net/travelmate/files/db-bahn.login

   1 #!/bin/sh
   2 # captive portal auto-login script for german DB hotspots via portal login API
   3 # Copyright (c) 2020 Dirk Brenken (dev@brenken.org)
   4 # This is free software, licensed under the GNU General Public License v3.
   5
   6 # set (s)hellcheck exceptions
   7 # shellcheck disable=1091,2016,2039,2059,2086,2143,2181,2188
   8
   9 export LC_ALL=C
  10 export PATH="/usr/sbin:/usr/bin:/sbin:/bin"
  11 set -o pipefail
  12
  13 if [ "$(uci_get 2>/dev/null; printf "%u" "${?}")" = "127" ]
  14 then
  15         . "/lib/functions.sh"
  16 fi
  17
  18 trm_domain="wifi.bahn.de"
  19 trm_useragent="$(uci_get travelmate global trm_useragent "Mozilla/5.0 (Linux x86_64; rv:80.0) Gecko/20100101 Firefox/80.0")"
  20 trm_maxwait="$(uci_get travelmate global trm_maxwait "30")"
  21 trm_fetch="$(command -v curl)"
  22
  23 # initial get request to receive all header information
  24 #
  25 "${trm_fetch}" --user-agent "${trm_useragent}" --referer "http://www.example.com" --silent --connect-timeout $((trm_maxwait/6)) --include --cookie-jar "/tmp/${trm_domain}.cookie" --output /dev/null "http://${trm_domain}"
  26
  27 # extract the session cookie and the hotspot location
  28 #
  29 if [ -s "/tmp/${trm_domain}.cookie" ]
  30 then
  31         sec_token="$(awk 'BEGIN{FS="[ ;]"}/^Set-Cookie:/{print $2}' "/tmp/${trm_domain}.cookie")"
  32         location="$(awk '/^Location:/{print $2}' "/tmp/${trm_domain}.cookie")"
  33         rm -f "/tmp/${trm_domain}.cookie"
  34 else
  35         exit 2
  36 fi
  37
  38 # post request to subscribe to the portal API
  39 #
  40 if [ -n "${sec_token}" ] && [ -n "${location}" ]
  41 then
  42         "${trm_fetch}" --user-agent "${trm_useragent}" --referer "${location}" --silent  --connect-timeout $((trm_maxwait/6)) --include --cookie-jar "/tmp/${trm_domain}.cookie" --header "Cookie: ${sec_token}" --data "action=subscribe&type=one&connect_policy_accept=false&user_login=&user_password=&user_password_confirm=&email_address=&prefix=&phone=&policy_accept=false&gender=&interests=" --output /dev/null "https://${trm_domain}/portal_api.php"
  43 else
  44         exit 3
  45 fi
  46
  47 # extract additional login and password information from the portal API
  48 #
  49 if [ -s "/tmp/${trm_domain}.cookie" ]
  50 then
  51         login="$(awk 'BEGIN{FS="[\"]"}/^\{\"info/{print $12}' "/tmp/${trm_domain}.cookie")"
  52         password="$(awk 'BEGIN{FS="[\"]"}/^\{\"info/{print $16}' "/tmp/${trm_domain}.cookie")"
  53         rm -f "/tmp/${trm_domain}.cookie"
  54 else
  55         exit 4
  56 fi
  57
  58 # final post request to authenticate to the portal API
  59 #
  60 if [ -n "${login}" ] && [ -n "${password}" ]
  61 then
  62         "${trm_fetch}" --user-agent "${trm_useragent}" --referer "${location}" --silent --connect-timeout $((trm_maxwait/6)) --header "Cookie: ${sec_token}" --data "action=authenticate&login=${login}&password=${password}&policy_accept=false&from_ajax=true&wispr_mode=false" "https://${trm_domain}/portal_api.php"
  63 else
  64         exit 5
  65 fi