nm dispatcher for captive portal (snu_guest, KT_Starbucks, ...)

gistfile1.txt

#!/bin/bash
#
# /etc/NetworkManager/dispatcher.d/99-wifi-hook

INTERFACE="$1"
ACTION="$2"
CONN="$CONNECTION_ID"
LOCKDIR="/tmp/nm-wifi-hook-$CONN.lock"

run_hook() {
    local script="$1"
    
    if ! mkdir "$LOCKDIR" 2>/dev/null; then
        exit 0
    fi
    trap "rmdir '$LOCKDIR'" EXIT
    
    logger "Running $1"

    "$script"
}

if [ "$INTERFACE" != "$IFACE" ]; then
	exit 0; # Not wifi
fi

SSID=$(iw dev $INTERFACE info | grep ssid | awk '{print $2}')

if [ "$ACTION" = "up" ]; then
    case "$SSID" in
        "snu_guest")
            run_hook "/home/$USER/.local/bin/scripts/wifi-hook-snu_guest"
            ;;
    esac
fi

exit 0

wifi-hook-snu_guest

#!/usr/bin/env python3
#
# $HOME/.local/bin/scripts/wifi-hook-snu_guest

import requests
import re
import sys

sess = requests.Session()

init_req = sess.get("http://1.0.0.1")

if "1.1.1.1" in init_req.text:
    print("Already authenticated")
    sys.exit(0)

if (next_case := re.findall("<meta http-equiv='refresh' content='1; url=(.*)'>", init_req.text)):
    next_url = next_case[0]
else:
    next_url = "http://172.19.1.20/view/external/guest"

logn_req = sess.get(next_url)

apc_data = {
    "apc_type": re.findall('var APCType = "(.*)";', logn_req.text)[0],
    "apc_ip":   re.findall('var APCConnectionIp = "(.*)";', logn_req.text)[0],
    "apc_port": re.findall('var APCConnectionPort = "(.*)";', logn_req.text)[0],
    "apc_cb":   re.findall('var redirectURL = "(.*)";', logn_req.text)[0],
    "apc_fwd":  re.findall('var forward = "(.*)";', logn_req.text)[0]
}

auth_req = sess.post("http://172.19.1.20/login/guest", headers={'Content-Type': 'application/json; charset=utf-8','isPad': 'false'}, json = 
    {"userId":"","userType":"","guestCompany":"","guestPhone":"","purpose":"","guestEmail":"","guestName":""}
    )
print(auth_req.text)


if (apc_data["apc_type"] == "SAMSUNG"):
    import dns.resolver
    resolver = dns.resolver.Resolver(configure=False)
    resolver.nameservers = ["1.1.1.1"]
    fwd_host = requests.utils.parse_url(apc_data["apc_fwd"]).host
    fwd_ip = resolver.resolve(fwd_host, 'A')
    url = apc_data["apc_fwd"].replace(fwd_host, fwd_ip[0].to_text()) if apc_data["apc_fwd"] else f"https://{apc_data["apc_ip"]}/client.php"
    data = {"id": "guest", "passwd": "guest", "redirect_url": apc_data["apc_cb"], "agree": "0", "type": "3"}

elif (apc_data["apc_type"] == "ARUBA"):
    url = f"http://{apc_data["apc_ip"]}/auth/index.html/u"
    data = {"user": "guest", "password": "guest"}

else:
    print(logn_req.text)
    print(apc_data)

finl_req = sess.post(url, headers={'Content-Type': 'application/x-www-form-urlencoded'}, data=data)