3 # sfi -- slice-based facility interface
9 from types import StringTypes, ListType
10 from optparse import OptionParser
12 from sfa.trust.certificate import Keypair, Certificate
13 from sfa.trust.credential import Credential
14 from sfa.util.geniclient import GeniClient
15 from sfa.util.record import *
16 from sfa.util.rspec import RSpec
17 from sfa.util.xmlrpcprotocol import ServerException
18 import sfa.util.xmlrpcprotocol as xmlrpcprotocol
19 from sfa.util.config import Config
30 def create_cmd_parser(self,command, additional_cmdargs = None):
37 "aggregates": "[name]",
38 "registries": "[name]",
40 "resources": "[name]",
41 "create": "name rspec",
49 if additional_cmdargs:
50 cmdargs.update(additional_cmdargs)
52 if command not in cmdargs:
53 print "Invalid command\n"
55 for key in cmdargs.keys():
60 parser = OptionParser(usage="sfi [sfi_options] %s [options] %s" \
61 % (command, cmdargs[command]))
63 if command in ("resources"):
64 parser.add_option("-f", "--format", dest="format",type="choice",
65 help="display format ([xml]|dns|ip)",default="xml",
66 choices=("xml","dns","ip"))
67 parser.add_option("-a", "--aggregate", dest="aggregate",
68 default=None, help="aggregate hrn")
70 if command in ("create"):
71 parser.add_option("-a", "--aggregate", dest="aggregate",default=None,
74 if command in ("list", "show", "remove"):
75 parser.add_option("-t", "--type", dest="type",type="choice",
76 help="type filter ([all]|user|slice|sa|ma|node|aggregate)",
77 choices=("all","user","slice","sa","ma","node","aggregate"),
80 if command in ("resources", "show", "list"):
81 parser.add_option("-o", "--output", dest="file",
82 help="output XML to file", metavar="FILE", default=None)
84 if command in ("show", "list"):
85 parser.add_option("-f", "--format", dest="format", type="choice",
86 help="display format ([text]|xml)",default="text",
87 choices=("text","xml"))
89 if command in ("delegate"):
90 parser.add_option("-u", "--user",
91 action="store_true", dest="delegate_user", default=False,
92 help="delegate user credential")
93 parser.add_option("-s", "--slice", dest="delegate_slice",
94 help="delegate slice credential", metavar="HRN", default=None)
98 def create_parser(self):
100 # Generate command line parser
101 parser = OptionParser(usage="sfi [options] command [command_options] [command_args]",
102 description="Commands: gid,list,show,remove,add,update,nodes,slices,resources,create,delete,start,stop,reset")
103 parser.add_option("-r", "--registry", dest="registry",
104 help="root registry", metavar="URL", default=None)
105 parser.add_option("-s", "--slicemgr", dest="sm",
106 help="slice manager", metavar="URL", default=None)
107 default_sfi_dir=os.path.expanduser("~/.sfi/")
108 parser.add_option("-d", "--dir", dest="sfi_dir",
109 help="config & working directory - default is " + default_sfi_dir,
110 metavar="PATH", default = default_sfi_dir)
111 parser.add_option("-u", "--user", dest="user",
112 help="user name", metavar="HRN", default=None)
113 parser.add_option("-a", "--auth", dest="auth",
114 help="authority name", metavar="HRN", default=None)
115 parser.add_option("-v", "--verbose",
116 action="store_true", dest="verbose", default=False,
118 parser.add_option("-p", "--protocol",
119 dest="protocol", default="xmlrpc",
120 help="RPC protocol (xmlrpc or soap)")
121 parser.add_option("-k", "--hashrequest",
122 action="store_true", dest="hashrequest", default=False,
123 help="Create a hash of the request that will be authenticated on the server")
124 parser.disable_interspersed_args()
130 # Establish Connection to SliceMgr and Registry Servers
132 def set_servers(self):
133 config_file = self.options.sfi_dir + os.sep + "sfi_config"
135 config = Config (config_file)
137 print "Failed to read configuration file",config_file
138 print "Make sure to remove the export clauses and to add quotes"
139 if not self.options.verbose:
140 print "Re-run with -v for more details"
142 traceback.print_exc()
