summaryrefslogtreecommitdiffstats
path: root/bin/reproducible_build.sh
blob: cb8fd6f7971f6d2756d07216be6a108b4d68361d (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
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
#!/bin/bash

# Copyright 2014-2015 Holger Levsen <holger@layer-acht.org>
#         © 2015 Mattia Rizzolo <mattia@mapreri.org>
# released under the GPLv=2

DEBUG=false
. /srv/jenkins/bin/common-functions.sh
common_init "$@"

# common code defining db access
. /srv/jenkins/bin/reproducible_common.sh

set -e

# sleep 1-23 secs to randomize start times
delay_start() {
	/bin/sleep $(echo "scale=1 ; $(shuf -i 1-230 -n 1)/10" | bc )
}

create_results_dirs() {
	mkdir -vp $BASE/dbd/${SUITE}/${ARCH}
	mkdir -vp $BASE/dbdtxt/${SUITE}/${ARCH}
	mkdir -vp $BASE/logs/${SUITE}/${ARCH}
	mkdir -vp $BASE/logdiffs/${SUITE}/${ARCH}
	mkdir -vp $BASE/rbuild/${SUITE}/${ARCH}
	mkdir -vp $BASE/buildinfo/${SUITE}/${ARCH}
}

handle_race_condition() {
	echo | tee -a $BUILDLOG
	local msg="Warning, package ${SRCPACKAGE} in ${SUITE} on ${ARCH} is probably already building elsewhere, exiting.\n"
	msg="${msg}Please check $BUILD_URL and https://reproducible.debian.net/$SUITE/$ARCH/${SRCPACKAGE} for a different build.\n"
	case $1 in
		"db")
			msg="${msg}The race condition was caught while marking the build attempt in the database.\n"
			;;
		"init")
			msg="${msg}The race condition was caught while writing the lockfile.\n"
			;;
		"lockfile")
			msg="${msg}The race condition was caught while checking the lockfile for pid correctness.\n"
			;;
	esac
	printf "$msg" | tee -a $BUILDLOG
	printf "$(date -u) - $msg" >> /var/log/jenkins/reproducible-race-conditions.log
	echo "$(date -u) - Terminating this build quickly and nicely..." | tee -a $RBUILDLOG
	if [ $SAVE_ARTIFACTS -eq 1 ] ; then
		SAVE_ARTIFACTS=0
		if [ ! -z "$NOTIFY" ] ; then NOTIFY="failure" ; fi
	fi
	exit 0
}

check_for_race_conditions() {
	if [ $$ -ne $(cat "$LOCKFILE") ] ; then
		BAD_LOCKFILE=true
		handle_race_condition lockfile
	fi
}

save_artifacts() {
		local random=$(head /dev/urandom | tr -cd '[:alnum:]'| head -c5)
		local ARTIFACTS="artifacts/r00t-me/${SRCPACKAGE}_${SUITE}_tmp-${random}"
		local URL="$REPRODUCIBLE_URL/$ARTIFACTS/"
		local HEADER="$BASE/$ARTIFACTS/.HEADER.html"
		mkdir -p $BASE/$ARTIFACTS
		cp -r $TMPDIR/* $BASE/$ARTIFACTS/
		echo | tee -a ${RBUILDLOG}
		local msg="Artifacts from this build are preserved. They will be available for 72h only, so download them now if you want them.\n"
		msg="${msg}WARNING: You shouldn't trust packages you downloaded from this host, they can contain malware or the worst of your fears, packaged nicely in debian format.\n"
		msg="${msg}If you are not afraid facing your fears while helping the world by investigating reproducible build issues, you can download the artifacts from the following location: $URL\n"
		printf "$msg" | tee -a $BUILDLOG
		echo "<p>" > $HEADER
		printf "$msg" | sed 's#$#<br />#g' >> $HEADER
		echo "Package page: <a href=\"$REPRODUCIBLE_URL/${SUITE}/${ARCH}/${SRCPACKAGE}\">$REPRODUCIBLE_URL/${SUITE}/${ARCH}/${SRCPACKAGE}</a><br />" >> $HEADER
		echo "</p>" >> $HEADER
		chmod 644 $HEADER
		echo | tee -a ${RBUILDLOG}
		# irc message
		if [ ! -z "$NOTIFY" ] ; then
			local MESSAGE="Artifacts for ${SRCPACKAGE} (${SUITE}/${ARCH}) published: $URL"
			if [ "$NOTIFY" = "diffoscope" ] ; then
				MESSAGE="$MESSAGE (error when running $DIFFOSCOPE)"
			fi
			irc_message "$MESSAGE"
		fi
}

