def start(self, interval=DEFAULT_SEARCH_TIME,
search_type=DEFAULT_SEARCH_TYPE, http_version="1.1",
man='"ssdp:discover"', mx=1, additionals={}):
""" Starts the search.
@param interval: interval between searchs. Default is 600.0 seconds
@param search_type: type of the search, default is "ssdp:all"
@param http_version: http version for m-search (default is 1.1)
@param man: man field for m-search (default is ssdp:discover)
@param mx: mx field for m-search (default is 1)
@param additionals: dict containing additional field to be appended
in the end of the m-search message (default is
a empty dictionary)
@type interval: float
@type search_type: string
@type http_version: string
@type man: string
@type mx: int
@type additionals: dict
"""
if not self.is_running():
self.ssdp.search_type = search_type
self.listen_udp.start()
self.loopcall._args = (search_type, http_version, man, mx,
additionals, )
self.loopcall.start(interval, now=True)
log.debug('MSearch started')
else:
log.warning(self.msg_already_started)
def start(self, interval, now=True):
""" Starts the function calls in the interval specified. If now is
False, it waits the interval before starting doing calls.
@param interval: interval between calls
@param now: whether it will start calling now or not
@type interval: float
@type now: boolean
"""
# print "@@@@@@@@ LoopingCall start: " + str(self)
# print "@@@@@@@@ LoopingCall start interval: " + str(interval)
# print "@@@@@@@@ LoopingCall start now: " + str(now)
if not self.is_running():
self.interval = interval
self.running = True
assert interval != 0, ('(warning) starting LoopingCall with \
interval %f' % self.interval)
if now:
self._register()
else:
Timer(interval, self._register).start()
else:
log.warning(self.msg_already_started)
def listener_stop(self):
""" Stops the search.
"""
if self.listener_is_running():
log.debug('Multicast event listener stopped')
self.listen_udp.stop()
else:
log.warning(self.msg_already_stopped)
def stop(self):
""" Stops the LoopingCall.
"""
if self.running:
self.running = False
self._unregister()
else:
log.warning(self.msg_already_stopped)
def stop(self):
""" Stops the LoopingCall.
"""
if self.running:
self.running = False
self._unregister()
else:
log.warning(self.msg_already_stopped)
def start(self):
""" Starts the SSDPServer.
"""
if not self.is_running():
self.udp_listener.start()
self.running = True
else:
log.warning(self.msg_already_started)
def start(self):
""" Starts the SSDPServer.
"""
if not self.is_running():
self.udp_listener.start()
self.running = True
else:
log.warning(self.msg_already_started)
def listener_start(self):
""" Starts the listener.
"""
if not self.listener_is_running():
self.listen_udp.start()
log.debug('Multicast event listener started')
else:
log.warning(self.msg_already_started)
def get_byte_ranges(r, clen):
""" Based on a Range header and on the content length of a file, returns a
list of byte ranges requested. Returns None if the header was invalid and an
empty list in case of invalid range.
Based on Cherrypy 3.1 implementation.
@param r: range header
@param clen: content length
"""
# Byte unit supported by us (HTTP1.1) is "bytes". Get the ranges string.
log.debug('Range: %s, %d' % (r, clen))
if not r:
return None
bunit, branges = r.split('=', 1)
log.debug('Bunit, branges: %s %s' % (bunit, branges))
if bunit != 'bytes':
# Ignore any other kind of units
log.warning('Received a request with wrong Range header (unit is not'\
'bytes')
return None
ranges = []
for br in branges.split(','):
start, stop = [b.strip() for b in br.split('-', 1)]
log.debug('%s %s' % (start, stop))
if not start:
# If the first number is missing, should return the last n bytes
# and stop must be present, or else return the whole body.
if not stop:
# Invalid! Return None and indicate the whole body
return None
# Last n bytes
ranges.append((clen - int(stop), clen))
log.debug('Ranges: %s' % ranges)
else:
# Start is present
if not stop:
# Whole body
stop = clen - 1
if int(start) >= clen:
# If start is equal to or larger than the size of the document
# minus one, return the whole body
continue
if int(stop) < int(start):
return None
ranges.append((int(start), int(stop) + 1))
log.debug('Ranges: %s' % ranges)
log.debug('Ranges: %s' % ranges)
return ranges
def get_byte_ranges(r, clen):
""" Based on a Range header and on the content length of a file, returns a
list of byte ranges requested. Returns None if the header was invalid and an
empty list in case of invalid range.
Based on Cherrypy 3.1 implementation.
@param r: range header
@param clen: content length
"""
# Byte unit supported by us (HTTP1.1) is "bytes". Get the ranges string.
log.debug('Range: %s, %d' % (r, clen))
if not r:
return None
bunit, branges = r.split('=', 1)
log.debug('Bunit, branges: %s %s' % (bunit, branges))
if bunit != 'bytes':
# Ignore any other kind of units
log.warning('Received a request with wrong Range header (unit is not'\
'bytes')
return None
ranges = []
for br in branges.split(','):
start, stop = [b.strip() for b in br.split('-', 1)]
log.debug('%s %s' % (start, stop))
if not start:
# If the first number is missing, should return the last n bytes
# and stop must be present, or else return the whole body.
if not stop:
# Invalid! Return None and indicate the whole body
return None
# Last n bytes
ranges.append((clen - int(stop), clen))
log.debug('Ranges: %s' % ranges)
else:
# Start is present
if not stop:
# Whole body
stop = clen - 1
if int(start) >= clen:
# If start is equal to or larger than the size of the document
# minus one, return the whole body
continue
if int(stop) < int(start):
return None
ranges.append((int(start), int(stop) + 1))
log.debug('Ranges: %s' % ranges)
log.debug('Ranges: %s' % ranges)
return ranges
def start(self):
""" Starts the control point.
"""
if not self.is_running():
self._ssdp_server.start()
self._event_listener.start(self.event_host)
self._multicast_event_listener.start()
else:
log.warning(self.msg_already_started)
def start(self):
""" Starts the control point.
"""
if not self.is_running():
self._ssdp_server.start()
self._event_listener.start(self.event_host)
self._multicast_event_listener.start()
else:
log.warning(self.msg_already_started)
def stop(self):
""" Stops the webserver.
"""
if self.is_running():
if not self.adapter:
raise RuntimeError('Adapter not set')
self.adapter.stop()
else:
log.warning(self.msg_already_stopped)
def _datagram_received(self, data, address):
""" Callback for the UDPListener when messages arrive.
@param data: raw data received
@param host: host where data came from
@param port: port where data came from
@type data: string
@type host: string
@type port: integer
"""
(host, port) = address
try:
cmd, headers = parse_http_response(data)
body = data[data.find("<"):data.rfind(">")+1]
except Exception as err:
log.error('Error while receiving datagram packet: %s', str(err))
return
# Render notify message
if not (cmd[0] == 'NOTIFY' and cmd[1] == '*' and cmd[2] == 'HTTP/1.0' and \
'content-type' in headers and \
headers['content-type'] == 'text/xml; charset="utf-8"' and \
'nt' in headers and headers['nt'] == 'upnp:event' and \
'nts' in headers and headers['nts'] == 'upnp:propchange' and \
'host' in headers and 'usn' in headers and \
'svcid' in headers and 'seq' in headers and \
'lvl' in headers and 'bootid.upnp.org' in headers and \
'content-length' in headers):
log.warning('Invalid message')
return
addr = headers['host'].split(':')[0]
port = int(headers['host'].split(':')[1])
udn = headers['usn'].split('::')[0]
service_type = headers['usn'].split('::')[1]
svcid = headers['svcid']
seq = int(headers['seq'])
lvl = headers['lvl']
content_length = int(headers['content-length'])
bootid = int(headers['bootid.upnp.org'])
if addr != UPnPDefaults.MULTICAST_EVENT_ADDR or \
port != UPnPDefaults.MULTICAST_EVENT_PORT:
log.warning('Invalid address %s:%d' % (addr, port))
return
changed_vars = read_notify_message_body(body)
self.control_point._on_event('', changed_vars)
for id, dev in list(self.control_point._known_devices.items()):
service = self._find_service(dev, udn, service_type, svcid)
if service != None:
service._on_event(changed_vars)
log.debug('Multicast event. Event changed vars: %s', changed_vars)
def stop(self):
""" Stops the search.
"""
if self.is_running():
log.debug('MSearch stopped')
self.listen_udp.stop()
self.loopcall.stop()
else:
log.warning(self.msg_already_stopped)
def stop(self):
""" Stops the search.
"""
if self.is_running():
log.debug('MSearch stopped')
self.listen_udp.stop()
self.loopcall.stop()
else:
log.warning(self.msg_already_stopped)
def stop(self):
""" Stops the webserver.
"""
if self.is_running():
if not self.adapter:
raise RuntimeError('Adapter not set')
self.adapter.stop()
else:
log.warning(self.msg_already_stopped)
def start(self):
""" Starts the webserver.
"""
if not self.is_running():
if not self.adapter:
raise RuntimeError('Adapter not set.')
threaded_call.run_async_function(self.adapter.start)
self.running = True
else:
log.warning(self.msg_already_started)
def __add__(self, obj):
if issubclass(obj.__class__, Device):
log.debug("Adding device %s as embedded for %s", obj, self)
self.add_device(obj)
elif issubclass(obj.__class__, BaseService):
log.debug("Adding service %s as service for %s", obj, self)
self.add_service(obj)
else:
log.warning("Ignored invalid addition: %s + %s", self, obj)
return self
def __init__(self):
import brisa.core
import sys
if 'brisa.core.reactor' in sys.modules:
from brisa.core import log
log.warning('reactor already installed')
brisa.core.reactor = self
sys.modules['brisa.core.reactor'] = self
def start(self):
""" Starts the webserver.
"""
if not self.is_running():
if not self.adapter:
raise RuntimeError('Adapter not set.')
threaded_call.run_async_function(self.adapter.start)
self.running = True
else:
log.warning(self.msg_already_started)
def __add__(self, obj):
if issubclass(obj.__class__, Device):
log.debug("Adding device %s as embedded for %s", obj, self)
self.add_device(obj)
elif issubclass(obj.__class__, BaseService):
log.debug("Adding service %s as service for %s", obj, self)
self.add_service(obj)
else:
log.warning("Ignored invalid addition: %s + %s", self, obj)
return self
def stop_control_point(self):
""" Stops the control point.
"""
if self.is_running():
if self.is_msearch_running():
self.stop_search()
self._ssdp_server.stop()
self._event_listener.stop()
else:
log.warning(self.msg_already_stopped)
def service_has_been_built(self, built_ok):
log.debug("Service fetched, %d left, result %s", self.pending_services - 1, built_ok)
if not built_ok and not brisa.__tolerate_service_parse_failure__:
log.warning("Device killed")
self.device = None
self.pending_services -= 1
if self.pending_services <= 0:
log.debug("All services fetched, sending device forward")
self.callback(self.cargo, self.device)
def start(self):
""" Starts the control point.
"""
print "ControlPoint.start"
if not self.is_running():
print "ControlPoint.start _ssdp_server"
self._ssdp_server.start()
print "ControlPoint.start _event_listener"
self._event_listener.start(self.event_host)
else:
log.warning(self.msg_already_started)
def stop_control_point(self):
""" Stops the control point.
"""
if self.is_running():
if self.is_msearch_running():
self.stop_search()
self._ssdp_server.stop()
self._event_listener.stop()
self._multicast_event_listener.stop()
else:
log.warning(self.msg_already_stopped)
def service_has_been_built(self, built_ok):
log.debug("Service fetched, %d left, result %s", \
self.pending_services - 1, built_ok)
if not built_ok and not brisa.__tolerate_service_parse_failure__:
log.warning("Device killed")
self.device = None
self.pending_services -= 1
if self.pending_services <= 0:
log.debug("All services fetched, sending device forward")
self.callback(self.cargo, self.device)
def url_fetch(url, filename='', attempts=0, interval=0):
""" Fetches an URL into a file or returns a file descriptor. If attempts
and interval are not specified, they get their values from
brisa.url_fetch_attempts and brisa.url_fetch_attempts_interval.
@param url: URL to be fetched
@param filename: if specified fetch result gets written on this path
@param attempts: number of attempts
@param interval: interval between attempts in seconds
@type url: string
@type filename: string
@type attempts: integer
@type interval: float
"""
if not attempts:
attempts = brisa.url_fetch_attempts
if not interval:
interval = brisa.url_fetch_attempts_interval
handle = None
last_exception = None
for k in range(attempts):
log.debug('Fetching %r (attempt %d)' % (url, k))
req = urllib.request.Request(url)
try:
handle = urllib.request.urlopen(req)
except IOError as e:
if hasattr(e, 'reason'):
log.warning('Attempt %d: failed to reach a server. Reason: %s'%
(k, e.reason))
elif hasattr(e, 'code'):
log.warning('Attempt %d: the server couldn\'t fulfill the '\
'request. Error code: %s' % (k, e.code))
handle = None
last_exception = e
finally:
if handle != None:
if not filename:
# Return mode
log.debug('url %r fetched successfully' % url)
return handle
else:
log.debug('writing data to filename %s' % filename)
# Writing mode
shutil.copyfile(handle, open(filename, 'w'))
return None
sleep(interval)
if last_exception:
raise last_exception
else:
return None
def stop(self):
""" Sends bye bye notifications and stops the SSDPServer.
"""
if self.is_running():
# Avoid racing conditions
own_temp = self.advertised.copy()
for usn in own_temp:
self._do_byebye(usn)
self.renew_loop.stop()
self.udp_listener.stop()
self.running = False
else:
log.warning(self.msg_already_stopped)
def stop(self):
""" Sends bye bye notifications and stops the SSDPServer.
"""
if self.is_running():
# Avoid racing conditions
own_temp = self.advertised.copy()
for usn in own_temp:
self._do_byebye(usn)
self.renew_loop.stop()
self.udp_listener.stop()
self.running = False
else:
log.warning(self.msg_already_stopped)
def start(self):
""" Starts the listener.
"""
if not self.is_running():
for name, state_var in list(self.service.get_variables().items()):
if state_var.send_events and state_var.multicast:
state_var.subscribe_for_update(self._update_variable)
if not self.force_event_reload:
self.l_call.start(self.event_reload_time)
self._is_running = True
log.debug('Multicast event controller started with event reload time: %d'
% self.event_reload_time)
else:
log.warning(self.msg_already_started)
def stop(self):
""" Stops the search.
"""
if self.is_running():
log.debug('Multicast event controller stopped')
for name, state_var in list(self.service.get_variables().items()):
if state_var.send_events and state_var.multicast:
state_var.unsubscribe_for_update(self._update_variable)
if not self.force_event_reload:
self.l_call.stop()
reactor.rem_after_stop_func(self.stop)
self._is_running = False
else:
log.warning(self.msg_already_stopped)
def stop(self):
""" Stops the search.
"""
if self.is_running():
log.debug('Multicast event controller stopped')
for name, state_var in self.service.get_variables().items():
if state_var.send_events and state_var.multicast:
state_var.unsubscribe_for_update(self._update_variable)
if not self.force_event_reload:
self.l_call.stop()
reactor.rem_after_stop_func(self.stop)
self._is_running = False
else:
log.warning(self.msg_already_stopped)
def start(self):
""" Starts the listener.
"""
self.listener_start()
if not self.is_running():
for name, state_var in self.service.get_variables().items():
if state_var.send_events and state_var.multicast:
state_var.subscribe_for_update(self._update_variable)
if not self.force_event_reload:
self.l_call.start(self.event_reload_time)
self._is_running = True
log.debug('Multicast event controller started with event reload time: %d'
% self.event_reload_time)
else:
log.warning(self.msg_already_started)
def start(self, interval=DEFAULT_SEARCH_TIME,
search_type=DEFAULT_SEARCH_TYPE):
""" Starts the search.
@param interval: interval between searchs. Default is 600.0 seconds
@param search_type: type of the search, default is "ssdp:all"
@type interval: float
@type search_type: string
"""
if not self.is_running():
self.listen_udp.start()
self.loopcall._args = (search_type, )
self.loopcall.start(interval, now=True)
log.debug('MSearch started')
else:
log.warning(self.msg_already_started)
def start(self,
interval=DEFAULT_SEARCH_TIME,
search_type=DEFAULT_SEARCH_TYPE,
http_version="1.1",
man='"ssdp:discover"',
mx=1,
additionals={}):
""" Starts the search.
@param interval: interval between searchs. Default is 600.0 seconds
@param search_type: type of the search, default is "ssdp:all"
@param http_version: http version for m-search (default is 1.1)
@param man: man field for m-search (default is ssdp:discover)
@param mx: mx field for m-search (default is 1)
@param additionals: dict containing additional field to be appended
in the end of the m-search message (default is
a empty dictionary)
@type interval: float
@type search_type: string
@type http_version: string
@type man: string
@type mx: int
@type additionals: dict
"""
if not self.is_running():
self.ssdp.search_type = search_type
self.listen_udp.start()
self.loopcall._args = (
search_type,
http_version,
man,
mx,
additionals,
)
self.loopcall.start(interval, now=True)
log.debug('MSearch started')
else:
log.warning(self.msg_already_started)
def url_fetch(url, filename='', attempts=0, interval=0, silent=False):
""" Fetches an URL into a file or returns a file descriptor. If attempts
and interval are not specified, they get their values from
brisa.url_fetch_attempts and brisa.url_fetch_attempts_interval.
@param url: URL to be fetched
@param filename: if specified fetch result gets written on this path
@param attempts: number of attempts
@param interval: interval between attempts in seconds#
@param silent: silently ignore exception and return none
@type url: string
@type filename: string
@type attempts: integer
@type interval: float
"""
if not attempts:
attempts = brisa.url_fetch_attempts
if not interval:
interval = brisa.url_fetch_attempts_interval
handle = None
last_exception = None
for k in range(attempts):
log.debug('Fetching %r (attempt %d)' % (url, k))
req = urllib2.Request(url)
try:
handle = urllib2.urlopen(req)
except IOError, e:
if hasattr(e, 'reason'):
log.warning('Attempt %d: failed to reach a server. Reason: %s'%
(k, e.reason))
elif hasattr(e, 'code'):
log.warning('Attempt %d: the server couldn\'t fulfill the '\
'request. Error code: %s' % (k, e.code))
handle = None
last_exception = e
finally:
def url_fetch(url, filename='', attempts=0, interval=0):
""" Fetches an URL into a file or returns a file descriptor. If attempts
and interval are not specified, they get their values from
brisa.url_fetch_attempts and brisa.url_fetch_attempts_interval.
@param url: URL to be fetched
@param filename: if specified fetch result gets written on this path
@param attempts: number of attempts
@param interval: interval between attempts in seconds
@type url: string
@type filename: string
@type attempts: integer
@type interval: float
"""
if not attempts:
attempts = brisa.url_fetch_attempts
if not interval:
interval = brisa.url_fetch_attempts_interval
handle = None
last_exception = None
for k in range(attempts):
log.debug('Fetching %r (attempt %d)' % (url, k))
req = urllib2.Request(url)
try:
handle = urllib2.urlopen(req)
except IOError, e:
if hasattr(e, 'reason'):
log.warning(
'Attempt %d: failed to reach a server. Reason: %s' %
(k, e.reason))
elif hasattr(e, 'code'):
log.warning('Attempt %d: the server couldn\'t fulfill the '\
'request. Error code: %s' % (k, e.code))
handle = None
last_exception = e
finally:
def start(self, interval=DEFAULT_SEARCH_TIME,
search_type=DEFAULT_SEARCH_TYPE):
""" Starts the search.
@param interval: interval between searchs. Default is 600.0 seconds
@param search_type: type of the search, default is "ssdp:all"
@type interval: float
@type search_type: string
"""
# interval = 30.0
if not self.is_running():
self.search_type = search_type
self.listen_udp.start()
# print ">>>>>>>>> interval: " + str(interval)
self.loopcall.start(interval, now=True)
log.debug('MSearch started')
else:
log.warning(self.msg_already_started)
except Exception, err:
log.error('Error while receiving datagram packet: %s', str(err))
return
# Render notify message
if not (cmd[0] == 'NOTIFY' and cmd[1] == '*' and cmd[2] == 'HTTP/1.0' and \
headers.has_key('content-type') and \
headers['content-type'] == 'text/xml; charset="utf-8"' and \
headers.has_key('nt') and headers['nt'] == 'upnp:event' and \
headers.has_key('nts') and headers['nts'] == 'upnp:propchange' and \
headers.has_key('host') and headers.has_key('usn') and \
headers.has_key('svcid') and headers.has_key('seq') and \
headers.has_key('lvl') and headers.has_key('bootid.upnp.org') and \
headers.has_key('content-length')):
log.warning('Invalid message')
return
addr = headers['host'].split(':')[0]
port = int(headers['host'].split(':')[1])
udn = headers['usn'].split('::')[0]
service_type = headers['usn'].split('::')[1]
svcid = headers['svcid']
seq = int(headers['seq'])
lvl = headers['lvl']
content_length = int(headers['content-length'])
bootid = int(headers['bootid.upnp.org'])
if addr != UPnPDefaults.MULTICAST_EVENT_ADDR or \
port != UPnPDefaults.MULTICAST_EVENT_PORT:
log.warning('Invalid address %s:%d' % (addr, port))
'because of SSDPServer.receive_notify is False)',
host, port)
return
if self.search_type != "upnp:rootdevice" and \
self.search_type != "sspd:all" and \
self.search_type != headers['nt']:
# Ignore notify
log.debug('Received NOTIFY command from %s:%s (ignored '\
'because of SSDPServer.search_type is different'\
'than headers["nt"])',
host, port)
return
# SSDP presence
self._notify_received(headers, (host, port))
else:
log.warning('Received unknown SSDP command %s with headers %s '\
'from %s:%s', cmd, str(headers), host, port)
def _discovery_request(self, headers, (host, port)):
""" Processes discovery requests and responds accordingly.
@param headers: discovery headers
@param host: discovery source host
@param port: discovery source port
@type headers: dictionary
@type host: string
@type port integer
"""
for dev_info in self.known_device.values():
if (headers['st'] == 'ssdp:all' or dev_info['ST'] == headers['st']):
response = []
def application(self, environ, start_response, response=None):
""" Application wsgi callback that processes a request. Must not be
called by the user.
@param response: used when the request was redirected to this file. If
not present, then this file was accessed directly (no
redirections) and in this case environ and
start_response must be passed accordingly.
"""
req = Request(environ)
if response:
# Redirect mode, see method doc and comments at the end
r = response
else:
# Normal request
r = Response(200, start_response)
if not os.path.exists(self.path):
log.warning('Received request on missing file: %s' % self.path)
return simple_response(500, r.start_response,
'File not available.')
try:
st = os.stat(self.path)
except OSError:
return simple_response(404, r.start_response)
r.body = open(self.path, 'rb')
content_length = st.st_size
h = r.headers
h['Last-modified'] = rfc822.formatdate(st.st_mtime)
h['Content-type'] = self._content_type
if self._disposition:
h['Content-disposition'] = '%s; filename="%s"' % \
(self._disposition, self.name)
if req.protocol >= (1, 1):
h['Accept-ranges'] = 'bytes'
if 'range' not in req.headers:
# Send the whole response body
h['Content-length'] = str(content_length)
else:
ranges = get_byte_ranges(req.headers['Range'], content_length)
if ranges == []:
# Request range not satisfiable
r.status = 416
r.headers['Content-range'] = 'bytes */%s' % content_length
r.headers['Content-length'] = 0
r.body = ['']
elif ranges:
# Partial content status
r.status = 206
if len(ranges) == 1:
# Single part
setup_single_part_response(r, ranges[0],
content_length)
else:
# Multipart
setup_multi_part_response(r, ranges, content_length,
self._content_type)
# Recalculate content length
s = 0
for ra in ranges:
s += ra[1] - ra[0] + 1
h['Content-length'] = str(s)
else:
# Lower protocols do not support ranges, whole body
h['Content-length'] = str(content_length)
if not response:
# Normal request, not redirected. When redirected, who respond()s is
# the caller.
r._respond()
return r.body
log.debug("Received M-Search command from %s:%s", host, port)
self._discovery_request(headers, (host, port))
elif cmd[0] == "NOTIFY" and cmd[1] == "*":
log.debug("NOTIFY receive_notify: %s", self.receive_notify)
if not self.receive_notify:
# Ignore notify
log.debug(
"Received NOTIFY command from %s:%s (ignored " "because of SSDPServer.receive_notify is False)",
host,
port,
)
return
# SSDP presence
self._notify_received(headers, (host, port))
else:
log.warning("Received unknown SSDP command %s with headers %s " "from %s:%s", cmd, str(headers), host, port)
def _discovery_request(self, headers, (host, port)):
""" Processes discovery requests and responds accordingly.
