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 Net::SSLeay;
  21 use Net::IPv4Addr qw(:all);
  22 $|=1; # line buffering
  23
  24 $General::version = 'VERSION';
  25 $General::swroot = 'CONFIG_ROOT';
  26 $General::noipprefix = 'noipg-';
  27 $General::adminmanualurl = 'http://wiki.ipfire.org';
  28
  29 #
  30 # log ("message") use default 'ipcop' tag
  31 # log ("tag","message") use your tag
  32 #
  33 sub log
  34 {
  35         my $tag='ipfire';
  36         $tag = shift if (@_>1);
  37         my $logmessage = $_[0];
  38         $logmessage =~ /([\w\W]*)/;
  39         $logmessage = $1;
  40         system('logger', '-t', $tag, $logmessage);
  41 }
  42 sub setup_default_networks
  43 {
  44         my %netsettings=();
  45         my $defaultNetworks = shift;
  46
  47         &readhash("/var/ipfire/ethernet/settings", \%netsettings);
  48
  49         # Get current defined networks (Red, Green, Blue, Orange)
  50         $defaultNetworks->{$Lang::tr{'fwhost any'}}{'IPT'} = "0.0.0.0/0.0.0.0";
  51         $defaultNetworks->{$Lang::tr{'fwhost any'}}{'NAME'} = "ALL";
  52
  53         $defaultNetworks->{$Lang::tr{'green'}}{'IPT'} = "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}";
  54         $defaultNetworks->{$Lang::tr{'green'}}{'NET'} = "$netsettings{'GREEN_ADDRESS'}";
  55         $defaultNetworks->{$Lang::tr{'green'}}{'NAME'} = "GREEN";
  56
  57         if ($netsettings{'RED_DEV'} ne ''){
  58                 $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'IPT'} = "$netsettings{'RED_NETADDRESS'}/$netsettings{'RED_NETMASK'}";
  59                 $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'NET'} = "$netsettings{'RED_ADDRESS'}";
  60                 $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'NAME'} = "RED";
  61         }
  62         if ($netsettings{'ORANGE_DEV'} ne ''){
  63                 $defaultNetworks->{$Lang::tr{'orange'}}{'IPT'} = "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}";
  64                 $defaultNetworks->{$Lang::tr{'orange'}}{'NET'} = "$netsettings{'ORANGE_ADDRESS'}";
  65                 $defaultNetworks->{$Lang::tr{'orange'}}{'NAME'} = "ORANGE";
  66         }
  67
  68         if ($netsettings{'BLUE_DEV'} ne ''){
  69                 $defaultNetworks->{$Lang::tr{'blue'}}{'IPT'} = "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}";
  70                 $defaultNetworks->{$Lang::tr{'blue'}}{'NET'} = "$netsettings{'BLUE_ADDRESS'}";
  71                 $defaultNetworks->{$Lang::tr{'blue'}}{'NAME'} = "BLUE";
  72         }
  73
  74         #IPFire himself
  75         $defaultNetworks->{'IPFire'}{'NAME'} = "IPFire";
  76
  77         # OpenVPN
  78         if(-e "${General::swroot}/ovpn/settings")
  79         {
  80                 my %ovpnSettings = ();
  81                 &readhash("${General::swroot}/ovpn/settings", \%ovpnSettings);
  82
  83                 # OpenVPN on Red?
  84                 if(defined($ovpnSettings{'DOVPN_SUBNET'}))
  85                 {
  86                         my ($ip,$sub) = split(/\//,$ovpnSettings{'DOVPN_SUBNET'});
  87                         $sub=&General::iporsubtocidr($sub);
  88                         my @tempovpnsubnet = split("\/", $ovpnSettings{'DOVPN_SUBNET'});
  89                         $defaultNetworks->{'OpenVPN ' ."($ip/$sub)"}{'ADR'} = $tempovpnsubnet[0];
  90                         $defaultNetworks->{'OpenVPN ' ."($ip/$sub)"}{'NAME'} = "OpenVPN-Dyn";
  91                 }
  92         } # end OpenVPN
  93         # IPsec RW NET
  94         if(-e "${General::swroot}/vpn/settings")
  95         {
  96                 my %ipsecsettings = ();
  97                 &readhash("${General::swroot}/vpn/settings", \%ipsecsettings);
  98                 if($ipsecsettings{'RW_NET'} ne '')
  99                 {
 100                         my ($ip,$sub) = split(/\//,$ipsecsettings{'RW_NET'});
 101                         $sub=&General::iporsubtocidr($sub);
 102                         my @tempipsecsubnet = split("\/", $ipsecsettings{'RW_NET'});
 103                         $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'ADR'} = $tempipsecsubnet[0];
 104                         $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'NAME'} = "IPsec RW";
 105                         $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'NET'} = &getnextip($ip);
 106                 }
 107         }
 108 }
 109 sub get_aliases
 110 {
 111
 112         my $defaultNetworks = shift;
 113         open(FILE, "${General::swroot}/ethernet/aliases") or die 'Unable to open aliases file.';
 114         my @current = <FILE>;
 115         close(FILE);
 116         my $ctr = 0;
 117         foreach my $line (@current)
 118         {
 119                 if ($line ne ''){
 120                         chomp($line);
 121                         my @temp = split(/\,/,$line);
 122                         if ($temp[2] eq '') {
 123                                 $temp[2] = "Alias $ctr : $temp[0]";
 124                         }
 125                         $defaultNetworks->{$temp[2]}{'IPT'} = "$temp[0]";
 126                         $defaultNetworks->{$temp[2]}{'NET'} = "$temp[0]";
 127
 128                         $ctr++;
 129                 }
 130         }
 131 }
 132
 133 sub readhash
 134 {
 135         my $filename = $_[0];
 136         my $hash = $_[1];
 137         my ($var, $val);
 138
 139
 140         # Some ipcop code expects that readhash 'complete' the hash if new entries
 141         # are presents. Not clear it !!!
