2021-09-21 16:05:07 +03:00
<!DOCTYPE HTML>
< html lang = "en" class = "sidebar-visible no-js light" >
< head >
<!-- Book generated using mdBook -->
< meta charset = "UTF-8" >
< title > Spam checker callbacks - 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" >
< link rel = "stylesheet" href = "../fonts/fonts.css" >
<!-- Highlight.js Stylesheets -->
< link rel = "stylesheet" href = "../highlight.css" >
< 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" >
2023-11-17 16:44:41 +03:00
< 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" > 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 "
2021-09-21 16:05:07 +03:00
< / div >
< div id = "sidebar-resize-handle" class = "sidebar-resize-handle" > < / div >
< / nav >
< div id = "page-wrapper" class = "page-wrapper" >
< div class = "page" >
< div id = "menu-bar-hover-placeholder" > < / div >
< div id = "menu-bar" class = "menu-bar sticky bordered" >
< div class = "left-buttons" >
< button id = "sidebar-toggle" class = "icon-button" type = "button" title = "Toggle Table of Contents" aria-label = "Toggle Table of Contents" aria-controls = "sidebar" >
< i class = "fa fa-bars" > < / i >
< / button >
< button id = "theme-toggle" class = "icon-button" type = "button" title = "Change theme" aria-label = "Change theme" aria-haspopup = "true" aria-expanded = "false" aria-controls = "theme-list" >
< i class = "fa fa-paint-brush" > < / i >
< / button >
< ul id = "theme-list" class = "theme-popup" aria-label = "Themes" role = "menu" >
< li role = "none" > < button role = "menuitem" class = "theme" id = "light" > Light (default)< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "rust" > Rust< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "coal" > Coal< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "navy" > Navy< / button > < / li >
< li role = "none" > < button role = "menuitem" class = "theme" id = "ayu" > Ayu< / button > < / li >
< / ul >
< button id = "search-toggle" class = "icon-button" type = "button" title = "Search. (Shortkey: s)" aria-label = "Toggle Searchbar" aria-expanded = "false" aria-keyshortcuts = "S" aria-controls = "searchbar" >
< i class = "fa fa-search" > < / i >
< / button >
< / div >
< h1 class = "menu-title" > Synapse< / h1 >
< div class = "right-buttons" >
< a href = "../print.html" title = "Print this book" aria-label = "Print this book" >
< i id = "print-button" class = "fa fa-print" > < / i >
< / a >
< a href = "https://github.com/matrix-org/synapse" title = "Git repository" aria-label = "Git repository" >
< i id = "git-repository-button" class = "fa fa-github" > < / i >
< / a >
< a href = "https://github.com/matrix-org/synapse/edit/develop/docs/modules/spam_checker_callbacks.md" title = "Suggest an edit" aria-label = "Suggest an edit" >
< i id = "git-edit-button" class = "fa fa-edit" > < / i >
< / a >
< / div >
< / div >
< div id = "search-wrapper" class = "hidden" >
< form id = "searchbar-outer" class = "searchbar-outer" >
< input type = "search" id = "searchbar" name = "searchbar" placeholder = "Search this book ..." aria-controls = "searchresults-outer" aria-describedby = "searchresults-header" >
< / form >
< div id = "searchresults-outer" class = "searchresults-outer hidden" >
< div id = "searchresults-header" class = "searchresults-header" > < / div >
< ul id = "searchresults" >
< / ul >
< / div >
< / div >
<!-- Apply ARIA attributes after the sidebar and the sidebar toggle button are added to the DOM -->
< script type = "text/javascript" >
document.getElementById('sidebar-toggle').setAttribute('aria-expanded', sidebar === 'visible');
document.getElementById('sidebar').setAttribute('aria-hidden', sidebar !== 'visible');
Array.from(document.querySelectorAll('#sidebar a')).forEach(function(link) {
link.setAttribute('tabIndex', sidebar === 'visible' ? 0 : -1);
});
< / script >
< div id = "content" class = "content" >
< main >
<!-- Page table of contents -->
< div class = "sidetoc" >
< nav class = "pagetoc" > < / nav >
< / div >
< h1 id = "spam-checker-callbacks" > < a class = "header" href = "#spam-checker-callbacks" > Spam checker callbacks< / a > < / h1 >
< p > Spam checker callbacks allow module developers to implement spam mitigation actions for
Synapse instances. Spam checker callbacks can be registered using the module API's