cleanup_all() {
	if [ $SAVE_ARTIFACTS -eq 1 ] ; then save_artifacts ; fi
	if [ "$NOTIFY" = "failure" ] ; then
		echo "No artifacts were saved for this build." | tee -a ${RBUILDLOG}
		irc_message "Check $REPRODUCIBLE_URL/$SUITE/$ARCH/$SRCPACKAGE and $BUILD_URL to find out why no artifacts were saved (final status $STATUS)"
	elif [ ! -z "$NOTIFY" ] && [ $SAVE_ARTIFACTS -eq 0 ] ; then
		irc_message "$REPRODUCIBLE_URL/$SUITE/$ARCH/$SRCPACKAGE done: $STATUS"
	fi
	gzip -9fvn $RBUILDLOG
	if [ "$MODE" = "legacy" ] || [ "$MODE" = "ng" ] ; then
		# XXX quite ugly: this is just needed to get the correct value of the
		# compressed files in the html. It's cheap and quite safe so, *shrugs*...
		gen_package_html $SRCPACKAGE
		cd
		rm -r $TMPDIR || true
	fi
	if ! $BAD_LOCKFILE ; then rm -f $LOCKFILE ; fi
}

update_db_and_html() {
	# everything passed at this function is saved as a status of this package in the db
	STATUS="$@"
	if [ -z "$VERSION" ] ; then
		VERSION="None"
	fi
	local OLD_STATUS=$(sqlite3 -init $INIT ${PACKAGES_DB} "SELECT status FROM results WHERE package_id='${SRCPKGID}'")
	# notification for changing status
	if [ "${OLD_STATUS}" = "reproducible" ] && [ "$STATUS" != "depwait" ] ; then
		if [ "$STATUS" = "unreproducible" ] || ( [ "$STATUS" = "FTBFS" ] && [ "$SUITE" = "testing" ] ) ; then
			MESSAGE="${REPRODUCIBLE_URL}/${SUITE}/${ARCH}/${SRCPACKAGE} : reproducible ➤ ${STATUS}"
			echo "\n$MESSAGE" | tee -a ${RBUILDLOG}
			irc_message "$MESSAGE"
			# disable ("regular") irc notification unless it's due to diffoscope problems
			if [ ! -z "$NOTIFY" ] && [ "$NOTIFY" != "diffoscope" ] ; then
				NOTIFY=""
			fi
		fi
	fi
	if [ "$OLD_STATUS" != "$STATUS" ] && [ "$NOTIFY_MAINTAINER" -eq 1 ] && \
			[ "$OLD_STATUS" != "depwait" ] && [ "$STATUS" != "depwait" ] && \
			[ "$OLD_STATUS" != "404" ] && [ "$STATUS" != "404" ]; then
		echo "More information on $REPRODUCIBLE_URL/$SUITE/$ARCH/$SRCPACKAGE, feel free to reply to this email to get more help." | \
			mail -s "$SRCPACKAGE changed in $SUITE: $OLD_STATUS -> $STATUS" \
				-a "From: Reproducible builds folks <reproducible-builds@lists.alioth.debian.org>" \
				"$SRCPACKAGE@packages.debian.org"
	fi
	sqlite3 -init $INIT ${PACKAGES_DB} "REPLACE INTO results (package_id, version, status, build_date, build_duration, builder) VALUES ('$SRCPKGID', '$VERSION', '$STATUS', '$DATE', '$DURATION', '$BUILDER')"
	if [ ! -z "$DURATION" ] ; then  # this happens when not 404 and not_for_us
		sqlite3 -init $INIT ${PACKAGES_DB} "INSERT INTO stats_build (name, version, suite, architecture, status, build_date, build_duration, builder) VALUES ('$SRCPACKAGE', '$VERSION', '$SUITE', '$ARCH', '$STATUS', '$DATE', '$DURATION', '$BUILDER')"
	fi
	# unmark build since it's properly finished
	sqlite3 -init $INIT ${PACKAGES_DB} "DELETE FROM schedule WHERE package_id='$SRCPKGID';"
	gen_package_html $SRCPACKAGE
	echo
	echo "Successfully updated the database and updated $REPRODUCIBLE_URL/rb-pkg/${SUITE}/${ARCH}/$SRCPACKAGE.html"
	echo
}

update_rbuildlog() {
	chmod 644 $RBUILDLOG
	mv $RBUILDLOG $BASE/rbuild/${SUITE}/${ARCH}/${SRCPACKAGE}_${EVERSION}.rbuild.log
	RBUILDLOG=$BASE/rbuild/${SUITE}/${ARCH}/${SRCPACKAGE}_${EVERSION}.rbuild.log
}

