有关IPV6

苹果在6月1日要求上线app必须支持ipv6，具体链接
Supporting IPv6 DNS64/NAT64 Networks
具体中文版本见：
针对苹果iOS最新审核要求为应用兼容IPv6

写了一个脚本检测是否使用ipv4的非法方法：
检查第三方库的脚本，使用方法: python ipv6_api_scan.py TO_BE_CHECKED_DIR >> result.log

具体脚本代码：

# -- coding: utf-8 -*-

import zipfile
import os
import re
import fnmatch
import itertools
import subprocess
import sys
import csv


#代码所在路径 需要设置
codepath = None

#App 所在位置
apppath = None

def isMachOFormat(path):
    if not os.path.exists(path):
        return False;

    f = open(path,'rb');
    if f:
        data=f.read();
        fsize=f.tell();
        f.close();
        if fsize > 8 :
            ma=data[0].encode('hex')
            mb=data[1].encode('hex')
            mc=data[2].encode('hex')
            md=data[3].encode('hex')          
            prefix=ma+mb+mc+md;
            if prefix == "cafebabe":
                return True;
    return False;


def scanFiles(path):
    if not os.path.exists(path):
        print "文件路径:"+path+"不存在!"
        return -1;
    print "开始check文件(夹):"+path
    for parent, dirnames, filenames in os.walk(path):
          for filename in filenames:                        #输出文件信
            # print "filename is:" + filename
            fullPath=os.path.join(parent,filename);
            isMachO = isMachOFormat(fullPath)
            if isMachO and not os.path.islink(fullPath):
                nmCheck(fullPath, filename)

   

def nmCheck(path,filename):
    func_list=["inet_addr","inet_aton","inet_lnaof","inet_makeaddr","inet_netof","inet_network","inet_ntoa","inet_ntoa_r","bindresvport","getipv4sourcefilter","setipv4sourcefilter","SCNetworkReachabilityCreateWithAddress"];
    str_log_name= path + ".log";
    if os.path.exists(str_log_name):
        os.system("rm -rf " + str_log_name)

    cmd_touch="touch " + str_log_name;
    
    items = set();

    os.system(cmd_touch);
    for func_name in func_list:
        cmd_nm="nm " + path + " | grep " + func_name + " >> "+ path + ".log";
        os.system(cmd_nm);

    f=open(str_log_name);
    if f:
        str_func=f.read()
        str_func=str_func.replace("                 U _", "");
        item_list=str_func.split("\n")
        for item in item_list:
            if len(item) > 0:
                items.add(item)
        f.close()

    if len(items) > 0:
        print "检查Library:" + filename#输出文件路径信息
        print "发现IPV6非法函数：";
        for item in items:
            print item;
        print "\r\n"
    # else:
    #     print filename+"是IPV6兼容的！\r\n"

    if os.path.exists(str_log_name):
        os.system("rm " + str_log_name)

if __name__ == '__main__':
    if len(sys.argv) == 1:
        print "usage: python ipv6_api_scan.py to_be_checked_dir"
        print "usage: python ipv6_api_scan.py to_be_checked_dir >> out.log"
    else:
        scanFiles(sys.argv[1])