IPInfo IP Information Lookup Script

ipinfo.md

ipinfo

Description

ipinfo fetches and parses current or specified IP address information.

Screenshots

Usage

usage: ipinfo [-h] [-p {ipinfo,ifconfig}] [-4 | -6] [hostname]

positional arguments:
  hostname              IP address or hostname to lookup, defaults to the current machine's IP address if omitted

optional arguments:
  -h, --help            show this help message and exit
  -p {ipinfo,ifconfig}, --provider {ipinfo,ifconfig}
                        choose IP lookup service provider
  -4                    Force IPv4
  -6                    Force IPv6

Code

Add this into your shell configuration file (e.g., ~/.bashrc or ~/.zshrc).

# ipinfo fetches and parses current or specified IP address information
# version 3.1.0
function ipinfo() {
    python3 - $@ << EOF
import argparse, json, socket, subprocess, sys

parser = argparse.ArgumentParser(prog="ipinfo")
parser.add_argument("hostname", nargs="?", help="IP address or hostname to lookup, defaults to the current machine's IP address if omitted", default="")
parser.add_argument("-p", "--provider", choices=["ipinfo", "ifconfig"], help="choose IP lookup service provider", default="ifconfig")
ip_family_group = parser.add_mutually_exclusive_group()
ip_family_group.add_argument("-4", action="store_true", help="Force IPv4")
ip_family_group.add_argument("-6", action="store_true", help="Force IPv6")
args = parser.parse_args()

try: ip = socket.getaddrinfo(args.hostname, None, socket.AF_INET6 if args.__dict__["6"] is True else socket.AF_INET if args.__dict__["4"] is True else 0)[0][4][0] if args.hostname != '' else ''
except socket.gaierror: print('Hostname cannot be resolved', file=sys.stderr); sys.exit(1)

PROVIDERS_URL = {"ipinfo": "https://ipinfo.io/{ip}", "ifconfig": "https://ifconfig.co/json?ip={ip}"}
if ip == '': curl_process = subprocess.run(["/usr/bin/curl", "-sSL", "-6" if args.__dict__["6"] is True else "-4" if args.__dict__["4"] is True else "", PROVIDERS_URL[args.provider].format(ip=ip)], capture_output=True)
else: curl_process = subprocess.run(["/usr/bin/curl", "-sSL", PROVIDERS_URL[args.provider].format(ip=ip)], capture_output=True)
if curl_process.returncode != 0: print(f"cURL returned error code {curl_process.returncode}", file=sys.stderr); print(curl_process.stderr.decode().strip(), file=sys.stderr); sys.exit(1)

try: json_result = json.loads(curl_process.stdout.decode())
except json.decoder.JSONDecodeError:
    print("Failed to parse server response", file=sys.stderr)
    print(f"Server response: {curl_process.stdout.decode()}", file=sys.stderr)
    sys.exit(1)

for key, value in json_result.items():
    print("{0:15}{1}".format(key.upper(), value))
EOF
}