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-rw-r--r--source3/include/vfs.h5
-rw-r--r--source3/include/vfs_macros.h3
-rw-r--r--source3/modules/vfs_default.c8
-rw-r--r--source3/modules/vfs_full_audit.c18
-rw-r--r--source3/smbd/vfs.c30
5 files changed, 56 insertions, 8 deletions
diff --git a/source3/include/vfs.h b/source3/include/vfs.h
index 0c0e0938bd..9a736a7ca0 100644
--- a/source3/include/vfs.h
+++ b/source3/include/vfs.h
@@ -221,6 +221,7 @@ typedef enum _vfs_op_type {
SMB_VFS_OP_FILE_ID_CREATE,
SMB_VFS_OP_STREAMINFO,
SMB_VFS_OP_GET_REAL_FILENAME,
+ SMB_VFS_OP_CONNECTPATH,
SMB_VFS_OP_BRL_LOCK_WINDOWS,
SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
SMB_VFS_OP_BRL_CANCEL_WINDOWS,
@@ -402,6 +403,9 @@ struct vfs_ops {
TALLOC_CTX *mem_ctx,
char **found_name);
+ const char *(*connectpath)(struct vfs_handle_struct *handle,
+ const char *filename);
+
NTSTATUS (*brl_lock_windows)(struct vfs_handle_struct *handle,
struct byte_range_lock *br_lck,
struct lock_struct *plock,
@@ -564,6 +568,7 @@ struct vfs_ops {
struct vfs_handle_struct *file_id_create;
struct vfs_handle_struct *streaminfo;
struct vfs_handle_struct *get_real_filename;
+ struct vfs_handle_struct *connectpath;
struct vfs_handle_struct *brl_lock_windows;
struct vfs_handle_struct *brl_unlock_windows;
struct vfs_handle_struct *brl_cancel_windows;
diff --git a/source3/include/vfs_macros.h b/source3/include/vfs_macros.h
index acb158e3a5..0b59f8f3ad 100644
--- a/source3/include/vfs_macros.h
+++ b/source3/include/vfs_macros.h
@@ -88,6 +88,7 @@
#define SMB_VFS_FILE_ID_CREATE(conn, sbuf) ((conn)->vfs.ops.file_id_create((conn)->vfs.handles.file_id_create, (sbuf)))
#define SMB_VFS_STREAMINFO(conn, fsp, fname, mem_ctx, num_streams, streams) ((conn)->vfs.ops.streaminfo((conn)->vfs.handles.streaminfo, (fsp), (fname), (mem_ctx), (num_streams), (streams)))
#define SMB_VFS_GET_REAL_FILENAME(conn, path, name, mem_ctx, found_name) ((conn)->vfs.ops.get_real_filename((conn)->vfs.handles.get_real_filename, (path), (name), (mem_ctx), (found_name)))
+#define SMB_VFS_CONNECTPATH(conn, fname) ((conn)->vfs.ops.connectpath((conn)->vfs.handles.connectpath, (fname)))
#define SMB_VFS_BRL_LOCK_WINDOWS(conn, br_lck, plock, blocking_lock, blr) ((conn)->vfs.ops.brl_lock_windows((conn)->vfs.handles.brl_lock_windows, (br_lck), (plock), (blocking_lock), (blr)))
#define SMB_VFS_BRL_UNLOCK_WINDOWS(conn, msg_ctx, br_lck, plock) ((conn)->vfs.ops.brl_unlock_windows((conn)->vfs.handles.brl_unlock_windows, (msg_ctx), (br_lck), (plock)))
#define SMB_VFS_BRL_CANCEL_WINDOWS(conn, br_lck, plock, blr) ((conn)->vfs.ops.brl_cancel_windows((conn)->vfs.handles.brl_cancel_windows, (br_lck), (plock), (blr)))
@@ -222,6 +223,7 @@
#define SMB_VFS_OPAQUE_FILE_ID_CREATE(conn, sbuf) ((conn)->vfs.ops_opaque.file_id_create((conn)->vfs_opaque.handles.file_id_create, (sbuf)))
#define SMB_VFS_OPAQUE_STREAMINFO(conn, fsp, fname, mem_ctx, num_streams, streams) ((conn)->vfs_opaque.ops.streaminfo((conn)->vfs_opaque.handles.streaminfo, (fsp), (fname), (mem_ctx), (num_streams), (streams)))
#define SMB_VFS_OPAQUE_GET_REAL_FILENAME(conn, path, name, mem_ctx, found_name) ((conn)->vfs_opaque.ops.get_real_filename((conn)->vfs_opaque.handles.get_real_filename, (path), (name), (mem_ctx), (found_name)))
