acme.sh/acme.sh

#!/usr/bin/env sh

VER=2.7.3

PROJECT_NAME="acme.sh"

PROJECT_ENTRY="acme.sh"

PROJECT="https://github.com/Neilpang/$PROJECT_NAME"

DEFAULT_INSTALL_HOME="$HOME/.$PROJECT_NAME"
_SCRIPT_="$0"

_SUB_FOLDERS="dnsapi deploy"

_OLD_CA_HOST="https://acme-v01.api.letsencrypt.org"
DEFAULT_CA="https://acme-v01.api.letsencrypt.org/directory"
DEFAULT_AGREEMENT="https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf"

DEFAULT_USER_AGENT="$PROJECT_NAME/$VER ($PROJECT)"
DEFAULT_ACCOUNT_EMAIL=""

DEFAULT_ACCOUNT_KEY_LENGTH=2048
DEFAULT_DOMAIN_KEY_LENGTH=2048

DEFAULT_OPENSSL_BIN="openssl"

STAGE_CA="https://acme-staging.api.letsencrypt.org/directory"
_OLD_STAGE_CA_HOST="https://acme-staging.api.letsencrypt.org"

VTYPE_HTTP="http-01"
VTYPE_DNS="dns-01"
VTYPE_TLS="tls-sni-01"
#VTYPE_TLS2="tls-sni-02"

LOCAL_ANY_ADDRESS="0.0.0.0"

MAX_RENEW=60

DEFAULT_DNS_SLEEP=120

NO_VALUE="no"

W_TLS="tls"

MODE_STATELESS="stateless"

STATE_VERIFIED="verified_ok"

NGINX="nginx:"
NGINX_START="#ACME_NGINX_START"
NGINX_END="#ACME_NGINX_END"

BEGIN_CSR="-----BEGIN CERTIFICATE REQUEST-----"
END_CSR="-----END CERTIFICATE REQUEST-----"

BEGIN_CERT="-----BEGIN CERTIFICATE-----"
END_CERT="-----END CERTIFICATE-----"

RENEW_SKIP=2

ECC_SEP="_"
ECC_SUFFIX="${ECC_SEP}ecc"

LOG_LEVEL_1=1
LOG_LEVEL_2=2
LOG_LEVEL_3=3
DEFAULT_LOG_LEVEL="$LOG_LEVEL_1"

DEBUG_LEVEL_1=1
DEBUG_LEVEL_2=2
DEBUG_LEVEL_3=3
DEBUG_LEVEL_DEFAULT=$DEBUG_LEVEL_1
DEBUG_LEVEL_NONE=0

HIDDEN_VALUE="[hidden](please add '--output-insecure' to see this value)"

SYSLOG_ERROR="user.error"
SYSLOG_INFO="user.info"
SYSLOG_DEBUG="user.debug"

#error
SYSLOG_LEVEL_ERROR=3
#info
SYSLOG_LEVEL_INFO=6
#debug
SYSLOG_LEVEL_DEBUG=7
#debug2
SYSLOG_LEVEL_DEBUG_2=8
#debug3
SYSLOG_LEVEL_DEBUG_3=9

SYSLOG_LEVEL_DEFAULT=$SYSLOG_LEVEL_ERROR
#none
SYSLOG_LEVEL_NONE=0

_DEBUG_WIKI="https://github.com/Neilpang/acme.sh/wiki/How-to-debug-acme.sh"

_PREPARE_LINK="https://github.com/Neilpang/acme.sh/wiki/Install-preparations"

_STATELESS_WIKI="https://github.com/Neilpang/acme.sh/wiki/Stateless-Mode"

__INTERACTIVE=""
if [ -t 1 ]; then
  __INTERACTIVE="1"
fi

__green() {
  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
    printf '\033[1;31;32m'
  fi
  printf -- "%b" "$1"
  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
    printf '\033[0m'
  fi
}

__red() {
  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
    printf '\033[1;31;40m'
  fi
  printf -- "%b" "$1"
  if [ "$__INTERACTIVE${ACME_NO_COLOR}" = "1" ]; then
    printf '\033[0m'
  fi
}

_printargs() {
  if [ -z "$NO_TIMESTAMP" ] || [ "$NO_TIMESTAMP" = "0" ]; then
    printf -- "%s" "[$(date)] "
  fi
  if [ -z "$2" ]; then
    printf -- "%s" "$1"
  else
    printf -- "%s" "$1='$2'"
  fi
  printf "\n"
}

_dlg_versions() {
  echo "Diagnosis versions: "
  echo "openssl:$ACME_OPENSSL_BIN"
  if _exists "${ACME_OPENSSL_BIN:-openssl}"; then
    ${ACME_OPENSSL_BIN:-openssl} version 2>&1
  else
    echo "$ACME_OPENSSL_BIN doesn't exists."
  fi

  echo "apache:"
  if [ "$_APACHECTL" ] && _exists "$_APACHECTL"; then
    $_APACHECTL -V 2>&1
  else
    echo "apache doesn't exists."
  fi

  echo "nginx:"
  if _exists "nginx"; then
    nginx -V 2>&1
  else
    echo "nginx doesn't exists."
  fi

  echo "nc:"
  if _exists "nc"; then
    nc -h 2>&1
  else
    _debug "nc doesn't exists."
  fi
}

#class
_syslog() {
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" = "$SYSLOG_LEVEL_NONE" ]; then
    return
  fi
  _logclass="$1"
  shift
  if [ -z "$__logger_i" ]; then
    if _contains "$(logger --help 2>&1)" "-i"; then
      __logger_i="logger -i"
    else
      __logger_i="logger"
    fi
  fi
  $__logger_i -t "$PROJECT_NAME" -p "$_logclass" "$(_printargs "$@")" >/dev/null 2>&1
}

_log() {
  [ -z "$LOG_FILE" ] && return
  _printargs "$@" >>"$LOG_FILE"
}

_info() {
  _log "$@"
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" -ge "$SYSLOG_LEVEL_INFO" ]; then
    _syslog "$SYSLOG_INFO" "$@"
  fi
  _printargs "$@"
}

_err() {
  _syslog "$SYSLOG_ERROR" "$@"
  _log "$@"
  if [ -z "$NO_TIMESTAMP" ] || [ "$NO_TIMESTAMP" = "0" ]; then
    printf -- "%s" "[$(date)] " >&2
  fi
  if [ -z "$2" ]; then
    __red "$1" >&2
  else
    __red "$1='$2'" >&2
  fi
  printf "\n" >&2
  return 1
}

_usage() {
  __red "$@" >&2
  printf "\n" >&2
}

_debug() {
  if [ "${LOG_LEVEL:-$DEFAULT_LOG_LEVEL}" -ge "$LOG_LEVEL_1" ]; then
    _log "$@"
  fi
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" -ge "$SYSLOG_LEVEL_DEBUG" ]; then
    _syslog "$SYSLOG_DEBUG" "$@"
  fi
  if [ "${DEBUG:-$DEBUG_LEVEL_NONE}" -ge "$DEBUG_LEVEL_1" ]; then
    _printargs "$@" >&2
  fi
}

#output the sensitive messages
_secure_debug() {
  if [ "${LOG_LEVEL:-$DEFAULT_LOG_LEVEL}" -ge "$LOG_LEVEL_1" ]; then
    if [ "$OUTPUT_INSECURE" = "1" ]; then
      _log "$@"
    else
      _log "$1" "$HIDDEN_VALUE"
    fi
  fi
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" -ge "$SYSLOG_LEVEL_DEBUG" ]; then
    _syslog "$SYSLOG_DEBUG" "$1" "$HIDDEN_VALUE"
  fi
  if [ "${DEBUG:-$DEBUG_LEVEL_NONE}" -ge "$DEBUG_LEVEL_1" ]; then
    if [ "$OUTPUT_INSECURE" = "1" ]; then
      _printargs "$@" >&2
    else
      _printargs "$1" "$HIDDEN_VALUE" >&2
    fi
  fi
}

_debug2() {
  if [ "${LOG_LEVEL:-$DEFAULT_LOG_LEVEL}" -ge "$LOG_LEVEL_2" ]; then
    _log "$@"
  fi
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" -ge "$SYSLOG_LEVEL_DEBUG_2" ]; then
    _syslog "$SYSLOG_DEBUG" "$@"
  fi
  if [ "${DEBUG:-$DEBUG_LEVEL_NONE}" -ge "$DEBUG_LEVEL_2" ]; then
    _printargs "$@" >&2
  fi
}

_secure_debug2() {
  if [ "${LOG_LEVEL:-$DEFAULT_LOG_LEVEL}" -ge "$LOG_LEVEL_2" ]; then
    if [ "$OUTPUT_INSECURE" = "1" ]; then
      _log "$@"
    else
      _log "$1" "$HIDDEN_VALUE"
    fi
  fi
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" -ge "$SYSLOG_LEVEL_DEBUG_2" ]; then
    _syslog "$SYSLOG_DEBUG" "$1" "$HIDDEN_VALUE"
  fi
  if [ "${DEBUG:-$DEBUG_LEVEL_NONE}" -ge "$DEBUG_LEVEL_2" ]; then
    if [ "$OUTPUT_INSECURE" = "1" ]; then
      _printargs "$@" >&2
    else
      _printargs "$1" "$HIDDEN_VALUE" >&2
    fi
  fi
}

_debug3() {
  if [ "${LOG_LEVEL:-$DEFAULT_LOG_LEVEL}" -ge "$LOG_LEVEL_3" ]; then
    _log "$@"
  fi
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" -ge "$SYSLOG_LEVEL_DEBUG_3" ]; then
    _syslog "$SYSLOG_DEBUG" "$@"
  fi
  if [ "${DEBUG:-$DEBUG_LEVEL_NONE}" -ge "$DEBUG_LEVEL_3" ]; then
    _printargs "$@" >&2
  fi
}

_secure_debug3() {
  if [ "${LOG_LEVEL:-$DEFAULT_LOG_LEVEL}" -ge "$LOG_LEVEL_3" ]; then
    if [ "$OUTPUT_INSECURE" = "1" ]; then
      _log "$@"
    else
      _log "$1" "$HIDDEN_VALUE"
    fi
  fi
  if [ "${SYS_LOG:-$SYSLOG_LEVEL_NONE}" -ge "$SYSLOG_LEVEL_DEBUG_3" ]; then
    _syslog "$SYSLOG_DEBUG" "$1" "$HIDDEN_VALUE"
  fi
  if [ "${DEBUG:-$DEBUG_LEVEL_NONE}" -ge "$DEBUG_LEVEL_3" ]; then
    if [ "$OUTPUT_INSECURE" = "1" ]; then
      _printargs "$@" >&2
    else
      _printargs "$1" "$HIDDEN_VALUE" >&2
    fi
  fi
}

_upper_case() {
  # shellcheck disable=SC2018,SC2019
  tr 'a-z' 'A-Z'
}

_lower_case() {
  # shellcheck disable=SC2018,SC2019
  tr 'A-Z' 'a-z'
}

_startswith() {
  _str="$1"
  _sub="$2"
  echo "$_str" | grep "^$_sub" >/dev/null 2>&1
}

_endswith() {
  _str="$1"
  _sub="$2"
  echo "$_str" | grep -- "$_sub\$" >/dev/null 2>&1
}

_contains() {
  _str="$1"
  _sub="$2"
  echo "$_str" | grep -- "$_sub" >/dev/null 2>&1
}

_hasfield() {
  _str="$1"
  _field="$2"
  _sep="$3"
  if [ -z "$_field" ]; then
    _usage "Usage: str field  [sep]"
    return 1
  fi

  if [ -z "$_sep" ]; then
    _sep=","
  fi

  for f in $(echo "$_str" | tr "$_sep" ' '); do
    if [ "$f" = "$_field" ]; then
      _debug2 "'$_str' contains '$_field'"
      return 0 #contains ok
    fi
  done
  _debug2 "'$_str' does not contain '$_field'"
  return 1 #not contains
}

_getfield() {
  _str="$1"
  _findex="$2"
  _sep="$3"

  if [ -z "$_findex" ]; then
    _usage "Usage: str field  [sep]"
    return 1
  fi

  if [ -z "$_sep" ]; then
    _sep=","
  fi

  _ffi="$_findex"
  while [ "$_ffi" -gt "0" ]; do
    _fv="$(echo "$_str" | cut -d "$_sep" -f "$_ffi")"
    if [ "$_fv" ]; then
      printf -- "%s" "$_fv"
      return 0
    fi
    _ffi="$(_math "$_ffi" - 1)"
  done

  printf -- "%s" "$_str"

}

_exists() {
  cmd="$1"
  if [ -z "$cmd" ]; then
    _usage "Usage: _exists cmd"
    return 1
  fi

  if eval type type >/dev/null 2>&1; then
    eval type "$cmd" >/dev/null 2>&1
  elif command >/dev/null 2>&1; then
    command -v "$cmd" >/dev/null 2>&1
  else
    which "$cmd" >/dev/null 2>&1
  fi
  ret="$?"
  _debug3 "$cmd exists=$ret"
  return $ret
}

#a + b
_math() {
  _m_opts="$@"
  printf "%s" "$(($_m_opts))"
}

_h_char_2_dec() {
  _ch=$1
  case "${_ch}" in
    a | A)
      printf "10"
      ;;
    b | B)
      printf "11"
      ;;
    c | C)
      printf "12"
      ;;
    d | D)
      printf "13"
      ;;
    e | E)
      printf "14"
      ;;
    f | F)
      printf "15"
      ;;
    *)
      printf "%s" "$_ch"
      ;;
  esac

}

_URGLY_PRINTF=""
if [ "$(printf '\x41')" != 'A' ]; then
  _URGLY_PRINTF=1
fi

_ESCAPE_XARGS=""
if _exists xargs && [ "$(printf %s '\\x41' | xargs printf)" = 'A' ]; then
  _ESCAPE_XARGS=1
fi

_h2b() {
  if _exists xxd; then
    xxd -r -p
    return
  fi

  hex=$(cat)
  ic=""
  jc=""
  _debug2 _URGLY_PRINTF "$_URGLY_PRINTF"
  if [ -z "$_URGLY_PRINTF" ]; then
    if [ "$_ESCAPE_XARGS" ] && _exists xargs; then
      _debug2 "xargs"
      echo "$hex" | _upper_case | sed 's/\([0-9A-F]\{2\}\)/\\\\\\x\1/g' | xargs printf
    else
      for h in $(echo "$hex" | _upper_case | sed 's/\([0-9A-F]\{2\}\)/ \1/g'); do
        if [ -z "$h" ]; then
          break
        fi
        printf "\x$h%s"
      done
    fi
  else
    for c in $(echo "$hex" | _upper_case | sed 's/\([0-9A-F]\)/ \1/g'); do
      if [ -z "$ic" ]; then
        ic=$c
        continue
      fi
      jc=$c
      ic="$(_h_char_2_dec "$ic")"
      jc="$(_h_char_2_dec "$jc")"
      printf '\'"$(printf "%o" "$(_math "$ic" \* 16 + $jc)")""%s"
      ic=""
      jc=""
    done
  fi

}

_is_solaris() {
  _contains "${__OS__:=$(uname -a)}" "solaris" || _contains "${__OS__:=$(uname -a)}" "SunOS"
}

#_ascii_hex str
#this can only process ascii chars, should only be used when od command is missing as a backup way.
_ascii_hex() {
  _debug2 "Using _ascii_hex"
  _str="$1"
  _str_len=${#_str}
  _h_i=1
  while [ "$_h_i" -le "$_str_len" ]; do
    _str_c="$(printf "%s" "$_str" | cut -c "$_h_i")"
    printf " %02x" "'$_str_c"
    _h_i="$(_math "$_h_i" + 1)"
  done
}

#stdin  output hexstr splited by one space
#input:"abc"
#output: " 61 62 63"
_hex_dump() {
  if _exists od; then
    od -A n -v -t x1 | tr -s " " | sed 's/ $//' | tr -d "\r\t\n"
  elif _exists hexdump; then
    _debug3 "using hexdump"
    hexdump -v -e '/1 ""' -e '/1 " %02x" ""'
  elif _exists xxd; then
    _debug3 "using xxd"
    xxd -ps -c 20 -i | sed "s/ 0x/ /g" | tr -d ",\n" | tr -s " "
  else
    _debug3 "using _ascii_hex"
    str=$(cat)
    _ascii_hex "$str"
  fi
}

#url encode, no-preserved chars
#A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z
#41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f 50 51 52 53 54 55 56 57 58 59 5a

#a  b  c  d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t  u  v  w  x  y  z
#61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f 70 71 72 73 74 75 76 77 78 79 7a

#0  1  2  3  4  5  6  7  8  9  -  _  .  ~
#30 31 32 33 34 35 36 37 38 39 2d 5f 2e 7e

#stdin stdout
_url_encode() {
  _hex_str=$(_hex_dump)
  _debug3 "_url_encode"
  _debug3 "_hex_str" "$_hex_str"
  for _hex_code in $_hex_str; do
    #upper case
    case "${_hex_code}" in
      "41")
        printf "%s" "A"
        ;;
      "42")
        printf "%s" "B"
        ;;
      "43")
        printf "%s" "C"
        ;;
      "44")
        printf "%s" "D"
        ;;
      "45")
        printf "%s" "E"
        ;;
      "46")
        printf "%s" "F"
        ;;
      "47")
        printf "%s" "G"
        ;;
      "48")
        printf "%s" "H"
        ;;
      "49")
        printf "%s" "I"
        ;;
      "4a")
        printf "%s" "J"
        ;;
      "4b")
        printf "%s" "K"
        ;;
      "4c")
        printf "%s" "L"
        ;;
      "4d")
        printf "%s" "M"
        ;;
      "4e")
        printf "%s" "N"
        ;;
      "4f")
        printf "%s" "O"
        ;;
      "50")
        printf "%s" "P"
        ;;
      "51")
        printf "%s" "Q"
        ;;
      "52")
        printf "%s" "R"
        ;;
      "53")
        printf "%s" "S"
        ;;
      "54")
        printf "%s" "T"
        ;;
      "55")
        printf "%s" "U"
        ;;
      "56")
        printf "%s" "V"
        ;;
      "57")
        printf "%s" "W"
        ;;
      "58")
        printf "%s" "X"
        ;;
      "59")
        printf "%s" "Y"
        ;;
      "5a")
        printf "%s" "Z"
        ;;

      #lower case
      "61")
        printf "%s" "a"
        ;;
      "62")
        printf "%s" "b"
        ;;
      "63")
        printf "%s" "c"
        ;;
      "64")
        printf "%s" "d"
        ;;
      "65")
        printf "%s" "e"
        ;;
      "66")
        printf "%s" "f"
        ;;
      "67")
        printf "%s" "g"
        ;;
      "68")
        printf "%s" "h"
        ;;
      "69")
        printf "%s" "i"
        ;;
      "6a")
        printf "%s" "j"
        ;;
      "6b")
        printf "%s" "k"
        ;;
      "6c")
        printf "%s" "l"
        ;;
      "6d")
        printf "%s" "m"
        ;;
      "6e")
        printf "%s" "n"
        ;;
      "6f")
        printf "%s" "o"
        ;;
      "70")
        printf "%s" "p"
        ;;
      "71")
        printf "%s" "q"
        ;;
      "72")
        printf "%s" "r"
        ;;
      "73")
        printf "%s" "s"
        ;;
      "74")
        printf "%s" "t"
        ;;
      "75")
        printf "%s" "u"
        ;;
      "76")
        printf "%s" "v"
        ;;
      "77")
        printf "%s" "w"
        ;;
      "78")
        printf "%s" "x"
        ;;
      "79")
        printf "%s" "y"
        ;;
      "7a")
        printf "%s" "z"
        ;;
      #numbers
      "30")
        printf "%s" "0"
        ;;
      "31")
        printf "%s" "1"
        ;;
      "32")
        printf "%s" "2"
        ;;
      "33")
        printf "%s" "3"
        ;;
      "34")
        printf "%s" "4"
        ;;
      "35")
        printf "%s" "5"
        ;;
      "36")
        printf "%s" "6"
        ;;
      "37")
        printf "%s" "7"
        ;;
      "38")
        printf "%s" "8"
        ;;
      "39")
        printf "%s" "9"
        ;;
      "2d")
        printf "%s" "-"
        ;;
      "5f")
        printf "%s" "_"
        ;;
      "2e")
        printf "%s" "."
        ;;
      "7e")
        printf "%s" "~"
        ;;
      #other hex
      *)
        printf '%%%s' "$_hex_code"
        ;;
    esac
  done
}

#options file
_sed_i() {
  options="$1"
  filename="$2"
  if [ -z "$filename" ]; then
    _usage "Usage:_sed_i options filename"
    return 1
  fi
  _debug2 options "$options"
  if sed -h 2>&1 | grep "\-i\[SUFFIX]" >/dev/null 2>&1; then
    _debug "Using sed  -i"
    sed -i "$options" "$filename"
  else
    _debug "No -i support in sed"
    text="$(cat "$filename")"
    echo "$text" | sed "$options" >"$filename"
  fi
}

_egrep_o() {
  if ! egrep -o "$1" 2>/dev/null; then
    sed -n 's/.*\('"$1"'\).*/\1/p'
  fi
}

#Usage: file startline endline
_getfile() {
  filename="$1"
  startline="$2"
  endline="$3"
  if [ -z "$endline" ]; then
    _usage "Usage: file startline endline"
    return 1
  fi

  i="$(grep -n -- "$startline" "$filename" | cut -d : -f 1)"
  if [ -z "$i" ]; then
    _err "Can not find start line: $startline"
    return 1
  fi
  i="$(_math "$i" + 1)"
  _debug i "$i"

  j="$(grep -n -- "$endline" "$filename" | cut -d : -f 1)"
  if [ -z "$j" ]; then
    _err "Can not find end line: $endline"
    return 1
  fi
  j="$(_math "$j" - 1)"
  _debug j "$j"

  sed -n "$i,${j}p" "$filename"

}

#Usage: multiline
_base64() {
  [ "" ] #urgly
  if [ "$1" ]; then
    _debug3 "base64 multiline:'$1'"
    ${ACME_OPENSSL_BIN:-openssl} base64 -e
  else
    _debug3 "base64 single line."
    ${ACME_OPENSSL_BIN:-openssl} base64 -e | tr -d '\r\n'
  fi
}

#Usage: multiline
_dbase64() {
  if [ "$1" ]; then
    ${ACME_OPENSSL_BIN:-openssl} base64 -d -A
  else
    ${ACME_OPENSSL_BIN:-openssl} base64 -d
  fi
}

#Usage: hashalg  [outputhex]
#Output Base64-encoded digest
_digest() {
  alg="$1"
  if [ -z "$alg" ]; then
    _usage "Usage: _digest hashalg"
    return 1
  fi

  outputhex="$2"

  if [ "$alg" = "sha256" ] || [ "$alg" = "sha1" ] || [ "$alg" = "md5" ]; then
    if [ "$outputhex" ]; then
      ${ACME_OPENSSL_BIN:-openssl} dgst -"$alg" -hex | cut -d = -f 2 | tr -d ' '
    else
      ${ACME_OPENSSL_BIN:-openssl} dgst -"$alg" -binary | _base64
    fi
  else
    _err "$alg is not supported yet"
    return 1
  fi

}

#Usage: hashalg  secret_hex  [outputhex]
#Output binary hmac
_hmac() {
  alg="$1"
  secret_hex="$2"
  outputhex="$3"

  if [ -z "$secret_hex" ]; then
    _usage "Usage: _hmac hashalg secret [outputhex]"
    return 1
  fi

  if [ "$alg" = "sha256" ] || [ "$alg" = "sha1" ]; then
    if [ "$outputhex" ]; then
      (${ACME_OPENSSL_BIN:-openssl} dgst -"$alg" -mac HMAC -macopt "hexkey:$secret_hex" 2>/dev/null || ${ACME_OPENSSL_BIN:-openssl} dgst -"$alg" -hmac "$(printf "%s" "$secret_hex" | _h2b)") | cut -d = -f 2 | tr -d ' '
    else
      ${ACME_OPENSSL_BIN:-openssl} dgst -"$alg" -mac HMAC -macopt "hexkey:$secret_hex" -binary 2>/dev/null || ${ACME_OPENSSL_BIN:-openssl} dgst -"$alg" -hmac "$(printf "%s" "$secret_hex" | _h2b)" -binary
    fi
  else
    _err "$alg is not supported yet"
    return 1
  fi

