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curl

    1: /***************************************************************************
    2:  *                                  _   _ ____  _
    3:  *  Project                     ___| | | |  _ \| |
    4:  *                             / __| | | | |_) | |
    5:  *                            | (__| |_| |  _ <| |___
    6:  *                             \___|\___/|_| \_\_____|
    7:  *
    8:  * Copyright (C) 1998 - 2020, 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: /*
   23:  * Make sure libcurl does not send a `Content-Length: -1` header when HTTP POST
   24:  * size is unknown.
   25:  */
   26: 
   27: #include "test.h"
   28: 
   29: #include "memdebug.h"
   30: 
   31: static char data[]="dummy";
   32: 
   33: struct WriteThis {
   34:   char *readptr;
   35:   size_t sizeleft;
   36: };
   37: 
   38: static size_t read_callback(void *ptr, size_t size, size_t nmemb, void *userp)
   39: {
   40:   struct WriteThis *pooh = (struct WriteThis *)userp;
   41: 
   42:   if(size*nmemb < 1)
   43:     return 0;
   44: 
   45:   if(pooh->sizeleft) {
   46:     *(char *)ptr = pooh->readptr[0]; /* copy one single byte */
   47:     pooh->readptr++;                 /* advance pointer */
   48:     pooh->sizeleft--;                /* less data left */
   49:     return 1;                        /* we return 1 byte at a time! */
   50:   }
   51: 
   52:   return 0;                         /* no more data left to deliver */
   53: }
   54: 
   55: int test(char *URL)
   56: {
   57:   CURL *curl;
   58:   CURLcode result = CURLE_OK;
   59:   int res = 0;
   60:   struct WriteThis pooh = { data, sizeof(data)-1 };
   61: 
   62:   global_init(CURL_GLOBAL_ALL);
   63: 
   64:   easy_init(curl);
   65: 
   66:   easy_setopt(curl, CURLOPT_URL, URL);
   67:   easy_setopt(curl, CURLOPT_POST, 1L);
   68:   /* Purposely omit to set CURLOPT_POSTFIELDSIZE */
   69:   easy_setopt(curl, CURLOPT_READFUNCTION, read_callback);
   70:   easy_setopt(curl, CURLOPT_READDATA, &pooh);
   71: 
   72:   result = curl_easy_perform(curl);
   73: 
   74: test_cleanup:
   75: 
   76:   curl_easy_cleanup(curl);
   77:   curl_global_cleanup();
   78: 
   79:   return (int)result;
   80: }