1/**************************************************************************/
2/* macho.h */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
18/* */
19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
25/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
26/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#ifndef MACOS_MACHO_H
32#define MACOS_MACHO_H
33
34// Mach-O binary object file format parser and editor.
35
36#include "core/crypto/crypto.h"
37#include "core/crypto/crypto_core.h"
38#include "core/io/file_access.h"
39#include "core/object/ref_counted.h"
40
41class MachO : public RefCounted {
42 struct MachHeader {
43 uint32_t cputype;
44 uint32_t cpusubtype;
45 uint32_t filetype;
46 uint32_t ncmds;
47 uint32_t sizeofcmds;
48 uint32_t flags;
49 };
50
51 enum LoadCommandID {
52 LC_SEGMENT = 0x00000001,
53 LC_SYMTAB = 0x00000002,
54 LC_SYMSEG = 0x00000003,
55 LC_THREAD = 0x00000004,
56 LC_UNIXTHREAD = 0x00000005,
57 LC_LOADFVMLIB = 0x00000006,
58 LC_IDFVMLIB = 0x00000007,
59 LC_IDENT = 0x00000008,
60 LC_FVMFILE = 0x00000009,
61 LC_PREPAGE = 0x0000000a,
62 LC_DYSYMTAB = 0x0000000b,
63 LC_LOAD_DYLIB = 0x0000000c,
64 LC_ID_DYLIB = 0x0000000d,
65 LC_LOAD_DYLINKER = 0x0000000e,
66 LC_ID_DYLINKER = 0x0000000f,
67 LC_PREBOUND_DYLIB = 0x00000010,
68 LC_ROUTINES = 0x00000011,
69 LC_SUB_FRAMEWORK = 0x00000012,
70 LC_SUB_UMBRELLA = 0x00000013,
71 LC_SUB_CLIENT = 0x00000014,
72 LC_SUB_LIBRARY = 0x00000015,
73 LC_TWOLEVEL_HINTS = 0x00000016,
74 LC_PREBIND_CKSUM = 0x00000017,
75 LC_LOAD_WEAK_DYLIB = 0x80000018,
76 LC_SEGMENT_64 = 0x00000019,
77 LC_ROUTINES_64 = 0x0000001a,
78 LC_UUID = 0x0000001b,
79 LC_RPATH = 0x8000001c,
80 LC_CODE_SIGNATURE = 0x0000001d,
81 LC_SEGMENT_SPLIT_INFO = 0x0000001e,
82 LC_REEXPORT_DYLIB = 0x8000001f,
83 LC_LAZY_LOAD_DYLIB = 0x00000020,
84 LC_ENCRYPTION_INFO = 0x00000021,
85 LC_DYLD_INFO = 0x00000022,
86 LC_DYLD_INFO_ONLY = 0x80000022,
87 LC_LOAD_UPWARD_DYLIB = 0x80000023,
88 LC_VERSION_MIN_MACOSX = 0x00000024,
89 LC_VERSION_MIN_IPHONEOS = 0x00000025,
90 LC_FUNCTION_STARTS = 0x00000026,
91 LC_DYLD_ENVIRONMENT = 0x00000027,
92 LC_MAIN = 0x80000028,
93 LC_DATA_IN_CODE = 0x00000029,
94 LC_SOURCE_VERSION = 0x0000002a,
95 LC_DYLIB_CODE_SIGN_DRS = 0x0000002b,
96 LC_ENCRYPTION_INFO_64 = 0x0000002c,
97 LC_LINKER_OPTION = 0x0000002d,
98 LC_LINKER_OPTIMIZATION_HINT = 0x0000002e,
99 LC_VERSION_MIN_TVOS = 0x0000002f,
100 LC_VERSION_MIN_WATCHOS = 0x00000030,
101 };
102
103 struct LoadCommandHeader {
104 uint32_t cmd;
105 uint32_t cmdsize;
106 };
107
108 struct LoadCommandSegment {
109 char segname[16];
110 uint32_t vmaddr;
111 uint32_t vmsize;
112 uint32_t fileoff;
113 uint32_t filesize;
114 uint32_t maxprot;
115 uint32_t initprot;
116 uint32_t nsects;
117 uint32_t flags;
118 };
119
120 struct LoadCommandSegment64 {
121 char segname[16];
122 uint64_t vmaddr;
123 uint64_t vmsize;
124 uint64_t fileoff;
125 uint64_t filesize;
126 uint32_t maxprot;
127 uint32_t initprot;
128 uint32_t nsects;
129 uint32_t flags;
130 };
131
132 struct Section {
133 char sectname[16];
134 char segname[16];
135 uint32_t addr;
136 uint32_t size;
137 uint32_t offset;
138 uint32_t align;
139 uint32_t reloff;
140 uint32_t nreloc;
141 uint32_t flags;
142 uint32_t reserved1;
143 uint32_t reserved2;
144 };
145
146 struct Section64 {
147 char sectname[16];
148 char segname[16];
149 uint64_t addr;
150 uint64_t size;
151 uint32_t offset;
152 uint32_t align;
153 uint32_t reloff;
154 uint32_t nreloc;
155 uint32_t flags;
156 uint32_t reserved1;
157 uint32_t reserved2;
158 uint32_t reserved3;
159 };
160
161 Ref<FileAccess> fa;
162 bool swap = false;
163
164 uint64_t lc_limit = 0;
165
166 uint64_t exe_limit = 0;
167 uint64_t exe_base = std::numeric_limits<uint64_t>::max(); // Start of first __text section.
168 uint32_t align = 0;
169 uint32_t cputype = 0;
170 uint32_t cpusubtype = 0;
171
172 uint64_t link_edit_offset = 0; // __LINKEDIT segment offset.
173 uint64_t signature_offset = 0; // Load command offset.
174
175 uint32_t seg_align(uint64_t p_vmaddr, uint32_t p_min, uint32_t p_max);
176 bool alloc_signature(uint64_t p_size);
177
178 static inline size_t PAD(size_t s, size_t a) {
179 return (a - s % a);
180 }
181
182public:
183 static bool is_macho(const String &p_path);
184
185 bool open_file(const String &p_path);
186
187 uint64_t get_exe_base();
188 uint64_t get_exe_limit();
189 int32_t get_align();
190 uint32_t get_cputype();
191 uint32_t get_cpusubtype();
192 uint64_t get_size();
193 uint64_t get_code_limit();
194
195 uint64_t get_signature_offset();
196 bool is_signed();
197
198 PackedByteArray get_cdhash_sha1();
199 PackedByteArray get_cdhash_sha256();
200
201 PackedByteArray get_requirements();
202
203 const Ref<FileAccess> get_file() const;
204 Ref<FileAccess> get_file();
205
206 uint64_t get_signature_size();
207 bool set_signature_size(uint64_t p_size);
208};
209
210#endif // MACOS_MACHO_H
211