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openssl/test/quicapitest.c
Matt Caswell ff9728c6d5 Fix test_quic_write_read() 
Fix the "test 2" case of test_quic_write_read(). It is intended to be run
in blocking mode.

The result of a bad interaction between #21087 and #21332

Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/21409)
2023-07-10 11:40:12 +01:00

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/*
* Copyright 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
*/
#include <stdio.h>
#include <string.h>
#include <openssl/opensslconf.h>
#include <openssl/quic.h>
#include "helpers/ssltestlib.h"
#include "helpers/quictestlib.h"
#include "testutil.h"
#include "testutil/output.h"
#include "../ssl/ssl_local.h"
static OSSL_LIB_CTX *libctx = NULL;
static OSSL_PROVIDER *defctxnull = NULL;
static char *certsdir = NULL;
static char *cert = NULL;
static char *privkey = NULL;
static char *datadir = NULL;
static int is_fips = 0;
/* The ssltrace test assumes some options are switched on/off */
#if !defined(OPENSSL_NO_SSL_TRACE) && !defined(OPENSSL_NO_EC) \
&& defined(OPENSSL_NO_ZLIB) && defined(OPENSSL_NO_BROTLI) \
&& defined(OPENSSL_NO_ZSTD) && !defined(OPENSSL_NO_ECX) \
&& !defined(OPENSSL_NO_DH)
# define DO_SSL_TRACE_TEST
#endif
/*
* Test that we read what we've written.
* Test 0: Non-blocking
* Test 1: Blocking
* Test 2: Blocking, introduce socket error, test error handling.
*/
static int test_quic_write_read(int idx)
{
SSL_CTX *cctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method());
SSL *clientquic = NULL;
QUIC_TSERVER *qtserv = NULL;
int j, ret = 0;
unsigned char buf[20];
static char *msg = "A test message";
size_t msglen = strlen(msg);
size_t numbytes = 0;
int ssock = 0, csock = 0;
uint64_t sid = UINT64_MAX;
if (idx >= 1 && !qtest_supports_blocking())
return TEST_skip("Blocking tests not supported in this build");
if (!TEST_ptr(cctx)
|| !TEST_true(qtest_create_quic_objects(libctx, cctx, cert, privkey,
idx >= 1 ? QTEST_FLAG_BLOCK : 0,
&qtserv, &clientquic, NULL))
|| !TEST_true(SSL_set_tlsext_host_name(clientquic, "localhost"))
|| !TEST_true(qtest_create_quic_connection(qtserv, clientquic)))
goto end;
if (idx >= 1) {
if (!TEST_true(BIO_get_fd(ossl_quic_tserver_get0_rbio(qtserv), &ssock)))
goto end;
if (!TEST_int_gt(csock = SSL_get_rfd(clientquic), 0))
goto end;
}
sid = 0; /* client-initiated bidirectional stream */
for (j = 0; j < 2; j++) {
/* Check that sending and receiving app data is ok */
if (!TEST_true(SSL_write_ex(clientquic, msg, msglen, &numbytes))
|| !TEST_size_t_eq(numbytes, msglen))
goto end;
if (idx >= 1) {
do {
if (!TEST_true(wait_until_sock_readable(ssock)))
goto end;
ossl_quic_tserver_tick(qtserv);
if (!TEST_true(ossl_quic_tserver_read(qtserv, sid, buf, sizeof(buf),
&numbytes)))
goto end;
} while (numbytes == 0);
if (!TEST_mem_eq(buf, numbytes, msg, msglen))
goto end;
}
if (idx >= 2 && j > 0)
/* Introduce permanent socket error */
BIO_closesocket(csock);
ossl_quic_tserver_tick(qtserv);
if (!TEST_true(ossl_quic_tserver_write(qtserv, sid, (unsigned char *)msg,
msglen, &numbytes)))
goto end;
ossl_quic_tserver_tick(qtserv);
SSL_handle_events(clientquic);
if (idx >= 2 && j > 0) {
if (!TEST_false(SSL_read_ex(clientquic, buf, 1, &numbytes))
|| !TEST_int_eq(SSL_get_error(clientquic, 0),
SSL_ERROR_SYSCALL)
|| !TEST_false(SSL_write_ex(clientquic, msg, msglen,
&numbytes))
|| !TEST_int_eq(SSL_get_error(clientquic, 0),
SSL_ERROR_SYSCALL))
goto end;
break;
}
/*
* In blocking mode the SSL_read_ex call will block until the socket is
* readable and has our data. In non-blocking mode we're doing everything
