summaryrefslogtreecommitdiffstats
path: root/bin/test_torbrowser-launcher.sh
blob: 5c716c41a80b6c0ac5d2855b41e053e90a6494dd (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
#!/bin/bash

# Copyright 2015-2016 Holger Levsen <holger@layer-acht.org>
# released under the GPLv=2

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

set -e

# dependencies used in the schroot are described in job-cfg/torbrowser-launcher.yaml, see how schroot-create.sh is called there.
# additionally this script needs the following packages: xvfb, xvkbd, ffmpeg, gocr, imagemagick

cleanup_all() {
	set +e
	# kill xvfb and ffmpeg
	kill $XPID $FFMPEGPID 2>/dev/null|| true
	# preserve screenshots and video
	cd $TMPDIR
	[ ! -f $VIDEO ] || mv $VIDEO $RESULTS/
	cd $WORKSPACE
	[ ! -f screenshot.png ] || rm screenshot.png
	[ ! -f screenshot-thumb.png ] || rm screenshot-thumb.png
	[ ! -f screenshot_from_git.png ] || mv screenshot_from_git.png screenshot.png
	# shutdown and end session if it still exists
	STATUS=$(schroot -l --all-sessions | grep $SESSION || true)
	if [ -n "$STATUS" ] ; then
		echo "$(date -u ) - stopping dbus service."
		schroot --run-session -c $SESSION --directory /tmp -u root -- service dbus stop || true
		sleep 1
		schroot --end-session -c $SESSION || true
		echo "$(date -u ) - schroot session $SESSION end."
	fi
	# delete main work dir
	cd
	rm $TMPDIR $TBL_LOGFILE -rf
	# end
	echo "$(date -u) - $TMPDIR deleted. Cleanup done."
	# $1 is empty when called via trap
	if [ "$1" = "quiet" ] ; then
		echo "$(date -u) - everything ran nicely, congrats."
	fi
}

cleanup_duplicate_screenshots() {
	cd $RESULTS
	echo "$(date -u) - removing duplicate and similar screenshots."
	# loop backwards through the screenshots and remove similar ones
	# this results in keeping the interesting ones :)
	MAXDIFF=2500 # pixels
	for i in $(ls -r1 *.png | xargs echo) ; do
		for j in $(ls -r1 *.png | xargs echo) ; do
			if [ "$j" = "$i" ] ; then
				break
			elif [ ! -f $j ] || [ ! -f $i ] ; then
				break
			fi
			# here we check the difference in pixels between the two images
			PIXELS=$(compare -metric AE $i $j /dev/null 2>&1 || true)
			# if it's an integer…
			if [[ "$PIXELS" =~ ^[0-9]+$ ]] && [ $PIXELS -le $MAXDIFF ] ; then
				echo "$(date -u ) - removing $j, $PIXELS pixels difference."
				rm $j
			fi
		done
	done
	cp $(ls -r1 *.png | head -1) final_state.png
	convert final_state.png -adaptive-resize 128x96 final_state-thumb.png
}

update_screenshot() {
	TIMESTAMP=$(date +%Y%m%d%H%M%S)
	# probably there is something more lightweight to grab a screenshot from xvfb…
	ffmpeg -y -f x11grab -s $SIZE -i :$SCREEN.0 -frames 1 screenshot.png > /dev/null 2>&1
	convert screenshot.png -adaptive-resize 128x96 screenshot-thumb.png
	# for later publishing
	cp screenshot.png $RESULTS/screenshot_$TIMESTAMP.png
	# for the live screenshot plugin
	mv screenshot.png screenshot-thumb.png $WORKSPACE/
	echo "screenshot_$TIMESTAMP.png taken."
}

begin_session() {
	# create schroot session
	schroot --begin-session --session-name=$SESSION -c jenkins-torbrowser-launcher-$SUITE
	echo "Starting schroot session, schroot --run-session -c $SESSION -- now availble."
	schroot --run-session -c $SESSION --directory /tmp -u root -- mkdir $HOME
	schroot --run-session -c $SESSION --directory /tmp -u root -- chown jenkins:jenkins $HOME
}

end_session() {
	# destroy schroot session
	schroot --end-session -c $SESSION
	echo "$(date -u ) - schroot session $SESSION end."
	sleep 1
}

