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Code Activity

Fixed memory leaks in SP

Browse Source 
Some code cleanup


mysql-test/r/sp.result:
  Update results after adding quotes around function/procedure names
sql/sp.cc:
  Moved DBUG_ENTER after all variable declarations
  Eliminated some variables.
  Added more DBUG_ENTER commands.
  Added memory allocation checking in create_string()
  Fixed memory leak in sp_show_create_function()
  Removed usage of sprintf
sql/sql_parse.cc:
  Simple cleanup
  Fixed memory leaks for mailformed SP definitions
This commit is contained in:
unknown
2003-12-21 12:48:03 +02:00
parent 292bb8cbbe
commit c466a191d9
3 changed files with 146 additions and 161 deletions
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8
mysql-test/r/sp.result
View File

@ -732,7 +732,7 @@ delete from t1|
alter procedure chistics sql security invoker name chistics2|
show create procedure chistics2|
Procedure Create Procedure
chistics2 CREATE PROCEDURE chistics2()
chistics2 CREATE PROCEDURE `chistics2`()
SQL SECURITY INVOKER
COMMENT 'Characteristics procedure test'
insert into t1 values ("chistics", 1)
@ -749,7 +749,7 @@ chistics()
alter function chistics name chistics2 comment 'Characteristics function test'|
show create function chistics2|
Function Create Function
chistics2 CREATE FUNCTION chistics2() RETURNS int
chistics2 CREATE FUNCTION `chistics2`() RETURNS int
DETERMINISTIC
SQL SECURITY INVOKER
COMMENT 'Characteristics function test'
@ -999,7 +999,7 @@ end while;
end|
show create procedure opp|
Procedure Create Procedure
opp CREATE PROCEDURE opp(n bigint unsigned, out pp bool)
opp CREATE PROCEDURE `opp`(n bigint unsigned, out pp bool)
begin
declare r double;
declare b, s bigint unsigned default 0;
@ -1096,7 +1096,7 @@ alter procedure bar2 name bar comment "3333333333"|
alter procedure bar|
show create procedure bar|
Procedure Create Procedure
bar CREATE PROCEDURE bar(x char(16), y int)
bar CREATE PROCEDURE `bar`(x char(16), y int)
COMMENT '3333333333'
insert into test.t1 values (x, y)
show procedure status like 'bar'|

189
sql/sp.cc
View File

@ -61,13 +61,13 @@ static int
db_find_routine_aux(THD *thd, int type, char *name, uint namelen,
enum thr_lock_type ltype, TABLE **tablep, bool *opened)
{
DBUG_ENTER("db_find_routine_aux");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
TABLE *table;
byte key[64+64+1]; // db, name, type
uint keylen;
DBUG_ENTER("db_find_routine_aux");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
// Put the key together
// Put the key used to read the row together
memset(key, (int)' ', 64); // QQ Empty db for now
keylen= namelen;
if (keylen > 64)
@ -110,11 +110,10 @@ db_find_routine_aux(THD *thd, int type, char *name, uint namelen,
DBUG_RETURN(SP_OK);
}
static int
db_find_routine(THD *thd, int type, char *name, uint namelen, sp_head **sphp)
{
DBUG_ENTER("db_find_routine");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
extern int yyparse(void *thd);
TABLE *table;
const char *params, *returns, *body;
