Commit | Line | Data |
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d21a1dc8 | 1 | /* Copyright (C) 1996, 1997, 1998, 2000, 2001, 2002, 2003, 2004, 2005, |
b9b88351 | 2 | * 2006, 2007, 2009, 2011, 2012, 2013, 2014 Free Software Foundation, Inc. |
d21a1dc8 | 3 | * |
73be1d9e | 4 | * This library is free software; you can redistribute it and/or |
53befeb7 NJ |
5 | * modify it under the terms of the GNU Lesser General Public License |
6 | * as published by the Free Software Foundation; either version 3 of | |
7 | * the License, or (at your option) any later version. | |
86667910 | 8 | * |
53befeb7 NJ |
9 | * This library is distributed in the hope that it will be useful, but |
10 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
73be1d9e MV |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. | |
86667910 | 13 | * |
73be1d9e MV |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, write to the Free Software | |
53befeb7 NJ |
16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
17 | * 02110-1301 USA | |
73be1d9e | 18 | */ |
1bbd0b84 | 19 | |
1bbd0b84 | 20 | |
0f2d19dd JB |
21 | \f |
22 | ||
dbb605f5 | 23 | #ifdef HAVE_CONFIG_H |
eccde741 RB |
24 | # include <config.h> |
25 | #endif | |
26 | ||
e6e2e95a | 27 | #include <errno.h> |
cc948107 | 28 | #include <verify.h> |
e6e2e95a | 29 | |
af68e5e5 SJ |
30 | #ifdef HAVE_STDINT_H |
31 | #include <stdint.h> | |
32 | #endif | |
95b88819 GH |
33 | #ifdef HAVE_STRING_H |
34 | #include <string.h> | |
35 | #endif | |
370312ae GH |
36 | #ifdef HAVE_UNISTD_H |
37 | #include <unistd.h> | |
38 | #endif | |
0f2d19dd JB |
39 | #include <sys/types.h> |
40 | #include <sys/socket.h> | |
1ba8c23a | 41 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
0f2d19dd | 42 | #include <sys/un.h> |
0e958795 | 43 | #endif |
0f2d19dd JB |
44 | #include <netinet/in.h> |
45 | #include <netdb.h> | |
46 | #include <arpa/inet.h> | |
09b204d3 | 47 | |
b0dbbacb AW |
48 | #include <gmp.h> |
49 | ||
50 | #include "libguile/_scm.h" | |
51 | #include "libguile/arrays.h" | |
52 | #include "libguile/feature.h" | |
53 | #include "libguile/fports.h" | |
54 | #include "libguile/strings.h" | |
55 | #include "libguile/vectors.h" | |
56 | #include "libguile/dynwind.h" | |
57 | #include "libguile/srfi-13.h" | |
58 | ||
59 | #include "libguile/validate.h" | |
60 | #include "libguile/socket.h" | |
61 | ||
62 | #if SCM_ENABLE_DEPRECATED == 1 | |
63 | # include "libguile/deprecation.h" | |
82893676 | 64 | #endif |
0f2d19dd | 65 | |
b0dbbacb | 66 | |
0f2d19dd | 67 | |
97d0e20b GH |
68 | #if defined (HAVE_UNIX_DOMAIN_SOCKETS) && !defined (SUN_LEN) |
69 | #define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) \ | |
70 | + strlen ((ptr)->sun_path)) | |
71 | #endif | |
72 | ||
f43f3620 LC |
73 | /* The largest possible socket address. Wrapping it in a union guarantees |
74 | that the compiler will make it suitably aligned. */ | |
75 | typedef union | |
76 | { | |
77 | struct sockaddr sockaddr; | |
78 | struct sockaddr_in sockaddr_in; | |
79 | ||
80 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS | |
81 | struct sockaddr_un sockaddr_un; | |
82 | #endif | |
83 | #ifdef HAVE_IPV6 | |
84 | struct sockaddr_in6 sockaddr_in6; | |
85 | #endif | |
86 | } scm_t_max_sockaddr; | |
87 | ||
88 | ||
89 | /* Maximum size of a socket address. */ | |
90 | #define MAX_ADDR_SIZE (sizeof (scm_t_max_sockaddr)) | |
91 | ||
92 | ||
0f2d19dd JB |
93 | \f |
94 | ||
66c73b76 GH |
95 | #ifdef HAVE_INET_NETOF |
96 | SCM_DEFINE (scm_inet_netof, "inet-netof", 1, 0, 0, | |
97 | (SCM address), | |
eefae538 GH |
98 | "Return the network number part of the given IPv4\n" |
99 | "Internet address. E.g.,\n\n" | |
66c73b76 GH |
100 | "@lisp\n" |
101 | "(inet-netof 2130706433) @result{} 127\n" | |
102 | "@end lisp") | |
103 | #define FUNC_NAME s_scm_inet_netof | |
104 | { | |
105 | struct in_addr addr; | |
106 | addr.s_addr = htonl (SCM_NUM2ULONG (1, address)); | |
b9bd8526 | 107 | return scm_from_ulong (inet_netof (addr)); |
66c73b76 GH |
108 | } |
109 | #undef FUNC_NAME | |
110 | #endif | |
111 | ||
112 | #ifdef HAVE_INET_LNAOF | |
113 | SCM_DEFINE (scm_lnaof, "inet-lnaof", 1, 0, 0, | |
114 | (SCM address), | |
115 | "Return the local-address-with-network part of the given\n" | |
eefae538 GH |
116 | "IPv4 Internet address, using the obsolete class A/B/C system.\n" |
117 | "E.g.,\n\n" | |
66c73b76 GH |
118 | "@lisp\n" |
119 | "(inet-lnaof 2130706433) @result{} 1\n" | |
120 | "@end lisp") | |
121 | #define FUNC_NAME s_scm_lnaof | |
122 | { | |
123 | struct in_addr addr; | |
124 | addr.s_addr = htonl (SCM_NUM2ULONG (1, address)); | |
b9bd8526 | 125 | return scm_from_ulong (inet_lnaof (addr)); |
66c73b76 GH |
126 | } |
127 | #undef FUNC_NAME | |
128 | #endif | |
129 | ||
130 | #ifdef HAVE_INET_MAKEADDR | |
131 | SCM_DEFINE (scm_inet_makeaddr, "inet-makeaddr", 2, 0, 0, | |
132 | (SCM net, SCM lna), | |
eefae538 | 133 | "Make an IPv4 Internet address by combining the network number\n" |
66c73b76 | 134 | "@var{net} with the local-address-within-network number\n" |
eefae538 | 135 | "@var{lna}. E.g.,\n\n" |
66c73b76 GH |
136 | "@lisp\n" |
137 | "(inet-makeaddr 127 1) @result{} 2130706433\n" | |
138 | "@end lisp") | |
139 | #define FUNC_NAME s_scm_inet_makeaddr | |
140 | { | |
141 | struct in_addr addr; | |
142 | unsigned long netnum; | |
143 | unsigned long lnanum; | |
144 | ||
145 | netnum = SCM_NUM2ULONG (1, net); | |
146 | lnanum = SCM_NUM2ULONG (2, lna); | |
147 | addr = inet_makeaddr (netnum, lnanum); | |
b9bd8526 | 148 | return scm_from_ulong (ntohl (addr.s_addr)); |
66c73b76 GH |
149 | } |
150 | #undef FUNC_NAME | |
151 | #endif | |
152 | ||
a57a0b1e | 153 | #ifdef HAVE_IPV6 |
eefae538 | 154 | |
66c73b76 GH |
155 | /* flip a 128 bit IPv6 address between host and network order. */ |
156 | #ifdef WORDS_BIGENDIAN | |
157 | #define FLIP_NET_HOST_128(addr) | |
158 | #else | |
159 | #define FLIP_NET_HOST_128(addr)\ | |
160 | {\ | |
161 | int i;\ | |
162 | \ | |
163 | for (i = 0; i < 8; i++)\ | |
164 | {\ | |
2de4f939 | 165 | scm_t_uint8 c = (addr)[i];\ |
66c73b76 GH |
166 | \ |
167 | (addr)[i] = (addr)[15 - i];\ | |
168 | (addr)[15 - i] = c;\ | |
169 | }\ | |
170 | } | |
171 | #endif | |
172 | ||
2de4f939 RB |
173 | #ifdef WORDS_BIGENDIAN |
174 | #define FLIPCPY_NET_HOST_128(dest, src) memcpy (dest, src, 16) | |
175 | #else | |
176 | #define FLIPCPY_NET_HOST_128(dest, src) \ | |
177 | { \ | |
178 | const scm_t_uint8 *tmp_srcp = (src) + 15; \ | |
179 | scm_t_uint8 *tmp_destp = (dest); \ | |
180 | \ | |
181 | do { \ | |
182 | *tmp_destp++ = *tmp_srcp--; \ | |
183 | } while (tmp_srcp != (src)); \ | |
184 | } | |
185 | #endif | |
186 | ||
187 | ||
7310ad0c | 188 | #if (SIZEOF_SCM_T_BITS * SCM_CHAR_BIT) > 128 |
2de4f939 RB |
189 | #error "Assumption that scm_t_bits <= 128 bits has been violated." |
190 | #endif | |
191 | ||
7310ad0c | 192 | #if (SIZEOF_UNSIGNED_LONG * SCM_CHAR_BIT) > 128 |
2de4f939 RB |
193 | #error "Assumption that unsigned long <= 128 bits has been violated." |
194 | #endif | |
195 | ||
7310ad0c | 196 | #if (SIZEOF_UNSIGNED_LONG_LONG * SCM_CHAR_BIT) > 128 |
2de4f939 RB |
197 | #error "Assumption that unsigned long long <= 128 bits has been violated." |
198 | #endif | |
199 | ||
66c73b76 GH |
200 | /* convert a 128 bit IPv6 address in network order to a host ordered |
201 | SCM integer. */ | |
7cee5b31 MV |
202 | static SCM |
203 | scm_from_ipv6 (const scm_t_uint8 *src) | |
66c73b76 | 204 | { |
2b4d1547 KR |
205 | SCM result = scm_i_mkbig (); |
206 | mpz_import (SCM_I_BIG_MPZ (result), | |
207 | 1, /* chunk */ | |
208 | 1, /* big-endian chunk ordering */ | |
209 | 16, /* chunks are 16 bytes long */ | |
210 | 1, /* big-endian byte ordering */ | |
211 | 0, /* "nails" -- leading unused bits per chunk */ | |
212 | src); | |
213 | return scm_i_normbig (result); | |
214 | } | |
66c73b76 GH |
215 | |
216 | /* convert a host ordered SCM integer to a 128 bit IPv6 address in | |
217 | network order. */ | |
7cee5b31 MV |
218 | static void |
219 | scm_to_ipv6 (scm_t_uint8 dst[16], SCM src) | |
66c73b76 | 220 | { |
e11e83f3 | 221 | if (SCM_I_INUMP (src)) |
66c73b76 | 222 | { |
e11e83f3 | 223 | scm_t_signed_bits n = SCM_I_INUM (src); |
7cee5b31 MV |
224 | if (n < 0) |
225 | scm_out_of_range (NULL, src); | |
2de4f939 RB |
226 | #ifdef WORDS_BIGENDIAN |
227 | memset (dst, 0, 16 - sizeof (scm_t_signed_bits)); | |
228 | memcpy (dst + (16 - sizeof (scm_t_signed_bits)), | |
229 | &n, | |
230 | sizeof (scm_t_signed_bits)); | |
231 | #else | |
232 | memset (dst + sizeof (scm_t_signed_bits), | |
233 | 0, | |
234 | 16 - sizeof (scm_t_signed_bits)); | |
235 | /* FIXME: this pair of ops is kinda wasteful -- should rewrite as | |
236 | a single loop perhaps, similar to the handling of bignums. */ | |
237 | memcpy (dst, &n, sizeof (scm_t_signed_bits)); | |
238 | FLIP_NET_HOST_128 (dst); | |
239 | #endif | |
66c73b76 | 240 | } |
7cee5b31 | 241 | else if (SCM_BIGP (src)) |
66c73b76 | 242 | { |
2de4f939 | 243 | size_t count; |
7cee5b31 MV |
244 | |
245 | if ((mpz_sgn (SCM_I_BIG_MPZ (src)) < 0) | |
246 | || mpz_sizeinbase (SCM_I_BIG_MPZ (src), 2) > 128) | |
247 | scm_out_of_range (NULL, src); | |
248 | ||
66c73b76 | 249 | memset (dst, 0, 16); |
