1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2011, 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 http://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/* 27 * This is an example showing how to get a single file from an FTP server. 28 * It delays the actual destination file creation until the first write 29 * callback so that it won't create an empty file in case the remote file 30 * doesn't exist or something else fails. 31 */ 32 33struct FtpFile { 34 const char *filename; 35 FILE *stream; 36}; 37 38static size_t my_fwrite(void *buffer, size_t size, size_t nmemb, void *stream) 39{ 40 struct FtpFile *out=(struct FtpFile *)stream; 41 if(out && !out->stream) { 42 /* open file for writing */ 43 out->stream=fopen(out->filename, "wb"); 44 if(!out->stream) 45 return -1; /* failure, can't open file to write */ 46 } 47 return fwrite(buffer, size, nmemb, out->stream); 48} 49 50 51int main(void) 52{ 53 CURL *curl; 54 CURLcode res; 55 struct FtpFile ftpfile={ 56 "curl.tar.gz", /* name to store the file as if succesful */ 57 NULL 58 }; 59 60 curl_global_init(CURL_GLOBAL_DEFAULT); 61 62 curl = curl_easy_init(); 63 if(curl) { 64 /* 65 * You better replace the URL with one that works! 66 */ 67 curl_easy_setopt(curl, CURLOPT_URL, 68 "ftp://ftp.example.com/pub/www/utilities/curl/curl-7.9.2.tar.gz"); 69 /* Define our callback to get called when there's data to be written */ 70 curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite); 71 /* Set a pointer to our struct to pass to the callback */ 72 curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ftpfile); 73 74 /* Switch on full protocol/debug output */ 75 curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L); 76 77 res = curl_easy_perform(curl); 78 79 /* always cleanup */ 80 curl_easy_cleanup(curl); 81 82 if(CURLE_OK != res) { 83 /* we failed */ 84 fprintf(stderr, "curl told us %d\n", res); 85 } 86 } 87 88 if(ftpfile.stream) 89 fclose(ftpfile.stream); /* close the local file */ 90 91 curl_global_cleanup(); 92 93 return 0; 94} 95