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Commit | Line | Data |
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db137867 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * commio.c: Network/file related functions | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
22 | * USA | |
23 | * | |
db137867 | 24 | */ |
c056dba2 | 25 | |
fe037171 EM |
26 | #include <librb_config.h> |
27 | #include <rb_lib.h> | |
db137867 AC |
28 | #include <commio-int.h> |
29 | #include <commio-ssl.h> | |
30 | #include <event-int.h> | |
31 | #ifdef HAVE_SYS_UIO_H | |
32 | #include <sys/uio.h> | |
33 | #endif | |
34 | #define HAVE_SSL 1 | |
35 | ||
36 | #ifndef MSG_NOSIGNAL | |
37 | #define MSG_NOSIGNAL 0 | |
38 | #endif | |
39 | ||
40 | ||
41 | struct timeout_data | |
42 | { | |
43 | rb_fde_t *F; | |
44 | rb_dlink_node node; | |
45 | time_t timeout; | |
46 | PF *timeout_handler; | |
47 | void *timeout_data; | |
48 | }; | |
49 | ||
50 | rb_dlink_list *rb_fd_table; | |
51 | static rb_bh *fd_heap; | |
52 | ||
53 | static rb_dlink_list timeout_list; | |
54 | static rb_dlink_list closed_list; | |
55 | ||
56 | static struct ev_entry *rb_timeout_ev; | |
57 | ||
58 | ||
59 | static const char *rb_err_str[] = { "Comm OK", "Error during bind()", | |
60 | "Error during DNS lookup", "connect timeout", | |
61 | "Error during connect()", | |
3cbcc111 JT |
62 | "Comm Error", |
63 | "Error with SSL" | |
db137867 AC |
64 | }; |
65 | ||
66 | /* Highest FD and number of open FDs .. */ | |
67 | static int number_fd = 0; | |
3202e249 | 68 | int rb_maxconnections = 0; |
db137867 AC |
69 | |
70 | static PF rb_connect_timeout; | |
589dbf4d | 71 | static PF rb_connect_outcome; |
db137867 | 72 | static void mangle_mapped_sockaddr(struct sockaddr *in); |
db137867 AC |
73 | |
74 | #ifndef HAVE_SOCKETPAIR | |
339150ec | 75 | static int rb_inet_socketpair(int d, int type, int protocol, rb_platform_fd_t sv[2]); |
3202e249 | 76 | static int rb_inet_socketpair_udp(rb_fde_t **newF1, rb_fde_t **newF2); |
db137867 AC |
77 | #endif |
78 | ||
79 | static inline rb_fde_t * | |
dc7e6b42 | 80 | add_fd(rb_platform_fd_t fd) |
db137867 AC |
81 | { |
82 | rb_fde_t *F = rb_find_fd(fd); | |
db137867 AC |
83 | |
84 | /* look up to see if we have it already */ | |
85 | if(F != NULL) | |
3202e249 VY |
86 | return F; |
87 | ||
db137867 AC |
88 | F = rb_bh_alloc(fd_heap); |
89 | F->fd = fd; | |
a9fb3ed0 | 90 | rb_dlinkAdd(F, &F->node, &rb_fd_table[rb_hash_fd(fd)]); |
3202e249 | 91 | return (F); |
db137867 AC |
92 | } |
93 | ||
94 | static inline void | |
95 | remove_fd(rb_fde_t *F) | |
96 | { | |
db137867 AC |
97 | if(F == NULL || !IsFDOpen(F)) |
98 | return; | |
3202e249 | 99 | |
a9fb3ed0 | 100 | rb_dlinkMoveNode(&F->node, &rb_fd_table[rb_hash_fd(F->fd)], &closed_list); |
db137867 AC |
101 | } |
102 | ||
3202e249 | 103 | static void |
db137867 AC |
104 | free_fds(void) |
105 | { | |
106 | rb_fde_t *F; | |
107 | rb_dlink_node *ptr, *next; | |
108 | RB_DLINK_FOREACH_SAFE(ptr, next, closed_list.head) | |
109 | { | |
110 | F = ptr->data; | |
ff0414c8 SA |
111 | |
112 | number_fd--; | |
113 | ||
114 | #ifdef _WIN32 | |
115 | if(F->type & (RB_FD_SOCKET | RB_FD_PIPE)) | |
116 | closesocket(F->fd); | |
117 | else | |
118 | #endif | |
119 | close(F->fd); | |
120 | ||
db137867 AC |
121 | rb_dlinkDelete(ptr, &closed_list); |
122 | rb_bh_free(fd_heap, F); | |
123 | } | |
124 | } | |
125 | ||
126 | /* 32bit solaris is kinda slow and stdio only supports fds < 256 | |
127 | * so we got to do this crap below. | |
128 | * (BTW Fuck you Sun, I hate your guts and I hope you go bankrupt soon) | |
129 | */ | |
130 | ||
131 | #if defined (__SVR4) && defined (__sun) | |
132 | static void | |
133 | rb_fd_hack(int *fd) | |
134 | { | |
135 | int newfd; | |
136 | if(*fd > 256 || *fd < 0) | |
137 | return; | |
138 | if((newfd = fcntl(*fd, F_DUPFD, 256)) != -1) | |
139 | { | |
140 | close(*fd); | |
141 | *fd = newfd; | |
142 | } | |
143 | return; | |
144 | } | |
145 | #else | |
146 | #define rb_fd_hack(fd) | |
147 | #endif | |
148 | ||
149 | ||
150 | /* close_all_connections() can be used *before* the system come up! */ | |
151 | ||
152 | static void | |
153 | rb_close_all(void) | |
154 | { | |
3202e249 | 155 | #ifndef _WIN32 |
db137867 | 156 | int i; |
db137867 AC |
157 | |
158 | /* XXX someone tell me why we care about 4 fd's ? */ | |
159 | /* XXX btw, fd 3 is used for profiler ! */ | |
3202e249 | 160 | for(i = 3; i < rb_maxconnections; ++i) |
db137867 AC |
161 | { |
162 | close(i); | |
163 | } | |
db137867 AC |
164 | #endif |
165 | } | |
166 | ||
167 | /* | |
168 | * get_sockerr - get the error value from the socket or the current errno | |
169 | * | |
170 | * Get the *real* error from the socket (well try to anyway..). | |
171 | * This may only work when SO_DEBUG is enabled but its worth the | |
172 | * gamble anyway. | |
173 | */ | |
174 | int | |
175 | rb_get_sockerr(rb_fde_t *F) | |
176 | { | |
177 | int errtmp; | |
178 | int err = 0; | |
179 | rb_socklen_t len = sizeof(err); | |
180 | ||
181 | if(!(F->type & RB_FD_SOCKET)) | |
182 | return errno; | |
183 | ||
184 | rb_get_errno(); | |
185 | errtmp = errno; | |
186 | ||
187 | #ifdef SO_ERROR | |
3202e249 VY |
188 | if(F != NULL |
189 | && !getsockopt(rb_get_fd(F), SOL_SOCKET, SO_ERROR, (char *)&err, (rb_socklen_t *) & len)) | |
db137867 AC |
190 | { |
191 | if(err) | |
192 | errtmp = err; | |
193 | } | |
194 | errno = errtmp; | |
195 | #endif | |
196 | return errtmp; | |
197 | } | |
198 | ||
199 | /* | |
200 | * rb_getmaxconnect - return the max number of connections allowed | |
201 | */ | |
202 | int | |
203 | rb_getmaxconnect(void) | |
204 | { | |
3202e249 | 205 | return (rb_maxconnections); |
db137867 AC |
206 | } |
207 | ||
208 | /* | |
209 | * set_sock_buffers - set send and receive buffers for socket | |
55abcbb2 | 210 | * |
db137867 AC |
211 | * inputs - fd file descriptor |
212 | * - size to set | |
213 | * output - returns true (1) if successful, false (0) otherwise | |
214 | * side effects - | |
215 | */ | |
216 | int | |
217 | rb_set_buffers(rb_fde_t *F, int size) | |
218 | { | |
219 | if(F == NULL) | |
220 | return 0; | |
221 | if(setsockopt | |
3202e249 VY |
222 | (F->fd, SOL_SOCKET, SO_RCVBUF, (char *)&size, sizeof(size)) |
223 | || setsockopt(F->fd, SOL_SOCKET, SO_SNDBUF, (char *)&size, sizeof(size))) | |
db137867 AC |
224 | return 0; |
225 | return 1; | |
226 | } | |
227 | ||
228 | /* | |
55abcbb2 | 229 | * set_non_blocking - Set the client connection into non-blocking mode. |
db137867 AC |
230 | * |
231 | * inputs - fd to set into non blocking mode | |
232 | * output - 1 if successful 0 if not | |
233 | * side effects - use POSIX compliant non blocking and | |
234 | * be done with it. | |
235 | */ | |
236 | int | |
237 | rb_set_nb(rb_fde_t *F) | |
238 | { | |
239 | int nonb = 0; | |
240 | int res; | |
dc7e6b42 | 241 | rb_platform_fd_t fd; |
db137867 AC |
242 | if(F == NULL) |
243 | return 0; | |
244 | fd = F->fd; | |
3202e249 | 245 | |
db137867 AC |
246 | if((res = rb_setup_fd(F))) |
247 | return res; | |
248 | #ifdef O_NONBLOCK | |
249 | nonb |= O_NONBLOCK; | |
250 | res = fcntl(fd, F_GETFL, 0); | |
251 | if(-1 == res || fcntl(fd, F_SETFL, res | nonb) == -1) | |
252 | return 0; | |
253 | #else | |
254 | nonb = 1; | |
255 | res = 0; | |
256 | if(ioctl(fd, FIONBIO, (char *)&nonb) == -1) | |
257 | return 0; | |
258 | #endif | |
259 | ||
260 | return 1; | |
261 | } | |
262 | ||
34a2afbc DF |
263 | int |
264 | rb_set_cloexec(rb_fde_t *F) | |
265 | { | |
266 | #ifdef _WIN32 | |
267 | SetHandleInformation((HANDLE) F->fd, HANDLE_FLAG_INHERIT, 0); | |
268 | #else | |
269 | int res; | |
270 | rb_platform_fd_t fd; | |
271 | if(F == NULL) | |
272 | return 0; | |
273 | fd = F->fd; | |
274 | ||
275 | res = fcntl(fd, F_GETFD, NULL); | |
276 | if(res == -1) | |
277 | return 0; | |
278 | if(fcntl(fd, F_SETFD, res | FD_CLOEXEC) == -1) | |
279 | return 0; | |
280 | ||
281 | return 1; | |
282 | #endif | |
283 | } | |
284 | ||
285 | int | |
286 | rb_clear_cloexec(rb_fde_t *F) | |
287 | { | |
288 | #ifdef _WIN32 | |
289 | SetHandleInformation((HANDLE) F->fd, HANDLE_FLAG_INHERIT, 1); | |
290 | #else | |
291 | int res; | |
292 | rb_platform_fd_t fd; | |
293 | if(F == NULL) | |
294 | return 0; | |
295 | fd = F->fd; | |
296 | ||
297 | res = fcntl(fd, F_GETFD, NULL); | |
298 | if(res == -1) | |
299 | return 0; | |
300 | if(fcntl(fd, F_SETFD, res & ~FD_CLOEXEC) == -1) | |
301 | return 0; | |
302 | ||
303 | return 1; | |
304 | #endif | |
305 | } | |
306 | ||
db137867 AC |
307 | /* |
308 | * rb_settimeout() - set the socket timeout | |
309 | * | |
310 | * Set the timeout for the fd | |
311 | */ | |
312 | void | |
313 | rb_settimeout(rb_fde_t *F, time_t timeout, PF * callback, void *cbdata) | |
314 | { | |
315 | struct timeout_data *td; | |
316 | ||
317 | if(F == NULL) | |
318 | return; | |
319 | ||
320 | lrb_assert(IsFDOpen(F)); | |
321 | td = F->timeout; | |
3202e249 | 322 | if(callback == NULL) /* user wants to remove */ |
db137867 AC |
323 | { |
324 | if(td == NULL) | |
325 | return; | |
326 | rb_dlinkDelete(&td->node, &timeout_list); | |
327 | rb_free(td); | |
328 | F->timeout = NULL; | |
3202e249 | 329 | if(rb_dlink_list_length(&timeout_list) == 0) |
db137867 AC |
330 | { |
331 | rb_event_delete(rb_timeout_ev); | |
332 | rb_timeout_ev = NULL; | |
333 | } | |
334 | return; | |
335 | } | |
336 | ||
337 | if(F->timeout == NULL) | |
3202e249 VY |
338 | td = F->timeout = rb_malloc(sizeof(struct timeout_data)); |
339 | ||
db137867 AC |
340 | td->F = F; |
341 | td->timeout = rb_current_time() + timeout; | |
342 | td->timeout_handler = callback; | |
343 | td->timeout_data = cbdata; | |
344 | rb_dlinkAdd(td, &td->node, &timeout_list); | |
345 | if(rb_timeout_ev == NULL) | |
346 | { | |
3202e249 | 347 | rb_timeout_ev = rb_event_add("rb_checktimeouts", rb_checktimeouts, NULL, 5); |
db137867 AC |
348 | } |
349 | } | |
350 | ||
351 | /* | |
352 | * rb_checktimeouts() - check the socket timeouts | |
353 | * | |
354 | * All this routine does is call the given callback/cbdata, without closing | |
355 | * down the file descriptor. When close handlers have been implemented, | |
356 | * this will happen. | |
357 | */ | |
358 | void | |
8679c0fe | 359 | rb_checktimeouts(void *notused __attribute__((unused))) |
db137867 AC |
360 | { |
361 | rb_dlink_node *ptr, *next; | |
362 | struct timeout_data *td; | |
363 | rb_fde_t *F; | |
364 | PF *hdl; | |
365 | void *data; | |
366 | ||
367 | RB_DLINK_FOREACH_SAFE(ptr, next, timeout_list.head) | |