2de4f939 RB |
250 | mpz_export (dst, |
251 | &count, | |
252 | 1, /* big-endian chunk ordering */ | |
253 | 16, /* chunks are 16 bytes long */ | |
254 | 1, /* big-endian byte ordering */ | |
255 | 0, /* "nails" -- leading unused bits per chunk */ | |
256 | SCM_I_BIG_MPZ (src)); | |
257 | scm_remember_upto_here_1 (src); | |
66c73b76 | 258 | } |
2de4f939 | 259 | else |
1ff4da65 | 260 | scm_wrong_type_arg_msg ("scm_to_ipv6", 0, src, "integer"); |
2de4f939 RB |
261 | } |
262 | ||
e91f21dc | 263 | #endif /* HAVE_IPV6 */ |
66c73b76 | 264 | |
e91f21dc | 265 | \f |
66c73b76 | 266 | |
66c73b76 GH |
267 | SCM_DEFINE (scm_inet_ntop, "inet-ntop", 2, 0, 0, |
268 | (SCM family, SCM address), | |
eefae538 | 269 | "Convert a network address into a printable string.\n" |
66c73b76 GH |
270 | "Note that unlike the C version of this function,\n" |
271 | "the input is an integer with normal host byte ordering.\n" | |
eefae538 | 272 | "@var{family} can be @code{AF_INET} or @code{AF_INET6}. E.g.,\n\n" |
66c73b76 | 273 | "@lisp\n" |
dd85ce47 | 274 | "(inet-ntop AF_INET 2130706433) @result{} \"127.0.0.1\"\n" |
187a4390 NJ |
275 | "(inet-ntop AF_INET6 (- (expt 2 128) 1))\n" |
276 | " @result{} \"ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff\"\n" | |
66c73b76 GH |
277 | "@end lisp") |
278 | #define FUNC_NAME s_scm_inet_ntop | |
279 | { | |
280 | int af; | |
281 | #ifdef INET6_ADDRSTRLEN | |
282 | char dst[INET6_ADDRSTRLEN]; | |
283 | #else | |
284 | char dst[46]; | |
285 | #endif | |
7a5fb796 | 286 | const char *result; |
66c73b76 | 287 | |
7cee5b31 | 288 | af = scm_to_int (family); |
e91f21dc LC |
289 | SCM_ASSERT_RANGE (1, family, |
290 | af == AF_INET | |
291 | #ifdef HAVE_IPV6 | |
292 | || af == AF_INET6 | |
293 | #endif | |
294 | ); | |
66c73b76 | 295 | if (af == AF_INET) |
7a5fb796 LC |
296 | { |
297 | scm_t_uint32 addr4; | |
298 | ||
299 | addr4 = htonl (SCM_NUM2ULONG (2, address)); | |
300 | result = inet_ntop (af, &addr4, dst, sizeof (dst)); | |
301 | } | |
e91f21dc LC |
302 | #ifdef HAVE_IPV6 |
303 | else if (af == AF_INET6) | |
7a5fb796 LC |
304 | { |
305 | char addr6[16]; | |
306 | ||
307 | scm_to_ipv6 ((scm_t_uint8 *) addr6, address); | |
308 | result = inet_ntop (af, &addr6, dst, sizeof (dst)); | |
309 | } | |
e91f21dc LC |
310 | #endif |
311 | else | |
312 | SCM_MISC_ERROR ("unsupported address family", family); | |
7a5fb796 LC |
313 | |
314 | if (result == NULL) | |
66c73b76 | 315 | SCM_SYSERROR; |
7a5fb796 | 316 | |
cc95e00a | 317 | return scm_from_locale_string (dst); |
66c73b76 GH |
318 | } |
319 | #undef FUNC_NAME | |
66c73b76 | 320 | |
e91f21dc LC |
321 | SCM_DEFINE (scm_inet_pton, "inet-pton", 2, 0, 0, |
322 | (SCM family, SCM address), | |
323 | "Convert a string containing a printable network address to\n" | |
324 | "an integer address. Note that unlike the C version of this\n" | |
325 | "function,\n" | |
326 | "the result is an integer with normal host byte ordering.\n" | |
327 | "@var{family} can be @code{AF_INET} or @code{AF_INET6}. E.g.,\n\n" | |
328 | "@lisp\n" | |
329 | "(inet-pton AF_INET \"127.0.0.1\") @result{} 2130706433\n" | |
330 | "(inet-pton AF_INET6 \"::1\") @result{} 1\n" | |
331 | "@end lisp") | |
332 | #define FUNC_NAME s_scm_inet_pton | |
333 | { | |
334 | int af; | |
335 | char *src; | |
336 | scm_t_uint32 dst[4]; | |
337 | int rv, eno; | |
338 | ||
339 | af = scm_to_int (family); | |
340 | SCM_ASSERT_RANGE (1, family, | |
341 | af == AF_INET | |
342 | #ifdef HAVE_IPV6 | |
343 | || af == AF_INET6 | |
344 | #endif | |
345 | ); | |
eefae538 | 346 | |
e91f21dc LC |
347 | src = scm_to_locale_string (address); |
348 | rv = inet_pton (af, src, dst); | |
349 | eno = errno; | |
350 | free (src); | |
351 | errno = eno; | |
352 | ||
353 | if (rv == -1) | |
354 | SCM_SYSERROR; | |
355 | else if (rv == 0) | |
356 | SCM_MISC_ERROR ("Bad address", SCM_EOL); | |
357 | if (af == AF_INET) | |
358 | return scm_from_ulong (ntohl (*dst)); | |
359 | #ifdef HAVE_IPV6 | |
360 | else if (af == AF_INET6) | |
361 | return scm_from_ipv6 ((scm_t_uint8 *) dst); | |
362 | #endif | |
363 | else | |
364 | SCM_MISC_ERROR ("unsupported address family", family); | |
365 | } | |
366 | #undef FUNC_NAME | |
367 | ||
368 | \f | |
bc45012d | 369 | SCM_SYMBOL (sym_socket, "socket"); |
82ddea4e | 370 | |
439006bf | 371 | #define SCM_SOCK_FD_TO_PORT(fd) scm_fdes_to_port (fd, "r+0", sym_socket) |
1bbd0b84 | 372 | |
a1ec6916 | 373 | SCM_DEFINE (scm_socket, "socket", 3, 0, 0, |
1bbd0b84 | 374 | (SCM family, SCM style, SCM proto), |
1e6808ea | 375 | "Return a new socket port of the type specified by @var{family},\n" |
eefae538 | 376 | "@var{style} and @var{proto}. All three parameters are\n" |
3453619b GH |
377 | "integers. Supported values for @var{family} are\n" |
378 | "@code{AF_UNIX}, @code{AF_INET} and @code{AF_INET6}.\n" | |
379 | "Typical values for @var{style} are @code{SOCK_STREAM},\n" | |
eefae538 GH |
380 | "@code{SOCK_DGRAM} and @code{SOCK_RAW}.\n\n" |
381 | "@var{proto} can be obtained from a protocol name using\n" | |
1e6808ea | 382 | "@code{getprotobyname}. A value of zero specifies the default\n" |
eefae538 | 383 | "protocol, which is usually right.\n\n" |
1e6808ea MG |
384 | "A single socket port cannot by used for communication until it\n" |
385 | "has been connected to another socket.") | |
1bbd0b84 | 386 | #define FUNC_NAME s_scm_socket |
0f2d19dd | 387 | { |
370312ae | 388 | int fd; |
370312ae | 389 | |
7cee5b31 MV |
390 | fd = socket (scm_to_int (family), |
391 | scm_to_int (style), | |
392 | scm_to_int (proto)); | |
439006bf GH |
393 | if (fd == -1) |
394 | SCM_SYSERROR; | |
395 | return SCM_SOCK_FD_TO_PORT (fd); | |
0f2d19dd | 396 | } |
1bbd0b84 | 397 | #undef FUNC_NAME |
0f2d19dd | 398 | |
0e958795 | 399 | #ifdef HAVE_SOCKETPAIR |
a1ec6916 | 400 | SCM_DEFINE (scm_socketpair, "socketpair", 3, 0, 0, |
1bbd0b84 | 401 | (SCM family, SCM style, SCM proto), |
1e6808ea | 402 | "Return a pair of connected (but unnamed) socket ports of the\n" |
eefae538 | 403 | "type specified by @var{family}, @var{style} and @var{proto}.\n" |
1e6808ea MG |
404 | "Many systems support only socket pairs of the @code{AF_UNIX}\n" |
405 | "family. Zero is likely to be the only meaningful value for\n" | |
eefae538 | 406 | "@var{proto}.") |
1bbd0b84 | 407 | #define FUNC_NAME s_scm_socketpair |
0f2d19dd | 408 | { |
370312ae GH |
409 | int fam; |
410 | int fd[2]; | |
370312ae | 411 | |
7cee5b31 | 412 | fam = scm_to_int (family); |
370312ae | 413 | |
7cee5b31 | 414 | if (socketpair (fam, scm_to_int (style), scm_to_int (proto), fd) == -1) |
1bbd0b84 | 415 | SCM_SYSERROR; |
370312ae | 416 | |
439006bf | 417 | return scm_cons (SCM_SOCK_FD_TO_PORT (fd[0]), SCM_SOCK_FD_TO_PORT (fd[1])); |
0f2d19dd | 418 | } |
1bbd0b84 | 419 | #undef FUNC_NAME |
0e958795 | 420 | #endif |
0f2d19dd | 421 | |
f43f3620 LC |
422 | /* Possible results for `getsockopt ()'. Wrapping it into a union guarantees |
423 | suitable alignment. */ | |
424 | typedef union | |
425 | { | |
426 | #ifdef HAVE_STRUCT_LINGER | |
427 | struct linger linger; | |
428 | #endif | |
429 | size_t size; | |
430 | int integer; | |
431 | } scm_t_getsockopt_result; | |
432 | ||
a1ec6916 | 433 | SCM_DEFINE (scm_getsockopt, "getsockopt", 3, 0, 0, |
1bbd0b84 | 434 | (SCM sock, SCM level, SCM optname), |
72e3dae1 KR |
435 | "Return an option value from socket port @var{sock}.\n" |
436 | "\n" | |
437 | "@var{level} is an integer specifying a protocol layer, either\n" | |
438 | "@code{SOL_SOCKET} for socket level options, or a protocol\n" | |
439 | "number from the @code{IPPROTO} constants or @code{getprotoent}\n" | |
440 | "(@pxref{Network Databases}).\n" | |
441 | "\n" | |
442 | "@defvar SOL_SOCKET\n" | |
443 | "@defvarx IPPROTO_IP\n" | |
444 | "@defvarx IPPROTO_TCP\n" | |
445 | "@defvarx IPPROTO_UDP\n" | |
446 | "@end defvar\n" | |
447 | "\n" | |
448 | "@var{optname} is an integer specifying an option within the\n" | |
449 | "protocol layer.\n" | |
450 | "\n" | |
451 | "For @code{SOL_SOCKET} level the following @var{optname}s are\n" | |
452 | "defined (when provided by the system). For their meaning see\n" | |
453 | "@ref{Socket-Level Options,,, libc, The GNU C Library Reference\n" | |
454 | "Manual}, or @command{man 7 socket}.\n" | |
455 | "\n" | |
456 | "@defvar SO_DEBUG\n" | |
457 | "@defvarx SO_REUSEADDR\n" | |
458 | "@defvarx SO_STYLE\n" | |
459 | "@defvarx SO_TYPE\n" | |
460 | "@defvarx SO_ERROR\n" | |
461 | "@defvarx SO_DONTROUTE\n" | |
462 | "@defvarx SO_BROADCAST\n" | |
463 | "@defvarx SO_SNDBUF\n" | |
464 | "@defvarx SO_RCVBUF\n" | |
465 | "@defvarx SO_KEEPALIVE\n" | |
466 | "@defvarx SO_OOBINLINE\n" | |
467 | "@defvarx SO_NO_CHECK\n" | |
468 | "@defvarx SO_PRIORITY\n" | |
5f24f1b5 | 469 | "@defvarx SO_REUSEPORT\n" |
72e3dae1 KR |
470 | "The value returned is an integer.\n" |
471 | "@end defvar\n" | |
472 | "\n" | |
473 | "@defvar SO_LINGER\n" | |
b7e64f8b BT |
474 | "The value returned is a pair of integers\n" |
475 | "@code{(@var{enable} . @var{timeout})}. On old systems without\n" | |
72e3dae1 | 476 | "timeout support (ie.@: without @code{struct linger}), only\n" |
b7e64f8b | 477 | "@var{enable} has an effect but the value in Guile is always a\n" |
72e3dae1 KR |
478 | "pair.\n" |