upgrade_to_newer_packaged_version_in() {
	local SUITE=$1
	echo
	echo "$(date -u ) - upgrading to torbrowser-launcher from $SUITE."
	echo "deb $MIRROR $SUITE main contrib" | schroot --run-session -c $SESSION --directory /tmp -u root -- tee -a /etc/apt/sources.list
	schroot --run-session -c $SESSION --directory /tmp -u root -- apt-get update
	schroot --run-session -c $SESSION --directory /tmp -u root -- apt-get -y install -t $SUITE torbrowser-launcher
	echo "$(date -u ) - upgraded to torbrowser-launcher from $SUITE."
}

upgrade_to_package_build_from_git() {
	echo
	local BRANCH=$1
	# GIT_URL is set by jenkins
	echo "$(date -u ) - building Debian package based on branch $BRANCH from $GIT_URL."
	# build package
	if [ "$BRANCH" = "debian/jessie" ] || [ "$BRANCH" = "debian/jessie-proposed" ] ; then
		local UPSTREAM_TREE=v0.1.9
	elif [ "$BRANCH" = "upstream-master-plus-debian-packaging" ] ; then
		local UPSTREAM_TREE=origin/master
	else
		local UPSTREAM_TREE=origin/master
	fi
	# configure lintian to be pedantic
	echo "pedantic = yes" | schroot --run-session -c $SESSION --directory $TMPDIR -u root -- tee -a /etc/lintianrc
	# build the package
	schroot --run-session -c $SESSION --directory $TMPDIR/git -- gbp buildpackage --git-ignore-branch --git-upstream-tree=$UPSTREAM_TREE -uc -us
	local DEB=$(cd $TMPDIR ; ls torbrowser-launcher_*deb)
	local CHANGES=$(cd $TMPDIR ; ls torbrowser-launcher_*changes)
	# install it
	echo "$(date -u ) - $DEB will be installed."
	schroot --run-session -c $SESSION --directory $TMPDIR -u root -- dpkg -i $DEB
	# cleanup
	rm $TMPDIR/git -r
	cat $TMPDIR/$CHANGES
	schroot --run-session -c $SESSION --directory $TMPDIR -- dcmd rm -v $CHANGES || true
	echo "$(date -u ) - $DEB installed."
}

announce_failure_and_exit() {
	echo "$1"
	echo "'$1'" | xargs schroot --run-session -c $SESSION --preserve-environment -- notify-send -u critical
	update_screenshot
	cleanup_duplicate_screenshots
	exit 1
}

announce_problem_and_abort_silently() {
	echo "$1"
	echo "'$1'" | xargs schroot --run-session -c $SESSION --preserve-environment -- notify-send -u critical
	update_screenshot
	cleanup_duplicate_screenshots
	cleanup_all
	exec /srv/jenkins/bin/abort.sh
	exit 0
}

prepare_other_packages() {
	# once #805173 is fixed in all tested suites, ca-certificates doesn't have to be installed here anymore
	if [ "$SUITE" = "wheezy" ] || [ "$SUITE" = "jessie" ] ; then
		schroot --run-session -c $SESSION --directory $TMPDIR -u root -- apt-get install -y ca-certificates
	fi
	# tor is only a recommends and we don't install recommends by default…
	if $VIA_TOR ; then
		echo "$(date -u ) - installing tor as this test will download torbrowser via the system tor service."
		schroot --run-session -c $SESSION --directory $TMPDIR -u root -- apt-get install -y tor
	fi
}

prepare_lauchner_settings() {
	if $BROKEN_SETTINGS ; then
		echo "$(date -u ) - providing broken settings for torbrowser-launcher to test if it can deal with it."
		SETTINGS=$(mktemp -t tbl-tests-XXXXXXXX)
		cat >$SETTINGS <<-__END__
(dp0
S'accept_links'
p1
I00
sS'modem_sound'
p2
I00
sS'latest_version'
p3
S'5.5a4-hardened'
p4
sS'installed_version'
p5
S'5.0.4'
p6
sS'check_for_updates'
p7
I00
sS'mirror'
p8
S'https://dist.torproject.org/'
p9
sS'tbl_version'
p10
S'0.1.9-1'
p11
sS'update_over_tor'
p12
I01
sS'last_update_check_timestamp'
p13
I1449534041
__END__
		echo -n "s." >> $SETTINGS
		schroot --run-session -c $SESSION --preserve-environment -- mkdir -p $HOME/.config/torbrowser
		cat $SETTINGS | schroot --run-session -c $SESSION --preserve-environment -- tee $HOME/.config/torbrowser/settings
		rm $SETTINGS >/dev/null
	else
		echo "$(date -u ) - not providing any settings for torbrowser-launcher."
	fi
}

