# SmoothWall CGIs # # This code is distributed under the terms of the GPL # # (c) The SmoothWall Team # Copyright (C) 2002 Alex Hudson - getcgihash() rewrite # Copyright (C) 2002 Bob Grant - validmac() # Copyright (c) 2002/04/13 Steve Bootes - add alias section, helper functions # Copyright (c) 2002/08/23 Mark Wormgoor validfqdn() # Copyright (c) 2003/09/11 Darren Critchley srtarray() # # $Id: general-functions.pl,v 1.1.2.26 2006/01/04 16:33:55 franck78 Exp $ # package General; use strict; use Socket; use IO::Socket; use Net::SSLeay; use Net::IPv4Addr qw(:all); $|=1; # line buffering $General::version = 'VERSION'; $General::swroot = 'CONFIG_ROOT'; $General::noipprefix = 'noipg-'; $General::adminmanualurl = 'http://wiki.ipfire.org'; # # log ("message") use default 'ipcop' tag # log ("tag","message") use your tag # sub log { my $tag='ipfire'; $tag = shift if (@_>1); my $logmessage = $_[0]; $logmessage =~ /([\w\W]*)/; $logmessage = $1; system('logger', '-t', $tag, $logmessage); } sub setup_default_networks { my %netsettings=(); my $defaultNetworks = shift; &readhash("/var/ipfire/ethernet/settings", \%netsettings); # Get current defined networks (Red, Green, Blue, Orange) $defaultNetworks->{$Lang::tr{'fwhost any'}}{'IPT'} = "0.0.0.0/0.0.0.0"; $defaultNetworks->{$Lang::tr{'fwhost any'}}{'NAME'} = "ALL"; $defaultNetworks->{$Lang::tr{'green'}}{'IPT'} = "$netsettings{'GREEN_NETADDRESS'}/$netsettings{'GREEN_NETMASK'}"; $defaultNetworks->{$Lang::tr{'green'}}{'NET'} = "$netsettings{'GREEN_ADDRESS'}"; $defaultNetworks->{$Lang::tr{'green'}}{'NAME'} = "GREEN"; if ($netsettings{'RED_DEV'} ne ''){ $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'IPT'} = "$netsettings{'RED_NETADDRESS'}/$netsettings{'RED_NETMASK'}"; $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'NET'} = "$netsettings{'RED_ADDRESS'}"; $defaultNetworks->{$Lang::tr{'fwdfw red'}}{'NAME'} = "RED"; } if ($netsettings{'ORANGE_DEV'} ne ''){ $defaultNetworks->{$Lang::tr{'orange'}}{'IPT'} = "$netsettings{'ORANGE_NETADDRESS'}/$netsettings{'ORANGE_NETMASK'}"; $defaultNetworks->{$Lang::tr{'orange'}}{'NET'} = "$netsettings{'ORANGE_ADDRESS'}"; $defaultNetworks->{$Lang::tr{'orange'}}{'NAME'} = "ORANGE"; } if ($netsettings{'BLUE_DEV'} ne ''){ $defaultNetworks->{$Lang::tr{'blue'}}{'IPT'} = "$netsettings{'BLUE_NETADDRESS'}/$netsettings{'BLUE_NETMASK'}"; $defaultNetworks->{$Lang::tr{'blue'}}{'NET'} = "$netsettings{'BLUE_ADDRESS'}"; $defaultNetworks->{$Lang::tr{'blue'}}{'NAME'} = "BLUE"; } #IPFire himself $defaultNetworks->{'IPFire'}{'NAME'} = "IPFire"; # OpenVPN if(-e "${General::swroot}/ovpn/settings") { my %ovpnSettings = (); &readhash("${General::swroot}/ovpn/settings", \%ovpnSettings); # OpenVPN on Red? if(defined($ovpnSettings{'DOVPN_SUBNET'})) { my ($ip,$sub) = split(/\//,$ovpnSettings{'DOVPN_SUBNET'}); $sub=&General::iporsubtocidr($sub); my @tempovpnsubnet = split("\/", $ovpnSettings{'DOVPN_SUBNET'}); $defaultNetworks->{'OpenVPN ' ."($ip/$sub)"}{'ADR'} = $tempovpnsubnet[0]; $defaultNetworks->{'OpenVPN ' ."($ip/$sub)"}{'NAME'} = "OpenVPN-Dyn"; } } # end OpenVPN # IPsec RW NET if(-e "${General::swroot}/vpn/settings") { my %ipsecsettings = (); &readhash("${General::swroot}/vpn/settings", \%ipsecsettings); if($ipsecsettings{'RW_NET'} ne '') { my ($ip,$sub) = split(/\//,$ipsecsettings{'RW_NET'}); $sub=&General::iporsubtocidr($sub); my @tempipsecsubnet = split("\/", $ipsecsettings{'RW_NET'}); $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'ADR'} = $tempipsecsubnet[0]; $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'NAME'} = "IPsec RW"; $defaultNetworks->{'IPsec RW (' .