4b61c87511
As a follow-up for db3f45e2d2 let's do the
same for all other cases where we create a FILE* with local scope and
know that no other threads hence can have access to it.
For most cases this shouldn't change much really, but this should speed
dbus introspection and calender time formatting up a bit.
136 lines
3.7 KiB
C
136 lines
3.7 KiB
C
/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include <qrencode.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "journal-qrcode.h"
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#include "macro.h"
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#define WHITE_ON_BLACK "\033[40;37;1m"
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#define NORMAL "\033[0m"
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static void print_border(FILE *output, unsigned width) {
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unsigned x, y;
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/* Four rows of border */
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for (y = 0; y < 4; y += 2) {
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fputs(WHITE_ON_BLACK, output);
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for (x = 0; x < 4 + width + 4; x++)
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fputs("\342\226\210", output);
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fputs(NORMAL "\n", output);
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}
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}
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int print_qr_code(
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FILE *output,
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const void *seed,
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size_t seed_size,
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uint64_t start,
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uint64_t interval,
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const char *hn,
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sd_id128_t machine) {
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FILE *f;
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char *url = NULL;
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size_t url_size = 0, i;
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QRcode* qr;
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unsigned x, y;
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assert(seed);
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assert(seed_size > 0);
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f = open_memstream(&url, &url_size);
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if (!f)
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return -ENOMEM;
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fputs_unlocked("fss://", f);
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for (i = 0; i < seed_size; i++) {
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if (i > 0 && i % 3 == 0)
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fputc_unlocked('-', f);
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fprintf(f, "%02x", ((uint8_t*) seed)[i]);
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}
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fprintf(f, "/%"PRIx64"-%"PRIx64"?machine=" SD_ID128_FORMAT_STR,
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start,
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interval,
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SD_ID128_FORMAT_VAL(machine));
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if (hn)
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fprintf(f, ";hostname=%s", hn);
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if (ferror(f)) {
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fclose(f);
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free(url);
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return -ENOMEM;
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}
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fclose(f);
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qr = QRcode_encodeString(url, 0, QR_ECLEVEL_L, QR_MODE_8, 1);
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free(url);
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if (!qr)
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return -ENOMEM;
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print_border(output, qr->width);
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for (y = 0; y < (unsigned) qr->width; y += 2) {
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const uint8_t *row1, *row2;
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row1 = qr->data + qr->width * y;
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row2 = row1 + qr->width;
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fputs(WHITE_ON_BLACK, output);
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for (x = 0; x < 4; x++)
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fputs("\342\226\210", output);
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for (x = 0; x < (unsigned) qr->width; x ++) {
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bool a, b;
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a = row1[x] & 1;
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b = (y+1) < (unsigned) qr->width ? (row2[x] & 1) : false;
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if (a && b)
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fputc(' ', output);
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else if (a)
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fputs("\342\226\204", output);
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else if (b)
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fputs("\342\226\200", output);
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else
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fputs("\342\226\210", output);
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}
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for (x = 0; x < 4; x++)
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fputs("\342\226\210", output);
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fputs(NORMAL "\n", output);
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}
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print_border(output, qr->width);
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QRcode_free(qr);
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return 0;
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}
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