Commit | Line | Data |
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09270afd | 1 | /* Copyright (C) 1996,1997,1998,2000,2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
86667910 | 2 | * |
73be1d9e MV |
3 | * This library is free software; you can redistribute it and/or |
4 | * modify it under the terms of the GNU Lesser General Public | |
5 | * License as published by the Free Software Foundation; either | |
6 | * version 2.1 of the License, or (at your option) any later version. | |
86667910 | 7 | * |
73be1d9e MV |
8 | * This library 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 GNU | |
11 | * Lesser General Public License for more details. | |
86667910 | 12 | * |
73be1d9e MV |
13 | * You should have received a copy of the GNU Lesser General Public |
14 | * License along with this library; if not, write to the Free Software | |
92205699 | 15 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
73be1d9e | 16 | */ |
1bbd0b84 | 17 | |
1bbd0b84 | 18 | |
0f2d19dd JB |
19 | \f |
20 | ||
eccde741 RB |
21 | #if HAVE_CONFIG_H |
22 | # include <config.h> | |
23 | #endif | |
24 | ||
e6e2e95a | 25 | #include <errno.h> |
69d49ac8 | 26 | #include <gmp.h> |
e6e2e95a | 27 | |
a0599745 MD |
28 | #include "libguile/_scm.h" |
29 | #include "libguile/unif.h" | |
30 | #include "libguile/feature.h" | |
31 | #include "libguile/fports.h" | |
32 | #include "libguile/strings.h" | |
33 | #include "libguile/vectors.h" | |
7f9994d9 | 34 | #include "libguile/dynwind.h" |
20e6290e | 35 | |
a0599745 MD |
36 | #include "libguile/validate.h" |
37 | #include "libguile/socket.h" | |
95b88819 | 38 | |
b4e15479 SJ |
39 | #ifdef __MINGW32__ |
40 | #include "win32-socket.h" | |
41 | #endif | |
42 | ||
af68e5e5 SJ |
43 | #ifdef HAVE_STDINT_H |
44 | #include <stdint.h> | |
45 | #endif | |
95b88819 GH |
46 | #ifdef HAVE_STRING_H |
47 | #include <string.h> | |
48 | #endif | |
370312ae GH |
49 | #ifdef HAVE_UNISTD_H |
50 | #include <unistd.h> | |
51 | #endif | |
0f2d19dd | 52 | #include <sys/types.h> |
f87c105a | 53 | #ifdef HAVE_WINSOCK2_H |
82893676 MG |
54 | #include <winsock2.h> |
55 | #else | |
0f2d19dd | 56 | #include <sys/socket.h> |
1ba8c23a | 57 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
0f2d19dd | 58 | #include <sys/un.h> |
0e958795 | 59 | #endif |
0f2d19dd JB |
60 | #include <netinet/in.h> |
61 | #include <netdb.h> | |
62 | #include <arpa/inet.h> | |
82893676 | 63 | #endif |
0f2d19dd | 64 | |
97d0e20b GH |
65 | #if defined (HAVE_UNIX_DOMAIN_SOCKETS) && !defined (SUN_LEN) |
66 | #define SUN_LEN(ptr) ((size_t) (((struct sockaddr_un *) 0)->sun_path) \ | |
67 | + strlen ((ptr)->sun_path)) | |
68 | #endif | |
69 | ||
0f2d19dd JB |
70 | \f |
71 | ||
a1ec6916 | 72 | SCM_DEFINE (scm_htons, "htons", 1, 0, 0, |
eefae538 GH |
73 | (SCM value), |
74 | "Convert a 16 bit quantity from host to network byte ordering.\n" | |
75 | "@var{value} is packed into 2 bytes, which are then converted\n" | |
76 | "and returned as a new integer.") | |
1bbd0b84 | 77 | #define FUNC_NAME s_scm_htons |
5c11cc9d | 78 | { |
7cee5b31 | 79 | return scm_from_ushort (htons (scm_to_ushort (value))); |
5c11cc9d | 80 | } |
1bbd0b84 | 81 | #undef FUNC_NAME |
5c11cc9d | 82 | |
a1ec6916 | 83 | SCM_DEFINE (scm_ntohs, "ntohs", 1, 0, 0, |
eefae538 GH |
84 | (SCM value), |
85 | "Convert a 16 bit quantity from network to host byte ordering.\n" | |
86 | "@var{value} is packed into 2 bytes, which are then converted\n" | |
87 | "and returned as a new integer.") | |
1bbd0b84 | 88 | #define FUNC_NAME s_scm_ntohs |
5c11cc9d | 89 | { |
7cee5b31 | 90 | return scm_from_ushort (ntohs (scm_to_ushort (value))); |
5c11cc9d | 91 | } |
1bbd0b84 | 92 | #undef FUNC_NAME |
5c11cc9d | 93 | |
a1ec6916 | 94 | SCM_DEFINE (scm_htonl, "htonl", 1, 0, 0, |
eefae538 GH |
95 | (SCM value), |
96 | "Convert a 32 bit quantity from host to network byte ordering.\n" | |
97 | "@var{value} is packed into 4 bytes, which are then converted\n" | |
98 | "and returned as a new integer.") | |
1bbd0b84 | 99 | #define FUNC_NAME s_scm_htonl |
5c11cc9d | 100 | { |
eccde741 | 101 | scm_t_uint32 c_in = SCM_NUM2ULONG (1, value); |
66c73b76 | 102 | |
b9bd8526 | 103 | return scm_from_ulong (htonl (c_in)); |
5c11cc9d | 104 | } |
1bbd0b84 | 105 | #undef FUNC_NAME |
5c11cc9d | 106 | |
a1ec6916 | 107 | SCM_DEFINE (scm_ntohl, "ntohl", 1, 0, 0, |
eefae538 GH |
108 | (SCM value), |
109 | "Convert a 32 bit quantity from network to host byte ordering.\n" | |
110 | "@var{value} is packed into 4 bytes, which are then converted\n" | |
111 | "and returned as a new integer.") | |
1bbd0b84 | 112 | #define FUNC_NAME s_scm_ntohl |
5c11cc9d | 113 | { |
eccde741 | 114 | scm_t_uint32 c_in = SCM_NUM2ULONG (1, value); |
66c73b76 | 115 | |
b9bd8526 | 116 | return scm_from_ulong (ntohl (c_in)); |
5c11cc9d | 117 | } |
1bbd0b84 | 118 | #undef FUNC_NAME |
5c11cc9d | 119 | |
66c73b76 GH |
120 | #ifndef HAVE_INET_ATON |
121 | /* for our definition in inet_aton.c, not usually needed. */ | |
122 | extern int inet_aton (); | |
123 | #endif | |
124 | ||
125 | SCM_DEFINE (scm_inet_aton, "inet-aton", 1, 0, 0, | |
126 | (SCM address), | |
eefae538 GH |
127 | "Convert an IPv4 Internet address from printable string\n" |
128 | "(dotted decimal notation) to an integer. E.g.,\n\n" | |
66c73b76 GH |
129 | "@lisp\n" |
130 | "(inet-aton \"127.0.0.1\") @result{} 2130706433\n" | |
131 | "@end lisp") | |
132 | #define FUNC_NAME s_scm_inet_aton | |
133 | { | |
134 | struct in_addr soka; | |
396e5506 MV |
135 | char *c_address; |
136 | int rv; | |
66c73b76 | 137 | |
396e5506 MV |
138 | c_address = scm_to_locale_string (address); |
139 | rv = inet_aton (c_address, &soka); | |
140 | free (c_address); | |
141 | if (rv == 0) | |
66c73b76 | 142 | SCM_MISC_ERROR ("bad address", SCM_EOL); |
b9bd8526 | 143 | return scm_from_ulong (ntohl (soka.s_addr)); |
66c73b76 GH |
144 | } |
145 | #undef FUNC_NAME | |
146 | ||
147 | ||
148 | SCM_DEFINE (scm_inet_ntoa, "inet-ntoa", 1, 0, 0, | |
149 | (SCM inetid), | |
eefae538 GH |
150 | "Convert an IPv4 Internet address to a printable\n" |
151 | "(dotted decimal notation) string. E.g.,\n\n" | |
66c73b76 GH |
152 | "@lisp\n" |
153 | "(inet-ntoa 2130706433) @result{} \"127.0.0.1\"\n" | |
154 | "@end lisp") | |
155 | #define FUNC_NAME s_scm_inet_ntoa | |
156 | { | |
157 | struct in_addr addr; | |
158 | char *s; | |
159 | SCM answer; | |
160 | addr.s_addr = htonl (SCM_NUM2ULONG (1, inetid)); | |
161 | s = inet_ntoa (addr); | |
cc95e00a | 162 | answer = scm_from_locale_string (s); |
66c73b76 GH |
163 | return answer; |
164 | } | |
165 | #undef FUNC_NAME | |
166 | ||
167 | #ifdef HAVE_INET_NETOF | |
168 | SCM_DEFINE (scm_inet_netof, "inet-netof", 1, 0, 0, | |
169 | (SCM address), | |
eefae538 GH |
170 | "Return the network number part of the given IPv4\n" |
171 | "Internet address. E.g.,\n\n" | |
66c73b76 GH |
172 | "@lisp\n" |
173 | "(inet-netof 2130706433) @result{} 127\n" | |
174 | "@end lisp") | |
175 | #define FUNC_NAME s_scm_inet_netof | |
176 | { | |
177 | struct in_addr addr; | |
178 | addr.s_addr = htonl (SCM_NUM2ULONG (1, address)); | |
b9bd8526 | 179 | return scm_from_ulong (inet_netof (addr)); |
66c73b76 GH |
180 | } |
181 | #undef FUNC_NAME | |
182 | #endif | |
183 | ||
184 | #ifdef HAVE_INET_LNAOF | |
185 | SCM_DEFINE (scm_lnaof, "inet-lnaof", 1, 0, 0, | |
186 | (SCM address), | |
187 | "Return the local-address-with-network part of the given\n" | |
eefae538 GH |
188 | "IPv4 Internet address, using the obsolete class A/B/C system.\n" |
189 | "E.g.,\n\n" | |
66c73b76 GH |
190 | "@lisp\n" |
191 | "(inet-lnaof 2130706433) @result{} 1\n" | |
192 | "@end lisp") | |
193 | #define FUNC_NAME s_scm_lnaof | |
194 | { | |
195 | struct in_addr addr; | |
196 | addr.s_addr = htonl (SCM_NUM2ULONG (1, address)); | |
b9bd8526 | 197 | return scm_from_ulong (inet_lnaof (addr)); |
66c73b76 GH |
198 | } |
199 | #undef FUNC_NAME | |
200 | #endif | |
201 | ||
202 | #ifdef HAVE_INET_MAKEADDR | |
203 | SCM_DEFINE (scm_inet_makeaddr, "inet-makeaddr", 2, 0, 0, | |
204 | (SCM net, SCM lna), | |
eefae538 | 205 | "Make an IPv4 Internet address by combining the network number\n" |
66c73b76 | 206 | "@var{net} with the local-address-within-network number\n" |
