def renderHTTP(self, request):
"""
Authenticate the request then return the result of calling renderHTTP
on C{self.wrappedResource}
"""
if request.method not in self.allowedMethods():
response = http.Response(responsecode.NOT_ALLOWED)
response.headers.setHeader("allow", self.allowedMethods())
return response
def _renderResource(resource):
return resource.renderHTTP(request)
def _finished_reading(ignore, result):
data = ''.join(result)
request.attachment = data
d = self.authenticate(request)
d.addCallback(_renderResource)
return d
if request.method in ('PUT', 'DELETE'):
# we need to authenticate the request after all the attachment stream
# has been read
# QQQ DELETE doesn't have any attachments, does it? nor does GET.
# QQQ Reading attachment when there isn't one won't hurt, will it?
# QQQ So why don't we just do it all the time for all requests?
data = []
d = stream.readStream(request.stream, data.append)
d.addCallback(_finished_reading, data)
return d
else:
d = self.authenticate(request)
d.addCallback(_renderResource)
return d
def renderHTTP(self, request):
application = getApplicationForURI(request.xcap_uri)
if not application:
return http.Response(responsecode.NOT_FOUND,
stream="Application not supported")
resource = self.resourceForURI(request.xcap_uri)
return resource.renderHTTP(request)
def render(self, request):
title = "Directory listing for %s" % urllib.unquote(request.path)
s = """<html><head><title>%s</title><style>
th, .even td, .odd td { padding-right: 0.5em; font-family: monospace}
.even-dir { background-color: #efe0ef }
.even { background-color: #eee }
.odd-dir {background-color: #f0d0ef }
.odd { background-color: #dedede }
.icon { text-align: center }
.listing {
margin-left: auto;
margin-right: auto;
width: 50%%;
padding: 0.1em;
}
body { border: 0; padding: 0; margin: 0; background-color: #efefef;}
h1 {padding: 0.1em; background-color: #777; color: white; border-bottom: thin white dashed;}
</style></head><body><div class="directory-listing"><h1>%s</h1>""" % (title,
title)
s += "<table>"
s += "<tr><th>Filename</th><th>Size</th><th>Last Modified</th><th>File Type</th></tr>"
even = False
for row in self.data_listing(request, None):
s += '<tr class="%s">' % (even and 'even' or 'odd', )
s += '<td><a href="%(link)s">%(linktext)s</a></td><td align="right">%(size)s</td><td>%(lastmod)s</td><td>%(type)s</td></tr>' % row
even = not even
s += "</table></div></body></html>"
response = http.Response(200, {}, s)
response.headers.setHeader("content-type",
http_headers.MimeType('text', 'html'))
return response
def makeUnsatisfiable(request, oldresponse):
if request.headers.hasHeader('if-range'):
return oldresponse # Return resource instead of error
response = http.Response(responsecode.REQUESTED_RANGE_NOT_SATISFIABLE)
response.headers.setHeader(
"content-range", ('bytes', None, None, oldresponse.stream.length))
return response
def renderHTTP(self, request):
"""
See L{iweb.IResource.renderHTTP}.
This implementation will dispatch the given C{request} to another method
of C{self} named C{http_}METHOD, where METHOD is the HTTP method used by
C{request} (eg. C{http_GET}, C{http_POST}, etc.).
Generally, a subclass should implement those methods instead of
overriding this one.
C{http_*} methods are expected provide the same interface and return the
same results as L{iweb.IResource}C{.renderHTTP} (and therefore this method).
C{etag} and C{last-modified} are added to the response returned by the
C{http_*} header, if known.
If an appropriate C{http_*} method is not found, a
L{responsecode.NOT_ALLOWED}-status response is returned, with an
appropriate C{allow} header.
@param request: the request to process.
@return: an object adaptable to L{iweb.IResponse}.
"""
method = getattr(self, "http_" + request.method, None)
if not method:
response = http.Response(responsecode.NOT_ALLOWED)
response.headers.setHeader("allow", self.allowedMethods())
return response
d = self.checkPreconditions(request)
if d is None:
return method(request)
else:
return d.addCallback(lambda _: method(request))
def __init__(self, request):
from xcap.web import http
components.Componentized.__init__(self)
self.request = request
self.response = http.Response(stream=stream.ProducerStream())
# This deferred will be fired by the first call to write on OldRequestAdapter
# and will cause the headers to be output.
self.deferredResponse = defer.Deferred()
def http_OPTIONS(self, request):
"""
Respond to a OPTIONS request.
@param request: the request to process.
@return: an object adaptable to L{iweb.IResponse}.
"""
response = http.Response(responsecode.OK)
response.headers.setHeader("allow", self.allowedMethods())
return response
def renderHTTP_exception(self, req, reason):
log.msg("Exception rendering:", isErr=1)
log.err(reason)
body = (
"<html><head><title>Internal Server Error</title></head>"
"<body><h1>Internal Server Error</h1>An error occurred rendering the requested page. More information is available in the server log.</body></html>"
)
return http.Response(
responsecode.INTERNAL_SERVER_ERROR,
{'content-type': http_headers.MimeType('text', 'html')}, body)
def preprocessRequest(self):
"""Do any request processing that doesn't follow the normal
resource lookup procedure. "OPTIONS *" is handled here, for
example. This would also be the place to do any CONNECT
processing."""
if self.method == "OPTIONS" and self.uri == "*":
response = http.Response(responsecode.OK)
response.headers.setHeader('allow',
('GET', 'HEAD', 'OPTIONS', 'TRACE'))
return response
# This is where CONNECT would go if we wanted it
return None
def _processingReallyFailed(self, reason, origReason):
log.msg("Exception rendering error page:", isErr=1)
log.err(reason)
log.msg("Original exception:", isErr=1)
log.err(origReason)
body = (
"<html><head><title>Internal Server Error</title></head>"
"<body><h1>Internal Server Error</h1>An error occurred rendering the requested page. Additionally, an error occured rendering the error page.</body></html>"
)
response = http.Response(
responsecode.INTERNAL_SERVER_ERROR,
{'content-type': http_headers.MimeType('text', 'html')}, body)
self.writeResponse(response)
def doTrace(request):
request = iweb.IRequest(request)
txt = "%s %s HTTP/%d.%d\r\n" % (request.method, request.uri,
request.clientproto[0],
request.clientproto[1])
l = []
for name, valuelist in request.headers.getAllRawHeaders():
for value in valuelist:
l.append("%s: %s\r\n" % (name, value))
txt += ''.join(l)
return http.Response(
responsecode.OK,
{'content-type': http_headers.MimeType('message', 'http')}, txt)
class File(StaticRenderMixin):
"""
File is a resource that represents a plain non-interpreted file
(although it can look for an extension like .rpy or .cgi and hand the
file to a processor for interpretation if you wish). Its constructor
takes a file path.
Alternatively, you can give a directory path to the constructor. In this
case the resource will represent that directory, and its children will
be files underneath that directory. This provides access to an entire
filesystem tree with a single Resource.
If you map the URL 'http://server/FILE' to a resource created as
File('/tmp'), then http://server/FILE/ will return an HTML-formatted
listing of the /tmp/ directory, and http://server/FILE/foo/bar.html will
return the contents of /tmp/foo/bar.html .
"""
implements(iweb.IResource)
def _getContentTypes(self):
if not hasattr(File, "_sharedContentTypes"):
File._sharedContentTypes = loadMimeTypes()
return File._sharedContentTypes
contentTypes = property(_getContentTypes)
contentEncodings = {".gz": "gzip", ".bz2": "bzip2"}
processors = {}
indexNames = ["index", "index.html", "index.htm", "index.trp", "index.rpy"]
type = None
def __init__(self,
path,
defaultType="text/plain",
ignoredExts=(),
processors=None,
indexNames=None):
"""Create a file with the given path.
"""
super(File, self).__init__()
self.putChildren = {}
self.fp = filepath.FilePath(path)
# Remove the dots from the path to split
self.defaultType = defaultType
self.ignoredExts = list(ignoredExts)
if processors is not None:
self.processors = dict([(key.lower(), value)
for key, value in processors.items()])
if indexNames is not None:
self.indexNames = indexNames
def exists(self):
return self.fp.exists()
def etag(self):
if not self.fp.exists(): return None
st = self.fp.statinfo
#
# Mark ETag as weak if it was modified more recently than we can
# measure and report, as it could be modified again in that span
# and we then wouldn't know to provide a new ETag.
#
weak = (time.time() - st.st_mtime <= 1)
return http_headers.ETag("%X-%X-%X" %
(st.st_ino, st.st_size, st.st_mtime),
weak=weak)
def lastModified(self):
if self.fp.exists():
return self.fp.getmtime()
else:
return None
def creationDate(self):
if self.fp.exists():
return self.fp.getmtime()
else:
return None
def contentLength(self):
if self.fp.exists():
if self.fp.isfile():
return self.fp.getsize()
else:
# Computing this would require rendering the resource; let's
# punt instead.
return None
else:
return None
def _initTypeAndEncoding(self):
self._type, self._encoding = getTypeAndEncoding(
self.fp.basename(), self.contentTypes, self.contentEncodings,
self.defaultType)
# Handle cases not covered by getTypeAndEncoding()
if self.fp.isdir(): self._type = "httpd/unix-directory"
def contentType(self):
if not hasattr(self, "_type"):
self._initTypeAndEncoding()
return http_headers.MimeType.fromString(self._type)
def contentEncoding(self):
if not hasattr(self, "_encoding"):
self._initTypeAndEncoding()
return self._encoding
def displayName(self):
if self.fp.exists():
return self.fp.basename()
else:
return None
def ignoreExt(self, ext):
"""Ignore the given extension.
Serve file.ext if file is requested
"""
self.ignoredExts.append(ext)
def directoryListing(self):
return dirlist.DirectoryLister(self.fp.path, self.listChildren(),
self.contentTypes,
self.contentEncodings, self.defaultType)
def putChild(self, name, child):
"""
Register a child with the given name with this resource.
@param name: the name of the child (a URI path segment)
@param child: the child to register
"""
self.putChildren[name] = child
def getChild(self, name):
"""
Look up a child resource.
@return: the child of this resource with the given name.
"""
if name == "":
return self
child = self.putChildren.get(name, None)
if child: return child
child_fp = self.fp.child(name)
if child_fp.exists():
return self.createSimilarFile(child_fp.path)
else:
return None
def listChildren(self):
"""
@return: a sequence of the names of all known children of this resource.
"""
children = self.putChildren.keys()
if self.fp.isdir():
children += [c for c in self.fp.listdir() if c not in children]
return children
def locateChild(self, req, segments):
"""
See L{IResource}C{.locateChild}.
"""
# If getChild() finds a child resource, return it
child = self.getChild(segments[0])
if child is not None: return (child, segments[1:])
# If we're not backed by a directory, we have no children.
# But check for existance first; we might be a collection resource
# that the request wants created.
self.fp.restat(False)
if self.fp.exists() and not self.fp.isdir(): return (None, ())
# OK, we need to return a child corresponding to the first segment
path = segments[0]
if path:
fpath = self.fp.child(path)
else:
# Request is for a directory (collection) resource
return (self, server.StopTraversal)
# Don't run processors on directories - if someone wants their own
# customized directory rendering, subclass File instead.
if fpath.isfile():
processor = self.processors.get(fpath.splitext()[1].lower())
if processor:
return (processor(fpath.path), segments[1:])
elif not fpath.exists():
sibling_fpath = fpath.siblingExtensionSearch(*self.ignoredExts)
if sibling_fpath is not None:
fpath = sibling_fpath
return self.createSimilarFile(fpath.path), segments[1:]
def renderHTTP(self, req):
self.fp.restat(False)
return super(File, self).renderHTTP(req)
def render(self, req):
"""You know what you doing."""
if not self.fp.exists():
return responsecode.NOT_FOUND
if self.fp.isdir():
if req.uri[-1] != "/":
# Redirect to include trailing '/' in URI
return http.RedirectResponse(
req.unparseURL(path=req.path + '/'))
else:
ifp = self.fp.childSearchPreauth(*self.indexNames)
if ifp:
# Render from the index file
standin = self.createSimilarFile(ifp.path)
else:
# Render from a DirectoryLister
standin = dirlist.DirectoryLister(self.fp.path,
self.listChildren(),
self.contentTypes,
self.contentEncodings,
self.defaultType)
return standin.render(req)
try:
f = self.fp.open()
except IOError, e:
import errno
if e[0] == errno.EACCES:
return responsecode.FORBIDDEN
elif e[0] == errno.ENOENT:
return responsecode.NOT_FOUND
else:
raise
response = http.Response()
response.stream = stream.FileStream(f, 0, self.fp.getsize())
for (header, value) in (
("content-type", self.contentType()),
("content-encoding", self.contentEncoding()),
):
if value is not None:
response.headers.setHeader(header, value)
return response
def render(self, req):
return http.Response(responsecode.OK,
http_headers.Headers(
{'content-type': self.contentType()}),
stream=self.data)
if fieldName in self.expectedFields:
for finfo in req.files[fieldName]:
try:
outname = self.writeFile(*finfo)
content.append("Saved file %s<br />" % outname)
except IOError, err:
content.append(str(err) + "<br />")
else:
content.append("%s is not a valid field" % fieldName)
else:
content.append("No files given")
content.append("</body></html>")
return http.Response(responsecode.OK, {}, stream='\n'.join(content))
# FIXME: hi there I am a broken class
# """I contain AsIsProcessor, which serves files 'As Is'
# Inspired by Apache's mod_asis
# """
#
# class ASISProcessor:
# implements(iweb.IResource)
#
# def __init__(self, path):
# self.path = path
#
# def renderHTTP(self, request):
# request.startedWriting = 1
def rangefilter(request, oldresponse):
if oldresponse.stream is None:
return oldresponse
size = oldresponse.stream.length
if size is None:
# Does not deal with indeterminate length outputs
return oldresponse
oldresponse.headers.setHeader('accept-ranges', ('bytes', ))
rangespec = request.headers.getHeader('range')
# If we've got a range header and the If-Range header check passes, and
# the range type is bytes, do a partial response.
if (rangespec is not None and http.checkIfRange(request, oldresponse)
and rangespec[0] == 'bytes'):
# If it's a single range, return a simple response
if len(rangespec[1]) == 1:
try:
start, end = canonicalizeRange(rangespec[1][0], size)
except UnsatisfiableRangeRequest:
return makeUnsatisfiable(request, oldresponse)
response = http.Response(responsecode.PARTIAL_CONTENT,
oldresponse.headers)
response.headers.setHeader('content-range',
('bytes', start, end, size))
content, after = makeSegment(oldresponse.stream, 0, start, end)
after.close()
response.stream = content
return response
else:
# Return a multipart/byteranges response
lastOffset = -1
offsetList = []
for arange in rangespec[1]:
try:
start, end = canonicalizeRange(arange, size)
except UnsatisfiableRangeRequest:
continue
if start <= lastOffset:
# Stupid client asking for out-of-order or overlapping ranges, PUNT!
return oldresponse
offsetList.append((start, end))
lastOffset = end
if not offsetList:
return makeUnsatisfiable(request, oldresponse)
content_type = oldresponse.headers.getRawHeaders('content-type')
boundary = "%x%x" % (int(time.time() * 1000000), os.getpid())
response = http.Response(responsecode.PARTIAL_CONTENT,
oldresponse.headers)
response.headers.setHeader(
'content-type',
http_headers.MimeType('multipart', 'byteranges',
[('boundary', boundary)]))
response.stream = out = stream.CompoundStream()
lastOffset = 0
origStream = oldresponse.stream
headerString = "\r\n--%s" % boundary
if len(content_type) == 1:
headerString += '\r\nContent-Type: %s' % content_type[0]
headerString += "\r\nContent-Range: %s\r\n\r\n"
for start, end in offsetList:
out.addStream(headerString % http_headers.generateContentRange(
('bytes', start, end, size)))
content, origStream = makeSegment(origStream, lastOffset,
start, end)
lastOffset = end + 1
out.addStream(content)
origStream.close()
out.addStream("\r\n--%s--\r\n" % boundary)
return response
else:
return oldresponse
def sendResponse(self, response):
if response.etag:
self.e_tag = ETag(response.etag)
response = http.Response(response.code, stream=response.data)
return self.setHeaders(response)
