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 char *my_address, int my_port,
89 const char *srv_address, int srv_port,
92 struct sockaddr_in srv_addr;
93 struct ipv4_addr my_ip;
94 struct ipv4_addr srv_ip;
97 my_ip = interpret_addr2(my_address);
99 if (my_ip.addr != 0 || my_port != 0) {
100 struct sockaddr_in my_addr;
101 ZERO_STRUCT(my_addr);
102 #ifdef HAVE_SOCK_SIN_LEN
103 my_addr.sin_len = sizeof(my_addr);
105 my_addr.sin_addr.s_addr = my_ip.addr;
106 my_addr.sin_port = htons(my_port);
107 my_addr.sin_family = PF_INET;
109 ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
111 return map_nt_error_from_unix(errno);
115 srv_ip = interpret_addr2(srv_address);
117 return NT_STATUS_BAD_NETWORK_NAME;
120 ZERO_STRUCT(srv_addr);
121 #ifdef HAVE_SOCK_SIN_LEN
122 srv_addr.sin_len = sizeof(srv_addr);
124 srv_addr.sin_addr.s_addr= srv_ip.addr;
125 srv_addr.sin_port = htons(srv_port);
126 srv_addr.sin_family = PF_INET;
128 ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
130 return map_nt_error_from_unix(errno);
133 return ipv4_connect_complete(sock, flags);
138 note that for simplicity of the API, socket_listen() is also
139 use for DGRAM sockets, but in reality only a bind() is done
141 static NTSTATUS ipv4_listen(struct socket_context *sock,
142 const char *my_address, int port,
143 int queue_size, uint32_t flags)
145 struct sockaddr_in my_addr;
146 struct ipv4_addr ip_addr;
149 socket_set_option(sock, "SO_REUSEADDR=1", NULL);
151 ip_addr = interpret_addr2(my_address);
153 ZERO_STRUCT(my_addr);
154 #ifdef HAVE_SOCK_SIN_LEN
155 my_addr.sin_len = sizeof(my_addr);
157 my_addr.sin_addr.s_addr = ip_addr.addr;
158 my_addr.sin_port = htons(port);
159 my_addr.sin_family = PF_INET;
161 ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
163 return map_nt_error_from_unix(errno);
166 if (sock->type == SOCKET_TYPE_STREAM) {
167 ret = listen(sock->fd, queue_size);
169 return map_nt_error_from_unix(errno);
173 if (!(flags & SOCKET_FLAG_BLOCK)) {
174 ret = set_blocking(sock->fd, False);
176 return map_nt_error_from_unix(errno);
180 sock->state= SOCKET_STATE_SERVER_LISTEN;
185 static NTSTATUS ipv4_accept(struct socket_context *sock, struct socket_context **new_sock)
187 struct sockaddr_in cli_addr;
188 socklen_t cli_addr_len = sizeof(cli_addr);
191 if (sock->type != SOCKET_TYPE_STREAM) {
192 return NT_STATUS_INVALID_PARAMETER;
195 new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
197 return map_nt_error_from_unix(errno);
200 if (!(sock->flags & SOCKET_FLAG_BLOCK)) {
201 int ret = set_blocking(new_fd, False);
204 return map_nt_error_from_unix(errno);
208 /* TODO: we could add a 'accept_check' hook here
209 * which get the black/white lists via socket_set_accept_filter()
210 * or something like that
214 (*new_sock) = talloc(NULL, struct socket_context);
217 return NT_STATUS_NO_MEMORY;
220 /* copy the socket_context */
221 (*new_sock)->type = sock->type;
222 (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
223 (*new_sock)->flags = sock->flags;
225 (*new_sock)->fd = new_fd;
227 (*new_sock)->private_data = NULL;
228 (*new_sock)->ops = sock->ops;
229 (*new_sock)->backend_name = sock->backend_name;
234 static NTSTATUS ipv4_recv(struct socket_context *sock, void *buf,
235 size_t wantlen, size_t *nread, uint32_t flags)
240 /* TODO: we need to map all flags here */
241 if (flags & SOCKET_FLAG_PEEK) {
245 if (flags & SOCKET_FLAG_BLOCK) {
251 gotlen = recv(sock->fd, buf, wantlen, flgs);
253 return NT_STATUS_END_OF_FILE;
254 } else if (gotlen == -1) {
255 return map_nt_error_from_unix(errno);
264 static NTSTATUS ipv4_recvfrom(struct socket_context *sock, void *buf,
265 size_t wantlen, size_t *nread, uint32_t flags,
266 const char **src_addr, int *src_port)
270 struct sockaddr_in from_addr;
271 socklen_t from_len = sizeof(from_addr);
