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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 | * | |
a9fb3ed0 | 24 | * $Id: commio.c 25795 2008-07-29 15:26:55Z androsyn $ |
db137867 AC |
25 | */ |
26 | #include <libratbox_config.h> | |
27 | #include <ratbox_lib.h> | |
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()", | |
62 | "Comm Error" | |
63 | }; | |
64 | ||
65 | /* Highest FD and number of open FDs .. */ | |
66 | static int number_fd = 0; | |
67 | static int rb_maxconnections = 0; | |
68 | ||
69 | static PF rb_connect_timeout; | |
70 | static PF rb_connect_tryconnect; | |
71 | #ifdef RB_IPV6 | |
72 | static void mangle_mapped_sockaddr(struct sockaddr *in); | |
73 | #endif | |
74 | ||
75 | #ifndef HAVE_SOCKETPAIR | |
76 | static int rb_inet_socketpair(int d, int type, int protocol, int sv[2]); | |
77 | #endif | |
78 | ||
79 | static inline rb_fde_t * | |
80 | add_fd(int fd) | |
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) | |
86 | return F; | |
87 | ||
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)]); |
db137867 AC |
91 | return(F); |
92 | } | |
93 | ||
94 | static inline void | |
95 | remove_fd(rb_fde_t *F) | |
96 | { | |
db137867 AC |
97 | if(F == NULL || !IsFDOpen(F)) |
98 | return; | |
99 | ||
a9fb3ed0 | 100 | rb_dlinkMoveNode(&F->node, &rb_fd_table[rb_hash_fd(F->fd)], &closed_list); |
db137867 AC |
101 | } |
102 | ||
103 | static void | |
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; | |
111 | rb_dlinkDelete(ptr, &closed_list); | |
112 | rb_bh_free(fd_heap, F); | |
113 | } | |
114 | } | |
115 | ||
116 | /* 32bit solaris is kinda slow and stdio only supports fds < 256 | |
117 | * so we got to do this crap below. | |
118 | * (BTW Fuck you Sun, I hate your guts and I hope you go bankrupt soon) | |
119 | */ | |
120 | ||
121 | #if defined (__SVR4) && defined (__sun) | |
122 | static void | |
123 | rb_fd_hack(int *fd) | |
124 | { | |
125 | int newfd; | |
126 | if(*fd > 256 || *fd < 0) | |
127 | return; | |
128 | if((newfd = fcntl(*fd, F_DUPFD, 256)) != -1) | |
129 | { | |
130 | close(*fd); | |
131 | *fd = newfd; | |
132 | } | |
133 | return; | |
134 | } | |
135 | #else | |
136 | #define rb_fd_hack(fd) | |
137 | #endif | |
138 | ||
139 | ||
140 | /* close_all_connections() can be used *before* the system come up! */ | |
141 | ||
142 | static void | |
143 | rb_close_all(void) | |
144 | { | |
145 | int i; | |
146 | #ifndef NDEBUG | |
147 | int fd; | |
148 | #endif | |
149 | ||
150 | /* XXX someone tell me why we care about 4 fd's ? */ | |
151 | /* XXX btw, fd 3 is used for profiler ! */ | |
152 | for (i = 4; i < rb_maxconnections; ++i) | |
153 | { | |
154 | close(i); | |
155 | } | |
156 | ||
157 | /* XXX should his hack be done in all cases? */ | |
158 | #ifndef NDEBUG | |
159 | /* fugly hack to reserve fd == 2 */ | |
160 | (void) close(2); | |
161 | fd = open("stderr.log", O_WRONLY | O_CREAT | O_APPEND, 0644); | |
162 | if(fd >= 0) | |
163 | { | |
164 | dup2(fd, 2); | |
165 | close(fd); | |
166 | } | |
167 | #endif | |
168 | } | |
169 | ||
170 | /* | |
171 | * get_sockerr - get the error value from the socket or the current errno | |
172 | * | |
173 | * Get the *real* error from the socket (well try to anyway..). | |
174 | * This may only work when SO_DEBUG is enabled but its worth the | |
175 | * gamble anyway. | |
176 | */ | |
177 | int | |
178 | rb_get_sockerr(rb_fde_t *F) | |
179 | { | |
180 | int errtmp; | |
181 | int err = 0; | |
182 | rb_socklen_t len = sizeof(err); | |
183 | ||
184 | if(!(F->type & RB_FD_SOCKET)) | |
185 | return errno; | |
186 | ||
187 | rb_get_errno(); | |
188 | errtmp = errno; | |
189 | ||
190 | #ifdef SO_ERROR | |
191 | if(F != NULL && !getsockopt(rb_get_fd(F), SOL_SOCKET, SO_ERROR, (char *) &err, (rb_socklen_t *) & len)) | |
192 | { | |
193 | if(err) | |
194 | errtmp = err; | |
195 | } | |
196 | errno = errtmp; | |
197 | #endif | |
198 | return errtmp; | |
199 | } | |
200 | ||
201 | /* | |
202 | * rb_getmaxconnect - return the max number of connections allowed | |
203 | */ | |
204 | int | |
205 | rb_getmaxconnect(void) | |
206 | { | |
207 | return(rb_maxconnections); | |
208 | } | |
209 | ||
210 | /* | |
211 | * set_sock_buffers - set send and receive buffers for socket | |
212 | * | |
213 | * inputs - fd file descriptor | |
214 | * - size to set | |
215 | * output - returns true (1) if successful, false (0) otherwise | |
216 | * side effects - | |
217 | */ | |
218 | int | |
219 | rb_set_buffers(rb_fde_t *F, int size) | |
220 | { | |
221 | if(F == NULL) | |
222 | return 0; | |
223 | if(setsockopt | |
224 | (F->fd, SOL_SOCKET, SO_RCVBUF, (char *) &size, sizeof(size)) | |
225 | || setsockopt(F->fd, SOL_SOCKET, SO_SNDBUF, (char *) &size, sizeof(size))) | |
226 | return 0; | |
227 | return 1; | |
228 | } | |
229 | ||
230 | /* | |
231 | * set_non_blocking - Set the client connection into non-blocking mode. | |
232 | * | |
233 | * inputs - fd to set into non blocking mode | |
234 | * output - 1 if successful 0 if not | |
235 | * side effects - use POSIX compliant non blocking and | |
236 | * be done with it. | |
237 | */ | |
238 | int | |
239 | rb_set_nb(rb_fde_t *F) | |
240 | { | |
241 | int nonb = 0; | |
242 | int res; | |
243 | int fd; | |
244 | if(F == NULL) | |
245 | return 0; | |
246 | fd = F->fd; | |
247 | ||
248 | if((res = rb_setup_fd(F))) | |
249 | return res; | |
250 | #ifdef O_NONBLOCK | |
251 | nonb |= O_NONBLOCK; | |
252 | res = fcntl(fd, F_GETFL, 0); | |
253 | if(-1 == res || fcntl(fd, F_SETFL, res | nonb) == -1) | |
254 | return 0; | |
255 | #else | |
256 | nonb = 1; | |
257 | res = 0; | |
258 | if(ioctl(fd, FIONBIO, (char *)&nonb) == -1) | |
259 | return 0; | |
260 | #endif | |
261 | ||
262 | return 1; | |
263 | } | |
264 | ||
265 | /* | |
266 | * rb_settimeout() - set the socket timeout | |
267 | * | |
268 | * Set the timeout for the fd | |
269 | */ | |
270 | void | |
271 | rb_settimeout(rb_fde_t *F, time_t timeout, PF * callback, void *cbdata) | |
272 | { | |
273 | struct timeout_data *td; | |
274 | ||
275 | if(F == NULL) | |
276 | return; | |
277 | ||
278 | lrb_assert(IsFDOpen(F)); | |
279 | td = F->timeout; | |
280 | if(callback == NULL) /* user wants to remove */ | |
281 | { | |
282 | if(td == NULL) | |
283 | return; | |
284 | rb_dlinkDelete(&td->node, &timeout_list); | |
285 | rb_free(td); | |
286 | F->timeout = NULL; | |
287 | if(rb_dlink_list_length(&timeout_list) == 0) | |
288 | { | |
289 | rb_event_delete(rb_timeout_ev); | |
290 | rb_timeout_ev = NULL; | |
291 | } | |
292 | return; | |
293 | } | |
294 | ||
295 | if(F->timeout == NULL) | |
296 | td = F->timeout = rb_malloc(sizeof(struct timeout_data)); | |
297 | ||
298 | td->F = F; | |
299 | td->timeout = rb_current_time() + timeout; | |
300 | td->timeout_handler = callback; | |
301 | td->timeout_data = cbdata; | |
302 | rb_dlinkAdd(td, &td->node, &timeout_list); | |
303 | if(rb_timeout_ev == NULL) | |
304 | { | |
305 | rb_timeout_ev = rb_event_add("rb_checktimeouts", rb_checktimeouts, NULL, 5); | |
306 | } | |
307 | } | |
308 | ||
309 | /* | |
310 | * rb_checktimeouts() - check the socket timeouts | |
311 | * | |
312 | * All this routine does is call the given callback/cbdata, without closing | |
313 | * down the file descriptor. When close handlers have been implemented, | |
314 | * this will happen. | |
315 | */ | |
316 | void | |
317 | rb_checktimeouts(void *notused) | |
318 | { | |
319 | rb_dlink_node *ptr, *next; | |
320 | struct timeout_data *td; | |
321 | rb_fde_t *F; | |
322 | PF *hdl; | |
323 | void *data; | |
324 | ||
325 | RB_DLINK_FOREACH_SAFE(ptr, next, timeout_list.head) | |
326 | { | |
327 | td = ptr->data; | |
328 | F = td->F; | |
329 | if(F == NULL || !IsFDOpen(F)) | |
330 | continue; | |
331 | ||
332 | if(td->timeout < rb_current_time()) | |
333 | { | |
334 | hdl = td->timeout_handler; | |
335 | data = td->timeout_data; | |
336 | rb_dlinkDelete(&td->node, &timeout_list); | |
