Crashing on missing <input> value

I saw this while trying to auth today:

ERROR:root:'NoneType' object has no attribute 'get'
Traceback (most recent call last):
  File "/build/aws_google_auth/__init__.py", line 79, in cli
    process_auth(args, config)
  File "/build/aws_google_auth/__init__.py", line 243, in process_auth
    google_client.do_login()
  File "/build/aws_google_auth/google.py", line 325, in do_login
    sess = self.handle_prompt(sess)
  File "/build/aws_google_auth/google.py", line 621, in handle_prompt
    response_page.find('input', {
AttributeError: 'NoneType' object has no attribute 'get'

The code in question:

https://github.com/cevoaustralia/aws-google-auth/blob/3f3b73bea5b3c0a8161942b2ffc8423dbda93a4a/aws_google_auth/google.py#L619-L628

Running with --save-flow, I looked in aws-google-auth-2021-01-29T001110/ac.go.com~o~saml2~initsso_2.html and found that I was missing an for checkedDomains and pstMsg:

  <input type="hidden" name="" value="">
  <input type="hidden" name="gxf" value="...">
  <input type="hidden" name="continue" value="...">
  <input type="hidden" name="followup" value="...">
  <input type="hidden" name="ltmpl" value="popup">
  <input type="hidden" name="scc" value="1">
  <input type="hidden" name="sarp" value="1">
  <input type="hidden" name="oauth" value="1">
  <input type="hidden" name="faa" value="1">
  <input id="profile-information" name="ProfileInformation" type="hidden" value="">
  <input id="session-state" name="SessionState" type="hidden" value="...">
  <input name="flowName" type="hidden" value="...">
  <input type="hidden" id="_utf8" name="_utf8" value="&#9731;"/>
  <input type="hidden" name="bgresponse" id="bgresponse" value="js_disabled">

I got past this locally by skipping over those fields:

diff --git a/aws_google_auth/google.py b/aws_google_auth/google.py
index 398eff5..6b35966 100644
--- a/aws_google_auth/google.py
+++ b/aws_google_auth/google.py
@@ -561,6 +561,7 @@ class Google:
         return self.post(challenge_url, data=payload)
 
     def handle_prompt(self, sess):
         response_page = BeautifulSoup(sess.text, 'html.parser')
         challenge_url = sess.url.split("?")[0]
 
@@ -616,16 +617,8 @@ class Google:
             response_page.find('input', {
                 'name': 'sarp'
             }).get('value'),
-            'checkedDomains':
-            response_page.find('input', {
-                'name': 'checkedDomains'
-            }).get('value'),
             'checkConnection':
             'youtube:1295:1',
-            'pstMsg':
-            response_page.find('input', {
-                'name': 'pstMsg'
-            }).get('value'),
             'TL':
             response_page.find('input', {
                 'name': 'TL'
@@ -642,6 +635,14 @@ class Google:
             }).get('value'),
             'TrustDevice':
             'on',
         }
 
         return self.post(challenge_url, data=payload)

Which got me credentials, and they work, but I don’t know what I’m doing when I skip adding those fields to the request, nor can I speak to why they’re not in the payload Google handed back to me today.

[vkatsikaros]

I have also run into the same problem with the most recent 0.0.37 version.

$ aws-google-auth --version
aws-google-auth 0.0.37

$ aws-google-auth   -p google   -u [e-mail]   -I IIIIIIIIIIIIIIIIII   -S SSSSSSSSSS   -R eu-west-1   -d 36000   --save-failure-html -l debug
INFO:root:aws_google_auth: SAML cache not found
Google Password: 
DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): accounts.google.com:443
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "GET /o/saml2/initsso?idpid=IIIIIIIIIIIIIIIIII&spid=SSSSSSSSSS&forceauthn=false HTTP/1.1" 302 0
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "GET /ServiceLogin?passive=1209600&continue=https://accounts.google.com/o/saml2/initsso?idpid%3DIIIIIIIIIIIIIIIIII%26spid%3DSSSSSSSSSS%26forceauthn%3Dfalse%26from_login%3D1%26as%3DAAAAAAAAAAAAAAAAAAAA&followup=https://accounts.google.com/o/saml2/initsso?idpid%3DIIIIIIIIIIIIIIIIII%26spid%3DSSSSSSSSSS%26forceauthn%3Dfalse%26from_login%3D1%26as%3DAAAAAAAAAAAAAAAAAAAA&ltmpl=popup&oauth=1&faa=1&sarp=1&scc=1 HTTP/1.1" 200 None
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "POST /signin/v1/lookup HTTP/1.1" 302 565
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "GET /signin/challenge/pwd/1?continue=https%3A%2F%2Faccounts.google.com%2Fo%2Fsaml2%2Finitsso%3Fidpid%3DIIIIIIIIIIIIIIIIII%26spid%3DSSSSSSSSSS%26forceauthn%3Dfalse%26from_login%3D1%26as%3DAAAAAAAAAAAAAAAAAAAA&sarp=1&scc=1&flowName=GlifWebSignIn&faa=1&oauth=1&ltmpl=popup&TL=TTTTTTTTTTTTTTTTTTTTTTTTTTTT HTTP/1.1" 200 None
INFO:root:Handling new-style login page
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "POST /signin/challenge/pwd/1 HTTP/1.1" 302 564
DEBUG:urllib3.connectionpool:https://accounts.google.com:443 "GET /signin/challenge/az/2?continue=https%3A%2F%2Faccounts.google.com%2Fo%2Fsaml2%2Finitsso%3Fidpid%3DIIIIIIIIIIIIIIIIII%26spid%3DSSSSSSSSSS%26forceauthn%3Dfalse%26from_login%3D1%26as%3DAAAAAAAAAAAAAAAAAAAA&sarp=1&scc=1&flowName=GlifWebSignIn&faa=1&oauth=1&ltmpl=popup&TL=TTTTTTTTTTTTTTTTTTTTTTTTTTTT HTTP/1.1" 200 None
numerical code for prompt: 28
Open the Google App, and tap 'Yes' on the prompt to sign in ...
DEBUG:urllib3.connectionpool:Starting new HTTPS connection (1): content.googleapis.com:443
DEBUG:urllib3.connectionpool:https://content.googleapis.com:443 "POST /cryptauth/v1/authzen/awaittx?alt=json&key=kkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk HTTP/1.1" 200 None
ERROR:root:'NoneType' object has no attribute 'get'
Traceback (most recent call last):
  File "/home/ubuntu/.venv/aws-google-auth/lib/python3.8/site-packages/aws_google_auth/__init__.py", line 79, in cli
    process_auth(args, config)
  File "/home/ubuntu/.venv/aws-google-auth/lib/python3.8/site-packages/aws_google_auth/__init__.py", line 243, in process_auth
    google_client.do_login()
  File "/home/ubuntu/.venv/aws-google-auth/lib/python3.8/site-packages/aws_google_auth/google.py", line 325, in do_login
    sess = self.handle_prompt(sess)
  File "/home/ubuntu/.venv/aws-google-auth/lib/python3.8/site-packages/aws_google_auth/google.py", line 620, in handle_prompt
    response_page.find('input', {
AttributeError: 'NoneType' object has no attribute 'get'

[fernandolsantos]

Confirming @LucasSymons’s post, I was having the same problem. Downgraded to version 0.0.36 and it worked.