1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ipc/ipc_message_utils.h"
6
7#include "base/files/file_path.h"
8#include "ipc/ipc_message.h"
9#include "testing/gtest/include/gtest/gtest.h"
10
11namespace IPC {
12namespace {
13
14// Tests nesting of messages as parameters to other messages.
15TEST(IPCMessageUtilsTest, NestedMessages) {
16  int32 nested_routing = 12;
17  uint32 nested_type = 78;
18  int nested_content = 456789;
19  Message::PriorityValue nested_priority = Message::PRIORITY_HIGH;
20  Message nested_msg(nested_routing, nested_type, nested_priority);
21  nested_msg.set_sync();
22  ParamTraits<int>::Write(&nested_msg, nested_content);
23
24  // Outer message contains the nested one as its parameter.
25  int32 outer_routing = 91;
26  uint32 outer_type = 88;
27  Message::PriorityValue outer_priority = Message::PRIORITY_NORMAL;
28  Message outer_msg(outer_routing, outer_type, outer_priority);
29  ParamTraits<Message>::Write(&outer_msg, nested_msg);
30
31  // Read back the nested message.
32  PickleIterator iter(outer_msg);
33  IPC::Message result_msg;
34  ASSERT_TRUE(ParamTraits<Message>::Read(&outer_msg, &iter, &result_msg));
35
36  // Verify nested message headers.
37  EXPECT_EQ(nested_msg.routing_id(), result_msg.routing_id());
38  EXPECT_EQ(nested_msg.type(), result_msg.type());
39  EXPECT_EQ(nested_msg.priority(), result_msg.priority());
40  EXPECT_EQ(nested_msg.flags(), result_msg.flags());
41
42  // Verify nested message content
43  PickleIterator nested_iter(nested_msg);
44  int result_content = 0;
45  ASSERT_TRUE(ParamTraits<int>::Read(&nested_msg, &nested_iter,
46                                     &result_content));
47  EXPECT_EQ(nested_content, result_content);
48
49  // Try reading past the ends for both messages and make sure it fails.
50  IPC::Message dummy;
51  ASSERT_FALSE(ParamTraits<Message>::Read(&outer_msg, &iter, &dummy));
52  ASSERT_FALSE(ParamTraits<int>::Read(&nested_msg, &nested_iter,
53                                      &result_content));
54}
55
56// Tests that detection of various bad parameters is working correctly.
57TEST(IPCMessageUtilsTest, ParameterValidation) {
58  base::FilePath::StringType ok_string(FILE_PATH_LITERAL("hello"), 5);
59  base::FilePath::StringType bad_string(FILE_PATH_LITERAL("hel\0o"), 5);
60
61  // Change this if ParamTraits<FilePath>::Write() changes.
62  IPC::Message message;
63  ParamTraits<base::FilePath::StringType>::Write(&message, ok_string);
64  ParamTraits<base::FilePath::StringType>::Write(&message, bad_string);
65
66  PickleIterator iter(message);
67  base::FilePath ok_path;
68  base::FilePath bad_path;
69  ASSERT_TRUE(ParamTraits<base::FilePath>::Read(&message, &iter, &ok_path));
70  ASSERT_FALSE(ParamTraits<base::FilePath>::Read(&message, &iter, &bad_path));
71}
72
73}  // namespace
74}  // namespace IPC
75