# This script creates the backout package for a patch package
#
# directory format options.
#
# @(#) postinstall 1.13 01/01/12 SMI
#
# Copyright (c) 1995 by Sun Microsystems, Inc.
# All rights reserved
#

# Description:
#       Set the TYPE parameter for the remote file
#
# Parameters:
#       none
#
# Globals set:
#	TYPE

set_TYPE_parameter () {
	if [ ${PATCH_UNDO_ARCHIVE:?????} = "/dev" ]; then
		# handle device specific stuff
		TYPE="removable"
	else
		TYPE="filesystem"
	fi
}

#
# Description:
#       Build the remote file that points to the backout data
#
# Parameters:
#       $1:	the un/compressed undo archive
#
# Globals set:
#	UNDO, STATE

build_remote_file () {
	remote_path=$PKGSAV/$SUNW_PATCHID/remote
	set_TYPE_parameter
	STATE="active"

	if [ $1 = "undo" ]; then
		UNDO="undo"
	else
		UNDO="undo.Z"
	fi

	cat > $remote_path << EOF
# Backout data stored remotely
TYPE=$TYPE
FIND_AT=$ARCHIVE_DIR/$UNDO
STATE=$STATE
EOF
}

PATH=/usr/sadm/bin:$PATH

if [ "$PKG_INSTALL_ROOT" = "/" ]; then
	PKG_INSTALL_ROOT=""
fi

if [ -n "$PATCH_BUILD_DIR" -a -d "$PATCH_BUILD_DIR" ]; then
	BUILD_DIR="$PATCH_BUILD_DIR/$SUNW_PATCHID.$PKGINST"
else
	BUILD_DIR="$PKG_INSTALL_ROOT/var/tmp/$SUNW_PATCHID.$PKGINST"
fi

if [ ! -n "$PATCH_UNDO_ARCHIVE" ]; then
	PATCH_UNDO_ARCHIVE="none"
fi

FILE_DIR=$BUILD_DIR/files
RELOC_DIR=$FILE_DIR/reloc
ROOT_DIR=$FILE_DIR/root
BO_Deletes=$FILE_DIR/deletes
THIS_DIR=`dirname $0`
PROTO_FILE=$BUILD_DIR/prototype
TEMP_REMOTE=$PKGSAV/$SUNW_PATCHID/temp

if [ "$PATCH_PROGRESSIVE" = "true" ]; then
        # remove the scripts that are left behind
        install_scripts=`dirname $0`
        rm $install_scripts/checkinstall $install_scripts/patch_checkinstall $install_scripts/patch_postinstall

	# If this is being used in an old-style patch, insert
	# the old-style script commands here.

	#XXXOld_CommandsXXX#

	exit 0
fi

#
# At this point we either have a deletes file or we don't. If we do,
# we create a prototype entry.
#
if [ -f $BO_Deletes ]; then
	echo "i deletes=$BO_Deletes" >> $BUILD_DIR/prototype
fi

#
# Now delete everything in the deletes list after transferring
# the file to the backout package and the entry to the prototype
# file. Remember that the pkgmap will get the CLIENT_BASEDIR path
# but we have to actually get at it using the BASEDIR path. Also
# remember that removef will import our PKG_INSTALL_ROOT
#
Our_Deletes=$THIS_DIR/deletes
if [ -f $Our_Deletes ]; then
	cd $BASEDIR

	cat $Our_Deletes | while read path; do
		Reg_File=0

		if valpath -l $path; then
			Client_Path="$CLIENT_BASEDIR/$path"
			Build_Path="$RELOC_DIR/$path"
			Proto_Path=$BASEDIR/$path
		else	# It's an absolute path
			Client_Path=$path
			Build_Path="$ROOT_DIR$path"
			Proto_Path=$PKG_INSTALL_ROOT$path
		fi

		# If BASEDIR/CLIENTBASEDIR = "/", then the previous prepends
		# an extra / i.e. //. The sed command later can't find a
		# Proto_Path with // and therefore will not substitute the
		# correct build_Path resulting in the backout pkg not being
		# created.

		if [ "$CLIENT_BASEDIR" = "/" ]; then
			Client_Path=`echo $Client_Path | sed 's|^\/\/|\/|'`
			Proto_Path=`echo $Proto_Path | sed 's|^\/\/|\/|'`
		fi
			
		# Note: If the file isn't really there, pkgproto
		# doesn't write anything but displays an error
		# so check for the file before processing.

		if [ -f "$Proto_Path" ]; then
			LINE=`pkgproto $Proto_Path=$path`
		else
			continue
		fi

		ftype=`echo $LINE | nawk '{ print $1 }'`
		if [ "$ftype" = "f" ]; then
			Reg_File=1
		fi

		if [ $Reg_File = 1 ]; then
			# Add source file to the prototype entry
			if [ "$Proto_Path" = "$path" ]; then
				LINE=`echo $LINE | sed -e "s|$Proto_Path|$Build_Path|2"`
			else
				LINE=`echo $LINE | sed -e "s|$Proto_Path|$Build_Path|"`
			fi