diff_copy_buildlogs() {
	local DIFF="$BASE/logdiffs/$SUITE/$ARCH/${SRCPACKAGE}_${EVERSION}.diff"
	if [ -f b1/build.log ] ; then
		if [ -f b2/build.log ] ; then
			printf "Diff of the two buildlogs:\n\n--\n" | tee -a $DIFF
			diff -u b1/build.log b2/build.log | tee -a $DIFF
			if [ ${PIPESTATUS[0]} -eq 0 ] ; then
				echo "The two build logs are identical! \o/" | tee -a $DIFF
			fi
			echo -e "\nCompressing the 2nd log..."
			gzip -9vn $DIFF
			gzip -9cvn b2/build.log > $BASE/logs/$SUITE/$ARCH/${SRCPACKAGE}_${EVERSION}.build2.log.gz
			chmod 644 $BASE/logs/$SUITE/$ARCH/${SRCPACKAGE}_${EVERSION}.build2.log.gz
		elif [ $FTBFS -eq 0 ] ; then
			echo "Warning: No second build log, what happened?" | tee -a $RBUILDLOG
		fi
		echo "Compressing the 1st log..."
		gzip -9cvn b1/build.log > $BASE/logs/$SUITE/$ARCH/${SRCPACKAGE}_${EVERSION}.build1.log.gz
		chmod 644 $BASE/logs/$SUITE/$ARCH/${SRCPACKAGE}_${EVERSION}.build1.log.gz
	else
		echo "Error: No first build log, not even looking for the second" | tee -a $RBUILDLOG
	fi
}

handle_404() {
	echo "Warning: Download of ${SRCPACKAGE} sources from ${SUITE} failed." | tee -a ${RBUILDLOG}
	ls -l ${SRCPACKAGE}* | tee -a ${RBUILDLOG}
	echo "Warning: Maybe there was a network problem, or ${SRCPACKAGE} is not a source package in ${SUITE}, or it was removed or renamed. Please investigate." | tee -a ${RBUILDLOG}
	DURATION=''
	EVERSION="None"
	update_rbuildlog
	update_db_and_html "404"
	if [ $SAVE_ARTIFACTS -eq 1 ] ; then SAVE_ARTIFACTS=0 ; fi
	if [ ! -z "$NOTIFY" ] ; then NOTIFY="failure" ; fi
	exit 0 # RBUILDLOG and SAVE_ARTIFACTS and NOTIFY are used in cleanup_all called at exit
}

handle_depwait() {
	echo "Downloading the build dependencies failed" | tee -a "$RBUILDLOG"
	echo "Maybe there was a network problem, or the build dependencies are currently uninstallable; consider filing a bug in the last case." | tee -a "$RBUILDLOG"
	echo "Network problems are automatically rescheduled after some hours." | tee -a "$RBUILDLOG"
	calculate_build_duration
	update_db_and_html "depwait"
	if [ $SAVE_ARTIFACTS -eq 1 ] ; then SAVE_ARTIFACTS=0 ; fi
	if [ -n "$NOTIFY" ] ; then NOTIFY="depwait" ; fi
}

handle_not_for_us() {
	# a list of valid architecture for this package should be passed to this function
	echo "Package ${SRCPACKAGE} (${VERSION}) shall only be build on \"$(echo "$@" | xargs echo )\" and thus was skipped." | tee -a ${RBUILDLOG}
	DURATION=''
	update_rbuildlog
	update_db_and_html "not for us"
	if [ $SAVE_ARTIFACTS -eq 1 ] ; then SAVE_ARTIFACTS=0 ; fi
	if [ ! -z "$NOTIFY" ] ; then NOTIFY="failure" ; fi
	exit 0 # RBUILDLOG and SAVE_ARTIFACTS and NOTIFY are used in cleanup_all called at exit
}

handle_ftbfs() {
	local BUILD
	echo "${SRCPACKAGE} failed to build from source."
	for BUILD in "1" "2"; do
		if zgrep -F "E: pbuilder-satisfydepends failed." "$BASE/logs/$SUITE/$ARCH/${SRCPACKAGE}_${EVERSION}.build${BUILD}.log.gz" ; then
			handle_depwait
			return
		fi
	done
	calculate_build_duration
	update_db_and_html "FTBFS"
	if [ $SAVE_ARTIFACTS -eq 1 ] ; then SAVE_ARTIFACTS=0 ; fi
	if [ ! -z "$NOTIFY" ] ; then NOTIFY="failure" ; fi
}

handle_ftbr() {
	# a ftbr explaination message could be passed
	local FTBRmessage="$@"
	echo | tee -a ${RBUILDLOG}
	echo "$(date -u) - ${SRCPACKAGE} failed to build reproducibly in ${SUITE} on ${ARCH}." | tee -a ${RBUILDLOG}
	cp b1/${BUILDINFO} $BASE/buildinfo/${SUITE}/${ARCH}/ > /dev/null 2>&1 || true  # will fail if there is no .buildinfo
	if [ ! -z "$FTRmessage" ] ; then
		echo "$(date -u) - ${FTBRmessage}." | tee -a ${RBUILDLOG}
	fi
	if [ -f ./${DBDREPORT} ] ; then
		mv ./${DBDREPORT} $BASE/dbd/${SUITE}/${ARCH}/
	else
		echo "$(date -u) - $DIFFOSCOPE produced no output (which is strange)." | tee -a $RBUILDLOG
	fi
	if [ -f ./$DBDTXT ] ; then
		mv ./$DBDTXT $BASE/dbdtxt/$SUITE/$ARCH/
		gzip -9n $BASE/dbdtxt/$SUITE/$ARCH/$DBDTXT
	fi
	calculate_build_duration
	update_db_and_html "unreproducible"
}

