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    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@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: #include <stdio.h>
   23: 
   24: #include <curl/curl.h>
   25: 
   26: /* <DESC>
   27:  * Similar to ftpget.c but also stores the received response-lines
   28:  * in a separate file using our own callback!
   29:  * </DESC>
   30:  */
   31: static size_t
   32: write_response(void *ptr, size_t size, size_t nmemb, void *data)
   33: {
   34:   FILE *writehere = (FILE *)data;
   35:   return fwrite(ptr, size, nmemb, writehere);
   36: }
   37: 
   38: #define FTPBODY "ftp-list"
   39: #define FTPHEADERS "ftp-responses"
   40: 
   41: int main(void)
   42: {
   43:   CURL *curl;
   44:   CURLcode res;
   45:   FILE *ftpfile;
   46:   FILE *respfile;
   47: 
   48:   /* local file name to store the file as */
   49:   ftpfile = fopen(FTPBODY, "wb"); /* b is binary, needed on win32 */
   50: 
   51:   /* local file name to store the FTP server's response lines in */
   52:   respfile = fopen(FTPHEADERS, "wb"); /* b is binary, needed on win32 */
   53: 
   54:   curl = curl_easy_init();
   55:   if(curl) {
   56:     /* Get a file listing from sunet */
   57:     curl_easy_setopt(curl, CURLOPT_URL, "ftp://ftp.example.com/");
   58:     curl_easy_setopt(curl, CURLOPT_WRITEDATA, ftpfile);
   59:     /* If you intend to use this on windows with a libcurl DLL, you must use
   60:        CURLOPT_WRITEFUNCTION as well */
   61:     curl_easy_setopt(curl, CURLOPT_HEADERFUNCTION, write_response);
   62:     curl_easy_setopt(curl, CURLOPT_HEADERDATA, respfile);
   63:     res = curl_easy_perform(curl);
   64:     /* Check for errors */
   65:     if(res != CURLE_OK)
   66:       fprintf(stderr, "curl_easy_perform() failed: %s\n",
   67:               curl_easy_strerror(res));
   68: 
   69:     /* always cleanup */
   70:     curl_easy_cleanup(curl);
   71:   }
   72: 
   73:   fclose(ftpfile); /* close the local file */
   74:   fclose(respfile); /* close the response file */
   75: 
   76:   return 0;
   77: }