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
|
import re
from django.core.exceptions import ValidationError
from django.utils.translation import ugettext_lazy as _
from django.utils.encoding import smart_unicode
# These values, if given to validate(), will trigger the self.required check.
EMPTY_VALUES = (None, '', [], (), {})
try:
from django.conf import settings
URL_VALIDATOR_USER_AGENT = settings.URL_VALIDATOR_USER_AGENT
except ImportError:
# It's OK if Django settings aren't configured.
URL_VALIDATOR_USER_AGENT = 'Django (http://www.djangoproject.com/)'
class RegexValidator(object):
regex = ''
message = _(u'Enter a valid value.')
code = 'invalid'
def __init__(self, regex=None, message=None, code=None):
if regex is not None:
self.regex = regex
if message is not None:
self.message = message
if code is not None:
self.code = code
if isinstance(self.regex, basestring):
self.regex = re.compile(regex)
def __call__(self, value):
"""
Validates that the input matches the regular expression.
"""
if not self.regex.search(smart_unicode(value)):
raise ValidationError(self.message, code=self.code)
class URLValidator(RegexValidator):
regex = re.compile(
r'^https?://' # http:// or https://
r'(?:(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+[A-Z]{2,6}\.?|' #domain...
r'localhost|' #localhost...
r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})' # ...or ip
r'(?::\d+)?' # optional port
r'(?:/?|[/?]\S+)$', re.IGNORECASE)
def __init__(self, verify_exists=False, validator_user_agent=URL_VALIDATOR_USER_AGENT):
super(URLValidator, self).__init__()
self.verify_exists = verify_exists
self.user_agent = validator_user_agent
def __call__(self, value):
super(URLValidator, self).__call__(value)
if self.verify_exists:
import urllib2
headers = {
"Accept": "text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5",
"Accept-Language": "en-us,en;q=0.5",
"Accept-Charset": "ISO-8859-1,utf-8;q=0.7,*;q=0.7",
"Connection": "close",
"User-Agent": self.user_agent,
}
try:
req = urllib2.Request(value, None, headers)
u = urllib2.urlopen(req)
except ValueError:
raise ValidationError(_(u'Enter a valid URL.'), code='invalid')
except: # urllib2.URLError, httplib.InvalidURL, etc.
raise ValidationError(_(u'This URL appears to be a broken link.'), code='invalid_link')
def validate_integer(value):
try:
int(value)
except (ValueError, TypeError), e:
raise ValidationError('')
email_re = re.compile(
r"(^[-!#$%&'*+/=?^_`{}|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`{}|~0-9A-Z]+)*" # dot-atom
r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|\\[\001-011\013\014\016-\177])*"' # quoted-string
r')@(?:[A-Z0-9](?:[A-Z0-9-]{0,61}[A-Z0-9])?\.)+[A-Z]{2,6}\.?$', re.IGNORECASE) # domain
validate_email = RegexValidator(email_re, _(u'Enter a valid e-mail address.'), 'invalid')
slug_re = re.compile(r'^[-\w]+$')
validate_slug = RegexValidator(slug_re, _(u"Enter a valid 'slug' consisting of letters, numbers, underscores or hyphens."), 'invalid')
ipv4_re = re.compile(r'^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$')
validate_ipv4_address = RegexValidator(ipv4_re, _(u'Enter a valid IPv4 address.'), 'invalid')
comma_separated_int_list_re = re.compile('^[\d,]+$')
validate_comma_separated_integer_list = RegexValidator(comma_separated_int_list_re, _(u'Enter only digits separated by commas.'), 'invalid')
class BaseValidator(object):
compare = lambda self, a, b: a is not b
clean = lambda self, x: x
message = _(u'Ensure this value is %(limit_value)s (it is %(show_value)s).')
code = 'limit_value'
def __init__(self, limit_value):
self.limit_value = limit_value
def __call__(self, value):
cleaned = self.clean(value)
params = {'limit_value': self.limit_value, 'show_value': cleaned}
if self.compare(cleaned, self.limit_value):
raise ValidationError(
self.message % params,
code=self.code,
params=params,
)
class MaxValueValidator(BaseValidator):
compare = lambda self, a, b: a > b
message = _(u'Ensure this value is less than or equal to %(limit_value)s.')
code = 'max_value'
class MinValueValidator(BaseValidator):
compare = lambda self, a, b: a < b
message = _(u'Ensure this value is greater than or equal to %(limit_value)s.')
code = 'min_value'
class MinLengthValidator(BaseValidator):
compare = lambda self, a, b: a < b
clean = lambda self, x: len(x)
message = _(u'Ensure this value has at least %(limit_value)d characters (it has %(show_value)d).')
code = 'min_length'
class MaxLengthValidator(BaseValidator):
compare = lambda self, a, b: a > b
clean = lambda self, x: len(x)
message = _(u'Ensure this value has at most %(limit_value)d characters (it has %(show_value)d).')
code = 'max_length'
|
