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Bug#20432: mysql client interprets commands in comments

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do not look for client-specific commands while inside a multi-line comment.
we will allow multi-comments pretty much anywhere within SQL-statements,
but client-specific commands (help, use, print, ...) must be the first token
in the input.
This commit is contained in:
tnurnberg@mysql.com/salvation.intern.azundris.com 2006-07-13 09:04:06 +02:00
parent 22485908ce
commit 4be51e1644
3 changed files with 34 additions and 1 deletions
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2
client/mysql.cc
View file

@ -1052,7 +1052,7 @@ static int read_lines(bool execute_commands)
(We want to allow help, print and clear anywhere at line start
*/
if (execute_commands && (named_cmds || glob_buffer.is_empty())
&& !in_string && (com=find_command(line,0)))
&& !ml_comment && !in_string && (com=find_command(line,0)))
{
if ((*com->func)(&glob_buffer,line) > 0)
break;

4
mysql-test/r/mysql_client.result Normal file
View file

@ -0,0 +1,4 @@
1
1
ERROR 1064 (42000) at line 3: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
ERROR at line 1: USE must be followed by a database name

29
mysql-test/t/mysql_client.test Normal file
View file

@ -0,0 +1,29 @@
# This test should work in embedded server after we fix mysqltest
-- source include/not_embedded.inc
#
# Bug #20432: mysql client interprets commands in comments
#
# if the client sees the 'use' within the comment, we haven't fixed
--exec echo "/*" > $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec echo "use" >> $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec echo "*/" >> $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec $MYSQL < $MYSQLTEST_VARDIR/tmp/bug20432.sql 2>&1
# SQL can have embedded comments => workie
--exec echo "select /*" > $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec echo "use" >> $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec echo "*/ 1" >> $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec $MYSQL < $MYSQLTEST_VARDIR/tmp/bug20432.sql 2>&1
# client commands on the other hand must be at BOL => error
--exec echo "/*" > $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec echo "xxx" >> $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec echo "*/ use" >> $MYSQLTEST_VARDIR/tmp/bug20432.sql
--error 1
--exec $MYSQL < $MYSQLTEST_VARDIR/tmp/bug20432.sql 2>&1
# client comment recognized, but parameter missing => error
--exec echo "use" > $MYSQLTEST_VARDIR/tmp/bug20432.sql
--exec $MYSQL < $MYSQLTEST_VARDIR/tmp/bug20432.sql 2>&1