368 | { | |
369 | td = ptr->data; | |
370 | F = td->F; | |
371 | if(F == NULL || !IsFDOpen(F)) | |
372 | continue; | |
373 | ||
374 | if(td->timeout < rb_current_time()) | |
375 | { | |
376 | hdl = td->timeout_handler; | |
377 | data = td->timeout_data; | |
378 | rb_dlinkDelete(&td->node, &timeout_list); | |
379 | F->timeout = NULL; | |
380 | rb_free(td); | |
381 | hdl(F, data); | |
3202e249 | 382 | } |
db137867 AC |
383 | } |
384 | } | |
385 | ||
c6ad9b0c SA |
386 | static int |
387 | rb_setsockopt_reuseaddr(rb_fde_t *F) | |
388 | { | |
389 | int opt_one = 1; | |
390 | int ret; | |
391 | ||
392 | ret = setsockopt(F->fd, SOL_SOCKET, SO_REUSEADDR, &opt_one, sizeof(opt_one)); | |
393 | if (ret) { | |
394 | rb_lib_log("rb_setsockopt_reuseaddr: Cannot set SO_REUSEADDR for FD %d: %s", | |
395 | F->fd, strerror(rb_get_sockerr(F))); | |
396 | return ret; | |
397 | } | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | #ifdef HAVE_LIBSCTP | |
403 | static int | |
404 | rb_setsockopt_sctp(rb_fde_t *F) | |
405 | { | |
406 | int opt_zero = 0; | |
407 | int opt_one = 1; | |
268044ea SA |
408 | /* workaround for https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/net/sctp?id=299ee123e19889d511092347f5fc14db0f10e3a6 */ |
409 | char *env_mapped = getenv("SCTP_I_WANT_MAPPED_V4_ADDR"); | |
410 | int opt_mapped = env_mapped != NULL ? atoi(env_mapped) : opt_zero; | |
c6ad9b0c SA |
411 | int ret; |
412 | struct sctp_initmsg initmsg; | |
413 | struct sctp_rtoinfo rtoinfo; | |
414 | struct sctp_paddrparams paddrparams; | |
415 | struct sctp_assocparams assocparams; | |
416 | ||
417 | ret = setsockopt(F->fd, SOL_SCTP, SCTP_NODELAY, &opt_one, sizeof(opt_one)); | |
418 | if (ret) { | |
419 | rb_lib_log("rb_setsockopt_sctp: Cannot set SCTP_NODELAY for fd %d: %s", | |
420 | F->fd, strerror(rb_get_sockerr(F))); | |
421 | return ret; | |
422 | } | |
423 | ||
268044ea | 424 | ret = setsockopt(F->fd, SOL_SCTP, SCTP_I_WANT_MAPPED_V4_ADDR, &opt_mapped, sizeof(opt_mapped)); |
c6ad9b0c SA |
425 | if (ret) { |
426 | rb_lib_log("rb_setsockopt_sctp: Cannot unset SCTP_I_WANT_MAPPED_V4_ADDR for fd %d: %s", | |
427 | F->fd, strerror(rb_get_sockerr(F))); | |
428 | return ret; | |
429 | } | |
430 | ||
431 | /* Configure INIT message to specify that we only want one stream */ | |
432 | memset(&initmsg, 0, sizeof(initmsg)); | |
433 | initmsg.sinit_num_ostreams = 1; | |
434 | initmsg.sinit_max_instreams = 1; | |
435 | ||
436 | ret = setsockopt(F->fd, SOL_SCTP, SCTP_INITMSG, &initmsg, sizeof(initmsg)); | |
437 | if (ret) { | |
438 | rb_lib_log("rb_setsockopt_sctp: Cannot set SCTP_INITMSG for fd %d: %s", | |
439 | F->fd, strerror(rb_get_sockerr(F))); | |
440 | return ret; | |
441 | } | |
442 | ||
443 | /* Configure RTO values to reduce the maximum timeout */ | |
444 | memset(&rtoinfo, 0, sizeof(rtoinfo)); | |
445 | rtoinfo.srto_initial = 3000; | |
446 | rtoinfo.srto_min = 1000; | |
447 | rtoinfo.srto_max = 10000; | |
448 | ||
449 | ret = setsockopt(F->fd, SOL_SCTP, SCTP_RTOINFO, &rtoinfo, sizeof(rtoinfo)); | |
450 | if (ret) { | |
451 | rb_lib_log("rb_setsockopt_sctp: Cannot set SCTP_RTOINFO for fd %d: %s", | |
452 | F->fd, strerror(rb_get_sockerr(F))); | |
453 | return ret; | |
454 | } | |
455 | ||
456 | /* | |
457 | * Configure peer address parameters to ensure that we monitor the connection | |
458 | * more often than the default and don't timeout retransmit attempts before | |
459 | * the ping timeout does. | |
460 | * | |
461 | * Each peer address will timeout reachability in about 750s. | |
462 | */ | |
463 | memset(&paddrparams, 0, sizeof(paddrparams)); | |
464 | paddrparams.spp_assoc_id = 0; | |
465 | memcpy(&paddrparams.spp_address, &in6addr_any, sizeof(in6addr_any)); | |
466 | paddrparams.spp_pathmaxrxt = 50; | |
467 | paddrparams.spp_hbinterval = 5000; | |
468 | paddrparams.spp_flags |= SPP_HB_ENABLE; | |
469 | ||
470 | ret = setsockopt(F->fd, SOL_SCTP, SCTP_PEER_ADDR_PARAMS, &paddrparams, sizeof(paddrparams)); | |
471 | if (ret) { | |
472 | rb_lib_log("rb_setsockopt_sctp: Cannot set SCTP_PEER_ADDR_PARAMS for fd %d: %s", | |
473 | F->fd, strerror(rb_get_sockerr(F))); | |
474 | return ret; | |
475 | } | |
476 | ||
477 | /* Configure association parameters for retransmit attempts as above */ | |
478 | memset(&assocparams, 0, sizeof(assocparams)); | |
479 | assocparams.sasoc_assoc_id = 0; | |
480 | assocparams.sasoc_asocmaxrxt = 50; | |
481 | ||
482 | ret = setsockopt(F->fd, SOL_SCTP, SCTP_ASSOCINFO, &assocparams, sizeof(assocparams)); | |
483 | if (ret) { | |
484 | rb_lib_log("rb_setsockopt_sctp: Cannot set SCTP_ASSOCINFO for fd %d: %s", | |
485 | F->fd, strerror(rb_get_sockerr(F))); | |
486 | return ret; | |
487 | } | |
488 | ||
489 | return 0; | |
490 | } | |
491 | #endif | |
492 | ||
493 | int | |
494 | rb_bind(rb_fde_t *F, struct sockaddr *addr) | |
495 | { | |
496 | int ret; | |
497 | ||
498 | ret = rb_setsockopt_reuseaddr(F); | |
499 | if (ret) | |
500 | return ret; | |
501 | ||
502 | ret = bind(F->fd, addr, GET_SS_LEN(addr)); | |
503 | if (ret) | |
504 | return ret; | |
505 | ||
506 | return 0; | |
507 | } | |
508 | ||
6003ce76 SA |
509 | #ifdef HAVE_LIBSCTP |
510 | static int | |
511 | rb_sctp_bindx_only(rb_fde_t *F, struct sockaddr_storage *addrs, size_t len) | |
512 | { | |
513 | int ret; | |
514 | ||
515 | for (size_t i = 0; i < len; i++) { | |
516 | if (GET_SS_FAMILY(&addrs[i]) == AF_UNSPEC) | |
517 | continue; | |
518 | ||
519 | ret = sctp_bindx(F->fd, (struct sockaddr *)&addrs[i], 1, SCTP_BINDX_ADD_ADDR); | |
520 | if (ret) | |
521 | return ret; | |
522 | } | |
523 | ||
524 | return 0; | |
525 | } | |
526 | #endif | |
527 | ||
c6ad9b0c SA |
528 | int |
529 | rb_sctp_bindx(rb_fde_t *F, struct sockaddr_storage *addrs, size_t len) | |
530 | { | |
531 | #ifdef HAVE_LIBSCTP | |
532 | int ret; | |
533 | ||
534 | if ((F->type & RB_FD_SCTP) == 0) | |
535 | return -1; | |
536 | ||
537 | ret = rb_setsockopt_reuseaddr(F); | |
538 | if (ret) | |
539 | return ret; | |
540 | ||
6003ce76 SA |
541 | ret = rb_sctp_bindx_only(F, addrs, len); |
542 | if (ret) | |
543 | return ret; | |
c6ad9b0c SA |
544 | |
545 | return 0; | |
546 | #else | |
547 | return -1; | |
548 | #endif | |
549 | } | |
550 | ||
551 | int | |
552 | rb_inet_get_proto(rb_fde_t *F) | |
db137867 | 553 | { |
c6ad9b0c SA |
554 | #ifdef HAVE_LIBSCTP |
555 | if (F->type & RB_FD_SCTP) | |
556 | return IPPROTO_SCTP; | |
557 | #endif | |
558 | return IPPROTO_TCP; | |
559 | } | |
560 | ||
8679c0fe | 561 | static void rb_accept_tryaccept(rb_fde_t *F, void *data __attribute__((unused))) { |
db137867 AC |
562 | struct rb_sockaddr_storage st; |
563 | rb_fde_t *new_F; | |
b0adc7bf | 564 | rb_socklen_t addrlen; |
db137867 AC |
565 | int new_fd; |
566 | ||
567 | while(1) | |
568 | { | |
b0adc7bf SA |
569 | memset(&st, 0, sizeof(st)); |
570 | addrlen = sizeof(st); | |
571 | ||
db137867 AC |
572 | new_fd = accept(F->fd, (struct sockaddr *)&st, &addrlen); |
573 | rb_get_errno(); | |
574 | if(new_fd < 0) | |
575 | { | |
576 | rb_setselect(F, RB_SELECT_ACCEPT, rb_accept_tryaccept, NULL); | |
577 | return; | |
578 | } | |
579 | ||
580 | rb_fd_hack(&new_fd); | |
581 | ||
c6ad9b0c | 582 | new_F = rb_open(new_fd, RB_FD_SOCKET | (F->type & RB_FD_INHERIT_TYPES), "Incoming Connection"); |
db137867 | 583 | |
a9fb3ed0 VY |
584 | if(new_F == NULL) |
585 | { | |
3202e249 | 586 | rb_lib_log |
c6ad9b0c | 587 | ("rb_accept: new_F == NULL on incoming connection. Closing new_fd == %d", |
3202e249 | 588 | new_fd); |
a9fb3ed0 VY |
589 | close(new_fd); |
590 | continue; | |
591 | } | |
592 | ||
c2ac22cc | 593 | if(rb_unlikely(!rb_set_nb(new_F))) |
db137867 AC |
594 | { |
595 | rb_get_errno(); | |
596 | rb_lib_log("rb_accept: Couldn't set FD %d non blocking!", new_F->fd); | |
597 | rb_close(new_F); | |
598 | } | |
599 | ||
db137867 | 600 | mangle_mapped_sockaddr((struct sockaddr *)&st); |
3202e249 | 601 | |
db137867 AC |
602 | if(F->accept->precb != NULL) |
603 | { | |
3202e249 | 604 | if(!F->accept->precb(new_F, (struct sockaddr *)&st, addrlen, F->accept->data)) /* pre-callback decided to drop it */ |
db137867 AC |
605 | continue; |
606 | } | |
607 | #ifdef HAVE_SSL | |
608 | if(F->type & RB_FD_SSL) | |
609 | { | |
a9fb3ed0 | 610 | rb_ssl_accept_setup(F, new_F, (struct sockaddr *)&st, addrlen); |
3202e249 | 611 | } |
db137867 | 612 | else |
3202e249 | 613 | #endif /* HAVE_SSL */ |
db137867 | 614 | { |
3202e249 VY |
615 | F->accept->callback(new_F, RB_OK, (struct sockaddr *)&st, addrlen, |
616 | F->accept->data); | |
db137867 AC |
617 | } |
618 | } | |
619 | ||
620 | } | |
621 | ||
622 | /* try to accept a TCP connection */ | |
623 | void | |
3202e249 | 624 | rb_accept_tcp(rb_fde_t *F, ACPRE * precb, ACCB * callback, void *data) |
db137867 AC |
625 | { |
626 | if(F == NULL) | |
627 | return; | |
628 | lrb_assert(callback); | |
629 | ||
630 | F->accept = rb_malloc(sizeof(struct acceptdata)); | |
631 | F->accept->callback = callback; | |
632 | F->accept->data = data; | |
633 | F->accept->precb = precb; | |
634 | rb_accept_tryaccept(F, NULL); | |
635 | } | |
636 | ||
637 | /* | |
dc7e6b42 | 638 | * void rb_connect_tcp(rb_platform_fd_t fd, struct sockaddr *dest, |
5ad62c80 | 639 | * struct sockaddr *clocal, |
db137867 AC |
640 | * CNCB *callback, void *data, int timeout) |
641 | * Input: An fd to connect with, a host and port to connect to, | |
5ad62c80 | 642 | * a local sockaddr to connect from (or NULL to use the |
db137867 AC |
643 | * default), a callback, the data to pass into the callback, the |
644 | * address family. | |
645 | * Output: None. | |
646 | * Side-effects: A non-blocking connection to the host is started, and | |
647 | * if necessary, set up for selection. The callback given | |
648 | * may be called now, or it may be called later. | |
649 | */ | |
650 | void | |
651 | rb_connect_tcp(rb_fde_t *F, struct sockaddr *dest, | |
5ad62c80 | 652 | struct sockaddr *clocal, CNCB * callback, void *data, int timeout) |
db137867 | 653 | { |
589dbf4d SA |
654 | int retval; |
655 | ||
656 | if (F == NULL) | |
db137867 | 657 | return; |
3202e249 | 658 | |
db137867 AC |
659 | lrb_assert(callback); |
660 | F->connect = rb_malloc(sizeof(struct conndata)); | |
661 | F->connect->callback = callback; | |
662 | F->connect->data = data; | |
663 | ||
664 | memcpy(&F->connect->hostaddr, dest, sizeof(F->connect->hostaddr)); | |
665 | ||
666 | /* Note that we're using a passed sockaddr here. This is because | |
667 | * generally you'll be bind()ing to a sockaddr grabbed from | |
