1 | #!/usr/local/bin/python |
---|
2 | |
---|
3 | import os,sys |
---|
4 | import re |
---|
5 | import string |
---|
6 | import copy |
---|
7 | import pickle |
---|
8 | import logging |
---|
9 | |
---|
10 | from threading import * |
---|
11 | |
---|
12 | from util import * |
---|
13 | from allocate_project import allocate_project_local, allocate_project_remote |
---|
14 | from access_project import access_project |
---|
15 | from fedid import fedid, generate_fedid |
---|
16 | from authorizer import authorizer |
---|
17 | from service_error import service_error |
---|
18 | from remote_service import xmlrpc_handler, soap_handler, service_caller |
---|
19 | |
---|
20 | |
---|
21 | # Make log messages disappear if noone configures a fedd logger |
---|
22 | class nullHandler(logging.Handler): |
---|
23 | def emit(self, record): pass |
---|
24 | |
---|
25 | fl = logging.getLogger("fedd.access") |
---|
26 | fl.addHandler(nullHandler()) |
---|
27 | |
---|
28 | class access: |
---|
29 | """ |
---|
30 | The implementation of access control based on mapping users to projects. |
---|
31 | |
---|
32 | Users can be mapped to existing projects or have projects created |
---|
33 | dynamically. This implements both direct requests and proxies. |
---|
34 | """ |
---|
35 | |
---|
36 | class parse_error(RuntimeError): pass |
---|
37 | |
---|
38 | |
---|
39 | proxy_RequestAccess= service_caller('RequestAccess') |
---|
40 | proxy_ReleaseAccess= service_caller('ReleaseAccess') |
---|
41 | |
---|
42 | def __init__(self, config=None, auth=None): |
---|
43 | """ |
---|
44 | Initializer. Pulls parameters out of the ConfigParser's access section. |
---|
45 | """ |
---|
46 | |
---|
47 | # Make sure that the configuration is in place |
---|
48 | if not config: |
---|
49 | raise RunTimeError("No config to fedd.access") |
---|
50 | |
---|
51 | self.project_priority = config.getboolean("access", "project_priority") |
---|
52 | self.allow_proxy = config.getboolean("access", "allow_proxy") |
---|
53 | |
---|
54 | self.boss = config.get("access", "boss") |
---|
55 | self.ops = config.get("access", "ops") |
---|
56 | self.domain = config.get("access", "domain") |
---|
57 | self.fileserver = config.get("access", "fileserver") |
---|
58 | self.eventserver = config.get("access", "eventserver") |
---|
59 | |
---|
60 | self.attrs = { } |
---|
61 | self.access = { } |
---|
62 | self.restricted = [ ] |
---|
63 | self.projects = { } |
---|
64 | self.keys = { } |
---|
65 | self.types = { } |
---|
66 | self.allocation = { } |
---|
67 | self.state = { |
---|
68 | 'projects': self.projects, |
---|
69 | 'allocation' : self.allocation, |
---|
70 | 'keys' : self.keys, |
---|
71 | 'types': self.types |
---|
72 | } |
---|
73 | self.log = logging.getLogger("fedd.access") |
---|
74 | set_log_level(config, "access", self.log) |
---|
75 | self.state_lock = Lock() |
---|
76 | |
---|
77 | if auth: self.auth = auth |
---|
78 | else: |
---|
79 | self.log.error(\ |
---|
80 | "[access]: No authorizer initialized, creating local one.") |
---|
81 | auth = authorizer() |
---|
82 | |
---|
83 | tb = config.get('access', 'testbed') |
---|
84 | if tb: self.testbed = [ t.strip() for t in tb.split(',') ] |
---|
85 | else: self.testbed = [ ] |
---|
86 | |
---|
87 | if config.has_option("access", "accessdb"): |
---|
88 | self.read_access(config.get("access", "accessdb")) |
---|
89 | |
---|
90 | self.state_filename = config.get("access", "access_state") |
---|
91 | self.read_state() |
---|
92 | |
---|
93 | # Keep cert_file and cert_pwd coming from the same place |
---|
94 | self.cert_file = config.get("access", "cert_file") |
---|
95 | if self.cert_file: |
---|
96 | self.sert_pwd = config.get("access", "cert_pw") |
---|
97 | else: |
---|
98 | self.cert_file = config.get("globals", "cert_file") |
---|
99 | self.sert_pwd = config.get("globals", "cert_pw") |
---|
100 | |
---|
101 | self.trusted_certs = config.get("access", "trusted_certs") or \ |
---|
