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 2 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, connection_struct *conn, const char *svc, const char *user);
33 static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn);
34 static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname);
35 static int audit_mkdir(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode);
36 static int audit_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path);
37 static int audit_open(vfs_handle_struct *handle, connection_struct *conn, const char *fname, 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, connection_struct *conn, const char *old, const char *new);
40 static int audit_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path);
41 static int audit_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode);
42 static int audit_chmod_acl(vfs_handle_struct *handle, connection_struct *conn, 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 {VFS_OP(audit_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
53 {VFS_OP(audit_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
55 /* Directory operations */
57 {VFS_OP(audit_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
58 {VFS_OP(audit_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
59 {VFS_OP(audit_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
63 {VFS_OP(audit_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
64 {VFS_OP(audit_close), SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
65 {VFS_OP(audit_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
66 {VFS_OP(audit_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
67 {VFS_OP(audit_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
68 {VFS_OP(audit_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
69 {VFS_OP(audit_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
70 {VFS_OP(audit_fchmod_acl), SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
72 /* Finish VFS operations definition */
74 {VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
78 static int audit_syslog_facility(vfs_handle_struct *handle)
80 /* fix me: let this be configurable by:
81 * lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"audit"),"syslog facility",
82 * audit_enum_facility,LOG_USER);
88 static int audit_syslog_priority(vfs_handle_struct *handle)
90 /* fix me: let this be configurable by:
91 * lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"audit"),"syslog priority",
92 * audit_enum_priority,LOG_NOTICE);
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, connection_struct *conn, const char *svc, const char *user)
104 openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
106 syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
109 result = VFS_NEXT_CONNECT(handle, conn, svc, user);
114 static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn)
116 syslog(audit_syslog_priority(handle), "disconnected\n");
117 VFS_NEXT_DISCONNECT(handle, conn);
122 static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname)
126 result = VFS_NEXT_OPENDIR(handle, conn, fname);
128 syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
130 (result == NULL) ? "failed: " : "",
131 (result == NULL) ? strerror(errno) : "");
136 static int audit_mkdir(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
140 result = VFS_NEXT_MKDIR(handle, conn, path, mode);
142 syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
144 (result < 0) ? "failed: " : "",
145 (result < 0) ? strerror(errno) : "");
150 static int audit_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path)
154 result = VFS_NEXT_RMDIR(handle, conn, path);
156 syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
158 (result < 0) ? "failed: " : "",
159 (result < 0) ? strerror(errno) : "");
164 static int audit_open(vfs_handle_struct *handle, connection_struct *conn, const char *fname, int flags, mode_t mode)
168 result = VFS_NEXT_OPEN(handle, conn, fname, flags, mode);
170 syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
172 ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
173 (result < 0) ? "failed: " : "",
174 (result < 0) ? strerror(errno) : "");
179 static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd)
183 result = VFS_NEXT_CLOSE(handle, fsp, fd);
185 syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
187 (result < 0) ? "failed: " : "",
188 (result < 0) ? strerror(errno) : "");
193 static int audit_rename(vfs_handle_struct *handle, connection_struct *conn, const char *old, const char *new)
197 result = VFS_NEXT_RENAME(handle, conn, old, new);
199 syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
201 (result < 0) ? "failed: " : "",
202 (result < 0) ? strerror(errno) : "");
207 static int audit_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path)
211 result = VFS_NEXT_UNLINK(handle, conn, path);
213 syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
215 (result < 0) ? "failed: " : "",
216 (result < 0) ? strerror(errno) : "");
221 static int audit_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
225 result = VFS_NEXT_CHMOD(handle, conn, path, mode);
227 syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
229 (result < 0) ? "failed: " : "",
230 (result < 0) ? strerror(errno) : "");
235 static int audit_chmod_acl(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
239 result = VFS_NEXT_CHMOD_ACL(handle, conn, path, mode);
241 syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
243 (result < 0) ? "failed: " : "",
244 (result < 0) ? strerror(errno) : "");
249 static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
253 result = VFS_NEXT_FCHMOD(handle, fsp, fd, mode);
255 syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
257 (result < 0) ? "failed: " : "",
258 (result < 0) ? strerror(errno) : "");
263 static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
267 result = VFS_NEXT_FCHMOD_ACL(handle, fsp, fd, mode);
269 syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
271 (result < 0) ? "failed: " : "",
272 (result < 0) ? strerror(errno) : "");
277 NTSTATUS vfs_audit_init(void)
279 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit", audit_op_tuples);