1 /*
2 * Copyright (C) 2024 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 <libelf64/comparator.h>
18 #include <libelf64/elf64.h>
19 #include <libelf64/parse.h>
20
21 #include <iostream>
22 #include <set>
23 #include <string>
24 #include <vector>
25
26 #include <elf.h>
27 #include <stdlib.h>
28
usage()29 void usage() {
30 const std::string progname = getprogname();
31
32 std::cout << "Usage: " << progname << " [shared_lib_1] [shared_lib_2]\n"
33 << R"(
34 Options:
35 shared_lib_1 elf64 shared library to compare with shared_lib_2
36 shared_lib_2 elf64 shared library to compare with shared_lib_1
37 )" << std::endl;
38 }
39
40 // Compare ELF64 binaries (shared libraries, executables).
main(int argc,char * argv[])41 int main(int argc, char* argv[]) {
42 if (argc < 3) {
43 usage();
44 return EXIT_FAILURE;
45 }
46
47 std::string baseSharedLibName1(argv[1]);
48 std::string baseSharedLibName2(argv[2]);
49
50 android::elf64::Elf64Binary elf64Binary1;
51 android::elf64::Elf64Binary elf64Binary2;
52
53 bool parse = android::elf64::Elf64Parser::ParseElfFile(baseSharedLibName1, elf64Binary1);
54 if (!parse) {
55 std::cerr << "Failed to parse file " << baseSharedLibName1 << std::endl;
56 return EXIT_FAILURE;
57 }
58
59 parse = android::elf64::Elf64Parser::ParseElfFile(baseSharedLibName2, elf64Binary2);
60 if (!parse) {
61 std::cerr << "Failed to parse file " << baseSharedLibName2 << std::endl;
62 return EXIT_FAILURE;
63 }
64
65 if (android::elf64::Elf64Comparator::compare(elf64Binary1.ehdr, elf64Binary2.ehdr)) {
66 std::cout << "Executable Headers are equal" << std::endl;
67 } else {
68 std::cout << "Executable Headers are NOT equal" << std::endl;
69 }
70
71 if (android::elf64::Elf64Comparator::compare(elf64Binary1.phdrs, elf64Binary2.phdrs)) {
72 std::cout << "Program Headers are equal" << std::endl;
73 } else {
74 std::cout << "Program Headers are NOT equal" << std::endl;
75 }
76
77 if (android::elf64::Elf64Comparator::compare(elf64Binary1.shdrs, elf64Binary2.shdrs)) {
78 std::cout << "Section Headers are equal" << std::endl;
79 } else {
80 std::cout << "Section Headers are NOT equal" << std::endl;
81 }
82
83 if (android::elf64::Elf64Comparator::compare(elf64Binary1.sections, elf64Binary2.sections)) {
84 std::cout << "Sections are equal" << std::endl;
85 } else {
86 std::cout << "Sections are NOT equal" << std::endl;
87 }
88
89 return 0;
90 }
91