download_and_launch() {
	echo
	echo "$(date -u) - Test download_and_launch begins."
	schroot --run-session -c $SESSION --directory /tmp -- dpkg -l torbrowser-launcher || true
	echo "$(date -u ) - starting dbus service."
	# yes, torbrowser needs dbus
	schroot --run-session -c $SESSION --directory /tmp -u root -- service dbus start
	sleep 5
	echo "$(date -u) - starting Xvfb on :$SCREEN.0 now."
	# start X on virtual framebuffer device
	Xvfb -ac -br -screen 0 ${SIZE}x24 :$SCREEN &
	XPID=$!
	sleep 3
	# configure environment
	export DISPLAY=":$SCREEN.0"
	echo export DISPLAY=":$SCREEN.0"
	unset http_proxy
	unset https_proxy
	#export LANGUAGE="de"
	#export LANG="de_DE.UTF-8"
	#export LC_ALL="de_DE.UTF-8"
	echo "$(date -u) - starting awesome."
	timeout -k 30m 29m schroot --run-session -c $SESSION --preserve-environment -- awesome &
	sleep 5
	# configure dbus session for this user's session
	DBUS_SESSION_FILE=$(mktemp -t torbrowser-launcher-XXXXXX)
	DBUS_SESSION_POINTER=$(schroot --run-session -c $SESSION --preserve-environment -- ls $HOME/.dbus/session-bus/ -t1 | head -1)
	schroot --run-session -c $SESSION --preserve-environment -- cat $HOME/.dbus/session-bus/$DBUS_SESSION_POINTER > $DBUS_SESSION_FILE
	. $DBUS_SESSION_FILE && export DBUS_SESSION_BUS_ADDRESS
	echo export DBUS_SESSION_BUS_ADDRESS=$DBUS_SESSION_BUS_ADDRESS
	rm $DBUS_SESSION_FILE
	# start ffmpeg to capture a video of the interesting bits of the test
	ffmpeg -f x11grab -s $SIZE -i :$SCREEN.0 $VIDEO > /dev/null 2>&1 &
	FFMPEGPID=$!
	sleep 2
	echo "'$(date -u) - starting torbrowser tests'" | tee | xargs schroot --run-session -c $SESSION --preserve-environment -- notify-send
	update_screenshot
	echo "$(date -u) - starting torbrowser-launcher, opening settings dialog."
	# set PYTHONUNBUFFERED to get unbuffered output from python, so we can grep in it in real time
	export PYTHONUNBUFFERED=true
	prepare_lauchner_settings
	( timeout -k 30m 29m schroot --run-session -c $SESSION --preserve-environment -- /usr/bin/torbrowser-launcher --settings 2>&1 |& tee $TBL_LOGFILE || true ) &
	sleep 23
	update_screenshot
	if $VIA_TOR ; then
		# download via system tor
		echo "$(date -u) - pressing <return> to select download via tor"
		xvkbd -text "\r" > /dev/null 2>&1
		sleep 1
		update_screenshot
	fi
	# else the default will be used, which is download via https…
	echo "$(date -u) - pressing <tab>"
	xvkbd -text "\t" > /dev/null 2>&1
	sleep 1
	TBL_VERSION=$(schroot --run-session -c $SESSION -- dpkg --status torbrowser-launcher |grep ^Version|cut -d " " -f2)
	if dpkg --compare-versions $TBL_VERSION lt 0.2.0-1~ && ! dpkg --compare-versions $TBL_VERSION gt 0.1.9-1+deb8u2~ ; then
		echo "$(date -u) - torbrowser-launcher version <0.2.0-1~ detected ($TBL_VERSION), pressing <tab> three times more."
		xvkbd -text "\t\t\t" > /dev/null 2>&1
		sleep 1
	elif dpkg --compare-versions $TBL_VERSION lt 0.2.2-1~ ; then
		echo "$(date -u) - torbrowser-launcher version <0.2.2-1~ detected ($TBL_VERSION), pressing <tab> twice more."
		xvkbd -text "\t\t" > /dev/null 2>&1
		sleep 1
	elif dpkg --compare-versions $TBL_VERSION gt 0.2.3-1~ ; then
		echo "$(date -u) - torbrowser-launcher version >0.2.3-1~ detected ($TBL_VERSION), pressing <tab> once more."
		xvkbd -text "\t" > /dev/null 2>&1
		sleep 1
	fi
	update_screenshot
	echo "$(date -u) - pressing <return>"
	xvkbd -text "\r" > /dev/null 2>&1
	sleep 5
	update_screenshot
	SETTINGS_DONE=$(pgrep -f "$SESSION --preserve-environment -- torbrowser-launcher --settings" || true)
	if [ -n "$SETTINGS_DONE" ] ; then
		announce_failure_and_exit "$(date -u) - settings dialog still there, please investigate."
	fi
	if $VIA_TOR ; then
		MAX_LOOP=52	# allow the download to take up to ~31 minutes (1898 seconds) via tor
	else
		MAX_LOOP=42	# allow the download to take up to ~22 minutes (1323 seconds) via https
	fi
	# ( echo -n "0" ; for i in $(seq 1 42) ; do echo -n "+$i+10" ; done ; echo ) | bc
	# we watch the download directory and parse torbrowser-launchers stdout, so usually this loop won't run this long
	for i in $(seq 1 $MAX_LOOP) ; do
		sleep 10 ; sleep $i
		STATUS="$(grep '^Download error:' $TBL_LOGFILE || true)"
		if [ -n "$STATUS" ] ; then
			announce_failure_and_exit "$(date -u) - $STATUS"
		fi
		# download is finished once BROWSER_DIR_EN or BROWSER_DIR_DE exist
		# as these directories only exist once torbrower has been successfully installed
		# (and pattern matching doesnt work because of schroot…)
		local BROWSER_DIR_EN=$HOME/.local/share/torbrowser/tbb/x86_64/tor-browser_en-US/Browser
		local BROWSER_DIR_DE=$HOME/.local/share/torbrowser/tbb/x86_64/tor-browser_de/Browser
		STATUS="$(schroot --run-session -c $SESSION -- test ! -d $BROWSER_DIR_EN -a ! -d $BROWSER_DIR_DE || echo $(date -u ) - torbrowser downloaded and installed, configuring tor now. )"
