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Updates to Google ID token service-to-service auth sample #674

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Merged
merged 3 commits into from
Nov 21, 2016
Merged

Updates to Google ID token service-to-service auth sample #674

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011a04e
Use "https://server_name" as the TARGET_AUD for Google ID token request.
liminw Nov 17, 2016
44a1e8e
Change "scope" to "target_audience".
liminw Nov 18, 2016
138b318
Fix small lint issue
Nov 21, 2016
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6 changes: 2 additions & 4 deletions appengine/flexible/endpoints/README.md
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Expand Up @@ -160,10 +160,8 @@ The client project is running Google App Engine standard application.

To use the client for authentication:

1. Update the `google_id_token`'s audiences, replace `YOUR-SERVER-PROJECT-ID` with your server project ID.
2. Redeploy your server application.
3. Update clients/service_to_service_google_id_token/main.py, replace 'YOUR-CLIENT-PROJECT-ID' and 'YOUR-SERVER-PROJECT-ID' with your client project ID and your server project ID.
4. Upload your application to Google App Engine by invoking the following command. Note that you need to provide project ID in the command because there are two projects (server and client projects) here and gcloud needs to know which project to pick.
1. Update clients/service_to_service_google_id_token/main.py, replace 'YOUR-CLIENT-PROJECT-ID' and 'YOUR-SERVER-PROJECT-ID' with your client project ID and your server project ID.
2. Upload your application to Google App Engine by invoking the following command. Note that you need to provide project ID in the command because there are two projects (server and client projects) here and gcloud needs to know which project to pick.
```bash
$ gcloud app deploy app.yaml --project=YOUR-CLIENT-PROJECT-ID
```
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13 changes: 6 additions & 7 deletions appengine/flexible/endpoints/clients/service_to_service_google_id_token/main.py
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Expand Up @@ -24,9 +24,9 @@
from google.appengine.api import app_identity
import webapp2

DEFAUTL_SERVICE_ACCOUNT = "YOUR-CLIENT-PROJECT-ID@appspot.gserviceaccount.com"
SERVICE_ACCOUNT_EMAIL = "YOUR-CLIENT-PROJECT-ID@appspot.gserviceaccount.com"
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I think you can grab this from app_identity: app_identity. get_service_account_name()

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Hi Jon, thanks for the review. I prefer to use a constant SERVICE_ACCOUNT_EMAIL here. This way, the code snippet for filling out payload would look the same for both default service account and non-default service account.

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Sounds good.

HOST = "YOUR-SERVER-PROJECT-ID.appspot.com"
TARGET_AUD = "YOUR-SERVER-PROJECT-ID@appspot.gserviceaccount.com"
TARGET_AUD = "https://YOUR-SERVER-PROJECT-ID.appspot.com"


def generate_jwt():
Expand All @@ -42,11 +42,10 @@ def generate_jwt():
"iat": now,
# expires after one hour.
"exp": now + 3600,
# iss is the Google App Engine default service account email.
"iss": DEFAUTL_SERVICE_ACCOUNT,
# scope must match 'audience' for google_id_token in the security
# configuration in your swagger spec.
"scope": TARGET_AUD,
# iss is the service account email.
"iss": SERVICE_ACCOUNT_EMAIL,
# target_audience is the URL of the target service.
"target_audience": TARGET_AUD,
# aud must be Google token endpoints URL.
"aud": "https://www.googleapis.com/oauth2/v4/token"
})
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1 change: 0 additions & 1 deletion appengine/flexible/endpoints/swagger.yaml
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Expand Up @@ -76,7 +76,6 @@ paths:
# Your OAuth2 client's Client ID must be added here. You can add
# multiple client IDs to accept tokens from multiple clients.
- "YOUR-CLIENT-ID"
- "YOUR-SERVER-PROJECT-ID@appspot.gserviceaccount.com"
"/auth/info/firebase":
get:
description: "Returns the requests' authentication information."
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