			DirName=`dirname $Build_Path`
			# make room in the build tree
			mkdir -p $DirName
			cp -p $Proto_Path $Build_Path
		fi

		# Insert it into the prototype file
		echo $LINE 1>>$PROTO_FILE 2>/dev/null

		# Remove the file only if it's OK'd by removef
		rm `removef $PKGINST $Client_Path` 1>/dev/null 2>&1
	done
	removef -f $PKGINST

	rm $Our_Deletes
fi

#
# Unless specifically denied, make the backout package.
#
if [ "$PATCH_NO_UNDO" != "true" ]; then
	cd $BUILD_DIR	# We have to build from here.

	if [ "$PATCH_UNDO_ARCHIVE" != "none" ]; then
		STAGE_DIR="$PATCH_UNDO_ARCHIVE"
		ARCHIVE_DIR="$PATCH_UNDO_ARCHIVE/$SUNW_PATCHID/$PKGINST"
		mkdir -p $ARCHIVE_DIR
		mkdir -p $PKGSAV/$SUNW_PATCHID
	else
		if [ -d $PKGSAV/$SUNW_PATCHID ]; then
			rm -r $PKGSAV/$SUNW_PATCHID
		fi
		STAGE_DIR=$PKGSAV
		ARCHIVE_DIR=$PKGSAV/$SUNW_PATCHID
		mkdir $ARCHIVE_DIR
	fi

	pkgmk -o -d $STAGE_DIR 1>/dev/null 2>&1
	pkgtrans -s $STAGE_DIR $ARCHIVE_DIR/undo $PKG 1>/dev/null 2>&1
	compress $ARCHIVE_DIR/undo
	retcode=$?
	if [ "$retcode" != 0 ]; then
		echo "compress(1) returned error code $retcode"
		echo "The $PKGINST backout package will not be compressed."
		echo "Continuing to process backout package."
	fi
	if [ "$PATCH_UNDO_ARCHIVE" != "none" ]; then
		if [ $retcode != 0 ]; then
			build_remote_file "undo"
		else
			build_remote_file "undo.Z"
		fi
	fi
	rm -r $STAGE_DIR/$PKG

	cd ..
	rm -r $BUILD_DIR
	# remove the scripts that are left behind
	install_scripts=`dirname $0`
	rm $install_scripts/checkinstall $install_scripts/patch_checkinstall $install_scripts/patch_postinstall
fi

#
# Since this apparently worked, we'll mark as obsoleted the prior
# versions of this patch - installpatch deals with explicit obsoletions.
#
cd ${PKG_INSTALL_ROOT:-/}
cd var/sadm/pkg

active_base=`echo $SUNW_PATCHID | nawk '
	{ print substr($0, 1, match($0, "-")-1) } '`

List=`ls -d $PKGINST/save/${active_base}* 2>/dev/null`
if [ $? -ne 0 ]; then
	List=""
fi

for savedir in $List; do
        patch=`basename $savedir` 
        if [ $patch = $SUNW_PATCHID ]; then
		break
	fi

        # If we get here then the previous patch gets deleted
	if [ -f $savedir/undo ]; then
		mv $savedir/undo $savedir/obsolete
		echo $SUNW_PATCHID >> $savedir/obsoleted_by
	elif [ -f $savedir/undo.Z ]; then
		mv $savedir/undo.Z $savedir/obsolete.Z
		echo $SUNW_PATCHID >> $savedir/obsoleted_by
        elif  [ -f $savedir/remote ]; then
                `grep . $PKGSAV/$patch/remote | sed 's|STATE=.*|STATE=obsolete|' > $TEMP_REMOTE` 
                rm -f $PKGSAV/$patch/remote 
                mv $TEMP_REMOTE $PKGSAV/$patch/remote  
                rm -f $TEMP_REMOTE 
                echo $SUNW_PATCHID >> $savedir/obsoleted_by
	elif  [ -f $savedir/obsolete -o -f $savedir/obsolete.Z ]; then
		echo $SUNW_PATCHID >> $savedir/obsoleted_by
	fi
done

# If additional operations are required for this package, place
# those package-specific commands here.
#
#XXXSpecial_CommandsXXX#
#
#ident	"@(#)postinstall	1.2	02/02/11 SMI"
#
# Copyright 2002 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

###########################################################################
#
# postinstall for SUNWgzip
#
#	* remove hard links for gzcat, gunzip
#	* add symlink for gunzip, gzcat, gzcmp
#	* update /var/sadm/install/contents
#
###########################################################################

#------------------------------------
# This function will remove the indicated file which belongs to the
# indicated package from the system and the contents file.
# It will then remove the files' parent directory if it's empty
# and remove it from the contents file.
#
#    remove_it <MY_PKGNAME> <SYMLINK>
#------------------------------------
remove_it()
{
   MY_PKGNAME=$1
   RM_LINK=$2

   # Get My BASEDIR
   PKG_BASEDIR=`/usr/bin/pkgparam ${MY_PKGNAME} BASEDIR`
   if [ "$PKG_BASEDIR" != "/" ]; then
      TRUE_LINK=${PKG_BASEDIR}/${RM_LINK}
   else
      TRUE_LINK=${PKG_BASEDIR}${RM_LINK}
   fi

   if [ "x$ROOTDIR" = "x/" ]; then
      FS_ROOTDIR=""
      REMOVEF="/usr/sbin/removef -R $ROOTDIR"
   else 
      FS_ROOTDIR="${ROOTDIR}"
      REMOVEF="/usr/sbin/removef"
   fi

   # If the link is present, remove it.
   if [ -h ${FS_ROOTDIR}${TRUE_LINK} ]
   then
     $REMOVEF $MY_PKGNAME $TRUE_LINK |
      while read pathname
      do
        echo "Removing $pathname"
        /bin/rm -f $pathname
      done
     $REMOVEF -f $MY_PKGNAME
     if [ $? -ne 0 ]; then
        return 1
     fi
   fi
   
   # See if we can remove the directory
   LINK_DIR=`/bin/dirname ${TRUE_LINK}`

   if [ ! -d $LINK_DIR ]; then
      return 0
   fi

   # We can remove the directory because it's empty
   $REMOVEF $MY_PKGNAME $LINK_DIR |
     while read pathname
     do
          echo "Removing directory $pathname"
          /bin/rmdir $pathname
     done
   $REMOVEF -f $MY_PKGNAME
   if [ $? -ne 0 ]; then
      return 1
   fi

   return 0
}

#------------------------------------
# This function will add the indicated symlink which belongs to the
# indicated package to the system and the contents file.
# It will create the files' parent directory if necessary
# and add it to the contents file.
#
#    add_link <MY_PKGNAME> <SYMLINK> <LINK_TARGET>
#------------------------------------
add_link()
{
   MY_PKGNAME=$1
   ADD_LINK=$2
   ADD_LINK_TARGET=$3

   # Get My BASEDIR
   PKG_BASEDIR=`/usr/bin/pkgparam ${MY_PKGNAME} BASEDIR`
   if [ "$PKG_BASEDIR" != "/" ]; then
      TRUE_LINK=${PKG_BASEDIR}/${ADD_LINK}
   else
      TRUE_LINK=${PKG_BASEDIR}${ADD_LINK}
   fi

   if [ "x$ROOTDIR" = "x/" ]; then
      FS_ROOTDIR=""
      INSTALLF="/usr/sbin/installf -R $ROOTDIR"
   else 
      FS_ROOTDIR="${ROOTDIR}"
      INSTALLF="/usr/sbin/installf"
   fi

   # See if we need to add the directory
   LINK_DIR=`/bin/dirname ${TRUE_LINK}`

   # Restoring directory ${FS_ROOTDIR}$LINK_DIR
   $INSTALLF $MY_PKGNAME $LINK_DIR d 0755 root bin
   $INSTALLF -f $MY_PKGNAME

   if [ $? -ne 0 ]; then
      return 1
   fi

   if [ ! -d ${FS_ROOTDIR}$LINK_DIR ]; then
      mkdir ${FS_ROOTDIR}$LINK_DIR
      chown root ${FS_ROOTDIR}$LINK_DIR
      chgrp bin ${FS_ROOTDIR}$LINK_DIR
      chmod 0755 ${FS_ROOTDIR}$LINK_DIR
   fi

   # If the link is not present, add it.
   if [ ! -h ${FS_ROOTDIR}${TRUE_LINK} ]
   then
     echo "Restoring symlink ${FS_ROOTDIR}$TRUE_LINK"
     $INSTALLF $MY_PKGNAME ${TRUE_LINK}=${ADD_LINK_TARGET} s
     $INSTALLF -f $MY_PKGNAME
     if [ $? -ne 0 ]; then
        return 1
     fi
   fi
   
   return 0
}

###########################################################################
#
# main 
#
###########################################################################

# Name of package
PKGINST=SUNWgzip

# Don't execute if the package is not installed
# or a dependent patch is installed.
if [ -d /var/sadm/pkg/${PKGINST} ]; then
   #-----------------------------
   # Remove the hard links that were originally on the system.
   #-----------------------------
# Try this for now maybe should be handled by prebackout patch script.
   remove_it $PKGINST usr/bin/gzcat
   if [ $? -ne 0 ]; then
      exit 1
   fi 
     
   remove_it $PKGINST usr/bin/gunzip
   if [ $? -ne 0 ]; then
      exit 1
   fi 

   #-----------------------------
   # Restore symlinks that were removed by the patch install.
   #-----------------------------
   echo
   echo "The following symlinks are being restored."
   echo
   add_link $PKGINST usr/bin/gzcmp gzdiff 
   add_link $PKGINST usr/bin/gunzip gzip 
   add_link $PKGINST usr/bin/gzcat gzip 
   if [ $? -ne 0 ]; then
      exit 1
   fi 
   
fi