 142         #%$hash = ();
 143
 144         open(FILE, $filename) or die "Unable to read file $filename";
 145
 146         while (<FILE>)
 147         {
 148                 chop;
 149                 ($var, $val) = split /=/, $_, 2;
 150                 if ($var)
 151                 {
 152                         $val =~ s/^\'//g;
 153                         $val =~ s/\'$//g;
 154
 155                         # Untaint variables read from hash
 156                         # trim space from begin and end
 157                         $var =~ s/^\s+//;
 158                         $var =~ s/\s+$//;
 159                         $var =~ /([A-Za-z0-9_-]*)/;
 160                         $var = $1;
 161                         $val =~ /([\w\W]*)/;
 162                         $val = $1;
 163                         $hash->{$var} = $val;
 164                 }
 165         }
 166         close FILE;
 167 }
 168
 169
 170 sub writehash
 171 {
 172         my $filename = $_[0];
 173         my $hash = $_[1];
 174         my ($var, $val);
 175
 176         # write cgi vars to the file.
 177         open(FILE, ">${filename}") or die "Unable to write file $filename";
 178         flock FILE, 2;
 179         foreach $var (keys %$hash)
 180         {
 181                 if ( $var eq "__CGI__"){next;}
 182                 $val = $hash->{$var};
 183                 # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y
 184                 # location of the mouse are submitted as well, this was being written to the settings file causing
 185                 # some serious grief! This skips the variable.x and variable.y
 186                 if (!($var =~ /(.x|.y)$/)) {
 187                         if ($val =~ / /) {
 188                                 $val = "\'$val\'"; }
 189                         if (!($var =~ /^ACTION/)) {
 190                                 print FILE "${var}=${val}\n"; }
 191                 }
 192         }
 193         close FILE;
 194 }
 195
 196 sub writehashpart
 197 {
 198         # This function replaces the given hash in the original hash by keeping the old
 199         # content and just replacing the new content
 200
 201         my $filename = $_[0];
 202         my $newhash = $_[1];
 203         my %oldhash;
 204         my ($var, $val);
 205
 206         readhash("${filename}", \%oldhash);
 207
 208         foreach $var (keys %$newhash){
 209                 $oldhash{$var}=$newhash->{$var};
 210         }
 211
 212         # write cgi vars to the file.
 213         open(FILE, ">${filename}") or die "Unable to write file $filename";
 214         flock FILE, 2;
 215         foreach $var (keys %oldhash)
 216         {
 217                 if ( $var eq "__CGI__"){next;}
 218                 $val = $oldhash{$var};
 219                 # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y
 220                 # location of the mouse are submitted as well, this was being written to the settings file causing
 221                 # some serious grief! This skips the variable.x and variable.y
 222                 if (!($var =~ /(.x|.y)$/)) {
 223                         if ($val =~ / /) {
 224                                 $val = "\'$val\'"; }
 225                         if (!($var =~ /^ACTION/)) {
 226                                 print FILE "${var}=${val}\n"; }
 227                 }
 228         }
 229         close FILE;
 230 }
 231
 232 sub age {
 233         my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size,
 234                 $atime, $mtime, $ctime, $blksize, $blocks) = stat $_[0];
 235         my $totalsecs = time() - $mtime;
 236         my @s = ();
 237
 238         my $secs = $totalsecs % 60;
 239         $totalsecs /= 60;
 240         if ($secs > 0) {
 241                 push(@s, "${secs}s");
 242         }
 243
 244         my $min = $totalsecs % 60;
 245         $totalsecs /= 60;
 246         if ($min > 0) {
 247                 push(@s, "${min}m");
 248         }
 249
 250         my $hrs = $totalsecs % 24;
 251         $totalsecs /= 24;
 252         if ($hrs > 0) {
 253                 push(@s, "${hrs}h");
 254         }
 255
 256         my $days = int($totalsecs);
 257         if ($days > 0) {
 258                 push(@s, "${days}d");
 259         }
 260
 261         return join(" ", reverse(@s));
 262 }
 263
 264 sub validip
 265 {
 266         my $ip = $_[0];
 267
 268         if (!($ip =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)) {
 269                 return 0; }
 270         else
 271         {
 272                 my @octets = ($1, $2, $3, $4);
 273                 foreach $_ (@octets)
 274                 {
 275                         if (/^0./) {
 276                                 return 0; }
 277                         if ($_ < 0 || $_ > 255) {
 278                                 return 0; }
 279                 }
 280                 return 1;
 281         }
 282 }
 283
 284 sub validmask
 285 {
 286         my $mask = $_[0];
 287
 288         # secord part an ip?
 289         if (&validip($mask)) {
 290                 return 1; }
 291         # second part a number?
 292         if (/^0/) {
 293                 return 0; }
 294         if (!($mask =~ /^\d+$/)) {
 295                 return 0; }
 296         if ($mask >= 0 && $mask <= 32) {
 297                 return 1; }
 298         return 0;
 299 }
 300
 301 sub validipormask
 302 {
 303         my $ipormask = $_[0];
 304
 305         # see if it is a IP only.
