bootstrap

#!/bin/bash -x
##
## © verus.io 2018-2023, released under MIT license
## Script written in 2021 by Oink.vrsc@
## Script maintained by Oink.vrsc@
##
## This script creates bootstrap archives from the locally running chain in
## tar.gz and zip format.
## After the acrves are made, the MD5, SHA256 and SHA512 checksums are
## calculated.
## Of the archives a Verus Signature will be created if that option is enabled
## in the <COINTICKER>.json
## It creates a basic page, based on the customizable
## `bootstrap.html.template` with this data:
##  - Cointicker and coin name
##  - Basic links to the project
##  - Bootstrap data like creation timestamp, blockheight and best hash
##  - The bootstrap archives, their checksums and signature
## After staging the page, it will move the current bootstrap webfolder to
## `last.<cointicker>-bootstrap` and the staging folder will be renamed
## to `<cointicker>-bootstrap` in the web root location supplied in the
## json for the coin.
##
## Basic options in the json:
## - "sign": true|false (sign with VerusID)
## - "archive": true|false (tar the webfolder for external deployment)
## - "reindex": true|false (reindex the chain after creating bootstrap)
## - "links": list of tags and links to display on the webpage
##Check for a complete description of all options.
##
## Usage: `./bootstrap <Cointicker>`
## the `<CoinTicker>.json` must be present in the same folder as the
## `bootstrap` script. Configure your own `<CoinTicker>.json` and fill with
## the required information. The entered values are case sensitive and paths
## are absolute paths.
## Supply a `<CoinTicker>.png` in the `img` folder for a logo on the page.
## if no command line argument is entered, the script will exit.

## check for command line input
FILE=$1
if [ -z "$FILE" ]; then
    echo "No coin supplied to create Bootstrap for."
    exit 1
fi

## needed binaries
# Dependencies: jq, zip, curl, bc and tr.
if ! command -v jq &>/dev/null ; then
    echo "jq not found. please install using your package manager."
    exit 1
fi
if ! command -v zip &>/dev/null ; then
    echo "zip not found. please install using your package manager."
    exit 1
fi
if ! command -v curl &>/dev/null ; then
    echo "curl not found. please install using your package manager."
    exit 1
fi
if ! command -v bc &>/dev/null ; then
    echo "bc not found. please install using your package manager."
    exit 1
fi
if ! command -v tr &>/dev/null ; then
    echo "tr not found. please install using your package manager."
    exit 1
fi
ZIP=$(which zip)
JQ=$(which jq)
CURL=$(which curl)
BC=$(which bc)
TR=$(which tr)

## Set script folder
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
## Variables declaration
COIN=$(${JQ} -r .coin "${SCRIPT_DIR}/${FILE}.json")
COIN_NAME=$(${JQ} -r .coin_name "${SCRIPT_DIR}/${FILE}.json")
DAEMON_USER=$(${JQ} -r .daemon_user "${SCRIPT_DIR}/${FILE}.json")
DAEMON=$(${JQ} -r .daemon "${SCRIPT_DIR}/${FILE}.json")
RPC_CLIENT=$(${JQ} -r .rpc_client "${SCRIPT_DIR}/${FILE}.json")
CUSTOM_CHAIN_FOLDER=$(${JQ} -r .custom_chain_folder "${SCRIPT_DIR}/${FILE}.json")
TEMPLATE_FOLDER=$(${JQ} -r .template_folder "${SCRIPT_DIR}/${FILE}.json")
STAGING_FOLDER=$(${JQ} -r .staging_folder "${SCRIPT_DIR}/${FILE}.json")
WEB_ROOT=$(${JQ} -r .web_root "${SCRIPT_DIR}/${FILE}.json")
SIGNEE=$(${JQ} .signee "${SCRIPT_DIR}/${FILE}.json")
REINDEX=$(${JQ} .reindex "${SCRIPT_DIR}/${FILE}.json")
SIGN=$(${JQ} .sign "${SCRIPT_DIR}/${FILE}.json")
DISTRIBUTION_TYPE=$(${JQ} -r .distribution_type "${SCRIPT_DIR}/${FILE}.json")
ARCHIVE=$(${JQ} .archive "${SCRIPT_DIR}/${FILE}.json")
FORK_CHECK=$(${JQ} .fork_check "${SCRIPT_DIR}/${FILE}.json")
DEPLOY_EXTERNALLY=$(${JQ} .deploy_externally "${SCRIPT_DIR}/${FILE}.json")
if [ "$FORK_CHECK" == "true" ]; then
  EXPLORER=$(${JQ} -r .explorer_url "${SCRIPT_DIR}/${FILE}.json")
fi
RESYNC=$(${JQ} .resync "${SCRIPT_DIR}/${FILE}.json")
if [ "$RESYNC"  == "true" ]; then
  DOW=$(${JQ} -r .resync_day "${SCRIPT_DIR}/${FILE}.json")
  if [ "$DOW" == "$(date +%u)" ] || [ "$DOW" == "daily" ] ; then
    REINDEX="false"
  else
    RESYNC="false"
  fi
fi
if [[ "$DISTRIBUTION_TYPE" == "tar" || "$DISTRIBUTION_TYPE" == "zip" || "$DISTRIBUTION_TYPE" == "both" ]]
then
  echo "Distribution type $DISTRIBUTION_TYPE accepted."
else
  DISTRIBUTION_TYPE="tar"
fi

