0c69794138
These lines are generally out-of-date, incomplete and unnecessary. With SPDX and git repository much more accurate and fine grained information about licensing and authorship is available, hence let's drop the per-file copyright notice. Of course, removing copyright lines of others is problematic, hence this commit only removes my own lines and leaves all others untouched. It might be nicer if sooner or later those could go away too, making git the only and accurate source of authorship information.
122 lines
3.1 KiB
C
122 lines
3.1 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
|
|
|
|
#include <errno.h>
|
|
#include <qrencode.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdio_ext.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "journal-qrcode.h"
|
|
#include "macro.h"
|
|
|
|
#define WHITE_ON_BLACK "\033[40;37;1m"
|
|
#define NORMAL "\033[0m"
|
|
|
|
static void print_border(FILE *output, unsigned width) {
|
|
unsigned x, y;
|
|
|
|
/* Four rows of border */
|
|
for (y = 0; y < 4; y += 2) {
|
|
fputs(WHITE_ON_BLACK, output);
|
|
|
|
for (x = 0; x < 4 + width + 4; x++)
|
|
fputs("\342\226\210", output);
|
|
|
|
fputs(NORMAL "\n", output);
|
|
}
|
|
}
|
|
|
|
int print_qr_code(
|
|
FILE *output,
|
|
const void *seed,
|
|
size_t seed_size,
|
|
uint64_t start,
|
|
uint64_t interval,
|
|
const char *hn,
|
|
sd_id128_t machine) {
|
|
|
|
FILE *f;
|
|
char *url = NULL;
|
|
size_t url_size = 0, i;
|
|
QRcode* qr;
|
|
unsigned x, y;
|
|
|
|
assert(seed);
|
|
assert(seed_size > 0);
|
|
|
|
f = open_memstream(&url, &url_size);
|
|
if (!f)
|
|
return -ENOMEM;
|
|
|
|
(void) __fsetlocking(f, FSETLOCKING_BYCALLER);
|
|
|
|
fputs("fss://", f);
|
|
|
|
for (i = 0; i < seed_size; i++) {
|
|
if (i > 0 && i % 3 == 0)
|
|
fputc('-', f);
|
|
fprintf(f, "%02x", ((uint8_t*) seed)[i]);
|
|
}
|
|
|
|
fprintf(f, "/%"PRIx64"-%"PRIx64"?machine=" SD_ID128_FORMAT_STR,
|
|
start,
|
|
interval,
|
|
SD_ID128_FORMAT_VAL(machine));
|
|
|
|
if (hn)
|
|
fprintf(f, ";hostname=%s", hn);
|
|
|
|
if (ferror(f)) {
|
|
fclose(f);
|
|
free(url);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
qr = QRcode_encodeString(url, 0, QR_ECLEVEL_L, QR_MODE_8, 1);
|
|
free(url);
|
|
|
|
if (!qr)
|
|
return -ENOMEM;
|
|
|
|
print_border(output, qr->width);
|
|
|
|
for (y = 0; y < (unsigned) qr->width; y += 2) {
|
|
const uint8_t *row1, *row2;
|
|
|
|
row1 = qr->data + qr->width * y;
|
|
row2 = row1 + qr->width;
|
|
|
|
fputs(WHITE_ON_BLACK, output);
|
|
for (x = 0; x < 4; x++)
|
|
fputs("\342\226\210", output);
|
|
|
|
for (x = 0; x < (unsigned) qr->width; x ++) {
|
|
bool a, b;
|
|
|
|
a = row1[x] & 1;
|
|
b = (y+1) < (unsigned) qr->width ? (row2[x] & 1) : false;
|
|
|
|
if (a && b)
|
|
fputc(' ', output);
|
|
else if (a)
|
|
fputs("\342\226\204", output);
|
|
else if (b)
|
|
fputs("\342\226\200", output);
|
|
else
|
|
fputs("\342\226\210", output);
|
|
}
|
|
|
|
for (x = 0; x < 4; x++)
|
|
fputs("\342\226\210", output);
|
|
fputs(NORMAL "\n", output);
|
|
}
|
|
|
|
print_border(output, qr->width);
|
|
|
|
QRcode_free(qr);
|
|
return 0;
|
|
}
|