 306         if (&validip($ipormask)) {
 307                 return 1; }
 308         # split it into number and mask.
 309         if (!($ipormask =~ /^(.*?)\/(.*?)$/)) {
 310                 return 0; }
 311         my $ip = $1;
 312         my $mask = $2;
 313         # first part not a ip?
 314         if (!(&validip($ip))) {
 315                 return 0; }
 316         return &validmask($mask);
 317 }
 318
 319 sub subtocidr
 320 {
 321         #gets: Subnet in decimal (255.255.255.0)
 322         #Gives: 24 (The cidr of network)
 323         my ($byte1, $byte2, $byte3, $byte4) = split(/\./, $_[0].".0.0.0.0");
 324         my $num = ($byte1 * 16777216) + ($byte2 * 65536) + ($byte3 * 256) + $byte4;
 325         my $bin = unpack("B*", pack("N", $num));
 326         my $count = ($bin =~ tr/1/1/);
 327         return $count;
 328 }
 329
 330 sub cidrtosub
 331 {
 332         #gets: Cidr of network (20-30 for ccd)
 333         #Konverts 30 to 255.255.255.252 e.g
 334         my $cidr=$_[0];
 335     my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr);
 336     return "$netmask";
 337 }
 338
 339 sub iporsubtodec
 340 {
 341         #Gets: Ip address or subnetmask in decimal oder CIDR
 342         #Gives: What it gets only in CIDR format
 343         my $subnet=$_[0];
 344         my $net;
 345         my $mask;
 346         my $full=0;
 347         if ($subnet =~ /^(.*?)\/(.*?)$/) {
 348                 ($net,$mask) = split (/\//,$subnet);
 349                 $full=1;
 350                 return "$subnet";
 351         }else{
 352                 $mask=$subnet;
 353         }
 354         #Subnet already in decimal and valid?
 355         if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255  && $2<=$1 && $3<=$2  && $4<=$3 )))       {
 356                 for (my $i=8;$i<=32;$i++){
 357                         if (&General::cidrtosub($i) eq $mask){
 358                                 if ($full == 0){return $mask;}else{
 359                                                          return $net."/".$mask;
 360                                 }
 361                         }
 362                 }
 363         }
 364         #Subnet in binary format?
 365         if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=8))){
 366                         if($full == 0){ return &General::cidrtosub($mask);}else{
 367                                                  return $net."/".&General::cidrtosub($mask);
 368                         }
 369         }else{
 370                         return 3;
 371         }
 372         return 3;
 373 }
 374
 375
 376 sub iporsubtocidr
 377 {
 378         #gets: Ip Address  or subnetmask in decimal oder CIDR
 379         #Gives: What it gets only in CIDR format
 380         my $subnet=$_[0];
 381         my $net;
 382         my $mask;
 383         my $full=0;
 384         if ($subnet =~ /^(.*?)\/(.*?)$/) {
 385                 ($net,$mask) = split (/\//,$subnet);
 386                 $full=1;
 387         }else{
 388                 $mask=$subnet;
 389         }
 390         #Subnet in decimal and valid?
 391         if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255  && $2<=$1 && $3<=$2  && $4<=$3 )))       {
 392                 for (my $i=8;$i<=32;$i++){
 393                         if (&General::cidrtosub($i) eq $mask){
 394                                 if ($full == 0){return &General::subtocidr($mask);}else{
 395                                                          return $net."/".&General::subtocidr($mask);
 396                                 }
 397                         }
 398                 }
 399         }
 400         #Subnet already in binary format?
 401         if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=8))){
 402                         if($full == 0){ return $mask;}else{
 403                                                  return $net."/".$mask;
 404                         }
 405         }else{
 406                         return 3;
 407         }
 408         return 3;
 409 }
 410
 411 sub getnetworkip
 412 {
 413         #Gets:  IP, CIDR    (10.10.10.0-255, 24)
 414         #Gives:  10.10.10.0
 415         my ($ccdip,$ccdsubnet) = @_;
 416         my $ip_address_binary = inet_aton( $ccdip );
 417         my $netmask_binary    = ~pack("N", (2**(32-$ccdsubnet))-1);
 418         my $network_address    = inet_ntoa( $ip_address_binary & $netmask_binary );
 419         return $network_address;
 420 }
 421
 422 sub getccdbc
 423 {
 424         #Gets: IP in Form ("192.168.0.0/24")
 425         #Gives: Broadcastaddress of network
 426         my $ccdnet=$_;
 427         my ($ccdip,$ccdsubnet) = split "/",$ccdnet;
 428         my $ip_address_binary = inet_aton( $ccdip );
 429         my $netmask_binary    = ~pack("N", (2**(32-$ccdsubnet))-1);
 430         my $broadcast_address  = inet_ntoa( $ip_address_binary | ~$netmask_binary );
 431         return $broadcast_address;
 432 }
 433
 434 sub ip2dec
 435 {
 436     my $ip_num;
 437     my $ip=$_[0];
 438     if ( $ip =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/ ) {
 439         $ip_num = (($1*256**3) + ($2*256**2) + ($3*256) + $4);
 440     } else {
 441         $ip_num = -1;
 442     }
 443     $ip_num = (($1*256**3) + ($2*256**2) + ($3*256) + $4);
 444     return($ip_num);
 445 }
 446
 447 sub dec2ip
 448 {
 449     my $ip;
 450     my $ip_num=$_[0];
 451         my $o1=$ip_num%256;
 452         $ip_num=int($ip_num/256);
 453         my $o2=$ip_num%256;
 454         $ip_num=int($ip_num/256);
 455         my $o3=$ip_num%256;
 456         $ip_num=int($ip_num/256);
 457         my $o4=$ip_num%256;
 458         $ip="$o4.$o3.$o2.$o1";
 459     return ($ip);
 460 }
 461
 462 sub getnextip
 463 {
 464         my $decip=&ip2dec($_[0]);
 465         $decip=$decip+4;
 466         return &dec2ip($decip);
 467 }
 468
 469 sub getlastip
 470 {
 471         my $decip=&ip2dec($_[0]);
 472         $decip--;
 473         return &dec2ip($decip);
 474 }
 475
 476 sub validipandmask
 477 {
 478         #Gets: Ip address in 192.168.0.0/24 or 192.168.0.0/255.255.255.0 and checks if subnet valid
 479         #Gives: True bzw 0 if success or false
 480         my $ccdnet=$_[0];
 481         my $subcidr;
 482
 483         if (!($ccdnet =~ /^(.*?)\/(.*?)$/)) {
 484                 return 0;
 485         }
 486         my ($ccdip,$ccdsubnet)=split (/\//, $ccdnet);
 487         #IP valid?
