Move session functions to same part of file
Ensure that session save and load functions are not scattered
throughout ssl_tls.c but are in the same part of the file.
Signed-off-by: David Horstmann <david.horstmann@arm.com>
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 54db0a1..870f7d9 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -432,10 +432,6 @@
static int ssl_calc_finished_tls_sha384(mbedtls_ssl_context *, unsigned char *, int);
#endif /* MBEDTLS_MD_CAN_SHA384*/
-static size_t ssl_tls12_session_save(const mbedtls_ssl_session *session,
- unsigned char *buf,
- size_t buf_len);
-
MBEDTLS_CHECK_RETURN_CRITICAL
static int ssl_tls12_session_load(mbedtls_ssl_session *session,
const unsigned char *buf,
@@ -2448,282 +2444,6 @@
#if defined(MBEDTLS_USE_PSA_CRYPTO) || defined(MBEDTLS_SSL_PROTO_TLS1_3)
-#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
-/* Serialization of TLS 1.3 sessions:
- *
- * struct {
- * opaque hostname<0..2^16-1>;
- * uint64 ticket_reception_time;
- * uint32 ticket_lifetime;
- * opaque ticket<1..2^16-1>;
- * } ClientOnlyData;
- *
- * struct {
- * uint32 ticket_age_add;
- * uint8 ticket_flags;
- * opaque resumption_key<0..255>;
- * uint32 max_early_data_size;
- * uint16 record_size_limit;
- * select ( endpoint ) {
- * case client: ClientOnlyData;
- * case server: uint64 ticket_creation_time;
- * };
- * } serialized_session_tls13;
- *
- */
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_session_save(const mbedtls_ssl_session *session,
- unsigned char *buf,
- size_t buf_len,
- size_t *olen)
-{
- unsigned char *p = buf;
-#if defined(MBEDTLS_SSL_CLI_C) && \
- defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
- size_t hostname_len = (session->hostname == NULL) ?
- 0 : strlen(session->hostname) + 1;
-#endif
- size_t needed = 4 /* ticket_age_add */
- + 1 /* ticket_flags */
- + 1; /* resumption_key length */
- *olen = 0;
-
- if (session->resumption_key_len > MBEDTLS_SSL_TLS1_3_TICKET_RESUMPTION_KEY_LEN) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- needed += session->resumption_key_len; /* resumption_key */
-
-#if defined(MBEDTLS_SSL_EARLY_DATA)
- needed += 4; /* max_early_data_size */
-#endif
-#if defined(MBEDTLS_SSL_RECORD_SIZE_LIMIT)
- needed += 2; /* record_size_limit */
-#endif /* MBEDTLS_SSL_RECORD_SIZE_LIMIT */
-
-#if defined(MBEDTLS_HAVE_TIME)
- needed += 8; /* ticket_creation_time or ticket_reception_time */
-#endif
-
-#if defined(MBEDTLS_SSL_CLI_C)
- if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
-#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
- needed += 2 /* hostname_len */
- + hostname_len; /* hostname */
-#endif
-
- needed += 4 /* ticket_lifetime */
- + 2; /* ticket_len */
-
- /* Check size_t overflow */
- if (session->ticket_len > SIZE_MAX - needed) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- needed += session->ticket_len; /* ticket */
- }
-#endif /* MBEDTLS_SSL_CLI_C */
-
- *olen = needed;
- if (needed > buf_len) {
- return MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL;
- }
-
- MBEDTLS_PUT_UINT32_BE(session->ticket_age_add, p, 0);
- p[4] = session->ticket_flags;
-
- /* save resumption_key */
- p[5] = session->resumption_key_len;
- p += 6;
- memcpy(p, session->resumption_key, session->resumption_key_len);
- p += session->resumption_key_len;
-
-#if defined(MBEDTLS_SSL_EARLY_DATA)
- MBEDTLS_PUT_UINT32_BE(session->max_early_data_size, p, 0);
- p += 4;
-#endif
-#if defined(MBEDTLS_SSL_RECORD_SIZE_LIMIT)
- MBEDTLS_PUT_UINT16_BE(session->record_size_limit, p, 0);
- p += 2;
-#endif /* MBEDTLS_SSL_RECORD_SIZE_LIMIT */
-
-#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
- if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
- MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_creation_time, p, 0);
- p += 8;
- }
-#endif /* MBEDTLS_HAVE_TIME */
-
-#if defined(MBEDTLS_SSL_CLI_C)
- if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
-#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
- MBEDTLS_PUT_UINT16_BE(hostname_len, p, 0);
- p += 2;
- if (hostname_len > 0) {
- /* save host name */
- memcpy(p, session->hostname, hostname_len);
- p += hostname_len;
- }
-#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
-
-#if defined(MBEDTLS_HAVE_TIME)
- MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_reception_time, p, 0);
- p += 8;
-#endif
- MBEDTLS_PUT_UINT32_BE(session->ticket_lifetime, p, 0);
- p += 4;
-
- MBEDTLS_PUT_UINT16_BE(session->ticket_len, p, 0);
- p += 2;
-
- if (session->ticket != NULL && session->ticket_len > 0) {
- memcpy(p, session->ticket, session->ticket_len);
- p += session->ticket_len;
- }
- }
-#endif /* MBEDTLS_SSL_CLI_C */
- return 0;
