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/*
* Copyright 2016-2020 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 may obtain a copy of the License at
* https://www.openssl.org/source/license.html
* or in the file LICENSE in the source distribution.
*/
#include <string.h>
#include <openssl/ssl.h>
#include <openssl/bio.h>
#include <openssl/err.h>
/* We include internal headers so we can check if the buffers are allocated */
#include "../ssl/ssl_local.h"
#include "../ssl/record/record_local.h"
#include "internal/recordmethod.h"
#include "../ssl/record/methods/recmethod_local.h"
#include "internal/packet.h"
#include "helpers/ssltestlib.h"
#include "testutil.h"
struct async_ctrs {
unsigned int rctr;
unsigned int wctr;
};
static SSL_CTX *serverctx = NULL;
static SSL_CTX *clientctx = NULL;
#define MAX_ATTEMPTS 100
static int checkbuffers(SSL *s, int isalloced)
{
SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
OSSL_RECORD_LAYER *rrl = sc->rlayer.rrl;
OSSL_RECORD_LAYER *wrl = sc->rlayer.wrl;
if (isalloced)
return rrl->rbuf.buf != NULL && wrl->wbuf[0].buf != NULL;
return rrl->rbuf.buf == NULL && wrl->wbuf[0].buf == NULL;
}
/*
* There are 9 passes in the tests
* 0 = control test
* tests during writes
* 1 = free buffers
* 2 = + allocate buffers after free
* 3 = + allocate buffers again
* 4 = + free buffers after allocation
* tests during reads
* 5 = + free buffers
* 6 = + free buffers again
* 7 = + allocate buffers after free
* 8 = + free buffers after allocation
*/
static int test_func(int test)
{
int result = 0;
SSL *serverssl = NULL, *clientssl = NULL;
int ret;
size_t i, j;
const char testdata[] = "Test data";
char buf[sizeof(testdata)];
if (!TEST_true(create_ssl_objects(serverctx, clientctx, &serverssl, &clientssl,
NULL, NULL))) {
TEST_error("Test %d failed: Create SSL objects failed\n", test);
goto end;
}
if (!TEST_true(create_ssl_connection(serverssl, clientssl, SSL_ERROR_NONE))) {
TEST_error("Test %d failed: Create SSL connection failed\n", test);
goto end;
}
/*
* Send and receive some test data. Do the whole thing twice to ensure
* we hit at least one async event in both reading and writing
*/
for (j = 0; j < 2; j++) {
int len;
/*
* Write some test data. It should never take more than 2 attempts
* (the first one might be a retryable fail).
*/
for (ret = -1, i = 0, len = 0; len != sizeof(testdata) && i < 2;
i++) {
/* test == 0 mean to free/allocate = control */
if (test >= 1 && (!TEST_true(SSL_free_buffers(clientssl))
|| !TEST_true(checkbuffers(clientssl, 0))))
goto end;
if (test >= 2 && (!TEST_true(SSL_alloc_buffers(clientssl))
|| !TEST_true(checkbuffers(clientssl, 1))))
goto end;
/* allocate a second time */
if (test >= 3 && (!TEST_true(SSL_alloc_buffers(clientssl))
|| !TEST_true(checkbuffers(clientssl, 1))))
goto end;
if (test >= 4 && (!TEST_true(SSL_free_buffers(clientssl))
|| !TEST_true(checkbuffers(clientssl, 0))))
goto end;
ret = SSL_write(clientssl, testdata + len,
sizeof(testdata) - len);
if (ret > 0) {
len += ret;
} else {
int ssl_error = SSL_get_error(clientssl, ret);
if (ssl_error == SSL_ERROR_SYSCALL ||
ssl_error == SSL_ERROR_SSL) {
TEST_error("Test %d failed: Failed to write app data\n", test);
goto end;
}
}
}
if (!TEST_size_t_eq(len, sizeof(testdata)))
goto end;
/*
* Now read the test data. It may take more attempts here because
* it could fail once for each byte read, including all overhead
* bytes from the record header/padding etc.
*/
for (ret = -1, i = 0, len = 0; len != sizeof(testdata) &&
i < MAX_ATTEMPTS; i++)
{
if (test >= 5 && (!TEST_true(SSL_free_buffers(serverssl))
|| !TEST_true(checkbuffers(serverssl, 0))))
goto end;
/* free a second time */
if (test >= 6 && (!TEST_true(SSL_free_buffers(serverssl))
|| !TEST_true(checkbuffers(serverssl, 0))))
goto end;
if (test >= 7 && (!TEST_true(SSL_alloc_buffers(serverssl))
|| !TEST_true(checkbuffers(serverssl, 1))))
goto end;
if (test >= 8 && (!TEST_true(SSL_free_buffers(serverssl))
|| !TEST_true(checkbuffers(serverssl, 0))))
goto end;
ret = SSL_read(serverssl, buf + len, sizeof(buf) - len);
if (ret > 0) {
len += ret;
} else {
int ssl_error = SSL_get_error(serverssl, ret);
if (ssl_error == SSL_ERROR_SYSCALL ||
ssl_error == SSL_ERROR_SSL) {
TEST_error("Test %d failed: Failed to read app data\n", test);
goto end;
}
}
}
if (!TEST_mem_eq(buf, len, testdata, sizeof(testdata)))
goto end;
}
result = 1;
end:
if (!result)
ERR_print_errors_fp(stderr);
SSL_free(clientssl);
SSL_free(serverssl);
return result;
}
OPT_TEST_DECLARE_USAGE("certfile privkeyfile\n")
int setup_tests(void)
{
char *cert, *pkey;
if (!test_skip_common_options()) {
TEST_error("Error parsing test options\n");
return 0;
}
if (!TEST_ptr(cert = test_get_argument(0))
|| !TEST_ptr(pkey = test_get_argument(1)))
return 0;
if (!create_ssl_ctx_pair(NULL, TLS_server_method(), TLS_client_method(),
TLS1_VERSION, 0,
&serverctx, &clientctx, cert, pkey)) {
TEST_error("Failed to create SSL_CTX pair\n");
return 0;
}
ADD_ALL_TESTS(test_func, 9);
return 1;
}
void cleanup_tests(void)
{
SSL_CTX_free(clientctx);
SSL_CTX_free(serverctx);
}
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