Talk:Clamav:freshclam update

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#!/bin/bash

# clamcvdget
# routine created on 03-14-2013 15:00 
# this routine will update the clamav virus signature datafiles

######################################## VARIABLES FOR TESTING
# SET skipdownload TO 1 WILL SKIP DOWNLOADING OF NEW CVD FILES
# IF FILES NEED TO BE DOWNLOADED THEY WILL BE AUTOMATICALLY
# FOR TESTING PURPOSES 
  skipdownload="0"

# SET dovirustest TO 1 WILL CAUSE A SHORT CLAMSACN VIRUS 
# TEST TO DISPLAY SHOWING SUMMARY AND KNOWN VIRUS COUNT 
  doclamtest="1"
#SET showversion TO 1 TO DISPLAY VERSION OF CLAMD AND CLAMSCAN
  showversion="1"
#############################################################


####################### THESE VARIABLES MUST BE SET CORRECTLY
  downloadurl="db.us.clamav.net"
  file1="main.cvd"
  file2="daily.cvd"
  file3="bytecode.cvd"
  clamdir="/var/clamav"
  downloaddirectory=""
  downloaddirectory1='/var/clamav/download/1'
  downloaddirectory2='/var/clamav/download/2'
#############################################################

/usr/bin/renice 20 -p $$ > /dev/null


############################### begin of functions
#  FUNCTION TO COMPARE DOWNLOADED CVD FILES
function comparecvdfiles {
result="0"
if ! diff \
   "$downloaddirectory1/$file1" \
   "$downloaddirectory2/$file1" > /dev/null
   then
   return 0
fi
if ! diff \
   "$downloaddirectory1/$file2" \
   "$downloaddirectory2/$file2" > /dev/null
   then
   return 0
fi
if ! diff \
   "$downloaddirectory1/$file2" \
   "$downloaddirectory2/$file2" > /dev/null
   then
   return 0
fi
result="1"
}

# FUNCTION TO DOWNLOAD CVD FILES
function downloadcvdfiles {
   result="0"
   cd /tmp
   currentdir=$PWD
   if [ $currentdir != "/tmp" ]
      then
      return 0
   fi
   if [ $downloaddirectory == "" ] | [ $downloaddirectory == "/" ]
      then
      return 0
   fi
   mkdir -p  $downloaddirectory
   chmod 755 $downloaddirectory
   rm -f $downloaddirectory/* > /dev/null
   cd $downloaddirectory
   currentdir=$PWD
   if [ $currentdir == "/tmp" ] | [ $currentdir ==  "/" ]  | [ $currentdir  == "/root" ]
      then
      return 0
   fi
   wget -q $downloadurl/$file3
   wget -q $downloadurl/$file1
   wget -q $downloadurl/$file2
   echo "done with downloading"
   cd /tmp
   result="1"
}

#FUNCITON TO CHECK FOR EXISTENCE OF CVD FILES
function  dodownloadfilesexist {
   result="0"
   if [ ! -f "$downloaddirectory/$file1" ] | [ ! -f "$downloaddirectory/$file2" ] \
      | [ ! -f "$downloaddirectory/$file3" ]
      then
      return 0
      else
      result="1"
   fi
}


################################## end of functions


#TODAY=$(date +"%Y%m%d %T")
#echo "$TODAY started"  


if [ $skipdownload == "0" ]
then
   echo "downloding new clamav cvd files"
   downloaddirectory=$downloaddirectory1
   downloadcvdfiles
fi


# DOWNLOAD FIRST SET OF CVD FILES IF NOT EXIST
downloaddirectory=$downloaddirectory1
dodownloadfilesexist
if [ $result == "0" ]
   then
   downloadcvdfiles
fi
dodownloadfilesexist
if [ $result == "0" ]
   then
   sleep 90
   downloadcvdfiles
fi
dodownloadfilesexist
if [ $result == "0" ]
   then
   sleep 90
   downloadcvdfiles
fi
dodownloadfilesexist
if [ $result == "0" ]
   then
   echo "Update cvd files do not exist"
   echo "Cannot update Clamav"
   exit 0
fi

# DOWNLOAD SECOND SET OF CVD FILES IF NOT EXIST
downloaddirectory=$downloaddirectory2
dodownloadfilesexist
if [ $result == "0" ]
   then 
   downloadcvdfiles
fi
dodownloadfilesexist
if [ $result == "0" ]
   then
   sleep 90 
   downloadcvdfiles
fi
dodownloadfilesexist
if [ $result == "0" ]
   then 
   sleep 90
   downloadcvdfiles
fi
if [ $result == "0" ]
   then
   echo "Update cvd files do not exist"
   echo "Cannot update Clamav"
   exit 0
fi



comparecvdfiles
if [ $result == "0" ]
   then
   downloaddirectory=$downloaddirectory2
   dodownloadfilesexist
  if [ $result == "0" ]
      then
      downloadcvdfiles
   fi
  if [ $result == "0" ]
      then
      sleep 90
      downloadcvdfiles
   fi
   dodownloadfilesexist
   if [ $result == "0" ]
      then
      sleep 90
      downloadcvdfiles
   fi
   dodownloadfilesexist
   if [ $result == "0" ]
      then
      echo "Update cvd files do not exist"
      echo "Cannot update Clamav"
      exit 0
   fi
fi


comparecvdfiles
if [ $result == "0" ]
   then
   downloaddirectory=$downloaddirectory1
   dodownloadfilesexist
  if [ $result == "0" ]
      then
      downloadcvdfiles
   fi
  if [ $result == "0" ]
      then
      sleep 90
      downloadcvdfiles
   fi
   dodownloadfilesexist
   if [ $result == "0" ]
      then
      sleep 90
      downloadcvdfiles
   fi
   dodownloadfilesexist
   if [ $result == "0" ]
      then
      echo "Update cvd files do not exist"
      echo "Cannot update Clamav"
      exit 0
   fi
fi

comparecvdfiles
if [ $result == "0" ]
then
echo "Update files are not complete"
echo "Cannot update ClamAV"
exit 0
fi

echo "updating Clamav"
service clamd stop > /dev/null
cd $clamdir
rm  -f $clamdir/*.cvd 1> /dev/null 2> /dev/null
cp -p $downloaddirectory1/*.cvd $clamdir
service clamd start > /dev/null


# THE FOLLOWING LINE IS JUST A TEST TO SEE 
if [ $showversion == "1" ]
then
clamd -V
clamscan -V
fi

if [ $doclamtest == "1" ]  
then
echo "running clamscan test"
mkdir -p $clamdir/temp
clamscan $clamdir/temp
rm -rf $clamdir/temp
fi

#TODAY=$(date +"%Y%m%d %T")
#echo "$TODAY ended"

exit 0