source: vendor/current/source3/modules/vfs_extd_audit.c@ 740

Last change on this file since 740 was 740, checked in by Silvan Scherrer, 12 years ago

Samba Server: update vendor to 3.6.0
File size: 10.4 KB
Line 
1/*
2 * Auditing VFS module for samba. Log selected file operations to syslog
3 * facility.
4 *
5 * Copyright (C) Tim Potter, 1999-2000
6 * Copyright (C) Alexander Bokovoy, 2002
7 * Copyright (C) John H Terpstra, 2003
8 * Copyright (C) Stefan (metze) Metzmacher, 2003
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 3 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 */
23
24
25#include "includes.h"
26#include "system/filesys.h"
27#include "system/syslog.h"
28#include "smbd/smbd.h"
29
30static int vfs_extd_audit_debug_level = DBGC_VFS;
31
32#undef DBGC_CLASS
33#define DBGC_CLASS vfs_extd_audit_debug_level
34
35static int audit_syslog_facility(vfs_handle_struct *handle)
36{
37 static const struct enum_list enum_log_facilities[] = {
38 { LOG_USER, "USER" },
39 { LOG_LOCAL0, "LOCAL0" },
40 { LOG_LOCAL1, "LOCAL1" },
41 { LOG_LOCAL2, "LOCAL2" },
42 { LOG_LOCAL3, "LOCAL3" },
43 { LOG_LOCAL4, "LOCAL4" },
44 { LOG_LOCAL5, "LOCAL5" },
45 { LOG_LOCAL6, "LOCAL6" },
46 { LOG_LOCAL7, "LOCAL7" }
47 };
48
49 int facility;
50
51 facility = lp_parm_enum(SNUM(handle->conn), "extd_audit", "facility", enum_log_facilities, LOG_USER);
52
53 return facility;
54}
55
56
57static int audit_syslog_priority(vfs_handle_struct *handle)
58{
59 static const struct enum_list enum_log_priorities[] = {
60 { LOG_EMERG, "EMERG" },
61 { LOG_ALERT, "ALERT" },
62 { LOG_CRIT, "CRIT" },
63 { LOG_ERR, "ERR" },
64 { LOG_WARNING, "WARNING" },
65 { LOG_NOTICE, "NOTICE" },
66 { LOG_INFO, "INFO" },
67 { LOG_DEBUG, "DEBUG" }
68 };
69
70 int priority;
71
72 priority = lp_parm_enum(SNUM(handle->conn), "extd_audit", "priority",
73 enum_log_priorities, LOG_NOTICE);
74 if (priority == -1) {
75 priority = LOG_WARNING;
76 }
77
78 return priority;
79}
80
81/* Implementation of vfs_ops. Pass everything on to the default
82 operation but log event first. */
83
84static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
85{
86 int result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
87
88 if (result < 0) {
89 return result;
90 }
91
92 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
93
94 if (lp_syslog() > 0) {
95 syslog(audit_syslog_priority(handle),
96 "connect to service %s by user %s\n",
97 svc, user);
98 }
99 DEBUG(10, ("Connected to service %s as user %s\n",
100 svc, user));
101
102 return 0;
103}
104
105static void audit_disconnect(vfs_handle_struct *handle)
106{
107 if (lp_syslog() > 0) {
108 syslog(audit_syslog_priority(handle), "disconnected\n");
109 }
110 DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
111 SMB_VFS_NEXT_DISCONNECT(handle);
112
113 return;
114}
115
116static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
117{
118 SMB_STRUCT_DIR *result;
119
120 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
121
122 if (lp_syslog() > 0) {
123 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
124 fname,
125 (result == NULL) ? "failed: " : "",
126 (result == NULL) ? strerror(errno) : "");
127 }
128 DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
129 fname,
130 (result == NULL) ? "failed: " : "",
131 (result == NULL) ? strerror(errno) : ""));
132
133 return result;
134}
135
136static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
137{
138 int result;
139
140 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
141
142 if (lp_syslog() > 0) {
143 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
144 path,
145 (result < 0) ? "failed: " : "",
146 (result < 0) ? strerror(errno) : "");
147 }
148 DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
149 path,
150 (result < 0) ? "failed: " : "",
151 (result < 0) ? strerror(errno) : ""));
152
153 return result;
154}
155
156static int audit_rmdir(vfs_handle_struct *handle, const char *path)
157{
158 int result;
159
160 result = SMB_VFS_NEXT_RMDIR(handle, path);
161
162 if (lp_syslog() > 0) {
163 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
164 path,
165 (result < 0) ? "failed: " : "",
166 (result < 0) ? strerror(errno) : "");
167 }
168 DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
169 path,
170 (result < 0) ? "failed: " : "",
171 (result < 0) ? strerror(errno) : ""));
172
173 return result;
174}
175
176static int audit_open(vfs_handle_struct *handle,
177 struct smb_filename *smb_fname, files_struct *fsp,
178 int flags, mode_t mode)
179{
180 int result;
181
182 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
183
184 if (lp_syslog() > 0) {
185 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
186 smb_fname->base_name, result,
187 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
188 (result < 0) ? "failed: " : "",
189 (result < 0) ? strerror(errno) : "");
190 }
191 DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
192 smb_fname_str_dbg(smb_fname),
193 (result < 0) ? "failed: " : "",
194 (result < 0) ? strerror(errno) : ""));
195
196 return result;
197}
