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b57f37fb WP |
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 | * | |
b57f37fb WP |
24 | */ |
25 | #include <libratbox_config.h> | |
26 | #include <ratbox_lib.h> | |
27 | #include <commio-int.h> | |
28 | #include <commio-ssl.h> | |
29 | #include <event-int.h> | |
30 | #ifdef HAVE_SYS_UIO_H | |
31 | #include <sys/uio.h> | |
32 | #endif | |
33 | #define HAVE_SSL 1 | |
34 | ||
35 | #ifndef MSG_NOSIGNAL | |
36 | #define MSG_NOSIGNAL 0 | |
37 | #endif | |
38 | ||
39 | ||
40 | struct timeout_data | |
41 | { | |
42 | rb_fde_t *F; | |
43 | rb_dlink_node node; | |
44 | time_t timeout; | |
45 | PF *timeout_handler; | |
46 | void *timeout_data; | |
47 | }; | |
48 | ||
49 | rb_dlink_list *rb_fd_table; | |
50 | static rb_bh *fd_heap; | |
51 | ||
52 | static rb_dlink_list timeout_list; | |
53 | static rb_dlink_list closed_list; | |
54 | ||
55 | static struct ev_entry *rb_timeout_ev; | |
56 | ||
57 | ||
58 | static const char *rb_err_str[] = { "Comm OK", "Error during bind()", | |
59 | "Error during DNS lookup", "connect timeout", | |
60 | "Error during connect()", | |
61 | "Comm Error" | |
62 | }; | |
63 | ||
64 | /* Highest FD and number of open FDs .. */ | |
65 | static int number_fd = 0; | |
94b4fbf9 | 66 | int rb_maxconnections = 0; |
b57f37fb WP |
67 | |
68 | static PF rb_connect_timeout; | |
69 | static PF rb_connect_tryconnect; | |
70 | #ifdef RB_IPV6 | |
71 | static void mangle_mapped_sockaddr(struct sockaddr *in); | |
72 | #endif | |
73 | ||
74 | #ifndef HAVE_SOCKETPAIR | |
75 | static int rb_inet_socketpair(int d, int type, int protocol, int sv[2]); | |
94b4fbf9 | 76 | static int rb_inet_socketpair_udp(rb_fde_t **newF1, rb_fde_t **newF2); |
b57f37fb WP |
77 | #endif |
78 | ||
79 | static inline rb_fde_t * | |
80 | add_fd(int fd) | |
81 | { | |
82 | rb_fde_t *F = rb_find_fd(fd); | |
b57f37fb WP |
83 | |
84 | /* look up to see if we have it already */ | |
85 | if(F != NULL) | |
94b4fbf9 VY |
86 | return F; |
87 | ||
b57f37fb WP |
88 | F = rb_bh_alloc(fd_heap); |
89 | F->fd = fd; | |
4414eb3c | 90 | rb_dlinkAdd(F, &F->node, &rb_fd_table[rb_hash_fd(fd)]); |
94b4fbf9 | 91 | return (F); |
b57f37fb WP |
92 | } |
93 | ||
94 | static inline void | |
95 | remove_fd(rb_fde_t *F) | |
96 | { | |
b57f37fb WP |
97 | if(F == NULL || !IsFDOpen(F)) |
98 | return; | |
94b4fbf9 | 99 | |
4414eb3c | 100 | rb_dlinkMoveNode(&F->node, &rb_fd_table[rb_hash_fd(F->fd)], &closed_list); |
b57f37fb WP |
101 | } |
102 | ||
94b4fbf9 | 103 | static void |
b57f37fb WP |
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 | { | |
94b4fbf9 | 145 | #ifndef _WIN32 |
b57f37fb | 146 | int i; |
b57f37fb WP |
147 | |
148 | /* XXX someone tell me why we care about 4 fd's ? */ | |
149 | /* XXX btw, fd 3 is used for profiler ! */ | |
94b4fbf9 | 150 | for(i = 3; i < rb_maxconnections; ++i) |
b57f37fb WP |
151 | { |
152 | close(i); | |
153 | } | |
b57f37fb WP |
154 | #endif |
155 | } | |
156 | ||
157 | /* | |
158 | * get_sockerr - get the error value from the socket or the current errno | |
159 | * | |
160 | * Get the *real* error from the socket (well try to anyway..). | |
161 | * This may only work when SO_DEBUG is enabled but its worth the | |
162 | * gamble anyway. | |
163 | */ | |
164 | int | |
165 | rb_get_sockerr(rb_fde_t *F) | |
166 | { | |
167 | int errtmp; | |
168 | int err = 0; | |
169 | rb_socklen_t len = sizeof(err); | |
170 | ||
171 | if(!(F->type & RB_FD_SOCKET)) | |
172 | return errno; | |
173 | ||
174 | rb_get_errno(); | |
175 | errtmp = errno; | |
176 | ||
177 | #ifdef SO_ERROR | |
94b4fbf9 VY |
178 | if(F != NULL |
179 | && !getsockopt(rb_get_fd(F), SOL_SOCKET, SO_ERROR, (char *)&err, (rb_socklen_t *) & len)) | |
b57f37fb WP |
180 | { |
181 | if(err) | |
182 | errtmp = err; | |
183 | } | |
184 | errno = errtmp; | |
185 | #endif | |
186 | return errtmp; | |
187 | } | |
188 | ||
189 | /* | |
190 | * rb_getmaxconnect - return the max number of connections allowed | |
191 | */ | |
192 | int | |
193 | rb_getmaxconnect(void) | |
194 | { | |
94b4fbf9 | 195 | return (rb_maxconnections); |
b57f37fb WP |
196 | } |
197 | ||
198 | /* | |
199 | * set_sock_buffers - set send and receive buffers for socket | |
200 | * | |
201 | * inputs - fd file descriptor | |
202 | * - size to set | |
203 | * output - returns true (1) if successful, false (0) otherwise | |
204 | * side effects - | |
205 | */ | |
206 | int | |
207 | rb_set_buffers(rb_fde_t *F, int size) | |
208 | { | |
209 | if(F == NULL) | |
210 | return 0; | |
211 | if(setsockopt | |
94b4fbf9 VY |
212 | (F->fd, SOL_SOCKET, SO_RCVBUF, (char *)&size, sizeof(size)) |
213 | || setsockopt(F->fd, SOL_SOCKET, SO_SNDBUF, (char *)&size, sizeof(size))) | |
b57f37fb WP |
214 | return 0; |
215 | return 1; | |
216 | } | |
217 | ||
218 | /* | |
219 | * set_non_blocking - Set the client connection into non-blocking mode. | |
220 | * | |
221 | * inputs - fd to set into non blocking mode | |
222 | * output - 1 if successful 0 if not | |
223 | * side effects - use POSIX compliant non blocking and | |
224 | * be done with it. | |
225 | */ | |
226 | int | |
227 | rb_set_nb(rb_fde_t *F) | |
228 | { | |
229 | int nonb = 0; | |
230 | int res; | |
231 | int fd; | |
232 | if(F == NULL) | |
233 | return 0; | |
234 | fd = F->fd; | |
94b4fbf9 | 235 | |
b57f37fb WP |
236 | if((res = rb_setup_fd(F))) |
237 | return res; | |
238 | #ifdef O_NONBLOCK | |
239 | nonb |= O_NONBLOCK; | |
240 | res = fcntl(fd, F_GETFL, 0); | |
241 | if(-1 == res || fcntl(fd, F_SETFL, res | nonb) == -1) | |
242 | return 0; | |
243 | #else | |
244 | nonb = 1; | |
245 | res = 0; | |
246 | if(ioctl(fd, FIONBIO, (char *)&nonb) == -1) | |
247 | return 0; | |
248 | #endif | |
249 | ||
250 | return 1; | |
251 | } | |
252 | ||
253 | /* | |
254 | * rb_settimeout() - set the socket timeout | |
255 | * | |
256 | * Set the timeout for the fd | |
257 | */ | |
258 | void | |
259 | rb_settimeout(rb_fde_t *F, time_t timeout, PF * callback, void *cbdata) | |
260 | { | |
261 | struct timeout_data *td; | |
262 | ||
263 | if(F == NULL) | |
264 | return; | |
265 | ||
266 | lrb_assert(IsFDOpen(F)); | |
267 | td = F->timeout; | |
94b4fbf9 | 268 | if(callback == NULL) /* user wants to remove */ |
b57f37fb WP |
269 | { |
270 | if(td == NULL) | |
271 | return; | |
272 | rb_dlinkDelete(&td->node, &timeout_list); | |
273 | rb_free(td); | |
274 | F->timeout = NULL; | |
94b4fbf9 | 275 | if(rb_dlink_list_length(&timeout_list) == 0) |
b57f37fb WP |
276 | { |
277 | rb_event_delete(rb_timeout_ev); | |
278 | rb_timeout_ev = NULL; | |
279 | } | |
280 | return; | |
281 | } | |
282 | ||
283 | if(F->timeout == NULL) | |
94b4fbf9 VY |
284 | td = F->timeout = rb_malloc(sizeof(struct timeout_data)); |
285 | ||
b57f37fb WP |
286 | td->F = F; |
287 | td->timeout = rb_current_time() + timeout; | |
288 | td->timeout_handler = callback; | |
289 | td->timeout_data = cbdata; | |
290 | rb_dlinkAdd(td, &td->node, &timeout_list); | |
291 | if(rb_timeout_ev == NULL) | |
292 | { | |
94b4fbf9 | 293 | rb_timeout_ev = rb_event_add("rb_checktimeouts", rb_checktimeouts, NULL, 5); |
b57f37fb WP |
294 | } |
295 | } | |
296 | ||
297 | /* | |
298 | * rb_checktimeouts() - check the socket timeouts | |
299 | * | |
300 | * All this routine does is call the given callback/cbdata, without closing | |
301 | * down the file descriptor. When close handlers have been implemented, | |
302 | * this will happen. | |
303 | */ | |
304 | void | |
305 | rb_checktimeouts(void *notused) | |
306 | { | |
307 | rb_dlink_node *ptr, *next; | |
308 | struct timeout_data *td; | |
309 | rb_fde_t *F; | |
310 | PF *hdl; | |
311 | void *data; | |
312 | ||
313 | RB_DLINK_FOREACH_SAFE(ptr, next, timeout_list.head) | |
314 | { | |
315 | td = ptr->data; | |
316 | F = td->F; | |
317 | if(F == NULL || !IsFDOpen(F)) | |
