diff options
Diffstat (limited to 'source/modules/vfs_audit.c')
| -rw-r--r-- | source/modules/vfs_audit.c | 232 |
1 files changed, 118 insertions, 114 deletions
diff --git a/source/modules/vfs_audit.c b/source/modules/vfs_audit.c index 4f9dc1b1e40..550d918b43c 100644 --- a/source/modules/vfs_audit.c +++ b/source/modules/vfs_audit.c @@ -2,8 +2,9 @@ * 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 @@ -20,118 +21,111 @@ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -#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 + +#include "includes.h" + +#undef DBGC_CLASS +#define DBGC_CLASS DBGC_VFS /* 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); +static int audit_connect(vfs_handle_struct *handle, connection_struct *conn, const char *svc, const char *user); +static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn); +static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname); +static int audit_mkdir(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode); +static int audit_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path); +static int audit_open(vfs_handle_struct *handle, connection_struct *conn, const char *fname, int flags, mode_t mode); +static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd); +static int audit_rename(vfs_handle_struct *handle, connection_struct *conn, const char *old, const char *new); +static int audit_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path); +static int audit_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode); +static int audit_chmod_acl(vfs_handle_struct *handle, connection_struct *conn, const char *name, mode_t mode); +static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, int fd, mode_t mode); +static int audit_fchmod_acl(vfs_handle_struct *handle, 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[] = { +static vfs_op_tuple audit_op_tuples[] = { /* Disk operations */ - {audit_connect, SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER}, - {audit_disconnect, SMB_VFS_OP_DISCONNECT, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_connect), SMB_VFS_OP_CONNECT, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(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}, + {SMB_VFS_OP(audit_opendir), SMB_VFS_OP_OPENDIR, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_mkdir), SMB_VFS_OP_MKDIR, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(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}, + {SMB_VFS_OP(audit_open), SMB_VFS_OP_OPEN, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_close), SMB_VFS_OP_CLOSE, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_rename), SMB_VFS_OP_RENAME, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_unlink), SMB_VFS_OP_UNLINK, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_chmod), SMB_VFS_OP_CHMOD, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_fchmod), SMB_VFS_OP_FCHMOD, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(audit_chmod_acl), SMB_VFS_OP_CHMOD_ACL, SMB_VFS_LAYER_LOGGER}, + {SMB_VFS_OP(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} + {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP} }; -/* VFS initialisation function. Return vfs_op_tuple array back to SAMBA. */ -static vfs_op_tuple *audit_init(const struct vfs_ops *def_vfs_ops, - struct smb_vfs_handle_struct *vfs_handle) +static int audit_syslog_facility(vfs_handle_struct *handle) { - memcpy(&default_vfs_ops, def_vfs_ops, sizeof(struct vfs_ops)); - - audit_handle = vfs_handle; + /* fix me: let this be configurable by: + * lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"audit"),"syslog facility", + * audit_enum_facility,LOG_USER); + */ + return LOG_USER; +} - openlog("smbd_audit", LOG_PID, SYSLOG_FACILITY); - syslog(SYSLOG_PRIORITY, "VFS_INIT: vfs_ops loaded\n"); - return audit_ops; + +static int audit_syslog_priority(vfs_handle_struct *handle) +{ + /* fix me: let this be configurable by: + * lp_param_enum(SNUM(handle->conn),(handle->param?handle->param:"audit"),"syslog priority", + * audit_enum_priority,LOG_NOTICE); + */ + return LOG_NOTICE; } /* 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, connection_struct *conn, const char *svc, const char *user) { - syslog(SYSLOG_PRIORITY, "connect to service %s by user %s\n", + int 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); + result = SMB_VFS_NEXT_CONNECT(handle, conn, svc, user); + + return result; } -static void audit_disconnect(struct connection_struct *conn) +static void audit_disconnect(vfs_handle_struct *handle, connection_struct *conn) { - syslog(SYSLOG_PRIORITY, "disconnected\n"); - default_vfs_ops.disconnect(conn); + syslog(audit_syslog_priority(handle), "disconnected\n"); + SMB_VFS_NEXT_DISCONNECT(handle, conn); + + return; } -static DIR *audit_opendir(struct connection_struct *conn, const char *fname) +static DIR *audit_opendir(vfs_handle_struct *handle, connection_struct *conn, const char *fname) { - DIR *result = default_vfs_ops.opendir(conn, fname); + DIR *result; + + result = SMB_VFS_NEXT_OPENDIR(handle, conn, fname); - 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) : ""); @@ -139,11 +133,13 @@ static DIR *audit_opendir(struct connection_struct *conn, const char *fname) return result; } -static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t mode) +static int audit_mkdir(vfs_handle_struct *handle, connection_struct *conn, 