diff --git a/library/ssl_srv.c b/library/ssl_srv.c
index 8efccce..994661a 100644
--- a/library/ssl_srv.c
+++ b/library/ssl_srv.c
@@ -42,28 +42,30 @@
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
-int mbedtls_ssl_set_client_transport_id( mbedtls_ssl_context *ssl,
-                                 const unsigned char *info,
-                                 size_t ilen )
+int mbedtls_ssl_set_client_transport_id(mbedtls_ssl_context *ssl,
+                                        const unsigned char *info,
+                                        size_t ilen)
 {
-    if( ssl->conf->endpoint != MBEDTLS_SSL_IS_SERVER )
-        return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+    if (ssl->conf->endpoint != MBEDTLS_SSL_IS_SERVER) {
+        return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+    }
 
-    mbedtls_free( ssl->cli_id );
+    mbedtls_free(ssl->cli_id);
 
-    if( ( ssl->cli_id = mbedtls_calloc( 1, ilen ) ) == NULL )
-        return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
+    if ((ssl->cli_id = mbedtls_calloc(1, ilen)) == NULL) {
+        return MBEDTLS_ERR_SSL_ALLOC_FAILED;
+    }
 
-    memcpy( ssl->cli_id, info, ilen );
+    memcpy(ssl->cli_id, info, ilen);
     ssl->cli_id_len = ilen;
 
-    return( 0 );
+    return 0;
 }
 
-void mbedtls_ssl_conf_dtls_cookies( mbedtls_ssl_config *conf,
-                           mbedtls_ssl_cookie_write_t *f_cookie_write,
-                           mbedtls_ssl_cookie_check_t *f_cookie_check,
-                           void *p_cookie )
+void mbedtls_ssl_conf_dtls_cookies(mbedtls_ssl_config *conf,
+                                   mbedtls_ssl_cookie_write_t *f_cookie_write,
+                                   mbedtls_ssl_cookie_check_t *f_cookie_check,
+                                   void *p_cookie)
 {
     conf->f_cookie_write = f_cookie_write;
     conf->f_cookie_check = f_cookie_check;
@@ -73,153 +75,147 @@
 
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_servername_ext( mbedtls_ssl_context *ssl,
-                                     const unsigned char *buf,
-                                     size_t len )
+static int ssl_parse_servername_ext(mbedtls_ssl_context *ssl,
+                                    const unsigned char *buf,
+                                    size_t len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t servername_list_size, hostname_len;
     const unsigned char *p;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "parse ServerName extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("parse ServerName extension"));
 
-    if( len < 2 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len < 2) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
-    servername_list_size = ( ( buf[0] << 8 ) | ( buf[1] ) );
-    if( servername_list_size + 2 != len )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    servername_list_size = ((buf[0] << 8) | (buf[1]));
+    if (servername_list_size + 2 != len) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     p = buf + 2;
-    while( servername_list_size > 2 )
-    {
-        hostname_len = ( ( p[1] << 8 ) | p[2] );
-        if( hostname_len + 3 > servername_list_size )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-            mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                            MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    while (servername_list_size > 2) {
+        hostname_len = ((p[1] << 8) | p[2]);
+        if (hostname_len + 3 > servername_list_size) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
 
-        if( p[0] == MBEDTLS_TLS_EXT_SERVERNAME_HOSTNAME )
-        {
-            ret = ssl->conf->f_sni( ssl->conf->p_sni,
-                                    ssl, p + 3, hostname_len );
-            if( ret != 0 )
-            {
-                MBEDTLS_SSL_DEBUG_RET( 1, "ssl_sni_wrapper", ret );
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                        MBEDTLS_SSL_ALERT_MSG_UNRECOGNIZED_NAME );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        if (p[0] == MBEDTLS_TLS_EXT_SERVERNAME_HOSTNAME) {
+            ret = ssl->conf->f_sni(ssl->conf->p_sni,
+                                   ssl, p + 3, hostname_len);
+            if (ret != 0) {
+                MBEDTLS_SSL_DEBUG_RET(1, "ssl_sni_wrapper", ret);
+                mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                               MBEDTLS_SSL_ALERT_MSG_UNRECOGNIZED_NAME);
+                return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
             }
-            return( 0 );
+            return 0;
         }
 
         servername_list_size -= hostname_len + 3;
         p += hostname_len + 3;
     }
 
-    if( servername_list_size != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (servername_list_size != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_conf_has_psk_or_cb( mbedtls_ssl_config const *conf )
+static int ssl_conf_has_psk_or_cb(mbedtls_ssl_config const *conf)
 {
-    if( conf->f_psk != NULL )
-        return( 1 );
+    if (conf->f_psk != NULL) {
+        return 1;
+    }
 
-    if( conf->psk_identity_len == 0 || conf->psk_identity == NULL )
-        return( 0 );
+    if (conf->psk_identity_len == 0 || conf->psk_identity == NULL) {
+        return 0;
+    }
 
-    if( conf->psk != NULL && conf->psk_len != 0 )
-        return( 1 );
+    if (conf->psk != NULL && conf->psk_len != 0) {
+        return 1;
+    }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
-    if( ! mbedtls_svc_key_id_is_null( conf->psk_opaque ) )
-        return( 1 );
+    if (!mbedtls_svc_key_id_is_null(conf->psk_opaque)) {
+        return 1;
+    }
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_use_opaque_psk( mbedtls_ssl_context const *ssl )
+static int ssl_use_opaque_psk(mbedtls_ssl_context const *ssl)
 {
-    if( ssl->conf->f_psk != NULL )
-    {
+    if (ssl->conf->f_psk != NULL) {
         /* If we've used a callback to select the PSK,
          * the static configuration is irrelevant. */
 
-        if( ! mbedtls_svc_key_id_is_null( ssl->handshake->psk_opaque ) )
-            return( 1 );
+        if (!mbedtls_svc_key_id_is_null(ssl->handshake->psk_opaque)) {
+            return 1;
+        }
 
-        return( 0 );
+        return 0;
     }
 
-    if( ! mbedtls_svc_key_id_is_null( ssl->conf->psk_opaque ) )
-        return( 1 );
+    if (!mbedtls_svc_key_id_is_null(ssl->conf->psk_opaque)) {
+        return 1;
+    }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_renegotiation_info( mbedtls_ssl_context *ssl,
-                                         const unsigned char *buf,
-                                         size_t len )
+static int ssl_parse_renegotiation_info(mbedtls_ssl_context *ssl,
+                                        const unsigned char *buf,
+                                        size_t len)
 {
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE )
-    {
+    if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
         /* Check verify-data in constant-time. The length OTOH is no secret */
-        if( len    != 1 + ssl->verify_data_len ||
+        if (len    != 1 + ssl->verify_data_len ||
             buf[0] !=     ssl->verify_data_len ||
-            mbedtls_ct_memcmp( buf + 1, ssl->peer_verify_data,
-                          ssl->verify_data_len ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "non-matching renegotiation info" ) );
-            mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                            MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+            mbedtls_ct_memcmp(buf + 1, ssl->peer_verify_data,
+                              ssl->verify_data_len) != 0) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("non-matching renegotiation info"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
     {
-        if( len != 1 || buf[0] != 0x0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "non-zero length renegotiation info" ) );
-            mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                            MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        if (len != 1 || buf[0] != 0x0) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("non-zero length renegotiation info"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
 
         ssl->secure_renegotiation = MBEDTLS_SSL_SECURE_RENEGOTIATION;
     }
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \
@@ -238,9 +234,9 @@
  *
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_signature_algorithms_ext( mbedtls_ssl_context *ssl,
-                                               const unsigned char *buf,
-                                               size_t len )
+static int ssl_parse_signature_algorithms_ext(mbedtls_ssl_context *ssl,
+                                              const unsigned char *buf,
+                                              size_t len)
 {
     size_t sig_alg_list_size;
 
@@ -250,20 +246,19 @@
     mbedtls_md_type_t md_cur;
     mbedtls_pk_type_t sig_cur;
 
-    if ( len < 2 ) {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len < 2) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
-    sig_alg_list_size = ( ( buf[0] << 8 ) | ( buf[1] ) );
-    if( sig_alg_list_size + 2 != len ||
-        sig_alg_list_size % 2 != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    sig_alg_list_size = ((buf[0] << 8) | (buf[1]));
+    if (sig_alg_list_size + 2 != len ||
+        sig_alg_list_size % 2 != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /* Currently we only guarantee signing the ServerKeyExchange message according
@@ -275,41 +270,35 @@
      * pair list from the extension.
      */
 
-    for( p = buf + 2; p < end; p += 2 )
-    {
+    for (p = buf + 2; p < end; p += 2) {
         /* Silently ignore unknown signature or hash algorithms. */
 
-        if( ( sig_cur = mbedtls_ssl_pk_alg_from_sig( p[1] ) ) == MBEDTLS_PK_NONE )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, signature_algorithm ext"
-                                        " unknown sig alg encoding %d", p[1] ) );
+        if ((sig_cur = mbedtls_ssl_pk_alg_from_sig(p[1])) == MBEDTLS_PK_NONE) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, signature_algorithm ext"
+                                      " unknown sig alg encoding %d", p[1]));
             continue;
         }
 
         /* Check if we support the hash the user proposes */
-        md_cur = mbedtls_ssl_md_alg_from_hash( p[0] );
-        if( md_cur == MBEDTLS_MD_NONE )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, signature_algorithm ext:"
-                                        " unknown hash alg encoding %d", p[0] ) );
+        md_cur = mbedtls_ssl_md_alg_from_hash(p[0]);
+        if (md_cur == MBEDTLS_MD_NONE) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, signature_algorithm ext:"
+                                      " unknown hash alg encoding %d", p[0]));
             continue;
         }
 
-        if( mbedtls_ssl_check_sig_hash( ssl, md_cur ) == 0 )
-        {
-            mbedtls_ssl_sig_hash_set_add( &ssl->handshake->hash_algs, sig_cur, md_cur );
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, signature_algorithm ext:"
-                                        " match sig %u and hash %u",
-                                        (unsigned) sig_cur, (unsigned) md_cur ) );
-        }
-        else
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, signature_algorithm ext: "
-                                        "hash alg %u not supported", (unsigned) md_cur ) );
+        if (mbedtls_ssl_check_sig_hash(ssl, md_cur) == 0) {
+            mbedtls_ssl_sig_hash_set_add(&ssl->handshake->hash_algs, sig_cur, md_cur);
+            MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, signature_algorithm ext:"
+                                      " match sig %u and hash %u",
+                                      (unsigned) sig_cur, (unsigned) md_cur));
+        } else {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, signature_algorithm ext: "
+                                      "hash alg %u not supported", (unsigned) md_cur));
         }
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 &&
           MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
@@ -317,61 +306,57 @@
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_supported_elliptic_curves( mbedtls_ssl_context *ssl,
-                                                const unsigned char *buf,
-                                                size_t len )
+static int ssl_parse_supported_elliptic_curves(mbedtls_ssl_context *ssl,
+                                               const unsigned char *buf,
+                                               size_t len)
 {
     size_t list_size, our_size;
     const unsigned char *p;
     const mbedtls_ecp_curve_info *curve_info, **curves;
 
-    if ( len < 2 ) {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len < 2) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
-    list_size = ( ( buf[0] << 8 ) | ( buf[1] ) );
-    if( list_size + 2 != len ||
-        list_size % 2 != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    list_size = ((buf[0] << 8) | (buf[1]));
+    if (list_size + 2 != len ||
+        list_size % 2 != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /* Should never happen unless client duplicates the extension */
-    if( ssl->handshake->curves != NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (ssl->handshake->curves != NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /* Don't allow our peer to make us allocate too much memory,
      * and leave room for a final 0 */
     our_size = list_size / 2 + 1;
-    if( our_size > MBEDTLS_ECP_DP_MAX )
+    if (our_size > MBEDTLS_ECP_DP_MAX) {
         our_size = MBEDTLS_ECP_DP_MAX;
+    }
 
-    if( ( curves = mbedtls_calloc( our_size, sizeof( *curves ) ) ) == NULL )
-    {
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR );
-        return( MBEDTLS_ERR_SSL_ALLOC_FAILED );
+    if ((curves = mbedtls_calloc(our_size, sizeof(*curves))) == NULL) {
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_INTERNAL_ERROR);
+        return MBEDTLS_ERR_SSL_ALLOC_FAILED;
     }
 
     ssl->handshake->curves = curves;
 
     p = buf + 2;
-    while( list_size > 0 && our_size > 1 )
-    {
-        curve_info = mbedtls_ecp_curve_info_from_tls_id( ( p[0] << 8 ) | p[1] );
+    while (list_size > 0 && our_size > 1) {
+        curve_info = mbedtls_ecp_curve_info_from_tls_id((p[0] << 8) | p[1]);
 
-        if( curve_info != NULL )
-        {
+        if (curve_info != NULL) {
             *curves++ = curve_info;
             our_size--;
         }
@@ -380,116 +365,109 @@
         p += 2;
     }
 
-    return( 0 );
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_supported_point_formats( mbedtls_ssl_context *ssl,
-                                              const unsigned char *buf,
-                                              size_t len )
+static int ssl_parse_supported_point_formats(mbedtls_ssl_context *ssl,
+                                             const unsigned char *buf,
+                                             size_t len)
 {
     size_t list_size;
     const unsigned char *p;
 
-    if( len == 0 || (size_t)( buf[0] + 1 ) != len )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len == 0 || (size_t) (buf[0] + 1) != len) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
     list_size = buf[0];
 
     p = buf + 1;
-    while( list_size > 0 )
-    {
-        if( p[0] == MBEDTLS_ECP_PF_UNCOMPRESSED ||
-            p[0] == MBEDTLS_ECP_PF_COMPRESSED )
-        {
+    while (list_size > 0) {
+        if (p[0] == MBEDTLS_ECP_PF_UNCOMPRESSED ||
+            p[0] == MBEDTLS_ECP_PF_COMPRESSED) {
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C)
             ssl->handshake->ecdh_ctx.point_format = p[0];
 #endif
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
             ssl->handshake->ecjpake_ctx.point_format = p[0];
 #endif
-            MBEDTLS_SSL_DEBUG_MSG( 4, ( "point format selected: %d", p[0] ) );
-            return( 0 );
+            MBEDTLS_SSL_DEBUG_MSG(4, ("point format selected: %d", p[0]));
+            return 0;
         }
 
         list_size--;
         p++;
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
           MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_ecjpake_kkpp( mbedtls_ssl_context *ssl,
-                                   const unsigned char *buf,
-                                   size_t len )
+static int ssl_parse_ecjpake_kkpp(mbedtls_ssl_context *ssl,
+                                  const unsigned char *buf,
+                                  size_t len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    if( mbedtls_ecjpake_check( &ssl->handshake->ecjpake_ctx ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "skip ecjpake kkpp extension" ) );
-        return( 0 );
+    if (mbedtls_ecjpake_check(&ssl->handshake->ecjpake_ctx) != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("skip ecjpake kkpp extension"));
+        return 0;
     }
 
-    if( ( ret = mbedtls_ecjpake_read_round_one( &ssl->handshake->ecjpake_ctx,
-                                                buf, len ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecjpake_read_round_one", ret );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-        return( ret );
+    if ((ret = mbedtls_ecjpake_read_round_one(&ssl->handshake->ecjpake_ctx,
+                                              buf, len)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecjpake_read_round_one", ret);
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+        return ret;
     }
 
     /* Only mark the extension as OK when we're sure it is */
     ssl->handshake->cli_exts |= MBEDTLS_TLS_EXT_ECJPAKE_KKPP_OK;
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_max_fragment_length_ext( mbedtls_ssl_context *ssl,
-                                              const unsigned char *buf,
-                                              size_t len )
+static int ssl_parse_max_fragment_length_ext(mbedtls_ssl_context *ssl,
+                                             const unsigned char *buf,
+                                             size_t len)
 {
-    if( len != 1 || buf[0] >= MBEDTLS_SSL_MAX_FRAG_LEN_INVALID )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len != 1 || buf[0] >= MBEDTLS_SSL_MAX_FRAG_LEN_INVALID) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     ssl->session_negotiate->mfl_code = buf[0];
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_cid_ext( mbedtls_ssl_context *ssl,
-                              const unsigned char *buf,
-                              size_t len )
+static int ssl_parse_cid_ext(mbedtls_ssl_context *ssl,
+                             const unsigned char *buf,
+                             size_t len)
 {
     size_t peer_cid_len;
 
     /* CID extension only makes sense in DTLS */
-    if( ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /*
@@ -499,179 +477,170 @@
      *   struct {
      *      opaque cid<0..2^8-1>;
      *   } ConnectionId;
-    */
+     */
 
-    if( len < 1 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len < 1) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     peer_cid_len = *buf++;
     len--;
 
-    if( len != peer_cid_len )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len != peer_cid_len) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /* Ignore CID if the user has disabled its use. */
-    if( ssl->negotiate_cid == MBEDTLS_SSL_CID_DISABLED )
-    {
+    if (ssl->negotiate_cid == MBEDTLS_SSL_CID_DISABLED) {
         /* Leave ssl->handshake->cid_in_use in its default
          * value of MBEDTLS_SSL_CID_DISABLED. */
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "Client sent CID extension, but CID disabled" ) );
-        return( 0 );
+        MBEDTLS_SSL_DEBUG_MSG(3, ("Client sent CID extension, but CID disabled"));
+        return 0;
     }
 
-    if( peer_cid_len > MBEDTLS_SSL_CID_OUT_LEN_MAX )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (peer_cid_len > MBEDTLS_SSL_CID_OUT_LEN_MAX) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     ssl->handshake->cid_in_use = MBEDTLS_SSL_CID_ENABLED;
     ssl->handshake->peer_cid_len = (uint8_t) peer_cid_len;
-    memcpy( ssl->handshake->peer_cid, buf, peer_cid_len );
+    memcpy(ssl->handshake->peer_cid, buf, peer_cid_len);
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "Use of CID extension negotiated" ) );
-    MBEDTLS_SSL_DEBUG_BUF( 3, "Client CID", buf, peer_cid_len );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("Use of CID extension negotiated"));
+    MBEDTLS_SSL_DEBUG_BUF(3, "Client CID", buf, peer_cid_len);
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_truncated_hmac_ext( mbedtls_ssl_context *ssl,
-                                         const unsigned char *buf,
-                                         size_t len )
+static int ssl_parse_truncated_hmac_ext(mbedtls_ssl_context *ssl,
+                                        const unsigned char *buf,
+                                        size_t len)
 {
-    if( len != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     ((void) buf);
 
-    if( ssl->conf->trunc_hmac == MBEDTLS_SSL_TRUNC_HMAC_ENABLED )
+    if (ssl->conf->trunc_hmac == MBEDTLS_SSL_TRUNC_HMAC_ENABLED) {
         ssl->session_negotiate->trunc_hmac = MBEDTLS_SSL_TRUNC_HMAC_ENABLED;
+    }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_encrypt_then_mac_ext( mbedtls_ssl_context *ssl,
-                                      const unsigned char *buf,
-                                      size_t len )
+static int ssl_parse_encrypt_then_mac_ext(mbedtls_ssl_context *ssl,
+                                          const unsigned char *buf,
+                                          size_t len)
 {
-    if( len != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     ((void) buf);
 
-    if( ssl->conf->encrypt_then_mac == MBEDTLS_SSL_ETM_ENABLED &&
-        ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_0 )
-    {
+    if (ssl->conf->encrypt_then_mac == MBEDTLS_SSL_ETM_ENABLED &&
+        ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_0) {
         ssl->session_negotiate->encrypt_then_mac = MBEDTLS_SSL_ETM_ENABLED;
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */
 
 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_extended_ms_ext( mbedtls_ssl_context *ssl,
-                                      const unsigned char *buf,
-                                      size_t len )
+static int ssl_parse_extended_ms_ext(mbedtls_ssl_context *ssl,
+                                     const unsigned char *buf,
+                                     size_t len)
 {
-    if( len != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     ((void) buf);
 
-    if( ssl->conf->extended_ms == MBEDTLS_SSL_EXTENDED_MS_ENABLED &&
-        ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_0 )
-    {
+    if (ssl->conf->extended_ms == MBEDTLS_SSL_EXTENDED_MS_ENABLED &&
+        ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_0) {
         ssl->handshake->extended_ms = MBEDTLS_SSL_EXTENDED_MS_ENABLED;
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_EXTENDED_MASTER_SECRET */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_session_ticket_ext( mbedtls_ssl_context *ssl,
-                                         unsigned char *buf,
-                                         size_t len )
+static int ssl_parse_session_ticket_ext(mbedtls_ssl_context *ssl,
+                                        unsigned char *buf,
+                                        size_t len)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     mbedtls_ssl_session session;
 
-    mbedtls_ssl_session_init( &session );
+    mbedtls_ssl_session_init(&session);
 
-    if( ssl->conf->f_ticket_parse == NULL ||
-        ssl->conf->f_ticket_write == NULL )
-    {
-        return( 0 );
+    if (ssl->conf->f_ticket_parse == NULL ||
+        ssl->conf->f_ticket_write == NULL) {
+        return 0;
     }
 
     /* Remember the client asked us to send a new ticket */
     ssl->handshake->new_session_ticket = 1;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "ticket length: %" MBEDTLS_PRINTF_SIZET, len ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("ticket length: %" MBEDTLS_PRINTF_SIZET, len));
 
-    if( len == 0 )
-        return( 0 );
+    if (len == 0) {
+        return 0;
+    }
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "ticket rejected: renegotiating" ) );
-        return( 0 );
+    if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ticket rejected: renegotiating"));
+        return 0;
     }
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
 
     /*
      * Failures are ok: just ignore the ticket and proceed.
      */
-    if( ( ret = ssl->conf->f_ticket_parse( ssl->conf->p_ticket, &session,
-                                           buf, len ) ) != 0 )
-    {
-        mbedtls_ssl_session_free( &session );
+    if ((ret = ssl->conf->f_ticket_parse(ssl->conf->p_ticket, &session,
+                                         buf, len)) != 0) {
+        mbedtls_ssl_session_free(&session);
 
-        if( ret == MBEDTLS_ERR_SSL_INVALID_MAC )
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "ticket is not authentic" ) );
-        else if( ret == MBEDTLS_ERR_SSL_SESSION_TICKET_EXPIRED )
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "ticket is expired" ) );
-        else
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_ticket_parse", ret );
+        if (ret == MBEDTLS_ERR_SSL_INVALID_MAC) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("ticket is not authentic"));
+        } else if (ret == MBEDTLS_ERR_SSL_SESSION_TICKET_EXPIRED) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("ticket is expired"));
+        } else {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_ticket_parse", ret);
+        }
 
-        return( 0 );
+        return 0;
     }
 
     /*
@@ -679,37 +648,38 @@
      * inform them we're accepting the ticket  (RFC 5077 section 3.4)
      */
     session.id_len = ssl->session_negotiate->id_len;
-    memcpy( &session.id, ssl->session_negotiate->id, session.id_len );
+    memcpy(&session.id, ssl->session_negotiate->id, session.id_len);
 
-    mbedtls_ssl_session_free( ssl->session_negotiate );
-    memcpy( ssl->session_negotiate, &session, sizeof( mbedtls_ssl_session ) );
+    mbedtls_ssl_session_free(ssl->session_negotiate);
+    memcpy(ssl->session_negotiate, &session, sizeof(mbedtls_ssl_session));
 
     /* Zeroize instead of free as we copied the content */
-    mbedtls_platform_zeroize( &session, sizeof( mbedtls_ssl_session ) );
+    mbedtls_platform_zeroize(&session, sizeof(mbedtls_ssl_session));
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "session successfully restored from ticket" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("session successfully restored from ticket"));
 
     ssl->handshake->resume = 1;
 
     /* Don't send a new ticket after all, this one is OK */
     ssl->handshake->new_session_ticket = 0;
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
 #if defined(MBEDTLS_SSL_ALPN)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_alpn_ext( mbedtls_ssl_context *ssl,
-                               const unsigned char *buf, size_t len )
+static int ssl_parse_alpn_ext(mbedtls_ssl_context *ssl,
+                              const unsigned char *buf, size_t len)
 {
     size_t list_len, cur_len, ours_len;
     const unsigned char *theirs, *start, *end;
     const char **ours;
 
     /* If ALPN not configured, just ignore the extension */
-    if( ssl->conf->alpn_list == NULL )
-        return( 0 );
+    if (ssl->conf->alpn_list == NULL) {
+        return 0;
+    }
 
