\ socket interface
\ Copyright (C) 1998,2000 Free Software Foundation, Inc.
\ This file is part of Gforth.
\ Gforth is free software; you can redistribute it and/or
\ modify it under the terms of the GNU General Public License
\ as published by the Free Software Foundation; either version 2
\ of the License, or (at your option) any later version.
\ This program is distributed in the hope that it will be useful,
\ but WITHOUT ANY WARRANTY; without even the implied warranty of
\ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
\ GNU General Public License for more details.
\ You should have received a copy of the GNU General Public License
\ along with this program; if not, write to the Free Software
\ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
[IFUNDEF] libc library libc libc.so.6 [THEN]
1 (int) libc gethostbyname gethostbyname ( name -- hostent )
3 (int) libc socket socket ( class type proto -- fd )
3 (int) libc connect connect ( fd sock size -- err )
2 (int) libc fdopen fdopen ( fd fileattr -- file )
1 (int) libc htonl htonl ( x -- x' )
cell% field h_name
cell% field h_aliases
cell% field h_addrtype
cell% field h_length
cell% field h_addr_list
cell% field family+port
cell% field sin_addr
cell% 2* field padding
sockaddr-tmp sockaddr_in %size dup allot erase
: c-string ( addr u -- addr' )
tuck pad swap move pad + 0 swap c! pad ;
: host>addr ( addr u -- x )
\G converts a internet name into a IPv4 address
\G the resulting address is in network byte order
c-string gethostbyname dup 0= abort" address not found"
h_addr_list @ @ @ ;
2 Constant PF_INET
1 Constant SOCK_STREAM
6 Constant IPPROTO_TCP
: open-socket ( addr u port -- fid )
htonl PF_INET [ base c@ 0= ] [IF] $10 lshift [THEN]
or sockaddr-tmp family+port !
host>addr sockaddr-tmp sin_addr !
PF_INET SOCK_STREAM IPPROTO_TCP socket
dup 0<= abort" no free socket" >r
r@ sockaddr-tmp $10 connect 0< abort" can't connect"
r> s" w+" c-string fdopen ;