1 // Copyright (c) 2013 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 "breakpad_googletest_includes.h"
6 #include "common/using_std_string.h"
7 #include "google_breakpad/processor/proc_maps_linux.h"
8
9 namespace {
10
TEST(ProcMapsTest,Empty)11 TEST(ProcMapsTest, Empty) {
12 std::vector<google_breakpad::MappedMemoryRegion> regions;
13 EXPECT_TRUE(ParseProcMaps("", ®ions));
14 EXPECT_EQ(0u, regions.size());
15 }
16
TEST(ProcMapsTest,NoSpaces)17 TEST(ProcMapsTest, NoSpaces) {
18 static const char kNoSpaces[] =
19 "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/cat\n";
20
21 std::vector<google_breakpad::MappedMemoryRegion> regions;
22 ASSERT_TRUE(ParseProcMaps(kNoSpaces, ®ions));
23 ASSERT_EQ(1u, regions.size());
24
25 EXPECT_EQ(0x00400000u, regions[0].start);
26 EXPECT_EQ(0x0040b000u, regions[0].end);
27 EXPECT_EQ(0x00002200u, regions[0].offset);
28 EXPECT_EQ("/bin/cat", regions[0].path);
29 }
30
TEST(ProcMapsTest,Spaces)31 TEST(ProcMapsTest, Spaces) {
32 static const char kSpaces[] =
33 "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/space cat\n";
34
35 std::vector<google_breakpad::MappedMemoryRegion> regions;
36 ASSERT_TRUE(ParseProcMaps(kSpaces, ®ions));
37 ASSERT_EQ(1u, regions.size());
38
39 EXPECT_EQ(0x00400000u, regions[0].start);
40 EXPECT_EQ(0x0040b000u, regions[0].end);
41 EXPECT_EQ(0x00002200u, regions[0].offset);
42 EXPECT_EQ("/bin/space cat", regions[0].path);
43 }
44
TEST(ProcMapsTest,NoNewline)45 TEST(ProcMapsTest, NoNewline) {
46 static const char kNoSpaces[] =
47 "00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/cat";
48
49 std::vector<google_breakpad::MappedMemoryRegion> regions;
50 ASSERT_FALSE(ParseProcMaps(kNoSpaces, ®ions));
51 }
52
TEST(ProcMapsTest,NoPath)53 TEST(ProcMapsTest, NoPath) {
54 static const char kNoPath[] =
55 "00400000-0040b000 rw-p 00000000 00:00 0 \n";
56
57 std::vector<google_breakpad::MappedMemoryRegion> regions;
58 ASSERT_TRUE(ParseProcMaps(kNoPath, ®ions));
59 ASSERT_EQ(1u, regions.size());
60
61 EXPECT_EQ(0x00400000u, regions[0].start);
62 EXPECT_EQ(0x0040b000u, regions[0].end);
63 EXPECT_EQ(0x00000000u, regions[0].offset);
64 EXPECT_EQ("", regions[0].path);
65 }
66
TEST(ProcMapsTest,Heap)67 TEST(ProcMapsTest, Heap) {
68 static const char kHeap[] =
69 "022ac000-022cd000 rw-p 00000000 00:00 0 [heap]\n";
70
71 std::vector<google_breakpad::MappedMemoryRegion> regions;
72 ASSERT_TRUE(ParseProcMaps(kHeap, ®ions));
73 ASSERT_EQ(1u, regions.size());
74
75 EXPECT_EQ(0x022ac000u, regions[0].start);
76 EXPECT_EQ(0x022cd000u, regions[0].end);
77 EXPECT_EQ(0x00000000u, regions[0].offset);
78 EXPECT_EQ("[heap]", regions[0].path);
79 }
80
81 #if defined(ARCH_CPU_32_BITS)
TEST(ProcMapsTest,Stack32)82 TEST(ProcMapsTest, Stack32) {
83 static const char kStack[] =
84 "beb04000-beb25000 rw-p 00000000 00:00 0 [stack]\n";
85
86 std::vector<google_breakpad::MappedMemoryRegion> regions;
87 ASSERT_TRUE(ParseProcMaps(kStack, ®ions));
88 ASSERT_EQ(1u, regions.size());
89
90 EXPECT_EQ(0xbeb04000u, regions[0].start);
91 EXPECT_EQ(0xbeb25000u, regions[0].end);
92 EXPECT_EQ(0x00000000u, regions[0].offset);
93 EXPECT_EQ("[stack]", regions[0].path);
94 }
95 #elif defined(ARCH_CPU_64_BITS)
TEST(ProcMapsTest,Stack64)96 TEST(ProcMapsTest, Stack64) {
97 static const char kStack[] =
98 "7fff69c5b000-7fff69c7d000 rw-p 00000000 00:00 0 [stack]\n";
99
100 std::vector<google_breakpad::MappedMemoryRegion> regions;
101 ASSERT_TRUE(ParseProcMaps(kStack, ®ions));
102 ASSERT_EQ(1u, regions.size());