668 | * getsockname(), so this makes things easier. | |
669 | * XXX If NULL is passed as local, we should later on bind() to the | |
670 | * virtual host IP, for completeness. | |
671 | * -- adrian | |
672 | */ | |
5ad62c80 | 673 | if((clocal != NULL) && (bind(F->fd, clocal, GET_SS_LEN(clocal)) < 0)) |
db137867 AC |
674 | { |
675 | /* Failure, call the callback with RB_ERR_BIND */ | |
676 | rb_connect_callback(F, RB_ERR_BIND); | |
677 | /* ... and quit */ | |
678 | return; | |
679 | } | |
680 | ||
681 | /* We have a valid IP, so we just call tryconnect */ | |
682 | /* Make sure we actually set the timeout here .. */ | |
683 | rb_settimeout(F, timeout, rb_connect_timeout, NULL); | |
db137867 | 684 | |
589dbf4d SA |
685 | retval = connect(F->fd, |
686 | (struct sockaddr *)&F->connect->hostaddr, | |
687 | GET_SS_LEN(&F->connect->hostaddr)); | |
688 | /* Error? */ | |
689 | if (retval < 0) { | |
690 | /* | |
691 | * If we get EISCONN, then we've already connect()ed the socket, | |
692 | * which is a good thing. | |
693 | * -- adrian | |
694 | */ | |
695 | rb_get_errno(); | |
696 | if (errno == EISCONN) { | |
697 | rb_connect_callback(F, RB_OK); | |
698 | } else if (rb_ignore_errno(errno)) { | |
699 | /* Ignore error? Reschedule */ | |
700 | rb_setselect(F, RB_SELECT_CONNECT, rb_connect_outcome, NULL); | |
701 | } else { | |
702 | /* Error? Fail with RB_ERR_CONNECT */ | |
703 | rb_connect_callback(F, RB_ERR_CONNECT); | |
704 | } | |
705 | return; | |
706 | } | |
707 | /* If we get here, we've succeeded, so call with RB_OK */ | |
708 | rb_connect_callback(F, RB_OK); | |
709 | } | |
db137867 | 710 | |
6003ce76 SA |
711 | void |
712 | rb_connect_sctp(rb_fde_t *F, struct sockaddr_storage *dest, size_t dest_len, | |
713 | struct sockaddr_storage *clocal, size_t clocal_len, | |
714 | CNCB *callback, void *data, int timeout) | |
715 | { | |
716 | #ifdef HAVE_LIBSCTP | |
717 | uint8_t packed_dest[sizeof(struct sockaddr_storage) * dest_len]; | |
718 | uint8_t *p = &packed_dest[0]; | |
719 | size_t n = 0; | |
720 | int retval; | |
721 | ||
722 | if (F == NULL) | |
723 | return; | |
724 | ||
725 | lrb_assert(callback); | |
726 | F->connect = rb_malloc(sizeof(struct conndata)); | |
727 | F->connect->callback = callback; | |
728 | F->connect->data = data; | |
729 | ||
730 | if ((F->type & RB_FD_SCTP) == 0) { | |
731 | rb_connect_callback(F, RB_ERR_CONNECT); | |
732 | return; | |
733 | } | |
734 | ||
735 | for (size_t i = 0; i < dest_len; i++) { | |
736 | if (GET_SS_FAMILY(&dest[i]) == AF_INET6) { | |
737 | memcpy(p, &dest[i], sizeof(struct sockaddr_in6)); | |
738 | n++; | |
739 | p += sizeof(struct sockaddr_in6); | |
740 | } else if (GET_SS_FAMILY(&dest[i]) == AF_INET) { | |
741 | memcpy(p, &dest[i], sizeof(struct sockaddr_in)); | |
742 | n++; | |
743 | p += sizeof(struct sockaddr_in); | |
744 | } | |
745 | } | |
746 | dest_len = n; | |
747 | ||
748 | memcpy(&F->connect->hostaddr, &dest[0], sizeof(F->connect->hostaddr)); | |
749 | ||
750 | if ((clocal_len > 0) && (rb_sctp_bindx_only(F, clocal, clocal_len) < 0)) { | |
751 | /* Failure, call the callback with RB_ERR_BIND */ | |
752 | rb_connect_callback(F, RB_ERR_BIND); | |
753 | /* ... and quit */ | |
754 | return; | |
755 | } | |
756 | ||
757 | rb_settimeout(F, timeout, rb_connect_timeout, NULL); | |
758 | ||
759 | retval = sctp_connectx(F->fd, (struct sockaddr *)packed_dest, dest_len, NULL); | |
760 | /* Error? */ | |
761 | if (retval < 0) { | |
762 | /* | |
763 | * If we get EISCONN, then we've already connect()ed the socket, | |
764 | * which is a good thing. | |
765 | * -- adrian | |
766 | */ | |
767 | rb_get_errno(); | |
768 | if (errno == EISCONN) { | |
769 | rb_connect_callback(F, RB_OK); | |
770 | } else if (rb_ignore_errno(errno)) { | |
771 | /* Ignore error? Reschedule */ | |
772 | rb_setselect(F, RB_SELECT_CONNECT, rb_connect_outcome, NULL); | |
773 | } else { | |
774 | /* Error? Fail with RB_ERR_CONNECT */ | |
775 | rb_connect_callback(F, RB_ERR_CONNECT); | |
776 | } | |
777 | return; | |
778 | } | |
779 | /* If we get here, we've succeeded, so call with RB_OK */ | |
780 | rb_connect_callback(F, RB_OK); | |
781 | #else | |
782 | rb_connect_callback(F, RB_ERR_CONNECT); | |
783 | #endif | |
784 | } | |
785 | ||
db137867 AC |
786 | /* |
787 | * rb_connect_callback() - call the callback, and continue with life | |
788 | */ | |
789 | void | |
790 | rb_connect_callback(rb_fde_t *F, int status) | |
791 | { | |
792 | CNCB *hdl; | |
793 | void *data; | |
3202e249 | 794 | int errtmp = errno; /* save errno as rb_settimeout clobbers it sometimes */ |
db137867 AC |
795 | |
796 | /* This check is gross..but probably necessary */ | |
797 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
798 | return; | |
799 | /* Clear the connect flag + handler */ | |
800 | hdl = F->connect->callback; | |
801 | data = F->connect->data; | |
802 | F->connect->callback = NULL; | |
803 | ||
aec4c3cb | 804 | |
db137867 AC |
805 | /* Clear the timeout handler */ |
806 | rb_settimeout(F, 0, NULL, NULL); | |
3202e249 | 807 | errno = errtmp; |
db137867 AC |
808 | /* Call the handler */ |
809 | hdl(F, status, data); | |
810 | } | |
811 | ||
812 | ||
813 | /* | |
814 | * rb_connect_timeout() - this gets called when the socket connection | |
815 | * times out. This *only* can be called once connect() is initially | |
816 | * called .. | |
817 | */ | |
818 | static void | |
8679c0fe | 819 | rb_connect_timeout(rb_fde_t *F, void *notused __attribute__((unused))) |
db137867 AC |
820 | { |
821 | /* error! */ | |
822 | rb_connect_callback(F, RB_ERR_TIMEOUT); | |
823 | } | |
824 | ||
db137867 | 825 | static void |
8679c0fe | 826 | rb_connect_outcome(rb_fde_t *F, void *notused __attribute__((unused))) |
db137867 AC |
827 | { |
828 | int retval; | |
589dbf4d SA |
829 | int err = 0; |
830 | socklen_t len = sizeof(err); | |
db137867 AC |
831 | |
832 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
833 | return; | |
589dbf4d SA |
834 | retval = getsockopt(F->fd, SOL_SOCKET, SO_ERROR, &err, &len); |
835 | if (retval < 0) { | |
db137867 | 836 | rb_get_errno(); |
589dbf4d SA |
837 | } else if (err != 0) { |
838 | errno = err; | |
839 | retval = -1; | |
840 | } | |
841 | if (retval < 0) { | |
842 | /* Error? Fail with RB_ERR_CONNECT */ | |
843 | rb_connect_callback(F, RB_ERR_CONNECT); | |
db137867 AC |
844 | return; |
845 | } | |
589dbf4d | 846 | /* If we get here, we've succeeded, so call with RB_OK */ |
db137867 AC |
847 | rb_connect_callback(F, RB_OK); |
848 | } | |
849 | ||
850 | ||
851 | int | |
852 | rb_connect_sockaddr(rb_fde_t *F, struct sockaddr *addr, int len) | |
853 | { | |
854 | if(F == NULL) | |
855 | return 0; | |
856 | ||
857 | memcpy(addr, &F->connect->hostaddr, len); | |
858 | return 1; | |
859 | } | |
860 | ||
861 | /* | |
862 | * rb_error_str() - return an error string for the given error condition | |
863 | */ | |
864 | const char * | |
865 | rb_errstr(int error) | |
866 | { | |
867 | if(error < 0 || error >= RB_ERR_MAX) | |
868 | return "Invalid error number!"; | |
869 | return rb_err_str[error]; | |
870 | } | |
871 | ||
872 | ||
873 | int | |
874 | rb_socketpair(int family, int sock_type, int proto, rb_fde_t **F1, rb_fde_t **F2, const char *note) | |
875 | { | |
e49147e5 | 876 | rb_platform_fd_t nfd[2]; |
db137867 AC |
877 | if(number_fd >= rb_maxconnections) |
878 | { | |
879 | errno = ENFILE; | |
880 | return -1; | |
881 | } | |
882 | ||
3202e249 | 883 | #ifdef HAVE_SOCKETPAIR |
db137867 AC |
884 | if(socketpair(family, sock_type, proto, nfd)) |
885 | #else | |
3202e249 VY |
886 | if(sock_type == SOCK_DGRAM) |
887 | { | |
888 | return rb_inet_socketpair_udp(F1, F2); | |
889 | } | |
890 | ||
891 | if(rb_inet_socketpair(AF_INET, sock_type, proto, nfd)) | |
db137867 AC |
892 | #endif |
893 | return -1; | |
894 | ||
895 | rb_fd_hack(&nfd[0]); | |
896 | rb_fd_hack(&nfd[1]); | |
897 | ||
898 | *F1 = rb_open(nfd[0], RB_FD_SOCKET, note); | |
899 | *F2 = rb_open(nfd[1], RB_FD_SOCKET, note); | |
900 | ||
901 | if(*F1 == NULL) | |
902 | { | |
903 | if(*F2 != NULL) | |
904 | rb_close(*F2); | |
905 | return -1; | |
906 | } | |
907 | ||
908 | if(*F2 == NULL) | |
909 | { | |
910 | rb_close(*F1); | |
911 | return -1; | |
912 | } | |
913 | ||
914 | /* Set the socket non-blocking, and other wonderful bits */ | |
c2ac22cc | 915 | if(rb_unlikely(!rb_set_nb(*F1))) |
db137867 AC |
916 | { |
917 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[0], strerror(errno)); | |
918 | rb_close(*F1); | |
919 | rb_close(*F2); | |
920 | return -1; | |
921 | } | |
922 | ||
c2ac22cc | 923 | if(rb_unlikely(!rb_set_nb(*F2))) |
db137867 AC |
924 | { |
925 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[1], strerror(errno)); | |
926 | rb_close(*F1); | |
927 | rb_close(*F2); | |
928 | return -1; | |
929 | } | |
930 | ||
931 | return 0; | |
932 | } | |
933 | ||
934 | ||
935 | int | |
936 | rb_pipe(rb_fde_t **F1, rb_fde_t **F2, const char *desc) | |
937 | { | |
3202e249 | 938 | #ifndef _WIN32 |
dc7e6b42 | 939 | rb_platform_fd_t fd[2]; |
db137867 AC |
940 | if(number_fd >= rb_maxconnections) |
941 | { | |
942 | errno = ENFILE; | |
943 | return -1; | |
944 | } | |
945 | if(pipe(fd) == -1) | |
946 | return -1; | |
947 | rb_fd_hack(&fd[0]); | |
948 | rb_fd_hack(&fd[1]); | |
949 | *F1 = rb_open(fd[0], RB_FD_PIPE, desc); | |
950 | *F2 = rb_open(fd[1], RB_FD_PIPE, desc); | |
951 | ||
c2ac22cc | 952 | if(rb_unlikely(!rb_set_nb(*F1))) |
db137867 AC |
953 | { |
954 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[0], strerror(errno)); | |
955 | rb_close(*F1); | |
956 | rb_close(*F2); | |
957 | return -1; | |
958 | } | |
959 | ||
c2ac22cc | 960 | if(rb_unlikely(!rb_set_nb(*F2))) |
db137867 AC |
961 | { |
962 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[1], strerror(errno)); | |
963 | rb_close(*F1); | |
964 | rb_close(*F2); | |
965 | return -1; | |
966 | } | |
967 | ||
968 | ||
969 | return 0; | |
970 | #else | |
971 | /* Its not a pipe..but its selectable. I'll take dirty hacks | |
972 | * for $500 Alex. | |
973 | */ | |
3202e249 | 974 | return rb_socketpair(AF_INET, SOCK_STREAM, 0, F1, F2, desc); |
db137867 AC |
975 | #endif |
976 | } | |
977 | ||
978 | /* | |
979 | * rb_socket() - open a socket | |
980 | * | |
981 | * This is a highly highly cut down version of squid's rb_open() which | |
982 | * for the most part emulates socket(), *EXCEPT* it fails if we're about | |
983 | * to run out of file descriptors. | |
984 | */ | |
985 | rb_fde_t * | |
986 | rb_socket(int family, int sock_type, int proto, const char *note) | |
