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
267
268
269
270
271
272
273
274
275
276
277
|
from django.core.exceptions import ValidationError
from django.db import models
from ipaddress import ip_interface, ip_network
from netaddr import EUI
from netaddr.core import AddrFormatError
from netfields.compat import DatabaseWrapper, is_psycopg3
from netfields.forms import (
InetAddressFormField,
NoPrefixInetAddressFormField,
CidrAddressFormField,
MACAddressFormField,
MACAddress8FormField
)
from netfields.mac import mac_unix_common, mac_eui64
if is_psycopg3:
from netfields.psycopg3_types import Inet, Macaddr, Macaddr8
else:
from netfields.psycopg2_types import Inet, Macaddr, Macaddr8
NET_OPERATORS = DatabaseWrapper.operators.copy()
for operator in ['contains', 'startswith', 'endswith']:
NET_OPERATORS[operator] = 'ILIKE %s'
NET_OPERATORS['i%s' % operator] = 'ILIKE %s'
NET_OPERATORS['iexact'] = NET_OPERATORS['exact']
NET_OPERATORS['regex'] = NET_OPERATORS['iregex']
NET_OPERATORS['net_contained'] = '<< %s'
NET_OPERATORS['net_contained_or_equal'] = '<<= %s'
NET_OPERATORS['net_contains'] = '>> %s'
NET_OPERATORS['net_contains_or_equals'] = '>>= %s'
NET_OPERATORS['net_overlaps'] = '&& %s'
NET_OPERATORS['max_prefixlen'] = '%s'
NET_OPERATORS['min_prefixlen'] = '%s'
NET_TEXT_OPERATORS = ['ILIKE %s', '~* %s']
class _NetAddressField(models.Field):
empty_strings_allowed = False
def __init__(self, *args, **kwargs):
kwargs['max_length'] = self.max_length
super(_NetAddressField, self).__init__(*args, **kwargs)
def from_db_value(self, value, expression, connection, *args):
if isinstance(value, list):
# Aggregation detected, return a list of values. This is no longer
# necessary in Django 2.1
return [self.to_python(v) for v in value]
return self.to_python(value)
def to_python(self, value):
if not value:
return value
if isinstance(value, bytes):
value = value.decode('ascii')
try:
return self.python_type()(value)
except ValueError as e:
raise ValidationError(e)
def get_prep_lookup(self, lookup_type, value):
if hasattr(value, '_prepare'):
try:
# Django 1.8
return value._prepare()
except TypeError:
# Django 1.9
return value._prepare(self)
if (lookup_type in NET_OPERATORS and
NET_OPERATORS[lookup_type] not in NET_TEXT_OPERATORS):
if (lookup_type.startswith('net_') or
lookup_type.endswith('prefixlen')) and value is not None:
return str(value)
return self.get_prep_value(value)
return super(_NetAddressField, self).get_prep_lookup(
lookup_type, value)
def get_prep_value(self, value):
if not value:
return None
return str(self.to_python(value))
def get_db_prep_value(self, value, connection, prepared=False):
if value is None:
return None
if self.model._meta.get_field(self.name).get_internal_type() == 'ArrayField':
is_array_field = True
else:
is_array_field = False
if prepared is False and is_array_field is False:
return self.get_prep_value(value)
return Inet(self.get_prep_value(value))
def get_db_prep_lookup(self, lookup_type, value, connection,
prepared=False):
if not value:
return []
if (lookup_type in NET_OPERATORS and
NET_OPERATORS[lookup_type] not in NET_TEXT_OPERATORS):
if prepared:
return [value]
if (lookup_type.startswith('net_') or
lookup_type.endswith('prefixlen')) and value is not None:
return str(value)
return [self.get_prep_value(value)]
return super(_NetAddressField, self).get_db_prep_lookup(
lookup_type, value, connection=connection, prepared=prepared)
def get_placeholder(self, value, compiler, connection):
return "%s::{}".format(self.db_type(connection))
def formfield(self, **kwargs):
defaults = {'form_class': self.form_class()}
defaults.update(kwargs)
return super(_NetAddressField, self).formfield(**defaults)
def deconstruct(self):
name, path, args, kwargs = super(_NetAddressField, self).deconstruct()
if self.max_length is not None:
kwargs['max_length'] = self.max_length
return name, path, args, kwargs
class InetAddressField(_NetAddressField):
description = "PostgreSQL INET field"
max_length = 39
def __init__(self, *args, **kwargs):
self.store_prefix_length = kwargs.pop('store_prefix_length', True)
super(InetAddressField, self).__init__(*args, **kwargs)
def db_type(self, connection):
return 'inet'
def python_type(self):
return ip_interface
def to_python(self, value):
value = super(InetAddressField, self).to_python(value)
if value:
if self.store_prefix_length:
return value
else:
return value.ip
return value
def form_class(self):
if self.store_prefix_length:
return InetAddressFormField
return NoPrefixInetAddressFormField
class CidrAddressField(_NetAddressField):
description = "PostgreSQL CIDR field"
max_length = 43
python_type = ip_network
def db_type(self, connection):
return 'cidr'
def python_type(self):
return ip_network
def form_class(self):
return CidrAddressFormField
class MACAddressField(models.Field):
description = "PostgreSQL MACADDR field"
max_length = 17
def db_type(self, connection):
return 'macaddr'
def from_db_value(self, value, expression, connection, *args):
return self.to_python(value)
def to_python(self, value):
if not value:
return value
try:
return EUI(value, version=48, dialect=mac_unix_common)
except (AddrFormatError, IndexError, TypeError) as e:
raise ValidationError(e)
def get_prep_value(self, value):
if not value:
return None
return str(self.to_python(value))
def get_db_prep_value(self, value, connection, prepared=False):
if value is None:
return None
if self.model._meta.get_field(self.name).get_internal_type() == 'ArrayField':
is_array_field = True
else:
is_array_field = False
if prepared is False and is_array_field is False:
return self.get_prep_value(value)
return Macaddr(self.get_prep_value(value))
def formfield(self, **kwargs):
defaults = {'form_class': MACAddressFormField}
defaults.update(kwargs)
return super(MACAddressField, self).formfield(**defaults)
class MACAddress8Field(models.Field):
"""A MAC Address field with 8 bytes"""
description = "PostgreSQL MACADDR8 field"
max_length = 23
def db_type(self, connection):
return "macaddr8"
def from_db_value(self, value, expression, connection, *args):
return self.to_python(value)
def to_python(self, value):
if not value:
return value
try:
mac = EUI(value, dialect=mac_eui64)
if mac.version == 64:
return mac
mac = mac.eui64()
mac.dialect = mac_eui64
return mac
except (AddrFormatError, IndexError, TypeError) as e:
raise ValidationError(e)
def get_prep_value(self, value):
if not value:
return None
return str(self.to_python(value))
def get_db_prep_value(self, value, connection, prepared=False):
if value is None:
return None
if self.model._meta.get_field(self.name).get_internal_type() == 'ArrayField':
is_array_field = True
else:
is_array_field = False
if prepared is False and is_array_field is False:
return self.get_prep_value(value)
return Macaddr8(self.get_prep_value(value))
def formfield(self, **kwargs):
defaults = {'form_class': MACAddress8FormField}
defaults.update(kwargs)
return super(MACAddress8Field, self).formfield(**defaults)
|
