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Merge pull request #1065 from sul-dlss/iiif-authv2
Move token controller to a iiif/auth/v1 directory
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,125 @@ | ||
| # frozen_string_literal: true | ||
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| # API to create IIIF Authentication access tokens | ||
| module Iiif | ||
| module Auth | ||
| module V1 | ||
| # Creates tokens for IIIF auth v1 | ||
| class TokenController < ApplicationController | ||
| skip_forgery_protection | ||
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| def create | ||
| token = mint_bearer_token if token_eligible_user? | ||
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| write_bearer_token_cookie(token) if token | ||
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| @message = if token | ||
| { | ||
| accessToken: token, | ||
| tokenType: 'Bearer', | ||
| expiresIn: 3600 | ||
| } | ||
| else | ||
| { error: 'missingCredentials', description: '' } | ||
| end | ||
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| if browser_based_client_auth? | ||
| create_for_browser_based_client_application_auth | ||
| else | ||
| create_for_json_access_token_auth(token) | ||
| end | ||
| end | ||
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| def create_for_item | ||
| if current_user.cdl_tokens.none? { |payload| payload['aud'] == params[:id] } | ||
| @message = { error: 'missingCredentials', description: '' } | ||
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| if browser_based_client_auth? | ||
| create_for_browser_based_client_application_auth | ||
| else | ||
| create_for_json_access_token_auth(nil) | ||
| end | ||
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| return | ||
| end | ||
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| create | ||
| end | ||
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| private | ||
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| # An authenticated user can retrieve a token if they are logged in with webauth, as an | ||
| # app-user, or are accessing material from a location-specific kiosk. | ||
| # Other anonymous users are not eligible. | ||
| def token_eligible_user? | ||
| current_user.token_user? || | ||
| current_user.webauth_user? || | ||
| current_user.location? || | ||
| current_user.cdl_tokens.any? | ||
| end | ||
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| # Handle IIIF Authentication 1.0 browser-based client application requests | ||
| # See {http://iiif.io/api/auth/1.0/#interaction-for-browser-based-client-applications} | ||
| def create_for_browser_based_client_application_auth | ||
| browser_params.require(:origin) | ||
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| # The browser-based interaction requires using iframes | ||
| # We disable this header (added by default) entirely to ensure | ||
| # that IIIF viewers embedded by iframes in other pages will | ||
| # work as expected. | ||
| response.headers['X-Frame-Options'] = "" | ||
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| @message[:messageId] = browser_params[:messageId] | ||
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| @origin = browser_params[:origin] | ||
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| render 'create', layout: false | ||
| end | ||
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| # Handle IIIF Authentication 1.0 JSON Access Token requests | ||
| # See {http://iiif.io/api/auth/1.0/#the-json-access-token-response} | ||
| def create_for_json_access_token_auth(token) | ||
| status = if callback_value || token | ||
| :ok | ||
| else | ||
| :unauthorized | ||
| end | ||
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| render json: @message.to_json, callback: callback_value, status: | ||
| end | ||
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| def json_params | ||
| params.permit(:callback) | ||
| end | ||
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| def browser_params | ||
| params.permit(:messageId, :origin) | ||
| end | ||
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| def browser_based_client_auth? | ||
| browser_params[:messageId].present? | ||
| end | ||
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| def callback_value | ||
| json_params[:callback] | ||
| end | ||
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| def mint_bearer_token | ||
| encode_credentials(current_user.token).sub('Token ', '') | ||
| end | ||
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| def write_bearer_token_cookie(token) | ||
| # webauth users already have a webauth cookie; no additional cookie needed | ||
| return if current_user.webauth_user? | ||
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| cookies[:bearer_token] = { | ||
| value: token, | ||
| expires: 1.hour.from_now, | ||
| httponly: true, | ||
| secure: request.ssl? | ||
| } | ||
| end | ||
| end | ||
| end | ||
| end | ||
| end |
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