import socket
import urllib.request
import urllib.parse
num = 1

try:
  githubip = urllib.request.urlopen('https://api.github.com/meta')
  githubip = str(githubip.read())
  lines = urllib.request.urlopen('https://github.com/timqian/chinese-independent-blogs/raw/master/blogs-original.csv')
  lines = lines.read().decode().splitlines()
except:
  print('无法访问 Github，请检查网络。')

with open('gh-domains.txt', 'w') as f:
    for line in lines[1:]:
        print(num)
        num = num + 1
        line = line.replace(" ", "").split(',')
        res = urllib.parse.urlparse(line[1])
        domain = res.netloc
        try:
            ip = socket.gethostbyname(domain)
            ip = ip.split('.')
            ip_head = ip[0]+'.'+ip[1]+'.'+ip[2]
            isfind = githubip.find(ip_head)
            if isfind != -1 :
                f.write(domain+"\n")
                print(domain+" 是GH-Pages!")
        except:
            continue