/*
- * Copyright 2015-2017 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2015-2022 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * 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
*/
+#if defined(__TANDEM) && defined(_SPT_MODEL_)
+# include <spthread.h>
+# include <spt_extensions.h> /* timeval */
+#endif
+
#include "internal/cryptlib.h"
#include <openssl/rand.h>
-#include "../ssl_locl.h"
-#include "statem_locl.h"
+#include "../ssl_local.h"
+#include "statem_local.h"
+#include <assert.h>
/*
* This file implements the SSL/TLS/DTLS state machines.
SUB_STATE_END_HANDSHAKE
} SUB_STATE_RETURN;
-static int state_machine(SSL *s, int server);
-static void init_read_state_machine(SSL *s);
-static SUB_STATE_RETURN read_state_machine(SSL *s);
-static void init_write_state_machine(SSL *s);
-static SUB_STATE_RETURN write_state_machine(SSL *s);
+static int state_machine(SSL_CONNECTION *s, int server);
+static void init_read_state_machine(SSL_CONNECTION *s);
+static SUB_STATE_RETURN read_state_machine(SSL_CONNECTION *s);
+static void init_write_state_machine(SSL_CONNECTION *s);
+static SUB_STATE_RETURN write_state_machine(SSL_CONNECTION *s);
OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl)
{
- return ssl->statem.hand_state;
+ const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(ssl);
+
+ if (sc == NULL)
+ return TLS_ST_BEFORE;
+
+ return sc->statem.hand_state;
}
-int SSL_in_init(SSL *s)
+int SSL_in_init(const SSL *s)
{
- return s->statem.in_init;
+ const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
+
+ if (sc == NULL)
+ return 0;
+
+ return sc->statem.in_init;
}
-int SSL_is_init_finished(SSL *s)
+int SSL_is_init_finished(const SSL *s)
{
- return !(s->statem.in_init) && (s->statem.hand_state == TLS_ST_OK);
+ const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
+
+ if (sc == NULL)
+ return 0;
+
+ return !(sc->statem.in_init) && (sc->statem.hand_state == TLS_ST_OK);
}
-int SSL_in_before(SSL *s)
+int SSL_in_before(const SSL *s)
{
+ const SSL_CONNECTION *sc = SSL_CONNECTION_FROM_CONST_SSL(s);
+
+ if (sc == NULL)
+ return 0;
+
/*
* Historically being "in before" meant before anything had happened. In the
* current code though we remain in the "before" state for a while after we
* first message to arrive). There "in before" is taken to mean "in before"
* and not started any handshake process yet.
*/
- return (s->statem.hand_state == TLS_ST_BEFORE)
- && (s->statem.state == MSG_FLOW_UNINITED);
+ return (sc->statem.hand_state == TLS_ST_BEFORE)
+ && (sc->statem.state == MSG_FLOW_UNINITED);
+}
+
+OSSL_HANDSHAKE_STATE ossl_statem_get_state(SSL_CONNECTION *s)
+{
+ return s != NULL ? s->statem.hand_state : TLS_ST_BEFORE;
}
/*
* Clear the state machine state and reset back to MSG_FLOW_UNINITED
*/
-void ossl_statem_clear(SSL *s)
+void ossl_statem_clear(SSL_CONNECTION *s)
{
s->statem.state = MSG_FLOW_UNINITED;
s->statem.hand_state = TLS_ST_BEFORE;
- s->statem.in_init = 1;
+ ossl_statem_set_in_init(s, 1);
s->statem.no_cert_verify = 0;
+ s->statem.ignore_fatal = 0;
}
/*
* Set the state machine up ready for a renegotiation handshake
*/
-void ossl_statem_set_renegotiate(SSL *s)
+void ossl_statem_set_renegotiate(SSL_CONNECTION *s)
{
- s->statem.in_init = 1;
+ ossl_statem_set_in_init(s, 1);
s->statem.request_state = TLS_ST_SW_HELLO_REQ;
}
-/*
- * Put the state machine into an error state and send an alert if appropriate.
