Přihlašovací skript pro wlan_fi na FI MU. Pro klasický Linux i Android.

fadminrc

http_user=...
http_password=...

fiwifi

#!/bin/bash
#lynx https://fadmin.fi.muni.cz/auth/sit/wireless/login.mpl

#LOGIN_URL=https://fadmin.fi.muni.cz/auth/sit/wireless/login.mpl  # old IPv4 only
LOGIN_URL=https://fadmin.fi.muni.cz/auth/sit/wireless/login2.mpl  # new IPv4+IPv6

#export WGETRC=/home/browser/fadmin-wgetrc
export WGETRC=~/auth/fadminrc
export RUN_DHCLIENT=0 # useful on Android phones with Debian chroot
export FADMIN_INTERFACE="*" # it is useful to force wlan0 on Android devices; it is useful to leave it "*" on notebooks

function dhc {
	if [ "$RUN_DHCLIENT" == 1 ]; then
		sudo /sbin/dhclient
	fi
}

function fdate {
	date +%Y-%m-%d--%H-%M-%S
}

function getMyIp {
	if [ "$FADMIN_INTERFACE" == "*" ]; then
		echo '*'
	else
		/sbin/ifconfig "$FADMIN_INTERFACE" | /bin/grep -oE 'inet addr:([0-9]{1,3}\.){3}[0-9]{1,3}' | /bin/sed 's/^inet addr://'
	fi
}

function getMyIp6 {
	if [ "$FADMIN_INTERFACE" == "*" ]; then
		echo '*'
	else
		/sbin/ifconfig "$FADMIN_INTERFACE" | /bin/grep -oE 'inet6 addr: ([0-9a-f]{0,4}:){,7}([0-9a-f]{0,4})((/[0-9]+)?)' | /bin/sed 's/^inet6 addr: //' | head -n1
	fi
}

function bind {
	if [ "$1" == "*" ]; then
		echo "-c" # useless
	else
		echo "--bind-address=$1"
	fi
}

function loadImage {
	ip="$1"
	url="$2"
	wget -nv "$(bind "$ip")" -O /tmp/login-img.png -- "$url"
}

function login {
	ip="$1"
	date="$2"
	urls=$(wget -nv "$(bind "$ip")" -O - -- "$LOGIN_URL" | filterAuthImages )
	urlsSucc=$?
	if [ "$urlsSucc" != 0 ]; then
		return $urlsSucc;
	fi
	mainUrl="$(printf "%s" "$urls" | head -n1)"
	additionalUrls="$(printf "%s" "$urls" | (read; cat))"
	echo "mainUrl: $mainUrl"
	echo "additionalUrls: $additionalUrls"
	loadImage "$ip" "$mainUrl"
	mainResult=$?
	ip6="$(getMyIp6)"
	for i in $additionalUrls; do
		loadImage "$ip6" "$i" || loadImage "$ip" "$i"
	done
	return $mainResult
}

function filterAuthImages {
	grep IPv | grep -oE '<img src="[^"]+"' | sed 's/"$//' | sed 's/^.*"//'
}

dhc
date="$(fdate)"
ip="$(getMyIp)"
while 
	[ "$ip" != "" ] &&
	echo trying to log in... && ( ! login "$ip" "$date" )
do
	echo failed
	touch ~/"fadmin-$date.ERROR"
	sleep 5
	dhc
	date="$(fdate)"
	ip="$(getMyIp)"
done