-}
-
-MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_session_load(mbedtls_ssl_session *session,
- const unsigned char *buf,
- size_t len)
-{
- const unsigned char *p = buf;
- const unsigned char *end = buf + len;
-
- if (end - p < 6) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->ticket_age_add = MBEDTLS_GET_UINT32_BE(p, 0);
- session->ticket_flags = p[4];
-
- /* load resumption_key */
- session->resumption_key_len = p[5];
- p += 6;
-
- if (end - p < session->resumption_key_len) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- if (sizeof(session->resumption_key) < session->resumption_key_len) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- memcpy(session->resumption_key, p, session->resumption_key_len);
- p += session->resumption_key_len;
-
-#if defined(MBEDTLS_SSL_EARLY_DATA)
- if (end - p < 4) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->max_early_data_size = MBEDTLS_GET_UINT32_BE(p, 0);
- p += 4;
-#endif
-#if defined(MBEDTLS_SSL_RECORD_SIZE_LIMIT)
- if (end - p < 2) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->record_size_limit = MBEDTLS_GET_UINT16_BE(p, 0);
- p += 2;
-#endif /* MBEDTLS_SSL_RECORD_SIZE_LIMIT */
-
-#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
- if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
- if (end - p < 8) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->ticket_creation_time = MBEDTLS_GET_UINT64_BE(p, 0);
- p += 8;
- }
-#endif /* MBEDTLS_HAVE_TIME */
-
-#if defined(MBEDTLS_SSL_CLI_C)
- if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
-#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
- size_t hostname_len;
- /* load host name */
- if (end - p < 2) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- hostname_len = MBEDTLS_GET_UINT16_BE(p, 0);
- p += 2;
-
- if (end - p < (long int) hostname_len) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- if (hostname_len > 0) {
- session->hostname = mbedtls_calloc(1, hostname_len);
- if (session->hostname == NULL) {
- return MBEDTLS_ERR_SSL_ALLOC_FAILED;
- }
- memcpy(session->hostname, p, hostname_len);
- p += hostname_len;
- }
-#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
-
-#if defined(MBEDTLS_HAVE_TIME)
- if (end - p < 8) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->ticket_reception_time = MBEDTLS_GET_UINT64_BE(p, 0);
- p += 8;
-#endif
- if (end - p < 4) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->ticket_lifetime = MBEDTLS_GET_UINT32_BE(p, 0);
- p += 4;
-
- if (end - p < 2) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->ticket_len = MBEDTLS_GET_UINT16_BE(p, 0);
- p += 2;
-
- if (end - p < (long int) session->ticket_len) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- if (session->ticket_len > 0) {
- session->ticket = mbedtls_calloc(1, session->ticket_len);
- if (session->ticket == NULL) {
- return MBEDTLS_ERR_SSL_ALLOC_FAILED;
- }
- memcpy(session->ticket, p, session->ticket_len);
- p += session->ticket_len;
- }
- }
-#endif /* MBEDTLS_SSL_CLI_C */
-
- return 0;
-
-}
-#else /* MBEDTLS_SSL_SESSION_TICKETS */
-MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls13_session_save(const mbedtls_ssl_session *session,
- unsigned char *buf,
- size_t buf_len,
- size_t *olen)
-{
- ((void) session);
- ((void) buf);
- ((void) buf_len);
- *olen = 0;
- return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
-}
-
-static int ssl_tls13_session_load(const mbedtls_ssl_session *session,
- unsigned char *buf,
- size_t buf_len)
-{
- ((void) session);
- ((void) buf);
- ((void) buf_len);
- return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
-}
-#endif /* !MBEDTLS_SSL_SESSION_TICKETS */
-#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
-
psa_status_t mbedtls_ssl_cipher_to_psa(mbedtls_cipher_type_t mbedtls_cipher_type,
size_t taglen,
psa_algorithm_t *alg,
@@ -3640,6 +3360,664 @@
}
#endif /* MBEDTLS_SSL_CLI_C */
+/* Serialization of TLS 1.2 sessions:
+ *
+ * struct {
+ * opaque ticket<0..2^24-1>; // length 0 means no ticket
+ * uint32 ticket_lifetime;
+ * } ClientOnlyData;
+ *
+ * struct {
+ * uint64 start_time;
+ * uint8 session_id_len; // at most 32
+ * opaque session_id[32];
+ * opaque master[48]; // fixed length in the standard
+ * uint32 verify_result;
+ * opaque peer_cert<0..2^24-1>; // length 0 means no peer cert
+ * select (endpoint) {
+ * case client: ClientOnlyData;
+ * case server: uint64 ticket_creation_time;
+ * };
+ * uint8 mfl_code; // up to 255 according to standard
+ * uint8 encrypt_then_mac; // 0 or 1
+ * } serialized_session_tls12;
+ */
+static size_t ssl_tls12_session_save(const mbedtls_ssl_session *session,
+ unsigned char *buf,
+ size_t buf_len)
+{