987 | { | |
988 | rb_fde_t *F; | |
dc7e6b42 | 989 | rb_platform_fd_t fd; |
db137867 | 990 | /* First, make sure we aren't going to run out of file descriptors */ |
c2ac22cc | 991 | if(rb_unlikely(number_fd >= rb_maxconnections)) |
db137867 AC |
992 | { |
993 | errno = ENFILE; | |
994 | return NULL; | |
995 | } | |
996 | ||
997 | /* | |
998 | * Next, we try to open the socket. We *should* drop the reserved FD | |
999 | * limit if/when we get an error, but we can deal with that later. | |
1000 | * XXX !!! -- adrian | |
1001 | */ | |
1002 | fd = socket(family, sock_type, proto); | |
1003 | rb_fd_hack(&fd); | |
c2ac22cc | 1004 | if(rb_unlikely(fd < 0)) |
db137867 AC |
1005 | return NULL; /* errno will be passed through, yay.. */ |
1006 | ||
55abcbb2 | 1007 | /* |
db137867 | 1008 | * Make sure we can take both IPv4 and IPv6 connections |
c6ad9b0c | 1009 | * on an AF_INET6 SCTP socket, otherwise keep them separate |
db137867 AC |
1010 | */ |
1011 | if(family == AF_INET6) | |
1012 | { | |
c6ad9b0c SA |
1013 | #ifdef HAVE_LIBSCTP |
1014 | int v6only = (proto == IPPROTO_SCTP) ? 0 : 1; | |
1015 | #else | |
1016 | int v6only = 1; | |
1017 | #endif | |
1018 | if(setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (void *) &v6only, sizeof(v6only)) == -1) | |
db137867 | 1019 | { |
c6ad9b0c SA |
1020 | rb_lib_log("rb_socket: Could not set IPV6_V6ONLY option to %d on FD %d: %s", |
1021 | v6only, fd, strerror(errno)); | |
db137867 AC |
1022 | close(fd); |
1023 | return NULL; | |
1024 | } | |
1025 | } | |
db137867 AC |
1026 | |
1027 | F = rb_open(fd, RB_FD_SOCKET, note); | |
1028 | if(F == NULL) | |
a9fb3ed0 | 1029 | { |
3202e249 VY |
1030 | rb_lib_log("rb_socket: rb_open returns NULL on FD %d: %s, closing fd", fd, |
1031 | strerror(errno)); | |
a9fb3ed0 | 1032 | close(fd); |
db137867 | 1033 | return NULL; |
a9fb3ed0 | 1034 | } |
c6ad9b0c SA |
1035 | |
1036 | #ifdef HAVE_LIBSCTP | |
1037 | if (proto == IPPROTO_SCTP) { | |
1038 | F->type |= RB_FD_SCTP; | |
1039 | ||
1040 | if (rb_setsockopt_sctp(F)) { | |
1041 | rb_lib_log("rb_socket: Could not set SCTP socket options on FD %d: %s", | |
1042 | fd, strerror(errno)); | |
1043 | close(fd); | |
1044 | return NULL; | |
1045 | } | |
1046 | } | |
1047 | #endif | |
1048 | ||
db137867 | 1049 | /* Set the socket non-blocking, and other wonderful bits */ |
c2ac22cc | 1050 | if(rb_unlikely(!rb_set_nb(F))) |
db137867 AC |
1051 | { |
1052 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd, strerror(errno)); | |
1053 | rb_close(F); | |
1054 | return NULL; | |
1055 | } | |
1056 | ||
1057 | return F; | |
1058 | } | |
1059 | ||
1060 | /* | |
1061 | * If a sockaddr_storage is AF_INET6 but is a mapped IPv4 | |
1062 | * socket manged the sockaddr. | |
1063 | */ | |
db137867 AC |
1064 | static void |
1065 | mangle_mapped_sockaddr(struct sockaddr *in) | |
1066 | { | |
3202e249 | 1067 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)in; |
db137867 | 1068 | |
db137867 AC |
1069 | if(in->sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&in6->sin6_addr)) |
1070 | { | |
1071 | struct sockaddr_in in4; | |
1072 | memset(&in4, 0, sizeof(struct sockaddr_in)); | |
1073 | in4.sin_family = AF_INET; | |
1074 | in4.sin_port = in6->sin6_port; | |
3202e249 | 1075 | in4.sin_addr.s_addr = ((uint32_t *)&in6->sin6_addr)[3]; |
db137867 AC |
1076 | memcpy(in, &in4, sizeof(struct sockaddr_in)); |
1077 | } | |
db137867 | 1078 | } |
db137867 AC |
1079 | |
1080 | /* | |
1081 | * rb_listen() - listen on a port | |
1082 | */ | |
1083 | int | |
aa4737a0 | 1084 | rb_listen(rb_fde_t *F, int backlog, int defer_accept) |
db137867 | 1085 | { |
77cb59b3 AC |
1086 | int result; |
1087 | ||
c6ad9b0c | 1088 | F->type = RB_FD_SOCKET | RB_FD_LISTEN | (F->type & RB_FD_INHERIT_TYPES); |
77cb59b3 AC |
1089 | result = listen(F->fd, backlog); |
1090 | ||
1091 | #ifdef TCP_DEFER_ACCEPT | |
aa4737a0 | 1092 | if (defer_accept && !result) |
77cb59b3 | 1093 | { |
e053adc8 | 1094 | (void)setsockopt(F->fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &backlog, sizeof(int)); |
77cb59b3 AC |
1095 | } |
1096 | #endif | |
797a29f3 JT |
1097 | #ifdef SO_ACCEPTFILTER |
1098 | if (defer_accept && !result) | |
1099 | { | |
1100 | struct accept_filter_arg afa; | |
1101 | ||
1102 | memset(&afa, '\0', sizeof afa); | |
1103 | rb_strlcpy(afa.af_name, "dataready", sizeof afa.af_name); | |
1104 | (void)setsockopt(F->fd, SOL_SOCKET, SO_ACCEPTFILTER, &afa, | |
1105 | sizeof afa); | |
1106 | } | |
1107 | #endif | |
77cb59b3 AC |
1108 | |
1109 | return result; | |
db137867 AC |
1110 | } |
1111 | ||
1112 | void | |
1113 | rb_fdlist_init(int closeall, int maxfds, size_t heapsize) | |
1114 | { | |
1115 | static int initialized = 0; | |
3202e249 | 1116 | #ifdef _WIN32 |
db137867 AC |
1117 | WSADATA wsaData; |
1118 | int err; | |
1119 | int vers = MAKEWORD(2, 0); | |
3202e249 | 1120 | |
db137867 AC |
1121 | err = WSAStartup(vers, &wsaData); |
1122 | if(err != 0) | |
1123 | { | |
1124 | rb_lib_die("WSAStartup failed"); | |
1125 | } | |
1126 | ||
1127 | #endif | |
1128 | if(!initialized) | |
1129 | { | |
1130 | rb_maxconnections = maxfds; | |
1131 | if(closeall) | |
1132 | rb_close_all(); | |
1133 | /* Since we're doing this once .. */ | |
1134 | initialized = 1; | |
1135 | } | |
1136 | fd_heap = rb_bh_create(sizeof(rb_fde_t), heapsize, "librb_fd_heap"); | |
1137 | ||
1138 | } | |
1139 | ||
1140 | ||
1141 | /* Called to open a given filedescriptor */ | |
1142 | rb_fde_t * | |
dc7e6b42 | 1143 | rb_open(rb_platform_fd_t fd, uint8_t type, const char *desc) |
db137867 | 1144 | { |
a9fb3ed0 | 1145 | rb_fde_t *F; |
db137867 AC |
1146 | lrb_assert(fd >= 0); |
1147 | ||
a9fb3ed0 VY |
1148 | F = add_fd(fd); |
1149 | ||
1150 | lrb_assert(!IsFDOpen(F)); | |
c2ac22cc | 1151 | if(rb_unlikely(IsFDOpen(F))) |
db137867 | 1152 | { |
a9fb3ed0 VY |
1153 | const char *fdesc; |
1154 | if(F != NULL && F->desc != NULL) | |
1155 | fdesc = F->desc; | |
1156 | else | |
1157 | fdesc = "NULL"; | |
3202e249 | 1158 | rb_lib_log("Trying to rb_open an already open FD: %d desc: %s", fd, fdesc); |
db137867 AC |
1159 | return NULL; |
1160 | } | |
db137867 AC |
1161 | F->fd = fd; |
1162 | F->type = type; | |
1163 | SetFDOpen(F); | |
1164 | ||
1165 | if(desc != NULL) | |
1166 | F->desc = rb_strndup(desc, FD_DESC_SZ); | |
1167 | number_fd++; | |
1168 | return F; | |
1169 | } | |
1170 | ||
1171 | ||
1172 | /* Called to close a given filedescriptor */ | |
1173 | void | |
1174 | rb_close(rb_fde_t *F) | |
1175 | { | |
1176 | int type, fd; | |
3202e249 | 1177 | |
db137867 AC |
1178 | if(F == NULL) |
1179 | return; | |
1180 | ||
1181 | fd = F->fd; | |
3202e249 | 1182 | type = F->type; |
db137867 AC |
1183 | lrb_assert(IsFDOpen(F)); |
1184 | ||
1185 | lrb_assert(!(type & RB_FD_FILE)); | |
c2ac22cc | 1186 | if(rb_unlikely(type & RB_FD_FILE)) |
db137867 AC |
1187 | { |
1188 | lrb_assert(F->read_handler == NULL); | |
1189 | lrb_assert(F->write_handler == NULL); | |
1190 | } | |
c6ad9b0c SA |
1191 | |
1192 | if (type & RB_FD_LISTEN) { | |
1193 | listen(F->fd, 0); | |
1194 | } | |
1195 | ||
db137867 AC |
1196 | rb_setselect(F, RB_SELECT_WRITE | RB_SELECT_READ, NULL, NULL); |
1197 | rb_settimeout(F, 0, NULL, NULL); | |
1198 | rb_free(F->accept); | |
1199 | rb_free(F->connect); | |
1200 | rb_free(F->desc); | |
1201 | #ifdef HAVE_SSL | |
1202 | if(type & RB_FD_SSL) | |
1203 | { | |
1204 | rb_ssl_shutdown(F); | |
1205 | } | |
1206 | #endif /* HAVE_SSL */ | |
1207 | if(IsFDOpen(F)) | |
1208 | { | |
1209 | remove_fd(F); | |
1210 | ClearFDOpen(F); | |
1211 | } | |
8a29e7cd SA |
1212 | |
1213 | if(type & RB_FD_LISTEN) | |
1214 | shutdown(fd, SHUT_RDWR); | |
db137867 AC |
1215 | } |
1216 | ||
1217 | ||
1218 | /* | |
1219 | * rb_dump_fd() - dump the list of active filedescriptors | |
1220 | */ | |
1221 | void | |
1222 | rb_dump_fd(DUMPCB * cb, void *data) | |
1223 | { | |
1224 | static const char *empty = ""; | |
1225 | rb_dlink_node *ptr; | |
1226 | rb_dlink_list *bucket; | |
1227 | rb_fde_t *F; | |
1228 | unsigned int i; | |
1229 | ||
1230 | for(i = 0; i < RB_FD_HASH_SIZE; i++) | |
1231 | { | |
1232 | bucket = &rb_fd_table[i]; | |
1233 | ||
1234 | if(rb_dlink_list_length(bucket) <= 0) | |
1235 | continue; | |
1236 | ||
1237 | RB_DLINK_FOREACH(ptr, bucket->head) | |
1238 | { | |
1239 | F = ptr->data; | |
1240 | if(F == NULL || !IsFDOpen(F)) | |
1241 | continue; | |
1242 | ||
1243 | cb(F->fd, F->desc ? F->desc : empty, data); | |
1244 | } | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | /* | |
1249 | * rb_note() - set the fd note | |
1250 | * | |
1251 | * Note: must be careful not to overflow rb_fd_table[fd].desc when | |
1252 | * calling. | |
1253 | */ | |
1254 | void | |
1255 | rb_note(rb_fde_t *F, const char *string) | |
1256 | { | |
1257 | if(F == NULL) | |
1258 | return; | |
1259 | ||
1260 | rb_free(F->desc); | |
1261 | F->desc = rb_strndup(string, FD_DESC_SZ); | |
1262 | } | |
1263 | ||
1264 | void | |
a9fb3ed0 | 1265 | rb_set_type(rb_fde_t *F, uint8_t type) |
db137867 AC |
1266 | { |
1267 | /* if the caller is calling this, lets assume they have a clue */ | |
1268 | F->type = type; | |
1269 | return; | |
1270 | } | |
1271 | ||
a9fb3ed0 | 1272 | uint8_t |
db137867 AC |
1273 | rb_get_type(rb_fde_t *F) |
1274 | { | |
1275 | return F->type; | |
1276 | } | |
1277 | ||
3202e249 | 1278 | int |
db137867 AC |
1279 | rb_fd_ssl(rb_fde_t *F) |
1280 | { | |
1281 | if(F == NULL) | |
1282 | return 0; | |
1283 | if(F->type & RB_FD_SSL) | |
1284 | return 1; | |
1285 | return 0; | |
1286 | } | |
1287 | ||
b1f7e409 | 1288 | rb_platform_fd_t |
db137867 AC |
1289 | rb_get_fd(rb_fde_t *F) |
1290 | { | |
1291 | if(F == NULL) | |
1292 | return -1; | |
3202e249 | 1293 | return (F->fd); |
db137867 AC |
1294 | } |
1295 | ||
1296 | rb_fde_t * | |
dc7e6b42 | 1297 | rb_get_fde(rb_platform_fd_t fd) |
db137867 AC |
1298 | { |
1299 | return rb_find_fd(fd); | |
1300 | } | |
1301 | ||
1302 | ssize_t | |
1303 | rb_read(rb_fde_t *F, void *buf, int count) | |
1304 | { | |
ba1721d1 | 1305 | ssize_t ret; |
db137867 AC |
1306 | if(F == NULL) |
1307 | return 0; | |
3202e249 | 1308 | |
55abcbb2 KB |
1309 | /* This needs to be *before* RB_FD_SOCKET otherwise you'll process |
1310 | * an SSL socket as a regular socket | |
db137867 AC |
1311 | */ |
1312 | #ifdef HAVE_SSL | |
1313 | if(F->type & RB_FD_SSL) | |
1314 | { | |
1315 | return rb_ssl_read(F, buf, count); | |
3202e249 | 1316 | } |
db137867 AC |
1317 | #endif |
1318 | if(F->type & RB_FD_SOCKET) | |
1319 | { | |
1320 | ret = recv(F->fd, buf, count, 0); | |