handle_reproducible() {
	if [ ! -f ./${DBDREPORT} ] && [ -f b1/${BUILDINFO} ] ; then
		cp b1/${BUILDINFO} $BASE/buildinfo/${SUITE}/${ARCH}/ > /dev/null 2>&1
		figlet ${SRCPACKAGE}
		echo | tee -a ${RBUILDLOG}
		echo "$DIFFOSCOPE found no differences in the changes files, and a .buildinfo file also exists." | tee -a ${RBUILDLOG}
		echo "${SRCPACKAGE} from $SUITE built successfully and reproducibly on ${ARCH}." | tee -a ${RBUILDLOG}
		calculate_build_duration
		update_db_and_html "reproducible"
	elif [ -f ./$DBDREPORT ] ; then
		echo "Debbindiff says the build is reproducible, but there is a diffoscope file. Please investigate" | tee -a $RBUILDLOG
		handle_ftbr
	elif [ ! -f b1/$BUILDINFO ] ; then
		echo "Debbindiff says the build is reproducible, but there is no .buildinfo file. Please investigate" | tee -a $RBUILDLOG
		handle_ftbr
	fi
}

handle_unhandled() {
	MESSAGE="$BUILD_URL met an unhandled $1, please investigate."
	echo "$MESSAGE"
	irc_msg "$MESSAGE"
	if [ -z "$2" ] ; then
		sleep 15m
	else
		sleep $2
	fi
	/srv/jenkins/bin/abort.sh
	exit 0
}

dbd_timeout() {
	local msg="$DIFFOSCOPE was killed after running into timeout after $1"
	if [ ! -s ./${DBDREPORT} ] ; then
		echo "$(date -u) - $DIFFOSCOPE produced no output and was killed after running into timeout after ${1}..." >> ${DBDREPORT}
	else
		msg="$msg, but there is still $REPRODUCIBLE_URL/dbd/$SUITE/$ARCH/$DDBREPORT"
	fi
	SAVE_ARTIFACTS=1
	NOTIFY="diffoscope"
	handle_ftbr "$msg"
}

call_diffoscope_on_changes_files() {
	local TMPLOG=$(mktemp --tmpdir=$TMPDIR)
	echo | tee -a ${RBUILDLOG}
	local TIMEOUT="30m"
	DBDSUITE=$SUITE
	if [ "$SUITE" = "experimental" ] ; then
		# there is no extra diffoscope-schroot for experimental because we specical case ghc enough already ;)
		DBDSUITE="unstable"
	fi
	# TEMP is recognized by python's tempfile module to create temp stuff inside
	local TEMP=$(mktemp --tmpdir=$TMPDIR -d dbd-tmp-XXXXXXX)
	DIFFOSCOPE="$(schroot --directory /tmp -c source:jenkins-reproducible-${DBDSUITE}-diffoscope diffoscope -- --version 2>&1)"
	echo "$(date -u) - $DIFFOSCOPE will be used to compare the two builds:" | tee -a ${RBUILDLOG}
	set +e
	set -x
	( timeout $TIMEOUT schroot \
		--directory $TMPDIR \
		-c source:jenkins-reproducible-${DBDSUITE}-diffoscope \
		-- sh -c "export TMPDIR=$TEMP ; diffoscope \
			--html $TMPDIR/${DBDREPORT} \
			--text $TMPDIR/$DBDTXT \
			$TMPDIR/b1/${SRCPACKAGE}_${EVERSION}_${ARCH}.changes \
			$TMPDIR/b2/${SRCPACKAGE}_${EVERSION}_${ARCH}.changes" \
	2>&1 ) >> $TMPLOG
	RESULT=$?
	if ! "$DEBUG" ; then set +x ; fi
	set -e
	cat $TMPLOG | tee -a $RBUILDLOG  # print dbd output
	rm $TMPLOG
	echo | tee -a ${RBUILDLOG}
	case $RESULT in
		0)
			handle_reproducible
			;;
		1)
			handle_ftbr "$DIFFOSCOPE found issues, please investigate $REPRODUCIBLE_URL/dbd/${SUITE}/${ARCH}/${DBDREPORT}"
			;;
		2)
			SAVE_ARTIFACTS=1
			NOTIFY="diffoscope"
			handle_ftbr "$DIFFOSCOPE had trouble comparing the two builds. Please investigate $REPRODUCIBLE_URL/rbuild/${SUITE}/${ARCH}/${SRCPACKAGE}_${EVERSION}.rbuild.log"
			;;
		124)
			dbd_timeout $TIMEOUT
			;;
		*)
			handle_ftbr "Something weird happened when running $DIFFOSCOPE (which exited with $RESULT) and I don't know how to handle it"
			irc_message "Something weird happened when running $DIFFOSCOPE (which exited with $RESULT) and I don't know how to handle it. Check $BUILDLOG and $REPRODUCIBLE_URL/$SUITE/$ARCH/$SRCPACKAGE and investigate manually"
			;;
	esac
	print_out_duration
}