337 | F->timeout = NULL; | |
338 | rb_free(td); | |
339 | hdl(F, data); | |
340 | } | |
341 | } | |
342 | } | |
343 | ||
344 | static void | |
345 | rb_accept_tryaccept(rb_fde_t *F, void *data) | |
346 | { | |
347 | struct rb_sockaddr_storage st; | |
348 | rb_fde_t *new_F; | |
349 | rb_socklen_t addrlen = sizeof(st); | |
350 | int new_fd; | |
351 | ||
352 | while(1) | |
353 | { | |
354 | new_fd = accept(F->fd, (struct sockaddr *)&st, &addrlen); | |
355 | rb_get_errno(); | |
356 | if(new_fd < 0) | |
357 | { | |
358 | rb_setselect(F, RB_SELECT_ACCEPT, rb_accept_tryaccept, NULL); | |
359 | return; | |
360 | } | |
361 | ||
362 | rb_fd_hack(&new_fd); | |
363 | ||
364 | new_F = rb_open(new_fd, RB_FD_SOCKET, "Incoming Connection"); | |
365 | ||
a9fb3ed0 VY |
366 | if(new_F == NULL) |
367 | { | |
368 | rb_lib_log("rb_accept: new_F == NULL on incoming connection. Closing new_fd == %d\n", new_fd); | |
369 | close(new_fd); | |
370 | continue; | |
371 | } | |
372 | ||
c2ac22cc | 373 | if(rb_unlikely(!rb_set_nb(new_F))) |
db137867 AC |
374 | { |
375 | rb_get_errno(); | |
376 | rb_lib_log("rb_accept: Couldn't set FD %d non blocking!", new_F->fd); | |
377 | rb_close(new_F); | |
378 | } | |
379 | ||
380 | #ifdef RB_IPV6 | |
381 | mangle_mapped_sockaddr((struct sockaddr *)&st); | |
382 | #endif | |
383 | ||
384 | if(F->accept->precb != NULL) | |
385 | { | |
386 | if(!F->accept->precb(new_F, (struct sockaddr *)&st, addrlen, F->accept->data)) /* pre-callback decided to drop it */ | |
387 | continue; | |
388 | } | |
389 | #ifdef HAVE_SSL | |
390 | if(F->type & RB_FD_SSL) | |
391 | { | |
a9fb3ed0 | 392 | rb_ssl_accept_setup(F, new_F, (struct sockaddr *)&st, addrlen); |
db137867 AC |
393 | } |
394 | else | |
395 | #endif /* HAVE_SSL */ | |
396 | { | |
397 | F->accept->callback(new_F, RB_OK, (struct sockaddr *)&st, addrlen, F->accept->data); | |
398 | } | |
399 | } | |
400 | ||
401 | } | |
402 | ||
403 | /* try to accept a TCP connection */ | |
404 | void | |
405 | rb_accept_tcp(rb_fde_t *F, ACPRE *precb, ACCB *callback, void *data) | |
406 | { | |
407 | if(F == NULL) | |
408 | return; | |
409 | lrb_assert(callback); | |
410 | ||
411 | F->accept = rb_malloc(sizeof(struct acceptdata)); | |
412 | F->accept->callback = callback; | |
413 | F->accept->data = data; | |
414 | F->accept->precb = precb; | |
415 | rb_accept_tryaccept(F, NULL); | |
416 | } | |
417 | ||
418 | /* | |
419 | * void rb_connect_tcp(int fd, struct sockaddr *dest, | |
420 | * struct sockaddr *clocal, int socklen, | |
421 | * CNCB *callback, void *data, int timeout) | |
422 | * Input: An fd to connect with, a host and port to connect to, | |
423 | * a local sockaddr to connect from + length(or NULL to use the | |
424 | * default), a callback, the data to pass into the callback, the | |
425 | * address family. | |
426 | * Output: None. | |
427 | * Side-effects: A non-blocking connection to the host is started, and | |
428 | * if necessary, set up for selection. The callback given | |
429 | * may be called now, or it may be called later. | |
430 | */ | |
431 | void | |
432 | rb_connect_tcp(rb_fde_t *F, struct sockaddr *dest, | |
433 | struct sockaddr *clocal, int socklen, CNCB * callback, void *data, int timeout) | |
434 | { | |
435 | if(F == NULL) | |
436 | return; | |
437 | ||
438 | lrb_assert(callback); | |
439 | F->connect = rb_malloc(sizeof(struct conndata)); | |
440 | F->connect->callback = callback; | |
441 | F->connect->data = data; | |
442 | ||
443 | memcpy(&F->connect->hostaddr, dest, sizeof(F->connect->hostaddr)); | |
444 | ||
445 | /* Note that we're using a passed sockaddr here. This is because | |
446 | * generally you'll be bind()ing to a sockaddr grabbed from | |
447 | * getsockname(), so this makes things easier. | |
448 | * XXX If NULL is passed as local, we should later on bind() to the | |
449 | * virtual host IP, for completeness. | |
450 | * -- adrian | |
451 | */ | |
452 | if((clocal != NULL) && (bind(F->fd, clocal, socklen) < 0)) | |
453 | { | |
454 | /* Failure, call the callback with RB_ERR_BIND */ | |
455 | rb_connect_callback(F, RB_ERR_BIND); | |
456 | /* ... and quit */ | |
457 | return; | |
458 | } | |
459 | ||
460 | /* We have a valid IP, so we just call tryconnect */ | |
461 | /* Make sure we actually set the timeout here .. */ | |
462 | rb_settimeout(F, timeout, rb_connect_timeout, NULL); | |
463 | rb_connect_tryconnect(F, NULL); | |
464 | } | |
465 | ||
466 | ||
467 | /* | |
468 | * rb_connect_callback() - call the callback, and continue with life | |
469 | */ | |
470 | void | |
471 | rb_connect_callback(rb_fde_t *F, int status) | |
472 | { | |
473 | CNCB *hdl; | |
474 | void *data; | |
aec4c3cb | 475 | int errtmp = errno; /* save errno as rb_settimeout clobbers it sometimes */ |
db137867 AC |
476 | |
477 | /* This check is gross..but probably necessary */ | |
478 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
479 | return; | |
480 | /* Clear the connect flag + handler */ | |
481 | hdl = F->connect->callback; | |
482 | data = F->connect->data; | |
483 | F->connect->callback = NULL; | |
484 | ||
aec4c3cb | 485 | |
db137867 AC |
486 | /* Clear the timeout handler */ |
487 | rb_settimeout(F, 0, NULL, NULL); | |
aec4c3cb | 488 | errno = errtmp; |
db137867 AC |
489 | /* Call the handler */ |
490 | hdl(F, status, data); | |
491 | } | |
492 | ||
493 | ||
494 | /* | |
495 | * rb_connect_timeout() - this gets called when the socket connection | |
496 | * times out. This *only* can be called once connect() is initially | |
497 | * called .. | |
498 | */ | |
499 | static void | |
500 | rb_connect_timeout(rb_fde_t *F, void *notused) | |
501 | { | |
502 | /* error! */ | |
503 | rb_connect_callback(F, RB_ERR_TIMEOUT); | |
504 | } | |
505 | ||
506 | /* static void rb_connect_tryconnect(int fd, void *notused) | |
507 | * Input: The fd, the handler data(unused). | |
508 | * Output: None. | |
509 | * Side-effects: Try and connect with pending connect data for the FD. If | |
510 | * we succeed or get a fatal error, call the callback. | |
511 | * Otherwise, it is still blocking or something, so register | |
512 | * to select for a write event on this FD. | |
513 | */ | |
514 | static void | |
515 | rb_connect_tryconnect(rb_fde_t *F, void *notused) | |
516 | { | |
517 | int retval; | |
518 | ||
519 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
520 | return; | |
521 | /* Try the connect() */ | |
522 | retval = connect(F->fd, | |
523 | (struct sockaddr *) &F->connect->hostaddr, GET_SS_LEN(&F->connect->hostaddr)); | |
524 | /* Error? */ | |
525 | if(retval < 0) | |
526 | { | |
527 | /* | |
528 | * If we get EISCONN, then we've already connect()ed the socket, | |
529 | * which is a good thing. | |
530 | * -- adrian | |
531 | */ | |
532 | rb_get_errno(); | |
533 | if(errno == EISCONN) | |
534 | rb_connect_callback(F, RB_OK); | |
535 | else if(rb_ignore_errno(errno)) | |
536 | /* Ignore error? Reschedule */ | |
537 | rb_setselect(F, RB_SELECT_CONNECT, | |
538 | rb_connect_tryconnect, NULL); | |
539 | else | |
540 | /* Error? Fail with RB_ERR_CONNECT */ | |
541 | rb_connect_callback(F, RB_ERR_CONNECT); | |
542 | return; | |
543 | } | |
544 | /* If we get here, we've suceeded, so call with RB_OK */ | |
545 | rb_connect_callback(F, RB_OK); | |
546 | } | |
547 | ||
548 | ||
549 | int | |
550 | rb_connect_sockaddr(rb_fde_t *F, struct sockaddr *addr, int len) | |
551 | { | |
552 | if(F == NULL) | |
553 | return 0; | |
554 | ||
555 | memcpy(addr, &F->connect->hostaddr, len); | |
556 | return 1; | |
557 | } | |
558 | ||
559 | /* | |
560 | * rb_error_str() - return an error string for the given error condition | |
561 | */ | |
562 | const char * | |
563 | rb_errstr(int error) | |
564 | { | |
565 | if(error < 0 || error >= RB_ERR_MAX) | |
566 | return "Invalid error number!"; | |
567 | return rb_err_str[error]; | |
568 | } | |
569 | ||
570 | ||
