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db137867 AC |
1 | /* |
2 | * ircd-ratbox: A slightly useful ircd. | |
3 | * commio.c: Network/file related functions | |
4 | * | |
5 | * Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center | |
6 | * Copyright (C) 1996-2002 Hybrid Development Team | |
7 | * Copyright (C) 2002-2005 ircd-ratbox development team | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 | |
22 | * USA | |
23 | * | |
db137867 | 24 | */ |
c056dba2 | 25 | |
fe037171 EM |
26 | #include <librb_config.h> |
27 | #include <rb_lib.h> | |
db137867 AC |
28 | #include <commio-int.h> |
29 | #include <commio-ssl.h> | |
30 | #include <event-int.h> | |
31 | #ifdef HAVE_SYS_UIO_H | |
32 | #include <sys/uio.h> | |
33 | #endif | |
34 | #define HAVE_SSL 1 | |
35 | ||
36 | #ifndef MSG_NOSIGNAL | |
37 | #define MSG_NOSIGNAL 0 | |
38 | #endif | |
39 | ||
40 | ||
41 | struct timeout_data | |
42 | { | |
43 | rb_fde_t *F; | |
44 | rb_dlink_node node; | |
45 | time_t timeout; | |
46 | PF *timeout_handler; | |
47 | void *timeout_data; | |
48 | }; | |
49 | ||
50 | rb_dlink_list *rb_fd_table; | |
51 | static rb_bh *fd_heap; | |
52 | ||
53 | static rb_dlink_list timeout_list; | |
54 | static rb_dlink_list closed_list; | |
55 | ||
56 | static struct ev_entry *rb_timeout_ev; | |
57 | ||
58 | ||
59 | static const char *rb_err_str[] = { "Comm OK", "Error during bind()", | |
60 | "Error during DNS lookup", "connect timeout", | |
61 | "Error during connect()", | |
3cbcc111 JT |
62 | "Comm Error", |
63 | "Error with SSL" | |
db137867 AC |
64 | }; |
65 | ||
66 | /* Highest FD and number of open FDs .. */ | |
67 | static int number_fd = 0; | |
3202e249 | 68 | int rb_maxconnections = 0; |
db137867 AC |
69 | |
70 | static PF rb_connect_timeout; | |
71 | static PF rb_connect_tryconnect; | |
72 | #ifdef RB_IPV6 | |
73 | static void mangle_mapped_sockaddr(struct sockaddr *in); | |
74 | #endif | |
75 | ||
76 | #ifndef HAVE_SOCKETPAIR | |
339150ec | 77 | static int rb_inet_socketpair(int d, int type, int protocol, rb_platform_fd_t sv[2]); |
3202e249 | 78 | static int rb_inet_socketpair_udp(rb_fde_t **newF1, rb_fde_t **newF2); |
db137867 AC |
79 | #endif |
80 | ||
81 | static inline rb_fde_t * | |
dc7e6b42 | 82 | add_fd(rb_platform_fd_t fd) |
db137867 AC |
83 | { |
84 | rb_fde_t *F = rb_find_fd(fd); | |
db137867 AC |
85 | |
86 | /* look up to see if we have it already */ | |
87 | if(F != NULL) | |
3202e249 VY |
88 | return F; |
89 | ||
db137867 AC |
90 | F = rb_bh_alloc(fd_heap); |
91 | F->fd = fd; | |
a9fb3ed0 | 92 | rb_dlinkAdd(F, &F->node, &rb_fd_table[rb_hash_fd(fd)]); |
3202e249 | 93 | return (F); |
db137867 AC |
94 | } |
95 | ||
96 | static inline void | |
97 | remove_fd(rb_fde_t *F) | |
98 | { | |
db137867 AC |
99 | if(F == NULL || !IsFDOpen(F)) |
100 | return; | |
3202e249 | 101 | |
a9fb3ed0 | 102 | rb_dlinkMoveNode(&F->node, &rb_fd_table[rb_hash_fd(F->fd)], &closed_list); |
db137867 AC |
103 | } |
104 | ||
3202e249 | 105 | static void |
db137867 AC |
106 | free_fds(void) |
107 | { | |
108 | rb_fde_t *F; | |
109 | rb_dlink_node *ptr, *next; | |
110 | RB_DLINK_FOREACH_SAFE(ptr, next, closed_list.head) | |
111 | { | |
112 | F = ptr->data; | |
ff0414c8 SA |
113 | |
114 | number_fd--; | |
115 | ||
116 | #ifdef _WIN32 | |
117 | if(F->type & (RB_FD_SOCKET | RB_FD_PIPE)) | |
118 | closesocket(F->fd); | |
119 | else | |
120 | #endif | |
121 | close(F->fd); | |
122 | ||
db137867 AC |
123 | rb_dlinkDelete(ptr, &closed_list); |
124 | rb_bh_free(fd_heap, F); | |
125 | } | |
126 | } | |
127 | ||
128 | /* 32bit solaris is kinda slow and stdio only supports fds < 256 | |
129 | * so we got to do this crap below. | |
130 | * (BTW Fuck you Sun, I hate your guts and I hope you go bankrupt soon) | |
131 | */ | |
132 | ||
133 | #if defined (__SVR4) && defined (__sun) | |
134 | static void | |
135 | rb_fd_hack(int *fd) | |
136 | { | |
137 | int newfd; | |
138 | if(*fd > 256 || *fd < 0) | |
139 | return; | |
140 | if((newfd = fcntl(*fd, F_DUPFD, 256)) != -1) | |
141 | { | |
142 | close(*fd); | |
143 | *fd = newfd; | |
144 | } | |
145 | return; | |
146 | } | |
147 | #else | |
148 | #define rb_fd_hack(fd) | |
149 | #endif | |
150 | ||
151 | ||
152 | /* close_all_connections() can be used *before* the system come up! */ | |
153 | ||
154 | static void | |
155 | rb_close_all(void) | |
156 | { | |
3202e249 | 157 | #ifndef _WIN32 |
db137867 | 158 | int i; |
db137867 AC |
159 | |
160 | /* XXX someone tell me why we care about 4 fd's ? */ | |
161 | /* XXX btw, fd 3 is used for profiler ! */ | |
3202e249 | 162 | for(i = 3; i < rb_maxconnections; ++i) |
db137867 AC |
163 | { |
164 | close(i); | |
165 | } | |
db137867 AC |
166 | #endif |
167 | } | |
168 | ||
169 | /* | |
170 | * get_sockerr - get the error value from the socket or the current errno | |
171 | * | |
172 | * Get the *real* error from the socket (well try to anyway..). | |
173 | * This may only work when SO_DEBUG is enabled but its worth the | |
174 | * gamble anyway. | |
175 | */ | |
176 | int | |
177 | rb_get_sockerr(rb_fde_t *F) | |
178 | { | |
179 | int errtmp; | |
180 | int err = 0; | |
181 | rb_socklen_t len = sizeof(err); | |
182 | ||
183 | if(!(F->type & RB_FD_SOCKET)) | |
184 | return errno; | |
185 | ||
186 | rb_get_errno(); | |
187 | errtmp = errno; | |
188 | ||
189 | #ifdef SO_ERROR | |
3202e249 VY |
190 | if(F != NULL |
191 | && !getsockopt(rb_get_fd(F), SOL_SOCKET, SO_ERROR, (char *)&err, (rb_socklen_t *) & len)) | |
db137867 AC |
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 | { | |
3202e249 | 207 | return (rb_maxconnections); |
db137867 AC |
208 | } |
209 | ||
210 | /* | |
211 | * set_sock_buffers - set send and receive buffers for socket | |
55abcbb2 | 212 | * |
db137867 AC |
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 | |
3202e249 VY |
224 | (F->fd, SOL_SOCKET, SO_RCVBUF, (char *)&size, sizeof(size)) |
225 | || setsockopt(F->fd, SOL_SOCKET, SO_SNDBUF, (char *)&size, sizeof(size))) | |
db137867 AC |
226 | return 0; |
227 | return 1; | |
228 | } | |
229 | ||
230 | /* | |
55abcbb2 | 231 | * set_non_blocking - Set the client connection into non-blocking mode. |
db137867 AC |
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; | |
dc7e6b42 | 243 | rb_platform_fd_t fd; |
db137867 AC |
244 | if(F == NULL) |
245 | return 0; | |
246 | fd = F->fd; | |
3202e249 | 247 | |
db137867 AC |
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; | |
3202e249 | 280 | if(callback == NULL) /* user wants to remove */ |
db137867 AC |
281 | { |
282 | if(td == NULL) | |
283 | return; | |
284 | rb_dlinkDelete(&td->node, &timeout_list); | |
285 | rb_free(td); | |
286 | F->timeout = NULL; | |
3202e249 | 287 | if(rb_dlink_list_length(&timeout_list) == 0) |
db137867 AC |
288 | { |
289 | rb_event_delete(rb_timeout_ev); | |
290 | rb_timeout_ev = NULL; | |
291 | } | |
292 | return; | |
293 | } | |
294 | ||
295 | if(F->timeout == NULL) | |
3202e249 VY |
296 | td = F->timeout = rb_malloc(sizeof(struct timeout_data)); |
297 | ||
db137867 AC |
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 | { | |
3202e249 | 305 | rb_timeout_ev = rb_event_add("rb_checktimeouts", rb_checktimeouts, NULL, 5); |
db137867 AC |
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); | |
3202e249 | 340 | } |
db137867 AC |
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 | { | |
3202e249 VY |
368 | rb_lib_log |
369 | ("rb_accept: new_F == NULL on incoming connection. Closing new_fd == %d\n", | |
370 | new_fd); | |
a9fb3ed0 VY |
371 | close(new_fd); |
372 | continue; | |
373 | } | |
374 | ||
c2ac22cc | 375 | if(rb_unlikely(!rb_set_nb(new_F))) |
db137867 AC |
376 | { |
377 | rb_get_errno(); | |
378 | rb_lib_log("rb_accept: Couldn't set FD %d non blocking!", new_F->fd); | |
379 | rb_close(new_F); | |
380 | } | |
381 | ||
382 | #ifdef RB_IPV6 | |
383 | mangle_mapped_sockaddr((struct sockaddr *)&st); | |
384 | #endif | |
3202e249 | 385 | |
db137867 AC |
386 | if(F->accept->precb != NULL) |
387 | { | |
3202e249 | 388 | if(!F->accept->precb(new_F, (struct sockaddr *)&st, addrlen, F->accept->data)) /* pre-callback decided to drop it */ |
db137867 AC |
389 | continue; |
390 | } | |
391 | #ifdef HAVE_SSL | |
392 | if(F->type & RB_FD_SSL) | |
393 | { | |
a9fb3ed0 | 394 | rb_ssl_accept_setup(F, new_F, (struct sockaddr *)&st, addrlen); |
3202e249 | 395 | } |
db137867 | 396 | else |
3202e249 | 397 | #endif /* HAVE_SSL */ |
db137867 | 398 | { |
3202e249 VY |
399 | F->accept->callback(new_F, RB_OK, (struct sockaddr *)&st, addrlen, |
400 | F->accept->data); | |
db137867 AC |
401 | } |
402 | } | |
403 | ||
404 | } | |
405 | ||
406 | /* try to accept a TCP connection */ | |
407 | void | |
