1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
|
// Copyright (c) 2011, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// safe_readlink_unittest.cc: Unit tests for google_breakpad::SafeReadLink.
#include "breakpad_googletest_includes.h"
#include "common/linux/safe_readlink.h"
using google_breakpad::SafeReadLink;
TEST(SafeReadLinkTest, ZeroBufferSize) {
char buffer[1];
EXPECT_FALSE(SafeReadLink("/proc/self/exe", buffer, 0));
}
TEST(SafeReadLinkTest, BufferSizeTooSmall) {
char buffer[1];
EXPECT_FALSE(SafeReadLink("/proc/self/exe", buffer, 1));
}
TEST(SafeReadLinkTest, BoundaryBufferSize) {
char buffer[PATH_MAX];
EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer, sizeof(buffer)));
size_t path_length = strlen(buffer);
EXPECT_LT(0U, path_length);
EXPECT_GT(sizeof(buffer), path_length);
// Buffer size equals to the expected path length plus 1 for the NULL byte.
char buffer2[PATH_MAX];
EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer2, path_length + 1));
EXPECT_EQ(path_length, strlen(buffer2));
EXPECT_EQ(0, strncmp(buffer, buffer2, PATH_MAX));
// Buffer size equals to the expected path length.
EXPECT_FALSE(SafeReadLink("/proc/self/exe", buffer, path_length));
}
TEST(SafeReadLinkTest, NonexistentPath) {
char buffer[PATH_MAX];
EXPECT_FALSE(SafeReadLink("nonexistent_path", buffer, sizeof(buffer)));
}
TEST(SafeReadLinkTest, NonSymbolicLinkPath) {
char actual_path[PATH_MAX];
EXPECT_TRUE(SafeReadLink("/proc/self/exe", actual_path, sizeof(actual_path)));
char buffer[PATH_MAX];
EXPECT_FALSE(SafeReadLink(actual_path, buffer, sizeof(buffer)));
}
TEST(SafeReadLinkTest, DeduceBufferSizeFromCharArray) {
char buffer[PATH_MAX];
char* buffer_pointer = buffer;
EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer_pointer, sizeof(buffer)));
size_t path_length = strlen(buffer);
// Use the template version of SafeReadLink to deduce the buffer size
// from the char array.
char buffer2[PATH_MAX];
EXPECT_TRUE(SafeReadLink("/proc/self/exe", buffer2));
EXPECT_EQ(path_length, strlen(buffer2));
EXPECT_EQ(0, strncmp(buffer, buffer2, PATH_MAX));
}
|
