Fix another gmt_unix_time case in server_random
[openssl.git] / ssl / d1_srvr.c
index 608502d..d3afec9 100644 (file)
@@ -133,14 +133,32 @@ static const SSL_METHOD *dtls1_get_server_method(int ver)
        {
        if (ver == DTLS1_VERSION)
                return(DTLSv1_server_method());
+       else if (ver == DTLS1_2_VERSION)
+               return(DTLSv1_2_server_method());
        else
                return(NULL);
        }
 
-IMPLEMENT_dtls1_meth_func(DTLSv1_server_method,
+IMPLEMENT_dtls1_meth_func(DTLS1_VERSION,
+                       DTLSv1_server_method,
                        dtls1_accept,
                        ssl_undefined_function,
-                       dtls1_get_server_method)
+                       dtls1_get_server_method,
+                       DTLSv1_enc_data)
+
+IMPLEMENT_dtls1_meth_func(DTLS1_2_VERSION,
+                       DTLSv1_2_server_method,
+                       dtls1_accept,
+                       ssl_undefined_function,
+                       dtls1_get_server_method,
+                       DTLSv1_2_enc_data)
+
+IMPLEMENT_dtls1_meth_func(DTLS_ANY_VERSION,
+                       DTLS_server_method,
+                       dtls1_accept,
+                       ssl_undefined_function,
+                       dtls1_get_server_method,
+                       DTLSv1_2_enc_data)
 
 int dtls1_accept(SSL *s)
        {
@@ -151,6 +169,10 @@ int dtls1_accept(SSL *s)
        int ret= -1;
        int new_state,state,skip=0;
        int listen;
+#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();
@@ -168,6 +190,13 @@ int dtls1_accept(SSL *s)
        if (!SSL_in_init(s) || SSL_in_before(s)) SSL_clear(s);
 
        s->d1->listen = listen;
+#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
 
        if (s->cert == NULL)
                {
@@ -175,6 +204,19 @@ int dtls1_accept(SSL *s)
                return(-1);
                }
 
+#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;
@@ -227,8 +269,12 @@ int dtls1_accept(SSL *s)
                                {
                                /* Ok, we now need to push on a buffering BIO so that
                                 * the output is sent in a way that TCP likes :-)
+                                * ...but not with SCTP :-)
                                 */
-                               if (!ssl_init_wbio_buffer(s,1)) { ret= -1; goto end; }
+#ifndef OPENSSL_NO_SCTP
+                               if (!BIO_dgram_is_sctp(SSL_get_wbio(s)))
+#endif
+                                       if (!ssl_init_wbio_buffer(s,1)) { ret= -1; goto end; }
 
                                ssl3_init_finished_mac(s);
                                s->state=SSL3_ST_SR_CLNT_HELLO_A;
@@ -248,10 +294,11 @@ int dtls1_accept(SSL *s)
                case SSL3_ST_SW_HELLO_REQ_B:
 
                        s->shutdown=0;
+                       dtls1_clear_record_buffer(s);
                        dtls1_start_timer(s);
-                       ret=dtls1_send_hello_request(s);
+                       ret=ssl3_send_hello_request(s);
                        if (ret <= 0) goto end;
-                       s->s3->tmp.next_state=SSL3_ST_SW_HELLO_REQ_C;
+                       s->s3->tmp.next_state=SSL3_ST_SR_CLNT_HELLO_A;
                        s->state=SSL3_ST_SW_FLUSH;
                        s->init_num=0;
 
@@ -313,25 +360,75 @@ int dtls1_accept(SSL *s)
                                ssl3_init_finished_mac(s);
                        break;
                        
+#ifndef OPENSSL_NO_SCTP
+               case DTLS1_SCTP_ST_SR_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=SSL3_ST_SR_FINISHED_A;
+                       break;
+                       
+               case DTLS1_SCTP_ST_SW_WRITE_SOCK:
+                       ret = BIO_dgram_sctp_wait_for_dry(SSL_get_wbio(s));
+                       if (ret < 0) goto end;
+                       
+                       if (ret == 0)
+                               {
+                               if (s->d1->next_state != SSL_ST_OK)
+                                       {
+                                       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_SW_SRVR_HELLO_A:
                case SSL3_ST_SW_SRVR_HELLO_B:
                        s->renegotiate = 2;
                        dtls1_start_timer(s);
-                       ret=dtls1_send_server_hello(s);
+                       ret=ssl3_send_server_hello(s);
                        if (ret <= 0) goto end;
 
-#ifndef OPENSSL_NO_TLSEXT
                        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
+#ifndef OPENSSL_NO_TLSEXT
                                if (s->tlsext_ticket_expected)
                                        s->state=SSL3_ST_SW_SESSION_TICKET_A;
                                else
                                        s->state=SSL3_ST_SW_CHANGE_A;
-                               }
 #else
-                       if (s->hit)
-                                       s->state=SSL3_ST_SW_CHANGE_A;
+                               s->state=SSL3_ST_SW_CHANGE_A;
 #endif
+                               }
                        else
                                s->state=SSL3_ST_SW_CERT_A;
                        s->init_num=0;
@@ -344,7 +441,7 @@ int dtls1_accept(SSL *s)
                                && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
                                {
                                dtls1_start_timer(s);
-                               ret=dtls1_send_server_certificate(s);
+                               ret=ssl3_send_server_certificate(s);
                                if (ret <= 0) goto end;
 #ifndef OPENSSL_NO_TLSEXT
                                if (s->tlsext_status_expected)
@@ -406,7 +503,7 @@ int dtls1_accept(SSL *s)
                            )
                                {
                                dtls1_start_timer(s);
-                               ret=dtls1_send_server_key_exchange(s);
+                               ret=ssl3_send_server_key_exchange(s);
                                if (ret <= 0) goto end;
                                }
                        else
@@ -441,18 +538,39 @@ int dtls1_accept(SSL *s)
                                skip=1;
                                s->s3->tmp.cert_request=0;
                                s->state=SSL3_ST_SW_SRVR_DONE_A;
+#ifndef OPENSSL_NO_SCTP
+                               if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
+                                       {
+                                       s->d1->next_state = SSL3_ST_SW_SRVR_DONE_A;
+                                       s->state = DTLS1_SCTP_ST_SW_WRITE_SOCK;
+                                       }
+#endif
                                }
                        else
                                {
                                s->s3->tmp.cert_request=1;
                                dtls1_start_timer(s);
-                               ret=dtls1_send_certificate_request(s);
+                               ret=ssl3_send_certificate_request(s);
                                if (ret <= 0) goto end;
 #ifndef NETSCAPE_HANG_BUG
                                s->state=SSL3_ST_SW_SRVR_DONE_A;
+#ifndef OPENSSL_NO_SCTP
+                               if (BIO_dgram_is_sctp(SSL_get_wbio(s)))
+                                       {
+                                       s->d1->next_state = SSL3_ST_SW_SRVR_DONE_A;
+                                       s->state = DTLS1_SCTP_ST_SW_WRITE_SOCK;
+                                       }
+#endif
 #else
                                s->state=SSL3_ST_SW_FLUSH;
                                s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
+#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_SW_WRITE_SOCK;
+                                       }
+#endif
 #endif
                                s->init_num=0;
                                }
@@ -461,7 +579,7 @@ int dtls1_accept(SSL *s)
                case SSL3_ST_SW_SRVR_DONE_A:
                case SSL3_ST_SW_SRVR_DONE_B:
                        dtls1_start_timer(s);
-                       ret=dtls1_send_server_done(s);
+                       ret=ssl3_send_server_done(s);
                        if (ret <= 0) goto end;
                        s->s3->tmp.next_state=SSL3_ST_SR_CERT_A;
                        s->state=SSL3_ST_SW_FLUSH;
@@ -472,6 +590,13 @@ int dtls1_accept(SSL *s)
                        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;
                                }
@@ -485,15 +610,16 @@ int dtls1_accept(SSL *s)
                        ret = ssl3_check_client_hello(s);
                        if (ret <= 0)
                                goto end;
-                       dtls1_stop_timer(s);
                        if (ret == 2)
+                               {
+                               dtls1_stop_timer(s);
                                s->state = SSL3_ST_SR_CLNT_HELLO_C;
+                               }
                        else {
                                /* could be sent for a DH cert, even if we
                                 * have not asked for it :-) */
                                ret=ssl3_get_client_certificate(s);
                                if (ret <= 0) goto end;
-                               dtls1_stop_timer(s);
                                s->init_num=0;
                                s->state=SSL3_ST_SR_KEY_EXCH_A;
                        }
@@ -503,7 +629,21 @@ int dtls1_accept(SSL *s)
                case SSL3_ST_SR_KEY_EXCH_B:
                        ret=ssl3_get_client_key_exchange(s);
                        if (ret <= 0) goto end;
-                       dtls1_stop_timer(s);
+#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_SR_CERT_VRFY_A;
                        s->init_num=0;
 
@@ -517,6 +657,24 @@ int dtls1_accept(SSL *s)
                                s->state=SSL3_ST_SR_FINISHED_A;
                                s->init_num = 0;
                                }
+                       else if (SSL_USE_SIGALGS(s))
+                               {
+                               s->state=SSL3_ST_SR_CERT_VRFY_A;
+                               s->init_num=0;
+                               if (!s->session->peer)
+                                       break;
+                               /* For sigalgs freeze the handshake buffer
+                                * at this point and digest cached records.
+                                */
+                               if (!s->s3->handshake_buffer)
+                                       {
+                                       SSLerr(SSL_F_DTLS1_ACCEPT,ERR_R_INTERNAL_ERROR);
+                                       return -1;
+                                       }
+                               s->s3->flags |= TLS1_FLAGS_KEEP_HANDSHAKE;
+                               if (!ssl3_digest_cached_records(s))
+                                       return -1;
+                               }
                        else
                                {
                                s->state=SSL3_ST_SR_CERT_VRFY_A;
@@ -540,9 +698,13 @@ int dtls1_accept(SSL *s)
                        /* we should decide if we expected this one */
                        ret=ssl3_get_cert_verify(s);
                        if (ret <= 0) goto end;
-                       dtls1_stop_timer(s);
-
-                       s->state=SSL3_ST_SR_FINISHED_A;
+#ifndef OPENSSL_NO_SCTP
+                       if (BIO_dgram_is_sctp(SSL_get_wbio(s)) &&
+                           state == SSL_ST_RENEGOTIATE)
+                               s->state=DTLS1_SCTP_ST_SR_READ_SOCK;
+                       else
+#endif                 
+                               s->state=SSL3_ST_SR_FINISHED_A;
                        s->init_num=0;
                        break;
 
@@ -567,7 +729,7 @@ int dtls1_accept(SSL *s)
 #ifndef OPENSSL_NO_TLSEXT
                case SSL3_ST_SW_SESSION_TICKET_A:
                case SSL3_ST_SW_SESSION_TICKET_B:
-                       ret=dtls1_send_newsession_ticket(s);
+                       ret=ssl3_send_newsession_ticket(s);
                        if (ret <= 0) goto end;
                        s->state=SSL3_ST_SW_CHANGE_A;
                        s->init_num=0;
@@ -594,6 +756,14 @@ int dtls1_accept(SSL *s)
                                SSL3_ST_SW_CHANGE_A,SSL3_ST_SW_CHANGE_B);
 
                        if (ret <= 0) goto end;
+
+#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
+
                        s->state=SSL3_ST_SW_FINISHED_A;
                        s->init_num=0;
 
@@ -609,7 +779,7 @@ int dtls1_accept(SSL *s)
 
                case SSL3_ST_SW_FINISHED_A:
                case SSL3_ST_SW_FINISHED_B:
-                       ret=dtls1_send_finished(s,
+                       ret=ssl3_send_finished(s,
                                SSL3_ST_SW_FINISHED_A,SSL3_ST_SW_FINISHED_B,
                                s->method->ssl3_enc->server_finished_label,
                                s->method->ssl3_enc->server_finished_label_len);
@@ -618,7 +788,16 @@ int dtls1_accept(SSL *s)
                        if (s->hit)
                                s->s3->tmp.next_state=SSL3_ST_SR_FINISHED_A;
                        else
+                               {
                                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_SW_WRITE_SOCK;
+                                       }
+#endif
+                               }
                        s->init_num=0;
                        break;
 
@@ -638,9 +817,6 @@ int dtls1_accept(SSL *s)
 
                        if (s->renegotiate == 2) /* skipped if we just sent a HelloRequest */
                                {
-                               /* actually not necessarily a 'new' session unless
-                                * SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION is set */
-                               
                                s->renegotiate=0;
                                s->new_session=0;
                                
@@ -693,33 +869,19 @@ end:
        /* BIO_flush(s->wbio); */
 
        s->in_handshake--;
+#ifndef OPENSSL_NO_SCTP
+               /* Notify SCTP BIO socket to leave 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
+
        if (cb != NULL)
                cb(s,SSL_CB_ACCEPT_EXIT,ret);
        return(ret);
        }
 
-int dtls1_send_hello_request(SSL *s)
-       {
-       unsigned char *p;
-
-       if (s->state == SSL3_ST_SW_HELLO_REQ_A)
-               {
-               p=(unsigned char *)s->init_buf->data;
-               p = dtls1_set_message_header(s, p, SSL3_MT_HELLO_REQUEST, 0, 0, 0);
-
-               s->state=SSL3_ST_SW_HELLO_REQ_B;
-               /* number of bytes to write */
-               s->init_num=DTLS1_HM_HEADER_LENGTH;
-               s->init_off=0;
-
-               /* no need to buffer this message, since there are no retransmit 
-                * requests for it */
-               }
-
-       /* SSL3_ST_SW_HELLO_REQ_B */
-       return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-       }
-
 int dtls1_send_hello_verify_request(SSL *s)
        {
        unsigned int msg_len;
@@ -730,8 +892,9 @@ int dtls1_send_hello_verify_request(SSL *s)
                buf = (unsigned char *)s->init_buf->data;
 
                msg = p = &(buf[DTLS1_HM_HEADER_LENGTH]);
-               *(p++) = s->version >> 8;
-               *(p++) = s->version & 0xFF;
+               /* Always use DTLS 1.0 version: see RFC 6347 */
+               *(p++) = DTLS1_VERSION >> 8;
+               *(p++) = DTLS1_VERSION & 0xFF;
 
                if (s->ctx->app_gen_cookie_cb == NULL ||
                     s->ctx->app_gen_cookie_cb(s, s->d1->cookie,
@@ -758,807 +921,3 @@ int dtls1_send_hello_verify_request(SSL *s)
        /* s->state = DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B */
        return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
        }
-
-int dtls1_send_server_hello(SSL *s)
-       {
-       unsigned char *buf;
-       unsigned char *p,*d;
-       int i;
-       unsigned int sl;
-       unsigned long l,Time;
-
-       if (s->state == SSL3_ST_SW_SRVR_HELLO_A)
-               {
-               buf=(unsigned char *)s->init_buf->data;
-               p=s->s3->server_random;
-               Time=(unsigned long)time(NULL);                 /* Time */
-               l2n(Time,p);
-               RAND_pseudo_bytes(p,SSL3_RANDOM_SIZE-sizeof(Time));
-               /* Do the message type and length last */
-               d=p= &(buf[DTLS1_HM_HEADER_LENGTH]);
-
-               *(p++)=s->version>>8;
-               *(p++)=s->version&0xff;
-
-               /* Random stuff */
-               memcpy(p,s->s3->server_random,SSL3_RANDOM_SIZE);
-               p+=SSL3_RANDOM_SIZE;
-
-               /* now in theory we have 3 options to sending back the
-                * session id.  If it is a re-use, we send back the
-                * old session-id, if it is a new session, we send
-                * back the new session-id or we send back a 0 length
-                * session-id if we want it to be single use.
-                * Currently I will not implement the '0' length session-id
-                * 12-Jan-98 - I'll now support the '0' length stuff.
-                */
-               if (!(s->ctx->session_cache_mode & SSL_SESS_CACHE_SERVER))
-                       s->session->session_id_length=0;
-
-               sl=s->session->session_id_length;
-               if (sl > sizeof s->session->session_id)
-                       {
-                       SSLerr(SSL_F_DTLS1_SEND_SERVER_HELLO, ERR_R_INTERNAL_ERROR);
-                       return -1;
-                       }
-               *(p++)=sl;
-               memcpy(p,s->session->session_id,sl);
-               p+=sl;
-
-               /* put the cipher */
-               if (s->s3->tmp.new_cipher == NULL)
-                       return -1;
-               i=ssl3_put_cipher_by_char(s->s3->tmp.new_cipher,p);
-               p+=i;
-
-               /* put the compression method */
-#ifdef OPENSSL_NO_COMP
-               *(p++)=0;
-#else
-               if (s->s3->tmp.new_compression == NULL)
-                       *(p++)=0;
-               else
-                       *(p++)=s->s3->tmp.new_compression->id;
-#endif
-
-#ifndef OPENSSL_NO_TLSEXT
-               if ((p = ssl_add_serverhello_tlsext(s, p, buf+SSL3_RT_MAX_PLAIN_LENGTH)) == NULL)
-                       {
-                       SSLerr(SSL_F_DTLS1_SEND_SERVER_HELLO,ERR_R_INTERNAL_ERROR);
-                       return -1;
-                       }
-#endif
-
-               /* do the header */
-               l=(p-d);
-               d=buf;
-
-               d = dtls1_set_message_header(s, d, SSL3_MT_SERVER_HELLO, l, 0, l);
-
-               s->state=SSL3_ST_SW_SRVR_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_SW_SRVR_HELLO_B */
-       return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-       }
-
-int dtls1_send_server_done(SSL *s)
-       {
-       unsigned char *p;
-
-       if (s->state == SSL3_ST_SW_SRVR_DONE_A)
-               {
-               p=(unsigned char *)s->init_buf->data;
-
-               /* do the header */
-               p = dtls1_set_message_header(s, p, SSL3_MT_SERVER_DONE, 0, 0, 0);
-
-               s->state=SSL3_ST_SW_SRVR_DONE_B;
-               /* number of bytes to write */
-               s->init_num=DTLS1_HM_HEADER_LENGTH;
-               s->init_off=0;
-
-               /* buffer the message to handle re-xmits */
-               dtls1_buffer_message(s, 0);
-               }
-
-       /* SSL3_ST_SW_SRVR_DONE_B */
-       return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-       }
-
-int dtls1_send_server_key_exchange(SSL *s)
-       {
-#ifndef OPENSSL_NO_RSA
-       unsigned char *q;
-       int j,num;
-       RSA *rsa;
-       unsigned char md_buf[MD5_DIGEST_LENGTH+SHA_DIGEST_LENGTH];
-       unsigned int u;
-#endif
-#ifndef OPENSSL_NO_DH
-       DH *dh=NULL,*dhp;
-#endif
-#ifndef OPENSSL_NO_ECDH
-       EC_KEY *ecdh=NULL, *ecdhp;
-       unsigned char *encodedPoint = NULL;
-       int encodedlen = 0;
-       int curve_id = 0;
-       BN_CTX *bn_ctx = NULL; 
-#endif
-       EVP_PKEY *pkey;
-       unsigned char *p,*d;
-       int al,i;
-       unsigned long type;
-       int n;
-       CERT *cert;
-       BIGNUM *r[4];
-       int nr[4],kn;
-       BUF_MEM *buf;
-       EVP_MD_CTX md_ctx;
-
-       EVP_MD_CTX_init(&md_ctx);
-       if (s->state == SSL3_ST_SW_KEY_EXCH_A)
-               {
-               type=s->s3->tmp.new_cipher->algorithm_mkey;
-               cert=s->cert;
-
-               buf=s->init_buf;
-
-               r[0]=r[1]=r[2]=r[3]=NULL;
-               n=0;
-#ifndef OPENSSL_NO_RSA
-               if (type & SSL_kRSA)
-                       {
-                       rsa=cert->rsa_tmp;
-                       if ((rsa == NULL) && (s->cert->rsa_tmp_cb != NULL))
-                               {
-                               rsa=s->cert->rsa_tmp_cb(s,
-                                     SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
-                                     SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
-                               if(rsa == NULL)
-                               {
-                                       al=SSL_AD_HANDSHAKE_FAILURE;
-                                       SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_ERROR_GENERATING_TMP_RSA_KEY);
-                                       goto f_err;
-                               }
-                               RSA_up_ref(rsa);
-                               cert->rsa_tmp=rsa;
-                               }
-                       if (rsa == NULL)
-                               {
-                               al=SSL_AD_HANDSHAKE_FAILURE;
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_RSA_KEY);
-                               goto f_err;
-                               }
-                       r[0]=rsa->n;
-                       r[1]=rsa->e;
-                       s->s3->tmp.use_rsa_tmp=1;
-                       }
-               else
-#endif
-#ifndef OPENSSL_NO_DH
-                       if (type & SSL_kEDH)
-                       {
-                       dhp=cert->dh_tmp;
-                       if ((dhp == NULL) && (s->cert->dh_tmp_cb != NULL))
-                               dhp=s->cert->dh_tmp_cb(s,
-                                     SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
-                                     SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
-                       if (dhp == NULL)
-                               {
-                               al=SSL_AD_HANDSHAKE_FAILURE;
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_DH_KEY);
-                               goto f_err;
-                               }
-
-                       if (s->s3->tmp.dh != NULL)
-                               {
-                               DH_free(dh);
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
-                               goto err;
-                               }
-
-                       if ((dh=DHparams_dup(dhp)) == NULL)
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB);
-                               goto err;
-                               }
-
-                       s->s3->tmp.dh=dh;
-                       if ((dhp->pub_key == NULL ||
-                            dhp->priv_key == NULL ||
-                            (s->options & SSL_OP_SINGLE_DH_USE)))
-                               {
-                               if(!DH_generate_key(dh))
-                                   {
-                                   SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,
-                                          ERR_R_DH_LIB);
-                                   goto err;
-                                   }
-                               }
-                       else
-                               {
-                               dh->pub_key=BN_dup(dhp->pub_key);
-                               dh->priv_key=BN_dup(dhp->priv_key);
-                               if ((dh->pub_key == NULL) ||
-                                       (dh->priv_key == NULL))
-                                       {
-                                       SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_DH_LIB);
-                                       goto err;
-                                       }
-                               }
-                       r[0]=dh->p;
-                       r[1]=dh->g;
-                       r[2]=dh->pub_key;
-                       }
-               else 
-#endif
-#ifndef OPENSSL_NO_ECDH
-                       if (type & SSL_kEECDH)
-                       {
-                       const EC_GROUP *group;
-
-                       ecdhp=cert->ecdh_tmp;
-                       if ((ecdhp == NULL) && (s->cert->ecdh_tmp_cb != NULL))
-                               {
-                               ecdhp=s->cert->ecdh_tmp_cb(s,
-                                     SSL_C_IS_EXPORT(s->s3->tmp.new_cipher),
-                                     SSL_C_EXPORT_PKEYLENGTH(s->s3->tmp.new_cipher));
-                               }
-                       if (ecdhp == NULL)
-                               {
-                               al=SSL_AD_HANDSHAKE_FAILURE;
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_MISSING_TMP_ECDH_KEY);
-                               goto f_err;
-                               }
-
-                       if (s->s3->tmp.ecdh != NULL)
-                               {
-                               EC_KEY_free(s->s3->tmp.ecdh); 
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR);
-                               goto err;
-                               }
-
-                       /* Duplicate the ECDH structure. */
-                       if (ecdhp == NULL)
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
-                               goto err;
-                               }
-                       if ((ecdh = EC_KEY_dup(ecdhp)) == NULL)
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
-                               goto err;
-                               }
-
-                       s->s3->tmp.ecdh=ecdh;
-                       if ((EC_KEY_get0_public_key(ecdh) == NULL) ||
-                           (EC_KEY_get0_private_key(ecdh) == NULL) ||
-                           (s->options & SSL_OP_SINGLE_ECDH_USE))
-                               {
-                               if(!EC_KEY_generate_key(ecdh))
-                                   {
-                                   SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
-                                   goto err;
-                                   }
-                               }
-
-                       if (((group = EC_KEY_get0_group(ecdh)) == NULL) ||
-                           (EC_KEY_get0_public_key(ecdh)  == NULL) ||
-                           (EC_KEY_get0_private_key(ecdh) == NULL))
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
-                               goto err;
-                               }
-
-                       if (SSL_C_IS_EXPORT(s->s3->tmp.new_cipher) &&
-                           (EC_GROUP_get_degree(group) > 163)) 
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER);
-                               goto err;
-                               }
-
-                       /* XXX: For now, we only support ephemeral ECDH
-                        * keys over named (not generic) curves. For 
-                        * supported named curves, curve_id is non-zero.
-                        */
-                       if ((curve_id = 
-                           tls1_ec_nid2curve_id(EC_GROUP_get_curve_name(group)))
-                           == 0)
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNSUPPORTED_ELLIPTIC_CURVE);
-                               goto err;
-                               }
-
-                       /* Encode the public key.
-                        * First check the size of encoding and
-                        * allocate memory accordingly.
-                        */
-                       encodedlen = EC_POINT_point2oct(group, 
-                           EC_KEY_get0_public_key(ecdh),
-                           POINT_CONVERSION_UNCOMPRESSED, 
-                           NULL, 0, NULL);
-
-                       encodedPoint = (unsigned char *) 
-                           OPENSSL_malloc(encodedlen*sizeof(unsigned char)); 
-                       bn_ctx = BN_CTX_new();
-                       if ((encodedPoint == NULL) || (bn_ctx == NULL))
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_MALLOC_FAILURE);
-                               goto err;
-                               }
-
-
-                       encodedlen = EC_POINT_point2oct(group, 
-                           EC_KEY_get0_public_key(ecdh), 
-                           POINT_CONVERSION_UNCOMPRESSED, 
-                           encodedPoint, encodedlen, bn_ctx);
-
-                       if (encodedlen == 0) 
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_R_ECDH_LIB);
-                               goto err;
-                               }
-
-                       BN_CTX_free(bn_ctx);  bn_ctx=NULL;
-
-                       /* XXX: For now, we only support named (not 
-                        * generic) curves in ECDH ephemeral key exchanges.
-                        * In this situation, we need four additional bytes
-                        * to encode the entire ServerECDHParams
-                        * structure. 
-                        */
-                       n = 4 + encodedlen;
-
-                       /* We'll generate the serverKeyExchange message
-                        * explicitly so we can set these to NULLs
-                        */
-                       r[0]=NULL;
-                       r[1]=NULL;
-                       r[2]=NULL;
-                       r[3]=NULL;
-                       }
-               else 
-#endif /* !OPENSSL_NO_ECDH */
-#ifndef OPENSSL_NO_PSK
-                       if (type & SSL_kPSK)
-                               {
-                               /* reserve size for record length and PSK identity hint*/
-                               n+=2+strlen(s->ctx->psk_identity_hint);
-                               }
-                       else
-#endif /* !OPENSSL_NO_PSK */
-                       {
-                       al=SSL_AD_HANDSHAKE_FAILURE;
-                       SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_KEY_EXCHANGE_TYPE);
-                       goto f_err;
-                       }
-               for (i=0; r[i] != NULL; i++)
-                       {
-                       nr[i]=BN_num_bytes(r[i]);
-                       n+=2+nr[i];
-                       }
-
-               if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
-                       && !(s->s3->tmp.new_cipher->algorithm_mkey & SSL_kPSK))
-                       {
-                       if ((pkey=ssl_get_sign_pkey(s,s->s3->tmp.new_cipher, NULL))
-                               == NULL)
-                               {
-                               al=SSL_AD_DECODE_ERROR;
-                               goto f_err;
-                               }
-                       kn=EVP_PKEY_size(pkey);
-                       }
-               else
-                       {
-                       pkey=NULL;
-                       kn=0;
-                       }
-
-               if (!BUF_MEM_grow_clean(buf,n+DTLS1_HM_HEADER_LENGTH+kn))
-                       {
-                       SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_BUF);
-                       goto err;
-                       }
-               d=(unsigned char *)s->init_buf->data;
-               p= &(d[DTLS1_HM_HEADER_LENGTH]);
-
-               for (i=0; r[i] != NULL; i++)
-                       {
-                       s2n(nr[i],p);
-                       BN_bn2bin(r[i],p);
-                       p+=nr[i];
-                       }
-
-#ifndef OPENSSL_NO_ECDH
-               if (type & SSL_kEECDH) 
-                       {
-                       /* XXX: For now, we only support named (not generic) curves.
-                        * In this situation, the serverKeyExchange message has:
-                        * [1 byte CurveType], [2 byte CurveName]
-                        * [1 byte length of encoded point], followed by
-                        * the actual encoded point itself
-                        */
-                       *p = NAMED_CURVE_TYPE;
-                       p += 1;
-                       *p = 0;
-                       p += 1;
-                       *p = curve_id;
-                       p += 1;
-                       *p = encodedlen;
-                       p += 1;
-                       memcpy((unsigned char*)p, 
-                           (unsigned char *)encodedPoint, 
-                           encodedlen);
-                       OPENSSL_free(encodedPoint);
-                       p += encodedlen;
-                       }
-#endif
-
-#ifndef OPENSSL_NO_PSK
-               if (type & SSL_kPSK)
-                       {
-                       /* copy PSK identity hint */
-                       s2n(strlen(s->ctx->psk_identity_hint), p); 
-                       strncpy((char *)p, s->ctx->psk_identity_hint, strlen(s->ctx->psk_identity_hint));
-                       p+=strlen(s->ctx->psk_identity_hint);
-                       }
-#endif
-
-               /* not anonymous */
-               if (pkey != NULL)
-                       {
-                       /* n is the length of the params, they start at
-                        * &(d[DTLS1_HM_HEADER_LENGTH]) and p points to the space
-                        * at the end. */
-#ifndef OPENSSL_NO_RSA
-                       if (pkey->type == EVP_PKEY_RSA)
-                               {
-                               q=md_buf;
-                               j=0;
-                               for (num=2; num > 0; num--)
-                                       {
-                                       EVP_DigestInit_ex(&md_ctx,(num == 2)
-                                               ?s->ctx->md5:s->ctx->sha1, NULL);
-                                       EVP_DigestUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
-                                       EVP_DigestUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
-                                       EVP_DigestUpdate(&md_ctx,&(d[DTLS1_HM_HEADER_LENGTH]),n);
-                                       EVP_DigestFinal_ex(&md_ctx,q,
-                                               (unsigned int *)&i);
-                                       q+=i;
-                                       j+=i;
-                                       }
-                               if (RSA_sign(NID_md5_sha1, md_buf, j,
-                                       &(p[2]), &u, pkey->pkey.rsa) <= 0)
-                                       {
-                                       SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_RSA);
-                                       goto err;
-                                       }
-                               s2n(u,p);
-                               n+=u+2;
-                               }
-                       else
-#endif
-#if !defined(OPENSSL_NO_DSA)
-                               if (pkey->type == EVP_PKEY_DSA)
-                               {
-                               /* lets do DSS */
-                               EVP_SignInit_ex(&md_ctx,EVP_dss1(), NULL);
-                               EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
-                               EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
-                               EVP_SignUpdate(&md_ctx,&(d[DTLS1_HM_HEADER_LENGTH]),n);
-                               if (!EVP_SignFinal(&md_ctx,&(p[2]),
-                                       (unsigned int *)&i,pkey))
-                                       {
-                                       SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_DSA);
-                                       goto err;
-                                       }
-                               s2n(i,p);
-                               n+=i+2;
-                               }
-                       else
-#endif
-#if !defined(OPENSSL_NO_ECDSA)
-                               if (pkey->type == EVP_PKEY_EC)
-                               {
-                               /* let's do ECDSA */
-                               EVP_SignInit_ex(&md_ctx,EVP_ecdsa(), NULL);
-                               EVP_SignUpdate(&md_ctx,&(s->s3->client_random[0]),SSL3_RANDOM_SIZE);
-                               EVP_SignUpdate(&md_ctx,&(s->s3->server_random[0]),SSL3_RANDOM_SIZE);
-                               EVP_SignUpdate(&md_ctx,&(d[4]),n);
-                               if (!EVP_SignFinal(&md_ctx,&(p[2]),
-                                       (unsigned int *)&i,pkey))
-                                       {
-                                       SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,ERR_LIB_ECDSA);
-                                       goto err;
-                                       }
-                               s2n(i,p);
-                               n+=i+2;
-                               }
-                       else
-#endif
-                               {
-                               /* Is this error check actually needed? */
-                               al=SSL_AD_HANDSHAKE_FAILURE;
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_KEY_EXCHANGE,SSL_R_UNKNOWN_PKEY_TYPE);
-                               goto f_err;
-                               }
-                       }
-
-               d = dtls1_set_message_header(s, d,
-                       SSL3_MT_SERVER_KEY_EXCHANGE, n, 0, n);
-
-               /* we should now have things packed up, so lets send
-                * it off */
-               s->init_num=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_SW_KEY_EXCH_B;
-       EVP_MD_CTX_cleanup(&md_ctx);
-       return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-f_err:
-       ssl3_send_alert(s,SSL3_AL_FATAL,al);
-err:
-#ifndef OPENSSL_NO_ECDH
-       if (encodedPoint != NULL) OPENSSL_free(encodedPoint);
-       BN_CTX_free(bn_ctx);
-#endif
-       EVP_MD_CTX_cleanup(&md_ctx);
-       return(-1);
-       }
-
-int dtls1_send_certificate_request(SSL *s)
-       {
-       unsigned char *p,*d;
-       int i,j,nl,off,n;
-       STACK_OF(X509_NAME) *sk=NULL;
-       X509_NAME *name;
-       BUF_MEM *buf;
-       unsigned int msg_len;
-
-       if (s->state == SSL3_ST_SW_CERT_REQ_A)
-               {
-               buf=s->init_buf;
-
-               d=p=(unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH]);
-
-               /* get the list of acceptable cert types */
-               p++;
-               n=ssl3_get_req_cert_type(s,p);
-               d[0]=n;
-               p+=n;
-               n++;
-
-               off=n;
-               p+=2;
-               n+=2;
-
-               sk=SSL_get_client_CA_list(s);
-               nl=0;
-               if (sk != NULL)
-                       {
-                       for (i=0; i<sk_X509_NAME_num(sk); i++)
-                               {
-                               name=sk_X509_NAME_value(sk,i);
-                               j=i2d_X509_NAME(name,NULL);
-                               if (!BUF_MEM_grow_clean(buf,DTLS1_HM_HEADER_LENGTH+n+j+2))
-                                       {
-                                       SSLerr(SSL_F_DTLS1_SEND_CERTIFICATE_REQUEST,ERR_R_BUF_LIB);
-                                       goto err;
-                                       }
-                               p=(unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH+n]);
-                               if (!(s->options & SSL_OP_NETSCAPE_CA_DN_BUG))
-                                       {
-                                       s2n(j,p);
-                                       i2d_X509_NAME(name,&p);
-                                       n+=2+j;
-                                       nl+=2+j;
-                                       }
-                               else
-                                       {
-                                       d=p;
-                                       i2d_X509_NAME(name,&p);
-                                       j-=2; s2n(j,d); j+=2;
-                                       n+=j;
-                                       nl+=j;
-                                       }
-                               }
-                       }
-               /* else no CA names */
-               p=(unsigned char *)&(buf->data[DTLS1_HM_HEADER_LENGTH+off]);
-               s2n(nl,p);
-
-               d=(unsigned char *)buf->data;
-               *(d++)=SSL3_MT_CERTIFICATE_REQUEST;
-               l2n3(n,d);
-               s2n(s->d1->handshake_write_seq,d);
-               s->d1->handshake_write_seq++;
-
-               /* we should now have things packed up, so lets send
-                * it off */
-
-               s->init_num=n+DTLS1_HM_HEADER_LENGTH;
-               s->init_off=0;
-#ifdef NETSCAPE_HANG_BUG
-/* XXX: what to do about this? */
-               p=(unsigned char *)s->init_buf->data + s->init_num;
-
-               /* do the header */
-               *(p++)=SSL3_MT_SERVER_DONE;
-               *(p++)=0;
-               *(p++)=0;
-               *(p++)=0;
-               s->init_num += 4;
-#endif
-
-               /* XDTLS:  set message header ? */
-               msg_len = s->init_num - DTLS1_HM_HEADER_LENGTH;
-               dtls1_set_message_header(s, (void *)s->init_buf->data,
-                       SSL3_MT_CERTIFICATE_REQUEST, msg_len, 0, msg_len);
-
-               /* buffer the message to handle re-xmits */
-               dtls1_buffer_message(s, 0);
-
-               s->state = SSL3_ST_SW_CERT_REQ_B;
-               }
-
-       /* SSL3_ST_SW_CERT_REQ_B */
-       return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-err:
-       return(-1);
-       }
-
-int dtls1_send_server_certificate(SSL *s)
-       {
-       unsigned long l;
-       X509 *x;
-
-       if (s->state == SSL3_ST_SW_CERT_A)
-               {
-               x=ssl_get_server_send_cert(s);
-               if (x == NULL)
-                       {
-                       /* VRS: allow null cert if auth == KRB5 */
-                       if ((s->s3->tmp.new_cipher->algorithm_mkey != SSL_kKRB5) ||
-                           (s->s3->tmp.new_cipher->algorithm_auth != SSL_aKRB5))
-                               {
-                               SSLerr(SSL_F_DTLS1_SEND_SERVER_CERTIFICATE,ERR_R_INTERNAL_ERROR);
-                               return(0);
-                               }
-                       }
-
-               l=dtls1_output_cert_chain(s,x);
-               s->state=SSL3_ST_SW_CERT_B;
-               s->init_num=(int)l;
-               s->init_off=0;
-
-               /* buffer the message to handle re-xmits */
-               dtls1_buffer_message(s, 0);
-               }
-
-       /* SSL3_ST_SW_CERT_B */
-       return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-       }
-
-#ifndef OPENSSL_NO_TLSEXT
-int dtls1_send_newsession_ticket(SSL *s)
-       {
-       if (s->state == SSL3_ST_SW_SESSION_TICKET_A)
-               {
-               unsigned char *p, *senc, *macstart;
-               int len, slen;
-               unsigned int hlen, msg_len;
-               EVP_CIPHER_CTX ctx;
-               HMAC_CTX hctx;
-               SSL_CTX *tctx = s->initial_ctx;
-               unsigned char iv[EVP_MAX_IV_LENGTH];
-               unsigned char key_name[16];
-
-               /* get session encoding length */
-               slen = i2d_SSL_SESSION(s->session, NULL);
-               /* Some length values are 16 bits, so forget it if session is
-                * too long
-                */
-               if (slen > 0xFF00)
-                       return -1;
-               /* Grow buffer if need be: the length calculation is as
-                * follows 12 (DTLS handshake message header) +
-                * 4 (ticket lifetime hint) + 2 (ticket length) +
-                * 16 (key name) + max_iv_len (iv length) +
-                * session_length + max_enc_block_size (max encrypted session
-                * length) + max_md_size (HMAC).
-                */
-               if (!BUF_MEM_grow(s->init_buf,
-                       DTLS1_HM_HEADER_LENGTH + 22 + EVP_MAX_IV_LENGTH +
-                       EVP_MAX_BLOCK_LENGTH + EVP_MAX_MD_SIZE + slen))
-                       return -1;
-               senc = OPENSSL_malloc(slen);
-               if (!senc)
-                       return -1;
-               p = senc;
-               i2d_SSL_SESSION(s->session, &p);
-
-               p=(unsigned char *)&(s->init_buf->data[DTLS1_HM_HEADER_LENGTH]);
-               EVP_CIPHER_CTX_init(&ctx);
-               HMAC_CTX_init(&hctx);
-               /* Initialize HMAC and cipher contexts. If callback present
-                * it does all the work otherwise use generated values
-                * from parent ctx.
-                */
-               if (tctx->tlsext_ticket_key_cb)
-                       {
-                       if (tctx->tlsext_ticket_key_cb(s, key_name, iv, &ctx,
-                                                        &hctx, 1) < 0)
-                               {
-                               OPENSSL_free(senc);
-                               return -1;
-                               }
-                       }
-               else
-                       {
-                       RAND_pseudo_bytes(iv, 16);
-                       EVP_EncryptInit_ex(&ctx, EVP_aes_128_cbc(), NULL,
-                                       tctx->tlsext_tick_aes_key, iv);
-                       HMAC_Init_ex(&hctx, tctx->tlsext_tick_hmac_key, 16,
-                                       tlsext_tick_md(), NULL);
-                       memcpy(key_name, tctx->tlsext_tick_key_name, 16);
-                       }
-               l2n(s->session->tlsext_tick_lifetime_hint, p);
-               /* Skip ticket length for now */
-               p += 2;
-               /* Output key name */
-               macstart = p;
-               memcpy(p, key_name, 16);
-               p += 16;
-               /* output IV */
-               memcpy(p, iv, EVP_CIPHER_CTX_iv_length(&ctx));
-               p += EVP_CIPHER_CTX_iv_length(&ctx);
-               /* Encrypt session data */
-               EVP_EncryptUpdate(&ctx, p, &len, senc, slen);
-               p += len;
-               EVP_EncryptFinal(&ctx, p, &len);
-               p += len;
-               EVP_CIPHER_CTX_cleanup(&ctx);
-
-               HMAC_Update(&hctx, macstart, p - macstart);
-               HMAC_Final(&hctx, p, &hlen);
-               HMAC_CTX_cleanup(&hctx);
-
-               p += hlen;
-               /* Now write out lengths: p points to end of data written */
-               /* Total length */
-               len = p - (unsigned char *)(s->init_buf->data);
-               /* Ticket length */
-               p=(unsigned char *)&(s->init_buf->data[DTLS1_HM_HEADER_LENGTH]) + 4;
-               s2n(len - DTLS1_HM_HEADER_LENGTH - 6, p);
-
-               /* number of bytes to write */
-               s->init_num= len;
-               s->state=SSL3_ST_SW_SESSION_TICKET_B;
-               s->init_off=0;
-               OPENSSL_free(senc);
-
-               /* XDTLS:  set message header ? */
-               msg_len = s->init_num - DTLS1_HM_HEADER_LENGTH;
-               dtls1_set_message_header(s, (void *)s->init_buf->data,
-                       SSL3_MT_NEWSESSION_TICKET, msg_len, 0, msg_len);
-
-               /* buffer the message to handle re-xmits */
-               dtls1_buffer_message(s, 0);
-               }
-
-       /* SSL3_ST_SW_SESSION_TICKET_B */
-       return(dtls1_do_write(s,SSL3_RT_HANDSHAKE));
-       }
-#endif