479 | "@end defvar") | |
1bbd0b84 | 480 | #define FUNC_NAME s_scm_getsockopt |
0f2d19dd | 481 | { |
370312ae | 482 | int fd; |
439006bf | 483 | /* size of optval is the largest supported option. */ |
f43f3620 LC |
484 | scm_t_getsockopt_result optval; |
485 | socklen_t optlen = sizeof (optval); | |
370312ae GH |
486 | int ilevel; |
487 | int ioptname; | |
0f2d19dd | 488 | |
78446828 | 489 | sock = SCM_COERCE_OUTPORT (sock); |
2cf6d014 | 490 | SCM_VALIDATE_OPFPORT (1, sock); |
7cee5b31 MV |
491 | ilevel = scm_to_int (level); |
492 | ioptname = scm_to_int (optname); | |
0f2d19dd | 493 | |
ee149d03 | 494 | fd = SCM_FPORT_FDES (sock); |
f43f3620 | 495 | if (getsockopt (fd, ilevel, ioptname, (void *) &optval, &optlen) == -1) |
1bbd0b84 | 496 | SCM_SYSERROR; |
1cc91f1b | 497 | |
439006bf | 498 | if (ilevel == SOL_SOCKET) |
0f2d19dd | 499 | { |
439006bf GH |
500 | #ifdef SO_LINGER |
501 | if (ioptname == SO_LINGER) | |
502 | { | |
370312ae | 503 | #ifdef HAVE_STRUCT_LINGER |
f43f3620 | 504 | struct linger *ling = (struct linger *) &optval; |
439006bf | 505 | |
b9bd8526 MV |
506 | return scm_cons (scm_from_long (ling->l_onoff), |
507 | scm_from_long (ling->l_linger)); | |
370312ae | 508 | #else |
f43f3620 | 509 | return scm_cons (scm_from_long (*(int *) &optval), |
7cee5b31 | 510 | scm_from_int (0)); |
0f2d19dd | 511 | #endif |
439006bf GH |
512 | } |
513 | else | |
370312ae | 514 | #endif |
439006bf | 515 | if (0 |
370312ae | 516 | #ifdef SO_SNDBUF |
439006bf | 517 | || ioptname == SO_SNDBUF |
370312ae GH |
518 | #endif |
519 | #ifdef SO_RCVBUF | |
439006bf | 520 | || ioptname == SO_RCVBUF |
370312ae | 521 | #endif |
439006bf GH |
522 | ) |
523 | { | |
f43f3620 | 524 | return scm_from_size_t (*(size_t *) &optval); |
439006bf GH |
525 | } |
526 | } | |
f43f3620 | 527 | return scm_from_int (*(int *) &optval); |
0f2d19dd | 528 | } |
1bbd0b84 | 529 | #undef FUNC_NAME |
0f2d19dd | 530 | |
a1ec6916 | 531 | SCM_DEFINE (scm_setsockopt, "setsockopt", 4, 0, 0, |
1bbd0b84 | 532 | (SCM sock, SCM level, SCM optname, SCM value), |
72e3dae1 KR |
533 | "Set an option on socket port @var{sock}. The return value is\n" |
534 | "unspecified.\n" | |
535 | "\n" | |
536 | "@var{level} is an integer specifying a protocol layer, either\n" | |
537 | "@code{SOL_SOCKET} for socket level options, or a protocol\n" | |
538 | "number from the @code{IPPROTO} constants or @code{getprotoent}\n" | |
539 | "(@pxref{Network Databases}).\n" | |
540 | "\n" | |
541 | "@defvar SOL_SOCKET\n" | |
542 | "@defvarx IPPROTO_IP\n" | |
543 | "@defvarx IPPROTO_TCP\n" | |
544 | "@defvarx IPPROTO_UDP\n" | |
545 | "@end defvar\n" | |
546 | "\n" | |
547 | "@var{optname} is an integer specifying an option within the\n" | |
548 | "protocol layer.\n" | |
549 | "\n" | |
550 | "For @code{SOL_SOCKET} level the following @var{optname}s are\n" | |
551 | "defined (when provided by the system). For their meaning see\n" | |
552 | "@ref{Socket-Level Options,,, libc, The GNU C Library Reference\n" | |
553 | "Manual}, or @command{man 7 socket}.\n" | |
554 | "\n" | |
555 | "@defvar SO_DEBUG\n" | |
556 | "@defvarx SO_REUSEADDR\n" | |
557 | "@defvarx SO_STYLE\n" | |
558 | "@defvarx SO_TYPE\n" | |
559 | "@defvarx SO_ERROR\n" | |
560 | "@defvarx SO_DONTROUTE\n" | |
561 | "@defvarx SO_BROADCAST\n" | |
562 | "@defvarx SO_SNDBUF\n" | |
563 | "@defvarx SO_RCVBUF\n" | |
564 | "@defvarx SO_KEEPALIVE\n" | |
565 | "@defvarx SO_OOBINLINE\n" | |
566 | "@defvarx SO_NO_CHECK\n" | |
567 | "@defvarx SO_PRIORITY\n" | |
5f24f1b5 | 568 | "@defvarx SO_REUSEPORT\n" |
72e3dae1 KR |
569 | "@var{value} is an integer.\n" |
570 | "@end defvar\n" | |
571 | "\n" | |
572 | "@defvar SO_LINGER\n" | |
573 | "@var{value} is a pair of integers @code{(@var{ENABLE}\n" | |
574 | ". @var{TIMEOUT})}. On old systems without timeout support\n" | |
575 | "(ie.@: without @code{struct linger}), only @var{ENABLE} has an\n" | |
576 | "effect but the value in Guile is always a pair.\n" | |
577 | "@end defvar\n" | |
578 | "\n" | |
579 | "@c Note that we refer only to ``man ip'' here. On GNU/Linux it's\n" | |
580 | "@c ``man 7 ip'' but on NetBSD it's ``man 4 ip''.\n" | |
581 | "@c \n" | |
582 | "For IP level (@code{IPPROTO_IP}) the following @var{optname}s\n" | |
583 | "are defined (when provided by the system). See @command{man\n" | |
584 | "ip} for what they mean.\n" | |
585 | "\n" | |
511246a1 TCM |
586 | "@defvar IP_MULTICAST_IF\n" |
587 | "This sets the source interface used by multicast traffic.\n" | |
588 | "@end defvar\n" | |
589 | "\n" | |
590 | "@defvar IP_MULTICAST_TTL\n" | |
591 | "This sets the default TTL for multicast traffic. This defaults \n" | |
592 | "to 1 and should be increased to allow traffic to pass beyond the\n" | |
593 | "local network.\n" | |
594 | "@end defvar\n" | |
595 | "\n" | |
72e3dae1 KR |
596 | "@defvar IP_ADD_MEMBERSHIP\n" |
597 | "@defvarx IP_DROP_MEMBERSHIP\n" | |
598 | "These can be used only with @code{setsockopt}, not\n" | |
599 | "@code{getsockopt}. @var{value} is a pair\n" | |
600 | "@code{(@var{MULTIADDR} . @var{INTERFACEADDR})} of IPv4\n" | |
601 | "addresses (@pxref{Network Address Conversion}).\n" | |
602 | "@var{MULTIADDR} is a multicast address to be added to or\n" | |
603 | "dropped from the interface @var{INTERFACEADDR}.\n" | |
604 | "@var{INTERFACEADDR} can be @code{INADDR_ANY} to have the system\n" | |
605 | "select the interface. @var{INTERFACEADDR} can also be an\n" | |
f1b7209b KR |
606 | "interface index number, on systems supporting that.\n" |
607 | "@end defvar") | |
1bbd0b84 | 608 | #define FUNC_NAME s_scm_setsockopt |
0f2d19dd | 609 | { |
370312ae | 610 | int fd; |
1c80707c MV |
611 | |
612 | int opt_int; | |
370312ae | 613 | #ifdef HAVE_STRUCT_LINGER |
1c80707c | 614 | struct linger opt_linger; |
370312ae | 615 | #endif |
ecc9f40f | 616 | |
56a3dcd4 | 617 | #ifdef HAVE_STRUCT_IP_MREQ |
1c80707c | 618 | struct ip_mreq opt_mreq; |
ecc9f40f | 619 | #endif |
1c80707c MV |
620 | |
621 | const void *optval = NULL; | |
622 | socklen_t optlen = 0; | |
623 | ||
370312ae | 624 | int ilevel, ioptname; |
439006bf | 625 | |
78446828 | 626 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf GH |
627 | |
628 | SCM_VALIDATE_OPFPORT (1, sock); | |
7cee5b31 MV |
629 | ilevel = scm_to_int (level); |
630 | ioptname = scm_to_int (optname); | |
439006bf | 631 | |
ee149d03 | 632 | fd = SCM_FPORT_FDES (sock); |
1c80707c | 633 | |
439006bf | 634 | if (ilevel == SOL_SOCKET) |
370312ae | 635 | { |
439006bf GH |
636 | #ifdef SO_LINGER |
637 | if (ioptname == SO_LINGER) | |
638 | { | |
370312ae | 639 | #ifdef HAVE_STRUCT_LINGER |
d2e53ed6 | 640 | SCM_ASSERT (scm_is_pair (value), value, SCM_ARG4, FUNC_NAME); |
1c80707c MV |
641 | opt_linger.l_onoff = scm_to_int (SCM_CAR (value)); |
642 | opt_linger.l_linger = scm_to_int (SCM_CDR (value)); | |
643 | optlen = sizeof (struct linger); | |
644 | optval = &opt_linger; | |
370312ae | 645 | #else |
d2e53ed6 | 646 | SCM_ASSERT (scm_is_pair (value), value, SCM_ARG4, FUNC_NAME); |
1c80707c | 647 | opt_int = scm_to_int (SCM_CAR (value)); |
439006bf | 648 | /* timeout is ignored, but may as well validate it. */ |
1c80707c MV |
649 | scm_to_int (SCM_CDR (value)); |
650 | optlen = sizeof (int); | |
651 | optval = &opt_int; | |
439006bf GH |
652 | #endif |
653 | } | |
654 | else | |
655 | #endif | |
656 | if (0 | |
370312ae | 657 | #ifdef SO_SNDBUF |
439006bf | 658 | || ioptname == SO_SNDBUF |
370312ae GH |
659 | #endif |
660 | #ifdef SO_RCVBUF | |
439006bf | 661 | || ioptname == SO_RCVBUF |
370312ae | 662 | #endif |
439006bf GH |
663 | ) |
664 | { | |
1c80707c MV |
665 | opt_int = scm_to_int (value); |
666 | optlen = sizeof (size_t); | |
667 | optval = &opt_int; | |
439006bf GH |
668 | } |
669 | } | |
1c80707c | 670 | |
56a3dcd4 | 671 | #ifdef HAVE_STRUCT_IP_MREQ |
1c80707c MV |
672 | if (ilevel == IPPROTO_IP && |
673 | (ioptname == IP_ADD_MEMBERSHIP || ioptname == IP_DROP_MEMBERSHIP)) | |
0f2d19dd | 674 | { |
1c80707c MV |
675 | /* Fourth argument must be a pair of addresses. */ |
676 | SCM_ASSERT (scm_is_pair (value), value, SCM_ARG4, FUNC_NAME); | |
677 | opt_mreq.imr_multiaddr.s_addr = htonl (scm_to_ulong (SCM_CAR (value))); | |
678 | opt_mreq.imr_interface.s_addr = htonl (scm_to_ulong (SCM_CDR (value))); | |
679 | optlen = sizeof (opt_mreq); | |
680 | optval = &opt_mreq; | |
681 | } | |
ecc9f40f | 682 | #endif |
439006bf | 683 | |
1c80707c MV |
684 | if (optval == NULL) |
685 | { | |
686 | /* Most options take an int. */ | |
687 | opt_int = scm_to_int (value); | |
688 | optlen = sizeof (int); | |
689 | optval = &opt_int; | |
0f2d19dd | 690 | } |
1c80707c MV |
691 | |
692 | if (setsockopt (fd, ilevel, ioptname, optval, optlen) == -1) | |
1bbd0b84 | 693 | SCM_SYSERROR; |
370312ae | 694 | return SCM_UNSPECIFIED; |
0f2d19dd | 695 | } |
1bbd0b84 | 696 | #undef FUNC_NAME |
0f2d19dd | 697 | |
cc948107 LC |
698 | /* Our documentation hard-codes this mapping, so make sure it holds. */ |
699 | verify (SHUT_RD == 0); | |
700 | verify (SHUT_WR == 1); | |
701 | verify (SHUT_RDWR == 2); | |
702 | ||
a1ec6916 | 703 | SCM_DEFINE (scm_shutdown, "shutdown", 2, 0, 0, |
1bbd0b84 | 704 | (SCM sock, SCM how), |
b380b885 | 705 | "Sockets can be closed simply by using @code{close-port}. The\n" |