+ unsigned char *p = buf;
+ size_t used = 0;
+
+#if defined(MBEDTLS_HAVE_TIME)
+ uint64_t start;
+#endif
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
+ size_t cert_len;
+#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
+#endif /* MBEDTLS_X509_CRT_PARSE_C */
+
+ /*
+ * Time
+ */
+#if defined(MBEDTLS_HAVE_TIME)
+ used += 8;
+
+ if (used <= buf_len) {
+ start = (uint64_t) session->start;
+
+ MBEDTLS_PUT_UINT64_BE(start, p, 0);
+ p += 8;
+ }
+#endif /* MBEDTLS_HAVE_TIME */
+
+ /*
+ * Basic mandatory fields
+ */
+ used += 1 /* id_len */
+ + sizeof(session->id)
+ + sizeof(session->master)
+ + 4; /* verify_result */
+
+ if (used <= buf_len) {
+ *p++ = MBEDTLS_BYTE_0(session->id_len);
+ memcpy(p, session->id, 32);
+ p += 32;
+
+ memcpy(p, session->master, 48);
+ p += 48;
+
+ MBEDTLS_PUT_UINT32_BE(session->verify_result, p, 0);
+ p += 4;
+ }
+
+ /*
+ * Peer's end-entity certificate
+ */
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
+ if (session->peer_cert == NULL) {
+ cert_len = 0;
+ } else {
+ cert_len = session->peer_cert->raw.len;
+ }
+
+ used += 3 + cert_len;
+
+ if (used <= buf_len) {
+ *p++ = MBEDTLS_BYTE_2(cert_len);
+ *p++ = MBEDTLS_BYTE_1(cert_len);
+ *p++ = MBEDTLS_BYTE_0(cert_len);
+
+ if (session->peer_cert != NULL) {
+ memcpy(p, session->peer_cert->raw.p, cert_len);
+ p += cert_len;
+ }
+ }
+#else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
+ if (session->peer_cert_digest != NULL) {
+ used += 1 /* type */ + 1 /* length */ + session->peer_cert_digest_len;
+ if (used <= buf_len) {
+ *p++ = (unsigned char) session->peer_cert_digest_type;
+ *p++ = (unsigned char) session->peer_cert_digest_len;
+ memcpy(p, session->peer_cert_digest,
+ session->peer_cert_digest_len);
+ p += session->peer_cert_digest_len;
+ }
+ } else {
+ used += 2;
+ if (used <= buf_len) {
+ *p++ = (unsigned char) MBEDTLS_MD_NONE;
+ *p++ = 0;
+ }
+ }
+#endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
+#endif /* MBEDTLS_X509_CRT_PARSE_C */
+
+ /*
+ * Session ticket if any, plus associated data
+ */
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+#if defined(MBEDTLS_SSL_CLI_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
+ used += 3 + session->ticket_len + 4; /* len + ticket + lifetime */
+
+ if (used <= buf_len) {
+ *p++ = MBEDTLS_BYTE_2(session->ticket_len);
+ *p++ = MBEDTLS_BYTE_1(session->ticket_len);
+ *p++ = MBEDTLS_BYTE_0(session->ticket_len);
+
+ if (session->ticket != NULL) {
+ memcpy(p, session->ticket, session->ticket_len);
+ p += session->ticket_len;
+ }
+
+ MBEDTLS_PUT_UINT32_BE(session->ticket_lifetime, p, 0);
+ p += 4;
+ }
+ }
+#endif /* MBEDTLS_SSL_CLI_C */
+#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
+ used += 8;
+
+ if (used <= buf_len) {
+ MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_creation_time, p, 0);
+ p += 8;
+ }
+ }
+#endif /* MBEDTLS_HAVE_TIME && MBEDTLS_SSL_SRV_C */
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
+ /*
+ * Misc extension-related info
+ */
+#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
+ used += 1;
+
+ if (used <= buf_len) {
+ *p++ = session->mfl_code;
+ }
+#endif
+
+#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
+ used += 1;
+
+ if (used <= buf_len) {
+ *p++ = MBEDTLS_BYTE_0(session->encrypt_then_mac);
+ }
+#endif
+
+ return used;
+}
+
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls12_session_load(mbedtls_ssl_session *session,
+ const unsigned char *buf,
+ size_t len)
+{
+#if defined(MBEDTLS_HAVE_TIME)
+ uint64_t start;
+#endif
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
+ size_t cert_len;
+#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
+#endif /* MBEDTLS_X509_CRT_PARSE_C */
+
+ const unsigned char *p = buf;
+ const unsigned char * const end = buf + len;
+
+ /*
+ * Time
+ */
+#if defined(MBEDTLS_HAVE_TIME)
+ if (8 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ start = MBEDTLS_GET_UINT64_BE(p, 0);
+ p += 8;
+
+ session->start = (time_t) start;
+#endif /* MBEDTLS_HAVE_TIME */
+
+ /*
+ * Basic mandatory fields
+ */
+ if (1 + 32 + 48 + 4 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->id_len = *p++;
+ memcpy(session->id, p, 32);
+ p += 32;
+
+ memcpy(session->master, p, 48);
+ p += 48;
+
+ session->verify_result = MBEDTLS_GET_UINT32_BE(p, 0);
+ p += 4;
+
+ /* Immediately clear invalid pointer values that have been read, in case
+ * we exit early before we replaced them with valid ones. */
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
+ session->peer_cert = NULL;
+#else
+ session->peer_cert_digest = NULL;
+#endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
+#endif /* MBEDTLS_X509_CRT_PARSE_C */