}

#Usage: keyfile hashalg
#Output: Base64-encoded signature value
_sign() {
  keyfile="$1"
  alg="$2"
  if [ -z "$alg" ]; then
    _usage "Usage: _sign keyfile hashalg"
    return 1
  fi

  _sign_openssl="${ACME_OPENSSL_BIN:-openssl} dgst -sign $keyfile "
  if [ "$alg" = "sha256" ]; then
    _sign_openssl="$_sign_openssl -$alg"
  else
    _err "$alg is not supported yet"
    return 1
  fi

  if grep "BEGIN RSA PRIVATE KEY" "$keyfile" >/dev/null 2>&1; then
    $_sign_openssl | _base64
  elif grep "BEGIN EC PRIVATE KEY" "$keyfile" >/dev/null 2>&1; then
    if ! _signedECText="$($_sign_openssl | ${ACME_OPENSSL_BIN:-openssl} asn1parse -inform DER)"; then
      _err "Sign failed: $_sign_openssl"
      _err "Key file: $keyfile"
      _err "Key content:$(wc -l <"$keyfile") lines"
      return 1
    fi
    _debug3 "_signedECText" "$_signedECText"
    _ec_r="$(echo "$_signedECText" | _head_n 2 | _tail_n 1 | cut -d : -f 4 | tr -d "\r\n")"
    _debug3 "_ec_r" "$_ec_r"
    _ec_s="$(echo "$_signedECText" | _head_n 3 | _tail_n 1 | cut -d : -f 4 | tr -d "\r\n")"
    _debug3 "_ec_s" "$_ec_s"
    printf "%s" "$_ec_r$_ec_s" | _h2b | _base64
  else
    _err "Unknown key file format."
    return 1
  fi

}

#keylength
_isEccKey() {
  _length="$1"

  if [ -z "$_length" ]; then
    return 1
  fi

  [ "$_length" != "1024" ] \
    && [ "$_length" != "2048" ] \
    && [ "$_length" != "3072" ] \
    && [ "$_length" != "4096" ] \
    && [ "$_length" != "8192" ]
}

# _createkey  2048|ec-256   file
_createkey() {
  length="$1"
  f="$2"
  _debug2 "_createkey for file:$f"
  eccname="$length"
  if _startswith "$length" "ec-"; then
    length=$(printf "%s" "$length" | cut -d '-' -f 2-100)

    if [ "$length" = "256" ]; then
      eccname="prime256v1"
    fi
    if [ "$length" = "384" ]; then
      eccname="secp384r1"
    fi
    if [ "$length" = "521" ]; then
      eccname="secp521r1"
    fi

  fi

  if [ -z "$length" ]; then
    length=2048
  fi

  _debug "Use length $length"

  if ! touch "$f" >/dev/null 2>&1; then
    _f_path="$(dirname "$f")"
    _debug _f_path "$_f_path"
    if ! mkdir -p "$_f_path"; then
      _err "Can not create path: $_f_path"
      return 1
    fi
  fi

  if _isEccKey "$length"; then
    _debug "Using ec name: $eccname"
    ${ACME_OPENSSL_BIN:-openssl} ecparam -name "$eccname" -genkey 2>/dev/null >"$f"
  else
    _debug "Using RSA: $length"
    ${ACME_OPENSSL_BIN:-openssl} genrsa "$length" 2>/dev/null >"$f"
  fi

  if [ "$?" != "0" ]; then
    _err "Create key error."
    return 1
  fi
}

#domain
_is_idn() {
  _is_idn_d="$1"
  _debug2 _is_idn_d "$_is_idn_d"
  _idn_temp=$(printf "%s" "$_is_idn_d" | tr -d '0-9' | tr -d 'a-z' | tr -d 'A-Z' | tr -d '.,-')
  _debug2 _idn_temp "$_idn_temp"
  [ "$_idn_temp" ]
}

#aa.com
#aa.com,bb.com,cc.com
_idn() {
  __idn_d="$1"
  if ! _is_idn "$__idn_d"; then
    printf "%s" "$__idn_d"
    return 0
  fi

  if _exists idn; then
    if _contains "$__idn_d" ','; then
      _i_first="1"
      for f in $(echo "$__idn_d" | tr ',' ' '); do
        [ -z "$f" ] && continue
        if [ -z "$_i_first" ]; then
          printf "%s" ","
        else
          _i_first=""
        fi
        idn --quiet "$f" | tr -d "\r\n"
      done
    else
      idn "$__idn_d" | tr -d "\r\n"
    fi
  else
    _err "Please install idn to process IDN names."
  fi
}

#_createcsr  cn  san_list  keyfile csrfile conf
_createcsr() {
  _debug _createcsr
  domain="$1"
  domainlist="$2"
  csrkey="$3"
  csr="$4"
  csrconf="$5"
  _debug2 domain "$domain"
  _debug2 domainlist "$domainlist"
  _debug2 csrkey "$csrkey"
  _debug2 csr "$csr"
  _debug2 csrconf "$csrconf"

  printf "[ req_distinguished_name ]\n[ req ]\ndistinguished_name = req_distinguished_name\nreq_extensions = v3_req\n[ v3_req ]\n\nkeyUsage = nonRepudiation, digitalSignature, keyEncipherment" >"$csrconf"

  if [ -z "$domainlist" ] || [ "$domainlist" = "$NO_VALUE" ]; then
    #single domain
    _info "Single domain" "$domain"
  else
    domainlist="$(_idn "$domainlist")"
    _debug2 domainlist "$domainlist"
    if _contains "$domainlist" ","; then
      alt="DNS:$(echo "$domainlist" | sed "s/,/,DNS:/g")"
    else
      alt="DNS:$domainlist"
    fi
    #multi
    _info "Multi domain" "$alt"
    printf -- "\nsubjectAltName=$alt" >>"$csrconf"
  fi
  if [ "$Le_OCSP_Staple" ] || [ "$Le_OCSP_Stable" ]; then
    _savedomainconf Le_OCSP_Staple "$Le_OCSP_Staple"
    _cleardomainconf Le_OCSP_Stable
    printf -- "\nbasicConstraints = CA:FALSE\n1.3.6.1.5.5.7.1.24=DER:30:03:02:01:05" >>"$csrconf"
  fi

  _csr_cn="$(_idn "$domain")"
  _debug2 _csr_cn "$_csr_cn"
  if _contains "$(uname -a)" "MINGW"; then
    ${ACME_OPENSSL_BIN:-openssl} req -new -sha256 -key "$csrkey" -subj "//CN=$_csr_cn" -config "$csrconf" -out "$csr"
  else
    ${ACME_OPENSSL_BIN:-openssl} req -new -sha256 -key "$csrkey" -subj "/CN=$_csr_cn" -config "$csrconf" -out "$csr"
  fi
}

#_signcsr key  csr  conf cert
_signcsr() {
  key="$1"
  csr="$2"
  conf="$3"
  cert="$4"
  _debug "_signcsr"

  _msg="$(${ACME_OPENSSL_BIN:-openssl} x509 -req -days 365 -in "$csr" -signkey "$key" -extensions v3_req -extfile "$conf" -out "$cert" 2>&1)"
  _ret="$?"
  _debug "$_msg"
  return $_ret
}

#_csrfile
_readSubjectFromCSR() {
  _csrfile="$1"
  if [ -z "$_csrfile" ]; then
    _usage "_readSubjectFromCSR mycsr.csr"
    return 1
  fi
  ${ACME_OPENSSL_BIN:-openssl} req -noout -in "$_csrfile" -subject | tr ',' "\n" | _egrep_o "CN *=.*" | cut -d = -f 2 | cut -d / -f 1 | tr -d ' \n'
}

#_csrfile
#echo comma separated domain list
_readSubjectAltNamesFromCSR() {
  _csrfile="$1"
  if [ -z "$_csrfile" ]; then
    _usage "_readSubjectAltNamesFromCSR mycsr.csr"
    return 1
  fi

  _csrsubj="$(_readSubjectFromCSR "$_csrfile")"
  _debug _csrsubj "$_csrsubj"

  _dnsAltnames="$(${ACME_OPENSSL_BIN:-openssl} req -noout -text -in "$_csrfile" | grep "^ *DNS:.*" | tr -d ' \n')"
  _debug _dnsAltnames "$_dnsAltnames"

  if _contains "$_dnsAltnames," "DNS:$_csrsubj,"; then
    _debug "AltNames contains subject"
    _dnsAltnames="$(printf "%s" "$_dnsAltnames," | sed "s/DNS:$_csrsubj,//g")"
  else
    _debug "AltNames doesn't contain subject"
  fi

  printf "%s" "$_dnsAltnames" | sed "s/DNS://g"
}

#_csrfile
_readKeyLengthFromCSR() {
  _csrfile="$1"
  if [ -z "$_csrfile" ]; then
    _usage "_readKeyLengthFromCSR mycsr.csr"
    return 1
  fi

  _outcsr="$(${ACME_OPENSSL_BIN:-openssl} req -noout -text -in "$_csrfile")"
  _debug2 _outcsr "$_outcsr"
  if _contains "$_outcsr" "Public Key Algorithm: id-ecPublicKey"; then
    _debug "ECC CSR"
    echo "$_outcsr" | tr "\t" " " | _egrep_o "^ *ASN1 OID:.*" | cut -d ':' -f 2 | tr -d ' '
  else
    _debug "RSA CSR"
    _rkl="$(echo "$_outcsr" | tr "\t" " " | _egrep_o "^ *Public.Key:.*" | cut -d '(' -f 2 | cut -d ' ' -f 1)"
    if [ "$_rkl" ]; then
      echo "$_rkl"
    else
      echo "$_outcsr" | tr "\t" " " | _egrep_o "RSA Public.Key:.*" | cut -d '(' -f 2 | cut -d ' ' -f 1
    fi
  fi
}

_ss() {
  _port="$1"

  if _exists "ss"; then
    _debug "Using: ss"
    ss -ntpl | grep ":$_port "
    return 0
  fi

  if _exists "netstat"; then
    _debug "Using: netstat"
    if netstat -h 2>&1 | grep "\-p proto" >/dev/null; then
      #for windows version netstat tool
      netstat -an -p tcp | grep "LISTENING" | grep ":$_port "
    else
      if netstat -help 2>&1 | grep "\-p protocol" >/dev/null; then
        netstat -an -p tcp | grep LISTEN | grep ":$_port "
      elif netstat -help 2>&1 | grep -- '-P protocol' >/dev/null; then
        #for solaris
        netstat -an -P tcp | grep "\.$_port " | grep "LISTEN"
      elif netstat -help 2>&1 | grep "\-p" >/dev/null; then
        #for full linux
        netstat -ntpl | grep ":$_port "
      else
        #for busybox (embedded linux; no pid support)
        netstat -ntl 2>/dev/null | grep ":$_port "
      fi
    fi
    return 0
  fi

  return 1
}

#domain [password] [isEcc]
toPkcs() {
  domain="$1"
  pfxPassword="$2"
  if [ -z "$domain" ]; then
    _usage "Usage: $PROJECT_ENTRY --toPkcs -d domain [--password pfx-password]"
    return 1
  fi

  _isEcc="$3"

  _initpath "$domain" "$_isEcc"

  if [ "$pfxPassword" ]; then
    ${ACME_OPENSSL_BIN:-openssl} pkcs12 -export -out "$CERT_PFX_PATH" -inkey "$CERT_KEY_PATH" -in "$CERT_PATH" -certfile "$CA_CERT_PATH" -password "pass:$pfxPassword"
  else
    ${ACME_OPENSSL_BIN:-openssl} pkcs12 -export -out "$CERT_PFX_PATH" -inkey "$CERT_KEY_PATH" -in "$CERT_PATH" -certfile "$CA_CERT_PATH"
  fi

  if [ "$?" = "0" ]; then
    _info "Success, Pfx is exported to: $CERT_PFX_PATH"
  fi

}

#domain [isEcc]
toPkcs8() {
  domain="$1"

  if [ -z "$domain" ]; then
    _usage "Usage: $PROJECT_ENTRY --toPkcs8 -d domain [--ecc]"
    return 1
  fi

  _isEcc="$2"

  _initpath "$domain" "$_isEcc"

  ${ACME_OPENSSL_BIN:-openssl} pkcs8 -topk8 -inform PEM -outform PEM -nocrypt -in "$CERT_KEY_PATH" -out "$CERT_PKCS8_PATH"

  if [ "$?" = "0" ]; then
    _info "Success, $CERT_PKCS8_PATH"
  fi

}

#[2048]
createAccountKey() {
  _info "Creating account key"
  if [ -z "$1" ]; then
    _usage "Usage: $PROJECT_ENTRY --createAccountKey --accountkeylength 2048"
    return
  fi

  length=$1
  _create_account_key "$length"

}

_create_account_key() {

  length=$1

  if [ -z "$length" ] || [ "$length" = "$NO_VALUE" ]; then
    _debug "Use default length $DEFAULT_ACCOUNT_KEY_LENGTH"
    length="$DEFAULT_ACCOUNT_KEY_LENGTH"
  fi

  _debug length "$length"
  _initpath

  mkdir -p "$CA_DIR"
  if [ -f "$ACCOUNT_KEY_PATH" ]; then
    _info "Account key exists, skip"
    return
  else
    #generate account key
    _createkey "$length" "$ACCOUNT_KEY_PATH"
  fi

}

#domain [length]
createDomainKey() {
  _info "Creating domain key"
  if [ -z "$1" ]; then
    _usage "Usage: $PROJECT_ENTRY --createDomainKey -d domain.com  [ --keylength 2048 ]"
    return
  fi

  domain=$1
  _cdl=$2

  if [ -z "$_cdl" ]; then
    _debug "Use DEFAULT_DOMAIN_KEY_LENGTH=$DEFAULT_DOMAIN_KEY_LENGTH"
    _cdl="$DEFAULT_DOMAIN_KEY_LENGTH"
  fi

  _initpath "$domain" "$_cdl"

  if [ ! -f "$CERT_KEY_PATH" ] || ([ "$FORCE" ] && ! [ "$IS_RENEW" ]); then
    if _createkey "$_cdl" "$CERT_KEY_PATH"; then
      _savedomainconf Le_Keylength "$_cdl"
      _info "The domain key is here: $(__green $CERT_KEY_PATH)"
    fi
  else
    if [ "$IS_RENEW" ]; then
      _info "Domain key exists, skip"
      return 0
    else
      _err "Domain key exists, do you want to overwrite the key?"
      _err "Add '--force', and try again."
      return 1
    fi
  fi

}

# domain  domainlist isEcc
createCSR() {
  _info "Creating csr"
  if [ -z "$1" ]; then
    _usage "Usage: $PROJECT_ENTRY --createCSR -d domain1.com [-d domain2.com  -d domain3.com ... ]"
    return
  fi

  domain="$1"
  domainlist="$2"
  _isEcc="$3"

  _initpath "$domain" "$_isEcc"

  if [ -f "$CSR_PATH" ] && [ "$IS_RENEW" ] && [ -z "$FORCE" ]; then
    _info "CSR exists, skip"
    return
  fi

  if [ ! -f "$CERT_KEY_PATH" ]; then
    _err "The key file is not found: $CERT_KEY_PATH"
    _err "Please create the key file first."
    return 1
  fi
  _createcsr "$domain" "$domainlist" "$CERT_KEY_PATH" "$CSR_PATH" "$DOMAIN_SSL_CONF"

}

_url_replace() {
  tr '/+' '_-' | tr -d '= '
}

_time2str() {
  #Linux
  if date -u -d@"$1" 2>/dev/null; then
    return
  fi

  #BSD
  if date -u -r "$1" 2>/dev/null; then
    return
  fi

  #Soaris
  if _exists adb; then
    _t_s_a=$(echo "0t${1}=Y" | adb)
    echo "$_t_s_a"
  fi

}

_normalizeJson() {
  sed "s/\" *: *\([\"{\[]\)/\":\1/g" | sed "s/^ *\([^ ]\)/\1/" | tr -d "\r\n"
}

_stat() {
  #Linux
  if stat -c '%U:%G' "$1" 2>/dev/null; then
    return
  fi

  #BSD
  if stat -f '%Su:%Sg' "$1" 2>/dev/null; then
    return
  fi

  return 1 #error, 'stat' not found
}

#keyfile
_calcjwk() {
  keyfile="$1"
  if [ -z "$keyfile" ]; then
    _usage "Usage: _calcjwk keyfile"
    return 1
  fi

  if [ "$JWK_HEADER" ] && [ "$__CACHED_JWK_KEY_FILE" = "$keyfile" ]; then
    _debug2 "Use cached jwk for file: $__CACHED_JWK_KEY_FILE"
    return 0
  fi

  if grep "BEGIN RSA PRIVATE KEY" "$keyfile" >/dev/null 2>&1; then
    _debug "RSA key"
    pub_exp=$(${ACME_OPENSSL_BIN:-openssl} rsa -in "$keyfile" -noout -text | grep "^publicExponent:" | cut -d '(' -f 2 | cut -d 'x' -f 2 | cut -d ')' -f 1)
    if [ "${#pub_exp}" = "5" ]; then
      pub_exp=0$pub_exp
    fi
    _debug3 pub_exp "$pub_exp"

    e=$(echo "$pub_exp" | _h2b | _base64)
    _debug3 e "$e"

    modulus=$(${ACME_OPENSSL_BIN:-openssl} rsa -in "$keyfile" -modulus -noout | cut -d '=' -f 2)
    _debug3 modulus "$modulus"
    n="$(printf "%s" "$modulus" | _h2b | _base64 | _url_replace)"
    _debug3 n "$n"

    jwk='{"e": "'$e'", "kty": "RSA", "n": "'$n'"}'
    _debug3 jwk "$jwk"

    JWK_HEADER='{"alg": "RS256", "jwk": '$jwk'}'
    JWK_HEADERPLACE_PART1='{"nonce": "'
    JWK_HEADERPLACE_PART2='", "alg": "RS256", "jwk": '$jwk'}'
  elif grep "BEGIN EC PRIVATE KEY" "$keyfile" >/dev/null 2>&1; then
    _debug "EC key"
    crv="$(${ACME_OPENSSL_BIN:-openssl} ec -in "$keyfile" -noout -text 2>/dev/null | grep "^NIST CURVE:" | cut -d ":" -f 2 | tr -d " \r\n")"
    _debug3 crv "$crv"

    if [ -z "$crv" ]; then
      _debug "Let's try ASN1 OID"
      crv_oid="$(${ACME_OPENSSL_BIN:-openssl} ec -in "$keyfile" -noout -text 2>/dev/null | grep "^ASN1 OID:" | cut -d ":" -f 2 | tr -d " \r\n")"
      _debug3 crv_oid "$crv_oid"
      case "${crv_oid}" in
        "prime256v1")
          crv="P-256"
          ;;
        "secp384r1")
          crv="P-384"
          ;;
        "secp521r1")
          crv="P-521"
          ;;
        *)
          _err "ECC oid : $crv_oid"
          return 1
          ;;
      esac
      _debug3 crv "$crv"
    fi

    pubi="$(${ACME_OPENSSL_BIN:-openssl} ec -in "$keyfile" -noout -text 2>/dev/null | grep -n pub: | cut -d : -f 1)"
    pubi=$(_math "$pubi" + 1)
    _debug3 pubi "$pubi"

    pubj="$(${ACME_OPENSSL_BIN:-openssl} ec -in "$keyfile" -noout -text 2>/dev/null | grep -n "ASN1 OID:" | cut -d : -f 1)"
    pubj=$(_math "$pubj" - 1)
    _debug3 pubj "$pubj"

    pubtext="$(${ACME_OPENSSL_BIN:-openssl} ec -in "$keyfile" -noout -text 2>/dev/null | sed -n "$pubi,${pubj}p" | tr -d " \n\r")"
    _debug3 pubtext "$pubtext"

    xlen="$(printf "%s" "$pubtext" | tr -d ':' | wc -c)"
    xlen=$(_math "$xlen" / 4)
    _debug3 xlen "$xlen"

    xend=$(_math "$xlen" + 1)
    x="$(printf "%s" "$pubtext" | cut -d : -f 2-"$xend")"
    _debug3 x "$x"

    x64="$(printf "%s" "$x" | tr -d : | _h2b | _base64 | _url_replace)"
    _debug3 x64 "$x64"

    xend=$(_math "$xend" + 1)
    y="$(printf "%s" "$pubtext" | cut -d : -f "$xend"-10000)"
    _debug3 y "$y"

    y64="$(printf "%s" "$y" | tr -d : | _h2b | _base64 | _url_replace)"
    _debug3 y64 "$y64"

    jwk='{"crv": "'$crv'", "kty": "EC", "x": "'$x64'", "y": "'$y64'"}'
    _debug3 jwk "$jwk"

    JWK_HEADER='{"alg": "ES256", "jwk": '$jwk'}'
    JWK_HEADERPLACE_PART1='{"nonce": "'
    JWK_HEADERPLACE_PART2='", "alg": "ES256", "jwk": '$jwk'}'
  else
    _err "Only RSA or EC key is supported."
    return 1
  fi

  _debug3 JWK_HEADER "$JWK_HEADER"
  __CACHED_JWK_KEY_FILE="$keyfile"
}

_time() {
  date -u "+%s"
}

_utc_date() {
  date -u "+%Y-%m-%d %H:%M:%S"
}

_mktemp() {
  if _exists mktemp; then
    if mktemp 2>/dev/null; then
      return 0
    elif _contains "$(mktemp 2>&1)" "-t prefix" && mktemp -t "$PROJECT_NAME" 2>/dev/null; then
      #for Mac osx
      return 0
    fi
  fi
  if [ -d "/tmp" ]; then
    echo "/tmp/${PROJECT_NAME}wefADf24sf.$(_time).tmp"
    return 0
  elif [ "$LE_TEMP_DIR" ] && mkdir -p "$LE_TEMP_DIR"; then
    echo "/$LE_TEMP_DIR/wefADf24sf.$(_time).tmp"
    return 0
  fi
  _err "Can not create temp file."
}

_inithttp() {

  if [ -z "$HTTP_HEADER" ] || ! touch "$HTTP_HEADER"; then
    HTTP_HEADER="$(_mktemp)"
    _debug2 HTTP_HEADER "$HTTP_HEADER"
  fi

  if [ "$__HTTP_INITIALIZED" ]; then
    if [ "$_ACME_CURL$_ACME_WGET" ]; then
      _debug2 "Http already initialized."
      return 0
    fi
  fi

  if [ -z "$_ACME_CURL" ] && _exists "curl"; then
    _ACME_CURL="curl -L --silent --dump-header $HTTP_HEADER "
    if [ "$DEBUG" ] && [ "$DEBUG" -ge "2" ]; then
      _CURL_DUMP="$(_mktemp)"
      _ACME_CURL="$_ACME_CURL --trace-ascii $_CURL_DUMP "
    fi

    if [ "$CA_PATH" ]; then
      _ACME_CURL="$_ACME_CURL --capath $CA_PATH "
    elif [ "$CA_BUNDLE" ]; then
      _ACME_CURL="$_ACME_CURL --cacert $CA_BUNDLE "
    fi

  fi

  if [ -z "$_ACME_WGET" ] && _exists "wget"; then
    _ACME_WGET="wget -q"
    if [ "$DEBUG" ] && [ "$DEBUG" -ge "2" ]; then
      _ACME_WGET="$_ACME_WGET -d "
    fi
    if [ "$CA_PATH" ]; then
      _ACME_WGET="$_ACME_WGET --ca-directory=$CA_PATH "
    elif [ "$CA_BUNDLE" ]; then
      _ACME_WGET="$_ACME_WGET --ca-certificate=$CA_BUNDLE "
    fi
  fi

