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WL#1629: SHOW with WHERE(partially) &

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WL#173:  Create Data Dictionary Tables for SHOW Commands
This commit is contained in:
gluh@gluh.mysql.r18.ru
2004-11-13 13:56:39 +03:00
parent 7df412160a
commit 321f803784
19 changed files with 2932 additions and 700 deletions
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218
sql/sql_acl.cc
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@ -2851,7 +2851,8 @@ bool check_grant(THD *thd, ulong want_access, TABLE_LIST *tables,
for (table= tables; table && number--; table= table->next_global)
{
GRANT_TABLE *grant_table;
if (!(~table->grant.privilege & want_access) || table->derived)
if (!(~table->grant.privilege & want_access) ||
table->derived || table->schema_table)
{
/*
It is subquery in the FROM clause. VIEW set table->derived after
@ -3928,6 +3929,221 @@ int wild_case_compare(CHARSET_INFO *cs, const char *str,const char *wildstr)
DBUG_RETURN (*str != '\0');
}
void update_schema_privilege(TABLE *table, char *buff, const char* db,
const char* t_name, const char* column,
uint col_length, const char *priv,
uint priv_length, const char* is_grantable)
{
int i= 2;
CHARSET_INFO *cs= system_charset_info;
restore_record(table, default_values);
table->field[0]->store(buff, strlen(buff), cs);
if (db)
table->field[i++]->store(db, strlen(db), cs);
if (t_name)
table->field[i++]->store(t_name, strlen(t_name), cs);
if (column)
table->field[i++]->store(column, col_length, cs);
table->field[i++]->store(priv, priv_length, cs);
table->field[i]->store(is_grantable, strlen(is_grantable), cs);
table->file->write_row(table->record[0]);
}
int fill_schema_user_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
{
#ifndef NO_EMBEDDED_ACCESS_CHECKS
uint counter;
ACL_USER *acl_user;
ulong want_access;
char buff[100];
TABLE *table= tables->table;
DBUG_ENTER("fill_schema_user_privileges");
for (counter=0 ; counter < acl_users.elements ; counter++)
{
const char *user,*host, *is_grantable="YES";
acl_user=dynamic_element(&acl_users,counter,ACL_USER*);
if (!(user=acl_user->user))
user= "";
if (!(host=acl_user->host.hostname))
host= "";
want_access= acl_user->access;
if (!(want_access & GRANT_ACL))
is_grantable= "NO";
strxmov(buff,"'",user,"'@'",host,"'",NullS);
if (!(want_access & ~GRANT_ACL))
update_schema_privilege(table, buff, 0, 0, 0, 0, "USAGE", 5, is_grantable);
else
{
uint priv_id;
ulong j,test_access= want_access & ~GRANT_ACL;
for (priv_id=0, j = SELECT_ACL;j <= GLOBAL_ACLS; priv_id++,j <<= 1)
{
if (test_access & j)
update_schema_privilege(table, buff, 0, 0, 0, 0,
command_array[priv_id],
command_lengths[priv_id], is_grantable);
}
}
}
#endif
DBUG_RETURN(0);
}
int fill_schema_schema_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
{
#ifndef NO_EMBEDDED_ACCESS_CHECKS
uint counter;
ACL_DB *acl_db;
ulong want_access;
char buff[100];
TABLE *table= tables->table;
DBUG_ENTER("fill_schema_schema_privileges");
for (counter=0 ; counter < acl_dbs.elements ; counter++)
{
const char *user, *host, *is_grantable="YES";
acl_db=dynamic_element(&acl_dbs,counter,ACL_DB*);
if (!(user=acl_db->user))
user= "";
if (!(host=acl_db->host.hostname))
host= "";
want_access=acl_db->access;
if (want_access)
{
if (!(want_access & GRANT_ACL))
{
is_grantable= "NO";
}
strxmov(buff,"'",user,"'@'",host,"'",NullS);
if (!(want_access & ~GRANT_ACL))
update_schema_privilege(table, buff, acl_db->db, 0, 0,
0, "USAGE", 5, is_grantable);
else
{
int cnt;
ulong j,test_access= want_access & ~GRANT_ACL;
for (cnt=0, j = SELECT_ACL; j <= DB_ACLS; cnt++,j <<= 1)
if (test_access & j)
update_schema_privilege(table, buff, acl_db->db, 0, 0, 0,
command_array[cnt], command_lengths[cnt],
is_grantable);
}
}
}
#endif
DBUG_RETURN(0);
}
int fill_schema_table_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
{
#ifndef NO_EMBEDDED_ACCESS_CHECKS
uint index;
char buff[100];
TABLE *table= tables->table;
DBUG_ENTER("fill_schema_table_privileges");
for (index=0 ; index < column_priv_hash.records ; index++)
{
const char *user, *is_grantable= "YES";
GRANT_TABLE *grant_table= (GRANT_TABLE*) hash_element(&column_priv_hash,
index);
if (!(user=grant_table->user))
user= "";
ulong table_access= grant_table->privs;
if (table_access != 0)
{
ulong test_access= table_access & ~GRANT_ACL;
if (!(table_access & GRANT_ACL))
is_grantable= "NO";
strxmov(buff,"'",user,"'@'",grant_table->orig_host,"'",NullS);
if (!test_access)
update_schema_privilege(table, buff, grant_table->db, grant_table->tname,
0, 0, "USAGE", 5, is_grantable);
else
{
ulong j;
int cnt;
for (cnt= 0, j= SELECT_ACL; j <= TABLE_ACLS; cnt++, j<<= 1)
{
if (test_access & j)
update_schema_privilege(table, buff, grant_table->db,
grant_table->tname, 0, 0, command_array[cnt],
command_lengths[cnt], is_grantable);
}
}
}
}
#endif
DBUG_RETURN(0);
}
int fill_schema_column_privileges(THD *thd, TABLE_LIST *tables, COND *cond)
{
#ifndef NO_EMBEDDED_ACCESS_CHECKS
uint index;
char buff[100];
TABLE *table= tables->table;
DBUG_ENTER("fill_schema_table_privileges");
for (index=0 ; index < column_priv_hash.records ; index++)
{
const char *user, *is_grantable= "YES";
GRANT_TABLE *grant_table= (GRANT_TABLE*) hash_element(&column_priv_hash,
index);
if (!(user=grant_table->user))
user= "";
ulong table_access= grant_table->cols;
if (table_access != 0)
{
ulong test_access= grant_table->cols & ~GRANT_ACL;
if (!(table_access & GRANT_ACL))
is_grantable= "NO";
strxmov(buff,"'",user,"'@'",grant_table->orig_host,"'",NullS);
if (!test_access)
continue;
else
{
ulong j;
int cnt;
for (cnt= 0, j= SELECT_ACL; j <= TABLE_ACLS; cnt++, j<<= 1)
{
if (test_access & j)
{
for (uint col_index=0 ;
col_index < grant_table->hash_columns.records ;
col_index++)
{
GRANT_COLUMN *grant_column = (GRANT_COLUMN*)
hash_element(&grant_table->hash_columns,col_index);
if ((grant_column->rights & j) && (table_access & j))
update_schema_privilege(table, buff, grant_table->db,
grant_table->tname,
grant_column->column,
grant_column->key_length,
command_array[cnt],
command_lengths[cnt], is_grantable);
}
}
}
}
}
}
#endif
DBUG_RETURN(0);
}
#ifndef NO_EMBEDDED_ACCESS_CHECKS
/*
fill effective privileges for table