#!/usr/bin/env python

import os
import sys
import struct

def read_proc_data(pid):
    '''Liest Daten einer Prozess-ID aus /proc aus und zeigt diese an'''

    proc_dir = '/proc/{0}'.format(pid)
    
    if not os.path.exists(proc_dir):
        return "Prozess mit PID {0} existiert nicht.".format(pid)
    
    # Lese die Daten aus dem /proc-Verzeichnis
    for filename in os.listdir(proc_dir):
        file_path = os.path.join(proc_dir, filename)
        
        # Ueberspringe Dateien, die keine Informationen enthalten
        if filename in [".", "..", "task", "mem", "cwd", "exe", "pagemap"]:
            continue
        
        try:
            if filename in ("environ", "cmdline"):
                with open(file_path, "rb") as file:
                    environ_data = file.read()
                    print("{0}:".format(filename))
                    for line in environ_data.decode("utf-8", errors="replace").split("\x00"):
                        if line:
                            print(line)

                    print()
            elif filename == "auxv":
                with open(file_path, "rb") as file:
                    auxv_data = file.read()
                    print("{0}:".format(filename))
                    i = 0
                    while i < len(auxv_data):
                        entry_type, entry_value = struct.unpack("qq", auxv_data[i:i+16])
                        print("Type: {0}, Value: {1}".format(entry_type, entry_value))
                        i += 16
                    print()
            else:
                with open(file_path, "r") as file:
                    print("{0}:".format(filename))
                    for line in file:
                        line = line.rstrip("\n")
                        if line:
	                        print(line)
                    print()

        except (IOError, UnicodeDecodeError):
            pass
    
    return None

if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Bitte geben Sie die Prozess-ID (PID) als Argument an.")
        sys.exit(1)
    
    try:
        pid = int(sys.argv[1])
    except ValueError:
        print("Ungueltige Prozess-ID (PID).")
        sys.exit(1)
    
    read_proc_data(pid)