forked from extern/shorewall_code
Move prototol/port validation to the IPAddrs module
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@8146 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep
parent
569729014b
commit
5aeef8b231
@ -108,8 +108,6 @@ our %EXPORT_TAGS = (
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setup_zone_mss
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newexclusionchain
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clearrule
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validate_port
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proto_name
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do_proto
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mac_match
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verify_mark
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@ -985,137 +983,6 @@ sub clearrule() {
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$iprangematch = 0;
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}
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#
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# Resolve the contents of the PROTO column.
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#
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our %nametoproto = ( all => 0, ALL => 0, icmp => 1, ICMP => 1, tcp => 6, TCP => 6, udp => 17, UDP => 17 );
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our @prototoname = ( 'all', 'icmp', '', '', '', '', 'tcp', '', '', '', '', '', '', '', '', '', '', 'udp' );
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#
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# Returns the protocol number if the passed argument is a valid protocol number or name. Returns undef otherwise
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#
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sub resolve_proto( $ ) {
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my $proto = $_[0];
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my $number;
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$proto =~ /^(\d+)$/ ? $proto <= 65535 ? $proto : undef : defined( $number = $nametoproto{$proto} ) ? $number : scalar getprotobyname $proto;
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}
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sub proto_name( $ ) {
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my $proto = $_[0];
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$proto =~ /^(\d+)$/ ? $prototoname[ $proto ] || scalar getprotobynumber $proto : $proto
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}
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sub validate_port( $$ ) {
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my ($proto, $port) = @_;
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my $value;
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if ( $port =~ /^(\d+)$/ ) {
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return $port if $port <= 65535;
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} else {
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$proto = getprotobyname $proto if $proto =~ /^(\d+)$/;
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$value = getservbyname( $port, $proto );
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}
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fatal_error "Invalid/Unknown $proto port/service ($port)" unless defined $value;
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$value;
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}
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sub validate_portpair( $$ ) {
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my ($proto, $portpair) = @_;
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fatal_error "Invalid port range ($portpair)" if $portpair =~ tr/:/:/ > 1;
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$portpair = "0$portpair" if substr( $portpair, 0, 1 ) eq ':';
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$portpair = "${portpair}65535" if substr( $portpair, -1, 1 ) eq ':';
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my @ports = split /:/, $portpair, 2;
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$_ = validate_port( $proto, $_) for ( @ports );
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if ( @ports == 2 ) {
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fatal_error "Invalid port range ($portpair)" unless $ports[0] < $ports[1];
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}
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join ':', @ports;
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}
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sub validate_port_list( $$ ) {
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my $result = '';
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my ( $proto, $list ) = @_;
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my @list = split_list $list, 'port';
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if ( @list > 1 && $list =~ /:/ ) {
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require_capability( 'XMULTIPORT' , 'Port ranges in a port list', '' );
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}
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$proto = proto_name $proto;
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for ( @list ) {
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my $value = validate_portpair( $proto , $_ );
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$result = $result ? join ',', $result, $value : $value;
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}
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$result;
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}
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my %icmp_types = ( any => 'any',
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'echo-reply' => 0,
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'destination-unreachable' => 3,
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'network-unreachable' => '3/0',
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'host-unreachable' => '3/1',
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'protocol-unreachable' => '3/2',
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'port-unreachable' => '3/3',
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'fragmentation-needed' => '3/4',
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'source-route-failed' => '3/5',
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'network-unknown' => '3/6',
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'host-unknown' => '3/7',
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'network-prohibited' => '3/9',
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'host-prohibited' => '3/10',
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'TOS-network-unreachable' => '3/11',
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'TOS-host-unreachable' => '3/12',
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'communication-prohibited' => '3/13',
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'host-precedence-violation' => '3/14',
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'precedence-cutoff' => '3/15',
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'source-quench' => 4,
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'redirect' => 5,
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'network-redirect' => '5/0',
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'host-redirect' => '5/1',
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'TOS-network-redirect' => '5/2',
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'TOS-host-redirect' => '5/3',
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'echo-request' => '8',
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'router-advertisement' => 9,
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'router-solicitation' => 10,
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'time-exceeded' => 11,
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'ttl-zero-during-transit' => '11/0',
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'ttl-zero-during-reassembly' => '11/1',
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'parameter-problem' => 12,
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'ip-header-bad' => '12/0',
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'required-option-missing' => '12/1',
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'timestamp-request' => 13,
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'timestamp-reply' => 14,
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'address-mask-request' => 17,
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'address-mask-reply' => 18 );
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sub validate_icmp( $ ) {
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my $type = $_[0];
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my $value = $icmp_types{$type};
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return $value if defined $value;
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if ( $type =~ /^(\d+)(\/(\d+))?$/ ) {
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return $type if $1 < 256 && ( ! $2 || $3 < 256 );
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}
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fatal_error "Invalid ICMP Type ($type)"
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}
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#
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# Handle parsing of PROTO, DEST PORT(S) , SOURCE PORTS(S). Returns the appropriate match string.
