -
 615         if ($hostname !~ /^[a-zA-Z0-9-\s]*$/) {
 616                 return 0;}
 617         # First character can only be a letter or a digit
 618         if (substr ($hostname, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
 619                 return 0;}
 620         # Last character can only be a letter or a digit
 621         if (substr ($hostname, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
 622                 return 0;}
 623         return 1;
 624 }
 625
 626 sub validdomainname
 627 {
 628         my $part;
 629
 630         # Checks a domain name against RFC1035
 631         my $domainname = $_[0];
 632         my @parts = split (/\./, $domainname);  # Split hostname at the '.'
 633
 634         foreach $part (@parts) {
 635                 # Each part should be no more than 63 characters in length
 636                 if (length ($part) < 1 || length ($part) > 63) {
 637                         return 0;}
 638                 # Only valid characters are a-z, A-Z, 0-9, _ and -
 639                 if ($part !~ /^[a-zA-Z0-9_-]*$/) {
 640                         return 0;
 641                 }
 642         }
 643         return 1;
 644 }
 645
 646 sub validfqdn
 647 {
 648         my $part;
 649
 650         # Checks a fully qualified domain name against RFC1035
 651         my $fqdn = $_[0];
 652         my @parts = split (/\./, $fqdn);        # Split hostname at the '.'
 653         if (scalar(@parts) < 2) {               # At least two parts should
 654                 return 0;}                      # exist in a FQDN
 655                                                 # (i.e.hostname.domain)
 656         foreach $part (@parts) {
 657                 # Each part should be at least one character in length
 658                 # but no more than 63 characters
 659                 if (length ($part) < 1 || length ($part) > 63) {
 660                         return 0;}
 661                 # Only valid characters are a-z, A-Z, 0-9 and -
 662                 if ($part !~ /^[a-zA-Z0-9-]*$/) {
 663                         return 0;}
 664                 # First character can only be a letter or a digit
 665                 if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
 666                         return 0;}
 667                 # Last character can only be a letter or a digit
 668                 if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
 669                         return 0;}
 670         }
 671         return 1;
 672 }
 673
 674 sub validportrange # used to check a port range
 675 {
 676         my $port = $_[0]; # port values
 677         $port =~ tr/-/:/; # replace all - with colons just in case someone used -
 678         my $srcdst = $_[1]; # is it a source or destination port
 679
 680         if (!($port =~ /^(\d+)\:(\d+)$/)) {
 681
 682                 if (!(&validport($port))) {
 683                         if ($srcdst eq 'src'){
 684                                 return $Lang::tr{'source port numbers'};
 685                         } else  {
 686                                 return $Lang::tr{'destination port numbers'};
 687                         }
 688                 }
 689         }
 690         else
 691         {
 692                 my @ports = ($1, $2);
 693                 if ($1 >= $2){
 694                         if ($srcdst eq 'src'){
 695                                 return $Lang::tr{'bad source range'};
 696                         } else  {
 697                                 return $Lang::tr{'bad destination range'};
 698                         }
 699                 }
 700                 foreach $_ (@ports)
 701                 {
 702                         if (!(&validport($_))) {
 703                                 if ($srcdst eq 'src'){
 704                                         return $Lang::tr{'source port numbers'};
 705                                 } else  {
 706                                         return $Lang::tr{'destination port numbers'};
 707                                 }
 708                         }
 709                 }
 710                 return;
 711         }
 712 }
 713
 714 sub IpInSubnet {
 715         my $addr = shift;
 716         my $network = shift;
 717         my $netmask = shift;
 718
 719         return &Network::ip_address_in_network($addr, "$network/$netmask");
 720 }
 721
 722 #
 723 # Return the following IP (IP+1) in dotted notation.
 724 # Call: NextIP ('1.1.1.1');
 725 # Return: '1.1.1.2'
 726 #
 727 sub NextIP {
 728         return &Network::find_next_ip_address(shift, 1);
 729 }
 730
 731 sub NextIP2 {
 732         return &Network::find_next_ip_address(shift, 4);
 733 }
 734
 735 sub ipcidr {
 736         my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift);
 737         return "$ip\/$cidr";
 738 }
 739
 740 sub ipcidr2msk {
 741        my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift);
 742        my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr);
 743        return "$ip\/$netmask";
 744 }
 745
 746 sub validemail {
 747     my $address = shift;
 748     my @parts = split( /\@/, $address );
 749     my $count=@parts;
 750
 751     #check if we have one part before and after '@'
 752     return 0 if ( $count != 2 );
 753
 754     #check if one of the parts starts or ends with a dot
 755     return 0 if ( substr($parts[0],0,1) eq '.' );
 756     return 0 if ( substr($parts[0],-1,1) eq '.' );
 757     return 0 if ( substr($parts[1],0,1) eq '.' );
 758     return 0 if ( substr($parts[1],-1,1) eq '.' );
 759
 760     #check first addresspart (before '@' sign)
 761     return 0 if  ( $parts[0] !~ m/^[a-zA-Z0-9\.!\-\+#]+$/ );
 762
 763     #check second addresspart (after '@' sign)
 764     return 0 if  ( $parts[1] !~ m/^[a-zA-Z0-9\.\-]+$/ );
 765
 766     return 1;
 767 }
 768
 769 #
 770 # Currently only vpnmain use this three procs (readhasharray, writehasharray, findhasharray)
 771 # The 'key' used is numeric but is perfectly unneeded! This will to be removed so don't use
 772 # this code. Vpnmain will be splitted in parts: x509/pki, connection ipsec, connection other,... .
