curl-curl/tests/libtest/lib1960.c
Viktor Szakats bf7375ecc5
build: avoid overriding system symbols for socket functions
Before this patch `accept4()`, `socket()`, `socketpair()`, `send()` and
`recv()` system symbols were remapped via macros, using the same name,
to local curl debug wrappers. This patch replaces these overrides by
introducing curl-namespaced macros that map either to the system symbols
or to their curl debug wrappers in `CURLDEBUG` (TrackMemory) builds.

This follows a patch that implemented the same for `accept()`.

The old method required tricks to make these redefines work in unity
builds, and avoid them interfering with system headers. These tricks
did not work for system symbols implemented as macros.

The new method allows to setup these mappings once, without interfering
with system headers, upstream macros, or unity builds. It makes builds
more robust.

Also:
- checksrc: ban all mapped functions.
- docs/examples: tidy up checksrc rules.

Follow-up to 9863599d69 #18502
Follow-up to 3bb5e58c10 #17827

Closes #18503
2025-09-20 13:44:59 +02:00

154 lines
4.2 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"
#ifdef HAVE_INET_PTON
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#include "memdebug.h"
/* to prevent libcurl from closing our socket */
static int closesocket_cb(void *clientp, curl_socket_t item)
{
(void)clientp;
(void)item;
return 0;
}
/* provide our own socket */
static curl_socket_t socket_cb(void *clientp,
curlsocktype purpose,
struct curl_sockaddr *address)
{
int s = *(int *)clientp;
(void)purpose;
(void)address;
return (curl_socket_t)s;
}
/* tell libcurl the socket is connected */
static int sockopt_cb(void *clientp,
curl_socket_t curlfd,
curlsocktype purpose)
{
(void)clientp;
(void)curlfd;
(void)purpose;
return CURL_SOCKOPT_ALREADY_CONNECTED;
}
#ifdef __AMIGA__
#define my_inet_pton(x,y,z) inet_pton(x,(unsigned char *)y,z)
#else
#define my_inet_pton(x,y,z) inet_pton(x,y,z)
#endif
/* Expected args: URL IP PORT */
static CURLcode test_lib1960(const char *URL)
{
CURL *curl = NULL;
CURLcode res = TEST_ERR_MAJOR_BAD;
int status;
curl_socket_t client_fd = CURL_SOCKET_BAD;
struct sockaddr_in serv_addr;
unsigned short port;
if(!strcmp("check", URL))
return CURLE_OK; /* no output makes it not skipped */
port = (unsigned short)atoi(libtest_arg3);
if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
curl_mfprintf(stderr, "curl_global_init() failed\n");
return TEST_ERR_MAJOR_BAD;
}
/*
* This code connects to the TCP port "manually" so that we then can hand
* over this socket as "already connected" to libcurl and make sure that
* this works.
*/
client_fd = CURL_SOCKET(AF_INET, SOCK_STREAM, 0);
if(client_fd == CURL_SOCKET_BAD) {
curl_mfprintf(stderr, "socket creation error\n");
goto test_cleanup;
}
serv_addr.sin_family = AF_INET;
serv_addr.sin_port = htons(port);
if(my_inet_pton(AF_INET, libtest_arg2, &serv_addr.sin_addr) <= 0) {
curl_mfprintf(stderr, "inet_pton failed\n");
goto test_cleanup;
}
status = connect(client_fd, (struct sockaddr*)&serv_addr, sizeof(serv_addr));
if(status < 0) {
curl_mfprintf(stderr, "connection failed\n");
goto test_cleanup;
}
curl = curl_easy_init();
if(!curl) {
curl_mfprintf(stderr, "curl_easy_init() failed\n");
goto test_cleanup;
}
test_setopt(curl, CURLOPT_VERBOSE, 1L);
test_setopt(curl, CURLOPT_OPENSOCKETFUNCTION, socket_cb);
test_setopt(curl, CURLOPT_OPENSOCKETDATA, &client_fd);
test_setopt(curl, CURLOPT_SOCKOPTFUNCTION, sockopt_cb);
test_setopt(curl, CURLOPT_SOCKOPTDATA, NULL);
test_setopt(curl, CURLOPT_CLOSESOCKETFUNCTION, closesocket_cb);
test_setopt(curl, CURLOPT_CLOSESOCKETDATA, NULL);
test_setopt(curl, CURLOPT_VERBOSE, 1L);
test_setopt(curl, CURLOPT_HEADER, 1L);
test_setopt(curl, CURLOPT_URL, URL);
res = curl_easy_perform(curl);
test_cleanup:
curl_easy_cleanup(curl);
if(client_fd != CURL_SOCKET_BAD)
sclose(client_fd);
curl_global_cleanup();
return res;
}
#else
static CURLcode test_lib1960(const char *URL)
{
(void)URL;
curl_mprintf("lacks inet_pton\n");
return CURLE_OK;
}
#endif