lbu.in 15.5 KB
Newer Older
Natanael Copa's avatar
Natanael Copa committed
1
2
3
#!/bin/sh

# lbu - utility to create local backups.
4
# Copyright (c) 2006-2010 Natanael Copa <ncopa@alpinelinux.org>
Natanael Copa's avatar
Natanael Copa committed
5
6
# May be distributed under GPL2

7
VERSION=@VERSION@
Natanael Copa's avatar
Natanael Copa committed
8
sysconfdir=@sysconfdir@
Natanael Copa's avatar
Natanael Copa committed
9

10
11
if [ ! -f ${libalpine:="./libalpine.sh"} ]; then
	libalpine=/usr/share/lbu/libalpine.sh
12
13
14
	if [ ! -f "$libalpine" ]; then
		libalpine=/lib/libalpine.sh
	fi
15
16
fi
. $libalpine || exit 1
Natanael Copa's avatar
Natanael Copa committed
17

Natanael Copa's avatar
Natanael Copa committed
18
19
EXCLUDE_LIST="$sysconfdir"/exclude
INCLUDE_LIST="$sysconfdir"/include
Natanael Copa's avatar
Natanael Copa committed
20

Natanael Copa's avatar
Natanael Copa committed
21
22
DEFAULT_CIPHER="aes-256-cbc"

Natanael Copa's avatar
Natanael Copa committed
23
LBU_CONF="$sysconfdir"/lbu.conf
24
25
26
LBU_PREPACKAGE="$sysconfdir"/pre-package.d
LBU_POSTPACKAGE="$sysconfdir"/post-package.d

Natanael Copa's avatar
Natanael Copa committed
27
28
if [ -f "$LBU_CONF" ]; then
	. "$LBU_CONF"
29
30
fi

Natanael Copa's avatar
Natanael Copa committed
31
32
UMOUNT_LIST=

Natanael Copa's avatar
Natanael Copa committed
33
34
35
36
37
38
39
40
usage() {
	echo "$PROGRAM $VERSION"
	echo "usage: $PROGRAM <subcommand> [options] [args]

Available subcommands:
  commit (ci)
  exclude (ex, delete)
  include (inc, add)
41
42
  list (ls)
  package (pkg)
Natanael Copa's avatar
Natanael Copa committed
43
  status (stat, st)
44
  list-backup (lb) 
Natanael Copa's avatar
Natanael Copa committed
45
  revert
Natanael Copa's avatar
Natanael Copa committed
46
47
48
49
50
51
52
53
54

Common options:
 -h	Show help for subcommand.
 -q	Quiet mode.
 -v	Verbose mode.
"
	exit 1
}

Natanael Copa's avatar
Natanael Copa committed
55
56
cleanup() {
	local i
57
58
59
	for i in $REMOUNT_RO_LIST; do
		mount -o remount,ro $i
	done
Natanael Copa's avatar
Natanael Copa committed
60
61
62
63
64
65
66
67
68
69
	for i in $UMOUNT_LIST; do
		umount $i
	done
}

exit_clean() {
	cleanup
	exit 1
}

70
71
72
73
74
# check if given dir is not a mounted mountpoint
is_unmounted() {
	awk "\$2 == \"$1\" {exit 1}" /proc/mounts
}

Natanael Copa's avatar
Natanael Copa committed
75
mount_once() {
76
77
78
79
80
81
82
	if is_unmounted "$1"; then
		mount $1 && UMOUNT_LIST="$1 $UMOUNT_LIST" || return 1
	fi
}

# check if given dir is read-only
is_ro() {
83
	local tmpfile=$(mktemp -p "$1" 2>/dev/null)
84
85
86
87
88
89
90
91
92
93
	[ -z "$tmpfile" ] && return 0
	rm -f "$tmpfile"
	return 1
}

mount_once_rw() {
	mount_once "$1" || return 1
	if is_ro "$1"; then
		REMOUNT_RO_LIST="$1 $REMOUNT_RO_LIST"
		mount -o remount,rw "$1"
Natanael Copa's avatar
Natanael Copa committed
94
95
96
	fi
}