103
104 EXPECT_EQ(0x7fff69c5b000u, regions[0].start);
105 EXPECT_EQ(0x7fff69c7d000u, regions[0].end);
106 EXPECT_EQ(0x00000000u, regions[0].offset);
107 EXPECT_EQ("[stack]", regions[0].path);
108 }
109 #endif
110
TEST(ProcMapsTest,Multiple)111 TEST(ProcMapsTest, Multiple) {
112 static const char kMultiple[] =
113 "00400000-0040b000 r-xp 00000000 fc:00 794418 /bin/cat\n"
114 "0060a000-0060b000 r--p 0000a000 fc:00 794418 /bin/cat\n"
115 "0060b000-0060c000 rw-p 0000b000 fc:00 794418 /bin/cat\n";
116
117 std::vector<google_breakpad::MappedMemoryRegion> regions;
118 ASSERT_TRUE(ParseProcMaps(kMultiple, ®ions));
119 ASSERT_EQ(3u, regions.size());
120
121 EXPECT_EQ(0x00400000u, regions[0].start);
122 EXPECT_EQ(0x0040b000u, regions[0].end);
123 EXPECT_EQ(0x00000000u, regions[0].offset);
124 EXPECT_EQ("/bin/cat", regions[0].path);
125
126 EXPECT_EQ(0x0060a000u, regions[1].start);
127 EXPECT_EQ(0x0060b000u, regions[1].end);
128 EXPECT_EQ(0x0000a000u, regions[1].offset);
129 EXPECT_EQ("/bin/cat", regions[1].path);
130
131 EXPECT_EQ(0x0060b000u, regions[2].start);
132 EXPECT_EQ(0x0060c000u, regions[2].end);
133 EXPECT_EQ(0x0000b000u, regions[2].offset);
134 EXPECT_EQ("/bin/cat", regions[2].path);
135 }
136
TEST(ProcMapsTest,Permissions)137 TEST(ProcMapsTest, Permissions) {
138 static struct {
139 const char* input;
140 uint8_t permissions;
141 } kTestCases[] = {
142 {"00400000-0040b000 ---s 00000000 fc:00 794418 /bin/cat\n", 0},
143 {"00400000-0040b000 ---S 00000000 fc:00 794418 /bin/cat\n", 0},
144 {"00400000-0040b000 r--s 00000000 fc:00 794418 /bin/cat\n",
145 google_breakpad::MappedMemoryRegion::READ},
146 {"00400000-0040b000 -w-s 00000000 fc:00 794418 /bin/cat\n",
147 google_breakpad::MappedMemoryRegion::WRITE},
148 {"00400000-0040b000 --xs 00000000 fc:00 794418 /bin/cat\n",
149 google_breakpad::MappedMemoryRegion::EXECUTE},
150 {"00400000-0040b000 rwxs 00000000 fc:00 794418 /bin/cat\n",
151 google_breakpad::MappedMemoryRegion::READ
152 | google_breakpad::MappedMemoryRegion::WRITE
153 | google_breakpad::MappedMemoryRegion::EXECUTE},
154 {"00400000-0040b000 ---p 00000000 fc:00 794418 /bin/cat\n",
155 google_breakpad::MappedMemoryRegion::PRIVATE},
156 {"00400000-0040b000 r--p 00000000 fc:00 794418 /bin/cat\n",
157 google_breakpad::MappedMemoryRegion::READ
158 | google_breakpad::MappedMemoryRegion::PRIVATE},
159 {"00400000-0040b000 -w-p 00000000 fc:00 794418 /bin/cat\n",
160 google_breakpad::MappedMemoryRegion::WRITE
161 | google_breakpad::MappedMemoryRegion::PRIVATE},
162 {"00400000-0040b000 --xp 00000000 fc:00 794418 /bin/cat\n",
163 google_breakpad::MappedMemoryRegion::EXECUTE
164 | google_breakpad::MappedMemoryRegion::PRIVATE},
165 {"00400000-0040b000 rwxp 00000000 fc:00 794418 /bin/cat\n",
166 google_breakpad::MappedMemoryRegion::READ
167 | google_breakpad::MappedMemoryRegion::WRITE
168 | google_breakpad::MappedMemoryRegion::EXECUTE
169 | google_breakpad::MappedMemoryRegion::PRIVATE},
170 };
171
172 for (size_t i = 0; i < sizeof(kTestCases) / sizeof(kTestCases[0]); ++i) {
173 std::vector<google_breakpad::MappedMemoryRegion> regions;
174 EXPECT_TRUE(ParseProcMaps(kTestCases[i].input, ®ions));
175 EXPECT_EQ(1u, regions.size());
176 if (regions.empty())
177 continue;
178 EXPECT_EQ(kTestCases[i].permissions, regions[0].permissions);
179 }
180 }
181
TEST(ProcMapsTest,MissingFields)182 TEST(ProcMapsTest, MissingFields) {
183 static const char* kTestCases[] = {
184 "00400000\n", // Missing end + beyond.
