GBATemp notifier written in bash

gbanotif.sh

#!/bin/bash
# ===================================
#     GBATemp notifier bash script
#
#         created by MarcusD
#       Copyright $(date +"%Y")
#
#                              :P
# ===================================


function writecfg {
	echo $'MSGTIMEOUT='$MSGTIMEOUT$'\nSESSID='$SESSID$'\nTOKN='$TOKN >~/.gbanotif
}

function readcfg {
	. ~/.gbanotif
}

function defaultcmd {
	echo $'RET=$(notifcount) && [ $RET != "0" ] && notiflist | reformat | limitno $RET | sendnotif\nRET=$(msgcount) && [ $RET != "0" ] && msglist | reformat | reformat_msg | limitno $RET | sendnotif\n\n# DO NOT REMOVE!\n! test' >~/.gbacmd
}

function reformat {
	grep -oP '(?<="templateHtml":").*(?=","css")' | sed 's/\\n/\n/g' | sed 's/\\t/\t/g' | sed 's/<div.*>//g' | sed 's/<ol.*>//g' | sed 's/\\\//\//g' | sed 's/\\"/\"/g' | sed 's/<\/div>//g' | sed 's/<\/ol>//g' | sed 's/<li.*>/<li>/g' | sed 's/<abbr.*>\(.*\)<\/abbr>/<i>\1<\/i>/g' | sed 's/href="/href="https\:\/\/gbatemp\.net\//g' | sed 's/<a.*><img.*\/><\/a>//g' | sed 's/<span[^>]*>//g' | sed 's/<\/span>//g' | sed 's/<h3>//g' | sed 's/<\/h3>//g' | sed 's/\t//g' | sed 's/  //g' | sed 's/<li>//g' | sed 's/<\/li>/|/g' | sed 's/<a[^>]*href="\([^"]*\)"[^>]*>/<a href="\1">/g' | tr '\n' $'\xb4' | sed 's/\xb4\+//g' | sed 's/<i>/\n\n<i>/g' | tr $'\xb4' '|' | sed 's/<\/i>/<\/i>|/g' | sed 's/||/|/g'
}

function reformat_msg {
	sed 's/<h3[^>]*>//g' | sed 's/\(Last.*\),$/\n\1/g' | sed 's/<\/a>With:/<\/a>\n\nWith:/g'
}

function tokenfresh_raw {
	curl -XPOST 'http://gbatemp.net/login/csrf-token-refresh' -H "Cookie: xf_session=$SESSID" --data "&_xfRequestUri=/&_xfNoRedirect=1&_xfToken=$TOKN&_xfResponseType=json"
}

function livecount_raw {
	curl -XPOST -H "Cookie: xf_session=$SESSID" -d "_xfRequestUri=%2F&_xfNoRedirect=1&_xfToken=$TOKN&_xfResponseType=json" "https://gbatemp.net/index.php?liveupdate"
}

function notiflist_raw {
	curl "https://gbatemp.net/account/alerts-popup?_xfRequestUri=%2F&_xfNoRedirect=1&_xfToken=$TOKN&_xfResponseType=json" -H "Cookie: xf_session=$SESSID"
}

function msglist_raw {
	curl "http://gbatemp.net/conversations/popup?_xfRequestUri=%2F&_xfNoRedirect=1&_xfToken=$TOKN&_xfResponseType=json" -H "Cookie: xf_session=$SESSID"
}

function notifcount {
	RET=$(livecount_raw)
	[[ $? -ne 0 ]] && return 1
	RET=$(echo $RET | sed 's/.*_visitor_alertsUnread":"\([0-9]*\).*"/\1/g' | rev | cut -b 2- | rev)
	#[[ $? -ne 0 ]] && return 1
	[[ $RET =~ ^[0-9]+$ ]] || return 1
	echo $RET
	return 0
}

