source: trunk/server/source3/modules/vfs_smb_traffic_analyzer.c@ 596

Last change on this file since 596 was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 10.8 KB
Line 
1/*
2 * traffic-analyzer VFS module. Measure the smb traffic users create
3 * on the net.
4 *
5 * Copyright (C) Holger Hetterich, 2008
6 * Copyright (C) Jeremy Allison, 2008
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, see <http://www.gnu.org/licenses/>.
20 */
21
22#include "includes.h"
23
24/* abstraction for the send_over_network function */
25
26enum sock_type {INTERNET_SOCKET = 0, UNIX_DOMAIN_SOCKET};
27
28#define LOCAL_PATHNAME "/var/tmp/stadsocket"
29
30static int vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
31
32static enum sock_type smb_traffic_analyzer_connMode(vfs_handle_struct *handle)
33{
34 connection_struct *conn = handle->conn;
35 const char *Mode;
36 Mode=lp_parm_const_string(SNUM(conn), "smb_traffic_analyzer","mode", \
37 "internet_socket");
38 if (strstr(Mode,"unix_domain_socket")) {
39 return UNIX_DOMAIN_SOCKET;
40 } else {
41 return INTERNET_SOCKET;
42 }
43}
44
45
46/* Connect to an internet socket */
47
48static int smb_traffic_analyzer_connect_inet_socket(vfs_handle_struct *handle,
49 const char *name, uint16_t port)
50{
51 /* Create a streaming Socket */
52 int sockfd = -1;
53 struct addrinfo hints;
54 struct addrinfo *ailist = NULL;
55 struct addrinfo *res = NULL;
56 int ret;
57
58 ZERO_STRUCT(hints);
59 /* By default make sure it supports TCP. */
60 hints.ai_socktype = SOCK_STREAM;
61 hints.ai_flags = AI_ADDRCONFIG;
62
63 ret = getaddrinfo(name,
64 NULL,
65 &hints,
66 &ailist);
67
68 if (ret) {
69 DEBUG(3,("smb_traffic_analyzer_connect_inet_socket: "
70 "getaddrinfo failed for name %s [%s]\n",
71 name,
72 gai_strerror(ret) ));
73 return -1;
74 }
75
76 DEBUG(3,("smb_traffic_analyzer: Internet socket mode. Hostname: %s,"
77 "Port: %i\n", name, port));
78
79 for (res = ailist; res; res = res->ai_next) {
80 struct sockaddr_storage ss;
81 NTSTATUS status;
82
83 if (!res->ai_addr || res->ai_addrlen == 0) {
84 continue;
85 }
86
87 ZERO_STRUCT(ss);
88 memcpy(&ss, res->ai_addr, res->ai_addrlen);
89
90 status = open_socket_out(&ss, port, 10000, &sockfd);
91 if (NT_STATUS_IS_OK(status)) {
92 break;
93 }
94 }
95
96 if (ailist) {
97 freeaddrinfo(ailist);
98 }
99
100 if (sockfd == -1) {
101 DEBUG(1, ("smb_traffic_analyzer: unable to create "
102 "socket, error is %s",
103 strerror(errno)));
104 return -1;
105 }
106
107 return sockfd;
108}
109
110/* Connect to a unix domain socket */
111
112static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
113 const char *name)
114{
115 /* Create the socket to stad */
116 int len, sock;
117 struct sockaddr_un remote;
118
119 DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
120 "Unix domain socket mode. Using %s\n",
121 name ));
122
123 if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
124 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
125 "Couldn't create socket, "
126 "make sure stad is running!\n"));
127 return -1;
128 }
129 remote.sun_family = AF_UNIX;
130 strlcpy(remote.sun_path, name,
131 sizeof(remote.sun_path));
132 len=strlen(remote.sun_path) + sizeof(remote.sun_family);
133 if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
134 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
135 "Could not connect to "
136 "socket, make sure\nstad is running!\n"));
137 close(sock);
138 return -1;
139 }
140 return sock;
141}
142
143/* Private data allowing shared connection sockets. */
144
145struct refcounted_sock {
146 struct refcounted_sock *next, *prev;
147 char *name;
148 uint16_t port;
149 int sock;
150 unsigned int ref_count;
151};
152
153/* Send data over a socket */
154
155static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