## Sanity checks
# Does the user in the json exist?
if id -u "${DAEMON_USER}" >/dev/null 2>&1; then
  echo "\"daemon_user\": \"${DAEMON_USER}\" specified in ${SCRIPT_DIR}/${FILE}.json exists."
else
  echo "\"daemon_user\": \"${DAEMON_USER}\" specified in ${SCRIPT_DIR}/${FILE}.json DOES NOT EXIST."
  exit 1
fi
# Does the daemon in the json exist?
if [[ -f "${DAEMON}" ]]; then
  echo "\"daemon\": \"${DAEMON}\" specified in ${SCRIPT_DIR}/${FILE}.json exists."
else
  echo "\"daemon\": \"${DAEMON}\" specified in ${SCRIPT_DIR}/${FILE}.json DOES NOT EXIST."
  exit 1
fi
# Does the RPC-client in the json exist?
if [[ -f "${RPC_CLIENT}" ]]; then
  echo "\"rpc_client\": \"${RPC_CLIENT}\" specified in ${SCRIPT_DIR}/${FILE}.json exists."
else
  echo "\"rpc_client\": \"${RPC_CLIENT}\" specified in ${SCRIPT_DIR}/${FILE}.json DOES NOT EXIST."
  exit 1
fi
# Does the template folder in the json exist?
if [[ -d "${TEMPLATE_FOLDER}" ]]; then
  echo "\"template_folder\": \"${TEMPLATE_FOLDER}\" specified in ${SCRIPT_DIR}/${FILE}.json exists."
else
  echo "\"template_folder\": \"${TEMPLATE_FOLDER}\" specified in ${SCRIPT_DIR}/${FILE}.json DOES NOT EXIST."
  exit 1
fi
# Does the staging folder in the json already exit? (delete if it exists)
if [[ -d "${STAGING_FOLDER}" ]]
then
    rm -rf "${STAGING_FOLDER}"
fi
# Does the webroot folder in the json exist?
if [[ -d "${WEB_ROOT}" ]]; then
  echo "\"web_root\": \"${WEB_ROOT}\" specified in ${SCRIPT_DIR}/${FILE}.json exists."
else
  echo "\"web_root\": \"${WEB_ROOT}\" specified in ${SCRIPT_DIR}/${FILE}.json DOES NOT EXIST."
  exit 1
fi
## end of sanity checks

## Check if the daemon is running. If not exit, otherwise continue
## This is the only place where no chain location is specified, since no location is set yet.
## Chicken and egg problem. Needs more thought.
dstat=0
count=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} getconnectioncount")
case $count in
    ''|*[!0-9]*) dstat=0 ;;
    *) dstat=1 ;;
esac
if [[ "$dstat" == "0" ]]; then
        exit 1
fi

## Determine standard blockchain locations
# First: set standard locations and web names
if [ "$COIN" == "VRSC" ] || [ "$COIN" == "vrsctest" ]; then
  CHAIN_FOLDER=/home/${DAEMON_USER}/.komodo/${COIN}
  WEB_NAME=${COIN}
else
  SYSTEMTYPE='{\"systemtype\":\"pbaas\"}'
  COIN_HEX=$(su ${DAEMON_USER} -c "${RPC_CLIENT} -chain=${COIN} listcurrencies ${SYSTEMTYPE} | #{JQ} -r --arg COIN "${COIN}" '.[] | select (.currencydefinition.name == \"$COIN\") | 
  .currencydefinition.currencyidhex'")
  CHAIN_FOLDER=/home/${DAEMON_USER}/.verustest/pbaas/${COIN_HEX}
  WEB_NAME=${COIN_HEX}
fi
# second: change to custom location if required
if [ "$CUSTOM_CHAIN_FOLDER" == "true" ]; then
  CHAIN_FOLDER=$(${JQ} -r .chain_folder "${SCRIPT_DIR}/${FILE}.json")
fi

