#!/bin/sh
# Slackware remove package script
#
# Thu Sep 24 03:31:58 UTC 2015 <alphageek>
# extract_links() sed adjusted to handle symlinks with spaces.
#
# Sun Sep 6 21:58:36 BST 2009
# Replaced pkgbase & package_name code with 'sed' script by Jim Hawkins.
#
# Sat Apr 25 21:18:53 UTC 2009 (12.34567890b)
# Converted to use new pkgbase() function to remove pathname and
# valid package extensions.
#
# Revision 12.34567890 Sun Apr 5 20:59:32 CDT 2009 <volkerdi>
# - Support packages with the extensions: .tgz, .tbz, .tlz, .txz
#
# Revision 1.9 Wed Oct 31 14:04:28 CDT 2007 volkerding
# - Fix problem removing packages with a large number of fields.
# Thanks to Niki Kovacs for noticing this, and to Piter Punk
# for the patch.
# - Use LC_ALL=C locale, which is much faster with "sort".
# Thanks to Tsomi.
# - Don't try to remove any package that starts with '-'. This
# is not a proper package name (usually a typo), and results
# in the package database being broken. Thanks to Jef Oliver.
# - Patched cat_except() to allow the last Slackware package on
# a partition to be removed (using ROOT=, of course)
# Thanks to Selkfoster for the patch, and to everyone else who
# proposed solutions before. This issue really wasn't given
# the highest priority before, but I figured while I'm in here...
#
# Revision 1.8 Thu Nov 22 14:00:13 PST 2001 volkerding Rel $
# - Move $TMP underneath $ROOT
# - Understand the idea of a base package name, so that packages
# can be removed with any of these notations:
# removepkg foo-1.0-i386-1.tgz
# removepkg foo-1.0-i386-1
# removepkg foo.tgz
# removepkg foo
#
# Revision 1.7 2001/03/30 12:36:28 volkerding
# - Strip extra ".tgz" from input names.
#
# Revision 1.6 1999/03/25 18:26:41 volkerding
# - Use external $ROOT variable, like installpkg.
#
# Revision 1.5.1 1998/03/18 15:37:28 volkerding
# - Since removepkg is always run by root, the temp directory has been
# moved from /tmp to a private directory to avoid symlink attacks from
# malicious users.
#
# Revision 1.5 1997/06/26 12:09:53 franke
# - Fixed old bug in TRIGGER regex setting
# - -preserve/-copy options now preserve non-unique files
# and empty directories also
#
# Revision 1.4 1997/06/09 13:21:36 franke
# - Package file preserve (-preserve, -copy) added.
# - Don't execute "rm -rf" lines from doinst.sh, removing links explicit.
# - Warning on no longer existing files added.
# - Warning on files changed after package installation added.
# - Intermediate file preserve (-keep) added.
# - Check for required files/links now done on a combined list.
# - Write access to /var/log/{packages,scripts} no longer necessary for -warn.
#
# Revision 1.3 1997/06/08 13:03:05 franke
# Merged with revision 1.1.1.1
#
# Revision 1.2 1996/06/01 20:04:26 franke
# Delete empty directories & formated manual pages added
#
# Revision 1.1.1.1 1995/12/18 21:20:42 volkerding
# Original Version from Slackware 3.1
#
# Revision 1.1 1995/06/05 22:49:11 volkerding
# Original Version from Slackware 3.0
#
# Copyright 1994, 1995, 1998 Patrick Volkerding, Moorhead, Minnesota USA
# Copyright 2001, Slackware Linux, Inc., Concord, CA USA
# Copyright 2009, 2015 Patrick J. Volkerding, Sebeka, MN, USA
# All rights reserved.
#
# Redistribution and use of this script, with or without modification, is
# permitted provided that the following conditions are met:
#
# 1. Redistributions of this script must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
# EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
# OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
# ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Return a package name that has been stripped of the dirname portion
# and any of the valid extensions (only):
pkgbase() {
# basename + strip extensions .tbz, .tgz, .tlz and .txz
echo "$1" | sed 's?.*/??;s/\.t[bglx]z$//'
}
# This makes "sort" run much faster:
export LC_ALL=C
# Make sure there's a proper temp directory:
TMP=$ROOT/var/log/setup/tmp
# If the $TMP directory doesn't exist, create it:
if [ ! -d $TMP ]; then
rm -rf $TMP # make sure it's not a symlink or something stupid
mkdir -p $TMP
chmod 700 $TMP # no need to leave it open
fi
ADM_DIR=$ROOT/var/log
PRES_DIR=$TMP/preserved_packages
# This simple cat_except() should be used on the installer,
# since the busybox "find" can't handle the complex find
# syntax:
#cat_except() {
# ( cd "$1" && cat $(ls * | sed "/^$2\$/d"))
#}
# This version of cat_except() allows the last package to be
# removed when ROOT= is used:
cat_except() {
( cd "$1" && \
if [ $(find . -type f -maxdepth 1 | wc -l) -ne 1 ]; then
cat $(find . -type f -maxdepth 1 | grep -v "$2")
fi
)
}
extract_links() {
sed -n 's,^[ ]*( [ ]*cd[ ]* \(.*\) [ ]*; [ ]*rm [ ]*-rf[ ]* \(.*\) [ ]*)[ ]*$,\1/\2,p'
}
preserve_file() {
if [ "$PRESERVE" = "true" ]; then
F="$(basename "$1")"
D="$(dirname "$1")"
if [ ! -d "$PRES_DIR/$PKGNAME/$D" ]; then
mkdir -p "$PRES_DIR/$PKGNAME/$D" || return 1
fi
cp -p "$ROOT/$D/$F" "$PRES_DIR/$PKGNAME/$D" || return 1
fi
return 0
}
preserve_dir() {
if [ "$PRESERVE" = "true" ]; then
if [ ! -d "$PRES_DIR/$PKGNAME/$1" ]; then
mkdir -p "$PRES_DIR/$PKGNAME/$1" || return 1
fi
fi
return 0
}
keep_files() {
while read FILE ; do
if [ ! -d "$ROOT/$FILE" ]; then
if [ -r "$ROOT/$FILE" ]; then
echo " --> $ROOT/$FILE was found in another package. Skipping."
preserve_file "$FILE"
else
if [ "$(echo $FILE | cut -b1-8)" != "install/" ]; then
echo "WARNING: Nonexistent $ROOT/$FILE was found in another package. Skipping."
fi
fi
else
preserve_dir "$FILE"
fi
done
}
keep_links() {
while read LINK ; do
if [ -L "$ROOT/$LINK" ]; then
echo " --> $ROOT/$LINK (symlink) was found in another package. Skipping."
else
echo "WARNING: Nonexistent $ROOT/$LINK (symlink) was found in another package. Skipping."
fi
done
}
delete_files() {
while read FILE ; do
if [ ! -d "$ROOT/$FILE" ]; then
if [ -r "$ROOT/$FILE" ]; then
if [ "$ROOT/$FILE" -nt "$ADM_DIR/packages/$PKGNAME" ]; then
echo "WARNING: $ROOT/$FILE changed after package installation."
fi
if [ ! "$WARN" = "true" ]; then
echo " --> Deleting $ROOT/$FILE"
preserve_file "$FILE" && rm -f "$ROOT/$FILE"
else
echo " --> $ROOT/$FILE would be deleted"
preserve_file "$FILE"
fi
else
echo " --> $ROOT/$FILE no longer exists. Skipping."
fi
else
preserve_dir "$FILE"
fi
done
}
delete_links() {
while read LINK ; do
if [ -L "$ROOT/$LINK" ]; then
if [ ! "$WARN" = "true" ]; then
echo " --> Deleting symlink $ROOT/$LINK"
rm -f "$ROOT/$LINK"
else
echo " --> $ROOT/$LINK (symlink) would be deleted"
fi
else
echo " --> $ROOT/$LINK (symlink) no longer exists. Skipping."
fi
done
}
delete_dirs() {
sort -r | \
while read DIR ; do
if [ -d "$ROOT/$DIR" ]; then
if [ ! "$WARN" = "true" ]; then
if [ $(ls -a "$ROOT/$DIR" | wc -l) -eq 2 ]; then
echo " --> Deleting empty directory $ROOT/$DIR"
rmdir "$ROOT/$DIR"
else
echo "WARNING: Unique directory $ROOT/$DIR contains new files"
fi
else
echo " --> $ROOT/$DIR (dir) would be deleted if empty"
fi
fi
done
}
delete_cats() {
sed -n 's,/man\(./[^/]*$\),/cat\1,p' | \
while read FILE ; do
if [ -f "$ROOT/$FILE" ]; then
if [ ! "$WARN" = "true" ]; then
echo " --> Deleting $ROOT/$FILE (fmt man page)"
rm -f $ROOT/$FILE
else
echo " --> $ROOT/$FILE (fmt man page) would be deleted"
fi
fi
done
}
package_name() {
STRING=$(pkgbase $1 | sed 's?-[^-]*-[^-]*-[^-]*$??')
# If we don't do this, commands run later will take the '-' to be an option
# and will destroy the package database. Packages should not contain spaces
# in them. Normally this type of problem results from a command line typo.
if [ "$(echo $STRING | cut -b 1)" = "-" ]; then
STRING="malformed-package-name-detected"
