Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 :
4 : Socket IPv4/IPv6 functions
5 :
6 : Copyright (C) Stefan Metzmacher 2004
7 : Copyright (C) Andrew Tridgell 2004-2005
8 : Copyright (C) Jelmer Vernooij 2004
9 :
10 : This program is free software; you can redistribute it and/or modify
11 : it under the terms of the GNU General Public License as published by
12 : the Free Software Foundation; either version 3 of the License, or
13 : (at your option) any later version.
14 :
15 : This program is distributed in the hope that it will be useful,
16 : but WITHOUT ANY WARRANTY; without even the implied warranty of
17 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 : GNU General Public License for more details.
19 :
20 : You should have received a copy of the GNU General Public License
21 : along with this program. If not, see <http://www.gnu.org/licenses/>.
22 : */
23 :
24 : #include "includes.h"
25 : #include "system/filesys.h"
26 : #include "lib/socket/socket.h"
27 : #include "system/network.h"
28 : #include "lib/util/util_net.h"
29 :
30 : #undef strcasecmp
31 :
32 : _PUBLIC_ const struct socket_ops *socket_ipv4_ops(enum socket_type type);
33 : _PUBLIC_ const struct socket_ops *socket_ipv6_ops(enum socket_type type);
34 :
35 126887 : static NTSTATUS ipv4_init(struct socket_context *sock)
36 : {
37 : int type;
38 :
39 126887 : switch (sock->type) {
40 90837 : case SOCKET_TYPE_STREAM:
41 90837 : type = SOCK_STREAM;
42 90837 : break;
43 33748 : case SOCKET_TYPE_DGRAM:
44 33748 : type = SOCK_DGRAM;
45 33748 : break;
46 0 : default:
47 0 : return NT_STATUS_INVALID_PARAMETER;
48 : }
49 :
50 126887 : sock->fd = socket(PF_INET, type, 0);
51 126887 : if (sock->fd == -1) {
52 0 : return map_nt_error_from_unix_common(errno);
53 : }
54 :
55 126887 : smb_set_close_on_exec(sock->fd);
56 :
57 126887 : sock->backend_name = "ipv4";
58 126887 : sock->family = AF_INET;
59 :
60 126887 : return NT_STATUS_OK;
61 : }
62 :
63 95037 : static void ip_close(struct socket_context *sock)
64 : {
65 95037 : if (sock->fd != -1) {
66 80350 : close(sock->fd);
67 80350 : sock->fd = -1;
68 : }
69 95037 : }
70 :
71 405844 : static NTSTATUS ip_connect_complete(struct socket_context *sock, uint32_t flags)
72 : {
73 405844 : int error=0, ret;
74 405844 : socklen_t len = sizeof(error);
75 :
76 : /* check for any errors that may have occurred - this is needed
77 : for non-blocking connect */
78 405844 : ret = getsockopt(sock->fd, SOL_SOCKET, SO_ERROR, &error, &len);
79 405844 : if (ret == -1) {
80 0 : return map_nt_error_from_unix_common(errno);
81 : }
82 405844 : if (error != 0) {
83 0 : return map_nt_error_from_unix_common(error);
84 : }
85 :
86 405844 : ret = set_blocking(sock->fd, false);
87 405844 : if (ret == -1) {
88 0 : return map_nt_error_from_unix_common(errno);
89 : }
90 :
91 405844 : sock->state = SOCKET_STATE_CLIENT_CONNECTED;
92 :
93 405844 : return NT_STATUS_OK;
94 : }
95 :
96 :
97 117562 : static NTSTATUS ipv4_connect(struct socket_context *sock,
98 : const struct socket_address *my_address,
99 : const struct socket_address *srv_address,
100 : uint32_t flags)
101 : {
102 : struct sockaddr_in srv_addr;
103 : struct in_addr my_ip;
104 : struct in_addr srv_ip;
105 : int ret;
106 :
107 117562 : if (my_address && my_address->sockaddr) {
108 0 : ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
109 0 : if (ret == -1) {
110 0 : return map_nt_error_from_unix_common(errno);
111 : }
112 117562 : } else if (my_address) {
113 285 : my_ip = interpret_addr2(my_address->addr);
114 :
115 285 : if (my_ip.s_addr != 0 || my_address->port != 0) {
116 : struct sockaddr_in my_addr;
117 285 : ZERO_STRUCT(my_addr);
118 : #ifdef HAVE_SOCK_SIN_LEN
119 : my_addr.sin_len = sizeof(my_addr);
120 : #endif
121 285 : my_addr.sin_addr.s_addr = my_ip.s_addr;
