There are two sites - .Net Core site (site1) and Wordpress site (site2). When I have logged on site1 I want to redirect to some page on site2 by link with autologin on site2. Users are duplicated on two databases(site1 - MSSql Server, site2 - MySql). How to pass login credentials to site2 and redirect to link page on this site? Can I use the REST API, what else should I use? Are there any ideas, a simple example?
Thanks!!!
You can called Single Sign On or SSO. You would essentially be bypassing WordPress' authentication methods and use those from a 3rd party. WordPress needs a local user of some kind for normal operations to work (the user_can() function for example.)
So the general gist would be something like this - Send any request for authentication to a 3rd party who will yay or nay and return some data about the user - if yay, check if there is a WordPress user that represents the authenticated user.
If not, create one and add any meta data you might need from the third party. - these WordPress users are like placeholders and every time you successfully authenticate, you update the meta data of the WordPress user to keep things in sync.
This is how OneLogin does it and you can poke around their WordPress plugin to get a sense of how it works.
https://wordpress.org/plugins/onelogin-saml-sso/
Or You can refer this also.
http://carlofontanos.com/auto-login-to-wordpress-from-another-website/
I have an existing Wordpress site. The plan is to rebuild the site using the cakePHP framework. Due to time restrictions, I want to replace individual sections of the Wordpress site one at a time. This will mean that both apps will be running side by side for a certain period of time. I need to control access to the cakePHP app using the authorization provided by Wordpress. I'm not sure the best way to go about doing this. I've seen similar questions asked a lot, but I have not yet found a clear solution.
I'm thinking about two approaches:
Plan A:
Configure Cake to look for Wordpress's authorization cookies.
configure Cake to look at Wordpress's database.
Borrow some of Wordpress's authorization logic to teach Cake's Auth component how to authenticate WP users.
Plan B:
set up an authorization API on my Wordpress site.
set up separate auth component in cake.
ping the WP endpoint when a user hits a protected page in the cake app and then manually log in the user. (This would create a second set of auth cookies)
Do either of these sound like the right approach? Is there a better way to do this?
Helpful references: Article about Cake session handling, Cake Auth component documentation, Cake Auth tutorial, brief overview of WP authorization, a more in depth look at wordpress authorization
UPDATE
We've started working on this, and it seems like it will work, but there is a very tricky aspect involving password hashing that warrants its own question. If you're following this thread, you may want to have a look.
I once had a similar situation: Cross framework authentication zend + codeigniter which was few months ago...
Anyways, this is what I will prefer:
set up an authorization API on my Wordpress site.
set up separate auth component in cake.
ping the WP endpoint when a user hits a protected page in the cake app and then manually log in the user. (This would create a second set of auth cookies)
Here, I would suggest a slight change which is do-able.
Make sure, you have a token system of SSO. As in, when person is logged in on Wordpress, set another cookie which will have a token: Token will be username + password (hashed) + secret key, which will be same between Wordpress and CakePHP. On either site, look up for cookie and manually log the user in or just perform a database look up. Hashing is important for that cookie!
However, if the site is using different domains, you might need to re-strategize:
I had different domains once. At the login or unauthorized page, I would ping the other website and bring up their login box. On the other website if the user is logged in, they get post login page and if request URI has sent a token, we perform normal operation and return the authorized token to this (current) domain.
In simple words:
Site A = WordPress & Site B = CakePHP
Site B hits a page where authorization is required then, ping Site A for a login (as it happens when u do Login-with-Facebook sort), which will request via a Token (private key) and REQUEST_URI which will be part of SSO verification table on Site A, if person is already logged in then, Site A will return (via POST) a token, which further will be decrypted via (private key) of Site B and log the user in. Private key of B and A will be same.
Hope this was understandable.
Questions? :)
Answer to your questions in comment:
Ideally, why we use SSO? We use it because of many constraints. For example: You have a database of say... a million row with more than thousand tables, you need to add a module over ur huge app already... so, instead, you will use another database... SSO will return user information, which can further be replicated. For example, when you click on 'Login with Facebook', it returns requested information, like email address, or user's name or even profile picture. Which can further be added to our database... Keeping different databases is strongly recommended :)
To your 2nd and 3rd question: Should both sites reference the same users table in the database? different databases is recommended unless, you are using the same data. Or say changing the software platform.
Should I copy the site-specific user rows into separate user tables for each app? Yes, that should happen automatically. Once you are registered on a main site, nothing happens, things should happen once you are logged in already and then go to site B... Once logged in, user info can always be requested :) That way, new site will have active users ! 2 birds?
Don't complicate (bother) yourself with how what works but, concentrate on how, what is achievable in short period. SSO - Logged in - Restricted page - Look out for log ins - Either login - If already logged in - fetch user info - If user info exists - login via secondary site OR set the new user info . Done!
We developers love flow charts! Don't we? I just created one:
Further answers:
Does the "Fetch User Info" stage mean that we take the user info from the site which is logged in, and create a new user (row) automatically in the other site?
Ideally, you will ask permission from the user before they 'allow' their info to be used but, it varies how your privacy policies are.
