Annotation of gforth/unix/socket.fs, revision 1.50
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:
1.49 pazsan 61: environment os-type s" darwin" string-prefix? [IF] : darwin ; [THEN]
62:
1.4 pazsan 63: 4 4 2Constant int%
1.8 pazsan 64: 2 2 2Constant short%
1.37 pazsan 65: int% 2Constant size_t%
1.1 pazsan 66:
67: struct
68: cell% field h_name
69: cell% field h_aliases
1.4 pazsan 70: int% field h_addrtype
71: int% field h_length
1.1 pazsan 72: cell% field h_addr_list
73: end-struct hostent
74:
75: struct
1.8 pazsan 76: short% field family
77: short% field port
1.4 pazsan 78: int% field sin_addr
1.42 pazsan 79: int% 2* field padding
1.41 pazsan 80: end-struct sockaddr_in4
81:
82: struct
83: short% field sin6_family
84: short% field sin6_port
85: int% field sin6_flowinfo
86: int% 4 * field sin6_addr
87: int% field sin6_scope_id
88: end-struct sockaddr_in6
89:
90: sockaddr_in4 %alignment sockaddr_in6 %alignment max
91: sockaddr_in4 %size sockaddr_in6 %size max 2Constant sockaddr_in
1.1 pazsan 92:
1.35 pazsan 93: struct
94: int% field fd
95: short% field events
96: short% field revents
97: end-struct pollfd
98:
1.36 pazsan 99: struct
100: int% field ai_flags
101: int% field ai_family
102: int% field ai_socktype
103: int% field ai_protocol
104: size_t% field ai_addrlen
1.49 pazsan 105: [IFDEF] darwin
1.42 pazsan 106: cell% field ai_canonname
107: cell% field ai_addr
108: [ELSE]
1.36 pazsan 109: cell% field ai_addr
110: cell% field ai_canonname
1.42 pazsan 111: [THEN]
1.36 pazsan 112: cell% field ai_next
113: end-struct addrinfo
114:
1.12 anton 115: ' family alias family+port \ 0.6.2 32-bit field; used by itools
116:
1.1 pazsan 117: Create sockaddr-tmp
118: sockaddr-tmp sockaddr_in %size dup allot erase
1.38 pazsan 119: Create hints
120: hints addrinfo %size dup allot erase
121: Variable addrres
1.41 pazsan 122: Variable sockopt-on
1.1 pazsan 123:
124: : c-string ( addr u -- addr' )
125: tuck pad swap move pad + 0 swap c! pad ;
126:
1.38 pazsan 127: 0 Constant PF_UNSPEC
1.17 pazsan 128: 2 Constant PF_INET
1.46 pazsan 129: [IFDEF] darwin
1.42 pazsan 130: 30 Constant PF_INET6
131: $0210 Constant AF_INET
132: $1E1C Constant AF_INET6
133: 27 Constant IPV6_V6ONLY
134: 35 Constant EWOULDBLOCK
135: $40 Constant MSG_WAITALL
136: $006 Constant O_NONBLOCK|O_RDWR
137: [ELSE]
1.41 pazsan 138: 10 Constant PF_INET6
1.42 pazsan 139: 2 Constant AF_INET
140: 10 Constant AF_INET6
141: 26 Constant IPV6_V6ONLY
142: 11 Constant EWOULDBLOCK
143: $100 Constant MSG_WAITALL
144: $802 Constant O_NONBLOCK|O_RDWR
145: [THEN]
1.17 pazsan 146: 1 Constant SOCK_STREAM
1.33 pazsan 147: 2 Constant SOCK_DGRAM
1.44 pazsan 148: 0 Constant IPPROTO_IP
1.41 pazsan 149: 41 Constant IPPROTO_IPV6
1.44 pazsan 150: 10 Constant IP_MTU_DISCOVER
151: 23 Constant IPV6_MTU_DISCOVER
1.47 pazsan 152: 67 Constant IP_DONTFRAG
1.45 pazsan 153: 2 Constant IP_PMTUDISC_DO
1.17 pazsan 154: 4 Constant F_SETFL
1.35 pazsan 155: $001 Constant POLLIN
156: $002 Constant POLLPRI
157: $004 Constant POLLOUT
158:
1.30 anton 159: 2variable socket-timeout-d 2000. socket-timeout-d 2!
