* Auditing VFS module for samba. Log selected file operations to syslog
* facility.
*
- * Copyright (C) Tim Potter, 1999-2000
- * Copyright (C) Alexander Bokovoy, 2002
+ * Copyright (C) Tim Potter 1999-2000
+ * Copyright (C) Alexander Bokovoy 2002
+ * Copyright (C) Stefan (metze) Metzmacher 2002
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
-#include "config.h"
-#include <stdio.h>
-#include <sys/stat.h>
-#ifdef HAVE_UTIME_H
-#include <utime.h>
-#endif
-#ifdef HAVE_DIRENT_H
-#include <dirent.h>
-#endif
-#include <syslog.h>
-#ifdef HAVE_FCNTL_H
-#include <fcntl.h>
-#endif
-#include <errno.h>
-#include <string.h>
-#include <includes.h>
-#include <vfs.h>
-
-#ifndef SYSLOG_FACILITY
-#define SYSLOG_FACILITY LOG_USER
-#endif
-
-#ifndef SYSLOG_PRIORITY
-#define SYSLOG_PRIORITY LOG_NOTICE
-#endif
-
-/* Function prototypes */
-
-static int audit_connect(struct connection_struct *conn, const char *svc, const char *user);
-static void audit_disconnect(struct connection_struct *conn);
-static DIR *audit_opendir(struct connection_struct *conn, const char *fname);
-static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t mode);
-static int audit_rmdir(struct connection_struct *conn, const char *path);
-static int audit_open(struct connection_struct *conn, const char *fname, int flags, mode_t mode);
-static int audit_close(struct files_struct *fsp, int fd);
-static int audit_rename(struct connection_struct *conn, const char *old, const char *new);
-static int audit_unlink(struct connection_struct *conn, const char *path);
-static int audit_chmod(struct connection_struct *conn, const char *path, mode_t mode);
-static int audit_chmod_acl(struct connection_struct *conn, const char *name, mode_t mode);
-static int audit_fchmod(struct files_struct *fsp, int fd, mode_t mode);
-static int audit_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode);
-
-/* VFS operations */
-
-static struct vfs_ops default_vfs_ops; /* For passthrough operation */
-static struct smb_vfs_handle_struct *audit_handle;
-
-static vfs_op_tuple audit_ops[] = {
-
- /* Disk operations */
-
- {audit_connect, SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
- {audit_disconnect, SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
-
- /* Directory operations */
-
- {audit_opendir, SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
- {audit_mkdir, SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
- {audit_rmdir, SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
-
- /* File operations */
-
- {audit_open, SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
- {audit_close, SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
- {audit_rename, SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
- {audit_unlink, SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
- {audit_chmod, SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
- {audit_fchmod, SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
- {audit_chmod_acl, SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
- {audit_fchmod_acl, SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
-
- /* Finish VFS operations definition */
-
- {NULL, SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
-};
-/* VFS initialisation function. Return vfs_op_tuple array back to SAMBA. */
+#include "includes.h"
+#include "system/filesys.h"
+#include "system/syslog.h"
+#include "smbd/smbd.h"
-vfs_op_tuple *vfs_init(int *vfs_version, struct vfs_ops *def_vfs_ops,
- struct smb_vfs_handle_struct *vfs_handle)
-{
- *vfs_version = SMB_VFS_INTERFACE_VERSION;
- memcpy(&default_vfs_ops, def_vfs_ops, sizeof(struct vfs_ops));
-
- audit_handle = vfs_handle;
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_VFS
- openlog("smbd_audit", LOG_PID, SYSLOG_FACILITY);
- syslog(SYSLOG_PRIORITY, "VFS_INIT: vfs_ops loaded\n");
- return audit_ops;
+static int audit_syslog_facility(vfs_handle_struct *handle)
+{
+ static const struct enum_list enum_log_facilities[] = {