3202e249 | 408 | rb_accept_tcp(rb_fde_t *F, ACPRE * precb, ACCB * callback, void *data) |
db137867 AC |
409 | { |
410 | if(F == NULL) | |
411 | return; | |
412 | lrb_assert(callback); | |
413 | ||
414 | F->accept = rb_malloc(sizeof(struct acceptdata)); | |
415 | F->accept->callback = callback; | |
416 | F->accept->data = data; | |
417 | F->accept->precb = precb; | |
418 | rb_accept_tryaccept(F, NULL); | |
419 | } | |
420 | ||
421 | /* | |
dc7e6b42 | 422 | * void rb_connect_tcp(rb_platform_fd_t fd, struct sockaddr *dest, |
5ad62c80 | 423 | * struct sockaddr *clocal, |
db137867 AC |
424 | * CNCB *callback, void *data, int timeout) |
425 | * Input: An fd to connect with, a host and port to connect to, | |
5ad62c80 | 426 | * a local sockaddr to connect from (or NULL to use the |
db137867 AC |
427 | * default), a callback, the data to pass into the callback, the |
428 | * address family. | |
429 | * Output: None. | |
430 | * Side-effects: A non-blocking connection to the host is started, and | |
431 | * if necessary, set up for selection. The callback given | |
432 | * may be called now, or it may be called later. | |
433 | */ | |
434 | void | |
435 | rb_connect_tcp(rb_fde_t *F, struct sockaddr *dest, | |
5ad62c80 | 436 | struct sockaddr *clocal, CNCB * callback, void *data, int timeout) |
db137867 AC |
437 | { |
438 | if(F == NULL) | |
439 | return; | |
3202e249 | 440 | |
db137867 AC |
441 | lrb_assert(callback); |
442 | F->connect = rb_malloc(sizeof(struct conndata)); | |
443 | F->connect->callback = callback; | |
444 | F->connect->data = data; | |
445 | ||
446 | memcpy(&F->connect->hostaddr, dest, sizeof(F->connect->hostaddr)); | |
447 | ||
448 | /* Note that we're using a passed sockaddr here. This is because | |
449 | * generally you'll be bind()ing to a sockaddr grabbed from | |
450 | * getsockname(), so this makes things easier. | |
451 | * XXX If NULL is passed as local, we should later on bind() to the | |
452 | * virtual host IP, for completeness. | |
453 | * -- adrian | |
454 | */ | |
5ad62c80 | 455 | if((clocal != NULL) && (bind(F->fd, clocal, GET_SS_LEN(clocal)) < 0)) |
db137867 AC |
456 | { |
457 | /* Failure, call the callback with RB_ERR_BIND */ | |
458 | rb_connect_callback(F, RB_ERR_BIND); | |
459 | /* ... and quit */ | |
460 | return; | |
461 | } | |
462 | ||
463 | /* We have a valid IP, so we just call tryconnect */ | |
464 | /* Make sure we actually set the timeout here .. */ | |
465 | rb_settimeout(F, timeout, rb_connect_timeout, NULL); | |
466 | rb_connect_tryconnect(F, NULL); | |
467 | } | |
468 | ||
469 | ||
470 | /* | |
471 | * rb_connect_callback() - call the callback, and continue with life | |
472 | */ | |
473 | void | |
474 | rb_connect_callback(rb_fde_t *F, int status) | |
475 | { | |
476 | CNCB *hdl; | |
477 | void *data; | |
3202e249 | 478 | int errtmp = errno; /* save errno as rb_settimeout clobbers it sometimes */ |
db137867 AC |
479 | |
480 | /* This check is gross..but probably necessary */ | |
481 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
482 | return; | |
483 | /* Clear the connect flag + handler */ | |
484 | hdl = F->connect->callback; | |
485 | data = F->connect->data; | |
486 | F->connect->callback = NULL; | |
487 | ||
aec4c3cb | 488 | |
db137867 AC |
489 | /* Clear the timeout handler */ |
490 | rb_settimeout(F, 0, NULL, NULL); | |
3202e249 | 491 | errno = errtmp; |
db137867 AC |
492 | /* Call the handler */ |
493 | hdl(F, status, data); | |
494 | } | |
495 | ||
496 | ||
497 | /* | |
498 | * rb_connect_timeout() - this gets called when the socket connection | |
499 | * times out. This *only* can be called once connect() is initially | |
500 | * called .. | |
501 | */ | |
502 | static void | |
503 | rb_connect_timeout(rb_fde_t *F, void *notused) | |
504 | { | |
505 | /* error! */ | |
506 | rb_connect_callback(F, RB_ERR_TIMEOUT); | |
507 | } | |
508 | ||
dc7e6b42 | 509 | /* static void rb_connect_tryconnect(rb_platform_fd_t fd, void *notused) |
db137867 AC |
510 | * Input: The fd, the handler data(unused). |
511 | * Output: None. | |
512 | * Side-effects: Try and connect with pending connect data for the FD. If | |
513 | * we succeed or get a fatal error, call the callback. | |
514 | * Otherwise, it is still blocking or something, so register | |
515 | * to select for a write event on this FD. | |
516 | */ | |
517 | static void | |
518 | rb_connect_tryconnect(rb_fde_t *F, void *notused) | |
519 | { | |
520 | int retval; | |
521 | ||
522 | if(F == NULL || F->connect == NULL || F->connect->callback == NULL) | |
523 | return; | |
524 | /* Try the connect() */ | |
525 | retval = connect(F->fd, | |
3202e249 VY |
526 | (struct sockaddr *)&F->connect->hostaddr, |
527 | GET_SS_LEN(&F->connect->hostaddr)); | |
db137867 AC |
528 | /* Error? */ |
529 | if(retval < 0) | |
530 | { | |
531 | /* | |
532 | * If we get EISCONN, then we've already connect()ed the socket, | |
533 | * which is a good thing. | |
534 | * -- adrian | |
535 | */ | |
536 | rb_get_errno(); | |
537 | if(errno == EISCONN) | |
538 | rb_connect_callback(F, RB_OK); | |
539 | else if(rb_ignore_errno(errno)) | |
540 | /* Ignore error? Reschedule */ | |
3202e249 | 541 | rb_setselect(F, RB_SELECT_CONNECT, rb_connect_tryconnect, NULL); |
db137867 AC |
542 | else |
543 | /* Error? Fail with RB_ERR_CONNECT */ | |
544 | rb_connect_callback(F, RB_ERR_CONNECT); | |
545 | return; | |
546 | } | |
547 | /* If we get here, we've suceeded, so call with RB_OK */ | |
548 | rb_connect_callback(F, RB_OK); | |
549 | } | |
550 | ||
551 | ||
552 | int | |
553 | rb_connect_sockaddr(rb_fde_t *F, struct sockaddr *addr, int len) | |
554 | { | |
555 | if(F == NULL) | |
556 | return 0; | |
557 | ||
558 | memcpy(addr, &F->connect->hostaddr, len); | |
559 | return 1; | |
560 | } | |
561 | ||
562 | /* | |
563 | * rb_error_str() - return an error string for the given error condition | |
564 | */ | |
565 | const char * | |
566 | rb_errstr(int error) | |
567 | { | |
568 | if(error < 0 || error >= RB_ERR_MAX) | |
569 | return "Invalid error number!"; | |
570 | return rb_err_str[error]; | |
571 | } | |
572 | ||
573 | ||
574 | int | |
575 | rb_socketpair(int family, int sock_type, int proto, rb_fde_t **F1, rb_fde_t **F2, const char *note) | |
576 | { | |
e49147e5 | 577 | rb_platform_fd_t nfd[2]; |
db137867 AC |
578 | if(number_fd >= rb_maxconnections) |
579 | { | |
580 | errno = ENFILE; | |
581 | return -1; | |
582 | } | |
583 | ||
3202e249 | 584 | #ifdef HAVE_SOCKETPAIR |
db137867 AC |
585 | if(socketpair(family, sock_type, proto, nfd)) |
586 | #else | |
3202e249 VY |
587 | if(sock_type == SOCK_DGRAM) |
588 | { | |
589 | return rb_inet_socketpair_udp(F1, F2); | |
590 | } | |
591 | ||
592 | if(rb_inet_socketpair(AF_INET, sock_type, proto, nfd)) | |
db137867 AC |
593 | #endif |
594 | return -1; | |
595 | ||
596 | rb_fd_hack(&nfd[0]); | |
597 | rb_fd_hack(&nfd[1]); | |
598 | ||
599 | *F1 = rb_open(nfd[0], RB_FD_SOCKET, note); | |
600 | *F2 = rb_open(nfd[1], RB_FD_SOCKET, note); | |
601 | ||
602 | if(*F1 == NULL) | |
603 | { | |
604 | if(*F2 != NULL) | |
605 | rb_close(*F2); | |
606 | return -1; | |
607 | } | |
608 | ||
609 | if(*F2 == NULL) | |
610 | { | |
611 | rb_close(*F1); | |
612 | return -1; | |
613 | } | |
614 | ||
615 | /* Set the socket non-blocking, and other wonderful bits */ | |
c2ac22cc | 616 | if(rb_unlikely(!rb_set_nb(*F1))) |
db137867 AC |
617 | { |
618 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[0], strerror(errno)); | |
619 | rb_close(*F1); | |
620 | rb_close(*F2); | |
621 | return -1; | |
622 | } | |
623 | ||
c2ac22cc | 624 | if(rb_unlikely(!rb_set_nb(*F2))) |
db137867 AC |
625 | { |
626 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", nfd[1], strerror(errno)); | |
627 | rb_close(*F1); | |
628 | rb_close(*F2); | |
629 | return -1; | |
630 | } | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
635 | ||
636 | int | |
637 | rb_pipe(rb_fde_t **F1, rb_fde_t **F2, const char *desc) | |
638 | { | |
3202e249 | 639 | #ifndef _WIN32 |
dc7e6b42 | 640 | rb_platform_fd_t fd[2]; |
db137867 AC |
641 | if(number_fd >= rb_maxconnections) |
642 | { | |
643 | errno = ENFILE; | |
644 | return -1; | |
645 | } | |
646 | if(pipe(fd) == -1) | |
647 | return -1; | |
648 | rb_fd_hack(&fd[0]); | |
649 | rb_fd_hack(&fd[1]); | |
650 | *F1 = rb_open(fd[0], RB_FD_PIPE, desc); | |
651 | *F2 = rb_open(fd[1], RB_FD_PIPE, desc); | |
652 | ||
c2ac22cc | 653 | if(rb_unlikely(!rb_set_nb(*F1))) |
db137867 AC |
654 | { |
655 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[0], strerror(errno)); | |
656 | rb_close(*F1); | |
657 | rb_close(*F2); | |
658 | return -1; | |
659 | } | |
660 | ||
c2ac22cc | 661 | if(rb_unlikely(!rb_set_nb(*F2))) |
