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source: fedd/federation/protogeni_access.py @ 9a8cd92

axis_examplecompt_changesinfo-opsversion-3.01version-3.02

Last change on this file since 9a8cd92 was b4b19c7, checked in by Ted Faber <faber@…>, 15 years ago
Get topology information into the info operation, as annotations of a topology description. This required adding such information to the start segment replies as well
Property mode set to `100644`
File size: 41.0 KB

Line
1	#!/usr/local/bin/python
2
3	import os,sys
4	import stat # for chmod constants
5	import re
6	import time
7	import string
8	import copy
9	import pickle
10	import logging
11	import subprocess
12
13	from threading import *
14	from M2Crypto.SSL import SSLError
15
16	from util import *
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_protogeni_segment
30
31
32	# Make log messages disappear if noone configures a fedd logger
33	class nullHandler(logging.Handler):
34	def emit(self, record): pass
35
36	fl = logging.getLogger("fedd.access")
37	fl.addHandler(nullHandler())
38
39	class access:
40	"""
41	The implementation of access control based on mapping users to projects.
42
43	Users can be mapped to existing projects or have projects created
44	dynamically. This implements both direct requests and proxies.
45	"""
46
47	class parse_error(RuntimeError): pass
48
49
50	proxy_RequestAccess= service_caller('RequestAccess')
51	proxy_ReleaseAccess= service_caller('ReleaseAccess')
52
53	def __init__(self, config=None, auth=None):
54	"""
55	Initializer. Pulls parameters out of the ConfigParser's access section.
56	"""
57
58	def software_list(v):
59	l = [ ]
60	if v:
61	ps = v.split(" ")
62	while len(ps):
63	loc, file = ps[0:2]
64	del ps[0:2]
65	if loc == 'rpm':
66	loc = None
67	l.append((loc, file))
68	return l
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.domain = config.get("access", "domain")
78	self.certdir = config.get("access","certdir")
79	self.userconfdir = config.get("access","userconfdir")
80	self.userconfcmd = config.get("access","userconfcmd")
81	self.userconfurl = config.get("access","userconfurl")
82	self.federation_software = config.get("access", "federation_software")
83	self.portal_software = config.get("access", "portal_software")
84	self.ssh_port = config.get("access","ssh_port") or "22"
85	self.sshd = config.get("access","sshd")
86	self.sshd_config = config.get("access", "sshd_config")
87	self.create_debug = config.getboolean("access", "create_debug")
88	self.cleanup = not config.getboolean("access", "leave_tmpfiles")
89	self.access_type = config.get("access", "type")
90	self.staging_dir = config.get("access", "staging_dir") or "/tmp"
91	self.staging_host = config.get("access", "staging_host") \
92	or "ops.emulab.net"
93
94	self.federation_software = software_list(self.federation_software)
95	self.portal_software = software_list(self.portal_software)
96
97	self.renewal_interval = config.get("access", "renewal") or (3 * 60 )
98	self.renewal_interval = int(self.renewal_interval) * 60
99
100	self.ch_url = config.get("access", "ch_url")
101	self.sa_url = config.get("access", "sa_url")
102	self.cm_url = config.get("access", "cm_url")
103
104	self.attrs = { }
105	self.access = { }
106	self.restricted = [ ]
107	self.projects = { }
108	self.keys = { }
109	self.types = { }
110	self.allocation = { }
111	self.state = {
112	'projects': self.projects,
113	'allocation' : self.allocation,
114	'keys' : self.keys,
115	'types': self.types
116	}
117	self.log = logging.getLogger("fedd.access")
118	set_log_level(config, "access", self.log)
119	self.state_lock = Lock()
120	# XXX: Configurable
121	self.exports = set(('SMB', 'seer', 'tmcd', 'userconfig'))
122	self.imports = set(('SMB', 'seer', 'userconfig'))
123
124	if auth: self.auth = auth
125	else:
126	self.log.error(\
127	"[access]: No authorizer initialized, creating local one.")
128	auth = authorizer()
129
130	tb = config.get('access', 'testbed')
131	if tb: self.testbed = [ t.strip() for t in tb.split(',') ]
132	else: self.testbed = [ ]
133
134	if config.has_option("access", "accessdb"):
135	self.read_access(config.get("access", "accessdb"))
136
137	self.state_filename = config.get("access", "access_state")
138	print "Calling read_state %s" % self.state_filename
139	self.read_state()
140
141	# Keep cert_file and cert_pwd coming from the same place
142	self.cert_file = config.get("access", "cert_file")
143	if self.cert_file:
144	self.sert_pwd = config.get("access", "cert_pw")
145	else:
146	self.cert_file = config.get("globals", "cert_file")
147	self.sert_pwd = config.get("globals", "cert_pw")
148
149	self.trusted_certs = config.get("access", "trusted_certs") or \
150	config.get("globals", "trusted_certs")
151
152	self.start_segment = proxy_protogeni_segment.start_segment
153	self.stop_segment = proxy_protogeni_segment.stop_segment
154	self.renew_segment = proxy_protogeni_segment.renew_segment
155
156	self.call_SetValue = service_caller('SetValue')
157	self.call_GetValue = service_caller('GetValue')
158
159	self.RenewSlices()
160
161	self.soap_services = {\
162	'RequestAccess': soap_handler("RequestAccess", self.RequestAccess),
163	'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess),
164	'StartSegment': soap_handler("StartSegment", self.StartSegment),
165	'TerminateSegment': soap_handler("TerminateSegment",
166	self.TerminateSegment),
167	}
168	self.xmlrpc_services = {\
169	'RequestAccess': xmlrpc_handler('RequestAccess',
170	self.RequestAccess),
171	'ReleaseAccess': xmlrpc_handler('ReleaseAccess',
172	self.ReleaseAccess),
173	'StartSegment': xmlrpc_handler("StartSegment", self.StartSegment),
174	'TerminateSegment': xmlrpc_handler('TerminateSegment',
175	self.TerminateSegment),
176	}
177
178	def read_access(self, config):
179	"""
