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#!/usr/bin/env python3
# Get non-system DLL dependencies
import pefile
import os
import os.path
import sys
def is_system(filename):
"""Return true if the file is a system file. Very ad-hoc."""
return filename.startswith('/c/Windows')
def get_imports(filename):
"""Return list of dll imports"""
if is_system(filename):
return []
with pefile.PE(filename) as pe:
try:
imports = pe.DIRECTORY_ENTRY_IMPORT
except AttributeError:
imports = []
return [e.dll.decode() for e in imports]
def search_dll(name, libraries_path):
"""Search :param name: in :param libraries_path:"""
for path in libraries_path:
filename = os.path.join(path, name)
if os.path.isfile(filename):
return filename
return None
def get_dependencies(name, libraries_path, cache):
"""Return the non-system dll dependencies of :param name:"""
deps = get_imports(name)
res = []
for lib in deps:
if lib in cache:
continue
# Search on the path
filename = search_dll(lib, libraries_path)
# Always add in the cache
cache[lib] = filename
if filename is not None:
if not is_system(filename):
res.append(filename)
res.extend(get_dependencies(filename, libraries_path, cache))
return res
if __name__ == '__main__':
if len(sys.argv) != 2:
print('usage: {} ldd-file'.format(sys.argv[0]))
sys.exit(1)
libraries_path = os.environ['PATH'].split(os.pathsep)
filename = sys.argv[1]
cache = {}
res = get_dependencies(filename, libraries_path, cache)
for f in res:
print(f)
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