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