bb2c02f2 | 706 | "@code{shutdown} procedure allows reception or transmission on a\n" |
b380b885 MD |
707 | "connection to be shut down individually, according to the parameter\n" |
708 | "@var{how}:\n\n" | |
709 | "@table @asis\n" | |
710 | "@item 0\n" | |
711 | "Stop receiving data for this socket. If further data arrives, reject it.\n" | |
712 | "@item 1\n" | |
713 | "Stop trying to transmit data from this socket. Discard any\n" | |
714 | "data waiting to be sent. Stop looking for acknowledgement of\n" | |
715 | "data already sent; don't retransmit it if it is lost.\n" | |
716 | "@item 2\n" | |
717 | "Stop both reception and transmission.\n" | |
718 | "@end table\n\n" | |
719 | "The return value is unspecified.") | |
1bbd0b84 | 720 | #define FUNC_NAME s_scm_shutdown |
0f2d19dd | 721 | { |
370312ae | 722 | int fd; |
78446828 | 723 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 724 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 725 | fd = SCM_FPORT_FDES (sock); |
7cee5b31 | 726 | if (shutdown (fd, scm_to_signed_integer (how, 0, 2)) == -1) |
1bbd0b84 | 727 | SCM_SYSERROR; |
370312ae GH |
728 | return SCM_UNSPECIFIED; |
729 | } | |
1bbd0b84 | 730 | #undef FUNC_NAME |
0f2d19dd | 731 | |
370312ae GH |
732 | /* convert fam/address/args into a sockaddr of the appropriate type. |
733 | args is modified by removing the arguments actually used. | |
734 | which_arg and proc are used when reporting errors: | |
735 | which_arg is the position of address in the original argument list. | |
736 | proc is the name of the original procedure. | |
737 | size returns the size of the structure allocated. */ | |
738 | ||
bc732342 | 739 | static struct sockaddr * |
439006bf | 740 | scm_fill_sockaddr (int fam, SCM address, SCM *args, int which_arg, |
9c0129ac | 741 | const char *proc, size_t *size) |
3453619b | 742 | #define FUNC_NAME proc |
370312ae GH |
743 | { |
744 | switch (fam) | |
0f2d19dd | 745 | { |
370312ae GH |
746 | case AF_INET: |
747 | { | |
370312ae | 748 | struct sockaddr_in *soka; |
3453619b GH |
749 | unsigned long addr; |
750 | int port; | |
370312ae | 751 | |
3453619b GH |
752 | SCM_VALIDATE_ULONG_COPY (which_arg, address, addr); |
753 | SCM_VALIDATE_CONS (which_arg + 1, *args); | |
7cee5b31 | 754 | port = scm_to_int (SCM_CAR (*args)); |
3453619b | 755 | *args = SCM_CDR (*args); |
67329a9e | 756 | soka = (struct sockaddr_in *) scm_malloc (sizeof (struct sockaddr_in)); |
333a81cc | 757 | memset (soka, '\0', sizeof (struct sockaddr_in)); |
9c0129ac | 758 | |
482d311b | 759 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
3453619b GH |
760 | soka->sin_len = sizeof (struct sockaddr_in); |
761 | #endif | |
370312ae | 762 | soka->sin_family = AF_INET; |
3453619b GH |
763 | soka->sin_addr.s_addr = htonl (addr); |
764 | soka->sin_port = htons (port); | |
370312ae GH |
765 | *size = sizeof (struct sockaddr_in); |
766 | return (struct sockaddr *) soka; | |
767 | } | |
a57a0b1e | 768 | #ifdef HAVE_IPV6 |
3453619b GH |
769 | case AF_INET6: |
770 | { | |
771 | /* see RFC2553. */ | |
772 | int port; | |
773 | struct sockaddr_in6 *soka; | |
774 | unsigned long flowinfo = 0; | |
775 | unsigned long scope_id = 0; | |
776 | ||
3453619b | 777 | SCM_VALIDATE_CONS (which_arg + 1, *args); |
7cee5b31 | 778 | port = scm_to_int (SCM_CAR (*args)); |
3453619b | 779 | *args = SCM_CDR (*args); |
d2e53ed6 | 780 | if (scm_is_pair (*args)) |
3453619b GH |
781 | { |
782 | SCM_VALIDATE_ULONG_COPY (which_arg + 2, SCM_CAR (*args), flowinfo); | |
783 | *args = SCM_CDR (*args); | |
d2e53ed6 | 784 | if (scm_is_pair (*args)) |
3453619b GH |
785 | { |
786 | SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args), | |
787 | scope_id); | |
788 | *args = SCM_CDR (*args); | |
789 | } | |
790 | } | |
67329a9e | 791 | soka = (struct sockaddr_in6 *) scm_malloc (sizeof (struct sockaddr_in6)); |
9c0129ac | 792 | |
56a3dcd4 | 793 | #ifdef HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN |
3453619b GH |
794 | soka->sin6_len = sizeof (struct sockaddr_in6); |
795 | #endif | |
796 | soka->sin6_family = AF_INET6; | |
7cee5b31 | 797 | scm_to_ipv6 (soka->sin6_addr.s6_addr, address); |
5a525b84 | 798 | soka->sin6_port = htons (port); |
3453619b | 799 | soka->sin6_flowinfo = flowinfo; |
5a525b84 | 800 | #ifdef HAVE_SIN6_SCOPE_ID |
3453619b | 801 | soka->sin6_scope_id = scope_id; |
5a525b84 | 802 | #endif |
3453619b GH |
803 | *size = sizeof (struct sockaddr_in6); |
804 | return (struct sockaddr *) soka; | |
805 | } | |
806 | #endif | |
1ba8c23a | 807 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
370312ae GH |
808 | case AF_UNIX: |
809 | { | |
810 | struct sockaddr_un *soka; | |
439006bf | 811 | int addr_size; |
7f9994d9 MV |
812 | char *c_address; |
813 | ||
661ae7ab | 814 | scm_dynwind_begin (0); |
7f9994d9 MV |
815 | |
816 | c_address = scm_to_locale_string (address); | |
661ae7ab | 817 | scm_dynwind_free (c_address); |
370312ae | 818 | |
439006bf GH |
819 | /* the static buffer size in sockaddr_un seems to be arbitrary |
820 | and not necessarily a hard limit. e.g., the glibc manual | |
821 | suggests it may be possible to declare it size 0. let's | |
822 | ignore it. if the O/S doesn't like the size it will cause | |
823 | connect/bind etc., to fail. sun_path is always the last | |
824 | member of the structure. */ | |
825 | addr_size = sizeof (struct sockaddr_un) | |
7f9994d9 | 826 | + max (0, strlen (c_address) + 1 - (sizeof soka->sun_path)); |
67329a9e | 827 | soka = (struct sockaddr_un *) scm_malloc (addr_size); |
439006bf GH |
828 | memset (soka, 0, addr_size); /* for sun_len: see sin_len above. */ |
829 | soka->sun_family = AF_UNIX; | |
7f9994d9 | 830 | strcpy (soka->sun_path, c_address); |
439006bf | 831 | *size = SUN_LEN (soka); |
7f9994d9 | 832 | |
661ae7ab | 833 | scm_dynwind_end (); |
370312ae GH |
834 | return (struct sockaddr *) soka; |
835 | } | |
0e958795 | 836 | #endif |
370312ae | 837 | default: |
e11e83f3 | 838 | scm_out_of_range (proc, scm_from_int (fam)); |
0f2d19dd | 839 | } |
0f2d19dd | 840 | } |
3453619b | 841 | #undef FUNC_NAME |
9c0129ac KR |
842 | |
843 | SCM_DEFINE (scm_connect, "connect", 2, 1, 1, | |
844 | (SCM sock, SCM fam_or_sockaddr, SCM address, SCM args), | |
eefae538 | 845 | "Initiate a connection from a socket using a specified address\n" |
3453619b GH |
846 | "family to the address\n" |
847 | "specified by @var{address} and possibly @var{args}.\n" | |
848 | "The format required for @var{address}\n" | |
849 | "and @var{args} depends on the family of the socket.\n\n" | |
b380b885 | 850 | "For a socket of family @code{AF_UNIX},\n" |
3453619b | 851 | "only @var{address} is specified and must be a string with the\n" |
b380b885 MD |
852 | "filename where the socket is to be created.\n\n" |
853 | "For a socket of family @code{AF_INET},\n" | |
3453619b GH |
854 | "@var{address} must be an integer IPv4 host address and\n" |
855 | "@var{args} must be a single integer port number.\n\n" | |
856 | "For a socket of family @code{AF_INET6},\n" | |
857 | "@var{address} must be an integer IPv6 host address and\n" | |
858 | "@var{args} may be up to three integers:\n" | |
859 | "port [flowinfo] [scope_id],\n" | |
860 | "where flowinfo and scope_id default to zero.\n\n" | |
9c0129ac KR |
861 | "Alternatively, the second argument can be a socket address object " |
862 | "as returned by @code{make-socket-address}, in which case the " | |
863 | "no additional arguments should be passed.\n\n" | |
b380b885 | 864 | "The return value is unspecified.") |
1bbd0b84 | 865 | #define FUNC_NAME s_scm_connect |
0f2d19dd | 866 | { |
370312ae GH |
867 | int fd; |
868 | struct sockaddr *soka; | |
9c0129ac | 869 | size_t size; |
0f2d19dd | 870 | |
78446828 | 871 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 872 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 873 | fd = SCM_FPORT_FDES (sock); |
9c0129ac | 874 | |
d223c3fc | 875 | if (scm_is_eq (address, SCM_UNDEFINED)) |
9c0129ac KR |
876 | /* No third argument was passed to FAM_OR_SOCKADDR must actually be a |
877 | `socket address' object. */ | |
878 | soka = scm_to_sockaddr (fam_or_sockaddr, &size); | |
879 | else | |
880 | soka = scm_fill_sockaddr (scm_to_int (fam_or_sockaddr), address, | |
881 | &args, 3, FUNC_NAME, &size); | |
882 | ||
370312ae | 883 | if (connect (fd, soka, size) == -1) |
439006bf GH |
884 | { |
885 | int save_errno = errno; | |
9c0129ac | 886 | |
439006bf GH |
887 | free (soka); |
888 | errno = save_errno; | |
889 | SCM_SYSERROR; | |
890 | } | |
891 | free (soka); | |
370312ae | 892 | return SCM_UNSPECIFIED; |
0f2d19dd | 893 | } |
1bbd0b84 | 894 | #undef FUNC_NAME |
0f2d19dd | 895 | |
9c0129ac KR |
896 | SCM_DEFINE (scm_bind, "bind", 2, 1, 1, |
897 | (SCM sock, SCM fam_or_sockaddr, SCM address, SCM args), | |
eefae538 | 898 | "Assign an address to the socket port @var{sock}.\n" |
b380b885 MD |
899 | "Generally this only needs to be done for server sockets,\n" |
900 | "so they know where to look for incoming connections. A socket\n" | |
901 | "without an address will be assigned one automatically when it\n" | |
902 | "starts communicating.\n\n" | |
eefae538 GH |
903 | "The format of @var{address} and @var{args} depends\n" |
904 | "on the family of the socket.\n\n" | |
b380b885 | 905 | "For a socket of family @code{AF_UNIX}, only @var{address}\n" |
eefae538 GH |
906 | "is specified and must be a string with the filename where\n" |
907 | "the socket is to be created.\n\n" | |
908 | "For a socket of family @code{AF_INET}, @var{address}\n" | |
909 | "must be an integer IPv4 address and @var{args}\n" | |
910 | "must be a single integer port number.\n\n" | |
911 | "The values of the following variables can also be used for\n" | |
912 | "@var{address}:\n\n" | |
b380b885 MD |
913 | "@defvar INADDR_ANY\n" |
914 | "Allow connections from any address.\n" | |
915 | "@end defvar\n\n" | |
916 | "@defvar INADDR_LOOPBACK\n" | |
917 | "The address of the local host using the loopback device.\n" | |
918 | "@end defvar\n\n" | |
919 | "@defvar INADDR_BROADCAST\n" | |
920 | "The broadcast address on the local network.\n" | |
921 | "@end defvar\n\n" | |
922 | "@defvar INADDR_NONE\n" | |
923 | "No address.\n" | |
924 | "@end defvar\n\n" | |
eefae538 GH |
925 | "For a socket of family @code{AF_INET6}, @var{address}\n" |
926 | "must be an integer IPv6 address and @var{args}\n" | |
927 | "may be up to three integers:\n" | |
928 | "port [flowinfo] [scope_id],\n" | |
929 | "where flowinfo and scope_id default to zero.\n\n" | |
9c0129ac KR |
930 | "Alternatively, the second argument can be a socket address object " |
931 | "as returned by @code{make-socket-address}, in which case the " | |
932 | "no additional arguments should be passed.\n\n" | |
b380b885 | 933 | "The return value is unspecified.") |
1bbd0b84 | 934 | #define FUNC_NAME s_scm_bind |
370312ae | 935 | { |
370312ae | 936 | struct sockaddr *soka; |
9c0129ac | 937 | size_t size; |
370312ae GH |
938 | int fd; |
939 | ||
78446828 | 940 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf | 941 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 942 | fd = SCM_FPORT_FDES (sock); |
9c0129ac | 943 | |
d223c3fc | 944 | if (scm_is_eq (address, SCM_UNDEFINED)) |
9c0129ac KR |
945 | /* No third argument was passed to FAM_OR_SOCKADDR must actually be a |
946 | `socket address' object. */ | |
947 | soka = scm_to_sockaddr (fam_or_sockaddr, &size); | |
948 | else | |
949 | soka = scm_fill_sockaddr (scm_to_int (fam_or_sockaddr), address, | |
950 | &args, 3, FUNC_NAME, &size); | |
951 | ||
952 | ||
439006bf GH |
953 | if (bind (fd, soka, size) == -1) |
954 | { | |
955 | int save_errno = errno; | |
9c0129ac | 956 | |
439006bf GH |
957 | free (soka); |
958 | errno = save_errno; | |
1bbd0b84 | 959 | SCM_SYSERROR; |
439006bf GH |
960 | } |
961 | free (soka); | |
370312ae GH |
962 | return SCM_UNSPECIFIED; |
963 | } | |
1bbd0b84 | 964 | #undef FUNC_NAME |
370312ae | 965 | |
a1ec6916 | 966 | SCM_DEFINE (scm_listen, "listen", 2, 0, 0, |
1bbd0b84 | 967 | (SCM sock, SCM backlog), |
eefae538 | 968 | "Enable @var{sock} to accept connection\n" |
b380b885 MD |
969 | "requests. @var{backlog} is an integer specifying\n" |
970 | "the maximum length of the queue for pending connections.\n" | |
eefae538 GH |
971 | "If the queue fills, new clients will fail to connect until\n" |
972 | "the server calls @code{accept} to accept a connection from\n" | |
973 | "the queue.\n\n" | |
b380b885 | 974 | "The return value is unspecified.") |
1bbd0b84 | 975 | #define FUNC_NAME s_scm_listen |
370312ae GH |
976 | { |
977 | int fd; | |
78446828 | 978 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 979 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 980 | fd = SCM_FPORT_FDES (sock); |
7cee5b31 | 981 | if (listen (fd, scm_to_int (backlog)) == -1) |
1bbd0b84 | 982 | SCM_SYSERROR; |
370312ae GH |
983 | return SCM_UNSPECIFIED; |
984 | } | |
1bbd0b84 | 985 | #undef FUNC_NAME |
370312ae GH |
986 | |
987 | /* Put the components of a sockaddr into a new SCM vector. */ | |
9c0129ac | 988 | static SCM_C_INLINE_KEYWORD SCM |
f43f3620 LC |
989 | _scm_from_sockaddr (const scm_t_max_sockaddr *address, unsigned addr_size, |
990 | const char *proc) | |
0f2d19dd | 991 | { |
f43f3620 LC |
992 | SCM result = SCM_EOL; |
993 | short int fam = ((struct sockaddr *) address)->sa_family; | |
439006bf | 994 | |
5a525b84 | 995 | switch (fam) |
0f2d19dd | 996 | { |
5a525b84 GH |
997 | case AF_INET: |
998 | { | |
e1368a8d | 999 | const struct sockaddr_in *nad = (struct sockaddr_in *) address; |
439006bf | 1000 | |
1d1559ce | 1001 | result = scm_c_make_vector (3, SCM_UNSPECIFIED); |
34d19ef6 | 1002 | |
4057a3e0 MV |
1003 | SCM_SIMPLE_VECTOR_SET(result, 0, |
1004 | scm_from_short (fam)); | |
1005 | SCM_SIMPLE_VECTOR_SET(result, 1, | |
1006 | scm_from_ulong (ntohl (nad->sin_addr.s_addr))); | |
1007 | SCM_SIMPLE_VECTOR_SET(result, 2, | |
1008 | scm_from_ushort (ntohs (nad->sin_port))); | |
5a525b84 GH |
1009 | } |
1010 | break; | |
a57a0b1e | 1011 | #ifdef HAVE_IPV6 |
5a525b84 GH |
1012 | case AF_INET6: |
1013 | { | |
e1368a8d | 1014 | const struct sockaddr_in6 *nad = (struct sockaddr_in6 *) address; |
5a525b84 | 1015 | |
1d1559ce | 1016 | result = scm_c_make_vector (5, SCM_UNSPECIFIED); |
4057a3e0 MV |
1017 | SCM_SIMPLE_VECTOR_SET(result, 0, scm_from_short (fam)); |
1018 | SCM_SIMPLE_VECTOR_SET(result, 1, scm_from_ipv6 (nad->sin6_addr.s6_addr)); | |
1019 | SCM_SIMPLE_VECTOR_SET(result, 2, scm_from_ushort (ntohs (nad->sin6_port))); | |
1020 | SCM_SIMPLE_VECTOR_SET(result, 3, scm_from_uint32 (nad->sin6_flowinfo)); | |
5a525b84 | 1021 | #ifdef HAVE_SIN6_SCOPE_ID |
4057a3e0 | 1022 | SCM_SIMPLE_VECTOR_SET(result, 4, scm_from_ulong (nad->sin6_scope_id)); |
5a525b84 | 1023 | #else |
4057a3e0 | 1024 | SCM_SIMPLE_VECTOR_SET(result, 4, SCM_INUM0); |
0e958795 | 1025 | #endif |
5a525b84 GH |
1026 | } |
1027 | break; | |
1028 | #endif | |
1029 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS | |
1030 | case AF_UNIX: | |
1031 | { | |
e1368a8d | 1032 | const struct sockaddr_un *nad = (struct sockaddr_un *) address; |
439006bf | 1033 | |
1d1559ce | 1034 | result = scm_c_make_vector (2, SCM_UNSPECIFIED); |
34d19ef6 | 1035 | |
4057a3e0 | 1036 | SCM_SIMPLE_VECTOR_SET(result, 0, scm_from_short (fam)); |
aca23b65 MV |
1037 | /* When addr_size is not enough to cover sun_path, do not try |
1038 | to access it. */ | |
1039 | if (addr_size <= offsetof (struct sockaddr_un, sun_path)) | |
4057a3e0 | 1040 | SCM_SIMPLE_VECTOR_SET(result, 1, SCM_BOOL_F); |
aca23b65 | 1041 | else |
4057a3e0 | 1042 | SCM_SIMPLE_VECTOR_SET(result, 1, scm_from_locale_string (nad->sun_path)); |
5a525b84 GH |
1043 | } |
1044 | break; | |
1045 | #endif | |
1046 | default: | |
9c0129ac KR |
1047 | result = SCM_UNSPECIFIED; |
1048 | scm_misc_error (proc, "unrecognised address family: ~A", | |
e11e83f3 | 1049 | scm_list_1 (scm_from_int (fam))); |
9c0129ac | 1050 | |
0f2d19dd | 1051 | } |
1d1559ce | 1052 | return result; |
370312ae GH |
1053 | } |
1054 | ||
9c0129ac KR |
1055 | /* The publicly-visible function. Return a Scheme object representing |
1056 | ADDRESS, an address of ADDR_SIZE bytes. */ | |
1057 | SCM | |
1058 | scm_from_sockaddr (const struct sockaddr *address, unsigned addr_size) | |
1059 | { | |
f43f3620 LC |
1060 | return (_scm_from_sockaddr ((scm_t_max_sockaddr *) address, |
1061 | addr_size, "scm_from_sockaddr")); | |
9c0129ac KR |
1062 | } |
1063 | ||
1064 | /* Convert ADDRESS, an address object returned by either | |
1065 | `scm_from_sockaddr ()' or `scm_make_socket_address ()', into its C | |
1066 | representation. On success, a non-NULL pointer is returned and | |
1067 | ADDRESS_SIZE is updated to the actual size (in bytes) of the returned | |
1068 | address. The result must eventually be freed using `free ()'. */ | |
1069 | struct sockaddr * | |
1070 | scm_to_sockaddr (SCM address, size_t *address_size) | |
1071 | #define FUNC_NAME "scm_to_sockaddr" | |
1072 | { | |
1073 | short int family; | |
1074 | struct sockaddr *c_address = NULL; | |
1075 | ||
1076 | SCM_VALIDATE_VECTOR (1, address); | |
1077 | ||
1078 | *address_size = 0; | |
1079 | family = scm_to_short (SCM_SIMPLE_VECTOR_REF (address, 0)); | |
1080 | ||
1081 | switch (family) | |
1082 | { | |
1083 | case AF_INET: | |
1084 | { | |
1085 | if (SCM_SIMPLE_VECTOR_LENGTH (address) != 3) | |
1086 | scm_misc_error (FUNC_NAME, | |
1087 | "invalid inet address representation: ~A", | |
1088 | scm_list_1 (address)); | |
1089 | else | |
1090 | { | |
1091 | struct sockaddr_in c_inet; | |
1092 | ||
333a81cc NL |
1093 | memset (&c_inet, '\0', sizeof (struct sockaddr_in)); |
1094 | ||
482d311b NL |
1095 | #ifdef HAVE_STRUCT_SOCKADDR_IN_SIN_LEN |
1096 | c_inet.sin_len = sizeof (struct sockaddr_in); | |
1097 | #endif | |
1098 | ||
9c0129ac KR |
1099 | c_inet.sin_addr.s_addr = |
1100 | htonl (scm_to_ulong (SCM_SIMPLE_VECTOR_REF (address, 1))); | |
1101 | c_inet.sin_port = | |
1102 | htons (scm_to_ushort (SCM_SIMPLE_VECTOR_REF (address, 2))); | |
1103 | c_inet.sin_family = AF_INET; | |
1104 | ||
1105 | *address_size = sizeof (c_inet); | |
1106 | c_address = scm_malloc (sizeof (c_inet)); | |
1107 | memcpy (c_address, &c_inet, sizeof (c_inet)); | |
1108 | } | |
1109 | ||
1110 | break; | |
1111 | } | |
1112 | ||
1113 | #ifdef HAVE_IPV6 | |
1114 | case AF_INET6: | |
1115 | { | |
1116 | if (SCM_SIMPLE_VECTOR_LENGTH (address) != 5) | |
