Upgraded to openssl-1.0.2

1 files changed, 666 insertions, 1563 deletions

diff --git a/openssl/ssl/d1_clnt.c b/openssl/ssl/d1_clnt.c
index fd6562c11..1858263e1 100644
--- a/openssl/ssl/d1_clnt.c
+++ b/openssl/ssl/d1_clnt.c
@@ -1,7 +1,7 @@
 /* ssl/d1_clnt.c */
-/* 
+/*
  * DTLS implementation written by Nagendra Modadugu
- * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.  
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
  */
 /* ====================================================================
  * Copyright (c) 1999-2007 The OpenSSL Project.  All rights reserved.
@@ -11,7 +11,7 @@
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
+ *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
@@ -62,21 +62,21 @@
  * This package is an SSL implementation written
  * by Eric Young (eay@cryptsoft.com).
  * The implementation was written so as to conform with Netscapes SSL.
- * 
+ *
  * This library is free for commercial and non-commercial use as long as
  * the following conditions are aheared to.  The following conditions
  * apply to all code found in this distribution, be it the RC4, RSA,
  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  * included with this distribution is covered by the same copyright terms
  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- * 
+ *
  * Copyright remains Eric Young's, and as such any Copyright notices in
  * the code are not to be removed.
  * If this package is used in a product, Eric Young should be given attribution
  * as the author of the parts of the library used.
  * This can be in the form of a textual message at program startup or
  * in documentation (online or textual) provided with the package.
- * 
+ *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
@@ -91,10 +91,10 @@
  *     Eric Young (eay@cryptsoft.com)"
  *    The word 'cryptographic' can be left out if the rouines from the library
  *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from 
+ * 4. If you include any Windows specific code (or a derivative thereof) from
  *    the apps directory (application code) you must include an acknowledgement:
  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- * 
+ *
  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
@@ -106,7 +106,7 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
- * 
+ *
  * The licence and distribution terms for any publically available version or
  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  * copied and put under another distribution licence
@@ -116,7 +116,7 @@
 #include <stdio.h>
 #include "ssl_locl.h"
 #ifndef OPENSSL_NO_KRB5
-#include "kssl_lcl.h"
+# include "kssl_lcl.h"
 #endif
 #include <openssl/buffer.h>
 #include <openssl/rand.h>
@@ -125,1619 +125,722 @@
 #include <openssl/md5.h>
 #include <openssl/bn.h>
 #ifndef OPENSSL_NO_DH
-#include <openssl/dh.h>
+# include <openssl/dh.h>
 #endif
 
 static const SSL_METHOD *dtls1_get_client_method(int ver);
 static int dtls1_get_hello_verify(SSL *s);
 
 static const SSL_METHOD *dtls1_get_client_method(int ver)
-	{
-	if (ver == DTLS1_VERSION || ver == DTLS1_BAD_VER)
-		return(DTLSv1_client_method());
-	else
-		return(NULL);
-	}
-
-IMPLEMENT_dtls1_meth_func(DTLSv1_client_method,
-			ssl_undefined_function,
-			dtls1_connect,
-			dtls1_get_client_method)
+{
+    if (ver == DTLS1_VERSION || ver == DTLS1_BAD_VER)
+        return (DTLSv1_client_method());
+    else if (ver == DTLS1_2_VERSION)
+        return (DTLSv1_2_client_method());
+    else
+        return (NULL);
+}
+
+IMPLEMENT_dtls1_meth_func(DTLS1_VERSION,
+                          DTLSv1_client_method,
+                          ssl_undefined_function,
+                          dtls1_connect,
+                          dtls1_get_client_method, DTLSv1_enc_data)
+
+    IMPLEMENT_dtls1_meth_func(DTLS1_2_VERSION,
+                          DTLSv1_2_client_method,
+                          ssl_undefined_function,
+                          dtls1_connect,
+                          dtls1_get_client_method, DTLSv1_2_enc_data)
+
+    IMPLEMENT_dtls1_meth_func(DTLS_ANY_VERSION,
+                          DTLS_client_method,
+                          ssl_undefined_function,
+                          dtls1_connect,
+                          dtls1_get_client_method, DTLSv1_2_enc_data)
 
 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;
+{
+    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)];
+    unsigned char sctpauthkey[64];
+    char labelbuffer[sizeof(DTLS1_SCTP_AUTH_LABEL)];
 #endif
 
-	RAND_add(&Time,sizeof(Time),0);
-	ERR_clear_error();
-	clear_sys_error();
+    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;
 
-	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)) SSL_clear(s); 
+    s->in_handshake++;
+    if (!SSL_in_init(s) || SSL_in_before(s))
+        SSL_clear(s);
 
 #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);
+    /*
+     * 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;
-				goto end;
-				}
-				
-			/* s->version=SSL3_VERSION; */
-			s->type=SSL_ST_CONNECT;
-
-			if (s->init_buf == NULL)
-				{
-				if ((buf=BUF_MEM_new()) == NULL)
-					{
-					ret= -1;
-					goto end;
-					}
-				if (!BUF_MEM_grow(buf,SSL3_RT_MAX_PLAIN_LENGTH))
-					{
-					ret= -1;
-					goto end;
-					}
-				s->init_buf=buf;
-				buf=NULL;
-				}
-
-			if (!ssl3_setup_buffers(s)) { ret= -1; goto end; }
-
-			/* setup buffing BIO */
-			if (!ssl_init_wbio_buffer(s,0)) { ret= -1; 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;
-			break;
+    /*
+     * 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;
+                goto end;
+            }
+
+            /* s->version=SSL3_VERSION; */
+            s->type = SSL_ST_CONNECT;
+
+            if (s->init_buf == NULL) {
+                if ((buf = BUF_MEM_new()) == NULL) {
+                    ret = -1;
+                    goto end;
+                }
+                if (!BUF_MEM_grow(buf, SSL3_RT_MAX_PLAIN_LENGTH)) {
+                    ret = -1;
+                    goto end;
+                }
+                s->init_buf = buf;
+                buf = NULL;
+            }
+
+            if (!ssl3_setup_buffers(s)) {
+                ret = -1;
+                goto end;
+            }
+
+            /* setup buffing BIO */
+            if (!ssl_init_wbio_buffer(s, 0)) {
+                ret = -1;
+                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;
+            s->d1->change_cipher_spec_ok = 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;
+        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:
+        case SSL3_ST_CW_CLNT_HELLO_A:
+        case SSL3_ST_CW_CLNT_HELLO_B:
 