  #from wget 1.14: do not skip body on 404 error
  if [ "$_ACME_WGET" ] && _contains "$($_ACME_WGET --help 2>&1)" "--content-on-error"; then
    _ACME_WGET="$_ACME_WGET --content-on-error "
  fi

  __HTTP_INITIALIZED=1

}

# body  url [needbase64] [POST|PUT]
_post() {
  body="$1"
  url="$2"
  needbase64="$3"
  httpmethod="$4"

  if [ -z "$httpmethod" ]; then
    httpmethod="POST"
  fi
  _debug $httpmethod
  _debug "url" "$url"
  _debug2 "body" "$body"

  _inithttp

  if [ "$_ACME_CURL" ] && [ "${ACME_USE_WGET:-0}" = "0" ]; then
    _CURL="$_ACME_CURL"
    if [ "$HTTPS_INSECURE" ]; then
      _CURL="$_CURL --insecure  "
    fi
    _debug "_CURL" "$_CURL"
    if [ "$needbase64" ]; then
      response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$url" | _base64)"
    else
      response="$($_CURL --user-agent "$USER_AGENT" -X $httpmethod -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" --data "$body" "$url")"
    fi
    _ret="$?"
    if [ "$_ret" != "0" ]; then
      _err "Please refer to https://curl.haxx.se/libcurl/c/libcurl-errors.html for error code: $_ret"
      if [ "$DEBUG" ] && [ "$DEBUG" -ge "2" ]; then
        _err "Here is the curl dump log:"
        _err "$(cat "$_CURL_DUMP")"
      fi
    fi
  elif [ "$_ACME_WGET" ]; then
    _WGET="$_ACME_WGET"
    if [ "$HTTPS_INSECURE" ]; then
      _WGET="$_WGET --no-check-certificate "
    fi
    _debug "_WGET" "$_WGET"
    if [ "$needbase64" ]; then
      if [ "$httpmethod" = "POST" ]; then
        response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --post-data="$body" "$url" 2>"$HTTP_HEADER" | _base64)"
      else
        response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --method $httpmethod --body-data="$body" "$url" 2>"$HTTP_HEADER" | _base64)"
      fi
    else
      if [ "$httpmethod" = "POST" ]; then
        response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --post-data="$body" "$url" 2>"$HTTP_HEADER")"
      else
        response="$($_WGET -S -O - --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" --method $httpmethod --body-data="$body" "$url" 2>"$HTTP_HEADER")"
      fi
    fi
    _ret="$?"
    if [ "$_ret" = "8" ]; then
      _ret=0
      _debug "wget returns 8, the server returns a 'Bad request' response, lets process the response later."
    fi
    if [ "$_ret" != "0" ]; then
      _err "Please refer to https://www.gnu.org/software/wget/manual/html_node/Exit-Status.html for error code: $_ret"
    fi
    _sed_i "s/^ *//g" "$HTTP_HEADER"
  else
    _ret="$?"
    _err "Neither curl nor wget is found, can not do $httpmethod."
  fi
  _debug "_ret" "$_ret"
  printf "%s" "$response"
  return $_ret
}

# url getheader timeout
_get() {
  _debug GET
  url="$1"
  onlyheader="$2"
  t="$3"
  _debug url "$url"
  _debug "timeout" "$t"

  _inithttp

  if [ "$_ACME_CURL" ] && [ "${ACME_USE_WGET:-0}" = "0" ]; then
    _CURL="$_ACME_CURL"
    if [ "$HTTPS_INSECURE" ]; then
      _CURL="$_CURL --insecure  "
    fi
    if [ "$t" ]; then
      _CURL="$_CURL --connect-timeout $t"
    fi
    _debug "_CURL" "$_CURL"
    if [ "$onlyheader" ]; then
      $_CURL -I --user-agent "$USER_AGENT" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" "$url"
    else
      $_CURL --user-agent "$USER_AGENT" -H "$_H1" -H "$_H2" -H "$_H3" -H "$_H4" -H "$_H5" "$url"
    fi
    ret=$?
    if [ "$ret" != "0" ]; then
      _err "Please refer to https://curl.haxx.se/libcurl/c/libcurl-errors.html for error code: $ret"
      if [ "$DEBUG" ] && [ "$DEBUG" -ge "2" ]; then
        _err "Here is the curl dump log:"
        _err "$(cat "$_CURL_DUMP")"
      fi
    fi
  elif [ "$_ACME_WGET" ]; then
    _WGET="$_ACME_WGET"
    if [ "$HTTPS_INSECURE" ]; then
      _WGET="$_WGET --no-check-certificate "
    fi
    if [ "$t" ]; then
      _WGET="$_WGET --timeout=$t"
    fi
    _debug "_WGET" "$_WGET"
    if [ "$onlyheader" ]; then
      $_WGET --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" -S -O /dev/null "$url" 2>&1 | sed 's/^[ ]*//g'
    else
      $_WGET --user-agent="$USER_AGENT" --header "$_H5" --header "$_H4" --header "$_H3" --header "$_H2" --header "$_H1" -O - "$url"
    fi
    ret=$?
    if [ "$ret" = "8" ]; then
      ret=0
      _debug "wget returns 8, the server returns a 'Bad request' response, lets process the response later."
    fi
    if [ "$ret" != "0" ]; then
      _err "Please refer to https://www.gnu.org/software/wget/manual/html_node/Exit-Status.html for error code: $ret"
    fi
  else
    ret=$?
    _err "Neither curl nor wget is found, can not do GET."
  fi
  _debug "ret" "$ret"
  return $ret
}

_head_n() {
  head -n "$1"
}

_tail_n() {
  if ! tail -n "$1" 2>/dev/null; then
    #fix for solaris
    tail -"$1"
  fi
}

# url  payload needbase64  keyfile
_send_signed_request() {
  url=$1
  payload=$2
  needbase64=$3
  keyfile=$4
  if [ -z "$keyfile" ]; then
    keyfile="$ACCOUNT_KEY_PATH"
  fi
  _debug url "$url"
  _debug payload "$payload"

  if ! _calcjwk "$keyfile"; then
    return 1
  fi

  payload64=$(printf "%s" "$payload" | _base64 | _url_replace)
  _debug3 payload64 "$payload64"

  MAX_REQUEST_RETRY_TIMES=5
  _request_retry_times=0
  while [ "${_request_retry_times}" -lt "$MAX_REQUEST_RETRY_TIMES" ]; do
    _debug3 _request_retry_times "$_request_retry_times"
    if [ -z "$_CACHED_NONCE" ]; then
      _headers=""
      if [ "$ACME_NEW_NONCE" ]; then
        _debug2 "Get nonce. ACME_NEW_NONCE" "$ACME_NEW_NONCE"
        nonceurl="$ACME_NEW_NONCE"
        if _post "" "$nonceurl" "" "HEAD"; then
          _headers="$(cat "$HTTP_HEADER")"
        fi
      fi
      if [ -z "$_headers" ]; then
        _debug2 "Get nonce. ACME_DIRECTORY" "$ACME_DIRECTORY"
        nonceurl="$ACME_DIRECTORY"
        _headers="$(_get "$nonceurl" "onlyheader")"
      fi

      if [ "$?" != "0" ]; then
        _err "Can not connect to $nonceurl to get nonce."
        return 1
      fi

      _debug2 _headers "$_headers"

      _CACHED_NONCE="$(echo "$_headers" | grep "Replay-Nonce:" | _head_n 1 | tr -d "\r\n " | cut -d ':' -f 2)"
      _debug2 _CACHED_NONCE "$_CACHED_NONCE"
    else
      _debug2 "Use _CACHED_NONCE" "$_CACHED_NONCE"
    fi
    nonce="$_CACHED_NONCE"
    _debug2 nonce "$nonce"

    protected="$JWK_HEADERPLACE_PART1$nonce\", \"url\": \"${url}$JWK_HEADERPLACE_PART2"
    _debug3 protected "$protected"

    protected64="$(printf "%s" "$protected" | _base64 | _url_replace)"
    _debug3 protected64 "$protected64"

    if ! _sig_t="$(printf "%s" "$protected64.$payload64" | _sign "$keyfile" "sha256")"; then
      _err "Sign request failed."
      return 1
    fi
    _debug3 _sig_t "$_sig_t"

    sig="$(printf "%s" "$_sig_t" | _url_replace)"
    _debug3 sig "$sig"

    body="{\"header\": $JWK_HEADER, \"protected\": \"$protected64\", \"payload\": \"$payload64\", \"signature\": \"$sig\"}"
    _debug3 body "$body"

    response="$(_post "$body" "$url" "$needbase64")"
    _CACHED_NONCE=""

    if [ "$?" != "0" ]; then
      _err "Can not post to $url"
      return 1
    fi
    _debug2 original "$response"
    response="$(echo "$response" | _normalizeJson)"

    responseHeaders="$(cat "$HTTP_HEADER")"

    _debug2 responseHeaders "$responseHeaders"
    _debug2 response "$response"
    code="$(grep "^HTTP" "$HTTP_HEADER" | _tail_n 1 | cut -d " " -f 2 | tr -d "\r\n")"
    _debug code "$code"

    _CACHED_NONCE="$(echo "$responseHeaders" | grep "Replay-Nonce:" | _head_n 1 | tr -d "\r\n " | cut -d ':' -f 2)"

    if _contains "$response" "JWS has invalid anti-replay nonce"; then
      _info "It seems the CA server is busy now, let's wait and retry."
      _request_retry_times=$(_math "$_request_retry_times" + 1)
      _sleep 5
      continue
    fi
    break
  done

}

#setopt "file"  "opt"  "="  "value" [";"]
_setopt() {
  __conf="$1"
  __opt="$2"
  __sep="$3"
  __val="$4"
  __end="$5"
  if [ -z "$__opt" ]; then
    _usage usage: _setopt '"file"  "opt"  "="  "value" [";"]'
    return
  fi
  if [ ! -f "$__conf" ]; then
    touch "$__conf"
  fi

  if grep -n "^$__opt$__sep" "$__conf" >/dev/null; then
    _debug3 OK
    if _contains "$__val" "&"; then
      __val="$(echo "$__val" | sed 's/&/\\&/g')"
    fi
    text="$(cat "$__conf")"
    printf -- "%s\n" "$text" | sed "s|^$__opt$__sep.*$|$__opt$__sep$__val$__end|" >"$__conf"

  elif grep -n "^#$__opt$__sep" "$__conf" >/dev/null; then
    if _contains "$__val" "&"; then
      __val="$(echo "$__val" | sed 's/&/\\&/g')"
    fi
    text="$(cat "$__conf")"
    printf -- "%s\n" "$text" | sed "s|^#$__opt$__sep.*$|$__opt$__sep$__val$__end|" >"$__conf"

  else
    _debug3 APP
    echo "$__opt$__sep$__val$__end" >>"$__conf"
  fi
  _debug3 "$(grep -n "^$__opt$__sep" "$__conf")"
}

#_save_conf  file key  value
#save to conf
_save_conf() {
  _s_c_f="$1"
  _sdkey="$2"
  _sdvalue="$3"
  if [ "$_s_c_f" ]; then
    _setopt "$_s_c_f" "$_sdkey" "=" "'$_sdvalue'"
  else
    _err "config file is empty, can not save $_sdkey=$_sdvalue"
  fi
}

#_clear_conf file  key
_clear_conf() {
  _c_c_f="$1"
  _sdkey="$2"
  if [ "$_c_c_f" ]; then
    _conf_data="$(cat "$_c_c_f")"
    echo "$_conf_data" | sed "s/^$_sdkey *=.*$//" >"$_c_c_f"
  else
    _err "config file is empty, can not clear"
  fi
}

#_read_conf file  key
_read_conf() {
  _r_c_f="$1"
  _sdkey="$2"
  if [ -f "$_r_c_f" ]; then
    (
      eval "$(grep "^$_sdkey *=" "$_r_c_f")"
      eval "printf \"%s\" \"\$$_sdkey\""
    )
  else
    _debug "config file is empty, can not read $_sdkey"
  fi
}

#_savedomainconf   key  value
#save to domain.conf
_savedomainconf() {
  _save_conf "$DOMAIN_CONF" "$1" "$2"
}

#_cleardomainconf   key
_cleardomainconf() {
  _clear_conf "$DOMAIN_CONF" "$1"
}

#_readdomainconf   key
_readdomainconf() {
  _read_conf "$DOMAIN_CONF" "$1"
}

#_saveaccountconf  key  value
_saveaccountconf() {
  _save_conf "$ACCOUNT_CONF_PATH" "$1" "$2"
}

#key  value
_saveaccountconf_mutable() {
  _save_conf "$ACCOUNT_CONF_PATH" "SAVED_$1" "$2"
  #remove later
  _clearaccountconf "$1"
}

#key
_readaccountconf() {
  _read_conf "$ACCOUNT_CONF_PATH" "$1"
}

#key
_readaccountconf_mutable() {
  _rac_key="$1"
  _readaccountconf "SAVED_$_rac_key"
}

#_clearaccountconf   key
_clearaccountconf() {
  _clear_conf "$ACCOUNT_CONF_PATH" "$1"
}

#_savecaconf  key  value
_savecaconf() {
  _save_conf "$CA_CONF" "$1" "$2"
}

#_readcaconf   key
_readcaconf() {
  _read_conf "$CA_CONF" "$1"
}

#_clearaccountconf   key
_clearcaconf() {
  _clear_conf "$CA_CONF" "$1"
}

# content localaddress
_startserver() {
  content="$1"
  ncaddr="$2"
  _debug "ncaddr" "$ncaddr"

  _debug "startserver: $$"
  nchelp="$(nc -h 2>&1)"

  _debug Le_HTTPPort "$Le_HTTPPort"
  _debug Le_Listen_V4 "$Le_Listen_V4"
  _debug Le_Listen_V6 "$Le_Listen_V6"
  _NC="nc"

  if [ "$Le_Listen_V4" ]; then
    _NC="$_NC -4"
  elif [ "$Le_Listen_V6" ]; then
    _NC="$_NC -6"
  fi

  if [ "$Le_Listen_V4$Le_Listen_V6$ncaddr" ]; then
    if ! _contains "$nchelp" "-4"; then
      _err "The nc doesn't support '-4', '-6' or local-address, please install 'netcat-openbsd' and try again."
      _err "See $(__green $_PREPARE_LINK)"
      return 1
    fi
  fi

  if echo "$nchelp" | grep "\-q[ ,]" >/dev/null; then
    _NC="$_NC -q 1 -l $ncaddr"
  else
    if echo "$nchelp" | grep "GNU netcat" >/dev/null && echo "$nchelp" | grep "\-c, \-\-close" >/dev/null; then
      _NC="$_NC -c -l $ncaddr"
    elif echo "$nchelp" | grep "\-N" | grep "Shutdown the network socket after EOF on stdin" >/dev/null; then
      _NC="$_NC -N -l $ncaddr"
    else
      _NC="$_NC -l $ncaddr"
    fi
  fi

  _debug "_NC" "$_NC"

  #for centos ncat
  if _contains "$nchelp" "nmap.org"; then
    _debug "Using ncat: nmap.org"
    if ! _exec "printf \"%s\r\n\r\n%s\" \"HTTP/1.1 200 OK\" \"$content\" | $_NC \"$Le_HTTPPort\" >&2"; then
      _exec_err
      return 1
    fi
    if [ "$DEBUG" ]; then
      _exec_err
    fi
    return
  fi

  #  while true ; do
  if ! _exec "printf \"%s\r\n\r\n%s\" \"HTTP/1.1 200 OK\" \"$content\" | $_NC -p \"$Le_HTTPPort\" >&2"; then
    _exec "printf \"%s\r\n\r\n%s\" \"HTTP/1.1 200 OK\" \"$content\" | $_NC \"$Le_HTTPPort\" >&2"
  fi

  if [ "$?" != "0" ]; then
    _err "nc listen error."
    _exec_err
    exit 1
  fi
  if [ "$DEBUG" ]; then
    _exec_err
  fi
  #  done
}

_stopserver() {
  pid="$1"
  _debug "pid" "$pid"
  if [ -z "$pid" ]; then
    return
  fi

  _debug2 "Le_HTTPPort" "$Le_HTTPPort"
  if [ "$Le_HTTPPort" ]; then
    if [ "$DEBUG" ] && [ "$DEBUG" -gt "3" ]; then
      _get "http://localhost:$Le_HTTPPort" "" 1
    else
      _get "http://localhost:$Le_HTTPPort" "" 1 >/dev/null 2>&1
    fi
  fi

  _debug2 "Le_TLSPort" "$Le_TLSPort"
  if [ "$Le_TLSPort" ]; then
    if [ "$DEBUG" ] && [ "$DEBUG" -gt "3" ]; then
      _get "https://localhost:$Le_TLSPort" "" 1
      _get "https://localhost:$Le_TLSPort" "" 1
    else
      _get "https://localhost:$Le_TLSPort" "" 1 >/dev/null 2>&1
      _get "https://localhost:$Le_TLSPort" "" 1 >/dev/null 2>&1
    fi
  fi
}

# sleep sec
_sleep() {
  _sleep_sec="$1"
  if [ "$__INTERACTIVE" ]; then
    _sleep_c="$_sleep_sec"
    while [ "$_sleep_c" -ge "0" ]; do
      printf "\r      \r"
      __green "$_sleep_c"
      _sleep_c="$(_math "$_sleep_c" - 1)"
      sleep 1
    done
    printf "\r"
  else
    sleep "$_sleep_sec"
  fi
}

# _starttlsserver  san_a  san_b port content _ncaddr
_starttlsserver() {
  _info "Starting tls server."
  san_a="$1"
  san_b="$2"
  port="$3"
  content="$4"
  opaddr="$5"

  _debug san_a "$san_a"
  _debug san_b "$san_b"
  _debug port "$port"

  #create key TLS_KEY
  if ! _createkey "2048" "$TLS_KEY"; then
    _err "Create tls validation key error."
    return 1
  fi

  #create csr
  alt="$san_a"
  if [ "$san_b" ]; then
    alt="$alt,$san_b"
  fi
  if ! _createcsr "tls.acme.sh" "$alt" "$TLS_KEY" "$TLS_CSR" "$TLS_CONF"; then
    _err "Create tls validation csr error."
    return 1
  fi

  #self signed
  if ! _signcsr "$TLS_KEY" "$TLS_CSR" "$TLS_CONF" "$TLS_CERT"; then
    _err "Create tls validation cert error."
    return 1
  fi

  __S_OPENSSL="${ACME_OPENSSL_BIN:-openssl} s_server -cert $TLS_CERT  -key $TLS_KEY "
  if [ "$opaddr" ]; then
    __S_OPENSSL="$__S_OPENSSL -accept $opaddr:$port"
  else
    __S_OPENSSL="$__S_OPENSSL -accept $port"
  fi

  _debug Le_Listen_V4 "$Le_Listen_V4"
  _debug Le_Listen_V6 "$Le_Listen_V6"
  if [ "$Le_Listen_V4" ]; then
    __S_OPENSSL="$__S_OPENSSL -4"
  elif [ "$Le_Listen_V6" ]; then
    __S_OPENSSL="$__S_OPENSSL -6"
  fi

  _debug "$__S_OPENSSL"
  if [ "$DEBUG" ] && [ "$DEBUG" -ge "2" ]; then
    (printf "%s\r\n\r\n%s" "HTTP/1.1 200 OK" "$content" | $__S_OPENSSL -tlsextdebug) &
  else
    (printf "%s\r\n\r\n%s" "HTTP/1.1 200 OK" "$content" | $__S_OPENSSL >/dev/null 2>&1) &
  fi

  serverproc="$!"
  sleep 1
  _debug serverproc "$serverproc"
}

#file
_readlink() {
  _rf="$1"
  if ! readlink -f "$_rf" 2>/dev/null; then
    if _startswith "$_rf" "/"; then
      echo "$_rf"
      return 0
    fi
    echo "$(pwd)/$_rf" | _conapath
  fi
}

_conapath() {
  sed "s#/\./#/#g"
}

__initHome() {
  if [ -z "$_SCRIPT_HOME" ]; then
    if _exists readlink && _exists dirname; then
      _debug "Lets find script dir."
      _debug "_SCRIPT_" "$_SCRIPT_"
      _script="$(_readlink "$_SCRIPT_")"
      _debug "_script" "$_script"
      _script_home="$(dirname "$_script")"
      _debug "_script_home" "$_script_home"
      if [ -d "$_script_home" ]; then
        _SCRIPT_HOME="$_script_home"
      else
        _err "It seems the script home is not correct:$_script_home"
      fi
    fi
  fi

  #  if [ -z "$LE_WORKING_DIR" ]; then
  #    if [ -f "$DEFAULT_INSTALL_HOME/account.conf" ]; then
  #      _debug "It seems that $PROJECT_NAME is already installed in $DEFAULT_INSTALL_HOME"
  #      LE_WORKING_DIR="$DEFAULT_INSTALL_HOME"
  #    else
  #      LE_WORKING_DIR="$_SCRIPT_HOME"
  #    fi
  #  fi

  if [ -z "$LE_WORKING_DIR" ]; then
    _debug "Using default home:$DEFAULT_INSTALL_HOME"
    LE_WORKING_DIR="$DEFAULT_INSTALL_HOME"
  fi
  export LE_WORKING_DIR

  if [ -z "$LE_CONFIG_HOME" ]; then
    LE_CONFIG_HOME="$LE_WORKING_DIR"
  fi
  _debug "Using config home:$LE_CONFIG_HOME"
  export LE_CONFIG_HOME

  _DEFAULT_ACCOUNT_CONF_PATH="$LE_CONFIG_HOME/account.conf"

  if [ -z "$ACCOUNT_CONF_PATH" ]; then
    if [ -f "$_DEFAULT_ACCOUNT_CONF_PATH" ]; then
      . "$_DEFAULT_ACCOUNT_CONF_PATH"
    fi
  fi

  if [ -z "$ACCOUNT_CONF_PATH" ]; then
    ACCOUNT_CONF_PATH="$_DEFAULT_ACCOUNT_CONF_PATH"
  fi

  DEFAULT_LOG_FILE="$LE_CONFIG_HOME/$PROJECT_NAME.log"

  DEFAULT_CA_HOME="$LE_CONFIG_HOME/ca"

  if [ -z "$LE_TEMP_DIR" ]; then
    LE_TEMP_DIR="$LE_CONFIG_HOME/tmp"
  fi
}

#server
_initAPI() {
  _api_server="${1:-$ACME_DIRECTORY}"
  _debug "_init api for server: $_api_server"

  if [ "$_api_server" = "$DEFAULT_CA" ]; then
    #just for performance, hardcode the default entry points
    export ACME_KEY_CHANGE="https://acme-v01.api.letsencrypt.org/acme/key-change"
    export ACME_NEW_AUTHZ="https://acme-v01.api.letsencrypt.org/acme/new-authz"
    export ACME_NEW_ORDER="https://acme-v01.api.letsencrypt.org/acme/new-cert"
    export ACME_NEW_ACCOUNT="https://acme-v01.api.letsencrypt.org/acme/new-reg"
    export ACME_REVOKE_CERT="https://acme-v01.api.letsencrypt.org/acme/revoke-cert"
  fi

  if [ -z "$ACME_NEW_ACCOUNT" ]; then
    response=$(_get "$_api_server")
    if [ "$?" != "0" ]; then
      _debug2 "response" "$response"
      _err "Can not init api."
      return 1
    fi
    _debug2 "response" "$response"

    ACME_KEY_CHANGE=$(echo "$response" | _egrep_o 'key-change" *: *"[^"]*"' | cut -d '"' -f 3)
    export ACME_KEY_CHANGE

    ACME_NEW_AUTHZ=$(echo "$response" | _egrep_o 'new-authz" *: *"[^"]*"' | cut -d '"' -f 3)
    export ACME_NEW_AUTHZ

    ACME_NEW_ORDER=$(echo "$response" | _egrep_o 'new-cert" *: *"[^"]*"' | cut -d '"' -f 3)
    if [ -z "$ACME_NEW_ORDER" ]; then
      ACME_NEW_ORDER=$(echo "$response" | _egrep_o 'new-order" *: *"[^"]*"' | cut -d '"' -f 3)
    fi
    export ACME_NEW_ORDER