122 285 : my_addr.sin_port = htons(my_address->port);
123 285 : my_addr.sin_family = PF_INET;
124 :
125 285 : ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
126 285 : if (ret == -1) {
127 0 : return map_nt_error_from_unix_common(errno);
128 : }
129 : }
130 : }
131 :
132 117562 : if (srv_address->sockaddr) {
133 75951 : ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
134 75951 : if (ret == -1) {
135 0 : return map_nt_error_from_unix_common(errno);
136 : }
137 : } else {
138 41611 : srv_ip = interpret_addr2(srv_address->addr);
139 41611 : if (!srv_ip.s_addr) {
140 0 : return NT_STATUS_BAD_NETWORK_NAME;
141 : }
142 :
143 41611 : SMB_ASSERT(srv_address->port != 0);
144 :
145 41611 : ZERO_STRUCT(srv_addr);
146 : #ifdef HAVE_SOCK_SIN_LEN
147 : srv_addr.sin_len = sizeof(srv_addr);
148 : #endif
149 41611 : srv_addr.sin_addr.s_addr= srv_ip.s_addr;
150 41611 : srv_addr.sin_port = htons(srv_address->port);
151 41611 : srv_addr.sin_family = PF_INET;
152 :
153 41611 : ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
154 41611 : if (ret == -1) {
155 163 : return map_nt_error_from_unix_common(errno);
156 : }
157 : }
158 :
159 117399 : return ip_connect_complete(sock, flags);
160 : }
161 :
162 :
163 : /*
164 : note that for simplicity of the API, socket_listen() is also
165 : use for DGRAM sockets, but in reality only a bind() is done
166 : */
167 1101 : static NTSTATUS ipv4_listen(struct socket_context *sock,
168 : const struct socket_address *my_address,
169 : int queue_size, uint32_t flags)
170 : {
171 : struct sockaddr_in my_addr;
172 : struct in_addr ip_addr;
173 : int ret;
174 :
175 1101 : socket_set_option(sock, "SO_REUSEADDR=1", NULL);
176 :
177 1101 : if (my_address->sockaddr) {
178 0 : ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
179 : } else {
180 1101 : ip_addr = interpret_addr2(my_address->addr);
181 :
182 1101 : ZERO_STRUCT(my_addr);
183 : #ifdef HAVE_SOCK_SIN_LEN
184 : my_addr.sin_len = sizeof(my_addr);
185 : #endif
186 1101 : my_addr.sin_addr.s_addr = ip_addr.s_addr;
187 1101 : my_addr.sin_port = htons(my_address->port);
188 1101 : my_addr.sin_family = PF_INET;
189 :
190 1101 : ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
191 : }
192 :
193 1101 : if (ret == -1) {
194 0 : return map_nt_error_from_unix_common(errno);
195 : }
196 :
197 1101 : if (sock->type == SOCKET_TYPE_STREAM) {
198 679 : ret = listen(sock->fd, queue_size);
199 679 : if (ret == -1) {
200 0 : return map_nt_error_from_unix_common(errno);
201 : }
202 : }
203 :
204 1101 : ret = set_blocking(sock->fd, false);
205 1101 : if (ret == -1) {
206 0 : return map_nt_error_from_unix_common(errno);
207 : }
208 :
209 1101 : sock->state= SOCKET_STATE_SERVER_LISTEN;
210 :
211 1101 : return NT_STATUS_OK;
212 : }
213 :
214 98841 : static NTSTATUS ipv4_accept(struct socket_context *sock, struct socket_context **new_sock)
215 : {
216 : struct sockaddr_in cli_addr;
217 98841 : socklen_t cli_addr_len = sizeof(cli_addr);
218 : int new_fd, ret;
219 :
220 98841 : if (sock->type != SOCKET_TYPE_STREAM) {
221 0 : return NT_STATUS_INVALID_PARAMETER;
222 : }
223 :
224 98841 : new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
225 98841 : if (new_fd == -1) {
226 12636 : return map_nt_error_from_unix_common(errno);
227 : }
228 :
229 86205 : ret = set_blocking(new_fd, false);
230 86205 : if (ret == -1) {
231 0 : close(new_fd);
232 0 : return map_nt_error_from_unix_common(errno);
233 : }
234 :
235 86205 : smb_set_close_on_exec(new_fd);
236 :
237 :
238 : /* TODO: we could add a 'accept_check' hook here
239 : * which get the black/white lists via socket_set_accept_filter()
240 : * or something like that
241 : * --metze
242 : */
243 :
244 86205 : (*new_sock) = talloc(NULL, struct socket_context);
245 86205 : if (!(*new_sock)) {
246 0 : close(new_fd);
247 0 : return NT_STATUS_NO_MEMORY;
