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5129e59494
Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/20348)
1494 lines
41 KiB
C
1494 lines
41 KiB
C
/*
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* Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <openssl/macros.h>
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#include <openssl/objects.h>
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#include <openssl/sslerr.h>
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#include <crypto/rand.h>
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#include "quic_local.h"
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#include "internal/quic_tls.h"
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#include "internal/quic_rx_depack.h"
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#include "internal/quic_error.h"
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#include "internal/time.h"
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static void aon_write_finish(QUIC_CONNECTION *qc);
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static int ensure_channel(QUIC_CONNECTION *qc);
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/*
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* QUIC Front-End I/O API: Common Utilities
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* ========================================
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*/
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/*
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* Block until a predicate is met.
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*
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* Precondition: Must have a channel.
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* Precondition: Must hold channel lock (unchecked).
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*/
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QUIC_NEEDS_LOCK
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static int block_until_pred(QUIC_CONNECTION *qc,
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int (*pred)(void *arg), void *pred_arg,
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uint32_t flags)
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{
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QUIC_REACTOR *rtor;
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assert(qc->ch != NULL);
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rtor = ossl_quic_channel_get_reactor(qc->ch);
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return ossl_quic_reactor_block_until_pred(rtor, pred, pred_arg, flags,
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qc->mutex);
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}
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/*
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* Raise a 'normal' error, meaning one that can be reported via SSL_get_error()
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* rather than via ERR.
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*/
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static int quic_raise_normal_error(QUIC_CONNECTION *qc,
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int err)
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{
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qc->last_error = err;
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return 0;
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}
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/*
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* Raise a 'non-normal' error, meaning any error that is not reported via
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* SSL_get_error() and must be reported via ERR.
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*/
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static int quic_raise_non_normal_error(QUIC_CONNECTION *qc,
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const char *file,
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int line,
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const char *func,
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int reason,
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const char *fmt,
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...)
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{
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va_list args;
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ERR_new();
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ERR_set_debug(file, line, func);
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va_start(args, fmt);
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ERR_vset_error(ERR_LIB_SSL, reason, fmt, args);
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va_end(args);
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qc->last_error = SSL_ERROR_SSL;
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return 0;
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}
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#define QUIC_RAISE_NORMAL_ERROR(qc, err) \
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quic_raise_normal_error((qc), (err))
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#define QUIC_RAISE_NON_NORMAL_ERROR(qc, reason, msg) \
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quic_raise_non_normal_error((qc), \
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OPENSSL_FILE, OPENSSL_LINE, \
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OPENSSL_FUNC, \
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(reason), \
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(msg))
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/*
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* Should be called at entry of every public function to confirm we have a valid
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* QUIC_CONNECTION.
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*/
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static ossl_inline int expect_quic_conn(const QUIC_CONNECTION *qc)
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{
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if (!ossl_assert(qc != NULL))
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return QUIC_RAISE_NON_NORMAL_ERROR(NULL, ERR_R_INTERNAL_ERROR, NULL);
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return 1;
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}
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/*
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* Ensures that the channel mutex is held for a method which touches channel
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* state.
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*
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* Precondition: Channel mutex is not held (unchecked)
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*/
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static void quic_lock(QUIC_CONNECTION *qc)
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{
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ossl_crypto_mutex_lock(qc->mutex);
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}
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/* Precondition: Channel mutex is held (unchecked) */
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QUIC_NEEDS_LOCK
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static void quic_unlock(QUIC_CONNECTION *qc)
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{
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ossl_crypto_mutex_unlock(qc->mutex);
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}
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/*
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* QUIC Front-End I/O API: Initialization
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* ======================================
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*
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* SSL_new => ossl_quic_new
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* ossl_quic_init
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* SSL_reset => ossl_quic_reset
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* SSL_clear => ossl_quic_clear
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* ossl_quic_deinit
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* SSL_free => ossl_quic_free
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*
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*/
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/* SSL_new */
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SSL *ossl_quic_new(SSL_CTX *ctx)
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{
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QUIC_CONNECTION *qc = NULL;
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SSL *ssl_base = NULL;
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SSL_CONNECTION *sc = NULL;
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qc = OPENSSL_zalloc(sizeof(*qc));
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if (qc == NULL)
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goto err;
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/* Initialise the QUIC_CONNECTION's stub header. */
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ssl_base = &qc->ssl;
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if (!ossl_ssl_init(ssl_base, ctx, ctx->method, SSL_TYPE_QUIC_CONNECTION)) {
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ssl_base = NULL;
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goto err;
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}
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qc->tls = ossl_ssl_connection_new_int(ctx, TLS_method());
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if (qc->tls == NULL || (sc = SSL_CONNECTION_FROM_SSL(qc->tls)) == NULL)
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goto err;
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if ((qc->mutex = ossl_crypto_mutex_new()) == NULL)
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goto err;
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qc->is_thread_assisted
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= (ssl_base->method == OSSL_QUIC_client_thread_method());
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/* Channel is not created yet. */
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qc->ssl_mode = qc->ssl.ctx->mode;
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qc->last_error = SSL_ERROR_NONE;
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qc->blocking = 1;
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return ssl_base;
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err:
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SSL_free(qc->tls);
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OPENSSL_free(qc);
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return NULL;
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}
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/* SSL_free */
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QUIC_TAKES_LOCK
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void ossl_quic_free(SSL *s)
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{
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QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
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/* We should never be called on anything but a QUIC_CONNECTION. */
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if (!expect_quic_conn(qc))
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return;
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quic_lock(qc);
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if (qc->is_thread_assisted && qc->started) {
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ossl_quic_thread_assist_wait_stopped(&qc->thread_assist);
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ossl_quic_thread_assist_cleanup(&qc->thread_assist);
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}
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ossl_quic_channel_free(qc->ch);
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BIO_free(qc->net_rbio);
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BIO_free(qc->net_wbio);
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/* Note: SSL_free calls OPENSSL_free(qc) for us */
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SSL_free(qc->tls);
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ossl_crypto_mutex_free(&qc->mutex); /* freed while still locked */
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}
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/* SSL method init */
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int ossl_quic_init(SSL *s)
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{
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QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
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if (!expect_quic_conn(qc))
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return 0;
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/* Same op as SSL_clear, forward the call. */
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return ossl_quic_clear(s);
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}
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/* SSL method deinit */
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void ossl_quic_deinit(SSL *s)
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{
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/* No-op. */
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}
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/* SSL_reset */
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int ossl_quic_reset(SSL *s)
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{
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QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
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if (!expect_quic_conn(qc))
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return 0;
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/* TODO(QUIC); Currently a no-op. */
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return 1;
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}
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/* SSL_clear */
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int ossl_quic_clear(SSL *s)
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{
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QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
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if (!expect_quic_conn(qc))
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return 0;
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/* TODO(QUIC): Currently a no-op. */
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return 1;
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}
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void ossl_quic_conn_set_override_now_cb(SSL *s,
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OSSL_TIME (*now_cb)(void *arg),
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void *now_cb_arg)
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{
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QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
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qc->override_now_cb = now_cb;
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qc->override_now_cb_arg = now_cb_arg;
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}
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void ossl_quic_conn_force_assist_thread_wake(SSL *s)
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{
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QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
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if (qc->is_thread_assisted && qc->started)
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ossl_quic_thread_assist_notify_deadline_changed(&qc->thread_assist);
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}
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/*
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* QUIC Front-End I/O API: Network BIO Configuration
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* =================================================
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*
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* Handling the different BIOs is difficult:
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*
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* - It is more or less a requirement that we use non-blocking network I/O;
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* we need to be able to have timeouts on recv() calls, and make best effort
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* (non blocking) send() and recv() calls.