156 ssize_t result,
157 const char *file_name,
158 bool Write)
159{
160 struct refcounted_sock *rf_sock = NULL;
161 struct timeval tv;
162 time_t tv_sec;
163 struct tm *tm = NULL;
164 int seconds;
165 char *str = NULL;
166 char *username = NULL;
167 const char *anon_prefix = NULL;
168 const char *total_anonymization = NULL;
169 size_t len;
170
171 SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
172
173 if (rf_sock == NULL || rf_sock->sock == -1) {
174 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
175 "closed\n"));
176 return;
177 }
178
179 GetTimeOfDay(&tv);
180 tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
181 tm = localtime(&tv_sec);
182 if (!tm) {
183 return;
184 }
185 seconds=(float) (tv.tv_usec / 1000);
186
187 /* check if anonymization is required */
188
189 total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
190 "total_anonymization", NULL);
191
192 anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
193 "anonymize_prefix", NULL );
194 if (anon_prefix!=NULL) {
195 if (total_anonymization!=NULL) {
196 username = talloc_asprintf(talloc_tos(),
197 "%s",
198 anon_prefix);
199 } else {
200 username = talloc_asprintf(talloc_tos(),
201 "%s%i",
202 anon_prefix,
203 str_checksum(
204 handle->conn->server_info->sanitized_username ) );
205 }
206
207 } else {
208 username = handle->conn->server_info->sanitized_username;
209 }
210
211 if (!username) {
212 return;
213 }
214
215 str = talloc_asprintf(talloc_tos(),
216 "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
217 "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
218 (unsigned int)result,
219 username,
220 pdb_get_domain(handle->conn->server_info->sam_account),
221 Write ? 'W' : 'R',
222 handle->conn->connectpath,
223 file_name,
224 tm->tm_year+1900,
225 tm->tm_mon+1,
226 tm->tm_mday,
227 tm->tm_hour,
228 tm->tm_min,
229 tm->tm_sec,
230 (int)seconds);
231
232 if (!str) {
233 return;
234 }
235
236 len = strlen(str);
237
238 DEBUG(10, ("smb_traffic_analyzer_send_data_socket: sending %s\n",
239 str));
240 if (write_data(rf_sock->sock, str, len) != len) {
241 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
242 "error sending data to socket!\n"));
243 return ;
244 }
245}
246
247static struct refcounted_sock *sock_list;
248
249static void smb_traffic_analyzer_free_data(void **pptr)
250{
251 struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
252 if (rf_sock == NULL) {
253 return;
254 }
255 rf_sock->ref_count--;
256 if (rf_sock->ref_count != 0) {
257 return;
258 }
259 if (rf_sock->sock != -1) {
260 close(rf_sock->sock);
261 }
262 DLIST_REMOVE(sock_list, rf_sock);
263 TALLOC_FREE(rf_sock);
264}
265
266static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
267 const char *service,
268 const char *user)
269{
270 connection_struct *conn = handle->conn;
271 enum sock_type st = smb_traffic_analyzer_connMode(handle);
272 struct refcounted_sock *rf_sock = NULL;
273 const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
274 lp_parm_const_string(SNUM(conn),
275 "smb_traffic_analyzer",
276 "host", "localhost");
277 uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
278 atoi( lp_parm_const_string(SNUM(conn),
279 "smb_traffic_analyzer", "port", "9430"));
280 int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
281
282 if (ret < 0) {
283 return ret;
284 }
285
286 /* Are we already connected ? */
287 for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
288 if (port == rf_sock->port &&
289 (strcmp(name, rf_sock->name) == 0)) {
290 break;
291 }
292 }
293
294 /* If we're connected already, just increase the
295 * reference count. */
296 if (rf_sock) {
297 rf_sock->ref_count++;
298 } else {
299 /* New connection. */
300 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
