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! Copyright (C) 2007 Doug Coleman.
! See http://factorcode.org/license.txt for BSD license.
USING: alien alien.c-types alien.syntax byte-arrays io
io.sockets kernel structs math math.parser
prettyprint sequences ;
IN: io.sockets.headers
C-STRUCT: etherneth
{ { "char" 6 } "dmac" }
{ { "char" 6 } "smac" }
{ "ushort" "type" } ;
: >mac-address ( byte-array -- string )
6 memory>byte-array
[ >hex 2 48 pad-left ] { } map-as ":" join ;
: etherneth. ( etherneth -- )
[ etherneth-dmac "Dest MAC: " write >mac-address . ] keep
[ etherneth-smac "Source MAC: " write >mac-address . ] keep
[ etherneth-type "Type : " write .h ] keep
drop ;
C-STRUCT: iph
{ "uchar" "hl|v" } ! hl is 4 bits, v is 4 bits
{ "uchar" "tos" }
{ "short" "len" }
{ "short" "id" }
{ "short" "off" }
{ "uchar" "ttl" }
{ "uchar" "p" }
{ "ushort" "ip_sum" }
{ "uint" "ip_src" }
{ "uint" "ip_dst" } ;
: iph-hl ( iph -- n )
iph-hl|v -4 shift ;
: iph-v ( iph -- n )
iph-hl|v 0x0f bitand ;
: set-iph-hl ( n iph -- )
[ iph-hl|v 0x0f bitand >r 4 shift r> bitor ] keep
set-iph-hl|v ;
: set-iph-v ( n iph -- )
[ iph-hl|v 0xf0 bitand bitor ] keep
set-iph-hl|v ;
C-STRUCT: icmph
{ "uchar" "type" }
{ "uchar" "code" }
{ "short" "chksum" }
{ "ushort" "id" }
{ "ushort" "seq" } ;
C-STRUCT: udph
{ "ushort" "sport" }
{ "ushort" "dport" }
{ "ushort" "len" }
{ "ushort" "check" } ;
C-STRUCT: tcph
{ "ushort" "sport" }
{ "ushort" "dport" }
{ "uint" "seq" }
{ "uint" "ack" }
{ "uchar" "x2|off" }
{ "uchar" "flags" }
{ "ushort" "win" }
{ "ushort" "sum" }
{ "ushort" "urp" } ;
: tcph-x2 ( iph -- n )
tcph-x2|off -4 shift ;
: tcph-off ( iph -- n )
tcph-x2|off 0x0f bitand ;
: set-tcph-x2 ( n iph -- )
[ tcph-x2|off 0x0f bitand >r 4 shift r> bitor ] keep
set-tcph-x2|off ;
: set-tcph-off ( n iph -- )
[ tcph-x2|off 0x0f bitand bitor ] keep
set-tcph-x2|off ;
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