Annotation of gforth/unix/socket.fs, revision 1.34
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 )
1.34 ! pazsan 36: c-function sendto sendto n a n n a n -- n ( socket buffer count flags srcaddr addrlen -- size )
1.25 pazsan 37: c-function listen() listen n n -- n ( socket backlog -- err )
1.28 anton 38: c-function bind bind n a n -- n ( socket sockaddr socklen --- err )
1.18 pazsan 39: c-function accept() accept n a a -- n ( socket sockaddr addrlen -- fd )
1.16 anton 40: \c #include <stdio.h>
41: c-function fdopen fdopen n a -- a ( fd fileattr -- file )
1.17 pazsan 42: \c #include <fcntl.h>
43: c-function fcntl fcntl n n n -- n ( fd n1 n2 -- ior )
1.16 anton 44: \c #include <arpa/inet.h>
45: c-function htonl htonl n -- n ( x -- x' )
46: c-function htons htons n -- n ( x -- x' )
47: c-function ntohl ntohl n -- n ( x -- x' )
1.23 pazsan 48: \c #define fileno1(file) fileno((FILE*)(file))
49: c-function fileno fileno1 a -- n ( file* -- fd )
1.20 anton 50: end-c-library
1.4 pazsan 51:
52: 4 4 2Constant int%
1.8 pazsan 53: 2 2 2Constant short%
1.1 pazsan 54:
55: struct
56: cell% field h_name
57: cell% field h_aliases
1.4 pazsan 58: int% field h_addrtype
59: int% field h_length
1.1 pazsan 60: cell% field h_addr_list
61: end-struct hostent
62:
63: struct
1.8 pazsan 64: short% field family
65: short% field port
1.4 pazsan 66: int% field sin_addr
1.1 pazsan 67: cell% 2* field padding
68: end-struct sockaddr_in
69:
1.12 anton 70: ' family alias family+port \ 0.6.2 32-bit field; used by itools
71:
1.1 pazsan 72: Create sockaddr-tmp
73: sockaddr-tmp sockaddr_in %size dup allot erase
74:
75: : c-string ( addr u -- addr' )
76: tuck pad swap move pad + 0 swap c! pad ;
77:
78: : host>addr ( addr u -- x )
79: \G converts a internet name into a IPv4 address
80: \G the resulting address is in network byte order
81: c-string gethostbyname dup 0= abort" address not found"
1.26 pazsan 82: [ s" os-type" environment? drop s" cygwin" str= ] [IF]
1.27 pazsan 83: &12 +
1.26 pazsan 84: [ELSE]
1.27 pazsan 85: h_addr_list
1.26 pazsan 86: [THEN]
1.31 pazsan 87: @ @ l@ ntohl ;
1.1 pazsan 88:
1.17 pazsan 89: 2 Constant PF_INET
90: 1 Constant SOCK_STREAM
1.33 pazsan 91: 2 Constant SOCK_DGRAM
92: 1 Constant IPPROTO_ICMP
1.17 pazsan 93: 6 Constant IPPROTO_TCP
1.33 pazsan 94: 17 Constant IPPROTO_UDP
1.17 pazsan 95: 4 Constant F_SETFL
96: 11 Constant EWOULDBLOCK
97: $100 Constant MSG_WAITALL
98: $802 Constant O_NONBLOCK|O_RDWR
1.30 anton 99: 2variable socket-timeout-d 2000. socket-timeout-d 2!
1.1 pazsan 100:
1.8 pazsan 101: : new-socket ( -- socket )
1.33 pazsan 102: PF_INET SOCK_STREAM 0 socket
103: dup 0<= abort" no free socket" ;
104:
105: : new-udp-socket ( -- socket )
106: PF_INET SOCK_DGRAM 0 socket
1.8 pazsan 107: dup 0<= abort" no free socket" ;
108:
109: : >inetaddr ( ip port sockaddr -- ) >r
110: r@ sockaddr_in %size erase
111: PF_INET r@ family w!
112: htons r@ port w!
113: htonl r> sin_addr l! ;
114:
1.1 pazsan 115: : open-socket ( addr u port -- fid )
1.10 pazsan 116: -rot host>addr
117: swap sockaddr-tmp >inetaddr
1.8 pazsan 118: new-socket >r
119: r@ sockaddr-tmp sockaddr_in %size connect 0< abort" can't connect"
1.1 pazsan 120: r> s" w+" c-string fdopen ;
1.17 pazsan 121:
1.33 pazsan 122: : open-udp-socket ( addr u port -- fid )
123: -rot host>addr
124: swap sockaddr-tmp >inetaddr
125: new-udp-socket >r
126: r@ sockaddr-tmp sockaddr_in %size connect 0< abort" can't connect"
127: r> s" w+" c-string fdopen ;
128:
1.18 pazsan 129: : create-server ( port# -- lsocket )
1.33 pazsan 130: sockaddr-tmp sockaddr_in %size erase
131: PF_INET sockaddr-tmp family w!
