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Issue 2250183003: Make the fuchsia mojo/public repo the source of truth. (Closed) Base URL: https://github.com/domokit/mojo.git@master
Patch Set: Created 4 years, 4 months ago
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1 // Copyright 2014 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 <limits>
6
7 #include "gtest/gtest.h"
8 #include "mojo/public/cpp/bindings/lib/bindings_serialization.h"
9 #include "mojo/public/cpp/bindings/lib/bounds_checker.h"
10 #include "mojo/public/cpp/system/handle.h"
11
12 namespace mojo {
13 namespace test {
14 namespace {
15
16 const void* ToPtr(uintptr_t ptr) {
17 return reinterpret_cast<const void*>(ptr);
18 }
19
20 #if defined(NDEBUG) && !defined(DCHECK_ALWAYS_ON)
21 TEST(BoundsCheckerTest, ConstructorRangeOverflow) {
22 {
23 // Test memory range overflow.
24 internal::BoundsChecker checker(
25 ToPtr(std::numeric_limits<uintptr_t>::max() - 3000), 5000, 0);
26
27 EXPECT_FALSE(checker.IsValidRange(
28 ToPtr(std::numeric_limits<uintptr_t>::max() - 3000), 1));
29 EXPECT_FALSE(checker.ClaimMemory(
30 ToPtr(std::numeric_limits<uintptr_t>::max() - 3000), 1));
31 }
32
33 if (sizeof(size_t) > sizeof(uint32_t)) {
34 // Test handle index range overflow.
35 size_t num_handles =
36 static_cast<size_t>(std::numeric_limits<uint32_t>::max()) + 5;
37 internal::BoundsChecker checker(ToPtr(0), 0, num_handles);
38
39 EXPECT_FALSE(checker.ClaimHandle(Handle(0)));
40 EXPECT_FALSE(
41 checker.ClaimHandle(Handle(std::numeric_limits<uint32_t>::max() - 1)));
42
43 EXPECT_TRUE(
44 checker.ClaimHandle(Handle(internal::kEncodedInvalidHandleValue)));
45 }
46 }
47 #endif
48
49 TEST(BoundsCheckerTest, IsValidRange) {
50 {
51 internal::BoundsChecker checker(ToPtr(1234), 100, 0);
52
53 // Basics.
54 EXPECT_FALSE(checker.IsValidRange(ToPtr(100), 5));
55 EXPECT_FALSE(checker.IsValidRange(ToPtr(1230), 50));
56 EXPECT_TRUE(checker.IsValidRange(ToPtr(1234), 5));
57 EXPECT_TRUE(checker.IsValidRange(ToPtr(1240), 50));
58 EXPECT_TRUE(checker.IsValidRange(ToPtr(1234), 100));
59 EXPECT_FALSE(checker.IsValidRange(ToPtr(1234), 101));
60 EXPECT_FALSE(checker.IsValidRange(ToPtr(1240), 100));
61 EXPECT_FALSE(checker.IsValidRange(ToPtr(1333), 5));
62 EXPECT_FALSE(checker.IsValidRange(ToPtr(2234), 5));
63
64 // ClaimMemory() updates the valid range.
65 EXPECT_TRUE(checker.ClaimMemory(ToPtr(1254), 10));
66
67 EXPECT_FALSE(checker.IsValidRange(ToPtr(1234), 1));
68 EXPECT_FALSE(checker.IsValidRange(ToPtr(1254), 10));
69 EXPECT_FALSE(checker.IsValidRange(ToPtr(1263), 1));
70 EXPECT_FALSE(checker.IsValidRange(ToPtr(1263), 10));
71 EXPECT_TRUE(checker.IsValidRange(ToPtr(1264), 10));
72 EXPECT_TRUE(checker.IsValidRange(ToPtr(1264), 70));
73 EXPECT_FALSE(checker.IsValidRange(ToPtr(1264), 71));
74 }
75
76 {
77 internal::BoundsChecker checker(ToPtr(1234), 100, 0);
78 // Should return false for empty ranges.
79 EXPECT_FALSE(checker.IsValidRange(ToPtr(0), 0));
80 EXPECT_FALSE(checker.IsValidRange(ToPtr(1200), 0));
81 EXPECT_FALSE(checker.IsValidRange(ToPtr(1234), 0));
82 EXPECT_FALSE(checker.IsValidRange(ToPtr(1240), 0));
83 EXPECT_FALSE(checker.IsValidRange(ToPtr(2234), 0));
84 }
85
86 {
87 // The valid memory range is empty.
88 internal::BoundsChecker checker(ToPtr(1234), 0, 0);
89
90 EXPECT_FALSE(checker.IsValidRange(ToPtr(1234), 1));
91 EXPECT_FALSE(checker.IsValidRange(ToPtr(1234), 0));
92 }
93
94 {
95 internal::BoundsChecker checker(
96 ToPtr(std::numeric_limits<uintptr_t>::max() - 2000), 1000, 0);
97
98 // Test overflow.