+#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
+ session->ticket = NULL;
+#endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
+
+ /*
+ * Peer certificate
+ */
+#if defined(MBEDTLS_X509_CRT_PARSE_C)
+#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
+ /* Deserialize CRT from the end of the ticket. */
+ if (3 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ cert_len = MBEDTLS_GET_UINT24_BE(p, 0);
+ p += 3;
+
+ if (cert_len != 0) {
+ int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
+
+ if (cert_len > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->peer_cert = mbedtls_calloc(1, sizeof(mbedtls_x509_crt));
+
+ if (session->peer_cert == NULL) {
+ return MBEDTLS_ERR_SSL_ALLOC_FAILED;
+ }
+
+ mbedtls_x509_crt_init(session->peer_cert);
+
+ if ((ret = mbedtls_x509_crt_parse_der(session->peer_cert,
+ p, cert_len)) != 0) {
+ mbedtls_x509_crt_free(session->peer_cert);
+ mbedtls_free(session->peer_cert);
+ session->peer_cert = NULL;
+ return ret;
+ }
+
+ p += cert_len;
+ }
+#else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
+ /* Deserialize CRT digest from the end of the ticket. */
+ if (2 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->peer_cert_digest_type = (mbedtls_md_type_t) *p++;
+ session->peer_cert_digest_len = (size_t) *p++;
+
+ if (session->peer_cert_digest_len != 0) {
+ const mbedtls_md_info_t *md_info =
+ mbedtls_md_info_from_type(session->peer_cert_digest_type);
+ if (md_info == NULL) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ if (session->peer_cert_digest_len != mbedtls_md_get_size(md_info)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ if (session->peer_cert_digest_len > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->peer_cert_digest =
+ mbedtls_calloc(1, session->peer_cert_digest_len);
+ if (session->peer_cert_digest == NULL) {
+ return MBEDTLS_ERR_SSL_ALLOC_FAILED;
+ }
+
+ memcpy(session->peer_cert_digest, p,
+ session->peer_cert_digest_len);
+ p += session->peer_cert_digest_len;
+ }
+#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
+#endif /* MBEDTLS_X509_CRT_PARSE_C */
+
+ /*
+ * Session ticket and associated data
+ */
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+#if defined(MBEDTLS_SSL_CLI_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
+ if (3 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->ticket_len = MBEDTLS_GET_UINT24_BE(p, 0);
+ p += 3;
+
+ if (session->ticket_len != 0) {
+ if (session->ticket_len > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->ticket = mbedtls_calloc(1, session->ticket_len);
+ if (session->ticket == NULL) {
+ return MBEDTLS_ERR_SSL_ALLOC_FAILED;
+ }
+
+ memcpy(session->ticket, p, session->ticket_len);
+ p += session->ticket_len;
+ }
+
+ if (4 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->ticket_lifetime = MBEDTLS_GET_UINT32_BE(p, 0);
+ p += 4;
+ }
+#endif /* MBEDTLS_SSL_CLI_C */
+#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
+ if (8 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->ticket_creation_time = MBEDTLS_GET_UINT64_BE(p, 0);
+ p += 8;
+ }
+#endif /* MBEDTLS_HAVE_TIME && MBEDTLS_SSL_SRV_C */
+#endif /* MBEDTLS_SSL_SESSION_TICKETS */
+
+ /*
+ * Misc extension-related info
+ */
+#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
+ if (1 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->mfl_code = *p++;
+#endif
+
+#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
+ if (1 > (size_t) (end - p)) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ session->encrypt_then_mac = *p++;
+#endif
+
+ /* Done, should have consumed entire buffer */
+ if (p != end) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ return 0;
+}
+
+#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
+
+#if defined(MBEDTLS_SSL_PROTO_TLS1_3)
+/* Serialization of TLS 1.3 sessions:
+ *
+ * struct {
+ * opaque hostname<0..2^16-1>;
+ * uint64 ticket_reception_time;
+ * uint32 ticket_lifetime;
+ * opaque ticket<1..2^16-1>;
+ * } ClientOnlyData;
+ *
+ * struct {
+ * uint32 ticket_age_add;
+ * uint8 ticket_flags;
+ * opaque resumption_key<0..255>;
+ * uint32 max_early_data_size;
+ * uint16 record_size_limit;
+ * select ( endpoint ) {
+ * case client: ClientOnlyData;
+ * case server: uint64 ticket_creation_time;
+ * };
+ * } serialized_session_tls13;
+ *
+ */
+#if defined(MBEDTLS_SSL_SESSION_TICKETS)
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_session_save(const mbedtls_ssl_session *session,
+ unsigned char *buf,
+ size_t buf_len,
+ size_t *olen)
+{
+ unsigned char *p = buf;
+#if defined(MBEDTLS_SSL_CLI_C) && \
+ defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
+ size_t hostname_len = (session->hostname == NULL) ?
+ 0 : strlen(session->hostname) + 1;
+#endif
+ size_t needed = 4 /* ticket_age_add */
+ + 1 /* ticket_flags */
+ + 1; /* resumption_key length */
+ *olen = 0;
+
+ if (session->resumption_key_len > MBEDTLS_SSL_TLS1_3_TICKET_RESUMPTION_KEY_LEN) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ needed += session->resumption_key_len; /* resumption_key */
+
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+ needed += 4; /* max_early_data_size */
+#endif
+#if defined(MBEDTLS_SSL_RECORD_SIZE_LIMIT)
+ needed += 2; /* record_size_limit */
+#endif /* MBEDTLS_SSL_RECORD_SIZE_LIMIT */
+
+#if defined(MBEDTLS_HAVE_TIME)
+ needed += 8; /* ticket_creation_time or ticket_reception_time */
+#endif
+
+#if defined(MBEDTLS_SSL_CLI_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
+#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
+ needed += 2 /* hostname_len */
+ + hostname_len; /* hostname */
+#endif
+
+ needed += 4 /* ticket_lifetime */
+ + 2; /* ticket_len */
+
+ /* Check size_t overflow */
+ if (session->ticket_len > SIZE_MAX - needed) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ needed += session->ticket_len; /* ticket */
+ }
+#endif /* MBEDTLS_SSL_CLI_C */
+
+ *olen = needed;
+ if (needed > buf_len) {
+ return MBEDTLS_ERR_SSL_BUFFER_TOO_SMALL;
+ }
+
+ MBEDTLS_PUT_UINT32_BE(session->ticket_age_add, p, 0);
+ p[4] = session->ticket_flags;
+
+ /* save resumption_key */
+ p[5] = session->resumption_key_len;
+ p += 6;
+ memcpy(p, session->resumption_key, session->resumption_key_len);
+ p += session->resumption_key_len;
+
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+ MBEDTLS_PUT_UINT32_BE(session->max_early_data_size, p, 0);
+ p += 4;
+#endif
+#if defined(MBEDTLS_SSL_RECORD_SIZE_LIMIT)
+ MBEDTLS_PUT_UINT16_BE(session->record_size_limit, p, 0);
+ p += 2;
+#endif /* MBEDTLS_SSL_RECORD_SIZE_LIMIT */
+
+#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
+ MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_creation_time, p, 0);
+ p += 8;
+ }
+#endif /* MBEDTLS_HAVE_TIME */
+
+#if defined(MBEDTLS_SSL_CLI_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
+#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
+ MBEDTLS_PUT_UINT16_BE(hostname_len, p, 0);
+ p += 2;
+ if (hostname_len > 0) {
+ /* save host name */
+ memcpy(p, session->hostname, hostname_len);
+ p += hostname_len;
+ }
+#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
+
+#if defined(MBEDTLS_HAVE_TIME)
+ MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_reception_time, p, 0);
+ p += 8;
+#endif
+ MBEDTLS_PUT_UINT32_BE(session->ticket_lifetime, p, 0);
+ p += 4;
+
+ MBEDTLS_PUT_UINT16_BE(session->ticket_len, p, 0);
+ p += 2;
+
+ if (session->ticket != NULL && session->ticket_len > 0) {
+ memcpy(p, session->ticket, session->ticket_len);
+ p += session->ticket_len;
+ }
+ }
+#endif /* MBEDTLS_SSL_CLI_C */
+ return 0;
+}
+
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_session_load(mbedtls_ssl_session *session,
+ const unsigned char *buf,
+ size_t len)
+{
+ const unsigned char *p = buf;
+ const unsigned char *end = buf + len;
+
+ if (end - p < 6) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->ticket_age_add = MBEDTLS_GET_UINT32_BE(p, 0);
+ session->ticket_flags = p[4];
+
+ /* load resumption_key */
+ session->resumption_key_len = p[5];
