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/*
* Copyright 2022-2023 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
*/
#include <openssl/bio.h>
#include "testutil.h"
#ifndef OPENSSL_NO_DGRAM
static int test_dgram(void)
{
BIO *bio = BIO_new(BIO_s_dgram_mem()), *rbio = NULL;
int testresult = 0;
const char msg1[] = "12345656";
const char msg2[] = "abcdefghijklmno";
const char msg3[] = "ABCDEF";
const char msg4[] = "FEDCBA";
char buf[80];
if (!TEST_ptr(bio))
goto err;
rbio = BIO_new_mem_buf(msg1, sizeof(msg1));
if (!TEST_ptr(rbio))
goto err;
/* Setting the EOF return value on a non datagram mem BIO should be fine */
if (!TEST_int_gt(BIO_set_mem_eof_return(rbio, 0), 0))
goto err;
/* Setting the EOF return value on a datagram mem BIO should fail */
if (!TEST_int_le(BIO_set_mem_eof_return(bio, 0), 0))
goto err;
/* Write 4 dgrams */
if (!TEST_int_eq(BIO_write(bio, msg1, sizeof(msg1)), sizeof(msg1)))
goto err;
if (!TEST_int_eq(BIO_write(bio, msg2, sizeof(msg2)), sizeof(msg2)))
goto err;
if (!TEST_int_eq(BIO_write(bio, msg3, sizeof(msg3)), sizeof(msg3)))
goto err;
if (!TEST_int_eq(BIO_write(bio, msg4, sizeof(msg4)), sizeof(msg4)))
goto err;
/* Reading all 4 dgrams out again should all be the correct size */
if (!TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg1))
|| !TEST_mem_eq(buf, sizeof(msg1), msg1, sizeof(msg1))
|| !TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg2))
|| !TEST_mem_eq(buf, sizeof(msg2), msg2, sizeof(msg2))
|| !TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg3))
|| !TEST_mem_eq(buf, sizeof(msg3), msg3, sizeof(msg3))
|| !TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg4))
|| !TEST_mem_eq(buf, sizeof(msg4), msg4, sizeof(msg4)))
goto err;
/* Interleaving writes and reads should be fine */
if (!TEST_int_eq(BIO_write(bio, msg1, sizeof(msg1)), sizeof(msg1)))
goto err;
if (!TEST_int_eq(BIO_write(bio, msg2, sizeof(msg2)), sizeof(msg2)))
goto err;
if (!TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg1))
|| !TEST_mem_eq(buf, sizeof(msg1), msg1, sizeof(msg1)))
goto err;
if (!TEST_int_eq(BIO_write(bio, msg3, sizeof(msg3)), sizeof(msg3)))
goto err;
if (!TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg2))
|| !TEST_mem_eq(buf, sizeof(msg2), msg2, sizeof(msg2))
|| !TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg3))
|| !TEST_mem_eq(buf, sizeof(msg3), msg3, sizeof(msg3)))
goto err;
/*
* Requesting less than the available data in a dgram should not impact the
* next packet.
*/
if (!TEST_int_eq(BIO_write(bio, msg1, sizeof(msg1)), sizeof(msg1)))
goto err;
if (!TEST_int_eq(BIO_write(bio, msg2, sizeof(msg2)), sizeof(msg2)))
goto err;
if (!TEST_int_eq(BIO_read(bio, buf, /* Short buffer */ 2), 2)
|| !TEST_mem_eq(buf, 2, msg1, 2))
goto err;
if (!TEST_int_eq(BIO_read(bio, buf, sizeof(buf)), sizeof(msg2))
|| !TEST_mem_eq(buf, sizeof(msg2), msg2, sizeof(msg2)))
goto err;
/*
* Writing a zero length datagram will return zero, but no datagrams will
* be written. Attempting to read when there are no datagrams to read should
* return a negative result, but not eof. Retry flags will be set.
*/
if (!TEST_int_eq(BIO_write(bio, NULL, 0), 0)
|| !TEST_int_lt(BIO_read(bio, buf, sizeof(buf)), 0)
|| !TEST_false(BIO_eof(bio))
|| !TEST_true(BIO_should_retry(bio)))
goto err;
if (!TEST_int_eq(BIO_dgram_set_mtu(bio, 123456), 1)
|| !TEST_int_eq(BIO_dgram_get_mtu(bio), 123456))
goto err;
testresult = 1;
err:
BIO_free(rbio);
BIO_free(bio);
return testresult;
}
#endif
int setup_tests(void)
{
if (!test_skip_common_options()) {
TEST_error("Error parsing test options\n");
return 0;
}
#ifndef OPENSSL_NO_DGRAM
ADD_TEST(test_dgram);
#endif
return 1;
}
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