-
Notifications
You must be signed in to change notification settings - Fork 891
/
class-dump.m
336 lines (293 loc) · 15.5 KB
/
class-dump.m
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
// -*- mode: ObjC -*-
// This file is part of class-dump, a utility for examining the Objective-C segment of Mach-O files.
// Copyright (C) 1997-2019 Steve Nygard.
#include <stdio.h>
#include <libc.h>
#include <unistd.h>
#include <getopt.h>
#include <stdlib.h>
#include <mach-o/arch.h>
#import "CDClassDump.h"
#import "CDFindMethodVisitor.h"
#import "CDClassDumpVisitor.h"
#import "CDMultiFileVisitor.h"
#import "CDFile.h"
#import "CDMachOFile.h"
#import "CDFatFile.h"
#import "CDFatArch.h"
#import "CDSearchPathState.h"
void print_usage(void)
{
fprintf(stderr,
"class-dump %s\n"
"Usage: class-dump [options] <mach-o-file>\n"
"\n"
" where options are:\n"
" -a show instance variable offsets\n"
" -A show implementation addresses\n"
" --arch <arch> choose a specific architecture from a universal binary (ppc, ppc64, i386, x86_64, armv6, armv7, armv7s, arm64)\n"
" -C <regex> only display classes matching regular expression\n"
" -f <str> find string in method name\n"
" -H generate header files in current directory, or directory specified with -o\n"
" -I sort classes, categories, and protocols by inheritance (overrides -s)\n"
" -o <dir> output directory used for -H\n"
" -r recursively expand frameworks and fixed VM shared libraries\n"
" -s sort classes and categories by name\n"
" -S sort methods by name\n"
" -t suppress header in output, for testing\n"
" --list-arches list the arches in the file, then exit\n"
" --sdk-ios specify iOS SDK version (will look for /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS<version>.sdk\n"
" or /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS<version>.sdk)\n"
" --sdk-mac specify Mac OS X version (will look for /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX<version>.sdk\n"
" or /Developer/SDKs/MacOSX<version>.sdk)\n"
" --sdk-root specify the full SDK root path (or use --sdk-ios/--sdk-mac for a shortcut)\n"
,
CLASS_DUMP_VERSION
);
}
#define CD_OPT_ARCH 1
#define CD_OPT_LIST_ARCHES 2
#define CD_OPT_VERSION 3
#define CD_OPT_SDK_IOS 4
#define CD_OPT_SDK_MAC 5
#define CD_OPT_SDK_ROOT 6
#define CD_OPT_HIDE 7
int main(int argc, char *argv[])
{
@autoreleasepool {
NSString *searchString;
BOOL shouldGenerateSeparateHeaders = NO;
BOOL shouldListArches = NO;
BOOL shouldPrintVersion = NO;
CDArch targetArch;
BOOL hasSpecifiedArch = NO;
NSString *outputPath;
NSMutableSet *hiddenSections = [NSMutableSet set];
int ch;
BOOL errorFlag = NO;
struct option longopts[] = {
{ "show-ivar-offsets", no_argument, NULL, 'a' },
{ "show-imp-addr", no_argument, NULL, 'A' },
{ "match", required_argument, NULL, 'C' },
{ "find", required_argument, NULL, 'f' },
{ "generate-multiple-files", no_argument, NULL, 'H' },
{ "sort-by-inheritance", no_argument, NULL, 'I' },
{ "output-dir", required_argument, NULL, 'o' },
{ "recursive", no_argument, NULL, 'r' },
{ "sort", no_argument, NULL, 's' },