@ -129,6 +128,8 @@ db_find_routine(THD *thd, int type, char *name, uint namelen, sp_head **sphp)
char buff[65];
String str(buff, sizeof(buff), &my_charset_bin);
ulong sql_mode;
DBUG_ENTER("db_find_routine");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
ret= db_find_routine_aux(thd, type, name, namelen, TL_READ, &table, &opened);
if (ret != SP_OK)
@ -202,8 +203,8 @@ db_find_routine(THD *thd, int type, char *name, uint namelen, sp_head **sphp)
if (opened)
{
close_thread_tables(thd, 0, 1);
opened= FALSE;
close_thread_tables(thd, 0, 1);
}
{
@ -217,13 +218,18 @@ db_find_routine(THD *thd, int type, char *name, uint namelen, sp_head **sphp)
thd->variables.sql_mode= sql_mode;
thd->variables.select_limit= HA_POS_ERROR;
defstr= create_string(thd, &deflen,
if (!(defstr= create_string(thd, &deflen,
type,
name, namelen,
params, strlen(params),
returns, strlen(returns),
body, strlen(body),
&chistics);
&chistics)))
{
ret= SP_INTERNAL_ERROR;
goto done;
}
lex_start(thd, (uchar*)defstr, deflen);
if (yyparse(thd) || thd->is_fatal_error || thd->lex->sphead == NULL)
{
@ -256,15 +262,16 @@ db_find_routine(THD *thd, int type, char *name, uint namelen, sp_head **sphp)
DBUG_RETURN(ret);
}
static int
db_create_routine(THD *thd, int type, sp_head *sp)
{
DBUG_ENTER("db_create_routine");
DBUG_PRINT("enter", ("type: %d name: %*s",type,sp->m_name.length,sp->m_name.str));
int ret;
TABLE *table;
TABLE_LIST tables;
char definer[HOSTNAME_LENGTH+USERNAME_LENGTH+2];
DBUG_ENTER("db_create_routine");
DBUG_PRINT("enter", ("type: %d name: %*s",type,sp->m_name.length,sp->m_name.str));
memset(&tables, 0, sizeof(tables));
tables.db= (char*)"mysql";
@ -310,10 +317,9 @@ db_create_routine(THD *thd, int type, sp_head *sp)
store(sp->m_chistics->comment.str, sp->m_chistics->comment.length,
system_charset_info);
ret= SP_OK;
if (table->file->write_row(table->record[0]))
ret= SP_WRITE_ROW_FAILED;
else
ret= SP_OK;
}
done:
@ -321,14 +327,15 @@ done:
DBUG_RETURN(ret);
}
static int
db_drop_routine(THD *thd, int type, char *name, uint namelen)
{
DBUG_ENTER("db_drop_routine");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
TABLE *table;
int ret;
bool opened;
DBUG_ENTER("db_drop_routine");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
ret= db_find_routine_aux(thd, type, name, namelen, TL_WRITE, &table, &opened);
if (ret == SP_OK)
@ -342,16 +349,17 @@ db_drop_routine(THD *thd, int type, char *name, uint namelen)
DBUG_RETURN(ret);
}
static int
db_update_routine(THD *thd, int type, char *name, uint namelen,
char *newname, uint newnamelen,
st_sp_chistics *chistics)
{
DBUG_ENTER("db_update_routine");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
TABLE *table;
int ret;
bool opened;
DBUG_ENTER("db_update_routine");
DBUG_PRINT("enter", ("type: %d name: %*s", type, namelen, name));
ret= db_find_routine_aux(thd, type, name, namelen, TL_WRITE, &table, &opened);
if (ret == SP_OK)
@ -376,6 +384,7 @@ db_update_routine(THD *thd, int type, char *name, uint namelen,
DBUG_RETURN(ret);
}
struct st_used_field
{
const char *field_name;
