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#!/bin/sh
#
### this is the location of a file which contains all the actual package names
## (ie "Polipo", "polipostartup", ...) the list should be new-line-delimited.
PACKAGE_LIST_SRC="Polipo polipostartup"
### this is the name of the user created in the install process of Polipo
POLIPO_USER=_polipo
### these should be constant across all osX installs (so leave them be)
STARTUP_ITEMS_DIR=/Library/StartupItems
PKG_RCPT_BASE_DIR=/Library/Receipts
BOM_INTERMEDIATE_DIR=Contents/Resources
INFO_INTERMEDIATE_DIR=$BOM_INTERMEDIATE_DIR/English.lproj
TEMP_BOM_CONTENTS=/tmp/polipo_uninst_scratch
### make sure the script is being run as root, barf if not
if [ "`whoami`" != "root" ]; then
echo "Must be root to run the uninstall script."
exit -1
fi
### check to see if polipo is currently running, kill it if it is
## we grep on 'Polipo/polipo ' because 'polipo' is too common (like in 'direcpolipoy')
## -- this relies on the fact that polipo has been started with command
## line arguments.. :-/
POLIPO_PID=`ps -uax | grep 'Polipo/polipo ' | grep -v grep | awk '{print $2;}'`
if [ ${#POLIPO_PID} -gt 0 ]; then
echo ". Killing currently running polipo process, pid is $POLIPO_PID"
kill -9 $POLIPO_PID
else
echo ". polipo process appears to already be stopped"
fi
## grab each package name from the package list file
while read LINE; do
if [ ${#LINE} -gt 0 ]; then
PACKAGE_NAME=$LINE.pkg
PACKAGE_PATH=$PKG_RCPT_BASE_DIR/$PACKAGE_NAME
echo ". Uninstalling $PACKAGE_NAME"
if [ ! -d $PACKAGE_PATH ]; then
echo " . No receipt exists for this package -- skipping."
continue
fi
## get rid of the startup item if it exists
STARTUP_DIR=$STARTUP_ITEMS_DIR/$LINE
if [ -d $STARTUP_DIR ]; then
echo " . Deleting startup item $STARTUP_DIR"
rm -rf $STARTUP_DIR
fi
## determine the root direcpolipoy of the the relative paths specified in the bom
DEFAULT_LOC=`grep DefaultLocation $PACKAGE_PATH/$INFO_INTERMEDIATE_DIR/$LINE.info | awk '{print $2;}'`
if [ ${#DEFAULT_LOC} -eq 0 ]; then
echo "!! Could not find default location for $LINE package -- skipping package."
continue
fi
## examine the list of installed items desribed in the bom
BOM_FILE=$PACKAGE_PATH/$BOM_INTERMEDIATE_DIR/$LINE.bom
lsbom $BOM_FILE > $TEMP_BOM_CONTENTS
while read BOM_ITEM; do
## 3 column items describe just direcpolipoies, 5 column items describe actual files
COL_COUNT=$(echo $BOM_ITEM | awk '{print NF;}')
if [ "$COL_COUNT" -eq 5 ]; then
FILE_NAME=$DEFAULT_LOC/$(echo $BOM_ITEM | awk '{print $1;}')
echo " . Removing $FILE_NAME"
rm -rf $FILE_NAME
fi
done < $TEMP_BOM_CONTENTS
## remove package receipt
echo " . Removing package receipt $PACKAGE_PATH"
rm -rf $PACKAGE_PATH
fi
done < $PACKAGE_LIST_SRC
## nuke the user created by the install process.
echo ". Removing created user $POLIPO_USER"
niutil -destroy . /users/$POLIPO_USER
## clean up
echo ". Cleaning up"
rm -rf $TEMP_BOM_CONTENTS
rm -rf /Library/Polipo/ /Library/StartupItems/Polipo/
echo ". Finished"
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