## Read the last resync/reindex settings from web folder json
if [[ -f "${WEB_ROOT}/${WEB_NAME}-bootstrap/${WEB_NAME}.json" ]]; then
  CURRENT_RESYNC=$(${JQ} -r .bootstrap_next.resync ${WEB_ROOT}/${WEB_NAME}-bootstrap/${WEB_NAME}.json)
  CURRENT_REINDEX=$(${JQ} -r .bootstrap_next.reindex ${WEB_ROOT}/${WEB_NAME}-bootstrap/${WEB_NAME}.json)
else
  CURRENT_RESYNC="null"
  CURRENT_REINDEX="null"
fi

## Check if the chain is completely synchronized and wait for full synchronization if needed.
## Currently only supported for the main VRSC chain, if any other chain is specified
## These tests will be bypassed. Checking requires public block explorers available.

if [ "$FORK_CHECK" == "true" ]; then
  CHECK_STATUS="UNKNOWN"
  while [[ ! "$CHECK_STATUS" == "OK" ]]; do
    # collect data
    HEIGHT_LOCAL=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} getinfo | ${JQ} .blocks")
    HEIGHT_REMOTE=$(${CURL} --silent ${EXPLORER}/api/getblockcount)
    HEIGHT_DISTANCE=$(echo "${HEIGHT_LOCAL}-${HEIGHT_REMOTE}" | ${BC} | ${TR} -d -)
    # determine status
    # either output empty = unknown
    if [ -z "${HEIGHT_LOCAL}" ] || [ -z "${HEIGHT_REMOTE}" ]; then
      CHECK_STATUS="UNKNOWN"
    # equal output = OK
    elif [ "${HEIGHT_LOCAL}" -eq "${HEIGHT_REMOTE}" ]; then
      CHECK_STATUS="OK"
    else
    # distance < 3 = warning
      if [ "${HEIGHT_DISTANCE}" -lt "3" ]; then
        CHECK_STATUS="WARN"
        # distance > 3 = critical
      else
        CHECK_STATUS="CRIT"
      fi
    fi
    sleep 15s
  done

  ## Check if the node is forked, exit if forking is detected
  ## Currently only supported for the main VRSC chain.

  CHECK_STATUS="UNKNOWN"
  while [[ ! "$CHECK_STATUS" == "OK" ]]; do
    # collect data
    HASH_LOCAL=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} getbestblockhash")
	HEIGHT_LOCAL=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} getblock ${HASH_LOCAL} 1 | ${JQ} -r .height")
	HASH_REMOTE=$(${CURL} --silent "${EXPLORER}/api/getblockhash?index=${HEIGHT_LOCAL}" | ${JQ} -r .)

    # determine status
    # either output empty = unknown
    if [ -z "${HASH_LOCAL}" ] || [ -z "${HASH_REMOTE}" ]; then
      CHECK_STATUS="UNKNOWN"
    # equal output = OK
    elif [ "${HASH_LOCAL}" == "${HASH_REMOTE}" ]; then
      CHECK_STATUS="OK"
    # nonequal output = critical
    else
      CHECK_STATUS="CRIT"
      exit 1
    fi
    sleep 5s
  done
fi

## Check if the wallet can sign the bootstrap if signing is enabled.
if [[ ( "${SIGN}" == "true" )]]
then
  CAN_SIGN=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} getidentity ${SIGNEE} | ${JQ} .cansignfor")
  if [[ ! "$CAN_SIGN" == "true" ]]
  then
    echo "The specified ID cannot sign from this wallet"
    exit 1
  fi
fi