147 if (self.options.sm is not None):
148 sm_url = self.options.sm
149 elif hasattr(config,"SFI_SM"):
150 sm_url = config.SFI_SM
152 print "You need to set e.g. SFI_SM='http://your.slicemanager.url:12347/' in %s"%config_file
156 if (self.options.registry is not None):
157 reg_url = self.options.registry
158 elif hasattr(config,"SFI_REGISTRY"):
159 reg_url = config.SFI_REGISTRY
161 print "You need to set e.g. SFI_REGISTRY='http://your.registry.url:12345/' in %s"%config_file
165 if (self.options.user is not None):
166 self.user = self.options.user
167 elif hasattr(config,"SFI_USER"):
168 self.user = config.SFI_USER
170 print "You need to set e.g. SFI_USER='plc.princeton.username' in %s"%config_file
174 if (self.options.auth is not None):
175 self.authority = self.options.auth
176 elif hasattr(config,"SFI_AUTH"):
177 self.authority = config.SFI_AUTH
179 print "You need to set e.g. SFI_AUTH='plc.princeton' in %s"%config_file
185 if self.options.verbose :
186 print "Contacting Slice Manager at:", sm_url
187 print "Contacting Registry at:", reg_url
189 # Get key and certificate
190 key_file = self.get_key_file()
191 cert_file = self.get_cert_file(key_file)
192 self.key = Keypair(filename=key_file)
193 self.key_file = key_file
194 self.cert_file = cert_file
195 self.cert = Certificate(filename=cert_file)
196 # Establish connection to server(s)
197 #self.slicemgr = GeniClient(sm_url, key_file, cert_file, self.options.protocol)
198 #self.registry = GeniClient(reg_url, key_file, cert_file, self.options.protocol)
199 self.registry = xmlrpcprotocol.get_server(reg_url, key_file, cert_file)
200 self.slicemgr = xmlrpcprotocol.get_server(sm_url, key_file, cert_file)
204 # Get various credential and spec files
206 # Establishes limiting conventions
207 # - conflates MAs and SAs
208 # - assumes last token in slice name is unique
210 # Bootstraps credentials
211 # - bootstrap user credential from self-signed certificate
212 # - bootstrap authority credential from user credential
213 # - bootstrap slice credential from user credential
216 def get_leaf(self,name):
217 parts = name.split(".")
220 def get_key_file(self):
221 file = os.path.join(self.options.sfi_dir, self.get_leaf(self.user) + ".pkey")
222 if (os.path.isfile(file)):
225 print "Key file", file, "does not exist"
229 def get_cert_file(self,key_file):
231 file = os.path.join(self.options.sfi_dir, self.get_leaf(self.user) + ".cert")
232 if (os.path.isfile(file)):
235 k = Keypair(filename = key_file)
236 cert = Certificate(subject=self.user)
238 cert.set_issuer(k, self.user)
240 if self.options.verbose :
241 print "Writing self-signed certificate to", file
242 cert.save_to_file(file)
246 file = os.path.join(self.options.sfi_dir, self.get_leaf(self.user) + ".gid")
247 if (os.path.isfile(file)):
248 gid = GID(filename=file)
251 cert_str = self.cert.save_to_string(save_parents=True)
254 request_hash = self.key.compute_hash([cert_str, self.user, "user"])
255 gid_str = self.registry.get_gid(cert_str, self.user, "user", request_hash)
256 gid = GID(string=gid_str)
257 if self.options.verbose:
258 print "Writing user gid to", file
259 gid.save_to_file(file, save_parents=True)
262 def get_user_cred(self):
263 file = os.path.join(self.options.sfi_dir, self.get_leaf(self.user) + ".cred")
264 if (os.path.isfile(file)):
265 user_cred = Credential(filename=file)
268 # bootstrap user credential
269 cert_string = self.cert.save_to_string(save_parents=True)
272 request_hash = self.key.compute_hash([cert_string, "user", self.user])
273 user_cred = self.registry.get_self_credential(cert_string, "user", self.user, request_hash)
275 cred = Credential(string=user_cred)
276 cred.save_to_file(file, save_parents=True)
277 if self.options.verbose:
278 print "Writing user credential to", file
281 print "Failed to get user credential"
284 def get_auth_cred(self):
285 if not self.authority:
286 print "no authority specified. Use -a or set SF_AUTH"
289 file = os.path.join(self.options.sfi_dir, self.get_leaf("authority") +".cred")
