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Annotation of embedaddon/curl/docs/examples/httpput.c, revision 1.1.1.1

1.1       misho       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: }