102 | config.get("globals", "trusted_certs") |
---|
103 | |
---|
104 | self.soap_services = {\ |
---|
105 | 'RequestAccess': soap_handler("RequestAccess", self.RequestAccess), |
---|
106 | 'ReleaseAccess': soap_handler("ReleaseAccess", self.ReleaseAccess), |
---|
107 | } |
---|
108 | self.xmlrpc_services = {\ |
---|
109 | 'RequestAccess': xmlrpc_handler('RequestAccess', |
---|
110 | self.RequestAccess), |
---|
111 | 'ReleaseAccess': xmlrpc_handler('ReleaseAccess', |
---|
112 | self.ReleaseAccess), |
---|
113 | } |
---|
114 | |
---|
115 | |
---|
116 | if not config.has_option("allocate", "uri"): |
---|
117 | self.allocate_project = \ |
---|
118 | allocate_project_local(config, auth) |
---|
119 | else: |
---|
120 | self.allocate_project = \ |
---|
121 | allocate_project_remote(config, auth) |
---|
122 | |
---|
123 | # If the project allocator exports services, put them in this object's |
---|
124 | # maps so that classes that instantiate this can call the services. |
---|
125 | self.soap_services.update(self.allocate_project.soap_services) |
---|
126 | self.xmlrpc_services.update(self.allocate_project.xmlrpc_services) |
---|
127 | |
---|
128 | |
---|
129 | def read_access(self, config): |
---|
130 | """ |
---|
131 | Read a configuration file and set internal parameters. |
---|
132 | |
---|
133 | The format is more complex than one might hope. The basic format is |
---|
134 | attribute value pairs separated by colons(:) on a signle line. The |
---|
135 | attributes in bool_attrs, emulab_attrs and id_attrs can all be set |
---|
136 | directly using the name: value syntax. E.g. |
---|
137 | boss: hostname |
---|
138 | sets self.boss to hostname. In addition, there are access lines of the |
---|
139 | form (tb, proj, user) -> (aproj, auser) that map the first tuple of |
---|
140 | names to the second for access purposes. Names in the key (left side) |
---|
141 | can include "<NONE> or <ANY>" to act as wildcards or to require the |
---|
142 | fields to be empty. Similarly aproj or auser can be <SAME> or |
---|
143 | <DYNAMIC> indicating that either the matching key is to be used or a |
---|
144 | dynamic user or project will be created. These names can also be |
---|
145 | federated IDs (fedid's) if prefixed with fedid:. Finally, the aproj |
---|
146 | can be followed with a colon-separated list of node types to which that |
---|
147 | project has access (or will have access if dynamic). |
---|
148 | Testbed attributes outside the forms above can be given using the |
---|
149 | format attribute: name value: value. The name is a single word and the |
---|
150 | value continues to the end of the line. Empty lines and lines startin |
---|
151 | with a # are ignored. |
---|
152 | |
---|
153 | Parsing errors result in a self.parse_error exception being raised. |
---|
154 | """ |
---|
155 | lineno=0 |
---|
156 | name_expr = "["+string.ascii_letters + string.digits + "\.\-_]+" |
---|
157 | fedid_expr = "fedid:[" + string.hexdigits + "]+" |
---|
158 | key_name = "(<ANY>|<NONE>|"+fedid_expr + "|"+ name_expr + ")" |
---|
159 | access_proj = "(<DYNAMIC>(?::" + name_expr +")*|"+ \ |
---|
160 | "<SAME>" + "(?::" + name_expr + ")*|" + \ |
---|
161 | fedid_expr + "(?::" + name_expr + ")*|" + \ |
---|
162 | name_expr + "(?::" + name_expr + ")*)" |
---|
163 | access_name = "(<DYNAMIC>|<SAME>|" + fedid_expr + "|"+ name_expr + ")" |
---|
164 | |
---|
165 | restricted_re = re.compile("restricted:\s*(.*)", re.IGNORECASE) |
---|
166 | attr_re = re.compile('attribute:\s*([\._\-a-z0-9]+)\s+value:\s*(.*)', |
---|
167 | re.IGNORECASE) |
---|
168 | access_re = re.compile('\('+key_name+'\s*,\s*'+key_name+'\s*,\s*'+ |
---|
169 | key_name+'\s*\)\s*->\s*\('+access_proj + '\s*,\s*' + |
---|
170 | access_name + '\s*,\s*' + access_name + '\s*\)', re.IGNORECASE) |
---|
171 | |
---|
172 | def parse_name(n): |
---|
173 | if n.startswith('fedid:'): return fedid(hexstr=n[len('fedid:'):]) |
---|
174 | else: return n |
---|