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*
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* The only sensible way to do this is to configure the socket into
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* non-blocking mode. We could try to do select() before calling send() or
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* recv() to get a guarantee that the call will not block, but this will
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* probably run into issues with buggy OSes which generate spurious socket
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* readiness events. In any case, relying on this to work reliably does not
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* seem sane.
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*
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* Timeouts could be handled via setsockopt() socket timeout options, but
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* this depends on OS support and adds another syscall to every network I/O
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* operation. It also has obvious thread safety concerns if we want to move
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* to concurrent use of a single socket at some later date.
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*
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* Some OSes support a MSG_DONTWAIT flag which allows a single I/O option to
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* be made non-blocking. However some OSes (e.g. Windows) do not support
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* this, so we cannot rely on this.
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*
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* As such, we need to configure any FD in non-blocking mode. This may
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* confound users who pass a blocking socket to libssl. However, in practice
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* it would be extremely strange for a user of QUIC to pass an FD to us,
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* then also try and send receive traffic on the same socket(!). Thus the
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* impact of this should be limited, and can be documented.
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*
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* - We support both blocking and non-blocking operation in terms of the API
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* presented to the user. One prospect is to set the blocking mode based on
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* whether the socket passed to us was already in blocking mode. However,
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* Windows has no API for determining if a socket is in blocking mode (!),
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* therefore this cannot be done portably. Currently therefore we expose an
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* explicit API call to set this, and default to blocking mode.
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*
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* - We need to determine our initial destination UDP address. The "natural"
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* way for a user to do this is to set the peer variable on a BIO_dgram.
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* However, this has problems because BIO_dgram's peer variable is used for
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* both transmission and reception. This means it can be constantly being
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* changed to a malicious value (e.g. if some random unrelated entity on the
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* network starts sending traffic to us) on every read call. This is not a
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* direct issue because we use the 'stateless' BIO_sendmmsg and BIO_recvmmsg
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* calls only, which do not use this variable. However, we do need to let
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* the user specify the peer in a 'normal' manner. The compromise here is
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* that we grab the current peer value set at the time the write BIO is set
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* and do not read the value again.
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*
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* - We also need to support memory BIOs (e.g. BIO_dgram_pair) or custom BIOs.
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* Currently we do this by only supporting non-blocking mode.
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*
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*/
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/*
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* Determines what initial destination UDP address we should use, if possible.
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* If this fails the client must set the destination address manually, or use a
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* BIO which does not need a destination address.
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*/
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static int csm_analyse_init_peer_addr(BIO *net_wbio, BIO_ADDR *peer)
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{
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if (BIO_dgram_get_peer(net_wbio, peer) <= 0)
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return 0;
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return 1;
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}
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void ossl_quic_conn_set0_net_rbio(QUIC_CONNECTION *qc, BIO *net_rbio)
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{
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if (qc->net_rbio == net_rbio)
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return;
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if (qc->ch != NULL && !ossl_quic_channel_set_net_rbio(qc->ch, net_rbio))
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return;
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BIO_free(qc->net_rbio);
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qc->net_rbio = net_rbio;
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/*
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* If what we have is not pollable (e.g. a BIO_dgram_pair) disable blocking
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* mode as we do not support it for non-pollable BIOs.
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*/
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if (net_rbio != NULL) {
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BIO_POLL_DESCRIPTOR d = {0};
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if (!BIO_get_rpoll_descriptor(net_rbio, &d)
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|| d.type != BIO_POLL_DESCRIPTOR_TYPE_SOCK_FD) {
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qc->blocking = 0;
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qc->can_poll_net_rbio = 0;
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} else {
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qc->can_poll_net_rbio = 1;
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}
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}
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}
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void ossl_quic_conn_set0_net_wbio(QUIC_CONNECTION *qc, BIO *net_wbio)
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{
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if (qc->net_wbio == net_wbio)
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return;
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if (qc->ch != NULL && !ossl_quic_channel_set_net_wbio(qc->ch, net_wbio))
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return;
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BIO_free(qc->net_wbio);
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qc->net_wbio = net_wbio;
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if (net_wbio != NULL) {
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BIO_POLL_DESCRIPTOR d = {0};
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if (!BIO_get_wpoll_descriptor(net_wbio, &d)
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|| d.type != BIO_POLL_DESCRIPTOR_TYPE_SOCK_FD) {
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qc->blocking = 0;
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qc->can_poll_net_wbio = 0;
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} else {
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qc->can_poll_net_wbio = 1;
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}
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/*
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* If we do not have a peer address yet, and we have not started trying
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* to connect yet, try to autodetect one.