1117 | scm_misc_error (FUNC_NAME, "invalid inet6 address representation: ~A", | |
1118 | scm_list_1 (address)); | |
1119 | else | |
1120 | { | |
1121 | struct sockaddr_in6 c_inet6; | |
1122 | ||
1ff4da65 NJ |
1123 | scm_to_ipv6 (c_inet6.sin6_addr.s6_addr, |
1124 | SCM_SIMPLE_VECTOR_REF (address, 1)); | |
9c0129ac KR |
1125 | c_inet6.sin6_port = |
1126 | htons (scm_to_ushort (SCM_SIMPLE_VECTOR_REF (address, 2))); | |
1127 | c_inet6.sin6_flowinfo = | |
1128 | scm_to_uint32 (SCM_SIMPLE_VECTOR_REF (address, 3)); | |
1129 | #ifdef HAVE_SIN6_SCOPE_ID | |
1130 | c_inet6.sin6_scope_id = | |
1131 | scm_to_ulong (SCM_SIMPLE_VECTOR_REF (address, 4)); | |
1132 | #endif | |
1133 | ||
1134 | c_inet6.sin6_family = AF_INET6; | |
1135 | ||
1136 | *address_size = sizeof (c_inet6); | |
1137 | c_address = scm_malloc (sizeof (c_inet6)); | |
1138 | memcpy (c_address, &c_inet6, sizeof (c_inet6)); | |
1139 | } | |
1140 | ||
1141 | break; | |
1142 | } | |
1143 | #endif | |
1144 | ||
1145 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS | |
1146 | case AF_UNIX: | |
1147 | { | |
1148 | if (SCM_SIMPLE_VECTOR_LENGTH (address) != 2) | |
1149 | scm_misc_error (FUNC_NAME, "invalid unix address representation: ~A", | |
1150 | scm_list_1 (address)); | |
1151 | else | |
1152 | { | |
1153 | SCM path; | |
1154 | size_t path_len = 0; | |
1155 | ||
1156 | path = SCM_SIMPLE_VECTOR_REF (address, 1); | |
393baa8a | 1157 | if (!scm_is_string (path) && !scm_is_false (path)) |
9c0129ac KR |
1158 | scm_misc_error (FUNC_NAME, "invalid unix address " |
1159 | "path: ~A", scm_list_1 (path)); | |
1160 | else | |
1161 | { | |
1162 | struct sockaddr_un c_unix; | |
1163 | ||
393baa8a | 1164 | if (scm_is_false (path)) |
9c0129ac KR |
1165 | path_len = 0; |
1166 | else | |
1167 | path_len = scm_c_string_length (path); | |
1168 | ||
1169 | #ifdef UNIX_PATH_MAX | |
1170 | if (path_len >= UNIX_PATH_MAX) | |
1171 | #else | |
1172 | /* We can hope that this limit will eventually vanish, at least on GNU. | |
1173 | However, currently, while glibc doesn't define `UNIX_PATH_MAX', it | |
1174 | documents it has being limited to 108 bytes. */ | |
1175 | if (path_len >= sizeof (c_unix.sun_path)) | |
1176 | #endif | |
1177 | scm_misc_error (FUNC_NAME, "unix address path " | |
1178 | "too long: ~A", scm_list_1 (path)); | |
1179 | else | |
1180 | { | |
1181 | if (path_len) | |
1182 | { | |
1183 | scm_to_locale_stringbuf (path, c_unix.sun_path, | |
1184 | #ifdef UNIX_PATH_MAX | |
1185 | UNIX_PATH_MAX); | |
1186 | #else | |
1187 | sizeof (c_unix.sun_path)); | |
1188 | #endif | |
1189 | c_unix.sun_path[path_len] = '\0'; | |
1190 | ||
1191 | /* Sanity check. */ | |
1192 | if (strlen (c_unix.sun_path) != path_len) | |
1193 | scm_misc_error (FUNC_NAME, "unix address path " | |
1194 | "contains nul characters: ~A", | |
1195 | scm_list_1 (path)); | |
1196 | } | |
1197 | else | |
1198 | c_unix.sun_path[0] = '\0'; | |
1199 | ||
1200 | c_unix.sun_family = AF_UNIX; | |
1201 | ||
1202 | *address_size = SUN_LEN (&c_unix); | |
1203 | c_address = scm_malloc (sizeof (c_unix)); | |
1204 | memcpy (c_address, &c_unix, sizeof (c_unix)); | |
1205 | } | |
1206 | } | |
1207 | } | |
1208 | ||
1209 | break; | |
1210 | } | |
1211 | #endif | |
1212 | ||
1213 | default: | |
1214 | scm_misc_error (FUNC_NAME, "unrecognised address family: ~A", | |
1215 | scm_list_1 (scm_from_ushort (family))); | |
1216 | } | |
1217 | ||
1218 | return c_address; | |
1219 | } | |
1220 | #undef FUNC_NAME | |
1221 | ||
1222 | ||
1223 | /* Return a newly-allocated `sockaddr' structure that reflects ADDRESS, being | |
1224 | an address of family FAMILY, with the family-specific parameters ARGS (see | |
1225 | the description of `connect' for details). The returned structure may be | |
1226 | freed using `free ()'. */ | |
1227 | struct sockaddr * | |
1228 | scm_c_make_socket_address (SCM family, SCM address, SCM args, | |
1229 | size_t *address_size) | |
1230 | { | |
9c0129ac KR |
1231 | struct sockaddr *soka; |
1232 | ||
1233 | soka = scm_fill_sockaddr (scm_to_ushort (family), address, &args, 1, | |
d7c6575f | 1234 | "scm_c_make_socket_address", address_size); |
9c0129ac KR |
1235 | |
1236 | return soka; | |
1237 | } | |
1238 | ||
1239 | SCM_DEFINE (scm_make_socket_address, "make-socket-address", 2, 0, 1, | |
1240 | (SCM family, SCM address, SCM args), | |
1241 | "Return a Scheme address object that reflects @var{address}, " | |
1242 | "being an address of family @var{family}, with the " | |
1243 | "family-specific parameters @var{args} (see the description of " | |
1244 | "@code{connect} for details).") | |
1245 | #define FUNC_NAME s_scm_make_socket_address | |
1246 | { | |
1ac5fb45 | 1247 | SCM result = SCM_BOOL_F; |
9c0129ac KR |
1248 | struct sockaddr *c_address; |
1249 | size_t c_address_size; | |
1250 | ||
1251 | c_address = scm_c_make_socket_address (family, address, args, | |
1252 | &c_address_size); | |
1ac5fb45 LC |
1253 | if (c_address != NULL) |
1254 | { | |
1255 | result = scm_from_sockaddr (c_address, c_address_size); | |
1256 | free (c_address); | |
1257 | } | |
9c0129ac | 1258 | |
1ac5fb45 | 1259 | return result; |
9c0129ac KR |
1260 | } |
1261 | #undef FUNC_NAME | |
1262 | ||
1263 | \f | |
a1ec6916 | 1264 | SCM_DEFINE (scm_accept, "accept", 1, 0, 0, |
1bbd0b84 | 1265 | (SCM sock), |
eefae538 GH |
1266 | "Accept a connection on a bound, listening socket.\n" |
1267 | "If there\n" | |
1268 | "are no pending connections in the queue, wait until\n" | |
1269 | "one is available unless the non-blocking option has been\n" | |
1270 | "set on the socket.\n\n" | |
b380b885 | 1271 | "The return value is a\n" |
eefae538 GH |
1272 | "pair in which the @emph{car} is a new socket port for the\n" |
1273 | "connection and\n" | |
1274 | "the @emph{cdr} is an object with address information about the\n" | |
1275 | "client which initiated the connection.\n\n" | |
1276 | "@var{sock} does not become part of the\n" | |
b380b885 | 1277 | "connection and will continue to accept new requests.") |
1bbd0b84 | 1278 | #define FUNC_NAME s_scm_accept |
0f2d19dd | 1279 | { |
e68e0369 | 1280 | int fd; |
370312ae GH |
1281 | int newfd; |
1282 | SCM address; | |
1283 | SCM newsock; | |
5ee417fc | 1284 | socklen_t addr_size = MAX_ADDR_SIZE; |
f43f3620 | 1285 | scm_t_max_sockaddr addr; |
370312ae | 1286 | |
78446828 | 1287 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf | 1288 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 1289 | fd = SCM_FPORT_FDES (sock); |
032a16fc | 1290 | SCM_SYSCALL (newfd = accept (fd, (struct sockaddr *) &addr, &addr_size)); |
439006bf GH |
1291 | if (newfd == -1) |
1292 | SCM_SYSERROR; | |
1293 | newsock = SCM_SOCK_FD_TO_PORT (newfd); | |
f43f3620 LC |
1294 | address = _scm_from_sockaddr (&addr, addr_size, |
1295 | FUNC_NAME); | |
1296 | ||
370312ae | 1297 | return scm_cons (newsock, address); |
0f2d19dd | 1298 | } |
1bbd0b84 | 1299 | #undef FUNC_NAME |
0f2d19dd | 1300 | |
a1ec6916 | 1301 | SCM_DEFINE (scm_getsockname, "getsockname", 1, 0, 0, |
1bbd0b84 | 1302 | (SCM sock), |
eefae538 | 1303 | "Return the address of @var{sock}, in the same form as the\n" |
1e6808ea MG |
1304 | "object returned by @code{accept}. On many systems the address\n" |
1305 | "of a socket in the @code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 1306 | #define FUNC_NAME s_scm_getsockname |
0f2d19dd | 1307 | { |
370312ae | 1308 | int fd; |
5ee417fc | 1309 | socklen_t addr_size = MAX_ADDR_SIZE; |
f43f3620 | 1310 | scm_t_max_sockaddr addr; |
439006bf | 1311 | |
78446828 | 1312 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1313 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 1314 | fd = SCM_FPORT_FDES (sock); |
f43f3620 | 1315 | if (getsockname (fd, (struct sockaddr *) &addr, &addr_size) == -1) |
1bbd0b84 | 1316 | SCM_SYSERROR; |
f43f3620 LC |
1317 | |
1318 | return _scm_from_sockaddr (&addr, addr_size, FUNC_NAME); | |
0f2d19dd | 1319 | } |
1bbd0b84 | 1320 | #undef FUNC_NAME |
0f2d19dd | 1321 | |
a1ec6916 | 1322 | SCM_DEFINE (scm_getpeername, "getpeername", 1, 0, 0, |
1bbd0b84 | 1323 | (SCM sock), |
eefae538 | 1324 | "Return the address that @var{sock}\n" |
1e6808ea MG |
1325 | "is connected to, in the same form as the object returned by\n" |
1326 | "@code{accept}. On many systems the address of a socket in the\n" | |
1327 | "@code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 1328 | #define FUNC_NAME s_scm_getpeername |
0f2d19dd | 1329 | { |
370312ae | 1330 | int fd; |
5ee417fc | 1331 | socklen_t addr_size = MAX_ADDR_SIZE; |
f43f3620 | 1332 | scm_t_max_sockaddr addr; |
439006bf | 1333 | |
78446828 | 1334 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1335 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 1336 | fd = SCM_FPORT_FDES (sock); |
f43f3620 | 1337 | if (getpeername (fd, (struct sockaddr *) &addr, &addr_size) == -1) |
1bbd0b84 | 1338 | SCM_SYSERROR; |
f43f3620 LC |
1339 | |
1340 | return _scm_from_sockaddr (&addr, addr_size, FUNC_NAME); | |
0f2d19dd | 1341 | } |
1bbd0b84 | 1342 | #undef FUNC_NAME |
0f2d19dd | 1343 | |
a1ec6916 | 1344 | SCM_DEFINE (scm_recv, "recv!", 2, 1, 0, |
1bbd0b84 | 1345 | (SCM sock, SCM buf, SCM flags), |
eefae538 GH |
1346 | "Receive data from a socket port.\n" |
