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 43static 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 61int 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 will init 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