#!/bin/sh
# IBM(c) 2007 EPL license http://www.eclipse.org/legal/epl-v10.html

#-------------------------------------------------------------------------------
#=head1  syslog 
#=head2  syslog command that setsup the syslogd for MS, SV and nodes.
#        On MS, it makes sure all the xCAT messages goes to /var/log/messages file,
#               it enables syslogd receving logs from remote machies. 
#        On MS, it sends all the messages to MS,
#               it enables syslogd receving logs from remote nodes. 
#        On node,  it sends all the messages its master.  
#        Input: none, it takes the following environment variables: 
#           OSVER: possible values are sles10, fedora8, redhat5, aix etc.   
#=cut
#-------------------------------------------------------------------------------

master=$MASTER
conf_file="/etc/syslog.conf"
sysconfig="/etc/sysconfig/syslog"
init="/etc/init.d/syslog"
ng=0
isSN=0
isLinux=1
isRsyslog=0
isC3=0

config_Rsyslog_C3()
{
  isReceiving=0
  isLocal=$1

  if [ -f /etc/xCATMN ] || [ -f /etc/xCATSN ]
  then 
    isReceiving=1
  fi

  if [ ! -f $2.XCATORIG ]; then
    cp -f $2 $2.XCATORIG
  fi

  grep "xCAT settings" $conf_file
  if [ $? -gt 0 ]; then
  echo "# xCAT settings" >> $2
    #enable to receive remote logging
    if [ $isReceiving -eq 1 ]; then
      sed -i 's/^\#\(\s\)*\$ModLoad\(\s\)*imudp.so/\$ModLoad imudp.so/' $2
      sed -i 's/^\#\(\s\)*\$UDPServerRun/\$UDPServerRun/' $2
    fi

    #enable to send the logging to master
    if [ $isLocal -eq 1 ]; then
       touch  /var/log/messages  
    else
      sed -i 's/^\(\*\..*\)/\#\1/' $2  
      sed -i 's/^\(news\|local7\|mail\|authpriv\|cron\|kern\)\./\#\1\./' $2  
      echo "*.* @$master" >> $2
    fi 
  fi
}

#echo "NTYPE=$NTYPE,OSVER=$OSVER,OSTYPE=$OSTYPE"

if [[ $NTYPE = service ]]; then 
  isSN=1
fi

if [[ $OSTYPE = linux* ]]; then
  if [[ $OSVER = fedora* ]] || [[ -f /etc/fedora-release ]]; then
    if [ -e /etc/rsyslog.conf ]; then
      conf_file="/etc/rsyslog.conf"
      sysconfig="/etc/sysconfig/rsyslog"
      init="/etc/init.d/rsyslog"
      isRsyslog=1
    fi
  else 
    if [[ $OSVER = sles* ]] || [[ $OSVER = suse* ]] || [[ -f /etc/SuSE-release ]]; then
      #find out which syslog is used for SLES, syslog or syslog-ng
      result=`grep "^SYSLOG_DAEMON=" $sysconfig 2>&1`
      if [[ $result = *syslog-ng* ]]; then
        conf_file="/etc/syslog-ng/syslog-ng.conf"
        ng=1
      fi
    fi
  fi 
else
  sysconfig=  #AIX does not have this file
  isLinux=0;
fi

#echo "isSN=$isSN, isLinux=$isLinux, ng=$ng"
#echo "sysconfig=$sysconfig, confgile=$conf_file"



#handle sysconfig file to make remote loggling possible 
if [ $isLinux -eq 1 ] && [ -a $sysconfig ]; then 
  if [[ ! -f "$sysconfig.XCATORIG" ]]; then
    cp -f $sysconfig $sysconfig.XCATORIG
  fi

  #check if it is ryslog version 3, it has totally different settings in /etc/syslog.cong
  if [ $isRsyslog -eq 1 ]; then
    grep "SYSLOGD_OPTIONS" $sysconfig | grep -e "[\-c 3|\-c3]"
    if [ $? -eq 0 ]; then
      isC3=1
    fi
  fi
  
