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      1 /***************************************************************************
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      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel (at) 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 }
    125