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#!/bin/sh
# captive portal auto-login script for bahn/ICE hotspots (DE)
# Copyright (c) 2020-2026 Dirk Brenken (dev@brenken.org)
# This is free software, licensed under the GNU General Public License v3.
# set (s)hellcheck exceptions
# shellcheck disable=all
export LC_ALL=C
export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
trm_funlib="/usr/lib/travelmate-functions.sh"
if [ -z "${trm_bver}" ]; then
. "${trm_funlib}"
f_conf
fi
trm_domain="wifi.bahn.de"
if ! "${trm_lookupcmd}" "${trm_domain}" >/dev/null 2>&1; then
trm_domain="login.wifionice.de"
if ! "${trm_lookupcmd}" "${trm_domain}" >/dev/null 2>&1; then
exit 1
fi
fi
# current cna portal api
#
raw_html="$("${trm_fetchcmd}" ${trm_fetchparm} --user-agent "${trm_useragent}" --header "Content-Type: application/json" --header "X-Requested-With: XMLHttpRequest" --header "X-Csrf-Token: csrf" --header "Referer: https://${trm_domain}/cna/" --data "{}" "https://${trm_domain}/cna/logon")"
printf "%s" "${raw_html}" | "${trm_grepcmd}" -qF "success" && exit 0
# legacy portal api, get security token
#
"${trm_fetchcmd}" ${trm_fetchparm} --user-agent "${trm_useragent}" --cookie-jar "/tmp/${trm_domain}.cookie" --output /dev/null "https://${trm_domain}/en/"
[ "${?}" = "0" ] && sec_token="$("${trm_awkcmd}" '/csrf/{print $7}' "/tmp/${trm_domain}.cookie" 2>/dev/null)"
rm -f "/tmp/${trm_domain}.cookie"
[ -z "${sec_token}" ] && exit 2
# legacy portal api, final post request
#
"${trm_fetchcmd}" ${trm_fetchparm} --user-agent "${trm_useragent}" --header "Cookie: csrf=${sec_token}" --data "login=true&CSRFToken=${sec_token}" --output /dev/null "https://${trm_domain}/en/"
[ "${?}" = "0" ] && exit 0 || exit 255
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