- * This is a permanent error for the current connection.
- */
-void ossl_statem_fatal(SSL *s, int al, int func, int reason, const char *file,
- int line)
+void ossl_statem_send_fatal(SSL_CONNECTION *s, int al)
{
- s->statem.in_init = 1;
+ /*
+ * Some public APIs may call internal functions that fatal error,
+ * which doesn't make sense outside the state machine. Those APIs
+ * that can handle a failure set this flag to avoid errors sending
+ * alerts. Example: getting a wire-formatted certificate for
+ * compression.
+ */
+ if (s->statem.ignore_fatal)
+ return;
+ /* We shouldn't call SSLfatal() twice. Once is enough */
+ if (s->statem.in_init && s->statem.state == MSG_FLOW_ERROR)
+ return;
+ ossl_statem_set_in_init(s, 1);
s->statem.state = MSG_FLOW_ERROR;
- ERR_put_error(ERR_LIB_SSL, func, reason, file, line);
if (al != SSL_AD_NO_ALERT)
ssl3_send_alert(s, SSL3_AL_FATAL, al);
}
+/*
+ * Error reporting building block that's used instead of ERR_set_error().
+ * In addition to what ERR_set_error() does, this puts the state machine
+ * into an error state and sends an alert if appropriate.
+ * This is a permanent error for the current connection.
+ */
+void ossl_statem_fatal(SSL_CONNECTION *s, int al, int reason,
+ const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ ERR_vset_error(ERR_LIB_SSL, reason, fmt, args);
+ va_end(args);
+
+ ossl_statem_send_fatal(s, al);
+}
+
+/*
+ * This macro should only be called if we are already expecting to be in
+ * a fatal error state. We verify that we are, and set it if not (this would
+ * indicate a bug).
+ */
+#define check_fatal(s) \
+ do { \
+ if (!ossl_assert((s)->statem.in_init \
+ && (s)->statem.state == MSG_FLOW_ERROR)) \
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_R_MISSING_FATAL); \
+ } while (0)
+
/*
* Discover whether the current connection is in the error state.
*
* 1: Yes
* 0: No
*/
-int ossl_statem_in_error(const SSL *s)
+int ossl_statem_in_error(const SSL_CONNECTION *s)
{
if (s->statem.state == MSG_FLOW_ERROR)
return 1;
return 0;
}
-void ossl_statem_set_in_init(SSL *s, int init)
+void ossl_statem_set_in_init(SSL_CONNECTION *s, int init)
{
s->statem.in_init = init;
+ if (s->rlayer.rrlmethod != NULL && s->rlayer.rrlmethod->set_in_init != NULL)
+ s->rlayer.rrlmethod->set_in_init(s->rlayer.rrl, init);
}
-int ossl_statem_get_in_handshake(SSL *s)
+int ossl_statem_get_in_handshake(SSL_CONNECTION *s)
{
return s->statem.in_handshake;
}
-void ossl_statem_set_in_handshake(SSL *s, int inhand)
+void ossl_statem_set_in_handshake(SSL_CONNECTION *s, int inhand)
{
if (inhand)
s->statem.in_handshake++;
}
/* Are we in a sensible state to skip over unreadable early data? */
-int ossl_statem_skip_early_data(SSL *s)
+int ossl_statem_skip_early_data(SSL_CONNECTION *s)
{
if (s->ext.early_data != SSL_EARLY_DATA_REJECTED)
return 0;
- if (!s->server || s->statem.hand_state != TLS_ST_EARLY_DATA)
+ if (!s->server
+ || s->statem.hand_state != TLS_ST_EARLY_DATA
+ || s->hello_retry_request == SSL_HRR_COMPLETE)
return 0;
return 1;
* attempting to read data (SSL_read*()), or -1 if we are in SSL_do_handshake()
* or similar.
