/*
- * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
+ * Copyright 2016-2017 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
/*
* Parse the client's renegotiation binding and abort if it's not right
*/
-int tls_parse_clienthello_renegotiate(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_renegotiate(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
unsigned int ilen;
const unsigned char *data;
/* Parse the length byte */
if (!PACKET_get_1(pkt, &ilen)
|| !PACKET_get_bytes(pkt, &data, ilen)) {
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_RENEGOTIATE,
- SSL_R_RENEGOTIATION_ENCODING_ERR);
- *al = SSL_AD_ILLEGAL_PARAMETER;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_RENEGOTIATE,
+ SSL_R_RENEGOTIATION_ENCODING_ERR);
return 0;
}
/* Check that the extension matches */
if (ilen != s->s3->previous_client_finished_len) {
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_RENEGOTIATE,
- SSL_R_RENEGOTIATION_MISMATCH);
- *al = SSL_AD_HANDSHAKE_FAILURE;
+ SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_TLS_PARSE_CTOS_RENEGOTIATE,
+ SSL_R_RENEGOTIATION_MISMATCH);
return 0;
}
if (memcmp(data, s->s3->previous_client_finished,
s->s3->previous_client_finished_len)) {
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_RENEGOTIATE,
- SSL_R_RENEGOTIATION_MISMATCH);
- *al = SSL_AD_HANDSHAKE_FAILURE;
+ SSLfatal(s, SSL_AD_HANDSHAKE_FAILURE, SSL_F_TLS_PARSE_CTOS_RENEGOTIATE,
+ SSL_R_RENEGOTIATION_MISMATCH);
return 0;
}
return 1;
}
-int tls_parse_clienthello_server_name(SSL *s, PACKET *pkt, int *al)
+/*-
+ * The servername extension is treated as follows:
+ *
+ * - Only the hostname type is supported with a maximum length of 255.
+ * - The servername is rejected if too long or if it contains zeros,
+ * in which case an fatal alert is generated.
+ * - The servername field is maintained together with the session cache.
+ * - When a session is resumed, the servername call back invoked in order
+ * to allow the application to position itself to the right context.
+ * - The servername is acknowledged if it is new for a session or when
+ * it is identical to a previously used for the same session.
+ * Applications can control the behaviour. They can at any time
+ * set a 'desirable' servername for a new SSL object. This can be the
+ * case for example with HTTPS when a Host: header field is received and
+ * a renegotiation is requested. In this case, a possible servername
+ * presented in the new client hello is only acknowledged if it matches
+ * the value of the Host: field.
+ * - Applications must use SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
+ * if they provide for changing an explicit servername context for the
+ * session, i.e. when the session has been established with a servername
+ * extension.
+ * - On session reconnect, the servername extension may be absent.
+ */
+int tls_parse_ctos_server_name(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
unsigned int servname_type;
PACKET sni, hostname;
- /*-
- * The servername extension is treated as follows:
- *
- * - Only the hostname type is supported with a maximum length of 255.
- * - The servername is rejected if too long or if it contains zeros,
- * in which case an fatal alert is generated.
- * - The servername field is maintained together with the session cache.
- * - When a session is resumed, the servername call back invoked in order
- * to allow the application to position itself to the right context.
- * - The servername is acknowledged if it is new for a session or when
- * it is identical to a previously used for the same session.
- * Applications can control the behaviour. They can at any time
- * set a 'desirable' servername for a new SSL object. This can be the
- * case for example with HTTPS when a Host: header field is received and
- * a renegotiation is requested. In this case, a possible servername
- * presented in the new client hello is only acknowledged if it matches
- * the value of the Host: field.
- * - Applications must use SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION
- * if they provide for changing an explicit servername context for the
- * session, i.e. when the session has been established with a servername
- * extension.
- * - On session reconnect, the servername extension may be absent.
- *
- */
if (!PACKET_as_length_prefixed_2(pkt, &sni)
/* ServerNameList must be at least 1 byte long. */
|| PACKET_remaining(&sni) == 0) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_SERVER_NAME,
+ SSL_R_BAD_EXTENSION);
return 0;
}
/*
- * Although the server_name extension was intended to be
- * extensible to new name types, RFC 4366 defined the
- * syntax inextensibility and OpenSSL 1.0.x parses it as
- * such.
+ * Although the intent was for server_name to be extensible, RFC 4366
+ * was not clear about it; and so OpenSSL among other implementations,
+ * always and only allows a 'host_name' name types.
* RFC 6066 corrected the mistake but adding new name types
* is nevertheless no longer feasible, so act as if no other
* SNI types can exist, to simplify parsing.
if (!PACKET_get_1(&sni, &servname_type)
|| servname_type != TLSEXT_NAMETYPE_host_name
|| !PACKET_as_length_prefixed_2(&sni, &hostname)) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_SERVER_NAME,
+ SSL_R_BAD_EXTENSION);
return 0;
}
if (!s->hit) {
if (PACKET_remaining(&hostname) > TLSEXT_MAXLEN_host_name) {
- *al = TLS1_AD_UNRECOGNIZED_NAME;
+ SSLfatal(s, SSL_AD_UNRECOGNIZED_NAME,
+ SSL_F_TLS_PARSE_CTOS_SERVER_NAME,
+ SSL_R_BAD_EXTENSION);
return 0;
}
if (PACKET_contains_zero_byte(&hostname)) {
- *al = TLS1_AD_UNRECOGNIZED_NAME;
+ SSLfatal(s, SSL_AD_UNRECOGNIZED_NAME,
+ SSL_F_TLS_PARSE_CTOS_SERVER_NAME,
+ SSL_R_BAD_EXTENSION);
return 0;
}
- if (!PACKET_strndup(&hostname, &s->session->tlsext_hostname)) {
- *al = TLS1_AD_INTERNAL_ERROR;
+ OPENSSL_free(s->session->ext.hostname);
+ s->session->ext.hostname = NULL;
+ if (!PACKET_strndup(&hostname, &s->session->ext.hostname)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_CTOS_SERVER_NAME,
+ ERR_R_INTERNAL_ERROR);
return 0;
}
* TODO(openssl-team): if the SNI doesn't match, we MUST
* fall back to a full handshake.
*/
- s->servername_done = s->session->tlsext_hostname
- && PACKET_equal(&hostname, s->session->tlsext_hostname,
- strlen(s->session->tlsext_hostname));
+ s->servername_done = s->session->ext.hostname
+ && PACKET_equal(&hostname, s->session->ext.hostname,
+ strlen(s->session->ext.hostname));
+
+ if (!s->servername_done && s->session->ext.hostname != NULL)
+ s->ext.early_data_ok = 0;
+ }
+
+ return 1;
+}
+
+int tls_parse_ctos_maxfragmentlen(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
+{
+ unsigned int value;
+
+ if (PACKET_remaining(pkt) != 1 || !PACKET_get_1(pkt, &value)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_MAXFRAGMENTLEN,
+ SSL_R_BAD_EXTENSION);
+ return 0;
+ }
+
+ /* Received |value| should be a valid max-fragment-length code. */
+ if (!IS_MAX_FRAGMENT_LENGTH_EXT_VALID(value)) {
+ SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
+ SSL_F_TLS_PARSE_CTOS_MAXFRAGMENTLEN,
+ SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH);
+ return 0;
}
+ /*
+ * RFC 6066: The negotiated length applies for the duration of the session
+ * including session resumptions.
