summaryrefslogtreecommitdiff
path: root/sql/item_inetfunc.h
blob: 024ff8ce4f00ec59089ceb3089429ce7a98badcb (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
#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_longlong_func
{
  bool check_arguments() const
  { return check_argument_types_can_return_text(0, arg_count); }
public:
  Item_func_inet_aton(THD *thd, Item *a): Item_longlong_func(thd, a) {}
  longlong val_int();
  const char *func_name() const { return "inet_aton"; }
  bool fix_length_and_dec()
  {
    decimals= 0;
    max_length= 21;
    maybe_null= 1;
    unsigned_flag= 1;
    return FALSE;
  }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_inet_aton>(thd, this); }
};


/*************************************************************************
  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"; }
  bool fix_length_and_dec()
  {
    decimals= 0;
    fix_length_and_charset(3 * 8 + 7, default_charset());
    maybe_null= 1;
    return FALSE;
  }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_inet_ntoa>(thd, this); }
};


/*************************************************************************
  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();
  bool need_parentheses_in_default() { return false; }

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(const 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 bool fix_length_and_dec()
  {
    decimals= 0;
    fix_length_and_charset(16, &my_charset_bin);
    maybe_null= 1;
    return FALSE;
  }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_inet6_aton>(thd, this); }

protected:
  virtual bool calc_value(const 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 bool 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;
    return FALSE;
  }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_inet6_ntoa>(thd, this); }

protected:
  virtual bool calc_value(const 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"; }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_is_ipv4>(thd, this); }

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"; }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_is_ipv6>(thd, this); }

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"; }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_is_ipv4_compat>(thd, this); }

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"; }
  Item *get_copy(THD *thd)
  { return get_item_copy<Item_func_is_ipv4_mapped>(thd, this); }

protected:
  virtual bool calc_value(const String *arg);
};

#endif // ITEM_INETFUNC_INCLUDED