		if [ -n "$STATUS" ] ; then
			update_screenshot
			break
		fi
		update_screenshot
	done
	if [ ! -n "$STATUS" ] ; then
		announce_failure_and_exit "$(date -u) - could not download torbrowser, please investigate."
	fi
	echo "$(date -u) - waiting for torbrowser to start the tor network settings dialogue."
	# allow up to 90 seconds for torbrowser to start the tor network settings dialogue
	for i in $(seq 1 9) ; do
		sleep 5 ; sleep $i
		# this directory only exists once torbrower has successfully started
		# (and pattern matching doesnt work because of schroot…)
		local BROWSER_PROFILE=TorBrowser/Data/Browser/profile.default
		STATUS="$(schroot --run-session -c $SESSION -- test ! -d $BROWSER_DIR_EN/$BROWSER_PROFILE -a ! -d $BROWSER_DIR_DE/$BROWSER_PROFILE || echo $(date -u ) - torbrowser running. )"
		if [ -n "$STATUS" ] ; then
			sleep 15
			break
		fi
	done
	if [ ! -n "$STATUS" ] ; then
		announce_failure_and_exit "$(date -u) - could not start torbrowser, please investigate."
	fi
	echo "$(date -u) - pressing <return>, to connect directly via tor."
	xvkbd -text "\r" > /dev/null 2>&1
	sleep 3
	update_screenshot
	# allow up to 165 seconds for torbrowser to start and to make the first connection through tor
	for i in $(seq 1 14) ; do
		sleep 5 ; sleep $i
		update_screenshot
		TOR_RUNNING=$(gocr $WORKSPACE/screenshot.png 2>/dev/null | egrep "(Search securely|Tor Is NOT all you need to browse|There are many ways you can help)" || true)
		if [ -n "$TOR_RUNNING" ] ; then
			echo "$(date -u) - torbrowser is working as it should, good."
			break
		fi
	done
	if [ -z "$TOR_RUNNING" ] ; then
		announce_problem_and_abort_silently "$(date -u) - could not connect via tor or could not run torbrowser at all. Aborting."
	fi
	BONUS_LEVEL_1=""
	URL="http://vwakviie2ienjx6t.onion/debian/" 	# see http://richardhartmann.de/blog/posts/2015/08/24-Tor-enabled_Debian_mirror/
	echo "$(date -u) - pressing <ctrl>-l - about to enter $URL as URL."
	xvkbd -text "\Cl" > /dev/null 2>&1
	sleep 3
	xvkbd -text "$URL" > /dev/null 2>&1
	sleep 1
	xvkbd -text "\r" > /dev/null 2>&1
	sleep 2
	# allow up up to 76 seconds to load the url
	for i in $(seq 1 8) ; do
		sleep 5 ; sleep $i
		# ocr'ing README only sometimes works well and not so much with the new rendering
		URL_LOADED=$(gocr $WORKSPACE/screenshot.png 2>/dev/null | egrep -c '(README|RE_ADh1E|REnDmE)' || true)
		update_screenshot
		if [ $URL_LOADED -ge 4 ] ; then
			echo "$(date -u) - $URL loaded fine, very much an archive in there, great."
			BONUS_LEVEL_1="yes"
			break
		fi
	done
	# for debugging
	if [ $URL_LOADED -lt 4 ] ; then
		echo "$(date -u) - URL_LOADED = '$URL_LOADED' so probably that page didnt load properly."
		# extra debug, as rendering in sid has changed and thus gocr behaves differently…
		gocr $WORKSPACE/screenshot.png 2>/dev/null
	fi
	BONUS_LEVEL_2=""
	URL="https://www.debian.org"
	echo "$(date -u) - pressing <ctrl>-l - about to enter $URL as URL."
	xvkbd -text "\Cl" > /dev/null 2>&1
	sleep 3
	xvkbd -text "$URL" > /dev/null 2>&1
	sleep 1
	xvkbd -text "\r" > /dev/null 2>&1
	sleep 2
	# allow up up to 51 seconds to load the url
	for i in $(seq 1 6) ; do
		sleep 5 ; sleep $i
		URL_LOADED=$(gocr $WORKSPACE/screenshot.png 2>/dev/null | grep -c "Debian" || true)
		update_screenshot
		if [ $URL_LOADED -ge 6 ] ; then
			echo "$(date -u) - $URL loaded fine, very much Debian in there, great."
			BONUS_LEVEL_2="yes"
			break
		fi
	done
	# for debugging
	if [ $URL_LOADED -lt 6 ] ; then
		echo "$(date -u) - URL_LOADED = '$URL_LOADED'"
	fi
	if [ -n "$BONUS_LEVEL_1" ] && [ -n "$BONUS_LEVEL_2" ] ; then
		STATUS_MSG="Very well done."
		STATUS_COLORS="-bg green -fg black"
	elif [ -n "$BONUS_LEVEL_1" ] || [ -n "$BONUS_LEVEL_2" ] ; then
		STATUS_MSG="Well done."
		STATUS_COLORS="-bg lightgreen -fg black"
	else
		STATUS_MSG=""
		STATUS_COLORS=""
	fi
	# sleep is added here, so xterm + notification come up nicely
	schroot --run-session -c $SESSION --preserve-environment -- xterm -geometry 1024x230+0+520 $STATUS_COLORS -fa 'DejaVuSansMono' -fs 18 -hold -T '$(date +'%a %d %b')' -e "echo ; figlet -c -f banner -w 68 '$(date +'%a %d %b')'" 2>/dev/null || true &
	sleep 4
	echo "'$(date -u) - torbrowser tests end. $STATUS_MSG'" | tee | xargs schroot --run-session -c $SESSION --preserve-environment -- notify-send
	sleep 0.5
	update_screenshot
	echo "$(date -u) - telling awesome to quit."
	echo 'awesome.quit()' | schroot --run-session -c $SESSION --preserve-environment -- awesome-client
	sleep 0.5
	schroot --run-session -c $SESSION --directory /tmp -u root -- service dbus stop
	sleep 1
	echo "$(date -u ) - killing Xvfb and ffmpeg."
	kill $XPID $FFMPEGPID || true
	sleep 1
	echo "$(date -u ) - Test ends."
	echo
}