     /*
      * opaque ProtocolName<1..2^8-1>;
@@ -720,19 +690,17 @@
      */
 
     /* Min length is 2 (list_len) + 1 (name_len) + 1 (name) */
-    if( len < 4 )
-    {
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len < 4) {
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    list_len = ( buf[0] << 8 ) | buf[1];
-    if( list_len != len - 2 )
-    {
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    list_len = (buf[0] << 8) | buf[1];
+    if (list_len != len - 2) {
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /*
@@ -740,72 +708,65 @@
      */
     start = buf + 2;
     end = buf + len;
-    for( theirs = start; theirs != end; theirs += cur_len )
-    {
+    for (theirs = start; theirs != end; theirs += cur_len) {
         cur_len = *theirs++;
 
         /* Current identifier must fit in list */
-        if( cur_len > (size_t)( end - theirs ) )
-        {
-            mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                            MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        if (cur_len > (size_t) (end - theirs)) {
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
 
         /* Empty strings MUST NOT be included */
-        if( cur_len == 0 )
-        {
-            mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                            MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        if (cur_len == 0) {
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_ILLEGAL_PARAMETER);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
     }
 
     /*
      * Use our order of preference
      */
-    for( ours = ssl->conf->alpn_list; *ours != NULL; ours++ )
-    {
-        ours_len = strlen( *ours );
-        for( theirs = start; theirs != end; theirs += cur_len )
-        {
+    for (ours = ssl->conf->alpn_list; *ours != NULL; ours++) {
+        ours_len = strlen(*ours);
+        for (theirs = start; theirs != end; theirs += cur_len) {
             cur_len = *theirs++;
 
-            if( cur_len == ours_len &&
-                memcmp( theirs, *ours, cur_len ) == 0 )
-            {
+            if (cur_len == ours_len &&
+                memcmp(theirs, *ours, cur_len) == 0) {
                 ssl->alpn_chosen = *ours;
-                return( 0 );
+                return 0;
             }
         }
     }
 
     /* If we get there, no match was found */
-    mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                            MBEDTLS_SSL_ALERT_MSG_NO_APPLICATION_PROTOCOL );
-    return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                   MBEDTLS_SSL_ALERT_MSG_NO_APPLICATION_PROTOCOL);
+    return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
 }
 #endif /* MBEDTLS_SSL_ALPN */
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_use_srtp_ext( mbedtls_ssl_context *ssl,
-                                   const unsigned char *buf,
-                                   size_t len )
+static int ssl_parse_use_srtp_ext(mbedtls_ssl_context *ssl,
+                                  const unsigned char *buf,
+                                  size_t len)
 {
     mbedtls_ssl_srtp_profile client_protection = MBEDTLS_TLS_SRTP_UNSET;
-    size_t i,j;
+    size_t i, j;
     size_t profile_length;
     uint16_t mki_length;
     /*! 2 bytes for profile length and 1 byte for mki len */
     const size_t size_of_lengths = 3;
 
     /* If use_srtp is not configured, just ignore the extension */
-    if( ( ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM ) ||
-        ( ssl->conf->dtls_srtp_profile_list == NULL ) ||
-        ( ssl->conf->dtls_srtp_profile_list_len == 0 ) )
-    {
-        return( 0 );
+    if ((ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM) ||
+        (ssl->conf->dtls_srtp_profile_list == NULL) ||
+        (ssl->conf->dtls_srtp_profile_list_len == 0)) {
+        return 0;
     }
 
     /* RFC5764 section 4.1.1
@@ -825,86 +786,77 @@
      * Check here that we have at least 2 bytes of protection profiles length
      * and one of srtp_mki length
      */
-    if( len < size_of_lengths )
-    {
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (len < size_of_lengths) {
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-   ssl->dtls_srtp_info.chosen_dtls_srtp_profile = MBEDTLS_TLS_SRTP_UNSET;
+    ssl->dtls_srtp_info.chosen_dtls_srtp_profile = MBEDTLS_TLS_SRTP_UNSET;
 
     /* first 2 bytes are protection profile length(in bytes) */
-    profile_length = ( buf[0] << 8 ) | buf[1];
+    profile_length = (buf[0] << 8) | buf[1];
     buf += 2;
 
     /* The profile length cannot be bigger than input buffer size - lengths fields */
-    if( profile_length > len - size_of_lengths ||
-        profile_length % 2 != 0 ) /* profiles are 2 bytes long, so the length must be even */
-    {
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (profile_length > len - size_of_lengths ||
+        profile_length % 2 != 0) { /* profiles are 2 bytes long, so the length must be even */
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
     /*
      * parse the extension list values are defined in
      * http://www.iana.org/assignments/srtp-protection/srtp-protection.xhtml
      */
-    for( j = 0; j < profile_length; j += 2 )
-    {
+    for (j = 0; j < profile_length; j += 2) {
         uint16_t protection_profile_value = buf[j] << 8 | buf[j + 1];
-        client_protection = mbedtls_ssl_check_srtp_profile_value( protection_profile_value );
+        client_protection = mbedtls_ssl_check_srtp_profile_value(protection_profile_value);
 
-        if( client_protection != MBEDTLS_TLS_SRTP_UNSET )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "found srtp profile: %s",
-                                    mbedtls_ssl_get_srtp_profile_as_string(
-                                            client_protection ) ) );
-        }
-        else
-        {
+        if (client_protection != MBEDTLS_TLS_SRTP_UNSET) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("found srtp profile: %s",
+                                      mbedtls_ssl_get_srtp_profile_as_string(
+                                          client_protection)));
+        } else {
             continue;
         }
         /* check if suggested profile is in our list */
-        for( i = 0; i < ssl->conf->dtls_srtp_profile_list_len; i++)
-        {
-            if( client_protection == ssl->conf->dtls_srtp_profile_list[i] )
-            {
+        for (i = 0; i < ssl->conf->dtls_srtp_profile_list_len; i++) {
+            if (client_protection == ssl->conf->dtls_srtp_profile_list[i]) {
                 ssl->dtls_srtp_info.chosen_dtls_srtp_profile = ssl->conf->dtls_srtp_profile_list[i];
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "selected srtp profile: %s",
-                                            mbedtls_ssl_get_srtp_profile_as_string(
-                                                    client_protection ) ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("selected srtp profile: %s",
+                                          mbedtls_ssl_get_srtp_profile_as_string(
+                                              client_protection)));
                 break;
             }
         }
-        if( ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_TLS_SRTP_UNSET )
+        if (ssl->dtls_srtp_info.chosen_dtls_srtp_profile != MBEDTLS_TLS_SRTP_UNSET) {
             break;
+        }
     }
     buf += profile_length; /* buf points to the mki length */
     mki_length = *buf;
     buf++;
 
-    if( mki_length > MBEDTLS_TLS_SRTP_MAX_MKI_LENGTH ||
-        mki_length + profile_length + size_of_lengths != len )
-    {
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (mki_length > MBEDTLS_TLS_SRTP_MAX_MKI_LENGTH ||
+        mki_length + profile_length + size_of_lengths != len) {
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /* Parse the mki only if present and mki is supported locally */
-    if( ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED &&
-          mki_length > 0 )
-    {
+    if (ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED &&
+        mki_length > 0) {
         ssl->dtls_srtp_info.mki_len = mki_length;
 
-        memcpy( ssl->dtls_srtp_info.mki_value, buf, mki_length );
+        memcpy(ssl->dtls_srtp_info.mki_value, buf, mki_length);
 
-        MBEDTLS_SSL_DEBUG_BUF( 3, "using mki",  ssl->dtls_srtp_info.mki_value,
-                                                ssl->dtls_srtp_info.mki_len );
+        MBEDTLS_SSL_DEBUG_BUF(3, "using mki",  ssl->dtls_srtp_info.mki_value,
+                              ssl->dtls_srtp_info.mki_len);
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 
@@ -918,20 +870,20 @@
  */
 #if defined(MBEDTLS_ECDSA_C)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_check_key_curve( mbedtls_pk_context *pk,
-                                const mbedtls_ecp_curve_info **curves )
+static int ssl_check_key_curve(mbedtls_pk_context *pk,
+                               const mbedtls_ecp_curve_info **curves)
 {
     const mbedtls_ecp_curve_info **crv = curves;
-    mbedtls_ecp_group_id grp_id = mbedtls_pk_ec( *pk )->grp.id;
+    mbedtls_ecp_group_id grp_id = mbedtls_pk_ec(*pk)->grp.id;
 
-    while( *crv != NULL )
-    {
-        if( (*crv)->grp_id == grp_id )
-            return( 0 );
+    while (*crv != NULL) {
+        if ((*crv)->grp_id == grp_id) {
+            return 0;
+        }
         crv++;
     }
 
-    return( -1 );
+    return -1;
 }
 #endif /* MBEDTLS_ECDSA_C */
 
@@ -940,41 +892,39 @@
  * return 0 on success and -1 on failure.
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_pick_cert( mbedtls_ssl_context *ssl,
-                          const mbedtls_ssl_ciphersuite_t * ciphersuite_info )
+static int ssl_pick_cert(mbedtls_ssl_context *ssl,
+                         const mbedtls_ssl_ciphersuite_t *ciphersuite_info)
 {
     mbedtls_ssl_key_cert *cur, *list, *fallback = NULL;
     mbedtls_pk_type_t pk_alg =
-        mbedtls_ssl_get_ciphersuite_sig_pk_alg( ciphersuite_info );
+        mbedtls_ssl_get_ciphersuite_sig_pk_alg(ciphersuite_info);
     uint32_t flags;
 
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
-    if( ssl->handshake->sni_key_cert != NULL )
+    if (ssl->handshake->sni_key_cert != NULL) {
         list = ssl->handshake->sni_key_cert;
-    else
+    } else
 #endif
-        list = ssl->conf->key_cert;
+    list = ssl->conf->key_cert;
 
-    if( pk_alg == MBEDTLS_PK_NONE )
-        return( 0 );
-
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite requires certificate" ) );
-
-    if( list == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "server has no certificate" ) );
-        return( -1 );
+    if (pk_alg == MBEDTLS_PK_NONE) {
+        return 0;
     }
 
-    for( cur = list; cur != NULL; cur = cur->next )
-    {
-        flags = 0;
-        MBEDTLS_SSL_DEBUG_CRT( 3, "candidate certificate chain, certificate",
-                          cur->cert );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite requires certificate"));
 
-        if( ! mbedtls_pk_can_do( &cur->cert->pk, pk_alg ) )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "certificate mismatch: key type" ) );
+    if (list == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("server has no certificate"));
+        return -1;
+    }
+
+    for (cur = list; cur != NULL; cur = cur->next) {
+        flags = 0;
+        MBEDTLS_SSL_DEBUG_CRT(3, "candidate certificate chain, certificate",
+                              cur->cert);
+
+        if (!mbedtls_pk_can_do(&cur->cert->pk, pk_alg)) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("certificate mismatch: key type"));
             continue;
         }
 
@@ -986,19 +936,17 @@
          * different uses based on keyUsage, eg if they want to avoid signing
          * and decrypting with the same RSA key.
          */
-        if( mbedtls_ssl_check_cert_usage( cur->cert, ciphersuite_info,
-                                  MBEDTLS_SSL_IS_SERVER, &flags ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "certificate mismatch: "
-                                "(extended) key usage extension" ) );
+        if (mbedtls_ssl_check_cert_usage(cur->cert, ciphersuite_info,
+                                         MBEDTLS_SSL_IS_SERVER, &flags) != 0) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("certificate mismatch: "
+                                      "(extended) key usage extension"));
             continue;
         }
 
 #if defined(MBEDTLS_ECDSA_C)
-        if( pk_alg == MBEDTLS_PK_ECDSA &&
-            ssl_check_key_curve( &cur->cert->pk, ssl->handshake->curves ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "certificate mismatch: elliptic curve" ) );
+        if (pk_alg == MBEDTLS_PK_ECDSA &&
+            ssl_check_key_curve(&cur->cert->pk, ssl->handshake->curves) != 0) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("certificate mismatch: elliptic curve"));
             continue;
         }
 #endif
@@ -1008,15 +956,15 @@
          * present them a SHA-higher cert rather than failing if it's the only
          * one we got that satisfies the other conditions.
          */
-        if( ssl->minor_ver < MBEDTLS_SSL_MINOR_VERSION_3 &&
-            cur->cert->sig_md != MBEDTLS_MD_SHA1 )
-        {
-            if( fallback == NULL )
+        if (ssl->minor_ver < MBEDTLS_SSL_MINOR_VERSION_3 &&
+            cur->cert->sig_md != MBEDTLS_MD_SHA1) {
+            if (fallback == NULL) {
                 fallback = cur;
+            }
             {
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "certificate not preferred: "
-                                    "sha-2 with pre-TLS 1.2 client" ) );
-            continue;
+                MBEDTLS_SSL_DEBUG_MSG(3, ("certificate not preferred: "
+                                          "sha-2 with pre-TLS 1.2 client"));
+                continue;
             }
         }
 
@@ -1024,19 +972,19 @@
         break;
     }
 
-    if( cur == NULL )
+    if (cur == NULL) {
         cur = fallback;
-
-    /* Do not update ssl->handshake->key_cert unless there is a match */
-    if( cur != NULL )
-    {
-        ssl->handshake->key_cert = cur;
-        MBEDTLS_SSL_DEBUG_CRT( 3, "selected certificate chain, certificate",
-                          ssl->handshake->key_cert->cert );
-        return( 0 );
     }
 
-    return( -1 );
+    /* Do not update ssl->handshake->key_cert unless there is a match */
+    if (cur != NULL) {
+        ssl->handshake->key_cert = cur;
+        MBEDTLS_SSL_DEBUG_CRT(3, "selected certificate chain, certificate",
+                              ssl->handshake->key_cert->cert);
+        return 0;
+    }
+
+    return -1;
 }
 #endif /* MBEDTLS_X509_CRT_PARSE_C */
 
@@ -1045,8 +993,8 @@
  * Sets ciphersuite_info only if the suite matches.
  */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_ciphersuite_match( mbedtls_ssl_context *ssl, int suite_id,
-                                  const mbedtls_ssl_ciphersuite_t **ciphersuite_info )
+static int ssl_ciphersuite_match(mbedtls_ssl_context *ssl, int suite_id,
+                                 const mbedtls_ssl_ciphersuite_t **ciphersuite_info)
 {
     const mbedtls_ssl_ciphersuite_t *suite_info;
 
@@ -1055,68 +1003,63 @@
     mbedtls_pk_type_t sig_type;
 #endif
 
-    suite_info = mbedtls_ssl_ciphersuite_from_id( suite_id );
-    if( suite_info == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    suite_info = mbedtls_ssl_ciphersuite_from_id(suite_id);
+    if (suite_info == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "trying ciphersuite: %#04x (%s)",
-                                (unsigned int) suite_id, suite_info->name ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("trying ciphersuite: %#04x (%s)",
+                              (unsigned int) suite_id, suite_info->name));
 
-    if( suite_info->min_minor_ver > ssl->minor_ver ||
-        suite_info->max_minor_ver < ssl->minor_ver )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: version" ) );
-        return( 0 );
+    if (suite_info->min_minor_ver > ssl->minor_ver ||
+        suite_info->max_minor_ver < ssl->minor_ver) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite mismatch: version"));
+        return 0;
     }
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
-        ( suite_info->flags & MBEDTLS_CIPHERSUITE_NODTLS ) )
-        return( 0 );
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
+        (suite_info->flags & MBEDTLS_CIPHERSUITE_NODTLS)) {
+        return 0;
+    }
 #endif
 
 #if defined(MBEDTLS_ARC4_C)
-    if( ssl->conf->arc4_disabled == MBEDTLS_SSL_ARC4_DISABLED &&
-            suite_info->cipher == MBEDTLS_CIPHER_ARC4_128 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: rc4" ) );
-        return( 0 );
+    if (ssl->conf->arc4_disabled == MBEDTLS_SSL_ARC4_DISABLED &&
+        suite_info->cipher == MBEDTLS_CIPHER_ARC4_128) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite mismatch: rc4"));
+        return 0;
     }
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    if( suite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE &&
-        ( ssl->handshake->cli_exts & MBEDTLS_TLS_EXT_ECJPAKE_KKPP_OK ) == 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: ecjpake "
-                                    "not configured or ext missing" ) );
-        return( 0 );
+    if (suite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE &&
+        (ssl->handshake->cli_exts & MBEDTLS_TLS_EXT_ECJPAKE_KKPP_OK) == 0) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite mismatch: ecjpake "
+                                  "not configured or ext missing"));
+        return 0;
     }
 #endif
 
 
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C)
-    if( mbedtls_ssl_ciphersuite_uses_ec( suite_info ) &&
-        ( ssl->handshake->curves == NULL ||
-          ssl->handshake->curves[0] == NULL ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: "
-                            "no common elliptic curve" ) );
-        return( 0 );
+    if (mbedtls_ssl_ciphersuite_uses_ec(suite_info) &&
+        (ssl->handshake->curves == NULL ||
+         ssl->handshake->curves[0] == NULL)) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite mismatch: "
+                                  "no common elliptic curve"));
+        return 0;
     }
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
     /* If the ciphersuite requires a pre-shared key and we don't
      * have one, skip it now rather than failing later */
-    if( mbedtls_ssl_ciphersuite_uses_psk( suite_info ) &&
-        ssl_conf_has_psk_or_cb( ssl->conf ) == 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: no pre-shared key" ) );
-        return( 0 );
+    if (mbedtls_ssl_ciphersuite_uses_psk(suite_info) &&
+        ssl_conf_has_psk_or_cb(ssl->conf) == 0) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite mismatch: no pre-shared key"));
+        return 0;
     }
 #endif
 
@@ -1124,15 +1067,14 @@
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
     /* If the ciphersuite requires signing, check whether
      * a suitable hash algorithm is present. */
-    if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
-    {
-        sig_type = mbedtls_ssl_get_ciphersuite_sig_alg( suite_info );
-        if( sig_type != MBEDTLS_PK_NONE &&
-            mbedtls_ssl_sig_hash_set_find( &ssl->handshake->hash_algs, sig_type ) == MBEDTLS_MD_NONE )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: no suitable hash algorithm "
-                                        "for signature algorithm %u", (unsigned) sig_type ) );
-            return( 0 );
+    if (ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3) {
+        sig_type = mbedtls_ssl_get_ciphersuite_sig_alg(suite_info);
+        if (sig_type != MBEDTLS_PK_NONE &&
+            mbedtls_ssl_sig_hash_set_find(&ssl->handshake->hash_algs,
+                                          sig_type) == MBEDTLS_MD_NONE) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite mismatch: no suitable hash algorithm "
+                                      "for signature algorithm %u", (unsigned) sig_type));
+            return 0;
         }
     }
 
@@ -1147,21 +1089,20 @@
      * - try the next ciphersuite if we don't
      * This must be done last since we modify the key_cert list.
      */
-    if( ssl_pick_cert( ssl, suite_info ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciphersuite mismatch: "
-                            "no suitable certificate" ) );
-        return( 0 );
+    if (ssl_pick_cert(ssl, suite_info) != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(3, ("ciphersuite mismatch: "
+                                  "no suitable certificate"));
+        return 0;
     }
 #endif
 
     *ciphersuite_info = suite_info;
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_client_hello_v2( mbedtls_ssl_context *ssl )
+static int ssl_parse_client_hello_v2(mbedtls_ssl_context *ssl)
 {
     int ret, got_common_suite;
     unsigned int i, j;
@@ -1171,28 +1112,27 @@
     const int *ciphersuites;
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse client hello v2" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse client hello v2"));
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "client hello v2 illegal for renegotiation" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("client hello v2 illegal for renegotiation"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
 
     buf = ssl->in_hdr;
 
-    MBEDTLS_SSL_DEBUG_BUF( 4, "record header", buf, 5 );
+    MBEDTLS_SSL_DEBUG_BUF(4, "record header", buf, 5);
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v2, message type: %d",
-                   buf[2] ) );
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v2, message len.: %d",
-                   ( ( buf[0] & 0x7F ) << 8 ) | buf[1] ) );
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v2, max. version: [%d:%d]",
-                   buf[3], buf[4] ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v2, message type: %d",
+                              buf[2]));
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v2, message len.: %d",
+                              ((buf[0] & 0x7F) << 8) | buf[1]));
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v2, max. version: [%d:%d]",
+                              buf[3], buf[4]));
 
     /*
      * SSLv2 Client Hello
@@ -1204,47 +1144,43 @@
      *     2  .   2   message type
      *     3  .   4   protocol version
      */
-    if( buf[2] != MBEDTLS_SSL_HS_CLIENT_HELLO ||
-        buf[3] != MBEDTLS_SSL_MAJOR_VERSION_3 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (buf[2] != MBEDTLS_SSL_HS_CLIENT_HELLO ||
+        buf[3] != MBEDTLS_SSL_MAJOR_VERSION_3) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    n = ( ( buf[0] << 8 ) | buf[1] ) & 0x7FFF;
+    n = ((buf[0] << 8) | buf[1]) & 0x7FFF;
 
-    if( n < 17 || n > 512 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (n < 17 || n > 512) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     ssl->major_ver = MBEDTLS_SSL_MAJOR_VERSION_3;
-    ssl->minor_ver = ( buf[4] <= ssl->conf->max_minor_ver )
+    ssl->minor_ver = (buf[4] <= ssl->conf->max_minor_ver)
                      ? buf[4]  : ssl->conf->max_minor_ver;
 
-    if( ssl->minor_ver < ssl->conf->min_minor_ver )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "client only supports ssl smaller than minimum"
-                            " [%d:%d] < [%d:%d]",
-                            ssl->major_ver, ssl->minor_ver,
-                            ssl->conf->min_major_ver, ssl->conf->min_minor_ver ) );
+    if (ssl->minor_ver < ssl->conf->min_minor_ver) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("client only supports ssl smaller than minimum"
+                                  " [%d:%d] < [%d:%d]",
+                                  ssl->major_ver, ssl->minor_ver,
+                                  ssl->conf->min_major_ver, ssl->conf->min_minor_ver));
 
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                     MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION );
-        return( MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION );
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION);
+        return MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION;
     }
 
     ssl->handshake->max_major_ver = buf[3];
     ssl->handshake->max_minor_ver = buf[4];
 
-    if( ( ret = mbedtls_ssl_fetch_input( ssl, 2 + n ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_fetch_input", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_fetch_input(ssl, 2 + n)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_fetch_input", ret);
+        return ret;
     }
 
-    ssl->handshake->update_checksum( ssl, buf + 2, n );
+    ssl->handshake->update_checksum(ssl, buf + 2, n);
 
     buf = ssl->in_msg;
     n = ssl->in_left - 5;
@@ -1257,76 +1193,69 @@
      *   ..  .  ..   session id
      *   ..  .  ..   challenge
      */
-    MBEDTLS_SSL_DEBUG_BUF( 4, "record contents", buf, n );
+    MBEDTLS_SSL_DEBUG_BUF(4, "record contents", buf, n);
 
-    ciph_len = ( buf[0] << 8 ) | buf[1];
-    sess_len = ( buf[2] << 8 ) | buf[3];
-    chal_len = ( buf[4] << 8 ) | buf[5];
+    ciph_len = (buf[0] << 8) | buf[1];
+    sess_len = (buf[2] << 8) | buf[3];
+    chal_len = (buf[4] << 8) | buf[5];
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "ciph_len: %u, sess_len: %u, chal_len: %u",
-                   ciph_len, sess_len, chal_len ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("ciph_len: %u, sess_len: %u, chal_len: %u",
+                              ciph_len, sess_len, chal_len));
 
     /*
      * Make sure each parameter length is valid
      */
-    if( ciph_len < 3 || ( ciph_len % 3 ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (ciph_len < 3 || (ciph_len % 3) != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    if( sess_len > 32 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (sess_len > 32) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    if( chal_len < 8 || chal_len > 32 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (chal_len < 8 || chal_len > 32) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    if( n != 6 + ciph_len + sess_len + chal_len )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (n != 6 + ciph_len + sess_len + chal_len) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, ciphersuitelist",
-                   buf + 6, ciph_len );
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, session id",
-                   buf + 6 + ciph_len, sess_len );
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, challenge",
-                   buf + 6 + ciph_len + sess_len, chal_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, ciphersuitelist",
+                          buf + 6, ciph_len);
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, session id",
+                          buf + 6 + ciph_len, sess_len);
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, challenge",
+                          buf + 6 + ciph_len + sess_len, chal_len);
 
     p = buf + 6 + ciph_len;
     ssl->session_negotiate->id_len = sess_len;
-    memset( ssl->session_negotiate->id, 0,
-            sizeof( ssl->session_negotiate->id ) );
-    memcpy( ssl->session_negotiate->id, p, ssl->session_negotiate->id_len );
+    memset(ssl->session_negotiate->id, 0,
+           sizeof(ssl->session_negotiate->id));
+    memcpy(ssl->session_negotiate->id, p, ssl->session_negotiate->id_len);
 
     p += sess_len;
-    memset( ssl->handshake->randbytes, 0, 64 );
-    memcpy( ssl->handshake->randbytes + 32 - chal_len, p, chal_len );
+    memset(ssl->handshake->randbytes, 0, 64);
+    memcpy(ssl->handshake->randbytes + 32 - chal_len, p, chal_len);
 
     /*
      * Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV
      */
-    for( i = 0, p = buf + 6; i < ciph_len; i += 3, p += 3 )
-    {
-        if( p[0] == 0 && p[1] == 0 && p[2] == MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "received TLS_EMPTY_RENEGOTIATION_INFO " ) );
+    for (i = 0, p = buf + 6; i < ciph_len; i += 3, p += 3) {
+        if (p[0] == 0 && p[1] == 0 && p[2] == MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("received TLS_EMPTY_RENEGOTIATION_INFO "));
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-            if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "received RENEGOTIATION SCSV "
-                                    "during renegotiation" ) );
+            if (ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("received RENEGOTIATION SCSV "
+                                          "during renegotiation"));
 
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                                MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+                mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                               MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+                return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
             }
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
             ssl->secure_renegotiation = MBEDTLS_SSL_SECURE_RENEGOTIATION;
@@ -1335,21 +1264,18 @@
     }
 
 #if defined(MBEDTLS_SSL_FALLBACK_SCSV)
-    for( i = 0, p = buf + 6; i < ciph_len; i += 3, p += 3 )
-    {
-        if( p[0] == 0 &&
-            MBEDTLS_GET_UINT16_BE(p, 1) != MBEDTLS_SSL_FALLBACK_SCSV_VALUE )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "received FALLBACK_SCSV" ) );
+    for (i = 0, p = buf + 6; i < ciph_len; i += 3, p += 3) {
+        if (p[0] == 0 &&
+            MBEDTLS_GET_UINT16_BE(p, 1) != MBEDTLS_SSL_FALLBACK_SCSV_VALUE) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("received FALLBACK_SCSV"));
 
-            if( ssl->minor_ver < ssl->conf->max_minor_ver )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "inapropriate fallback" ) );
+            if (ssl->minor_ver < ssl->conf->max_minor_ver) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("inapropriate fallback"));
 
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_INAPROPRIATE_FALLBACK );
+                mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                               MBEDTLS_SSL_ALERT_MSG_INAPROPRIATE_FALLBACK);
 
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+                return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
             }
 
             break;
@@ -1361,55 +1287,58 @@
     ciphersuites = ssl->conf->ciphersuite_list[ssl->minor_ver];
     ciphersuite_info = NULL;
 #if defined(MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
-    for( j = 0, p = buf + 6; j < ciph_len; j += 3, p += 3 )
-        for( i = 0; ciphersuites[i] != 0; i++ )
-        {
-            if( p[0] != 0 ||
-                MBEDTLS_GET_UINT16_BE(p, 1) != ciphersuites[i] )
+    for (j = 0, p = buf + 6; j < ciph_len; j += 3, p += 3) {
+        for (i = 0; ciphersuites[i] != 0; i++) {
+            if (p[0] != 0 ||
+                MBEDTLS_GET_UINT16_BE(p, 1) != ciphersuites[i]) {
                 continue;
+            }
 
             got_common_suite = 1;
 
-            if( ( ret = ssl_ciphersuite_match( ssl, ciphersuites[i],
-                                               &ciphersuite_info ) ) != 0 )
-                return( ret );
+            if ((ret = ssl_ciphersuite_match(ssl, ciphersuites[i],
+                                             &ciphersuite_info)) != 0) {
+                return ret;
+            }
 
-            if( ciphersuite_info != NULL )
+            if (ciphersuite_info != NULL) {
                 goto have_ciphersuite_v2;
+            }
         }
+    }
 #else
-    for( i = 0; ciphersuites[i] != 0; i++ )
-        for( j = 0, p = buf + 6; j < ciph_len; j += 3, p += 3 )
-        {
-            if( p[0] != 0 ||
-                MBEDTLS_GET_UINT16_BE(p, 1) != ciphersuites[i] )
+    for (i = 0; ciphersuites[i] != 0; i++) {
+        for (j = 0, p = buf + 6; j < ciph_len; j += 3, p += 3) {
+            if (p[0] != 0 ||
+                MBEDTLS_GET_UINT16_BE(p, 1) != ciphersuites[i]) {
                 continue;
+            }
 
             got_common_suite = 1;
 
-            if( ( ret = ssl_ciphersuite_match( ssl, ciphersuites[i],
-                                               &ciphersuite_info ) ) != 0 )
-                return( ret );
+            if ((ret = ssl_ciphersuite_match(ssl, ciphersuites[i],
+                                             &ciphersuite_info)) != 0) {
+                return ret;
+            }
 
-            if( ciphersuite_info != NULL )
+            if (ciphersuite_info != NULL) {
                 goto have_ciphersuite_v2;
+            }
         }
+    }
 #endif
 
-    if( got_common_suite )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "got ciphersuites in common, "
-                            "but none of them usable" ) );
-        return( MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE );
-    }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no ciphersuites in common" ) );
-        return( MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN );
+    if (got_common_suite) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("got ciphersuites in common, "
+                                  "but none of them usable"));
+        return MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE;
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("got no ciphersuites in common"));
+        return MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN;
     }
 
 have_ciphersuite_v2:
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "selected ciphersuite: %s", ciphersuite_info->name ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("selected ciphersuite: %s", ciphersuite_info->name));
 
     ssl->session_negotiate->ciphersuite = ciphersuites[i];
     ssl->handshake->ciphersuite_info = ciphersuite_info;
@@ -1417,21 +1346,20 @@
     /*
      * SSLv2 Client Hello relevant renegotiation security checks
      */
-    if( ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION &&
-        ssl->conf->allow_legacy_renegotiation == MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "legacy renegotiation, breaking off handshake" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION &&
+        ssl->conf->allow_legacy_renegotiation == MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("legacy renegotiation, breaking off handshake"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     ssl->in_left = 0;
     ssl->state++;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse client hello v2" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse client hello v2"));
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO */
 
@@ -1439,7 +1367,7 @@
    ClientHello parsing because they might indicate that the client is
    not talking SSL/TLS at all and would not understand our alert. */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_client_hello( mbedtls_ssl_context *ssl )
+static int ssl_parse_client_hello(mbedtls_ssl_context *ssl)
 {
     int ret, got_common_suite;
     size_t i, j;
@@ -1466,7 +1394,7 @@
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 &&
           MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse client hello" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse client hello"));
 
     int renegotiating = 0;
 #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
@@ -1478,16 +1406,15 @@
      * ClientHello, which doesn't use the same record layer format.
      */
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE )
+    if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
         renegotiating = 1;
+    }
 #endif
-    if( !renegotiating )
-    {
-        if( ( ret = mbedtls_ssl_fetch_input( ssl, 5 ) ) != 0 )
-        {
+    if (!renegotiating) {
+        if ((ret = mbedtls_ssl_fetch_input(ssl, 5)) != 0) {
             /* No alert on a read error. */
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_fetch_input", ret );
-            return( ret );
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_fetch_input", ret);
+            return ret;
         }
     }
 
@@ -1496,15 +1423,18 @@
 #if defined(MBEDTLS_SSL_SRV_SUPPORT_SSLV2_CLIENT_HELLO)
     int is_dtls = 0;
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
         is_dtls = 1;
+    }
 #endif
-    if( !is_dtls )
-        if( ( buf[0] & 0x80 ) != 0 )
-            return( ssl_parse_client_hello_v2( ssl ) );
+    if (!is_dtls) {
+        if ((buf[0] & 0x80) != 0) {
+            return ssl_parse_client_hello_v2(ssl);
+        }
+    }
 #endif
 
-    MBEDTLS_SSL_DEBUG_BUF( 4, "record header", buf, mbedtls_ssl_in_hdr_len( ssl ) );
+    MBEDTLS_SSL_DEBUG_BUF(4, "record header", buf, mbedtls_ssl_in_hdr_len(ssl));
 
     /*
      * SSLv3/TLS Client Hello
@@ -1515,104 +1445,95 @@
      *     3  .   11  DTLS: epoch + record sequence number
      *     3  .   4   message length
      */
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, message type: %d",
-                   buf[0] ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, message type: %d",
+                              buf[0]));
 
-    if( buf[0] != MBEDTLS_SSL_MSG_HANDSHAKE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (buf[0] != MBEDTLS_SSL_MSG_HANDSHAKE) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, message len.: %d",
-                   ( ssl->in_len[0] << 8 ) | ssl->in_len[1] ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, message len.: %d",
+                              (ssl->in_len[0] << 8) | ssl->in_len[1]));
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, protocol version: [%d:%d]",
-                   buf[1], buf[2] ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, protocol version: [%d:%d]",
+                              buf[1], buf[2]));
 
-    mbedtls_ssl_read_version( &major, &minor, ssl->conf->transport, buf + 1 );
+    mbedtls_ssl_read_version(&major, &minor, ssl->conf->transport, buf + 1);
 
     /* According to RFC 5246 Appendix E.1, the version here is typically
      * "{03,00}, the lowest version number supported by the client, [or] the
      * value of ClientHello.client_version", so the only meaningful check here
      * is the major version shouldn't be less than 3 */
-    if( major < MBEDTLS_SSL_MAJOR_VERSION_3 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (major < MBEDTLS_SSL_MAJOR_VERSION_3) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /* For DTLS if this is the initial handshake, remember the client sequence
      * number to use it in our next message (RFC 6347 4.2.1) */
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
         && ssl->renego_status == MBEDTLS_SSL_INITIAL_HANDSHAKE
 #endif
-        )
-    {
+        ) {
         /* Epoch should be 0 for initial handshakes */
-        if( ssl->in_ctr[0] != 0 || ssl->in_ctr[1] != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        if (ssl->in_ctr[0] != 0 || ssl->in_ctr[1] != 0) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
 
-        memcpy( ssl->cur_out_ctr + 2, ssl->in_ctr + 2, 6 );
+        memcpy(ssl->cur_out_ctr + 2, ssl->in_ctr + 2, 6);
 
 #if defined(MBEDTLS_SSL_DTLS_ANTI_REPLAY)
-        if( mbedtls_ssl_dtls_replay_check( ssl ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "replayed record, discarding" ) );
+        if (mbedtls_ssl_dtls_replay_check(ssl) != 0) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("replayed record, discarding"));
             ssl->next_record_offset = 0;
             ssl->in_left = 0;
             goto read_record_header;
         }
 
         /* No MAC to check yet, so we can update right now */
-        mbedtls_ssl_dtls_replay_update( ssl );
+        mbedtls_ssl_dtls_replay_update(ssl);
 #endif
     }
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
-    msg_len = ( ssl->in_len[0] << 8 ) | ssl->in_len[1];
+    msg_len = (ssl->in_len[0] << 8) | ssl->in_len[1];
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE )
-    {
+    if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
         /* Set by mbedtls_ssl_read_record() */
         msg_len = ssl->in_hslen;
-    }
-    else
+    } else
 #endif
     {
-        if( msg_len > MBEDTLS_SSL_IN_CONTENT_LEN )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        if (msg_len > MBEDTLS_SSL_IN_CONTENT_LEN) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
 
-        if( ( ret = mbedtls_ssl_fetch_input( ssl,
-                       mbedtls_ssl_in_hdr_len( ssl ) + msg_len ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_fetch_input", ret );
-            return( ret );
+        if ((ret = mbedtls_ssl_fetch_input(ssl,
+                                           mbedtls_ssl_in_hdr_len(ssl) + msg_len)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_fetch_input", ret);
+            return ret;
         }
 
-    /* Done reading this record, get ready for the next one */
+        /* Done reading this record, get ready for the next one */
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-        if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-            ssl->next_record_offset = msg_len + mbedtls_ssl_in_hdr_len( ssl );
-        else
+        if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
+            ssl->next_record_offset = msg_len + mbedtls_ssl_in_hdr_len(ssl);
+        } else
 #endif
-            ssl->in_left = 0;
+        ssl->in_left = 0;
     }
 
     buf = ssl->in_msg;
 
-    MBEDTLS_SSL_DEBUG_BUF( 4, "record contents", buf, msg_len );
+    MBEDTLS_SSL_DEBUG_BUF(4, "record contents", buf, msg_len);
 
-    ssl->handshake->update_checksum( ssl, buf, msg_len );
+    ssl->handshake->update_checksum(ssl, buf, msg_len);
 
     /*
      * Handshake layer:
@@ -1622,68 +1543,60 @@
      *     6  .   8   DTLS only: fragment offset
      *     9  .  11   DTLS only: fragment length
      */
-    if( msg_len < mbedtls_ssl_hs_hdr_len( ssl ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (msg_len < mbedtls_ssl_hs_hdr_len(ssl)) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, handshake type: %d", buf[0] ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, handshake type: %d", buf[0]));
 
-    if( buf[0] != MBEDTLS_SSL_HS_CLIENT_HELLO )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (buf[0] != MBEDTLS_SSL_HS_CLIENT_HELLO) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, handshake len.: %d",
-                   ( buf[1] << 16 ) | ( buf[2] << 8 ) | buf[3] ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, handshake len.: %d",
+                              (buf[1] << 16) | (buf[2] << 8) | buf[3]));
 
-    if( buf[1] != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message: %u != 0",
-                                    (unsigned) buf[1] ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (buf[1] != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message: %u != 0",
+                                  (unsigned) buf[1]));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
     /* We don't support fragmentation of ClientHello (yet?) */
-    if( msg_len != mbedtls_ssl_hs_hdr_len( ssl ) + ( ( buf[2] << 8 ) | buf[3] ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message: %u != %u + %u",
-                                    (unsigned) msg_len,
-                                    (unsigned) mbedtls_ssl_hs_hdr_len( ssl ),
-                                    (unsigned) ( buf[2] << 8 ) | buf[3] ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (msg_len != mbedtls_ssl_hs_hdr_len(ssl) + ((buf[2] << 8) | buf[3])) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message: %u != %u + %u",
+                                  (unsigned) msg_len,
+                                  (unsigned) mbedtls_ssl_hs_hdr_len(ssl),
+                                  (unsigned) (buf[2] << 8) | buf[3]));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
         /*
          * Copy the client's handshake message_seq on initial handshakes,
          * check sequence number on renego.
          */
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-        if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS )
-        {
+        if (ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS) {
             /* This couldn't be done in ssl_prepare_handshake_record() */
-            unsigned int cli_msg_seq = ( ssl->in_msg[4] << 8 ) |
-                                         ssl->in_msg[5];
+            unsigned int cli_msg_seq = (ssl->in_msg[4] << 8) |
+                                       ssl->in_msg[5];
 
-            if( cli_msg_seq != ssl->handshake->in_msg_seq )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message_seq: "
-                                    "%u (expected %u)", cli_msg_seq,
-                                    ssl->handshake->in_msg_seq ) );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+            if (cli_msg_seq != ssl->handshake->in_msg_seq) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message_seq: "
+                                          "%u (expected %u)", cli_msg_seq,
+                                          ssl->handshake->in_msg_seq));
+                return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
             }
 
             ssl->handshake->in_msg_seq++;
-        }
-        else
+        } else
 #endif
         {
-            unsigned int cli_msg_seq = ( ssl->in_msg[4] << 8 ) |
-                                         ssl->in_msg[5];
+            unsigned int cli_msg_seq = (ssl->in_msg[4] << 8) |
+                                       ssl->in_msg[5];
             ssl->handshake->out_msg_seq = cli_msg_seq;
             ssl->handshake->in_msg_seq  = cli_msg_seq + 1;
         }
@@ -1693,21 +1606,20 @@
          * fragment_offset == 0 and fragment_length == length
          */
         MBEDTLS_SSL_DEBUG_MSG(
-            4, ( "fragment_offset=%u fragment_length=%u length=%u",
-                 (unsigned) ( ssl->in_msg[6] << 16 | ssl->in_msg[7] << 8 | ssl->in_msg[8] ),
-                 (unsigned) ( ssl->in_msg[9] << 16 | ssl->in_msg[10] << 8 | ssl->in_msg[11] ),
-                 (unsigned) ( ssl->in_msg[1] << 16 | ssl->in_msg[2] << 8 | ssl->in_msg[3] ) ) );
-        if( ssl->in_msg[6] != 0 || ssl->in_msg[7] != 0 || ssl->in_msg[8] != 0 ||
-            memcmp( ssl->in_msg + 1, ssl->in_msg + 9, 3 ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "ClientHello fragmentation not supported" ) );
-            return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+            4, ("fragment_offset=%u fragment_length=%u length=%u",
+                (unsigned) (ssl->in_msg[6] << 16 | ssl->in_msg[7] << 8 | ssl->in_msg[8]),
+                (unsigned) (ssl->in_msg[9] << 16 | ssl->in_msg[10] << 8 | ssl->in_msg[11]),
+                (unsigned) (ssl->in_msg[1] << 16 | ssl->in_msg[2] << 8 | ssl->in_msg[3])));
+        if (ssl->in_msg[6] != 0 || ssl->in_msg[7] != 0 || ssl->in_msg[8] != 0 ||
+            memcmp(ssl->in_msg + 1, ssl->in_msg + 9, 3) != 0) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("ClientHello fragmentation not supported"));
+            return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
         }
     }
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
-    buf += mbedtls_ssl_hs_hdr_len( ssl );
-    msg_len -= mbedtls_ssl_hs_hdr_len( ssl );
+    buf += mbedtls_ssl_hs_hdr_len(ssl);
+    msg_len -= mbedtls_ssl_hs_hdr_len(ssl);
 
     /*
      * ClientHello layer:
@@ -1730,150 +1642,136 @@
      * 2 + 32 + 1 + 2 + 1 = 38 bytes. Check that first, so that we can
      * read at least up to session id length without worrying.
      */
-    if( msg_len < 38 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (msg_len < 38) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /*
      * Check and save the protocol version
      */
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, version", buf, 2 );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, version", buf, 2);
 
-    mbedtls_ssl_read_version( &ssl->major_ver, &ssl->minor_ver,
-                      ssl->conf->transport, buf );
+    mbedtls_ssl_read_version(&ssl->major_ver, &ssl->minor_ver,
+                             ssl->conf->transport, buf);
 
     ssl->handshake->max_major_ver = ssl->major_ver;
     ssl->handshake->max_minor_ver = ssl->minor_ver;
 
-    if( ssl->major_ver < ssl->conf->min_major_ver ||
-        ssl->minor_ver < ssl->conf->min_minor_ver )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "client only supports ssl smaller than minimum"
-                            " [%d:%d] < [%d:%d]",
-                            ssl->major_ver, ssl->minor_ver,
-                            ssl->conf->min_major_ver, ssl->conf->min_minor_ver ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                     MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION );
-        return( MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION );
+    if (ssl->major_ver < ssl->conf->min_major_ver ||
+        ssl->minor_ver < ssl->conf->min_minor_ver) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("client only supports ssl smaller than minimum"
+                                  " [%d:%d] < [%d:%d]",
+                                  ssl->major_ver, ssl->minor_ver,
+                                  ssl->conf->min_major_ver, ssl->conf->min_minor_ver));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION);
+        return MBEDTLS_ERR_SSL_BAD_HS_PROTOCOL_VERSION;
     }
 
-    if( ssl->major_ver > ssl->conf->max_major_ver )
-    {
+    if (ssl->major_ver > ssl->conf->max_major_ver) {
         ssl->major_ver = ssl->conf->max_major_ver;
         ssl->minor_ver = ssl->conf->max_minor_ver;
-    }
-    else if( ssl->minor_ver > ssl->conf->max_minor_ver )
+    } else if (ssl->minor_ver > ssl->conf->max_minor_ver) {
         ssl->minor_ver = ssl->conf->max_minor_ver;
+    }
 
     /*
      * Save client random (inc. Unix time)
      */
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, random bytes", buf + 2, 32 );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, random bytes", buf + 2, 32);
 
-    memcpy( ssl->handshake->randbytes, buf + 2, 32 );
+    memcpy(ssl->handshake->randbytes, buf + 2, 32);
 
     /*
      * Check the session ID length and save session ID
      */
     sess_len = buf[34];
 
-    if( sess_len > sizeof( ssl->session_negotiate->id ) ||
-        sess_len + 34 + 2 > msg_len ) /* 2 for cipherlist length field */
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (sess_len > sizeof(ssl->session_negotiate->id) ||
+        sess_len + 34 + 2 > msg_len) { /* 2 for cipherlist length field */
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, session id", buf + 35, sess_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, session id", buf + 35, sess_len);
 
     ssl->session_negotiate->id_len = sess_len;
-    memset( ssl->session_negotiate->id, 0,
-            sizeof( ssl->session_negotiate->id ) );
-    memcpy( ssl->session_negotiate->id, buf + 35,
-            ssl->session_negotiate->id_len );
+    memset(ssl->session_negotiate->id, 0,
+           sizeof(ssl->session_negotiate->id));
+    memcpy(ssl->session_negotiate->id, buf + 35,
+           ssl->session_negotiate->id_len);
 
     /*
      * Check the cookie length and content
      */
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-    {
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
         cookie_offset = 35 + sess_len;
         cookie_len = buf[cookie_offset];
 
-        if( cookie_offset + 1 + cookie_len + 2 > msg_len )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-            mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                            MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        if (cookie_offset + 1 + cookie_len + 2 > msg_len) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_PROTOCOL_VERSION);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
 
-        MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, cookie",
-                       buf + cookie_offset + 1, cookie_len );
+        MBEDTLS_SSL_DEBUG_BUF(3, "client hello, cookie",
+                              buf + cookie_offset + 1, cookie_len);
 
 #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
-        if( ssl->conf->f_cookie_check != NULL
+        if (ssl->conf->f_cookie_check != NULL
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
             && ssl->renego_status == MBEDTLS_SSL_INITIAL_HANDSHAKE
 #endif
-            )
-        {
-            if( ssl->conf->f_cookie_check( ssl->conf->p_cookie,
-                                     buf + cookie_offset + 1, cookie_len,
-                                     ssl->cli_id, ssl->cli_id_len ) != 0 )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 2, ( "cookie verification failed" ) );
+            ) {
+            if (ssl->conf->f_cookie_check(ssl->conf->p_cookie,
+                                          buf + cookie_offset + 1, cookie_len,
+                                          ssl->cli_id, ssl->cli_id_len) != 0) {
+                MBEDTLS_SSL_DEBUG_MSG(2, ("cookie verification failed"));
                 ssl->handshake->verify_cookie_len = 1;
-            }
-            else
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 2, ( "cookie verification passed" ) );
+            } else {
+                MBEDTLS_SSL_DEBUG_MSG(2, ("cookie verification passed"));
                 ssl->handshake->verify_cookie_len = 0;
             }
-        }
-        else
+        } else
 #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */
         {
             /* We know we didn't send a cookie, so it should be empty */
-            if( cookie_len != 0 )
-            {
+            if (cookie_len != 0) {
                 /* This may be an attacker's probe, so don't send an alert */
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+                MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+                return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
             }
 
-            MBEDTLS_SSL_DEBUG_MSG( 2, ( "cookie verification skipped" ) );
+            MBEDTLS_SSL_DEBUG_MSG(2, ("cookie verification skipped"));
         }
 
-    /*
-     * Check the ciphersuitelist length (will be parsed later)
-     */
+        /*
+         * Check the ciphersuitelist length (will be parsed later)
+         */
         ciph_offset = cookie_offset + 1 + cookie_len;
-    }
-    else
+    } else
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
-        ciph_offset = 35 + sess_len;
+    ciph_offset = 35 + sess_len;
 
-    ciph_len = ( buf[ciph_offset + 0] << 8 )
-             | ( buf[ciph_offset + 1]      );
+    ciph_len = (buf[ciph_offset + 0] << 8)
+               | (buf[ciph_offset + 1]);
 
-    if( ciph_len < 2 ||
+    if (ciph_len < 2 ||
         ciph_len + 2 + ciph_offset + 1 > msg_len || /* 1 for comp. alg. len */
-        ( ciph_len % 2 ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        (ciph_len % 2) != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, ciphersuitelist",
-                   buf + ciph_offset + 2,  ciph_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, ciphersuitelist",
+                          buf + ciph_offset + 2,  ciph_len);
 
     /*
      * Check the compression algorithms length and pick one
@@ -1882,25 +1780,22 @@
 
     comp_len = buf[comp_offset];
 
-    if( comp_len < 1 ||
+    if (comp_len < 1 ||
         comp_len > 16 ||
-        comp_len + comp_offset + 1 > msg_len )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+        comp_len + comp_offset + 1 > msg_len) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "client hello, compression",
-                      buf + comp_offset + 1, comp_len );
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello, compression",
+                          buf + comp_offset + 1, comp_len);
 
     ssl->session_negotiate->compression = MBEDTLS_SSL_COMPRESS_NULL;
 #if defined(MBEDTLS_ZLIB_SUPPORT)
-    for( i = 0; i < comp_len; ++i )
-    {
-        if( buf[comp_offset + 1 + i] == MBEDTLS_SSL_COMPRESS_DEFLATE )
-        {
+    for (i = 0; i < comp_len; ++i) {
+        if (buf[comp_offset + 1 + i] == MBEDTLS_SSL_COMPRESS_DEFLATE) {
             ssl->session_negotiate->compression = MBEDTLS_SSL_COMPRESS_DEFLATE;
             break;
         }
@@ -1909,99 +1804,97 @@
 
     /* See comments in ssl_write_client_hello() */
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
         ssl->session_negotiate->compression = MBEDTLS_SSL_COMPRESS_NULL;
+    }
 #endif
 
     /* Do not parse the extensions if the protocol is SSLv3 */
 #if defined(MBEDTLS_SSL_PROTO_SSL3)
-    if( ( ssl->major_ver != 3 ) || ( ssl->minor_ver != 0 ) )
-    {
+    if ((ssl->major_ver != 3) || (ssl->minor_ver != 0)) {
 #endif
-        /*
-         * Check the extension length
-         */
-        ext_offset = comp_offset + 1 + comp_len;
-        if( msg_len > ext_offset )
-        {
-            if( msg_len < ext_offset + 2 )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                                MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
-            }
-
-            ext_len = ( buf[ext_offset + 0] << 8 )
-                    | ( buf[ext_offset + 1]      );
-
-            if( msg_len != ext_offset + 2 + ext_len )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                                MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
-            }
+    /*
+     * Check the extension length
+     */
+    ext_offset = comp_offset + 1 + comp_len;
+    if (msg_len > ext_offset) {
+        if (msg_len < ext_offset + 2) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
         }
-        else
-            ext_len = 0;
 
-        ext = buf + ext_offset + 2;
-        MBEDTLS_SSL_DEBUG_BUF( 3, "client hello extensions", ext, ext_len );
+        ext_len = (buf[ext_offset + 0] << 8)
+                  | (buf[ext_offset + 1]);
 
-        while( ext_len != 0 )
-        {
-            unsigned int ext_id;
-            unsigned int ext_size;
-            if ( ext_len < 4 ) {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                               MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
-            }
-            ext_id   = ( ( ext[0] <<  8 ) | ( ext[1] ) );
-            ext_size = ( ( ext[2] <<  8 ) | ( ext[3] ) );
+        if (msg_len != ext_offset + 2 + ext_len) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
+        }
+    } else {
+        ext_len = 0;
+    }
 
-            if( ext_size + 4 > ext_len )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client hello message" ) );
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                                MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
-            }
-            switch( ext_id )
-            {
+    ext = buf + ext_offset + 2;
+    MBEDTLS_SSL_DEBUG_BUF(3, "client hello extensions", ext, ext_len);
+
+    while (ext_len != 0) {
+        unsigned int ext_id;
+        unsigned int ext_size;
+        if (ext_len < 4) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
+        }
+        ext_id   = ((ext[0] <<  8) | (ext[1]));
+        ext_size = ((ext[2] <<  8) | (ext[3]));
+
+        if (ext_size + 4 > ext_len) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client hello message"));
+            mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                           MBEDTLS_SSL_ALERT_MSG_DECODE_ERROR);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
+        }
+        switch (ext_id) {
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
             case MBEDTLS_TLS_EXT_SERVERNAME:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found ServerName extension" ) );
-                if( ssl->conf->f_sni == NULL )
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found ServerName extension"));
+                if (ssl->conf->f_sni == NULL) {
                     break;
+                }
 
-                ret = ssl_parse_servername_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_servername_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
 
             case MBEDTLS_TLS_EXT_RENEGOTIATION_INFO:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found renegotiation extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found renegotiation extension"));
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
                 renegotiation_info_seen = 1;
 #endif
 
-                ret = ssl_parse_renegotiation_info( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_renegotiation_info(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2) && \
-    defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
+                defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
             case MBEDTLS_TLS_EXT_SIG_ALG:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found signature_algorithms extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found signature_algorithms extension"));
 
-                ret = ssl_parse_signature_algorithms_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_signature_algorithms_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
 
                 sig_hash_alg_ext_present = 1;
                 break;
@@ -2009,143 +1902,151 @@
           MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
 
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
-    defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
+                defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
             case MBEDTLS_TLS_EXT_SUPPORTED_ELLIPTIC_CURVES:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found supported elliptic curves extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found supported elliptic curves extension"));
 
-                ret = ssl_parse_supported_elliptic_curves( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_supported_elliptic_curves(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 
             case MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found supported point formats extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found supported point formats extension"));
                 ssl->handshake->cli_exts |= MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS_PRESENT;
 
-                ret = ssl_parse_supported_point_formats( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_supported_point_formats(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C ||
           MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
             case MBEDTLS_TLS_EXT_ECJPAKE_KKPP:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found ecjpake kkpp extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found ecjpake kkpp extension"));
 
-                ret = ssl_parse_ecjpake_kkpp( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_ecjpake_kkpp(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
             case MBEDTLS_TLS_EXT_MAX_FRAGMENT_LENGTH:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found max fragment length extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found max fragment length extension"));
 
-                ret = ssl_parse_max_fragment_length_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_max_fragment_length_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_MAX_FRAGMENT_LENGTH */
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
             case MBEDTLS_TLS_EXT_TRUNCATED_HMAC:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found truncated hmac extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found truncated hmac extension"));
 
-                ret = ssl_parse_truncated_hmac_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_truncated_hmac_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
             case MBEDTLS_TLS_EXT_CID:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found CID extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found CID extension"));
 
-                ret = ssl_parse_cid_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_cid_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
             case MBEDTLS_TLS_EXT_ENCRYPT_THEN_MAC:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found encrypt then mac extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found encrypt then mac extension"));
 
-                ret = ssl_parse_encrypt_then_mac_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_encrypt_then_mac_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */
 
 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
             case MBEDTLS_TLS_EXT_EXTENDED_MASTER_SECRET:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found extended master secret extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found extended master secret extension"));
 
-                ret = ssl_parse_extended_ms_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_extended_ms_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_EXTENDED_MASTER_SECRET */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
             case MBEDTLS_TLS_EXT_SESSION_TICKET:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found session ticket extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found session ticket extension"));
 
-                ret = ssl_parse_session_ticket_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_session_ticket_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
 #if defined(MBEDTLS_SSL_ALPN)
             case MBEDTLS_TLS_EXT_ALPN:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found alpn extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found alpn extension"));
 
-                ret = ssl_parse_alpn_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_alpn_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
             case MBEDTLS_TLS_EXT_USE_SRTP:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "found use_srtp extension" ) );
+                MBEDTLS_SSL_DEBUG_MSG(3, ("found use_srtp extension"));
 
-                ret = ssl_parse_use_srtp_ext( ssl, ext + 4, ext_size );
-                if( ret != 0 )
-                    return( ret );
+                ret = ssl_parse_use_srtp_ext(ssl, ext + 4, ext_size);
+                if (ret != 0) {
+                    return ret;
+                }
                 break;
 #endif /* MBEDTLS_SSL_DTLS_SRTP */
 
             default:
-                MBEDTLS_SSL_DEBUG_MSG( 3, ( "unknown extension found: %u (ignoring)",
-                               ext_id ) );
-            }
-
-            ext_len -= 4 + ext_size;
-            ext += 4 + ext_size;
+                MBEDTLS_SSL_DEBUG_MSG(3, ("unknown extension found: %u (ignoring)",
+                                          ext_id));
         }
-#if defined(MBEDTLS_SSL_PROTO_SSL3)
+
+        ext_len -= 4 + ext_size;
+        ext += 4 + ext_size;
     }
+#if defined(MBEDTLS_SSL_PROTO_SSL3)
+}
 #endif
 
 #if defined(MBEDTLS_SSL_FALLBACK_SCSV)
-    for( i = 0, p = buf + ciph_offset + 2; i < ciph_len; i += 2, p += 2 )
-    {
-        if( MBEDTLS_GET_UINT16_BE( p, 0 ) == MBEDTLS_SSL_FALLBACK_SCSV_VALUE )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 2, ( "received FALLBACK_SCSV" ) );
+    for (i = 0, p = buf + ciph_offset + 2; i < ciph_len; i += 2, p += 2) {
+        if (MBEDTLS_GET_UINT16_BE(p, 0) == MBEDTLS_SSL_FALLBACK_SCSV_VALUE) {
+            MBEDTLS_SSL_DEBUG_MSG(2, ("received FALLBACK_SCSV"));
 
-            if( ssl->minor_ver < ssl->conf->max_minor_ver )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "inapropriate fallback" ) );
+            if (ssl->minor_ver < ssl->conf->max_minor_ver) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("inapropriate fallback"));
 
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_INAPROPRIATE_FALLBACK );
+                mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                               MBEDTLS_SSL_ALERT_MSG_INAPROPRIATE_FALLBACK);
 
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+                return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
             }
 
             break;
@@ -2160,14 +2061,14 @@
      * Try to fall back to default hash SHA1 if the client
      * hasn't provided any preferred signature-hash combinations.
      */
-    if( sig_hash_alg_ext_present == 0 )
-    {
+    if (sig_hash_alg_ext_present == 0) {
         mbedtls_md_type_t md_default = MBEDTLS_MD_SHA1;
 
-        if( mbedtls_ssl_check_sig_hash( ssl, md_default ) != 0 )
+        if (mbedtls_ssl_check_sig_hash(ssl, md_default) != 0) {
             md_default = MBEDTLS_MD_NONE;
+        }
 
-        mbedtls_ssl_sig_hash_set_const_hash( &ssl->handshake->hash_algs, md_default );
+        mbedtls_ssl_sig_hash_set_const_hash(&ssl->handshake->hash_algs, md_default);
     }
 
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 &&
@@ -2176,19 +2077,16 @@
     /*
      * Check for TLS_EMPTY_RENEGOTIATION_INFO_SCSV
      */
-    for( i = 0, p = buf + ciph_offset + 2; i < ciph_len; i += 2, p += 2 )
-    {
-        if( p[0] == 0 && p[1] == MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "received TLS_EMPTY_RENEGOTIATION_INFO " ) );
+    for (i = 0, p = buf + ciph_offset + 2; i < ciph_len; i += 2, p += 2) {
+        if (p[0] == 0 && p[1] == MBEDTLS_SSL_EMPTY_RENEGOTIATION_INFO) {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("received TLS_EMPTY_RENEGOTIATION_INFO "));
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-            if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "received RENEGOTIATION SCSV "
-                                            "during renegotiation" ) );
-                mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                                MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-                return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+            if (ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("received RENEGOTIATION SCSV "
+                                          "during renegotiation"));
+                mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                               MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+                return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
             }
 #endif
             ssl->secure_renegotiation = MBEDTLS_SSL_SECURE_RENEGOTIATION;
@@ -2199,41 +2097,34 @@
     /*
      * Renegotiation security checks
      */
-    if( ssl->secure_renegotiation != MBEDTLS_SSL_SECURE_RENEGOTIATION &&
-        ssl->conf->allow_legacy_renegotiation == MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "legacy renegotiation, breaking off handshake" ) );
+    if (ssl->secure_renegotiation != MBEDTLS_SSL_SECURE_RENEGOTIATION &&
+        ssl->conf->allow_legacy_renegotiation == MBEDTLS_SSL_LEGACY_BREAK_HANDSHAKE) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("legacy renegotiation, breaking off handshake"));
         handshake_failure = 1;
     }
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    else if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
+    else if (ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
              ssl->secure_renegotiation == MBEDTLS_SSL_SECURE_RENEGOTIATION &&
-             renegotiation_info_seen == 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "renegotiation_info extension missing (secure)" ) );
+             renegotiation_info_seen == 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("renegotiation_info extension missing (secure)"));
         handshake_failure = 1;
-    }
-    else if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
-             ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION &&
-             ssl->conf->allow_legacy_renegotiation == MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "legacy renegotiation not allowed" ) );
+    } else if (ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
+               ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION &&
+               ssl->conf->allow_legacy_renegotiation == MBEDTLS_SSL_LEGACY_NO_RENEGOTIATION) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("legacy renegotiation not allowed"));
         handshake_failure = 1;
-    }
-    else if( ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
-             ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION &&
-             renegotiation_info_seen == 1 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "renegotiation_info extension present (legacy)" ) );
+    } else if (ssl->renego_status == MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS &&
+               ssl->secure_renegotiation == MBEDTLS_SSL_LEGACY_RENEGOTIATION &&
+               renegotiation_info_seen == 1) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("renegotiation_info extension present (legacy)"));
         handshake_failure = 1;
     }
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
 
-    if( handshake_failure == 1 )
-    {
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO );
+    if (handshake_failure == 1) {
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_HELLO;
     }
 
     /*
@@ -2245,57 +2136,60 @@
     ciphersuites = ssl->conf->ciphersuite_list[ssl->minor_ver];
     ciphersuite_info = NULL;
 #if defined(MBEDTLS_SSL_SRV_RESPECT_CLIENT_PREFERENCE)
-    for( j = 0, p = buf + ciph_offset + 2; j < ciph_len; j += 2, p += 2 )
-        for( i = 0; ciphersuites[i] != 0; i++ )
-        {
-            if( MBEDTLS_GET_UINT16_BE(p, 0) != ciphersuites[i] )
+    for (j = 0, p = buf + ciph_offset + 2; j < ciph_len; j += 2, p += 2) {
+        for (i = 0; ciphersuites[i] != 0; i++) {
+            if (MBEDTLS_GET_UINT16_BE(p, 0) != ciphersuites[i]) {
                 continue;
+            }
 
             got_common_suite = 1;
 
-            if( ( ret = ssl_ciphersuite_match( ssl, ciphersuites[i],
-                                               &ciphersuite_info ) ) != 0 )
-                return( ret );
+            if ((ret = ssl_ciphersuite_match(ssl, ciphersuites[i],
+                                             &ciphersuite_info)) != 0) {
+                return ret;
+            }
 
-            if( ciphersuite_info != NULL )
+            if (ciphersuite_info != NULL) {
                 goto have_ciphersuite;
+            }
         }
+    }
 #else
-    for( i = 0; ciphersuites[i] != 0; i++ )
-        for( j = 0, p = buf + ciph_offset + 2; j < ciph_len; j += 2, p += 2 )
-        {
-            if( MBEDTLS_GET_UINT16_BE(p, 0) != ciphersuites[i] )
+    for (i = 0; ciphersuites[i] != 0; i++) {
+        for (j = 0, p = buf + ciph_offset + 2; j < ciph_len; j += 2, p += 2) {
+            if (MBEDTLS_GET_UINT16_BE(p, 0) != ciphersuites[i]) {
                 continue;
+            }
 
             got_common_suite = 1;
 
-            if( ( ret = ssl_ciphersuite_match( ssl, ciphersuites[i],
-                                               &ciphersuite_info ) ) != 0 )
-                return( ret );
+            if ((ret = ssl_ciphersuite_match(ssl, ciphersuites[i],
+                                             &ciphersuite_info)) != 0) {
+                return ret;
+            }
 
-            if( ciphersuite_info != NULL )
+            if (ciphersuite_info != NULL) {
                 goto have_ciphersuite;
+            }
         }
+    }
 #endif
 
-    if( got_common_suite )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "got ciphersuites in common, "
-                            "but none of them usable" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE );
-    }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no ciphersuites in common" ) );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE );
-        return( MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN );
+    if (got_common_suite) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("got ciphersuites in common, "
+                                  "but none of them usable"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_NO_USABLE_CIPHERSUITE;
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("got no ciphersuites in common"));
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_HANDSHAKE_FAILURE);
+        return MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN;
     }
 
 have_ciphersuite:
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "selected ciphersuite: %s", ciphersuite_info->name ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("selected ciphersuite: %s", ciphersuite_info->name));
 
     ssl->session_negotiate->ciphersuite = ciphersuites[i];
     ssl->handshake->ciphersuite_info = ciphersuite_info;
@@ -2303,53 +2197,49 @@
     ssl->state++;
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-        mbedtls_ssl_recv_flight_completed( ssl );
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
+        mbedtls_ssl_recv_flight_completed(ssl);
+    }
 #endif
 
     /* Debugging-only output for testsuite */
 #if defined(MBEDTLS_DEBUG_C)                         && \
     defined(MBEDTLS_SSL_PROTO_TLS1_2)                && \
     defined(MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED)
-    if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
-    {
-        mbedtls_pk_type_t sig_alg = mbedtls_ssl_get_ciphersuite_sig_alg( ciphersuite_info );
-        if( sig_alg != MBEDTLS_PK_NONE )
-        {
-            mbedtls_md_type_t md_alg = mbedtls_ssl_sig_hash_set_find( &ssl->handshake->hash_algs,
-                                                                  sig_alg );
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "client hello v3, signature_algorithm ext: %d",
-                                        mbedtls_ssl_hash_from_md_alg( md_alg ) ) );
-        }
-        else
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "no hash algorithm for signature algorithm "
-                                        "%u - should not happen", (unsigned) sig_alg ) );
+    if (ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3) {
+        mbedtls_pk_type_t sig_alg = mbedtls_ssl_get_ciphersuite_sig_alg(ciphersuite_info);
+        if (sig_alg != MBEDTLS_PK_NONE) {
+            mbedtls_md_type_t md_alg = mbedtls_ssl_sig_hash_set_find(&ssl->handshake->hash_algs,
+                                                                     sig_alg);
+            MBEDTLS_SSL_DEBUG_MSG(3, ("client hello v3, signature_algorithm ext: %d",
+                                      mbedtls_ssl_hash_from_md_alg(md_alg)));
+        } else {
+            MBEDTLS_SSL_DEBUG_MSG(3, ("no hash algorithm for signature algorithm "
+                                      "%u - should not happen", (unsigned) sig_alg));
         }
     }
 #endif
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse client hello" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse client hello"));
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-static void ssl_write_truncated_hmac_ext( mbedtls_ssl_context *ssl,
-                                          unsigned char *buf,
-                                          size_t *olen )
+static void ssl_write_truncated_hmac_ext(mbedtls_ssl_context *ssl,
+                                         unsigned char *buf,
+                                         size_t *olen)
 {
     unsigned char *p = buf;
 
-    if( ssl->session_negotiate->trunc_hmac == MBEDTLS_SSL_TRUNC_HMAC_DISABLED )
-    {
+    if (ssl->session_negotiate->trunc_hmac == MBEDTLS_SSL_TRUNC_HMAC_DISABLED) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding truncated hmac extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, adding truncated hmac extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_TRUNCATED_HMAC, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_TRUNCATED_HMAC, p, 0);
     p += 2;
 
     *p++ = 0x00;
@@ -2360,9 +2250,9 @@
 #endif /* MBEDTLS_SSL_TRUNCATED_HMAC */
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-static void ssl_write_cid_ext( mbedtls_ssl_context *ssl,
-                               unsigned char *buf,
-                               size_t *olen )
+static void ssl_write_cid_ext(mbedtls_ssl_context *ssl,
+                              unsigned char *buf,
+                              size_t *olen)
 {
     unsigned char *p = buf;
     size_t ext_len;
@@ -2372,18 +2262,18 @@
 
     /* Skip writing the extension if we don't want to use it or if
      * the client hasn't offered it. */
-    if( ssl->handshake->cid_in_use == MBEDTLS_SSL_CID_DISABLED )
-        return;
-
-    /* ssl->own_cid_len is at most MBEDTLS_SSL_CID_IN_LEN_MAX
-     * which is at most 255, so the increment cannot overflow. */
-    if( end < p || (size_t)( end - p ) < (unsigned)( ssl->own_cid_len + 5 ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "buffer too small" ) );
+    if (ssl->handshake->cid_in_use == MBEDTLS_SSL_CID_DISABLED) {
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding CID extension" ) );
+    /* ssl->own_cid_len is at most MBEDTLS_SSL_CID_IN_LEN_MAX
+     * which is at most 255, so the increment cannot overflow. */
+    if (end < p || (size_t) (end - p) < (unsigned) (ssl->own_cid_len + 5)) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("buffer too small"));
+        return;
+    }
+
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, adding CID extension"));
 
     /*
      * Quoting draft-ietf-tls-dtls-connection-id-05
@@ -2392,31 +2282,32 @@
      *   struct {
      *      opaque cid<0..2^8-1>;
      *   } ConnectionId;
-    */
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_CID, p, 0 );
+     */
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_CID, p, 0);
     p += 2;
     ext_len = (size_t) ssl->own_cid_len + 1;
-    MBEDTLS_PUT_UINT16_BE( ext_len, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(ext_len, p, 0);
     p += 2;
 
     *p++ = (uint8_t) ssl->own_cid_len;
-    memcpy( p, ssl->own_cid, ssl->own_cid_len );
+    memcpy(p, ssl->own_cid, ssl->own_cid_len);
 
     *olen = ssl->own_cid_len + 5;
 }
 #endif /* MBEDTLS_SSL_DTLS_CONNECTION_ID */
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-static void ssl_write_encrypt_then_mac_ext( mbedtls_ssl_context *ssl,
-                                            unsigned char *buf,
-                                            size_t *olen )
+static void ssl_write_encrypt_then_mac_ext(mbedtls_ssl_context *ssl,
+                                           unsigned char *buf,
+                                           size_t *olen)
 {
     unsigned char *p = buf;
     const mbedtls_ssl_ciphersuite_t *suite = NULL;
     const mbedtls_cipher_info_t *cipher = NULL;
 
-    if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
+    if (ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0) {
         ssl->session_negotiate->encrypt_then_mac = MBEDTLS_SSL_ETM_DISABLED;
+    }
 
     /*
      * RFC 7366: "If a server receives an encrypt-then-MAC request extension
@@ -2424,23 +2315,21 @@
      * with Associated Data (AEAD) ciphersuite, it MUST NOT send an
      * encrypt-then-MAC response extension back to the client."
      */
-    if( ( suite = mbedtls_ssl_ciphersuite_from_id(
-                    ssl->session_negotiate->ciphersuite ) ) == NULL ||
-        ( cipher = mbedtls_cipher_info_from_type( suite->cipher ) ) == NULL ||
-        cipher->mode != MBEDTLS_MODE_CBC )
-    {
+    if ((suite = mbedtls_ssl_ciphersuite_from_id(
+             ssl->session_negotiate->ciphersuite)) == NULL ||
+        (cipher = mbedtls_cipher_info_from_type(suite->cipher)) == NULL ||
+        cipher->mode != MBEDTLS_MODE_CBC) {
         ssl->session_negotiate->encrypt_then_mac = MBEDTLS_SSL_ETM_DISABLED;
     }
 
-    if( ssl->session_negotiate->encrypt_then_mac == MBEDTLS_SSL_ETM_DISABLED )
-    {
+    if (ssl->session_negotiate->encrypt_then_mac == MBEDTLS_SSL_ETM_DISABLED) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding encrypt then mac extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, adding encrypt then mac extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_ENCRYPT_THEN_MAC, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_ENCRYPT_THEN_MAC, p, 0);
     p += 2;
 
     *p++ = 0x00;
@@ -2451,23 +2340,22 @@
 #endif /* MBEDTLS_SSL_ENCRYPT_THEN_MAC */
 
 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-static void ssl_write_extended_ms_ext( mbedtls_ssl_context *ssl,
-                                       unsigned char *buf,
-                                       size_t *olen )
+static void ssl_write_extended_ms_ext(mbedtls_ssl_context *ssl,
+                                      unsigned char *buf,
+                                      size_t *olen)
 {
     unsigned char *p = buf;
 
-    if( ssl->handshake->extended_ms == MBEDTLS_SSL_EXTENDED_MS_DISABLED ||
-        ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0 )
-    {
+    if (ssl->handshake->extended_ms == MBEDTLS_SSL_EXTENDED_MS_DISABLED ||
+        ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_0) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding extended master secret "
-                        "extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, adding extended master secret "
+                              "extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_EXTENDED_MASTER_SECRET, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_EXTENDED_MASTER_SECRET, p, 0);
     p += 2;
 
     *p++ = 0x00;
@@ -2478,21 +2366,20 @@
 #endif /* MBEDTLS_SSL_EXTENDED_MASTER_SECRET */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-static void ssl_write_session_ticket_ext( mbedtls_ssl_context *ssl,
-                                          unsigned char *buf,
-                                          size_t *olen )
+static void ssl_write_session_ticket_ext(mbedtls_ssl_context *ssl,
+                                         unsigned char *buf,
+                                         size_t *olen)
 {
     unsigned char *p = buf;
 
-    if( ssl->handshake->new_session_ticket == 0 )
-    {
+    if (ssl->handshake->new_session_ticket == 0) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding session ticket extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, adding session ticket extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_SESSION_TICKET, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_SESSION_TICKET, p, 0);
     p += 2;
 
     *p++ = 0x00;
@@ -2502,36 +2389,33 @@
 }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
-static void ssl_write_renegotiation_ext( mbedtls_ssl_context *ssl,
-                                         unsigned char *buf,
-                                         size_t *olen )
+static void ssl_write_renegotiation_ext(mbedtls_ssl_context *ssl,
+                                        unsigned char *buf,
+                                        size_t *olen)
 {
     unsigned char *p = buf;
 
-    if( ssl->secure_renegotiation != MBEDTLS_SSL_SECURE_RENEGOTIATION )
-    {
+    if (ssl->secure_renegotiation != MBEDTLS_SSL_SECURE_RENEGOTIATION) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, secure renegotiation extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, secure renegotiation extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_RENEGOTIATION_INFO, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_RENEGOTIATION_INFO, p, 0);
     p += 2;
 
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE )
-    {
+    if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
         *p++ = 0x00;
-        *p++ = ( ssl->verify_data_len * 2 + 1 ) & 0xFF;
+        *p++ = (ssl->verify_data_len * 2 + 1) & 0xFF;
         *p++ = ssl->verify_data_len * 2 & 0xFF;
 
-        memcpy( p, ssl->peer_verify_data, ssl->verify_data_len );
+        memcpy(p, ssl->peer_verify_data, ssl->verify_data_len);
         p += ssl->verify_data_len;
-        memcpy( p, ssl->own_verify_data, ssl->verify_data_len );
+        memcpy(p, ssl->own_verify_data, ssl->verify_data_len);
         p += ssl->verify_data_len;
-    }
-    else
+    } else
 #endif /* MBEDTLS_SSL_RENEGOTIATION */
     {
         *p++ = 0x00;
@@ -2543,21 +2427,20 @@
 }
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-static void ssl_write_max_fragment_length_ext( mbedtls_ssl_context *ssl,
-                                               unsigned char *buf,
-                                               size_t *olen )
+static void ssl_write_max_fragment_length_ext(mbedtls_ssl_context *ssl,
+                                              unsigned char *buf,
+                                              size_t *olen)
 {
     unsigned char *p = buf;
 
-    if( ssl->session_negotiate->mfl_code == MBEDTLS_SSL_MAX_FRAG_LEN_NONE )
-    {
+    if (ssl->session_negotiate->mfl_code == MBEDTLS_SSL_MAX_FRAG_LEN_NONE) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, max_fragment_length extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, max_fragment_length extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_MAX_FRAGMENT_LENGTH, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_MAX_FRAGMENT_LENGTH, p, 0);
     p += 2;
 
     *p++ = 0x00;
@@ -2571,23 +2454,22 @@
 
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-static void ssl_write_supported_point_formats_ext( mbedtls_ssl_context *ssl,
-                                                   unsigned char *buf,
-                                                   size_t *olen )
+static void ssl_write_supported_point_formats_ext(mbedtls_ssl_context *ssl,
+                                                  unsigned char *buf,
+                                                  size_t *olen)
 {
     unsigned char *p = buf;
     ((void) ssl);
 
-    if( ( ssl->handshake->cli_exts &
-          MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS_PRESENT ) == 0 )
-    {
+    if ((ssl->handshake->cli_exts &
+         MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS_PRESENT) == 0) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, supported_point_formats extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, supported_point_formats extension"));
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_SUPPORTED_POINT_FORMATS, p, 0);
     p += 2;
 
     *p++ = 0x00;
@@ -2601,9 +2483,9 @@
 #endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C || MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-static void ssl_write_ecjpake_kkpp_ext( mbedtls_ssl_context *ssl,
-                                        unsigned char *buf,
-                                        size_t *olen )
+static void ssl_write_ecjpake_kkpp_ext(mbedtls_ssl_context *ssl,
+                                       unsigned char *buf,
+                                       size_t *olen)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *p = buf;
@@ -2613,48 +2495,46 @@
     *olen = 0;
 
     /* Skip costly computation if not needed */
-    if( ssl->handshake->ciphersuite_info->key_exchange !=
-        MBEDTLS_KEY_EXCHANGE_ECJPAKE )
-        return;
-
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, ecjpake kkpp extension" ) );
-
-    if( end - p < 4 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "buffer too small" ) );
+    if (ssl->handshake->ciphersuite_info->key_exchange !=
+        MBEDTLS_KEY_EXCHANGE_ECJPAKE) {
         return;
     }
 
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_ECJPAKE_KKPP, p, 0 );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, ecjpake kkpp extension"));
+
+    if (end - p < 4) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("buffer too small"));
+        return;
+    }
+
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_ECJPAKE_KKPP, p, 0);
     p += 2;
 
-    ret = mbedtls_ecjpake_write_round_one( &ssl->handshake->ecjpake_ctx,
-                                        p + 2, end - p - 2, &kkpp_len,
-                                        ssl->conf->f_rng, ssl->conf->p_rng );
-    if( ret != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1 , "mbedtls_ecjpake_write_round_one", ret );
+    ret = mbedtls_ecjpake_write_round_one(&ssl->handshake->ecjpake_ctx,
+                                          p + 2, end - p - 2, &kkpp_len,
+                                          ssl->conf->f_rng, ssl->conf->p_rng);
+    if (ret != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecjpake_write_round_one", ret);
         return;
     }
 
-    MBEDTLS_PUT_UINT16_BE( kkpp_len, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(kkpp_len, p, 0);
     p += 2;
 
     *olen = kkpp_len + 4;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
 
-#if defined(MBEDTLS_SSL_ALPN )
-static void ssl_write_alpn_ext( mbedtls_ssl_context *ssl,
-                                unsigned char *buf, size_t *olen )
+#if defined(MBEDTLS_SSL_ALPN)
+static void ssl_write_alpn_ext(mbedtls_ssl_context *ssl,
+                               unsigned char *buf, size_t *olen)
 {
-    if( ssl->alpn_chosen == NULL )
-    {
+    if (ssl->alpn_chosen == NULL) {
         *olen = 0;
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding alpn extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, adding alpn extension"));
 
     /*
      * 0 . 1    ext identifier
@@ -2663,24 +2543,24 @@
      * 6 . 6    protocol name length
      * 7 . 7+n  protocol name
      */
-    MBEDTLS_PUT_UINT16_BE( MBEDTLS_TLS_EXT_ALPN, buf, 0);
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_ALPN, buf, 0);
 
-    *olen = 7 + strlen( ssl->alpn_chosen );
+    *olen = 7 + strlen(ssl->alpn_chosen);
 
-    MBEDTLS_PUT_UINT16_BE( *olen - 4, buf, 2 );
+    MBEDTLS_PUT_UINT16_BE(*olen - 4, buf, 2);
 
-    MBEDTLS_PUT_UINT16_BE( *olen - 6, buf, 4 );
+    MBEDTLS_PUT_UINT16_BE(*olen - 6, buf, 4);
 
-    buf[6] = MBEDTLS_BYTE_0( *olen - 7 );
+    buf[6] = MBEDTLS_BYTE_0(*olen - 7);
 
-    memcpy( buf + 7, ssl->alpn_chosen, *olen - 7 );
+    memcpy(buf + 7, ssl->alpn_chosen, *olen - 7);
 }
 #endif /* MBEDTLS_ECDH_C || MBEDTLS_ECDSA_C */
 
-#if defined(MBEDTLS_SSL_DTLS_SRTP ) && defined(MBEDTLS_SSL_PROTO_DTLS)
-static void ssl_write_use_srtp_ext( mbedtls_ssl_context *ssl,
-                                    unsigned char *buf,
-                                    size_t *olen )
+#if defined(MBEDTLS_SSL_DTLS_SRTP) && defined(MBEDTLS_SSL_PROTO_DTLS)
+static void ssl_write_use_srtp_ext(mbedtls_ssl_context *ssl,
+                                   unsigned char *buf,
+                                   size_t *olen)
 {
     size_t mki_len = 0, ext_len = 0;
     uint16_t profile_value = 0;
@@ -2688,16 +2568,14 @@
 
     *olen = 0;
 
-    if( ( ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM ) ||
-        ( ssl->dtls_srtp_info.chosen_dtls_srtp_profile == MBEDTLS_TLS_SRTP_UNSET ) )
-    {
+    if ((ssl->conf->transport != MBEDTLS_SSL_TRANSPORT_DATAGRAM) ||
+        (ssl->dtls_srtp_info.chosen_dtls_srtp_profile == MBEDTLS_TLS_SRTP_UNSET)) {
         return;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, adding use_srtp extension" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, adding use_srtp extension"));
 
-    if( ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED )
-    {
+    if (ssl->conf->dtls_srtp_mki_support == MBEDTLS_SSL_DTLS_SRTP_MKI_SUPPORTED) {
         mki_len = ssl->dtls_srtp_info.mki_len;
     }
 
@@ -2709,38 +2587,34 @@
      * - 1 byte for the mki length
      * +  the actual mki length
      * Check we have enough room in the output buffer */
-    if( (size_t)( end - buf ) < mki_len + 9 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "buffer too small" ) );
+    if ((size_t) (end - buf) < mki_len + 9) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("buffer too small"));
         return;
     }
 
     /* extension */
-    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_USE_SRTP, buf, 0 );
+    MBEDTLS_PUT_UINT16_BE(MBEDTLS_TLS_EXT_USE_SRTP, buf, 0);
     /*
      * total length 5 and mki value: only one profile(2 bytes)
      *              and length(2 bytes) and srtp_mki  )
      */
     ext_len = 5 + mki_len;
-    MBEDTLS_PUT_UINT16_BE( ext_len, buf, 2 );
+    MBEDTLS_PUT_UINT16_BE(ext_len, buf, 2);
 
     /* protection profile length: 2 */
     buf[4] = 0x00;
     buf[5] = 0x02;
     profile_value = mbedtls_ssl_check_srtp_profile_value(
-                                ssl->dtls_srtp_info.chosen_dtls_srtp_profile );
-    if( profile_value != MBEDTLS_TLS_SRTP_UNSET )
-    {
-        MBEDTLS_PUT_UINT16_BE( profile_value, buf, 6 );
-    }
-    else
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "use_srtp extension invalid profile" ) );
+        ssl->dtls_srtp_info.chosen_dtls_srtp_profile);
+    if (profile_value != MBEDTLS_TLS_SRTP_UNSET) {
+        MBEDTLS_PUT_UINT16_BE(profile_value, buf, 6);
+    } else {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("use_srtp extension invalid profile"));
         return;
     }
 
     buf[8] = mki_len & 0xFF;
-    memcpy( &buf[9], ssl->dtls_srtp_info.mki_value, mki_len );
+    memcpy(&buf[9], ssl->dtls_srtp_info.mki_value, mki_len);
 
     *olen = 9 + mki_len;
 }
@@ -2748,13 +2622,13 @@
 
 #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_write_hello_verify_request( mbedtls_ssl_context *ssl )
+static int ssl_write_hello_verify_request(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *p = ssl->out_msg + 4;
     unsigned char *cookie_len_byte;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write hello verify request" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> write hello verify request"));
 
     /*
      * struct {
@@ -2765,32 +2639,30 @@
 
     /* The RFC is not clear on this point, but sending the actual negotiated
      * version looks like the most interoperable thing to do. */
-    mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver,
-                       ssl->conf->transport, p );
-    MBEDTLS_SSL_DEBUG_BUF( 3, "server version", p, 2 );
+    mbedtls_ssl_write_version(ssl->major_ver, ssl->minor_ver,
+                              ssl->conf->transport, p);
+    MBEDTLS_SSL_DEBUG_BUF(3, "server version", p, 2);
     p += 2;
 
     /* If we get here, f_cookie_check is not null */
-    if( ssl->conf->f_cookie_write == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "inconsistent cookie callbacks" ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    if (ssl->conf->f_cookie_write == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("inconsistent cookie callbacks"));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
     /* Skip length byte until we know the length */
     cookie_len_byte = p++;
 
-    if( ( ret = ssl->conf->f_cookie_write( ssl->conf->p_cookie,
-                                     &p, ssl->out_buf + MBEDTLS_SSL_OUT_BUFFER_LEN,
-                                     ssl->cli_id, ssl->cli_id_len ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "f_cookie_write", ret );
-        return( ret );
+    if ((ret = ssl->conf->f_cookie_write(ssl->conf->p_cookie,
+                                         &p, ssl->out_buf + MBEDTLS_SSL_OUT_BUFFER_LEN,
+                                         ssl->cli_id, ssl->cli_id_len)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "f_cookie_write", ret);
+        return ret;
     }
 
-    *cookie_len_byte = (unsigned char)( p - ( cookie_len_byte + 1 ) );
+    *cookie_len_byte = (unsigned char) (p - (cookie_len_byte + 1));
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "cookie sent", cookie_len_byte + 1, *cookie_len_byte );
+    MBEDTLS_SSL_DEBUG_BUF(3, "cookie sent", cookie_len_byte + 1, *cookie_len_byte);
 
     ssl->out_msglen  = p - ssl->out_msg;
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
@@ -2798,28 +2670,26 @@
 
     ssl->state = MBEDTLS_SSL_SERVER_HELLO_VERIFY_REQUEST_SENT;
 
-    if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
+        return ret;
     }
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
-        ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret );
-        return( ret );
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
+        (ret = mbedtls_ssl_flight_transmit(ssl)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_flight_transmit", ret);
+        return ret;
     }
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write hello verify request" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= write hello verify request"));
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */
 
-static void ssl_handle_id_based_session_resumption( mbedtls_ssl_context *ssl )
+static void ssl_handle_id_based_session_resumption(mbedtls_ssl_context *ssl)
 {
     int ret;
     mbedtls_ssl_session session_tmp;
@@ -2827,49 +2697,53 @@
 
     /* Resume is 0  by default, see ssl_handshake_init().
      * It may be already set to 1 by ssl_parse_session_ticket_ext(). */
-    if( ssl->handshake->resume == 1 )
+    if (ssl->handshake->resume == 1) {
         return;
-    if( session->id_len == 0 )
+    }
+    if (session->id_len == 0) {
         return;
-    if( ssl->conf->f_get_cache == NULL )
+    }
+    if (ssl->conf->f_get_cache == NULL) {
         return;
+    }
 #if defined(MBEDTLS_SSL_RENEGOTIATION)
-    if( ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE )
+    if (ssl->renego_status != MBEDTLS_SSL_INITIAL_HANDSHAKE) {
         return;
+    }
 #endif
 
-    mbedtls_ssl_session_init( &session_tmp );
+    mbedtls_ssl_session_init(&session_tmp);
 
     session_tmp.id_len = session->id_len;
-    memcpy( session_tmp.id, session->id, session->id_len );
+    memcpy(session_tmp.id, session->id, session->id_len);
 
-    ret = ssl->conf->f_get_cache( ssl->conf->p_cache,
-                                  &session_tmp );
-    if( ret != 0 )
+    ret = ssl->conf->f_get_cache(ssl->conf->p_cache,
+                                 &session_tmp);
+    if (ret != 0) {
         goto exit;
+    }
 
-    if( session->ciphersuite != session_tmp.ciphersuite ||
-        session->compression != session_tmp.compression )
-    {
+    if (session->ciphersuite != session_tmp.ciphersuite ||
+        session->compression != session_tmp.compression) {
         /* Mismatch between cached and negotiated session */
         goto exit;
     }
 
     /* Move semantics */
-    mbedtls_ssl_session_free( session );
+    mbedtls_ssl_session_free(session);
     *session = session_tmp;
-    memset( &session_tmp, 0, sizeof( session_tmp ) );
+    memset(&session_tmp, 0, sizeof(session_tmp));
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "session successfully restored from cache" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("session successfully restored from cache"));
     ssl->handshake->resume = 1;
 
 exit:
 
-    mbedtls_ssl_session_free( &session_tmp );
+    mbedtls_ssl_session_free(&session_tmp);
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_write_server_hello( mbedtls_ssl_context *ssl )
+static int ssl_write_server_hello(mbedtls_ssl_context *ssl)
 {
 #if defined(MBEDTLS_HAVE_TIME)
     mbedtls_time_t t;
@@ -2878,23 +2752,21 @@
     size_t olen, ext_len = 0, n;
     unsigned char *buf, *p;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write server hello" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> write server hello"));
 
 #if defined(MBEDTLS_SSL_DTLS_HELLO_VERIFY)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
-        ssl->handshake->verify_cookie_len != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "client hello was not authenticated" ) );
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server hello" ) );
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
+        ssl->handshake->verify_cookie_len != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("client hello was not authenticated"));
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= write server hello"));
 
-        return( ssl_write_hello_verify_request( ssl ) );
+        return ssl_write_hello_verify_request(ssl);
     }
 #endif /* MBEDTLS_SSL_DTLS_HELLO_VERIFY */
 
-    if( ssl->conf->f_rng == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "no RNG provided") );
-        return( MBEDTLS_ERR_SSL_NO_RNG );
+    if (ssl->conf->f_rng == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("no RNG provided"));
+        return MBEDTLS_ERR_SSL_NO_RNG;
     }
 
     /*
@@ -2907,40 +2779,41 @@
     buf = ssl->out_msg;
     p = buf + 4;
 
-    mbedtls_ssl_write_version( ssl->major_ver, ssl->minor_ver,
-                       ssl->conf->transport, p );
+    mbedtls_ssl_write_version(ssl->major_ver, ssl->minor_ver,
+                              ssl->conf->transport, p);
     p += 2;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, chosen version: [%d:%d]",
-                        buf[4], buf[5] ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, chosen version: [%d:%d]",
+                              buf[4], buf[5]));
 
 #if defined(MBEDTLS_HAVE_TIME)
-    t = mbedtls_time( NULL );
-    MBEDTLS_PUT_UINT32_BE( t, p, 0 );
+    t = mbedtls_time(NULL);
+    MBEDTLS_PUT_UINT32_BE(t, p, 0);
     p += 4;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, current time: %" MBEDTLS_PRINTF_LONGLONG,
-                                (long long) t ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, current time: %" MBEDTLS_PRINTF_LONGLONG,
+                              (long long) t));
 #else
-    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p, 4 ) ) != 0 )
-        return( ret );
+    if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, p, 4)) != 0) {
+        return ret;
+    }
 
     p += 4;
 #endif /* MBEDTLS_HAVE_TIME */
 
-    if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, p, 28 ) ) != 0 )
-        return( ret );
+    if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, p, 28)) != 0) {
+        return ret;
+    }
 
     p += 28;
 
-    memcpy( ssl->handshake->randbytes + 32, buf + 6, 32 );
+    memcpy(ssl->handshake->randbytes + 32, buf + 6, 32);
 
-    MBEDTLS_SSL_DEBUG_BUF( 3, "server hello, random bytes", buf + 6, 32 );
+    MBEDTLS_SSL_DEBUG_BUF(3, "server hello, random bytes", buf + 6, 32);
 
-    ssl_handle_id_based_session_resumption( ssl );
+    ssl_handle_id_based_session_resumption(ssl);
 
-    if( ssl->handshake->resume == 0 )
-    {
+    if (ssl->handshake->resume == 0) {
         /*
          * New session, create a new session id,
          * unless we're about to issue a session ticket
@@ -2948,36 +2821,32 @@
         ssl->state++;
 
 #if defined(MBEDTLS_HAVE_TIME)
-        ssl->session_negotiate->start = mbedtls_time( NULL );
+        ssl->session_negotiate->start = mbedtls_time(NULL);
 #endif
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-        if( ssl->handshake->new_session_ticket != 0 )
-        {
+        if (ssl->handshake->new_session_ticket != 0) {
             ssl->session_negotiate->id_len = n = 0;
-            memset( ssl->session_negotiate->id, 0, 32 );
-        }
-        else
+            memset(ssl->session_negotiate->id, 0, 32);
+        } else
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
         {
             ssl->session_negotiate->id_len = n = 32;
-            if( ( ret = ssl->conf->f_rng( ssl->conf->p_rng, ssl->session_negotiate->id,
-                                    n ) ) != 0 )
-                return( ret );
+            if ((ret = ssl->conf->f_rng(ssl->conf->p_rng, ssl->session_negotiate->id,
+                                        n)) != 0) {
+                return ret;
+            }
         }
-    }
-    else
-    {
+    } else {
         /*
          * Resuming a session
          */
         n = ssl->session_negotiate->id_len;
         ssl->state = MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC;
 
-        if( ( ret = mbedtls_ssl_derive_keys( ssl ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_derive_keys", ret );
-            return( ret );
+        if ((ret = mbedtls_ssl_derive_keys(ssl)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_derive_keys", ret);
+            return ret;
         }
     }
 
@@ -2990,136 +2859,132 @@
      *   44+n . 43+n+m  extensions
      */
     *p++ = (unsigned char) ssl->session_negotiate->id_len;
-    memcpy( p, ssl->session_negotiate->id, ssl->session_negotiate->id_len );
+    memcpy(p, ssl->session_negotiate->id, ssl->session_negotiate->id_len);
     p += ssl->session_negotiate->id_len;
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, session id len.: %" MBEDTLS_PRINTF_SIZET, n ) );
-    MBEDTLS_SSL_DEBUG_BUF( 3,   "server hello, session id", buf + 39, n );
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "%s session has been resumed",
-                   ssl->handshake->resume ? "a" : "no" ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, session id len.: %" MBEDTLS_PRINTF_SIZET, n));
+    MBEDTLS_SSL_DEBUG_BUF(3,   "server hello, session id", buf + 39, n);
+    MBEDTLS_SSL_DEBUG_MSG(3, ("%s session has been resumed",
+                              ssl->handshake->resume ? "a" : "no"));
 
-    MBEDTLS_PUT_UINT16_BE( ssl->session_negotiate->ciphersuite, p, 0 );
+    MBEDTLS_PUT_UINT16_BE(ssl->session_negotiate->ciphersuite, p, 0);
     p += 2;
-    *p++ = MBEDTLS_BYTE_0( ssl->session_negotiate->compression );
+    *p++ = MBEDTLS_BYTE_0(ssl->session_negotiate->compression);
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, chosen ciphersuite: %s",
-           mbedtls_ssl_get_ciphersuite_name( ssl->session_negotiate->ciphersuite ) ) );
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, compress alg.: 0x%02X",
-                   (unsigned int) ssl->session_negotiate->compression ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, chosen ciphersuite: %s",
+                              mbedtls_ssl_get_ciphersuite_name(ssl->session_negotiate->ciphersuite)));
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, compress alg.: 0x%02X",
+                              (unsigned int) ssl->session_negotiate->compression));
 
     /* Do not write the extensions if the protocol is SSLv3 */
 #if defined(MBEDTLS_SSL_PROTO_SSL3)
-    if( ( ssl->major_ver != 3 ) || ( ssl->minor_ver != 0 ) )
-    {
+    if ((ssl->major_ver != 3) || (ssl->minor_ver != 0)) {
 #endif
 
     /*
      *  First write extensions, then the total length
      */
-    ssl_write_renegotiation_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_renegotiation_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 
 #if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
-    ssl_write_max_fragment_length_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_max_fragment_length_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_TRUNCATED_HMAC)
-    ssl_write_truncated_hmac_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_truncated_hmac_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_CONNECTION_ID)
-    ssl_write_cid_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_cid_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
-    ssl_write_encrypt_then_mac_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_encrypt_then_mac_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_EXTENDED_MASTER_SECRET)
-    ssl_write_extended_ms_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_extended_ms_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-    ssl_write_session_ticket_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_session_ticket_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_ECDH_C) || defined(MBEDTLS_ECDSA_C) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    if ( mbedtls_ssl_ciphersuite_uses_ec(
-         mbedtls_ssl_ciphersuite_from_id( ssl->session_negotiate->ciphersuite ) ) )
-    {
-        ssl_write_supported_point_formats_ext( ssl, p + 2 + ext_len, &olen );
+    if (mbedtls_ssl_ciphersuite_uses_ec(
+            mbedtls_ssl_ciphersuite_from_id(ssl->session_negotiate->ciphersuite))) {
+        ssl_write_supported_point_formats_ext(ssl, p + 2 + ext_len, &olen);
         ext_len += olen;
     }
 #endif
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    ssl_write_ecjpake_kkpp_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_ecjpake_kkpp_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_ALPN)
-    ssl_write_alpn_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_alpn_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
 #if defined(MBEDTLS_SSL_DTLS_SRTP)
-    ssl_write_use_srtp_ext( ssl, p + 2 + ext_len, &olen );
+    ssl_write_use_srtp_ext(ssl, p + 2 + ext_len, &olen);
     ext_len += olen;
 #endif
 
-    MBEDTLS_SSL_DEBUG_MSG( 3, ( "server hello, total extension length: %" MBEDTLS_PRINTF_SIZET,
-                                ext_len ) );
+    MBEDTLS_SSL_DEBUG_MSG(3, ("server hello, total extension length: %" MBEDTLS_PRINTF_SIZET,
+                              ext_len));
 
