1 /***************************************************************************
2  *                                  _   _ ____  _
3  *  Project                     ___| | | |  _ \| |
4  *                             / __| | | | |_) | |
5  *                            | (__| |_| |  _ <| |___
6  *                             \___|\___/|_| \_\_____|
7  *
8  * Copyright (C) 1998 - 2018, 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 /* <DESC>
23  * Download a given URL into a local file named page.out.
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(int argc, char *argv[])
39 {
40   CURL *curl_handle;
41   static const char *pagefilename = "page.out";
42   FILE *pagefile;
43 
44   if(argc < 2) {
45     printf("Usage: %s <URL>\n", argv[0]);
46     return 1;
47   }
48 
49   curl_global_init(CURL_GLOBAL_ALL);
50 
51   /* init the curl session */
52   curl_handle = curl_easy_init();
53 
54   /* set URL to get here */
55   curl_easy_setopt(curl_handle, CURLOPT_URL, argv[1]);
56 
57   /* Switch on full protocol/debug output while testing */
58   curl_easy_setopt(curl_handle, CURLOPT_VERBOSE, 1L);
59 
60   /* disable progress meter, set to 0L to enable and disable debug output */
61   curl_easy_setopt(curl_handle, CURLOPT_NOPROGRESS, 1L);
62 
63   /* send all data to this function  */
64   curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, write_data);
65 
66   /* open the file */
67   pagefile = fopen(pagefilename, "wb");
68   if(pagefile) {
69 
70     /* write the page body to this file handle */
71     curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, pagefile);
72 
73     /* get it! */
74     curl_easy_perform(curl_handle);
75 
76     /* close the header file */
77     fclose(pagefile);
78   }
79 
80   /* cleanup curl stuff */
81   curl_easy_cleanup(curl_handle);
82 
83   curl_global_cleanup();
84 
85   return 0;
86 }
87