@ -396,6 +405,7 @@ static struct st_used_field init_fields[]=
{ 0, 0, MYSQL_TYPE_STRING, 0}
};
static int
print_field_values(THD *thd, TABLE *table,
struct st_used_field *used_fields,
@ -444,14 +454,14 @@ print_field_values(THD *thd, TABLE *table,
return SP_OK;
}
static int
db_show_routine_status(THD *thd, int type, const char *wild)
{
DBUG_ENTER("db_show_routine_status");
TABLE *table;
TABLE_LIST tables;
int res;
DBUG_ENTER("db_show_routine_status");
memset(&tables, 0, sizeof(tables));
tables.db= (char*)"mysql";
@ -513,10 +523,7 @@ db_show_routine_status(THD *thd, int type, const char *wild)
table->file->index_init(0);
if ((res= table->file->index_first(table->record[0])))
{
if (res == HA_ERR_END_OF_FILE)
res= 0;
else
res= SP_INTERNAL_ERROR;
res= (res == HA_ERR_END_OF_FILE) ? 0 : SP_INTERNAL_ERROR;
goto err_case1;
}
if ((res= print_field_values(thd, table, used_fields, type, wild)))
@ -529,67 +536,57 @@ db_show_routine_status(THD *thd, int type, const char *wild)
res= SP_OK;
}
err_case1:
err_case1:
send_eof(thd);
err_case:
err_case:
close_thread_tables(thd);
done:
done:
DBUG_RETURN(res);
}
/*
*
* PROCEDURE
*
*/
/*****************************************************************************
PROCEDURE
******************************************************************************/
sp_head *
sp_find_procedure(THD *thd, LEX_STRING *name)
{
DBUG_ENTER("sp_find_procedure");
sp_head *sp;
DBUG_ENTER("sp_find_procedure");
DBUG_PRINT("enter", ("name: %*s", name->length, name->str));
sp= sp_cache_lookup(&thd->sp_proc_cache, name->str, name->length);
if (! sp)
if (!(sp= sp_cache_lookup(&thd->sp_proc_cache, name->str, name->length)))
{
if (db_find_routine(thd, TYPE_ENUM_PROCEDURE,
name->str, name->length, &sp) == SP_OK)
{
sp_cache_insert(&thd->sp_proc_cache, sp);
}
}
DBUG_RETURN(sp);
}
int
sp_create_procedure(THD *thd, sp_head *sp)
{
DBUG_ENTER("sp_create_procedure");
DBUG_PRINT("enter", ("name: %*s", sp->m_name.length, sp->m_name.str));
int ret;
ret= db_create_routine(thd, TYPE_ENUM_PROCEDURE, sp);
DBUG_RETURN(ret);
DBUG_RETURN(db_create_routine(thd, TYPE_ENUM_PROCEDURE, sp));
}
int
sp_drop_procedure(THD *thd, char *name, uint namelen)
{
DBUG_ENTER("sp_drop_procedure");
DBUG_PRINT("enter", ("name: %*s", namelen, name));
int ret;
sp_cache_remove(&thd->sp_proc_cache, name, namelen);
ret= db_drop_routine(thd, TYPE_ENUM_PROCEDURE, name, namelen);
DBUG_RETURN(ret);
DBUG_RETURN(db_drop_routine(thd, TYPE_ENUM_PROCEDURE, name, namelen));
}
int
sp_update_procedure(THD *thd, char *name, uint namelen,
char *newname, uint newnamelen,
@ -597,30 +594,27 @@ sp_update_procedure(THD *thd, char *name, uint namelen,
{
DBUG_ENTER("sp_update_procedure");
DBUG_PRINT("enter", ("name: %*s", namelen, name));
int ret;
sp_cache_remove(&thd->sp_proc_cache, name, namelen);
ret= db_update_routine(thd, TYPE_ENUM_PROCEDURE, name, namelen,
newname, newnamelen,
chistics);
DBUG_RETURN(ret);
DBUG_RETURN(db_update_routine(thd, TYPE_ENUM_PROCEDURE, name, namelen,
newname, newnamelen, chistics));
}
int
sp_show_create_procedure(THD *thd, LEX_STRING *name)
{