+#define SMB_VFS_OPAQUE_CONNECTPATH(conn, fname) ((conn)->vfs_opaque.ops.connectpath((conn)->vfs_opaque.handles.connectpath, (fname)))
#define SMB_VFS_OPAQUE_BRL_LOCK_WINDOWS(conn, br_lck, plock, blocking_lock, blr) ((conn)->vfs_opaque.ops.brl_lock_windows((conn)->vfs_opaque.handles.brl_lock_windows, (br_lck), (plock), (blocking_lock), (blr)))
#define SMB_VFS_OPAQUE_BRL_UNLOCK_WINDOWS(conn, msg_ctx, br_lck, plock) ((conn)->vfs_opaque.ops.brl_unlock_windows((conn)->vfs_opaque.handles.brl_unlock_windows, (msg_ctx), (br_lck), (plock)))
#define SMB_VFS_OPAQUE_BRL_CANCEL_WINDOWS(conn, br_lck, plock, blr) ((conn)->vfs_opaque.ops.brl_cancel_windows((conn)->vfs_opaque.handles.brl_cancel_windows, (br_lck), (plock), (blr)))
@@ -357,6 +359,7 @@
#define SMB_VFS_NEXT_FILE_ID_CREATE(handle, sbuf) ((handle)->vfs_next.ops.file_id_create((handle)->vfs_next.handles.file_id_create, (sbuf)))
#define SMB_VFS_NEXT_STREAMINFO(handle, fsp, fname, mem_ctx, num_streams, streams) ((handle)->vfs_next.ops.streaminfo((handle)->vfs_next.handles.streaminfo, (fsp), (fname), (mem_ctx), (num_streams), (streams)))
#define SMB_VFS_NEXT_GET_REAL_FILENAME(handle, path, name, mem_ctx, found_name) ((handle)->vfs_next.ops.get_real_filename((handle)->vfs_next.handles.get_real_filename, (path), (name), (mem_ctx), (found_name)))
+#define SMB_VFS_NEXT_CONNECTPATH(conn, fname) ((conn)->vfs_next.ops.connectpath((conn)->vfs_next.handles.connectpath, (fname)))
#define SMB_VFS_NEXT_BRL_LOCK_WINDOWS(handle, br_lck, plock, blocking_lock, blr) ((handle)->vfs_next.ops.brl_lock_windows((handle)->vfs_next.handles.brl_lock_windows, (br_lck), (plock), (blocking_lock), (blr)))
#define SMB_VFS_NEXT_BRL_UNLOCK_WINDOWS(handle, msg_ctx, br_lck, plock) ((handle)->vfs_next.ops.brl_unlock_windows((handle)->vfs_next.handles.brl_unlock_windows, (msg_ctx), (br_lck), (plock)))
#define SMB_VFS_NEXT_BRL_CANCEL_WINDOWS(handle, br_lck, plock, blr) ((handle)->vfs_next.ops.brl_cancel_windows((handle)->vfs_next.handles.brl_cancel_windows, (br_lck), (plock), (blr)))
diff --git a/source3/modules/vfs_default.c b/source3/modules/vfs_default.c
index fe63d5001a..4368dcd7da 100644
--- a/source3/modules/vfs_default.c
+++ b/source3/modules/vfs_default.c
@@ -1128,6 +1128,12 @@ static int vfswrap_get_real_filename(struct vfs_handle_struct *handle,
return -1;
}
+static const char *vfswrap_connectpath(struct vfs_handle_struct *handle,
+ const char *fname)
+{
+ return handle->conn->connectpath;
+}
+
static NTSTATUS vfswrap_brl_lock_windows(struct vfs_handle_struct *handle,
struct byte_range_lock *br_lck,
struct lock_struct *plock,
@@ -1630,6 +1636,8 @@ static vfs_op_tuple vfs_default_ops[] = {
SMB_VFS_LAYER_OPAQUE},
{SMB_VFS_OP(vfswrap_get_real_filename), SMB_VFS_OP_GET_REAL_FILENAME,
SMB_VFS_LAYER_OPAQUE},
+ {SMB_VFS_OP(vfswrap_connectpath), SMB_VFS_OP_CONNECTPATH,
+ SMB_VFS_LAYER_OPAQUE},
{SMB_VFS_OP(vfswrap_brl_lock_windows), SMB_VFS_OP_BRL_LOCK_WINDOWS,
SMB_VFS_LAYER_OPAQUE},
{SMB_VFS_OP(vfswrap_brl_unlock_windows),SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
diff --git a/source3/modules/vfs_full_audit.c b/source3/modules/vfs_full_audit.c