301 if (rf_sock == NULL) {
302 SMB_VFS_NEXT_DISCONNECT(handle);
303 errno = ENOMEM;
304 return -1;
305 }
306 rf_sock->name = talloc_strdup(rf_sock, name);
307 if (rf_sock->name == NULL) {
308 SMB_VFS_NEXT_DISCONNECT(handle);
309 TALLOC_FREE(rf_sock);
310 errno = ENOMEM;
311 return -1;
312 }
313 rf_sock->port = port;
314 rf_sock->ref_count = 1;
315
316 if (st == UNIX_DOMAIN_SOCKET) {
317 rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
318 name);
319 } else {
320
321 rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
322 name,
323 port);
324 }
325 if (rf_sock->sock == -1) {
326 SMB_VFS_NEXT_DISCONNECT(handle);
327 TALLOC_FREE(rf_sock);
328 return -1;
329 }
330 DLIST_ADD(sock_list, rf_sock);
331 }
332
333 /* Store the private data. */
334 SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
335 struct refcounted_sock, return -1);
336 return 0;
337}
338
339/* VFS Functions: write, read, pread, pwrite for now */
340
341static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
342 files_struct *fsp, void *data, size_t n)
343{
344 ssize_t result;
345
346 result = SMB_VFS_NEXT_READ(handle, fsp, data, n);
347 DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp_str_dbg(fsp)));
348
349 smb_traffic_analyzer_send_data(handle,
350 result,
351 fsp->fsp_name->base_name,
352 false);
353 return result;
354}
355
356
357static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
358 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
359{
360 ssize_t result;
361
362 result = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
363
364 DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n",
365 fsp_str_dbg(fsp)));
366
367 smb_traffic_analyzer_send_data(handle,
368 result,
369 fsp->fsp_name->base_name,
370 false);
371
372 return result;
373}
374
375static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
376 files_struct *fsp, const void *data, size_t n)
377{
378 ssize_t result;
379
380 result = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
381
382 DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n",
383 fsp_str_dbg(fsp)));
384
385 smb_traffic_analyzer_send_data(handle,
386 result,
387 fsp->fsp_name->base_name,
388 true);
389 return result;
390}
391
392static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
393 files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
394{
395 ssize_t result;
396
397 result = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
398
399 DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", fsp_str_dbg(fsp)));
400
401 smb_traffic_analyzer_send_data(handle,
402 result,
403 fsp->fsp_name->base_name,
404 true);
405 return result;
406}
407
408static struct vfs_fn_pointers vfs_smb_traffic_analyzer_fns = {
409 .connect_fn = smb_traffic_analyzer_connect,
410 .vfs_read = smb_traffic_analyzer_read,
411 .pread = smb_traffic_analyzer_pread,
412 .write = smb_traffic_analyzer_write,
413 .pwrite = smb_traffic_analyzer_pwrite,
414};
415
416/* Module initialization */
417
418NTSTATUS vfs_smb_traffic_analyzer_init(void)
419{
420 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
421 "smb_traffic_analyzer",
422 &vfs_smb_traffic_analyzer_fns);
423
424 if (!NT_STATUS_IS_OK(ret)) {
425 return ret;
426 }
427
428 vfs_smb_traffic_analyzer_debug_level =
429 debug_add_class("smb_traffic_analyzer");
430
431 if (vfs_smb_traffic_analyzer_debug_level == -1) {
432 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
433 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
434 "debugging class!\n"));
435 } else {
436 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
437 "'smb_traffic_analyzer': %d\n", \
438 vfs_smb_traffic_analyzer_debug_level));
439 }
440
441 return ret;
442}
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