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    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
    9:  *
   10:  * This software is licensed as described in the file COPYING, which
   11:  * you should have received as part of this distribution. The terms
   12:  * are also available at https://curl.haxx.se/docs/copyright.html.
   13:  *
   14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   15:  * copies of the Software, and permit persons to whom the Software is
   16:  * furnished to do so, under the terms of the COPYING file.
   17:  *
   18:  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   19:  * KIND, either express or implied.
   20:  *
   21:  ***************************************************************************/
   22: /* <DESC>
   23:  * HTTP PUT with easy interface and read callback
   24:  * </DESC>
   25:  */
   26: #include <stdio.h>
   27: #include <fcntl.h>
   28: #include <sys/stat.h>
   29: #include <curl/curl.h>
   30: 
   31: /*
   32:  * This example shows a HTTP PUT operation. PUTs a file given as a command
   33:  * line argument to the URL also given on the command line.
   34:  *
   35:  * This example also uses its own read callback.
   36:  *
   37:  * Here's an article on how to setup a PUT handler for Apache:
   38:  * http://www.apacheweek.com/features/put
   39:  */
   40: 
   41: static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *stream)
   42: {
   43:   size_t retcode;
   44:   curl_off_t nread;
   45: 
   46:   /* in real-world cases, this would probably get this data differently
   47:      as this fread() stuff is exactly what the library already would do
   48:      by default internally */
   49:   retcode = fread(ptr, size, nmemb, stream);
   50: 
   51:   nread = (curl_off_t)retcode;
   52: 
   53:   fprintf(stderr, "*** We read %" CURL_FORMAT_CURL_OFF_T
   54:           " bytes from file\n", nread);
   55: 
   56:   return retcode;
   57: }
   58: 
   59: int main(int argc, char **argv)
   60: {
   61:   CURL *curl;
   62:   CURLcode res;
   63:   FILE * hd_src;
   64:   struct stat file_info;
   65: 
   66:   char *file;
   67:   char *url;
   68: 
   69:   if(argc < 3)
   70:     return 1;
   71: 
   72:   file = argv[1];
   73:   url = argv[2];
   74: 
   75:   /* get the file size of the local file */
   76:   stat(file, &file_info);
   77: 
   78:   /* get a FILE * of the same file, could also be made with
   79:      fdopen() from the previous descriptor, but hey this is just
   80:      an example! */
   81:   hd_src = fopen(file, "rb");
   82: 
   83:   /* In windows, this will init the winsock stuff */
   84:   curl_global_init(CURL_GLOBAL_ALL);
   85: 
   86:   /* get a curl handle */
   87:   curl = curl_easy_init();
   88:   if(curl) {
   89:     /* we want to use our own read function */
   90:     curl_easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
   91: 
   92:     /* enable uploading */
   93:     curl_easy_setopt(curl, CURLOPT_UPLOAD, 1L);
   94: 
   95:     /* HTTP PUT please */
   96:     curl_easy_setopt(curl, CURLOPT_PUT, 1L);
   97: 
   98:     /* specify target URL, and note that this URL should include a file
   99:        name, not only a directory */
  100:     curl_easy_setopt(curl, CURLOPT_URL, url);
  101: 
  102:     /* now specify which file to upload */
  103:     curl_easy_setopt(curl, CURLOPT_READDATA, hd_src);
  104: 
  105:     /* provide the size of the upload, we specicially typecast the value
  106:        to curl_off_t since we must be sure to use the correct data size */
  107:     curl_easy_setopt(curl, CURLOPT_INFILESIZE_LARGE,
  108:                      (curl_off_t)file_info.st_size);
  109: 
  110:     /* Now run off and do what you've been told! */
  111:     res = curl_easy_perform(curl);
  112:     /* Check for errors */
  113:     if(res != CURLE_OK)
  114:       fprintf(stderr, "curl_easy_perform() failed: %s\n",
  115:               curl_easy_strerror(res));
  116: 
  117:     /* always cleanup */
  118:     curl_easy_cleanup(curl);
  119:   }
  120:   fclose(hd_src); /* close the local file */
  121: 
  122:   curl_global_cleanup();
  123:   return 0;
  124: }