index ebe89ec5fd..bbcb7b3364 100644
--- a/source3/modules/vfs_full_audit.c
+++ b/source3/modules/vfs_full_audit.c
@@ -221,6 +221,8 @@ static int smb_full_audit_get_real_filename(struct vfs_handle_struct *handle,
const char *name,
TALLOC_CTX *mem_ctx,
char **found_name);
+static const char *smb_full_audit_connectpath(vfs_handle_struct *handle,
+ const char *fname);
static NTSTATUS smb_full_audit_brl_lock_windows(struct vfs_handle_struct *handle,
struct byte_range_lock *br_lck,
struct lock_struct *plock,
@@ -483,6 +485,8 @@ static vfs_op_tuple audit_op_tuples[] = {
SMB_VFS_LAYER_LOGGER},
{SMB_VFS_OP(smb_full_audit_get_real_filename), SMB_VFS_OP_GET_REAL_FILENAME,
SMB_VFS_LAYER_LOGGER},
+ {SMB_VFS_OP(smb_full_audit_connectpath), SMB_VFS_OP_CONNECTPATH,
+ SMB_VFS_LAYER_LOGGER},
{SMB_VFS_OP(smb_full_audit_brl_lock_windows), SMB_VFS_OP_BRL_LOCK_WINDOWS,
SMB_VFS_LAYER_LOGGER},
{SMB_VFS_OP(smb_full_audit_brl_unlock_windows), SMB_VFS_OP_BRL_UNLOCK_WINDOWS,
@@ -667,6 +671,7 @@ static struct {
{ SMB_VFS_OP_FILE_ID_CREATE, "file_id_create" },
{ SMB_VFS_OP_STREAMINFO, "streaminfo" },
{ SMB_VFS_OP_GET_REAL_FILENAME, "get_real_filename" },
+ { SMB_VFS_OP_CONNECTPATH, "connectpath" },
{ SMB_VFS_OP_BRL_LOCK_WINDOWS, "brl_lock_windows" },
{ SMB_VFS_OP_BRL_UNLOCK_WINDOWS, "brl_unlock_windows" },
{ SMB_VFS_OP_BRL_CANCEL_WINDOWS, "brl_cancel_windows" },
@@ -1727,6 +1732,19 @@ static int smb_full_audit_get_real_filename(struct vfs_handle_struct *handle,
return result;
}
+static const char *smb_full_audit_connectpath(vfs_handle_struct *handle,
+ const char *fname)
+{
+ const char *result;
+
+ result = SMB_VFS_NEXT_CONNECTPATH(handle, fname);
+
+ do_log(SMB_VFS_OP_CONNECTPATH, result != NULL, handle,
+ "%s", fname);
+
+ return result;
+}
+
static NTSTATUS smb_full_audit_brl_lock_windows(struct vfs_handle_struct *handle,
struct byte_range_lock *br_lck,
struct lock_struct *plock,
diff --git a/source3/smbd/vfs.c b/source3/smbd/vfs.c
index bc6fd18b8e..873e65e4a4 100644
--- a/source3/smbd/vfs.c
+++ b/source3/smbd/vfs.c
@@ -956,14 +956,28 @@ NTSTATUS check_reduced_name(connection_struct *conn, const char *fname)
}
/* Check for widelinks allowed. */
- if (!lp_widelinks(SNUM(conn))
- && (strncmp(conn->connectpath, resolved_name,
- strlen(conn->connectpath)) != 0)) {
- DEBUG(2, ("reduce_name: Bad access attempt: %s is a symlink outside the share path", fname));
- if (free_resolved_name) {
- SAFE_FREE(resolved_name);
- }
- return NT_STATUS_ACCESS_DENIED;
+ if (!lp_widelinks(SNUM(conn))) {
+ const char *conn_rootdir;
+
+ conn_rootdir = SMB_VFS_CONNECTPATH(conn, fname);
+ if (conn_rootdir == NULL) {
+ DEBUG(2, ("check_reduced_name: Could not get conn_rootdir\n"));
+ if (free_resolved_name) {
+ SAFE_FREE(resolved_name);
+ }
+ return NT_STATUS_ACCESS_DENIED;
+ }
+
+ if (strncmp(conn_rootdir, resolved_name,
+ strlen(conn_rootdir)) != 0) {
+ DEBUG(2, ("reduce_name: Bad access attempt: %s is "
+ "a symlink outside the share path",
+ fname));
+ if (free_resolved_name) {
+ SAFE_FREE(resolved_name);
+ }
+ return NT_STATUS_ACCESS_DENIED;
+ }
}
/* Check if we are allowing users to follow symlinks */
generated by cgit (git 2.34.1) at 2024-07-06 01:11:01 +0000