2 Unix SMB/CIFS implementation.
6 Copyright (C) Stefan Metzmacher 2004
7 Copyright (C) Andrew Tridgell 2004-2005
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.
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.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
25 #include "system/network.h"
26 #include "system/filesys.h"
27 #include "lib/socket/socket.h"
29 static NTSTATUS ipv4_init(struct socket_context *sock)
34 case SOCKET_TYPE_STREAM:
37 case SOCKET_TYPE_DGRAM:
41 return NT_STATUS_INVALID_PARAMETER;
44 sock->fd = socket(PF_INET, type, 0);
46 return map_nt_error_from_unix(errno);
49 sock->backend_name = "ipv4";
54 static void ipv4_close(struct socket_context *sock)
59 static NTSTATUS ipv4_connect_complete(struct socket_context *sock, uint32_t flags)
62 socklen_t len = sizeof(error);
64 /* check for any errors that may have occurred - this is needed
65 for non-blocking connect */
66 ret = getsockopt(sock->fd, SOL_SOCKET, SO_ERROR, &error, &len);
68 return map_nt_error_from_unix(errno);
71 return map_nt_error_from_unix(error);
74 if (!(flags & SOCKET_FLAG_BLOCK)) {
75 ret = set_blocking(sock->fd, False);
77 return map_nt_error_from_unix(errno);
81 sock->state = SOCKET_STATE_CLIENT_CONNECTED;
87 static NTSTATUS ipv4_connect(struct socket_context *sock,
88 const struct socket_address *my_address,
89 const struct socket_address *srv_address,
92 struct sockaddr_in srv_addr;
93 struct ipv4_addr my_ip;
94 struct ipv4_addr srv_ip;
97 if (my_address && my_address->sockaddr) {
98 ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
100 return map_nt_error_from_unix(errno);
102 } else if (my_address) {
103 my_ip = interpret_addr2(my_address->addr);
105 if (my_ip.addr != 0 || my_address->port != 0) {
106 struct sockaddr_in my_addr;
107 ZERO_STRUCT(my_addr);
108 #ifdef HAVE_SOCK_SIN_LEN
109 my_addr.sin_len = sizeof(my_addr);
111 my_addr.sin_addr.s_addr = my_ip.addr;
112 my_addr.sin_port = htons(my_address->port);
113 my_addr.sin_family = PF_INET;
115 ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
117 return map_nt_error_from_unix(errno);
122 if (srv_address->sockaddr) {
123 ret = connect(sock->fd, srv_address->sockaddr, srv_address->sockaddrlen);
125 return map_nt_error_from_unix(errno);
128 srv_ip = interpret_addr2(srv_address->addr);
130 return NT_STATUS_BAD_NETWORK_NAME;
133 ZERO_STRUCT(srv_addr);
134 #ifdef HAVE_SOCK_SIN_LEN
135 srv_addr.sin_len = sizeof(srv_addr);
137 srv_addr.sin_addr.s_addr= srv_ip.addr;
138 srv_addr.sin_port = htons(srv_address->port);
139 srv_addr.sin_family = PF_INET;
141 ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
143 return map_nt_error_from_unix(errno);
147 return ipv4_connect_complete(sock, flags);
152 note that for simplicity of the API, socket_listen() is also
153 use for DGRAM sockets, but in reality only a bind() is done
155 static NTSTATUS ipv4_listen(struct socket_context *sock,
156 const struct socket_address *my_address,
157 int queue_size, uint32_t flags)
159 struct sockaddr_in my_addr;
160 struct ipv4_addr ip_addr;
163 socket_set_option(sock, "SO_REUSEADDR=1", NULL);
165 if (my_address->sockaddr) {
166 ret = bind(sock->fd, my_address->sockaddr, my_address->sockaddrlen);
168 ip_addr = interpret_addr2(my_address->addr);
