summaryrefslogtreecommitdiff
path: root/t/t1450-fsck.sh
blob: cfb32b62420dc162e79aaea29a36f7d78f3353f5 (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
#!/bin/sh

test_description='git fsck random collection of tests

* (HEAD) B
* (master) A
'

. ./test-lib.sh

test_expect_success setup '
	git config gc.auto 0 &&
	git config i18n.commitencoding ISO-8859-1 &&
	test_commit A fileA one &&
	git config --unset i18n.commitencoding &&
	git checkout HEAD^0 &&
	test_commit B fileB two &&
	git tag -d A B &&
	git reflog expire --expire=now --all &&
	>empty
'

test_expect_success 'loose objects borrowed from alternate are not missing' '
	mkdir another &&
	(
		cd another &&
		git init &&
		echo ../../../.git/objects >.git/objects/info/alternates &&
		test_commit C fileC one &&
		git fsck --no-dangling >../actual 2>&1
	) &&
	test_cmp empty actual
'

test_expect_success 'HEAD is part of refs, valid objects appear valid' '
	git fsck >actual 2>&1 &&
	test_cmp empty actual
'

# Corruption tests follow.  Make sure to remove all traces of the
# specific corruption you test afterwards, lest a later test trip over
# it.

test_expect_success 'setup: helpers for corruption tests' '
	sha1_file() {
		echo "$*" | sed "s#..#.git/objects/&/#"
	} &&

	remove_object() {
		file=$(sha1_file "$*") &&
		test -e "$file" &&
		rm -f "$file"
	}
'

test_expect_success 'object with bad sha1' '
	sha=$(echo blob | git hash-object -w --stdin) &&
	old=$(echo $sha | sed "s+^..+&/+") &&
	new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
	sha="$(dirname $new)$(basename $new)" &&
	mv .git/objects/$old .git/objects/$new &&
	test_when_finished "remove_object $sha" &&
	git update-index --add --cacheinfo 100644 $sha foo &&
	test_when_finished "git read-tree -u --reset HEAD" &&
	tree=$(git write-tree) &&
	test_when_finished "remove_object $tree" &&
	cmt=$(echo bogus | git commit-tree $tree) &&
	test_when_finished "remove_object $cmt" &&
	git update-ref refs/heads/bogus $cmt &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&

	test_must_fail git fsck 2>out &&
	cat out &&
	grep "$sha.*corrupt" out
'

test_expect_success 'branch pointing to non-commit' '
	git rev-parse HEAD^{tree} >.git/refs/heads/invalid &&
	test_when_finished "git update-ref -d refs/heads/invalid" &&
	git fsck 2>out &&
	cat out &&
	grep "not a commit" out
'

test_expect_success 'email without @ is okay' '
	git cat-file commit HEAD >basis &&
	sed "s/@/AT/" basis >okay &&
	new=$(git hash-object -t commit -w --stdin <okay) &&
	test_when_finished "remove_object $new" &&
	git update-ref refs/heads/bogus "$new" &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&
	git fsck 2>out &&
	cat out &&
	! grep "commit $new" out
'

test_expect_success 'email with embedded > is not okay' '
	git cat-file commit HEAD >basis &&
	sed "s/@[a-z]/&>/" basis >bad-email &&
	new=$(git hash-object -t commit -w --stdin <bad-email) &&
	test_when_finished "remove_object $new" &&
	git update-ref refs/heads/bogus "$new" &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&
	test_must_fail git fsck 2>out &&
	cat out &&
	grep "error in commit $new" out
'

test_expect_success 'missing < email delimiter is reported nicely' '
	git cat-file commit HEAD >basis &&
	sed "s/<//" basis >bad-email-2 &&
	new=$(git hash-object -t commit -w --stdin <bad-email-2) &&
	test_when_finished "remove_object $new" &&
	git update-ref refs/heads/bogus "$new" &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&
	test_must_fail git fsck 2>out &&
	cat out &&
	grep "error in commit $new.* - bad name" out
'

test_expect_success 'missing email is reported nicely' '
	git cat-file commit HEAD >basis &&
	sed "s/[a-z]* <[^>]*>//" basis >bad-email-3 &&
	new=$(git hash-object -t commit -w --stdin <bad-email-3) &&
	test_when_finished "remove_object $new" &&
	git update-ref refs/heads/bogus "$new" &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&
	test_must_fail git fsck 2>out &&
	cat out &&
	grep "error in commit $new.* - missing email" out
'

test_expect_success '> in name is reported' '
	git cat-file commit HEAD >basis &&
	sed "s/ </> </" basis >bad-email-4 &&
	new=$(git hash-object -t commit -w --stdin <bad-email-4) &&
	test_when_finished "remove_object $new" &&
	git update-ref refs/heads/bogus "$new" &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&
	test_must_fail git fsck 2>out &&
	cat out &&
	grep "error in commit $new" out
'

# date is 2^64 + 1
test_expect_success 'integer overflow in timestamps is reported' '
	git cat-file commit HEAD >basis &&
	sed "s/^\\(author .*>\\) [0-9]*/\\1 18446744073709551617/" \
		<basis >bad-timestamp &&
	new=$(git hash-object -t commit -w --stdin <bad-timestamp) &&
	test_when_finished "remove_object $new" &&
	git update-ref refs/heads/bogus "$new" &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&
	test_must_fail git fsck 2>out &&
	cat out &&
	grep "error in commit $new.*integer overflow" out
'

test_expect_success 'malformatted tree object' '
	test_when_finished "git update-ref -d refs/tags/wrong" &&
	test_when_finished "remove_object \$T" &&
	T=$(
		GIT_INDEX_FILE=test-index &&
		export GIT_INDEX_FILE &&
		rm -f test-index &&
		>x &&
		git add x &&
		T=$(git write-tree) &&
		(
			git cat-file tree $T &&
			git cat-file tree $T
		) |
		git hash-object -w -t tree --stdin
	) &&
	test_must_fail git fsck 2>out &&
	grep "error in tree .*contains duplicate file entries" out
'

test_expect_success 'tag pointing to nonexistent' '
	cat >invalid-tag <<-\EOF &&
	object ffffffffffffffffffffffffffffffffffffffff
	type commit
	tag invalid
	tagger T A Gger <tagger@example.com> 1234567890 -0000

	This is an invalid tag.
	EOF

	tag=$(git hash-object -t tag -w --stdin <invalid-tag) &&
	test_when_finished "remove_object $tag" &&
	echo $tag >.git/refs/tags/invalid &&
	test_when_finished "git update-ref -d refs/tags/invalid" &&
	test_must_fail git fsck --tags >out &&
	cat out &&
	grep "broken link" out
'

test_expect_success 'tag pointing to something else than its type' '
	sha=$(echo blob | git hash-object -w --stdin) &&
	test_when_finished "remove_object $sha" &&
	cat >wrong-tag <<-EOF &&
	object $sha
	type commit
	tag wrong
	tagger T A Gger <tagger@example.com> 1234567890 -0000

	This is an invalid tag.
	EOF

	tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
	test_when_finished "remove_object $tag" &&
	echo $tag >.git/refs/tags/wrong &&
	test_when_finished "git update-ref -d refs/tags/wrong" &&
	test_must_fail git fsck --tags
'

test_expect_success 'tag with incorrect tag name & missing tagger' '
	sha=$(git rev-parse HEAD) &&
	cat >wrong-tag <<-EOF &&
	object $sha
	type commit
	tag wrong name format

	This is an invalid tag.
	EOF

	tag=$(git hash-object -t tag -w --stdin <wrong-tag) &&
	test_when_finished "remove_object $tag" &&
	echo $tag >.git/refs/tags/wrong &&
	test_when_finished "git update-ref -d refs/tags/wrong" &&
	git fsck --tags 2>out &&

	cat >expect <<-EOF &&
	warning in tag $tag: invalid '\''tag'\'' name: wrong name format
	warning in tag $tag: invalid format - expected '\''tagger'\'' line
	EOF
	test_cmp expect out
'

test_expect_success 'tag with bad tagger' '
	sha=$(git rev-parse HEAD) &&
	cat >wrong-tag <<-EOF &&
	object $sha
	type commit
	tag not-quite-wrong
	tagger Bad Tagger Name

	This is an invalid tag.
	EOF

	tag=$(git hash-object --literally -t tag -w --stdin <wrong-tag) &&
	test_when_finished "remove_object $tag" &&
	echo $tag >.git/refs/tags/wrong &&
	test_when_finished "git update-ref -d refs/tags/wrong" &&
	test_must_fail git fsck --tags 2>out &&
	grep "error in tag .*: invalid author/committer" out
'

test_expect_success 'cleaned up' '
	git fsck >actual 2>&1 &&
	test_cmp empty actual
'

test_expect_success 'rev-list --verify-objects' '
	git rev-list --verify-objects --all >/dev/null 2>out &&
	test_cmp empty out
'

test_expect_success 'rev-list --verify-objects with bad sha1' '
	sha=$(echo blob | git hash-object -w --stdin) &&
	old=$(echo $sha | sed "s+^..+&/+") &&
	new=$(dirname $old)/ffffffffffffffffffffffffffffffffffffff &&
	sha="$(dirname $new)$(basename $new)" &&
	mv .git/objects/$old .git/objects/$new &&
	test_when_finished "remove_object $sha" &&
	git update-index --add --cacheinfo 100644 $sha foo &&
	test_when_finished "git read-tree -u --reset HEAD" &&
	tree=$(git write-tree) &&
	test_when_finished "remove_object $tree" &&
	cmt=$(echo bogus | git commit-tree $tree) &&
	test_when_finished "remove_object $cmt" &&
	git update-ref refs/heads/bogus $cmt &&
	test_when_finished "git update-ref -d refs/heads/bogus" &&

	test_might_fail git rev-list --verify-objects refs/heads/bogus >/dev/null 2>out &&
	cat out &&
	grep -q "error: sha1 mismatch 63ffffffffffffffffffffffffffffffffffffff" out
'

_bz='\0'
_bz5="$_bz$_bz$_bz$_bz$_bz"
_bz20="$_bz5$_bz5$_bz5$_bz5"

test_expect_success 'fsck notices blob entry pointing to null sha1' '
	(git init null-blob &&
	 cd null-blob &&
	 sha=$(printf "100644 file$_bz$_bz20" |
	       git hash-object -w --stdin -t tree) &&
	  git fsck 2>out &&
	  cat out &&
	  grep "warning.*null sha1" out
	)
'

test_expect_success 'fsck notices submodule entry pointing to null sha1' '
	(git init null-commit &&
	 cd null-commit &&
	 sha=$(printf "160000 submodule$_bz$_bz20" |
	       git hash-object -w --stdin -t tree) &&
	  git fsck 2>out &&
	  cat out &&
	  grep "warning.*null sha1" out
	)
'

while read name path pretty; do
	while read mode type; do
		: ${pretty:=$path}
		test_expect_success "fsck notices $pretty as $type" '
		(
			git init $name-$type &&
			cd $name-$type &&
			echo content >file &&
			git add file &&
			git commit -m base &&
			blob=$(git rev-parse :file) &&
			tree=$(git rev-parse HEAD^{tree}) &&
			value=$(eval "echo \$$type") &&
			printf "$mode $type %s\t%s" "$value" "$path" >bad &&
			bad_tree=$(git mktree <bad) &&
			git fsck 2>out &&
			cat out &&
			grep "warning.*tree $bad_tree" out
		)'
	done <<-\EOF
	100644 blob
	040000 tree
	EOF
done <<-EOF
dot .
dotdot ..
dotgit .git
dotgit-case .GIT
dotgit-unicode .gI${u200c}T .gI{u200c}T
dotgit-case2 .Git
git-tilde1 git~1
dotgitdot .git.
dot-backslash-case .\\\\.GIT\\\\foobar
dotgit-case-backslash .git\\\\foobar
EOF

test_expect_success 'fsck allows .Ňit' '
	(
		git init not-dotgit &&
		cd not-dotgit &&
		echo content >file &&
		git add file &&
		git commit -m base &&
		blob=$(git rev-parse :file) &&
		printf "100644 blob $blob\t.\\305\\207it" >tree &&
		tree=$(git mktree <tree) &&
		git fsck 2>err &&
		test_line_count = 0 err
	)
'

# create a static test repo which is broken by omitting
# one particular object ($1, which is looked up via rev-parse
# in the new repository).
create_repo_missing () {
	rm -rf missing &&
	git init missing &&
	(
		cd missing &&
		git commit -m one --allow-empty &&
		mkdir subdir &&
		echo content >subdir/file &&
		git add subdir/file &&
		git commit -m two &&
		unrelated=$(echo unrelated | git hash-object --stdin -w) &&
		git tag -m foo tag $unrelated &&
		sha1=$(git rev-parse --verify "$1") &&
		path=$(echo $sha1 | sed 's|..|&/|') &&
		rm .git/objects/$path
	)
}

test_expect_success 'fsck notices missing blob' '
	create_repo_missing HEAD:subdir/file &&
	test_must_fail git -C missing fsck
'

test_expect_success 'fsck notices missing subtree' '
	create_repo_missing HEAD:subdir &&
	test_must_fail git -C missing fsck
'

test_expect_success 'fsck notices missing root tree' '
	create_repo_missing HEAD^{tree} &&
	test_must_fail git -C missing fsck
'

test_expect_success 'fsck notices missing parent' '
	create_repo_missing HEAD^ &&
	test_must_fail git -C missing fsck
'

test_expect_success 'fsck notices missing tagged object' '
	create_repo_missing tag^{blob} &&
	test_must_fail git -C missing fsck
'

test_expect_success 'fsck notices ref pointing to missing commit' '
	create_repo_missing HEAD &&
	test_must_fail git -C missing fsck
'

test_expect_success 'fsck notices ref pointing to missing tag' '
	create_repo_missing tag &&
	test_must_fail git -C missing fsck
'

test_done