mozilla-central/toolkit/crashreporter/google-breakpad/src/processor/proc_maps_linux_unittest.cc

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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "breakpad_googletest_includes.h"
#include "common/using_std_string.h"
#include "google_breakpad/processor/proc_maps_linux.h"
namespace {
TEST(ProcMapsTest, Empty) {
std::vector<google_breakpad::MappedMemoryRegion> regions;
EXPECT_TRUE(ParseProcMaps("", &regions));
EXPECT_EQ(0u, regions.size());
}
TEST(ProcMapsTest, NoSpaces) {
static const char kNoSpaces[] =
"00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/cat\n";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_TRUE(ParseProcMaps(kNoSpaces, &regions));
ASSERT_EQ(1u, regions.size());
EXPECT_EQ(0x00400000u, regions[0].start);
EXPECT_EQ(0x0040b000u, regions[0].end);
EXPECT_EQ(0x00002200u, regions[0].offset);
EXPECT_EQ("/bin/cat", regions[0].path);
}
TEST(ProcMapsTest, Spaces) {
static const char kSpaces[] =
"00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/space cat\n";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_TRUE(ParseProcMaps(kSpaces, &regions));
ASSERT_EQ(1u, regions.size());
EXPECT_EQ(0x00400000u, regions[0].start);
EXPECT_EQ(0x0040b000u, regions[0].end);
EXPECT_EQ(0x00002200u, regions[0].offset);
EXPECT_EQ("/bin/space cat", regions[0].path);
}
TEST(ProcMapsTest, NoNewline) {
static const char kNoSpaces[] =
"00400000-0040b000 r-xp 00002200 fc:00 794418 /bin/cat";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_FALSE(ParseProcMaps(kNoSpaces, &regions));
}
TEST(ProcMapsTest, NoPath) {
static const char kNoPath[] =
"00400000-0040b000 rw-p 00000000 00:00 0 \n";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_TRUE(ParseProcMaps(kNoPath, &regions));
ASSERT_EQ(1u, regions.size());
EXPECT_EQ(0x00400000u, regions[0].start);
EXPECT_EQ(0x0040b000u, regions[0].end);
EXPECT_EQ(0x00000000u, regions[0].offset);
EXPECT_EQ("", regions[0].path);
}
TEST(ProcMapsTest, Heap) {
static const char kHeap[] =
"022ac000-022cd000 rw-p 00000000 00:00 0 [heap]\n";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_TRUE(ParseProcMaps(kHeap, &regions));
ASSERT_EQ(1u, regions.size());
EXPECT_EQ(0x022ac000u, regions[0].start);
EXPECT_EQ(0x022cd000u, regions[0].end);
EXPECT_EQ(0x00000000u, regions[0].offset);
EXPECT_EQ("[heap]", regions[0].path);
}
#if defined(ARCH_CPU_32_BITS)
TEST(ProcMapsTest, Stack32) {
static const char kStack[] =
"beb04000-beb25000 rw-p 00000000 00:00 0 [stack]\n";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_TRUE(ParseProcMaps(kStack, &regions));
ASSERT_EQ(1u, regions.size());
EXPECT_EQ(0xbeb04000u, regions[0].start);
EXPECT_EQ(0xbeb25000u, regions[0].end);
EXPECT_EQ(0x00000000u, regions[0].offset);
EXPECT_EQ("[stack]", regions[0].path);
}
#elif defined(ARCH_CPU_64_BITS)
TEST(ProcMapsTest, Stack64) {
static const char kStack[] =
"7fff69c5b000-7fff69c7d000 rw-p 00000000 00:00 0 [stack]\n";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_TRUE(ParseProcMaps(kStack, &regions));
ASSERT_EQ(1u, regions.size());
EXPECT_EQ(0x7fff69c5b000u, regions[0].start);
EXPECT_EQ(0x7fff69c7d000u, regions[0].end);
EXPECT_EQ(0x00000000u, regions[0].offset);
EXPECT_EQ("[stack]", regions[0].path);
}
#endif
TEST(ProcMapsTest, Multiple) {
static const char kMultiple[] =
"00400000-0040b000 r-xp 00000000 fc:00 794418 /bin/cat\n"
"0060a000-0060b000 r--p 0000a000 fc:00 794418 /bin/cat\n"
"0060b000-0060c000 rw-p 0000b000 fc:00 794418 /bin/cat\n";
std::vector<google_breakpad::MappedMemoryRegion> regions;
ASSERT_TRUE(ParseProcMaps(kMultiple, &regions));
ASSERT_EQ(3u, regions.size());
EXPECT_EQ(0x00400000u, regions[0].start);
EXPECT_EQ(0x0040b000u, regions[0].end);
EXPECT_EQ(0x00000000u, regions[0].offset);
EXPECT_EQ("/bin/cat", regions[0].path);
EXPECT_EQ(0x0060a000u, regions[1].start);
EXPECT_EQ(0x0060b000u, regions[1].end);
EXPECT_EQ(0x0000a000u, regions[1].offset);
EXPECT_EQ("/bin/cat", regions[1].path);
EXPECT_EQ(0x0060b000u, regions[2].start);
EXPECT_EQ(0x0060c000u, regions[2].end);
EXPECT_EQ(0x0000b000u, regions[2].offset);
EXPECT_EQ("/bin/cat", regions[2].path);
}
TEST(ProcMapsTest, Permissions) {
static struct {
const char* input;
uint8_t permissions;
} kTestCases[] = {
{"00400000-0040b000 ---s 00000000 fc:00 794418 /bin/cat\n", 0},
{"00400000-0040b000 ---S 00000000 fc:00 794418 /bin/cat\n", 0},
