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/>.
26 #include "system/filesys.h"
27 #include "system/syslog.h"
28 #include "smbd/smbd.h"
29 #include "lib/param/loadparm.h"
31 static int vfs_extd_audit_debug_level = DBGC_VFS;
34 #define DBGC_CLASS vfs_extd_audit_debug_level
36 static int audit_syslog_facility(vfs_handle_struct *handle)
38 static const struct enum_list enum_log_facilities[] = {
40 { LOG_LOCAL0, "LOCAL0" },
41 { LOG_LOCAL1, "LOCAL1" },
42 { LOG_LOCAL2, "LOCAL2" },
43 { LOG_LOCAL3, "LOCAL3" },
44 { LOG_LOCAL4, "LOCAL4" },
45 { LOG_LOCAL5, "LOCAL5" },
46 { LOG_LOCAL6, "LOCAL6" },
47 { LOG_LOCAL7, "LOCAL7" },
53 facility = lp_parm_enum(SNUM(handle->conn), "extd_audit", "facility", enum_log_facilities, LOG_USER);
59 static int audit_syslog_priority(vfs_handle_struct *handle)
61 static const struct enum_list enum_log_priorities[] = {
62 { LOG_EMERG, "EMERG" },
63 { LOG_ALERT, "ALERT" },
66 { LOG_WARNING, "WARNING" },
67 { LOG_NOTICE, "NOTICE" },
69 { LOG_DEBUG, "DEBUG" },
75 priority = lp_parm_enum(SNUM(handle->conn), "extd_audit", "priority",
76 enum_log_priorities, LOG_NOTICE);
78 priority = LOG_WARNING;
84 /* Implementation of vfs_ops. Pass everything on to the default
85 operation but log event first. */
87 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
89 int result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
95 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
97 if (lp_syslog() > 0) {
98 syslog(audit_syslog_priority(handle),
99 "connect to service %s by user %s\n",
102 DEBUG(10, ("Connected to service %s as user %s\n",
108 static void audit_disconnect(vfs_handle_struct *handle)
110 if (lp_syslog() > 0) {
111 syslog(audit_syslog_priority(handle), "disconnected\n");
113 DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
114 SMB_VFS_NEXT_DISCONNECT(handle);
119 static DIR *audit_opendir(vfs_handle_struct *handle,
120 const struct smb_filename *smb_fname,
126 result = SMB_VFS_NEXT_OPENDIR(handle, smb_fname, mask, attr);
128 if (lp_syslog() > 0) {
129 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
130 smb_fname->base_name,
131 (result == NULL) ? "failed: " : "",
132 (result == NULL) ? strerror(errno) : "");
134 DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
135 smb_fname->base_name,
136 (result == NULL) ? "failed: " : "",
137 (result == NULL) ? strerror(errno) : ""));
142 static int audit_mkdir(vfs_handle_struct *handle,
143 const struct smb_filename *smb_fname,
148 result = SMB_VFS_NEXT_MKDIR(handle, smb_fname, mode);
150 if (lp_syslog() > 0) {
151 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
152 smb_fname->base_name,
153 (result < 0) ? "failed: " : "",
154 (result < 0) ? strerror(errno) : "");
156 DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
157 smb_fname->base_name,
158 (result < 0) ? "failed: " : "",
159 (result < 0) ? strerror(errno) : ""));
164 static int audit_rmdir(vfs_handle_struct *handle,
165 const struct smb_filename *smb_fname)
169 result = SMB_VFS_NEXT_RMDIR(handle, smb_fname);
171 if (lp_syslog() > 0) {
172 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
173 smb_fname->base_name,
174 (result < 0) ? "failed: " : "",
175 (result < 0) ? strerror(errno) : "");
177 DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
178 smb_fname->base_name,
179 (result < 0) ? "failed: " : "",
180 (result < 0) ? strerror(errno) : ""));
185 static int audit_open(vfs_handle_struct *handle,
186 struct smb_filename *smb_fname, files_struct *fsp,
187 int flags, mode_t mode)
191 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
193 if (lp_syslog() > 0) {
194 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
195 smb_fname->base_name, result,
196 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
197 (result < 0) ? "failed: " : "",
198 (result < 0) ? strerror(errno) : "");
200 DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
201 smb_fname_str_dbg(smb_fname),
202 (result < 0) ? "failed: " : "",
203 (result < 0) ? strerror(errno) : ""));
208 static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
212 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
214 if (lp_syslog() > 0) {
215 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
217 (result < 0) ? "failed: " : "",
218 (result < 0) ? strerror(errno) : "");
