-
Notifications
You must be signed in to change notification settings - Fork 70
/
Copy pathsaml_avi_api.py
734 lines (700 loc) · 35.4 KB
/
saml_avi_api.py
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
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
# Copyright 2021 VMware, Inc.
# SPDX-License-Identifier: Apache License 2.0
from avi.sdk.avi_api import ApiSession, \
sessionDict, APIError
import requests
import re
import urllib
# import urlparse
import json
from datetime import datetime
from requests import ConnectionError
from requests.exceptions import ChunkedEncodingError
from ssl import SSLError
import time
import logging
import warnings
logger = logging.getLogger(__name__)
warnings.filterwarnings('ignore')
class WS1loginSAMLApiSession(ApiSession):
SAML_URL_SUFFIX = "/sso/login"
# Request RegX
saml_request_regex = r'<input type=\"hidden\" ' \
r'name=\"SAMLRequest\" value=\"(.*?)\"'
request_relay_state_regex = r'<input type=\"hidden\" ' \
r'name=\"RelayState\" value=\"(.*?)\"'
request_assertion_url_regex = r'<form action=\"(.*?)\" method=\"post\">'
# Response RegX
response_relay_state_regex = r'<input type=\"hidden\" ' \
r'name=\"RelayState\" value=\"(.*?)\"'
response_assertion_url_regex = r'<form id=\"the_form\" method=\"POST\" action=\"(.*?)\">'
def __init__(self, controller=None, username=None, password=None,
token=None, tenant=None, tenant_uuid=None, verify=False,
port=None, timeout=60, api_version=None,
retry_conxn_errors=True, data_log=False,
avi_credentials=None, session_id=None, csrftoken=None,
lazy_authentication=False, max_api_retries=None,
idp_cookies=None, user_hdrs=None):
self.idp_cookies = idp_cookies
super(WS1loginSAMLApiSession, self).__init__(
controller, username, password, token,
tenant, tenant_uuid, verify,
port, timeout, api_version,
retry_conxn_errors, data_log,
avi_credentials, session_id, csrftoken,
lazy_authentication, max_api_retries, user_hdrs)
return
def saml_assertion(self, username, password):
"""
Perform SAML request from controller to IDPs.
Establish session with controller and IDP.
Assert SAML request into the reqeust.
Get the controller session and IDP session.
:param username: IDP Username
:param password: IDP Password
:return: controller session and IDP response
"""
# Getting controller session
controller_session = requests.Session()
controller_session.verify = False
saml_controller_url = self.prefix + self.SAML_URL_SUFFIX
logger.info("Getting SAML request from url: %s", saml_controller_url)
resp = controller_session.get(saml_controller_url,
allow_redirects=True)
if resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
# Getting IDP session
idp_session = requests.Session()
saml_request_match = re.search(WS1loginSAMLApiSession.saml_request_regex, resp.text,
re.M | re.S)
if not saml_request_match:
logger.error("SAML request not generated by controller.")
raise APIError("SAML request not generated by controller.")
saml_request = saml_request_match.group(1)
relay_state = re.search(WS1loginSAMLApiSession.request_relay_state_regex, resp.text, re.M | re.S).group(1)
assertion_url = re.search(WS1loginSAMLApiSession.request_assertion_url_regex, resp.text, re.M | re.S).group(1)
headers = {'Content-Type': 'application/x-www-form-urlencoded'}
saml_data = urllib.parse.urlencode({
'SAMLRequest': saml_request,
'RelayState': relay_state})
if self.idp_cookies:
logger.info("Controller url %s generated SAML request is being "
"sent to IDP with existing IDP cookies.",
saml_controller_url)
idp_resp = idp_session.post(assertion_url, headers=headers,
data=saml_data, allow_redirects=False,
cookies=self.idp_cookies)
else:
logger.info("Controller url %s generated SAML request is being "
"sent to IDP.", saml_controller_url)
idp_resp = idp_session.post(assertion_url, headers=headers,
data=saml_data, allow_redirects=False)
if idp_resp.status_code not in (200, 301, 302):
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
if "SAMLResponse" not in idp_resp.text:
# credentials payload for given IDP
parsed_uri = urllib.parse.urlparse(assertion_url)
auth_url = "{}://{}/SAAS/API/1.0/REST/auth/system/login".format(parsed_uri.scheme, parsed_uri.netloc)
auth = {'username': username, 'password': password, 'issueToken': 'true'}
idp_session.headers.update({'content-type': 'application/json'})
idp_session.headers.update({'accept': 'application/json'})
idp_session.verify = False
auth_resp = idp_session.post(auth_url, json=auth)
if auth_resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
auth_resp.status_code, auth_resp.text))
raise APIError('Status Code %s msg %s' % (
auth_resp.status_code, auth_resp.text), auth_resp)
json_response = json.loads(auth_resp.content)
idp_token = json_response['sessionToken']
basic_auth_header = "Bearer " + idp_token
idp_session.headers.update({"authorization": basic_auth_header})
idp_resp = idp_session.post(assertion_url, headers=headers,
data=saml_data, allow_redirects=True)
if idp_resp.status_code not in (200, 301, 302):
logger.error('Status Code %s msg %s' % (
idp_resp.status_code, idp_resp.text))
raise APIError('Status Code %s msg %s' % (
idp_resp.status_code, idp_resp.text), resp)
from bs4 import BeautifulSoup
saml_resp = BeautifulSoup(idp_resp.text, features="html.parser")
saml_response_match = saml_resp.find('textarea').string
if not saml_response_match:
logger.error("SAML request not generated by controller.")
