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64 lines
2.3 KiB
64 lines
2.3 KiB
#!/bin/sh
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# captive portal auto-login script for telekom hotspots (DE)
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# Copyright (c) 2021 Dirk Brenken (dev@brenken.org)
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# This is free software, licensed under the GNU General Public License v3.
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# set (s)hellcheck exceptions
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# shellcheck disable=1091,3040,3043,3057
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export LC_ALL=C
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export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
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set -o pipefail
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# source function library if necessary
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#
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if [ -z "${_C}" ]; then
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. "/lib/functions.sh"
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fi
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# url encoding function
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#
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urlencode()
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{
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local chr str="${1}" len="${#1}" pos=0
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while [ "${pos}" -lt "${len}" ]; do
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chr="${str:pos:1}"
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case "${chr}" in
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[a-zA-Z0-9.~_-])
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printf "%s" "${chr}"
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;;
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" ")
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printf "%%20"
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;;
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*)
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printf "%%%02X" "'${chr}"
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;;
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esac
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pos=$((pos + 1))
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done
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}
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username="$(urlencode "${1}")"
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password="$(urlencode "${2}")"
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trm_domain="telekom.portal.fon.com"
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trm_useragent="$(uci_get travelmate global trm_useragent "Mozilla/5.0 (Linux x86_64; rv:90.0) Gecko/20100101 Firefox/90.0")"
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trm_captiveurl="$(uci_get travelmate global trm_captiveurl "http://detectportal.firefox.com")"
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trm_maxwait="$(uci_get travelmate global trm_maxwait "30")"
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trm_fetch="$(command -v curl)"
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# get redirect url
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#
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raw_html="$(${trm_fetch} --user-agent "${trm_useragent}" --referer "http://www.example.com" --connect-timeout $((trm_maxwait / 6)) --location --silent --show-error "${trm_captiveurl}")"
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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",$0}' 2>/dev/null)"
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if [ -z "${redirect_url}" ]; then
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exit 1
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fi
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# final login request
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#
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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}" "${redirect_url}")"
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login_url="$(printf "%s" "${raw_html}" | awk 'match(tolower($0),/<logoffurl>.*<\/logoffurl>/){printf "%s",substr($0,RSTART+11,RLENGTH-23)}' 2>/dev/null)"
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if [ -z "${login_url}" ]; then
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exit 2
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fi
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