 488         if ($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 && $4<=255 ))) {
 489                 #Subnet in decimal and valid?
 490                 if ($ccdsubnet=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255  && $2<=$1 && $3<=$2  && $4<=$3 )))  {
 491                         for (my $i=8;$i<=32;$i++){
 492                                 if (&General::cidrtosub($i) eq $ccdsubnet){
 493                                         return 1;
 494                                 }
 495                         }
 496                 #Subnet already in binary format?
 497                 }elsif ($ccdsubnet=~/^(\d{1,2})$/ && (($1<=32 && $1>=8))){
 498                         return 1;
 499                 }else{
 500                         return 0;
 501                 }
 502
 503         }
 504         return 0;
 505 }
 506
 507 sub checksubnets
 508 {
 509         my %ccdconfhash=();
 510         my %ovpnconfhash=();
 511         my %vpnconf=();
 512         my %ipsecconf=();
 513         my %ownnet=();
 514         my %ovpnconf=();
 515         my @ccdconf=();
 516         my $ccdname=$_[0];
 517         my $ccdnet=$_[1];
 518         my $ownnet=$_[2];
 519         my $errormessage;
 520         my ($ip,$cidr)=split(/\//,$ccdnet);
 521         $cidr=&iporsubtocidr($cidr);
 522
 523         #get OVPN-Subnet (dynamic range)
 524         &readhash("${General::swroot}/ovpn/settings", \%ovpnconf);
 525         my ($ovpnip,$ovpncidr)= split (/\//,$ovpnconf{'DOVPN_SUBNET'});
 526         $ovpncidr=&iporsubtocidr($ovpncidr);
 527
 528         #check if we try to use same network as ovpn server
 529         if ("$ip/$cidr" eq "$ovpnip/$ovpncidr") {
 530                         $errormessage=$errormessage.$Lang::tr{'ccd err isovpnnet'}."<br>";
 531                         return $errormessage;
 532         }
 533
 534         #check if we try to use same network as another ovpn N2N
 535         if($ownnet ne 'ovpn'){
 536                 &readhasharray("${General::swroot}/ovpn/ovpnconfig", \%ovpnconfhash);
 537                 foreach my $key (keys %ovpnconfhash) {
 538                         if ($ovpnconfhash{$key}[3] eq 'net'){
 539                                 my @ovpnnet=split (/\//,$ovpnconfhash{$key}[11]);
 540                                 if (&IpInSubnet($ip,$ovpnnet[0],&iporsubtodec($ovpnnet[1]))){
 541                                         $errormessage=$errormessage.$Lang::tr{'ccd err isovpnn2n'}." $ovpnconfhash{$key}[1] <br>";
 542                                         return $errormessage;
 543                                 }
 544                         }
 545                 }
 546         }
 547
 548         #check if we use a network-name/subnet (static-ovpn) that already exists
 549         &readhasharray("${General::swroot}/ovpn/ccd.conf", \%ccdconfhash);
 550         foreach my $key (keys %ccdconfhash) {
 551                 @ccdconf=split(/\//,$ccdconfhash{$key}[1]);
 552                 if ($ccdname eq $ccdconfhash{$key}[0])
 553                 {
 554                         $errormessage=$errormessage.$Lang::tr{'ccd err nameexist'}."<br>";
 555                         return $errormessage;
 556                 }
 557                 my ($newip,$newsub) = split(/\//,$ccdnet);
 558                 if (&IpInSubnet($newip,$ccdconf[0],&iporsubtodec($ccdconf[1])))
 559                 {
 560                         $errormessage=$errormessage.$Lang::tr{'ccd err issubnet'}." $ccdconfhash{$key}[0]<br>";
 561                         return $errormessage;
 562                 }
 563         }
 564
 565         #check if we use a ipsec right network which is already defined
 566         if($ownnet ne 'ipsec'){
 567                 &General::readhasharray("${General::swroot}/vpn/config", \%ipsecconf);
 568                 foreach my $key (keys %ipsecconf){
 569                         if ($ipsecconf{$key}[11] ne ''){
 570                                 my ($ipsecip,$ipsecsub) = split (/\//, $ipsecconf{$key}[11]);
 571                                 $ipsecsub=&iporsubtodec($ipsecsub);
 572                                 if($ipsecconf{$key}[1] ne $ccdname){
 573                                         if ( &IpInSubnet ($ip,$ipsecip,$ipsecsub) ){
 574                                                 $errormessage=$Lang::tr{'ccd err isipsecnet'}." Name:  $ipsecconf{$key}[1]";
 575                                                 return $errormessage;
