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openssl/test/asynctest.c
Tianjia Zhang c5d061290b test: Fix memory leak of asynctest 
ASYNC_init_thread() will be called automatically by ASYNC_start_job(),
so ASYNC_cleanup_thread() must be called at last, otherwise it will
cause memory leak.

Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com>

Reviewed-by: Paul Dale <pauli@openssl.org>
Reviewed-by: David von Oheimb <david.von.oheimb@siemens.com>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16703)
2022-09-23 14:30:09 +01:00

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/*
* Copyright 2015-2022 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#ifdef _WIN32
# include <windows.h>
#endif
#include <stdio.h>
#include <string.h>
#include <openssl/async.h>
#include <openssl/crypto.h>
static int ctr = 0;
static ASYNC_JOB *currjob = NULL;
static int custom_alloc_used = 0;
static int custom_free_used = 0;
static int only_pause(void *args)
{
ASYNC_pause_job();
return 1;
}
static int add_two(void *args)
{
ctr++;
ASYNC_pause_job();
ctr++;
return 2;
}
static int save_current(void *args)
{
currjob = ASYNC_get_current_job();
ASYNC_pause_job();
return 1;
}
static int change_deflt_libctx(void *args)
{
OSSL_LIB_CTX *libctx = OSSL_LIB_CTX_new();
OSSL_LIB_CTX *oldctx, *tmpctx;
int ret = 0;
if (libctx == NULL)
return 0;
oldctx = OSSL_LIB_CTX_set0_default(libctx);
ASYNC_pause_job();
/* Check the libctx is set up as we expect */
tmpctx = OSSL_LIB_CTX_set0_default(oldctx);
if (tmpctx != libctx)
goto err;
/* Set it back again to continue to use our own libctx */
oldctx = OSSL_LIB_CTX_set0_default(libctx);
ASYNC_pause_job();
/* Check the libctx is set up as we expect */
tmpctx = OSSL_LIB_CTX_set0_default(oldctx);
if (tmpctx != libctx)
goto err;
ret = 1;
err:
OSSL_LIB_CTX_free(libctx);
return ret;
}
#define MAGIC_WAIT_FD ((OSSL_ASYNC_FD)99)
static int waitfd(void *args)
{
ASYNC_JOB *job;
ASYNC_WAIT_CTX *waitctx;
job = ASYNC_get_current_job();
if (job == NULL)
return 0;
waitctx = ASYNC_get_wait_ctx(job);
if (waitctx == NULL)
return 0;
/* First case: no fd added or removed */
ASYNC_pause_job();
/* Second case: one fd added */
if (!ASYNC_WAIT_CTX_set_wait_fd(waitctx, waitctx, MAGIC_WAIT_FD, NULL, NULL))
return 0;
ASYNC_pause_job();
/* Third case: all fd removed */
if (!ASYNC_WAIT_CTX_clear_fd(waitctx, waitctx))
return 0;
ASYNC_pause_job();
/* Last case: fd added and immediately removed */
if (!ASYNC_WAIT_CTX_set_wait_fd(waitctx, waitctx, MAGIC_WAIT_FD, NULL, NULL))
return 0;
if (!ASYNC_WAIT_CTX_clear_fd(waitctx, waitctx))
return 0;
return 1;
}
static int blockpause(void *args)
{
ASYNC_block_pause();
ASYNC_pause_job();
ASYNC_unblock_pause();
ASYNC_pause_job();
return 1;
}
static int test_ASYNC_init_thread(void)
{
ASYNC_JOB *job1 = NULL, *job2 = NULL, *job3 = NULL;
int funcret1, funcret2, funcret3;
ASYNC_WAIT_CTX *waitctx = NULL;
if ( !ASYNC_init_thread(2, 0)
|| (waitctx = ASYNC_WAIT_CTX_new()) == NULL
|| ASYNC_start_job(&job1, waitctx, &funcret1, only_pause, NULL, 0)
!= ASYNC_PAUSE
|| ASYNC_start_job(&job2, waitctx, &funcret2, only_pause, NULL, 0)
!= ASYNC_PAUSE
|| ASYNC_start_job(&job3, waitctx, &funcret3, only_pause, NULL, 0)
!= ASYNC_NO_JOBS
|| ASYNC_start_job(&job1, waitctx, &funcret1, only_pause, NULL, 0)
!= ASYNC_FINISH
|| ASYNC_start_job(&job3, waitctx, &funcret3, only_pause, NULL, 0)
!= ASYNC_PAUSE
|| ASYNC_start_job(&job2, waitctx, &funcret2, only_pause, NULL, 0)
!= ASYNC_FINISH
|| ASYNC_start_job(&job3, waitctx, &funcret3, only_pause, NULL, 0)
!= ASYNC_FINISH
|| funcret1 != 1
|| funcret2 != 1
|| funcret3 != 1) {
fprintf(stderr, "test_ASYNC_init_thread() failed\n");
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 0;
}
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 1;
}
static int test_callback(void *arg)
{
printf("callback test pass\n");
return 1;
}
static int test_ASYNC_callback_status(void)
{
ASYNC_WAIT_CTX *waitctx = NULL;
int set_arg = 100;
ASYNC_callback_fn get_callback;
void *get_arg;
int set_status = 1;
if ( !ASYNC_init_thread(1, 0)
|| (waitctx = ASYNC_WAIT_CTX_new()) == NULL
|| ASYNC_WAIT_CTX_set_callback(waitctx, test_callback, (void*)&set_arg)
!= 1
|| ASYNC_WAIT_CTX_get_callback(waitctx, &get_callback, &get_arg)
!= 1
|| test_callback != get_callback
|| get_arg != (void*)&set_arg
|| (*get_callback)(get_arg) != 1
|| ASYNC_WAIT_CTX_set_status(waitctx, set_status) != 1
|| set_status != ASYNC_WAIT_CTX_get_status(waitctx)) {
fprintf(stderr, "test_ASYNC_callback_status() failed\n");
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 0;
}
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 1;
}
static int test_ASYNC_start_job(void)
{
ASYNC_JOB *job = NULL;
int funcret;
ASYNC_WAIT_CTX *waitctx = NULL;
ctr = 0;
if ( !ASYNC_init_thread(1, 0)
|| (waitctx = ASYNC_WAIT_CTX_new()) == NULL
|| ASYNC_start_job(&job, waitctx, &funcret, add_two, NULL, 0)
!= ASYNC_PAUSE
|| ctr != 1
|| ASYNC_start_job(&job, waitctx, &funcret, add_two, NULL, 0)
!= ASYNC_FINISH
|| ctr != 2
|| funcret != 2) {
fprintf(stderr, "test_ASYNC_start_job() failed\n");
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 0;
}
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 1;
}
static int test_ASYNC_get_current_job(void)
{
ASYNC_JOB *job = NULL;
int funcret;
ASYNC_WAIT_CTX *waitctx = NULL;
currjob = NULL;
if ( !ASYNC_init_thread(1, 0)
|| (waitctx = ASYNC_WAIT_CTX_new()) == NULL
|| ASYNC_start_job(&job, waitctx, &funcret, save_current, NULL, 0)
!= ASYNC_PAUSE
|| currjob != job
|| ASYNC_start_job(&job, waitctx, &funcret, save_current, NULL, 0)
!= ASYNC_FINISH
|| funcret != 1) {
fprintf(stderr, "test_ASYNC_get_current_job() failed\n");
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 0;
}
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 1;
}
static int test_ASYNC_WAIT_CTX_get_all_fds(void)
{
ASYNC_JOB *job = NULL;
int funcret;
ASYNC_WAIT_CTX *waitctx = NULL;
OSSL_ASYNC_FD fd = OSSL_BAD_ASYNC_FD, delfd = OSSL_BAD_ASYNC_FD;
size_t numfds, numdelfds;
if ( !ASYNC_init_thread(1, 0)
|| (waitctx = ASYNC_WAIT_CTX_new()) == NULL
/* On first run we're not expecting any wait fds */
|| ASYNC_start_job(&job, waitctx, &funcret, waitfd, NULL, 0)
!= ASYNC_PAUSE
|| !ASYNC_WAIT_CTX_get_all_fds(waitctx, NULL, &numfds)
|| numfds != 0
|| !ASYNC_WAIT_CTX_get_changed_fds(waitctx, NULL, &numfds, NULL,
&numdelfds)
|| numfds != 0
|| numdelfds != 0
/* On second run we're expecting one added fd */
|| ASYNC_start_job(&job, waitctx, &funcret, waitfd, NULL, 0)
!= ASYNC_PAUSE
|| !ASYNC_WAIT_CTX_get_all_fds(waitctx, NULL, &numfds)
|| numfds != 1
|| !ASYNC_WAIT_CTX_get_all_fds(waitctx, &fd, &numfds)
|| fd != MAGIC_WAIT_FD
|| (fd = OSSL_BAD_ASYNC_FD, 0) /* Assign to something else */
|| !ASYNC_WAIT_CTX_get_changed_fds(waitctx, NULL, &numfds, NULL,
&numdelfds)
|| numfds != 1
|| numdelfds != 0
|| !ASYNC_WAIT_CTX_get_changed_fds(waitctx, &fd, &numfds, NULL,
&numdelfds)
|| fd != MAGIC_WAIT_FD
/* On third run we expect one deleted fd */
|| ASYNC_start_job(&job, waitctx, &funcret, waitfd, NULL, 0)
!= ASYNC_PAUSE
|| !ASYNC_WAIT_CTX_get_all_fds(waitctx, NULL, &numfds)
|| numfds != 0
|| !ASYNC_WAIT_CTX_get_changed_fds(waitctx, NULL, &numfds, NULL,
&numdelfds)
|| numfds != 0
|| numdelfds != 1
|| !ASYNC_WAIT_CTX_get_changed_fds(waitctx, NULL, &numfds, &delfd,
&numdelfds)
|| delfd != MAGIC_WAIT_FD
/* On last run we are not expecting any wait fd */
|| ASYNC_start_job(&job, waitctx, &funcret, waitfd, NULL, 0)
!= ASYNC_FINISH
|| !ASYNC_WAIT_CTX_get_all_fds(waitctx, NULL, &numfds)
|| numfds != 0
|| !ASYNC_WAIT_CTX_get_changed_fds(waitctx, NULL, &numfds, NULL,
&numdelfds)
|| numfds != 0
|| numdelfds != 0
|| funcret != 1) {
fprintf(stderr, "test_ASYNC_get_wait_fd() failed\n");
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 0;
}
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 1;
}
static int test_ASYNC_block_pause(void)
{
ASYNC_JOB *job = NULL;
int funcret;
ASYNC_WAIT_CTX *waitctx = NULL;
if ( !ASYNC_init_thread(1, 0)
|| (waitctx = ASYNC_WAIT_CTX_new()) == NULL
|| ASYNC_start_job(&job, waitctx, &funcret, blockpause, NULL, 0)
!= ASYNC_PAUSE
|| ASYNC_start_job(&job, waitctx, &funcret, blockpause, NULL, 0)
!= ASYNC_FINISH
|| funcret != 1) {
fprintf(stderr, "test_ASYNC_block_pause() failed\n");
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 0;
}
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
return 1;
}
static int test_ASYNC_start_job_ex(void)
{
ASYNC_JOB *job = NULL;
int funcret;
ASYNC_WAIT_CTX *waitctx = NULL;
OSSL_LIB_CTX *libctx = OSSL_LIB_CTX_new();
OSSL_LIB_CTX *oldctx, *tmpctx, *globalctx;
int ret = 0;
if (libctx == NULL) {
fprintf(stderr,
"test_ASYNC_start_job_ex() failed to create libctx\n");
goto err;
}
globalctx = oldctx = OSSL_LIB_CTX_set0_default(libctx);
if ((waitctx = ASYNC_WAIT_CTX_new()) == NULL
|| ASYNC_start_job(&job, waitctx, &funcret, change_deflt_libctx,
NULL, 0)
!= ASYNC_PAUSE) {
fprintf(stderr,
"test_ASYNC_start_job_ex() failed to start job\n");
goto err;
}
/* Reset the libctx temporarily to find out what it is*/
tmpctx = OSSL_LIB_CTX_set0_default(oldctx);
oldctx = OSSL_LIB_CTX_set0_default(tmpctx);
if (tmpctx != libctx) {
fprintf(stderr,
"test_ASYNC_start_job_ex() failed - unexpected libctx\n");
goto err;
}
if (ASYNC_start_job(&job, waitctx, &funcret, change_deflt_libctx, NULL, 0)
!= ASYNC_PAUSE) {
fprintf(stderr,
"test_ASYNC_start_job_ex() - restarting job failed\n");
goto err;
}
/* Reset the libctx and continue with the global default libctx */
tmpctx = OSSL_LIB_CTX_set0_default(oldctx);
if (tmpctx != libctx) {
fprintf(stderr,
"test_ASYNC_start_job_ex() failed - unexpected libctx\n");
goto err;
}
if (ASYNC_start_job(&job, waitctx, &funcret, change_deflt_libctx, NULL, 0)
!= ASYNC_FINISH
|| funcret != 1) {
fprintf(stderr,
"test_ASYNC_start_job_ex() - finishing job failed\n");
goto err;
}
/* Reset the libctx temporarily to find out what it is*/
tmpctx = OSSL_LIB_CTX_set0_default(libctx);
OSSL_LIB_CTX_set0_default(tmpctx);
if (tmpctx != globalctx) {
fprintf(stderr,
"test_ASYNC_start_job_ex() failed - global libctx check failed\n");
goto err;
}
ret = 1;
err:
ASYNC_WAIT_CTX_free(waitctx);
ASYNC_cleanup_thread();
OSSL_LIB_CTX_free(libctx);
return ret;
}
static void *test_alloc_stack(size_t *num)
{
custom_alloc_used = 1;
return OPENSSL_malloc(*num);
}
static void test_free_stack(void *addr)
{
custom_free_used = 1;
OPENSSL_free(addr);
}
static int test_ASYNC_set_mem_functions(void)
{
ASYNC_stack_alloc_fn alloc_fn;
ASYNC_stack_free_fn free_fn;
/* Not all platforms support this */
if (ASYNC_set_mem_functions(test_alloc_stack, test_free_stack) == 0) return 1;
ASYNC_get_mem_functions(&alloc_fn, &free_fn);
if ((alloc_fn != test_alloc_stack) || (free_fn != test_free_stack)) {
fprintf(stderr,
"test_ASYNC_set_mem_functions() - setting and retrieving custom allocators failed\n");
return 0;
}
if (!ASYNC_init_thread(1, 1)) {
fprintf(stderr,
"test_ASYNC_set_mem_functions() - failed initialising ctx pool\n");
return 0;
}
ASYNC_cleanup_thread();
if (!custom_alloc_used || !custom_free_used) {
fprintf(stderr,
"test_ASYNC_set_mem_functions() - custom allocation functions not used\n");
return 0;
}
return 1;
}
int main(int argc, char **argv)
{
if (!ASYNC_is_capable()) {
fprintf(stderr,
"OpenSSL build is not ASYNC capable - skipping async tests\n");
} else {
if (!test_ASYNC_init_thread()
|| !test_ASYNC_callback_status()
|| !test_ASYNC_start_job()
|| !test_ASYNC_get_current_job()
|| !test_ASYNC_WAIT_CTX_get_all_fds()
|| !test_ASYNC_block_pause()
|| !test_ASYNC_start_job_ex()
|| !test_ASYNC_set_mem_functions()) {
return 1;
}
}
printf("PASS\n");
return 0;
}
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