-! 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 ;
-