 773 #
 774 sub readhasharray {
 775     my ($filename, $hash) = @_;
 776     %$hash = ();
 777
 778     open(FILE, $filename) or die "Unable to read file $filename";
 779
 780     while (<FILE>) {
 781         my ($key, $rest, @temp);
 782         chomp;
 783         ($key, $rest) = split (/,/, $_, 2);
 784         if ($key =~ /^[0-9]+$/) {
 785             @temp = split (/,/, $rest);
 786             $hash->{$key} = \@temp;
 787         }
 788     }
 789     close FILE;
 790     return;
 791 }
 792
 793 sub writehasharray {
 794     my ($filename, $hash) = @_;
 795     my ($key, @temp, $i);
 796
 797     open(FILE, ">$filename") or die "Unable to write to file $filename";
 798
 799     foreach $key (keys %$hash) {
 800                 if ($key =~ /^[0-9]+$/) {
 801                         print FILE "$key";
 802                         foreach $i (0 .. $#{$hash->{$key}}) {
 803                                 print FILE ",$hash->{$key}[$i]";
 804                         }
 805                         print FILE "\n";
 806                 }
 807     }
 808     close FILE;
 809     return;
 810 }
 811
 812 sub findhasharraykey {
 813     foreach my $i (1 .. 1000000) {
 814         if ( ! exists $_[0]{$i}) {
 815              return $i;
 816         }
 817     }
 818 }
 819
 820 sub srtarray
 821 # Darren Critchley - darrenc@telus.net - (c) 2003
 822 # &srtarray(SortOrder, AlphaNumeric, SortDirection, ArrayToBeSorted)
 823 # This subroutine will take the following parameters:
 824 #   ColumnNumber = the column which you want to sort on, starts at 1
 825 #   AlphaNumberic = a or n (lowercase) defines whether the sort should be alpha or numberic
 826 #   SortDirection = asc or dsc (lowercase) Ascending or Descending sort
 827 #   ArrayToBeSorted = the array that wants sorting
 828 #
 829 #   Returns an array that is sorted to your specs
 830 #
 831 #   If SortOrder is greater than the elements in array, then it defaults to the first element
 832 #
 833 {
 834         my ($colno, $alpnum, $srtdir, @tobesorted) = @_;
 835         my @tmparray;
 836         my @srtedarray;
 837         my $line;
 838         my $newline;
 839         my $ctr;
 840         my $ttlitems = scalar @tobesorted; # want to know the number of rows in the passed array
 841         if ($ttlitems < 1){ # if no items, don't waste our time lets leave
 842                 return (@tobesorted);
 843         }
 844         my @tmp = split(/\,/,$tobesorted[0]);
 845         $ttlitems = scalar @tmp; # this should be the number of elements in each row of the passed in array
 846
 847         # Darren Critchley - validate parameters
 848         if ($colno > $ttlitems){$colno = '1';}
 849         $colno--; # remove one from colno to deal with arrays starting at 0
 850         if($colno < 0){$colno = '0';}
 851         if ($alpnum ne '') { $alpnum = lc($alpnum); } else { $alpnum = 'a'; }
 852         if ($srtdir ne '') { $srtdir = lc($srtdir); } else { $srtdir = 'src'; }
 853
 854         foreach $line (@tobesorted)
 855         {
 856                 chomp($line);
 857                 if ($line ne '') {
 858                         my @temp = split(/\,/,$line);
 859                         # Darren Critchley - juggle the fields so that the one we want to sort on is first
 860                         my $tmpholder = $temp[0];
 861                         $temp[0] = $temp[$colno];
 862                         $temp[$colno] = $tmpholder;
 863                         $newline = "";
 864                         for ($ctr=0; $ctr < $ttlitems ; $ctr++) {
 865                                 $newline=$newline . $temp[$ctr] . ",";
 866                         }
 867                         chop($newline);
 868                         push(@tmparray,$newline);
 869                 }
 870         }
