curl.h

#ifndef _CRTX_CURL_H
#define _CRTX_CURL_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*
 * Mario Kicherer (dev@kicherer.org) 2019
 *
 */
 
#include <curl/curl.h>
 
#include "core.h"
 
struct crtx_curl_listener;
 
typedef int crtx_CURLOPT_XFERINFOFUNCTION(void *userdata, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow);
typedef int crtx_CURLOPT_PROGRESSFUNCTION(void *userdata, double dltotal, double dlnow, double ultotal, double ulnow);
typedef size_t crtx_CURLOPT_WRITEFUNCTION(char *ptr, size_t size, size_t nmemb, void *userdata);
typedef size_t crtx_CURLOPT_HEADERFUNCTION(char *buffer, size_t size, size_t nitems, void *userdata);
typedef int crtx_curl_done_cb(void *userdata, struct CURLMsg *msg, long response_code, long error_code);
 
struct crtx_curl_listener {
    struct crtx_listener_base base;
    
    CURL *easy;
    char *url;
    char error[CURL_ERROR_SIZE];
    
    #if LIBCURL_VERSION_NUM >= 0x072000 // 0.7.32
    crtx_CURLOPT_XFERINFOFUNCTION *progress_callback;
    #else
    crtx_CURLOPT_PROGRESSFUNCTION *progress_callback;
    #endif
    void *progress_cb_data;
    crtx_CURLOPT_HEADERFUNCTION *header_callback;
    void *header_cb_data;
    crtx_CURLOPT_WRITEFUNCTION *write_callback;
    void *write_cb_data;
    FILE *write_file_ptr;
    int write_fd;
    
    crtx_curl_done_cb *done_callback;
    void *done_cb_data;
};
 
#define CRTX_EVENT_TYPE_FAMILY_CURL (500)
#define CRTX_CURL_ET_FINISHED (CRTX_EVENT_TYPE_FAMILY_CURL + 1)
#define CRTX_CURL_ET_PROGRESS (CRTX_EVENT_TYPE_FAMILY_CURL + 2)
#define CRTX_CURL_ET_HEADER (CRTX_EVENT_TYPE_FAMILY_CURL + 3)
 
int crtx_curl_progress_callback(void *userdata, curl_off_t dltotal, curl_off_t dlnow, curl_off_t ultotal, curl_off_t ulnow);
size_t crtx_curl_header_callback(char *buffer, size_t size, size_t nitems, void *userdata);
 
struct crtx_listener_base *crtx_setup_curl_listener(void *options);
CRTX_DECLARE_ALLOC_FUNCTION(curl)
 
void crtx_curl_init();
void crtx_curl_finish();
 
#ifdef __cplusplus
}
#endif
 
#endif