248 : }
249 :
250 : /* copy the socket_context */
251 86205 : (*new_sock)->type = sock->type;
252 86205 : (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
253 86205 : (*new_sock)->flags = sock->flags;
254 :
255 86205 : (*new_sock)->fd = new_fd;
256 :
257 86205 : (*new_sock)->private_data = NULL;
258 86205 : (*new_sock)->ops = sock->ops;
259 86205 : (*new_sock)->backend_name = sock->backend_name;
260 :
261 86205 : return NT_STATUS_OK;
262 : }
263 :
264 1830519 : static NTSTATUS ip_recv(struct socket_context *sock, void *buf,
265 : size_t wantlen, size_t *nread)
266 : {
267 : ssize_t gotlen;
268 :
269 1830519 : *nread = 0;
270 :
271 1835262 : gotlen = recv(sock->fd, buf, wantlen, 0);
272 1830519 : if (gotlen == 0) {
273 1993 : return NT_STATUS_END_OF_FILE;
274 1828526 : } else if (gotlen == -1) {
275 325 : return map_nt_error_from_unix_common(errno);
276 : }
277 :
278 1828201 : *nread = gotlen;
279 :
280 1828201 : return NT_STATUS_OK;
281 : }
282 :
283 :
284 13826 : static NTSTATUS ipv4_recvfrom(struct socket_context *sock, void *buf,
285 : size_t wantlen, size_t *nread,
286 : TALLOC_CTX *addr_ctx, struct socket_address **_src)
287 : {
288 : ssize_t gotlen;
289 : struct sockaddr_in *from_addr;
290 13826 : socklen_t from_len = sizeof(*from_addr);
291 : struct socket_address *src;
292 : char addrstring[INET_ADDRSTRLEN];
293 :
294 13826 : src = talloc(addr_ctx, struct socket_address);
295 13826 : if (!src) {
296 0 : return NT_STATUS_NO_MEMORY;
297 : }
298 :
299 13826 : src->family = sock->backend_name;
300 :
301 13826 : from_addr = talloc(src, struct sockaddr_in);
302 13826 : if (!from_addr) {
303 0 : talloc_free(src);
304 0 : return NT_STATUS_NO_MEMORY;
305 : }
306 :
307 13826 : src->sockaddr = (struct sockaddr *)from_addr;
308 :
309 13826 : *nread = 0;
310 :
311 13959 : gotlen = recvfrom(sock->fd, buf, wantlen, 0,
312 13693 : src->sockaddr, &from_len);
313 13826 : if (gotlen == 0) {
314 2 : talloc_free(src);
315 2 : return NT_STATUS_END_OF_FILE;
316 : }
317 13824 : if (gotlen == -1) {
318 0 : talloc_free(src);
319 0 : return map_nt_error_from_unix_common(errno);
320 : }
321 :
322 13824 : src->sockaddrlen = from_len;
323 :
324 13824 : if (inet_ntop(AF_INET, &from_addr->sin_addr, addrstring,
325 : sizeof(addrstring)) == NULL) {
326 0 : talloc_free(src);
327 0 : return NT_STATUS_INTERNAL_ERROR;
328 : }
329 13824 : src->addr = talloc_strdup(src, addrstring);
330 13824 : if (src->addr == NULL) {
331 0 : talloc_free(src);
332 0 : return NT_STATUS_NO_MEMORY;
333 : }
334 13824 : src->port = ntohs(from_addr->sin_port);
335 :
336 13824 : *nread = gotlen;
337 13824 : *_src = src;
338 13824 : return NT_STATUS_OK;
339 : }
340 :
341 2924560 : static NTSTATUS ip_send(struct socket_context *sock,
342 : const DATA_BLOB *blob, size_t *sendlen)
343 : {
344 : ssize_t len;
345 :
346 2924560 : *sendlen = 0;
347 :
348 2924560 : len = send(sock->fd, blob->data, blob->length, 0);
349 2924560 : if (len == -1) {
350 1917839 : return map_nt_error_from_unix_common(errno);
351 : }
352 :
353 1006721 : *sendlen = len;
354 :
355 1006721 : return NT_STATUS_OK;
356 : }
357 :
358 12845 : static NTSTATUS ipv4_sendto(struct socket_context *sock,
359 : const DATA_BLOB *blob, size_t *sendlen,
360 : const struct socket_address *dest_addr)
361 : {
362 : ssize_t len;
363 :
364 12845 : if (dest_addr->sockaddr) {
365 3226 : len = sendto(sock->fd, blob->data, blob->length, 0,
366 3226 : dest_addr->sockaddr, dest_addr->sockaddrlen);
367 : } else {
368 : struct sockaddr_in srv_addr;
369 : struct in_addr addr;
370 :
371 11052 : SMB_ASSERT(dest_addr->port != 0);
372 :
373 11052 : ZERO_STRUCT(srv_addr);
374 : #ifdef HAVE_SOCK_SIN_LEN
375 : srv_addr.sin_len = sizeof(srv_addr);
376 : #endif
377 11052 : addr = interpret_addr2(dest_addr->addr);
378 11052 : if (addr.s_addr == 0) {