  #no need to change anything for rsyslog version 3 for /etc/sysconf/rsyslog
  if [ $isC3 -eq 0 ]; then 
    if [ -f /etc/xCATMN ]; then
      #on MN: make the syslogd be able to receive remote logs 
      awk  '{if($0 ~ /^SYSLOGD_OPTIONS=/) {
            if ($0 !~ /-r/) {sub(/\"$/, " -r\"", $0)}
            if (($0 !~ /-m0/) && ($0 !~/-m 0/)) { sub(/\"$/, " -m 0\"", $0)}
            print $0}
          else { print $0}}'  $sysconfig > $sysconfig.tmp 
    else
      if [ $isSN -eq 1 ]; then
        #on SN: make the syslog be able to receive and forward remote logs
        awk '{if($0 ~ /^SYSLOGD_OPTIONS=/) {
              if ($0 !~ /-r/) {sub(/\"$/, " -r\"", $0)}
              if ($0 !~ /-h/) {sub(/\"$/, " -h\"", $0)}
              if (($0 !~ /-m0/) && ($0 !~/-m 0/)) { sub(/\"$/, " -m 0\"", $0)}
              print $0}
            else { print $0}}'  $sysconfig > $sysconfig.tmp 
      else
        ##turn off the time marker on all 
        awk '{if($0 ~ /^SYSLOGD_OPTIONS=/) {
              if (($0 !~ /-m0/) && ($0 !~/-m 0/)) { sub(/\"$/, " -m 0\"", $0)}
              print $0}
            else {print $0}}' $sysconfig > $sysconfig.tmp 
      fi
    fi
    mv -f $sysconfig.tmp $sysconfig   
  fi
fi  


#syslog-ng has different way of enabling log forwarding
if [ $ng -eq 1 -a $isSN -eq 1 ]; then
  if [ ! -f $conf_file.XCATORIG ];  then
    cp -f $conf_file $conf_file.XCATORIG
  fi
  sed -i 's/#udp(ip("0.0.0.0/udp(ip("0.0.0.0/' $conf_file
fi



#now handling where the logs go
goLocal=0;
if [ -f /etc/xCATMN ]; then
  goLocal=1
else 
  if [ $isSN -eq 1 ]; then
     if [[ $SVLOGLOCAL -eq 1 ]]; then
       goLocal=1  
     fi
  fi
fi

if [ $isC3 -eq 1 ]; then 
  config_Rsyslog_C3 $goLocal $conf_file
else
  if [ $goLocal -eq 1 ]; then
    #making sure all the messages goes to /var/log/messages
    touch  /var/log/messages 
    if [ $ng -eq 0 ]; then
      if [ ! -f $conf_file.XCATORIG ]; then
        cp -f $conf_file $conf_file.XCATORIG
      fi

      grep "xCAT settings" $conf_file
      if [ $? -gt 0 ]; then
        if [ $isLinux -eq 0 ]; then # aix
          echo "# xCAT settings" >> $conf_file
          echo "*.debug   /var/log/messages  rotate 1024K files 5" >> $conf_file
        fi
      fi
    fi
  else 
    #now make the syslogd fowarding the messages to the the master
    if [ $ng -eq 1 ]; then
      if [ ! -f $conf_file.XCATORIG ]; then
        cp -f $conf_file $conf_file.XCATORIG
      fi
      grep "xCAT settings" $conf_file
      if [ $? -gt 0 ]; then
        echo "# xCAT settings" >> $conf_file
        echo "destination loghost { udp(\"$master\"); };" >> $conf_file
        echo 'log { source(src); destination(loghost); };' >> $conf_file
      fi
    else 
      if [ -f $conf_file.XCATORIG ]; then 
        rm -f $conf_file 
      else 
        mv -f $conf_file $conf_file.XCATORIG
      fi
      echo "# xCAT settings" > $conf_file
      if [ $isLinux -eq 0 ]; then
        echo "*.debug @$master" >> $conf_file
      else
        echo "*.* @$master" >> $conf_file
      fi
    fi
  fi
fi

#restart the syslog daemon to take the new conf file settings
if [ $isLinux -eq 0 ]; then
  refresh -s syslogd
else 
  $init restart
fi

#keep a record
logger -t xcat "Install: syslog setup"
exit 0