db137867 AC |
662 | { |
663 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd[1], strerror(errno)); | |
664 | rb_close(*F1); | |
665 | rb_close(*F2); | |
666 | return -1; | |
667 | } | |
668 | ||
669 | ||
670 | return 0; | |
671 | #else | |
672 | /* Its not a pipe..but its selectable. I'll take dirty hacks | |
673 | * for $500 Alex. | |
674 | */ | |
3202e249 | 675 | return rb_socketpair(AF_INET, SOCK_STREAM, 0, F1, F2, desc); |
db137867 AC |
676 | #endif |
677 | } | |
678 | ||
679 | /* | |
680 | * rb_socket() - open a socket | |
681 | * | |
682 | * This is a highly highly cut down version of squid's rb_open() which | |
683 | * for the most part emulates socket(), *EXCEPT* it fails if we're about | |
684 | * to run out of file descriptors. | |
685 | */ | |
686 | rb_fde_t * | |
687 | rb_socket(int family, int sock_type, int proto, const char *note) | |
688 | { | |
689 | rb_fde_t *F; | |
dc7e6b42 | 690 | rb_platform_fd_t fd; |
db137867 | 691 | /* First, make sure we aren't going to run out of file descriptors */ |
c2ac22cc | 692 | if(rb_unlikely(number_fd >= rb_maxconnections)) |
db137867 AC |
693 | { |
694 | errno = ENFILE; | |
695 | return NULL; | |
696 | } | |
697 | ||
698 | /* | |
699 | * Next, we try to open the socket. We *should* drop the reserved FD | |
700 | * limit if/when we get an error, but we can deal with that later. | |
701 | * XXX !!! -- adrian | |
702 | */ | |
703 | fd = socket(family, sock_type, proto); | |
704 | rb_fd_hack(&fd); | |
c2ac22cc | 705 | if(rb_unlikely(fd < 0)) |
db137867 AC |
706 | return NULL; /* errno will be passed through, yay.. */ |
707 | ||
708 | #if defined(RB_IPV6) && defined(IPV6_V6ONLY) | |
55abcbb2 | 709 | /* |
db137867 AC |
710 | * Make sure we can take both IPv4 and IPv6 connections |
711 | * on an AF_INET6 socket | |
712 | */ | |
713 | if(family == AF_INET6) | |
714 | { | |
715 | int off = 1; | |
d24856d2 | 716 | if(setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, (void *) &off, sizeof(off)) == -1) |
db137867 AC |
717 | { |
718 | rb_lib_log("rb_socket: Could not set IPV6_V6ONLY option to 1 on FD %d: %s", | |
3202e249 | 719 | fd, strerror(errno)); |
db137867 AC |
720 | close(fd); |
721 | return NULL; | |
722 | } | |
723 | } | |
724 | #endif | |
725 | ||
726 | F = rb_open(fd, RB_FD_SOCKET, note); | |
727 | if(F == NULL) | |
a9fb3ed0 | 728 | { |
3202e249 VY |
729 | rb_lib_log("rb_socket: rb_open returns NULL on FD %d: %s, closing fd", fd, |
730 | strerror(errno)); | |
a9fb3ed0 | 731 | close(fd); |
db137867 | 732 | return NULL; |
a9fb3ed0 | 733 | } |
db137867 | 734 | /* Set the socket non-blocking, and other wonderful bits */ |
c2ac22cc | 735 | if(rb_unlikely(!rb_set_nb(F))) |
db137867 AC |
736 | { |
737 | rb_lib_log("rb_open: Couldn't set FD %d non blocking: %s", fd, strerror(errno)); | |
738 | rb_close(F); | |
739 | return NULL; | |
740 | } | |
741 | ||
742 | return F; | |
743 | } | |
744 | ||
745 | /* | |
746 | * If a sockaddr_storage is AF_INET6 but is a mapped IPv4 | |
747 | * socket manged the sockaddr. | |
748 | */ | |
749 | #ifdef RB_IPV6 | |
750 | static void | |
751 | mangle_mapped_sockaddr(struct sockaddr *in) | |
752 | { | |
3202e249 | 753 | struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)in; |
db137867 AC |
754 | |
755 | if(in->sa_family == AF_INET) | |
756 | return; | |
757 | ||
758 | if(in->sa_family == AF_INET6 && IN6_IS_ADDR_V4MAPPED(&in6->sin6_addr)) | |
759 | { | |
760 | struct sockaddr_in in4; | |
761 | memset(&in4, 0, sizeof(struct sockaddr_in)); | |
762 | in4.sin_family = AF_INET; | |
763 | in4.sin_port = in6->sin6_port; | |
3202e249 | 764 | in4.sin_addr.s_addr = ((uint32_t *)&in6->sin6_addr)[3]; |
db137867 AC |
765 | memcpy(in, &in4, sizeof(struct sockaddr_in)); |
766 | } | |
767 | return; | |
768 | } | |
769 | #endif | |
770 | ||
771 | /* | |
772 | * rb_listen() - listen on a port | |
773 | */ | |
774 | int | |
aa4737a0 | 775 | rb_listen(rb_fde_t *F, int backlog, int defer_accept) |
db137867 | 776 | { |
77cb59b3 AC |
777 | int result; |
778 | ||
3202e249 | 779 | F->type = RB_FD_SOCKET | RB_FD_LISTEN; |
77cb59b3 AC |
780 | result = listen(F->fd, backlog); |
781 | ||
782 | #ifdef TCP_DEFER_ACCEPT | |
aa4737a0 | 783 | if (defer_accept && !result) |
77cb59b3 | 784 | { |
e053adc8 | 785 | (void)setsockopt(F->fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &backlog, sizeof(int)); |
77cb59b3 AC |
786 | } |
787 | #endif | |
797a29f3 JT |
788 | #ifdef SO_ACCEPTFILTER |
789 | if (defer_accept && !result) | |
790 | { | |
791 | struct accept_filter_arg afa; | |
792 | ||
793 | memset(&afa, '\0', sizeof afa); | |
794 | rb_strlcpy(afa.af_name, "dataready", sizeof afa.af_name); | |
795 | (void)setsockopt(F->fd, SOL_SOCKET, SO_ACCEPTFILTER, &afa, | |
796 | sizeof afa); | |
797 | } | |
798 | #endif | |
77cb59b3 AC |
799 | |
800 | return result; | |
db137867 AC |
801 | } |
802 | ||
803 | void | |
804 | rb_fdlist_init(int closeall, int maxfds, size_t heapsize) | |
805 | { | |
806 | static int initialized = 0; | |
3202e249 | 807 | #ifdef _WIN32 |
db137867 AC |
808 | WSADATA wsaData; |
809 | int err; | |
810 | int vers = MAKEWORD(2, 0); | |
3202e249 | 811 | |
db137867 AC |
812 | err = WSAStartup(vers, &wsaData); |
813 | if(err != 0) | |
814 | { | |
815 | rb_lib_die("WSAStartup failed"); | |
816 | } | |
817 | ||
818 | #endif | |
819 | if(!initialized) | |
820 | { | |
821 | rb_maxconnections = maxfds; | |
822 | if(closeall) | |
823 | rb_close_all(); | |
824 | /* Since we're doing this once .. */ | |
825 | initialized = 1; | |
826 | } | |
827 | fd_heap = rb_bh_create(sizeof(rb_fde_t), heapsize, "librb_fd_heap"); | |
828 | ||
829 | } | |
830 | ||
831 | ||
832 | /* Called to open a given filedescriptor */ | |
833 | rb_fde_t * | |
dc7e6b42 | 834 | rb_open(rb_platform_fd_t fd, uint8_t type, const char *desc) |
db137867 | 835 | { |
a9fb3ed0 | 836 | rb_fde_t *F; |
db137867 AC |
837 | lrb_assert(fd >= 0); |
838 | ||
a9fb3ed0 VY |
839 | F = add_fd(fd); |
840 | ||
841 | lrb_assert(!IsFDOpen(F)); | |
c2ac22cc | 842 | if(rb_unlikely(IsFDOpen(F))) |
db137867 | 843 | { |
a9fb3ed0 VY |
844 | const char *fdesc; |
845 | if(F != NULL && F->desc != NULL) | |
846 | fdesc = F->desc; | |
847 | else | |
848 | fdesc = "NULL"; | |
3202e249 | 849 | rb_lib_log("Trying to rb_open an already open FD: %d desc: %s", fd, fdesc); |
db137867 AC |
850 | return NULL; |
851 | } | |
db137867 AC |
852 | F->fd = fd; |
853 | F->type = type; | |
854 | SetFDOpen(F); | |
855 | ||
856 | if(desc != NULL) | |
857 | F->desc = rb_strndup(desc, FD_DESC_SZ); | |
858 | number_fd++; | |
859 | return F; | |
860 | } | |
861 | ||
862 | ||
863 | /* Called to close a given filedescriptor */ | |
864 | void | |
865 | rb_close(rb_fde_t *F) | |
866 | { | |
867 | int type, fd; | |
3202e249 | 868 | |
db137867 AC |
869 | if(F == NULL) |
870 | return; | |
871 | ||
872 | fd = F->fd; | |
3202e249 | 873 | type = F->type; |
db137867 AC |
874 | lrb_assert(IsFDOpen(F)); |
875 | ||
876 | lrb_assert(!(type & RB_FD_FILE)); | |
c2ac22cc | 877 | if(rb_unlikely(type & RB_FD_FILE)) |
db137867 AC |
878 | { |
879 | lrb_assert(F->read_handler == NULL); | |
880 | lrb_assert(F->write_handler == NULL); | |
881 | } | |
882 | rb_setselect(F, RB_SELECT_WRITE | RB_SELECT_READ, NULL, NULL); | |
883 | rb_settimeout(F, 0, NULL, NULL); | |
884 | rb_free(F->accept); | |
885 | rb_free(F->connect); | |
886 | rb_free(F->desc); | |
887 | #ifdef HAVE_SSL | |
888 | if(type & RB_FD_SSL) | |
889 | { | |
890 | rb_ssl_shutdown(F); | |
891 | } | |
892 | #endif /* HAVE_SSL */ | |
893 | if(IsFDOpen(F)) | |
894 | { | |
895 | remove_fd(F); | |
896 | ClearFDOpen(F); | |
897 | } | |
8a29e7cd SA |
898 | |
899 | if(type & RB_FD_LISTEN) | |
900 | shutdown(fd, SHUT_RDWR); | |
db137867 AC |
901 | } |
902 | ||
903 | ||
904 | /* | |
905 | * rb_dump_fd() - dump the list of active filedescriptors | |
906 | */ | |
907 | void | |
908 | rb_dump_fd(DUMPCB * cb, void *data) | |
909 | { | |
910 | static const char *empty = ""; | |
911 | rb_dlink_node *ptr; | |
912 | rb_dlink_list *bucket; | |
913 | rb_fde_t *F; | |
914 | unsigned int i; | |
915 | ||
916 | for(i = 0; i < RB_FD_HASH_SIZE; i++) | |
917 | { | |
918 | bucket = &rb_fd_table[i]; | |
919 | ||
920 | if(rb_dlink_list_length(bucket) <= 0) | |
921 | continue; | |
922 | ||
923 | RB_DLINK_FOREACH(ptr, bucket->head) | |
924 | { | |
925 | F = ptr->data; | |
926 | if(F == NULL || !IsFDOpen(F)) | |
927 | continue; | |
928 | ||
929 | cb(F->fd, F->desc ? F->desc : empty, data); | |
930 | } | |
931 | } | |
932 | } | |
933 | ||
934 | /* | |
935 | * rb_note() - set the fd note | |
936 | * | |
937 | * Note: must be careful not to overflow rb_fd_table[fd].desc when | |
938 | * calling. | |
