Provide a new WPACKET function for filling in all the lengths

[openssl.git] / ssl / packet_locl.h

diff --git a/ssl/packet_locl.h b/ssl/packet_locl.h
index 61233d9b6a041a70165cb27fab0341a0913ab04c..cd702653370f61c561dc4938a2363e63cfc17b3d 100644 (file)
--- a/ssl/packet_locl.h
+++ b/ssl/packet_locl.h
@@ -699,6 +699,15 @@ int WPACKET_close(WPACKET *pkt);
  */
 int WPACKET_finish(WPACKET *pkt);
 
+/*
+ * Iterates through all the sub-packets and writes out their lengths as if they
+ * were being closed. The lengths will be overwritten with the final lengths
+ * when the sub-packets are eventually closed (which may be different if more
+ * data is added to the WPACKET). This function will fail if a sub-packet is of
+ * 0 length and WPACKET_FLAGS_ABANDON_ON_ZERO_LENGTH is used.
+ */
+int WPACKET_fill_lengths(WPACKET *pkt);
+
 /*
  * Initialise a new sub-packet. Additionally |lenbytes| of data is preallocated
  * at the start of the sub-packet to store its length once we know it. Don't