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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 "internal/quic_tserver.h"
#include "internal/quic_channel.h"
#include "internal/quic_statm.h"
#include "internal/common.h"
/*
* QUIC Test Server Module
* =======================
*/
struct quic_tserver_st {
QUIC_TSERVER_ARGS args;
/*
* The QUIC channel providing the core QUIC connection implementation.
*/
QUIC_CHANNEL *ch;
/* The mutex we give to the QUIC channel. */
CRYPTO_MUTEX *mutex;
/* SSL_CTX for creating the underlying TLS connection */
SSL_CTX *ctx;
/* SSL for the underlying TLS connection */
SSL *tls;
/* The current peer L4 address. AF_UNSPEC if we do not have a peer yet. */
BIO_ADDR cur_peer_addr;
/* Are we connected to a peer? */
unsigned int connected : 1;
};
static int alpn_select_cb(SSL *ssl, const unsigned char **out,
unsigned char *outlen, const unsigned char *in,
unsigned int inlen, void *arg)
{
static const unsigned char alpn[] = { 8, 'o', 's', 's', 'l', 't', 'e', 's', 't' };
if (SSL_select_next_proto((unsigned char **)out, outlen, alpn, sizeof(alpn),
in, inlen) != OPENSSL_NPN_NEGOTIATED)
return SSL_TLSEXT_ERR_ALERT_FATAL;
return SSL_TLSEXT_ERR_OK;
}
QUIC_TSERVER *ossl_quic_tserver_new(const QUIC_TSERVER_ARGS *args,
const char *certfile, const char *keyfile)
{
QUIC_TSERVER *srv = NULL;
QUIC_CHANNEL_ARGS ch_args = {0};
if (args->net_rbio == NULL || args->net_wbio == NULL)
goto err;
if ((srv = OPENSSL_zalloc(sizeof(*srv))) == NULL)
goto err;
srv->args = *args;
if ((srv->mutex = ossl_crypto_mutex_new()) == NULL)
goto err;
srv->ctx = SSL_CTX_new_ex(srv->args.libctx, srv->args.propq, TLS_method());
if (srv->ctx == NULL)
goto err;
if (SSL_CTX_use_certificate_file(srv->ctx, certfile, SSL_FILETYPE_PEM) <= 0)
goto err;
if (SSL_CTX_use_PrivateKey_file(srv->ctx, keyfile, SSL_FILETYPE_PEM) <= 0)
goto err;
SSL_CTX_set_alpn_select_cb(srv->ctx, alpn_select_cb, srv);
srv->tls = SSL_new(srv->ctx);
if (srv->tls == NULL)
goto err;
ch_args.libctx = srv->args.libctx;
ch_args.propq = srv->args.propq;
ch_args.tls = srv->tls;
ch_args.mutex = srv->mutex;
ch_args.is_server = 1;
ch_args.now_cb = srv->args.now_cb;
ch_args.now_cb_arg = srv->args.now_cb_arg;
if ((srv->ch = ossl_quic_channel_new(&ch_args)) == NULL)
goto err;
if (!ossl_quic_channel_set_net_rbio(srv->ch, srv->args.net_rbio)
|| !ossl_quic_channel_set_net_wbio(srv->ch, srv->args.net_wbio))
goto err;
return srv;
err:
if (srv != NULL) {
ossl_quic_channel_free(srv->ch);
ossl_crypto_mutex_free(&srv->mutex);
}
OPENSSL_free(srv);
return NULL;
}
void ossl_quic_tserver_free(QUIC_TSERVER *srv)
{
if (srv == NULL)
return;
ossl_quic_channel_free(srv->ch);
BIO_free(srv->args.net_rbio);
BIO_free(srv->args.net_wbio);
SSL_free(srv->tls);
SSL_CTX_free(srv->ctx);
ossl_crypto_mutex_free(&srv->mutex);
OPENSSL_free(srv);
}
/* Set mutator callbacks for test framework support */
int ossl_quic_tserver_set_plain_packet_mutator(QUIC_TSERVER *srv,
ossl_mutate_packet_cb mutatecb,
ossl_finish_mutate_cb finishmutatecb,
void *mutatearg)
{
return ossl_quic_channel_set_mutator(srv->ch, mutatecb, finishmutatecb,