*/
-void ossl_statem_check_finish_init(SSL *s, int sending)
+void ossl_statem_check_finish_init(SSL_CONNECTION *s, int sending)
{
if (sending == -1) {
if (s->statem.hand_state == TLS_ST_PENDING_EARLY_DATA_END
}
}
-void ossl_statem_set_hello_verify_done(SSL *s)
+void ossl_statem_set_hello_verify_done(SSL_CONNECTION *s)
{
s->statem.state = MSG_FLOW_UNINITED;
- s->statem.in_init = 1;
+ ossl_statem_set_in_init(s, 1);
/*
* This will get reset (briefly) back to TLS_ST_BEFORE when we enter
* state_machine() because |state| is MSG_FLOW_UNINITED, but until then any
int ossl_statem_connect(SSL *s)
{
- return state_machine(s, 0);
+ SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
+
+ if (sc == NULL)
+ return -1;
+
+ return state_machine(sc, 0);
}
int ossl_statem_accept(SSL *s)
{
- return state_machine(s, 1);
+ SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(s);
+
+ if (sc == NULL)
+ return -1;
+
+ return state_machine(sc, 1);
}
typedef void (*info_cb) (const SSL *, int, int);
-static info_cb get_callback(SSL *s)
+static info_cb get_callback(SSL_CONNECTION *s)
{
+ SSL_CTX *sctx = SSL_CONNECTION_GET_CTX(s);
+
if (s->info_callback != NULL)
return s->info_callback;
- else if (s->ctx->info_callback != NULL)
- return s->ctx->info_callback;
+ else if (sctx->info_callback != NULL)
+ return sctx->info_callback;
return NULL;
}
* 1: Success
* <=0: NBIO or error
*/
-static int state_machine(SSL *s, int server)
+static int state_machine(SSL_CONNECTION *s, int server)
{
BUF_MEM *buf = NULL;
void (*cb) (const SSL *ssl, int type, int val) = NULL;
OSSL_STATEM *st = &s->statem;
int ret = -1;
int ssret;
+ SSL *ssl = SSL_CONNECTION_GET_SSL(s);
if (st->state == MSG_FLOW_ERROR) {
/* Shouldn't have been called if we're already in the error state */
cb = get_callback(s);
st->in_handshake++;
- if (!SSL_in_init(s) || SSL_in_before(s)) {
- if (!SSL_clear(s))
+ if (!SSL_in_init(ssl) || SSL_in_before(ssl)) {
+ /*
+ * If we are stateless then we already called SSL_clear() - don't do
+ * it again and clear the STATELESS flag itself.
+ */
+ if ((s->s3.flags & TLS1_FLAGS_STATELESS) == 0 && !SSL_clear(ssl))
return -1;
}
#ifndef OPENSSL_NO_SCTP
- if (SSL_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(s))) {
+ if (SSL_CONNECTION_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(ssl))) {
/*
* Notify SCTP BIO socket to enter handshake mode and prevent stream
* identifier other than 0.
*/
- BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE,
+ BIO_ctrl(SSL_get_wbio(ssl), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE,
st->in_handshake, NULL);
}
#endif
}
s->server = server;
- if (cb != NULL)
- cb(s, SSL_CB_HANDSHAKE_START, 1);
+ if (cb != NULL) {
+ if (SSL_IS_FIRST_HANDSHAKE(s) || !SSL_CONNECTION_IS_TLS13(s))
+ cb(ssl, SSL_CB_HANDSHAKE_START, 1);
+ }
- if (SSL_IS_DTLS(s)) {
+ /*
+ * Fatal errors in this block don't send an alert because we have
+ * failed to even initialise properly. Sending an alert is probably
+ * doomed to failure.
