feedc0de/wolfssl
1
0
Fork 0
forked from wolfSSL/wolfssl
Code Pull Requests Activity

allow storage of out of order zero length DTLS handshake messages

Browse Source
This commit is contained in:
John Safranek
2015-06-17 12:37:10 -07:00
parent 19cad21a46
commit 7d9a1ccf42
1 changed files with 3 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
src/internal.c
View File

@@ -2147,14 +2147,15 @@ void DtlsMsgSet(DtlsMsg* msg, word32 seq, const byte* data, byte type,
word32 fragOffset, word32 fragSz) word32 fragOffset, word32 fragSz)
{ {
if (msg != NULL && data != NULL && msg->fragSz <= msg->sz && if (msg != NULL && data != NULL && msg->fragSz <= msg->sz &&
fragOffset < msg->sz && (fragOffset + fragSz) <= msg->sz) { fragOffset <= msg->sz && (fragOffset + fragSz) <= msg->sz) {
msg->seq = seq; msg->seq = seq;
msg->type = type; msg->type = type;
msg->fragSz += fragSz; msg->fragSz += fragSz;
/* If fragOffset is zero, this is either a full message that is out /* If fragOffset is zero, this is either a full message that is out
* of order, or the first fragment of a fragmented message. Copy the * of order, or the first fragment of a fragmented message. Copy the
* handshake message header as well as the message data. */ * handshake message header with the message data. Zero length messages
* like Server Hello Done should be saved as well. */
if (fragOffset == 0) if (fragOffset == 0)
XMEMCPY(msg->buf, data - DTLS_HANDSHAKE_HEADER_SZ, XMEMCPY(msg->buf, data - DTLS_HANDSHAKE_HEADER_SZ,
fragSz + DTLS_HANDSHAKE_HEADER_SZ); fragSz + DTLS_HANDSHAKE_HEADER_SZ);