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 ip_addr = interpret_addr2(my_address);
144 ZERO_STRUCT(my_addr);
145 #ifdef HAVE_SOCK_SIN_LEN
146 my_addr.sin_len = sizeof(my_addr);
148 my_addr.sin_addr.s_addr = ip_addr.addr;
149 my_addr.sin_port = htons(port);
150 my_addr.sin_family = PF_INET;
152 ret = bind(sock->fd, (struct sockaddr *)&my_addr, sizeof(my_addr));
154 return map_nt_error_from_unix(errno);
157 if (sock->type == SOCKET_TYPE_STREAM) {
158 ret = listen(sock->fd, queue_size);
160 return map_nt_error_from_unix(errno);
164 if (!(flags & SOCKET_FLAG_BLOCK)) {
165 ret = set_blocking(sock->fd, False);
167 return map_nt_error_from_unix(errno);
171 sock->state= SOCKET_STATE_SERVER_LISTEN;
176 static NTSTATUS ipv4_accept(struct socket_context *sock, struct socket_context **new_sock)
178 struct sockaddr_in cli_addr;
179 socklen_t cli_addr_len = sizeof(cli_addr);
182 if (sock->type != SOCKET_TYPE_STREAM) {
183 return NT_STATUS_INVALID_PARAMETER;
186 new_fd = accept(sock->fd, (struct sockaddr *)&cli_addr, &cli_addr_len);
188 return map_nt_error_from_unix(errno);
191 if (!(sock->flags & SOCKET_FLAG_BLOCK)) {
192 int ret = set_blocking(new_fd, False);
195 return map_nt_error_from_unix(errno);
199 /* TODO: we could add a 'accept_check' hook here
200 * which get the black/white lists via socket_set_accept_filter()
201 * or something like that
205 (*new_sock) = talloc(NULL, struct socket_context);
208 return NT_STATUS_NO_MEMORY;
211 /* copy the socket_context */
212 (*new_sock)->type = sock->type;
213 (*new_sock)->state = SOCKET_STATE_SERVER_CONNECTED;
214 (*new_sock)->flags = sock->flags;
216 (*new_sock)->fd = new_fd;
218 (*new_sock)->private_data = NULL;
219 (*new_sock)->ops = sock->ops;
224 static NTSTATUS ipv4_recv(struct socket_context *sock, void *buf,
225 size_t wantlen, size_t *nread, uint32_t flags)
230 /* TODO: we need to map all flags here */
231 if (flags & SOCKET_FLAG_PEEK) {
235 if (flags & SOCKET_FLAG_BLOCK) {
241 gotlen = recv(sock->fd, buf, wantlen, flgs);
243 return NT_STATUS_END_OF_FILE;
244 } else if (gotlen == -1) {
245 return map_nt_error_from_unix(errno);
254 static NTSTATUS ipv4_recvfrom(struct socket_context *sock, void *buf,
255 size_t wantlen, size_t *nread, uint32_t flags,
256 const char **src_addr, int *src_port)
260 struct sockaddr_in from_addr;
261 socklen_t from_len = sizeof(from_addr);
264 if (flags & SOCKET_FLAG_PEEK) {
268 if (flags & SOCKET_FLAG_BLOCK) {
274 gotlen = recvfrom(sock->fd, buf, wantlen, flgs,
275 (struct sockaddr *)&from_addr, &from_len);
277 return NT_STATUS_END_OF_FILE;
278 } else if (gotlen == -1) {
279 return map_nt_error_from_unix(errno);
282 addr = inet_ntoa(from_addr.sin_addr);
284 return NT_STATUS_INTERNAL_ERROR;
286 *src_addr = talloc_strdup(sock, addr);
287 NT_STATUS_HAVE_NO_MEMORY(*src_addr);
288 *src_port = ntohs(from_addr.sin_port);
295 static NTSTATUS ipv4_send(struct socket_context *sock,
296 const DATA_BLOB *blob, size_t *sendlen, uint32_t flags)
303 len = send(sock->fd, blob->data, blob->length, flgs);
