Monks,

I have spent the last 2 days scouring the internet for information on how to authenticate a perl app using oauth2. There are a half-dozen modules that claim to assist with this process, and not a single one has documentation or examples or any hint on how to construct the request successfully.

I decided to work with LWP::Authen::OAuth2 and came up with the following code (This is for attempting to authenticate with Yahoo).

The number one issue I have is the redirect_uri. It seems like the oauth2 spec always assumes that any developer has access to their own website to host a redirect page on? This must be super-obvious, because every tutorial site just hand-waves over this parameter with "put your redirect uri here" without even attempting to suggest what one might look like, especially if you're running a standalone application. Some sites mentioned that you can redirect to localhost... again, without any sort of suggestion as to how you might do that.

So... question 1. How to I form a redirect URI for a locally executed application in a windows environment?

I'm sure I have more questions and errors in my code, but I won't be able to find those until I can fill in some reasonable value for the redirect_uri.

use LWP::Authen::Oauth2;
use Storable; #to save and restore token for future use
use Term::Prompt;
use strict;
use warnings;

my $oauth2 = LWP::Authen::OAuth2->new(
    client_id => '*****',
    client_secret => '*****',
    redirect_uri => 'I don't even know',
    scope => 'fspt-w',
    response_type => 'id_token'
                             );

my $url = $oauth2->authorization_url('https://api.login.yahoo.com/oaut
+h2/request_auth');
my $code = prompt('x', 'Paste the code obtained at the above URL here:
+ ', '', ''); 

# Exchange the code for an access token:
my $token = $oauth2->get_access_token($code) or die;

# If we get to here, it worked!  Report success: 
print "\nToken obtained successfully!\n";
print "Here are the token contents (just FYI):\n\n";
print $token->to_string, "\n";

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In reply to Oauth2 help needed by superwombat

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