939 | */ | |
940 | void | |
941 | rb_note(rb_fde_t *F, const char *string) | |
942 | { | |
943 | if(F == NULL) | |
944 | return; | |
945 | ||
946 | rb_free(F->desc); | |
947 | F->desc = rb_strndup(string, FD_DESC_SZ); | |
948 | } | |
949 | ||
950 | void | |
a9fb3ed0 | 951 | rb_set_type(rb_fde_t *F, uint8_t type) |
db137867 AC |
952 | { |
953 | /* if the caller is calling this, lets assume they have a clue */ | |
954 | F->type = type; | |
955 | return; | |
956 | } | |
957 | ||
a9fb3ed0 | 958 | uint8_t |
db137867 AC |
959 | rb_get_type(rb_fde_t *F) |
960 | { | |
961 | return F->type; | |
962 | } | |
963 | ||
3202e249 | 964 | int |
db137867 AC |
965 | rb_fd_ssl(rb_fde_t *F) |
966 | { | |
967 | if(F == NULL) | |
968 | return 0; | |
969 | if(F->type & RB_FD_SSL) | |
970 | return 1; | |
971 | return 0; | |
972 | } | |
973 | ||
b1f7e409 | 974 | rb_platform_fd_t |
db137867 AC |
975 | rb_get_fd(rb_fde_t *F) |
976 | { | |
977 | if(F == NULL) | |
978 | return -1; | |
3202e249 | 979 | return (F->fd); |
db137867 AC |
980 | } |
981 | ||
982 | rb_fde_t * | |
dc7e6b42 | 983 | rb_get_fde(rb_platform_fd_t fd) |
db137867 AC |
984 | { |
985 | return rb_find_fd(fd); | |
986 | } | |
987 | ||
988 | ssize_t | |
989 | rb_read(rb_fde_t *F, void *buf, int count) | |
990 | { | |
ba1721d1 | 991 | ssize_t ret; |
db137867 AC |
992 | if(F == NULL) |
993 | return 0; | |
3202e249 | 994 | |
55abcbb2 KB |
995 | /* This needs to be *before* RB_FD_SOCKET otherwise you'll process |
996 | * an SSL socket as a regular socket | |
db137867 AC |
997 | */ |
998 | #ifdef HAVE_SSL | |
999 | if(F->type & RB_FD_SSL) | |
1000 | { | |
1001 | return rb_ssl_read(F, buf, count); | |
3202e249 | 1002 | } |
db137867 AC |
1003 | #endif |
1004 | if(F->type & RB_FD_SOCKET) | |
1005 | { | |
1006 | ret = recv(F->fd, buf, count, 0); | |
1007 | if(ret < 0) | |
1008 | { | |
1009 | rb_get_errno(); | |
1010 | } | |
1011 | return ret; | |
1012 | } | |
1013 | ||
1014 | ||
1015 | /* default case */ | |
1016 | return read(F->fd, buf, count); | |
1017 | } | |
1018 | ||
1019 | ||
1020 | ssize_t | |
1021 | rb_write(rb_fde_t *F, const void *buf, int count) | |
1022 | { | |
ba1721d1 | 1023 | ssize_t ret; |
db137867 AC |
1024 | if(F == NULL) |
1025 | return 0; | |
1026 | ||
1027 | #ifdef HAVE_SSL | |
1028 | if(F->type & RB_FD_SSL) | |
1029 | { | |
1030 | return rb_ssl_write(F, buf, count); | |
3202e249 | 1031 | } |
db137867 AC |
1032 | #endif |
1033 | if(F->type & RB_FD_SOCKET) | |
1034 | { | |
1035 | ret = send(F->fd, buf, count, MSG_NOSIGNAL); | |
3202e249 VY |
1036 | if(ret < 0) |
1037 | { | |
db137867 AC |
1038 | rb_get_errno(); |
1039 | } | |
1040 | return ret; | |
1041 | } | |
1042 | ||
1043 | return write(F->fd, buf, count); | |
1044 | } | |
1045 | ||
1046 | #if defined(HAVE_SSL) || defined(WIN32) || !defined(HAVE_WRITEV) | |
1047 | static ssize_t | |
1048 | rb_fake_writev(rb_fde_t *F, const struct rb_iovec *vp, size_t vpcount) | |
1049 | { | |
ba1721d1 | 1050 | ssize_t count = 0; |
db137867 | 1051 | |
3202e249 | 1052 | while(vpcount-- > 0) |
db137867 | 1053 | { |
ba1721d1 | 1054 | ssize_t written = rb_write(F, vp->iov_base, vp->iov_len); |
db137867 | 1055 | |
3202e249 | 1056 | if(written <= 0) |
db137867 AC |
1057 | { |
1058 | if(count > 0) | |
1059 | return count; | |
1060 | else | |
1061 | return written; | |
1062 | } | |
1063 | count += written; | |
1064 | vp++; | |
1065 | } | |
1066 | return (count); | |
1067 | } | |
1068 | #endif | |
1069 | ||
1070 | #if defined(WIN32) || !defined(HAVE_WRITEV) | |
1071 | ssize_t | |
3202e249 | 1072 | rb_writev(rb_fde_t *F, struct rb_iovec * vecount, int count) |
db137867 AC |
1073 | { |
1074 | return rb_fake_writev(F, vecount, count); | |
1075 | } | |
1076 | ||
1077 | #else | |
1078 | ssize_t | |
3202e249 | 1079 | rb_writev(rb_fde_t *F, struct rb_iovec * vector, int count) |
db137867 | 1080 | { |
3202e249 VY |
1081 | if(F == NULL) |
1082 | { | |
db137867 AC |
1083 | errno = EBADF; |
1084 | return -1; | |
1085 | } | |
1086 | #ifdef HAVE_SSL | |
1087 | if(F->type & RB_FD_SSL) | |
1088 | { | |
3202e249 | 1089 | return rb_fake_writev(F, vector, count); |
db137867 AC |
1090 | } |
1091 | #endif /* HAVE_SSL */ | |
1092 | #ifdef HAVE_SENDMSG | |
1093 | if(F->type & RB_FD_SOCKET) | |
1094 | { | |
1095 | struct msghdr msg; | |
1096 | memset(&msg, 0, sizeof(msg)); | |
1097 | msg.msg_iov = (struct iovec *)vector; | |
1098 | msg.msg_iovlen = count; | |
1099 | return sendmsg(F->fd, &msg, MSG_NOSIGNAL); | |
3202e249 | 1100 | } |
db137867 AC |
1101 | #endif /* HAVE_SENDMSG */ |
1102 | return writev(F->fd, (struct iovec *)vector, count); | |
1103 | ||
1104 | } | |
3202e249 | 1105 | #endif |
db137867 AC |
1106 | |
1107 | ||
55abcbb2 | 1108 | /* |
db137867 AC |
1109 | * From: Thomas Helvey <tomh@inxpress.net> |
1110 | */ | |
1111 | static const char *IpQuadTab[] = { | |
1112 | "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", | |
1113 | "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", | |
1114 | "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", | |
1115 | "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", | |
1116 | "40", "41", "42", "43", "44", "45", "46", "47", "48", "49", | |
1117 | "50", "51", "52", "53", "54", "55", "56", "57", "58", "59", | |
1118 | "60", "61", "62", "63", "64", "65", "66", "67", "68", "69", | |
1119 | "70", "71", "72", "73", "74", "75", "76", "77", "78", "79", | |
1120 | "80", "81", "82", "83", "84", "85", "86", "87", "88", "89", | |
1121 | "90", "91", "92", "93", "94", "95", "96", "97", "98", "99", | |
1122 | "100", "101", "102", "103", "104", "105", "106", "107", "108", "109", | |
1123 | "110", "111", "112", "113", "114", "115", "116", "117", "118", "119", | |
1124 | "120", "121", "122", "123", "124", "125", "126", "127", "128", "129", | |
1125 | "130", "131", "132", "133", "134", "135", "136", "137", "138", "139", | |
1126 | "140", "141", "142", "143", "144", "145", "146", "147", "148", "149", | |
1127 | "150", "151", "152", "153", "154", "155", "156", "157", "158", "159", | |
1128 | "160", "161", "162", "163", "164", "165", "166", "167", "168", "169", | |
1129 | "170", "171", "172", "173", "174", "175", "176", "177", "178", "179", | |
1130 | "180", "181", "182", "183", "184", "185", "186", "187", "188", "189", | |
1131 | "190", "191", "192", "193", "194", "195", "196", "197", "198", "199", | |
1132 | "200", "201", "202", "203", "204", "205", "206", "207", "208", "209", | |
1133 | "210", "211", "212", "213", "214", "215", "216", "217", "218", "219", | |
1134 | "220", "221", "222", "223", "224", "225", "226", "227", "228", "229", | |
1135 | "230", "231", "232", "233", "234", "235", "236", "237", "238", "239", | |
1136 | "240", "241", "242", "243", "244", "245", "246", "247", "248", "249", | |
1137 | "250", "251", "252", "253", "254", "255" | |
1138 | }; | |
1139 | ||
1140 | /* | |
1141 | * inetntoa - in_addr to string | |
1142 | * changed name to remove collision possibility and | |
1143 | * so behaviour is guaranteed to take a pointer arg. | |
1144 | * -avalon 23/11/92 | |
1145 | * inet_ntoa -- returned the dotted notation of a given | |
1146 | * internet number | |
1147 | * argv 11/90). | |
1148 | * inet_ntoa -- its broken on some Ultrix/Dynix too. -avalon | |
1149 | */ | |
1150 | ||
1151 | static const char * | |
1152 | inetntoa(const char *in) | |
1153 | { | |
1154 | static char buf[16]; | |
1155 | char *bufptr = buf; | |
3202e249 | 1156 | const unsigned char *a = (const unsigned char *)in; |
db137867 AC |
1157 | const char *n; |
1158 | ||
1159 | n = IpQuadTab[*a++]; | |
3202e249 | 1160 | while(*n) |
db137867 AC |
1161 | *bufptr++ = *n++; |
1162 | *bufptr++ = '.'; | |
1163 | n = IpQuadTab[*a++]; | |
3202e249 | 1164 | while(*n) |
db137867 AC |
1165 | *bufptr++ = *n++; |
1166 | *bufptr++ = '.'; | |
1167 | n = IpQuadTab[*a++]; | |
3202e249 | 1168 | while(*n) |
db137867 AC |
1169 | *bufptr++ = *n++; |
1170 | *bufptr++ = '.'; | |
1171 | n = IpQuadTab[*a]; | |
3202e249 | 1172 | while(*n) |
db137867 AC |
1173 | *bufptr++ = *n++; |
1174 | *bufptr = '\0'; | |
1175 | return buf; | |
1176 | } | |
1177 | ||
db137867 AC |
1178 | /* |
1179 | * WARNING: Don't even consider trying to compile this on a system where | |
1180 | * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. | |
1181 | */ | |
1182 | ||
3202e249 | 1183 | static const char *inet_ntop4(const unsigned char *src, char *dst, unsigned int size); |
db137867 | 1184 | #ifdef RB_IPV6 |
3202e249 | 1185 | static const char *inet_ntop6(const unsigned char *src, char *dst, unsigned int size); |
db137867 AC |
1186 | #endif |
1187 | ||
1188 | /* const char * | |
1189 | * inet_ntop4(src, dst, size) | |
1190 | * format an IPv4 address | |