290 if (os.path.isfile(file)):
291 auth_cred = Credential(filename=file)
294 # bootstrap authority credential from user credential
295 user_cred = self.get_user_cred().save_to_string(save_parents=True)
298 request_hash = self.key.compute_hash([user_cred, "authority", self.authority])
299 auth_cred = self.registry.get_credential(user_cred, "authority", self.authority, request_hash)
301 cred = Credential(string=auth_cred)
302 cred.save_to_file(file, save_parents=True)
303 if self.options.verbose:
304 print "Writing authority credential to", file
307 print "Failed to get authority credential"
310 def get_slice_cred(self,name):
311 file = os.path.join(self.options.sfi_dir, "slice_" + self.get_leaf(name) + ".cred")
312 if (os.path.isfile(file)):
313 slice_cred = Credential(filename=file)
316 # bootstrap slice credential from user credential
317 user_cred = self.get_user_cred().save_to_string(save_parents=True)
318 arg_list = [user_cred, "slice", name]
321 request_hash = self.key.compute_hash(arg_list)
322 slice_cred_str = self.registry.get_credential(user_cred, "slice", name, request_hash)
324 slice_cred = Credential(string=slice_cred_str)
325 slice_cred.save_to_file(file, save_parents=True)
326 if self.options.verbose:
327 print "Writing slice credential to", file
330 print "Failed to get slice credential"
333 def delegate_cred(self,cred, hrn, type = 'authority'):
334 # the gid and hrn of the object we are delegating
335 object_gid = cred.get_gid_object()
336 object_hrn = object_gid.get_hrn()
337 cred.set_delegate(True)
338 if not cred.get_delegate():
339 raise Exception, "Error: Object credential %(object_hrn)s does not have delegate bit set" % locals()
342 records = self.registry.resolve(cred, hrn)
343 records = self.filter_records(type, records)
346 raise Exception, "Error: Didn't find a %(type)s record for %(hrn)s" % locals()
348 # the gid of the user who will be delegated too
349 delegee_gid = records[0].get_gid_object()
350 delegee_hrn = delegee_gid.get_hrn()
352 # the key and hrn of the user who will be delegating
353 user_key = Keypair(filename = self.get_key_file())
354 user_hrn = cred.get_gid_caller().get_hrn()
356 dcred = Credential(subject=object_hrn + " delegated to " + delegee_hrn)
357 dcred.set_gid_caller(delegee_gid)
358 dcred.set_gid_object(object_gid)
359 dcred.set_privileges(cred.get_privileges())
360 dcred.set_delegate(True)
361 dcred.set_pubkey(object_gid.get_pubkey())
362 dcred.set_issuer(user_key, user_hrn)
363 dcred.set_parent(cred)
369 def get_rspec_file(self,rspec):
370 if (os.path.isabs(rspec)):
373 file = os.path.join(self.options.sfi_dir, rspec)
374 if (os.path.isfile(file)):
377 print "No such rspec file", rspec
380 def get_record_file(self,record):
381 if (os.path.isabs(record)):
384 file = os.path.join(self.options.sfi_dir, record)
385 if (os.path.isfile(file)):
388 print "No such registry record file", record
391 def load_publickey_string(self,fn):
393 key_string = f.read()
395 # if the filename is a private key file, then extract the public key
396 if "PRIVATE KEY" in key_string:
397 outfn = tempfile.mktemp()
398 cmd = "openssl rsa -in " + fn + " -pubout -outform PEM -out " + outfn
401 key_string = f.read()
407 # Following functions implement the commands
409 # Registry-related commands
412 def dispatch(self,command, cmd_opts, cmd_args):
413 getattr(self,command)(cmd_opts, cmd_args)
415 def gid(self, opts, args):
417 print "GID: %s" % (gid.save_to_string(save_parents=True))
420 # list entires in named authority registry
421 def list(self,opts, args):
422 user_cred = self.get_user_cred().save_to_string(save_parents=True)
426 request_hash = self.key.compute_hash([user_cred, hrn])
428 list = self.registry.list(user_cred, hrn, request_hash)
430 raise Exception, "Not enough parameters for the 'list' command"
432 # filter on person, slice, site, node, etc.
433 # THis really should be in the self.filter_records funct def comment...
