mirror of
https://github.com/samba-team/samba.git
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19ca97a70f
safe for using our headers and linking with C++ modules. Stops us
from using C++ reserved keywords in our code.
Jeremy
(This used to be commit 9506b8e145)
344 lines
11 KiB
C
344 lines
11 KiB
C
/*
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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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* Copyright (C) John H Terpstra, 2003
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* Copyright (C) Stefan (metze) Metzmacher, 2003
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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 "includes.h"
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static int vfs_extd_audit_debug_level = DBGC_VFS;
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#undef DBGC_CLASS
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#define DBGC_CLASS vfs_extd_audit_debug_level
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/* Function prototypes */
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static int audit_connect(vfs_handle_struct *handle, connection_struct *conn, const char *svc, const char *user);
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static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn);
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static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname);
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static int audit_mkdir(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode);
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static int audit_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path);
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static int audit_open(vfs_handle_struct *handle, connection_struct *conn, const char *fname, int flags, mode_t mode);
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static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd);
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static int audit_rename(vfs_handle_struct *handle, connection_struct *conn, const char *oldname, const char *newname);
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static int audit_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path);
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static int audit_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode);
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static int audit_chmod_acl(vfs_handle_struct *handle, connection_struct *conn, const char *name, mode_t mode);
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static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode);
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static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode);
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/* VFS operations */
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static vfs_op_tuple audit_op_tuples[] = {
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/* Disk operations */
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{SMB_VFS_OP(audit_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_disconnect), SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER},
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/* Directory operations */
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{SMB_VFS_OP(audit_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_rmdir), SMB_VFS_OP_RMDIR, SMB_VFS_LAYER_LOGGER},
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/* File operations */
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{SMB_VFS_OP(audit_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_close), SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER},
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{SMB_VFS_OP(audit_fchmod_acl), SMB_VFS_OP_FCHMOD_ACL, SMB_VFS_LAYER_LOGGER},
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/* Finish VFS operations definition */
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{SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
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};
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static int audit_syslog_facility(vfs_handle_struct *handle)
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{
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/* fix me: let this be configurable by:
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* lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"extd_audit"),"syslog facility",
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* audit_enum_facility,LOG_USER);
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*/
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return LOG_USER;
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}
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static int audit_syslog_priority(vfs_handle_struct *handle)
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{
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/* fix me: let this be configurable by:
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* lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"extd_audit"),"syslog priority",
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* audit_enum_priority,LOG_NOTICE);
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*/
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return LOG_NOTICE;
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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(vfs_handle_struct *handle, connection_struct *conn, const char *svc, const char *user)
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{
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int result;
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openlog("smbd_audit", LOG_PID, audit_syslog_facility(handle));
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syslog(audit_syslog_priority(handle), "connect to service %s by user %s\n",
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svc, user);
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DEBUG(10, ("Connected to service %s as user %s\n",
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svc, user));
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result = SMB_VFS_NEXT_CONNECT(handle, conn, svc, user);
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return result;
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}
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static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn)
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{
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syslog(audit_syslog_priority(handle), "disconnected\n");
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DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
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SMB_VFS_NEXT_DISCONNECT(handle, conn);
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return;
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}
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static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname)
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{
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DIR *result;
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result = SMB_VFS_NEXT_OPENDIR(handle, conn, fname);
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syslog(audit_syslog_priority(handle), "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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DEBUG(1, ("vfs_extd_audit: 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(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
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{
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int result;
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result = SMB_VFS_NEXT_MKDIR(handle, conn, path, mode);
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syslog(audit_syslog_priority(handle), "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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DEBUG(0, ("vfs_extd_audit: 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(vfs_handle_struct *handle, connection_struct *conn, const char *path)
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{
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int result;
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result = SMB_VFS_NEXT_RMDIR(handle, conn, path);
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syslog(audit_syslog_priority(handle), "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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DEBUG(0, ("vfs_extd_audit: 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(vfs_handle_struct *handle, connection_struct *conn, const char *fname, int flags, mode_t mode)
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{
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int result;
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result = SMB_VFS_NEXT_OPEN(handle, conn, fname, flags, mode);
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syslog(audit_syslog_priority(handle), "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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DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
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fname,
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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(vfs_handle_struct *handle, files_struct *fsp, int fd)
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{
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int result;
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result = SMB_VFS_NEXT_CLOSE(handle, fsp, fd);
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syslog(audit_syslog_priority(handle), "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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DEBUG(2, ("vfs_extd_audit: 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(vfs_handle_struct *handle, connection_struct *conn, const char *oldname, const char *newname)
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{
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int result;
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result = SMB_VFS_NEXT_RENAME(handle, conn, oldname, newname);
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syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
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oldname, newname,
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(result < 0) ? "failed: " : "",
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(result < 0) ? strerror(errno) : "");
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DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
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oldname, newname,
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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(vfs_handle_struct *handle, connection_struct *conn, const char *path)
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{
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int result;
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result = SMB_VFS_NEXT_UNLINK(handle, conn, path);
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syslog(audit_syslog_priority(handle), "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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DEBUG(0, ("vfs_extd_audit: 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(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
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{
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int result;
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result = SMB_VFS_NEXT_CHMOD(handle, conn, path, mode);
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syslog(audit_syslog_priority(handle), "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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DEBUG(1, ("vfs_extd_audit: 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(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode)
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{
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int result;
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result = SMB_VFS_NEXT_CHMOD_ACL(handle, conn, path, mode);
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syslog(audit_syslog_priority(handle), "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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DEBUG(1, ("vfs_extd_audit: 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(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
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{
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int result;
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result = SMB_VFS_NEXT_FCHMOD(handle, fsp, fd, mode);
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syslog(audit_syslog_priority(handle), "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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DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
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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(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode)
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{
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int result;
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result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, fd, mode);
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syslog(audit_syslog_priority(handle), "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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DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
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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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NTSTATUS vfs_extd_audit_init(void)
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{
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NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "extd_audit", audit_op_tuples);
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if (!NT_STATUS_IS_OK(ret))
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return ret;
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vfs_extd_audit_debug_level = debug_add_class("extd_audit");
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if (vfs_extd_audit_debug_level == -1) {
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vfs_extd_audit_debug_level = DBGC_VFS;
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DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
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} else {
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DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));
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}
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return ret;
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}
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