1191 | * return: | |
1192 | * `dst' (as a const) | |
1193 | * notes: | |
1194 | * (1) uses no statics | |
1195 | * (2) takes a unsigned char* not an in_addr as input | |
1196 | * author: | |
1197 | * Paul Vixie, 1996. | |
1198 | */ | |
1199 | static const char * | |
1200 | inet_ntop4(const unsigned char *src, char *dst, unsigned int size) | |
1201 | { | |
1202 | if(size < 16) | |
1203 | return NULL; | |
86510a73 | 1204 | return strcpy(dst, inetntoa((const char *)src)); |
db137867 AC |
1205 | } |
1206 | ||
1207 | /* const char * | |
1208 | * inet_ntop6(src, dst, size) | |
1209 | * convert IPv6 binary address into presentation (printable) format | |
1210 | * author: | |
1211 | * Paul Vixie, 1996. | |
1212 | */ | |
1213 | #ifdef RB_IPV6 | |
1214 | static const char * | |
1215 | inet_ntop6(const unsigned char *src, char *dst, unsigned int size) | |
1216 | { | |
1217 | /* | |
1218 | * Note that int32_t and int16_t need only be "at least" large enough | |
1219 | * to contain a value of the specified size. On some systems, like | |
1220 | * Crays, there is no such thing as an integer variable with 16 bits. | |
1221 | * Keep this in mind if you think this function should have been coded | |
1222 | * to use pointer overlays. All the world's not a VAX. | |
1223 | */ | |
1224 | char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp; | |
1225 | struct | |
1226 | { | |
1227 | int base, len; | |
1228 | } | |
1229 | best, cur; | |
1230 | unsigned int words[IN6ADDRSZ / INT16SZ]; | |
1231 | int i; | |
1232 | ||
1233 | /* | |
1234 | * Preprocess: | |
1235 | * Copy the input (bytewise) array into a wordwise array. | |
1236 | * Find the longest run of 0x00's in src[] for :: shorthanding. | |
1237 | */ | |
1238 | memset(words, '\0', sizeof words); | |
3202e249 | 1239 | for(i = 0; i < IN6ADDRSZ; i += 2) |
db137867 AC |
1240 | words[i / 2] = (src[i] << 8) | src[i + 1]; |
1241 | best.base = -1; | |
1242 | best.len = 0; | |
1243 | cur.base = -1; | |
1244 | cur.len = 0; | |
3202e249 | 1245 | for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) |
db137867 AC |
1246 | { |
1247 | if(words[i] == 0) | |
1248 | { | |
1249 | if(cur.base == -1) | |
1250 | cur.base = i, cur.len = 1; | |
1251 | else | |
1252 | cur.len++; | |
1253 | } | |
1254 | else | |
1255 | { | |
1256 | if(cur.base != -1) | |
1257 | { | |
1258 | if(best.base == -1 || cur.len > best.len) | |
1259 | best = cur; | |
1260 | cur.base = -1; | |
1261 | } | |
1262 | } | |
1263 | } | |
1264 | if(cur.base != -1) | |
1265 | { | |
1266 | if(best.base == -1 || cur.len > best.len) | |
1267 | best = cur; | |
1268 | } | |
1269 | if(best.base != -1 && best.len < 2) | |
1270 | best.base = -1; | |
1271 | ||
1272 | /* | |
1273 | * Format the result. | |
1274 | */ | |
1275 | tp = tmp; | |
3202e249 | 1276 | for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) |
db137867 AC |
1277 | { |
1278 | /* Are we inside the best run of 0x00's? */ | |
1279 | if(best.base != -1 && i >= best.base && i < (best.base + best.len)) | |
1280 | { | |
1281 | if(i == best.base) | |
1282 | { | |
1283 | if(i == 0) | |
1284 | *tp++ = '0'; | |
1285 | *tp++ = ':'; | |
1286 | } | |
1287 | continue; | |
1288 | } | |
1289 | /* Are we following an initial run of 0x00s or any real hex? */ | |
1290 | if(i != 0) | |
1291 | *tp++ = ':'; | |
1292 | /* Is this address an encapsulated IPv4? */ | |
1293 | if(i == 6 && best.base == 0 && | |
1294 | (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) | |
1295 | { | |
1296 | if(!inet_ntop4(src + 12, tp, sizeof tmp - (tp - tmp))) | |
1297 | return (NULL); | |
1298 | tp += strlen(tp); | |
1299 | break; | |
1300 | } | |
5203cba5 | 1301 | tp += sprintf(tp, "%x", words[i]); |
db137867 AC |
1302 | } |
1303 | /* Was it a trailing run of 0x00's? */ | |
1304 | if(best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) | |
1305 | *tp++ = ':'; | |
1306 | *tp++ = '\0'; | |
1307 | ||
1308 | /* | |
1309 | * Check for overflow, copy, and we're done. | |
1310 | */ | |
1311 | ||
3202e249 | 1312 | if((unsigned int)(tp - tmp) > size) |
db137867 AC |
1313 | { |
1314 | return (NULL); | |
1315 | } | |
86510a73 | 1316 | return memcpy(dst, tmp, tp - tmp); |
db137867 AC |
1317 | } |
1318 | #endif | |
1319 | ||
1320 | int | |
1321 | rb_inet_pton_sock(const char *src, struct sockaddr *dst) | |
1322 | { | |
3202e249 | 1323 | if(rb_inet_pton(AF_INET, src, &((struct sockaddr_in *)dst)->sin_addr)) |
db137867 | 1324 | { |
d86692fa | 1325 | SET_SS_FAMILY(dst, AF_INET); |
1315fd59 | 1326 | SET_SS_PORT(dst, 0); |
db137867 AC |
1327 | SET_SS_LEN(dst, sizeof(struct sockaddr_in)); |
1328 | return 1; | |
1329 | } | |
1330 | #ifdef RB_IPV6 | |
3202e249 | 1331 | else if(rb_inet_pton(AF_INET6, src, &((struct sockaddr_in6 *)dst)->sin6_addr)) |
db137867 | 1332 | { |
d86692fa | 1333 | SET_SS_FAMILY(dst, AF_INET6); |
1315fd59 | 1334 | SET_SS_PORT(dst, 0); |
db137867 AC |
1335 | SET_SS_LEN(dst, sizeof(struct sockaddr_in6)); |
1336 | return 1; | |
1337 | } | |
1338 | #endif | |
1339 | return 0; | |
1340 | } | |
1341 | ||
1342 | const char * | |
1343 | rb_inet_ntop_sock(struct sockaddr *src, char *dst, unsigned int size) | |
1344 | { | |
1345 | switch (src->sa_family) | |
1346 | { | |
1347 | case AF_INET: | |
3202e249 | 1348 | return (rb_inet_ntop(AF_INET, &((struct sockaddr_in *)src)->sin_addr, dst, size)); |
db137867 AC |
1349 | #ifdef RB_IPV6 |
1350 | case AF_INET6: | |
3202e249 VY |
1351 | return (rb_inet_ntop |
1352 | (AF_INET6, &((struct sockaddr_in6 *)src)->sin6_addr, dst, size)); | |
db137867 AC |
1353 | #endif |
1354 | default: | |
1355 | return NULL; | |
db137867 AC |
1356 | } |
1357 | } | |
1358 | ||
1359 | /* char * | |
1360 | * rb_inet_ntop(af, src, dst, size) | |
1361 | * convert a network format address to presentation format. | |
1362 | * return: | |
1363 | * pointer to presentation format address (`dst'), or NULL (see errno). | |
1364 | * author: | |
1365 | * Paul Vixie, 1996. | |
1366 | */ | |
1367 | const char * | |
1368 | rb_inet_ntop(int af, const void *src, char *dst, unsigned int size) | |
1369 | { | |
1370 | switch (af) | |
1371 | { | |
1372 | case AF_INET: | |
1373 | return (inet_ntop4(src, dst, size)); | |
1374 | #ifdef RB_IPV6 | |
1375 | case AF_INET6: | |
3202e249 VY |
1376 | if(IN6_IS_ADDR_V4MAPPED((const struct in6_addr *)src) || |
1377 | IN6_IS_ADDR_V4COMPAT((const struct in6_addr *)src)) | |
db137867 | 1378 | return (inet_ntop4 |
3202e249 VY |
1379 | ((const unsigned char *)&((const struct in6_addr *)src)-> |
1380 | s6_addr[12], dst, size)); | |
db137867 AC |
1381 | else |
1382 | return (inet_ntop6(src, dst, size)); | |
1383 | ||
1384 | ||
1385 | #endif | |
1386 | default: | |
1387 | return (NULL); | |
1388 | } | |
1389 | /* NOTREACHED */ | |
1390 | } | |
1391 | ||
1392 | /* | |
1393 | * WARNING: Don't even consider trying to compile this on a system where | |
1394 | * sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX. | |
1395 | */ | |
1396 | ||
1397 | /* int | |
1398 | * rb_inet_pton(af, src, dst) | |
1399 | * convert from presentation format (which usually means ASCII printable) | |
1400 | * to network format (which is usually some kind of binary format). | |
1401 | * return: | |
1402 | * 1 if the address was valid for the specified address family | |
1403 | * 0 if the address wasn't valid (`dst' is untouched in this case) | |
1404 | * -1 if some other error occurred (`dst' is untouched in this case, too) | |
1405 | * author: | |
1406 | * Paul Vixie, 1996. | |
1407 | */ | |
1408 | ||
1409 | /* int | |
1410 | * inet_pton4(src, dst) | |
1411 | * like inet_aton() but without all the hexadecimal and shorthand. | |
1412 | * return: | |
1413 | * 1 if `src' is a valid dotted quad, else 0. | |
1414 | * notice: | |
1415 | * does not touch `dst' unless it's returning 1. | |
1416 | * author: | |
1417 | * Paul Vixie, 1996. | |
1418 | */ | |
1419 | static int | |
1420 | inet_pton4(const char *src, unsigned char *dst) | |
1421 | { | |
1422 | int saw_digit, octets, ch; | |
1423 | unsigned char tmp[INADDRSZ], *tp; | |
1424 | ||
1425 | saw_digit = 0; | |
1426 | octets = 0; | |
1427 | *(tp = tmp) = 0; | |
3202e249 | 1428 | while((ch = *src++) != '\0') |
db137867 AC |
1429 | { |
1430 | ||
1431 | if(ch >= '0' && ch <= '9') | |
1432 | { | |
1433 | unsigned int new = *tp * 10 + (ch - '0'); | |
1434 | ||
1435 | if(new > 255) | |
1436 | return (0); | |
1437 | *tp = new; | |
1438 | if(!saw_digit) | |
1439 | { | |
1440 | if(++octets > 4) | |
1441 | return (0); | |
1442 | saw_digit = 1; | |
1443 | } | |
1444 | } | |
1445 | else if(ch == '.' && saw_digit) | |
1446 | { | |
1447 | if(octets == 4) | |
1448 | return (0); | |
1449 | *++tp = 0; | |
1450 | saw_digit = 0; | |
1451 | } | |
1452 | else | |
