auth.py 文件源码

def get_client_ip(request):
    access_route = get_access_route(request)

    if len(access_route) == 1:
        return access_route[0]
    expression = """
        (^(?!(?:[0-9]{1,3}\.){3}[0-9]{1,3}$).*$)|  # will match non valid ipV4
        (^127\.0\.0\.1)|  # will match 127.0.0.1
        (^10\.)|  # will match 10.0.0.0 - 10.255.255.255 IP-s
        (^172\.1[6-9]\.)|  # will match 172.16.0.0 - 172.19.255.255 IP-s
        (^172\.2[0-9]\.)|  # will match 172.20.0.0 - 172.29.255.255 IP-s
        (^172\.3[0-1]\.)|  # will match 172.30.0.0 - 172.31.255.255 IP-s
        (^192\.168\.)  # will match 192.168.0.0 - 192.168.255.255 IP-s
    """
    regex = re.compile(expression, re.X)
    for ip in access_route:
        if not ip:
            # it's possible that the first value from X_FORWARDED_FOR
            # will be null, so we need to pass that value
            continue
        if regex.search(ip):
            continue
        else:
            return ip