/usr/lib/python2.7/dist-packages/tempest_lib/auth.py is in python-tempest-lib 0.14.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 | # Copyright 2014 Hewlett-Packard Development Company, L.P.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import abc
import copy
import datetime
import re
from oslo_log import log as logging
import six
from six.moves.urllib import parse as urlparse
from tempest_lib import exceptions
from tempest_lib.services.identity.v2 import token_client as json_v2id
from tempest_lib.services.identity.v3 import token_client as json_v3id
ISO8601_FLOAT_SECONDS = '%Y-%m-%dT%H:%M:%S.%fZ'
ISO8601_INT_SECONDS = '%Y-%m-%dT%H:%M:%SZ'
LOG = logging.getLogger(__name__)
@six.add_metaclass(abc.ABCMeta)
class AuthProvider(object):
"""Provide authentication"""
def __init__(self, credentials):
"""Auth provider __init__
:param credentials: credentials for authentication
"""
if self.check_credentials(credentials):
self.credentials = credentials
else:
if isinstance(credentials, Credentials):
password = credentials.get('password')
message = "Credentials are: " + str(credentials)
if password is None:
message += " Password is not defined."
else:
message += " Password is defined."
raise exceptions.InvalidCredentials(message)
else:
raise TypeError("credentials object is of type %s, which is"
" not a valid Credentials object type." %
credentials.__class__.__name__)
self.cache = None
self.alt_auth_data = None
self.alt_part = None
def __str__(self):
return "Creds :{creds}, cached auth data: {cache}".format(
creds=self.credentials, cache=self.cache)
@abc.abstractmethod
def _decorate_request(self, filters, method, url, headers=None, body=None,
auth_data=None):
"""Decorate request with authentication data"""
return
@abc.abstractmethod
def _get_auth(self):
return
@abc.abstractmethod
def _fill_credentials(self, auth_data_body):
return
def fill_credentials(self):
"""Fill credentials object with data from auth"""
auth_data = self.get_auth()
self._fill_credentials(auth_data[1])
return self.credentials
@classmethod
def check_credentials(cls, credentials):
"""Verify credentials are valid."""
return isinstance(credentials, Credentials) and credentials.is_valid()
@property
def auth_data(self):
return self.get_auth()
@auth_data.deleter
def auth_data(self):
self.clear_auth()
def get_auth(self):
"""Returns auth from cache if available, else auth first"""
if self.cache is None or self.is_expired(self.cache):
self.set_auth()
return self.cache
def set_auth(self):
"""Forces setting auth.
Forces setting auth, ignores cache if it exists.
Refills credentials
"""
self.cache = self._get_auth()
self._fill_credentials(self.cache[1])
def clear_auth(self):
"""Clear access cache
Can be called to clear the access cache so that next request
will fetch a new token and base_url.
"""
self.cache = None
self.credentials.reset()
@abc.abstractmethod
def is_expired(self, auth_data):
return
def auth_request(self, method, url, headers=None, body=None, filters=None):
"""Obtains auth data and decorates a request with that.
:param method: HTTP method of the request
:param url: relative URL of the request (path)
:param headers: HTTP headers of the request
:param body: HTTP body in case of POST / PUT
:param filters: select a base URL out of the catalog
:returns a Tuple (url, headers, body)
"""
orig_req = dict(url=url, headers=headers, body=body)
auth_url, auth_headers, auth_body = self._decorate_request(
filters, method, url, headers, body)
auth_req = dict(url=auth_url, headers=auth_headers, body=auth_body)
# Overwrite part if the request if it has been requested
if self.alt_part is not None:
if self.alt_auth_data is not None:
alt_url, alt_headers, alt_body = self._decorate_request(
filters, method, url, headers, body,
auth_data=self.alt_auth_data)
alt_auth_req = dict(url=alt_url, headers=alt_headers,
body=alt_body)
if auth_req[self.alt_part] == alt_auth_req[self.alt_part]:
raise exceptions.BadAltAuth(part=self.alt_part)
auth_req[self.alt_part] = alt_auth_req[self.alt_part]
else:
# If the requested part is not affected by auth, we are
# not altering auth as expected, raise an exception
if auth_req[self.alt_part] == orig_req[self.alt_part]:
raise exceptions.BadAltAuth(part=self.alt_part)
# If alt auth data is None, skip auth in the requested part
auth_req[self.alt_part] = orig_req[self.alt_part]
# Next auth request will be normal, unless otherwise requested
self.reset_alt_auth_data()
return auth_req['url'], auth_req['headers'], auth_req['body']
def reset_alt_auth_data(self):
"""Configure auth provider to provide valid authentication data"""
self.alt_part = None
self.alt_auth_data = None
def set_alt_auth_data(self, request_part, auth_data):
"""Alternate auth data on next request
Configure auth provider to provide alt authentication data
on a part of the *next* auth_request. If credentials are None,
set invalid data.
