Commit | Line | Data |
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e4b265d8 | 1 | /* Copyright (C) 1996,1997,1998,2000,2001 Free Software Foundation, Inc. |
86667910 JB |
2 | * |
3 | * This program is free software; you can redistribute it and/or modify | |
4 | * it under the terms of the GNU General Public License as published by | |
5 | * the Free Software Foundation; either version 2, or (at your option) | |
6 | * any later version. | |
7 | * | |
8 | * This program is distributed in the hope that it will be useful, | |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
11 | * GNU General Public License for more details. | |
12 | * | |
13 | * You should have received a copy of the GNU General Public License | |
14 | * along with this software; see the file COPYING. If not, write to | |
82892bed JB |
15 | * the Free Software Foundation, Inc., 59 Temple Place, Suite 330, |
16 | * Boston, MA 02111-1307 USA | |
86667910 JB |
17 | * |
18 | * As a special exception, the Free Software Foundation gives permission | |
19 | * for additional uses of the text contained in its release of GUILE. | |
20 | * | |
21 | * The exception is that, if you link the GUILE library with other files | |
22 | * to produce an executable, this does not by itself cause the | |
23 | * resulting executable to be covered by the GNU General Public License. | |
24 | * Your use of that executable is in no way restricted on account of | |
25 | * linking the GUILE library code into it. | |
26 | * | |
27 | * This exception does not however invalidate any other reasons why | |
28 | * the executable file might be covered by the GNU General Public License. | |
29 | * | |
30 | * This exception applies only to the code released by the | |
31 | * Free Software Foundation under the name GUILE. If you copy | |
32 | * code from other Free Software Foundation releases into a copy of | |
33 | * GUILE, as the General Public License permits, the exception does | |
34 | * not apply to the code that you add in this way. To avoid misleading | |
35 | * anyone as to the status of such modified files, you must delete | |
36 | * this exception notice from them. | |
37 | * | |
38 | * If you write modifications of your own for GUILE, it is your choice | |
39 | * whether to permit this exception to apply to your modifications. | |
82892bed | 40 | * If you do not wish that, delete this exception notice. */ |
1bbd0b84 GB |
41 | |
42 | /* Software engineering face-lift by Greg J. Badros, 11-Dec-1999, | |
43 | gjb@cs.washington.edu, http://www.cs.washington.edu/homes/gjb */ | |
44 | ||
0f2d19dd JB |
45 | \f |
46 | ||
e6e2e95a MD |
47 | #include <errno.h> |
48 | ||
a0599745 MD |
49 | #include "libguile/_scm.h" |
50 | #include "libguile/unif.h" | |
51 | #include "libguile/feature.h" | |
52 | #include "libguile/fports.h" | |
53 | #include "libguile/strings.h" | |
54 | #include "libguile/vectors.h" | |
20e6290e | 55 | |
a0599745 MD |
56 | #include "libguile/validate.h" |
57 | #include "libguile/socket.h" | |
95b88819 GH |
58 | |
59 | #ifdef HAVE_STRING_H | |
60 | #include <string.h> | |
61 | #endif | |
370312ae GH |
62 | #ifdef HAVE_UNISTD_H |
63 | #include <unistd.h> | |
64 | #endif | |
0f2d19dd JB |
65 | #include <sys/types.h> |
66 | #include <sys/socket.h> | |
1ba8c23a | 67 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
0f2d19dd | 68 | #include <sys/un.h> |
0e958795 | 69 | #endif |
0f2d19dd JB |
70 | #include <netinet/in.h> |
71 | #include <netdb.h> | |
72 | #include <arpa/inet.h> | |
73 | ||
97d0e20b GH |
74 | #if defined (HAVE_UNIX_DOMAIN_SOCKETS) && !defined (SUN_LEN) |
75 | #define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) \ | |
76 | + strlen ((ptr)->sun_path)) | |
77 | #endif | |
78 | ||
439006bf GH |
79 | /* we are not currently using socklen_t. it's not defined on all systems, |
80 | so would need to be checked by configure. in the meantime, plain | |
81 | int is the best alternative. */ | |
82 | ||
0f2d19dd JB |
83 | \f |
84 | ||
a1ec6916 | 85 | SCM_DEFINE (scm_htons, "htons", 1, 0, 0, |
1bbd0b84 | 86 | (SCM in), |
1e6808ea MG |
87 | "Return a new integer from @var{value} by converting from host\n" |
88 | "to network order. @var{value} must be within the range of a C\n" | |
89 | "unsigned short integer.") | |
1bbd0b84 | 90 | #define FUNC_NAME s_scm_htons |
5c11cc9d GH |
91 | { |
92 | unsigned short c_in; | |
93 | ||
3b3b36dd | 94 | SCM_VALIDATE_INUM_COPY (1,in,c_in); |
5c11cc9d | 95 | if (c_in != SCM_INUM (in)) |
1bbd0b84 | 96 | SCM_OUT_OF_RANGE (1,in); |
5c11cc9d GH |
97 | |
98 | return SCM_MAKINUM (htons (c_in)); | |
99 | } | |
1bbd0b84 | 100 | #undef FUNC_NAME |
5c11cc9d | 101 | |
a1ec6916 | 102 | SCM_DEFINE (scm_ntohs, "ntohs", 1, 0, 0, |
1bbd0b84 | 103 | (SCM in), |
1e6808ea MG |
104 | "Return a new integer from @var{value} by converting from\n" |
105 | "network to host order. @var{value} must be within the range of\n" | |
106 | "a C unsigned short integer.") | |
1bbd0b84 | 107 | #define FUNC_NAME s_scm_ntohs |
5c11cc9d GH |
108 | { |
109 | unsigned short c_in; | |
110 | ||
3b3b36dd | 111 | SCM_VALIDATE_INUM_COPY (1,in,c_in); |
5c11cc9d | 112 | if (c_in != SCM_INUM (in)) |
1bbd0b84 | 113 | SCM_OUT_OF_RANGE (1,in); |
5c11cc9d GH |
114 | |
115 | return SCM_MAKINUM (ntohs (c_in)); | |
116 | } | |
1bbd0b84 | 117 | #undef FUNC_NAME |
5c11cc9d | 118 | |
a1ec6916 | 119 | SCM_DEFINE (scm_htonl, "htonl", 1, 0, 0, |
1bbd0b84 | 120 | (SCM in), |
1e6808ea MG |
121 | "Return a new integer from @var{value} by converting from host\n" |
122 | "to network order. @var{value} must be within the range of a C\n" | |
123 | "unsigned long integer.") | |
1bbd0b84 | 124 | #define FUNC_NAME s_scm_htonl |
5c11cc9d | 125 | { |
e4b265d8 | 126 | unsigned long c_in = SCM_NUM2ULONG (1, in); |
5c11cc9d GH |
127 | return scm_ulong2num (htonl (c_in)); |
128 | } | |
1bbd0b84 | 129 | #undef FUNC_NAME |
5c11cc9d | 130 | |
a1ec6916 | 131 | SCM_DEFINE (scm_ntohl, "ntohl", 1, 0, 0, |
1bbd0b84 | 132 | (SCM in), |
1e6808ea MG |
133 | "Return a new integer from @var{value} by converting from\n" |
134 | "network to host order. @var{value} must be within the range of\n" | |
135 | "a C unsigned long integer.") | |
1bbd0b84 | 136 | #define FUNC_NAME s_scm_ntohl |
