Annotation of gforth/unix/socket.fs, revision 1.44
1.1 pazsan 1: \ socket interface
2:
1.39 anton 3: \ Copyright (C) 1998,2000,2003,2005,2006,2007,2008,2009,2010 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>
1.17 pazsan 22: \c #include <unistd.h>
23: c-function gethostname gethostname a n -- n ( c-addr u -- ior )
24: \c #include <errno.h>
1.24 pazsan 25: \c #define get_errno() errno
26: c-function errno get_errno -- n ( -- value )
1.16 anton 27: \c #include <sys/types.h>
28: \c #include <sys/socket.h>
29: c-function socket socket n n n -- n ( class type proto -- fd )
1.17 pazsan 30: c-function closesocket close n -- n ( fd -- ior )
1.16 anton 31: c-function connect connect n a n -- n ( fd sock size -- err )
1.17 pazsan 32: c-function send send n a n n -- n ( socket buffer count flags -- size )
33: c-function recv recv n a n n -- n ( socket buffer count flags -- size )
1.33 pazsan 34: c-function recvfrom recvfrom n a n n a a -- n ( socket buffer count flags srcaddr addrlen -- size )
1.34 pazsan 35: c-function sendto sendto n a n n a n -- 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 )
1.35 pazsan 49: \c #include <poll.h>
50: c-function poll poll a n n -- n ( fds nfds timeout -- r )
1.42 pazsan 51: environment os-type s" linux" string-prefix? [IF]
52: c-function ppoll ppoll a n a a -- n ( fds nfds timeout_ts sigmask -- r )
53: [THEN]
1.36 pazsan 54: \c #include <netdb.h>
55: c-function getaddrinfo getaddrinfo a a a a -- n ( node service hints res -- r )
56: c-function freeaddrinfo freeaddrinfo a -- void ( res -- )
57: c-function gai_strerror gai_strerror n -- a ( errcode -- addr )
1.41 pazsan 58: c-function setsockopt setsockopt n n n a n -- n ( sockfd level optname optval optlen -- r )
1.20 anton 59: end-c-library
1.4 pazsan 60:
61: 4 4 2Constant int%
1.8 pazsan 62: 2 2 2Constant short%
1.37 pazsan 63: int% 2Constant size_t%
1.1 pazsan 64:
65: struct
66: cell% field h_name
67: cell% field h_aliases
1.4 pazsan 68: int% field h_addrtype
69: int% field h_length
1.1 pazsan 70: cell% field h_addr_list
71: end-struct hostent
72:
73: struct
1.8 pazsan 74: short% field family
75: short% field port
1.4 pazsan 76: int% field sin_addr
1.42 pazsan 77: int% 2* field padding
1.41 pazsan 78: end-struct sockaddr_in4
79:
80: struct
81: short% field sin6_family
82: short% field sin6_port
83: int% field sin6_flowinfo
84: int% 4 * field sin6_addr
85: int% field sin6_scope_id
86: end-struct sockaddr_in6
87:
88: sockaddr_in4 %alignment sockaddr_in6 %alignment max
89: sockaddr_in4 %size sockaddr_in6 %size max 2Constant sockaddr_in
1.1 pazsan 90:
1.35 pazsan 91: struct
92: int% field fd
93: short% field events
94: short% field revents
95: end-struct pollfd
96:
1.36 pazsan 97: struct
98: int% field ai_flags
99: int% field ai_family
100: int% field ai_socktype
101: int% field ai_protocol
102: size_t% field ai_addrlen
1.42 pazsan 103: environment os-type s" darwin" string-prefix? [IF]
104: cell% field ai_canonname
105: cell% field ai_addr
106: [ELSE]
1.36 pazsan 107: cell% field ai_addr
108: cell% field ai_canonname
1.42 pazsan 109: [THEN]
1.36 pazsan 110: cell% field ai_next
111: end-struct addrinfo
112:
1.12 anton 113: ' family alias family+port \ 0.6.2 32-bit field; used by itools
114:
1.1 pazsan 115: Create sockaddr-tmp
116: sockaddr-tmp sockaddr_in %size dup allot erase
1.38 pazsan 117: Create hints
118: hints addrinfo %size dup allot erase
119: Variable addrres
1.41 pazsan 120: Variable sockopt-on
1.1 pazsan 121:
122: : c-string ( addr u -- addr' )