eefae538 | 207 | "@var{lna}. E.g.,\n\n" |
66c73b76 GH |
208 | "@lisp\n" |
209 | "(inet-makeaddr 127 1) @result{} 2130706433\n" | |
210 | "@end lisp") | |
211 | #define FUNC_NAME s_scm_inet_makeaddr | |
212 | { | |
213 | struct in_addr addr; | |
214 | unsigned long netnum; | |
215 | unsigned long lnanum; | |
216 | ||
217 | netnum = SCM_NUM2ULONG (1, net); | |
218 | lnanum = SCM_NUM2ULONG (2, lna); | |
219 | addr = inet_makeaddr (netnum, lnanum); | |
b9bd8526 | 220 | return scm_from_ulong (ntohl (addr.s_addr)); |
66c73b76 GH |
221 | } |
222 | #undef FUNC_NAME | |
223 | #endif | |
224 | ||
a57a0b1e | 225 | #ifdef HAVE_IPV6 |
eefae538 | 226 | |
66c73b76 GH |
227 | /* flip a 128 bit IPv6 address between host and network order. */ |
228 | #ifdef WORDS_BIGENDIAN | |
229 | #define FLIP_NET_HOST_128(addr) | |
230 | #else | |
231 | #define FLIP_NET_HOST_128(addr)\ | |
232 | {\ | |
233 | int i;\ | |
234 | \ | |
235 | for (i = 0; i < 8; i++)\ | |
236 | {\ | |
2de4f939 | 237 | scm_t_uint8 c = (addr)[i];\ |
66c73b76 GH |
238 | \ |
239 | (addr)[i] = (addr)[15 - i];\ | |
240 | (addr)[15 - i] = c;\ | |
241 | }\ | |
242 | } | |
243 | #endif | |
244 | ||
2de4f939 RB |
245 | #ifdef WORDS_BIGENDIAN |
246 | #define FLIPCPY_NET_HOST_128(dest, src) memcpy (dest, src, 16) | |
247 | #else | |
248 | #define FLIPCPY_NET_HOST_128(dest, src) \ | |
249 | { \ | |
250 | const scm_t_uint8 *tmp_srcp = (src) + 15; \ | |
251 | scm_t_uint8 *tmp_destp = (dest); \ | |
252 | \ | |
253 | do { \ | |
254 | *tmp_destp++ = *tmp_srcp--; \ | |
255 | } while (tmp_srcp != (src)); \ | |
256 | } | |
257 | #endif | |
258 | ||
259 | ||
7310ad0c | 260 | #if (SIZEOF_SCM_T_BITS * SCM_CHAR_BIT) > 128 |
2de4f939 RB |
261 | #error "Assumption that scm_t_bits <= 128 bits has been violated." |
262 | #endif | |
263 | ||
7310ad0c | 264 | #if (SIZEOF_UNSIGNED_LONG * SCM_CHAR_BIT) > 128 |
2de4f939 RB |
265 | #error "Assumption that unsigned long <= 128 bits has been violated." |
266 | #endif | |
267 | ||
7310ad0c | 268 | #if (SIZEOF_UNSIGNED_LONG_LONG * SCM_CHAR_BIT) > 128 |
2de4f939 RB |
269 | #error "Assumption that unsigned long long <= 128 bits has been violated." |
270 | #endif | |
271 | ||
66c73b76 GH |
272 | /* convert a 128 bit IPv6 address in network order to a host ordered |
273 | SCM integer. */ | |
7cee5b31 MV |
274 | static SCM |
275 | scm_from_ipv6 (const scm_t_uint8 *src) | |
66c73b76 | 276 | { |
2b4d1547 KR |
277 | SCM result = scm_i_mkbig (); |
278 | mpz_import (SCM_I_BIG_MPZ (result), | |
279 | 1, /* chunk */ | |
280 | 1, /* big-endian chunk ordering */ | |
281 | 16, /* chunks are 16 bytes long */ | |
282 | 1, /* big-endian byte ordering */ | |
283 | 0, /* "nails" -- leading unused bits per chunk */ | |
284 | src); | |
285 | return scm_i_normbig (result); | |
286 | } | |
66c73b76 GH |
287 | |
288 | /* convert a host ordered SCM integer to a 128 bit IPv6 address in | |
289 | network order. */ | |
7cee5b31 MV |
290 | static void |
291 | scm_to_ipv6 (scm_t_uint8 dst[16], SCM src) | |
66c73b76 | 292 | { |
e11e83f3 | 293 | if (SCM_I_INUMP (src)) |
66c73b76 | 294 | { |
e11e83f3 | 295 | scm_t_signed_bits n = SCM_I_INUM (src); |
7cee5b31 MV |
296 | if (n < 0) |
297 | scm_out_of_range (NULL, src); | |
2de4f939 RB |
298 | #ifdef WORDS_BIGENDIAN |
299 | memset (dst, 0, 16 - sizeof (scm_t_signed_bits)); | |
300 | memcpy (dst + (16 - sizeof (scm_t_signed_bits)), | |
301 | &n, | |
302 | sizeof (scm_t_signed_bits)); | |
303 | #else | |
304 | memset (dst + sizeof (scm_t_signed_bits), | |
305 | 0, | |
306 | 16 - sizeof (scm_t_signed_bits)); | |
307 | /* FIXME: this pair of ops is kinda wasteful -- should rewrite as | |
308 | a single loop perhaps, similar to the handling of bignums. */ | |
309 | memcpy (dst, &n, sizeof (scm_t_signed_bits)); | |
310 | FLIP_NET_HOST_128 (dst); | |
311 | #endif | |
66c73b76 | 312 | } |
7cee5b31 | 313 | else if (SCM_BIGP (src)) |
66c73b76 | 314 | { |
2de4f939 | 315 | size_t count; |
7cee5b31 MV |
316 | |
317 | if ((mpz_sgn (SCM_I_BIG_MPZ (src)) < 0) | |
318 | || mpz_sizeinbase (SCM_I_BIG_MPZ (src), 2) > 128) | |
319 | scm_out_of_range (NULL, src); | |
320 | ||
66c73b76 | 321 | memset (dst, 0, 16); |
2de4f939 RB |
322 | mpz_export (dst, |
323 | &count, | |
324 | 1, /* big-endian chunk ordering */ | |
325 | 16, /* chunks are 16 bytes long */ | |
326 | 1, /* big-endian byte ordering */ | |
327 | 0, /* "nails" -- leading unused bits per chunk */ | |
328 | SCM_I_BIG_MPZ (src)); | |
329 | scm_remember_upto_here_1 (src); | |
66c73b76 | 330 | } |
2de4f939 | 331 | else |
7cee5b31 | 332 | scm_wrong_type_arg (NULL, 0, src); |
2de4f939 RB |
333 | } |
334 | ||
66c73b76 GH |
335 | #ifdef HAVE_INET_PTON |
336 | SCM_DEFINE (scm_inet_pton, "inet-pton", 2, 0, 0, | |
337 | (SCM family, SCM address), | |
eefae538 GH |
338 | "Convert a string containing a printable network address to\n" |
339 | "an integer address. Note that unlike the C version of this\n" | |
340 | "function,\n" | |
66c73b76 | 341 | "the result is an integer with normal host byte ordering.\n" |
eefae538 | 342 | "@var{family} can be @code{AF_INET} or @code{AF_INET6}. E.g.,\n\n" |
66c73b76 | 343 | "@lisp\n" |
dd85ce47 ML |
344 | "(inet-pton AF_INET \"127.0.0.1\") @result{} 2130706433\n" |
345 | "(inet-pton AF_INET6 \"::1\") @result{} 1\n" | |
66c73b76 GH |
346 | "@end lisp") |
347 | #define FUNC_NAME s_scm_inet_pton | |
348 | { | |
349 | int af; | |
350 | char *src; | |
351 | char dst[16]; | |
396e5506 | 352 | int rv, eno; |
66c73b76 | 353 | |
7cee5b31 | 354 | af = scm_to_int (family); |
66c73b76 | 355 | SCM_ASSERT_RANGE (1, family, af == AF_INET || af == AF_INET6); |
396e5506 | 356 | src = scm_to_locale_string (address); |
66c73b76 | 357 | rv = inet_pton (af, src, dst); |
396e5506 MV |
358 | eno = errno; |
359 | free (src); | |
360 | errno = eno; | |
66c73b76 GH |
361 | if (rv == -1) |
362 | SCM_SYSERROR; | |
363 | else if (rv == 0) | |
364 | SCM_MISC_ERROR ("Bad address", SCM_EOL); | |
365 | if (af == AF_INET) | |
b9bd8526 | 366 | return scm_from_ulong (ntohl (*(scm_t_uint32 *) dst)); |
66c73b76 | 367 | else |
5ee417fc | 368 | return scm_from_ipv6 ((scm_t_uint8 *) dst); |
66c73b76 GH |
369 | } |
370 | #undef FUNC_NAME | |
371 | #endif | |
372 | ||
373 | #ifdef HAVE_INET_NTOP | |
374 | SCM_DEFINE (scm_inet_ntop, "inet-ntop", 2, 0, 0, | |
375 | (SCM family, SCM address), | |
eefae538 | 376 | "Convert a network address into a printable string.\n" |
66c73b76 GH |
377 | "Note that unlike the C version of this function,\n" |
378 | "the input is an integer with normal host byte ordering.\n" | |
eefae538 | 379 | "@var{family} can be @code{AF_INET} or @code{AF_INET6}. E.g.,\n\n" |
66c73b76 | 380 | "@lisp\n" |
dd85ce47 | 381 | "(inet-ntop AF_INET 2130706433) @result{} \"127.0.0.1\"\n" |
66c73b76 GH |
382 | "(inet-ntop AF_INET6 (- (expt 2 128) 1)) @result{}\n" |
383 | "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff\n" | |
384 | "@end lisp") | |
385 | #define FUNC_NAME s_scm_inet_ntop | |
386 | { | |
387 | int af; | |
388 | #ifdef INET6_ADDRSTRLEN | |
389 | char dst[INET6_ADDRSTRLEN]; | |
390 | #else | |
391 | char dst[46]; | |
392 | #endif | |
393 | char addr6[16]; | |
394 | ||
7cee5b31 | 395 | af = scm_to_int (family); |
66c73b76 GH |
396 | SCM_ASSERT_RANGE (1, family, af == AF_INET || af == AF_INET6); |
397 | if (af == AF_INET) | |
eccde741 | 398 | *(scm_t_uint32 *) addr6 = htonl (SCM_NUM2ULONG (2, address)); |
66c73b76 | 399 | else |
5ee417fc | 400 | scm_to_ipv6 ((scm_t_uint8 *) addr6, address); |
66c73b76 GH |
401 | if (inet_ntop (af, &addr6, dst, sizeof dst) == NULL) |
402 | SCM_SYSERROR; | |
cc95e00a | 403 | return scm_from_locale_string (dst); |
66c73b76 GH |
404 | } |
405 | #undef FUNC_NAME | |
406 | #endif | |
407 | ||
a57a0b1e | 408 | #endif /* HAVE_IPV6 */ |
eefae538 | 409 | |
bc45012d | 410 | SCM_SYMBOL (sym_socket, "socket"); |
82ddea4e | 411 | |
439006bf | 412 | #define SCM_SOCK_FD_TO_PORT(fd) scm_fdes_to_port (fd, "r+0", sym_socket) |
1bbd0b84 | 413 | |
a1ec6916 | 414 | SCM_DEFINE (scm_socket, "socket", 3, 0, 0, |
1bbd0b84 | 415 | (SCM family, SCM style, SCM proto), |
1e6808ea | 416 | "Return a new socket port of the type specified by @var{family},\n" |
eefae538 | 417 | "@var{style} and @var{proto}. All three parameters are\n" |
3453619b GH |
418 | "integers. Supported values for @var{family} are\n" |
419 | "@code{AF_UNIX}, @code{AF_INET} and @code{AF_INET6}.\n" | |
420 | "Typical values for @var{style} are @code{SOCK_STREAM},\n" | |
eefae538 GH |
421 | "@code{SOCK_DGRAM} and @code{SOCK_RAW}.\n\n" |
422 | "@var{proto} can be obtained from a protocol name using\n" | |
1e6808ea | 423 | "@code{getprotobyname}. A value of zero specifies the default\n" |
eefae538 | 424 | "protocol, which is usually right.\n\n" |
1e6808ea MG |
425 | "A single socket port cannot by used for communication until it\n" |
426 | "has been connected to another socket.") | |
1bbd0b84 | 427 | #define FUNC_NAME s_scm_socket |
0f2d19dd | 428 | { |
370312ae | 429 | int fd; |
370312ae | 430 | |
7cee5b31 MV |
431 | fd = socket (scm_to_int (family), |
432 | scm_to_int (style), | |
433 | scm_to_int (proto)); | |
439006bf GH |
434 | if (fd == -1) |
435 | SCM_SYSERROR; | |
436 | return SCM_SOCK_FD_TO_PORT (fd); | |
0f2d19dd | 437 | } |
1bbd0b84 | 438 | #undef FUNC_NAME |
0f2d19dd | 439 | |
0e958795 | 440 | #ifdef HAVE_SOCKETPAIR |
a1ec6916 | 441 | SCM_DEFINE (scm_socketpair, "socketpair", 3, 0, 0, |
1bbd0b84 | 442 | (SCM family, SCM style, SCM proto), |
1e6808ea | 443 | "Return a pair of connected (but unnamed) socket ports of the\n" |
eefae538 | 444 | "type specified by @var{family}, @var{style} and @var{proto}.\n" |
1e6808ea MG |
445 | "Many systems support only socket pairs of the @code{AF_UNIX}\n" |
446 | "family. Zero is likely to be the only meaningful value for\n" | |
eefae538 | 447 | "@var{proto}.") |
1bbd0b84 | 448 | #define FUNC_NAME s_scm_socketpair |
0f2d19dd | 449 | { |
370312ae GH |
450 | int fam; |
451 | int fd[2]; | |
370312ae | 452 | |
7cee5b31 | 453 | fam = scm_to_int (family); |
370312ae | 454 | |
7cee5b31 | 455 | if (socketpair (fam, scm_to_int (style), scm_to_int (proto), fd) == -1) |
1bbd0b84 | 456 | SCM_SYSERROR; |
370312ae | 457 | |
439006bf | 458 | return scm_cons (SCM_SOCK_FD_TO_PORT (fd[0]), SCM_SOCK_FD_TO_PORT (fd[1])); |
0f2d19dd | 459 | } |
1bbd0b84 | 460 | #undef FUNC_NAME |
0e958795 | 461 | #endif |
0f2d19dd | 462 | |
a1ec6916 | 463 | SCM_DEFINE (scm_getsockopt, "getsockopt", 3, 0, 0, |
1bbd0b84 | 464 | (SCM sock, SCM level, SCM optname), |
72e3dae1 KR |
465 | "Return an option value from socket port @var{sock}.\n" |
466 | "\n" | |
467 | "@var{level} is an integer specifying a protocol layer, either\n" | |
468 | "@code{SOL_SOCKET} for socket level options, or a protocol\n" | |
469 | "number from the @code{IPPROTO} constants or @code{getprotoent}\n" | |
470 | "(@pxref{Network Databases}).\n" | |
471 | "\n" | |
472 | "@defvar SOL_SOCKET\n" | |
473 | "@defvarx IPPROTO_IP\n" | |
474 | "@defvarx IPPROTO_TCP\n" | |
475 | "@defvarx IPPROTO_UDP\n" | |
476 | "@end defvar\n" | |
477 | "\n" | |
478 | "@var{optname} is an integer specifying an option within the\n" | |
479 | "protocol layer.\n" | |
480 | "\n" | |
481 | "For @code{SOL_SOCKET} level the following @var{optname}s are\n" | |
482 | "defined (when provided by the system). For their meaning see\n" | |
483 | "@ref{Socket-Level Options,,, libc, The GNU C Library Reference\n" | |
484 | "Manual}, or @command{man 7 socket}.\n" | |
485 | "\n" | |
486 | "@defvar SO_DEBUG\n" | |
487 | "@defvarx SO_REUSEADDR\n" | |
488 | "@defvarx SO_STYLE\n" | |
489 | "@defvarx SO_TYPE\n" | |
490 | "@defvarx SO_ERROR\n" | |
491 | "@defvarx SO_DONTROUTE\n" | |
492 | "@defvarx SO_BROADCAST\n" | |
493 | "@defvarx SO_SNDBUF\n" | |
494 | "@defvarx SO_RCVBUF\n" | |
495 | "@defvarx SO_KEEPALIVE\n" | |
496 | "@defvarx SO_OOBINLINE\n" | |
497 | "@defvarx SO_NO_CHECK\n" | |
498 | "@defvarx SO_PRIORITY\n" | |
499 | "The value returned is an integer.\n" | |
500 | "@end defvar\n" | |
501 | "\n" | |
502 | "@defvar SO_LINGER\n" | |
503 | "The @var{value} returned is a pair of integers\n" | |
504 | "@code{(@var{ENABLE} . @var{TIMEOUT})}. On old systems without\n" | |
505 | "timeout support (ie.@: without @code{struct linger}), only\n" | |
506 | "@var{ENABLE} has an effect but the value in Guile is always a\n" | |
507 | "pair.\n" | |
508 | "@end defvar") | |
1bbd0b84 | 509 | #define FUNC_NAME s_scm_getsockopt |
0f2d19dd | 510 | { |
370312ae | 511 | int fd; |
439006bf | 512 | /* size of optval is the largest supported option. */ |
370312ae GH |
513 | #ifdef HAVE_STRUCT_LINGER |
514 | char optval[sizeof (struct linger)]; | |
5ee417fc | 515 | socklen_t optlen = sizeof (struct linger); |
370312ae | 516 | #else |
1be6b49c | 517 | char optval[sizeof (size_t)]; |
5ee417fc | 518 | socklen_t optlen = sizeof (size_t); |
370312ae GH |
519 | #endif |
520 | int ilevel; | |
521 | int ioptname; | |
0f2d19dd | 522 | |
78446828 | 523 | sock = SCM_COERCE_OUTPORT (sock); |
2cf6d014 | 524 | SCM_VALIDATE_OPFPORT (1, sock); |
7cee5b31 MV |
525 | ilevel = scm_to_int (level); |
526 | ioptname = scm_to_int (optname); | |
0f2d19dd | 527 | |
ee149d03 | 528 | fd = SCM_FPORT_FDES (sock); |
370312ae | 529 | if (getsockopt (fd, ilevel, ioptname, (void *) optval, &optlen) == -1) |
1bbd0b84 | 530 | SCM_SYSERROR; |
1cc91f1b | 531 | |
439006bf | 532 | if (ilevel == SOL_SOCKET) |
0f2d19dd | 533 | { |
439006bf GH |
534 | #ifdef SO_LINGER |
535 | if (ioptname == SO_LINGER) | |
536 | { | |
370312ae | 537 | #ifdef HAVE_STRUCT_LINGER |
439006bf GH |
538 | struct linger *ling = (struct linger *) optval; |
539 | ||
b9bd8526 MV |
540 | return scm_cons (scm_from_long (ling->l_onoff), |
541 | scm_from_long (ling->l_linger)); | |
370312ae | 542 | #else |
b9bd8526 | 543 | return scm_cons (scm_from_long (*(int *) optval), |
7cee5b31 | 544 | scm_from_int (0)); |
0f2d19dd | 545 | #endif |
439006bf GH |
546 | } |
547 | else | |
370312ae | 548 | #endif |
439006bf | 549 | if (0 |
370312ae | 550 | #ifdef SO_SNDBUF |
439006bf | 551 | || ioptname == SO_SNDBUF |
370312ae GH |
552 | #endif |
553 | #ifdef SO_RCVBUF | |
439006bf | 554 | || ioptname == SO_RCVBUF |
370312ae | 555 | #endif |
439006bf GH |
556 | ) |
557 | { | |
b9bd8526 | 558 | return scm_from_size_t (*(size_t *) optval); |
439006bf GH |
559 | } |
560 | } | |
b9bd8526 | 561 | return scm_from_int (*(int *) optval); |
0f2d19dd | 562 | } |
1bbd0b84 | 563 | #undef FUNC_NAME |
0f2d19dd | 564 | |
a1ec6916 | 565 | SCM_DEFINE (scm_setsockopt, "setsockopt", 4, 0, 0, |
1bbd0b84 | 566 | (SCM sock, SCM level, SCM optname, SCM value), |
72e3dae1 KR |
567 | "Set an option on socket port @var{sock}. The return value is\n" |
568 | "unspecified.\n" | |
569 | "\n" | |
570 | "@var{level} is an integer specifying a protocol layer, either\n" | |
571 | "@code{SOL_SOCKET} for socket level options, or a protocol\n" | |
572 | "number from the @code{IPPROTO} constants or @code{getprotoent}\n" | |
573 | "(@pxref{Network Databases}).\n" | |
574 | "\n" | |
575 | "@defvar SOL_SOCKET\n" | |
576 | "@defvarx IPPROTO_IP\n" | |
577 | "@defvarx IPPROTO_TCP\n" | |
578 | "@defvarx IPPROTO_UDP\n" | |
579 | "@end defvar\n" | |
580 | "\n" | |
581 | "@var{optname} is an integer specifying an option within the\n" | |
582 | "protocol layer.\n" | |
583 | "\n" | |
584 | "For @code{SOL_SOCKET} level the following @var{optname}s are\n" | |
585 | "defined (when provided by the system). For their meaning see\n" | |
586 | "@ref{Socket-Level Options,,, libc, The GNU C Library Reference\n" | |
587 | "Manual}, or @command{man 7 socket}.\n" | |
588 | "\n" | |
589 | "@defvar SO_DEBUG\n" | |
590 | "@defvarx SO_REUSEADDR\n" | |
591 | "@defvarx SO_STYLE\n" | |
592 | "@defvarx SO_TYPE\n" | |
593 | "@defvarx SO_ERROR\n" | |
594 | "@defvarx SO_DONTROUTE\n" | |
595 | "@defvarx SO_BROADCAST\n" | |
596 | "@defvarx SO_SNDBUF\n" | |
597 | "@defvarx SO_RCVBUF\n" | |
598 | "@defvarx SO_KEEPALIVE\n" | |
599 | "@defvarx SO_OOBINLINE\n" | |
600 | "@defvarx SO_NO_CHECK\n" | |
601 | "@defvarx SO_PRIORITY\n" | |
602 | "@var{value} is an integer.\n" | |
603 | "@end defvar\n" | |
604 | "\n" | |
605 | "@defvar SO_LINGER\n" | |
606 | "@var{value} is a pair of integers @code{(@var{ENABLE}\n" | |
607 | ". @var{TIMEOUT})}. On old systems without timeout support\n" | |
608 | "(ie.@: without @code{struct linger}), only @var{ENABLE} has an\n" | |
609 | "effect but the value in Guile is always a pair.\n" | |
610 | "@end defvar\n" | |
611 | "\n" | |
612 | "@c Note that we refer only to ``man ip'' here. On GNU/Linux it's\n" | |
613 | "@c ``man 7 ip'' but on NetBSD it's ``man 4 ip''.\n" | |
614 | "@c \n" | |
615 | "For IP level (@code{IPPROTO_IP}) the following @var{optname}s\n" | |
616 | "are defined (when provided by the system). See @command{man\n" | |
617 | "ip} for what they mean.\n" | |
618 | "\n" | |
619 | "@defvar IP_ADD_MEMBERSHIP\n" | |
620 | "@defvarx IP_DROP_MEMBERSHIP\n" | |
621 | "These can be used only with @code{setsockopt}, not\n" | |
622 | "@code{getsockopt}. @var{value} is a pair\n" | |
623 | "@code{(@var{MULTIADDR} . @var{INTERFACEADDR})} of IPv4\n" | |
624 | "addresses (@pxref{Network Address Conversion}).\n" | |
625 | "@var{MULTIADDR} is a multicast address to be added to or\n" | |
626 | "dropped from the interface @var{INTERFACEADDR}.\n" | |
627 | "@var{INTERFACEADDR} can be @code{INADDR_ANY} to have the system\n" | |
628 | "select the interface. @var{INTERFACEADDR} can also be an\n" | |
629 | "interface index number, on systems supporting that.") | |
1bbd0b84 | 630 | #define FUNC_NAME s_scm_setsockopt |
0f2d19dd | 631 | { |
370312ae | 632 | int fd; |
1c80707c MV |
633 | |
634 | int opt_int; | |
370312ae | 635 | #ifdef HAVE_STRUCT_LINGER |
1c80707c | 636 | struct linger opt_linger; |
370312ae | 637 | #endif |
ecc9f40f MV |
638 | |
639 | #if HAVE_STRUCT_IP_MREQ | |
1c80707c | 640 | struct ip_mreq opt_mreq; |
ecc9f40f | 641 | #endif |
1c80707c MV |
642 | |
643 | const void *optval = NULL; | |
644 | socklen_t optlen = 0; | |
645 | ||
370312ae | 646 | int ilevel, ioptname; |
439006bf | 647 | |
78446828 | 648 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf GH |
649 | |
650 | SCM_VALIDATE_OPFPORT (1, sock); | |
7cee5b31 MV |
651 | ilevel = scm_to_int (level); |
652 | ioptname = scm_to_int (optname); | |
439006bf | 653 | |
ee149d03 | 654 | fd = SCM_FPORT_FDES (sock); |
1c80707c | 655 | |
439006bf | 656 | if (ilevel == SOL_SOCKET) |
370312ae | 657 | { |
439006bf GH |
658 | #ifdef SO_LINGER |
659 | if (ioptname == SO_LINGER) | |
660 | { | |
370312ae | 661 | #ifdef HAVE_STRUCT_LINGER |
d2e53ed6 | 662 | SCM_ASSERT (scm_is_pair (value), value, SCM_ARG4, FUNC_NAME); |
1c80707c MV |
663 | opt_linger.l_onoff = scm_to_int (SCM_CAR (value)); |
664 | opt_linger.l_linger = scm_to_int (SCM_CDR (value)); | |
665 | optlen = sizeof (struct linger); | |
666 | optval = &opt_linger; | |
370312ae | 667 | #else |
d2e53ed6 | 668 | SCM_ASSERT (scm_is_pair (value), value, SCM_ARG4, FUNC_NAME); |
1c80707c | 669 | opt_int = scm_to_int (SCM_CAR (value)); |
439006bf | 670 | /* timeout is ignored, but may as well validate it. */ |
1c80707c MV |
671 | scm_to_int (SCM_CDR (value)); |
672 | optlen = sizeof (int); | |
673 | optval = &opt_int; | |
439006bf GH |
674 | #endif |
675 | } | |
676 | else | |
677 | #endif | |
678 | if (0 | |
370312ae | 679 | #ifdef SO_SNDBUF |
439006bf | 680 | || ioptname == SO_SNDBUF |
370312ae GH |
681 | #endif |
682 | #ifdef SO_RCVBUF | |
439006bf | 683 | || ioptname == SO_RCVBUF |
370312ae | 684 | #endif |
439006bf GH |
685 | ) |
686 | { | |
1c80707c MV |
687 | opt_int = scm_to_int (value); |
688 | optlen = sizeof (size_t); | |
689 | optval = &opt_int; | |
439006bf GH |
690 | } |
691 | } | |
1c80707c | 692 | |
ecc9f40f | 693 | #if HAVE_STRUCT_IP_MREQ |
1c80707c MV |
694 | if (ilevel == IPPROTO_IP && |
695 | (ioptname == IP_ADD_MEMBERSHIP || ioptname == IP_DROP_MEMBERSHIP)) | |
0f2d19dd | 696 | { |
1c80707c MV |
697 | /* Fourth argument must be a pair of addresses. */ |
698 | SCM_ASSERT (scm_is_pair (value), value, SCM_ARG4, FUNC_NAME); | |
699 | opt_mreq.imr_multiaddr.s_addr = htonl (scm_to_ulong (SCM_CAR (value))); | |
700 | opt_mreq.imr_interface.s_addr = htonl (scm_to_ulong (SCM_CDR (value))); | |
701 | optlen = sizeof (opt_mreq); | |
702 | optval = &opt_mreq; | |
703 | } | |
ecc9f40f | 704 | #endif |
439006bf | 705 | |
1c80707c MV |
706 | if (optval == NULL) |
707 | { | |
708 | /* Most options take an int. */ | |
709 | opt_int = scm_to_int (value); | |
710 | optlen = sizeof (int); | |
711 | optval = &opt_int; | |
0f2d19dd | 712 | } |
1c80707c MV |
713 | |
714 | if (setsockopt (fd, ilevel, ioptname, optval, optlen) == -1) | |
1bbd0b84 | 715 | SCM_SYSERROR; |
370312ae | 716 | return SCM_UNSPECIFIED; |
0f2d19dd | 717 | } |
1bbd0b84 | 718 | #undef FUNC_NAME |
0f2d19dd | 719 | |
a1ec6916 | 720 | SCM_DEFINE (scm_shutdown, "shutdown", 2, 0, 0, |
1bbd0b84 | 721 | (SCM sock, SCM how), |
b380b885 | 722 | "Sockets can be closed simply by using @code{close-port}. The\n" |
bb2c02f2 | 723 | "@code{shutdown} procedure allows reception or transmission on a\n" |
b380b885 MD |
724 | "connection to be shut down individually, according to the parameter\n" |
725 | "@var{how}:\n\n" | |
726 | "@table @asis\n" | |
727 | "@item 0\n" | |
728 | "Stop receiving data for this socket. If further data arrives, reject it.\n" | |
729 | "@item 1\n" | |
730 | "Stop trying to transmit data from this socket. Discard any\n" | |
731 | "data waiting to be sent. Stop looking for acknowledgement of\n" | |
732 | "data already sent; don't retransmit it if it is lost.\n" | |
733 | "@item 2\n" | |
734 | "Stop both reception and transmission.\n" | |
735 | "@end table\n\n" | |
736 | "The return value is unspecified.") | |
1bbd0b84 | 737 | #define FUNC_NAME s_scm_shutdown |
0f2d19dd | 738 | { |
370312ae | 739 | int fd; |
78446828 | 740 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 741 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 742 | fd = SCM_FPORT_FDES (sock); |
7cee5b31 | 743 | if (shutdown (fd, scm_to_signed_integer (how, 0, 2)) == -1) |
1bbd0b84 | 744 | SCM_SYSERROR; |
370312ae GH |
745 | return SCM_UNSPECIFIED; |
746 | } | |
1bbd0b84 | 747 | #undef FUNC_NAME |
0f2d19dd | 748 | |
370312ae GH |
749 | /* convert fam/address/args into a sockaddr of the appropriate type. |
750 | args is modified by removing the arguments actually used. | |
751 | which_arg and proc are used when reporting errors: | |
752 | which_arg is the position of address in the original argument list. | |
753 | proc is the name of the original procedure. | |
754 | size returns the size of the structure allocated. */ | |
755 | ||
370312ae | 756 | static struct sockaddr * |
439006bf GH |
757 | scm_fill_sockaddr (int fam, SCM address, SCM *args, int which_arg, |
758 | const char *proc, int *size) | |
3453619b | 759 | #define FUNC_NAME proc |
370312ae GH |
760 | { |
761 | switch (fam) | |
0f2d19dd | 762 | { |
370312ae GH |
763 | case AF_INET: |
764 | { | |
370312ae | 765 | struct sockaddr_in *soka; |
3453619b GH |
766 | unsigned long addr; |
767 | int port; | |
370312ae | 768 | |
3453619b GH |
769 | SCM_VALIDATE_ULONG_COPY (which_arg, address, addr); |
770 | SCM_VALIDATE_CONS (which_arg + 1, *args); | |
7cee5b31 | 771 | port = scm_to_int (SCM_CAR (*args)); |
3453619b | 772 | *args = SCM_CDR (*args); |
67329a9e | 773 | soka = (struct sockaddr_in *) scm_malloc (sizeof (struct sockaddr_in)); |
439006bf GH |
774 | if (!soka) |
775 | scm_memory_error (proc); | |
93b047f4 | 776 | #if HAVE_STRUCT_SOCKADDR_SIN_LEN |
3453619b GH |
777 | soka->sin_len = sizeof (struct sockaddr_in); |
778 | #endif | |
370312ae | 779 | soka->sin_family = AF_INET; |
3453619b GH |
780 | soka->sin_addr.s_addr = htonl (addr); |
781 | soka->sin_port = htons (port); | |
370312ae GH |
782 | *size = sizeof (struct sockaddr_in); |
783 | return (struct sockaddr *) soka; | |
784 | } | |
a57a0b1e | 785 | #ifdef HAVE_IPV6 |
3453619b GH |
786 | case AF_INET6: |
787 | { | |
788 | /* see RFC2553. */ | |
789 | int port; | |
790 | struct sockaddr_in6 *soka; | |
791 | unsigned long flowinfo = 0; | |
792 | unsigned long scope_id = 0; | |
793 | ||
3453619b | 794 | SCM_VALIDATE_CONS (which_arg + 1, *args); |
7cee5b31 | 795 | port = scm_to_int (SCM_CAR (*args)); |
3453619b | 796 | *args = SCM_CDR (*args); |
d2e53ed6 | 797 | if (scm_is_pair (*args)) |
3453619b GH |
798 | { |
799 | SCM_VALIDATE_ULONG_COPY (which_arg + 2, SCM_CAR (*args), flowinfo); | |
800 | *args = SCM_CDR (*args); | |
d2e53ed6 | 801 | if (scm_is_pair (*args)) |
3453619b GH |
802 | { |
803 | SCM_VALIDATE_ULONG_COPY (which_arg + 3, SCM_CAR (*args), | |
804 | scope_id); | |
805 | *args = SCM_CDR (*args); | |
806 | } | |
807 | } | |
67329a9e | 808 | soka = (struct sockaddr_in6 *) scm_malloc (sizeof (struct sockaddr_in6)); |
3453619b GH |
809 | if (!soka) |
810 | scm_memory_error (proc); | |
93b047f4 | 811 | #if HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN |
3453619b GH |
812 | soka->sin6_len = sizeof (struct sockaddr_in6); |
813 | #endif | |
814 | soka->sin6_family = AF_INET6; | |
7cee5b31 | 815 | scm_to_ipv6 (soka->sin6_addr.s6_addr, address); |
5a525b84 | 816 | soka->sin6_port = htons (port); |
3453619b | 817 | soka->sin6_flowinfo = flowinfo; |
5a525b84 | 818 | #ifdef HAVE_SIN6_SCOPE_ID |
3453619b | 819 | soka->sin6_scope_id = scope_id; |
5a525b84 | 820 | #endif |
3453619b GH |
821 | *size = sizeof (struct sockaddr_in6); |
822 | return (struct sockaddr *) soka; | |
823 | } | |
824 | #endif | |
1ba8c23a | 825 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS |
370312ae GH |
826 | case AF_UNIX: |
827 | { | |
828 | struct sockaddr_un *soka; | |
439006bf | 829 | int addr_size; |
7f9994d9 MV |
830 | char *c_address; |
831 | ||
832 | scm_frame_begin (0); | |
833 | ||
834 | c_address = scm_to_locale_string (address); | |
835 | scm_frame_free (c_address); | |
370312ae | 836 | |
439006bf GH |
837 | /* the static buffer size in sockaddr_un seems to be arbitrary |
838 | and not necessarily a hard limit. e.g., the glibc manual | |
839 | suggests it may be possible to declare it size 0. let's | |
840 | ignore it. if the O/S doesn't like the size it will cause | |
841 | connect/bind etc., to fail. sun_path is always the last | |
842 | member of the structure. */ | |
843 | addr_size = sizeof (struct sockaddr_un) | |
7f9994d9 | 844 | + max (0, strlen (c_address) + 1 - (sizeof soka->sun_path)); |
67329a9e | 845 | soka = (struct sockaddr_un *) scm_malloc (addr_size); |
439006bf GH |
846 | memset (soka, 0, addr_size); /* for sun_len: see sin_len above. */ |
847 | soka->sun_family = AF_UNIX; | |
7f9994d9 | 848 | strcpy (soka->sun_path, c_address); |
439006bf | 849 | *size = SUN_LEN (soka); |
7f9994d9 MV |
850 | |
851 | scm_frame_end (); | |
370312ae GH |
852 | return (struct sockaddr *) soka; |
853 | } | |
0e958795 | 854 | #endif |
370312ae | 855 | default: |
e11e83f3 | 856 | scm_out_of_range (proc, scm_from_int (fam)); |
0f2d19dd | 857 | } |
0f2d19dd | 858 | } |
3453619b | 859 | #undef FUNC_NAME |
370312ae | 860 | |
a1ec6916 | 861 | SCM_DEFINE (scm_connect, "connect", 3, 0, 1, |
1bbd0b84 | 862 | (SCM sock, SCM fam, SCM address, SCM args), |
eefae538 | 863 | "Initiate a connection from a socket using a specified address\n" |
3453619b GH |
864 | "family to the address\n" |
865 | "specified by @var{address} and possibly @var{args}.\n" | |
866 | "The format required for @var{address}\n" | |
867 | "and @var{args} depends on the family of the socket.\n\n" | |
b380b885 | 868 | "For a socket of family @code{AF_UNIX},\n" |
3453619b | 869 | "only @var{address} is specified and must be a string with the\n" |
b380b885 MD |
870 | "filename where the socket is to be created.\n\n" |
871 | "For a socket of family @code{AF_INET},\n" | |
3453619b GH |
872 | "@var{address} must be an integer IPv4 host address and\n" |
873 | "@var{args} must be a single integer port number.\n\n" | |
874 | "For a socket of family @code{AF_INET6},\n" | |
875 | "@var{address} must be an integer IPv6 host address and\n" | |
876 | "@var{args} may be up to three integers:\n" | |
877 | "port [flowinfo] [scope_id],\n" | |
878 | "where flowinfo and scope_id default to zero.\n\n" | |
b380b885 | 879 | "The return value is unspecified.") |
1bbd0b84 | 880 | #define FUNC_NAME s_scm_connect |
0f2d19dd | 881 | { |
370312ae GH |
882 | int fd; |
883 | struct sockaddr *soka; | |
439006bf | 884 | int size; |
0f2d19dd | 885 | |
78446828 | 886 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 887 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 888 | fd = SCM_FPORT_FDES (sock); |
7cee5b31 | 889 | soka = scm_fill_sockaddr (scm_to_int (fam), address, &args, 3, FUNC_NAME, |
439006bf | 890 | &size); |
370312ae | 891 | if (connect (fd, soka, size) == -1) |
439006bf GH |
892 | { |
893 | int save_errno = errno; | |
894 | ||
895 | free (soka); | |
896 | errno = save_errno; | |
897 | SCM_SYSERROR; | |
898 | } | |
899 | free (soka); | |
370312ae | 900 | return SCM_UNSPECIFIED; |
0f2d19dd | 901 | } |
1bbd0b84 | 902 | #undef FUNC_NAME |
0f2d19dd | 903 | |
a1ec6916 | 904 | SCM_DEFINE (scm_bind, "bind", 3, 0, 1, |
1bbd0b84 | 905 | (SCM sock, SCM fam, SCM address, SCM args), |
eefae538 | 906 | "Assign an address to the socket port @var{sock}.\n" |
b380b885 MD |
907 | "Generally this only needs to be done for server sockets,\n" |
908 | "so they know where to look for incoming connections. A socket\n" | |
909 | "without an address will be assigned one automatically when it\n" | |
910 | "starts communicating.\n\n" | |
eefae538 GH |
911 | "The format of @var{address} and @var{args} depends\n" |
912 | "on the family of the socket.\n\n" | |
b380b885 | 913 | "For a socket of family @code{AF_UNIX}, only @var{address}\n" |
eefae538 GH |
914 | "is specified and must be a string with the filename where\n" |
915 | "the socket is to be created.\n\n" | |
916 | "For a socket of family @code{AF_INET}, @var{address}\n" | |
917 | "must be an integer IPv4 address and @var{args}\n" | |
918 | "must be a single integer port number.\n\n" | |
919 | "The values of the following variables can also be used for\n" | |
920 | "@var{address}:\n\n" | |
b380b885 MD |
921 | "@defvar INADDR_ANY\n" |
922 | "Allow connections from any address.\n" | |
923 | "@end defvar\n\n" | |
924 | "@defvar INADDR_LOOPBACK\n" | |
925 | "The address of the local host using the loopback device.\n" | |
926 | "@end defvar\n\n" | |
927 | "@defvar INADDR_BROADCAST\n" | |
928 | "The broadcast address on the local network.\n" | |
929 | "@end defvar\n\n" | |
930 | "@defvar INADDR_NONE\n" | |
931 | "No address.\n" | |
932 | "@end defvar\n\n" | |
eefae538 GH |
933 | "For a socket of family @code{AF_INET6}, @var{address}\n" |
934 | "must be an integer IPv6 address and @var{args}\n" | |
935 | "may be up to three integers:\n" | |
936 | "port [flowinfo] [scope_id],\n" | |
937 | "where flowinfo and scope_id default to zero.\n\n" | |
b380b885 | 938 | "The return value is unspecified.") |
1bbd0b84 | 939 | #define FUNC_NAME s_scm_bind |
370312ae | 940 | { |
370312ae | 941 | struct sockaddr *soka; |
439006bf | 942 | int size; |
370312ae GH |
943 | int fd; |
944 | ||
78446828 | 945 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf | 946 | SCM_VALIDATE_OPFPORT (1, sock); |
7cee5b31 | 947 | soka = scm_fill_sockaddr (scm_to_int (fam), address, &args, 3, FUNC_NAME, |
439006bf | 948 | &size); |
ee149d03 | 949 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
950 | if (bind (fd, soka, size) == -1) |
951 | { | |
952 | int save_errno = errno; | |
953 | ||
954 | free (soka); | |
955 | errno = save_errno; | |
1bbd0b84 | 956 | SCM_SYSERROR; |
439006bf GH |
957 | } |
958 | free (soka); | |
370312ae GH |
959 | return SCM_UNSPECIFIED; |
960 | } | |
1bbd0b84 | 961 | #undef FUNC_NAME |
370312ae | 962 | |
a1ec6916 | 963 | SCM_DEFINE (scm_listen, "listen", 2, 0, 0, |
1bbd0b84 | 964 | (SCM sock, SCM backlog), |
eefae538 | 965 | "Enable @var{sock} to accept connection\n" |
b380b885 MD |
966 | "requests. @var{backlog} is an integer specifying\n" |
967 | "the maximum length of the queue for pending connections.\n" | |
eefae538 GH |
968 | "If the queue fills, new clients will fail to connect until\n" |
969 | "the server calls @code{accept} to accept a connection from\n" | |
970 | "the queue.\n\n" | |
b380b885 | 971 | "The return value is unspecified.") |
1bbd0b84 | 972 | #define FUNC_NAME s_scm_listen |
370312ae GH |
973 | { |
974 | int fd; | |
78446828 | 975 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 976 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 977 | fd = SCM_FPORT_FDES (sock); |
7cee5b31 | 978 | if (listen (fd, scm_to_int (backlog)) == -1) |
1bbd0b84 | 979 | SCM_SYSERROR; |
370312ae GH |
980 | return SCM_UNSPECIFIED; |
981 | } | |
1bbd0b84 | 982 | #undef FUNC_NAME |
370312ae GH |
983 | |
984 | /* Put the components of a sockaddr into a new SCM vector. */ | |
370312ae | 985 | static SCM |
aca23b65 MV |
986 | scm_addr_vector (const struct sockaddr *address, int addr_size, |
987 | const char *proc) | |
0f2d19dd | 988 | { |
370312ae | 989 | short int fam = address->sa_family; |
1d1559ce | 990 | SCM result =SCM_EOL; |
34d19ef6 | 991 | |
439006bf | 992 | |
5a525b84 | 993 | switch (fam) |
0f2d19dd | 994 | { |
5a525b84 GH |
995 | case AF_INET: |
996 | { | |
e1368a8d | 997 | const struct sockaddr_in *nad = (struct sockaddr_in *) address; |
439006bf | 998 | |
1d1559ce | 999 | result = scm_c_make_vector (3, SCM_UNSPECIFIED); |
34d19ef6 | 1000 | |
4057a3e0 MV |
1001 | SCM_SIMPLE_VECTOR_SET(result, 0, |
1002 | scm_from_short (fam)); | |
1003 | SCM_SIMPLE_VECTOR_SET(result, 1, | |
1004 | scm_from_ulong (ntohl (nad->sin_addr.s_addr))); | |
1005 | SCM_SIMPLE_VECTOR_SET(result, 2, | |
1006 | scm_from_ushort (ntohs (nad->sin_port))); | |
5a525b84 GH |
1007 | } |
1008 | break; | |
a57a0b1e | 1009 | #ifdef HAVE_IPV6 |
5a525b84 GH |
1010 | case AF_INET6: |
1011 | { | |
e1368a8d | 1012 | const struct sockaddr_in6 *nad = (struct sockaddr_in6 *) address; |
5a525b84 | 1013 | |
1d1559ce | 1014 | result = scm_c_make_vector (5, SCM_UNSPECIFIED); |
4057a3e0 MV |
1015 | SCM_SIMPLE_VECTOR_SET(result, 0, scm_from_short (fam)); |
1016 | SCM_SIMPLE_VECTOR_SET(result, 1, scm_from_ipv6 (nad->sin6_addr.s6_addr)); | |
1017 | SCM_SIMPLE_VECTOR_SET(result, 2, scm_from_ushort (ntohs (nad->sin6_port))); | |
1018 | SCM_SIMPLE_VECTOR_SET(result, 3, scm_from_uint32 (nad->sin6_flowinfo)); | |
5a525b84 | 1019 | #ifdef HAVE_SIN6_SCOPE_ID |
4057a3e0 | 1020 | SCM_SIMPLE_VECTOR_SET(result, 4, scm_from_ulong (nad->sin6_scope_id)); |
5a525b84 | 1021 | #else |
4057a3e0 | 1022 | SCM_SIMPLE_VECTOR_SET(result, 4, SCM_INUM0); |
0e958795 | 1023 | #endif |
5a525b84 GH |
1024 | } |
1025 | break; | |
1026 | #endif | |
1027 | #ifdef HAVE_UNIX_DOMAIN_SOCKETS | |
1028 | case AF_UNIX: | |
1029 | { | |
e1368a8d | 1030 | const struct sockaddr_un *nad = (struct sockaddr_un *) address; |
439006bf | 1031 | |
1d1559ce | 1032 | result = scm_c_make_vector (2, SCM_UNSPECIFIED); |
34d19ef6 | 1033 | |
4057a3e0 | 1034 | SCM_SIMPLE_VECTOR_SET(result, 0, scm_from_short (fam)); |
aca23b65 MV |
1035 | /* When addr_size is not enough to cover sun_path, do not try |
1036 | to access it. */ | |
1037 | if (addr_size <= offsetof (struct sockaddr_un, sun_path)) | |
4057a3e0 | 1038 | SCM_SIMPLE_VECTOR_SET(result, 1, SCM_BOOL_F); |
aca23b65 | 1039 | else |
4057a3e0 | 1040 | SCM_SIMPLE_VECTOR_SET(result, 1, scm_from_locale_string (nad->sun_path)); |
5a525b84 GH |
1041 | } |
1042 | break; | |
1043 | #endif | |
1044 | default: | |
1045 | scm_misc_error (proc, "Unrecognised address family: ~A", | |
e11e83f3 | 1046 | scm_list_1 (scm_from_int (fam))); |
0f2d19dd | 1047 | } |
1d1559ce | 1048 | return result; |
370312ae GH |
1049 | } |
1050 | ||
439006bf GH |
1051 | /* calculate the size of a buffer large enough to hold any supported |
1052 | sockaddr type. if the buffer isn't large enough, certain system | |
1053 | calls will return a truncated address. */ | |
370312ae | 1054 | |
439006bf GH |
1055 | #if defined (HAVE_UNIX_DOMAIN_SOCKETS) |
1056 | #define MAX_SIZE_UN sizeof (struct sockaddr_un) | |
0e958795 | 1057 | #else |
439006bf | 1058 | #define MAX_SIZE_UN 0 |
0e958795 | 1059 | #endif |
439006bf | 1060 | |
a57a0b1e | 1061 | #if defined (HAVE_IPV6) |
5a525b84 GH |
1062 | #define MAX_SIZE_IN6 sizeof (struct sockaddr_in6) |
1063 | #else | |
1064 | #define MAX_SIZE_IN6 0 | |
1065 | #endif | |
1066 | ||
1067 | #define MAX_ADDR_SIZE max (max (sizeof (struct sockaddr_in), MAX_SIZE_IN6),\ | |
1068 | MAX_SIZE_UN) | |
0f2d19dd | 1069 | |
a1ec6916 | 1070 | SCM_DEFINE (scm_accept, "accept", 1, 0, 0, |
1bbd0b84 | 1071 | (SCM sock), |
eefae538 GH |
1072 | "Accept a connection on a bound, listening socket.\n" |
1073 | "If there\n" | |
1074 | "are no pending connections in the queue, wait until\n" | |
1075 | "one is available unless the non-blocking option has been\n" | |
1076 | "set on the socket.\n\n" | |
b380b885 | 1077 | "The return value is a\n" |
eefae538 GH |
1078 | "pair in which the @emph{car} is a new socket port for the\n" |
1079 | "connection and\n" | |
1080 | "the @emph{cdr} is an object with address information about the\n" | |
1081 | "client which initiated the connection.\n\n" | |
1082 | "@var{sock} does not become part of the\n" | |
b380b885 | 1083 | "connection and will continue to accept new requests.") |
1bbd0b84 | 1084 | #define FUNC_NAME s_scm_accept |
0f2d19dd | 1085 | { |
370312ae GH |
1086 | int fd; |
1087 | int newfd; | |
1088 | SCM address; | |
1089 | SCM newsock; | |
5ee417fc | 1090 | socklen_t addr_size = MAX_ADDR_SIZE; |
439006bf GH |
1091 | char max_addr[MAX_ADDR_SIZE]; |
1092 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
370312ae | 1093 | |
78446828 | 1094 | sock = SCM_COERCE_OUTPORT (sock); |
439006bf | 1095 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 1096 | fd = SCM_FPORT_FDES (sock); |
439006bf GH |
1097 | newfd = accept (fd, addr, &addr_size); |
1098 | if (newfd == -1) | |
1099 | SCM_SYSERROR; | |
1100 | newsock = SCM_SOCK_FD_TO_PORT (newfd); | |
aca23b65 | 1101 | address = scm_addr_vector (addr, addr_size, FUNC_NAME); |
370312ae | 1102 | return scm_cons (newsock, address); |
0f2d19dd | 1103 | } |
1bbd0b84 | 1104 | #undef FUNC_NAME |
0f2d19dd | 1105 | |
a1ec6916 | 1106 | SCM_DEFINE (scm_getsockname, "getsockname", 1, 0, 0, |
1bbd0b84 | 1107 | (SCM sock), |
eefae538 | 1108 | "Return the address of @var{sock}, in the same form as the\n" |
1e6808ea MG |
1109 | "object returned by @code{accept}. On many systems the address\n" |
1110 | "of a socket in the @code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 1111 | #define FUNC_NAME s_scm_getsockname |
0f2d19dd | 1112 | { |
370312ae | 1113 | int fd; |
5ee417fc | 1114 | socklen_t addr_size = MAX_ADDR_SIZE; |
439006bf GH |
1115 | char max_addr[MAX_ADDR_SIZE]; |
1116 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
1117 | ||
78446828 | 1118 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1119 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 1120 | fd = SCM_FPORT_FDES (sock); |
439006bf | 1121 | if (getsockname (fd, addr, &addr_size) == -1) |
1bbd0b84 | 1122 | SCM_SYSERROR; |
aca23b65 | 1123 | return scm_addr_vector (addr, addr_size, FUNC_NAME); |
0f2d19dd | 1124 | } |
1bbd0b84 | 1125 | #undef FUNC_NAME |
0f2d19dd | 1126 | |
a1ec6916 | 1127 | SCM_DEFINE (scm_getpeername, "getpeername", 1, 0, 0, |
1bbd0b84 | 1128 | (SCM sock), |
eefae538 | 1129 | "Return the address that @var{sock}\n" |
1e6808ea MG |
1130 | "is connected to, in the same form as the object returned by\n" |
1131 | "@code{accept}. On many systems the address of a socket in the\n" | |
1132 | "@code{AF_FILE} namespace cannot be read.") | |
1bbd0b84 | 1133 | #define FUNC_NAME s_scm_getpeername |
0f2d19dd | 1134 | { |
370312ae | 1135 | int fd; |
5ee417fc | 1136 | socklen_t addr_size = MAX_ADDR_SIZE; |
439006bf GH |
1137 | char max_addr[MAX_ADDR_SIZE]; |
1138 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
1139 | ||
78446828 | 1140 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1141 | SCM_VALIDATE_OPFPORT (1, sock); |
ee149d03 | 1142 | fd = SCM_FPORT_FDES (sock); |
439006bf | 1143 | if (getpeername (fd, addr, &addr_size) == -1) |
1bbd0b84 | 1144 | SCM_SYSERROR; |
aca23b65 | 1145 | return scm_addr_vector (addr, addr_size, FUNC_NAME); |
0f2d19dd | 1146 | } |
1bbd0b84 | 1147 | #undef FUNC_NAME |
0f2d19dd | 1148 | |
a1ec6916 | 1149 | SCM_DEFINE (scm_recv, "recv!", 2, 1, 0, |
1bbd0b84 | 1150 | (SCM sock, SCM buf, SCM flags), |
eefae538 GH |
1151 | "Receive data from a socket port.\n" |
1152 | "@var{sock} must already\n" | |
b380b885 MD |
1153 | "be bound to the address from which data is to be received.\n" |
1154 | "@var{buf} is a string into which\n" | |
eefae538 GH |
1155 | "the data will be written. The size of @var{buf} limits\n" |