5c11cc9d | 137 | { |
e4b265d8 | 138 | unsigned long c_in = SCM_NUM2ULONG (1, in); |
5c11cc9d GH |
139 | return scm_ulong2num (ntohl (c_in)); |
140 | } | |
1bbd0b84 | 141 | #undef FUNC_NAME |
5c11cc9d | 142 | |
bc45012d | 143 | SCM_SYMBOL (sym_socket, "socket"); |
82ddea4e | 144 | |
439006bf | 145 | #define SCM_SOCK_FD_TO_PORT(fd) scm_fdes_to_port (fd, "r+0", sym_socket) |
1bbd0b84 | 146 | |
a1ec6916 | 147 | SCM_DEFINE (scm_socket, "socket", 3, 0, 0, |
1bbd0b84 | 148 | (SCM family, SCM style, SCM proto), |
1e6808ea MG |
149 | "Return a new socket port of the type specified by @var{family},\n" |
150 | "@var{style} and @var{protocol}. All three parameters are\n" | |
3453619b GH |
151 | "integers. Supported values for @var{family} are\n" |
152 | "@code{AF_UNIX}, @code{AF_INET} and @code{AF_INET6}.\n" | |
153 | "Typical values for @var{style} are @code{SOCK_STREAM},\n" | |
1e6808ea MG |
154 | "@code{SOCK_DGRAM} and @code{SOCK_RAW}.\n" |
155 | "\n" | |
b380b885 | 156 | "@var{protocol} can be obtained from a protocol name using\n" |
1e6808ea MG |
157 | "@code{getprotobyname}. A value of zero specifies the default\n" |
158 | "protocol, which is usually right.\n" | |
159 | "\n" | |
160 | "A single socket port cannot by used for communication until it\n" | |
161 | "has been connected to another socket.") | |
1bbd0b84 | 162 | #define FUNC_NAME s_scm_socket |
0f2d19dd | 163 | { |
370312ae | 164 | int fd; |
370312ae | 165 | |
439006bf GH |
166 | SCM_VALIDATE_INUM (1, family); |
167 | SCM_VALIDATE_INUM (2, style); | |
168 | SCM_VALIDATE_INUM (3, proto); | |
370312ae | 169 | fd = socket (SCM_INUM (family), SCM_INUM (style), SCM_INUM (proto)); |
439006bf GH |
170 | if (fd == -1) |
171 | SCM_SYSERROR; | |
172 | return SCM_SOCK_FD_TO_PORT (fd); | |
0f2d19dd | 173 | } |
1bbd0b84 | 174 | #undef FUNC_NAME |
0f2d19dd | 175 | |
0e958795 | 176 | #ifdef HAVE_SOCKETPAIR |
a1ec6916 | 177 | SCM_DEFINE (scm_socketpair, "socketpair", 3, 0, 0, |
1bbd0b84 | 178 | (SCM family, SCM style, SCM proto), |
1e6808ea MG |
179 | "Return a pair of connected (but unnamed) socket ports of the\n" |
180 | "type specified by @var{family}, @var{style} and @var{protocol}.\n" | |
181 | "Many systems support only socket pairs of the @code{AF_UNIX}\n" | |
182 | "family. Zero is likely to be the only meaningful value for\n" | |
183 | "@var{protocol}.") | |
1bbd0b84 | 184 | #define FUNC_NAME s_scm_socketpair |
0f2d19dd | 185 | { |
370312ae GH |
186 | int fam; |
187 | int fd[2]; | |
370312ae | 188 | |
3b3b36dd GB |
189 | SCM_VALIDATE_INUM (1,family); |
190 | SCM_VALIDATE_INUM (2,style); | |
191 | SCM_VALIDATE_INUM (3,proto); | |
370312ae GH |
192 | |
193 | fam = SCM_INUM (family); | |
194 | ||
370312ae | 195 | if (socketpair (fam, SCM_INUM (style), SCM_INUM (proto), fd) == -1) |
1bbd0b84 | 196 | SCM_SYSERROR; |
370312ae | 197 | |
439006bf | 198 | return scm_cons (SCM_SOCK_FD_TO_PORT (fd[0]), SCM_SOCK_FD_TO_PORT (fd[1])); |
0f2d19dd | 199 | } |
1bbd0b84 | 200 | #undef FUNC_NAME |
0e958795 | 201 | #endif |
0f2d19dd | 202 | |
a1ec6916 | 203 | SCM_DEFINE (scm_getsockopt, "getsockopt", 3, 0, 0, |
1bbd0b84 | 204 | (SCM sock, SCM level, SCM optname), |
1e6808ea MG |
205 | "Return the value of a particular socket option for the socket\n" |
206 | "port @var{socket}. @var{level} is an integer code for type of\n" | |
207 | "option being requested, e.g., @code{SOL_SOCKET} for\n" | |
208 | "socket-level options. @var{optname} is an integer code for the\n" | |
209 | "option required and should be specified using one of the\n" | |
210 | "symbols @code{SO_DEBUG}, @code{SO_REUSEADDR} etc.\n" | |
211 | "\n" | |
212 | "The returned value is typically an integer but @code{SO_LINGER}\n" | |
213 | "returns a pair of integers.") | |
1bbd0b84 | 214 | #define FUNC_NAME s_scm_getsockopt |
0f2d19dd | 215 | { |
370312ae | 216 | int fd; |
439006bf | 217 | /* size of optval is the largest supported option. */ |
370312ae GH |
218 | #ifdef HAVE_STRUCT_LINGER |
219 | char optval[sizeof (struct linger)]; | |
439006bf | 220 | int optlen = sizeof (struct linger); |
370312ae GH |
221 | #else |
222 | char optval[sizeof (scm_sizet)]; | |
439006bf | 223 | int optlen = sizeof (scm_sizet); |
370312ae GH |
224 | #endif |
225 | int ilevel; | |
226 | int ioptname; | |
0f2d19dd | 227 | |
78446828 | 228 | sock = SCM_COERCE_OUTPORT (sock); |
2cf6d014 MD |
229 | SCM_VALIDATE_OPFPORT (1, sock); |
230 | SCM_VALIDATE_INUM_COPY (2, level, ilevel); | |
231 | SCM_VALIDATE_INUM_COPY (3, optname, ioptname); | |
0f2d19dd | 232 | |
ee149d03 | 233 | fd = SCM_FPORT_FDES (sock); |
370312ae | 234 | if (getsockopt (fd, ilevel, ioptname, (void *) optval, &optlen) == -1) |
1bbd0b84 | 235 | SCM_SYSERROR; |
1cc91f1b | 236 | |
439006bf | 237 | if (ilevel == SOL_SOCKET) |
0f2d19dd | 238 | { |
439006bf GH |
239 | #ifdef SO_LINGER |
240 | if (ioptname == SO_LINGER) | |
241 | { | |
370312ae | 242 | #ifdef HAVE_STRUCT_LINGER |
439006bf GH |
243 | struct linger *ling = (struct linger *) optval; |
244 | ||
245 | return scm_cons (scm_long2num (ling->l_onoff), | |
246 | scm_long2num (ling->l_linger)); | |
370312ae | 247 | #else |
439006bf GH |
248 | return scm_cons (scm_long2num (*(int *) optval) |
249 | SCM_MAKINUM (0)); | |
0f2d19dd | 250 | #endif |
439006bf GH |
251 | } |
252 | else | |
370312ae | 253 | #endif |
439006bf | 254 | if (0 |
370312ae | 255 | #ifdef SO_SNDBUF |
439006bf | 256 | || ioptname == SO_SNDBUF |
370312ae GH |
257 | #endif |
258 | #ifdef SO_RCVBUF | |
439006bf | 259 | || ioptname == SO_RCVBUF |
370312ae | 260 | #endif |
439006bf GH |
261 | ) |
262 | { | |
263 | return scm_long2num (*(scm_sizet *) optval); | |
264 | } | |
265 | } | |
266 | return scm_long2num (*(int *) optval); | |
0f2d19dd | 267 | } |
1bbd0b84 | 268 | #undef FUNC_NAME |
0f2d19dd | 269 | |
a1ec6916 | 270 | SCM_DEFINE (scm_setsockopt, "setsockopt", 4, 0, 0, |
1bbd0b84 | 271 | (SCM sock, SCM level, SCM optname, SCM value), |
b380b885 MD |
272 | "Sets the value of a particular socket option for the socket\n" |
273 | "port @var{socket}. @var{level} is an integer code for type of option\n" | |
274 | "being set, e.g., @code{SOL_SOCKET} for socket-level options.\n" | |
275 | "@var{optname} is an\n" | |
276 | "integer code for the option to set and should be specified using one of\n" | |
277 | "the symbols @code{SO_DEBUG}, @code{SO_REUSEADDR} etc.\n" | |
278 | "@var{value} is the value to which the option should be set. For\n" | |
279 | "most options this must be an integer, but for @code{SO_LINGER} it must\n" | |
280 | "be a pair.\n\n" | |
281 | "The return value is unspecified.") | |
1bbd0b84 | 282 | #define FUNC_NAME s_scm_setsockopt |
0f2d19dd | 283 | { |
370312ae | 284 | int fd; |
439006bf GH |
285 | int optlen = -1; |
286 | /* size of optval is the largest supported option. */ | |
370312ae | 287 | #ifdef HAVE_STRUCT_LINGER |
439006bf | 288 | char optval[sizeof (struct linger)]; |
370312ae GH |
289 | #else |
290 | char optval[sizeof (scm_sizet)]; | |
291 | #endif | |
292 | int ilevel, ioptname; | |
439006bf | 293 | |
78446828 | 294 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf GH |
295 | |
296 | SCM_VALIDATE_OPFPORT (1, sock); | |
297 | SCM_VALIDATE_INUM_COPY (2, level, ilevel); | |
298 | SCM_VALIDATE_INUM_COPY (3, optname, ioptname); | |
299 | ||
ee149d03 | 300 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
301 | |
302 | if (ilevel == SOL_SOCKET) | |
370312ae | 303 | { |
439006bf GH |
304 | #ifdef SO_LINGER |
305 | if (ioptname == SO_LINGER) | |
306 | { | |
370312ae | 307 | #ifdef HAVE_STRUCT_LINGER |
439006bf GH |
308 | struct linger ling; |
309 | long lv; | |
310 | ||
311 | SCM_ASSERT (SCM_CONSP (value), value, SCM_ARG4, FUNC_NAME); | |
312 | lv = SCM_NUM2LONG (4, SCM_CAR (value)); | |
313 | ling.l_onoff = (int) lv; | |
314 | SCM_ASSERT_RANGE (SCM_ARG4, value, ling.l_onoff == lv); | |
315 | lv = SCM_NUM2LONG (4, SCM_CDR (value)); | |
316 | ling.l_linger = (int) lv; | |
317 | SCM_ASSERT_RANGE (SCM_ARG4, value, ling.l_linger == lv); | |
318 | optlen = (int) sizeof (struct linger); | |
319 | memcpy (optval, (void *) &ling, optlen); | |
370312ae | 320 | #else |
439006bf GH |
321 | int ling; |
322 | long lv; | |
323 | ||
324 | SCM_ASSERT (SCM_CONSP (value), value, SCM_ARG4, FUNC_NAME); | |
325 | /* timeout is ignored, but may as well validate it. */ | |
326 | lv = SCM_NUM2LONG (4, SCM_CDR (value)); | |
327 | ling = (int) lv; | |
328 | SCM_ASSERT_RANGE (SCM_ARG4, value, ling == lv); | |
329 | lv = SCM_NUM2LONG (4, SCM_CAR (value)); | |
330 | ling = (int) lv; | |
331 | SCM_ASSERT_RANGE (SCM_ARG4, value, ling == lv); | |
332 | optlen = (int) sizeof (int); | |
333 | (*(int *) optval) = ling; | |
334 | #endif | |
335 | } | |
336 | else | |
337 | #endif | |
338 | if (0 | |
370312ae | 339 | #ifdef SO_SNDBUF |
439006bf | 340 | || ioptname == SO_SNDBUF |
370312ae GH |
341 | #endif |
342 | #ifdef SO_RCVBUF | |
439006bf | 343 | || ioptname == SO_RCVBUF |
370312ae | 344 | #endif |
439006bf GH |
345 | ) |
346 | { | |
347 | long lv = SCM_NUM2LONG (4, value); | |
348 | ||
349 | optlen = (int) sizeof (scm_sizet); | |
350 | (*(scm_sizet *) optval) = (scm_sizet) lv; | |
351 | } | |
352 | } | |
353 | if (optlen == -1) | |
0f2d19dd | 354 | { |
439006bf GH |
355 | /* Most options take an int. */ |
356 | long lv = SCM_NUM2LONG (4, value); | |
357 | int val = (int) lv; | |
358 | ||
359 | SCM_ASSERT_RANGE (SCM_ARG4, value, val == lv); | |
370312ae | 360 | optlen = (int) sizeof (int); |
439006bf | 361 | (*(int *) optval) = val; |
0f2d19dd | 362 | } |
370312ae | 363 | if (setsockopt (fd, ilevel, ioptname, (void *) optval, optlen) == -1) |
1bbd0b84 | 364 | SCM_SYSERROR; |
370312ae | 365 | return SCM_UNSPECIFIED; |
0f2d19dd | 366 | } |
1bbd0b84 | 367 | #undef FUNC_NAME |
0f2d19dd | 368 | |
e1368a8d GH |
369 | /* flip a 128 bit IPv6 address between host and network order. */ |
370 | #ifdef WORDS_BIGENDIAN | |
371 | #define FLIP_NET_HOST_128(addr) | |
372 | #else | |
373 | #define FLIP_NET_HOST_128(addr)\ | |
374 | {\ | |
375 | int i;\ | |
376 | \ | |
377 | for (i = 0; i < 8; i++)\ | |
378 | {\ | |
379 | char c = (addr)[i];\ | |
380 | \ | |
381 | (addr)[i] = (addr)[15 - i];\ | |
382 | (addr)[15 - i] = c;\ | |
383 | }\ | |
384 | } | |
385 | #endif | |
386 | ||
a1ec6916 | 387 | SCM_DEFINE (scm_shutdown, "shutdown", 2, 0, 0, |
1bbd0b84 | 388 | (SCM sock, SCM how), |
b380b885 MD |
389 | "Sockets can be closed simply by using @code{close-port}. The\n" |
390 | "@code{shutdown} procedure allows reception or tranmission on a\n" | |
391 | "connection to be shut down individually, according to the parameter\n" | |
392 | "@var{how}:\n\n" | |
393 | "@table @asis\n" | |
394 | "@item 0\n" | |
395 | "Stop receiving data for this socket. If further data arrives, reject it.\n" | |
396 | "@item 1\n" | |
397 | "Stop trying to transmit data from this socket. Discard any\n" | |
398 | "data waiting to be sent. Stop looking for acknowledgement of\n" | |
399 | "data already sent; don't retransmit it if it is lost.\n" | |
400 | "@item 2\n" | |
401 | "Stop both reception and transmission.\n" | |
402 | "@end table\n\n" | |
403 | "The return value is unspecified.") | |
1bbd0b84 | 404 | #define FUNC_NAME s_scm_shutdown |
0f2d19dd | 405 | { |
370312ae | 406 | int fd; |
78446828 | 407 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd GB |
408 | SCM_VALIDATE_OPFPORT (1,sock); |
409 | SCM_VALIDATE_INUM (2,how); | |
1bbd0b84 | 410 | SCM_ASSERT_RANGE(2,how,0 <= SCM_INUM (how) && 2 >= SCM_INUM (how)); |
ee149d03 | 411 | fd = SCM_FPORT_FDES (sock); |
370312ae | 412 | if (shutdown (fd, SCM_INUM (how)) == -1) |
1bbd0b84 | 413 | SCM_SYSERROR; |
370312ae GH |
414 | return SCM_UNSPECIFIED; |
415 | } | |
1bbd0b84 | 416 | #undef FUNC_NAME |
0f2d19dd | 417 | |
370312ae GH |
418 | /* convert fam/address/args into a sockaddr of the appropriate type. |
419 | args is modified by removing the arguments actually used. | |
420 | which_arg and proc are used when reporting errors: | |
421 | which_arg is the position of address in the original argument list. | |
422 | proc is the name of the original procedure. | |
423 | size returns the size of the structure allocated. */ | |
424 | ||
370312ae | 425 | static struct sockaddr * |
439006bf GH |
426 | scm_fill_sockaddr (int fam, SCM address, SCM *args, int which_arg, |
427 | const char *proc, int *size) | |
3453619b | 428 | #define FUNC_NAME proc |
370312ae GH |
429 | { |
430 | switch (fam) | |
0f2d19dd | 431 | { |
370312ae GH |
432 | case AF_INET: |
433 | { | |
370312ae | 434 | struct sockaddr_in *soka; |
3453619b GH |
435 | unsigned long addr; |
436 | int port; | |
370312ae | 437 | |
3453619b GH |
438 | SCM_VALIDATE_ULONG_COPY (which_arg, address, addr); |
439 | SCM_VALIDATE_CONS (which_arg + 1, *args); | |
440 | SCM_VALIDATE_INUM_COPY (which_arg + 1, SCM_CAR (*args), port); | |
441 | *args = SCM_CDR (*args); | |
439006bf GH |
442 | soka = (struct sockaddr_in *) malloc (sizeof (struct sockaddr_in)); |
443 | if (!soka) | |
444 | scm_memory_error (proc); | |
3453619b GH |
445 | /* 4.4BSD-style interface includes sin_len member and defines SIN_LEN, |
446 | 4.3BSD does not. */ | |
447 | #ifdef SIN_LEN | |
448 | soka->sin_len = sizeof (struct sockaddr_in); | |
449 | #endif | |
370312ae | 450 | soka->sin_family = AF_INET; |
3453619b GH |
451 | soka->sin_addr.s_addr = htonl (addr); |
452 | soka->sin_port = htons (port); | |
370312ae GH |
453 | *size = sizeof (struct sockaddr_in); |
454 | return (struct sockaddr *) soka; | |
455 | } | |
3453619b GH |
456 | #ifdef AF_INET6 |
457 | case AF_INET6: | |
458 | { | |
459 | /* see RFC2553. */ | |
460 | int port; | |
461 | struct sockaddr_in6 *soka; | |
462 | unsigned long flowinfo = 0; | |
463 | unsigned long scope_id = 0; | |
464 | ||
465 | if (SCM_INUMP (address)) | |
466 | SCM_ASSERT_RANGE (which_arg, address, SCM_INUM (address) >= 0); | |
467 | else | |
468 | { | |
469 | SCM_VALIDATE_BIGINT (which_arg, address); | |
470 | SCM_ASSERT_RANGE (which_arg, address, | |
471 | !SCM_BIGSIGN (address) | |
472 | && (SCM_BITSPERDIG | |
473 | * SCM_NUMDIGS (address) <= 128)); | |
474 | } | |
475 | SCM_VALIDATE_CONS (which_arg + 1, *args); | |
476 | SCM_VALIDATE_INUM_COPY (which_arg + 1, SCM_CAR (*args), port); | |
477 | *args = SCM_CDR (*args); | |
478 | if (SCM_CONSP (*args)) | |
479 | { | |
480 | SCM_VALIDATE_ULONG_COPY (which_arg + 2, SCM_CAR (*args), flowinfo); | |
481 | *args = SCM_CDR (*args); | |
482 | if (SCM_CONSP (*args)) | |
483 | { | |
484 | SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args), | |
485 | scope_id); | |
486 | *args = SCM_CDR (*args); | |
487 | } | |
488 | } | |
489 | soka = (struct sockaddr_in6 *) malloc (sizeof (struct sockaddr_in6)); | |
490 | if (!soka) | |
491 | scm_memory_error (proc); | |
492 | #ifdef SIN_LEN6 | |
493 | soka->sin6_len = sizeof (struct sockaddr_in6); | |
494 | #endif | |
495 | soka->sin6_family = AF_INET6; | |
496 | if (SCM_INUMP (address)) | |
497 | { | |
498 | uint32_t addr = htonl (SCM_INUM (address)); | |
499 | ||
500 | memset (soka->sin6_addr.s6_addr, 0, 12); | |
501 | memcpy (soka->sin6_addr.s6_addr + 12, &addr, 4); | |
502 | } | |
503 | else | |
504 | { | |
3453619b GH |
505 | memset (soka->sin6_addr.s6_addr, 0, 16); |
506 | memcpy (soka->sin6_addr.s6_addr, SCM_BDIGITS (address), | |
507 | SCM_NUMDIGS (address) * (SCM_BITSPERDIG / 8)); | |
e1368a8d | 508 | FLIP_NET_HOST_128 (soka->sin6_addr.s6_addr); |
3453619b | 509 | } |
5a525b84 | 510 | soka->sin6_port = htons (port); |
3453619b | 511 | soka->sin6_flowinfo = flowinfo; |
5a525b84 | 512 | #ifdef HAVE_SIN6_SCOPE_ID |
3453619b | 513 | soka->sin6_scope_id = scope_id; |
5a525b84 | 514 | #endif |
3453619b GH |
515 | *size = sizeof (struct sockaddr_in6); |
516 | return (struct sockaddr *) soka; | |
517 | } | |
518 | #endif | |
1ba8c23a | 519 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
370312ae GH |
520 | case AF_UNIX: |
521 | { | |
522 | struct sockaddr_un *soka; | |
439006bf | 523 | int addr_size; |
370312ae | 524 | |
a6d9e5ab | 525 | SCM_ASSERT (SCM_STRINGP (address), address, which_arg, proc); |
439006bf GH |
526 | /* the static buffer size in sockaddr_un seems to be arbitrary |
527 | and not necessarily a hard limit. e.g., the glibc manual | |
528 | suggests it may be possible to declare it size 0. let's | |
529 | ignore it. if the O/S doesn't like the size it will cause | |
530 | connect/bind etc., to fail. sun_path is always the last | |
531 | member of the structure. */ | |
532 | addr_size = sizeof (struct sockaddr_un) | |
533 | + max (0, SCM_STRING_LENGTH (address) + 1 - (sizeof soka->sun_path)); | |
534 | soka = (struct sockaddr_un *) malloc (addr_size); | |
535 | if (!soka) | |
536 | scm_memory_error (proc); | |
537 | memset (soka, 0, addr_size); /* for sun_len: see sin_len above. */ | |
538 | soka->sun_family = AF_UNIX; | |
34f0f2b8 | 539 | memcpy (soka->sun_path, SCM_STRING_CHARS (address), |
439006bf GH |
540 | SCM_STRING_LENGTH (address)); |
541 | *size = SUN_LEN (soka); | |
370312ae GH |
542 | return (struct sockaddr *) soka; |
543 | } | |
0e958795 | 544 | #endif |
370312ae GH |
545 | default: |
546 | scm_out_of_range (proc, SCM_MAKINUM (fam)); | |
0f2d19dd | 547 | } |
0f2d19dd | 548 | } |
3453619b | 549 | #undef FUNC_NAME |
370312ae | 550 | |
a1ec6916 | 551 | SCM_DEFINE (scm_connect, "connect", 3, 0, 1, |
1bbd0b84 | 552 | (SCM sock, SCM fam, SCM address, SCM args), |
3453619b GH |
553 | "Initiates a connection from a socket using a specified address\n" |
554 | "family to the address\n" | |
555 | "specified by @var{address} and possibly @var{args}.\n" | |
556 | "The format required for @var{address}\n" | |
557 | "and @var{args} depends on the family of the socket.\n\n" | |
b380b885 | 558 | "For a socket of family @code{AF_UNIX},\n" |
3453619b | 559 | "only @var{address} is specified and must be a string with the\n" |
b380b885 MD |
560 | "filename where the socket is to be created.\n\n" |
561 | "For a socket of family @code{AF_INET},\n" | |
3453619b GH |
562 | "@var{address} must be an integer IPv4 host address and\n" |
563 | "@var{args} must be a single integer port number.\n\n" | |
564 | "For a socket of family @code{AF_INET6},\n" | |
565 | "@var{address} must be an integer IPv6 host address and\n" | |
566 | "@var{args} may be up to three integers:\n" | |
567 | "port [flowinfo] [scope_id],\n" | |
568 | "where flowinfo and scope_id default to zero.\n\n" | |
b380b885 | 569 | "The return value is unspecified.") |
1bbd0b84 | 570 | #define FUNC_NAME s_scm_connect |
0f2d19dd | 571 | { |
370312ae GH |
572 | int fd; |
573 | struct sockaddr *soka; | |
439006bf | 574 | int size; |
0f2d19dd | 575 | |
78446828 | 576 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd GB |
