ftpupload.c
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上传日期:2018-10-23
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- /*****************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ | |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * ___|___/|_| ______|
- *
- * $Id: ftpupload.c,v 1.15 2008-05-22 21:20:09 danf Exp $
- */
- #include <stdio.h>
- #include <string.h>
- #include <curl/curl.h>
- #include <sys/types.h>
- #include <sys/stat.h>
- #include <fcntl.h>
- #include <errno.h>
- #ifdef WIN32
- #include <io.h>
- #else
- #include <unistd.h>
- #endif
- /*
- * This example shows an FTP upload, with a rename of the file just after
- * a successful upload.
- *
- * Example based on source code provided by Erick Nuwendam. Thanks!
- */
- #define LOCAL_FILE "/tmp/uploadthis.txt"
- #define UPLOAD_FILE_AS "while-uploading.txt"
- #define REMOTE_URL "ftp://localhost/" UPLOAD_FILE_AS
- #define RENAME_FILE_TO "renamed-and-fine.txt"
- /* NOTE: if you want this example to work on Windows with libcurl as a
- DLL, you MUST also provide a read callback with CURLOPT_READFUNCTION.
- Failing to do so will give you a crash since a DLL may not use the
- variable's memory when passed in to it from an app like this. */
- static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
- {
- /* 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 */
- size_t retcode = fread(ptr, size, nmemb, stream);
- fprintf(stderr, "*** We read %d bytes from filen", retcode);
- return retcode;
- }
- int main(int argc, char **argv)
- {
- CURL *curl;
- CURLcode res;
- FILE *hd_src;
- struct stat file_info;
- struct curl_slist *headerlist=NULL;
- static const char buf_1 [] = "RNFR " UPLOAD_FILE_AS;
- static const char buf_2 [] = "RNTO " RENAME_FILE_TO;
- /* get the file size of the local file */
- if(stat(LOCAL_FILE, &file_info)) {
- printf("Couldnt open '%s': %sn", LOCAL_FILE, strerror(errno));
- return 1;
- }
- printf("Local file size: %ld bytes.n", file_info.st_size);
- /* get a FILE * of the same file */
- hd_src = fopen(LOCAL_FILE, "rb");
- /* In windows, this will init the winsock stuff */
- curl_global_init(CURL_GLOBAL_ALL);
- /* get a curl handle */
- curl = curl_easy_init();
- if(curl) {
- /* build a list of commands to pass to libcurl */
- headerlist = curl_slist_append(headerlist, buf_1);
- headerlist = curl_slist_append(headerlist, buf_2);
- /* we want to use our own read function */
- curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
- /* enable uploading */
- curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
- /* specify target */
- curl_easy_setopt(curl,CURLOPT_URL, REMOTE_URL);
- /* pass in that last of FTP commands to run after the transfer */
- curl_easy_setopt(curl, CURLOPT_POSTQUOTE, headerlist);
- /* now specify which file to upload */
- curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
- /* Set the size of the file to upload (optional). If you give a *_LARGE
- option you MUST make sure that the type of the passed-in argument is a
- curl_off_t. If you use CURLOPT_INFILESIZE (without _LARGE) you must
- make sure that to pass in a type 'long' argument. */
- curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
- (curl_off_t)file_info.st_size);
- /* Now run off and do what you've been told! */
- res = curl_easy_perform(curl);
- /* clean up the FTP commands list */
- curl_slist_free_all (headerlist);
- /* always cleanup */
- curl_easy_cleanup(curl);
- }
- fclose(hd_src); /* close the local file */
- curl_global_cleanup();
- return 0;
- }