1453 | return (0); | |
1454 | } | |
1455 | if(octets < 4) | |
1456 | return (0); | |
1457 | memcpy(dst, tmp, INADDRSZ); | |
1458 | return (1); | |
1459 | } | |
1460 | ||
1461 | #ifdef RB_IPV6 | |
1462 | /* int | |
1463 | * inet_pton6(src, dst) | |
1464 | * convert presentation level address to network order binary form. | |
1465 | * return: | |
1466 | * 1 if `src' is a valid [RFC1884 2.2] address, else 0. | |
1467 | * notice: | |
1468 | * (1) does not touch `dst' unless it's returning 1. | |
1469 | * (2) :: in a full address is silently ignored. | |
1470 | * credit: | |
1471 | * inspired by Mark Andrews. | |
1472 | * author: | |
1473 | * Paul Vixie, 1996. | |
1474 | */ | |
1475 | ||
1476 | static int | |
1477 | inet_pton6(const char *src, unsigned char *dst) | |
1478 | { | |
1479 | static const char xdigits[] = "0123456789abcdef"; | |
1480 | unsigned char tmp[IN6ADDRSZ], *tp, *endp, *colonp; | |
1481 | const char *curtok; | |
1482 | int ch, saw_xdigit; | |
1483 | unsigned int val; | |
1484 | ||
1485 | tp = memset(tmp, '\0', IN6ADDRSZ); | |
1486 | endp = tp + IN6ADDRSZ; | |
1487 | colonp = NULL; | |
1488 | /* Leading :: requires some special handling. */ | |
1489 | if(*src == ':') | |
1490 | if(*++src != ':') | |
1491 | return (0); | |
1492 | curtok = src; | |
1493 | saw_xdigit = 0; | |
1494 | val = 0; | |
29c92cf9 | 1495 | while((ch = tolower((unsigned char)*src++)) != '\0') |
db137867 AC |
1496 | { |
1497 | const char *pch; | |
1498 | ||
1499 | pch = strchr(xdigits, ch); | |
1500 | if(pch != NULL) | |
1501 | { | |
1502 | val <<= 4; | |
1503 | val |= (pch - xdigits); | |
1504 | if(val > 0xffff) | |
1505 | return (0); | |
1506 | saw_xdigit = 1; | |
1507 | continue; | |
1508 | } | |
1509 | if(ch == ':') | |
1510 | { | |
1511 | curtok = src; | |
1512 | if(!saw_xdigit) | |
1513 | { | |
1514 | if(colonp) | |
1515 | return (0); | |
1516 | colonp = tp; | |
1517 | continue; | |
1518 | } | |
1519 | else if(*src == '\0') | |
1520 | { | |
1521 | return (0); | |
1522 | } | |
1523 | if(tp + INT16SZ > endp) | |
1524 | return (0); | |
3202e249 VY |
1525 | *tp++ = (unsigned char)(val >> 8) & 0xff; |
1526 | *tp++ = (unsigned char)val & 0xff; | |
db137867 AC |
1527 | saw_xdigit = 0; |
1528 | val = 0; | |
1529 | continue; | |
1530 | } | |
1531 | if(*src != '\0' && ch == '.') | |
1532 | { | |
1533 | if(((tp + INADDRSZ) <= endp) && inet_pton4(curtok, tp) > 0) | |
1534 | { | |
1535 | tp += INADDRSZ; | |
1536 | saw_xdigit = 0; | |
1537 | break; /* '\0' was seen by inet_pton4(). */ | |
1538 | } | |
1539 | } | |
1540 | else | |
1541 | continue; | |
1542 | return (0); | |
1543 | } | |
1544 | if(saw_xdigit) | |
1545 | { | |
1546 | if(tp + INT16SZ > endp) | |
1547 | return (0); | |
3202e249 VY |
1548 | *tp++ = (unsigned char)(val >> 8) & 0xff; |
1549 | *tp++ = (unsigned char)val & 0xff; | |
db137867 AC |
1550 | } |
1551 | if(colonp != NULL) | |
1552 | { | |
1553 | /* | |
1554 | * Since some memmove()'s erroneously fail to handle | |
1555 | * overlapping regions, we'll do the shift by hand. | |
1556 | */ | |
1557 | const int n = tp - colonp; | |
1558 | int i; | |
1559 | ||
1560 | if(tp == endp) | |
1561 | return (0); | |
3202e249 | 1562 | for(i = 1; i <= n; i++) |
db137867 AC |
1563 | { |
1564 | endp[-i] = colonp[n - i]; | |
1565 | colonp[n - i] = 0; | |
1566 | } | |
1567 | tp = endp; | |
1568 | } | |
1569 | if(tp != endp) | |
1570 | return (0); | |
1571 | memcpy(dst, tmp, IN6ADDRSZ); | |
1572 | return (1); | |
1573 | } | |
1574 | #endif | |
1575 | int | |
1576 | rb_inet_pton(int af, const char *src, void *dst) | |
1577 | { | |
1578 | switch (af) | |
1579 | { | |
1580 | case AF_INET: | |
1581 | return (inet_pton4(src, dst)); | |
1582 | #ifdef RB_IPV6 | |
1583 | case AF_INET6: | |
1584 | /* Somebody might have passed as an IPv4 address this is sick but it works */ | |
1585 | if(inet_pton4(src, dst)) | |
1586 | { | |
1587 | char tmp[HOSTIPLEN]; | |
5203cba5 | 1588 | sprintf(tmp, "::ffff:%s", src); |
db137867 AC |
1589 | return (inet_pton6(tmp, dst)); |
1590 | } | |
1591 | else | |
1592 | return (inet_pton6(src, dst)); | |
1593 | #endif | |
1594 | default: | |
1595 | return (-1); | |
1596 | } | |
1597 | /* NOTREACHED */ | |
1598 | } | |
1599 | ||
1600 | ||
1601 | #ifndef HAVE_SOCKETPAIR | |
3202e249 VY |
1602 | |
1603 | /* mostly based on perl's emulation of socketpair udp */ | |
1604 | static int | |
1605 | rb_inet_socketpair_udp(rb_fde_t **newF1, rb_fde_t **newF2) | |
1606 | { | |
1607 | struct sockaddr_in addr[2]; | |
1608 | rb_socklen_t size = sizeof(struct sockaddr_in); | |
1609 | rb_fde_t *F[2]; | |
7dbf237f | 1610 | rb_platform_fd_t fd[2]; |
3202e249 VY |
1611 | int i, got; |
1612 | unsigned short port; | |
030272f3 VY |
1613 | struct timeval wait = { 0, 100000 }; |
1614 | int max; | |
1615 | fd_set rset; | |
1616 | struct sockaddr_in readfrom; | |
1617 | unsigned short buf[2]; | |
1618 | int o_errno; | |
3202e249 VY |
1619 | |
1620 | memset(&addr, 0, sizeof(addr)); | |
1621 | ||
1622 | for(i = 0; i < 2; i++) | |
1623 | { | |
1624 | F[i] = rb_socket(AF_INET, SOCK_DGRAM, 0, "udp socketpair"); | |
1625 | if(F[i] == NULL) | |
1626 | goto failed; | |
1627 | addr[i].sin_family = AF_INET; | |
1628 | addr[i].sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1629 | addr[i].sin_port = 0; | |
1630 | if(bind(rb_get_fd(F[i]), (struct sockaddr *)&addr[i], sizeof(struct sockaddr_in))) | |
1631 | goto failed; | |
1632 | fd[i] = rb_get_fd(F[i]); | |
1633 | } | |
1634 | ||
1635 | for(i = 0; i < 2; i++) | |
1636 | { | |
1637 | if(getsockname(fd[i], (struct sockaddr *)&addr[i], &size)) | |
1638 | goto failed; | |
1639 | if(size != sizeof(struct sockaddr_in)) | |
1640 | goto failed; | |
1641 | if(connect(fd[!i], (struct sockaddr *)&addr[i], sizeof(struct sockaddr_in)) == -1) | |
1642 | goto failed; | |
1643 | } | |
1644 | ||
1645 | for(i = 0; i < 2; i++) | |
1646 | { | |
1647 | port = addr[i].sin_port; | |
1648 | got = rb_write(F[i], &port, sizeof(port)); | |
1649 | if(got != sizeof(port)) | |
1650 | { | |
1651 | if(got == -1) | |
1652 | goto failed; | |
1653 | goto abort_failed; | |
1654 | } | |
1655 | } | |
1656 | ||
030272f3 | 1657 | max = fd[1] > fd[0] ? fd[1] : fd[0]; |
3202e249 VY |
1658 | FD_ZERO(&rset); |
1659 | FD_SET(fd[0], &rset); | |
1660 | FD_SET(fd[1], &rset); | |
1661 | got = select(max + 1, &rset, NULL, NULL, &wait); | |
1662 | if(got != 2 || !FD_ISSET(fd[0], &rset) || !FD_ISSET(fd[1], &rset)) | |
1663 | { | |
1664 | if(got == -1) | |
1665 | goto failed; | |
1666 | goto abort_failed; | |
1667 | } | |
1668 | ||
3202e249 VY |
1669 | for(i = 0; i < 2; i++) |
1670 | { | |
1671 | #ifdef MSG_DONTWAIT | |
1672 | int flag = MSG_DONTWAIT | |
1673 | #else | |
1674 | int flag = 0; | |
1675 | #endif | |
1676 | got = recvfrom(rb_get_fd(F[i]), (char *)&buf, sizeof(buf), flag, | |
1677 | (struct sockaddr *)&readfrom, &size); | |
1678 | if(got == -1) | |
1679 | goto failed; | |
1680 | if(got != sizeof(port) | |
1681 | || size != sizeof(struct sockaddr_in) | |
1682 | || buf[0] != (unsigned short)addr[!i].sin_port | |
1683 | || readfrom.sin_family != addr[!i].sin_family | |
1684 | || readfrom.sin_addr.s_addr != addr[!i].sin_addr.s_addr | |
1685 | || readfrom.sin_port != addr[!i].sin_port) | |
1686 | goto abort_failed; | |
1687 | } | |
1688 | ||
1689 | *newF1 = F[0]; | |
1690 | *newF2 = F[1]; | |
1691 | return 0; | |
1692 | ||
1693 | #ifdef _WIN32 | |
7dbf237f | 1694 | #ifndef ECONNABORTED |
3202e249 | 1695 | #define ECONNABORTED WSAECONNABORTED |
7dbf237f | 1696 | #endif |
3202e249 VY |
1697 | #endif |
1698 | ||
1699 | abort_failed: | |
1700 | rb_get_errno(); | |
1701 | errno = ECONNABORTED; | |
1702 | failed: | |
1703 | if(errno != ECONNABORTED) | |
1704 | rb_get_errno(); | |
030272f3 | 1705 | o_errno = errno; |
3202e249 VY |
1706 | if(F[0] != NULL) |
1707 | rb_close(F[0]); | |
1708 | if(F[1] != NULL) | |
1709 | rb_close(F[1]); | |
1710 | errno = o_errno; | |
1711 | return -1; | |
1712 | } | |
1713 | ||
1714 | ||
db137867 | 1715 | int |
dc7e6b42 | 1716 | rb_inet_socketpair(int family, int type, int protocol, rb_platform_fd_t fd[2]) |
db137867 AC |
1717 | { |
1718 | int listener = -1; | |
1719 | int connector = -1; | |
1720 | int acceptor = -1; | |
1721 | struct sockaddr_in listen_addr; | |
1722 | struct sockaddr_in connect_addr; | |
3202e249 | 1723 | rb_socklen_t size; |
db137867 AC |
1724 | |
1725 | if(protocol || family != AF_INET) | |
1726 | { | |
1727 | errno = EAFNOSUPPORT; | |
1728 | return -1; | |
1729 | } | |
1730 | if(!fd) | |
1731 | { | |
1732 | errno = EINVAL; | |
1733 | return -1; | |
1734 | } | |
1735 | ||
1736 | listener = socket(AF_INET, type, 0); | |
1737 | if(listener == -1) | |
1738 | return -1; | |
