def send_status_response(environ, start_response, e, add_headers=None):
"""Start a WSGI response for a DAVError or status code."""
status = get_http_status_string(e)
headers = []
if add_headers:
headers.extend(add_headers)
# if 'keep-alive' in environ.get('HTTP_CONNECTION', '').lower():
# headers += [
# ('Connection', 'keep-alive'),
# ]
if e in (HTTP_NOT_MODIFIED, HTTP_NO_CONTENT):
# See paste.lint: these code don't have content
start_response(status, [("Content-Length", "0"),
("Date", get_rfc1123_time())] + headers)
return [b""]
if e in (HTTP_OK, HTTP_CREATED):
e = DAVError(e)
assert isinstance(e, DAVError)
content_type, body = e.get_response_page()
assert compat.is_bytes(body), body # If not, Content-Length is wrong!
start_response(
status,
[
("Content-Type", content_type),
("Date", get_rfc1123_time()),
("Content-Length", str(len(body))),
] + headers,
)
return [body]
def send_status_response(environ, start_response, e, add_headers=None, is_head=False):
"""Start a WSGI response for a DAVError or status code."""
status = get_http_status_string(e)
headers = []
if add_headers:
headers.extend(add_headers)
# if 'keep-alive' in environ.get('HTTP_CONNECTION', '').lower():
# headers += [
# ('Connection', 'keep-alive'),
# ]
if e in (HTTP_NOT_MODIFIED, HTTP_NO_CONTENT):
# See paste.lint: these code don't have content
start_response(
status, [("Content-Length", "0"), ("Date", get_rfc1123_time())] + headers
)
return [b""]
if e in (HTTP_OK, HTTP_CREATED):
e = DAVError(e)
assert isinstance(e, DAVError)
content_type, body = e.get_response_page()
if is_head:
body = compat.b_empty
assert compat.is_bytes(body), body # If not, Content-Length is wrong!
start_response(
status,
[
("Content-Type", content_type),
("Date", get_rfc1123_time()),
("Content-Length", str(len(body))),
]
+ headers,
)
return [body]
def add_property_response(multistatusEL, href, propList):
"""Append <response> element to <multistatus> element.
<prop> node depends on the value type:
- str or unicode: add element with this content
- None: add an empty element
- etree.Element: add XML element as child
- DAVError: add an empty element to an own <propstatus> for this status code
@param multistatusEL: etree.Element
@param href: global URL of the resource, e.g. 'http://server:port/path'.
@param propList: list of 2-tuples (name, value)
"""
# Split propList by status code and build a unique list of namespaces
nsCount = 1
nsDict = {}
nsMap = {}
propDict = {}
for name, value in propList:
status = "200 OK"
if isinstance(value, DAVError):
status = get_http_status_string(value)
# Always generate *empty* elements for props with error status
value = None
# Collect namespaces, so we can declare them in the <response> for
# compacter output
ns, _ = split_namespace(name)
if ns != "DAV:" and ns not in nsDict and ns != "":
nsDict[ns] = True
nsMap["NS{}".format(nsCount)] = ns
nsCount += 1
propDict.setdefault(status, []).append((name, value))
# <response>
responseEL = make_sub_element(multistatusEL, "{DAV:}response", nsmap=nsMap)
# log("href value:{}".format(string_repr(href)))
# etree.SubElement(responseEL, "{DAV:}href").text = toUnicode(href)
etree.SubElement(responseEL, "{DAV:}href").text = href
# etree.SubElement(responseEL, "{DAV:}href").text = compat.quote(href, safe="/" + "!*'(),"
# + "$-_|.")
# One <propstat> per status code
for status in propDict:
propstatEL = etree.SubElement(responseEL, "{DAV:}propstat")
# List of <prop>
propEL = etree.SubElement(propstatEL, "{DAV:}prop")
for name, value in propDict[status]:
if value is None:
etree.SubElement(propEL, name)
elif is_etree_element(value):
propEL.append(value)
else:
# value must be string or unicode
# log("{} value:{}".format(name, string_repr(value)))
# etree.SubElement(propEL, name).text = value
etree.SubElement(propEL, name).text = to_unicode_safe(value)
# <status>
etree.SubElement(propstatEL,
"{DAV:}status").text = "HTTP/1.1 {}".format(status)
def __call__(self, environ, start_response):
# Intercept start_response
sub_app_start_response = util.SubAppStartResponse()
try:
try:
# request_server app may be a generator (for example the GET handler)
# So we must iterate - not return self.next_app(..)!
# Otherwise the we could not catch exceptions here.
response_started = False
app_iter = self.next_app(environ, sub_app_start_response)
for v in app_iter:
# Start response (the first time)
if not response_started:
# Success!
start_response(
sub_app_start_response.status,
sub_app_start_response.response_headers,
sub_app_start_response.exc_info,
)
response_started = True
yield v
# Close out iterator
if hasattr(app_iter, "close"):
app_iter.close()
# Start response (if it hasn't been done yet)
if not response_started:
# Success!
start_response(
sub_app_start_response.status,
sub_app_start_response.response_headers,
sub_app_start_response.exc_info,
)
return
except DAVError as e:
_logger.debug("re-raising {}".format(e))
raise
except Exception as e:
# Caught a non-DAVError
if self._catch_all_exceptions:
# Catch all exceptions to return as 500 Internal Error
# traceback.print_exc(10, environ.get("wsgi.errors") or sys.stderr)
_logger.error("{}".format(traceback.format_exc(10)))
raise as_DAVError(e)
else:
_logger.error("Caught Exception\n{}".format(
traceback.format_exc(10)))
# traceback.print_exc(10, sys.stderr)
raise
except DAVError as e:
_logger.debug("caught {}".format(e))
status = get_http_status_string(e)
# Dump internal errors to console
if e.value == HTTP_INTERNAL_ERROR:
tb = traceback.format_exc(10)
_logger.error(
"Caught HTTPRequestException(HTTP_INTERNAL_ERROR)\n{}".
format(tb))
# traceback.print_exc(10, environ.get("wsgi.errors") or sys.stdout)
_logger.error("e.srcexception:\n{}".format(e.srcexception))
elif e.value in (HTTP_NOT_MODIFIED, HTTP_NO_CONTENT):
# _logger.warn("Forcing empty error response for {}".format(e.value))
# See paste.lint: these code don't have content
start_response(status, [("Content-Length", "0"),
("Date", util.get_rfc1123_time())])
yield b""
return
# If exception has pre-/post-condition: return as XML response,
# else return as HTML
content_type, body = e.get_response_page()
# TODO: provide exc_info=sys.exc_info()?
start_response(
status,
[
("Content-Type", content_type),
("Content-Length", str(len(body))),
("Date", util.get_rfc1123_time()),
],
)
yield body
return
def add_property_response(multistatusEL, href, propList):
"""Append <response> element to <multistatus> element.
<prop> node depends on the value type:
- str or unicode: add element with this content
- None: add an empty element
- etree.Element: add XML element as child
- DAVError: add an empty element to an own <propstatus> for this status code
@param multistatusEL: etree.Element
@param href: global URL of the resource, e.g. 'http://server:port/path'.
@param propList: list of 2-tuples (name, value)
"""
# Split propList by status code and build a unique list of namespaces
nsCount = 1
nsDict = {}
nsMap = {}
propDict = {}
for name, value in propList:
status = "200 OK"
if isinstance(value, DAVError):
status = get_http_status_string(value)
# Always generate *empty* elements for props with error status
value = None
# Collect namespaces, so we can declare them in the <response> for
# compacter output
ns, _ = split_namespace(name)
if ns != "DAV:" and ns not in nsDict and ns != "":
nsDict[ns] = True
nsMap["NS{}".format(nsCount)] = ns
nsCount += 1
propDict.setdefault(status, []).append((name, value))
# <response>
responseEL = make_sub_element(multistatusEL, "{DAV:}response", nsmap=nsMap)
# log("href value:{}".format(string_repr(href)))
# etree.SubElement(responseEL, "{DAV:}href").text = toUnicode(href)
etree.SubElement(responseEL, "{DAV:}href").text = href
# etree.SubElement(responseEL, "{DAV:}href").text = compat.quote(href, safe="/" + "!*'(),"
# + "$-_|.")
# One <propstat> per status code
for status in propDict:
propstatEL = etree.SubElement(responseEL, "{DAV:}propstat")
# List of <prop>
propEL = etree.SubElement(propstatEL, "{DAV:}prop")
for name, value in propDict[status]:
if value is None:
etree.SubElement(propEL, name)
elif is_etree_element(value):
propEL.append(value)
else:
# value must be string or unicode
# log("{} value:{}".format(name, string_repr(value)))
# etree.SubElement(propEL, name).text = value
etree.SubElement(propEL, name).text = to_unicode_safe(value)
# <status>
etree.SubElement(propstatEL, "{DAV:}status").text = "HTTP/1.1 {}".format(status)
def __call__(self, environ, start_response):
# Intercept start_response
sub_app_start_response = util.SubAppStartResponse()
try:
try:
# request_server app may be a generator (for example the GET handler)
# So we must iterate - not return self.next_app(..)!
# Otherwise the we could not catch exceptions here.
response_started = False
app_iter = self.next_app(environ, sub_app_start_response)
for v in app_iter:
# Start response (the first time)
if not response_started:
# Success!
start_response(
sub_app_start_response.status,
sub_app_start_response.response_headers,
sub_app_start_response.exc_info,
)
response_started = True
yield v
# Close out iterator
if hasattr(app_iter, "close"):
app_iter.close()
# Start response (if it hasn't been done yet)
if not response_started:
# Success!
start_response(
sub_app_start_response.status,
sub_app_start_response.response_headers,
sub_app_start_response.exc_info,
)
return
except DAVError as e:
_logger.debug("re-raising {}".format(e))
raise
except Exception as e:
# Caught a non-DAVError
if self.catch_all_exceptions:
# Catch all exceptions to return as 500 Internal Error
# traceback.print_exc(10, environ.get("wsgi.errors") or sys.stderr)
_logger.error("{}".format(traceback.format_exc(10)))
raise as_DAVError(e)
else:
_logger.error(
"Caught Exception\n{}".format(traceback.format_exc(10))
)
# traceback.print_exc(10, sys.stderr)
raise
except DAVError as e:
_logger.debug("caught {}".format(e))
status = get_http_status_string(e)
# Dump internal errors to console
if e.value == HTTP_INTERNAL_ERROR:
tb = traceback.format_exc(10)
_logger.error(
"Caught HTTPRequestException(HTTP_INTERNAL_ERROR)\n{}".format(tb)
)
# traceback.print_exc(10, environ.get("wsgi.errors") or sys.stdout)
_logger.error("e.src_exception:\n{}".format(e.src_exception))
elif e.value in (HTTP_NOT_MODIFIED, HTTP_NO_CONTENT):
# _logger.warning("Forcing empty error response for {}".format(e.value))
# See paste.lint: these code don't have content
start_response(
status, [("Content-Length", "0"), ("Date", util.get_rfc1123_time())]
)
yield b""
return
# If exception has pre-/post-condition: return as XML response,
# else return as HTML
content_type, body = e.get_response_page()
# TODO: provide exc_info=sys.exc_info()?
start_response(
status,
[
("Content-Type", content_type),
("Content-Length", str(len(body))),
("Date", util.get_rfc1123_time()),
],
)
yield body
return