{ "sort-methods", no_argument, NULL, 'S' },
{ "arch", required_argument, NULL, CD_OPT_ARCH },
{ "list-arches", no_argument, NULL, CD_OPT_LIST_ARCHES },
{ "suppress-header", no_argument, NULL, 't' },
{ "version", no_argument, NULL, CD_OPT_VERSION },
{ "sdk-ios", required_argument, NULL, CD_OPT_SDK_IOS },
{ "sdk-mac", required_argument, NULL, CD_OPT_SDK_MAC },
{ "sdk-root", required_argument, NULL, CD_OPT_SDK_ROOT },
{ "hide", required_argument, NULL, CD_OPT_HIDE },
{ NULL, 0, NULL, 0 },
};
if (argc == 1) {
print_usage();
exit(0);
}
CDClassDump *classDump = [[CDClassDump alloc] init];
while ( (ch = getopt_long(argc, argv, "aAC:f:HIo:rRsSt", longopts, NULL)) != -1) {
switch (ch) {
case CD_OPT_ARCH: {
NSString *name = [NSString stringWithUTF8String:optarg];
targetArch = CDArchFromName(name);
if (targetArch.cputype != CPU_TYPE_ANY)
hasSpecifiedArch = YES;
else {
fprintf(stderr, "Error: Unknown arch %s\n\n", optarg);
errorFlag = YES;
}
break;
}
case CD_OPT_LIST_ARCHES:
shouldListArches = YES;
break;
case CD_OPT_VERSION:
shouldPrintVersion = YES;
break;
case CD_OPT_SDK_IOS: {
NSString *root = [NSString stringWithUTF8String:optarg];
//NSLog(@"root: %@", root);
NSString *str;
if ([[NSFileManager defaultManager] fileExistsAtPath: @"/Applications/Xcode.app"]) {
str = [NSString stringWithFormat:@"/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS%@.sdk", root];
} else if ([[NSFileManager defaultManager] fileExistsAtPath: @"/Developer"]) {
str = [NSString stringWithFormat:@"/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS%@.sdk", root];
}
classDump.sdkRoot = str;
break;
}
case CD_OPT_SDK_MAC: {
NSString *root = [NSString stringWithUTF8String:optarg];
//NSLog(@"root: %@", root);
NSString *str;
if ([[NSFileManager defaultManager] fileExistsAtPath: @"/Applications/Xcode.app"]) {
str = [NSString stringWithFormat:@"/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX%@.sdk", root];
} else if ([[NSFileManager defaultManager] fileExistsAtPath: @"/Developer"]) {
str = [NSString stringWithFormat:@"/Developer/SDKs/MacOSX%@.sdk", root];
}
classDump.sdkRoot = str;
break;
}
case CD_OPT_SDK_ROOT: {
NSString *root = [NSString stringWithUTF8String:optarg];
//NSLog(@"root: %@", root);
classDump.sdkRoot = root;
break;
}
case CD_OPT_HIDE: {
NSString *str = [NSString stringWithUTF8String:optarg];
if ([str isEqualToString:@"all"]) {
[hiddenSections addObject:@"structures"];
[hiddenSections addObject:@"protocols"];
} else {
[hiddenSections addObject:str];
}
break;
}
case 'a':
classDump.shouldShowIvarOffsets = YES;
break;
case 'A':
classDump.shouldShowMethodAddresses = YES;
break;
case 'C': {
NSError *error;
NSRegularExpression *regularExpression = [NSRegularExpression regularExpressionWithPattern:[NSString stringWithUTF8String:optarg]
options:(NSRegularExpressionOptions)0
error:&error];
if (regularExpression != nil) {
classDump.regularExpression = regularExpression;
} else {
fprintf(stderr, "class-dump: Error with regular expression: %s\n\n", [[error localizedFailureReason] UTF8String]);
errorFlag = YES;
}
// Last one wins now.
