def renderHTTP_exception(self, ctx, f):
try:
text, code = humanize_failure(f)
except:
log.msg("exception in humanize_failure")
log.msg("argument was %s" % (f,))
log.err()
text, code = str(f), None
if code is not None:
return self.simple(ctx, text, code)
if f.check(server.UnsupportedMethod):
# twisted.web.server.Request.render() has support for transforming
# this into an appropriate 501 NOT_IMPLEMENTED or 405 NOT_ALLOWED
# return code, but nevow does not.
req = IRequest(ctx)
method = req.method
return self.simple(ctx,
"I don't know how to treat a %s request." % method,
http.NOT_IMPLEMENTED)
req = IRequest(ctx)
accept = req.getHeader("accept")
if not accept:
accept = "*/*"
if "*/*" in accept or "text/*" in accept or "text/html" in accept:
super = appserver.DefaultExceptionHandler
return super.renderHTTP_exception(self, ctx, f)
# use plain text
traceback = f.getTraceback()
return self.simple(ctx, traceback, http.INTERNAL_SERVER_ERROR)
def renderHTTP_exception(self, ctx, f):
try:
text, code = humanize_failure(f)
except:
log.msg("exception in humanize_failure")
log.msg("argument was %s" % (f, ))
log.err()
text, code = str(f), None
if code is not None:
return self.simple(ctx, text, code)
if f.check(server.UnsupportedMethod):
# twisted.web.server.Request.render() has support for transforming
# this into an appropriate 501 NOT_IMPLEMENTED or 405 NOT_ALLOWED
# return code, but nevow does not.
req = IRequest(ctx)
method = req.method
return self.simple(
ctx, "I don't know how to treat a %s request." % method,
http.NOT_IMPLEMENTED)
req = IRequest(ctx)
accept = req.getHeader("accept")
if not accept:
accept = "*/*"
if "*/*" in accept or "text/*" in accept or "text/html" in accept:
super = appserver.DefaultExceptionHandler
return super.renderHTTP_exception(self, ctx, f)
# use plain text
traceback = f.getTraceback()
return self.simple(ctx, traceback, http.INTERNAL_SERVER_ERROR)
def render_PUT(self, ctx):
req = IRequest(ctx)
t = get_arg(req, "t", "").strip()
replace = parse_replace_arg(get_arg(req, "replace", "true"))
assert self.parentnode and self.name
if req.getHeader("content-range"):
raise WebError("Content-Range in PUT not yet supported", http.NOT_IMPLEMENTED)
if not t:
return self.replace_me_with_a_child(req, self.client, replace)
if t == "uri":
return self.replace_me_with_a_childcap(req, self.client, replace)
raise WebError("PUT to a file: bad t=%s" % t)
def child_giveup(self, ctx):
"""Handle reservation cancellation requests."""
srv = IService(ctx)
user = must_user(ctx).user
if ctx.arg('giveup'):
srv.giveupItem(user, self.item) # pylint: disable-msg=E1101
message(ctx, u"Votre modification est enregistrée.")
request = IRequest(ctx)
referer = request.getHeader('referer')
if referer:
return url.URL.fromString(referer)
return url.URL.fromContext(ctx).up()
def render_PUT(self, ctx):
req = IRequest(ctx)
t = get_arg(req, "t", "").strip()
replace = parse_replace_arg(get_arg(req, "replace", "true"))
assert self.parentnode and self.name
if req.getHeader("content-range"):
raise WebError("Content-Range in PUT not yet supported",
http.NOT_IMPLEMENTED)
if not t:
return self.replace_me_with_a_child(req, self.client, replace)
if t == "uri":
return self.replace_me_with_a_childcap(req, self.client, replace)
raise WebError("PUT to a file: bad t=%s" % t)
def locateChild(self, context, segments):
"""
Delegate dispatch to a sharing resource if the request is for a user
subdomain, otherwise fall back to the wrapped resource's C{locateChild}
implementation.
"""
request = IRequest(context)
hostname = request.getHeader('host')
info = self.subdomain(hostname)
if info is not None:
username, domain = info
index = UserIndexPage(IRealm(self.siteStore), self.webViewer)
resource = index.locateChild(None, [username])[0]
return resource, segments
return self.wrapped.locateChild(context, segments)
def locateChild(self, context, segments):
"""
Delegate dispatch to a sharing resource if the request is for a user
subdomain, otherwise fall back to the wrapped resource's C{locateChild}
implementation.
"""
request = IRequest(context)
hostname = request.getHeader('host')
info = self.subdomain(hostname)
if info is not None:
username, domain = info
index = UserIndexPage(IRealm(self.siteStore),
self.webViewer)
resource = index.locateChild(None, [username])[0]
return resource, segments
return self.wrapped.locateChild(context, segments)
def renderHTTP(self, ctx):
req = IRequest(ctx)
gte = static.getTypeAndEncoding
ctype, encoding = gte(self.filename,
static.File.contentTypes,
static.File.contentEncodings,
defaultType="text/plain")
req.setHeader("content-type", ctype)
if encoding:
req.setHeader("content-encoding", encoding)
if boolean_of_arg(get_arg(req, "save", "False")):
# tell the browser to save the file rather display it we don't
# try to encode the filename, instead we echo back the exact same
# bytes we were given in the URL. See the comment in
# FileNodeHandler.render_GET for the sad details.
req.setHeader("content-disposition",
'attachment; filename="%s"' % self.filename)
filesize = self.filenode.get_size()
assert isinstance(filesize, (int, long)), filesize
first, size = 0, None
contentsize = filesize
req.setHeader("accept-ranges", "bytes")
if not self.filenode.is_mutable():
# TODO: look more closely at Request.setETag and how it interacts
# with a conditional "if-etag-equals" request, I think this may
# need to occur after the setResponseCode below
si = self.filenode.get_storage_index()
if si:
req.setETag(base32.b2a(si))
# TODO: for mutable files, use the roothash. For LIT, hash the data.
# or maybe just use the URI for CHK and LIT.
rangeheader = req.getHeader('range')
if rangeheader:
ranges = self.parse_range_header(rangeheader)
# ranges = None means the header didn't parse, so ignore
# the header as if it didn't exist. If is more than one
# range, then just return the first for now, until we can
# generate multipart/byteranges.
if ranges is not None:
first, last = ranges[0]
if first >= filesize:
raise WebError('First beyond end of file',
http.REQUESTED_RANGE_NOT_SATISFIABLE)
else:
first = max(0, first)
last = min(filesize - 1, last)
req.setResponseCode(http.PARTIAL_CONTENT)
req.setHeader(
'content-range', "bytes %s-%s/%s" %
(str(first), str(last), str(filesize)))
contentsize = last - first + 1
size = contentsize
req.setHeader("content-length", str(contentsize))
if req.method == "HEAD":
return ""
# Twisted >=9.0 throws an error if we call req.finish() on a closed
# HTTP connection. It also has req.notifyFinish() to help avoid it.
finished = []
def _request_finished(ign):
finished.append(True)
if hasattr(req, "notifyFinish"):
req.notifyFinish().addBoth(_request_finished)
d = self.filenode.read(req, first, size)
def _finished(ign):
if not finished:
req.finish()
def _error(f):
lp = log.msg("error during GET",
facility="tahoe.webish",
failure=f,
level=log.UNUSUAL,
umid="xSiF3w")
if finished:
log.msg("but it's too late to tell them",
parent=lp,
level=log.UNUSUAL,
umid="j1xIbw")
return
req._tahoe_request_had_error = f # for HTTP-style logging
if req.startedWriting:
# The content-type is already set, and the response code has
# already been sent, so we can't provide a clean error
# indication. We can emit text (which a browser might
# interpret as something else), and if we sent a Size header,
# they might notice that we've truncated the data. Keep the
# error message small to improve the chances of having our
# error response be shorter than the intended results.
#
# We don't have a lot of options, unfortunately.
req.write("problem during download\n")
req.finish()
else:
# We haven't written anything yet, so we can provide a
# sensible error message.
eh = MyExceptionHandler()
eh.renderHTTP_exception(ctx, f)
d.addCallbacks(_finished, _error)
return req.deferred
def renderHTTP(self, ctx):
req = IRequest(ctx)
gte = static.getTypeAndEncoding
ctype, encoding = gte(self.filename,
static.File.contentTypes,
static.File.contentEncodings,
defaultType="text/plain")
req.setHeader("content-type", ctype)
if encoding:
req.setHeader("content-encoding", encoding)
if boolean_of_arg(get_arg(req, "save", "False")):
# tell the browser to save the file rather display it we don't
# try to encode the filename, instead we echo back the exact same
# bytes we were given in the URL. See the comment in
# FileNodeHandler.render_GET for the sad details.
req.setHeader("content-disposition",
'attachment; filename="%s"' % self.filename)
filesize = self.filenode.get_size()
assert isinstance(filesize, (int,long)), filesize
first, size = 0, None
contentsize = filesize
req.setHeader("accept-ranges", "bytes")
# TODO: for mutable files, use the roothash. For LIT, hash the data.
# or maybe just use the URI for CHK and LIT.
rangeheader = req.getHeader('range')
if rangeheader:
ranges = self.parse_range_header(rangeheader)
# ranges = None means the header didn't parse, so ignore
# the header as if it didn't exist. If is more than one
# range, then just return the first for now, until we can
# generate multipart/byteranges.
if ranges is not None:
first, last = ranges[0]
if first >= filesize:
raise WebError('First beyond end of file',
http.REQUESTED_RANGE_NOT_SATISFIABLE)
else:
first = max(0, first)
last = min(filesize-1, last)
req.setResponseCode(http.PARTIAL_CONTENT)
req.setHeader('content-range',"bytes %s-%s/%s" %
(str(first), str(last),
str(filesize)))
contentsize = last - first + 1
size = contentsize
req.setHeader("content-length", b"%d" % contentsize)
if req.method == "HEAD":
return ""
finished = []
def _request_finished(ign):
finished.append(True)
req.notifyFinish().addBoth(_request_finished)
d = self.filenode.read(req, first, size)
def _finished(ign):
if not finished:
req.finish()
def _error(f):
lp = log.msg("error during GET", facility="tahoe.webish", failure=f,
level=log.UNUSUAL, umid="xSiF3w")
if finished:
log.msg("but it's too late to tell them", parent=lp,
level=log.UNUSUAL, umid="j1xIbw")
return
req._tahoe_request_had_error = f # for HTTP-style logging
if req.startedWriting:
# The content-type is already set, and the response code has
# already been sent, so we can't provide a clean error
# indication. We can emit text (which a browser might
# interpret as something else), and if we sent a Size header,
# they might notice that we've truncated the data. Keep the
# error message small to improve the chances of having our
# error response be shorter than the intended results.
#
# We don't have a lot of options, unfortunately.
req.write("problem during download\n")
req.finish()
else:
# We haven't written anything yet, so we can provide a
# sensible error message.
eh = MyExceptionHandler()
eh.renderHTTP_exception(ctx, f)
d.addCallbacks(_finished, _error)
return req.deferred