## Record Bootstrap snapshot data

cp -r "${TEMPLATE_FOLDER}" "${STAGING_FOLDER}"
echo "{" | tee $STAGING_FOLDER/$WEB_NAME.json
echo "  \"coin\": \"${COIN}\"," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
BOOTSTRAP_BLOCKCOUNT=$(su ${DAEMON_USER} -c "${RPC_CLIENT} -chain=${COIN} getblockcount")
BOOTSTRAP_TIME=$(su ${DAEMON_USER} -c "${RPC_CLIENT} -chain=${COIN} getblock ${BOOTSTRAP_BLOCKCOUNT} 1 | ${JQ} -r .time")
BOOTSTRAP_BLOCKHASH=$(su ${DAEMON_USER} -c "${RPC_CLIENT}  -chain=${COIN} -datadir=${CHAIN_FOLDER} getblockhash ${BOOTSTRAP_BLOCKCOUNT}")
echo "  \"bootstrap_timestamp\": \"$BOOTSTRAP_TIME\"," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "  \"bootstrap_height\": \"${BOOTSTRAP_BLOCKCOUNT}\"," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "  \"bootstrap_bestblockhash\": \"${BOOTSTRAP_BLOCKHASH}\"," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
if [[ "${DISTRIBUTION_TYPE}" == "tar" ]]
then 
  echo "  \"bootstrap_types\": [\"tar.gz\"]," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
elif [[ "${DISTRIBUTION_TYPE}" == "zip" ]]
then
  echo "  \"bootstrap_types\": [\"zip\"]," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
elif [[ "${DISTRIBUTION_TYPE}" == "both" ]]
then
  echo "  \"bootstrap_types\": [\"tar.gz\",\"zip\"]," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
fi
echo "  \"bootstrap_current\": {" | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "    \"resync\": \"${CURRENT_RESYNC}\"," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "    \"reindex\": \"${CURRENT_REINDEX}\"" | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "  }," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "  \"bootstrap_next\": {" | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "    \"resync\": \"${RESYNC}\"," | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "    \"reindex\": \"${REINDEX}\"" | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo "  }" | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"
echo '}' | tee -a "${STAGING_FOLDER}/${WEB_NAME}.json"


## Recording PBaaS chain definitions for determining notarization heights.
CHAIN_DEFINITIONS=$(su ${DAEMON_USER} -c "${RPC_CLIENT} -chain=${COIN} listcurrencies '{\"systemtype\":\"pbaas\"}'")

## Determining notarization heights
PARENT_ID=$(echo $CHAIN_DEFINITIONS | ${JQ} -r --arg COIN "${COIN}" '.[] | select (.currencydefinition.name == $COIN) | .currencydefinition.parent')

if [[ "$PARENT_ID" == "null" || "$PARENT_ID" == "" ]]
then
  sleep 0.1s
else
  PARENT_NAME=$(echo $CHAIN_DEFINITIONS | ${JQ} -r --arg PARENT_ID "${PARENT_ID}" '.[] | select (.currencydefinition.currencyid == $PARENT_ID) | .currencydefinition.name')
  CHAIN_NOTARIZATION_HEIGHT=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${PARENT_NAME} getnotarizationdata \"${COIN}\" | ${JQ} '.notarizations | .[0].notarization.notarizationheight'")
  PARENT_NOTARIZATION_HEIGHT=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} getnotarizationdata \"${PARENT_NAME}\" | ${JQ} '.notarizations | .[0].notarization.notarizationheight'")
fi

## Stopping daemon
su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} stop"

## Monitoring if the daemon is still running, before continuing
while ps -u "${DAEMON_USER}" x | grep "${DAEMON}" | grep "${CHAIN_FOLDER}"; do
    sleep 2s
done

## Creating bootstrap tar.gz archive, check integrity, move to staging folder and determine the size
cd "${CHAIN_FOLDER}"
if [[ "${DISTRIBUTION_TYPE}" == "tar" || "${DISTRIBUTION_TYPE}" == "both" ]]
then
  tar -czvf "${WEB_NAME}-bootstrap.tar.gz" blocks chainstate
  ## checking integrity of the created archive. Delete and exit if integrity is compromised (leave daemon switched off)
  if ! tar tf "${WEB_NAME}-bootstrap.tar.gz" &> /dev/null; then
    rm "${WEB_NAME}-bootstrap.tar.gz"
    exit 1
  fi
  mv "${CHAIN_FOLDER}/${WEB_NAME}-bootstrap.tar.gz" "${STAGING_FOLDER}"
  TGZ_SIZE=$(ls -lah "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz" | awk '{ print $5}')
fi

