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 | |
a1ec6916 | 369 | SCM_DEFINE (scm_shutdown, "shutdown", 2, 0, 0, |
1bbd0b84 | 370 | (SCM sock, SCM how), |
b380b885 MD |
371 | "Sockets can be closed simply by using @code{close-port}. The\n" |
372 | "@code{shutdown} procedure allows reception or tranmission on a\n" | |
373 | "connection to be shut down individually, according to the parameter\n" | |
374 | "@var{how}:\n\n" | |
375 | "@table @asis\n" | |
376 | "@item 0\n" | |
377 | "Stop receiving data for this socket. If further data arrives, reject it.\n" | |
378 | "@item 1\n" | |
379 | "Stop trying to transmit data from this socket. Discard any\n" | |
380 | "data waiting to be sent. Stop looking for acknowledgement of\n" | |
381 | "data already sent; don't retransmit it if it is lost.\n" | |
382 | "@item 2\n" | |
383 | "Stop both reception and transmission.\n" | |
384 | "@end table\n\n" | |
385 | "The return value is unspecified.") | |
1bbd0b84 | 386 | #define FUNC_NAME s_scm_shutdown |
0f2d19dd | 387 | { |
370312ae | 388 | int fd; |
78446828 | 389 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd GB |
390 | SCM_VALIDATE_OPFPORT (1,sock); |
391 | SCM_VALIDATE_INUM (2,how); | |
1bbd0b84 | 392 | SCM_ASSERT_RANGE(2,how,0 <= SCM_INUM (how) && 2 >= SCM_INUM (how)); |
ee149d03 | 393 | fd = SCM_FPORT_FDES (sock); |
370312ae | 394 | if (shutdown (fd, SCM_INUM (how)) == -1) |
1bbd0b84 | 395 | SCM_SYSERROR; |
370312ae GH |
396 | return SCM_UNSPECIFIED; |
397 | } | |
1bbd0b84 | 398 | #undef FUNC_NAME |
0f2d19dd | 399 | |
370312ae GH |
400 | /* convert fam/address/args into a sockaddr of the appropriate type. |
401 | args is modified by removing the arguments actually used. | |
402 | which_arg and proc are used when reporting errors: | |
403 | which_arg is the position of address in the original argument list. | |
404 | proc is the name of the original procedure. | |
405 | size returns the size of the structure allocated. */ | |
406 | ||
370312ae | 407 | static struct sockaddr * |
439006bf GH |
408 | scm_fill_sockaddr (int fam, SCM address, SCM *args, int which_arg, |
409 | const char *proc, int *size) | |
3453619b | 410 | #define FUNC_NAME proc |
370312ae GH |
411 | { |
412 | switch (fam) | |
0f2d19dd | 413 | { |
370312ae GH |
414 | case AF_INET: |
415 | { | |
370312ae | 416 | struct sockaddr_in *soka; |
3453619b GH |
417 | unsigned long addr; |
418 | int port; | |
370312ae | 419 | |
3453619b GH |
420 | SCM_VALIDATE_ULONG_COPY (which_arg, address, addr); |
421 | SCM_VALIDATE_CONS (which_arg + 1, *args); | |
422 | SCM_VALIDATE_INUM_COPY (which_arg + 1, SCM_CAR (*args), port); | |
423 | *args = SCM_CDR (*args); | |
439006bf GH |
424 | soka = (struct sockaddr_in *) malloc (sizeof (struct sockaddr_in)); |
425 | if (!soka) | |
426 | scm_memory_error (proc); | |
3453619b GH |
427 | /* 4.4BSD-style interface includes sin_len member and defines SIN_LEN, |
428 | 4.3BSD does not. */ | |
429 | #ifdef SIN_LEN | |
430 | soka->sin_len = sizeof (struct sockaddr_in); | |
431 | #endif | |
370312ae | 432 | soka->sin_family = AF_INET; |
3453619b GH |
433 | soka->sin_addr.s_addr = htonl (addr); |
434 | soka->sin_port = htons (port); | |
370312ae GH |
435 | *size = sizeof (struct sockaddr_in); |
436 | return (struct sockaddr *) soka; | |
437 | } | |
3453619b GH |
438 | #ifdef AF_INET6 |
439 | case AF_INET6: | |
440 | { | |
441 | /* see RFC2553. */ | |
442 | int port; | |
443 | struct sockaddr_in6 *soka; | |
444 | unsigned long flowinfo = 0; | |
445 | unsigned long scope_id = 0; | |
446 | ||
447 | if (SCM_INUMP (address)) | |
448 | SCM_ASSERT_RANGE (which_arg, address, SCM_INUM (address) >= 0); | |
449 | else | |
450 | { | |
451 | SCM_VALIDATE_BIGINT (which_arg, address); | |
452 | SCM_ASSERT_RANGE (which_arg, address, | |
453 | !SCM_BIGSIGN (address) | |
454 | && (SCM_BITSPERDIG | |
455 | * SCM_NUMDIGS (address) <= 128)); | |
456 | } | |
457 | SCM_VALIDATE_CONS (which_arg + 1, *args); | |
