mirror of
https://github.com/moparisthebest/curl
synced 2024-12-24 00:58:48 -05:00
b4beb3b115
in ftpget, ftpsget and sftpget, so that scan-build stops warning for potential NULL pointer dereference below! Detected by scan-build
100 lines
2.9 KiB
C
100 lines
2.9 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 - 2019, 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 <curl/curl.h>
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/* <DESC>
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* Get a single file from an FTPS server.
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* </DESC>
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*/
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struct FtpFile {
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const char *filename;
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FILE *stream;
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};
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static size_t my_fwrite(void *buffer, size_t size, size_t nmemb,
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void *stream)
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{
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struct FtpFile *out = (struct FtpFile *)stream;
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if(!out->stream) {
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/* open file for writing */
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out->stream = fopen(out->filename, "wb");
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if(!out->stream)
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return -1; /* failure, can't open file to write */
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}
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return fwrite(buffer, size, nmemb, out->stream);
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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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struct FtpFile ftpfile = {
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"yourfile.bin", /* name to store the file as if successful */
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NULL
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};
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curl_global_init(CURL_GLOBAL_DEFAULT);
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curl = curl_easy_init();
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if(curl) {
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/*
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* You better replace the URL with one that works! Note that we use an
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* FTP:// URL with standard explicit FTPS. You can also do FTPS:// URLs if
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* you want to do the rarer kind of transfers: implicit.
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*/
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curl_easy_setopt(curl, CURLOPT_URL,
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"ftp://user@server/home/user/file.txt");
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/* Define our callback to get called when there's data to be written */
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curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, my_fwrite);
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/* Set a pointer to our struct to pass to the callback */
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curl_easy_setopt(curl, CURLOPT_WRITEDATA, &ftpfile);
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/* We activate SSL and we require it for both control and data */
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curl_easy_setopt(curl, CURLOPT_USE_SSL, CURLUSESSL_ALL);
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/* Switch on full protocol/debug output */
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curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
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res = curl_easy_perform(curl);
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/* always cleanup */
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curl_easy_cleanup(curl);
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if(CURLE_OK != res) {
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/* we failed */
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fprintf(stderr, "curl told us %d\n", res);
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}
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}
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if(ftpfile.stream)
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fclose(ftpfile.stream); /* 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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