def LOCK(self, REQUEST, RESPONSE):
"""Lock a resource"""
from webdav.davcmds import Lock
self.dav__init(REQUEST, RESPONSE)
security = getSecurityManager()
creator = security.getUser()
body = REQUEST.get('BODY', '')
ifhdr = REQUEST.get_header('If', None)
depth = REQUEST.get_header('Depth', 'infinity')
alreadylocked = wl_isLocked(self)
if body and alreadylocked:
# This is a full LOCK request, and the Resource is
# already locked, so we need to raise the alreadylocked
# exception.
RESPONSE.setStatus(423)
elif body:
# This is a normal lock request with an XML payload
cmd = Lock(REQUEST)
token, result = cmd.apply(self, creator, depth=depth)
if result:
# Return the multistatus result (there were multiple
# errors. Note that davcmds.Lock.apply aborted the
# transaction already.
RESPONSE.setStatus(207)
RESPONSE.setHeader('Content-Type', 'text/xml; charset="utf-8"')
RESPONSE.setBody(result)
else:
# Success
lock = self.wl_getLock(token)
RESPONSE.setStatus(200)
RESPONSE.setHeader('Content-Type', 'text/xml; charset="utf-8"')
RESPONSE.setHeader('Lock-Token', 'opaquelocktoken:' + token)
RESPONSE.setBody(lock.asXML())
else:
# There's no body, so this likely to be a refresh request
if not ifhdr:
raise PreconditionFailed('If Header Missing')
taglist = IfParser(ifhdr)
found = 0
for tag in taglist:
for listitem in tag.list:
token = tokenFinder(listitem)
if token and self.wl_hasLock(token):
lock = self.wl_getLock(token)
timeout = REQUEST.get_header('Timeout', 'Infinite')
lock.setTimeout(timeout) # automatically refreshes
found = 1
RESPONSE.setStatus(200)
RESPONSE.setHeader('Content-Type',
'text/xml; charset="utf-8"')
RESPONSE.setBody(lock.asXML())
break
if found:
break
if not found:
RESPONSE.setStatus(412) # Precondition failed
return RESPONSE
def LOCK(self, REQUEST, RESPONSE):
""" LOCK on a Null Resource makes a LockNullResource instance """
self.dav__init(REQUEST, RESPONSE)
security = getSecurityManager()
creator = security.getUser()
body = REQUEST.get('BODY', '')
ifhdr = REQUEST.get_header('If', '')
depth = REQUEST.get_header('Depth', 'infinity')
name = self.__name__
parent = self.__parent__
if isinstance(parent, NullResource):
# Can happen if someone specified a bad path to
# the object. Missing path elements may be created
# as NullResources. Give up in this case.
raise BadRequest('Parent %s does not exist' % parent.__name__)
if IWriteLock.providedBy(parent) and parent.wl_isLocked():
if ifhdr:
parent.dav__simpleifhandler(REQUEST, RESPONSE, col=1)
else:
raise Locked
if not body:
# No body means refresh lock, which makes no sense on
# a null resource. But if the parent is locked it can be
# interpreted as an indirect refresh lock for the parent.
return parent.LOCK(REQUEST, RESPONSE)
elif ifhdr:
# There was an If header, but the parent is not locked.
raise PreconditionFailed
# The logic involved in locking a null resource is simpler than
# a regular resource, since we know we're not already locked,
# and the lock isn't being refreshed.
if not body:
raise BadRequest('No body was in the request')
locknull = LockNullResource(name)
parent._setObject(name, locknull)
locknull = parent._getOb(name)
cmd = Lock(REQUEST)
token, result = cmd.apply(locknull, creator, depth=depth)
if result:
# Return the multistatus result (there were multiple errors)
# This *shouldn't* happen for locking a NullResource, but it's
# inexpensive to handle and is good coverage for any future
# changes in davcmds.Lock
RESPONSE.setStatus(207)
RESPONSE.setHeader('Content-Type', 'text/xml; charset="utf-8"')
RESPONSE.setBody(result)
else:
# The command was succesful
lock = locknull.wl_getLock(token)
RESPONSE.setStatus(201)
RESPONSE.setHeader('Content-Type', 'text/xml; charset="utf-8"')
RESPONSE.setHeader('Lock-Token', 'opaquelocktoken:' + token)
RESPONSE.setBody(lock.asXML())