curl/tests/libtest/lib579.c
Viktor Szakats 193cb00ce9
build: stop overriding standard memory allocation functions
Before this patch curl used the C preprocessor to override standard
memory allocation symbols: malloc, calloc, strdup, realloc, free.
The goal of these is to replace them with curl's debug wrappers in
`CURLDEBUG` builds, another was to replace them with the wrappers
calling user-defined allocators in libcurl. This solution needed a bunch
of workarounds to avoid breaking external headers: it relied on include
order to do the overriding last. For "unity" builds it needed to reset
overrides before external includes. Also in test apps, which are always
built as single source files. It also needed the `(symbol)` trick
to avoid overrides in some places. This would still not fix cases where
the standard symbols were macros. It was also fragile and difficult
to figure out which was the actual function behind an alloc or free call
in a specific piece of code. This in turn caused bugs where the wrong
allocator was accidentally called.

To avoid these problems, this patch replaces this solution with
`curlx_`-prefixed allocator macros, and mapping them _once_ to either
the libcurl wrappers, the debug wrappers or the standard ones, matching
the rest of the code in libtests.

This concludes the long journey to avoid redefining standard functions
in the curl codebase.

Note: I did not update `packages/OS400/*.c` sources. They did not
`#include` `curl_setup.h`, `curl_memory.h` or `memdebug.h`, meaning
the overrides were never applied to them. This may or may not have been
correct. For now I suppressed the direct use of standard allocators
via a local `.checksrc`. Probably they (except for `curlcl.c`) should be
updated to include `curl_setup.h` and use the `curlx_` macros.

This patch changes mappings in two places:
- `lib/curl_threads.c` in libtests: Before this patch it mapped to
  libcurl allocators. After, it maps to standard allocators, like
  the rest of libtests code.
- `units`: before this patch it mapped to standard allocators. After, it
  maps to libcurl allocators.

Also:
- drop all position-dependent `curl_memory.h` and `memdebug.h` includes,
  and delete the now unnecessary headers.
- rename `Curl_tcsdup` macro to `curlx_tcsdup` and define like the other
  allocators.
- map `curlx_strdup()` to `_strdup()` on Windows (was: `strdup()`).
  To fix warnings silenced via `_CRT_NONSTDC_NO_DEPRECATE`.
- multibyte: map `curlx_convert_*()` to `_strdup()` on Windows
  (was: `strdup()`).
- src: do not reuse the `strdup` name for the local replacement.
- lib509: call `_strdup()` on Windows (was: `strdup()`).
- test1132: delete test obsoleted by this patch.
- CHECKSRC.md: update text for `SNPRINTF`.
- checksrc: ban standard allocator symbols.

Follow-up to b12da22db1 #18866
Follow-up to db98daab05 #18844
Follow-up to 4deea9396b #18814
Follow-up to 9678ff5b1b #18776
Follow-up to 10bac43b87 #18774
Follow-up to 20142f5d06 #18634
Follow-up to bf7375ecc5 #18503
Follow-up to 9863599d69 #18502
Follow-up to 3bb5e58c10 #17827

Closes #19626
2025-11-28 10:44:26 +01:00

173 lines
4.6 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 "first.h"
struct t579_WriteThis {
int counter;
};
static bool started = FALSE;
static size_t last_ul = 0;
static size_t last_ul_total = 0;
static void progress_final_report(void)
{
FILE *moo = curlx_fopen(libtest_arg2, "ab");
curl_mfprintf(moo ? moo : stderr, "Progress: end UL %zu/%zu\n",
last_ul, last_ul_total);
if(moo)
curlx_fclose(moo);
else
curl_mfprintf(stderr, "Progress: end UL, cannot open %s\n", libtest_arg2);
started = FALSE;
}
static int t579_progress_callback(void *clientp, double dltotal, double dlnow,
double ultotal, double ulnow)
{
(void)clientp;
(void)dltotal;
(void)dlnow;
if(started && ulnow <= 0.0 && last_ul) {
progress_final_report();
}
last_ul = (size_t)ulnow;
last_ul_total = (size_t)ultotal;
if(!started) {
FILE *moo = curlx_fopen(libtest_arg2, "ab");
curl_mfprintf(moo ? moo : stderr, "Progress: start UL %zu/%zu\n",
last_ul, last_ul_total);
if(moo)
curlx_fclose(moo);
else
curl_mfprintf(stderr, "Progress: start UL, cannot open %s\n",
libtest_arg2);
started = TRUE;
}
return 0;
}
static size_t t579_read_cb(char *ptr, size_t size, size_t nmemb, void *userp)
{
static const char * const testpost[] = {
"one",
"two",
"three",
"and a final longer crap: four",
NULL
};
struct t579_WriteThis *pooh = (struct t579_WriteThis *)userp;
const char *data;
if(size*nmemb < 1)
return 0;
data = testpost[pooh->counter];
if(data) {
size_t len = strlen(data);
memcpy(ptr, data, len);
pooh->counter++; /* advance pointer */
return len;
}
return 0; /* no more data left to deliver */
}
static CURLcode test_lib579(const char *URL)
{
CURL *curl;
CURLcode res = CURLE_OK;
struct curl_slist *slist = NULL;
struct t579_WriteThis pooh;
pooh.counter = 0;
if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
curl_mfprintf(stderr, "curl_global_init() failed\n");
return TEST_ERR_MAJOR_BAD;
}
curl = curl_easy_init();
if(!curl) {
curl_mfprintf(stderr, "curl_easy_init() failed\n");
curl_global_cleanup();
return TEST_ERR_MAJOR_BAD;
}
slist = curl_slist_append(slist, "Transfer-Encoding: chunked");
if(!slist) {
curl_mfprintf(stderr, "curl_slist_append() failed\n");
curl_easy_cleanup(curl);
curl_global_cleanup();
return TEST_ERR_MAJOR_BAD;
}
/* First set the URL that is about to receive our POST. */
test_setopt(curl, CURLOPT_URL, URL);
/* Now specify we want to POST data */
test_setopt(curl, CURLOPT_POST, 1L);
/* we want to use our own read function */
test_setopt(curl, CURLOPT_READFUNCTION, t579_read_cb);
/* pointer to pass to our read function */
test_setopt(curl, CURLOPT_READDATA, &pooh);
/* get verbose debug output please */
test_setopt(curl, CURLOPT_VERBOSE, 1L);
/* include headers in the output */
test_setopt(curl, CURLOPT_HEADER, 1L);
/* enforce chunked transfer by setting the header */
test_setopt(curl, CURLOPT_HTTPHEADER, slist);
test_setopt(curl, CURLOPT_HTTPAUTH, CURLAUTH_DIGEST);
test_setopt(curl, CURLOPT_USERPWD, "foo:bar");
/* we want to use our own progress function */
test_setopt(curl, CURLOPT_NOPROGRESS, 0L);
test_setopt(curl, CURLOPT_PROGRESSFUNCTION, t579_progress_callback);
/* Perform the request, res will get the return code */
res = curl_easy_perform(curl);
progress_final_report();
test_cleanup:
/* clean up the headers list */
if(slist)
curl_slist_free_all(slist);
/* always cleanup */
curl_easy_cleanup(curl);
curl_global_cleanup();
return res;
}