[Android Termux]: _ffi ImportError: No module named _ffi

[RealYukiSan]

I have encounter error that says: "_ffi ImportError: No module named _ffi" while run python script on Android 14 termux:

Package information:

(.venv) ~ $ pkg info libwolfssl
Package: libwolfssl
Version: 5.7.2
Maintainer: @termux
Installed-Size: 3891 kB
Homepage: https://www.wolfssl.com/
Download-Size: 630 kB
APT-Manual-Installed: yes
APT-Sources: https://mirrors.bfsu.edu.cn/termux/apt/termux-main stable/main aarch64 Packages
Description: A small, fast, portable implementation of TLS/SSL for embedded devices to the cloud

(.venv) ~ $ pip list
Package   Version
--------- -----------
cffi      1.17.1
pip       24.2
pycparser 2.22
wolfssl   5.7.2.post0
(.venv) ~ $

The code

(.venv) ~/d-net $ cat main.py
import socket
import wolfssl

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)

secure_socket = wolfssl.wrap_socket(sock)
secure_socket.connect(("dns.google.com", 443))
secure_socket.write(b"GET / HTTP/1.1\r\n\r\n")
print(secure_socket.read())
secure_socket.close()

(.venv) ~/d-net $

The error:

(.venv) ~ $ cd d-net/
(.venv) ~/d-net $ python main.py
Traceback (most recent call last):
  File "/data/data/com.termux/files/home/d-net/main.py", line 6, in <module>
    secure_socket = wolfssl.wrap_socket(sock)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 976, in wrap_socket
    return SSLSocket(sock=sock, keyfile=keyfile, certfile=certfile,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 407, in __init__
    self._context = SSLContext(ssl_version, server_side)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/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 0x742a00c9a0>
Traceback (most recent call last):
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 167, in __del__
    if getattr(self, 'native_object', _ffi.NULL) != _ffi.NULL:
                                      ^^^^
NameError: name '_ffi' is not defined
Exception ignored in: <function SSLSocket.__del__ at 0x742a00d300>
Traceback (most recent call last):
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 469, in __del__
    self._release_native_object()
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 472, in _release_native_object
    if getattr(self, 'native_object', _ffi.NULL) != _ffi.NULL:
                                      ^^^^
NameError: name '_ffi' is not defined
(.venv) ~/d-net $

related link: wolfssl forum

[RealYukiSan]

Also happend inside the python interpreter:

(.venv) ~/d-net $ python
Python 3.12.7 (main, Oct  6 2024, 15:06:14) [Clang 18.0.2 (https://android.googlesource.com/toolchain/llvm-project d8003a456 on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import wolfssl
>>> import socket
>>> sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM, 0)
>>> wolfssl.wrap_socket(sock)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 976, in wrap_socket
    return SSLSocket(sock=sock, keyfile=keyfile, certfile=certfile,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 407, in __init__
    self._context = SSLContext(ssl_version, server_side)
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/data/com.termux/files/home/d-net/.venv/lib/python3.12/site-packages/wolfssl/__init__.py", line 144, in __init__
    _lib.wolfSSL_Init()
    ^^^^
NameError: name '_lib' is not defined
>>>

[lealem47]

Hi @RealYukiSan,

I saw that you opened a different issue here https://github.com/wolfSSL/wolfssl-py/issues/57 where it looks like you've gotten further along. Does that mean you have resolved this problem?

[RealYukiSan]

Not yet, the different issue run on my laptop.