Delete unused functions (4e3458a5) · Commits · CYBER - Cyber Security / TS 103 523 MSP / TLMSP / TLMSP OpenSSL

ssl/d1_clnt.c

+0 −654

Original line number	Diff line number	Diff line
		@@ -126,9 +126,6 @@
		#endif

		static const SSL_METHOD *dtls1_get_client_method(int ver);
		#if 0
		static int dtls1_get_hello_verify(SSL *s);
		#endif

		static const SSL_METHOD *dtls1_get_client_method(int ver)
		{
		@@ -158,657 +155,6 @@ IMPLEMENT_dtls1_meth_func(DTLS1_VERSION,
		dtls1_connect,
		dtls1_get_client_method, DTLSv1_2_enc_data)

		#if 0
		int dtls1_connect(SSL *s)
		{
		BUF_MEM *buf = NULL;
		unsigned long Time = (unsigned long)time(NULL);
		void (cb) (const SSL ssl, int type, int val) = NULL;
		int ret = -1;
		int new_state, state, skip = 0;
		#ifndef OPENSSL_NO_SCTP
		unsigned char sctpauthkey[64];
		char labelbuffer[sizeof(DTLS1_SCTP_AUTH_LABEL)];
		#endif

		RAND_add(&Time, sizeof(Time), 0);
		ERR_clear_error();
		clear_sys_error();

		if (s->info_callback != NULL)
		cb = s->info_callback;
		else if (s->ctx->info_callback != NULL)
		cb = s->ctx->info_callback;

		s->in_handshake++;
		if (!SSL_in_init(s) \|\| SSL_in_before(s)) {
		if (!SSL_clear(s))
		return -1;
		}

		#ifndef OPENSSL_NO_SCTP
		/*
		* Notify SCTP BIO socket to enter handshake mode and prevent stream
		* identifier other than 0. Will be ignored if no SCTP is used.
		*/
		BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE,
		s->in_handshake, NULL);
		#endif

		#ifndef OPENSSL_NO_HEARTBEATS
		/*
		* If we're awaiting a HeartbeatResponse, pretend we already got and
		* don't await it anymore, because Heartbeats don't make sense during
		* handshakes anyway.
		*/
		if (s->tlsext_hb_pending) {
		dtls1_stop_timer(s);
		s->tlsext_hb_pending = 0;
		s->tlsext_hb_seq++;
		}
		#endif

		for (;;) {
		state = s->state;

		switch (s->state) {
		case SSL_ST_RENEGOTIATE:
		s->renegotiate = 1;
		s->state = SSL_ST_CONNECT;
		s->ctx->stats.sess_connect_renegotiate++;
		/* break */
		case SSL_ST_BEFORE:
		case SSL_ST_CONNECT:
		case SSL_ST_BEFORE \| SSL_ST_CONNECT:
		case SSL_ST_OK \| SSL_ST_CONNECT:

		s->server = 0;
		if (cb != NULL)
		cb(s, SSL_CB_HANDSHAKE_START, 1);

		if ((s->version & 0xff00) != (DTLS1_VERSION & 0xff00) &&
		(s->version & 0xff00) != (DTLS1_BAD_VER & 0xff00)) {
		SSLerr(SSL_F_DTLS1_CONNECT, ERR_R_INTERNAL_ERROR);
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}

		/* s->version=SSL3_VERSION; */
		s->type = SSL_ST_CONNECT;

		if (s->init_buf == NULL) {
		if ((buf = BUF_MEM_new()) == NULL) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}
		if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}
		s->init_buf = buf;
		buf = NULL;
		}

		if (!ssl3_setup_buffers(s)) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}

		/* setup buffing BIO */
		if (!ssl_init_wbio_buffer(s, 0)) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}

