keys4user.sh

#!/bin/bash
SSH_DIR=$(getent passwd $1 | cut -d: -f6)/.ssh
KEY_LOC=$SSH_DIR/keyLocation
CACHE=$KEY_LOC.cache
AUTH_KEYS=""

if [ -e "$KEY_LOC" ]
then
  while read URL
    do
    if [ ! -z "$URL" ]
    then
      KEY=$(curl -sf "$URL")
      CURL_EXIT_STATUS=$?
      if [ $CURL_EXIT_STATUS != 0 ]
      then
        cat $CACHE
        exit $?
      fi
      AUTH_KEYS+=$(curl -sf "$URL")$'\n'
    fi
  done <$KEY_LOC
fi

if [ ! -z "$AUTH_KEYS" ]
then
  printf "$AUTH_KEYS" > "$CACHE"
  printf "$AUTH_KEYS"
fi