#!/usr/bin/env bash

# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy
# of the License at http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software distributed
# under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
# CONDITIONS OF ANY KIND, either express or implied. See the License for the
# specific language governing permissions and limitations under the License.
CHECK_ID_extra774="7.74"
CHECK_TITLE_extra774="[extra774] Check if user have unused console login"
CHECK_SCORED_extra774="NOT_SCORED"
CHECK_TYPE_extra774="EXTRA"
CHECK_ASFF_RESOURCE_TYPE_extra774="AwsIamUser"
CHECK_ALTERNATE_check774="extra774"

extra774(){
  MAX_DAYS=-30
  LIST_USERS_WITH_PASSWORD_ENABLED=$(cat $TEMP_REPORT_FILE|awk -F, '{ print $1,$4,$5 }' |grep true | awk '{ print $1 }')

  for i in $LIST_USERS_WITH_PASSWORD_ENABLED; do
    user=$(cat $TEMP_REPORT_FILE|awk -F, '{ print $1,$5 }' |grep "^$i " |awk '{ print $1 }')
    last_login_date=$(cat $TEMP_REPORT_FILE|awk -F, '{ print $1,$5 }' |grep "^$i " |awk '{ print $2 }')

    # If the user has never logged into the console, their last login date is 'no_information'. See:
    # https://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_getting-report.html#id_credentials_understanding_the_report_format
    if [[ "${last_login_date}" == "no_information" ]]; then
      user_created_date=$(cat $TEMP_REPORT_FILE|awk -F, '{ print $1,$3 }' |grep "^$i " |awk '{ print $2 }')
      days_since_user_created=$(how_many_days_from_today ${user_created_date%T*})
      if [ "$days_since_user_created" -lt "$MAX_DAYS" ];then
        textFail "User $user has never used console login since they were created over ${MAX_DAYS#-} days ago"
      else
        textInfo "User $user has not used console login since they were created"
      fi
    else
      days_not_in_use=$(how_many_days_from_today ${last_login_date%T*})
      if [ "$days_not_in_use" -lt "$MAX_DAYS" ];then
        textFail "User $user has not used console login for more than ${MAX_DAYS#-} days"
      else
        textPass "User $user has used console login in the past ${MAX_DAYS#-} days"
      fi
    fi
  done
}