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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "courgette/program_detector.h" | 5 #include "courgette/program_detector.h" |
6 | 6 |
7 #include <utility> | 7 #include <utility> |
8 | 8 |
9 #include "courgette/assembly_program.h" | 9 #include "courgette/assembly_program.h" |
10 #include "courgette/disassembler.h" | 10 #include "courgette/disassembler.h" |
11 #include "courgette/disassembler_elf_32_arm.h" | 11 #include "courgette/disassembler_elf_32_arm.h" |
12 #include "courgette/disassembler_elf_32_x86.h" | 12 #include "courgette/disassembler_elf_32_x86.h" |
13 #include "courgette/disassembler_win32_x64.h" | 13 #include "courgette/disassembler_win32_x64.h" |
14 #include "courgette/disassembler_win32_x86.h" | 14 #include "courgette/disassembler_win32_x86.h" |
15 | 15 |
16 namespace courgette { | 16 namespace courgette { |
17 | 17 |
18 namespace { | 18 namespace { |
19 | 19 |
20 // Returns a new instance of Disassembler subclass if binary data given in | 20 // Returns a new instance of Disassembler subclass if binary data given in |
21 // |buffer| and |length| matches a known binary format, otherwise null. | 21 // |buffer| and |length| matches a known binary format, otherwise null. |
22 scoped_ptr<Disassembler> DetectDisassembler(const void* buffer, size_t length) { | 22 std::unique_ptr<Disassembler> DetectDisassembler(const void* buffer, |
23 scoped_ptr<Disassembler> disassembler; | 23 size_t length) { |
| 24 std::unique_ptr<Disassembler> disassembler; |
24 | 25 |
25 disassembler.reset(new DisassemblerWin32X86(buffer, length)); | 26 disassembler.reset(new DisassemblerWin32X86(buffer, length)); |
26 if (disassembler->ParseHeader()) | 27 if (disassembler->ParseHeader()) |
27 return disassembler; | 28 return disassembler; |
28 | 29 |
29 disassembler.reset(new DisassemblerWin32X64(buffer, length)); | 30 disassembler.reset(new DisassemblerWin32X64(buffer, length)); |
30 if (disassembler->ParseHeader()) | 31 if (disassembler->ParseHeader()) |
31 return disassembler; | 32 return disassembler; |
32 | 33 |
33 disassembler.reset(new DisassemblerElf32X86(buffer, length)); | 34 disassembler.reset(new DisassemblerElf32X86(buffer, length)); |
34 if (disassembler->ParseHeader()) | 35 if (disassembler->ParseHeader()) |
35 return disassembler; | 36 return disassembler; |
36 | 37 |
37 disassembler.reset(new DisassemblerElf32ARM(buffer, length)); | 38 disassembler.reset(new DisassemblerElf32ARM(buffer, length)); |
38 if (disassembler->ParseHeader()) | 39 if (disassembler->ParseHeader()) |
39 return disassembler; | 40 return disassembler; |
40 | 41 |
41 return nullptr; | 42 return nullptr; |
42 } | 43 } |
43 | 44 |
44 } // namespace | 45 } // namespace |
45 | 46 |
46 Status DetectExecutableType(const void* buffer, | 47 Status DetectExecutableType(const void* buffer, |
47 size_t length, | 48 size_t length, |
48 ExecutableType* type, | 49 ExecutableType* type, |
49 size_t* detected_length) { | 50 size_t* detected_length) { |
50 scoped_ptr<Disassembler> disassembler(DetectDisassembler(buffer, length)); | 51 std::unique_ptr<Disassembler> disassembler( |
| 52 DetectDisassembler(buffer, length)); |
51 | 53 |
52 if (!disassembler) { // We failed to detect anything. | 54 if (!disassembler) { // We failed to detect anything. |
53 *type = EXE_UNKNOWN; | 55 *type = EXE_UNKNOWN; |
54 *detected_length = 0; | 56 *detected_length = 0; |
55 return C_INPUT_NOT_RECOGNIZED; | 57 return C_INPUT_NOT_RECOGNIZED; |
56 } | 58 } |
57 | 59 |
58 *type = disassembler->kind(); | 60 *type = disassembler->kind(); |
59 *detected_length = disassembler->length(); | 61 *detected_length = disassembler->length(); |
60 return C_OK; | 62 return C_OK; |
61 } | 63 } |
62 | 64 |
63 Status ParseDetectedExecutable(const void* buffer, | 65 Status ParseDetectedExecutable(const void* buffer, |
64 size_t length, | 66 size_t length, |
65 scoped_ptr<AssemblyProgram>* output) { | 67 std::unique_ptr<AssemblyProgram>* output) { |
66 output->reset(); | 68 output->reset(); |
67 | 69 |
68 scoped_ptr<Disassembler> disassembler(DetectDisassembler(buffer, length)); | 70 std::unique_ptr<Disassembler> disassembler( |
| 71 DetectDisassembler(buffer, length)); |
69 if (!disassembler) | 72 if (!disassembler) |
70 return C_INPUT_NOT_RECOGNIZED; | 73 return C_INPUT_NOT_RECOGNIZED; |
71 | 74 |
72 scoped_ptr<AssemblyProgram> program( | 75 std::unique_ptr<AssemblyProgram> program( |
73 new AssemblyProgram(disassembler->kind())); | 76 new AssemblyProgram(disassembler->kind())); |
74 | 77 |
75 if (!disassembler->Disassemble(program.get())) | 78 if (!disassembler->Disassemble(program.get())) |
76 return C_DISASSEMBLY_FAILED; | 79 return C_DISASSEMBLY_FAILED; |
77 | 80 |
78 if (!program->TrimLabels()) | 81 if (!program->TrimLabels()) |
79 return C_TRIM_FAILED; | 82 return C_TRIM_FAILED; |
80 | 83 |
81 *output = std::move(program); | 84 *output = std::move(program); |
82 return C_OK; | 85 return C_OK; |
83 } | 86 } |
84 | 87 |
85 } // namespace courgette | 88 } // namespace courgette |
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