/* [<][>][^][v][top][bottom][index][help] */
DEFINITIONS
This source file includes following definitions.
- smbcli_sock_connect_send
- smbcli_sock_connect_recv_conn
- smbcli_sock_connect_recv
- smbcli_sock_connect
- smbcli_sock_dead
- smbcli_sock_set_options
- smbcli_sock_connect_byname
1 /*
2 Unix SMB/CIFS implementation.
3
4 SMB client socket context management functions
5
6 Copyright (C) Andrew Tridgell 1994-2005
7 Copyright (C) James Myers 2003 <myersjj@samba.org>
8
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 3 of the License, or
12 (at your option) any later version.
13
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.
18
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 */
22
23 #include "includes.h"
24 #include "lib/events/events.h"
25 #include "libcli/raw/libcliraw.h"
26 #include "libcli/composite/composite.h"
27 #include "lib/socket/socket.h"
28 #include "libcli/resolve/resolve.h"
29 #include "param/param.h"
30 #include "libcli/raw/raw_proto.h"
31
32 struct sock_connect_state {
33 struct composite_context *ctx;
34 const char *host_name;
35 int num_ports;
36 uint16_t *ports;
37 const char *socket_options;
38 struct smbcli_socket *result;
39 };
40
41 /*
42 connect a smbcli_socket context to an IP/port pair
43 if port is 0 then choose 445 then 139
44 */
45
46 static void smbcli_sock_connect_recv_conn(struct composite_context *ctx);
47
48 struct composite_context *smbcli_sock_connect_send(TALLOC_CTX *mem_ctx,
/* [<][>][^][v][top][bottom][index][help] */
49 const char *host_addr,
50 const char **ports,
51 const char *host_name,
52 struct resolve_context *resolve_ctx,
53 struct tevent_context *event_ctx,
54 const char *socket_options)
55 {
56 struct composite_context *result, *ctx;
57 struct sock_connect_state *state;
58 int i;
59
60 result = talloc_zero(mem_ctx, struct composite_context);
61 if (result == NULL) goto failed;
62 result->state = COMPOSITE_STATE_IN_PROGRESS;
63
64 result->event_ctx = talloc_reference(result, event_ctx);
65 if (result->event_ctx == NULL) goto failed;
66
67 state = talloc(result, struct sock_connect_state);
68 if (state == NULL) goto failed;
69 state->ctx = result;
70 result->private_data = state;
71
72 state->host_name = talloc_strdup(state, host_name);
73 if (state->host_name == NULL) goto failed;
74
75 state->num_ports = str_list_length(ports);
76 state->ports = talloc_array(state, uint16_t, state->num_ports);
77 if (state->ports == NULL) goto failed;
78 for (i=0;ports[i];i++) {
79 state->ports[i] = atoi(ports[i]);
80 }
81 state->socket_options = talloc_reference(state, socket_options);
82
83 ctx = socket_connect_multi_send(state, host_addr,
84 state->num_ports, state->ports,
85 resolve_ctx,
86 state->ctx->event_ctx);
87 if (ctx == NULL) goto failed;
88 ctx->async.fn = smbcli_sock_connect_recv_conn;
89 ctx->async.private_data = state;
90 return result;
91
92 failed:
93 talloc_free(result);
94 return NULL;
95 }
96
97 static void smbcli_sock_connect_recv_conn(struct composite_context *ctx)
/* [<][>][^][v][top][bottom][index][help] */
98 {
99 struct sock_connect_state *state =
100 talloc_get_type(ctx->async.private_data,
101 struct sock_connect_state);
102 struct socket_context *sock;
103 uint16_t port;
104
105 state->ctx->status = socket_connect_multi_recv(ctx, state, &sock,
106 &port);
107 if (!composite_is_ok(state->ctx)) return;
108
109 state->ctx->status =
110 socket_set_option(sock, state->socket_options, NULL);
111 if (!composite_is_ok(state->ctx)) return;
112
113
114 state->result = talloc_zero(state, struct smbcli_socket);
115 if (composite_nomem(state->result, state->ctx)) return;
116
117 state->result->sock = talloc_steal(state->result, sock);
118 state->result->port = port;
119 state->result->hostname = talloc_steal(sock, state->host_name);
120
121 state->result->event.ctx =
122 talloc_reference(state->result, state->ctx->event_ctx);
123 if (composite_nomem(state->result->event.ctx, state->ctx)) return;
124