175 | |
---|
176 | def auth_name(n): |
---|
177 | if isinstance(n, basestring): |
---|
178 | if n =='<any>' or n =='<none>': return None |
---|
179 | else: return unicode(n) |
---|
180 | else: |
---|
181 | return n |
---|
182 | |
---|
183 | f = open(config, "r"); |
---|
184 | for line in f: |
---|
185 | lineno += 1 |
---|
186 | line = line.strip(); |
---|
187 | if len(line) == 0 or line.startswith('#'): |
---|
188 | continue |
---|
189 | |
---|
190 | # Extended (attribute: x value: y) attribute line |
---|
191 | m = attr_re.match(line) |
---|
192 | if m != None: |
---|
193 | attr, val = m.group(1,2) |
---|
194 | self.attrs[attr] = val |
---|
195 | continue |
---|
196 | |
---|
197 | # Restricted entry |
---|
198 | m = restricted_re.match(line) |
---|
199 | if m != None: |
---|
200 | val = m.group(1) |
---|
201 | self.restricted.append(val) |
---|
202 | continue |
---|
203 | |
---|
204 | # Access line (t, p, u) -> (ap, cu, su) line |
---|
205 | m = access_re.match(line) |
---|
206 | if m != None: |
---|
207 | access_key = tuple([ parse_name(x) for x in m.group(1,2,3)]) |
---|
208 | auth_key = tuple([ auth_name(x) for x in access_key]) |
---|
209 | aps = m.group(4).split(":"); |
---|
210 | if aps[0] == 'fedid:': |
---|
211 | del aps[0] |
---|
212 | aps[0] = fedid(hexstr=aps[0]) |
---|
213 | |
---|
214 | cu = parse_name(m.group(5)) |
---|
215 | su = parse_name(m.group(6)) |
---|
216 | |
---|
217 | access_val = (access_project(aps[0], aps[1:]), |
---|
218 | parse_name(m.group(5)), parse_name(m.group(6))) |
---|
219 | |
---|
220 | self.access[access_key] = access_val |
---|
221 | self.auth.set_attribute(auth_key, "access") |
---|
222 | continue |
---|
223 | |
---|
224 | # Nothing matched to here: unknown line - raise exception |
---|
225 | f.close() |
---|
226 | raise self.parse_error("Unknown statement at line %d of %s" % \ |
---|
227 | (lineno, config)) |
---|
228 | f.close() |
---|
229 | |
---|
230 | def get_users(self, obj): |
---|
231 | """ |
---|
232 | Return a list of the IDs of the users in dict |
---|
233 | """ |
---|
234 | if obj.has_key('user'): |
---|
235 | return [ unpack_id(u['userID']) \ |
---|
236 | for u in obj['user'] if u.has_key('userID') ] |
---|
237 | else: |
---|
238 | return None |
---|
239 | |
---|
240 | def write_state(self): |
---|
241 | if self.state_filename: |
---|
242 | try: |
---|
243 | f = open(self.state_filename, 'w') |
---|
244 | pickle.dump(self.state, f) |
---|
245 | except IOError, e: |
---|
246 | self.log.error("Can't write file %s: %s" % \ |
---|
247 | (self.state_filename, e)) |
---|
248 | except pickle.PicklingError, e: |
---|
249 | self.log.error("Pickling problem: %s" % e) |
---|
250 | except TypeError, e: |
---|
251 | self.log.error("Pickling problem (TypeError): %s" % e) |
---|
252 | |
---|
253 | |
---|
254 | def read_state(self): |
---|
255 | """ |
---|
256 | Read a new copy of access state. Old state is overwritten. |
---|
257 | |
---|
258 | State format is a simple pickling of the state dictionary. |
---|
259 | """ |
---|
260 | if self.state_filename: |
---|
261 | try: |
---|
262 | f = open(self.state_filename, "r") |
---|
263 | self.state = pickle.load(f) |
---|
264 | |
---|
265 | self.allocation = self.state['allocation'] |
---|
266 | self.projects = self.state['projects'] |
---|
267 | self.keys = self.state['keys'] |
---|
268 | self.types = self.state['types'] |
---|
269 | |
---|
270 | self.log.debug("[read_state]: Read state from %s" % \ |
---|
271 | self.state_filename) |
---|
272 | except IOError, e: |
---|
273 | self.log.warning(("[read_state]: No saved state: " +\ |
---|
274 | "Can't open %s: %s") % (self.state_filename, e)) |
---|
275 | except EOFError, e: |
---|
276 | self.log.warning(("[read_state]: " +\ |
---|
277 | "Empty or damaged state file: %s:") % \ |
---|
278 | self.state_filename) |
---|
279 | except pickle.UnpicklingError, e: |
---|
280 | self.log.warning(("[read_state]: No saved state: " + \ |
---|