## Creating bootstrap zip archive, check integrity, move to staging folder and determine the size
if [[ "${DISTRIBUTION_TYPE}" == "zip" || "${DISTRIBUTION_TYPE}" == "both" ]]
then
  ${ZIP} -r "${WEB_NAME}-bootstrap.zip"  blocks chainstate
  ## checking integrity of the created archive. Delete and exit if integrity is compromised (leave daemon switched off)
  if ! unzip -t "${WEB_NAME}-bootstrap.zip" &> /dev/null; then
    rm "${WEB_NAME}-bootstrap.zip"
    exit 1
  fi
  mv "${CHAIN_FOLDER}/${WEB_NAME}-bootstrap.zip" "${STAGING_FOLDER}"
  ZIP_SIZE=$(ls -lah "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip" | awk '{ print $5}')
fi

## initial archives have been validated. Remove oldest bootstrap (backup) archive folder to make room for the new one.
rm -rf "${WEB_ROOT}/last.${WEB_NAME}-bootstrap"

## Starting daemon back up if signing is required or reindex or rescan is false
if [[ ( "${SIGN}" == "true" ) || (( "${REINDEX}" == "false" ) && ( "${RESYNC}" == "false" )) ]]
then
  su "${DAEMON_USER}" -c "cd ${CHAIN_FOLDER} && ${DAEMON} -chain=${COIN} -datadir=${CHAIN_FOLDER} -daemon 1>/dev/null 2>&1"
fi


## Creating checksum files
cd "${STAGING_FOLDER}"
if [[ "${DISTRIBUTION_TYPE}" == "tar" || "${DISTRIBUTION_TYPE}" == "both" ]]
then
  md5sum -b "${WEB_NAME}-bootstrap.tar.gz" >"${WEB_NAME}-bootstrap.tar.gz.md5sum"
  sha256sum -b "${WEB_NAME}-bootstrap.tar.gz" >"${WEB_NAME}-bootstrap.tar.gz.sha256sum"
  sha512sum -b "${WEB_NAME}-bootstrap.tar.gz" >"${WEB_NAME}-bootstrap.tar.gz.sha512sum"
fi

if [[ "${DISTRIBUTION_TYPE}" == "zip" || "${DISTRIBUTION_TYPE}" == "both" ]]
then
  md5sum -b "${WEB_NAME}-bootstrap.zip" >"${WEB_NAME}-bootstrap.zip.md5sum"
  sha256sum -b "${WEB_NAME}-bootstrap.zip" >"${WEB_NAME}-bootstrap.zip.sha256sum"
  sha512sum -b "${WEB_NAME}-bootstrap.zip" >"${WEB_NAME}-bootstrap.zip.sha512sum"
fi

## check if signature creating is enabled and create VerusID signatures
if "${SIGN}"
then
  ## Check if the daemon is started in a loop
  ## If false wait 15 seconds and repeat loop
  ## If true proceed to signing the archives
  dstat=0
  until [ $dstat == 1 ]; do
    count=$(su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} getconnectioncount")
    case $count in
      ''|*[!0-9]*) dstat=0
         sleep 15s ;;
      *) dstat=1 ;;
    esac
  done

  ## sign the tar.gz release
  if [[ "${DISTRIBUTION_TYPE}" == "tar" || "${DISTRIBUTION_TYPE}" == "both" ]]
  then
    su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} signfile ${SIGNEE} ${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz" > "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz.tmp"
    if [[ -f "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz.tmp" ]]
    then
      { head -n 1 "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz.tmp"; echo "  \"signee\": ${SIGNEE},"; tail -n +2 "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz.verusid"
    fi
  rm "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.tar.gz.tmp"
  fi
  ## sig the zip release
  if [[ "${DISTRIBUTION_TYPE}" == "zip" || "${DISTRIBUTION_TYPE}" == "both" ]]
  then
    su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} signfile ${SIGNEE} ${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip"> "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip.tmp"
    if [[ -f "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip.tmp" ]]
    then
      { head -n 1 "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip.tmp"; echo "  \"signee\": ${SIGNEE},"; tail -n +2 "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip.verusid"
    fi
  rm "${STAGING_FOLDER}/${WEB_NAME}-bootstrap.zip.tmp"
  fi
fi

## depending on the value of $REINDEX, stop the chain and start it with the `-reindex` parameters
if [[ "${REINDEX}" == "false" ]]
then
  ## Reindex is disabled
  sleep 0.1s
else
  ## Stopping daemon
  su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} stop"
  ## Monitoring if the daemon is still running, before continuing
  while ps -u "${DAEMON_USER}" x | grep "${DAEMON}" | grep "${CHAIN_FOLDER}\ "; do
    sleep 2s
  done
  ## Starting daemon back up with -reindex
  su "${DAEMON_USER}" -c "cd ${CHAIN_FOLDER} && ${DAEMON} -chain=${COIN} -datadir=${CHAIN_FOLDER} -reindex -daemon 1>/dev/null 2>&1"
fi