318 | continue; | |
319 | ||
320 | if(td->timeout < rb_current_time()) | |
321 | { | |
322 | hdl = td->timeout_handler; | |
323 | data = td->timeout_data; | |
324 | rb_dlinkDelete(&td->node, &timeout_list); | |
325 | F->timeout = NULL; | |
326 | rb_free(td); | |
327 | hdl(F, data); | |
94b4fbf9 | 328 | } |
b57f37fb WP |
329 | } |
330 | } | |
331 | ||
332 | static void | |
333 | rb_accept_tryaccept(rb_fde_t *F, void *data) | |
334 | { | |
335 | struct rb_sockaddr_storage st; | |
336 | rb_fde_t *new_F; | |
337 | rb_socklen_t addrlen = sizeof(st); | |
338 | int new_fd; | |
339 | ||
340 | while(1) | |
341 | { | |
342 | new_fd = accept(F->fd, (struct sockaddr *)&st, &addrlen); | |
343 | rb_get_errno(); | |
344 | if(new_fd < 0) | |
345 | { | |
346 | rb_setselect(F, RB_SELECT_ACCEPT, rb_accept_tryaccept, NULL); | |
347 | return; | |
348 | } | |
349 | ||
350 | rb_fd_hack(&new_fd); | |
351 | ||
352 | new_F = rb_open(new_fd, RB_FD_SOCKET, "Incoming Connection"); | |
353 | ||
4414eb3c VY |
354 | if(new_F == NULL) |
355 | { | |
94b4fbf9 VY |
356 | rb_lib_log |
357 | ("rb_accept: new_F == NULL on incoming connection. Closing new_fd == %d\n", | |
358 | new_fd); | |
4414eb3c VY |
359 | close(new_fd); |
360 | continue; | |
361 | } | |
362 | ||
033be687 | 363 | if(rb_unlikely(!rb_set_nb(new_F))) |
b57f37fb WP |
364 | { |
365 | rb_get_errno(); | |
366 | rb_lib_log("rb_accept: Couldn't set FD %d non blocking!", new_F->fd); | |
367 | rb_close(new_F); | |
368 | } | |
369 | ||
370 | #ifdef RB_IPV6 | |
371 | mangle_mapped_sockaddr((struct sockaddr *)&st); | |
372 | #endif | |
94b4fbf9 | 373 | |
b57f37fb WP |
374 | if(F->accept->precb != NULL) |
375 | { | |
94b4fbf9 | 376 | if(!F->accept->precb(new_F, (struct sockaddr *)&st, addrlen, F->accept->data)) /* pre-callback decided to drop it */ |
b57f37fb WP |
377 | continue; |
378 | } | |
379 | #ifdef HAVE_SSL | |
380 | if(F->type & RB_FD_SSL) | |
381 | { | |
4414eb3c | 382 | rb_ssl_accept_setup(F, new_F, (struct sockaddr *)&st, addrlen); |
94b4fbf9 | 383 | } |
b57f37fb | 384 | else |
94b4fbf9 | 385 | #endif /* HAVE_SSL */ |
b57f37fb | 386 | { |
94b4fbf9 VY |
387 | F->accept->callback(new_F, RB_OK, (struct sockaddr *)&st, addrlen, |
388 | F->accept->data); | |
b57f37fb WP |
389 | } |
390 | } | |
391 | ||
392 | } | |
393 | ||
394 | /* try to accept a TCP connection */ | |
395 | void | |
94b4fbf9 | 396 | rb_accept_tcp(rb_fde_t *F, ACPRE * precb, ACCB * callback, void *data) |
b57f37fb WP |
397 | { |
398 | if(F == NULL) | |
399 | return; | |
400 | lrb_assert(callback); | |
401 | ||
402 | F->accept = rb_malloc(sizeof(struct acceptdata)); | |
403 | F->accept->callback = callback; | |
404 | F->accept->data = data; | |
405 | F->accept->precb = precb; | |
406 | rb_accept_tryaccept(F, NULL); | |
407 | } | |
408 | ||
409 | /* | |
410 | * void rb_connect_tcp(int fd, struct sockaddr *dest, | |
411 | * struct sockaddr *clocal, int socklen, | |
412 | * CNCB *callback, void *data, int timeout) | |
413 | * Input: An fd to connect with, a host and port to connect to, | |
414 | * a local sockaddr to connect from + length(or NULL to use the | |
415 | * default), a callback, the data to pass into the callback, the | |
416 | * address family. | |
417 | * Output: None. | |
418 | * Side-effects: A non-blocking connection to the host is started, and | |
419 | * if necessary, set up for selection. The callback given | |
420 | * may be called now, or it may be called later. | |
421 | */ | |
422 | void | |
423 | rb_connect_tcp(rb_fde_t *F, struct sockaddr *dest, | |
94b4fbf9 | 424 | struct sockaddr *clocal, int socklen, CNCB * callback, void *data, int timeout) |
b57f37fb WP |
425 | { |
426 | if(F == NULL) | |
427 | return; | |
94b4fbf9 | 428 | |
b57f37fb WP |
429 | lrb_assert(callback); |
430 | F->connect = rb_malloc(sizeof(struct conndata)); | |
431 | F->connect->callback = callback; | |
432 | F->connect->data = data; | |
433 | ||
434 | memcpy(&F->connect->hostaddr, dest, sizeof(F->connect->hostaddr)); | |
435 | ||
436 | /* Note that we're using a passed sockaddr here. This is because | |
437 | * generally you'll be bind()ing to a sockaddr grabbed from | |
438 | * getsockname(), so this makes things easier. | |
439 | * XXX If NULL is passed as local, we should later on bind() to the | |
440 | * virtual host IP, for completeness. | |
441 | * -- adrian | |
442 | */ | |
443 | if((clocal != NULL) && (bind(F->fd, clocal, socklen) < 0)) | |
444 | { | |
445 | /* Failure, call the callback with RB_ERR_BIND */ | |
446 | rb_connect_callback(F, RB_ERR_BIND); | |
447 | /* ... and quit */ | |
448 | return; | |
449 | } | |
450 | ||
451 | /* We have a valid IP, so we just call tryconnect */ | |
452 | /* Make sure we actually set the timeout here .. */ | |
453 | rb_settimeout(F, timeout, rb_connect_timeout, NULL); | |
454 | rb_connect_tryconnect(F, NULL); | |
455 | } | |
456 | ||
457 | ||
458 | /* | |
459 | * rb_connect_callback() - call the callback, and continue with life | |
460 | */ | |
461 | void | |
462 | rb_connect_callback(rb_fde_t *F, int status) | |
463 | { | |
464 | CNCB *hdl; | |
465 | void *data; | |
94b4fbf9 | 466 | int errtmp = errno; /* save errno as rb_settimeout clobbers it sometimes */ |
b57f37fb WP |
467 | |
468 | /* This check is gross..but probably necessary */ | |
469 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
470 | return; | |
471 | /* Clear the connect flag + handler */ | |
472 | hdl = F->connect->callback; | |
473 | data = F->connect->data; | |
474 | F->connect->callback = NULL; | |
475 | ||
9b4f3c47 | 476 | |
b57f37fb WP |
477 | /* Clear the timeout handler */ |
478 | rb_settimeout(F, 0, NULL, NULL); | |
94b4fbf9 | 479 | errno = errtmp; |
b57f37fb WP |
480 | /* Call the handler */ |
481 | hdl(F, status, data); | |
482 | } | |
483 | ||
484 | ||
485 | /* | |
486 | * rb_connect_timeout() - this gets called when the socket connection | |
487 | * times out. This *only* can be called once connect() is initially | |
488 | * called .. | |
489 | */ | |
490 | static void | |
491 | rb_connect_timeout(rb_fde_t *F, void *notused) | |
492 | { | |
493 | /* error! */ | |
494 | rb_connect_callback(F, RB_ERR_TIMEOUT); | |
495 | } | |
496 | ||
497 | /* static void rb_connect_tryconnect(int fd, void *notused) | |
498 | * Input: The fd, the handler data(unused). | |
499 | * Output: None. | |
500 | * Side-effects: Try and connect with pending connect data for the FD. If | |
501 | * we succeed or get a fatal error, call the callback. | |
502 | * Otherwise, it is still blocking or something, so register | |
503 | * to select for a write event on this FD. | |
504 | */ | |
505 | static void | |
506 | rb_connect_tryconnect(rb_fde_t *F, void *notused) | |
507 | { | |
508 | int retval; | |
509 | ||
510 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
511 | return; | |
512 | /* Try the connect() */ | |
513 | retval = connect(F->fd, | |
94b4fbf9 VY |
514 | (struct sockaddr *)&F->connect->hostaddr, |
515 | GET_SS_LEN(&F->connect->hostaddr)); | |
b57f37fb WP |
516 | /* Error? */ |
517 | if(retval < 0) | |
518 | { | |
519 | /* | |
520 | * If we get EISCONN, then we've already connect()ed the socket, | |
521 | * which is a good thing. | |
522 | * -- adrian | |
523 | */ | |
524 | rb_get_errno(); | |
525 | if(errno == EISCONN) | |
526 | rb_connect_callback(F, RB_OK); | |
527 | else if(rb_ignore_errno(errno)) | |
528 | /* Ignore error? Reschedule */ | |
94b4fbf9 | 529 | rb_setselect(F, RB_SELECT_CONNECT, rb_connect_tryconnect, NULL); |
b57f37fb WP |
530 | else |
531 | /* Error? Fail with RB_ERR_CONNECT */ | |
532 | rb_connect_callback(F, RB_ERR_CONNECT); | |
533 | return; | |
534 | } | |
535 | /* If we get here, we've suceeded, so call with RB_OK */ | |
536 | rb_connect_callback(F, RB_OK); | |
537 | } | |
538 | ||
539 | ||
540 | int | |