sp_head *sp;
DBUG_ENTER("sp_show_create_procedure");
DBUG_PRINT("enter", ("name: %*s", name->length, name->str));
sp_head *sp;
sp= sp_find_procedure(thd, name);
if (sp)
DBUG_RETURN(sp->show_create_procedure(thd));
if ((sp= sp_find_procedure(thd, name)))
DBUG_RETURN(sp->show_create_procedure(thd));
DBUG_RETURN(SP_KEY_NOT_FOUND);
}
int
sp_show_status_procedure(THD *thd, const char *wild)
{
@ -628,55 +622,51 @@ sp_show_status_procedure(THD *thd, const char *wild)
DBUG_RETURN(db_show_routine_status(thd, TYPE_ENUM_PROCEDURE, wild));
}
/*
*
* FUNCTION
*
*/
/*****************************************************************************
FUNCTION
******************************************************************************/
sp_head *
sp_find_function(THD *thd, LEX_STRING *name)
{
DBUG_ENTER("sp_find_function");
sp_head *sp;
DBUG_ENTER("sp_find_function");
DBUG_PRINT("enter", ("name: %*s", name->length, name->str));
sp= sp_cache_lookup(&thd->sp_func_cache, name->str, name->length);
if (! sp)
if (!(sp= sp_cache_lookup(&thd->sp_func_cache, name->str, name->length)))
{
if (db_find_routine(thd, TYPE_ENUM_FUNCTION,
name->str, name->length, &sp) != SP_OK)
sp= NULL;
else
sp_cache_insert(&thd->sp_func_cache, sp);
}
DBUG_RETURN(sp);
}
int
sp_create_function(THD *thd, sp_head *sp)
{
DBUG_ENTER("sp_create_function");
DBUG_PRINT("enter", ("name: %*s", sp->m_name.length, sp->m_name.str));
int ret;
ret= db_create_routine(thd, TYPE_ENUM_FUNCTION, sp);
DBUG_RETURN(ret);
DBUG_RETURN(db_create_routine(thd, TYPE_ENUM_FUNCTION, sp));
}
int
sp_drop_function(THD *thd, char *name, uint namelen)
{
DBUG_ENTER("sp_drop_function");
DBUG_PRINT("enter", ("name: %*s", namelen, name));
int ret;
sp_cache_remove(&thd->sp_func_cache, name, namelen);
ret= db_drop_routine(thd, TYPE_ENUM_FUNCTION, name, namelen);
DBUG_RETURN(ret);
DBUG_RETURN(db_drop_routine(thd, TYPE_ENUM_FUNCTION, name, namelen));
}
int
sp_update_function(THD *thd, char *name, uint namelen,
char *newname, uint newnamelen,
@ -684,30 +674,26 @@ sp_update_function(THD *thd, char *name, uint namelen,
{
DBUG_ENTER("sp_update_procedure");
DBUG_PRINT("enter", ("name: %*s", namelen, name));
int ret;
sp_cache_remove(&thd->sp_func_cache, name, namelen);
ret= db_update_routine(thd, TYPE_ENUM_FUNCTION, name, namelen,
newname, newnamelen,
chistics);
DBUG_RETURN(ret);
DBUG_RETURN(db_update_routine(thd, TYPE_ENUM_FUNCTION, name, namelen,
newname, newnamelen, chistics));
}
int
sp_show_create_function(THD *thd, LEX_STRING *name)
{
sp_head *sp;
DBUG_ENTER("sp_show_create_function");
DBUG_PRINT("enter", ("name: %*s", name->length, name->str));
sp_head *sp;
sp= sp_find_function(thd, name);
if (sp)
if ((sp= sp_find_function(thd, name)))
DBUG_RETURN(sp->show_create_function(thd));
DBUG_RETURN(SP_KEY_NOT_FOUND);
}
int
sp_show_status_function(THD *thd, const char *wild)
{
@ -715,6 +701,7 @@ sp_show_status_function(THD *thd, const char *wild)
DBUG_RETURN(db_show_routine_status(thd, TYPE_ENUM_FUNCTION, wild));
}
// QQ Temporary until the function call detection in sql_lex has been reworked.