$ip."/".$sub.")"}{'NET'} = &getnextip($ip); } } } sub get_aliases { my $defaultNetworks = shift; open(FILE, "${General::swroot}/ethernet/aliases") or die 'Unable to open aliases file.'; my @current = ; close(FILE); my $ctr = 0; foreach my $line (@current) { if ($line ne ''){ chomp($line); my @temp = split(/\,/,$line); if ($temp[2] eq '') { $temp[2] = "Alias $ctr : $temp[0]"; } $defaultNetworks->{$temp[2]}{'IPT'} = "$temp[0]"; $defaultNetworks->{$temp[2]}{'NET'} = "$temp[0]"; $ctr++; } } } sub readhash { my $filename = $_[0]; my $hash = $_[1]; my ($var, $val); # Some ipcop code expects that readhash 'complete' the hash if new entries # are presents. Not clear it !!! #%$hash = (); open(FILE, $filename) or die "Unable to read file $filename"; while () { chop; ($var, $val) = split /=/, $_, 2; if ($var) { $val =~ s/^\'//g; $val =~ s/\'$//g; # Untaint variables read from hash # trim space from begin and end $var =~ s/^\s+//; $var =~ s/\s+$//; $var =~ /([A-Za-z0-9_-]*)/; $var = $1; $val =~ /([\w\W]*)/; $val = $1; $hash->{$var} = $val; } } close FILE; } sub writehash { my $filename = $_[0]; my $hash = $_[1]; my ($var, $val); # write cgi vars to the file. open(FILE, ">${filename}") or die "Unable to write file $filename"; flock FILE, 2; foreach $var (keys %$hash) { if ( $var eq "__CGI__"){next;} $val = $hash->{$var}; # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y # location of the mouse are submitted as well, this was being written to the settings file causing # some serious grief! This skips the variable.x and variable.y if (!($var =~ /(.x|.y)$/)) { if ($val =~ / /) { $val = "\'$val\'"; } if (!($var =~ /^ACTION/)) { print FILE "${var}=${val}\n"; } } } close FILE; } sub writehashpart { # This function replaces the given hash in the original hash by keeping the old # content and just replacing the new content my $filename = $_[0]; my $newhash = $_[1]; my %oldhash; my ($var, $val); readhash("${filename}", \%oldhash); foreach $var (keys %$newhash){ $oldhash{$var}=$newhash->{$var}; } # write cgi vars to the file. open(FILE, ">${filename}") or die "Unable to write file $filename"; flock FILE, 2; foreach $var (keys %oldhash) { if ( $var eq "__CGI__"){next;} $val = $oldhash{$var}; # Darren Critchley Jan 17, 2003 added the following because when submitting with a graphic, the x and y # location of the mouse are submitted as well, this was being written to the settings file causing # some serious grief! This skips the variable.x and variable.y if (!($var =~ /(.x|.y)$/)) { if ($val =~ / /) { $val = "\'$val\'"; } if (!($var =~ /^ACTION/)) { print FILE "${var}=${val}\n"; } } } close FILE; } sub age { my ($dev, $ino, $mode, $nlink, $uid, $gid, $rdev, $size, $atime, $mtime, $ctime, $blksize, $blocks) = stat $_[0]; my $totalsecs = time() - $mtime; my @s = (); my $secs = $totalsecs % 60; $totalsecs /= 60; if ($secs > 0) { push(@s, "${secs}s"); } my $min = $totalsecs % 60; $totalsecs /= 60; if ($min > 0) { push(@s, "${min}m"); } my $hrs = $totalsecs % 24; $totalsecs /= 24; if ($hrs > 0) { push(@s, "${hrs}h"); } my $days = int($totalsecs); if ($days > 0) { push(@s, "${days}d"); } return join(" ", reverse(@s)); } sub validip { my $ip = $_[0]; if (!($ip =~ /^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)) { return 0; } else { my @octets = ($1, $2, $3, $4); foreach $_ (@octets) { if (/^0./) { return 0; } if ($_ < 0 || $_ > 255) { return 0; } } return 1; } } sub validmask { my $mask = $_[0]; # secord part an ip? if (&validip($mask)) { return 1; } # second part a number? if (/^0/) { return 0; } if (!