123: tuck pad swap move pad + 0 swap c! pad ;
124:
1.38 pazsan 125: 0 Constant PF_UNSPEC
1.17 pazsan 126: 2 Constant PF_INET
1.42 pazsan 127: environment os-type s" darwin" string-prefix? [IF]
128: 30 Constant PF_INET6
129: $0210 Constant AF_INET
130: $1E1C Constant AF_INET6
131: 27 Constant IPV6_V6ONLY
132: 35 Constant EWOULDBLOCK
133: $40 Constant MSG_WAITALL
134: $006 Constant O_NONBLOCK|O_RDWR
135: [ELSE]
1.41 pazsan 136: 10 Constant PF_INET6
1.42 pazsan 137: 2 Constant AF_INET
138: 10 Constant AF_INET6
139: 26 Constant IPV6_V6ONLY
140: 11 Constant EWOULDBLOCK
141: $100 Constant MSG_WAITALL
142: $802 Constant O_NONBLOCK|O_RDWR
143: [THEN]
1.17 pazsan 144: 1 Constant SOCK_STREAM
1.33 pazsan 145: 2 Constant SOCK_DGRAM
1.44 ! pazsan 146: 0 Constant IPPROTO_IP
1.41 pazsan 147: 41 Constant IPPROTO_IPV6
1.44 ! pazsan 148: 10 Constant IP_MTU_DISCOVER
! 149: 23 Constant IPV6_MTU_DISCOVER
1.17 pazsan 150: 4 Constant F_SETFL
1.35 pazsan 151: $001 Constant POLLIN
152: $002 Constant POLLPRI
153: $004 Constant POLLOUT
154:
1.30 anton 155: 2variable socket-timeout-d 2000. socket-timeout-d 2!
1.1 pazsan 156:
1.8 pazsan 157: : new-socket ( -- socket )
1.33 pazsan 158: PF_INET SOCK_STREAM 0 socket
159: dup 0<= abort" no free socket" ;
160:
1.41 pazsan 161: : new-socket6 ( -- socket )
162: PF_INET6 SOCK_STREAM 0 socket
163: dup 0<= abort" no free socket"
164: dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
165:
1.33 pazsan 166: : new-udp-socket ( -- socket )
167: PF_INET SOCK_DGRAM 0 socket
1.44 ! pazsan 168: dup 0<= abort" no free socket"
! 169: dup IPPROTO_IP IP_MTU_DISCOVER sockopt-on 1 over l! 4 setsockopt drop ;
1.8 pazsan 170:
1.41 pazsan 171: : new-udp-socket6 ( -- socket )
172: PF_INET6 SOCK_DGRAM 0 socket
173: dup 0<= abort" no free socket"
1.44 ! pazsan 174: dup IPPROTO_IPV6 IPV6_MTU_DISCOVER sockopt-on 1 over l! 4 setsockopt drop
1.41 pazsan 175: dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
1.33 pazsan 176:
1.38 pazsan 177: \ getaddrinfo based open-socket
178:
179: : >hints ( socktype -- )
180: hints addrinfo %size erase
181: PF_UNSPEC hints ai_family l!
182: hints ai_socktype l! ;
183:
184: : get-info ( addr u port -- info )
185: base @ >r decimal 0 <<# 0 hold #s #> r> base ! drop
186: >r c-string r> hints addrres getaddrinfo #>>
187: ?dup IF
188: gai_strerror cstring>sstring type
189: true abort" getaddrinfo failed" THEN
190: addrres @ ;
191:
192: : get-socket ( info -- socket ) dup >r >r
193: BEGIN r@ WHILE
194: r@ ai_family l@ r@ ai_socktype l@ r@ ai_protocol l@ socket
195: dup 0>= IF
1.43 pazsan 196: dup r@ ai_addr @ r@ ai_addrlen l@ connect
1.38 pazsan 197: IF
198: closesocket drop
199: ELSE
200: s" w+" c-string fdopen
201: rdrop r> freeaddrinfo EXIT
202: THEN
203: ELSE drop THEN
204: r> ai_next @ >r REPEAT
205: rdrop r> freeaddrinfo true abort" can't connect" ;
206:
207: : open-socket ( addr u port -- fid )
208: SOCK_STREAM >hints get-info get-socket ;
209:
210: : open-udp-socket ( addr u port -- fid )
211: SOCK_DGRAM >hints get-info get-socket ;
212:
1.18 pazsan 213: : create-server ( port# -- lsocket )
1.33 pazsan 214: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 215: AF_INET sockaddr-tmp family w!
1.33 pazsan 216: htons sockaddr-tmp port w!
217: new-socket
218: dup 0< abort" no free socket" >r
1.41 pazsan 219: r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
220: r> drop true abort" bind :: failed" ;
221:
222: : create-server6 ( port# -- lsocket )
223: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 224: AF_INET6 sockaddr-tmp family w!