+ * We should receive the same code as in resumed session !
+ */
+ if (s->hit && s->session->ext.max_fragment_len_mode != value) {
+ SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
+ SSL_F_TLS_PARSE_CTOS_MAXFRAGMENTLEN,
+ SSL_R_SSL3_EXT_INVALID_MAX_FRAGMENT_LENGTH);
+ return 0;
+ }
+
+ /*
+ * Store it in session, so it'll become binding for us
+ * and we'll include it in a next Server Hello.
+ */
+ s->session->ext.max_fragment_len_mode = value;
return 1;
}
#ifndef OPENSSL_NO_SRP
-int tls_parse_clienthello_srp(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_srp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
PACKET srp_I;
if (!PACKET_as_length_prefixed_1(pkt, &srp_I)
|| PACKET_contains_zero_byte(&srp_I)) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_SRP,
+ SSL_R_BAD_EXTENSION);
return 0;
}
* upon resumption. Instead, we MUST ignore the login.
*/
if (!PACKET_strndup(&srp_I, &s->srp_ctx.login)) {
- *al = TLS1_AD_INTERNAL_ERROR;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_CTOS_SRP,
+ ERR_R_INTERNAL_ERROR);
return 0;
}
#endif
#ifndef OPENSSL_NO_EC
-int tls_parse_clienthello_ec_pt_formats(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_ec_pt_formats(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
PACKET ec_point_format_list;
if (!PACKET_as_length_prefixed_1(pkt, &ec_point_format_list)
|| PACKET_remaining(&ec_point_format_list) == 0) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_EC_PT_FORMATS,
+ SSL_R_BAD_EXTENSION);
return 0;
}
if (!s->hit) {
if (!PACKET_memdup(&ec_point_format_list,
- &s->session->tlsext_ecpointformatlist,
- &s->session->tlsext_ecpointformatlist_length)) {
- *al = TLS1_AD_INTERNAL_ERROR;
+ &s->session->ext.ecpointformats,
+ &s->session->ext.ecpointformats_len)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_EC_PT_FORMATS, ERR_R_INTERNAL_ERROR);
return 0;
}
}
}
#endif /* OPENSSL_NO_EC */
-int tls_parse_clienthello_session_ticket(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_session_ticket(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
- if (s->tls_session_ticket_ext_cb &&
- !s->tls_session_ticket_ext_cb(s, PACKET_data(pkt),
- PACKET_remaining(pkt),
- s->tls_session_ticket_ext_cb_arg)) {
- *al = TLS1_AD_INTERNAL_ERROR;
+ if (s->ext.session_ticket_cb &&
+ !s->ext.session_ticket_cb(s, PACKET_data(pkt),
+ PACKET_remaining(pkt),
+ s->ext.session_ticket_cb_arg)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_SESSION_TICKET, ERR_R_INTERNAL_ERROR);
return 0;
}
return 1;
}
-int tls_parse_clienthello_sig_algs(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_sig_algs(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
PACKET supported_sig_algs;
if (!PACKET_as_length_prefixed_2(pkt, &supported_sig_algs)
- || (PACKET_remaining(&supported_sig_algs) % 2) != 0
|| PACKET_remaining(&supported_sig_algs) == 0) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_SIG_ALGS, SSL_R_BAD_EXTENSION);
return 0;
}
- if (!s->hit && !tls1_save_sigalgs(s, PACKET_data(&supported_sig_algs),
- PACKET_remaining(&supported_sig_algs))) {
- *al = TLS1_AD_INTERNAL_ERROR;
+ if (!s->hit && !tls1_save_sigalgs(s, &supported_sig_algs)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_SIG_ALGS, SSL_R_BAD_EXTENSION);
return 0;
}
return 1;
}
-int tls_parse_clienthello_status_request(SSL *s, PACKET *pkt, int *al)
+#ifndef OPENSSL_NO_OCSP
+int tls_parse_ctos_status_request(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
- if (!PACKET_get_1(pkt, (unsigned int *)&s->tlsext_status_type)) {
- *al = SSL_AD_DECODE_ERROR;
+ PACKET responder_id_list, exts;
+
+ /* Not defined if we get one of these in a client Certificate */
+ if (x != NULL)
+ return 1;
+
+ if (!PACKET_get_1(pkt, (unsigned int *)&s->ext.status_type)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, SSL_R_BAD_EXTENSION);
return 0;
}
-#ifndef OPENSSL_NO_OCSP
- if (s->tlsext_status_type == TLSEXT_STATUSTYPE_ocsp) {
- const unsigned char *ext_data;
- PACKET responder_id_list, exts;
- if (!PACKET_get_length_prefixed_2 (pkt, &responder_id_list)) {
- *al = SSL_AD_DECODE_ERROR;
- return 0;
- }
+ if (s->ext.status_type != TLSEXT_STATUSTYPE_ocsp) {
/*
- * We remove any OCSP_RESPIDs from a previous handshake
- * to prevent unbounded memory growth - CVE-2016-6304
+ * We don't know what to do with any other type so ignore it.
