Dqn/Code/Dqn_Curl.h

81 lines
3.2 KiB
C

#ifndef DQN_CURL_H
#define DQN_CURL_H
// -----------------------------------------------------------------------------
// NOTE: Dqn_Curl
// -----------------------------------------------------------------------------
// A wrapper over CURL that is primarily used for hot-code reloading by
// packaging the CURL api into a struct that can be passed across DLL
// boundaries.
//
// curl_global_init(CURL_GLOBAL_ALL) must return CURLE_OK before anything
// in this file is used. You may cleanup curl on exit via curl_global_cleanup()
// if desired.
//
// An easy way to generate the curl commands required to query a url is to use
// CURL itself and the option to dump the command to a C-compatible file, i.e.
//
// curl --libcurl RequestToCCode.c -X POST -H "Content-Type: application/json" --data-binary "{\"jsonrpc\": \"2.0\", \"id\": \"0\", \"method\": \"get_service_nodes\", \"params\": []}" oxen.observer:22023/json_rpc
//
// -----------------------------------------------------------------------------
// NOTE: Configuration
// -----------------------------------------------------------------------------
// #define DQN_CURL_IMPLEMENTATION
// Define this in one and only one C++ file to enable the implementation
// code of the header file.
#define CURL_STATICLIB
#define NOMINMAX
#include <curl-7.72.0/include/curl/curl.h>
struct Dqn_CurlProcs
{
CURL *(*curl_easy_init)(void);
CURLcode (*curl_easy_getinfo)(CURL *curl, CURLINFO info, ...);
CURLcode (*curl_easy_setopt)(CURL *handle, CURLoption option, ...);
const char *(*curl_easy_strerror)(CURLcode);
void (*curl_easy_cleanup)(CURL *curl);
CURLM *(*curl_multi_init)(void);
CURLMcode (*curl_multi_perform)(CURLM *multi_handle, int *running_handles);
CURLMsg *(*curl_multi_info_read)(CURLM *multi_handle, int *msgs_in_queue);
CURLMcode (*curl_multi_remove_handle)(CURLM *multi_handle, CURL *curl_handle);
CURLMcode (*curl_multi_add_handle)(CURLM *multi_handle, CURL *curl_handle);
const char *(*curl_multi_strerror)(CURLMcode);
struct curl_slist *(*curl_slist_append)(struct curl_slist *, const char *);
void (*curl_slist_free_all)(struct curl_slist *);
};
Dqn_CurlProcs Dqn_CurlProcs_Init();
#endif // DQN_CURL_H
#if defined(DQN_CURL_IMPLEMENTATION)
#pragma comment (lib, "Advapi32")
#pragma comment (lib, "Crypt32")
#pragma comment (lib, "Ws2_32")
#pragma comment (lib, "Wldap32")
#pragma comment (lib, "Normaliz")
Dqn_CurlProcs Dqn_CurlProcs_Init()
{
Dqn_CurlProcs result = {};
result.curl_easy_init = curl_easy_init;
result.curl_easy_getinfo = curl_easy_getinfo;
result.curl_easy_setopt = curl_easy_setopt;
result.curl_easy_strerror = curl_easy_strerror;
result.curl_easy_cleanup = curl_easy_cleanup;
result.curl_multi_init = curl_multi_init;
result.curl_multi_perform = curl_multi_perform;
result.curl_multi_info_read = curl_multi_info_read;
result.curl_multi_remove_handle = curl_multi_remove_handle;
result.curl_multi_add_handle = curl_multi_add_handle;
result.curl_multi_strerror = curl_multi_strerror;
result.curl_slist_append = curl_slist_append;
result.curl_slist_free_all = curl_slist_free_all;
return result;
}
#endif // DQN_CURL_IMPLEMENTATION