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/* Copyright (C) 2005 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#include "mysql_priv.h"
#include "base64.h"
/*
Execute a BINLOG statement
TODO: This currently assumes a MySQL 5.x binlog.
When we'll have binlog with a different format, to execute the
BINLOG command properly the server will need to know which format
the BINLOG command's event is in. mysqlbinlog should then send
the Format_description_log_event of the binlog it reads and the
server thread should cache this format into
rli->description_event_for_exec.
*/
void mysql_client_binlog_statement(THD* thd)
{
DBUG_PRINT("info",("binlog base64: '%*s'",
(thd->lex->comment.length < 2048 ?
thd->lex->comment.length : 2048),
thd->lex->comment.str));
/*
Temporarily turn off send_ok, since different events handle this
differently
*/
my_bool nsok= thd->net.no_send_ok;
thd->net.no_send_ok= TRUE;
const my_size_t coded_len= thd->lex->comment.length + 1;
const my_size_t event_len= base64_needed_decoded_length(coded_len);
DBUG_ASSERT(coded_len > 0);
/*
Allocation
*/
if (!thd->rli_fake)
thd->rli_fake= new RELAY_LOG_INFO;
const Format_description_log_event *desc=
new Format_description_log_event(4);
const char *error= 0;
char *buf= (char *) my_malloc(event_len, MYF(MY_WME));
Log_event *ev = 0;
int res;
/*
Out of memory check
*/
if (!(thd->rli_fake && desc && buf))
{
my_error(ER_OUTOFMEMORY, MYF(0), 1); /* needed 1 bytes */
goto end;
}
thd->rli_fake->sql_thd= thd;
thd->rli_fake->no_storage= TRUE;
res= base64_decode(thd->lex->comment.str, coded_len, buf);
DBUG_PRINT("info",("binlog base64 decoded_len=%d, event_len=%d\n",
res, uint4korr(buf + EVENT_LEN_OFFSET)));
/*
Note that 'res' is the correct event length, 'event_len' was
calculated based on the base64-string that possibly contained
extra spaces, so it can be longer than the real event.
*/
if (res < EVENT_LEN_OFFSET
|| (uint) res != uint4korr(buf+EVENT_LEN_OFFSET))
{
my_error(ER_SYNTAX_ERROR, MYF(0));
goto end;
}
ev= Log_event::read_log_event(buf, res, &error, desc);
DBUG_PRINT("info",("binlog base64 err=%s", error));
if (!ev)
{
/*
This could actually be an out-of-memory, but it is more
likely causes by a bad statement
*/
my_error(ER_SYNTAX_ERROR, MYF(0));
goto end;
}
DBUG_PRINT("info",("ev->get_type_code()=%d", ev->get_type_code()));
DBUG_PRINT("info",("buf+EVENT_TYPE_OFFSET=%d", buf+EVENT_TYPE_OFFSET));
ev->thd= thd;
if (ev->exec_event(thd->rli_fake))
{
my_error(ER_UNKNOWN_ERROR, MYF(0), "Error executing BINLOG statement");
goto end;
}
/*
Restore setting of no_send_ok
*/
thd->net.no_send_ok= nsok;
DBUG_PRINT("info",("binlog base64 execution finished successfully"));
send_ok(thd);
end:
/*
Restore setting of no_send_ok
*/
thd->net.no_send_ok= nsok;
if (ev)
delete ev;
if (desc)
delete desc;
if (buf)
my_free(buf, MYF(0));
}
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