lilidan / oceval Goto Github PK

just like

    NSString *input = @"NSLog(@\"say hello\");";
    [OCEval eval:input];

or

    NSString *input = @"NSLog(@""say hello"");";
    [OCEval eval:input];

both got error. so how to eval string?

源码还没有细抠，逐步断点去理解。我大致的理解是解析oc语法，nsinvoke实现消息转发和aspects实现method swizling，对吗？
nsinvoke实现消息转发和aspects实现method swizling在上线审核上都没问题。
应该可以使用在线上吧？

如题，当原有函数的上下文使用了全局变量类如 NSMutableDictionary *someXX = @{}.mutableCopy 这种，替换后的函数文本应该怎么设置才能获取到这个 someXX

2022-04-24 10:27:57.356288+0800 OCEvalDemo[22215:14541831] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[NSInvocation _invocationWithMethodSignature:frame:]: method signature argument cannot be nil'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff203fbbb4 __exceptionPreprocess + 242
1 libobjc.A.dylib 0x00007fff2019ebe7 objc_exception_throw + 48
2 CoreFoundation 0x00007fff203fe941 +[NSInvocation invocationWithMethodSignature:] + 0
3 OCEval 0x0000000103b1fc8f +[OCMethodNode(invoke) invokeWithCaller:selectorName:argments:] + 175
4 OCEval 0x0000000103b32c1c -[OCPropertyNode excuteWithCtx:] + 604
5 OCEval 0x0000000103b34ad1 -[OCReturnNode excuteWithCtx:] + 1345
6 OCEval 0x0000000103b1f47e -[OCLineNode excuteWithCtx:] + 398
7 OCEval 0x0000000103b3523a -[OCScopeNode excuteWithCtx:] + 362
8 OCEval 0x0000000103b169b7 -[OCControlNode excuteWithCtx:] + 599
9 OCEval 0x0000000103b3523a -[OCScopeNode excuteWithCtx:] + 362
10 OCEval 0x0000000103b35407 -[OCRootNode excuteWithCtx:] + 87
11 OCEval 0x0000000103b17815 __61+[OCEval hookClass:selector:argNames:isClass:implementation:]block_invoke + 725
12 CoreFoundation 0x00007fff2040247c invoking + 140
13 CoreFoundation 0x00007fff203ff872 -[NSInvocation invoke] + 305
14 CoreFoundation 0x00007fff203ffb05 -[NSInvocation invokeWithTarget:] + 70
15 OCEval 0x0000000103b0a490 -[AspectIdentifier invokeWithInfo:] + 752
16 OCEval 0x0000000103b0e699 ASPECTS_ARE_BEING_CALLED + 2505
17 CoreFoundation 0x00007fff203ffe57 forwarding + 820
18 CoreFoundation 0x00007fff204021e8 _CF_forwarding_prep_0 + 120
19 UIKitCore 0x00007fff25271009 -[UITableView numberOfRowsInSection:] + 62
20 UIKitCore 0x00007fff2528726e -[UISectionRowData refreshWithSection:tableView:tableViewRowData:] + 2068
21 UIKitCore 0x00007fff2528ac18 -[UITableViewRowData numberOfRows] + 64
22 UIKitCore 0x00007fff2523e982 -[UITableView noteNumberOfRowsChanged] + 112
23 UIKitCore 0x00007fff2523d4e6 -[UITableView reloadData] + 1021
24 CoreFoundation 0x00007fff2040247c invoking + 140
25 CoreFoundation 0x00007fff203ff872 -[NSInvocation invoke] + 305
26 OCEval 0x0000000103b2abb9 +[OCMethodNode(invoke) invokeWithInvocation:argments:] + 2025
27 OCEval 0x0000000103b1fd6f +[OCMethodNode(invoke) invokeWithCaller:selectorName:argments:] + 399
28 OCEval 0x0000000103b2c3ea -[OCMethodNode excuteWithCtx:] + 522
29 OCEval 0x0000000103b1f3e8 -[OCLineNode excuteWithCtx:] + 248
30 OCEval 0x0000000103b3523a -[OCScopeNode excuteWithCtx:] + 362
31 OCEval 0x0000000103b16a36 -[OCControlNode excuteWithCtx:] + 726
32 OCEval 0x0000000103b3523a -[OCScopeNode excuteWithCtx:] + 362
33 OCEval 0x0000000103b12bb8 JPBlockInterpreter + 1592
34 OCEval 0x0000000103b374b9 ffi_closure_unix64_inner + 487
35 OCEval 0x0000000103b3a16a ffi_closure_unix64 + 72
36 Foundation 0x00007fff207df16b NSBLOCKOPERATION_IS_CALLING_OUT_TO_A_BLOCK + 7
37 Foundation 0x00007fff207df063 -[NSBlockOperation main] + 98
38 Foundation 0x00007fff207e2073 NSOPERATION_IS_INVOKING_MAIN + 17
39 Foundation 0x00007fff207de2b0 -[NSOperation start] + 785
40 Foundation 0x00007fff207e29c7 NSOPERATIONQUEUE_IS_STARTING_AN_OPERATION + 17
41 Foundation 0x00007fff207e250c __NSOQSchedule_f + 182
42 libdispatch.dylib 0x00000001039d6bf7 _dispatch_block_async_invoke2 + 83
43 libdispatch.dylib 0x00000001039c7c0c _dispatch_client_callout + 8
44 libdispatch.dylib 0x00000001039d6376 _dispatch_main_queue_callback_4CF + 1195
45 CoreFoundation 0x00007fff2036985d CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE + 9
46 CoreFoundation 0x00007fff203640ba __CFRunLoopRun + 2772
47 CoreFoundation 0x00007fff20363103 CFRunLoopRunSpecific + 567
48 GraphicsServices 0x00007fff2c851cd3 GSEventRunModal + 139
49 UIKitCore 0x00007fff24ffbe63 -[UIApplication _run] + 928
50 UIKitCore 0x00007fff25000a53 UIApplicationMain + 101
51 OCEvalDemo 0x000000010382ebb8 main + 104
52 dyld 0x0000000103844e1e start_sim + 10
53 ??? 0x0000000000000001 0x0 + 1
)
libc++abi: terminating with uncaught exception of type NSException
dyld4 config: DYLD_ROOT_PATH=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot DYLD_LIBRARY_PATH=/Users/caoliang/Library/Developer/Xcode/DerivedData/OCEvalDemo-cbbuxvksytvzbdhkdtwawbifbzoz/Build/Products/Debug-iphonesimulator:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/system/introspection DYLD_INSERT_LIBRARIES=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libBacktraceRecording.dylib:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/usr/lib/libMainThreadChecker.dylib:/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Library/Developer/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/Developer/Library/PrivateFrameworks/DTDDISupport.framework/libViewDebuggerSupport.dylib DYLD_FRAMEWORK_PATH=/Users/caoliang/Library/Developer/Xcode/DerivedData/OCEvalDemo-cbbuxvksytvzbdhkdtwawbifbzoz/Build/Products/Debug-iphonesimulator
*** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[NSInvocation _invocationWithMethodSignature:frame:]: method signature argument cannot be nil'
terminating with uncaught exception of type NSException
CoreSimulator 776.4 - Device: iPhone 13 Pro Max (B2851D2D-EA0B-4ABB-A2C0-53CA3C7E0DBB) - Runtime: iOS 15.0 (19A339) - DeviceType: iPhone 13 Pro Max
辛苦有时间看下