def clean(self):
"""Checks the CIDR to determine if it maps to a valid IPv4 network."""
if self.cidr:
try:
netaddr.cidr_to_glob(self.cidr)
except (TypeError, netaddr.AddrFormatError) as err:
raise me.ValidationError(err)
def interpreter_ip_to_section_ip(ips_list):
"""
提供一个功能，将CIDR表示的IP转换成 IP段的表示方法如，不连续的段会以#分隔开，注意以CIDR表示的IP，必须表示的是
一段或多段连续的IP，不可是一段连续的ip，一段独立的ip的形式：
['10.33.0.15/32','10.33.0.16/29','10.33.0.24/32']转换为"10.33.0.15-10.33.0.24"
:param ips_list: list，以CIDR表示的ip
:return:string 以ip网段表示的一个ip段
"""
ip_net = []
ip_string = ""
int_to_ip = lambda x: '.'.join(
[str(x / (256**i) % 256) for i in range(3, -1, -1)])
for ips in ips_list:
ip_net.append(netaddr.glob_to_iprange(netaddr.cidr_to_glob(ips)))
ip_start = ip_net[0].key()[1]
ip_end = ip_net[0].key()[2]
for index in xrange(len(ip_net)):
if ip_net[index].key()[1] - 1 <= ip_end:
ip_end = ip_net[index].key()[2]
if index == len(ip_net) - 1:
ip_end = ip_net[index].key()[2]
ip_string += "%s-%s#" % (int_to_ip(ip_start),
int_to_ip(ip_end))
else:
if index == len(ip_net) - 1:
ip_string += "%s-%s#" % (int_to_ip(ip_start),
int_to_ip(ip_end))
ip_string += "%s-%s#" % (int_to_ip(ip_start), int_to_ip(ip_end))
ip_start = ip_net[index].key()[1]
ip_end = ip_net[index].key()[2]
ip_string = ip_string[:-1]
return ip_string
def getIPv4LocalAddressList(self):
"""Returns currently configured local IPv4 addresses which are in ipv4_local_network"""
if not socket.AF_INET in netifaces.ifaddresses(self.name):
return []
return [dict(addr=q['addr'], netmask=q['netmask']) for q in
netifaces.ifaddresses(self.name)[socket.AF_INET] if netaddr.IPAddress(
q['addr'], 4) in netaddr.glob_to_iprange(
netaddr.cidr_to_glob(self.ipv4_local_network))]
def _generateRandomIPv4Address(self, netmask):
# no addresses found, generate new one
# Try 10 times to add address, raise in case if not possible
try_num = 10
while try_num > 0:
addr = random.choice([q for q in netaddr.glob_to_iprange(
netaddr.cidr_to_glob(self.ipv4_local_network))]).format()
if dict(addr=addr, netmask=netmask) not in self.getIPv4LocalAddressList():
# Checking the validity of the IPv6 address
if self._addSystemAddress(addr, netmask, False):
return dict(addr=addr, netmask=netmask)
try_num -= 1
raise AddressGenerationError(addr)
def clean_ip_networks(self):
ip_networks = self.cleaned_data["ip_networks"]
ip_networks = ip_networks.replace(" ", "").replace("\r\n","")
ip_networks_as_list = [cidr for cidr in ip_networks.split("," )]
cleaned_networks_list = []
for cidr in ip_networks_as_list:
if cidr:
if cidr != ",":
try:
cidr_as_glob = cidr_to_glob("%s" % cidr)
if valid_glob(cidr_as_glob):
cleaned_networks_list.append(cidr)
else:
raise forms.ValidationError(_("%s is not a valid ip range." % cidr))
except:
raise forms.ValidationError(_("%s is not a valid ip range." % cidr))
else:
pass
return ','.join(cleaned_networks_list)
def clean_ip_networks(self):
ip_networks = self.cleaned_data["ip_networks"]
ip_networks = ip_networks.replace(" ", "").replace("\r\n", "")
ip_networks_as_list = [cidr for cidr in ip_networks.split(",")]
cleaned_networks_list = []
for cidr in ip_networks_as_list:
if cidr:
if cidr != ",":
try:
cidr_as_glob = cidr_to_glob("%s" % cidr)
if valid_glob(cidr_as_glob):
cleaned_networks_list.append(cidr)
else:
raise forms.ValidationError(
_("%s is not a valid ip range." % cidr))
except:
raise forms.ValidationError(
_("%s is not a valid ip range." % cidr))
else:
pass
return ','.join(cleaned_networks_list)
def test_cidr_to_glob():
assert cidr_to_glob('10.0.0.1/32') == '10.0.0.1'
assert cidr_to_glob('192.0.2.0/24') == '192.0.2.*'
assert cidr_to_glob('172.16.0.0/12') == '172.16-31.*.*'
assert cidr_to_glob('0.0.0.0/0') == '*.*.*.*'