mutatearg);
}
int ossl_quic_tserver_set_handshake_mutator(QUIC_TSERVER *srv,
ossl_statem_mutate_handshake_cb mutate_handshake_cb,
ossl_statem_finish_mutate_handshake_cb finish_mutate_handshake_cb,
void *mutatearg)
{
return ossl_statem_set_mutator(ossl_quic_channel_get0_ssl(srv->ch),
mutate_handshake_cb,
finish_mutate_handshake_cb,
mutatearg);
}
int ossl_quic_tserver_tick(QUIC_TSERVER *srv)
{
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(srv->ch), 0);
if (ossl_quic_channel_is_active(srv->ch))
srv->connected = 1;
return 1;
}
int ossl_quic_tserver_is_connected(QUIC_TSERVER *srv)
{
return ossl_quic_channel_is_active(srv->ch);
}
/* Returns 1 if the server is in any terminating or terminated state */
int ossl_quic_tserver_is_term_any(const QUIC_TSERVER *srv)
{
return ossl_quic_channel_is_term_any(srv->ch);
}
const QUIC_TERMINATE_CAUSE *
ossl_quic_tserver_get_terminate_cause(const QUIC_TSERVER *srv)
{
return ossl_quic_channel_get_terminate_cause(srv->ch);
}
/* Returns 1 if the server is in a terminated state */
int ossl_quic_tserver_is_terminated(const QUIC_TSERVER *srv)
{
return ossl_quic_channel_is_terminated(srv->ch);
}
int ossl_quic_tserver_is_handshake_confirmed(const QUIC_TSERVER *srv)
{
return ossl_quic_channel_is_handshake_confirmed(srv->ch);
}
int ossl_quic_tserver_read(QUIC_TSERVER *srv,
uint64_t stream_id,
unsigned char *buf,
size_t buf_len,
size_t *bytes_read)
{
int is_fin = 0;
QUIC_STREAM *qs;
if (!ossl_quic_channel_is_active(srv->ch))
return 0;
qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(srv->ch),
stream_id);
if (qs == NULL) {
int is_client_init
= ((stream_id & QUIC_STREAM_INITIATOR_MASK)
== QUIC_STREAM_INITIATOR_CLIENT);
/*
* A client-initiated stream might spontaneously come into existence, so
* allow trying to read on a client-initiated stream before it exists.
* Otherwise, fail.
*/
if (!is_client_init)
return 0;
*bytes_read = 0;
return 1;
}
if (qs->recv_fin_retired || qs->rstream == NULL)
return 0;
if (!ossl_quic_rstream_read(qs->rstream, buf, buf_len,
bytes_read, &is_fin))
return 0;
if (*bytes_read > 0) {
/*
* We have read at least one byte from the stream. Inform stream-level
* RXFC of the retirement of controlled bytes. Update the active stream
* status (the RXFC may now want to emit a frame granting more credit to
* the peer).
*/
OSSL_RTT_INFO rtt_info;
ossl_statm_get_rtt_info(ossl_quic_channel_get_statm(srv->ch), &rtt_info);
if (!ossl_quic_rxfc_on_retire(&qs->rxfc, *bytes_read,
rtt_info.smoothed_rtt))
return 0;
}
if (is_fin)
qs->recv_fin_retired = 1;
if (*bytes_read > 0)
ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(srv->ch), qs);
return 1;
}
int ossl_quic_tserver_has_read_ended(QUIC_TSERVER *srv, uint64_t stream_id)
{
QUIC_STREAM *qs;
unsigned char buf[1];
size_t bytes_read = 0;
int is_fin = 0;
qs = ossl_quic_stream_map_get_by_id(ossl_quic_channel_get_qsm(srv->ch),
stream_id);
if (qs == NULL || qs->rstream == NULL)
return 0;
if (qs->recv_fin_retired)
return 1;
/*
* If we do not have recv_fin_retired, it is possible we shou
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