Merge pull request #4329 from mrezai/openssl-1.0.2g

Update OpenSSL to version 1.0.2g

1 files changed, 66 insertions, 845 deletions

diff --git a/drivers/builtin_openssl2/ssl/d1_srvr.c b/drivers/builtin_openssl2/ssl/d1_srvr.c
index f01b8a693f..e677d880f0 100644
--- a/drivers/builtin_openssl2/ssl/d1_srvr.c
+++ b/drivers/builtin_openssl2/ssl/d1_srvr.c
@@ -131,15 +131,33 @@ static int dtls1_send_hello_verify_request(SSL *s);
 
 static const SSL_METHOD *dtls1_get_server_method(int ver)
 {
-    if (ver == DTLS1_VERSION)
-        return (DTLSv1_server_method());
+    if (ver == DTLS_ANY_VERSION)
+        return DTLS_server_method();
+    else if (ver == DTLS1_VERSION)
+        return DTLSv1_server_method();
+    else if (ver == DTLS1_2_VERSION)
+        return DTLSv1_2_server_method();
     else
-        return (NULL);
+        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)
+                          ssl_undefined_function,
+                          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)
 {
@@ -297,7 +315,7 @@ int dtls1_accept(SSL *s)
             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_SR_CLNT_HELLO_A;
@@ -405,7 +423,7 @@ int dtls1_accept(SSL *s)
         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;
 
@@ -448,7 +466,7 @@ int dtls1_accept(SSL *s)
             if (!(s->s3->tmp.new_cipher->algorithm_auth & SSL_aNULL)
                 && !(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
@@ -491,7 +509,7 @@ int dtls1_accept(SSL *s)
 #ifndef OPENSSL_NO_PSK
                 || ((alg_k & SSL_kPSK) && s->ctx->psk_identity_hint)
 #endif
-                || (alg_k & SSL_kEDH)
+                || (alg_k & SSL_kDHE)
                 || (alg_k & SSL_kEECDH)
                 || ((alg_k & SSL_kRSA)
                     && (s->cert->pkeys[SSL_PKEY_RSA_ENC].privatekey == NULL
@@ -504,7 +522,7 @@ 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
@@ -558,7 +576,7 @@ int dtls1_accept(SSL *s)
             } 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
@@ -586,7 +604,7 @@ 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;
@@ -614,22 +632,13 @@ int dtls1_accept(SSL *s)
 
         case SSL3_ST_SR_CERT_A:
         case SSL3_ST_SR_CERT_B:
-            /* Check for second client hello (MS SGC) */
-            ret = ssl3_check_client_hello(s);
-            if (ret <= 0)
-                goto end;
-            if (ret == 2) {
-                dtls1_stop_timer(s);
-                s->state = SSL3_ST_SR_CLNT_HELLO_C;
-            } else {
-                if (s->s3->tmp.cert_request) {
-                    ret = ssl3_get_client_certificate(s);
-                    if (ret <= 0)
-                        goto end;
-                }
-                s->init_num = 0;
-                s->state = SSL3_ST_SR_KEY_EXCH_A;
+            if (s->s3->tmp.cert_request) {
+                ret = ssl3_get_client_certificate(s);
+                if (ret <= 0)
+                    goto end;
             }
+            s->init_num = 0;
+            s->state = SSL3_ST_SR_KEY_EXCH_A;
             break;
 
         case SSL3_ST_SR_KEY_EXCH_A:
@@ -668,6 +677,25 @@ 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);
+                    s->state = SSL_ST_ERR;
+                    return -1;
+                }
+                s->s3->flags |= TLS1_FLAGS_KEEP_HANDSHAKE;
+                if (!ssl3_digest_cached_records(s)) {
+                    s->state = SSL_ST_ERR;
+                    return -1;
+                }
             } else {
                 s->state = SSL3_ST_SR_CERT_VRFY_A;
                 s->init_num = 0;
@@ -735,7 +763,7 @@ 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;
@@ -797,13 +825,13 @@ int dtls1_accept(SSL *s)
 
         case SSL3_ST_SW_FINISHED_A:
         case SSL3_ST_SW_FINISHED_B:
-            ret = dtls1_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);
+            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);
             if (ret <= 0)
                 goto end;
             s->state = SSL3_ST_SW_FLUSH;
@@ -910,29 +938,6 @@ int dtls1_accept(SSL *s)
     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;
@@ -942,8 +947,9 @@ 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,
@@ -972,788 +978,3 @@ 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;
-
-    if (s->state == SSL3_ST_SW_SRVR_HELLO_A) {
-        buf = (unsigned char *)s->init_buf->data;
-        p = s->s3->server_random;
-        ssl_fill_hello_random(s, 1, p, SSL3_RANDOM_SIZE);
-        /* 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 (ssl_prepare_serverhello_tlsext(s) <= 0) {
-            SSLerr(SSL_F_DTLS1_SEND_SERVER_HELLO, SSL_R_SERVERHELLO_TLSEXT);
-            return -1;
-        }
-        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);
-            encodedPoint = NULL;
-            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[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_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);
-        if (!l) {
-            SSLerr(SSL_F_DTLS1_SEND_SERVER_CERTIFICATE, ERR_R_INTERNAL_ERROR);
-            return (0);
-        }
-        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