def get_macip_by_id(macip_id: int):
"""
通过id获取mac ip
:param macip_id: mac ip id
:return:
MacIP() # success
None #不存在
:raise NetworkError
"""
if not isinstance(macip_id, int) or macip_id < 0:
raise NetworkError(msg='MacIP ID参数有误')
try:
return MacIP.objects.filter(id=macip_id).first()
except Exception as e:
raise NetworkError(msg=f'查询MacIP时错误,{str(e)}')
def get_vlan_by_id(vlan_id: int):
"""
通过id获取镜像元数据模型对象
:param vlan_id: 镜像id
:return:
Vlan() # success
None #不存在
:raise NetworkError
"""
if not isinstance(vlan_id, int) or vlan_id < 0:
raise NetworkError(msg='子网ID参数有误')
try:
return Vlan.objects.select_related('group').filter(
id=vlan_id).first()
except Exception as e:
raise NetworkError(msg=f'查询子网时错误,{str(e)}')
def get_macip_by_ipv4(ipv4: str):
"""
通过ipv4获取mac ip
:param ipv4: ip地址
:return:
MacIP() # success
None #不存在
:raise NetworkError
"""
if not ipv4 or not isinstance(ipv4, str):
raise NetworkError(msg='ipv4参数有误')
try:
return MacIP.objects.filter(
ipv4=ipv4).select_related('vlan').first()
except Exception as e:
raise NetworkError(msg=f'查询MacIP时错误,{str(e)}')
def get_macips_by_vlan(vlan):
"""
获得vlan对应的所有macip记录
:param vlan:
:return: 直接返回查询结果
"""
try:
macips = MacIP.objects.filter(vlan=vlan)
except Exception as error:
raise NetworkError(msg='读取macips失败。' + str(error))
return macips
def generate_subips(self, vlan_id, from_ip, to_ip, write_database=False):
'''
生成子网ip
:param vlan_id:
:param from_ip: 开始ip
:param to_ip: 结束ip
:param write_database: True 生成并导入到数据库 False 生成不导入数据库
:return:
'''
reg = r"^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$"
if not (re.match(reg, from_ip) and re.match(reg, to_ip)):
raise NetworkError(msg='输入的ip地址错误')
ip_int = [[*map(int, ip.split('.'))] for ip in (from_ip, to_ip)]
ip_hex = [
ip[0] << 24 | ip[1] << 16 | ip[2] << 8 | ip[3] for ip in ip_int
]
if ip_hex[0] > ip_hex[1]:
raise NetworkError(msg='输入的ip地址错误')
subips = [
f'{ip >> 24}.{(ip & 0x00ff0000) >> 16}.{(ip & 0x0000ff00) >> 8}.{ip & 0x000000ff}'
for ip in range(ip_hex[0], ip_hex[1] + 1) if ip & 0xff
]
submacs = [
'C8:00:' + ':'.join(
map(lambda x: x[2:].upper().rjust(2, '0'),
map(lambda x: hex(int(x)), ip.split('.'))))
for ip in subips
]
if write_database:
with transaction.atomic():
for subip, submac in zip(subips, submacs):
try:
MacIP.objects.create(vlan_id=vlan_id,
ipv4=subip,
mac=submac)
except Exception as error:
raise NetworkError(msg='ip写入数据库失败，部分ip数据库中已有')
return [*zip(subips, submacs)]
def generate_subips(vlan_id, from_ip, to_ip, write_database=False):
"""
生成子网ip
:param vlan_id:
:param from_ip: 开始ip
:param to_ip: 结束ip
:param write_database: True 生成并导入到数据库 False 生成不导入数据库
:return:
"""
try:
ipv4_from = IPv4Address(from_ip)
ipv4_to = IPv4Address(to_ip)
except AddressValueError as e:
raise NetworkError(msg=f'输入的ip地址无效, {e}')
int_from = int(ipv4_from)
int_to = int(ipv4_to)
if int_from > int_to:
raise NetworkError(msg='请检查输入的ip地址的范围，起始ip不能大于结束ip地址')
l_ip_mac = []
for ip in range(int_from, int_to + 1):
if ip & 0xff:
ip_obj = IPv4Address(ip)
p = ip_obj.packed
mac = f'C8:00:{p[0]:02X}:{p[1]:02X}:{p[2]:02X}:{p[3]:02X}'
l_ip_mac.append((str(ip_obj), mac))
if write_database:
with transaction.atomic():
for subip, submac in l_ip_mac:
try:
MacIP.objects.create(vlan_id=vlan_id,
ipv4=subip,
mac=submac)
except Exception as error:
raise NetworkError(msg='ip写入数据库失败，部分ip数据库中已有')
return l_ip_mac