571 | int | |
572 | rb_socketpair(int family, int sock_type, int proto, rb_fde_t **F1, rb_fde_t **F2, const char *note) | |
573 | { | |
574 | int nfd[2]; | |
575 | if(number_fd >= rb_maxconnections) | |
576 | { | |
577 | errno = ENFILE; | |
578 | return -1; | |
579 | } | |
580 | ||
581 | #ifndef WIN32 | |
582 | if(socketpair(family, sock_type, proto, nfd)) | |
583 | #else | |
584 | if(rb_inet_socketpair(AF_INET, SOCK_STREAM, proto, nfd)) | |
585 | #endif | |
586 | return -1; | |
587 | ||
588 | rb_fd_hack(&nfd[0]); | |
589 | rb_fd_hack(&nfd[1]); | |
590 | ||
591 | *F1 = rb_open(nfd[0], RB_FD_SOCKET, note); | |
592 | *F2 = rb_open(nfd[1], RB_FD_SOCKET, note); | |
593 | ||
594 | if(*F1 == NULL) | |
595 | { | |
596 | if(*F2 != NULL) | |
597 | rb_close(*F2); | |
598 | return -1; | |
599 | } | |
600 | ||
601 | if(*F2 == NULL) | |
602 | { | |
603 | rb_close(*F1); | |
604 | return -1; | |
605 | } | |
606 | ||
607 | /* Set the socket non-blocking, and other wonderful bits */ | |
c2ac22cc | 608 | if(rb_unlikely(!rb_set_nb(*F1))) |
db137867 AC |
609 | { |
610 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[0], strerror(errno)); | |
611 | rb_close(*F1); | |
612 | rb_close(*F2); | |
613 | return -1; | |
614 | } | |
615 | ||
c2ac22cc | 616 | if(rb_unlikely(!rb_set_nb(*F2))) |
db137867 AC |
617 | { |
618 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[1], strerror(errno)); | |
619 | rb_close(*F1); | |
620 | rb_close(*F2); | |
621 | return -1; | |
622 | } | |
623 | ||
624 | return 0; | |
625 | } | |
626 | ||
627 | ||
628 | int | |
629 | rb_pipe(rb_fde_t **F1, rb_fde_t **F2, const char *desc) | |
630 | { | |
631 | #ifndef WIN32 | |
632 | int fd[2]; | |
633 | if(number_fd >= rb_maxconnections) | |
634 | { | |
635 | errno = ENFILE; | |
636 | return -1; | |
637 | } | |
638 | if(pipe(fd) == -1) | |
639 | return -1; | |
640 | rb_fd_hack(&fd[0]); | |
641 | rb_fd_hack(&fd[1]); | |
642 | *F1 = rb_open(fd[0], RB_FD_PIPE, desc); | |
643 | *F2 = rb_open(fd[1], RB_FD_PIPE, desc); | |
644 | ||
c2ac22cc | 645 | if(rb_unlikely(!rb_set_nb(*F1))) |
db137867 AC |
646 | { |
647 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[0], strerror(errno)); | |
648 | rb_close(*F1); | |
649 | rb_close(*F2); | |
650 | return -1; | |
651 | } | |
652 | ||
c2ac22cc | 653 | if(rb_unlikely(!rb_set_nb(*F2))) |
db137867 AC |
654 | { |
655 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[1], strerror(errno)); | |
656 | rb_close(*F1); | |
657 | rb_close(*F2); | |
658 | return -1; | |
659 | } | |
660 | ||
661 | ||
662 | return 0; | |
663 | #else | |
664 | /* Its not a pipe..but its selectable. I'll take dirty hacks | |
665 | * for $500 Alex. | |
666 | */ | |
667 | return rb_socketpair(AF_INET, SOCK_STREAM, 0, F1, F2, desc); | |
668 | #endif | |
669 | } | |
670 | ||
671 | /* | |
672 | * rb_socket() - open a socket | |
673 | * | |
674 | * This is a highly highly cut down version of squid's rb_open() which | |
675 | * for the most part emulates socket(), *EXCEPT* it fails if we're about | |
676 | * to run out of file descriptors. | |
677 | */ | |
678 | rb_fde_t * | |
679 | rb_socket(int family, int sock_type, int proto, const char *note) | |
680 | { | |
681 | rb_fde_t *F; | |
682 | int fd; | |
683 | /* First, make sure we aren't going to run out of file descriptors */ | |
c2ac22cc | 684 | if(rb_unlikely(number_fd >= rb_maxconnections)) |
db137867 AC |
685 | { |
686 | errno = ENFILE; | |
687 | return NULL; | |
688 | } | |
689 | ||
690 | /* | |
691 | * Next, we try to open the socket. We *should* drop the reserved FD | |
692 | * limit if/when we get an error, but we can deal with that later. | |
693 | * XXX !!! -- adrian | |
694 | */ | |
695 | fd = socket(family, sock_type, proto); | |
696 | rb_fd_hack(&fd); | |
c2ac22cc | 697 | if(rb_unlikely(fd < 0)) |
db137867 AC |
698 | return NULL; /* errno will be passed through, yay.. */ |
699 | ||
700 | #if defined(RB_IPV6) && defined(IPV6_V6ONLY) | |
701 | /* | |
702 | * Make sure we can take both IPv4 and IPv6 connections | |
703 | * on an AF_INET6 socket | |
704 | */ | |
705 | if(family == AF_INET6) | |
706 | { | |
707 | int off = 1; | |
708 | if(setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &off, sizeof(off)) == -1) | |
709 | { | |
710 | rb_lib_log("rb_socket: Could not set IPV6_V6ONLY option to 1 on FD %d: %s", | |
711 | fd, strerror(errno)); | |
712 | close(fd); | |
713 | return NULL; | |
714 | } | |
715 | } | |
716 | #endif | |
717 | ||
718 | F = rb_open(fd, RB_FD_SOCKET, note); | |
719 | if(F == NULL) | |
a9fb3ed0 VY |
720 | { |
721 | rb_lib_log("rb_socket: rb_open returns NULL on FD %d: %s, closing fd", fd, strerror(errno)); | |
722 | close(fd); | |
db137867 | 723 | return NULL; |
a9fb3ed0 | 724 | } |
db137867 | 725 | /* Set the socket non-blocking, and other wonderful bits */ |
c2ac22cc | 726 | if(rb_unlikely(!rb_set_nb(F))) |
db137867 AC |
727 | { |
728 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd, strerror(errno)); | |
729 | rb_close(F); | |
730 | return NULL; | |
731 | } | |
732 | ||
733 | return F; | |
734 | } | |
735 | ||
736 | /* | |
737 | * If a sockaddr_storage is AF_INET6 but is a mapped IPv4 | |
738 | * socket manged the sockaddr. | |
739 | */ | |
740 | #ifdef RB_IPV6 | |
741 | static void | |
742 | mangle_mapped_sockaddr(struct sockaddr *in) | |
743 | { | |
744 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) in; | |
745 | ||
746 | if(in->sa_family == AF_INET) | |
747 | return; | |
748 | ||
749 | if(in->sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&in6->sin6_addr)) | |
750 | { | |
751 | struct sockaddr_in in4; | |
752 | memset(&in4, 0, sizeof(struct sockaddr_in)); | |
753 | in4.sin_family = AF_INET; | |
754 | in4.sin_port = in6->sin6_port; | |
a9fb3ed0 | 755 | in4.sin_addr.s_addr = ((uint32_t *) & in6->sin6_addr)[3]; |
db137867 AC |
756 | memcpy(in, &in4, sizeof(struct sockaddr_in)); |
757 | } | |
758 | return; | |
759 | } | |
760 | #endif | |
761 | ||
762 | /* | |
763 | * rb_listen() - listen on a port | |
764 | */ | |
765 | int | |
766 | rb_listen(rb_fde_t *F, int backlog) | |
767 | { | |
768 | F->type = RB_FD_SOCKET|RB_FD_LISTEN; | |
769 | /* Currently just a simple wrapper for the sake of being complete */ | |
770 | return listen(F->fd, backlog); | |
771 | } | |
772 | ||
773 | void | |
774 | rb_fdlist_init(int closeall, int maxfds, size_t heapsize) | |
775 | { | |
776 | static int initialized = 0; | |
777 | #ifdef WIN32 | |
778 | WSADATA wsaData; | |
779 | int err; | |
780 | int vers = MAKEWORD(2, 0); | |
781 | ||
782 | err = WSAStartup(vers, &wsaData); | |
783 | if(err != 0) | |
784 | { | |
785 | rb_lib_die("WSAStartup failed"); | |
786 | } | |
787 | ||
788 | #endif | |
789 | if(!initialized) | |
790 | { | |
791 | rb_maxconnections = maxfds; | |
792 | if(closeall) | |
793 | rb_close_all(); | |
794 | /* Since we're doing this once .. */ | |
795 | initialized = 1; | |
796 | } | |
797 | fd_heap = rb_bh_create(sizeof(rb_fde_t), heapsize, "librb_fd_heap"); | |
798 | ||
799 | } | |
800 | ||
801 | ||
802 | /* Called to open a given filedescriptor */ | |
803 | rb_fde_t * | |
a9fb3ed0 | 804 | rb_open(int fd, uint8_t type, const char *desc) |
db137867 | 805 | { |
a9fb3ed0 | 806 | rb_fde_t *F; |
db137867 AC |
807 | lrb_assert(fd >= 0); |
808 | ||
a9fb3ed0 VY |
809 | F = add_fd(fd); |
810 | ||
811 | lrb_assert(!IsFDOpen(F)); | |
c2ac22cc | 812 | if(rb_unlikely(IsFDOpen(F))) |
db137867 | 813 | { |
a9fb3ed0 VY |
814 | const char *fdesc; |
815 | if(F != NULL && F->desc != NULL) | |
816 | fdesc = F->desc; | |
817 | else | |
818 | fdesc = "NULL"; | |
819 | rb_lib_log("Trying to rb_open an already open FD: %d desc: %d", fd, fdesc); | |
db137867 AC |
820 | return NULL; |
821 | } | |
db137867 AC |
822 | F->fd = fd; |
823 | F->type = type; | |
824 | SetFDOpen(F); | |
825 | ||
826 | if(desc != NULL) | |
827 | F->desc = rb_strndup(desc, FD_DESC_SZ); | |
828 | number_fd++; | |