Natanael Copa's avatar
Natanael Copa committed
97
98
99
# create backupfile
backup_apkovl() {
	local outfile="$1"
100
	local d=$( date -u -r "$outfile" "+%Y%m%d%H%M%S" )
Natanael Copa's avatar
Natanael Copa committed
101
102
103
104
	local backup=$(echo "$outfile" | sed "s/\.apkovl\.tar\.gz/.$d.tar.gz/")
	vecho "Creating backup $backup"
	if [ -z "$DRYRUN" ]; then
		mv "$outfile" "$backup"
Natanael Copa's avatar
Natanael Copa committed
105
		APKOVL_BACKUP="$backup"
Natanael Copa's avatar
Natanael Copa committed
106
107
108
	fi
}

Natanael Copa's avatar
Natanael Copa committed
109
110
111
112
113
114
115
116
restore_apkovl() {
	local outfile="$1"
	if [ -n "$DRYRUN" ] || [ -z "$APKOVL_BACKUP" ]; then
		return 0
	fi
	mv "$APKOVL_BACKUP" "$outfile"
}

Natanael Copa's avatar
Natanael Copa committed
117
# verify we have openssl if we want to encrypt
118
119
120
check_openssl() {
	[ -z "$ENCRYPTION" ] && return 0
	OPENSSL=$(which openssl 2>/dev/null) || die "openssl was not found"
Natanael Copa's avatar
Natanael Copa committed
121

122
123
124
	$OPENSSL list-cipher-commands | grep "^$ENCRYPTION$" > /dev/null \
		|| die "Cipher $ENCRYPTION is not supported"
}
Natanael Copa's avatar
Natanael Copa committed
125
126
127
128
129
130
131
132
133

# list_add(char *listfile, char* file...)
list_add() {
	local list="$1"
	shift
	mkdir -p `dirname "$list"`
	while [ $# -gt 0 ] ; do
		filename=`echo "$1" | sed 's:^/\+::'`
		if grep "^$filename$" "$list" >/dev/null 2>&1 ; then
134
			vecho "$filename is already in $list."
Natanael Copa's avatar
Natanael Copa committed
135
		else
136
			vecho "Adding $filename to $list."
Natanael Copa's avatar
Natanael Copa committed
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
			echo "$filename" >> "$list"
		fi
		shift
	done
}

# list_delete(char *listfile, char *file...)
list_delete() {
	local list="$1"
	local tmp="$list.old"
	shift
	[ -f "$list" ] || return 1
	while [ $# -gt 0 ] ; do
		filename=`echo "$1" | sed 's:^/\+::'`
		mv "$list" "$tmp"
152
		vecho "Removing $filename from list."
Natanael Copa's avatar
Natanael Copa committed
153
154
155
156
157
158
		grep -v "^$filename$" "$tmp" > "$list"
		rm "$tmp"
		shift
	done
}

159
160
161
162
163
164
165
166
# unpack archive on LBU_MEDIA to given dir
unpack_apkovl() {
	local f="$(hostname).apkovl.tar.gz"
	local dest="$1"
	local mnt="/media/$LBU_MEDIA"
	local count=0
	mkdir -p "$dest"
	mount_once "$mnt"
167
168
169
	if [ -n "$ENCRYPTION" ]; then
		f="$f.$ENCRYPTION"
	fi	
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
	if [ ! -f "$mnt/$f" ]; then
		return 1
	fi
	if [ -z "$ENCRYPTION" ]; then
		tar -C "$dest" -zxf "$mnt/$f"
		return
	fi
	check_openssl
        while [ $count -lt 3 ]; do
		$OPENSSL enc -d -$ENCRYPTION -in "$mnt/$f" | tar \
			-C "$dest" -zx 2>/dev/null && return 0
		count=$(( $count + 1 ))
	done
	cleanup
	die "Failed to unpack $mnt/$f"
}		
186

