source: branches/samba-3.2.x/source/smbd/message.c@ 204

Last change on this file since 204 was 133, checked in by Paul Smedley, 17 years ago

Update trunk to 3.2.0pre3
File size: 6.7 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 SMB messaging
4 Copyright (C) Andrew Tridgell 1992-1998
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18*/
19/*
20 This file handles the messaging system calls for winpopup style
21 messages
22*/
23
24
25#include "includes.h"
26
27extern userdom_struct current_user_info;
28
29struct msg_state {
30 char *from;
31 char *to;
32 char *msg;
33};
34
35static struct msg_state *smbd_msg_state;
36
37/****************************************************************************
38 Deliver the message.
39****************************************************************************/
40
41static void msg_deliver(struct msg_state *state)
42{
43 TALLOC_CTX *frame = talloc_stackframe();
44 char *name = NULL;
45 int i;
46 int fd;
47 char *msg;
48 int len;
49 ssize_t sz;
50 fstring alpha_buf;
51 char *s;
52
53 if (! (*lp_msg_command())) {
54 DEBUG(1,("no messaging command specified\n"));
55 goto done;
56 }
57
58 /* put it in a temporary file */
59 name = talloc_asprintf(talloc_tos(), "%s/msg.XXXXXX", tmpdir());
60 if (!name) {
61 goto done;
62 }
63 fd = smb_mkstemp(name);
64
65 if (fd == -1) {
66 DEBUG(1, ("can't open message file %s: %s\n", name,
67 strerror(errno)));
68 goto done;
69 }
70
71 /*
72 * Incoming message is in DOS codepage format. Convert to UNIX.
73 */
74
75 len = convert_string_talloc(
76 talloc_tos(), CH_DOS, CH_UNIX, state->msg,
77 talloc_get_size(state->msg), (void *)&msg, true);
78
79 if (len == -1) {
80 DEBUG(3, ("Conversion failed, delivering message in DOS "
81 "codepage format\n"));
82 msg = state->msg;
83 }
84
85 for (i = 0; i < len; i++) {
86 if ((msg[i] == '\r') && (i < (len-1)) && (msg[i+1] == '\n')) {
87 continue;
88 }
89 sz = write(fd, &msg[i], 1);
90 if ( sz != 1 ) {
91 DEBUG(0, ("Write error to fd %d: %ld(%s)\n", fd,
92 (long)sz, strerror(errno)));
93 }
94 }
95
96 close(fd);
97
98 /* run the command */
99 s = talloc_strdup(talloc_tos(), lp_msg_command());
100 if (s == NULL) {
101 goto done;
102 }
103
104 alpha_strcpy(alpha_buf, state->from, NULL, sizeof(alpha_buf));
105
106 s = talloc_string_sub(talloc_tos(), s, "%f", alpha_buf);
107 if (s == NULL) {
108 goto done;
109 }
110
111 alpha_strcpy(alpha_buf, state->to, NULL, sizeof(alpha_buf));
112
113 s = talloc_string_sub(talloc_tos(), s, "%t", alpha_buf);
114 if (s == NULL) {
115 goto done;
116 }
117
118 s = talloc_sub_basic(talloc_tos(), current_user_info.smb_name,
119 current_user_info.domain, s);
120 if (s == NULL) {
121 goto done;
122 }
123
124 s = talloc_string_sub(talloc_tos(), s, "%s", name);
125 if (s == NULL) {
126 goto done;
127 }
128 smbrun(s,NULL);
129
130 done:
131 TALLOC_FREE(frame);
132 return;
133}
134
135/****************************************************************************
136 Reply to a sends.
137 conn POINTER CAN BE NULL HERE !
138****************************************************************************/
139
140void reply_sends(struct smb_request *req)
141{
142 struct msg_state *state;
143 int len;
144 char *msg;
145 char *p;
146
147 START_PROFILE(SMBsends);
148
149 if (!(*lp_msg_command())) {
150 reply_doserror(req, ERRSRV, ERRmsgoff);
151 END_PROFILE(SMBsends);
152 return;
153 }
154
155 state = talloc(talloc_tos(), struct msg_state);
156
157 p = smb_buf(req->inbuf)+1;
158 p += srvstr_pull_buf_talloc(
159 state, (char *)req->inbuf, req->flags2, &state->from, p,
160 STR_ASCII|STR_TERMINATE) + 1;
161 p += srvstr_pull_buf_talloc(
162 state, (char *)req->inbuf, req->flags2, &state->to, p,
163 STR_ASCII|STR_TERMINATE) + 1;
164
165 msg = p;
166
167 len = SVAL(msg,0);
168 len = MIN(len, smb_bufrem(req->inbuf, msg+2));
169
170 state->msg = talloc_array(state, char, len);
171
172 if (state->msg == NULL) {
173 reply_nterror(req, NT_STATUS_NO_MEMORY);
174 END_PROFILE(SMBsends);
175 return;
176 }
177
178 memcpy(state->msg, msg+2, len);
179
180 msg_deliver(state);
181
182 reply_outbuf(req, 0, 0);
183
184 END_PROFILE(SMBsends);
185 return;
186}
187
188/****************************************************************************
189 Reply to a sendstrt.
190 conn POINTER CAN BE NULL HERE !
