d3372da9 |
1 | /* |
2 | * Dolda Connect - Modular multiuser Direct Connect-style client |
3 | * Copyright (C) 2004 Fredrik Tolf (fredrik@dolda2000.com) |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or |
8 | * (at your option) any later version. |
9 | * |
10 | * This program is distributed in the hope that it will be useful, |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
13 | * GNU General Public License for more details. |
14 | * |
15 | * You should have received a copy of the GNU General Public License |
16 | * along with this program; if not, write to the Free Software |
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
18 | */ |
19 | /* XXX: Implement SOCKS proxyability */ |
20 | |
21 | #ifdef HAVE_CONFIG_H |
22 | #include <config.h> |
23 | #endif |
24 | #include <string.h> |
25 | #include <stdlib.h> |
26 | #include <unistd.h> |
27 | #include <fcntl.h> |
28 | #include <sys/ioctl.h> |
29 | #include <sys/socket.h> |
30 | #include <sys/un.h> |
31 | #include <sys/poll.h> |
32 | #include <arpa/inet.h> |
33 | #include <netinet/in.h> |
34 | #include <netdb.h> |
35 | #include <sys/signal.h> |
d3372da9 |
36 | #ifdef HAVE_LINUX_SOCKIOS_H |
37 | #include <linux/sockios.h> |
38 | #endif |
39 | #include <errno.h> |
40 | #include <net/if.h> |
41 | |
42 | #include "conf.h" |
43 | #include "net.h" |
44 | #include "module.h" |
45 | #include "log.h" |
46 | #include "utils.h" |
47 | #include "sysevents.h" |
48 | |
49 | static struct configvar myvars[] = |
50 | { |
51 | /* 0 = Direct mode, 1 = Passive mode, 2 = SOCKS proxy */ |
52 | {CONF_VAR_INT, "mode", {.num = 0}}, |
347d6d76 |
53 | {CONF_VAR_BOOL, "reuseaddr", {.num = 0}}, |
d3372da9 |
54 | /* Only for direct mode */ |
55 | {CONF_VAR_IPV4, "visibleipv4", {.ipv4 = {0}}}, |
56 | {CONF_VAR_STRING, "publicif", {.str = L""}}, |
b020fb3d |
57 | /* Diffserv should be supported on IPv4, too, but I don't know the |
58 | * API to do that. */ |
59 | {CONF_VAR_INT, "diffserv-mincost", {.num = 0}}, |
60 | {CONF_VAR_INT, "diffserv-maxrel", {.num = 0}}, |
61 | {CONF_VAR_INT, "diffserv-maxtp", {.num = 0}}, |
62 | {CONF_VAR_INT, "diffserv-mindelay", {.num = 0}}, |
d3372da9 |
63 | {CONF_VAR_END} |
64 | }; |
65 | |
66 | static struct socket *sockets = NULL; |
67 | int numsocks = 0; |
68 | |
69 | /* XXX: Get autoconf for all this... */ |
70 | int getpublicaddr(int af, struct sockaddr **addr, socklen_t *lenbuf) |
71 | { |
72 | struct sockaddr_in *ipv4; |
73 | struct configvar *var; |
74 | void *bufend; |
75 | int sock; |
76 | struct ifconf conf; |
77 | struct ifreq *ifr, req; |
78 | char *pif; |
79 | |
80 | if(af == AF_INET) |
81 | { |
82 | var = confgetvar("net", "visibleipv4"); |
83 | if(var->val.ipv4.s_addr != 0) |
84 | { |
85 | ipv4 = smalloc(sizeof(*ipv4)); |
86 | ipv4->sin_family = AF_INET; |
87 | ipv4->sin_addr.s_addr = var->val.ipv4.s_addr; |
88 | *addr = (struct sockaddr *)ipv4; |
89 | *lenbuf = sizeof(*ipv4); |
90 | return(0); |
91 | } |
bcb73bb3 |
92 | if((pif = icswcstombs(confgetstr("net", "publicif"), NULL, NULL)) == NULL) |
d3372da9 |
93 | { |
94 | flog(LOG_ERR, "could not convert net.publicif into local charset: %s", strerror(errno)); |
95 | return(-1); |
96 | } |
6fb0c6ac |
97 | if(!strcmp(pif, "")) |
98 | return(1); |
d3372da9 |
99 | if((sock = socket(AF_INET, SOCK_DGRAM, 0)) < 0) |
100 | return(-1); |
101 | conf.ifc_buf = smalloc(conf.ifc_len = 65536); |
102 | if(ioctl(sock, SIOCGIFCONF, &conf) < 0) |
103 | { |
104 | free(conf.ifc_buf); |
105 | close(sock); |
106 | return(-1); |
107 | } |
108 | bufend = ((char *)conf.ifc_buf) + conf.ifc_len; |
109 | ipv4 = NULL; |
110 | for(ifr = conf.ifc_ifcu.ifcu_req; (void *)ifr < bufend; ifr++) |
111 | { |
1315d02a |
112 | if(strcmp(ifr->ifr_name, pif)) |
6fb0c6ac |
113 | continue; |
d3372da9 |
114 | memset(&req, 0, sizeof(req)); |
115 | memcpy(req.ifr_name, ifr->ifr_name, sizeof(ifr->ifr_name)); |
116 | if(ioctl(sock, SIOCGIFFLAGS, &req) < 0) |
6fb0c6ac |
117 | break; |
118 | if(!(req.ifr_flags & IFF_UP)) |
d3372da9 |
119 | { |
6fb0c6ac |
120 | flog(LOG_WARNING, "public interface is down"); |
121 | break; |
d3372da9 |
122 | } |
6fb0c6ac |
123 | if(ifr->ifr_addr.sa_family != AF_INET) |
d3372da9 |
124 | { |
6fb0c6ac |
125 | flog(LOG_WARNING, "address of the public interface is not AF_INET"); |
126 | break; |
d3372da9 |
127 | } |
6fb0c6ac |
128 | ipv4 = smalloc(sizeof(*ipv4)); |
129 | memcpy(ipv4, &ifr->ifr_addr, sizeof(ifr->ifr_addr)); |
130 | break; |
d3372da9 |
131 | } |
bcb73bb3 |
132 | free(conf.ifc_buf); |
d3372da9 |
133 | close(sock); |
134 | if(ipv4 != NULL) |
135 | { |
136 | *addr = (struct sockaddr *)ipv4; |
137 | *lenbuf = sizeof(*ipv4); |
138 | return(0); |
139 | } |
140 | errno = ENETDOWN; |
141 | return(-1); |
142 | } |
6fb0c6ac |
143 | return(1); |
d3372da9 |
144 | } |
145 | |
146 | static struct socket *newsock(int type) |
147 | { |