choose_package () {
	local RESULT=$(sqlite3 -init $INIT ${PACKAGES_DB} "
		SELECT s.suite, s.id, s.name, sch.date_scheduled, sch.save_artifacts, sch.notify, s.notify_maintainer, sch.builder
		FROM schedule AS sch JOIN sources AS s ON sch.package_id=s.id
		WHERE sch.date_build_started = ''
		AND s.architecture='$ARCH'
		ORDER BY date_scheduled LIMIT 1")
	SUITE=$(echo $RESULT|cut -d "|" -f1)
	SRCPKGID=$(echo $RESULT|cut -d "|" -f2)
	SRCPACKAGE=$(echo $RESULT|cut -d "|" -f3)
	# force debug mode for certain packages
	case $SRCPACKAGE in
			ruby-patron|xxxxxxx)
			export DEBUG=true
			set -x
			irc_message "$BUILD_URL/console available to debug $SRCPACKAGE build in $SUITE/$ARCH"
			;;
		*)	;;
	esac
	SCHEDULED_DATE=$(echo $RESULT|cut -d "|" -f4)
	SAVE_ARTIFACTS=$(echo $RESULT|cut -d "|" -f5)
	NOTIFY=$(echo $RESULT|cut -d "|" -f6)
	NOTIFY_MAINTAINER=$(echo $RESULT|cut -d "|" -f7)
	local DEBUG_URL=$(echo $RESULT|cut -d "|" -f8)
	if [ "$DEBUG_URL" = "TBD" ] ; then
		irc_message "The build of $SRCPACKAGE/$SUITE/$ARCH is starting at ${BUILD_URL}consoleFull"
	fi
	if [ -z "$RESULT" ] ; then
		echo "No packages scheduled, sleeping 30m."
		sleep 30m
		exit 0
	fi
}

init_package_build() {
	if [ $SAVE_ARTIFACTS -eq 1 ] ; then
		local ANNOUNCE="Artifacts will be preserved."
	fi
	create_results_dirs
	# used to catch race conditions when the same package is being built by two parallel jobs
	LOCKFILE="/tmp/reproducible-lockfile-${SUITE}-${ARCH}-${SRCPACKAGE}"
	echo "============================================================================="
	echo "Initialising reproducibly build of ${SRCPACKAGE} in ${SUITE} on ${ARCH} on $(hostname -f) now. $ANNOUNCE"
	echo "============================================================================="
	# mark build attempt
	if [ -z "$(sqlite3 -init $INIT ${PACKAGES_DB} "SELECT date_build_started FROM schedule WHERE package_id = '$SRCPKGID'")" ] ; then
		sqlite3 -init $INIT ${PACKAGES_DB} "UPDATE schedule SET date_build_started='$DATE', builder='$BUILDER' WHERE package_id = '$SRCPKGID'"
	else
		BAD_LOCKFILE=true
		handle_race_condition db
	fi
	if [ ! -f "$LOCKFILE" ] ; then
		echo $$ > "$LOCKFILE"
	else
		BAD_LOCKFILE=true
		handle_race_condition init
	fi
	echo "Starting to build ${SRCPACKAGE}/${SUITE}/${ARCH} on $(hostname -f) on $DATE" | tee ${RBUILDLOG}
	echo "The jenkins build log is/was available at ${BUILD_URL}console" | tee -a ${RBUILDLOG}
}

