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, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #define DBGC_CLASS DBGC_VFS
30 /* Function prototypes */
32 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user);
33 static void audit_disconnect(vfs_handle_struct *handle);
34 static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr);
35 static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode);
36 static int audit_rmdir(vfs_handle_struct *handle, const char *path);
37 static int audit_open(vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
38 static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd);
39 static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname);
40 static int audit_unlink(vfs_handle_struct *handle, const char *path);
41 static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode);
42 static int audit_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode);
43 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode);
44 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode);
48 static vfs_op_tuple audit_op_tuples[] = {
52 {SMB_VFS_OP(audit_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
53 {SMB_VFS_OP(audit_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
55 /* Directory operations */
57 {SMB_VFS_OP(audit_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
58 {SMB_VFS_OP(audit_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
59 {SMB_VFS_OP(audit_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
63 {SMB_VFS_OP(audit_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
64 {SMB_VFS_OP(audit_close), SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
65 {SMB_VFS_OP(audit_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
66 {SMB_VFS_OP(audit_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
67 {SMB_VFS_OP(audit_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
68 {SMB_VFS_OP(audit_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
69 {SMB_VFS_OP(audit_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
70 {SMB_VFS_OP(audit_fchmod_acl), SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
72 /* Finish VFS operations definition */
74 {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
78 static int audit_syslog_facility(vfs_handle_struct *handle)
80 static const struct enum_list enum_log_facilities[] = {
82 { LOG_LOCAL0, "LOCAL0" },
83 { LOG_LOCAL1, "LOCAL1" },
84 { LOG_LOCAL2, "LOCAL2" },
85 { LOG_LOCAL3, "LOCAL3" },
86 { LOG_LOCAL4, "LOCAL4" },
87 { LOG_LOCAL5, "LOCAL5" },
88 { LOG_LOCAL6, "LOCAL6" },
89 { LOG_LOCAL7, "LOCAL7" }
94 facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
100 static int audit_syslog_priority(vfs_handle_struct *handle)
102 static const struct enum_list enum_log_priorities[] = {
103 { LOG_EMERG, "EMERG" },
104 { LOG_ALERT, "ALERT" },
105 { LOG_CRIT, "CRIT" },
107 { LOG_WARNING, "WARNING" },
108 { LOG_NOTICE, "NOTICE" },
109 { LOG_INFO, "INFO" },
110 { LOG_DEBUG, "DEBUG" }
115 priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority", enum_log_priorities, LOG_NOTICE);
120 /* Implementation of vfs_ops. Pass everything on to the default
121 operation but log event first. */
123 static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
127 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
129 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
132 result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
137 static void audit_disconnect(vfs_handle_struct *handle)
139 syslog(audit_syslog_priority(handle), "disconnected\n");
140 SMB_VFS_NEXT_DISCONNECT(handle);
145 static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
147 SMB_STRUCT_DIR *result;
149 result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
151 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
153 (result == NULL) ? "failed: " : "",
154 (result == NULL) ? strerror(errno) : "");
159 static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
163 result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
165 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
167 (result < 0) ? "failed: " : "",
168 (result < 0) ? strerror(errno) : "");
173 static int audit_rmdir(vfs_handle_struct *handle, const char *path)
177 result = SMB_VFS_NEXT_RMDIR(handle, path);
179 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
181 (result < 0) ? "failed: " : "",
182 (result < 0) ? strerror(errno) : "");
187 static int audit_open(vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode)
191 result = SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
193 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
195 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
196 (result < 0) ? "failed: " : "",
197 (result < 0) ? strerror(errno) : "");
202 static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd)
206 result = SMB_VFS_NEXT_CLOSE(handle, fsp, fd);
208 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
210 (result < 0) ? "failed: " : "",
211 (result < 0) ? strerror(errno) : "");
216 static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname)
220 result = SMB_VFS_NEXT_RENAME(handle, oldname, newname);
222 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
224 (result < 0) ? "failed: " : "",
225 (result < 0) ? strerror(errno) : "");
230 static int audit_unlink(vfs_handle_struct *handle, const char *path)
234 result = SMB_VFS_NEXT_UNLINK(handle, path);
236 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
238 (result < 0) ? "failed: " : "",
239 (result < 0) ? strerror(errno) : "");
244 static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
248 result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
250 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
252 (result < 0) ? "failed: " : "",
253 (result < 0) ? strerror(errno) : "");
258 static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
262 result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
264 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
266 (result < 0) ? "failed: " : "",
267 (result < 0) ? strerror(errno) : "");
272 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
276 result = SMB_VFS_NEXT_FCHMOD(handle, fsp, fd, mode);
278 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
280 (result < 0) ? "failed: " : "",
281 (result < 0) ? strerror(errno) : "");
286 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
290 result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, fd, mode);
292 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
294 (result < 0) ? "failed: " : "",
295 (result < 0) ? strerror(errno) : "");
300 NTSTATUS vfs_audit_init(void);
301 NTSTATUS vfs_audit_init(void)
303 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit", audit_op_tuples);