458 | SCM_VALIDATE_INUM_COPY (which_arg + 1, SCM_CAR (*args), port); | |
459 | *args = SCM_CDR (*args); | |
460 | if (SCM_CONSP (*args)) | |
461 | { | |
462 | SCM_VALIDATE_ULONG_COPY (which_arg + 2, SCM_CAR (*args), flowinfo); | |
463 | *args = SCM_CDR (*args); | |
464 | if (SCM_CONSP (*args)) | |
465 | { | |
466 | SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args), | |
467 | scope_id); | |
468 | *args = SCM_CDR (*args); | |
469 | } | |
470 | } | |
471 | soka = (struct sockaddr_in6 *) malloc (sizeof (struct sockaddr_in6)); | |
472 | if (!soka) | |
473 | scm_memory_error (proc); | |
474 | #ifdef SIN_LEN6 | |
475 | soka->sin6_len = sizeof (struct sockaddr_in6); | |
476 | #endif | |
477 | soka->sin6_family = AF_INET6; | |
478 | if (SCM_INUMP (address)) | |
479 | { | |
480 | uint32_t addr = htonl (SCM_INUM (address)); | |
481 | ||
482 | memset (soka->sin6_addr.s6_addr, 0, 12); | |
483 | memcpy (soka->sin6_addr.s6_addr + 12, &addr, 4); | |
484 | } | |
485 | else | |
486 | { | |
487 | scm_sizet i; | |
488 | ||
489 | memset (soka->sin6_addr.s6_addr, 0, 16); | |
490 | memcpy (soka->sin6_addr.s6_addr, SCM_BDIGITS (address), | |
491 | SCM_NUMDIGS (address) * (SCM_BITSPERDIG / 8)); | |
492 | #ifndef WORDS_BIGENDIAN | |
493 | /* flip to network order. */ | |
494 | for (i = 0; i < 8; i++) | |
495 | { | |
496 | char c = soka->sin6_addr.s6_addr[i]; | |
497 | ||
498 | soka->sin6_addr.s6_addr[i] = soka->sin6_addr.s6_addr[15 - i]; | |
499 | soka->sin6_addr.s6_addr[15 - i] = c; | |
500 | } | |
501 | #endif | |
502 | } | |
503 | soka->sin6_port = port; | |
504 | soka->sin6_flowinfo = flowinfo; | |
505 | soka->sin6_scope_id = scope_id; | |
506 | *size = sizeof (struct sockaddr_in6); | |
507 | return (struct sockaddr *) soka; | |
508 | } | |
509 | #endif | |
1ba8c23a | 510 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
370312ae GH |
511 | case AF_UNIX: |
512 | { | |
513 | struct sockaddr_un *soka; | |
439006bf | 514 | int addr_size; |
370312ae | 515 | |
a6d9e5ab | 516 | SCM_ASSERT (SCM_STRINGP (address), address, which_arg, proc); |
439006bf GH |
517 | /* the static buffer size in sockaddr_un seems to be arbitrary |
518 | and not necessarily a hard limit. e.g., the glibc manual | |
519 | suggests it may be possible to declare it size 0. let's | |
520 | ignore it. if the O/S doesn't like the size it will cause | |
521 | connect/bind etc., to fail. sun_path is always the last | |
522 | member of the structure. */ | |
523 | addr_size = sizeof (struct sockaddr_un) | |
524 | + max (0, SCM_STRING_LENGTH (address) + 1 - (sizeof soka->sun_path)); | |
525 | soka = (struct sockaddr_un *) malloc (addr_size); | |
526 | if (!soka) | |
527 | scm_memory_error (proc); | |
528 | memset (soka, 0, addr_size); /* for sun_len: see sin_len above. */ | |
529 | soka->sun_family = AF_UNIX; | |
34f0f2b8 | 530 | memcpy (soka->sun_path, SCM_STRING_CHARS (address), |
439006bf GH |
531 | SCM_STRING_LENGTH (address)); |
532 | *size = SUN_LEN (soka); | |
370312ae GH |
533 | return (struct sockaddr *) soka; |
534 | } | |
0e958795 | 535 | #endif |
370312ae GH |
536 | default: |
537 | scm_out_of_range (proc, SCM_MAKINUM (fam)); | |
0f2d19dd | 538 | } |
0f2d19dd | 539 | } |
3453619b | 540 | #undef FUNC_NAME |
370312ae | 541 | |
a1ec6916 | 542 | SCM_DEFINE (scm_connect, "connect", 3, 0, 1, |
1bbd0b84 | 543 | (SCM sock, SCM fam, SCM address, SCM args), |
3453619b GH |
544 | "Initiates a connection from a socket using a specified address\n" |
545 | "family to the address\n" | |
546 | "specified by @var{address} and possibly @var{args}.\n" | |
547 | "The format required for @var{address}\n" | |
548 | "and @var{args} depends on the family of the socket.\n\n" | |
b380b885 | 549 | "For a socket of family @code{AF_UNIX},\n" |
3453619b | 550 | "only @var{address} is specified and must be a string with the\n" |
b380b885 MD |
551 | "filename where the socket is to be created.\n\n" |
