notify/mail.sh

   1 #!/usr/bin/env sh
   2
   3 #Support local mail app
   4
   5 #MAIL_BIN="sendmail"
   6 #MAIL_FROM="yyyy@gmail.com"
   7 #MAIL_TO="yyyy@gmail.com"
   8 #MAIL_NOVALIDATE=""
   9 #MAIL_MSMTP_ACCOUNT=""
  10
  11 mail_send() {
  12   _subject="$1"
  13   _content="$2"
  14   _statusCode="$3" #0: success, 1: error 2($RENEW_SKIP): skipped
  15   _debug "_subject" "$_subject"
  16   _debug "_content" "$_content"
  17   _debug "_statusCode" "$_statusCode"
  18
  19   MAIL_NOVALIDATE="${MAIL_NOVALIDATE:-$(_readaccountconf_mutable MAIL_NOVALIDATE)}"
  20   if [ -n "$MAIL_NOVALIDATE" ]; then
  21     _saveaccountconf_mutable MAIL_NOVALIDATE 1
  22   else
  23     _clearaccountconf "MAIL_NOVALIDATE"
  24   fi
  25
  26   MAIL_BIN="${MAIL_BIN:-$(_readaccountconf_mutable MAIL_BIN)}"
  27   if [ -n "$MAIL_BIN" ] && ! _exists "$MAIL_BIN"; then
  28     _err "It seems that the command $MAIL_BIN is not in path."
  29     return 1
  30   fi
  31   _MAIL_BIN=$(_mail_bin)
  32   if [ -n "$MAIL_BIN" ]; then
  33     _saveaccountconf_mutable MAIL_BIN "$MAIL_BIN"
  34   else
  35     _clearaccountconf "MAIL_BIN"
  36   fi
  37
  38   MAIL_FROM="${MAIL_FROM:-$(_readaccountconf_mutable MAIL_FROM)}"
  39   if [ -n "$MAIL_FROM" ]; then
  40     if ! _mail_valid "$MAIL_FROM"; then
  41       _err "It seems that the MAIL_FROM=$MAIL_FROM is not a valid email address."
  42       return 1
  43     fi
  44
  45     _saveaccountconf_mutable MAIL_FROM "$MAIL_FROM"
  46   fi
  47
  48   MAIL_TO="${MAIL_TO:-$(_readaccountconf_mutable MAIL_TO)}"
  49   if [ -n "$MAIL_TO" ]; then
  50     if ! _mail_valid "$MAIL_TO"; then
  51       _err "It seems that the MAIL_TO=$MAIL_TO is not a valid email address."
  52       return 1
  53     fi
  54
  55     _saveaccountconf_mutable MAIL_TO "$MAIL_TO"
  56   else
  57     MAIL_TO="$(_readaccountconf ACCOUNT_EMAIL)"
  58     if [ -z "$MAIL_TO" ]; then
  59       _err "It seems that account email is empty."
  60       return 1
  61     fi
  62   fi
  63
  64   contenttype="text/plain; charset=utf-8"
  65   subject="=?UTF-8?B?$(printf -- "%b" "$_subject" | _base64)?="
  66   result=$({ _mail_body | eval "$(_mail_cmnd)"; } 2>&1)
  67
  68   # shellcheck disable=SC2181
  69   if [ $? -ne 0 ]; then
  70     _debug "mail send error."
  71     _err "$result"
  72     return 1
  73   fi
  74
  75   _debug "mail send success."
  76   return 0
  77 }
  78
  79 _mail_bin() {
  80   _MAIL_BIN=""
  81
  82   for b in $MAIL_BIN sendmail ssmtp mutt mail msmtp; do
  83     if _exists "$b"; then
  84       _MAIL_BIN="$b"
  85       break
  86     fi
  87   done
  88
  89   if [ -z "$_MAIL_BIN" ]; then
  90     _err "Please install sendmail, ssmtp, mutt, mail or msmtp first."
  91     return 1
  92   fi
  93
  94   echo "$_MAIL_BIN"
  95 }
  96
  97 _mail_cmnd() {
  98   _MAIL_ARGS=""
  99
 100   case $(basename "$_MAIL_BIN") in
 101   sendmail)
 102     if [ -n "$MAIL_FROM" ]; then
 103       _MAIL_ARGS="-f '$MAIL_FROM'"
 104     fi
 105     ;;
 106   mutt | mail)
 107     _MAIL_ARGS="-s '$_subject'"
 108     ;;
 109   msmtp)
 110     if [ -n "$MAIL_FROM" ]; then
 111       _MAIL_ARGS="-f '$MAIL_FROM'"
 112     fi
 113
 114     if [ -n "$MAIL_MSMTP_ACCOUNT" ]; then
 115       _MAIL_ARGS="$_MAIL_ARGS -a '$MAIL_MSMTP_ACCOUNT'"
 116     fi
 117     ;;
 118   *) ;;
 119   esac
 120
 121   echo "'$_MAIL_BIN' $_MAIL_ARGS '$MAIL_TO'"
 122 }
 123
 124 _mail_body() {
 125   case $(basename "$_MAIL_BIN") in
 126   sendmail | ssmtp | msmtp)
 127     if [ -n "$MAIL_FROM" ]; then
 128       echo "From: $MAIL_FROM"
 129     fi
 130
 131     echo "To: $MAIL_TO"
 132     echo "Subject: $subject"
 133     echo "Content-Type: $contenttype"
 134     echo "MIME-Version: 1.0"
 135     echo
 136     ;;
 137   esac
 138
 139   echo "$_content"
 140 }
 141
 142 _mail_valid() {
 143   [ -n "$MAIL_NOVALIDATE" ] || _contains "$1" "@"
 144 }