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 $i=0;$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 && $1>=0))){
 366                         if($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 $i=0;$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 && $1>=0))){
 402                         if($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 $ip_address_binary = &Socket::inet_pton( AF_INET,$ccdip );
 417         my $netmask_binary = &Socket::inet_pton(AF_INET,&iporsubtodec($ccdsubnet));
 418         my $network_address    = &Socket::inet_ntop( AF_INET,$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 $i=0;$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>=0))){
 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 $addr = shift;
 764         my $network = shift;
 765         my $netmask = shift;
 766
 767         my $addr_num = &Socket::inet_pton(AF_INET,$addr);
 768         my $network_num = &Socket::inet_pton(AF_INET,$network);
 769         my $netmask_num = &Socket::inet_pton(AF_INET,$netmask);
 770
 771         # Find start address
 772         my $network_start = $network_num & $netmask_num;
 773
 774         # Find end address
 775         my $network_end = $network_start ^ ~$netmask_num;
 776
 777         return (($addr_num ge $network_start) && ($addr_num le $network_end));
 778 }
 779
 780 #
 781 # Return the following IP (IP+1) in dotted notation.
 782 # Call: NextIP ('1.1.1.1');
 783 # Return: '1.1.1.2'
 784 #
 785 sub NextIP
 786 {
 787     return &Socket::inet_ntoa( pack("N", 1 +  unpack('N', &Socket::inet_aton(shift))
 788                                    )
 789                              );
 790 }
 791 sub NextIP2
 792 {
 793     return &Socket::inet_ntoa( pack("N", 4 +  unpack('N', &Socket::inet_aton(shift))
 794                                    )
 795                              );
 796 }
 797 sub ipcidr
 798 {
 799         my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift);
 800         return "$ip\/$cidr";
 801 }
 802
 803 sub ipcidr2msk
 804 {
 805        my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift);
 806        my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr);
 807        return "$ip\/$netmask";
 808 }
 809
 810
 811 sub validemail {
 812     my $mail = shift;
 813     return 0 if ( $mail !~ /^[0-9a-zA-Z\.\-\_]+\@[0-9a-zA-Z\.\-]+$/ );
 814     return 0 if ( $mail =~ /^[^0-9a-zA-Z]|[^0-9a-zA-Z]$/);
 815     return 0 if ( $mail !~ /([0-9a-zA-Z]{1})\@./ );
 816     return 0 if ( $mail !~ /.\@([0-9a-zA-Z]{1})/ );
 817     return 0 if ( $mail =~ /.\.\-.|.\-\..|.\.\..|.\-\-./g );
 818     return 0 if ( $mail =~ /.\.\_.|.\-\_.|.\_\..|.\_\-.|.\_\_./g );
 819     return 0 if ( $mail !~ /\.([a-zA-Z]{2,4})$/ );
 820     return 1;
 821 }
 822
 823 #
 824 # Currently only vpnmain use this three procs (readhasharray, writehasharray, findhasharray)
 825 # The 'key' used is numeric but is perfectly unneeded! This will to be removed so don't use
 826 # this code. Vpnmain will be splitted in parts: x509/pki, connection ipsec, connection other,... .
