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#ifndef SQL_TYPE_INET_H
#define SQL_TYPE_INET_H
/* Copyright (c) 2011,2013, Oracle and/or its affiliates.
Copyright (c) 2014 MariaDB Foundation
Copyright (c) 2019,2021 MariaDB Corporation
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 02110-1335 USA */
static const size_t IN_ADDR_SIZE= 4;
static const size_t IN_ADDR_MAX_CHAR_LENGTH= 15;
static const size_t IN6_ADDR_SIZE= 16;
static const size_t IN6_ADDR_NUM_WORDS= IN6_ADDR_SIZE / 2;
/**
Non-abbreviated syntax is 8 groups, up to 4 digits each,
plus 7 delimiters between the groups.
Abbreviated syntax is even shorter.
*/
static const uint IN6_ADDR_MAX_CHAR_LENGTH= 8 * 4 + 7;
#include "sql_type_fixedbin.h"
typedef FixedBinTypeBundle<IN6_ADDR_SIZE, IN6_ADDR_MAX_CHAR_LENGTH> Inet6Bundle;
/***********************************************************************/
class Inet4
{
char m_buffer[IN_ADDR_SIZE];
protected:
bool ascii_to_ipv4(const char *str, size_t length);
bool character_string_to_ipv4(const char *str, size_t str_length,
CHARSET_INFO *cs)
{
if (cs->state & MY_CS_NONASCII)
{
char tmp[IN_ADDR_MAX_CHAR_LENGTH];
String_copier copier;
uint length= copier.well_formed_copy(&my_charset_latin1, tmp, sizeof(tmp),
cs, str, str_length);
return ascii_to_ipv4(tmp, length);
}
return ascii_to_ipv4(str, str_length);
}
bool binary_to_ipv4(const char *str, size_t length)
{
if (length != sizeof(m_buffer))
return true;
memcpy(m_buffer, str, length);
return false;
}
// Non-initializing constructor
Inet4() { }
public:
void to_binary(char *dst, size_t dstsize) const
{
DBUG_ASSERT(dstsize >= sizeof(m_buffer));
memcpy(dst, m_buffer, sizeof(m_buffer));
}
bool to_binary(String *to) const
{
return to->copy(m_buffer, sizeof(m_buffer), &my_charset_bin);
}
size_t to_string(char *dst, size_t dstsize) const;
bool to_string(String *to) const
{
to->set_charset(&my_charset_latin1);
if (to->alloc(INET_ADDRSTRLEN))
return true;
to->length((uint32) to_string((char*) to->ptr(), INET_ADDRSTRLEN));
return false;
}
};
class Inet4_null: public Inet4, public Null_flag
{
public:
// Initialize from a text representation
Inet4_null(const char *str, size_t length, CHARSET_INFO *cs)
:Null_flag(character_string_to_ipv4(str, length, cs))
{ }
Inet4_null(const String &str)
:Inet4_null(str.ptr(), str.length(), str.charset())
{ }
// Initialize from a binary representation
Inet4_null(const char *str, size_t length)
:Null_flag(binary_to_ipv4(str, length))
{ }
Inet4_null(const Binary_string &str)
:Inet4_null(str.ptr(), str.length())
{ }
public:
const Inet4& to_inet4() const
{
DBUG_ASSERT(!is_null());
return *this;
}
void to_binary(char *dst, size_t dstsize) const
{
to_inet4().to_binary(dst, dstsize);
}
bool to_binary(String *to) const
{
return to_inet4().to_binary(to);
}
size_t to_string(char *dst, size_t dstsize) const
{
return to_inet4().to_string(dst, dstsize);
}
bool to_string(String *to) const
{
return to_inet4().to_string(to);
}
};
#endif /* SQL_TYPE_INET_H */
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