 871         if ($alpnum eq 'n') {
 872                 @tmparray = sort {$a <=> $b} @tmparray;
 873         } else {
 874                 @tmparray = (sort @tmparray);
 875         }
 876         foreach $line (@tmparray)
 877         {
 878                 chomp($line);
 879                 if ($line ne '') {
 880                         my @temp = split(/\,/,$line);
 881                         my $tmpholder = $temp[0];
 882                         $temp[0] = $temp[$colno];
 883                         $temp[$colno] = $tmpholder;
 884                         $newline = "";
 885                         for ($ctr=0; $ctr < $ttlitems ; $ctr++){
 886                                 $newline=$newline . $temp[$ctr] . ",";
 887                         }
 888                         chop($newline);
 889                         push(@srtedarray,$newline);
 890                 }
 891         }
 892
 893         if ($srtdir eq 'dsc') {
 894                 @tmparray = reverse(@srtedarray);
 895                 return (@tmparray);
 896         } else {
 897                 return (@srtedarray);
 898         }
 899 }
 900
 901 sub FetchPublicIp {
 902     my %proxysettings;
 903     &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 904     if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 905         my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 906         Net::SSLeay::set_proxy($peer,$peerport,$proxysettings{'UPSTREAM_USER'},$proxysettings{'UPSTREAM_PASSWORD'} );
 907     }
 908     my $user_agent = &MakeUserAgent();
 909     my ($out, $response) = Net::SSLeay::get_http(  'checkip4.dns.lightningwirelabs.com',
 910                                                     80,
 911                                                     "/",
 912                                                     Net::SSLeay::make_headers('User-Agent' => $user_agent )
 913                                                 );
 914     if ($response =~ m%HTTP/1\.. 200 OK%) {
 915         $out =~ /Your IP address is: (\d+.\d+.\d+.\d+)/;
 916         return $1;
 917     }
 918     return '';
 919 }
 920
 921 #
 922 # Check if hostname.domain provided have IP provided
 923 # use gethostbyname to verify that
 924 # Params:
 925 #       IP
 926 #       hostname
 927 #       domain
 928 # Output
 929 #       1 IP matches host.domain
 930 #       0 not in sync
 931 #
 932 sub DyndnsServiceSync ($;$;$) {
 933
 934     my ($ip,$hostName,$domain) = @_;
 935     my @addresses;
 936
 937     #fix me no ip GROUP, what is the name ?
 938     $hostName =~ s/$General::noipprefix//;
 939     if ($hostName) { #may be empty
 940         $hostName = "$hostName.$domain";
 941         @addresses = gethostbyname($hostName);
 942     }
 943
 944     if ($addresses[0] eq '') {                  # nothing returned ?
 945         $hostName = $domain;                    # try resolving with domain only
 946         @addresses = gethostbyname($hostName);
 947     }
 948
 949     if ($addresses[0] ne '') {                  # got something ?
 950         #&General::log("name:$addresses[0], alias:$addresses[1]");
 951         # Build clear text list of IP
 952         @addresses = map ( &Socket::inet_ntoa($_), @addresses[4..$#addresses]);
 953         if (grep (/$ip/, @addresses)) {
 954             return 1;
 955         }
 956     }
 957     return 0;
 958 }
 959 #
 960 # This sub returns the red IP used to compare in DyndnsServiceSync
 961 #
 962 sub GetDyndnsRedIP {
 963     my %settings;
 964     &General::readhash("${General::swroot}/ddns/settings", \%settings);
 965
 966     open(IP, "${General::swroot}/red/local-ipaddress") or return 'unavailable';
 967     my $ip = <IP>;
 968     close(IP);
 969     chomp $ip;
 970
 971     # 100.64.0.0/10 is reserved for dual-stack lite (http://tools.ietf.org/html/rfc6598).
