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/* Copyright 2017 R. Thomas
* Copyright 2017 Quarkslab
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define CATCH_CONFIG_MAIN
#include <catch.hpp>
#include <yaml-cpp/yaml.h>
#include <LIEF/ELF.hpp>
#include "utils.hpp"
extern const YAML::Node config = YAML::LoadFile(std::string(PATH_TO_CONFIG) + "/config.yaml");
using namespace LIEF::ELF;
TEST_CASE("Test parse", "[elf][parser]")
{
using namespace Catch::Generators;
// Get test cases
std::vector<std::string> elf_test_cases = Test::get_test_cases();
// Get one
std::vector<std::string>::iterator test_case = between(
std::begin(elf_test_cases),
std::prev(std::end(elf_test_cases)));
YAML::Node parameters = YAML::LoadFile(config[*test_case]["config_file"].as<std::string>());
DYNSYM_COUNT_METHODS mtd = DYNSYM_COUNT_METHODS::COUNT_AUTO;
if (*test_case == "test_gcc_32") {
mtd = DYNSYM_COUNT_METHODS::COUNT_SECTION;
}
// Parse binary
std::unique_ptr<const Binary> binary{Parser::parse(config[*test_case]["binary_path"].as<std::string>(), mtd)};
INFO("Binary used: " << binary->name());
// Raw data
std::ifstream binfile(config[*test_case]["binary_path"].as<std::string>(), std::ios::in | std::ios::binary);
REQUIRE(binfile);
std::vector<uint8_t> raw = {std::istreambuf_iterator<char>(binfile), std::istreambuf_iterator<char>()};
// Header
// ======
SECTION("Header") {
const Header& header = binary->header();
REQUIRE(header.numberof_sections() == parameters["Header"]["nbShdr"].as<unsigned int>());
REQUIRE(header.numberof_segments() == parameters["Header"]["nbPhdr"].as<unsigned int>());
REQUIRE(header.entrypoint() == parameters["Header"]["entryPoint"].as<unsigned long long>());
REQUIRE(header.program_headers_offset() == parameters["Header"]["offsetToPhdr"].as<unsigned long long>());
REQUIRE(header.section_headers_offset() == parameters["Header"]["offsetToShdr"].as<unsigned long long>());
}
// Sections
// ========
SECTION("Sections") {
REQUIRE(binary->sections().size() == parameters["Header"]["nbShdr"].as<unsigned int>());
if (parameters["Sections"]) {
it_const_sections sections = binary->sections();
for (size_t i = 0; i < parameters["Sections"].size(); ++i) {
const Section& section = sections[i];
//name[:17] because readelf provide only the first 16 char
REQUIRE(parameters["Sections"][i]["name"].as<std::string>() == section.name().substr(0,17));
REQUIRE(parameters["Sections"][i]["offset"].as<unsigned long long>() == section.file_offset());
REQUIRE(parameters["Sections"][i]["address"].as<unsigned long long>() == section.virtual_address());
REQUIRE(parameters["Sections"][i]["size"].as<unsigned long long>() == section.size());
REQUIRE(parameters["Sections"][i]["nb"].as<unsigned int>() == i);
if (parameters["Sections"][i]["size"].as<unsigned long long>() > 0 and
section.type() != LIEF::ELF::ELF_SECTION_TYPES::SHT_NOBITS) {
REQUIRE(
std::vector<uint8_t>(
raw.data() + parameters["Sections"][i]["offset"].as<unsigned long long>(),
raw.data() + parameters["Sections"][i]["offset"].as<unsigned long long>() + parameters["Sections"][i]["size"].as<unsigned long long>()) ==
section.content()
);
}
}
}
}
// Segments
// ========
SECTION("Segments") {
REQUIRE(binary->segments().size() == parameters["Header"]["nbPhdr"].as<unsigned int>());
if (parameters["Segments"]) {
it_const_segments segments = binary->segments();
for (size_t i = 0; i < parameters["Segments"].size(); ++i) {
const Segment& segment = segments[i];
REQUIRE(parameters["Segments"][i]["fSize"].as<unsigned long long>() == segment.physical_size());
REQUIRE(parameters["Segments"][i]["offset"].as<unsigned long long>() == segment.file_offset());
REQUIRE(parameters["Segments"][i]["pAddress"].as<unsigned long long>() == segment.physical_address());
REQUIRE(parameters["Segments"][i]["vAddress"].as<unsigned long long>() == segment.virtual_address());
REQUIRE(parameters["Segments"][i]["fSize"].as<unsigned long long>() == segment.physical_size());
REQUIRE(parameters["Segments"][i]["vSize"].as<unsigned long long>() == segment.virtual_size());
if (parameters["Segments"][i]["fSize"].as<unsigned long long>() > 0) {
REQUIRE(
std::vector<uint8_t>(
raw.data() + parameters["Segments"][i]["offset"].as<unsigned long long>(),
raw.data() + parameters["Segments"][i]["offset"].as<unsigned long long>() + parameters["Segments"][i]["fSize"].as<unsigned long long>()) ==
segment.content());
}
}
}
}
// Dynamic symbols
// ===============
SECTION("Dynamic Symbols") {
if (parameters["DynamicSymbols"]) {
// +1 for the null entry
REQUIRE(parameters["DynamicSymbols"].size() == binary->dynamic_symbols().size());
it_const_symbols dynamic_symbols = binary->dynamic_symbols();
for (size_t i = 0; i < parameters["DynamicSymbols"].size(); ++i) {
const Symbol& symbol = dynamic_symbols[i];
REQUIRE(parameters["DynamicSymbols"][i]["name"].as<std::string>() == symbol.name().substr(0, 25));
}
}
}
// Static symbols
// ===============
SECTION("Static Symbols") {
if (parameters["StaticSymbols"]) {
it_const_symbols static_symbols = binary->static_symbols();
for (size_t i = 0; i < parameters["StaticSymbols"].size(); ++i) {
const Symbol& symbol = static_symbols[parameters["StaticSymbols"][i]["num"].as<size_t>()];
REQUIRE(parameters["StaticSymbols"][i]["name"].as<std::string>() == symbol.name().substr(0, 25));
}
}
}
// Dynamic relocations
// ===================
SECTION("Dynamic relocations") {
if (parameters["DynamicReloc"]) {
REQUIRE(parameters["DynamicReloc"].size() == binary->dynamic_relocations().size());
it_const_dynamic_relocations relocations = binary->dynamic_relocations();
for (size_t i = 0; i < parameters["DynamicReloc"].size(); ++i) {
const Relocation& relocation = relocations[i];
REQUIRE(parameters["DynamicReloc"][i]["name"].as<std::string>() == relocation.symbol().name().substr(0, 22));
REQUIRE(parameters["DynamicReloc"][i]["offset"].as<uint64_t>() == relocation.address());
}
}
}
// .plt.got relocations
// ====================
SECTION(".plt.got relocations") {
if (parameters["PltGotReloc"]) {
REQUIRE(parameters["PltGotReloc"].size() == binary->pltgot_relocations().size());
it_const_pltgot_relocations relocations = binary->pltgot_relocations();
for (size_t i = 0; i < parameters["PltGotReloc"].size(); ++i) {
const Relocation& relocation = relocations[i];
if (parameters["PltGotReloc"][i]["name"].as<std::string>().size() > 0) {
REQUIRE(parameters["PltGotReloc"][i]["name"].as<std::string>() == relocation.symbol().name().substr(0, 22));
}
REQUIRE(parameters["PltGotReloc"][i]["offset"].as<uint64_t>() == relocation.address());
}
}
}
}
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