*/
- sk_OCSP_RESPID_pop_free(s->tlsext_ocsp_ids, OCSP_RESPID_free);
- if (PACKET_remaining(&responder_id_list) > 0) {
- s->tlsext_ocsp_ids = sk_OCSP_RESPID_new_null();
- if (s->tlsext_ocsp_ids == NULL) {
- *al = SSL_AD_INTERNAL_ERROR;
- return 0;
- }
- } else {
- s->tlsext_ocsp_ids = NULL;
+ s->ext.status_type = TLSEXT_STATUSTYPE_nothing;
+ return 1;
+ }
+
+ if (!PACKET_get_length_prefixed_2 (pkt, &responder_id_list)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
+
+ /*
+ * We remove any OCSP_RESPIDs from a previous handshake
+ * to prevent unbounded memory growth - CVE-2016-6304
+ */
+ sk_OCSP_RESPID_pop_free(s->ext.ocsp.ids, OCSP_RESPID_free);
+ if (PACKET_remaining(&responder_id_list) > 0) {
+ s->ext.ocsp.ids = sk_OCSP_RESPID_new_null();
+ if (s->ext.ocsp.ids == NULL) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, ERR_R_MALLOC_FAILURE);
+ return 0;
}
+ } else {
+ s->ext.ocsp.ids = NULL;
+ }
- while (PACKET_remaining(&responder_id_list) > 0) {
- OCSP_RESPID *id;
- PACKET responder_id;
- const unsigned char *id_data;
+ while (PACKET_remaining(&responder_id_list) > 0) {
+ OCSP_RESPID *id;
+ PACKET responder_id;
+ const unsigned char *id_data;
- if (!PACKET_get_length_prefixed_2(&responder_id_list,
- &responder_id)
- || PACKET_remaining(&responder_id) == 0) {
- *al = SSL_AD_DECODE_ERROR;
- return 0;
- }
+ if (!PACKET_get_length_prefixed_2(&responder_id_list, &responder_id)
+ || PACKET_remaining(&responder_id) == 0) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
- id_data = PACKET_data(&responder_id);
- /* TODO(size_t): Convert d2i_* to size_t */
- id = d2i_OCSP_RESPID(NULL, &id_data,
- (int)PACKET_remaining(&responder_id));
- if (id == NULL) {
- *al = SSL_AD_DECODE_ERROR;
- return 0;
- }
+ id_data = PACKET_data(&responder_id);
+ /* TODO(size_t): Convert d2i_* to size_t */
+ id = d2i_OCSP_RESPID(NULL, &id_data,
+ (int)PACKET_remaining(&responder_id));
+ if (id == NULL) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
- if (id_data != PACKET_end(&responder_id)) {
- OCSP_RESPID_free(id);
- *al = SSL_AD_DECODE_ERROR;
- return 0;
- }
+ if (id_data != PACKET_end(&responder_id)) {
+ OCSP_RESPID_free(id);
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, SSL_R_BAD_EXTENSION);
- if (!sk_OCSP_RESPID_push(s->tlsext_ocsp_ids, id)) {
- OCSP_RESPID_free(id);
- *al = SSL_AD_INTERNAL_ERROR;
- return 0;
- }
+ return 0;
}
- /* Read in request_extensions */
- if (!PACKET_as_length_prefixed_2(pkt, &exts)) {
- *al = SSL_AD_DECODE_ERROR;
+ if (!sk_OCSP_RESPID_push(s->ext.ocsp.ids, id)) {
+ OCSP_RESPID_free(id);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, ERR_R_INTERNAL_ERROR);
+
return 0;
}
+ }
- if (PACKET_remaining(&exts) > 0) {
- ext_data = PACKET_data(&exts);
- sk_X509_EXTENSION_pop_free(s->tlsext_ocsp_exts,
- X509_EXTENSION_free);
- s->tlsext_ocsp_exts =
- d2i_X509_EXTENSIONS(NULL, &ext_data,
- (int)PACKET_remaining(&exts));
- if (s->tlsext_ocsp_exts == NULL || ext_data != PACKET_end(&exts)) {
- *al = SSL_AD_DECODE_ERROR;
- return 0;
- }
+ /* Read in request_extensions */
+ if (!PACKET_as_length_prefixed_2(pkt, &exts)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
+
+ if (PACKET_remaining(&exts) > 0) {
+ const unsigned char *ext_data = PACKET_data(&exts);
+
+ sk_X509_EXTENSION_pop_free(s->ext.ocsp.exts,
+ X509_EXTENSION_free);
+ s->ext.ocsp.exts =
+ d2i_X509_EXTENSIONS(NULL, &ext_data, (int)PACKET_remaining(&exts));
+ if (s->ext.ocsp.exts == NULL || ext_data != PACKET_end(&exts)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_STATUS_REQUEST, SSL_R_BAD_EXTENSION);
+ return 0;
}
- } else
-#endif
- {
- /*
- * We don't know what to do with any other type so ignore it.
- */
- s->tlsext_status_type = -1;
}
return 1;
}
+#endif
#ifndef OPENSSL_NO_NEXTPROTONEG
-int tls_parse_clienthello_npn(SSL *s, PACKET *pkt, int *al)
-{
- if (s->s3->tmp.finish_md_len == 0) {
- /*-
- * We shouldn't accept this extension on a
- * renegotiation.
- *
- * s->new_session will be set on renegotiation, but we
- * probably shouldn't rely that it couldn't be set on
- * the initial renegotiation too in certain cases (when
- * there's some other reason to disallow resuming an
- * earlier session -- the current code won't be doing
- * anything like that, but this might change).
- *
- * A valid sign that there's been a previous handshake
- * in this connection is if s->s3->tmp.finish_md_len >
- * 0. (We are talking about a check that will happen
- * in the Hello protocol round, well before a new
- * Finished message could have been computed.)
- */
- s->s3->next_proto_neg_seen = 1;
- }
+int tls_parse_ctos_npn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
+{
+ /*
+ * We shouldn't accept this extension on a
+ * renegotiation.
+ */
+ if (SSL_IS_FIRST_HANDSHAKE(s))
+ s->s3->npn_seen = 1;
return 1;
}
#endif
/*
- * Save the ALPN extension in a ClientHello.
- * pkt: the contents of the ALPN extension, not including type and length.
- * al: a pointer to the alert value to send in the event of a failure.
- * returns: 1 on success, 0 on error.
+ * Save the ALPN extension in a ClientHello.|pkt| holds the contents of the ALPN
+ * extension, not including type and length. |al| is a pointer to the alert
+ * value to send in the event of a failure. Returns: 1 on success, 0 on error.
*/
-int tls_parse_clienthello_alpn(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_alpn(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
PACKET protocol_list, save_protocol_list, protocol;
- if (s->s3->tmp.finish_md_len != 0)
+ if (!SSL_IS_FIRST_HANDSHAKE(s))
return 1;
if (!PACKET_as_length_prefixed_2(pkt, &protocol_list)
|| PACKET_remaining(&protocol_list) < 2) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_ALPN,
+ SSL_R_BAD_EXTENSION);
return 0;
}
/* Protocol names can't be empty. */
if (!PACKET_get_length_prefixed_1(&protocol_list, &protocol)
|| PACKET_remaining(&protocol) == 0) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_ALPN,
+ SSL_R_BAD_EXTENSION);
return 0;
}
} while (PACKET_remaining(&protocol_list) != 0);
+ OPENSSL_free(s->s3->alpn_proposed);
+ s->s3->alpn_proposed = NULL;
+ s->s3->alpn_proposed_len = 0;
if (!PACKET_memdup(&save_protocol_list,
&s->s3->alpn_proposed, &s->s3->alpn_proposed_len)) {
- *al = TLS1_AD_INTERNAL_ERROR;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_CTOS_ALPN,
+ ERR_R_INTERNAL_ERROR);
return 0;
}
}
#ifndef OPENSSL_NO_SRTP
-int tls_parse_clienthello_use_srtp(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_use_srtp(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
- SRTP_PROTECTION_PROFILE *sprof;
STACK_OF(SRTP_PROTECTION_PROFILE) *srvr;
unsigned int ct, mki_len, id;
int i, srtp_pref;
return 1;
/* Pull off the length of the cipher suite list and check it is even */
- if (!PACKET_get_net_2(pkt, &ct)
- || (ct & 1) != 0 || !PACKET_get_sub_packet(pkt, &subpkt, ct)) {
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_USE_SRTP,
+ if (!PACKET_get_net_2(pkt, &ct) || (ct & 1) != 0
+ || !PACKET_get_sub_packet(pkt, &subpkt, ct)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_USE_SRTP,
SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al = SSL_AD_DECODE_ERROR;
return 0;
}
while (PACKET_remaining(&subpkt)) {
if (!PACKET_get_net_2(&subpkt, &id)) {
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_USE_SRTP,
- SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_USE_SRTP,
+ SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
return 0;
}
* does nothing.
*/
for (i = 0; i < srtp_pref; i++) {
- sprof = sk_SRTP_PROTECTION_PROFILE_value(srvr, i);
+ SRTP_PROTECTION_PROFILE *sprof =
+ sk_SRTP_PROTECTION_PROFILE_value(srvr, i);
+
if (sprof->id == id) {
s->srtp_profile = sprof;
srtp_pref = i;
}
}
- /*
- * Now extract the MKI value as a sanity check, but discard it for now
- */
+ /* Now extract the MKI value as a sanity check, but discard it for now */
if (!PACKET_get_1(pkt, &mki_len)) {
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_USE_SRTP,
- SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_USE_SRTP,
+ SSL_R_BAD_SRTP_PROTECTION_PROFILE_LIST);
return 0;
}
if (!PACKET_forward(pkt, mki_len)
|| PACKET_remaining(pkt)) {
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_USE_SRTP, SSL_R_BAD_SRTP_MKI_VALUE);
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_USE_SRTP,
+ SSL_R_BAD_SRTP_MKI_VALUE);
return 0;
}
}
#endif
-int tls_parse_clienthello_etm(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_etm(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
if (!(s->options & SSL_OP_NO_ENCRYPT_THEN_MAC))
- s->s3->flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC;
+ s->ext.use_etm = 1;
return 1;
}
/*
- * Checks a list of |groups| to determine if the |group_id| is in it. If it is
- * and |checkallow| is 1 then additionally check if the group is allowed to be
- * used. Returns 1 if the group is in the list (and allowed if |checkallow| is
- * 1) or 0 otherwise.
+ * Process a psk_kex_modes extension received in the ClientHello. |pkt| contains
+ * the raw PACKET data for the extension. Returns 1 on success or 0 on failure.
+ * If a failure occurs then |*al| is set to an appropriate alert value.
*/
-static int check_in_list(SSL *s, unsigned int group_id,
- const unsigned char *groups, size_t num_groups,
- int checkallow)
+int tls_parse_ctos_psk_kex_modes(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
- size_t i;
-
- if (groups == NULL || num_groups == 0)
+#ifndef OPENSSL_NO_TLS1_3
+ PACKET psk_kex_modes;
+ unsigned int mode;
+
+ if (!PACKET_as_length_prefixed_1(pkt, &psk_kex_modes)
+ || PACKET_remaining(&psk_kex_modes) == 0) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_PSK_KEX_MODES,
+ SSL_R_BAD_EXTENSION);
return 0;
+ }
- for (i = 0; i < num_groups; i++, groups += 2) {
- unsigned int share_id = (groups[0] << 8) | (groups[1]);
-
- if (group_id == share_id
- && (!checkallow || tls_curve_allowed(s, groups,
- SSL_SECOP_CURVE_CHECK))) {
- break;
- }
+ while (PACKET_get_1(&psk_kex_modes, &mode)) {
+ if (mode == TLSEXT_KEX_MODE_KE_DHE)
+ s->ext.psk_kex_mode |= TLSEXT_KEX_MODE_FLAG_KE_DHE;
+ else if (mode == TLSEXT_KEX_MODE_KE
+ && (s->options & SSL_OP_ALLOW_NO_DHE_KEX) != 0)
+ s->ext.psk_kex_mode |= TLSEXT_KEX_MODE_FLAG_KE;
}
+#endif
- /* If i == num_groups then not in the list */
- return i < num_groups;
+ return 1;
}
/*
* the raw PACKET data for the extension. Returns 1 on success or 0 on failure.
* If a failure occurs then |*al| is set to an appropriate alert value.
*/
-int tls_parse_clienthello_key_share(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_key_share(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
+#ifndef OPENSSL_NO_TLS1_3
unsigned int group_id;
PACKET key_share_list, encoded_pt;
- const unsigned char *clntcurves, *srvrcurves;
- size_t clnt_num_curves, srvr_num_curves;
- int group_nid, found = 0;
- unsigned int curve_flags;
+ const uint16_t *clntgroups, *srvrgroups;
+ size_t clnt_num_groups, srvr_num_groups;
+ int found = 0;
- if (s->hit)
+ if (s->hit && (s->ext.psk_kex_mode & TLSEXT_KEX_MODE_FLAG_KE_DHE) == 0)
return 1;
/* Sanity check */
if (s->s3->peer_tmp != NULL) {
- *al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_CTOS_KEY_SHARE,
+ ERR_R_INTERNAL_ERROR);
return 0;
}
if (!PACKET_as_length_prefixed_2(pkt, &key_share_list)) {
- *al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, SSL_R_LENGTH_MISMATCH);
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_KEY_SHARE,
+ SSL_R_LENGTH_MISMATCH);
return 0;
}
- /* Get our list of supported curves */
- if (!tls1_get_curvelist(s, 0, &srvrcurves, &srvr_num_curves)) {
- *al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- /* Get the clients list of supported curves */
- if (!tls1_get_curvelist(s, 1, &clntcurves, &clnt_num_curves)) {
- *al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, ERR_R_INTERNAL_ERROR);
+ /* Get our list of supported groups */
+ tls1_get_supported_groups(s, &srvrgroups, &srvr_num_groups);
+ /* Get the clients list of supported groups. */
+ tls1_get_peer_groups(s, &clntgroups, &clnt_num_groups);
+ if (clnt_num_groups == 0) {
+ /*
+ * This can only happen if the supported_groups extension was not sent,
+ * because we verify that the length is non-zero when we process that
+ * extension.
+ */
+ SSLfatal(s, SSL_AD_MISSING_EXTENSION, SSL_F_TLS_PARSE_CTOS_KEY_SHARE,
+ SSL_R_MISSING_SUPPORTED_GROUPS_EXTENSION);
return 0;
}
if (!PACKET_get_net_2(&key_share_list, &group_id)
|| !PACKET_get_length_prefixed_2(&key_share_list, &encoded_pt)
|| PACKET_remaining(&encoded_pt) == 0) {
- *al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE,
- SSL_R_LENGTH_MISMATCH);
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_KEY_SHARE,
+ SSL_R_LENGTH_MISMATCH);
return 0;
}
continue;
/* Check if this share is in supported_groups sent from client */
- if (!check_in_list(s, group_id, clntcurves, clnt_num_curves, 0)) {
- *al = SSL_AD_HANDSHAKE_FAILURE;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, SSL_R_BAD_KEY_SHARE);
+ if (!check_in_list(s, group_id, clntgroups, clnt_num_groups, 0)) {
+ SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
+ SSL_F_TLS_PARSE_CTOS_KEY_SHARE, SSL_R_BAD_KEY_SHARE);
return 0;
}
/* Check if this share is for a group we can use */
- if (!check_in_list(s, group_id, srvrcurves, srvr_num_curves, 1)) {
+ if (!check_in_list(s, group_id, srvrgroups, srvr_num_groups, 1)) {
/* Share not suitable */
continue;
}
- group_nid = tls1_ec_curve_id2nid(group_id, &curve_flags);
-
- if (group_nid == 0) {
- *al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE,
+ if ((s->s3->peer_tmp = ssl_generate_param_group(group_id)) == NULL) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_PARSE_CTOS_KEY_SHARE,
SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS);
return 0;
}
- if ((curve_flags & TLS_CURVE_TYPE) == TLS_CURVE_CUSTOM) {
- /* Can happen for some curves, e.g. X25519 */
- EVP_PKEY *key = EVP_PKEY_new();
-
- if (key == NULL || !EVP_PKEY_set_type(key, group_nid)) {
- *al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, ERR_R_EVP_LIB);
- EVP_PKEY_free(key);
- return 0;
- }
- s->s3->peer_tmp = key;
- } else {
- /* Set up EVP_PKEY with named curve as parameters */
- EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_EC, NULL);
- if (pctx == NULL
- || EVP_PKEY_paramgen_init(pctx) <= 0
- || EVP_PKEY_CTX_set_ec_paramgen_curve_nid(pctx,
- group_nid) <= 0
- || EVP_PKEY_paramgen(pctx, &s->s3->peer_tmp) <= 0) {
- *al = SSL_AD_INTERNAL_ERROR;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, ERR_R_EVP_LIB);
- EVP_PKEY_CTX_free(pctx);
- return 0;
- }
- EVP_PKEY_CTX_free(pctx);
- pctx = NULL;
- }
s->s3->group_id = group_id;
if (!EVP_PKEY_set1_tls_encodedpoint(s->s3->peer_tmp,
PACKET_data(&encoded_pt),
PACKET_remaining(&encoded_pt))) {
- *al = SSL_AD_DECODE_ERROR;
- SSLerr(SSL_F_TLS_PARSE_CLIENTHELLO_KEY_SHARE, SSL_R_BAD_ECPOINT);
+ SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
+ SSL_F_TLS_PARSE_CTOS_KEY_SHARE, SSL_R_BAD_ECPOINT);
return 0;
}
found = 1;
}
+#endif
return 1;
}
#ifndef OPENSSL_NO_EC
-int tls_parse_clienthello_supported_groups(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_supported_groups(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
PACKET supported_groups_list;
if (!PACKET_as_length_prefixed_2(pkt, &supported_groups_list)
|| PACKET_remaining(&supported_groups_list) == 0
|| (PACKET_remaining(&supported_groups_list) % 2) != 0) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_SUPPORTED_GROUPS, SSL_R_BAD_EXTENSION);
return 0;
}
- if (!s->hit
- && !PACKET_memdup(&supported_groups_list,
- &s->session->tlsext_supportedgroupslist,
- &s->session->tlsext_supportedgroupslist_length)) {
- *al = SSL_AD_DECODE_ERROR;
- return 0;
+ if (!s->hit || SSL_IS_TLS13(s)) {
+ OPENSSL_free(s->session->ext.supportedgroups);
+ s->session->ext.supportedgroups = NULL;
+ s->session->ext.supportedgroups_len = 0;
+ if (!tls1_save_u16(&supported_groups_list,
+ &s->session->ext.supportedgroups,
+ &s->session->ext.supportedgroups_len)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_SUPPORTED_GROUPS,
+ ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
}
return 1;
}
#endif
-int tls_parse_clienthello_ems(SSL *s, PACKET *pkt, int *al)
+int tls_parse_ctos_ems(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
/* The extension must always be empty */
if (PACKET_remaining(pkt) != 0) {
- *al = SSL_AD_DECODE_ERROR;
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_EMS, SSL_R_BAD_EXTENSION);
return 0;
}
return 1;
}
-/*
- * Process the ALPN extension in a ClientHello.
- * al: a pointer to the alert value to send in the event of a failure.
- * returns 1 on success, 0 on error.
- */
-static int tls1_alpn_handle_client_hello_late(SSL *s, int *al)
-{
- const unsigned char *selected = NULL;
- unsigned char selected_len = 0;
-
- if (s->ctx->alpn_select_cb != NULL && s->s3->alpn_proposed != NULL) {
- int r = s->ctx->alpn_select_cb(s, &selected, &selected_len,
- s->s3->alpn_proposed,
- (unsigned int)s->s3->alpn_proposed_len,
- s->ctx->alpn_select_cb_arg);
-
- if (r == SSL_TLSEXT_ERR_OK) {
- OPENSSL_free(s->s3->alpn_selected);
- s->s3->alpn_selected = OPENSSL_memdup(selected, selected_len);
- if (s->s3->alpn_selected == NULL) {
- *al = SSL_AD_INTERNAL_ERROR;
- return 0;
- }
- s->s3->alpn_selected_len = selected_len;
-#ifndef OPENSSL_NO_NEXTPROTONEG
- /* ALPN takes precedence over NPN. */
- s->s3->next_proto_neg_seen = 0;
-#endif
- } else {
- *al = SSL_AD_NO_APPLICATION_PROTOCOL;
- return 0;
- }
+
+int tls_parse_ctos_early_data(SSL *s, PACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
+{
+ if (PACKET_remaining(pkt) != 0) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_EARLY_DATA, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
+
+ if (s->hello_retry_request) {
+ SSLfatal(s, SSL_AD_ILLEGAL_PARAMETER,
+ SSL_F_TLS_PARSE_CTOS_EARLY_DATA, SSL_R_BAD_EXTENSION);
+ return 0;
}
return 1;
}
-/*
- * Upon success, returns 1.
- * Upon failure, returns 0 and sets |al| to the appropriate fatal alert.
- */
-int ssl_check_clienthello_tlsext_late(SSL *s, int *al)
+int tls_parse_ctos_psk(SSL *s, PACKET *pkt, unsigned int context, X509 *x,
+ size_t chainidx)
{
- s->tlsext_status_expected = 0;
+ PACKET identities, binders, binder;
+ size_t binderoffset, hashsize;
+ SSL_SESSION *sess = NULL;
+ unsigned int id, i, ext = 0;
+ const EVP_MD *md = NULL;
/*
- * If status request then ask callback what to do. Note: this must be
- * called after servername callbacks in case the certificate has changed,
- * and must be called after the cipher has been chosen because this may
- * influence which certificate is sent
+ * If we have no PSK kex mode that we recognise then we can't resume so
+ * ignore this extension
*/
- if ((s->tlsext_status_type != -1) && s->ctx && s->ctx->tlsext_status_cb) {
- int ret;
- CERT_PKEY *certpkey;
- certpkey = ssl_get_server_send_pkey(s);
- /* If no certificate can't return certificate status */
- if (certpkey != NULL) {
+ if ((s->ext.psk_kex_mode
+ & (TLSEXT_KEX_MODE_FLAG_KE | TLSEXT_KEX_MODE_FLAG_KE_DHE)) == 0)
+ return 1;
+
+ if (!PACKET_get_length_prefixed_2(pkt, &identities)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_PSK, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
+
+ for (id = 0; PACKET_remaining(&identities) != 0; id++) {
+ PACKET identity;
+ unsigned long ticket_agel;
+
+ if (!PACKET_get_length_prefixed_2(&identities, &identity)
+ || !PACKET_get_net_4(&identities, &ticket_agel)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR,
+ SSL_F_TLS_PARSE_CTOS_PSK, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
+
+ if (s->psk_find_session_cb != NULL
+ && !s->psk_find_session_cb(s, PACKET_data(&identity),
+ PACKET_remaining(&identity),
+ &sess)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_PSK, SSL_R_BAD_EXTENSION);
+ return 0;
+ }
+
+ if (sess != NULL) {
+ /* We found a PSK */
+ SSL_SESSION *sesstmp = ssl_session_dup(sess, 0);
+
+ if (sesstmp == NULL) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_PSK, ERR_R_INTERNAL_ERROR);
+ return 0;
+ }
+ SSL_SESSION_free(sess);
+ sess = sesstmp;
+
/*
- * Set current certificate to one we will use so SSL_get_certificate
- * et al can pick it up.