function msgcount {
	RET=$(livecount_raw)
	[[ $? -ne 0 ]] && return 1
	RET=$(echo $RET | sed 's/.*_visitor_conversationsUnread":"\([0-9]*\).*"/\1/g' | rev | cut -b 2- | rev)
	#[[ $? -ne 0 ]] && return 1
	[[ $RET =~ ^[0-9]+$ ]] || return 1
	echo $RET
	return 0
}

function notiflist {
	RET=$(notiflist_raw)
	[[ $? -ne 0 ]] && return 1
	echo $RET | testerr && return 1
	echo $RET
	return 0
}

function msglist {
	RET=$(msglist_raw)
	[[ $? -ne 0 ]] && return 1
	echo $RET | testerr && return 1
	echo $RET
	return 0
}

function limitno {
	tr '\n' $'\x1b' | tr '|' '\n' | head -n $1 | tr '\n' '|' | tr $'\x1b' '\n'
}

function sendnotif {
	tr '|' '\0' | xargs -0 -n1 notify-send -t $MSGTIMEOUT -i firefox "GBATemp";
}

function xfsessgen {
	curl 'http://gbatemp.net/dynamic/' -D - -o /dev/null | grep -oP "xf_session=\K[^;]+"
}

function xftokengen {
	curl 'http://gbatemp.net/dynamic/' -H "Cookie: xf_session=$SESSID" | grep -oP '_csrfToken: "\K[^"]+'
}

function xflogincookie {
	curl -XPOST -D - -o /dev/null 'http://gbatemp.net/login/login' -H "Cookie: xf_session=$SESSID" --data "login=$1&register=0&password=$2&cookie_check=1&_xfToken=&redirect=%2F" | grep -oP "xf_session=\K[^;]+"
}

function xflogoff {
	curl "http://gbatemp.net/logout/?_xfToken=$TOKN" -H "Cookie: xf_session=$SESSID"
}

function testerr {
	grep '"errorOverlayType":' 2>&1 > /dev/null
}


# ========================== #
# ===== [ BEGIN HERE ] ===== #
# ========================== #

COMD=''

if readcfg; then
	case "$1" in
		loop)
			COMD="$2"
			;;
		logoff)
			xflogoff
			rm ~/.gbanotif
			exit 0
			;;
		api)
			return 0
			echo This function is for debugging only! Source it if you want to use this!
			exit 1
			;;
		*)
			echo Ignored invalid parameter $1
			;;
	esac
else
	MSGTIMEOUT=300000
	SESSID=$(xfsessgen) || (
		zenity --error --title='xf_session' --text=$'Can\'t get a new session ID from GBATemp!'
		exit
	)
	zenity --info --text=$'This is the first time you launch this,\nso we\'ll need to login into your GBATemp account.\n\nYou\'ll be presented with an error message \(because I\'m lazy :P\),\njust click on yes if you want to continue :P' --ellipsize --title='GBATemp notifier' || exit

fi

while ! RET=$(notifcount); do
	zenity --question --icon-name=error --text=$'Error occurred while trying to login.\nDo you wan\'t to try to login again?' --title='GBATemp notifier' || exit
	IFS='|' read usr pass < <( zenity --username --password) || continue
	[ -z "${usr// }" -o -z "${pass// }" ] && if zenity --error --text='Invalid login info!'; then continue; else exit; fi
	usr=$(echo -n "$usr" | perl -MURI::Escape -ne 'print uri_escape($_)')
	pass=$(echo -n "$pass" | perl -MURI::Escape -ne 'print uri_escape($_)')
	SESSID=$(xflogincookie $usr $pass) || ( zenity --error --text="$SESSID" --title='SESSID'; continue; )
	TOKN=$(xftokengen) || ( zenity --error --text="$SESSID" --title='xfToken'; continue; )
	usr=''
	pass=''
done

writecfg

. ~/.gbacmd || ( echo $'You can edit the payload at "~/.gbacmd"'; defaultcmd; ) && . ~/.gbacmd

[ "x$COMD" != "x" ] && (
	while sleep $COMD; do
		. ~/.gbacmd || (
			echo Error occurred while trying to run the payload: $?
			break
		)
	done
)