#!/bin/bash
# requires: wget, ca-certificates, grep, jq
#rm -f /tmp/cookies.txt

cookiefile="/tmp/cookies.txt"

#username=""
#password=""
#domain=""

#domain should contain "domain_id:record_id"
domain_id=$(echo $domain | tr ":" "\n" | sed -n "1p")
record_id=$(echo $domain | tr ":" "\n" | sed -n "2p")
ipv4=$1

# fake user agent
ua="Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:75.0) Gecko/20100101 Firefox/75.0"



# GET LOGIN PAGE
#csrf tokens for login + language xmlhttprequest required to login (nice try blocking my API access, UD)
loginpage=$(/usr/bin/wget -U "$ua" \
	--save-cookies $cookiefile \
	--keep-session-cookies \
	-qO- "https://www.united-domains.de/login/")

csrf=$(echo "$loginpage" | /bin/grep -oP -m 2 "(?<=<input type=\"hidden\" name=\"csrf\" value=\")[^\"]*(?=\"( /)?>)" | tail -1)
echo "csrfr=${csrf}"
csrfmeta=$(echo "$loginpage" | /bin/grep -oP -m 1 "(?<=<meta name=\"csrf\" content=\")[^\"]*(?=\"( /)?>)")
echo "csrfmeta=${csrfmeta}"
csrfscript=$(echo "$loginpage" | /bin/grep -oP -m 1 "(?<=\"CSRF_TOKEN\":\")[^\"]*(?=\")")
echo "csrfscript=${csrfscript}"

/usr/bin/wget -U "$ua" \
	--load-cookies $cookiefile \
	--save-cookies $cookiefile \
	--keep-session-cookies \
	--delete-after \
	--post-data "language=en-US" \
	--header="HTTP-X-CSRF-TOKEN: $csrfmeta" \
	--header="X-Csrf-Token: $csrfscript" \
	--header="X-Requested-With: XMLHttpRequest" \
	-qO- "https://www.united-domains.de/set-user-language"


# DO THE LOGIN
#login
echo 'login'
loginresp=$(/usr/bin/wget -U "$ua" \
	--load-cookies $cookiefile \
	--save-cookies $cookiefile \
	--keep-session-cookies \
	--post-data "csrf=$csrf&email=$username&pwd=$password&selector=login&loginBtn=Login" \
	-qO- "https://www.united-domains.de/login/")



#check if successful by requesting domain list
#echo 'domain list'
#DOMAIN_LIST=$(/usr/bin/wget -U "$ua" \
#        --load-cookies $cookiefile \
#        --save-cookies $cookiefile \
#        --keep-session-cookies \
#	-qO- 'https://www.united-domains.de/pfapi/dns/domain-list')
#if [ "$DOMAIN_LIST" = "" ] ; then
#  echo "Login not successful"
#  exit 1
#else
#  echo $DOMAIN_LIST
#fi


####################################################################################################
# WE'RE IN



#get current dns record json object & modify ip
echo "get current dns record json object"
current=$(/usr/bin/wget -U "$ua" \
	--load-cookies $cookiefile \
	--save-cookies $cookiefile \
	--keep-session-cookies \
	-qO- "https://www.united-domains.de/pfapi/dns/domain/$domain_id/records")
#echo "CURRENT: $current"

record=$(echo $current |
	jq -cM ".data.A | map(select(.id == $record_id)) | .[0]" | \
	sed "s/ //g" | \
	sed "s/\"address\":\"[0-9.]\+\"/\"address\":\"$ipv4\",\"formId\":${record_id}/g")
#echo "NEW: $record"

payload="{\"record\":$record,\"domain_lock_state\":{\"domain_locked\":false,\"email_locked\":false}}"
url="https://www.united-domains.de/pfapi/dns/domain/$domain_id/records"


# load the DNS page for the given domain_id to get the latest csrf code
dnspage=$(/usr/bin/wget -U "$ua" \
	--load-cookies $cookiefile \
        --save-cookies $cookiefile \
        --keep-session-cookies \
        -qO- "https://www.united-domains.de/portfolio/a/domain-admin/dns/$domain_id")

csrfscript=$(echo "$loginpage" | /bin/grep -oP -m 1 "(?<=\"CSRF_TOKEN\":\")[^\"]*(?=\")")
echo "csrfscript=${csrfscript}"


#send changes
echo "send changes"
#echo -ne "PUT ${url}\n${payload}\n"

output=$(/usr/bin/wget -U "$ua" \
	--load-cookies $cookiefile \
	--save-cookies $cookiefile \
	--keep-session-cookies \
	--method=PUT \
	--header="Accept: application/json" \
	--header="Accept-Encoding: gzip, deflate, br" \
	--header="Accept-Language: de-DE,de;q=0.8,en-US;q=0.5,en;q=0.3" \
	--header="Content-Type: application/json;charset=utf-8" \
	--header="Referer: https://www.united-domains.de/portfolio/a/domain-admin/dns/$domain_id" \
	--header="Origin: https://www.united-domains.de" \
	--header="Http-X-Csrf-Token: $csrfscript" \
	--body-data=$payload -O- $url 2>&1)
echo "UD answered: $output"
#write_log 7 "UD answered:\n$output"

echo $output | /bin/grep "$ipv4" >/dev/null 2>&1
success=$?
#write_log 7 "Retval: $success"
echo "Retval: $success"
#return $success