summaryrefslogtreecommitdiffstats
path: root/scripts/repo-add.sh.in
blob: 87c7834f99af9a1f9e76e8aabbc3bb969202ec09 (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
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
#!@BASH_SHELL@
#
#   repo-add - add a package to a given repo database file
#   repo-remove - remove a package entry from a given repo database file
#   @configure_input@
#
#   Copyright (c) 2006-2008 Aaron Griffin <aaron@archlinux.org>
#   Copyright (c) 2007-2008 Dan McGee <dan@archlinux.org>
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.

# gettext initialization
export TEXTDOMAIN='pacman'
export TEXTDOMAINDIR='@localedir@'

myver='@PACKAGE_VERSION@'
confdir='@sysconfdir@'

QUIET=0
DELTA=0
WITHFILES=0
REPO_DB_FILE=
LOCKFILE=
CLEAN_LOCK=0

# ensure we have a sane umask set
umask 0022

msg() {
	(( QUIET )) && return
	local mesg=$1; shift
	printf "==> ${mesg}\n" "$@" >&1
}

msg2() {
	(( QUIET )) && return
	local mesg=$1; shift
	printf "  -> ${mesg}\n" "$@" >&1
}

warning() {
	local mesg=$1; shift
	printf "==> $(gettext "WARNING:") ${mesg}\n" "$@" >&2
}

error() {
	local mesg=$1; shift
	printf "==> $(gettext "ERROR:") ${mesg}\n" "$@" >&2
}

# print usage instructions
usage() {
	printf "repo-add, repo-remove (pacman) %s\n\n" "$myver"
	printf "$(gettext "Usage: repo-add [-d] [-f] [-q] <path-to-db> <package|delta> ...\n")"
	printf "$(gettext "Usage: repo-remove [-q] <path-to-db> <packagename|delta> ...\n\n")"
	printf "$(gettext "\
repo-add will update a package database by reading a package file.\n\
Multiple packages to add can be specified on the command line.\n\n")"
	printf "$(gettext "\
repo-remove will update a package database by removing the package name\n\
specified on the command line from the given repo database. Multiple\n\
packages to remove can be specified on the command line.\n\n")"
	printf "$(gettext "\
Use the -q/--quiet flag to minimize output to basic messages, warnings,\n\
and errors.\n\n")"
	printf "$(gettext "\
Use the -d/--delta flag to automatically generate and add a delta file\n\
between the old entry and the new one, if the old package file is found\n\
next to the new one.\n\n")"
	printf "$(gettext "\
Use the -f/--files flag to update a database including file entries.\n\n")"
	echo "$(gettext "Example:  repo-add /path/to/repo.db.tar.gz pacman-3.0.0.pkg.tar.gz")"
	echo "$(gettext "Example:  repo-remove /path/to/repo.db.tar.gz kernel26")"
}

version() {
	printf "repo-add, repo-remove (pacman) %s\n\n" "$myver"
	printf "$(gettext "\
Copyright (C) 2006-2008 Aaron Griffin <aaron@archlinux.org>.\n\
Copyright (c) 2007-2008 Dan McGee <dan@archlinux.org>.\n\n\
This is free software; see the source for copying conditions.\n\
There is NO WARRANTY, to the extent permitted by law.\n")"
}

# write a list entry
#		arg1 - Entry name
#		arg2 - List
#		arg3 - File to write to
write_list_entry() {
	if [[ -n $2 ]]; then
		echo "%$1%" >>$3
		echo -e $2 >>$3
	fi
}

find_pkgentry()
{
	local pkgname=$1
	local pkgentry
	for pkgentry in $tmpdir/$pkgname*; do
		name=${pkgentry##*/}
		if [[ ${name%-*-*} = $pkgname ]]; then
			echo $pkgentry
			return 0
		fi
	done
	return 1
}

# Get the package name from the delta filename
get_delta_pkgname() {
	local tmp

	tmp=${1##*/}
	echo ${tmp%-*-*_to*}
}

# write a delta entry
#   arg1 - path to delta file
db_write_delta()
{
	deltafile="$1"
	pkgname="$(get_delta_pkgname $deltafile)"

	pkgentry=$(find_pkgentry $pkgname)
	if [[ -z $pkgentry ]]; then
		error "$(gettext "No database entry for package '%s'.")" "$pkgname"
		return 1
	fi
	deltas="$pkgentry/deltas"
	if [[ ! -f $deltas ]]; then
		echo -e "%DELTAS%" >$deltas
	fi
	# get md5sum and compressed size of package
	md5sum="$(openssl dgst -md5 "$deltafile")"
	md5sum="${md5sum##* }"
	csize=$(@SIZECMD@ "$deltafile")

