forked from cpp/cWikiBot
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#include "http.h"
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#include <string.h>
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#include <curl/curl.h>
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#include <stdlib.h>
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int curl_setup = 0;
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char* request(char *url)
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{
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// initialize curl on the first call of this function
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if(curl_setup == 0)
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{
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curl_global_init(CURL_GLOBAL_DEFAULT);
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curl_setup=1;
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}
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struct httpResponse_t httpResponse;
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httpResponse.response = malloc(1);
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httpResponse.size = 0;
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CURL *httpHandler = curl_easy_init();
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CURLcode return_code;
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if(httpHandler) {
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curl_easy_setopt(httpHandler,CURLOPT_URL, url);
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curl_easy_setopt(httpHandler,CURLOPT_WRITEFUNCTION, httpResponseCallback);
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curl_easy_setopt(httpHandler,CURLOPT_WRITEDATA, (void *)&httpResponse);
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return_code = curl_easy_perform(httpHandler);
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}
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else
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{
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fprintf(stderr, "CURL Error");
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return NULL;
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}
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if(return_code != CURLE_OK)
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{
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fprintf(stderr, "HTTP Error: %s",curl_easy_strerror(return_code));
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return NULL;
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}
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return httpResponse.response;
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}
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size_t httpResponseCallback(char *data, size_t wordlength, size_t bytecount, void *out)
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{
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// wordlength should be always 1, but this appears to be more secure.
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size_t size = wordlength * bytecount;
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struct httpResponse_t *mem = (struct httpResponse_t *) out;
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char *newData = realloc(mem->response, mem->size + size +1);
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if(newData == NULL)
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return 0;
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mem->response = newData;
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memcpy(&(mem->response[mem->size]), data, size);
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mem->size += size;
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// Null-terminate the byte chunk, to effectively have a C-String.
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mem->response[mem-> size] = 0;
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return size;
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}
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