1 /***************************************************************************
2 * _ _ ____ _
3 * Project ___| | | | _ \| |
4 * / __| | | | |_) | |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
7 *
8 * Copyright (C) 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.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 * SPDX-License-Identifier: curl
22 *
23 ***************************************************************************/
24 /* <DESC>
25 * HTTP PUT with easy interface and read callback
26 * </DESC>
27 */
28 #include <stdio.h>
29 #include <fcntl.h>
30 #include <sys/stat.h>
31 #include <curl/curl.h>
32
33 /*
34 * This example shows an HTTP PUT operation. PUTs a file given as a command
35 * line argument to the URL also given on the command line.
36 *
37 * This example also uses its own read callback.
38 *
39 * Here's an article on how to setup a PUT handler for Apache:
40 * http://www.apacheweek.com/features/put
41 */
42
read_callback(char * ptr,size_t size,size_t nmemb,void * stream)43 static size_t read_callback(char *ptr, size_t size, size_t nmemb, void *stream)
44 {
45 size_t retcode;
46 unsigned long nread;
47
48 /* in real-world cases, this would probably get this data differently
49 as this fread() stuff is exactly what the library already would do
50 by default internally */
51 retcode = fread(ptr, size, nmemb, stream);
52
53 if(retcode > 0) {
54 nread = (unsigned long)retcode;
55 fprintf(stderr, "*** We read %lu bytes from file\n", nread);
56 }
57
58 return retcode;
59 }
60
main(int argc,char ** argv)61 int main(int argc, char **argv)
62 {
63 CURL *curl;
64 CURLcode res;
65 FILE * hd_src;
66 struct stat file_info;
67
68 char *file;
69 char *url;
70
71 if(argc < 3)
72 return 1;
73
74 file = argv[1];
75 url = argv[2];
76
77 /* get the file size of the local file */
78 stat(file, &file_info);
79
80 /* get a FILE * of the same file, could also be made with
81 fdopen() from the previous descriptor, but hey this is just
82 an example! */
83 hd_src = fopen(file, "rb");
84
85 /* In Windows, this inits the Winsock stuff */
86 curl_global_init(CURL_GLOBAL_ALL);
87
88 /* get a curl handle */
89 curl = curl_easy_init();
90 if(curl) {
91 /* we want to use our own read function */
92 curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
93
94 /* enable uploading (implies PUT over HTTP) */
95 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
96
97 /* specify target URL, and note that this URL should include a file
98 name, not only a directory */
99 curl_easy_setopt(curl, CURLOPT_URL, url);
100
101 /* now specify which file to upload */
102 curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
103
104 /* provide the size of the upload, we typecast the value to curl_off_t
105 since we must be sure to use the correct data size */
106 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
107 (curl_off_t)file_info.st_size);
108
109 /* Now run off and do what you have been told! */
110 res = curl_easy_perform(curl);
111 /* Check for errors */
112 if(res != CURLE_OK)
113 fprintf(stderr, "curl_easy_perform() failed: %s\n",
114 curl_easy_strerror(res));
115
116 /* always cleanup */
117 curl_easy_cleanup(curl);
118 }
119 fclose(hd_src); /* close the local file */
120
121 curl_global_cleanup();
122 return 0;
123 }
124