281 | "Unpickling failed: %s") % e) |
---|
282 | |
---|
283 | # Add the ownership attributes to the authorizer. Note that the |
---|
284 | # indices of the allocation dict are strings, but the attributes are |
---|
285 | # fedids, so there is a conversion. |
---|
286 | for k in self.allocation.keys(): |
---|
287 | for o in self.allocation[k].get('owners', []): |
---|
288 | self.auth.set_attribute(o, fedid(hexstr=k)) |
---|
289 | |
---|
290 | |
---|
291 | def permute_wildcards(self, a, p): |
---|
292 | """Return a copy of a with various fields wildcarded. |
---|
293 | |
---|
294 | The bits of p control the wildcards. A set bit is a wildcard |
---|
295 | replacement with the lowest bit being user then project then testbed. |
---|
296 | """ |
---|
297 | if p & 1: user = ["<any>"] |
---|
298 | else: user = a[2] |
---|
299 | if p & 2: proj = "<any>" |
---|
300 | else: proj = a[1] |
---|
301 | if p & 4: tb = "<any>" |
---|
302 | else: tb = a[0] |
---|
303 | |
---|
304 | return (tb, proj, user) |
---|
305 | |
---|
306 | def find_access(self, search): |
---|
307 | """ |
---|
308 | Search the access DB for a match on this tuple. Return the matching |
---|
309 | access tuple and the user that matched. |
---|
310 | |
---|
311 | NB, if the initial tuple fails to match we start inserting wildcards in |
---|
312 | an order determined by self.project_priority. Try the list of users in |
---|
313 | order (when wildcarded, there's only one user in the list). |
---|
314 | """ |
---|
315 | if self.project_priority: perm = (0, 1, 2, 3, 4, 5, 6, 7) |
---|
316 | else: perm = (0, 2, 1, 3, 4, 6, 5, 7) |
---|
317 | |
---|
318 | for p in perm: |
---|
319 | s = self.permute_wildcards(search, p) |
---|
320 | # s[2] is None on an anonymous, unwildcarded request |
---|
321 | if s[2] != None: |
---|
322 | for u in s[2]: |
---|
323 | if self.access.has_key((s[0], s[1], u)): |
---|
324 | return (self.access[(s[0], s[1], u)], u) |
---|
325 | else: |
---|
326 | if self.access.has_key(s): |
---|
327 | return (self.access[s], None) |
---|
328 | return None, None |
---|
329 | |
---|
330 | def lookup_access(self, req, fid): |
---|
331 | """ |
---|
332 | Determine the allowed access for this request. Return the access and |
---|
333 | which fields are dynamic. |
---|
334 | |
---|
335 | The fedid is needed to construct the request |
---|
336 | """ |
---|
337 | # Search keys |
---|
338 | tb = None |
---|
339 | project = None |
---|
340 | user = None |
---|
341 | # Return values |
---|
342 | rp = access_project(None, ()) |
---|
343 | ru = None |
---|
344 | |
---|
345 | if req.has_key('project'): |
---|
346 | p = req['project'] |
---|
347 | if p.has_key('name'): |
---|
348 | project = unpack_id(p['name']) |
---|
349 | user = self.get_users(p) |
---|
350 | else: |
---|
351 | user = self.get_users(req) |
---|
352 | |
---|
353 | user_fedids = [ u for u in user if isinstance(u, fedid)] |
---|
354 | # Determine how the caller is representing itself. If its fedid shows |
---|
355 | # up as a project or a singleton user, let that stand. If neither the |
---|
356 | # usernames nor the project name is a fedid, the caller is a testbed. |
---|
357 | if project and isinstance(project, fedid): |
---|
358 | if project == fid: |
---|
359 | # The caller is the project (which is already in the tuple |
---|
360 | # passed in to the authorizer) |
---|
361 | owners = user_fedids |
---|
362 | owners.append(project) |
---|
363 | else: |
---|
364 | raise service_error(service_error.req, |
---|
365 | "Project asserting different fedid") |
---|
366 | else: |
---|
367 | if fid not in user_fedids: |
---|
368 | tb = fid |
---|
369 | owners = user_fedids |
---|
370 | owners.append(fid) |
---|
371 | else: |
---|
372 | if len(fedids) > 1: |
---|
373 | raise service_error(service_error.req, |
---|
374 | "User asserting different fedid") |
---|
375 | else: |
---|
376 | # Which is a singleton |
---|
377 | owners = user_fedids |
---|
378 | # Confirm authorization |
---|