merge_debian_branch() {
	local DEBIAN_GIT_URL="git://git.debian.org/pkg-privacy/packages/torbrowser-launcher.git"
	local DEBIAN_BRANCH="debian/$1"
	echo "$(date -u) - Merging branch $DEBIAN_BRANCH into $COMMIT_HASH now."
	echo
	git log -1
	git checkout -b $BRANCH
	git remote add debian $DEBIAN_GIT_URL
	git fetch --no-tags debian
	git merge --no-stat --no-edit $DEBIAN_BRANCH
	local BUILD_VERSION="$(dpkg-parsechangelog |grep ^Version:|cut -d " " -f2).0~jenkins-test-$COMMIT_HASH"
	local COMMIT_MSG1="Automatically build by jenkins using the branch $DEBIAN_BRANCH (from $DEBIAN_GIT_URL) merged into $COMMIT_HASH."
	# GIT_URL AND GIT_BRANCH are set by jenkins
	local COMMIT_MSG2="$COMMIT_HASH is from branch $(echo $GIT_BRANCH|cut -d '/' -f2) from $GIT_URL."
	dch -R $COMMIT_MSG1
	dch -v $BUILD_VERSION $COMMIT_MSG2
	git commit -a -m "Automatically merged by jenkins."
}

prepare_git_workspace_copy() {
	echo "$(date -u) - preparing git workspace copy in $TMPDIR/git"
	git branch -av
	mkdir $TMPDIR/git
	cp -r .git* * $TMPDIR/git
	echo
}

revert_git_changes() {
	git reset --hard
	git checkout -f -q $COMMIT_HASH
	git branch -D $BRANCH
}

#
# prepare
#
if [ -z "$1" ] ; then
	echo "call $0 with a suite as param."
	exit 1
elif [ "$1" = "broken_settings" ] ; then
	BROKEN_SETTINGS=true
	shift
else
	BROKEN_SETTINGS=false
fi
if [ "$1" = "via_tor" ] ; then
	VIA_TOR=true
	shift
else
	VIA_TOR=false
fi
SUITE=$1
UPGRADE_SUITE=""
TMPDIR=$(mktemp -d -t torbrowser-launcher-XXXXXX)
TBL_LOGFILE=$(mktemp -t torbrowser-launcher-XXXXXX)
SESSION="tbb-launcher-$SUITE-$(basename $TMPDIR)"
STARTTIME=$(date +%Y%m%d%H%M)
VIDEO=test-torbrowser-${SUITE}_$STARTTIME.mpg
SIZE=1024x768
SCREEN=$EXECUTOR_NUMBER
if [ "$2" = "git" ] ; then
	if [ "$3" = "merge"  ] ; then
		# merge debian branch into upstream master branch
		BRANCH=upstream-master-plus-debian-packaging
		COMMIT_HASH=$(git log -1 --oneline|cut -d " " -f1)
		merge_debian_branch $4
		prepare_git_workspace_copy
		revert_git_changes
	else
		# just use this branch
		BRANCH=$3
		prepare_git_workspace_copy
	fi
elif [ "$SUITE" = "experimental" ] || [ "$2" = "experimental" ] ; then
	SUITE=unstable
	UPGRADE_SUITE=experimental
elif [ "$2" = "unstable" ] ; then
	UPGRADE_SUITE=unstable
elif [ "$2" = "stretch" ] ; then
	UPGRADE_SUITE=stretch
elif [ "$2" = "backports" ] ; then
	UPGRADE_SUITE=$SUITE-backports
fi
WORKSPACE=$(pwd)
RESULTS=$WORKSPACE/results
rm -f $RESULTS/*.png $RESULTS/*.mpg
[ ! -f screenshot.png ] || mv screenshot.png screenshot_from_git.png
mkdir -p $RESULTS
cd $TMPDIR
# use trap to always clean up
trap cleanup_all INT TERM EXIT

#
# main
#
echo "$(date -u) - testing torbrowser-launcher on $SUITE now."
begin_session
prepare_other_packages
# the default is to test the packaged version from $SUITE
# and there are two variations:
if [ "$2" = "git" ] ; then
	upgrade_to_package_build_from_git $BRANCH
elif [ -n "$UPGRADE_SUITE" ] ; then
	upgrade_to_newer_packaged_version_in $UPGRADE_SUITE
fi
download_and_launch
end_session
cleanup_duplicate_screenshots

# the very end
trap - INT TERM EXIT
cleanup_all quiet
echo "$(date -u) - the very end."