+ * We've just been told to use this session for this context so
+ * make sure the sid_ctx matches up.
*/
- s->cert->key = certpkey;
- ret = s->ctx->tlsext_status_cb(s, s->ctx->tlsext_status_arg);
- switch (ret) {
- /* We don't want to send a status request response */
- case SSL_TLSEXT_ERR_NOACK:
- s->tlsext_status_expected = 0;
- break;
- /* status request response should be sent */
- case SSL_TLSEXT_ERR_OK:
- if (s->tlsext_ocsp_resp)
- s->tlsext_status_expected = 1;
- break;
- /* something bad happened */
- case SSL_TLSEXT_ERR_ALERT_FATAL:
- default:
- *al = SSL_AD_INTERNAL_ERROR;
+ memcpy(sess->sid_ctx, s->sid_ctx, s->sid_ctx_length);
+ sess->sid_ctx_length = s->sid_ctx_length;
+ ext = 1;
+ if (id == 0)
+ s->ext.early_data_ok = 1;
+ } else {
+ uint32_t ticket_age = 0, now, agesec, agems;
+ int ret = tls_decrypt_ticket(s, PACKET_data(&identity),
+ PACKET_remaining(&identity), NULL, 0,
+ &sess);
+
+ if (ret == TICKET_FATAL_ERR_MALLOC
+ || ret == TICKET_FATAL_ERR_OTHER) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_PARSE_CTOS_PSK, ERR_R_INTERNAL_ERROR);
return 0;
}
+ if (ret == TICKET_NO_DECRYPT)
+ continue;
+
+ ticket_age = (uint32_t)ticket_agel;
+ now = (uint32_t)time(NULL);
+ agesec = now - (uint32_t)sess->time;
+ agems = agesec * (uint32_t)1000;
+ ticket_age -= sess->ext.tick_age_add;
+
+ /*
+ * For simplicity we do our age calculations in seconds. If the
+ * client does it in ms then it could appear that their ticket age
+ * is longer than ours (our ticket age calculation should always be
+ * slightly longer than the client's due to the network latency).
+ * Therefore we add 1000ms to our age calculation to adjust for
+ * rounding errors.
+ */
+ if (id == 0
+ && sess->timeout >= (long)agesec
+ && agems / (uint32_t)1000 == agesec
+ && ticket_age <= agems + 1000
+ && ticket_age + TICKET_AGE_ALLOWANCE >= agems + 1000) {
+ /*
+ * Ticket age is within tolerance and not expired. We allow it
+ * for early data
+ */
+ s->ext.early_data_ok = 1;
+ }
+ }
+
+ md = ssl_md(sess->cipher->algorithm2);
+ if (md != ssl_md(s->s3->tmp.new_cipher->algorithm2)) {
+ /* The ciphersuite is not compatible with this session. */
+ SSL_SESSION_free(sess);
+ sess = NULL;
+ s->ext.early_data_ok = 0;
+ continue;
}
+ break;
}
- if (!tls1_alpn_handle_client_hello_late(s, al)) {
- return 0;
+ if (sess == NULL)
+ return 1;
+
+ binderoffset = PACKET_data(pkt) - (const unsigned char *)s->init_buf->data;
+ hashsize = EVP_MD_size(md);
+
+ if (!PACKET_get_length_prefixed_2(pkt, &binders)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_PSK,
+ SSL_R_BAD_EXTENSION);
+ goto err;
+ }
+
+ for (i = 0; i <= id; i++) {
+ if (!PACKET_get_length_prefixed_1(&binders, &binder)) {
+ SSLfatal(s, SSL_AD_DECODE_ERROR, SSL_F_TLS_PARSE_CTOS_PSK,
+ SSL_R_BAD_EXTENSION);
+ goto err;
+ }
}
+ if (PACKET_remaining(&binder) != hashsize
+ || tls_psk_do_binder(s, md,
+ (const unsigned char *)s->init_buf->data,
+ binderoffset, PACKET_data(&binder), NULL,
+ sess, 0, ext) != 1) {
+ /* SSLfatal() already called */
+ goto err;
+ }
+
+ sess->ext.tick_identity = id;
+
+ SSL_SESSION_free(s->session);
+ s->session = sess;
return 1;
+err:
+ SSL_SESSION_free(sess);
+ return 0;
}
-/* Add the server's renegotiation binding */
-int tls_construct_server_renegotiate(SSL *s, WPACKET *pkt, int *al)
+/*
+ * Add the server's renegotiation binding
+ */
+EXT_RETURN tls_construct_stoc_renegotiate(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
if (!s->s3->send_connection_binding)
- return 1;
+ return EXT_RETURN_NOT_SENT;
+ /* Still add this even if SSL_OP_NO_RENEGOTIATION is set */
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_renegotiate)
|| !WPACKET_start_sub_packet_u16(pkt)
|| !WPACKET_start_sub_packet_u8(pkt)
s->s3->previous_server_finished_len)
|| !WPACKET_close(pkt)
|| !WPACKET_close(pkt)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_RENEGOTIATE, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_RENEGOTIATE,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
}
-int tls_construct_server_server_name(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_server_name(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
if (s->hit || s->servername_done != 1
- || s->session->tlsext_hostname == NULL)
- return 1;
+ || s->session->ext.hostname == NULL)
+ return EXT_RETURN_NOT_SENT;
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_server_name)
|| !WPACKET_put_bytes_u16(pkt, 0)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_SERVER_NAME, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_SERVER_NAME,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
+}
+
+/* Add/include the server's max fragment len extension into ServerHello */
+EXT_RETURN tls_construct_stoc_maxfragmentlen(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
+{
+ if (!USE_MAX_FRAGMENT_LENGTH_EXT(s->session))
+ return EXT_RETURN_NOT_SENT;
+
+ /*-
+ * 4 bytes for this extension type and extension length
+ * 1 byte for the Max Fragment Length code value.