1739 | memset(&listen_addr, 0, sizeof(listen_addr)); | |
1740 | listen_addr.sin_family = AF_INET; | |
1741 | listen_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); | |
1742 | listen_addr.sin_port = 0; /* kernel choses port. */ | |
3202e249 | 1743 | if(bind(listener, (struct sockaddr *)&listen_addr, sizeof(listen_addr)) == -1) |
db137867 AC |
1744 | goto tidy_up_and_fail; |
1745 | if(listen(listener, 1) == -1) | |
1746 | goto tidy_up_and_fail; | |
1747 | ||
1748 | connector = socket(AF_INET, type, 0); | |
1749 | if(connector == -1) | |
1750 | goto tidy_up_and_fail; | |
1751 | /* We want to find out the port number to connect to. */ | |
1752 | size = sizeof(connect_addr); | |
3202e249 | 1753 | if(getsockname(listener, (struct sockaddr *)&connect_addr, &size) == -1) |
db137867 AC |
1754 | goto tidy_up_and_fail; |
1755 | if(size != sizeof(connect_addr)) | |
1756 | goto abort_tidy_up_and_fail; | |
3202e249 | 1757 | if(connect(connector, (struct sockaddr *)&connect_addr, sizeof(connect_addr)) == -1) |
db137867 AC |
1758 | goto tidy_up_and_fail; |
1759 | ||
1760 | size = sizeof(listen_addr); | |
3202e249 | 1761 | acceptor = accept(listener, (struct sockaddr *)&listen_addr, &size); |
db137867 AC |
1762 | if(acceptor == -1) |
1763 | goto tidy_up_and_fail; | |
1764 | if(size != sizeof(listen_addr)) | |
1765 | goto abort_tidy_up_and_fail; | |
1766 | close(listener); | |
1767 | /* Now check we are talking to ourself by matching port and host on the | |
1768 | two sockets. */ | |
3202e249 | 1769 | if(getsockname(connector, (struct sockaddr *)&connect_addr, &size) == -1) |
db137867 AC |
1770 | goto tidy_up_and_fail; |
1771 | if(size != sizeof(connect_addr) | |
1772 | || listen_addr.sin_family != connect_addr.sin_family | |
1773 | || listen_addr.sin_addr.s_addr != connect_addr.sin_addr.s_addr | |
1774 | || listen_addr.sin_port != connect_addr.sin_port) | |
1775 | { | |
1776 | goto abort_tidy_up_and_fail; | |
1777 | } | |
1778 | fd[0] = connector; | |
1779 | fd[1] = acceptor; | |
1780 | return 0; | |
1781 | ||
1782 | abort_tidy_up_and_fail: | |
1783 | errno = EINVAL; /* I hope this is portable and appropriate. */ | |
1784 | ||
1785 | tidy_up_and_fail: | |
1786 | { | |
1787 | int save_errno = errno; | |
1788 | if(listener != -1) | |
1789 | close(listener); | |
1790 | if(connector != -1) | |
1791 | close(connector); | |
1792 | if(acceptor != -1) | |
1793 | close(acceptor); | |
1794 | errno = save_errno; | |
1795 | return -1; | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | #endif | |
1800 | ||
1801 | ||
1802 | static void (*setselect_handler) (rb_fde_t *, unsigned int, PF *, void *); | |
1803 | static int (*select_handler) (long); | |
1804 | static int (*setup_fd_handler) (rb_fde_t *); | |
1805 | static int (*io_sched_event) (struct ev_entry *, int); | |
1806 | static void (*io_unsched_event) (struct ev_entry *); | |
1807 | static int (*io_supports_event) (void); | |
1808 | static void (*io_init_event) (void); | |
1809 | static char iotype[25]; | |
1810 | ||
1811 | const char * | |
1812 | rb_get_iotype(void) | |
1813 | { | |
1814 | return iotype; | |
1815 | } | |
1816 | ||
1817 | static int | |
1818 | rb_unsupported_event(void) | |
1819 | { | |
1820 | return 0; | |
1821 | } | |
1822 | ||
1823 | static int | |
1824 | try_kqueue(void) | |
1825 | { | |
1826 | if(!rb_init_netio_kqueue()) | |
1827 | { | |
1828 | setselect_handler = rb_setselect_kqueue; | |
1829 | select_handler = rb_select_kqueue; | |
1830 | setup_fd_handler = rb_setup_fd_kqueue; | |
1831 | io_sched_event = rb_kqueue_sched_event; | |
1832 | io_unsched_event = rb_kqueue_unsched_event; | |
1833 | io_init_event = rb_kqueue_init_event; | |
1834 | io_supports_event = rb_kqueue_supports_event; | |
1835 | rb_strlcpy(iotype, "kqueue", sizeof(iotype)); | |
1836 | return 0; | |
1837 | } | |
3202e249 | 1838 | return -1; |
db137867 AC |
1839 | } |
1840 | ||
1841 | static int | |
1842 | try_epoll(void) | |
1843 | { | |
1844 | if(!rb_init_netio_epoll()) | |
1845 | { | |
1846 | setselect_handler = rb_setselect_epoll; | |
1847 | select_handler = rb_select_epoll; | |
1848 | setup_fd_handler = rb_setup_fd_epoll; | |
1849 | io_sched_event = rb_epoll_sched_event; | |
1850 | io_unsched_event = rb_epoll_unsched_event; | |
1851 | io_supports_event = rb_epoll_supports_event; | |
1852 | io_init_event = rb_epoll_init_event; | |
1853 | rb_strlcpy(iotype, "epoll", sizeof(iotype)); | |
1854 | return 0; | |
1855 | } | |
1856 | return -1; | |
1857 | } | |
1858 | ||
1859 | static int | |
1860 | try_ports(void) | |
1861 | { | |
1862 | if(!rb_init_netio_ports()) | |
1863 | { | |
1864 | setselect_handler = rb_setselect_ports; | |
1865 | select_handler = rb_select_ports; | |
3202e249 | 1866 | setup_fd_handler = rb_setup_fd_ports; |
030272f3 VY |
1867 | io_sched_event = rb_ports_sched_event; |
1868 | io_unsched_event = rb_ports_unsched_event; | |
1869 | io_init_event = rb_ports_init_event; | |
1870 | io_supports_event = rb_ports_supports_event; | |
db137867 AC |
1871 | rb_strlcpy(iotype, "ports", sizeof(iotype)); |
1872 | return 0; | |
1873 | } | |
1874 | return -1; | |
1875 | } | |
1876 | ||
1877 | static int | |
1878 | try_devpoll(void) | |
1879 | { | |
1880 | if(!rb_init_netio_devpoll()) | |
1881 | { | |
1882 | setselect_handler = rb_setselect_devpoll; | |
1883 | select_handler = rb_select_devpoll; | |
3202e249 | 1884 | setup_fd_handler = rb_setup_fd_devpoll; |
db137867 AC |
1885 | io_sched_event = NULL; |
1886 | io_unsched_event = NULL; | |
1887 | io_init_event = NULL; | |
1888 | io_supports_event = rb_unsupported_event; | |
1889 | rb_strlcpy(iotype, "devpoll", sizeof(iotype)); | |
1890 | return 0; | |
1891 | } | |
1892 | return -1; | |
1893 | } | |
1894 | ||
1895 | static int | |
1896 | try_sigio(void) | |
1897 | { | |
1898 | if(!rb_init_netio_sigio()) | |
1899 | { | |
1900 | setselect_handler = rb_setselect_sigio; | |
1901 | select_handler = rb_select_sigio; | |
3202e249 | 1902 | setup_fd_handler = rb_setup_fd_sigio; |
db137867 | 1903 | io_sched_event = rb_sigio_sched_event; |
3202e249 VY |
1904 | io_unsched_event = rb_sigio_unsched_event; |
1905 | io_supports_event = rb_sigio_supports_event; | |
1906 | io_init_event = rb_sigio_init_event; | |
1907 | ||
db137867 AC |
1908 | rb_strlcpy(iotype, "sigio", sizeof(iotype)); |
1909 | return 0; | |
1910 | } | |
1911 | return -1; | |
1912 | } | |
1913 | ||
3202e249 | 1914 | static int |
db137867 AC |
1915 | try_poll(void) |
1916 | { | |
1917 | if(!rb_init_netio_poll()) | |
1918 | { | |
1919 | setselect_handler = rb_setselect_poll; | |
1920 | select_handler = rb_select_poll; | |
3202e249 | 1921 | setup_fd_handler = rb_setup_fd_poll; |
db137867 AC |
1922 | io_sched_event = NULL; |
1923 | io_unsched_event = NULL; | |
1924 | io_init_event = NULL; | |
1925 | io_supports_event = rb_unsupported_event; | |
1926 | rb_strlcpy(iotype, "poll", sizeof(iotype)); | |
1927 | return 0; | |
1928 | } | |
1929 | return -1; | |
1930 | } | |
1931 | ||
1932 | static int | |
1933 | try_win32(void) | |
1934 | { | |
1935 | if(!rb_init_netio_win32()) | |
1936 | { | |
1937 | setselect_handler = rb_setselect_win32; | |
1938 | select_handler = rb_select_win32; | |
3202e249 | 1939 | setup_fd_handler = rb_setup_fd_win32; |
db137867 AC |
1940 | io_sched_event = NULL; |
1941 | io_unsched_event = NULL; | |
1942 | io_init_event = NULL; | |
1943 | io_supports_event = rb_unsupported_event; | |
1944 | rb_strlcpy(iotype, "win32", sizeof(iotype)); | |
1945 | return 0; | |
1946 | } | |
1947 | return -1; | |
1948 | } | |
1949 | ||
1950 | static int | |
1951 | try_select(void) | |
3202e249 | 1952 | { |
db137867 AC |
1953 | if(!rb_init_netio_select()) |
1954 | { | |
1955 | setselect_handler = rb_setselect_select; | |
1956 | select_handler = rb_select_select; | |
3202e249 | 1957 | setup_fd_handler = rb_setup_fd_select; |
db137867 AC |
1958 | io_sched_event = NULL; |
1959 | io_unsched_event = NULL; | |
1960 | io_init_event = NULL; | |
1961 | io_supports_event = rb_unsupported_event; | |
1962 | rb_strlcpy(iotype, "select", sizeof(iotype)); | |
1963 | return 0; | |
1964 | } | |
1965 | return -1; | |
1966 | } | |
1967 | ||
1968 | ||
1969 | int | |
1970 | rb_io_sched_event(struct ev_entry *ev, int when) | |
1971 | { | |
3202e249 VY |
1972 | if(ev == NULL || io_supports_event == NULL || io_sched_event == NULL |
1973 | || !io_supports_event()) | |
db137867 AC |
1974 | return 0; |
1975 | return io_sched_event(ev, when); | |
1976 | } | |
1977 | ||
1978 | void | |
1979 | rb_io_unsched_event(struct ev_entry *ev) | |
1980 | { | |
3202e249 VY |
1981 | if(ev == NULL || io_supports_event == NULL || io_unsched_event == NULL |
1982 | || !io_supports_event()) | |
db137867 | 1983 | return; |