    ACME_NEW_ACCOUNT=$(echo "$response" | _egrep_o 'new-reg" *: *"[^"]*"' | cut -d '"' -f 3)
    if [ -z "$ACME_NEW_ACCOUNT" ]; then
      ACME_NEW_ACCOUNT=$(echo "$response" | _egrep_o 'new-account" *: *"[^"]*"' | cut -d '"' -f 3)
    fi
    export ACME_NEW_ACCOUNT

    ACME_REVOKE_CERT=$(echo "$response" | _egrep_o 'revoke-cert" *: *"[^"]*"' | cut -d '"' -f 3)
    export ACME_REVOKE_CERT

    ACME_NEW_NONCE=$(echo "$response" | _egrep_o 'new-nonce" *: *"[^"]*"' | cut -d '"' -f 3)
    export ACME_NEW_NONCE

  fi

  _debug "ACME_KEY_CHANGE" "$ACME_KEY_CHANGE"
  _debug "ACME_NEW_AUTHZ" "$ACME_NEW_AUTHZ"
  _debug "ACME_NEW_ORDER" "$ACME_NEW_ORDER"
  _debug "ACME_NEW_ACCOUNT" "$ACME_NEW_ACCOUNT"
  _debug "ACME_REVOKE_CERT" "$ACME_REVOKE_CERT"
}

#[domain]  [keylength]
_initpath() {

  __initHome

  if [ -f "$ACCOUNT_CONF_PATH" ]; then
    . "$ACCOUNT_CONF_PATH"
  fi

  if [ "$IN_CRON" ]; then
    if [ ! "$_USER_PATH_EXPORTED" ]; then
      _USER_PATH_EXPORTED=1
      export PATH="$USER_PATH:$PATH"
    fi
  fi

  if [ -z "$CA_HOME" ]; then
    CA_HOME="$DEFAULT_CA_HOME"
  fi

  if [ -z "$ACME_DIRECTORY" ]; then
    if [ -z "$STAGE" ]; then
      ACME_DIRECTORY="$DEFAULT_CA"
    else
      ACME_DIRECTORY="$STAGE_CA"
      _info "Using stage ACME_DIRECTORY: $ACME_DIRECTORY"
    fi
  fi

  _ACME_SERVER_HOST="$(echo "$ACME_DIRECTORY" | cut -d : -f 2 | tr -s / | cut -d / -f 2)"
  _debug2 "_ACME_SERVER_HOST" "$_ACME_SERVER_HOST"

  CA_DIR="$CA_HOME/$_ACME_SERVER_HOST"

  _DEFAULT_CA_CONF="$CA_DIR/ca.conf"

  if [ -z "$CA_CONF" ]; then
    CA_CONF="$_DEFAULT_CA_CONF"
  fi
  _debug3 CA_CONF "$CA_CONF"

  if [ -f "$CA_CONF" ]; then
    . "$CA_CONF"
  fi

  if [ -z "$ACME_DIR" ]; then
    ACME_DIR="/home/.acme"
  fi

  if [ -z "$APACHE_CONF_BACKUP_DIR" ]; then
    APACHE_CONF_BACKUP_DIR="$LE_CONFIG_HOME"
  fi

  if [ -z "$USER_AGENT" ]; then
    USER_AGENT="$DEFAULT_USER_AGENT"
  fi

  if [ -z "$HTTP_HEADER" ]; then
    HTTP_HEADER="$LE_CONFIG_HOME/http.header"
  fi

  _OLD_ACCOUNT_KEY="$LE_WORKING_DIR/account.key"
  _OLD_ACCOUNT_JSON="$LE_WORKING_DIR/account.json"

  _DEFAULT_ACCOUNT_KEY_PATH="$CA_DIR/account.key"
  _DEFAULT_ACCOUNT_JSON_PATH="$CA_DIR/account.json"
  if [ -z "$ACCOUNT_KEY_PATH" ]; then
    ACCOUNT_KEY_PATH="$_DEFAULT_ACCOUNT_KEY_PATH"
  fi

  if [ -z "$ACCOUNT_JSON_PATH" ]; then
    ACCOUNT_JSON_PATH="$_DEFAULT_ACCOUNT_JSON_PATH"
  fi

  _DEFAULT_CERT_HOME="$LE_CONFIG_HOME"
  if [ -z "$CERT_HOME" ]; then
    CERT_HOME="$_DEFAULT_CERT_HOME"
  fi

  if [ -z "$ACME_OPENSSL_BIN" ] || [ ! -f "$ACME_OPENSSL_BIN" ] || [ ! -x "$ACME_OPENSSL_BIN" ]; then
    ACME_OPENSSL_BIN="$DEFAULT_OPENSSL_BIN"
  fi

  if [ -z "$1" ]; then
    return 0
  fi

  domain="$1"
  _ilength="$2"

  if [ -z "$DOMAIN_PATH" ]; then
    domainhome="$CERT_HOME/$domain"
    domainhomeecc="$CERT_HOME/$domain$ECC_SUFFIX"

    DOMAIN_PATH="$domainhome"

    if _isEccKey "$_ilength"; then
      DOMAIN_PATH="$domainhomeecc"
    else
      if [ ! -d "$domainhome" ] && [ -d "$domainhomeecc" ]; then
        _info "The domain '$domain' seems to have a ECC cert already, please add '$(__red "--ecc")' parameter if you want to use that cert."
      fi
    fi
    _debug DOMAIN_PATH "$DOMAIN_PATH"
  fi

  if [ -z "$DOMAIN_BACKUP_PATH" ]; then
    DOMAIN_BACKUP_PATH="$DOMAIN_PATH/backup"
  fi

  if [ -z "$DOMAIN_CONF" ]; then
    DOMAIN_CONF="$DOMAIN_PATH/$domain.conf"
  fi

  if [ -z "$DOMAIN_SSL_CONF" ]; then
    DOMAIN_SSL_CONF="$DOMAIN_PATH/$domain.csr.conf"
  fi

  if [ -z "$CSR_PATH" ]; then
    CSR_PATH="$DOMAIN_PATH/$domain.csr"
  fi
  if [ -z "$CERT_KEY_PATH" ]; then
    CERT_KEY_PATH="$DOMAIN_PATH/$domain.key"
  fi
  if [ -z "$CERT_PATH" ]; then
    CERT_PATH="$DOMAIN_PATH/$domain.cer"
  fi
  if [ -z "$CA_CERT_PATH" ]; then
    CA_CERT_PATH="$DOMAIN_PATH/ca.cer"
  fi
  if [ -z "$CERT_FULLCHAIN_PATH" ]; then
    CERT_FULLCHAIN_PATH="$DOMAIN_PATH/fullchain.cer"
  fi
  if [ -z "$CERT_PFX_PATH" ]; then
    CERT_PFX_PATH="$DOMAIN_PATH/$domain.pfx"
  fi
  if [ -z "$CERT_PKCS8_PATH" ]; then
    CERT_PKCS8_PATH="$DOMAIN_PATH/$domain.pkcs8"
  fi

  if [ -z "$TLS_CONF" ]; then
    TLS_CONF="$DOMAIN_PATH/tls.validation.conf"
  fi
  if [ -z "$TLS_CERT" ]; then
    TLS_CERT="$DOMAIN_PATH/tls.validation.cert"
  fi
  if [ -z "$TLS_KEY" ]; then
    TLS_KEY="$DOMAIN_PATH/tls.validation.key"
  fi
  if [ -z "$TLS_CSR" ]; then
    TLS_CSR="$DOMAIN_PATH/tls.validation.csr"
  fi

}

_exec() {
  if [ -z "$_EXEC_TEMP_ERR" ]; then
    _EXEC_TEMP_ERR="$(_mktemp)"
  fi

  if [ "$_EXEC_TEMP_ERR" ]; then
    eval "$@ 2>>$_EXEC_TEMP_ERR"
  else
    eval "$@"
  fi
}

_exec_err() {
  [ "$_EXEC_TEMP_ERR" ] && _err "$(cat "$_EXEC_TEMP_ERR")" && echo "" >"$_EXEC_TEMP_ERR"
}

_apachePath() {
  _APACHECTL="apachectl"
  if ! _exists apachectl; then
    if _exists apache2ctl; then
      _APACHECTL="apache2ctl"
    else
      _err "'apachectl not found. It seems that apache is not installed, or you are not root user.'"
      _err "Please use webroot mode to try again."
      return 1
    fi
  fi

  if ! _exec $_APACHECTL -V >/dev/null; then
    _exec_err
    return 1
  fi

  if [ "$APACHE_HTTPD_CONF" ]; then
    _saveaccountconf APACHE_HTTPD_CONF "$APACHE_HTTPD_CONF"
    httpdconf="$APACHE_HTTPD_CONF"
    httpdconfname="$(basename "$httpdconfname")"
  else
    httpdconfname="$($_APACHECTL -V | grep SERVER_CONFIG_FILE= | cut -d = -f 2 | tr -d '"')"
    _debug httpdconfname "$httpdconfname"

    if [ -z "$httpdconfname" ]; then
      _err "Can not read apache config file."
      return 1
    fi

    if _startswith "$httpdconfname" '/'; then
      httpdconf="$httpdconfname"
      httpdconfname="$(basename "$httpdconfname")"
    else
      httpdroot="$($_APACHECTL -V | grep HTTPD_ROOT= | cut -d = -f 2 | tr -d '"')"
      _debug httpdroot "$httpdroot"
      httpdconf="$httpdroot/$httpdconfname"
      httpdconfname="$(basename "$httpdconfname")"
    fi
  fi
  _debug httpdconf "$httpdconf"
  _debug httpdconfname "$httpdconfname"
  if [ ! -f "$httpdconf" ]; then
    _err "Apache Config file not found" "$httpdconf"
    return 1
  fi
  return 0
}

_restoreApache() {
  if [ -z "$usingApache" ]; then
    return 0
  fi
  _initpath
  if ! _apachePath; then
    return 1
  fi

  if [ ! -f "$APACHE_CONF_BACKUP_DIR/$httpdconfname" ]; then
    _debug "No config file to restore."
    return 0
  fi

  cat "$APACHE_CONF_BACKUP_DIR/$httpdconfname" >"$httpdconf"
  _debug "Restored: $httpdconf."
  if ! _exec $_APACHECTL -t; then
    _exec_err
    _err "Sorry, restore apache config error, please contact me."
    return 1
  fi
  _debug "Restored successfully."
  rm -f "$APACHE_CONF_BACKUP_DIR/$httpdconfname"
  return 0
}

_setApache() {
  _initpath
  if ! _apachePath; then
    return 1
  fi

  #test the conf first
  _info "Checking if there is an error in the apache config file before starting."

  if ! _exec "$_APACHECTL" -t >/dev/null; then
    _exec_err
    _err "The apache config file has error, please fix it first, then try again."
    _err "Don't worry, there is nothing changed to your system."
    return 1
  else
    _info "OK"
  fi

  #backup the conf
  _debug "Backup apache config file" "$httpdconf"
  if ! cp "$httpdconf" "$APACHE_CONF_BACKUP_DIR/"; then
    _err "Can not backup apache config file, so abort. Don't worry, the apache config is not changed."
    _err "This might be a bug of $PROJECT_NAME , please report issue: $PROJECT"
    return 1
  fi
  _info "JFYI, Config file $httpdconf is backuped to $APACHE_CONF_BACKUP_DIR/$httpdconfname"
  _info "In case there is an error that can not be restored automatically, you may try restore it yourself."
  _info "The backup file will be deleted on success, just forget it."

  #add alias

  apacheVer="$($_APACHECTL -V | grep "Server version:" | cut -d : -f 2 | cut -d " " -f 2 | cut -d '/' -f 2)"
  _debug "apacheVer" "$apacheVer"
  apacheMajer="$(echo "$apacheVer" | cut -d . -f 1)"
  apacheMinor="$(echo "$apacheVer" | cut -d . -f 2)"

  if [ "$apacheVer" ] && [ "$apacheMajer$apacheMinor" -ge "24" ]; then
    echo "
Alias /.well-known/acme-challenge  $ACME_DIR

<Directory $ACME_DIR >
Require all granted
</Directory>
  " >>"$httpdconf"
  else
    echo "
Alias /.well-known/acme-challenge  $ACME_DIR

<Directory $ACME_DIR >
Order allow,deny
Allow from all
</Directory>
  " >>"$httpdconf"
  fi

  _msg="$($_APACHECTL -t 2>&1)"
  if [ "$?" != "0" ]; then
    _err "Sorry, apache config error"
    if _restoreApache; then
      _err "The apache config file is restored."
    else
      _err "Sorry, The apache config file can not be restored, please report bug."
    fi
    return 1
  fi

  if [ ! -d "$ACME_DIR" ]; then
    mkdir -p "$ACME_DIR"
    chmod 755 "$ACME_DIR"
  fi

  if ! _exec "$_APACHECTL" graceful; then
    _exec_err
    _err "$_APACHECTL  graceful error, please contact me."
    _restoreApache
    return 1
  fi
  usingApache="1"
  return 0
}

#find the real nginx conf file
#backup
#set the nginx conf
#returns the real nginx conf file
_setNginx() {
  _d="$1"
  _croot="$2"
  _thumbpt="$3"
  if ! _exists "nginx"; then
    _err "nginx command is not found."
    return 1
  fi
  FOUND_REAL_NGINX_CONF=""
  FOUND_REAL_NGINX_CONF_LN=""
  BACKUP_NGINX_CONF=""
  _debug _croot "$_croot"
  _start_f="$(echo "$_croot" | cut -d : -f 2)"
  _debug _start_f "$_start_f"
  if [ -z "$_start_f" ]; then
    _debug "find start conf from nginx command"
    if [ -z "$NGINX_CONF" ]; then
      NGINX_CONF="$(nginx -V 2>&1 | _egrep_o "--conf-path=[^ ]* " | tr -d " ")"
      _debug NGINX_CONF "$NGINX_CONF"
      NGINX_CONF="$(echo "$NGINX_CONF" | cut -d = -f 2)"
      _debug NGINX_CONF "$NGINX_CONF"
      if [ ! -f "$NGINX_CONF" ]; then
        _err "'$NGINX_CONF' doesn't exist."
        NGINX_CONF=""
        return 1
      fi
      _debug "Found nginx conf file:$NGINX_CONF"
    fi
    _start_f="$NGINX_CONF"
  fi
  _debug "Start detect nginx conf for $_d from:$_start_f"
  if ! _checkConf "$_d" "$_start_f"; then
    _err "Can not find conf file for domain $d"
    return 1
  fi
  _info "Found conf file: $FOUND_REAL_NGINX_CONF"

  _ln=$FOUND_REAL_NGINX_CONF_LN
  _debug "_ln" "$_ln"

  _lnn=$(_math $_ln + 1)
  _debug _lnn "$_lnn"
  _start_tag="$(sed -n "$_lnn,${_lnn}p" "$FOUND_REAL_NGINX_CONF")"
  _debug "_start_tag" "$_start_tag"
  if [ "$_start_tag" = "$NGINX_START" ]; then
    _info "The domain $_d is already configured, skip"
    FOUND_REAL_NGINX_CONF=""
    return 0
  fi

  mkdir -p "$DOMAIN_BACKUP_PATH"
  _backup_conf="$DOMAIN_BACKUP_PATH/$_d.nginx.conf"
  _debug _backup_conf "$_backup_conf"
  BACKUP_NGINX_CONF="$_backup_conf"
  _info "Backup $FOUND_REAL_NGINX_CONF to $_backup_conf"
  if ! cp "$FOUND_REAL_NGINX_CONF" "$_backup_conf"; then
    _err "backup error."
    FOUND_REAL_NGINX_CONF=""
    return 1
  fi

  _info "Check the nginx conf before setting up."
  if ! _exec "nginx -t" >/dev/null; then
    _exec_err
    return 1
  fi

  _info "OK, Set up nginx config file"

  if ! sed -n "1,${_ln}p" "$_backup_conf" >"$FOUND_REAL_NGINX_CONF"; then
    cat "$_backup_conf" >"$FOUND_REAL_NGINX_CONF"
    _err "write nginx conf error, but don't worry, the file is restored to the original version."
    return 1
  fi

  echo "$NGINX_START
location ~ \"^/\.well-known/acme-challenge/([-_a-zA-Z0-9]+)\$\" {
  default_type text/plain;
  return 200 \"\$1.$_thumbpt\";
}
#NGINX_START
" >>"$FOUND_REAL_NGINX_CONF"

  if ! sed -n "${_lnn},99999p" "$_backup_conf" >>"$FOUND_REAL_NGINX_CONF"; then
    cat "$_backup_conf" >"$FOUND_REAL_NGINX_CONF"
    _err "write nginx conf error, but don't worry, the file is restored."
    return 1
  fi
  _debug3 "Modified config:$(cat $FOUND_REAL_NGINX_CONF)"
  _info "nginx conf is done, let's check it again."
  if ! _exec "nginx -t" >/dev/null; then
    _exec_err
    _err "It seems that nginx conf was broken, let's restore."
    cat "$_backup_conf" >"$FOUND_REAL_NGINX_CONF"
    return 1
  fi

  _info "Reload nginx"
  if ! _exec "nginx -s reload" >/dev/null; then
    _exec_err
    _err "It seems that nginx reload error, let's restore."
    cat "$_backup_conf" >"$FOUND_REAL_NGINX_CONF"
    return 1
  fi

  return 0
}

#d , conf
_checkConf() {
  _d="$1"
  _c_file="$2"
  _debug "Start _checkConf from:$_c_file"
  if [ ! -f "$2" ] && ! echo "$2" | grep '*$' >/dev/null && echo "$2" | grep '*' >/dev/null; then
    _debug "wildcard"
    for _w_f in $2; do
      if [ -f "$_w_f" ] && _checkConf "$1" "$_w_f"; then
        return 0
      fi
    done
    #not found
    return 1
  elif [ -f "$2" ]; then
    _debug "single"
    if _isRealNginxConf "$1" "$2"; then
      _debug "$2 is found."
      FOUND_REAL_NGINX_CONF="$2"
      return 0
    fi
    if cat "$2" | tr "\t" " " | grep "^ *include *.*;" >/dev/null; then
      _debug "Try include files"
      for included in $(cat "$2" | tr "\t" " " | grep "^ *include *.*;" | sed "s/include //" | tr -d " ;"); do
        _debug "check included $included"
        if _checkConf "$1" "$included"; then
          return 0
        fi
      done
    fi
    return 1
  else
    _debug "$2 not found."
    return 1
  fi
  return 1
}

#d , conf
_isRealNginxConf() {
  _debug "_isRealNginxConf $1 $2"
  if [ -f "$2" ]; then
    for _fln in $(tr "\t" ' ' <"$2" | grep -n "^ *server_name.* $1" | cut -d : -f 1); do
      _debug _fln "$_fln"
      if [ "$_fln" ]; then
        _start=$(tr "\t" ' ' <"$2" | _head_n "$_fln" | grep -n "^ *server *{" | _tail_n 1)
        _debug "_start" "$_start"
        _start_n=$(echo "$_start" | cut -d : -f 1)
        _start_nn=$(_math $_start_n + 1)
        _debug "_start_n" "$_start_n"
        _debug "_start_nn" "$_start_nn"

        _left="$(sed -n "${_start_nn},99999p" "$2")"
        _debug2 _left "$_left"
        if echo "$_left" | tr "\t" ' ' | grep -n "^ *server *{" >/dev/null; then
          _end=$(echo "$_left" | tr "\t" ' ' | grep -n "^ *server *{" | _head_n 1)
          _debug "_end" "$_end"
          _end_n=$(echo "$_end" | cut -d : -f 1)
          _debug "_end_n" "$_end_n"
          _seg_n=$(echo "$_left" | sed -n "1,${_end_n}p")
        else
          _seg_n="$_left"
        fi

        _debug "_seg_n" "$_seg_n"

        if [ "$(echo "$_seg_n" | _egrep_o "^ *ssl  *on *;")" ] \
          || [ "$(echo "$_seg_n" | _egrep_o "listen .* ssl[ |;]")" ]; then
          _debug "ssl on, skip"
        else
          FOUND_REAL_NGINX_CONF_LN=$_fln
          _debug3 "found FOUND_REAL_NGINX_CONF_LN" "$FOUND_REAL_NGINX_CONF_LN"
          return 0
        fi
      fi
    done
  fi
  return 1
}

#restore all the nginx conf
_restoreNginx() {
  if [ -z "$NGINX_RESTORE_VLIST" ]; then
    _debug "No need to restore nginx, skip."
    return
  fi
  _debug "_restoreNginx"
  _debug "NGINX_RESTORE_VLIST" "$NGINX_RESTORE_VLIST"

  for ng_entry in $(echo "$NGINX_RESTORE_VLIST" | tr "$dvsep" ' '); do
    _debug "ng_entry" "$ng_entry"
    _nd=$(echo "$ng_entry" | cut -d "$sep" -f 1)
    _ngconf=$(echo "$ng_entry" | cut -d "$sep" -f 2)
    _ngbackupconf=$(echo "$ng_entry" | cut -d "$sep" -f 3)
    _info "Restoring from $_ngbackupconf to $_ngconf"
    cat "$_ngbackupconf" >"$_ngconf"
  done

  _info "Reload nginx"
  if ! _exec "nginx -s reload" >/dev/null; then
    _exec_err
    _err "It seems that nginx reload error, please report bug."
    return 1
  fi
  return 0
}

_clearup() {
  _stopserver "$serverproc"
  serverproc=""
  _restoreApache
  _restoreNginx
  _clearupdns
  if [ -z "$DEBUG" ]; then
    rm -f "$TLS_CONF"
    rm -f "$TLS_CERT"
    rm -f "$TLS_KEY"
    rm -f "$TLS_CSR"
  fi
}

_clearupdns() {
  _debug "_clearupdns"
  if [ "$dnsadded" != 1 ] || [ -z "$vlist" ]; then
    _debug "skip dns."
    return
  fi

  ventries=$(echo "$vlist" | tr ',' ' ')
  for ventry in $ventries; do
    d=$(echo "$ventry" | cut -d "$sep" -f 1)
    keyauthorization=$(echo "$ventry" | cut -d "$sep" -f 2)
    vtype=$(echo "$ventry" | cut -d "$sep" -f 4)
    _currentRoot=$(echo "$ventry" | cut -d "$sep" -f 5)
    txt="$(printf "%s" "$keyauthorization" | _digest "sha256" | _url_replace)"
    _debug txt "$txt"
    if [ "$keyauthorization" = "$STATE_VERIFIED" ]; then
      _debug "$d is already verified, skip $vtype."
      continue
    fi

    if [ "$vtype" != "$VTYPE_DNS" ]; then
      _info "Skip $d for $vtype"
      continue
    fi

    d_api="$(_findHook "$d" dnsapi "$_currentRoot")"
    _debug d_api "$d_api"

    if [ -z "$d_api" ]; then
      _info "Not Found domain api file: $d_api"
      continue
    fi

    (
      if ! . "$d_api"; then
        _err "Load file $d_api error. Please check your api file and try again."
        return 1
      fi

      rmcommand="${_currentRoot}_rm"
      if ! _exists "$rmcommand"; then
        _err "It seems that your api file doesn't define $rmcommand"
        return 1
      fi

      txtdomain="_acme-challenge.$d"

      if ! $rmcommand "$txtdomain" "$txt"; then
        _err "Error removing txt for domain:$txtdomain"
        return 1
      fi
    )

  done
}

# webroot  removelevel tokenfile
_clearupwebbroot() {
  __webroot="$1"
  if [ -z "$__webroot" ]; then
    _debug "no webroot specified, skip"
    return 0
  fi

