| // Copyright 2016 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 "courgette/program_detector.h" |
| |
| #include <memory> |
| |
| #include "courgette/disassembler.h" |
| #include "courgette/disassembler_elf_32_x86.h" |
| #include "courgette/disassembler_win32_x64.h" |
| #include "courgette/disassembler_win32_x86.h" |
| |
| namespace courgette { |
| |
| std::unique_ptr<Disassembler> DetectDisassembler(const uint8_t* buffer, |
| size_t length) { |
| std::unique_ptr<Disassembler> disassembler; |
| |
| if (DisassemblerWin32X86::QuickDetect(buffer, length)) { |
| disassembler = std::make_unique<DisassemblerWin32X86>(buffer, length); |
| if (disassembler->ParseHeader()) |
| return disassembler; |
| } |
| if (DisassemblerWin32X64::QuickDetect(buffer, length)) { |
| disassembler = std::make_unique<DisassemblerWin32X64>(buffer, length); |
| if (disassembler->ParseHeader()) |
| return disassembler; |
| } |
| if (DisassemblerElf32X86::QuickDetect(buffer, length)) { |
| disassembler = std::make_unique<DisassemblerElf32X86>(buffer, length); |
| if (disassembler->ParseHeader()) |
| return disassembler; |
| } |
| return nullptr; |
| } |
| |
| Status DetectExecutableType(const uint8_t* buffer, |
| size_t length, |
| ExecutableType* type, |
| size_t* detected_length) { |
| std::unique_ptr<Disassembler> disassembler( |
| DetectDisassembler(buffer, length)); |
| |
| if (!disassembler) { // We failed to detect anything. |
| *type = EXE_UNKNOWN; |
| *detected_length = 0; |
| return C_INPUT_NOT_RECOGNIZED; |
| } |
| |
| *type = disassembler->kind(); |
| *detected_length = disassembler->length(); |
| return C_OK; |
| } |
| |
| } // namespace courgette |