552 | "For a socket of family @code{AF_INET},\n" | |
3453619b GH |
553 | "@var{address} must be an integer IPv4 host address and\n" |
554 | "@var{args} must be a single integer port number.\n\n" | |
555 | "For a socket of family @code{AF_INET6},\n" | |
556 | "@var{address} must be an integer IPv6 host address and\n" | |
557 | "@var{args} may be up to three integers:\n" | |
558 | "port [flowinfo] [scope_id],\n" | |
559 | "where flowinfo and scope_id default to zero.\n\n" | |
b380b885 | 560 | "The return value is unspecified.") |
1bbd0b84 | 561 | #define FUNC_NAME s_scm_connect |
0f2d19dd | 562 | { |
370312ae GH |
563 | int fd; |
564 | struct sockaddr *soka; | |
439006bf | 565 | int size; |
0f2d19dd | 566 | |
78446828 | 567 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd GB |
568 | SCM_VALIDATE_OPFPORT (1,sock); |
569 | SCM_VALIDATE_INUM (2,fam); | |
ee149d03 | 570 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
571 | soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args, 3, FUNC_NAME, |
572 | &size); | |
370312ae | 573 | if (connect (fd, soka, size) == -1) |
439006bf GH |
574 | { |
575 | int save_errno = errno; | |
576 | ||
577 | free (soka); | |
578 | errno = save_errno; | |
579 | SCM_SYSERROR; | |
580 | } | |
581 | free (soka); | |
370312ae | 582 | return SCM_UNSPECIFIED; |
0f2d19dd | 583 | } |
1bbd0b84 | 584 | #undef FUNC_NAME |
0f2d19dd | 585 | |
a1ec6916 | 586 | SCM_DEFINE (scm_bind, "bind", 3, 0, 1, |
1bbd0b84 | 587 | (SCM sock, SCM fam, SCM address, SCM args), |
b380b885 MD |
588 | "Assigns an address to the socket port @var{socket}.\n" |
589 | "Generally this only needs to be done for server sockets,\n" | |
590 | "so they know where to look for incoming connections. A socket\n" | |
591 | "without an address will be assigned one automatically when it\n" | |
592 | "starts communicating.\n\n" | |
593 | "The format of @var{address} and @var{ARG} @dots{} depends on the family\n" | |
594 | "of the socket.\n\n" | |
595 | "For a socket of family @code{AF_UNIX}, only @var{address}\n" | |
596 | "is specified and must \n" | |
597 | "be a string with the filename where the socket is to be created.\n\n" | |
598 | "For a socket of family @code{AF_INET}, @var{address} must be an integer\n" | |
599 | "Internet host address and @var{arg} @dots{} must be a single integer\n" | |
600 | "port number.\n\n" | |
601 | "The values of the following variables can also be used for @var{address}:\n\n" | |
602 | "@defvar INADDR_ANY\n" | |
603 | "Allow connections from any address.\n" | |
604 | "@end defvar\n\n" | |
605 | "@defvar INADDR_LOOPBACK\n" | |
606 | "The address of the local host using the loopback device.\n" | |
607 | "@end defvar\n\n" | |
608 | "@defvar INADDR_BROADCAST\n" | |
609 | "The broadcast address on the local network.\n" | |
610 | "@end defvar\n\n" | |
611 | "@defvar INADDR_NONE\n" | |
612 | "No address.\n" | |
613 | "@end defvar\n\n" | |
614 | "The return value is unspecified.") | |
1bbd0b84 | 615 | #define FUNC_NAME s_scm_bind |
370312ae | 616 | { |
370312ae | 617 | struct sockaddr *soka; |
439006bf | 618 | int size; |
370312ae GH |
619 | int fd; |
620 | ||
78446828 | 621 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf GH |
622 | SCM_VALIDATE_OPFPORT (1, sock); |
623 | SCM_VALIDATE_INUM (2, fam); | |
624 | soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args, 3, FUNC_NAME, | |
625 | &size); | |
ee149d03 | 626 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
627 | if (bind (fd, soka, size) == -1) |
628 | { | |
629 | int save_errno = errno; | |
630 | ||
631 | free (soka); | |
632 | errno = save_errno; | |
1bbd0b84 | 633 | SCM_SYSERROR; |
439006bf GH |
634 | } |
635 | free (soka); | |
370312ae GH |
636 | return SCM_UNSPECIFIED; |
637 | } | |
1bbd0b84 | 638 | #undef FUNC_NAME |
370312ae | 639 | |
a1ec6916 | 640 | SCM_DEFINE (scm_listen, "listen", 2, 0, 0, |
1bbd0b84 | 641 | (SCM sock, SCM backlog), |
b380b885 MD |