	oldfile=$(xdelta3 printhdr $deltafile | grep "XDELTA filename (source)" | sed 's/.*: *//')
	newfile=$(xdelta3 printhdr $deltafile | grep "XDELTA filename (output)" | sed 's/.*: *//')

	if grep -q "$oldfile.*$newfile" $deltas; then
		sed -i.backup "/$oldfile.*$newfile/d" $deltas && rm -f $deltas.backup
	fi
	msg2 "$(gettext "Adding 'deltas' entry : %s -> %s")" "$oldfile" "$newfile"
	echo ${deltafile##*/} $md5sum $csize $oldfile $newfile >> $deltas

	return 0
} # end db_write_delta

# remove a delta entry
#   arg1 - path to delta file
db_remove_delta()
{
	deltafile="$1"
	filename=${deltafile##*/}
	pkgname="$(get_delta_pkgname $deltafile)"

	pkgentry=$(find_pkgentry $pkgname)
	if [[ -z $pkgentry ]]; then
		return 1
	fi
	deltas="$pkgentry/deltas"
	if [[ ! -f $deltas ]]; then
		return 1
	fi
	if grep -q "$filename" $deltas; then
		sed -i.backup "/$filename/d" $deltas && rm -f $deltas.backup
		msg2 "$(gettext "Removing existing entry '%s'...")" "$filename"
		return 0
	fi

	return 1
} # end db_remove_delta

# write an entry to the pacman database
#   arg1 - path to package
db_write_entry()
{
	# blank out all variables
	local pkgfile="$1"
	local pkgname pkgver pkgdesc epoch csize size md5sum url arch builddate packager force \
		_groups _licenses _replaces _depends _conflicts _provides _optdepends

	local OLDIFS="$IFS"
	# IFS (field separator) is only the newline character
	IFS="
"

	# read info from the zipped package
	local line var val
	for line in $(bsdtar -xOqf "$pkgfile" .PKGINFO |
			grep -v '^#' | sed 's|\(\w*\)\s*=\s*\(.*\)|\1 \2|'); do
		# bash awesomeness here- var is always one word, val is everything else
		var=${line%% *}
		val=${line#* }
		declare $var="$val"
		case "$var" in
			group)    _groups="$_groups$group\n" ;;
			license)  _licenses="$_licenses$license\n" ;;
			replaces) _replaces="$_replaces$replaces\n" ;;
			depend)   _depends="$_depends$depend\n" ;;
			conflict) _conflicts="$_conflicts$conflict\n" ;;
			provides) _provides="$_provides$provides\n" ;;
			optdepend) _optdepends="$_optdepends$optdepend\n" ;;
		esac
	done

	IFS=$OLDIFS

	# get md5sum and compressed size of package
	md5sum="$(openssl dgst -md5 "$pkgfile")"
	md5sum="${md5sum##* }"
	csize=$(@SIZECMD@ "$pkgfile")

	# ensure $pkgname and $pkgver variables were found
	if [[ -z $pkgname || -z $pkgver ]]; then
		error "$(gettext "Invalid package file '%s'.")" "$pkgfile"
		return 1
	fi

	pushd "$tmpdir" >/dev/null
	if [[ -d $pkgname-$pkgver ]]; then
		warning "$(gettext "An entry for '%s' already existed")" "$pkgname-$pkgver"
	else
		if [ $DELTA -eq 1 ]; then
			pkgentry=$(find_pkgentry $pkgname)
			if [ -n "$pkgentry" ]; then
				local oldfilename=$(grep -A1 FILENAME $pkgentry/desc | tail -n1)
				local oldfile="$(dirname $1)/$oldfilename"
			fi
		fi
	fi

	# remove an existing entry if it exists, ignore failures
	db_remove_entry "$pkgname"

	# create package directory
	mkdir "$pkgname-$pkgver"
	pushd "$pkgname-$pkgver" >/dev/null

	# restore an eventual deltas file
	[[ -f ../$pkgname.deltas ]] && mv "../$pkgname.deltas" deltas

	# create desc entry
	msg2 "$(gettext "Creating 'desc' db entry...")"
	echo -e "%FILENAME%\n$(basename "$1")\n" >>desc
	echo -e "%NAME%\n$pkgname\n" >>desc
	[[ -n $pkgbase ]] && echo -e "%BASE%\n$pkgbase\n" >>desc
	echo -e "%VERSION%\n$pkgver\n" >>desc
	[[ -n $pkgdesc ]] && echo -e "%DESC%\n$pkgdesc\n" >>desc
	write_list_entry "GROUPS" "$_groups" "desc"
	[[ -n $csize ]] && echo -e "%CSIZE%\n$csize\n" >>desc
	[[ -n $size ]] && echo -e "%ISIZE%\n$size\n" >>desc