379 | |
---|
380 | for u in user: |
---|
381 | self.log.debug("[lookup_access] Checking access for %s" % \ |
---|
382 | ((tb, project, u),)) |
---|
383 | if self.auth.check_attribute((tb, project, u), 'access'): |
---|
384 | self.log.debug("[lookup_access] Access granted") |
---|
385 | break |
---|
386 | else: |
---|
387 | self.log.debug("[lookup_access] Access Denied") |
---|
388 | else: |
---|
389 | raise service_error(service_error.access, "Access denied") |
---|
390 | |
---|
391 | # This maps a valid user to the Emulab projects and users to use |
---|
392 | found, user_match = self.find_access((tb, project, user)) |
---|
393 | |
---|
394 | if found == None: |
---|
395 | raise service_error(service_error.access, |
---|
396 | "Access denied - cannot map access") |
---|
397 | |
---|
398 | # resolve <dynamic> and <same> in found |
---|
399 | dyn_proj = False |
---|
400 | dyn_create_user = False |
---|
401 | dyn_service_user = False |
---|
402 | |
---|
403 | if found[0].name == "<same>": |
---|
404 | if project != None: |
---|
405 | rp.name = project |
---|
406 | else : |
---|
407 | raise service_error(\ |
---|
408 | service_error.server_config, |
---|
409 | "Project matched <same> when no project given") |
---|
410 | elif found[0].name == "<dynamic>": |
---|
411 | rp.name = None |
---|
412 | dyn_proj = True |
---|
413 | else: |
---|
414 | rp.name = found[0].name |
---|
415 | rp.node_types = found[0].node_types; |
---|
416 | |
---|
417 | if found[1] == "<same>": |
---|
418 | if user_match == "<any>": |
---|
419 | if user != None: rcu = user[0] |
---|
420 | else: raise service_error(\ |
---|
421 | service_error.server_config, |
---|
422 | "Matched <same> on anonymous request") |
---|
423 | else: |
---|
424 | rcu = user_match |
---|
425 | elif found[1] == "<dynamic>": |
---|
426 | rcu = None |
---|
427 | dyn_create_user = True |
---|
428 | else: |
---|
429 | rcu = found[1] |
---|
430 | |
---|
431 | if found[2] == "<same>": |
---|
432 | if user_match == "<any>": |
---|
433 | if user != None: rsu = user[0] |
---|
434 | else: raise service_error(\ |
---|
435 | service_error.server_config, |
---|
436 | "Matched <same> on anonymous request") |
---|
437 | else: |
---|
438 | rsu = user_match |
---|
439 | elif found[2] == "<dynamic>": |
---|
440 | rsu = None |
---|
441 | dyn_service_user = True |
---|
442 | else: |
---|
443 | rsu = found[2] |
---|
444 | |
---|
445 | return (rp, rcu, rsu), (dyn_create_user, dyn_service_user, dyn_proj),\ |
---|
446 | owners |
---|
447 | |
---|
448 | def build_response(self, alloc_id, ap): |
---|
449 | """ |
---|
450 | Create the SOAP response. |
---|
451 | |
---|
452 | Build the dictionary description of the response and use |
---|
453 | fedd_utils.pack_soap to create the soap message. ap is the allocate |
---|
454 | project message returned from a remote project allocation (even if that |
---|
455 | allocation was done locally). |
---|
456 | """ |
---|
457 | # Because alloc_id is already a fedd_services_types.IDType_Holder, |
---|
458 | # there's no need to repack it |
---|
459 | msg = { |
---|
460 | 'allocID': alloc_id, |
---|
461 | 'emulab': { |
---|
462 | 'domain': self.domain, |
---|
463 | 'boss': self.boss, |
---|
464 | 'ops': self.ops, |
---|
465 | 'fileServer': self.fileserver, |
---|
466 | 'eventServer': self.eventserver, |
---|
467 | 'project': ap['project'] |
---|
468 | }, |
---|
469 | } |
---|
470 | if len(self.attrs) > 0: |
---|
471 | msg['emulab']['fedAttr'] = \ |
---|
472 | [ { 'attribute': x, 'value' : y } \ |
---|
473 | for x,y in self.attrs.iteritems()] |
---|
474 | return msg |
---|
475 | |
---|
476 | def RequestAccess(self, req, fid): |
---|
477 | """ |
---|
478 | Handle the access request. Proxy if not for us. |
---|
479 | |
---|
480 | Parse out the fields and make the allocations or rejections if for us, |
---|
481 | otherwise, assuming we're willing to proxy, proxy the request out. |
---|
482 | """ |
---|
483 | |
---|