-			s->shutdown=0;
+            s->shutdown = 0;
 
-			/* every DTLS ClientHello resets Finished MAC */
-			ssl3_init_finished_mac(s);
+            /* every DTLS ClientHello resets Finished MAC */
+            ssl3_init_finished_mac(s);
 
-			dtls1_start_timer(s);
-			ret=dtls1_client_hello(s);
-			if (ret <= 0) goto end;
+            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;
+            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;
+            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);
+            /* 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;
+            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)
-					{
+        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);
-
-					SSL_export_keying_material(s, sctpauthkey,
-					                           sizeof(sctpauthkey), labelbuffer,
-					                           sizeof(labelbuffer), NULL, 0, 0);
-
-					BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY,
-							 sizeof(sctpauthkey), sctpauthkey);
-#endif
-
-					s->state=SSL3_ST_CR_FINISHED_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:
-#ifndef OPENSSL_NO_TLSEXT
-			ret=ssl3_check_finished(s);
-			if (ret <= 0) goto end;
-			if (ret == 2)
-				{
-				s->hit = 1;
-				if (s->tlsext_ticket_expected)
-					s->state=SSL3_ST_CR_SESSION_TICKET_A;
-				else
-					s->state=SSL3_ST_CR_FINISHED_A;
-				s->init_num=0;
-				break;
-				}
-#endif
-			/* 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;
+                    /*
+                     * 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);
+
+                    SSL_export_keying_material(s, sctpauthkey,
+                                               sizeof(sctpauthkey),
+                                               labelbuffer,
+                                               sizeof(labelbuffer), NULL, 0,
+                                               0);
+
+                    BIO_ctrl(SSL_get_wbio(s),
+                             BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY,
+                             sizeof(sctpauthkey), sctpauthkey);
+#endif
+
+                    s->state = SSL3_ST_CR_FINISHED_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;
 #ifndef OPENSSL_NO_TLSEXT
-				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;
-				}
+                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;
+            }
 #else
-				}
-			else
-				skip=1;
-
-			s->state=SSL3_ST_CR_KEY_EXCH_A;
-#endif
-			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;
-				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=dtls1_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=dtls1_send_client_key_exchange(s);
-			if (ret <= 0) goto end;
+            } else
+                skip = 1;
+
+            s->state = SSL3_ST_CR_KEY_EXCH_A;
+#endif
+            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;
+                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
-			/* 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);
-
-			SSL_export_keying_material(s, sctpauthkey,
-			                           sizeof(sctpauthkey), labelbuffer,
-			                           sizeof(labelbuffer), NULL, 0, 0);
-
-			BIO_ctrl(SSL_get_wbio(s), BIO_CTRL_DGRAM_SCTP_ADD_AUTH_KEY,
-					 sizeof(sctpauthkey), sctpauthkey);
-#endif
+            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;
 
-			/* 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->s3->change_cipher_spec=0;
-				}
-
-			s->init_num=0;
-			break;
-
-		case SSL3_ST_CW_CERT_VRFY_A:
-		case SSL3_ST_CW_CERT_VRFY_B:
-			dtls1_start_timer(s);
-			ret=dtls1_send_client_verify(s);
-			if (ret <= 0) goto end;
+            /*
+             * 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);
+
+            SSL_export_keying_material(s, sctpauthkey,
+                                       sizeof(sctpauthkey), labelbuffer,
+                                       sizeof(labelbuffer), NULL, 0, 0);
+
+            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;
-			s->s3->change_cipher_spec=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;
+                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;
+            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;
-				goto end;
-				}
-
-			if (!s->method->ssl3_enc->change_cipher_state(s,
-				SSL3_CHANGE_CIPHER_CLIENT_WRITE))
-				{
-				ret= -1;
-				goto end;
-				}
-			
+            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;
+                goto end;
+            }
+
+            if (!s->method->ssl3_enc->change_cipher_state(s,
+                                                          SSL3_CHANGE_CIPHER_CLIENT_WRITE))
+            {
+                ret = -1;
+                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=dtls1_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;
-
-			/* clear flags */
-			s->s3->flags&= ~SSL3_FLAGS_POP_BUFFER;
-			if (s->hit)
-				{
-				s->s3->tmp.next_state=SSL_ST_OK;
+            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;
+
+            /* clear flags */
+            s->s3->flags &= ~SSL3_FLAGS_POP_BUFFER;
+            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;
-					}
+                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
-				if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED)
-					{
-					s->state=SSL_ST_OK;
+                if (s->s3->flags & SSL3_FLAGS_DELAY_CLIENT_FINISHED) {
+                    s->state = SSL_ST_OK;
 #ifndef OPENSSL_NO_SCTP
-					if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
-						{
-							s->d1->next_state = SSL_ST_OK;
-							s->state=DTLS1_SCTP_ST_CW_WRITE_SOCK;
-						}
-#endif
-					s->s3->flags|=SSL3_FLAGS_POP_BUFFER;
-					s->s3->delay_buf_pop_ret=0;
-					}
-				}
-			else
-				{
+                    if (BIO_dgram_is_sctp(SSL_get_wbio(s))) {
+                        s->d1->next_state = SSL_ST_OK;
+                        s->state = DTLS1_SCTP_ST_CW_WRITE_SOCK;
+                    }
+#endif
+                    s->s3->flags |= SSL3_FLAGS_POP_BUFFER;
+                    s->s3->delay_buf_pop_ret = 0;
+                }
+            } 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
-
-#ifndef OPENSSL_NO_TLSEXT
-				/* Allow NewSessionTicket if ticket expected */
-				if (s->tlsext_ticket_expected)
-					s->s3->tmp.next_state=SSL3_ST_CR_SESSION_TICKET_A;
-				else
+                /*
+                 * 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
-				
-				s->s3->tmp.next_state=SSL3_ST_CR_FINISHED_A;
-				}
-			s->init_num=0;
-			break;
 