:param request_part: request part to contain invalid auth: url,
headers, body
:param auth_data: alternative auth_data from which to get the
invalid data to be injected
"""
self.alt_part = request_part
self.alt_auth_data = auth_data
@abc.abstractmethod
def base_url(self, filters, auth_data=None):
"""Extracts the base_url based on provided filters"""
return
class KeystoneAuthProvider(AuthProvider):
EXPIRY_DATE_FORMATS = (ISO8601_FLOAT_SECONDS, ISO8601_INT_SECONDS)
token_expiry_threshold = datetime.timedelta(seconds=60)
def __init__(self, credentials, auth_url,
disable_ssl_certificate_validation=None,
ca_certs=None, trace_requests=None):
super(KeystoneAuthProvider, self).__init__(credentials)
self.dsvm = disable_ssl_certificate_validation
self.ca_certs = ca_certs
self.trace_requests = trace_requests
self.auth_client = self._auth_client(auth_url)
def _decorate_request(self, filters, method, url, headers=None, body=None,
auth_data=None):
if auth_data is None:
auth_data = self.auth_data
token, _ = auth_data
base_url = self.base_url(filters=filters, auth_data=auth_data)
# build authenticated request
# returns new request, it does not touch the original values
_headers = copy.deepcopy(headers) if headers is not None else {}
_headers['X-Auth-Token'] = str(token)
if url is None or url == "":
_url = base_url
else:
# Join base URL and url, and remove multiple contiguous slashes
_url = "/".join([base_url, url])
parts = [x for x in urlparse.urlparse(_url)]
parts[2] = re.sub("/{2,}", "/", parts[2])
_url = urlparse.urlunparse(parts)
# no change to method or body
return str(_url), _headers, body
@abc.abstractmethod
def _auth_client(self):
return
@abc.abstractmethod
def _auth_params(self):
return
def _get_auth(self):
# Bypasses the cache
auth_func = getattr(self.auth_client, 'get_token')
auth_params = self._auth_params()
# returns token, auth_data
token, auth_data = auth_func(**auth_params)
return token, auth_data
def _parse_expiry_time(self, expiry_string):
expiry = None
for date_format in self.EXPIRY_DATE_FORMATS:
try:
expiry = datetime.datetime.strptime(
expiry_string, date_format)
except ValueError:
pass
if expiry is None:
raise ValueError(
"time data '{data}' does not match any of the"
"expected formats: {formats}".format(
data=expiry_string, formats=self.EXPIRY_DATE_FORMATS))
return expiry
def get_token(self):
return self.auth_data[0]
class KeystoneV2AuthProvider(KeystoneAuthProvider):
def _auth_client(self, auth_url):
return json_v2id.TokenClient(
auth_url, disable_ssl_certificate_validation=self.dsvm,
ca_certs=self.ca_certs, trace_requests=self.trace_requests)
def _auth_params(self):
return dict(
user=self.credentials.username,
password=self.credentials.password,
tenant=self.credentials.tenant_name,
auth_data=True)
def _fill_credentials(self, auth_data_body):
tenant = auth_data_body['token']['tenant']
user = auth_data_body['user']
if self.credentials.tenant_name is None:
self.credentials.tenant_name = tenant['name']
if self.credentials.tenant_id is None:
self.credentials.tenant_id = tenant['id']
if self.credentials.username is None:
self.credentials.username = user['name']
if self.credentials.user_id is None:
self.credentials.user_id = user['id']
def base_url(self, filters, auth_data=None):
"""Base URL from catalog
Filters can be:
- service: compute, image, etc
- region: the service region
- endpoint_type: adminURL, publicURL, internalURL
- api_version: replace catalog version with this
- skip_path: take just the base URL
"""
if auth_data is None:
auth_data = self.auth_data
token, _auth_data = auth_data
service = filters.get('service')
region = filters.get('region')
endpoint_type = filters.get('endpoint_type', 'publicURL')
if service is None:
raise exceptions.EndpointNotFound("No service provided")
_base_url = None
for ep in _auth_data['serviceCatalog']:
if ep["type"] == service:
for _ep in ep['endpoints']:
if region is not None and _ep['region'] == region:
_base_url = _ep.get(endpoint_type)
if not _base_url:
# No region matching, use the first
_base_url = ep['endpoints'][0].get(endpoint_type)
break
if _base_url is None:
raise exceptions.EndpointNotFound(service)
parts = urlparse.urlparse(_base_url)
if filters.get('api_version', None) is not None:
path = "/" + filters['api_version']
noversion_path = "/".join(parts.path.split("/")[2:])
if noversion_path != "":
path += "/" + noversion_path
_base_url = _base_url.replace(parts.path, path)
if filters.get('skip_path', None) is not None and parts.path != '':
_base_url = _base_url.replace(parts.path, "/")
return _base_url
def is_expired(self, auth_data):
_, access = auth_data
expiry = self._parse_expiry_time(access['token']['expires'])
return (expiry - self.token_expiry_threshold <=
datetime.datetime.utcnow())
class KeystoneV3AuthProvider(KeystoneAuthProvider):
def _auth_client(self, auth_url):
return json_v3id.V3TokenClient(
auth_url, disable_ssl_certificate_validation=self.dsvm,
ca_certs=self.ca_certs, trace_requests=self.trace_requests)
def _auth_params(self):
return dict(
user_id=self.credentials.user_id,
username=self.credentials.username,
password=self.credentials.password,
project_id=self.credentials.project_id,
project_name=self.credentials.project_name,
user_domain_id=self.credentials.user_domain_id,
user_domain_name=self.credentials.user_domain_name,
project_domain_id=self.credentials.project_domain_id,
project_domain_name=self.credentials.project_domain_name,
domain_id=self.credentials.domain_id,
domain_name=self.credentials.domain_name,
auth_data=True)
def _fill_credentials(self, auth_data_body):
# project or domain, depending on the scope
project = auth_data_body.get('project', None)
domain = auth_data_body.get('domain', None)
# user is always there
user = auth_data_body['user']
# Set project fields
if project is not None:
if self.credentials.project_name is None:
self.credentials.project_name = project['name']
if self.credentials.project_id is None:
self.credentials.project_id = project['id']
if self.credentials.project_domain_id is None:
self.credentials.project_domain_id = project['domain']['id']
if self.credentials.project_domain_name is None:
self.credentials.project_domain_name = (
project['domain']['name'])
# Set domain fields
if domain is not None:
if self.credentials.domain_id is None:
self.credentials.domain_id = domain['id']
if self.credentials.domain_name is None:
self.credentials.domain_name = domain['name']
# Set user fields
if self.credentials.username is None:
self.credentials.username = user['name']
if self.credentials.user_id is None:
self.credentials.user_id = user['id']
if self.credentials.user_domain_id is None:
self.credentials.user_domain_id = user['domain']['id']
if self.credentials.user_domain_name is None:
self.credentials.user_domain_name = user['domain']['name']
def base_url(self, filters, auth_data=None):
"""Base URL from catalog
Filters can be:
- service: compute, image, etc
- region: the service region
- endpoint_type: adminURL, publicURL, internalURL
- api_version: replace catalog version with this
- skip_path: take just the base URL
"""
if auth_data is None:
auth_data = self.auth_data
token, _auth_data = auth_data
service = filters.get('service')
region = filters.get('region')
endpoint_type = filters.get('endpoint_type', 'public')
if service is None:
raise exceptions.EndpointNotFound("No service provided")
if 'URL' in endpoint_type:
endpoint_type = endpoint_type.replace('URL', '')
_base_url = None
catalog = _auth_data['catalog']
# Select entries with matching service type
service_catalog = [ep for ep in catalog if ep['type'] == service]
if len(service_catalog) > 0:
service_catalog = service_catalog[0]['endpoints']
else:
# No matching service
raise exceptions.EndpointNotFound(service)
# Filter by endpoint type (interface)
filtered_catalog = [ep for ep in service_catalog if
ep['interface'] == endpoint_type]
if len(filtered_catalog) == 0:
# No matching type, keep all and try matching by region at least
filtered_catalog = service_catalog
# Filter by region
filtered_catalog = [ep for ep in filtered_catalog if
ep['region'] == region]
if len(filtered_catalog) == 0:
# No matching region, take the first endpoint
filtered_catalog = [service_catalog[0]]