541 | rb_connect_sockaddr(rb_fde_t *F, struct sockaddr *addr, int len) | |
542 | { | |
543 | if(F == NULL) | |
544 | return 0; | |
545 | ||
546 | memcpy(addr, &F->connect->hostaddr, len); | |
547 | return 1; | |
548 | } | |
549 | ||
550 | /* | |
551 | * rb_error_str() - return an error string for the given error condition | |
552 | */ | |
553 | const char * | |
554 | rb_errstr(int error) | |
555 | { | |
556 | if(error < 0 || error >= RB_ERR_MAX) | |
557 | return "Invalid error number!"; | |
558 | return rb_err_str[error]; | |
559 | } | |
560 | ||
561 | ||
562 | int | |
563 | rb_socketpair(int family, int sock_type, int proto, rb_fde_t **F1, rb_fde_t **F2, const char *note) | |
564 | { | |
565 | int nfd[2]; | |
566 | if(number_fd >= rb_maxconnections) | |
567 | { | |
568 | errno = ENFILE; | |
569 | return -1; | |
570 | } | |
571 | ||
94b4fbf9 | 572 | #ifdef HAVE_SOCKETPAIR |
b57f37fb WP |
573 | if(socketpair(family, sock_type, proto, nfd)) |
574 | #else | |
94b4fbf9 VY |
575 | if(sock_type == SOCK_DGRAM) |
576 | { | |
577 | return rb_inet_socketpair_udp(F1, F2); | |
578 | } | |
579 | ||
580 | if(rb_inet_socketpair(AF_INET, sock_type, proto, nfd)) | |
b57f37fb WP |
581 | #endif |
582 | return -1; | |
583 | ||
584 | rb_fd_hack(&nfd[0]); | |
585 | rb_fd_hack(&nfd[1]); | |
586 | ||
587 | *F1 = rb_open(nfd[0], RB_FD_SOCKET, note); | |
588 | *F2 = rb_open(nfd[1], RB_FD_SOCKET, note); | |
589 | ||
590 | if(*F1 == NULL) | |
591 | { | |
592 | if(*F2 != NULL) | |
593 | rb_close(*F2); | |
594 | return -1; | |
595 | } | |
596 | ||
597 | if(*F2 == NULL) | |
598 | { | |
599 | rb_close(*F1); | |
600 | return -1; | |
601 | } | |
602 | ||
603 | /* Set the socket non-blocking, and other wonderful bits */ | |
033be687 | 604 | if(rb_unlikely(!rb_set_nb(*F1))) |
b57f37fb WP |
605 | { |
606 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[0], strerror(errno)); | |
607 | rb_close(*F1); | |
608 | rb_close(*F2); | |
609 | return -1; | |
610 | } | |
611 | ||
033be687 | 612 | if(rb_unlikely(!rb_set_nb(*F2))) |
b57f37fb WP |
613 | { |
614 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[1], strerror(errno)); | |
615 | rb_close(*F1); | |
616 | rb_close(*F2); | |
617 | return -1; | |
618 | } | |
619 | ||
620 | return 0; | |
621 | } | |
622 | ||
623 | ||
624 | int | |
625 | rb_pipe(rb_fde_t **F1, rb_fde_t **F2, const char *desc) | |
626 | { | |
94b4fbf9 | 627 | #ifndef _WIN32 |
b57f37fb WP |
628 | int fd[2]; |
629 | if(number_fd >= rb_maxconnections) | |
630 | { | |
631 | errno = ENFILE; | |
632 | return -1; | |
633 | } | |
634 | if(pipe(fd) == -1) | |
635 | return -1; | |
636 | rb_fd_hack(&fd[0]); | |
637 | rb_fd_hack(&fd[1]); | |
638 | *F1 = rb_open(fd[0], RB_FD_PIPE, desc); | |
639 | *F2 = rb_open(fd[1], RB_FD_PIPE, desc); | |
640 | ||
033be687 | 641 | if(rb_unlikely(!rb_set_nb(*F1))) |
b57f37fb WP |
642 | { |
643 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[0], strerror(errno)); | |
644 | rb_close(*F1); | |
645 | rb_close(*F2); | |
646 | return -1; | |
647 | } | |
648 | ||
033be687 | 649 | if(rb_unlikely(!rb_set_nb(*F2))) |
b57f37fb WP |
650 | { |
651 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[1], strerror(errno)); | |
652 | rb_close(*F1); | |
653 | rb_close(*F2); | |
654 | return -1; | |
655 | } | |
656 | ||
657 | ||
658 | return 0; | |
659 | #else | |
660 | /* Its not a pipe..but its selectable. I'll take dirty hacks | |
661 | * for $500 Alex. | |
662 | */ | |
94b4fbf9 | 663 | return rb_socketpair(AF_INET, SOCK_STREAM, 0, F1, F2, desc); |
b57f37fb WP |
664 | #endif |
665 | } | |
666 | ||
667 | /* | |
668 | * rb_socket() - open a socket | |
669 | * | |
670 | * This is a highly highly cut down version of squid's rb_open() which | |
671 | * for the most part emulates socket(), *EXCEPT* it fails if we're about | |
672 | * to run out of file descriptors. | |
673 | */ | |
674 | rb_fde_t * | |
675 | rb_socket(int family, int sock_type, int proto, const char *note) | |
676 | { | |
677 | rb_fde_t *F; | |
678 | int fd; | |
679 | /* First, make sure we aren't going to run out of file descriptors */ | |
033be687 | 680 | if(rb_unlikely(number_fd >= rb_maxconnections)) |
b57f37fb WP |
681 | { |
682 | errno = ENFILE; | |
683 | return NULL; | |
684 | } | |
685 | ||
686 | /* | |
687 | * Next, we try to open the socket. We *should* drop the reserved FD | |
688 | * limit if/when we get an error, but we can deal with that later. | |
689 | * XXX !!! -- adrian | |
690 | */ | |
691 | fd = socket(family, sock_type, proto); | |
692 | rb_fd_hack(&fd); | |
033be687 | 693 | if(rb_unlikely(fd < 0)) |
b57f37fb WP |
694 | return NULL; /* errno will be passed through, yay.. */ |
695 | ||
696 | #if defined(RB_IPV6) && defined(IPV6_V6ONLY) | |
697 | /* | |
698 | * Make sure we can take both IPv4 and IPv6 connections | |
699 | * on an AF_INET6 socket | |
700 | */ | |
701 | if(family == AF_INET6) | |
702 | { | |
703 | int off = 1; | |
704 | if(setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, &off, sizeof(off)) == -1) | |
705 | { | |
706 | rb_lib_log("rb_socket: Could not set IPV6_V6ONLY option to 1 on FD %d: %s", | |
94b4fbf9 | 707 | fd, strerror(errno)); |
b57f37fb WP |
708 | close(fd); |
709 | return NULL; | |
710 | } | |
711 | } | |
712 | #endif | |
713 | ||
714 | F = rb_open(fd, RB_FD_SOCKET, note); | |
715 | if(F == NULL) | |
4414eb3c | 716 | { |
94b4fbf9 VY |
717 | rb_lib_log("rb_socket: rb_open returns NULL on FD %d: %s, closing fd", fd, |
718 | strerror(errno)); | |
4414eb3c | 719 | close(fd); |
b57f37fb | 720 | return NULL; |
4414eb3c | 721 | } |
b57f37fb | 722 | /* Set the socket non-blocking, and other wonderful bits */ |
033be687 | 723 | if(rb_unlikely(!rb_set_nb(F))) |
b57f37fb WP |
724 | { |
725 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd, strerror(errno)); | |
726 | rb_close(F); | |
727 | return NULL; | |
728 | } | |
729 | ||
730 | return F; | |
731 | } | |
732 | ||
733 | /* | |
734 | * If a sockaddr_storage is AF_INET6 but is a mapped IPv4 | |
735 | * socket manged the sockaddr. | |
736 | */ | |
737 | #ifdef RB_IPV6 | |
738 | static void | |
739 | mangle_mapped_sockaddr(struct sockaddr *in) | |
740 | { | |
94b4fbf9 | 741 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)in; |
b57f37fb WP |
742 | |
743 | if(in->sa_family == AF_INET) | |
744 | return; | |
745 | ||
746 | if(in->sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&in6->sin6_addr)) | |
747 | { | |
748 | struct sockaddr_in in4; | |
749 | memset(&in4, 0, sizeof(struct sockaddr_in)); | |
750 | in4.sin_family = AF_INET; | |
751 | in4.sin_port = in6->sin6_port; | |
94b4fbf9 | 752 | in4.sin_addr.s_addr = ((uint32_t *)&in6->sin6_addr)[3]; |
b57f37fb WP |
753 | memcpy(in, &in4, sizeof(struct sockaddr_in)); |
754 | } | |
755 | return; | |
756 | } | |
757 | #endif | |
758 | ||
759 | /* | |
760 | * rb_listen() - listen on a port | |
761 | */ | |
762 | int | |
763 | rb_listen(rb_fde_t *F, int backlog) | |
764 | { | |
94b4fbf9 | 765 | F->type = RB_FD_SOCKET | RB_FD_LISTEN; |
b57f37fb WP |
766 | /* Currently just a simple wrapper for the sake of being complete */ |
767 | return listen(F->fd, backlog); | |
768 | } | |
769 | ||
770 | void | |
771 | rb_fdlist_init(int closeall, int maxfds, size_t heapsize) | |
772 | { | |
773 | static int initialized = 0; | |
94b4fbf9 | 774 | #ifdef _WIN32 |
b57f37fb WP |
775 | WSADATA wsaData; |
776 | int err; | |
777 | int vers = MAKEWORD(2, 0); | |
94b4fbf9 | 778 | |
b57f37fb WP |
779 | err = WSAStartup(vers, &wsaData); |
780 | if(err != 0) | |
781 | { | |
782 | rb_lib_die("WSAStartup failed"); | |
783 | } | |
784 | ||
785 | #endif | |
786 | if(!initialized) | |
787 | { | |
788 | rb_maxconnections = maxfds; | |
789 | if(closeall) | |
790 | rb_close_all(); | |
791 | /* Since we're doing this once .. */ | |
792 | initialized = 1; | |
793 | } | |
