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48e7d1e29b
The code was reading a HASH or DYNAMIC_ARRAY which may be uninited (difference from 5.0 is that those vars were always zeroed in 5.0 because were static globals, while they are new'd in 5.1). sql/rpl_filter.cc: the hash or dynamic_array may not be inited, depends on a bool (e.g. if wild_do_table_inited==0 wild_do_table is uninitialized memory); the code was not taking the bool into account and so reading uninited memory. sql/rpl_filter.h: comments and prototype change (see rpl_filter.cc)
119 lines
3.2 KiB
C++
119 lines
3.2 KiB
C++
/* Copyright (C) 2000-2003 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#ifndef RPL_FILTER_H
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#define RPL_FILTER_H
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#include "mysql.h"
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#include "my_list.h"
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typedef struct st_table_rule_ent
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{
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char* db;
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char* tbl_name;
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uint key_len;
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} TABLE_RULE_ENT;
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/*
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Rpl_filter
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Inclusion and exclusion rules of tables and databases.
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Also handles rewrites of db.
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Used for replication and binlogging.
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*/
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class Rpl_filter
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{
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public:
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Rpl_filter();
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~Rpl_filter();
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Rpl_filter(Rpl_filter const&);
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Rpl_filter& operator=(Rpl_filter const&);
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/* Checks - returns true if ok to replicate/log */
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bool tables_ok(const char* db, TABLE_LIST* tables);
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bool db_ok(const char* db);
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bool db_ok_with_wild_table(const char *db);
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bool is_on();
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/* Setters - add filtering rules */
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int add_do_table(const char* table_spec);
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int add_ignore_table(const char* table_spec);
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int add_wild_do_table(const char* table_spec);
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int add_wild_ignore_table(const char* table_spec);
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void add_do_db(const char* db_spec);
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void add_ignore_db(const char* db_spec);
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void add_db_rewrite(const char* from_db, const char* to_db);
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/* Getters - to get information about current rules */
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void get_do_table(String* str);
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void get_ignore_table(String* str);
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void get_wild_do_table(String* str);
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void get_wild_ignore_table(String* str);
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const char* get_rewrite_db(const char* db, uint32 *new_len);
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I_List<i_string>* get_do_db();
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I_List<i_string>* get_ignore_db();
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private:
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bool table_rules_on;
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void init_table_rule_hash(HASH* h, bool* h_inited);
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void init_table_rule_array(DYNAMIC_ARRAY* a, bool* a_inited);
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int add_table_rule(HASH* h, const char* table_spec);
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int add_wild_table_rule(DYNAMIC_ARRAY* a, const char* table_spec);
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void free_string_array(DYNAMIC_ARRAY *a);
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void table_rule_ent_hash_to_str(String* s, HASH* h, bool inited);
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void table_rule_ent_dynamic_array_to_str(String* s, DYNAMIC_ARRAY* a,
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bool inited);
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TABLE_RULE_ENT* find_wild(DYNAMIC_ARRAY *a, const char* key, int len);
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/*
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Those 4 structures below are uninitialized memory unless the
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corresponding *_inited variables are "true".
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*/
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HASH do_table;
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HASH ignore_table;
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DYNAMIC_ARRAY wild_do_table;
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DYNAMIC_ARRAY wild_ignore_table;
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bool do_table_inited;
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bool ignore_table_inited;
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bool wild_do_table_inited;
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bool wild_ignore_table_inited;
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I_List<i_string> do_db;
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I_List<i_string> ignore_db;
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I_List<i_string_pair> rewrite_db;
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};
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extern Rpl_filter *rpl_filter;
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extern Rpl_filter *binlog_filter;
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#endif // RPL_FILTER_H
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