#!/bin/bash

source .env
dependency_check(){
	for DEPENDENCY; do
		if ! command -v "$DEPENDENCY" 1>/dev/null; then
			printf "%s not found. Please install it.\n" "$DEPENDENCY" >&2
			exit 2
		fi
		done
	unset DEPENDENCY
}

csrf_token(){
home_html=$(curl -s -c .cookie $ROUTER_ADDRESS/html/home.html)
csrf_token1=$(echo $home_html | htmlq 'meta[name="csrf_token"]' --attribute content | head -n1)
csrf_token2=$(echo $home_html | htmlq 'meta[name="csrf_token"]' --attribute content | tail -n1)
}

gen_first_nonce(){
first_nonce=$(head /dev/urandom | tr -dc A-Za-z0-9  | sha256sum | awk '{print $1}')
}
webserver_token(){
token=$(curl -b .cookie  'http://192.168.1.1/api/webserver/token' \
  -H 'Accept: */*' \
  -H 'Accept-Language: en-US,en' \
  -H 'Connection: keep-alive' \
  -H 'Referer: http://192.168.1.1/html/home.html' \
  -H 'Sec-GPC: 1' \
  -H 'User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36' \
  -H 'X-Requested-With: XMLHttpRequest' \
  -H '_ResponseSource: Broswer' \
  --compressed \
  --insecure | xmlstarlet sel -t -v "/response/token")

#token=$(curl -s -b .cookie $ROUTER_ADDRESS/api/webserver/token | xmlstarlet sel -t -v "/response/token")

token_start=$(echo "${token::${#token}-32}")
token_end=$(echo ${token:32})

}

challenege_login(){
curl -s -b .cookie "$ROUTER_ADDRESS/api/user/challenge_login" \
  -H "Origin: $ROUTER_ADDRESS" \
  -H "Referer: $ROUTER_ADDRESS/html/home.html" \
 -H 'X-Requested-With: XMLHttpRequest' \
  -H "_ResponseSource: Broswer" \
  -H '__RequestVerificationToken: "${token_end}"' \
  --data-raw '<?xml version="1.0" encoding="UTF-8"?><request><username>admin</username><firstnonce>${first_nonce}</firstnonce><mode>1</mode></request>'
}


#exec oder
dependency_check "htmlq" "xmlstarlet" "tail" "head" "curl"
webserver_token
gen_first_nonce
challenege_login

# debug
echo ""
echo ""
echo ""
echo ""
echo ' mmmm   mmmmmm mmmmm  m    m   mmm   '
echo ' #   "m #      #    # #    # m"   "  '
echo ' #    # #mmmmm #mmmm" #    # #   mm  '
echo ' #    # #      #    # #    # #    #  '
echo ' #mmm"  #mmmmm #mmmm" "mmmm"  "mmm"  '
echo ""
echo "full token:	${token}"
echo "token:		${token_start}${token_end}"
echo "token_start:	${token_start}"
echo "token_end:					$token_end"
echo "first_nonce:	$first_nonce"