source: branches/samba-3.3.x/source/modules/vfs_smb_traffic_analyzer.c@ 259

Last change on this file since 259 was 221, checked in by Herwig Bauernfeind, 17 years ago

Update Samba 3.3 to 3.3.1
File size: 11.3 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
82 if (!res->ai_addr || res->ai_addrlen == 0) {
83 continue;
84 }
85
86 ZERO_STRUCT(ss);
87 memcpy(&ss, res->ai_addr, res->ai_addrlen);
88
89 sockfd = open_socket_out(SOCK_STREAM, &ss, port, 10000);
90 if (sockfd != -1) {
91 break;
92 }
93 }
94
95 if (ailist) {
96 freeaddrinfo(ailist);
97 }
98
99 if (sockfd == -1) {
100 DEBUG(1, ("smb_traffic_analyzer: unable to create "
101 "socket, error is %s",
102 strerror(errno)));
103 return -1;
104 }
105
106 return sockfd;
107}
108
109/* Connect to a unix domain socket */
110
111static int smb_traffic_analyzer_connect_unix_socket(vfs_handle_struct *handle,
112 const char *name)
113{
114 /* Create the socket to stad */
115 int len, sock;
116 struct sockaddr_un remote;
117
118 DEBUG(7, ("smb_traffic_analyzer_connect_unix_socket: "
119 "Unix domain socket mode. Using %s\n",
120 name ));
121
122 if ((sock = socket(AF_UNIX, SOCK_STREAM, 0)) == -1) {
123 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
124 "Couldn't create socket, "
125 "make sure stad is running!\n"));
126 return -1;
127 }
128 remote.sun_family = AF_UNIX;
129 strlcpy(remote.sun_path, name,
130 sizeof(remote.sun_path));
131 len=strlen(remote.sun_path) + sizeof(remote.sun_family);
132 if (connect(sock, (struct sockaddr *)&remote, len) == -1 ) {
133 DEBUG(1, ("smb_traffic_analyzer_connect_unix_socket: "
134 "Could not connect to "
135 "socket, make sure\nstad is running!\n"));
136 close(sock);
137 return -1;
138 }
139 return sock;
140}
141
142/* Private data allowing shared connection sockets. */
143
144struct refcounted_sock {
145 struct refcounted_sock *next, *prev;
146 char *name;
147 uint16_t port;
148 int sock;
149 unsigned int ref_count;
150};
151
152/* Send data over a socket */
153
154static void smb_traffic_analyzer_send_data(vfs_handle_struct *handle,
155 ssize_t result,
156 const char *file_name,
157 bool Write)
158{
159 struct refcounted_sock *rf_sock = NULL;
160 struct timeval tv;
161 time_t tv_sec;
162 struct tm *tm = NULL;
163 int seconds;
164 char *str = NULL;
165 char *username = NULL;
166 const char *anon_prefix = NULL;
167 const char *total_anonymization = NULL;
168 size_t len;
169
170 SMB_VFS_HANDLE_GET_DATA(handle, rf_sock, struct refcounted_sock, return);
171
172 if (rf_sock == NULL || rf_sock->sock == -1) {
173 DEBUG(1, ("smb_traffic_analyzer_send_data: socket is "
174 "closed\n"));
175 return;
176 }
177
178 GetTimeOfDay(&tv);
179 tv_sec = convert_timespec_to_time_t(convert_timeval_to_timespec(tv));
180 tm = localtime(&tv_sec);
181 if (!tm) {
182 return;
183 }
184 seconds=(float) (tv.tv_usec / 1000);
185
186 /* check if anonymization is required */
187
188 total_anonymization=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",
189 "total_anonymization", NULL);
190
191 anon_prefix=lp_parm_const_string(SNUM(handle->conn),"smb_traffic_analyzer",\
192 "anonymize_prefix", NULL );
193 if (anon_prefix!=NULL) {
194 if (total_anonymization!=NULL) {
195 username = talloc_asprintf(talloc_tos(),
196 "%s",
197 anon_prefix);