148 | struct socket *new; |
149 | |
150 | new = smalloc(sizeof(*new)); |
151 | new->refcount = 2; |
152 | new->fd = -1; |
153 | new->isrealsocket = 1; |
154 | new->family = -1; |
155 | new->tos = 0; |
156 | new->type = type; |
157 | new->state = -1; |
158 | new->ignread = 0; |
159 | new->close = 0; |
160 | new->remote = NULL; |
161 | new->remotelen = 0; |
162 | switch(type) |
163 | { |
164 | case SOCK_STREAM: |
165 | new->outbuf.s.buf = NULL; |
166 | new->outbuf.s.bufsize = 0; |
167 | new->outbuf.s.datasize = 0; |
168 | new->inbuf.s.buf = NULL; |
169 | new->inbuf.s.bufsize = 0; |
170 | new->inbuf.s.datasize = 0; |
171 | break; |
172 | case SOCK_DGRAM: |
173 | new->outbuf.d.f = new->outbuf.d.l = NULL; |
174 | new->inbuf.d.f = new->inbuf.d.l = NULL; |
175 | break; |
176 | } |
177 | new->conncb = NULL; |
178 | new->errcb = NULL; |
179 | new->readcb = NULL; |
180 | new->writecb = NULL; |
181 | new->acceptcb = NULL; |
182 | new->next = sockets; |
183 | new->prev = NULL; |
184 | if(sockets != NULL) |
185 | sockets->prev = new; |
186 | sockets = new; |
187 | numsocks++; |
188 | return(new); |
189 | } |
190 | |
191 | static struct socket *mksock(int domain, int type) |
192 | { |
193 | int fd; |
194 | struct socket *new; |
195 | |
196 | if((fd = socket(domain, type, 0)) < 0) |
197 | { |
198 | flog(LOG_CRIT, "could not create socket: %s", strerror(errno)); |
199 | return(NULL); |
200 | } |
201 | new = newsock(type); |
202 | new->fd = fd; |
203 | new->family = domain; |
204 | fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); |
205 | return(new); |
206 | } |
207 | |
208 | struct socket *wrapsock(int fd) |
209 | { |
210 | struct socket *new; |
211 | |
212 | new = newsock(SOCK_STREAM); |
213 | new->fd = fd; |
214 | new->state = SOCK_EST; |
215 | new->isrealsocket = 0; |
216 | fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) | O_NONBLOCK); |
217 | return(new); |
218 | } |
219 | |
220 | static void unlinksock(struct socket *sk) |
221 | { |
222 | if(sk->prev != NULL) |
223 | sk->prev->next = sk->next; |
224 | if(sk->next != NULL) |
225 | sk->next->prev = sk->prev; |
226 | if(sk == sockets) |
227 | sockets = sk->next; |
228 | putsock(sk); |
229 | numsocks--; |
230 | } |
231 | |
232 | void getsock(struct socket *sk) |
233 | { |
234 | sk->refcount++; |
235 | } |
236 | |
237 | void putsock(struct socket *sk) |
238 | { |
239 | struct dgrambuf *buf; |
240 | |
241 | if(--(sk->refcount) == 0) |
242 | { |
243 | switch(sk->type) |
244 | { |
245 | case SOCK_STREAM: |
246 | if(sk->outbuf.s.buf != NULL) |
247 | free(sk->outbuf.s.buf); |
248 | if(sk->inbuf.s.buf != NULL) |
249 | free(sk->inbuf.s.buf); |
250 | break; |
251 | case SOCK_DGRAM: |
252 | while((buf = sk->outbuf.d.f) != NULL) |
253 | { |
254 | sk->outbuf.d.f = buf->next; |
255 | free(buf->data); |
161604ea |
256 | free(buf->addr); |
d3372da9 |
257 | free(buf); |
258 | } |
259 | while((buf = sk->inbuf.d.f) != NULL) |
260 | { |
261 | sk->inbuf.d.f = buf->next; |
262 | free(buf->data); |
161604ea |
263 | free(buf->addr); |
d3372da9 |
264 | free(buf); |
265 | } |
266 | break; |
267 | } |
268 | if(sk->fd >= 0) |
269 | close(sk->fd); |
270 | if(sk->remote != NULL) |
271 | free(sk->remote); |
272 | free(sk); |
273 | } |
274 | } |
275 | |
336539c2 |
276 | void sockpushdata(struct socket *sk, void *buf, size_t size) |
277 | { |
278 | switch(sk->type) |
279 | { |
280 | case SOCK_STREAM: |
281 | sizebuf(&sk->inbuf.s.buf, &sk->inbuf.s.bufsize, sk->inbuf.s.datasize + size, 1, 1); |
282 | memmove(sk->inbuf.s.buf + size, sk->inbuf.s.buf, sk->inbuf.s.datasize); |
283 | memcpy(sk->inbuf.s.buf, buf, size); |
284 | sk->inbuf.s.datasize += size; |
285 | break; |
286 | case SOCK_DGRAM: |
287 | /* XXX */ |
288 | break; |
289 | } |
290 | return; |
291 | } |
292 | |
d3372da9 |
293 | void *sockgetinbuf(struct socket *sk, size_t *size) |
294 | { |
295 | void *buf; |
296 | struct dgrambuf *dbuf; |
297 | |
298 | switch(sk->type) |
299 | { |
300 | case SOCK_STREAM: |
301 | if((sk->inbuf.s.buf == NULL) || (sk->inbuf.s.datasize == 0)) |
302 | { |
303 | *size = 0; |
304 | return(NULL); |
305 | } |
306 | buf = sk->inbuf.s.buf; |
307 | *size = sk->inbuf.s.datasize; |
308 | sk->inbuf.s.buf = NULL; |
309 | sk->inbuf.s.bufsize = sk->inbuf.s.datasize = 0; |
310 | return(buf); |
311 | case SOCK_DGRAM: |
312 | if((dbuf = sk->inbuf.d.f) == NULL) |
313 | return(NULL); |
314 | sk->inbuf.d.f = dbuf->next; |
315 | if(dbuf->next == NULL) |
316 | sk->inbuf.d.l = NULL; |
317 | buf = dbuf->data; |
318 | *size = dbuf->size; |
319 | free(dbuf->addr); |
320 | free(dbuf); |
321 | return(buf); |
322 | } |
323 | return(NULL); |
324 | } |
325 | |
326 | static void sockrecv(struct socket *sk) |
327 | { |
328 | int ret, inq; |
329 | struct dgrambuf *dbuf; |
330 | |
331 | switch(sk->type) |
332 | { |
333 | case SOCK_STREAM: |