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*/
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if (BIO_ADDR_family(&qc->init_peer_addr) == AF_UNSPEC
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&& !qc->started) {
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if (!csm_analyse_init_peer_addr(net_wbio, &qc->init_peer_addr))
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/* best effort */
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BIO_ADDR_clear(&qc->init_peer_addr);
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if (qc->ch != NULL)
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ossl_quic_channel_set_peer_addr(qc->ch, &qc->init_peer_addr);
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}
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}
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}
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BIO *ossl_quic_conn_get_net_rbio(const QUIC_CONNECTION *qc)
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{
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return qc->net_rbio;
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}
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BIO *ossl_quic_conn_get_net_wbio(const QUIC_CONNECTION *qc)
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{
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return qc->net_wbio;
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}
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int ossl_quic_conn_get_blocking_mode(const QUIC_CONNECTION *qc)
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{
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return qc->blocking;
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}
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int ossl_quic_conn_set_blocking_mode(QUIC_CONNECTION *qc, int blocking)
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{
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/* Cannot enable blocking mode if we do not have pollable FDs. */
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if (blocking != 0 &&
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(!qc->can_poll_net_rbio || !qc->can_poll_net_wbio))
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return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_UNSUPPORTED, NULL);
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qc->blocking = (blocking != 0);
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return 1;
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}
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int ossl_quic_conn_set_initial_peer_addr(QUIC_CONNECTION *qc,
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const BIO_ADDR *peer_addr)
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{
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if (qc->started)
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return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
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NULL);
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if (peer_addr == NULL) {
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BIO_ADDR_clear(&qc->init_peer_addr);
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return 1;
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}
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qc->init_peer_addr = *peer_addr;
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return 1;
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}
|
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|
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/*
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* QUIC Front-End I/O API: Asynchronous I/O Management
|
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* ===================================================
|
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*
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* (BIO/)SSL_tick => ossl_quic_tick
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* (BIO/)SSL_get_tick_timeout => ossl_quic_get_tick_timeout
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* (BIO/)SSL_get_poll_fd => ossl_quic_get_poll_fd
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*
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*/
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|
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/* Returns 1 if the connection is being used in blocking mode. */
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static int blocking_mode(const QUIC_CONNECTION *qc)
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{
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return qc->blocking;
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}
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|
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/* SSL_tick; ticks the reactor. */
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QUIC_TAKES_LOCK
|
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int ossl_quic_tick(QUIC_CONNECTION *qc)
|
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{
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quic_lock(qc);
|
|
|
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if (qc->ch == NULL) {
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quic_unlock(qc);
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return 1;
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}
|
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|
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ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(qc->ch), 0);
|
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quic_unlock(qc);
|
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return 1;
|
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}
|
|
|
|
/*
|
|
* SSL_get_tick_timeout. Get the time in milliseconds until the SSL object
|
|
* should be ticked by the application by calling SSL_tick(). tv is set to 0 if
|
|
* the object should be ticked immediately and tv->tv_sec is set to -1 if no
|
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* timeout is currently active.
|
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*/
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QUIC_TAKES_LOCK
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int ossl_quic_get_tick_timeout(QUIC_CONNECTION *qc, struct timeval *tv)
|
|
{
|