198 } else {
199 username = talloc_asprintf(talloc_tos(),
200 "%s%i",
201 anon_prefix,
202 str_checksum(
203 handle->conn->server_info->sanitized_username ) );
204 }
205
206 } else {
207 username = handle->conn->server_info->sanitized_username;
208 }
209
210 if (!username) {
211 return;
212 }
213
214 str = talloc_asprintf(talloc_tos(),
215 "V1,%u,\"%s\",\"%s\",\"%c\",\"%s\",\"%s\","
216 "\"%04d-%02d-%02d %02d:%02d:%02d.%03d\"\n",
217 (unsigned int)result,
218 username,
219 pdb_get_domain(handle->conn->server_info->sam_account),
220 Write ? 'W' : 'R',
221 handle->conn->connectpath,
222 file_name,
223 tm->tm_year+1900,
224 tm->tm_mon+1,
225 tm->tm_mday,
226 tm->tm_hour,
227 tm->tm_min,
228 tm->tm_sec,
229 (int)seconds);
230
231 if (!str) {
232 return;
233 }
234
235 len = strlen(str);
236
237 DEBUG(10, ("smb_traffic_analyzer_send_data_socket: sending %s\n",
238 str));
239 if (write_data(rf_sock->sock, str, len) != len) {
240 DEBUG(1, ("smb_traffic_analyzer_send_data_socket: "
241 "error sending data to socket!\n"));
242 return ;
243 }
244}
245
246static struct refcounted_sock *sock_list;
247
248static void smb_traffic_analyzer_free_data(void **pptr)
249{
250 struct refcounted_sock *rf_sock = *(struct refcounted_sock **)pptr;
251 if (rf_sock == NULL) {
252 return;
253 }
254 rf_sock->ref_count--;
255 if (rf_sock->ref_count != 0) {
256 return;
257 }
258 if (rf_sock->sock != -1) {
259 close(rf_sock->sock);
260 }
261 DLIST_REMOVE(sock_list, rf_sock);
262 TALLOC_FREE(rf_sock);
263}
264
265static int smb_traffic_analyzer_connect(struct vfs_handle_struct *handle,
266 const char *service,
267 const char *user)
268{
269 connection_struct *conn = handle->conn;
270 enum sock_type st = smb_traffic_analyzer_connMode(handle);
271 struct refcounted_sock *rf_sock = NULL;
272 const char *name = (st == UNIX_DOMAIN_SOCKET) ? LOCAL_PATHNAME :
273 lp_parm_const_string(SNUM(conn),
274 "smb_traffic_analyzer",
275 "host", "localhost");
276 uint16_t port = (st == UNIX_DOMAIN_SOCKET) ? 0 :
277 atoi( lp_parm_const_string(SNUM(conn),
278 "smb_traffic_analyzer", "port", "9430"));
279
280 /* Are we already connected ? */
281 for (rf_sock = sock_list; rf_sock; rf_sock = rf_sock->next) {
282 if (port == rf_sock->port &&
283 (strcmp(name, rf_sock->name) == 0)) {
284 break;
285 }
286 }
287
288 /* If we're connected already, just increase the
289 * reference count. */
290 if (rf_sock) {
291 rf_sock->ref_count++;
292 } else {
293 /* New connection. */
294 rf_sock = TALLOC_ZERO_P(NULL, struct refcounted_sock);
295 if (rf_sock == NULL) {
296 errno = ENOMEM;
297 return -1;
298 }
299 rf_sock->name = talloc_strdup(rf_sock, name);
300 if (rf_sock->name == NULL) {
301 TALLOC_FREE(rf_sock);
302 errno = ENOMEM;
303 return -1;
304 }
305 rf_sock->port = port;
306 rf_sock->ref_count = 1;
307
308 if (st == UNIX_DOMAIN_SOCKET) {
309 rf_sock->sock = smb_traffic_analyzer_connect_unix_socket(handle,
310 name);
311 } else {
312
313 rf_sock->sock = smb_traffic_analyzer_connect_inet_socket(handle,
314 name,
315 port);
316 }
317 if (rf_sock->sock == -1) {
318 TALLOC_FREE(rf_sock);
319 return -1;
320 }
321 DLIST_ADD(sock_list, rf_sock);
322 }
323
324 /* Store the private data. */
325 SMB_VFS_HANDLE_SET_DATA(handle, rf_sock, smb_traffic_analyzer_free_data,