	# compute checksums
	msg2 "$(gettext "Computing md5 checksums...")"
	echo -e "%MD5SUM%\n$md5sum\n" >>desc

	[[ -n $url ]] && echo -e "%URL%\n$url\n" >>desc
	write_list_entry "LICENSE" "$_licenses" "desc"
	[[ -n $arch ]] && echo -e "%ARCH%\n$arch\n" >>desc
	[[ -n $builddate ]] && echo -e "%BUILDDATE%\n$builddate\n" >>desc
	[[ -n $packager ]] && echo -e "%PACKAGER%\n$packager\n" >>desc
	write_list_entry "REPLACES" "$_replaces" "desc"
	# remain backward-compatible for now; put a force entry in the database
	if [[ -n $epoch ]]; then
		echo -e "%EPOCH%\n#epoch\n" >>desc
		echo -e "%FORCE%\n" >>desc
	fi
	[[ -n $force ]] && echo -e "%FORCE%\n" >>desc

	# create depends entry
	msg2 "$(gettext "Creating 'depends' db entry...")"
	# create the file even if it will remain empty
	touch "depends"
	write_list_entry "DEPENDS" "$_depends" "depends"
	write_list_entry "CONFLICTS" "$_conflicts" "depends"
	write_list_entry "PROVIDES" "$_provides" "depends"
	write_list_entry "OPTDEPENDS" "$_optdepends" "depends"

	popd >/dev/null
	popd >/dev/null

	# create files file if wanted
	if (( WITHFILES )); then
		msg2 "$(gettext "Creating 'files' db entry...")"
		local files_path="$tmpdir/$pkgname-$pkgver/files"
		echo "%FILES%" >$files_path
		bsdtar --exclude='.*' -tf "$pkgfile" >>$files_path
	fi

	# create a delta file
	if [ -n "$oldfilename" ]; then
		if [ -f "$oldfile" ]; then
			delta=$(pkgdelta -q $oldfile $1)
			if [ -f "$delta" ]; then
				db_write_delta $delta
			fi
		else
			warning "$(gettext "Old package file not found: %s")" "$oldfilename"
		fi
	fi

	return 0
} # end db_write_entry

# remove existing entries from the DB
#   arg1 - package name
db_remove_entry() {
	local pkgname=$1
	local notfound=1
	local pkgentry=$(find_pkgentry $pkgname)
	while [[ -n $pkgentry ]]; do
		notfound=0
		if [[ -f $pkgentry/deltas ]]; then
			mv "$pkgentry/deltas" "$tmpdir/$pkgname.deltas"
		fi
		msg2 "$(gettext "Removing existing entry '%s'...")" \
		"$(basename $pkgentry)"
		rm -rf $pkgentry
		pkgentry=$(find_pkgentry $pkgname)
	done
	return $notfound
} # end db_remove_entry

check_repo_db()
{
	# check lock file
	if ( set -o noclobber; echo "$$" > "$LOCKFILE") 2> /dev/null; then
		CLEAN_LOCK=1
	else
		error "$(gettext "Failed to acquire lockfile: %s.")" "$LOCKFILE"
		[[ -f $LOCKFILE ]] && error "$(gettext "Held by process %s")" "$(cat $LOCKFILE)"
		exit 1
	fi

	if [[ -f $REPO_DB_FILE ]]; then
		# there are two situations we can have here- a DB with some entries,
		# or a DB with no contents at all.
		if ! bsdtar -tqf "$REPO_DB_FILE" '*/desc' >/dev/null 2>&1; then
			# check empty case
			if [[ -n $(bsdtar -tqf "$REPO_DB_FILE" '*' 2>/dev/null) ]]; then
				error "$(gettext "Repository file '%s' is not a proper pacman database.")" "$REPO_DB_FILE"
				exit 1
			fi
		fi
		msg "$(gettext "Extracting database to a temporary location...")"
		bsdtar -xf "$REPO_DB_FILE" -C "$tmpdir"
	else
		case "$cmd" in
			repo-remove)
			error "$(gettext "Repository file '%s' was not found.")" "$REPO_DB_FILE"
			exit 1
			;;
			repo-add)
			# check if the file can be created (write permission, directory existence, etc)
			if ! touch "$REPO_DB_FILE"; then
				error "$(gettext "Repository file '%s' could not be created.")" "$REPO_DB_FILE"
				exit 1
			fi
			rm -f "$REPO_DB_FILE"
			;;
		esac
	fi
}

add()
{
	if [[ ! -f $1 ]]; then
		error "$(gettext "File '%s' not found.")" "$1"
		return 1
	fi

	if [[ ${1##*.} == "delta" ]]; then
		deltafile=$1
		msg "$(gettext "Adding delta '%s'")" "$deltafile"
		if ! type xdelta3 &>/dev/null; then
			error "$(gettext "Cannot find the xdelta3 binary! Is xdelta3 installed?")"
			exit 1
		fi
		if db_write_delta "$deltafile"; then
			return 0
		else
			return 1
		fi
	fi

