mirror of
https://github.com/SickGear/SickGear.git
synced 2024-12-02 17:33:37 +00:00
169 lines
7.5 KiB
Python
169 lines
7.5 KiB
Python
# Copyright 2012 Google Inc.
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining a
|
|
# copy of this software and associated documentation files (the
|
|
# "Software"), to deal in the Software without restriction, including
|
|
# without limitation the rights to use, copy, modify, merge, publish, dis-
|
|
# tribute, sublicense, and/or sell copies of the Software, and to permit
|
|
# persons to whom the Software is furnished to do so, subject to the fol-
|
|
# lowing conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included
|
|
# in all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
|
|
# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
|
|
# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
|
|
# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
# IN THE SOFTWARE.
|
|
|
|
import types
|
|
from boto.gs.user import User
|
|
from boto.exception import InvalidCorsError
|
|
from xml.sax import handler
|
|
|
|
# Relevant tags for the CORS XML document.
|
|
CORS_CONFIG = 'CorsConfig'
|
|
CORS = 'Cors'
|
|
ORIGINS = 'Origins'
|
|
ORIGIN = 'Origin'
|
|
METHODS = 'Methods'
|
|
METHOD = 'Method'
|
|
HEADERS = 'ResponseHeaders'
|
|
HEADER = 'ResponseHeader'
|
|
MAXAGESEC = 'MaxAgeSec'
|
|
|
|
class Cors(handler.ContentHandler):
|
|
"""Encapsulates the CORS configuration XML document"""
|
|
def __init__(self):
|
|
# List of CORS elements found within a CorsConfig element.
|
|
self.cors = []
|
|
# List of collections (e.g. Methods, ResponseHeaders, Origins)
|
|
# found within a CORS element. We use a list of lists here
|
|
# instead of a dictionary because the collections need to be
|
|
# preserved in the order in which they appear in the input XML
|
|
# document (and Python dictionary keys are inherently unordered).
|
|
# The elements on this list are two element tuples of the form
|
|
# (collection name, [list of collection contents]).
|
|
self.collections = []
|
|
# Lists of elements within a collection. Again a list is needed to
|
|
# preserve ordering but also because the same element may appear
|
|
# multiple times within a collection.
|
|
self.elements = []
|
|
# Dictionary mapping supported collection names to element types
|
|
# which may be contained within each.
|
|
self.legal_collections = {
|
|
ORIGINS : [ORIGIN],
|
|
METHODS : [METHOD],
|
|
HEADERS : [HEADER],
|
|
MAXAGESEC: []
|
|
}
|
|
# List of supported element types within any collection, used for
|
|
# checking validadity of a parsed element name.
|
|
self.legal_elements = [ORIGIN, METHOD, HEADER]
|
|
|
|
self.parse_level = 0
|
|
self.collection = None
|
|
self.element = None
|
|
|
|
def validateParseLevel(self, tag, level):
|
|
"""Verify parse level for a given tag."""
|
|
if self.parse_level != level:
|
|
raise InvalidCorsError('Invalid tag %s at parse level %d: ' %
|
|
(tag, self.parse_level))
|
|
|
|
def startElement(self, name, attrs, connection):
|
|
"""SAX XML logic for parsing new element found."""
|
|
if name == CORS_CONFIG:
|
|
self.validateParseLevel(name, 0)
|
|
self.parse_level += 1;
|
|
elif name == CORS:
|
|
self.validateParseLevel(name, 1)
|
|
self.parse_level += 1;
|
|
elif name in self.legal_collections:
|
|
self.validateParseLevel(name, 2)
|
|
self.parse_level += 1;
|
|
self.collection = name
|
|
elif name in self.legal_elements:
|
|
self.validateParseLevel(name, 3)
|
|
# Make sure this tag is found inside a collection tag.
|
|
if self.collection is None:
|
|
raise InvalidCorsError('Tag %s found outside collection' % name)
|
|
# Make sure this tag is allowed for the current collection tag.
|
|
if name not in self.legal_collections[self.collection]:
|
|
raise InvalidCorsError('Tag %s not allowed in %s collection' %
|
|
(name, self.collection))
|
|
self.element = name
|
|
else:
|
|
raise InvalidCorsError('Unsupported tag ' + name)
|
|
|
|
def endElement(self, name, value, connection):
|
|
"""SAX XML logic for parsing new element found."""
|
|
if name == CORS_CONFIG:
|
|
self.validateParseLevel(name, 1)
|
|
self.parse_level -= 1;
|
|
elif name == CORS:
|
|
self.validateParseLevel(name, 2)
|
|
self.parse_level -= 1;
|
|
# Terminating a CORS element, save any collections we found
|
|
# and re-initialize collections list.
|
|
self.cors.append(self.collections)
|
|
self.collections = []
|
|
elif name in self.legal_collections:
|
|
self.validateParseLevel(name, 3)
|
|
if name != self.collection:
|
|
raise InvalidCorsError('Mismatched start and end tags (%s/%s)' %
|
|
(self.collection, name))
|
|
self.parse_level -= 1;
|
|
if not self.legal_collections[name]:
|
|
# If this collection doesn't contain any sub-elements, store
|
|
# a tuple of name and this tag's element value.
|
|
self.collections.append((name, value.strip()))
|
|
else:
|
|
# Otherwise, we're terminating a collection of sub-elements,
|
|
# so store a tuple of name and list of contained elements.
|
|
self.collections.append((name, self.elements))
|
|
self.elements = []
|
|
self.collection = None
|
|
elif name in self.legal_elements:
|
|
self.validateParseLevel(name, 3)
|
|
# Make sure this tag is found inside a collection tag.
|
|
if self.collection is None:
|
|
raise InvalidCorsError('Tag %s found outside collection' % name)
|
|
# Make sure this end tag is allowed for the current collection tag.
|
|
if name not in self.legal_collections[self.collection]:
|
|
raise InvalidCorsError('Tag %s not allowed in %s collection' %
|
|
(name, self.collection))
|
|
if name != self.element:
|
|
raise InvalidCorsError('Mismatched start and end tags (%s/%s)' %
|
|
(self.element, name))
|
|
# Terminating an element tag, add it to the list of elements
|
|
# for the current collection.
|
|
self.elements.append((name, value.strip()))
|
|
self.element = None
|
|
else:
|
|
raise InvalidCorsError('Unsupported end tag ' + name)
|
|
|
|
def to_xml(self):
|
|
"""Convert CORS object into XML string representation."""
|
|
s = '<' + CORS_CONFIG + '>'
|
|
for collections in self.cors:
|
|
s += '<' + CORS + '>'
|
|
for (collection, elements_or_value) in collections:
|
|
assert collection is not None
|
|
s += '<' + collection + '>'
|
|
# If collection elements has type string, append atomic value,
|
|
# otherwise, append sequence of values in named tags.
|
|
if isinstance(elements_or_value, str):
|
|
s += elements_or_value
|
|
else:
|
|
for (name, value) in elements_or_value:
|
|
assert name is not None
|
|
assert value is not None
|
|
s += '<' + name + '>' + value + '</' + name + '>'
|
|
s += '</' + collection + '>'
|
|
s += '</' + CORS + '>'
|
|
s += '</' + CORS_CONFIG + '>'
|
|
return s
|