132: htons sockaddr-tmp port w!
133: new-socket
134: dup 0< abort" no free socket" >r
135: r@ sockaddr-tmp 16 bind 0= IF r> exit ENDIF
136: r> drop true abort" bind :: failed" ;
137:
138: : create-udp-server ( port# -- lsocket )
139: sockaddr-tmp sockaddr_in %size erase
140: PF_INET sockaddr-tmp family w!
141: htons sockaddr-tmp port w!
142: new-udp-socket
1.18 pazsan 143: dup 0< abort" no free socket" >r
144: r@ sockaddr-tmp 16 bind 0= IF r> exit ENDIF
145: r> drop true abort" bind :: failed" ;
146:
1.17 pazsan 147: \ from itools.frt
148:
1.18 pazsan 149: ' open-socket Alias open-service
150:
1.17 pazsan 151: : $put ( c-addr1 u1 c-addr2 -- ) swap cmove ;
152:
153: : $+ ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
154: { c-addr1 u1 c-addr2 u2 }
155: u1 u2 + allocate throw
156: c-addr1 u1 2 pick $put
157: c-addr2 u2 2 pick u1 + $put
158: u1 u2 + ;
159:
1.19 pazsan 160: Create hostname$ 0 c, 255 chars allot
1.18 pazsan 161: Create alen 16 ,
162: Create crlf 2 c, 13 c, 10 c,
163:
164: : listen ( lsocket /queue -- )
165: listen() 0< abort" listen :: failed" ;
1.17 pazsan 166:
1.18 pazsan 167: \ This call blocks the server until a client appears. The client uses socket to
168: \ converse with the server.
169: : accept-socket ( lsocket -- socket )
170: 16 alen !
171: sockaddr-tmp alen accept()
172: dup 0< IF errno cr ." accept() :: error #" .
173: abort" accept :: failed"
174: ENDIF s" w+" c-string fdopen ;
1.17 pazsan 175:
176: : +cr ( c-addr1 u1 -- c-addr2 u2 ) crlf count $+ ;
177:
178: : blocking-mode ( socket flag -- ) >r fileno
179: f_setfl r> IF 0
180: ELSE o_nonblock|o_rdwr
181: THEN
182: fcntl 0< abort" blocking-mode failed" ;
183:
1.19 pazsan 184: : hostname ( -- c-addr u )
185: hostname$ c@ 0= IF
186: hostname$ 1+ 255 gethostname drop
187: hostname$ 1+ 255 0 scan nip 255 swap - hostname$ c!
188: THEN
189: hostname$ count ;
1.30 anton 190: : set-socket-timeout ( u -- ) 200 + s>d socket-timeout-d 2! ;
191: : get-socket-timeout ( -- u ) socket-timeout-d 2@ drop 200 - ;
1.17 pazsan 192: : write-socket ( c-addr size socket -- ) fileno -rot 0 send 0< throw ;
193: : close-socket ( socket -- ) fileno closesocket drop ;
194:
195: : (rs) ( socket c-addr maxlen -- c-addr size )
196: 2 pick >r r@ false blocking-mode rot fileno -rot
197: over >r msg_waitall recv
198: dup 0< IF 0 max
199: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
200: THEN
201: r> swap
202: r> true blocking-mode ;
203:
204: : read-socket ( socket c-addr maxlen -- c-addr u )
1.30 anton 205: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
1.17 pazsan 206: BEGIN
207: socket c-addr maxlen (rs) dup 0=
1.30 anton 208: utime tmax d< and
1.17 pazsan 209: WHILE
210: 2drop
211: REPEAT ;
1.33 pazsan 212:
213: : (rs-from) ( socket c-addr maxlen -- c-addr size )
214: 2 pick >r r@ false blocking-mode rot fileno -rot
215: over >r msg_waitall sockaddr-tmp alen recvfrom
216: dup 0< IF 0 max
217: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
218: THEN
219: r> swap
220: r> true blocking-mode ;
221:
222: : read-socket-from ( socket c-addr maxlen -- c-addr u )
223: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
224: BEGIN
225: socket c-addr maxlen (rs-from) dup 0=
226: utime tmax d< and
227: WHILE
228: 2drop
229: REPEAT ;
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