 #ifndef OPENSSL_NO_TLSEXT
-		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_FINISHED_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;
+                /*
+                 * Allow NewSessionTicket if ticket expected
+                 */
+                if (s->tlsext_ticket_expected)
+                    s->s3->tmp.next_state = SSL3_ST_CR_SESSION_TICKET_A;
+                else
 #endif
 
-		case SSL3_ST_CR_FINISHED_A:
-		case SSL3_ST_CR_FINISHED_B:
-			s->d1->change_cipher_spec_ok = 1;
-			ret=ssl3_get_finished(s,SSL3_ST_CR_FINISHED_A,
-				SSL3_ST_CR_FINISHED_B);
-			if (ret <= 0) goto end;
-			dtls1_stop_timer(s);
+                    s->s3->tmp.next_state = SSL3_ST_CR_FINISHED_A;
+            }
+            s->init_num = 0;
+            break;
 
-			if (s->hit)
-				s->state=SSL3_ST_CW_CHANGE_A;
-			else
-				s->state=SSL_ST_OK;
+#ifndef OPENSSL_NO_TLSEXT
+        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_FINISHED_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;
+#endif
+
+        case SSL3_ST_CR_FINISHED_A:
+        case SSL3_ST_CR_FINISHED_B:
+            s->d1->change_cipher_spec_ok = 1;
+            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);
+            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);
 
 #if 0
-			if (s->init_buf != NULL)
-				{
-				BUF_MEM_free(s->init_buf);
-				s->init_buf=NULL;
-				}
-#endif
+            if (s->init_buf != NULL) {
+                BUF_MEM_free(s->init_buf);
+                s->init_buf = NULL;
+            }
+#endif
+
+            /*
+             * If we are not 'joining' the last two packets, remove the
+             * buffering now
+             */
+            if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
+                ssl_free_wbio_buffer(s);
+            /* else do it later in ssl3_write */
+
+            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; */
+
+        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--;
 
-			/* If we are not 'joining' the last two packets,
-			 * remove the buffering now */
-			if (!(s->s3->flags & SSL3_FLAGS_POP_BUFFER))
-				ssl_free_wbio_buffer(s);
-			/* else do it later in ssl3_write */
-
-			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; */
-			
-		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);
+    /*
+     * 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
 
-	if (buf != NULL)
-		BUF_MEM_free(buf);
-	if (cb != NULL)
-		cb(s,SSL_CB_CONNECT_EXIT,ret);
-	return(ret);
-	}
-
-int dtls1_client_hello(SSL *s)
-	{
-	unsigned char *buf;
-	unsigned char *p,*d;
-	unsigned int i,j;
-	unsigned long l;
-	SSL_COMP *comp;
-
-	buf=(unsigned char *)s->init_buf->data;
-	if (s->state == SSL3_ST_CW_CLNT_HELLO_A)
-		{
-		SSL_SESSION *sess = s->session;
-		if ((s->session == NULL) ||
-			(s->session->ssl_version != s->version) ||
-#ifdef OPENSSL_NO_TLSEXT
-			!sess->session_id_length ||
-#else
-			(!sess->session_id_length && !sess->tlsext_tick) ||
-#endif
-			(s->session->not_resumable))
-			{
-			if (!ssl_get_new_session(s,0))
-				goto err;
-			}
-		/* else use the pre-loaded session */
-
-		p=s->s3->client_random;
-
-		/* if client_random is initialized, reuse it, we are
-		 * required to use same upon reply to HelloVerify */
-		for (i=0;p[i]=='\0' && i<sizeof(s->s3->client_random);i++)
-			;
-		if (i==sizeof(s->s3->client_random))
-			ssl_fill_hello_random(s, 0, p,
-					      sizeof(s->s3->client_random));
-
-		/* Do the message type and length last */
-		d=p= &(buf[DTLS1_HM_HEADER_LENGTH]);
-
-		*(p++)=s->version>>8;
-		*(p++)=s->version&0xff;
-		s->client_version=s->version;
-
-		/* Random stuff */
-		memcpy(p,s->s3->client_random,SSL3_RANDOM_SIZE);
-		p+=SSL3_RANDOM_SIZE;
-
-		/* Session ID */
-		if (s->new_session)
-			i=0;
-		else
-			i=s->session->session_id_length;
-		*(p++)=i;
-		if (i != 0)
-			{
-			if (i > sizeof s->session->session_id)
-				{
-				SSLerr(SSL_F_DTLS1_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
-				goto err;
-				}
-			memcpy(p,s->session->session_id,i);
-			p+=i;
-			}
-		
-		/* cookie stuff */
-		if ( s->d1->cookie_len > sizeof(s->d1->cookie))
-			{
-			SSLerr(SSL_F_DTLS1_CLIENT_HELLO, ERR_R_INTERNAL_ERROR);
-			goto err;
-			}
-		*(p++) = s->d1->cookie_len;
-		memcpy(p, s->d1->cookie, s->d1->cookie_len);
-		p += s->d1->cookie_len;
-
-		/* Ciphers supported */
-		i=ssl_cipher_list_to_bytes(s,SSL_get_ciphers(s),&(p[2]),0);
-		if (i == 0)
-			{
-			SSLerr(SSL_F_DTLS1_CLIENT_HELLO,SSL_R_NO_CIPHERS_AVAILABLE);
-			goto err;
-			}
-		s2n(i,p);
-		p+=i;
-
-		/* COMPRESSION */
-		if (s->ctx->comp_methods == NULL)
-			j=0;
-		else
-			j=sk_SSL_COMP_num(s->ctx->comp_methods);
-		*(p++)=1+j;
-		for (i=0; i<j; i++)
-			{
-			comp=sk_SSL_COMP_value(s->ctx->comp_methods,i);
-			*(p++)=comp->id;
-			}
-		*(p++)=0; /* Add the NULL method */
-
-#ifndef OPENSSL_NO_TLSEXT
-		/* TLS extensions*/
-		if (ssl_prepare_clienthello_tlsext(s) <= 0)
-			{
-			SSLerr(SSL_F_DTLS1_CLIENT_HELLO,SSL_R_CLIENTHELLO_TLSEXT);
-			goto err;
-			}
-		if ((p = ssl_add_clienthello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
-			{
-			SSLerr(SSL_F_DTLS1_CLIENT_HELLO,ERR_R_INTERNAL_ERROR);
-			goto err;
-			}
-#endif
-
-		l=(p-d);
-		d=buf;
-
-		d = dtls1_set_message_header(s, d, SSL3_MT_CLIENT_HELLO, l, 0, l);
-
-		s->state=SSL3_ST_CW_CLNT_HELLO_B;
-		/* number of bytes to write */
-		s->init_num=p-buf;
-		s->init_off=0;
-
-		/* buffer the message to handle re-xmits */
-		dtls1_buffer_message(s, 0);
-		}
-
-	/* SSL3_ST_CW_CLNT_HELLO_B */
-	return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
-	return(-1);
-	}
+    if (buf != NULL)
+        BUF_MEM_free(buf);
+    if (cb != NULL)
+        cb(s, SSL_CB_CONNECT_EXIT, ret);
+    return (ret);
+}
 