434 list = self.filter_records(opts.type, list)
436 print "%s (%s)" % (record['hrn'], record['type'])
438 self.save_records_to_file(opts.file, list)
441 # show named registry record
442 def show(self,opts, args):
443 user_cred = self.get_user_cred().save_to_string(save_parents=True)
447 request_hash = self.key.compute_hash([user_cred, hrn])
448 records = self.registry.resolve(user_cred, hrn, request_hash)
449 records = self.filter_records(opts.type, records)
451 print "No record of type", opts.type
452 for record in records:
453 if record['type'] in ['user']:
454 record = UserRecord(dict = record)
455 elif record['type'] in ['slice']:
456 record = SliceRecord(dict = record)
457 elif record['type'] in ['node']:
458 record = NodeRecord(dict = record)
459 elif record['type'] in ['authority', 'ma', 'sa']:
460 record = AuthorityRecord(dict = record)
462 record = GeniRecord(dict = record)
463 if (opts.format=="text"):
466 print record.save_to_string()
469 self.save_records_to_file(opts.file, records)
472 def delegate(self,opts, args):
473 user_cred = self.get_user_cred()
474 if opts.delegate_user:
475 object_cred = user_cred
476 elif opts.delegate_slice:
477 object_cred = self.get_slice_cred(opts.delegate_slice)
479 print "Must specify either --user or --slice <hrn>"
482 # the gid and hrn of the object we are delegating
483 object_gid = object_cred.get_gid_object()
484 object_hrn = object_gid.get_hrn()
486 if not object_cred.get_delegate():
487 print "Error: Object credential", object_hrn, "does not have delegate bit set"
490 records = self.registry.resolve(user_cred, args[0])
491 records = self.filter_records("user", records)
494 print "Error: Didn't find a user record for", args[0]
497 # the gid of the user who will be delegated too
498 delegee_gid = records[0].get_gid_object()
499 delegee_hrn = delegee_gid.get_hrn()
501 # the key and hrn of the user who will be delegating
502 user_key = Keypair(filename = self.get_key_file())
503 user_hrn = user_cred.get_gid_caller().get_hrn()
505 dcred = Credential(subject=object_hrn + " delegated to " + delegee_hrn)
506 dcred.set_gid_caller(delegee_gid)
507 dcred.set_gid_object(object_gid)
508 dcred.set_privileges(object_cred.get_privileges())
509 dcred.set_delegate(True)
510 dcred.set_pubkey(object_gid.get_pubkey())
511 dcred.set_issuer(user_key, user_hrn)
512 dcred.set_parent(object_cred)
516 if opts.delegate_user:
517 dest_fn = os.path.join(self.options.sfi_dir, self.get_leaf(delegee_hrn) + "_"
518 + self.get_leaf(object_hrn) + ".cred")
519 elif opts.delegate_slice:
520 dest_fn = os.path_join(self.options.sfi_dir, self.get_leaf(delegee_hrn) + "_slice_"
521 + self.get_leaf(object_hrn) + ".cred")
523 dcred.save_to_file(dest_fn, save_parents = True)
525 print "delegated credential for", object_hrn, "to", delegee_hrn, "and wrote to", dest_fn
527 # removed named registry record
528 # - have to first retrieve the record to be removed
529 def remove(self,opts, args):
530 auth_cred = self.get_auth_cred().save_to_string(save_parents=True)
537 arg_list = [auth_cred, type, hrn]
538 request_hash = self.key.compute_hash(arg_list)
539 return self.registry.remove(auth_cred, type, hrn, request_hash)
541 # add named registry record
542 def add(self,opts, args):
543 auth_cred = self.get_auth_cred().save_to_string(save_parents=True)
544 record_filepath = args[0]
545 rec_file = self.get_record_file(record_filepath)
546 record = self.load_record_from_file(rec_file).as_dict()
549 arg_list = [auth_cred]
550 request_hash = self.key.compute_hash(arg_list)
551 return self.registry.register(auth_cred, record, request_hash)
553 # update named registry entry
554 def update(self,opts, args):
555 user_cred = self.get_user_cred()
556 rec_file = self.get_record_file(args[0])
557 record = self.load_record_from_file(rec_file)
558 if record['type'] == "user":
559 if record.get_name() == user_cred.get_gid_object().get_hrn():
560 cred = user_cred.save_to_string(save_parents=True)
