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) Stefan (metze) Metzmacher 2002
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, see <http://www.gnu.org/licenses/>.
25 #include "system/filesys.h"
26 #include "system/syslog.h"
27 #include "smbd/smbd.h"
28 #include "lib/param/loadparm.h"
31 #define DBGC_CLASS DBGC_VFS
33 static int audit_syslog_facility(vfs_handle_struct *handle)
35 static const struct enum_list enum_log_facilities[] = {
38 { LOG_DAEMON, "DAEMON" },
48 { LOG_SECURITY, "SECURITY" },
50 { LOG_SYSLOG, "SYSLOG" },
53 { LOG_LOCAL0, "LOCAL0" },
54 { LOG_LOCAL1, "LOCAL1" },
55 { LOG_LOCAL2, "LOCAL2" },
56 { LOG_LOCAL3, "LOCAL3" },
57 { LOG_LOCAL4, "LOCAL4" },
58 { LOG_LOCAL5, "LOCAL5" },
59 { LOG_LOCAL6, "LOCAL6" },
60 { LOG_LOCAL7, "LOCAL7" },
66 facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
72 static int audit_syslog_priority(vfs_handle_struct *handle)
74 static const struct enum_list enum_log_priorities[] = {
75 { LOG_EMERG, "EMERG" },
76 { LOG_ALERT, "ALERT" },
79 { LOG_WARNING, "WARNING" },
80 { LOG_NOTICE, "NOTICE" },
82 { LOG_DEBUG, "DEBUG" },
88 priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
89 enum_log_priorities, LOG_NOTICE);
91 priority = LOG_WARNING;
97 /* Implementation of vfs_ops. Pass everything on to the default
98 operation but log event first. */
100 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
104 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
109 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
111 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
117 static void audit_disconnect(vfs_handle_struct *handle)
119 syslog(audit_syslog_priority(handle), "disconnected\n");
120 SMB_VFS_NEXT_DISCONNECT(handle);
125 static DIR *audit_opendir(vfs_handle_struct *handle,
126 const struct smb_filename *smb_fname,
132 result = SMB_VFS_NEXT_OPENDIR(handle, smb_fname, mask, attr);
134 syslog(audit_syslog_priority(handle), "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 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
151 smb_fname->base_name,
152 (result < 0) ? "failed: " : "",
153 (result < 0) ? strerror(errno) : "");
158 static int audit_rmdir(vfs_handle_struct *handle,
159 const struct smb_filename *smb_fname)
163 result = SMB_VFS_NEXT_RMDIR(handle, smb_fname);
165 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
166 smb_fname->base_name,
167 (result < 0) ? "failed: " : "",
168 (result < 0) ? strerror(errno) : "");
173 static int audit_open(vfs_handle_struct *handle,
174 struct smb_filename *smb_fname, files_struct *fsp,
175 int flags, mode_t mode)
179 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
181 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
182 smb_fname->base_name, result,
183 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
184 (result < 0) ? "failed: " : "",
185 (result < 0) ? strerror(errno) : "");
190 static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
194 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
196 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
198 (result < 0) ? "failed: " : "",
199 (result < 0) ? strerror(errno) : "");
204 static int audit_rename(vfs_handle_struct *handle,
205 const struct smb_filename *smb_fname_src,
206 const struct smb_filename *smb_fname_dst)
210 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
212 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
213 smb_fname_src->base_name,
214 smb_fname_dst->base_name,
215 (result < 0) ? "failed: " : "",
216 (result < 0) ? strerror(errno) : "");
221 static int audit_unlink(vfs_handle_struct *handle,
222 const struct smb_filename *smb_fname)
226 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
228 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
229 smb_fname->base_name,
230 (result < 0) ? "failed: " : "",
231 (result < 0) ? strerror(errno) : "");
236 static int audit_chmod(vfs_handle_struct *handle,
237 const struct smb_filename *smb_fname,
242 result = SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
244 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
245 smb_fname->base_name, mode,
246 (result < 0) ? "failed: " : "",
247 (result < 0) ? strerror(errno) : "");
252 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
256 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
258 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
259 fsp->fsp_name->base_name, mode,
260 (result < 0) ? "failed: " : "",
261 (result < 0) ? strerror(errno) : "");
266 static struct vfs_fn_pointers vfs_audit_fns = {
267 .connect_fn = audit_connect,
268 .disconnect_fn = audit_disconnect,
269 .opendir_fn = audit_opendir,
270 .mkdir_fn = audit_mkdir,
271 .rmdir_fn = audit_rmdir,
272 .open_fn = audit_open,
273 .close_fn = audit_close,
274 .rename_fn = audit_rename,
275 .unlink_fn = audit_unlink,
276 .chmod_fn = audit_chmod,
277 .fchmod_fn = audit_fchmod,
281 NTSTATUS vfs_audit_init(TALLOC_CTX *ctx)
283 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit",