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__init__.py
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/
__init__.py
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# coding=utf-8
from __future__ import unicode_literals
from text_unidecode import unidecode
from .. import BaseProvider
from ipaddress import ip_address, ip_network, IPV4LENGTH, IPV6LENGTH
# from faker.generator import random
# from faker.providers.lorem.la import Provider as Lorem
from faker.utils.decorators import lowercase, slugify, slugify_unicode
localized = True
class _IPv4Constants:
"""
IPv4 network constants used to group networks into different categories.
Structure derived from `ipaddress._IPv4Constants`.
Excluded network list is updated to comply with current IANA list of
private and reserved networks.
"""
_network_classes = {
'a': ip_network('0.0.0.0/1'),
'b': ip_network('128.0.0.0/2'),
'c': ip_network('192.0.0.0/3'),
}
_linklocal_network = ip_network('169.254.0.0/16')
_loopback_network = ip_network('127.0.0.0/8')
_multicast_network = ip_network('224.0.0.0/4')
# Three common private networks from class A, B and CIDR
# to generate private addresses from.
_private_networks = [
ip_network('10.0.0.0/8'),
ip_network('172.16.0.0/12'),
ip_network('192.168.0.0/16'),
]
# List of networks from which IP addresses will never be generated,
# includes other private IANA and reserved networks from
# ttps://www.iana.org/assignments/iana-ipv4-special-registry/iana-ipv4-special-registry.xhtml
_excluded_networks = [
ip_network('0.0.0.0/8'),
ip_network('100.64.0.0/10'),
ip_network('127.0.0.0/8'),
ip_network('169.254.0.0/16'),
ip_network('192.0.0.0/24'),
ip_network('192.0.2.0/24'),
ip_network('192.31.196.0/24'),
ip_network('192.52.193.0/24'),
ip_network('192.88.99.0/24'),
ip_network('192.175.48.0/24'),
ip_network('198.18.0.0/15'),
ip_network('198.51.100.0/24'),
ip_network('203.0.113.0/24'),
ip_network('240.0.0.0/4'),
ip_network('255.255.255.255/32'),
] + [
_linklocal_network,
_loopback_network,
_multicast_network,
]
class Provider(BaseProvider):
safe_email_tlds = ('org', 'com', 'net')
free_email_domains = ('gmail.com', 'yahoo.com', 'hotmail.com')
tlds = (
'com', 'com', 'com', 'com', 'com', 'com', 'biz', 'info', 'net', 'org',
)
hostname_prefixes = ('db', 'srv', 'desktop', 'laptop', 'lt', 'email', 'web')
uri_pages = (
'index', 'home', 'search', 'main', 'post', 'homepage', 'category',
'register', 'login', 'faq', 'about', 'terms', 'privacy', 'author',
)
uri_paths = (
'app', 'main', 'wp-content', 'search', 'category', 'tag', 'categories',
'tags', 'blog', 'posts', 'list', 'explore',
)
uri_extensions = (
'.html', '.html', '.html', '.htm', '.htm', '.php', '.php', '.jsp',
'.asp',
)
user_name_formats = (
'{{last_name}}.{{first_name}}',
'{{first_name}}.{{last_name}}',
'{{first_name}}##',
'?{{last_name}}',
)
email_formats = (
'{{user_name}}@{{domain_name}}',
'{{user_name}}@{{free_email_domain}}',
)
url_formats = (
'www.{{domain_name}}/',
'{{domain_name}}/',
)
uri_formats = (
'{{url}}',
'{{url}}{{uri_page}}/',
'{{url}}{{uri_page}}{{uri_extension}}',
'{{url}}{{uri_path}}/{{uri_page}}/',
'{{url}}{{uri_path}}/{{uri_page}}{{uri_extension}}',
)
image_placeholder_services = (
'https://www.lorempixel.com/{width}/{height}',
'https://dummyimage.com/{width}x{height}',
'https://placekitten.com/{width}/{height}',
'https://placeimg.com/{width}/{height}/any',
)
replacements = ()
def _to_ascii(self, string):
for search, replace in self.replacements:
string = string.replace(search, replace)
string = unidecode(string)
return string
@lowercase
def email(self, domain=None):
if domain:
email = '{0}@{1}'.format(self.user_name(), domain)
else:
pattern = self.random_element(self.email_formats)
email = "".join(self.generator.parse(pattern).split(" "))
return email
@lowercase
def safe_email(self):
return '{}@example.{}'.format(
self.user_name(), self.random_element(self.safe_email_tlds),
)
@lowercase