-    if( ext_len > 0 )
-    {
-        MBEDTLS_PUT_UINT16_BE( ext_len, p, 0 );
+    if (ext_len > 0) {
+        MBEDTLS_PUT_UINT16_BE(ext_len, p, 0);
         p += 2 + ext_len;
     }
 
 #if defined(MBEDTLS_SSL_PROTO_SSL3)
-    }
+}
 #endif
 
     ssl->out_msglen  = p - buf;
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_SERVER_HELLO;
 
-    ret = mbedtls_ssl_write_handshake_msg( ssl );
+    ret = mbedtls_ssl_write_handshake_msg(ssl);
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server hello" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= write server hello"));
 
-    return( ret );
+    return ret;
 }
 
 #if !defined(MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_write_certificate_request( mbedtls_ssl_context *ssl )
+static int ssl_write_certificate_request(mbedtls_ssl_context *ssl)
 {
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info =
         ssl->handshake->ciphersuite_info;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate request" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> write certificate request"));
 
-    if( !mbedtls_ssl_ciphersuite_cert_req_allowed( ciphersuite_info ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate request" ) );
+    if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate request"));
         ssl->state++;
-        return( 0 );
+        return 0;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-    return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+    return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
 }
 #else /* !MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_write_certificate_request( mbedtls_ssl_context *ssl )
+static int ssl_write_certificate_request(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info =
@@ -3131,22 +2996,21 @@
     const mbedtls_x509_crt *crt;
     int authmode;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write certificate request" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> write certificate request"));
 
     ssl->state++;
 
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
-    if( ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET )
+    if (ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET) {
         authmode = ssl->handshake->sni_authmode;
-    else
+    } else
 #endif
-        authmode = ssl->conf->authmode;
+    authmode = ssl->conf->authmode;
 
-    if( !mbedtls_ssl_ciphersuite_cert_req_allowed( ciphersuite_info ) ||
-        authmode == MBEDTLS_SSL_VERIFY_NONE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write certificate request" ) );
-        return( 0 );
+    if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info) ||
+        authmode == MBEDTLS_SSL_VERIFY_NONE) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate request"));
+        return 0;
     }
 
     /*
@@ -3197,19 +3061,18 @@
      *     enum { (255) } HashAlgorithm;
      *     enum { (255) } SignatureAlgorithm;
      */
-    if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
-    {
+    if (ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3) {
         const int *cur;
 
         /*
          * Supported signature algorithms
          */
-        for( cur = ssl->conf->sig_hashes; *cur != MBEDTLS_MD_NONE; cur++ )
-        {
-            unsigned char hash = mbedtls_ssl_hash_from_md_alg( *cur );
+        for (cur = ssl->conf->sig_hashes; *cur != MBEDTLS_MD_NONE; cur++) {
+            unsigned char hash = mbedtls_ssl_hash_from_md_alg(*cur);
 
-            if( MBEDTLS_SSL_HASH_NONE == hash || mbedtls_ssl_set_calc_verify_md( ssl, hash ) )
+            if (MBEDTLS_SSL_HASH_NONE == hash || mbedtls_ssl_set_calc_verify_md(ssl, hash)) {
                 continue;
+            }
 
 #if defined(MBEDTLS_RSA_C)
             p[2 + sa_len++] = hash;
@@ -3221,7 +3084,7 @@
 #endif
         }
 
-        MBEDTLS_PUT_UINT16_BE( sa_len, p, 0 );
+        MBEDTLS_PUT_UINT16_BE(sa_len, p, 0);
         sa_len += 2;
         p += sa_len;
     }
@@ -3235,38 +3098,35 @@
 
     total_dn_size = 0;
 
-    if( ssl->conf->cert_req_ca_list ==  MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED )
-    {
+    if (ssl->conf->cert_req_ca_list ==  MBEDTLS_SSL_CERT_REQ_CA_LIST_ENABLED) {
         /* NOTE: If trusted certificates are provisioned
          *       via a CA callback (configured through
          *       `mbedtls_ssl_conf_ca_cb()`, then the
          *       CertificateRequest is currently left empty. */
 
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
-        if( ssl->handshake->sni_ca_chain != NULL )
+        if (ssl->handshake->sni_ca_chain != NULL) {
             crt = ssl->handshake->sni_ca_chain;
-        else
+        } else
 #endif
-            crt = ssl->conf->ca_chain;
+        crt = ssl->conf->ca_chain;
 
-        while( crt != NULL && crt->version != 0 )
-        {
+        while (crt != NULL && crt->version != 0) {
             /* It follows from RFC 5280 A.1 that this length
              * can be represented in at most 11 bits. */
             dn_size = (uint16_t) crt->subject_raw.len;
 
-            if( end < p || (size_t)( end - p ) < 2 + (size_t) dn_size )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "skipping CAs: buffer too short" ) );
+            if (end < p || (size_t) (end - p) < 2 + (size_t) dn_size) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("skipping CAs: buffer too short"));
                 break;
             }
 
-            MBEDTLS_PUT_UINT16_BE( dn_size, p, 0 );
+            MBEDTLS_PUT_UINT16_BE(dn_size, p, 0);
             p += 2;
-            memcpy( p, crt->subject_raw.p, dn_size );
+            memcpy(p, crt->subject_raw.p, dn_size);
             p += dn_size;
 
-            MBEDTLS_SSL_DEBUG_BUF( 3, "requested DN", p - dn_size, dn_size );
+            MBEDTLS_SSL_DEBUG_BUF(3, "requested DN", p - dn_size, dn_size);
 
             total_dn_size += 2 + dn_size;
             crt = crt->next;
@@ -3276,42 +3136,40 @@
     ssl->out_msglen  = p - buf;
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_CERTIFICATE_REQUEST;
-    MBEDTLS_PUT_UINT16_BE( total_dn_size, ssl->out_msg, 4 + ct_len + sa_len );
+    MBEDTLS_PUT_UINT16_BE(total_dn_size, ssl->out_msg, 4 + ct_len + sa_len);
 
-    ret = mbedtls_ssl_write_handshake_msg( ssl );
+    ret = mbedtls_ssl_write_handshake_msg(ssl);
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write certificate request" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= write certificate request"));
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) || \
     defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_get_ecdh_params_from_cert( mbedtls_ssl_context *ssl )
+static int ssl_get_ecdh_params_from_cert(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-    mbedtls_pk_context *own_key = mbedtls_ssl_own_key( ssl );
+    mbedtls_pk_context *own_key = mbedtls_ssl_own_key(ssl);
 
     /* Check if the key is a transparent ECDH key.
      * This also ensures that it is safe to call mbedtls_pk_ec(). */
-    if( mbedtls_pk_get_type( own_key ) != MBEDTLS_PK_ECKEY &&
-        mbedtls_pk_get_type( own_key ) != MBEDTLS_PK_ECKEY_DH )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "server key not ECDH capable" ) );
-        return( MBEDTLS_ERR_SSL_PK_TYPE_MISMATCH );
+    if (mbedtls_pk_get_type(own_key) != MBEDTLS_PK_ECKEY &&
+        mbedtls_pk_get_type(own_key) != MBEDTLS_PK_ECKEY_DH) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("server key not ECDH capable"));
+        return MBEDTLS_ERR_SSL_PK_TYPE_MISMATCH;
     }
 
-    if( ( ret = mbedtls_ecdh_get_params( &ssl->handshake->ecdh_ctx,
-                                 mbedtls_pk_ec( *own_key ),
-                                 MBEDTLS_ECDH_OURS ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ecdh_get_params" ), ret );
-        return( ret );
+    if ((ret = mbedtls_ecdh_get_params(&ssl->handshake->ecdh_ctx,
+                                       mbedtls_pk_ec(*own_key),
+                                       MBEDTLS_ECDH_OURS)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, ("mbedtls_ecdh_get_params"), ret);
+        return ret;
     }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) ||
           MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED */
@@ -3319,8 +3177,8 @@
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED) && \
     defined(MBEDTLS_SSL_ASYNC_PRIVATE)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_resume_server_key_exchange( mbedtls_ssl_context *ssl,
-                                           size_t *signature_len )
+static int ssl_resume_server_key_exchange(mbedtls_ssl_context *ssl,
+                                          size_t *signature_len)
 {
     /* Append the signature to ssl->out_msg, leaving 2 bytes for the
      * signature length which will be added in ssl_write_server_key_exchange
@@ -3328,17 +3186,16 @@
      * ssl_write_server_key_exchange also takes care of incrementing
      * ssl->out_msglen. */
     unsigned char *sig_start = ssl->out_msg + ssl->out_msglen + 2;
-    size_t sig_max_len = ( ssl->out_buf + MBEDTLS_SSL_OUT_CONTENT_LEN
-                           - sig_start );
-    int ret = ssl->conf->f_async_resume( ssl,
-                                         sig_start, signature_len, sig_max_len );
-    if( ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
-    {
+    size_t sig_max_len = (ssl->out_buf + MBEDTLS_SSL_OUT_CONTENT_LEN
+                          - sig_start);
+    int ret = ssl->conf->f_async_resume(ssl,
+                                        sig_start, signature_len, sig_max_len);
+    if (ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS) {
         ssl->handshake->async_in_progress = 0;
-        mbedtls_ssl_set_async_operation_data( ssl, NULL );
+        mbedtls_ssl_set_async_operation_data(ssl, NULL);
     }
-    MBEDTLS_SSL_DEBUG_RET( 2, "ssl_resume_server_key_exchange", ret );
-    return( ret );
+    MBEDTLS_SSL_DEBUG_RET(2, "ssl_resume_server_key_exchange", ret);
+    return ret;
 }
 #endif /* defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED) &&
           defined(MBEDTLS_SSL_ASYNC_PRIVATE) */
@@ -3347,8 +3204,8 @@
  * calculating the signature if any, but excluding formatting the
  * signature and sending the message. */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_prepare_server_key_exchange( mbedtls_ssl_context *ssl,
-                                            size_t *signature_len )
+static int ssl_prepare_server_key_exchange(mbedtls_ssl_context *ssl,
+                                           size_t *signature_len)
 {
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info =
         ssl->handshake->ciphersuite_info;
@@ -3376,8 +3233,7 @@
      * - ECJPAKE key exchanges
      */
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE )
-    {
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE) {
         int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
         size_t len = 0;
 
@@ -3385,11 +3241,10 @@
             &ssl->handshake->ecjpake_ctx,
             ssl->out_msg + ssl->out_msglen,
             MBEDTLS_SSL_OUT_CONTENT_LEN - ssl->out_msglen, &len,
-            ssl->conf->f_rng, ssl->conf->p_rng );
-        if( ret != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecjpake_write_round_two", ret );
-            return( ret );
+            ssl->conf->f_rng, ssl->conf->p_rng);
+        if (ret != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecjpake_write_round_two", ret);
+            return ret;
         }
 
         ssl->out_msglen += len;
@@ -3403,9 +3258,8 @@
      **/
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED)   || \
     defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK ||
-        ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK )
-    {
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK ||
+        ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK) {
         ssl->out_msg[ssl->out_msglen++] = 0x00;
         ssl->out_msg[ssl->out_msglen++] = 0x00;
     }
@@ -3416,15 +3270,13 @@
      * - DHE key exchanges
      */
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_DHE_ENABLED)
-    if( mbedtls_ssl_ciphersuite_uses_dhe( ciphersuite_info ) )
-    {
+    if (mbedtls_ssl_ciphersuite_uses_dhe(ciphersuite_info)) {
         int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
         size_t len = 0;
 
-        if( ssl->conf->dhm_P.p == NULL || ssl->conf->dhm_G.p == NULL )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "no DH parameters set" ) );
-            return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+        if (ssl->conf->dhm_P.p == NULL || ssl->conf->dhm_G.p == NULL) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("no DH parameters set"));
+            return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
         }
 
         /*
@@ -3436,22 +3288,20 @@
          *     opaque dh_Ys<1..2^16-1>;
          * } ServerDHParams;
          */
-        if( ( ret = mbedtls_dhm_set_group( &ssl->handshake->dhm_ctx,
-                                           &ssl->conf->dhm_P,
-                                           &ssl->conf->dhm_G ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_set_group", ret );
-            return( ret );
+        if ((ret = mbedtls_dhm_set_group(&ssl->handshake->dhm_ctx,
+                                         &ssl->conf->dhm_P,
+                                         &ssl->conf->dhm_G)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_set_group", ret);
+            return ret;
         }
 
-        if( ( ret = mbedtls_dhm_make_params(
-                  &ssl->handshake->dhm_ctx,
-                  (int) mbedtls_mpi_size( &ssl->handshake->dhm_ctx.P ),
-                  ssl->out_msg + ssl->out_msglen, &len,
-                  ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_make_params", ret );
-            return( ret );
+        if ((ret = mbedtls_dhm_make_params(
+                 &ssl->handshake->dhm_ctx,
+                 (int) mbedtls_mpi_size(&ssl->handshake->dhm_ctx.P),
+                 ssl->out_msg + ssl->out_msglen, &len,
+                 ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_make_params", ret);
+            return ret;
         }
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED)
@@ -3460,10 +3310,10 @@
 
         ssl->out_msglen += len;
 
-        MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: X ", &ssl->handshake->dhm_ctx.X  );
-        MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: P ", &ssl->handshake->dhm_ctx.P  );
-        MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: G ", &ssl->handshake->dhm_ctx.G  );
-        MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: GX", &ssl->handshake->dhm_ctx.GX );
+        MBEDTLS_SSL_DEBUG_MPI(3, "DHM: X ", &ssl->handshake->dhm_ctx.X);
+        MBEDTLS_SSL_DEBUG_MPI(3, "DHM: P ", &ssl->handshake->dhm_ctx.P);
+        MBEDTLS_SSL_DEBUG_MPI(3, "DHM: G ", &ssl->handshake->dhm_ctx.G);
+        MBEDTLS_SSL_DEBUG_MPI(3, "DHM: GX", &ssl->handshake->dhm_ctx.GX);
     }
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_DHE_ENABLED */
 
@@ -3471,8 +3321,7 @@
      * - ECDHE key exchanges
      */
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDHE_ENABLED)
-    if( mbedtls_ssl_ciphersuite_uses_ecdhe( ciphersuite_info ) )
-    {
+    if (mbedtls_ssl_ciphersuite_uses_ecdhe(ciphersuite_info)) {
         /*
          * Ephemeral ECDH parameters:
          *
@@ -3487,35 +3336,35 @@
         size_t len = 0;
 
         /* Match our preference list against the offered curves */
-        for( gid = ssl->conf->curve_list; *gid != MBEDTLS_ECP_DP_NONE; gid++ )
-            for( curve = ssl->handshake->curves; *curve != NULL; curve++ )
-                if( (*curve)->grp_id == *gid )
+        for (gid = ssl->conf->curve_list; *gid != MBEDTLS_ECP_DP_NONE; gid++) {
+            for (curve = ssl->handshake->curves; *curve != NULL; curve++) {
+                if ((*curve)->grp_id == *gid) {
                     goto curve_matching_done;
+                }
+            }
+        }
 
 curve_matching_done:
-        if( curve == NULL || *curve == NULL )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "no matching curve for ECDHE" ) );
-            return( MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN );
+        if (curve == NULL || *curve == NULL) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("no matching curve for ECDHE"));
+            return MBEDTLS_ERR_SSL_NO_CIPHER_CHOSEN;
         }
 
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "ECDHE curve: %s", (*curve)->name ) );
+        MBEDTLS_SSL_DEBUG_MSG(2, ("ECDHE curve: %s", (*curve)->name));
 
-        if( ( ret = mbedtls_ecdh_setup( &ssl->handshake->ecdh_ctx,
-                                        (*curve)->grp_id ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecp_group_load", ret );
-            return( ret );
+        if ((ret = mbedtls_ecdh_setup(&ssl->handshake->ecdh_ctx,
+                                      (*curve)->grp_id)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecp_group_load", ret);
+            return ret;
         }
 
-        if( ( ret = mbedtls_ecdh_make_params(
-                  &ssl->handshake->ecdh_ctx, &len,
-                  ssl->out_msg + ssl->out_msglen,
-                  MBEDTLS_SSL_OUT_CONTENT_LEN - ssl->out_msglen,
-                  ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_make_params", ret );
-            return( ret );
+        if ((ret = mbedtls_ecdh_make_params(
+                 &ssl->handshake->ecdh_ctx, &len,
+                 ssl->out_msg + ssl->out_msglen,
+                 MBEDTLS_SSL_OUT_CONTENT_LEN - ssl->out_msglen,
+                 ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecdh_make_params", ret);
+            return ret;
         }
 
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED)
@@ -3524,8 +3373,8 @@
 
         ssl->out_msglen += len;
 
-        MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx,
-                                MBEDTLS_DEBUG_ECDH_Q );
+        MBEDTLS_SSL_DEBUG_ECDH(3, &ssl->handshake->ecdh_ctx,
+                               MBEDTLS_DEBUG_ECDH_Q);
     }
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDHE_ENABLED */
 
@@ -3536,8 +3385,7 @@
      *
      */
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED)
-    if( mbedtls_ssl_ciphersuite_uses_server_signature( ciphersuite_info ) )
-    {
+    if (mbedtls_ssl_ciphersuite_uses_server_signature(ciphersuite_info)) {
         size_t dig_signed_len = ssl->out_msg + ssl->out_msglen - dig_signed;
         size_t hashlen = 0;
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
@@ -3560,31 +3408,26 @@
 
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
         mbedtls_pk_type_t sig_alg =
-            mbedtls_ssl_get_ciphersuite_sig_pk_alg( ciphersuite_info );
-        if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
-        {
+            mbedtls_ssl_get_ciphersuite_sig_pk_alg(ciphersuite_info);
+        if (ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3) {
             /* A: For TLS 1.2, obey signature-hash-algorithm extension
              *    (RFC 5246, Sec. 7.4.1.4.1). */
-            if( sig_alg == MBEDTLS_PK_NONE ||
-                ( md_alg = mbedtls_ssl_sig_hash_set_find( &ssl->handshake->hash_algs,
-                                                          sig_alg ) ) == MBEDTLS_MD_NONE )
-            {
-                MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
+            if (sig_alg == MBEDTLS_PK_NONE ||
+                (md_alg = mbedtls_ssl_sig_hash_set_find(&ssl->handshake->hash_algs,
+                                                        sig_alg)) == MBEDTLS_MD_NONE) {
+                MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
                 /* (... because we choose a cipher suite
                  *      only if there is a matching hash.) */
-                return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+                return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
             }
-        }
-        else
+        } else
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
 #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \
-    defined(MBEDTLS_SSL_PROTO_TLS1_1)
-        if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA )
-        {
+        defined(MBEDTLS_SSL_PROTO_TLS1_1)
+        if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA) {
             /* B: Default hash SHA1 */
             md_alg = MBEDTLS_MD_SHA1;
-        }
-        else
+        } else
 #endif /* MBEDTLS_SSL_PROTO_SSL3 || MBEDTLS_SSL_PROTO_TLS1 || \
           MBEDTLS_SSL_PROTO_TLS1_1 */
         {
@@ -3592,52 +3435,49 @@
             md_alg = MBEDTLS_MD_NONE;
         }
 
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "pick hash algorithm %u for signing", (unsigned) md_alg ) );
+        MBEDTLS_SSL_DEBUG_MSG(3, ("pick hash algorithm %u for signing", (unsigned) md_alg));
 
         /*
          * 2.2: Compute the hash to be signed
          */
 #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \
-    defined(MBEDTLS_SSL_PROTO_TLS1_1)
-        if( md_alg == MBEDTLS_MD_NONE )
-        {
+        defined(MBEDTLS_SSL_PROTO_TLS1_1)
+        if (md_alg == MBEDTLS_MD_NONE) {
             hashlen = 36;
-            ret = mbedtls_ssl_get_key_exchange_md_ssl_tls( ssl, hash,
-                                                           dig_signed,
-                                                           dig_signed_len );
-            if( ret != 0 )
-                return( ret );
-        }
-        else
+            ret = mbedtls_ssl_get_key_exchange_md_ssl_tls(ssl, hash,
+                                                          dig_signed,
+                                                          dig_signed_len);
+            if (ret != 0) {
+                return ret;
+            }
+        } else
 #endif /* MBEDTLS_SSL_PROTO_SSL3 || MBEDTLS_SSL_PROTO_TLS1 || \
           MBEDTLS_SSL_PROTO_TLS1_1 */
 #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \
-    defined(MBEDTLS_SSL_PROTO_TLS1_2)
-        if( md_alg != MBEDTLS_MD_NONE )
-        {
-            ret = mbedtls_ssl_get_key_exchange_md_tls1_2( ssl, hash, &hashlen,
-                                                          dig_signed,
-                                                          dig_signed_len,
-                                                          md_alg );
-            if( ret != 0 )
-                return( ret );
-        }
-        else
+        defined(MBEDTLS_SSL_PROTO_TLS1_2)
+        if (md_alg != MBEDTLS_MD_NONE) {
+            ret = mbedtls_ssl_get_key_exchange_md_tls1_2(ssl, hash, &hashlen,
+                                                         dig_signed,
+                                                         dig_signed_len,
+                                                         md_alg);
+            if (ret != 0) {
+                return ret;
+            }
+        } else
 #endif /* MBEDTLS_SSL_PROTO_TLS1 || MBEDTLS_SSL_PROTO_TLS1_1 || \
           MBEDTLS_SSL_PROTO_TLS1_2 */
         {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-            return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+            MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+            return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
         }
 
-        MBEDTLS_SSL_DEBUG_BUF( 3, "parameters hash", hash, hashlen );
+        MBEDTLS_SSL_DEBUG_BUF(3, "parameters hash", hash, hashlen);
 
         /*
          * 2.3: Compute and add the signature
          */
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
-        if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
-        {
+        if (ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3) {
             /*
              * For TLS 1.2, we need to specify signature and hash algorithm
              * explicitly through a prefix to the signature.
@@ -3655,40 +3495,37 @@
              */
 
             ssl->out_msg[ssl->out_msglen++] =
-                mbedtls_ssl_hash_from_md_alg( md_alg );
+                mbedtls_ssl_hash_from_md_alg(md_alg);
             ssl->out_msg[ssl->out_msglen++] =
-                mbedtls_ssl_sig_from_pk_alg( sig_alg );
+                mbedtls_ssl_sig_from_pk_alg(sig_alg);
         }
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        if( ssl->conf->f_async_sign_start != NULL )
-        {
-            ret = ssl->conf->f_async_sign_start( ssl,
-                                                 mbedtls_ssl_own_cert( ssl ),
-                                                 md_alg, hash, hashlen );
-            switch( ret )
-            {
-            case MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH:
-                /* act as if f_async_sign was null */
-                break;
-            case 0:
-                ssl->handshake->async_in_progress = 1;
-                return( ssl_resume_server_key_exchange( ssl, signature_len ) );
-            case MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS:
-                ssl->handshake->async_in_progress = 1;
-                return( MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
-            default:
-                MBEDTLS_SSL_DEBUG_RET( 1, "f_async_sign_start", ret );
-                return( ret );
+        if (ssl->conf->f_async_sign_start != NULL) {
+            ret = ssl->conf->f_async_sign_start(ssl,
+                                                mbedtls_ssl_own_cert(ssl),
+                                                md_alg, hash, hashlen);
+            switch (ret) {
+                case MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH:
+                    /* act as if f_async_sign was null */
+                    break;
+                case 0:
+                    ssl->handshake->async_in_progress = 1;
+                    return ssl_resume_server_key_exchange(ssl, signature_len);
+                case MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS:
+                    ssl->handshake->async_in_progress = 1;
+                    return MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS;
+                default:
+                    MBEDTLS_SSL_DEBUG_RET(1, "f_async_sign_start", ret);
+                    return ret;
             }
         }
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
 
-        if( mbedtls_ssl_own_key( ssl ) == NULL )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no private key" ) );
-            return( MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED );
+        if (mbedtls_ssl_own_key(ssl) == NULL) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("got no private key"));
+            return MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED;
         }
 
         /* Append the signature to ssl->out_msg, leaving 2 bytes for the
@@ -3696,20 +3533,19 @@
          * after the call to ssl_prepare_server_key_exchange.
          * ssl_write_server_key_exchange also takes care of incrementing
          * ssl->out_msglen. */
-        if( ( ret = mbedtls_pk_sign( mbedtls_ssl_own_key( ssl ),
-                                     md_alg, hash, hashlen,
-                                     ssl->out_msg + ssl->out_msglen + 2,
-                                     signature_len,
-                                     ssl->conf->f_rng,
-                                     ssl->conf->p_rng ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_sign", ret );
-            return( ret );
+        if ((ret = mbedtls_pk_sign(mbedtls_ssl_own_key(ssl),
+                                   md_alg, hash, hashlen,
+                                   ssl->out_msg + ssl->out_msglen + 2,
+                                   signature_len,
+                                   ssl->conf->f_rng,
+                                   ssl->conf->p_rng)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_pk_sign", ret);
+            return ret;
         }
     }
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED */
 