379 67 : return NT_STATUS_HOST_UNREACHABLE;
380 : }
381 10985 : srv_addr.sin_addr.s_addr = addr.s_addr;
382 10985 : srv_addr.sin_port = htons(dest_addr->port);
383 10985 : srv_addr.sin_family = PF_INET;
384 :
385 10985 : *sendlen = 0;
386 :
387 10985 : len = sendto(sock->fd, blob->data, blob->length, 0,
388 : (struct sockaddr *)&srv_addr, sizeof(srv_addr));
389 : }
390 12778 : if (len == -1) {
391 7581 : return map_nt_error_from_unix_common(errno);
392 : }
393 :
394 5197 : *sendlen = len;
395 :
396 5197 : return NT_STATUS_OK;
397 : }
398 :
399 25744 : static NTSTATUS ipv4_set_option(struct socket_context *sock, const char *option, const char *val)
400 : {
401 25744 : set_socket_options(sock->fd, option);
402 25744 : return NT_STATUS_OK;
403 : }
404 :
405 0 : static char *ipv4_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
406 : {
407 : struct sockaddr_in peer_addr;
408 0 : socklen_t len = sizeof(peer_addr);
409 : struct hostent *he;
410 : int ret;
411 :
412 0 : ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
413 0 : if (ret == -1) {
414 0 : return NULL;
415 : }
416 :
417 0 : he = gethostbyaddr((char *)&peer_addr.sin_addr, sizeof(peer_addr.sin_addr), AF_INET);
418 0 : if (he == NULL) {
419 0 : return NULL;
420 : }
421 :
422 0 : return talloc_strdup(mem_ctx, he->h_name);
423 : }
424 :
425 101009 : static struct socket_address *ipv4_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
426 : {
427 : struct sockaddr_in *peer_addr;
428 101009 : socklen_t len = sizeof(*peer_addr);
429 : struct socket_address *peer;
430 : char addrstring[INET_ADDRSTRLEN];
431 : int ret;
432 :
433 101009 : peer = talloc(mem_ctx, struct socket_address);
434 101009 : if (!peer) {
435 0 : return NULL;
436 : }
437 :
438 101009 : peer->family = sock->backend_name;
439 101009 : peer_addr = talloc(peer, struct sockaddr_in);
440 101009 : if (!peer_addr) {
441 0 : talloc_free(peer);
442 0 : return NULL;
443 : }
444 :
445 101009 : peer->sockaddr = (struct sockaddr *)peer_addr;
446 :
447 101009 : ret = getpeername(sock->fd, peer->sockaddr, &len);
448 101009 : if (ret == -1) {
449 0 : talloc_free(peer);
450 0 : return NULL;
451 : }
452 :
453 101009 : peer->sockaddrlen = len;
454 :
455 101009 : if (inet_ntop(AF_INET, &peer_addr->sin_addr, addrstring,
456 : sizeof(addrstring)) == NULL) {
457 0 : talloc_free(peer);
458 0 : return NULL;
459 : }
460 101009 : peer->addr = talloc_strdup(peer, addrstring);
461 101009 : if (!peer->addr) {
462 0 : talloc_free(peer);
463 0 : return NULL;
464 : }
465 101009 : peer->port = ntohs(peer_addr->sin_port);
466 :
467 101009 : return peer;
468 : }
469 :
470 128248 : static struct socket_address *ipv4_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
471 : {
472 : struct sockaddr_in *local_addr;
473 128248 : socklen_t len = sizeof(*local_addr);
474 : struct socket_address *local;
475 : char addrstring[INET_ADDRSTRLEN];
476 : int ret;
477 :
478 128248 : local = talloc(mem_ctx, struct socket_address);
479 128248 : if (!local) {
480 0 : return NULL;
481 : }
482 :
483 128248 : local->family = sock->backend_name;
484 128248 : local_addr = talloc(local, struct sockaddr_in);
485 128248 : if (!local_addr) {
486 0 : talloc_free(local);
487 0 : return NULL;
488 : }
489 :
490 128248 : local->sockaddr = (struct sockaddr *)local_addr;
491 :
492 128248 : ret = getsockname(sock->fd, local->sockaddr, &len);
493 128248 : if (ret == -1) {
494 0 : talloc_free(local);
495 0 : return NULL;
496 : }
497 :
498 128248 : local->sockaddrlen = len;
499 :
500 128248 : if (inet_ntop(AF_INET, &local_addr->sin_addr, addrstring,
501 : sizeof(addrstring)) == NULL) {
502 0 : talloc_free(local);
503 0 : return NULL;
504 : }
505 128248 : local->addr = talloc_strdup(local, addrstring);
506 128248 : if (!local->addr) {
507 0 : talloc_free(local);