+ */
+
+ if (SSL_CONNECTION_IS_DTLS(s)) {
if ((s->version & 0xff00) != (DTLS1_VERSION & 0xff00) &&
(server || (s->version & 0xff00) != (DTLS1_BAD_VER & 0xff00))) {
- /* We've failed to even initialise so no alert sent */
- SSLfatal(s, SSL_AD_NO_ALERT, SSL_F_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_INTERNAL_ERROR);
goto end;
}
} else {
if ((s->version >> 8) != SSL3_VERSION_MAJOR) {
- /* We've failed to even initialise so no alert sent */
- SSLfatal(s, SSL_AD_NO_ALERT, SSL_F_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_INTERNAL_ERROR);
goto end;
}
}
if (!ssl_security(s, SSL_SECOP_VERSION, 0, s->version, NULL)) {
- /* We've failed to even initialise so no alert sent */
- SSLfatal(s, SSL_AD_NO_ALERT, SSL_F_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_INTERNAL_ERROR);
goto end;
}
if (s->init_buf == NULL) {
if ((buf = BUF_MEM_new()) == NULL) {
+ SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_INTERNAL_ERROR);
goto end;
}
if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) {
+ SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_INTERNAL_ERROR);
goto end;
}
s->init_buf = buf;
}
if (!ssl3_setup_buffers(s)) {
+ SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_INTERNAL_ERROR);
goto end;
}
s->init_num = 0;
/*
* Should have been reset by tls_process_finished, too.
*/
- s->s3->change_cipher_spec = 0;
+ s->s3.change_cipher_spec = 0;
/*
* Ok, we now need to push on a buffering BIO ...but not with
* SCTP
*/
#ifndef OPENSSL_NO_SCTP
- if (!SSL_IS_DTLS(s) || !BIO_dgram_is_sctp(SSL_get_wbio(s)))
+ if (!SSL_CONNECTION_IS_DTLS(s) || !BIO_dgram_is_sctp(SSL_get_wbio(ssl)))
#endif
if (!ssl_init_wbio_buffer(s)) {
+ SSLfatal(s, SSL_AD_NO_ALERT, ERR_R_INTERNAL_ERROR);
goto end;
}
- if ((SSL_in_before(s))
+ if ((SSL_in_before(ssl))
|| s->renegotiate) {
- if (!tls_setup_handshake(s))
+ if (!tls_setup_handshake(s)) {
+ /* SSLfatal() already called */
goto end;
+ }
if (SSL_IS_FIRST_HANDSHAKE(s))
st->read_state_first_init = 1;
}
} else {
/* Error */
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ check_fatal(s);
+ ERR_raise(ERR_LIB_SSL, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
goto end;
}
}
st->in_handshake--;
#ifndef OPENSSL_NO_SCTP
- if (SSL_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(s))) {
+ if (SSL_CONNECTION_IS_DTLS(s) && BIO_dgram_is_sctp(SSL_get_wbio(ssl))) {
/*
* Notify SCTP BIO socket to leave handshake mode and allow stream
* identifier other than 0.
*/
- BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE,
+ BIO_ctrl(SSL_get_wbio(ssl), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE,
st->in_handshake, NULL);
}
#endif
BUF_MEM_free(buf);
if (cb != NULL) {
if (server)
- cb(s, SSL_CB_ACCEPT_EXIT, ret);
+ cb(ssl, SSL_CB_ACCEPT_EXIT, ret);
else
- cb(s, SSL_CB_CONNECT_EXIT, ret);
+ cb(ssl, SSL_CB_CONNECT_EXIT, ret);
}
return ret;
}
/*
* Initialise the MSG_FLOW_READING sub-state machine
*/
-static void init_read_state_machine(SSL *s)
+static void init_read_state_machine(SSL_CONNECTION *s)
{
OSSL_STATEM *st = &s->statem;
st->read_state = READ_STATE_HEADER;
}
-static int grow_init_buf(SSL *s, size_t size) {
+static int grow_init_buf(SSL_CONNECTION *s, size_t size) {
size_t msg_offset = (char *)s->init_msg - s->init_buf->data;
* control returns to the calling application. When this function is recalled we
* will resume in the same state where we left off.
