source: branches/samba-3.3.x/source/modules/vfs_extd_audit.c

Last change on this file was 221, checked in by Herwig Bauernfeind, 16 years ago

Update Samba 3.3 to 3.3.1
File size: 11.6 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
32/* Function prototypes */
33
34static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user);
35static void audit_disconnect(vfs_handle_struct *handle);
36static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr);
37static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode);
38static int audit_rmdir(vfs_handle_struct *handle, const char *path);
39static int audit_open(vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
40static int audit_close(vfs_handle_struct *handle, files_struct *fsp);
41static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname);
42static int audit_unlink(vfs_handle_struct *handle, const char *path);
43static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode);
44static int audit_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode);
45static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode);
46static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode);
47
48/* VFS operations */
49
50static vfs_op_tuple audit_op_tuples[] = {
51
52 /* Disk operations */
53
54 {SMB_VFS_OP(audit_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
55 {SMB_VFS_OP(audit_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
56
57 /* Directory operations */
58
59 {SMB_VFS_OP(audit_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
60 {SMB_VFS_OP(audit_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
61 {SMB_VFS_OP(audit_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
62
63 /* File operations */
64
65 {SMB_VFS_OP(audit_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
66 {SMB_VFS_OP(audit_close), SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
67 {SMB_VFS_OP(audit_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
68 {SMB_VFS_OP(audit_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
69 {SMB_VFS_OP(audit_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
70 {SMB_VFS_OP(audit_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
71 {SMB_VFS_OP(audit_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
72 {SMB_VFS_OP(audit_fchmod_acl), SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
73
74 /* Finish VFS operations definition */
75
76 {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
77};
78
79
80static int audit_syslog_facility(vfs_handle_struct *handle)
81{
82 static const struct enum_list enum_log_facilities[] = {
83 { LOG_USER, "USER" },
84 { LOG_LOCAL0, "LOCAL0" },
85 { LOG_LOCAL1, "LOCAL1" },
86 { LOG_LOCAL2, "LOCAL2" },
87 { LOG_LOCAL3, "LOCAL3" },
88 { LOG_LOCAL4, "LOCAL4" },
89 { LOG_LOCAL5, "LOCAL5" },
90 { LOG_LOCAL6, "LOCAL6" },
91 { LOG_LOCAL7, "LOCAL7" }
92 };
93
94 int facility;
95
96 facility = lp_parm_enum(SNUM(handle->conn), "extd_audit", "facility", enum_log_facilities, LOG_USER);
97
98 return facility;
99}
100
101
102static int audit_syslog_priority(vfs_handle_struct *handle)
103{
104 static const struct enum_list enum_log_priorities[] = {
105 { LOG_EMERG, "EMERG" },
106 { LOG_ALERT, "ALERT" },
107 { LOG_CRIT, "CRIT" },
108 { LOG_ERR, "ERR" },
109 { LOG_WARNING, "WARNING" },
110 { LOG_NOTICE, "NOTICE" },
111 { LOG_INFO, "INFO" },
112 { LOG_DEBUG, "DEBUG" }
113 };
114
115 int priority;
116
117 priority = lp_parm_enum(SNUM(handle->conn), "extd_audit", "priority",
118 enum_log_priorities, LOG_NOTICE);
119 if (priority == -1) {
120 priority = LOG_WARNING;
121 }
122
123 return priority;
124}
125
126/* Implementation of vfs_ops. Pass everything on to the default
127 operation but log event first. */
128
129static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
130{
131 int result;
132
133 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
134
135 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
136 svc, user);
137 DEBUG(10, ("Connected to service %s as user %s\n",
138 svc, user));
139
140 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
141
142 return result;
143}
144
145static void audit_disconnect(vfs_handle_struct *handle)
146{
147 syslog(audit_syslog_priority(handle), "disconnected\n");
148 DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
149 SMB_VFS_NEXT_DISCONNECT(handle);
150
151 return;
152}
153
154static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
155{
156 SMB_STRUCT_DIR *result;
157
158 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
159
160 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
161 fname,
162 (result == NULL) ? "failed: " : "",
163 (result == NULL) ? strerror(errno) : "");
164 DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
165 fname,
166 (result == NULL) ? "failed: " : "",
167 (result == NULL) ? strerror(errno) : ""));
168
169 return result;
170}
171
172static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
173{
174 int result;
175
176 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
177
178 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
179 path,
180 (result < 0) ? "failed: " : "",
181 (result < 0) ? strerror(errno) : "");
182 DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
183 path,
184 (result < 0) ? "failed: " : "",