334 | #if defined(HAVE_LINUX_SOCKIOS_H) && defined(SIOCINQ) |
335 | /* SIOCINQ is Linux-specific AFAIK, but I really have no idea |
336 | * how to read the inqueue size on other OSs */ |
337 | if(ioctl(sk->fd, SIOCINQ, &inq)) |
338 | { |
339 | /* I don't really know what could go wrong here, so let's |
340 | * assume it's transient. */ |
341 | flog(LOG_WARNING, "SIOCINQ return %s on socket %i, falling back to 2048 bytes", strerror(errno), sk->fd); |
342 | inq = 2048; |
343 | } |
344 | #else |
345 | inq = 2048; |
346 | #endif |
347 | if(inq > 65536) |
348 | inq = 65536; |
349 | sizebuf(&sk->inbuf.s.buf, &sk->inbuf.s.bufsize, sk->inbuf.s.datasize + inq, 1, 1); |
350 | ret = read(sk->fd, sk->inbuf.s.buf + sk->inbuf.s.datasize, inq); |
351 | if(ret < 0) |
352 | { |
353 | if((errno == EINTR) || (errno == EAGAIN)) |
354 | return; |
355 | if(sk->errcb != NULL) |
356 | sk->errcb(sk, errno, sk->data); |
357 | closesock(sk); |
358 | return; |
359 | } |
360 | if(ret == 0) |
361 | { |
362 | if(sk->errcb != NULL) |
363 | sk->errcb(sk, 0, sk->data); |
364 | closesock(sk); |
365 | return; |
366 | } |
367 | sk->inbuf.s.datasize += ret; |
368 | if(sk->readcb != NULL) |
369 | sk->readcb(sk, sk->data); |
370 | break; |
371 | case SOCK_DGRAM: |
372 | if(ioctl(sk->fd, SIOCINQ, &inq)) |
373 | { |
374 | /* I don't really know what could go wrong here, so let's |
375 | * assume it's transient. */ |
376 | flog(LOG_WARNING, "SIOCINQ return %s on socket %i", strerror(errno), sk->fd); |
377 | return; |
378 | } |
379 | dbuf = smalloc(sizeof(*dbuf)); |
380 | dbuf->data = smalloc(inq); |
381 | dbuf->addr = smalloc(dbuf->addrlen = sizeof(struct sockaddr_storage)); |
382 | ret = recvfrom(sk->fd, dbuf->data, inq, 0, dbuf->addr, &dbuf->addrlen); |
383 | if(ret < 0) |
384 | { |
385 | free(dbuf->addr); |
386 | free(dbuf->data); |
387 | free(dbuf); |
388 | if((errno == EINTR) || (errno == EAGAIN)) |
389 | return; |
390 | if(sk->errcb != NULL) |
391 | sk->errcb(sk, errno, sk->data); |
392 | closesock(sk); |
393 | return; |
394 | } |
395 | /* On UDP/IPv[46], ret == 0 doesn't mean EOF (since UDP can't |
396 | * have EOF), but rather an empty packet. I don't know if any |
397 | * other potential DGRAM protocols might have an EOF |
398 | * condition, so let's play safe. */ |
399 | if(ret == 0) |
400 | { |
401 | free(dbuf->addr); |
402 | free(dbuf->data); |
403 | free(dbuf); |
404 | if(!((sk->family == AF_INET) || (sk->family == AF_INET6))) |
405 | { |
406 | if(sk->errcb != NULL) |
407 | sk->errcb(sk, 0, sk->data); |
408 | closesock(sk); |
409 | } |
410 | return; |
411 | } |
412 | dbuf->addr = srealloc(dbuf->addr, dbuf->addrlen); |
413 | dbuf->data = srealloc(dbuf->data, dbuf->size = ret); |
414 | dbuf->next = NULL; |
415 | if(sk->inbuf.d.l != NULL) |
416 | sk->inbuf.d.l->next = dbuf; |
417 | else |
418 | sk->inbuf.d.f = dbuf; |
419 | sk->inbuf.d.l = dbuf; |
420 | if(sk->readcb != NULL) |
421 | sk->readcb(sk, sk->data); |
422 | break; |
423 | } |
424 | } |
425 | |
426 | static void sockflush(struct socket *sk) |
427 | { |
428 | int ret; |
429 | struct dgrambuf *dbuf; |
430 | |
431 | switch(sk->type) |
432 | { |
433 | case SOCK_STREAM: |
434 | if(sk->isrealsocket) |
435 | ret = send(sk->fd, sk->outbuf.s.buf, sk->outbuf.s.datasize, MSG_DONTWAIT | MSG_NOSIGNAL); |
436 | else |
437 | ret = write(sk->fd, sk->outbuf.s.buf, sk->outbuf.s.datasize); |
438 | if(ret < 0) |
439 | { |
440 | /* For now, assume transient error, since |
441 | * the socket is polled for errors */ |
442 | break; |
443 | } |
444 | if(ret > 0) |
445 | { |
446 | memmove(sk->outbuf.s.buf, ((char *)sk->outbuf.s.buf) + ret, sk->outbuf.s.datasize -= ret); |
447 | if(sk->writecb != NULL) |
448 | sk->writecb(sk, sk->data); |
449 | } |
450 | break; |
451 | case SOCK_DGRAM: |
452 | dbuf = sk->outbuf.d.f; |
453 | if((sk->outbuf.d.f = dbuf->next) == NULL) |
454 | sk->outbuf.d.l = NULL; |
455 | sendto(sk->fd, dbuf->data, dbuf->size, MSG_DONTWAIT | MSG_NOSIGNAL, dbuf->addr, dbuf->addrlen); |
456 | free(dbuf->data); |
457 | free(dbuf->addr); |
458 | free(dbuf); |
459 | if(sk->writecb != NULL) |
460 | sk->writecb(sk, sk->data); |
461 | break; |
462 | } |
463 | } |
464 | |
465 | void closesock(struct socket *sk) |
466 | { |
467 | sk->state = SOCK_STL; |
468 | close(sk->fd); |
469 | sk->fd = -1; |
470 | sk->close = 0; |
471 | } |
472 | |
473 | void sockqueue(struct socket *sk, void *data, size_t size) |
474 | { |
475 | struct dgrambuf *new; |
476 | |
477 | if(sk->state == SOCK_STL) |
478 | return; |
479 | switch(sk->type) |
480 | { |
481 | case SOCK_STREAM: |
482 | sizebuf(&(sk->outbuf.s.buf), &(sk->outbuf.s.bufsize), sk->outbuf.s.datasize + size, 1, 1); |
483 | memcpy(sk->outbuf.s.buf + sk->outbuf.s.datasize, data, size); |
484 | sk->outbuf.s.datasize += size; |
485 | break; |
486 | case SOCK_DGRAM: |
487 | if(sk->remote == NULL) |
488 | return; |