*/
-static SUB_STATE_RETURN read_state_machine(SSL *s)
+static SUB_STATE_RETURN read_state_machine(SSL_CONNECTION *s)
{
OSSL_STATEM *st = &s->statem;
int ret, mt;
size_t len = 0;
- int (*transition) (SSL *s, int mt);
+ int (*transition) (SSL_CONNECTION *s, int mt);
PACKET pkt;
- MSG_PROCESS_RETURN(*process_message) (SSL *s, PACKET *pkt);
- WORK_STATE(*post_process_message) (SSL *s, WORK_STATE wst);
- size_t (*max_message_size) (SSL *s);
+ MSG_PROCESS_RETURN(*process_message) (SSL_CONNECTION *s, PACKET *pkt);
+ WORK_STATE(*post_process_message) (SSL_CONNECTION *s, WORK_STATE wst);
+ size_t (*max_message_size) (SSL_CONNECTION *s);
void (*cb) (const SSL *ssl, int type, int val) = NULL;
+ SSL *ssl = SSL_CONNECTION_GET_SSL(s);
cb = get_callback(s);
switch (st->read_state) {
case READ_STATE_HEADER:
/* Get the state the peer wants to move to */
- if (SSL_IS_DTLS(s)) {
+ if (SSL_CONNECTION_IS_DTLS(s)) {
/*
* In DTLS we get the whole message in one go - header and body
*/
- ret = dtls_get_message(s, &mt, &len);
+ ret = dtls_get_message(s, &mt);
} else {
ret = tls_get_message_header(s, &mt);
}
if (cb != NULL) {
/* Notify callback of an impending state change */
if (s->server)
- cb(s, SSL_CB_ACCEPT_LOOP, 1);
+ cb(ssl, SSL_CB_ACCEPT_LOOP, 1);
else
- cb(s, SSL_CB_CONNECT_LOOP, 1);
+ cb(ssl, SSL_CB_CONNECT_LOOP, 1);
}
/*
* Validate that we are allowed to move to the new state and move
* to that state if so
*/
- if (!transition(s, mt)) {
+ if (!transition(s, mt))
return SUB_STATE_ERROR;
- }
- if (s->s3->tmp.message_size > max_message_size(s)) {
- SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER, SSL_F_READ_STATE_MACHINE,
+ if (s->s3.tmp.message_size > max_message_size(s)) {
+ SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
SSL_R_EXCESSIVE_MESSAGE_SIZE);
return SUB_STATE_ERROR;
}
/* dtls_get_message already did this */
- if (!SSL_IS_DTLS(s)
- && s->s3->tmp.message_size > 0
- && !grow_init_buf(s, s->s3->tmp.message_size
+ if (!SSL_CONNECTION_IS_DTLS(s)
+ && s->s3.tmp.message_size > 0
+ && !grow_init_buf(s, s->s3.tmp.message_size
+ SSL3_HM_HEADER_LENGTH)) {
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_READ_STATE_MACHINE,
- ERR_R_BUF_LIB);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_BUF_LIB);
return SUB_STATE_ERROR;
}
/* Fall through */
case READ_STATE_BODY:
- if (!SSL_IS_DTLS(s)) {
- /* We already got this above for DTLS */
+ if (SSL_CONNECTION_IS_DTLS(s)) {
+ /*
+ * Actually we already have the body, but we give DTLS the
+ * opportunity to do any further processing.
+ */
+ ret = dtls_get_message_body(s, &len);
+ } else {
ret = tls_get_message_body(s, &len);
- if (ret == 0) {
- /* Could be non-blocking IO */
- return SUB_STATE_ERROR;
- }
+ }
+ if (ret == 0) {
+ /* Could be non-blocking IO */
+ return SUB_STATE_ERROR;
}
s->first_packet = 0;
if (!PACKET_buf_init(&pkt, s->init_msg, len)) {
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_READ_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
return SUB_STATE_ERROR;
}
ret = process_message(s, &pkt);
switch (ret) {
case MSG_PROCESS_ERROR:
+ check_fatal(s);
return SUB_STATE_ERROR;
case MSG_PROCESS_FINISHED_READING:
- if (SSL_IS_DTLS(s)) {
+ if (SSL_CONNECTION_IS_DTLS(s)) {
dtls1_stop_timer(s);
}
return SUB_STATE_FINISHED;
st->read_state_work = post_process_message(s, st->read_state_work);
switch (st->read_state_work) {
case WORK_ERROR:
+ check_fatal(s);
+ /* Fall through */
case WORK_MORE_A:
case WORK_MORE_B:
case WORK_MORE_C:
break;
case WORK_FINISHED_STOP:
- if (SSL_IS_DTLS(s)) {
+ if (SSL_CONNECTION_IS_DTLS(s)) {
dtls1_stop_timer(s);
}
return SUB_STATE_FINISHED;
default:
/* Shouldn't happen */
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_READ_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
return SUB_STATE_ERROR;
}
}
/*
* Send a previously constructed message to the peer.
