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- #!/bin/sh
- # captive portal auto-login script for telekom hotspots (DE)
- # Copyright (c) 2021 Dirk Brenken (dev@brenken.org)
- # This is free software, licensed under the GNU General Public License v3.
-
- # set (s)hellcheck exceptions
- # shellcheck disable=1091,3040,3043,3057
-
- export LC_ALL=C
- export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
- set -o pipefail
-
- # source function library if necessary
- #
- if [ -z "${_C}" ]; then
- . "/lib/functions.sh"
- fi
-
- # url encoding function
- #
- urlencode()
- {
- local chr str="${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
- }
-
- username="$(urlencode "${1}")"
- password="$(urlencode "${2}")"
- trm_domain="telekom.portal.fon.com"
- trm_useragent="$(uci_get travelmate global trm_useragent "Mozilla/5.0 (Linux x86_64; rv:90.0) Gecko/20100101 Firefox/90.0")"
- trm_captiveurl="$(uci_get travelmate global trm_captiveurl "http://detectportal.firefox.com")"
- trm_maxwait="$(uci_get travelmate global trm_maxwait "30")"
- trm_fetch="$(command -v curl)"
-
- # get redirect url
- #
- raw_html="$(${trm_fetch} --user-agent "${trm_useragent}" --referer "http://www.example.com" --connect-timeout $((trm_maxwait / 6)) --location --silent --show-error "${trm_captiveurl}")"
- redirect_url="$(printf "%s" "${raw_html}" | awk 'match(tolower($0),/<loginurl>.*<\/loginurl>/){printf "%s",substr($0,RSTART+10,RLENGTH-21)}' 2>/dev/null | awk '{gsub("&","\\&");printf "%s",$0}' 2>/dev/null)"
- if [ -z "${redirect_url}" ]; then
- exit 1
- fi
-
- # final login request
- #
- raw_html="$("${trm_fetch}" --user-agent "${trm_useragent}" --referer "https://${trm_domain}" --connect-timeout $((trm_maxwait / 6)) --header "content-type: application/x-www-form-urlencoded" --location --silent --show-error --data "UserName=${username}&Password=${password}&FNAME=0&button=Login&OriginatingServer=http%3A%2F%2F${trm_captiveurl}" "${redirect_url}")"
- login_url="$(printf "%s" "${raw_html}" | awk 'match(tolower($0),/<logoffurl>.*<\/logoffurl>/){printf "%s",substr($0,RSTART+11,RLENGTH-23)}' 2>/dev/null)"
- if [ -z "${login_url}" ]; then
- exit 2
- fi
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