-    return( 0 );
+    return 0;
 }
 
 /* Prepare the ServerKeyExchange message and send it. For ciphersuites
@@ -3717,41 +3553,38 @@
  * way, if successful, move on to the next step in the SSL state
  * machine. */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_write_server_key_exchange( mbedtls_ssl_context *ssl )
+static int ssl_write_server_key_exchange(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t signature_len = 0;
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_NON_PFS_ENABLED)
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info =
-                            ssl->handshake->ciphersuite_info;
+        ssl->handshake->ciphersuite_info;
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_NON_PFS_ENABLED */
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write server key exchange" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> write server key exchange"));
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_NON_PFS_ENABLED)
     /* Extract static ECDH parameters and abort if ServerKeyExchange
      * is not needed. */
-    if( mbedtls_ssl_ciphersuite_no_pfs( ciphersuite_info ) )
-    {
+    if (mbedtls_ssl_ciphersuite_no_pfs(ciphersuite_info)) {
         /* For suites involving ECDH, extract DH parameters
          * from certificate at this point. */
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_ECDH_ENABLED)
-        if( mbedtls_ssl_ciphersuite_uses_ecdh( ciphersuite_info ) )
-        {
-            ret = ssl_get_ecdh_params_from_cert( ssl );
-            if( ret != 0 )
-            {
-                MBEDTLS_SSL_DEBUG_RET( 1, "ssl_get_ecdh_params_from_cert", ret );
-                return( ret );
+        if (mbedtls_ssl_ciphersuite_uses_ecdh(ciphersuite_info)) {
+            ret = ssl_get_ecdh_params_from_cert(ssl);
+            if (ret != 0) {
+                MBEDTLS_SSL_DEBUG_RET(1, "ssl_get_ecdh_params_from_cert", ret);
+                return ret;
             }
         }
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_ECDH_ENABLED */
 
         /* Key exchanges not involving ephemeral keys don't use
          * ServerKeyExchange, so end here. */
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip write server key exchange" ) );
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write server key exchange"));
         ssl->state++;
-        return( 0 );
+        return 0;
     }
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_NON_PFS_ENABLED */
 
@@ -3759,44 +3592,41 @@
     defined(MBEDTLS_SSL_ASYNC_PRIVATE)
     /* If we have already prepared the message and there is an ongoing
      * signature operation, resume signing. */
-    if( ssl->handshake->async_in_progress != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "resuming signature operation" ) );
-        ret = ssl_resume_server_key_exchange( ssl, &signature_len );
-    }
-    else
+    if (ssl->handshake->async_in_progress != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("resuming signature operation"));
+        ret = ssl_resume_server_key_exchange(ssl, &signature_len);
+    } else
 #endif /* defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED) &&
           defined(MBEDTLS_SSL_ASYNC_PRIVATE) */
     {
         /* ServerKeyExchange is needed. Prepare the message. */
-        ret = ssl_prepare_server_key_exchange( ssl, &signature_len );
+        ret = ssl_prepare_server_key_exchange(ssl, &signature_len);
     }
 
-    if( ret != 0 )
-    {
+    if (ret != 0) {
         /* If we're starting to write a new message, set ssl->out_msglen
          * to 0. But if we're resuming after an asynchronous message,
          * out_msglen is the amount of data written so far and mst be
          * preserved. */
-        if( ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
-            MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server key exchange (pending)" ) );
-        else
+        if (ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS) {
+            MBEDTLS_SSL_DEBUG_MSG(2, ("<= write server key exchange (pending)"));
+        } else {
             ssl->out_msglen = 0;
-        return( ret );
+        }
+        return ret;
     }
 
     /* If there is a signature, write its length.
      * ssl_prepare_server_key_exchange already wrote the signature
      * itself at its proper place in the output buffer. */
 #if defined(MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED)
-    if( signature_len != 0 )
-    {
-        ssl->out_msg[ssl->out_msglen++] = MBEDTLS_BYTE_1( signature_len );
-        ssl->out_msg[ssl->out_msglen++] = MBEDTLS_BYTE_0( signature_len );
+    if (signature_len != 0) {
+        ssl->out_msg[ssl->out_msglen++] = MBEDTLS_BYTE_1(signature_len);
+        ssl->out_msg[ssl->out_msglen++] = MBEDTLS_BYTE_0(signature_len);
 
-        MBEDTLS_SSL_DEBUG_BUF( 3, "my signature",
-                               ssl->out_msg + ssl->out_msglen,
-                               signature_len );
+        MBEDTLS_SSL_DEBUG_BUF(3, "my signature",
+                              ssl->out_msg + ssl->out_msglen,
+                              signature_len);
 
         /* Skip over the already-written signature */
         ssl->out_msglen += signature_len;
@@ -3809,22 +3639,21 @@
 
     ssl->state++;
 
-    if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
+        return ret;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server key exchange" ) );
-    return( 0 );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= write server key exchange"));
+    return 0;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_write_server_hello_done( mbedtls_ssl_context *ssl )
+static int ssl_write_server_hello_done(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write server hello done" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> write server hello done"));
 
     ssl->out_msglen  = 4;
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
@@ -3833,35 +3662,34 @@
     ssl->state++;
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM )
-        mbedtls_ssl_send_flight_completed( ssl );
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
+        mbedtls_ssl_send_flight_completed(ssl);
+    }
 #endif
 
-    if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
+        return ret;
     }
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
-        ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret );
-        return( ret );
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
+        (ret = mbedtls_ssl_flight_transmit(ssl)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_flight_transmit", ret);
+        return ret;
     }
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server hello done" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= write server hello done"));
 
-    return( 0 );
+    return 0;
 }
 
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED) ||                       \
     defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_client_dh_public( mbedtls_ssl_context *ssl, unsigned char **p,
-                                       const unsigned char *end )
+static int ssl_parse_client_dh_public(mbedtls_ssl_context *ssl, unsigned char **p,
+                                      const unsigned char *end)
 {
     int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
     size_t n;
@@ -3869,32 +3697,29 @@
     /*
      * Receive G^Y mod P, premaster = (G^Y)^X mod P
      */
-    if( *p + 2 > end )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (*p + 2 > end) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
     }
 
-    n = ( (*p)[0] << 8 ) | (*p)[1];
+    n = ((*p)[0] << 8) | (*p)[1];
     *p += 2;
 
-    if( *p + n > end )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (*p + n > end) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
     }
 
-    if( ( ret = mbedtls_dhm_read_public( &ssl->handshake->dhm_ctx, *p, n ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_read_public", ret );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP );
+    if ((ret = mbedtls_dhm_read_public(&ssl->handshake->dhm_ctx, *p, n)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_read_public", ret);
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP;
     }
 
     *p += n;
 
-    MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: GY", &ssl->handshake->dhm_ctx.GY );
+    MBEDTLS_SSL_DEBUG_MPI(3, "DHM: GY", &ssl->handshake->dhm_ctx.GY);
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED ||
           MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
@@ -3904,50 +3729,48 @@
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_resume_decrypt_pms( mbedtls_ssl_context *ssl,
-                                   unsigned char *peer_pms,
-                                   size_t *peer_pmslen,
-                                   size_t peer_pmssize )
+static int ssl_resume_decrypt_pms(mbedtls_ssl_context *ssl,
+                                  unsigned char *peer_pms,
+                                  size_t *peer_pmslen,
+                                  size_t peer_pmssize)
 {
-    int ret = ssl->conf->f_async_resume( ssl,
-                                         peer_pms, peer_pmslen, peer_pmssize );
-    if( ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
-    {
+    int ret = ssl->conf->f_async_resume(ssl,
+                                        peer_pms, peer_pmslen, peer_pmssize);
+    if (ret != MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS) {
         ssl->handshake->async_in_progress = 0;
-        mbedtls_ssl_set_async_operation_data( ssl, NULL );
+        mbedtls_ssl_set_async_operation_data(ssl, NULL);
     }
-    MBEDTLS_SSL_DEBUG_RET( 2, "ssl_decrypt_encrypted_pms", ret );
-    return( ret );
+    MBEDTLS_SSL_DEBUG_RET(2, "ssl_decrypt_encrypted_pms", ret);
+    return ret;
 }
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_decrypt_encrypted_pms( mbedtls_ssl_context *ssl,
-                                      const unsigned char *p,
-                                      const unsigned char *end,
-                                      unsigned char *peer_pms,
-                                      size_t *peer_pmslen,
-                                      size_t peer_pmssize )
+static int ssl_decrypt_encrypted_pms(mbedtls_ssl_context *ssl,
+                                     const unsigned char *p,
+                                     const unsigned char *end,
+                                     unsigned char *peer_pms,
+                                     size_t *peer_pmslen,
+                                     size_t peer_pmssize)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    mbedtls_x509_crt *own_cert = mbedtls_ssl_own_cert( ssl );
-    if( own_cert == NULL ) {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no local certificate" ) );
-        return( MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE );
+    mbedtls_x509_crt *own_cert = mbedtls_ssl_own_cert(ssl);
+    if (own_cert == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("got no local certificate"));
+        return MBEDTLS_ERR_SSL_NO_CLIENT_CERTIFICATE;
     }
     mbedtls_pk_context *public_key = &own_cert->pk;
-    mbedtls_pk_context *private_key = mbedtls_ssl_own_key( ssl );
-    size_t len = mbedtls_pk_get_len( public_key );
+    mbedtls_pk_context *private_key = mbedtls_ssl_own_key(ssl);
+    size_t len = mbedtls_pk_get_len(public_key);
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
     /* If we have already started decoding the message and there is an ongoing
      * decryption operation, resume signing. */
-    if( ssl->handshake->async_in_progress != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "resuming decryption operation" ) );
-        return( ssl_resume_decrypt_pms( ssl,
-                                        peer_pms, peer_pmslen, peer_pmssize ) );
+    if (ssl->handshake->async_in_progress != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("resuming decryption operation"));
+        return ssl_resume_decrypt_pms(ssl,
+                                      peer_pms, peer_pmslen, peer_pmssize);
     }
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
 
@@ -3956,75 +3779,68 @@
      */
 #if defined(MBEDTLS_SSL_PROTO_TLS1) || defined(MBEDTLS_SSL_PROTO_TLS1_1) || \
     defined(MBEDTLS_SSL_PROTO_TLS1_2)
-    if( ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_0 )
-    {
-        if ( p + 2 > end )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_0) {
+        if (p + 2 > end) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
         }
-        if( *p++ != MBEDTLS_BYTE_1( len ) ||
-            *p++ != MBEDTLS_BYTE_0( len ) )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+        if (*p++ != MBEDTLS_BYTE_1(len) ||
+            *p++ != MBEDTLS_BYTE_0(len)) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
         }
     }
 #endif
 
-    if( p + len != end )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (p + len != end) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
     }
 
     /*
      * Decrypt the premaster secret
      */
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-    if( ssl->conf->f_async_decrypt_start != NULL )
-    {
-        ret = ssl->conf->f_async_decrypt_start( ssl,
-                                                mbedtls_ssl_own_cert( ssl ),
-                                                p, len );
-        switch( ret )
-        {
-        case MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH:
-            /* act as if f_async_decrypt_start was null */
-            break;
-        case 0:
-            ssl->handshake->async_in_progress = 1;
-            return( ssl_resume_decrypt_pms( ssl,
-                                            peer_pms,
-                                            peer_pmslen,
-                                            peer_pmssize ) );
-        case MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS:
-            ssl->handshake->async_in_progress = 1;
-            return( MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS );
-        default:
-            MBEDTLS_SSL_DEBUG_RET( 1, "f_async_decrypt_start", ret );
-            return( ret );
+    if (ssl->conf->f_async_decrypt_start != NULL) {
+        ret = ssl->conf->f_async_decrypt_start(ssl,
+                                               mbedtls_ssl_own_cert(ssl),
+                                               p, len);
+        switch (ret) {
+            case MBEDTLS_ERR_SSL_HW_ACCEL_FALLTHROUGH:
+                /* act as if f_async_decrypt_start was null */
+                break;
+            case 0:
+                ssl->handshake->async_in_progress = 1;
+                return ssl_resume_decrypt_pms(ssl,
+                                              peer_pms,
+                                              peer_pmslen,
+                                              peer_pmssize);
+            case MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS:
+                ssl->handshake->async_in_progress = 1;
+                return MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS;
+            default:
+                MBEDTLS_SSL_DEBUG_RET(1, "f_async_decrypt_start", ret);
+                return ret;
         }
     }
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
 
-    if( ! mbedtls_pk_can_do( private_key, MBEDTLS_PK_RSA ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no RSA private key" ) );
-        return( MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED );
+    if (!mbedtls_pk_can_do(private_key, MBEDTLS_PK_RSA)) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("got no RSA private key"));
+        return MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED;
     }
 
-    ret = mbedtls_pk_decrypt( private_key, p, len,
-                              peer_pms, peer_pmslen, peer_pmssize,
-                              ssl->conf->f_rng, ssl->conf->p_rng );
-    return( ret );
+    ret = mbedtls_pk_decrypt(private_key, p, len,
+                             peer_pms, peer_pmslen, peer_pmssize,
+                             ssl->conf->f_rng, ssl->conf->p_rng);
+    return ret;
 }
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_encrypted_pms( mbedtls_ssl_context *ssl,
-                                    const unsigned char *p,
-                                    const unsigned char *end,
-                                    size_t pms_offset )
+static int ssl_parse_encrypted_pms(mbedtls_ssl_context *ssl,
+                                   const unsigned char *p,
+                                   const unsigned char *end,
+                                   size_t pms_offset)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     unsigned char *pms = ssl->handshake->premaster + pms_offset;
@@ -4044,19 +3860,20 @@
     peer_pms[0] = peer_pms[1] = ~0;
     peer_pmslen = 0;
 
-    ret = ssl_decrypt_encrypted_pms( ssl, p, end,
-                                     peer_pms,
-                                     &peer_pmslen,
-                                     sizeof( peer_pms ) );
+    ret = ssl_decrypt_encrypted_pms(ssl, p, end,
+                                    peer_pms,
+                                    &peer_pmslen,
+                                    sizeof(peer_pms));
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-    if ( ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS )
-        return( ret );
+    if (ret == MBEDTLS_ERR_SSL_ASYNC_IN_PROGRESS) {
+        return ret;
+    }
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
 
-    mbedtls_ssl_write_version( ssl->handshake->max_major_ver,
-                               ssl->handshake->max_minor_ver,
-                               ssl->conf->transport, ver );
+    mbedtls_ssl_write_version(ssl->handshake->max_major_ver,
+                              ssl->handshake->max_minor_ver,
+                              ssl->conf->transport, ver);
 
     /* Avoid data-dependent branches while checking for invalid
      * padding, to protect against timing-based Bleichenbacher-type
@@ -4067,7 +3884,7 @@
     diff |= peer_pms[1] ^ ver[1];
 
     /* mask = diff ? 0xff : 0x00 using bit operations to avoid branches */
-    mask = mbedtls_ct_uint_mask( diff );
+    mask = mbedtls_ct_uint_mask(diff);
 
     /*
      * Protection against Bleichenbacher's attack: invalid PKCS#1 v1.5 padding
@@ -4078,101 +3895,94 @@
      * successful. In particular, always generate the fake premaster secret,
      * regardless of whether it will ultimately influence the output or not.
      */
-    ret = ssl->conf->f_rng( ssl->conf->p_rng, fake_pms, sizeof( fake_pms ) );
-    if( ret != 0 )
-    {
+    ret = ssl->conf->f_rng(ssl->conf->p_rng, fake_pms, sizeof(fake_pms));
+    if (ret != 0) {
         /* It's ok to abort on an RNG failure, since this does not reveal
          * anything about the RSA decryption. */
-        return( ret );
+        return ret;
     }
 
 #if defined(MBEDTLS_SSL_DEBUG_ALL)
-    if( diff != 0 )
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
+    if (diff != 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+    }
 #endif
 
-    if( sizeof( ssl->handshake->premaster ) < pms_offset ||
-        sizeof( ssl->handshake->premaster ) - pms_offset < 48 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    if (sizeof(ssl->handshake->premaster) < pms_offset ||
+        sizeof(ssl->handshake->premaster) - pms_offset < 48) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
     ssl->handshake->pmslen = 48;
 
     /* Set pms to either the true or the fake PMS, without
      * data-dependent branches. */
-    for( i = 0; i < ssl->handshake->pmslen; i++ )
-        pms[i] = ( mask & fake_pms[i] ) | ( (~mask) & peer_pms[i] );
+    for (i = 0; i < ssl->handshake->pmslen; i++) {
+        pms[i] = (mask & fake_pms[i]) | ((~mask) & peer_pms[i]);
+    }
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_RSA_ENABLED ||
           MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED */
 
 #if defined(MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_client_psk_identity( mbedtls_ssl_context *ssl, unsigned char **p,
-                                          const unsigned char *end )
+static int ssl_parse_client_psk_identity(mbedtls_ssl_context *ssl, unsigned char **p,
+                                         const unsigned char *end)
 {
     int ret = 0;
     uint16_t n;
 
-    if( ssl_conf_has_psk_or_cb( ssl->conf ) == 0 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "got no pre-shared key" ) );
-        return( MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED );
+    if (ssl_conf_has_psk_or_cb(ssl->conf) == 0) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("got no pre-shared key"));
+        return MBEDTLS_ERR_SSL_PRIVATE_KEY_REQUIRED;
     }
 
     /*
      * Receive client pre-shared key identity name
      */
-    if( end - *p < 2 )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (end - *p < 2) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
     }
 
-    n = ( (*p)[0] << 8 ) | (*p)[1];
+    n = ((*p)[0] << 8) | (*p)[1];
     *p += 2;
 
-    if( n == 0 || n > end - *p )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (n == 0 || n > end - *p) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
     }
 
-    if( ssl->conf->f_psk != NULL )
-    {
-        if( ssl->conf->f_psk( ssl->conf->p_psk, ssl, *p, n ) != 0 )
+    if (ssl->conf->f_psk != NULL) {
+        if (ssl->conf->f_psk(ssl->conf->p_psk, ssl, *p, n) != 0) {
             ret = MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY;
-    }
-    else
-    {
+        }
+    } else {
         /* Identity is not a big secret since clients send it in the clear,
          * but treat it carefully anyway, just in case */
-        if( n != ssl->conf->psk_identity_len ||
-            mbedtls_ct_memcmp( ssl->conf->psk_identity, *p, n ) != 0 )
-        {
+        if (n != ssl->conf->psk_identity_len ||
+            mbedtls_ct_memcmp(ssl->conf->psk_identity, *p, n) != 0) {
             ret = MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY;
         }
     }
 
-    if( ret == MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY )
-    {
-        MBEDTLS_SSL_DEBUG_BUF( 3, "Unknown PSK identity", *p, n );
-        mbedtls_ssl_send_alert_message( ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
-                                        MBEDTLS_SSL_ALERT_MSG_UNKNOWN_PSK_IDENTITY );
-        return( MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY );
+    if (ret == MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY) {
+        MBEDTLS_SSL_DEBUG_BUF(3, "Unknown PSK identity", *p, n);
+        mbedtls_ssl_send_alert_message(ssl, MBEDTLS_SSL_ALERT_LEVEL_FATAL,
+                                       MBEDTLS_SSL_ALERT_MSG_UNKNOWN_PSK_IDENTITY);
+        return MBEDTLS_ERR_SSL_UNKNOWN_IDENTITY;
     }
 
     *p += n;
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_PSK_ENABLED */
 
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_client_key_exchange( mbedtls_ssl_context *ssl )
+static int ssl_parse_client_key_exchange(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info;
@@ -4180,334 +3990,285 @@
 
     ciphersuite_info = ssl->handshake->ciphersuite_info;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse client key exchange" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse client key exchange"));
 
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE) && \
-    ( defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED) || \
-      defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED) )
-    if( ( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK ||
-          ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA ) &&
-        ( ssl->handshake->async_in_progress != 0 ) )
-    {
+    (defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED) || \
+    defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED))
+    if ((ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK ||
+         ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA) &&
+        (ssl->handshake->async_in_progress != 0)) {
         /* We've already read a record and there is an asynchronous
          * operation in progress to decrypt it. So skip reading the
          * record. */
-        MBEDTLS_SSL_DEBUG_MSG( 3, ( "will resume decryption of previously-read record" ) );
-    }
-    else
+        MBEDTLS_SSL_DEBUG_MSG(3, ("will resume decryption of previously-read record"));
+    } else
 #endif
-    if( ( ret = mbedtls_ssl_read_record( ssl, 1 ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_read_record", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_read_record(ssl, 1)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_read_record", ret);
+        return ret;
     }
 
-    p = ssl->in_msg + mbedtls_ssl_hs_hdr_len( ssl );
+    p = ssl->in_msg + mbedtls_ssl_hs_hdr_len(ssl);
     end = ssl->in_msg + ssl->in_hslen;
 
-    if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
     }
 
-    if( ssl->in_msg[0] != MBEDTLS_SSL_HS_CLIENT_KEY_EXCHANGE )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+    if (ssl->in_msg[0] != MBEDTLS_SSL_HS_CLIENT_KEY_EXCHANGE) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
     }
 
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_RSA )
-    {
-        if( ( ret = ssl_parse_client_dh_public( ssl, &p, end ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_client_dh_public" ), ret );
-            return( ret );
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_RSA) {
+        if ((ret = ssl_parse_client_dh_public(ssl, &p, end)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_client_dh_public"), ret);
+            return ret;
         }
 
-        if( p != end )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+        if (p != end) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
         }
 
-        if( ( ret = mbedtls_dhm_calc_secret( &ssl->handshake->dhm_ctx,
-                                      ssl->handshake->premaster,
-                                      MBEDTLS_PREMASTER_SIZE,
-                                     &ssl->handshake->pmslen,
-                                      ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_dhm_calc_secret", ret );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS );
+        if ((ret = mbedtls_dhm_calc_secret(&ssl->handshake->dhm_ctx,
+                                           ssl->handshake->premaster,
+                                           MBEDTLS_PREMASTER_SIZE,
+                                           &ssl->handshake->pmslen,
+                                           ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_dhm_calc_secret", ret);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS;
         }
 
-        MBEDTLS_SSL_DEBUG_MPI( 3, "DHM: K ", &ssl->handshake->dhm_ctx.K  );
-    }
-    else
+        MBEDTLS_SSL_DEBUG_MPI(3, "DHM: K ", &ssl->handshake->dhm_ctx.K);
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_RSA_ENABLED */
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED) ||                     \
     defined(MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED) ||                   \
     defined(MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED) ||                      \
     defined(MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_RSA ||
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_RSA ||
         ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA ||
         ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDH_RSA ||
-        ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA )
-    {
-        if( ( ret = mbedtls_ecdh_read_public( &ssl->handshake->ecdh_ctx,
-                                      p, end - p) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_read_public", ret );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP );
+        ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA) {
+        if ((ret = mbedtls_ecdh_read_public(&ssl->handshake->ecdh_ctx,
+                                            p, end - p)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecdh_read_public", ret);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP;
         }
 
-        MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx,
-                                MBEDTLS_DEBUG_ECDH_QP );
+        MBEDTLS_SSL_DEBUG_ECDH(3, &ssl->handshake->ecdh_ctx,
+                               MBEDTLS_DEBUG_ECDH_QP);
 
-        if( ( ret = mbedtls_ecdh_calc_secret( &ssl->handshake->ecdh_ctx,
-                                      &ssl->handshake->pmslen,
-                                       ssl->handshake->premaster,
-                                       MBEDTLS_MPI_MAX_SIZE,
-                                       ssl->conf->f_rng, ssl->conf->p_rng ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_calc_secret", ret );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS );
+        if ((ret = mbedtls_ecdh_calc_secret(&ssl->handshake->ecdh_ctx,
+                                            &ssl->handshake->pmslen,
+                                            ssl->handshake->premaster,
+                                            MBEDTLS_MPI_MAX_SIZE,
+                                            ssl->conf->f_rng, ssl->conf->p_rng)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecdh_calc_secret", ret);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_CS;
         }
 
-        MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx,
-                                MBEDTLS_DEBUG_ECDH_Z );
-    }
-    else
+        MBEDTLS_SSL_DEBUG_ECDH(3, &ssl->handshake->ecdh_ctx,
+                               MBEDTLS_DEBUG_ECDH_Z);
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_RSA_ENABLED ||
           MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED ||
           MBEDTLS_KEY_EXCHANGE_ECDH_RSA_ENABLED ||
           MBEDTLS_KEY_EXCHANGE_ECDH_ECDSA_ENABLED */
 #if defined(MBEDTLS_KEY_EXCHANGE_PSK_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK )
-    {
-        if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_client_psk_identity" ), ret );
-            return( ret );
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_PSK) {
+        if ((ret = ssl_parse_client_psk_identity(ssl, &p, end)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_client_psk_identity"), ret);
+            return ret;
         }
 