642 | "This procedure enables @var{socket} to accept connection\n" |
643 | "requests. @var{backlog} is an integer specifying\n" | |
644 | "the maximum length of the queue for pending connections.\n" | |
645 | "If the queue fills, new clients will fail to connect until the\n" | |
646 | "server calls @code{accept} to accept a connection from the queue.\n\n" | |
647 | "The return value is unspecified.") | |
1bbd0b84 | 648 | #define FUNC_NAME s_scm_listen |
370312ae GH |
649 | { |
650 | int fd; | |
78446828 | 651 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd GB |
652 | SCM_VALIDATE_OPFPORT (1,sock); |
653 | SCM_VALIDATE_INUM (2,backlog); | |
ee149d03 | 654 | fd = SCM_FPORT_FDES (sock); |
370312ae | 655 | if (listen (fd, SCM_INUM (backlog)) == -1) |
1bbd0b84 | 656 | SCM_SYSERROR; |
370312ae GH |
657 | return SCM_UNSPECIFIED; |
658 | } | |
1bbd0b84 | 659 | #undef FUNC_NAME |
370312ae GH |
660 | |
661 | /* Put the components of a sockaddr into a new SCM vector. */ | |
370312ae | 662 | static SCM |
439006bf | 663 | scm_addr_vector (struct sockaddr *address, const char *proc) |
0f2d19dd | 664 | { |
370312ae GH |
665 | short int fam = address->sa_family; |
666 | SCM result; | |
667 | SCM *ve; | |
439006bf | 668 | |
1ba8c23a | 669 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
370312ae | 670 | if (fam == AF_UNIX) |
0f2d19dd | 671 | { |
370312ae | 672 | struct sockaddr_un *nad = (struct sockaddr_un *) address; |
439006bf | 673 | |
00ffa0e7 | 674 | result = scm_c_make_vector (2, SCM_UNSPECIFIED); |
370312ae GH |
675 | ve = SCM_VELTS (result); |
676 | ve[0] = scm_ulong2num ((unsigned long) fam); | |
677 | ve[1] = scm_makfromstr (nad->sun_path, | |
678 | (scm_sizet) strlen (nad->sun_path), 0); | |
0f2d19dd | 679 | } |
0e958795 JB |
680 | else |
681 | #endif | |
682 | if (fam == AF_INET) | |
0f2d19dd | 683 | { |
370312ae | 684 | struct sockaddr_in *nad = (struct sockaddr_in *) address; |
439006bf | 685 | |
00ffa0e7 | 686 | result = scm_c_make_vector (3, SCM_UNSPECIFIED); |
370312ae GH |
687 | ve = SCM_VELTS (result); |
688 | ve[0] = scm_ulong2num ((unsigned long) fam); | |
689 | ve[1] = scm_ulong2num (ntohl (nad->sin_addr.s_addr)); | |
690 | ve[2] = scm_ulong2num ((unsigned long) ntohs (nad->sin_port)); | |
0f2d19dd JB |
691 | } |
692 | else | |
70d63753 | 693 | scm_misc_error (proc, "Unrecognised address family: ~A", |
e0c08f17 | 694 | SCM_LIST1 (SCM_MAKINUM (fam))); |
370312ae GH |
695 | |
696 | return result; | |
697 | } | |
698 | ||
439006bf GH |
699 | /* calculate the size of a buffer large enough to hold any supported |
700 | sockaddr type. if the buffer isn't large enough, certain system | |
701 | calls will return a truncated address. */ | |
370312ae | 702 | |
439006bf GH |
703 | #if defined (HAVE_UNIX_DOMAIN_SOCKETS) |
704 | #define MAX_SIZE_UN sizeof (struct sockaddr_un) | |
0e958795 | 705 | #else |
439006bf | 706 | #define MAX_SIZE_UN 0 |
0e958795 | 707 | #endif |
439006bf GH |
708 | |
709 | #define MAX_ADDR_SIZE max (sizeof (struct sockaddr_in), MAX_SIZE_UN) | |
0f2d19dd | 710 | |
a1ec6916 | 711 | SCM_DEFINE (scm_accept, "accept", 1, 0, 0, |
1bbd0b84 | 712 | (SCM sock), |
b380b885 MD |
713 | "Accepts a connection on a bound, listening socket @var{socket}. If there\n" |
714 | "are no pending connections in the queue, it waits until\n" | |
715 | "one is available unless the non-blocking option has been set on the\n" | |
716 | "socket.\n\n" | |
717 | "The return value is a\n" | |
718 | "pair in which the CAR is a new socket port for the connection and\n" | |
719 | "the CDR is an object with address information about the client which\n" | |
720 | "initiated the connection.\n\n" | |
721 | "If the address is not available then the CDR will be an empty vector.\n\n" | |
722 | "@var{socket} does not become part of the\n" | |
723 | "connection and will continue to accept new requests.") | |
1bbd0b84 | 724 | #define FUNC_NAME s_scm_accept |
0f2d19dd | 725 | { |
370312ae GH |