* in memory, so it should be immediately available
*/
if (!TEST_true(SSL_read_ex(clientquic, buf, 1, &numbytes))
|| !TEST_size_t_eq(numbytes, 1)
|| !TEST_true(SSL_has_pending(clientquic))
|| !TEST_int_eq(SSL_pending(clientquic), msglen - 1)
|| !TEST_true(SSL_read_ex(clientquic, buf + 1, sizeof(buf) - 1, &numbytes))
|| !TEST_mem_eq(buf, numbytes + 1, msg, msglen))
goto end;
}
if (!TEST_true(qtest_shutdown(qtserv, clientquic)))
goto end;
ret = 1;
end:
ossl_quic_tserver_free(qtserv);
SSL_free(clientquic);
SSL_CTX_free(cctx);
return ret;
}
/* Test that a vanilla QUIC SSL object has the expected ciphersuites available */
static int test_ciphersuites(void)
{
SSL_CTX *ctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method());
SSL *ssl;
int testresult = 0;
const STACK_OF(SSL_CIPHER) *ciphers = NULL;
const SSL_CIPHER *cipher;
/* We expect this exact list of ciphersuites by default */
int cipherids[] = {
TLS1_3_CK_AES_256_GCM_SHA384,
#if !defined(OPENSSL_NO_CHACHA) && !defined(OPENSSL_NO_POLY1305)
TLS1_3_CK_CHACHA20_POLY1305_SHA256,
#endif
TLS1_3_CK_AES_128_GCM_SHA256
};
size_t i, j;
if (!TEST_ptr(ctx))
return 0;
ssl = SSL_new(ctx);
if (!TEST_ptr(ssl))
goto err;
ciphers = SSL_get_ciphers(ssl);
for (i = 0, j = 0; i < OSSL_NELEM(cipherids); i++) {
if (cipherids[i] == TLS1_3_CK_CHACHA20_POLY1305_SHA256 && is_fips)
continue;
cipher = sk_SSL_CIPHER_value(ciphers, j++);
if (!TEST_ptr(cipher))
goto err;
if (!TEST_uint_eq(SSL_CIPHER_get_id(cipher), cipherids[i]))
goto err;
}
/* We should have checked all the ciphers in the stack */
if (!TEST_int_eq(sk_SSL_CIPHER_num(ciphers), j))
goto err;
testresult = 1;
err:
SSL_free(ssl);
SSL_CTX_free(ctx);
return testresult;
}
/*
* Test that SSL_version, SSL_get_version, SSL_is_quic, SSL_is_tls and
* SSL_is_dtls return the expected results for a QUIC connection. Compare with
* test_version() in sslapitest.c which does the same thing for TLS/DTLS
* connections.
*/
static int test_version(void)
{
SSL_CTX *cctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method());
SSL *clientquic = NULL;
QUIC_TSERVER *qtserv = NULL;
int testresult = 0;
if (!TEST_ptr(cctx)
|| !TEST_true(qtest_create_quic_objects(libctx, cctx, cert, privkey,
0, &qtserv, &clientquic,
NULL))
|| !TEST_true(qtest_create_quic_connection(qtserv, clientquic)))
goto err;
if (!TEST_int_eq(SSL_version(clientquic), OSSL_QUIC1_VERSION)
|| !TEST_str_eq(SSL_get_version(clientquic), "QUICv1"))
goto err;
if (!TEST_true(SSL_is_quic(clientquic))
|| !TEST_false(SSL_is_tls(clientquic))
|| !TEST_false(SSL_is_dtls(clientquic)))
goto err;
testresult = 1;
err:
ossl_quic_tserver_free(qtserv);
SSL_free(clientquic);
SSL_CTX_free(cctx);
return testresult;
}
#if defined(DO_SSL_TRACE_TEST)
static void strip_line_ends(char *str)
{
size_t i;
for (i = strlen(str);
i > 0 && (str[i - 1] == '\n' || str[i - 1] == '\r');
i--);
str[i] = '\0';
}
static int compare_with_file(BIO *membio)
{
BIO *file = NULL;
char buf1[512], buf2[512];
char *reffile;
int ret = 0;
size_t i;
reffile = test_mk_file_path(datadir, "ssltraceref.txt");
if (!TEST_ptr(reffile))
goto err;
file = BIO_new_file(reffile, "rb");
if (!TEST_ptr(file))
goto err;
while (BIO_gets(file, buf1, sizeof(buf1)) > 0) {
if (BIO_gets(membio, buf2, sizeof(buf2)) <= 0) {
TEST_error("Failed reading mem data");
goto err;
}
strip_line_ends(buf1);
strip_line_ends(buf2);
if (strlen(buf1) != strlen(buf2)) {
TEST_error("Actual and ref line data length mismatch");
TEST_info("%s", buf1);
TEST_info("%s", buf2);
goto err;
}
for (i = 0; i < strlen(buf1); i++) {
/* '?' is a wild card character in the reference text */
if (buf1[i] == '?')