Natanael Copa's avatar
Natanael Copa committed
187
188
189
190
191
#
# lbu_include - add/remove files to include list
#
usage_include() {
	echo "$PROGRAM $VERSION
Natanael Copa's avatar
Natanael Copa committed
192
Add filename(s) to include list ($sysconfdir/include)
193
194
195

usage: $PROGRAM include|inc|add [-rv] <file> ...
       $PROGRAM include|inc|add [-v] -l
Natanael Copa's avatar
Natanael Copa committed
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210

Options:
  -l	List contents of include list.
  -r	Remove specified file(s) from include list instead of adding.
  -v	Verbose mode.
"
	exit 1
}

cmd_include() {
	if [ "$LIST" ] ; then
		[ $# -gt 0 ] && usage_include
		show_include
		return
	fi
211

Natanael Copa's avatar
Natanael Copa committed
212
213
214
215
216
217
218
219
220
221
222
	[ $# -lt 1 ] && usage_include
	if [ "$REMOVE" ] ; then
		list_delete "$INCLUDE_LIST" "$@"
	else
		list_add "$INCLUDE_LIST" "$@"
		list_delete "$EXCLUDE_LIST" "$@"
	fi
}

show_include() {
	if [ -f "$INCLUDE_LIST" ] ; then
223
		vecho "Include files:"
Natanael Copa's avatar
Natanael Copa committed
224
225
226
227
		cat "$INCLUDE_LIST"
	fi
}

228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
#
# lbu_package - create a package
#
usage_package() {
	echo "$PROGRAM $VERSION
Create backup package.

usage: $PROGRAM package|pkg -v [<dirname>|<filename>]

Options:
  -v	Verbose mode.

If <dirname> is a directory, a package named <hostname>.apkovl.tar.gz will
be created in the specified directory.

If <filename> is specified, and is not a direcotry, a package with the
specified name willbe created.

246
If <dirname> nor <filename> is not specified, a package named
247
248
249
250
251
<hostname>.apkovl.tar.gz will be created in current work directory.
"
	exit 1
}

252
253
254
255
256
257
258
259
260
261
262
_gen_filelist() {
	apk audit --backup -q
	if [ -f var/lib/apk/world ]; then
		echo var/lib/apk/world
	fi
}

_gen_filelist_0() {
	_gen_filelist | tr '\n' '\0'
}

263
264
265
266
cmd_package() {
	local pkg="$1"
	local rc=0
	local owd="$PWD"
267
	local suff="apkovl.tar.gz"
Natanael Copa's avatar
Natanael Copa committed
268
	local tmpdir tmppkg tmpexclude tmpinclude
269
270

	check_openssl
Natanael Copa's avatar
Natanael Copa committed
271
	init_tmpdir tmpdir
272

273
	if [ -d "$LBU_PREPACKAGE" ]; then
274
		run-parts "$LBU_PREPACKAGE" >&2 || return 1
275
276
	fi

277
	[ -n "$ENCRYPTION" ] && suff="$suff.$ENCRYPTION"
278
279
280

	# find filename
	if [ -d "$pkg" ] ; then
281
		pkg="$pkg/$(hostname).$suff"
282
	elif [ -z "$pkg" ]; then
283
		pkg="$PWD/$(hostname).$suff"
284
285
	fi

Natanael Copa's avatar
Natanael Copa committed
286
	tmppkg="$tmpdir/$(basename $pkg)"
Natanael Copa's avatar
Natanael Copa committed
287
288
	tmpexclude="$tmpdir"/exclude
	tmpinclude="$tmpdir"/include
Natanael Copa's avatar
Natanael Copa committed
289

