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"
27 static NTSTATUS ipv4_init(struct socket_context *sock)
32 case SOCKET_TYPE_STREAM:
35 case SOCKET_TYPE_DGRAM:
39 return NT_STATUS_INVALID_PARAMETER;
42 sock->fd = socket(PF_INET, type, 0);
44 return map_nt_error_from_unix(errno);
50 static void ipv4_close(struct socket_context *sock)
55 static NTSTATUS ipv4_connect_complete(struct socket_context *sock, uint32_t flags)
58 socklen_t len = sizeof(error);
60 /* check for any errors that may have occurred - this is needed
61 for non-blocking connect */
62 ret = getsockopt(sock->fd, SOL_SOCKET, SO_ERROR, &error, &len);
64 return map_nt_error_from_unix(errno);
67 return map_nt_error_from_unix(error);
70 if (!(flags & SOCKET_FLAG_BLOCK)) {
71 ret = set_blocking(sock->fd, False);
73 return map_nt_error_from_unix(errno);
77 sock->state = SOCKET_STATE_CLIENT_CONNECTED;
83 static NTSTATUS ipv4_connect(struct socket_context *sock,
84 const char *my_address, int my_port,
85 const char *srv_address, int srv_port,
88 struct sockaddr_in srv_addr;
89 struct ipv4_addr my_ip;
90 struct ipv4_addr srv_ip;
93 my_ip = interpret_addr2(my_address);
95 if (my_ip.addr != 0 || my_port != 0) {
96 struct sockaddr_in my_addr;
98 #ifdef HAVE_SOCK_SIN_LEN
99 my_addr.sin_len = sizeof(my_addr);
101 my_addr.sin_addr.s_addr = my_ip.addr;
102 my_addr.sin_port = htons(my_port);
103 my_addr.sin_family = PF_INET;
105 ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
107 return map_nt_error_from_unix(errno);
111 srv_ip = interpret_addr2(srv_address);
113 ZERO_STRUCT(srv_addr);
114 #ifdef HAVE_SOCK_SIN_LEN
115 srv_addr.sin_len = sizeof(srv_addr);
117 srv_addr.sin_addr.s_addr= srv_ip.addr;
118 srv_addr.sin_port = htons(srv_port);
119 srv_addr.sin_family = PF_INET;
121 ret = connect(sock->fd, (const struct sockaddr *)&srv_addr, sizeof(srv_addr));
123 return map_nt_error_from_unix(errno);
126 return ipv4_connect_complete(sock, flags);
131 note that for simplicity of the API, socket_listen() is also
132 use for DGRAM sockets, but in reality only a bind() is done
134 static NTSTATUS ipv4_listen(struct socket_context *sock,
135 const char *my_address, int port,
136 int queue_size, uint32_t flags)
138 struct sockaddr_in my_addr;
139 struct ipv4_addr ip_addr;
142 socket_set_option(sock, "SO_REUSEADDR=1", NULL);
144 ip_addr = interpret_addr2(my_address);
146 ZERO_STRUCT(my_addr);
147 #ifdef HAVE_SOCK_SIN_LEN
148 my_addr.sin_len = sizeof(my_addr);
150 my_addr.sin_addr.s_addr = ip_addr.addr;
151 my_addr.sin_port = htons(port);
152 my_addr.sin_family = PF_INET;
154 ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
156 return map_nt_error_from_unix(errno);
159 if (sock->type == SOCKET_TYPE_STREAM) {
160 ret = listen(sock->fd, queue_size);
162 return map_nt_error_from_unix(errno);
166 if (!(flags & SOCKET_FLAG_BLOCK)) {
167 ret = set_blocking(sock->fd, False);
169 return map_nt_error_from_unix(errno);
173 sock->state= SOCKET_STATE_SERVER_LISTEN;
178 static NTSTATUS ipv4_accept(struct socket_context *sock, struct socket_context **new_sock)
180 struct sockaddr_in cli_addr;
181 socklen_t cli_addr_len = sizeof(cli_addr);
184 if (sock->type != SOCKET_TYPE_STREAM) {
185 return NT_STATUS_INVALID_PARAMETER;
188 new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
190 return map_nt_error_from_unix(errno);
193 if (!(sock->flags & SOCKET_FLAG_BLOCK)) {
194 int ret = set_blocking(new_fd, False);
197 return map_nt_error_from_unix(errno);
201 /* TODO: we could add a 'accept_check' hook here
202 * which get the black/white lists via socket_set_accept_filter()
203 * or something like that
207 (*new_sock) = talloc(NULL, struct socket_context);
210 return NT_STATUS_NO_MEMORY;
213 /* copy the socket_context */
214 (*new_sock)->type = sock->type;
215 (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
216 (*new_sock)->flags = sock->flags;
218 (*new_sock)->fd = new_fd;
220 (*new_sock)->private_data = NULL;
221 (*new_sock)->ops = sock->ops;
226 static NTSTATUS ipv4_recv(struct socket_context *sock, void *buf,
227 size_t wantlen, size_t *nread, uint32_t flags)