829 | return F; | |
830 | } | |
831 | ||
832 | ||
833 | /* Called to close a given filedescriptor */ | |
834 | void | |
835 | rb_close(rb_fde_t *F) | |
836 | { | |
837 | int type, fd; | |
838 | ||
839 | if(F == NULL) | |
840 | return; | |
841 | ||
842 | fd = F->fd; | |
843 | type = F->type; | |
844 | lrb_assert(IsFDOpen(F)); | |
845 | ||
846 | lrb_assert(!(type & RB_FD_FILE)); | |
c2ac22cc | 847 | if(rb_unlikely(type & RB_FD_FILE)) |
db137867 AC |
848 | { |
849 | lrb_assert(F->read_handler == NULL); | |
850 | lrb_assert(F->write_handler == NULL); | |
851 | } | |
852 | rb_setselect(F, RB_SELECT_WRITE | RB_SELECT_READ, NULL, NULL); | |
853 | rb_settimeout(F, 0, NULL, NULL); | |
854 | rb_free(F->accept); | |
855 | rb_free(F->connect); | |
856 | rb_free(F->desc); | |
857 | #ifdef HAVE_SSL | |
858 | if(type & RB_FD_SSL) | |
859 | { | |
860 | rb_ssl_shutdown(F); | |
861 | } | |
862 | #endif /* HAVE_SSL */ | |
863 | if(IsFDOpen(F)) | |
864 | { | |
865 | remove_fd(F); | |
866 | ClearFDOpen(F); | |
867 | } | |
868 | ||
869 | number_fd--; | |
870 | ||
871 | #ifdef WIN32 | |
872 | if(type & (RB_FD_SOCKET|RB_FD_PIPE)) | |
873 | { | |
874 | closesocket(fd); | |
875 | return; | |
876 | } else | |
877 | #endif | |
878 | close(fd); | |
879 | } | |
880 | ||
881 | ||
882 | /* | |
883 | * rb_dump_fd() - dump the list of active filedescriptors | |
884 | */ | |
885 | void | |
886 | rb_dump_fd(DUMPCB * cb, void *data) | |
887 | { | |
888 | static const char *empty = ""; | |
889 | rb_dlink_node *ptr; | |
890 | rb_dlink_list *bucket; | |
891 | rb_fde_t *F; | |
892 | unsigned int i; | |
893 | ||
894 | for(i = 0; i < RB_FD_HASH_SIZE; i++) | |
895 | { | |
896 | bucket = &rb_fd_table[i]; | |
897 | ||
898 | if(rb_dlink_list_length(bucket) <= 0) | |
899 | continue; | |
900 | ||
901 | RB_DLINK_FOREACH(ptr, bucket->head) | |
902 | { | |
903 | F = ptr->data; | |
904 | if(F == NULL || !IsFDOpen(F)) | |
905 | continue; | |
906 | ||
907 | cb(F->fd, F->desc ? F->desc : empty, data); | |
908 | } | |
909 | } | |
910 | } | |
911 | ||
912 | /* | |
913 | * rb_note() - set the fd note | |
914 | * | |
915 | * Note: must be careful not to overflow rb_fd_table[fd].desc when | |
916 | * calling. | |
917 | */ | |
918 | void | |
919 | rb_note(rb_fde_t *F, const char *string) | |
920 | { | |
921 | if(F == NULL) | |
922 | return; | |
923 | ||
924 | rb_free(F->desc); | |
925 | F->desc = rb_strndup(string, FD_DESC_SZ); | |
926 | } | |
927 | ||
928 | void | |
a9fb3ed0 | 929 | rb_set_type(rb_fde_t *F, uint8_t type) |
db137867 AC |
930 | { |
931 | /* if the caller is calling this, lets assume they have a clue */ | |
932 | F->type = type; | |
933 | return; | |
934 | } | |
935 | ||
a9fb3ed0 | 936 | uint8_t |
db137867 AC |
937 | rb_get_type(rb_fde_t *F) |
938 | { | |
939 | return F->type; | |
940 | } | |
941 | ||
942 | int | |
943 | rb_fd_ssl(rb_fde_t *F) | |
944 | { | |
945 | if(F == NULL) | |
946 | return 0; | |
947 | if(F->type & RB_FD_SSL) | |
948 | return 1; | |
949 | return 0; | |
950 | } | |
951 | ||
952 | int | |
953 | rb_get_fd(rb_fde_t *F) | |
954 | { | |
955 | if(F == NULL) | |
956 | return -1; | |
957 | return(F->fd); | |
958 | } | |
959 | ||
960 | rb_fde_t * | |
961 | rb_get_fde(int fd) | |
962 | { | |
963 | return rb_find_fd(fd); | |
964 | } | |
965 | ||
966 | ssize_t | |
967 | rb_read(rb_fde_t *F, void *buf, int count) | |
968 | { | |
ba1721d1 | 969 | ssize_t ret; |
db137867 AC |
970 | if(F == NULL) |
971 | return 0; | |
972 | ||
973 | /* This needs to be *before* RB_FD_SOCKET otherwise you'll process | |
974 | * an SSL socket as a regular socket | |
975 | */ | |
976 | #ifdef HAVE_SSL | |
977 | if(F->type & RB_FD_SSL) | |
978 | { | |
979 | return rb_ssl_read(F, buf, count); | |
980 | } | |
981 | #endif | |
982 | if(F->type & RB_FD_SOCKET) | |
983 | { | |
984 | ret = recv(F->fd, buf, count, 0); | |
985 | if(ret < 0) | |
986 | { | |
987 | rb_get_errno(); | |
988 | } | |
989 | return ret; | |
990 | } | |
991 | ||
992 | ||
993 | /* default case */ | |
994 | return read(F->fd, buf, count); | |
995 | } | |
996 | ||
997 | ||
998 | ssize_t | |
999 | rb_write(rb_fde_t *F, const void *buf, int count) | |
1000 | { | |
ba1721d1 | 1001 | ssize_t ret; |
db137867 AC |
1002 | if(F == NULL) |
1003 | return 0; | |
1004 | ||
1005 | #ifdef HAVE_SSL | |
1006 | if(F->type & RB_FD_SSL) | |
1007 | { | |
1008 | return rb_ssl_write(F, buf, count); | |
1009 | } | |
1010 | #endif | |
1011 | if(F->type & RB_FD_SOCKET) | |
1012 | { | |
1013 | ret = send(F->fd, buf, count, MSG_NOSIGNAL); | |
1014 | if(ret < 0) { | |
1015 | rb_get_errno(); | |
1016 | } | |
1017 | return ret; | |
1018 | } | |
1019 | ||
1020 | return write(F->fd, buf, count); | |
1021 | } | |
1022 | ||
1023 | #if defined(HAVE_SSL) || defined(WIN32) || !defined(HAVE_WRITEV) | |
1024 | static ssize_t | |
1025 | rb_fake_writev(rb_fde_t *F, const struct rb_iovec *vp, size_t vpcount) | |
1026 | { | |
ba1721d1 | 1027 | ssize_t count = 0; |
db137867 AC |
1028 | |
1029 | while (vpcount-- > 0) | |
1030 | { | |
ba1721d1 | 1031 | ssize_t written = rb_write(F, vp->iov_base, vp->iov_len); |
db137867 AC |
1032 | |
1033 | if (written <= 0) | |
1034 | { | |
1035 | if(count > 0) | |
1036 | return count; | |
1037 | else | |
1038 | return written; | |
1039 | } | |
1040 | count += written; | |
1041 | vp++; | |
1042 | } | |
1043 | return (count); | |
1044 | } | |
1045 | #endif | |
1046 | ||
1047 | #if defined(WIN32) || !defined(HAVE_WRITEV) | |
1048 | ssize_t | |
1049 | rb_writev(rb_fde_t *F, struct rb_iovec *vecount, int count) | |
1050 | { | |
1051 | return rb_fake_writev(F, vecount, count); | |
1052 | } | |
1053 | ||
1054 | #else | |
1055 | ssize_t | |
1056 | rb_writev(rb_fde_t *F, struct rb_iovec *vector, int count) | |
1057 | { | |
1058 | if(F == NULL) { | |
1059 | errno = EBADF; | |
1060 | return -1; | |
1061 | } | |
1062 | #ifdef HAVE_SSL | |
1063 | if(F->type & RB_FD_SSL) | |
1064 | { | |
1065 | return rb_fake_writev(F, vector, count); | |
1066 | } | |
1067 | #endif /* HAVE_SSL */ | |
1068 | #ifdef HAVE_SENDMSG | |
1069 | if(F->type & RB_FD_SOCKET) | |
1070 | { | |
1071 | struct msghdr msg; | |
1072 | memset(&msg, 0, sizeof(msg)); | |
1073 | msg.msg_iov = (struct iovec *)vector; | |
1074 | msg.msg_iovlen = count; | |
1075 | return sendmsg(F->fd, &msg, MSG_NOSIGNAL); | |
1076 | } | |
1077 | #endif /* HAVE_SENDMSG */ | |
1078 | return writev(F->fd, (struct iovec *)vector, count); | |
1079 | ||
1080 | } | |
1081 | #endif | |
1082 | ||
1083 | ||
1084 | /* | |
1085 | * From: Thomas Helvey <tomh@inxpress.net> | |
1086 | */ | |
1087 | static const char *IpQuadTab[] = { | |
1088 | "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", | |
1089 | "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", | |
1090 | "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", | |
1091 | "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", | |
1092 | "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", | |
1093 | "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", | |
1094 | "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", | |
1095 | "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", | |
1096 | "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", | |
1097 | "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", | |
1098 | "100", "101", "102", "103", "104", "105", "106", "107", "108", "109", | |
1099 | "110", "111", "112", "113", "114", "115", "116", "117", "118", "119", | |
1100 | "120", "121", "122", "123", "124", "125", "126", "127", "128", "129", | |
1101 | "130", "131", "132", "133", "134", "135", "136", "137", "138", "139", | |
1102 | "140", "141", "142", "143", "144", "145", "146", "147", "148", "149", | |
1103 | "150", "151", "152", "153", "154", "155", "156", "157", "158", "159", | |
1104 | "160", "161", "162", "163", "164", "165", "166", "167", "168", "169", | |
1105 | "170", "171", "172", "173", "174", "175", "176", "177", "178", "179", | |
