Imported OpenSSL 1.1.1a
This commit is contained in:
Steve Dower
409
test/asynciotest.c
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409
test/asynciotest.c
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/*
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* Copyright 2016-2018 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the OpenSSL licenses, (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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* https://www.openssl.org/source/license.html
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* or in the file LICENSE in the source distribution.
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*/
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#include <string.h>
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#include <openssl/ssl.h>
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#include <openssl/bio.h>
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#include <openssl/err.h>
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#include "../ssl/packet_locl.h"
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#include "ssltestlib.h"
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#include "testutil.h"
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/* Should we fragment records or not? 0 = no, !0 = yes*/
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static int fragment = 0;
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static char *cert = NULL;
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static char *privkey = NULL;
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static int async_new(BIO *bi);
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static int async_free(BIO *a);
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static int async_read(BIO *b, char *out, int outl);
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static int async_write(BIO *b, const char *in, int inl);
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static long async_ctrl(BIO *b, int cmd, long num, void *ptr);
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static int async_gets(BIO *bp, char *buf, int size);
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static int async_puts(BIO *bp, const char *str);
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/* Choose a sufficiently large type likely to be unused for this custom BIO */
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# define BIO_TYPE_ASYNC_FILTER (0x80 | BIO_TYPE_FILTER)
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static BIO_METHOD *methods_async = NULL;
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struct async_ctrs {
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unsigned int rctr;
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unsigned int wctr;
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};
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static const BIO_METHOD *bio_f_async_filter(void)
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{
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if (methods_async == NULL) {
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methods_async = BIO_meth_new(BIO_TYPE_ASYNC_FILTER, "Async filter");
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if ( methods_async == NULL
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|| !BIO_meth_set_write(methods_async, async_write)
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|| !BIO_meth_set_read(methods_async, async_read)
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|| !BIO_meth_set_puts(methods_async, async_puts)
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|| !BIO_meth_set_gets(methods_async, async_gets)
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|| !BIO_meth_set_ctrl(methods_async, async_ctrl)
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|| !BIO_meth_set_create(methods_async, async_new)
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|| !BIO_meth_set_destroy(methods_async, async_free))
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return NULL;
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}
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return methods_async;
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}
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static int async_new(BIO *bio)
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{
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struct async_ctrs *ctrs;
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ctrs = OPENSSL_zalloc(sizeof(struct async_ctrs));
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if (ctrs == NULL)
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return 0;
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BIO_set_data(bio, ctrs);
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BIO_set_init(bio, 1);
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return 1;
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}
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static int async_free(BIO *bio)
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{
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struct async_ctrs *ctrs;
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if (bio == NULL)
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return 0;
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ctrs = BIO_get_data(bio);
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OPENSSL_free(ctrs);
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BIO_set_data(bio, NULL);
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BIO_set_init(bio, 0);
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return 1;
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}
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static int async_read(BIO *bio, char *out, int outl)
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{
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struct async_ctrs *ctrs;
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int ret = 0;
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BIO *next = BIO_next(bio);
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if (outl <= 0)
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return 0;
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if (next == NULL)
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return 0;
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ctrs = BIO_get_data(bio);
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BIO_clear_retry_flags(bio);
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if (ctrs->rctr > 0) {
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ret = BIO_read(next, out, 1);
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if (ret <= 0 && BIO_should_read(next))
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BIO_set_retry_read(bio);
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ctrs->rctr = 0;
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} else {
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ctrs->rctr++;
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BIO_set_retry_read(bio);
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}
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return ret;
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}
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#define MIN_RECORD_LEN 6
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#define CONTENTTYPEPOS 0
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#define VERSIONHIPOS 1
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#define VERSIONLOPOS 2
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#define DATAPOS 5
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static int async_write(BIO *bio, const char *in, int inl)
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{
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struct async_ctrs *ctrs;
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int ret = 0;
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size_t written = 0;
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BIO *next = BIO_next(bio);
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if (inl <= 0)
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return 0;
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if (next == NULL)
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return 0;
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ctrs = BIO_get_data(bio);
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BIO_clear_retry_flags(bio);
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if (ctrs->wctr > 0) {
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ctrs->wctr = 0;
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if (fragment) {
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PACKET pkt;
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if (!PACKET_buf_init(&pkt, (const unsigned char *)in, inl))