508 0 : return NULL;
509 : }
510 128248 : local->port = ntohs(local_addr->sin_port);
511 :
512 128248 : return local;
513 : }
514 632065 : static int ip_get_fd(struct socket_context *sock)
515 : {
516 632065 : return sock->fd;
517 : }
518 :
519 90055 : static NTSTATUS ip_pending(struct socket_context *sock, size_t *npending)
520 : {
521 90055 : int value = 0;
522 90055 : if (ioctl(sock->fd, FIONREAD, &value) == 0) {
523 90055 : *npending = value;
524 90055 : return NT_STATUS_OK;
525 : }
526 0 : return map_nt_error_from_unix_common(errno);
527 : }
528 :
529 : static const struct socket_ops ipv4_ops = {
530 : .name = "ipv4",
531 : .fn_init = ipv4_init,
532 : .fn_connect = ipv4_connect,
533 : .fn_connect_complete = ip_connect_complete,
534 : .fn_listen = ipv4_listen,
535 : .fn_accept = ipv4_accept,
536 : .fn_recv = ip_recv,
537 : .fn_recvfrom = ipv4_recvfrom,
538 : .fn_send = ip_send,
539 : .fn_sendto = ipv4_sendto,
540 : .fn_pending = ip_pending,
541 : .fn_close = ip_close,
542 :
543 : .fn_set_option = ipv4_set_option,
544 :
545 : .fn_get_peer_name = ipv4_get_peer_name,
546 : .fn_get_peer_addr = ipv4_get_peer_addr,
547 : .fn_get_my_addr = ipv4_get_my_addr,
548 :
549 : .fn_get_fd = ip_get_fd
550 : };
551 :
552 126887 : _PUBLIC_ const struct socket_ops *socket_ipv4_ops(enum socket_type type)
553 : {
554 126887 : return &ipv4_ops;
555 : }
556 :
557 : #ifdef HAVE_IPV6
558 :
559 838 : static struct in6_addr interpret_addr6(const char *name)
560 : {
561 : char addr[INET6_ADDRSTRLEN];
562 : struct in6_addr dest6;
563 838 : const char *sp = name;
564 : char *p;
565 : int ret;
566 :
567 838 : if (sp == NULL) return in6addr_any;
568 :
569 838 : p = strchr_m(sp, '%');
570 :
571 838 : if (strcasecmp(sp, "localhost") == 0) {
572 0 : sp = "::1";
573 : }
574 :
575 : /*
576 : * Cope with link-local.
577 : * This is IP:v6:addr%ifname.
578 : */
579 :
580 838 : if (p && (p > sp) && (if_nametoindex(p+1) != 0)) {
581 0 : strlcpy(addr, sp,
582 0 : MIN(PTR_DIFF(p,sp)+1,
583 : sizeof(addr)));
584 0 : sp = addr;
585 : }
586 :
587 838 : ret = inet_pton(AF_INET6, sp, &dest6);
588 838 : if (ret > 0) {
589 838 : return dest6;
590 : }
591 :
592 0 : return in6addr_any;
593 : }
594 :
595 838 : static NTSTATUS ipv6_init(struct socket_context *sock)
596 : {
597 : int type;
598 :
599 838 : switch (sock->type) {
600 818 : case SOCKET_TYPE_STREAM:
601 818 : type = SOCK_STREAM;
602 818 : break;
603 0 : case SOCKET_TYPE_DGRAM:
604 0 : type = SOCK_DGRAM;
605 0 : break;
606 0 : default:
607 0 : return NT_STATUS_INVALID_PARAMETER;
608 : }
609 :
610 838 : sock->fd = socket(PF_INET6, type, 0);
611 838 : if (sock->fd == -1) {
612 0 : return map_nt_error_from_unix_common(errno);
613 : }
614 :
615 838 : smb_set_close_on_exec(sock->fd);
616 :
617 838 : sock->backend_name = "ipv6";
618 838 : sock->family = AF_INET6;
619 :
620 838 : return NT_STATUS_OK;
621 : }
622 :
623 227 : static NTSTATUS ipv6_tcp_connect(struct socket_context *sock,
624 : const struct socket_address *my_address,
625 : const struct socket_address *srv_address,
626 : uint32_t flags)
627 : {
628 : int ret;
629 :
630 227 : if (my_address && my_address->sockaddr) {
631 0 : ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
632 0 : if (ret == -1) {
633 0 : return map_nt_error_from_unix_common(errno);
634 : }
635 227 : } else if (my_address) {
636 : struct in6_addr my_ip;
637 0 : my_ip = interpret_addr6(my_address->addr);
638 :
639 0 : if (memcmp(&my_ip, &in6addr_any, sizeof(my_ip)) || my_address->port != 0) {
640 : struct sockaddr_in6 my_addr;
641 0 : ZERO_STRUCT(my_addr);
642 0 : my_addr.sin6_addr = my_ip;
643 0 : my_addr.sin6_port = htons(my_address->port);
644 0 : my_addr.sin6_family = PF_INET6;
645 :
646 0 : ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
647 0 : if (ret == -1) {
648 0 : return map_nt_error_from_unix_common(errno);
