Este script atualiza o seu /etc/hosts e /etc/hosts.deny baseado na blacklist localizada em: http://someonewhocares.org/hosts/
Desta forma você irá bloquear diversos sites maliciosos, inclusive aqueles da oix.net.

• Download synchosts.sh
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Versão 2 - Enviado por Fernando em 23/11/2013

Changelog: Implementação do mesmo script em Python 3.

Download synchosts.py

Esconder código-fonte

#!/bin/sh
#
# This script was made to update your /etc/hosts and /etc/hosts.deny with a blacklist located in http://someonewhocares.org/hosts/
# Written by phoemur - apr/2013

#############
# Variables #
#############

TMP_DIR=/tmp
ROOT_UID=0 #Only users with $UID 0 have root privileges.
E_NOTROOT=87 #Non-root exit error.
E_INVALID=88 #Invalid file exit
E_ARGUMENTS=89 # Invalid arguments exit
WGET=`which wget`
SED=`which sed`

HOSTS_URL=http://someonewhocares.org/hosts/hosts #File already in txt format

# If possible, log events in /var/log/messages:
if [ -f /var/run/syslogd.pid -a -x `which logger` ]; then
  LOGGER=`which logger`
else # output to stdout/stderr:
  LOGGER=/bin/cat
fi

######################
# To be or not to be #
######################

if [ "$UID" -ne "$ROOT_UID" ]; then
  echo "Must be root to run this script."
  exit $E_NOTROOT
fi

#############
# Functions #
#############

get_hosts() {
if [ -f "$TMP_DIR/hosts" ]; then
  mv $TMP_DIR/hosts $TMP_DIR/hosts.oldtmp
fi

$WGET -c $HOSTS_URL -O $TMP_DIR/hosts
}

update_etc() {
  diff -q $TMP_DIR/hosts /etc/hosts
  if [ "$?" -eq 0 ]; then
    echo "It is not necessary to update your hosts file" | $LOGGER
    echo "Your hosts are already up-to-date!!!"
  else
    grep -q ^127.0.0.1 $TMP_DIR/hosts > /dev/null # Validating the downloaded file
    if [ ! $? ]; then
      echo "The hosts file downloaded is invalid"
      exit $E_INVALID
    else # Upgrading
      cp /etc/hosts /etc/hosts.old
      cp $TMP_DIR/hosts /etc/hosts
      cp /etc/hosts.deny /etc/hosts.deny.old
      $SED 's/^127\.0\.0\.1/ALL:/g;/localhost/d' $TMP_DIR/hosts > /etc/hosts.deny
      echo "There is new version of hosts avaiable which was already upgraded" | $LOGGER
      $SED -n '/Last.updated/{s/^#.*updated: \(.*$\)/\1/p}' $TMP_DIR/hosts | $LOGGER
      echo "Hosts Upgraded Successfully!!!"
    fi
  fi
}

usage() {
cat << EOF

This script updates your /etc/hosts and your
/etc/hosts.deny based in the blacklist located
here: http://someonewhocares.org/hosts/hosts

Options: --upgrade (Updates your hosts)
    --update  (Only downloads the new file for inspection.
          Location: /tmp/hosts)
    --help    (Displays this help)

EOF
}

############
### MAIN ###
############

case "$1" in
'--upgrade')
  get_hosts
  update_etc
  exit 0
  ;;
  'upgrade')
  get_hosts
  update_etc
  exit 0
  ;;
'--update')
  get_hosts
  echo "Your hosts file is located at /tmp for inspection"
  exit 0
  ;;
  'update')
  get_hosts
  echo "Your hosts file is located at /tmp for inspection"
  exit 0
  ;;
'--help')
  usage
  exit 0
  ;;
  'help')
  usage
  exit 0
  ;;
*)
  usage
  exit $E_ARGUMENTS
esac

# End of script

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