def getCIFCredentials(dconf, session, prefix=""):
credentials = None
domain = None
if (containsCredentials(dconf, prefix)):
username, domain = splitDomainAndUsername(dconf['username'])
credentials = {}
credentials["USER"] = util.to_plain_string(username)
util.SMlog("CIFS user = {user}".format(user=credentials["USER"]))
key_password, key_secret = getDconfPasswordKey(prefix)
if key_secret in dconf:
password = util.get_secret(session, dconf[key_secret])
if password is not None:
util.SMlog("Obtained CIFS password via secret")
else:
password = dconf[key_password]
if password is not None:
util.SMlog("Obtained CIFS password")
credentials["PASSWD"] = util.to_plain_string(password)
if credentials["PASSWD"] is not None:
util.SMlog("Obtained CIFS plain text password")
domain = util.to_plain_string(domain)
else:
util.SMlog("NOTE: No CIFS credentials found in dconf")
return credentials, domain
def _walkXML(parent):
Dict = {}
if not parent.hasChildNodes():
if parent.nodeValue == None:
return ''
for node in parent.childNodes:
if node.nodeType == Node.ELEMENT_NODE:
# Print the element name
Dict[util.to_plain_string(node.nodeName)] = ""
# Walk over any text nodes in the current node
content = []
for child in node.childNodes:
if child.nodeType == Node.TEXT_NODE and \
child.nodeValue.strip():
content.append(child.nodeValue.strip())
if content:
strContent = string.join(content)
Dict[util.to_plain_string(node.nodeName)] = util.to_plain_string(strContent)
else:
# Walk the child nodes
Dict[util.to_plain_string(node.nodeName)] = _walkXML(node)
return Dict
def load(self, sr_uuid):
"""Initialises the SR"""
# First of all, check we've got the correct keys in dconf
if 'location' not in self.dconf:
raise xs_errors.XenError('ConfigLocationMissing')
# Construct the path we're going to mount under:
if "legacy_mode" in self.dconf:
self.mountpoint = util.to_plain_string(self.dconf['location'])
else:
# Verify the target address
self._checkTargetStr(self.dconf['location'])
self.mountpoint = os.path.join(SR.MOUNT_BASE, sr_uuid)
# Add on the iso_path value if there is one
if "iso_path" in self.dconf:
iso_path = util.to_plain_string(self.dconf['iso_path'])
if iso_path.startswith("/"):
iso_path = iso_path[1:]
self.path = os.path.join(self.mountpoint, iso_path)
else:
self.path = self.mountpoint
# Handle optional dconf attributes
self.nfsversion = nfs.validate_nfsversion(self.dconf.get('nfsversion'))
# Fill the required SMB version
self.smbversion = SMB_VERSION_3
# Check if smb version is specified from client
self.is_smbversion_specified = False
# Some info we need:
self.sr_vditype = 'phy'
def _walkXML(parent):
Dict = {}
if not parent.hasChildNodes():
if parent.nodeValue is None:
return ''
for node in parent.childNodes:
if node.nodeType == Node.ELEMENT_NODE:
# Print the element name
Dict[util.to_plain_string(node.nodeName)] = ""
# Walk over any text nodes in the current node
content = []
for child in node.childNodes:
if child.nodeType == Node.TEXT_NODE and \
child.nodeValue.strip():
content.append(child.nodeValue.strip())
if content:
strContent = string.join(content)
Dict[util.to_plain_string(
node.nodeName)] = util.to_plain_string(strContent)
else:
# Walk the child nodes
Dict[util.to_plain_string(node.nodeName)] = _walkXML(node)
return Dict
def getMountOptions(self):
"""Creates option string based on parameters provided"""
options = ['sec=ntlm',
'cache=loose',
'vers=3.0',
'actimeo=0'
]
if self.dconf.has_key('username') and \
(self.dconf.has_key('password') or
self.dconf.has_key('password_secret')):
dom_username = self.dconf['username'].split('\\')
if len(dom_username) == 1:
domain = None
username = dom_username[0]
elif len(dom_username) == 2:
domain = dom_username[0]
username = dom_username[1]
else:
raise SMBException("A maximum of 2 tokens are expected "
"(<domain>\<username>). {} were given."
.format(len(dom_username)))
domain = util.to_plain_string(domain)
username = util.to_plain_string(username)
if self.dconf.has_key('password_secret'):
password = util.get_secret(
self.session,
self.dconf['password_secret']
)
else:
password = self.dconf['password']
password = util.to_plain_string(password)
cred_str = 'username={}\npassword={}\n'.format(username, password)
if domain:
cred_str += 'domain={}\n'.format(domain)
# Open credentials file and truncate
try:
with open(self.credentials, 'w') as f:
f.write(cred_str)
except IOError, e:
raise SMBException("Failed to create credentials file")
options.append('credentials=%s' % self.credentials)
def getMountOptions(self):
"""Creates option string based on parameters provided"""
options = ['sec=ntlm',
'cache=loose',
'vers=3.0',
'actimeo=0'
]
if self.dconf.has_key('username') and \
(self.dconf.has_key('password') or
self.dconf.has_key('password_secret')):
dom_username = self.dconf['username'].split('\\')
if len(dom_username) == 1:
domain = None
username = dom_username[0]
elif len(dom_username) == 2:
domain = dom_username[0]
username = dom_username[1]
else:
raise SMBException("A maximum of 2 tokens are expected "
"(<domain>\<username>). {} were given."
.format(len(dom_username)))
domain = util.to_plain_string(domain)
username = util.to_plain_string(username)
if self.dconf.has_key('password_secret'):
password = util.get_secret(
self.session,
self.dconf['password_secret']
)
else:
password = self.dconf['password']
password = util.to_plain_string(password)
cred_str = 'username={}\npassword={}\n'.format(username, password)
if domain:
cred_str += 'domain={}\n'.format(domain)
# Open credentials file and truncate
try:
with open(self.credentials, 'w') as f:
f.write(cred_str)
except IOError, e:
raise SMBException("Failed to create credentials file")
options.append('credentials=%s' % self.credentials)
def load(self, sr_uuid):
"""Initialises the SR"""
if not 'location' in self.dconf:
raise xs_errors.XenError('ConfigLocationMissing')
self.path = util.to_plain_string(self.dconf['location'])
self.sr_vditype = 'file'
def synchronise_gone(self):
"""Delete XenAPI record for old disks"""
for location in self.gone:
vdi = self.get_xenapi_vdi(location)
util.SMlog("Forgetting VDI with location=%s uuid=%s" %
(util.to_plain_string(vdi['location']), vdi['uuid']))
self.sr.forget_vdi(vdi['uuid'])
def vdi(self, uuid):
"""Create a VDI class. If the VDI does not exist, we determine
here what its filename should be."""
filename = util.to_plain_string(self.srcmd.params.get('vdi_location'))
if filename is None:
smconfig = self.srcmd.params.get('vdi_sm_config')
if smconfig is None:
# uh, oh, a VDI.from_uuid()
import XenAPI
_VDI = self.session.xenapi.VDI
try:
vdi_ref = _VDI.get_by_uuid(uuid)
except XenAPI.Failure as e:
if e.details[0] != 'UUID_INVALID':
raise
else:
filename = _VDI.get_location(vdi_ref)
if filename is None:
# Get the filename from sm-config['path'], or use the UUID
# if the path param doesn't exist.
if smconfig and 'path' in smconfig:
filename = smconfig['path']
if not self.vdi_path_regex.match(filename):
raise xs_errors.XenError('VDICreate', \
opterr='Invalid path "%s"' % filename)
else:
filename = '%s.img' % uuid
return ISOVDI(self, filename)
def in_sync_with_xenapi_record(self, x):
"""Returns true if this VDI is in sync with the supplied XenAPI record"""
if self.location <> util.to_plain_string(x['location']):
util.SMlog("location %s <> %s" % (self.location, x['location']))
return False
if self.read_only <> x['read_only']:
util.SMlog("read_only %s <> %s" % (self.read_only, x['read_only']))
return False
if str(self.size) <> x['virtual_size']:
util.SMlog("virtual_size %s <> %s" % (self.size, x['virtual_size']))
return False
if str(self.utilisation) <> x['physical_utilisation']:
util.SMlog("utilisation %s <> %s" % (self.utilisation, x['physical_utilisation']))
return False
sm_config = util.default(self, "sm_config", lambda: {})
if set(sm_config.keys()) <> set(x['sm_config'].keys()):
util.SMlog("sm_config %s <> %s" % (repr(sm_config), repr(x['sm_config'])))
return False
for k in sm_config.keys():
if sm_config[k] <> x['sm_config'][k]:
util.SMlog("sm_config %s <> %s" % (repr(sm_config), repr(x['sm_config'])))
return False
if self.cbt_enabled != x['cbt_enabled']:
util.SMlog("cbt_enabled %s <> %s" % (
self.cbt_enabled, x['cbt_enabled']))
return False
return True
def in_sync_with_xenapi_record(self, x):
"""Returns true if this VDI is in sync with the supplied XenAPI record"""
if self.location <> util.to_plain_string(x['location']):
util.SMlog("location %s <> %s" % (self.location, x['location']))
return False
if self.read_only <> x['read_only']:
util.SMlog("read_only %s <> %s" % (self.read_only, x['read_only']))
return False
if str(self.size) <> x['virtual_size']:
util.SMlog("virtual_size %s <> %s" %
(self.size, x['virtual_size']))
return False
if str(self.utilisation) <> x['physical_utilisation']:
util.SMlog("utilisation %s <> %s" %
(self.utilisation, x['physical_utilisation']))
return False
sm_config = util.default(self, "sm_config", lambda: {})
if set(sm_config.keys()) <> set(x['sm_config'].keys()):
util.SMlog("sm_config %s <> %s" %
(repr(sm_config), repr(x['sm_config'])))
return False
for k in sm_config.keys():
if sm_config[k] <> x['sm_config'][k]:
util.SMlog("sm_config %s <> %s" %
(repr(sm_config), repr(x['sm_config'])))
return False
if self.cbt_enabled != x['cbt_enabled']:
util.SMlog("cbt_enabled %s <> %s" %
(self.cbt_enabled, x['cbt_enabled']))
return False
return True
def __init__(self, sr):
self.sr = sr
self.__xenapi_locations = {}
self.__xenapi_records = util.list_VDI_records_in_sr(sr)
for vdi in self.__xenapi_records.keys():
self.__xenapi_locations[util.to_plain_string(
self.__xenapi_records[vdi]['location'])] = vdi
self.__sm_records = {}
for vdi in sr.vdis.values():
# We initialise the sm_config field with the values from the database
# The sm_config_overrides contains any new fields we want to add to
# sm_config, and also any field to delete (by virtue of having
# sm_config_overrides[key]=None)
try:
if not hasattr(vdi, "sm_config"):
vdi.sm_config = self.__xenapi_records[
self.__xenapi_locations[
vdi.location]]['sm_config'].copy()
except:
util.SMlog("missing config for vdi: %s" % vdi.location)
vdi.sm_config = {}
vdi._override_sm_config(vdi.sm_config)
self.__sm_records[vdi.location] = vdi
xenapi_locations = set(self.__xenapi_locations.keys())
sm_locations = set(self.__sm_records.keys())
# These ones are new on disk
self.new = sm_locations.difference(xenapi_locations)
# These have disappeared from the disk
self.gone = xenapi_locations.difference(sm_locations)
# These are the ones which are still present but might have changed...
existing = sm_locations.intersection(xenapi_locations)
# Synchronise the uuid fields using the location as the primary key
# This ensures we know what the UUIDs are even though they aren't stored
# in the storage backend.
for location in existing:
sm_vdi = self.get_sm_vdi(location)
xenapi_vdi = self.get_xenapi_vdi(location)
sm_vdi.uuid = util.default(sm_vdi, "uuid",
lambda: xenapi_vdi['uuid'])
# Only consider those whose configuration looks different
self.existing = filter(
lambda x: not (self.get_sm_vdi(x).in_sync_with_xenapi_record(
self.get_xenapi_vdi(x))), existing)
if len(self.new) <> 0:
util.SMlog("new VDIs on disk: " + repr(self.new))
if len(self.gone) <> 0:
util.SMlog("VDIs missing from disk: " + repr(self.gone))
if len(self.existing) <> 0:
util.SMlog("VDIs changed on disk: " + repr(self.existing))
def getCIFCredentials(dconf, session, prefix=""):
credentials = None
domain = None
if (containsCredentials(dconf, prefix)):
username, domain = splitDomainAndUsername(dconf['username'])
credentials = {}
credentials["USER"] = util.to_plain_string(username)
key_password, key_secret = getDconfPasswordKey(prefix)
if key_secret in dconf:
password = util.get_secret(session, dconf[key_secret])
else:
password = dconf[key_password]
credentials["PASSWD"] = util.to_plain_string(password)
domain = util.to_plain_string(domain)
return credentials, domain
def synchronise_gone(self):
"""Delete XenAPI record for old disks"""
for location in self.gone:
vdi = self.get_xenapi_vdi(location)
util.SMlog("Forgetting VDI with location=%s uuid=%s" % (util.to_plain_string(vdi['location']), vdi['uuid']))
try:
self.sr.forget_vdi(vdi['uuid'])
except XenAPI.Failure, e:
if e.details == "HANDLE_INVALID" or e.details == "UUID_INVALID":
util.SMlog("VDI %s not found, ignoring exception" % vdi['uuid'])
else:
raise
def synchronise_gone(self):
"""Delete XenAPI record for old disks"""
for location in self.gone:
vdi = self.get_xenapi_vdi(location)
util.SMlog("Forgetting VDI with location=%s uuid=%s" % (util.to_plain_string(vdi['location']), vdi['uuid']))
try:
self.sr.forget_vdi(vdi['uuid'])
except XenAPI.Failure, e:
if util.isInvalidVDI(e):
util.SMlog("VDI %s not found, ignoring exception" \
% vdi['uuid'])
else:
raise
def synchronise_gone(self):
"""Delete XenAPI record for old disks"""
for location in self.gone:
vdi = self.get_xenapi_vdi(location)
util.SMlog("Forgetting VDI with location=%s uuid=%s" % (util.to_plain_string(vdi['location']), vdi['uuid']))
try:
self.sr.forget_vdi(vdi['uuid'])
except XenAPI.Failure, e:
if util.isInvalidVDI(e):
util.SMlog("VDI %s not found, ignoring exception" \
% vdi['uuid'])
else:
raise
def synchronise_gone(self):
"""Delete XenAPI record for old disks"""
for location in self.gone:
vdi = self.get_xenapi_vdi(location)
util.SMlog("Forgetting VDI with location=%s uuid=%s" %
(util.to_plain_string(vdi['location']), vdi['uuid']))
try:
self.sr.forget_vdi(vdi['uuid'])
except XenAPI.Failure, e:
if e.details == "HANDLE_INVALID" or e.details == "UUID_INVALID":
util.SMlog("VDI %s not found, ignoring exception" % uuid)
else:
raise
def __init__(self, sr):
self.sr = sr
self.__xenapi_locations = {}
self.__xenapi_records = util.list_VDI_records_in_sr(sr)
for vdi in self.__xenapi_records.keys():
self.__xenapi_locations[util.to_plain_string(self.__xenapi_records[vdi]['location'])] = vdi
self.__sm_records = {}
for vdi in sr.vdis.values():
# We initialise the sm_config field with the values from the database
# The sm_config_overrides contains any new fields we want to add to
# sm_config, and also any field to delete (by virtue of having
# sm_config_overrides[key]=None)
try:
if not hasattr(vdi, "sm_config"):
vdi.sm_config = self.__xenapi_records[self.__xenapi_locations[vdi.location]]['sm_config'].copy()
except:
util.SMlog("missing config for vdi: %s" % vdi.location)
vdi.sm_config = {}
vdi._override_sm_config(vdi.sm_config)
self.__sm_records[vdi.location] = vdi
xenapi_locations = set(self.__xenapi_locations.keys())
sm_locations = set(self.__sm_records.keys())
# These ones are new on disk
self.new = sm_locations.difference(xenapi_locations)
# These have disappeared from the disk
self.gone = xenapi_locations.difference(sm_locations)
# These are the ones which are still present but might have changed...
existing = sm_locations.intersection(xenapi_locations)
# Synchronise the uuid fields using the location as the primary key
# This ensures we know what the UUIDs are even though they aren't stored
# in the storage backend.
for location in existing:
sm_vdi = self.get_sm_vdi(location)
xenapi_vdi = self.get_xenapi_vdi(location)
sm_vdi.uuid = util.default(sm_vdi, "uuid", lambda: xenapi_vdi['uuid'])
# Only consider those whose configuration looks different
self.existing = filter(lambda x:not(self.get_sm_vdi(x).in_sync_with_xenapi_record(self.get_xenapi_vdi(x))), existing)
if len(self.new) <> 0:
util.SMlog("new VDIs on disk: " + repr(self.new))
if len(self.gone) <> 0:
util.SMlog("VDIs missing from disk: " + repr(self.gone))
if len(self.existing) <> 0:
util.SMlog("VDIs changed on disk: " + repr(self.existing))
def vdi(self, uuid):
"""Create a VDI class. If the VDI does not exist, we determine
here what its filename should be."""