489 | new = smalloc(sizeof(*new)); |
490 | new->next = NULL; |
491 | memcpy(new->data = smalloc(size), data, new->size = size); |
492 | memcpy(new->addr = smalloc(sk->remotelen), sk->remote, new->addrlen = sk->remotelen); |
493 | if(sk->outbuf.d.l == NULL) |
494 | { |
495 | sk->outbuf.d.l = sk->outbuf.d.f = new; |
496 | } else { |
497 | sk->outbuf.d.l->next = new; |
498 | sk->outbuf.d.l = new; |
499 | } |
500 | break; |
501 | } |
502 | } |
503 | |
504 | size_t sockgetdatalen(struct socket *sk) |
505 | { |
506 | struct dgrambuf *b; |
507 | size_t ret; |
508 | |
509 | switch(sk->type) |
510 | { |
511 | case SOCK_STREAM: |
512 | ret = sk->inbuf.s.datasize; |
513 | break; |
514 | case SOCK_DGRAM: |
515 | ret = 0; |
516 | for(b = sk->inbuf.d.f; b != NULL; b = b->next) |
517 | ret += b->size; |
518 | break; |
519 | } |
520 | return(ret); |
521 | } |
522 | |
523 | size_t sockqueuesize(struct socket *sk) |
524 | { |
525 | struct dgrambuf *b; |
526 | size_t ret; |
527 | |
528 | switch(sk->type) |
529 | { |
530 | case SOCK_STREAM: |
531 | ret = sk->outbuf.s.datasize; |
532 | break; |
533 | case SOCK_DGRAM: |
534 | ret = 0; |
535 | for(b = sk->outbuf.d.f; b != NULL; b = b->next) |
536 | ret += b->size; |
537 | break; |
538 | } |
539 | return(ret); |
540 | } |
541 | |
d3372da9 |
542 | /* |
543 | * The difference between netcslisten() and netcslistenlocal() is that |
544 | * netcslistenlocal() always listens on the local host, instead of |
545 | * following proxy/passive mode directions. It is suitable for eg. the |
546 | * UI channel, while the file sharing networks should, naturally, use |
547 | * netcslisten() instead. |
548 | */ |
549 | |
550 | struct socket *netcslistenlocal(int type, struct sockaddr *name, socklen_t namelen, void (*func)(struct socket *, struct socket *, void *), void *data) |
551 | { |
552 | struct socket *sk; |
66c517d2 |
553 | int intbuf; |
d3372da9 |
554 | |
555 | /* I don't know if this is actually correct (it probably isn't), |
556 | * but since, at on least Linux systems, PF_* are specifically |
557 | * #define'd to their AF_* counterparts, it allows for a severely |
558 | * smoother implementation. If it breaks something on your |
559 | * platform, please tell me so. |
560 | */ |
561 | if((sk = mksock(name->sa_family, type)) == NULL) |
562 | return(NULL); |
563 | sk->state = SOCK_LST; |
687b2ee2 |
564 | if(confgetint("net", "reuseaddr")) |
565 | { |
566 | intbuf = 1; |
567 | setsockopt(sk->fd, SOL_SOCKET, SO_REUSEADDR, &intbuf, sizeof(intbuf)); |
568 | } |
d3372da9 |
569 | if(bind(sk->fd, name, namelen) < 0) |
570 | { |
571 | putsock(sk); |
572 | return(NULL); |
573 | } |
574 | if(listen(sk->fd, 16) < 0) |
575 | { |
576 | putsock(sk); |
577 | return(NULL); |
578 | } |
579 | sk->acceptcb = func; |
580 | sk->data = data; |
581 | return(sk); |
582 | } |
583 | |
c23acc61 |
584 | struct socket *netcslisten(int type, struct sockaddr *name, socklen_t namelen, void (*func)(struct socket *, struct socket *, void *), void *data) |
585 | { |
586 | if(confgetint("net", "mode") == 1) |
587 | { |
588 | errno = EOPNOTSUPP; |
589 | return(NULL); |
590 | } |
c23acc61 |
591 | if(confgetint("net", "mode") == 0) |
592 | return(netcslistenlocal(type, name, namelen, func, data)); |
593 | errno = EOPNOTSUPP; |
594 | return(NULL); |
595 | } |
596 | |
0a1bc5b1 |
597 | struct socket *netcstcplisten(int port, int local, void (*func)(struct socket *, struct socket *, void *), void *data) |
598 | { |
599 | struct sockaddr_in addr; |
600 | #ifdef HAVE_IPV6 |
601 | struct sockaddr_in6 addr6; |
602 | #endif |
603 | struct socket *(*csfunc)(int, struct sockaddr *, socklen_t, void (*)(struct socket *, struct socket *, void *), void *); |
604 | struct socket *ret; |
605 | |
606 | if(local) |
607 | csfunc = netcslistenlocal; |
608 | else |
609 | csfunc = netcslisten; |
610 | #ifdef HAVE_IPV6 |
611 | memset(&addr6, 0, sizeof(addr6)); |
612 | addr6.sin6_family = AF_INET6; |
613 | addr6.sin6_port = htons(port); |
614 | addr6.sin6_addr = in6addr_any; |
615 | if((ret = csfunc(SOCK_STREAM, (struct sockaddr *)&addr6, sizeof(addr6), func, data)) != NULL) |
616 | return(ret); |
617 | if((ret == NULL) && (errno != EAFNOSUPPORT)) |
618 | return(NULL); |
619 | #endif |
620 | memset(&addr, 0, sizeof(addr)); |
621 | addr.sin_family = AF_INET; |
622 | addr.sin_port = htons(port); |
623 | return(csfunc(SOCK_STREAM, (struct sockaddr *)&addr, sizeof(addr), func, data)); |
624 | } |
625 | |
d3372da9 |
626 | struct socket *netcsdgram(struct sockaddr *name, socklen_t namelen) |
627 | { |
628 | struct socket *sk; |
629 | int mode; |
630 | |
631 | mode = confgetint("net", "mode"); |
632 | if((mode == 0) || (mode == 1)) |
633 | { |
634 | if((sk = mksock(name->sa_family, SOCK_DGRAM)) == NULL) |
635 | return(NULL); |
636 | if(bind(sk->fd, name, namelen) < 0) |
637 | { |
638 | putsock(sk); |