## depending on the value of $RESYNC, stop the chain, clear current chain folder and start it.
if [[ "${RESYNC}" == "false" ]]; then
  ## Resync is not active
  sleep 01.s
else
  ## Stopping daemon
  su "${DAEMON_USER}" -c "${RPC_CLIENT} -chain=${COIN} -datadir=${CHAIN_FOLDER} stop"
  ## Monitoring if the daemon is still running, before continuing
  while ps -u "${DAEMON_USER}" x | grep "${DAEMON}" | grep "${CHAIN_FOLDER}\ "; do
    sleep 2s
  done
  ## Clear files out of chain folder
  if [[ -d "${CHAIN_FOLDER}/blocks" ]]; then rm -rf "${CHAIN_FOLDER}/blocks"; fi
  if [[ -d "${CHAIN_FOLDER}/chainstate" ]]; then rm -rf "${CHAIN_FOLDER}/chainstate"; fi
  if [[ -d "${CHAIN_FOLDER}/database" ]]; then rm -rf "${CHAIN_FOLDER}/database"; fi
  if [[ -d "${CHAIN_FOLDER}/notarisations" ]]; then rm -rf "${CHAIN_FOLDER}/notarisations"; fi
  if [[ -f "${CHAIN_FOLDER}/db.log" ]]; then rm -f "${CHAIN_FOLDER}/db.log"; fi
  if [[ -f "${CHAIN_FOLDER}/fee_estimates.dat" ]]; then rm -f "${CHAIN_FOLDER}/fee_estimates.dat"; fi
  if [[ -f "${CHAIN_FOLDER}/komodostate" ]]; then rm -f "${CHAIN_FOLDER}/komodostate"; fi
  if [[ -f "${CHAIN_FOLDER}/komodostate.ind" ]]; then rm -f "${CHAIN_FOLDER}/komodostate.ind"; fi
  if [[ -f "${CHAIN_FOLDER}/.lock" ]]; then rm -f "${CHAIN_FOLDER}/.lock"; fi
  if [[ -f "${CHAIN_FOLDER}/peers.dat" ]]; then rm -f "${CHAIN_FOLDER}/peers.dat"; fi
  if [[ -f "${CHAIN_FOLDER}/signedmasks" ]]; then rm -f "${CHAIN_FOLDER}/signedmasks"; fi
  if [[ -f "${CHAIN_FOLDER}/verus.pid" ]]; then rm -f "${CHAIN_FOLDER}/verus.pid"; fi
  ## Starting daemon back up
  su "${DAEMON_USER}" -c "cd ${CHAIN_FOLDER} && ${DAEMON} -chain=${COIN} -datadir=${CHAIN_FOLDER} -daemon 1>/dev/null 2>&1"
fi

## Collect data about the bootstrap (recorded at daemon shutdown, filesizes read directly from files)
COIN=$(${JQ} -r .coin "${STAGING_FOLDER}/${WEB_NAME}.json")
BOOTSTRAP_TIMESTAMP=$(date -d @$(${JQ} -r .bootstrap_timestamp "${STAGING_FOLDER}/${WEB_NAME}.json"))
BOOTSTRAP_HEIGHT=$(${JQ} -r .bootstrap_height "${STAGING_FOLDER}/${WEB_NAME}.json")
BOOTSTRAP_BESTBLOCKHASH=$(${JQ} -r .bootstrap_bestblockhash "${STAGING_FOLDER}/${WEB_NAME}.json")

## Create populated $WEB_NAME.html from local template file
mv "${STAGING_FOLDER}/bootstrap.html.template" "${STAGING_FOLDER}/${WEB_NAME}.html"
## Remove unused distribution options
if [[ "${DISTRIBUTION_TYPE}" == "tar" ]]
then
  mv "${STAGING_FOLDER}/${WEB_NAME}.html" "${STAGING_FOLDER}/${WEB_NAME}.tmp"
  { head -n 54 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; tail -n +65 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}.html"
  rm -f "${STAGING_FOLDER}/${WEB_NAME}.tmp"
fi
if [[ "${DISTRIBUTION_TYPE}" == "zip" ]]
then
  mv "${STAGING_FOLDER}/${WEB_NAME}.html" "${STAGING_FOLDER}/${WEB_NAME}.tmp"
  { head -n 46 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; tail -n +54 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}.html"
  rm -f "${STAGING_FOLDER}/${WEB_NAME}.tmp"
fi