1106 | "180", "181", "182", "183", "184", "185", "186", "187", "188", "189", | |
1107 | "190", "191", "192", "193", "194", "195", "196", "197", "198", "199", | |
1108 | "200", "201", "202", "203", "204", "205", "206", "207", "208", "209", | |
1109 | "210", "211", "212", "213", "214", "215", "216", "217", "218", "219", | |
1110 | "220", "221", "222", "223", "224", "225", "226", "227", "228", "229", | |
1111 | "230", "231", "232", "233", "234", "235", "236", "237", "238", "239", | |
1112 | "240", "241", "242", "243", "244", "245", "246", "247", "248", "249", | |
1113 | "250", "251", "252", "253", "254", "255" | |
1114 | }; | |
1115 | ||
1116 | /* | |
1117 | * inetntoa - in_addr to string | |
1118 | * changed name to remove collision possibility and | |
1119 | * so behaviour is guaranteed to take a pointer arg. | |
1120 | * -avalon 23/11/92 | |
1121 | * inet_ntoa -- returned the dotted notation of a given | |
1122 | * internet number | |
1123 | * argv 11/90). | |
1124 | * inet_ntoa -- its broken on some Ultrix/Dynix too. -avalon | |
1125 | */ | |
1126 | ||
1127 | static const char * | |
1128 | inetntoa(const char *in) | |
1129 | { | |
1130 | static char buf[16]; | |
1131 | char *bufptr = buf; | |
1132 | const unsigned char *a = (const unsigned char *) in; | |
1133 | const char *n; | |
1134 | ||
1135 | n = IpQuadTab[*a++]; | |
1136 | while (*n) | |
1137 | *bufptr++ = *n++; | |
1138 | *bufptr++ = '.'; | |
1139 | n = IpQuadTab[*a++]; | |
1140 | while (*n) | |
1141 | *bufptr++ = *n++; | |
1142 | *bufptr++ = '.'; | |
1143 | n = IpQuadTab[*a++]; | |
1144 | while (*n) | |
1145 | *bufptr++ = *n++; | |
1146 | *bufptr++ = '.'; | |
1147 | n = IpQuadTab[*a]; | |
1148 | while (*n) | |
1149 | *bufptr++ = *n++; | |
1150 | *bufptr = '\0'; | |
1151 | return buf; | |
1152 | } | |
1153 | ||
1154 | ||
1155 | /* | |
1156 | * Copyright (c) 1996-1999 by Internet Software Consortium. | |
1157 | * | |
1158 | * Permission to use, copy, modify, and distribute this software for any | |
1159 | * purpose with or without fee is hereby granted, provided that the above | |
1160 | * copyright notice and this permission notice appear in all copies. | |
1161 | * | |
1162 | * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS | |
1163 | * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES | |
1164 | * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE | |
1165 | * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL | |
1166 | * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR | |
1167 | * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS | |
1168 | * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS | |
1169 | * SOFTWARE. | |
1170 | */ | |
1171 | ||
1172 | #define SPRINTF(x) ((size_t)rb_sprintf x) | |
1173 | ||
1174 | /* | |
1175 | * WARNING: Don't even consider trying to compile this on a system where | |
1176 | * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. | |
1177 | */ | |
1178 | ||
1179 | static const char *inet_ntop4(const unsigned char * src, char *dst, unsigned int size); | |
1180 | #ifdef RB_IPV6 | |
1181 | static const char *inet_ntop6(const unsigned char * src, char *dst, unsigned int size); | |
1182 | #endif | |
1183 | ||
1184 | /* const char * | |
1185 | * inet_ntop4(src, dst, size) | |
1186 | * format an IPv4 address | |
1187 | * return: | |
1188 | * `dst' (as a const) | |
1189 | * notes: | |
1190 | * (1) uses no statics | |
1191 | * (2) takes a unsigned char* not an in_addr as input | |
1192 | * author: | |
1193 | * Paul Vixie, 1996. | |
1194 | */ | |
1195 | static const char * | |
1196 | inet_ntop4(const unsigned char *src, char *dst, unsigned int size) | |
1197 | { | |
1198 | if(size < 16) | |
1199 | return NULL; | |
1200 | return strcpy(dst, inetntoa((const char *) src)); | |
1201 | } | |
1202 | ||
1203 | /* const char * | |
1204 | * inet_ntop6(src, dst, size) | |
1205 | * convert IPv6 binary address into presentation (printable) format | |
1206 | * author: | |
1207 | * Paul Vixie, 1996. | |
1208 | */ | |
1209 | #ifdef RB_IPV6 | |
1210 | static const char * | |
1211 | inet_ntop6(const unsigned char *src, char *dst, unsigned int size) | |
1212 | { | |
1213 | /* | |
1214 | * Note that int32_t and int16_t need only be "at least" large enough | |
1215 | * to contain a value of the specified size. On some systems, like | |
1216 | * Crays, there is no such thing as an integer variable with 16 bits. | |
1217 | * Keep this in mind if you think this function should have been coded | |
1218 | * to use pointer overlays. All the world's not a VAX. | |
1219 | */ | |
1220 | char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp; | |
1221 | struct | |
1222 | { | |
1223 | int base, len; | |
1224 | } | |
1225 | best, cur; | |
1226 | unsigned int words[IN6ADDRSZ / INT16SZ]; | |
1227 | int i; | |
1228 | ||
1229 | /* | |
1230 | * Preprocess: | |
1231 | * Copy the input (bytewise) array into a wordwise array. | |
1232 | * Find the longest run of 0x00's in src[] for :: shorthanding. | |
1233 | */ | |
1234 | memset(words, '\0', sizeof words); | |
1235 | for (i = 0; i < IN6ADDRSZ; i += 2) | |
1236 | words[i / 2] = (src[i] << 8) | src[i + 1]; | |
1237 | best.base = -1; | |
1238 | best.len = 0; | |
1239 | cur.base = -1; | |
1240 | cur.len = 0; | |
1241 | for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) | |
1242 | { | |
1243 | if(words[i] == 0) | |
1244 | { | |
1245 | if(cur.base == -1) | |
1246 | cur.base = i, cur.len = 1; | |
1247 | else | |
1248 | cur.len++; | |
1249 | } | |
1250 | else | |
1251 | { | |
1252 | if(cur.base != -1) | |
1253 | { | |
1254 | if(best.base == -1 || cur.len > best.len) | |
1255 | best = cur; | |
1256 | cur.base = -1; | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | if(cur.base != -1) | |
1261 | { | |
1262 | if(best.base == -1 || cur.len > best.len) | |
1263 | best = cur; | |
1264 | } | |
1265 | if(best.base != -1 && best.len < 2) | |
1266 | best.base = -1; | |
1267 | ||
1268 | /* | |
1269 | * Format the result. | |
1270 | */ | |
1271 | tp = tmp; | |
1272 | for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++) | |
1273 | { | |
1274 | /* Are we inside the best run of 0x00's? */ | |
1275 | if(best.base != -1 && i >= best.base && i < (best.base + best.len)) | |
1276 | { | |
1277 | if(i == best.base) | |
1278 | { | |
1279 | if(i == 0) | |
1280 | *tp++ = '0'; | |
1281 | *tp++ = ':'; | |
1282 | } | |
1283 | continue; | |
1284 | } | |
1285 | /* Are we following an initial run of 0x00s or any real hex? */ | |
1286 | if(i != 0) | |
1287 | *tp++ = ':'; | |
1288 | /* Is this address an encapsulated IPv4? */ | |
1289 | if(i == 6 && best.base == 0 && | |
1290 | (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) | |
1291 | { | |
1292 | if(!inet_ntop4(src + 12, tp, sizeof tmp - (tp - tmp))) | |
1293 | return (NULL); | |
1294 | tp += strlen(tp); | |
1295 | break; | |
1296 | } | |
1297 | tp += SPRINTF((tp, "%x", words[i])); | |
1298 | } | |
1299 | /* Was it a trailing run of 0x00's? */ | |
1300 | if(best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) | |
1301 | *tp++ = ':'; | |
1302 | *tp++ = '\0'; | |
1303 | ||
1304 | /* | |
1305 | * Check for overflow, copy, and we're done. | |
1306 | */ | |
1307 | ||
1308 | if((unsigned int) (tp - tmp) > size) | |
1309 | { | |
1310 | return (NULL); | |
1311 | } | |
1312 | return strcpy(dst, tmp); | |
1313 | } | |
1314 | #endif | |
1315 | ||
1316 | int | |
1317 | rb_inet_pton_sock(const char *src, struct sockaddr *dst) | |
1318 | { | |
1319 | if(rb_inet_pton(AF_INET, src, &((struct sockaddr_in *) dst)->sin_addr)) | |
1320 | { | |
1321 | ((struct sockaddr_in *) dst)->sin_port = 0; | |
1322 | ((struct sockaddr_in *) dst)->sin_family = AF_INET; | |
1323 | SET_SS_LEN(dst, sizeof(struct sockaddr_in)); | |
1324 | return 1; | |
1325 | } | |
1326 | #ifdef RB_IPV6 | |
1327 | else if(rb_inet_pton(AF_INET6, src, &((struct sockaddr_in6 *) dst)->sin6_addr)) | |