		/* don't push the buffering BIO quite yet */

		s->state = SSL3_ST_CW_CLNT_HELLO_A;
		s->ctx->stats.sess_connect++;
		s->init_num = 0;
		/* mark client_random uninitialized */
		memset(s->s3->client_random, 0, sizeof(s->s3->client_random));
		s->d1->send_cookie = 0;
		s->hit = 0;
		/*
		* Should have been reset by ssl3_get_finished, too.
		*/
		s->s3->change_cipher_spec = 0;
		break;

		#ifndef OPENSSL_NO_SCTP
		case DTLS1_SCTP_ST_CR_READ_SOCK:

		if (BIO_dgram_sctp_msg_waiting(SSL_get_rbio(s))) {
		s->s3->in_read_app_data = 2;
		s->rwstate = SSL_READING;
		BIO_clear_retry_flags(SSL_get_rbio(s));
		BIO_set_retry_read(SSL_get_rbio(s));
		ret = -1;
		goto end;
		}

		s->state = s->s3->tmp.next_state;
		break;

		case DTLS1_SCTP_ST_CW_WRITE_SOCK:
		/* read app data until dry event */

		ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s));
		if (ret < 0)
		goto end;

		if (ret == 0) {
		s->s3->in_read_app_data = 2;
		s->rwstate = SSL_READING;
		BIO_clear_retry_flags(SSL_get_rbio(s));
		BIO_set_retry_read(SSL_get_rbio(s));
		ret = -1;
		goto end;
		}

		s->state = s->d1->next_state;
		break;
		#endif

		case SSL3_ST_CW_CLNT_HELLO_A:
		case SSL3_ST_CW_CLNT_HELLO_B:

		s->shutdown = 0;

		/* every DTLS ClientHello resets Finished MAC */
		ssl3_init_finished_mac(s);

		dtls1_start_timer(s);
		ret = ssl3_client_hello(s);
		if (ret <= 0)
		goto end;

		if (s->d1->send_cookie) {
		s->state = SSL3_ST_CW_FLUSH;
		s->s3->tmp.next_state = SSL3_ST_CR_SRVR_HELLO_A;
		} else
		s->state = SSL3_ST_CR_SRVR_HELLO_A;

		s->init_num = 0;

		#ifndef OPENSSL_NO_SCTP
		/* Disable buffering for SCTP */
		if (!BIO_dgram_is_sctp(SSL_get_wbio(s))) {
		#endif
		/*
		* turn on buffering for the next lot of output
		*/
		if (s->bbio != s->wbio)
		s->wbio = BIO_push(s->bbio, s->wbio);
		#ifndef OPENSSL_NO_SCTP
		}
		#endif

		break;

		case SSL3_ST_CR_SRVR_HELLO_A:
		case SSL3_ST_CR_SRVR_HELLO_B:
		ret = ssl3_get_server_hello(s);
		if (ret <= 0)
		goto end;
		else {
		if (s->hit) {
		#ifndef OPENSSL_NO_SCTP
		/*
		* Add new shared key for SCTP-Auth, will be ignored if
		* no SCTP used.
		*/
		snprintf((char *)labelbuffer,
		sizeof(DTLS1_SCTP_AUTH_LABEL),
		DTLS1_SCTP_AUTH_LABEL);

		if (SSL_export_keying_material(s, sctpauthkey,
		sizeof(sctpauthkey),
		labelbuffer,
		sizeof(labelbuffer), NULL, 0,
		0) <= 0) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}

		BIO_ctrl(SSL_get_wbio(s),
		BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY,
		sizeof(sctpauthkey), sctpauthkey);
		#endif

		s->state = SSL3_ST_CR_CHANGE_A;
		if (s->tlsext_ticket_expected) {
		/* receive renewed session ticket */
		s->state = SSL3_ST_CR_SESSION_TICKET_A;
		}
		} else
		s->state = DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A;
		}
		s->init_num = 0;
		break;

		case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A:
		case DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B:

		ret = dtls1_get_hello_verify(s);
		if (ret <= 0)
		goto end;
		dtls1_stop_timer(s);
		if (s->d1->send_cookie) /* start again, with a cookie */
		s->state = SSL3_ST_CW_CLNT_HELLO_A;
		else
		s->state = SSL3_ST_CR_CERT_A;
		s->init_num = 0;
		break;