1.1 pazsan 160:
1.8 pazsan 161: : new-socket ( -- socket )
1.33 pazsan 162: PF_INET SOCK_STREAM 0 socket
163: dup 0<= abort" no free socket" ;
164:
1.41 pazsan 165: : new-socket6 ( -- socket )
166: PF_INET6 SOCK_STREAM 0 socket
167: dup 0<= abort" no free socket"
168: dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
169:
1.33 pazsan 170: : new-udp-socket ( -- socket )
171: PF_INET SOCK_DGRAM 0 socket
1.44 pazsan 172: dup 0<= abort" no free socket"
1.47 pazsan 173: [IFDEF] darwin
1.48 pazsan 174: \ dup IPPROTO_IP IP_DONTFRAG sockopt-on 1 over l! 4
175: \ setsockopt drop
1.47 pazsan 176: [ELSE]
1.46 pazsan 177: dup IPPROTO_IP IP_MTU_DISCOVER sockopt-on IP_PMTUDISC_DO over l! 4
1.48 pazsan 178: setsockopt drop
179: [THEN] ;
1.8 pazsan 180:
1.41 pazsan 181: : new-udp-socket6 ( -- socket )
182: PF_INET6 SOCK_DGRAM 0 socket
183: dup 0<= abort" no free socket"
1.47 pazsan 184: [IFDEF] darwin
1.48 pazsan 185: \ dup IPPROTO_IP IP_DONTFRAG sockopt-on 1 over l! 4
186: \ setsockopt drop
1.47 pazsan 187: [ELSE]
1.46 pazsan 188: dup IPPROTO_IPV6 IPV6_MTU_DISCOVER sockopt-on IP_PMTUDISC_DO over l! 4
1.48 pazsan 189: setsockopt drop
1.47 pazsan 190: [THEN]
1.41 pazsan 191: dup IPPROTO_IPV6 IPV6_V6ONLY sockopt-on dup on 4 setsockopt drop ;
1.33 pazsan 192:
1.38 pazsan 193: \ getaddrinfo based open-socket
194:
195: : >hints ( socktype -- )
196: hints addrinfo %size erase
197: PF_UNSPEC hints ai_family l!
198: hints ai_socktype l! ;
199:
200: : get-info ( addr u port -- info )
201: base @ >r decimal 0 <<# 0 hold #s #> r> base ! drop
202: >r c-string r> hints addrres getaddrinfo #>>
203: ?dup IF
204: gai_strerror cstring>sstring type
205: true abort" getaddrinfo failed" THEN
206: addrres @ ;
207:
208: : get-socket ( info -- socket ) dup >r >r
209: BEGIN r@ WHILE
210: r@ ai_family l@ r@ ai_socktype l@ r@ ai_protocol l@ socket
211: dup 0>= IF
1.43 pazsan 212: dup r@ ai_addr @ r@ ai_addrlen l@ connect
1.38 pazsan 213: IF
214: closesocket drop
215: ELSE
216: s" w+" c-string fdopen
217: rdrop r> freeaddrinfo EXIT
218: THEN
219: ELSE drop THEN
220: r> ai_next @ >r REPEAT
221: rdrop r> freeaddrinfo true abort" can't connect" ;
222:
223: : open-socket ( addr u port -- fid )
224: SOCK_STREAM >hints get-info get-socket ;
225:
226: : open-udp-socket ( addr u port -- fid )
227: SOCK_DGRAM >hints get-info get-socket ;
228:
1.18 pazsan 229: : create-server ( port# -- lsocket )
1.33 pazsan 230: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 231: AF_INET sockaddr-tmp family w!
1.33 pazsan 232: htons sockaddr-tmp port w!
233: new-socket
234: dup 0< abort" no free socket" >r
1.41 pazsan 235: r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
236: r> drop true abort" bind :: failed" ;
237:
238: : create-server6 ( port# -- lsocket )
239: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 240: AF_INET6 sockaddr-tmp family w!
1.41 pazsan 241: htons sockaddr-tmp port w!
242: new-socket6
243: dup 0< abort" no free socket" >r
244: r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
1.33 pazsan 245: r> drop true abort" bind :: failed" ;
246:
247: : create-udp-server ( port# -- lsocket )
248: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 249: AF_INET sockaddr-tmp family w!
1.33 pazsan 250: htons sockaddr-tmp port w!
