export netblocks from ipinfo.io

extract_netblocks

import sys
import json

def extract_netblocks(json_file, output_file="netblocks.txt"):
    try:
        # 从JSON文件中读取数据
        with open(json_file, "r") as file:
            data = file.read()

        # 解析JSON数据
        parsed_data = json.loads(data)

        # 遍历prefixes数组，筛选满足条件的netblock字段
        netblocks = []
        for prefix in parsed_data["prefixes"]:
            # if prefix["domain"] == "cloudflare.com":
            netblocks.append(prefix["netblock"])

        # 导出为文本文件
        with open(output_file, "w") as file:
            file.write("\n".join(netblocks))

        print(f"提取并导出成功！已将netblocks保存到文件 {output_file} 中。")
    except FileNotFoundError:
        print("错误：找不到指定的JSON文件，请确保文件路径正确。")
    except json.JSONDecodeError:
        print("错误：JSON文件解析失败，请检查文件内容是否符合JSON格式。")

# 检查命令行参数
if len(sys.argv) < 2:
    print("错误：请输入JSON文件路径作为参数。比如说: python3 netblock_extractor.py data.json [-o]")
else:
    json_file = sys.argv[1]
    output_file = "netblocks.txt"

    if len(sys.argv) > 3 and sys.argv[2] == "-o":
        output_file = sys.argv[3]

    extract_netblocks(json_file, output_file)