290
	cd "${ROOT:-/}"
291
	# remove old package.list
292
	if [ -f etc/lbu/packages.list ] && [ -f var/lib/apk/world ]; then
293
294
295
296
		echo "Note: Removing /etc/lbu/packages.list."
		echo "      /var/lib/apk/world will be used."
		rm -f etc/lbu/packages.list
	fi
297
	# create tar archive
Natanael Copa's avatar
Natanael Copa committed
298
299
300
301
302
303
304
305
306
307
	if [ -f "$EXCLUDE_LIST" ]; then
		# strip empty lines and lines with only whitespace
		sed -e '/^[[:space:]]*$/d' "$EXCLUDE_LIST" > $tmpexclude
		excl="-X $tmpexclude"
	fi
	if [ -f "$INCLUDE_LIST" ]; then
		# strip empty lines and lines with only whitespace
		sed -e '/^[[:space:]]*$/d' "$INCLUDE_LIST" > $tmpinclude
		incl="-T $tmpinclude"
	fi
Natanael Copa's avatar
Natanael Copa committed
308
309
310
311
	if [ -n "$VERBOSE" ]; then
		echo "Archiving the following files:" >&2
		# we dont want to mess the tar output with the
		# password prompt. Lets get the tar output first.
312
		_gen_filelist_0 | xargs -0 tar  $excl $incl -c -v > /dev/null
Natanael Copa's avatar
Natanael Copa committed
313
		rc=$?
Natanael Copa's avatar
Natanael Copa committed
314
315
316
	fi
	if [ $rc -eq 0 ]; then
		if [ -z "$ENCRYPTION" ]; then
317
318
			_gen_filelist_0 | xargs -0 tar $excl $incl -c \
				| gzip -c  >"$tmppkg"
Natanael Copa's avatar
Natanael Copa committed
319
			rc=$?
Natanael Copa's avatar
Natanael Copa committed
320
		else
Natanael Copa's avatar
Natanael Copa committed
321
322
			set -- enc "-$ENCRYPTION" -salt
			[ -n "$PASSWORD" ] && set -- "$@" -pass pass:"$PASSWORD"
323
324
			_gen_filelist_0 | xargs -0 tar $excl $incl -c \
				| gzip -c \
Natanael Copa's avatar
Natanael Copa committed
325
326
				| $OPENSSL "$@" > "$tmppkg"
			rc=$?
327
		fi
328
	fi
Natanael Copa's avatar
Natanael Copa committed
329
	cd "$owd"
Natanael Copa's avatar
Natanael Copa committed
330

Natanael Copa's avatar
Natanael Copa committed
331
	# actually commit unless dryrun mode
Natanael Copa's avatar
Natanael Copa committed
332
	if [ $rc -eq 0 ]; then
333
334
335
		if [ -z "$DRYRUN" ]; then
			if [ "x$pkg" = "x-" ]; then
				cat "$tmppkg"
336
337
			elif [ -b "$pkg" ] || [ -c "$pkg" ]; then
				cat "$tmppkg" > "$pkg"
338
			else
Natanael Copa's avatar
Natanael Copa committed
339
340
341
342
343
344
345
				if cp "$tmppkg" "$pkg.new"; then
					mv "$pkg.new" "$pkg"
					rc=$?
				else
					rm -f "$pkg.new"
					rc=1
				fi
346
347
			fi
		fi
Natanael Copa's avatar
Natanael Copa committed
348
		[ $rc -eq 0 ] && vecho "Created $pkg"
Natanael Copa's avatar
Natanael Copa committed
349
	fi
350
	if [ -d "$LBU_POSTPACKAGE" ]; then
351
		run-parts "$LBU_POSTPACKAGE" >&2
352
	fi
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
	return $rc
}

#
# lbu list - list files that would go to archive
#
usage_list() {
	echo "$PROGRAM $VERSION
Lists files that would go to tar package. Same as: 'lbu package -v /dev/null'

usage: $PROGRAM list|ls
"
	exit 1
}

cmd_list() {
	VERBOSE="-v"
370
	DRYRUN="-n"
371
	ENCRYPTION=
372
373
	cmd_package /dev/null
}
Natanael Copa's avatar
Natanael Copa committed
374
375
376
377
378
379

#
# lbu_commit - commit config files to writeable media
#
usage_commit() {
	echo "$PROGRAM $VERSION
380
381
382
Create a backup of config to writeable media.

usage: $PROGRAM commit|ci [-nv] [<media>]
Natanael Copa's avatar
Natanael Copa committed
383
384

Options:
Natanael Copa's avatar
Natanael Copa committed
385
  -d	Remove old apk overlay files.
386
  -e	Protect configuration with a password.
Natanael Copa's avatar
Natanael Copa committed
387
  -n	Don't commit, just show what would have been commited.
Natanael Copa's avatar
Natanael Copa committed
388
  -p <password>	Give encryption password on the command-line
Natanael Copa's avatar
Natanael Copa committed
389
390
391
392
  -v	Verbose mode.

The following values for <media> is supported: floppy usb
If <media> is not specified, the environment variable LBU_MEDIA will be used.
Natanael Copa's avatar
Natanael Copa committed
393

394
Password protection will use $DEFAULT_CIPHER encryption. Other ciphers can be
Natanael Copa's avatar
Natanael Copa committed
395
396
397
used by setting the DEFAULT_CIPHER or ENCRYPTION environment variables.
For possible ciphers, try: openssl -v

Natanael Copa's avatar
Natanael Copa committed
398
399
The password used to encrypt the file, can either be specified with the -p
option or using the PASSWORD environment variable.
400

Jeremy Thomerson's avatar
Jeremy Thomerson committed
401
The environment variables can also be set in $LBU_CONF
Natanael Copa's avatar
Natanael Copa committed
402
403
404
405
406
"
	exit 1
}

cmd_commit() {
407
	local media mnt statuslist tmplist
408
409
410
411
	local incl excl outfile ovls lines

	check_openssl

Natanael Copa's avatar
Natanael Copa committed
412
413
414
	# turn on verbose mode if dryrun
	[ -n "$DRYRUN" ] && VERBOSE="-v"

415
	# find what media to use
Natanael Copa's avatar
Natanael Copa committed
416
	media="${1:-$LBU_MEDIA}"
Natanael Copa's avatar
Natanael Copa committed
417
418
	[ -z "$media" ] && usage_commit

419
	# mount media unles its already mounted
Natanael Copa's avatar
Natanael Copa committed
420
	mnt=/media/$media
Natanael Copa's avatar
Natanael Copa committed
421
	[ -d "$mnt" ] || usage
422
	mount_once_rw "$mnt" || die "failed to mount $mnt"
Natanael Copa's avatar
Natanael Copa committed
423

Natanael Copa's avatar
Natanael Copa committed
424
425
426
427
428
429
430
	# find the outfile
	outfile="$mnt/$(hostname).apkovl.tar.gz"
	if [ -n "$ENCRYPTION" ]; then
		outfile="$outfile.$ENCRYPTION"
	fi

	# remove old config files
431
	if [ -n "$DELETEOLDCONFIGS" ] ; then
Natanael Copa's avatar
Natanael Copa committed
432
433
434
435
		local rmfiles=$(ls "$mnt/"*.apkovl.tar.gz* 2>/dev/null)
		if [ -n "$rmfiles" ] ; then
			if [ -n "$VERBOSE" ]; then
				echo "Removing old apk overlay files:" >&2
436
				echo "$rmfiles"
Natanael Copa's avatar
Natanael Copa committed
437
				echo "" >&2
438
			fi
Natanael Copa's avatar
Natanael Copa committed
439
			[ -z "$DRYRUN" ] && rm "$mnt/"*.apkovl.tar.gz*
440
441
		fi
	else
Natanael Copa's avatar
Natanael Copa committed
442
       		lines=$(ls -1 "$mnt"/*.apkovl.tar.gz* 2>/dev/null)
Natanael Copa's avatar
Natanael Copa committed
443
		if [ "$lines" = "$outfile" ]; then
Natanael Copa's avatar
Natanael Copa committed
444
			backup_apkovl "$outfile"
Natanael Copa's avatar
Natanael Copa committed
445
		elif [ -n "$lines" ]; then
446
	               	# More then one apkovl, this is a security concern
Natanael Copa's avatar
Natanael Copa committed
447
			cleanup
Natanael Copa's avatar
Natanael Copa committed
448
449
450
451
			eecho "The following apkovl file(s) were found:"
			eecho "$lines"
			eecho ""
	               	die "Please use -d to replace."
452
		fi
Natanael Copa's avatar
Natanael Copa committed
453
	fi
454
455
456

	# create package
	if ! cmd_package "$outfile"; then
Natanael Copa's avatar
Natanael Copa committed
457
		restore_apkovl "$outfile"
Natanael Copa's avatar
Natanael Copa committed
458
		cleanup
Natanael Copa's avatar
Natanael Copa committed
459
		die "Problems creating archive. aborting"
460
	fi
Natanael Copa's avatar
Natanael Copa committed
461

462
463
	# delete old backups if needed
	# poor mans 'head -n -N' done with awk.
464
	ls "$mnt"/$(hostname).[0-9][0-9][0-9][0-9]*[0-9].tar.gz 2>/dev/null \
465
466
467
468
469
470
471
		| awk '{ a[++i] = $0; } END { 
			print a[0]; 
			while (i-- > '"${BACKUP_LIMIT:-0}"') { 
				print a[++j] 
			}
		}' | xargs rm 2>/dev/null

Natanael Copa's avatar
Natanael Copa committed
472
	# remove obsolete file. some older version of alpine needs this
473
	# to be able to upgrade
474
475
	if [ -z "$DRYRUN" ] && [ -f $mnt/packages.list ]; then
		echo "Note: Removing packages.list from $(basename $mnt)."
476
		echo "      /var/lib/apk/world will be used."
477
478
		rm -f $mnt/packages.list
	fi
Natanael Copa's avatar
Natanael Copa committed
479

Natanael Copa's avatar
Natanael Copa committed
480
	# make sure data is written
Natanael Copa's avatar
Natanael Copa committed
481
	sync
Natanael Copa's avatar
Natanael Copa committed
482
	[ "$media" = "floppy" ] && sleep 1
Natanael Copa's avatar
Natanael Copa committed
483
484

	# move current to commited.
485
	vecho "Successfully saved apk overlay files"
Natanael Copa's avatar
Natanael Copa committed
486
487
488
489
490
491
492
}

#---------------------------------------------------------------------------
# lbu_exclude - add remove file(s) from exclude list

usage_exclude() {
	echo "$PROGRAM $VERSION
Natanael Copa's avatar
Natanael Copa committed
493
Add filename(s) to exclude list ($sysconfdir/exclude)
494
495
496

usage: $PROGRAM exclude|ex|delete [-rv] <file> ...
       $PROGRAM exclude|ex|delete [-v] -l
Natanael Copa's avatar
Natanael Copa committed
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511

Options:
  -l	List contents of exclude list.
  -r	Remove specified file(s) from exclude list instead of adding.
  -v	Verbose mode.
"
	exit 1
}

cmd_exclude() {
	if [ "$LIST" ] ; then
		[ $# -gt 0 ] && usage_exclude
		show_exclude
		return
	fi
512

Natanael Copa's avatar
Natanael Copa committed
513
514
515
516
517
518
519
520
521
522
523
	[ $# -lt 1 ] && usage_exclude
	if [ "$REMOVE" ] ; then
		list_delete "$EXCLUDE_LIST" "$@"
	else
		list_delete "$INCLUDE_LIST" "$@"
		list_add "$EXCLUDE_LIST" "$@"
	fi
}

show_exclude() {
	if [ -f "$EXCLUDE_LIST" ] ; then
524
		vecho "Exclude files:"
Natanael Copa's avatar
Natanael Copa committed
525
		cat "$EXCLUDE_LIST"
526
	fi
Natanael Copa's avatar
Natanael Copa committed
527
528
}

Natanael Copa's avatar
Natanael Copa committed
529
#---------------------------------------------------------------------------
530
# lbu_listbackup - Show old commits
531
usage_listbackup() {
Natanael Copa's avatar
Natanael Copa committed
532
533
534
535
	cat <<EOF
$PROGRAM $VERSION
Show old commits.

