forked from extern/shorewall_code
Create a Perl-style switch statement to handle irregular entries in
the tcrules file. Signed-off-by: Tom Eastep <teastep@shorewall.net>
This commit is contained in:
Tom Eastep
parent
b1272e8835
commit
e2f4af6e48
@ -263,6 +263,152 @@ sub process_tc_rule( ) {
|
||||
my $device = '';
|
||||
my $fw = firewall_zone;
|
||||
my $list;
|
||||
my $restriction = 0;
|
||||
my $cmd;
|
||||
my $rest;
|
||||
|
||||
my %processtcc = ( sticky => sub() {
|
||||
if ( $chain eq 'tcout' ) {
|
||||
$target = 'sticko';
|
||||
} else {
|
||||
fatal_error "SAME rules are only allowed in the PREROUTING and OUTPUT chains" if $chain ne 'tcpre';
|
||||
}
|
||||
|
||||
$restriction = DESTIFACE_DISALLOW;
|
||||
|
||||
ensure_mangle_chain($target);
|
||||
|
||||
$sticky++;
|
||||
},
|
||||
IPMARK => sub() {
|
||||
my ( $srcdst, $mask1, $mask2, $shift ) = ('src', 255, 0, 0 );
|
||||
|
||||
require_capability 'IPMARK_TARGET', 'IPMARK', 's';
|
||||
|
||||
if ( $cmd =~ /^IPMARK\((.+?)\)$/ ) {
|
||||
my $params = $1;
|
||||
my $val;
|
||||
|
||||
my ( $sd, $m1, $m2, $s , $bad ) = split ',', $params;
|
||||
|
||||
fatal_error "Invalid IPMARK parameters ($params)" if $bad;
|
||||
fatal_error "Invalid IPMARK parameter ($sd)" unless ( $sd eq 'src' || $sd eq 'dst' );
|
||||
$srcdst = $sd;
|
||||
|
||||
if ( supplied $m1 ) {
|
||||
$val = numeric_value ($m1);
|
||||
fatal_error "Invalid Mask ($m1)" unless defined $val && $val && $val <= 0xffffffff;
|
||||
$mask1 = in_hex ( $val & 0xffffffff );
|
||||
}
|
||||
|
||||
if ( supplied $m2 ) {
|
||||
$val = numeric_value ($m2);
|
||||
fatal_error "Invalid Mask ($m2)" unless defined $val && $val <= 0xffffffff;
|
||||
$mask2 = in_hex ( $val & 0xffffffff );
|
||||
}
|
||||
|
||||
if ( defined $s ) {
|
||||
$val = numeric_value ($s);
|
||||
fatal_error "Invalid Shift Bits ($s)" unless defined $val && $val >= 0 && $val < 128;
|
||||
$shift = $s;
|
||||
}
|
||||
} else {
|
||||
fatal_error "Invalid MARK/CLASSIFY ($cmd)" unless $cmd eq 'IPMARK';
|
||||
}
|
||||
|
||||
$target = "IPMARK --addr $srcdst --and-mask $mask1 --or-mask $mask2 --shift $shift";
|
||||
},
|
||||
TPROXY => sub() {
|
||||
require_capability( 'TPROXY_TARGET', 'Use of TPROXY', 's');
|
||||
|
||||
fatal_error "Invalid TPROXY specification( $cmd/$rest )" if $rest;
|
||||
|
||||
$chain = 'tcpre';
|
||||
|
||||
$cmd =~ /TPROXY\((.+?)\)$/;
|
||||
|
||||
my $params = $1;
|
||||
|
||||
fatal_error "Invalid TPROXY specification( $cmd )" unless defined $params;
|
||||
|
||||
( $mark, my $port, my $ip, my $bad ) = split ',', $params;
|
||||
|
||||
fatal_error "Invalid TPROXY specification( $cmd )" if defined $bad;
|
||||
|
||||
if ( $port ) {
|
||||
$port = validate_port( 'tcp', $port );
|
||||
} else {
|
||||
$port = 0;
|
||||
}
|
||||
|
||||
$target .= " --on-port $port";
|
||||
|
||||
if ( supplied $ip ) {
|
||||
if ( $family == F_IPV6 ) {
|
||||
$ip = $1 if $ip =~ /^\[(.+)\]$/ || $ip =~ /^<(.+)>$/;
|
||||
}
|
||||
|
||||
validate_address $ip, 1;
|
||||
$target .= " --on-ip $ip";
|
||||
}
|
||||
|
||||
$target .= ' --tproxy-mark';
|
||||
},
|
||||
TTL => sub() {
|
||||
fatal_error "TTL is not supported in IPv6 - use HL instead" if $family == F_IPV6;
|
||||
fatal_error "Invalid TTL specification( $cmd/$rest )" if $rest;
|
||||
fatal_error "Chain designator $designator not allowed with TTL" if $designator && ! ( $designator eq 'F' );
|
||||
|
||||
$chain = 'tcfor';
|
||||
|
||||
$cmd =~ /^TTL\(([-+]?\d+)\)$/;
|
||||
|
||||
my $param = $1;
|
||||
|
||||
fatal_error "Invalid TTL specification( $cmd )" unless $param && ( $param = abs $param ) < 256;
|
||||
|
||||
if ( $1 =~ /^\+/ ) {
|
||||
$target .= " --ttl-inc $param";
|
||||
} elsif ( $1 =~ /\-/ ) {
|
||||
$target .= " --ttl-dec $param";
|
||||
} else {
|
||||
$target .= " --ttl-set $param";
|
||||
}
|
||||
},
|
||||
HL => sub() {
|
||||
fatal_error "HL is not supported in IPv4 - use TTL instead" if $family == F_IPV4;
|
||||
fatal_error "Invalid HL specification( $cmd/$rest )" if $rest;
|
||||
fatal_error "Chain designator $designator not allowed with HL" if $designator && ! ( $designator eq 'F' );
|
||||
|
||||
$chain = 'tcfor';
|
||||
|
||||
$cmd =~ /^HL\(([-+]?\d+)\)$/;
|
||||
|
||||
my $param = $1;
|
||||
|
||||
fatal_error "Invalid HL specification( $cmd )" unless $param && ( $param = abs $param ) < 256;
|
||||
|
||||
if ( $1 =~ /^\+/ ) {
|
||||
$target .= " --hl-inc $param";
|
||||
} elsif ( $1 =~ /\-/ ) {
|
||||
$target .= " --hl-dec $param";
|
||||
} else {
|
||||
$target .= " --hl-set $param";
|
||||
}
|
||||
},
|
||||
IMQ => sub() {
|
||||
assert( $cmd =~ /^IMQ\((\d+)\)$/ );
|
||||
require_capability 'IMQ_TARGET', 'IMQ', 's';
|
||||
$target .= " --todev $1";
|
||||
},
|
||||
DSCP => sub() {
|
||||
assert( $cmd =~ /^DSCP\((\w+)\)$/ );
|
||||
my $dscp = numeric_value( $1);
|
||||
$dscp = $dscpmap{$1} unless defined $dscp;
|
||||
fatal_error( "Invalid DSCP ($1)" ) unless defined $dscp && $dscp < 0x2f && ! ( $dscp & 1 );
|
||||
$target .= ' --set-dscp ' . in_hex( $dscp );
|
||||
}
|
||||
);
|
||||
|
||||
if ( $source ) {
|
||||
if ( $source eq $fw ) {
|
||||
@ -336,12 +482,10 @@ sub process_tc_rule( ) {
|
||||
}
|
||||
}
|
||||
|
||||
my ($cmd, $rest) = split( '/', $mark, 2 );
|
||||
($cmd, $rest) = split( '/', $mark, 2 );
|
||||
|
||||
$list = '';
|
||||
|
||||
my $restriction = 0;
|
||||
|
||||
unless ( $classid ) {
|
||||
MARK:
|
||||
{
|
||||
@ -360,141 +504,9 @@ sub process_tc_rule( ) {
|
||||
$mark =~ s/^[|&]//;
|
||||
}
|
||||
|
||||
if ( $target eq 'sticky' ) {
|
||||
if ( $chain eq 'tcout' ) {
|
||||
$target = 'sticko';
|
||||
} else {
|
||||
fatal_error "SAME rules are only allowed in the PREROUTING and OUTPUT chains" if $chain ne 'tcpre';
|
||||
}
|
||||
my $f = $processtcc{$target};
|
||||
|
||||
$restriction = DESTIFACE_DISALLOW;
|
||||
|
||||
ensure_mangle_chain($target);
|
||||
|
||||
$sticky++;
|
||||
} elsif ( $target eq 'IPMARK' ) {
|
||||
my ( $srcdst, $mask1, $mask2, $shift ) = ('src', 255, 0, 0 );
|
||||
|
||||
require_capability 'IPMARK_TARGET', 'IPMARK', 's';
|
||||
|
||||
if ( $cmd =~ /^IPMARK\((.+?)\)$/ ) {
|
||||
my $params = $1;
|
||||
my $val;
|
||||
|
||||
my ( $sd, $m1, $m2, $s , $bad ) = split ',', $params;
|
||||
|
||||
fatal_error "Invalid IPMARK parameters ($params)" if $bad;
|
||||
fatal_error "Invalid IPMARK parameter ($sd)" unless ( $sd eq 'src' || $sd eq 'dst' );
|
||||
$srcdst = $sd;
|
||||
|
||||
if ( supplied $m1 ) {
|
||||
$val = numeric_value ($m1);
|
||||
fatal_error "Invalid Mask ($m1)" unless defined $val && $val && $val <= 0xffffffff;
|
||||
$mask1 = in_hex ( $val & 0xffffffff );
|
||||
}
|
||||
|
||||
if ( supplied $m2 ) {
|
||||
$val = numeric_value ($m2);
|
||||
fatal_error "Invalid Mask ($m2)" unless defined $val && $val <= 0xffffffff;
|
||||
$mask2 = in_hex ( $val & 0xffffffff );
|
||||
}
|
||||
|
||||
if ( defined $s ) {
|
||||
$val = numeric_value ($s);