  _rmpath=""
  if [ "$2" = '1' ]; then
    _rmpath="$__webroot/.well-known"
  elif [ "$2" = '2' ]; then
    _rmpath="$__webroot/.well-known/acme-challenge"
  elif [ "$2" = '3' ]; then
    _rmpath="$__webroot/.well-known/acme-challenge/$3"
  else
    _debug "Skip for removelevel:$2"
  fi

  if [ "$_rmpath" ]; then
    if [ "$DEBUG" ]; then
      _debug "Debugging, skip removing: $_rmpath"
    else
      rm -rf "$_rmpath"
    fi
  fi

  return 0

}

_on_before_issue() {
  _chk_web_roots="$1"
  _chk_main_domain="$2"
  _chk_alt_domains="$3"
  _chk_pre_hook="$4"
  _chk_local_addr="$5"
  _debug _on_before_issue
  #run pre hook
  if [ "$_chk_pre_hook" ]; then
    _info "Run pre hook:'$_chk_pre_hook'"
    if ! (
      cd "$DOMAIN_PATH" && eval "$_chk_pre_hook"
    ); then
      _err "Error when run pre hook."
      return 1
    fi
  fi

  if _hasfield "$_chk_web_roots" "$NO_VALUE"; then
    if ! _exists "nc"; then
      _err "Please install netcat(nc) tools first."
      return 1
    fi
  fi

  _debug Le_LocalAddress "$_chk_local_addr"

  alldomains=$(echo "$_chk_main_domain,$_chk_alt_domains" | tr ',' ' ')
  _index=1
  _currentRoot=""
  _addrIndex=1
  for d in $alldomains; do
    _debug "Check for domain" "$d"
    _currentRoot="$(_getfield "$_chk_web_roots" $_index)"
    _debug "_currentRoot" "$_currentRoot"
    _index=$(_math $_index + 1)
    _checkport=""
    if [ "$_currentRoot" = "$NO_VALUE" ]; then
      _info "Standalone mode."
      if [ -z "$Le_HTTPPort" ]; then
        Le_HTTPPort=80
      else
        _savedomainconf "Le_HTTPPort" "$Le_HTTPPort"
      fi
      _checkport="$Le_HTTPPort"
    elif [ "$_currentRoot" = "$W_TLS" ]; then
      _info "Standalone tls mode."
      if [ -z "$Le_TLSPort" ]; then
        Le_TLSPort=443
      else
        _savedomainconf "Le_TLSPort" "$Le_TLSPort"
      fi
      _checkport="$Le_TLSPort"
    fi

    if [ "$_checkport" ]; then
      _debug _checkport "$_checkport"
      _checkaddr="$(_getfield "$_chk_local_addr" $_addrIndex)"
      _debug _checkaddr "$_checkaddr"

      _addrIndex="$(_math $_addrIndex + 1)"

      _netprc="$(_ss "$_checkport" | grep "$_checkport")"
      netprc="$(echo "$_netprc" | grep "$_checkaddr")"
      if [ -z "$netprc" ]; then
        netprc="$(echo "$_netprc" | grep "$LOCAL_ANY_ADDRESS")"
      fi
      if [ "$netprc" ]; then
        _err "$netprc"
        _err "tcp port $_checkport is already used by $(echo "$netprc" | cut -d : -f 4)"
        _err "Please stop it first"
        return 1
      fi
    fi
  done

  if _hasfield "$_chk_web_roots" "apache"; then
    if ! _setApache; then
      _err "set up apache error. Report error to me."
      return 1
    fi
  else
    usingApache=""
  fi

}

_on_issue_err() {
  _chk_post_hook="$1"
  _chk_vlist="$2"
  _debug _on_issue_err
  if [ "$LOG_FILE" ]; then
    _err "Please check log file for more details: $LOG_FILE"
  else
    _err "Please add '--debug' or '--log' to check more details."
    _err "See: $_DEBUG_WIKI"
  fi

  #run the post hook
  if [ "$_chk_post_hook" ]; then
    _info "Run post hook:'$_chk_post_hook'"
    if ! (
      cd "$DOMAIN_PATH" && eval "$_chk_post_hook"
    ); then
      _err "Error when run post hook."
      return 1
    fi
  fi

  #trigger the validation to flush the pending authz
  if [ "$_chk_vlist" ]; then
    (
      _debug2 "_chk_vlist" "$_chk_vlist"
      _debug2 "start to deactivate authz"
      ventries=$(echo "$_chk_vlist" | tr "$dvsep" ' ')
      for ventry in $ventries; do
        d=$(echo "$ventry" | cut -d "$sep" -f 1)
        keyauthorization=$(echo "$ventry" | cut -d "$sep" -f 2)
        uri=$(echo "$ventry" | cut -d "$sep" -f 3)
        vtype=$(echo "$ventry" | cut -d "$sep" -f 4)
        _currentRoot=$(echo "$ventry" | cut -d "$sep" -f 5)
        __trigger_validation "$uri" "$keyauthorization"
      done
    )
  fi

  if [ "$DEBUG" ] && [ "$DEBUG" -gt "0" ]; then
    _debug "$(_dlg_versions)"
  fi

}

_on_issue_success() {
  _chk_post_hook="$1"
  _chk_renew_hook="$2"
  _debug _on_issue_success
  #run the post hook
  if [ "$_chk_post_hook" ]; then
    _info "Run post hook:'$_chk_post_hook'"
    if ! (
      cd "$DOMAIN_PATH" && eval "$_chk_post_hook"
    ); then
      _err "Error when run post hook."
      return 1
    fi
  fi

  #run renew hook
  if [ "$IS_RENEW" ] && [ "$_chk_renew_hook" ]; then
    _info "Run renew hook:'$_chk_renew_hook'"
    if ! (
      cd "$DOMAIN_PATH" && eval "$_chk_renew_hook"
    ); then
      _err "Error when run renew hook."
      return 1
    fi
  fi

}

updateaccount() {
  _initpath
  _regAccount
}

registeraccount() {
  _reg_length="$1"
  _initpath
  _regAccount "$_reg_length"
}

__calcAccountKeyHash() {
  [ -f "$ACCOUNT_KEY_PATH" ] && _digest sha256 <"$ACCOUNT_KEY_PATH"
}

__calc_account_thumbprint() {
  printf "%s" "$jwk" | tr -d ' ' | _digest "sha256" | _url_replace
}

#keylength
_regAccount() {
  _initpath
  _reg_length="$1"

  if [ ! -f "$ACCOUNT_KEY_PATH" ] && [ -f "$_OLD_ACCOUNT_KEY" ]; then
    mkdir -p "$CA_DIR"
    _info "mv $_OLD_ACCOUNT_KEY to $ACCOUNT_KEY_PATH"
    mv "$_OLD_ACCOUNT_KEY" "$ACCOUNT_KEY_PATH"
  fi

  if [ ! -f "$ACCOUNT_JSON_PATH" ] && [ -f "$_OLD_ACCOUNT_JSON" ]; then
    mkdir -p "$CA_DIR"
    _info "mv $_OLD_ACCOUNT_JSON to $ACCOUNT_JSON_PATH"
    mv "$_OLD_ACCOUNT_JSON" "$ACCOUNT_JSON_PATH"
  fi

  if [ ! -f "$ACCOUNT_KEY_PATH" ]; then
    if ! _create_account_key "$_reg_length"; then
      _err "Create account key error."
      return 1
    fi
  fi

  if ! _calcjwk "$ACCOUNT_KEY_PATH"; then
    return 1
  fi
  _initAPI
  _updateTos=""
  _reg_res="new-reg"
  while true; do
    _debug AGREEMENT "$AGREEMENT"

    regjson='{"resource": "'$_reg_res'", "agreement": "'$AGREEMENT'"}'

    if [ "$ACCOUNT_EMAIL" ]; then
      regjson='{"resource": "'$_reg_res'", "contact": ["mailto: '$ACCOUNT_EMAIL'"], "agreement": "'$AGREEMENT'"}'
    fi

    if [ -z "$_updateTos" ]; then
      _info "Registering account"

      if ! _send_signed_request "${ACME_NEW_ACCOUNT}" "$regjson"; then
        _err "Register account Error: $response"
        return 1
      fi

      if [ "$code" = "" ] || [ "$code" = '201' ]; then
        echo "$response" >"$ACCOUNT_JSON_PATH"
        _info "Registered"
      elif [ "$code" = '409' ]; then
        _info "Already registered"
      else
        _err "Register account Error: $response"
        return 1
      fi

      _accUri="$(echo "$responseHeaders" | grep "^Location:" | _head_n 1 | cut -d ' ' -f 2 | tr -d "\r\n")"
      _debug "_accUri" "$_accUri"

      _tos="$(echo "$responseHeaders" | grep "^Link:.*rel=\"terms-of-service\"" | _head_n 1 | _egrep_o "<.*>" | tr -d '<>')"
      _debug "_tos" "$_tos"
      if [ -z "$_tos" ]; then
        _debug "Use default tos: $DEFAULT_AGREEMENT"
        _tos="$DEFAULT_AGREEMENT"
      fi
      if [ "$_tos" != "$AGREEMENT" ]; then
        _updateTos=1
        AGREEMENT="$_tos"
        _reg_res="reg"
        continue
      fi

    else
      _debug "Update tos: $_tos"
      if ! _send_signed_request "$_accUri" "$regjson"; then
        _err "Update tos error."
        return 1
      fi
      if [ "$code" = '202' ]; then
        _info "Update success."

        CA_KEY_HASH="$(__calcAccountKeyHash)"
        _debug "Calc CA_KEY_HASH" "$CA_KEY_HASH"
        _savecaconf CA_KEY_HASH "$CA_KEY_HASH"
      else
        _err "Update account error."
        return 1
      fi
    fi
    ACCOUNT_THUMBPRINT="$(__calc_account_thumbprint)"
    _info "ACCOUNT_THUMBPRINT" "$ACCOUNT_THUMBPRINT"
    return 0
  done

}

# domain folder  file
_findHook() {
  _hookdomain="$1"
  _hookcat="$2"
  _hookname="$3"

  if [ -f "$_SCRIPT_HOME/$_hookcat/$_hookname" ]; then
    d_api="$_SCRIPT_HOME/$_hookcat/$_hookname"
  elif [ -f "$_SCRIPT_HOME/$_hookcat/$_hookname.sh" ]; then
    d_api="$_SCRIPT_HOME/$_hookcat/$_hookname.sh"
  elif [ -f "$LE_WORKING_DIR/$_hookdomain/$_hookname" ]; then
    d_api="$LE_WORKING_DIR/$_hookdomain/$_hookname"
  elif [ -f "$LE_WORKING_DIR/$_hookdomain/$_hookname.sh" ]; then
    d_api="$LE_WORKING_DIR/$_hookdomain/$_hookname.sh"
  elif [ -f "$LE_WORKING_DIR/$_hookname" ]; then
    d_api="$LE_WORKING_DIR/$_hookname"
  elif [ -f "$LE_WORKING_DIR/$_hookname.sh" ]; then
    d_api="$LE_WORKING_DIR/$_hookname.sh"
  elif [ -f "$LE_WORKING_DIR/$_hookcat/$_hookname" ]; then
    d_api="$LE_WORKING_DIR/$_hookcat/$_hookname"
  elif [ -f "$LE_WORKING_DIR/$_hookcat/$_hookname.sh" ]; then
    d_api="$LE_WORKING_DIR/$_hookcat/$_hookname.sh"
  fi

  printf "%s" "$d_api"
}

#domain
__get_domain_new_authz() {
  _gdnd="$1"
  _info "Getting new-authz for domain" "$_gdnd"
  _initAPI
  _Max_new_authz_retry_times=5
  _authz_i=0
  while [ "$_authz_i" -lt "$_Max_new_authz_retry_times" ]; do
    _debug "Try new-authz for the $_authz_i time."
    if ! _send_signed_request "${ACME_NEW_AUTHZ}" "{\"resource\": \"new-authz\", \"identifier\": {\"type\": \"dns\", \"value\": \"$(_idn "$_gdnd")\"}}"; then
      _err "Can not get domain new authz."
      return 1
    fi
    if _contains "$response" "No registration exists matching provided key"; then
      _err "It seems there is an error, but it's recovered now, please try again."
      _err "If you see this message for a second time, please report bug: $(__green "$PROJECT")"
      _clearcaconf "CA_KEY_HASH"
      break
    fi
    if ! _contains "$response" "An error occurred while processing your request"; then
      _info "The new-authz request is ok."
      break
    fi
    _authz_i="$(_math "$_authz_i" + 1)"
    _info "The server is busy, Sleep $_authz_i to retry."
    _sleep "$_authz_i"
  done

  if [ "$_authz_i" = "$_Max_new_authz_retry_times" ]; then
    _err "new-authz retry reach the max $_Max_new_authz_retry_times times."
  fi

  if [ ! -z "$code" ] && [ ! "$code" = '201' ]; then
    _err "new-authz error: $response"
    return 1
  fi

}

#uri keyAuthorization
__trigger_validation() {
  _debug2 "tigger domain validation."
  _t_url="$1"
  _debug2 _t_url "$_t_url"
  _t_key_authz="$2"
  _debug2 _t_key_authz "$_t_key_authz"
  _send_signed_request "$_t_url" "{\"resource\": \"challenge\", \"keyAuthorization\": \"$_t_key_authz\"}"
}

#webroot, domain domainlist  keylength
issue() {
  if [ -z "$2" ]; then
    _usage "Usage: $PROJECT_ENTRY --issue  -d  a.com  -w /path/to/webroot/a.com/ "
    return 1
  fi
  if [ -z "$1" ]; then
    _usage "Please specify at least one validation method: '--webroot', '--standalone', '--apache', '--nginx' or '--dns' etc."
    return 1
  fi
  _web_roots="$1"
  _main_domain="$2"
  _alt_domains="$3"
  if _contains "$_main_domain" ","; then
    _main_domain=$(echo "$2,$3" | cut -d , -f 1)
    _alt_domains=$(echo "$2,$3" | cut -d , -f 2- | sed "s/,${NO_VALUE}$//")
  fi
  _key_length="$4"
  _real_cert="$5"
  _real_key="$6"
  _real_ca="$7"
  _reload_cmd="$8"
  _real_fullchain="$9"
  _pre_hook="${10}"
  _post_hook="${11}"
  _renew_hook="${12}"
  _local_addr="${13}"

  #remove these later.
  if [ "$_web_roots" = "dns-cf" ]; then
    _web_roots="dns_cf"
  fi
  if [ "$_web_roots" = "dns-dp" ]; then
    _web_roots="dns_dp"
  fi
  if [ "$_web_roots" = "dns-cx" ]; then
    _web_roots="dns_cx"
  fi

  if [ ! "$IS_RENEW" ]; then
    _initpath "$_main_domain" "$_key_length"
    mkdir -p "$DOMAIN_PATH"
  fi

  _debug "Using ACME_DIRECTORY: $ACME_DIRECTORY"

  _initAPI

  if [ -f "$DOMAIN_CONF" ]; then
    Le_NextRenewTime=$(_readdomainconf Le_NextRenewTime)
    _debug Le_NextRenewTime "$Le_NextRenewTime"
    if [ -z "$FORCE" ] && [ "$Le_NextRenewTime" ] && [ "$(_time)" -lt "$Le_NextRenewTime" ]; then
      _saved_domain=$(_readdomainconf Le_Domain)
      _debug _saved_domain "$_saved_domain"
      _saved_alt=$(_readdomainconf Le_Alt)
      _debug _saved_alt "$_saved_alt"
      if [ "$_saved_domain,$_saved_alt" = "$_main_domain,$_alt_domains" ]; then
        _info "Domains not changed."
        _info "Skip, Next renewal time is: $(__green "$(_readdomainconf Le_NextRenewTimeStr)")"
        _info "Add '$(__red '--force')' to force to renew."
        return $RENEW_SKIP
      else
        _info "Domains have changed."
      fi
    fi
  fi

  _savedomainconf "Le_Domain" "$_main_domain"
  _savedomainconf "Le_Alt" "$_alt_domains"
  _savedomainconf "Le_Webroot" "$_web_roots"

  _savedomainconf "Le_PreHook" "$_pre_hook"
  _savedomainconf "Le_PostHook" "$_post_hook"
  _savedomainconf "Le_RenewHook" "$_renew_hook"

  if [ "$_local_addr" ]; then
    _savedomainconf "Le_LocalAddress" "$_local_addr"
  else
    _cleardomainconf "Le_LocalAddress"
  fi

  Le_API="$ACME_DIRECTORY"
  _savedomainconf "Le_API" "$Le_API"

  if [ "$_alt_domains" = "$NO_VALUE" ]; then
    _alt_domains=""
  fi

  if [ "$_key_length" = "$NO_VALUE" ]; then
    _key_length=""
  fi

  if ! _on_before_issue "$_web_roots" "$_main_domain" "$_alt_domains" "$_pre_hook" "$_local_addr"; then
    _err "_on_before_issue."
    return 1
  fi

  _saved_account_key_hash="$(_readcaconf "CA_KEY_HASH")"
  _debug2 _saved_account_key_hash "$_saved_account_key_hash"

  if [ -z "$_saved_account_key_hash" ] || [ "$_saved_account_key_hash" != "$(__calcAccountKeyHash)" ]; then
    if ! _regAccount "$_accountkeylength"; then
      _on_issue_err "$_post_hook"
      return 1
    fi
  else
    _debug "_saved_account_key_hash is not changed, skip register account."
  fi

  if [ -f "$CSR_PATH" ] && [ ! -f "$CERT_KEY_PATH" ]; then
    _info "Signing from existing CSR."
  else
    _key=$(_readdomainconf Le_Keylength)
    _debug "Read key length:$_key"
    if [ ! -f "$CERT_KEY_PATH" ] || [ "$_key_length" != "$_key" ]; then
      if ! createDomainKey "$_main_domain" "$_key_length"; then
        _err "Create domain key error."
        _clearup
        _on_issue_err "$_post_hook"
        return 1
      fi
    fi

    if ! _createcsr "$_main_domain" "$_alt_domains" "$CERT_KEY_PATH" "$CSR_PATH" "$DOMAIN_SSL_CONF"; then
      _err "Create CSR error."
      _clearup
      _on_issue_err "$_post_hook"
      return 1
    fi
  fi

  _savedomainconf "Le_Keylength" "$_key_length"

  vlist="$Le_Vlist"

  _info "Getting domain auth token for each domain"
  sep='#'
  dvsep=','
  if [ -z "$vlist" ]; then
    alldomains=$(echo "$_main_domain,$_alt_domains" | tr ',' ' ')
    _index=1
    _currentRoot=""
    for d in $alldomains; do
      _info "Getting webroot for domain" "$d"
      _w="$(echo $_web_roots | cut -d , -f $_index)"
      _debug _w "$_w"
      if [ "$_w" ]; then
        _currentRoot="$_w"
      fi
      _debug "_currentRoot" "$_currentRoot"
      _index=$(_math $_index + 1)

      vtype="$VTYPE_HTTP"
      if _startswith "$_currentRoot" "dns"; then
        vtype="$VTYPE_DNS"
      fi

      if [ "$_currentRoot" = "$W_TLS" ]; then
        vtype="$VTYPE_TLS"
      fi

      if ! __get_domain_new_authz "$d"; then
        _clearup
        _on_issue_err "$_post_hook"
        return 1
      fi

      if [ -z "$thumbprint" ]; then
        thumbprint="$(__calc_account_thumbprint)"
      fi

      entry="$(printf "%s\n" "$response" | _egrep_o '[^\{]*"type":"'$vtype'"[^\}]*')"
      _debug entry "$entry"
      if [ -z "$entry" ]; then
        _err "Error, can not get domain token $d"
        _clearup
        _on_issue_err "$_post_hook"
        return 1
      fi
      token="$(printf "%s\n" "$entry" | _egrep_o '"token":"[^"]*' | cut -d : -f 2 | tr -d '"')"
      _debug token "$token"

      uri="$(printf "%s\n" "$entry" | _egrep_o '"uri":"[^"]*' | cut -d : -f 2,3 | tr -d '"')"
      _debug uri "$uri"

      keyauthorization="$token.$thumbprint"
      _debug keyauthorization "$keyauthorization"

      if printf "%s" "$response" | grep '"status":"valid"' >/dev/null 2>&1; then
        _debug "$d is already verified, skip."
        keyauthorization="$STATE_VERIFIED"
        _debug keyauthorization "$keyauthorization"
      fi

      dvlist="$d$sep$keyauthorization$sep$uri$sep$vtype$sep$_currentRoot"
      _debug dvlist "$dvlist"

      vlist="$vlist$dvlist$dvsep"

    done
    _debug vlist "$vlist"
    #add entry
    dnsadded=""
    ventries=$(echo "$vlist" | tr "$dvsep" ' ')
    for ventry in $ventries; do
      d=$(echo "$ventry" | cut -d "$sep" -f 1)
      keyauthorization=$(echo "$ventry" | cut -d "$sep" -f 2)
      vtype=$(echo "$ventry" | cut -d "$sep" -f 4)
      _currentRoot=$(echo "$ventry" | cut -d "$sep" -f 5)

      if [ "$keyauthorization" = "$STATE_VERIFIED" ]; then
        _debug "$d is already verified, skip $vtype."
        continue
      fi

      if [ "$vtype" = "$VTYPE_DNS" ]; then
        dnsadded='0'
        txtdomain="_acme-challenge.$d"
        _debug txtdomain "$txtdomain"
        txt="$(printf "%s" "$keyauthorization" | _digest "sha256" | _url_replace)"
        _debug txt "$txt"

        d_api="$(_findHook "$d" dnsapi "$_currentRoot")"

        _debug d_api "$d_api"

        if [ "$d_api" ]; then
          _info "Found domain api file: $d_api"
        else
          _err "Add the following TXT record:"
          _err "Domain: '$(__green "$txtdomain")'"
          _err "TXT value: '$(__green "$txt")'"
          _err "Please be aware that you prepend _acme-challenge. before your domain"
          _err "so the resulting subdomain will be: $txtdomain"
          continue
        fi

        (
          if ! . "$d_api"; then
            _err "Load file $d_api error. Please check your api file and try again."
            return 1
          fi

          addcommand="${_currentRoot}_add"
          if ! _exists "$addcommand"; then
            _err "It seems that your api file is not correct, it must have a function named: $addcommand"
            return 1
          fi

          if ! $addcommand "$txtdomain" "$txt"; then
            _err "Error add txt for domain:$txtdomain"
            return 1
          fi
        )

        if [ "$?" != "0" ]; then
          _clearup
          _on_issue_err "$_post_hook"
          return 1
        fi
        dnsadded='1'
      fi
    done

    if [ "$dnsadded" = '0' ]; then
      _savedomainconf "Le_Vlist" "$vlist"
      _debug "Dns record not added yet, so, save to $DOMAIN_CONF and exit."
      _err "Please add the TXT records to the domains, and retry again."
      _clearup
      _on_issue_err "$_post_hook"
      return 1
    fi

  fi

  if [ "$dnsadded" = '1' ]; then
    if [ -z "$Le_DNSSleep" ]; then
      Le_DNSSleep="$DEFAULT_DNS_SLEEP"
    else
      _savedomainconf "Le_DNSSleep" "$Le_DNSSleep"
    fi

    _info "Sleep $(__green $Le_DNSSleep) seconds for the txt records to take effect"
    _sleep "$Le_DNSSleep"
  fi

  NGINX_RESTORE_VLIST=""
  _debug "ok, let's start to verify"

  _ncIndex=1
  ventries=$(echo "$vlist" | tr "$dvsep" ' ')
  for ventry in $ventries; do
    d=$(echo "$ventry" | cut -d "$sep" -f 1)
    keyauthorization=$(echo "$ventry" | cut -d "$sep" -f 2)
    uri=$(echo "$ventry" | cut -d "$sep" -f 3)
    vtype=$(echo "$ventry" | cut -d "$sep" -f 4)
    _currentRoot=$(echo "$ventry" | cut -d "$sep" -f 5)

    if [ "$keyauthorization" = "$STATE_VERIFIED" ]; then
      _info "$d is already verified, skip $vtype."
      continue
    fi

    _info "Verifying:$d"
    _debug "d" "$d"
    _debug "keyauthorization" "$keyauthorization"
    _debug "uri" "$uri"
    removelevel=""
    token="$(printf "%s" "$keyauthorization" | cut -d '.' -f 1)"