726 | int fd; |
727 | int newfd; | |
728 | SCM address; | |
729 | SCM newsock; | |
439006bf GH |
730 | int addr_size = MAX_ADDR_SIZE; |
731 | char max_addr[MAX_ADDR_SIZE]; | |
732 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
370312ae | 733 | |
78446828 | 734 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf | 735 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 736 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
737 | newfd = accept (fd, addr, &addr_size); |
738 | if (newfd == -1) | |
739 | SCM_SYSERROR; | |
740 | newsock = SCM_SOCK_FD_TO_PORT (newfd); | |
741 | if (addr_size > 0) | |
742 | address = scm_addr_vector (addr, FUNC_NAME); | |
0f2d19dd | 743 | else |
370312ae GH |
744 | address = SCM_BOOL_F; |
745 | ||
370312ae | 746 | return scm_cons (newsock, address); |
0f2d19dd | 747 | } |
1bbd0b84 | 748 | #undef FUNC_NAME |
0f2d19dd | 749 | |
a1ec6916 | 750 | SCM_DEFINE (scm_getsockname, "getsockname", 1, 0, 0, |
1bbd0b84 | 751 | (SCM sock), |
1e6808ea MG |
752 | "Return the address of @var{socket}, in the same form as the\n" |
753 | "object returned by @code{accept}. On many systems the address\n" | |
754 | "of a socket in the @code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 755 | #define FUNC_NAME s_scm_getsockname |
0f2d19dd | 756 | { |
370312ae GH |
757 | int fd; |
758 | SCM result; | |
439006bf GH |
759 | int addr_size = MAX_ADDR_SIZE; |
760 | char max_addr[MAX_ADDR_SIZE]; | |
761 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
762 | ||
78446828 | 763 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 764 | SCM_VALIDATE_OPFPORT (1,sock); |
ee149d03 | 765 | fd = SCM_FPORT_FDES (sock); |
439006bf | 766 | if (getsockname (fd, addr, &addr_size) == -1) |
1bbd0b84 | 767 | SCM_SYSERROR; |
439006bf GH |
768 | if (addr_size > 0) |
769 | result = scm_addr_vector (addr, FUNC_NAME); | |
0f2d19dd | 770 | else |
370312ae | 771 | result = SCM_BOOL_F; |
370312ae | 772 | return result; |
0f2d19dd | 773 | } |
1bbd0b84 | 774 | #undef FUNC_NAME |
0f2d19dd | 775 | |
a1ec6916 | 776 | SCM_DEFINE (scm_getpeername, "getpeername", 1, 0, 0, |
1bbd0b84 | 777 | (SCM sock), |
1e6808ea MG |
778 | "Return the address of the socket that the socket @var{socket}\n" |
779 | "is connected to, in the same form as the object returned by\n" | |
780 | "@code{accept}. On many systems the address of a socket in the\n" | |
781 | "@code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 782 | #define FUNC_NAME s_scm_getpeername |
0f2d19dd | 783 | { |
370312ae GH |
784 | int fd; |
785 | SCM result; | |
439006bf GH |
786 | int addr_size = MAX_ADDR_SIZE; |
787 | char max_addr[MAX_ADDR_SIZE]; | |
788 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
789 | ||
78446828 | 790 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 791 | SCM_VALIDATE_OPFPORT (1,sock); |
ee149d03 | 792 | fd = SCM_FPORT_FDES (sock); |
439006bf | 793 | if (getpeername (fd, addr, &addr_size) == -1) |
1bbd0b84 | 794 | SCM_SYSERROR; |
439006bf GH |
795 | if (addr_size > 0) |
796 | result = scm_addr_vector (addr, FUNC_NAME); | |
0f2d19dd | 797 | else |
370312ae | 798 | result = SCM_BOOL_F; |
370312ae | 799 | return result; |
0f2d19dd | 800 | } |
1bbd0b84 | 801 | #undef FUNC_NAME |
0f2d19dd | 802 | |
a1ec6916 | 803 | SCM_DEFINE (scm_recv, "recv!", 2, 1, 0, |
1bbd0b84 | 804 | (SCM sock, SCM buf, SCM flags), |
b380b885 MD |
805 | "Receives data from the socket port @var{socket}. @var{socket} must already\n" |
806 | "be bound to the address from which data is to be received.\n" | |
807 | "@var{buf} is a string into which\n" | |
808 | "the data will be written. The size of @var{buf} limits the amount of\n" | |
809 | "data which can be received: in the case of packet\n" | |
810 | "protocols, if a packet larger than this limit is encountered then some data\n" | |
811 | "will be irrevocably lost.\n\n" | |
812 | "The optional @var{flags} argument is a value or\n" | |