1156 | "the amount of\n" | |
b380b885 | 1157 | "data which can be received: in the case of packet\n" |
eefae538 GH |
1158 | "protocols, if a packet larger than this limit is encountered\n" |
1159 | "then some data\n" | |
b380b885 MD |
1160 | "will be irrevocably lost.\n\n" |
1161 | "The optional @var{flags} argument is a value or\n" | |
1162 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" | |
eefae538 GH |
1163 | "The value returned is the number of bytes read from the\n" |
1164 | "socket.\n\n" | |
1165 | "Note that the data is read directly from the socket file\n" | |
1166 | "descriptor:\n" | |
09831f94 | 1167 | "any unread buffered port data is ignored.") |
1bbd0b84 | 1168 | #define FUNC_NAME s_scm_recv |
0f2d19dd | 1169 | { |
370312ae GH |
1170 | int rv; |
1171 | int fd; | |
1172 | int flg; | |
cc95e00a MV |
1173 | char *dest; |
1174 | size_t len; | |
370312ae | 1175 | |
34d19ef6 HWN |
1176 | SCM_VALIDATE_OPFPORT (1, sock); |
1177 | SCM_VALIDATE_STRING (2, buf); | |
7cee5b31 MV |
1178 | if (SCM_UNBNDP (flags)) |
1179 | flg = 0; | |
1180 | else | |
1181 | flg = scm_to_int (flags); | |
ee149d03 | 1182 | fd = SCM_FPORT_FDES (sock); |
370312ae | 1183 | |
cc95e00a MV |
1184 | len = scm_i_string_length (buf); |
1185 | dest = scm_i_string_writable_chars (buf); | |
1186 | SCM_SYSCALL (rv = recv (fd, dest, len, flg)); | |
1187 | scm_i_string_stop_writing (); | |
1188 | ||
370312ae | 1189 | if (rv == -1) |
1bbd0b84 | 1190 | SCM_SYSERROR; |
370312ae | 1191 | |
396e5506 | 1192 | scm_remember_upto_here_1 (buf); |
7cee5b31 | 1193 | return scm_from_int (rv); |
370312ae | 1194 | } |
1bbd0b84 | 1195 | #undef FUNC_NAME |
370312ae | 1196 | |
a1ec6916 | 1197 | SCM_DEFINE (scm_send, "send", 2, 1, 0, |
1bbd0b84 | 1198 | (SCM sock, SCM message, SCM flags), |
eefae538 GH |
1199 | "Transmit the string @var{message} on a socket port @var{sock}.\n" |
1200 | "@var{sock} must already be bound to a destination address. The\n" | |
1201 | "value returned is the number of bytes transmitted --\n" | |
1202 | "it's possible for\n" | |
1203 | "this to be less than the length of @var{message}\n" | |
1204 | "if the socket is\n" | |
1205 | "set to be non-blocking. The optional @var{flags} argument\n" | |
1206 | "is a value or\n" | |
b380b885 | 1207 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" |
eefae538 GH |
1208 | "Note that the data is written directly to the socket\n" |
1209 | "file descriptor:\n" | |
b380b885 | 1210 | "any unflushed buffered port data is ignored.") |
1bbd0b84 | 1211 | #define FUNC_NAME s_scm_send |
370312ae GH |
1212 | { |
1213 | int rv; | |
1214 | int fd; | |
1215 | int flg; | |
cc95e00a MV |
1216 | const char *src; |
1217 | size_t len; | |
370312ae | 1218 | |
78446828 | 1219 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1220 | SCM_VALIDATE_OPFPORT (1, sock); |
a6d9e5ab | 1221 | SCM_VALIDATE_STRING (2, message); |
7cee5b31 MV |
1222 | if (SCM_UNBNDP (flags)) |
1223 | flg = 0; | |
1224 | else | |
1225 | flg = scm_to_int (flags); | |
ee149d03 | 1226 | fd = SCM_FPORT_FDES (sock); |
370312ae | 1227 | |
cc95e00a MV |
1228 | len = scm_i_string_length (message); |
1229 | src = scm_i_string_writable_chars (message); | |
1230 | SCM_SYSCALL (rv = send (fd, src, len, flg)); | |
1231 | scm_i_string_stop_writing (); | |
1232 | ||
370312ae | 1233 | if (rv == -1) |
1bbd0b84 | 1234 | SCM_SYSERROR; |
396e5506 MV |
1235 | |
1236 | scm_remember_upto_here_1 (message); | |
7cee5b31 | 1237 | return scm_from_int (rv); |
370312ae | 1238 | } |
1bbd0b84 | 1239 | #undef FUNC_NAME |
370312ae | 1240 | |
a1ec6916 | 1241 | SCM_DEFINE (scm_recvfrom, "recvfrom!", 2, 3, 0, |
60d02d09 | 1242 | (SCM sock, SCM str, SCM flags, SCM start, SCM end), |
eefae538 | 1243 | "Return data from the socket port @var{sock} and also\n" |
1e6808ea | 1244 | "information about where the data was received from.\n" |
eefae538 | 1245 | "@var{sock} must already be bound to the address from which\n" |
1e6808ea MG |
1246 | "data is to be received. @code{str}, is a string into which the\n" |
1247 | "data will be written. The size of @var{str} limits the amount\n" | |
1248 | "of data which can be received: in the case of packet protocols,\n" | |
1249 | "if a packet larger than this limit is encountered then some\n" | |
eefae538 | 1250 | "data will be irrevocably lost.\n\n" |
1e6808ea | 1251 | "The optional @var{flags} argument is a value or bitwise OR of\n" |
eefae538 | 1252 | "@code{MSG_OOB}, @code{MSG_PEEK}, @code{MSG_DONTROUTE} etc.\n\n" |
1e6808ea MG |
1253 | "The value returned is a pair: the @emph{car} is the number of\n" |
1254 | "bytes read from the socket and the @emph{cdr} an address object\n" | |
eefae538 GH |
1255 | "in the same form as returned by @code{accept}. The address\n" |
1256 | "will given as @code{#f} if not available, as is usually the\n" | |
1257 | "case for stream sockets.\n\n" | |
1e6808ea | 1258 | "The @var{start} and @var{end} arguments specify a substring of\n" |
eefae538 | 1259 | "@var{str} to which the data should be written.\n\n" |
1e6808ea MG |
1260 | "Note that the data is read directly from the socket file\n" |
1261 | "descriptor: any unread buffered port data is ignored.") | |
1bbd0b84 | 1262 | #define FUNC_NAME s_scm_recvfrom |
370312ae GH |
1263 | { |
1264 | int rv; | |
1265 | int fd; | |
1266 | int flg; | |
60d02d09 | 1267 | char *buf; |
396e5506 MV |
1268 | size_t offset; |
1269 | size_t cend; | |
370312ae | 1270 | SCM address; |
5ee417fc | 1271 | socklen_t addr_size = MAX_ADDR_SIZE; |
439006bf GH |
1272 | char max_addr[MAX_ADDR_SIZE]; |
1273 | struct sockaddr *addr = (struct sockaddr *) max_addr; | |
370312ae | 1274 | |
34d19ef6 | 1275 | SCM_VALIDATE_OPFPORT (1, sock); |
60d02d09 | 1276 | fd = SCM_FPORT_FDES (sock); |
396e5506 MV |
1277 | |
1278 | SCM_VALIDATE_STRING (2, str); | |
cc95e00a | 1279 | scm_i_get_substring_spec (scm_i_string_length (str), |
396e5506 MV |
1280 | start, &offset, end, &cend); |
1281 | ||
1146b6cd GH |
1282 | if (SCM_UNBNDP (flags)) |
1283 | flg = 0; | |
370312ae | 1284 | else |
60d02d09 | 1285 | SCM_VALIDATE_ULONG_COPY (3, flags, flg); |
370312ae | 1286 | |
97d0e20b GH |
1287 | /* recvfrom will not necessarily return an address. usually nothing |
1288 | is returned for stream sockets. */ | |
cc95e00a | 1289 | buf = scm_i_string_writable_chars (str); |
439006bf | 1290 | addr->sa_family = AF_UNSPEC; |
60d02d09 | 1291 | SCM_SYSCALL (rv = recvfrom (fd, buf + offset, |
1146b6cd | 1292 | cend - offset, flg, |
439006bf | 1293 | addr, &addr_size)); |
cc95e00a MV |
1294 | scm_i_string_stop_writing (); |
1295 | ||
370312ae | 1296 | if (rv == -1) |
1bbd0b84 | 1297 | SCM_SYSERROR; |
eefae538 | 1298 | if (addr->sa_family != AF_UNSPEC) |
aca23b65 | 1299 | address = scm_addr_vector (addr, addr_size, FUNC_NAME); |
370312ae GH |
1300 | else |
1301 | address = SCM_BOOL_F; | |
1302 | ||
396e5506 | 1303 | scm_remember_upto_here_1 (str); |
e11e83f3 | 1304 | return scm_cons (scm_from_int (rv), address); |
0f2d19dd | 1305 | } |
1bbd0b84 | 1306 | #undef FUNC_NAME |
0f2d19dd | 1307 | |
a1ec6916 | 1308 | SCM_DEFINE (scm_sendto, "sendto", 4, 0, 1, |
1bbd0b84 | 1309 | (SCM sock, SCM message, SCM fam, SCM address, SCM args_and_flags), |
eefae538 GH |
1310 | "Transmit the string @var{message} on the socket port\n" |
1311 | "@var{sock}. The\n" | |
1312 | "destination address is specified using the @var{fam},\n" | |
1313 | "@var{address} and\n" | |
1314 | "@var{args_and_flags} arguments, in a similar way to the\n" | |
1315 | "@code{connect} procedure. @var{args_and_flags} contains\n" | |
1316 | "the usual connection arguments optionally followed by\n" | |
1317 | "a flags argument, which is a value or\n" | |
b380b885 | 1318 | "bitwise OR of MSG_OOB, MSG_PEEK, MSG_DONTROUTE etc.\n\n" |
eefae538 GH |
1319 | "The value returned is the number of bytes transmitted --\n" |
1320 | "it's possible for\n" | |
1321 | "this to be less than the length of @var{message} if the\n" | |
1322 | "socket is\n" | |
1323 | "set to be non-blocking.\n" | |
1324 | "Note that the data is written directly to the socket\n" | |
1325 | "file descriptor:\n" | |
b380b885 | 1326 | "any unflushed buffered port data is ignored.") |