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OSSL_TIME deadline = ossl_time_infinite();
|
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|
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quic_lock(qc);
|
|
|
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if (qc->ch != NULL)
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deadline
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= ossl_quic_reactor_get_tick_deadline(ossl_quic_channel_get_reactor(qc->ch));
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|
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if (ossl_time_is_infinite(deadline)) {
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tv->tv_sec = -1;
|
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tv->tv_usec = 0;
|
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quic_unlock(qc);
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return 1;
|
|
}
|
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|
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*tv = ossl_time_to_timeval(ossl_time_subtract(deadline, ossl_time_now()));
|
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quic_unlock(qc);
|
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return 1;
|
|
}
|
|
|
|
/* SSL_get_rpoll_descriptor */
|
|
int ossl_quic_get_rpoll_descriptor(QUIC_CONNECTION *qc, BIO_POLL_DESCRIPTOR *desc)
|
|
{
|
|
if (desc == NULL || qc->net_rbio == NULL)
|
|
return 0;
|
|
|
|
return BIO_get_rpoll_descriptor(qc->net_rbio, desc);
|
|
}
|
|
|
|
/* SSL_get_wpoll_descriptor */
|
|
int ossl_quic_get_wpoll_descriptor(QUIC_CONNECTION *qc, BIO_POLL_DESCRIPTOR *desc)
|
|
{
|
|
if (desc == NULL || qc->net_wbio == NULL)
|
|
return 0;
|
|
|
|
return BIO_get_wpoll_descriptor(qc->net_wbio, desc);
|
|
}
|
|
|
|
/* SSL_net_read_desired */
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_get_net_read_desired(QUIC_CONNECTION *qc)
|
|
{
|
|
int ret;
|
|
|
|
quic_lock(qc);
|
|
|
|
if (qc->ch == NULL) {
|
|
quic_unlock(qc);
|
|
return 0;
|
|
}
|
|
|
|
ret = ossl_quic_reactor_net_read_desired(ossl_quic_channel_get_reactor(qc->ch));
|
|
quic_unlock(qc);
|
|
return ret;
|
|
}
|
|
|
|
/* SSL_net_write_desired */
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_get_net_write_desired(QUIC_CONNECTION *qc)
|
|
{
|
|
int ret;
|
|
|
|
quic_lock(qc);
|
|
|
|
if (qc->ch == NULL) {
|
|
quic_unlock(qc);
|
|
return 0;
|
|
}
|
|
|
|
ret = ossl_quic_reactor_net_write_desired(ossl_quic_channel_get_reactor(qc->ch));
|
|
quic_unlock(qc);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: Connection Lifecycle Operations
|
|
* =======================================================
|
|
*
|
|
* SSL_do_handshake => ossl_quic_do_handshake
|
|
* SSL_set_connect_state => ossl_quic_set_connect_state
|
|
* SSL_set_accept_state => ossl_quic_set_accept_state
|
|
* SSL_shutdown => ossl_quic_shutdown
|
|
* SSL_ctrl => ossl_quic_ctrl
|
|
* (BIO/)SSL_connect => ossl_quic_connect
|
|
* (BIO/)SSL_accept => ossl_quic_accept
|
|
*
|
|
*/
|
|
|
|
/* SSL_shutdown */
|
|
static int quic_shutdown_wait(void *arg)
|
|
{
|
|
QUIC_CONNECTION *qc = arg;
|
|
|
|
return qc->ch == NULL || ossl_quic_channel_is_terminated(qc->ch);
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_conn_shutdown(QUIC_CONNECTION *qc, uint64_t flags,
|
|
const SSL_SHUTDOWN_EX_ARGS *args,
|
|
size_t args_len)
|
|
{
|
|
int ret;
|
|
|
|
quic_lock(qc);
|
|
|
|
if (!ensure_channel(qc)) {
|
|
quic_unlock(qc);
|
|
return -1;
|
|
}
|
|
|
|
ossl_quic_channel_local_close(qc->ch,
|
|
args != NULL ? args->quic_error_code : 0);
|
|
|
|
/* TODO(QUIC): !SSL_SHUTDOWN_FLAG_NO_STREAM_FLUSH */
|
|
|
|
if (ossl_quic_channel_is_terminated(qc->ch)) {
|
|
quic_unlock(qc);
|
|
return 1;
|
|
}
|
|
|
|
if (blocking_mode(qc) && (flags & SSL_SHUTDOWN_FLAG_RAPID) == 0)
|
|
block_until_pred(qc, quic_shutdown_wait, qc, 0);
|
|
else
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(qc->ch), 0);
|
|
|
|
ret = ossl_quic_channel_is_terminated(qc->ch);
|
|
quic_unlock(qc);
|
|
return ret;
|
|
}
|
|
|
|
/* SSL_ctrl */
|
|
long ossl_quic_ctrl(SSL *s, int cmd, long larg, void *parg)
|
|
{
|
|
QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
|
|
|
|
if (!expect_quic_conn(qc))
|
|
return 0;
|
|
|
|
switch (cmd) {
|
|
case SSL_CTRL_MODE:
|
|
/* Cannot enable EPW while AON write in progress. */
|
|
if (qc->aon_write_in_progress)
|
|
larg &= ~SSL_MODE_ENABLE_PARTIAL_WRITE;
|
|
|
|
qc->ssl_mode |= (uint32_t)larg;
|
|
return qc->ssl_mode;
|
|
case SSL_CTRL_CLEAR_MODE:
|
|
qc->ssl_mode &= ~(uint32_t)larg;
|
|
return qc->ssl_mode;
|
|
default:
|
|
/* Probably a TLS related ctrl. Defer to our internal SSL object */
|
|
return SSL_ctrl(qc->tls, cmd, larg, parg);
|
|
}
|
|
}
|
|
|
|
/* SSL_set_connect_state */
|
|
void ossl_quic_set_connect_state(QUIC_CONNECTION *qc)
|
|
{
|
|
/* Cannot be changed after handshake started */
|
|
if (qc->started)
|
|
return;
|
|
|
|
qc->as_server = 0;
|
|
}
|
|
|
|
/* SSL_set_accept_state */
|
|
void ossl_quic_set_accept_state(QUIC_CONNECTION *qc)
|
|
{
|
|
/* Cannot be changed after handshake started */
|
|
if (qc->started)
|
|
return;
|
|
|
|
qc->as_server = 1;
|
|
}
|
|
|
|
/* SSL_do_handshake */
|
|
struct quic_handshake_wait_args {
|
|
QUIC_CONNECTION *qc;
|
|
};
|
|
|
|
static int quic_handshake_wait(void *arg)
|
|
{
|
|
struct quic_handshake_wait_args *args = arg;
|
|
|
|
if (!ossl_quic_channel_is_active(args->qc->ch))
|
|
return -1;
|
|
|
|
if (ossl_quic_channel_is_handshake_complete(args->qc->ch))
|
|
return 1;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int configure_channel(QUIC_CONNECTION *qc)
|
|
{
|
|
assert(qc->ch != NULL);
|
|
|
|
if (!ossl_quic_channel_set_net_rbio(qc->ch, qc->net_rbio)
|
|
|| !ossl_quic_channel_set_net_wbio(qc->ch, qc->net_wbio)
|
|
|| !ossl_quic_channel_set_peer_addr(qc->ch, &qc->init_peer_addr))
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int ensure_channel(QUIC_CONNECTION *qc)
|
|
{
|
|
QUIC_CHANNEL_ARGS args = {0};
|
|
|
|
if (qc->ch != NULL)
|
|
return 1;
|
|
|
|
args.libctx = qc->ssl.ctx->libctx;
|
|
args.propq = qc->ssl.ctx->propq;
|
|
args.is_server = 0;
|
|
args.tls = qc->tls;
|
|
args.mutex = qc->mutex;
|
|
args.now_cb = qc->override_now_cb;
|
|
args.now_cb_arg = qc->override_now_cb_arg;
|
|
|
|
qc->ch = ossl_quic_channel_new(&args);
|
|
if (qc->ch == NULL)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Creates a channel and configures it with the information we have accumulated
|
|
* via calls made to us from the application prior to starting a handshake
|
|
* attempt.