185 (result < 0) ? strerror(errno) : ""));
186
187 return result;
188}
189
190static int audit_rmdir(vfs_handle_struct *handle, const char *path)
191{
192 int result;
193
194 result = SMB_VFS_NEXT_RMDIR(handle, path);
195
196 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
197 path,
198 (result < 0) ? "failed: " : "",
199 (result < 0) ? strerror(errno) : "");
200 DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
201 path,
202 (result < 0) ? "failed: " : "",
203 (result < 0) ? strerror(errno) : ""));
204
205 return result;
206}
207
208static int audit_open(vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode)
209{
210 int result;
211
212 result = SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
213
214 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
215 fname, result,
216 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
217 (result < 0) ? "failed: " : "",
218 (result < 0) ? strerror(errno) : "");
219 DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
220 fname,
221 (result < 0) ? "failed: " : "",
222 (result < 0) ? strerror(errno) : ""));
223
224 return result;
225}
226
227static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
228{
229 int result;
230
231 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
232
233 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
234 fsp->fh->fd,
235 (result < 0) ? "failed: " : "",
236 (result < 0) ? strerror(errno) : "");
237 DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
238 fsp->fh->fd,
239 (result < 0) ? "failed: " : "",
240 (result < 0) ? strerror(errno) : ""));
241
242 return result;
243}
244
245static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname)
246{
247 int result;
248
249 result = SMB_VFS_NEXT_RENAME(handle, oldname, newname);
250
251 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
252 oldname, newname,
253 (result < 0) ? "failed: " : "",
254 (result < 0) ? strerror(errno) : "");
255 DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
256 oldname, newname,
257 (result < 0) ? "failed: " : "",
258 (result < 0) ? strerror(errno) : ""));
259
260 return result;
261}
262
263static int audit_unlink(vfs_handle_struct *handle, const char *path)
264{
265 int result;
266
267 result = SMB_VFS_NEXT_UNLINK(handle, path);
268
269 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
270 path,
271 (result < 0) ? "failed: " : "",
272 (result < 0) ? strerror(errno) : "");
273 DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
274 path,
275 (result < 0) ? "failed: " : "",
276 (result < 0) ? strerror(errno) : ""));
277
278 return result;
279}
280
281static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
282{
283 int result;
284
285 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
286
287 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
288 path, mode,
289 (result < 0) ? "failed: " : "",
290 (result < 0) ? strerror(errno) : "");
291 DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
292 path, (unsigned int)mode,
293 (result < 0) ? "failed: " : "",
294 (result < 0) ? strerror(errno) : ""));
295
296 return result;
297}
298
299static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
300{
301 int result;
302
303 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
304
305 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
306 path, mode,
307 (result < 0) ? "failed: " : "",
308 (result < 0) ? strerror(errno) : "");
309 DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
310 path, (unsigned int)mode,
311 (result < 0) ? "failed: " : "",
312 (result < 0) ? strerror(errno) : ""));
313
314 return result;
315}
316
317static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
318{
319 int result;
320
321 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
322
323 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
324 fsp->fsp_name, mode,
325 (result < 0) ? "failed: " : "",
326 (result < 0) ? strerror(errno) : "");
327 DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
328 fsp->fsp_name, (unsigned int)mode,
329 (result < 0) ? "failed: " : "",
330 (result < 0) ? strerror(errno) : ""));
331
332 return result;
333}
334
335static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
336{
337 int result;
338
339 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
340
341 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
342 fsp->fsp_name, mode,
343 (result < 0) ? "failed: " : "",
344 (result < 0) ? strerror(errno) : "");
345 DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
346 fsp->fsp_name, (unsigned int)mode,
347 (result < 0) ? "failed: " : "",
348 (result < 0) ? strerror(errno) : ""));
349
350 return result;
351}
352
353NTSTATUS vfs_extd_audit_init(void);
354NTSTATUS vfs_extd_audit_init(void)
355{
356 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "extd_audit", audit_op_tuples);
357
358 if (!NT_STATUS_IS_OK(ret))
359 return ret;
360
361 vfs_extd_audit_debug_level = debug_add_class("extd_audit");
362 if (vfs_extd_audit_debug_level == -1) {
363 vfs_extd_audit_debug_level = DBGC_VFS;
364 DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
365 } else {
366 DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));
367 }
368
369 return ret;
370}
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