    _debug "_currentRoot" "$_currentRoot"

    if [ "$vtype" = "$VTYPE_HTTP" ]; then
      if [ "$_currentRoot" = "$NO_VALUE" ]; then
        _info "Standalone mode server"
        _ncaddr="$(_getfield "$_local_addr" "$_ncIndex")"
        _ncIndex="$(_math $_ncIndex + 1)"
        _startserver "$keyauthorization" "$_ncaddr" &
        if [ "$?" != "0" ]; then
          _clearup
          _on_issue_err "$_post_hook" "$vlist"
          return 1
        fi
        serverproc="$!"
        sleep 1
        _debug serverproc "$serverproc"
      elif [ "$_currentRoot" = "$MODE_STATELESS" ]; then
        _info "Stateless mode for domain:$d"
        _sleep 1
      elif _startswith "$_currentRoot" "$NGINX"; then
        _info "Nginx mode for domain:$d"
        #set up nginx server
        FOUND_REAL_NGINX_CONF=""
        BACKUP_NGINX_CONF=""
        if ! _setNginx "$d" "$_currentRoot" "$thumbprint"; then
          _clearup
          _on_issue_err "$_post_hook" "$vlist"
          return 1
        fi

        if [ "$FOUND_REAL_NGINX_CONF" ]; then
          _realConf="$FOUND_REAL_NGINX_CONF"
          _backup="$BACKUP_NGINX_CONF"
          _debug _realConf "$_realConf"
          NGINX_RESTORE_VLIST="$d$sep$_realConf$sep$_backup$dvsep$NGINX_RESTORE_VLIST"
        fi
        _sleep 1
      else
        if [ "$_currentRoot" = "apache" ]; then
          wellknown_path="$ACME_DIR"
        else
          wellknown_path="$_currentRoot/.well-known/acme-challenge"
          if [ ! -d "$_currentRoot/.well-known" ]; then
            removelevel='1'
          elif [ ! -d "$_currentRoot/.well-known/acme-challenge" ]; then
            removelevel='2'
          else
            removelevel='3'
          fi
        fi

        _debug wellknown_path "$wellknown_path"

        _debug "writing token:$token to $wellknown_path/$token"

        mkdir -p "$wellknown_path"

        if ! printf "%s" "$keyauthorization" >"$wellknown_path/$token"; then
          _err "$d:Can not write token to file : $wellknown_path/$token"
          _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
          _clearup
          _on_issue_err "$_post_hook" "$vlist"
          return 1
        fi

        if [ ! "$usingApache" ]; then
          if webroot_owner=$(_stat "$_currentRoot"); then
            _debug "Changing owner/group of .well-known to $webroot_owner"
            if ! _exec "chown -R \"$webroot_owner\" \"$_currentRoot/.well-known\""; then
              _debug "$(cat "$_EXEC_TEMP_ERR")"
              _exec_err >/dev/null 2>&1
            fi
          else
            _debug "not changing owner/group of webroot"
          fi
        fi

      fi

    elif [ "$vtype" = "$VTYPE_TLS" ]; then
      #create A
      #_hash_A="$(printf "%s" $token | _digest "sha256" "hex" )"
      #_debug2 _hash_A "$_hash_A"
      #_x="$(echo $_hash_A | cut -c 1-32)"
      #_debug2 _x "$_x"
      #_y="$(echo $_hash_A | cut -c 33-64)"
      #_debug2 _y "$_y"
      #_SAN_A="$_x.$_y.token.acme.invalid"
      #_debug2 _SAN_A "$_SAN_A"

      #create B
      _hash_B="$(printf "%s" "$keyauthorization" | _digest "sha256" "hex")"
      _debug2 _hash_B "$_hash_B"
      _x="$(echo "$_hash_B" | cut -c 1-32)"
      _debug2 _x "$_x"
      _y="$(echo "$_hash_B" | cut -c 33-64)"
      _debug2 _y "$_y"

      #_SAN_B="$_x.$_y.ka.acme.invalid"

      _SAN_B="$_x.$_y.acme.invalid"
      _debug2 _SAN_B "$_SAN_B"

      _ncaddr="$(_getfield "$_local_addr" "$_ncIndex")"
      _ncIndex="$(_math "$_ncIndex" + 1)"
      if ! _starttlsserver "$_SAN_B" "$_SAN_A" "$Le_TLSPort" "$keyauthorization" "$_ncaddr"; then
        _err "Start tls server error."
        _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
        _clearup
        _on_issue_err "$_post_hook" "$vlist"
        return 1
      fi
    fi

    if ! __trigger_validation "$uri" "$keyauthorization"; then
      _err "$d:Can not get challenge: $response"
      _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
      _clearup
      _on_issue_err "$_post_hook" "$vlist"
      return 1
    fi

    if [ ! -z "$code" ] && [ ! "$code" = '202' ]; then
      _err "$d:Challenge error: $response"
      _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
      _clearup
      _on_issue_err "$_post_hook" "$vlist"
      return 1
    fi

    waittimes=0
    if [ -z "$MAX_RETRY_TIMES" ]; then
      MAX_RETRY_TIMES=30
    fi

    while true; do
      waittimes=$(_math "$waittimes" + 1)
      if [ "$waittimes" -ge "$MAX_RETRY_TIMES" ]; then
        _err "$d:Timeout"
        _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
        _clearup
        _on_issue_err "$_post_hook" "$vlist"
        return 1
      fi

      _debug "sleep 2 secs to verify"
      sleep 2
      _debug "checking"
      response="$(_get "$uri")"
      if [ "$?" != "0" ]; then
        _err "$d:Verify error:$response"
        _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
        _clearup
        _on_issue_err "$_post_hook" "$vlist"
        return 1
      fi
      _debug2 original "$response"

      response="$(echo "$response" | _normalizeJson)"
      _debug2 response "$response"

      status=$(echo "$response" | _egrep_o '"status":"[^"]*' | cut -d : -f 2 | tr -d '"')
      if [ "$status" = "valid" ]; then
        _info "$(__green Success)"
        _stopserver "$serverproc"
        serverproc=""
        _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
        break
      fi

      if [ "$status" = "invalid" ]; then
        error="$(echo "$response" | tr -d "\r\n" | _egrep_o '"error":\{[^\}]*')"
        _debug2 error "$error"
        errordetail="$(echo "$error" | _egrep_o '"detail": *"[^"]*' | cut -d '"' -f 4)"
        _debug2 errordetail "$errordetail"
        if [ "$errordetail" ]; then
          _err "$d:Verify error:$errordetail"
        else
          _err "$d:Verify error:$error"
        fi
        if [ "$DEBUG" ]; then
          if [ "$vtype" = "$VTYPE_HTTP" ]; then
            _debug "Debug: get token url."
            _get "http://$d/.well-known/acme-challenge/$token" "" 1
          fi
        fi
        _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
        _clearup
        _on_issue_err "$_post_hook" "$vlist"
        return 1
      fi

      if [ "$status" = "pending" ]; then
        _info "Pending"
      else
        _err "$d:Verify error:$response"
        _clearupwebbroot "$_currentRoot" "$removelevel" "$token"
        _clearup
        _on_issue_err "$_post_hook" "$vlist"
        return 1
      fi

    done

  done

  _clearup
  _info "Verify finished, start to sign."
  der="$(_getfile "${CSR_PATH}" "${BEGIN_CSR}" "${END_CSR}" | tr -d "\r\n" | _url_replace)"

  if ! _send_signed_request "${ACME_NEW_ORDER}" "{\"resource\": \"new-cert\", \"csr\": \"$der\"}" "needbase64"; then
    _err "Sign failed."
    _on_issue_err "$_post_hook"
    return 1
  fi

  _rcert="$response"
  Le_LinkCert="$(grep -i '^Location.*$' "$HTTP_HEADER" | _head_n 1 | tr -d "\r\n" | cut -d " " -f 2)"
  _debug "Le_LinkCert" "$Le_LinkCert"
  _savedomainconf "Le_LinkCert" "$Le_LinkCert"

  if [ "$Le_LinkCert" ]; then
    echo "$BEGIN_CERT" >"$CERT_PATH"

    #if ! _get "$Le_LinkCert" | _base64 "multiline"  >> "$CERT_PATH" ; then
    #  _debug "Get cert failed. Let's try last response."
    #  printf -- "%s" "$_rcert" | _dbase64 "multiline" | _base64 "multiline" >> "$CERT_PATH"
    #fi

    if ! printf -- "%s" "$_rcert" | _dbase64 "multiline" | _base64 "multiline" >>"$CERT_PATH"; then
      _debug "Try cert link."
      _get "$Le_LinkCert" | _base64 "multiline" >>"$CERT_PATH"
    fi

    echo "$END_CERT" >>"$CERT_PATH"
    _info "$(__green "Cert success.")"
    cat "$CERT_PATH"

    _info "Your cert is in $(__green " $CERT_PATH ")"

    if [ -f "$CERT_KEY_PATH" ]; then
      _info "Your cert key is in $(__green " $CERT_KEY_PATH ")"
    fi

    cp "$CERT_PATH" "$CERT_FULLCHAIN_PATH"

    if [ ! "$USER_PATH" ] || [ ! "$IN_CRON" ]; then
      USER_PATH="$PATH"
      _saveaccountconf "USER_PATH" "$USER_PATH"
    fi
  fi

  if [ -z "$Le_LinkCert" ]; then
    response="$(echo "$response" | _dbase64 "multiline" | _normalizeJson)"
    _err "Sign failed: $(echo "$response" | _egrep_o '"detail":"[^"]*"')"
    _on_issue_err "$_post_hook"
    return 1
  fi

  _cleardomainconf "Le_Vlist"

  Le_LinkIssuer=$(grep -i '^Link' "$HTTP_HEADER" | _head_n 1 | cut -d " " -f 2 | cut -d ';' -f 1 | tr -d '<>')
  if ! _contains "$Le_LinkIssuer" ":"; then
    _info "$(__red "Relative issuer link found.")"
    Le_LinkIssuer="$_ACME_SERVER_HOST$Le_LinkIssuer"
  fi
  _debug Le_LinkIssuer "$Le_LinkIssuer"
  _savedomainconf "Le_LinkIssuer" "$Le_LinkIssuer"

  if [ "$Le_LinkIssuer" ]; then
    _link_issuer_retry=0
    _MAX_ISSUER_RETRY=5
    while [ "$_link_issuer_retry" -lt "$_MAX_ISSUER_RETRY" ]; do
      _debug _link_issuer_retry "$_link_issuer_retry"
      if _get "$Le_LinkIssuer" >"$CA_CERT_PATH.der"; then
        echo "$BEGIN_CERT" >"$CA_CERT_PATH"
        _base64 "multiline" <"$CA_CERT_PATH.der" >>"$CA_CERT_PATH"
        echo "$END_CERT" >>"$CA_CERT_PATH"

        _info "The intermediate CA cert is in $(__green " $CA_CERT_PATH ")"
        cat "$CA_CERT_PATH" >>"$CERT_FULLCHAIN_PATH"
        _info "And the full chain certs is there: $(__green " $CERT_FULLCHAIN_PATH ")"

        rm -f "$CA_CERT_PATH.der"
        break
      fi
      _link_issuer_retry=$(_math $_link_issuer_retry + 1)
      _sleep "$_link_issuer_retry"
    done
    if [ "$_link_issuer_retry" = "$_MAX_ISSUER_RETRY" ]; then
      _err "Max retry for issuer ca cert is reached."
    fi
  else
    _debug "No Le_LinkIssuer header found."
  fi

  Le_CertCreateTime=$(_time)
  _savedomainconf "Le_CertCreateTime" "$Le_CertCreateTime"

  Le_CertCreateTimeStr=$(date -u)
  _savedomainconf "Le_CertCreateTimeStr" "$Le_CertCreateTimeStr"

  if [ -z "$Le_RenewalDays" ] || [ "$Le_RenewalDays" -lt "0" ] || [ "$Le_RenewalDays" -gt "$MAX_RENEW" ]; then
    Le_RenewalDays="$MAX_RENEW"
  else
    _savedomainconf "Le_RenewalDays" "$Le_RenewalDays"
  fi

  if [ "$CA_BUNDLE" ]; then
    _saveaccountconf CA_BUNDLE "$CA_BUNDLE"
  else
    _clearaccountconf "CA_BUNDLE"
  fi

  if [ "$CA_PATH" ]; then
    _saveaccountconf CA_PATH "$CA_PATH"
  else
    _clearaccountconf "CA_PATH"
  fi

  if [ "$HTTPS_INSECURE" ]; then
    _saveaccountconf HTTPS_INSECURE "$HTTPS_INSECURE"
  else
    _clearaccountconf "HTTPS_INSECURE"
  fi

  if [ "$Le_Listen_V4" ]; then
    _savedomainconf "Le_Listen_V4" "$Le_Listen_V4"
    _cleardomainconf Le_Listen_V6
  elif [ "$Le_Listen_V6" ]; then
    _savedomainconf "Le_Listen_V6" "$Le_Listen_V6"
    _cleardomainconf Le_Listen_V4
  fi

  Le_NextRenewTime=$(_math "$Le_CertCreateTime" + "$Le_RenewalDays" \* 24 \* 60 \* 60)

  Le_NextRenewTimeStr=$(_time2str "$Le_NextRenewTime")
  _savedomainconf "Le_NextRenewTimeStr" "$Le_NextRenewTimeStr"

  Le_NextRenewTime=$(_math "$Le_NextRenewTime" - 86400)
  _savedomainconf "Le_NextRenewTime" "$Le_NextRenewTime"

  _on_issue_success "$_post_hook" "$_renew_hook"

  if [ "$_real_cert$_real_key$_real_ca$_reload_cmd$_real_fullchain" ]; then
    _savedomainconf "Le_RealCertPath" "$_real_cert"
    _savedomainconf "Le_RealCACertPath" "$_real_ca"
    _savedomainconf "Le_RealKeyPath" "$_real_key"
    _savedomainconf "Le_ReloadCmd" "$_reload_cmd"
    _savedomainconf "Le_RealFullChainPath" "$_real_fullchain"
    _installcert "$_main_domain" "$_real_cert" "$_real_key" "$_real_ca" "$_real_fullchain" "$_reload_cmd"
  fi

}

#domain  [isEcc]
renew() {
  Le_Domain="$1"
  if [ -z "$Le_Domain" ]; then
    _usage "Usage: $PROJECT_ENTRY --renew  -d domain.com [--ecc]"
    return 1
  fi

  _isEcc="$2"

  _initpath "$Le_Domain" "$_isEcc"

  _info "$(__green "Renew: '$Le_Domain'")"
  if [ ! -f "$DOMAIN_CONF" ]; then
    _info "'$Le_Domain' is not a issued domain, skip."
    return 0
  fi

  if [ "$Le_RenewalDays" ]; then
    _savedomainconf Le_RenewalDays "$Le_RenewalDays"
  fi

  . "$DOMAIN_CONF"

  if [ "$Le_API" ]; then
    if [ "$_OLD_CA_HOST" = "$Le_API" ]; then
      export Le_API="$DEFAULT_CA"
      _savedomainconf Le_API "$Le_API"
    fi
    if [ "$_OLD_STAGE_CA_HOST" = "$Le_API" ]; then
      export Le_API="$STAGE_CA"
      _savedomainconf Le_API "$Le_API"
    fi
    export ACME_DIRECTORY="$Le_API"
    #reload ca configs
    ACCOUNT_KEY_PATH=""
    ACCOUNT_JSON_PATH=""
    CA_CONF=""
    _debug3 "initpath again."
    _initpath "$Le_Domain" "$_isEcc"
  fi

  if [ -z "$FORCE" ] && [ "$Le_NextRenewTime" ] && [ "$(_time)" -lt "$Le_NextRenewTime" ]; then
    _info "Skip, Next renewal time is: $(__green "$Le_NextRenewTimeStr")"
    _info "Add '$(__red '--force')' to force to renew."
    return "$RENEW_SKIP"
  fi

  IS_RENEW="1"
  issue "$Le_Webroot" "$Le_Domain" "$Le_Alt" "$Le_Keylength" "$Le_RealCertPath" "$Le_RealKeyPath" "$Le_RealCACertPath" "$Le_ReloadCmd" "$Le_RealFullChainPath" "$Le_PreHook" "$Le_PostHook" "$Le_RenewHook" "$Le_LocalAddress"
  res="$?"
  if [ "$res" != "0" ]; then
    return "$res"
  fi

  if [ "$Le_DeployHook" ]; then
    _deploy "$Le_Domain" "$Le_DeployHook"
    res="$?"
  fi

  IS_RENEW=""

  return "$res"
}

#renewAll  [stopRenewOnError]
renewAll() {
  _initpath
  _stopRenewOnError="$1"
  _debug "_stopRenewOnError" "$_stopRenewOnError"
  _ret="0"

  for di in "${CERT_HOME}"/*.*/; do
    _debug di "$di"
    if ! [ -d "$di" ]; then
      _debug "Not directory, skip: $di"
      continue
    fi
    d=$(basename "$di")
    _debug d "$d"
    (
      if _endswith "$d" "$ECC_SUFFIX"; then
        _isEcc=$(echo "$d" | cut -d "$ECC_SEP" -f 2)
        d=$(echo "$d" | cut -d "$ECC_SEP" -f 1)
      fi
      renew "$d" "$_isEcc"
    )
    rc="$?"
    _debug "Return code: $rc"
    if [ "$rc" != "0" ]; then
      if [ "$rc" = "$RENEW_SKIP" ]; then
        _info "Skipped $d"
      elif [ "$_stopRenewOnError" ]; then
        _err "Error renew $d,  stop now."
        return "$rc"
      else
        _ret="$rc"
        _err "Error renew $d."
      fi
    fi
  done
  return "$_ret"
}

#csr webroot
signcsr() {
  _csrfile="$1"
  _csrW="$2"
  if [ -z "$_csrfile" ] || [ -z "$_csrW" ]; then
    _usage "Usage: $PROJECT_ENTRY --signcsr  --csr mycsr.csr  -w /path/to/webroot/a.com/ "
    return 1
  fi

  _initpath

  _csrsubj=$(_readSubjectFromCSR "$_csrfile")
  if [ "$?" != "0" ]; then
    _err "Can not read subject from csr: $_csrfile"
    return 1
  fi
  _debug _csrsubj "$_csrsubj"
  if _contains "$_csrsubj" ' ' || ! _contains "$_csrsubj" '.'; then
    _info "It seems that the subject: $_csrsubj is not a valid domain name. Drop it."
    _csrsubj=""
  fi

  _csrdomainlist=$(_readSubjectAltNamesFromCSR "$_csrfile")
  if [ "$?" != "0" ]; then
    _err "Can not read domain list from csr: $_csrfile"
    return 1
  fi
  _debug "_csrdomainlist" "$_csrdomainlist"

  if [ -z "$_csrsubj" ]; then
    _csrsubj="$(_getfield "$_csrdomainlist" 1)"
    _debug _csrsubj "$_csrsubj"
    _csrdomainlist="$(echo "$_csrdomainlist" | cut -d , -f 2-)"
    _debug "_csrdomainlist" "$_csrdomainlist"
  fi

  if [ -z "$_csrsubj" ]; then
    _err "Can not read subject from csr: $_csrfile"
    return 1
  fi

  _csrkeylength=$(_readKeyLengthFromCSR "$_csrfile")
  if [ "$?" != "0" ] || [ -z "$_csrkeylength" ]; then
    _err "Can not read key length from csr: $_csrfile"
    return 1
  fi

  _initpath "$_csrsubj" "$_csrkeylength"
  mkdir -p "$DOMAIN_PATH"

  _info "Copy csr to: $CSR_PATH"
  cp "$_csrfile" "$CSR_PATH"

  issue "$_csrW" "$_csrsubj" "$_csrdomainlist" "$_csrkeylength"

}

showcsr() {
  _csrfile="$1"
  _csrd="$2"
  if [ -z "$_csrfile" ] && [ -z "$_csrd" ]; then
    _usage "Usage: $PROJECT_ENTRY --showcsr  --csr mycsr.csr"
    return 1
  fi

  _initpath

  _csrsubj=$(_readSubjectFromCSR "$_csrfile")
  if [ "$?" != "0" ] || [ -z "$_csrsubj" ]; then
    _err "Can not read subject from csr: $_csrfile"
    return 1
  fi

  _info "Subject=$_csrsubj"

  _csrdomainlist=$(_readSubjectAltNamesFromCSR "$_csrfile")
  if [ "$?" != "0" ]; then
    _err "Can not read domain list from csr: $_csrfile"
    return 1
  fi
  _debug "_csrdomainlist" "$_csrdomainlist"

  _info "SubjectAltNames=$_csrdomainlist"

  _csrkeylength=$(_readKeyLengthFromCSR "$_csrfile")
  if [ "$?" != "0" ] || [ -z "$_csrkeylength" ]; then
    _err "Can not read key length from csr: $_csrfile"
    return 1
  fi
  _info "KeyLength=$_csrkeylength"
}

list() {
  _raw="$1"
  _initpath

  _sep="|"
  if [ "$_raw" ]; then
    printf "%s\n" "Main_Domain${_sep}KeyLength${_sep}SAN_Domains${_sep}Created${_sep}Renew"
    for di in "${CERT_HOME}"/*.*/; do
      if ! [ -d "$di" ]; then
        _debug "Not directory, skip: $di"
        continue
      fi
      d=$(basename "$di")
      _debug d "$d"
      (
        if _endswith "$d" "$ECC_SUFFIX"; then
          _isEcc=$(echo "$d" | cut -d "$ECC_SEP" -f 2)
          d=$(echo "$d" | cut -d "$ECC_SEP" -f 1)
        fi
        _initpath "$d" "$_isEcc"
        if [ -f "$DOMAIN_CONF" ]; then
          . "$DOMAIN_CONF"
          printf "%s\n" "$Le_Domain${_sep}\"$Le_Keylength\"${_sep}$Le_Alt${_sep}$Le_CertCreateTimeStr${_sep}$Le_NextRenewTimeStr"
        fi
      )
    done
  else
    if _exists column; then
      list "raw" | column -t -s "$_sep"
    else
      list "raw" | tr "$_sep" '\t'
    fi
  fi

}

_deploy() {
  _d="$1"
  _hooks="$2"

  for _d_api in $(echo "$_hooks" | tr ',' " "); do
    _deployApi="$(_findHook "$_d" deploy "$_d_api")"
    if [ -z "$_deployApi" ]; then
      _err "The deploy hook $_d_api is not found."
      return 1
    fi
    _debug _deployApi "$_deployApi"

    if ! (
      if ! . "$_deployApi"; then
        _err "Load file $_deployApi error. Please check your api file and try again."
        return 1
      fi

      d_command="${_d_api}_deploy"
      if ! _exists "$d_command"; then
        _err "It seems that your api file is not correct, it must have a function named: $d_command"
        return 1
      fi

      if ! $d_command "$_d" "$CERT_KEY_PATH" "$CERT_PATH" "$CA_CERT_PATH" "$CERT_FULLCHAIN_PATH"; then
        _err "Error deploy for domain:$_d"
        return 1
      fi
    ); then
      _err "Deploy error."
      return 1
    else
      _info "$(__green Success)"
    fi
  done
}

#domain hooks
deploy() {
  _d="$1"
  _hooks="$2"
  _isEcc="$3"
  if [ -z "$_hooks" ]; then
    _usage "Usage: $PROJECT_ENTRY --deploy -d domain.com --deploy-hook cpanel [--ecc] "
    return 1
  fi

  _initpath "$_d" "$_isEcc"
  if [ ! -d "$DOMAIN_PATH" ]; then
    _err "Domain is not valid:'$_d'"
    return 1
  fi

  . "$DOMAIN_CONF"

  _savedomainconf Le_DeployHook "$_hooks"

  _deploy "$_d" "$_hooks"
}

installcert() {
  _main_domain="$1"
  if [ -z "$_main_domain" ]; then
    _usage "Usage: $PROJECT_ENTRY --installcert -d domain.com  [--ecc] [--cert-file cert-file-path]  [--key-file key-file-path]  [--ca-file ca-cert-file-path]   [ --reloadCmd reloadCmd] [--fullchain-file fullchain-path]"
    return 1
  fi