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#
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@ -1210,7 +1077,7 @@ sub do_proto( $$$ )
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if ( $proto =~ /^(ipp2p(:(tcp|udp|all))?)$/i ) {
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my $p = $2 ? lc $3 : 'tcp';
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require_capability( 'IPP2P_MATCH' , "PROTO = $proto" , 's' );
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$proto = "-p $nametoproto{$p} ";
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$proto = '-p ' . proto_name($p) . ' ';
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$ports = 'ipp2p' unless $ports;
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$output .= "${proto}-m ipp2p --$ports ";
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} else {
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@ -24,7 +24,7 @@
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#
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package Shorewall::IPAddrs;
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require Exporter;
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use Shorewall::Config;
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use Shorewall::Config qw( :DEFAULT :internal );
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use strict;
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@ -41,6 +41,12 @@ our @EXPORT = qw( ALLIPv4
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ip_range_explicit
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allipv4
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rfc1918_neworks
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resolve_proto
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proto_name
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validate_port
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validate_portpair
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validate_port_list
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validate_icmp
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);
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our @EXPORT_OK = qw( );
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our $VERSION = 4.0.5;
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@ -187,4 +193,135 @@ sub rfc1918_networks() {
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@rfc1918_networks
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}
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#
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# Resolve the contents of the PROTO column.
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#
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our %nametoproto = ( all => 0, ALL => 0, icmp => 1, ICMP => 1, tcp => 6, TCP => 6, udp => 17, UDP => 17 );
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our @prototoname = ( 'all', 'icmp', '', '', '', '', 'tcp', '', '', '', '', '', '', '', '', '', '', 'udp' );
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#
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# Returns the protocol number if the passed argument is a valid protocol number or name. Returns undef otherwise
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#
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sub resolve_proto( $ ) {
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my $proto = $_[0];
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my $number;
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$proto =~ /^(\d+)$/ ? $proto <= 65535 ? $proto : undef : defined( $number = $nametoproto{$proto} ) ? $number : scalar getprotobyname $proto;
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}
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sub proto_name( $ ) {
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my $proto = $_[0];
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$proto =~ /^(\d+)$/ ? $prototoname[ $proto ] || scalar getprotobynumber $proto : $proto
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}
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sub validate_port( $$ ) {
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my ($proto, $port) = @_;
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my $value;
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if ( $port =~ /^(\d+)$/ ) {
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return $port if $port <= 65535;
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} else {
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$proto = getprotobyname $proto if $proto =~ /^(\d+)$/;
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$value = getservbyname( $port, $proto );
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}
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fatal_error "Invalid/Unknown $proto port/service ($port)" unless defined $value;
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$value;
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}
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sub validate_portpair( $$ ) {
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my ($proto, $portpair) = @_;
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fatal_error "Invalid port range ($portpair)" if $portpair =~ tr/:/:/ > 1;
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$portpair = "0$portpair" if substr( $portpair, 0, 1 ) eq ':';
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$portpair = "${portpair}65535" if substr( $portpair, -1, 1 ) eq ':';
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my @ports = split /:/, $portpair, 2;
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$_ = validate_port( $proto, $_) for ( @ports );
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if ( @ports == 2 ) {
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fatal_error "Invalid port range ($portpair)" unless $ports[0] < $ports[1];
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}
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join ':', @ports;
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}
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sub validate_port_list( $$ ) {
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my $result = '';
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my ( $proto, $list ) = @_;
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my @list = split_list( $list, 'port' );
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if ( @list > 1 && $list =~ /:/ ) {
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require_capability( 'XMULTIPORT' , 'Port ranges in a port list', '' );
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}
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$proto = proto_name $proto;
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for ( @list ) {
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my $value = validate_portpair( $proto , $_ );
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$result = $result ? join ',', $result, $value : $value;
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}
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$result;
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}
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my %icmp_types = ( any => 'any',
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'echo-reply' => 0,
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'destination-unreachable' => 3,
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'network-unreachable' => '3/0',
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'host-unreachable' => '3/1',
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'protocol-unreachable' => '3/2',
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'port-unreachable' => '3/3',
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'fragmentation-needed' => '3/4',
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'source-route-failed' => '3/5',
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'network-unknown' => '3/6',
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'host-unknown' => '3/7',
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'network-prohibited' => '3/9',
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'host-prohibited' => '3/10',
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'TOS-network-unreachable' => '3/11',
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'TOS-host-unreachable' => '3/12',
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'communication-prohibited' => '3/13',
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'host-precedence-violation' => '3/14',
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'precedence-cutoff' => '3/15',
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'source-quench' => 4,
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'redirect' => 5,
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'network-redirect' => '5/0',
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'host-redirect' => '5/1',
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'TOS-network-redirect' => '5/2',
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'TOS-host-redirect' => '5/3',
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'echo-request' => '8',
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'router-advertisement' => 9,
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'router-solicitation' => 10,
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'time-exceeded' => 11,
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'ttl-zero-during-transit' => '11/0',
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'ttl-zero-during-reassembly' => '11/1',
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'parameter-problem' => 12,
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'ip-header-bad' => '12/0',
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'required-option-missing' => '12/1',
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'timestamp-request' => 13,
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'timestamp-reply' => 14,
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'address-mask-request' => 17,
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'address-mask-reply' => 18 );
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sub validate_icmp( $ ) {
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my $type = $_[0];
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my $value = $icmp_types{$type};
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return $value if defined $value;
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if ( $type =~ /^(\d+)(\/(\d+))?$/ ) {
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return $type if $1 < 256 && ( ! $2 || $3 < 256 );
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}
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fatal_error "Invalid ICMP Type ($type)"
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}
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1;
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