I have a Rails website that has Google OAUTH2 implemented and working.
We are developing an iOS app, which is going to talk to my web server using APIs. Some of the APIs need the user to be authenticated. The idea, is that the iOS app authenticates the user using OAUTH2 on the device, then POSTs the token over SSL from the device to the web as the authentication. I need the website to verify the token.
In the Google API console, I added the client ID for the iPhone device, and got an access token by going to:
https://accounts.google.com/o/oauth2/auth?
scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fuserinfo.email&
redirect_uri=urn:ietf:wg:oauth:2.0:oob&
response_type=code&
client_id={my client id}
Then, I pass the token to my site. On my site, I validate the token via:
google = OmniAuth::Strategies::GoogleOauth2.new(ENV['GOOGLE_API_KEY'],['GOOGLE_CLIENT_API_SECRET'])
client = OAuth2::Client.new(ENV['GOOGLE_API_KEY'],['GOOGLE_CLIENT_API_SECRET'], google.options.client_options)
access_token = OAuth2::AccessToken.new(client, params[:token], google.options.access_token_options || {})
google.access_token = access_token
google.auth_hash
When I attempt to auth_hash, the following error is returned:
{
"error": {
"errors": [
{
"domain": "global",
"reason": "authError",
"message": "Invalid Credentials",
"locationType": "header",
"location": "Authorization"
}
],
"code": 401,
"message": "Invalid Credentials"
}
}
From here, I have no clue why I have specified invalid credentials.
ENV['GOOGLE_API_KEY'] points to the same API key as the website, and ENV['GOOGLE_CLIENT_API_SECRET'] points to the secret for the iOS client.
The URL I used above, I thought, gave me an access token. In reality, it returns to me an authorization code (which can then be used to get an access token).
The solution, is to exchange the authorization code, for an access token, then I can pass the token around and use it.
The difference between an authorization code and an access token is somewhat vague on the Google site, but you can read about how to exchange them here:
https://developers.google.com/accounts/docs/OAuth2WebServer
Related
I am trying to issue a POST request towards the google calendar api, but I fail to understand how to authenticate it.
I took the following steps to try and use a service account to do so:
I've enabled the the calendar api in the Google Cloud console
I've created a new service account, enabled G Suite Domain-wide Delegation, and downloaded the provided key.
I've added the service account email to the calendar to be able to make changes and create events.
I've tried to create a POST request to https://www.googleapis.com/calendar/v3/calendars/calendarId/events with the contents of the JSON key as the value of the Authorization header, but I receive the following error:
{
"error": {
"errors": [
{
"domain": "global",
"reason": "authError",
"message": "Invalid Credentials",
"locationType": "header",
"location": "Authorization"
}
],
"code": 401,
"message": "Invalid Credentials"
}
}
Am I missing some steps or have I do not understand correctly the authentication process?
I would appreciate your help.
Its not simply a matter of applying the contents of the key file to your call, all google apis need an access token in order to authenticate them.
To get an access token from a service account you need to follow the following steps. Preparing to make an authorized API call
There are steps you will need to complete inorder to get the access token you will need to make a call to the api
After you obtain the client ID and private key from the API Console, your application needs to complete the following steps:
Create a JSON Web Token (JWT, pronounced, "jot") which includes a header, a claim set, and a signature.
Request an access token from the Google OAuth 2.0 Authorization Server.
Handle the JSON response that the Authorization Server returns.
I recommend you pick your favorite server sided programming language and find a client library for it. It will make things much easier then you trying to authncate using a service account by yourself.
i'm trying to integrate the Fitbit SDK in my iOS app. I have created project on fitbit now i'm running there API in Postman to check profile, but in response it is showing me invalid access token,
{
"errors": [
{
"errorType": "invalid_token",
"message": "Access token invalid: 39ec7defa6f0e33b314bbf6217279b15. Visit https://dev.fitbit.com/docs/oauth2 for more information on the Fitbit Web API authorization process."
}
],
"success": false
}
This is my API https://api.fitbit.com/1/user/-/profile.json and this is what i'm passing in header, Authorization : Bearer Client Secret But it is showing me status code 401 having error of invalid access token . How can i get the access token for my app?
You need to get an OAuth2.0 token from the FitBit authentication service before you can call any other endpoints on the API. You will need to redirect your app to Safari and go to the fitbit authentication service so that the user can log in and authorise your apps access to their FitBit data. The callback will then return an OAuth token that you can pass in subsequent requests.
You will need to call something like this:
https://www.fitbit.com/oauth2/authorize?response_type=code&client_id=%#&scope=%#&redirect_uri=%#"
This is the official fitbit documentation for Authorisation:
https://dev.fitbit.com/build/reference/web-api/oauth2/
Context
We are successfully using https://accounts.google.com/o/oauth2/auth to acquire an authentication_code with the following app permissions.
Know who you are on Google
View your email address
View your basic profile info
We are also successfully using https://accounts.google.com/o/oauth2/token to exchange that authentication code for an access_token and id_token.
Problem
With that access_token, we are using https://www.googleapis.com/plus/v1/people/me/openIdConnect to acquire profile information. This is a GET request with the following header.
Authorization: Bearer access_token
The response from Google is invariably this error:
"error": {
"errors": [
{
"domain": "global",
"reason": "authError",
"message": "Invalid Credentials",
"locationType": "header",
"location": "Authorization"
}
],
"code": 401,
"message": "Invalid Credentials"
}
This Google documentation makes two suggestions:
Refresh the access token using the long-lived refresh token.
If this fails, direct the user through the OAuth flow, as described in Authorizing Your App with Google Drive.
We have tried both of those approaches and receive the same error.
We were accidentally using the id_token in the Authorization header. We needed to make sure to use the access_token instead.
I am getting 401 Invalid Credentials error trying to use the Youtube API in the OAuth 2.0 Playground.
Response is:
{
"error": {
"code": 401,
"message": "Invalid Credentials",
"errors": [
{
"locationType": "header",
"domain": "global",
"message": "Invalid Credentials",
"reason": "authError",
"location": "Authorization"
}
]
}
}
Steps can be reproduced here.
Select Manage Youtube account API
Authorize
Get access token
Attempt to call any Youtube API (you may need to plug your own API key in as well)
The access token is valid (non-Youtube API calls work fine) and I have tried this with a number of different accounts which have Youtube accounts and channels set up (so the reply here is not what's happening).
The API works fine in the Try it Now section here so this is quite strange.
Maybe somebody can try these steps with their account and verify if the outcome is the same or not?
You have to choose the "Use your own OAuth credentials" option in the settings of the OAuth Playground (link at the top right corner).
You also need to add the following URL to the list of Redirect URIs of you project in the Developers Console:
https://developers.google.com/oauthplayground
If you do that, you don't need to pass the API key.
I am using the PHP Google client library. I successfully get a token and refresh token from user/google to use with the API.
As soon as the user revokes the permission for my website in Googles settings on the Google page i get following error:
Error calling GET https://www.googleapis.com/calendar/v3/users/me/calendarList: (401) Invalid Credentials
That is expected behavior since the user revoked my permission.
However, how do I detect that a user revoked that access?
Currently i do the following to see if i have access:
//$token json fetched from database
$gclient->setAccessToken($token);
if ($gclient->getAccessToken())
//i should have access
Well this code unfortunately does not detect the revoked permission. How can i handle that?
Once you have detected that the user has revoked the permission you can ask the user to grant the permission again.
To detect that the grant has been revoked: Provided that you had authorization before,
Making an API call using a revoked access_token will result in a response with status code 401. Like this
{
"error": {
"errors": [
{
"domain": "global",
"reason": "authError",
"message": "Invalid Credentials",
"locationType": "header",
"location": "Authorization"
}
],
"code": 401,
"message": "Invalid Credentials"
}
}
Attempting to refresh a token after the revocation will result in a response with a 400 status code and an invalid_grant message. Just as specified in the RFC 6749, Section 5.2
invalid_grant The provided authorization grant (e.g., authorization
code, resource owner credentials) or refresh token is
invalid, expired, revoked, does not match the redirection
URI used in the authorization request, or was issued to
another client.
Here is an example of such response:
```lang-js
{
"error" : "invalid_grant"
}
```
Google APIs should only return 401 for lack of authorization. Since you had authorization before, receiving a 401 is a reliable indication that the user has revoked access.
Are you looking for a detection mechanism that notifies you of such changes before you make the API call? Today there is not a push notification mechanism from Google that can inform your application of such events. Of course, a pull-based mechanism is not useful -- you can simply make the API call and handle the 401 more efficiently.