536
usage: $PROGRAM list-backup [<media>]
Natanael Copa's avatar
Natanael Copa committed
537
538
539
540
541

EOF
	exit 1
}

542
cmd_listbackup() {
Natanael Copa's avatar
Natanael Copa committed
543
544
	local media=${1:-"$LBU_MEDIA"}
	local mnt="/media/$media"
Natanael Copa's avatar
Natanael Copa committed
545
	[ -z "$media" ] && usage_listbackup
Natanael Copa's avatar
Natanael Copa committed
546
547
548
549
550
551
552
553

	mount_once "$mnt" || die "failed to mount $mnt"
	ls -1 "$mnt"/*.[0-9][0-9]*[0-9][0-9].tar.gz* 2>/dev/null | sed 's:.*/::'
}

#---------------------------------------------------------------------------
# lbu_revert - revert to old config
usage_revert() {
Natanael Copa's avatar
Natanael Copa committed
554
555
556
557
558
559
	cat <<EOF
$PROGRAM $VERSION
Revert to older commit.

usage: $PROGRAM revert <REVISION> [<media>]

Natanael Copa's avatar
Natanael Copa committed
560
The revision should be one of the files listed by 'lbu list-backup'.
Natanael Copa's avatar
Natanael Copa committed
561

Natanael Copa's avatar
Natanael Copa committed
562
EOF
Natanael Copa's avatar
Natanael Copa committed
563
564
565
566
}

cmd_revert() {
	local media=${2:-"$LBU_MEDIA"}
Natanael Copa's avatar
Natanael Copa committed
567
568
569
570
571
572
	[ -z "$media" ] && usage_revert
	local mnt="/media/$media"
	local revertto="$mnt/$1"
	local current="$mnt/$(hostname).apkovl.tar.gz"

	if [ -n "$ENCRYPTION" ]; then
573
		current="$current.$ENCRYPTION"
Natanael Copa's avatar
Natanael Copa committed
574
	fi
575
	mount_once_rw "$mnt" || die "failed to mount $mnt"
Natanael Copa's avatar
Natanael Copa committed
576
	[ -f "$revertto" ] || die "file not found: $revertto"
577
	backup_apkovl "$current"
Natanael Copa's avatar
Natanael Copa committed
578
	vecho "Reverting to $1"
579
	[ -z "$DRYRUN" ] && mv "$revertto" "$current"
Natanael Copa's avatar
Natanael Copa committed
580
581
}

Natanael Copa's avatar
Natanael Copa committed
582
583
584
585
586
587
#---------------------------------------------------------------------------
# lbu_status - check what files have been changed since last save
usage_status() {
	echo "$PROGRAM $VERSION
Check what files have been changed since last commit.

588
usage: $PROGRAM status|st [-av]
Natanael Copa's avatar
Natanael Copa committed
589
590
591
592
593
594
595
596

Options:
  -a	Compare all files, not just since last commit.
  -v	Also show include and exclude lists.
"
	exit 1
}

597
598
599
600
601
cmd_status() {
	if [ -n "$USE_DEFAULT" ]; then
		apk audit --backup
		return 0
	fi
602
603
604
605
	LBU_MEDIA=${1:-"$LBU_MEDIA"}
	[ -z "$LBU_MEDIA" ] && usage_status
	local tmp
	init_tmpdir tmp
606
	mkdir -p "$tmp/a" "$tmp/b"
607
608
609
610

	# unpack last commited apkovl to tmpdir/a
	unpack_apkovl "$tmp/a"

611
	# generate new apkovl and extract to tmpdir/b
612
613
	local save_encryption="$ENCRYPTION"
	ENCRYPTION=
614
	cmd_package - | tar -C "$tmp/b" -zx
615
	ENCRYPTION="$save_encryption"
616

617
	# show files that exists in a but not in b as deleted
618
619
620
	local f
	( cd "$tmp"/a && find ) | while read f; do
		f=${f#./}
621
622
623
624
625
		local b="$tmp/b/$f"
		if [ "$f" = "." ] || [ -e "$b" ] || [ -L "$b" ]; then
			continue
		fi
		echo "D $f"
626
627
	done
	