639 | return(NULL); |
640 | } |
641 | sk->state = SOCK_EST; |
642 | return(sk); |
643 | } |
644 | errno = EOPNOTSUPP; |
645 | return(NULL); |
646 | } |
647 | |
648 | struct socket *netdupsock(struct socket *sk) |
649 | { |
650 | struct socket *newsk; |
651 | |
652 | newsk = newsock(sk->type); |
653 | if((newsk->fd = dup(sk->fd)) < 0) |
654 | { |
655 | flog(LOG_WARNING, "could not dup() socket: %s", strerror(errno)); |
656 | putsock(newsk); |
657 | return(NULL); |
658 | } |
659 | newsk->state = sk->state; |
660 | newsk->ignread = sk->ignread; |
661 | if(sk->remote != NULL) |
662 | memcpy(newsk->remote = smalloc(sk->remotelen), sk->remote, newsk->remotelen = sk->remotelen); |
663 | return(newsk); |
664 | } |
665 | |
666 | void netdgramconn(struct socket *sk, struct sockaddr *addr, socklen_t addrlen) |
667 | { |
668 | if(sk->remote != NULL) |
669 | free(sk->remote); |
670 | memcpy(sk->remote = smalloc(addrlen), addr, sk->remotelen = addrlen); |
671 | sk->ignread = 1; |
672 | } |
673 | |
674 | struct socket *netcsconn(struct sockaddr *addr, socklen_t addrlen, void (*func)(struct socket *, int, void *), void *data) |
675 | { |
676 | struct socket *sk; |
677 | int mode; |
678 | |
679 | mode = confgetint("net", "mode"); |
680 | if((mode == 0) || (mode == 1)) |
681 | { |
682 | if((sk = mksock(addr->sa_family, SOCK_STREAM)) == NULL) |
683 | return(NULL); |
684 | memcpy(sk->remote = smalloc(addrlen), addr, sk->remotelen = addrlen); |
685 | if(!connect(sk->fd, addr, addrlen)) |
686 | { |
687 | sk->state = SOCK_EST; |
688 | func(sk, 0, data); |
689 | return(sk); |
690 | } |
691 | if(errno == EINPROGRESS) |
692 | { |
693 | sk->state = SOCK_SYN; |
694 | sk->conncb = func; |
695 | sk->data = data; |
696 | return(sk); |
697 | } |
698 | putsock(sk); |
699 | return(NULL); |
700 | } |
701 | errno = EOPNOTSUPP; |
702 | return(NULL); |
703 | } |
704 | |
705 | int pollsocks(int timeout) |
706 | { |
eaa35963 |
707 | int i, num, ret; |
708 | socklen_t retlen; |
d3372da9 |
709 | int newfd; |
710 | struct pollfd *pfds; |
711 | struct socket *sk, *next, *newsk; |
712 | struct sockaddr_storage ss; |
713 | socklen_t sslen; |
714 | |
715 | pfds = smalloc(sizeof(*pfds) * (num = numsocks)); |
716 | for(i = 0, sk = sockets; i < num; sk = sk->next) |
717 | { |
718 | if(sk->state == SOCK_STL) |
719 | { |
720 | num--; |
721 | continue; |
722 | } |
723 | pfds[i].fd = sk->fd; |
724 | pfds[i].events = 0; |
725 | if(!sk->ignread) |
726 | pfds[i].events |= POLLIN; |
727 | if((sk->state == SOCK_SYN) || (sockqueuesize(sk) > 0)) |
728 | pfds[i].events |= POLLOUT; |
729 | pfds[i].revents = 0; |
730 | i++; |
731 | } |
732 | ret = poll(pfds, num, timeout); |
733 | if(ret < 0) |
734 | { |
735 | if(errno != EINTR) |
736 | { |
737 | flog(LOG_CRIT, "pollsocks: poll errored out: %s", strerror(errno)); |
738 | /* To avoid CPU hogging in case it's bad, which it |
739 | * probably is. */ |
740 | sleep(1); |
741 | } |
742 | free(pfds); |
743 | return(1); |
744 | } |
745 | for(sk = sockets; sk != NULL; sk = next) |
746 | { |
747 | next = sk->next; |
748 | for(i = 0; i < num; i++) |
749 | { |
750 | if(pfds[i].fd == sk->fd) |
751 | break; |
752 | } |
753 | if(i == num) |
754 | continue; |
755 | switch(sk->state) |
756 | { |
757 | case SOCK_LST: |
758 | if(pfds[i].revents & POLLIN) |
759 | { |
760 | sslen = sizeof(ss); |
761 | if((newfd = accept(sk->fd, (struct sockaddr *)&ss, &sslen)) < 0) |
762 | { |
763 | if(sk->errcb != NULL) |
764 | sk->errcb(sk, errno, sk->data); |
765 | } |
766 | newsk = newsock(sk->type); |
767 | newsk->fd = newfd; |
768 | newsk->family = sk->family; |
769 | newsk->state = SOCK_EST; |
770 | memcpy(newsk->remote = smalloc(sslen), &ss, sslen); |
771 | newsk->remotelen = sslen; |
772 | putsock(newsk); |
773 | if(sk->acceptcb != NULL) |
774 | sk->acceptcb(sk, newsk, sk->data); |
775 | } |
776 | if(pfds[i].revents & POLLERR) |
777 | { |
778 | retlen = sizeof(ret); |
779 | getsockopt(sk->fd, SOL_SOCKET, SO_ERROR, &ret, &retlen); |
780 | if(sk->errcb != NULL) |
781 | sk->errcb(sk, ret, sk->data); |
782 | continue; |
783 | } |
784 | break; |
785 | case SOCK_SYN: |
786 | if(pfds[i].revents & POLLERR) |
787 | { |
788 | retlen = sizeof(ret); |
789 | getsockopt(sk->fd, SOL_SOCKET, SO_ERROR, &ret, &retlen); |
790 | if(sk->conncb != NULL) |
791 | sk->conncb(sk, ret, sk->data); |
792 | closesock(sk); |
793 | continue; |
794 | } |
795 | if(pfds[i].revents & (POLLIN | POLLOUT)) |
796 | { |
797 | sk->state = SOCK_EST; |
798 | if(sk->conncb != NULL) |
799 | sk->conncb(sk, 0, sk->data); |
800 | } |
801 | break; |
802 | case SOCK_EST: |
803 | if(pfds[i].revents & POLLERR) |
804 | { |
805 | retlen = sizeof(ret); |
806 | getsockopt(sk->fd, SOL_SOCKET, SO_ERROR, &ret, &retlen); |
807 | if(sk->errcb != NULL) |
808 | sk->errcb(sk, ret, sk->data); |
809 | closesock(sk); |
810 | continue; |