get_source_package() {
	local RESULT
	if [ "$MODE" != "ng" ] ; then
		schroot --directory $TMPDIR -c source:jenkins-reproducible-$SUITE apt-get -- --download-only --only-source source ${SRCPACKAGE} 2>&1 | tee -a ${RBUILDLOG}
		RESULT=$?
	else
		# remote build, no need to download the full source package...
		schroot --directory $TMPDIR -c source:jenkins-reproducible-$SUITE apt-get -- --download-only --only-source --print-uris source ${SRCPACKAGE} | grep \.dsc|cut -d " " -f1|xargs wget || true
		RESULT=$?
	fi
	PARSED_RESULT=$(egrep 'E: Failed to fetch.*(Unable to connect to|Connection failed|Size mismatch|Cannot initiate the connection to|Bad Gateway)' ${RBUILDLOG} || true)
	if [ $RESULT != 0 ] || [ "$(ls ${SRCPACKAGE}_*.dsc 2> /dev/null)" = "" ] || [ ! -z "$PARSED_RESULT" ] ; then
		# sometimes apt-get cannot download a package for whatever reason.
		# if so, wait some time and try again. only if that fails, give up.
		echo "$(date -u ) - download of ${SRCPACKAGE} sources from ${SUITE} failed." | tee -a ${RBUILDLOG}
		ls -l ${SRCPACKAGE}* | tee -a ${RBUILDLOG}
		echo "$(date -u ) - sleeping 5m before re-trying..." | tee -a ${RBUILDLOG}
		sleep 5m
		if [ "$MODE" != "ng" ] ; then
			schroot --directory $TMPDIR -c source:jenkins-reproducible-$SUITE apt-get -- --download-only --only-source source ${SRCPACKAGE} 2>&1 | tee -a ${RBUILDLOG}
			RESULT=$?
		else
			# remote build, no need to download the full source package...
			schroot --directory $TMPDIR -c source:jenkins-reproducible-$SUITE apt-get -- --download-only --only-source --print-uris source ${SRCPACKAGE} | grep \.dsc|cut -d " " -f1|xargs wget || true
			RESULT=$?
		fi
	        PARSED_RESULT=$(egrep 'E: Failed to fetch.*(Unable to connect to|Connection failed|Size mismatch|Cannot initiate the connection to|Bad Gateway)' ${RBUILDLOG} || true)
	fi
	if [ $RESULT != 0 ] || [ "$(ls ${SRCPACKAGE}_*.dsc 2> /dev/null)" = "" ] || [ ! -z "$PARSED_RESULT" ] ; then
		if [ "$MODE" = "legacy" ] || [ "$MODE" = "ng" ] ; then
			handle_404
		else
			exit 404
		fi
	fi
	VERSION="$(grep '^Version: ' ${SRCPACKAGE}_*.dsc| head -1 | egrep -v '(GnuPG v|GnuPG/MacGPG2)' | cut -d ' ' -f2-)"
	EVERSION="$(echo $VERSION | cut -d ':' -f2)"  # EPOCH_FREE_VERSION was too long
	DBDREPORT="${SRCPACKAGE}_${EVERSION}.debbindiff.html"
	DBDTXT="${SRCPACKAGE}_${EVERSION}.debbindiff.txt"
	BUILDINFO="${SRCPACKAGE}_${EVERSION}_${ARCH}.buildinfo"
}

check_suitability() {
	# check whether the package is not for us...
	local SUITABLE=false
	local ARCHITECTURES=$(grep "^Architecture: " ${SRCPACKAGE}_*.dsc| cut -d " " -f2- | sed -s "s# #\n#g" | sort -u)
	for arch in ${ARCHITECTURES} ; do
		if [ "$arch" = "any" ] || [ "$arch" = "$ARCH" ] || [ "$arch" = "linux-any" ] || [ "$arch" = "linux-$ARCH" ] || [ "$arch" = "any-$ARCH" ] || [ "$arch" = "all" ] ; then
			SUITABLE=true
			break
		fi
		# special case arm…
		if [ "$ARCH" = "armhf" ] && [ "$arch" = "any-arm" ] ; then
			SUITABLE=true
			break
		fi

	done
	if ! $SUITABLE ; then handle_not_for_us $ARCHITECTURES ; fi
}

first_build() {
	echo "============================================================================="
	echo "Building ${SRCPACKAGE} in ${SUITE} on ${ARCH} on $(hostname -f) now."
	echo "Date:     $(date)"
	echo "Date UTC: $(date -u)"
	echo "============================================================================="
	set -x
	local TMPCFG=$(mktemp -t pbuilderrc_XXXX --tmpdir=$TMPDIR)
	cat > "$TMPCFG" << EOF
BUILDUSERID=1111
BUILDUSERNAME=pbuilder1
export DEB_BUILD_OPTIONS="parallel=$NUM_CPU"
export TZ="/usr/share/zoneinfo/Etc/GMT+12"
EOF
	# remember to change the sudoers setting if you change the following command
	( sudo timeout -k 12.1h 12h /usr/bin/ionice -c 3 /usr/bin/nice \
	  /usr/sbin/pbuilder --build \
		--configfile $TMPCFG \
		--debbuildopts "-b" \
		--basetgz /var/cache/pbuilder/$SUITE-reproducible-base.tgz \
		--buildresult $TMPDIR/b1 \
		--logfile b1/build.log \
		${SRCPACKAGE}_${EVERSION}.dsc
	) 2>&1 | tee -a $RBUILDLOG
	if ! "$DEBUG" ; then set +x ; fi
	rm $TMPCFG
}