|
||||
fatal_error "Invalid Shift Bits ($s)" unless defined $val && $val >= 0 && $val < 128;
|
||||
$shift = $s;
|
||||
}
|
||||
} else {
|
||||
fatal_error "Invalid MARK/CLASSIFY ($cmd)" unless $cmd eq 'IPMARK';
|
||||
}
|
||||
|
||||
$target = "IPMARK --addr $srcdst --and-mask $mask1 --or-mask $mask2 --shift $shift";
|
||||
} elsif ( $target eq 'TPROXY' ) {
|
||||
require_capability( 'TPROXY_TARGET', 'Use of TPROXY', 's');
|
||||
|
||||
fatal_error "Invalid TPROXY specification( $cmd/$rest )" if $rest;
|
||||
|
||||
$chain = 'tcpre';
|
||||
|
||||
$cmd =~ /TPROXY\((.+?)\)$/;
|
||||
|
||||
my $params = $1;
|
||||
|
||||
fatal_error "Invalid TPROXY specification( $cmd )" unless defined $params;
|
||||
|
||||
( $mark, my $port, my $ip, my $bad ) = split ',', $params;
|
||||
|
||||
fatal_error "Invalid TPROXY specification( $cmd )" if defined $bad;
|
||||
|
||||
if ( $port ) {
|
||||
$port = validate_port( 'tcp', $port );
|
||||
} else {
|
||||
$port = 0;
|
||||
}
|
||||
|
||||
$target .= " --on-port $port";
|
||||
|
||||
if ( supplied $ip ) {
|
||||
if ( $family == F_IPV6 ) {
|
||||
$ip = $1 if $ip =~ /^\[(.+)\]$/ || $ip =~ /^<(.+)>$/;
|
||||
}
|
||||
|
||||
validate_address $ip, 1;
|
||||
$target .= " --on-ip $ip";
|
||||
}
|
||||
|
||||
$target .= ' --tproxy-mark';
|
||||
} elsif ( $target eq 'TTL' ) {
|
||||
fatal_error "TTL is not supported in IPv6 - use HL instead" if $family == F_IPV6;
|
||||
fatal_error "Invalid TTL specification( $cmd/$rest )" if $rest;
|
||||
fatal_error "Chain designator $designator not allowed with TTL" if $designator && ! ( $designator eq 'F' );
|
||||
|
||||
$chain = 'tcfor';
|
||||
|
||||
$cmd =~ /^TTL\(([-+]?\d+)\)$/;
|
||||
|
||||
my $param = $1;
|
||||
|
||||
fatal_error "Invalid TTL specification( $cmd )" unless $param && ( $param = abs $param ) < 256;
|
||||
|
||||
if ( $1 =~ /^\+/ ) {
|
||||
$target .= " --ttl-inc $param";
|
||||
} elsif ( $1 =~ /\-/ ) {
|
||||
$target .= " --ttl-dec $param";
|
||||
} else {
|
||||
$target .= " --ttl-set $param";
|
||||
}
|
||||
} elsif ( $target eq 'HL' ) {
|
||||
fatal_error "HL is not supported in IPv4 - use TTL instead" if $family == F_IPV4;
|
||||
fatal_error "Invalid HL specification( $cmd/$rest )" if $rest;
|
||||
fatal_error "Chain designator $designator not allowed with HL" if $designator && ! ( $designator eq 'F' );
|
||||
|
||||
$chain = 'tcfor';
|
||||
|
||||
$cmd =~ /^HL\(([-+]?\d+)\)$/;
|
||||
|
||||
my $param = $1;
|
||||
|
||||
fatal_error "Invalid HL specification( $cmd )" unless $param && ( $param = abs $param ) < 256;
|
||||
|
||||
if ( $1 =~ /^\+/ ) {
|
||||
$target .= " --hl-inc $param";
|
||||
} elsif ( $1 =~ /\-/ ) {
|
||||
$target .= " --hl-dec $param";
|
||||
} else {
|
||||
$target .= " --hl-set $param";
|
||||
}
|
||||
} elsif ( $target eq 'IMQ' ) {
|
||||
assert( $cmd =~ /^IMQ\((\d+)\)$/ );
|
||||
require_capability 'IMQ_TARGET', 'IMQ', 's';
|
||||
$target .= " --todev $1";
|
||||
} elsif ( $target eq 'DSCP' ) {
|
||||
assert( $cmd =~ /^DSCP\((\w+)\)$/ );
|
||||
my $dscp = numeric_value( $1);
|
||||
$dscp = $dscpmap{$1} unless defined $dscp;
|
||||
fatal_error( "Invalid DSCP ($1)" ) unless defined $dscp && $dscp < 0x2f && ! ( $dscp & 1 );
|
||||
$target .= ' --set-dscp ' . in_hex( $dscp );
|
||||
}
|
||||
$f->() if $f;
|
||||
|
||||
if ( $rest ) {
|
||||
fatal_error "Invalid MARK ($originalmark)" if $marktype == NOMARK;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user