 827 #
 828 sub readhasharray {
 829     my ($filename, $hash) = @_;
 830     %$hash = ();
 831
 832     open(FILE, $filename) or die "Unable to read file $filename";
 833
 834     while (<FILE>) {
 835         my ($key, $rest, @temp);
 836         chomp;
 837         ($key, $rest) = split (/,/, $_, 2);
 838         if ($key =~ /^[0-9]+$/) {
 839             @temp = split (/,/, $rest);
 840             $hash->{$key} = \@temp;
 841         }
 842     }
 843     close FILE;
 844     return;
 845 }
 846
 847 sub writehasharray {
 848     my ($filename, $hash) = @_;
 849     my ($key, @temp, $i);
 850
 851     open(FILE, ">$filename") or die "Unable to write to file $filename";
 852
 853     foreach $key (keys %$hash) {
 854                 if ($key =~ /^[0-9]+$/) {
 855                         print FILE "$key";
 856                         foreach $i (0 .. $#{$hash->{$key}}) {
 857                                 print FILE ",$hash->{$key}[$i]";
 858                         }
 859                         print FILE "\n";
 860                 }
 861     }
 862     close FILE;
 863     return;
 864 }
 865
 866 sub findhasharraykey {
 867     foreach my $i (1 .. 1000000) {
 868         if ( ! exists $_[0]{$i}) {
 869              return $i;
 870         }
 871     }
 872 }
 873
 874 sub srtarray
 875 # Darren Critchley - darrenc@telus.net - (c) 2003
 876 # &srtarray(SortOrder, AlphaNumeric, SortDirection, ArrayToBeSorted)
 877 # This subroutine will take the following parameters:
 878 #   ColumnNumber = the column which you want to sort on, starts at 1
 879 #   AlphaNumberic = a or n (lowercase) defines whether the sort should be alpha or numberic
 880 #   SortDirection = asc or dsc (lowercase) Ascending or Descending sort
 881 #   ArrayToBeSorted = the array that wants sorting
 882 #
 883 #   Returns an array that is sorted to your specs
 884 #
 885 #   If SortOrder is greater than the elements in array, then it defaults to the first element
 886 #
 887 {
 888         my ($colno, $alpnum, $srtdir, @tobesorted) = @_;
 889         my @tmparray;
 890         my @srtedarray;
 891         my $line;
 892         my $newline;
 893         my $ctr;
 894         my $ttlitems = scalar @tobesorted; # want to know the number of rows in the passed array
 895         if ($ttlitems < 1){ # if no items, don't waste our time lets leave
 896                 return (@tobesorted);
 897         }
 898         my @tmp = split(/\,/,$tobesorted[0]);
 899         $ttlitems = scalar @tmp; # this should be the number of elements in each row of the passed in array
 900
 901         # Darren Critchley - validate parameters
 902         if ($colno > $ttlitems){$colno = '1';}
 903         $colno--; # remove one from colno to deal with arrays starting at 0
 904         if($colno < 0){$colno = '0';}
 905         if ($alpnum ne '') { $alpnum = lc($alpnum); } else { $alpnum = 'a'; }
 906         if ($srtdir ne '') { $srtdir = lc($srtdir); } else { $srtdir = 'src'; }
 907
 908         foreach $line (@tobesorted)
 909         {
 910                 chomp($line);
 911                 if ($line ne '') {
 912                         my @temp = split(/\,/,$line);
 913                         # Darren Critchley - juggle the fields so that the one we want to sort on is first
 914                         my $tmpholder = $temp[0];
 915                         $temp[0] = $temp[$colno];
 916                         $temp[$colno] = $tmpholder;
 917                         $newline = "";
 918                         for ($ctr=0; $ctr < $ttlitems ; $ctr++) {
 919                                 $newline=$newline . $temp[$ctr] . ",";
 920                         }
 921                         chop($newline);
 922                         push(@tmparray,$newline);
 923                 }
 924         }
