bannerweb_bot.sh

#! /bin/bash

#A script for automatic course registration through bannerweb.
#Last time this script was used was in 2016, so i expect to need some changes before it resurrects again.

base_url="https://bannerweb.server:9091"
user_agent="Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/47.0.2526.106 Safari/537.36"
cookies_file="./.ucycookies"
#cookies_file=`date +%s%N`

rm "$cookies_file" 2>/dev/null
user="username" #username
pwd="password" #password
courses=(13159) #courses
season=`date '+%Y%m'`
#season=201301
rest_time=0
attempt_interval=1 #seconds
attempt_interval_prod=1 #seconds
max_execution=600
debug_file=debug.html

function usage(){
	echo "
	 Options:
		-s seconds to begin
		-m minutes to begin
		-h hours to begin
		-t exact time to begin
		-x max execution time
		-k signup attempt interval
		-z manually set season
		-a minutes to accelerate
		-e acceleration attempt interval
	"
	exit 1
}

function timeToSecconds(){
	local hours=`echo ${1%%:*}|sed 's/^0*//'`
	local secconds=`echo ${1##*:}|sed 's/^0*//'`
	local substract=${1#*:}
	local minutes=`echo ${substract%:*}|sed 's/^0*//'`
	local currentHour=`date '+%H'|sed 's/^0*//'`
	local currentMinute=`date '+%M'|sed 's/^0*//'`
	local currentSeccond=`date '+%S'|sed 's/^0*//'`
	if [ "$currentHour:$currentMinute" == "$hours:$minutes" ]; then
		sleep_time=0
		return 1
	fi
	local destSecs=$((hours*3600+minutes*60+secconds))
	local localSecs=$((currentHour*3600+currentMinute*60+currentSeccond))
	sleep_time=$((destSecs-localSecs))
	if [ $sleep_time -lt 0 ]; then 
		sleep_time=$(((24-currentHour)*3600-currentMinute*60-currentSeccond+destSecs))
	fi
}

function getc(){
	local sim_url="${base_url}/PRODel-CY/twbkwbis.P_GenMenu?name=homepage"
	local sim_referer="${base_url}/PRODel-CY/twbkwbis.P_GenMenu?name=homepage"
	curl -s -o/dev/null --cookie-jar "$cookies_file" -A "$user_agent" --referer "$sim_referer" "$sim_url"
	local sim_url="${base_url}/PRODel-CY/twbkwbis.P_WWWLogin"
	local sim_referer="${base_url}/PRODel-CY/twbkwbis.P_GenMenu?name=homepage"
	curl -s -o/dev/null --cookie-jar "$cookies_file" -A "$user_agent" --referer "$sim_referer" "$sim_url"
}

function login(){
	local signin_url="${base_url}/PRODel-CY/twbkwbis.P_ValLogin"
	local signin_referer="${base_url}/PRODel-CY/twbkwbis.P_WWWLogin"
	local signin_d1="sid=$user"
	local signin_d2="PIN=$pwd"
	local signin_text="WELCOME"
	curl -s -o/dev/null --cookie-jar "$cookies_file" --cookie "$cookies_file" -A "$user_agent" --referer "$signin_referer" --data-urlencode "$signin_d1" --data-urlencode "$signin_d2" "$signin_url"
}

function am_i_in(){
	local check_url="${base_url}/PRODel-CY/twbkwbis.P_GenMenu?name=bmenu.P_StuMainMnu"
	local check_referer="${base_url}/PRODel-CY/twbkwbis.P_GenMenu?name=bmenu.P_GenMnu"
	local check_txt="twbkwbis.P_GenMenu?name=bmenu.P_RegMnu"
	resp=`curl -s --cookie-jar "$cookies_file" --cookie "$cookies_file" -A "$user_agent" --referer "$check_referer" "$check_url"`
	found_txt=`echo "$resp"|grep -i "$check_txt"`
	found_txt=${#found_txt}
}

function getin(){
	am_i_in
	wait
	if [ "$found_txt" -eq 0 ]; then
		echo "Login at: `date '+%H:%M:%S'`"
		getc
		wait
		login
		wait
	fi
}

