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 2 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, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 static int vfs_extd_audit_debug_level = DBGC_VFS;
31 #define DBGC_CLASS vfs_extd_audit_debug_level
33 /* Function prototypes */
35 static int audit_connect(vfs_handle_struct *handle, connection_struct *conn, const char *svc, const char *user);
36 static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn);
37 static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname);
38 static int audit_mkdir(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode);
39 static int audit_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path);
40 static int audit_open(vfs_handle_struct *handle, connection_struct *conn, const char *fname, int flags, mode_t mode);
41 static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd);
42 static int audit_rename(vfs_handle_struct *handle, connection_struct *conn, const char *old, const char *new);
43 static int audit_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path);
44 static int audit_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode);
45 static int audit_chmod_acl(vfs_handle_struct *handle, connection_struct *conn, const char *name, mode_t mode);
46 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode);
47 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode);
51 static vfs_op_tuple audit_op_tuples[] = {
55 {SMB_VFS_OP(audit_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
56 {SMB_VFS_OP(audit_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
58 /* Directory operations */
60 {SMB_VFS_OP(audit_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
61 {SMB_VFS_OP(audit_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
62 {SMB_VFS_OP(audit_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
66 {SMB_VFS_OP(audit_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
67 {SMB_VFS_OP(audit_close), SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
68 {SMB_VFS_OP(audit_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
69 {SMB_VFS_OP(audit_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
70 {SMB_VFS_OP(audit_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
71 {SMB_VFS_OP(audit_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
72 {SMB_VFS_OP(audit_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
73 {SMB_VFS_OP(audit_fchmod_acl), SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
75 /* Finish VFS operations definition */
77 {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
81 static int audit_syslog_facility(vfs_handle_struct *handle)
83 /* fix me: let this be configurable by:
84 * lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"extd_audit"),"syslog facility",
85 * audit_enum_facility,LOG_USER);
91 static int audit_syslog_priority(vfs_handle_struct *handle)
93 /* fix me: let this be configurable by:
94 * lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"extd_audit"),"syslog priority",
95 * audit_enum_priority,LOG_NOTICE);
100 /* Implementation of vfs_ops. Pass everything on to the default
101 operation but log event first. */
103 static int audit_connect(vfs_handle_struct *handle, connection_struct *conn, const char *svc, const char *user)
107 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
109 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
111 DEBUG(10, ("Connected to service %s as user %s\n",
114 result = SMB_VFS_NEXT_CONNECT(handle, conn, svc, user);
119 static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn)
121 syslog(audit_syslog_priority(handle), "disconnected\n");
122 DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
123 SMB_VFS_NEXT_DISCONNECT(handle, conn);
128 static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname)
132 result = SMB_VFS_NEXT_OPENDIR(handle, conn, fname);
134 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
136 (result == NULL) ? "failed: " : "",
137 (result == NULL) ? strerror(errno) : "");
138 DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
140 (result == NULL) ? "failed: " : "",
141 (result == NULL) ? strerror(errno) : ""));
146 static int audit_mkdir(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
150 result = SMB_VFS_NEXT_MKDIR(handle, conn, path, mode);
152 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
154 (result < 0) ? "failed: " : "",
155 (result < 0) ? strerror(errno) : "");
156 DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
158 (result < 0) ? "failed: " : "",
159 (result < 0) ? strerror(errno) : ""));
164 static int audit_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path)
168 result = SMB_VFS_NEXT_RMDIR(handle, conn, path);
170 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
172 (result < 0) ? "failed: " : "",
173 (result < 0) ? strerror(errno) : "");
174 DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
176 (result < 0) ? "failed: " : "",
177 (result < 0) ? strerror(errno) : ""));
182 static int audit_open(vfs_handle_struct *handle, connection_struct *conn, const char *fname, int flags, mode_t mode)
186 result = SMB_VFS_NEXT_OPEN(handle, conn, fname, flags, mode);
188 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
190 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
191 (result < 0) ? "failed: " : "",
192 (result < 0) ? strerror(errno) : "");
193 DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
195 (result < 0) ? "failed: " : "",
196 (result < 0) ? strerror(errno) : ""));
201 static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd)
205 result = SMB_VFS_NEXT_CLOSE(handle, fsp, fd);
207 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
209 (result < 0) ? "failed: " : "",
210 (result < 0) ? strerror(errno) : "");
211 DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
213 (result < 0) ? "failed: " : "",
214 (result < 0) ? strerror(errno) : ""));
219 static int audit_rename(vfs_handle_struct *handle, connection_struct *conn, const char *old, const char *new)
223 result = SMB_VFS_NEXT_RENAME(handle, conn, old, new);
225 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
227 (result < 0) ? "failed: " : "",
228 (result < 0) ? strerror(errno) : "");
229 DEBUG(1, ("vfs_extd_audit: rename old: %s new: %s %s %s\n",
231 (result < 0) ? "failed: " : "",
232 (result < 0) ? strerror(errno) : ""));
237 static int audit_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path)
241 result = SMB_VFS_NEXT_UNLINK(handle, conn, path);
243 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
245 (result < 0) ? "failed: " : "",
246 (result < 0) ? strerror(errno) : "");
247 DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
249 (result < 0) ? "failed: " : "",
250 (result < 0) ? strerror(errno) : ""));
255 static int audit_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
259 result = SMB_VFS_NEXT_CHMOD(handle, conn, path, mode);
261 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
263 (result < 0) ? "failed: " : "",
264 (result < 0) ? strerror(errno) : "");
265 DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
267 (result < 0) ? "failed: " : "",
268 (result < 0) ? strerror(errno) : ""));
273 static int audit_chmod_acl(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
277 result = SMB_VFS_NEXT_CHMOD_ACL(handle, conn, path, mode);
279 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
281 (result < 0) ? "failed: " : "",
282 (result < 0) ? strerror(errno) : "");
283 DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
285 (result < 0) ? "failed: " : "",
286 (result < 0) ? strerror(errno) : ""));
291 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
295 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, fd, mode);
297 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
299 (result < 0) ? "failed: " : "",
300 (result < 0) ? strerror(errno) : "");
301 DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
303 (result < 0) ? "failed: " : "",
304 (result < 0) ? strerror(errno) : ""));
309 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
313 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, fd, mode);
315 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
317 (result < 0) ? "failed: " : "",
318 (result < 0) ? strerror(errno) : "");
319 DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
321 (result < 0) ? "failed: " : "",
322 (result < 0) ? strerror(errno) : ""));
327 NTSTATUS vfs_extd_audit_init(void)
329 NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "extd_audit", audit_op_tuples);
331 if (NT_STATUS_IS_ERR(ret))
334 vfs_extd_audit_debug_level = debug_add_class("extd_audit");
335 if (vfs_extd_audit_debug_level == -1) {
336 vfs_extd_audit_debug_level = DBGC_VFS;
337 DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
339 DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));