649 : }
650 : }
651 : }
652 :
653 227 : if (srv_address->sockaddr) {
654 0 : ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
655 : } else {
656 : struct in6_addr srv_ip;
657 : struct sockaddr_in6 srv_addr;
658 227 : srv_ip = interpret_addr6(srv_address->addr);
659 227 : if (memcmp(&srv_ip, &in6addr_any, sizeof(srv_ip)) == 0) {
660 0 : return NT_STATUS_BAD_NETWORK_NAME;
661 : }
662 :
663 227 : ZERO_STRUCT(srv_addr);
664 227 : srv_addr.sin6_addr = srv_ip;
665 227 : srv_addr.sin6_port = htons(srv_address->port);
666 227 : srv_addr.sin6_family = PF_INET6;
667 :
668 227 : ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
669 : }
670 227 : if (ret == -1) {
671 43 : return map_nt_error_from_unix_common(errno);
672 : }
673 :
674 184 : return ip_connect_complete(sock, flags);
675 : }
676 :
677 : /*
678 : fix the sin6_scope_id based on the address interface
679 : */
680 611 : static void fix_scope_id(struct sockaddr_in6 *in6,
681 : const char *address)
682 : {
683 611 : const char *p = strchr(address, '%');
684 611 : if (p != NULL) {
685 0 : in6->sin6_scope_id = if_nametoindex(p+1);
686 : }
687 611 : }
688 :
689 :
690 611 : static NTSTATUS ipv6_listen(struct socket_context *sock,
691 : const struct socket_address *my_address,
692 : int queue_size, uint32_t flags)
693 : {
694 : struct sockaddr_in6 my_addr;
695 : struct in6_addr ip_addr;
696 : int ret;
697 :
698 611 : socket_set_option(sock, "SO_REUSEADDR=1", NULL);
699 :
700 611 : if (my_address->sockaddr) {
701 0 : ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
702 : } else {
703 611 : int one = 1;
704 611 : ip_addr = interpret_addr6(my_address->addr);
705 :
706 611 : ZERO_STRUCT(my_addr);
707 611 : my_addr.sin6_addr = ip_addr;
708 611 : my_addr.sin6_port = htons(my_address->port);
709 611 : my_addr.sin6_family = PF_INET6;
710 611 : fix_scope_id(&my_addr, my_address->addr);
711 :
712 : /* when binding on ipv6 we always want to only bind on v6 */
713 611 : ret = setsockopt(sock->fd, IPPROTO_IPV6, IPV6_V6ONLY,
714 : (const void *)&one, sizeof(one));
715 611 : if (ret != -1) {
716 611 : ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
717 : }
718 : }
719 :
720 611 : if (ret == -1) {
721 0 : return map_nt_error_from_unix_common(errno);
722 : }
723 :
724 611 : if (sock->type == SOCKET_TYPE_STREAM) {
725 611 : ret = listen(sock->fd, queue_size);
726 611 : if (ret == -1) {
727 0 : return map_nt_error_from_unix_common(errno);
728 : }
729 : }
730 :
731 611 : ret = set_blocking(sock->fd, false);
732 611 : if (ret == -1) {
733 0 : return map_nt_error_from_unix_common(errno);
734 : }
735 :
736 611 : sock->state= SOCKET_STATE_SERVER_LISTEN;
737 :
738 611 : return NT_STATUS_OK;
739 : }
740 :
741 1959 : static NTSTATUS ipv6_tcp_accept(struct socket_context *sock, struct socket_context **new_sock)
742 : {
743 : struct sockaddr_in6 cli_addr;
744 1959 : socklen_t cli_addr_len = sizeof(cli_addr);
745 : int new_fd, ret;
746 :
747 1959 : if (sock->type != SOCKET_TYPE_STREAM) {
748 0 : return NT_STATUS_INVALID_PARAMETER;
749 : }
750 :
751 1959 : new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
752 1959 : if (new_fd == -1) {
753 7 : return map_nt_error_from_unix_common(errno);
754 : }
755 :
756 1952 : ret = set_blocking(new_fd, false);
757 1952 : if (ret == -1) {
758 0 : close(new_fd);
759 0 : return map_nt_error_from_unix_common(errno);
760 : }
761 1952 : smb_set_close_on_exec(new_fd);
762 :
763 : /* TODO: we could add a 'accept_check' hook here
764 : * which get the black/white lists via socket_set_accept_filter()
765 : * or something like that
766 : * --metze
767 : */
768 :
769 1952 : (*new_sock) = talloc(NULL, struct socket_context);
770 1952 : if (!(*new_sock)) {
771 0 : close(new_fd);
772 0 : return NT_STATUS_NO_MEMORY;
773 : }
774 :
