curl/tests/libtest/lib1485.c
Stefan Eissing 17af2bca58
http: write last header line late
- HEADERFUNCTIONS might inspect response properties like
  CURLINFO_CONTENT_LENGTH_DOWNLOAD_T on seeing the last header line. If
  the line is being written before this is initialized, values are not
  available.

- write the last header line late when analyzing a HTTP response so that
  all information is available at the time of the writing.

- add test1485 to verify that CURLINFO_CONTENT_LENGTH_DOWNLOAD_T works
  on seeing the last header.

Fixes #13752
Reported-by: Harry Sintonen
Closes #13757
2024-05-25 23:42:53 +02:00

121 lines
3.6 KiB
C

/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 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.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.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "test.h"
#include "testutil.h"
#include "warnless.h"
#include "memdebug.h"
struct transfer_status {
CURL *easy;
curl_off_t out_len;
size_t hd_line;
CURLcode result;
int http_status;
};
static size_t header_callback(void *ptr, size_t size, size_t nmemb,
void *userp)
{
struct transfer_status *st = (struct transfer_status *)userp;
const char *hd = ptr;
size_t len = size * nmemb;
CURLcode result;
(void)fwrite(ptr, size, nmemb, stdout);
++st->hd_line;
if(len == 2 && hd[0] == '\r' && hd[1] == '\n') {
curl_off_t clen;
long httpcode = 0;
/* end of a response */
result = curl_easy_getinfo(st->easy, CURLINFO_RESPONSE_CODE, &httpcode);
fprintf(stderr, "header_callback, get status: %ld, %d\n",
httpcode, result);
if(httpcode < 100 || httpcode >= 1000) {
fprintf(stderr, "header_callback, invalid status: %ld, %d\n",
httpcode, result);
return CURLE_WRITE_ERROR;
}
st->http_status = (int)httpcode;
if(st->http_status >= 200 && st->http_status < 300) {
result = curl_easy_getinfo(st->easy, CURLINFO_CONTENT_LENGTH_DOWNLOAD_T,
&clen);
fprintf(stderr, "header_callback, info Content-Length: %ld, %d\n",
(long)clen, result);
if(result) {
st->result = result;
return CURLE_WRITE_ERROR;
}
if(clen < 0) {
fprintf(stderr, "header_callback, expected known Content-Length, "
"got: %ld\n", (long)clen);
return CURLE_WRITE_ERROR;
}
}
}
return len;
}
static size_t write_callback(void *ptr, size_t size, size_t nmemb, void *userp)
{
struct transfer_status *st = (struct transfer_status *)userp;
size_t len = size * nmemb;
fwrite(ptr, size, nmemb, stdout);
st->out_len += (curl_off_t)len;
return len;
}
CURLcode test(char *URL)
{
CURL *curls = NULL;
CURLcode res = CURLE_OK;
struct transfer_status st;
start_test_timing();
memset(&st, 0, sizeof(st));
global_init(CURL_GLOBAL_ALL);
easy_init(curls);
st.easy = curls; /* to allow callbacks access */
easy_setopt(curls, CURLOPT_URL, URL);
easy_setopt(curls, CURLOPT_WRITEFUNCTION, write_callback);
easy_setopt(curls, CURLOPT_WRITEDATA, &st);
easy_setopt(curls, CURLOPT_HEADERFUNCTION, header_callback);
easy_setopt(curls, CURLOPT_HEADERDATA, &st);
easy_setopt(curls, CURLOPT_NOPROGRESS, 1L);
res = curl_easy_perform(curls);
test_cleanup:
curl_easy_cleanup(curls);
curl_global_cleanup();
return res; /* return the final return code */
}