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item_inetfunc.h
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#ifndef ITEM_INETFUNC_INCLUDED #define ITEM_INETFUNC_INCLUDED /* Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved. Copyright (c) 2014 MariaDB Foundation This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #include "item.h" /************************************************************************* Item_func_inet_aton implements INET_ATON() SQL-function. *************************************************************************/ class Item_func_inet_aton : public Item_int_func { public: Item_func_inet_aton(THD *thd, Item *a): Item_int_func(thd, a) {} longlong val_int(); const char *func_name() const { return "inet_aton"; } void fix_length_and_dec() { decimals= 0; max_length= 21; maybe_null= 1; unsigned_flag= 1; } }; /************************************************************************* Item_func_inet_ntoa implements INET_NTOA() SQL-function. *************************************************************************/ class Item_func_inet_ntoa : public Item_str_func { public: Item_func_inet_ntoa(THD *thd, Item *a): Item_str_func(thd, a) { } String* val_str(String* str); const char *func_name() const { return "inet_ntoa"; } void fix_length_and_dec() { decimals= 0; fix_length_and_charset(3 * 8 + 7, default_charset()); maybe_null= 1; } }; /************************************************************************* Item_func_inet_bool_base implements common code for INET6/IP-related functions returning boolean value. *************************************************************************/ class Item_func_inet_bool_base : public Item_bool_func { public: inline Item_func_inet_bool_base(THD *thd, Item *ip_addr): Item_bool_func(thd, ip_addr) { null_value= false; } public: virtual longlong val_int(); protected: virtual bool calc_value(const String *arg) = 0; }; /************************************************************************* Item_func_inet_str_base implements common code for INET6/IP-related functions returning string value. *************************************************************************/ class Item_func_inet_str_base : public Item_str_ascii_func { public: inline Item_func_inet_str_base(THD *thd, Item *arg): Item_str_ascii_func(thd, arg) { } public: virtual String *val_str_ascii(String *buffer); protected: virtual bool calc_value(String *arg, String *buffer) = 0; }; /************************************************************************* Item_func_inet6_aton implements INET6_ATON() SQL-function. *************************************************************************/ class Item_func_inet6_aton : public Item_func_inet_str_base { public: inline Item_func_inet6_aton(THD *thd, Item *ip_addr): Item_func_inet_str_base(thd, ip_addr) { } public: virtual const char *func_name() const { return "inet6_aton"; } virtual void fix_length_and_dec() { decimals= 0; fix_length_and_charset(16, &my_charset_bin); maybe_null= 1; } protected: virtual bool calc_value(String *arg, String *buffer); }; /************************************************************************* Item_func_inet6_ntoa implements INET6_NTOA() SQL-function. *************************************************************************/ class Item_func_inet6_ntoa : public Item_func_inet_str_base { public: inline Item_func_inet6_ntoa(THD *thd, Item *ip_addr): Item_func_inet_str_base(thd, ip_addr) { } public: virtual const char *func_name() const { return "inet6_ntoa"; } virtual void fix_length_and_dec() { decimals= 0; // max length: IPv6-address -- 16 bytes // 16 bytes / 2 bytes per group == 8 groups => 7 delimiter // 4 symbols per group fix_length_and_charset(8 * 4 + 7, default_charset()); maybe_null= 1; } protected: virtual bool calc_value(String *arg, String *buffer); }; /************************************************************************* Item_func_is_ipv4 implements IS_IPV4() SQL-function. *************************************************************************/ class Item_func_is_ipv4 : public Item_func_inet_bool_base { public: inline Item_func_is_ipv4(THD *thd, Item *ip_addr): Item_func_inet_bool_base(thd, ip_addr) { } public: virtual const char *func_name() const { return "is_ipv4"; } protected: virtual bool calc_value(const String *arg); }; /************************************************************************* Item_func_is_ipv6 implements IS_IPV6() SQL-function. *************************************************************************/ class Item_func_is_ipv6 : public Item_func_inet_bool_base { public: inline Item_func_is_ipv6(THD *thd, Item *ip_addr): Item_func_inet_bool_base(thd, ip_addr) { } public: virtual const char *func_name() const { return "is_ipv6"; } protected: virtual bool calc_value(const String *arg); }; /************************************************************************* Item_func_is_ipv4_compat implements IS_IPV4_COMPAT() SQL-function. *************************************************************************/ class Item_func_is_ipv4_compat : public Item_func_inet_bool_base { public: inline Item_func_is_ipv4_compat(THD *thd, Item *ip_addr): Item_func_inet_bool_base(thd, ip_addr) { } public: virtual const char *func_name() const { return "is_ipv4_compat"; } protected: virtual bool calc_value(const String *arg); }; /************************************************************************* Item_func_is_ipv4_mapped implements IS_IPV4_MAPPED() SQL-function. *************************************************************************/ class Item_func_is_ipv4_mapped : public Item_func_inet_bool_base { public: inline Item_func_is_ipv4_mapped(THD *thd, Item *ip_addr): Item_func_inet_bool_base(thd, ip_addr) { } public: virtual const char *func_name() const { return "is_ipv4_mapped"; } protected: virtual bool calc_value(const String *arg); }; #endif // ITEM_INETFUNC_INCLUDED