232 /* TODO: we need to map all flags here */
233 if (flags & SOCKET_FLAG_PEEK) {
237 if (flags & SOCKET_FLAG_BLOCK) {
243 gotlen = recv(sock->fd, buf, wantlen, flgs);
245 return NT_STATUS_END_OF_FILE;
246 } else if (gotlen == -1) {
247 return map_nt_error_from_unix(errno);
256 static NTSTATUS ipv4_recvfrom(struct socket_context *sock, void *buf,
257 size_t wantlen, size_t *nread, uint32_t flags,
258 const char **src_addr, int *src_port)
262 struct sockaddr_in from_addr;
263 socklen_t from_len = sizeof(from_addr);
266 if (flags & SOCKET_FLAG_PEEK) {
270 if (flags & SOCKET_FLAG_BLOCK) {
276 gotlen = recvfrom(sock->fd, buf, wantlen, flgs,
277 (struct sockaddr *)&from_addr, &from_len);
279 return NT_STATUS_END_OF_FILE;
280 } else if (gotlen == -1) {
281 return map_nt_error_from_unix(errno);
284 addr = inet_ntoa(from_addr.sin_addr);
286 return NT_STATUS_INTERNAL_ERROR;
288 *src_addr = talloc_strdup(sock, addr);
289 NT_STATUS_HAVE_NO_MEMORY(*src_addr);
290 *src_port = ntohs(from_addr.sin_port);
297 static NTSTATUS ipv4_send(struct socket_context *sock,
298 const DATA_BLOB *blob, size_t *sendlen, uint32_t flags)
305 len = send(sock->fd, blob->data, blob->length, flgs);
307 return map_nt_error_from_unix(errno);
315 static NTSTATUS ipv4_sendto(struct socket_context *sock,
316 const DATA_BLOB *blob, size_t *sendlen, uint32_t flags,
317 const char *dest_addr, int dest_port)
321 struct sockaddr_in srv_addr;
322 struct ipv4_addr addr;
324 ZERO_STRUCT(srv_addr);
325 #ifdef HAVE_SOCK_SIN_LEN
326 srv_addr.sin_len = sizeof(srv_addr);
328 addr = interpret_addr2(dest_addr);
329 srv_addr.sin_addr.s_addr = addr.addr;
330 srv_addr.sin_port = htons(dest_port);
331 srv_addr.sin_family = PF_INET;
335 len = sendto(sock->fd, blob->data, blob->length, flgs,
336 (struct sockaddr *)&srv_addr, sizeof(srv_addr));
338 return map_nt_error_from_unix(errno);
346 static NTSTATUS ipv4_set_option(struct socket_context *sock, const char *option, const char *val)
348 set_socket_options(sock->fd, option);
352 static char *ipv4_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
354 struct sockaddr_in peer_addr;
355 socklen_t len = sizeof(peer_addr);
359 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
364 he = gethostbyaddr((char *)&peer_addr.sin_addr, sizeof(peer_addr.sin_addr), AF_INET);
369 return talloc_strdup(mem_ctx, he->h_name);
372 static char *ipv4_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
374 struct sockaddr_in peer_addr;
375 socklen_t len = sizeof(peer_addr);
378 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
383 return talloc_strdup(mem_ctx, inet_ntoa(peer_addr.sin_addr));
386 static int ipv4_get_peer_port(struct socket_context *sock)
388 struct sockaddr_in peer_addr;
389 socklen_t len = sizeof(peer_addr);
392 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
397 return ntohs(peer_addr.sin_port);
400 static char *ipv4_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
402 struct sockaddr_in my_addr;
403 socklen_t len = sizeof(my_addr);
406 ret = getsockname(sock->fd, (struct sockaddr *)&my_addr, &len);
411 return talloc_strdup(mem_ctx, inet_ntoa(my_addr.sin_addr));
414 static int ipv4_get_my_port(struct socket_context *sock)
416 struct sockaddr_in my_addr;
417 socklen_t len = sizeof(my_addr);
420 ret = getsockname(sock->fd, (struct sockaddr *)&my_addr, &len);
425 return ntohs(my_addr.sin_port);
428 static int ipv4_get_fd(struct socket_context *sock)
433 static const struct socket_ops ipv4_ops = {
435 .fn_init = ipv4_init,
436 .fn_connect = ipv4_connect,
437 .fn_connect_complete = ipv4_connect_complete,
438 .fn_listen = ipv4_listen,
439 .fn_accept = ipv4_accept,
440 .fn_recv = ipv4_recv,
441 .fn_recvfrom = ipv4_recvfrom,
442 .fn_send = ipv4_send,
443 .fn_sendto = ipv4_sendto,
444 .fn_close = ipv4_close,
446 .fn_set_option = ipv4_set_option,
448 .fn_get_peer_name = ipv4_get_peer_name,
449 .fn_get_peer_addr = ipv4_get_peer_addr,
450 .fn_get_peer_port = ipv4_get_peer_port,
451 .fn_get_my_addr = ipv4_get_my_addr,
452 .fn_get_my_port = ipv4_get_my_port,
454 .fn_get_fd = ipv4_get_fd
457 const struct socket_ops *socket_ipv4_ops(enum socket_type type)