raise APIError("SAML request not generated by controller.")
return controller_session, idp_resp
def authenticate_session(self):
"""
Performs SAML authentication with Avi controller and IDPs.
Stores session cookies and sets header parameters.
"""
username = self.avi_credentials.username
if self.avi_credentials.password:
password = self.avi_credentials.password
else:
raise APIError("No user password provided")
logger.debug('authenticating user %s prefix %s',
self.avi_credentials.username, self.prefix)
self.cookies.clear()
try:
# Assert SAML response
controller_session, resp = self.saml_assertion(username, password)
content = resp.text
from bs4 import BeautifulSoup
saml_resp = BeautifulSoup(resp.text, features="html.parser")
saml_response = saml_resp.find('textarea').string
relay_state = re.search(WS1loginSAMLApiSession.response_relay_state_regex, content, re.M |
re.S).group(1)
assertion_url = re.search(WS1loginSAMLApiSession.response_assertion_url_regex, content, re.M | re.S).group(1)
saml_data = urllib.parse.urlencode({
'SAMLResponse': saml_response,
'RelayState': relay_state
})
headers = {'Content-Type': 'application/x-www-form-urlencoded'}
rsp = controller_session.post(assertion_url,
headers=headers,
data=saml_data)
if rsp.status_code == 200:
self.num_session_retries = 0
self.remote_api_version = \
rsp.headers.get('AVI_API_VERSION', {})
if self.user_hdrs:
self.headers.update(self.user_hdrs)
if rsp.cookies and 'csrftoken' in rsp.cookies:
sessionDict[self.key] = {
'csrftoken': rsp.cookies['csrftoken'],
'session_id': rsp.cookies['sessionid'],
'last_used': datetime.utcnow(),
'api': self,
'connected': True
}
logger.debug("authentication success for user %s",
self.avi_credentials.username)
return
# Check for bad request and invalid credentials response code
elif rsp.status_code in [401, 403]:
logger.error('Status Code %s msg %s' % (
rsp.status_code, rsp.text))
err = APIError('Status Code %s msg %s' % (
rsp.status_code, rsp.text), rsp)
else:
logger.error("Error status code %s msg %s", rsp.status_code,
rsp.text)
err = APIError('Status Code %s msg %s' % (
rsp.status_code, rsp.text), rsp)
except (ConnectionError, SSLError, ChunkedEncodingError) as e:
if not self.retry_conxn_errors:
raise
logger.warning('Connection error retrying %s', e)
err = e
# comes here only if there was either exception or login was not
# successful
if self.retry_wait_time:
time.sleep(self.retry_wait_time)
self.num_session_retries += 1
if self.num_session_retries > self.max_session_retries:
self.num_session_retries = 0
logger.error("Giving up after %d retries connection failure %s" % (
self.max_session_retries, True))
raise err
self.authenticate_session()
return
class OneloginSAMLApiSession(ApiSession):
"""
Extends the ApiSession class to override authentication
method and provide helper utilities to work with Avi
Controller and IDPs like onelogin, okta, etc.