813 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
814 | "The value returned is the number of bytes read from the socket.\n\n" | |
09831f94 NJ |
815 | "Note that the data is read directly from the socket file descriptor:\n" |
816 | "any unread buffered port data is ignored.") | |
1bbd0b84 | 817 | #define FUNC_NAME s_scm_recv |
0f2d19dd | 818 | { |
370312ae GH |
819 | int rv; |
820 | int fd; | |
821 | int flg; | |
370312ae | 822 | |
3b3b36dd GB |
823 | SCM_VALIDATE_OPFPORT (1,sock); |
824 | SCM_VALIDATE_STRING (2,buf); | |
825 | SCM_VALIDATE_INUM_DEF_COPY (3,flags,0,flg); | |
ee149d03 | 826 | fd = SCM_FPORT_FDES (sock); |
370312ae | 827 | |
bfa974f0 | 828 | SCM_SYSCALL (rv = recv (fd, SCM_STRING_CHARS (buf), SCM_STRING_LENGTH (buf), flg)); |
370312ae | 829 | if (rv == -1) |
1bbd0b84 | 830 | SCM_SYSERROR; |
370312ae | 831 | |
1146b6cd | 832 | return SCM_MAKINUM (rv); |
370312ae | 833 | } |
1bbd0b84 | 834 | #undef FUNC_NAME |
370312ae | 835 | |
a1ec6916 | 836 | SCM_DEFINE (scm_send, "send", 2, 1, 0, |
1bbd0b84 | 837 | (SCM sock, SCM message, SCM flags), |
b380b885 MD |
838 | "Transmits the string @var{message} on the socket port @var{socket}. \n" |
839 | "@var{socket} must already be bound to a destination address. The\n" | |
840 | "value returned is the number of bytes transmitted -- it's possible for\n" | |
841 | "this to be less than the length of @var{message} if the socket is\n" | |
842 | "set to be non-blocking. The optional @var{flags} argument is a value or\n" | |
843 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
844 | "Note that the data is written directly to the socket file descriptor:\n" | |
845 | "any unflushed buffered port data is ignored.") | |
1bbd0b84 | 846 | #define FUNC_NAME s_scm_send |
370312ae GH |
847 | { |
848 | int rv; | |
849 | int fd; | |
850 | int flg; | |
851 | ||
78446828 | 852 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 853 | SCM_VALIDATE_OPFPORT (1,sock); |
a6d9e5ab | 854 | SCM_VALIDATE_STRING (2, message); |
3b3b36dd | 855 | SCM_VALIDATE_INUM_DEF_COPY (3,flags,0,flg); |
ee149d03 | 856 | fd = SCM_FPORT_FDES (sock); |
370312ae | 857 | |
34f0f2b8 | 858 | SCM_SYSCALL (rv = send (fd, SCM_STRING_CHARS (message), SCM_STRING_LENGTH (message), flg)); |
370312ae | 859 | if (rv == -1) |
1bbd0b84 | 860 | SCM_SYSERROR; |
370312ae GH |
861 | return SCM_MAKINUM (rv); |
862 | } | |
1bbd0b84 | 863 | #undef FUNC_NAME |
370312ae | 864 | |
a1ec6916 | 865 | SCM_DEFINE (scm_recvfrom, "recvfrom!", 2, 3, 0, |
60d02d09 | 866 | (SCM sock, SCM str, SCM flags, SCM start, SCM end), |
1e6808ea MG |
867 | "Return data from the socket port @var{socket} and also\n" |
868 | "information about where the data was received from.\n" | |
869 | "@var{socket} must already be bound to the address from which\n" | |
870 | "data is to be received. @code{str}, is a string into which the\n" | |
871 | "data will be written. The size of @var{str} limits the amount\n" | |
872 | "of data which can be received: in the case of packet protocols,\n" | |
873 | "if a packet larger than this limit is encountered then some\n" | |
874 | "data will be irrevocably lost.\n" | |
875 | "\n" | |
876 | "The optional @var{flags} argument is a value or bitwise OR of\n" | |
877 | "@code{MSG_OOB}, @code{MSG_PEEK}, @code{MSG_DONTROUTE} etc.\n" | |
878 | "\n" | |
879 | "The value returned is a pair: the @emph{car} is the number of\n" | |
880 | "bytes read from the socket and the @emph{cdr} an address object\n" | |
881 | "in the same form as returned by @code{accept}.\n" | |
882 | "\n" | |
883 | "The @var{start} and @var{end} arguments specify a substring of\n" | |
884 | "@var{str} to which the data should be written.\n" | |
885 | "\n" | |
886 | "Note that the data is read directly from the socket file\n" | |
887 | "descriptor: any unread buffered port data is ignored.") | |
1bbd0b84 | 888 | #define FUNC_NAME s_scm_recvfrom |
370312ae GH |
889 | { |
890 | int rv; | |
891 | int fd; | |
892 | int flg; | |