577 | SCM_VALIDATE_OPFPORT (1,sock); |
578 | SCM_VALIDATE_INUM (2,fam); | |
ee149d03 | 579 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
580 | soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args, 3, FUNC_NAME, |
581 | &size); | |
370312ae | 582 | if (connect (fd, soka, size) == -1) |
439006bf GH |
583 | { |
584 | int save_errno = errno; | |
585 | ||
586 | free (soka); | |
587 | errno = save_errno; | |
588 | SCM_SYSERROR; | |
589 | } | |
590 | free (soka); | |
370312ae | 591 | return SCM_UNSPECIFIED; |
0f2d19dd | 592 | } |
1bbd0b84 | 593 | #undef FUNC_NAME |
0f2d19dd | 594 | |
a1ec6916 | 595 | SCM_DEFINE (scm_bind, "bind", 3, 0, 1, |
1bbd0b84 | 596 | (SCM sock, SCM fam, SCM address, SCM args), |
b380b885 MD |
597 | "Assigns an address to the socket port @var{socket}.\n" |
598 | "Generally this only needs to be done for server sockets,\n" | |
599 | "so they know where to look for incoming connections. A socket\n" | |
600 | "without an address will be assigned one automatically when it\n" | |
601 | "starts communicating.\n\n" | |
602 | "The format of @var{address} and @var{ARG} @dots{} depends on the family\n" | |
603 | "of the socket.\n\n" | |
604 | "For a socket of family @code{AF_UNIX}, only @var{address}\n" | |
605 | "is specified and must \n" | |
606 | "be a string with the filename where the socket is to be created.\n\n" | |
607 | "For a socket of family @code{AF_INET}, @var{address} must be an integer\n" | |
608 | "Internet host address and @var{arg} @dots{} must be a single integer\n" | |
609 | "port number.\n\n" | |
610 | "The values of the following variables can also be used for @var{address}:\n\n" | |
611 | "@defvar INADDR_ANY\n" | |
612 | "Allow connections from any address.\n" | |
613 | "@end defvar\n\n" | |
614 | "@defvar INADDR_LOOPBACK\n" | |
615 | "The address of the local host using the loopback device.\n" | |
616 | "@end defvar\n\n" | |
617 | "@defvar INADDR_BROADCAST\n" | |
618 | "The broadcast address on the local network.\n" | |
619 | "@end defvar\n\n" | |
620 | "@defvar INADDR_NONE\n" | |
621 | "No address.\n" | |
622 | "@end defvar\n\n" | |
623 | "The return value is unspecified.") | |
1bbd0b84 | 624 | #define FUNC_NAME s_scm_bind |
370312ae | 625 | { |
370312ae | 626 | struct sockaddr *soka; |
439006bf | 627 | int size; |
370312ae GH |
628 | int fd; |
629 | ||
78446828 | 630 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf GH |
631 | SCM_VALIDATE_OPFPORT (1, sock); |
632 | SCM_VALIDATE_INUM (2, fam); | |
633 | soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args, 3, FUNC_NAME, | |
634 | &size); | |
ee149d03 | 635 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
636 | if (bind (fd, soka, size) == -1) |
637 | { | |
638 | int save_errno = errno; | |
639 | ||
640 | free (soka); | |
641 | errno = save_errno; | |
1bbd0b84 | 642 | SCM_SYSERROR; |
439006bf GH |
643 | } |
644 | free (soka); | |
370312ae GH |
645 | return SCM_UNSPECIFIED; |
646 | } | |
1bbd0b84 | 647 | #undef FUNC_NAME |
370312ae | 648 | |
a1ec6916 | 649 | SCM_DEFINE (scm_listen, "listen", 2, 0, 0, |
1bbd0b84 | 650 | (SCM sock, SCM backlog), |
b380b885 MD |
651 | "This procedure enables @var{socket} to accept connection\n" |
652 | "requests. @var{backlog} is an integer specifying\n" | |
653 | "the maximum length of the queue for pending connections.\n" | |
654 | "If the queue fills, new clients will fail to connect until the\n" | |
655 | "server calls @code{accept} to accept a connection from the queue.\n\n" | |
656 | "The return value is unspecified.") | |
1bbd0b84 | 657 | #define FUNC_NAME s_scm_listen |
370312ae GH |
658 | { |
659 | int fd; | |
78446828 | 660 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd GB |
661 | SCM_VALIDATE_OPFPORT (1,sock); |
662 | SCM_VALIDATE_INUM (2,backlog); | |
ee149d03 | 663 | fd = SCM_FPORT_FDES (sock); |
370312ae | 664 | if (listen (fd, SCM_INUM (backlog)) == -1) |
1bbd0b84 | 665 | SCM_SYSERROR; |
370312ae GH |
666 | return SCM_UNSPECIFIED; |
667 | } | |
1bbd0b84 | 668 | #undef FUNC_NAME |
370312ae GH |
669 | |
670 | /* Put the components of a sockaddr into a new SCM vector. */ | |
370312ae | 671 | static SCM |
e1368a8d | 672 | scm_addr_vector (const struct sockaddr *address, const char *proc) |
0f2d19dd | 673 | { |
370312ae GH |
674 | short int fam = address->sa_family; |
675 | SCM result; | |
676 | SCM *ve; | |
439006bf | 677 | |
5a525b84 | 678 | switch (fam) |
0f2d19dd | 679 | { |
5a525b84 GH |
680 | case AF_INET: |
681 | { | |
e1368a8d | 682 | const struct sockaddr_in *nad = (struct sockaddr_in *) address; |
439006bf | 683 | |
5a525b84 GH |
684 | result = scm_c_make_vector (3, SCM_UNSPECIFIED); |
685 | ve = SCM_VELTS (result); | |
686 | ve[0] = scm_ulong2num ((unsigned long) fam); | |
687 | ve[1] = scm_ulong2num (ntohl (nad->sin_addr.s_addr)); | |
688 | ve[2] = scm_ulong2num ((unsigned long) ntohs (nad->sin_port)); | |
689 | } | |
690 | break; | |
691 | #ifdef AF_INET6 | |
692 | case AF_INET6: | |
693 | { | |
e1368a8d GH |
694 | const struct sockaddr_in6 *nad = (struct sockaddr_in6 *) address; |
695 | int big_digits = 128 / SCM_BITSPERDIG; | |
696 | int bytes_per_dig = SCM_BITSPERDIG / 8; | |
697 | char addr[16]; | |
698 | char *ptr = addr; | |
699 | SCM scm_addr; | |
700 | ||
701 | memcpy (addr, nad->sin6_addr.s6_addr, 16); | |
702 | /* get rid of leading zeros. */ | |
703 | while (big_digits > 0) | |
704 | { | |
705 | long test = 0; | |
706 | ||
707 | memcpy (&test, ptr, bytes_per_dig); | |
708 | if (test != 0) | |
709 | break; | |
710 | ptr += bytes_per_dig; | |
711 | big_digits--; | |
712 | } | |
713 | FLIP_NET_HOST_128 (addr); | |
714 | if (big_digits * bytes_per_dig <= sizeof (unsigned long)) | |
715 | { | |
716 | /* this is just so that we use INUM where possible. */ | |
717 | unsigned long l_addr; | |
718 | ||
719 | memcpy (&l_addr, addr, sizeof (unsigned long)); | |
720 | scm_addr = scm_ulong2num (l_addr); | |
721 | } | |
722 | else | |
723 | { | |
724 | scm_addr = scm_mkbig (big_digits, 0); | |
725 | memcpy (SCM_BDIGITS (scm_addr), addr, big_digits * bytes_per_dig); | |
726 | } | |
5a525b84 GH |
727 | |
728 | result = scm_c_make_vector (5, SCM_UNSPECIFIED); | |
729 | ve = SCM_VELTS (result); | |
730 | ve[0] = scm_ulong2num ((unsigned long) fam); | |
