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227 lines
7.3 KiB
227 lines
7.3 KiB
#ifndef ITEM_INETFUNC_INCLUDED
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#define ITEM_INETFUNC_INCLUDED
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/* Copyright (c) 2011, 2017, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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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, version 2.0, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include "m_ctype.h"
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#include "my_inttypes.h"
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#include "sql/item_cmpfunc.h" // Item_bool_func
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#include "sql/item_func.h"
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#include "sql/item_strfunc.h" // Item_str_func
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#include "sql/parse_tree_node_base.h"
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class Item;
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class String;
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class THD;
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/*************************************************************************
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Item_func_inet_aton implements INET_ATON() SQL-function.
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*************************************************************************/
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class Item_func_inet_aton : public Item_int_func {
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public:
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inline Item_func_inet_aton(const POS &pos, Item *arg)
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: Item_int_func(pos, arg) {}
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public:
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longlong val_int() override;
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const char *func_name() const override { return "inet_aton"; }
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bool resolve_type(THD *) override {
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maybe_null = true;
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unsigned_flag = true;
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return false;
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}
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};
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/*************************************************************************
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Item_func_inet_ntoa implements INET_NTOA() SQL-function.
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*************************************************************************/
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class Item_func_inet_ntoa : public Item_str_func {
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public:
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inline Item_func_inet_ntoa(const POS &pos, Item *arg)
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: Item_str_func(pos, arg) {}
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public:
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String *val_str(String *str) override;
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const char *func_name() const override { return "inet_ntoa"; }
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bool resolve_type(THD *) override {
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set_data_type_string(3 * 8 + 7, default_charset());
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maybe_null = true;
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return false;
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}
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};
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/*************************************************************************
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Item_func_inet_bool_base implements common code for INET6/IP-related
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functions returning boolean value.
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*************************************************************************/
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class Item_func_inet_bool_base : public Item_bool_func {
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public:
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Item_func_inet_bool_base(const POS &pos, Item *ip_addr)
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: Item_bool_func(pos, ip_addr) {
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null_value = false;
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}
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public:
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longlong val_int() override;
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protected:
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virtual bool calc_value(const String *arg) const = 0;
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};
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/*************************************************************************
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Item_func_inet_str_base implements common code for INET6/IP-related
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functions returning string value.
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*************************************************************************/
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class Item_func_inet_str_base : public Item_str_ascii_func {
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public:
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Item_func_inet_str_base(const POS &pos, Item *arg)
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: Item_str_ascii_func(pos, arg) {}
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public:
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String *val_str_ascii(String *buffer) override;
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protected:
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virtual bool calc_value(String *arg, String *buffer) = 0;
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};
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/*************************************************************************
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Item_func_inet6_aton implements INET6_ATON() SQL-function.
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*************************************************************************/
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class Item_func_inet6_aton : public Item_func_inet_str_base {
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public:
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Item_func_inet6_aton(const POS &pos, Item *ip_addr)
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: Item_func_inet_str_base(pos, ip_addr) {}
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public:
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const char *func_name() const override { return "inet6_aton"; }
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bool resolve_type(THD *) override {
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set_data_type_string(16, &my_charset_bin);
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maybe_null = true;
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return false;
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}
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protected:
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bool calc_value(String *arg, String *buffer) override;
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};
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/*************************************************************************
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Item_func_inet6_ntoa implements INET6_NTOA() SQL-function.
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*************************************************************************/
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class Item_func_inet6_ntoa : public Item_func_inet_str_base {
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public:
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Item_func_inet6_ntoa(const POS &pos, Item *ip_addr)
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: Item_func_inet_str_base(pos, ip_addr) {}
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public:
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const char *func_name() const override { return "inet6_ntoa"; }
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bool resolve_type(THD *) override {
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// max length: IPv6-address -- 16 bytes
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// 16 bytes / 2 bytes per group == 8 groups => 7 delimiter
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// 4 symbols per group
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set_data_type_string(8 * 4 + 7, default_charset());
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maybe_null = true;
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return false;
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}
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protected:
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bool calc_value(String *arg, String *buffer) override;
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};
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/*************************************************************************
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Item_func_is_ipv4 implements IS_IPV4() SQL-function.
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*************************************************************************/
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class Item_func_is_ipv4 : public Item_func_inet_bool_base {
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public:
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Item_func_is_ipv4(const POS &pos, Item *ip_addr)
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: Item_func_inet_bool_base(pos, ip_addr) {}
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public:
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const char *func_name() const override { return "is_ipv4"; }
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protected:
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bool calc_value(const String *arg) const override;
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};
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/*************************************************************************
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Item_func_is_ipv6 implements IS_IPV6() SQL-function.
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*************************************************************************/
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class Item_func_is_ipv6 : public Item_func_inet_bool_base {
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public:
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Item_func_is_ipv6(const POS &pos, Item *ip_addr)
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: Item_func_inet_bool_base(pos, ip_addr) {}
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public:
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const char *func_name() const override { return "is_ipv6"; }
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protected:
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bool calc_value(const String *arg) const override;
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};
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/*************************************************************************
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Item_func_is_ipv4_compat implements IS_IPV4_COMPAT() SQL-function.
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*************************************************************************/
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class Item_func_is_ipv4_compat : public Item_func_inet_bool_base {
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public:
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Item_func_is_ipv4_compat(const POS &pos, Item *ip_addr)
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: Item_func_inet_bool_base(pos, ip_addr) {}
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public:
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const char *func_name() const override { return "is_ipv4_compat"; }
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protected:
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bool calc_value(const String *arg) const override;
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};
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/*************************************************************************
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Item_func_is_ipv4_mapped implements IS_IPV4_MAPPED() SQL-function.
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*************************************************************************/
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class Item_func_is_ipv4_mapped : public Item_func_inet_bool_base {
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public:
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Item_func_is_ipv4_mapped(const POS &pos, Item *ip_addr)
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: Item_func_inet_bool_base(pos, ip_addr) {}
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public:
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const char *func_name() const override { return "is_ipv4_mapped"; }
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protected:
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bool calc_value(const String *arg) const override;
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};
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#endif // ITEM_INETFUNC_INCLUDED
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