326 struct refcounted_sock, return -1);
327 return SMB_VFS_NEXT_CONNECT(handle, service, user);
328}
329
330/* VFS Functions: write, read, pread, pwrite for now */
331
332static ssize_t smb_traffic_analyzer_read(vfs_handle_struct *handle, \
333 files_struct *fsp, void *data, size_t n)
334{
335 ssize_t result;
336
337 result = SMB_VFS_NEXT_READ(handle, fsp, data, n);
338 DEBUG(10, ("smb_traffic_analyzer_read: READ: %s\n", fsp->fsp_name ));
339
340 smb_traffic_analyzer_send_data(handle,
341 result,
342 fsp->fsp_name,
343 false);
344 return result;
345}
346
347
348static ssize_t smb_traffic_analyzer_pread(vfs_handle_struct *handle, \
349 files_struct *fsp, void *data, size_t n, SMB_OFF_T offset)
350{
351 ssize_t result;
352
353 result = SMB_VFS_NEXT_PREAD(handle, fsp, data, n, offset);
354
355 DEBUG(10, ("smb_traffic_analyzer_pread: PREAD: %s\n", fsp->fsp_name ));
356
357 smb_traffic_analyzer_send_data(handle,
358 result,
359 fsp->fsp_name,
360 false);
361
362 return result;
363}
364
365static ssize_t smb_traffic_analyzer_write(vfs_handle_struct *handle, \
366 files_struct *fsp, const void *data, size_t n)
367{
368 ssize_t result;
369
370 result = SMB_VFS_NEXT_WRITE(handle, fsp, data, n);
371
372 DEBUG(10, ("smb_traffic_analyzer_write: WRITE: %s\n", fsp->fsp_name ));
373
374 smb_traffic_analyzer_send_data(handle,
375 result,
376 fsp->fsp_name,
377 true);
378 return result;
379}
380
381static ssize_t smb_traffic_analyzer_pwrite(vfs_handle_struct *handle, \
382 files_struct *fsp, const void *data, size_t n, SMB_OFF_T offset)
383{
384 ssize_t result;
385
386 result = SMB_VFS_NEXT_PWRITE(handle, fsp, data, n, offset);
387
388 DEBUG(10, ("smb_traffic_analyzer_pwrite: PWRITE: %s\n", fsp->fsp_name ));
389
390 smb_traffic_analyzer_send_data(handle,
391 result,
392 fsp->fsp_name,
393 true);
394 return result;
395}
396
397/* VFS operations we use */
398
399static vfs_op_tuple smb_traffic_analyzer_tuples[] = {
400
401 {SMB_VFS_OP(smb_traffic_analyzer_connect), SMB_VFS_OP_CONNECT,
402 SMB_VFS_LAYER_LOGGER},
403 {SMB_VFS_OP(smb_traffic_analyzer_read), SMB_VFS_OP_READ,
404 SMB_VFS_LAYER_LOGGER},
405 {SMB_VFS_OP(smb_traffic_analyzer_pread), SMB_VFS_OP_PREAD,
406 SMB_VFS_LAYER_LOGGER},
407 {SMB_VFS_OP(smb_traffic_analyzer_write), SMB_VFS_OP_WRITE,
408 SMB_VFS_LAYER_LOGGER},
409 {SMB_VFS_OP(smb_traffic_analyzer_pwrite), SMB_VFS_OP_PWRITE,
410 SMB_VFS_LAYER_LOGGER},
411 {SMB_VFS_OP(NULL),SMB_VFS_OP_NOOP,SMB_VFS_LAYER_NOOP}
412};
413
414/* Module initialization */
415
416NTSTATUS vfs_smb_traffic_analyzer_init(void)
417{
418 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, \
419 "smb_traffic_analyzer", smb_traffic_analyzer_tuples);
420
421 if (!NT_STATUS_IS_OK(ret)) {
422 return ret;
423 }
424
425 vfs_smb_traffic_analyzer_debug_level =
426 debug_add_class("smb_traffic_analyzer");
427
428 if (vfs_smb_traffic_analyzer_debug_level == -1) {
429 vfs_smb_traffic_analyzer_debug_level = DBGC_VFS;
430 DEBUG(1, ("smb_traffic_analyzer_init: Couldn't register custom"
431 "debugging class!\n"));
432 } else {
433 DEBUG(3, ("smb_traffic_analyzer_init: Debug class number of"
434 "'smb_traffic_analyzer': %d\n", \
435 vfs_smb_traffic_analyzer_debug_level));
436 }
437
438 return ret;
439}
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