		case SSL3_ST_CR_CERT_A:
		case SSL3_ST_CR_CERT_B:
		/* Check if it is anon DH or PSK */
		if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL) &&
		!(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK)) {
		ret = ssl3_get_server_certificate(s);
		if (ret <= 0)
		goto end;

		if (s->tlsext_status_expected)
		s->state = SSL3_ST_CR_CERT_STATUS_A;
		else
		s->state = SSL3_ST_CR_KEY_EXCH_A;
		} else {
		skip = 1;
		s->state = SSL3_ST_CR_KEY_EXCH_A;
		}

		s->init_num = 0;
		break;

		case SSL3_ST_CR_KEY_EXCH_A:
		case SSL3_ST_CR_KEY_EXCH_B:
		ret = ssl3_get_key_exchange(s);
		if (ret <= 0)
		goto end;
		s->state = SSL3_ST_CR_CERT_REQ_A;
		s->init_num = 0;

		/*
		* at this point we check that we have the required stuff from
		* the server
		*/
		if (!ssl3_check_cert_and_algorithm(s)) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}
		break;

		case SSL3_ST_CR_CERT_REQ_A:
		case SSL3_ST_CR_CERT_REQ_B:
		ret = ssl3_get_certificate_request(s);
		if (ret <= 0)
		goto end;
		s->state = SSL3_ST_CR_SRVR_DONE_A;
		s->init_num = 0;
		break;

		case SSL3_ST_CR_SRVR_DONE_A:
		case SSL3_ST_CR_SRVR_DONE_B:
		ret = ssl3_get_server_done(s);
		if (ret <= 0)
		goto end;
		dtls1_stop_timer(s);
		if (s->s3->tmp.cert_req)
		s->s3->tmp.next_state = SSL3_ST_CW_CERT_A;
		else
		s->s3->tmp.next_state = SSL3_ST_CW_KEY_EXCH_A;
		s->init_num = 0;

		#ifndef OPENSSL_NO_SCTP
		if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
		state == SSL_ST_RENEGOTIATE)
		s->state = DTLS1_SCTP_ST_CR_READ_SOCK;
		else
		#endif
		s->state = s->s3->tmp.next_state;
		break;

		case SSL3_ST_CW_CERT_A:
		case SSL3_ST_CW_CERT_B:
		case SSL3_ST_CW_CERT_C:
		case SSL3_ST_CW_CERT_D:
		dtls1_start_timer(s);
		ret = ssl3_send_client_certificate(s);
		if (ret <= 0)
		goto end;
		s->state = SSL3_ST_CW_KEY_EXCH_A;
		s->init_num = 0;
		break;

		case SSL3_ST_CW_KEY_EXCH_A:
		case SSL3_ST_CW_KEY_EXCH_B:
		dtls1_start_timer(s);
		ret = ssl3_send_client_key_exchange(s);
		if (ret <= 0)
		goto end;

		#ifndef OPENSSL_NO_SCTP
		/*
		* Add new shared key for SCTP-Auth, will be ignored if no SCTP
		* used.
		*/
		snprintf((char *)labelbuffer, sizeof(DTLS1_SCTP_AUTH_LABEL),
		DTLS1_SCTP_AUTH_LABEL);

		if (SSL_export_keying_material(s, sctpauthkey,
		sizeof(sctpauthkey), labelbuffer,
		sizeof(labelbuffer), NULL, 0, 0) <= 0) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}

		BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY,
		sizeof(sctpauthkey), sctpauthkey);
		#endif