 576                                         }
 577                                 }
 578                         }
 579                 }
 580         }
 581
 582         #check if we use the ipsec RW Network (if defined)
 583         &readhash("${General::swroot}/vpn/settings", \%vpnconf);
 584         if ($vpnconf{'RW_NET'} ne ''){
 585                 my ($ipsecrwnet,$ipsecrwsub)=split (/\//, $vpnconf{'RW_NET'});
 586                 if (&IpInSubnet($ip,$ipsecrwnet,&iporsubtodec($ipsecrwsub)))
 587                 {
 588                         $errormessage=$errormessage.$Lang::tr{'ccd err isipsecrw'}."<br>";
 589                         return $errormessage;
 590                 }
 591         }
 592
 593         #check if we use one of ipfire's networks (green,orange,blue)
 594         &readhash("${General::swroot}/ethernet/settings", \%ownnet);
 595         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 $errormessage;}
 596         if (($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 $errormessage;}
 597         if (($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 $errormessage;}
 598         if (($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;}
 599 }
 600
 601
 602 sub validport
 603 {
 604         $_ = $_[0];
 605
 606         if (!/^\d+$/) {
 607                 return 0; }
 608         if (/^0./) {
 609                 return 0; }
 610         if ($_ >= 1 && $_ <= 65535) {
 611                 return 1; }
 612         return 0;
 613 }
 614
 615 sub validproxyport
 616 {
 617         $_ = $_[0];
 618
 619         if (!/^\d+$/) {
 620                 return 0; }
 621         if (/^0./) {
 622                 return 0; }
 623         if ($_ == 53 || $_ == 222 || $_ == 444 || $_ == 81 ) {
 624                 return 0; }
 625         elsif ($_ >= 1 && $_ <= 65535) {
 626                 return 1; }
 627         return 0;
 628 }
 629
 630 sub validmac
 631 {
 632         my $checkmac = $_[0];
 633         my $ot = '[0-9a-f]{2}'; # 2 Hex digits (one octet)
 634         if ($checkmac !~ /^$ot:$ot:$ot:$ot:$ot:$ot$/i)
 635         {
 636                 return 0;
 637         }
 638         return 1;
 639 }
 640
 641 sub validhostname
 642 {
 643         # Checks a hostname against RFC1035
 644         my $hostname = $_[0];
 645
 646         # Each part should be at least two characters in length
 647         # but no more than 63 characters
 648         if (length ($hostname) < 1 || length ($hostname) > 63) {
 649                 return 0;}
 650         # Only valid characters are a-z, A-Z, 0-9 and -
 651         if ($hostname !~ /^[a-zA-Z0-9-\s]*$/) {
 652                 return 0;}
 653         # First character can only be a letter or a digit
 654         if (substr ($hostname, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
 655                 return 0;}
 656         # Last character can only be a letter or a digit
 657         if (substr ($hostname, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
 658                 return 0;}
 659         return 1;
 660 }
 661
 662 sub validdomainname
 663 {
 664         my $part;
 665
 666         # Checks a domain name against RFC1035
 667         my $domainname = $_[0];
 668         my @parts = split (/\./, $domainname);  # Split hostname at the '.'
 669
 670         foreach $part (@parts) {
 671                 # Each part should be at least two characters in length
 672                 # but no more than 63 characters
 673                 if (length ($part) < 2 || length ($part) > 63) {
 674                         return 0;}
 675                 # Only valid characters are a-z, A-Z, 0-9 and -
 676                 if ($part !~ /^[a-zA-Z0-9-]*$/) {
 677                         return 0;}
 678                 # First character can only be a letter or a digit
 679                 if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
 680                         return 0;}
 681                 # Last character can only be a letter or a digit
 682                 if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
 683                         return 0;}
 684         }
 685         return 1;
 686 }
 687
 688 sub validfqdn
 689 {
 690         my $part;
 691
 692         # Checks a fully qualified domain name against RFC1035
 693         my $fqdn = $_[0];
 694         my @parts = split (/\./, $fqdn);        # Split hostname at the '.'