 static int dtls1_get_hello_verify(SSL *s)
-	{
-	int n, al, ok = 0;
-	unsigned char *data;
-	unsigned int cookie_len;
-
-	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);
-
-	if (!ok) return((int)n);
-
-	if (s->s3->tmp.message_type != DTLS1_MT_HELLO_VERIFY_REQUEST)
-		{
-		s->d1->send_cookie = 0;
-		s->s3->tmp.reuse_message=1;
-		return(1);
-		}
-
-	data = (unsigned char *)s->init_msg;
-
-	if ((data[0] != (s->version>>8)) || (data[1] != (s->version&0xff)))
-		{
-		SSLerr(SSL_F_DTLS1_GET_HELLO_VERIFY,SSL_R_WRONG_SSL_VERSION);
-		s->version=(s->version&0xff00)|data[1];
-		al = SSL_AD_PROTOCOL_VERSION;
-		goto f_err;
-		}
-	data+=2;
-
-	cookie_len = *(data++);
-	if ( cookie_len > sizeof(s->d1->cookie))
-		{
-		al=SSL_AD_ILLEGAL_PARAMETER;
-		goto f_err;
-		}
-
-	memcpy(s->d1->cookie, data, cookie_len);
-	s->d1->cookie_len = cookie_len;
-
-	s->d1->send_cookie = 1;
-	return 1;
-
-f_err:
-	ssl3_send_alert(s, SSL3_AL_FATAL, al);
-	return -1;
-	}
-
-int dtls1_send_client_key_exchange(SSL *s)
-	{
-	unsigned char *p,*d;
-	int n;
-	unsigned long alg_k;
-#ifndef OPENSSL_NO_RSA
-	unsigned char *q;
-	EVP_PKEY *pkey=NULL;
-#endif
-#ifndef OPENSSL_NO_KRB5
-        KSSL_ERR kssl_err;
-#endif /* OPENSSL_NO_KRB5 */
-#ifndef OPENSSL_NO_ECDH
-	EC_KEY *clnt_ecdh = NULL;
-	const EC_POINT *srvr_ecpoint = NULL;
-	EVP_PKEY *srvr_pub_pkey = NULL;
-	unsigned char *encodedPoint = NULL;
-	int encoded_pt_len = 0;
-	BN_CTX * bn_ctx = NULL;
-#endif
-
-	if (s->state == SSL3_ST_CW_KEY_EXCH_A)
-		{
-		d=(unsigned char *)s->init_buf->data;
-		p= &(d[DTLS1_HM_HEADER_LENGTH]);
-		
-		alg_k=s->s3->tmp.new_cipher->algorithm_mkey;
-
-                /* Fool emacs indentation */
-                if (0) {}
-#ifndef OPENSSL_NO_RSA
-		else if (alg_k & SSL_kRSA)
-			{
-			RSA *rsa;
-			unsigned char tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
-
-			if (s->session->sess_cert == NULL)
-				{
-				/* We should always have a server certificate with SSL_kRSA. */
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
-				goto err;
-				}
-
-			if (s->session->sess_cert->peer_rsa_tmp != NULL)
-				rsa=s->session->sess_cert->peer_rsa_tmp;
-			else
-				{
-				pkey=X509_get_pubkey(s->session->sess_cert->peer_pkeys[SSL_PKEY_RSA_ENC].x509);
-				if ((pkey == NULL) ||
-					(pkey->type != EVP_PKEY_RSA) ||
-					(pkey->pkey.rsa == NULL))
-					{
-					SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
-					goto err;
-					}
-				rsa=pkey->pkey.rsa;
-				EVP_PKEY_free(pkey);
-				}
-				
-			tmp_buf[0]=s->client_version>>8;
-			tmp_buf[1]=s->client_version&0xff;
-			if (RAND_bytes(&(tmp_buf[2]),sizeof tmp_buf-2) <= 0)
-					goto err;
-
-			s->session->master_key_length=sizeof tmp_buf;
-
-			q=p;
-			/* Fix buf for TLS and [incidentally] DTLS */
-			if (s->version > SSL3_VERSION)
-				p+=2;
-			n=RSA_public_encrypt(sizeof tmp_buf,
-				tmp_buf,p,rsa,RSA_PKCS1_PADDING);
-#ifdef PKCS1_CHECK
-			if (s->options & SSL_OP_PKCS1_CHECK_1) p[1]++;
-			if (s->options & SSL_OP_PKCS1_CHECK_2) tmp_buf[0]=0x70;
-#endif
-			if (n <= 0)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,SSL_R_BAD_RSA_ENCRYPT);
-				goto err;
-				}
-
-			/* Fix buf for TLS and [incidentally] DTLS */
-			if (s->version > SSL3_VERSION)
-				{
-				s2n(n,q);
-				n+=2;
-				}
-
-			s->session->master_key_length=
-				s->method->ssl3_enc->generate_master_secret(s,
-					s->session->master_key,
-					tmp_buf,sizeof tmp_buf);
-			OPENSSL_cleanse(tmp_buf,sizeof tmp_buf);
-			}
-#endif
-#ifndef OPENSSL_NO_KRB5
-		else if (alg_k & SSL_kKRB5)
-                        {
-                        krb5_error_code	krb5rc;
-                        KSSL_CTX	*kssl_ctx = s->kssl_ctx;
-                        /*  krb5_data	krb5_ap_req;  */
-                        krb5_data	*enc_ticket;
-                        krb5_data	authenticator, *authp = NULL;
-			EVP_CIPHER_CTX	ciph_ctx;
-			const EVP_CIPHER *enc = NULL;
-			unsigned char	iv[EVP_MAX_IV_LENGTH];
-			unsigned char	tmp_buf[SSL_MAX_MASTER_KEY_LENGTH];
-			unsigned char	epms[SSL_MAX_MASTER_KEY_LENGTH 
-						+ EVP_MAX_IV_LENGTH];
-			int 		padl, outl = sizeof(epms);
-
-			EVP_CIPHER_CTX_init(&ciph_ctx);
-
-#ifdef KSSL_DEBUG
-                        printf("ssl3_send_client_key_exchange(%lx & %lx)\n",
-                                alg_k, SSL_kKRB5);
-#endif	/* KSSL_DEBUG */
-
-			authp = NULL;
-#ifdef KRB5SENDAUTH
-			if (KRB5SENDAUTH)  authp = &authenticator;
-#endif	/* KRB5SENDAUTH */
-
-                        krb5rc = kssl_cget_tkt(kssl_ctx, &enc_ticket, authp,
-				&kssl_err);
-			enc = kssl_map_enc(kssl_ctx->enctype);
-                        if (enc == NULL)
