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In general the +documentation for +<a href="https://matrix.org/docs/spec/client_server/r0.6.1#login">the login endpoint</a> +is still valid (and the mechanism works similarly to the +<a href="https://matrix.org/docs/spec/client_server/r0.6.1#token-based">token based login</a>).</p> +<p>To log in using a JSON Web Token, clients should submit a <code>/login</code> request as +follows:</p> +<pre><code class="language-json">{ + "type": "org.matrix.login.jwt", + "token": "<jwt>" +} +</code></pre> +<p>The <code>token</code> field should include the JSON web token with the following claims:</p> +<ul> +<li>A claim that encodes the local part of the user ID is required. By default, +the <code>sub</code> (subject) claim is used, or a custom claim can be set in the +configuration file.</li> +<li>The expiration time (<code>exp</code>), not before time (<code>nbf</code>), and issued at (<code>iat</code>) +claims are optional, but validated if present.</li> +<li>The issuer (<code>iss</code>) claim is optional, but required and validated if configured.</li> +<li>The audience (<code>aud</code>) claim is optional, but required and validated if configured. +Providing the audience claim when not configured will cause validation to fail.</li> +</ul> +<p>In the case that the token is not valid, the homeserver must respond with +<code>403 Forbidden</code> and an error code of <code>M_FORBIDDEN</code>.</p> +<p>As with other login types, there are additional fields (e.g. <code>device_id</code> and +<code>initial_device_display_name</code>) which can be included in the above request.</p> +<h2 id="preparing-synapse"><a class="header" href="#preparing-synapse">Preparing Synapse</a></h2> +<p>The JSON Web Token integration in Synapse uses the +<a href="https://docs.authlib.org/en/latest/index.html"><code>Authlib</code></a> library, which must be installed +as follows:</p> +<ul> +<li> +<p>The relevant libraries are included in the Docker images and Debian packages +provided by <code>matrix.org</code> so no further action is needed.</p> +</li> +<li> +<p>If you installed Synapse into a virtualenv, run <code>/path/to/env/bin/pip install synapse[jwt]</code> to install the necessary dependencies.</p> +</li> +<li> +<p>For other installation mechanisms, see the documentation provided by the +maintainer.</p> +</li> +</ul> +<p>To enable the JSON web token integration, you should then add a <code>jwt_config</code> option +to your configuration file. See the <a href="usage/configuration/config_documentation.html#jwt_config">configuration manual</a> for some +sample settings.</p> +<h2 id="how-to-test-jwt-as-a-developer"><a class="header" href="#how-to-test-jwt-as-a-developer">How to test JWT as a developer</a></h2> +<p>Although JSON Web Tokens are typically generated from an external server, the +example below uses a locally generated JWT.</p> +<ol> +<li> +<p>Configure Synapse with JWT logins, note that this example uses a pre-shared +secret and an algorithm of HS256:</p> +<pre><code class="language-yaml">jwt_config: + enabled: true + secret: "my-secret-token" + algorithm: "HS256" +</code></pre> +</li> +<li> +<p>Generate a JSON web token:</p> +<p>You can use the following short Python snippet to generate a JWT +protected by an HMAC. +Take care that the <code>secret</code> and the algorithm given in the <code>header</code> match +the entries from <code>jwt_config</code> above.</p> +<pre><code class="language-python">from authlib.jose import jwt + +header = {"alg": "HS256"} +payload = {"sub": "user1", "aud": ["audience"]} +secret = "my-secret-token" +result = jwt.encode(header, payload, secret) +print(result.decode("ascii")) +</code></pre> +</li> +<li> +<p>Query for the login types and ensure <code>org.matrix.login.jwt</code> is there:</p> +<pre><code class="language-bash">curl http://localhost:8080/_matrix/client/r0/login +</code></pre> +</li> +<li> +<p>Login used the generated JSON web token from above:</p> +<pre><code class="language-bash">$ curl http://localhost:8082/_matrix/client/r0/login -X POST \ + --data '{"type":"org.matrix.login.jwt","token":"eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJ0ZXN0LXVzZXIifQ.Ag71GT8v01UO3w80aqRPTeuVPBIBZkYhNTJJ-_-zQIc"}' +{ + "access_token": "<access token>", + "device_id": "ACBDEFGHI", + "home_server": "localhost:8080", + "user_id": "@test-user:localhost:8480" +} +</code></pre> +</li> +</ol> +<p>You should now be able to use the returned access token to query the client API.</p> + + </main> + + <nav class="nav-wrapper" aria-label="Page navigation"> + <!-- Mobile navigation buttons --> + <a rel="prev" href="password_auth_providers.html" class="mobile-nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="usage/configuration/user_authentication/refresh_tokens.html" class="mobile-nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + <div style="clear: both"></div> + </nav> + </div> + </div> + + <nav class="nav-wide-wrapper" aria-label="Page navigation"> + <a rel="prev" href="password_auth_providers.html" class="nav-chapters previous" title="Previous chapter" aria-label="Previous chapter" aria-keyshortcuts="Left"> + <i class="fa fa-angle-left"></i> + </a> + <a rel="next" href="usage/configuration/user_authentication/refresh_tokens.html" class="nav-chapters next" title="Next chapter" aria-label="Next chapter" aria-keyshortcuts="Right"> + <i class="fa fa-angle-right"></i> + </a> + </nav> + + </div> + + <script type="text/javascript"> + window.playground_copyable = true; + </script> + <script src="elasticlunr.min.js" type="text/javascript" charset="utf-8"></script> + <script src="mark.min.js" type="text/javascript" charset="utf-8"></script> + <script src="searcher.js" type="text/javascript" charset="utf-8"></script> + <script src="clipboard.min.js" type="text/javascript" charset="utf-8"></script> + <script src="highlight.js" type="text/javascript" charset="utf-8"></script> + <script src="book.js" type="text/javascript" charset="utf-8"></script> + + <!-- Custom JS scripts --> + <script type="text/javascript" src="docs/website_files/table-of-contents.js"></script> + </body> +</html> \ No newline at end of file |