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static int ensure_channel_and_start(QUIC_CONNECTION *qc)
|
|
{
|
|
if (!qc->started) {
|
|
if (!ensure_channel(qc))
|
|
return 0;
|
|
|
|
if (!configure_channel(qc)
|
|
|| !ossl_quic_channel_start(qc->ch))
|
|
goto err;
|
|
|
|
qc->stream0 = ossl_quic_channel_get_stream_by_id(qc->ch, 0);
|
|
if (qc->stream0 == NULL)
|
|
goto err;
|
|
|
|
if (qc->is_thread_assisted)
|
|
if (!ossl_quic_thread_assist_init_start(&qc->thread_assist, qc->ch))
|
|
goto err;
|
|
}
|
|
|
|
qc->started = 1;
|
|
return 1;
|
|
|
|
err:
|
|
ossl_quic_channel_free(qc->ch);
|
|
qc->ch = NULL;
|
|
return 0;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_do_handshake(QUIC_CONNECTION *qc)
|
|
{
|
|
int ret;
|
|
|
|
if (qc->ch != NULL && ossl_quic_channel_is_handshake_complete(qc->ch))
|
|
/* Handshake already completed. */
|
|
return 1;
|
|
|
|
if (qc->ch != NULL && ossl_quic_channel_is_term_any(qc->ch))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
|
|
if (BIO_ADDR_family(&qc->init_peer_addr) == AF_UNSPEC) {
|
|
/* Peer address must have been set. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_REMOTE_PEER_ADDRESS_NOT_SET, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
if (qc->as_server) {
|
|
/* TODO(QUIC): Server mode not currently supported */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_PASSED_INVALID_ARGUMENT, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
if (qc->net_rbio == NULL || qc->net_wbio == NULL) {
|
|
/* Need read and write BIOs. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_BIO_NOT_SET, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
/*
|
|
* Start connection process. Note we may come here multiple times in
|
|
* non-blocking mode, which is fine.
|
|
*/
|
|
if (!ensure_channel_and_start(qc)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
if (ossl_quic_channel_is_handshake_complete(qc->ch))
|
|
/* The handshake is now done. */
|
|
return 1;
|
|
|
|
if (blocking_mode(qc)) {
|
|
/* In blocking mode, wait for the handshake to complete. */
|
|
struct quic_handshake_wait_args args;
|
|
|
|
args.qc = qc;
|
|
|
|
ret = block_until_pred(qc, quic_handshake_wait, &args, 0);
|
|
if (!ossl_quic_channel_is_active(qc->ch)) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
return 0; /* Shutdown before completion */
|
|
} else if (ret <= 0) {
|
|
QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
|
|
assert(ossl_quic_channel_is_handshake_complete(qc->ch));
|
|
return 1;
|
|
} else {
|
|
/* Try to advance the reactor. */
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(qc->ch), 0);
|
|
|
|
if (ossl_quic_channel_is_handshake_complete(qc->ch))
|
|
/* The handshake is now done. */
|
|
return 1;
|
|
|
|
/* Otherwise, indicate that the handshake isn't done yet. */
|
|
QUIC_RAISE_NORMAL_ERROR(qc, SSL_ERROR_WANT_READ);
|
|
return -1; /* Non-protocol error */
|
|
}
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_do_handshake(QUIC_CONNECTION *qc)
|
|
{
|
|
int ret;
|
|
|
|
quic_lock(qc);
|
|
|
|
ret = quic_do_handshake(qc);
|
|
quic_unlock(qc);
|
|
return ret;
|
|
}
|
|
|
|
/* SSL_connect */
|
|
int ossl_quic_connect(SSL *s)
|
|
{
|
|
QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
|
|
|
|
if (!expect_quic_conn(qc))
|
|
return 0;
|
|
|
|
/* Ensure we are in connect state (no-op if non-idle). */
|
|
ossl_quic_set_connect_state(qc);
|
|
|
|
/* Begin or continue the handshake */
|
|
return ossl_quic_do_handshake(qc);
|
|
}
|
|
|
|
/* SSL_accept */
|
|
int ossl_quic_accept(SSL *s)
|
|
{
|
|
QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
|
|
|
|
if (!expect_quic_conn(qc))
|
|
return 0;
|
|
|
|
/* Ensure we are in accept state (no-op if non-idle). */
|
|
ossl_quic_set_accept_state(qc);
|
|
|
|
/* Begin or continue the handshake */
|
|
return ossl_quic_do_handshake(qc);
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: Steady-State Operations
|
|
* ===============================================
|
|
*
|
|
* Here we dispatch calls to the steady-state front-end I/O API functions; that
|
|
* is, the functions used during the established phase of a QUIC connection
|
|
* (e.g. SSL_read, SSL_write).
|
|
*
|
|
* Each function must handle both blocking and non-blocking modes. As discussed
|
|
* above, all QUIC I/O is implemented using non-blocking mode internally.
|
|
*
|
|
* SSL_get_error => partially implemented by ossl_quic_get_error
|
|
* (BIO/)SSL_read => ossl_quic_read
|
|
* (BIO/)SSL_write => ossl_quic_write
|
|
* SSL_pending => ossl_quic_pending
|
|
* SSL_stream_conclude => ossl_quic_conn_stream_conclude
|
|
*/
|
|
|
|
/* SSL_get_error */
|
|
int ossl_quic_get_error(const QUIC_CONNECTION *qc, int i)
|
|
{
|
|
return qc->last_error;
|
|
}
|
|
|
|
/*
|
|
* SSL_write
|
|
* ---------
|
|
*
|
|
* The set of functions below provide the implementation of the public SSL_write
|
|
* function. We must handle:
|
|
*
|
|
* - both blocking and non-blocking operation at the application level,
|
|
* depending on how we are configured;
|
|
*
|
|
* - SSL_MODE_ENABLE_PARTIAL_WRITE being on or off;
|
|
*
|
|
* - SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER.
|
|
*
|
|
*/
|
|
QUIC_NEEDS_LOCK
|
|
static void quic_post_write(QUIC_CONNECTION *qc, int did_append, int do_tick)
|
|
{
|
|
/*
|
|
* We have appended at least one byte to the stream.
|
|
* Potentially mark stream as active, depending on FC.
|
|
*/
|
|
if (did_append)
|
|
ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(qc->ch),
|
|
qc->stream0);
|
|
|
|
/*
|
|
* Try and send.
|
|
*
|
|
* TODO(QUIC): It is probably inefficient to try and do this immediately,
|
|
* plus we should eventually consider Nagle's algorithm.