+ p += 6;
+
+ if (end - p < session->resumption_key_len) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+
+ if (sizeof(session->resumption_key) < session->resumption_key_len) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ memcpy(session->resumption_key, p, session->resumption_key_len);
+ p += session->resumption_key_len;
+
+#if defined(MBEDTLS_SSL_EARLY_DATA)
+ if (end - p < 4) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->max_early_data_size = MBEDTLS_GET_UINT32_BE(p, 0);
+ p += 4;
+#endif
+#if defined(MBEDTLS_SSL_RECORD_SIZE_LIMIT)
+ if (end - p < 2) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->record_size_limit = MBEDTLS_GET_UINT16_BE(p, 0);
+ p += 2;
+#endif /* MBEDTLS_SSL_RECORD_SIZE_LIMIT */
+
+#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
+ if (end - p < 8) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->ticket_creation_time = MBEDTLS_GET_UINT64_BE(p, 0);
+ p += 8;
+ }
+#endif /* MBEDTLS_HAVE_TIME */
+
+#if defined(MBEDTLS_SSL_CLI_C)
+ if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
+#if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
+ size_t hostname_len;
+ /* load host name */
+ if (end - p < 2) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ hostname_len = MBEDTLS_GET_UINT16_BE(p, 0);
+ p += 2;
+
+ if (end - p < (long int) hostname_len) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ if (hostname_len > 0) {
+ session->hostname = mbedtls_calloc(1, hostname_len);
+ if (session->hostname == NULL) {
+ return MBEDTLS_ERR_SSL_ALLOC_FAILED;
+ }
+ memcpy(session->hostname, p, hostname_len);
+ p += hostname_len;
+ }
+#endif /* MBEDTLS_SSL_SERVER_NAME_INDICATION */
+
+#if defined(MBEDTLS_HAVE_TIME)
+ if (end - p < 8) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->ticket_reception_time = MBEDTLS_GET_UINT64_BE(p, 0);
+ p += 8;
+#endif
+ if (end - p < 4) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->ticket_lifetime = MBEDTLS_GET_UINT32_BE(p, 0);
+ p += 4;
+
+ if (end - p < 2) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ session->ticket_len = MBEDTLS_GET_UINT16_BE(p, 0);
+ p += 2;
+
+ if (end - p < (long int) session->ticket_len) {
+ return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
+ }
+ if (session->ticket_len > 0) {
+ session->ticket = mbedtls_calloc(1, session->ticket_len);
+ if (session->ticket == NULL) {
+ return MBEDTLS_ERR_SSL_ALLOC_FAILED;
+ }
+ memcpy(session->ticket, p, session->ticket_len);
+ p += session->ticket_len;
+ }
+ }
+#endif /* MBEDTLS_SSL_CLI_C */
+
+ return 0;
+
+}
+#else /* MBEDTLS_SSL_SESSION_TICKETS */
+MBEDTLS_CHECK_RETURN_CRITICAL
+static int ssl_tls13_session_save(const mbedtls_ssl_session *session,
+ unsigned char *buf,
+ size_t buf_len,
+ size_t *olen)
+{
+ ((void) session);
+ ((void) buf);
+ ((void) buf_len);
+ *olen = 0;
+ return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
+}
+
+static int ssl_tls13_session_load(const mbedtls_ssl_session *session,
+ unsigned char *buf,
+ size_t buf_len)
+{
+ ((void) session);
+ ((void) buf);
+ ((void) buf_len);
+ return MBEDTLS_ERR_SSL_FEATURE_UNAVAILABLE;
+}
+#endif /* !MBEDTLS_SSL_SESSION_TICKETS */
+#endif /* MBEDTLS_SSL_PROTO_TLS1_3 */
+
/*
* Define ticket header determining Mbed TLS version
* and structure of the ticket.
@@ -8982,385 +9360,6 @@
#endif /* MBEDTLS_KEY_EXCHANGE_WITH_CERT_ENABLED */
-/* Serialization of TLS 1.2 sessions:
- *
- * struct {
- * opaque ticket<0..2^24-1>; // length 0 means no ticket
- * uint32 ticket_lifetime;
- * } ClientOnlyData;
- *
- * struct {
- * uint64 start_time;
- * uint8 session_id_len; // at most 32
- * opaque session_id[32];
- * opaque master[48]; // fixed length in the standard
- * uint32 verify_result;
- * opaque peer_cert<0..2^24-1>; // length 0 means no peer cert
- * select (endpoint) {
- * case client: ClientOnlyData;
- * case server: uint64 ticket_creation_time;
- * };
- * uint8 mfl_code; // up to 255 according to standard
- * uint8 encrypt_then_mac; // 0 or 1
- * } serialized_session_tls12;
- */
-static size_t ssl_tls12_session_save(const mbedtls_ssl_session *session,
- unsigned char *buf,
- size_t buf_len)
-{
- unsigned char *p = buf;
- size_t used = 0;
-
-#if defined(MBEDTLS_HAVE_TIME)
- uint64_t start;
-#endif
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- size_t cert_len;
-#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
- /*
- * Time
- */
-#if defined(MBEDTLS_HAVE_TIME)
- used += 8;
-
- if (used <= buf_len) {
- start = (uint64_t) session->start;
-
- MBEDTLS_PUT_UINT64_BE(start, p, 0);
- p += 8;
- }
-#endif /* MBEDTLS_HAVE_TIME */
-
- /*
- * Basic mandatory fields
- */
- used += 1 /* id_len */
- + sizeof(session->id)
- + sizeof(session->master)
- + 4; /* verify_result */
-
- if (used <= buf_len) {
- *p++ = MBEDTLS_BYTE_0(session->id_len);
- memcpy(p, session->id, 32);
- p += 32;
-
- memcpy(p, session->master, 48);
- p += 48;
-
- MBEDTLS_PUT_UINT32_BE(session->verify_result, p, 0);
- p += 4;
- }
-
- /*
- * Peer's end-entity certificate
- */
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- if (session->peer_cert == NULL) {
- cert_len = 0;
- } else {
- cert_len = session->peer_cert->raw.len;
- }
-
- used += 3 + cert_len;
-
- if (used <= buf_len) {
- *p++ = MBEDTLS_BYTE_2(cert_len);
- *p++ = MBEDTLS_BYTE_1(cert_len);
- *p++ = MBEDTLS_BYTE_0(cert_len);
-
- if (session->peer_cert != NULL) {
- memcpy(p, session->peer_cert->raw.p, cert_len);
- p += cert_len;
- }
- }
-#else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
- if (session->peer_cert_digest != NULL) {
- used += 1 /* type */ + 1 /* length */ + session->peer_cert_digest_len;
- if (used <= buf_len) {
- *p++ = (unsigned char) session->peer_cert_digest_type;
- *p++ = (unsigned char) session->peer_cert_digest_len;
- memcpy(p, session->peer_cert_digest,
- session->peer_cert_digest_len);
- p += session->peer_cert_digest_len;
- }
- } else {
- used += 2;
- if (used <= buf_len) {
- *p++ = (unsigned char) MBEDTLS_MD_NONE;
- *p++ = 0;
- }
- }
-#endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
- /*
- * Session ticket if any, plus associated data
- */
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-#if defined(MBEDTLS_SSL_CLI_C)
- if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
- used += 3 + session->ticket_len + 4; /* len + ticket + lifetime */
-
- if (used <= buf_len) {
- *p++ = MBEDTLS_BYTE_2(session->ticket_len);
- *p++ = MBEDTLS_BYTE_1(session->ticket_len);
- *p++ = MBEDTLS_BYTE_0(session->ticket_len);
-
- if (session->ticket != NULL) {
- memcpy(p, session->ticket, session->ticket_len);
- p += session->ticket_len;
- }
-
- MBEDTLS_PUT_UINT32_BE(session->ticket_lifetime, p, 0);
- p += 4;
- }
- }
-#endif /* MBEDTLS_SSL_CLI_C */
-#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
- if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
- used += 8;
-
- if (used <= buf_len) {
- MBEDTLS_PUT_UINT64_BE((uint64_t) session->ticket_creation_time, p, 0);
- p += 8;
- }
- }
-#endif /* MBEDTLS_HAVE_TIME && MBEDTLS_SSL_SRV_C */
-#endif /* MBEDTLS_SSL_SESSION_TICKETS */
-
- /*
- * Misc extension-related info
- */
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
- used += 1;
-
- if (used <= buf_len) {
- *p++ = session->mfl_code;
- }
-#endif
-
-#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
- used += 1;
-
- if (used <= buf_len) {
- *p++ = MBEDTLS_BYTE_0(session->encrypt_then_mac);
- }
-#endif
-
- return used;
-}
-
-MBEDTLS_CHECK_RETURN_CRITICAL
-static int ssl_tls12_session_load(mbedtls_ssl_session *session,
- const unsigned char *buf,
- size_t len)
-{
-#if defined(MBEDTLS_HAVE_TIME)
- uint64_t start;
-#endif
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- size_t cert_len;
-#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
- const unsigned char *p = buf;
- const unsigned char * const end = buf + len;
-
- /*
- * Time
- */
-#if defined(MBEDTLS_HAVE_TIME)
- if (8 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- start = MBEDTLS_GET_UINT64_BE(p, 0);
- p += 8;
-
- session->start = (time_t) start;
-#endif /* MBEDTLS_HAVE_TIME */
-
- /*
- * Basic mandatory fields
- */
- if (1 + 32 + 48 + 4 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->id_len = *p++;
- memcpy(session->id, p, 32);
- p += 32;
-
- memcpy(session->master, p, 48);
- p += 48;
-
- session->verify_result = MBEDTLS_GET_UINT32_BE(p, 0);
- p += 4;
-
- /* Immediately clear invalid pointer values that have been read, in case
- * we exit early before we replaced them with valid ones. */
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- session->peer_cert = NULL;
-#else
- session->peer_cert_digest = NULL;
-#endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-#if defined(MBEDTLS_SSL_SESSION_TICKETS) && defined(MBEDTLS_SSL_CLI_C)
- session->ticket = NULL;
-#endif /* MBEDTLS_SSL_SESSION_TICKETS && MBEDTLS_SSL_CLI_C */
-
- /*
- * Peer certificate
- */
-#if defined(MBEDTLS_X509_CRT_PARSE_C)
-#if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
- /* Deserialize CRT from the end of the ticket. */
- if (3 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- cert_len = MBEDTLS_GET_UINT24_BE(p, 0);
- p += 3;
-
- if (cert_len != 0) {
- int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
-
- if (cert_len > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->peer_cert = mbedtls_calloc(1, sizeof(mbedtls_x509_crt));
-
- if (session->peer_cert == NULL) {
- return MBEDTLS_ERR_SSL_ALLOC_FAILED;
- }
-
- mbedtls_x509_crt_init(session->peer_cert);
-
- if ((ret = mbedtls_x509_crt_parse_der(session->peer_cert,
- p, cert_len)) != 0) {
- mbedtls_x509_crt_free(session->peer_cert);
- mbedtls_free(session->peer_cert);
- session->peer_cert = NULL;
- return ret;
- }
-
- p += cert_len;
- }
-#else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
- /* Deserialize CRT digest from the end of the ticket. */
- if (2 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->peer_cert_digest_type = (mbedtls_md_type_t) *p++;
- session->peer_cert_digest_len = (size_t) *p++;
-
- if (session->peer_cert_digest_len != 0) {
- const mbedtls_md_info_t *md_info =
- mbedtls_md_info_from_type(session->peer_cert_digest_type);
- if (md_info == NULL) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- if (session->peer_cert_digest_len != mbedtls_md_get_size(md_info)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- if (session->peer_cert_digest_len > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->peer_cert_digest =
- mbedtls_calloc(1, session->peer_cert_digest_len);
- if (session->peer_cert_digest == NULL) {
- return MBEDTLS_ERR_SSL_ALLOC_FAILED;
- }
-
- memcpy(session->peer_cert_digest, p,
- session->peer_cert_digest_len);
- p += session->peer_cert_digest_len;
- }
-#endif /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
-#endif /* MBEDTLS_X509_CRT_PARSE_C */
-
- /*
- * Session ticket and associated data
- */
-#if defined(MBEDTLS_SSL_SESSION_TICKETS)
-#if defined(MBEDTLS_SSL_CLI_C)
- if (session->endpoint == MBEDTLS_SSL_IS_CLIENT) {
- if (3 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->ticket_len = MBEDTLS_GET_UINT24_BE(p, 0);
- p += 3;
-
- if (session->ticket_len != 0) {
- if (session->ticket_len > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->ticket = mbedtls_calloc(1, session->ticket_len);
- if (session->ticket == NULL) {
- return MBEDTLS_ERR_SSL_ALLOC_FAILED;
- }
-
- memcpy(session->ticket, p, session->ticket_len);
- p += session->ticket_len;
- }
-
- if (4 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->ticket_lifetime = MBEDTLS_GET_UINT32_BE(p, 0);
- p += 4;
- }
-#endif /* MBEDTLS_SSL_CLI_C */
-#if defined(MBEDTLS_HAVE_TIME) && defined(MBEDTLS_SSL_SRV_C)
- if (session->endpoint == MBEDTLS_SSL_IS_SERVER) {
- if (8 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
- session->ticket_creation_time = MBEDTLS_GET_UINT64_BE(p, 0);
- p += 8;
- }
-#endif /* MBEDTLS_HAVE_TIME && MBEDTLS_SSL_SRV_C */
-#endif /* MBEDTLS_SSL_SESSION_TICKETS */
-
- /*
- * Misc extension-related info
- */
-#if defined(MBEDTLS_SSL_MAX_FRAGMENT_LENGTH)
- if (1 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->mfl_code = *p++;
-#endif
-
-#if defined(MBEDTLS_SSL_ENCRYPT_THEN_MAC)
- if (1 > (size_t) (end - p)) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- session->encrypt_then_mac = *p++;
-#endif
-
- /* Done, should have consumed entire buffer */
- if (p != end) {
- return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
- }
-
- return 0;
-}
#endif /* MBEDTLS_SSL_PROTO_TLS1_2 */
int mbedtls_ssl_validate_ciphersuite(