($mask =~ /^\d+$/)) { return 0; } if ($mask >= 0 && $mask <= 32) { return 1; } return 0; } sub validipormask { my $ipormask = $_[0]; # see if it is a IP only. if (&validip($ipormask)) { return 1; } # split it into number and mask. if (!($ipormask =~ /^(.*?)\/(.*?)$/)) { return 0; } my $ip = $1; my $mask = $2; # first part not a ip? if (!(&validip($ip))) { return 0; } return &validmask($mask); } sub subtocidr { #gets: Subnet in decimal (255.255.255.0) #Gives: 24 (The cidr of network) my ($byte1, $byte2, $byte3, $byte4) = split(/\./, $_[0].".0.0.0.0"); my $num = ($byte1 * 16777216) + ($byte2 * 65536) + ($byte3 * 256) + $byte4; my $bin = unpack("B*", pack("N", $num)); my $count = ($bin =~ tr/1/1/); return $count; } sub cidrtosub { #gets: Cidr of network (20-30 for ccd) #Konverts 30 to 255.255.255.252 e.g my $cidr=$_[0]; my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr); return "$netmask"; } sub iporsubtodec { #Gets: Ip address or subnetmask in decimal oder CIDR #Gives: What it gets only in CIDR format my $subnet=$_[0]; my $net; my $mask; my $full=0; if ($subnet =~ /^(.*?)\/(.*?)$/) { ($net,$mask) = split (/\//,$subnet); $full=1; return "$subnet"; }else{ $mask=$subnet; } #Subnet already in decimal and valid? if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255 && $2<=$1 && $3<=$2 && $4<=$3 ))) { for (my $i=0;$i<=32;$i++){ if (&General::cidrtosub($i) eq $mask){ if ($full == 0){return $mask;}else{ return $net."/".$mask; } } } } #Subnet in binary format? if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=0))){ if($full == 0){ return &General::cidrtosub($mask);}else{ return $net."/".&General::cidrtosub($mask); } }else{ return 3; } return 3; } sub iporsubtocidr { #gets: Ip Address or subnetmask in decimal oder CIDR #Gives: What it gets only in CIDR format my $subnet=$_[0]; my $net; my $mask; my $full=0; if ($subnet =~ /^(.*?)\/(.*?)$/) { ($net,$mask) = split (/\//,$subnet); $full=1; }else{ $mask=$subnet; } #Subnet in decimal and valid? if ($mask=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255 && $2<=$1 && $3<=$2 && $4<=$3 ))) { for (my $i=0;$i<=32;$i++){ if (&General::cidrtosub($i) eq $mask){ if ($full == 0){return &General::subtocidr($mask);}else{ return $net."/".&General::subtocidr($mask); } } } } #Subnet already in binary format? if ($mask=~/^(\d{1,2})$/ && (($1<=32 && $1>=0))){ if($full == 0){ return $mask;}else{ return $net."/".$mask; } }else{ return 3; } return 3; } sub getnetworkip { #Gets: IP, CIDR (10.10.10.0-255, 24) #Gives: 10.10.10.0 my ($ccdip,$ccdsubnet) = @_; my $ip_address_binary = &Socket::inet_pton( AF_INET,$ccdip ); my $netmask_binary = &Socket::inet_pton(AF_INET,&iporsubtodec($ccdsubnet)); my $network_address = &Socket::inet_ntop( AF_INET,$ip_address_binary & $netmask_binary ); return $network_address; } sub getccdbc { #Gets: IP in Form ("192.168.0.0/24") #Gives: Broadcastaddress of network my $ccdnet=$_; my ($ccdip,$ccdsubnet) = split "/",$ccdnet; my $ip_address_binary = inet_aton( $ccdip ); my $netmask_binary = ~pack("N", (2**(32-$ccdsubnet))-1); my $broadcast_address = inet_ntoa( $ip_address_binary | ~$netmask_binary ); return $broadcast_address; } sub ip2dec { my $ip_num; my $ip=$_[0]; if ( $ip =~ /(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/ ) { $ip_num = (($1*256**3) + ($2*256**2) + ($3*256) + $4); } else { $ip_num = -1; } $ip_num = (($1*256**3) + ($2*256**2) + ($3*256) + $4); return($ip_num); } sub dec2ip { my $ip; my $ip_num=$_[0]; my $o1=$ip_num%256; $ip_num=int($ip_num/256); my $o2=$ip_num%256; $ip_num=int($ip_num/256); my $o3=$ip_num%256; $ip_num=int($ip_num/256); my $o4=$ip_num%256; $ip="$o4.$o3.$o2.