mirror of
https://github.com/retspen/webvirtcloud
synced 2024-12-27 00:25:22 +00:00
382 lines
14 KiB
Python
382 lines
14 KiB
Python
from libvirt import (
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VIR_NETWORK_SECTION_IP_DHCP_HOST,
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VIR_NETWORK_UPDATE_AFFECT_CONFIG,
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VIR_NETWORK_UPDATE_AFFECT_LIVE,
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VIR_NETWORK_UPDATE_COMMAND_ADD_LAST,
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VIR_NETWORK_UPDATE_COMMAND_DELETE,
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VIR_NETWORK_UPDATE_COMMAND_MODIFY, libvirtError)
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from lxml import etree
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from vrtManager import util
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from vrtManager.connection import wvmConnect
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from vrtManager.IPy import IP
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def network_size(subnet, dhcp=None):
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"""
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Func return gateway, mask and dhcp pool.
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"""
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mask = IP(subnet).strNetmask()
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addr = IP(subnet)
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gateway = addr[1].strCompressed()
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if addr.version() == 4:
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dhcp_pool = [addr[2].strCompressed(), addr[addr.len() - 2].strCompressed()]
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if addr.version() == 6:
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mask = mask.lstrip("/") if "/" in mask else mask
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dhcp_pool = [IP(addr[0].strCompressed() + hex(256)), IP(addr[0].strCompressed() + hex(512 - 1))]
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return (gateway, mask, dhcp_pool) if dhcp else (gateway, mask, None)
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class wvmNetworks(wvmConnect):
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def get_networks_info(self):
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get_networks = self.get_networks()
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networks = []
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for network in get_networks:
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net = self.get_network(network)
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net_status = net.isActive()
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try:
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net_bridge = net.bridgeName()
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except libvirtError:
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net_bridge = util.get_xml_path(net.XMLDesc(0), "/network/forward/interface/@dev")
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net_forward = util.get_xml_path(net.XMLDesc(0), "/network/forward/@mode")
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networks.append({
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"name": network,
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"status": net_status,
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"device": net_bridge,
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"forward": net_forward
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})
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return networks
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def define_network(self, xml):
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self.wvm.networkDefineXML(xml)
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def create_network(
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self,
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name,
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forward,
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ipv4,
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gateway,
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mask,
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dhcp4,
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ipv6,
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gateway6,
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prefix6,
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dhcp6,
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bridge,
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openvswitch,
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fixed=False,
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):
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xml = f"""
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<network>
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<name>{name}</name>"""
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if forward in ["nat", "route", "bridge"]:
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xml += f"""<forward mode='{forward}'/>"""
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if forward == "macvtap":
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xml += f"""<forward mode='bridge'>
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<interface dev='{bridge}'/>
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</forward>"""
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else:
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xml += """<bridge """
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if forward in ["nat", "route", "none"]:
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xml += """stp='on' delay='0'"""
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if forward == "bridge":
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xml += f"""name='{bridge}'"""
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xml += """/>"""
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if openvswitch is True:
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xml += """<virtualport type='openvswitch'/>"""
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if forward not in ["bridge", "macvtap"]:
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if ipv4:
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xml += f"""<ip address='{gateway}' netmask='{mask}'>"""
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if dhcp4:
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xml += f"""<dhcp>
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<range start='{dhcp4[0]}' end='{dhcp4[1]}' />"""
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if fixed:
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fist_oct = int(dhcp4[0].strip().split(".")[3])
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last_oct = int(dhcp4[1].strip().split(".")[3])
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for ip in range(fist_oct, last_oct + 1):
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xml += f"""<host mac='{util.randomMAC()}' ip='{gateway[:-2]}.{ip}' />"""
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xml += """</dhcp>"""
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xml += """</ip>"""
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if ipv6:
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xml += f"""<ip family='ipv6' address='{gateway6}' prefix='{prefix6}'>"""
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if dhcp6:
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xml += f"""<dhcp>
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<range start='{dhcp6[0]}' end='{dhcp6[1]}' />"""
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xml += """</dhcp>"""
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xml += """</ip>"""
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xml += """</network>"""
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self.define_network(xml)
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net = self.get_network(name)
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net.create()
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net.setAutostart(1)
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class wvmNetwork(wvmConnect):
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def __init__(self, host, login, passwd, conn, net):
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wvmConnect.__init__(self, host, login, passwd, conn)
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self.leases = None
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self.net = self.get_network(net)
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self.parent_count = len(self.get_ip_networks())
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def get_name(self):
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return self.net.name()
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def _XMLDesc(self, flags):
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return self.net.XMLDesc(flags)
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def get_autostart(self):
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return self.net.autostart()
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def set_autostart(self, value):
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self.net.setAutostart(value)
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def is_active(self):
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return self.net.isActive()
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def get_uuid(self):
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return self.net.UUIDString()
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def get_bridge_device(self):
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try:
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return self.net.bridgeName()
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except Exception:
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return util.get_xml_path(self._XMLDesc(0), "/network/forward/interface/@dev")
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def start(self):
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self.net.create()
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def stop(self):
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self.net.destroy()
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def delete(self):
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self.net.undefine()
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def update(self, command, section, xml, parentIndex, flags=0):
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return self.net.update(command, section, parentIndex, xml, flags)
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def get_ip_networks(self):
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ip_networks = {}
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xml = self._XMLDesc(0)
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if util.get_xml_path(xml, "/network/ip") is None:
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return ip_networks
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tree = etree.fromstring(xml)
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ips = tree.findall(".ip")
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for ip in ips:
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address_str = ip.get("address")
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netmask_str = ip.get("netmask")
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prefix = ip.get("prefix")
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family = ip.get("family", "ipv4")
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if prefix:
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prefix = int(prefix)
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base = 32 if family == "ipv4" else 128
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binstr = prefix * "1" + (base - prefix) * "0"
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netmask_str = str(IP(int(binstr, base=2)))
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if netmask_str:
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netmask = IP(netmask_str)
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gateway = IP(address_str)
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network = IP(gateway.int() & netmask.int())
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netmask_str = netmask_str if family == "ipv4" else str(prefix)
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ret = IP(str(network) + "/" + netmask_str)
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else:
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ret = IP(str(address_str))
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ip_networks[family] = ret
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return ip_networks
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def get_network_mac(self):
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xml = self._XMLDesc(0)
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return util.get_xml_path(xml, "/network/mac/@address")
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def get_network_forward(self):
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xml = self._XMLDesc(0)
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fw = util.get_xml_path(xml, "/network/forward/@mode")
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forward_dev = util.get_xml_path(xml, "/network/forward/@dev")
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return [fw, forward_dev]
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def get_dhcp_range(self, family="ipv4"):
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xml = self._XMLDesc(0)
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if family == "ipv4":
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dhcpstart = util.get_xml_path(xml, "/network/ip[not(@family='ipv6')]/dhcp/range[1]/@start")
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dhcpend = util.get_xml_path(xml, "/network/ip[not(@family='ipv6')]/dhcp/range[1]/@end")
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if family == "ipv6":
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dhcpstart = util.get_xml_path(xml, "/network/ip[@family='ipv6']/dhcp/range[1]/@start")
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dhcpend = util.get_xml_path(xml, "/network/ip[@family='ipv6']/dhcp/range[1]/@end")
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return None if not dhcpstart or not dhcpend else [IP(dhcpstart), IP(dhcpend)]
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def get_dhcp_range_start(self, family="ipv4"):
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dhcp = self.get_dhcp_range(family)
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return dhcp[0] if dhcp else None
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def get_dhcp_range_end(self, family="ipv4"):
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dhcp = self.get_dhcp_range(family)
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return dhcp[1] if dhcp else None
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def can_pxe(self):
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xml = self._XMLDesc(0)
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forward = self.get_network_forward()[0]
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if forward and forward != "nat":
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return True
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return bool(util.get_xml_path(xml, "/network/ip/dhcp/bootp/@file"))
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def get_dhcp_host_addr(self, family="ipv4"):
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result = []
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tree = etree.fromstring(self._XMLDesc(0))
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for ipdhcp in tree.findall("./ip"):
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if family == "ipv4":
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if ipdhcp.get("family") is not None:
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continue
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hosts = ipdhcp.findall("./dhcp/host")
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for host in hosts:
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host_ip = host.get("ip")
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mac = host.get("mac")
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name = host.get("name", "")
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result.append({"ip": host_ip, "mac": mac, "name": name})
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return result
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if family == "ipv6":
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hosts = tree.xpath("./ip[@family='ipv6']/dhcp/host")
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for host in hosts:
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host_ip = host.get("ip")
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host_id = host.get("id")
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name = host.get("name", "")
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result.append({"ip": host_ip, "id": host_id, "name": name})
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return result
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def modify_dhcp_range(self, range_start, range_end, family="ipv4"):
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if not self.is_active():
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tree = etree.fromstring(self._XMLDesc(0))
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if family == "ipv4":
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dhcp_range = tree.xpath("./ip[not(@family='ipv6')]/dhcp/range")
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if family == "ipv6":
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dhcp_range = tree.xpath("./ip[@family='ipv6']/dhcp/range")
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dhcp_range[0].set("start", range_start)
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dhcp_range[0].set("end", range_end)
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self.wvm.networkDefineXML(etree.tostring(tree).decode())
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def delete_fixed_address(self, ip, family="ipv4"):
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tree = etree.fromstring(self._XMLDesc(0))
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if family == "ipv4":
