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authorDMRobertson <DMRobertson@users.noreply.github.com>2023-01-25 16:22:18 +0000
committerDMRobertson <DMRobertson@users.noreply.github.com>2023-01-25 16:22:18 +0000
commit1bf6e63b509f4eee8e4fd2cd75ae13b28fa6368d (patch)
treed28c12a1be40481862ffb6b21be14c337f1a0d68 /v1.76/consent_tracking.html
parentdeploy: b15f0758e59c8705ff50a414a5683286b5972381 (diff)
downloadsynapse-1bf6e63b509f4eee8e4fd2cd75ae13b28fa6368d.tar.xz
deploy: 8a7d2de51fad26cbfb0680482e78c12b5ed90279
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+<!DOCTYPE HTML>
+<html lang="en" class="sidebar-visible no-js light">
+    <head>
+        <!-- Book generated using mdBook -->
+        <meta charset="UTF-8">
+        <title>Consent Tracking - Synapse</title>
+        <!-- Custom HTML head -->
+        <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
+        <meta name="description" content="">
+        <meta name="viewport" content="width=device-width, initial-scale=1">
+        <meta name="theme-color" content="#ffffff" />
+
+        <link rel="icon" href="favicon.svg">
+        <link rel="shortcut icon" href="favicon.png">
+        <link rel="stylesheet" href="css/variables.css">
+        <link rel="stylesheet" href="css/general.css">
+        <link rel="stylesheet" href="css/chrome.css">
+        <link rel="stylesheet" href="css/print.css" media="print">
+        <!-- Fonts -->
+        <link rel="stylesheet" href="FontAwesome/css/font-awesome.css">
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+        <!-- Highlight.js Stylesheets -->
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+        <link rel="stylesheet" href="tomorrow-night.css">
+        <link rel="stylesheet" href="ayu-highlight.css">
+
+        <!-- Custom theme stylesheets -->
+        <link rel="stylesheet" href="docs/website_files/table-of-contents.css">
+        <link rel="stylesheet" href="docs/website_files/remove-nav-buttons.css">
+        <link rel="stylesheet" href="docs/website_files/indent-section-headers.css">
+    </head>
+    <body>
+        <!-- Provide site root to javascript -->
+        <script type="text/javascript">
+            var path_to_root = "";
+            var default_theme = window.matchMedia("(prefers-color-scheme: dark)").matches ? "navy" : "light";
+        </script>
+
+        <!-- Work around some values being stored in localStorage wrapped in quotes -->
+        <script type="text/javascript">
+            try {
+                var theme = localStorage.getItem('mdbook-theme');
+                var sidebar = localStorage.getItem('mdbook-sidebar');
+                if (theme.startsWith('"') && theme.endsWith('"')) {
+                    localStorage.setItem('mdbook-theme', theme.slice(1, theme.length - 1));
+                }
+                if (sidebar.startsWith('"') && sidebar.endsWith('"')) {
+                    localStorage.setItem('mdbook-sidebar', sidebar.slice(1, sidebar.length - 1));
+                }
+            } catch (e) { }
+        </script>
+
+        <!-- Set the theme before any content is loaded, prevents flash -->
+        <script type="text/javascript">
+            var theme;
+            try { theme = localStorage.getItem('mdbook-theme'); } catch(e) { }
+            if (theme === null || theme === undefined) { theme = default_theme; }
+            var html = document.querySelector('html');
+            html.classList.remove('no-js')
+            html.classList.remove('light')
+            html.classList.add(theme);
+            html.classList.add('js');
+        </script>
+
+        <!-- Hide / unhide sidebar before it is displayed -->
+        <script type="text/javascript">
+            var html = document.querySelector('html');
+            var sidebar = 'hidden';
+            if (document.body.clientWidth >= 1080) {
+                try { sidebar = localStorage.getItem('mdbook-sidebar'); } catch(e) { }
+                sidebar = sidebar || 'visible';
+            }
+            html.classList.remove('sidebar-visible');
+            html.classList.add("sidebar-" + sidebar);
+        </script>
+
+        <nav id="sidebar" class="sidebar" aria-label="Table of contents">
+            <div class="sidebar-scrollbox">
+                <ol class="chapter"><li class="chapter-item expanded affix "><li class="part-title">Introduction</li><li class="chapter-item expanded "><a href="welcome_and_overview.html">Welcome and Overview</a></li><li class="chapter-item expanded affix "><li class="part-title">Setup</li><li class="chapter-item expanded "><a href="setup/installation.html">Installation</a></li><li class="chapter-item expanded "><a href="postgres.html">Using Postgres</a></li><li class="chapter-item expanded "><a href="reverse_proxy.html">Configuring a Reverse Proxy</a></li><li class="chapter-item expanded "><a href="setup/forward_proxy.html">Configuring a Forward/Outbound Proxy</a></li><li class="chapter-item expanded "><a href="turn-howto.html">Configuring a Turn Server</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="setup/turn/coturn.html">coturn TURN server</a></li><li class="chapter-item expanded "><a href="setup/turn/eturnal.html">eturnal TURN server</a></li></ol></li><li class="chapter-item expanded "><a href="delegate.html">Delegation</a></li><li class="chapter-item expanded affix "><li class="part-title">Upgrading</li><li class="chapter-item expanded "><a href="upgrade.html">Upgrading between Synapse Versions</a></li><li class="chapter-item expanded affix "><li class="part-title">Usage</li><li class="chapter-item expanded "><a href="federate.html">Federation</a></li><li class="chapter-item expanded "><a href="usage/configuration/index.html">Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/configuration/config_documentation.html">Configuration Manual</a></li><li class="chapter-item expanded "><a href="usage/configuration/homeserver_sample_config.html">Homeserver Sample Config File</a></li><li class="chapter-item expanded "><a href="usage/configuration/logging_sample_config.html">Logging Sample Config File</a></li><li class="chapter-item expanded "><a href="structured_logging.html">Structured Logging</a></li><li class="chapter-item expanded "><a href="templates.html">Templates</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/index.html">User Authentication</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/index.html">Single-Sign On</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="openid.html">OpenID Connect</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/single_sign_on/cas.html">CAS</a></li><li class="chapter-item expanded "><a href="sso_mapping_providers.html">SSO Mapping Providers</a></li></ol></li><li class="chapter-item expanded "><a href="password_auth_providers.html">Password Auth Providers</a></li><li class="chapter-item expanded "><a href="jwt.html">JSON Web Tokens</a></li><li class="chapter-item expanded "><a href="usage/configuration/user_authentication/refresh_tokens.html">Refresh Tokens</a></li></ol></li><li class="chapter-item expanded "><a href="CAPTCHA_SETUP.html">Registration Captcha</a></li><li class="chapter-item expanded "><a href="application_services.html">Application Services</a></li><li class="chapter-item expanded "><a href="server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="consent_tracking.html" class="active">Consent Tracking</a></li><li class="chapter-item expanded "><a href="user_directory.html">User Directory</a></li><li class="chapter-item expanded "><a href="message_retention_policies.html">Message Retention Policies</a></li><li class="chapter-item expanded "><a href="modules/index.html">Pluggable Modules</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/writing_a_module.html">Writing a module</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="modules/spam_checker_callbacks.html">Spam checker callbacks</a></li><li class="chapter-item expanded "><a href="modules/third_party_rules_callbacks.html">Third-party rules callbacks</a></li><li class="chapter-item expanded "><a href="modules/presence_router_callbacks.html">Presence router callbacks</a></li><li class="chapter-item expanded "><a href="modules/account_validity_callbacks.html">Account validity callbacks</a></li><li class="chapter-item expanded "><a href="modules/password_auth_provider_callbacks.html">Password auth provider callbacks</a></li><li class="chapter-item expanded "><a href="modules/background_update_controller_callbacks.html">Background update controller callbacks</a></li><li class="chapter-item expanded "><a href="modules/account_data_callbacks.html">Account data callbacks</a></li><li class="chapter-item expanded "><a href="modules/porting_legacy_module.html">Porting a legacy module to the new interface</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="workers.html">Workers</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="synctl_workers.html">Using synctl with Workers</a></li><li class="chapter-item expanded "><a href="systemd-with-workers/index.html">Systemd</a></li></ol></li></ol></li><li class="chapter-item expanded "><a href="usage/administration/index.html">Administration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="usage/administration/admin_api/index.html">Admin API</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="admin_api/account_validity.html">Account Validity</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/background_updates.html">Background Updates</a></li><li class="chapter-item expanded "><a href="admin_api/event_reports.html">Event Reports</a></li><li class="chapter-item expanded "><a href="admin_api/media_admin_api.html">Media</a></li><li class="chapter-item expanded "><a