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, conn, path, mode); + + syslog(audit_syslog_priority(handle), "mkdir %s %s%s\n", path, (result < 0) ? "failed: " : "", (result < 0) ? strerror(errno) : ""); @@ -151,11 +147,13 @@ static int audit_mkdir(struct connection_struct *conn, const char *path, mode_t return result; } -static int audit_rmdir(struct connection_struct *conn, const char *path) +static int audit_rmdir(vfs_handle_struct *handle, connection_struct *conn, const char *path) { - int result = default_vfs_ops.rmdir(conn, path); + int result; + + result = SMB_VFS_NEXT_RMDIR(handle, conn, path); - syslog(SYSLOG_PRIORITY, "rmdir %s %s%s\n", + syslog(audit_syslog_priority(handle), "rmdir %s %s%s\n", path, (result < 0) ? "failed: " : "", (result < 0) ? strerror(errno) : ""); @@ -163,11 +161,13 @@ static int audit_rmdir(struct connection_struct *conn, const char *path) 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, connection_struct *conn, const char *fname, int flags, mode_t mode) { - int result = default_vfs_ops.open(conn, fname, flags, mode); + int result; + + result = SMB_VFS_NEXT_OPEN(handle, conn, fname, flags, mode); - syslog(SYSLOG_PRIORITY, "open %s (fd %d) %s%s%s\n", + syslog(audit_syslog_priority(handle), "open %s (fd %d) %s%s%s\n", fname, result, ((flags & O_WRONLY) || (flags & O_RDWR)) ? "for writing " : "", (result < 0) ? "failed: " : "", @@ -176,11 +176,13 @@ static int audit_open(struct connection_struct *conn, const char *fname, int fla return result; } -static int audit_close(struct files_struct *fsp, int fd) +static int audit_close(vfs_handle_struct *handle, files_struct *fsp, int fd) { - int result = default_vfs_ops.close(fsp, fd); + int result; + + result = SMB_VFS_NEXT_CLOSE(handle, fsp, fd); - syslog(SYSLOG_PRIORITY, "close fd %d %s%s\n", + syslog(audit_syslog_priority(handle), "close fd %d %s%s\n", fd, (result < 0) ? "failed: " : "", (result < 0) ? strerror(errno) : ""); @@ -188,11 +190,13 @@ static int audit_close(struct files_struct *fsp, int fd) return result; } -static int audit_rename(struct connection_struct *conn, const char *old, const char *new) +static int audit_rename(vfs_handle_struct *handle, connection_struct *conn, const char *old, const char *new) { - int result = default_vfs_ops.rename(conn, old, new); + int result; + + result = SMB_VFS_NEXT_RENAME(handle, conn, old, new); - syslog(SYSLOG_PRIORITY, "rename %s -> %s %s%s\n", + syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n", old, new, (result < 0) ? "failed: " : "", (result < 0) ? strerror(errno) : ""); @@ -200,11 +204,13 @@ static int audit_rename(struct connection_struct *conn, const char *old, const c return result; } -static int audit_unlink(struct connection_struct *conn, const char *path) +static int audit_unlink(vfs_handle_struct *handle, connection_struct *conn, const char *path) { - int result = default_vfs_ops.unlink(conn, path); + int result; + + result = SMB_VFS_NEXT_UNLINK(handle, conn, path); - syslog(SYSLOG_PRIORITY, "unlink %s %s%s\n", + syslog(audit_syslog_priority(handle), "unlink %s %s%s\n", path, (result < 0) ? "failed: " : "", (result < 0) ? strerror(errno) : ""); @@ -212,11 +218,13 @@ static int audit_unlink(struct connection_struct *conn, const char *path) return result; } -static int audit_chmod(struct connection_struct *conn, const char *path, mode_t mode) +static int audit_chmod(vfs_handle_struct *handle, connection_struct *conn, const char *path, mode_t mode) { - int result = default_vfs_ops.chmod(conn, path, mode); + int result; + + result = SMB_VFS_NEXT_CHMOD(handle, conn, 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) : ""); @@ -224,16 +232,13 @@ static int audit_chmod(struct connection_struct *conn, const char *path, mode_t 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, connection_struct *conn, const char *path, mode_t mode) { int result; - if ( !default_vfs_ops.chmod_acl ) - return 0; + result = SMB_VFS_NEXT_CHMOD_ACL(handle, conn, 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) : ""); @@ -241,11 +246,13 @@ static int audit_chmod_acl(struct connection_struct *conn, const char *path, mod 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, int fd, mode_t mode) { - int result = default_vfs_ops.fchmod(fsp, fd, mode); + int result; - syslog(SYSLOG_PRIORITY, "fchmod %s mode 0x%x %s%s\n", + result = SMB_VFS_NEXT_FCHMOD(handle, fsp, fd, mode); + + syslog(audit_syslog_priority(handle), "fchmod %s mode 0x%x %s%s\n", fsp->fsp_name, mode, (result < 0) ? "failed: " : "", (result < 0) ? strerror(errno) : ""); @@ -253,16 +260,13 @@ static int audit_fchmod(struct files_struct *fsp, int fd, mode_t mode) 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, int fd, mode_t mode) { int result; - if ( !default_vfs_ops.fchmod_acl ) - return 0; - - result = default_vfs_ops.fchmod_acl(fsp, fd, mode); + result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, fd, mode); - syslog(SYSLOG_PRIORITY, "fchmod_acl %s mode 0x%x %s%s\n", + syslog(audit_syslog_priority(handle), "fchmod_acl %s mode 0x%x %s%s\n", fsp->fsp_name, mode, (result < 0) ? "failed: " : "", (result < 0) ? strerror(errno) : ""); @@ -272,5 +276,5 @@ static int audit_fchmod_acl(struct files_struct *fsp, int fd, mode_t mode) NTSTATUS vfs_audit_init(void) { - return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit", audit_init); + return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "audit", audit_op_tuples); } |