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#
# Copyright 2014 Red Hat, Inc.
#
# This work is licensed under the GNU GPLv2 or later.
# See the COPYING file in the top-level directory.
#
import re
import urllib.parse
from .logger import log
from . import xmlutil
def sanitize_xml_for_test_define(xml):
orig = xml
xml = re.sub("arch=\".*\"", "arch=\"i686\"", xml)
xml = re.sub("domain type=\".*\"", "domain type=\"test\"", xml)
xml = re.sub("machine type=\".*\"", "", xml)
xml = re.sub(">exe<", ">hvm<", xml)
xml = re.sub(">linux<", ">xen<", xml)
diff = xmlutil.diff(orig, xml)
if diff:
log.debug("virtinst test sanitizing diff\n:%s", diff)
return xml
class URI(object):
"""
Parse an arbitrary URI into its individual parts
"""
def __init__(self, uri):
self.uri = uri
split_uri = self._split(uri)
self.scheme = split_uri[0]
(self.username, self.hostname, self.path, self.query,
self.fragment) = map(urllib.parse.unquote, split_uri[1:])
self.transport = ''
if "+" in self.scheme:
self.scheme, self.transport = self.scheme.rsplit("+", 1)
self.port = ''
self.is_ipv6 = False
if self.hostname.startswith("[") and "]" in self.hostname:
if "]:" in self.hostname:
self.hostname, self.port = self.hostname.rsplit(":", 1)
self.hostname = "".join(self.hostname[1:].split("]", 1))
self.is_ipv6 = True
elif ":" in self.hostname:
self.hostname, self.port = self.hostname.split(":", 1)
self.host_is_ipv4_string = bool(re.match("^[0-9.]+$", self.hostname))
###################
# Private helpers #
###################
def _split(self, uri):
def splitnetloc(url, start=0):
for c in '/?#': # the order is important!
delim = url.find(c, start)
if delim >= 0:
break
else:
delim = len(url)
return url[start:delim], url[delim:]
scheme = username = netloc = query = fragment = ''
i = uri.find(":")
if i > 0:
scheme, uri = uri[:i].lower(), uri[i + 1:]
if uri[:2] == '//':
netloc, uri = splitnetloc(uri, 2)
offset = netloc.find("@")
if offset > 0:
username = netloc[0:offset]
netloc = netloc[offset + 1:]
if '#' in uri:
uri, fragment = uri.split('#', 1)
if '?' in uri:
uri, query = uri.split('?', 1)
return scheme, username, netloc, uri, query, fragment
class MagicURI(object):
"""
Handle magic virtinst URIs we use for the test suite and UI testing.
This allows a special URI to override various features like capabilities
XML, reported connection and libvirt versions, that enable testing
different code paths.
A magic URI has 3 parts:
1) Magic prefix __virtinst_test__
2) Actual openable URI, usually a test:/// URI
3) Comma separated options
The available options are:
* 'predictable': Generate predictable UUIDs, MAC addresses, and
temporary file names.
* 'fakeuri': The URI to advertise as the actual connection URI
* 'connver=%d': Override the connection (hv) version
* 'libver=%d': Override the libvirt version
* 'caps=%s': Points to a file with capabilities XML, that will
be returned in conn.getCapabilities. Ex.
files in test/capabilities-xml/
* 'domcaps=%s': Points to a file with domain capabilities XML, that
will be returned in conn.getDomainCapabilities
See tests/utils.py for example URLs
"""
VIRTINST_URI_MAGIC_PREFIX = "__virtinst_test__"
@staticmethod
def uri_is_magic(uri):
return uri.startswith(MagicURI.VIRTINST_URI_MAGIC_PREFIX)
def __init__(self, uri):
assert self.uri_is_magic(uri)
from .cli import parse_optstr_tuples
uri = uri.replace(self.VIRTINST_URI_MAGIC_PREFIX, "")
ret = uri.split(",", 1)
self.open_uri = ret[0]
opts = dict(parse_optstr_tuples(len(ret) > 1 and ret[1] or ""))
def pop_bool(field):
ret = field in opts
opts.pop(field, None)
return ret
self.predictable = pop_bool("predictable")
self.fakeuri = opts.pop("fakeuri", None)
self.capsfile = opts.pop("caps", None)
self.domcapsfile = opts.pop("domcaps", None)
self.conn_version = opts.pop("connver", None)
if self.conn_version:
self.conn_version = int(self.conn_version)
elif self.fakeuri:
self.conn_version = 10000000000
self.libvirt_version = opts.pop("libver", None)
if self.libvirt_version:
self.libvirt_version = int(self.libvirt_version)
self._err = None
if opts:
self._err = "MagicURI has unhandled opts=%s" % opts
##############
# Public API #
##############
def validate(self):
if self._err:
raise RuntimeError(self._err)
def overwrite_conn_functions(self, conn):
"""
After the connection is open, we need to stub out various functions
depending on what magic bits the user specified in the URI
"""
# Fake capabilities
if self.capsfile:
capsxml = open(self.capsfile).read()
conn.getCapabilities = lambda: capsxml
def _raise_nosupport_error(msg):
import libvirt
err = [libvirt.VIR_ERR_NO_SUPPORT, None, msg, None, None, None]
exc = libvirt.libvirtError(msg)
exc.err = err
raise exc
# Fake domcapabilities. This is insufficient since output should
# vary per type/arch/emulator combo, but it can be expanded later
# if needed
domcapsxml = None
if self.domcapsfile:
domcapsxml = open(self.domcapsfile).read()
def fake_domcaps(emulator, arch, machine, virttype, flags=0):
ignore = emulator
ignore = flags
ignore = machine
ignore = virttype
if domcapsxml:
ret = domcapsxml
if arch:
ret = re.sub("arch>.+</arch", "arch>%s</arch" % arch, ret)
return ret
# In libvirt 9.8.0 the test suite added a stub domcaps
# impl. Fall back to raising NO_SUPPORT for our magic URIs, so
# we can keep getting code coverage of the old code paths
_raise_nosupport_error(
"virtinst test driver fake domcaps nosupport")
conn.getDomainCapabilities = fake_domcaps
if self.fakeuri:
origcreate = conn.createXML
origdefine = conn.defineXML
def newcreate(xml, flags):
xml = sanitize_xml_for_test_define(xml)
return origcreate(xml, flags)
def newdefine(xml):
xml = sanitize_xml_for_test_define(xml)
return origdefine(xml)
conn.createXML = newcreate
conn.defineXML = newdefine
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