$o1"; return ($ip); } sub getnextip { my $decip=&ip2dec($_[0]); $decip=$decip+4; return &dec2ip($decip); } sub getlastip { my $decip=&ip2dec($_[0]); $decip--; return &dec2ip($decip); } sub validipandmask { #Gets: Ip address in 192.168.0.0/24 or 192.168.0.0/255.255.255.0 and checks if subnet valid #Gives: True bzw 0 if success or false my $ccdnet=$_[0]; my $subcidr; if (!($ccdnet =~ /^(.*?)\/(.*?)$/)) { return 0; } my ($ccdip,$ccdsubnet)=split (/\//, $ccdnet); #IP valid? if ($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 && $4<=255 ))) { #Subnet in decimal and valid? if ($ccdsubnet=~/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/ &&(($1<=255 && $2<=$1 && $3<=$2 && $4<=$3 ))) { for (my $i=0;$i<=32;$i++){ if (&General::cidrtosub($i) eq $ccdsubnet){ return 1; } } #Subnet already in binary format? }elsif ($ccdsubnet=~/^(\d{1,2})$/ && (($1<=32 && $1>=0))){ return 1; }else{ return 0; } } return 0; } sub checksubnets { my %ccdconfhash=(); my %ovpnconfhash=(); my %vpnconf=(); my %ipsecconf=(); my %ownnet=(); my %ovpnconf=(); my @ccdconf=(); my $ccdname=$_[0]; my $ccdnet=$_[1]; my $ownnet=$_[2]; my $errormessage; my ($ip,$cidr)=split(/\//,$ccdnet); $cidr=&iporsubtocidr($cidr); #get OVPN-Subnet (dynamic range) &readhash("${General::swroot}/ovpn/settings", \%ovpnconf); my ($ovpnip,$ovpncidr)= split (/\//,$ovpnconf{'DOVPN_SUBNET'}); $ovpncidr=&iporsubtocidr($ovpncidr); #check if we try to use same network as ovpn server if ("$ip/$cidr" eq "$ovpnip/$ovpncidr") { $errormessage=$errormessage.$Lang::tr{'ccd err isovpnnet'}."
"; return $errormessage; } #check if we try to use same network as another ovpn N2N if($ownnet ne 'ovpn'){ &readhasharray("${General::swroot}/ovpn/ovpnconfig", \%ovpnconfhash); foreach my $key (keys %ovpnconfhash) { if ($ovpnconfhash{$key}[3] eq 'net'){ my @ovpnnet=split (/\//,$ovpnconfhash{$key}[11]); if (&IpInSubnet($ip,$ovpnnet[0],&iporsubtodec($ovpnnet[1]))){ $errormessage=$errormessage.$Lang::tr{'ccd err isovpnn2n'}." $ovpnconfhash{$key}[1]
"; return $errormessage; } } } } #check if we use a network-name/subnet (static-ovpn) that already exists &readhasharray("${General::swroot}/ovpn/ccd.conf", \%ccdconfhash); foreach my $key (keys %ccdconfhash) { @ccdconf=split(/\//,$ccdconfhash{$key}[1]); if ($ccdname eq $ccdconfhash{$key}[0]) { $errormessage=$errormessage.$Lang::tr{'ccd err nameexist'}."
"; return $errormessage; } my ($newip,$newsub) = split(/\//,$ccdnet); if (&IpInSubnet($newip,$ccdconf[0],&iporsubtodec($ccdconf[1]))) { $errormessage=$errormessage.$Lang::tr{'ccd err issubnet'}." $ccdconfhash{$key}[0]
"; return $errormessage; } } #check if we use a ipsec right network which is already defined if($ownnet ne 'ipsec'){ &General::readhasharray("${General::swroot}/vpn/config", \%ipsecconf); foreach my $key (keys %ipsecconf){ if ($ipsecconf{$key}[11] ne ''){ my ($ipsecip,$ipsecsub) = split (/\//, $ipsecconf{$key}[11]); $ipsecsub=&iporsubtodec($ipsecsub); if($ipsecconf{$key}[1] ne $ccdname){ if ( &IpInSubnet ($ip,$ipsecip,$ipsecsub) ){ $errormessage=$Lang::tr{'ccd err isipsecnet'}." Name: $ipsecconf{$key}[1]"; return $errormessage; } } } } } #check if we use the ipsec RW Network (if defined) &readhash("${General::swroot}/vpn/settings", \%vpnconf); if ($vpnconf{'RW_NET'} ne ''){ my ($ipsecrwnet,$ipsecrwsub)=split (/\//, $vpnconf{'RW_NET'}); if (&IpInSubnet($ip,$ipsecrwnet,&iporsubtodec($ipsecrwsub))) { $errormessage=$errormessage.$Lang::tr{'ccd err isipsecrw'}."