60d02d09 GH |
893 | char *buf; |
894 | int offset; | |
1146b6cd | 895 | int cend; |
370312ae | 896 | SCM address; |
439006bf GH |
897 | int addr_size = MAX_ADDR_SIZE; |
898 | char max_addr[MAX_ADDR_SIZE]; | |
899 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
370312ae | 900 | |
3b3b36dd | 901 | SCM_VALIDATE_OPFPORT (1,sock); |
60d02d09 GH |
902 | fd = SCM_FPORT_FDES (sock); |
903 | SCM_VALIDATE_SUBSTRING_SPEC_COPY (2, str, buf, 4, start, offset, | |
904 | 5, end, cend); | |
1146b6cd GH |
905 | if (SCM_UNBNDP (flags)) |
906 | flg = 0; | |
370312ae | 907 | else |
60d02d09 | 908 | SCM_VALIDATE_ULONG_COPY (3, flags, flg); |
370312ae | 909 | |
97d0e20b GH |
910 | /* recvfrom will not necessarily return an address. usually nothing |
911 | is returned for stream sockets. */ | |
439006bf | 912 | addr->sa_family = AF_UNSPEC; |
60d02d09 | 913 | SCM_SYSCALL (rv = recvfrom (fd, buf + offset, |
1146b6cd | 914 | cend - offset, flg, |
439006bf | 915 | addr, &addr_size)); |
370312ae | 916 | if (rv == -1) |
1bbd0b84 | 917 | SCM_SYSERROR; |
439006bf GH |
918 | if (addr_size > 0 && addr->sa_family != AF_UNSPEC) |
919 | address = scm_addr_vector (addr, FUNC_NAME); | |
370312ae GH |
920 | else |
921 | address = SCM_BOOL_F; | |
922 | ||
1146b6cd | 923 | return scm_cons (SCM_MAKINUM (rv), address); |
0f2d19dd | 924 | } |
1bbd0b84 | 925 | #undef FUNC_NAME |
0f2d19dd | 926 | |
a1ec6916 | 927 | SCM_DEFINE (scm_sendto, "sendto", 4, 0, 1, |
1bbd0b84 | 928 | (SCM sock, SCM message, SCM fam, SCM address, SCM args_and_flags), |
b380b885 MD |
929 | "Transmits the string @var{message} on the socket port @var{socket}. The\n" |
930 | "destination address is specified using the @var{family}, @var{address} and\n" | |
931 | "@var{arg} arguments, in a similar way to the @code{connect}\n" | |
932 | "procedure. The\n" | |
933 | "value returned is the number of bytes transmitted -- it's possible for\n" | |
934 | "this to be less than the length of @var{message} if the socket is\n" | |
935 | "set to be non-blocking. The optional @var{flags} argument is a value or\n" | |
936 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
937 | "Note that the data is written directly to the socket file descriptor:\n" | |
938 | "any unflushed buffered port data is ignored.") | |
1bbd0b84 | 939 | #define FUNC_NAME s_scm_sendto |
370312ae GH |
940 | { |
941 | int rv; | |
942 | int fd; | |
943 | int flg; | |
944 | struct sockaddr *soka; | |
439006bf | 945 | int size; |
370312ae | 946 | |
78446828 | 947 | sock = SCM_COERCE_OUTPORT (sock); |
3b3b36dd | 948 | SCM_VALIDATE_FPORT (1,sock); |
a6d9e5ab | 949 | SCM_VALIDATE_STRING (2, message); |
3b3b36dd | 950 | SCM_VALIDATE_INUM (3,fam); |
ee149d03 | 951 | fd = SCM_FPORT_FDES (sock); |
370312ae | 952 | soka = scm_fill_sockaddr (SCM_INUM (fam), address, &args_and_flags, 4, |
1bbd0b84 | 953 | FUNC_NAME, &size); |
370312ae GH |
954 | if (SCM_NULLP (args_and_flags)) |
955 | flg = 0; | |
956 | else | |
957 | { | |
3b3b36dd | 958 | SCM_VALIDATE_CONS (5,args_and_flags); |
e4b265d8 | 959 | flg = SCM_NUM2ULONG (5, SCM_CAR (args_and_flags)); |
370312ae | 960 | } |
439006bf GH |
961 | SCM_SYSCALL (rv = sendto (fd, SCM_STRING_CHARS (message), |
962 | SCM_STRING_LENGTH (message), | |
ae2fa5bc | 963 | flg, soka, size)); |
370312ae | 964 | if (rv == -1) |
439006bf GH |
965 | { |
966 | int save_errno = errno; | |
967 | free (soka); | |
968 | errno = save_errno; | |
969 | SCM_SYSERROR; | |
970 | } | |
971 | free (soka); | |
370312ae GH |
972 | return SCM_MAKINUM (rv); |
973 | } | |
1bbd0b84 | 974 | #undef FUNC_NAME |
370312ae GH |
975 | \f |
976 | ||
977 | ||
978 | void | |
0f2d19dd | 979 | scm_init_socket () |
0f2d19dd | 980 | { |
370312ae GH |
981 | /* protocol families. */ |
982 | #ifdef AF_UNSPEC | |
983 | scm_sysintern ("AF_UNSPEC", SCM_MAKINUM (AF_UNSPEC)); | |
984 | #endif | |
985 | #ifdef AF_UNIX | |
986 | scm_sysintern ("AF_UNIX", SCM_MAKINUM (AF_UNIX)); | |
987 | #endif | |