170 ZERO_STRUCT(my_addr);
171 #ifdef HAVE_SOCK_SIN_LEN
172 my_addr.sin_len = sizeof(my_addr);
174 my_addr.sin_addr.s_addr = ip_addr.addr;
175 my_addr.sin_port = htons(my_address->port);
176 my_addr.sin_family = PF_INET;
178 ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
182 return map_nt_error_from_unix(errno);
185 if (sock->type == SOCKET_TYPE_STREAM) {
186 ret = listen(sock->fd, queue_size);
188 return map_nt_error_from_unix(errno);
192 if (!(flags & SOCKET_FLAG_BLOCK)) {
193 ret = set_blocking(sock->fd, False);
195 return map_nt_error_from_unix(errno);
199 sock->state= SOCKET_STATE_SERVER_LISTEN;
204 static NTSTATUS ipv4_accept(struct socket_context *sock, struct socket_context **new_sock)
206 struct sockaddr_in cli_addr;
207 socklen_t cli_addr_len = sizeof(cli_addr);
210 if (sock->type != SOCKET_TYPE_STREAM) {
211 return NT_STATUS_INVALID_PARAMETER;
214 new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
216 return map_nt_error_from_unix(errno);
219 if (!(sock->flags & SOCKET_FLAG_BLOCK)) {
220 int ret = set_blocking(new_fd, False);
223 return map_nt_error_from_unix(errno);
227 /* TODO: we could add a 'accept_check' hook here
228 * which get the black/white lists via socket_set_accept_filter()
229 * or something like that
233 (*new_sock) = talloc(NULL, struct socket_context);
236 return NT_STATUS_NO_MEMORY;
239 /* copy the socket_context */
240 (*new_sock)->type = sock->type;
241 (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
242 (*new_sock)->flags = sock->flags;
244 (*new_sock)->fd = new_fd;
246 (*new_sock)->private_data = NULL;
247 (*new_sock)->ops = sock->ops;
248 (*new_sock)->backend_name = sock->backend_name;
253 static NTSTATUS ipv4_recv(struct socket_context *sock, void *buf,
254 size_t wantlen, size_t *nread)
260 gotlen = recv(sock->fd, buf, wantlen, 0);
262 return NT_STATUS_END_OF_FILE;
263 } else if (gotlen == -1) {
264 return map_nt_error_from_unix(errno);
273 static NTSTATUS ipv4_recvfrom(struct socket_context *sock, void *buf,
274 size_t wantlen, size_t *nread,
275 TALLOC_CTX *addr_ctx, struct socket_address **_src)
278 struct sockaddr_in *from_addr;
279 socklen_t from_len = sizeof(*from_addr);
280 struct socket_address *src;
283 src = talloc(addr_ctx, struct socket_address);
285 return NT_STATUS_NO_MEMORY;
288 src->family = sock->backend_name;
290 from_addr = talloc(src, struct sockaddr_in);
293 return NT_STATUS_NO_MEMORY;
296 src->sockaddr = (struct sockaddr *)from_addr;
300 gotlen = recvfrom(sock->fd, buf, wantlen, 0,
301 src->sockaddr, &from_len);
304 return NT_STATUS_END_OF_FILE;
305 } else if (gotlen == -1) {
307 return map_nt_error_from_unix(errno);
310 src->sockaddrlen = from_len;
312 addr = inet_ntoa(from_addr->sin_addr);
315 return NT_STATUS_INTERNAL_ERROR;
317 src->addr = talloc_strdup(src, addr);
318 if (src->addr == NULL) {
320 return NT_STATUS_NO_MEMORY;
322 src->port = ntohs(from_addr->sin_port);
329 static NTSTATUS ipv4_send(struct socket_context *sock,
330 const DATA_BLOB *blob, size_t *sendlen)
336 len = send(sock->fd, blob->data, blob->length, 0);
338 return map_nt_error_from_unix(errno);
346 static NTSTATUS ipv4_sendto(struct socket_context *sock,
347 const DATA_BLOB *blob, size_t *sendlen,
348 const struct socket_address *dest_addr)
