1#!/usr/local/bin/python3 2import json 3import os 4import socket 5import time 6from ctypes import cdll 7from ctypes import get_errno 8from ctypes.util import find_library 9from typing import List 10from typing import Optional 11 12 13class ToolsHelper(object): 14 NETSTAT_PATH = "/usr/bin/netstat" 15 IFCONFIG_PATH = "/sbin/ifconfig" 16 17 @classmethod 18 def get_output(cls, cmd: str, verbose=False) -> str: 19 if verbose: 20 print("run: '{}'".format(cmd)) 21 return os.popen(cmd).read() 22 23 @classmethod 24 def print_output(cls, cmd: str, verbose=True): 25 if verbose: 26 print("======= {} =====".format(cmd)) 27 print(cls.get_output(cmd)) 28 if verbose: 29 print() 30 31 @classmethod 32 def print_net_debug(cls): 33 cls.print_output("ifconfig") 34 cls.print_output("netstat -rnW") 35 36 @classmethod 37 def set_sysctl(cls, oid, val): 38 cls.get_output("sysctl {}={}".format(oid, val)) 39 40 @classmethod 41 def get_routes(cls, family: str, fibnum: int = 0): 42 family_key = {"inet": "-4", "inet6": "-6"}.get(family) 43 out = cls.get_output( 44 "{} {} -rn -F {} --libxo json".format(cls.NETSTAT_PATH, family_key, fibnum) 45 ) 46 js = json.loads(out) 47 js = js["statistics"]["route-information"]["route-table"]["rt-family"] 48 if js: 49 return js[0]["rt-entry"] 50 else: 51 return [] 52 53 @classmethod 54 def get_linklocals(cls): 55 ret = {} 56 ifname = None 57 ips = [] 58 for line in cls.get_output(cls.IFCONFIG_PATH).splitlines(): 59 if line[0].isalnum(): 60 if ifname: 61 ret[ifname] = ips 62 ips = [] 63 ifname = line.split(":")[0] 64 else: 65 words = line.split() 66 if words[0] == "inet6" and words[1].startswith("fe80"): 67 # inet6 fe80::1%lo0 prefixlen 64 scopeid 0x2 68 ip = words[1].split("%")[0] 69 scopeid = int(words[words.index("scopeid") + 1], 16) 70 ips.append((ip, scopeid)) 71 if ifname: 72 ret[ifname] = ips 73 return ret 74