Give WPACKET the ability to have a NULL buffer underneath it

[openssl.git] / include / internal / packet.h

diff --git a/include/internal/packet.h b/include/internal/packet.h
index 9f8a09862057e94f06bb2d0603cd340d8d2bbbef..69a6bd1308095c07e3dad73a38a9021113e0949b 100644 (file)
--- a/include/internal/packet.h
+++ b/include/internal/packet.h
@@ -669,6 +669,13 @@ int WPACKET_init_len(WPACKET *pkt, BUF_MEM *buf, size_t lenbytes);
  */
 int WPACKET_init(WPACKET *pkt, BUF_MEM *buf);
 
+/*
+ * Same as WPACKET_init_len except there is no underlying buffer. No data is
+ * ever actually written. We just keep track of how much data would have been
+ * written if a buffer was there.
+ */
+int WPACKET_init_null(WPACKET *pkt, size_t lenbytes);
+
 /*
  * Same as WPACKET_init_len except we do not use a growable BUF_MEM structure.
  * A fixed buffer of memory |buf| of size |len| is used instead. A failure will
@@ -868,6 +875,9 @@ int WPACKET_get_length(WPACKET *pkt, size_t *len);
  */
 unsigned char *WPACKET_get_curr(WPACKET *pkt);
 
+/* Returns true if the underlying buffer is actually NULL */
+int WPACKET_is_null_buf(WPACKET *pkt);
+
 /* Release resources in a WPACKET if a failure has occurred. */
 void WPACKET_cleanup(WPACKET *pkt);