buf2[i] = '?';
}
if (!TEST_str_eq(buf1, buf2))
goto err;
}
if (!TEST_true(BIO_eof(file))
|| !TEST_true(BIO_eof(membio)))
goto err;
ret = 1;
err:
OPENSSL_free(reffile);
BIO_free(file);
return ret;
}
/*
* Tests that the SSL_trace() msg_callback works as expected with a QUIC
* connection. This also provides testing of the msg_callback at the same time.
*/
static int test_ssl_trace(void)
{
SSL_CTX *cctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method());
SSL *clientquic = NULL;
QUIC_TSERVER *qtserv = NULL;
int testresult = 0;
BIO *bio = BIO_new(BIO_s_mem());
/*
* Ensure we only configure ciphersuites that are available with both the
* default and fips providers to get the same output in both cases
*/
if (!TEST_true(SSL_CTX_set_ciphersuites(cctx, "TLS_AES_128_GCM_SHA256")))
goto err;
if (!TEST_ptr(cctx)
|| !TEST_ptr(bio)
|| !TEST_true(qtest_create_quic_objects(libctx, cctx, cert, privkey,
0, &qtserv, &clientquic,
NULL)))
goto err;
SSL_set_msg_callback(clientquic, SSL_trace);
SSL_set_msg_callback_arg(clientquic, bio);
if (!TEST_true(qtest_create_quic_connection(qtserv, clientquic)))
goto err;
if (!TEST_true(compare_with_file(bio)))
goto err;
testresult = 1;
err:
ossl_quic_tserver_free(qtserv);
SSL_free(clientquic);
SSL_CTX_free(cctx);
BIO_free(bio);
return testresult;
}
#endif
static int ensure_valid_ciphers(const STACK_OF(SSL_CIPHER) *ciphers)
{
size_t i;
/* Ensure ciphersuite list is suitably subsetted. */
for (i = 0; i < (size_t)sk_SSL_CIPHER_num(ciphers); ++i) {
const SSL_CIPHER *cipher = sk_SSL_CIPHER_value(ciphers, i);
switch (SSL_CIPHER_get_id(cipher)) {
case TLS1_3_CK_AES_128_GCM_SHA256:
case TLS1_3_CK_AES_256_GCM_SHA384:
case TLS1_3_CK_CHACHA20_POLY1305_SHA256:
break;
default:
TEST_error("forbidden cipher: %s", SSL_CIPHER_get_name(cipher));
return 0;
}
}
return 1;
}
/*
* Test that handshake-layer APIs which shouldn't work don't work with QUIC.
*/
static int test_quic_forbidden_apis_ctx(void)
{
int testresult = 0;
SSL_CTX *ctx = NULL;
if (!TEST_ptr(ctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method())))
goto err;
/* This function returns 0 on success and 1 on error, and should fail. */
if (!TEST_true(SSL_CTX_set_tlsext_use_srtp(ctx, "SRTP_AEAD_AES_128_GCM")))
goto err;
/*
* List of ciphersuites we do and don't allow in QUIC.
*/
#define QUIC_CIPHERSUITES \
"TLS_AES_128_GCM_SHA256:" \
"TLS_AES_256_GCM_SHA384:" \
"TLS_CHACHA20_POLY1305_SHA256"
#define NON_QUIC_CIPHERSUITES \
"TLS_AES_128_CCM_SHA256:" \
"TLS_AES_256_CCM_SHA384:" \
"TLS_AES_128_CCM_8_SHA256"
/* Set TLSv1.3 ciphersuite list for the SSL_CTX. */
if (!TEST_true(SSL_CTX_set_ciphersuites(ctx,
QUIC_CIPHERSUITES ":"
NON_QUIC_CIPHERSUITES)))
goto err;
/*
* Forbidden ciphersuites should show up in SSL_CTX accessors, they are only
* filtered in SSL_get1_supported_ciphers, so we don't check for
* non-inclusion here.
