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slackware-current/testing/source/pkgtools/scripts/removepkg
Patrick J Volkerding 7e5ee73de9 Tue Jun 19 22:35:25 UTC 2018 
a/acl-2.2.53-x86_64-1.txz:  Upgraded.
a/attr-2.4.48-x86_64-1.txz:  Upgraded.
n/gnupg-1.4.23-x86_64-1.txz:  Upgraded.
  Sanitize the diagnostic output of the original file name in verbose mode.
  By using a made up file name in the message it was possible to fake status
  messages. Using this technique it was for example possible to fake the
  verification status of a signed mail.
  For more information, see:
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12020
  (* Security fix *)
x/libXaw3d-1.6.3-x86_64-1.txz:  Upgraded.
x/libinput-1.11.1-x86_64-1.txz:  Upgraded.
x/xf86-input-mouse-1.9.3-x86_64-1.txz:  Upgraded.
testing/packages/pkgtools-15.0-noarch-20.txz:  Rebuilt.
  This update is a bit scarier than usual, so we're going to test it here
  first and then move it into the main tree in a couple of days if there
  are no serious bug reports. It's well-tested here, and works with the
  slackpkg that's in -current now, but I don't know about slackpkg+ so that's
  another reason to let it cool down here first. The purpose of this update
  is to migrate the package database and directories from /var/log to
  /var/lib/pkgtools. /var/log was never a good place for this data, as it is
  considered by many to be a directory that could be wiped to free up some
  space. Originally the package database was in /var/adm, but the FSSTND
  (later FHS) group decided that directory should be a symlink to /var/log,
  and I went along with that since it was years ago and I was a n00b and didn't
  know any better. /var/lib/pkgtools will be a better and safer location.
  The removed_packages and removed_scripts directories are really just logs
  that aren't actually used for anything - those will remain under /var/log,
  but moved into /var/log/pkgtools. Everything under /var/log will be
  considered potentially non-permanent by the pkgtools - if any directories or
  symlinks disappear from there, the pkgtools will automatically recreate them
  as needed. In fact, the migration process will create symlinks from all the
  old directory locations to the new ones, so anything that expects the old
  locations (including slackpkg, for now) should continue to work. Once this
  moves into the main tree, the plan is to fix other packages to use the new
  installer script directory (/var/lib/pkgtools/setup) and change the installer
  and slackpkg to use the new native locations for everything. When slackpkg
  is changed over to use the new native locations, I'll also make sure to float
  that in testing/ for a few days before moving it to the main tree to avoid
  more unintentional disruption to slackpkg+ users.
  Be aware that the package database migration is a one-way operation, but even
  so if you later downgrade to an older version of the pkgtools it will still
  work through the compatibility symlinks.
2018-06-20 09:00:31 +02:00

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#!/bin/sh
# Slackware remove package script
#
# Copyright 1994, 1995, 1998 Patrick Volkerding, Moorhead, Minnesota USA
# Copyright 2001, Slackware Linux, Inc., Concord, CA USA
# Copyright 2009, 2015, 2016, 2018 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.
#
# Tue Jun 5 20:04:45 UTC 2018
# Use /var/lib/pkgtools for the package database, not /var/log.
# Logs of the removed packages and scripts will remain in /var/log, but moved
# into /var/log/pkgtools.
#
# Sun May 27 18:02:23 UTC 2018
# Added --terse mode to print one line per removed package.
#
# Wed May 23 17:31:23 UTC 2018
# Use file locking to prevent more than one copy of ldconfig from running at
# a time.
#
# Thu Sep 15 17:46:28 UTC 2016 <volkerdi>
# If removepkg is called with a short package name (no -$VERSION-$ARCH-$BUILD),
# remove the most recently installed matching package, not the oldest one.
#
# Thu Sep 15 08:09:01 BST 2016 <mozes>
# - Handle finding >1 match for a package. Thanks to SeB on LQ for the feedback.
#
# Wed Sep 14 20:44:00 BST 2016 <mozes>
# - Modify package_name function to cater for package file names that contain
# >=4 hyphens.
# Thanks to coralfang on LQ for the report and to Jim Hawkins for the patch.
# - Modified to handle packages that contain file names with backslashes
# Thanks to aaazen on LQ for the report and the patch.
#
# 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
#
# Needed to find package names within the 'remove_packages' function:
shopt -s extglob
# 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
# Set the prefix for the package database directories (packages, scripts).
ADM_DIR="$ROOT/var/lib/pkgtools"
# Set the prefix for the removed packages/scripts log files:
LOG_DIR="$ROOT/var/log/pkgtools"
# Make sure there's a proper temp directory:
TMP=$ADM_DIR/setup/tmp
# If the $TMP directory doesn't exist, create it:
if [ ! -d $TMP ]; then
mkdir -p $TMP
chmod 700 $TMP # no need to leave it open
fi
PRES_DIR=$TMP/preserved_packages
# Lock directory for ldconfig... share it with installpkg so that upgradepkg
# becomes properly ldconfig-locked, too.
INSTLOCKDIR=${INSTLOCKDIR:-/run/lock/pkgtools}
if [ ! -d $INSTLOCKDIR ]; then
mkdir -p $INSTLOCKDIR
fi
# 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 2> /dev/null | wc -l) -ne 1 ]; then
cat $(find . -type f -maxdepth 1 2> /dev/null | grep -v "$2") 2> /dev/null
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
! [ $TERSE ] && echo " --> $ROOT/$FILE was found in another package. Skipping."