794 | fd_heap = rb_bh_create(sizeof(rb_fde_t), heapsize, "librb_fd_heap"); | |
795 | ||
796 | } | |
797 | ||
798 | ||
799 | /* Called to open a given filedescriptor */ | |
800 | rb_fde_t * | |
4414eb3c | 801 | rb_open(int fd, uint8_t type, const char *desc) |
b57f37fb | 802 | { |
4414eb3c | 803 | rb_fde_t *F; |
b57f37fb WP |
804 | lrb_assert(fd >= 0); |
805 | ||
4414eb3c VY |
806 | F = add_fd(fd); |
807 | ||
808 | lrb_assert(!IsFDOpen(F)); | |
033be687 | 809 | if(rb_unlikely(IsFDOpen(F))) |
b57f37fb | 810 | { |
4414eb3c VY |
811 | const char *fdesc; |
812 | if(F != NULL && F->desc != NULL) | |
813 | fdesc = F->desc; | |
814 | else | |
815 | fdesc = "NULL"; | |
94b4fbf9 | 816 | rb_lib_log("Trying to rb_open an already open FD: %d desc: %s", fd, fdesc); |
b57f37fb WP |
817 | return NULL; |
818 | } | |
b57f37fb WP |
819 | F->fd = fd; |
820 | F->type = type; | |
821 | SetFDOpen(F); | |
822 | ||
823 | if(desc != NULL) | |
824 | F->desc = rb_strndup(desc, FD_DESC_SZ); | |
825 | number_fd++; | |
826 | return F; | |
827 | } | |
828 | ||
829 | ||
830 | /* Called to close a given filedescriptor */ | |
831 | void | |
832 | rb_close(rb_fde_t *F) | |
833 | { | |
834 | int type, fd; | |
94b4fbf9 | 835 | |
b57f37fb WP |
836 | if(F == NULL) |
837 | return; | |
838 | ||
839 | fd = F->fd; | |
94b4fbf9 | 840 | type = F->type; |
b57f37fb WP |
841 | lrb_assert(IsFDOpen(F)); |
842 | ||
843 | lrb_assert(!(type & RB_FD_FILE)); | |
033be687 | 844 | if(rb_unlikely(type & RB_FD_FILE)) |
b57f37fb WP |
845 | { |
846 | lrb_assert(F->read_handler == NULL); | |
847 | lrb_assert(F->write_handler == NULL); | |
848 | } | |
849 | rb_setselect(F, RB_SELECT_WRITE | RB_SELECT_READ, NULL, NULL); | |
850 | rb_settimeout(F, 0, NULL, NULL); | |
851 | rb_free(F->accept); | |
852 | rb_free(F->connect); | |
853 | rb_free(F->desc); | |
854 | #ifdef HAVE_SSL | |
855 | if(type & RB_FD_SSL) | |
856 | { | |
857 | rb_ssl_shutdown(F); | |
858 | } | |
859 | #endif /* HAVE_SSL */ | |
860 | if(IsFDOpen(F)) | |
861 | { | |
862 | remove_fd(F); | |
863 | ClearFDOpen(F); | |
864 | } | |
865 | ||
866 | number_fd--; | |
867 | ||
94b4fbf9 VY |
868 | #ifdef _WIN32 |
869 | if(type & (RB_FD_SOCKET | RB_FD_PIPE)) | |
b57f37fb WP |
870 | { |
871 | closesocket(fd); | |
872 | return; | |
94b4fbf9 VY |
873 | } |
874 | else | |
b57f37fb | 875 | #endif |
94b4fbf9 | 876 | close(fd); |
b57f37fb WP |
877 | } |
878 | ||
879 | ||
880 | /* | |
881 | * rb_dump_fd() - dump the list of active filedescriptors | |
882 | */ | |
883 | void | |
884 | rb_dump_fd(DUMPCB * cb, void *data) | |
885 | { | |
886 | static const char *empty = ""; | |
887 | rb_dlink_node *ptr; | |
888 | rb_dlink_list *bucket; | |
889 | rb_fde_t *F; | |
890 | unsigned int i; | |
891 | ||
892 | for(i = 0; i < RB_FD_HASH_SIZE; i++) | |
893 | { | |
894 | bucket = &rb_fd_table[i]; | |
895 | ||
896 | if(rb_dlink_list_length(bucket) <= 0) | |
897 | continue; | |
898 | ||
899 | RB_DLINK_FOREACH(ptr, bucket->head) | |
900 | { | |
901 | F = ptr->data; | |
902 | if(F == NULL || !IsFDOpen(F)) | |
903 | continue; | |
904 | ||
905 | cb(F->fd, F->desc ? F->desc : empty, data); | |
906 | } | |
907 | } | |
908 | } | |
909 | ||
910 | /* | |
911 | * rb_note() - set the fd note | |
912 | * | |
913 | * Note: must be careful not to overflow rb_fd_table[fd].desc when | |
914 | * calling. | |
915 | */ | |
916 | void | |
917 | rb_note(rb_fde_t *F, const char *string) | |
918 | { | |
919 | if(F == NULL) | |
920 | return; | |
921 | ||
922 | rb_free(F->desc); | |
923 | F->desc = rb_strndup(string, FD_DESC_SZ); | |
924 | } | |
925 | ||
926 | void | |
4414eb3c | 927 | rb_set_type(rb_fde_t *F, uint8_t type) |
b57f37fb WP |
928 | { |
929 | /* if the caller is calling this, lets assume they have a clue */ | |
930 | F->type = type; | |
931 | return; | |
932 | } | |
933 | ||
4414eb3c | 934 | uint8_t |
b57f37fb WP |
935 | rb_get_type(rb_fde_t *F) |
936 | { | |
937 | return F->type; | |
938 | } | |
939 | ||
94b4fbf9 | 940 | int |
b57f37fb WP |
941 | rb_fd_ssl(rb_fde_t *F) |
942 | { | |
943 | if(F == NULL) | |
944 | return 0; | |
945 | if(F->type & RB_FD_SSL) | |
946 | return 1; | |
947 | return 0; | |
948 | } | |
949 | ||
94b4fbf9 | 950 | int |
b57f37fb WP |
951 | rb_get_fd(rb_fde_t *F) |
952 | { | |
953 | if(F == NULL) | |
954 | return -1; | |
94b4fbf9 | 955 | return (F->fd); |
b57f37fb WP |
956 | } |
957 | ||
958 | rb_fde_t * | |
959 | rb_get_fde(int fd) | |
960 | { | |
961 | return rb_find_fd(fd); | |
962 | } | |
963 | ||
964 | ssize_t | |
965 | rb_read(rb_fde_t *F, void *buf, int count) | |
966 | { | |
ec9738cb | 967 | ssize_t ret; |
b57f37fb WP |
968 | if(F == NULL) |
969 | return 0; | |
94b4fbf9 | 970 | |
b57f37fb WP |
971 | /* This needs to be *before* RB_FD_SOCKET otherwise you'll process |
972 | * an SSL socket as a regular socket | |
973 | */ | |
974 | #ifdef HAVE_SSL | |
975 | if(F->type & RB_FD_SSL) | |
976 | { | |
977 | return rb_ssl_read(F, buf, count); | |
94b4fbf9 | 978 | } |
b57f37fb WP |
979 | #endif |
980 | if(F->type & RB_FD_SOCKET) | |
981 | { | |
982 | ret = recv(F->fd, buf, count, 0); | |
983 | if(ret < 0) | |
984 | { | |
985 | rb_get_errno(); | |
986 | } | |
987 | return ret; | |
988 | } | |
989 | ||
990 | ||
991 | /* default case */ | |
992 | return read(F->fd, buf, count); | |
993 | } | |
994 | ||
995 | ||
996 | ssize_t | |
997 | rb_write(rb_fde_t *F, const void *buf, int count) | |
998 | { | |
ec9738cb | 999 | ssize_t ret; |
b57f37fb WP |
1000 | if(F == NULL) |
1001 | return 0; | |
1002 | ||
1003 | #ifdef HAVE_SSL | |
1004 | if(F->type & RB_FD_SSL) | |
1005 | { | |
1006 | return rb_ssl_write(F, buf, count); | |
94b4fbf9 | 1007 | } |
b57f37fb WP |
1008 | #endif |
1009 | if(F->type & RB_FD_SOCKET) | |
1010 | { | |
1011 | ret = send(F->fd, buf, count, MSG_NOSIGNAL); | |
94b4fbf9 VY |
1012 | if(ret < 0) |
1013 | { | |
b57f37fb WP |
1014 | rb_get_errno(); |
1015 | } | |
1016 | return ret; | |
1017 | } | |
1018 | ||
1019 | return write(F->fd, buf, count); | |
1020 | } | |
1021 | ||
1022 | #if defined(HAVE_SSL) || defined(WIN32) || !defined(HAVE_WRITEV) | |
1023 | static ssize_t | |
1024 | rb_fake_writev(rb_fde_t *F, const struct rb_iovec *vp, size_t vpcount) | |
1025 | { | |
ec9738cb | 1026 | ssize_t count = 0; |
b57f37fb | 1027 | |
94b4fbf9 | 1028 | while(vpcount-- > 0) |
b57f37fb | 1029 | { |
ec9738cb | 1030 | ssize_t written = rb_write(F, vp->iov_base, vp->iov_len); |
b57f37fb | 1031 | |
94b4fbf9 | 1032 | if(written <= 0) |
b57f37fb WP |
1033 | { |
1034 | if(count > 0) | |
1035 | return count; | |
1036 | else | |
1037 | return written; | |
1038 | } | |
1039 | count += written; | |
1040 | vp++; | |
1041 | } | |
1042 | return (count); | |
1043 | } | |
1044 | #endif | |
1045 | ||
1046 | #if defined(WIN32) || !defined(HAVE_WRITEV) | |
1047 | ssize_t | |
94b4fbf9 | 1048 | rb_writev(rb_fde_t *F, struct rb_iovec * vecount, int count) |
b57f37fb WP |
1049 | { |
1050 | return rb_fake_writev(F, vecount, count); | |
1051 | } | |
1052 | ||
1053 | #else | |
1054 | ssize_t | |
94b4fbf9 | 1055 | rb_writev(rb_fde_t *F, struct rb_iovec * vector, int count) |
b57f37fb | 1056 | { |
94b4fbf9 VY |
1057 | if(F == NULL) |
1058 | { | |
b57f37fb WP |
1059 | errno = EBADF; |
1060 | return -1; | |
1061 | } | |
1062 | #ifdef HAVE_SSL | |
1063 | if(F->type & RB_FD_SSL) | |
1064 | { | |
94b4fbf9 | 1065 | return rb_fake_writev(F, vector, count); |
b57f37fb WP |
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); | |
94b4fbf9 | 1076 | } |
b57f37fb WP |
1077 | #endif /* HAVE_SENDMSG */ |
1078 | return writev(F->fd, (struct iovec *)vector, count); | |
1079 | ||
1080 | } | |
94b4fbf9 | 1081 | #endif |
b57f37fb WP |
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; | |
94b4fbf9 | 1132 | const unsigned char *a = (const unsigned char *)in; |
b57f37fb WP |
1133 | const char *n; |
1134 | ||