*/
testresult = 1;
err:
SSL_CTX_free(ctx);
return testresult;
}
static int test_quic_forbidden_apis(void)
{
int testresult = 0;
SSL_CTX *ctx = NULL;
SSL *ssl = NULL;
STACK_OF(SSL_CIPHER) *ciphers = NULL;
if (!TEST_ptr(ctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method())))
goto err;
if (!TEST_ptr(ssl = SSL_new(ctx)))
goto err;
/* This function returns 0 on success and 1 on error, and should fail. */
if (!TEST_true(SSL_set_tlsext_use_srtp(ssl, "SRTP_AEAD_AES_128_GCM")))
goto err;
/* Set TLSv1.3 ciphersuite list for the SSL_CTX. */
if (!TEST_true(SSL_set_ciphersuites(ssl,
QUIC_CIPHERSUITES ":"
NON_QUIC_CIPHERSUITES)))
goto err;
/* Non-QUIC ciphersuites must not appear in supported ciphers list. */
if (!TEST_ptr(ciphers = SSL_get1_supported_ciphers(ssl))
|| !TEST_true(ensure_valid_ciphers(ciphers)))
goto err;
testresult = 1;
err:
sk_SSL_CIPHER_free(ciphers);
SSL_free(ssl);
SSL_CTX_free(ctx);
return testresult;
}
static int test_quic_forbidden_options(void)
{
int testresult = 0;
SSL_CTX *ctx = NULL;
SSL *ssl = NULL;
char buf[16];
size_t len;
if (!TEST_ptr(ctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method())))
goto err;
/* QUIC options restrictions do not affect SSL_CTX */
SSL_CTX_set_options(ctx, UINT64_MAX);
if (!TEST_uint64_t_eq(SSL_CTX_get_options(ctx), UINT64_MAX))
goto err;
/* Set options on CTX which should not be inherited (tested below). */
SSL_CTX_set_read_ahead(ctx, 1);
SSL_CTX_set_max_early_data(ctx, 1);
SSL_CTX_set_recv_max_early_data(ctx, 1);
SSL_CTX_set_quiet_shutdown(ctx, 1);
if (!TEST_ptr(ssl = SSL_new(ctx)))
goto err;
/* Only permitted options get transferred to SSL object */
if (!TEST_uint64_t_eq(SSL_get_options(ssl), OSSL_QUIC_PERMITTED_OPTIONS))
goto err;
/* Try again using SSL_set_options */
SSL_set_options(ssl, UINT64_MAX);
if (!TEST_uint64_t_eq(SSL_get_options(ssl), OSSL_QUIC_PERMITTED_OPTIONS))
goto err;
/* Clear everything */
SSL_clear_options(ssl, UINT64_MAX);
if (!TEST_uint64_t_eq(SSL_get_options(ssl), 0))
goto err;
/* Readahead */
if (!TEST_false(SSL_get_read_ahead(ssl)))
goto err;
SSL_set_read_ahead(ssl, 1);
if (!TEST_false(SSL_get_read_ahead(ssl)))
goto err;
/* Block padding */
if (!TEST_true(SSL_set_block_padding(ssl, 0))
|| !TEST_true(SSL_set_block_padding(ssl, 1))
|| !TEST_false(SSL_set_block_padding(ssl, 2)))
goto err;
/* Max fragment length */
if (!TEST_true(SSL_set_tlsext_max_fragment_length(ssl, TLSEXT_max_fragment_length_DISABLED))
|| !TEST_false(SSL_set_tlsext_max_fragment_length(ssl, TLSEXT_max_fragment_length_512)))
goto err;
/* Max early data */
if (!TEST_false(SSL_set_recv_max_early_data(ssl, 1))
|| !TEST_false(SSL_set_max_early_data(ssl, 1)))
goto err;
/* Read/Write */
if (!TEST_false(SSL_read_early_data(ssl, buf, sizeof(buf), &len))
|| !TEST_false(SSL_write_early_data(ssl, buf, sizeof(buf), &len)))
goto err;
/* Buffer Management */
if (!TEST_true(SSL_alloc_buffers(ssl))
|| !TEST_false(SSL_free_buffers(ssl)))
goto err;
/* Pipelining */
if (!TEST_false(SSL_set_max_send_fragment(ssl, 2))
|| !TEST_false(SSL_set_split_send_fragment(ssl, 2))
|| !TEST_false(SSL_set_max_pipelines(ssl, 2)))
goto err;
/* HRR */
if (!TEST_false(SSL_stateless(ssl)))
goto err;
/* Quiet Shutdown */
