hcq/MaxScale
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Fix for CRC in fake rotate events

Browse Source
This commit is contained in:
Mark Riddoch
2015-01-30 14:55:14 +00:00
parent a786d76852
commit 5ac736a14e
2 changed files with 32 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
server/modules/routing/binlog/blr_master.c
View File

@ -681,6 +681,11 @@ static REP_HEADER phdr;
}
pkt_length = gwbuf_length(pkt);
/*
* Loop over all the packets while we still have some data
* and the packet length is enough to hold a replication event
* header.
*/
while (pkt && pkt_length > 24)
{
reslen = GWBUF_LENGTH(pkt);
@ -708,6 +713,7 @@ static REP_HEADER phdr;
{
len = EXTRACT24(pdata) + 4;
}
/* len is now the payload length for the packet we are working on */
if (reslen < len && pkt_length >= len)
{
@ -787,10 +793,17 @@ static REP_HEADER phdr;
n_bufs = 1;
}
/*
* ptr now points at the current message in a contiguous buffer,
* this buffer is either within the GWBUF or in a malloc'd
* copy if the message straddles GWBUF's.
*/
if (len < BINLOG_EVENT_HDR_LEN)
{
char *msg = "";
/* Packet is too small to be a binlog event */
if (ptr[4] == 0xfe) /* EOF Packet */
{
msg = "end of file";
@ -812,7 +825,7 @@ static REP_HEADER phdr;
blr_extract_header(ptr, &hdr);
if (hdr.event_size != len - 5)
if (hdr.event_size != len - 5) /* Sanity check */
{
LOGIF(LE,(skygw_log_write(
LOGFILE_ERROR,
@ -843,8 +856,10 @@ static REP_HEADER phdr;
phdr = hdr;
if (hdr.ok == 0)
{
#define CHECK_CRC 1
#if CHECK_CRC
/*
* First check that the checksum we calculate matches the
* checksum in the packet we received.
*/
uint32_t chksum, pktsum;
chksum = crc32(0L, NULL, 0);
@ -870,7 +885,6 @@ static REP_HEADER phdr;
blr_master_delayed_connect(router);
return;
}
#endif
router->stats.n_binlogs++;
router->lastEventReceived = hdr.event_type;