"; return $errormessage; } } #check if we use one of ipfire's networks (green,orange,blue) &readhash("${General::swroot}/ethernet/settings", \%ownnet); 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 $errormessage;} if (($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 $errormessage;} if (($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 $errormessage;} if (($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;} } sub check_net_internal{ my $network=shift; my ($ip,$cidr)=split(/\//,$network); my %ownnet=(); my $errormessage; $cidr=&iporsubtocidr($cidr); #check if we use one of ipfire's networks (green,orange,blue) &readhash("${General::swroot}/ethernet/settings", \%ownnet); if (($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 $errormessage;} if (($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 $errormessage;} if (($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 $errormessage;} if (($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;} } sub validport { $_ = $_[0]; if (!/^\d+$/) { return 0; } if (/^0./) { return 0; } if ($_ >= 1 && $_ <= 65535) { return 1; } return 0; } sub validproxyport { $_ = $_[0]; if (!/^\d+$/) { return 0; } if (/^0./) { return 0; } if ($_ == 53 || $_ == 222 || $_ == 444 || $_ == 81 ) { return 0; } elsif ($_ >= 1 && $_ <= 65535) { return 1; } return 0; } sub validmac { my $checkmac = $_[0]; my $ot = '[0-9a-f]{2}'; # 2 Hex digits (one octet) if ($checkmac !~ /^$ot:$ot:$ot:$ot:$ot:$ot$/i) { return 0; } return 1; } sub validhostname { # Checks a hostname against RFC1035 my $hostname = $_[0]; # Each part should be at least two characters in length # but no more than 63 characters if (length ($hostname) < 1 || length ($hostname) > 63) { return 0;} # Only valid characters are a-z, A-Z, 0-9 and - if ($hostname !~ /^[a-zA-Z0-9-\s]*$/) { return 0;} # First character can only be a letter or a digit if (substr ($hostname, 0, 1) !~ /^[a-zA-Z0-9]*$/) { return 0;} # Last character can only be a letter or a digit if (substr ($hostname, -1, 1) !~ /^[a-zA-Z0-9]*$/) { return 0;} return 1; } sub validdomainname { my $part; # Checks a domain name against RFC1035 my $domainname = $_[0]; my @parts = split (/\./, $domainname); # Split hostname at the '.' foreach $part (@parts) { # Each part should be at least two characters in length # but no more than 63 characters if (length ($part) < 2 || length ($part) > 63) { return 0;} # Only valid characters are a-z, A-Z, 0-9 and - if ($part !~ /^[a-zA-Z0-9-]*$/) { return 0;} # First character can only be a letter or a digit if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) { return 0;} # Last character can only be a letter or a digit if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) { return 0;} } return 1; } sub validfqdn { my $part; # Checks a fully qualified domain name against RFC1035 my $fqdn = $_[0]; my @parts = split (/\./, $fqdn); # Split hostname at the '.' if (scalar(@parts) < 2) { # At least two parts should return 0;} # exist in a FQDN # (i.e. hostname.domain) foreach $part (@parts) { # Each part should be at least one character in length # but no more than 63 characters if (length ($part) < 1 || length ($part) > 63) { return 0;} # Only valid characters are a-z, A-Z, 0-9 and - if ($part !~ /^[a-zA-Z0-9-]*$/) { return 0;} # First character can only be a letter or a digit if (substr ($part, 0, 1) !~ /^[a-zA-Z0-9]*$/) { return 0;} # Last character can only be a letter or a digit if (substr ($part, -1, 1) !~ /^[a-zA-Z0-9]*$/) { return 0;} } return 1; } sub validportrange # used to check a port range { my $port = $_[0]; # port values $port =~ tr/-/:/; # replace all - with colons just in case someone used - my $srcdst = $_[1]; # is it a source or destination port if (!