274 if (flags & SOCKET_FLAG_PEEK) {
278 if (flags & SOCKET_FLAG_BLOCK) {
284 gotlen = recvfrom(sock->fd, buf, wantlen, flgs,
285 (struct sockaddr *)&from_addr, &from_len);
287 return NT_STATUS_END_OF_FILE;
288 } else if (gotlen == -1) {
289 return map_nt_error_from_unix(errno);
292 addr = inet_ntoa(from_addr.sin_addr);
294 return NT_STATUS_INTERNAL_ERROR;
296 *src_addr = talloc_strdup(sock, addr);
297 NT_STATUS_HAVE_NO_MEMORY(*src_addr);
298 *src_port = ntohs(from_addr.sin_port);
305 static NTSTATUS ipv4_send(struct socket_context *sock,
306 const DATA_BLOB *blob, size_t *sendlen, uint32_t flags)
313 len = send(sock->fd, blob->data, blob->length, flgs);
315 return map_nt_error_from_unix(errno);
323 static NTSTATUS ipv4_sendto(struct socket_context *sock,
324 const DATA_BLOB *blob, size_t *sendlen, uint32_t flags,
325 const char *dest_addr, int dest_port)
329 struct sockaddr_in srv_addr;
330 struct ipv4_addr addr;
332 ZERO_STRUCT(srv_addr);
333 #ifdef HAVE_SOCK_SIN_LEN
334 srv_addr.sin_len = sizeof(srv_addr);
336 addr = interpret_addr2(dest_addr);
337 srv_addr.sin_addr.s_addr = addr.addr;
338 srv_addr.sin_port = htons(dest_port);
339 srv_addr.sin_family = PF_INET;
343 len = sendto(sock->fd, blob->data, blob->length, flgs,
344 (struct sockaddr *)&srv_addr, sizeof(srv_addr));
346 return map_nt_error_from_unix(errno);
354 static NTSTATUS ipv4_set_option(struct socket_context *sock, const char *option, const char *val)
356 set_socket_options(sock->fd, option);
360 static char *ipv4_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
362 struct sockaddr_in peer_addr;
363 socklen_t len = sizeof(peer_addr);
367 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
372 he = gethostbyaddr((char *)&peer_addr.sin_addr, sizeof(peer_addr.sin_addr), AF_INET);
377 return talloc_strdup(mem_ctx, he->h_name);
380 static char *ipv4_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
382 struct sockaddr_in peer_addr;
383 socklen_t len = sizeof(peer_addr);
386 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
391 return talloc_strdup(mem_ctx, inet_ntoa(peer_addr.sin_addr));
394 static int ipv4_get_peer_port(struct socket_context *sock)
396 struct sockaddr_in peer_addr;
397 socklen_t len = sizeof(peer_addr);
400 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
405 return ntohs(peer_addr.sin_port);
408 static char *ipv4_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
410 struct sockaddr_in my_addr;
411 socklen_t len = sizeof(my_addr);
414 ret = getsockname(sock->fd, (struct sockaddr *)&my_addr, &len);
419 return talloc_strdup(mem_ctx, inet_ntoa(my_addr.sin_addr));
422 static int ipv4_get_my_port(struct socket_context *sock)
424 struct sockaddr_in my_addr;
425 socklen_t len = sizeof(my_addr);
428 ret = getsockname(sock->fd, (struct sockaddr *)&my_addr, &len);
433 return ntohs(my_addr.sin_port);
436 static int ipv4_get_fd(struct socket_context *sock)
441 static NTSTATUS ipv4_pending(struct socket_context *sock, size_t *npending)
444 if (ioctl(sock->fd, FIONREAD, &value) == 0) {
448 return map_nt_error_from_unix(errno);
451 static const struct socket_ops ipv4_ops = {
453 .fn_init = ipv4_init,
454 .fn_connect = ipv4_connect,
455 .fn_connect_complete = ipv4_connect_complete,
456 .fn_listen = ipv4_listen,
457 .fn_accept = ipv4_accept,
458 .fn_recv = ipv4_recv,
459 .fn_recvfrom = ipv4_recvfrom,
460 .fn_send = ipv4_send,
461 .fn_sendto = ipv4_sendto,
462 .fn_pending = ipv4_pending,
463 .fn_close = ipv4_close,
465 .fn_set_option = ipv4_set_option,
467 .fn_get_peer_name = ipv4_get_peer_name,
468 .fn_get_peer_addr = ipv4_get_peer_addr,
469 .fn_get_peer_port = ipv4_get_peer_port,
470 .fn_get_my_addr = ipv4_get_my_addr,
471 .fn_get_my_port = ipv4_get_my_port,
473 .fn_get_fd = ipv4_get_fd
476 const struct socket_ops *socket_ipv4_ops(enum socket_type type)