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/* $OpenBSD: tls13_quic.c,v 1.8 2024/09/09 03:55:55 tb Exp $ */
/*
* Copyright (c) 2022 Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "ssl_local.h"
#include "tls13_internal.h"
static ssize_t
tls13_quic_wire_read_cb(void *buf, size_t n, void *arg)
{
struct tls13_ctx *ctx = arg;
SSL *ssl = ctx->ssl;
SSLerror(ssl, SSL_R_QUIC_INTERNAL_ERROR);
return TLS13_IO_FAILURE;
}
static ssize_t
tls13_quic_wire_write_cb(const void *buf, size_t n, void *arg)
{
struct tls13_ctx *ctx = arg;
SSL *ssl = ctx->ssl;
SSLerror(ssl, SSL_R_QUIC_INTERNAL_ERROR);
return TLS13_IO_FAILURE;
}
static ssize_t
tls13_quic_wire_flush_cb(void *arg)
{
struct tls13_ctx *ctx = arg;
SSL *ssl = ctx->ssl;
if (!ssl->quic_method->flush_flight(ssl)) {
SSLerror(ssl, SSL_R_QUIC_INTERNAL_ERROR);
return TLS13_IO_FAILURE;
}
return TLS13_IO_SUCCESS;
}
static ssize_t
tls13_quic_handshake_read_cb(void *buf, size_t n, void *arg)
{
struct tls13_ctx *ctx = arg;
if (ctx->hs->tls13.quic_read_buffer == NULL)
return TLS13_IO_WANT_POLLIN;
return tls_buffer_read(ctx->hs->tls13.quic_read_buffer, buf, n);
}
static ssize_t
tls13_quic_handshake_write_cb(const void *buf, size_t n, void *arg)
{
struct tls13_ctx *ctx = arg;
SSL *ssl = ctx->ssl;
if (!ssl->quic_method->add_handshake_data(ssl,
ctx->hs->tls13.quic_write_level, buf, n)) {
SSLerror(ssl, SSL_R_QUIC_INTERNAL_ERROR);
return TLS13_IO_FAILURE;
}
return n;
}
static int
tls13_quic_set_read_traffic_key(struct tls13_secret *read_key,
enum ssl_encryption_level_t read_level, void *arg)
{
struct tls13_ctx *ctx = arg;
SSL *ssl = ctx->ssl;
ctx->hs->tls13.quic_read_level = read_level;
/* Handle both the new (BoringSSL) and old (quictls) APIs. */
if (ssl->quic_method->set_read_secret != NULL)
return ssl->quic_method->set_read_secret(ssl,
ctx->hs->tls13.quic_read_level, ctx->hs->cipher,
read_key->data, read_key->len);
if (ssl->quic_method->set_encryption_secrets != NULL)
return ssl->quic_method->set_encryption_secrets(ssl,
ctx->hs->tls13.quic_read_level, read_key->data, NULL,
read_key->len);
return 0;
}
static int
tls13_quic_set_write_traffic_key(struct tls13_secret *write_key,
enum ssl_encryption_level_t write_level, void *arg)
{
struct tls13_ctx *ctx = arg;
SSL *ssl = ctx->ssl;
ctx->hs->tls13.quic_write_level = write_level;
/* Handle both the new (BoringSSL) and old (quictls) APIs. */
if (ssl->quic_method->set_write_secret != NULL)
return ssl->quic_method->set_write_secret(ssl,
ctx->hs->tls13.quic_write_level, ctx->hs->cipher,
write_key->data, write_key->len);
if (ssl->quic_method->set_encryption_secrets != NULL)
return ssl->quic_method->set_encryption_secrets(ssl,
ctx->hs->tls13.quic_write_level, NULL, write_key->data,
write_key->len);
return 0;
}
static int
tls13_quic_alert_send_cb(int alert_desc, void *arg)
{
struct tls13_ctx *ctx = arg;
SSL *ssl = ctx->ssl;
uint8_t alert_level = TLS13_ALERT_LEVEL_FATAL;
int ret = TLS13_IO_ALERT;
if (!ssl->quic_method->send_alert(ssl, ctx->hs->tls13.quic_write_level,
alert_desc)) {
SSLerror(ssl, SSL_R_QUIC_INTERNAL_ERROR);
return TLS13_IO_FAILURE;
}
if (alert_desc == TLS13_ALERT_CLOSE_NOTIFY ||
alert_desc == TLS13_ALERT_USER_CANCELED) {
alert_level = TLS13_ALERT_LEVEL_WARNING;
ret = TLS13_IO_SUCCESS;
}
tls13_record_layer_alert_sent(ctx->rl, alert_level, alert_desc);
return ret;
}
static const struct tls13_record_layer_callbacks quic_rl_callbacks = {
.wire_read = tls13_quic_wire_read_cb,
.wire_write = tls13_quic_wire_write_cb,
.wire_flush = tls13_quic_wire_flush_cb,
.handshake_read = tls13_quic_handshake_read_cb,
.handshake_write = tls13_quic_handshake_write_cb,
.set_read_traffic_key = tls13_quic_set_read_traffic_key,
.set_write_traffic_key = tls13_quic_set_write_traffic_key,
.alert_send = tls13_quic_alert_send_cb,
.alert_recv = tls13_alert_received_cb,
.alert_sent = tls13_alert_sent_cb,
.phh_recv = tls13_phh_received_cb,
.phh_sent = tls13_phh_done_cb,
};
int
tls13_quic_init(struct tls13_ctx *ctx)
{
BIO *bio;
tls13_record_layer_set_callbacks(ctx->rl, &quic_rl_callbacks, ctx);
ctx->middlebox_compat = 0;
/*
* QUIC does not use BIOs, however we currently expect a BIO to exist
* for status handling.
*/
if ((bio = BIO_new(BIO_s_null())) == NULL)
return 0;
SSL_set_bio(ctx->ssl, bio, bio);
bio = NULL;
return 1;
}
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