2 * Auditing VFS module for samba. Log selected file operations to syslog
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
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.
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.
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/>.
27 static int vfs_extd_audit_debug_level = DBGC_VFS;
30 #define DBGC_CLASS vfs_extd_audit_debug_level
32 /* Function prototypes */
34 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user);
35 static void audit_disconnect(vfs_handle_struct *handle);
36 static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr);
37 static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode);
38 static int audit_rmdir(vfs_handle_struct *handle, const char *path);
39 static int audit_open(vfs_handle_struct *handle, struct smb_filename *smb_fname, files_struct *fsp, int flags, mode_t mode);
40 static int audit_close(vfs_handle_struct *handle, files_struct *fsp);
41 static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname);
42 static int audit_unlink(vfs_handle_struct *handle, const char *path);
43 static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode);
44 static int audit_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode);
45 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode);
46 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode);
50 static vfs_op_tuple audit_op_tuples[] = {
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},
57 /* Directory operations */
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},
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},
74 /* Finish VFS operations definition */
76 {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
80 static int audit_syslog_facility(vfs_handle_struct *handle)
82 static const struct enum_list enum_log_facilities[] = {
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" }
96 facility = lp_parm_enum(SNUM(handle->conn), "extd_audit", "facility", enum_log_facilities, LOG_USER);
102 static int audit_syslog_priority(vfs_handle_struct *handle)
104 static const struct enum_list enum_log_priorities[] = {
105 { LOG_EMERG, "EMERG" },
106 { LOG_ALERT, "ALERT" },
107 { LOG_CRIT, "CRIT" },
109 { LOG_WARNING, "WARNING" },
110 { LOG_NOTICE, "NOTICE" },
111 { LOG_INFO, "INFO" },
112 { LOG_DEBUG, "DEBUG" }
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;
126 /* Implementation of vfs_ops. Pass everything on to the default
127 operation but log event first. */
129 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
133 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
135 if (lp_syslog() > 0) {
136 syslog(audit_syslog_priority(handle),
137 "connect to service %s by user %s\n",
140 DEBUG(10, ("Connected to service %s as user %s\n",
143 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
148 static void audit_disconnect(vfs_handle_struct *handle)
150 if (lp_syslog() > 0) {
151 syslog(audit_syslog_priority(handle), "disconnected\n");
153 DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
154 SMB_VFS_NEXT_DISCONNECT(handle);
159 static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
161 SMB_STRUCT_DIR *result;
163 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
165 if (lp_syslog() > 0) {
166 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
168 (result == NULL) ? "failed: " : "",
169 (result == NULL) ? strerror(errno) : "");
171 DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
173 (result == NULL) ? "failed: " : "",
174 (result == NULL) ? strerror(errno) : ""));
179 static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
183 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
185 if (lp_syslog() > 0) {
186 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
188 (result < 0) ? "failed: " : "",
189 (result < 0) ? strerror(errno) : "");
191 DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
193 (result < 0) ? "failed: " : "",
194 (result < 0) ? strerror(errno) : ""));
199 static int audit_rmdir(vfs_handle_struct *handle, const char *path)
203 result = SMB_VFS_NEXT_RMDIR(handle, path);
205 if (lp_syslog() > 0) {
206 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
208 (result < 0) ? "failed: " : "",
209 (result < 0) ? strerror(errno) : "");
211 DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
213 (result < 0) ? "failed: " : "",
214 (result < 0) ? strerror(errno) : ""));
219 static int audit_open(vfs_handle_struct *handle,
220 struct smb_filename *smb_fname, files_struct *fsp,
221 int flags, mode_t mode)
225 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
227 if (lp_syslog() > 0) {
228 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
229 smb_fname_str_dbg(smb_fname), result,
230 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
231 (result < 0) ? "failed: " : "",
232 (result < 0) ? strerror(errno) : "");
234 DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
235 smb_fname_str_dbg(smb_fname),
236 (result < 0) ? "failed: " : "",
237 (result < 0) ? strerror(errno) : ""));
242 static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
246 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
248 if (lp_syslog() > 0) {
249 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
251 (result < 0) ? "failed: " : "",
252 (result < 0) ? strerror(errno) : "");
254 DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
256 (result < 0) ? "failed: " : "",
257 (result < 0) ? strerror(errno) : ""));
262 static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname)
266 result = SMB_VFS_NEXT_RENAME(handle, oldname, newname);
268 if (lp_syslog() > 0) {
269 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
271 (result < 0) ? "failed: " : "",
272 (result < 0) ? strerror(errno) : "");
274 DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
276 (result < 0) ? "failed: " : "",
277 (result < 0) ? strerror(errno) : ""));
282 static int audit_unlink(vfs_handle_struct *handle, const char *path)
286 result = SMB_VFS_NEXT_UNLINK(handle, path);
288 if (lp_syslog() > 0) {
289 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
291 (result < 0) ? "failed: " : "",
292 (result < 0) ? strerror(errno) : "");
294 DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
296 (result < 0) ? "failed: " : "",
297 (result < 0) ? strerror(errno) : ""));
302 static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
306 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
308 if (lp_syslog() > 0) {
309 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
311 (result < 0) ? "failed: " : "",
312 (result < 0) ? strerror(errno) : "");
314 DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
315 path, (unsigned int)mode,
316 (result < 0) ? "failed: " : "",
317 (result < 0) ? strerror(errno) : ""));
322 static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
326 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
328 if (lp_syslog() > 0) {
329 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
331 (result < 0) ? "failed: " : "",
332 (result < 0) ? strerror(errno) : "");
334 DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
335 path, (unsigned int)mode,
336 (result < 0) ? "failed: " : "",
337 (result < 0) ? strerror(errno) : ""));
342 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
346 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
348 if (lp_syslog() > 0) {
349 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
351 (result < 0) ? "failed: " : "",
352 (result < 0) ? strerror(errno) : "");
354 DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
355 fsp->fsp_name, (unsigned int)mode,
356 (result < 0) ? "failed: " : "",
357 (result < 0) ? strerror(errno) : ""));
362 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
366 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
368 if (lp_syslog() > 0) {
369 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
371 (result < 0) ? "failed: " : "",
372 (result < 0) ? strerror(errno) : "");
374 DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
375 fsp->fsp_name, (unsigned int)mode,
376 (result < 0) ? "failed: " : "",
377 (result < 0) ? strerror(errno) : ""));
382 NTSTATUS vfs_extd_audit_init(void);
383 NTSTATUS vfs_extd_audit_init(void)
385 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "extd_audit", audit_op_tuples);
387 if (!NT_STATUS_IS_OK(ret))
390 vfs_extd_audit_debug_level = debug_add_class("extd_audit");
391 if (vfs_extd_audit_debug_level == -1) {
392 vfs_extd_audit_debug_level = DBGC_VFS;
393 DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
395 DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));