1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include "get_test_data.h"
20 #include "utils.h"
21
ModulesMatch(const char * p,const char * q)22 static bool ModulesMatch(const char* p, const char* q) {
23 if (p == nullptr && q == nullptr) {
24 return true;
25 }
26 if (p != nullptr && q != nullptr) {
27 return strcmp(p, q) == 0;
28 }
29 return false;
30 }
31
KernelSymbolsMatch(const KernelSymbol & sym1,const KernelSymbol & sym2)32 static bool KernelSymbolsMatch(const KernelSymbol& sym1,
33 const KernelSymbol& sym2) {
34 return sym1.addr == sym2.addr && sym1.type == sym2.type &&
35 strcmp(sym1.name, sym2.name) == 0 &&
36 ModulesMatch(sym1.module, sym2.module);
37 }
38
TEST(utils,ProcessKernelSymbols)39 TEST(utils, ProcessKernelSymbols) {
40 std::string data =
41 "ffffffffa005c4e4 d __warned.41698 [libsas]\n"
42 "aaaaaaaaaaaaaaaa T _text\n"
43 "cccccccccccccccc c ccccc\n";
44 KernelSymbol expected_symbol;
45 expected_symbol.addr = 0xffffffffa005c4e4ULL;
46 expected_symbol.type = 'd';
47 expected_symbol.name = "__warned.41698";
48 expected_symbol.module = "libsas";
49 ASSERT_TRUE(ProcessKernelSymbols(
50 data,
51 std::bind(&KernelSymbolsMatch, std::placeholders::_1, expected_symbol)));
52
53 expected_symbol.addr = 0xaaaaaaaaaaaaaaaaULL;
54 expected_symbol.type = 'T';
55 expected_symbol.name = "_text";
56 expected_symbol.module = nullptr;
57 ASSERT_TRUE(ProcessKernelSymbols(
58 data,
59 std::bind(&KernelSymbolsMatch, std::placeholders::_1, expected_symbol)));
60
61 expected_symbol.name = "non_existent_symbol";
62 ASSERT_FALSE(ProcessKernelSymbols(
63 data,
64 std::bind(&KernelSymbolsMatch, std::placeholders::_1, expected_symbol)));
65 }
66
TEST(utils,ConvertBytesToValue)67 TEST(utils, ConvertBytesToValue) {
68 char buf[8];
69 for (int i = 0; i < 8; ++i) {
70 buf[i] = i;
71 }
72 ASSERT_EQ(0x1ULL, ConvertBytesToValue(buf + 1, 1));
73 ASSERT_EQ(0x201ULL, ConvertBytesToValue(buf + 1, 2));
74 ASSERT_EQ(0x05040302ULL, ConvertBytesToValue(buf + 2, 4));
75 ASSERT_EQ(0x0706050403020100ULL, ConvertBytesToValue(buf, 8));
76 }
77
TEST(utils,ArchiveHelper)78 TEST(utils, ArchiveHelper) {
79 std::unique_ptr<ArchiveHelper> ahelper = ArchiveHelper::CreateInstance(GetTestData(APK_FILE));
80 ASSERT_TRUE(ahelper);
81 bool found = false;
82 ZipEntry lib_entry;
83 ASSERT_TRUE(ahelper->IterateEntries([&](ZipEntry& entry, const std::string& name) {
84 if (name == NATIVELIB_IN_APK) {
85 found = true;
86 lib_entry = entry;
87 return false;
88 }
89 return true;
90 }));
91 ASSERT_TRUE(found);
92 ZipEntry entry;
93 ASSERT_TRUE(ahelper->FindEntry(NATIVELIB_IN_APK, &entry));
94 ASSERT_EQ(entry.offset, lib_entry.offset);
95 std::vector<uint8_t> data;
96 ASSERT_TRUE(ahelper->GetEntryData(entry, &data));
97
98 // Check reading wrong file formats.
99 ASSERT_FALSE(ArchiveHelper::CreateInstance(GetTestData(ELF_FILE)));
100 ASSERT_FALSE(ArchiveHelper::CreateInstance("/dev/zero"));
101 }
102