def free_email(self):
return self.user_name() + '@' + self.free_email_domain()
@lowercase
def company_email(self):
return self.user_name() + '@' + self.domain_name()
@lowercase
def free_email_domain(self):
return self.random_element(self.free_email_domains)
@lowercase
def ascii_email(self):
pattern = self.random_element(self.email_formats)
return self._to_ascii(
"".join(self.generator.parse(pattern).split(" ")),
)
@lowercase
def ascii_safe_email(self):
return self._to_ascii(
self.user_name() +
'@example.' +
self.random_element(self.safe_email_tlds),
)
@lowercase
def ascii_free_email(self):
return self._to_ascii(
self.user_name() + '@' + self.free_email_domain(),
)
@lowercase
def ascii_company_email(self):
return self._to_ascii(
self.user_name() + '@' + self.domain_name(),
)
@slugify_unicode
def user_name(self):
pattern = self.random_element(self.user_name_formats)
username = self._to_ascii(
self.bothify(self.generator.parse(pattern)).lower(),
)
return username
@lowercase
def hostname(self, levels=1):
"""
Produce a hostname with specified number of subdomain levels.
>>> hostname()
db-01.nichols-phillips.com
>>> hostname(0)
laptop-56
>>> hostname(2)
web-12.williamson-hopkins.jackson.com
"""
if levels < 1:
return self.random_element(self.hostname_prefixes) + '-' + self.numerify('##')
return self.random_element(self.hostname_prefixes) + '-' + self.numerify('##') + '.' + self.domain_name(levels)
@lowercase
def domain_name(self, levels=1):
"""
Produce an Internet domain name with the specified number of
subdomain levels.
>>> domain_name()
nichols-phillips.com
>>> domain_name(2)
williamson-hopkins.jackson.com
"""
if levels < 1:
raise ValueError("levels must be greater than or equal to 1")
if levels == 1:
return self.domain_word() + '.' + self.tld()
else:
return self.domain_word() + '.' + self.domain_name(levels - 1)
@lowercase
@slugify_unicode
def domain_word(self):
company = self.generator.format('company')
company_elements = company.split(' ')
company = self._to_ascii(company_elements.pop(0))
return company
def tld(self):
return self.random_element(self.tlds)
def url(self, schemes=None):
"""
:param schemes: a list of strings to use as schemes, one will chosen randomly.
If None, it will generate http and https urls.
Passing an empty list will result in schemeless url generation like "://domain.com".
:returns: a random url string.
"""
if schemes is None:
schemes = ['http', 'https']
pattern = '{}://{}'.format(
self.random_element(schemes) if schemes else "",
self.random_element(self.url_formats),
)
return self.generator.parse(pattern)
def _random_ipv4_address_from_subnet(self, subnet, network=False):
"""
Produces a random IPv4 address or network with a valid CIDR
from within a given subnet.
:param subnet: IPv4Network to choose from within
:param network: Return a network address, and not an IP address
"""
address = str(
subnet[self.generator.random.randint(
0, subnet.num_addresses - 1,
)],
)
if network:
address += '/' + str(self.generator.random.randint(
subnet.prefixlen,
subnet.max_prefixlen,
))
address = str(ip_network(address, strict=False))
return address
def _exclude_ipv4_networks(self, networks, networks_to_exclude):
"""
Exclude the list of networks from another list of networks
and return a flat list of new networks.
:param networks: List of IPv4 networks to exclude from
:param networks_to_exclude: List of IPv4 networks to exclude
:returns: Flat list of IPv4 networks
"""
for network_to_exclude in networks_to_exclude:
def _exclude_ipv4_network(network):
"""
Exclude a single network from another single network
and return a list of networks. Network to exclude
comes from the outer scope.
:param network: Network to exclude from
:returns: Flat list of IPv4 networks after exclusion.
If exclude fails because networks do not
overlap, a single element list with the
orignal network is returned. If it overlaps,
even partially, the network is excluded.