		/*
		* EAY EAY EAY need to check for DH fix cert sent back
		*/
		/*
		* For TLS, cert_req is set to 2, so a cert chain of nothing is
		* sent, but no verify packet is sent
		*/
		if (s->s3->tmp.cert_req == 1) {
		s->state = SSL3_ST_CW_CERT_VRFY_A;
		} else {
		#ifndef OPENSSL_NO_SCTP
		if (BIO_dgram_is_sctp(SSL_get_wbio(s))) {
		s->d1->next_state = SSL3_ST_CW_CHANGE_A;
		s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
		} else
		#endif
		s->state = SSL3_ST_CW_CHANGE_A;
		}

		s->init_num = 0;
		break;

		case SSL3_ST_CW_CERT_VRFY_A:
		case SSL3_ST_CW_CERT_VRFY_B:
		dtls1_start_timer(s);
		ret = ssl3_send_client_verify(s);
		if (ret <= 0)
		goto end;
		#ifndef OPENSSL_NO_SCTP
		if (BIO_dgram_is_sctp(SSL_get_wbio(s))) {
		s->d1->next_state = SSL3_ST_CW_CHANGE_A;
		s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
		} else
		#endif
		s->state = SSL3_ST_CW_CHANGE_A;
		s->init_num = 0;
		break;

		case SSL3_ST_CW_CHANGE_A:
		case SSL3_ST_CW_CHANGE_B:
		if (!s->hit)
		dtls1_start_timer(s);
		ret = dtls1_send_change_cipher_spec(s,
		SSL3_ST_CW_CHANGE_A,
		SSL3_ST_CW_CHANGE_B);
		if (ret <= 0)
		goto end;

		s->state = SSL3_ST_CW_FINISHED_A;
		s->init_num = 0;

		s->session->cipher = s->s3->tmp.new_cipher;
		#ifdef OPENSSL_NO_COMP
		s->session->compress_meth = 0;
		#else
		if (s->s3->tmp.new_compression == NULL)
		s->session->compress_meth = 0;
		else
		s->session->compress_meth = s->s3->tmp.new_compression->id;
		#endif
		if (!s->method->ssl3_enc->setup_key_block(s)) {
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}

		if (!s->method->ssl3_enc->change_cipher_state(s,
		SSL3_CHANGE_CIPHER_CLIENT_WRITE))
		{
		ret = -1;
		s->state = SSL_ST_ERR;
		goto end;
		}
		#ifndef OPENSSL_NO_SCTP
		if (s->hit) {
		/*
		* Change to new shared key of SCTP-Auth, will be ignored if
		* no SCTP used.
		*/
		BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY,
		0, NULL);
		}
		#endif

		dtls1_reset_seq_numbers(s, SSL3_CC_WRITE);
		break;

		case SSL3_ST_CW_FINISHED_A:
		case SSL3_ST_CW_FINISHED_B:
		if (!s->hit)
		dtls1_start_timer(s);
		ret = ssl3_send_finished(s,
		SSL3_ST_CW_FINISHED_A,
		SSL3_ST_CW_FINISHED_B,
		s->method->
		ssl3_enc->client_finished_label,
		s->method->
		ssl3_enc->client_finished_label_len);
		if (ret <= 0)
		goto end;
		s->state = SSL3_ST_CW_FLUSH;

		if (s->hit) {
		s->s3->tmp.next_state = SSL_ST_OK;
		#ifndef OPENSSL_NO_SCTP
		if (BIO_dgram_is_sctp(SSL_get_wbio(s))) {
		s->d1->next_state = s->s3->tmp.next_state;
		s->s3->tmp.next_state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
		}
		#endif
		} else {
		#ifndef OPENSSL_NO_SCTP
		/*
		* Change to new shared key of SCTP-Auth, will be ignored if
		* no SCTP used.
		*/
		BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_NEXT_AUTH_KEY,
		0, NULL);
		#endif

