torture/ioctl: add range overflow QAR test

Issue a QAR request with an offset and length that generate an integer
(uint64_t) overflow when summed together. This should result in an
NT_STATUS_INVALID_PARAMETER response, as confirmed against Windows
Server 2012 & 2008.

Signed-off-by: David Disseldorp <ddiss@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>

Autobuild-User(master): Jeremy Allison <jra@samba.org>
Autobuild-Date(master): Tue Mar 10 00:02:18 CET 2015 on sn-devel-104

1 files changed, 51 insertions, 0 deletions

diff --git a/source4/torture/smb2/ioctl.c b/source4/torture/smb2/ioctl.c
index 5067d52016..43f98be195 100644
--- a/source4/torture/smb2/ioctl.c
+++ b/source4/torture/smb2/ioctl.c
@@ -4596,6 +4596,55 @@ static bool test_ioctl_sparse_qar_multi(struct torture_context *torture,
 	return true;
 }
 
+static bool test_ioctl_sparse_qar_overflow(struct torture_context *torture,
+					   struct smb2_tree *tree)
+{
+	struct smb2_handle fh;
+	union smb_ioctl ioctl;
+	struct file_alloced_range_buf far_buf;
+	NTSTATUS status;
+	enum ndr_err_code ndr_ret;
+	TALLOC_CTX *tmp_ctx = talloc_new(tree);
+	bool ok;
+
+	ok = test_setup_create_fill(torture, tree, tmp_ctx,
+				    FNAME, &fh, 1024, SEC_RIGHTS_FILE_ALL,
+				    FILE_ATTRIBUTE_NORMAL);
+	torture_assert(torture, ok, "setup file");
+
+	status = test_ioctl_sparse_fs_supported(torture, tree, tmp_ctx, &fh,
+						&ok);
+	torture_assert_ntstatus_ok(torture, status, "SMB2_GETINFO_FS");
+	if (!ok) {
+		smb2_util_close(tree, fh);
+		torture_skip(torture, "Sparse files not supported\n");
+	}
+
+	/* no allocated ranges, no space for range response, should pass */
+	ZERO_STRUCT(ioctl);
+	ioctl.smb2.level = RAW_IOCTL_SMB2;
+	ioctl.smb2.in.file.handle = fh;
+	ioctl.smb2.in.function = FSCTL_QUERY_ALLOCATED_RANGES;
+	ioctl.smb2.in.max_response_size = 1024;
+	ioctl.smb2.in.flags = SMB2_IOCTL_FLAG_IS_FSCTL;
+
+	/* off + length wraps around to 511 */
+	far_buf.file_off = 512;
+	far_buf.len = (uint64_t)0xffffffffffffffff;
+	ndr_ret = ndr_push_struct_blob(&ioctl.smb2.in.out, tmp_ctx,
+				       &far_buf,
+			(ndr_push_flags_fn_t)ndr_push_file_alloced_range_buf);
+	torture_assert_ndr_success(torture, ndr_ret, "push far ndr buf");
+
+	status = smb2_ioctl(tree, tmp_ctx, &ioctl.smb2);
+	torture_assert_ntstatus_equal(torture, status,
+				      NT_STATUS_INVALID_PARAMETER,
+				      "FSCTL_QUERY_ALLOCATED_RANGES overflow");
+
+	return true;
+}
+
+
 /*
  * basic testing of SMB2 ioctls
  */
@@ -4695,6 +4744,8 @@ struct torture_suite *torture_smb2_ioctl_init(void)
 				     test_ioctl_sparse_qar_ob1);
 	torture_suite_add_1smb2_test(suite, "sparse_qar_multi",
 				     test_ioctl_sparse_qar_multi);
+	torture_suite_add_1smb2_test(suite, "sparse_qar_overflow",
+				     test_ioctl_sparse_qar_overflow);
 
 	suite->description = talloc_strdup(suite, "SMB2-IOCTL tests");