562 cred = self.get_auth_cred().save_to_string(save_parents=True)
563 elif record['type'] in ["slice"]:
565 cred = self.get_slice_cred(record.get_name()).save_to_string(save_parents=True)
566 except ServerException, e:
567 # XXX smbaker -- once we have better error return codes, update this
568 # to do something better than a string compare
569 if "Permission error" in e.args[0]:
570 cred = self.get_auth_cred().save_to_string(save_parents=True)
573 elif record.get_type() in ["authority"]:
574 cred = self.get_auth_cred().save_to_string(save_parents=True)
575 elif record.get_type() == 'node':
576 cred = self.get_auth_cred().save_to_string(save_parents=True)
578 raise "unknown record type" + record.get_type()
579 record = record.as_dict()
583 request_hash = self.key.compute_hash(arg_list)
584 return self.registry.update(cred, record, request_hash)
587 def aggregates(self, opts, args):
588 user_cred = self.get_user_cred().save_to_string(save_parents=True)
594 arg_list = [user_cred, hrn]
595 request_hash = self.key.compute_hash(arg_list)
596 result = self.registry.get_aggregates(user_cred, hrn, request_hash)
597 self.display_list(result)
600 def registries(self, opts, args):
601 user_cred = self.get_user_cred().save_to_string(save_parents=True)
607 arg_list = [user_cred, hrn]
608 request_hash = self.key.compute_hash(arg_list)
609 result = self.registry.get_registries(user_cred, hrn, request_hash)
610 self.display_list(result)
614 # Slice-related commands
617 # list available nodes -- use 'resources' w/ no argument instead
619 # list instantiated slices
620 def slices(self,opts, args):
621 user_cred = self.get_user_cred().save_to_string(save_parents=True)
624 arg_list = [user_cred]
625 request_hash = self.key.compute_hash(arg_list)
626 results = self.slicemgr.get_slices(user_cred, request_hash)
627 self.display_list(results)
630 # show rspec for named slice
631 def resources(self,opts, args):
632 user_cred = self.get_user_cred().save_to_string(save_parents=True)
633 server = self.slicemgr
635 agg_hrn = opts.aggregate
636 arg_list = [user_cred, arg_hrn]
637 request_hash = self.key.compute_hash(arg_list)
638 aggregates = self.registry.get_aggregates(user_cred, agg_hrn, request_hash)
640 raise Exception, "No such aggregate %s" % agg_hrn
641 aggregate = aggregates[0]
642 url = "http://%s:%s" % (aggregate['addr'], aggregate['port'])
643 server = xmlrpcprotocol.get_server(url, self.key_file, self.cert_file)
645 cred = self.get_slice_cred(args[0]).save_to_string(save_parents=True)
653 arg_list = [cred, hrn]
654 request_hash = self.key.compute_hash(arg_list)
655 result = server.get_resources(cred, hrn, request_hash)
658 self.display_rspec(result, format)
659 if (opts.file is not None):
660 self.save_rspec_to_file(result, opts.file)
663 # created named slice with given rspec
664 def create(self,opts, args):
666 user_cred = self.get_user_cred()
667 slice_cred = self.get_slice_cred(slice_hrn).save_to_string(save_parents=True)
668 rspec_file = self.get_rspec_file(args[1])
669 rspec=open(rspec_file).read()
670 server = self.slicemgr
672 aggregates = self.registry.get_aggregates(user_cred, opts.aggregate)
674 raise Exception, "No such aggregate %s" % opts.aggregate
675 aggregate = aggregates[0]
676 url = "http://%s:%s" % (aggregate['addr'], aggregate['port'])
677 server = GeniClient(url, self.key_file, self.cert_file, self.options.protocol)
680 arg_list = [slice_cred, slice_hrn, rspec]
681 request_hash = self.key.compute_hash(arg_list)
682 return server.create_slice(slice_cred, slice_hrn, rspec, request_hash)
685 def delete(self,opts, args):
687 slice_cred = self.get_slice_cred(slice_hrn).save_to_string(save_parents=True)
690 arg_list = [slice_cred, slice_hrn]
691 request_hash = self.key.compute_hash(arg_list)
692 return self.slicemgr.delete_slice(slice_cred, slice_hrn, request_hash)
695 def start(self,opts, args):
697 slice_cred = self.get_slice_cred(args[0])
700 arg_list = [slice_cred, slice_hrn]
701 request_hash = self.key.compute_hash(arg_list)
702 return self.slicemgr.start_slice(slice_cred, slice_hrn, request_hash)
705 def stop(self,opts, args):
707 slice_cred = self.get_slice_cred(args[0]).save_to_string(save_parents=True)
710 arg_list = [slice_cred, slice_hrn]
711 request_hash = self.key.compute_hash(arg_list)
712 return self.slicemgr.stop_slice(slice_cred, slice_hrn, request_hash)
715 def reset(self,opts, args):
717 slice_cred = self.get_slice_cred(args[0]).save_to_string(save_parents=True)
720 arg_list = [slice_cred, slice_hrn]
721 request_hash = self.key.compute_hash(arg_list)
722 return self.slicemgr.reset_slice(slice_cred, slice_hrn, request_hash)
726 # Display, Save, and Filter RSpecs and Records
727 # - to be replace by EMF-generated routines
731 def display_rspec(self,rspec, format = 'rspec'):
732 if format in ['dns']:
734 spec.parseString(rspec)
736 nodespecs = spec.getDictsByTagName('NodeSpec')
737 for nodespec in nodespecs:
738 if nodespec.has_key('name') and nodespec['name']:
739 if isinstance(nodespec['name'], ListType):
740 hostnames.extend(nodespec['name'])
741 elif isinstance(nodespec['name'], StringTypes):
742 hostnames.append(nodespec['name'])
744 elif format in ['ip']:
746 spec.parseString(rspec)
748 ifspecs = spec.getDictsByTagName('IfSpec')
749 for ifspec in ifspecs:
750 if ifspec.has_key('addr') and ifspec['addr']:
751 ips.append(ifspec['addr'])
759 def display_list(self,results):
760 for result in results:
763 def save_rspec_to_file(self,rspec, filename):
764 if not filename.startswith(os.sep):
765 filename = self.options.sfi_dir + filename
766 if not filename.endswith(".rspec"):
767 filename = filename + ".rspec"
769 f = open(filename, 'w')
774 def display_records(self,recordList, dump = False):
775 ''' Print all fields in the record'''
776 for record in recordList:
777 self.display_record(record, dump)
779 def display_record(self,record, dump = False):
783 info = record.getdict()
784 print "%s (%s)" % (info['hrn'], info['type'])
787 def filter_records(self,type, records):
788 filtered_records = []
789 for record in records:
790 if (record['type'] == type) or (type == "all"):
791 filtered_records.append(record)
792 return filtered_records
794 def save_records_to_file(self,filename, recordList):
796 for record in recordList:
798 self.save_record_to_file(filename + "." + str(index), record)
800 self.save_record_to_file(filename, record)
803 def save_record_to_file(self,filename, record):
804 if record['type'] in ['user']:
805 record = UserRecord(dict = record)
806 elif record['type'] in ['slice']:
807 record = SliceRecord(dict = record)
808 elif record['type'] in ['node']:
809 record = NodeRecord(dict = record)
810 elif record['type'] in ['authority', 'ma', 'sa']:
811 record = AuthorityRecord(dict = record)
813 record = GeniRecord(dict = record)
814 if not filename.startswith(os.sep):
815 filename = self.options.sfi_dir + filename
816 str = record.save_to_string()
817 file(filename, "w").write(str)
820 def load_record_from_file(self,filename):
821 str = file(filename, "r").read()
822 record = GeniRecord(string=str)
826 # Main: parse arguments and dispatch to command
829 parser = self.create_parser()
830 (options, args) = parser.parse_args()
831 self.options = options
833 if options.hashrequest:
834 self.hashrequest=True
837 print "No command given. Use -h for help."
841 (cmd_opts, cmd_args) = self.create_cmd_parser(command).parse_args(args[1:])
842 if self.options.verbose :
843 print "Registry %s, sm %s, dir %s, user %s, auth %s" % (options.registry, options.sm,
844 options.sfi_dir, options.user,
846 print "Command %s" %command
847 if command in ("resources"):
848 print "resources cmd_opts %s" %cmd_opts.format
849 elif command in ("list","show","remove"):
850 print "cmd_opts.type %s" %cmd_opts.type
851 print "cmd_args %s" %cmd_args
856 self.dispatch(command, cmd_opts, cmd_args)
859 print "Command not found:", command
864 if __name__=="__main__":