#!/bin/bash
<<HELP
This script reports updates available for the machine and 
specific updates if requested such as kernel and glibc 

PKGS can be set server side in clientlocal.cfg:
RPMUPDATES:ssh kernel glibc

JCK 20101101
HELP

scriptVersion='0.6'
scriptName=$(basename $0)
# set default packages
PKGS="kernel glibc openssh"
COLOR="green"
STATUS="updates"
NL="
"
DIV='<hr align="left" width="50%">'
scriptInfo="Script: ${scriptName}${NL}Version: ${scriptVersion}"
header="RPM Package Update Summary${NL}"

LOGFETCH=${BBTMP}/logfetch.$(uname -n).cfg
if [ -f ${LOGFETCH} ]
then
#    grep "^RPMUPDATES:" ${LOGFETCH} | cut -d":" -f2 \
#                                | while read NEW_DEF
#                                  do
#                                      "$NEW_DEF"
#                                  done
    PKGS="$(grep "^RPMUPDATES:" ${LOGFETCH} | sed s/RPMUPDATES://)"
fi
RPMTMP=$(mktemp)

#### get useful info
# nodename
name=$(uname -n)
# arch: i386, i586, i68g, x86_64
arch=$(uname -m)

# linux?
os=$(uname -s)
INFO="OS = ${os}
node = ${name} (${MACHINE})
arch = ${arch}"

if [[ 'Linux' == "${os}" ]]
 then
   release=$(cat /etc/redhat-release)
   set ${release}
   distro="$1"
   version="$3"
   if [[ 'release' == "${version}" ]]
    then
      version="$4"
    fi
   full=$(uname -a)
   INFO="${INFO}
distro = ${distro}
version = ${version}
full = ${full}"
 fi
INFO="${INFO}${NL}${DIV}${NL}"

### now get on with checking for critical updates

yum list updates | grep -v '^Last metadata' | grep "^.*\." > ${RPMTMP}
ERR=''
UPD=''
cnt=$(cat ${RPMTMP} | wc -l)
if ((0 < cnt))
 then
   for PKG in ${PKGS}
    do
      if [[ $(grep -c "^${PKG}\." ${RPMTMP}) -eq '1' ]]
       then
         ERR="${ERR} &yellow ${PKG} needs to be updated:${NL}"
         ERR="${ERR} Have:      $(rpm -q ${PKG} | sort -n | tail -n 1)${NL}"
         ERR="${ERR} Available: $(grep "^${PKG}\." ${RPMTMP} | awk '{ FS = " " } ; { print "PKG-"$2 }' | sed "s/PKG/${PKG}/")${NL}"
         ERR="${ERR}${NL}${NL}"
         COLOR="yellow"
       fi
    done
   UPD="Available Updates:${NL}$(cat ${RPMTMP})${NL}${DIV}${NL}"

   if [[ 'X' != "X${ERR}" ]]
    then
      ERR="${ERR}${DIV}${NL}"
    fi
 fi

cnt=

MSG="$(date) - ${header}${ERR}${INFO}${UPD}${scriptInfo}"

rm ${RPMTMP}

${BB} ${BBDISP} "status ${MACHINE}.${STATUS} ${COLOR} ${MSG}"

exit 0