<s> import socket <EOL> import subprocess <EOL> import urlparse <EOL> from flashproxy import reg <EOL> from flashproxy . util import parse_addr_spec , format_addr <EOL> DEFAULT_CLIENT_TRANSPORT = "<STR_LIT>" <EOL> def read_client_registrations ( body , defhost = None , defport = None ) : <EOL> """<STR_LIT>""" <EOL> for line in body . splitlines ( ) : <EOL> qs = urlparse . parse_qs ( line , keep_blank_values = True , strict_parsing = True ) <EOL> def get_unique ( key , default = None ) : <EOL> try : <EOL> vals = qs [ key ] <EOL> except KeyError : <EOL> if default is None : <EOL> raise ValueError ( "<STR_LIT>" % key ) <EOL> vals = ( default , ) <EOL> if len ( vals ) != <NUM_LIT:1> : <EOL> raise ValueError ( "<STR_LIT>" % key ) <EOL> return vals [ <NUM_LIT:0> ] <EOL> addr = parse_addr_spec ( get_unique ( "<STR_LIT>" ) , defhost , defport ) <EOL> transport = get_unique ( "<STR_LIT>" , DEFAULT_CLIENT_TRANSPORT ) <EOL> yield reg . Endpoint ( addr , transport ) <EOL> def skip_space ( pos , line ) : <EOL> """<STR_LIT>""" <EOL> begin = pos <EOL> while pos < len ( line ) and line [ pos ] == "<STR_LIT>" : <EOL> pos += <NUM_LIT:1> <EOL> return pos , pos - begin <EOL> TOKEN_CHARS = set ( "<STR_LIT>" ) <EOL> def get_token ( pos , line ) : <EOL> begin = pos <EOL> while pos < len ( line ) and line [ pos ] in TOKEN_CHARS : <EOL> pos += <NUM_LIT:1> <EOL> if begin == pos : <EOL> raise ValueError ( "<STR_LIT>" % pos ) <EOL> return pos , line [ begin : pos ] <EOL> def get_quoted_string ( pos , line ) : <EOL> chars = [ ] <EOL> if not ( pos < len ( line ) and line [ pos ] == '<STR_LIT:">' ) : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> pos += <NUM_LIT:1> <EOL> while pos < len ( line ) and line [ pos ] != '<STR_LIT:">' : <EOL> if line [ pos ] == '<STR_LIT:\\>' : <EOL> pos += <NUM_LIT:1> <EOL> if not ( pos < len ( line ) ) : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> chars . append ( line [ pos ] ) <EOL> pos += <NUM_LIT:1> <EOL> if not ( pos < len ( line ) and line [ pos ] == '<STR_LIT:">' ) : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> pos += <NUM_LIT:1> <EOL> return pos , "<STR_LIT>" . join ( chars ) <EOL> def parse_transaction ( line ) : <EOL> """<STR_LIT>""" <EOL> pos = <NUM_LIT:0> <EOL> pos , skipped = skip_space ( pos , line ) <EOL> pos , command = get_token ( pos , line ) <EOL> pairs = [ ] <EOL> while True : <EOL> pos , skipped = skip_space ( pos , line ) <EOL> if not ( pos < len ( line ) ) : <EOL> break <EOL> if skipped == <NUM_LIT:0> : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> pos , key = get_token ( pos , line ) <EOL> if not ( pos < len ( line ) and line [ pos ] == '<STR_LIT:=>' ) : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> pos += <NUM_LIT:1> <EOL> pos , value = get_quoted_string ( pos , line ) <EOL> pairs . append ( ( key , value ) ) <EOL> return command , tuple ( pairs ) <EOL> def param_first ( key , params ) : <EOL> """<STR_LIT>""" <EOL> for k , v in params : <EOL> if key == k : <EOL> return v <EOL> return None <EOL> def param_getlist ( key , params ) : <EOL> """<STR_LIT>""" <EOL> result = [ ] <EOL> for k , v in params : <EOL> if key == k : <EOL> result . append ( v ) <EOL> return result <EOL> def quote_string ( s ) : <EOL> chars = [ ] <EOL> for c in s : <EOL> if c == "<STR_LIT:\\>" : <EOL> c = "<STR_LIT>" <EOL> elif c == "<STR_LIT>" : <EOL> c = "<STR_LIT>" <EOL> chars . append ( c ) <EOL> return "<STR_LIT>" + "<STR_LIT>" . join ( chars ) + "<STR_LIT>" <EOL> def render_transaction ( command , * params ) : <EOL> parts = [ command ] <EOL> for key , value in params : <EOL> parts . append ( "<STR_LIT>" % ( key , quote_string ( value ) ) ) <EOL> return "<STR_LIT:U+0020>" . join ( parts ) <EOL> def fac_socket ( facilitator_addr ) : <EOL> return socket . create_connection ( facilitator_addr , <NUM_LIT:1.0> ) . makefile ( ) <EOL> def transact ( f , command , * params ) : <EOL> transaction = render_transaction ( command , * params ) <EOL> print >> f , transaction <EOL> f . flush ( ) <EOL> line = f . readline ( ) <EOL> if not ( len ( line ) > <NUM_LIT:0> and line [ - <NUM_LIT:1> ] == '<STR_LIT:\n>' ) : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> return parse_transaction ( line [ : - <NUM_LIT:1> ] ) <EOL> def put_reg ( facilitator_addr , client_addr , transport ) : <EOL> """<STR_LIT>""" <EOL> f = fac_socket ( facilitator_addr ) <EOL> params = [ ( "<STR_LIT>" , format_addr ( client_addr ) ) ] <EOL> params . append ( ( "<STR_LIT>" , transport ) ) <EOL> try : <EOL> command , params = transact ( f , "<STR_LIT>" , * params ) <EOL> finally : <EOL> f . close ( ) <EOL> return command == "<STR_LIT:OK>" <EOL> def get_reg ( facilitator_addr , proxy_addr , proxy_transport_list ) : <EOL> """<STR_LIT>""" <EOL> f = fac_socket ( facilitator_addr ) <EOL> transports = [ ( "<STR_LIT>" , tp ) for tp in proxy_transport_list ] <EOL> try : <EOL> command , params = transact ( f , "<STR_LIT:GET>" , ( "<STR_LIT>" , format_addr ( proxy_addr ) ) , * transports ) <EOL> finally : <EOL> f . close ( ) <EOL> response = { } <EOL> check_back_in = param_first ( "<STR_LIT>" , params ) <EOL> if check_back_in is not None : <EOL> try : <EOL> float ( check_back_in ) <EOL> except ValueError : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> response [ "<STR_LIT>" ] = check_back_in <EOL> if command == "<STR_LIT>" : <EOL> response [ "<STR_LIT>" ] = "<STR_LIT>" <EOL> return response <EOL> elif command == "<STR_LIT:OK>" : <EOL> client_spec = param_first ( "<STR_LIT>" , params ) <EOL> client_transport = param_first ( "<STR_LIT>" , params ) <EOL> relay_spec = param_first ( "<STR_LIT>" , params ) <EOL> relay_transport = param_first ( "<STR_LIT>" , params ) <EOL> if not client_spec : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> if not client_transport : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> if not relay_spec : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> if not relay_transport : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> client = parse_addr_spec ( client_spec ) <EOL> relay = parse_addr_spec ( relay_spec ) <EOL> response [ "<STR_LIT>" ] = format_addr ( client ) <EOL> response [ "<STR_LIT>" ] = client_transport <EOL> response [ "<STR_LIT>" ] = format_addr ( relay ) <EOL> response [ "<STR_LIT>" ] = relay_transport <EOL> return response <EOL> else : <EOL> raise ValueError ( "<STR_LIT>" ) <EOL> def put_reg_proc ( args , data ) : <EOL> """<STR_LIT>""" <EOL> p = subprocess . Popen ( args , stdin = subprocess . PIPE ) <EOL> stdout , stderr = p . communicate ( data ) <EOL> return p . returncode == <NUM_LIT:0> </s>
