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maxbinlogcheck detects START_ENCRYPTION_EVENT

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maxbinlogcheck now detects the START_ENCRYPTION_EVENT found in MariaDB
binlog file and in the maxscale binlog
This commit is contained in:
MassimilianoPinto
2016-09-22 11:00:42 +02:00
parent d9238afe58
commit b6efb81fa8
1 changed files with 53 additions and 17 deletions
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68
server/modules/routing/binlog/blr_file.c
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@ -1128,6 +1128,7 @@ blr_read_events_all_events(ROUTER_INSTANCE *router, int fix, int debug)
BINLOG_EVENT_DESC last_event;
BINLOG_EVENT_DESC fde_event;
int fde_seen = 0;
int start_encryption_seen = 0;
memset(&first_event, '\0', sizeof(first_event));
memset(&last_event, '\0', sizeof(last_event));
@ -1491,8 +1492,6 @@ blr_read_events_all_events(ROUTER_INSTANCE *router, int fix, int debug)
if (hdr.event_type == FORMAT_DESCRIPTION_EVENT)
{
int event_header_length;
int fde_extra_bytes = 0;
int n_events;
int check_alg;
uint8_t *checksum;
char buf_t[40];
@ -1535,10 +1534,10 @@ blr_read_events_all_events(ROUTER_INSTANCE *router, int fix, int debug)
/* The number of supported events formula:
* number_of_events = event_size - (event_header_len + BLRM_FDE_EVENT_TYPES_OFFSET)
*/
n_events = hdr.event_size - event_header_length - BLRM_FDE_EVENT_TYPES_OFFSET;
int n_events = hdr.event_size - event_header_length - BLRM_FDE_EVENT_TYPES_OFFSET;
/**
* The FDE event also carries 5 additional bytes number of events:
* The FDE event also carries 5 additional bytes:
*
* 1 byte is the checksum_alg_type and 4 bytes are the computed crc32
*
@ -1547,20 +1546,10 @@ blr_read_events_all_events(ROUTER_INSTANCE *router, int fix, int debug)
*
* In case of CRC32 algo_type the 4 bytes contain the event crc32.
*/
fde_extra_bytes = BINLOG_EVENT_CRC_ALGO_TYPE + BINLOG_EVENT_CRC_SIZE;
int fde_extra_bytes = BINLOG_EVENT_CRC_ALGO_TYPE + BINLOG_EVENT_CRC_SIZE;
/* Now remove from number of events the extra 5 bytes */
/* mariadb 10 LOG_EVENT_TYPES >= 160 */
if ( n_events >= 160 + 5)
{
/* Now remove from the calculated number of events the extra 5 bytes */
n_events -= fde_extra_bytes;
}
else
{
/* mysql 5.6 LOG_EVENT_TYPES is 35 */
n_events -= fde_extra_bytes;
}
if (debug)
{
@ -1593,6 +1582,53 @@ blr_read_events_all_events(ROUTER_INSTANCE *router, int fix, int debug)
}
}
/* Detect possible Start Encryption Event */
if (hdr.event_type == MARIADB10_START_ENCRYPTION_EVENT)
{
START_ENCRYPTION_EVENT ste_event;
memset(&ste_event, '\0', sizeof(START_ENCRYPTION_EVENT));
char nonce_hex[12 * 2 + 1] = "";
/* The start encryption event data is 17 bytes long:
* Scheme = 1
* Key Version: 4
* nonce = 12
*/
/* Fill the event content, after the event header */
ste_event.binlog_crypto_scheme = ptr[0];
ste_event.binlog_key_version = extract_field(ptr + 1, 32);
memcpy(ste_event.nonce, ptr + 1 + 4, BLRM_NONCE_LENGTH);
gw_bin2hex(nonce_hex, ste_event.nonce, BLRM_NONCE_LENGTH);
if (debug)
{
char *cksum_format = ", crc32 0x";
char hex_checksum[BINLOG_EVENT_CRC_SIZE * 2 + strlen(cksum_format) + 1];
uint8_t cksum_data[BINLOG_EVENT_CRC_SIZE];
cksum_data[3] = *(ptr + hdr.event_size - 4 - BINLOG_EVENT_HDR_LEN);
cksum_data[2] = *(ptr + hdr.event_size - 3 - BINLOG_EVENT_HDR_LEN);
cksum_data[1] = *(ptr + hdr.event_size - 2 - BINLOG_EVENT_HDR_LEN);
cksum_data[0] = *(ptr + hdr.event_size - 1 - BINLOG_EVENT_HDR_LEN);
if (found_chksum)
{
strcpy(hex_checksum, cksum_format);
gw_bin2hex(hex_checksum + strlen(cksum_format) , cksum_data, BINLOG_EVENT_CRC_SIZE);
}
MXS_DEBUG("- START_ENCRYPTION event @ %llu, size %lu, next pos is @ %lu, flags %u%s",
pos, (unsigned long)hdr.event_size, (unsigned long)hdr.next_pos, hdr.flags,
hex_checksum);
MXS_DEBUG(" Encryption scheme: %u, key_version: %u,"
" nonce: %s\n", ste_event.binlog_crypto_scheme,
ste_event.binlog_key_version, nonce_hex);
}
start_encryption_seen = 1;
}
/* set last event time, pos and type */
last_event.event_time = (unsigned long)hdr.timestamp;
last_event.event_type = hdr.event_type;