href="admin_api/purge_history_api.html">Purge History</a></li><li class="chapter-item expanded "><a href="admin_api/register_api.html">Register Users</a></li><li class="chapter-item expanded "><a href="usage/administration/admin_api/registration_tokens.html">Registration Tokens</a></li><li class="chapter-item expanded "><a href="admin_api/room_membership.html">Manipulate Room Membership</a></li><li class="chapter-item expanded "><a href="admin_api/rooms.html">Rooms</a></li><li class="chapter-item expanded "><a href="admin_api/server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="admin_api/statistics.html">Statistics</a></li><li class="chapter-item expanded "><a href="admin_api/user_admin_api.html">Users</a></li><li class="chapter-item expanded "><a href="admin_api/version_api.html">Server Version</a></li><li class="chapter-item expanded "><a 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class="chapter-item expanded "><a href="development/demo.html">Demo scripts</a></li></ol></li><li class="chapter-item expanded "><a href="opentracing.html">OpenTracing</a></li><li class="chapter-item expanded "><a href="development/database_schema.html">Database Schemas</a></li><li class="chapter-item expanded "><a href="development/experimental_features.html">Experimental features</a></li><li class="chapter-item expanded "><a href="development/dependencies.html">Dependency management</a></li><li class="chapter-item expanded "><div>Synapse Architecture</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/synapse_architecture/cancellation.html">Cancellation</a></li><li class="chapter-item expanded "><a href="log_contexts.html">Log Contexts</a></li><li class="chapter-item expanded "><a href="replication.html">Replication</a></li><li class="chapter-item expanded "><a href="tcp_replication.html">TCP Replication</a></li></ol></li><li class="chapter-item expanded "><a href="development/internal_documentation/index.html">Internal Documentation</a></li><li><ol class="section"><li class="chapter-item expanded "><div>Single Sign-On</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="development/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="development/cas.html">CAS</a></li></ol></li><li class="chapter-item expanded "><a href="development/room-dag-concepts.html">Room DAG concepts</a></li><li class="chapter-item expanded "><div>State Resolution</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="auth_chain_difference_algorithm.html">The Auth Chain Difference Algorithm</a></li></ol></li><li class="chapter-item expanded "><a href="media_repository.html">Media Repository</a></li><li class="chapter-item expanded "><a href="room_and_user_statistics.html">Room and User Statistics</a></li></ol></li><li class="chapter-item expanded "><div>Scripts</div></li><li 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+            <div id="sidebar-resize-handle" class="sidebar-resize-handle"></div>
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+                    Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
+                        link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
+                    });
+                </script>
+
+                <div id="content" class="content">
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+                        <!-- Page table of contents -->
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+                            <nav class="pagetoc"></nav>
+                        </div>
+
+                        <h1 id="support-in-synapse-for-tracking-agreement-to-server-terms-and-conditions"><a class="header" href="#support-in-synapse-for-tracking-agreement-to-server-terms-and-conditions">Support in Synapse for tracking agreement to server terms and conditions</a></h1>
+<p>Synapse 0.30 introduces support for tracking whether users have agreed to the
+terms and conditions set by the administrator of a server - and blocking access
+to the server until they have.</p>
+<p>There are several parts to this functionality; each requires some specific
+configuration in <code>homeserver.yaml</code> to be enabled.</p>
+<p>Note that various parts of the configuation and this document refer to the
+&quot;privacy policy&quot;: agreement with a privacy policy is one particular use of this
+feature, but of course adminstrators can specify other terms and conditions
+unrelated to &quot;privacy&quot; per se.</p>
+<h2 id="collecting-policy-agreement-from-a-user"><a class="header" href="#collecting-policy-agreement-from-a-user">Collecting policy agreement from a user</a></h2>
+<p>Synapse can be configured to serve the user a simple policy form with an
+&quot;accept&quot; button. Clicking &quot;Accept&quot; records the user's acceptance in the
+database and shows a success page.</p>
+<p>To enable this, first create templates for the policy and success pages.