"""
SAML_URL_SUFFIX = "/sso/login"
# Request RegX
saml_request_regex = r'<input type=\"hidden\" ' \
r'name=\"SAMLRequest\" value=\"(.*?)\"'
request_relay_state_regex = r'<input type=\"hidden\" ' \
r'name=\"RelayState\" value=\"(.*?)\"'
request_assertion_url_regex = r'<form method=\"post\" action=\"(.*?)\">'
# Response RegX
saml_response_regex = r'<input type=\"hidden\" ' \
r'name=\"SAMLResponse\" value=\"(.*?)\"'
response_relay_state_regex = r'<input type=\"hidden\" ' \
r'name=\"RelayState\" value=\"(.*?)\"'
response_assertion_url_regex = r'<form method=\"post\" ' \
r'action=\"(.*?)\">'
def __init__(self, controller=None, username=None, password=None,
token=None, tenant=None, tenant_uuid=None, verify=False,
port=None, timeout=60, api_version=None,
retry_conxn_errors=True, data_log=False,
avi_credentials=None, session_id=None, csrftoken=None,
lazy_authentication=False, max_api_retries=None,
idp_cookies=None, user_hdrs=None):
"""
This extends ApiSession class and overrides authentication method
for SMAL authentication.
:param controller: Controller IP
:param username: IDP username
:param password: IDP password
:param token: Controller token
:param tenant: Overrides the tenant used during session creation
:param tenant_uuid: Overrides the tenant or tenant_uuid during session
creation
:param verify: Boolean flag for SSL verification of url
:param port: Controller SSO port
:param timeout: Timeout for API calls; Default value is 60 seconds
:param api_version: Overrides x-avi-header in request header during
session creation
:param retry_conxn_errors: Retry on connection errors
:param data_log: Data log
:param avi_credentials: avi_credential object
:param session_id: Session ID
:param csrftoken: CSRF Token
:param lazy_authentication: Lazy_authentication for controller.
:param max_api_retries: Maximum API retires
:param idp_cookies: IDP cookies if want to use existing IDP session
"""
self.idp_cookies = idp_cookies
super(OneloginSAMLApiSession, self).__init__(
controller, username, password, token,
tenant, tenant_uuid, verify,
port, timeout, api_version,
retry_conxn_errors, data_log,
avi_credentials, session_id, csrftoken,
lazy_authentication, max_api_retries, user_hdrs)
return
def saml_assertion(self, username, password):
"""
Perform SAML request from controller to IDPs.
Establish session with controller and IDP.
Assert SAML request into the reqeust.
Get the controller session and IDP session.
:param username: IDP Username
:param password: IDP Password
:return: controller session and IDP response
"""
# Getting controller session
controller_session = requests.Session()
controller_session.verify = False
saml_controller_url = self.prefix + self.SAML_URL_SUFFIX
logger.info("Getting SAML request from url: %s", saml_controller_url)
resp = controller_session.get(saml_controller_url,
allow_redirects=True)
if resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
# Getting IDP session
idp_session = requests.Session()
saml_request_match = re.search(OneloginSAMLApiSession.saml_request_regex, resp.text,
re.M | re.S)
if not saml_request_match:
logger.error("SAML request not generated by controller.")
raise APIError("SAML request not generated by controller.")
saml_request = saml_request_match.group(1)
relay_state = re.search(OneloginSAMLApiSession.request_relay_state_regex, resp.text,
re.M | re.S).group(1)
assertion_url = re.search(OneloginSAMLApiSession.request_assertion_url_regex, resp.text,
re.M | re.S).group(1)
headers = {'Content-Type': 'application/x-www-form-urlencoded'}
saml_data = urllib.urlencode({
'SAMLRequest': saml_request,
'RelayState': relay_state})
if self.idp_cookies:
logger.info("Controller url %s generated SAML request is being "
"sent to IDP with existing IDP cookies.",
saml_controller_url)
idp_resp = idp_session.post(assertion_url, headers=headers,
data=saml_data, allow_redirects=False,
cookies=self.idp_cookies)
else:
logger.info("Controller url %s generated SAML request is being "
"sent to IDP.", saml_controller_url)
idp_resp = idp_session.post(assertion_url, headers=headers,
data=saml_data,
allow_redirects=False)
if resp.status_code not in (200, 301, 302):
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
if "SAMLResponse" not in idp_resp.text:
redirect_url = idp_resp.headers['Location']
idp_resp = idp_session.get(redirect_url,
allow_redirects=False)
if resp.status_code not in (200, 301, 302):
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
query_string = idp_resp.headers['Location'].split('=')[1]
data = {"return": query_string}
json_data = json.dumps(data)
headers = {'content-type': 'application/json'}
parsed_uri = urlparse.urlparse(assertion_url)
