httpput.c (3772B)
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 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 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 if(!hd_src) 90 return 2; 91 92 /* In Windows, this inits the Winsock stuff */ 93 curl_global_init(CURL_GLOBAL_ALL); 94 95 /* get a curl handle */ 96 curl = curl_easy_init(); 97 if(curl) { 98 /* we want to use our own read function */ 99 curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback); 100 101 /* enable uploading (implies PUT over HTTP) */ 102 curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L); 103 104 /* specify target URL, and note that this URL should include a file 105 name, not only a directory */ 106 curl_easy_setopt(curl, CURLOPT_URL, url); 107 108 /* now specify which file to upload */ 109 curl_easy_setopt(curl, CURLOPT_READDATA, hd_src); 110 111 /* provide the size of the upload, we typecast the value to curl_off_t 112 since we must be sure to use the correct data size */ 113 curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, 114 (curl_off_t)file_info.st_size); 115 116 /* Now run off and do what you have been told! */ 117 res = curl_easy_perform(curl); 118 /* Check for errors */ 119 if(res != CURLE_OK) 120 fprintf(stderr, "curl_easy_perform() failed: %s\n", 121 curl_easy_strerror(res)); 122 123 /* always cleanup */ 124 curl_easy_cleanup(curl); 125 } 126 fclose(hd_src); /* close the local file */ 127 128 curl_global_cleanup(); 129 return 0; 130 }