## Remove signature lines from template if signing is false.
if ! ${SIGN}
then
  sed -i '/<li>Signatures:/d' "${STAGING_FOLDER}/${WEB_NAME}.html"
fi

if [[ "$PARENT_ID" == "null" || "$PARENT_ID" == "" ]]
then
  ## Remove notarization lines from template if chain has no parent, or PBaaS is not (yet) enabled on the chain.
  sed -i '/notarized/d' "${STAGING_FOLDER}/${WEB_NAME}.html"
else
  ## replace placeholders with the parent name & notarization heights
  sed -i "s~%%PARENT_NAME%%~${PARENT_NAME}~gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
  sed -i "s~%%CHAIN_NOTARIZATION_HEIGHT%%~${CHAIN_NOTARIZATION_HEIGHT}~gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
  sed -i "s~%%PARENT_NOTARIZATION_HEIGHT%%~${PARENT_NOTARIZATION_HEIGHT}~gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
fi

## replace placeholders for values with recorded values
sed -i "s~%%EXPLORER_URL%%~${EXPLORER}~gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
sed -i "s/%%BOOTSTRAP_TIMESTAMP%%/${BOOTSTRAP_TIMESTAMP}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
sed -i "s/%%BOOTSTRAP_BESTBLOCKHASH%%/${BOOTSTRAP_BESTBLOCKHASH}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
sed -i "s/%%BOOTSTRAP_HEIGHT%%/${BOOTSTRAP_HEIGHT}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
if [[ "${DISTRIBUTION_TYPE}" == "zip" || "${DISTRIBUTION_TYPE}" == "both" ]]
then
  sed -i "s/%%ZIP_SIZE%%/${ZIP_SIZE}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
fi
if [[ "${DISTRIBUTION_TYPE}" == "tar" || "${DISTRIBUTION_TYPE}" == "both" ]]
then
  sed -i "s/%%TGZ_SIZE%%/${TGZ_SIZE}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
fi
sed -i "s/%%COIN%%/${COIN}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
sed -i "s/%%WEB_NAME%%/${WEB_NAME}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
sed -i "s/%%COIN_NAME%%/${COIN_NAME}/gip" "${STAGING_FOLDER}/${WEB_NAME}.html"
sed -i '$!N; /^\(.*\)\n\1$/!P; D' "${STAGING_FOLDER}/${WEB_NAME}.html"

## Insert Synchronization method into $WEB_NAME.html
if ! [[ "${CURRENT_RESYNC}" == "null" || "${CURRENT_REINDEX}" == "null" ]]; then
  if [[ "${CURRENT_RESYNC}" == "true" ]]; then
    mv "${STAGING_FOLDER}/${WEB_NAME}.html" "${STAGING_FOLDER}/${WEB_NAME}.tmp"
    { head -n 37 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; echo -e "\t\t\t\t\t<li>Before bootstrapping, the chain was <b>synchronized from genesis</b>.</li>"; tail -n +38 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}.html"
    rm -f "${STAGING_FOLDER}/${WEB_NAME}.tmp"
  elif [[ "${CURRENT_REINDEX}" == "true" ]]; then
    mv "${STAGING_FOLDER}/${WEB_NAME}.html" "${STAGING_FOLDER}/${WEB_NAME}.tmp"
    { head -n 37 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; echo -e "\t\t\t\t\t<li>Before bootstrapping, the chain was <b>reindexed</b>.</li>"; tail -n +38 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}.html"
    rm -f "${STAGING_FOLDER}/${WEB_NAME}.tmp"
  else
    mv "${STAGING_FOLDER}/${WEB_NAME}.html" "${STAGING_FOLDER}/${WEB_NAME}.tmp"
    { head -n 37 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; echo -e "\t\t\t\t\t<li>Before bootstrapping, the chain continued after the previous bootstrap.</li>"; tail -n +38 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}.html"
    rm -f "${STAGING_FOLDER}/${WEB_NAME}.tmp"
  fi
fi