# This needs to be modified for other IDPs.
auth_url = "{}://{}/access/auth".format(parsed_uri.scheme,
parsed_uri.netloc)
resp = idp_session.post(auth_url, headers=headers,
data=json_data)
if resp.status_code in [401, 403]:
logger.error('Status Code %s msg Invalid SAML credentials %s'
% (resp.status_code, resp.text))
raise APIError('Status Code %s msg Invalid SAML credentials %s'
% (resp.status_code, resp.text), resp)
elif resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
# credentials payload for given IDP
credentials_tuple = [('username', 'login',
username),
('password', 'password',
password)]
for state in credentials_tuple:
bearer = "Bearer " + resp.text.split('jwt":"')[1][:-3]
headers = {'content-type': 'application/json',
'authorization': bearer}
user_data = {'state': state[0],
'payload': {state[1]: state[2]}}
json_data = json.dumps(user_data)
resp = idp_session.put(auth_url, headers=headers,
data=json_data)
if resp.status_code in [401, 403]:
logger.error('Status Code %s msg Invalid SAML credentials %s'
% (resp.status_code, resp.text))
raise APIError('Status Code %s msg Invalid SAML credentials %s'
% (resp.status_code, resp.text), resp)
elif resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
data = json.loads(resp.text)
try:
token = data["request"]["params"]["saml_request_params_token"]
except KeyError:
raise APIError("Couldn't complete "
"authentication with IDP")
url = data["request"]["uri"]
params = {'saml_request_params_token': token}
resp = idp_session.get(url, params=params)
if resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
return controller_session, resp
def authenticate_session(self):
"""
Performs SAML authentication with Avi controller and IDPs.
Stores session cookies and sets header parameters.
"""
username = self.avi_credentials.username
if self.avi_credentials.password:
password = self.avi_credentials.password
else:
raise APIError("No user password provided")
logger.debug('authenticating user %s prefix %s',
self.avi_credentials.username, self.prefix)
self.cookies.clear()
try:
# Assert SAML response
controller_session, resp = self.saml_assertion(username, password)
content = resp.text
saml_response_match = re.search(OneloginSAMLApiSession.saml_response_regex, content,
re.M | re.S)
saml_response = saml_response_match.group(1)
relay_state = re.search(OneloginSAMLApiSession.response_relay_state_regex, content, re.M |
re.S).group(1)
assertion_url = re.search(OneloginSAMLApiSession.response_assertion_url_regex, content, re.M |
re.S).group(1)
saml_data = urllib.urlencode([
('SAMLResponse', saml_response),
('RelayState', relay_state)])
headers = {'Content-Type': 'application/x-www-form-urlencoded'}
rsp = controller_session.post(assertion_url,
headers=headers,
data=saml_data)
if rsp.status_code == 200:
self.num_session_retries = 0
self.remote_api_version = \
rsp.headers.get('AVI_API_VERSION', {})
self.headers.update(self.user_hdrs)
if rsp.cookies and 'csrftoken' in rsp.cookies:
sessionDict[self.key] = {
'csrftoken': rsp.cookies['csrftoken'],
'session_id': rsp.cookies['sessionid'],
'last_used': datetime.utcnow(),
'api': self,
'connected': True
}
logger.debug("authentication success for user %s",
self.avi_credentials.username)
return
# Check for bad request and invalid credentials response code
elif rsp.status_code in [401, 403]:
logger.error('Status Code %s msg %s' % (
rsp.status_code, rsp.text))
err = APIError('Status Code %s msg %s' % (
rsp.status_code, rsp.text), rsp)
else:
logger.error("Error status code %s msg %s", rsp.status_code,
rsp.text)
err = APIError('Status Code %s msg %s' % (
rsp.status_code, rsp.text), rsp)
except (ConnectionError, SSLError, ChunkedEncodingError) as e:
if not self.retry_conxn_errors:
raise
logger.warning('Connection error retrying %s', e)
