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[] = {
40 { LOG_AUTHPRIV, "AUTHPRIV" },
43 { LOG_AUDIT, "AUDIT" },
46 { LOG_CONSOLE, "CONSOLE" },
52 { LOG_DAEMON, "DAEMON" },
58 { LOG_INSTALL, "INSTALL" },
64 { LOG_LAUNCHD, "LAUNCHD" },
76 { LOG_MEGASAFE, "MEGASAFE" },
79 { LOG_NETINFO, "NETINFO" },
84 #ifdef LOG_NFACILITIES
85 { LOG_NFACILITIES, "NFACILITIES" },
94 { LOG_REMOTEAUTH, "REMOTEAUTH" },
97 { LOG_SECURITY, "SECURITY" },
100 { LOG_SYSLOG, "SYSLOG" },
103 { LOG_USER, "USER" },
106 { LOG_UUCP, "UUCP" },
108 { LOG_LOCAL0, "LOCAL0" },
109 { LOG_LOCAL1, "LOCAL1" },
110 { LOG_LOCAL2, "LOCAL2" },
111 { LOG_LOCAL3, "LOCAL3" },
112 { LOG_LOCAL4, "LOCAL4" },
113 { LOG_LOCAL5, "LOCAL5" },
114 { LOG_LOCAL6, "LOCAL6" },
115 { LOG_LOCAL7, "LOCAL7" },
121 facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
127 static int audit_syslog_priority(vfs_handle_struct *handle)
129 static const struct enum_list enum_log_priorities[] = {
130 { LOG_EMERG, "EMERG" },
131 { LOG_ALERT, "ALERT" },
132 { LOG_CRIT, "CRIT" },
134 { LOG_WARNING, "WARNING" },
135 { LOG_NOTICE, "NOTICE" },
136 { LOG_INFO, "INFO" },
137 { LOG_DEBUG, "DEBUG" },
143 priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
144 enum_log_priorities, LOG_NOTICE);
145 if (priority == -1) {
146 priority = LOG_WARNING;
152 /* Implementation of vfs_ops. Pass everything on to the default
153 operation but log event first. */
155 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
159 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
164 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
166 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
172 static void audit_disconnect(vfs_handle_struct *handle)
174 syslog(audit_syslog_priority(handle), "disconnected\n");
175 SMB_VFS_NEXT_DISCONNECT(handle);
180 static int audit_mkdirat(vfs_handle_struct *handle,
181 struct files_struct *dirfsp,
182 const struct smb_filename *smb_fname,
185 struct smb_filename *full_fname = NULL;
188 full_fname = full_path_from_dirfsp_atname(talloc_tos(),
191 if (full_fname == NULL) {
196 result = SMB_VFS_NEXT_MKDIRAT(handle,
201 syslog(audit_syslog_priority(handle), "mkdirat %s %s%s\n",
202 full_fname->base_name,
203 (result < 0) ? "failed: " : "",
204 (result < 0) ? strerror(errno) : "");
206 TALLOC_FREE(full_fname);
210 static int audit_openat(vfs_handle_struct *handle,
211 const struct files_struct *dirfsp,
212 const struct smb_filename *smb_fname,
213 struct files_struct *fsp,
219 result = SMB_VFS_NEXT_OPENAT(handle, dirfsp, smb_fname, fsp, flags, mode);
221 syslog(audit_syslog_priority(handle),
222 "openat %s (fd %d) %s%s%s\n",
223 fsp_str_dbg(fsp), result,
224 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
225 (result < 0) ? "failed: " : "",
226 (result < 0) ? strerror(errno) : "");
231 static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
235 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
237 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
238 fsp_get_pathref_fd(fsp),
239 (result < 0) ? "failed: " : "",
240 (result < 0) ? strerror(errno) : "");
245 static int audit_renameat(vfs_handle_struct *handle,
246 files_struct *srcfsp,
247 const struct smb_filename *smb_fname_src,
248 files_struct *dstfsp,
249 const struct smb_filename *smb_fname_dst)
253 result = SMB_VFS_NEXT_RENAMEAT(handle,
259 syslog(audit_syslog_priority(handle), "renameat %s -> %s %s%s\n",
260 smb_fname_src->base_name,
261 smb_fname_dst->base_name,
262 (result < 0) ? "failed: " : "",
263 (result < 0) ? strerror(errno) : "");
268 static int audit_unlinkat(vfs_handle_struct *handle,
269 struct files_struct *dirfsp,
270 const struct smb_filename *smb_fname,
275 result = SMB_VFS_NEXT_UNLINKAT(handle,
280 syslog(audit_syslog_priority(handle), "unlinkat %s %s%s\n",
281 smb_fname->base_name,
282 (result < 0) ? "failed: " : "",
283 (result < 0) ? strerror(errno) : "");
288 static int audit_chmod(vfs_handle_struct *handle,
289 const struct smb_filename *smb_fname,
294 result = SMB_VFS_NEXT_CHMOD(handle, smb_fname, mode);
296 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
297 smb_fname->base_name, mode,
298 (result < 0) ? "failed: " : "",
299 (result < 0) ? strerror(errno) : "");
304 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
308 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
310 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
311 fsp->fsp_name->base_name, mode,
312 (result < 0) ? "failed: " : "",
313 (result < 0) ? strerror(errno) : "");
318 static struct vfs_fn_pointers vfs_audit_fns = {
319 .connect_fn = audit_connect,
320 .disconnect_fn = audit_disconnect,
321 .mkdirat_fn = audit_mkdirat,
322 .openat_fn = audit_openat,
323 .close_fn = audit_close,
324 .renameat_fn = audit_renameat,
325 .unlinkat_fn = audit_unlinkat,
326 .chmod_fn = audit_chmod,
327 .fchmod_fn = audit_fchmod,
331 NTSTATUS vfs_audit_init(TALLOC_CTX *ctx)
333 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit",