Stage 1 Challenge
live preview - azure
- backend: api dotnet5 - oauth identity server - ORM EF core
- client: dotnet5 mvc razor
- admin: reactjs - typescript - tailwind scss redux-saga - oidc-client.js
- database: MSSQL
OAuth 2.0 RFC6749 protocol Open-Id
----------
| Resource |
| Owner |
| |
----------
^
|
(B)
----|----- Client Identifier ---------------
| - ----(A)-- & Redirection URI ---->| |
| User- | | Authorization |
| Agent - ----(B)-- User authenticates --->| Server |
| (web | | |
| browser)- ----(C)-- Authorization Code ---<| |
-|----|--- ---------------
| | ^ v
(A) (C) | |
| | | |
^ v | |
--------- | |
| |>---(D)-- Authorization Code ---------' |
| Client | & Redirection URI |
| | |
| |<---(E)----- Access Token -------------------'
--------- (w/ Optional Refresh Token)
- (A) The client initiates the flow by directing the resource owner's user-agent to the authorization endpoint. The client includes its client identifier, requested scope, local state, and a redirection URI to which the authorization server will send the user-agent back once access is granted (or denied).
- (B) The authorization server authenticates the resource owner (via the user-agent) and establishes whether the resource owner grants or denies the client's access request.
- (C) Assuming the resource owner grants access, the authorization server redirects the user-agent back to the client using the redirection URI provided earlier (in the request or during client registration). The redirection URI includes an authorization code and any local state provided by the client earlier.
- (D) The client requests an access token from the authorization server's token endpoint by including the authorization code received in the previous step. When making the request, the client authenticates with the authorization server. The client includes the redirection URI used to obtain the authorization code for verification.
- (E) The authorization server authenticates the client, validates the authorization code, and ensures that the redirection URI received matches the URI used to redirect the client in step (C). If valid, the authorization server responds back with an access token and, optionally, a refresh token.
----------
| Resource |
| Owner |
| |
----------
^
|
(B)
----|----- Client Identifier ---------------
| - ----(A)-- & Redirection URI --->| |
| User- | | Authorization |
| Agent -|----(B)-- User authenticates -->| Server |
| | | |
| (aka |<---(C)--- Redirection URI ----<| |
| web | with Access Token ---------------
| browser) | in Fragment
| | ---------------
| |----(D)--- Redirection URI ---->| Web-Hosted |
| | without Fragment | Client |
| | | Resource |
| (F) |<---(E)------- Script ---------<| |
| | ---------------
-|--------
| |
(A) (G) Access Token
| |
^ v
------------
| Client |
| JavaScript |
| |
------------
- (A) The client initiates the flow by directing the resource owner's user-agent to the authorization endpoint. The client includes its client identifier, requested scope, local state, and a redirection URI to which the authorization server will send the user-agent back once access is granted (or denied).
- (B) The authorization server authenticates the resource owner (via the user-agent) and establishes whether the resource owner grants or denies the client's access request.
- (C) Assuming the resource owner grants access, the authorization server redirects the user-agent back to the client using the redirection URI provided earlier. The redirection URI includes the access token in the URI fragment.
- (D) The user-agent follows the redirection instructions by making a request to the web-hosted client resource (which does not include the fragment per [RFC2616]). The user-agent retains the fragment information locally.
- (E) The web-hosted client resource returns a web page (typically an HTML document with an embedded script) capable of accessing the full redirection URI including the fragment retained by the user-agent, and extracting the access token (and other parameters) contained in the fragment.
- (F) The user-agent executes the script provided by the web-hosted client resource locally, which extracts the access token.
- (G) The user-agent passes the access token to the client.