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python 编译成 so 加密

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使用 cythonpython 编译成 so 加密

准备

cython 环境

pip install cython
yum install -y gcc python-devel

测试代码

testc.py

import os


def realpath():
   print  os.path.realpath('.')

testc.py copy到 /usr/lib/python2.7/site-packages/,py测试

[root@vm-21b-01vnm pycompile]# python
Python 2.7.5 (default, Aug  4 2017, 00:39:18)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import testc
>>> testc.realpath()
/root/pycompile
>>>

手工编译

# cd /usr/lib/python2.7/site-packages/
# mv testc.pyc /tmp/
# cython testc.py
# ll | grep testc
-rw-r--r--   1 root root 128660 Oct 11 10:13 testc.c
-rw-r--r--   1 root root     60 Oct 11 10:10 testc.py
# gcc -c -fPIC -I/usr/include/python2.7/ testc.c
# ll | grep testc
-rw-r--r--   1 root root 128660 Oct 11 10:13 testc.c
-rw-r--r--   1 root root  46168 Oct 11 10:13 testc.o
-rw-r--r--   1 root root     60 Oct 11 10:10 testc.py
# gcc -shared testc.o -o testc.so
# ll | grep testc
-rw-r--r--   1 root root 128660 Oct 11 10:13 testc.c
-rw-r--r--   1 root root  46168 Oct 11 10:13 testc.o
-rw-r--r--   1 root root     60 Oct 11 10:10 testc.py
-rwxr-xr-x   1 root root  47544 Oct 11 10:13 testc.so
# ll | grep testc
-rw-r--r--   1 root root 128660 Oct 11 10:13 testc.c
-rw-r--r--   1 root root  46168 Oct 11 10:13 testc.o
-rw-r--r--   1 root root     60 Oct 11 10:10 testc.py
-rwxr-xr-x   1 root root  47544 Oct 11 10:13 testc.so
# mv testc.c testc.o testc.py /tmp/
# ll | grep testc
-rwxr-xr-x   1 root root  47544 Oct 11 10:13 testc.so

测试

# python
Python 2.7.5 (default, Aug  4 2017, 00:39:18)
[GCC 4.8.5 20150623 (Red Hat 4.8.5-16)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import testc
>>> testc.realpath()
/usr/lib/python2.7/site-packages

自动编译

方法一

testc.py 移动到 /usr/lib/python2.7/site-packages/testc 目录下,创建 setup.py 文件:

from setuptools import setup
from Cython.Build import cythonize


setup(
    ext_modules = cythonize("testc.py")
)

运行:

# ll
total 8
-rw-r--r-- 1 root root 119 Oct 11 10:18 setup.py
-rw-r--r-- 1 root root  60 Oct 11 10:10 testc.py
# python setup.py build_ext --inplace
Compiling testc.py because it changed.
[1/1] Cythonizing testc.py
running build_ext
building 'testc' extension
gcc -pthread -fno-strict-aliasing -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -DNDEBUG -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic -D_GNU_SOURCE -fPIC -fwrapv -fPIC -I/usr/include/python2.7 -c testc.c -o build/temp.linux-x86_64-2.7/testc.o
creating build/lib.linux-x86_64-2.7
gcc -pthread -shared -Wl,-z,relro build/temp.linux-x86_64-2.7/testc.o -L/usr/lib64 -lpython2.7 -o build/lib.linux-x86_64-2.7/testc.so
copying build/lib.linux-x86_64-2.7/testc.so ->
# ll
total 228
drwxr-xr-x 3 root root     35 Oct 11 10:19 build
-rw-r--r-- 1 root root    119 Oct 11 10:18 setup.py
-rw-r--r-- 1 root root 128849 Oct 11 10:19 testc.c
-rw-r--r-- 1 root root     60 Oct 11 10:10 testc.py
-rwxr-xr-x 1 root root  91448 Oct 11 10:19 testc.so
#

方法二

创建 setup.py

#!/usr/bin/env python
'''
ref:
  https://cython.readthedocs.io/en/latest/src/userguide/source_files_and_compilation.html
how to use:
  python setup.py build_ext --inplace
'''

import os

from distutils.core import setup, Extension
from Cython.Build import cythonize


exclude_files = ["__init__.py", "models.py"]
exclude_folders = ["migrations"]
include_folders = ["home_application"]
build_dir = "build"
build_tmp_dir = build_dir + "/temp"
root_path = os.getcwd()


# get need cythonize files, format like: ["<path>/<file1.py>", "<path>/<file2.py>"]
py_files = []


def _folder_files(root_dir):
    for root, dirs, files in os.walk(root_dir):
        relative_paths = root.replace(root_path, "").lstrip(os.sep)
        name = relative_paths.replace(os.sep, ".")

        is_exclude_folder = False
        for _ef in exclude_folders:
            if _ef in name:
                is_exclude_folder = True
                break
        if is_exclude_folder:
            continue

        for f in files:
            if f not in exclude_files and f.endswith(".py"):
                py_files.append(os.path.join(relative_paths, f))


def get_files():
    for include_folder in include_folders:
        root_dir = os.path.join(root_path, include_folder)
        _folder_files(root_dir)


# if __name__ == '__main__':
#     get_files()
#     for i in py_files:
#         print i


try:
    get_files()
    # extensions = []
    # for i in files:
    #     extensions.append(Extension(i[0], i[1]))
    ext_modules = cythonize(py_files)
except ImportError:
    ext_modules = None


setup(
    ext_modules=ext_modules,
    script_args=["build_ext", "-b", build_dir, "-t", build_tmp_dir]
)

执行:

python setup.py build_ext --inplace

注意:

  • 使用不同的python编译,会存在不兼容现象,需要清理pyc文件:find . -type f -name "*.pyc" | xargs -n1 rm
  • cp -r build/<..>/* .
  • find . -type f -name «*.c» | xargs -n1 rm
  • find . -type f -name «*.py» | grep -v «init.py» | grep -v «migrations» | grep -v «models.py» | xargs -n1 rm

参考

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