1135 | n = IpQuadTab[*a++]; | |
94b4fbf9 | 1136 | while(*n) |
b57f37fb WP |
1137 | *bufptr++ = *n++; |
1138 | *bufptr++ = '.'; | |
1139 | n = IpQuadTab[*a++]; | |
94b4fbf9 | 1140 | while(*n) |
b57f37fb WP |
1141 | *bufptr++ = *n++; |
1142 | *bufptr++ = '.'; | |
1143 | n = IpQuadTab[*a++]; | |
94b4fbf9 | 1144 | while(*n) |
b57f37fb WP |
1145 | *bufptr++ = *n++; |
1146 | *bufptr++ = '.'; | |
1147 | n = IpQuadTab[*a]; | |
94b4fbf9 | 1148 | while(*n) |
b57f37fb WP |
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 | ||
94b4fbf9 | 1179 | static const char *inet_ntop4(const unsigned char *src, char *dst, unsigned int size); |
b57f37fb | 1180 | #ifdef RB_IPV6 |
94b4fbf9 | 1181 | static const char *inet_ntop6(const unsigned char *src, char *dst, unsigned int size); |
b57f37fb WP |
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; | |
7123097b | 1200 | return strcpy(dst, inetntoa((const char *)src)); |
b57f37fb WP |
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); | |
94b4fbf9 | 1235 | for(i = 0; i < IN6ADDRSZ; i += 2) |
b57f37fb WP |
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; | |
94b4fbf9 | 1241 | for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) |
b57f37fb WP |
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; | |
94b4fbf9 | 1272 | for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) |
b57f37fb WP |
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 | ||
94b4fbf9 | 1308 | if((unsigned int)(tp - tmp) > size) |
b57f37fb WP |
1309 | { |
1310 | return (NULL); | |
1311 | } | |
7123097b | 1312 | return memcpy(dst, tmp, tp - tmp); |
b57f37fb WP |
1313 | } |
1314 | #endif | |
1315 | ||
1316 | int | |
1317 | rb_inet_pton_sock(const char *src, struct sockaddr *dst) | |
1318 | { | |
94b4fbf9 | 1319 | if(rb_inet_pton(AF_INET, src, &((struct sockaddr_in *)dst)->sin_addr)) |
b57f37fb | 1320 | { |
94b4fbf9 VY |
1321 | ((struct sockaddr_in *)dst)->sin_port = 0; |
1322 | ((struct sockaddr_in *)dst)->sin_family = AF_INET; | |
b57f37fb WP |
1323 | SET_SS_LEN(dst, sizeof(struct sockaddr_in)); |
1324 | return 1; | |
1325 | } | |
1326 | #ifdef RB_IPV6 | |
94b4fbf9 | 1327 | else if(rb_inet_pton(AF_INET6, src, &((struct sockaddr_in6 *)dst)->sin6_addr)) |
b57f37fb | 1328 | { |
94b4fbf9 VY |
1329 | ((struct sockaddr_in6 *)dst)->sin6_port = 0; |
1330 | ((struct sockaddr_in6 *)dst)->sin6_family = AF_INET6; | |
b57f37fb WP |
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: | |
94b4fbf9 | 1344 | return (rb_inet_ntop(AF_INET, &((struct sockaddr_in *)src)->sin_addr, dst, size)); |
b57f37fb WP |
1345 | break; |
1346 | #ifdef RB_IPV6 | |
1347 | case AF_INET6: | |
94b4fbf9 VY |
1348 | return (rb_inet_ntop |
1349 | (AF_INET6, &((struct sockaddr_in6 *)src)->sin6_addr, dst, size)); | |
b57f37fb WP |
1350 | break; |
1351 | #endif | |
1352 | default: | |
1353 | return NULL; | |
1354 | break; | |
1355 | } | |
1356 | } | |
1357 | ||
1358 | /* char * | |
1359 | * rb_inet_ntop(af, src, dst, size) | |
1360 | * convert a network format address to presentation format. | |
1361 | * return: | |
1362 | * pointer to presentation format address (`dst'), or NULL (see errno). | |
1363 | * author: | |
1364 | * Paul Vixie, 1996. | |
1365 | */ | |
1366 | const char * | |
1367 | rb_inet_ntop(int af, const void *src, char *dst, unsigned int size) | |
1368 | { | |
1369 | switch (af) | |
1370 | { | |
1371 | case AF_INET: | |
1372 | return (inet_ntop4(src, dst, size)); | |
1373 | #ifdef RB_IPV6 | |
1374 | case AF_INET6: | |
94b4fbf9 VY |
1375 | if(IN6_IS_ADDR_V4MAPPED((const struct in6_addr *)src) || |
1376 | IN6_IS_ADDR_V4COMPAT((const struct in6_addr *)src)) | |
b57f37fb | 1377 | return (inet_ntop4 |
94b4fbf9 VY |
1378 | ((const unsigned char *)&((const struct in6_addr *)src)-> |
1379 | s6_addr[12], dst, size)); | |
b57f37fb WP |
1380 | else |
1381 | return (inet_ntop6(src, dst, size)); | |
1382 | ||
1383 | ||
1384 | #endif | |
1385 | default: | |
1386 | return (NULL); | |
1387 | } | |
1388 | /* NOTREACHED */ | |
1389 | } | |
1390 | ||
1391 | /* | |
1392 | * WARNING: Don't even consider trying to compile this on a system where | |
1393 | * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. | |
1394 | */ | |
1395 | ||
1396 | /* int | |
1397 | * rb_inet_pton(af, src, dst) | |
1398 | * convert from presentation format (which usually means ASCII printable) | |
1399 | * to network format (which is usually some kind of binary format). | |
1400 | * return: | |
1401 | * 1 if the address was valid for the specified address family | |
1402 | * 0 if the address wasn't valid (`dst' is untouched in this case) | |
1403 | * -1 if some other error occurred (`dst' is untouched in this case, too) | |
1404 | * author: | |
1405 | * Paul Vixie, 1996. | |
1406 | */ | |
1407 | ||
1408 | /* int | |
1409 | * inet_pton4(src, dst) | |
1410 | * like inet_aton() but without all the hexadecimal and shorthand. | |
1411 | * return: | |
1412 | * 1 if `src' is a valid dotted quad, else 0. | |
1413 | * notice: | |
1414 | * does not touch `dst' unless it's returning 1. | |
1415 | * author: | |
1416 | * Paul Vixie, 1996. | |
1417 | */ | |
1418 | static int | |
1419 | inet_pton4(const char *src, unsigned char *dst) | |
1420 | { | |
1421 | int saw_digit, octets, ch; | |
1422 | unsigned char tmp[INADDRSZ], *tp; | |
1423 | ||
1424 | saw_digit = 0; | |
1425 | octets = 0; | |
1426 | *(tp = tmp) = 0; | |
94b4fbf9 | 1427 | while((ch = *src++) != '\0') |
b57f37fb WP |
1428 | { |
1429 | ||
1430 | if(ch >= '0' && ch <= '9') | |
1431 | { | |
1432 | unsigned int new = *tp * 10 + (ch - '0'); | |
1433 | ||
1434 | if(new > 255) | |
1435 | return (0); | |
1436 | *tp = new; | |
1437 | if(!saw_digit) | |
1438 | { | |
1439 | if(++octets > 4) | |
1440 | return (0); | |
1441 | saw_digit = 1; | |
1442 | } | |
1443 | } | |
1444 | else if(ch == '.' && saw_digit) | |
1445 | { | |
1446 | if(octets == 4) | |
1447 | return (0); | |
1448 | *++tp = 0; | |
1449 | saw_digit = 0; | |
1450 | } | |
1451 | else | |
1452 | return (0); | |
1453 | } | |
1454 | if(octets < 4) | |
1455 | return (0); | |
1456 | memcpy(dst, tmp, INADDRSZ); | |
1457 | return (1); | |
1458 | } | |
1459 | ||
1460 | #ifdef RB_IPV6 | |
1461 | /* int | |
1462 | * inet_pton6(src, dst) | |
1463 | * convert presentation level address to network order binary form. | |
1464 | * return: | |
1465 | * 1 if `src' is a valid [RFC1884 2.2] address, else 0. | |
1466 | * notice: | |
1467 | * (1) does not touch `dst' unless it's returning 1. | |
1468 | * (2) :: in a full address is silently ignored. | |
1469 | * credit: | |
1470 | * inspired by Mark Andrews. | |
1471 | * author: | |
1472 | * Paul Vixie, 1996. | |
1473 | */ | |
1474 | ||
1475 | static int | |
1476 | inet_pton6(const char *src, unsigned char *dst) | |
1477 | { | |
1478 | static const char xdigits[] = "0123456789abcdef"; | |
1479 | unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp; | |
1480 | const char *curtok; | |
1481 | int ch, saw_xdigit; | |
1482 | unsigned int val; | |
1483 | ||
1484 | tp = memset(tmp, '\0', IN6ADDRSZ); | |
1485 | endp = tp + IN6ADDRSZ; | |
1486 | colonp = NULL; | |
1487 | /* Leading :: requires some special handling. */ | |
1488 | if(*src == ':') | |
1489 | if(*++src != ':') | |
1490 | return (0); | |
1491 | curtok = src; | |
1492 | saw_xdigit = 0; | |
1493 | val = 0; | |
94b4fbf9 | 1494 | while((ch = tolower(*src++)) != '\0') |
b57f37fb WP |
1495 | { |
1496 | const char *pch; | |
1497 | ||
1498 | pch = strchr(xdigits, ch); | |
1499 | if(pch != NULL) | |
1500 | { | |
1501 | val <<= 4; | |
1502 | val |= (pch - xdigits); | |
1503 | if(val > 0xffff) | |
1504 | return (0); | |
1505 | saw_xdigit = 1; | |
1506 | continue; | |
1507 | } | |
1508 | if(ch == ':') | |
1509 | { | |
1510 | curtok = src; | |
1511 | if(!saw_xdigit) | |
1512 | { | |
1513 | if(colonp) | |
