installer_samagent.sh

#!/bin/bash
# ======================================================================
#
# LINUX INSTALLER :: UNIBE SAM AGENT
#
# License: GNU GPL 3.0
#
# ----------------------------------------------------------------------
# 2024-04-19  v0.1  <axel.hahn@unibe.ch>
# 2024-05-22  v0.2  <axel.hahn@unibe.ch>  handle deb file directly
# ======================================================================

_version="0.2"

# ----------------------------------------------------------------------
# FUNCTIONS
# ----------------------------------------------------------------------

# show headline for better readability
# param  string  text to show
function h2(){
    echo
    echo
    echo -e ">>>>>>>>>>| $*"
}

# ----------------------------------------------------------------------
# MAIN
# ----------------------------------------------------------------------

echo "______________________________________________________________________

  I N S T A L L E R  *  SAM AGENT                                v$_version

  Institute for Medical Education
______________________________________________________________________
"

h2 "Read config"
. "$( dirname "$0" )/config.sh" || exit 1

if [ -z "$SITENAME" ]; then
    echo "ERROR: missing SITENAME."
    echo "See $URLSITENAMNE"
    echo "to get the sitename for your department."
    echo "Put it into the file config.sh behind SITENAME=..."
    exit 1
fi

if [ -z "$DEBFILE" ]; then
    echo "Source file: $SOURCEZIP"
    ls -l "$SOURCEZIP" || exit 1

    h2 "Detect DEB package for ${PLATFORM} from $SOURCEZIP ..."
    DEBFILE=$( unzip -l "$SOURCEZIP" "SAM Agent/*${PLATFORM}.deb" | grep -v "/._" | grep "${PLATFORM}" | rev | cut -f 1,2 -d " " | rev )
    echo "Found debian file: $DEBFILE"


    test -z "$DEBFILE" && echo "Debian Paket nicht gefunden. Paket korrupt oder Skript findet es nicht."
    test -z "$DEBFILE" && exit 2
    echo "OK"
    echo
    test -d "$EXTRACTDIR" || mkdir "$EXTRACTDIR"
    cd "$EXTRACTDIR" || exit 3

    echo "Switched to workdir to extract data:"
    pwd


    h2 "Extracting $DEBFILE from $SOURCEZIP ..."
    unzip -o "$SOURCEZIP" -d . "$DEBFILE" || exit 4
    echo "Result:"
else
    test -d "$EXTRACTDIR" || mkdir "$EXTRACTDIR"
    cd "$EXTRACTDIR" || exit 3
fi

ls -l "$DEBFILE" || exit 5


h2 "Extracting $DEBFILE to $( pwd ) ..."
ar x "$DEBFILE" 
ls -l


h2 "Extracting control.tar.gz ..."
ls -l "control.tar.gz" || exit 4
tar -xzf "control.tar.gz"


h2 "Extracting data.tar.gz ..."
ls -l "data.tar.gz" || exit 5
tar -xzf "data.tar.gz"

subdirname=$( ls opt | tr -d '/' )
echo "Found subdir: opt/$subdirname"


h2 "Get version ..."
PKGVERSION=$( grep "^Version: " "control" 2>/dev/null | cut -f 2- -d " " )
SWVERSION=$( grep "^Version: " "$INSTALLDIR/$subdirname/control" | cut -f 2- -d " " )
echo "To install: $PKGVERSION"
echo "Installed : $SWVERSION"
if [ "$PKGVERSION" = "$SWVERSION" ]; then
    echo
    echo "SKIP: This version is installed already"
else


    h2 "Get package name ..."
    PKGNAME=$( grep "^Package: " "control" | cut -f 2- -d " " )
    echo "Found: $PKGNAME"


    h2 "Patching SITENAME --> $SITENAME ..."
    ls -l opt/$subdirname/snowagent.config || exit 6
    cp -pf opt/$subdirname/snowagent.config opt/$subdirname/snowagent.config__orig
    sed -i "s#<SiteName>.*</SiteName>#<SiteName>$SITENAME</SiteName>#" opt/$subdirname/snowagent.config
    diff opt/$subdirname/snowagent.config__orig opt/$subdirname/snowagent.config
   
    h2 "Put files to opt ..."
    test -d "$INSTALLDIR/$subdirname" && ( echo "Removing $INSTALLDIR/$subdirname"; sudo rm -rf "$INSTALLDIR/$subdirname" )
    echo "Copy opt/$subdirname to $INSTALLDIR ..."
    sudo cp -r "opt/$subdirname" "$INSTALLDIR" || exit 6
    sudo cp "control" "$INSTALLDIR/$subdirname" || exit 6
    echo
    echo "Result"
    sudo find $INSTALLDIR/$subdirname

    h2 "Run debian scripts ..."
    for myscript in preinst postinst # prerm postrm
    do
        echo "----- Executing '$myscript $PKGNAME'"
        sudo ./$myscript "$PKGNAME" || ( echo ; read -p "--> Exitcode was non zero. Press RETURN to continue or Ctrl+C to abort" )
        echo
    done

fi

h2 "Cleanup ..."
echo "Deleting workdir $EXTRACTDIR ..."
rm -rf "$EXTRACTDIR"
echo
echo "Done."

# ----------------------------------------------------------------------