|
|
*/
|
|
if (do_tick)
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(qc->ch), 0);
|
|
}
|
|
|
|
struct quic_write_again_args {
|
|
QUIC_CONNECTION *qc;
|
|
const unsigned char *buf;
|
|
size_t len;
|
|
size_t total_written;
|
|
};
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_again(void *arg)
|
|
{
|
|
struct quic_write_again_args *args = arg;
|
|
size_t actual_written = 0;
|
|
|
|
if (!ossl_quic_channel_is_active(args->qc->ch))
|
|
/* If connection is torn down due to an error while blocking, stop. */
|
|
return -2;
|
|
|
|
if (!ossl_quic_sstream_append(args->qc->stream0->sstream,
|
|
args->buf, args->len, &actual_written))
|
|
return -2;
|
|
|
|
quic_post_write(args->qc, actual_written > 0, 0);
|
|
|
|
args->buf += actual_written;
|
|
args->len -= actual_written;
|
|
args->total_written += actual_written;
|
|
|
|
if (args->len == 0)
|
|
/* Written everything, done. */
|
|
return 1;
|
|
|
|
/* Not written everything yet, keep trying. */
|
|
return 0;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_blocking(QUIC_CONNECTION *qc, const void *buf, size_t len,
|
|
size_t *written)
|
|
{
|
|
int res;
|
|
struct quic_write_again_args args;
|
|
size_t actual_written = 0;
|
|
|
|
/* First make a best effort to append as much of the data as possible. */
|
|
if (!ossl_quic_sstream_append(qc->stream0->sstream, buf, len,
|
|
&actual_written)) {
|
|
/* Stream already finished or allocation error. */
|
|
*written = 0;
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
quic_post_write(qc, actual_written > 0, 1);
|
|
|
|
if (actual_written == len) {
|
|
/* Managed to append everything on the first try. */
|
|
*written = actual_written;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* We did not manage to append all of the data immediately, so the stream
|
|
* buffer has probably filled up. This means we need to block until some of
|
|
* it is freed up.
|
|
*/
|
|
args.qc = qc;
|
|
args.buf = (const unsigned char *)buf + actual_written;
|
|
args.len = len - actual_written;
|
|
args.total_written = 0;
|
|
|
|
res = block_until_pred(qc, quic_write_again, &args, 0);
|
|
if (res <= 0) {
|
|
if (!ossl_quic_channel_is_active(qc->ch))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
else
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
*written = args.total_written;
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* Functions to manage All-or-Nothing (AON) (that is, non-ENABLE_PARTIAL_WRITE)
|
|
* write semantics.
|
|
*/
|
|
static void aon_write_begin(QUIC_CONNECTION *qc, const unsigned char *buf,
|
|
size_t buf_len, size_t already_sent)
|
|
{
|
|
assert(!qc->aon_write_in_progress);
|
|
|
|
qc->aon_write_in_progress = 1;
|
|
qc->aon_buf_base = buf;
|
|
qc->aon_buf_pos = already_sent;
|
|
qc->aon_buf_len = buf_len;
|
|
}
|
|
|
|
static void aon_write_finish(QUIC_CONNECTION *qc)
|
|
{
|
|
qc->aon_write_in_progress = 0;
|
|
qc->aon_buf_base = NULL;
|
|
qc->aon_buf_pos = 0;
|
|
qc->aon_buf_len = 0;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_nonblocking_aon(QUIC_CONNECTION *qc, const void *buf,
|
|
size_t len, size_t *written)
|
|
{
|
|
const void *actual_buf;
|
|
size_t actual_len, actual_written = 0;
|
|
int accept_moving_buffer
|
|
= ((qc->ssl_mode & SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER) != 0);
|
|
|
|
if (qc->aon_write_in_progress) {
|
|
/*
|
|
* We are in the middle of an AON write (i.e., a previous write did not
|
|
* manage to append all data to the SSTREAM and we have Enable Partial
|
|
* Write (EPW) mode disabled.)
|
|
*/
|
|
if ((!accept_moving_buffer && qc->aon_buf_base != buf)
|
|
|| len != qc->aon_buf_len)
|
|
/*
|
|
* Pointer must not have changed if we are not in accept moving
|
|
* buffer mode. Length must never change.
|
|
*/
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_BAD_WRITE_RETRY, NULL);
|
|
|
|
actual_buf = (unsigned char *)buf + qc->aon_buf_pos;
|
|
actual_len = len - qc->aon_buf_pos;
|
|
assert(actual_len > 0);
|
|
} else {
|
|
actual_buf = buf;
|
|
actual_len = len;
|
|
}
|
|
|
|
/* First make a best effort to append as much of the data as possible. */
|
|
if (!ossl_quic_sstream_append(qc->stream0->sstream, actual_buf, actual_len,
|
|
&actual_written)) {
|
|
/* Stream already finished or allocation error. */
|
|
*written = 0;
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
quic_post_write(qc, actual_written > 0, 1);
|
|
|
|
if (actual_written == actual_len) {
|
|
/* We have sent everything. */
|
|
if (qc->aon_write_in_progress) {
|
|
/*
|
|
* We have sent everything, and we were in the middle of an AON
|
|
* write. The output write length is the total length of the AON
|
|
* buffer, not however many bytes we managed to write to the stream
|
|
* in this call.
|
|
*/
|
|
*written = qc->aon_buf_len;
|
|
aon_write_finish(qc);
|
|
} else {
|
|
*written = actual_written;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
if (qc->aon_write_in_progress) {
|
|
/*
|
|
* AON write is in progress but we have not written everything yet. We
|
|
* may have managed to send zero bytes, or some number of bytes less
|
|
* than the total remaining which need to be appended during this
|
|
* AON operation.
|
|
*/
|
|
qc->aon_buf_pos += actual_written;
|
|
assert(qc->aon_buf_pos < qc->aon_buf_len);
|
|
return QUIC_RAISE_NORMAL_ERROR(qc, SSL_ERROR_WANT_WRITE);
|
|
}
|
|
|
|
/*
|
|
* Not in an existing AON operation but partial write is not enabled, so we
|
|
* need to begin a new AON operation. However we needn't bother if we didn't
|
|
* actually append anything.
|
|
*/
|
|
if (actual_written > 0)
|
|
aon_write_begin(qc, buf, len, actual_written);
|
|
|
|
/*
|
|
* AON - We do not publicly admit to having appended anything until AON
|
|
* completes.
