Annotation of gforth/unix/socket.fs, revision 1.33
1.1 pazsan 1: \ socket interface
2:
1.32 anton 3: \ Copyright (C) 1998,2000,2003,2005,2006,2007,2008,2009 Free Software Foundation, Inc.
1.1 pazsan 4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
1.15 anton 9: \ as published by the Free Software Foundation, either version 3
1.1 pazsan 10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
1.15 anton 18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.1 pazsan 19:
1.20 anton 20: c-library socket
1.16 anton 21: \c #include <netdb.h>
22: c-function gethostbyname gethostbyname a -- a ( name -- hostent )
1.17 pazsan 23: \c #include <unistd.h>
24: c-function gethostname gethostname a n -- n ( c-addr u -- ior )
25: \c #include <errno.h>
1.24 pazsan 26: \c #define get_errno() errno
27: c-function errno get_errno -- n ( -- value )
1.16 anton 28: \c #include <sys/types.h>
29: \c #include <sys/socket.h>
30: c-function socket socket n n n -- n ( class type proto -- fd )
1.17 pazsan 31: c-function closesocket close n -- n ( fd -- ior )
1.16 anton 32: c-function connect connect n a n -- n ( fd sock size -- err )
1.17 pazsan 33: c-function send send n a n n -- n ( socket buffer count flags -- size )
34: c-function recv recv n a n n -- n ( socket buffer count flags -- size )
1.33 ! pazsan 35: c-function recvfrom recvfrom n a n n a a -- n ( socket buffer count flags srcaddr addrlen -- size )
1.25 pazsan 36: c-function listen() listen n n -- n ( socket backlog -- err )
1.28 anton 37: c-function bind bind n a n -- n ( socket sockaddr socklen --- err )
1.18 pazsan 38: c-function accept() accept n a a -- n ( socket sockaddr addrlen -- fd )
1.16 anton 39: \c #include <stdio.h>
40: c-function fdopen fdopen n a -- a ( fd fileattr -- file )
1.17 pazsan 41: \c #include <fcntl.h>
42: c-function fcntl fcntl n n n -- n ( fd n1 n2 -- ior )
1.16 anton 43: \c #include <arpa/inet.h>
44: c-function htonl htonl n -- n ( x -- x' )
45: c-function htons htons n -- n ( x -- x' )
46: c-function ntohl ntohl n -- n ( x -- x' )
1.23 pazsan 47: \c #define fileno1(file) fileno((FILE*)(file))
48: c-function fileno fileno1 a -- n ( file* -- fd )
1.20 anton 49: end-c-library
1.4 pazsan 50:
51: 4 4 2Constant int%
1.8 pazsan 52: 2 2 2Constant short%
1.1 pazsan 53:
54: struct
55: cell% field h_name
56: cell% field h_aliases
1.4 pazsan 57: int% field h_addrtype
58: int% field h_length
1.1 pazsan 59: cell% field h_addr_list
60: end-struct hostent
61:
62: struct
1.8 pazsan 63: short% field family
64: short% field port
1.4 pazsan 65: int% field sin_addr
1.1 pazsan 66: cell% 2* field padding
67: end-struct sockaddr_in
68:
1.12 anton 69: ' family alias family+port \ 0.6.2 32-bit field; used by itools
70:
1.1 pazsan 71: Create sockaddr-tmp
72: sockaddr-tmp sockaddr_in %size dup allot erase
73:
74: : c-string ( addr u -- addr' )
75: tuck pad swap move pad + 0 swap c! pad ;
76:
77: : host>addr ( addr u -- x )
78: \G converts a internet name into a IPv4 address
79: \G the resulting address is in network byte order
80: c-string gethostbyname dup 0= abort" address not found"
1.26 pazsan 81: [ s" os-type" environment? drop s" cygwin" str= ] [IF]
1.27 pazsan 82: &12 +
1.26 pazsan 83: [ELSE]
1.27 pazsan 84: h_addr_list
1.26 pazsan 85: [THEN]
1.31 pazsan 86: @ @ l@ ntohl ;
1.1 pazsan 87:
1.17 pazsan 88: 2 Constant PF_INET
89: 1 Constant SOCK_STREAM
1.33 ! pazsan 90: 2 Constant SOCK_DGRAM
! 91: 1 Constant IPPROTO_ICMP
1.17 pazsan 92: 6 Constant IPPROTO_TCP
1.33 ! pazsan 93: 17 Constant IPPROTO_UDP
1.17 pazsan 94: 4 Constant F_SETFL
95: 11 Constant EWOULDBLOCK
96: $100 Constant MSG_WAITALL
97: $802 Constant O_NONBLOCK|O_RDWR
1.30 anton 98: 2variable socket-timeout-d 2000. socket-timeout-d 2!
1.1 pazsan 99:
1.8 pazsan 100: : new-socket ( -- socket )
1.33 ! pazsan 101: PF_INET SOCK_STREAM 0 socket
! 102: dup 0<= abort" no free socket" ;
! 103:
! 104: : new-udp-socket ( -- socket )
! 105: PF_INET SOCK_DGRAM 0 socket
1.8 pazsan 106: dup 0<= abort" no free socket" ;
107:
108: : >inetaddr ( ip port sockaddr -- ) >r
109: r@ sockaddr_in %size erase
110: PF_INET r@ family w!
111: htons r@ port w!