($port =~ /^(\d+)\:(\d+)$/)) { if (!(&validport($port))) { if ($srcdst eq 'src'){ return $Lang::tr{'source port numbers'}; } else { return $Lang::tr{'destination port numbers'}; } } } else { my @ports = ($1, $2); if ($1 >= $2){ if ($srcdst eq 'src'){ return $Lang::tr{'bad source range'}; } else { return $Lang::tr{'bad destination range'}; } } foreach $_ (@ports) { if (!(&validport($_))) { if ($srcdst eq 'src'){ return $Lang::tr{'source port numbers'}; } else { return $Lang::tr{'destination port numbers'}; } } } return; } } # Test if IP is within a subnet # Call: IpInSubnet (Addr, Subnet, Subnet Mask) # Subnet can be an IP of the subnet: 10.0.0.0 or 10.0.0.1 # Everything in dottted notation # Return: TRUE/FALSE sub IpInSubnet { my $addr = shift; my $network = shift; my $netmask = shift; my $addr_num = &Socket::inet_pton(AF_INET,$addr); my $network_num = &Socket::inet_pton(AF_INET,$network); my $netmask_num = &Socket::inet_pton(AF_INET,$netmask); # Find start address my $network_start = $network_num & $netmask_num; # Find end address my $network_end = $network_start ^ ~$netmask_num; return (($addr_num ge $network_start) && ($addr_num le $network_end)); } # # Return the following IP (IP+1) in dotted notation. # Call: NextIP ('1.1.1.1'); # Return: '1.1.1.2' # sub NextIP { return &Socket::inet_ntoa( pack("N", 1 + unpack('N', &Socket::inet_aton(shift)) ) ); } sub NextIP2 { return &Socket::inet_ntoa( pack("N", 4 + unpack('N', &Socket::inet_aton(shift)) ) ); } sub ipcidr { my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift); return "$ip\/$cidr"; } sub ipcidr2msk { my ($ip,$cidr) = &Net::IPv4Addr::ipv4_parse(shift); my $netmask = &Net::IPv4Addr::ipv4_cidr2msk($cidr); return "$ip\/$netmask"; } sub validemail { my $mail = shift; return 0 if ( $mail !~ /^[0-9a-zA-Z\.\-\_]+\@[0-9a-zA-Z\.\-]+$/ ); return 0 if ( $mail =~ /^[^0-9a-zA-Z]|[^0-9a-zA-Z]$/); return 0 if ( $mail !~ /([0-9a-zA-Z]{1})\@./ ); return 0 if ( $mail !~ /.\@([0-9a-zA-Z]{1})/ ); return 0 if ( $mail =~ /.\.\-.|.\-\..|.\.\..|.\-\-./g ); return 0 if ( $mail =~ /.\.\_.|.\-\_.|.\_\..|.\_\-.|.\_\_./g ); return 0 if ( $mail !~ /\.([a-zA-Z]{2,4})$/ ); return 1; } # # Currently only vpnmain use this three procs (readhasharray, writehasharray, findhasharray) # The 'key' used is numeric but is perfectly unneeded! This will to be removed so don't use # this code. Vpnmain will be splitted in parts: x509/pki, connection ipsec, connection other,... . # sub readhasharray { my ($filename, $hash) = @_; %$hash = (); open(FILE, $filename) or die "Unable to read file $filename"; while () { my ($key, $rest, @temp); chomp; ($key, $rest) = split (/,/, $_, 2); if ($key =~ /^[0-9]+$/) { @temp = split (/,/, $rest); $hash->{$key} = \@temp; } } close FILE; return; } sub writehasharray { my ($filename, $hash) = @_; my ($key, @temp, $i); open(FILE, ">$filename") or die "Unable to write to file $filename"; foreach $key (keys %$hash) { if ($key =~ /^[0-9]+$/) { print FILE "$key"; foreach $i (0 .. $#{$hash->{$key}}) { print FILE ",$hash->{$key}[$i]"; } print FILE "\n"; } } close FILE; return; } sub findhasharraykey { foreach my $i (1 .. 