811 | } |
812 | if(pfds[i].revents & POLLIN) |
813 | sockrecv(sk); |
814 | if(pfds[i].revents & POLLOUT) |
815 | { |
816 | if(sockqueuesize(sk) > 0) |
817 | sockflush(sk); |
818 | } |
819 | break; |
820 | } |
821 | if(pfds[i].revents & POLLNVAL) |
822 | { |
823 | flog(LOG_CRIT, "BUG: stale socket struct on fd %i", sk->fd); |
824 | sk->state = SOCK_STL; |
825 | unlinksock(sk); |
826 | continue; |
827 | } |
828 | if(pfds[i].revents & POLLHUP) |
829 | { |
830 | if(sk->errcb != NULL) |
831 | sk->errcb(sk, 0, sk->data); |
832 | closesock(sk); |
833 | unlinksock(sk); |
834 | continue; |
835 | } |
836 | } |
837 | free(pfds); |
838 | for(sk = sockets; sk != NULL; sk = next) |
839 | { |
840 | next = sk->next; |
841 | if(sk->refcount == 1 && (sockqueuesize(sk) == 0)) |
842 | { |
843 | unlinksock(sk); |
844 | continue; |
845 | } |
846 | if(sk->close && (sockqueuesize(sk) == 0)) |
847 | closesock(sk); |
848 | if(sk->state == SOCK_STL) |
849 | { |
850 | unlinksock(sk); |
851 | continue; |
852 | } |
853 | } |
854 | return(1); |
855 | } |
856 | |
857 | int socksettos(struct socket *sk, int tos) |
858 | { |
b020fb3d |
859 | int buf; |
860 | |
d3372da9 |
861 | if(sk->family == AF_INET) |
862 | { |
b020fb3d |
863 | switch(tos) |
864 | { |
b198bed6 |
865 | case 0: |
866 | buf = 0; |
867 | break; |
b020fb3d |
868 | case SOCK_TOS_MINCOST: |
18c1ae1d |
869 | buf = 0x02; |
b020fb3d |
870 | break; |
871 | case SOCK_TOS_MAXREL: |
18c1ae1d |
872 | buf = 0x04; |
b020fb3d |
873 | break; |
874 | case SOCK_TOS_MAXTP: |
18c1ae1d |
875 | buf = 0x08; |
b020fb3d |
876 | break; |
877 | case SOCK_TOS_MINDELAY: |
18c1ae1d |
878 | buf = 0x10; |
b020fb3d |
879 | break; |
880 | default: |
881 | flog(LOG_WARNING, "attempted to set unknown TOS value %i to IPv4 sock", tos); |
882 | return(-1); |
883 | } |
884 | if(setsockopt(sk->fd, SOL_IP, IP_TOS, &buf, sizeof(buf)) < 0) |
d3372da9 |
885 | { |
886 | flog(LOG_WARNING, "could not set sock TOS to %i: %s", tos, strerror(errno)); |
887 | return(-1); |
888 | } |
889 | return(0); |
890 | } |
b020fb3d |
891 | if(sk->family == AF_INET6) |
892 | { |
893 | switch(tos) |
894 | { |
b198bed6 |
895 | case 0: |
896 | buf = 0; |
b020fb3d |
897 | case SOCK_TOS_MINCOST: |
898 | buf = confgetint("net", "diffserv-mincost"); |
899 | break; |
900 | case SOCK_TOS_MAXREL: |
901 | buf = confgetint("net", "diffserv-maxrel"); |
902 | break; |
903 | case SOCK_TOS_MAXTP: |
904 | buf = confgetint("net", "diffserv-maxtp"); |
905 | break; |
906 | case SOCK_TOS_MINDELAY: |
907 | buf = confgetint("net", "diffserv-mindelay"); |
908 | break; |
909 | default: |
910 | flog(LOG_WARNING, "attempted to set unknown TOS value %i to IPv4 sock", tos); |
911 | return(-1); |
912 | } |
913 | /* |
914 | On Linux, the API IPv6 flow label management doesn't seem to |
915 | be entirely complete, so I guess this will have to wait. |
916 | |
917 | if(setsockopt(...) < 0) |
918 | { |
919 | flog(LOG_WARNING, "could not set sock traffic class to %i: %s", tos, strerror(errno)); |
920 | return(-1); |
921 | } |
922 | */ |
923 | return(0); |
924 | } |
d3372da9 |
925 | flog(LOG_WARNING, "could not set TOS on sock of family %i", sk->family); |
926 | return(1); |
927 | } |
928 | |
929 | struct resolvedata |
930 | { |
931 | int fd; |
932 | void (*callback)(struct sockaddr *addr, int addrlen, void *data); |
933 | void *data; |
934 | struct sockaddr_storage addr; |
935 | int addrlen; |
936 | }; |
937 | |
938 | static void resolvecb(pid_t pid, int status, struct resolvedata *data) |
939 | { |
940 | static char buf[80]; |
941 | int ret; |
942 | struct sockaddr_in *ipv4; |
943 | |
944 | if(!status) |
945 | { |
946 | if((ret = read(data->fd, buf, sizeof(buf))) != 4) |
947 | { |
948 | errno = ENONET; |
949 | data->callback(NULL, 0, data->data); |
950 | } else { |
951 | ipv4 = (struct sockaddr_in *)&data->addr; |
952 | memcpy(&ipv4->sin_addr, buf, 4); |
953 | data->callback((struct sockaddr *)ipv4, sizeof(*ipv4), data->data); |
954 | } |
955 | } else { |
956 | errno = ENONET; |
957 | data->callback(NULL, 0, data->data); |
958 | } |
959 | close(data->fd); |
960 | free(data); |
961 | } |
962 | |
963 | int netresolve(char *addr, void (*callback)(struct sockaddr *addr, int addrlen, void *data), void *data) |
964 | { |
965 | int i; |
966 | char *p; |
967 | int port; |
968 | int pfd[2]; |
969 | pid_t child; |
970 | struct resolvedata *rdata; |
971 | struct sockaddr_in ipv4; |
972 | struct hostent *he; |
973 | sigset_t sigset; |
974 | |
975 | /* IPv4 */ |
976 | port = -1; |
977 | if((p = strchr(addr, ':')) != NULL) |
978 | { |
979 | *p = 0; |
980 | port = atoi(p + 1); |
981 | } |
982 | ipv4.sin_family = AF_INET; |
983 | ipv4.sin_port = htons(port); |
984 | if(inet_aton(addr, &ipv4.sin_addr)) |
985 | { |
986 | callback((struct sockaddr *)&ipv4, sizeof(ipv4), data); |
987 | } else { |
988 | sigemptyset(&sigset); |