988 | #ifdef AF_INET | |
989 | scm_sysintern ("AF_INET", SCM_MAKINUM (AF_INET)); | |
990 | #endif | |
3453619b GH |
991 | #ifdef AF_INET6 |
992 | scm_sysintern ("AF_INET6", SCM_MAKINUM (AF_INET6)); | |
993 | #endif | |
370312ae GH |
994 | |
995 | #ifdef PF_UNSPEC | |
996 | scm_sysintern ("PF_UNSPEC", SCM_MAKINUM (PF_UNSPEC)); | |
997 | #endif | |
998 | #ifdef PF_UNIX | |
999 | scm_sysintern ("PF_UNIX", SCM_MAKINUM (PF_UNIX)); | |
1000 | #endif | |
1001 | #ifdef PF_INET | |
1002 | scm_sysintern ("PF_INET", SCM_MAKINUM (PF_INET)); | |
1003 | #endif | |
3453619b GH |
1004 | #ifdef PF_INET6 |
1005 | scm_sysintern ("PF_INET6", SCM_MAKINUM (PF_INET6)); | |
1006 | #endif | |
370312ae GH |
1007 | |
1008 | /* socket types. */ | |
1009 | #ifdef SOCK_STREAM | |
1010 | scm_sysintern ("SOCK_STREAM", SCM_MAKINUM (SOCK_STREAM)); | |
1011 | #endif | |
1012 | #ifdef SOCK_DGRAM | |
1013 | scm_sysintern ("SOCK_DGRAM", SCM_MAKINUM (SOCK_DGRAM)); | |
1014 | #endif | |
1015 | #ifdef SOCK_RAW | |
1016 | scm_sysintern ("SOCK_RAW", SCM_MAKINUM (SOCK_RAW)); | |
1017 | #endif | |
1018 | ||
1019 | /* setsockopt level. */ | |
1020 | #ifdef SOL_SOCKET | |
1021 | scm_sysintern ("SOL_SOCKET", SCM_MAKINUM (SOL_SOCKET)); | |
1022 | #endif | |
1023 | #ifdef SOL_IP | |
1024 | scm_sysintern ("SOL_IP", SCM_MAKINUM (SOL_IP)); | |
1025 | #endif | |
1026 | #ifdef SOL_TCP | |
1027 | scm_sysintern ("SOL_TCP", SCM_MAKINUM (SOL_TCP)); | |
1028 | #endif | |
1029 | #ifdef SOL_UDP | |
1030 | scm_sysintern ("SOL_UDP", SCM_MAKINUM (SOL_UDP)); | |
1031 | #endif | |
1032 | ||
1033 | /* setsockopt names. */ | |
1034 | #ifdef SO_DEBUG | |
1035 | scm_sysintern ("SO_DEBUG", SCM_MAKINUM (SO_DEBUG)); | |
1036 | #endif | |
1037 | #ifdef SO_REUSEADDR | |
1038 | scm_sysintern ("SO_REUSEADDR", SCM_MAKINUM (SO_REUSEADDR)); | |
1039 | #endif | |
1040 | #ifdef SO_STYLE | |
1041 | scm_sysintern ("SO_STYLE", SCM_MAKINUM (SO_STYLE)); | |
1042 | #endif | |
1043 | #ifdef SO_TYPE | |
1044 | scm_sysintern ("SO_TYPE", SCM_MAKINUM (SO_TYPE)); | |
1045 | #endif | |
1046 | #ifdef SO_ERROR | |
1047 | scm_sysintern ("SO_ERROR", SCM_MAKINUM (SO_ERROR)); | |
1048 | #endif | |
1049 | #ifdef SO_DONTROUTE | |
1050 | scm_sysintern ("SO_DONTROUTE", SCM_MAKINUM (SO_DONTROUTE)); | |
1051 | #endif | |
1052 | #ifdef SO_BROADCAST | |
1053 | scm_sysintern ("SO_BROADCAST", SCM_MAKINUM (SO_BROADCAST)); | |
1054 | #endif | |
1055 | #ifdef SO_SNDBUF | |
1056 | scm_sysintern ("SO_SNDBUF", SCM_MAKINUM (SO_SNDBUF)); | |
1057 | #endif | |
1058 | #ifdef SO_RCVBUF | |
1059 | scm_sysintern ("SO_RCVBUF", SCM_MAKINUM (SO_RCVBUF)); | |
1060 | #endif | |
1061 | #ifdef SO_KEEPALIVE | |
1062 | scm_sysintern ("SO_KEEPALIVE", SCM_MAKINUM (SO_KEEPALIVE)); | |
1063 | #endif | |
1064 | #ifdef SO_OOBINLINE | |
1065 | scm_sysintern ("SO_OOBINLINE", SCM_MAKINUM (SO_OOBINLINE)); | |
1066 | #endif | |
1067 | #ifdef SO_NO_CHECK | |
1068 | scm_sysintern ("SO_NO_CHECK", SCM_MAKINUM (SO_NO_CHECK)); | |
1069 | #endif | |
1070 | #ifdef SO_PRIORITY | |
1071 | scm_sysintern ("SO_PRIORITY", SCM_MAKINUM (SO_PRIORITY)); | |
1072 | #endif | |
1073 | #ifdef SO_LINGER | |
1074 | scm_sysintern ("SO_LINGER", SCM_MAKINUM (SO_LINGER)); | |
1075 | #endif | |
1076 | ||
1077 | /* recv/send options. */ | |
1078 | #ifdef MSG_OOB | |
1079 | scm_sysintern ("MSG_OOB", SCM_MAKINUM (MSG_OOB)); | |
1080 | #endif | |
1081 | #ifdef MSG_PEEK | |
1082 | scm_sysintern ("MSG_PEEK", SCM_MAKINUM (MSG_PEEK)); | |
1083 | #endif | |
1084 | #ifdef MSG_DONTROUTE | |
1085 | scm_sysintern ("MSG_DONTROUTE", SCM_MAKINUM (MSG_DONTROUTE)); | |
1086 | #endif | |
1087 | ||
0f2d19dd | 1088 | scm_add_feature ("socket"); |
370312ae | 1089 | |
8dc9439f | 1090 | #ifndef SCM_MAGIC_SNARFER |
a0599745 | 1091 | #include "libguile/socket.x" |
8dc9439f | 1092 | #endif |
0f2d19dd JB |
1093 | } |
1094 | ||
89e00824 ML |
1095 | |
1096 | /* | |
1097 | Local Variables: | |
1098 | c-file-style: "gnu" | |
1099 | End: | |
1100 | */ |