mirror of
https://github.com/moparisthebest/curl
synced 2024-08-13 17:03:50 -04:00
3a6563d668
All plain C examples now (mostly) adhere to the curl code style. While they are only examples, they had diverted so much and contained all sorts of different mixed code styles by now. Having them use a unified style helps users and readability. Also, as they get copy-and-pasted widely by users, making sure they're clean and nice is a good idea. 573 checksrc warnings were addressed.
140 lines
4.5 KiB
C
140 lines
4.5 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <curl/curl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <errno.h>
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#ifdef WIN32
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#include <io.h>
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#else
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#include <unistd.h>
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#endif
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/* <DESC>
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* Performs an FTP upload and renames the file just after a successful
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* transfer.
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* </DESC>
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*/
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#define LOCAL_FILE "/tmp/uploadthis.txt"
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#define UPLOAD_FILE_AS "while-uploading.txt"
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#define REMOTE_URL "ftp://example.com/" UPLOAD_FILE_AS
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#define RENAME_FILE_TO "renamed-and-fine.txt"
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/* NOTE: if you want this example to work on Windows with libcurl as a
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DLL, you MUST also provide a read callback with CURLOPT_READFUNCTION.
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Failing to do so will give you a crash since a DLL may not use the
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variable's memory when passed in to it from an app like this. */
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static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
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{
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curl_off_t nread;
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/* in real-world cases, this would probably get this data differently
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as this fread() stuff is exactly what the library already would do
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by default internally */
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size_t retcode = fread(ptr, size, nmemb, stream);
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nread = (curl_off_t)retcode;
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fprintf(stderr, "*** We read %" CURL_FORMAT_CURL_OFF_T
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" bytes from file\n", nread);
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return retcode;
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}
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int main(void)
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{
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CURL *curl;
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CURLcode res;
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FILE *hd_src;
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struct stat file_info;
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curl_off_t fsize;
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struct curl_slist *headerlist=NULL;
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static const char buf_1 [] = "RNFR " UPLOAD_FILE_AS;
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static const char buf_2 [] = "RNTO " RENAME_FILE_TO;
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/* get the file size of the local file */
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if(stat(LOCAL_FILE, &file_info)) {
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printf("Couldnt open '%s': %s\n", LOCAL_FILE, strerror(errno));
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return 1;
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}
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fsize = (curl_off_t)file_info.st_size;
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printf("Local file size: %" CURL_FORMAT_CURL_OFF_T " bytes.\n", fsize);
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/* get a FILE * of the same file */
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hd_src = fopen(LOCAL_FILE, "rb");
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/* In windows, this will init the winsock stuff */
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curl_global_init(CURL_GLOBAL_ALL);
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/* get a curl handle */
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curl = curl_easy_init();
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if(curl) {
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/* build a list of commands to pass to libcurl */
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headerlist = curl_slist_append(headerlist, buf_1);
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headerlist = curl_slist_append(headerlist, buf_2);
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/* we want to use our own read function */
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curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
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/* enable uploading */
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curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
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/* specify target */
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curl_easy_setopt(curl, CURLOPT_URL, REMOTE_URL);
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/* pass in that last of FTP commands to run after the transfer */
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curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);
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/* now specify which file to upload */
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curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
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/* Set the size of the file to upload (optional). If you give a *_LARGE
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option you MUST make sure that the type of the passed-in argument is a
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curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
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make sure that to pass in a type 'long' argument. */
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curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
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(curl_off_t)fsize);
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/* Now run off and do what you've been told! */
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res = curl_easy_perform(curl);
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/* Check for errors */
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if(res != CURLE_OK)
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fprintf(stderr, "curl_easy_perform() failed: %s\n",
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curl_easy_strerror(res));
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/* clean up the FTP commands list */
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curl_slist_free_all (headerlist);
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/* always cleanup */
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curl_easy_cleanup(curl);
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}
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fclose(hd_src); /* close the local file */
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curl_global_cleanup();
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return 0;
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}
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