"""
try:
return list(network.address_exclude(network_to_exclude))
except ValueError:
# If networks overlap partially, `address_exclude`
# will fail, but the network still must not be used
# in generation.
if network.overlaps(network_to_exclude):
return []
else:
return [network]
networks = list(map(_exclude_ipv4_network, networks))
# flatten list of lists
networks = [
item for nested in networks for item in nested
]
return networks
def ipv4_network_class(self):
"""
Returns a IPv4 network class 'a', 'b' or 'c'.
:returns: IPv4 network class
"""
return self.random_element('abc')
def ipv4(self, network=False, address_class=None, private=None):
"""
Produce a random IPv4 address or network with a valid CIDR.
:param network: Network address
:param address_class: IPv4 address class (a, b, or c)
:param private: Public or private
:returns: IPv4
"""
if private is True:
return self.ipv4_private(address_class=address_class,
network=network)
elif private is False:
return self.ipv4_public(address_class=address_class,
network=network)
# if neither private nor public is required explicitly,
# generate from whole requested address space
if address_class:
all_networks = [_IPv4Constants._network_classes[address_class]]
else:
# if no address class is choosen, use whole IPv4 pool
all_networks = [ip_network('0.0.0.0/0')]
# exclude special networks
all_networks = self._exclude_ipv4_networks(
all_networks,
_IPv4Constants._excluded_networks,
)
# choose random network from the list
random_network = self.generator.random.choice(all_networks)
return self._random_ipv4_address_from_subnet(random_network, network)
def ipv4_private(self, network=False, address_class=None):
"""
Returns a private IPv4.
:param network: Network address
:param address_class: IPv4 address class (a, b, or c)
:returns: Private IPv4
"""
# compute private networks from given class
supernet = _IPv4Constants._network_classes[
address_class or self.ipv4_network_class()
]
private_networks = [
subnet for subnet in _IPv4Constants._private_networks
if subnet.overlaps(supernet)
]
# exclude special networks
private_networks = self._exclude_ipv4_networks(
private_networks,
_IPv4Constants._excluded_networks,
)
# choose random private network from the list
private_network = self.generator.random.choice(private_networks)
return self._random_ipv4_address_from_subnet(private_network, network)
def ipv4_public(self, network=False, address_class=None):
"""
Returns a public IPv4 excluding private blocks.
:param network: Network address
:param address_class: IPv4 address class (a, b, or c)
:returns: Public IPv4
"""
# compute public networks
public_networks = [_IPv4Constants._network_classes[
address_class or self.ipv4_network_class()
]]
# exclude private and excluded special networks
public_networks = self._exclude_ipv4_networks(
public_networks,
_IPv4Constants._private_networks +
_IPv4Constants._excluded_networks,
)
# choose random public network from the list
public_network = self.generator.random.choice(public_networks)
return self._random_ipv4_address_from_subnet(public_network, network)
def ipv6(self, network=False):
"""Produce a random IPv6 address or network with a valid CIDR"""
address = str(ip_address(self.generator.random.randint(
2 ** IPV4LENGTH, (2 ** IPV6LENGTH) - 1)))
if network:
address += '/' + str(self.generator.random.randint(0, IPV6LENGTH))
address = str(ip_network(address, strict=False))
return address
def mac_address(self):
mac = [self.generator.random.randint(0x00, 0xff) for _ in range(0, 6)]
return ":".join(map(lambda x: "%02x" % x, mac))
def uri_page(self):
return self.random_element(self.uri_pages)
def uri_path(self, deep=None):
deep = deep if deep else self.generator.random.randint(1, 3)
return "/".join(
self.random_elements(self.uri_paths, length=deep),
)
def uri_extension(self):
return self.random_element(self.uri_extensions)
def uri(self):
pattern = self.random_element(self.uri_formats)
return self.generator.parse(pattern)
@slugify
def slug(self, value=None):
"""Django algorithm"""
if value is None:
value = self.generator.text(20)
return value
def image_url(self, width=None, height=None):
"""
Returns URL to placeholder image
Example: http://placehold.it/640x480
"""
width_ = width or self.random_int(max=1024)
height_ = height or self.random_int(max=1024)
placeholder_url = self.random_element(self.image_placeholder_services)
return placeholder_url.format(width=width_, height=height_)