484 | def gateway_hardware(h): |
---|
485 | if h == 'GWTYPE': return self.attrs.get('connectorType', 'GWTYPE') |
---|
486 | else: return h |
---|
487 | |
---|
488 | # The dance to get into the request body |
---|
489 | if req.has_key('RequestAccessRequestBody'): |
---|
490 | req = req['RequestAccessRequestBody'] |
---|
491 | else: |
---|
492 | raise service_error(service_error.req, "No request!?") |
---|
493 | |
---|
494 | if req.has_key('destinationTestbed'): |
---|
495 | dt = unpack_id(req['destinationTestbed']) |
---|
496 | |
---|
497 | if dt == None or dt in self.testbed: |
---|
498 | # Request for this fedd |
---|
499 | found, dyn, owners = self.lookup_access(req, fid) |
---|
500 | restricted = None |
---|
501 | ap = None |
---|
502 | |
---|
503 | # If this is a request to export a project and the access project |
---|
504 | # is not the project to export, access denied. |
---|
505 | if req.has_key('exportProject'): |
---|
506 | ep = unpack_id(req['exportProject']) |
---|
507 | if ep != found[0].name: |
---|
508 | raise service_error(service_error.access, |
---|
509 | "Cannot export %s" % ep) |
---|
510 | |
---|
511 | # Check for access to restricted nodes |
---|
512 | if req.has_key('resources') and req['resources'].has_key('node'): |
---|
513 | resources = req['resources'] |
---|
514 | restricted = [ gateway_hardware(t) for n in resources['node'] \ |
---|
515 | if n.has_key('hardware') \ |
---|
516 | for t in n['hardware'] \ |
---|
517 | if gateway_hardware(t) \ |
---|
518 | in self.restricted ] |
---|
519 | inaccessible = [ t for t in restricted \ |
---|
520 | if t not in found[0].node_types] |
---|
521 | if len(inaccessible) > 0: |
---|
522 | raise service_error(service_error.access, |
---|
523 | "Access denied (nodetypes %s)" % \ |
---|
524 | str(', ').join(inaccessible)) |
---|
525 | # These collect the keys for the two roles into single sets, one |
---|
526 | # for creation and one for service. The sets are a simple way to |
---|
527 | # eliminate duplicates |
---|
528 | create_ssh = set([ x['sshPubkey'] \ |
---|
529 | for x in req['createAccess'] \ |
---|
530 | if x.has_key('sshPubkey')]) |
---|
531 | |
---|
532 | service_ssh = set([ x['sshPubkey'] \ |
---|
533 | for x in req['serviceAccess'] \ |
---|
534 | if x.has_key('sshPubkey')]) |
---|
535 | |
---|
536 | if len(create_ssh) > 0 and len(service_ssh) >0: |
---|
537 | if dyn[1]: |
---|
538 | # Compose the dynamic project request |
---|
539 | # (only dynamic, dynamic currently allowed) |
---|
540 | preq = { 'AllocateProjectRequestBody': \ |
---|
541 | { 'project' : {\ |
---|
542 | 'user': [ \ |
---|
543 | { \ |
---|
544 | 'access': [ { 'sshPubkey': s } \ |
---|
545 | for s in service_ssh ], |
---|
546 | 'role': "serviceAccess",\ |
---|
547 | }, \ |
---|
548 | { \ |
---|
549 | 'access': [ { 'sshPubkey': s } \ |
---|
550 | for s in create_ssh ], |
---|
551 | 'role': "experimentCreation",\ |
---|
552 | }, \ |
---|
553 | ], \ |
---|
554 | }\ |
---|
555 | }\ |
---|
556 | } |
---|
557 | if restricted != None and len(restricted) > 0: |
---|
558 | preq['AllocateProjectRequestBody']['resources'] = \ |
---|
559 | {'node': [ { 'hardware' : [ h ] } \ |
---|
560 | for h in restricted ] } |
---|
561 | ap = self.allocate_project.dynamic_project(preq) |
---|
562 | else: |
---|
563 | preq = {'StaticProjectRequestBody' : \ |
---|
564 | { 'project': \ |
---|
565 | { 'name' : { 'localname' : found[0].name },\ |
---|
566 | 'user' : [ \ |
---|
567 | {\ |
---|
568 | 'userID': { 'localname' : found[1] }, \ |
---|
569 | 'access': [ { 'sshPubkey': s } |
---|
570 | for s in create_ssh ], |
---|
571 | 'role': 'experimentCreation'\ |
---|
572 | },\ |
---|
573 | {\ |
---|
574 | 'userID': { 'localname' : found[2] }, \ |
---|
575 | 'access': [ { 'sshPubkey': s } |
---|
576 | for s in service_ssh ], |
---|
577 | 'role': 'serviceAccess'\ |
---|
578 | },\ |
---|
579 | ]}\ |
---|
580 | }\ |
---|
581 | } |
---|
582 | if restricted != None and len(restricted) > 0: |
