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##############################################################################
#
# Zope Public License (ZPL) Version 1.0
# -------------------------------------
#
# Copyright (c) Digital Creations. All rights reserved.
#
# This license has been certified as Open Source(tm).
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# 1. Redistributions in source code must retain the above copyright
# notice, this list of conditions, and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions, and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# 3. Digital Creations requests that attribution be given to Zope
# in any manner possible. Zope includes a "Powered by Zope"
# button that is installed by default. While it is not a license
# violation to remove this button, it is requested that the
# attribution remain. A significant investment has been put
# into Zope, and this effort will continue if the Zope community
# continues to grow. This is one way to assure that growth.
#
# 4. All advertising materials and documentation mentioning
# features derived from or use of this software must display
# the following acknowledgement:
#
# "This product includes software developed by Digital Creations
# for use in the Z Object Publishing Environment
# (http://www.zope.org/)."
#
# In the event that the product being advertised includes an
# intact Zope distribution (with copyright and license included)
# then this clause is waived.
#
# 5. Names associated with Zope or Digital Creations must not be used to
# endorse or promote products derived from this software without
# prior written permission from Digital Creations.
#
# 6. Modified redistributions of any form whatsoever must retain
# the following acknowledgment:
#
# "This product includes software developed by Digital Creations
# for use in the Z Object Publishing Environment
# (http://www.zope.org/)."
#
# Intact (re-)distributions of any official Zope release do not
# require an external acknowledgement.
#
# 7. Modifications are encouraged but must be packaged separately as
# patches to official Zope releases. Distributions that do not
# clearly separate the patches from the original work must be clearly
# labeled as unofficial distributions. Modifications which do not
# carry the name Zope may be packaged in any form, as long as they
# conform to all of the clauses above.
#
#
# Disclaimer
#
# THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
# EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
#
# This software consists of contributions made by Digital Creations and
# many individuals on behalf of Digital Creations. Specific
# attributions are listed in the accompanying credits file.
#
##############################################################################
"""Commonly used functions for WebDAV support modules."""
__version__='$Revision: 1.2 $'[11:-2]
import string, time, urllib, re
from App_Common import iso8601_date, rfc850_date, rfc1123_date
from App_Common import aq_base
def absattr(attr):
if callable(attr):
return attr()
return attr
def urlfix(url, s):
n=len(s)
if url[-n:]==s: url=url[:-n]
if len(url) > 1 and url[-1]=='/':
url=url[:-1]
return url
def is_acquired(ob):
# Return true if this object is not a direct
# subobject of its aq_parent object.
if not hasattr(ob, 'aq_parent'):
return 0
if hasattr(aq_base(ob.aq_parent), absattr(ob.id)):
return 0
if hasattr(aq_base(ob), 'isTopLevelPrincipiaApplicationObject') and \
ob.isTopLevelPrincipiaApplicationObject:
return 0
return 1
def urlbase(url, ftype=urllib.splittype, fhost=urllib.splithost):
# Return a '/' based url such as '/foo/bar', removing
# type, host and port information if necessary.
if url[0]=='/': return url
type, uri=ftype(url)
host, uri=fhost(uri)
return uri or '/'
def generateLockToken():
# Generate a lock token
# XXX This is simple right now, just lifted from the original shortcut
# in Resource.dav__genlocktoken, but should be replaced by something
# better.
return 'AA9F6414-1D77-11D3-B825-00105A989226:%.03f' % time.time()
def tokenFinder(token):
# takes a string like '<opaquelocktoken:afsdfadfadf> and returns the token
# part.
if not token: return None # An empty string was passed in
if token[0] == '[': return None # An Etag was passed in
if token[0] == '<': token = token[1:-1]
return token[string.find(token,':')+1:]
### If: header handling support. IfParser returns a sequence of
### TagList objects in the order they were parsed which can then
### be used in WebDAV methods to decide whether an operation can
### proceed or to raise HTTP Error 412 (Precondition failed)
IfHdr = re.compile(
r"(?P<resource><.+?>)?\s*\((?P<listitem>[^)]+)\)"
)
ListItem = re.compile(
r"(?P<not>not)?\s*(?P<listitem><[a-zA-Z]+:[^>]*>|\[.*?\])",
re.I)
class TagList:
def __init__(self):
self.resource = None
self.list = []
self.NOTTED = 0
def IfParser(hdr):
out = []
i = 0
while 1:
m = IfHdr.search(hdr[i:])
if not m: break
i = i + m.end()
tag = TagList()
tag.resource = m.group('resource')
if tag.resource: # We need to delete < >
tag.resource = tag.resource[1:-1]
listitem = m.group('listitem')
tag.NOTTED, tag.list = ListParser(listitem)
out.append(tag)
return out
def ListParser(listitem):
out = []
NOTTED = 0
i = 0
while 1:
m = ListItem.search(listitem[i:])
if not m: break
i = i + m.end()
out.append(m.group('listitem'))
if m.group('not'): NOTTED = 1
return NOTTED, out
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