125 composite_done(state->ctx);
126 }
127
128 /*
129 finish a smbcli_sock_connect_send() operation
130 */
131 NTSTATUS smbcli_sock_connect_recv(struct composite_context *c,
/* [<][>][^][v][top][bottom][index][help] */
132 TALLOC_CTX *mem_ctx,
133 struct smbcli_socket **result)
134 {
135 NTSTATUS status = composite_wait(c);
136 if (NT_STATUS_IS_OK(status)) {
137 struct sock_connect_state *state =
138 talloc_get_type(c->private_data,
139 struct sock_connect_state);
140 *result = talloc_steal(mem_ctx, state->result);
141 }
142 talloc_free(c);
143 return status;
144 }
145
146 /*
147 connect a smbcli_socket context to an IP/port pair
148 if port is 0 then choose the ports listed in smb.conf (normally 445 then 139)
149
150 sync version of the function
151 */
152 NTSTATUS smbcli_sock_connect(TALLOC_CTX *mem_ctx,
/* [<][>][^][v][top][bottom][index][help] */
153 const char *host_addr, const char **ports,
154 const char *host_name,
155 struct resolve_context *resolve_ctx,
156 struct tevent_context *event_ctx,
157 const char *socket_options,
158 struct smbcli_socket **result)
159 {
160 struct composite_context *c =
161 smbcli_sock_connect_send(mem_ctx, host_addr, ports, host_name,
162 resolve_ctx,
163 event_ctx, socket_options);
164 return smbcli_sock_connect_recv(c, mem_ctx, result);
165 }
166
167
168 /****************************************************************************
169 mark the socket as dead
170 ****************************************************************************/
171 _PUBLIC_ void smbcli_sock_dead(struct smbcli_socket *sock)
/* [<][>][^][v][top][bottom][index][help] */
172 {
173 talloc_free(sock->event.fde);
174 sock->event.fde = NULL;
175 talloc_free(sock->sock);
176 sock->sock = NULL;
177 }
178
179 /****************************************************************************
180 Set socket options on a open connection.
181 ****************************************************************************/
182 void smbcli_sock_set_options(struct smbcli_socket *sock, const char *options)
/* [<][>][^][v][top][bottom][index][help] */
183 {
184 socket_set_option(sock->sock, options, NULL);
185 }
186
187 /****************************************************************************
188 resolve a hostname and connect
189 ****************************************************************************/
190 _PUBLIC_ struct smbcli_socket *smbcli_sock_connect_byname(const char *host, const char **ports,
/* [<][>][^][v][top][bottom][index][help] */
191 TALLOC_CTX *mem_ctx,
192 struct resolve_context *resolve_ctx,
193 struct tevent_context *event_ctx,
194 const char *socket_options)
195 {
196 int name_type = NBT_NAME_SERVER;
197 const char *address;
198 NTSTATUS status;
199 struct nbt_name nbt_name;
200 char *name, *p;
201 TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
202 struct smbcli_socket *result;
203
204 if (event_ctx == NULL) {
205 DEBUG(0, ("Invalid NULL event context passed in as parameter\n"));
206 return NULL;
207 }
208
209 if (tmp_ctx == NULL) {
210 DEBUG(0, ("talloc_new failed\n"));
211 return NULL;
212 }
213
214 name = talloc_strdup(tmp_ctx, host);
215 if (name == NULL) {
216 DEBUG(0, ("talloc_strdup failed\n"));
217 talloc_free(tmp_ctx);
218 return NULL;
219 }
220
221 /* allow hostnames of the form NAME#xx and do a netbios lookup */
222 if ((p = strchr(name, '#'))) {
223 name_type = strtol(p+1, NULL, 16);
224 *p = 0;
225 }
226
227 make_nbt_name(&nbt_name, host, name_type);
228
229 status = resolve_name(resolve_ctx, &nbt_name, tmp_ctx, &address, event_ctx);
230 if (!NT_STATUS_IS_OK(status)) {
231 talloc_free(tmp_ctx);
232 return NULL;
233 }
234
235 status = smbcli_sock_connect(mem_ctx, address, ports, name, resolve_ctx,
236 event_ctx,
237 socket_options, &result);
238
239 if (!NT_STATUS_IS_OK(status)) {
240 DEBUG(9, ("smbcli_sock_connect failed: %s\n",
241 nt_errstr(status)));
242 talloc_free(tmp_ctx);
243 return NULL;
244 }
245
246 talloc_free(tmp_ctx);
247
248 return result;
249 }