err = e
# comes here only if there was either exception or login was not
# successful
if self.retry_wait_time:
time.sleep(self.retry_wait_time)
self.num_session_retries += 1
if self.num_session_retries > self.max_session_retries:
self.num_session_retries = 0
logger.error("Giving up after %d retries connection failure %s" % (
self.max_session_retries, True))
raise err
self.authenticate_session()
return
class OktaSAMLApiSession(ApiSession):
"""
Extends the ApiSession session class to provide helper
utilities to work with Avi Controller and IDP for SAML assertion and
authentication, api massaging, etc
"""
SAML_URL_SUFFIX = "/sso/login"
# Request RegX
saml_request_regex = r'<input type=\"hidden\" ' \
r'name=\"SAMLRequest\" value=\"(.*?)\"'
request_relay_state_regex = r'<input type=\"hidden\" ' \
r'name=\"RelayState\" value=\"(.*?)\"'
request_assertion_url_regex = r'<form method=\"post\" action=\"(.*?)\">'
# Response RegX
saml_response_regex = r'<input name=\"SAMLResponse\" ' \
r'type=\"hidden\" value=\"(.*?)\"'
response_relay_state_regex = r'<input name=\"RelayState\" ' \
r'type=\"hidden\" value=\"(.*?)\"'
response_assertion_url_regex = r'<form id=\"appForm\" ' \
r'action=\"(.*?)\" method=\"post\">'
def __init__(self, controller=None, username=None, password=None,
token=None, tenant=None, tenant_uuid=None, verify=False,
port=None, timeout=60, api_version=None,
retry_conxn_errors=True, data_log=False,
avi_credentials=None, session_id=None, csrftoken=None,
lazy_authentication=False, max_api_retries=None,
idp_cookies=None):
"""
This extends ApiSession class and overrides authentication method
for SMAL authentication.
:param controller: Controller IP
:param username: IDP username
:param password: IDP password
:param token: Controller token
:param tenant: Overrides the tenant used during session creation
:param tenant_uuid: Overrides the tenant or tenant_uuid during session
creation
:param verify: Boolean flag for SSL verification of url
:param port: Controller SSO port
:param timeout: Timeout for API calls; Default value is 60 seconds
:param api_version: Overrides x-avi-header in request header during
session creation
:param retry_conxn_errors: Retry on connection errors
:param data_log: Data log
:param avi_credentials: avi_credential object
:param session_id: Session ID
:param csrftoken: CSRF Token
:param lazy_authentication: Lazy_authentication for controller.
:param max_api_retries: Maximum API retires
:param idp_cookies: IDP cookies if want to use existing IDP session
"""
self.idp_cookies = idp_cookies
super(OktaSAMLApiSession, self).__init__(
controller, username, password, token,
tenant, tenant_uuid, verify,
port, timeout, api_version,
retry_conxn_errors, data_log,
avi_credentials, session_id, csrftoken,
lazy_authentication, max_api_retries)
return
def saml_assertion(self, username, password):
"""
Perform SAML request from controller to IDPs.
Establish session with controller and IDP.
Assert SAML request into the reqeust.
Get the controller session and IDP session.
:param username: IDP Username
:param password: IDP Password
:return: controller session and IDP response
"""
# Getting controller session
controller_session = requests.Session()
controller_session.verify = False
saml_controller_url = self.prefix + self.SAML_URL_SUFFIX
logger.info("Getting SAML request from url: %s", saml_controller_url)
resp = controller_session.get(saml_controller_url,
allow_redirects=True)
if resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
saml_request_match = re.search(OktaSAMLApiSession.saml_request_regex, resp.text,
re.M | re.S)
if not saml_request_match:
logger.error("SAML request not generated by controller.")
raise APIError("SAML request not generated by controller.")