180	Read a configuration file and set internal parameters.
181
182	There are access lines of the
183	form (tb, proj, user) -> user that map the first tuple of
184	names to the user for for access purposes. Names in the key (left side)
185	can include "<NONE> or <ANY>" to act as wildcards or to require the
186	fields to be empty. Similarly aproj or auser can be <SAME> or
187	<DYNAMIC> indicating that either the matching key is to be used or a
188	dynamic user or project will be created. These names can also be
189	federated IDs (fedid's) if prefixed with fedid:. The user is the
190	ProtoGENI identity certificate.
191	Testbed attributes outside the forms above can be given using the
192	format attribute: name value: value. The name is a single word and the
193	value continues to the end of the line. Empty lines and lines startin
194	with a # are ignored.
195
196	Parsing errors result in a self.parse_error exception being raised.
197	"""
198	lineno=0
199	name_expr = "["+string.ascii_letters + string.digits + "\/\.\-_]+"
200	fedid_expr = "fedid:[" + string.hexdigits + "]+"
201	key_name = "(<ANY>\|<NONE>\|"+fedid_expr + "\|"+ name_expr + ")"
202
203	attr_re = re.compile('attribute:\s([\._\-a-z0-9]+)\s+value:\s(.*)',
204	re.IGNORECASE)
205	access_str = '\('+key_name+'\s,\s'+key_name+'\s,\s'+ \
206	key_name+'\s\)\s->\s\(('+name_expr +')\s,\s*('\
207	+ name_expr + ')\s,\s('+name_expr+')\s,?\s(' + \
208	name_expr+ ')?\)'
209	access_re = re.compile(access_str, re.IGNORECASE)
210
211
212	def parse_name(n):
213	if n.startswith('fedid:'): return fedid(hexstr=n[len('fedid:'):])
214	else: return n
215
216	def auth_name(n):
217	if isinstance(n, basestring):
218	if n =='<any>' or n =='<none>': return None
219	else: return unicode(n)
220	else:
221	return n
222
223	f = open(config, "r");
224	for line in f:
225	lineno += 1
226	line = line.strip();
227	if len(line) == 0 or line.startswith('#'):
228	continue
229
230	# Extended (attribute: x value: y) attribute line
231	m = attr_re.match(line)
232	if m != None:
233	attr, val = m.group(1,2)
234	self.attrs[attr] = val
235	continue
236
237	# Access line (t, p, u) -> (a, pw) line
238	m = access_re.match(line)
239	if m != None:
240	access_key = tuple([ parse_name(x) for x in m.group(1,2,3)])
241	auth_key = tuple([ auth_name(x) for x in access_key])
242	cert = auth_name(parse_name(m.group(4)))
243	user_name = auth_name(parse_name(m.group(5)))
244	ssh_key = unicode(m.group(6))
245	if m.group(6): pw = unicode(m.group(7))
246	else: pw = None
247
248	self.access[access_key] = (cert, user_name, ssh_key, pw)
249	self.auth.set_attribute(auth_key, "access")
250	continue
251
252	# Nothing matched to here: unknown line - raise exception
253	f.close()
254	raise self.parse_error("Unknown statement at line %d of %s" % \
255	(lineno, config))
256	f.close()
257
258	def write_state(self):
259	if self.state_filename:
260	try:
261	f = open(self.state_filename, 'w')
262	pickle.dump(self.state, f)
263	except IOError, e:
264	self.log.error("Can't write file %s: %s" % \
265	(self.state_filename, e))
266	except pickle.PicklingError, e:
267	self.log.error("Pickling problem: %s" % e)
268	except TypeError, e:
269	self.log.error("Pickling problem (TypeError): %s" % e)
270
271
272	def read_state(self):
273	"""
274	Read a new copy of access state. Old state is overwritten.
275
276	State format is a simple pickling of the state dictionary.
277	"""
278	if self.state_filename:
279	try:
280	f = open(self.state_filename, "r")
281	self.state = pickle.load(f)
282	self.log.debug("[read_state]: Read state from %s" % \
283	self.state_filename)
284	except IOError, e:
285	self.log.warning(("[read_state]: No saved state: " +\
286	"Can't open %s: %s") % (self.state_filename, e))
287	except EOFError, e:
288	self.log.warning(("[read_state]: " +\
289	"Empty or damaged state file: %s:") % \
290	self.state_filename)
291	except pickle.UnpicklingError, e:
292	self.log.warning(("[read_state]: No saved state: " + \
293	"Unpickling failed: %s") % e)
294
295	# Add the ownership attributes to the authorizer. Note that the
296	# indices of the allocation dict are strings, but the attributes are
297	# fedids, so there is a conversion.
298	for k in self.state.get('allocation', {}).keys():
299	for o in self.state['allocation'][k].get('owners', []):
300	self.auth.set_attribute(o, fedid(hexstr=k))
301	self.auth.set_attribute(fedid(hexstr=k),fedid(hexstr=k))
302
303	if self.allocation != self.state['allocation']:
304	self.allocation = self.state['allocation']
305
306	def permute_wildcards(self, a, p):
307	"""Return a copy of a with various fields wildcarded.
308
309	The bits of p control the wildcards. A set bit is a wildcard
310	replacement with the lowest bit being user then project then testbed.
311	"""
312	if p & 1: user = ["<any>"]
313	else: user = a[2]
314	if p & 2: proj = "<any>"
315	else: proj = a[1]
316	if p & 4: tb = "<any>"
317	else: tb = a[0]
318
319	return (tb, proj, user)
320
321
322	def find_access(self, search):
323	"""
324	Search the access DB for a match on this tuple. Return the matching
325	user (protoGENI cert).
326
327	NB, if the initial tuple fails to match we start inserting wildcards in
328	an order determined by self.project_priority. Try the list of users in
329	order (when wildcarded, there's only one user in the list).
330	"""
331	if self.project_priority: perm = (0, 1, 2, 3, 4, 5, 6, 7)
332	else: perm = (0, 2, 1, 3, 4, 6, 5, 7)
333
334	for p in perm:
335	s = self.permute_wildcards(search, p)
336	# s[2] is None on an anonymous, unwildcarded request
337	if s[2] != None:
338	for u in s[2]:
339	if self.access.has_key((s[0], s[1], u)):
340	return self.access[(s[0], s[1], u)]
341	else:
342	if self.access.has_key(s):
343	return self.access[s]
344	return None
345
346	def lookup_access(self, req, fid):
347	"""
348	Determine the allowed access for this request. Return the access and
349	which fields are dynamic.
350
351	The fedid is needed to construct the request
352	"""
353	# Search keys
354	tb = None
355	project = None
356	user = None
357	# Return values
358	rp = access_project(None, ())
359	ru = None
360	user_re = re.compile("user:\s(.*)")
361	project_re = re.compile("project:\s(.*)")
362
363	user = [ user_re.findall(x)[0] for x in req.get('credential', []) \
364	if user_re.match(x)]
365	project = [ project_re.findall(x)[0] \
366	for x in req.get('credential', []) \
367	if project_re.match(x)]
368
369	if len(project) == 1: project = project[0]
370	elif len(project) == 0: project = None
371	else:
372	raise service_error(service_error.req,
373	"More than one project credential")
374
375
376	user_fedids = [ u for u in user if isinstance(u, fedid)]
377
378	# Determine how the caller is representing itself. If its fedid shows
379	# up as a project or a singleton user, let that stand. If neither the
380	# usernames nor the project name is a fedid, the caller is a testbed.
381	if project and isinstance(project, fedid):
382	if project == fid:
383	# The caller is the project (which is already in the tuple
384	# passed in to the authorizer)
385	owners = user_fedids
386	owners.append(project)
387	else:
388	raise service_error(service_error.req,
389	"Project asserting different fedid")
390	else:
391	if fid not in user_fedids:
392	tb = fid
393	owners = user_fedids
394	owners.append(fid)
395	else:
396	if len(fedids) > 1:
397	raise service_error(service_error.req,
398	"User asserting different fedid")
399	else:
400	# Which is a singleton
401	owners = user_fedids
402	# Confirm authorization
403
404	for u in user:
405	self.log.debug("[lookup_access] Checking access for %s" % \
406	((tb, project, u),))
407	if self.auth.check_attribute((tb, project, u), 'access'):
408	self.log.debug("[lookup_access] Access granted")
409	break
410	else:
411	self.log.debug("[lookup_access] Access Denied")
412	else:
413	raise service_error(service_error.access, "Access denied")
414
415	# This maps a valid user to the ProtoGENI credentials to use
416	found = self.find_access((tb, project, user))
417
418	if found == None:
419	raise service_error(service_error.access,
420	"Access denied - cannot map access")
421	return found, owners
422
423	def get_handler(self, path, fid):
424	self.log.info("Get handler %s %s" % (path, fid))
425	if self.auth.check_attribute(fid, path) and self.userconfdir:
426	return ("%s/%s" % (self.userconfdir, path), "application/binary")
427	else:
428	return (None, None)
429
430	def export_userconf(self, project):
431	dev_null = None
432	confid, confcert = generate_fedid("test", dir=self.userconfdir,
433	log=self.log)
434	conffilename = "%s/%s" % (self.userconfdir, str(confid))
435	cf = None
436	try:
437	cf = open(conffilename, "w")
438	os.chmod(conffilename, stat.S_IRUSR \| stat.S_IWUSR)
439	except IOError, e:
440	raise service_error(service_error.internal,
441	"Cannot create user configuration data")
442
443	try:
444	dev_null = open("/dev/null", "a")
445	except IOError, e:
446	self.log.error("export_userconf: can't open /dev/null: %s" % e)
447
448	cmd = "%s %s" % (self.userconfcmd, project)
449	conf = subprocess.call(cmd.split(" "),
450	stdout=cf, stderr=dev_null, close_fds=True)
451
452	self.auth.set_attribute(confid, "/%s" % str(confid))
453
454	return confid, confcert
455
456
457	def export_SMB(self, id, state, project, user):
458	return {
459	'id': id,
460	'name': 'SMB',
461	'visibility': 'export',
462	'server': 'http://fs:139',
463	'fedAttr': [
464	{ 'attribute': 'SMBSHARE', 'value': 'USERS' },
465	{ 'attribute': 'SMBUSER', 'value': user },
466	{ 'attribute': 'SMBPROJ', 'value': project },
467	]
468	}
469
470	def export_seer(self, id, state, project, user):
471	return {
472	'id': id,
473	'name': 'seer',
474	'visibility': 'export',
475	'server': 'http://control:16606',
476	}
477
478	def export_tmcd(self, id, state, project, user):
479	return {
480	'id': id,
481	'name': 'seer',
482	'visibility': 'export',
483	'server': 'http://boss:7777',
484	}
485
486	def export_userconfig(self, id, state, project, user):
487	if self.userconfdir and self.userconfcmd \
488	and self.userconfurl:
489	cid, cert = self.export_userconf(project)
490	state['userconfig'] = unicode(cid)
491	return {
492	'id': id,
493	'name': 'userconfig',
494	'visibility': 'export',
495	'server': "%s/%s" % (self.userconfurl, str(cid)),
496	'fedAttr': [
497	{ 'attribute': 'cert', 'value': cert },
498	]
499	}
500	else:
501	return None
502
503	def export_services(self, sreq, project, user):
504	exp = [ ]
505	state = { }
506	# XXX: Filthy shortcut here using http: so urlparse will give the right
507	# answers.
508	for s in sreq:
509	sname = s.get('name', '')
510	svis = s.get('visibility', '')
511	if svis == 'export':
512	if sname in self.exports:
513	id = s.get('id', 'no_id')
514	if sname == 'SMB':
515	exp.append(self.export_SMB(id, state, project, user))
516	elif sname == 'seer':
517	exp.append(self.export_seer(id, state, project, user))
518	elif sname == 'tmcd':
519	exp.append(self.export_tmcd(id, state, project, user))
520	elif sname == 'userconfig':
521	exp.append(self.export_userconfig(id, state,
522	project, user))
523	elif sname == 'project_export':
524	exp.append(self.export_SMB(id, state, project, user))
525	exp.append(self.export_seer(id, state, project, user))
526	exp.append(self.export_userconfig(id, state,
527	project, user))
528	return (exp, state)
529
530	def build_response(self, alloc_id, ap, services):
531	"""
532	Create the SOAP response.
533
534	Build the dictionary description of the response and use
535	fedd_utils.pack_soap to create the soap message. ap is the allocate
536	project message returned from a remote project allocation (even if that
537	allocation was done locally).
538	"""
539	# Because alloc_id is already a fedd_services_types.IDType_Holder,
540	# there's no need to repack it
541	msg = {
542	'allocID': alloc_id,
543	'fedAttr': [
544	{ 'attribute': 'domain', 'value': self.domain } ,
545	{ 'attribute': 'project', 'value':
546	ap['project'].get('name', {}).get('localname', "???") },
547	]
548	}
549	if len(self.attrs) > 0:
550	msg['fedAttr'].extend(
551	[ { 'attribute': x, 'value' : y } \
552	for x,y in self.attrs.iteritems()])
553
554	if services:
555	msg['service'] = services
556	return msg
557
558	def RequestAccess(self, req, fid):
559	"""
560	Handle the access request. Proxy if not for us.
561
562	Parse out the fields and make the allocations or rejections if for us,
563	otherwise, assuming we're willing to proxy, proxy the request out.
564	"""
565
566	# The dance to get into the request body
567	if req.has_key('RequestAccessRequestBody'):
568	req = req['RequestAccessRequestBody']
569	else:
570	raise service_error(service_error.req, "No request!?")
571
572	if req.has_key('destinationTestbed'):
573	dt = unpack_id(req['destinationTestbed'])
574
575	if dt == None or dt in self.testbed:
576	# Request for this fedd
577	found, owners = self.lookup_access(req, fid)
578	# keep track of what's been added
579	allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log)
580	aid = unicode(allocID)
581
582	self.state_lock.acquire()
583	self.allocation[aid] = { }
584	# The protoGENI certificate
585	self.allocation[aid]['credentials'] = found
586	# The list of owner FIDs
587	self.allocation[aid]['owners'] = owners
588	self.write_state()
589	self.state_lock.release()
590	for o in owners:
591	self.auth.set_attribute(o, allocID)
592	self.auth.set_attribute(allocID, allocID)
593
594	try:
595	f = open("%s/%s.pem" % (self.certdir, aid), "w")
596	print >>f, alloc_cert
597	f.close()
598	except IOError, e:
599	raise service_error(service_error.internal,
600	"Can't open %s/%s : %s" % (self.certdir, aid, e))
601	return { 'allocID': { 'fedid': allocID } }
602	else:
603	if self.allow_proxy:
604	resp = self.proxy_RequestAccess.call_service(dt, req,
605	self.cert_file, self.cert_pwd,
606	self.trusted_certs)
607	if resp.has_key('RequestAccessResponseBody'):
608	return resp['RequestAccessResponseBody']
609	else:
610	return None
611	else:
612	raise service_error(service_error.access,
613	"Access proxying denied")
614
615
616	def ReleaseAccess(self, req, fid):
617	# The dance to get into the request body
618	if req.has_key('ReleaseAccessRequestBody'):
619	req = req['ReleaseAccessRequestBody']
620	else:
621	raise service_error(service_error.req, "No request!?")