305 return map_nt_error_from_unix(errno);
313 static NTSTATUS ipv4_sendto(struct socket_context *sock,
314 const DATA_BLOB *blob, size_t *sendlen, uint32_t flags,
315 const char *dest_addr, int dest_port)
319 struct sockaddr_in srv_addr;
320 struct ipv4_addr addr;
322 ZERO_STRUCT(srv_addr);
323 #ifdef HAVE_SOCK_SIN_LEN
324 srv_addr.sin_len = sizeof(srv_addr);
326 addr = interpret_addr2(dest_addr);
327 srv_addr.sin_addr.s_addr = addr.addr;
328 srv_addr.sin_port = htons(dest_port);
329 srv_addr.sin_family = PF_INET;
333 len = sendto(sock->fd, blob->data, blob->length, flgs,
334 (struct sockaddr *)&srv_addr, sizeof(srv_addr));
336 return map_nt_error_from_unix(errno);
344 static NTSTATUS ipv4_set_option(struct socket_context *sock, const char *option, const char *val)
346 set_socket_options(sock->fd, option);
350 static char *ipv4_get_peer_name(struct socket_context *sock, TALLOC_CTX *mem_ctx)
352 struct sockaddr_in peer_addr;
353 socklen_t len = sizeof(peer_addr);
357 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
362 he = gethostbyaddr((char *)&peer_addr.sin_addr, sizeof(peer_addr.sin_addr), AF_INET);
367 return talloc_strdup(mem_ctx, he->h_name);
370 static char *ipv4_get_peer_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
372 struct sockaddr_in peer_addr;
373 socklen_t len = sizeof(peer_addr);
376 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
381 return talloc_strdup(mem_ctx, inet_ntoa(peer_addr.sin_addr));
384 static int ipv4_get_peer_port(struct socket_context *sock)
386 struct sockaddr_in peer_addr;
387 socklen_t len = sizeof(peer_addr);
390 ret = getpeername(sock->fd, (struct sockaddr *)&peer_addr, &len);
395 return ntohs(peer_addr.sin_port);
398 static char *ipv4_get_my_addr(struct socket_context *sock, TALLOC_CTX *mem_ctx)
400 struct sockaddr_in my_addr;
401 socklen_t len = sizeof(my_addr);
404 ret = getsockname(sock->fd, (struct sockaddr *)&my_addr, &len);
409 return talloc_strdup(mem_ctx, inet_ntoa(my_addr.sin_addr));
412 static int ipv4_get_my_port(struct socket_context *sock)
414 struct sockaddr_in my_addr;
415 socklen_t len = sizeof(my_addr);
418 ret = getsockname(sock->fd, (struct sockaddr *)&my_addr, &len);
423 return ntohs(my_addr.sin_port);
426 static int ipv4_get_fd(struct socket_context *sock)
431 static const struct socket_ops ipv4_ops = {
433 .fn_init = ipv4_init,
434 .fn_connect = ipv4_connect,
435 .fn_connect_complete = ipv4_connect_complete,
436 .fn_listen = ipv4_listen,
437 .fn_accept = ipv4_accept,
438 .fn_recv = ipv4_recv,
439 .fn_recvfrom = ipv4_recvfrom,
440 .fn_send = ipv4_send,
441 .fn_sendto = ipv4_sendto,
442 .fn_close = ipv4_close,
444 .fn_set_option = ipv4_set_option,
446 .fn_get_peer_name = ipv4_get_peer_name,
447 .fn_get_peer_addr = ipv4_get_peer_addr,
448 .fn_get_peer_port = ipv4_get_peer_port,
449 .fn_get_my_addr = ipv4_get_my_addr,
450 .fn_get_my_port = ipv4_get_my_port,
452 .fn_get_fd = ipv4_get_fd
455 const struct socket_ops *socket_ipv4_ops(enum socket_type type)