source: branches/samba-3.5.x/source3/modules/vfs_extd_audit.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 10.0 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
27static int vfs_extd_audit_debug_level = DBGC_VFS;
28
29#undef DBGC_CLASS
30#define DBGC_CLASS vfs_extd_audit_debug_level
31
32static int audit_syslog_facility(vfs_handle_struct *handle)
33{
34 static const struct enum_list enum_log_facilities[] = {
35 { LOG_USER, "USER" },
36 { LOG_LOCAL0, "LOCAL0" },
37 { LOG_LOCAL1, "LOCAL1" },
38 { LOG_LOCAL2, "LOCAL2" },
39 { LOG_LOCAL3, "LOCAL3" },
40 { LOG_LOCAL4, "LOCAL4" },
41 { LOG_LOCAL5, "LOCAL5" },
42 { LOG_LOCAL6, "LOCAL6" },
43 { LOG_LOCAL7, "LOCAL7" }
44 };
45
46 int facility;
47
48 facility = lp_parm_enum(SNUM(handle->conn), "extd_audit", "facility", enum_log_facilities, LOG_USER);
49
50 return facility;
51}
52
53
54static int audit_syslog_priority(vfs_handle_struct *handle)
55{
56 static const struct enum_list enum_log_priorities[] = {
57 { LOG_EMERG, "EMERG" },
58 { LOG_ALERT, "ALERT" },
59 { LOG_CRIT, "CRIT" },
60 { LOG_ERR, "ERR" },
61 { LOG_WARNING, "WARNING" },
62 { LOG_NOTICE, "NOTICE" },
63 { LOG_INFO, "INFO" },
64 { LOG_DEBUG, "DEBUG" }
65 };
66
67 int priority;
68
69 priority = lp_parm_enum(SNUM(handle->conn), "extd_audit", "priority",
70 enum_log_priorities, LOG_NOTICE);
71 if (priority == -1) {
72 priority = LOG_WARNING;
73 }
74
75 return priority;
76}
77
78/* Implementation of vfs_ops. Pass everything on to the default
79 operation but log event first. */
80
81static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
82{
83 int result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
84
85 if (result < 0) {
86 return result;
87 }
88
89 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
90
91 if (lp_syslog() > 0) {
92 syslog(audit_syslog_priority(handle),
93 "connect to service %s by user %s\n",
94 svc, user);
95 }
96 DEBUG(10, ("Connected to service %s as user %s\n",
97 svc, user));
98
99 return 0;
100}
101
102static void audit_disconnect(vfs_handle_struct *handle)
103{
104 if (lp_syslog() > 0) {
105 syslog(audit_syslog_priority(handle), "disconnected\n");
106 }
107 DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
108 SMB_VFS_NEXT_DISCONNECT(handle);
109
110 return;
111}
112
113static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
114{
115 SMB_STRUCT_DIR *result;
116
117 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
118
119 if (lp_syslog() > 0) {
120 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
121 fname,
122 (result == NULL) ? "failed: " : "",
123 (result == NULL) ? strerror(errno) : "");
124 }
125 DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
126 fname,
127 (result == NULL) ? "failed: " : "",
128 (result == NULL) ? strerror(errno) : ""));
129
130 return result;
131}
132
133static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
134{
135 int result;
136
137 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
138
139 if (lp_syslog() > 0) {
140 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
141 path,
142 (result < 0) ? "failed: " : "",
143 (result < 0) ? strerror(errno) : "");
144 }
145 DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
146 path,
147 (result < 0) ? "failed: " : "",
148 (result < 0) ? strerror(errno) : ""));
149
150 return result;
151}
152
153static int audit_rmdir(vfs_handle_struct *handle, const char *path)
154{
155 int result;
156
157 result = SMB_VFS_NEXT_RMDIR(handle, path);
158
159 if (lp_syslog() > 0) {
160 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
161 path,
162 (result < 0) ? "failed: " : "",
163 (result < 0) ? strerror(errno) : "");
164 }
165 DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
166 path,
167 (result < 0) ? "failed: " : "",
168 (result < 0) ? strerror(errno) : ""));
169
170 return result;
171}
172
173static int audit_open(vfs_handle_struct *handle,
174 struct smb_filename *smb_fname, files_struct *fsp,
175 int flags, mode_t mode)
176{
177 int result;
178
179 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
180
181 if (lp_syslog() > 0) {
182 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
183 smb_fname->base_name, result,
184 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
185 (result < 0) ? "failed: " : "",
186 (result < 0) ? strerror(errno) : "");
187 }
188 DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
189 smb_fname_str_dbg(smb_fname),
190 (result < 0) ? "failed: " : "",
191 (result < 0) ? strerror(errno) : ""));
192
193 return result;
194}
195
196static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
197{
198 int result;
199
200 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
201
202 if (lp_syslog() > 0) {
203 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
204 fsp->fh->fd,
