http_response.c

/***============================================================================================================================
 * Depedencies inclusion
 * Necessary dependencies should be declared here. Header file should contain as little dependecies declarations as possible
 *=============================================================================================================================*/
 
#include "pbuf.h"
#include "cmsis_os.h"
#include "http_response.h"
#include <string.h>
 
 
/***============================================================================================================================
 * Private functions definitions
 * These functions are only accessible from within the file's scope
 *=============================================================================================================================*/
 
static void _http_response_dynamic_cat(http_response_s *res, char *data){
    uint16_t data_len = strlen(data);
    res->data_ptr = pvPortRealloc(res->data_ptr, res->data_len + data_len);
    memmove(res->data_ptr+res->data_len, data, data_len);
    res->data_len+=data_len;
}
 
 
/***============================================================================================================================
 * Public functions definitions
 * These functions can be accessed outside of the file's scope
 *=============================================================================================================================*/
 
http_response_s *http_response_new(void){
 
    http_response_s *res = pvPortMalloc(sizeof(http_response_s));
 
    res->data_ptr       = NULL;
    res->is_static      = 1;
    res->data_ptr_index = 0;
    res->data_len       = 0;
 
    return res;
 
}
 
void http_response_free(http_response_s *res){
 
    if(!res->is_static){
        vPortFree(res->data_ptr);
    }
 
    res->data_ptr       = NULL;
    res->data_ptr_index = 0;
    res->data_len       = 0;
 
    vPortFree(res);
 
}
 
uint32_t http_response_get_bytes_left(http_response_s *res){
    return res->data_len - res->data_ptr_index;
}
 
void http_response_prepare_dynamic(http_response_s *res, http_status_code_e status_code, http_content_types_e content_type, char *content){
 
    char content_length_str[HTTP_RESPONSE_CONTENT_LENGTH_MAX_LENGTH];
 
    res->is_static = HTTP_RESPONSE_IS_DYNAMIC;
 
    itoa(strlen(content), content_length_str, 10);
 
    _http_response_dynamic_cat(res, http_header_field_str[HTTP_HEADER_FIELD_STATUS_CODE]);
    _http_response_dynamic_cat(res, http_status_codes_str[status_code]);
    _http_response_dynamic_cat(res, STR_COMMON_CRLF);
    _http_response_dynamic_cat(res, http_header_field_str[HTTP_HEADER_FIELD_CONTENT_TYPE]);
    _http_response_dynamic_cat(res, http_content_types_str[content_type]);
    _http_response_dynamic_cat(res, STR_COMMON_CRLF);
    _http_response_dynamic_cat(res, http_header_field_str[HTTP_HEADER_FIELD_CONTENT_LENGTH]);
    _http_response_dynamic_cat(res, content_length_str);
    _http_response_dynamic_cat(res, STR_COMMON_CRLF STR_COMMON_CRLF);
    _http_response_dynamic_cat(res, content);
 
}