198
199static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
200{
201 int result;
202
203 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
204
205 if (lp_syslog() > 0) {
206 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
207 fsp->fh->fd,
208 (result < 0) ? "failed: " : "",
209 (result < 0) ? strerror(errno) : "");
210 }
211 DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
212 fsp->fh->fd,
213 (result < 0) ? "failed: " : "",
214 (result < 0) ? strerror(errno) : ""));
215
216 return result;
217}
218
219static int audit_rename(vfs_handle_struct *handle,
220 const struct smb_filename *smb_fname_src,
221 const struct smb_filename *smb_fname_dst)
222{
223 int result;
224
225 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
226
227 if (lp_syslog() > 0) {
228 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
229 smb_fname_src->base_name,
230 smb_fname_dst->base_name,
231 (result < 0) ? "failed: " : "",
232 (result < 0) ? strerror(errno) : "");
233 }
234 DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
235 smb_fname_str_dbg(smb_fname_src),
236 smb_fname_str_dbg(smb_fname_dst),
237 (result < 0) ? "failed: " : "",
238 (result < 0) ? strerror(errno) : ""));
239
240 return result;
241}
242
243static int audit_unlink(vfs_handle_struct *handle,
244 const struct smb_filename *smb_fname)
245{
246 int result;
247
248 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
249
250 if (lp_syslog() > 0) {
251 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
252 smb_fname->base_name,
253 (result < 0) ? "failed: " : "",
254 (result < 0) ? strerror(errno) : "");
255 }
256 DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
257 smb_fname_str_dbg(smb_fname),
258 (result < 0) ? "failed: " : "",
259 (result < 0) ? strerror(errno) : ""));
260
261 return result;
262}
263
264static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
265{
266 int result;
267
268 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
269
270 if (lp_syslog() > 0) {
271 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
272 path, mode,
273 (result < 0) ? "failed: " : "",
274 (result < 0) ? strerror(errno) : "");
275 }
276 DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
277 path, (unsigned int)mode,
278 (result < 0) ? "failed: " : "",
279 (result < 0) ? strerror(errno) : ""));
280
281 return result;
282}
283
284static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
285{
286 int result;
287
288 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
289
290 if (lp_syslog() > 0) {
291 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
292 path, mode,
293 (result < 0) ? "failed: " : "",
294 (result < 0) ? strerror(errno) : "");
295 }
296 DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
297 path, (unsigned int)mode,
298 (result < 0) ? "failed: " : "",
299 (result < 0) ? strerror(errno) : ""));
300
301 return result;
302}
303
304static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
305{
306 int result;
307
308 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
309
310 if (lp_syslog() > 0) {
311 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
312 fsp->fsp_name->base_name, mode,
313 (result < 0) ? "failed: " : "",
314 (result < 0) ? strerror(errno) : "");
315 }
316 DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
317 fsp_str_dbg(fsp), (unsigned int)mode,
318 (result < 0) ? "failed: " : "",
319 (result < 0) ? strerror(errno) : ""));
320
321 return result;
322}
323
324static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
325{
326 int result;
327
328 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
329
330 if (lp_syslog() > 0) {
331 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
332 fsp->fsp_name->base_name, mode,
333 (result < 0) ? "failed: " : "",
334 (result < 0) ? strerror(errno) : "");
335 }
336 DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
337 fsp_str_dbg(fsp), (unsigned int)mode,
338 (result < 0) ? "failed: " : "",
339 (result < 0) ? strerror(errno) : ""));
340
341 return result;
342}
343
344static struct vfs_fn_pointers vfs_extd_audit_fns = {
345 .connect_fn = audit_connect,
346 .disconnect = audit_disconnect,
347 .opendir = audit_opendir,
348 .mkdir = audit_mkdir,
349 .rmdir = audit_rmdir,
350 .open_fn = audit_open,
351 .close_fn = audit_close,
352 .rename = audit_rename,
353 .unlink = audit_unlink,
354 .chmod = audit_chmod,
355 .fchmod = audit_fchmod,
356 .chmod_acl = audit_chmod_acl,
357 .fchmod_acl = audit_fchmod_acl,
358};
359
360NTSTATUS vfs_extd_audit_init(void)
361{
362 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
363 "extd_audit", &vfs_extd_audit_fns);
364
365 if (!NT_STATUS_IS_OK(ret))
366 return ret;
367
368 vfs_extd_audit_debug_level = debug_add_class("extd_audit");
369 if (vfs_extd_audit_debug_level == -1) {
370 vfs_extd_audit_debug_level = DBGC_VFS;
371 DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
372 } else {
373 DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));
374 }
375
376 return ret;
377}
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