multipartparser.h

/*

MIT License

Copyright (c) 2019 François Colas

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

*/

#ifndef MULTIPARTPARSER_H
#define MULTIPARTPARSER_H
#ifdef __cplusplus
extern "C" {
#endif

#include <stddef.h>
#include <stdint.h>
#include <sys/types.h>

typedef struct multipartparser multipartparser;
typedef struct multipartparser_callbacks multipartparser_callbacks;

typedef int (*multipart_cb) (multipartparser*);
typedef int (*multipart_data_cb) (multipartparser*, const char* data, size_t size);

struct multipartparser {
    /** PRIVATE **/
    char        boundary[70];
    int         boundary_length;
    int         index;
    uint16_t    state;

    /** PUBLIC **/
    void* data;
};

struct multipartparser_callbacks {
    multipart_cb      on_body_begin;
    multipart_cb      on_part_begin;
    multipart_data_cb on_header_field;
    multipart_data_cb on_header_value;
    multipart_cb      on_headers_complete;
    multipart_data_cb on_data;
    multipart_cb      on_part_end;
    multipart_cb      on_body_end;
};

void multipartparser_init(multipartparser* parser, const char* boundary);

void multipartparser_callbacks_init(multipartparser_callbacks* callbacks);

size_t multipartparser_execute(multipartparser* parser,
                               multipartparser_callbacks* callbacks,
                               const char* data,
                               size_t size);

#ifdef __cplusplus
}
#endif
#endif // MULTIPARTPARSER_H