 972     if (&General::IpInSubnet ($ip,'10.0.0.0','255.0.0.0') ||
 973         &General::IpInSubnet ($ip,'172.16.0.0.','255.240.0.0') ||
 974         &General::IpInSubnet ($ip,'192.168.0.0','255.255.0.0') ||
 975         &General::IpInSubnet ($ip,'100.64.0.0', '255.192.0.0'))
 976     {
 977         if ($settings{'BEHINDROUTER'} eq 'FETCH_IP') {
 978             my $RealIP = &General::FetchPublicIp;
 979             $ip = (&General::validip ($RealIP) ?  $RealIP : 'unavailable');
 980         }
 981     }
 982     return $ip;
 983 }
 984
 985 # Translate ICMP code to text
 986 # ref: http://www.iana.org/assignments/icmp-parameters
 987 sub GetIcmpDescription ($) {
 988     my $index = shift;
 989     my @icmp_description = (
 990     'Echo Reply',                       #0
 991     'Unassigned',
 992     'Unassigned',
 993     'Destination Unreachable',
 994     'Source Quench',
 995     'Redirect',
 996     'Alternate Host Address',
 997     'Unassigned',
 998     'Echo',
 999     'Router Advertisement',
1000     'Router Solicitation',              #10
1001     'Time Exceeded',
1002     'Parameter Problem',
1003     'Timestamp',
1004     'Timestamp Reply',
1005     'Information Request',
1006     'Information Reply',
1007     'Address Mask Request',
1008     'Address Mask Reply',
1009     'Reserved (for Security)',
1010     'Reserved (for Robustness Experiment)', #20
1011     'Reserved',
1012     'Reserved',
1013     'Reserved',
1014     'Reserved',
1015     'Reserved',
1016     'Reserved',
1017     'Reserved',
1018     'Reserved',
1019     'Reserved',
1020     'Traceroute',                               #30
1021     'Datagram Conversion Error',
1022     'Mobile Host Redirect',
1023     'IPv6 Where-Are-You',
1024     'IPv6 I-Am-Here',
1025     'Mobile Registration Request',
1026     'Mobile Registration Reply',
1027     'Domain Name Request',
1028     'Domain Name Reply',
1029     'SKIP',
1030     'Photur',                           #40
1031     'Experimental');
1032     if ($index>41) {return 'unknown'} else {return $icmp_description[$index]};
1033 }
1034
1035 sub GetCoreUpdateVersion() {
1036         my $core_update;
1037
1038         open(FILE, "/opt/pakfire/db/core/mine");
1039         while (<FILE>) {
1040                 $core_update = $_;
1041                 last;
1042         }
1043         close(FILE);
1044
1045         return $core_update;
1046 }
1047
1048 sub MakeUserAgent() {
1049         my $user_agent = "IPFire/$General::version";
1050
1051         my $core_update = &GetCoreUpdateVersion();
1052         if ($core_update ne "") {
1053                 $user_agent .= "/$core_update";
1054         }
1055
1056         return $user_agent;
1057 }
1058
1059 sub RedIsWireless() {
1060         # This function checks if a network device is a wireless device.
1061
1062         my %settings = ();
1063         &readhash("${General::swroot}/ethernet/settings", \%settings);
1064
1065         # Find the name of the network device.
1066         my $device = $settings{'RED_DEV'};
1067
1068         # Exit, if no device is configured.
1069         return 0 if ($device eq "");
1070
1071         # Return 1 if the device is a wireless one.
1072         my $path = "/sys/class/net/$device/wireless";
1073         if (-d $path) {
1074                 return 1;
1075         }
1076
1077         # Otherwise return zero.
1078         return 0;
1079 }
1080
1081 # Function to read a file with UTF-8 charset.
1082 sub read_file_utf8 ($) {
1083         my ($file) = @_;
1084
1085         open my $in, '<:encoding(UTF-8)', $file or die "Could not open '$file' for reading $!";
1086         local $/ = undef;
1087         my $all = <$in>;
1088         close $in;
1089
1090         return $all;
1091 }
1092
1093 # Function to write a file with UTF-8 charset.
1094 sub write_file_utf8 ($) {
1095         my ($file, $content) = @_;
1096
1097         open my $out, '>:encoding(UTF-8)', $file or die "Could not open '$file' for writing $!";;
1098         print $out $content;
1099         close $out;
1100
1101         return;
1102 }
1103
1104 my $FIREWALL_RELOAD_INDICATOR = "${General::swroot}/firewall/reread";
1105
1106 sub firewall_config_changed() {
1107         open FILE, ">$FIREWALL_RELOAD_INDICATOR" or die "Could not open $FIREWALL_RELOAD_INDICATOR";
1108         close FILE;
1109 }
1110
1111 sub firewall_needs_reload() {
1112         if (-e "$FIREWALL_RELOAD_INDICATOR") {
1113                 return 1;
1114         }
1115
1116         return 0;
1117 }
1118
1119 sub firewall_reload() {
1120         system("/usr/local/bin/firewallctrl");
1121 }
1122
1123 # Function which will return the used interface for the red network zone (red0, ppp0, etc).
1124 sub get_red_interface() {
1125
1126         open(IFACE, "${General::swroot}/red/iface") or die "Could not open /var/ipfire/red/iface";
1127
1128         my $interface = <IFACE>;
1129         close(IFACE);
1130         chomp $interface;
1131
1132         return $interface;
1133 }
1134
1135 1;