628
	# compare files in b with files in a
629
630
631
632
633
	( cd "$tmp"/b && find ) | while read f; do
		f=${f#./}
		[ "$f" = "." ] && continue
		local a="$tmp/a/$f"
		local b="$tmp/b/$f"
634
		if [ ! -e "$a" ] && [ ! -L "$a" ]; then
635
			echo "A $f"
Natanael Copa's avatar
Natanael Copa committed
636
637
		elif [ -f "$a" ] && [ -f "$b" ] && [ "$b" -nt "$a" ] \
		     && ! cmp -s "$a" "$b"; then
638
639
640
			echo "U $f"
		fi
	done
641
642
}

Natanael Copa's avatar
Natanael Copa committed
643

644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
#-----------------------------------------------------------
# lbu_diff - run a diff against last commit
usage_diff() {
	echo "$PROGRAM $VERSION
Run a diff against last commit

usage: $PROGRAM diff [<media>]
"
	exit 1
}

cmd_diff() {
	LBU_MEDIA=${1:-"$LBU_MEDIA"}
	[ -z "$LBU_MEDIA" ] && usage_diff
	local tmp
	init_tmpdir tmp
	mkdir -p "$tmpdir/a" "$tmp/b"
	unpack_apkovl "$tmp/a"
662
	ENCRYPTION=
663
664
665
666
667
	cmd_package - | tar -C "$tmp/b" -zx
	cd "$tmp" && diff -ruN a b 
}
	

Natanael Copa's avatar
Natanael Copa committed
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684

#-----------------------------------------------------------
# Main

cmd=`echo "$PROGRAM" | cut -s -d_ -f2`
PROGRAM=`echo "$PROGRAM" | cut -d_ -f1`
if [ -z "$cmd" ] ; then
	cmd="$1"
	[ -z "$cmd" ] && usage
	shift
fi

# check for valid sub command
case "$cmd" in
	include|inc|add)	SUBCMD="include";;
	commit|ci)		SUBCMD="commit";;
	exclude|ex|delete)	SUBCMD="exclude";;
685
686
	list|ls)		SUBCMD="list";;
	package|pkg)		SUBCMD="package";;
Natanael Copa's avatar
Natanael Copa committed
687
	status|stat|st)		SUBCMD="status";;
688
	list-backup|lb)		SUBCMD="listbackup";;
Natanael Copa's avatar
Natanael Copa committed
689
	revert)			SUBCMD="revert";;
690
	diff)			SUBCMD="diff";;
Natanael Copa's avatar
Natanael Copa committed
691
692
693
694
	*)			usage;;
esac

# parse common args
695
while getopts "adehlM:np:qrv" opt ; do
Natanael Copa's avatar
Natanael Copa committed
696
697
698
699
	case "$opt" in
		a) 	[ $SUBCMD = status ] || usage_$SUBCMD
			USE_DEFAULT="-a"
			;;
700
701
		d)	DELETEOLDCONFIGS="yes"
			;;
702
		e)	[ -z "$ENCRYPTION" ] && ENCRYPTION="$DEFAULT_CIPHER"
703
			;;
Natanael Copa's avatar
Natanael Copa committed
704
705
706
707
708
709
710
		h) 	usage_$SUBCMD
			;;
		l)	LIST="-l"
			;;
		n) 	[ $SUBCMD = commit ] || usage_$SUBCMD
			DRYRUN="-n"
			;;
711
712
		p)	PASSWORD="$OPTARG"
			;;
Natanael Copa's avatar
Natanael Copa committed
713
714
715
716
717
718
719
720
721
		q)	QUIET="$QUIET -q"
			;;
		r)	REMOVE="-r"
			;;
		v) 	VERBOSE="$VERBOSE -v"
			;;
	esac
done
shift `expr $OPTIND - 1`
722

Natanael Copa's avatar
Natanael Copa committed
723
trap exit_clean SIGINT SIGTERM
724
cmd_$SUBCMD "$@"
Natanael Copa's avatar
Natanael Copa committed
725
726
727
retcode=$?

cleanup
Natanael Copa's avatar
Natanael Copa committed
728
exit $retcode