+ */
+ if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_max_fragment_length)
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !WPACKET_put_bytes_u8(pkt, s->session->ext.max_fragment_len_mode)
+ || !WPACKET_close(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_MAXFRAGMENTLEN, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ return EXT_RETURN_SENT;
}
#ifndef OPENSSL_NO_EC
-int tls_construct_server_ec_pt_formats(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_ec_pt_formats(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
unsigned long alg_k = s->s3->tmp.new_cipher->algorithm_mkey;
unsigned long alg_a = s->s3->tmp.new_cipher->algorithm_auth;
- int using_ecc = (alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA);
- using_ecc = using_ecc && (s->session->tlsext_ecpointformatlist != NULL);
+ int using_ecc = ((alg_k & SSL_kECDHE) || (alg_a & SSL_aECDSA))
+ && (s->session->ext.ecpointformats != NULL);
const unsigned char *plist;
size_t plistlen;
if (!using_ecc)
- return 1;
+ return EXT_RETURN_NOT_SENT;
tls1_get_formatlist(s, &plist, &plistlen);
-
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_ec_point_formats)
|| !WPACKET_start_sub_packet_u16(pkt)
|| !WPACKET_sub_memcpy_u8(pkt, plist, plistlen)
|| !WPACKET_close(pkt)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_EC_PT_FORMATS, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_EC_PT_FORMATS, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
}
#endif
-int tls_construct_server_session_ticket(SSL *s, WPACKET *pkt, int *al)
+#ifndef OPENSSL_NO_EC
+EXT_RETURN tls_construct_stoc_supported_groups(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
- if (!s->tlsext_ticket_expected || !tls_use_ticket(s)) {
- s->tlsext_ticket_expected = 0;
- return 1;
+ const uint16_t *groups;
+ size_t numgroups, i, first = 1;
+
+ /* s->s3->group_id is non zero if we accepted a key_share */
+ if (s->s3->group_id == 0)
+ return EXT_RETURN_NOT_SENT;
+
+ /* Get our list of supported groups */
+ tls1_get_supported_groups(s, &groups, &numgroups);
+ if (numgroups == 0) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_SUPPORTED_GROUPS, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ /* Copy group ID if supported */
+ for (i = 0; i < numgroups; i++) {
+ uint16_t group = groups[i];
+
+ if (tls_curve_allowed(s, group, SSL_SECOP_CURVE_SUPPORTED)) {
+ if (first) {
+ /*
+ * Check if the client is already using our preferred group. If
+ * so we don't need to add this extension
+ */
+ if (s->s3->group_id == group)
+ return EXT_RETURN_NOT_SENT;
+
+ /* Add extension header */
+ if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_supported_groups)
+ /* Sub-packet for supported_groups extension */
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !WPACKET_start_sub_packet_u16(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_SUPPORTED_GROUPS,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ first = 0;
+ }
+ if (!WPACKET_put_bytes_u16(pkt, group)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_SUPPORTED_GROUPS,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+ }
+ }
+
+ if (!WPACKET_close(pkt) || !WPACKET_close(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_SUPPORTED_GROUPS,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ return EXT_RETURN_SENT;
+}
+#endif
+
+EXT_RETURN tls_construct_stoc_session_ticket(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
+{
+ if (!s->ext.ticket_expected || !tls_use_ticket(s)) {
+ s->ext.ticket_expected = 0;
+ return EXT_RETURN_NOT_SENT;
}
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_session_ticket)
|| !WPACKET_put_bytes_u16(pkt, 0)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_SESSION_TICKET, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_SESSION_TICKET, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
}
-int tls_construct_server_status_request(SSL *s, WPACKET *pkt, int *al)
+#ifndef OPENSSL_NO_OCSP
+EXT_RETURN tls_construct_stoc_status_request(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
- if (!s->tlsext_status_expected)
- return 1;
+ if (!s->ext.status_expected)
+ return EXT_RETURN_NOT_SENT;
+
+ if (SSL_IS_TLS13(s) && chainidx != 0)
+ return EXT_RETURN_NOT_SENT;
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_status_request)
- || !WPACKET_put_bytes_u16(pkt, 0)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_STATUS_REQUEST, ERR_R_INTERNAL_ERROR);
- return 0;
+ || !WPACKET_start_sub_packet_u16(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_STATUS_REQUEST, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
-}
+ /*
+ * In TLSv1.3 we include the certificate status itself. In <= TLSv1.2 we
+ * send back an empty extension, with the certificate status appearing as a
+ * separate message
+ */
+ if (SSL_IS_TLS13(s) && !tls_construct_cert_status_body(s, pkt)) {
+ /* SSLfatal() already called */
+ return EXT_RETURN_FAIL;
+ }
+ if (!WPACKET_close(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_STATUS_REQUEST, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+ return EXT_RETURN_SENT;
+}
+#endif
#ifndef OPENSSL_NO_NEXTPROTONEG
-int tls_construct_server_next_proto_neg(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_next_proto_neg(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
const unsigned char *npa;
unsigned int npalen;
int ret;
- int next_proto_neg_seen = s->s3->next_proto_neg_seen;
+ int npn_seen = s->s3->npn_seen;
- s->s3->next_proto_neg_seen = 0;
- if (!next_proto_neg_seen || s->ctx->next_protos_advertised_cb == NULL)
- return 1;
+ s->s3->npn_seen = 0;
+ if (!npn_seen || s->ctx->ext.npn_advertised_cb == NULL)
+ return EXT_RETURN_NOT_SENT;
- ret = s->ctx->next_protos_advertised_cb(s, &npa, &npalen,
- s->ctx->next_protos_advertised_cb_arg);
+ ret = s->ctx->ext.npn_advertised_cb(s, &npa, &npalen,
+ s->ctx->ext.npn_advertised_cb_arg);
if (ret == SSL_TLSEXT_ERR_OK) {
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_next_proto_neg)
|| !WPACKET_sub_memcpy_u16(pkt, npa, npalen)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_NEXT_PROTO_NEG,
- ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_NEXT_PROTO_NEG,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- s->s3->next_proto_neg_seen = 1;
+ s->s3->npn_seen = 1;
}
- return 1;
+ return EXT_RETURN_SENT;
}
#endif
-int tls_construct_server_alpn(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_alpn(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
if (s->s3->alpn_selected == NULL)
- return 1;
+ return EXT_RETURN_NOT_SENT;
if (!WPACKET_put_bytes_u16(pkt,
TLSEXT_TYPE_application_layer_protocol_negotiation)
s->s3->alpn_selected_len)
|| !WPACKET_close(pkt)
|| !WPACKET_close(pkt)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_ALPN, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_ALPN, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
}
#ifndef OPENSSL_NO_SRTP
-int tls_construct_server_use_srtp(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_use_srtp(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