In other words, one site handles all the registration/user-creation and the other site just waits for that user to show up and trigger automatic creation. OR at the moment a user registers on the one site, BOTH databases get a user row inserted?
one site handles all the registration/user-creation and the other site just waits for that user to show up and trigger automatic creation. You can have both. Sign up on your website and also a trigger based automatic creation. Depends on your strategy. OR at the moment a user registers on the one site, BOTH databases get a user row inserted? That would be a horrible practice! It will kill the motive of SSO. Motive of SSO is to create an auth family which can be used by users so that they do not have to register every now and then for different websites. update only one database at a time and other when required :)
Questions? :)
I have done this once. I don't have the snippets and/or any references to anything. But thought it might be helpful.
Configure WP and CakePHP both to use same session, you can do this by session id and session name,
When User registers for your website, register them using both WP and CakePHP,
Choose one framework that will handle login view from the front end. I had chosen CakePHP as I was more proficient with it, once the login is successful locate the same user in other framework's DB and authenticate the user using their authentication system.
Hope this helps !!!
Suggestions:
If you are building a closed system, meaning you have to be signed in to access anything useful in the site, then you can use CAS . I know it's used by mainly universities, but for closed systems it works.
( If you need to handle anonymous users the suggestions below might help)
Keep it simple and, similar to Part A of your plan, have a cookie ( visible by both cake and wordpress ) that simply states if a user is logged in. The cookie should be created/checked by both cake and WP. Cake does not need to look at WP's DB. The cookie can have information on how the users in each system are mapped.
Have a central login screen, this is similar to what CAS does. But please build your own. CAS does not handle anonymous users. I am currently creating a central login screen for work. It's simple. The central login screen will handle all authentication and create the cookie visible to both WP and cake. This would mean that the login link for WP and cake will redirect a user to a common page. The link will need to provide a callback URL so that after the user authenticates successfully, he is redirected back to the original service. You will need to decide on a central DB for user authentication.
The cookie approach has following bonus:
It's a lightweight solution and can be wrapped with an on/off switch. In WP, simply wrap the cookie logic with a wp_options value.
You can use WP's and cake's authentication system. no need to work with API's and/or sessions. No need to couple applications by looking at each other's DB.
You can keep roles and permissions native, meaning WP will work with it's own roles and permissions system and your cake application will work with it's system.
Adding a new "service" to your platform is as simple as "create/check for a cookie" then use the system out-of-the-box auth system to log the user in.
Single Sign On is as simple as creating a cookie. Single Sign Off would be deleting the cookie.
I can definitely go into more detail on each suggestion if you're interested.
I am trying to integrate a product offered by a 3rd party into my web site. This 3rd party does not have the resources to make code changes for a single sign-on type of setup so I am looking for a way to provide a similar user experience through some possible shortcuts. One that I am considering is to use an HTML POST to post the login credentials directly to the form on the login page which would hopefully bypass the page all together and direct the user directly to the home page fully authenticated. Does anyone know if this is possible, and if so how would I go about it?
i don't think it's possible. i believe that most well made authentication will have some sort of nonce in its form, which is essentially to ensure that unless you use their form to submit, the submission will be rejected.
and even if currently they don't have nonce, in the future they might have
I have a scenario where i need to have a user checkout through PayPal and then once we receive the payment then we create a membership record in our membership site. The PayPal requires a "return" field when you submit the form button that will take the user back to our page once the order has been successfully processed. On that page is where we actually track the sale and fire a chunk of javascript to track the sale.
So my question is this, how can i make sure that the return page comes from PayPal and is not spoofed by a user in the system. I know there is a way to use the notify_url to have PayPal post back to our system, but in this case i have to run a chunk of javascript. Is there an easy way to do this, or would i have to write some looping/timeout function that checks to see if the notify post has come through?
Im using .net to do the posting to paypal
You need to have PayPal call a script on your site in order to prevent spoofing. Anything that goes through the client/browser is open to the user for modification, so only things that come directly to your server from PayPal are secure.
I have managed to get all the authentication parts working, however i am confused about setting up registration.
By registration i mean that if the OpenID is not attached to an existing account, then a new account must be created.
Should i simply have it return to a registration page (with from fields for registration) and redirect to a different page if the user is registered?
Is there a way to set up a clean and simple registration flow without signing the user in first (formsauthentication.redirectfromloginpage) then checking if they are new on every page?
Sorry if this is worded badly, like most other things i ask it is difficult to explain!
Thanks
Ideally, no registration is required at all beyond simply an OpenID. Does your site require to know more than a user identifier to provide any functionality at all?
If your site can offer any services to users (even just informational) without asking for more than their identifier, which OpenID supplies, then don't have a registration page at all. This is by far the best for the users and will lower the barrier of entry to new users to your site. Then, when the user accesses a page that offers something that requires the user to give up more information about themselves, stick them with a registration page at that time.
If you must stick up a registration page for all new users, I suggest you do a check every time someone logs in with their OpenID. If you recognize the OpenID Claimed Identifier upon successful login, you just let them through... otherwise you create a database entry for them and redirect them to the registration form.
You can optimize the experience by using OpenID extensions such as Simple Registration or Attribute Exchange so that the user might get a pre-filled out registration form courtesy of the OpenID Provider, further streamlining the registration process.