352 if (dest_addr->sockaddr) {
353 len = sendto(sock->fd, blob->data, blob->length, 0,
354 dest_addr->sockaddr, dest_addr->sockaddrlen);
356 struct sockaddr_in srv_addr;
357 struct ipv4_addr addr;
359 ZERO_STRUCT(srv_addr);
360 #ifdef HAVE_SOCK_SIN_LEN
361 srv_addr.sin_len = sizeof(srv_addr);
363 addr = interpret_addr2(dest_addr->addr);
364 srv_addr.sin_addr.s_addr = addr.addr;
365 srv_addr.sin_port = htons(dest_addr->port);
366 srv_addr.sin_family = PF_INET;
370 len = sendto(sock->fd, blob->data, blob->length, 0,
371 (struct sockaddr *)&srv_addr, sizeof(srv_addr));
374 return map_nt_error_from_unix(errno);
382 static NTSTATUS ipv4_set_option(struct socket_context *sock, const char *option, const char *val)
384 set_socket_options(sock->fd, option);
388 static char *ipv4_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
390 struct sockaddr_in peer_addr;
391 socklen_t len = sizeof(peer_addr);
395 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
400 he = gethostbyaddr((char *)&peer_addr.sin_addr, sizeof(peer_addr.sin_addr), AF_INET);
405 return talloc_strdup(mem_ctx, he->h_name);
408 static struct socket_address *ipv4_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
410 struct sockaddr_in *peer_addr;
411 socklen_t len = sizeof(*peer_addr);
413 struct socket_address *peer;
416 peer = talloc(mem_ctx, struct socket_address);
421 peer->family = sock->backend_name;
422 peer_addr = talloc(peer, struct sockaddr_in);
428 peer->sockaddr = (struct sockaddr *)peer_addr;
430 ret = getpeername(sock->fd, peer->sockaddr, &len);
436 peer->sockaddrlen = len;
438 addr = inet_ntoa(peer_addr->sin_addr);
443 peer->addr = talloc_strdup(peer, addr);
448 peer->port = ntohs(peer_addr->sin_port);
453 static struct socket_address *ipv4_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
455 struct sockaddr_in *local_addr;
456 socklen_t len = sizeof(*local_addr);
458 struct socket_address *local;
461 local = talloc(mem_ctx, struct socket_address);
466 local->family = sock->backend_name;
467 local_addr = talloc(local, struct sockaddr_in);
473 local->sockaddr = (struct sockaddr *)local_addr;
475 ret = getsockname(sock->fd, local->sockaddr, &len);
481 local->sockaddrlen = len;
483 addr = inet_ntoa(local_addr->sin_addr);
488 local->addr = talloc_strdup(local, addr);
493 local->port = ntohs(local_addr->sin_port);
497 static int ipv4_get_fd(struct socket_context *sock)
502 static NTSTATUS ipv4_pending(struct socket_context *sock, size_t *npending)
505 if (ioctl(sock->fd, FIONREAD, &value) == 0) {
509 return map_nt_error_from_unix(errno);
512 static const struct socket_ops ipv4_ops = {
514 .fn_init = ipv4_init,
515 .fn_connect = ipv4_connect,
516 .fn_connect_complete = ipv4_connect_complete,
517 .fn_listen = ipv4_listen,
518 .fn_accept = ipv4_accept,
519 .fn_recv = ipv4_recv,
520 .fn_recvfrom = ipv4_recvfrom,
521 .fn_send = ipv4_send,
522 .fn_sendto = ipv4_sendto,
523 .fn_pending = ipv4_pending,
524 .fn_close = ipv4_close,
526 .fn_set_option = ipv4_set_option,
528 .fn_get_peer_name = ipv4_get_peer_name,
529 .fn_get_peer_addr = ipv4_get_peer_addr,
530 .fn_get_my_addr = ipv4_get_my_addr,
531 .fn_get_fd = ipv4_get_fd
534 const struct socket_ops *socket_ipv4_ops(enum socket_type type)