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#!/bin/sh
# captive portal auto-login script for telekom hotspots (DE)
# Copyright (c) 2021-2026 Dirk Brenken (dev@brenken.org)
# This is free software, licensed under the GNU General Public License v3.
# set (s)hellcheck exceptions
# shellcheck disable=all
# url encoding function
#
urlencode()
{
local chr str="${1}" len="${#1}" pos=0
while [ "${pos}" -lt "${len}" ]; do
chr="${str:pos:1}"
case "${chr}" in
[a-zA-Z0-9.~_-])
printf "%s" "${chr}"
;;
" ")
printf "%%20"
;;
*)
printf "%%%02X" "'${chr}"
;;
esac
pos=$((pos + 1))
done
}
export LC_ALL=C
export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
trm_funlib="/usr/lib/travelmate-functions.sh"
if [ -z "${trm_bver}" ]; then
. "${trm_funlib}"
f_conf
fi
username="$(urlencode "${1}")"
password="$(urlencode "${2}")"
trm_domain="hotspot.t-mobile.net"
if ! "${trm_lookupcmd}" "${trm_domain}" >/dev/null 2>&1; then
exit 1
fi
# get redirect url
#
raw_html="$("${trm_fetch}" ${trm_fetchparm} --user-agent "${trm_useragent}" "${trm_captiveurl}")"
redirect_url="$(printf "%s" "${raw_html}" | "${trm_awkcmd}" 'match(tolower($0),/<loginurl>.*<\/loginurl>/){printf "%s",substr($0,RSTART+10,RLENGTH-21)}' 2>/dev/null | "${trm_awkcmd}" '{gsub("&","\\&");printf "%s",$0}' 2>/dev/null)"
[ -z "${redirect_url}" ] && exit 1
# final login request
#
raw_html="$("${trm_fetch}" ${trm_fetchparm} --user-agent "${trm_useragent}" --referer "https://${trm_domain}/wlan/rest/freeLogin" --header "content-type: application/x-www-form-urlencoded" --data "UserName=${username}&Password=${password}&FNAME=0&button=Login&OriginatingServer=http%3A%2F%2F${trm_captiveurl}" "${redirect_url}")"
login_url="$(printf "%s" "${raw_html}" | "${trm_awkcmd}" 'match(tolower($0),/<logoffurl>.*<\/logoffurl>/){printf "%s",substr($0,RSTART+11,RLENGTH-23)}' 2>/dev/null)"
[ -n "${login_url}" ] && exit 0 || exit 255
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