{"00400000-0040b000 r--s 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::READ},
{"00400000-0040b000 -w-s 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::WRITE},
{"00400000-0040b000 --xs 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::EXECUTE},
{"00400000-0040b000 rwxs 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::READ
| google_breakpad::MappedMemoryRegion::WRITE
| google_breakpad::MappedMemoryRegion::EXECUTE},
{"00400000-0040b000 ---p 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::PRIVATE},
{"00400000-0040b000 r--p 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::READ
| google_breakpad::MappedMemoryRegion::PRIVATE},
{"00400000-0040b000 -w-p 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::WRITE
| google_breakpad::MappedMemoryRegion::PRIVATE},
{"00400000-0040b000 --xp 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::EXECUTE
| google_breakpad::MappedMemoryRegion::PRIVATE},
{"00400000-0040b000 rwxp 00000000 fc:00 794418 /bin/cat\n",
google_breakpad::MappedMemoryRegion::READ
| google_breakpad::MappedMemoryRegion::WRITE
| google_breakpad::MappedMemoryRegion::EXECUTE
| google_breakpad::MappedMemoryRegion::PRIVATE},
};
for (size_t i = 0; i < sizeof(kTestCases) / sizeof(kTestCases[0]); ++i) {
std::vector<google_breakpad::MappedMemoryRegion> regions;
EXPECT_TRUE(ParseProcMaps(kTestCases[i].input, &regions));
EXPECT_EQ(1u, regions.size());
if (regions.empty())
continue;
EXPECT_EQ(kTestCases[i].permissions, regions[0].permissions);
}
}
TEST(ProcMapsTest, MissingFields) {
static const char* kTestCases[] = {
"00400000\n", // Missing end + beyond.
"00400000-0040b000\n", // Missing perms + beyond.
"00400000-0040b000 r-xp\n", // Missing offset + beyond.
"00400000-0040b000 r-xp 00000000\n", // Missing device + beyond.
"00400000-0040b000 r-xp 00000000 fc:00\n", // Missing inode + beyond.
"00400000-0040b000 00000000 fc:00 794418 /bin/cat\n", // Missing perms.
"00400000-0040b000 r-xp fc:00 794418 /bin/cat\n", // Missing offset.
"00400000-0040b000 r-xp 00000000 fc:00 /bin/cat\n", // Missing inode.
"00400000 r-xp 00000000 fc:00 794418 /bin/cat\n", // Missing end.
"-0040b000 r-xp 00000000 fc:00 794418 /bin/cat\n", // Missing start.
"00400000-0040b000 r-xp 00000000 794418 /bin/cat\n", // Missing device.
};
for (size_t i = 0; i < sizeof(kTestCases) / sizeof(kTestCases[0]); ++i) {
std::vector<google_breakpad::MappedMemoryRegion> regions;
EXPECT_FALSE(ParseProcMaps(kTestCases[i], &regions));
}
}
TEST(ProcMapsTest, InvalidInput) {
static const char* kTestCases[] = {
"thisisal-0040b000 rwxp 00000000 fc:00 794418 /bin/cat\n",
"0040000d-linvalid rwxp 00000000 fc:00 794418 /bin/cat\n",
"00400000-0040b000 inpu 00000000 fc:00 794418 /bin/cat\n",
"00400000-0040b000 rwxp tforproc fc:00 794418 /bin/cat\n",
"00400000-0040b000 rwxp 00000000 ma:ps 794418 /bin/cat\n",
"00400000-0040b000 rwxp 00000000 fc:00 parse! /bin/cat\n",
};
for (size_t i = 0; i < sizeof(kTestCases) / sizeof(kTestCases[0]); ++i) {
std::vector<google_breakpad::MappedMemoryRegion> regions;
EXPECT_FALSE(ParseProcMaps(kTestCases[i], &regions));
}
}
TEST(ProcMapsTest, ParseProcMapsEmptyString) {
std::vector<google_breakpad::MappedMemoryRegion> regions;
EXPECT_TRUE(ParseProcMaps("", &regions));
EXPECT_EQ(0ULL, regions.size());
}
// Testing a couple of remotely possible weird things in the input:
// - Line ending with \r\n or \n\r.
// - File name contains quotes.
// - File name has whitespaces.
TEST(ProcMapsTest, ParseProcMapsWeirdCorrectInput) {
std::vector<google_breakpad::MappedMemoryRegion> regions;
const string kContents =
"00400000-0040b000 r-xp 00000000 fc:00 2106562 "
" /bin/cat\r\n"
"7f53b7dad000-7f53b7f62000 r-xp 00000000 fc:00 263011 "
" /lib/x86_64-linux-gnu/libc-2.15.so\n\r"
"7f53b816d000-7f53b818f000 r-xp 00000000 fc:00 264284 "
" /lib/x86_64-linux-gnu/ld-2.15.so\n"
"7fff9c7ff000-7fff9c800000 r-xp 00000000 00:00 0 "
" \"vd so\"\n"
"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 "
" [vsys call]\n";
EXPECT_TRUE(ParseProcMaps(kContents, &regions));
EXPECT_EQ(5ULL, regions.size());
EXPECT_EQ("/bin/cat", regions[0].path);
EXPECT_EQ("/lib/x86_64-linux-gnu/libc-2.15.so", regions[1].path);
EXPECT_EQ("/lib/x86_64-linux-gnu/ld-2.15.so", regions[2].path);
EXPECT_EQ("\"vd so\"", regions[3].path);
EXPECT_EQ("[vsys call]", regions[4].path);
}
} // namespace