#

# shiftn(num,list...)

#

# shift the list num times

#

define(`shiftn',`ifelse($1,0,`shift($*)',`shiftn(decr($1),shift(shift($*)))')')

#

# range_start(num)

#

# return the low port in a range.

#

# range_start(600) returns "600"

# range_start(1200-1600) returns "1200"

#

define(`range_start',`ifelse(-1,index(`$1', `-'),$1,substr($1,0,index(`$1', `-')))')

#

# build_option(option_name,true,[false])

#

# makes an ifdef.  hacky quoting changes because with

# regular quoting, the macros in $2 and $3 will not be expanded

#

define(`build_option',`dnl

changequote([,])dnl

[ifdef(`$1',`]

changequote(`,')dnl

$2

changequote([,])dnl

[',`]

changequote(`,')dnl

$3

changequote([,])dnl

[')]

changequote(`,')dnl

')

define(`declare_netifs',`dnl

netifcon $2 gen_context(system_u:object_r:$1,$3) gen_context(system_u:object_r:unlabeled_t,$3)

ifelse(`$4',`',`',`declare_netifs($1,shiftn(3,$*))')dnl

')

#

# network_interface(if_name,linux_interface,mls_sensitivity)

#

define(`network_interface',`

gen_require(``type unlabeled_t;'')

type $1_netif_t alias netif_$1_t, netif_type;

declare_netifs($1_netif_t,shift($*))

')

define(`network_interface_controlled',`

ifdef(`__network_enabled_declared__',`',`

## <desc>

## 

## Enable network traffic on all controlled interfaces.

## 

## </desc>

gen_bool(network_enabled, true)

define(`__network_enabled_declared__')

')

gen_require(``type unlabeled_t;'')

type $1_netif_t alias netif_$1_t, netif_type;

declare_netifs($1_netif_t,shift($*))

')

define(`declare_nodes',`dnl

nodecon $3 $4 gen_context(system_u:object_r:$1,$2)

ifelse(`$5',`',`',`declare_nodes($1,shiftn(4,$*))')dnl

')

#

# network_node(node_name,mls_sensitivity,address,netmask[, mls_sensitivity,address,netmask, [...]])

#

define(`network_node',`

type $1_node_t alias node_$1_t, node_type;

declare_nodes($1_node_t,shift($*))

')

# bindresvport in glibc starts searching for reserved ports at 512

define(`declare_ports',`dnl

ifelse(eval(range_start($3) < 1024),1,`typeattribute $1 reserved_port_type;

ifelse(eval(range_start($3) >= 512),1,`typeattribute $1 rpc_port_type;',`dnl')

',`dnl')

portcon $2 $3 gen_context(system_u:object_r:$1,$4)

ifelse(`$5',`',`',`declare_ports($1,shiftn(4,$*))')dnl

')

#

# network_port(port_name,protocol portnum mls_sensitivity [,protocol portnum mls_sensitivity[,...]])

#

define(`network_port',`

type $1_port_t, port_type;

type $1_client_packet_t, packet_type, client_packet_type;

type $1_server_packet_t, packet_type, server_packet_type;

declare_ports($1_port_t,shift($*))dnl

')

#

# network_packet(packet_name)

#

define(`network_packet',`

type $1_client_packet_t, packet_type, client_packet_type;

type $1_server_packet_t, packet_type, server_packet_type;

')