 695         if (scalar(@parts) < 2) {               # At least two parts should
 696                 return 0;}                      # exist in a FQDN
 697                                                 # (i.e. hostname.domain)
 698         foreach $part (@parts) {
 699                 # Each part should be at least one character in length
 700                 # but no more than 63 characters
 701                 if (length ($part) < 1 || length ($part) > 63) {
 702                         return 0;}
 703                 # Only valid characters are a-z, A-Z, 0-9 and -
 704                 if ($part !~ /^[a-zA-Z0-9-]*$/) {
 705                         return 0;}
 706                 # First character can only be a letter or a digit
 707                 if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) {
 708                         return 0;}
 709                 # Last character can only be a letter or a digit
 710                 if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) {
 711                         return 0;}
 712         }
 713         return 1;
 714 }
 715
 716 sub validportrange # used to check a port range
 717 {
 718         my $port = $_[0]; # port values
 719         $port =~ tr/-/:/; # replace all - with colons just in case someone used -
 720         my $srcdst = $_[1]; # is it a source or destination port
 721
 722         if (!($port =~ /^(\d+)\:(\d+)$/)) {
 723
 724                 if (!(&validport($port))) {
 725                         if ($srcdst eq 'src'){
 726                                 return $Lang::tr{'source port numbers'};
 727                         } else  {
 728                                 return $Lang::tr{'destination port numbers'};
 729                         }
 730                 }
 731         }
 732         else
 733         {
 734                 my @ports = ($1, $2);
 735                 if ($1 >= $2){
 736                         if ($srcdst eq 'src'){
 737                                 return $Lang::tr{'bad source range'};
 738                         } else  {
 739                                 return $Lang::tr{'bad destination range'};
 740                         }
 741                 }
 742                 foreach $_ (@ports)
 743                 {
 744                         if (!(&validport($_))) {
 745                                 if ($srcdst eq 'src'){
 746                                         return $Lang::tr{'source port numbers'};
 747                                 } else  {
 748                                         return $Lang::tr{'destination port numbers'};
 749                                 }
 750                         }
 751                 }
 752                 return;
 753         }
 754 }
 755
 756 # Test if IP is within a subnet
 757 # Call: IpInSubnet (Addr, Subnet, Subnet Mask)
 758 #       Subnet can be an IP of the subnet: 10.0.0.0 or 10.0.0.1
 759 #       Everything in dottted notation
 760 # Return: TRUE/FALSE
 761 sub IpInSubnet
 762 {
 763     my $ip = unpack('N', &Socket::inet_aton(shift));
 764     my $start = unpack('N', &Socket::inet_aton(shift));
 765     my $mask  = unpack('N', &Socket::inet_aton(shift));
 766        $start &= $mask;  # base of subnet...
 767     my $end   = $start + ~$mask;
 768     return (($ip >= $start) && ($ip <= $end));
 769 }
 770
 771 #
 772 # Return the following IP (IP+1) in dotted notation.
 773 # Call: NextIP ('1.1.1.1');
 774 # Return: '1.1.1.2'
 775 #
 776 sub NextIP
 777 {
 778     return &Socket::inet_ntoa( pack("N", 1 +  unpack('N', &Socket::inet_aton(shift))
 779                                    )
 780                              );
 781 }
 782 sub NextIP2
 783 {
 784     return &Socket::inet_ntoa( pack("N", 4 +  unpack('N', &Socket::inet_aton(shift))
 785                                    )
 786                              );
 787 }
 788 sub ipcidr
 789 {
 790         my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift);
 791         return "$ip\/$cidr";
 792 }
 793
 794 sub ipcidr2msk
 795 {
 796        my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift);
 797        my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr);
 798        return "$ip\/$netmask";
 799 }
 800
 801
 802 sub validemail {
 803     my $mail = shift;
 804     return 0 if ( $mail !~ /^[0-9a-zA-Z\.\-\_]+\@[0-9a-zA-Z\.\-]+$/ );
 805     return 0 if ( $mail =~ /^[^0-9a-zA-Z]|[^0-9a-zA-Z]$/);
 806     return 0 if ( $mail !~ /([0-9a-zA-Z]{1})\@./ );
 807     return 0 if ( $mail !~ /.\@([0-9a-zA-Z]{1})/ );
 808     return 0 if ( $mail =~ /.\.\-.|.\-\..|.\.\..|.\-\-./g );
 809     return 0 if ( $mail =~ /.\.\_.|.\-\_.|.\_\..|.\_\-.|.\_\_./g );
 810     return 0 if ( $mail !~ /\.([a-zA-Z]{2,4})$/ );
 811     return 1;
 812 }
 813
 814 #
 815 # Currently only vpnmain use this three procs (readhasharray, writehasharray, findhasharray)
 816 # The 'key' used is numeric but is perfectly unneeded! This will to be removed so don't use
 817 # this code. Vpnmain will be splitted in parts: x509/pki, connection ipsec, connection other,... .
 818 #
 819 sub readhasharray {
 820     my ($filename, $hash) = @_;
 821     %$hash = ();
 822
 823     open(FILE, $filename) or die "Unable to read file $filename";
 824
 825     while (<FILE>) {
 826         my ($key, $rest, @temp);
 827         chomp;
 828         ($key, $rest) = split (/,/, $_, 2);
 829         if ($key =~ /^[0-9]+$/) {
 830             @temp = split (/,/, $rest);
 831             $hash->{$key} = \@temp;
 832         }
 833     }
 834     close FILE;
 835     return;
 836 }
 837
 838 sub writehasharray {
 839     my ($filename, $hash) = @_;
 840     my ($key, @temp, $i);
 841
 842     open(FILE, ">$filename") or die "Unable to write to file $filename";
 843
 844     foreach $key (keys %$hash) {
 845                 if ($key =~ /^[0-9]+$/) {
 846                         print FILE "$key";
 847                         foreach $i (0 .. $#{$hash->{$key}}) {
 848                                 print FILE ",$hash->{$key}[$i]";
 849                         }
 850                         print FILE "\n";
 851                 }
 852     }
 853     close FILE;
 854     return;
 855 }
 856
 857 sub findhasharraykey {
 858     foreach my $i (1 .. 1000000) {
 859         if ( ! exists $_[0]{$i}) {
 860              return $i;
 861         }
 862     }
 863 }
