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Copy pathResourceStringTable.cpp
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163 lines (126 loc) · 3.94 KB
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/* Copyright 2017 - 2025 R. Thomas
* Copyright 2017 - 2025 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.
*/
#include <utility>
#include "LIEF/utils.hpp"
#include "LIEF/Visitor.hpp"
#include "LIEF/PE/resources/ResourceStringTable.hpp"
#include "LIEF/BinaryStream/BinaryStream.hpp"
#include "logging.hpp"
namespace LIEF {
namespace PE {
result<ResourceStringTable::entry_t> parse_string(BinaryStream& stream) {
// typedef struct {
// WORD wLength;
// WORD wValueLength;
// WORD wType;
// WCHAR szKey;
// WORD Padding;
// WORD Value;
// } String;
auto wLength = stream.read<uint16_t>();
if (!wLength) { return make_error_code(wLength.error()); }
if (*wLength == 0) {
return make_error_code(lief_errors::read_error);
}
const uint32_t end_offset = stream.pos() - sizeof(uint16_t) + *wLength;
auto wValueLength = stream.read<uint16_t>();
if (!wValueLength) { return make_error_code(wValueLength.error()); }
auto wType = stream.read<uint16_t>();
if (!wType) { return make_error_code(wType.error()); }
if (*wType != 0 && wType != 1) {
return make_error_code(lief_errors::corrupted);
}
ResourceStringTable::entry_t entry;
auto szKey = stream.read_u16string();
if (!szKey) { return make_error_code(szKey.error()); }
entry.key = std::move(*szKey);
if (stream.pos() >= end_offset) {
return entry;
}
stream.align(sizeof(uint32_t));
if (stream.pos() >= end_offset) {
return entry;
}
auto Value = stream.read_u16string();
if (!Value) { return entry; }
entry.value = std::move(*Value);
stream.setpos(end_offset);
return entry;
}
result<ResourceStringTable> ResourceStringTable::parse(BinaryStream& stream) {
// typedef struct {
// WORD wLength;
// WORD wValueLength;
// WORD wType;
// WCHAR szKey;
// WORD Padding;
// String Children;
// } StringTable;
ResourceStringTable table;
auto wLength = stream.read<uint16_t>();
if (!wLength) { return make_error_code(wLength.error()); }
auto wValueLength = stream.read<uint16_t>();
if (!wValueLength) { return make_error_code(wValueLength.error()); }
auto wType = stream.read<uint16_t>();
if (!wType) { return make_error_code(wType.error()); }
if (*wType != 0 && wType != 1) {
return make_error_code(lief_errors::corrupted);
}
auto szKey = stream.read_u16string();
if (!szKey) { return make_error_code(szKey.error()); }
table.key(std::move(*szKey));
while (stream) {
stream.align(sizeof(uint32_t));
auto str = parse_string(stream);
if (!str) {
return table;
}
table.add_entry(std::move(*str));
}
return table;
}
std::string ResourceStringTable::entry_t::key_u8() const {
return u16tou8(key);
}
std::string ResourceStringTable::entry_t::value_u8() const {
return u16tou8(value);
}
std::string ResourceStringTable::key_u8() const {
return u16tou8(key());
}
optional<std::string> ResourceStringTable::get(const std::string& key) const {
auto u16 = u8tou16(key);
if (!u16) {
return nullopt();
}
if (auto value = get(*u16)) {
return u16tou8(*value);
}
return nullopt();
}
void ResourceStringTable::accept(Visitor& visitor) const {
visitor.visit(*this);
}
std::ostream& operator<<(std::ostream& os, const ResourceStringTable& table) {
os << fmt::format("BLOCK '{}' {{\n", table.key_u8());
for (const ResourceStringTable::entry_t& entry : table.entries()) {
os << " " << entry << '\n';
}
os << '}';
return os;
}
}
}