Locally built wolfSSL uses local WolfSSL .so instead of bundling WolfSSL

[laurenzfg]

Hey there!

I want to use wolfssl-py with RSA key exchange. Hence, I built wolfssl with the needed flags (and successfully made use of the combiled .so using a C program).

Unfortunately, building wolfssl-py does not work out as expected.
After running USE_LOCAL_WOLFSSL=/usr/local pip3 install ~/Desktop/wolfssl-py/ a package is installed.

But executing my program fails with

Traceback (most recent call last):
[...]
  File "/home/lgrote/Documents/app/venv/lib64/python3.11/site-packages/wolfssl/__init__.py", line 144, in __init__
    _lib.wolfSSL_Init()
    ^^^^
NameError: name '_lib' is not defined
Exception ignored in: <function SSLContext.__del__ at 0x7fafdad49580>
Traceback (most recent call last):
  File "/home/lgrote/Documents/app/venv/lib64/python3.11/site-packages/wolfssl/__init__.py", line 167, in __del__
    if getattr(self, 'native_object', _ffi.NULL) != _ffi.NULL:
                                      ^^^^
NameError: name '_ffi' is not defined

Process finished with exit code 1

Indeed, the generated folder in site-packages does not contain _ffi.py.

Any help here would be appreciated. Please let me know if you need any additional information.

[embhorn]

Hi @laurenzfg

Please see the prerequisites for wolfssl-py:
https://github.com/wolfSSL/wolfssl-py#compiling

This is usually accomplished by running the setup.py script:
https://github.com/wolfSSL/wolfssl-py/blob/master/setup.py

If you don't want to use the script, try:
pip install cffi

Thanks,
@embhorn - wolfSSL Support

[laurenzfg]

Hey @embhorn,

I really appreciate you getting back to me so fast. Unfortunately, your tips did not help as I had cffi installed already.

I further iterated on the issues and found out that, if ./configure is NOT supplied with --disable-shared and henceforth a .so is installed to \usr\local\lib, wolfssl-py builds and runs just fine using the shared library at runtime. However, the wheel is not self contained as it relies on the shared lib to be present.

I want to build a wheel containing both wolfssl-py and the compiled wolfssl lib. Such a wheel is NOT built if I compile & install wolfssl with ./configure --disable-shared and then run USE_LOCAL_WOLFSSL=1 python3 setup.py bdist_wheel.

For these purposes, I'd love to use the dist target of your Makefile. However, the make folder is not checked into the repo. Is this on purpose?

[embhorn]

Hi @laurenzfg

I've requested a review of this issue by my colleague, @cconlon