1347 | "@var{sock} must already\n" | |
b380b885 | 1348 | "be bound to the address from which data is to be received.\n" |
d21a1dc8 | 1349 | "@var{buf} is a bytevector into which\n" |
eefae538 GH |
1350 | "the data will be written. The size of @var{buf} limits\n" |
1351 | "the amount of\n" | |
b380b885 | 1352 | "data which can be received: in the case of packet\n" |
eefae538 GH |
1353 | "protocols, if a packet larger than this limit is encountered\n" |
1354 | "then some data\n" | |
b380b885 MD |
1355 | "will be irrevocably lost.\n\n" |
1356 | "The optional @var{flags} argument is a value or\n" | |
1357 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
eefae538 GH |
1358 | "The value returned is the number of bytes read from the\n" |
1359 | "socket.\n\n" | |
1360 | "Note that the data is read directly from the socket file\n" | |
1361 | "descriptor:\n" | |
09831f94 | 1362 | "any unread buffered port data is ignored.") |
1bbd0b84 | 1363 | #define FUNC_NAME s_scm_recv |
0f2d19dd | 1364 | { |
d21a1dc8 | 1365 | int rv, fd, flg; |
370312ae | 1366 | |
34d19ef6 | 1367 | SCM_VALIDATE_OPFPORT (1, sock); |
d21a1dc8 | 1368 | |
7cee5b31 MV |
1369 | if (SCM_UNBNDP (flags)) |
1370 | flg = 0; | |
1371 | else | |
1372 | flg = scm_to_int (flags); | |
ee149d03 | 1373 | fd = SCM_FPORT_FDES (sock); |
370312ae | 1374 | |
fc7bd367 | 1375 | SCM_VALIDATE_BYTEVECTOR (1, buf); |
d21a1dc8 | 1376 | |
fc7bd367 AW |
1377 | SCM_SYSCALL (rv = recv (fd, |
1378 | SCM_BYTEVECTOR_CONTENTS (buf), | |
1379 | SCM_BYTEVECTOR_LENGTH (buf), | |
1380 | flg)); | |
cc95e00a | 1381 | |
d21a1dc8 | 1382 | if (SCM_UNLIKELY (rv == -1)) |
1bbd0b84 | 1383 | SCM_SYSERROR; |
370312ae | 1384 | |
d21a1dc8 | 1385 | scm_remember_upto_here (buf); |
7cee5b31 | 1386 | return scm_from_int (rv); |
370312ae | 1387 | } |
1bbd0b84 | 1388 | #undef FUNC_NAME |
370312ae | 1389 | |
a1ec6916 | 1390 | SCM_DEFINE (scm_send, "send", 2, 1, 0, |
1bbd0b84 | 1391 | (SCM sock, SCM message, SCM flags), |
d21a1dc8 | 1392 | "Transmit bytevector @var{message} on socket port @var{sock}.\n" |
eefae538 GH |
1393 | "@var{sock} must already be bound to a destination address. The\n" |
1394 | "value returned is the number of bytes transmitted --\n" | |
1395 | "it's possible for\n" | |
1396 | "this to be less than the length of @var{message}\n" | |
1397 | "if the socket is\n" | |
1398 | "set to be non-blocking. The optional @var{flags} argument\n" | |
1399 | "is a value or\n" | |
b380b885 | 1400 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" |
eefae538 GH |
1401 | "Note that the data is written directly to the socket\n" |
1402 | "file descriptor:\n" | |
587a3355 MG |
1403 | "any unflushed buffered port data is ignored.\n\n" |
1404 | "This operation is defined only for strings containing codepoints\n" | |
1405 | "zero to 255.") | |
1bbd0b84 | 1406 | #define FUNC_NAME s_scm_send |
370312ae | 1407 | { |
d21a1dc8 | 1408 | int rv, fd, flg; |
370312ae | 1409 | |
78446828 | 1410 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1411 | SCM_VALIDATE_OPFPORT (1, sock); |
587a3355 | 1412 | |
7cee5b31 MV |
1413 | if (SCM_UNBNDP (flags)) |
1414 | flg = 0; | |
1415 | else | |
1416 | flg = scm_to_int (flags); | |
d21a1dc8 | 1417 | |
ee149d03 | 1418 | fd = SCM_FPORT_FDES (sock); |
370312ae | 1419 | |
fc7bd367 | 1420 | SCM_VALIDATE_BYTEVECTOR (1, message); |
d21a1dc8 | 1421 | |
fc7bd367 AW |
1422 | SCM_SYSCALL (rv = send (fd, |
1423 | SCM_BYTEVECTOR_CONTENTS (message), | |
1424 | SCM_BYTEVECTOR_LENGTH (message), | |
1425 | flg)); | |
cc95e00a | 1426 | |
370312ae | 1427 | if (rv == -1) |
1bbd0b84 | 1428 | SCM_SYSERROR; |
396e5506 MV |
1429 | |
1430 | scm_remember_upto_here_1 (message); | |
7cee5b31 | 1431 | return scm_from_int (rv); |
370312ae | 1432 | } |
1bbd0b84 | 1433 | #undef FUNC_NAME |
370312ae | 1434 | |
a1ec6916 | 1435 | SCM_DEFINE (scm_recvfrom, "recvfrom!", 2, 3, 0, |
d21a1dc8 | 1436 | (SCM sock, SCM buf, SCM flags, SCM start, SCM end), |
8ab3d8a0 KR |
1437 | "Receive data from socket port @var{sock} (which must be already\n" |
1438 | "bound), returning the originating address as well as the data.\n" | |
1439 | "This is usually for use on datagram sockets, but can be used on\n" | |
1440 | "stream-oriented sockets too.\n" | |
1441 | "\n" | |
d21a1dc8 LC |
1442 | "The data received is stored in bytevector @var{buf}, using\n" |
1443 | "either the whole bytevector or just the region between the optional\n" | |
1444 | "@var{start} and @var{end} positions. The size of @var{buf}\n" | |
1445 | "limits the amount of data that can be received. For datagram\n" | |
8ab3d8a0 KR |
1446 | "protocols, if a packet larger than this is received then excess\n" |
1447 | "bytes are irrevocably lost.\n" | |
1448 | "\n" | |
1449 | "The return value is a pair. The @code{car} is the number of\n" | |
1450 | "bytes read. The @code{cdr} is a socket address object which is\n" | |
d21a1dc8 | 1451 | "where the data came from, or @code{#f} if the origin is\n" |
8ab3d8a0 KR |
1452 | "unknown.\n" |
1453 | "\n" | |
1454 | "The optional @var{flags} argument is a or bitwise OR\n" | |
1455 | "(@code{logior}) of @code{MSG_OOB}, @code{MSG_PEEK},\n" | |
1456 | "@code{MSG_DONTROUTE} etc.\n" | |
1457 | "\n" | |
1458 | "Data is read directly from the socket file descriptor, any\n" | |
1459 | "buffered port data is ignored.\n" | |
1460 | "\n" | |
1461 | "On a GNU/Linux system @code{recvfrom!} is not multi-threading,\n" | |
1462 | "all threads stop while a @code{recvfrom!} call is in progress.\n" | |
1463 | "An application may need to use @code{select}, @code{O_NONBLOCK}\n" | |
1464 | "or @code{MSG_DONTWAIT} to avoid this.") | |
1bbd0b84 | 1465 | #define FUNC_NAME s_scm_recvfrom |
370312ae | 1466 | { |
d21a1dc8 | 1467 | int rv, fd, flg; |
370312ae | 1468 | SCM address; |
d21a1dc8 | 1469 | size_t offset, cend; |
5ee417fc | 1470 | socklen_t addr_size = MAX_ADDR_SIZE; |
f43f3620 | 1471 | scm_t_max_sockaddr addr; |
370312ae | 1472 | |
34d19ef6 | 1473 | SCM_VALIDATE_OPFPORT (1, sock); |
60d02d09 | 1474 | fd = SCM_FPORT_FDES (sock); |
396e5506 | 1475 | |
1146b6cd GH |
1476 | if (SCM_UNBNDP (flags)) |
1477 | flg = 0; | |
370312ae | 1478 | else |
60d02d09 | 1479 | SCM_VALIDATE_ULONG_COPY (3, flags, flg); |
370312ae | 1480 | |
f43f3620 | 1481 | ((struct sockaddr *) &addr)->sa_family = AF_UNSPEC; |
d21a1dc8 | 1482 | |
fc7bd367 | 1483 | SCM_VALIDATE_BYTEVECTOR (1, buf); |
d21a1dc8 | 1484 | |
fc7bd367 AW |
1485 | if (SCM_UNBNDP (start)) |
1486 | offset = 0; | |
1487 | else | |
1488 | offset = scm_to_size_t (start); | |
d21a1dc8 | 1489 | |
fc7bd367 AW |
1490 | if (SCM_UNBNDP (end)) |
1491 | cend = SCM_BYTEVECTOR_LENGTH (buf); | |
d21a1dc8 | 1492 | else |
d21a1dc8 | 1493 | { |
fc7bd367 AW |
1494 | cend = scm_to_size_t (end); |
1495 | if (SCM_UNLIKELY (cend >= SCM_BYTEVECTOR_LENGTH (buf) | |
1496 | || cend < offset)) | |
1497 | scm_out_of_range (FUNC_NAME, end); | |
d21a1dc8 | 1498 | } |
cc95e00a | 1499 | |
fc7bd367 AW |
1500 | SCM_SYSCALL (rv = recvfrom (fd, |
1501 | SCM_BYTEVECTOR_CONTENTS (buf) + offset, | |
1502 | cend - offset, flg, | |
1503 | (struct sockaddr *) &addr, &addr_size)); | |
1504 | ||
370312ae | 1505 | if (rv == -1) |
1bbd0b84 | 1506 | SCM_SYSERROR; |
d21a1dc8 LC |
1507 | |
1508 | /* `recvfrom' does not necessarily return an address. Usually nothing | |
1509 | is returned for stream sockets. */ | |
f43f3620 LC |
1510 | if (((struct sockaddr *) &addr)->sa_family != AF_UNSPEC) |
1511 | address = _scm_from_sockaddr (&addr, addr_size, FUNC_NAME); | |
370312ae GH |
1512 | else |
1513 | address = SCM_BOOL_F; | |
1514 | ||
d21a1dc8 | 1515 | scm_remember_upto_here_1 (buf); |
f43f3620 | 1516 | |
e11e83f3 | 1517 | return scm_cons (scm_from_int (rv), address); |
0f2d19dd | 1518 | } |
1bbd0b84 | 1519 | #undef FUNC_NAME |
0f2d19dd | 1520 | |
9c0129ac KR |
1521 | SCM_DEFINE (scm_sendto, "sendto", 3, 1, 1, |
1522 | (SCM sock, SCM message, SCM fam_or_sockaddr, SCM address, SCM args_and_flags), | |
d21a1dc8 | 1523 | "Transmit bytevector @var{message} on socket port\n" |
eefae538 | 1524 | "@var{sock}. The\n" |
b7e64f8b | 1525 | "destination address is specified using the @var{fam_or_sockaddr},\n" |
eefae538 | 1526 | "@var{address} and\n" |
9c0129ac KR |
1527 | "@var{args_and_flags} arguments, or just a socket address object " |
1528 | "returned by @code{make-socket-address}, in a similar way to the\n" | |
eefae538 GH |
1529 | "@code{connect} procedure. @var{args_and_flags} contains\n" |
1530 | "the usual connection arguments optionally followed by\n" | |
1531 | "a flags argument, which is a value or\n" | |
b380b885 | 1532 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" |
eefae538 GH |
1533 | "The value returned is the number of bytes transmitted --\n" |
1534 | "it's possible for\n" | |
1535 | "this to be less than the length of @var{message} if the\n" | |
1536 | "socket is\n" | |
1537 | "set to be non-blocking.\n" | |
1538 | "Note that the data is written directly to the socket\n" | |
1539 | "file descriptor:\n" | |
587a3355 MG |
1540 | "any unflushed buffered port data is ignored.\n" |
1541 | "This operation is defined only for strings containing codepoints\n" | |
1542 | "zero to 255.") | |
1bbd0b84 | 1543 | #define FUNC_NAME s_scm_sendto |
