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