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source: fedd/federation/emulab_access.py @ cd06678

axis_examplecompt_changesinfo-opsversion-3.01version-3.02

Last change on this file since cd06678 was cd06678, checked in by Ted Faber <faber@…>, 15 years ago
Handle replayed StartSegment? calls. SSL sometimes kills the response and this is needed to get the response to the controller w/o redoing the allocation
Property mode set to `100644`
File size: 55.7 KB

Line
1	#!/usr/local/bin/python
2
3	import os,sys
4	import stat # for chmod constants
5	import re
6	import string
7	import copy
8	import pickle
9	import logging
10	import subprocess
11
12	from threading import *
13	from M2Crypto.SSL import SSLError
14
15	from util import *
16	from allocate_project import allocate_project_local, allocate_project_remote
17	from access_project import access_project
18	from fedid import fedid, generate_fedid
19	from authorizer import authorizer
20	from service_error import service_error
21	from remote_service import xmlrpc_handler, soap_handler, service_caller
22
23	import httplib
24	import tempfile
25	from urlparse import urlparse
26
27	import topdl
28	import list_log
29	import proxy_emulab_segment
30	import local_emulab_segment
31
32
33	# Make log messages disappear if noone configures a fedd logger
34	class nullHandler(logging.Handler):
35	def emit(self, record): pass
36
37	fl = logging.getLogger("fedd.access")
38	fl.addHandler(nullHandler())
39
40	class access:
41	"""
42	The implementation of access control based on mapping users to projects.
43
44	Users can be mapped to existing projects or have projects created
45	dynamically. This implements both direct requests and proxies.
46	"""
47
48	class parse_error(RuntimeError): pass
49
50
51	proxy_RequestAccess= service_caller('RequestAccess')
52	proxy_ReleaseAccess= service_caller('ReleaseAccess')
53
54	def __init__(self, config=None, auth=None):
55	"""
56	Initializer. Pulls parameters out of the ConfigParser's access section.
57	"""
58
59	def software_list(v):
60	l = [ ]
61	if v:
62	ps = v.split(" ")
63	while len(ps):
64	loc, file = ps[0:2]
65	del ps[0:2]
66	l.append((loc, file))
67	return l
68
69
70	# Make sure that the configuration is in place
71	if not config:
72	raise RunTimeError("No config to fedd.access")
73
74	self.project_priority = config.getboolean("access", "project_priority")
75	self.allow_proxy = config.getboolean("access", "allow_proxy")
76
77	self.boss = config.get("access", "boss")
78	self.ops = config.get("access", "ops")
79	self.domain = config.get("access", "domain")
80	self.fileserver = config.get("access", "fileserver")
81	self.eventserver = config.get("access", "eventserver")
82	self.certdir = config.get("access","certdir")
83	self.userconfdir = config.get("access","userconfdir")
84	self.userconfcmd = config.get("access","userconfcmd")
85	self.userconfurl = config.get("access","userconfurl")
86	self.federation_software = config.get("access", "federation_software")
87	self.portal_software = config.get("access", "portal_software")
88	self.ssh_privkey_file = config.get("access","ssh_privkey_file")
89	self.ssh_pubkey_file = config.get("access","ssh_pubkey_file")
90	self.ssh_port = config.get("access","ssh_port") or "22"
91	self.create_debug = config.getboolean("access", "create_debug")
92	self.cleanup = not config.getboolean("access", "leave_tmpfiles")
93	self.access_type = config.get("access", "type")
94
95	self.federation_software = software_list(self.federation_software)
96	self.portal_software = software_list(self.portal_software)
97
98	self.access_type = self.access_type.lower()
99	if self.access_type == 'remote_emulab':
100	self.start_segment = proxy_emulab_segment.start_segment
101	self.stop_segment = proxy_emulab_segment.stop_segment
102	elif self.access_type == 'local_emulab':
103	self.start_segment = local_emulab_segment.start_segment
104	self.stop_segment = local_emulab_segment.stop_segment
105	else:
106	self.start_segment = None
107	self.stop_segment = None
108
109	self.attrs = { }
110	self.access = { }
111	self.restricted = [ ]
112	self.projects = { }
113	self.keys = { }
114	self.types = { }
115	self.allocation = { }
116	self.state = {
117	'projects': self.projects,
118	'allocation' : self.allocation,
119	'keys' : self.keys,
120	'types': self.types
121	}
122	self.log = logging.getLogger("fedd.access")
123	set_log_level(config, "access", self.log)
124	self.state_lock = Lock()
125	# XXX: Configurable
126	self.exports = set(('SMB', 'seer', 'tmcd', 'userconfig'))
127	self.imports = set(('SMB', 'seer', 'userconfig'))
128
129	if auth: self.auth = auth
130	else:
131	self.log.error(\
132	"[access]: No authorizer initialized, creating local one.")
133	auth = authorizer()
134
135	tb = config.get('access', 'testbed')
136	if tb: self.testbed = [ t.strip() for t in tb.split(',') ]
137	else: self.testbed = [ ]
138
139	if config.has_option("access", "accessdb"):
140	self.read_access(config.get("access", "accessdb"))
141
142	self.state_filename = config.get("access", "access_state")
143	self.read_state()
144
145	# Keep cert_file and cert_pwd coming from the same place
146	self.cert_file = config.get("access", "cert_file")
147	if self.cert_file:
148	self.sert_pwd = config.get("access", "cert_pw")
149	else:
150	self.cert_file = config.get("globals", "cert_file")
151	self.sert_pwd = config.get("globals", "cert_pw")
152
153	self.trusted_certs = config.get("access", "trusted_certs") or \
154	config.get("globals", "trusted_certs")
155
156	self.soap_services = {\
157	'RequestAccess': soap_handler("RequestAccess", self.RequestAccess),
158	'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess),
159	'StartSegment': soap_handler("StartSegment", self.StartSegment),
160	'TerminateSegment': soap_handler("TerminateSegment", self.TerminateSegment),
161	}
162	self.xmlrpc_services = {\
163	'RequestAccess': xmlrpc_handler('RequestAccess',
164	self.RequestAccess),
165	'ReleaseAccess': xmlrpc_handler('ReleaseAccess',
166	self.ReleaseAccess),
167	'StartSegment': xmlrpc_handler("StartSegment", self.StartSegment),
168	'TerminateSegment': xmlrpc_handler('TerminateSegment',
169	self.TerminateSegment),
170	}
171
172	self.call_SetValue = service_caller('SetValue')
173	self.call_GetValue = service_caller('GetValue')
174
175	if not config.has_option("allocate", "uri"):
176	self.allocate_project = \
177	allocate_project_local(config, auth)
178	else:
179	self.allocate_project = \
180	allocate_project_remote(config, auth)
181
182	# If the project allocator exports services, put them in this object's
183	# maps so that classes that instantiate this can call the services.
184	self.soap_services.update(self.allocate_project.soap_services)
185	self.xmlrpc_services.update(self.allocate_project.xmlrpc_services)
186
187
188	def read_access(self, config):
189	"""
190	Read a configuration file and set internal parameters.
191
192	The format is more complex than one might hope. The basic format is
193	attribute value pairs separated by colons(:) on a signle line. The
194	attributes in bool_attrs, emulab_attrs and id_attrs can all be set
195	directly using the name: value syntax. E.g.