e1368a8d | 731 | ve[1] = scm_addr; |
5a525b84 GH |
732 | ve[2] = scm_ulong2num ((unsigned long) ntohs (nad->sin6_port)); |
733 | ve[3] = scm_ulong2num ((unsigned long) nad->sin6_flowinfo); | |
734 | #ifdef HAVE_SIN6_SCOPE_ID | |
735 | ve[4] = scm_ulong2num ((unsigned long) nad->sin6_scope_id); | |
736 | #else | |
737 | ve[4] = SCM_INUM0; | |
0e958795 | 738 | #endif |
5a525b84 GH |
739 | } |
740 | break; | |
741 | #endif | |
742 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS | |
743 | case AF_UNIX: | |
744 | { | |
e1368a8d | 745 | const struct sockaddr_un *nad = (struct sockaddr_un *) address; |
439006bf | 746 | |
5a525b84 GH |
747 | result = scm_c_make_vector (2, SCM_UNSPECIFIED); |
748 | ve = SCM_VELTS (result); | |
749 | ve[0] = scm_ulong2num ((unsigned long) fam); | |
750 | ve[1] = scm_makfromstr (nad->sun_path, | |
751 | (scm_sizet) strlen (nad->sun_path), 0); | |
752 | } | |
753 | break; | |
754 | #endif | |
755 | default: | |
756 | scm_misc_error (proc, "Unrecognised address family: ~A", | |
757 | SCM_LIST1 (SCM_MAKINUM (fam))); | |
0f2d19dd | 758 | } |
370312ae GH |
759 | return result; |
760 | } | |
761 | ||
439006bf GH |
762 | /* calculate the size of a buffer large enough to hold any supported |
763 | sockaddr type. if the buffer isn't large enough, certain system | |
764 | calls will return a truncated address. */ | |
370312ae | 765 | |
439006bf GH |
766 | #if defined (HAVE_UNIX_DOMAIN_SOCKETS) |
767 | #define MAX_SIZE_UN sizeof (struct sockaddr_un) | |
0e958795 | 768 | #else |
439006bf | 769 | #define MAX_SIZE_UN 0 |
0e958795 | 770 | #endif |
439006bf | 771 | |
5a525b84 GH |
772 | #if defined (AF_INET6) |
773 | #define MAX_SIZE_IN6 sizeof (struct sockaddr_in6) | |
774 | #else | |
775 | #define MAX_SIZE_IN6 0 | |
776 | #endif | |
777 | ||
778 | #define MAX_ADDR_SIZE max (max (sizeof (struct sockaddr_in), MAX_SIZE_IN6),\ | |
779 | MAX_SIZE_UN) | |
0f2d19dd | 780 | |
a1ec6916 | 781 | SCM_DEFINE (scm_accept, "accept", 1, 0, 0, |
1bbd0b84 | 782 | (SCM sock), |
b380b885 MD |
783 | "Accepts a connection on a bound, listening socket @var{socket}. If there\n" |
784 | "are no pending connections in the queue, it waits until\n" | |
785 | "one is available unless the non-blocking option has been set on the\n" | |
786 | "socket.\n\n" | |
787 | "The return value is a\n" | |
788 | "pair in which the CAR is a new socket port for the connection and\n" | |
789 | "the CDR is an object with address information about the client which\n" | |
790 | "initiated the connection.\n\n" | |
791 | "If the address is not available then the CDR will be an empty vector.\n\n" | |
792 | "@var{socket} does not become part of the\n" | |
793 | "connection and will continue to accept new requests.") | |
1bbd0b84 | 794 | #define FUNC_NAME s_scm_accept |
0f2d19dd | 795 | { |
370312ae GH |
796 | int fd; |
797 | int newfd; | |
798 | SCM address; | |
799 | SCM newsock; | |
439006bf GH |
800 | int addr_size = MAX_ADDR_SIZE; |
801 | char max_addr[MAX_ADDR_SIZE]; | |
802 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
370312ae | 803 | |
78446828 | 804 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf | 805 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 806 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
807 | newfd = accept (fd, addr, &addr_size); |
808 | if (newfd == -1) | |
809 | SCM_SYSERROR; | |
810 | newsock = SCM_SOCK_FD_TO_PORT (newfd); | |
811 | if (addr_size > 0) | |
812 | address = scm_addr_vector (addr, FUNC_NAME); | |
0f2d19dd | 813 | else |
370312ae GH |
814 | address = SCM_BOOL_F; |
815 | ||
370312ae | 816 | return scm_cons (newsock, address); |
0f2d19dd | 817 | } |
1bbd0b84 | 818 | #undef FUNC_NAME |
0f2d19dd | 819 | |
a1ec6916 | 820 | SCM_DEFINE (scm_getsockname, "getsockname", 1, 0, 0, |
1bbd0b84 | 821 | (SCM sock), |
1e6808ea MG |
822 | "Return the address of @var{socket}, in the same form as the\n" |
823 | "object returned by @code{accept}. On many systems the address\n" | |
824 | "of a socket in the @code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 825 | #define FUNC_NAME s_scm_getsockname |
0f2d19dd | 826 | { |
370312ae GH |
827 | int fd; |
828 | SCM result; | |
439006bf GH |
829 | int addr_size = MAX_ADDR_SIZE; |
830 | char max_addr[MAX_ADDR_SIZE]; | |
831 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
832 | ||
78446828 | 833 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 834 | SCM_VALIDATE_OPFPORT (1,sock); |
ee149d03 | 835 | fd = SCM_FPORT_FDES (sock); |
439006bf | 836 | if (getsockname (fd, addr, &addr_size) == -1) |
1bbd0b84 | 837 | SCM_SYSERROR; |
439006bf GH |
838 | if (addr_size > 0) |
839 | result = scm_addr_vector (addr, FUNC_NAME); | |
0f2d19dd | 840 | else |
370312ae | 841 | result = SCM_BOOL_F; |
370312ae | 842 | return result; |
0f2d19dd | 843 | } |
1bbd0b84 | 844 | #undef FUNC_NAME |
0f2d19dd | 845 | |
a1ec6916 | 846 | SCM_DEFINE (scm_getpeername, "getpeername", 1, 0, 0, |
1bbd0b84 | 847 | (SCM sock), |
1e6808ea MG |
848 | "Return the address of the socket that the socket @var{socket}\n" |
849 | "is connected to, in the same form as the object returned by\n" | |
850 | "@code{accept}. On many systems the address of a socket in the\n" | |
851 | "@code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 852 | #define FUNC_NAME s_scm_getpeername |
0f2d19dd | 853 | { |
370312ae GH |
854 | int fd; |
855 | SCM result; | |
439006bf GH |
856 | int addr_size = MAX_ADDR_SIZE; |
857 | char max_addr[MAX_ADDR_SIZE]; | |
858 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
859 | ||
78446828 | 860 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 861 | SCM_VALIDATE_OPFPORT (1,sock); |
ee149d03 | 862 | fd = SCM_FPORT_FDES (sock); |
439006bf | 863 | if (getpeername (fd, addr, &addr_size) == -1) |
1bbd0b84 | 864 | SCM_SYSERROR; |
439006bf GH |
865 | if (addr_size > 0) |
866 | result = scm_addr_vector (addr, FUNC_NAME); | |
0f2d19dd | 867 | else |
370312ae | 868 | result = SCM_BOOL_F; |
370312ae | 869 | return result; |
0f2d19dd | 870 | } |
1bbd0b84 | 871 | #undef FUNC_NAME |
0f2d19dd | 872 | |
a1ec6916 | 873 | SCM_DEFINE (scm_recv, "recv!", 2, 1, 0, |
1bbd0b84 | 874 | (SCM sock, SCM buf, SCM flags), |
b380b885 MD |