-        if( p != end )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+        if (p != end) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
         }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
         /* For opaque PSKs, we perform the PSK-to-MS derivation automatically
          * and skip the intermediate PMS. */
-        if( ssl_use_opaque_psk( ssl ) == 1 )
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "skip PMS generation for opaque PSK" ) );
-        else
+        if (ssl_use_opaque_psk(ssl) == 1) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("skip PMS generation for opaque PSK"));
+        } else
 #endif /* MBEDTLS_USE_PSA_CRYPTO */
-        if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
-                        ciphersuite_info->key_exchange ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret );
-            return( ret );
+        if ((ret = mbedtls_ssl_psk_derive_premaster(ssl,
+                                                    ciphersuite_info->key_exchange)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_psk_derive_premaster", ret);
+            return ret;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_PSK_ENABLED */
 #if defined(MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK )
-    {
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA_PSK) {
 #if defined(MBEDTLS_SSL_ASYNC_PRIVATE)
-        if ( ssl->handshake->async_in_progress != 0 )
-        {
+        if (ssl->handshake->async_in_progress != 0) {
             /* There is an asynchronous operation in progress to
              * decrypt the encrypted premaster secret, so skip
              * directly to resuming this operation. */
-            MBEDTLS_SSL_DEBUG_MSG( 3, ( "PSK identity already parsed" ) );
+            MBEDTLS_SSL_DEBUG_MSG(3, ("PSK identity already parsed"));
             /* Update p to skip the PSK identity. ssl_parse_encrypted_pms
              * won't actually use it, but maintain p anyway for robustness. */
             p += ssl->conf->psk_identity_len + 2;
-        }
-        else
+        } else
 #endif /* MBEDTLS_SSL_ASYNC_PRIVATE */
-        if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_client_psk_identity" ), ret );
-            return( ret );
+        if ((ret = ssl_parse_client_psk_identity(ssl, &p, end)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_client_psk_identity"), ret);
+            return ret;
         }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
         /* Opaque PSKs are currently only supported for PSK-only. */
-        if( ssl_use_opaque_psk( ssl ) == 1 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "opaque PSK not supported with RSA-PSK" ) );
-            return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+        if (ssl_use_opaque_psk(ssl) == 1) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("opaque PSK not supported with RSA-PSK"));
+            return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
         }
 #endif
 
-        if( ( ret = ssl_parse_encrypted_pms( ssl, p, end, 2 ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_encrypted_pms" ), ret );
-            return( ret );
+        if ((ret = ssl_parse_encrypted_pms(ssl, p, end, 2)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_encrypted_pms"), ret);
+            return ret;
         }
 
-        if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
-                        ciphersuite_info->key_exchange ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret );
-            return( ret );
+        if ((ret = mbedtls_ssl_psk_derive_premaster(ssl,
+                                                    ciphersuite_info->key_exchange)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_psk_derive_premaster", ret);
+            return ret;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_RSA_PSK_ENABLED */
 #if defined(MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK )
-    {
-        if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_client_psk_identity" ), ret );
-            return( ret );
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_DHE_PSK) {
+        if ((ret = ssl_parse_client_psk_identity(ssl, &p, end)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_client_psk_identity"), ret);
+            return ret;
         }
-        if( ( ret = ssl_parse_client_dh_public( ssl, &p, end ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_client_dh_public" ), ret );
-            return( ret );
+        if ((ret = ssl_parse_client_dh_public(ssl, &p, end)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_client_dh_public"), ret);
+            return ret;
         }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
         /* Opaque PSKs are currently only supported for PSK-only. */
-        if( ssl_use_opaque_psk( ssl ) == 1 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "opaque PSK not supported with DHE-PSK" ) );
-            return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+        if (ssl_use_opaque_psk(ssl) == 1) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("opaque PSK not supported with DHE-PSK"));
+            return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
         }
 #endif
 
-        if( p != end )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad client key exchange" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE );
+        if (p != end) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad client key exchange"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE;
         }
 
-        if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
-                        ciphersuite_info->key_exchange ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret );
-            return( ret );
+        if ((ret = mbedtls_ssl_psk_derive_premaster(ssl,
+                                                    ciphersuite_info->key_exchange)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_psk_derive_premaster", ret);
+            return ret;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_DHE_PSK_ENABLED */
 #if defined(MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK )
-    {
-        if( ( ret = ssl_parse_client_psk_identity( ssl, &p, end ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_client_psk_identity" ), ret );
-            return( ret );
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECDHE_PSK) {
+        if ((ret = ssl_parse_client_psk_identity(ssl, &p, end)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_client_psk_identity"), ret);
+            return ret;
         }
 
-        if( ( ret = mbedtls_ecdh_read_public( &ssl->handshake->ecdh_ctx,
-                                       p, end - p ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecdh_read_public", ret );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP );
+        if ((ret = mbedtls_ecdh_read_public(&ssl->handshake->ecdh_ctx,
+                                            p, end - p)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecdh_read_public", ret);
+            return MBEDTLS_ERR_SSL_BAD_HS_CLIENT_KEY_EXCHANGE_RP;
         }
 
 #if defined(MBEDTLS_USE_PSA_CRYPTO)
         /* Opaque PSKs are currently only supported for PSK-only. */
-        if( ssl_use_opaque_psk( ssl ) == 1 )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "opaque PSK not supported with ECDHE-PSK" ) );
-            return( MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE );
+        if (ssl_use_opaque_psk(ssl) == 1) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("opaque PSK not supported with ECDHE-PSK"));
+            return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
         }
 #endif
 
-        MBEDTLS_SSL_DEBUG_ECDH( 3, &ssl->handshake->ecdh_ctx,
-                                MBEDTLS_DEBUG_ECDH_QP );
+        MBEDTLS_SSL_DEBUG_ECDH(3, &ssl->handshake->ecdh_ctx,
+                               MBEDTLS_DEBUG_ECDH_QP);
 
-        if( ( ret = mbedtls_ssl_psk_derive_premaster( ssl,
-                        ciphersuite_info->key_exchange ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_psk_derive_premaster", ret );
-            return( ret );
+        if ((ret = mbedtls_ssl_psk_derive_premaster(ssl,
+                                                    ciphersuite_info->key_exchange)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_psk_derive_premaster", ret);
+            return ret;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_ECDHE_PSK_ENABLED */
 #if defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA )
-    {
-        if( ( ret = ssl_parse_encrypted_pms( ssl, p, end, 0 ) ) != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, ( "ssl_parse_parse_encrypted_pms_secret" ), ret );
-            return( ret );
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA) {
+        if ((ret = ssl_parse_encrypted_pms(ssl, p, end, 0)) != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, ("ssl_parse_parse_encrypted_pms_secret"), ret);
+            return ret;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_RSA_ENABLED */
 #if defined(MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED)
-    if( ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE )
-    {
-        ret = mbedtls_ecjpake_read_round_two( &ssl->handshake->ecjpake_ctx,
-                                              p, end - p );
-        if( ret != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecjpake_read_round_two", ret );
-            return( MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE );
+    if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_ECJPAKE) {
+        ret = mbedtls_ecjpake_read_round_two(&ssl->handshake->ecjpake_ctx,
+                                             p, end - p);
+        if (ret != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecjpake_read_round_two", ret);
+            return MBEDTLS_ERR_SSL_BAD_HS_SERVER_KEY_EXCHANGE;
         }
 
-        ret = mbedtls_ecjpake_derive_secret( &ssl->handshake->ecjpake_ctx,
-                ssl->handshake->premaster, 32, &ssl->handshake->pmslen,
-                ssl->conf->f_rng, ssl->conf->p_rng );
-        if( ret != 0 )
-        {
-            MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ecjpake_derive_secret", ret );
-            return( ret );
+        ret = mbedtls_ecjpake_derive_secret(&ssl->handshake->ecjpake_ctx,
+                                            ssl->handshake->premaster, 32, &ssl->handshake->pmslen,
+                                            ssl->conf->f_rng, ssl->conf->p_rng);
+        if (ret != 0) {
+            MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ecjpake_derive_secret", ret);
+            return ret;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_KEY_EXCHANGE_ECJPAKE_ENABLED */
     {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+        MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
-    if( ( ret = mbedtls_ssl_derive_keys( ssl ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_derive_keys", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_derive_keys(ssl)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_derive_keys", ret);
+        return ret;
     }
 
     ssl->state++;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse client key exchange" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse client key exchange"));
 
-    return( 0 );
+    return 0;
 }
 
 #if !defined(MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_certificate_verify( mbedtls_ssl_context *ssl )
+static int ssl_parse_certificate_verify(mbedtls_ssl_context *ssl)
 {
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info =
         ssl->handshake->ciphersuite_info;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate verify" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse certificate verify"));
 
-    if( !mbedtls_ssl_ciphersuite_cert_req_allowed( ciphersuite_info ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate verify" ) );
+    if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
         ssl->state++;
-        return( 0 );
+        return 0;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-    return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+    MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+    return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
 }
 #else /* !MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED */
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_parse_certificate_verify( mbedtls_ssl_context *ssl )
+static int ssl_parse_certificate_verify(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
     size_t i, sig_len;
@@ -4520,60 +4281,54 @@
     mbedtls_md_type_t md_alg;
     const mbedtls_ssl_ciphersuite_t *ciphersuite_info =
         ssl->handshake->ciphersuite_info;
-    mbedtls_pk_context * peer_pk;
+    mbedtls_pk_context *peer_pk;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> parse certificate verify" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> parse certificate verify"));
 
-    if( !mbedtls_ssl_ciphersuite_cert_req_allowed( ciphersuite_info ) )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate verify" ) );
+    if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
         ssl->state++;
-        return( 0 );
+        return 0;
     }
 
 #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
-    if( ssl->session_negotiate->peer_cert == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate verify" ) );
+    if (ssl->session_negotiate->peer_cert == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
         ssl->state++;
-        return( 0 );
+        return 0;
     }
 #else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-    if( ssl->session_negotiate->peer_cert_digest == NULL )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= skip parse certificate verify" ) );
+    if (ssl->session_negotiate->peer_cert_digest == NULL) {
+        MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
         ssl->state++;
-        return( 0 );
+        return 0;
     }
 #endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
 
     /* Read the message without adding it to the checksum */
-    ret = mbedtls_ssl_read_record( ssl, 0 /* no checksum update */ );
-    if( 0 != ret )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, ( "mbedtls_ssl_read_record" ), ret );
-        return( ret );
+    ret = mbedtls_ssl_read_record(ssl, 0 /* no checksum update */);
+    if (0 != ret) {
+        MBEDTLS_SSL_DEBUG_RET(1, ("mbedtls_ssl_read_record"), ret);
+        return ret;
     }
 
     ssl->state++;
 
     /* Process the message contents */
-    if( ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ||
-        ssl->in_msg[0] != MBEDTLS_SSL_HS_CERTIFICATE_VERIFY )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
+    if (ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ||
+        ssl->in_msg[0] != MBEDTLS_SSL_HS_CERTIFICATE_VERIFY) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad certificate verify message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY;
     }
 
-    i = mbedtls_ssl_hs_hdr_len( ssl );
+    i = mbedtls_ssl_hs_hdr_len(ssl);
 
 #if !defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
     peer_pk = &ssl->handshake->peer_pubkey;
 #else /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-    if( ssl->session_negotiate->peer_cert == NULL )
-    {
+    if (ssl->session_negotiate->peer_cert == NULL) {
         /* Should never happen */
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
     peer_pk = &ssl->session_negotiate->peer_cert->pk;
 #endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
@@ -4586,46 +4341,41 @@
      */
 #if defined(MBEDTLS_SSL_PROTO_SSL3) || defined(MBEDTLS_SSL_PROTO_TLS1) || \
     defined(MBEDTLS_SSL_PROTO_TLS1_1)
-    if( ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_3 )
-    {
+    if (ssl->minor_ver != MBEDTLS_SSL_MINOR_VERSION_3) {
         md_alg = MBEDTLS_MD_NONE;
         hashlen = 36;
 
         /* For ECDSA, use SHA-1, not MD-5 + SHA-1 */
-        if( mbedtls_pk_can_do( peer_pk, MBEDTLS_PK_ECDSA ) )
-        {
+        if (mbedtls_pk_can_do(peer_pk, MBEDTLS_PK_ECDSA)) {
             hash_start += 16;
             hashlen -= 16;
             md_alg = MBEDTLS_MD_SHA1;
         }
-    }
-    else
+    } else
 #endif /* MBEDTLS_SSL_PROTO_SSL3 || MBEDTLS_SSL_PROTO_TLS1 ||
           MBEDTLS_SSL_PROTO_TLS1_1 */
 #if defined(MBEDTLS_SSL_PROTO_TLS1_2)
-    if( ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3 )
-    {
-        if( i + 2 > ssl->in_hslen )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
+    if (ssl->minor_ver == MBEDTLS_SSL_MINOR_VERSION_3) {
+        if (i + 2 > ssl->in_hslen) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("bad certificate verify message"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY;
         }
 
         /*
          * Hash
          */
-        md_alg = mbedtls_ssl_md_alg_from_hash( ssl->in_msg[i] );
+        md_alg = mbedtls_ssl_md_alg_from_hash(ssl->in_msg[i]);
 
-        if( md_alg == MBEDTLS_MD_NONE || mbedtls_ssl_set_calc_verify_md( ssl, ssl->in_msg[i] ) )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "peer not adhering to requested sig_alg"
-                                " for verify message" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
+        if (md_alg == MBEDTLS_MD_NONE || mbedtls_ssl_set_calc_verify_md(ssl, ssl->in_msg[i])) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("peer not adhering to requested sig_alg"
+                                      " for verify message"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY;
         }
 
 #if !defined(MBEDTLS_MD_SHA1)
-        if( MBEDTLS_MD_SHA1 == md_alg )
+        if (MBEDTLS_MD_SHA1 == md_alg) {
             hash_start += 16;
+        }
 #endif
 
         /* Info from md_alg will be used instead */
@@ -4636,78 +4386,72 @@
         /*
          * Signature
          */
-        if( ( pk_alg = mbedtls_ssl_pk_alg_from_sig( ssl->in_msg[i] ) )
-                        == MBEDTLS_PK_NONE )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "peer not adhering to requested sig_alg"
-                                " for verify message" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
+        if ((pk_alg = mbedtls_ssl_pk_alg_from_sig(ssl->in_msg[i]))
+            == MBEDTLS_PK_NONE) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("peer not adhering to requested sig_alg"
+                                      " for verify message"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY;
         }
 
         /*
          * Check the certificate's key type matches the signature alg
          */
-        if( !mbedtls_pk_can_do( peer_pk, pk_alg ) )
-        {
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "sig_alg doesn't match cert key" ) );
-            return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
+        if (!mbedtls_pk_can_do(peer_pk, pk_alg)) {
+            MBEDTLS_SSL_DEBUG_MSG(1, ("sig_alg doesn't match cert key"));
+            return MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY;
         }
 
         i++;
-    }
-    else
+    } else
 #endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
     {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "should never happen" ) );
-        return( MBEDTLS_ERR_SSL_INTERNAL_ERROR );
+        MBEDTLS_SSL_DEBUG_MSG(1, ("should never happen"));
+        return MBEDTLS_ERR_SSL_INTERNAL_ERROR;
     }
 
-    if( i + 2 > ssl->in_hslen )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
+    if (i + 2 > ssl->in_hslen) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad certificate verify message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY;
     }
 
-    sig_len = ( ssl->in_msg[i] << 8 ) | ssl->in_msg[i+1];
+    sig_len = (ssl->in_msg[i] << 8) | ssl->in_msg[i+1];
     i += 2;
 
-    if( i + sig_len != ssl->in_hslen )
-    {
-        MBEDTLS_SSL_DEBUG_MSG( 1, ( "bad certificate verify message" ) );
-        return( MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY );
+    if (i + sig_len != ssl->in_hslen) {
+        MBEDTLS_SSL_DEBUG_MSG(1, ("bad certificate verify message"));
+        return MBEDTLS_ERR_SSL_BAD_HS_CERTIFICATE_VERIFY;
     }
 
     /* Calculate hash and verify signature */
     {
         size_t dummy_hlen;
-        ssl->handshake->calc_verify( ssl, hash, &dummy_hlen );
+        ssl->handshake->calc_verify(ssl, hash, &dummy_hlen);
     }
 
-    if( ( ret = mbedtls_pk_verify( peer_pk,
-                           md_alg, hash_start, hashlen,
-                           ssl->in_msg + i, sig_len ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_pk_verify", ret );
-        return( ret );
+    if ((ret = mbedtls_pk_verify(peer_pk,
+                                 md_alg, hash_start, hashlen,
+                                 ssl->in_msg + i, sig_len)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_pk_verify", ret);
+        return ret;
     }
 
-    mbedtls_ssl_update_handshake_status( ssl );
+    mbedtls_ssl_update_handshake_status(ssl);
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= parse certificate verify" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse certificate verify"));
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_KEY_EXCHANGE_CERT_REQ_ALLOWED_ENABLED */
 
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
 MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_write_new_session_ticket( mbedtls_ssl_context *ssl )
+static int ssl_write_new_session_ticket(mbedtls_ssl_context *ssl)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
     size_t tlen;
     uint32_t lifetime;
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "=> write new session ticket" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("=> write new session ticket"));
 
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_NEW_SESSION_TICKET;
@@ -4723,18 +4467,17 @@
      * 10 .  9+n ticket content
      */
 
-    if( ( ret = ssl->conf->f_ticket_write( ssl->conf->p_ticket,
-                                ssl->session_negotiate,
-                                ssl->out_msg + 10,
-                                ssl->out_msg + MBEDTLS_SSL_OUT_CONTENT_LEN,
-                                &tlen, &lifetime ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_ticket_write", ret );
+    if ((ret = ssl->conf->f_ticket_write(ssl->conf->p_ticket,
+                                         ssl->session_negotiate,
+                                         ssl->out_msg + 10,
+                                         ssl->out_msg + MBEDTLS_SSL_OUT_CONTENT_LEN,
+                                         &tlen, &lifetime)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_ticket_write", ret);
         tlen = 0;
     }
 
-    MBEDTLS_PUT_UINT32_BE( lifetime, ssl->out_msg, 4 );
-    MBEDTLS_PUT_UINT16_BE( tlen, ssl->out_msg, 8 );
+    MBEDTLS_PUT_UINT32_BE(lifetime, ssl->out_msg, 4);
+    MBEDTLS_PUT_UINT16_BE(tlen, ssl->out_msg, 8);
     ssl->out_msglen = 10 + tlen;
 
     /*
@@ -4743,44 +4486,44 @@
      */
     ssl->handshake->new_session_ticket = 0;
 
-    if( ( ret = mbedtls_ssl_write_handshake_msg( ssl ) ) != 0 )
-    {
-        MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_write_handshake_msg", ret );
-        return( ret );
+    if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
+        MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
+        return ret;
     }
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write new session ticket" ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("<= write new session ticket"));
 
-    return( 0 );
+    return 0;
 }
 #endif /* MBEDTLS_SSL_SESSION_TICKETS */
 
 /*
  * SSL handshake -- server side -- single step
  */
-int mbedtls_ssl_handshake_server_step( mbedtls_ssl_context *ssl )
+int mbedtls_ssl_handshake_server_step(mbedtls_ssl_context *ssl)
 {
     int ret = 0;
 
-    if( ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER || ssl->handshake == NULL )
-        return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+    if (ssl->state == MBEDTLS_SSL_HANDSHAKE_OVER || ssl->handshake == NULL) {
+        return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+    }
 
-    MBEDTLS_SSL_DEBUG_MSG( 2, ( "server state: %d", ssl->state ) );
+    MBEDTLS_SSL_DEBUG_MSG(2, ("server state: %d", ssl->state));
 
-    if( ( ret = mbedtls_ssl_flush_output( ssl ) ) != 0 )
-        return( ret );
+    if ((ret = mbedtls_ssl_flush_output(ssl)) != 0) {
+        return ret;
+    }
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
-    if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
-        ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING )
-    {
-        if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
-            return( ret );
+    if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
+        ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING) {
+        if ((ret = mbedtls_ssl_flight_transmit(ssl)) != 0) {
+            return ret;
+        }
     }
 #endif /* MBEDTLS_SSL_PROTO_DTLS */
 
-    switch( ssl->state )
-    {
+    switch (ssl->state) {
         case MBEDTLS_SSL_HELLO_REQUEST:
             ssl->state = MBEDTLS_SSL_CLIENT_HELLO;
             break;
@@ -4789,12 +4532,12 @@
          *  <==   ClientHello
          */
         case MBEDTLS_SSL_CLIENT_HELLO:
-            ret = ssl_parse_client_hello( ssl );
+            ret = ssl_parse_client_hello(ssl);
             break;
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
         case MBEDTLS_SSL_SERVER_HELLO_VERIFY_REQUEST_SENT:
-            return( MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED );
+            return MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED;
 #endif
 
         /*
@@ -4805,23 +4548,23 @@
          *        ServerHelloDone
          */
         case MBEDTLS_SSL_SERVER_HELLO:
-            ret = ssl_write_server_hello( ssl );
+            ret = ssl_write_server_hello(ssl);
             break;
 
         case MBEDTLS_SSL_SERVER_CERTIFICATE:
-            ret = mbedtls_ssl_write_certificate( ssl );
+            ret = mbedtls_ssl_write_certificate(ssl);
             break;
 
         case MBEDTLS_SSL_SERVER_KEY_EXCHANGE:
-            ret = ssl_write_server_key_exchange( ssl );
+            ret = ssl_write_server_key_exchange(ssl);
             break;
 
         case MBEDTLS_SSL_CERTIFICATE_REQUEST:
-            ret = ssl_write_certificate_request( ssl );
+            ret = ssl_write_certificate_request(ssl);
             break;
 
         case MBEDTLS_SSL_SERVER_HELLO_DONE:
-            ret = ssl_write_server_hello_done( ssl );
+            ret = ssl_write_server_hello_done(ssl);
             break;
 
         /*
@@ -4832,23 +4575,23 @@
          *        Finished
          */
         case MBEDTLS_SSL_CLIENT_CERTIFICATE:
-            ret = mbedtls_ssl_parse_certificate( ssl );
+            ret = mbedtls_ssl_parse_certificate(ssl);
             break;
 
         case MBEDTLS_SSL_CLIENT_KEY_EXCHANGE:
-            ret = ssl_parse_client_key_exchange( ssl );
+            ret = ssl_parse_client_key_exchange(ssl);
             break;
 
         case MBEDTLS_SSL_CERTIFICATE_VERIFY:
-            ret = ssl_parse_certificate_verify( ssl );
+            ret = ssl_parse_certificate_verify(ssl);
             break;
 
         case MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC:
-            ret = mbedtls_ssl_parse_change_cipher_spec( ssl );
+            ret = mbedtls_ssl_parse_change_cipher_spec(ssl);
             break;
 
         case MBEDTLS_SSL_CLIENT_FINISHED:
-            ret = mbedtls_ssl_parse_finished( ssl );
+            ret = mbedtls_ssl_parse_finished(ssl);
             break;
 
         /*
@@ -4858,31 +4601,31 @@
          */
         case MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC:
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
-            if( ssl->handshake->new_session_ticket != 0 )
-                ret = ssl_write_new_session_ticket( ssl );
-            else
+            if (ssl->handshake->new_session_ticket != 0) {
+                ret = ssl_write_new_session_ticket(ssl);
+            } else
 #endif
-                ret = mbedtls_ssl_write_change_cipher_spec( ssl );
+            ret = mbedtls_ssl_write_change_cipher_spec(ssl);
             break;
 
         case MBEDTLS_SSL_SERVER_FINISHED:
-            ret = mbedtls_ssl_write_finished( ssl );
+            ret = mbedtls_ssl_write_finished(ssl);
             break;
 
         case MBEDTLS_SSL_FLUSH_BUFFERS:
-            MBEDTLS_SSL_DEBUG_MSG( 2, ( "handshake: done" ) );
+            MBEDTLS_SSL_DEBUG_MSG(2, ("handshake: done"));
             ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP;
             break;
 
         case MBEDTLS_SSL_HANDSHAKE_WRAPUP:
-            mbedtls_ssl_handshake_wrapup( ssl );
+            mbedtls_ssl_handshake_wrapup(ssl);
             break;
 
         default:
-            MBEDTLS_SSL_DEBUG_MSG( 1, ( "invalid state %d", ssl->state ) );
-            return( MBEDTLS_ERR_SSL_BAD_INPUT_DATA );
+            MBEDTLS_SSL_DEBUG_MSG(1, ("invalid state %d", ssl->state));
+            return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
     }
 
-    return( ret );
+    return ret;
 }
 #endif /* MBEDTLS_SSL_SRV_C */