1514 | return (0); | |
1515 | colonp = tp; | |
1516 | continue; | |
1517 | } | |
1518 | else if(*src == '\0') | |
1519 | { | |
1520 | return (0); | |
1521 | } | |
1522 | if(tp + INT16SZ > endp) | |
1523 | return (0); | |
94b4fbf9 VY |
1524 | *tp++ = (unsigned char)(val >> 8) & 0xff; |
1525 | *tp++ = (unsigned char)val & 0xff; | |
b57f37fb WP |
1526 | saw_xdigit = 0; |
1527 | val = 0; | |
1528 | continue; | |
1529 | } | |
1530 | if(*src != '\0' && ch == '.') | |
1531 | { | |
1532 | if(((tp + INADDRSZ) <= endp) && inet_pton4(curtok, tp) > 0) | |
1533 | { | |
1534 | tp += INADDRSZ; | |
1535 | saw_xdigit = 0; | |
1536 | break; /* '\0' was seen by inet_pton4(). */ | |
1537 | } | |
1538 | } | |
1539 | else | |
1540 | continue; | |
1541 | return (0); | |
1542 | } | |
1543 | if(saw_xdigit) | |
1544 | { | |
1545 | if(tp + INT16SZ > endp) | |
1546 | return (0); | |
94b4fbf9 VY |
1547 | *tp++ = (unsigned char)(val >> 8) & 0xff; |
1548 | *tp++ = (unsigned char)val & 0xff; | |
b57f37fb WP |
1549 | } |
1550 | if(colonp != NULL) | |
1551 | { | |
1552 | /* | |
1553 | * Since some memmove()'s erroneously fail to handle | |
1554 | * overlapping regions, we'll do the shift by hand. | |
1555 | */ | |
1556 | const int n = tp - colonp; | |
1557 | int i; | |
1558 | ||
1559 | if(tp == endp) | |
1560 | return (0); | |
94b4fbf9 | 1561 | for(i = 1; i <= n; i++) |
b57f37fb WP |
1562 | { |
1563 | endp[-i] = colonp[n - i]; | |
1564 | colonp[n - i] = 0; | |
1565 | } | |
1566 | tp = endp; | |
1567 | } | |
1568 | if(tp != endp) | |
1569 | return (0); | |
1570 | memcpy(dst, tmp, IN6ADDRSZ); | |
1571 | return (1); | |
1572 | } | |
1573 | #endif | |
1574 | int | |
1575 | rb_inet_pton(int af, const char *src, void *dst) | |
1576 | { | |
1577 | switch (af) | |
1578 | { | |
1579 | case AF_INET: | |
1580 | return (inet_pton4(src, dst)); | |
1581 | #ifdef RB_IPV6 | |
1582 | case AF_INET6: | |
1583 | /* Somebody might have passed as an IPv4 address this is sick but it works */ | |
1584 | if(inet_pton4(src, dst)) | |
1585 | { | |
1586 | char tmp[HOSTIPLEN]; | |
1587 | rb_sprintf(tmp, "::ffff:%s", src); | |
1588 | return (inet_pton6(tmp, dst)); | |
1589 | } | |
1590 | else | |
1591 | return (inet_pton6(src, dst)); | |
1592 | #endif | |
1593 | default: | |
1594 | return (-1); | |
1595 | } | |
1596 | /* NOTREACHED */ | |
1597 | } | |
1598 | ||
1599 | ||
1600 | #ifndef HAVE_SOCKETPAIR | |
94b4fbf9 VY |
1601 | |
1602 | /* mostly based on perl's emulation of socketpair udp */ | |
1603 | static int | |
1604 | rb_inet_socketpair_udp(rb_fde_t **newF1, rb_fde_t **newF2) | |
1605 | { | |
1606 | struct sockaddr_in addr[2]; | |
1607 | rb_socklen_t size = sizeof(struct sockaddr_in); | |
1608 | rb_fde_t *F[2]; | |
1609 | unsigned int fd[2]; | |
1610 | int i, got; | |
1611 | unsigned short port; | |
f030cae8 VY |
1612 | struct timeval wait = { 0, 100000 }; |
1613 | int max; | |
1614 | fd_set rset; | |
1615 | struct sockaddr_in readfrom; | |
1616 | unsigned short buf[2]; | |
1617 | int o_errno; | |
94b4fbf9 VY |
1618 | |
1619 | memset(&addr, 0, sizeof(addr)); | |
1620 | ||
1621 | for(i = 0; i < 2; i++) | |
1622 | { | |
1623 | F[i] = rb_socket(AF_INET, SOCK_DGRAM, 0, "udp socketpair"); | |
1624 | if(F[i] == NULL) | |
1625 | goto failed; | |
1626 | addr[i].sin_family = AF_INET; | |
1627 | addr[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1628 | addr[i].sin_port = 0; | |
1629 | if(bind(rb_get_fd(F[i]), (struct sockaddr *)&addr[i], sizeof(struct sockaddr_in))) | |
1630 | goto failed; | |
1631 | fd[i] = rb_get_fd(F[i]); | |
1632 | } | |
1633 | ||
1634 | for(i = 0; i < 2; i++) | |
1635 | { | |
1636 | if(getsockname(fd[i], (struct sockaddr *)&addr[i], &size)) | |
1637 | goto failed; | |
1638 | if(size != sizeof(struct sockaddr_in)) | |
1639 | goto failed; | |
1640 | if(connect(fd[!i], (struct sockaddr *)&addr[i], sizeof(struct sockaddr_in)) == -1) | |
1641 | goto failed; | |
1642 | } | |
1643 | ||
1644 | for(i = 0; i < 2; i++) | |
1645 | { | |
1646 | port = addr[i].sin_port; | |
1647 | got = rb_write(F[i], &port, sizeof(port)); | |
1648 | if(got != sizeof(port)) | |
1649 | { | |
1650 | if(got == -1) | |
1651 | goto failed; | |
1652 | goto abort_failed; | |
1653 | } | |
1654 | } | |
1655 | ||
f030cae8 | 1656 | max = fd[1] > fd[0] ? fd[1] : fd[0]; |
94b4fbf9 VY |
1657 | FD_ZERO(&rset); |
1658 | FD_SET(fd[0], &rset); | |
1659 | FD_SET(fd[1], &rset); | |
1660 | got = select(max + 1, &rset, NULL, NULL, &wait); | |
1661 | if(got != 2 || !FD_ISSET(fd[0], &rset) || !FD_ISSET(fd[1], &rset)) | |
1662 | { | |
1663 | if(got == -1) | |
1664 | goto failed; | |
1665 | goto abort_failed; | |
1666 | } | |
1667 | ||
94b4fbf9 VY |
1668 | for(i = 0; i < 2; i++) |
1669 | { | |
1670 | #ifdef MSG_DONTWAIT | |
1671 | int flag = MSG_DONTWAIT | |
1672 | #else | |
1673 | int flag = 0; | |
1674 | #endif | |
1675 | got = recvfrom(rb_get_fd(F[i]), (char *)&buf, sizeof(buf), flag, | |
1676 | (struct sockaddr *)&readfrom, &size); | |
1677 | if(got == -1) | |
1678 | goto failed; | |
1679 | if(got != sizeof(port) | |
1680 | || size != sizeof(struct sockaddr_in) | |
1681 | || buf[0] != (unsigned short)addr[!i].sin_port | |
1682 | || readfrom.sin_family != addr[!i].sin_family | |
1683 | || readfrom.sin_addr.s_addr != addr[!i].sin_addr.s_addr | |
1684 | || readfrom.sin_port != addr[!i].sin_port) | |
1685 | goto abort_failed; | |
1686 | } | |
1687 | ||
1688 | *newF1 = F[0]; | |
1689 | *newF2 = F[1]; | |
1690 | return 0; | |
1691 | ||
1692 | #ifdef _WIN32 | |
1693 | #define ECONNABORTED WSAECONNABORTED | |
1694 | #endif | |
1695 | ||
1696 | abort_failed: | |
1697 | rb_get_errno(); | |
1698 | errno = ECONNABORTED; | |
1699 | failed: | |
1700 | if(errno != ECONNABORTED) | |
1701 | rb_get_errno(); | |
f030cae8 | 1702 | o_errno = errno; |
94b4fbf9 VY |
1703 | if(F[0] != NULL) |
1704 | rb_close(F[0]); | |
1705 | if(F[1] != NULL) | |
1706 | rb_close(F[1]); | |
1707 | errno = o_errno; | |
1708 | return -1; | |
1709 | } | |
1710 | ||
1711 | ||
b57f37fb WP |
1712 | int |
1713 | rb_inet_socketpair(int family, int type, int protocol, int fd[2]) | |
1714 | { | |
1715 | int listener = -1; | |
1716 | int connector = -1; | |
1717 | int acceptor = -1; | |
1718 | struct sockaddr_in listen_addr; | |
1719 | struct sockaddr_in connect_addr; | |
94b4fbf9 | 1720 | rb_socklen_t size; |
b57f37fb WP |
1721 | |
1722 | if(protocol || family != AF_INET) | |
1723 | { | |
1724 | errno = EAFNOSUPPORT; | |
1725 | return -1; | |
1726 | } | |
1727 | if(!fd) | |
1728 | { | |
1729 | errno = EINVAL; | |
1730 | return -1; | |
1731 | } | |
1732 | ||
1733 | listener = socket(AF_INET, type, 0); | |
1734 | if(listener == -1) | |
1735 | return -1; | |
1736 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
1737 | listen_addr.sin_family = AF_INET; | |
1738 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1739 | listen_addr.sin_port = 0; /* kernel choses port. */ | |
94b4fbf9 | 1740 | if(bind(listener, (struct sockaddr *)&listen_addr, sizeof(listen_addr)) == -1) |
b57f37fb WP |
1741 | goto tidy_up_and_fail; |
1742 | if(listen(listener, 1) == -1) | |
1743 | goto tidy_up_and_fail; | |
1744 | ||
1745 | connector = socket(AF_INET, type, 0); | |
1746 | if(connector == -1) | |
1747 | goto tidy_up_and_fail; | |
1748 | /* We want to find out the port number to connect to. */ | |
1749 | size = sizeof(connect_addr); | |
94b4fbf9 | 1750 | if(getsockname(listener, (struct sockaddr *)&connect_addr, &size) == -1) |
b57f37fb WP |
1751 | goto tidy_up_and_fail; |
1752 | if(size != sizeof(connect_addr)) | |
1753 | goto abort_tidy_up_and_fail; | |
94b4fbf9 | 1754 | if(connect(connector, (struct sockaddr *)&connect_addr, sizeof(connect_addr)) == -1) |
b57f37fb WP |
1755 | goto tidy_up_and_fail; |
1756 | ||
1757 | size = sizeof(listen_addr); | |