1.41 pazsan 225: htons sockaddr-tmp port w!
226: new-socket6
227: dup 0< abort" no free socket" >r
228: r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
1.33 pazsan 229: r> drop true abort" bind :: failed" ;
230:
231: : create-udp-server ( port# -- lsocket )
232: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 233: AF_INET sockaddr-tmp family w!
1.33 pazsan 234: htons sockaddr-tmp port w!
235: new-udp-socket
1.18 pazsan 236: dup 0< abort" no free socket" >r
1.41 pazsan 237: r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
238: r> drop true abort" bind :: failed" ;
239:
240: : create-udp-server6 ( port# -- lsocket )
241: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 242: AF_INET6 sockaddr-tmp family w!
1.41 pazsan 243: htons sockaddr-tmp port w!
244: new-udp-socket6
245: dup 0< abort" no free socket" >r
246: r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
1.18 pazsan 247: r> drop true abort" bind :: failed" ;
248:
1.17 pazsan 249: \ from itools.frt
250:
1.18 pazsan 251: ' open-socket Alias open-service
252:
1.17 pazsan 253: : $put ( c-addr1 u1 c-addr2 -- ) swap cmove ;
254:
255: : $+ ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
256: { c-addr1 u1 c-addr2 u2 }
257: u1 u2 + allocate throw
258: c-addr1 u1 2 pick $put
259: c-addr2 u2 2 pick u1 + $put
260: u1 u2 + ;
261:
1.19 pazsan 262: Create hostname$ 0 c, 255 chars allot
1.18 pazsan 263: Create alen 16 ,
264: Create crlf 2 c, 13 c, 10 c,
265:
266: : listen ( lsocket /queue -- )
267: listen() 0< abort" listen :: failed" ;
1.17 pazsan 268:
1.18 pazsan 269: \ This call blocks the server until a client appears. The client uses socket to
270: \ converse with the server.
271: : accept-socket ( lsocket -- socket )
272: 16 alen !
273: sockaddr-tmp alen accept()
274: dup 0< IF errno cr ." accept() :: error #" .
275: abort" accept :: failed"
276: ENDIF s" w+" c-string fdopen ;
1.17 pazsan 277:
278: : +cr ( c-addr1 u1 -- c-addr2 u2 ) crlf count $+ ;
279:
280: : blocking-mode ( socket flag -- ) >r fileno
281: f_setfl r> IF 0
282: ELSE o_nonblock|o_rdwr
283: THEN
284: fcntl 0< abort" blocking-mode failed" ;
285:
1.19 pazsan 286: : hostname ( -- c-addr u )
287: hostname$ c@ 0= IF
288: hostname$ 1+ 255 gethostname drop
289: hostname$ 1+ 255 0 scan nip 255 swap - hostname$ c!
290: THEN
291: hostname$ count ;
1.30 anton 292: : set-socket-timeout ( u -- ) 200 + s>d socket-timeout-d 2! ;
293: : get-socket-timeout ( -- u ) socket-timeout-d 2@ drop 200 - ;
1.17 pazsan 294: : write-socket ( c-addr size socket -- ) fileno -rot 0 send 0< throw ;
295: : close-socket ( socket -- ) fileno closesocket drop ;
296:
297: : (rs) ( socket c-addr maxlen -- c-addr size )
298: 2 pick >r r@ false blocking-mode rot fileno -rot
299: over >r msg_waitall recv
300: dup 0< IF 0 max
301: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
302: THEN
303: r> swap
304: r> true blocking-mode ;
305:
306: : read-socket ( socket c-addr maxlen -- c-addr u )
1.30 anton 307: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
1.17 pazsan 308: BEGIN
309: socket c-addr maxlen (rs) dup 0=
1.30 anton 310: utime tmax d< and
1.17 pazsan 311: WHILE
312: 2drop
313: REPEAT ;
1.33 pazsan 314:
315: : (rs-from) ( socket c-addr maxlen -- c-addr size )
316: 2 pick >r r@ false blocking-mode rot fileno -rot
317: over >r msg_waitall sockaddr-tmp alen recvfrom
318: dup 0< IF 0 max
319: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
320: THEN
321: r> swap
322: r> true blocking-mode ;
323:
324: : read-socket-from ( socket c-addr maxlen -- c-addr u )
325: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
326: BEGIN
327: socket c-addr maxlen (rs-from) dup 0=
328: utime tmax d< and
329: WHILE
330: 2drop
331: REPEAT ;
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