# There should be only one match. If not take the first.
_base_url = filtered_catalog[0].get('url', None)
if _base_url is None:
raise exceptions.EndpointNotFound(service)
parts = urlparse.urlparse(_base_url)
if filters.get('api_version', None) is not None:
path = "/" + filters['api_version']
noversion_path = "/".join(parts.path.split("/")[2:])
if noversion_path != "":
path += "/" + noversion_path
_base_url = _base_url.replace(parts.path, path)
if filters.get('skip_path', None) is not None:
_base_url = _base_url.replace(parts.path, "/")
return _base_url
def is_expired(self, auth_data):
_, access = auth_data
expiry = self._parse_expiry_time(access['expires_at'])
return (expiry - self.token_expiry_threshold <=
datetime.datetime.utcnow())
def is_identity_version_supported(identity_version):
return identity_version in IDENTITY_VERSION
def get_credentials(auth_url, fill_in=True, identity_version='v2',
disable_ssl_certificate_validation=None, ca_certs=None,
trace_requests=None, **kwargs):
"""Builds a credentials object based on the configured auth_version
:param auth_url (string): Full URI of the OpenStack Identity API(Keystone)
which is used to fetch the token from Identity service.
:param fill_in (boolean): obtain a token and fill in all credential
details provided by the identity service. When fill_in is not
specified, credentials are not validated. Validation can be invoked
by invoking ``is_valid()``
:param identity_version (string): identity API version is used to
select the matching auth provider and credentials class
:param disable_ssl_certificate_validation: whether to enforce SSL
certificate validation in SSL API requests to the auth system
:param ca_certs: CA certificate bundle for validation of certificates
in SSL API requests to the auth system
:param trace_requests: trace in log API requests to the auth system
:param kwargs (dict): Dict of credential key/value pairs
Examples:
Returns credentials from the provided parameters:
>>> get_credentials(username='foo', password='bar')
Returns credentials including IDs:
>>> get_credentials(username='foo', password='bar', fill_in=True)
"""
if not is_identity_version_supported(identity_version):
raise exceptions.InvalidIdentityVersion(
identity_version=identity_version)
credential_class, auth_provider_class = IDENTITY_VERSION.get(
identity_version)
creds = credential_class(**kwargs)
# Fill in the credentials fields that were not specified
if fill_in:
dsvm = disable_ssl_certificate_validation
auth_provider = auth_provider_class(
creds, auth_url, disable_ssl_certificate_validation=dsvm,
ca_certs=ca_certs, trace_requests=trace_requests)
creds = auth_provider.fill_credentials()
return creds
class Credentials(object):
"""Set of credentials for accessing OpenStack services
ATTRIBUTES: list of valid class attributes representing credentials.
"""
ATTRIBUTES = []
def __init__(self, **kwargs):
"""Enforce the available attributes at init time (only).
Additional attributes can still be set afterwards if tests need
to do so.