---|
583 | preq['StaticProjectRequestBody']['resources'] = \ |
---|
584 | {'node': [ { 'hardware' : [ h ] } \ |
---|
585 | for h in restricted ] } |
---|
586 | ap = self.allocate_project.static_project(preq) |
---|
587 | else: |
---|
588 | raise service_error(service_error.req, |
---|
589 | "SSH access parameters required") |
---|
590 | # keep track of what's been added |
---|
591 | allocID, alloc_cert = generate_fedid(subj="alloc", log=self.log) |
---|
592 | aid = unicode(allocID) |
---|
593 | |
---|
594 | self.state_lock.acquire() |
---|
595 | self.allocation[aid] = { } |
---|
596 | try: |
---|
597 | pname = ap['project']['name']['localname'] |
---|
598 | except KeyError: |
---|
599 | pname = None |
---|
600 | |
---|
601 | if dyn[1]: |
---|
602 | if not pname: |
---|
603 | self.state_lock.release() |
---|
604 | raise service_error(service_error.internal, |
---|
605 | "Misformed allocation response?") |
---|
606 | if self.projects.has_key(pname): self.projects[pname] += 1 |
---|
607 | else: self.projects[pname] = 1 |
---|
608 | self.allocation[aid]['project'] = pname |
---|
609 | |
---|
610 | if ap.has_key('resources'): |
---|
611 | if not pname: |
---|
612 | self.state_lock.release() |
---|
613 | raise service_error(service_error.internal, |
---|
614 | "Misformed allocation response?") |
---|
615 | self.allocation[aid]['types'] = set() |
---|
616 | nodes = ap['resources'].get('node', []) |
---|
617 | for n in nodes: |
---|
618 | for h in n.get('hardware', []): |
---|
619 | if self.types.has_key((pname, h)): |
---|
620 | self.types[(pname, h)] += 1 |
---|
621 | else: |
---|
622 | self.types[(pname, h)] = 1 |
---|
623 | self.allocation[aid]['types'].add((pname,h)) |
---|
624 | |
---|
625 | |
---|
626 | self.allocation[aid]['keys'] = [ ] |
---|
627 | |
---|
628 | try: |
---|
629 | for u in ap['project']['user']: |
---|
630 | uname = u['userID']['localname'] |
---|
631 | for k in [ k['sshPubkey'] for k in u['access'] \ |
---|
632 | if k.has_key('sshPubkey') ]: |
---|
633 | kv = "%s:%s" % (uname, k) |
---|
634 | if self.keys.has_key(kv): self.keys[kv] += 1 |
---|
635 | else: self.keys[kv] = 1 |
---|
636 | self.allocation[aid]['keys'].append((uname, k)) |
---|
637 | except KeyError: |
---|
638 | self.state_lock.release() |
---|
639 | raise service_error(service_error.internal, |
---|
640 | "Misformed allocation response?") |
---|
641 | |
---|
642 | |
---|
643 | self.allocation[aid]['owners'] = owners |
---|
644 | self.write_state() |
---|
645 | self.state_lock.release() |
---|
646 | for o in owners: |
---|
647 | self.auth.set_attribute(o, allocID) |
---|
648 | resp = self.build_response({ 'fedid': allocID } , ap) |
---|
649 | return resp |
---|
650 | else: |
---|
651 | if self.allow_proxy: |
---|
652 | resp = self.proxy_RequestAccess.call_service(dt, req, |
---|
653 | self.cert_file, self.cert_pwd, |
---|
654 | self.trusted_certs) |
---|
655 | if resp.has_key('RequestAccessResponseBody'): |
---|
656 | return resp['RequestAccessResponseBody'] |
---|
657 | else: |
---|
658 | return None |
---|
659 | else: |
---|
660 | raise service_error(service_error.access, |
---|
661 | "Access proxying denied") |
---|
662 | |
---|
663 | def ReleaseAccess(self, req, fid): |
---|
664 | # The dance to get into the request body |
---|
665 | if req.has_key('ReleaseAccessRequestBody'): |
---|
666 | req = req['ReleaseAccessRequestBody'] |
---|
667 | else: |
---|
668 | raise service_error(service_error.req, "No request!?") |
---|
669 | |
---|
670 | if req.has_key('destinationTestbed'): |
---|
671 | dt = unpack_id(req['destinationTestbed']) |
---|
672 | else: |
---|
673 | dt = None |
---|
674 | |
---|
675 | if dt == None or dt in self.testbed: |
---|
676 | # Local request |
---|
677 | try: |
---|
678 | if req['allocID'].has_key('localname'): |
---|
679 | auth_attr = aid = req['allocID']['localname'] |
---|
680 | elif req['allocID'].has_key('fedid'): |
---|
681 | aid = unicode(req['allocID']['fedid']) |
