#! /bin/sh

API_URL="$(grep "API_URL=" /usr/local/bin/sendtelegram.config | cut -d= -f2)"
SILENCE="$(grep "SILENCE=" /usr/local/bin/sendtelegram.config | cut -d= -f2)"
CHAT_ID="$(grep "CHAT_ID=" /usr/local/bin/sendtelegram.config | cut -d= -f2)"
THRD_ID="$(grep "THRD_ID=" /usr/local/bin/sendtelegram.config | cut -d= -f2)"
TXT_MSG="[Authorization] $(cat /etc/hostname): ${USER}"

SESSION=$(who | grep "${USER}")
if [ -n "${SESSION}" ]; then
TXT_MSG=$(cat <<-END
${TXT_MSG}
--- GDE/SSH:
${SESSION}
END
)
fi

SESSION=$(lsof -a -i -u "${USER}" -sTCP:ESTABLISHED | grep 'vnc' \
        | awk '{print $3,$9,$10}')
if [ -n "${SESSION}" ]; then
TXT_MSG=$(cat <<-END
${TXT_MSG}
--- VNC:
${SESSION}
END
)
fi

SESSION=$(ps -ef -u "${USER}" | grep '[s]shd:.*@notty' \
        | awk '{$2=$3=$4=$6=$7=""; print $0}')
if [ -n "${SESSION}" ]; then
TXT_MSG=$(cat <<-END
${TXT_MSG}
--- SFTP:
${SESSION}
END
)
fi

(
  if [ -z "${THRD_ID}" ]; then
    curl -s -o /dev/null -X POST \
         -d chat_id="${CHAT_ID}" \
         -d text="${TXT_MSG}" \
         -d disable_notification="${SILENCE}" \
         "${API_URL}"
  else
    curl -s -o /dev/null -X POST \
         -d chat_id="${CHAT_ID}" \
         -d text="$TXT_MSG" \
         -d disable_notification="${SILENCE}" \
         -d message_thread_id="$THRD_ID" \
         "${API_URL}"
  fi
)