1328 | { | |
1329 | ((struct sockaddr_in6 *) dst)->sin6_port = 0; | |
1330 | ((struct sockaddr_in6 *) dst)->sin6_family = AF_INET6; | |
1331 | SET_SS_LEN(dst, sizeof(struct sockaddr_in6)); | |
1332 | return 1; | |
1333 | } | |
1334 | #endif | |
1335 | return 0; | |
1336 | } | |
1337 | ||
1338 | const char * | |
1339 | rb_inet_ntop_sock(struct sockaddr *src, char *dst, unsigned int size) | |
1340 | { | |
1341 | switch (src->sa_family) | |
1342 | { | |
1343 | case AF_INET: | |
1344 | return (rb_inet_ntop(AF_INET, &((struct sockaddr_in *) src)->sin_addr, dst, size)); | |
1345 | break; | |
1346 | #ifdef RB_IPV6 | |
1347 | case AF_INET6: | |
1348 | return (rb_inet_ntop(AF_INET6, &((struct sockaddr_in6 *) src)->sin6_addr, dst, size)); | |
1349 | break; | |
1350 | #endif | |
1351 | default: | |
1352 | return NULL; | |
1353 | break; | |
1354 | } | |
1355 | } | |
1356 | ||
1357 | /* char * | |
1358 | * rb_inet_ntop(af, src, dst, size) | |
1359 | * convert a network format address to presentation format. | |
1360 | * return: | |
1361 | * pointer to presentation format address (`dst'), or NULL (see errno). | |
1362 | * author: | |
1363 | * Paul Vixie, 1996. | |
1364 | */ | |
1365 | const char * | |
1366 | rb_inet_ntop(int af, const void *src, char *dst, unsigned int size) | |
1367 | { | |
1368 | switch (af) | |
1369 | { | |
1370 | case AF_INET: | |
1371 | return (inet_ntop4(src, dst, size)); | |
1372 | #ifdef RB_IPV6 | |
1373 | case AF_INET6: | |
1374 | if(IN6_IS_ADDR_V4MAPPED((const struct in6_addr *) src) || | |
1375 | IN6_IS_ADDR_V4COMPAT((const struct in6_addr *) src)) | |
1376 | return (inet_ntop4 | |
1377 | ((const unsigned char *) | |
1378 | &((const struct in6_addr *) src)->s6_addr[12], dst, size)); | |
1379 | else | |
1380 | return (inet_ntop6(src, dst, size)); | |
1381 | ||
1382 | ||
1383 | #endif | |
1384 | default: | |
1385 | return (NULL); | |
1386 | } | |
1387 | /* NOTREACHED */ | |
1388 | } | |
1389 | ||
1390 | /* | |
1391 | * WARNING: Don't even consider trying to compile this on a system where | |
1392 | * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. | |
1393 | */ | |
1394 | ||
1395 | /* int | |
1396 | * rb_inet_pton(af, src, dst) | |
1397 | * convert from presentation format (which usually means ASCII printable) | |
1398 | * to network format (which is usually some kind of binary format). | |
1399 | * return: | |
1400 | * 1 if the address was valid for the specified address family | |
1401 | * 0 if the address wasn't valid (`dst' is untouched in this case) | |
1402 | * -1 if some other error occurred (`dst' is untouched in this case, too) | |
1403 | * author: | |
1404 | * Paul Vixie, 1996. | |
1405 | */ | |
1406 | ||
1407 | /* int | |
1408 | * inet_pton4(src, dst) | |
1409 | * like inet_aton() but without all the hexadecimal and shorthand. | |
1410 | * return: | |
1411 | * 1 if `src' is a valid dotted quad, else 0. | |
1412 | * notice: | |
1413 | * does not touch `dst' unless it's returning 1. | |
1414 | * author: | |
1415 | * Paul Vixie, 1996. | |
1416 | */ | |
1417 | static int | |
1418 | inet_pton4(const char *src, unsigned char *dst) | |
1419 | { | |
1420 | int saw_digit, octets, ch; | |
1421 | unsigned char tmp[INADDRSZ], *tp; | |
1422 | ||
1423 | saw_digit = 0; | |
1424 | octets = 0; | |
1425 | *(tp = tmp) = 0; | |
1426 | while ((ch = *src++) != '\0') | |
1427 | { | |
1428 | ||
1429 | if(ch >= '0' && ch <= '9') | |
1430 | { | |
1431 | unsigned int new = *tp * 10 + (ch - '0'); | |
1432 | ||
1433 | if(new > 255) | |
1434 | return (0); | |
1435 | *tp = new; | |
1436 | if(!saw_digit) | |
1437 | { | |
1438 | if(++octets > 4) | |
1439 | return (0); | |
1440 | saw_digit = 1; | |
1441 | } | |
1442 | } | |
1443 | else if(ch == '.' && saw_digit) | |
1444 | { | |
1445 | if(octets == 4) | |
1446 | return (0); | |
1447 | *++tp = 0; | |
1448 | saw_digit = 0; | |
1449 | } | |
1450 | else | |
1451 | return (0); | |
1452 | } | |
1453 | if(octets < 4) | |
1454 | return (0); | |
1455 | memcpy(dst, tmp, INADDRSZ); | |
1456 | return (1); | |
1457 | } | |
1458 | ||
1459 | #ifdef RB_IPV6 | |
1460 | /* int | |
1461 | * inet_pton6(src, dst) | |
1462 | * convert presentation level address to network order binary form. | |
1463 | * return: | |
1464 | * 1 if `src' is a valid [RFC1884 2.2] address, else 0. | |
1465 | * notice: | |
1466 | * (1) does not touch `dst' unless it's returning 1. | |
1467 | * (2) :: in a full address is silently ignored. | |
1468 | * credit: | |
1469 | * inspired by Mark Andrews. | |
1470 | * author: | |
1471 | * Paul Vixie, 1996. | |
1472 | */ | |
1473 | ||
1474 | static int | |
1475 | inet_pton6(const char *src, unsigned char *dst) | |
1476 | { | |
1477 | static const char xdigits[] = "0123456789abcdef"; | |
1478 | unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp; | |
1479 | const char *curtok; | |
1480 | int ch, saw_xdigit; | |
1481 | unsigned int val; | |
1482 | ||
1483 | tp = memset(tmp, '\0', IN6ADDRSZ); | |
1484 | endp = tp + IN6ADDRSZ; | |
1485 | colonp = NULL; | |
1486 | /* Leading :: requires some special handling. */ | |
1487 | if(*src == ':') | |
1488 | if(*++src != ':') | |
1489 | return (0); | |
1490 | curtok = src; | |
1491 | saw_xdigit = 0; | |
1492 | val = 0; | |
1493 | while ((ch = tolower(*src++)) != '\0') | |
1494 | { | |
1495 | const char *pch; | |
1496 | ||
1497 | pch = strchr(xdigits, ch); | |
1498 | if(pch != NULL) | |
1499 | { | |
1500 | val <<= 4; | |
1501 | val |= (pch - xdigits); | |
1502 | if(val > 0xffff) | |
1503 | return (0); | |
1504 | saw_xdigit = 1; | |
1505 | continue; | |
1506 | } | |
1507 | if(ch == ':') | |
1508 | { | |
1509 | curtok = src; | |
1510 | if(!saw_xdigit) | |
1511 | { | |
1512 | if(colonp) | |
1513 | return (0); | |
1514 | colonp = tp; | |
1515 | continue; | |
1516 | } | |
1517 | else if(*src == '\0') | |
1518 | { | |
1519 | return (0); | |
1520 | } | |
1521 | if(tp + INT16SZ > endp) | |
1522 | return (0); | |
1523 | *tp++ = (unsigned char) (val >> 8) & 0xff; | |
1524 | *tp++ = (unsigned char) val & 0xff; | |
1525 | saw_xdigit = 0; | |
1526 | val = 0; | |
1527 | continue; | |
1528 | } | |
1529 | if(*src != '\0' && ch == '.') | |
1530 | { | |
1531 | if(((tp + INADDRSZ) <= endp) && inet_pton4(curtok, tp) > 0) | |
1532 | { | |
1533 | tp += INADDRSZ; | |
1534 | saw_xdigit = 0; | |
1535 | break; /* '\0' was seen by inet_pton4(). */ | |
1536 | } | |
1537 | } | |
1538 | else | |
1539 | continue; | |
1540 | return (0); | |
1541 | } | |
1542 | if(saw_xdigit) | |
1543 | { | |
1544 | if(tp + INT16SZ > endp) | |
1545 | return (0); | |
1546 | *tp++ = (unsigned char) (val >> 8) & 0xff; | |
1547 | *tp++ = (unsigned char) val & 0xff; | |
1548 | } | |
1549 | if(colonp != NULL) | |
1550 | { | |
1551 | /* | |
1552 | * Since some memmove()'s erroneously fail to handle | |
1553 | * overlapping regions, we'll do the shift by hand. | |
1554 | */ | |
1555 | const int n = tp - colonp; | |
1556 | int i; | |
1557 | ||
1558 | if(tp == endp) | |
1559 | return (0); | |
1560 | for (i = 1; i <= n; i++) | |
1561 | { | |
1562 | endp[-i] = colonp[n - i]; | |
1563 | colonp[n - i] = 0; | |
1564 | } | |
1565 | tp = endp; | |
1566 | } | |
1567 | if(tp != endp) | |
1568 | return (0); | |
1569 | memcpy(dst, tmp, IN6ADDRSZ); | |
1570 | return (1); | |
1571 | } | |
1572 | #endif | |
1573 | int | |
1574 | rb_inet_pton(int af, const char *src, void *dst) | |
1575 | { | |
1576 | switch (af) | |
1577 | { | |
1578 | case AF_INET: | |
1579 | return (inet_pton4(src, dst)); | |
1580 | #ifdef RB_IPV6 | |
1581 | case AF_INET6: | |
1582 | /* Somebody might have passed as an IPv4 address this is sick but it works */ | |
1583 | if(inet_pton4(src, dst)) | |
1584 | { | |
1585 | char tmp[HOSTIPLEN]; | |
1586 | rb_sprintf(tmp, "::ffff:%s", src); | |
1587 | return (inet_pton6(tmp, dst)); | |
1588 | } | |
1589 | else | |
1590 | return (inet_pton6(src, dst)); | |
1591 | #endif | |