*/
-static int statem_do_write(SSL *s)
+static int statem_do_write(SSL_CONNECTION *s)
{
OSSL_STATEM *st = &s->statem;
if (st->hand_state == TLS_ST_CW_CHANGE
|| st->hand_state == TLS_ST_SW_CHANGE) {
- if (SSL_IS_DTLS(s))
+ if (SSL_CONNECTION_IS_DTLS(s))
return dtls1_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC);
else
return ssl3_do_write(s, SSL3_RT_CHANGE_CIPHER_SPEC);
/*
* Initialise the MSG_FLOW_WRITING sub-state machine
*/
-static void init_write_state_machine(SSL *s)
+static void init_write_state_machine(SSL_CONNECTION *s)
{
OSSL_STATEM *st = &s->statem;
* message has been completed. As for WRITE_STATE_PRE_WORK this could also
* result in an NBIO event.
*/
-static SUB_STATE_RETURN write_state_machine(SSL *s)
+static SUB_STATE_RETURN write_state_machine(SSL_CONNECTION *s)
{
OSSL_STATEM *st = &s->statem;
int ret;
- WRITE_TRAN(*transition) (SSL *s);
- WORK_STATE(*pre_work) (SSL *s, WORK_STATE wst);
- WORK_STATE(*post_work) (SSL *s, WORK_STATE wst);
- int (*get_construct_message_f) (SSL *s, WPACKET *pkt,
- int (**confunc) (SSL *s, WPACKET *pkt),
+ WRITE_TRAN(*transition) (SSL_CONNECTION *s);
+ WORK_STATE(*pre_work) (SSL_CONNECTION *s, WORK_STATE wst);
+ WORK_STATE(*post_work) (SSL_CONNECTION *s, WORK_STATE wst);
+ int (*get_construct_message_f) (SSL_CONNECTION *s,
+ CON_FUNC_RETURN (**confunc) (SSL_CONNECTION *s,
+ WPACKET *pkt),
int *mt);
void (*cb) (const SSL *ssl, int type, int val) = NULL;
- int (*confunc) (SSL *s, WPACKET *pkt);
+ CON_FUNC_RETURN (*confunc) (SSL_CONNECTION *s, WPACKET *pkt);
int mt;
WPACKET pkt;
+ SSL *ssl = SSL_CONNECTION_GET_SSL(s);
cb = get_callback(s);
if (cb != NULL) {
/* Notify callback of an impending state change */
if (s->server)
- cb(s, SSL_CB_ACCEPT_LOOP, 1);
+ cb(ssl, SSL_CB_ACCEPT_LOOP, 1);
else
- cb(s, SSL_CB_CONNECT_LOOP, 1);
+ cb(ssl, SSL_CB_CONNECT_LOOP, 1);
}
switch (transition(s)) {
case WRITE_TRAN_CONTINUE:
break;
case WRITE_TRAN_ERROR:
+ check_fatal(s);
return SUB_STATE_ERROR;
}
break;
case WRITE_STATE_PRE_WORK:
switch (st->write_state_work = pre_work(s, st->write_state_work)) {
case WORK_ERROR:
+ check_fatal(s);
+ /* Fall through */
case WORK_MORE_A:
case WORK_MORE_B:
case WORK_MORE_C:
case WORK_FINISHED_STOP:
return SUB_STATE_END_HANDSHAKE;
}
- if (!get_construct_message_f(s, &pkt, &confunc, &mt)) {
+ if (!get_construct_message_f(s, &confunc, &mt)) {
/* SSLfatal() already called */
return SUB_STATE_ERROR;
}
if (!WPACKET_init(&pkt, s->init_buf)
|| !ssl_set_handshake_header(s, &pkt, mt)) {
WPACKET_cleanup(&pkt);
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_WRITE_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
return SUB_STATE_ERROR;
}
- if (confunc != NULL && !confunc(s, &pkt)) {
- WPACKET_cleanup(&pkt);
- /* SSLfatal() already called */
- return SUB_STATE_ERROR;
+ if (confunc != NULL) {
+ CON_FUNC_RETURN tmpret;
+
+ tmpret = confunc(s, &pkt);
+ if (tmpret == CON_FUNC_ERROR) {
+ WPACKET_cleanup(&pkt);
+ check_fatal(s);
+ return SUB_STATE_ERROR;
+ } else if (tmpret == CON_FUNC_DONT_SEND) {
+ /*
+ * The construction function decided not to construct the
+ * message after all and continue. Skip sending.
