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+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, 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.haxx.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.
+ *
+ ***************************************************************************/
+/* <DESC>
+ * FTP upload a file from memory
+ * </DESC>
+ */
+#include <stdio.h>
+#include <string.h>
+#include <curl/curl.h>
+
+const char data[]=
+ "Lorem ipsum dolor sit amet, consectetur adipiscing elit. "
+ "Nam rhoncus odio id venenatis volutpat. Vestibulum dapibus "
+ "bibendum ullamcorper. Maecenas finibus elit augue, vel "
+ "condimentum odio maximus nec. In hac habitasse platea dictumst. "
+ "Vestibulum vel dolor et turpis rutrum finibus ac at nulla. "
+ "Vivamus nec neque ac elit blandit pretium vitae maximus ipsum. "
+ "Quisque sodales magna vel erat auctor, sed pellentesque nisi "
+ "rhoncus. Donec vehicula maximus pretium. Aliquam eu tincidunt "
+ "lorem. Ut placerat, sem eu pharetra mattis, ante lacus fringilla "
+ "diam, a consequat quam eros eget erat.";
+
+struct WriteThis {
+ const char *readptr;
+ size_t sizeleft;
+};
+
+static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp)
+{
+ struct WriteThis *upload = (struct WriteThis *)userp;
+ size_t max = size*nmemb;
+
+ if(max < 1)
+ return 0;
+
+ if(upload->sizeleft) {
+ size_t copylen = max;
+ if(copylen > upload->sizeleft)
+ copylen = upload->sizeleft;
+ memcpy(ptr, upload->readptr, copylen);
+ upload->readptr += copylen;
+ upload->sizeleft -= copylen;
+ return copylen;
+ }
+
+ return 0; /* no more data left to deliver */
+}
+
+int main(void)
+{
+ CURL *curl;
+ CURLcode res;
+
+ struct WriteThis upload;
+
+ upload.readptr = data;
+ upload.sizeleft = strlen(data);
+
+ /* In windows, this will init the winsock stuff */
+ res = curl_global_init(CURL_GLOBAL_DEFAULT);
+ /* Check for errors */
+ if(res != CURLE_OK) {
+ fprintf(stderr, "curl_global_init() failed: %s\n",
+ curl_easy_strerror(res));
+ return 1;
+ }
+
+ /* get a curl handle */
+ curl = curl_easy_init();
+ if(curl) {
+ /* First set the URL, the target file */
+ curl_easy_setopt(curl, CURLOPT_URL, "ftp://example.com/path/to/upload/file");
+
+ /* User and password for the FTP login */
+ curl_easy_setopt(curl, CURLOPT_USERPWD, "login:secret");
+
+ /* Now specify we want to UPLOAD data */
+ curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
+
+ /* we want to use our own read function */
+ curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
+
+ /* pointer to pass to our read function */
+ curl_easy_setopt(curl, CURLOPT_READDATA, &upload);
+
+ /* get verbose debug output please */
+ curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+
+ /* Set the expected upload size. */
+ curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
+ (curl_off_t)upload.sizeleft);
+
+ /* Perform the request, res will get the return code */
+ 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);
+ }
+ curl_global_cleanup();
+ return 0;
+}