191****************************************************************************/
192
193void reply_sendstrt(struct smb_request *req)
194{
195 char *p;
196
197 START_PROFILE(SMBsendstrt);
198
199 if (!(*lp_msg_command())) {
200 reply_doserror(req, ERRSRV, ERRmsgoff);
201 END_PROFILE(SMBsendstrt);
202 return;
203 }
204
205 TALLOC_FREE(smbd_msg_state);
206
207 smbd_msg_state = TALLOC_ZERO_P(NULL, struct msg_state);
208
209 if (smbd_msg_state == NULL) {
210 reply_nterror(req, NT_STATUS_NO_MEMORY);
211 END_PROFILE(SMBsendstrt);
212 return;
213 }
214
215 p = smb_buf(req->inbuf)+1;
216 p += srvstr_pull_buf_talloc(
217 smbd_msg_state, (char *)req->inbuf, req->flags2,
218 &smbd_msg_state->from, p, STR_ASCII|STR_TERMINATE) + 1;
219 p += srvstr_pull_buf_talloc(
220 smbd_msg_state, (char *)req->inbuf, req->flags2,
221 &smbd_msg_state->to, p, STR_ASCII|STR_TERMINATE) + 1;
222
223 DEBUG( 3, ( "SMBsendstrt (from %s to %s)\n", smbd_msg_state->from,
224 smbd_msg_state->to ) );
225
226 reply_outbuf(req, 0, 0);
227
228 END_PROFILE(SMBsendstrt);
229 return;
230}
231
232/****************************************************************************
233 Reply to a sendtxt.
234 conn POINTER CAN BE NULL HERE !
235****************************************************************************/
236
237void reply_sendtxt(struct smb_request *req)
238{
239 int len;
240 char *msg;
241 char *tmp;
242 size_t old_len;
243
244 START_PROFILE(SMBsendtxt);
245
246 if (! (*lp_msg_command())) {
247 reply_doserror(req, ERRSRV, ERRmsgoff);
248 END_PROFILE(SMBsendtxt);
249 return;
250 }
251
252 if (smbd_msg_state == NULL) {
253 reply_nterror(req, NT_STATUS_INVALID_PARAMETER);
254 END_PROFILE(SMBsendtxt);
255 return;
256 }
257
258 msg = smb_buf(req->inbuf) + 1;
259
260 old_len = talloc_get_size(smbd_msg_state->msg);
261
262 len = MIN(SVAL(msg, 0), smb_bufrem(req->inbuf, msg+2));
263
264 tmp = TALLOC_REALLOC_ARRAY(smbd_msg_state, smbd_msg_state->msg,
265 char, old_len + len);
266
267 if (tmp == NULL) {
268 reply_nterror(req, NT_STATUS_NO_MEMORY);
269 END_PROFILE(SMBsendtxt);
270 return;
271 }
272
273 smbd_msg_state->msg = tmp;
274
275 memcpy(&smbd_msg_state->msg[old_len], msg+2, len);
276
277 DEBUG( 3, ( "SMBsendtxt\n" ) );
278
279 reply_outbuf(req, 0, 0);
280
281 END_PROFILE(SMBsendtxt);
282 return;
283}
284
285/****************************************************************************
286 Reply to a sendend.
287 conn POINTER CAN BE NULL HERE !
288****************************************************************************/
289
290void reply_sendend(struct smb_request *req)
291{
292 START_PROFILE(SMBsendend);
293
294 if (! (*lp_msg_command())) {
295 reply_doserror(req, ERRSRV, ERRmsgoff);
296 END_PROFILE(SMBsendend);
297 return;
298 }
299
300 DEBUG(3,("SMBsendend\n"));
301
302 msg_deliver(smbd_msg_state);
303
304 TALLOC_FREE(smbd_msg_state);
305
306 reply_outbuf(req, 0, 0);
307
308 END_PROFILE(SMBsendend);
309 return;
310}
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