second_build() {
	echo "============================================================================="
	echo "Re-Building ${SRCPACKAGE} in ${SUITE} on ${ARCH} on $(hostname -f) now."
	echo "Date:     $(date)"
	echo "Date UTC: $(date -u)"
	echo "============================================================================="
	set -x
	local TMPCFG=$(mktemp -t pbuilderrc_XXXX --tmpdir=$TMPDIR)
	NEW_NUM_CPU=$(echo $NUM_CPU-1|bc)
	# on armhf we always have different number of cores between 1st+2nd build due to the chosen nodes
	if [ "$ARCH" = "armhf" ] ; then
		NEW_NUM_CPU=$NUM_CPU
	fi
	cat > "$TMPCFG" << EOF
BUILDUSERID=2222
BUILDUSERNAME=pbuilder2
export DEB_BUILD_OPTIONS="parallel=$NUM_CPU"
export TZ="/usr/share/zoneinfo/Etc/GMT-14"
export LANG="fr_CH.UTF-8"
export LC_ALL="fr_CH.UTF-8"
umask 0002
EOF
	# remember to change the sudoers setting if you change the following command
	sudo timeout -k 12.1h 12h /usr/bin/ionice -c 3 /usr/bin/nice \
		/usr/bin/linux64 --uname-2.6 \
		/usr/bin/unshare --uts -- \
		/usr/sbin/pbuilder --build \
			--configfile $TMPCFG \
			--hookdir /etc/pbuilder/rebuild-hooks \
			--debbuildopts "-b" \
			--basetgz /var/cache/pbuilder/$SUITE-reproducible-base.tgz \
			--buildresult $TMPDIR/b2 \
			--logfile b2/build.log \
			${SRCPACKAGE}_${EVERSION}.dsc || true  # exit with 1 when ftbfs
	if ! "$DEBUG" ; then set +x ; fi
	rm $TMPCFG
}

remote_build() {
	local BUILDNR=$1
	local NODE=$2
	local PORT=$3
	set +e
	ssh -p $PORT $NODE /bin/true
	RESULT=$?
	# abort job if host is down
	if [ $RESULT -ne 0 ] then
		echo "$(date -u) - $NODE seems to be down, sleeping 23min before aborting this job."
		sleep 23m
		/srv/jenkins/bin/abort.sh
	fi
	ssh -p $PORT $NODE /srv/jenkins/bin/reproducible_build.sh $BUILDNR ${SRCPACKAGE} ${SUITE} ${TMPDIR}
	RESULT=$?
	# 404-256=148... (ssh 'really' only 'supports' exit codes below 255...)
	if [ $RESULT -eq 148 ] ; then
		handle_404
	elif [ $RESULT -ne 0 ] ; then
		handle_unhandled "exit code from remote build job"
	fi
	rsync -e "ssh -p $PORT" -r $NODE:$TMPDIR/b$BUILDNR $TMPDIR/
	RESULT=$?
	if [ $RESULT -ne 0 ] ; then
		echo "$(date -u ) - rsync from $NODE failed, sleeping 5m before re-trying..." | tee -a ${RBUILDLOG}
		sleep 5m
		rsync -e "ssh -p $PORT" -r $NODE:$TMPDIR/b$BUILDNR $TMPDIR/
		RESULT=$?
		if [ $RESULT -ne 0 ] ; then
			handle_unhandled "error when rsyncing remote build results"
		fi
	fi
	ls -R $TMPDIR
	ssh -p $PORT $NODE "rm -r $TMPDIR"
	set -e
	if [ $BUILDNR -eq 1 ] ; then
		cat $TMPDIR/b1/build.log >> ${RBUILDLOG}
	fi
}

check_buildinfo() {
	local TMPFILE1=$(mktemp --tmpdir=$TMPDIR)
	local TMPFILE2=$(mktemp --tmpdir=$TMPDIR)
	grep-dctrl -s Build-Environment -n ${SRCPACKAGE} ./b1/$BUILDINFO > $TMPFILE1
	grep-dctrl -s Build-Environment -n ${SRCPACKAGE} ./b2/$BUILDINFO > $TMPFILE2
	set +e
	diff $TMPFILE1 $TMPFILE2
	RESULT=$?
	set -e
	if [ $RESULT -eq 1 ] ; then
		printf "$(date -u) - $BUILDINFO in ${SUITE} on ${ARCH} varies, probably due to mirror update. Doing the first build again, please check ${BUILD_URL}console for now..." >> /var/log/jenkins/reproducible-hit-mirror-update.log
		echo
		echo "============================================================================="
		echo "$(date -u) - The build environment varies according to the two .buildinfo files, probably due to mirror update. Doing the first build again."
		echo "============================================================================="
		echo
		if [ "$MODE" = "legacy" ] ; then
			first_build
		else
			remote_build 1 $NODE1 $PORT1
		fi
		grep-dctrl -s Build-Environment -n ${SRCPACKAGE} ./b1/$BUILDINFO > $TMPFILE1
		set +e
		diff $TMPFILE1 $TMPFILE2
		RESULT=$?
		set -e
		if [ $RESULT -eq 1 ] ; then
			irc_message "$REPRODUCIBLE_URL/$SUITE/$ARCH/$SRCPACKAGE had different packages installed in the 1st+2nd build, and then also in the 2nd+3rd builds. Please investigate, this should not happen."
		fi
	fi
	rm $TMPFILE1 $TMPFILE2
}