1321 | if(ret < 0) | |
1322 | { | |
1323 | rb_get_errno(); | |
1324 | } | |
1325 | return ret; | |
1326 | } | |
1327 | ||
1328 | ||
1329 | /* default case */ | |
1330 | return read(F->fd, buf, count); | |
1331 | } | |
1332 | ||
1333 | ||
1334 | ssize_t | |
1335 | rb_write(rb_fde_t *F, const void *buf, int count) | |
1336 | { | |
ba1721d1 | 1337 | ssize_t ret; |
db137867 AC |
1338 | if(F == NULL) |
1339 | return 0; | |
1340 | ||
1341 | #ifdef HAVE_SSL | |
1342 | if(F->type & RB_FD_SSL) | |
1343 | { | |
1344 | return rb_ssl_write(F, buf, count); | |
3202e249 | 1345 | } |
db137867 AC |
1346 | #endif |
1347 | if(F->type & RB_FD_SOCKET) | |
1348 | { | |
1349 | ret = send(F->fd, buf, count, MSG_NOSIGNAL); | |
3202e249 VY |
1350 | if(ret < 0) |
1351 | { | |
db137867 AC |
1352 | rb_get_errno(); |
1353 | } | |
1354 | return ret; | |
1355 | } | |
1356 | ||
1357 | return write(F->fd, buf, count); | |
1358 | } | |
1359 | ||
1360 | #if defined(HAVE_SSL) || defined(WIN32) || !defined(HAVE_WRITEV) | |
1361 | static ssize_t | |
1362 | rb_fake_writev(rb_fde_t *F, const struct rb_iovec *vp, size_t vpcount) | |
1363 | { | |
ba1721d1 | 1364 | ssize_t count = 0; |
db137867 | 1365 | |
3202e249 | 1366 | while(vpcount-- > 0) |
db137867 | 1367 | { |
ba1721d1 | 1368 | ssize_t written = rb_write(F, vp->iov_base, vp->iov_len); |
db137867 | 1369 | |
3202e249 | 1370 | if(written <= 0) |
db137867 AC |
1371 | { |
1372 | if(count > 0) | |
1373 | return count; | |
1374 | else | |
1375 | return written; | |
1376 | } | |
1377 | count += written; | |
1378 | vp++; | |
1379 | } | |
1380 | return (count); | |
1381 | } | |
1382 | #endif | |
1383 | ||
1384 | #if defined(WIN32) || !defined(HAVE_WRITEV) | |
1385 | ssize_t | |
3202e249 | 1386 | rb_writev(rb_fde_t *F, struct rb_iovec * vecount, int count) |
db137867 AC |
1387 | { |
1388 | return rb_fake_writev(F, vecount, count); | |
1389 | } | |
1390 | ||
1391 | #else | |
1392 | ssize_t | |
3202e249 | 1393 | rb_writev(rb_fde_t *F, struct rb_iovec * vector, int count) |
db137867 | 1394 | { |
3202e249 VY |
1395 | if(F == NULL) |
1396 | { | |
db137867 AC |
1397 | errno = EBADF; |
1398 | return -1; | |
1399 | } | |
1400 | #ifdef HAVE_SSL | |
1401 | if(F->type & RB_FD_SSL) | |
1402 | { | |
3202e249 | 1403 | return rb_fake_writev(F, vector, count); |
db137867 AC |
1404 | } |
1405 | #endif /* HAVE_SSL */ | |
1406 | #ifdef HAVE_SENDMSG | |
1407 | if(F->type & RB_FD_SOCKET) | |
1408 | { | |
1409 | struct msghdr msg; | |
1410 | memset(&msg, 0, sizeof(msg)); | |
1411 | msg.msg_iov = (struct iovec *)vector; | |
1412 | msg.msg_iovlen = count; | |
1413 | return sendmsg(F->fd, &msg, MSG_NOSIGNAL); | |
3202e249 | 1414 | } |
db137867 AC |
1415 | #endif /* HAVE_SENDMSG */ |
1416 | return writev(F->fd, (struct iovec *)vector, count); | |
1417 | ||
1418 | } | |
3202e249 | 1419 | #endif |
db137867 AC |
1420 | |
1421 | ||
55abcbb2 | 1422 | /* |
db137867 AC |
1423 | * From: Thomas Helvey <tomh@inxpress.net> |
1424 | */ | |
1425 | static const char *IpQuadTab[] = { | |
1426 | "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", | |
1427 | "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", | |
1428 | "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", | |
1429 | "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", | |
1430 | "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", | |
1431 | "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", | |
1432 | "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", | |
1433 | "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", | |
1434 | "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", | |
1435 | "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", | |
1436 | "100", "101", "102", "103", "104", "105", "106", "107", "108", "109", | |
1437 | "110", "111", "112", "113", "114", "115", "116", "117", "118", "119", | |
1438 | "120", "121", "122", "123", "124", "125", "126", "127", "128", "129", | |
1439 | "130", "131", "132", "133", "134", "135", "136", "137", "138", "139", | |
1440 | "140", "141", "142", "143", "144", "145", "146", "147", "148", "149", | |
1441 | "150", "151", "152", "153", "154", "155", "156", "157", "158", "159", | |
1442 | "160", "161", "162", "163", "164", "165", "166", "167", "168", "169", | |
1443 | "170", "171", "172", "173", "174", "175", "176", "177", "178", "179", | |
1444 | "180", "181", "182", "183", "184", "185", "186", "187", "188", "189", | |
1445 | "190", "191", "192", "193", "194", "195", "196", "197", "198", "199", | |
1446 | "200", "201", "202", "203", "204", "205", "206", "207", "208", "209", | |
1447 | "210", "211", "212", "213", "214", "215", "216", "217", "218", "219", | |
1448 | "220", "221", "222", "223", "224", "225", "226", "227", "228", "229", | |
1449 | "230", "231", "232", "233", "234", "235", "236", "237", "238", "239", | |
1450 | "240", "241", "242", "243", "244", "245", "246", "247", "248", "249", | |
1451 | "250", "251", "252", "253", "254", "255" | |
1452 | }; | |
1453 | ||
1454 | /* | |
1455 | * inetntoa - in_addr to string | |
1456 | * changed name to remove collision possibility and | |
1457 | * so behaviour is guaranteed to take a pointer arg. | |
1458 | * -avalon 23/11/92 | |
1459 | * inet_ntoa -- returned the dotted notation of a given | |
1460 | * internet number | |
1461 | * argv 11/90). | |
1462 | * inet_ntoa -- its broken on some Ultrix/Dynix too. -avalon | |
1463 | */ | |
1464 | ||
1465 | static const char * | |
1466 | inetntoa(const char *in) | |
1467 | { | |
1468 | static char buf[16]; | |
1469 | char *bufptr = buf; | |
3202e249 | 1470 | const unsigned char *a = (const unsigned char *)in; |
db137867 AC |
1471 | const char *n; |
1472 | ||
1473 | n = IpQuadTab[*a++]; | |
3202e249 | 1474 | while(*n) |
db137867 AC |
1475 | *bufptr++ = *n++; |
1476 | *bufptr++ = '.'; | |
1477 | n = IpQuadTab[*a++]; | |
3202e249 | 1478 | while(*n) |
db137867 AC |
1479 | *bufptr++ = *n++; |
1480 | *bufptr++ = '.'; | |
1481 | n = IpQuadTab[*a++]; | |
3202e249 | 1482 | while(*n) |
db137867 AC |
1483 | *bufptr++ = *n++; |
1484 | *bufptr++ = '.'; | |
1485 | n = IpQuadTab[*a]; | |
3202e249 | 1486 | while(*n) |
db137867 AC |
1487 | *bufptr++ = *n++; |
1488 | *bufptr = '\0'; | |
1489 | return buf; | |
1490 | } | |
1491 | ||
db137867 AC |
1492 | /* |
1493 | * WARNING: Don't even consider trying to compile this on a system where | |
1494 | * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. | |
1495 | */ | |
1496 | ||
3202e249 | 1497 | static const char *inet_ntop4(const unsigned char *src, char *dst, unsigned int size); |
3202e249 | 1498 | static const char *inet_ntop6(const unsigned char *src, char *dst, unsigned int size); |
db137867 AC |
1499 | |
1500 | /* const char * | |
1501 | * inet_ntop4(src, dst, size) | |
1502 | * format an IPv4 address | |
1503 | * return: | |
1504 | * `dst' (as a const) | |
1505 | * notes: | |
1506 | * (1) uses no statics | |
1507 | * (2) takes a unsigned char* not an in_addr as input | |
1508 | * author: | |
1509 | * Paul Vixie, 1996. | |
1510 | */ | |
1511 | static const char * | |
1512 | inet_ntop4(const unsigned char *src, char *dst, unsigned int size) | |
1513 | { | |
1514 | if(size < 16) | |
1515 | return NULL; | |
86510a73 | 1516 | return strcpy(dst, inetntoa((const char *)src)); |
db137867 AC |
1517 | } |
1518 | ||
1519 | /* const char * | |
1520 | * inet_ntop6(src, dst, size) | |
1521 | * convert IPv6 binary address into presentation (printable) format | |
1522 | * author: | |
1523 | * Paul Vixie, 1996. | |
1524 | */ | |
db137867 AC |
1525 | static const char * |
1526 | inet_ntop6(const unsigned char *src, char *dst, unsigned int size) | |
1527 | { | |
1528 | /* | |
1529 | * Note that int32_t and int16_t need only be "at least" large enough | |
1530 | * to contain a value of the specified size. On some systems, like | |
1531 | * Crays, there is no such thing as an integer variable with 16 bits. | |
1532 | * Keep this in mind if you think this function should have been coded | |
1533 | * to use pointer overlays. All the world's not a VAX. | |
1534 | */ | |
1535 | char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp; | |
1536 | struct | |
1537 | { | |
1538 | int base, len; | |
1539 | } | |
1540 | best, cur; | |
1541 | unsigned int words[IN6ADDRSZ / INT16SZ]; | |
1542 | int i; | |
1543 | ||
1544 | /* | |
1545 | * Preprocess: | |
1546 | * Copy the input (bytewise) array into a wordwise array. | |
1547 | * Find the longest run of 0x00's in src[] for :: shorthanding. | |
1548 | */ | |
1549 | memset(words, '\0', sizeof words); | |
3202e249 | 1550 | for(i = 0; i < IN6ADDRSZ; i += 2) |
db137867 AC |
1551 | words[i / 2] = (src[i] << 8) | src[i + 1]; |
1552 | best.base = -1; | |
1553 | best.len = 0; | |
1554 | cur.base = -1; | |
1555 | cur.len = 0; | |
3202e249 | 1556 | for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) |
db137867 AC |
1557 | { |
1558 | if(words[i] == 0) | |
1559 | { | |
1560 | if(cur.base == -1) | |
1561 | cur.base = i, cur.len = 1; | |
1562 | else | |
1563 | cur.len++; | |
1564 | } | |
1565 | else | |
1566 | { | |
1567 | if(cur.base != -1) | |
1568 | { | |
1569 | if(best.base == -1 || cur.len > best.len) | |
1570 | best = cur; | |
1571 | cur.base = -1; | |
1572 | } | |
1573 | } | |
1574 | } | |
1575 | if(cur.base != -1) | |
1576 | { | |
1577 | if(best.base == -1 || cur.len > best.len) | |
1578 | best = cur; | |
1579 | } | |
1580 | if(best.base != -1 && best.len < 2) | |
1581 | best.base = -1; | |
1582 | ||
1583 | /* | |
1584 | * Format the result. | |
1585 | */ | |
1586 | tp = tmp; | |
3202e249 | 1587 | for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) |
db137867 AC |
1588 | { |
1589 | /* Are we inside the best run of 0x00's? */ | |
1590 | if(best.base != -1 && i >= best.base && i < (best.base + best.len)) | |
1591 | { | |
1592 | if(i == best.base) | |
1593 | { | |
1594 | if(i == 0) | |
1595 | *tp++ = '0'; | |
1596 | *tp++ = ':'; | |
1597 | } | |
1598 | continue; | |
1599 | } | |
1600 | /* Are we following an initial run of 0x00s or any real hex? */ | |
1601 | if(i != 0) | |
1602 | *tp++ = ':'; | |
1603 | /* Is this address an encapsulated IPv4? */ | |
1604 | if(i == 6 && best.base == 0 && | |
1605 | (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) | |
1606 | { | |
1607 | if(!inet_ntop4(src + 12, tp, sizeof tmp - (tp - tmp))) | |
1608 | return (NULL); | |
1609 | tp += strlen(tp); | |
1610 | break; | |
1611 | } | |
5203cba5 | 1612 | tp += sprintf(tp, "%x", words[i]); |
db137867 AC |
1613 | } |
