qt-install-epel

#!/bin/bash
# Copyright (C) 2014 Eric Shubert <eric@datamatters.us>
#
# script to install/upgrade epel repository for a QMailToaster host
######################################################################
# Change Log
# 02/06/14 shubes - created (from qt-install-repoforge)
######################################################################

######################################################################
# Check to see which distro and arch to install
#
a1_check_whatami(){

. qt-whatami -s
rc=$?

if [ "$rc" != "0" ]; then
  qt-whatami
  echo "$me - your distro/version is not supported by QMailToaster, exiting."
  exit 1
else
  if [ "$DISTRO" != "CentOS" ]; then
    qt-whatami
    echo "$me - your distro is not supported by epel, exiting."
    exit 1
  fi
fi
}

######################################################################
# Figure out which version/release is the latest available
#
a2_determine_current_version(){

echo "$me $myver - getting version of the latest $PKGNAME ..."

epelurl=dl.fedoraproject.org/pub/epel/${OSVER%.*}/$(uname -i)
html_line=$(curl http://$epelurl/ 2>/dev/null | grep $PKGNAME)
if [ $? != "0" ]; then
  echo "$me - $PKGNAME not found at $epelurl/."
  exit 1
fi

pkgfile=${html_line#*\"}
pkgfile=${pkgfile%\"*}
tempname=${pkgfile%%.*}
release=${tempname##*-}
tempname=${tempname%-$release}
version=${tempname##*-}
}

######################################################################
# Install or update epel-release package
#
a5_install_update(){

if [ $rc == "0" ]; then
  echo "$me - $installed_pkg is installed, upgrading to $version-$release"
  yum -y update $PKGNAME
else
  echo "$me - $PKGNAME not installed, installing ..."
  b55_install_pkg
fi

epelfile=/etc/yum.repos.d/epel.repo
incl_clause="includepkgs=pdns-recursor"
grep -q ^$incl_clause $epelfile
if [ "$?" != "0" ]; then
  sed -i "/enabled=1/a $incl_clause" $epelfile
fi

echo "$me - upgrade complete"
}

######################################################################
# Install the epel-release package 'manually'
#
b55_install_pkg(){

# we need to put the rpm in a tempfile in case of web redirection
curl http://$epelurl/$pkgfile 2>/dev/null >$tempfile
rpm -ivh $tempfile
rc=$?

if [ "$rc" != "0" ]; then
  echo "$me - install failed, rc=$rc. Exiting."
  exit 1
fi
}

######################################################################
# main routine begins here
#
me=${0##*/}
myver=v1.0
PKGNAME=epel-release

# set a temp file for the working scratch. $$ is the current shell ID.
tempfile=$(tempfile 2>/dev/null) || tempfile=/tmp/$me.$$

# make sure the tempfile is deleted when we're done
trap "rm -f $tempfile" 0 1 2 5 15

a1_check_whatami

a2_determine_current_version

installed_pkg=$(rpm -q $PKGNAME)
rc=$?

if [ $rc == "0" ] \
      && [ "${installed_pkg%.*}" == "$PKGNAME-$version-$release" ]; then
  echo "$me - installed package $installed_pkg is the latest - nothing done."
else
  a5_install_update
fi

exit 0