Implement custom extensions.
This change mirrors upstream's custom extension API because we have some
internal users that depend on it.
Change-Id: I408e442de0a55df7b05c872c953ff048cd406513
Reviewed-on: https://boringssl-review.googlesource.com/5471
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/internal.h b/ssl/internal.h
index a63c0cd..f19a265 100644
--- a/ssl/internal.h
+++ b/ssl/internal.h
@@ -364,6 +364,29 @@
SSL *ssl, uint8_t *out, size_t *out_len, size_t max_out);
+/* Custom extensions */
+
+/* ssl_custom_extension (a.k.a. SSL_CUSTOM_EXTENSION) is a structure that
+ * contains information about custom-extension callbacks. */
+struct ssl_custom_extension {
+ SSL_custom_ext_add_cb add_callback;
+ void *add_arg;
+ SSL_custom_ext_free_cb free_callback;
+ SSL_custom_ext_parse_cb parse_callback;
+ void *parse_arg;
+ uint16_t value;
+};
+
+void SSL_CUSTOM_EXTENSION_free(SSL_CUSTOM_EXTENSION *custom_extension);
+
+int custom_ext_add_clienthello(SSL *ssl, CBB *extensions);
+int custom_ext_parse_serverhello(SSL *ssl, int *out_alert, uint16_t value,
+ const CBS *extension);
+int custom_ext_parse_clienthello(SSL *ssl, int *out_alert, uint16_t value,
+ const CBS *extension);
+int custom_ext_add_serverhello(SSL *ssl, CBB *extensions);
+
+
/* Underdocumented functions.
*
* Functions below here haven't been touched up and may be underdocumented. */
