def handle_request_range(self, file):
# check if we have a range in the request
ranges = None
header_range = self.request.getHeader('Range', None)
if_range = self.request.getHeader('If-Range', None)
if header_range is not None:
ranges = parseRange(header_range)
if if_range is not None:
# We delete the ranges, which causes us to skip to the 200
# response.
return {}
# XXX: multipart ranges not implemented
if ranges and len(ranges) == 1:
try:
length = file.getSize()
[(start, end)] = expandRanges(ranges, length)
size = end - start
self.request.response.setHeader('Content-Length', size)
self.request.response.setHeader(
'Content-Range',
'bytes {0}-{1}/{2}'.format(start, end - 1, length))
self.request.response.setStatus(206) # Partial content
return dict(start=start, end=end)
except ValueError:
return {}
return {}
def index_html(self, REQUEST, RESPONSE=None):
"""Default view for VirtualBinary file"""
ranges = None
if RESPONSE is None:
RESPONSE = REQUEST.RESPONSE
if self.__content_class__ is None:
# Build your own headers
RESPONSE.setHeader('Content-Type', self.content_type)
RESPONSE.setHeader('Content-Length', self.size)
else:
# Call index_html method of content class with a fake
# self.data attribute which will return empty value
# Use this artifice to make sure content class is not loading
# all data in memory since it is better to return a stream iterator
# There is an exception with multiple range
if REQUEST.environ.has_key('HTTP_RANGE'):
ranges = parseRange(REQUEST.environ.get('HTTP_RANGE'))
## in case of mutiple range we don't know do with an iterator
if ranges is not None and len(ranges) > 1:
## call normally OFS.image with data
return self.__content_class__.index_html(
self, REQUEST, RESPONSE)
else:
### now we deal correctly with 304 header
if self._if_modified_since_request_handler(REQUEST, RESPONSE):
self.ZCacheable_set(None)
return ''
### set correctly header
RESPONSE.setHeader('Last-Modified',
rfc1123_date(self._p_mtime))
RESPONSE.setHeader('Content-Type', self.content_type)
RESPONSE.setHeader('Content-Length', self.size)
RESPONSE.setHeader('Accept-Ranges', 'bytes')
self.ZCacheable_set(None)
# This is a default header that can be bypassed by other products
# such as attachment field.
if RESPONSE.getHeader('content-disposition') is None:
# headers are in lower case in HTTPResponse
RESPONSE.setHeader('Content-Disposition',
'inline; filename="%s"' % self.filename)
if ranges and len(ranges) == 1:
## is an range request with one range ,
## return an iterator with this range
[(start, end)] = ranges
if end is None:
end = self.size
iterator = range_filestream_iterator(self.path,
start,
end,
mode='rb')
return iterator
else:
return filestream_iterator(self.path, mode='rb')
def index_html(self, REQUEST, RESPONSE=None):
"""Default view for VirtualBinary file"""
ranges = None
if RESPONSE is None:
RESPONSE = REQUEST.RESPONSE
if self.__content_class__ is None:
# Build your own headers
RESPONSE.setHeader('Content-Type', self.content_type)
RESPONSE.setHeader('Content-Length', self.size)
else:
# Call index_html method of content class with a fake
# self.data attribute which will return empty value
# Use this artifice to make sure content class is not loading
# all data in memory since it is better to return a stream iterator
# There is an exception with multiple range
if REQUEST.environ.has_key('HTTP_RANGE'):
ranges = parseRange(REQUEST.environ.get('HTTP_RANGE'))
## in case of mutiple range we don't know do with an iterator
if ranges is not None and len(ranges) > 1:
## call normally OFS.image with data
return self.__content_class__.index_html(self, REQUEST, RESPONSE)
else:
### now we deal correctly with 304 header
if self._if_modified_since_request_handler(REQUEST, RESPONSE):
self.ZCacheable_set(None)
return ''
### set correctly header
RESPONSE.setHeader('Last-Modified', rfc1123_date(self._p_mtime))
RESPONSE.setHeader('Content-Type', self.content_type)
RESPONSE.setHeader('Content-Length', self.size)
RESPONSE.setHeader('Accept-Ranges', 'bytes')
self.ZCacheable_set(None)
# This is a default header that can be bypassed by other products
# such as attachment field.
if RESPONSE.getHeader('content-disposition') is None:
# headers are in lower case in HTTPResponse
RESPONSE.setHeader(
'Content-Disposition',
'inline; filename="%s"' % self.filename
)
if ranges and len(ranges) == 1:
## is an range request with one range ,
## return an iterator with this range
[(start,end)] = ranges
if end is None:
end = self.size
iterator = range_filestream_iterator(self.path, start, end, mode='rb')
return iterator
else:
return filestream_iterator(self.path, mode='rb')
def handleRequestRange(instance, length, REQUEST, RESPONSE):
# check if we have a range in the request
ranges = None
range = REQUEST.get_header('Range', None)
request_range = REQUEST.get_header('Request-Range', None)
if request_range is not None:
# Netscape 2 through 4 and MSIE 3 implement a draft version
# Later on, we need to serve a different mime-type as well.
range = request_range
if_range = REQUEST.get_header('If-Range', None)
if range is not None:
ranges = parseRange(range)
if if_range is not None:
# Only send ranges if the data isn't modified, otherwise send
# the whole object. Support both ETags and Last-Modified dates!
if len(if_range) > 1 and if_range[:2] == 'ts':
# ETag:
if if_range != instance.http__etag():
# Modified, so send a normal response. We delete
# the ranges, which causes us to skip to the 200
# response.
ranges = None
else:
# Date
date = if_range.split(';')[0]
try:
mod_since = long(DateTime(date).timeTime())
except Exception:
mod_since = None
if mod_since is not None:
if instance._p_mtime:
last_mod = long(instance._p_mtime)
else:
last_mod = long(0)
if last_mod > mod_since:
# Modified, so send a normal response. We delete
# the ranges, which causes us to skip to the 200
# response.
ranges = None
RESPONSE.setHeader('Accept-Ranges', 'bytes')
if ranges and len(ranges) == 1:
try:
[(start, end)] = expandRanges(ranges, length)
size = end - start
RESPONSE.setHeader('Content-Length', size)
RESPONSE.setHeader(
'Content-Range',
'bytes {0}-{1}/{2}'.format(start, end - 1, length))
RESPONSE.setStatus(206) # Partial content
return dict(start=start, end=end)
except ValueError:
return {}
return {}
def handleRequestRange(instance, length, REQUEST, RESPONSE):
# check if we have a range in the request
ranges = None
range = REQUEST.get_header('Range', None)
request_range = REQUEST.get_header('Request-Range', None)
if request_range is not None:
# Netscape 2 through 4 and MSIE 3 implement a draft version
# Later on, we need to serve a different mime-type as well.
range = request_range
if_range = REQUEST.get_header('If-Range', None)
if range is not None:
ranges = parseRange(range)
if if_range is not None:
# Only send ranges if the data isn't modified, otherwise send
# the whole object. Support both ETags and Last-Modified dates!
if len(if_range) > 1 and if_range[:2] == 'ts':
# ETag:
if if_range != instance.http__etag():
# Modified, so send a normal response. We delete
# the ranges, which causes us to skip to the 200
# response.
ranges = None
else:
# Date
date = if_range.split(';')[0]
try:
mod_since = long(DateTime(date).timeTime())
except Exception:
mod_since = None
if mod_since is not None:
if instance._p_mtime:
last_mod = long(instance._p_mtime)
else:
last_mod = 0
if last_mod > mod_since:
# Modified, so send a normal response. We delete
# the ranges, which causes us to skip to the 200
# response.
ranges = None
RESPONSE.setHeader('Accept-Ranges', 'bytes')
if ranges and len(ranges) == 1:
try:
[(start, end)] = expandRanges(ranges, length)
size = end - start
RESPONSE.setHeader('Content-Length', size)
RESPONSE.setHeader(
'Content-Range',
'bytes {0}-{1}/{2}'.format(start, end - 1, length))
RESPONSE.setStatus(206) # Partial content
return dict(start=start, end=end)
except ValueError:
return {}
return {}
def have_ranges(self):
"""Return range information if partial content was requested.
"""
range_header = self.request.environ.get('HTTP_RANGE', None)
if range_header is not None:
range_if_header = self.request.environ.get('HTTP_IF_RANGE', None)
if range_if_header:
# If there is an If-Range header, with a date
# prior to the modification, return all the file.
if_date = parse_datetime(range_if_header)
if (if_date and self._modification_datetime
and self._modification_datetime > if_date):
return (None, None, None)
ranges = parseRange(range_header)
if len(ranges) == 1:
size = self.context.get_file_size()
satisfiable = expandRanges(ranges, size)
if len(satisfiable) == 1:
return (satisfiable[0][0], satisfiable[0][1] - 1, size)
return (None, None, size)
return (None, None, None)
def have_ranges(self):
"""Return range information if partial content was requested.
"""
range_header = self.request.environ.get('HTTP_RANGE', None)
if range_header is not None:
range_if_header = self.request.environ.get('HTTP_IF_RANGE', None)
if range_if_header:
# If there is an If-Range header, with a date
# prior to the modification, return all the file.
if_date = parse_datetime(range_if_header)
if (if_date and self._modification_datetime and
self._modification_datetime > if_date):
return (None, None, None)
ranges = parseRange(range_header)
if len(ranges) == 1:
size = self.context.get_file_size()
satisfiable = expandRanges(ranges, size)
if len(satisfiable) == 1:
return (satisfiable[0][0], satisfiable[0][1] - 1, size)
return (None, None, size)
return (None, None, None)
def expectSets(self, header, sets):
result = parseRange(header)
self.assertTrue(
result == sets,
'Expected %r, got %r' % (sets, result))
def expectNone(self, header):
result = parseRange(header)
self.assertTrue(result is None, 'Expected None, got %r' % result)
def expectSets(self, header, sets):
result = parseRange(header)
self.assertTrue(result == sets,
'Expected %s, got %s' % ( ` sets `, ` result `))
def expectNone(self, header):
result = parseRange(header)
self.assertTrue(result is None, 'Expected None, got %s' % ` result `)
def expectSets(self, header, sets):
result = parseRange(header)
self.failUnless(result == sets,
'Expected %s, got %s' % (`sets`, `result`))
def expectNone(self, header):
result = parseRange(header)
self.failUnless(result is None, 'Expected None, got %s' % `result`)
def expectSets(self, header, sets):
result = parseRange(header)
self.assertTrue(result == sets,
'Expected %s, got %s' % (`sets`, `result`))
def expectSets(self, header, sets):
result = parseRange(header)
self.assertTrue(result == sets, 'Expected %r, got %r' % (sets, result))
def expectSets(self, header, sets):
result = parseRange(header)
self.assertTrue(result == sets, f'Expected {sets!r}, got {result!r}')