fi
echo $STRING
}
# Conversion to 'comm' utility by Mark Wisdom.
# is pretty nifty! :^)
remove_packages() {
for PKGLIST in $*
do
PKGNAME=$(pkgbase $PKGLIST)
echo
# If we don't have a package match here, then we will attempt to find
# a package using the long name format (name-version-arch-build) for
# which the base package name was given. On a properly-managed machine,
# there should only be one package installed with a given basename, but
# we don't enforce this policy. If there's more than one, only one will
# be removed. If you want to remove them all, you'll need to run
# removepkg again until it removes all the same-named packages.
if [ ! -e $ADM_DIR/packages/$PKGNAME ]; then
SHORT="$(package_name $PKGNAME)"
for long_package in $ADM_DIR/packages/${PKGNAME}* ; do
if [ "$SHORT" = "$(package_name $long_package)" ]; then
PKGNAME="$(basename $long_package)"
fi
done
fi
if [ ! -e $ADM_DIR/packages/$PKGNAME ]; then
long_package=$(ls -1 $ADM_DIR/packages/${PKGNAME}* | grep -m 1 "^${PKGNAME}-[^-]*-[^-]*-[^-]*$")
if [ -e "$long_package" ]; then
PKGNAME=$(basename $long_package)
fi
fi
if [ -r $ADM_DIR/packages/$PKGNAME ]; then
if [ ! "$WARN" = true ]; then
echo "Removing package $ADM_DIR/packages/$PKGNAME..."
fi
if fgrep "./" $ADM_DIR/packages/$PKGNAME 1> /dev/null 2>&1; then
TRIGGER="^\.\/"
else
TRIGGER="FILE LIST:"
fi
if [ ! "$WARN" = true ]; then
echo "Removing files:"
fi
sed -n "/$TRIGGER/,/^$/p" < $ADM_DIR/packages/$PKGNAME | \
fgrep -v "FILE LIST:" | sort -u > $TMP/delete_list$$
# Pat's new-new && improved pre-removal routine.
cat_except $ADM_DIR/packages $PKGNAME | sort -u > $TMP/required_list$$
if [ -r $ADM_DIR/scripts/$PKGNAME ]; then
extract_links < $ADM_DIR/scripts/$PKGNAME | sort -u > $TMP/del_link_list$$
cat_except $ADM_DIR/scripts $PKGNAME | extract_links | \
sort -u > $TMP/required_links$$
mv $TMP/required_list$$ $TMP/required_files$$
sort -u $TMP/required_links$$ $TMP/required_files$$ > $TMP/required_list$$
comm -12 $TMP/del_link_list$$ $TMP/required_list$$ | keep_links
comm -23 $TMP/del_link_list$$ $TMP/required_list$$ | delete_links
else
cat $ADM_DIR/scripts/* | extract_links | \
sort -u > $TMP/required_links$$
mv $TMP/required_list$$ $TMP/required_files$$
sort -u $TMP/required_links$$ $TMP/required_files$$ >$TMP/required_list$$
fi
comm -12 $TMP/delete_list$$ $TMP/required_list$$ | keep_files
comm -23 $TMP/delete_list$$ $TMP/required_list$$ > $TMP/uniq_list$$
delete_files < $TMP/uniq_list$$
delete_dirs < $TMP/uniq_list$$
delete_cats < $TMP/uniq_list$$
if [ ! "$KEEP" = "true" ]; then
rm -f $TMP/delete_list$$ $TMP/required_files$$ $TMP/uniq_list$$
rm -f $TMP/del_link_list$$ $TMP/required_links$$ $TMP/required_list$$
fi
if [ "$PRESERVE" = "true" ]; then
if [ -r $ADM_DIR/scripts/$PKGNAME ]; then
if [ ! -d "$PRES_DIR/$PKGNAME/install" ]; then
mkdir -p "$PRES_DIR/$PKGNAME/install"
fi
cp -p $ADM_DIR/scripts/$PKGNAME $PRES_DIR/$PKGNAME/install/doinst.sh
fi
fi
if [ ! "$WARN" = "true" ]; then
for DIR in $ADM_DIR/removed_packages $ADM_DIR/removed_scripts ; do
if [ ! -d $DIR ] ; then mkdir -p $DIR ; chmod 755 $DIR ; fi
done
mv $ADM_DIR/packages/$PKGNAME $ADM_DIR/removed_packages
if [ -r $ADM_DIR/scripts/$PKGNAME ]; then
mv $ADM_DIR/scripts/$PKGNAME $ADM_DIR/removed_scripts
fi
fi
else
echo "No such package: $ADM_DIR/packages/$PKGNAME. Can't remove."
fi
done
}
if [ "$#" = "0" ]; then
echo "Usage: $(basename $0) [-copy] [-keep] [-preserve] [-warn] packagename ..."; exit 1
fi
while : ; do
case "$1" in
-copy | --copy) WARN=true; PRESERVE=true; shift;;
-keep | --keep) KEEP=true; shift;;
-preserve | --preserve) PRESERVE=true; shift;;
-warn | --warn) WARN=true; shift;;
-* | --*) echo "Usage: $(basename $0) [-copy] [-keep] [-preserve] [-warn] packagename ..."; exit 1;;
*) break
esac
done
if [ "$WARN" = "true" ]; then
echo "Only warning... not actually removing any files."
if [ "$PRESERVE" = "true" ]; then
echo "Package contents is copied to $PRES_DIR."
fi
echo "Here's what would be removed (and left behind) if you"
echo "removed the package(s):"
echo
else
if [ "$PRESERVE" = "true" ]; then
echo "Package contents is copied to $PRES_DIR."
fi
fi
remove_packages $*