1000000) { if ( ! exists $_[0]{$i}) { return $i; } } } sub srtarray # Darren Critchley - darrenc@telus.net - (c) 2003 # &srtarray(SortOrder, AlphaNumeric, SortDirection, ArrayToBeSorted) # This subroutine will take the following parameters: # ColumnNumber = the column which you want to sort on, starts at 1 # AlphaNumberic = a or n (lowercase) defines whether the sort should be alpha or numberic # SortDirection = asc or dsc (lowercase) Ascending or Descending sort # ArrayToBeSorted = the array that wants sorting # # Returns an array that is sorted to your specs # # If SortOrder is greater than the elements in array, then it defaults to the first element # { my ($colno, $alpnum, $srtdir, @tobesorted) = @_; my @tmparray; my @srtedarray; my $line; my $newline; my $ctr; my $ttlitems = scalar @tobesorted; # want to know the number of rows in the passed array if ($ttlitems < 1){ # if no items, don't waste our time lets leave return (@tobesorted); } my @tmp = split(/\,/,$tobesorted[0]); $ttlitems = scalar @tmp; # this should be the number of elements in each row of the passed in array # Darren Critchley - validate parameters if ($colno > $ttlitems){$colno = '1';} $colno--; # remove one from colno to deal with arrays starting at 0 if($colno < 0){$colno = '0';} if ($alpnum ne '') { $alpnum = lc($alpnum); } else { $alpnum = 'a'; } if ($srtdir ne '') { $srtdir = lc($srtdir); } else { $srtdir = 'src'; } foreach $line (@tobesorted) { chomp($line); if ($line ne '') { my @temp = split(/\,/,$line); # Darren Critchley - juggle the fields so that the one we want to sort on is first my $tmpholder = $temp[0]; $temp[0] = $temp[$colno]; $temp[$colno] = $tmpholder; $newline = ""; for ($ctr=0; $ctr < $ttlitems ; $ctr++) { $newline=$newline . $temp[$ctr] . ","; } chop($newline); push(@tmparray,$newline); } } if ($alpnum eq 'n') { @tmparray = sort {$a <=> $b} @tmparray; } else { @tmparray = (sort @tmparray); } foreach $line (@tmparray) { chomp($line); if ($line ne '') { my @temp = split(/\,/,$line); my $tmpholder = $temp[0]; $temp[0] = $temp[$colno]; $temp[$colno] = $tmpholder; $newline = ""; for ($ctr=0; $ctr < $ttlitems ; $ctr++){ $newline=$newline . $temp[$ctr] . ","; } chop($newline); push(@srtedarray,$newline); } } if ($srtdir eq 'dsc') { @tmparray = reverse(@srtedarray); return (@tmparray); } else { return (@srtedarray); } } sub FetchPublicIp { my %proxysettings; &General::readhash("${General::swroot}/proxy/settings", \%proxysettings); if ($_=$proxysettings{'UPSTREAM_PROXY'}) { my ($peer, $peerport) = (/^(?:[a-zA-Z ]+\:\/\/)?(?:[A-Za-z0-9\_\.\-]*?(?:\:[A-Za-z0-9\_\.\-]*?)?\@)?([a-zA-Z0-9\.\_\-]*?)(?:\:([0-9]{1,5}))?(?:\/.*?)?$/); Net::SSLeay::set_proxy($peer,$peerport,$proxysettings{'UPSTREAM_USER'},$proxysettings{'UPSTREAM_PASSWORD'} ); } my $user_agent = &MakeUserAgent(); my ($out, $response) = Net::SSLeay::get_http( 'checkip4.dns.lightningwirelabs.com', 80, "/", Net::SSLeay::make_headers('User-Agent' => $user_agent ) ); if ($response =~ m%HTTP/1\.. 200 OK%) { $out =~ /Your IP address is: (\d+.\d+.\d+.\d+)/; return $1; } return ''; } # # Check if hostname.domain provided have IP provided # use gethostbyname to verify that # Params: # IP # hostname # domain # Output # 1 IP matches host.domain # 0 not in sync # sub DyndnsServiceSync ($;$;$) { my ($ip,$hostName,$domain) = @_; my @addresses; #fix me no ip GROUP, what is the name ? $hostName =~ s/$General::noipprefix//; if ($hostName) { #may be empty $hostName = "$hostName.$domain"; @addresses = gethostbyname($hostName); } if ($addresses[0] eq '') { # nothing returned ? $hostName = $domain; # try resolving with domain only @addresses = gethostbyname($hostName); } if ($addresses[0] ne '') { # got something ? #&General::log("name:$addresses[0], alias:$addresses[1]"); # Build clear text list of IP @addresses = map ( &Socket::inet_ntoa($_), @addresses[4..