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/*
* (C) 2013-2024 by Christian Hesse <mail@eworm.de>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
#ifndef _LIBCQRLOGO_H
#define _LIBCQRLOGO_H
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <inttypes.h>
#include <stdbool.h>
#include <png.h>
#include <zlib.h>
#include <qrencode.h>
#include <iniparser/iniparser.h>
/* a bitmap */
struct cqr_bitmap {
unsigned int width;
unsigned int height;
uint8_t *pixel;
};
/* finished PNG image */
struct cqr_png {
unsigned char * buffer;
size_t size;
};
/* config */
struct cqr_conf {
uint8_t scale;
uint8_t border;
uint8_t level;
bool overwrite;
};
#define CQR_HEADER_CACHE_CONTROL "Cache-Control: no-cache, max-age=0\n"
#define CQR_HEADER_CONTENT_TYPE "Content-Type: image/png\n"
#define CQR_HEADER_CONTENT_DISPOSITION "Content-Disposition: inline; filename=\"cqrlogo.png\"\n"
#define CQR_HEADER_PRAGMA "Pragma: no-cache\n"
#define CQR_META_COMMENT 0x1
#define CQR_META_REFERER 0x2
#define CQR_META_VERSION 0x4
#define CQR_META_LIBVERSION 0x8
#define CQR_META_ALL CQR_META_COMMENT + CQR_META_REFERER + CQR_META_VERSION + CQR_META_LIBVERSION
#define CQR_COMMENTSTR "QR-Code created by cqrlogo - https://github.com/eworm-de/cqrlogo"
#define CQR_VERSIONSTR VERSION " (" __DATE__ ", " __TIME__ ")"
#define CQR_LIBSSTR "libqrencode %s, libpng %s, zlib %s"
/*** cqr_png_write_fn ***/
void cqr_png_write_fn(png_structp png_ptr, png_bytep data, png_size_t length);
#if defined PNG_TEXT_SUPPORTED
/*** cqr_png_add_text ***/
png_text * cqr_png_add_text(png_text *pngtext, unsigned int *textcount, char *key, char *text);
#endif
/*** cqr_bitmap_new ***/
struct cqr_bitmap * cqr_bitmap_new(int width, int height);
/*** cqr_bitmap_free ***/
void cqr_bitmap_free(struct cqr_bitmap * bitmap);
/*** cqr_encode_qrcode_to_bitmap ***/
struct cqr_bitmap * cqr_encode_qrcode_to_bitmap(const char *text, const struct cqr_conf conf);
/*** cqr_bitmap_to_png ***/
struct cqr_png * cqr_bitmap_to_png(struct cqr_bitmap *bitmap, const char *text, const uint8_t meta);
/*** cqr_encode_qrcode_to_png ***/
struct cqr_png * cqr_encode_qrcode_to_png(const char *text, const struct cqr_conf conf, const uint8_t meta);
/*** cqr_get_query_uint ***/
unsigned int cqr_get_query_uint(const char *query_string, const char *pattern,
unsigned int value, unsigned int min, unsigned int max);
/*** get_query_char ***/
char * cqr_get_query_char(const char *query_string, const char *pattern);
/*** cqr_get_ini_value ***/
unsigned int cqr_get_ini_value(dictionary * ini, uint8_t type, const char * section, const char * parameter,
unsigned int value, unsigned int min, unsigned int max);
/*** cqr_conf_file ***/
void cqr_conf_file(const char * server_name, struct cqr_conf * conf);
/*** cqr_conf_string ***/
void cqr_conf_string(const char * query_string, struct cqr_conf * conf);
#endif /* _LIBCQRLOGO_H */
// vim: set syntax=c:
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