+ { LOG_USER, "USER" },
+ { LOG_LOCAL0, "LOCAL0" },
+ { LOG_LOCAL1, "LOCAL1" },
+ { LOG_LOCAL2, "LOCAL2" },
+ { LOG_LOCAL3, "LOCAL3" },
+ { LOG_LOCAL4, "LOCAL4" },
+ { LOG_LOCAL5, "LOCAL5" },
+ { LOG_LOCAL6, "LOCAL6" },
+ { LOG_LOCAL7, "LOCAL7" }
+ };
+
+ int facility;
+
+ facility = lp_parm_enum(SNUM(handle->conn), "audit", "facility", enum_log_facilities, LOG_USER);
+
+ return facility;
}
-/* VFS finalization function. */
-void vfs_done(connection_struct *conn)
+
+static int audit_syslog_priority(vfs_handle_struct *handle)
{
- syslog(SYSLOG_PRIORITY, "VFS_DONE: vfs module unloaded\n");
+ static const struct enum_list enum_log_priorities[] = {
+ { LOG_EMERG, "EMERG" },
+ { LOG_ALERT, "ALERT" },
+ { LOG_CRIT, "CRIT" },
+ { LOG_ERR, "ERR" },
+ { LOG_WARNING, "WARNING" },
+ { LOG_NOTICE, "NOTICE" },
+ { LOG_INFO, "INFO" },
+ { LOG_DEBUG, "DEBUG" }
+ };
+
+ int priority;
+
+ priority = lp_parm_enum(SNUM(handle->conn), "audit", "priority",
+ enum_log_priorities, LOG_NOTICE);
+ if (priority == -1) {
+ priority = LOG_WARNING;
+ }
+
+ return priority;
}
/* Implementation of vfs_ops. Pass everything on to the default
operation but log event first. */
-static int audit_connect(struct connection_struct *conn, const char *svc, const char *user)
+static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user)
{
- syslog(SYSLOG_PRIORITY, "connect to service %s by user %s\n",
+ int result;
+
+ result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
+ if (result < 0) {
+ return result;
+ }
+
+ openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
+
+ syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
svc, user);
- return default_vfs_ops.connect(conn, svc, user);
+ return 0;
}
-static void audit_disconnect(struct connection_struct *conn)
+static void audit_disconnect(vfs_handle_struct *handle)
{
- syslog(SYSLOG_PRIORITY, "disconnected\n");
- default_vfs_ops.disconnect(conn);
+ syslog(audit_syslog_priority(handle), "disconnected\n");
+ SMB_VFS_NEXT_DISCONNECT(handle);
+
+ return;
}
-static DIR *audit_opendir(struct connection_struct *conn, const char *fname)
+static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
{
- DIR *result = default_vfs_ops.opendir(conn, fname);
+ SMB_STRUCT_DIR *result;
+
+ result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
- syslog(SYSLOG_PRIORITY, "opendir %s %s%s\n",
+ syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
fname,
(result == NULL) ? "failed: " : "",
(result == NULL) ? strerror(errno) : "");
return result;
}
-static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t mode)
+static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
{
- int result = default_vfs_ops.mkdir(conn, path, mode);
-
- syslog(SYSLOG_PRIORITY, "mkdir %s %s%s\n",
+ int result;
+
+ result = SMB_VFS_NEXT_MKDIR(handle, path, mode);
+
+ syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n",
path,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_rmdir(struct connection_struct *conn, const char *path)
+static int audit_rmdir(vfs_handle_struct *handle, const char *path)
{
- int result = default_vfs_ops.rmdir(conn, path);
+ int result;
- syslog(SYSLOG_PRIORITY, "rmdir %s %s%s\n",
+ result = SMB_VFS_NEXT_RMDIR(handle, path);
+
+ syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n",
path,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_open(struct connection_struct *conn, const char *fname, int flags, mode_t mode)
+static int audit_open(vfs_handle_struct *handle,
+ struct smb_filename *smb_fname, files_struct *fsp,
+ int flags, mode_t mode)
{
- int result = default_vfs_ops.open(conn, fname, flags, mode);
+ int result;
- syslog(SYSLOG_PRIORITY, "open %s (fd %d) %s%s%s\n",
- fname, result,
+ result = SMB_VFS_NEXT_OPEN(handle, smb_fname, fsp, flags, mode);
+
+ syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n",
+ smb_fname->base_name, result,
((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_close(struct files_struct *fsp, int fd)