function signup1(){
	local signup_url="${base_url}/PRODel-CY/bwskfreg.P_AltPin1"
	local signup_referer="${base_url}/PRODel-CY/bwskfcls.P_GetCrse"
	local signup_txt=""
	local signup_d="crn=dummy&rsts=dummy&TERM_IN=$season&sel_crn=dummy&assoc_term_in=dummy&ADD_BTN=dummy"
	local signup_regstr="sel_crn=_math_+$season&assoc_term_in=$season"
	for i in "${courses[@]}"; do signup_d="$signup_d&${signup_regstr/_math_/$i}"; done
	signup_d="$signup_d&ADD_BTN=%CE%95%CE%B3%CE%B3%CF%81%CE%B1%CF%86%CE%AE"
	curl -s --cookie-jar "$cookies_file" -o/dev/null --cookie "$cookies_file" -d "p_calling_proc=P_CrseSearch&p_term=$season" -A "$user_agent" --referer "${base_url}/PRODel-CY/bwskfcls.p_sel_crse_search" "${base_url}/PRODel-CY/bwckgens.p_proc_term_date"
	curl -s --cookie-jar "$cookies_file" -o"$debug_file" --cookie "$cookies_file" -d "$signup_d" -A "$user_agent" --referer "$signup_referer" "$signup_url"
}

function signup2(){
	local signup_url="${base_url}/PRODel-CY/bwckcoms.P_Regs"
	local signup_referer="${base_url}/PRODel-CY/bwckcoms.P_Regs"
	local signup_txt=""
	local signup_d="term_in=$season&RSTS_IN=DUMMY&assoc_term_in=DUMMY&CRN_IN=DUMMY&start_date_in=DUMMY&end_date_in=DUMMY&SUBJ=DUMMY&CRSE=DUMMY&SEC=DUMMY&LEVL=DUMMY&CRED=DUMMY&GMOD=DUMMY&TITLE=DUMMY&MESG=DUMMY&REG_BTN=DUMMY"
	local signup_regstr="RSTS_IN=RW&CRN_IN=_math_&assoc_term_in=&start_date_in=&end_date_in="
	for i in `seq 0 9`; do signup_d="$signup_d&${signup_regstr/_math_/${courses[$i]}}"; done
	signup_d="$signup_d&regs_row=0&wait_row=0&add_row=10&REG_BTN=%CE%9A%CE%B1%CF%84%CE%B1%CF%87%CF%8E%CF%81%CE%B7%CF%83%CE%B7"
	curl -s --cookie-jar "$cookies_file" -o"$debug_file" --cookie "$cookies_file" -d "$signup_d" -A "$user_agent" --referer "$signup_referer" "$signup_url"
}

secconds=0
minutes=0
hours=0
time_to_start=""
while getopts "s:m:h:t:x:k:z:a:e:" OPTION
do
	 case $OPTION in
		s)secconds=$OPTARG;;
		m)minutes=$OPTARG;;
		h)hours=$OPTARG;;
		t)time_to_start=$OPTARG;;
		x)max_execution=$OPTARG;;
		k)attempt_interval=$OPTARG;;
		z)season=$OPTARG;;
		a)rest_time=$OPTARG;;
		e)attempt_interval_prod=$OPTARG;;
		?)usage;;
	 esac
done

if [ -n "$time_to_start" ]; then
	timeToSecconds $time_to_start
else
	sleep_time=$((hours*3600+minutes*60+secconds))
fi

echo -e "Max execution: $max_execution minutes"
echo -e "Try every: $attempt_interval seconds initially"
echo -e "User: $user"
echo -e "Accelerate in: $rest_time minutes, $attempt_interval_prod s/t"
echo -e "season: $season\n\n"

echo "Executed at: `date '+%H:%M:%S'`"
echo "Sleeping $sleep_time seconds"
sleep $sleep_time 2>/dev/null

total_execution_time=0
method=1
while [ $total_execution_time -lt $((max_execution*60)) ]; do
	echo "Start at: `date '+%H:%M:%S'`"
	
	if [ $((rest_time*60)) -le $total_execution_time ]; then
		rest_time=$max_execution
		attempt_interval=$attempt_interval_prod
		echo "Turbo time : Try every $attempt_interval_prod seconds"
	fi
	
	stime=`date +%s`
	getin
	method=$((method%3))
    #every 3 attempts, it's expected that 2 will be performed through signup2, which is faster
	[ $method -eq 1 ] && signup1
	[ $method -ne 1 ] && signup2 
	wait
	method=$((method+1))
	etime=`date +%s`
	sleep_time=$((attempt_interval-etime+stime))
	sleep $sleep_time 2>/dev/null
	total_execution_time=$((total_execution_time+`date +%s`-stime)) #i.e. $SECONDS
done