$#addresses]); if (grep (/$ip/, @addresses)) { return 1; } } return 0; } # # This sub returns the red IP used to compare in DyndnsServiceSync # sub GetDyndnsRedIP { my %settings; &General::readhash("${General::swroot}/ddns/settings", \%settings); open(IP, "${General::swroot}/red/local-ipaddress") or return 'unavailable'; my $ip = ; close(IP); chomp $ip; # 100.64.0.0/10 is reserved for dual-stack lite (http://tools.ietf.org/html/rfc6598). if (&General::IpInSubnet ($ip,'10.0.0.0','255.0.0.0') || &General::IpInSubnet ($ip,'172.16.0.0.','255.240.0.0') || &General::IpInSubnet ($ip,'192.168.0.0','255.255.0.0') || &General::IpInSubnet ($ip,'100.64.0.0', '255.192.0.0')) { if ($settings{'BEHINDROUTER'} eq 'FETCH_IP') { my $RealIP = &General::FetchPublicIp; $ip = (&General::validip ($RealIP) ? $RealIP : 'unavailable'); } } return $ip; } # Translate ICMP code to text # ref: http://www.iana.org/assignments/icmp-parameters sub GetIcmpDescription ($) { my $index = shift; my @icmp_description = ( 'Echo Reply', #0 'Unassigned', 'Unassigned', 'Destination Unreachable', 'Source Quench', 'Redirect', 'Alternate Host Address', 'Unassigned', 'Echo', 'Router Advertisement', 'Router Solicitation', #10 'Time Exceeded', 'Parameter Problem', 'Timestamp', 'Timestamp Reply', 'Information Request', 'Information Reply', 'Address Mask Request', 'Address Mask Reply', 'Reserved (for Security)', 'Reserved (for Robustness Experiment)', #20 'Reserved', 'Reserved', 'Reserved', 'Reserved', 'Reserved', 'Reserved', 'Reserved', 'Reserved', 'Reserved', 'Traceroute', #30 'Datagram Conversion Error', 'Mobile Host Redirect', 'IPv6 Where-Are-You', 'IPv6 I-Am-Here', 'Mobile Registration Request', 'Mobile Registration Reply', 'Domain Name Request', 'Domain Name Reply', 'SKIP', 'Photur', #40 'Experimental'); if ($index>41) {return 'unknown'} else {return $icmp_description[$index]}; } sub GetCoreUpdateVersion() { my $core_update; open(FILE, "/opt/pakfire/db/core/mine"); while () { $core_update = $_; last; } close(FILE); return $core_update; } sub MakeUserAgent() { my $user_agent = "IPFire/$General::version"; my $core_update = &GetCoreUpdateVersion(); if ($core_update ne "") { $user_agent .= "/$core_update"; } return $user_agent; } sub RedIsWireless() { # This function checks if a network device is a wireless device. my %settings = (); &readhash("${General::swroot}/ethernet/settings", \%settings); # Find the name of the network device. my $device = $settings{'RED_DEV'}; # Exit, if no device is configured. return 0 if ($device eq ""); # Return 1 if the device is a wireless one. my $path = "/sys/class/net/$device/wireless"; if (-d $path) { return 1; } # Otherwise return zero. return 0; } # Function to read a file with UTF-8 charset. sub read_file_utf8 ($) { my ($file) = @_; open my $in, '<:encoding(UTF-8)', $file or die "Could not open '$file' for reading $!"; local $/ = undef; my $all = <$in>; close $in; return $all; } # Function to write a file with UTF-8 charset. sub write_file_utf8 ($) { my ($file, $content) = @_; open my $out, '>:encoding(UTF-8)', $file or die "Could not open '$file' for writing $!";; print $out $content; close $out; return; } my $FIREWALL_RELOAD_INDICATOR = "${General::swroot}/firewall/reread"; sub firewall_config_changed() { open FILE, ">$FIREWALL_RELOAD_INDICATOR" or die "Could not open $FIREWALL_RELOAD_INDICATOR"; close FILE; } sub firewall_needs_reload() { if (-e "$FIREWALL_RELOAD_INDICATOR") { return 1; } return 0; } sub firewall_reload() { system("/usr/local/bin/firewallctrl"); } # Function which will return the used interface for the red network zone (red0, ppp0, etc). sub get_red_interface() { open(IFACE, "${General::swroot}/red/iface") or die "Could not open /var/ipfire/red/iface"; my $interface = ; close(IFACE); chomp $interface; return $interface; } 1;