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hosts = tree.xpath("/network/ip[not(@family='ipv6')]/dhcp/host")
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parent_index = self.parent_count - 2
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if family == "ipv6":
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hosts = tree.xpath("/network/ip[@family='ipv6']/dhcp/host")
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parent_index = self.parent_count - 1
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for h in hosts:
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if h.get("ip") == ip:
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if family == "ipv4":
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new_xml = f'<host mac="{h.get("mac")}" name="{h.get("name")}" ip="{ip}"/>'
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if family == "ipv6":
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new_xml = f'<host id="{h.get("id")}" name="{h.get("name")}" ip="{ip}"/>'
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self.update(
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VIR_NETWORK_UPDATE_COMMAND_DELETE,
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VIR_NETWORK_SECTION_IP_DHCP_HOST,
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new_xml,
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parent_index,
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VIR_NETWORK_UPDATE_AFFECT_LIVE | VIR_NETWORK_UPDATE_AFFECT_CONFIG,
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)
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break
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def modify_fixed_address(self, name, address, mac_duid, family="ipv4"):
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tree = etree.fromstring(self._XMLDesc(0))
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if family == "ipv4":
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new_xml = '<host mac="{}" {} ip="{}"/>'.format(mac_duid, 'name="' + name + '"' if name else "", IP(address))
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hosts = tree.xpath("./ip[not(@family='ipv6')]/dhcp/host")
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compare_var = "mac"
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parent_index = self.parent_count - 2
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if family == "ipv6":
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new_xml = '<host id="{}" {} ip="{}"/>'.format(mac_duid, 'name="' + name + '"' if name else "", IP(address))
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hosts = tree.xpath("./ip[@family='ipv6']/dhcp/host")
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compare_var = "id"
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parent_index = self.parent_count - 1
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new_host_xml = etree.fromstring(new_xml)
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host = next((h for h in hosts if h.get(compare_var) == mac_duid), None)
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if host is None:
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self.update(
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VIR_NETWORK_UPDATE_COMMAND_ADD_LAST,
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VIR_NETWORK_SECTION_IP_DHCP_HOST,
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new_xml,
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parent_index,
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VIR_NETWORK_UPDATE_AFFECT_LIVE | VIR_NETWORK_UPDATE_AFFECT_CONFIG,
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)
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else:
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# change the host
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if host.get("name") == new_host_xml.get("name") and host.get("ip") == new_host_xml.get("ip"):
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return False
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else:
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self.update(
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VIR_NETWORK_UPDATE_COMMAND_MODIFY,
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VIR_NETWORK_SECTION_IP_DHCP_HOST,
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new_xml,
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parent_index,
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VIR_NETWORK_UPDATE_AFFECT_LIVE | VIR_NETWORK_UPDATE_AFFECT_CONFIG,
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)
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def get_qos(self):
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qos_values = {}
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tree = etree.fromstring(self._XMLDesc(0))
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qos = tree.xpath("/network/bandwidth")
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if qos:
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qos = qos[0]
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in_qos = qos.find("inbound")
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if in_qos is not None:
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in_av = in_qos.get("average")
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in_peak = in_qos.get("peak")
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in_burst = in_qos.get("burst")
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qos_values["inbound"] = {"average": in_av, "peak": in_peak, "burst": in_burst}
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out_qos = qos.find("outbound")
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if out_qos is not None:
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out_av = out_qos.get("average")
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out_peak = out_qos.get("peak")
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out_burst = out_qos.get("burst")
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qos_values["outbound"] = {"average": out_av, "peak": out_peak, "burst": out_burst}
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return qos_values
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def set_qos(self, direction, average, peak, burst):
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if direction not in ("inbound","outbound"):
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raise Exception("Direction must be inbound or outbound")
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xml = f"<{direction} average='{average}' peak='{peak}' burst='{burst}'/>"
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tree = etree.fromstring(self._XMLDesc(0))
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band = tree.xpath("/network/bandwidth")
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if len(band) == 0:
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xml = f"<bandwidth>{xml}</bandwidth>"
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tree.append(etree.fromstring(xml))
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else:
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direct = band[0].find(direction)
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if direct is not None:
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parent = direct.getparent()
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parent.remove(direct)
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parent.append(etree.fromstring(xml))
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else:
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band[0].append(etree.fromstring(xml))
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new_xml = etree.tostring(tree).decode()
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self.wvm.networkDefineXML(new_xml)
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def unset_qos(self, direction):
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tree = etree.fromstring(self._XMLDesc(0))
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for direct in tree.xpath(f"/network/bandwidth/{direction}"):
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parent = direct.getparent()
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parent.remove(direct)
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self.wvm.networkDefineXML(etree.tostring(tree).decode())
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def edit_network(self, new_xml):
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self.wvm.networkDefineXML(new_xml)
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def refresh_dhcp_leases(self):
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try:
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self.leases = self.net.DHCPLeases()
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except Exception as e:
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self.leases = []
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raise f"Error getting {self} DHCP leases: {e}" from e
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def get_dhcp_leases(self):
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if self.leases is None:
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self.refresh_dhcp_leases()
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return self.leases
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