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 #ifdef _WIN32
34 #undef stat
35 #define stat _stat
36 #endif
37
38 /*
39 * This example shows an HTTP PUT operation. PUTs a file given as a command
40 * line argument to the URL also given on the command line.
41 *
42 * This example also uses its own read callback.
43 *
44 * Here's an article on how to setup a PUT handler for Apache:
45 * http://www.apacheweek.com/features/put
46 */
47
read_callback(char * ptr,size_t size,size_t nmemb,void * stream)48 static size_t read_callback(char *ptr, size_t size, size_t nmemb, void *stream)
49 {
50 size_t retcode;
51 unsigned long nread;
52
53 /* in real-world cases, this would probably get this data differently
54 as this fread() stuff is exactly what the library already would do
55 by default internally */
56 retcode = fread(ptr, size, nmemb, stream);
57
58 if(retcode > 0) {
59 nread = (unsigned long)retcode;
60 fprintf(stderr, "*** We read %lu bytes from file\n", nread);
61 }
62
63 return retcode;
64 }
65
main(int argc,char ** argv)66 int main(int argc, char **argv)
67 {
68 CURL *curl;
69 CURLcode res;
70 FILE * hd_src;
71 struct stat file_info;
72
73 char *file;
74 char *url;
75
76 if(argc < 3)
77 return 1;
78
79 file = argv[1];
80 url = argv[2];
81
82 /* get the file size of the local file */
83 stat(file, &file_info);
84
85 /* get a FILE * of the same file, could also be made with
86 fdopen() from the previous descriptor, but hey this is just
87 an example! */
88 hd_src = fopen(file, "rb");
89
90 /* In Windows, this inits the Winsock stuff */
91 curl_global_init(CURL_GLOBAL_ALL);
92
93 /* get a curl handle */
94 curl = curl_easy_init();
95 if(curl) {
96 /* we want to use our own read function */
97 curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
98
99 /* enable uploading (implies PUT over HTTP) */
100 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
101
102 /* specify target URL, and note that this URL should include a file
103 name, not only a directory */
104 curl_easy_setopt(curl, CURLOPT_URL, url);
105
106 /* now specify which file to upload */
107 curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
108
109 /* provide the size of the upload, we typecast the value to curl_off_t
110 since we must be sure to use the correct data size */
111 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
112 (curl_off_t)file_info.st_size);
113
114 /* Now run off and do what you have been told! */
115 res = curl_easy_perform(curl);
116 /* Check for errors */
117 if(res != CURLE_OK)
118 fprintf(stderr, "curl_easy_perform() failed: %s\n",
119 curl_easy_strerror(res));
120
121 /* always cleanup */
122 curl_easy_cleanup(curl);
123 }
124 fclose(hd_src); /* close the local file */
125
126 curl_global_cleanup();
127 return 0;
128 }
129