3202e249 | 1984 | io_unsched_event(ev); |
db137867 | 1985 | } |
3202e249 | 1986 | |
db137867 AC |
1987 | int |
1988 | rb_io_supports_event(void) | |
1989 | { | |
1990 | if(io_supports_event == NULL) | |
1991 | return 0; | |
1992 | return io_supports_event(); | |
1993 | } | |
1994 | ||
1995 | void | |
1996 | rb_io_init_event(void) | |
1997 | { | |
1998 | io_init_event(); | |
1999 | rb_event_io_register_all(); | |
2000 | } | |
2001 | ||
2002 | void | |
2003 | rb_init_netio(void) | |
2004 | { | |
2005 | char *ioenv = getenv("LIBRB_USE_IOTYPE"); | |
2006 | rb_fd_table = rb_malloc(RB_FD_HASH_SIZE * sizeof(rb_dlink_list)); | |
2007 | rb_init_ssl(); | |
3202e249 | 2008 | |
db137867 AC |
2009 | if(ioenv != NULL) |
2010 | { | |
2011 | if(!strcmp("epoll", ioenv)) | |
2012 | { | |
2013 | if(!try_epoll()) | |
2014 | return; | |
3202e249 VY |
2015 | } |
2016 | else if(!strcmp("kqueue", ioenv)) | |
db137867 AC |
2017 | { |
2018 | if(!try_kqueue()) | |
2019 | return; | |
3202e249 VY |
2020 | } |
2021 | else if(!strcmp("ports", ioenv)) | |
db137867 AC |
2022 | { |
2023 | if(!try_ports()) | |
2024 | return; | |
3202e249 VY |
2025 | } |
2026 | else if(!strcmp("poll", ioenv)) | |
db137867 AC |
2027 | { |
2028 | if(!try_poll()) | |
2029 | return; | |
3202e249 VY |
2030 | } |
2031 | else if(!strcmp("devpoll", ioenv)) | |
db137867 AC |
2032 | { |
2033 | if(!try_devpoll()) | |
2034 | return; | |
3202e249 VY |
2035 | } |
2036 | else if(!strcmp("sigio", ioenv)) | |
db137867 AC |
2037 | { |
2038 | if(!try_sigio()) | |
2039 | return; | |
3202e249 VY |
2040 | } |
2041 | else if(!strcmp("select", ioenv)) | |
db137867 | 2042 | { |
3202e249 | 2043 | if(!try_select()) |
db137867 AC |
2044 | return; |
2045 | } | |
3202e249 | 2046 | if(!strcmp("win32", ioenv)) |
db137867 | 2047 | { |
3202e249 | 2048 | if(!try_win32()) |
db137867 AC |
2049 | return; |
2050 | } | |
3202e249 | 2051 | |
db137867 AC |
2052 | } |
2053 | ||
2054 | if(!try_kqueue()) | |
2055 | return; | |
2056 | if(!try_epoll()) | |
2057 | return; | |
2058 | if(!try_ports()) | |
2059 | return; | |
2060 | if(!try_devpoll()) | |
2061 | return; | |
2062 | if(!try_sigio()) | |
2063 | return; | |
2064 | if(!try_poll()) | |
2065 | return; | |
2066 | if(!try_win32()) | |
2067 | return; | |
2068 | if(!try_select()) | |
2069 | return; | |
2070 | ||
2071 | rb_lib_log("rb_init_netio: Could not find any io handlers...giving up"); | |
2072 | ||
2073 | abort(); | |
2074 | } | |
2075 | ||
3202e249 | 2076 | void |
db137867 AC |
2077 | rb_setselect(rb_fde_t *F, unsigned int type, PF * handler, void *client_data) |
2078 | { | |
2079 | setselect_handler(F, type, handler, client_data); | |
2080 | } | |
2081 | ||
3202e249 | 2082 | int |
db137867 AC |
2083 | rb_select(unsigned long timeout) |
2084 | { | |
2085 | int ret = select_handler(timeout); | |
2086 | free_fds(); | |
2087 | return ret; | |
2088 | } | |
2089 | ||
3202e249 | 2090 | int |
db137867 AC |
2091 | rb_setup_fd(rb_fde_t *F) |
2092 | { | |
2093 | return setup_fd_handler(F); | |
2094 | } | |
2095 | ||
2096 | ||
db137867 AC |
2097 | int |
2098 | rb_ignore_errno(int error) | |
2099 | { | |
3202e249 | 2100 | switch (error) |
db137867 AC |
2101 | { |
2102 | #ifdef EINPROGRESS | |
3202e249 | 2103 | case EINPROGRESS: |
db137867 AC |
2104 | #endif |
2105 | #if defined EWOULDBLOCK | |
3202e249 | 2106 | case EWOULDBLOCK: |
db137867 AC |
2107 | #endif |
2108 | #if defined(EAGAIN) && (EWOULDBLOCK != EAGAIN) | |
3202e249 | 2109 | case EAGAIN: |
db137867 AC |
2110 | #endif |
2111 | #ifdef EINTR | |
3202e249 | 2112 | case EINTR: |
db137867 AC |
2113 | #endif |
2114 | #ifdef ERESTART | |
3202e249 | 2115 | case ERESTART: |
db137867 AC |
2116 | #endif |
2117 | #ifdef ENOBUFS | |
3202e249 VY |
2118 | case ENOBUFS: |
2119 | #endif | |
2120 | return 1; | |
2121 | default: | |
2122 | break; | |
2123 | } | |
db137867 AC |
2124 | return 0; |
2125 | } | |
2126 | ||
2127 | ||
3202e249 | 2128 | #if defined(HAVE_SENDMSG) && !defined(WIN32) |
db137867 AC |
2129 | int |
2130 | rb_recv_fd_buf(rb_fde_t *F, void *data, size_t datasize, rb_fde_t **xF, int nfds) | |
2131 | { | |
2132 | struct msghdr msg; | |
2133 | struct cmsghdr *cmsg; | |
2134 | struct iovec iov[1]; | |
2135 | struct stat st; | |
a9fb3ed0 | 2136 | uint8_t stype = RB_FD_UNKNOWN; |
db137867 | 2137 | const char *desc; |
dc7e6b42 | 2138 | rb_platform_fd_t fd, len, x, rfds; |
db137867 AC |
2139 | |
2140 | int control_len = CMSG_SPACE(sizeof(int) * nfds); | |
2141 | ||
2142 | iov[0].iov_base = data; | |
2143 | iov[0].iov_len = datasize; | |
3202e249 | 2144 | |
db137867 AC |
2145 | msg.msg_name = NULL; |
2146 | msg.msg_namelen = 0; | |
2147 | msg.msg_iov = iov; | |
2148 | msg.msg_iovlen = 1; | |
2149 | msg.msg_flags = 0; | |
2150 | cmsg = alloca(control_len); | |
2151 | msg.msg_control = cmsg; | |
2152 | msg.msg_controllen = control_len; | |
2153 | ||
2154 | if((len = recvmsg(rb_get_fd(F), &msg, 0)) <= 0) | |
2155 | return len; | |
2156 | ||
3202e249 VY |
2157 | if(msg.msg_controllen > 0 && msg.msg_control != NULL |
2158 | && (cmsg = CMSG_FIRSTHDR(&msg)) != NULL) | |
db137867 | 2159 | { |
90e960f0 | 2160 | rfds = ((unsigned char *)cmsg + cmsg->cmsg_len - CMSG_DATA(cmsg)) / sizeof(int); |
db137867 AC |
2161 | |
2162 | for(x = 0; x < nfds && x < rfds; x++) | |
2163 | { | |
2164 | fd = ((int *)CMSG_DATA(cmsg))[x]; | |
2165 | stype = RB_FD_UNKNOWN; | |
2166 | desc = "remote unknown"; | |
2167 | if(!fstat(fd, &st)) | |
2168 | { | |
2169 | if(S_ISSOCK(st.st_mode)) | |
2170 | { | |
2171 | stype = RB_FD_SOCKET; | |
2172 | desc = "remote socket"; | |
2173 | } | |
2174 | else if(S_ISFIFO(st.st_mode)) | |
2175 | { | |
2176 | stype = RB_FD_PIPE; | |
2177 | desc = "remote pipe"; | |
2178 | } | |
2179 | else if(S_ISREG(st.st_mode)) | |
2180 | { | |
2181 | stype = RB_FD_FILE; | |
2182 | desc = "remote file"; | |
2183 | } | |
2184 | } | |
2185 | xF[x] = rb_open(fd, stype, desc); | |
2186 | } | |
3202e249 VY |
2187 | } |
2188 | else | |
db137867 | 2189 | *xF = NULL; |
3202e249 | 2190 | return len; |
db137867 AC |
2191 | } |
2192 | ||
2193 | ||
2194 | int | |
3202e249 | 2195 | rb_send_fd_buf(rb_fde_t *xF, rb_fde_t **F, int count, void *data, size_t datasize, pid_t pid) |
db137867 | 2196 | { |
db137867 AC |
2197 | struct msghdr msg; |
2198 | struct cmsghdr *cmsg; | |
2199 | struct iovec iov[1]; | |
2200 | char empty = '0'; | |
db137867 | 2201 | |
5cc7ba25 | 2202 | memset(&msg, 0, sizeof(msg)); |
db137867 AC |
2203 | if(datasize == 0) |
2204 | { | |
2205 | iov[0].iov_base = ∅ | |
3202e249 VY |
2206 | iov[0].iov_len = 1; |
2207 | } | |
2208 | else | |
2209 | { | |
db137867 AC |
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 | { | |
e23126c8 | 2223 | size_t ucount = (size_t)count; |
db137867 | 2224 | int len = CMSG_SPACE(sizeof(int) * count); |
5cc7ba25 | 2225 | char buf[len]; |
db137867 AC |
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 | ||
e23126c8 | 2234 | for(size_t i = 0; i < ucount; i++) |
3202e249 VY |
2235 | { |
2236 | ((int *)CMSG_DATA(cmsg))[i] = rb_get_fd(F[i]); | |
db137867 AC |
2237 | } |
2238 | msg.msg_controllen = cmsg->cmsg_len; | |
5cc7ba25 | 2239 | return sendmsg(rb_get_fd(xF), &msg, MSG_NOSIGNAL); |
db137867 | 2240 | } |
5cc7ba25 | 2241 | return sendmsg(rb_get_fd(xF), &msg, MSG_NOSIGNAL); |
db137867 | 2242 | } |
4eafa9e6 | 2243 | #else /* defined(HAVE_SENDMSG) && !defined(WIN32) */ |
3202e249 VY |
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 | } | |
db137867 | 2251 | |
3202e249 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 | } | |
4eafa9e6 EM |
2258 | #endif /* _WIN32 */ |
2259 | #endif /* defined(HAVE_SENDMSG) && !defined(WIN32) */ | |
2260 | ||
2261 | #ifdef RB_IPV6 | |
2262 | int | |
2263 | rb_ipv4_from_ipv6(const struct sockaddr_in6 *restrict ip6, struct sockaddr_in *restrict ip4) | |
2264 | { | |
2265 | int i; | |
2266 | ||
2267 | if (!memcmp(ip6->sin6_addr.s6_addr, "\x20\x02", 2)) | |
2268 | { | |
2269 | /* 6to4 and similar */ | |
2270 | memcpy(&ip4->sin_addr, ip6->sin6_addr.s6_addr + 2, 4); | |
2271 | } | |
2272 | else if (!memcmp(ip6->sin6_addr.s6_addr, "\x20\x01\x00\x00", 4)) | |
2273 | { | |
2274 | /* Teredo */ | |
2275 | for (i = 0; i < 4; i++) | |
2276 | ((uint8_t *)&ip4->sin_addr)[i] = 0xFF ^ | |
2277 | ip6->sin6_addr.s6_addr[12 + i]; | |
2278 | } | |
2279 | else | |
2280 | return 0; | |
2281 | SET_SS_LEN(ip4, sizeof(struct sockaddr_in)); | |
2282 | ip4->sin_family = AF_INET; | |
2283 | ip4->sin_port = 0; | |
2284 | return 1; | |
2285 | } | |
2286 | #else | |
2287 | int | |
2288 | rb_ipv4_from_ipv6(const struct sockaddr_in6 *restrict ip6, struct sockaddr_in *restrict ip4) | |
2289 | { | |
2290 | return 0; | |
2291 | } | |
2292 | #endif /* RB_IPV6 */ |