775 : /* copy the socket_context */
776 1952 : (*new_sock)->type = sock->type;
777 1952 : (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
778 1952 : (*new_sock)->flags = sock->flags;
779 :
780 1952 : (*new_sock)->fd = new_fd;
781 :
782 1952 : (*new_sock)->private_data = NULL;
783 1952 : (*new_sock)->ops = sock->ops;
784 1952 : (*new_sock)->backend_name = sock->backend_name;
785 :
786 1952 : return NT_STATUS_OK;
787 : }
788 :
789 0 : static NTSTATUS ipv6_recvfrom(struct socket_context *sock, void *buf,
790 : size_t wantlen, size_t *nread,
791 : TALLOC_CTX *addr_ctx, struct socket_address **_src)
792 : {
793 : ssize_t gotlen;
794 : struct sockaddr_in6 *from_addr;
795 0 : socklen_t from_len = sizeof(*from_addr);
796 : struct socket_address *src;
797 : char addrstring[INET6_ADDRSTRLEN];
798 :
799 0 : src = talloc(addr_ctx, struct socket_address);
800 0 : if (!src) {
801 0 : return NT_STATUS_NO_MEMORY;
802 : }
803 :
804 0 : src->family = sock->backend_name;
805 :
806 0 : from_addr = talloc(src, struct sockaddr_in6);
807 0 : if (!from_addr) {
808 0 : talloc_free(src);
809 0 : return NT_STATUS_NO_MEMORY;
810 : }
811 :
812 0 : src->sockaddr = (struct sockaddr *)from_addr;
813 :
814 0 : *nread = 0;
815 :
816 0 : gotlen = recvfrom(sock->fd, buf, wantlen, 0,
817 0 : src->sockaddr, &from_len);
818 0 : if (gotlen == 0) {
819 0 : talloc_free(src);
820 0 : return NT_STATUS_END_OF_FILE;
821 0 : } else if (gotlen == -1) {
822 0 : talloc_free(src);
823 0 : return map_nt_error_from_unix_common(errno);
824 : }
825 :
826 0 : src->sockaddrlen = from_len;
827 :
828 0 : if (inet_ntop(AF_INET6, &from_addr->sin6_addr, addrstring, sizeof(addrstring)) == NULL) {
829 0 : DEBUG(0, ("Unable to convert address to string: %s\n", strerror(errno)));
830 0 : talloc_free(src);
831 0 : return NT_STATUS_INTERNAL_ERROR;
832 : }
833 :
834 0 : src->addr = talloc_strdup(src, addrstring);
835 0 : if (src->addr == NULL) {
836 0 : talloc_free(src);
837 0 : return NT_STATUS_NO_MEMORY;
838 : }
839 0 : src->port = ntohs(from_addr->sin6_port);
840 :
841 0 : *nread = gotlen;
842 0 : *_src = src;
843 0 : return NT_STATUS_OK;
844 : }
845 :
846 0 : static NTSTATUS ipv6_sendto(struct socket_context *sock,
847 : const DATA_BLOB *blob, size_t *sendlen,
848 : const struct socket_address *dest_addr)
849 : {
850 : ssize_t len;
851 :
852 0 : if (dest_addr->sockaddr) {
853 0 : len = sendto(sock->fd, blob->data, blob->length, 0,
854 0 : dest_addr->sockaddr, dest_addr->sockaddrlen);
855 : } else {
856 : struct sockaddr_in6 srv_addr;
857 : struct in6_addr addr;
858 :
859 0 : ZERO_STRUCT(srv_addr);
860 0 : addr = interpret_addr6(dest_addr->addr);
861 0 : if (memcmp(&addr.s6_addr, &in6addr_any,
862 : sizeof(addr.s6_addr)) == 0) {
863 0 : return NT_STATUS_HOST_UNREACHABLE;
864 : }
865 0 : srv_addr.sin6_addr = addr;
866 0 : srv_addr.sin6_port = htons(dest_addr->port);
867 0 : srv_addr.sin6_family = PF_INET6;
868 :
869 0 : *sendlen = 0;
870 :
871 0 : len = sendto(sock->fd, blob->data, blob->length, 0,
872 : (struct sockaddr *)&srv_addr, sizeof(srv_addr));
873 : }
874 0 : if (len == -1) {
875 0 : return map_nt_error_from_unix_common(errno);
876 : }
877 :
878 0 : *sendlen = len;
879 :
880 0 : return NT_STATUS_OK;
881 : }
882 :
883 1877 : static NTSTATUS ipv6_set_option(struct socket_context *sock, const char *option, const char *val)
884 : {
885 1877 : set_socket_options(sock->fd, option);
886 1877 : return NT_STATUS_OK;
887 : }
888 :
889 0 : static char *ipv6_tcp_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
890 : {
891 : struct sockaddr_in6 peer_addr;
892 0 : socklen_t len = sizeof(peer_addr);
893 : struct hostent *he;
894 : int ret;
895 :
896 0 : ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
897 0 : if (ret == -1) {
898 0 : return NULL;
899 : }
900 :