	pkgfile=$1
	if ! bsdtar -tqf "$pkgfile" .PKGINFO >/dev/null 2>&1; then
		error "$(gettext "'%s' is not a package file, skipping")" "$pkgfile"
		return 1
	fi

	msg "$(gettext "Adding package '%s'")" "$pkgfile"

	db_write_entry "$pkgfile"
}

remove()
{
	if [[ ${1##*.} == "delta" ]]; then
		deltafile=$1
		msg "$(gettext "Searching for delta '%s'...")" "$deltafile"
		if db_remove_delta "$deltafile"; then
			return 0
		else
			error "$(gettext "Delta matching '%s' not found.")" "$deltafile"
			return 1
		fi
	fi

	pkgname=$1
	msg "$(gettext "Searching for package '%s'...")" "$pkgname"

	if db_remove_entry "$pkgname"; then
		rm -f "$tmpdir/$pkgname.deltas"
		return 0
	else
		error "$(gettext "Package matching '%s' not found.")" "$pkgname"
		return 1
	fi
}

trap_exit()
{
	echo
	error "$@"
	exit 1
}

clean_up() {
	local exit_code=$?

	[[ -d $tmpdir ]] && rm -rf "$tmpdir"
	(( CLEAN_LOCK )) && [[ -f $LOCKFILE ]] && rm -f "$LOCKFILE"

	exit $exit_code
}

# PROGRAM START

# determine whether we have gettext; make it a no-op if we do not
if ! type gettext &>/dev/null; then
	gettext() {
		echo "$@"
	}
fi

case "$1" in
	-h|--help) usage; exit 0;;
	-V|--version) version; exit 0;;
esac

# figure out what program we are
cmd="$(basename $0)"
if [[ $cmd != "repo-add" && $cmd != "repo-remove" ]]; then
	error "$(gettext "Invalid command name '%s' specified.")" "$cmd"
	exit 1
fi

tmpdir=$(mktemp -d /tmp/repo-tools.XXXXXXXXXX) || (\
	error "$(gettext "Cannot create temp directory for database building.")"; \
	exit 1)

trap 'clean_up' EXIT
trap 'trap_exit "$(gettext "TERM signal caught. Exiting...")"' TERM HUP QUIT
trap 'trap_exit "$(gettext "Aborted by user! Exiting...")"' INT
trap 'trap_exit "$(gettext "An unknown error has occured. Exiting...")"' ERR

success=0
# parse arguments
for arg in "$@"; do
	case "$arg" in
		-q|--quiet) QUIET=1;;
		-d|--delta) DELTA=1;;
		-f|--files) WITHFILES=1;;
		*)
			if [[ -z $REPO_DB_FILE ]]; then
				REPO_DB_FILE="$arg"
				LOCKFILE="$REPO_DB_FILE.lck"
				check_repo_db
			else
				case "$cmd" in
					repo-add) add $arg && success=1 ;;
					repo-remove) remove $arg && success=1 ;;
				esac
			fi
			;;
	esac
done

# if at least one operation was a success, re-zip database
if (( success )); then
	msg "$(gettext "Creating updated database file '%s'")" "$REPO_DB_FILE"

	case "$REPO_DB_FILE" in
		*tar.gz)  TAR_OPT="z" ;;
		*tar.bz2) TAR_OPT="j" ;;
		*tar.xz)  TAR_OPT="J" ;;
		*) warning "$(gettext "'%s' does not have a valid archive extension.")" \
		"$REPO_DB_FILE" ;;
	esac

	filename=$(basename "$REPO_DB_FILE")

	pushd "$tmpdir" >/dev/null
	if [[ -n $(ls) ]]; then
		bsdtar -c${TAR_OPT}f "$filename" *
	else
		# we have no packages remaining? zip up some emptyness
		warning "$(gettext "No packages remain, creating empty database.")"
		bsdtar -c${TAR_OPT}f "$filename" -T /dev/null
	fi
	popd >/dev/null

	[[ -f $REPO_DB_FILE ]] && mv -f "$REPO_DB_FILE" "${REPO_DB_FILE}.old"
	[[ -f $tmpdir/$filename ]] && mv "$tmpdir/$filename" "$REPO_DB_FILE"
	dblink="${REPO_DB_FILE%.tar.*}"
	target=${REPO_DB_FILE##*/}
	ln -sf "$target" "$dblink" 2>/dev/null || \
		ln -f "$target" "$dblink" 2>/dev/null || \
		cp "$REPO_DB_FILE" "$dblink"
else
	msg "$(gettext "No packages modified, nothing to do.")"
	exit 1
fi

exit 0
# vim: set ts=2 sw=2 noet: