Add functions for accessing read_sequence and write_sequence.
OpenSSL 1.1.0 doesn't seem to have these two, so this isn't based on anything.
Have them return uint64_t in preparation for switching the internal
representation to uint64_t so ssl_record_sequence_update can go away.
Change-Id: I21d55e9a29861c992f409ed293e0930a7aaef7a3
Reviewed-on: https://boringssl-review.googlesource.com/6941
Reviewed-by: Adam Langley <alangley@gmail.com>
diff --git a/include/openssl/ssl.h b/include/openssl/ssl.h
index 8efbd4f..e8fbced 100644
--- a/include/openssl/ssl.h
+++ b/include/openssl/ssl.h
@@ -2574,7 +2574,7 @@
CRYPTO_EX_free *free_func);
-/* Obscure functions. */
+/* Low-level record-layer state. */
/* SSL_get_rc4_state sets |*read_key| and |*write_key| to the RC4 states for
* the read and write directions. It returns one on success or zero if |ssl|
@@ -2600,6 +2600,17 @@
OPENSSL_EXPORT int SSL_generate_key_block(const SSL *ssl, uint8_t *out,
size_t out_len);
+/* SSL_get_read_sequence returns the expected sequence number of the next
+ * incoming record in the current epoch. It always returns zero in DTLS. */
+OPENSSL_EXPORT uint64_t SSL_get_read_sequence(const SSL *ssl);
+
+/* SSL_get_write_sequence returns the sequence number of the next outgoing
+ * record in the current epoch. */
+OPENSSL_EXPORT uint64_t SSL_get_write_sequence(const SSL *ssl);
+
+
+/* Obscure functions. */
+
/* SSL_get_structure_sizes returns the sizes of the SSL, SSL_CTX and
* SSL_SESSION structures so that a test can ensure that outside code agrees on
* these values. */
