Imported Upstream version 2.3.7
[platform/upstream/cryptsetup.git] / tests / generators / generate-luks2-non-null-bytes-beyond-json0.img.sh
1 #!/bin/bash
2
3 . lib.sh
4
5 #
6 # *** Description ***
7 #
8 # generate primary header with json area containing illegal bytes
9 # beyond well-formed json format.
10 #
11 # secondary header is corrupted on purpose as well
12 #
13
14 # $1 full target dir
15 # $2 full source luks2 image
16
17 QUOTE="[Homer J. Simpson]: Keep looking shocked and move slowly towards the cake."
18 SPACE=20
19
20 function prepare()
21 {
22         cp $SRC_IMG $TGT_IMG
23         test -d $TMPDIR || mkdir $TMPDIR
24         read_luks2_json0 $TGT_IMG $TMPDIR/json0
25         read_luks2_bin_hdr0 $TGT_IMG $TMPDIR/hdr0
26         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr1
27 }
28
29 function generate()
30 {
31         read -r json_str < $TMPDIR/json0
32         json_len_orig=${#json_str}
33         json_len=$((json_len_orig+${#QUOTE}+SPACE))
34         test ${#json_str} -lt $((LUKS2_JSON_SIZE*512)) || exit 2
35
36         printf '%s' "$QUOTE" | _dd of=$TMPDIR/json0 seek=$((json_len_orig+SPACE)) bs=1 conv=notrunc
37
38         merge_bin_hdr_with_json $TMPDIR/hdr0 $TMPDIR/json0 $TMPDIR/area0
39         erase_checksum $TMPDIR/area0
40         chks0=$(calc_sha256_checksum_file $TMPDIR/area0)
41         write_checksum $chks0 $TMPDIR/area0
42         write_luks2_hdr0 $TMPDIR/area0 $TGT_IMG
43         kill_bin_hdr $TMPDIR/hdr1
44         write_luks2_hdr1 $TMPDIR/hdr1 $TGT_IMG
45 }
46
47 function check()
48 {
49         read_luks2_bin_hdr1 $TGT_IMG $TMPDIR/hdr_res1
50         local str_res1=$(head -c 6 $TMPDIR/hdr_res1)
51         test "$str_res1" = "VACUUM" || exit 2
52
53         read_luks2_json0 $TGT_IMG $TMPDIR/json_res0
54         chks_res0=$(read_sha256_checksum $TGT_IMG)
55         test "$chks0" = "$chks_res0" || exit 2
56
57         _dd if=$TMPDIR/json_res0 of=$TMPDIR/quote skip=$((json_len_orig+SPACE)) count=${#QUOTE} bs=1
58         json_str_res0=$(head -c ${#QUOTE} $TMPDIR/quote)
59         test "$json_str_res0" = "$QUOTE" || exit 2
60 }
61
62 function cleanup()
63 {
64         rm -f $TMPDIR/*
65         rm -fd $TMPDIR
66 }
67
68 test $# -eq 2 || exit 1
69
70 TGT_IMG=$1/$(test_img_name $0)
71 SRC_IMG=$2
72
73 prepare
74 generate
75 check
76 cleanup