bool
sp_function_exists(THD *thd, LEX_STRING *name)
@ -722,17 +709,16 @@ sp_function_exists(THD *thd, LEX_STRING *name)
TABLE *table;
bool ret= FALSE;
bool opened= FALSE;
DBUG_ENTER("sp_function_exists");
if (sp_cache_lookup(&thd->sp_func_cache, name->str, name->length) ||
db_find_routine_aux(thd, TYPE_ENUM_FUNCTION,
name->str, name->length, TL_READ,
&table, &opened) == SP_OK)
{
ret= TRUE;
}
if (opened)
close_thread_tables(thd, 0, 1);
return ret;
DBUG_RETURN(ret);
}
@ -744,6 +730,7 @@ sp_lex_spfuns_key(const byte *ptr, uint *plen, my_bool first)
return (byte *)lsp->str;
}
void
sp_add_fun_to_lex(LEX *lex, LEX_STRING fun)
{
@ -757,6 +744,7 @@ sp_add_fun_to_lex(LEX *lex, LEX_STRING fun)
}
}
void
sp_merge_funs(LEX *dst, LEX *src)
{
@ -769,6 +757,7 @@ sp_merge_funs(LEX *dst, LEX *src)
}
}
int
sp_cache_functions(THD *thd, LEX *lex)
{
@ -786,8 +775,7 @@ sp_cache_functions(THD *thd, LEX *lex)
LEX *newlex= new st_lex;
thd->lex= newlex;
if (db_find_routine(thd, TYPE_ENUM_FUNCTION, ls->str, ls->length, &sp)
== SP_OK)
if (db_find_routine(thd, TYPE_ENUM_FUNCTION, ls->str, ls->length, &sp) == SP_OK)
{
ret= sp_cache_functions(thd, newlex);
delete newlex;
@ -809,6 +797,7 @@ sp_cache_functions(THD *thd, LEX *lex)
return ret;
}
static char *
create_string(THD *thd, ulong *lenp,
int type,
@ -821,23 +810,17 @@ create_string(THD *thd, ulong *lenp,
char *buf, *ptr;
ulong buflen;
buflen= 100 + namelen + paramslen + returnslen + bodylen +
chistics->comment.length;
ptr= buf= thd->alloc(buflen);
buflen= 100 + namelen + paramslen + returnslen + bodylen + chistics->comment.length;
if (!(buf= thd->alloc(buflen)))
return 0;
ptr= strxmov(buf, "CREATE ", (type == TYPE_ENUM_FUNCTION) ? "FUNCTION" : "PROCEDURE",
" `", name, "`(", params, ")", NullS);
if (type == TYPE_ENUM_FUNCTION)
{
ptr+= my_sprintf(buf,
(buf, (char *)
"CREATE FUNCTION %s(%s) RETURNS %s\n",
name, params, returns));
}
else
{
ptr+= my_sprintf(buf,
(buf, (char *)
"CREATE PROCEDURE %s(%s)\n",
name, params));
}
ptr= strxmov(ptr, " RETURNS ", returns, NullS);
*ptr++= '\n';
if (chistics->detistic)
ptr= strmov(ptr, " DETERMINISTIC\n");
if (chistics->suid == IS_NOT_SUID)

110
sql/sql_parse.cc
View File

@ -3084,23 +3084,23 @@ mysql_execute_command(THD *thd)
break;
}
case SQLCOM_CREATE_FUNCTION: // UDF function
{
if (check_access(thd,INSERT_ACL,"mysql",0,1,0))
break;
{
sp_head *sph;
if (check_access(thd,INSERT_ACL,"mysql",0,1,0))
break;
#ifdef HAVE_DLOPEN
sp_head *sph= sp_find_function(thd, &lex->udf.name);
if (sph)
{
net_printf(thd, ER_UDF_EXISTS, lex->udf.name.str);
goto error;
}
if (!(res = mysql_create_function(thd,&lex->udf)))
send_ok(thd);