875 | "Receives data from the socket port @var{socket}. @var{socket} must already\n" |
876 | "be bound to the address from which data is to be received.\n" | |
877 | "@var{buf} is a string into which\n" | |
878 | "the data will be written. The size of @var{buf} limits the amount of\n" | |
879 | "data which can be received: in the case of packet\n" | |
880 | "protocols, if a packet larger than this limit is encountered then some data\n" | |
881 | "will be irrevocably lost.\n\n" | |
882 | "The optional @var{flags} argument is a value or\n" | |
883 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
884 | "The value returned is the number of bytes read from the socket.\n\n" | |
09831f94 NJ |
885 | "Note that the data is read directly from the socket file descriptor:\n" |
886 | "any unread buffered port data is ignored.") | |
1bbd0b84 | 887 | #define FUNC_NAME s_scm_recv |
0f2d19dd | 888 | { |
370312ae GH |
889 | int rv; |
890 | int fd; | |
891 | int flg; | |
370312ae | 892 | |
3b3b36dd GB |
893 | SCM_VALIDATE_OPFPORT (1,sock); |
894 | SCM_VALIDATE_STRING (2,buf); | |
895 | SCM_VALIDATE_INUM_DEF_COPY (3,flags,0,flg); | |
ee149d03 | 896 | fd = SCM_FPORT_FDES (sock); |
370312ae | 897 | |
bfa974f0 | 898 | SCM_SYSCALL (rv = recv (fd, SCM_STRING_CHARS (buf), SCM_STRING_LENGTH (buf), flg)); |
370312ae | 899 | if (rv == -1) |
1bbd0b84 | 900 | SCM_SYSERROR; |
370312ae | 901 | |
1146b6cd | 902 | return SCM_MAKINUM (rv); |
370312ae | 903 | } |
1bbd0b84 | 904 | #undef FUNC_NAME |
370312ae | 905 | |
a1ec6916 | 906 | SCM_DEFINE (scm_send, "send", 2, 1, 0, |
1bbd0b84 | 907 | (SCM sock, SCM message, SCM flags), |
b380b885 MD |
908 | "Transmits the string @var{message} on the socket port @var{socket}. \n" |
909 | "@var{socket} must already be bound to a destination address. The\n" | |
910 | "value returned is the number of bytes transmitted -- it's possible for\n" | |
911 | "this to be less than the length of @var{message} if the socket is\n" | |
912 | "set to be non-blocking. The optional @var{flags} argument is a value or\n" | |
913 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
914 | "Note that the data is written directly to the socket file descriptor:\n" | |
915 | "any unflushed buffered port data is ignored.") | |
1bbd0b84 | 916 | #define FUNC_NAME s_scm_send |
370312ae GH |
917 | { |
918 | int rv; | |
919 | int fd; | |
920 | int flg; | |
921 | ||
78446828 | 922 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 923 | SCM_VALIDATE_OPFPORT (1,sock); |
a6d9e5ab | 924 | SCM_VALIDATE_STRING (2, message); |
3b3b36dd | 925 | SCM_VALIDATE_INUM_DEF_COPY (3,flags,0,flg); |
ee149d03 | 926 | fd = SCM_FPORT_FDES (sock); |
370312ae | 927 | |
34f0f2b8 | 928 | SCM_SYSCALL (rv = send (fd, SCM_STRING_CHARS (message), SCM_STRING_LENGTH (message), flg)); |
370312ae | 929 | if (rv == -1) |
1bbd0b84 | 930 | SCM_SYSERROR; |
370312ae GH |
931 | return SCM_MAKINUM (rv); |
932 | } | |
1bbd0b84 | 933 | #undef FUNC_NAME |
370312ae | 934 | |
a1ec6916 | 935 | SCM_DEFINE (scm_recvfrom, "recvfrom!", 2, 3, 0, |
60d02d09 | 936 | (SCM sock, SCM str, SCM flags, SCM start, SCM end), |
1e6808ea MG |
937 | "Return data from the socket port @var{socket} and also\n" |
938 | "information about where the data was received from.\n" | |
939 | "@var{socket} must already be bound to the address from which\n" | |
940 | "data is to be received. @code{str}, is a string into which the\n" | |
941 | "data will be written. The size of @var{str} limits the amount\n" | |
942 | "of data which can be received: in the case of packet protocols,\n" | |
943 | "if a packet larger than this limit is encountered then some\n" | |
944 | "data will be irrevocably lost.\n" | |
945 | "\n" | |
946 | "The optional @var{flags} argument is a value or bitwise OR of\n" | |
947 | "@code{MSG_OOB}, @code{MSG_PEEK}, @code{MSG_DONTROUTE} etc.\n" | |
948 | "\n" | |
949 | "The value returned is a pair: the @emph{car} is the number of\n" | |
950 | "bytes read from the socket and the @emph{cdr} an address object\n" | |
951 | "in the same form as returned by @code{accept}.\n" | |
952 | "\n" | |
953 | "The @var{start} and @var{end} arguments specify a substring of\n" | |
954 | "@var{str} to which the data should be written.\n" | |
955 | "\n" | |
956 | "Note that the data is read directly from the socket file\n" | |
957 | "descriptor: any unread buffered port data is ignored.") | |
1bbd0b84 | 958 | #define FUNC_NAME s_scm_recvfrom |
370312ae GH |
959 | { |
960 | int rv; | |
961 | int fd; | |
962 | int flg; | |
60d02d09 GH |
963 | char *buf; |
964 | int offset; | |
1146b6cd | 965 | int cend; |
370312ae | 966 | SCM address; |
439006bf GH |
967 | int addr_size = MAX_ADDR_SIZE; |
968 | char max_addr[MAX_ADDR_SIZE]; | |
969 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
370312ae | 970 | |
3b3b36dd | 971 | SCM_VALIDATE_OPFPORT (1,sock); |
60d02d09 GH |
972 | fd = SCM_FPORT_FDES (sock); |
973 | SCM_VALIDATE_SUBSTRING_SPEC_COPY (2, str, buf, 4, start, offset, | |
974 | 5, end, cend); | |
1146b6cd GH |
975 | if (SCM_UNBNDP (flags)) |
976 | flg = 0; | |
370312ae | 977 | else |
60d02d09 | 978 | SCM_VALIDATE_ULONG_COPY (3, flags, flg); |
370312ae | 979 | |
97d0e20b GH |
980 | /* recvfrom will not necessarily return an address. usually nothing |
981 | is returned for stream sockets. */ | |
439006bf | 982 | addr->sa_family = AF_UNSPEC; |
60d02d09 | 983 | SCM_SYSCALL (rv = recvfrom (fd, buf + offset, |
1146b6cd | 984 | cend - offset, flg, |
439006bf | 985 | addr, &addr_size)); |
370312ae | 986 | if (rv == -1) |
1bbd0b84 | 987 | SCM_SYSERROR; |
439006bf GH |
988 | if (addr_size > 0 && addr->sa_family != AF_UNSPEC) |
989 | address = scm_addr_vector (addr, FUNC_NAME); | |
370312ae GH |
990 | else |
991 | address = SCM_BOOL_F; | |
992 | ||
1146b6cd | 993 | return scm_cons (SCM_MAKINUM (rv), address); |
0f2d19dd | 994 | } |
1bbd0b84 | 995 | #undef FUNC_NAME |
0f2d19dd | 996 | |
a1ec6916 | 997 | SCM_DEFINE (scm_sendto, "sendto", 4, 0, 1, |
1bbd0b84 | 998 | (SCM sock, SCM message, SCM fam, SCM address, SCM args_and_flags), |
b380b885 MD |
999 | "Transmits the string @var{message} on the socket port @var{socket}. The\n" |
1000 | "destination address is specified using the @var{family}, @var{address} and\n" | |
