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Diffstat (limited to 'source3/modules/vfs_extd_audit.c')
-rw-r--r--source3/modules/vfs_extd_audit.c370
1 files changed, 370 insertions, 0 deletions
diff --git a/source3/modules/vfs_extd_audit.c b/source3/modules/vfs_extd_audit.c
new file mode 100644
index 0000000000..7516cba1d3
--- /dev/null
+++ b/source3/modules/vfs_extd_audit.c
@@ -0,0 +1,370 @@
+/*
+ * 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) John H Terpstra, 2003
+ * Copyright (C) Stefan (metze) Metzmacher, 2003
+ *
+ * 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * 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, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#include "includes.h"
+
+static int vfs_extd_audit_debug_level = DBGC_VFS;
+
+#undef DBGC_CLASS
+#define DBGC_CLASS vfs_extd_audit_debug_level
+
+/* Function prototypes */
+
+static int audit_connect(vfs_handle_struct *handle, const char *svc, const char *user);
+static void audit_disconnect(vfs_handle_struct *handle);
+static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr);
+static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode);
+static int audit_rmdir(vfs_handle_struct *handle, const char *path);
+static int audit_open(vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode);
+static int audit_close(vfs_handle_struct *handle, files_struct *fsp);
+static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname);
+static int audit_unlink(vfs_handle_struct *handle, const char *path);
+static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode);
+static int audit_chmod_acl(vfs_handle_struct *handle, const char *name, mode_t mode);
+static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode);
+static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode);
+
+/* VFS operations */
+
+static vfs_op_tuple audit_op_tuples[] = {
+
+ /* Disk operations */
+
+ {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 */
+
+ {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 */
+
+ {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 */
+
+ {SMB_VFS_OP(NULL), SMB_VFS_OP_NOOP, SMB_VFS_LAYER_NOOP}
+};
+
+
+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), "extd_audit", "facility", enum_log_facilities, LOG_USER);
+
+ return facility;
+}
+
+
+static int audit_syslog_priority(vfs_handle_struct *handle)
+{
+ 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), "extd_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(vfs_handle_struct *handle, const char *svc, const char *user)
+{
+ 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);
+ DEBUG(10, ("Connected to service %s as user %s\n",
+ svc, user));
+
+ result = SMB_VFS_NEXT_CONNECT(handle, svc, user);
+
+ return result;
+}
+
+static void audit_disconnect(vfs_handle_struct *handle)
+{
+ syslog(audit_syslog_priority(handle), "disconnected\n");
+ DEBUG(10, ("Disconnected from VFS module extd_audit\n"));
+ SMB_VFS_NEXT_DISCONNECT(handle);
+
+ return;
+}
+
+static SMB_STRUCT_DIR *audit_opendir(vfs_handle_struct *handle, const char *fname, const char *mask, uint32 attr)
+{
+ SMB_STRUCT_DIR *result;
+
+ result = SMB_VFS_NEXT_OPENDIR(handle, fname, mask, attr);
+
+ syslog(audit_syslog_priority(handle), "opendir %s %s%s\n",
+ fname,
+ (result == NULL) ? "failed: " : "",
+ (result == NULL) ? strerror(errno) : "");
+ DEBUG(1, ("vfs_extd_audit: opendir %s %s %s\n",
+ fname,
+ (result == NULL) ? "failed: " : "",
+ (result == NULL) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_mkdir(vfs_handle_struct *handle, const char *path, mode_t mode)
+{
+ 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) : "");
+ DEBUG(0, ("vfs_extd_audit: mkdir %s %s %s\n",
+ path,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_rmdir(vfs_handle_struct *handle, const char *path)
+{
+ int result;
+
+ 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) : "");
+ DEBUG(0, ("vfs_extd_audit: rmdir %s %s %s\n",
+ path,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_open(vfs_handle_struct *handle, const char *fname, files_struct *fsp, int flags, mode_t mode)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_OPEN(handle, fname, fsp, flags, mode);
+
+ 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: " : "",
+ (result < 0) ? strerror(errno) : "");
+ DEBUG(2, ("vfs_extd_audit: open %s %s %s\n",
+ fname,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_close(vfs_handle_struct *handle, files_struct *fsp)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_CLOSE(handle, fsp);
+
+ syslog(audit_syslog_priority(handle), "close fd %d %s%s\n",
+ fsp->fh->fd,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : "");
+ DEBUG(2, ("vfs_extd_audit: close fd %d %s %s\n",
+ fsp->fh->fd,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_rename(vfs_handle_struct *handle, const char *oldname, const char *newname)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_RENAME(handle, oldname, newname);
+
+ syslog(audit_syslog_priority(handle), "rename %s -> %s %s%s\n",
+ oldname, newname,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : "");
+ DEBUG(1, ("vfs_extd_audit: rename old: %s newname: %s %s %s\n",
+ oldname, newname,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_unlink(vfs_handle_struct *handle, const char *path)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_UNLINK(handle, path);
+
+ syslog(audit_syslog_priority(handle), "unlink %s %s%s\n",
+ path,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : "");
+ DEBUG(0, ("vfs_extd_audit: unlink %s %s %s\n",
+ path,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_chmod(vfs_handle_struct *handle, const char *path, mode_t mode)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_CHMOD(handle, path, mode);
+
+ syslog(audit_syslog_priority(handle), "chmod %s mode 0x%x %s%s\n",
+ path, mode,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : "");
+ DEBUG(1, ("vfs_extd_audit: chmod %s mode 0x%x %s %s\n",
+ path, mode,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_chmod_acl(vfs_handle_struct *handle, const char *path, mode_t mode)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_CHMOD_ACL(handle, path, mode);
+
+ syslog(audit_syslog_priority(handle), "chmod_acl %s mode 0x%x %s%s\n",
+ path, mode,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : "");
+ DEBUG(1, ("vfs_extd_audit: chmod_acl %s mode 0x%x %s %s\n",
+ path, mode,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_fchmod(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_FCHMOD(handle, fsp, 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) : "");
+ DEBUG(1, ("vfs_extd_audit: fchmod %s mode 0x%x %s %s",
+ fsp->fsp_name, mode,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+static int audit_fchmod_acl(vfs_handle_struct *handle, files_struct *fsp, mode_t mode)
+{
+ int result;
+
+ result = SMB_VFS_NEXT_FCHMOD_ACL(handle, fsp, mode);
+
+ 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) : "");
+ DEBUG(1, ("vfs_extd_audit: fchmod_acl %s mode 0x%x %s %s",
+ fsp->fsp_name, mode,
+ (result < 0) ? "failed: " : "",
+ (result < 0) ? strerror(errno) : ""));
+
+ return result;
+}
+
+NTSTATUS vfs_extd_audit_init(void);
+NTSTATUS vfs_extd_audit_init(void)
+{
+ NTSTATUS ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "extd_audit", audit_op_tuples);
+
+ if (!NT_STATUS_IS_OK(ret))
+ return ret;
+
+ vfs_extd_audit_debug_level = debug_add_class("extd_audit");
+ if (vfs_extd_audit_debug_level == -1) {
+ vfs_extd_audit_debug_level = DBGC_VFS;
+ DEBUG(0, ("vfs_extd_audit: Couldn't register custom debugging class!\n"));
+ } else {
+ DEBUG(10, ("vfs_extd_audit: Debug class number of 'extd_audit': %d\n", vfs_extd_audit_debug_level));
+ }
+
+ return ret;
+}
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