def __init__ (self, local_ip=None):
"""__init__(local_ip=None) -> ftp_client
Creates a new ftp_client. Binds to the local_ip if it is given.
NOTE: You MUST del the stream object when you are done, or this will leak.
"""
self.local_ip = local_ip
self.s = coro.make_socket (socket.AF_INET, socket.SOCK_STREAM)
if local_ip:
self.s.bind((local_ip,0))
self.stream = read_stream.stream_reader (self.recv)
def __init__ (self, server, conn, addr, session_id):
self.server = server
self.current_mode = 'a'
self.addr = addr
self.conn = conn
self.session_id = session_id
self.thread_id = None
# client data port. Defaults to 'the same as the control connection'.
self.client_addr = (addr[0], 21)
self.in_buffer = ''
self.closing = 0
self.passive_acceptor = None
self.filesystem = None
self.authorized = 0
self.stream = read_stream.stream_reader (self.read)
self.user = None
def run (self, conn, peer, server_obj, handlers):
self.conn = conn
self.server = server_obj
self.peer = peer
# Note that peer could be a fake address, and server_obj can be None.
# These indicate a "backdoor" request from the gui.
try:
try:
count = 0
qlog.write('WEBUI.CONN_INIT', 'http', id(self), peer[0], peer[1])
while 1:
if self.server and self.server.shutdown_flag:
break
try:
# We use self.stream to read the header line-by-line
# and then switch to reading directly from the socket
# for the body (if needed). Reuse the previous
# instance if it exists, to support HTTP pipelining.
if not self.stream:
self.stream = read_stream.stream_reader(self.conn.recv)
request_line = self.read_line()
if not request_line:
break
except socket.error:
qlog.write('WEBUI.CONN_ERROR', 'http', id(self), 'socket error')
break
count = count + 1
headers = self.read_header()
#print '\n'.join (headers) + '\n\n'
request = http_request (self, request_line, headers)
request.read_body()
if request._error:
# Bad Request
request.error (400)
return
else:
try:
try:
handler = self.pick_handler (handlers, request)
if handler:
handler.handle_request (request)
else:
self.not_found (request)
if not request._done:
request.done()
except OSError, err:
if err[0] == errno.EPIPE:
pass # ignore broken pipe error
else:
raise # process exception in outer try
# These exceptions are used inside the coro
# stuff and shouldn't be thrown away
except (coro.TimeoutError, coro.Interrupted):
raise
except:
tb = coro.compact_traceback()
## sys.stderr.write (repr(tb))
request.error (500, tb)
qlog.write('COMMON.APP_FAILURE',
tb + ' request: ' + `request`)
tb = None
if request._close:
# ok, this gets interesting. the connection needs to close
# here. the finally clause below isn't getting hit because
# the session and client are running in the same coroutine.
# that's bad, I think.
conn.close()
break
# this should be a policy decision of the owner of logfp
# self.logfp.flush()
except read_stream.BufferOverflow:
# Indicates a request header that exceeded the line
# buffer, which may indicate an attack on the server.
# We just close the connection without a response.
# TODO:lrosenstein - log this since it may be an attack?
qlog.write('WEBUI.CONN_ERROR', 'http',
id(self), 'line buffer limit exceeded')
pass
except sslip.Error, why:
# Most likely a problem with SSL negotiation
qlog.write('WEBUI.CONN_ERROR',
'https',
id(self),
why[1])
pass
except OSError, err:
# We got some kind of I/O error that wasn't handled
# elsewhere. Since this seem to happen because the
# client closed the connection, it is safe to ignore
# the exception.
qlog.write('WEBUI.CONN_ERROR',
'http', id(self), 'OS error %s' % str(err[1]))
pass
def run(self, conn, peer, server_obj, handlers):
self.conn = conn
self.server = server_obj
self.peer = peer
# Note that peer could be a fake address, and server_obj can be None.
# These indicate a "backdoor" request from the gui.
try:
try:
count = 0
qlog.write('WEBUI.CONN_INIT', 'http', id(self), peer[0],
peer[1])
while 1:
if self.server and self.server.shutdown_flag:
break
try:
# We use self.stream to read the header line-by-line
# and then switch to reading directly from the socket
# for the body (if needed). Reuse the previous
# instance if it exists, to support HTTP pipelining.
if not self.stream:
self.stream = read_stream.stream_reader(
self.conn.recv)
request_line = self.read_line()
if not request_line:
break
except socket.error:
qlog.write('WEBUI.CONN_ERROR', 'http', id(self),
'socket error')
break
count = count + 1
headers = self.read_header()
#print '\n'.join (headers) + '\n\n'
request = http_request(self, request_line, headers)
request.read_body()
if request._error:
# Bad Request
request.error(400)
return
else:
try:
try:
handler = self.pick_handler(handlers, request)
if handler:
handler.handle_request(request)
else:
self.not_found(request)
if not request._done:
request.done()
except OSError, err:
if err[0] == errno.EPIPE:
pass # ignore broken pipe error
else:
raise # process exception in outer try
# These exceptions are used inside the coro
# stuff and shouldn't be thrown away
except (coro.TimeoutError, coro.Interrupted):
raise
except:
tb = coro.compact_traceback()
## sys.stderr.write (repr(tb))
request.error(500, tb)
qlog.write('COMMON.APP_FAILURE',
tb + ' request: ' + ` request `)
tb = None
if request._close:
# ok, this gets interesting. the connection needs to close
# here. the finally clause below isn't getting hit because
# the session and client are running in the same coroutine.
# that's bad, I think.
conn.close()
break
# this should be a policy decision of the owner of logfp
# self.logfp.flush()
except read_stream.BufferOverflow:
# Indicates a request header that exceeded the line
# buffer, which may indicate an attack on the server.
# We just close the connection without a response.
# TODO:lrosenstein - log this since it may be an attack?
qlog.write('WEBUI.CONN_ERROR', 'http', id(self),
'line buffer limit exceeded')
pass
except sslip.Error, why:
# Most likely a problem with SSL negotiation
qlog.write('WEBUI.CONN_ERROR', 'https', id(self), why[1])
pass
except OSError, err:
# We got some kind of I/O error that wasn't handled
# elsewhere. Since this seem to happen because the
# client closed the connection, it is safe to ignore
# the exception.
qlog.write('WEBUI.CONN_ERROR', 'http', id(self),
'OS error %s' % str(err[1]))
pass