## Fill $WEB_NAME.html with links from $WEB_NAME.json
m=$(${JQ} -r ".links | length" "${SCRIPT_DIR}/${FILE}.json")
for (( n=m-1; n>=0; n-- ))
do
  tag=$(${JQ} -r ".links[$n].tag" "${SCRIPT_DIR}/${FILE}.json")
  url=$(${JQ} -r ".links[$n].URL" "${SCRIPT_DIR}/${FILE}.json")
  mv "${STAGING_FOLDER}/${WEB_NAME}.html" "${STAGING_FOLDER}/${WEB_NAME}.tmp"
  { head -n 30 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; echo -e "\t\t\t\t\t<li>$tag: <a href=\"$url\" target=\"_blank\">$url</a></li>"; tail -n +31 "${STAGING_FOLDER}/${WEB_NAME}.tmp"; } > "${STAGING_FOLDER}/${WEB_NAME}.html"
  rm -f "${STAGING_FOLDER}/${WEB_NAME}.tmp"
done

## Copy to external staging locations
if [[ "${DEPLOY_EXTERNALLY}" == "true" ]]; then
  m=$(${JQ} -r ".deploy_locations | length" "${SCRIPT_DIR}/${FILE}.json")
  for (( n=m-1; n>=0; n-- ))
  do
    REMOTE_HOST=$(${JQ} -r ".deploy_locations[$n].host" "${SCRIPT_DIR}/${FILE}.json")
    REMOTE_WEB_ROOT=$(${JQ} -r ".deploy_locations[$n].web_root" "${SCRIPT_DIR}/${FILE}.json")
    ssh -q -t $REMOTE_HOST "rm -rf $REMOTE_WEB_ROOT/last.$WEB_NAME-bootstrap; mkdir $REMOTE_WEB_ROOT/stage.$WEB_NAME-bootstrap"
    scp -r $STAGING_FOLDER/* $REMOTE_HOST:$REMOTE_WEB_ROOT/stage.$WEB_NAME-bootstrap
  done
fi

## Moving folders for deployment
mv "${WEB_ROOT}/${WEB_NAME}-bootstrap" "${WEB_ROOT}/last.${WEB_NAME}-bootstrap"
mv "${STAGING_FOLDER}" "${WEB_ROOT}/${WEB_NAME}-bootstrap"

## Deploying externally staged locations
if [[ "${DEPLOY_EXTERNALLY}" == "true" ]]; then
  m=$(${JQ} -r ".deploy_locations | length" "${SCRIPT_DIR}/${FILE}.json")
  for (( n=m-1; n>=0; n-- ))
  do
    REMOTE_HOST=$(${JQ} -r ".deploy_locations[$n].host" "${SCRIPT_DIR}/${FILE}.json")
    REMOTE_WEB_ROOT=$(${JQ} -r ".deploy_locations[$n].web_root" "${SCRIPT_DIR}/${FILE}.json")
    ssh -q -t $REMOTE_HOST "mv $REMOTE_WEB_ROOT/$WEB_NAME-bootstrap $REMOTE_WEB_ROOT/last.$WEB_NAME-bootstrap; mv $REMOTE_WEB_ROOT/stage.$WEB_NAME-bootstrap $REMOTE_WEB_ROOT/$WEB_NAME-bootstrap && cd $REMOTE_WEB_ROOT/$WEB_NAME-bootstrap && ln -s $WEB_NAME.html index.html && chown -R www-data:www-data $REMOTE_WEB_ROOT/$WEB_NAME-bootstrap"
  done
fi

## Create symlink
cd "${WEB_ROOT}/${WEB_NAME}-bootstrap"
ln -s "${WEB_NAME}.html" index.html
cd /

## Set priviliges
chown -R www-data:www-data "${WEB_ROOT}/${WEB_NAME}-bootstrap"

## create an archive for the entire website, for manual distribution
if "${ARCHIVE}"
then
  ## remove web archive from the last.$WEB_NAME-bootstrap to conserve drivespace
  if [ ! -f "${WEB_ROOT}/last.${WEB_NAME}-bootstrap/${WEB_NAME}-bootstrap.tar" ]
  then
    rm -f "${WEB_ROOT}/last.${WEB_NAME}-bootstrap/${WEB_NAME}-bootstrap.tar"
  fi
  ## create archive
  cd "${WEB_ROOT}"
  tar -cvf "${WEB_NAME}-bootstrap.tar" "${WEB_NAME}-bootstrap"
  mv "${WEB_ROOT}/${WEB_NAME}-bootstrap.tar" "${WEB_ROOT}/${WEB_NAME}-bootstrap"
fi