/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) Daniel Stenberg, , et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at https://curl.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * * SPDX-License-Identifier: curl * ***************************************************************************/ /* * HTTP PUT with easy interface and read callback * */ #include #include #include #include /* * This example shows an HTTP PUT operation. PUTs a file given as a command * line argument to the URL also given on the command line. * * This example also uses its own read callback. * * Here's an article on how to setup a PUT handler for Apache: * http://www.apacheweek.com/features/put */ static size_t read_callback(char *ptr, size_t size, size_t nmemb, void *stream) { size_t retcode; unsigned long nread; /* in real-world cases, this would probably get this data differently as this fread() stuff is exactly what the library already would do by default internally */ retcode = fread(ptr, size, nmemb, stream); if(retcode > 0) { nread = (unsigned long)retcode; fprintf(stderr, "*** We read %lu bytes from file\n", nread); } return retcode; } int main(int argc, char **argv) { CURL *curl; CURLcode res; FILE * hd_src; struct stat file_info; char *file; char *url; if(argc < 3) return 1; file = argv[1]; url = argv[2]; /* get the file size of the local file */ stat(file, &file_info); /* get a FILE * of the same file, could also be made with fdopen() from the previous descriptor, but hey this is just an example! */ hd_src = fopen(file, "rb"); /* In windows, this inits the winsock stuff */ curl_global_init(CURL_GLOBAL_ALL); /* get a curl handle */ curl = curl_easy_init(); if(curl) { /* we want to use our own read function */ curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback); /* enable uploading (implies PUT over HTTP) */ curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L); /* specify target URL, and note that this URL should include a file name, not only a directory */ curl_easy_setopt(curl, CURLOPT_URL, url); /* now specify which file to upload */ curl_easy_setopt(curl, CURLOPT_READDATA, hd_src); /* provide the size of the upload, we typecast the value to curl_off_t since we must be sure to use the correct data size */ curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE, (curl_off_t)file_info.st_size); /* Now run off and do what you have been told! */ res = curl_easy_perform(curl); /* Check for errors */ if(res != CURLE_OK) fprintf(stderr, "curl_easy_perform() failed: %s\n", curl_easy_strerror(res)); /* always cleanup */ curl_easy_cleanup(curl); } fclose(hd_src); /* close the local file */ curl_global_cleanup(); return 0; }