|
|
*/
|
|
*written = 0;
|
|
return QUIC_RAISE_NORMAL_ERROR(qc, SSL_ERROR_WANT_WRITE);
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_write_nonblocking_epw(QUIC_CONNECTION *qc, const void *buf, size_t len,
|
|
size_t *written)
|
|
{
|
|
/* Simple best effort operation. */
|
|
if (!ossl_quic_sstream_append(qc->stream0->sstream, buf, len, written)) {
|
|
/* Stream already finished or allocation error. */
|
|
*written = 0;
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
quic_post_write(qc, *written > 0, 1);
|
|
return 1;
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_write(SSL *s, const void *buf, size_t len, size_t *written)
|
|
{
|
|
int ret;
|
|
QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
|
|
int partial_write = ((qc->ssl_mode & SSL_MODE_ENABLE_PARTIAL_WRITE) != 0);
|
|
|
|
*written = 0;
|
|
|
|
if (!expect_quic_conn(qc))
|
|
return 0;
|
|
|
|
quic_lock(qc);
|
|
|
|
if (qc->ch != NULL && ossl_quic_channel_is_term_any(qc->ch)) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
goto out;
|
|
}
|
|
|
|
/*
|
|
* If we haven't finished the handshake, try to advance it.
|
|
* We don't accept writes until the handshake is completed.
|
|
*/
|
|
if (quic_do_handshake(qc) < 1) {
|
|
ret = 0;
|
|
goto out;
|
|
}
|
|
|
|
if (qc->stream0 == NULL || qc->stream0->sstream == NULL) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto out;
|
|
}
|
|
|
|
if (blocking_mode(qc))
|
|
ret = quic_write_blocking(qc, buf, len, written);
|
|
else if (partial_write)
|
|
ret = quic_write_nonblocking_epw(qc, buf, len, written);
|
|
else
|
|
ret = quic_write_nonblocking_aon(qc, buf, len, written);
|
|
|
|
out:
|
|
quic_unlock(qc);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* SSL_read
|
|
* --------
|
|
*/
|
|
struct quic_read_again_args {
|
|
QUIC_CONNECTION *qc;
|
|
QUIC_STREAM *stream;
|
|
void *buf;
|
|
size_t len;
|
|
size_t *bytes_read;
|
|
int peek;
|
|
};
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_read_actual(QUIC_CONNECTION *qc,
|
|
QUIC_STREAM *stream,
|
|
void *buf, size_t buf_len,
|
|
size_t *bytes_read,
|
|
int peek)
|
|
{
|
|
int is_fin = 0;
|
|
|
|
/* If the receive part of the stream is over, issue EOF. */
|
|
if (stream->recv_fin_retired)
|
|
return QUIC_RAISE_NORMAL_ERROR(qc, SSL_ERROR_ZERO_RETURN);
|
|
|
|
if (stream->rstream == NULL)
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
|
|
if (peek) {
|
|
if (!ossl_quic_rstream_peek(stream->rstream, buf, buf_len,
|
|
bytes_read, &is_fin))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
|
|
} else {
|
|
if (!ossl_quic_rstream_read(stream->rstream, buf, buf_len,
|
|
bytes_read, &is_fin))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
if (!peek) {
|
|
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(qc->ch), &rtt_info);
|
|
|
|
if (!ossl_quic_rxfc_on_retire(&qc->stream0->rxfc, *bytes_read,
|
|
rtt_info.smoothed_rtt))
|
|
return QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
}
|
|
|
|
if (is_fin)
|
|
stream->recv_fin_retired = 1;
|
|
|
|
if (*bytes_read > 0)
|
|
ossl_quic_stream_map_update_state(ossl_quic_channel_get_qsm(qc->ch),
|
|
qc->stream0);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
QUIC_NEEDS_LOCK
|
|
static int quic_read_again(void *arg)
|
|
{
|
|
struct quic_read_again_args *args = arg;
|
|
|
|
if (!ossl_quic_channel_is_active(args->qc->ch)) {
|
|
/* If connection is torn down due to an error while blocking, stop. */
|
|
QUIC_RAISE_NON_NORMAL_ERROR(args->qc, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
return -1;
|
|
}
|
|
|
|
if (!quic_read_actual(args->qc, args->stream,
|
|
args->buf, args->len, args->bytes_read,
|
|
args->peek))
|
|
return -1;
|
|
|
|
if (*args->bytes_read > 0)
|
|
/* got at least one byte, the SSL_read op can finish now */
|
|
return 1;
|
|
|
|
return 0; /* did not read anything, keep trying */
|
|
}
|
|
|
|
QUIC_TAKES_LOCK
|
|
static int quic_read(SSL *s, void *buf, size_t len, size_t *bytes_read, int peek)
|
|
{
|
|
int ret, res;
|
|
QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
|
|
struct quic_read_again_args args;
|
|
|
|
*bytes_read = 0;
|
|
|
|
if (!expect_quic_conn(qc))
|
|
return 0;
|
|
|
|
quic_lock(qc);
|
|
|
|
if (qc->ch != NULL && ossl_quic_channel_is_term_any(qc->ch)) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(qc, SSL_R_PROTOCOL_IS_SHUTDOWN, NULL);
|
|
goto out;
|
|
}
|
|
|
|
/* If we haven't finished the handshake, try to advance it. */
|
|
if (quic_do_handshake(qc) < 1) {
|
|
ret = 0; /* ossl_quic_do_handshake raised error here */
|
|
goto out;
|
|
}
|
|
|
|
if (qc->stream0 == NULL) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto out;
|
|
}
|
|
|
|
if (!quic_read_actual(qc, qc->stream0, buf, len, bytes_read, peek)) {
|
|
ret = 0; /* quic_read_actual raised error here */
|
|
goto out;
|
|
}
|
|
|
|
if (*bytes_read > 0) {
|
|
/*
|
|
* Even though we succeeded, tick the reactor here to ensure we are
|
|
* handling other aspects of the QUIC connection.
|
|
*/
|
|
ossl_quic_reactor_tick(ossl_quic_channel_get_reactor(qc->ch), 0);
|
|
ret = 1;
|
|
} else if (blocking_mode(qc)) {
|
|
/*
|
|
* We were not able to read anything immediately, so our stream
|
|
* buffer is empty. This means we need to block until we get
|
|
* at least one byte.
|
|
*/
|
|
args.qc = qc;
|
|
args.stream = qc->stream0;
|
|
args.buf = buf;
|
|
args.len = len;
|
|
args.bytes_read = bytes_read;
|
|
args.peek = peek;
|
|
|
|
res = block_until_pred(qc, quic_read_again, &args, 0);
|
|
if (res == 0) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_INTERNAL_ERROR, NULL);
|
|
goto out;
|
|
} else if (res < 0) {
|
|
ret = 0; /* quic_read_again raised error here */
|
|
goto out;
|
|
}
|
|
|
|
ret = 1;
|
|
} else {
|
|
/* We did not get any bytes and are not in blocking mode. */
|
|
ret = QUIC_RAISE_NORMAL_ERROR(qc, SSL_ERROR_WANT_READ);
|
|
}
|
|
|
|
out:
|
|
quic_unlock(qc);
|
|
return ret;
|
|
}
|
|
|
|
int ossl_quic_read(SSL *s, void *buf, size_t len, size_t *bytes_read)
|
|
{
|
|
return quic_read(s, buf, len, bytes_read, 0);
|
|
}
|
|
|
|
int ossl_quic_peek(SSL *s, void *buf, size_t len, size_t *bytes_read)
|
|
{
|
|
return quic_read(s, buf, len, bytes_read, 1);
|
|
}
|
|
|
|
/*
|
|
* SSL_pending
|
|
* -----------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
static size_t ossl_quic_pending_int(const QUIC_CONNECTION *qc)
|
|
{
|
|
size_t avail = 0;
|
|
int fin = 0;
|
|
|
|
if (!expect_quic_conn(qc))
|
|
return 0;
|
|
|
|
quic_lock((QUIC_CONNECTION *)qc);
|
|
|
|
if (qc->stream0 == NULL || qc->stream0->rstream == NULL)
|
|
/* Cannot raise errors here because we are const, just fail. */
|
|
goto out;
|
|
|
|
if (!ossl_quic_rstream_available(qc->stream0->rstream, &avail, &fin))
|
|
avail = 0;
|
|
|
|
out:
|
|
quic_unlock((QUIC_CONNECTION *)qc);
|
|
return avail;
|
|
}
|
|
|
|
size_t ossl_quic_pending(const SSL *s)
|
|
{
|
|
const QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_CONST_SSL(s);
|
|
|
|
return ossl_quic_pending_int(qc);
|
|
}
|
|
|
|
int ossl_quic_has_pending(const QUIC_CONNECTION *qc)
|
|
{
|
|
return ossl_quic_pending_int(qc) > 0;
|
|
}
|
|
|
|
/*
|
|
* SSL_stream_conclude
|
|
* -------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int ossl_quic_conn_stream_conclude(QUIC_CONNECTION *qc)
|
|
{
|
|
QUIC_STREAM *qs = qc->stream0;
|
|
|
|
quic_lock(qc);
|
|
|
|
if (qs == NULL || qs->sstream == NULL) {
|
|
quic_unlock(qc);
|
|
return 0;
|
|
}
|
|
|
|
if (!ossl_quic_channel_is_active(qc->ch)
|
|
|| ossl_quic_sstream_get_final_size(qs->sstream, NULL)) {
|
|
quic_unlock(qc);
|
|
return 1;
|
|
}
|
|
|
|
ossl_quic_sstream_fin(qs->sstream);
|
|
quic_post_write(qc, 1, 1);
|
|
quic_unlock(qc);
|
|
return 1;
|
|
}
|
|
|
|
/*
|
|
* SSL_inject_net_dgram
|
|
* --------------------
|
|
*/
|
|
QUIC_TAKES_LOCK
|
|
int SSL_inject_net_dgram(SSL *s, const unsigned char *buf,
|
|
size_t buf_len,
|
|
const BIO_ADDR *peer,
|
|
const BIO_ADDR *local)
|
|
{
|
|
int ret;
|
|
QUIC_CONNECTION *qc = QUIC_CONNECTION_FROM_SSL(s);
|
|
QUIC_DEMUX *demux;
|
|
|
|
if (!expect_quic_conn(qc))
|
|
return 0;
|
|
|
|
quic_lock(qc);
|
|
|
|
if (qc->ch == NULL) {
|
|
ret = QUIC_RAISE_NON_NORMAL_ERROR(qc, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED,
|
|
NULL);
|
|
goto err;
|
|
}
|
|
|
|
demux = ossl_quic_channel_get0_demux(qc->ch);
|
|
ret = ossl_quic_demux_inject(demux, buf, buf_len, peer, local);
|
|
|
|
err:
|
|
quic_unlock(qc);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* QUIC Front-End I/O API: SSL_CTX Management
|
|
* ==========================================
|
|
*/
|
|
|
|
long ossl_quic_ctx_ctrl(SSL_CTX *ctx, int cmd, long larg, void *parg)
|
|
{
|
|
switch (cmd) {
|
|
default:
|
|
return ssl3_ctx_ctrl(ctx, cmd, larg, parg);
|
|
}
|
|
}
|
|
|
|
long ossl_quic_callback_ctrl(SSL *s, int cmd, void (*fp) (void))
|
|
{
|
|
return ssl3_callback_ctrl(s, cmd, fp);
|
|
}
|
|
|
|
long ossl_quic_ctx_callback_ctrl(SSL_CTX *ctx, int cmd, void (*fp) (void))
|
|
{
|
|
return ssl3_ctx_callback_ctrl(ctx, cmd, fp);
|
|
}
|
|
|
|
int ossl_quic_renegotiate_check(SSL *ssl, int initok)
|
|
{
|
|
/* We never do renegotiation. */
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* These functions define the TLSv1.2 (and below) ciphers that are supported by
|
|
* the SSL_METHOD. Since QUIC only supports TLSv1.3 we don't support any.
|
|
*/
|
|
|
|
int ossl_quic_num_ciphers(void)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
const SSL_CIPHER *ossl_quic_get_cipher(unsigned int u)
|
|
{
|
|
return NULL;
|
|
}
|