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Fix table map event processing

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The table name is also null-terminated so the length plus one byte needs
to be skipped.

If the table map event is not used immediately after the event is read,
the column types would point to possibly freed memory. To avoid this,
memory should be allocated for it.
This commit is contained in:
Markus Mäkelä
2019-01-02 07:28:45 +02:00
parent 3b3b492901
commit cb013c2c3d
2 changed files with 5 additions and 3 deletions
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6
libmariadb/mariadb_rpl.c
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@@ -246,8 +246,10 @@ MARIADB_RPL_EVENT * STDCALL mariadb_rpl_fetch(MARIADB_RPL *rpl, MARIADB_RPL_EVEN
goto mem_error;
ev+= len + 1;
rpl_event->event.table_map.column_count= mysql_net_field_length(&ev);
rpl_event->event.table_map.column_types= (char *)ev;
ev+= rpl_event->event.table_map.column_count;
len= rpl_event->event.table_map.column_count;
if (rpl_alloc_string(rpl_event, &rpl_event->event.table_map.column_types, ev, len))
goto mem_error;
ev+= len;
len= mysql_net_field_length(&ev);
if (rpl_alloc_string(rpl_event, &rpl_event->event.table_map.metadata, ev, len))
goto mem_error;