99 EXPECT_FALSE(checker.IsValidRange(
100 ToPtr(std::numeric_limits<uintptr_t>::max() - 1500), 4000));
101 EXPECT_FALSE(checker.IsValidRange(
102 ToPtr(std::numeric_limits<uintptr_t>::max() - 1500),
103 std::numeric_limits<uint32_t>::max()));
104
105 // This should be fine.
106 EXPECT_TRUE(checker.IsValidRange(
107 ToPtr(std::numeric_limits<uintptr_t>::max() - 1500), 200));
108 }
109 }
110
111 TEST(BoundsCheckerTest, ClaimHandle) {
112 {
113 internal::BoundsChecker checker(ToPtr(0), 0, 10);
114
115 // Basics.
116 EXPECT_TRUE(checker.ClaimHandle(Handle(0)));
117 EXPECT_FALSE(checker.ClaimHandle(Handle(0)));
118
119 EXPECT_TRUE(checker.ClaimHandle(Handle(9)));
120 EXPECT_FALSE(checker.ClaimHandle(Handle(10)));
121
122 // Should fail because it is smaller than the max index that has been
123 // claimed.
124 EXPECT_FALSE(checker.ClaimHandle(Handle(8)));
125
126 // Should return true for invalid handle.
127 EXPECT_TRUE(
128 checker.ClaimHandle(Handle(internal::kEncodedInvalidHandleValue)));
129 EXPECT_TRUE(
130 checker.ClaimHandle(Handle(internal::kEncodedInvalidHandleValue)));
131 }
132
133 {
134 // No handle to claim.
135 internal::BoundsChecker checker(ToPtr(0), 0, 0);
136
137 EXPECT_FALSE(checker.ClaimHandle(Handle(0)));
138
139 // Should still return true for invalid handle.
140 EXPECT_TRUE(
141 checker.ClaimHandle(Handle(internal::kEncodedInvalidHandleValue)));
142 }
143
144 {
145 // Test the case that |num_handles| is the same value as
146 // |internal::kEncodedInvalidHandleValue|.
147 EXPECT_EQ(internal::kEncodedInvalidHandleValue,
148 std::numeric_limits<uint32_t>::max());
149 internal::BoundsChecker checker(
150 ToPtr(0), 0, std::numeric_limits<uint32_t>::max());
151
152 EXPECT_TRUE(
153 checker.ClaimHandle(Handle(std::numeric_limits<uint32_t>::max() - 1)));
154 EXPECT_FALSE(
155 checker.ClaimHandle(Handle(std::numeric_limits<uint32_t>::max() - 1)));
156 EXPECT_FALSE(checker.ClaimHandle(Handle(0)));
157
158 // Should still return true for invalid handle.
159 EXPECT_TRUE(
160 checker.ClaimHandle(Handle(internal::kEncodedInvalidHandleValue)));
161 }
162 }
163
164 TEST(BoundsCheckerTest, ClaimMemory) {
165 {
166 internal::BoundsChecker checker(ToPtr(1000), 2000, 0);
167
168 // Basics.
169 EXPECT_FALSE(checker.ClaimMemory(ToPtr(500), 100));
170 EXPECT_FALSE(checker.ClaimMemory(ToPtr(800), 300));
171 EXPECT_TRUE(checker.ClaimMemory(ToPtr(1000), 100));
172 EXPECT_FALSE(checker.ClaimMemory(ToPtr(1099), 100));
173 EXPECT_TRUE(checker.ClaimMemory(ToPtr(1100), 200));
174 EXPECT_FALSE(checker.ClaimMemory(ToPtr(2000), 1001));
175 EXPECT_TRUE(checker.ClaimMemory(ToPtr(2000), 500));
176 EXPECT_FALSE(checker.ClaimMemory(ToPtr(2000), 500));
177 EXPECT_FALSE(checker.ClaimMemory(ToPtr(1400), 100));
178 EXPECT_FALSE(checker.ClaimMemory(ToPtr(3000), 1));
179 EXPECT_TRUE(checker.ClaimMemory(ToPtr(2500), 500));
180 }
181
182 {
183 // No memory to claim.
184 internal::BoundsChecker checker(ToPtr(10000), 0, 0);
185
186 EXPECT_FALSE(checker.ClaimMemory(ToPtr(10000), 1));
187 EXPECT_FALSE(checker.ClaimMemory(ToPtr(10000), 0));
188 }
189
190 {
191 internal::BoundsChecker checker(
192 ToPtr(std::numeric_limits<uintptr_t>::max() - 1000), 500, 0);
193
194 // Test overflow.
195 EXPECT_FALSE(checker.ClaimMemory(
196 ToPtr(std::numeric_limits<uintptr_t>::max() - 750), 4000));
197 EXPECT_FALSE(
198 checker.ClaimMemory(ToPtr(std::numeric_limits<uintptr_t>::max() - 750),
199 std::numeric_limits<uint32_t>::max()));
200
201 // This should be fine.
202 EXPECT_TRUE(checker.ClaimMemory(
203 ToPtr(std::numeric_limits<uintptr_t>::max() - 750), 200));
204 }
205 }
206
207 } // namespace
208 } // namespace test
209 } // namespace mojo
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