  _real_cert="$2"
  _real_key="$3"
  _real_ca="$4"
  _reload_cmd="$5"
  _real_fullchain="$6"
  _isEcc="$7"

  _initpath "$_main_domain" "$_isEcc"
  if [ ! -d "$DOMAIN_PATH" ]; then
    _err "Domain is not valid:'$_main_domain'"
    return 1
  fi

  _savedomainconf "Le_RealCertPath" "$_real_cert"
  _savedomainconf "Le_RealCACertPath" "$_real_ca"
  _savedomainconf "Le_RealKeyPath" "$_real_key"
  _savedomainconf "Le_ReloadCmd" "$_reload_cmd"
  _savedomainconf "Le_RealFullChainPath" "$_real_fullchain"

  _installcert "$_main_domain" "$_real_cert" "$_real_key" "$_real_ca" "$_real_fullchain" "$_reload_cmd"
}

#domain  cert  key  ca  fullchain reloadcmd backup-prefix
_installcert() {
  _main_domain="$1"
  _real_cert="$2"
  _real_key="$3"
  _real_ca="$4"
  _real_fullchain="$5"
  _reload_cmd="$6"
  _backup_prefix="$7"

  if [ "$_real_cert" = "$NO_VALUE" ]; then
    _real_cert=""
  fi
  if [ "$_real_key" = "$NO_VALUE" ]; then
    _real_key=""
  fi
  if [ "$_real_ca" = "$NO_VALUE" ]; then
    _real_ca=""
  fi
  if [ "$_reload_cmd" = "$NO_VALUE" ]; then
    _reload_cmd=""
  fi
  if [ "$_real_fullchain" = "$NO_VALUE" ]; then
    _real_fullchain=""
  fi

  _backup_path="$DOMAIN_BACKUP_PATH/$_backup_prefix"
  mkdir -p "$_backup_path"

  if [ "$_real_cert" ]; then
    _info "Installing cert to:$_real_cert"
    if [ -f "$_real_cert" ] && [ ! "$IS_RENEW" ]; then
      cp "$_real_cert" "$_backup_path/cert.bak"
    fi
    cat "$CERT_PATH" >"$_real_cert"
  fi

  if [ "$_real_ca" ]; then
    _info "Installing CA to:$_real_ca"
    if [ "$_real_ca" = "$_real_cert" ]; then
      echo "" >>"$_real_ca"
      cat "$CA_CERT_PATH" >>"$_real_ca"
    else
      if [ -f "$_real_ca" ] && [ ! "$IS_RENEW" ]; then
        cp "$_real_ca" "$_backup_path/ca.bak"
      fi
      cat "$CA_CERT_PATH" >"$_real_ca"
    fi
  fi

  if [ "$_real_key" ]; then
    _info "Installing key to:$_real_key"
    if [ -f "$_real_key" ] && [ ! "$IS_RENEW" ]; then
      cp "$_real_key" "$_backup_path/key.bak"
    fi
    cat "$CERT_KEY_PATH" >"$_real_key"
  fi

  if [ "$_real_fullchain" ]; then
    _info "Installing full chain to:$_real_fullchain"
    if [ -f "$_real_fullchain" ] && [ ! "$IS_RENEW" ]; then
      cp "$_real_fullchain" "$_backup_path/fullchain.bak"
    fi
    cat "$CERT_FULLCHAIN_PATH" >"$_real_fullchain"
  fi

  if [ "$_reload_cmd" ]; then
    _info "Run reload cmd: $_reload_cmd"
    if (
      export CERT_PATH
      export CERT_KEY_PATH
      export CA_CERT_PATH
      export CERT_FULLCHAIN_PATH
      export Le_Domain
      cd "$DOMAIN_PATH" && eval "$_reload_cmd"
    ); then
      _info "$(__green "Reload success")"
    else
      _err "Reload error for :$Le_Domain"
    fi
  fi

}

#confighome
installcronjob() {
  _c_home="$1"
  _initpath
  if ! _exists "crontab"; then
    _err "crontab doesn't exist, so, we can not install cron jobs."
    _err "All your certs will not be renewed automatically."
    _err "You must add your own cron job to call '$PROJECT_ENTRY --cron' everyday."
    return 1
  fi

  _info "Installing cron job"
  if ! crontab -l | grep "$PROJECT_ENTRY --cron"; then
    if [ -f "$LE_WORKING_DIR/$PROJECT_ENTRY" ]; then
      lesh="\"$LE_WORKING_DIR\"/$PROJECT_ENTRY"
    else
      _err "Can not install cronjob, $PROJECT_ENTRY not found."
      return 1
    fi

    if [ "$_c_home" ]; then
      _c_entry="--config-home \"$_c_home\" "
    fi
    _t=$(_time)
    random_minute=$(_math $_t % 60)
    if _exists uname && uname -a | grep SunOS >/dev/null; then
      crontab -l | {
        cat
        echo "$random_minute 0 * * * $lesh --cron --home \"$LE_WORKING_DIR\" $_c_entry> /dev/null"
      } | crontab --
    else
      crontab -l | {
        cat
        echo "$random_minute 0 * * * $lesh --cron --home \"$LE_WORKING_DIR\" $_c_entry> /dev/null"
      } | crontab -
    fi
  fi
  if [ "$?" != "0" ]; then
    _err "Install cron job failed. You need to manually renew your certs."
    _err "Or you can add cronjob by yourself:"
    _err "$lesh --cron --home \"$LE_WORKING_DIR\" > /dev/null"
    return 1
  fi
}

uninstallcronjob() {
  if ! _exists "crontab"; then
    return
  fi
  _info "Removing cron job"
  cr="$(crontab -l | grep "$PROJECT_ENTRY --cron")"
  if [ "$cr" ]; then
    if _exists uname && uname -a | grep solaris >/dev/null; then
      crontab -l | sed "/$PROJECT_ENTRY --cron/d" | crontab --
    else
      crontab -l | sed "/$PROJECT_ENTRY --cron/d" | crontab -
    fi
    LE_WORKING_DIR="$(echo "$cr" | cut -d ' ' -f 9 | tr -d '"')"
    _info LE_WORKING_DIR "$LE_WORKING_DIR"
    if _contains "$cr" "--config-home"; then
      LE_CONFIG_HOME="$(echo "$cr" | cut -d ' ' -f 11 | tr -d '"')"
      _debug LE_CONFIG_HOME "$LE_CONFIG_HOME"
    fi
  fi
  _initpath

}

revoke() {
  Le_Domain="$1"
  if [ -z "$Le_Domain" ]; then
    _usage "Usage: $PROJECT_ENTRY --revoke -d domain.com  [--ecc]"
    return 1
  fi

  _isEcc="$2"

  _initpath "$Le_Domain" "$_isEcc"
  if [ ! -f "$DOMAIN_CONF" ]; then
    _err "$Le_Domain is not a issued domain, skip."
    return 1
  fi

  if [ ! -f "$CERT_PATH" ]; then
    _err "Cert for $Le_Domain $CERT_PATH is not found, skip."
    return 1
  fi

  cert="$(_getfile "${CERT_PATH}" "${BEGIN_CERT}" "${END_CERT}" | tr -d "\r\n" | _url_replace)"

  if [ -z "$cert" ]; then
    _err "Cert for $Le_Domain is empty found, skip."
    return 1
  fi

  _initAPI

  data="{\"resource\": \"revoke-cert\", \"certificate\": \"$cert\"}"
  uri="${ACME_REVOKE_CERT}"

  if [ -f "$CERT_KEY_PATH" ]; then
    _info "Try domain key first."
    if _send_signed_request "$uri" "$data" "" "$CERT_KEY_PATH"; then
      if [ -z "$response" ]; then
        _info "Revoke success."
        rm -f "$CERT_PATH"
        return 0
      else
        _err "Revoke error by domain key."
        _err "$response"
      fi
    fi
  else
    _info "Domain key file doesn't exists."
  fi

  _info "Try account key."

  if _send_signed_request "$uri" "$data" "" "$ACCOUNT_KEY_PATH"; then
    if [ -z "$response" ]; then
      _info "Revoke success."
      rm -f "$CERT_PATH"
      return 0
    else
      _err "Revoke error."
      _debug "$response"
    fi
  fi
  return 1
}

#domain  ecc
remove() {
  Le_Domain="$1"
  if [ -z "$Le_Domain" ]; then
    _usage "Usage: $PROJECT_ENTRY --remove -d domain.com [--ecc]"
    return 1
  fi

  _isEcc="$2"

  _initpath "$Le_Domain" "$_isEcc"
  _removed_conf="$DOMAIN_CONF.removed"
  if [ ! -f "$DOMAIN_CONF" ]; then
    if [ -f "$_removed_conf" ]; then
      _err "$Le_Domain is already removed, You can remove the folder by yourself: $DOMAIN_PATH"
    else
      _err "$Le_Domain is not a issued domain, skip."
    fi
    return 1
  fi

  if mv "$DOMAIN_CONF" "$_removed_conf"; then
    _info "$Le_Domain is removed, the key and cert files are in $(__green $DOMAIN_PATH)"
    _info "You can remove them by yourself."
    return 0
  else
    _err "Remove $Le_Domain failed."
    return 1
  fi
}

#domain vtype
_deactivate() {
  _d_domain="$1"
  _d_type="$2"
  _initpath

  _d_i=0
  _d_max_retry=9
  while [ "$_d_i" -lt "$_d_max_retry" ]; do
    _info "Deactivate: $_d_domain"
    _d_i="$(_math $_d_i + 1)"

    if ! __get_domain_new_authz "$_d_domain"; then
      _err "Can not get domain new authz token."
      return 1
    fi

    authzUri="$(echo "$responseHeaders" | grep "^Location:" | _head_n 1 | cut -d ' ' -f 2 | tr -d "\r\n")"
    _debug "authzUri" "$authzUri"

    if [ ! -z "$code" ] && [ ! "$code" = '201' ]; then
      _err "new-authz error: $response"
      return 1
    fi

    entry="$(printf "%s\n" "$response" | _egrep_o '{"type":"[^"]*","status":"valid","uri"[^}]*')"
    _debug entry "$entry"

    if [ -z "$entry" ]; then
      _info "No more valid entry found."
      break
    fi

    _vtype="$(printf "%s\n" "$entry" | _egrep_o '"type": *"[^"]*"' | cut -d : -f 2 | tr -d '"')"
    _debug _vtype "$_vtype"
    _info "Found $_vtype"

    uri="$(printf "%s\n" "$entry" | _egrep_o '"uri":"[^"]*' | cut -d : -f 2,3 | tr -d '"')"
    _debug uri "$uri"

    if [ "$_d_type" ] && [ "$_d_type" != "$_vtype" ]; then
      _info "Skip $_vtype"
      continue
    fi

    _info "Deactivate: $_vtype"

    if ! _send_signed_request "$authzUri" "{\"resource\": \"authz\", \"status\":\"deactivated\"}"; then
      _err "Can not deactivate $_vtype."
      return 1
    fi

    _info "Deactivate: $_vtype success."

  done
  _debug "$_d_i"
  if [ "$_d_i" -lt "$_d_max_retry" ]; then
    _info "Deactivated success!"
  else
    _err "Deactivate failed."
  fi

}

deactivate() {
  _d_domain_list="$1"
  _d_type="$2"
  _initpath
  _initAPI
  _debug _d_domain_list "$_d_domain_list"
  if [ -z "$(echo $_d_domain_list | cut -d , -f 1)" ]; then
    _usage "Usage: $PROJECT_ENTRY --deactivate -d domain.com [-d domain.com]"
    return 1
  fi
  for _d_dm in $(echo "$_d_domain_list" | tr ',' ' '); do
    if [ -z "$_d_dm" ] || [ "$_d_dm" = "$NO_VALUE" ]; then
      continue
    fi
    if ! _deactivate "$_d_dm" "$_d_type"; then
      return 1
    fi
  done
}

# Detect profile file if not specified as environment variable
_detect_profile() {
  if [ -n "$PROFILE" -a -f "$PROFILE" ]; then
    echo "$PROFILE"
    return
  fi

  DETECTED_PROFILE=''
  SHELLTYPE="$(basename "/$SHELL")"

  if [ "$SHELLTYPE" = "bash" ]; then
    if [ -f "$HOME/.bashrc" ]; then
      DETECTED_PROFILE="$HOME/.bashrc"
    elif [ -f "$HOME/.bash_profile" ]; then
      DETECTED_PROFILE="$HOME/.bash_profile"
    fi
  elif [ "$SHELLTYPE" = "zsh" ]; then
    DETECTED_PROFILE="$HOME/.zshrc"
  fi

  if [ -z "$DETECTED_PROFILE" ]; then
    if [ -f "$HOME/.profile" ]; then
      DETECTED_PROFILE="$HOME/.profile"
    elif [ -f "$HOME/.bashrc" ]; then
      DETECTED_PROFILE="$HOME/.bashrc"
    elif [ -f "$HOME/.bash_profile" ]; then
      DETECTED_PROFILE="$HOME/.bash_profile"
    elif [ -f "$HOME/.zshrc" ]; then
      DETECTED_PROFILE="$HOME/.zshrc"
    fi
  fi

  if [ ! -z "$DETECTED_PROFILE" ]; then
    echo "$DETECTED_PROFILE"
  fi
}

_initconf() {
  _initpath
  if [ ! -f "$ACCOUNT_CONF_PATH" ]; then
    echo "

#LOG_FILE=\"$DEFAULT_LOG_FILE\"
#LOG_LEVEL=1

#AUTO_UPGRADE=\"1\"

#NO_TIMESTAMP=1

    " >"$ACCOUNT_CONF_PATH"
  fi
}

# nocron
_precheck() {
  _nocron="$1"

  if ! _exists "curl" && ! _exists "wget"; then
    _err "Please install curl or wget first, we need to access http resources."
    return 1
  fi

  if [ -z "$_nocron" ]; then
    if ! _exists "crontab"; then
      _err "It is recommended to install crontab first. try to install 'cron, crontab, crontabs or vixie-cron'."
      _err "We need to set cron job to renew the certs automatically."
      _err "Otherwise, your certs will not be able to be renewed automatically."
      if [ -z "$FORCE" ]; then
        _err "Please add '--force' and try install again to go without crontab."
        _err "./$PROJECT_ENTRY --install --force"
        return 1
      fi
    fi
  fi

  if ! _exists "${ACME_OPENSSL_BIN:-openssl}"; then
    _err "Please install openssl first. ACME_OPENSSL_BIN=$ACME_OPENSSL_BIN"
    _err "We need openssl to generate keys."
    return 1
  fi

  if ! _exists "nc"; then
    _err "It is recommended to install nc first, try to install 'nc' or 'netcat'."
    _err "We use nc for standalone server if you use standalone mode."
    _err "If you don't use standalone mode, just ignore this warning."
  fi

  return 0
}

_setShebang() {
  _file="$1"
  _shebang="$2"
  if [ -z "$_shebang" ]; then
    _usage "Usage: file shebang"
    return 1
  fi
  cp "$_file" "$_file.tmp"
  echo "$_shebang" >"$_file"
  sed -n 2,99999p "$_file.tmp" >>"$_file"
  rm -f "$_file.tmp"
}

#confighome
_installalias() {
  _c_home="$1"
  _initpath

  _envfile="$LE_WORKING_DIR/$PROJECT_ENTRY.env"
  if [ "$_upgrading" ] && [ "$_upgrading" = "1" ]; then
    echo "$(cat "$_envfile")" | sed "s|^LE_WORKING_DIR.*$||" >"$_envfile"
    echo "$(cat "$_envfile")" | sed "s|^alias le.*$||" >"$_envfile"
    echo "$(cat "$_envfile")" | sed "s|^alias le.sh.*$||" >"$_envfile"
  fi

  if [ "$_c_home" ]; then
    _c_entry=" --config-home '$_c_home'"
  fi

  _setopt "$_envfile" "export LE_WORKING_DIR" "=" "\"$LE_WORKING_DIR\""
  if [ "$_c_home" ]; then
    _setopt "$_envfile" "export LE_CONFIG_HOME" "=" "\"$LE_CONFIG_HOME\""
  fi
  _setopt "$_envfile" "alias $PROJECT_ENTRY" "=" "\"$LE_WORKING_DIR/$PROJECT_ENTRY$_c_entry\""

  _profile="$(_detect_profile)"
  if [ "$_profile" ]; then
    _debug "Found profile: $_profile"
    _info "Installing alias to '$_profile'"
    _setopt "$_profile" ". \"$_envfile\""
    _info "OK, Close and reopen your terminal to start using $PROJECT_NAME"
  else
    _info "No profile is found, you will need to go into $LE_WORKING_DIR to use $PROJECT_NAME"
  fi

  #for csh
  _cshfile="$LE_WORKING_DIR/$PROJECT_ENTRY.csh"
  _csh_profile="$HOME/.cshrc"
  if [ -f "$_csh_profile" ]; then
    _info "Installing alias to '$_csh_profile'"
    _setopt "$_cshfile" "setenv LE_WORKING_DIR" " " "\"$LE_WORKING_DIR\""
    if [ "$_c_home" ]; then
      _setopt "$_cshfile" "setenv LE_CONFIG_HOME" " " "\"$LE_CONFIG_HOME\""
    fi
    _setopt "$_cshfile" "alias $PROJECT_ENTRY" " " "\"$LE_WORKING_DIR/$PROJECT_ENTRY$_c_entry\""
    _setopt "$_csh_profile" "source \"$_cshfile\""
  fi

  #for tcsh
  _tcsh_profile="$HOME/.tcshrc"
  if [ -f "$_tcsh_profile" ]; then
    _info "Installing alias to '$_tcsh_profile'"
    _setopt "$_cshfile" "setenv LE_WORKING_DIR" " " "\"$LE_WORKING_DIR\""
    if [ "$_c_home" ]; then
      _setopt "$_cshfile" "setenv LE_CONFIG_HOME" " " "\"$LE_CONFIG_HOME\""
    fi
    _setopt "$_cshfile" "alias $PROJECT_ENTRY" " " "\"$LE_WORKING_DIR/$PROJECT_ENTRY$_c_entry\""
    _setopt "$_tcsh_profile" "source \"$_cshfile\""
  fi

}

# nocron confighome
install() {

  if [ -z "$LE_WORKING_DIR" ]; then
    LE_WORKING_DIR="$DEFAULT_INSTALL_HOME"
  fi

  _nocron="$1"
  _c_home="$2"
  if ! _initpath; then
    _err "Install failed."
    return 1
  fi
  if [ "$_nocron" ]; then
    _debug "Skip install cron job"
  fi

  if ! _precheck "$_nocron"; then
    _err "Pre-check failed, can not install."
    return 1
  fi

  if [ -z "$_c_home" ] && [ "$LE_CONFIG_HOME" != "$LE_WORKING_DIR" ]; then
    _info "Using config home: $LE_CONFIG_HOME"
    _c_home="$LE_CONFIG_HOME"
  fi

  #convert from le
  if [ -d "$HOME/.le" ]; then
    for envfile in "le.env" "le.sh.env"; do
      if [ -f "$HOME/.le/$envfile" ]; then
        if grep "le.sh" "$HOME/.le/$envfile" >/dev/null; then
          _upgrading="1"
          _info "You are upgrading from le.sh"
          _info "Renaming \"$HOME/.le\" to $LE_WORKING_DIR"
          mv "$HOME/.le" "$LE_WORKING_DIR"
          mv "$LE_WORKING_DIR/$envfile" "$LE_WORKING_DIR/$PROJECT_ENTRY.env"
          break
        fi
      fi
    done
  fi

  _info "Installing to $LE_WORKING_DIR"

  if ! mkdir -p "$LE_WORKING_DIR"; then
    _err "Can not create working dir: $LE_WORKING_DIR"
    return 1
  fi

  chmod 700 "$LE_WORKING_DIR"

  if ! mkdir -p "$LE_CONFIG_HOME"; then
    _err "Can not create config dir: $LE_CONFIG_HOME"
    return 1
  fi

  chmod 700 "$LE_CONFIG_HOME"

  cp "$PROJECT_ENTRY" "$LE_WORKING_DIR/" && chmod +x "$LE_WORKING_DIR/$PROJECT_ENTRY"

  if [ "$?" != "0" ]; then
    _err "Install failed, can not copy $PROJECT_ENTRY"
    return 1
  fi

  _info "Installed to $LE_WORKING_DIR/$PROJECT_ENTRY"

  _installalias "$_c_home"

  for subf in $_SUB_FOLDERS; do
    if [ -d "$subf" ]; then
      mkdir -p "$LE_WORKING_DIR/$subf"
      cp "$subf"/* "$LE_WORKING_DIR"/"$subf"/
    fi
  done

  if [ ! -f "$ACCOUNT_CONF_PATH" ]; then
    _initconf
  fi

  if [ "$_DEFAULT_ACCOUNT_CONF_PATH" != "$ACCOUNT_CONF_PATH" ]; then
    _setopt "$_DEFAULT_ACCOUNT_CONF_PATH" "ACCOUNT_CONF_PATH" "=" "\"$ACCOUNT_CONF_PATH\""
  fi

  if [ "$_DEFAULT_CERT_HOME" != "$CERT_HOME" ]; then
    _saveaccountconf "CERT_HOME" "$CERT_HOME"
  fi

  if [ "$_DEFAULT_ACCOUNT_KEY_PATH" != "$ACCOUNT_KEY_PATH" ]; then
    _saveaccountconf "ACCOUNT_KEY_PATH" "$ACCOUNT_KEY_PATH"
  fi

  if [ -z "$_nocron" ]; then
    installcronjob "$_c_home"
  fi

  if [ -z "$NO_DETECT_SH" ]; then
    #Modify shebang
    if _exists bash; then
      _info "Good, bash is found, so change the shebang to use bash as preferred."
      _shebang='#!'"$(env bash -c "command -v bash")"
      _setShebang "$LE_WORKING_DIR/$PROJECT_ENTRY" "$_shebang"
      for subf in $_SUB_FOLDERS; do
        if [ -d "$LE_WORKING_DIR/$subf" ]; then
          for _apifile in "$LE_WORKING_DIR/$subf/"*.sh; do
            _setShebang "$_apifile" "$_shebang"
          done
        fi
      done
    fi
  fi

  _info OK
}

# nocron
uninstall() {
  _nocron="$1"
  if [ -z "$_nocron" ]; then
    uninstallcronjob
  fi
  _initpath

  _uninstallalias

  rm -f "$LE_WORKING_DIR/$PROJECT_ENTRY"
  _info "The keys and certs are in \"$(__green "$LE_CONFIG_HOME")\", you can remove them by yourself."