+static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
{
- int result = default_vfs_ops.close(fsp, fd);
+ int result;
+
+ result = SMB_VFS_NEXT_CLOSE(handle, fsp);
- syslog(SYSLOG_PRIORITY, "close fd %d %s%s\n",
- fd,
+ syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
+ fsp->fh->fd,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_rename(struct connection_struct *conn, const char *old, const char *new)
+static int audit_rename(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname_src,
+ const struct smb_filename *smb_fname_dst)
{
- int result = default_vfs_ops.rename(conn, old, new);
+ int result;
+
+ result = SMB_VFS_NEXT_RENAME(handle, smb_fname_src, smb_fname_dst);
- syslog(SYSLOG_PRIORITY, "rename %s -> %s %s%s\n",
- old, new,
+ syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
+ smb_fname_src->base_name,
+ smb_fname_dst->base_name,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_unlink(struct connection_struct *conn, const char *path)
+static int audit_unlink(vfs_handle_struct *handle,
+ const struct smb_filename *smb_fname)
{
- int result = default_vfs_ops.unlink(conn, path);
+ int result;
- syslog(SYSLOG_PRIORITY, "unlink %s %s%s\n",
- path,
+ result = SMB_VFS_NEXT_UNLINK(handle, smb_fname);
+
+ syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
+ smb_fname->base_name,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_chmod(struct connection_struct *conn, const char *path, mode_t mode)
+static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
{
- int result = default_vfs_ops.chmod(conn, path, mode);
+ int result;
+
+ result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
- syslog(SYSLOG_PRIORITY, "chmod %s mode 0x%x %s%s\n",
+ syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
path, mode,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_chmod_acl(struct connection_struct *conn, const char *path, mode_t mode)
+static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
{
int result;
- if ( !default_vfs_ops.chmod_acl )
- return 0;
+ result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
- result = default_vfs_ops.chmod_acl(conn, path, mode);
-
- syslog(SYSLOG_PRIORITY, "chmod_acl %s mode 0x%x %s%s\n",
+ syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
path, mode,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_fchmod(struct files_struct *fsp, int fd, mode_t mode)
+static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
{
- int result = default_vfs_ops.fchmod(fsp, fd, mode);
+ int result;
+
+ result = SMB_VFS_NEXT_FCHMOD(handle, fsp, mode);
- syslog(SYSLOG_PRIORITY, "fchmod %s mode 0x%x %s%s\n",
- fsp->fsp_name, mode,
+ syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n",
+ fsp->fsp_name->base_name, mode,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
-static int audit_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode)
+static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
{
int result;
- if ( !default_vfs_ops.fchmod_acl )
- return 0;
+ result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
- result = default_vfs_ops.fchmod_acl(fsp, fd, mode);
-
- syslog(SYSLOG_PRIORITY, "fchmod_acl %s mode 0x%x %s%s\n",
- fsp->fsp_name, mode,
+ syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n",
+ fsp->fsp_name->base_name, mode,
(result < 0) ? "failed: " : "",
(result < 0) ? strerror(errno) : "");
return result;
}
+
+static struct vfs_fn_pointers vfs_audit_fns = {
+ .connect_fn = audit_connect,
+ .disconnect = audit_disconnect,
+ .opendir = audit_opendir,
+ .mkdir = audit_mkdir,
+ .rmdir = audit_rmdir,
+ .open_fn = audit_open,
+ .close_fn = audit_close,
+ .rename = audit_rename,
+ .unlink = audit_unlink,
+ .chmod = audit_chmod,
+ .fchmod = audit_fchmod,
+ .chmod_acl = audit_chmod_acl,
+ .fchmod_acl = audit_fchmod_acl
+};
+
+NTSTATUS vfs_audit_init(void)
+{
+ return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit",
+ &vfs_audit_fns);
+}
git.samba.org / kai / samba-autobuild / .git / blobdiff