1 /*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel (at) haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at https://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22 /* <DESC> 23 * Simple HTTP GET that stores the headers in a separate file 24 * </DESC> 25 */ 26 #include <stdio.h> 27 #include <stdlib.h> 28 #include <unistd.h> 29 30 #include <curl/curl.h> 31 32 static size_t write_data(void *ptr, size_t size, size_t nmemb, void *stream) 33 { 34 size_t written = fwrite(ptr, size, nmemb, (FILE *)stream); 35 return written; 36 } 37 38 int main(void) 39 { 40 CURL *curl_handle; 41 static const char *headerfilename = "head.out"; 42 FILE *headerfile; 43 static const char *bodyfilename = "body.out"; 44 FILE *bodyfile; 45 46 curl_global_init(CURL_GLOBAL_ALL); 47 48 /* init the curl session */ 49 curl_handle = curl_easy_init(); 50 51 /* set URL to get */ 52 curl_easy_setopt(curl_handle, CURLOPT_URL, "https://example.com"); 53 54 /* no progress meter please */ 55 curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L); 56 57 /* send all data to this function */ 58 curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data); 59 60 /* open the header file */ 61 headerfile = fopen(headerfilename, "wb"); 62 if(!headerfile) { 63 curl_easy_cleanup(curl_handle); 64 return -1; 65 } 66 67 /* open the body file */ 68 bodyfile = fopen(bodyfilename, "wb"); 69 if(!bodyfile) { 70 curl_easy_cleanup(curl_handle); 71 fclose(headerfile); 72 return -1; 73 } 74 75 /* we want the headers be written to this file handle */ 76 curl_easy_setopt(curl_handle, CURLOPT_HEADERDATA, headerfile); 77 78 /* we want the body be written to this file handle instead of stdout */ 79 curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, bodyfile); 80 81 /* get it! */ 82 curl_easy_perform(curl_handle); 83 84 /* close the header file */ 85 fclose(headerfile); 86 87 /* close the body file */ 88 fclose(bodyfile); 89 90 /* cleanup curl stuff */ 91 curl_easy_cleanup(curl_handle); 92 93 return 0; 94 } 95