}

_uninstallalias() {
  _initpath

  _profile="$(_detect_profile)"
  if [ "$_profile" ]; then
    _info "Uninstalling alias from: '$_profile'"
    text="$(cat "$_profile")"
    echo "$text" | sed "s|^.*\"$LE_WORKING_DIR/$PROJECT_NAME.env\"$||" >"$_profile"
  fi

  _csh_profile="$HOME/.cshrc"
  if [ -f "$_csh_profile" ]; then
    _info "Uninstalling alias from: '$_csh_profile'"
    text="$(cat "$_csh_profile")"
    echo "$text" | sed "s|^.*\"$LE_WORKING_DIR/$PROJECT_NAME.csh\"$||" >"$_csh_profile"
  fi

  _tcsh_profile="$HOME/.tcshrc"
  if [ -f "$_tcsh_profile" ]; then
    _info "Uninstalling alias from: '$_csh_profile'"
    text="$(cat "$_tcsh_profile")"
    echo "$text" | sed "s|^.*\"$LE_WORKING_DIR/$PROJECT_NAME.csh\"$||" >"$_tcsh_profile"
  fi

}

cron() {
  IN_CRON=1
  _initpath
  _info "$(__green "===Starting cron===")"
  if [ "$AUTO_UPGRADE" = "1" ]; then
    export LE_WORKING_DIR
    (
      if ! upgrade; then
        _err "Cron:Upgrade failed!"
        return 1
      fi
    )
    . "$LE_WORKING_DIR/$PROJECT_ENTRY" >/dev/null

    if [ -t 1 ]; then
      __INTERACTIVE="1"
    fi

    _info "Auto upgraded to: $VER"
  fi
  renewAll
  _ret="$?"
  IN_CRON=""
  _info "$(__green "===End cron===")"
  exit $_ret
}

version() {
  echo "$PROJECT"
  echo "v$VER"
}

showhelp() {
  _initpath
  version
  echo "Usage: $PROJECT_ENTRY  command ...[parameters]....
Commands:
  --help, -h               Show this help message.
  --version, -v            Show version info.
  --install                Install $PROJECT_NAME to your system.
  --uninstall              Uninstall $PROJECT_NAME, and uninstall the cron job.
  --upgrade                Upgrade $PROJECT_NAME to the latest code from $PROJECT.
  --issue                  Issue a cert.
  --signcsr                Issue a cert from an existing csr.
  --deploy                 Deploy the cert to your server.
  --install-cert           Install the issued cert to apache/nginx or any other server.
  --renew, -r              Renew a cert.
  --renew-all              Renew all the certs.
  --revoke                 Revoke a cert.
  --remove                 Remove the cert from $PROJECT
  --list                   List all the certs.
  --showcsr                Show the content of a csr.
  --install-cronjob        Install the cron job to renew certs, you don't need to call this. The 'install' command can automatically install the cron job.
  --uninstall-cronjob      Uninstall the cron job. The 'uninstall' command can do this automatically.
  --cron                   Run cron job to renew all the certs.
  --toPkcs                 Export the certificate and key to a pfx file.
  --toPkcs8                Convert to pkcs8 format.
  --update-account         Update account info.
  --register-account       Register account key.
  --create-account-key     Create an account private key, professional use.
  --create-domain-key      Create an domain private key, professional use.
  --createCSR, -ccsr       Create CSR , professional use.
  --deactivate             Deactivate the domain authz, professional use.

Parameters:
  --domain, -d   domain.tld         Specifies a domain, used to issue, renew or revoke etc.
  --force, -f                       Used to force to install or force to renew a cert immediately.
  --staging, --test                 Use staging server, just for test.
  --debug                           Output debug info.
  --output-insecure                 Output all the sensitive messages. By default all the credentials/sensitive messages are hidden from the output/debug/log for secure.
  --webroot, -w  /path/to/webroot   Specifies the web root folder for web root mode.
  --standalone                      Use standalone mode.
  --stateless                       Use stateless mode, see: $_STATELESS_WIKI
  --tls                             Use standalone tls mode.
  --apache                          Use apache mode.
  --dns [dns_cf|dns_dp|dns_cx|/path/to/api/file]   Use dns mode or dns api.
  --dnssleep  [$DEFAULT_DNS_SLEEP]                  The time in seconds to wait for all the txt records to take effect in dns api mode. Default $DEFAULT_DNS_SLEEP seconds.

  --keylength, -k [2048]            Specifies the domain key length: 2048, 3072, 4096, 8192 or ec-256, ec-384.
  --accountkeylength, -ak [2048]    Specifies the account key length.
  --log    [/path/to/logfile]       Specifies the log file. The default is: \"$DEFAULT_LOG_FILE\" if you don't give a file path here.
  --log-level 1|2                   Specifies the log level, default is 1.
  --syslog [0|3|6|7]                Syslog level, 0: disable syslog, 3: error, 6: info, 7: debug.

  These parameters are to install the cert to nginx/apache or anyother server after issue/renew a cert:

  --cert-file                       After issue/renew, the cert will be copied to this path.
  --key-file                        After issue/renew, the key will be copied to this path.
  --ca-file                         After issue/renew, the intermediate cert will be copied to this path.
  --fullchain-file                  After issue/renew, the fullchain cert will be copied to this path.

  --reloadcmd \"service nginx reload\" After issue/renew, it's used to reload the server.

  --server SERVER                   ACME Directory Resource URI. (default: https://acme-v01.api.letsencrypt.org/directory)
  --accountconf                     Specifies a customized account config file.
  --home                            Specifies the home dir for $PROJECT_NAME .
  --cert-home                       Specifies the home dir to save all the certs, only valid for '--install' command.
  --config-home                     Specifies the home dir to save all the configurations.
  --useragent                       Specifies the user agent string. it will be saved for future use too.
  --accountemail                    Specifies the account email for registering, Only valid for the '--install' command.
  --accountkey                      Specifies the account key path, Only valid for the '--install' command.
  --days                            Specifies the days to renew the cert when using '--issue' command. The max value is $MAX_RENEW days.
  --httpport                        Specifies the standalone listening port. Only valid if the server is behind a reverse proxy or load balancer.
  --tlsport                         Specifies the standalone tls listening port. Only valid if the server is behind a reverse proxy or load balancer.
  --local-address                   Specifies the standalone/tls server listening address, in case you have multiple ip addresses.
  --listraw                         Only used for '--list' command, list the certs in raw format.
  --stopRenewOnError, -se           Only valid for '--renew-all' command. Stop if one cert has error in renewal.
  --insecure                        Do not check the server certificate, in some devices, the api server's certificate may not be trusted.
  --ca-bundle                       Specifies the path to the CA certificate bundle to verify api server's certificate.
  --ca-path                         Specifies directory containing CA certificates in PEM format, used by wget or curl.
  --nocron                          Only valid for '--install' command, which means: do not install the default cron job. In this case, the certs will not be renewed automatically.
  --no-color                        Do not output color text.
  --ecc                             Specifies to use the ECC cert. Valid for '--install-cert', '--renew', '--revoke', '--toPkcs' and '--createCSR'
  --csr                             Specifies the input csr.
  --pre-hook                        Command to be run before obtaining any certificates.
  --post-hook                       Command to be run after attempting to obtain/renew certificates. No matter the obtain/renew is success or failed.
  --renew-hook                      Command to be run once for each successfully renewed certificate.
  --deploy-hook                     The hook file to deploy cert
  --ocsp-must-staple, --ocsp        Generate ocsp must Staple extension.
  --auto-upgrade   [0|1]            Valid for '--upgrade' command, indicating whether to upgrade automatically in future.
  --listen-v4                       Force standalone/tls server to listen at ipv4.
  --listen-v6                       Force standalone/tls server to listen at ipv6.
  --openssl-bin                     Specifies a custom openssl bin location.
  --use-wget                        Force to use wget, if you have both curl and wget installed.
  "
}

# nocron
_installOnline() {
  _info "Installing from online archive."
  _nocron="$1"
  if [ ! "$BRANCH" ]; then
    BRANCH="master"
  fi

  target="$PROJECT/archive/$BRANCH.tar.gz"
  _info "Downloading $target"
  localname="$BRANCH.tar.gz"
  if ! _get "$target" >$localname; then
    _err "Download error."
    return 1
  fi
  (
    _info "Extracting $localname"
    if ! (tar xzf $localname || gtar xzf $localname); then
      _err "Extraction error."
      exit 1
    fi

    cd "$PROJECT_NAME-$BRANCH"
    chmod +x $PROJECT_ENTRY
    if ./$PROJECT_ENTRY install "$_nocron"; then
      _info "Install success!"
    fi

    cd ..

    rm -rf "$PROJECT_NAME-$BRANCH"
    rm -f "$localname"
  )
}

upgrade() {
  if (
    _initpath
    export LE_WORKING_DIR
    cd "$LE_WORKING_DIR"
    _installOnline "nocron"
  ); then
    _info "Upgrade success!"
    exit 0
  else
    _err "Upgrade failed!"
    exit 1
  fi
}

_processAccountConf() {
  if [ "$_useragent" ]; then
    _saveaccountconf "USER_AGENT" "$_useragent"
  elif [ "$USER_AGENT" ] && [ "$USER_AGENT" != "$DEFAULT_USER_AGENT" ]; then
    _saveaccountconf "USER_AGENT" "$USER_AGENT"
  fi

  if [ "$_accountemail" ]; then
    _saveaccountconf "ACCOUNT_EMAIL" "$_accountemail"
  elif [ "$ACCOUNT_EMAIL" ] && [ "$ACCOUNT_EMAIL" != "$DEFAULT_ACCOUNT_EMAIL" ]; then
    _saveaccountconf "ACCOUNT_EMAIL" "$ACCOUNT_EMAIL"
  fi

  if [ "$_openssl_bin" ]; then
    _saveaccountconf "ACME_OPENSSL_BIN" "$_openssl_bin"
  elif [ "$ACME_OPENSSL_BIN" ] && [ "$ACME_OPENSSL_BIN" != "$DEFAULT_OPENSSL_BIN" ]; then
    _saveaccountconf "ACME_OPENSSL_BIN" "$ACME_OPENSSL_BIN"
  fi

  if [ "$_auto_upgrade" ]; then
    _saveaccountconf "AUTO_UPGRADE" "$_auto_upgrade"
  elif [ "$AUTO_UPGRADE" ]; then
    _saveaccountconf "AUTO_UPGRADE" "$AUTO_UPGRADE"
  fi

  if [ "$_use_wget" ]; then
    _saveaccountconf "ACME_USE_WGET" "$_use_wget"
  elif [ "$ACME_USE_WGET" ]; then
    _saveaccountconf "ACME_USE_WGET" "$ACME_USE_WGET"
  fi

}

_process() {
  _CMD=""
  _domain=""
  _altdomains="$NO_VALUE"
  _webroot=""
  _keylength=""
  _accountkeylength=""
  _cert_file=""
  _key_file=""
  _ca_file=""
  _fullchain_file=""
  _reloadcmd=""
  _password=""
  _accountconf=""
  _useragent=""
  _accountemail=""
  _accountkey=""
  _certhome=""
  _confighome=""
  _httpport=""
  _tlsport=""
  _dnssleep=""
  _listraw=""
  _stopRenewOnError=""
  #_insecure=""
  _ca_bundle=""
  _ca_path=""
  _nocron=""
  _ecc=""
  _csr=""
  _pre_hook=""
  _post_hook=""
  _renew_hook=""
  _deploy_hook=""
  _logfile=""
  _log=""
  _local_address=""
  _log_level=""
  _auto_upgrade=""
  _listen_v4=""
  _listen_v6=""
  _openssl_bin=""
  _syslog=""
  _use_wget=""
  _server=""
  while [ ${#} -gt 0 ]; do
    case "${1}" in

      --help | -h)
        showhelp
        return
        ;;
      --version | -v)
        version
        return
        ;;
      --install)
        _CMD="install"
        ;;
      --uninstall)
        _CMD="uninstall"
        ;;
      --upgrade)
        _CMD="upgrade"
        ;;
      --issue)
        _CMD="issue"
        ;;
      --deploy)
        _CMD="deploy"
        ;;
      --signcsr)
        _CMD="signcsr"
        ;;
      --showcsr)
        _CMD="showcsr"
        ;;
      --installcert | -i | --install-cert)
        _CMD="installcert"
        ;;
      --renew | -r)
        _CMD="renew"
        ;;
      --renewAll | --renewall | --renew-all)
        _CMD="renewAll"
        ;;
      --revoke)
        _CMD="revoke"
        ;;
      --remove)
        _CMD="remove"
        ;;
      --list)
        _CMD="list"
        ;;
      --installcronjob | --install-cronjob)
        _CMD="installcronjob"
        ;;
      --uninstallcronjob | --uninstall-cronjob)
        _CMD="uninstallcronjob"
        ;;
      --cron)
        _CMD="cron"
        ;;
      --toPkcs)
        _CMD="toPkcs"
        ;;
      --toPkcs8)
        _CMD="toPkcs8"
        ;;
      --createAccountKey | --createaccountkey | -cak | --create-account-key)
        _CMD="createAccountKey"
        ;;
      --createDomainKey | --createdomainkey | -cdk | --create-domain-key)
        _CMD="createDomainKey"
        ;;
      --createCSR | --createcsr | -ccr)
        _CMD="createCSR"
        ;;
      --deactivate)
        _CMD="deactivate"
        ;;
      --updateaccount | --update-account)
        _CMD="updateaccount"
        ;;
      --registeraccount | --register-account)
        _CMD="registeraccount"
        ;;
      --domain | -d)
        _dvalue="$2"

        if [ "$_dvalue" ]; then
          if _startswith "$_dvalue" "-"; then
            _err "'$_dvalue' is not a valid domain for parameter '$1'"
            return 1
          fi
          if _is_idn "$_dvalue" && ! _exists idn; then
            _err "It seems that $_dvalue is an IDN( Internationalized Domain Names), please install 'idn' command first."
            return 1
          fi

          if [ -z "$_domain" ]; then
            _domain="$_dvalue"
          else
            if [ "$_altdomains" = "$NO_VALUE" ]; then
              _altdomains="$_dvalue"
            else
              _altdomains="$_altdomains,$_dvalue"
            fi
          fi
        fi

        shift
        ;;

      --force | -f)
        FORCE="1"
        ;;
      --staging | --test)
        STAGE="1"
        ;;
      --server)
        ACME_DIRECTORY="$2"
        _server="$ACME_DIRECTORY"
        export ACME_DIRECTORY
        shift
        ;;
      --debug)
        if [ -z "$2" ] || _startswith "$2" "-"; then
          DEBUG="$DEBUG_LEVEL_DEFAULT"
        else
          DEBUG="$2"
          shift
        fi
        ;;
      --output-insecure)
        export OUTPUT_INSECURE=1
        ;;
      --webroot | -w)
        wvalue="$2"
        if [ -z "$_webroot" ]; then
          _webroot="$wvalue"
        else
          _webroot="$_webroot,$wvalue"
        fi
        shift
        ;;
      --standalone)
        wvalue="$NO_VALUE"
        if [ -z "$_webroot" ]; then
          _webroot="$wvalue"
        else
          _webroot="$_webroot,$wvalue"
        fi
        ;;
      --stateless)
        wvalue="$MODE_STATELESS"
        if [ -z "$_webroot" ]; then
          _webroot="$wvalue"
        else
          _webroot="$_webroot,$wvalue"
        fi
        ;;
      --local-address)
        lvalue="$2"
        _local_address="$_local_address$lvalue,"
        shift
        ;;
      --apache)
        wvalue="apache"
        if [ -z "$_webroot" ]; then
          _webroot="$wvalue"
        else
          _webroot="$_webroot,$wvalue"
        fi
        ;;
      --nginx)
        wvalue="$NGINX"
        if [ -z "$_webroot" ]; then
          _webroot="$wvalue"
        else
          _webroot="$_webroot,$wvalue"
        fi
        ;;
      --tls)
        wvalue="$W_TLS"
        if [ -z "$_webroot" ]; then
          _webroot="$wvalue"
        else
          _webroot="$_webroot,$wvalue"
        fi
        ;;
      --dns)
        wvalue="dns"
        if ! _startswith "$2" "-"; then
          wvalue="$2"
          shift
        fi
        if [ -z "$_webroot" ]; then
          _webroot="$wvalue"
        else
          _webroot="$_webroot,$wvalue"
        fi
        ;;
      --dnssleep)
        _dnssleep="$2"
        Le_DNSSleep="$_dnssleep"
        shift
        ;;

      --keylength | -k)
        _keylength="$2"
        shift
        ;;
      --accountkeylength | -ak)
        _accountkeylength="$2"
        shift
        ;;

      --cert-file | --certpath)
        _cert_file="$2"
        shift
        ;;
      --key-file | --keypath)
        _key_file="$2"
        shift
        ;;
      --ca-file | --capath)
        _ca_file="$2"
        shift
        ;;
      --fullchain-file | --fullchainpath)
        _fullchain_file="$2"
        shift
        ;;
      --reloadcmd | --reloadCmd)
        _reloadcmd="$2"
        shift
        ;;
      --password)
        _password="$2"
        shift
        ;;
      --accountconf)
        _accountconf="$2"
        ACCOUNT_CONF_PATH="$_accountconf"
        shift
        ;;
      --home)
        LE_WORKING_DIR="$2"
        shift
        ;;
      --certhome | --cert-home)
        _certhome="$2"
        CERT_HOME="$_certhome"
        shift
        ;;
      --config-home)
        _confighome="$2"
        LE_CONFIG_HOME="$_confighome"
        shift
        ;;
      --useragent)
        _useragent="$2"
        USER_AGENT="$_useragent"
        shift
        ;;
      --accountemail)
        _accountemail="$2"
        ACCOUNT_EMAIL="$_accountemail"
        shift
        ;;
      --accountkey)
        _accountkey="$2"
        ACCOUNT_KEY_PATH="$_accountkey"
        shift
        ;;
      --days)
        _days="$2"
        Le_RenewalDays="$_days"
        shift
        ;;
      --httpport)
        _httpport="$2"
        Le_HTTPPort="$_httpport"
        shift
        ;;
      --tlsport)
        _tlsport="$2"
        Le_TLSPort="$_tlsport"
        shift
        ;;

      --listraw)
        _listraw="raw"
        ;;
      --stopRenewOnError | --stoprenewonerror | -se)
        _stopRenewOnError="1"
        ;;
      --insecure)
        #_insecure="1"
        HTTPS_INSECURE="1"
        ;;
      --ca-bundle)
        _ca_bundle="$(_readlink -f "$2")"
        CA_BUNDLE="$_ca_bundle"
        shift
        ;;
      --ca-path)
        _ca_path="$2"
        CA_PATH="$_ca_path"
        shift
        ;;
      --nocron)
        _nocron="1"
        ;;
      --no-color)
        export ACME_NO_COLOR=1
        ;;
      --ecc)
        _ecc="isEcc"
        ;;
      --csr)
        _csr="$2"
        shift
        ;;
      --pre-hook)
        _pre_hook="$2"
        shift
        ;;
      --post-hook)
        _post_hook="$2"
        shift
        ;;
      --renew-hook)
        _renew_hook="$2"
        shift
        ;;
      --deploy-hook)
        if [ -z "$2" ] || _startswith "$2" "-"; then
          _usage "Please specify a value for '--deploy-hook'"
          return 1
        fi
        _deploy_hook="$_deploy_hook$2,"
        shift
        ;;
      --ocsp-must-staple | --ocsp)
        Le_OCSP_Staple="1"
        ;;
      --log | --logfile)
        _log="1"
        _logfile="$2"
        if _startswith "$_logfile" '-'; then
          _logfile=""
        else
          shift
        fi
        LOG_FILE="$_logfile"
        if [ -z "$LOG_LEVEL" ]; then
          LOG_LEVEL="$DEFAULT_LOG_LEVEL"
        fi
        ;;
      --log-level)
        _log_level="$2"
        LOG_LEVEL="$_log_level"
        shift
        ;;
      --syslog)
        if ! _startswith "$2" '-'; then
          _syslog="$2"
          shift
        fi
        if [ -z "$_syslog" ]; then
          _syslog="$SYSLOG_LEVEL_DEFAULT"
        fi
        ;;
      --auto-upgrade)
        _auto_upgrade="$2"
        if [ -z "$_auto_upgrade" ] || _startswith "$_auto_upgrade" '-'; then
          _auto_upgrade="1"
        else
          shift
        fi
        AUTO_UPGRADE="$_auto_upgrade"
        ;;
      --listen-v4)
        _listen_v4="1"
        Le_Listen_V4="$_listen_v4"
        ;;
      --listen-v6)
        _listen_v6="1"
        Le_Listen_V6="$_listen_v6"
        ;;
      --openssl-bin)
        _openssl_bin="$2"
        ACME_OPENSSL_BIN="$_openssl_bin"
        shift
        ;;
      --use-wget)
        _use_wget="1"
        ACME_USE_WGET="1"
        ;;
      *)
        _err "Unknown parameter : $1"
        return 1
        ;;
    esac

    shift 1
  done

  if [ "${_CMD}" != "install" ]; then
    __initHome
    if [ "$_log" ]; then
      if [ -z "$_logfile" ]; then
        _logfile="$DEFAULT_LOG_FILE"
      fi
    fi
    if [ "$_logfile" ]; then
      _saveaccountconf "LOG_FILE" "$_logfile"
      LOG_FILE="$_logfile"
    fi

    if [ "$_log_level" ]; then
      _saveaccountconf "LOG_LEVEL" "$_log_level"
      LOG_LEVEL="$_log_level"
    fi

    if [ "$_syslog" ]; then
      if _exists logger; then
        if [ "$_syslog" = "0" ]; then
          _clearaccountconf "SYS_LOG"
        else
          _saveaccountconf "SYS_LOG" "$_syslog"
        fi
        SYS_LOG="$_syslog"
      else
        _err "The 'logger' command is not found, can not enable syslog."
        _clearaccountconf "SYS_LOG"
        SYS_LOG=""
      fi
    fi

    _processAccountConf
  fi

  _debug2 LE_WORKING_DIR "$LE_WORKING_DIR"

  if [ "$DEBUG" ]; then
    version
    if [ "$_server" ]; then
      _debug "Using server: $_server"
    fi
  fi

  case "${_CMD}" in
    install) install "$_nocron" "$_confighome" ;;
    uninstall) uninstall "$_nocron" ;;
    upgrade) upgrade ;;
    issue)
      issue "$_webroot" "$_domain" "$_altdomains" "$_keylength" "$_cert_file" "$_key_file" "$_ca_file" "$_reloadcmd" "$_fullchain_file" "$_pre_hook" "$_post_hook" "$_renew_hook" "$_local_address"
      ;;
    deploy)
      deploy "$_domain" "$_deploy_hook" "$_ecc"
      ;;
    signcsr)
      signcsr "$_csr" "$_webroot"
      ;;
    showcsr)
      showcsr "$_csr" "$_domain"
      ;;
    installcert)
      installcert "$_domain" "$_cert_file" "$_key_file" "$_ca_file" "$_reloadcmd" "$_fullchain_file" "$_ecc"
      ;;
    renew)
      renew "$_domain" "$_ecc"
      ;;
    renewAll)
      renewAll "$_stopRenewOnError"
      ;;
    revoke)
      revoke "$_domain" "$_ecc"
      ;;
    remove)
      remove "$_domain" "$_ecc"
      ;;
    deactivate)
      deactivate "$_domain,$_altdomains"
      ;;
    registeraccount)
      registeraccount "$_accountkeylength"
      ;;
    updateaccount)
      updateaccount
      ;;
    list)
      list "$_listraw"
      ;;
    installcronjob) installcronjob "$_confighome" ;;
    uninstallcronjob) uninstallcronjob ;;
    cron) cron ;;
    toPkcs)
      toPkcs "$_domain" "$_password" "$_ecc"
      ;;
    toPkcs8)
      toPkcs8 "$_domain" "$_ecc"
      ;;
    createAccountKey)
      createAccountKey "$_accountkeylength"
      ;;
    createDomainKey)
      createDomainKey "$_domain" "$_keylength"
      ;;
    createCSR)
      createCSR "$_domain" "$_altdomains" "$_ecc"
      ;;

    *)
      if [ "$_CMD" ]; then
        _err "Invalid command: $_CMD"
      fi
      showhelp
      return 1
      ;;
  esac
  _ret="$?"
  if [ "$_ret" != "0" ]; then
    return $_ret
  fi

  if [ "${_CMD}" = "install" ]; then
    if [ "$_log" ]; then
      if [ -z "$LOG_FILE" ]; then
        LOG_FILE="$DEFAULT_LOG_FILE"
      fi
      _saveaccountconf "LOG_FILE" "$LOG_FILE"
    fi

    if [ "$_log_level" ]; then
      _saveaccountconf "LOG_LEVEL" "$_log_level"
    fi

    if [ "$_syslog" ]; then
      if _exists logger; then
        if [ "$_syslog" = "0" ]; then
          _clearaccountconf "SYS_LOG"
        else
          _saveaccountconf "SYS_LOG" "$_syslog"
        fi
      else
        _err "The 'logger' command is not found, can not enable syslog."
        _clearaccountconf "SYS_LOG"
        SYS_LOG=""
      fi
    fi

    _processAccountConf
  fi

}

if [ "$INSTALLONLINE" ]; then
  INSTALLONLINE=""
  _installOnline
  exit
fi

main() {
  [ -z "$1" ] && showhelp && return
  if _startswith "$1" '-'; then _process "$@"; else "$@"; fi
}

main "$@"