if (s->srtp_profile == NULL)
- return 1;
-
+ return EXT_RETURN_NOT_SENT;
+
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_use_srtp)
|| !WPACKET_start_sub_packet_u16(pkt)
|| !WPACKET_put_bytes_u16(pkt, 2)
|| !WPACKET_put_bytes_u16(pkt, s->srtp_profile->id)
|| !WPACKET_put_bytes_u8(pkt, 0)
|| !WPACKET_close(pkt)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_USE_SRTP, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_USE_SRTP,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
}
#endif
-int tls_construct_server_etm(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_etm(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
- if ((s->s3->flags & TLS1_FLAGS_ENCRYPT_THEN_MAC) == 0)
- return 1;
+ if (!s->ext.use_etm)
+ return EXT_RETURN_NOT_SENT;
/*
* Don't use encrypt_then_mac if AEAD or RC4 might want to disable
|| s->s3->tmp.new_cipher->algorithm_enc == SSL_RC4
|| s->s3->tmp.new_cipher->algorithm_enc == SSL_eGOST2814789CNT
|| s->s3->tmp.new_cipher->algorithm_enc == SSL_eGOST2814789CNT12) {
- s->s3->flags &= ~TLS1_FLAGS_ENCRYPT_THEN_MAC;
- return 1;
+ s->ext.use_etm = 0;
+ return EXT_RETURN_NOT_SENT;
}
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_encrypt_then_mac)
|| !WPACKET_put_bytes_u16(pkt, 0)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_ETM, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_ETM,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
}
-int tls_construct_server_ems(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_ems(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
{
if ((s->s3->flags & TLS1_FLAGS_RECEIVED_EXTMS) == 0)
- return 1;
+ return EXT_RETURN_NOT_SENT;
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_extended_master_secret)
|| !WPACKET_put_bytes_u16(pkt, 0)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_EMS, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_EMS,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
}
-int tls_construct_server_key_share(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_key_share(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
+#ifndef OPENSSL_NO_TLS1_3
unsigned char *encodedPoint;
size_t encoded_pt_len = 0;
EVP_PKEY *ckey = s->s3->peer_tmp, *skey = NULL;
- if (s->hit)
- return 1;
-
if (ckey == NULL) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_SHARE, ERR_R_INTERNAL_ERROR);
- return 0;
+ /* No key_share received from client */
+ if (s->hello_retry_request) {
+ if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_key_share)
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !WPACKET_put_bytes_u16(pkt, s->s3->group_id)
+ || !WPACKET_close(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_KEY_SHARE,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ return EXT_RETURN_SENT;
+ }
+
+ /* Must be resuming. */
+ if (!s->hit || !tls13_generate_handshake_secret(s, NULL, 0)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_KEY_SHARE, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+ return EXT_RETURN_NOT_SENT;
}
if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_key_share)
|| !WPACKET_start_sub_packet_u16(pkt)
|| !WPACKET_put_bytes_u16(pkt, s->s3->group_id)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_SHARE, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_KEY_SHARE, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
skey = ssl_generate_pkey(ckey);
if (skey == NULL) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_SHARE, ERR_R_MALLOC_FAILURE);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_KEY_SHARE,
+ ERR_R_MALLOC_FAILURE);
+ return EXT_RETURN_FAIL;
}
/* Generate encoding of server key */
encoded_pt_len = EVP_PKEY_get1_tls_encodedpoint(skey, &encodedPoint);
if (encoded_pt_len == 0) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_SHARE, ERR_R_EC_LIB);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_KEY_SHARE,
+ ERR_R_EC_LIB);
EVP_PKEY_free(skey);
- return 0;
+ return EXT_RETURN_FAIL;
}
if (!WPACKET_sub_memcpy_u16(pkt, encodedPoint, encoded_pt_len)
|| !WPACKET_close(pkt)) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_SHARE, ERR_R_INTERNAL_ERROR);
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_KEY_SHARE,
+ ERR_R_INTERNAL_ERROR);
EVP_PKEY_free(skey);
OPENSSL_free(encodedPoint);
- return 0;
+ return EXT_RETURN_FAIL;
}
OPENSSL_free(encodedPoint);
/* This causes the crypto state to be updated based on the derived keys */
s->s3->tmp.pkey = skey;
if (ssl_derive(s, skey, ckey, 1) == 0) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_KEY_SHARE, ERR_R_INTERNAL_ERROR);
- return 0;
+ /* SSLfatal() already called */
+ return EXT_RETURN_FAIL;
}
+#endif
- return 1;
+ return EXT_RETURN_SENT;
}
-int tls_construct_server_cryptopro_bug(SSL *s, WPACKET *pkt, int *al)
+EXT_RETURN tls_construct_stoc_cryptopro_bug(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
{
const unsigned char cryptopro_ext[36] = {
0xfd, 0xe8, /* 65000 */
if (((s->s3->tmp.new_cipher->id & 0xFFFF) != 0x80
&& (s->s3->tmp.new_cipher->id & 0xFFFF) != 0x81)
|| (SSL_get_options(s) & SSL_OP_CRYPTOPRO_TLSEXT_BUG) == 0)
- return 1;
+ return EXT_RETURN_NOT_SENT;
if (!WPACKET_memcpy(pkt, cryptopro_ext, sizeof(cryptopro_ext))) {
- SSLerr(SSL_F_TLS_CONSTRUCT_SERVER_CRYPTOPRO_BUG, ERR_R_INTERNAL_ERROR);
- return 0;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_CRYPTOPRO_BUG, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
}
- return 1;
+ return EXT_RETURN_SENT;
+}
+
+EXT_RETURN tls_construct_stoc_early_data(SSL *s, WPACKET *pkt,
+ unsigned int context, X509 *x,
+ size_t chainidx)
+{
+ if (context == SSL_EXT_TLS1_3_NEW_SESSION_TICKET) {
+ if (s->max_early_data == 0)
+ return EXT_RETURN_NOT_SENT;
+
+ if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_early_data)
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !WPACKET_put_bytes_u32(pkt, s->max_early_data)
+ || !WPACKET_close(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_EARLY_DATA, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ return EXT_RETURN_SENT;
+ }
+
+ if (s->ext.early_data != SSL_EARLY_DATA_ACCEPTED)
+ return EXT_RETURN_NOT_SENT;
+
+ if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_early_data)
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !WPACKET_close(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_TLS_CONSTRUCT_STOC_EARLY_DATA,
+ ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ return EXT_RETURN_SENT;
+}
+
+EXT_RETURN tls_construct_stoc_psk(SSL *s, WPACKET *pkt, unsigned int context,
+ X509 *x, size_t chainidx)
+{
+ if (!s->hit)
+ return EXT_RETURN_NOT_SENT;
+
+ if (!WPACKET_put_bytes_u16(pkt, TLSEXT_TYPE_psk)
+ || !WPACKET_start_sub_packet_u16(pkt)
+ || !WPACKET_put_bytes_u16(pkt, s->session->ext.tick_identity)
+ || !WPACKET_close(pkt)) {
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR,
+ SSL_F_TLS_CONSTRUCT_STOC_PSK, ERR_R_INTERNAL_ERROR);
+ return EXT_RETURN_FAIL;
+ }
+
+ return EXT_RETURN_SENT;
}
projects / openssl.git / blobdiff