94b4fbf9 | 1758 | acceptor = accept(listener, (struct sockaddr *)&listen_addr, &size); |
b57f37fb WP |
1759 | if(acceptor == -1) |
1760 | goto tidy_up_and_fail; | |
1761 | if(size != sizeof(listen_addr)) | |
1762 | goto abort_tidy_up_and_fail; | |
1763 | close(listener); | |
1764 | /* Now check we are talking to ourself by matching port and host on the | |
1765 | two sockets. */ | |
94b4fbf9 | 1766 | if(getsockname(connector, (struct sockaddr *)&connect_addr, &size) == -1) |
b57f37fb WP |
1767 | goto tidy_up_and_fail; |
1768 | if(size != sizeof(connect_addr) | |
1769 | || listen_addr.sin_family != connect_addr.sin_family | |
1770 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
1771 | || listen_addr.sin_port != connect_addr.sin_port) | |
1772 | { | |
1773 | goto abort_tidy_up_and_fail; | |
1774 | } | |
1775 | fd[0] = connector; | |
1776 | fd[1] = acceptor; | |
1777 | return 0; | |
1778 | ||
1779 | abort_tidy_up_and_fail: | |
1780 | errno = EINVAL; /* I hope this is portable and appropriate. */ | |
1781 | ||
1782 | tidy_up_and_fail: | |
1783 | { | |
1784 | int save_errno = errno; | |
1785 | if(listener != -1) | |
1786 | close(listener); | |
1787 | if(connector != -1) | |
1788 | close(connector); | |
1789 | if(acceptor != -1) | |
1790 | close(acceptor); | |
1791 | errno = save_errno; | |
1792 | return -1; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | #endif | |
1797 | ||
1798 | ||
1799 | static void (*setselect_handler) (rb_fde_t *, unsigned int, PF *, void *); | |
1800 | static int (*select_handler) (long); | |
1801 | static int (*setup_fd_handler) (rb_fde_t *); | |
1802 | static int (*io_sched_event) (struct ev_entry *, int); | |
1803 | static void (*io_unsched_event) (struct ev_entry *); | |
1804 | static int (*io_supports_event) (void); | |
1805 | static void (*io_init_event) (void); | |
1806 | static char iotype[25]; | |
1807 | ||
1808 | const char * | |
1809 | rb_get_iotype(void) | |
1810 | { | |
1811 | return iotype; | |
1812 | } | |
1813 | ||
1814 | static int | |
1815 | rb_unsupported_event(void) | |
1816 | { | |
1817 | return 0; | |
1818 | } | |
1819 | ||
1820 | static int | |
1821 | try_kqueue(void) | |
1822 | { | |
1823 | if(!rb_init_netio_kqueue()) | |
1824 | { | |
1825 | setselect_handler = rb_setselect_kqueue; | |
1826 | select_handler = rb_select_kqueue; | |
1827 | setup_fd_handler = rb_setup_fd_kqueue; | |
1828 | io_sched_event = rb_kqueue_sched_event; | |
1829 | io_unsched_event = rb_kqueue_unsched_event; | |
1830 | io_init_event = rb_kqueue_init_event; | |
1831 | io_supports_event = rb_kqueue_supports_event; | |
1832 | rb_strlcpy(iotype, "kqueue", sizeof(iotype)); | |
1833 | return 0; | |
1834 | } | |
94b4fbf9 | 1835 | return -1; |
b57f37fb WP |
1836 | } |
1837 | ||
1838 | static int | |
1839 | try_epoll(void) | |
1840 | { | |
1841 | if(!rb_init_netio_epoll()) | |
1842 | { | |
1843 | setselect_handler = rb_setselect_epoll; | |
1844 | select_handler = rb_select_epoll; | |
1845 | setup_fd_handler = rb_setup_fd_epoll; | |
1846 | io_sched_event = rb_epoll_sched_event; | |
1847 | io_unsched_event = rb_epoll_unsched_event; | |
1848 | io_supports_event = rb_epoll_supports_event; | |
1849 | io_init_event = rb_epoll_init_event; | |
1850 | rb_strlcpy(iotype, "epoll", sizeof(iotype)); | |
1851 | return 0; | |
1852 | } | |
1853 | return -1; | |
1854 | } | |
1855 | ||
1856 | static int | |
1857 | try_ports(void) | |
1858 | { | |
1859 | if(!rb_init_netio_ports()) | |
1860 | { | |
1861 | setselect_handler = rb_setselect_ports; | |
1862 | select_handler = rb_select_ports; | |
94b4fbf9 | 1863 | setup_fd_handler = rb_setup_fd_ports; |
f030cae8 VY |
1864 | io_sched_event = rb_ports_sched_event; |
1865 | io_unsched_event = rb_ports_unsched_event; | |
1866 | io_init_event = rb_ports_init_event; | |
1867 | io_supports_event = rb_ports_supports_event; | |
b57f37fb WP |
1868 | rb_strlcpy(iotype, "ports", sizeof(iotype)); |
1869 | return 0; | |
1870 | } | |
1871 | return -1; | |
1872 | } | |
1873 | ||
1874 | static int | |
1875 | try_devpoll(void) | |
1876 | { | |
1877 | if(!rb_init_netio_devpoll()) | |
1878 | { | |
1879 | setselect_handler = rb_setselect_devpoll; | |
1880 | select_handler = rb_select_devpoll; | |
94b4fbf9 | 1881 | setup_fd_handler = rb_setup_fd_devpoll; |
b57f37fb WP |
1882 | io_sched_event = NULL; |
1883 | io_unsched_event = NULL; | |
1884 | io_init_event = NULL; | |
1885 | io_supports_event = rb_unsupported_event; | |
1886 | rb_strlcpy(iotype, "devpoll", sizeof(iotype)); | |
1887 | return 0; | |
1888 | } | |
1889 | return -1; | |
1890 | } | |
1891 | ||
1892 | static int | |
1893 | try_sigio(void) | |
1894 | { | |
1895 | if(!rb_init_netio_sigio()) | |
1896 | { | |
1897 | setselect_handler = rb_setselect_sigio; | |
1898 | select_handler = rb_select_sigio; | |
94b4fbf9 | 1899 | setup_fd_handler = rb_setup_fd_sigio; |
b57f37fb | 1900 | io_sched_event = rb_sigio_sched_event; |
94b4fbf9 VY |
1901 | io_unsched_event = rb_sigio_unsched_event; |
1902 | io_supports_event = rb_sigio_supports_event; | |
1903 | io_init_event = rb_sigio_init_event; | |
1904 | ||
b57f37fb WP |
1905 | rb_strlcpy(iotype, "sigio", sizeof(iotype)); |
1906 | return 0; | |
1907 | } | |
1908 | return -1; | |
1909 | } | |
1910 | ||
94b4fbf9 | 1911 | static int |
b57f37fb WP |
1912 | try_poll(void) |
1913 | { | |
1914 | if(!rb_init_netio_poll()) | |
1915 | { | |
1916 | setselect_handler = rb_setselect_poll; | |
1917 | select_handler = rb_select_poll; | |
94b4fbf9 | 1918 | setup_fd_handler = rb_setup_fd_poll; |
b57f37fb WP |
1919 | io_sched_event = NULL; |
1920 | io_unsched_event = NULL; | |
1921 | io_init_event = NULL; | |
1922 | io_supports_event = rb_unsupported_event; | |
1923 | rb_strlcpy(iotype, "poll", sizeof(iotype)); | |
1924 | return 0; | |
1925 | } | |
1926 | return -1; | |
1927 | } | |
1928 | ||
1929 | static int | |
1930 | try_win32(void) | |
1931 | { | |
1932 | if(!rb_init_netio_win32()) | |
1933 | { | |
1934 | setselect_handler = rb_setselect_win32; | |
1935 | select_handler = rb_select_win32; | |
94b4fbf9 | 1936 | setup_fd_handler = rb_setup_fd_win32; |
b57f37fb WP |
1937 | io_sched_event = NULL; |
1938 | io_unsched_event = NULL; | |
1939 | io_init_event = NULL; | |
1940 | io_supports_event = rb_unsupported_event; | |
1941 | rb_strlcpy(iotype, "win32", sizeof(iotype)); | |
1942 | return 0; | |
1943 | } | |
1944 | return -1; | |
1945 | } | |
1946 | ||
1947 | static int | |
1948 | try_select(void) | |
94b4fbf9 | 1949 | { |
b57f37fb WP |
1950 | if(!rb_init_netio_select()) |
1951 | { | |
1952 | setselect_handler = rb_setselect_select; | |
1953 | select_handler = rb_select_select; | |
94b4fbf9 | 1954 | setup_fd_handler = rb_setup_fd_select; |
b57f37fb WP |
1955 | io_sched_event = NULL; |
1956 | io_unsched_event = NULL; | |
1957 | io_init_event = NULL; | |
1958 | io_supports_event = rb_unsupported_event; | |
1959 | rb_strlcpy(iotype, "select", sizeof(iotype)); | |
1960 | return 0; | |
1961 | } | |
1962 | return -1; | |
1963 | } | |
1964 | ||
1965 | ||
1966 | int | |
1967 | rb_io_sched_event(struct ev_entry *ev, int when) | |
1968 | { | |
94b4fbf9 VY |
1969 | if(ev == NULL || io_supports_event == NULL || io_sched_event == NULL |
1970 | || !io_supports_event()) | |
b57f37fb WP |
1971 | return 0; |
1972 | return io_sched_event(ev, when); | |
1973 | } | |
1974 | ||
1975 | void | |
1976 | rb_io_unsched_event(struct ev_entry *ev) | |
1977 | { | |
94b4fbf9 VY |
1978 | if(ev == NULL || io_supports_event == NULL || io_unsched_event == NULL |
1979 | || !io_supports_event()) | |
b57f37fb | 1980 | return; |
94b4fbf9 | 1981 | io_unsched_event(ev); |
b57f37fb | 1982 | } |
94b4fbf9 | 1983 | |
b57f37fb WP |
1984 | int |
1985 | rb_io_supports_event(void) | |
1986 | { | |
1987 | if(io_supports_event == NULL) | |
1988 | return 0; | |
1989 | return io_supports_event(); | |
1990 | } | |
1991 | ||