+These should be stored on the local filesystem.</p>
+<p>These templates use the <a href="http://jinja.pocoo.org">Jinja2</a> templating language,
+and <a href="https://github.com/matrix-org/synapse/tree/develop/docs/privacy_policy_templates/">docs/privacy_policy_templates</a>
+gives examples of the sort of thing that can be done.</p>
+<p>Note that the templates must be stored under a name giving the language of the
+template - currently this must always be <code>en</code> (for &quot;English&quot;);
+internationalisation support is intended for the future.</p>
+<p>The template for the policy itself should be versioned and named according to
+the version: for example <code>1.0.html</code>. The version of the policy which the user
+has agreed to is stored in the database.</p>
+<p>Once the templates are in place, make the following changes to <code>homeserver.yaml</code>:</p>
+<ol>
+<li>
+<p>Add a <code>user_consent</code> section, which should look like:</p>
+<pre><code class="language-yaml">user_consent:
+  template_dir: privacy_policy_templates
+  version: 1.0
+</code></pre>
+<p><code>template_dir</code> points to the directory containing the policy
+templates. <code>version</code> defines the version of the policy which will be served
+to the user. In the example above, Synapse will serve
+<code>privacy_policy_templates/en/1.0.html</code>.</p>
+</li>
+<li>
+<p>Add a <code>form_secret</code> setting at the top level:</p>
+<pre><code class="language-yaml">form_secret: &quot;&lt;unique secret&gt;&quot;
+</code></pre>
+<p>This should be set to an arbitrary secret string (try <code>pwgen -y 30</code> to
+generate suitable secrets).</p>
+<p>More on what this is used for below.</p>
+</li>
+<li>
+<p>Add <code>consent</code> wherever the <code>client</code> resource is currently enabled in the
+<code>listeners</code> configuration. For example:</p>
+<pre><code class="language-yaml">listeners:
+  - port: 8008
+    resources:
+      - names:
+        - client
+        - consent
+</code></pre>
+</li>
+</ol>
+<p>Finally, ensure that <code>jinja2</code> is installed. If you are using a virtualenv, this
+should be a matter of <code>pip install Jinja2</code>. On debian, try <code>apt-get install python-jinja2</code>.</p>
+<p>Once this is complete, and the server has been restarted, try visiting
+<code>https://&lt;server&gt;/_matrix/consent</code>. If correctly configured, this should give
+an error &quot;Missing string query parameter 'u'&quot;. It is now possible to manually
+construct URIs where users can give their consent.</p>
+<h3 id="enabling-consent-tracking-at-registration"><a class="header" href="#enabling-consent-tracking-at-registration">Enabling consent tracking at registration</a></h3>
+<ol>
+<li>
+<p>Add the following to your configuration:</p>
+<pre><code class="language-yaml">user_consent:
+  require_at_registration: true
+  policy_name: &quot;Privacy Policy&quot; # or whatever you'd like to call the policy
+</code></pre>
+</li>
+<li>
+<p>In your consent templates, make use of the <code>public_version</code> variable to
+see if an unauthenticated user is viewing the page. This is typically
+wrapped around the form that would be used to actually agree to the document:</p>
+<pre><code class="language-html">{% if not public_version %}
+  &lt;!-- The variables used here are only provided when the 'u' param is given to the homeserver --&gt;
+  &lt;form method=&quot;post&quot; action=&quot;consent&quot;&gt;
+    &lt;input type=&quot;hidden&quot; name=&quot;v&quot; value=&quot;{{version}}&quot;/&gt;
+    &lt;input type=&quot;hidden&quot; name=&quot;u&quot; value=&quot;{{user}}&quot;/&gt;
+    &lt;input type=&quot;hidden&quot; name=&quot;h&quot; value=&quot;{{userhmac}}&quot;/&gt;
+    &lt;input type=&quot;submit&quot; value=&quot;Sure thing!&quot;/&gt;
+  &lt;/form&gt;
+{% endif %}
+</code></pre>
+</li>
+<li>
+<p>Restart Synapse to apply the changes.</p>
+</li>
+</ol>
+<p>Visiting <code>https://&lt;server&gt;/_matrix/consent</code> should now give you a view of the privacy