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return -1;
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while (PACKET_remaining(&pkt) > 0) {
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PACKET payload, wholebody, sessionid, extensions;
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unsigned int contenttype, versionhi, versionlo, data;
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unsigned int msgtype = 0, negversion = 0;
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if (!PACKET_get_1(&pkt, &contenttype)
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|| !PACKET_get_1(&pkt, &versionhi)
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|| !PACKET_get_1(&pkt, &versionlo)
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|| !PACKET_get_length_prefixed_2(&pkt, &payload))
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return -1;
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/* Pretend we wrote out the record header */
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written += SSL3_RT_HEADER_LENGTH;
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wholebody = payload;
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if (contenttype == SSL3_RT_HANDSHAKE
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&& !PACKET_get_1(&wholebody, &msgtype))
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return -1;
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if (msgtype == SSL3_MT_SERVER_HELLO) {
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if (!PACKET_forward(&wholebody,
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SSL3_HM_HEADER_LENGTH - 1)
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|| !PACKET_get_net_2(&wholebody, &negversion)
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/* Skip random (32 bytes) */
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|| !PACKET_forward(&wholebody, 32)
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/* Skip session id */
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|| !PACKET_get_length_prefixed_1(&wholebody,
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&sessionid)
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/*
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* Skip ciphersuite (2 bytes) and compression
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* method (1 byte)
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*/
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|| !PACKET_forward(&wholebody, 2 + 1)
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|| !PACKET_get_length_prefixed_2(&wholebody,
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&extensions))
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return -1;
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/*
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* Find the negotiated version in supported_versions
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* extension, if present.
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*/
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while (PACKET_remaining(&extensions)) {
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unsigned int type;
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PACKET extbody;
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if (!PACKET_get_net_2(&extensions, &type)
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|| !PACKET_get_length_prefixed_2(&extensions,
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&extbody))
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return -1;
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if (type == TLSEXT_TYPE_supported_versions
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&& (!PACKET_get_net_2(&extbody, &negversion)
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|| PACKET_remaining(&extbody) != 0))
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return -1;
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}
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}
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while (PACKET_get_1(&payload, &data)) {
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/* Create a new one byte long record for each byte in the
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* record in the input buffer
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*/
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char smallrec[MIN_RECORD_LEN] = {
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0, /* Content type */
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0, /* Version hi */
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0, /* Version lo */
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0, /* Length hi */
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1, /* Length lo */
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0 /* Data */
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};
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smallrec[CONTENTTYPEPOS] = contenttype;
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smallrec[VERSIONHIPOS] = versionhi;
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smallrec[VERSIONLOPOS] = versionlo;
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smallrec[DATAPOS] = data;
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ret = BIO_write(next, smallrec, MIN_RECORD_LEN);
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if (ret <= 0)
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return -1;
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written++;
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}
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/*
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* We can't fragment anything after the ServerHello (or CCS <=
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* TLS1.2), otherwise we get a bad record MAC
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*/
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if (contenttype == SSL3_RT_CHANGE_CIPHER_SPEC
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|| (negversion == TLS1_3_VERSION
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&& msgtype == SSL3_MT_SERVER_HELLO)) {
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fragment = 0;
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break;
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}
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}
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}
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/* Write any data we have left after fragmenting */
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ret = 0;
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if ((int)written < inl) {
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ret = BIO_write(next, in + written, inl - written);
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}
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if (ret <= 0 && BIO_should_write(next))
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BIO_set_retry_write(bio);
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else
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ret += written;
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} else {
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ctrs->wctr++;
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BIO_set_retry_write(bio);
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}
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return ret;
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}
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static long async_ctrl(BIO *bio, int cmd, long num, void *ptr)
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{
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long ret;
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BIO *next = BIO_next(bio);
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if (next == NULL)
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return 0;
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switch (cmd) {
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case BIO_CTRL_DUP:
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ret = 0L;
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break;
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default:
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ret = BIO_ctrl(next, cmd, num, ptr);
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break;
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}
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return ret;
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}
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static int async_gets(BIO *bio, char *buf, int size)
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{