 925         if ($alpnum eq 'n') {
 926                 @tmparray = sort {$a <=> $b} @tmparray;
 927         } else {
 928                 @tmparray = (sort @tmparray);
 929         }
 930         foreach $line (@tmparray)
 931         {
 932                 chomp($line);
 933                 if ($line ne '') {
 934                         my @temp = split(/\,/,$line);
 935                         my $tmpholder = $temp[0];
 936                         $temp[0] = $temp[$colno];
 937                         $temp[$colno] = $tmpholder;
 938                         $newline = "";
 939                         for ($ctr=0; $ctr < $ttlitems ; $ctr++){
 940                                 $newline=$newline . $temp[$ctr] . ",";
 941                         }
 942                         chop($newline);
 943                         push(@srtedarray,$newline);
 944                 }
 945         }
 946
 947         if ($srtdir eq 'dsc') {
 948                 @tmparray = reverse(@srtedarray);
 949                 return (@tmparray);
 950         } else {
 951                 return (@srtedarray);
 952         }
 953 }
 954
 955 sub FetchPublicIp {
 956     my %proxysettings;
 957     &General::readhash("${General::swroot}/proxy/settings", \%proxysettings);
 958     if ($_=$proxysettings{'UPSTREAM_PROXY'}) {
 959         my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/);
 960         Net::SSLeay::set_proxy($peer,$peerport,$proxysettings{'UPSTREAM_USER'},$proxysettings{'UPSTREAM_PASSWORD'} );
 961     }
 962     my $user_agent = &MakeUserAgent();
 963     my ($out, $response) = Net::SSLeay::get_http(  'checkip4.dns.lightningwirelabs.com',
 964                                                     80,
 965                                                     "/",
 966                                                     Net::SSLeay::make_headers('User-Agent' => $user_agent )
 967                                                 );
 968     if ($response =~ m%HTTP/1\.. 200 OK%) {
 969         $out =~ /Your IP address is: (\d+.\d+.\d+.\d+)/;
 970         return $1;
 971     }
 972     return '';
 973 }
 974
 975 #
 976 # Check if hostname.domain provided have IP provided
 977 # use gethostbyname to verify that
 978 # Params:
 979 #       IP
 980 #       hostname
 981 #       domain
 982 # Output
 983 #       1 IP matches host.domain
 984 #       0 not in sync
 985 #
 986 sub DyndnsServiceSync ($;$;$) {
 987
 988     my ($ip,$hostName,$domain) = @_;
 989     my @addresses;
 990
 991     #fix me no ip GROUP, what is the name ?
 992     $hostName =~ s/$General::noipprefix//;
 993     if ($hostName) { #may be empty
 994         $hostName = "$hostName.$domain";
 995         @addresses = gethostbyname($hostName);
 996     }
 997
 998     if ($addresses[0] eq '') {                  # nothing returned ?
 999         $hostName = $domain;                    # try resolving with domain only
1000         @addresses = gethostbyname($hostName);
1001     }
1002
1003     if ($addresses[0] ne '') {                  # got something ?
1004         #&General::log("name:$addresses[0], alias:$addresses[1]");
1005         # Build clear text list of IP
1006         @addresses = map ( &Socket::inet_ntoa($_), @addresses[4..$#addresses]);
1007         if (grep (/$ip/, @addresses)) {
1008             return 1;
1009         }
1010     }
1011     return 0;
1012 }
1013 #
1014 # This sub returns the red IP used to compare in DyndnsServiceSync
1015 #
1016 sub GetDyndnsRedIP {
1017     my %settings;
1018     &General::readhash("${General::swroot}/ddns/settings", \%settings);
1019
1020     open(IP, "${General::swroot}/red/local-ipaddress") or return 'unavailable';
1021     my $ip = <IP>;
1022     close(IP);
1023     chomp $ip;
1024
1025     # 100.64.0.0/10 is reserved for dual-stack lite (http://tools.ietf.org/html/rfc6598).
