summaryrefslogtreecommitdiff
path: root/source/a/pkgtools/scripts/removepkg
blob: b033eebf2d5c0681885e58f804b43d43cfaf6789 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
#!/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 $*