source: vendor/3.5.4/source3/modules/vfs_audit.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 7.1 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
26#undef DBGC_CLASS
27#define DBGC_CLASS DBGC_VFS
28
29static int audit_syslog_facility(vfs_handle_struct *handle)
30{
31 static const struct enum_list enum_log_facilities[] = {
32 { LOG_USER, "USER" },
33 { LOG_LOCAL0, "LOCAL0" },
34 { LOG_LOCAL1, "LOCAL1" },
35 { LOG_LOCAL2, "LOCAL2" },
36 { LOG_LOCAL3, "LOCAL3" },
37 { LOG_LOCAL4, "LOCAL4" },
38 { LOG_LOCAL5, "LOCAL5" },
39 { LOG_LOCAL6, "LOCAL6" },
40 { LOG_LOCAL7, "LOCAL7" }
41 };
42
43 int facility;
44
45 facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
46
47 return facility;
48}
49
50
51static int audit_syslog_priority(vfs_handle_struct *handle)
52{
53 static const struct enum_list enum_log_priorities[] = {
54 { LOG_EMERG, "EMERG" },
55 { LOG_ALERT, "ALERT" },
56 { LOG_CRIT, "CRIT" },
57 { LOG_ERR, "ERR" },
58 { LOG_WARNING, "WARNING" },
59 { LOG_NOTICE, "NOTICE" },
60 { LOG_INFO, "INFO" },
61 { LOG_DEBUG, "DEBUG" }
62 };
63
64 int priority;
65
66 priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
67 enum_log_priorities, LOG_NOTICE);
68 if (priority == -1) {
69 priority = LOG_WARNING;
70 }
71
72 return priority;
73}
74
75/* Implementation of vfs_ops. Pass everything on to the default
76 operation but log event first. */
77
78static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
79{
80 int result;
81
82 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
83 if (result < 0) {
84 return result;
85 }
86
87 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
88
89 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
90 svc, user);
91
92 return 0;
93}
94
95static void audit_disconnect(vfs_handle_struct *handle)
96{
97 syslog(audit_syslog_priority(handle), "disconnected\n");
98 SMB_VFS_NEXT_DISCONNECT(handle);
99
100 return;
101}
102
103static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
104{
105 SMB_STRUCT_DIR *result;
106
107 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
108
109 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
110 fname,
111 (result == NULL) ? "failed: " : "",
112 (result == NULL) ? strerror(errno) : "");
113
114 return result;
115}
116
117static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
118{
119 int result;
120
121 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
122
123 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
124 path,
125 (result < 0) ? "failed: " : "",
126 (result < 0) ? strerror(errno) : "");
127
128 return result;
129}
130
131static int audit_rmdir(vfs_handle_struct *handle, const char *path)
132{
133 int result;
134
135 result = SMB_VFS_NEXT_RMDIR(handle, path);
136
137 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
138 path,
139 (result < 0) ? "failed: " : "",
140 (result < 0) ? strerror(errno) : "");
141
142 return result;
143}
144
145static int audit_open(vfs_handle_struct *handle,
146 struct smb_filename *smb_fname, files_struct *fsp,
147 int flags, mode_t mode)
148{
149 int result;
150
151 result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
152
153 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
154 smb_fname->base_name, result,
155 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
156 (result < 0) ? "failed: " : "",
157 (result < 0) ? strerror(errno) : "");
158
159 return result;
160}
161
162static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
163{
164 int result;
165
166 result = SMB_VFS_NEXT_CLOSE(handle, fsp);
167
168 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
169 fsp->fh->fd,
170 (result < 0) ? "failed: " : "",
171 (result < 0) ? strerror(errno) : "");
172
173 return result;
174}
175
176static int audit_rename(vfs_handle_struct *handle,
177 const struct smb_filename *smb_fname_src,
178 const struct smb_filename *smb_fname_dst)
179{
180 int result;
181
182 result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
183
184 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
185 smb_fname_src->base_name,
186 smb_fname_dst->base_name,
187 (result < 0) ? "failed: " : "",
188 (result < 0) ? strerror(errno) : "");
189
190 return result;
191}
192
193static int audit_unlink(vfs_handle_struct *handle,
194 const struct smb_filename *smb_fname)
195{
196 int result;
197
198 result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
199
200 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
201 smb_fname->base_name,
202 (result < 0) ? "failed: " : "",
203 (result < 0) ? strerror(errno) : "");
204
205 return result;
206}
207
208static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
209{
210 int result;
211
212 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
213
214 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
215 path, mode,
216 (result < 0) ? "failed: " : "",
217 (result < 0) ? strerror(errno) : "");
218
219 return result;
220}
221
222static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
223{
224 int result;
225
226 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
227
228 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
229 path, mode,
230 (result < 0) ? "failed: " : "",
231 (result < 0) ? strerror(errno) : "");
232
233 return result;
234}
235
236static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
237{
238 int result;
239
240 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
241
242 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
243 fsp->fsp_name->base_name, mode,
244 (result < 0) ? "failed: " : "",
245 (result < 0) ? strerror(errno) : "");
246
247 return result;
248}
249
250static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
251{
252 int result;
253
254 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
255
256 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
257 fsp->fsp_name->base_name, mode,
258 (result < 0) ? "failed: " : "",
259 (result < 0) ? strerror(errno) : "");
260
261 return result;
262}
263
264static struct vfs_fn_pointers vfs_audit_fns = {
265 .connect_fn = audit_connect,
266 .disconnect = audit_disconnect,
267 .opendir = audit_opendir,
268 .mkdir = audit_mkdir,
269 .rmdir = audit_rmdir,
270 .open = audit_open,
271 .close_fn = audit_close,
272 .rename = audit_rename,
273 .unlink = audit_unlink,
274 .chmod = audit_chmod,
275 .fchmod = audit_fchmod,
276 .chmod_acl = audit_chmod_acl,
277 .fchmod_acl = audit_fchmod_acl
278};
279
280NTSTATUS vfs_audit_init(void)
281{
282 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit",
283 &vfs_audit_fns);
284}
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