+ */
+ WPACKET_cleanup(&pkt);
+ st->write_state = WRITE_STATE_POST_WORK;
+ st->write_state_work = WORK_MORE_A;
+ break;
+ } /* else success */
}
if (!ssl_close_construct_packet(s, &pkt, mt)
|| !WPACKET_finish(&pkt)) {
WPACKET_cleanup(&pkt);
- SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_WRITE_STATE_MACHINE,
- ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
return SUB_STATE_ERROR;
}
/* Fall through */
case WRITE_STATE_SEND:
- if (SSL_IS_DTLS(s) && st->use_timer) {
+ if (SSL_CONNECTION_IS_DTLS(s) && st->use_timer) {
dtls1_start_timer(s);
}
ret = statem_do_write(s);
case WRITE_STATE_POST_WORK:
switch (st->write_state_work = post_work(s, st->write_state_work)) {
case WORK_ERROR:
+ check_fatal(s);
+ /* Fall through */
case WORK_MORE_A:
case WORK_MORE_B:
case WORK_MORE_C:
break;
default:
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, ERR_R_INTERNAL_ERROR);
return SUB_STATE_ERROR;
}
}
/*
* Flush the write BIO
*/
-int statem_flush(SSL *s)
+int statem_flush(SSL_CONNECTION *s)
{
s->rwstate = SSL_WRITING;
if (BIO_flush(s->wbio) <= 0) {
* 1: Yes (application data allowed)
* 0: No (application data not allowed)
*/
-int ossl_statem_app_data_allowed(SSL *s)
+int ossl_statem_app_data_allowed(SSL_CONNECTION *s)
{
OSSL_STATEM *st = &s->statem;
if (st->state == MSG_FLOW_UNINITED)
return 0;
- if (!s->s3->in_read_app_data || (s->s3->total_renegotiations == 0))
+ if (!s->s3.in_read_app_data || (s->s3.total_renegotiations == 0))
return 0;
if (s->server) {
return 0;
}
+
+/*
+ * This function returns 1 if TLS exporter is ready to export keying
+ * material, or 0 if otherwise.
+ */
+int ossl_statem_export_allowed(SSL_CONNECTION *s)
+{
+ return s->s3.previous_server_finished_len != 0
+ && s->statem.hand_state != TLS_ST_SW_FINISHED;
+}
+
+/*
+ * Return 1 if early TLS exporter is ready to export keying material,
+ * or 0 if otherwise.
+ */
+int ossl_statem_export_early_allowed(SSL_CONNECTION *s)
+{
+ /*
+ * The early exporter secret is only present on the server if we
+ * have accepted early_data. It is present on the client as long
+ * as we have sent early_data.
+ */
+ return s->ext.early_data == SSL_EARLY_DATA_ACCEPTED
+ || (!s->server && s->ext.early_data != SSL_EARLY_DATA_NOT_SENT);
+}
projects / openssl.git / blobdiff