-                            goto err;
-#ifdef KSSL_DEBUG
-                        {
-                        printf("kssl_cget_tkt rtn %d\n", krb5rc);
-                        if (krb5rc && kssl_err.text)
-			  printf("kssl_cget_tkt kssl_err=%s\n", kssl_err.text);
-                        }
-#endif	/* KSSL_DEBUG */
-
-                        if (krb5rc)
-                                {
-                                ssl3_send_alert(s,SSL3_AL_FATAL,
-						SSL_AD_HANDSHAKE_FAILURE);
-                                SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-						kssl_err.reason);
-                                goto err;
-                                }
-
-			/*  20010406 VRS - Earlier versions used KRB5 AP_REQ
-			**  in place of RFC 2712 KerberosWrapper, as in:
-			**
-                        **  Send ticket (copy to *p, set n = length)
-                        **  n = krb5_ap_req.length;
-                        **  memcpy(p, krb5_ap_req.data, krb5_ap_req.length);
-                        **  if (krb5_ap_req.data)  
-                        **    kssl_krb5_free_data_contents(NULL,&krb5_ap_req);
-                        **
-			**  Now using real RFC 2712 KerberosWrapper
-			**  (Thanks to Simon Wilkinson <sxw@sxw.org.uk>)
-			**  Note: 2712 "opaque" types are here replaced
-			**  with a 2-byte length followed by the value.
-			**  Example:
-			**  KerberosWrapper= xx xx asn1ticket 0 0 xx xx encpms
-			**  Where "xx xx" = length bytes.  Shown here with
-			**  optional authenticator omitted.
-			*/
-
-			/*  KerberosWrapper.Ticket		*/
-			s2n(enc_ticket->length,p);
-			memcpy(p, enc_ticket->data, enc_ticket->length);
-			p+= enc_ticket->length;
-			n = enc_ticket->length + 2;
-
-			/*  KerberosWrapper.Authenticator	*/
-			if (authp  &&  authp->length)  
-				{
-				s2n(authp->length,p);
-				memcpy(p, authp->data, authp->length);
-				p+= authp->length;
-				n+= authp->length + 2;
-				
-				free(authp->data);
-				authp->data = NULL;
-				authp->length = 0;
-				}
-			else
-				{
-				s2n(0,p);/*  null authenticator length	*/
-				n+=2;
-				}
- 
-			if (RAND_bytes(tmp_buf,sizeof tmp_buf) <= 0)
-			    goto err;
-
-			/*  20010420 VRS.  Tried it this way; failed.
-			**	EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,NULL);
-			**	EVP_CIPHER_CTX_set_key_length(&ciph_ctx,
-			**				kssl_ctx->length);
-			**	EVP_EncryptInit_ex(&ciph_ctx,NULL, key,iv);
-			*/
-
-			memset(iv, 0, sizeof iv);  /* per RFC 1510 */
-			EVP_EncryptInit_ex(&ciph_ctx,enc, NULL,
-				kssl_ctx->key,iv);
-			EVP_EncryptUpdate(&ciph_ctx,epms,&outl,tmp_buf,
-				sizeof tmp_buf);
-			EVP_EncryptFinal_ex(&ciph_ctx,&(epms[outl]),&padl);
-			outl += padl;
-			if (outl > (int)sizeof epms)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
-				goto err;
-				}
-			EVP_CIPHER_CTX_cleanup(&ciph_ctx);
-
-			/*  KerberosWrapper.EncryptedPreMasterSecret	*/
-			s2n(outl,p);
-			memcpy(p, epms, outl);
-			p+=outl;
-			n+=outl + 2;
-
-                        s->session->master_key_length=
-                                s->method->ssl3_enc->generate_master_secret(s,
-					s->session->master_key,
-					tmp_buf, sizeof tmp_buf);
-
-			OPENSSL_cleanse(tmp_buf, sizeof tmp_buf);
-			OPENSSL_cleanse(epms, outl);
-                        }
-#endif
-#ifndef OPENSSL_NO_DH
-		else if (alg_k & (SSL_kEDH|SSL_kDHr|SSL_kDHd))
-			{
-			DH *dh_srvr,*dh_clnt;
-
-			if (s->session->sess_cert == NULL)
-				{
-				ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
-				goto err;
-				}
-
-			if (s->session->sess_cert->peer_dh_tmp != NULL)
-				dh_srvr=s->session->sess_cert->peer_dh_tmp;
-			else
-				{
-				/* we get them from the cert */
-				ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNABLE_TO_FIND_DH_PARAMETERS);
-				goto err;
-				}
-			
-			/* generate a new random key */
-			if ((dh_clnt=DHparams_dup(dh_srvr)) == NULL)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
-				goto err;
-				}
-			if (!DH_generate_key(dh_clnt))
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
-				goto err;
-				}
-
-			/* use the 'p' output buffer for the DH key, but
-			 * make sure to clear it out afterwards */
-
-			n=DH_compute_key(p,dh_srvr->pub_key,dh_clnt);
-
-			if (n <= 0)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_DH_LIB);
-				goto err;
-				}
-
-			/* generate master key from the result */
-			s->session->master_key_length=
-				s->method->ssl3_enc->generate_master_secret(s,
-					s->session->master_key,p,n);
-			/* clean up */
-			memset(p,0,n);
-
-			/* send off the data */
-			n=BN_num_bytes(dh_clnt->pub_key);
-			s2n(n,p);
-			BN_bn2bin(dh_clnt->pub_key,p);
-			n+=2;
-
-			DH_free(dh_clnt);
-
-			/* perhaps clean things up a bit EAY EAY EAY EAY*/
-			}
-#endif
-#ifndef OPENSSL_NO_ECDH 
-		else if (alg_k & (SSL_kEECDH|SSL_kECDHr|SSL_kECDHe))
-			{
-			const EC_GROUP *srvr_group = NULL;
-			EC_KEY *tkey;
-			int ecdh_clnt_cert = 0;
-			int field_size = 0;
-
-			if (s->session->sess_cert == NULL)
-				{
-				ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_UNEXPECTED_MESSAGE);
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,SSL_R_UNEXPECTED_MESSAGE);
-				goto err;
-				}
-
-			/* Did we send out the client's
-			 * ECDH share for use in premaster
-			 * computation as part of client certificate?
-			 * If so, set ecdh_clnt_cert to 1.
-			 */
-			if ((alg_k & (SSL_kECDHr|SSL_kECDHe)) && (s->cert != NULL)) 
-				{
-				/* XXX: For now, we do not support client
-				 * authentication using ECDH certificates.
-				 * To add such support, one needs to add
-				 * code that checks for appropriate 
-				 * conditions and sets ecdh_clnt_cert to 1.
-				 * For example, the cert have an ECC
-				 * key on the same curve as the server's
-				 * and the key should be authorized for
-				 * key agreement.
-				 *
-				 * One also needs to add code in ssl3_connect
-				 * to skip sending the certificate verify
-				 * message.
-				 *
-				 * if ((s->cert->key->privatekey != NULL) &&
-				 *     (s->cert->key->privatekey->type ==
-				 *      EVP_PKEY_EC) && ...)
-				 * ecdh_clnt_cert = 1;
-				 */
-				}
-
-			if (s->session->sess_cert->peer_ecdh_tmp != NULL)
-				{
-				tkey = s->session->sess_cert->peer_ecdh_tmp;
-				}
-			else
-				{
-				/* Get the Server Public Key from Cert */
-				srvr_pub_pkey = X509_get_pubkey(s->session-> \
-				    sess_cert->peer_pkeys[SSL_PKEY_ECC].x509);
-				if ((srvr_pub_pkey == NULL) ||
-				    (srvr_pub_pkey->type != EVP_PKEY_EC) ||
-				    (srvr_pub_pkey->pkey.ec == NULL))
-					{
-					SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-					    ERR_R_INTERNAL_ERROR);
-					goto err;
-					}
-
-				tkey = srvr_pub_pkey->pkey.ec;
-				}
-
-			srvr_group   = EC_KEY_get0_group(tkey);
-			srvr_ecpoint = EC_KEY_get0_public_key(tkey);
-
-			if ((srvr_group == NULL) || (srvr_ecpoint == NULL))
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-				    ERR_R_INTERNAL_ERROR);
-				goto err;
-				}
-
-			if ((clnt_ecdh=EC_KEY_new()) == NULL) 
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
-				goto err;
-				}
-
-			if (!EC_KEY_set_group(clnt_ecdh, srvr_group))
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
-				goto err;
-				}
-			if (ecdh_clnt_cert) 
-				{ 
-				/* Reuse key info from our certificate
-				 * We only need our private key to perform
-				 * the ECDH computation.
-				 */
-				const BIGNUM *priv_key;
-				tkey = s->cert->key->privatekey->pkey.ec;
-				priv_key = EC_KEY_get0_private_key(tkey);
-				if (priv_key == NULL)
-					{
-					SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
-					goto err;
-					}
-				if (!EC_KEY_set_private_key(clnt_ecdh, priv_key))
-					{
-					SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_EC_LIB);
-					goto err;
-					}
-				}
-			else 
-				{
-				/* Generate a new ECDH key pair */
-				if (!(EC_KEY_generate_key(clnt_ecdh)))
-					{
-					SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, ERR_R_ECDH_LIB);
-					goto err;
-					}
-				}
-
-			/* use the 'p' output buffer for the ECDH key, but
-			 * make sure to clear it out afterwards
-			 */
-
-			field_size = EC_GROUP_get_degree(srvr_group);
-			if (field_size <= 0)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, 
-				       ERR_R_ECDH_LIB);
-				goto err;
-				}
-			n=ECDH_compute_key(p, (field_size+7)/8, srvr_ecpoint, clnt_ecdh, NULL);
-			if (n <= 0)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE, 
-				       ERR_R_ECDH_LIB);
-				goto err;
-				}
-
-			/* generate master key from the result */
-			s->session->master_key_length = s->method->ssl3_enc \
-			    -> generate_master_secret(s, 
-				s->session->master_key,
-				p, n);
-
-			memset(p, 0, n); /* clean up */
-
-			if (ecdh_clnt_cert) 
-				{
-				/* Send empty client key exch message */
-				n = 0;
-				}
-			else 
-				{
-				/* First check the size of encoding and
-				 * allocate memory accordingly.
-				 */
-				encoded_pt_len = 
-				    EC_POINT_point2oct(srvr_group, 
-					EC_KEY_get0_public_key(clnt_ecdh), 
-					POINT_CONVERSION_UNCOMPRESSED, 
-					NULL, 0, NULL);
-
-				encodedPoint = (unsigned char *) 
-				    OPENSSL_malloc(encoded_pt_len * 