build_rebuild() {
	FTBFS=1
	mkdir b1 b2
	if [ "$MODE" = "legacy" ] ; then
		first_build
	else
		remote_build 1 $NODE1 $PORT1
	fi
	if [ ! -f b1/${SRCPACKAGE}_${EVERSION}_${ARCH}.changes ] && [ -f b1/${SRCPACKAGE}_*_${ARCH}.changes ] ; then
			echo "Version mismatch between main node (${SRCPACKAGE}_${EVERSION}_${ARCH}.dsc expected) and first build node ($(ls b1/*dsc)) for $SUITE/$ARCH, aborting. Please upgrade the schroots..." | tee -a ${RBUILDLOG}
			# reschedule the package for later and quit the build without saving anything
			sqlite3 -init $INIT ${PACKAGES_DB} "UPDATE schedule SET date_build_started='', builder='', date_scheduled='$(date -u +'%Y-%m-%d %H:%M')' WHERE package_id='$SRCPKGID'"
			NOTIFY=""
			exit 0
	elif [ -f b1/${SRCPACKAGE}_${EVERSION}_${ARCH}.changes ] ; then
		# the first build did not FTBFS, try rebuild it.
		check_for_race_conditions
		if [ "$MODE" = "legacy" ] ; then
			second_build
		else
			remote_build 2 $NODE2 $PORT2
		fi
		if [ -f b2/${SRCPACKAGE}_${EVERSION}_${ARCH}.changes ] ; then
			# both builds were fine, i.e., they did not FTBFS.
			FTBFS=0
			cat b1/${SRCPACKAGE}_${EVERSION}_${ARCH}.changes | tee -a ${RBUILDLOG}
		else
			echo "The second build failed, even though the first build was successful." | tee -a ${RBUILDLOG}
		fi
	fi
}

#
# below is what controls the world
#

TMPDIR=$(mktemp --tmpdir=/srv/reproducible-results -d)  # where everything actually happens
trap cleanup_all INT TERM EXIT
cd $TMPDIR

DATE=$(date -u +'%Y-%m-%d %H:%M')
START=$(date +'%s')
RBUILDLOG=$(mktemp --tmpdir=$TMPDIR)
BAD_LOCKFILE=false
BUILDER="${JOB_NAME#reproducible_builder_}/${BUILD_ID}"
ARCH="$(dpkg --print-architecture)"

#
# determine mode
#
if [ "$1" = "" ] ; then
	MODE="legacy"
elif [ "$1" = "1" ] || [ "$1" = "2" ] ; then
	MODE="$1"
	SRCPACKAGE="$2"
	SUITE="$3"
	SAVE_ARTIFACTS="0"
	TMPDIR="$4"
	[ -d $TMPDIR ] || mkdir -p $TMPDIR
	cd $TMPDIR
	# used to catch race conditions when the same package is being built by two parallel jobs
	LOCKFILE="/tmp/reproducible-lockfile-${SUITE}-${ARCH}-${SRCPACKAGE}"
	get_source_package
	mkdir b$MODE
	if [ "$MODE" = "1" ] ; then
		first_build
	else
		second_build
	fi
	echo "$(date -u) - build #$MODE for $SRCPACKAGE/$SUITE/$ARCH on $HOSTNAME done"
	exit 0
elif [ "$2" != "" ] ; then
	MODE="ng"
	NODE1="$(echo $1 | cut -d ':' -f1).debian.net"
	NODE2="$(echo $2 | cut -d ':' -f1).debian.net"
	PORT1="$(echo $1 | cut -d ':' -f2)"
	PORT2="$(echo $2 | cut -d ':' -f2)"
	# if no port is given, assume 22
	if [ "$NODE1" = "${PORT1}.debian.net" ] ; then PORT1=22 ; fi
	if [ "$NODE2" = "${PORT2}.debian.net" ] ; then PORT2=22 ; fi
	# overwrite ARCH for remote builds
	for i in $ARCHS ; do
		# try to match ARCH in nodenames
		if [[ "$NODE1" =~ .*-$i.* ]] ; then
			ARCH=$i
		fi
	done
	if [ -z "$ARCH" ] ; then
		echo "Error: could not detect architecture, exiting."
		exit 1
	fi
fi

#
# main - for both legacy and ng-mode
#
delay_start
choose_package  # defines SUITE, PKGID, SRCPACKAGE, SCHEDULED_DATE, SAVE_ARTIFACTS, NOTIFY
init_package_build
get_source_package

cat ${SRCPACKAGE}_${EVERSION}.dsc | tee -a ${RBUILDLOG}

check_for_race_conditions
check_suitability
check_for_race_conditions
build_rebuild  # defines FTBFS redefines RBUILDLOG
if [ $FTBFS -eq 0 ] ; then
	check_buildinfo
fi
cleanup_pkg_files
diff_copy_buildlogs
update_rbuildlog
if [ $FTBFS -eq 1 ] ; then
	handle_ftbfs
elif [ $FTBFS -eq 0 ] ; then
	call_diffoscope_on_changes_files  # defines DIFFOSCOPE, update_db_and_html defines STATUS
fi

check_for_race_conditions
cd ..
cleanup_all
trap - INT TERM EXIT