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Commit | Line | Data |
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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
f6a971bc | 2 | |
f6a971bc | 3 | #include <errno.h> |
f6a971bc | 4 | #include <qrencode.h> |
cf0fbc49 TA |
5 | #include <stdbool.h> |
6 | #include <stdio.h> | |
7 | #include <stdlib.h> | |
f6a971bc | 8 | |
2fe21124 | 9 | #include "fileio.h" |
f6a971bc | 10 | #include "journal-qrcode.h" |
afc5fc1f | 11 | #include "macro.h" |
f6a971bc LP |
12 | |
13 | #define WHITE_ON_BLACK "\033[40;37;1m" | |
14 | #define NORMAL "\033[0m" | |
15 | ||
16 | static void print_border(FILE *output, unsigned width) { | |
17 | unsigned x, y; | |
18 | ||
19 | /* Four rows of border */ | |
20 | for (y = 0; y < 4; y += 2) { | |
21 | fputs(WHITE_ON_BLACK, output); | |
22 | ||
23 | for (x = 0; x < 4 + width + 4; x++) | |
24 | fputs("\342\226\210", output); | |
25 | ||
26 | fputs(NORMAL "\n", output); | |
27 | } | |
28 | } | |
29 | ||
92221ed7 LP |
30 | int print_qr_code( |
31 | FILE *output, | |
32 | const void *seed, | |
33 | size_t seed_size, | |
34 | uint64_t start, | |
35 | uint64_t interval, | |
36 | const char *hn, | |
37 | sd_id128_t machine) { | |
38 | ||
f6a971bc LP |
39 | FILE *f; |
40 | char *url = NULL; | |
41 | size_t url_size = 0, i; | |
42 | QRcode* qr; | |
43 | unsigned x, y; | |
44 | ||
45 | assert(seed); | |
46 | assert(seed_size > 0); | |
47 | ||
2fe21124 | 48 | f = open_memstream_unlocked(&url, &url_size); |
f6a971bc LP |
49 | if (!f) |
50 | return -ENOMEM; | |
51 | ||
0d536673 | 52 | fputs("fss://", f); |
f6a971bc LP |
53 | |
54 | for (i = 0; i < seed_size; i++) { | |
55 | if (i > 0 && i % 3 == 0) | |
0d536673 | 56 | fputc('-', f); |
f6a971bc LP |
57 | fprintf(f, "%02x", ((uint8_t*) seed)[i]); |
58 | } | |
59 | ||
507f22bd ZJS |
60 | fprintf(f, "/%"PRIx64"-%"PRIx64"?machine=" SD_ID128_FORMAT_STR, |
61 | start, | |
62 | interval, | |
92221ed7 | 63 | SD_ID128_FORMAT_VAL(machine)); |
f6a971bc LP |
64 | |
65 | if (hn) | |
92221ed7 | 66 | fprintf(f, ";hostname=%s", hn); |
f6a971bc LP |
67 | |
68 | if (ferror(f)) { | |
69 | fclose(f); | |
70 | free(url); | |
71 | return -ENOMEM; | |
72 | } | |
73 | ||
74 | fclose(f); | |
75 | ||
76 | qr = QRcode_encodeString(url, 0, QR_ECLEVEL_L, QR_MODE_8, 1); | |
77 | free(url); | |
78 | ||
79 | if (!qr) | |
80 | return -ENOMEM; | |
81 | ||
82 | print_border(output, qr->width); | |
83 | ||
84 | for (y = 0; y < (unsigned) qr->width; y += 2) { | |
85 | const uint8_t *row1, *row2; | |
86 | ||
87 | row1 = qr->data + qr->width * y; | |
88 | row2 = row1 + qr->width; | |
89 | ||
90 | fputs(WHITE_ON_BLACK, output); | |
91 | for (x = 0; x < 4; x++) | |
92 | fputs("\342\226\210", output); | |
93 | ||
94 | for (x = 0; x < (unsigned) qr->width; x ++) { | |
95 | bool a, b; | |
96 | ||
97 | a = row1[x] & 1; | |
98 | b = (y+1) < (unsigned) qr->width ? (row2[x] & 1) : false; | |
99 | ||
100 | if (a && b) | |
101 | fputc(' ', output); | |
102 | else if (a) | |
103 | fputs("\342\226\204", output); | |
104 | else if (b) | |
105 | fputs("\342\226\200", output); | |
106 | else | |
107 | fputs("\342\226\210", output); | |
108 | } | |
109 | ||
110 | for (x = 0; x < 4; x++) | |
111 | fputs("\342\226\210", output); | |
112 | fputs(NORMAL "\n", output); | |
113 | } | |
114 | ||
115 | print_border(output, qr->width); | |
116 | ||
117 | QRcode_free(qr); | |
118 | return 0; | |
119 | } |