-					sizeof(unsigned char)); 
-				bn_ctx = BN_CTX_new();
-				if ((encodedPoint == NULL) || 
-				    (bn_ctx == NULL)) 
-					{
-					SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
-					goto err;
-					}
-
-				/* Encode the public key */
-				n = EC_POINT_point2oct(srvr_group, 
-				    EC_KEY_get0_public_key(clnt_ecdh), 
-				    POINT_CONVERSION_UNCOMPRESSED, 
-				    encodedPoint, encoded_pt_len, bn_ctx);
-
-				*p = n; /* length of encoded point */
-				/* Encoded point will be copied here */
-				p += 1; 
-				/* copy the point */
-				memcpy((unsigned char *)p, encodedPoint, n);
-				/* increment n to account for length field */
-				n += 1; 
-				}
-
-			/* Free allocated memory */
-			BN_CTX_free(bn_ctx);
-			if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
-			if (clnt_ecdh != NULL) 
-				 EC_KEY_free(clnt_ecdh);
-			EVP_PKEY_free(srvr_pub_pkey);
-			}
-#endif /* !OPENSSL_NO_ECDH */
-
-#ifndef OPENSSL_NO_PSK
-		else if (alg_k & SSL_kPSK)
-			{
-			char identity[PSK_MAX_IDENTITY_LEN];
-			unsigned char *t = NULL;
-			unsigned char psk_or_pre_ms[PSK_MAX_PSK_LEN*2+4];
-			unsigned int pre_ms_len = 0, psk_len = 0;
-			int psk_err = 1;
-
-			n = 0;
-			if (s->psk_client_callback == NULL)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-					SSL_R_PSK_NO_CLIENT_CB);
-				goto err;
-				}
-
-			psk_len = s->psk_client_callback(s, s->ctx->psk_identity_hint,
-				identity, PSK_MAX_IDENTITY_LEN,
-				psk_or_pre_ms, sizeof(psk_or_pre_ms));
-			if (psk_len > PSK_MAX_PSK_LEN)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-					ERR_R_INTERNAL_ERROR);
-				goto psk_err;
-				}
-			else if (psk_len == 0)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-					SSL_R_PSK_IDENTITY_NOT_FOUND);
-				goto psk_err;
-				}
-
-			/* create PSK pre_master_secret */
-			pre_ms_len = 2+psk_len+2+psk_len;
-			t = psk_or_pre_ms;
-			memmove(psk_or_pre_ms+psk_len+4, psk_or_pre_ms, psk_len);
-			s2n(psk_len, t);
-			memset(t, 0, psk_len);
-			t+=psk_len;
-			s2n(psk_len, t);
-
-			if (s->session->psk_identity_hint != NULL)
-				OPENSSL_free(s->session->psk_identity_hint);
-			s->session->psk_identity_hint = BUF_strdup(s->ctx->psk_identity_hint);
-			if (s->ctx->psk_identity_hint != NULL &&
-				s->session->psk_identity_hint == NULL)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-					ERR_R_MALLOC_FAILURE);
-				goto psk_err;
-				}
-
-			if (s->session->psk_identity != NULL)
-				OPENSSL_free(s->session->psk_identity);
-			s->session->psk_identity = BUF_strdup(identity);
-			if (s->session->psk_identity == NULL)
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,
-					ERR_R_MALLOC_FAILURE);
-				goto psk_err;
-				}
-
-			s->session->master_key_length =
-				s->method->ssl3_enc->generate_master_secret(s,
-					s->session->master_key,
-					psk_or_pre_ms, pre_ms_len); 
-			n = strlen(identity);
-			s2n(n, p);
-			memcpy(p, identity, n);
-			n+=2;
-			psk_err = 0;
-		psk_err:
-			OPENSSL_cleanse(identity, PSK_MAX_IDENTITY_LEN);
-			OPENSSL_cleanse(psk_or_pre_ms, sizeof(psk_or_pre_ms));
-			if (psk_err != 0)
-				{
-				ssl3_send_alert(s, SSL3_AL_FATAL, SSL_AD_HANDSHAKE_FAILURE);
-				goto err;
-				}
-			}
-#endif
-		else
-			{
-			ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_HANDSHAKE_FAILURE);
-			SSLerr(SSL_F_DTLS1_SEND_CLIENT_KEY_EXCHANGE,ERR_R_INTERNAL_ERROR);
-			goto err;
-			}
-		
-		d = dtls1_set_message_header(s, d,
-		SSL3_MT_CLIENT_KEY_EXCHANGE, n, 0, n);
-		/*
-		 *(d++)=SSL3_MT_CLIENT_KEY_EXCHANGE;
-		 l2n3(n,d);
-		 l2n(s->d1->handshake_write_seq,d);
-		 s->d1->handshake_write_seq++;
-		*/
-		
-		s->state=SSL3_ST_CW_KEY_EXCH_B;
-		/* number of bytes to write */
-		s->init_num=n+DTLS1_HM_HEADER_LENGTH;
-		s->init_off=0;
-
-		/* buffer the message to handle re-xmits */
-		dtls1_buffer_message(s, 0);
-		}
-	
-	/* SSL3_ST_CW_KEY_EXCH_B */
-	return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
-#ifndef OPENSSL_NO_ECDH
-	BN_CTX_free(bn_ctx);
-	if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
-	if (clnt_ecdh != NULL) 
-		EC_KEY_free(clnt_ecdh);
-	EVP_PKEY_free(srvr_pub_pkey);
-#endif
-	return(-1);
-	}
-
-int dtls1_send_client_verify(SSL *s)
-	{
-	unsigned char *p,*d;
-	unsigned char data[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
-	EVP_PKEY *pkey;
-#ifndef OPENSSL_NO_RSA
-	unsigned u=0;
-#endif
-	unsigned long n;
-#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA)
-	int j;
-#endif
-
-	if (s->state == SSL3_ST_CW_CERT_VRFY_A)
-		{
-		d=(unsigned char *)s->init_buf->data;
-		p= &(d[DTLS1_HM_HEADER_LENGTH]);
-		pkey=s->cert->key->privatekey;
-