622
623	if req.has_key('destinationTestbed'):
624	dt = unpack_id(req['destinationTestbed'])
625	else:
626	dt = None
627
628	if dt == None or dt in self.testbed:
629	# Local request
630	try:
631	if req['allocID'].has_key('localname'):
632	auth_attr = aid = req['allocID']['localname']
633	elif req['allocID'].has_key('fedid'):
634	aid = unicode(req['allocID']['fedid'])
635	auth_attr = req['allocID']['fedid']
636	else:
637	raise service_error(service_error.req,
638	"Only localnames and fedids are understood")
639	except KeyError:
640	raise service_error(service_error.req, "Badly formed request")
641
642	self.log.debug("[access] deallocation requested for %s", aid)
643	if not self.auth.check_attribute(fid, auth_attr):
644	self.log.debug("[access] deallocation denied for %s", aid)
645	raise service_error(service_error.access, "Access Denied")
646
647	self.state_lock.acquire()
648	if self.allocation.has_key(aid):
649	self.log.debug("Found allocation for %s" %aid)
650	del self.allocation[aid]
651	self.write_state()
652	self.state_lock.release()
653	# And remove the access cert
654	cf = "%s/%s.pem" % (self.certdir, aid)
655	self.log.debug("Removing %s" % cf)
656	os.remove(cf)
657	return { 'allocID': req['allocID'] }
658	else:
659	self.state_lock.release()
660	raise service_error(service_error.req, "No such allocation")
661
662	else:
663	if self.allow_proxy:
664	resp = self.proxy_ReleaseAccess.call_service(dt, req,
665	self.cert_file, self.cert_pwd,
666	self.trusted_certs)
667	if resp.has_key('ReleaseAccessResponseBody'):
668	return resp['ReleaseAccessResponseBody']
669	else:
670	return None
671	else:
672	raise service_error(service_error.access,
673	"Access proxying denied")
674
675	def import_store_info(self, cf, connInfo):
676	"""
677	Pull any import parameters in connInfo in. We translate them either
678	into known member names or fedAddrs.
679	"""
680
681	for c in connInfo:
682	for p in [ p for p in c.get('parameter', []) \
683	if p.get('type', '') == 'input']:
684	name = p.get('name', None)
685	key = p.get('key', None)
686	store = p.get('store', None)
687
688	if name and key and store :
689	req = { 'name': key, 'wait': True }
690	r = self.call_GetValue(store, req, cf)
691	r = r.get('GetValueResponseBody', None)
692	if r :
693	if r.get('name', '') == key:
694	v = r.get('value', None)
695	if v is not None:
696	if name == 'peer':
697	c['peer'] = v
698	else:
699	if c.has_key('fedAttr'):
700	c['fedAttr'].append({
701	'attribute': name, 'value': v})
702	else:
703	c['fedAttr']= [{
704	'attribute': name, 'value': v}]
705	else:
706	raise service_error(service_error.internal,
707	'None value exported for %s' % key)
708	else:
709	raise service_error(service_error.internal,
710	'Different name returned for %s: %s' \
711	% (key, r.get('name','')))
712	else:
713	raise service_error(service_error.internal,
714	'Badly formatted response: no GetValueResponseBody')
715	else:
716	raise service_error(service_error.internal,
717	'Bad Services missing info for import %s' % c)
718
719	def generate_portal_configs(self, topo, pubkey_base, secretkey_base,
720	tmpdir, master, leid, connInfo, services):
721
722	def conninfo_to_dict(key, info):
723	"""
724	Make a cpoy of the connection information about key, and flatten it
725	into a single dict by parsing out any feddAttrs.
726	"""
727
728	rv = None
729	for i in info:
730	if key == i.get('portal', "") or \
731	key in [e.get('element', "") \
732	for e in i.get('member', [])]:
733	rv = i.copy()
734	break
735
736	else:
737	return rv
738
739	if 'fedAttr' in rv:
740	for a in rv['fedAttr']:
741	attr = a.get('attribute', "")
742	val = a.get('value', "")
743	if attr and attr not in rv:
744	rv[attr] = val
745	del rv['fedAttr']
746	return rv
747
748	# XXX: un hardcode this
749	def client_null(f, s):
750	print >>f, "Service: %s" % s['name']
751
752	def client_smb(f, s):
753	print >>f, "Service: %s" % s['name']
754	smbshare = None
755	smbuser = None
756	smbproj = None
757	for a in s.get('fedAttr', []):
758	if a.get('attribute', '') == 'SMBSHARE':
759	smbshare = a.get('value', None)
760	elif a.get('attribute', '') == 'SMBUSER':
761	smbuser = a.get('value', None)
762	elif a.get('attribute', '') == 'SMBPROJ':
763	smbproj = a.get('value', None)
764
765	if all((smbshare, smbuser, smbproj)):
766	print >>f, "SMBshare: %s" % smbshare
767	print >>f, "ProjectUser: %s" % smbuser
768	print >>f, "ProjectName: %s" % smbproj
769
770	client_service_out = {
771	'SMB': client_smb,
772	'tmcd': client_null,
773	'seer': client_null,
774	'userconfig': client_null,
775	}
776	# XXX: end un hardcode this
777
778
779	seer_out = False
780	client_out = False
781	for e in [ e for e in topo.elements \
782	if isinstance(e, topdl.Computer) and e.get_attribute('portal')]:
783	myname = e.name[0]
784	type = e.get_attribute('portal_type')
785
786	info = conninfo_to_dict(myname, connInfo)
787
788	if not info:
789	raise service_error(service_error.req,
790	"No connectivity info for %s" % myname)
791
792	peer = info.get('peer', "")
793	ldomain = self.domain;
794
795	mexp = info.get('masterexperiment',"")
796	mproj, meid = mexp.split("/", 1)
797	mdomain = info.get('masterdomain',"")
798	muser = info.get('masteruser','root')
799	smbshare = info.get('smbshare', 'USERS')
800	ssh_port = info.get('ssh_port', '22')
801
802	active = info.get('active', 'False')
803
804	cfn = "%s/%s.gw.conf" % (tmpdir, myname.lower())
805	tunnelconfig = self.attrs.has_key('TunnelCfg')
806	try:
807	f = open(cfn, "w")
808	if active == 'True':
809	print >>f, "active: True"
810	print >>f, "ssh_port: %s" % ssh_port
811	if type in ('control', 'both'):
812	for s in [s for s in services \
813	if s.get('name', "") in self.imports]:
814	p = urlparse(s.get('server', 'http://localhost'))
815	print >>f, 'port: remote:%s:%s:%s' % \
816	(p.port, p.hostname, p.port)
817
818	if tunnelconfig:
819	print >>f, "tunnelip: %s" % tunnelconfig
820	# XXX: send this an fedattr
821	#print >>f, "seercontrol: control.%s.%s%s" % \
822	#(meid.lower(), mproj.lower(), mdomain)
823	print >>f, "peer: %s" % peer.lower()
824	print >>f, "ssh_pubkey: /usr/local/federation/etc/%s" % \
825	pubkey_base
826	print >>f, "ssh_privkey: /usr/local/federation/etc/%s" % \
827	secretkey_base
828	f.close()
829	except IOError, e:
830	raise service_error(service_error.internal,
831	"Can't write protal config %s: %s" % (cfn, e))
832
833	# XXX: This little seer config file needs to go away.
