Quick script for OAuth2 dancin'

oauth_dance.rb

require 'oauth2'

client_id = ''
client_secret = ''
login_server = 'https://test.salesforce.com'
redirect_uri = 'https://login.salesforce.com/services/oauth2/callback'

client = OAuth2::Client.new(
  client_id,
  client_secret,
  site: login_server,
  authorize_url: '/services/oauth2/authorize',
  token_url: '/services/oauth2/token'
)

# STEP 1
puts "1) Paste this URL into your browser where you are logged in to the relevant account:\n\n"
puts client.auth_code.authorize_url(redirect_uri: redirect_uri)

# STEP 2
puts "\n\n2) Accept the authorization request in your browser."

# STEP 3
puts "\n\n3) Copy the code param from the URL they redirect you to (including the ending '=='), paste it here and hit enter:\n"
code = gets.chomp.strip

access_token_obj = client.auth_code.get_token(code, redirect_uri: redirect_uri, token_method: :post)

# STEP 4
puts "\n\nAccess Token is: #{access_token_obj.token}"
puts "Refresh token is: #{access_token_obj.refresh_token}"