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https://github.com/samba-team/samba.git
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Move working VFS modules to source/modules/
This commit is contained in:
Jelmer Vernooij
268
source/modules/vfs_audit.c
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268
source/modules/vfs_audit.c
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/*
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* Auditing VFS module for samba. Log selected file operations to syslog
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* facility.
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*
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* Copyright (C) Tim Potter, 1999-2000
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* Copyright (C) Alexander Bokovoy, 2002
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <sys/stat.h>
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#ifdef HAVE_UTIME_H
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#include <utime.h>
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#endif
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#ifdef HAVE_DIRENT_H
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#include <dirent.h>
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#endif
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#include <syslog.h>
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#ifdef HAVE_FCNTL_H
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#include <fcntl.h>
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#endif
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#include <errno.h>
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#include <string.h>
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#include <includes.h>
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#include <vfs.h>
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#ifndef SYSLOG_FACILITY
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#define SYSLOG_FACILITY LOG_USER
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#endif
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#ifndef SYSLOG_PRIORITY
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#define SYSLOG_PRIORITY LOG_NOTICE
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#endif
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/* Function prototypes */
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static int audit_connect(struct connection_struct *conn, const char *svc, const char *user);
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static void audit_disconnect(struct connection_struct *conn);
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static DIR *audit_opendir(struct connection_struct *conn, const char *fname);
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static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t mode);
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static int audit_rmdir(struct connection_struct *conn, const char *path);
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static int audit_open(struct connection_struct *conn, const char *fname, int flags, mode_t mode);
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static int audit_close(struct files_struct *fsp, int fd);
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static int audit_rename(struct connection_struct *conn, const char *old, const char *new);
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static int audit_unlink(struct connection_struct *conn, const char *path);
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static int audit_chmod(struct connection_struct *conn, const char *path, mode_t mode);
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static int audit_chmod_acl(struct connection_struct *conn, const char *name, mode_t mode);
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static int audit_fchmod(struct files_struct *fsp, int fd, mode_t mode);
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static int audit_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode);
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/* VFS operations */
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static struct vfs_ops default_vfs_ops; /* For passthrough operation */
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static struct smb_vfs_handle_struct *audit_handle;
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static vfs_op_tuple audit_ops[] = {
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/* Disk operations */
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{audit_connect, SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
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{audit_disconnect, SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
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/* Directory operations */
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{audit_opendir, SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
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{audit_mkdir, SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
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{audit_rmdir, SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
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/* File operations */
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{audit_open, SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
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{audit_close, SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
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{audit_rename, SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
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{audit_unlink, SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
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{audit_chmod, SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
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{audit_fchmod, SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
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{audit_chmod_acl, SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
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{audit_fchmod_acl, SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
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/* Finish VFS operations definition */
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{NULL, SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
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};
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/* VFS initialisation function. Return vfs_op_tuple array back to SAMBA. */
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vfs_op_tuple *vfs_init(int *vfs_version, struct vfs_ops *def_vfs_ops,
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struct smb_vfs_handle_struct *vfs_handle)
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{
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*vfs_version = SMB_VFS_INTERFACE_VERSION;
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memcpy(&default_vfs_ops, def_vfs_ops, sizeof(struct vfs_ops));
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audit_handle = vfs_handle;
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openlog("smbd_audit", LOG_PID, SYSLOG_FACILITY);
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syslog(SYSLOG_PRIORITY, "VFS_INIT: vfs_ops loaded\n");
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return audit_ops;
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}
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/* VFS finalization function. */
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void vfs_done(connection_struct *conn)
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{
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syslog(SYSLOG_PRIORITY, "VFS_DONE: vfs module unloaded\n");
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}
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/* Implementation of vfs_ops. Pass everything on to the default
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operation but log event first. */
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static int audit_connect(struct connection_struct *conn, const char *svc, const char *user)
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{
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syslog(SYSLOG_PRIORITY, "connect to service %s by user %s\n",
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svc, user);
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return default_vfs_ops.connect(conn, svc, user);
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}
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static void audit_disconnect(struct connection_struct *conn)
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{
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syslog(SYSLOG_PRIORITY, "disconnected\n");
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default_vfs_ops.disconnect(conn);
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}
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static DIR *audit_opendir(struct connection_struct *conn, const char *fname)
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{
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DIR *result = default_vfs_ops.opendir(conn, fname);
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syslog(SYSLOG_PRIORITY, "opendir %s %s%s\n",
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fname,
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(result == NULL) ? "failed: " : "",
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(result == NULL) ? strerror(errno) : "");
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return result;
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}
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static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t mode)
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{
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int result = default_vfs_ops.mkdir(conn, path, mode);
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syslog(SYSLOG_PRIORITY, "mkdir %s %s%s\n",
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path,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_rmdir(struct connection_struct *conn, const char *path)
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{
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int result = default_vfs_ops.rmdir(conn, path);
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syslog(SYSLOG_PRIORITY, "rmdir %s %s%s\n",
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path,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_open(struct connection_struct *conn, const char *fname, int flags, mode_t mode)
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{
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int result = default_vfs_ops.open(conn, fname, flags, mode);
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syslog(SYSLOG_PRIORITY, "open %s (fd %d) %s%s%s\n",
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fname, result,
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((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "",
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_close(struct files_struct *fsp, int fd)
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{
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int result = default_vfs_ops.close(fsp, fd);
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syslog(SYSLOG_PRIORITY, "close fd %d %s%s\n",
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fd,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_rename(struct connection_struct *conn, const char *old, const char *new)
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{
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int result = default_vfs_ops.rename(conn, old, new);
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syslog(SYSLOG_PRIORITY, "rename %s -> %s %s%s\n",
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old, new,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_unlink(struct connection_struct *conn, const char *path)
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{
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int result = default_vfs_ops.unlink(conn, path);
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syslog(SYSLOG_PRIORITY, "unlink %s %s%s\n",
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path,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_chmod(struct connection_struct *conn, const char *path, mode_t mode)
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{
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int result = default_vfs_ops.chmod(conn, path, mode);
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syslog(SYSLOG_PRIORITY, "chmod %s mode 0x%x %s%s\n",
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path, mode,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_chmod_acl(struct connection_struct *conn, const char *path, mode_t mode)
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{
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int result = default_vfs_ops.chmod_acl(conn, path, mode);
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syslog(SYSLOG_PRIORITY, "chmod_acl %s mode 0x%x %s%s\n",
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path, mode,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_fchmod(struct files_struct *fsp, int fd, mode_t mode)
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{
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int result = default_vfs_ops.fchmod(fsp, fd, mode);
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syslog(SYSLOG_PRIORITY, "fchmod %s mode 0x%x %s%s\n",
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fsp->fsp_name, mode,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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static int audit_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode)
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{
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int result = default_vfs_ops.fchmod_acl(fsp, fd, mode);
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syslog(SYSLOG_PRIORITY, "fchmod_acl %s mode 0x%x %s%s\n",
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fsp->fsp_name, mode,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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return result;
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}
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