1bbd0b84 | 1327 | #define FUNC_NAME s_scm_sendto |
370312ae GH |
1328 | { |
1329 | int rv; | |
1330 | int fd; | |
1331 | int flg; | |
1332 | struct sockaddr *soka; | |
439006bf | 1333 | int size; |
370312ae | 1334 | |
78446828 | 1335 | sock = SCM_COERCE_OUTPORT (sock); |
34d19ef6 | 1336 | SCM_VALIDATE_FPORT (1, sock); |
a6d9e5ab | 1337 | SCM_VALIDATE_STRING (2, message); |
ee149d03 | 1338 | fd = SCM_FPORT_FDES (sock); |
7cee5b31 | 1339 | soka = scm_fill_sockaddr (scm_to_int (fam), address, &args_and_flags, 4, |
1bbd0b84 | 1340 | FUNC_NAME, &size); |
d2e53ed6 | 1341 | if (scm_is_null (args_and_flags)) |
370312ae GH |
1342 | flg = 0; |
1343 | else | |
1344 | { | |
34d19ef6 | 1345 | SCM_VALIDATE_CONS (5, args_and_flags); |
e4b265d8 | 1346 | flg = SCM_NUM2ULONG (5, SCM_CAR (args_and_flags)); |
370312ae | 1347 | } |
396e5506 | 1348 | SCM_SYSCALL (rv = sendto (fd, |
cc95e00a MV |
1349 | scm_i_string_chars (message), |
1350 | scm_i_string_length (message), | |
ae2fa5bc | 1351 | flg, soka, size)); |
370312ae | 1352 | if (rv == -1) |
439006bf GH |
1353 | { |
1354 | int save_errno = errno; | |
1355 | free (soka); | |
1356 | errno = save_errno; | |
1357 | SCM_SYSERROR; | |
1358 | } | |
1359 | free (soka); | |
396e5506 MV |
1360 | |
1361 | scm_remember_upto_here_1 (message); | |
e11e83f3 | 1362 | return scm_from_int (rv); |
370312ae | 1363 | } |
1bbd0b84 | 1364 | #undef FUNC_NAME |
370312ae GH |
1365 | \f |
1366 | ||
1367 | ||
1368 | void | |
0f2d19dd | 1369 | scm_init_socket () |
0f2d19dd | 1370 | { |
370312ae GH |
1371 | /* protocol families. */ |
1372 | #ifdef AF_UNSPEC | |
e11e83f3 | 1373 | scm_c_define ("AF_UNSPEC", scm_from_int (AF_UNSPEC)); |
370312ae GH |
1374 | #endif |
1375 | #ifdef AF_UNIX | |
e11e83f3 | 1376 | scm_c_define ("AF_UNIX", scm_from_int (AF_UNIX)); |
370312ae GH |
1377 | #endif |
1378 | #ifdef AF_INET | |
e11e83f3 | 1379 | scm_c_define ("AF_INET", scm_from_int (AF_INET)); |
370312ae | 1380 | #endif |
3453619b | 1381 | #ifdef AF_INET6 |
e11e83f3 | 1382 | scm_c_define ("AF_INET6", scm_from_int (AF_INET6)); |
3453619b | 1383 | #endif |
370312ae GH |
1384 | |
1385 | #ifdef PF_UNSPEC | |
e11e83f3 | 1386 | scm_c_define ("PF_UNSPEC", scm_from_int (PF_UNSPEC)); |
370312ae GH |
1387 | #endif |
1388 | #ifdef PF_UNIX | |
e11e83f3 | 1389 | scm_c_define ("PF_UNIX", scm_from_int (PF_UNIX)); |
370312ae GH |
1390 | #endif |
1391 | #ifdef PF_INET | |
e11e83f3 | 1392 | scm_c_define ("PF_INET", scm_from_int (PF_INET)); |
370312ae | 1393 | #endif |
3453619b | 1394 | #ifdef PF_INET6 |
e11e83f3 | 1395 | scm_c_define ("PF_INET6", scm_from_int (PF_INET6)); |
3453619b | 1396 | #endif |
370312ae | 1397 | |
66c73b76 GH |
1398 | /* standard addresses. */ |
1399 | #ifdef INADDR_ANY | |
b9bd8526 | 1400 | scm_c_define ("INADDR_ANY", scm_from_ulong (INADDR_ANY)); |
66c73b76 GH |
1401 | #endif |
1402 | #ifdef INADDR_BROADCAST | |
b9bd8526 | 1403 | scm_c_define ("INADDR_BROADCAST", scm_from_ulong (INADDR_BROADCAST)); |
66c73b76 GH |
1404 | #endif |
1405 | #ifdef INADDR_NONE | |
b9bd8526 | 1406 | scm_c_define ("INADDR_NONE", scm_from_ulong (INADDR_NONE)); |
66c73b76 GH |
1407 | #endif |
1408 | #ifdef INADDR_LOOPBACK | |
b9bd8526 | 1409 | scm_c_define ("INADDR_LOOPBACK", scm_from_ulong (INADDR_LOOPBACK)); |
66c73b76 GH |
1410 | #endif |
1411 | ||
6f637a1b KR |
1412 | /* socket types. |
1413 | ||
1414 | SOCK_PACKET is deliberately omitted, the GNU/Linux socket(2) and | |
1415 | packet(7) advise that it's obsolete and strongly deprecated. */ | |
1416 | ||
370312ae | 1417 | #ifdef SOCK_STREAM |
e11e83f3 | 1418 | scm_c_define ("SOCK_STREAM", scm_from_int (SOCK_STREAM)); |
370312ae GH |
1419 | #endif |
1420 | #ifdef SOCK_DGRAM | |
e11e83f3 | 1421 | scm_c_define ("SOCK_DGRAM", scm_from_int (SOCK_DGRAM)); |
370312ae | 1422 | #endif |
6f637a1b KR |
1423 | #ifdef SOCK_SEQPACKET |
1424 | scm_c_define ("SOCK_SEQPACKET", scm_from_int (SOCK_SEQPACKET)); | |
1425 | #endif | |
370312ae | 1426 | #ifdef SOCK_RAW |
e11e83f3 | 1427 | scm_c_define ("SOCK_RAW", scm_from_int (SOCK_RAW)); |
370312ae | 1428 | #endif |
6f637a1b KR |
1429 | #ifdef SOCK_RDM |
1430 | scm_c_define ("SOCK_RDM", scm_from_int (SOCK_RDM)); | |
1431 | #endif | |
370312ae | 1432 | |
8fae2bf4 KR |
1433 | /* setsockopt level. |
1434 | ||
1435 | SOL_IP, SOL_TCP and SOL_UDP are defined on gnu/linux, but not on for | |
1436 | instance NetBSD. We define IPPROTOs because that's what the posix spec | |
1437 | shows in its example at | |
1438 | ||
1439 | http://www.opengroup.org/onlinepubs/007904975/functions/getsockopt.html | |
1440 | */ | |
370312ae | 1441 | #ifdef SOL_SOCKET |
e11e83f3 | 1442 | scm_c_define ("SOL_SOCKET", scm_from_int (SOL_SOCKET)); |
370312ae | 1443 | #endif |
8fae2bf4 KR |
1444 | #ifdef IPPROTO_IP |
1445 | scm_c_define ("IPPROTO_IP", scm_from_int (IPPROTO_IP)); | |
370312ae | 1446 | #endif |
8fae2bf4 KR |
1447 | #ifdef IPPROTO_TCP |
1448 | scm_c_define ("IPPROTO_TCP", scm_from_int (IPPROTO_TCP)); | |
370312ae | 1449 | #endif |
8fae2bf4 KR |
1450 | #ifdef IPPROTO_UDP |
1451 | scm_c_define ("IPPROTO_UDP", scm_from_int (IPPROTO_UDP)); | |
370312ae GH |
1452 | #endif |
1453 | ||
1454 | /* setsockopt names. */ | |
1455 | #ifdef SO_DEBUG | |
e11e83f3 | 1456 | scm_c_define ("SO_DEBUG", scm_from_int (SO_DEBUG)); |
370312ae GH |
1457 | #endif |
1458 | #ifdef SO_REUSEADDR | |
e11e83f3 | 1459 | scm_c_define ("SO_REUSEADDR", scm_from_int (SO_REUSEADDR)); |
370312ae GH |
1460 | #endif |
1461 | #ifdef SO_STYLE | |
e11e83f3 | 1462 | scm_c_define ("SO_STYLE", scm_from_int (SO_STYLE)); |
370312ae GH |
1463 | #endif |
1464 | #ifdef SO_TYPE | |
e11e83f3 | 1465 | scm_c_define ("SO_TYPE", scm_from_int (SO_TYPE)); |
370312ae GH |
1466 | #endif |
1467 | #ifdef SO_ERROR | |
e11e83f3 | 1468 | scm_c_define ("SO_ERROR", scm_from_int (SO_ERROR)); |
370312ae GH |
1469 | #endif |
1470 | #ifdef SO_DONTROUTE | |
e11e83f3 | 1471 | scm_c_define ("SO_DONTROUTE", scm_from_int (SO_DONTROUTE)); |
370312ae GH |
1472 | #endif |
1473 | #ifdef SO_BROADCAST | |
e11e83f3 | 1474 | scm_c_define ("SO_BROADCAST", scm_from_int (SO_BROADCAST)); |
370312ae GH |
1475 | #endif |
1476 | #ifdef SO_SNDBUF | |
e11e83f3 | 1477 | scm_c_define ("SO_SNDBUF", scm_from_int (SO_SNDBUF)); |
370312ae GH |
1478 | #endif |
1479 | #ifdef SO_RCVBUF | |
e11e83f3 | 1480 | scm_c_define ("SO_RCVBUF", scm_from_int (SO_RCVBUF)); |
370312ae GH |
1481 | #endif |
1482 | #ifdef SO_KEEPALIVE | |
e11e83f3 | 1483 | scm_c_define ("SO_KEEPALIVE", scm_from_int (SO_KEEPALIVE)); |
370312ae GH |
1484 | #endif |
1485 | #ifdef SO_OOBINLINE | |
e11e83f3 | 1486 | scm_c_define ("SO_OOBINLINE", scm_from_int (SO_OOBINLINE)); |
370312ae GH |
1487 | #endif |
1488 | #ifdef SO_NO_CHECK | |
e11e83f3 | 1489 | scm_c_define ("SO_NO_CHECK", scm_from_int (SO_NO_CHECK)); |
370312ae GH |
1490 | #endif |
1491 | #ifdef SO_PRIORITY | |
e11e83f3 | 1492 | scm_c_define ("SO_PRIORITY", scm_from_int (SO_PRIORITY)); |
370312ae GH |
1493 | #endif |
1494 | #ifdef SO_LINGER | |
e11e83f3 | 1495 | scm_c_define ("SO_LINGER", scm_from_int (SO_LINGER)); |
370312ae GH |
1496 | #endif |
1497 | ||
1498 | /* recv/send options. */ | |
1499 | #ifdef MSG_OOB | |
e11e83f3 | 1500 | scm_c_define ("MSG_OOB", scm_from_int (MSG_OOB)); |
370312ae GH |
1501 | #endif |
1502 | #ifdef MSG_PEEK | |
e11e83f3 | 1503 | scm_c_define ("MSG_PEEK", scm_from_int (MSG_PEEK)); |
370312ae GH |
1504 | #endif |
1505 | #ifdef MSG_DONTROUTE | |
e11e83f3 | 1506 | scm_c_define ("MSG_DONTROUTE", scm_from_int (MSG_DONTROUTE)); |
370312ae GH |
1507 | #endif |
1508 | ||
b4e15479 SJ |
1509 | #ifdef __MINGW32__ |
1510 | scm_i_init_socket_Win32 (); | |
1511 | #endif | |
1512 | ||
1c80707c MV |
1513 | #ifdef IP_ADD_MEMBERSHIP |
1514 | scm_c_define ("IP_ADD_MEMBERSHIP", scm_from_int (IP_ADD_MEMBERSHIP)); | |
1515 | scm_c_define ("IP_DROP_MEMBERSHIP", scm_from_int (IP_DROP_MEMBERSHIP)); | |
1516 | #endif | |
1517 | ||
0f2d19dd | 1518 | scm_add_feature ("socket"); |
370312ae | 1519 | |
a0599745 | 1520 | #include "libguile/socket.x" |
0f2d19dd JB |
1521 | } |
1522 | ||
89e00824 ML |
1523 | |
1524 | /* | |
1525 | Local Variables: | |
1526 | c-file-style: "gnu" | |
1527 | End: | |
1528 | */ |