 864
 865 sub srtarray
 866 # Darren Critchley - darrenc@telus.net - (c) 2003
 867 # &srtarray(SortOrder, AlphaNumeric, SortDirection, ArrayToBeSorted)
 868 # This subroutine will take the following parameters:
 869 #   ColumnNumber = the column which you want to sort on, starts at 1
 870 #   AlphaNumberic = a or n (lowercase) defines whether the sort should be alpha or numberic
 871 #   SortDirection = asc or dsc (lowercase) Ascending or Descending sort
 872 #   ArrayToBeSorted = the array that wants sorting
 873 #
 874 #   Returns an array that is sorted to your specs
 875 #
 876 #   If SortOrder is greater than the elements in array, then it defaults to the first element
 877 #
 878 {
 879         my ($colno, $alpnum, $srtdir, @tobesorted) = @_;
 880         my @tmparray;
 881         my @srtedarray;
 882         my $line;
 883         my $newline;
 884         my $ctr;
 885         my $ttlitems = scalar @tobesorted; # want to know the number of rows in the passed array
 886         if ($ttlitems < 1){ # if no items, don't waste our time lets leave
 887                 return (@tobesorted);
 888         }
 889         my @tmp = split(/\,/,$tobesorted[0]);
 890         $ttlitems = scalar @tmp; # this should be the number of elements in each row of the passed in array
 891
 892         # Darren Critchley - validate parameters
 893         if ($colno > $ttlitems){$colno = '1';}
 894         $colno--; # remove one from colno to deal with arrays starting at 0
 895         if($colno < 0){$colno = '0';}
 896         if ($alpnum ne '') { $alpnum = lc($alpnum); } else { $alpnum = 'a'; }
 897         if ($srtdir ne '') { $srtdir = lc($srtdir); } else { $srtdir = 'src'; }
 898
 899         foreach $line (@tobesorted)
 900         {
 901                 chomp($line);
 902                 if ($line ne '') {
 903                         my @temp = split(/\,/,$line);
 904                         # Darren Critchley - juggle the fields so that the one we want to sort on is first
 905                         my $tmpholder = $temp[0];
 906                         $temp[0] = $temp[$colno];
 907                         $temp[$colno] = $tmpholder;
 908                         $newline = "";
 909                         for ($ctr=0; $ctr < $ttlitems ; $ctr++) {
 910                                 $newline=$newline . $temp[$ctr] . ",";
 911                         }
 912                         chop($newline);
 913                         push(@tmparray,$newline);
 914                 }
 915         }
 916         if ($alpnum eq 'n') {
 917                 @tmparray = sort {$a <=> $b} @tmparray;
 918         } else {
 919                 @tmparray = (sort @tmparray);
 920         }
 921         foreach $line (@tmparray)
 922         {
 923                 chomp($line);
 924                 if ($line ne '') {
 925                         my @temp = split(/\,/,$line);
 926                         my $tmpholder = $temp[0];
 927                         $temp[0] = $temp[$colno];
 928                         $temp[$colno] = $tmpholder;
 929                         $newline = "";
 930                         for ($ctr=0; $ctr < $ttlitems ; $ctr++){
 931                                 $newline=$newline . $temp[$ctr] . ",";
 932                         }
 933                         chop($newline);
 934                         push(@srtedarray,$newline);
 935                 }
 936         }
 937
 938         if ($srtdir eq 'dsc') {
 939                 @tmparray = reverse(@srtedarray);
 940                 return (@tmparray);
 941         } else {
 942                 return (@srtedarray);
 943         }
 944 }
 945
 946 sub FetchPublicIp {
 947     my %proxysettings;
 948     &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 949     if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 950         my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 951         Net::SSLeay::set_proxy($peer,$peerport,$proxysettings{'UPSTREAM_USER'},$proxysettings{'UPSTREAM_PASSWORD'} );
 952     }
 953     my $user_agent = &MakeUserAgent();
 954     my ($out, $response) = Net::SSLeay::get_http(  'checkip4.dns.lightningwirelabs.com',
 955                                                     80,
 956                                                     "/",
 957                                                     Net::SSLeay::make_headers('User-Agent' => $user_agent )
 958                                                 );
 959     if ($response =~ m%HTTP/1\.. 200 OK%) {
 960         $out =~ /Your IP address is: (\d+.\d+.\d+.\d+)/;
 961         return $1;
 962     }
 963     return '';
 964 }
 965
 966 #
 967 # Check if hostname.domain provided have IP provided
 968 # use gethostbyname to verify that
 969 # Params:
 970 #       IP
 971 #       hostname
 972 #       domain
 973 # Output
 974 #       1 IP matches host.domain
 975 #       0 not in sync
 976 #
 977 sub DyndnsServiceSync ($;$;$) {
 978
 979     my ($ip,$hostName,$domain) = @_;
 980     my @addresses;
 981
 982     #fix me no ip GROUP, what is the name ?
 983     $hostName =~ s/$General::noipprefix//;
 984     if ($hostName) { #may be empty
 985         $hostName = "$hostName.$domain";
 986         @addresses = gethostbyname($hostName);
 987     }
 988
 989     if ($addresses[0] eq '') {                  # nothing returned ?
 990         $hostName = $domain;                    # try resolving with domain only
 991         @addresses = gethostbyname($hostName);
 992     }
 993
 994     if ($addresses[0] ne '') {                  # got something ?
 995         #&General::log("name:$addresses[0], alias:$addresses[1]");
 996         # Build clear text list of IP
 997         @addresses = map ( &Socket::inet_ntoa($_), @addresses[4..$#addresses]);
 998         if (grep (/$ip/, @addresses)) {
 999             return 1;
1000         }
1001     }
1002     return 0;
1003 }
1004 #
1005 # This sub returns the red IP used to compare in DyndnsServiceSync
1006 #
1007 sub GetDyndnsRedIP {
1008     my %settings;
1009     &General::readhash("${General::swroot}/ddns/settings", \%settings);
1010
1011     open(IP, "${General::swroot}/red/local-ipaddress") or return 'unavailable';
1012     my $ip = <IP>;
1013     close(IP);
1014     chomp $ip;
1015
1016     # 100.64.0.0/10 is reserved for dual-stack lite (http://tools.ietf.org/html/rfc6598).