196	boss: hostname
197	sets self.boss to hostname. In addition, there are access lines of the
198	form (tb, proj, user) -> (aproj, auser) that map the first tuple of
199	names to the second for access purposes. Names in the key (left side)
200	can include "<NONE> or <ANY>" to act as wildcards or to require the
201	fields to be empty. Similarly aproj or auser can be <SAME> or
202	<DYNAMIC> indicating that either the matching key is to be used or a
203	dynamic user or project will be created. These names can also be
204	federated IDs (fedid's) if prefixed with fedid:. Finally, the aproj
205	can be followed with a colon-separated list of node types to which that
206	project has access (or will have access if dynamic).
207	Testbed attributes outside the forms above can be given using the
208	format attribute: name value: value. The name is a single word and the
209	value continues to the end of the line. Empty lines and lines startin
210	with a # are ignored.
211
212	Parsing errors result in a self.parse_error exception being raised.
213	"""
214	lineno=0
215	name_expr = "["+string.ascii_letters + string.digits + "\.\-_]+"
216	fedid_expr = "fedid:[" + string.hexdigits + "]+"
217	key_name = "(<ANY>\|<NONE>\|"+fedid_expr + "\|"+ name_expr + ")"
218	access_proj = "(<DYNAMIC>(?::" + name_expr +")*\|"+ \
219	"<SAME>" + "(?::" + name_expr + ")*\|" + \
220	fedid_expr + "(?::" + name_expr + ")*\|" + \
221	name_expr + "(?::" + name_expr + ")*)"
222	access_name = "(<DYNAMIC>\|<SAME>\|" + fedid_expr + "\|"+ name_expr + ")"
223
224	restricted_re = re.compile("restricted:\s(.)", re.IGNORECASE)
225	attr_re = re.compile('attribute:\s([\._\-a-z0-9]+)\s+value:\s(.*)',
226	re.IGNORECASE)
227	access_re = re.compile('\('+key_name+'\s,\s'+key_name+'\s,\s'+
228	key_name+'\s\)\s->\s\('+access_proj + '\s,\s*' +
229	access_name + '\s,\s' + access_name + '\s*\)', re.IGNORECASE)
230
231	def parse_name(n):
232	if n.startswith('fedid:'): return fedid(hexstr=n[len('fedid:'):])
233	else: return n
234
235	def auth_name(n):
236	if isinstance(n, basestring):
237	if n =='<any>' or n =='<none>': return None
238	else: return unicode(n)
239	else:
240	return n
241
242	f = open(config, "r");
243	for line in f:
244	lineno += 1
245	line = line.strip();
246	if len(line) == 0 or line.startswith('#'):
247	continue
248
249	# Extended (attribute: x value: y) attribute line
250	m = attr_re.match(line)
251	if m != None:
252	attr, val = m.group(1,2)
253	self.attrs[attr] = val
254	continue
255
256	# Restricted entry
257	m = restricted_re.match(line)
258	if m != None:
259	val = m.group(1)
260	self.restricted.append(val)
261	continue
262
263	# Access line (t, p, u) -> (ap, cu, su) line
264	m = access_re.match(line)
265	if m != None:
266	access_key = tuple([ parse_name(x) for x in m.group(1,2,3)])
267	auth_key = tuple([ auth_name(x) for x in access_key])
268	aps = m.group(4).split(":");
269	if aps[0] == 'fedid:':
270	del aps[0]
271	aps[0] = fedid(hexstr=aps[0])
272
273	cu = parse_name(m.group(5))
274	su = parse_name(m.group(6))
275
276	access_val = (access_project(aps[0], aps[1:]),
277	parse_name(m.group(5)), parse_name(m.group(6)))
278
279	self.access[access_key] = access_val
280	self.auth.set_attribute(auth_key, "access")
281	continue
282
283	# Nothing matched to here: unknown line - raise exception
284	f.close()
285	raise self.parse_error("Unknown statement at line %d of %s" % \
286	(lineno, config))
287	f.close()
288
289	def get_users(self, obj):
290	"""
291	Return a list of the IDs of the users in dict
292	"""
293	if obj.has_key('user'):
294	return [ unpack_id(u['userID']) \
295	for u in obj['user'] if u.has_key('userID') ]
296	else:
297	return None
298
299	def write_state(self):
300	if self.state_filename:
301	try:
302	f = open(self.state_filename, 'w')
303	pickle.dump(self.state, f)
304	except IOError, e:
305	self.log.error("Can't write file %s: %s" % \
306	(self.state_filename, e))
307	except pickle.PicklingError, e:
308	self.log.error("Pickling problem: %s" % e)
309	except TypeError, e:
310	self.log.error("Pickling problem (TypeError): %s" % e)
311
312
313	def read_state(self):
314	"""
315	Read a new copy of access state. Old state is overwritten.
316
317	State format is a simple pickling of the state dictionary.
318	"""
319	if self.state_filename:
320	try:
321	f = open(self.state_filename, "r")
322	self.state = pickle.load(f)
323
324	self.allocation = self.state['allocation']
325	self.projects = self.state['projects']
326	self.keys = self.state['keys']
327	self.types = self.state['types']
328
329	self.log.debug("[read_state]: Read state from %s" % \
330	self.state_filename)
331	except IOError, e:
332	self.log.warning(("[read_state]: No saved state: " +\
333	"Can't open %s: %s") % (self.state_filename, e))
334	except EOFError, e:
335	self.log.warning(("[read_state]: " +\
336	"Empty or damaged state file: %s:") % \
337	self.state_filename)
338	except pickle.UnpicklingError, e:
339	self.log.warning(("[read_state]: No saved state: " + \
340	"Unpickling failed: %s") % e)
341
342	# Add the ownership attributes to the authorizer. Note that the
343	# indices of the allocation dict are strings, but the attributes are
344	# fedids, so there is a conversion.
345	for k in self.allocation.keys():
346	for o in self.allocation[k].get('owners', []):
347	self.auth.set_attribute(o, fedid(hexstr=k))
348	if self.allocation[k].has_key('userconfig'):
349	sfid = self.allocation[k]['userconfig']
350	fid = fedid(hexstr=sfid)
351	self.auth.set_attribute(fid, "/%s" % sfid)
352
353
354	def permute_wildcards(self, a, p):
355	"""Return a copy of a with various fields wildcarded.
356
357	The bits of p control the wildcards. A set bit is a wildcard
358	replacement with the lowest bit being user then project then testbed.
359	"""
360	if p & 1: user = ["<any>"]
361	else: user = a[2]
362	if p & 2: proj = "<any>"
363	else: proj = a[1]
364	if p & 4: tb = "<any>"
365	else: tb = a[0]
366
367	return (tb, proj, user)
368
369	def find_access(self, search):
370	"""
371	Search the access DB for a match on this tuple. Return the matching
372	access tuple and the user that matched.
373
374	NB, if the initial tuple fails to match we start inserting wildcards in
375	an order determined by self.project_priority. Try the list of users in
376	order (when wildcarded, there's only one user in the list).
377	"""
378	if self.project_priority: perm = (0, 1, 2, 3, 4, 5, 6, 7)
379	else: perm = (0, 2, 1, 3, 4, 6, 5, 7)
380
381	for p in perm:
382	s = self.permute_wildcards(search, p)
383	# s[2] is None on an anonymous, unwildcarded request
384	if s[2] != None:
385	for u in s[2]:
386	if self.access.has_key((s[0], s[1], u)):
387	return (self.access[(s[0], s[1], u)], u)
388	else:
389	if self.access.has_key(s):
390	return (self.access[s], None)
391	return None, None
392
393	def lookup_access(self, req, fid):
394	"""
395	Determine the allowed access for this request. Return the access and
396	which fields are dynamic.
397
398	The fedid is needed to construct the request
399	"""
400	user_re = re.compile("user:\s(.*)")
401	project_re = re.compile("project:\s(.*)")
402
403	# Search keys
404	tb = None
405	project = None
406	user = None
407	# Return values
408	rp = access_project(None, ())
409	ru = None
410
411	user = [ user_re.findall(x)[0] for x in req.get('credential', []) \
412	if user_re.match(x)]
413	project = [ project_re.findall(x)[0] \
414	for x in req.get('credential', []) \
415	if project_re.match(x)]
416
417	if len(project) == 1: project = project[0]
418	elif len(project) == 0: project = None
419	else:
420	raise service_error(service_error.req,
421	"More than one project credential")
422
423
424	user_fedids = [ u for u in user if isinstance(u, fedid)]
425	# Determine how the caller is representing itself. If its fedid shows
426	# up as a project or a singleton user, let that stand. If neither the
427	# usernames nor the project name is a fedid, the caller is a testbed.
428	if project and isinstance(project, fedid):
429	if project == fid:
430	# The caller is the project (which is already in the tuple
431	# passed in to the authorizer)
432	owners = user_fedids
433	owners.append(project)
434	else:
435	raise service_error(service_error.req,
436	"Project asserting different fedid")
437	else:
438	if fid not in user_fedids:
439	tb = fid
440	owners = user_fedids
441	owners.append(fid)
442	else:
443	if len(fedids) > 1:
444	raise service_error(service_error.req,
445	"User asserting different fedid")
446	else:
447	# Which is a singleton
448	owners = user_fedids
449	# Confirm authorization
450
451	for u in user:
452	self.log.debug("[lookup_access] Checking access for %s" % \
453	((tb, project, u),))
454	if self.auth.check_attribute((tb, project, u), 'access'):
455	self.log.debug("[lookup_access] Access granted")
456	break
457	else:
458	self.log.debug("[lookup_access] Access Denied")
459	else:
460	raise service_error(service_error.access, "Access denied")
461
462	# This maps a valid user to the Emulab projects and users to use
463	found, user_match = self.find_access((tb, project, user))
464
465	if found == None:
466	raise service_error(service_error.access,
467	"Access denied - cannot map access")
468
469	# resolve <dynamic> and <same> in found
470	dyn_proj = False
471	dyn_create_user = False
472	dyn_service_user = False
473
474	if found[0].name == "<same>":
475	if project != None:
476	rp.name = project
477	else :
478	raise service_error(\
479	service_error.server_config,
480	"Project matched <same> when no project given")
481	elif found[0].name == "<dynamic>":
482	rp.name = None
483	dyn_proj = True
484	else:
485	rp.name = found[0].name
486	rp.node_types = found[0].node_types;
487
488	if found[1] == "<same>":
489	if user_match == "<any>":
490	if user != None: rcu = user[0]
491	else: raise service_error(\
492	service_error.server_config,
493	"Matched <same> on anonymous request")
494	else:
495	rcu = user_match
496	elif found[1] == "<dynamic>":
497	rcu = None
498	dyn_create_user = True
499	else:
500	rcu = found[1]
501
502	if found[2] == "<same>":
503	if user_match == "<any>":
504	if user != None: rsu = user[0]
505	else: raise service_error(\
506	service_error.server_config,
507	"Matched <same> on anonymous request")
508	else:
509	rsu = user_match
510	elif found[2] == "<dynamic>":
511	rsu = None
512	dyn_service_user = True
513	else:
514	rsu = found[2]
515
516	return (rp, rcu, rsu), (dyn_create_user, dyn_service_user, dyn_proj),\
517	owners
518
519	def get_handler(self, path, fid):
520	self.log.info("Get handler %s %s" % (path, fid))
521	if self.auth.check_attribute(fid, path) and self.userconfdir:
522	return ("%s/%s" % (self.userconfdir, path), "application/binary")
523	else:
524	return (None, None)
525
526	def export_userconf(self, project):
527	dev_null = None
528	confid, confcert = generate_fedid("test", dir=self.userconfdir,
529	log=self.log)
530	conffilename = "%s/%s" % (self.userconfdir, str(confid))
531	cf = None
532	try:
533	cf = open(conffilename, "w")
534	os.chmod(conffilename, stat.S_IRUSR \| stat.S_IWUSR)
535	except IOError, e:
536	raise service_error(service_error.internal,
537	"Cannot create user configuration data")
538
539	try:
540	dev_null = open("/dev/null", "a")
541	except IOError, e:
542	self.log.error("export_userconf: can't open /dev/null: %s" % e)
543
544	cmd = "%s %s" % (self.userconfcmd, project)
545	conf = subprocess.call(cmd.split(" "),
546	stdout=cf, stderr=dev_null, close_fds=True)
547
548	self.auth.set_attribute(confid, "/%s" % str(confid))
549
550	return confid, confcert
551
552
553	def export_services(self, sreq, project, user):
554	exp = [ ]
555	state = { }
556	# XXX: Filthy shortcut here using http: so urlparse will give the right
557	# answers.
558	for s in sreq:
559	sname = s.get('name', '')
560	svis = s.get('visibility', '')
561	if svis == 'export':
562	if sname in self.exports:
563	outs = s.copy()
564	if sname == 'SMB':
565	outs = s.copy()
566	outs['server'] = "http://fs:139"
567	outs['fedAttr'] = [
568	{ 'attribute': 'SMBSHARE', 'value': 'USERS' },
569	{ 'attribute': 'SMBUSER', 'value': user },
570	{ 'attribute': 'SMBPROJ', 'value': project },
571	]
572	elif sname == 'seer':
573	outs['server'] = "http://control:16606"
574	elif sname == 'tmcd':
575	outs['server'] = "http://boss:7777"
576	elif sname == 'userconfig':
577	if self.userconfdir and self.userconfcmd \
578	and self.userconfurl:
579	cid, cert = self.export_userconf(project)
580	outs['server'] = "%s/%s" % \
581	(self.userconfurl, str(cid))
582	outs['fedAttr'] = [
583	{ 'attribute': 'cert', 'value': cert },
584	]
585	state['userconfig'] = unicode(cid)
586	exp.append(outs)
587	return (exp, state)
588
589	def build_response(self, alloc_id, ap, services):
590	"""
591	Create the SOAP response.
592
593	Build the dictionary description of the response and use
594	fedd_utils.pack_soap to create the soap message. ap is the allocate
595	project message returned from a remote project allocation (even if that
596	allocation was done locally).
