#!/bin/sh
#
# Copyright (c) 2003-2004 Silicon Graphics, Inc.  All Rights Reserved.
# 
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
# 
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
# for more details.
# 
# Post installation/upgrade script for PCP
#

prog=`basename $0`
status=1
trap "exit \$status" 0 1 2 15

echo "$prog: PCP for MacOSX Upgrade"

echo "$prog: Stopping PCP"
/Library/StartupItems/pcp/pcp stop

echo "$prog: Writing install log to /var/log/pcp_inst.log"

if [ ! -d $2 ]
then
    echo "$prog: Unable to open directory of new files ($2)"
    exit
fi

cd $2

if [ -f /usr/share/pcp/bin/idb ]
then
    if ./install-pcp -u /usr/share/pcp/bin/idb -l /var/log/pcp_inst.log idb
    then
	:
    else
	echo "$prog: Upgrade Failed"
	exit
    fi
else
    echo "$prog: Package detected previous install of pcp but /usr/share/pcp/bin/idb does not exist."
    echo "$prog: Attempting to remove existing files using new idb."
    if ./install-pcp -v -r -l /var/log/pcp_inst.log idb
    then
	if ./install-pcp -v -i -l /var/log/pcp_inst.log idb
	then
	    :
	else
	    echo "$prog: Install Failed"
	    exit
	fi
    else
	echo "$prog: Remove Failed"
	exit
    fi
fi

if [ -f /etc/pcp.conf ]
then
    # for all the configuration files we know about, try to keep 
    # any local modifications, and salt away file with a .orig
    # suffix for a subsequent upgrade
    #
    . /etc/pcp.conf
    for conf in \
	$PCP_PMCDCONF_PATH $PCP_PMCDOPTIONS_PATH $PCP_PMCDRCLOCAL_PATH \
	$PCP_PMIECONTROL_PATH $PCP_PMLOGGERCONTROL_PATH \
	$PCP_PMPROXYOPTIONS_PATH $PCP_PMWEBDOPTIONS_PATH
    do
	if [ -f $conf.pre -a -f $conf ]
	then
	    if cmp -s $conf.pre $conf
	    then
		cp $conf $conf.orig
		rm $conf.pre
	    else
		# restore local modifications ...
		cp $conf $conf.orig
		mv $conf.pre $conf
	    fi
	elif [ -f $conf ]
	then
	    cp $conf $conf.orig
	fi
    done
fi

# create the user/group account that PCP daemons will use
#
userid=432
groupid=432

if ! dscl . -list /Groups | grep -q '^pcp$' 
then
    dscl . -create /Groups/pcp
    dscl . -create /Groups/pcp PrimaryGroupID $groupid
    dscl . -create /Groups/pcp Password \*
fi

if ! dscl . -list /Users | grep -q '^pcp$' 
then
    dscl . -create /Users/pcp
    dscl . -create /Users/pcp UniqueID $userid
    dscl . -create /Users/pcp UserShell /usr/bin/false
    dscl . -create /Users/pcp RealName 'Performance Co-Pilot'
    dscl . -create /Users/pcp NFSHomeDirectory /var/lib/pcp
    dscl . -create /Users/pcp PrimaryGroupID $groupid
    dscl . -create /Users/pcp Password \*
    dscl . append /Groups/pcp GroupMembership pcp
fi

chown -R pcp:pcp /var/log/pcp/pmcd 2>/dev/null
chown -R pcp:pcp /var/log/pcp/pmlogger 2>/dev/null
chown -R pcp:pcp /var/log/pcp/pmie 2>/dev/null
chown -R pcp:pcp /var/log/pcp/pmwebd 2>/dev/null
chown -R pcp:pcp /var/log/pcp/pmproxy 2>/dev/null

status=0