1001 | "@var{arg} arguments, in a similar way to the @code{connect}\n" | |
1002 | "procedure. The\n" | |
1003 | "value returned is the number of bytes transmitted -- it's possible for\n" | |
1004 | "this to be less than the length of @var{message} if the socket is\n" | |
1005 | "set to be non-blocking. The optional @var{flags} argument is a value or\n" | |
1006 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
1007 | "Note that the data is written directly to the socket file descriptor:\n" | |
1008 | "any unflushed buffered port data is ignored.") | |
1bbd0b84 | 1009 | #define FUNC_NAME s_scm_sendto |
370312ae GH |
1010 | { |
1011 | int rv; | |
1012 | int fd; | |
1013 | int flg; | |
1014 | struct sockaddr *soka; | |
439006bf | 1015 | int size; |
370312ae | 1016 | |
78446828 | 1017 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 1018 | SCM_VALIDATE_FPORT (1,sock); |
a6d9e5ab | 1019 | SCM_VALIDATE_STRING (2, message); |
3b3b36dd | 1020 | SCM_VALIDATE_INUM (3,fam); |
ee149d03 | 1021 | fd = SCM_FPORT_FDES (sock); |
370312ae | 1022 | soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args_and_flags, 4, |
1bbd0b84 | 1023 | FUNC_NAME, &size); |
370312ae GH |
1024 | if (SCM_NULLP (args_and_flags)) |
1025 | flg = 0; | |
1026 | else | |
1027 | { | |
3b3b36dd | 1028 | SCM_VALIDATE_CONS (5,args_and_flags); |
e4b265d8 | 1029 | flg = SCM_NUM2ULONG (5, SCM_CAR (args_and_flags)); |
370312ae | 1030 | } |
439006bf GH |
1031 | SCM_SYSCALL (rv = sendto (fd, SCM_STRING_CHARS (message), |
1032 | SCM_STRING_LENGTH (message), | |
ae2fa5bc | 1033 | flg, soka, size)); |
370312ae | 1034 | if (rv == -1) |
439006bf GH |
1035 | { |
1036 | int save_errno = errno; | |
1037 | free (soka); | |
1038 | errno = save_errno; | |
1039 | SCM_SYSERROR; | |
1040 | } | |
1041 | free (soka); | |
370312ae GH |
1042 | return SCM_MAKINUM (rv); |
1043 | } | |
1bbd0b84 | 1044 | #undef FUNC_NAME |
370312ae GH |
1045 | \f |
1046 | ||
1047 | ||
1048 | void | |
0f2d19dd | 1049 | scm_init_socket () |
0f2d19dd | 1050 | { |
370312ae GH |
1051 | /* protocol families. */ |
1052 | #ifdef AF_UNSPEC | |
1053 | scm_sysintern ("AF_UNSPEC", SCM_MAKINUM (AF_UNSPEC)); | |
1054 | #endif | |
1055 | #ifdef AF_UNIX | |
1056 | scm_sysintern ("AF_UNIX", SCM_MAKINUM (AF_UNIX)); | |
1057 | #endif | |
1058 | #ifdef AF_INET | |
1059 | scm_sysintern ("AF_INET", SCM_MAKINUM (AF_INET)); | |
1060 | #endif | |
3453619b GH |
1061 | #ifdef AF_INET6 |
1062 | scm_sysintern ("AF_INET6", SCM_MAKINUM (AF_INET6)); | |
1063 | #endif | |
370312ae GH |
1064 | |
1065 | #ifdef PF_UNSPEC | |
1066 | scm_sysintern ("PF_UNSPEC", SCM_MAKINUM (PF_UNSPEC)); | |
1067 | #endif | |
1068 | #ifdef PF_UNIX | |
1069 | scm_sysintern ("PF_UNIX", SCM_MAKINUM (PF_UNIX)); | |
1070 | #endif | |
1071 | #ifdef PF_INET | |
1072 | scm_sysintern ("PF_INET", SCM_MAKINUM (PF_INET)); | |
1073 | #endif | |
3453619b GH |
1074 | #ifdef PF_INET6 |
1075 | scm_sysintern ("PF_INET6", SCM_MAKINUM (PF_INET6)); | |
1076 | #endif | |
370312ae GH |
1077 | |
1078 | /* socket types. */ | |
1079 | #ifdef SOCK_STREAM | |
1080 | scm_sysintern ("SOCK_STREAM", SCM_MAKINUM (SOCK_STREAM)); | |
1081 | #endif | |
1082 | #ifdef SOCK_DGRAM | |
1083 | scm_sysintern ("SOCK_DGRAM", SCM_MAKINUM (SOCK_DGRAM)); | |
1084 | #endif | |
1085 | #ifdef SOCK_RAW | |
1086 | scm_sysintern ("SOCK_RAW", SCM_MAKINUM (SOCK_RAW)); | |
1087 | #endif | |
1088 | ||
1089 | /* setsockopt level. */ | |
1090 | #ifdef SOL_SOCKET | |
1091 | scm_sysintern ("SOL_SOCKET", SCM_MAKINUM (SOL_SOCKET)); | |
1092 | #endif | |
1093 | #ifdef SOL_IP | |
1094 | scm_sysintern ("SOL_IP", SCM_MAKINUM (SOL_IP)); | |
1095 | #endif | |
1096 | #ifdef SOL_TCP | |
1097 | scm_sysintern ("SOL_TCP", SCM_MAKINUM (SOL_TCP)); | |
1098 | #endif | |
1099 | #ifdef SOL_UDP | |
1100 | scm_sysintern ("SOL_UDP", SCM_MAKINUM (SOL_UDP)); | |
1101 | #endif | |
1102 | ||
1103 | /* setsockopt names. */ | |
1104 | #ifdef SO_DEBUG | |
1105 | scm_sysintern ("SO_DEBUG", SCM_MAKINUM (SO_DEBUG)); | |
1106 | #endif | |
1107 | #ifdef SO_REUSEADDR | |
1108 | scm_sysintern ("SO_REUSEADDR", SCM_MAKINUM (SO_REUSEADDR)); | |
1109 | #endif | |
1110 | #ifdef SO_STYLE | |
1111 | scm_sysintern ("SO_STYLE", SCM_MAKINUM (SO_STYLE)); | |
1112 | #endif | |
1113 | #ifdef SO_TYPE | |
1114 | scm_sysintern ("SO_TYPE", SCM_MAKINUM (SO_TYPE)); | |
1115 | #endif | |
1116 | #ifdef SO_ERROR | |
1117 | scm_sysintern ("SO_ERROR", SCM_MAKINUM (SO_ERROR)); | |
1118 | #endif | |
1119 | #ifdef SO_DONTROUTE | |
1120 | scm_sysintern ("SO_DONTROUTE", SCM_MAKINUM (SO_DONTROUTE)); | |
1121 | #endif | |
1122 | #ifdef SO_BROADCAST | |
1123 | scm_sysintern ("SO_BROADCAST", SCM_MAKINUM (SO_BROADCAST)); | |
1124 | #endif | |
1125 | #ifdef SO_SNDBUF | |
1126 | scm_sysintern ("SO_SNDBUF", SCM_MAKINUM (SO_SNDBUF)); | |
1127 | #endif | |
1128 | #ifdef SO_RCVBUF | |
1129 | scm_sysintern ("SO_RCVBUF", SCM_MAKINUM (SO_RCVBUF)); | |
1130 | #endif | |
1131 | #ifdef SO_KEEPALIVE | |
1132 | scm_sysintern ("SO_KEEPALIVE", SCM_MAKINUM (SO_KEEPALIVE)); | |
1133 | #endif | |
1134 | #ifdef SO_OOBINLINE | |
1135 | scm_sysintern ("SO_OOBINLINE", SCM_MAKINUM (SO_OOBINLINE)); | |
1136 | #endif | |
1137 | #ifdef SO_NO_CHECK | |
1138 | scm_sysintern ("SO_NO_CHECK", SCM_MAKINUM (SO_NO_CHECK)); | |
1139 | #endif | |
1140 | #ifdef SO_PRIORITY | |
1141 | scm_sysintern ("SO_PRIORITY", SCM_MAKINUM (SO_PRIORITY)); | |
1142 | #endif | |
1143 | #ifdef SO_LINGER | |
1144 | scm_sysintern ("SO_LINGER", SCM_MAKINUM (SO_LINGER)); | |
1145 | #endif | |
1146 | ||
1147 | /* recv/send options. */ | |
1148 | #ifdef MSG_OOB | |
1149 | scm_sysintern ("MSG_OOB", SCM_MAKINUM (MSG_OOB)); | |
1150 | #endif | |
1151 | #ifdef MSG_PEEK | |
1152 | scm_sysintern ("MSG_PEEK", SCM_MAKINUM (MSG_PEEK)); | |
1153 | #endif | |
1154 | #ifdef MSG_DONTROUTE | |
1155 | scm_sysintern ("MSG_DONTROUTE", SCM_MAKINUM (MSG_DONTROUTE)); | |
1156 | #endif | |
1157 | ||
0f2d19dd | 1158 | scm_add_feature ("socket"); |
370312ae | 1159 | |
8dc9439f | 1160 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 1161 | #include "libguile/socket.x" |
8dc9439f | 1162 | #endif |
0f2d19dd JB |
1163 | } |
1164 | ||
89e00824 ML |
1165 | |
1166 | /* | |
1167 | Local Variables: | |
1168 | c-file-style: "gnu" | |
1169 | End: | |
1170 | */ |