mirror of
https://github.com/retspen/webvirtcloud
synced 2026-11-08 19:26:48 +00:00
f9c8c36a6b
Every change to a filter (a rule or reference removed or added, the XML edited) undefined it and defined the new XML. libvirt refuses to undefine a filter a running VM uses, so none of these worked on such a filter; on an unused one a refused definition was undone by defining the old XML without its UUID, so the filter came back as another one. The filter is now defined again with its own UUID, which libvirt does in place, while VMs use it too; XML it cannot parse or apply to the running VMs is refused and reported. The XML editor shows the UUID. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
129 lines
4.3 KiB
Python
129 lines
4.3 KiB
Python
from xml.etree import ElementTree
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from vrtManager.connection import wvmConnect
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class wvmNWFilters(wvmConnect):
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def get_nwfilter_info(self, name):
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nwfilter = self.get_nwfilter(name)
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xml = nwfilter.XMLDesc(0)
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uuid = nwfilter.UUIDString()
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return {"name": name, "uuid": uuid, "xml": xml}
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def create_nwfilter(self, xml):
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self.wvm.nwfilterDefineXML(xml)
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def clone_nwfilter(self, name, cln_name):
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nwfilter = self.get_nwfilter(name)
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if nwfilter:
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tree = ElementTree.fromstring(nwfilter.XMLDesc(0))
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tree.set("name", cln_name)
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uuid = tree.find("uuid")
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tree.remove(uuid)
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self.create_nwfilter(ElementTree.tostring(tree).decode())
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class wvmNWFilter(wvmConnect):
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def __init__(self, host, login, passwd, conn, nwfiltername):
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wvmConnect.__init__(self, host, login, passwd, conn)
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self.nwfilter = self.get_nwfilter(nwfiltername)
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def _XMLDesc(self, flags):
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return self.nwfilter.XMLDesc(flags)
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def get_uuid(self):
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return self.nwfilter.UUIDString()
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def get_name(self):
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return self.nwfilter.name()
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def get_xml(self):
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"""With the UUID: defined again with it, libvirt changes the filter in
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place, also while a VM uses it. It refuses XML it cannot parse or
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apply to the running VMs' interfaces."""
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return self._XMLDesc(0)
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def get_filter_refs(self):
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tree = ElementTree.fromstring(self._XMLDesc(0))
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return [ref.get("filter") for ref in tree.findall("./filterref")]
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def get_rules(self):
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rules = []
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tree = ElementTree.fromstring(self._XMLDesc(0))
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for r in tree.findall("./rule"):
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rule_action = r.get("action")
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rule_direction = r.get("direction")
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rule_priority = r.get("priority")
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rule_statematch = r.get("statematch")
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rule_directives = r.find("./")
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if rule_directives is not None:
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rule_directives = ElementTree.tostring(rule_directives).decode()
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rule_info = {
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"action": rule_action,
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"direction": rule_direction,
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"priority": rule_priority,
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"statematch": rule_statematch,
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"directives": rule_directives,
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}
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rules.append(rule_info)
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return rules
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def delete_ref(self, name):
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tree = ElementTree.fromstring(self._XMLDesc(0))
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for ref in tree.findall("./filterref"):
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if name == ref.get("filter"):
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tree.remove(ref)
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break
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return ElementTree.tostring(tree).decode()
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@staticmethod
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def _rules(tree, action, direction, priority):
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# compared, not put into an XPath predicate: the values come from forms
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return [
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rule
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for rule in tree.findall("./rule")
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if (rule.get("action"), rule.get("direction"), rule.get("priority")) == (action, direction, priority)
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]
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def delete_rule(self, action, direction, priority):
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tree = ElementTree.fromstring(self._XMLDesc(0))
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rule_tree = self._rules(tree, action, direction, priority)
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if rule_tree:
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tree.remove(rule_tree[0])
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return ElementTree.tostring(tree).decode()
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def add_ref(self, name):
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tree = ElementTree.fromstring(self._XMLDesc(0))
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element = ElementTree.Element("filterref")
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element.attrib["filter"] = name
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tree.append(element)
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return ElementTree.tostring(tree).decode()
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def add_rule(self, xml):
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tree = ElementTree.fromstring(self._XMLDesc(0))
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rule = ElementTree.fromstring(xml)
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rule_action = rule.get("action")
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rule_direction = rule.get("direction")
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rule_priority = rule.get("priority")
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rule_directives = rule.find("./")
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rule_tree = self._rules(tree, rule_action, rule_direction, rule_priority)
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if rule_tree:
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rule_tree[0].append(rule_directives)
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else:
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element = ElementTree.Element("rule")
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element.attrib["action"] = rule_action
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element.attrib["direction"] = rule_direction
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element.attrib["priority"] = rule_priority
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element.append(rule_directives)
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tree.append(element)
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return ElementTree.tostring(tree).decode()
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