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/* We don't support this - not needed anyway */
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return -1;
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}
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static int async_puts(BIO *bio, const char *str)
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{
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return async_write(bio, str, strlen(str));
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}
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#define MAX_ATTEMPTS 100
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static int test_asyncio(int test)
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{
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SSL_CTX *serverctx = NULL, *clientctx = NULL;
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SSL *serverssl = NULL, *clientssl = NULL;
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BIO *s_to_c_fbio = NULL, *c_to_s_fbio = NULL;
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int testresult = 0, ret;
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size_t i, j;
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const char testdata[] = "Test data";
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char buf[sizeof(testdata)];
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if (!TEST_true(create_ssl_ctx_pair(TLS_server_method(), TLS_client_method(),
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TLS1_VERSION, TLS_MAX_VERSION,
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&serverctx, &clientctx, cert, privkey)))
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goto end;
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/*
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* We do 2 test runs. The first time around we just do a normal handshake
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* with lots of async io going on. The second time around we also break up
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* all records so that the content is only one byte length (up until the
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* CCS)
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*/
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if (test == 1)
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fragment = 1;
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s_to_c_fbio = BIO_new(bio_f_async_filter());
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c_to_s_fbio = BIO_new(bio_f_async_filter());
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if (!TEST_ptr(s_to_c_fbio)
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|| !TEST_ptr(c_to_s_fbio)) {
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BIO_free(s_to_c_fbio);
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BIO_free(c_to_s_fbio);
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goto end;
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}
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/* BIOs get freed on error */
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if (!TEST_true(create_ssl_objects(serverctx, clientctx, &serverssl,
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&clientssl, s_to_c_fbio, c_to_s_fbio))
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|| !TEST_true(create_ssl_connection(serverssl, clientssl,
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SSL_ERROR_NONE)))
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goto end;
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/*
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* Send and receive some test data. Do the whole thing twice to ensure
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* we hit at least one async event in both reading and writing
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*/
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for (j = 0; j < 2; j++) {
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int len;
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/*
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* Write some test data. It should never take more than 2 attempts
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* (the first one might be a retryable fail).
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*/
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for (ret = -1, i = 0, len = 0; len != sizeof(testdata) && i < 2;
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i++) {
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ret = SSL_write(clientssl, testdata + len,
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sizeof(testdata) - len);
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if (ret > 0) {
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len += ret;
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} else {
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int ssl_error = SSL_get_error(clientssl, ret);
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if (!TEST_false(ssl_error == SSL_ERROR_SYSCALL ||
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ssl_error == SSL_ERROR_SSL))
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goto end;
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}
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}
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if (!TEST_size_t_eq(len, sizeof(testdata)))
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goto end;
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/*
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* Now read the test data. It may take more attempts here because
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* it could fail once for each byte read, including all overhead
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* bytes from the record header/padding etc.
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*/
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for (ret = -1, i = 0, len = 0; len != sizeof(testdata) &&
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i < MAX_ATTEMPTS; i++) {
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ret = SSL_read(serverssl, buf + len, sizeof(buf) - len);
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if (ret > 0) {
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len += ret;
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} else {
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int ssl_error = SSL_get_error(serverssl, ret);
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if (!TEST_false(ssl_error == SSL_ERROR_SYSCALL ||
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ssl_error == SSL_ERROR_SSL))
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goto end;
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}
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}
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if (!TEST_mem_eq(testdata, sizeof(testdata), buf, len))
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goto end;
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}
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/* Also frees the BIOs */
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SSL_free(clientssl);
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SSL_free(serverssl);
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clientssl = serverssl = NULL;
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testresult = 1;
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end:
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SSL_free(clientssl);
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SSL_free(serverssl);
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SSL_CTX_free(clientctx);
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SSL_CTX_free(serverctx);
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return testresult;
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}
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int setup_tests(void)
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{
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if (!TEST_ptr(cert = test_get_argument(0))
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|| !TEST_ptr(privkey = test_get_argument(1)))
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return 0;
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ADD_ALL_TESTS(test_asyncio, 2);
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return 1;
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}
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void cleanup_tests(void)
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{
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BIO_meth_free(methods_async);
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}
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Reference in New Issue
Block a user