source: vendor/current/source3/modules/vfs_audit.c

Last change on this file was 988, checked in by Silvan Scherrer, 9 years ago

Samba Server: update vendor to version 4.4.3
File size: 7.2 KB
Line 
1/*
2 * Auditing VFS module for samba. Log selected file operations to syslog
3 * facility.
4 *
5 * Copyright (C) Tim Potter 1999-2000
6 * Copyright (C) Alexander Bokovoy 2002
7 * Copyright (C) Stefan (metze) Metzmacher 2002
8 *
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.
13 *
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.
18 *
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/>.
21 */
22
23
24#include "includes.h"
25#include "system/filesys.h"
26#include "system/syslog.h"
27#include "smbd/smbd.h"
28#include "lib/param/loadparm.h"
29
30#undef DBGC_CLASS
31#define DBGC_CLASS DBGC_VFS
32
33static int audit_syslog_facility(vfs_handle_struct *handle)
34{
35 static const struct enum_list enum_log_facilities[] = {
36 { LOG_USER, "USER" },
37 { LOG_LOCAL0, "LOCAL0" },
38 { LOG_LOCAL1, "LOCAL1" },
39 { LOG_LOCAL2, "LOCAL2" },
40 { LOG_LOCAL3, "LOCAL3" },
41 { LOG_LOCAL4, "LOCAL4" },
42 { LOG_LOCAL5, "LOCAL5" },
43 { LOG_LOCAL6, "LOCAL6" },
44 { LOG_LOCAL7, "LOCAL7" },
45 { -1, NULL}
46 };
47
48 int facility;
49
50 facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
51
52 return facility;
53}
54
55
56static int audit_syslog_priority(vfs_handle_struct *handle)
57{
58 static const struct enum_list enum_log_priorities[] = {
59 { LOG_EMERG, "EMERG" },
60 { LOG_ALERT, "ALERT" },
61 { LOG_CRIT, "CRIT" },
62 { LOG_ERR, "ERR" },
63 { LOG_WARNING, "WARNING" },
64 { LOG_NOTICE, "NOTICE" },
65 { LOG_INFO, "INFO" },
66 { LOG_DEBUG, "DEBUG" },
67 { -1, NULL}
68 };
69
70 int priority;
71
72 priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
73 enum_log_priorities, LOG_NOTICE);
74 if (priority == -1) {
75 priority = LOG_WARNING;
76 }
77
78 return priority;
79}
80
81/* Implementation of vfs_ops. Pass everything on to the default
82 operation but log event first. */
83
84static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
85{
86 int result;
87
88 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
89 if (result < 0) {
90 return result;
91 }
92
93 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
94
95 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
96 svc, user);
97
98 return 0;
99}
100
101static void audit_disconnect(vfs_handle_struct *handle)
102{
103 syslog(audit_syslog_priority(handle), "disconnected\n");
104 SMB_VFS_NEXT_DISCONNECT(handle);
105
106 return;
107}
108
109static DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32_t attr)
110{
111 DIR *result;
112
113 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
114
115 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
116 fname,
117 (result == NULL) ? "failed: " : "",
118 (result == NULL) ? strerror(errno) : "");
119
120 return result;
121}
122
123static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
124{
125 int result;
126
127 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
128
129 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
130 path,
131 (result < 0) ? "failed: " : "",
132 (result < 0) ? strerror(errno) : "");
133
134 return result;
135}
136
137static int audit_rmdir(vfs_handle_struct *handle, const char *path)
138{
139 int result;
140
141 result = SMB_VFS_NEXT_RMDIR(handle, path);
142
143 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
144 path,
145 (result < 0) ? "failed: " : "",
146 (result < 0) ? strerror(errno) : "");
147
148 return result;
149}
150
151static int audit_open(vfs_handle_struct *handle,
152 struct smb_filename *smb_fname, files_struct *fsp,
153 int flags, mode_t mode)
154{
155 int result;
156
157 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
158
159 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
160 smb_fname->base_name, result,
161 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
162 (result < 0) ? "failed: " : "",
163 (result < 0) ? strerror(errno) : "");
164
165 return result;
166}
167
168static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
169{
170 int result;
171
172 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
173
174 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
175 fsp->fh->fd,
176 (result < 0) ? "failed: " : "",
177 (result < 0) ? strerror(errno) : "");
178
179 return result;
180}
181
182static int audit_rename(vfs_handle_struct *handle,
183 const struct smb_filename *smb_fname_src,
184 const struct smb_filename *smb_fname_dst)
185{
186 int result;
187
188 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
189
190 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
191 smb_fname_src->base_name,
192 smb_fname_dst->base_name,
193 (result < 0) ? "failed: " : "",
194 (result < 0) ? strerror(errno) : "");
195
196 return result;
197}
198
199static int audit_unlink(vfs_handle_struct *handle,
200 const struct smb_filename *smb_fname)
201{
202 int result;
203
204 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
205
206 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
207 smb_fname->base_name,
208 (result < 0) ? "failed: " : "",
209 (result < 0) ? strerror(errno) : "");
210
211 return result;
212}
213
214static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
215{
216 int result;
217
218 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
219
220 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
221 path, mode,
222 (result < 0) ? "failed: " : "",
223 (result < 0) ? strerror(errno) : "");
224
225 return result;
226}
227
228static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
229{
230 int result;
231
232 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
233
234 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
235 path, mode,
236 (result < 0) ? "failed: " : "",
237 (result < 0) ? strerror(errno) : "");
238
239 return result;
240}
241
242static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
243{
244 int result;
245
246 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
247
248 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
249 fsp->fsp_name->base_name, mode,
250 (result < 0) ? "failed: " : "",
251 (result < 0) ? strerror(errno) : "");
252
253 return result;
254}
255
256static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
257{
258 int result;
259
260 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
261
262 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
263 fsp->fsp_name->base_name, mode,
264 (result < 0) ? "failed: " : "",
265 (result < 0) ? strerror(errno) : "");
266
267 return result;
268}
269
270static struct vfs_fn_pointers vfs_audit_fns = {
271 .connect_fn = audit_connect,
272 .disconnect_fn = audit_disconnect,
273 .opendir_fn = audit_opendir,
274 .mkdir_fn = audit_mkdir,
275 .rmdir_fn = audit_rmdir,
276 .open_fn = audit_open,
277 .close_fn = audit_close,
278 .rename_fn = audit_rename,
279 .unlink_fn = audit_unlink,
280 .chmod_fn = audit_chmod,
281 .fchmod_fn = audit_fchmod,
282 .chmod_acl_fn = audit_chmod_acl,
283 .fchmod_acl_fn = audit_fchmod_acl
284};
285
286static_decl_vfs;
287NTSTATUS vfs_audit_init(void)
288{
289 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit",
290 &vfs_audit_fns);
291}
Note: See TracBrowser for help on using the repository browser.