989 | sigaddset(&sigset, SIGCHLD); |
990 | sigprocmask(SIG_BLOCK, &sigset, NULL); |
991 | if((pipe(pfd) < 0) || ((child = fork()) < 0)) |
992 | { |
993 | sigprocmask(SIG_UNBLOCK, &sigset, NULL); |
994 | return(-1); |
995 | } |
996 | if(child == 0) |
997 | { |
998 | sigprocmask(SIG_UNBLOCK, &sigset, NULL); |
999 | for(i = 3; i < FD_SETSIZE; i++) |
1000 | { |
1001 | if(i != pfd[1]) |
1002 | close(i); |
1003 | } |
1004 | signal(SIGALRM, SIG_DFL); |
1005 | alarm(30); |
1006 | if((he = gethostbyname(addr)) == NULL) |
1007 | exit(1); |
1008 | write(pfd[1], he->h_addr_list[0], 4); |
1009 | exit(0); |
1010 | } else { |
1011 | close(pfd[1]); |
1012 | fcntl(pfd[0], F_SETFL, fcntl(pfd[0], F_GETFL) | O_NONBLOCK); |
1013 | rdata = smalloc(sizeof(*rdata)); |
1014 | rdata->fd = pfd[0]; |
1015 | rdata->callback = callback; |
1016 | rdata->data = data; |
1017 | memcpy(&rdata->addr, &ipv4, rdata->addrlen = sizeof(ipv4)); |
1018 | childcallback(child, (void (*)(pid_t, int, void *))resolvecb, rdata); |
1019 | sigprocmask(SIG_UNBLOCK, &sigset, NULL); |
1020 | return(1); |
1021 | } |
1022 | } |
1023 | return(0); |
1024 | } |
1025 | |
1026 | int sockgetlocalname(struct socket *sk, struct sockaddr **namebuf, socklen_t *lenbuf) |
1027 | { |
1028 | socklen_t len; |
1029 | struct sockaddr_storage name; |
1030 | |
1031 | *namebuf = NULL; |
1032 | if((sk->state == SOCK_STL) || (sk->fd < 0)) |
1033 | return(-1); |
1034 | len = sizeof(name); |
1035 | if(getsockname(sk->fd, (struct sockaddr *)&name, &len) < 0) |
1036 | { |
6fb0c6ac |
1037 | flog(LOG_ERR, "BUG: alive socket with dead fd in sockgetlocalname (%s)", strerror(errno)); |
d3372da9 |
1038 | return(-1); |
1039 | } |
1040 | *namebuf = memcpy(smalloc(len), &name, len); |
1041 | *lenbuf = len; |
1042 | return(0); |
1043 | } |
1044 | |
eaa35963 |
1045 | static void sethostaddr(struct sockaddr *dst, struct sockaddr *src) |
1046 | { |
1047 | if(dst->sa_family != src->sa_family) |
1048 | { |
1049 | flog(LOG_ERR, "BUG: non-matching socket families in sethostaddr (%i -> %i)", src->sa_family, dst->sa_family); |
1050 | return; |
1051 | } |
1052 | switch(src->sa_family) |
1053 | { |
1054 | case AF_INET: |
1055 | ((struct sockaddr_in *)dst)->sin_addr = ((struct sockaddr_in *)src)->sin_addr; |
1056 | break; |
1057 | case AF_INET6: |
1058 | ((struct sockaddr_in6 *)dst)->sin6_addr = ((struct sockaddr_in6 *)src)->sin6_addr; |
1059 | break; |
1060 | default: |
1061 | flog(LOG_WARNING, "sethostaddr unimplemented for family %i", src->sa_family); |
1062 | break; |
1063 | } |
1064 | } |
1065 | |
1066 | static int makepublic(struct sockaddr *addr) |
d3372da9 |
1067 | { |
6fb0c6ac |
1068 | int ret; |
eaa35963 |
1069 | socklen_t plen; |
1070 | struct sockaddr *pname; |
1071 | |
1072 | if((ret = getpublicaddr(addr->sa_family, &pname, &plen)) < 0) |
1073 | { |
1074 | flog(LOG_ERR, "could not get public address: %s", strerror(errno)); |
1075 | return(-1); |
1076 | } |
1077 | if(ret) |
1078 | return(0); |
1079 | sethostaddr(addr, pname); |
1080 | free(pname); |
1081 | return(0); |
1082 | } |
1083 | |
1084 | int sockgetremotename(struct socket *sk, struct sockaddr **namebuf, socklen_t *lenbuf) |
1085 | { |
d3372da9 |
1086 | socklen_t len; |
6fb0c6ac |
1087 | struct sockaddr *name; |
d3372da9 |
1088 | |
1089 | switch(confgetint("net", "mode")) |
1090 | { |
1091 | case 0: |
1092 | *namebuf = NULL; |
1093 | if((sk->state == SOCK_STL) || (sk->fd < 0)) |
d3372da9 |
1094 | { |
eaa35963 |
1095 | errno = EBADF; |
d3372da9 |
1096 | return(-1); |
1097 | } |
6fb0c6ac |
1098 | if(!sockgetlocalname(sk, &name, &len)) |
1099 | { |
1100 | *namebuf = name; |
1101 | *lenbuf = len; |
eaa35963 |
1102 | makepublic(name); |
6fb0c6ac |
1103 | return(0); |
1104 | } |
1105 | flog(LOG_ERR, "could not get remotely accessible name by any means"); |
1106 | return(-1); |
d3372da9 |
1107 | case 1: |
1108 | errno = EOPNOTSUPP; |
1109 | return(-1); |
1110 | default: |
1111 | flog(LOG_CRIT, "unknown net mode %i active", confgetint("net", "mode")); |
1112 | errno = EOPNOTSUPP; |
1113 | return(-1); |
1114 | } |
1115 | } |
1116 | |
d29853b1 |
1117 | int sockgetremotename2(struct socket *sk, struct socket *sk2, struct sockaddr **namebuf, socklen_t *lenbuf) |
1118 | { |
1119 | struct sockaddr *name1, *name2; |
1120 | socklen_t len1, len2; |
1121 | |
1122 | if(sk->family != sk2->family) |
1123 | { |
1124 | flog(LOG_ERR, "using sockgetremotename2 with sockets of differing family: %i %i", sk->family, sk2->family); |
1125 | return(-1); |
1126 | } |
3804379d |
1127 | if(sockgetremotename(sk, &name1, &len1)) |
d29853b1 |
1128 | return(-1); |
3804379d |
1129 | if(sockgetremotename(sk2, &name2, &len2)) { |
d29853b1 |
1130 | free(name1); |
1131 | return(-1); |
1132 | } |
1133 | sethostaddr(name1, name2); |
1134 | free(name2); |
1135 | *namebuf = name1; |
1136 | *lenbuf = len1; |
1137 | return(0); |
1138 | } |
1139 | |
99a28d47 |
1140 | int addreq(struct sockaddr *x, struct sockaddr *y) |
1141 | { |
1142 | struct sockaddr_un *u1, *u2; |
1143 | struct sockaddr_in *n1, *n2; |
1144 | #ifdef HAVE_IPV6 |
1145 | struct sockaddr_in6 *s1, *s2; |
1146 | #endif |
1147 | |
1148 | if(x->sa_family != y->sa_family) |
1149 | return(0); |
1150 | switch(x->sa_family) { |
1151 | case AF_UNIX: |
1152 | u1 = (struct sockaddr_un *)x; u2 = (struct sockaddr_un *)y; |
1153 | if(strncmp(u1->sun_path, u2->sun_path, sizeof(u1->sun_path))) |
1154 | return(0); |
1155 | break; |
1156 | case AF_INET: |
1157 | n1 = (struct sockaddr_in *)x; n2 = (struct sockaddr_in *)y; |
1158 | if(n1->sin_port != n2->sin_port) |
1159 | return(0); |
1160 | if(n1->sin_addr.s_addr != n2->sin_addr.s_addr) |
1161 | return(0); |
1162 | break; |
c8a729d7 |
1163 | #ifdef HAVE_IPV6 |
99a28d47 |
1164 | case AF_INET6: |
1165 | s1 = (struct sockaddr_in6 *)x; s2 = (struct sockaddr_in6 *)y; |
1166 | if(s1->sin6_port != s2->sin6_port) |
1167 | return(0); |
1168 | if(memcmp(s1->sin6_addr.s6_addr, s2->sin6_addr.s6_addr, sizeof(s1->sin6_addr.s6_addr))) |
1169 | return(0); |
1170 | break; |
c8a729d7 |
1171 | #endif |
99a28d47 |
1172 | } |
1173 | return(1); |
1174 | } |
1175 | |
d3372da9 |
1176 | char *formataddress(struct sockaddr *arg, socklen_t arglen) |
1177 | { |
1178 | struct sockaddr_un *UNIX; /* Some wise guy has #defined unix with |
1179 | * lowercase letters to 1, so I do this |
1180 | * instead. */ |
1181 | struct sockaddr_in *ipv4; |
1182 | #ifdef HAVE_IPV6 |
1183 | struct sockaddr_in6 *ipv6; |
1184 | #endif |
1185 | static char *ret = NULL; |
1186 | char buf[1024]; |
1187 | |
1188 | if(ret != NULL) |
1189 | free(ret); |
1190 | ret = NULL; |
1191 | switch(arg->sa_family) |
1192 | { |
1193 | case AF_UNIX: |
1194 | UNIX = (struct sockaddr_un *)arg; |
1195 | ret = sprintf2("%s", UNIX->sun_path); |
1196 | break; |
1197 | case AF_INET: |
1198 | ipv4 = (struct sockaddr_in *)arg; |
1199 | if(inet_ntop(AF_INET, &ipv4->sin_addr, buf, sizeof(buf)) == NULL) |
1200 | return(NULL); |
1201 | ret = sprintf2("%s:%i", buf, (int)ntohs(ipv4->sin_port)); |
1202 | break; |
1203 | #ifdef HAVE_IPV6 |
1204 | case AF_INET6: |
1205 | ipv6 = (struct sockaddr_in6 *)arg; |
1206 | if(inet_ntop(AF_INET6, &ipv6->sin6_addr, buf, sizeof(buf)) == NULL) |
1207 | return(NULL); |
fc7f7735 |
1208 | ret = sprintf2("[%s]:%i", buf, (int)ntohs(ipv6->sin6_port)); |
d3372da9 |
1209 | break; |
1210 | #endif |
1211 | default: |
1212 | errno = EPFNOSUPPORT; |
1213 | break; |
1214 | } |
1215 | return(ret); |
1216 | } |
1217 | |
1218 | #if 0 |
1219 | |
1220 | /* |
1221 | * It was very nice to use this, but it seems |
1222 | * to mess things up, so I guess it has to go... :-( |
1223 | */ |
1224 | |
1225 | static int formataddress(FILE *stream, const struct printf_info *info, const void *const *args) |
1226 | { |
1227 | struct sockaddr *arg; |
1228 | socklen_t arglen; |
1229 | struct sockaddr_un *UNIX; /* Some wise guy has #defined unix with |
1230 | * lowercase letters to 1, so I do this |
1231 | * instead. */ |
1232 | struct sockaddr_in *ipv4; |
1233 | int ret; |
1234 | |
1235 | arg = *(struct sockaddr **)(args[0]); |
1236 | arglen = *(socklen_t *)(args[1]); |
1237 | switch(arg->sa_family) |
1238 | { |
1239 | case AF_UNIX: |
1240 | UNIX = (struct sockaddr_un *)arg; |
1241 | ret = fprintf(stream, "%s", UNIX->sun_path); |
1242 | break; |
1243 | case AF_INET: |
1244 | ipv4 = (struct sockaddr_in *)arg; |
1245 | ret = fprintf(stream, "%s:%i", inet_ntoa(ipv4->sin_addr), (int)ntohs(ipv4->sin_port)); |
1246 | break; |
1247 | default: |
1248 | ret = -1; |
1249 | errno = EPFNOSUPPORT; |
1250 | break; |
1251 | } |
1252 | return(ret); |
1253 | } |
1254 | |
1255 | static int formataddress_arginfo(const struct printf_info *info, size_t n, int *argtypes) |
1256 | { |
1257 | if(n > 0) |
1258 | argtypes[0] = PA_POINTER; |
1259 | if(n > 1) |
1260 | argtypes[1] = PA_INT; /* Sources tell me that socklen_t _must_ |
1261 | * be an int, so I guess this should be |
1262 | * safe. */ |
1263 | return(2); |
1264 | } |
1265 | #endif |
1266 | |
1267 | static int init(int hup) |
1268 | { |
1269 | if(!hup) |
1270 | { |
1271 | /* |
1272 | if(register_printf_function('N', formataddress, formataddress_arginfo)) |
1273 | { |
1274 | flog(LOG_CRIT, "could not register printf handler %%N: %s", strerror(errno)); |
1275 | return(1); |
1276 | } |
1277 | */ |
1278 | } |
1279 | return(0); |
1280 | } |
1281 | |
1282 | static void terminate(void) |
1283 | { |
1284 | while(sockets != NULL) |
1285 | unlinksock(sockets); |
1286 | } |
1287 | |
1288 | static struct module me = |
1289 | { |
1290 | .name = "net", |
1291 | .conf = |
1292 | { |
1293 | .vars = myvars |
1294 | }, |
1295 | .init = init, |
1296 | .terminate = terminate |
1297 | }; |
1298 | |
1299 | MODULE(me) |