1614 | /* Was it a trailing run of 0x00's? */ | |
1615 | if(best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) | |
1616 | *tp++ = ':'; | |
1617 | *tp++ = '\0'; | |
1618 | ||
1619 | /* | |
1620 | * Check for overflow, copy, and we're done. | |
1621 | */ | |
1622 | ||
3202e249 | 1623 | if((unsigned int)(tp - tmp) > size) |
db137867 AC |
1624 | { |
1625 | return (NULL); | |
1626 | } | |
86510a73 | 1627 | return memcpy(dst, tmp, tp - tmp); |
db137867 | 1628 | } |
db137867 AC |
1629 | |
1630 | int | |
17809d2d | 1631 | rb_inet_pton_sock(const char *src, struct sockaddr_storage *dst) |
db137867 | 1632 | { |
9caecc93 | 1633 | memset(dst, 0, sizeof(*dst)); |
3202e249 | 1634 | if(rb_inet_pton(AF_INET, src, &((struct sockaddr_in *)dst)->sin_addr)) |
db137867 | 1635 | { |
d86692fa | 1636 | SET_SS_FAMILY(dst, AF_INET); |
1315fd59 | 1637 | SET_SS_PORT(dst, 0); |
db137867 AC |
1638 | SET_SS_LEN(dst, sizeof(struct sockaddr_in)); |
1639 | return 1; | |
1640 | } | |
3202e249 | 1641 | else if(rb_inet_pton(AF_INET6, src, &((struct sockaddr_in6 *)dst)->sin6_addr)) |
db137867 | 1642 | { |
d86692fa | 1643 | SET_SS_FAMILY(dst, AF_INET6); |
1315fd59 | 1644 | SET_SS_PORT(dst, 0); |
db137867 AC |
1645 | SET_SS_LEN(dst, sizeof(struct sockaddr_in6)); |
1646 | return 1; | |
1647 | } | |
db137867 AC |
1648 | return 0; |
1649 | } | |
1650 | ||
1651 | const char * | |
1652 | rb_inet_ntop_sock(struct sockaddr *src, char *dst, unsigned int size) | |
1653 | { | |
1654 | switch (src->sa_family) | |
1655 | { | |
1656 | case AF_INET: | |
3202e249 | 1657 | return (rb_inet_ntop(AF_INET, &((struct sockaddr_in *)src)->sin_addr, dst, size)); |
db137867 | 1658 | case AF_INET6: |
3202e249 VY |
1659 | return (rb_inet_ntop |
1660 | (AF_INET6, &((struct sockaddr_in6 *)src)->sin6_addr, dst, size)); | |
db137867 AC |
1661 | default: |
1662 | return NULL; | |
db137867 AC |
1663 | } |
1664 | } | |
1665 | ||
1666 | /* char * | |
1667 | * rb_inet_ntop(af, src, dst, size) | |
1668 | * convert a network format address to presentation format. | |
1669 | * return: | |
1670 | * pointer to presentation format address (`dst'), or NULL (see errno). | |
1671 | * author: | |
1672 | * Paul Vixie, 1996. | |
1673 | */ | |
1674 | const char * | |
1675 | rb_inet_ntop(int af, const void *src, char *dst, unsigned int size) | |
1676 | { | |
1677 | switch (af) | |
1678 | { | |
1679 | case AF_INET: | |
1680 | return (inet_ntop4(src, dst, size)); | |
db137867 | 1681 | case AF_INET6: |
3202e249 VY |
1682 | if(IN6_IS_ADDR_V4MAPPED((const struct in6_addr *)src) || |
1683 | IN6_IS_ADDR_V4COMPAT((const struct in6_addr *)src)) | |
db137867 | 1684 | return (inet_ntop4 |
3202e249 VY |
1685 | ((const unsigned char *)&((const struct in6_addr *)src)-> |
1686 | s6_addr[12], dst, size)); | |
db137867 AC |
1687 | else |
1688 | return (inet_ntop6(src, dst, size)); | |
db137867 AC |
1689 | default: |
1690 | return (NULL); | |
1691 | } | |
1692 | /* NOTREACHED */ | |
1693 | } | |
1694 | ||
1695 | /* | |
1696 | * WARNING: Don't even consider trying to compile this on a system where | |
1697 | * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. | |
1698 | */ | |
1699 | ||
1700 | /* int | |
1701 | * rb_inet_pton(af, src, dst) | |
1702 | * convert from presentation format (which usually means ASCII printable) | |
1703 | * to network format (which is usually some kind of binary format). | |
1704 | * return: | |
1705 | * 1 if the address was valid for the specified address family | |
1706 | * 0 if the address wasn't valid (`dst' is untouched in this case) | |
1707 | * -1 if some other error occurred (`dst' is untouched in this case, too) | |
1708 | * author: | |
1709 | * Paul Vixie, 1996. | |
1710 | */ | |
1711 | ||
1712 | /* int | |
1713 | * inet_pton4(src, dst) | |
1714 | * like inet_aton() but without all the hexadecimal and shorthand. | |
1715 | * return: | |
1716 | * 1 if `src' is a valid dotted quad, else 0. | |
1717 | * notice: | |
1718 | * does not touch `dst' unless it's returning 1. | |
1719 | * author: | |
1720 | * Paul Vixie, 1996. | |
1721 | */ | |
1722 | static int | |
1723 | inet_pton4(const char *src, unsigned char *dst) | |
1724 | { | |
1725 | int saw_digit, octets, ch; | |
1726 | unsigned char tmp[INADDRSZ], *tp; | |
1727 | ||
1728 | saw_digit = 0; | |
1729 | octets = 0; | |
1730 | *(tp = tmp) = 0; | |
3202e249 | 1731 | while((ch = *src++) != '\0') |
db137867 AC |
1732 | { |
1733 | ||
1734 | if(ch >= '0' && ch <= '9') | |
1735 | { | |
1736 | unsigned int new = *tp * 10 + (ch - '0'); | |
1737 | ||
1738 | if(new > 255) | |
1739 | return (0); | |
1740 | *tp = new; | |
1741 | if(!saw_digit) | |
1742 | { | |
1743 | if(++octets > 4) | |
1744 | return (0); | |
1745 | saw_digit = 1; | |
1746 | } | |
1747 | } | |
1748 | else if(ch == '.' && saw_digit) | |
1749 | { | |
1750 | if(octets == 4) | |
1751 | return (0); | |
1752 | *++tp = 0; | |
1753 | saw_digit = 0; | |
1754 | } | |
1755 | else | |
1756 | return (0); | |
1757 | } | |
1758 | if(octets < 4) | |
1759 | return (0); | |
1760 | memcpy(dst, tmp, INADDRSZ); | |
1761 | return (1); | |
1762 | } | |
1763 | ||
db137867 AC |
1764 | /* int |
1765 | * inet_pton6(src, dst) | |
1766 | * convert presentation level address to network order binary form. | |
1767 | * return: | |
1768 | * 1 if `src' is a valid [RFC1884 2.2] address, else 0. | |
1769 | * notice: | |
1770 | * (1) does not touch `dst' unless it's returning 1. | |
1771 | * (2) :: in a full address is silently ignored. | |
1772 | * credit: | |
1773 | * inspired by Mark Andrews. | |
1774 | * author: | |
1775 | * Paul Vixie, 1996. | |
1776 | */ | |
1777 | ||
1778 | static int | |
1779 | inet_pton6(const char *src, unsigned char *dst) | |
1780 | { | |
1781 | static const char xdigits[] = "0123456789abcdef"; | |
1782 | unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp; | |
1783 | const char *curtok; | |
1784 | int ch, saw_xdigit; | |
1785 | unsigned int val; | |
1786 | ||
1787 | tp = memset(tmp, '\0', IN6ADDRSZ); | |
1788 | endp = tp + IN6ADDRSZ; | |
1789 | colonp = NULL; | |
1790 | /* Leading :: requires some special handling. */ | |
1791 | if(*src == ':') | |
1792 | if(*++src != ':') | |
1793 | return (0); | |
1794 | curtok = src; | |
1795 | saw_xdigit = 0; | |
1796 | val = 0; | |
29c92cf9 | 1797 | while((ch = tolower((unsigned char)*src++)) != '\0') |
db137867 AC |
1798 | { |
1799 | const char *pch; | |
1800 | ||
1801 | pch = strchr(xdigits, ch); | |
1802 | if(pch != NULL) | |
1803 | { | |
1804 | val <<= 4; | |
1805 | val |= (pch - xdigits); | |
1806 | if(val > 0xffff) | |
1807 | return (0); | |
1808 | saw_xdigit = 1; | |
1809 | continue; | |
1810 | } | |
1811 | if(ch == ':') | |
1812 | { | |
1813 | curtok = src; | |
1814 | if(!saw_xdigit) | |
1815 | { | |
1816 | if(colonp) | |
1817 | return (0); | |
1818 | colonp = tp; | |
1819 | continue; | |
1820 | } | |
1821 | else if(*src == '\0') | |
1822 | { | |
1823 | return (0); | |
1824 | } | |
1825 | if(tp + INT16SZ > endp) | |
1826 | return (0); | |
3202e249 VY |
1827 | *tp++ = (unsigned char)(val >> 8) & 0xff; |
1828 | *tp++ = (unsigned char)val & 0xff; | |
db137867 AC |
1829 | saw_xdigit = 0; |
1830 | val = 0; | |
1831 | continue; | |
1832 | } | |
1833 | if(*src != '\0' && ch == '.') | |
1834 | { | |
1835 | if(((tp + INADDRSZ) <= endp) && inet_pton4(curtok, tp) > 0) | |
1836 | { | |
1837 | tp += INADDRSZ; | |
1838 | saw_xdigit = 0; | |
1839 | break; /* '\0' was seen by inet_pton4(). */ | |
1840 | } | |
1841 | } | |
1842 | else | |
1843 | continue; | |
1844 | return (0); | |
1845 | } | |
1846 | if(saw_xdigit) | |
1847 | { | |
1848 | if(tp + INT16SZ > endp) | |
1849 | return (0); | |
3202e249 VY |
1850 | *tp++ = (unsigned char)(val >> 8) & 0xff; |
1851 | *tp++ = (unsigned char)val & 0xff; | |
db137867 AC |
1852 | } |
1853 | if(colonp != NULL) | |
1854 | { | |
1855 | /* | |
1856 | * Since some memmove()'s erroneously fail to handle | |
1857 | * overlapping regions, we'll do the shift by hand. | |
1858 | */ | |
1859 | const int n = tp - colonp; | |
1860 | int i; | |
1861 | ||
1862 | if(tp == endp) | |
1863 | return (0); | |
3202e249 | 1864 | for(i = 1; i <= n; i++) |
db137867 AC |
1865 | { |
1866 | endp[-i] = colonp[n - i]; | |
1867 | colonp[n - i] = 0; | |
1868 | } | |
1869 | tp = endp; | |
1870 | } | |
1871 | if(tp != endp) | |
1872 | return (0); | |
1873 | memcpy(dst, tmp, IN6ADDRSZ); | |
1874 | return (1); | |
1875 | } | |
de293496 | 1876 | |
db137867 AC |
1877 | int |
1878 | rb_inet_pton(int af, const char *src, void *dst) | |
1879 | { | |
1880 | switch (af) | |
1881 | { | |
1882 | case AF_INET: | |
1883 | return (inet_pton4(src, dst)); | |
db137867 AC |
1884 | case AF_INET6: |
1885 | /* Somebody might have passed as an IPv4 address this is sick but it works */ | |
1886 | if(inet_pton4(src, dst)) | |
1887 | { | |
1888 | char tmp[HOSTIPLEN]; | |
5203cba5 | 1889 | sprintf(tmp, "::ffff:%s", src); |
db137867 AC |
1890 | return (inet_pton6(tmp, dst)); |
1891 | } | |
1892 | else | |
1893 | return (inet_pton6(src, dst)); | |
db137867 AC |
1894 | default: |
1895 | return (-1); | |
1896 | } | |
1897 | /* NOTREACHED */ | |
1898 | } | |
1899 | ||
1900 | ||
1901 | #ifndef HAVE_SOCKETPAIR | |
3202e249 VY |
1902 | |
1903 | /* mostly based on perl's emulation of socketpair udp */ | |
1904 | static int | |
1905 | rb_inet_socketpair_udp(rb_fde_t **newF1, rb_fde_t **newF2) | |
1906 | { | |
1907 | struct sockaddr_in addr[2]; | |
1908 | rb_socklen_t size = sizeof(struct sockaddr_in); | |
1909 | rb_fde_t *F[2]; | |
7dbf237f | 1910 | rb_platform_fd_t fd[2]; |
3202e249 VY |
1911 | int i, got; |
1912 | unsigned short port; | |
030272f3 VY |
1913 | struct timeval wait = { 0, 100000 }; |
1914 | int max; | |
1915 | fd_set rset; | |
1916 | struct sockaddr_in readfrom; | |
1917 | unsigned short buf[2]; | |
1918 | int o_errno; | |
3202e249 VY |
1919 | |
1920 | memset(&addr, 0, sizeof(addr)); | |
1921 | ||
1922 | for(i = 0; i < 2; i++) | |
1923 | { | |
1924 | F[i] = rb_socket(AF_INET, SOCK_DGRAM, 0, "udp socketpair"); | |
1925 | if(F[i] == NULL) | |
1926 | goto failed; | |
1927 | addr[i].sin_family = AF_INET; | |
1928 | addr[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1929 | addr[i].sin_port = 0; | |
1930 | if(bind(rb_get_fd(F[i]), (struct sockaddr *)&addr[i], sizeof(struct sockaddr_in))) | |
1931 | goto failed; | |
1932 | fd[i] = rb_get_fd(F[i]); | |
1933 | } | |
1934 | ||
1935 | for(i = 0; i < 2; i++) | |
1936 | { | |
1937 | if(getsockname(fd[i], (struct sockaddr *)&addr[i], &size)) | |
1938 | goto failed; | |
1939 | if(size != sizeof(struct sockaddr_in)) | |
1940 | goto failed; | |
1941 | if(connect(fd[!i], (struct sockaddr *)&addr[i], sizeof(struct sockaddr_in)) == -1) | |
1942 | goto failed; | |
1943 | } | |
1944 | ||
1945 | for(i = 0; i < 2; i++) | |
1946 | { | |
1947 | port = addr[i].sin_port; | |
1948 | got = rb_write(F[i], &port, sizeof(port)); | |
1949 | if(got != sizeof(port)) | |
1950 | { | |
1951 | if(got == -1) | |
1952 | goto failed; | |
1953 | goto abort_failed; | |
1954 | } | |
1955 | } | |
1956 | ||
030272f3 | 1957 | max = fd[1] > fd[0] ? fd[1] : fd[0]; |
3202e249 VY |
1958 | FD_ZERO(&rset); |
1959 | FD_SET(fd[0], &rset); | |
1960 | FD_SET(fd[1], &rset); | |
1961 | got = select(max + 1, &rset, NULL, NULL, &wait); | |
1962 | if(got != 2 || !FD_ISSET(fd[0], &rset) || !FD_ISSET(fd[1], &rset)) | |
1963 | { | |
1964 | if(got == -1) | |
1965 | goto failed; | |
1966 | goto abort_failed; | |
1967 | } | |
1968 | ||
3202e249 VY |
1969 | for(i = 0; i < 2; i++) |
1970 | { | |
1971 | #ifdef MSG_DONTWAIT | |
1972 | int flag = MSG_DONTWAIT | |
1973 | #else | |
1974 | int flag = 0; | |
1975 | #endif | |
1976 | got = recvfrom(rb_get_fd(F[i]), (char *)&buf, sizeof(buf), flag, | |
1977 | (struct sockaddr *)&readfrom, &size); | |
1978 | if(got == -1) | |
1979 | goto failed; | |
1980 | if(got != sizeof(port) | |
1981 | || size != sizeof(struct sockaddr_in) | |
1982 | || buf[0] != (unsigned short)addr[!i].sin_port | |
1983 | || readfrom.sin_family != addr[!i].sin_family | |
1984 | || readfrom.sin_addr.s_addr != addr[!i].sin_addr.s_addr | |
1985 | || readfrom.sin_port != addr[!i].sin_port) | |
1986 | goto abort_failed; | |
1987 | } | |
1988 | ||
1989 | *newF1 = F[0]; | |
1990 | *newF2 = F[1]; | |
1991 | return 0; | |
1992 | ||
1993 | #ifdef _WIN32 | |
7dbf237f | 1994 | #ifndef ECONNABORTED |
3202e249 | 1995 | #define ECONNABORTED WSAECONNABORTED |
7dbf237f | 1996 | #endif |
3202e249 VY |
1997 | #endif |
1998 | ||
1999 | abort_failed: | |
2000 | rb_get_errno(); | |
2001 | errno = ECONNABORTED; | |
2002 | failed: | |
2003 | if(errno != ECONNABORTED) | |
2004 | rb_get_errno(); | |
030272f3 | 2005 | o_errno = errno; |
3202e249 VY |
2006 | if(F[0] != NULL) |
2007 | rb_close(F[0]); | |
2008 | if(F[1] != NULL) | |
2009 | rb_close(F[1]); | |
2010 | errno = o_errno; | |
2011 | return -1; | |
2012 | } | |
2013 | ||
2014 | ||
db137867 | 2015 | int |
dc7e6b42 | 2016 | rb_inet_socketpair(int family, int type, int protocol, rb_platform_fd_t fd[2]) |
db137867 AC |
2017 | { |
2018 | int listener = -1; | |
2019 | int connector = -1; | |
2020 | int acceptor = -1; | |
2021 | struct sockaddr_in listen_addr; | |
2022 | struct sockaddr_in connect_addr; | |
3202e249 | 2023 | rb_socklen_t size; |
db137867 AC |
2024 | |
2025 | if(protocol || family != AF_INET) | |
2026 | { | |
2027 | errno = EAFNOSUPPORT; | |
2028 | return -1; | |
2029 | } | |
2030 | if(!fd) | |
2031 | { | |
2032 | errno = EINVAL; | |
2033 | return -1; | |
2034 | } | |
2035 | ||
2036 | listener = socket(AF_INET, type, 0); | |
2037 | if(listener == -1) | |
2038 | return -1; | |
2039 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
2040 | listen_addr.sin_family = AF_INET; | |
2041 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
2042 | listen_addr.sin_port = 0; /* kernel choses port. */ | |
3202e249 | 2043 | if(bind(listener, (struct sockaddr *)&listen_addr, sizeof(listen_addr)) == -1) |
db137867 AC |
2044 | goto tidy_up_and_fail; |
2045 | if(listen(listener, 1) == -1) | |
2046 | goto tidy_up_and_fail; | |
2047 | ||
2048 | connector = socket(AF_INET, type, 0); | |
2049 | if(connector == -1) | |
2050 | goto tidy_up_and_fail; | |
2051 | /* We want to find out the port number to connect to. */ | |
2052 | size = sizeof(connect_addr); | |
3202e249 | 2053 | if(getsockname(listener, (struct sockaddr *)&connect_addr, &size) == -1) |
db137867 AC |
2054 | goto tidy_up_and_fail; |
2055 | if(size != sizeof(connect_addr)) | |
2056 | goto abort_tidy_up_and_fail; | |
3202e249 | 2057 | if(connect(connector, (struct sockaddr *)&connect_addr, sizeof(connect_addr)) == -1) |
db137867 AC |
2058 | goto tidy_up_and_fail; |
2059 | ||
2060 | size = sizeof(listen_addr); | |
3202e249 | 2061 | acceptor = accept(listener, (struct sockaddr *)&listen_addr, &size); |
db137867 AC |
2062 | if(acceptor == -1) |
2063 | goto tidy_up_and_fail; | |
2064 | if(size != sizeof(listen_addr)) | |
2065 | goto abort_tidy_up_and_fail; | |
2066 | close(listener); | |
2067 | /* Now check we are talking to ourself by matching port and host on the | |
2068 | two sockets. */ | |
3202e249 | 2069 | if(getsockname(connector, (struct sockaddr *)&connect_addr, &size) == -1) |
db137867 AC |
2070 | goto tidy_up_and_fail; |
2071 | if(size != sizeof(connect_addr) | |
2072 | || listen_addr.sin_family != connect_addr.sin_family | |
2073 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
2074 | || listen_addr.sin_port != connect_addr.sin_port) | |
2075 | { | |
2076 | goto abort_tidy_up_and_fail; | |
2077 | } | |
2078 | fd[0] = connector; | |
2079 | fd[1] = acceptor; | |
2080 | return 0; | |
2081 | ||
2082 | abort_tidy_up_and_fail: | |
2083 | errno = EINVAL; /* I hope this is portable and appropriate. */ | |
2084 | ||
2085 | tidy_up_and_fail: | |
2086 | { | |
2087 | int save_errno = errno; | |
2088 | if(listener != -1) | |
2089 | close(listener); | |
2090 | if(connector != -1) | |
2091 | close(connector); | |
2092 | if(acceptor != -1) | |
2093 | close(acceptor); | |
2094 | errno = save_errno; | |
2095 | return -1; | |
2096 | } | |
2097 | } | |
2098 | ||
2099 | #endif | |
2100 | ||
2101 | ||
2102 | static void (*setselect_handler) (rb_fde_t *, unsigned int, PF *, void *); | |
2103 | static int (*select_handler) (long); | |
2104 | static int (*setup_fd_handler) (rb_fde_t *); | |
2105 | static int (*io_sched_event) (struct ev_entry *, int); | |
2106 | static void (*io_unsched_event) (struct ev_entry *); | |
2107 | static int (*io_supports_event) (void); | |
2108 | static void (*io_init_event) (void); | |
2109 | static char iotype[25]; | |
2110 | ||
2111 | const char * | |
2112 | rb_get_iotype(void) | |
2113 | { | |
2114 | return iotype; | |
2115 | } | |
2116 | ||
2117 | static int | |
2118 | rb_unsupported_event(void) | |
2119 | { | |
2120 | return 0; | |
2121 | } | |
2122 | ||
2123 | static int | |
2124 | try_kqueue(void) | |
2125 | { | |
2126 | if(!rb_init_netio_kqueue()) | |
2127 | { | |
2128 | setselect_handler = rb_setselect_kqueue; | |
2129 | select_handler = rb_select_kqueue; | |
2130 | setup_fd_handler = rb_setup_fd_kqueue; | |
2131 | io_sched_event = rb_kqueue_sched_event; | |
2132 | io_unsched_event = rb_kqueue_unsched_event; | |
2133 | io_init_event = rb_kqueue_init_event; | |
2134 | io_supports_event = rb_kqueue_supports_event; | |
2135 | rb_strlcpy(iotype, "kqueue", sizeof(iotype)); | |
2136 | return 0; | |
2137 | } | |
3202e249 | 2138 | return -1; |
db137867 AC |
2139 | } |
2140 | ||
2141 | static int | |
2142 | try_epoll(void) | |
2143 | { | |
2144 | if(!rb_init_netio_epoll()) | |
2145 | { | |
2146 | setselect_handler = rb_setselect_epoll; | |
2147 | select_handler = rb_select_epoll; | |
2148 | setup_fd_handler = rb_setup_fd_epoll; | |
2149 | io_sched_event = rb_epoll_sched_event; | |
2150 | io_unsched_event = rb_epoll_unsched_event; | |
2151 | io_supports_event = rb_epoll_supports_event; | |
2152 | io_init_event = rb_epoll_init_event; | |
2153 | rb_strlcpy(iotype, "epoll", sizeof(iotype)); | |
2154 | return 0; | |
2155 | } | |
2156 | return -1; | |
2157 | } | |
2158 | ||
2159 | static int | |
2160 | try_ports(void) | |
2161 | { | |
2162 | if(!rb_init_netio_ports()) | |
2163 | { | |
2164 | setselect_handler = rb_setselect_ports; | |
2165 | select_handler = rb_select_ports; | |
3202e249 | 2166 | setup_fd_handler = rb_setup_fd_ports; |
030272f3 VY |
2167 | io_sched_event = rb_ports_sched_event; |
2168 | io_unsched_event = rb_ports_unsched_event; | |
2169 | io_init_event = rb_ports_init_event; | |
2170 | io_supports_event = rb_ports_supports_event; | |
db137867 AC |
2171 | rb_strlcpy(iotype, "ports", sizeof(iotype)); |
2172 | return 0; | |
2173 | } | |
2174 | return -1; | |
2175 | } | |
2176 | ||
2177 | static int | |
2178 | try_devpoll(void) | |
2179 | { | |
2180 | if(!rb_init_netio_devpoll()) | |
2181 | { | |
2182 | setselect_handler = rb_setselect_devpoll; | |
2183 | select_handler = rb_select_devpoll; | |
3202e249 | 2184 | setup_fd_handler = rb_setup_fd_devpoll; |
db137867 AC |
2185 | io_sched_event = NULL; |
2186 | io_unsched_event = NULL; | |
2187 | io_init_event = NULL; | |
2188 | io_supports_event = rb_unsupported_event; | |
2189 | rb_strlcpy(iotype, "devpoll", sizeof(iotype)); | |
2190 | return 0; | |
2191 | } | |
2192 | return -1; | |
2193 | } | |
2194 | ||
2195 | static int | |
2196 | try_sigio(void) | |
2197 | { | |
2198 | if(!rb_init_netio_sigio()) | |
2199 | { | |
2200 | setselect_handler = rb_setselect_sigio; | |
2201 | select_handler = rb_select_sigio; | |
3202e249 | 2202 | setup_fd_handler = rb_setup_fd_sigio; |
db137867 | 2203 | io_sched_event = rb_sigio_sched_event; |
3202e249 VY |
2204 | io_unsched_event = rb_sigio_unsched_event; |
2205 | io_supports_event = rb_sigio_supports_event; | |
2206 | io_init_event = rb_sigio_init_event; | |
2207 | ||
db137867 AC |
2208 | rb_strlcpy(iotype, "sigio", sizeof(iotype)); |
2209 | return 0; | |
2210 | } | |
2211 | return -1; | |
2212 | } | |
2213 | ||
3202e249 | 2214 | static int |
db137867 AC |
2215 | try_poll(void) |
2216 | { | |
2217 | if(!rb_init_netio_poll()) | |
2218 | { | |
2219 | setselect_handler = rb_setselect_poll; | |
2220 | select_handler = rb_select_poll; | |
3202e249 | 2221 | setup_fd_handler = rb_setup_fd_poll; |
db137867 AC |
2222 | io_sched_event = NULL; |
2223 | io_unsched_event = NULL; | |
2224 | io_init_event = NULL; | |
2225 | io_supports_event = rb_unsupported_event; | |
2226 | rb_strlcpy(iotype, "poll", sizeof(iotype)); | |
2227 | return 0; | |
2228 | } | |
2229 | return -1; | |
2230 | } | |
2231 | ||
2232 | static int | |
2233 | try_win32(void) | |
2234 | { | |
2235 | if(!rb_init_netio_win32()) | |
2236 | { | |
2237 | setselect_handler = rb_setselect_win32; | |
2238 | select_handler = rb_select_win32; | |
3202e249 | 2239 | setup_fd_handler = rb_setup_fd_win32; |
db137867 AC |
2240 | io_sched_event = NULL; |
2241 | io_unsched_event = NULL; | |
2242 | io_init_event = NULL; | |
2243 | io_supports_event = rb_unsupported_event; | |
2244 | rb_strlcpy(iotype, "win32", sizeof(iotype)); | |
2245 | return 0; | |
2246 | } | |
2247 | return -1; | |