		/*
		* Allow NewSessionTicket if ticket expected
		*/
		if (s->tlsext_ticket_expected)
		s->s3->tmp.next_state = SSL3_ST_CR_SESSION_TICKET_A;
		else
		s->s3->tmp.next_state = SSL3_ST_CR_CHANGE_A;
		}
		s->init_num = 0;
		break;

		case SSL3_ST_CR_SESSION_TICKET_A:
		case SSL3_ST_CR_SESSION_TICKET_B:
		ret = ssl3_get_new_session_ticket(s);
		if (ret <= 0)
		goto end;
		s->state = SSL3_ST_CR_CHANGE_A;
		s->init_num = 0;
		break;

		case SSL3_ST_CR_CERT_STATUS_A:
		case SSL3_ST_CR_CERT_STATUS_B:
		ret = ssl3_get_cert_status(s);
		if (ret <= 0)
		goto end;
		s->state = SSL3_ST_CR_KEY_EXCH_A;
		s->init_num = 0;
		break;

		case SSL3_ST_CR_CHANGE_A:
		case SSL3_ST_CR_CHANGE_B:
		ret = ssl3_get_change_cipher_spec(s, SSL3_ST_CR_CHANGE_A,
		SSL3_ST_CR_CHANGE_B);
		if (ret <= 0)
		goto end;

		s->state = SSL3_ST_CR_FINISHED_A;
		s->init_num = 0;
		break;

		case SSL3_ST_CR_FINISHED_A:
		case SSL3_ST_CR_FINISHED_B:
		ret = ssl3_get_finished(s, SSL3_ST_CR_FINISHED_A,
		SSL3_ST_CR_FINISHED_B);
		if (ret <= 0)
		goto end;
		dtls1_stop_timer(s);

		if (s->hit)
		s->state = SSL3_ST_CW_CHANGE_A;
		else
		s->state = SSL_ST_OK;

		#ifndef OPENSSL_NO_SCTP
		if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
		state == SSL_ST_RENEGOTIATE) {
		s->d1->next_state = s->state;
		s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
		}
		#endif

		s->init_num = 0;
		break;

		case SSL3_ST_CW_FLUSH:
		s->rwstate = SSL_WRITING;
		if (BIO_flush(s->wbio) <= 0) {
		/*
		* If the write error was fatal, stop trying
		*/
		if (!BIO_should_retry(s->wbio)) {
		s->rwstate = SSL_NOTHING;
		s->state = s->s3->tmp.next_state;
		}

		ret = -1;
		goto end;
		}
		s->rwstate = SSL_NOTHING;
		s->state = s->s3->tmp.next_state;
		break;

		case SSL_ST_OK:
		/* clean a few things up */
		ssl3_cleanup_key_block(s);

		/* Remove the buffering */
		ssl_free_wbio_buffer(s);

		s->init_num = 0;
		s->renegotiate = 0;
		s->new_session = 0;

		ssl_update_cache(s, SSL_SESS_CACHE_CLIENT);
		if (s->hit)
		s->ctx->stats.sess_hit++;

		ret = 1;
		/* s->server=0; */
		s->handshake_func = dtls1_connect;
		s->ctx->stats.sess_connect_good++;

		if (cb != NULL)
		cb(s, SSL_CB_HANDSHAKE_DONE, 1);

		/* done with handshaking */
		s->d1->handshake_read_seq = 0;
		s->d1->next_handshake_write_seq = 0;
		goto end;
		/* break; */

		case SSL_ST_ERR:
		default:
		SSLerr(SSL_F_DTLS1_CONNECT, SSL_R_UNKNOWN_STATE);
		ret = -1;
		goto end;
		/* break; */
		}

		/* did we do anything */
		if (!s->s3->tmp.reuse_message && !skip) {
		if (s->debug) {
		if ((ret = BIO_flush(s->wbio)) <= 0)
		goto end;
		}

		if ((cb != NULL) && (s->state != state)) {
		new_state = s->state;
		s->state = state;
		cb(s, SSL_CB_CONNECT_LOOP, 1);
		s->state = new_state;
		}
		}
		skip = 0;
		}
		end:
		s->in_handshake--;