if (!TEST_false(SSL_get_quiet_shutdown(ssl)))
goto err;
/* No duplication */
if (!TEST_ptr_null(SSL_dup(ssl)))
goto err;
/* No clear */
if (!TEST_false(SSL_clear(ssl)))
goto err;
testresult = 1;
err:
SSL_free(ssl);
SSL_CTX_free(ctx);
return testresult;
}
static int test_quic_set_fd(int idx)
{
int testresult = 0;
SSL_CTX *ctx = NULL;
SSL *ssl = NULL;
int fd = -1, resfd = -1;
BIO *bio = NULL;
if (!TEST_ptr(ctx = SSL_CTX_new_ex(libctx, NULL, OSSL_QUIC_client_method())))
goto err;
if (!TEST_ptr(ssl = SSL_new(ctx)))
goto err;
if (!TEST_int_ge(fd = BIO_socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP, 0), 0))
goto err;
if (idx == 0) {
if (!TEST_true(SSL_set_fd(ssl, fd)))
goto err;
if (!TEST_ptr(bio = SSL_get_rbio(ssl)))
goto err;
if (!TEST_ptr_eq(bio, SSL_get_wbio(ssl)))
goto err;
} else if (idx == 1) {
if (!TEST_true(SSL_set_rfd(ssl, fd)))
goto err;
if (!TEST_ptr(bio = SSL_get_rbio(ssl)))
goto err;
if (!TEST_ptr_null(SSL_get_wbio(ssl)))
goto err;
} else {
if (!TEST_true(SSL_set_wfd(ssl, fd)))
goto err;
if (!TEST_ptr(bio = SSL_get_wbio(ssl)))
goto err;
if (!TEST_ptr_null(SSL_get_rbio(ssl)))
goto err;
}
if (!TEST_int_eq(BIO_method_type(bio), BIO_TYPE_DGRAM))
goto err;
if (!TEST_true(BIO_get_fd(bio, &resfd))
|| !TEST_int_eq(resfd, fd))
goto err;
testresult = 1;
err:
SSL_free(ssl);
SSL_CTX_free(ctx);
if (fd >= 0)
BIO_closesocket(fd);
return testresult;
}
OPT_TEST_DECLARE_USAGE("provider config certsdir datadir\n")
int setup_tests(void)
{
char *modulename;
char *configfile;
libctx = OSSL_LIB_CTX_new();
if (!TEST_ptr(libctx))
return 0;
defctxnull = OSSL_PROVIDER_load(NULL, "null");
/*
* Verify that the default and fips providers in the default libctx are not
* available
*/
if (!TEST_false(OSSL_PROVIDER_available(NULL, "default"))
|| !TEST_false(OSSL_PROVIDER_available(NULL, "fips")))
goto err;
if (!test_skip_common_options()) {
TEST_error("Error parsing test options\n");
goto err;
}
if (!TEST_ptr(modulename = test_get_argument(0))
|| !TEST_ptr(configfile = test_get_argument(1))
|| !TEST_ptr(certsdir = test_get_argument(2))
|| !TEST_ptr(datadir = test_get_argument(3)))
goto err;
if (!TEST_true(OSSL_LIB_CTX_load_config(libctx, configfile)))
goto err;
/* Check we have the expected provider available */
if (!TEST_true(OSSL_PROVIDER_available(libctx, modulename)))
goto err;
/* Check the default provider is not available */
if (strcmp(modulename, "default") != 0
&& !TEST_false(OSSL_PROVIDER_available(libctx, "default")))
goto err;
if (strcmp(modulename, "fips") == 0)
is_fips = 1;
cert = test_mk_file_path(certsdir, "servercert.pem");
if (cert == NULL)
goto err;
privkey = test_mk_file_path(certsdir, "serverkey.pem");
if (privkey == NULL)
goto err;
ADD_ALL_TESTS(test_quic_write_read, 3);
ADD_TEST(test_ciphersuites);
ADD_TEST(test_version);
#if defined(DO_SSL_TRACE_TEST)
ADD_TEST(test_ssl_trace);
#endif
ADD_TEST(test_quic_forbidden_apis_ctx);
ADD_TEST(test_quic_forbidden_apis);
ADD_TEST(test_quic_forbidden_options);
ADD_ALL_TESTS(test_quic_set_fd, 3);
return 1;
err:
cleanup_tests();
return 0;
}
void cleanup_tests(void)
{
OPENSSL_free(cert);
OPENSSL_free(privkey);
OSSL_PROVIDER_unload(defctxnull);
OSSL_LIB_CTX_free(libctx);
}
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