if (!(sph= sp_find_function(thd, &lex->udf.name)))
{
net_printf(thd, ER_UDF_EXISTS, lex->udf.name.str);
goto error;
}
if (!(res = mysql_create_function(thd,&lex->udf)))
send_ok(thd);
#else
res= -1;
res= -1;
#endif
break;
}
}
#ifndef NO_EMBEDDED_ACCESS_CHECKS
case SQLCOM_DROP_USER:
{
@ -3374,62 +3374,62 @@ mysql_execute_command(THD *thd)
break;
case SQLCOM_CREATE_PROCEDURE:
case SQLCOM_CREATE_SPFUNCTION:
{
if (!lex->sphead)
{
res= -1; // Shouldn't happen
break;
}
else
{
uint namelen;
char *name= lex->sphead->name(&namelen);
uint namelen;
char *name= lex->sphead->name(&namelen);
#ifdef HAVE_DLOPEN
if (lex->sphead->m_type == TYPE_ENUM_FUNCTION)
{
udf_func *udf = find_udf(name, namelen);
if (lex->sphead->m_type == TYPE_ENUM_FUNCTION)
{
udf_func *udf = find_udf(name, namelen);
if (udf)
{
net_printf(thd, ER_UDF_EXISTS, name);
goto error;
}
}
#endif
if (lex->sphead->m_type == TYPE_ENUM_FUNCTION &&
!lex->sphead->m_has_return)
if (udf)
{
net_printf(thd, ER_SP_NORETURN, name);
net_printf(thd, ER_UDF_EXISTS, name);
delete lex->sphead;
lex->sphead=0;
goto error;
}
res= lex->sphead->create(thd);
switch (res)
{
case SP_OK:
send_ok(thd);
delete lex->sphead;
lex->sphead= 0;
break;
case SP_WRITE_ROW_FAILED:
net_printf(thd, ER_SP_ALREADY_EXISTS, SP_TYPE_STRING(lex), name);
delete lex->sphead;
lex->sphead= 0;
goto error;
default:
net_printf(thd, ER_SP_STORE_FAILED, SP_TYPE_STRING(lex), name);
delete lex->sphead;
lex->sphead= 0;
goto error;
}
break;
}
#endif
if (lex->sphead->m_type == TYPE_ENUM_FUNCTION &&
!lex->sphead->m_has_return)
{
net_printf(thd, ER_SP_NORETURN, name);
delete lex->sphead;
lex->sphead=0;
goto error;
}
res= lex->sphead->create(thd);
switch (res) {
case SP_OK:
send_ok(thd);
delete lex->sphead;
lex->sphead= 0;
break;
case SP_WRITE_ROW_FAILED:
net_printf(thd, ER_SP_ALREADY_EXISTS, SP_TYPE_STRING(lex), name);
delete lex->sphead;
lex->sphead= 0;
goto error;
default:
net_printf(thd, ER_SP_STORE_FAILED, SP_TYPE_STRING(lex), name);
delete lex->sphead;
lex->sphead= 0;
goto error;
}
break;
}
case SQLCOM_CALL:
{
sp_head *sp;
sp= sp_find_procedure(thd, &lex->udf.name);
if (! sp)
if (!(sp= sp_find_procedure(thd, &lex->udf.name)))
{
net_printf(thd, ER_SP_DOES_NOT_EXIST, "PROCEDURE", lex->udf.name);
goto error;
@ -3611,6 +3611,7 @@ mysql_execute_command(THD *thd)
res= 0;
goto error;
}
res= 0;
break;
}
case SQLCOM_SHOW_STATUS_PROC:
@ -4157,6 +4158,7 @@ mysql_parse(THD *thd, char *inBuf, uint length)
query_cache_abort(&thd->net);
if (thd->lex->sphead)
{
/* Clean up after failed stored procedure/function */
if (lex != thd->lex)
thd->lex->sphead->restore_lex(thd);
delete thd->lex->sphead;