251: new-udp-socket
1.18 pazsan 252: dup 0< abort" no free socket" >r
1.41 pazsan 253: r@ sockaddr-tmp sockaddr_in4 %size bind 0= IF r> exit ENDIF
254: r> drop true abort" bind :: failed" ;
255:
256: : create-udp-server6 ( port# -- lsocket )
257: sockaddr-tmp sockaddr_in %size erase
1.42 pazsan 258: AF_INET6 sockaddr-tmp family w!
1.41 pazsan 259: htons sockaddr-tmp port w!
260: new-udp-socket6
261: dup 0< abort" no free socket" >r
262: r@ sockaddr-tmp sockaddr_in6 %size bind 0= IF r> exit ENDIF
1.18 pazsan 263: r> drop true abort" bind :: failed" ;
264:
1.17 pazsan 265: \ from itools.frt
266:
1.18 pazsan 267: ' open-socket Alias open-service
268:
1.17 pazsan 269: : $put ( c-addr1 u1 c-addr2 -- ) swap cmove ;
270:
271: : $+ ( c-addr1 u1 c-addr2 u2 -- c-addr3 u3 )
272: { c-addr1 u1 c-addr2 u2 }
273: u1 u2 + allocate throw
274: c-addr1 u1 2 pick $put
275: c-addr2 u2 2 pick u1 + $put
276: u1 u2 + ;
277:
1.19 pazsan 278: Create hostname$ 0 c, 255 chars allot
1.18 pazsan 279: Create alen 16 ,
280: Create crlf 2 c, 13 c, 10 c,
281:
282: : listen ( lsocket /queue -- )
283: listen() 0< abort" listen :: failed" ;
1.17 pazsan 284:
1.18 pazsan 285: \ This call blocks the server until a client appears. The client uses socket to
286: \ converse with the server.
287: : accept-socket ( lsocket -- socket )
288: 16 alen !
289: sockaddr-tmp alen accept()
290: dup 0< IF errno cr ." accept() :: error #" .
291: abort" accept :: failed"
292: ENDIF s" w+" c-string fdopen ;
1.17 pazsan 293:
294: : +cr ( c-addr1 u1 -- c-addr2 u2 ) crlf count $+ ;
295:
296: : blocking-mode ( socket flag -- ) >r fileno
297: f_setfl r> IF 0
298: ELSE o_nonblock|o_rdwr
299: THEN
300: fcntl 0< abort" blocking-mode failed" ;
301:
1.19 pazsan 302: : hostname ( -- c-addr u )
303: hostname$ c@ 0= IF
304: hostname$ 1+ 255 gethostname drop
305: hostname$ 1+ 255 0 scan nip 255 swap - hostname$ c!
306: THEN
307: hostname$ count ;
1.30 anton 308: : set-socket-timeout ( u -- ) 200 + s>d socket-timeout-d 2! ;
309: : get-socket-timeout ( -- u ) socket-timeout-d 2@ drop 200 - ;
1.17 pazsan 310: : write-socket ( c-addr size socket -- ) fileno -rot 0 send 0< throw ;
311: : close-socket ( socket -- ) fileno closesocket drop ;
312:
313: : (rs) ( socket c-addr maxlen -- c-addr size )
314: 2 pick >r r@ false blocking-mode rot fileno -rot
315: over >r msg_waitall recv
316: dup 0< IF 0 max
317: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
318: THEN
319: r> swap
320: r> true blocking-mode ;
321:
322: : read-socket ( socket c-addr maxlen -- c-addr u )
1.30 anton 323: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
1.17 pazsan 324: BEGIN
325: socket c-addr maxlen (rs) dup 0=
1.30 anton 326: utime tmax d< and
1.17 pazsan 327: WHILE
328: 2drop
329: REPEAT ;
1.33 pazsan 330:
331: : (rs-from) ( socket c-addr maxlen -- c-addr size )
332: 2 pick >r r@ false blocking-mode rot fileno -rot
333: over >r msg_waitall sockaddr-tmp alen recvfrom
334: dup 0< IF 0 max
335: errno dup 0<> swap ewouldblock <> and abort" (rs) :: socket read error"
336: THEN
337: r> swap
338: r> true blocking-mode ;
339:
340: : read-socket-from ( socket c-addr maxlen -- c-addr u )
341: utime socket-timeout-d 2@ d+ { socket c-addr maxlen d: tmax -- c-addr size }
342: BEGIN
343: socket c-addr maxlen (rs-from) dup 0=
344: utime tmax d< and
345: WHILE
346: 2drop
347: REPEAT ;
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