1026     if (&General::IpInSubnet ($ip,'10.0.0.0','255.0.0.0') ||
1027         &General::IpInSubnet ($ip,'172.16.0.0.','255.240.0.0') ||
1028         &General::IpInSubnet ($ip,'192.168.0.0','255.255.0.0') ||
1029         &General::IpInSubnet ($ip,'100.64.0.0', '255.192.0.0'))
1030     {
1031         if ($settings{'BEHINDROUTER'} eq 'FETCH_IP') {
1032             my $RealIP = &General::FetchPublicIp;
1033             $ip = (&General::validip ($RealIP) ?  $RealIP : 'unavailable');
1034         }
1035     }
1036     return $ip;
1037 }
1038
1039 # Translate ICMP code to text
1040 # ref: http://www.iana.org/assignments/icmp-parameters
1041 sub GetIcmpDescription ($) {
1042     my $index = shift;
1043     my @icmp_description = (
1044     'Echo Reply',                       #0
1045     'Unassigned',
1046     'Unassigned',
1047     'Destination Unreachable',
1048     'Source Quench',
1049     'Redirect',
1050     'Alternate Host Address',
1051     'Unassigned',
1052     'Echo',
1053     'Router Advertisement',
1054     'Router Solicitation',              #10
1055     'Time Exceeded',
1056     'Parameter Problem',
1057     'Timestamp',
1058     'Timestamp Reply',
1059     'Information Request',
1060     'Information Reply',
1061     'Address Mask Request',
1062     'Address Mask Reply',
1063     'Reserved (for Security)',
1064     'Reserved (for Robustness Experiment)', #20
1065     'Reserved',
1066     'Reserved',
1067     'Reserved',
1068     'Reserved',
1069     'Reserved',
1070     'Reserved',
1071     'Reserved',
1072     'Reserved',
1073     'Reserved',
1074     'Traceroute',                               #30
1075     'Datagram Conversion Error',
1076     'Mobile Host Redirect',
1077     'IPv6 Where-Are-You',
1078     'IPv6 I-Am-Here',
1079     'Mobile Registration Request',
1080     'Mobile Registration Reply',
1081     'Domain Name Request',
1082     'Domain Name Reply',
1083     'SKIP',
1084     'Photur',                           #40
1085     'Experimental');
1086     if ($index>41) {return 'unknown'} else {return $icmp_description[$index]};
1087 }
1088
1089 sub GetCoreUpdateVersion() {
1090         my $core_update;
1091
1092         open(FILE, "/opt/pakfire/db/core/mine");
1093         while (<FILE>) {
1094                 $core_update = $_;
1095                 last;
1096         }
1097         close(FILE);
1098
1099         return $core_update;
1100 }
1101
1102 sub MakeUserAgent() {
1103         my $user_agent = "IPFire/$General::version";
1104
1105         my $core_update = &GetCoreUpdateVersion();
1106         if ($core_update ne "") {
1107                 $user_agent .= "/$core_update";
1108         }
1109
1110         return $user_agent;
1111 }
1112
1113 sub RedIsWireless() {
1114         # This function checks if a network device is a wireless device.
1115
1116         my %settings = ();
1117         &readhash("${General::swroot}/ethernet/settings", \%settings);
1118
1119         # Find the name of the network device.
1120         my $device = $settings{'RED_DEV'};
1121
1122         # Exit, if no device is configured.
1123         return 0 if ($device eq "");
1124
1125         # Return 1 if the device is a wireless one.
1126         my $path = "/sys/class/net/$device/wireless";
1127         if (-d $path) {
1128                 return 1;
1129         }
1130
1131         # Otherwise return zero.
1132         return 0;
1133 }
1134
1135 # Function to read a file with UTF-8 charset.
1136 sub read_file_utf8 ($) {
1137         my ($file) = @_;
1138
1139         open my $in, '<:encoding(UTF-8)', $file or die "Could not open '$file' for reading $!";
1140         local $/ = undef;
1141         my $all = <$in>;
1142         close $in;
1143
1144         return $all;
1145 }
1146
1147 # Function to write a file with UTF-8 charset.
1148 sub write_file_utf8 ($) {
1149         my ($file, $content) = @_;
1150
1151         open my $out, '>:encoding(UTF-8)', $file or die "Could not open '$file' for writing $!";;
1152         print $out $content;
1153         close $out;
1154
1155         return;
1156 }
1157
1158 my $FIREWALL_RELOAD_INDICATOR = "${General::swroot}/firewall/reread";
1159
1160 sub firewall_config_changed() {
1161         open FILE, ">$FIREWALL_RELOAD_INDICATOR" or die "Could not open $FIREWALL_RELOAD_INDICATOR";
1162         close FILE;
1163 }
1164
1165 sub firewall_needs_reload() {
1166         if (-e "$FIREWALL_RELOAD_INDICATOR") {
1167                 return 1;
1168         }
1169
1170         return 0;
1171 }
1172
1173 sub firewall_reload() {
1174         system("/usr/local/bin/firewallctrl");
1175 }
1176
1177 1;