901 0 : he = gethostbyaddr((char *)&peer_addr.sin6_addr, sizeof(peer_addr.sin6_addr), AF_INET6);
902 0 : if (he == NULL) {
903 0 : return NULL;
904 : }
905 :
906 0 : return talloc_strdup(mem_ctx, he->h_name);
907 : }
908 :
909 1974 : static struct socket_address *ipv6_tcp_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
910 : {
911 : struct sockaddr_in6 *peer_addr;
912 1974 : socklen_t len = sizeof(*peer_addr);
913 : struct socket_address *peer;
914 : int ret;
915 : char addr[128];
916 : const char *addr_ret;
917 :
918 1974 : peer = talloc(mem_ctx, struct socket_address);
919 1974 : if (!peer) {
920 0 : return NULL;
921 : }
922 :
923 1974 : peer->family = sock->backend_name;
924 1974 : peer_addr = talloc(peer, struct sockaddr_in6);
925 1974 : if (!peer_addr) {
926 0 : talloc_free(peer);
927 0 : return NULL;
928 : }
929 :
930 1974 : peer->sockaddr = (struct sockaddr *)peer_addr;
931 :
932 1974 : ret = getpeername(sock->fd, peer->sockaddr, &len);
933 1974 : if (ret == -1) {
934 0 : talloc_free(peer);
935 0 : return NULL;
936 : }
937 :
938 1974 : peer->sockaddrlen = len;
939 :
940 1974 : addr_ret = inet_ntop(AF_INET6, &peer_addr->sin6_addr, addr, sizeof(addr));
941 1974 : if (addr_ret == NULL) {
942 0 : talloc_free(peer);
943 0 : return NULL;
944 : }
945 :
946 1974 : peer->addr = talloc_strdup(peer, addr_ret);
947 1974 : if (peer->addr == NULL) {
948 0 : talloc_free(peer);
949 0 : return NULL;
950 : }
951 :
952 1974 : peer->port = ntohs(peer_addr->sin6_port);
953 :
954 1974 : return peer;
955 : }
956 :
957 2046 : static struct socket_address *ipv6_tcp_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
958 : {
959 : struct sockaddr_in6 *local_addr;
960 2046 : socklen_t len = sizeof(*local_addr);
961 : struct socket_address *local;
962 : int ret;
963 : char addrstring[INET6_ADDRSTRLEN];
964 :
965 2046 : local = talloc(mem_ctx, struct socket_address);
966 2046 : if (!local) {
967 0 : return NULL;
968 : }
969 :
970 2046 : local->family = sock->backend_name;
971 2046 : local_addr = talloc(local, struct sockaddr_in6);
972 2046 : if (!local_addr) {
973 0 : talloc_free(local);
974 0 : return NULL;
975 : }
976 :
977 2046 : local->sockaddr = (struct sockaddr *)local_addr;
978 :
979 2046 : ret = getsockname(sock->fd, local->sockaddr, &len);
980 2046 : if (ret == -1) {
981 0 : talloc_free(local);
982 0 : return NULL;
983 : }
984 :
985 2046 : local->sockaddrlen = len;
986 :
987 2046 : if (inet_ntop(AF_INET6, &local_addr->sin6_addr, addrstring,
988 : sizeof(addrstring)) == NULL) {
989 0 : DEBUG(0, ("Unable to convert address to string: %s\n",
990 : strerror(errno)));
991 0 : talloc_free(local);
992 0 : return NULL;
993 : }
994 :
995 2046 : local->addr = talloc_strdup(local, addrstring);
996 2046 : if (!local->addr) {
997 0 : talloc_free(local);
998 0 : return NULL;
999 : }
1000 2046 : local->port = ntohs(local_addr->sin6_port);
1001 :
1002 2046 : return local;
1003 : }
1004 :
1005 : static const struct socket_ops ipv6_tcp_ops = {
1006 : .name = "ipv6",
1007 : .fn_init = ipv6_init,
1008 : .fn_connect = ipv6_tcp_connect,
1009 : .fn_connect_complete = ip_connect_complete,
1010 : .fn_listen = ipv6_listen,
1011 : .fn_accept = ipv6_tcp_accept,
1012 : .fn_recv = ip_recv,
1013 : .fn_recvfrom = ipv6_recvfrom,
1014 : .fn_send = ip_send,
1015 : .fn_sendto = ipv6_sendto,
1016 : .fn_pending = ip_pending,
1017 : .fn_close = ip_close,
1018 :
1019 : .fn_set_option = ipv6_set_option,
1020 :
1021 : .fn_get_peer_name = ipv6_tcp_get_peer_name,
1022 : .fn_get_peer_addr = ipv6_tcp_get_peer_addr,
1023 : .fn_get_my_addr = ipv6_tcp_get_my_addr,
1024 :
1025 : .fn_get_fd = ip_get_fd
1026 : };
1027 :
1028 838 : _PUBLIC_ const struct socket_ops *socket_ipv6_ops(enum socket_type type)
1029 : {
1030 838 : return &ipv6_tcp_ops;
1031 : }
1032 :
1033 : #endif
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