Short script to install/update Metasploit on Void Linux

msfvupdate

#!/bin/sh

# root check
if [ `id -u` != "0" ]; then
       echo "This should be run as root."
       exit
fi

# Dependency check for curl and rsync
missing=0
for dep in rsync curl; do
       if [ ! -x "$(which $dep 2>/dev/null)" ]; then
               echo "Missing $dep"
               missing=1
       fi
done

if [ $missing -eq 1 ]; then
       exit
fi


# Arch check for proper file download
if [ "$(uname -m)" = "x86_64" ] || [ "$(uname -m)" = "amd64" ]; then
       arch=amd64
elif [ "$(uname -m)" = "x86" ] || [ "$(uname -m)" = "i386" ] || [ "$(uname -m)" = "i686" ]; then
       arch=i386
elif [ "$(uname -m)" = "arm64" ]; then
       arch=arm64
elif [ "$(uname -m)" = "armhf" ]; then
       arch=armhf
else
       echo "Your architecture is currently not supported."
       exit
fi

VersionFile="/opt/metasploit-framework/msfversion.info"

if [ -r "$VersionFile" ]; then
	CurrentVersion="$(cat $VersionFile)"  # the version currently installed on the system, recorded in /opt/metasploit-framework/msfversion.info
fi

Repo="http://downloads.metasploit.com/data/releases/metasploit-framework/apt"   # the base location of the repo
Packages="$Repo/dists/sid/main/binary-$arch/Packages"   # the location of the package to be downloaded based on architecture


# Get the latest version of metasploit
echo -n "Finding latest version of Debian package..."
Filename=$(curl -sL $Packages | egrep "Filename" | cut -f2 -d\ )        # the .deb file to be downloaded
Date=$(date +%Y%m%d)    # today's date for version recording
Version=$(curl -sL $Packages | egrep "Version" | cut -f2 -d\ )  # full version number of newest metasploit
VerNum=$(echo $Version | cut -f3 -d. | cut -f2 -d+)     # shortened version number of newest metasploit (just the date in %Y%m%d%H%M%S format)
echo "OK."

echo "Latest version is $VerNum"

if [ -n "$CurrentVersion" ]; then
       # Compare the current version installed to the latest version available
       if [ $CurrentVersion \< $VerNum ]; then
              echo "There is a newer version of the metasploit available."
       else
              echo "You have the latest version of metasploit."
              exit
       fi
fi

# Setup the /tmp/tmp.* workspace
echo -n "Setting up temporary working space..."
TmpDir=$(mktemp -d)
cd "$TmpDir"
echo "OK."

# Download the newest version of metasploit-framework
echo -n "Fetching Debian package..."
curl -sL -o msf.deb "$Repo/$Filename"
echo "OK."

# extract the .deb
echo -n "Extracting contents..."
ar x msf.deb
tar zxf data.tar.gz
echo "OK."

# Kill old version
if [ -e /opt/metasploit-framework ]; then
    echo -n "Removing old version..."
    rm -r /opt/metasploit-framework
    echo "OK."
fi

# Move the files into /opt/metasploit-framework
echo -n "Moving files into place..."
mv opt/metasploit-framework/ /opt/metasploit-framework
echo "OK."

# Replace the update script
echo -n "Replacing metasploit's update script..."
cp $(which $0) /opt/metasploit-framework/bin/msfupdate
echo "OK."

# Remove the /tmp/tmp.* folder and contents
echo -n "Cleaning up temporary workspace..."
cd /
rm -rf "$TmpDir"
echo "OK."

# Put msfconsole in the path
echo -n "Making sure metasploit is in the path..."
cat <<'END' >/etc/bash/bashrc.d/metasploit.sh
PATH=$PATH:/opt/metasploit-framework/bin; export PATH
END
echo "OK."

echo -n "Removing packaged msfupdate."
rm /opt/metasploit-framework/bin/msfupdate
echo "OK."

# Update the currently-installed metasploit-framework version in /opt/metasploit-framework/msfversion.info
echo -n "Recording current metasploit version..."
echo $VerNum > "$VersionFile"
echo "OK."