"""
self._initial = kwargs
self._apply_credentials(kwargs)
def _apply_credentials(self, attr):
for key in attr.keys():
if key in self.ATTRIBUTES:
setattr(self, key, attr[key])
else:
msg = '%s is not a valid attr for %s' % (key, self.__class__)
raise exceptions.InvalidCredentials(msg)
def __str__(self):
"""Represent only attributes included in self.ATTRIBUTES"""
attrs = [attr for attr in self.ATTRIBUTES if attr is not 'password']
_repr = dict((k, getattr(self, k)) for k in attrs)
return str(_repr)
def __eq__(self, other):
"""Credentials are equal if attributes in self.ATTRIBUTES are equal"""
return str(self) == str(other)
def __getattr__(self, key):
# If an attribute is set, __getattr__ is not invoked
# If an attribute is not set, and it is a known one, return None
if key in self.ATTRIBUTES:
return None
else:
raise AttributeError
def __delitem__(self, key):
# For backwards compatibility, support dict behaviour
if key in self.ATTRIBUTES:
delattr(self, key)
else:
raise AttributeError
def get(self, item, default=None):
# In this patch act as dict for backward compatibility
try:
return getattr(self, item)
except AttributeError:
return default
def get_init_attributes(self):
return self._initial.keys()
def is_valid(self):
raise NotImplementedError
def reset(self):
# First delete all known attributes
for key in self.ATTRIBUTES:
if getattr(self, key) is not None:
delattr(self, key)
# Then re-apply initial setup
self._apply_credentials(self._initial)
class KeystoneV2Credentials(Credentials):
ATTRIBUTES = ['username', 'password', 'tenant_name', 'user_id',
'tenant_id']
def is_valid(self):
"""Check of credentials (no API call)
Minimum set of valid credentials, are username and password.
Tenant is optional.
"""
return None not in (self.username, self.password)
class KeystoneV3Credentials(Credentials):
"""Credentials suitable for the Keystone Identity V3 API"""
ATTRIBUTES = ['domain_id', 'domain_name', 'password', 'username',
'project_domain_id', 'project_domain_name', 'project_id',
'project_name', 'tenant_id', 'tenant_name', 'user_domain_id',
'user_domain_name', 'user_id']
def __setattr__(self, key, value):
parent = super(KeystoneV3Credentials, self)
# for tenant_* set both project and tenant
if key == 'tenant_id':
parent.__setattr__('project_id', value)
elif key == 'tenant_name':
parent.__setattr__('project_name', value)
# for project_* set both project and tenant
if key == 'project_id':
parent.__setattr__('tenant_id', value)
elif key == 'project_name':
parent.__setattr__('tenant_name', value)
# for *_domain_* set both user and project if not set yet
if key == 'user_domain_id':
if self.project_domain_id is None:
parent.__setattr__('project_domain_id', value)
if key == 'project_domain_id':
if self.user_domain_id is None:
parent.__setattr__('user_domain_id', value)
if key == 'user_domain_name':
if self.project_domain_name is None:
parent.__setattr__('project_domain_name', value)
if key == 'project_domain_name':
if self.user_domain_name is None:
parent.__setattr__('user_domain_name', value)
# support domain_name coming from config
if key == 'domain_name':
parent.__setattr__('user_domain_name', value)
parent.__setattr__('project_domain_name', value)
# finally trigger default behaviour for all attributes
parent.__setattr__(key, value)
def is_valid(self):
"""Check of credentials (no API call)
Valid combinations of v3 credentials (excluding token, scope)
- User id, password (optional domain)
- User name, password and its domain id/name
For the scope, valid combinations are:
- None
- Project id (optional domain)
- Project name and its domain id/name
- Domain id
- Domain name
"""
valid_user_domain = any(
[self.user_domain_id is not None,
self.user_domain_name is not None])
valid_project_domain = any(
[self.project_domain_id is not None,
self.project_domain_name is not None])
valid_user = any(
[self.user_id is not None,
self.username is not None and valid_user_domain])
valid_project_scope = any(
[self.project_name is None and self.project_id is None,
self.project_id is not None,
self.project_name is not None and valid_project_domain])
valid_domain_scope = any(
[self.domain_id is None and self.domain_name is None,
self.domain_id or self.domain_name])
return all([self.password is not None,
valid_user,
valid_project_scope and valid_domain_scope])
IDENTITY_VERSION = {'v2': (KeystoneV2Credentials, KeystoneV2AuthProvider),
'v3': (KeystoneV3Credentials, KeystoneV3AuthProvider)}
|