filename = util.to_plain_string(self.srcmd.params.get('vdi_location'))
if filename is None:
smconfig = self.srcmd.params.get('vdi_sm_config')
if smconfig is None:
# uh, oh, a VDI.from_uuid()
_VDI = self.session.xenapi.VDI
try:
vdi_ref = _VDI.get_by_uuid(uuid)
except XenAPI.Failure, e:
if e.details[0] != 'UUID_INVALID':
raise
else:
filename = _VDI.get_location(vdi_ref)
def synchronise_gone(self):
"""Delete XenAPI record for old disks"""
for location in self.gone:
vdi = self.get_xenapi_vdi(location)
util.SMlog("Forgetting VDI with location=%s uuid=%s" % (util.to_plain_string(vdi['location']), vdi['uuid']))
self.sr.forget_vdi(vdi['uuid'])
def attach(self, sr_uuid):
"""Std. attach"""
# Very-Legacy mode means the ISOs are in the local fs - so no need to attach.
if 'legacy_mode' in self.dconf:
# Verify path exists
if not os.path.exists(self.mountpoint):
raise xs_errors.XenError('ISOLocalPath')
return
# Check whether we're already mounted
if self._checkmount():
return
# Create the mountpoint if it's not already there
if not util.isdir(self.mountpoint):
util.makedirs(self.mountpoint)
mountcmd = []
location = util.to_plain_string(self.dconf['location'])
# TODO: Have XC standardise iso type string
protocol = 'nfs_iso'
options = ''
if 'type' in self.dconf:
protocol = self.dconf['type']
elif ":/" not in location:
protocol = 'cifs'
if 'options' in self.dconf:
options = self.dconf['options'].split(' ')
if protocol == 'cifs':
options = filter(lambda x: x != "", options)
else:
options = self.getNFSOptions(options)
# SMB options are passed differently for create via
# XC/xe sr-create and create via xe-mount-iso-sr
# In both cases check if SMB version is passed are not.
# If not use self.smbversion.
if protocol == 'cifs':
if 'type' in self.dconf:
# Create via XC or sr-create
# Check for username and password
mountcmd = ["mount.cifs", location, self.mountpoint]
if 'vers' in self.dconf:
self.is_smbversion_specified = True
self.smbversion = self.dconf['vers']
util.SMlog("self.dconf['vers'] = %s" % self.dconf['vers'])
self.appendCIFSMountOptions(mountcmd)
else:
# Creation via xe-mount-iso-sr
try:
mountcmd = ["mount", location, self.mountpoint]
if options and options[0] == '-o':
pos = options[1].find('vers=')
if pos == -1:
options[1] += ',' + self.getSMBVersion()
else:
self.smbversion = self.getSMBVersionFromOptions(
options[1])
self.is_smbversion_specified = True
else:
raise ValueError
mountcmd.extend(options)
except ValueError:
raise xs_errors.XenError('ISOInvalidXeMountOptions')
# Check the validity of 'smbversion'.
# Raise an exception for any invalid version.
if self.smbversion not in [SMB_VERSION_1, SMB_VERSION_3]:
raise xs_errors.XenError('ISOInvalidSMBversion')
# Attempt mounting
try:
if protocol == 'nfs_iso':
# For NFS, do a soft mount with tcp as protocol. Since ISO SR is
# going to be r-only, a failure in nfs link can be reported back
# to the process waiting.
serv_path = location.split(':')
util._testHost(serv_path[0], NFSPORT, 'NFSTarget')
nfs.soft_mount(self.mountpoint,
serv_path[0],
serv_path[1],
'tcp',
useroptions=options,
nfsversion=self.nfsversion)
else:
smb3_fail_reason = None
if self.smbversion in SMB_VERSION_3:
util.SMlog('ISOSR mount over smb 3.0')
try:
self.mountOverSMB(mountcmd)
except util.CommandException as inst:
if not self.is_smbversion_specified:
util.SMlog('Retrying ISOSR mount over smb 1.0')
smb3_fail_reason = inst.reason
# mountcmd is constructed such that the last two
# items will contain -o argument and its value.
del mountcmd[-2:]
self.smbversion = SMB_VERSION_1
if not options:
self.appendCIFSMountOptions(mountcmd)
else:
if options[0] == '-o':
# regex can be used here since we have
# already validated version entry
options[1] = re.sub(
'vers=3.0', 'vers=1.0', options[1])
mountcmd.extend(options)
self.mountOverSMB(mountcmd)
else:
raise xs_errors.XenError('ISOMountFailure',
opterr=inst.reason)
else:
util.SMlog('ISOSR mount over smb 1.0')
self.mountOverSMB(mountcmd)
except util.CommandException as inst:
if not self.is_smbversion_specified:
raise xs_errors.XenError('ISOMountFailure',
opterr=smb3_fail_reason)
else:
raise xs_errors.XenError('ISOMountFailure', opterr=inst.reason)
# Check the iso_path is accessible
if not self._checkmount():
self.detach(sr_uuid)
raise xs_errors.XenError('ISOSharenameFailure')
