lddrec.py

#!/usr/bin/env python3

import os
import subprocess

def process_ldd_out(output):
    libs = []
    for line in output.splitlines():
        line = line.strip()
        if line == '' or line == 'statically linked': continue
        try: 
            lib = line[line.index('>') + 1 : line.index('(')].strip()
        except ValueError:
            lib = line[0 : line.index('(')].strip()
        libs.append(lib)
    return libs


def get_ldd_libs(library):
	ldd = subprocess.run(["ldd", library], capture_output=True)
	return process_ldd_out(ldd.stdout.decode('utf-8'))


def search(start):
    stack = [start]
    visited = set()
        
    while len(stack) > 0:
	    current = stack.pop()
	    if current not in visited:
		    print(current)
		    visited.add(current)
		    for child in get_ldd_libs(current):
			    stack.append(child)	


if __name__ == '__main__':
    import sys
    if len(sys.argv) < 2:
        print(f"Usage: {sys.argv[0]} <dynamically linked lib/exe>")
        exit(0)
    search(sys.argv[1])