2248 | } | |
2249 | ||
2250 | static int | |
2251 | try_select(void) | |
3202e249 | 2252 | { |
db137867 AC |
2253 | if(!rb_init_netio_select()) |
2254 | { | |
2255 | setselect_handler = rb_setselect_select; | |
2256 | select_handler = rb_select_select; | |
3202e249 | 2257 | setup_fd_handler = rb_setup_fd_select; |
db137867 AC |
2258 | io_sched_event = NULL; |
2259 | io_unsched_event = NULL; | |
2260 | io_init_event = NULL; | |
2261 | io_supports_event = rb_unsupported_event; | |
2262 | rb_strlcpy(iotype, "select", sizeof(iotype)); | |
2263 | return 0; | |
2264 | } | |
2265 | return -1; | |
2266 | } | |
2267 | ||
2268 | ||
2269 | int | |
2270 | rb_io_sched_event(struct ev_entry *ev, int when) | |
2271 | { | |
3202e249 VY |
2272 | if(ev == NULL || io_supports_event == NULL || io_sched_event == NULL |
2273 | || !io_supports_event()) | |
db137867 AC |
2274 | return 0; |
2275 | return io_sched_event(ev, when); | |
2276 | } | |
2277 | ||
2278 | void | |
2279 | rb_io_unsched_event(struct ev_entry *ev) | |
2280 | { | |
3202e249 VY |
2281 | if(ev == NULL || io_supports_event == NULL || io_unsched_event == NULL |
2282 | || !io_supports_event()) | |
db137867 | 2283 | return; |
3202e249 | 2284 | io_unsched_event(ev); |
db137867 | 2285 | } |
3202e249 | 2286 | |
db137867 AC |
2287 | int |
2288 | rb_io_supports_event(void) | |
2289 | { | |
2290 | if(io_supports_event == NULL) | |
2291 | return 0; | |
2292 | return io_supports_event(); | |
2293 | } | |
2294 | ||
2295 | void | |
2296 | rb_io_init_event(void) | |
2297 | { | |
2298 | io_init_event(); | |
2299 | rb_event_io_register_all(); | |
2300 | } | |
2301 | ||
2302 | void | |
2303 | rb_init_netio(void) | |
2304 | { | |
2305 | char *ioenv = getenv("LIBRB_USE_IOTYPE"); | |
2306 | rb_fd_table = rb_malloc(RB_FD_HASH_SIZE * sizeof(rb_dlink_list)); | |
2307 | rb_init_ssl(); | |
3202e249 | 2308 | |
db137867 AC |
2309 | if(ioenv != NULL) |
2310 | { | |
2311 | if(!strcmp("epoll", ioenv)) | |
2312 | { | |
2313 | if(!try_epoll()) | |
2314 | return; | |
3202e249 VY |
2315 | } |
2316 | else if(!strcmp("kqueue", ioenv)) | |
db137867 AC |
2317 | { |
2318 | if(!try_kqueue()) | |
2319 | return; | |
3202e249 VY |
2320 | } |
2321 | else if(!strcmp("ports", ioenv)) | |
db137867 AC |
2322 | { |
2323 | if(!try_ports()) | |
2324 | return; | |
3202e249 VY |
2325 | } |
2326 | else if(!strcmp("poll", ioenv)) | |
db137867 AC |
2327 | { |
2328 | if(!try_poll()) | |
2329 | return; | |
3202e249 VY |
2330 | } |
2331 | else if(!strcmp("devpoll", ioenv)) | |
db137867 AC |
2332 | { |
2333 | if(!try_devpoll()) | |
2334 | return; | |
3202e249 VY |
2335 | } |
2336 | else if(!strcmp("sigio", ioenv)) | |
db137867 AC |
2337 | { |
2338 | if(!try_sigio()) | |
2339 | return; | |
3202e249 VY |
2340 | } |
2341 | else if(!strcmp("select", ioenv)) | |
db137867 | 2342 | { |
3202e249 | 2343 | if(!try_select()) |
db137867 AC |
2344 | return; |
2345 | } | |
3202e249 | 2346 | if(!strcmp("win32", ioenv)) |
db137867 | 2347 | { |
3202e249 | 2348 | if(!try_win32()) |
db137867 AC |
2349 | return; |
2350 | } | |
3202e249 | 2351 | |
db137867 AC |
2352 | } |
2353 | ||
2354 | if(!try_kqueue()) | |
2355 | return; | |
2356 | if(!try_epoll()) | |
2357 | return; | |
2358 | if(!try_ports()) | |
2359 | return; | |
2360 | if(!try_devpoll()) | |
2361 | return; | |
2362 | if(!try_sigio()) | |
2363 | return; | |
2364 | if(!try_poll()) | |
2365 | return; | |
2366 | if(!try_win32()) | |
2367 | return; | |
2368 | if(!try_select()) | |
2369 | return; | |
2370 | ||
2371 | rb_lib_log("rb_init_netio: Could not find any io handlers...giving up"); | |
2372 | ||
2373 | abort(); | |
2374 | } | |
2375 | ||
3202e249 | 2376 | void |
db137867 AC |
2377 | rb_setselect(rb_fde_t *F, unsigned int type, PF * handler, void *client_data) |
2378 | { | |
2379 | setselect_handler(F, type, handler, client_data); | |
2380 | } | |
2381 | ||
3202e249 | 2382 | int |
db137867 AC |
2383 | rb_select(unsigned long timeout) |
2384 | { | |
2385 | int ret = select_handler(timeout); | |
2386 | free_fds(); | |
2387 | return ret; | |
2388 | } | |
2389 | ||
3202e249 | 2390 | int |
db137867 AC |
2391 | rb_setup_fd(rb_fde_t *F) |
2392 | { | |
1cad0654 | 2393 | rb_set_cloexec(F); |
db137867 AC |
2394 | return setup_fd_handler(F); |
2395 | } | |
2396 | ||
2397 | ||
db137867 AC |
2398 | int |
2399 | rb_ignore_errno(int error) | |
2400 | { | |
3202e249 | 2401 | switch (error) |
db137867 AC |
2402 | { |
2403 | #ifdef EINPROGRESS | |
3202e249 | 2404 | case EINPROGRESS: |
db137867 AC |
2405 | #endif |
2406 | #if defined EWOULDBLOCK | |
3202e249 | 2407 | case EWOULDBLOCK: |
db137867 AC |
2408 | #endif |
2409 | #if defined(EAGAIN) && (EWOULDBLOCK != EAGAIN) | |
3202e249 | 2410 | case EAGAIN: |
db137867 AC |
2411 | #endif |
2412 | #ifdef EINTR | |
3202e249 | 2413 | case EINTR: |
db137867 AC |
2414 | #endif |
2415 | #ifdef ERESTART | |
3202e249 | 2416 | case ERESTART: |
db137867 AC |
2417 | #endif |
2418 | #ifdef ENOBUFS | |
3202e249 VY |
2419 | case ENOBUFS: |
2420 | #endif | |
2421 | return 1; | |
2422 | default: | |
2423 | break; | |
2424 | } | |
db137867 AC |
2425 | return 0; |
2426 | } | |
2427 | ||
2428 | ||
3202e249 | 2429 | #if defined(HAVE_SENDMSG) && !defined(WIN32) |
db137867 AC |
2430 | int |
2431 | rb_recv_fd_buf(rb_fde_t *F, void *data, size_t datasize, rb_fde_t **xF, int nfds) | |
2432 | { | |
2433 | struct msghdr msg; | |
2434 | struct cmsghdr *cmsg; | |
2435 | struct iovec iov[1]; | |
2436 | struct stat st; | |
a9fb3ed0 | 2437 | uint8_t stype = RB_FD_UNKNOWN; |
db137867 | 2438 | const char *desc; |
dc7e6b42 | 2439 | rb_platform_fd_t fd, len, x, rfds; |
db137867 AC |
2440 | |
2441 | int control_len = CMSG_SPACE(sizeof(int) * nfds); | |
2442 | ||
2443 | iov[0].iov_base = data; | |
2444 | iov[0].iov_len = datasize; | |
3202e249 | 2445 | |
db137867 AC |
2446 | msg.msg_name = NULL; |
2447 | msg.msg_namelen = 0; | |
2448 | msg.msg_iov = iov; | |
2449 | msg.msg_iovlen = 1; | |
2450 | msg.msg_flags = 0; | |
2451 | cmsg = alloca(control_len); | |
2452 | msg.msg_control = cmsg; | |
2453 | msg.msg_controllen = control_len; | |
2454 | ||
2455 | if((len = recvmsg(rb_get_fd(F), &msg, 0)) <= 0) | |
2456 | return len; | |
2457 | ||
3202e249 VY |
2458 | if(msg.msg_controllen > 0 && msg.msg_control != NULL |
2459 | && (cmsg = CMSG_FIRSTHDR(&msg)) != NULL) | |
db137867 | 2460 | { |
90e960f0 | 2461 | rfds = ((unsigned char *)cmsg + cmsg->cmsg_len - CMSG_DATA(cmsg)) / sizeof(int); |
db137867 AC |
2462 | |
2463 | for(x = 0; x < nfds && x < rfds; x++) | |
2464 | { | |
2465 | fd = ((int *)CMSG_DATA(cmsg))[x]; | |
2466 | stype = RB_FD_UNKNOWN; | |
2467 | desc = "remote unknown"; | |
2468 | if(!fstat(fd, &st)) | |
2469 | { | |
2470 | if(S_ISSOCK(st.st_mode)) | |
2471 | { | |
2472 | stype = RB_FD_SOCKET; | |
2473 | desc = "remote socket"; | |
2474 | } | |
2475 | else if(S_ISFIFO(st.st_mode)) | |
2476 | { | |
2477 | stype = RB_FD_PIPE; | |
2478 | desc = "remote pipe"; | |
2479 | } | |
2480 | else if(S_ISREG(st.st_mode)) | |
2481 | { | |
2482 | stype = RB_FD_FILE; | |
2483 | desc = "remote file"; | |
2484 | } | |
2485 | } | |
2486 | xF[x] = rb_open(fd, stype, desc); | |
2487 | } | |
3202e249 VY |
2488 | } |
2489 | else | |
db137867 | 2490 | *xF = NULL; |
3202e249 | 2491 | return len; |
db137867 AC |
2492 | } |
2493 | ||
2494 | ||
2495 | int | |
8679c0fe | 2496 | rb_send_fd_buf(rb_fde_t *xF, rb_fde_t **F, int count, void *data, size_t datasize, pid_t pid __attribute__((unused))) |
db137867 | 2497 | { |
db137867 AC |
2498 | struct msghdr msg; |
2499 | struct cmsghdr *cmsg; | |
2500 | struct iovec iov[1]; | |
2501 | char empty = '0'; | |
db137867 | 2502 | |
5cc7ba25 | 2503 | memset(&msg, 0, sizeof(msg)); |
db137867 AC |
2504 | if(datasize == 0) |
2505 | { | |
2506 | iov[0].iov_base = ∅ | |
3202e249 VY |
2507 | iov[0].iov_len = 1; |
2508 | } | |
2509 | else | |
2510 | { | |
db137867 AC |
2511 | iov[0].iov_base = data; |
2512 | iov[0].iov_len = datasize; | |
2513 | } | |
2514 | msg.msg_iov = iov; | |
2515 | msg.msg_iovlen = 1; | |
2516 | msg.msg_name = NULL; | |
2517 | msg.msg_namelen = 0; | |
2518 | msg.msg_flags = 0; | |
2519 | msg.msg_control = NULL; | |
2520 | msg.msg_controllen = 0; | |
2521 | ||
2522 | if(count > 0) | |
2523 | { | |
e23126c8 | 2524 | size_t ucount = (size_t)count; |
db137867 | 2525 | int len = CMSG_SPACE(sizeof(int) * count); |
5cc7ba25 | 2526 | char buf[len]; |
db137867 AC |
2527 | |
2528 | msg.msg_control = buf; | |
2529 | msg.msg_controllen = len; | |
2530 | cmsg = CMSG_FIRSTHDR(&msg); | |
2531 | cmsg->cmsg_level = SOL_SOCKET; | |
2532 | cmsg->cmsg_type = SCM_RIGHTS; | |
2533 | cmsg->cmsg_len = CMSG_LEN(sizeof(int) * count); | |
2534 | ||
e23126c8 | 2535 | for(size_t i = 0; i < ucount; i++) |
3202e249 VY |
2536 | { |
2537 | ((int *)CMSG_DATA(cmsg))[i] = rb_get_fd(F[i]); | |
db137867 AC |
2538 | } |
2539 | msg.msg_controllen = cmsg->cmsg_len; | |
5cc7ba25 | 2540 | return sendmsg(rb_get_fd(xF), &msg, MSG_NOSIGNAL); |
db137867 | 2541 | } |
5cc7ba25 | 2542 | return sendmsg(rb_get_fd(xF), &msg, MSG_NOSIGNAL); |
db137867 | 2543 | } |
4eafa9e6 | 2544 | #else /* defined(HAVE_SENDMSG) && !defined(WIN32) */ |
3202e249 VY |
2545 | #ifndef _WIN32 |
2546 | int | |
2547 | rb_recv_fd_buf(rb_fde_t *F, void *data, size_t datasize, rb_fde_t **xF, int nfds) | |
2548 | { | |
2549 | errno = ENOSYS; | |
2550 | return -1; | |
2551 | } | |
db137867 | 2552 | |
3202e249 VY |
2553 | int |
2554 | rb_send_fd_buf(rb_fde_t *xF, rb_fde_t **F, int count, void *data, size_t datasize, pid_t pid) | |
2555 | { | |
2556 | errno = ENOSYS; | |
2557 | return -1; | |
2558 | } | |
4eafa9e6 EM |
2559 | #endif /* _WIN32 */ |
2560 | #endif /* defined(HAVE_SENDMSG) && !defined(WIN32) */ | |
2561 | ||
4eafa9e6 EM |
2562 | int |
2563 | rb_ipv4_from_ipv6(const struct sockaddr_in6 *restrict ip6, struct sockaddr_in *restrict ip4) | |
2564 | { | |
2565 | int i; | |
2566 | ||
2567 | if (!memcmp(ip6->sin6_addr.s6_addr, "\x20\x02", 2)) | |
2568 | { | |
2569 | /* 6to4 and similar */ | |
2570 | memcpy(&ip4->sin_addr, ip6->sin6_addr.s6_addr + 2, 4); | |
2571 | } | |
2572 | else if (!memcmp(ip6->sin6_addr.s6_addr, "\x20\x01\x00\x00", 4)) | |
2573 | { | |
2574 | /* Teredo */ | |
2575 | for (i = 0; i < 4; i++) | |
2576 | ((uint8_t *)&ip4->sin_addr)[i] = 0xFF ^ | |
2577 | ip6->sin6_addr.s6_addr[12 + i]; | |
2578 | } | |
2579 | else | |
2580 | return 0; | |
2581 | SET_SS_LEN(ip4, sizeof(struct sockaddr_in)); | |
2582 | ip4->sin_family = AF_INET; | |
2583 | ip4->sin_port = 0; | |
2584 | return 1; | |
2585 | } |