220 DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
222 (result < 0) ? "failed: " : "",
223 (result < 0) ? strerror(errno) : ""));
228 static int audit_rename(vfs_handle_struct *handle,
229 const struct smb_filename *smb_fname_src,
230 const struct smb_filename *smb_fname_dst)
234 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
236 if (lp_syslog() > 0) {
237 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
238 smb_fname_src->base_name,
239 smb_fname_dst->base_name,
240 (result < 0) ? "failed: " : "",
241 (result < 0) ? strerror(errno) : "");
243 DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
244 smb_fname_str_dbg(smb_fname_src),
245 smb_fname_str_dbg(smb_fname_dst),
246 (result < 0) ? "failed: " : "",
247 (result < 0) ? strerror(errno) : ""));
252 static int audit_unlink(vfs_handle_struct *handle,
253 const struct smb_filename *smb_fname)
257 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
259 if (lp_syslog() > 0) {
260 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
261 smb_fname->base_name,
262 (result < 0) ? "failed: " : "",
263 (result < 0) ? strerror(errno) : "");
265 DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
266 smb_fname_str_dbg(smb_fname),
267 (result < 0) ? "failed: " : "",
268 (result < 0) ? strerror(errno) : ""));
273 static int audit_chmod(vfs_handle_struct *handle,
274 const struct smb_filename *smb_fname,
279 result = SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
281 if (lp_syslog() > 0) {
282 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
283 smb_fname->base_name, mode,
284 (result < 0) ? "failed: " : "",
285 (result < 0) ? strerror(errno) : "");
287 DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
288 smb_fname->base_name, (unsigned int)mode,
289 (result < 0) ? "failed: " : "",
290 (result < 0) ? strerror(errno) : ""));
295 static int audit_chmod_acl(vfs_handle_struct *handle,
296 const struct smb_filename *smb_fname,
301 result = SMB_VFS_NEXT_CHMOD_ACL(handle, smb_fname, mode);
303 if (lp_syslog() > 0) {
304 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
305 smb_fname->base_name, mode,
306 (result < 0) ? "failed: " : "",
307 (result < 0) ? strerror(errno) : "");
309 DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
310 smb_fname->base_name, (unsigned int)mode,
311 (result < 0) ? "failed: " : "",
312 (result < 0) ? strerror(errno) : ""));
317 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
321 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
323 if (lp_syslog() > 0) {
324 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
325 fsp->fsp_name->base_name, mode,
326 (result < 0) ? "failed: " : "",
327 (result < 0) ? strerror(errno) : "");
329 DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
330 fsp_str_dbg(fsp), (unsigned int)mode,
331 (result < 0) ? "failed: " : "",
332 (result < 0) ? strerror(errno) : ""));
337 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
341 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
343 if (lp_syslog() > 0) {
344 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
345 fsp->fsp_name->base_name, mode,
346 (result < 0) ? "failed: " : "",
347 (result < 0) ? strerror(errno) : "");
349 DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
350 fsp_str_dbg(fsp), (unsigned int)mode,
351 (result < 0) ? "failed: " : "",
352 (result < 0) ? strerror(errno) : ""));
357 static struct vfs_fn_pointers vfs_extd_audit_fns = {
358 .connect_fn = audit_connect,
359 .disconnect_fn = audit_disconnect,
360 .opendir_fn = audit_opendir,
361 .mkdir_fn = audit_mkdir,
362 .rmdir_fn = audit_rmdir,
363 .open_fn = audit_open,
364 .close_fn = audit_close,
365 .rename_fn = audit_rename,
366 .unlink_fn = audit_unlink,
367 .chmod_fn = audit_chmod,
368 .fchmod_fn = audit_fchmod,
369 .chmod_acl_fn = audit_chmod_acl,
370 .fchmod_acl_fn = audit_fchmod_acl,
374 NTSTATUS vfs_extd_audit_init(void)
376 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION,
377 "extd_audit", &vfs_extd_audit_fns);
379 if (!NT_STATUS_IS_OK(ret))
382 vfs_extd_audit_debug_level = debug_add_class("extd_audit");
383 if (vfs_extd_audit_debug_level == -1) {
384 vfs_extd_audit_debug_level = DBGC_VFS;
385 DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
387 DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));