834	if not seer_out:
835	try:
836	seerfn = "%s/seer.conf" % tmpdir
837	f = open(seerfn, "w")
838	if not master:
839	print >>f, "ControlNode: control.%s.%s%s" % \
840	(meid.lower(), mproj.lower(), mdomain)
841	print >>f, "ExperimentID: %s" % mexp
842	f.close()
843	except IOError, e:
844	raise service_error(service_error.internal,
845	"Can't write seer.conf: %s" %e)
846	seer_out = True
847
848	if not client_out and type in ('control', 'both'):
849	try:
850	f = open("%s/client.conf" % tmpdir, "w")
851	print >>f, "ControlGateway: %s%s" % \
852	(myname.lower(), ldomain.lower())
853	for s in services:
854	if s.get('name',"") in self.imports and \
855	s.get('visibility','') == 'import':
856	client_service_out[s['name']](f, s)
857	# Does seer need this?
858	# print >>f, "ExperimentID: %s/%s" % (mproj, meid)
859	f.close()
860	except IOError, e:
861	raise service_error(service_error.internal,
862	"Cannot write client.conf: %s" %s)
863	client_out = True
864
865
866	def generate_rspec(self, topo, softdir, master, connInfo):
867	t = topo.clone()
868
869	starts = { }
870
871	# The startcmds for master and slave testbeds
872	if master:
873	gate_cmd = self.attrs.get('MasterConnectorStartCmd', '/bin/true')
874	node_cmd = self.attrs.get('MasterNodeStartCmd', 'bin/true')
875	else:
876	gate_cmd = self.attrs.get('SlaveConnectorStartCmd', '/bin/true')
877	node_cmd = self.attrs.get('SlaveNodeStartCmd', 'bin/true')
878
879	# Weed out the things we aren't going to instantiate: Segments, portal
880	# substrates, and portal interfaces. (The copy in the for loop allows
881	# us to delete from e.elements in side the for loop). While we're
882	# touching all the elements, we also adjust paths from the original
883	# testbed to local testbed paths and put the federation commands and
884	# startcommands into a dict so we can start them manually later.
885	# ProtoGENI requires setup before the federation commands run, so we
886	# run them by hand after we've seeded configurations.
887	for e in [e for e in t.elements]:
888	if isinstance(e, topdl.Segment):
889	t.elements.remove(e)
890	# Fix software paths
891	for s in getattr(e, 'software', []):
892	s.location = re.sub("^.*/", softdir, s.location)
893	if isinstance(e, topdl.Computer):
894	if e.get_attribute('portal') and gate_cmd:
895	# Portals never have a user-specified start command
896	starts[e.name[0]] = gate_cmd
897	elif node_cmd:
898	if e.get_attribute('startup'):
899	starts[e.name[0]] = "%s \\$USER '%s'" % \
900	(node_cmd, e.get_attribute('startup'))
901	e.remove_attribute('startup')
902	else:
903	starts[e.name[0]] = node_cmd
904
905	# Remove portal interfaces
906	e.interface = [i for i in e.interface \
907	if not i.get_attribute('portal')]
908
909	t.substrates = [ s.clone() for s in t.substrates ]
910	t.incorporate_elements()
911
912	# Customize the ns2 output for local portal commands and images
913	filters = []
914
915	# NB: these are extra commands issued for the node, not the startcmds
916	if master: cmd = self.attrs.get('MasterConnectorCmd', '')
917	else: cmd = self.attrs.get('SlaveConnectorCmd', '')
918
919	if cmd:
920	filters.append(topdl.generate_portal_command_filter(cmd))
921
922	# Convert to rspec and return it
923	exp_rspec = topdl.topology_to_rspec(t, filters)
924
925	return exp_rspec
926
927	def StartSegment(self, req, fid):
928
929	configs = set(('hosts', 'ssh_pubkey', 'ssh_secretkey'))
930
931	err = None # Any service_error generated after tmpdir is created
932	rv = None # Return value from segment creation
933
934	try:
935	req = req['StartSegmentRequestBody']
936	except KeyError:
937	raise service_error(service_error.req, "Badly formed request")
938
939	connInfo = req.get('connection', [])
940	services = req.get('service', [])
941	auth_attr = req['allocID']['fedid']
942	aid = "%s" % auth_attr
943	attrs = req.get('fedAttr', [])
944	if not self.auth.check_attribute(fid, auth_attr):
945	raise service_error(service_error.access, "Access denied")
946	else:
947	# See if this is a replay of an earlier succeeded StartSegment -
948	# sometimes SSL kills 'em. If so, replay the response rather than
949	# redoing the allocation.
950	self.state_lock.acquire()
951	retval = self.allocation[aid].get('started', None)
952	self.state_lock.release()
953	if retval:
954	self.log.warning("Duplicate StartSegment for %s: " % aid + \
955	"replaying response")
956	return retval
957
958
959	if req.has_key('segmentdescription') and \
960	req['segmentdescription'].has_key('topdldescription'):
961	topo = \
962	topdl.Topology(**req['segmentdescription']['topdldescription'])
963	else:
964	raise service_error(service_error.req,
965	"Request missing segmentdescription'")
966
967	master = req.get('master', False)
968
969	certfile = "%s/%s.pem" % (self.certdir, auth_attr)
970	try:
971	tmpdir = tempfile.mkdtemp(prefix="access-")
972	softdir = "%s/software" % tmpdir
973	except IOError:
974	raise service_error(service_error.internal, "Cannot create tmp dir")
975
976	# Try block alllows us to clean up temporary files.
977	try:
978	sw = set()
979	for e in topo.elements:
980	for s in getattr(e, 'software', []):
981	sw.add(s.location)
982	os.mkdir(softdir)
983	for s in sw:
984	self.log.debug("Retrieving %s" % s)
985	try:
986	get_url(s, certfile, softdir)
987	except:
988	t, v, st = sys.exc_info()
989	raise service_error(service_error.internal,
990	"Error retrieving %s: %s" % (s, v))
991
992	# Copy local portal node software to the tempdir
993	for s in (self.portal_software, self.federation_software):
994	for l, f in s:
995	base = os.path.basename(f)
996	copy_file(f, "%s/%s" % (softdir, base))
997
998	# Ick. Put this python rpm in a place that it will get moved into
999	# the staging area. It's a hack to install a modern (in a Roman
1000	# sense of modern) python on ProtoGENI
1001	python_rpm ="python2.4-2.4-1pydotorg.i586.rpm"
1002	if os.access("./%s" % python_rpm, os.R_OK):
1003	copy_file("./%s" % python_rpm, "%s/%s" % (softdir, python_rpm))
1004
1005	for a in attrs:
1006	if a['attribute'] in configs:
1007	try:
1008	self.log.debug("Retrieving %s" % a['value'])
1009	get_url(a['value'], certfile, tmpdir)
1010	except:
1011	t, v, st = sys.exc_info()
1012	raise service_error(service_error.internal,
1013	"Error retrieving %s: %s" % (s, v))
1014	if a['attribute'] == 'ssh_pubkey':
1015	pubkey_base = a['value'].rpartition('/')[2]
1016	if a['attribute'] == 'ssh_secretkey':
1017	secretkey_base = a['value'].rpartition('/')[2]
1018	if a['attribute'] == 'experiment_name':
1019	ename = a['value']
1020
1021	# If the userconf service was imported, collect the configuration
1022	# data.
1023	for s in services:
1024	if s.get("name", "") == 'userconfig' \
1025	and s.get('visibility',"") == 'import':
1026
1027	# Collect ther server and certificate info.
1028	u = s.get('server', None)
1029	for a in s.get('fedAttr', []):
1030	if a.get('attribute',"") == 'cert':
1031	cert = a.get('value', None)
1032	break
1033	else:
1034	cert = None
1035
1036	if cert:
1037	# Make a temporary certificate file for get_url. The
1038	# finally clause removes it whether something goes
1039	# wrong (including an exception from get_url) or not.
1040	try:
1041	tfos, tn = tempfile.mkstemp(suffix=".pem")
1042	tf = os.fdopen(tfos, 'w')
1043	print >>tf, cert
1044	tf.close()
1045	get_url(u, tn, tmpdir, "userconf")
1046	except IOError, e:
1047	raise service_error(service.error.internal,
1048	"Cannot create temp file for " +
1049	"userconfig certificates: %s e")
1050	except:
1051	t, v, st = sys.exc_info()
1052	raise service_error(service_error.internal,
1053	"Error retrieving %s: %s" % (u, v))
1054	finally:
1055	if tn: os.remove(tn)
1056	else:
1057	raise service_error(service_error.req,
1058	"No certificate for retreiving userconfig")
1059	break
1060
1061	self.state_lock.acquire()
1062	if self.allocation.has_key(aid):
1063	cf, user, ssh_key, cpw = self.allocation[aid]['credentials']
1064	self.allocation[aid]['experiment'] = ename
1065	self.allocation[aid]['log'] = [ ]
1066	# Create a logger that logs to the experiment's state object as
1067	# well as to the main log file.
1068	alloc_log = logging.getLogger('fedd.access.%s' % ename)
1069	h = logging.StreamHandler(
1070	list_log.list_log(self.allocation[aid]['log']))
1071	# XXX: there should be a global one of these rather than
1072	# repeating the code.
1073	h.setFormatter(logging.Formatter(
1074	"%(asctime)s %(name)s %(message)s",
1075	'%d %b %y %H:%M:%S'))
1076	alloc_log.addHandler(h)
1077	self.write_state()
1078	else:
1079	self.log.error("No allocation for %s!?" % aid)
1080	self.state_lock.release()
1081
1082	# XXX: we really need to put the import and connection info
1083	# generation off longer.
1084	self.import_store_info(certfile, connInfo)
1085	#self.generate_portal_configs(topo, pubkey_base,
1086	#secretkey_base, tmpdir, master, ename, connInfo,
1087	#services)
1088	rspec = self.generate_rspec(topo, "%s/%s/" \
1089	% (self.staging_dir, ename), master, connInfo)
1090
1091	starter = self.start_segment(keyfile=ssh_key,
1092	debug=self.create_debug, log=alloc_log,
1093	ch_url = self.ch_url, sa_url=self.sa_url,
1094	cm_url=self.cm_url)
1095	rv = starter(self, aid, user, rspec, pubkey_base, secretkey_base,
1096	master, ename,
1097	"%s/%s" % (self.staging_dir, ename), tmpdir, cf, cpw,
1098	certfile, topo, connInfo, services)
1099	# Copy the assigned names into the return topology
1100	rvtopo = topo.clone()
1101	for e in [ e for e in rvtopo.elements \
1102	if isinstance(e, topdl.Computer)]:
1103	for n in e.name:
1104	if n in starter.node:
1105	e.set_attribute('hostname', starter.node[n])
1106	except service_error, e:
1107	err = e
1108	except e:
1109	err = service_error(service_error.internal, str(e))
1110
1111	# Walk up tmpdir, deleting as we go
1112	if self.cleanup:
1113	self.log.debug("[StartSegment]: removing %s" % tmpdir)
1114	for path, dirs, files in os.walk(tmpdir, topdown=False):
1115	for f in files:
1116	os.remove(os.path.join(path, f))
1117	for d in dirs:
1118	os.rmdir(os.path.join(path, d))
1119	os.rmdir(tmpdir)
1120	else:
1121	self.log.debug("[StartSegment]: not removing %s" % tmpdir)
1122
1123	if rv:
1124	# Grab the log (this is some anal locking, but better safe than
1125	# sorry)
1126	self.state_lock.acquire()
1127	logv = "".join(self.allocation[aid]['log'])
1128	# It's possible that the StartSegment call gets retried (!).
1129	# if the 'started' key is in the allocation, we'll return it rather
1130	# than redo the setup.
1131	self.allocation[aid]['started'] = {
1132	'allocID': req['allocID'],
1133	'allocationLog': logv,
1134	}
1135	retval = copy.copy(self.allocation[aid]['started'])
1136	self.write_state()
1137	retval['segmentdescription'] = \
1138	{ 'topdldescription': rvtopo.to_dict() }
1139	self.state_lock.release()
1140
1141	return retval
1142	elif err:
1143	raise service_error(service_error.federant,
1144	"Swapin failed: %s" % err)
1145	else:
1146	raise service_error(service_error.federant, "Swapin failed")
1147
1148	def TerminateSegment(self, req, fid):
1149	try:
1150	req = req['TerminateSegmentRequestBody']
1151	except KeyError:
1152	raise service_error(service_error.req, "Badly formed request")
1153
1154	auth_attr = req['allocID']['fedid']
1155	aid = "%s" % auth_attr
1156	attrs = req.get('fedAttr', [])
1157	if not self.auth.check_attribute(fid, auth_attr):
1158	raise service_error(service_error.access, "Access denied")
1159
1160	self.state_lock.acquire()
1161	if self.allocation.has_key(aid):
1162	cf, user, ssh_key, cpw = self.allocation[aid]['credentials']
1163	slice_cred = self.allocation[aid].get('slice_credential', None)
1164	ename = self.allocation[aid].get('experiment', None)
1165	else:
1166	cf, user, ssh_key, cpw = (None, None, None, None)
1167	slice_cred = None
1168	ename = None
1169	self.state_lock.release()
1170
1171	if ename:
1172	staging = "%s/%s" % ( self.staging_dir, ename)
1173	else:
1174	self.log.warn("Can't find experiment name for %s" % aid)
1175	staging = None
1176
1177	stopper = self.stop_segment(keyfile=ssh_key, debug=self.create_debug,
1178	ch_url = self.ch_url, sa_url=self.sa_url, cm_url=self.cm_url)
1179	stopper(self, user, staging, slice_cred, cf, cpw)
1180	return { 'allocID': req['allocID'] }
1181
1182	def RenewSlices(self):
1183	self.log.info("Scanning for slices to renew")
1184	self.state_lock.acquire()
1185	aids = self.allocation.keys()
1186	self.state_lock.release()
1187
1188	for aid in aids:
1189	self.state_lock.acquire()
1190	if self.allocation.has_key(aid):
1191	name = self.allocation[aid].get('slice_name', None)
1192	scred = self.allocation[aid].get('slice_credential', None)
1193	cf, user, ssh_key, cpw = self.allocation[aid]['credentials']
1194	else:
1195	name = None
1196	scred = None
1197	self.state_lock.release()
1198
1199	# There's a ProtoGENI slice associated with the segment; renew it.
1200	if name and scred:
1201	renewer = self.renew_segment(log=self.log,
1202	debug=self.create_debug, keyfile=ssh_key,
1203	cm_url = self.cm_url, sa_url = self.sa_url,
1204	ch_url = self.ch_url)
1205	new_scred = renewer(name, scred, self.renewal_interval, cf, cpw)
1206	if new_scred:
1207	self.log.info("Slice %s renewed until %s GMT" % \
1208	(name, time.asctime(time.gmtime(\
1209	time.time()+self.renewal_interval))))
1210	self.state_lock.acquire()
1211	if self.allocation.has_key(aid):
1212	self.allocation[aid]['slice_credential'] = new_scred
1213	self.state_lock.release()
1214	else:
1215	self.log.info("Failed to renew slice %s " % name)
1216
1217	# Let's do this all again soon. (4 tries before the slices time out)
1218	t = Timer(self.renewal_interval/4, self.RenewSlices)
1219	t.start()

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