1992 | void | |
1993 | rb_io_init_event(void) | |
1994 | { | |
1995 | io_init_event(); | |
1996 | rb_event_io_register_all(); | |
1997 | } | |
1998 | ||
1999 | void | |
2000 | rb_init_netio(void) | |
2001 | { | |
2002 | char *ioenv = getenv("LIBRB_USE_IOTYPE"); | |
2003 | rb_fd_table = rb_malloc(RB_FD_HASH_SIZE * sizeof(rb_dlink_list)); | |
2004 | rb_init_ssl(); | |
94b4fbf9 | 2005 | |
b57f37fb WP |
2006 | if(ioenv != NULL) |
2007 | { | |
2008 | if(!strcmp("epoll", ioenv)) | |
2009 | { | |
2010 | if(!try_epoll()) | |
2011 | return; | |
94b4fbf9 VY |
2012 | } |
2013 | else if(!strcmp("kqueue", ioenv)) | |
b57f37fb WP |
2014 | { |
2015 | if(!try_kqueue()) | |
2016 | return; | |
94b4fbf9 VY |
2017 | } |
2018 | else if(!strcmp("ports", ioenv)) | |
b57f37fb WP |
2019 | { |
2020 | if(!try_ports()) | |
2021 | return; | |
94b4fbf9 VY |
2022 | } |
2023 | else if(!strcmp("poll", ioenv)) | |
b57f37fb WP |
2024 | { |
2025 | if(!try_poll()) | |
2026 | return; | |
94b4fbf9 VY |
2027 | } |
2028 | else if(!strcmp("devpoll", ioenv)) | |
b57f37fb WP |
2029 | { |
2030 | if(!try_devpoll()) | |
2031 | return; | |
94b4fbf9 VY |
2032 | } |
2033 | else if(!strcmp("sigio", ioenv)) | |
b57f37fb WP |
2034 | { |
2035 | if(!try_sigio()) | |
2036 | return; | |
94b4fbf9 VY |
2037 | } |
2038 | else if(!strcmp("select", ioenv)) | |
b57f37fb | 2039 | { |
94b4fbf9 | 2040 | if(!try_select()) |
b57f37fb WP |
2041 | return; |
2042 | } | |
94b4fbf9 | 2043 | if(!strcmp("win32", ioenv)) |
b57f37fb | 2044 | { |
94b4fbf9 | 2045 | if(!try_win32()) |
b57f37fb WP |
2046 | return; |
2047 | } | |
94b4fbf9 | 2048 | |
b57f37fb WP |
2049 | } |
2050 | ||
2051 | if(!try_kqueue()) | |
2052 | return; | |
2053 | if(!try_epoll()) | |
2054 | return; | |
2055 | if(!try_ports()) | |
2056 | return; | |
2057 | if(!try_devpoll()) | |
2058 | return; | |
2059 | if(!try_sigio()) | |
2060 | return; | |
2061 | if(!try_poll()) | |
2062 | return; | |
2063 | if(!try_win32()) | |
2064 | return; | |
2065 | if(!try_select()) | |
2066 | return; | |
2067 | ||
2068 | rb_lib_log("rb_init_netio: Could not find any io handlers...giving up"); | |
2069 | ||
2070 | abort(); | |
2071 | } | |
2072 | ||
94b4fbf9 | 2073 | void |
b57f37fb WP |
2074 | rb_setselect(rb_fde_t *F, unsigned int type, PF * handler, void *client_data) |
2075 | { | |
2076 | setselect_handler(F, type, handler, client_data); | |
2077 | } | |
2078 | ||
94b4fbf9 | 2079 | int |
b57f37fb WP |
2080 | rb_select(unsigned long timeout) |
2081 | { | |
2082 | int ret = select_handler(timeout); | |
2083 | free_fds(); | |
2084 | return ret; | |
2085 | } | |
2086 | ||
94b4fbf9 | 2087 | int |
b57f37fb WP |
2088 | rb_setup_fd(rb_fde_t *F) |
2089 | { | |
2090 | return setup_fd_handler(F); | |
2091 | } | |
2092 | ||
2093 | ||
2094 | ||
2095 | int | |
2096 | rb_ignore_errno(int error) | |
2097 | { | |
94b4fbf9 | 2098 | switch (error) |
b57f37fb WP |
2099 | { |
2100 | #ifdef EINPROGRESS | |
94b4fbf9 | 2101 | case EINPROGRESS: |
b57f37fb WP |
2102 | #endif |
2103 | #if defined EWOULDBLOCK | |
94b4fbf9 | 2104 | case EWOULDBLOCK: |
b57f37fb WP |
2105 | #endif |
2106 | #if defined(EAGAIN) && (EWOULDBLOCK != EAGAIN) | |
94b4fbf9 | 2107 | case EAGAIN: |
b57f37fb WP |
2108 | #endif |
2109 | #ifdef EINTR | |
94b4fbf9 | 2110 | case EINTR: |
b57f37fb WP |
2111 | #endif |
2112 | #ifdef ERESTART | |
94b4fbf9 | 2113 | case ERESTART: |
b57f37fb WP |
2114 | #endif |
2115 | #ifdef ENOBUFS | |
94b4fbf9 VY |
2116 | case ENOBUFS: |
2117 | #endif | |
2118 | return 1; | |
2119 | default: | |
2120 | break; | |
2121 | } | |
b57f37fb WP |
2122 | return 0; |
2123 | } | |
2124 | ||
2125 | ||
94b4fbf9 | 2126 | #if defined(HAVE_SENDMSG) && !defined(WIN32) |
b57f37fb WP |
2127 | int |
2128 | rb_recv_fd_buf(rb_fde_t *F, void *data, size_t datasize, rb_fde_t **xF, int nfds) | |
2129 | { | |
2130 | struct msghdr msg; | |
2131 | struct cmsghdr *cmsg; | |
2132 | struct iovec iov[1]; | |
2133 | struct stat st; | |
4414eb3c | 2134 | uint8_t stype = RB_FD_UNKNOWN; |
b57f37fb WP |
2135 | const char *desc; |
2136 | int fd, len, x, rfds; | |
2137 | ||
2138 | int control_len = CMSG_SPACE(sizeof(int) * nfds); | |
2139 | ||
2140 | iov[0].iov_base = data; | |
2141 | iov[0].iov_len = datasize; | |
94b4fbf9 | 2142 | |
b57f37fb WP |
2143 | msg.msg_name = NULL; |
2144 | msg.msg_namelen = 0; | |
2145 | msg.msg_iov = iov; | |
2146 | msg.msg_iovlen = 1; | |
2147 | msg.msg_flags = 0; | |
2148 | cmsg = alloca(control_len); | |
2149 | msg.msg_control = cmsg; | |
2150 | msg.msg_controllen = control_len; | |
2151 | ||
2152 | if((len = recvmsg(rb_get_fd(F), &msg, 0)) <= 0) | |
2153 | return len; | |
2154 | ||
94b4fbf9 VY |
2155 | if(msg.msg_controllen > 0 && msg.msg_control != NULL |
2156 | && (cmsg = CMSG_FIRSTHDR(&msg)) != NULL) | |
b57f37fb | 2157 | { |
4486c200 | 2158 | rfds = ((unsigned char *)cmsg + cmsg->cmsg_len - CMSG_DATA(cmsg)) / sizeof(int); |
b57f37fb WP |
2159 | |
2160 | for(x = 0; x < nfds && x < rfds; x++) | |
2161 | { | |
2162 | fd = ((int *)CMSG_DATA(cmsg))[x]; | |
2163 | stype = RB_FD_UNKNOWN; | |
2164 | desc = "remote unknown"; | |
2165 | if(!fstat(fd, &st)) | |
2166 | { | |
2167 | if(S_ISSOCK(st.st_mode)) | |
2168 | { | |
2169 | stype = RB_FD_SOCKET; | |
2170 | desc = "remote socket"; | |
2171 | } | |
2172 | else if(S_ISFIFO(st.st_mode)) | |
2173 | { | |
2174 | stype = RB_FD_PIPE; | |
2175 | desc = "remote pipe"; | |
2176 | } | |
2177 | else if(S_ISREG(st.st_mode)) | |
2178 | { | |
2179 | stype = RB_FD_FILE; | |
2180 | desc = "remote file"; | |
2181 | } | |
2182 | } | |
2183 | xF[x] = rb_open(fd, stype, desc); | |
2184 | } | |
94b4fbf9 VY |
2185 | } |
2186 | else | |
b57f37fb | 2187 | *xF = NULL; |
94b4fbf9 | 2188 | return len; |
b57f37fb WP |
2189 | } |
2190 | ||
2191 | ||
2192 | int | |
94b4fbf9 | 2193 | rb_send_fd_buf(rb_fde_t *xF, rb_fde_t **F, int count, void *data, size_t datasize, pid_t pid) |
b57f37fb WP |
2194 | { |
2195 | int n; | |
2196 | struct msghdr msg; | |
2197 | struct cmsghdr *cmsg; | |
2198 | struct iovec iov[1]; | |
2199 | char empty = '0'; | |
2200 | char *buf; | |
2201 | ||
2202 | memset(&msg, 0, sizeof(&msg)); | |
2203 | if(datasize == 0) | |
2204 | { | |
2205 | iov[0].iov_base = ∅ | |
94b4fbf9 VY |
2206 | iov[0].iov_len = 1; |
2207 | } | |
2208 | else | |
2209 | { | |
b57f37fb WP |
2210 | iov[0].iov_base = data; |
2211 | iov[0].iov_len = datasize; | |
2212 | } | |
2213 | msg.msg_iov = iov; | |
2214 | msg.msg_iovlen = 1; | |
2215 | msg.msg_name = NULL; | |
2216 | msg.msg_namelen = 0; | |
2217 | msg.msg_flags = 0; | |
2218 | msg.msg_control = NULL; | |
2219 | msg.msg_controllen = 0; | |
2220 | ||
2221 | if(count > 0) | |
2222 | { | |
2223 | int i; | |
2224 | int len = CMSG_SPACE(sizeof(int) * count); | |
2225 | buf = alloca(len); | |
2226 | ||
2227 | msg.msg_control = buf; | |
2228 | msg.msg_controllen = len; | |
2229 | cmsg = CMSG_FIRSTHDR(&msg); | |
2230 | cmsg->cmsg_level = SOL_SOCKET; | |
2231 | cmsg->cmsg_type = SCM_RIGHTS; | |
2232 | cmsg->cmsg_len = CMSG_LEN(sizeof(int) * count); | |
2233 | ||
2234 | for(i = 0; i < count; i++) | |
94b4fbf9 VY |
2235 | { |
2236 | ((int *)CMSG_DATA(cmsg))[i] = rb_get_fd(F[i]); | |
b57f37fb WP |
2237 | } |
2238 | msg.msg_controllen = cmsg->cmsg_len; | |
2239 | } | |
2240 | n = sendmsg(rb_get_fd(xF), &msg, MSG_NOSIGNAL); | |
2241 | return n; | |
2242 | } | |
94b4fbf9 VY |
2243 | #else |
2244 | #ifndef _WIN32 | |
2245 | int | |
2246 | rb_recv_fd_buf(rb_fde_t *F, void *data, size_t datasize, rb_fde_t **xF, int nfds) | |
2247 | { | |
2248 | errno = ENOSYS; | |
2249 | return -1; | |
2250 | } | |
b57f37fb | 2251 | |
94b4fbf9 VY |
2252 | int |
2253 | rb_send_fd_buf(rb_fde_t *xF, rb_fde_t **F, int count, void *data, size_t datasize, pid_t pid) | |
2254 | { | |
2255 | errno = ENOSYS; | |
2256 | return -1; | |
2257 | } | |
2258 | #endif | |
2259 | #endif |