1017     if (&General::IpInSubnet ($ip,'10.0.0.0','255.0.0.0') ||
1018         &General::IpInSubnet ($ip,'172.16.0.0.','255.240.0.0') ||
1019         &General::IpInSubnet ($ip,'192.168.0.0','255.255.0.0') ||
1020         &General::IpInSubnet ($ip,'100.64.0.0', '255.192.0.0'))
1021     {
1022         if ($settings{'BEHINDROUTER'} eq 'FETCH_IP') {
1023             my $RealIP = &General::FetchPublicIp;
1024             $ip = (&General::validip ($RealIP) ?  $RealIP : 'unavailable');
1025         }
1026     }
1027     return $ip;
1028 }
1029
1030 # Translate ICMP code to text
1031 # ref: http://www.iana.org/assignments/icmp-parameters
1032 sub GetIcmpDescription ($) {
1033     my $index = shift;
1034     my @icmp_description = (
1035     'Echo Reply',                       #0
1036     'Unassigned',
1037     'Unassigned',
1038     'Destination Unreachable',
1039     'Source Quench',
1040     'Redirect',
1041     'Alternate Host Address',
1042     'Unassigned',
1043     'Echo',
1044     'Router Advertisement',
1045     'Router Solicitation',              #10
1046     'Time Exceeded',
1047     'Parameter Problem',
1048     'Timestamp',
1049     'Timestamp Reply',
1050     'Information Request',
1051     'Information Reply',
1052     'Address Mask Request',
1053     'Address Mask Reply',
1054     'Reserved (for Security)',
1055     'Reserved (for Robustness Experiment)', #20
1056     'Reserved',
1057     'Reserved',
1058     'Reserved',
1059     'Reserved',
1060     'Reserved',
1061     'Reserved',
1062     'Reserved',
1063     'Reserved',
1064     'Reserved',
1065     'Traceroute',                               #30
1066     'Datagram Conversion Error',
1067     'Mobile Host Redirect',
1068     'IPv6 Where-Are-You',
1069     'IPv6 I-Am-Here',
1070     'Mobile Registration Request',
1071     'Mobile Registration Reply',
1072     'Domain Name Request',
1073     'Domain Name Reply',
1074     'SKIP',
1075     'Photur',                           #40
1076     'Experimental');
1077     if ($index>41) {return 'unknown'} else {return $icmp_description[$index]};
1078 }
1079
1080 sub GetCoreUpdateVersion() {
1081         my $core_update;
1082
1083         open(FILE, "/opt/pakfire/db/core/mine");
1084         while (<FILE>) {
1085                 $core_update = $_;
1086                 last;
1087         }
1088         close(FILE);
1089
1090         return $core_update;
1091 }
1092
1093 sub MakeUserAgent() {
1094         my $user_agent = "IPFire/$General::version";
1095
1096         my $core_update = &GetCoreUpdateVersion();
1097         if ($core_update ne "") {
1098                 $user_agent .= "/$core_update";
1099         }
1100
1101         return $user_agent;
1102 }
1103
1104 sub RedIsWireless() {
1105         # This function checks if a network device is a wireless device.
1106
1107         my %settings = ();
1108         &readhash("${General::swroot}/ethernet/settings", \%settings);
1109
1110         # Find the name of the network device.
1111         my $device = $settings{'RED_DEV'};
1112
1113         # Exit, if no device is configured.
1114         return 0 if ($device eq "");
1115
1116         # Return 1 if the device is a wireless one.
1117         my $path = "/sys/class/net/$device/wireless";
1118         if (-d $path) {
1119                 return 1;
1120         }
1121
1122         # Otherwise return zero.
1123         return 0;
1124 }
1125
1126 # Function to read a file with UTF-8 charset.
1127 sub read_file_utf8 ($) {
1128         my ($file) = @_;
1129
1130         open my $in, '<:encoding(UTF-8)', $file or die "Could not open '$file' for reading $!";
1131         local $/ = undef;
1132         my $all = <$in>;
1133         close $in;
1134
1135         return $all;
1136 }
1137
1138 # Function to write a file with UTF-8 charset.
1139 sub write_file_utf8 ($) {
1140         my ($file, $content) = @_;
1141
1142         open my $out, '>:encoding(UTF-8)', $file or die "Could not open '$file' for writing $!";;
1143         print $out $content;
1144         close $out;
1145
1146         return;
1147 }
1148
1149 my $FIREWALL_RELOAD_INDICATOR = "${General::swroot}/firewall/reread";
1150
1151 sub firewall_config_changed() {
1152         open FILE, ">$FIREWALL_RELOAD_INDICATOR" or die "Could not open $FIREWALL_RELOAD_INDICATOR";
1153         close FILE;
1154 }
1155
1156 sub firewall_needs_reload() {
1157         if (-e "$FIREWALL_RELOAD_INDICATOR") {
1158                 return 1;
1159         }
1160
1161         return 0;
1162 }
1163
1164 sub firewall_reload() {
1165         system("/usr/local/bin/firewallctrl");
1166 }
1167
1168 1;