112: htonl r> sin_addr l! ;
113:
1.1 pazsan 114: : open-socket ( addr u port -- fid )
1.10 pazsan 115: -rot host>addr
116: swap sockaddr-tmp >inetaddr
1.8 pazsan 117: new-socket >r
118: r@ sockaddr-tmp sockaddr_in %size connect 0< abort" can't connect"
1.1 pazsan 119: r> s" w+" c-string fdopen ;
1.17 pazsan 120:
1.33 ! pazsan 121: : open-udp-socket ( addr u port -- fid )
! 122: -rot host>addr
! 123: swap sockaddr-tmp >inetaddr
! 124: new-udp-socket >r
! 125: r@ sockaddr-tmp sockaddr_in %size connect 0< abort" can't connect"
! 126: r> s" w+" c-string fdopen ;
! 127:
1.18 pazsan 128: : create-server ( port# -- lsocket )
1.33 ! pazsan 129: sockaddr-tmp sockaddr_in %size erase
! 130: PF_INET sockaddr-tmp family w!
! 131: htons sockaddr-tmp port w!
! 132: new-socket
! 133: dup 0< abort" no free socket" >r
! 134: r@ sockaddr-tmp 16 bind 0= IF r> exit ENDIF
! 135: r> drop true abort" bind :: failed" ;
! 136:
! 137: : create-udp-server ( port# -- lsocket )
! 138: sockaddr-tmp sockaddr_in %size erase
! 139: PF_INET sockaddr-tmp family w!
! 140: htons sockaddr-tmp port w!
! 141: new-udp-socket
1.18 pazsan 142: dup 0< abort" no free socket" >r
143: r@ sockaddr-tmp 16 bind 0= IF r> exit ENDIF
144: r> drop true abort" bind :: failed" ;
145:
1.17 pazsan 146: \ from itools.frt
147:
1.18 pazsan 148: ' open-socket Alias open-service
149:
1.17 pazsan 150: : $put ( c-addr1 u1 c-addr2 -- ) swap cmove ;
151:
152: : $+ ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
153: { c-addr1 u1 c-addr2 u2 }
154: u1 u2 + allocate throw
155: c-addr1 u1 2 pick $put
156: c-addr2 u2 2 pick u1 + $put
157: u1 u2 + ;
158:
1.19 pazsan 159: Create hostname$ 0 c, 255 chars allot
1.18 pazsan 160: Create alen 16 ,
161: Create crlf 2 c, 13 c, 10 c,
162:
163: : listen ( lsocket /queue -- )
164: listen() 0< abort" listen :: failed" ;
1.17 pazsan 165:
1.18 pazsan 166: \ This call blocks the server until a client appears. The client uses socket to
167: \ converse with the server.
168: : accept-socket ( lsocket -- socket )
169: 16 alen !
170: sockaddr-tmp alen accept()
171: dup 0< IF errno cr ." accept() :: error #" .
172: abort" accept :: failed"
173: ENDIF s" w+" c-string fdopen ;
1.17 pazsan 174:
175: : +cr ( c-addr1 u1 -- c-addr2 u2 ) crlf count $+ ;
176:
177: : blocking-mode ( socket flag -- ) >r fileno
178: f_setfl r> IF 0
179: ELSE o_nonblock|o_rdwr
180: THEN
181: fcntl 0< abort" blocking-mode failed" ;
182:
1.19 pazsan 183: : hostname ( -- c-addr u )
184: hostname$ c@ 0= IF
185: hostname$ 1+ 255 gethostname drop
186: hostname$ 1+ 255 0 scan nip 255 swap - hostname$ c!
187: THEN
188: hostname$ count ;
1.30 anton 189: : set-socket-timeout ( u -- ) 200 + s>d socket-timeout-d 2! ;
190: : get-socket-timeout ( -- u ) socket-timeout-d 2@ drop 200 - ;
1.17 pazsan 191: : write-socket ( c-addr size socket -- ) fileno -rot 0 send 0< throw ;
192: : close-socket ( socket -- ) fileno closesocket drop ;
193:
194: : (rs) ( socket c-addr maxlen -- c-addr size )
195: 2 pick >r r@ false blocking-mode rot fileno -rot
196: over >r msg_waitall recv
197: dup 0< IF 0 max
198: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
199: THEN
200: r> swap
201: r> true blocking-mode ;
202:
203: : read-socket ( socket c-addr maxlen -- c-addr u )
1.30 anton 204: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
1.17 pazsan 205: BEGIN
206: socket c-addr maxlen (rs) dup 0=
1.30 anton 207: utime tmax d< and
1.17 pazsan 208: WHILE
209: 2drop
210: REPEAT ;
1.33 ! pazsan 211:
! 212: : (rs-from) ( socket c-addr maxlen -- c-addr size )
! 213: 2 pick >r r@ false blocking-mode rot fileno -rot
! 214: over >r msg_waitall sockaddr-tmp alen recvfrom
! 215: dup 0< IF 0 max
! 216: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
! 217: THEN
! 218: r> swap
! 219: r> true blocking-mode ;
! 220:
! 221: : read-socket-from ( socket c-addr maxlen -- c-addr u )
! 222: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
! 223: BEGIN
! 224: socket c-addr maxlen (rs-from) dup 0=
! 225: utime tmax d< and
! 226: WHILE
! 227: 2drop
! 228: REPEAT ;
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