saml_request = saml_request_match.group(1)
relay_state = re.search(OktaSAMLApiSession.request_relay_state_regex, resp.text,
re.M | re.S).group(1)
assertion_url = re.search(OktaSAMLApiSession.request_assertion_url_regex, resp.text,
re.M | re.S).group(1)
idp_session = requests.Session()
idp_session.verify = False
saml_data = urllib.parse.urlencode({
'SAMLRequest': saml_request,
'RelayState': relay_state})
parsed_uri = urllib.parse.urlparse(assertion_url)
base_url = "{}://{}".format(parsed_uri.scheme, parsed_uri.netloc)
if self.idp_cookies:
logger.info("Controller url %s generated SAML request is being "
"sent to IDP with existing IDP cookies.",
saml_controller_url)
resp = idp_session.get(assertion_url, allow_redirects=False,
cookies=self.idp_cookies)
else:
logger.info("Controller url %s generated SAML request is being "
"sent to IDP.", saml_controller_url)
resp = idp_session.get(assertion_url, allow_redirects=False)
if resp.status_code not in (200, 301, 302):
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
if "SAMLResponse" not in resp.text:
user_data = {"username": username,
"options": {"warnBeforePasswordExpired": True,
"multiOptionalFactorEnroll": True},
"password": password}
json_data = json.dumps(user_data)
headers = {'content-type': 'application/json'}
resp = idp_session.post(base_url + "/api/v1/authn",
headers=headers,
data=json_data)
if resp.status_code in [401, 403]:
logger.error('Status Code %s msg Invalid SAML credentials %s'
% (resp.status_code, resp.text))
raise APIError('Status Code %s msg Invalid SAML credentials %s'
% (resp.status_code, resp.text), resp)
elif resp.status_code != 200:
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
data = json.loads(resp.text)
try:
token = data["sessionToken"]
except KeyError:
raise APIError("Couldn't complete authentication with IDP")
new_url = base_url + "/login/sessionCookieRedirect"
redirect_url = "{}?{}".format(assertion_url, saml_data)
params = {'checkAccountSetupComplete': 'true',
'token': token,
'redirectUrl': redirect_url}
resp = idp_session.get(new_url, params=params,
allow_redirects=True)
if resp.status_code not in (200, 301, 302):
logger.error('Status Code %s msg %s' % (
resp.status_code, resp.text))
raise APIError('Status Code %s msg %s' % (
resp.status_code, resp.text), resp)
return controller_session, resp
def authenticate_session(self):
"""
Performs SAML authentication with Avi controller and IDPs.
Stores session cookies and sets header parameters.
"""
username = self.avi_credentials.username
if self.avi_credentials.password:
password = self.avi_credentials.password
else:
raise APIError("No user password provided")
logger.debug('authenticating user %s prefix %s',
self.avi_credentials.username, self.prefix)
self.cookies.clear()
try:
# Assert SAML response
controller_session, resp = self.saml_assertion(username, password)
content = resp.text
saml_response_match = re.search(OktaSAMLApiSession.saml_response_regex,
content, re.M | re.S)
saml_response = saml_response_match.group(1)
assertion_url = re.search(OktaSAMLApiSession.response_assertion_url_regex, content,
re.M | re.S |
re.IGNORECASE).group(1)
relay_state = re.search(OktaSAMLApiSession.response_relay_state_regex, content,
re.M | re.S).group(1)
from HTMLParser import HTMLParser
parser = HTMLParser()
assertion_url = parser.unescape(assertion_url)
saml_response = parser.unescape(saml_response)
saml_data = urllib.urlencode([
('SAMLResponse', saml_response),
('RelayState', relay_state)])
headers = {'Content-Type': 'application/x-www-form-urlencoded'}
rsp = controller_session.post(assertion_url,
headers=headers,
data=saml_data,
allow_redirects=True)
if rsp.status_code == 200:
self.num_session_retries = 0
self.remote_api_version = \
rsp.headers.get('AVI_API_VERSION', {})
self.headers.update(self.user_hdrs)
if rsp.cookies and 'csrftoken' in rsp.cookies:
sessionDict[self.key] = {
'csrftoken': rsp.cookies['csrftoken'],
'session_id': rsp.cookies['sessionid'],
'last_used': datetime.utcnow(),
'api': self,
'connected': True
}
logger.debug("authentication success for user %s",
self.avi_credentials.username)
return
# Check for bad request and invalid credentials response code
elif rsp.status_code in [401, 403]:
logger.error('Status Code %s msg %s' % (
rsp.status_code, rsp.text))
err = APIError('Status Code %s msg %s' % (
rsp.status_code, rsp.text), rsp)
raise err
else:
logger.error("Error status code %s msg %s", rsp.status_code,
rsp.text)
err = APIError('Status Code %s msg %s' % (
rsp.status_code, rsp.text), rsp)
except (ConnectionError, SSLError, ChunkedEncodingError) as e:
if not self.retry_conxn_errors:
raise
logger.warning('Connection error retrying %s', e)
err = e
# Comes here only if there was either exception or login was not
# successful
if self.retry_wait_time:
time.sleep(self.retry_wait_time)
self.num_session_retries += 1
if self.num_session_retries > self.max_session_retries:
self.num_session_retries = 0
logger.error("Giving up after %d retries connection failure %s" % (
self.max_session_retries, True))
raise err
self.authenticate_session()
return