		#ifndef OPENSSL_NO_SCTP
		/*
		* Notify SCTP BIO socket to leave handshake mode and allow stream
		* identifier other than 0. Will be ignored if no SCTP is used.
		*/
		BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_SET_IN_HANDSHAKE,
		s->in_handshake, NULL);
		#endif

		BUF_MEM_free(buf);
		if (cb != NULL)
		cb(s, SSL_CB_CONNECT_EXIT, ret);
		return (ret);
		}
		#endif

		#if 0
		static int dtls1_get_hello_verify(SSL *s)
		{
		int n, al, ok = 0;
		unsigned char *data;
		unsigned int cookie_len;

		/* TODO: CHECK first_packet handling!!! */
		s->first_packet = 1;
		n = s->method->ssl_get_message(s,
		DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A,
		DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B,
		-1, s->max_cert_list, &ok);
		s->first_packet = 0;

		if (!ok)
		return ((int)n);
		}
		#endif

		enum MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s, unsigned long n)
		{

ssl/s3_clnt.c

+0 −329

File changed.

Preview size limit exceeded, changes collapsed.

ssl/ssl_locl.h

+0 −15

Original line number	Diff line number	Diff line
		@@ -2158,13 +2158,7 @@ __owur unsigned int dtls1_link_min_mtu(void);
		void dtls1_hm_fragment_free(hm_fragment *frag);

		/* some client-only functions */
		__owur int ssl3_client_hello(SSL *s);
		__owur int tls_construct_client_hello(SSL *s);
		__owur int ssl3_get_server_hello(SSL *s);
		__owur int ssl3_get_certificate_request(SSL *s);
		__owur int ssl3_get_new_session_ticket(SSL *s);
		__owur int ssl3_get_cert_status(SSL *s);
		__owur int ssl3_get_server_done(SSL *s);
		__owur enum MSG_PROCESS_RETURN tls_process_server_hello(SSL *s,
		unsigned long n);
		__owur enum MSG_PROCESS_RETURN tls_process_certificate_request(SSL *s,
		@@ -2173,33 +2167,24 @@ __owur enum MSG_PROCESS_RETURN tls_process_new_session_ticket(SSL *s,
		unsigned long n);
		__owur enum MSG_PROCESS_RETURN tls_process_cert_status(SSL *s, unsigned long n);
		__owur enum MSG_PROCESS_RETURN tls_process_server_done(SSL *s, unsigned long n);
		__owur int ssl3_send_client_verify(SSL *s);
		__owur int tls_construct_client_verify(SSL *s);
		__owur int tls_construct_client_verify(SSL *s);
		int ssl3_send_client_certificate(SSL *s);
		__owur enum WORK_STATE tls_prepare_client_certificate(SSL *s,
		enum WORK_STATE wst);
		__owur int tls_construct_client_certificate(SSL *s);
		__owur int ssl_do_client_cert_cb(SSL s, X509 px509, EVP_PKEY *ppkey);
		__owur int ssl3_send_client_key_exchange(SSL *s);
		__owur int tls_construct_client_key_exchange(SSL *s);
		__owur int tls_client_key_exchange_post_work(SSL *s);
		__owur int ssl3_get_key_exchange(SSL *s);
		__owur int ssl3_get_server_certificate(SSL *s);
		__owur enum MSG_PROCESS_RETURN tls_process_key_exchange(SSL *s,
		unsigned long n);
		__owur enum MSG_PROCESS_RETURN tls_process_server_certificate(SSL *s,
		unsigned long n);
		__owur int ssl3_check_cert_and_algorithm(SSL *s);
		# ifndef OPENSSL_NO_NEXTPROTONEG
		__owur int ssl3_send_next_proto(SSL *s);
		__owur int tls_construct_next_proto(SSL *s);
		# endif
		__owur enum MSG_PROCESS_RETURN dtls_process_hello_verify(SSL *s,
		unsigned long n);

		int dtls1_client_hello(SSL *s);

		/* some server-only functions */
		__owur int ssl3_get_client_hello(SSL *s);
		__owur int ssl3_send_server_hello(SSL *s);