205 (result < 0) ? "failed: " : "",
206 (result < 0) ? strerror(errno) : "");
207 }
208 DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
209 fsp->fh->fd,
210 (result < 0) ? "failed: " : "",
211 (result < 0) ? strerror(errno) : ""));
212
213 return result;
214}
215
216static int audit_rename(vfs_handle_struct *handle,
217 const struct smb_filename *smb_fname_src,
218 const struct smb_filename *smb_fname_dst)
219{
220 int result;
221
222 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
223
224 if (lp_syslog() > 0) {
225 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
226 smb_fname_src->base_name,
227 smb_fname_dst->base_name,
228 (result < 0) ? "failed: " : "",
229 (result < 0) ? strerror(errno) : "");
230 }
231 DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
232 smb_fname_str_dbg(smb_fname_src),
233 smb_fname_str_dbg(smb_fname_dst),
234 (result < 0) ? "failed: " : "",
235 (result < 0) ? strerror(errno) : ""));
236
237 return result;
238}
239
240static int audit_unlink(vfs_handle_struct *handle,
241 const struct smb_filename *smb_fname)
242{
243 int result;
244
245 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
246
247 if (lp_syslog() > 0) {
248 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
249 smb_fname->base_name,
250 (result < 0) ? "failed: " : "",
251 (result < 0) ? strerror(errno) : "");
252 }
253 DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
254 smb_fname_str_dbg(smb_fname),
255 (result < 0) ? "failed: " : "",
256 (result < 0) ? strerror(errno) : ""));
257
258 return result;
259}
260
261static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
262{
263 int result;
264
265 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
266
267 if (lp_syslog() > 0) {
268 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
269 path, mode,
270 (result < 0) ? "failed: " : "",
271 (result < 0) ? strerror(errno) : "");
272 }
273 DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
274 path, (unsigned int)mode,
275 (result < 0) ? "failed: " : "",
276 (result < 0) ? strerror(errno) : ""));
277
278 return result;
279}
280
281static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
282{
283 int result;
284
285 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
286
287 if (lp_syslog() > 0) {
288 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
289 path, mode,
290 (result < 0) ? "failed: " : "",
291 (result < 0) ? strerror(errno) : "");
292 }
293 DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
294 path, (unsigned int)mode,
295 (result < 0) ? "failed: " : "",
296 (result < 0) ? strerror(errno) : ""));
297
298 return result;
299}
300
301static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
302{
303 int result;
304
305 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
306
307 if (lp_syslog() > 0) {
308 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
309 fsp->fsp_name->base_name, mode,
310 (result < 0) ? "failed: " : "",
311 (result < 0) ? strerror(errno) : "");
312 }
313 DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
314 fsp_str_dbg(fsp), (unsigned int)mode,
315 (result < 0) ? "failed: " : "",
316 (result < 0) ? strerror(errno) : ""));
317
318 return result;
319}
320
321static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
322{
323 int result;
324
325 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
326
327 if (lp_syslog() > 0) {
328 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
329 fsp->fsp_name->base_name, mode,
330 (result < 0) ? "failed: " : "",
331 (result < 0) ? strerror(errno) : "");
332 }
333 DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
334 fsp_str_dbg(fsp), (unsigned int)mode,
335 (result < 0) ? "failed: " : "",
336 (result < 0) ? strerror(errno) : ""));
337
338 return result;
339}
340
341static struct vfs_fn_pointers vfs_extd_audit_fns = {
342 .connect_fn = audit_connect,
343 .disconnect = audit_disconnect,
344 .opendir = audit_opendir,
345 .mkdir = audit_mkdir,
346 .rmdir = audit_rmdir,
347 .open = audit_open,
348 .close_fn = audit_close,
349 .rename = audit_rename,
350 .unlink = audit_unlink,
351 .chmod = audit_chmod,
352 .fchmod = audit_fchmod,
353 .chmod_acl = audit_chmod_acl,
354 .fchmod_acl = audit_fchmod_acl,
355};
356
357NTSTATUS vfs_extd_audit_init(void)
358{
359 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
360 "extd_audit", &vfs_extd_audit_fns);
361
362 if (!NT_STATUS_IS_OK(ret))
363 return ret;
364
365 vfs_extd_audit_debug_level = debug_add_class("extd_audit");
366 if (vfs_extd_audit_debug_level == -1) {
367 vfs_extd_audit_debug_level = DBGC_VFS;
368 DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
369 } else {
370 DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));
371 }
372
373 return ret;
374}
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