+document. This is what users will be able to see when registering for accounts.</p>
+<h3 id="constructing-the-consent-uri"><a class="header" href="#constructing-the-consent-uri">Constructing the consent URI</a></h3>
+<p>It may be useful to manually construct the &quot;consent URI&quot; for a given user - for
+instance, in order to send them an email asking them to consent. To do this,
+take the base <code>https://&lt;server&gt;/_matrix/consent</code> URL and add the following
+query parameters:</p>
+<ul>
+<li>
+<p><code>u</code>: the user id of the user. This can either be a full MXID
+(<code>@user:server.com</code>) or just the localpart (<code>user</code>).</p>
+</li>
+<li>
+<p><code>h</code>: hex-encoded HMAC-SHA256 of <code>u</code> using the <code>form_secret</code> as a key. It is
+possible to calculate this on the commandline with something like:</p>
+<pre><code class="language-bash">echo -n '&lt;user&gt;' | openssl sha256 -hmac '&lt;form_secret&gt;'
+</code></pre>
+<p>This should result in a URI which looks something like:
+<code>https://&lt;server&gt;/_matrix/consent?u=&lt;user&gt;&amp;h=68a152465a4d...</code>.</p>
+</li>
+</ul>
+<p>Note that not providing a <code>u</code> parameter will be interpreted as wanting to view
+the document from an unauthenticated perspective, such as prior to registration.
+Therefore, the <code>h</code> parameter is not required in this scenario. To enable this
+behaviour, set <code>require_at_registration</code> to <code>true</code> in your <code>user_consent</code> config.</p>
+<h2 id="sending-users-a-server-notice-asking-them-to-agree-to-the-policy"><a class="header" href="#sending-users-a-server-notice-asking-them-to-agree-to-the-policy">Sending users a server notice asking them to agree to the policy</a></h2>
+<p>It is possible to configure Synapse to send a <a href="server_notices.html">server
+notice</a> to anybody who has not yet agreed to the current
+version of the policy. To do so:</p>
+<ul>
+<li>
+<p>ensure that the consent resource is configured, as in the previous section</p>
+</li>
+<li>
+<p>ensure that server notices are configured, as in <a href="server_notices.html">the server notice documentation</a>.</p>
+</li>
+<li>
+<p>Add <code>server_notice_content</code> under <code>user_consent</code> in <code>homeserver.yaml</code>. For
+example:</p>
+<pre><code class="language-yaml">user_consent:
+  server_notice_content:
+    msgtype: m.text
+    body: &gt;-
+      Please give your consent to the privacy policy at %(consent_uri)s.
+</code></pre>
+<p>Synapse automatically replaces the placeholder <code>%(consent_uri)s</code> with the
+consent uri for that user.</p>
+</li>
+<li>
+<p>ensure that <code>public_baseurl</code> is set in <code>homeserver.yaml</code>, and gives the base
+URI that clients use to connect to the server. (It is used to construct
+<code>consent_uri</code> in the server notice.)</p>
+</li>
+</ul>
+<h2 id="blocking-users-from-using-the-server-until-they-agree-to-the-policy"><a class="header" href="#blocking-users-from-using-the-server-until-they-agree-to-the-policy">Blocking users from using the server until they agree to the policy</a></h2>
+<p>Synapse can be configured to block any attempts to join rooms or send messages
+until the user has given their agreement to the policy. (Joining the server
+notices room is exempted from this).</p>
+<p>To enable this, add <code>block_events_error</code> under <code>user_consent</code>. For example:</p>
+<pre><code class="language-yaml">user_consent:
+  block_events_error: &gt;-
+    You can't send any messages until you consent to the privacy policy at
+    %(consent_uri)s.
+</code></pre>
+<p>Synapse automatically replaces the placeholder <code>%(consent_uri)s</code> with the
+consent uri for that user.</p>
+<p>ensure that <code>public_baseurl</code> is set in <code>homeserver.yaml</code>, and gives the base
+URI that clients use to connect to the server. (It is used to construct
+<code>consent_uri</code> in the error.)</p>
+
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