597	"""
598	# Because alloc_id is already a fedd_services_types.IDType_Holder,
599	# there's no need to repack it
600	msg = {
601	'allocID': alloc_id,
602	'fedAttr': [
603	{ 'attribute': 'domain', 'value': self.domain } ,
604	{ 'attribute': 'project', 'value':
605	ap['project'].get('name', {}).get('localname', "???") },
606	]
607	}
608	if len(self.attrs) > 0:
609	msg['fedAttr'].extend(
610	[ { 'attribute': x, 'value' : y } \
611	for x,y in self.attrs.iteritems()])
612
613	if services:
614	msg['service'] = services
615	return msg
616
617	def RequestAccess(self, req, fid):
618	"""
619	Handle the access request. Proxy if not for us.
620
621	Parse out the fields and make the allocations or rejections if for us,
622	otherwise, assuming we're willing to proxy, proxy the request out.
623	"""
624
625	def gateway_hardware(h):
626	if h == 'GWTYPE': return self.attrs.get('connectorType', 'GWTYPE')
627	else: return h
628
629	# The dance to get into the request body
630	if req.has_key('RequestAccessRequestBody'):
631	req = req['RequestAccessRequestBody']
632	else:
633	raise service_error(service_error.req, "No request!?")
634
635	if req.has_key('destinationTestbed'):
636	dt = unpack_id(req['destinationTestbed'])
637
638	if dt == None or dt in self.testbed:
639	# Request for this fedd
640	found, dyn, owners = self.lookup_access(req, fid)
641	restricted = None
642	ap = None
643
644	# If this is a request to export a project and the access project
645	# is not the project to export, access denied.
646	if req.has_key('exportProject'):
647	ep = unpack_id(req['exportProject'])
648	if ep != found[0].name:
649	raise service_error(service_error.access,
650	"Cannot export %s" % ep)
651
652	# Check for access to restricted nodes
653	if req.has_key('resources') and req['resources'].has_key('node'):
654	resources = req['resources']
655	restricted = [ gateway_hardware(t) for n in resources['node'] \
656	if n.has_key('hardware') \
657	for t in n['hardware'] \
658	if gateway_hardware(t) \
659	in self.restricted ]
660	inaccessible = [ t for t in restricted \
661	if t not in found[0].node_types]
662	if len(inaccessible) > 0:
663	raise service_error(service_error.access,
664	"Access denied (nodetypes %s)" % \
665	str(', ').join(inaccessible))
666
667	# These were passed around before, but now are hidden from users
668	# and configurators alike, beyond a configuration file entry.
669	create_ssh = [ self.ssh_pubkey_file ]
670	service_ssh = [ self.ssh_pubkey_file ]
671
672	if len(create_ssh) > 0 and len(service_ssh) >0:
673	if dyn[1]:
674	# Compose the dynamic project request
675	# (only dynamic, dynamic currently allowed)
676	preq = { 'AllocateProjectRequestBody': \
677	{ 'project' : {\
678	'user': [ \
679	{ \
680	'access': [ { 'sshPubkey': s } \
681	for s in service_ssh ],
682	'role': "serviceAccess",\
683	}, \
684	{ \
685	'access': [ { 'sshPubkey': s } \
686	for s in create_ssh ],
687	'role': "experimentCreation",\
688	}, \
689	], \
690	}\
691	}\
692	}
693	if restricted != None and len(restricted) > 0:
694	preq['AllocateProjectRequestBody']['resources'] = \
695	{'node': [ { 'hardware' : [ h ] } \
696	for h in restricted ] }
697	ap = self.allocate_project.dynamic_project(preq)
698	else:
699	preq = {'StaticProjectRequestBody' : \
700	{ 'project': \
701	{ 'name' : { 'localname' : found[0].name },\
702	'user' : [ \
703	{\
704	'userID': { 'localname' : found[1] }, \
705	'access': [ { 'sshPubkey': s }
706	for s in create_ssh ],
707	'role': 'experimentCreation'\
708	},\
709	{\
710	'userID': { 'localname' : found[2] }, \
711	'access': [ { 'sshPubkey': s }
712	for s in service_ssh ],
713	'role': 'serviceAccess'\
714	},\
715	]}\
716	}\
717	}
718	if restricted != None and len(restricted) > 0:
719	preq['StaticProjectRequestBody']['resources'] = \
720	{'node': [ { 'hardware' : [ h ] } \
721	for h in restricted ] }
722	ap = self.allocate_project.static_project(preq)
723	else:
724	raise service_error(service_error.req,
725	"SSH access parameters required")
726	# keep track of what's been added
727	allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log)
728	aid = unicode(allocID)
729
730	self.state_lock.acquire()
731	self.allocation[aid] = { }
732	try:
733	pname = ap['project']['name']['localname']
734	except KeyError:
735	pname = None
736
737	if dyn[1]:
738	if not pname:
739	self.state_lock.release()
740	raise service_error(service_error.internal,
741	"Misformed allocation response?")
742	if self.projects.has_key(pname): self.projects[pname] += 1
743	else: self.projects[pname] = 1
744	self.allocation[aid]['project'] = pname
745	else:
746	# sproject is a static project associated with this allocation.
747	self.allocation[aid]['sproject'] = pname
748
749	if ap.has_key('resources'):
750	if not pname:
751	self.state_lock.release()
752	raise service_error(service_error.internal,
753	"Misformed allocation response?")
754	self.allocation[aid]['types'] = set()
755	nodes = ap['resources'].get('node', [])
756	for n in nodes:
757	for h in n.get('hardware', []):
758	if self.types.has_key((pname, h)):
759	self.types[(pname, h)] += 1
760	else:
761	self.types[(pname, h)] = 1
762	self.allocation[aid]['types'].add((pname,h))
763
764
765	self.allocation[aid]['keys'] = [ ]
766
767	try:
768	for u in ap['project']['user']:
769	uname = u['userID']['localname']
770	if u['role'] == 'experimentCreation':
771	self.allocation[aid]['user'] = uname
772	for k in [ k['sshPubkey'] for k in u['access'] \
773	if k.has_key('sshPubkey') ]:
774	kv = "%s:%s" % (uname, k)
775	if self.keys.has_key(kv): self.keys[kv] += 1
776	else: self.keys[kv] = 1
777	self.allocation[aid]['keys'].append((uname, k))
778	except KeyError:
779	self.state_lock.release()
780	raise service_error(service_error.internal,
781	"Misformed allocation response?")
782
783	self.allocation[aid]['owners'] = owners
784	services, svc_state = self.export_services(req.get('service',[]),
785	pname, uname)
786	# Store services state in global state
787	for k, v in svc_state.items():
788	self.allocation[aid][k] = v
789	self.write_state()
790	self.state_lock.release()
791	for o in owners:
792	self.auth.set_attribute(o, allocID)
793	try:
794	f = open("%s/%s.pem" % (self.certdir, aid), "w")
795	print >>f, alloc_cert
796	f.close()
797	except IOError, e:
798	raise service_error(service_error.internal,
799	"Can't open %s/%s : %s" % (self.certdir, aid, e))
800	resp = self.build_response({ 'fedid': allocID } , ap, services)
801	return resp
802	else:
803	if self.allow_proxy:
804	resp = self.proxy_RequestAccess.call_service(dt, req,
805	self.cert_file, self.cert_pwd,
806	self.trusted_certs)
807	if resp.has_key('RequestAccessResponseBody'):
808	return resp['RequestAccessResponseBody']
809	else:
810	return None
811	else:
812	raise service_error(service_error.access,
813	"Access proxying denied")
814
815	def ReleaseAccess(self, req, fid):
816	# The dance to get into the request body
817	if req.has_key('ReleaseAccessRequestBody'):
818	req = req['ReleaseAccessRequestBody']
819	else:
820	raise service_error(service_error.req, "No request!?")
