crash with openssl 1.1.1u

[charlesyju]

I added the include_dirs and library_dirs in setup.py to point to openssl 1.1.1u and built sslkeylog successfully on MacOS 13.3. However it crash with a simple test.

import sslkeylog
sslkeylog.set_keylog("secrets.log")
req = requests.get('https://baidu.com')

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x000000000000001c
Exception Codes:       0x0000000000000001, 0x000000000000001c

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [84537]

VM Region Info: 0x1c is not in any region.  Bytes before following region: 140737488138212
      REGION TYPE                    START - END         [ VSIZE] PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->  
      shared memory            7ffffffcb000-7ffffffcc000 [    4K] r-x/r-x SM=SHM  

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   libcrypto.3.dylib             	       0x108c21c40 OPENSSL_sk_value + 25
1   _sslkeylog.cpython-311-darwin.so	       0x1081fdb16 sslkeylog_set_keylog_callback + 70 (_sslkeylog.c:283)
2   Python                        	       0x107628834 cfunction_call + 90
3   Python                        	       0x1075d8e99 _PyObject_MakeTpCall + 126
4   Python                        	       0x1076d18ab _PyEval_EvalFrameDefault + 57269
5   Python                        	       0x1076d7921 _PyEval_Vector + 92
6   Python                        	       0x1075d90d7 _PyObject_FastCallDictTstate + 87
7   Python                        	       0x107649fb5 slot_tp_new + 191
8   Python                        	       0x1076431b8 type_call + 69
9   Python                        	       0x1075d8e99 _PyObject_MakeTpCall + 126
10  Python                        	       0x1076d18ab _PyEval_EvalFrameDefault + 57269
11  Python                        	       0x1076d7921 _PyEval_Vector + 92

[segevfiner]

Then it might very well be that the actual OpenSSL used by your Python install is different. Check out what ssl.OPENSSL_VERSION says for example.

[charlesyju]

import ssl
print(ssl.OPENSSL_VERSION)

gives the output:

OpenSSL 1.1.1u 30 May 2023

[segevfiner]

So another guess would be that the build _sslkeylog dylib is linked with one copy of OpenSSL while Python's _ssl is linked with another. You can check that out using otool -L.