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 static int audit_syslog_facility(vfs_handle_struct *handle)
34 static const struct enum_list enum_log_facilities[] = {
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" }
48 facility = lp_parm_enum(SNUM(handle->conn), "extd_audit", "facility", enum_log_facilities, LOG_USER);
54 static int audit_syslog_priority(vfs_handle_struct *handle)
56 static const struct enum_list enum_log_priorities[] = {
57 { LOG_EMERG, "EMERG" },
58 { LOG_ALERT, "ALERT" },
61 { LOG_WARNING, "WARNING" },
62 { LOG_NOTICE, "NOTICE" },
64 { LOG_DEBUG, "DEBUG" }
69 priority = lp_parm_enum(SNUM(handle->conn), "extd_audit", "priority",
70 enum_log_priorities, LOG_NOTICE);
72 priority = LOG_WARNING;
78 /* Implementation of vfs_ops. Pass everything on to the default
79 operation but log event first. */
81 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
85 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
87 if (lp_syslog() > 0) {
88 syslog(audit_syslog_priority(handle),
89 "connect to service %s by user %s\n",
92 DEBUG(10, ("Connected to service %s as user %s\n",
95 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
100 static void audit_disconnect(vfs_handle_struct *handle)
102 if (lp_syslog() > 0) {
103 syslog(audit_syslog_priority(handle), "disconnected\n");
105 DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
106 SMB_VFS_NEXT_DISCONNECT(handle);
111 static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
113 SMB_STRUCT_DIR *result;
115 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
117 if (lp_syslog() > 0) {
118 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
120 (result == NULL) ? "failed: " : "",
121 (result == NULL) ? strerror(errno) : "");
123 DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
125 (result == NULL) ? "failed: " : "",
126 (result == NULL) ? strerror(errno) : ""));
131 static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
135 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
137 if (lp_syslog() > 0) {
138 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
140 (result < 0) ? "failed: " : "",
141 (result < 0) ? strerror(errno) : "");
143 DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
145 (result < 0) ? "failed: " : "",
146 (result < 0) ? strerror(errno) : ""));
151 static int audit_rmdir(vfs_handle_struct *handle, const char *path)
155 result = SMB_VFS_NEXT_RMDIR(handle, path);
157 if (lp_syslog() > 0) {
158 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
160 (result < 0) ? "failed: " : "",
161 (result < 0) ? strerror(errno) : "");
163 DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
165 (result < 0) ? "failed: " : "",
166 (result < 0) ? strerror(errno) : ""));
171 static int audit_open(vfs_handle_struct *handle,
172 struct smb_filename *smb_fname, files_struct *fsp,
173 int flags, mode_t mode)
177 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
179 if (lp_syslog() > 0) {
180 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
181 smb_fname_str_dbg(smb_fname), result,
182 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
183 (result < 0) ? "failed: " : "",
184 (result < 0) ? strerror(errno) : "");
186 DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
187 smb_fname_str_dbg(smb_fname),
188 (result < 0) ? "failed: " : "",
189 (result < 0) ? strerror(errno) : ""));
194 static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
198 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
200 if (lp_syslog() > 0) {
201 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
203 (result < 0) ? "failed: " : "",
204 (result < 0) ? strerror(errno) : "");
206 DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
208 (result < 0) ? "failed: " : "",
209 (result < 0) ? strerror(errno) : ""));
214 static int audit_rename(vfs_handle_struct *handle,
215 const struct smb_filename *smb_fname_src,
216 const struct smb_filename *smb_fname_dst)
220 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
222 if (lp_syslog() > 0) {
223 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
224 smb_fname_str_dbg(smb_fname_src),
225 smb_fname_str_dbg(smb_fname_dst),
226 (result < 0) ? "failed: " : "",
227 (result < 0) ? strerror(errno) : "");
229 DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
230 smb_fname_str_dbg(smb_fname_src),
231 smb_fname_str_dbg(smb_fname_dst),
232 (result < 0) ? "failed: " : "",
233 (result < 0) ? strerror(errno) : ""));
238 static int audit_unlink(vfs_handle_struct *handle, const char *path)
242 result = SMB_VFS_NEXT_UNLINK(handle, path);
244 if (lp_syslog() > 0) {
245 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
247 (result < 0) ? "failed: " : "",
248 (result < 0) ? strerror(errno) : "");
250 DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
252 (result < 0) ? "failed: " : "",
253 (result < 0) ? strerror(errno) : ""));
258 static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
262 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
264 if (lp_syslog() > 0) {
265 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
267 (result < 0) ? "failed: " : "",
268 (result < 0) ? strerror(errno) : "");
270 DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
271 path, (unsigned int)mode,
272 (result < 0) ? "failed: " : "",
273 (result < 0) ? strerror(errno) : ""));
278 static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
282 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
284 if (lp_syslog() > 0) {
285 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
287 (result < 0) ? "failed: " : "",
288 (result < 0) ? strerror(errno) : "");
290 DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
291 path, (unsigned int)mode,
292 (result < 0) ? "failed: " : "",
293 (result < 0) ? strerror(errno) : ""));
298 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
302 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
304 if (lp_syslog() > 0) {
305 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
307 (result < 0) ? "failed: " : "",
308 (result < 0) ? strerror(errno) : "");
310 DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
311 fsp->fsp_name, (unsigned int)mode,
312 (result < 0) ? "failed: " : "",
313 (result < 0) ? strerror(errno) : ""));
318 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
322 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
324 if (lp_syslog() > 0) {
325 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
327 (result < 0) ? "failed: " : "",
328 (result < 0) ? strerror(errno) : "");
330 DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
331 fsp->fsp_name, (unsigned int)mode,
332 (result < 0) ? "failed: " : "",
333 (result < 0) ? strerror(errno) : ""));
339 static vfs_op_tuple audit_op_tuples[] = {
341 /* Disk operations */
343 {SMB_VFS_OP(audit_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
344 {SMB_VFS_OP(audit_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
346 /* Directory operations */
348 {SMB_VFS_OP(audit_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
349 {SMB_VFS_OP(audit_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
350 {SMB_VFS_OP(audit_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
352 /* File operations */
354 {SMB_VFS_OP(audit_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
355 {SMB_VFS_OP(audit_close), SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
356 {SMB_VFS_OP(audit_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
357 {SMB_VFS_OP(audit_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
358 {SMB_VFS_OP(audit_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
359 {SMB_VFS_OP(audit_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
360 {SMB_VFS_OP(audit_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
361 {SMB_VFS_OP(audit_fchmod_acl), SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
363 /* Finish VFS operations definition */
365 {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
368 NTSTATUS vfs_extd_audit_init(void)
370 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "extd_audit", audit_op_tuples);
372 if (!NT_STATUS_IS_OK(ret))
375 vfs_extd_audit_debug_level = debug_add_class("extd_audit");
376 if (vfs_extd_audit_debug_level == -1) {
377 vfs_extd_audit_debug_level = DBGC_VFS;
378 DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
380 DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));