370312ae | 1544 | { |
d21a1dc8 | 1545 | int rv, fd, flg; |
370312ae | 1546 | struct sockaddr *soka; |
9c0129ac | 1547 | size_t size; |
370312ae | 1548 | |
78446828 | 1549 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1550 | SCM_VALIDATE_FPORT (1, sock); |
ee149d03 | 1551 | fd = SCM_FPORT_FDES (sock); |
9c0129ac KR |
1552 | |
1553 | if (!scm_is_number (fam_or_sockaddr)) | |
1554 | { | |
1555 | /* FAM_OR_SOCKADDR must actually be a `socket address' object. This | |
1556 | means that the following arguments, i.e. ADDRESS and those listed in | |
1557 | ARGS_AND_FLAGS, are the `MSG_' flags. */ | |
1558 | soka = scm_to_sockaddr (fam_or_sockaddr, &size); | |
d223c3fc | 1559 | if (!scm_is_eq (address, SCM_UNDEFINED)) |
9c0129ac KR |
1560 | args_and_flags = scm_cons (address, args_and_flags); |
1561 | } | |
1562 | else | |
1563 | soka = scm_fill_sockaddr (scm_to_int (fam_or_sockaddr), address, | |
1564 | &args_and_flags, 3, FUNC_NAME, &size); | |
1565 | ||
d2e53ed6 | 1566 | if (scm_is_null (args_and_flags)) |
370312ae GH |
1567 | flg = 0; |
1568 | else | |
1569 | { | |
34d19ef6 | 1570 | SCM_VALIDATE_CONS (5, args_and_flags); |
e4b265d8 | 1571 | flg = SCM_NUM2ULONG (5, SCM_CAR (args_and_flags)); |
370312ae | 1572 | } |
d21a1dc8 | 1573 | |
fc7bd367 | 1574 | SCM_VALIDATE_BYTEVECTOR (1, message); |
d21a1dc8 | 1575 | |
fc7bd367 AW |
1576 | SCM_SYSCALL (rv = sendto (fd, |
1577 | SCM_BYTEVECTOR_CONTENTS (message), | |
1578 | SCM_BYTEVECTOR_LENGTH (message), | |
1579 | flg, soka, size)); | |
d21a1dc8 | 1580 | |
370312ae | 1581 | if (rv == -1) |
439006bf GH |
1582 | { |
1583 | int save_errno = errno; | |
1584 | free (soka); | |
1585 | errno = save_errno; | |
1586 | SCM_SYSERROR; | |
1587 | } | |
1588 | free (soka); | |
396e5506 MV |
1589 | |
1590 | scm_remember_upto_here_1 (message); | |
e11e83f3 | 1591 | return scm_from_int (rv); |
370312ae | 1592 | } |
1bbd0b84 | 1593 | #undef FUNC_NAME |
370312ae GH |
1594 | \f |
1595 | ||
1596 | ||
1597 | void | |
0f2d19dd | 1598 | scm_init_socket () |
0f2d19dd | 1599 | { |
370312ae GH |
1600 | /* protocol families. */ |
1601 | #ifdef AF_UNSPEC | |
e11e83f3 | 1602 | scm_c_define ("AF_UNSPEC", scm_from_int (AF_UNSPEC)); |
370312ae | 1603 | #endif |
dba6f4e2 | 1604 | #if defined HAVE_UNIX_DOMAIN_SOCKETS && defined AF_UNIX |
e11e83f3 | 1605 | scm_c_define ("AF_UNIX", scm_from_int (AF_UNIX)); |
370312ae GH |
1606 | #endif |
1607 | #ifdef AF_INET | |
e11e83f3 | 1608 | scm_c_define ("AF_INET", scm_from_int (AF_INET)); |
370312ae | 1609 | #endif |
3453619b | 1610 | #ifdef AF_INET6 |
e11e83f3 | 1611 | scm_c_define ("AF_INET6", scm_from_int (AF_INET6)); |
3453619b | 1612 | #endif |
370312ae GH |
1613 | |
1614 | #ifdef PF_UNSPEC | |
e11e83f3 | 1615 | scm_c_define ("PF_UNSPEC", scm_from_int (PF_UNSPEC)); |
370312ae GH |
1616 | #endif |
1617 | #ifdef PF_UNIX | |
e11e83f3 | 1618 | scm_c_define ("PF_UNIX", scm_from_int (PF_UNIX)); |
370312ae GH |
1619 | #endif |
1620 | #ifdef PF_INET | |
e11e83f3 | 1621 | scm_c_define ("PF_INET", scm_from_int (PF_INET)); |
370312ae | 1622 | #endif |
3453619b | 1623 | #ifdef PF_INET6 |
e11e83f3 | 1624 | scm_c_define ("PF_INET6", scm_from_int (PF_INET6)); |
3453619b | 1625 | #endif |
370312ae | 1626 | |
66c73b76 GH |
1627 | /* standard addresses. */ |
1628 | #ifdef INADDR_ANY | |
b9bd8526 | 1629 | scm_c_define ("INADDR_ANY", scm_from_ulong (INADDR_ANY)); |
66c73b76 GH |
1630 | #endif |
1631 | #ifdef INADDR_BROADCAST | |
b9bd8526 | 1632 | scm_c_define ("INADDR_BROADCAST", scm_from_ulong (INADDR_BROADCAST)); |
66c73b76 GH |
1633 | #endif |
1634 | #ifdef INADDR_NONE | |
b9bd8526 | 1635 | scm_c_define ("INADDR_NONE", scm_from_ulong (INADDR_NONE)); |
66c73b76 GH |
1636 | #endif |
1637 | #ifdef INADDR_LOOPBACK | |
b9bd8526 | 1638 | scm_c_define ("INADDR_LOOPBACK", scm_from_ulong (INADDR_LOOPBACK)); |
66c73b76 GH |
1639 | #endif |
1640 | ||
6f637a1b KR |
1641 | /* socket types. |
1642 | ||
1643 | SOCK_PACKET is deliberately omitted, the GNU/Linux socket(2) and | |
1644 | packet(7) advise that it's obsolete and strongly deprecated. */ | |
1645 | ||
370312ae | 1646 | #ifdef SOCK_STREAM |
e11e83f3 | 1647 | scm_c_define ("SOCK_STREAM", scm_from_int (SOCK_STREAM)); |
370312ae GH |
1648 | #endif |
1649 | #ifdef SOCK_DGRAM | |
e11e83f3 | 1650 | scm_c_define ("SOCK_DGRAM", scm_from_int (SOCK_DGRAM)); |
370312ae | 1651 | #endif |
6f637a1b KR |
1652 | #ifdef SOCK_SEQPACKET |
1653 | scm_c_define ("SOCK_SEQPACKET", scm_from_int (SOCK_SEQPACKET)); | |
1654 | #endif | |
370312ae | 1655 | #ifdef SOCK_RAW |
e11e83f3 | 1656 | scm_c_define ("SOCK_RAW", scm_from_int (SOCK_RAW)); |
370312ae | 1657 | #endif |
6f637a1b KR |
1658 | #ifdef SOCK_RDM |
1659 | scm_c_define ("SOCK_RDM", scm_from_int (SOCK_RDM)); | |
1660 | #endif | |
370312ae | 1661 | |
8fae2bf4 KR |
1662 | /* setsockopt level. |
1663 | ||
1664 | SOL_IP, SOL_TCP and SOL_UDP are defined on gnu/linux, but not on for | |
1665 | instance NetBSD. We define IPPROTOs because that's what the posix spec | |
1666 | shows in its example at | |
1667 | ||
1668 | http://www.opengroup.org/onlinepubs/007904975/functions/getsockopt.html | |
1669 | */ | |
370312ae | 1670 | #ifdef SOL_SOCKET |
e11e83f3 | 1671 | scm_c_define ("SOL_SOCKET", scm_from_int (SOL_SOCKET)); |
370312ae | 1672 | #endif |
8fae2bf4 KR |
1673 | #ifdef IPPROTO_IP |
1674 | scm_c_define ("IPPROTO_IP", scm_from_int (IPPROTO_IP)); | |
370312ae | 1675 | #endif |
8fae2bf4 KR |
1676 | #ifdef IPPROTO_TCP |
1677 | scm_c_define ("IPPROTO_TCP", scm_from_int (IPPROTO_TCP)); | |
370312ae | 1678 | #endif |
8fae2bf4 KR |
1679 | #ifdef IPPROTO_UDP |
1680 | scm_c_define ("IPPROTO_UDP", scm_from_int (IPPROTO_UDP)); | |
370312ae GH |
1681 | #endif |
1682 | ||
1683 | /* setsockopt names. */ | |
1684 | #ifdef SO_DEBUG | |
e11e83f3 | 1685 | scm_c_define ("SO_DEBUG", scm_from_int (SO_DEBUG)); |
370312ae GH |
1686 | #endif |
1687 | #ifdef SO_REUSEADDR | |
e11e83f3 | 1688 | scm_c_define ("SO_REUSEADDR", scm_from_int (SO_REUSEADDR)); |
370312ae GH |
1689 | #endif |
1690 | #ifdef SO_STYLE | |
e11e83f3 | 1691 | scm_c_define ("SO_STYLE", scm_from_int (SO_STYLE)); |
370312ae GH |
1692 | #endif |
1693 | #ifdef SO_TYPE | |
e11e83f3 | 1694 | scm_c_define ("SO_TYPE", scm_from_int (SO_TYPE)); |
370312ae GH |
1695 | #endif |
1696 | #ifdef SO_ERROR | |
e11e83f3 | 1697 | scm_c_define ("SO_ERROR", scm_from_int (SO_ERROR)); |
370312ae GH |
1698 | #endif |
1699 | #ifdef SO_DONTROUTE | |
e11e83f3 | 1700 | scm_c_define ("SO_DONTROUTE", scm_from_int (SO_DONTROUTE)); |
370312ae GH |
1701 | #endif |
1702 | #ifdef SO_BROADCAST | |
e11e83f3 | 1703 | scm_c_define ("SO_BROADCAST", scm_from_int (SO_BROADCAST)); |
370312ae GH |
1704 | #endif |
1705 | #ifdef SO_SNDBUF | |
e11e83f3 | 1706 | scm_c_define ("SO_SNDBUF", scm_from_int (SO_SNDBUF)); |
370312ae GH |
1707 | #endif |
1708 | #ifdef SO_RCVBUF | |
e11e83f3 | 1709 | scm_c_define ("SO_RCVBUF", scm_from_int (SO_RCVBUF)); |
370312ae GH |
1710 | #endif |
1711 | #ifdef SO_KEEPALIVE | |
e11e83f3 | 1712 | scm_c_define ("SO_KEEPALIVE", scm_from_int (SO_KEEPALIVE)); |
370312ae GH |
1713 | #endif |
1714 | #ifdef SO_OOBINLINE | |
e11e83f3 | 1715 | scm_c_define ("SO_OOBINLINE", scm_from_int (SO_OOBINLINE)); |
370312ae GH |
1716 | #endif |
1717 | #ifdef SO_NO_CHECK | |
e11e83f3 | 1718 | scm_c_define ("SO_NO_CHECK", scm_from_int (SO_NO_CHECK)); |
370312ae GH |
1719 | #endif |
1720 | #ifdef SO_PRIORITY | |
e11e83f3 | 1721 | scm_c_define ("SO_PRIORITY", scm_from_int (SO_PRIORITY)); |
370312ae GH |
1722 | #endif |
1723 | #ifdef SO_LINGER | |
e11e83f3 | 1724 | scm_c_define ("SO_LINGER", scm_from_int (SO_LINGER)); |
370312ae | 1725 | #endif |
5f24f1b5 LC |
1726 | #ifdef SO_REUSEPORT /* new in Linux 3.9 */ |
1727 | scm_c_define ("SO_REUSEPORT", scm_from_int (SO_REUSEPORT)); | |
1728 | #endif | |
370312ae GH |
1729 | |
1730 | /* recv/send options. */ | |
8ab3d8a0 KR |
1731 | #ifdef MSG_DONTWAIT |
1732 | scm_c_define ("MSG_DONTWAIT", scm_from_int (MSG_DONTWAIT)); | |
1733 | #endif | |
370312ae | 1734 | #ifdef MSG_OOB |
e11e83f3 | 1735 | scm_c_define ("MSG_OOB", scm_from_int (MSG_OOB)); |
370312ae GH |
1736 | #endif |
1737 | #ifdef MSG_PEEK | |
e11e83f3 | 1738 | scm_c_define ("MSG_PEEK", scm_from_int (MSG_PEEK)); |
370312ae GH |
1739 | #endif |
1740 | #ifdef MSG_DONTROUTE | |
e11e83f3 | 1741 | scm_c_define ("MSG_DONTROUTE", scm_from_int (MSG_DONTROUTE)); |
370312ae GH |
1742 | #endif |
1743 | ||
1c80707c MV |
1744 | #ifdef IP_ADD_MEMBERSHIP |
1745 | scm_c_define ("IP_ADD_MEMBERSHIP", scm_from_int (IP_ADD_MEMBERSHIP)); | |
1746 | scm_c_define ("IP_DROP_MEMBERSHIP", scm_from_int (IP_DROP_MEMBERSHIP)); | |
1747 | #endif | |
1748 | ||
511246a1 TCM |
1749 | #ifdef IP_MULTICAST_TTL |
1750 | scm_c_define ("IP_MULTICAST_TTL", scm_from_int ( IP_MULTICAST_TTL)); | |
1751 | #endif | |
1752 | ||
1753 | #ifdef IP_MULTICAST_IF | |
1754 | scm_c_define ("IP_MULTICAST_IF", scm_from_int ( IP_MULTICAST_IF)); | |
1755 | #endif | |
1756 | ||
0f2d19dd | 1757 | scm_add_feature ("socket"); |
370312ae | 1758 | |
a0599745 | 1759 | #include "libguile/socket.x" |
0f2d19dd JB |
1760 | } |
1761 | ||
89e00824 ML |
1762 | |
1763 | /* | |
1764 | Local Variables: | |
1765 | c-file-style: "gnu" | |
1766 | End: | |
1767 | */ |