preserve_file "$FILE"
else
if [ "$(echo $FILE | cut -b1-8)" != "install/" ]; then
! [ $TERSE ] && 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
! [ $TERSE ] && echo " --> $ROOT/$LINK (symlink) was found in another package. Skipping."
else
! [ $TERSE ] && echo "WARNING: Nonexistent $ROOT/$LINK (symlink) was found in another package. Skipping."
fi
done
}
delete_files() {
local unset LC_ALL # Locally (within this delete_files function) allow handling of backslashes
while read -r AFILE ; do # do not expand backslashes on read
FILE=$(printf "%b" "$AFILE") # unescape octal characters
if [ ! -d "$ROOT/$FILE" ]; then
if [ -r "$ROOT/$FILE" ]; then
if [ "$ROOT/$FILE" -nt "$ADM_DIR/packages/$PKGNAME" ]; then
! [ $TERSE ] && echo "WARNING: $ROOT/$FILE changed after package installation."
fi
if [ ! "$WARN" = "true" ]; then
! [ $TERSE ] && echo " --> Deleting $ROOT/$FILE"
preserve_file "$FILE" && rm -f "$ROOT/$FILE"
else
! [ $TERSE ] && echo " --> $ROOT/$FILE would be deleted"
preserve_file "$FILE"
fi
else
! [ $TERSE ] && 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
! [ $TERSE ] && echo " --> Deleting symlink $ROOT/$LINK"
rm -f "$ROOT/$LINK"
else
! [ $TERSE ] && echo " --> $ROOT/$LINK (symlink) would be deleted"
fi
else
! [ $TERSE ] && 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
! [ $TERSE ] && echo " --> Deleting empty directory $ROOT/$DIR"
rmdir "$ROOT/$DIR"
else
! [ $TERSE ] && echo "WARNING: Unique directory $ROOT/$DIR contains new files"
fi
else
! [ $TERSE ] && 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
! [ $TERSE ] && echo " --> Deleting $ROOT/$FILE (fmt man page)"
rm -f $ROOT/$FILE
else
! [ $TERSE ] && echo " --> $ROOT/$FILE (fmt man page) would be deleted"
fi
fi
done
}
# Conversion to 'comm' utility by Mark Wisdom.
# is pretty nifty! :^)
remove_packages() {
for PKGLIST in $*
do
PKGNAME=$(pkgbase $PKGLIST)
# 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 name not found - finally try looking for full name - e.g. foo-1.0-arm-1
pushd $ADM_DIR/packages > /dev/null
# Don't set PKGNAME if there are no matches:
if [ ! "$( ls -1 $PKGNAME-+([^-])-+([^-])-+([^-]) 2>/dev/null | wc -l )" = "0" ]; then
# If there is more than one package with the same name, set PKGNAME to the
# most recently installed version. This does not affect the behavior of
# upgradepkg, which always removes all other existing versions of the
# same package.
PKGNAME=$( ls -1t $PKGNAME-+([^-])-+([^-])-+([^-]) 2> /dev/null | head -n1 )
fi
popd > /dev/null
fi
if [ -r $ADM_DIR/packages/$PKGNAME ]; then
if [ ! "$WARN" = true ]; then
echo "Removing package: $(basename $ADM_DIR/packages/$PKGNAME)"
fi
if fgrep "./" $ADM_DIR/packages/$PKGNAME 1> /dev/null 2>&1; then
TRIGGER="^\.\/"
else
TRIGGER="FILE LIST:"
fi
if [ ! "$WARN" = true ]; then
! [ $TERSE ] && echo "Removing files:"
fi
sed -n "/$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$$ | delete_links
else
cat $ADM_DIR/scripts/* 2> /dev/null | extract_links | \
sort -u > $TMP/required_links$$
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
# We won't assume that anything in /var/log can be trusted to remain there,
# so we'll remake the directories and symlinks first:
mkdir -p $LOG_DIR/removed_packages $LOG_DIR/removed_scripts
for symlink in removed_packages removed_scripts ; do
if [ ! -L $LOG_DIR/../$symlink ]; then
rm -rf $LOG_DIR/../$symlink
( cd $LOG_DIR/.. ; ln -sf pkgtools/$symlink . )
fi
done
# Now that we know we have log directories, move the files:
mv $ADM_DIR/packages/$PKGNAME $LOG_DIR/removed_packages
if [ -r $ADM_DIR/scripts/$PKGNAME ]; then
mv $ADM_DIR/scripts/$PKGNAME $LOG_DIR/removed_scripts
fi
fi
else
echo "No such package: $(basename $ADM_DIR/packages/$PKGNAME). Can't remove."
fi
# In the case where a library and symlink are removed but an earlier version
# remains on the machine, this will link it up and save potential problems:
if [ "$ROOT" = "" ] && [ -x /sbin/ldconfig ]; then
( flock 9 || exit 11
/sbin/ldconfig 2> /dev/null
) 9> $INSTLOCKDIR/ldconfig.lock
fi
done
}
if [ "$#" = "0" ]; then
echo "Usage: $(basename $0) [--copy] [--keep] [--preserve] [--terse] [--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;;
-terse | --terse) TERSE=0; shift;;
-warn | --warn) WARN=true; shift;;
-* | --*) echo "Usage: $(basename $0) [-copy] [-keep] [-preserve] [-warn] packagename ..."; exit 1;;
*) break
esac
done
if [ "$WARN" = "true" ]; then
unset TERSE
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 $*
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