examples: ftpuploadfrommem.c

#                            | (__| |_| |  _ <| |___

#                            | (__| |_| |  _ <| |___

#                             \___|\___/|_| \_\_____|

#                             \___|\___/|_| \_\_____|

#

#

# Copyright (C) 1998 - 2016, Daniel Stenberg, <daniel@haxx.se>, et al.

# Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.

#

#

# This software is licensed as described in the file COPYING, which

# This software is licensed as described in the file COPYING, which

# you should have received as part of this distribution. The terms

# you should have received as part of this distribution. The terms

  imap-list imap-lsub imap-fetch imap-store imap-append imap-examine       \

  imap-list imap-lsub imap-fetch imap-store imap-append imap-examine       \

  imap-search imap-create imap-delete imap-copy imap-noop imap-ssl         \

  imap-search imap-create imap-delete imap-copy imap-noop imap-ssl         \

  imap-tls imap-multi url2file sftpget ftpsget postinmemory http2-download \

  imap-tls imap-multi url2file sftpget ftpsget postinmemory http2-download \

  http2-upload http2-serverpush getredirect

  http2-upload http2-serverpush getredirect ftpuploadfrommem

# These examples require external dependencies that may not be commonly

# These examples require external dependencies that may not be commonly

# available on POSIX systems, so don't bother attempting to compile them here.

# available on POSIX systems, so don't bother attempting to compile them here.

/***************************************************************************

 *                                  _   _ ____  _

 *  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;

}