-		s->method->ssl3_enc->cert_verify_mac(s,
-		NID_sha1,
-			&(data[MD5_DIGEST_LENGTH]));
-
-#ifndef OPENSSL_NO_RSA
-		if (pkey->type == EVP_PKEY_RSA)
-			{
-			s->method->ssl3_enc->cert_verify_mac(s,
-				NID_md5,
-				&(data[0]));
-			if (RSA_sign(NID_md5_sha1, data,
-					 MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH,
-					&(p[2]), &u, pkey->pkey.rsa) <= 0 )
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_RSA_LIB);
-				goto err;
-				}
-			s2n(u,p);
-			n=u+2;
-			}
-		else
-#endif
-#ifndef OPENSSL_NO_DSA
-			if (pkey->type == EVP_PKEY_DSA)
-			{
-			if (!DSA_sign(pkey->save_type,
-				&(data[MD5_DIGEST_LENGTH]),
-				SHA_DIGEST_LENGTH,&(p[2]),
-				(unsigned int *)&j,pkey->pkey.dsa))
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_DSA_LIB);
-				goto err;
-				}
-			s2n(j,p);
-			n=j+2;
-			}
-		else
-#endif
-#ifndef OPENSSL_NO_ECDSA
-			if (pkey->type == EVP_PKEY_EC)
-			{
-			if (!ECDSA_sign(pkey->save_type,
-				&(data[MD5_DIGEST_LENGTH]),
-				SHA_DIGEST_LENGTH,&(p[2]),
-				(unsigned int *)&j,pkey->pkey.ec))
-				{
-				SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,
-				    ERR_R_ECDSA_LIB);
-				goto err;
-				}
-			s2n(j,p);
-			n=j+2;
-			}
-		else
-#endif
-			{
-			SSLerr(SSL_F_DTLS1_SEND_CLIENT_VERIFY,ERR_R_INTERNAL_ERROR);
-			goto err;
-			}
-
-		d = dtls1_set_message_header(s, d,
-			SSL3_MT_CERTIFICATE_VERIFY, n, 0, n) ;
-
-		s->init_num=(int)n+DTLS1_HM_HEADER_LENGTH;
-		s->init_off=0;
-
-		/* buffer the message to handle re-xmits */
-		dtls1_buffer_message(s, 0);
-
-		s->state = SSL3_ST_CW_CERT_VRFY_B;
-		}
-
-	/* s->state = SSL3_ST_CW_CERT_VRFY_B */
-	return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
-	return(-1);
-	}
-
-int dtls1_send_client_certificate(SSL *s)
-	{
-	X509 *x509=NULL;
-	EVP_PKEY *pkey=NULL;
-	int i;
-	unsigned long l;
-
-	if (s->state ==	SSL3_ST_CW_CERT_A)
-		{
-		if ((s->cert == NULL) ||
-			(s->cert->key->x509 == NULL) ||
-			(s->cert->key->privatekey == NULL))
-			s->state=SSL3_ST_CW_CERT_B;
-		else
-			s->state=SSL3_ST_CW_CERT_C;
-		}
-
-	/* We need to get a client cert */
-	if (s->state == SSL3_ST_CW_CERT_B)
-		{
-		/* If we get an error, we need to
-		 * ssl->rwstate=SSL_X509_LOOKUP; return(-1);
-		 * We then get retied later */
-		i=0;
-		i = ssl_do_client_cert_cb(s, &x509, &pkey);
-		if (i < 0)
-			{
-			s->rwstate=SSL_X509_LOOKUP;
-			return(-1);
-			}
-		s->rwstate=SSL_NOTHING;
-		if ((i == 1) && (pkey != NULL) && (x509 != NULL))
-			{
-			s->state=SSL3_ST_CW_CERT_B;
-			if (	!SSL_use_certificate(s,x509) ||
-				!SSL_use_PrivateKey(s,pkey))
-				i=0;
-			}
-		else if (i == 1)
-			{
-			i=0;
-			SSLerr(SSL_F_DTLS1_SEND_CLIENT_CERTIFICATE,SSL_R_BAD_DATA_RETURNED_BY_CALLBACK);
-			}
-
-		if (x509 != NULL) X509_free(x509);
-		if (pkey != NULL) EVP_PKEY_free(pkey);
-		if (i == 0)
-			{
-			if (s->version == SSL3_VERSION)
-				{
-				s->s3->tmp.cert_req=0;
-				ssl3_send_alert(s,SSL3_AL_WARNING,SSL_AD_NO_CERTIFICATE);
-				return(1);
-				}
-			else
-				{
-				s->s3->tmp.cert_req=2;
-				}
-			}
-
-		/* Ok, we have a cert */
-		s->state=SSL3_ST_CW_CERT_C;
-		}
-
-	if (s->state == SSL3_ST_CW_CERT_C)
-		{
-		s->state=SSL3_ST_CW_CERT_D;
-		l=dtls1_output_cert_chain(s,
-			(s->s3->tmp.cert_req == 2)?NULL:s->cert->key->x509);
-		s->init_num=(int)l;
-		s->init_off=0;
-
-		/* set header called by dtls1_output_cert_chain() */
-
-		/* buffer the message to handle re-xmits */
-		dtls1_buffer_message(s, 0);
-		}
-	/* SSL3_ST_CW_CERT_D */
-	return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-	}
+{
+    int n, al, ok = 0;
+    unsigned char *data;
+    unsigned int cookie_len;
+
+    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);
+
+    if (s->s3->tmp.message_type != DTLS1_MT_HELLO_VERIFY_REQUEST) {
+        s->d1->send_cookie = 0;
+        s->s3->tmp.reuse_message = 1;
+        return (1);
+    }
+
+    data = (unsigned char *)s->init_msg;
+#if 0
+    if (s->method->version != DTLS_ANY_VERSION &&
+        ((data[0] != (s->version >> 8)) || (data[1] != (s->version & 0xff))))
+    {
+        SSLerr(SSL_F_DTLS1_GET_HELLO_VERIFY, SSL_R_WRONG_SSL_VERSION);
+        s->version = (s->version & 0xff00) | data[1];
+        al = SSL_AD_PROTOCOL_VERSION;
+        goto f_err;
+    }
+#endif
+    data += 2;
+
+    cookie_len = *(data++);
+    if (cookie_len > sizeof(s->d1->cookie)) {
+        al = SSL_AD_ILLEGAL_PARAMETER;
+        goto f_err;
+    }
+
+    memcpy(s->d1->cookie, data, cookie_len);
+    s->d1->cookie_len = cookie_len;
+
+    s->d1->send_cookie = 1;
+    return 1;
+
+ f_err:
+    ssl3_send_alert(s, SSL3_AL_FATAL, al);
+    return -1;
+}