---|
682 | auth_attr = req['allocID']['fedid'] |
---|
683 | else: |
---|
684 | raise service_error(service_error.req, |
---|
685 | "Only localnames and fedids are understood") |
---|
686 | except KeyError: |
---|
687 | raise service_error(service_error.req, "Badly formed request") |
---|
688 | |
---|
689 | self.log.debug("[access] deallocation requested for %s", aid) |
---|
690 | if not self.auth.check_attribute(fid, auth_attr): |
---|
691 | self.log.debug("[access] deallocation denied for %s", aid) |
---|
692 | raise service_error(service_error.access, "Access Denied") |
---|
693 | |
---|
694 | # If we know this allocation, reduce the reference counts and |
---|
695 | # remove the local allocations. Otherwise report an error. If |
---|
696 | # there is an allocation to delete, del_users will be a dictonary |
---|
697 | # of sets where the key is the user that owns the keys in the set. |
---|
698 | # We use a set to avoid duplicates. del_project is just the name |
---|
699 | # of any dynamic project to delete. We're somewhat lazy about |
---|
700 | # deleting authorization attributes. Having access to something |
---|
701 | # that doesn't exist isn't harmful. |
---|
702 | del_users = { } |
---|
703 | del_project = None |
---|
704 | del_types = set() |
---|
705 | |
---|
706 | if self.allocation.has_key(aid): |
---|
707 | self.log.debug("Found allocation for %s" %aid) |
---|
708 | self.state_lock.acquire() |
---|
709 | for k in self.allocation[aid]['keys']: |
---|
710 | kk = "%s:%s" % k |
---|
711 | self.keys[kk] -= 1 |
---|
712 | if self.keys[kk] == 0: |
---|
713 | if not del_users.has_key(k[0]): |
---|
714 | del_users[k[0]] = set() |
---|
715 | del_users[k[0]].add(k[1]) |
---|
716 | del self.keys[kk] |
---|
717 | |
---|
718 | if self.allocation[aid].has_key('project'): |
---|
719 | pname = self.allocation[aid]['project'] |
---|
720 | self.projects[pname] -= 1 |
---|
721 | if self.projects[pname] == 0: |
---|
722 | del_project = pname |
---|
723 | del self.projects[pname] |
---|
724 | |
---|
725 | if self.allocation[aid].has_key('types'): |
---|
726 | for t in self.allocation[aid]['types']: |
---|
727 | self.types[t] -= 1 |
---|
728 | if self.types[t] == 0: |
---|
729 | if not del_project: del_project = t[0] |
---|
730 | del_types.add(t[1]) |
---|
731 | del self.types[t] |
---|
732 | |
---|
733 | del self.allocation[aid] |
---|
734 | self.write_state() |
---|
735 | self.state_lock.release() |
---|
736 | # If we actually have resources to deallocate, prepare the call. |
---|
737 | if del_project or del_users: |
---|
738 | msg = { 'project': { }} |
---|
739 | if del_project: |
---|
740 | msg['project']['name']= {'localname': del_project} |
---|
741 | users = [ ] |
---|
742 | for u in del_users.keys(): |
---|
743 | users.append({ 'userID': { 'localname': u },\ |
---|
744 | 'access' : \ |
---|
745 | [ {'sshPubkey' : s } for s in del_users[u]]\ |
---|
746 | }) |
---|
747 | if users: |
---|
748 | msg['project']['user'] = users |
---|
749 | if len(del_types) > 0: |
---|
750 | msg['resources'] = { 'node': \ |
---|
751 | [ {'hardware': [ h ] } for h in del_types ]\ |
---|
752 | } |
---|
753 | if self.allocate_project.release_project: |
---|
754 | msg = { 'ReleaseProjectRequestBody' : msg} |
---|
755 | self.allocate_project.release_project(msg) |
---|
756 | return { 'allocID': req['allocID'] } |
---|
757 | else: |
---|
758 | raise service_error(service_error.req, "No such allocation") |
---|
759 | |
---|
760 | else: |
---|
761 | if self.allow_proxy: |
---|
762 | resp = self.proxy_ReleaseAccess.call_service(dt, req, |
---|
763 | self.cert_file, self.cert_pwd, |
---|
764 | self.trusted_certs) |
---|
765 | if resp.has_key('ReleaseAccessResponseBody'): |
---|
766 | return resp['ReleaseAccessResponseBody'] |
---|
767 | else: |
---|
768 | return None |
---|
769 | else: |
---|
770 | raise service_error(service_error.access, |
---|
771 | "Access proxying denied") |
---|
772 | |
---|
773 | |
---|