821
822	if req.has_key('destinationTestbed'):
823	dt = unpack_id(req['destinationTestbed'])
824	else:
825	dt = None
826
827	if dt == None or dt in self.testbed:
828	# Local request
829	try:
830	if req['allocID'].has_key('localname'):
831	auth_attr = aid = req['allocID']['localname']
832	elif req['allocID'].has_key('fedid'):
833	aid = unicode(req['allocID']['fedid'])
834	auth_attr = req['allocID']['fedid']
835	else:
836	raise service_error(service_error.req,
837	"Only localnames and fedids are understood")
838	except KeyError:
839	raise service_error(service_error.req, "Badly formed request")
840
841	self.log.debug("[access] deallocation requested for %s", aid)
842	if not self.auth.check_attribute(fid, auth_attr):
843	self.log.debug("[access] deallocation denied for %s", aid)
844	raise service_error(service_error.access, "Access Denied")
845
846	# If we know this allocation, reduce the reference counts and
847	# remove the local allocations. Otherwise report an error. If
848	# there is an allocation to delete, del_users will be a dictonary
849	# of sets where the key is the user that owns the keys in the set.
850	# We use a set to avoid duplicates. del_project is just the name
851	# of any dynamic project to delete. We're somewhat lazy about
852	# deleting authorization attributes. Having access to something
853	# that doesn't exist isn't harmful.
854	del_users = { }
855	del_project = None
856	del_types = set()
857
858	if self.allocation.has_key(aid):
859	self.log.debug("Found allocation for %s" %aid)
860	self.state_lock.acquire()
861	for k in self.allocation[aid]['keys']:
862	kk = "%s:%s" % k
863	self.keys[kk] -= 1
864	if self.keys[kk] == 0:
865	if not del_users.has_key(k[0]):
866	del_users[k[0]] = set()
867	del_users[k[0]].add(k[1])
868	del self.keys[kk]
869
870	if self.allocation[aid].has_key('project'):
871	pname = self.allocation[aid]['project']
872	self.projects[pname] -= 1
873	if self.projects[pname] == 0:
874	del_project = pname
875	del self.projects[pname]
876
877	if self.allocation[aid].has_key('types'):
878	for t in self.allocation[aid]['types']:
879	self.types[t] -= 1
880	if self.types[t] == 0:
881	if not del_project: del_project = t[0]
882	del_types.add(t[1])
883	del self.types[t]
884
885	del self.allocation[aid]
886	self.write_state()
887	self.state_lock.release()
888	# If we actually have resources to deallocate, prepare the call.
889	if del_project or del_users:
890	msg = { 'project': { }}
891	if del_project:
892	msg['project']['name']= {'localname': del_project}
893	users = [ ]
894	for u in del_users.keys():
895	users.append({ 'userID': { 'localname': u },\
896	'access' : \
897	[ {'sshPubkey' : s } for s in del_users[u]]\
898	})
899	if users:
900	msg['project']['user'] = users
901	if len(del_types) > 0:
902	msg['resources'] = { 'node': \
903	[ {'hardware': [ h ] } for h in del_types ]\
904	}
905	if self.allocate_project.release_project:
906	msg = { 'ReleaseProjectRequestBody' : msg}
907	self.allocate_project.release_project(msg)
908	# And remove the access cert
909	cf = "%s/%s.pem" % (self.certdir, aid)
910	self.log.debug("Removing %s" % cf)
911	os.remove(cf)
912	return { 'allocID': req['allocID'] }
913	else:
914	raise service_error(service_error.req, "No such allocation")
915
916	else:
917	if self.allow_proxy:
918	resp = self.proxy_ReleaseAccess.call_service(dt, req,
919	self.cert_file, self.cert_pwd,
920	self.trusted_certs)
921	if resp.has_key('ReleaseAccessResponseBody'):
922	return resp['ReleaseAccessResponseBody']
923	else:
924	return None
925	else:
926	raise service_error(service_error.access,
927	"Access proxying denied")
928
929	def generate_portal_configs(self, topo, pubkey_base, secretkey_base,
930	tmpdir, master, lproj, leid, connInfo, services):
931
932	def conninfo_to_dict(key, info):
933	"""
934	Make a cpoy of the connection information about key, and flatten it
935	into a single dict by parsing out any feddAttrs.
936	"""
937
938	rv = None
939	for i in info:
940	if key == i.get('portal', "") or \
941	key in [e.get('element', "") \
942	for e in i.get('member', [])]:
943	rv = i.copy()
944	break
945
946	else:
947	return rv
948
949	if 'fedAttr' in rv:
950	for a in rv['fedAttr']:
951	attr = a.get('attribute', "")
952	val = a.get('value', "")
953	if attr and attr not in rv:
954	rv[attr] = val
955	del rv['fedAttr']
956	return rv
957
958	# XXX: un hardcode this
959	def client_null(f, s):
960	print >>f, "Service: %s" % s['name']
961
962	def client_smb(f, s):
963	print >>f, "Service: %s" % s['name']
964	smbshare = None
965	smbuser = None
966	smbproj = None
967	for a in s.get('fedAttr', []):
968	if a.get('attribute', '') == 'SMBSHARE':
969	smbshare = a.get('value', None)
970	elif a.get('attribute', '') == 'SMBUSER':
971	smbuser = a.get('value', None)
972	elif a.get('attribute', '') == 'SMBPROJ':
973	smbproj = a.get('value', None)
974
975	if all((smbshare, smbuser, smbproj)):
976	print >>f, "SMBshare: %s" % smbshare
977	print >>f, "ProjectUser: %s" % smbuser
978	print >>f, "ProjectName: %s" % smbproj
979
980	client_service_out = {
981	'SMB': client_smb,
982	'tmcd': client_null,
983	'seer': client_null,
984	'userconfig': client_null,
985	}
986
987	def server_port(f, s):
988	p = urlparse(s.get('server', 'http://localhost'))
989	print >>f, 'port: remote:%s:%s:%s' % (p.port, p.hostname, p.port)
990
991	def server_null(f,s): pass
992
993	def server_seer(f, s):
994	print >>f, 'seer: true'
995
996	server_service_out = {
997	'SMB': server_port,
998	'tmcd': server_port,
999	'userconfig': server_null,
1000	'seer': server_seer,
1001	}
1002	# XXX: end un hardcode this
1003
1004
1005	seer_out = False
1006	client_out = False
1007	for e in [ e for e in topo.elements \
1008	if isinstance(e, topdl.Computer) and e.get_attribute('portal')]:
1009	myname = e.name[0]
1010	type = e.get_attribute('portal_type')
1011	testbed = e.get_attribute('testbed')
1012
1013	info = conninfo_to_dict(myname, connInfo)
1014
1015	if not info:
1016	raise service_error(service_error.req,
1017	"No connectivity info for %s" % myname)
1018
1019	peer = info.get('peer', "")
1020	ldomain = self.domain;
1021	ssh_port = info.get('ssh_port', 22)
1022
1023	mexp = info.get('masterexperiment',"")
1024	mproj, meid = mexp.split("/", 1)
1025	mdomain = info.get('masterdomain',"")
1026	muser = info.get('masteruser','root')
1027	smbshare = info.get('smbshare', 'USERS')
1028
1029	active = info.get('active', 'False')
1030
1031	cfn = "%s/%s.gw.conf" % (tmpdir, myname.lower())
1032	tunnelconfig = self.attrs.has_key('TunnelCfg')
1033	try:
1034	f = open(cfn, "w")
1035	if active == 'True':
1036	print >>f, "active: True"
1037	print >>f, "ssh_port: %s" % ssh_port
1038	if type in ('control', 'both'):
1039	for s in [s for s in services \
1040	if s.get('name', "") in self.imports]:
1041	server_service_out[s['name']](f, s)
1042
1043	if tunnelconfig:
1044	print >>f, "tunnelip: %s" % tunnelconfig
1045	print >>f, "peer: %s" % peer.lower()
1046	print >>f, "ssh_pubkey: /proj/%s/exp/%s/tmp/%s" % \
1047	(lproj, leid, pubkey_base)
1048	print >>f, "ssh_privkey: /proj/%s/exp/%s/tmp/%s" % \
1049	(lproj, leid, secretkey_base)
1050	f.close()
1051	except IOError, e:
1052	raise service_error(service_error.internal,
1053	"Can't write protal config %s: %s" % (cfn, e))
1054
1055	if not client_out and type in ('control', 'both'):
1056	try:
1057	f = open("%s/client.conf" % tmpdir, "w")
1058	print >>f, "ControlGateway: %s.%s.%s%s" % \
1059	(myname.lower(), leid.lower(), lproj.lower(),
1060	ldomain.lower())
1061	for s in services:
1062	if s.get('name',"") in self.imports and \
1063	s.get('visibility','') == 'import':
1064	client_service_out[s['name']](f, s)
1065	# Seer uses this.
1066	print >>f, "ExperimentID: %s/%s" % (mproj, meid)
1067	# Better way...
1068	if testbed == master:
1069	print >>f, "SEERBase: True"
1070	f.close()
1071	except IOError, e:
1072	raise service_error(service_error.internal,
1073	"Cannot write client.conf: %s" %s)
1074	client_out = True
1075
1076
1077	def generate_ns2(self, topo, expfn, softdir, master, connInfo):
1078	class dragon_commands:
1079	"""
1080	Functor to spit out approrpiate dragon commands for nodes listed in
1081	the connectivity description. The constructor makes a dict mapping
1082	dragon nodes to their parameters and the __call__ checks each
1083	element in turn for membership.
1084	"""
1085	def __init__(self, map):
1086	self.node_info = map
1087
1088	def __call__(self, e):
1089	s = ""
1090	if isinstance(e, topdl.Computer):
1091	if self.node_info.has_key(e.name[0]):
1092	i = self.node_info[e.name[0]]
1093	for ifname, vlan, type in i:
1094	for i in e.interface:
1095	if i.name == ifname:
1096	addr = i.get_attribute('ip4_address')
1097	subs = i.substrate[0]
1098	break
1099	else:
1100	raise service_error(service_error.internal,
1101	"No interface %s on element %s" % \
1102	(ifname, e.name[0]))
1103	# XXX: do netmask right
1104	if type =='link':
1105	s = ("tb-allow-external $%s dragonportal " + \
1106	"ip %s vlan %s netmask 255.255.255.0\n") % \
1107	(e.name[0], addr, vlan)
1108	elif type =='lan':
1109	s = ("tb-allow-external $%s dragonportal " + \
1110	"ip %s vlan %s usurp %s\n") % \
1111	(e.name[0], addr, vlan, subs)
1112	else:
1113	raise service_error(service_error_internal,
1114	"Unknown DRAGON type %s" % type)
1115	return s
1116
1117	class not_dragon:
1118	def __init__(self, map):
1119	self.nodes = set(map.keys())
1120
1121	def __call__(self, e):
1122	return e.name[0] not in self.nodes
1123
1124	def add_kit(e, kit):
1125	"""
1126	Add a Software object created from the list of (install, location)
1127	tuples passed as kit to the software attribute of an object e. We
1128	do this enough to break out the code, but it's kind of a hack to
1129	avoid changing the old tuple rep.
1130	"""
1131
1132	s = [ topdl.Software(install=i, location=l) for i, l in kit]
1133
1134	if isinstance(e.software, list): e.software.extend(s)
1135	else: e.software = s
1136
1137
1138	t = topo.clone()
1139
1140	dragon_map = { }
1141	for i in [ i for i in connInfo if i['type'] == 'transit']:
1142	for a in i.get('fedAttr', []):
1143	if a['attribute'] == 'vlan_id':
1144	vlan = a['value']
1145	break
1146	else:
1147	raise service_error(service_error.internal,
1148	"No vlan tag")
1149	members = i.get('member', [])
1150	if len(members) > 1: type = 'lan'
1151	else: type = 'link'
1152
1153	try:
1154	for m in members:
1155	if dragon_map.has_key(m['element']):
1156	dragon_map[m['element']].append(( m['interface'],
1157	vlan, type))
1158	else:
1159	dragon_map[m['element']] = [( m['interface'],
1160	vlan, type),]
1161	except KeyError:
1162	raise service_error(service_error.req,
1163	"Missing connectivity info")
1164
1165	# The startcmds for master and slave testbeds
1166	if master:
1167	gate_cmd = self.attrs.get('MasterConnectorStartCmd', '/bin/true')
1168	node_cmd = self.attrs.get('MasterNodeStartCmd', 'bin/true')
1169	else:
1170	gate_cmd = self.attrs.get('SlaveConnectorStartCmd', '/bin/true')
1171	node_cmd = self.attrs.get('SlaveNodeStartCmd', 'bin/true')
1172
1173	# Weed out the things we aren't going to instantiate: Segments, portal
1174	# substrates, and portal interfaces. (The copy in the for loop allows
1175	# us to delete from e.elements in side the for loop). While we're
1176	# touching all the elements, we also adjust paths from the original
1177	# testbed to local testbed paths and put the federation commands into
1178	# the start commands
1179	for e in [e for e in t.elements]:
1180	if isinstance(e, topdl.Segment):
1181	t.elements.remove(e)
1182	if isinstance(e, topdl.Computer):
1183	add_kit(e, self.federation_software)
1184	if e.get_attribute('portal') and gate_cmd:
1185	# Add local portal support software
1186	add_kit(e, self.portal_software)
1187	# Portals never have a user-specified start command
1188	e.set_attribute('startup', gate_cmd)
1189	elif node_cmd:
1190	if e.get_attribute('startup'):
1191	e.set_attribute('startup', "%s \\$USER '%s'" % \
1192	(node_cmd, e.get_attribute('startup')))
1193	else:
1194	e.set_attribute('startup', node_cmd)
1195
1196	dinf = [i[0] for i in dragon_map.get(e.name[0], []) ]
1197	# Remove portal interfaces that do not connect to DRAGON
1198	e.interface = [i for i in e.interface \
1199	if not i.get_attribute('portal') or i.name in dinf ]
1200	# Fix software paths
1201	for s in getattr(e, 'software', []):
1202	s.location = re.sub("^.*/", softdir, s.location)
1203
1204	t.substrates = [ s.clone() for s in t.substrates ]
1205	t.incorporate_elements()
1206
1207	# Customize the ns2 output for local portal commands and images
1208	filters = []
1209
1210	# NB: these are extra commands issued for the node, not the startcmds
1211	if master: cmd = self.attrs.get('MasterConnectorCmd', '')
1212	else: cmd = self.attrs.get('SlaveConnectorCmd', '')
1213
1214	if self.attrs.has_key('dragon'):
1215	add_filter = not_dragon(dragon_map)
1216	filters.append(dragon_commands(dragon_map))
1217	else:
1218	add_filter = None
1219
1220	if cmd:
1221	filters.append(topdl.generate_portal_command_filter(cmd,
1222	add_filter=add_filter))
1223
1224	if self.attrs.has_key('connectorImage'):
1225	filters.append(topdl.generate_portal_image_filter(
1226	self.attrs.get('connectorImage')))
1227
1228	if self.attrs.has_key('connectorType'):
1229	filters.append(topdl.generate_portal_hardware_filter(
1230	self.attrs.get('connectorType')))
1231
1232	# Convert to ns and write it out
1233	expfile = topdl.topology_to_ns2(t, filters)
1234	try:
1235	f = open(expfn, "w")
1236	print >>f, expfile
1237	f.close()
1238	except IOError:
1239	raise service_error(service_error.internal,
1240	"Cannot write experiment file %s: %s" % (expfn,e))
1241
1242	def export_store_info(self, cf, proj, ename, connInfo):
1243	"""
1244	For the export requests in the connection info, install the peer names
1245	at the experiment controller via SetValue calls.
1246	"""
1247
1248	call_SetValue = service_caller('SetValue', log=self.log)
1249	for c in connInfo:
1250	for p in [ p for p in c.get('parameter', []) \
1251	if p.get('type', '') == 'output']:
1252
1253	if p.get('name', '') == 'peer':
1254	k = p.get('key', None)
1255	surl = p.get('store', None)
1256	if surl and k and k.index('/') != -1:
1257	value = "%s.%s.%s%s" % \
1258	(k[k.index('/')+1:], ename, proj, self.domain)
1259	req = { 'name': k, 'value': value }
1260	call_SetValue(surl, req, cf)
1261	else:
1262	self.log.error("Bad export request: %s" % p)
1263	elif p.get('name', '') == 'ssh_port':
1264	k = p.get('key', None)
1265	surl = p.get('store', None)
1266	if surl and k:
1267	req = { 'name': k, 'value': self.ssh_port }
1268	call_SetValue(surl, req, cf)
1269	else:
1270	self.log.error("Bad export request: %s" % p)
1271	else:
1272	self.log.error("Unknown export parameter: %s" % \
1273	p.get('name'))
1274	continue
1275
1276	def import_store_info(self, cf, connInfo):
1277	"""
1278	Pull any import parameters in connInfo in. We translate them either
1279	into known member names or fedAddrs.
1280	"""
1281
1282	for c in connInfo:
1283	for p in [ p for p in c.get('parameter', []) \
1284	if p.get('type', '') == 'input']:
1285	name = p.get('name', None)
1286	key = p.get('key', None)
1287	store = p.get('store', None)
1288
1289	if name and key and store :
1290	req = { 'name': key, 'wait': True }
1291	r = self.call_GetValue(store, req, cf)
1292	r = r.get('GetValueResponseBody', None)
1293	if r :
1294	if r.get('name', '') == key:
1295	v = r.get('value', None)
1296	if v is not None:
1297	if name == 'peer':
1298	c['peer'] = v
1299	else:
1300	if c.has_key('fedAttr'):
1301	c['fedAttr'].append({
1302	'attribute': name, 'value': v})
1303	else:
1304	c['fedAttr']= [{
1305	'attribute': name, 'value': v}]
1306	else:
1307	raise service_error(service_error.internal,
1308	'None value exported for %s' % key)
1309	else:
1310	raise service_error(service_error.internal,
1311	'Different name returned for %s: %s' \
1312	% (key, r.get('name','')))
1313	else:
1314	raise service_error(service_error.internal,
1315	'Badly formatted response: no GetValueResponseBody')
1316	else:
1317	raise service_error(service_error.internal,
1318	'Bad Services missing info for import %s' % c)
1319
1320	def StartSegment(self, req, fid):
1321
1322	configs = set(('hosts', 'ssh_pubkey', 'ssh_secretkey'))
1323
1324	err = None # Any service_error generated after tmpdir is created
1325	rv = None # Return value from segment creation
1326
1327	try:
1328	req = req['StartSegmentRequestBody']
1329	except KeyError:
1330	raise service_error(server_error.req, "Badly formed request")
1331
1332	connInfo = req.get('connection', [])
1333	services = req.get('service', [])
1334	auth_attr = req['allocID']['fedid']
1335	aid = "%s" % auth_attr
1336	attrs = req.get('fedAttr', [])
1337	if not self.auth.check_attribute(fid, auth_attr):
1338	raise service_error(service_error.access, "Access denied")
1339	else:
1340	# See if this is a replay of an earlier succeeded StartSegment -
1341	# sometimes SSL kills 'em. If so, replay the response rather than
1342	# redoing the allocation.
1343	self.state_lock.acquire()
1344	retval = self.allocation[aid].get('started', None)
1345	self.state_lock.release()
1346	if retval:
1347	self.log.warning("Duplicate StartSegment for %s: " % aid + \
1348	"replaying response")
1349	return retval
1350
1351	# A new request. Do it.
1352
1353	if req.has_key('segmentdescription') and \
1354	req['segmentdescription'].has_key('topdldescription'):
1355	topo = \
1356	topdl.Topology(**req['segmentdescription']['topdldescription'])
1357	else:
1358	raise service_error(service_error.req,
1359	"Request missing segmentdescription'")
1360
1361	master = req.get('master', False)
1362
1363	certfile = "%s/%s.pem" % (self.certdir, auth_attr)
1364	try:
1365	tmpdir = tempfile.mkdtemp(prefix="access-")
1366	softdir = "%s/software" % tmpdir
1367	except IOError:
1368	raise service_error(service_error.internal, "Cannot create tmp dir")
1369
1370	# Try block alllows us to clean up temporary files.
1371	try:
1372	sw = set()
1373	for e in topo.elements:
1374	for s in getattr(e, 'software', []):
1375	sw.add(s.location)
1376	os.mkdir(softdir)
1377	for s in sw:
1378	self.log.debug("Retrieving %s" % s)
1379	try:
1380	get_url(s, certfile, softdir)
1381	except:
1382	t, v, st = sys.exc_info()
1383	raise service_error(service_error.internal,
1384	"Error retrieving %s: %s" % (s, v))
1385
1386	# Copy local federation and portal node software to the tempdir
1387	for s in (self.federation_software, self.portal_software):
1388	for l, f in s:
1389	base = os.path.basename(f)
1390	copy_file(f, "%s/%s" % (softdir, base))
1391
1392	for a in attrs:
1393	if a['attribute'] in configs:
1394	try:
1395	get_url(a['value'], certfile, tmpdir)
1396	except:
1397	t, v, st = sys.exc_info()
1398	raise service_error(service_error.internal,
1399	"Error retrieving %s: %s" % (s, v))
1400	if a['attribute'] == 'ssh_pubkey':
1401	pubkey_base = a['value'].rpartition('/')[2]
1402	if a['attribute'] == 'ssh_secretkey':
1403	secretkey_base = a['value'].rpartition('/')[2]
1404	if a['attribute'] == 'experiment_name':
1405	ename = a['value']
1406
1407	# If the userconf service was imported, collect the configuration
1408	# data.
1409	for s in services:
1410	if s.get("name", "") == 'userconfig' \
1411	and s.get('visibility',"") == 'import':
1412
1413	# Collect ther server and certificate info.
1414	u = s.get('server', None)
1415	for a in s.get('fedAttr', []):
1416	if a.get('attribute',"") == 'cert':
1417	cert = a.get('value', None)
1418	break
1419	else:
1420	cert = None
1421
1422	if cert:
1423	# Make a temporary certificate file for get_url. The
1424	# finally clause removes it whether something goes
1425	# wrong (including an exception from get_url) or not.
1426	try:
1427	tfos, tn = tempfile.mkstemp(suffix=".pem")
1428	tf = os.fdopen(tfos, 'w')
1429	print >>tf, cert
1430	tf.close()
1431	get_url(u, tn, tmpdir, "userconf")
1432	except IOError, e:
1433	raise service_error(service.error.internal,
1434	"Cannot create temp file for " +
1435	"userconfig certificates: %s e")
1436	except:
1437	t, v, st = sys.exc_info()
1438	raise service_error(service_error.internal,
1439	"Error retrieving %s: %s" % (s, v))
1440	finally:
1441	if tn: os.remove(tn)
1442	else:
1443	raise service_error(service_error.req,
1444	"No certificate for retreiving userconfig")
1445	break
1446
1447
1448
1449	proj = None
1450	user = None
1451	self.state_lock.acquire()
1452	if self.allocation.has_key(aid):
1453	proj = self.allocation[aid].get('project', None)
1454	if not proj:
1455	proj = self.allocation[aid].get('sproject', None)
1456	user = self.allocation[aid].get('user', None)
1457	self.allocation[aid]['experiment'] = ename
1458	self.allocation[aid]['log'] = [ ]
1459	# Create a logger that logs to the experiment's state object as
1460	# well as to the main log file.
1461	alloc_log = logging.getLogger('fedd.access.%s' % ename)
1462	h = logging.StreamHandler(
1463	list_log.list_log(self.allocation[aid]['log']))
1464	# XXX: there should be a global one of these rather than
1465	# repeating the code.
1466	h.setFormatter(logging.Formatter(
1467	"%(asctime)s %(name)s %(message)s",
1468	'%d %b %y %H:%M:%S'))
1469	alloc_log.addHandler(h)
1470	self.write_state()
1471	self.state_lock.release()
1472
1473	if not proj:
1474	raise service_error(service_error.internal,
1475	"Can't find project for %s" %aid)
1476
1477	if not user:
1478	raise service_error(service_error.internal,
1479	"Can't find creation user for %s" %aid)
1480
1481	self.export_store_info(certfile, proj, ename, connInfo)
1482	self.import_store_info(certfile, connInfo)
1483
1484	expfile = "%s/experiment.tcl" % tmpdir
1485
1486	self.generate_portal_configs(topo, pubkey_base,
1487	secretkey_base, tmpdir, master, proj, ename, connInfo,
1488	services)
1489	self.generate_ns2(topo, expfile,
1490	"/proj/%s/software/%s/" % (proj, ename), master, connInfo)
1491
1492	starter = self.start_segment(keyfile=self.ssh_privkey_file,
1493	debug=self.create_debug, log=alloc_log)
1494	rv = starter(self, ename, proj, user, expfile, tmpdir)
1495	except service_error, e:
1496	err = e
1497	except e:
1498	err = service_error(service_error.internal, str(e))
1499
1500	# Walk up tmpdir, deleting as we go
1501	if self.cleanup:
1502	self.log.debug("[StartSegment]: removing %s" % tmpdir)
1503	for path, dirs, files in os.walk(tmpdir, topdown=False):
1504	for f in files:
1505	os.remove(os.path.join(path, f))
1506	for d in dirs:
1507	os.rmdir(os.path.join(path, d))
1508	os.rmdir(tmpdir)
1509	else:
1510	self.log.debug("[StartSegment]: not removing %s" % tmpdir)
1511
1512	if rv:
1513	# Grab the log (this is some anal locking, but better safe than
1514	# sorry)
1515	self.state_lock.acquire()
1516	logv = "".join(self.allocation[aid]['log'])
1517	# It's possible that the StartSegment call gets retried (!).
1518	# if the 'started' key is in the allocation, we'll return it rather
1519	# than redo the setup.
1520	self.allocation[aid]['started'] = {
1521	'allocID': req['allocID'],
1522	'allocationLog': logv,
1523	}
1524	retval = self.allocation[aid]['started']
1525	self.state_lock.release()
1526
1527	return retval
1528	elif err:
1529	raise service_error(service_error.federant,
1530	"Swapin failed: %s" % err)
1531	else:
1532	raise service_error(service_error.federant, "Swapin failed")
1533
1534	def TerminateSegment(self, req, fid):
1535	try:
1536	req = req['TerminateSegmentRequestBody']
1537	except KeyError:
1538	raise service_error(server_error.req, "Badly formed request")
1539
1540	auth_attr = req['allocID']['fedid']
1541	aid = "%s" % auth_attr
1542	attrs = req.get('fedAttr', [])
1543	if not self.auth.check_attribute(fid, auth_attr):
1544	raise service_error(service_error.access, "Access denied")
1545
1546	self.state_lock.acquire()
1547	if self.allocation.has_key(aid):
1548	proj = self.allocation[aid].get('project', None)
1549	if not proj:
1550	proj = self.allocation[aid].get('sproject', None)
1551	user = self.allocation[aid].get('user', None)
1552	ename = self.allocation[aid].get('experiment', None)
1553	else:
1554	proj = None
1555	user = None
1556	ename = None
1557	self.state_lock.release()
1558
1559	if not proj:
1560	raise service_error(service_error.internal,
1561	"Can't find project for %s" % aid)
1562
1563	if not user:
1564	raise service_error(service_error.internal,
1565	"Can't find creation user for %s" % aid)
1566	if not ename:
1567	raise service_error(service_error.internal,
1568	"Can't find experiment name for %s" % aid)
1569	stopper = self.stop_segment(keyfile=self.ssh_privkey_file,
1570	debug=self.create_debug)
1571	stopper(self, user, proj, ename)
1572	return { 'allocID': req['allocID'] }

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