break;
}
case 'f': {
searchString = [NSString stringWithUTF8String:optarg];
break;
}
case 'H':
shouldGenerateSeparateHeaders = YES;
break;
case 'I':
classDump.shouldSortClassesByInheritance = YES;
break;
case 'o':
outputPath = [NSString stringWithUTF8String:optarg];
break;
case 'r':
classDump.shouldProcessRecursively = YES;
break;
case 's':
classDump.shouldSortClasses = YES;
break;
case 'S':
classDump.shouldSortMethods = YES;
break;
case 't':
classDump.shouldShowHeader = NO;
break;
case '?':
default:
errorFlag = YES;
break;
}
}
if (errorFlag) {
print_usage();
exit(2);
}
if (shouldPrintVersion) {
printf("class-dump %s compiled %s\n", CLASS_DUMP_VERSION, __DATE__ " " __TIME__);
exit(0);
}
if (optind < argc) {
NSString *arg = [NSString stringWithFileSystemRepresentation:argv[optind]];
NSString *executablePath = [arg executablePathForFilename];
if (shouldListArches) {
if (executablePath == nil) {
printf("none\n");
} else {
CDSearchPathState *searchPathState = [[CDSearchPathState alloc] init];
searchPathState.executablePath = executablePath;
id macho = [CDFile fileWithContentsOfFile:executablePath searchPathState:searchPathState];
if (macho == nil) {
printf("none\n");
} else {
if ([macho isKindOfClass:[CDMachOFile class]]) {
printf("%s\n", [[macho archName] UTF8String]);
} else if ([macho isKindOfClass:[CDFatFile class]]) {
printf("%s\n", [[[macho archNames] componentsJoinedByString:@" "] UTF8String]);
}
}
}
} else {
if (executablePath == nil) {
fprintf(stderr, "class-dump: Input file (%s) doesn't contain an executable.\n", [arg fileSystemRepresentation]);
exit(1);
}
classDump.searchPathState.executablePath = [executablePath stringByDeletingLastPathComponent];
CDFile *file = [CDFile fileWithContentsOfFile:executablePath searchPathState:classDump.searchPathState];
if (file == nil) {
NSFileManager *defaultManager = [NSFileManager defaultManager];
if ([defaultManager fileExistsAtPath:executablePath]) {
if ([defaultManager isReadableFileAtPath:executablePath]) {
fprintf(stderr, "class-dump: Input file (%s) is neither a Mach-O file nor a fat archive.\n", [executablePath UTF8String]);
} else {
fprintf(stderr, "class-dump: Input file (%s) is not readable (check read permissions).\n", [executablePath UTF8String]);
}
} else {
fprintf(stderr, "class-dump: Input file (%s) does not exist.\n", [executablePath UTF8String]);
}
exit(1);
}
if (hasSpecifiedArch == NO) {
if ([file bestMatchForLocalArch:&targetArch] == NO) {
fprintf(stderr, "Error: Couldn't get local architecture\n");
exit(1);
}
//NSLog(@"No arch specified, best match for local arch is: (%08x, %08x)", targetArch.cputype, targetArch.cpusubtype);
} else {
//NSLog(@"chosen arch is: (%08x, %08x)", targetArch.cputype, targetArch.cpusubtype);
}
classDump.targetArch = targetArch;
classDump.searchPathState.executablePath = [executablePath stringByDeletingLastPathComponent];
NSError *error;
if (![classDump loadFile:file error:&error]) {
fprintf(stderr, "Error: %s\n", [[error localizedFailureReason] UTF8String]);
exit(1);
} else {
[classDump processObjectiveCData];
[classDump registerTypes];
if (searchString != nil) {
CDFindMethodVisitor *visitor = [[CDFindMethodVisitor alloc] init];
visitor.classDump = classDump;
visitor.searchString = searchString;
[classDump recursivelyVisit:visitor];
} else if (shouldGenerateSeparateHeaders) {
CDMultiFileVisitor *multiFileVisitor = [[CDMultiFileVisitor alloc] init];
multiFileVisitor.classDump = classDump;
classDump.typeController.delegate = multiFileVisitor;
multiFileVisitor.outputPath = outputPath;
[classDump recursivelyVisit:multiFileVisitor];
} else {
CDClassDumpVisitor *visitor = [[CDClassDumpVisitor alloc] init];
visitor.classDump = classDump;
if ([hiddenSections containsObject:@"structures"]) visitor.shouldShowStructureSection = NO;
if ([hiddenSections containsObject:@"protocols"]) visitor.shouldShowProtocolSection = NO;
[classDump recursivelyVisit:visitor];
}
}
}
}
exit(0); // avoid costly autorelease pool drain, we’re exiting anyway
}
}