1592 | default: | |
1593 | return (-1); | |
1594 | } | |
1595 | /* NOTREACHED */ | |
1596 | } | |
1597 | ||
1598 | ||
1599 | #ifndef HAVE_SOCKETPAIR | |
1600 | int | |
1601 | rb_inet_socketpair(int family, int type, int protocol, int fd[2]) | |
1602 | { | |
1603 | int listener = -1; | |
1604 | int connector = -1; | |
1605 | int acceptor = -1; | |
1606 | struct sockaddr_in listen_addr; | |
1607 | struct sockaddr_in connect_addr; | |
1608 | size_t size; | |
1609 | ||
1610 | if(protocol || family != AF_INET) | |
1611 | { | |
1612 | errno = EAFNOSUPPORT; | |
1613 | return -1; | |
1614 | } | |
1615 | if(!fd) | |
1616 | { | |
1617 | errno = EINVAL; | |
1618 | return -1; | |
1619 | } | |
1620 | ||
1621 | listener = socket(AF_INET, type, 0); | |
1622 | if(listener == -1) | |
1623 | return -1; | |
1624 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
1625 | listen_addr.sin_family = AF_INET; | |
1626 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1627 | listen_addr.sin_port = 0; /* kernel choses port. */ | |
1628 | if(bind(listener, (struct sockaddr *) &listen_addr, sizeof(listen_addr)) == -1) | |
1629 | goto tidy_up_and_fail; | |
1630 | if(listen(listener, 1) == -1) | |
1631 | goto tidy_up_and_fail; | |
1632 | ||
1633 | connector = socket(AF_INET, type, 0); | |
1634 | if(connector == -1) | |
1635 | goto tidy_up_and_fail; | |
1636 | /* We want to find out the port number to connect to. */ | |
1637 | size = sizeof(connect_addr); | |
1638 | if(getsockname(listener, (struct sockaddr *) &connect_addr, &size) == -1) | |
1639 | goto tidy_up_and_fail; | |
1640 | if(size != sizeof(connect_addr)) | |
1641 | goto abort_tidy_up_and_fail; | |
1642 | if(connect(connector, (struct sockaddr *) &connect_addr, sizeof(connect_addr)) == -1) | |
1643 | goto tidy_up_and_fail; | |
1644 | ||
1645 | size = sizeof(listen_addr); | |
1646 | acceptor = accept(listener, (struct sockaddr *) &listen_addr, &size); | |
1647 | if(acceptor == -1) | |
1648 | goto tidy_up_and_fail; | |
1649 | if(size != sizeof(listen_addr)) | |
1650 | goto abort_tidy_up_and_fail; | |
1651 | close(listener); | |
1652 | /* Now check we are talking to ourself by matching port and host on the | |
1653 | two sockets. */ | |
1654 | if(getsockname(connector, (struct sockaddr *) &connect_addr, &size) == -1) | |
1655 | goto tidy_up_and_fail; | |
1656 | if(size != sizeof(connect_addr) | |
1657 | || listen_addr.sin_family != connect_addr.sin_family | |
1658 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
1659 | || listen_addr.sin_port != connect_addr.sin_port) | |
1660 | { | |
1661 | goto abort_tidy_up_and_fail; | |
1662 | } | |
1663 | fd[0] = connector; | |
1664 | fd[1] = acceptor; | |
1665 | return 0; | |
1666 | ||
1667 | abort_tidy_up_and_fail: | |
1668 | errno = EINVAL; /* I hope this is portable and appropriate. */ | |
1669 | ||
1670 | tidy_up_and_fail: | |
1671 | { | |
1672 | int save_errno = errno; | |
1673 | if(listener != -1) | |
1674 | close(listener); | |
1675 | if(connector != -1) | |
1676 | close(connector); | |
1677 | if(acceptor != -1) | |
1678 | close(acceptor); | |
1679 | errno = save_errno; | |
1680 | return -1; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | #endif | |
1685 | ||
1686 | ||
1687 | static void (*setselect_handler) (rb_fde_t *, unsigned int, PF *, void *); | |
1688 | static int (*select_handler) (long); | |
1689 | static int (*setup_fd_handler) (rb_fde_t *); | |
1690 | static int (*io_sched_event) (struct ev_entry *, int); | |
1691 | static void (*io_unsched_event) (struct ev_entry *); | |
1692 | static int (*io_supports_event) (void); | |
1693 | static void (*io_init_event) (void); | |
1694 | static char iotype[25]; | |
1695 | ||
1696 | const char * | |
1697 | rb_get_iotype(void) | |
1698 | { | |
1699 | return iotype; | |
1700 | } | |
1701 | ||
1702 | static int | |
1703 | rb_unsupported_event(void) | |
1704 | { | |
1705 | return 0; | |
1706 | } | |
1707 | ||
1708 | static int | |
1709 | try_kqueue(void) | |
1710 | { | |
1711 | if(!rb_init_netio_kqueue()) | |
1712 | { | |
1713 | setselect_handler = rb_setselect_kqueue; | |
1714 | select_handler = rb_select_kqueue; | |
1715 | setup_fd_handler = rb_setup_fd_kqueue; | |
1716 | io_sched_event = rb_kqueue_sched_event; | |
1717 | io_unsched_event = rb_kqueue_unsched_event; | |
1718 | io_init_event = rb_kqueue_init_event; | |
1719 | io_supports_event = rb_kqueue_supports_event; | |
1720 | rb_strlcpy(iotype, "kqueue", sizeof(iotype)); | |
1721 | return 0; | |
1722 | } | |
1723 | return -1; | |
1724 | } | |
1725 | ||
1726 | static int | |
1727 | try_epoll(void) | |
1728 | { | |
1729 | if(!rb_init_netio_epoll()) | |
1730 | { | |
1731 | setselect_handler = rb_setselect_epoll; | |
1732 | select_handler = rb_select_epoll; | |
1733 | setup_fd_handler = rb_setup_fd_epoll; | |
1734 | io_sched_event = rb_epoll_sched_event; | |
1735 | io_unsched_event = rb_epoll_unsched_event; | |
1736 | io_supports_event = rb_epoll_supports_event; | |
1737 | io_init_event = rb_epoll_init_event; | |
1738 | rb_strlcpy(iotype, "epoll", sizeof(iotype)); | |
1739 | return 0; | |
1740 | } | |
1741 | return -1; | |
1742 | } | |
1743 | ||
1744 | static int | |
1745 | try_ports(void) | |
1746 | { | |
1747 | if(!rb_init_netio_ports()) | |
1748 | { | |
1749 | setselect_handler = rb_setselect_ports; | |
1750 | select_handler = rb_select_ports; | |
1751 | setup_fd_handler = rb_setup_fd_ports; | |
1752 | io_sched_event = NULL; | |
1753 | io_unsched_event = NULL; | |
1754 | io_init_event = NULL; | |
1755 | io_supports_event = rb_unsupported_event; | |
1756 | rb_strlcpy(iotype, "ports", sizeof(iotype)); | |
1757 | return 0; | |
1758 | } | |
1759 | return -1; | |
1760 | } | |
1761 | ||
1762 | static int | |
1763 | try_devpoll(void) | |
1764 | { | |
1765 | if(!rb_init_netio_devpoll()) | |
1766 | { | |
1767 | setselect_handler = rb_setselect_devpoll; | |
1768 | select_handler = rb_select_devpoll; | |
1769 | setup_fd_handler = rb_setup_fd_devpoll; | |
1770 | io_sched_event = NULL; | |
1771 | io_unsched_event = NULL; | |
1772 | io_init_event = NULL; | |
1773 | io_supports_event = rb_unsupported_event; | |
1774 | rb_strlcpy(iotype, "devpoll", sizeof(iotype)); | |
1775 | return 0; | |
1776 | } | |
1777 | return -1; | |
1778 | } | |
1779 | ||
1780 | static int | |
1781 | try_sigio(void) | |
1782 | { | |
1783 | if(!rb_init_netio_sigio()) | |
1784 | { | |
1785 | setselect_handler = rb_setselect_sigio; | |
1786 | select_handler = rb_select_sigio; | |
1787 | setup_fd_handler = rb_setup_fd_sigio; | |
1788 | io_sched_event = rb_sigio_sched_event; | |
1789 | io_unsched_event = rb_sigio_unsched_event; | |
1790 | io_supports_event = rb_sigio_supports_event; | |
1791 | io_init_event = rb_sigio_init_event; | |
1792 | ||
1793 | rb_strlcpy(iotype, "sigio", sizeof(iotype)); | |
1794 | return 0; | |
1795 | } | |
1796 | return -1; | |
1797 | } | |
1798 | ||
1799 | static int | |
1800 | try_poll(void) | |
1801 | { | |
1802 | if(!rb_init_netio_poll()) | |
1803 | { | |
1804 | setselect_handler = rb_setselect_poll; | |
1805 | select_handler = rb_select_poll; | |
1806 | setup_fd_handler = rb_setup_fd_poll; | |
1807 | io_sched_event = NULL; | |
1808 | io_unsched_event = NULL; | |
1809 | io_init_event = NULL; | |
1810 | io_supports_event = rb_unsupported_event; | |
1811 | rb_strlcpy(iotype, "poll", sizeof(iotype)); | |
1812 | return 0; | |
1813 | } | |
1814 | return -1; | |
1815 | } | |
1816 | ||
1817 | static int | |
1818 | try_win32(void) | |
1819 | { | |
1820 | if(!rb_init_netio_win32()) | |
1821 | { | |
1822 | setselect_handler = rb_setselect_win32; | |
1823 | select_handler = rb_select_win32; | |
1824 | setup_fd_handler = rb_setup_fd_win32; | |
1825 | io_sched_event = NULL; | |
1826 | io_unsched_event = NULL; | |
1827 | io_init_event = NULL; | |
1828 | io_supports_event = rb_unsupported_event; | |
1829 | rb_strlcpy(iotype, "win32", sizeof(iotype)); | |
1830 | return 0; | |