185 "00400000-0040b000\n", // Missing perms + beyond.
186 "00400000-0040b000 r-xp\n", // Missing offset + beyond.
187 "00400000-0040b000 r-xp 00000000\n", // Missing device + beyond.
188 "00400000-0040b000 r-xp 00000000 fc:00\n", // Missing inode + beyond.
189 "00400000-0040b000 00000000 fc:00 794418 /bin/cat\n", // Missing perms.
190 "00400000-0040b000 r-xp fc:00 794418 /bin/cat\n", // Missing offset.
191 "00400000-0040b000 r-xp 00000000 fc:00 /bin/cat\n", // Missing inode.
192 "00400000 r-xp 00000000 fc:00 794418 /bin/cat\n", // Missing end.
193 "-0040b000 r-xp 00000000 fc:00 794418 /bin/cat\n", // Missing start.
194 "00400000-0040b000 r-xp 00000000 794418 /bin/cat\n", // Missing device.
195 };
196
197 for (size_t i = 0; i < sizeof(kTestCases) / sizeof(kTestCases[0]); ++i) {
198 std::vector<google_breakpad::MappedMemoryRegion> regions;
199 EXPECT_FALSE(ParseProcMaps(kTestCases[i], ®ions));
200 }
201 }
202
TEST(ProcMapsTest,InvalidInput)203 TEST(ProcMapsTest, InvalidInput) {
204 static const char* kTestCases[] = {
205 "thisisal-0040b000 rwxp 00000000 fc:00 794418 /bin/cat\n",
206 "0040000d-linvalid rwxp 00000000 fc:00 794418 /bin/cat\n",
207 "00400000-0040b000 inpu 00000000 fc:00 794418 /bin/cat\n",
208 "00400000-0040b000 rwxp tforproc fc:00 794418 /bin/cat\n",
209 "00400000-0040b000 rwxp 00000000 ma:ps 794418 /bin/cat\n",
210 "00400000-0040b000 rwxp 00000000 fc:00 parse! /bin/cat\n",
211 };
212
213 for (size_t i = 0; i < sizeof(kTestCases) / sizeof(kTestCases[0]); ++i) {
214 std::vector<google_breakpad::MappedMemoryRegion> regions;
215 EXPECT_FALSE(ParseProcMaps(kTestCases[i], ®ions));
216 }
217 }
218
TEST(ProcMapsTest,ParseProcMapsEmptyString)219 TEST(ProcMapsTest, ParseProcMapsEmptyString) {
220 std::vector<google_breakpad::MappedMemoryRegion> regions;
221 EXPECT_TRUE(ParseProcMaps("", ®ions));
222 EXPECT_EQ(0ULL, regions.size());
223 }
224
225 // Testing a couple of remotely possible weird things in the input:
226 // - Line ending with \r\n or \n\r.
227 // - File name contains quotes.
228 // - File name has whitespaces.
TEST(ProcMapsTest,ParseProcMapsWeirdCorrectInput)229 TEST(ProcMapsTest, ParseProcMapsWeirdCorrectInput) {
230 std::vector<google_breakpad::MappedMemoryRegion> regions;
231 const string kContents =
232 "00400000-0040b000 r-xp 00000000 fc:00 2106562 "
233 " /bin/cat\r\n"
234 "7f53b7dad000-7f53b7f62000 r-xp 00000000 fc:00 263011 "
235 " /lib/x86_64-linux-gnu/libc-2.15.so\n\r"
236 "7f53b816d000-7f53b818f000 r-xp 00000000 fc:00 264284 "
237 " /lib/x86_64-linux-gnu/ld-2.15.so\n"
238 "7fff9c7ff000-7fff9c800000 r-xp 00000000 00:00 0 "
239 " \"vd so\"\n"
240 "ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 "
241 " [vsys call]\n";
242 EXPECT_TRUE(ParseProcMaps(kContents, ®ions));
243 EXPECT_EQ(5ULL, regions.size());
244 EXPECT_EQ("/bin/cat", regions[0].path);
245 EXPECT_EQ("/lib/x86_64-linux-gnu/libc-2.15.so", regions[1].path);
246 EXPECT_EQ("/lib/x86_64-linux-gnu/ld-2.15.so", regions[2].path);
247 EXPECT_EQ("\"vd so\"", regions[3].path);
248 EXPECT_EQ("[vsys call]", regions[4].path);
249 }
250
251 } // namespace
252