@param headers: discovery headers
@param host: discovery source host
@param port: discovery source port
@type headers: dictionary
@type host: string
@type port integer
"""
right_key = 0
# Do we know about this service?
and headers.has_key("content-type")
and headers["content-type"] == 'text/xml; charset="utf-8"'
and headers.has_key("nt")
and headers["nt"] == "upnp:event"
and headers.has_key("nts")
and headers["nts"] == "upnp:propchange"
and headers.has_key("host")
and headers.has_key("usn")
and headers.has_key("svcid")
and headers.has_key("seq")
and headers.has_key("lvl")
and headers.has_key("bootid.upnp.org")
and headers.has_key("content-length")
):
log.warning("Invalid message")
return
addr = headers["host"].split(":")[0]
port = int(headers["host"].split(":")[1])
udn = headers["usn"].split("::")[0]
service_type = headers["usn"].split("::")[1]
svcid = headers["svcid"]
seq = int(headers["seq"])
lvl = headers["lvl"]
content_length = int(headers["content-length"])
bootid = int(headers["bootid.upnp.org"])
if addr != UPnPDefaults.MULTICAST_EVENT_ADDR or port != UPnPDefaults.MULTICAST_EVENT_PORT:
log.warning("Invalid address %s:%d" % (addr, port))
return
# and headers['man'] == '"ssdp:discover"':
# SSDP discovery
log.debug('Received M-Search command from %s:%s', host, port)
self._discovery_request(headers, (host, port))
elif cmd[0] == 'NOTIFY' and cmd[1] == '*':
log.debug("NOTIFY receive_notify: %s", self.receive_notify)
if not self.receive_notify:
# Ignore notify
log.debug('Received NOTIFY command from %s:%s (ignored '\
'because of SSDPServer.receive_notify is False)',
host, port)
return
# SSDP presence
self._notify_received(headers, (host, port))
else:
log.warning('Received unknown SSDP command %s with headers %s '\
'from %s:%s', cmd, str(headers), host, port)
def _discovery_request(self, headers, (host, port)):
""" Processes discovery requests and responds accordingly.
@param headers: discovery headers
@param host: discovery source host
@param port: discovery source port
@type headers: dictionary
@type host: string
@type port integer
"""
right_key = 0
# Do we know about this service?
def application(self, environ, start_response, response=None):
""" Application wsgi callback that processes a request. Must not be
called by the user.
@param response: used when the request was redirected to this file. If
not present, then this file was accessed directly (no
redirections) and in this case environ and
start_response must be passed accordingly.
"""
req = Request(environ)
if response:
# Redirect mode, see method doc and comments at the end
r = response
else:
# Normal request
r = Response(200, start_response)
if not os.path.exists(self.path):
log.warning('Received request on missing file: %s' % self.path)
return simple_response(500, r.start_response, 'File not available.')
try:
st = os.stat(self.path)
except OSError:
return simple_response(404, r.start_response)
r.body = open(self.path, 'rb')
content_length = st.st_size
h = r.headers
h['Last-modified'] = rfc822.formatdate(st.st_mtime)
h['Content-type'] = self._content_type
if self._disposition:
h['Content-disposition'] = '%s; filename="%s"' % \
(self._disposition, self.name)
if req.protocol >= (1, 1):
h['Accept-ranges'] = 'bytes'
if 'range' not in req.headers:
# Send the whole response body
h['Content-length'] = str(content_length)
else:
ranges = get_byte_ranges(req.headers['Range'], content_length)
if ranges == []:
# Request range not satisfiable
r.status = 416
r.headers['Content-range'] = 'bytes */%s' % content_length
r.headers['Content-length'] = 0
r.body = ['']
elif ranges:
# Partial content status
r.status = 206
if len(ranges) == 1:
# Single part
setup_single_part_response(r, ranges[0], content_length)
else:
# Multipart
setup_multi_part_response(r, ranges, content_length,
self._content_type)
# Recalculate content length
s = 0
for ra in ranges:
s += ra[1] - ra[0] + 1
h['Content-length'] = str(s)
else:
# Lower protocols do not support ranges, whole body
h['Content-length'] = str(content_length)
if not response:
# Normal request, not redirected. When redirected, who respond()s is
# the caller.
r._respond()
return r.body