1831 | } | |
1832 | return -1; | |
1833 | } | |
1834 | ||
1835 | static int | |
1836 | try_select(void) | |
1837 | { | |
1838 | if(!rb_init_netio_select()) | |
1839 | { | |
1840 | setselect_handler = rb_setselect_select; | |
1841 | select_handler = rb_select_select; | |
1842 | setup_fd_handler = rb_setup_fd_select; | |
1843 | io_sched_event = NULL; | |
1844 | io_unsched_event = NULL; | |
1845 | io_init_event = NULL; | |
1846 | io_supports_event = rb_unsupported_event; | |
1847 | rb_strlcpy(iotype, "select", sizeof(iotype)); | |
1848 | return 0; | |
1849 | } | |
1850 | return -1; | |
1851 | } | |
1852 | ||
1853 | ||
1854 | int | |
1855 | rb_io_sched_event(struct ev_entry *ev, int when) | |
1856 | { | |
1857 | if(ev == NULL || io_supports_event == NULL || io_sched_event == NULL || !io_supports_event()) | |
1858 | return 0; | |
1859 | return io_sched_event(ev, when); | |
1860 | } | |
1861 | ||
1862 | void | |
1863 | rb_io_unsched_event(struct ev_entry *ev) | |
1864 | { | |
1865 | if(ev == NULL || io_supports_event == NULL || io_unsched_event == NULL || !io_supports_event()) | |
1866 | return; | |
1867 | io_unsched_event(ev); | |
1868 | } | |
1869 | int | |
1870 | rb_io_supports_event(void) | |
1871 | { | |
1872 | if(io_supports_event == NULL) | |
1873 | return 0; | |
1874 | return io_supports_event(); | |
1875 | } | |
1876 | ||
1877 | void | |
1878 | rb_io_init_event(void) | |
1879 | { | |
1880 | io_init_event(); | |
1881 | rb_event_io_register_all(); | |
1882 | } | |
1883 | ||
1884 | void | |
1885 | rb_init_netio(void) | |
1886 | { | |
1887 | char *ioenv = getenv("LIBRB_USE_IOTYPE"); | |
1888 | rb_fd_table = rb_malloc(RB_FD_HASH_SIZE * sizeof(rb_dlink_list)); | |
1889 | rb_init_ssl(); | |
1890 | ||
1891 | if(ioenv != NULL) | |
1892 | { | |
1893 | if(!strcmp("epoll", ioenv)) | |
1894 | { | |
1895 | if(!try_epoll()) | |
1896 | return; | |
1897 | } else | |
1898 | if(!strcmp("kqueue", ioenv)) | |
1899 | { | |
1900 | if(!try_kqueue()) | |
1901 | return; | |
1902 | } else | |
1903 | if(!strcmp("ports", ioenv)) | |
1904 | { | |
1905 | if(!try_ports()) | |
1906 | return; | |
1907 | } else | |
1908 | if(!strcmp("poll", ioenv)) | |
1909 | { | |
1910 | if(!try_poll()) | |
1911 | return; | |
1912 | } else | |
1913 | if(!strcmp("devpoll", ioenv)) | |
1914 | { | |
1915 | if(!try_devpoll()) | |
1916 | return; | |
1917 | } else | |
1918 | if(!strcmp("sigio", ioenv)) | |
1919 | { | |
1920 | if(!try_sigio()) | |
1921 | return; | |
1922 | } else | |
1923 | if(!strcmp("win32", ioenv)) | |
1924 | { | |
1925 | if(!try_win32()) | |
1926 | return; | |
1927 | } | |
1928 | if(!strcmp("select", ioenv)) | |
1929 | { | |
1930 | if(!try_select()) | |
1931 | return; | |
1932 | } | |
1933 | ||
1934 | } | |
1935 | ||
1936 | if(!try_kqueue()) | |
1937 | return; | |
1938 | if(!try_epoll()) | |
1939 | return; | |
1940 | if(!try_ports()) | |
1941 | return; | |
1942 | if(!try_devpoll()) | |
1943 | return; | |
1944 | if(!try_sigio()) | |
1945 | return; | |
1946 | if(!try_poll()) | |
1947 | return; | |
1948 | if(!try_win32()) | |
1949 | return; | |
1950 | if(!try_select()) | |
1951 | return; | |
1952 | ||
1953 | rb_lib_log("rb_init_netio: Could not find any io handlers...giving up"); | |
1954 | ||
1955 | abort(); | |
1956 | } | |
1957 | ||
1958 | void | |
1959 | rb_setselect(rb_fde_t *F, unsigned int type, PF * handler, void *client_data) | |
1960 | { | |
1961 | setselect_handler(F, type, handler, client_data); | |
1962 | } | |
1963 | ||
1964 | int | |
1965 | rb_select(unsigned long timeout) | |
1966 | { | |
1967 | int ret = select_handler(timeout); | |
1968 | free_fds(); | |
1969 | return ret; | |
1970 | } | |
1971 | ||
1972 | int | |
1973 | rb_setup_fd(rb_fde_t *F) | |
1974 | { | |
1975 | return setup_fd_handler(F); | |
1976 | } | |
1977 | ||
1978 | ||
1979 | ||
1980 | int | |
1981 | rb_ignore_errno(int error) | |
1982 | { | |
1983 | switch(error) | |
1984 | { | |
1985 | #ifdef EINPROGRESS | |
1986 | case EINPROGRESS: | |
1987 | #endif | |
1988 | #if defined EWOULDBLOCK | |
1989 | case EWOULDBLOCK: | |
1990 | #endif | |
1991 | #if defined(EAGAIN) && (EWOULDBLOCK != EAGAIN) | |
1992 | case EAGAIN: | |
1993 | #endif | |
1994 | #ifdef EINTR | |
1995 | case EINTR: | |
1996 | #endif | |
1997 | #ifdef ERESTART | |
1998 | case ERESTART: | |
1999 | #endif | |
2000 | #ifdef ENOBUFS | |
2001 | case ENOBUFS: | |
2002 | #endif | |
2003 | return 1; | |
2004 | default: | |
2005 | break; | |
2006 | } | |
2007 | return 0; | |
2008 | } | |
2009 | ||
2010 | ||
2011 | int | |
2012 | rb_recv_fd_buf(rb_fde_t *F, void *data, size_t datasize, rb_fde_t **xF, int nfds) | |
2013 | { | |
2014 | struct msghdr msg; | |
2015 | struct cmsghdr *cmsg; | |
2016 | struct iovec iov[1]; | |
2017 | struct stat st; | |
a9fb3ed0 | 2018 | uint8_t stype = RB_FD_UNKNOWN; |
db137867 AC |
2019 | const char *desc; |
2020 | int fd, len, x, rfds; | |
2021 | ||
2022 | int control_len = CMSG_SPACE(sizeof(int) * nfds); | |
2023 | ||
2024 | iov[0].iov_base = data; | |
2025 | iov[0].iov_len = datasize; | |
2026 | ||
2027 | msg.msg_name = NULL; | |
2028 | msg.msg_namelen = 0; | |
2029 | msg.msg_iov = iov; | |
2030 | msg.msg_iovlen = 1; | |
2031 | msg.msg_flags = 0; | |
2032 | cmsg = alloca(control_len); | |
2033 | msg.msg_control = cmsg; | |
2034 | msg.msg_controllen = control_len; | |
2035 | ||
2036 | if((len = recvmsg(rb_get_fd(F), &msg, 0)) <= 0) | |
2037 | return len; | |
2038 | ||
2039 | if(msg.msg_controllen > 0 && msg.msg_control != NULL && (cmsg = CMSG_FIRSTHDR(&msg)) != NULL) | |
2040 | { | |
2041 | rfds = (msg.msg_controllen - sizeof(struct cmsghdr)) / sizeof(int); | |
2042 | ||
2043 | for(x = 0; x < nfds && x < rfds; x++) | |
2044 | { | |
2045 | fd = ((int *)CMSG_DATA(cmsg))[x]; | |
2046 | stype = RB_FD_UNKNOWN; | |
2047 | desc = "remote unknown"; | |
2048 | if(!fstat(fd, &st)) | |
2049 | { | |
2050 | if(S_ISSOCK(st.st_mode)) | |
2051 | { | |
2052 | stype = RB_FD_SOCKET; | |
2053 | desc = "remote socket"; | |
2054 | } | |
2055 | else if(S_ISFIFO(st.st_mode)) | |
2056 | { | |
2057 | stype = RB_FD_PIPE; | |
2058 | desc = "remote pipe"; | |
2059 | } | |
2060 | else if(S_ISREG(st.st_mode)) | |
2061 | { | |
2062 | stype = RB_FD_FILE; | |
2063 | desc = "remote file"; | |
2064 | } | |
2065 | } | |
2066 | xF[x] = rb_open(fd, stype, desc); | |
2067 | } | |
2068 | } else | |
2069 | *xF = NULL; | |
2070 | return len; | |
2071 | } | |
2072 | ||
2073 | ||
2074 | int | |
2075 | rb_send_fd_buf(rb_fde_t *xF, rb_fde_t **F, int count, void *data, size_t datasize) | |
2076 | { | |
2077 | int n; | |
2078 | struct msghdr msg; | |
2079 | struct cmsghdr *cmsg; | |
2080 | struct iovec iov[1]; | |
2081 | char empty = '0'; | |
2082 | char *buf; | |
2083 | ||
2084 | memset(&msg, 0, sizeof(&msg)); | |
2085 | if(datasize == 0) | |
2086 | { | |
2087 | iov[0].iov_base = ∅ | |
2088 | iov[0].iov_len = 1; | |
2089 | } else { | |
2090 | iov[0].iov_base = data; | |
2091 | iov[0].iov_len = datasize; | |
2092 | } | |
2093 | msg.msg_iov = iov; | |
2094 | msg.msg_iovlen = 1; | |
2095 | msg.msg_name = NULL; | |
2096 | msg.msg_namelen = 0; | |
2097 | msg.msg_flags = 0; | |
2098 | msg.msg_control = NULL; | |
2099 | msg.msg_controllen = 0; | |
2100 | ||
2101 | if(count > 0) | |
2102 | { | |
2103 | int i; | |
2104 | int len = CMSG_SPACE(sizeof(int) * count); | |
2105 | buf = alloca(len); | |
2106 | ||
2107 | msg.msg_control = buf; | |
2108 | msg.msg_controllen = len; | |
2109 | cmsg = CMSG_FIRSTHDR(&msg); | |
2110 | cmsg->cmsg_level = SOL_SOCKET; | |
2111 | cmsg->cmsg_type = SCM_RIGHTS; | |
2112 | cmsg->cmsg_len = CMSG_LEN(sizeof(int) * count); | |
2113 | ||
2114 | for(i = 0; i < count; i++) | |
2115 | { | |
2116 | ((int *)CMSG_DATA(cmsg))[i] = rb_get_fd(F[i]); | |
2117 | } | |
2118 | msg.msg_controllen = cmsg->cmsg_len; | |
2119 | } | |
2120 | n = sendmsg(rb_get_fd(xF), &msg, MSG_NOSIGNAL); | |
2121 | return n; | |
2122 | } | |
2123 |