< code > register_spam_checker_callbacks< / code > method.< / p >
< h2 id = "callbacks" > < a class = "header" href = "#callbacks" > Callbacks< / a > < / h2 >
< p > The available spam checker callbacks are:< / p >
< h3 id = "check_event_for_spam" > < a class = "header" href = "#check_event_for_spam" > < code > check_event_for_spam< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-05-31 16:28:14 +03:00
< p > < em > Changed in Synapse v1.60.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean or a string is now deprecated.< / em > < / p >
< pre > < code class = "language-python" > async def check_event_for_spam(event: " synapse.module_api.EventBase" ) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , str, bool]
2021-09-21 16:05:07 +03:00
< / code > < / pre >
2022-05-31 16:28:14 +03:00
< p > Called when receiving an event from a client or via federation. The callback must return one of:< / p >
2022-03-08 18:38:01 +03:00
< ul >
2022-05-31 16:28:14 +03:00
< li > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / li >
< li > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / li >
< li > (deprecated) a non-< code > Codes< / code > < code > str< / code > to reject the operation and specify an error message. Note that clients
typically will not localize the error message to the user's preferred locale.< / li >
< li > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / li >
< li > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / li >
2022-03-08 18:38:01 +03:00
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-05-31 16:28:14 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-10-19 14:44:53 +03:00
< h3 id = "user_may_join_room" > < a class = "header" href = "#user_may_join_room" > < code > user_may_join_room< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-07-05 15:25:53 +03:00
< p > < em > Changed in Synapse v1.61.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean is now deprecated.< / em > < / p >
< pre > < code class = "language-python" > async def user_may_join_room(user: str, room: str, is_invited: bool) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , bool]
2021-10-19 14:44:53 +03:00
< / code > < / pre >
2022-07-05 15:25:53 +03:00
< p > Called when a user is trying to join a room. The user is represented by their Matrix user ID (e.g.
2021-10-19 14:44:53 +03:00
< code > @alice:example.com< / code > ) and the room is represented by its Matrix ID (e.g.
< code > !room:example.com< / code > ). The module is also given a boolean to indicate whether the user
currently has a pending invite in the room.< / p >
< p > This callback isn't called if the join is performed by a server administrator, or in the
context of a room creation.< / p >
2022-07-05 15:25:53 +03:00
< p > The callback must return one of:< / p >
< ul >
< li > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / li >
< li > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / li >
< li > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / li >
< li > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-07-05 15:25:53 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-09-21 16:05:07 +03:00
< h3 id = "user_may_invite" > < a class = "header" href = "#user_may_invite" > < code > user_may_invite< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-07-05 15:25:53 +03:00
< p > < em > Changed in Synapse v1.62.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean is now deprecated.< / em > < / p >
< pre > < code class = "language-python" > async def user_may_invite(inviter: str, invitee: str, room_id: str) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , bool]
2021-09-21 16:05:07 +03:00
< / code > < / pre >
2022-07-05 15:25:53 +03:00
< p > Called when processing an invitation. Both inviter and invitee are
represented by their Matrix user ID (e.g. < code > @alice:example.com< / code > ).< / p >
< p > The callback must return one of:< / p >
< ul >
< li >
< p > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / p >
< / li >
< li >
< p > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / p >
< / li >
< li >
< p > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / p >
< / li >
< li >
< p > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / p >
< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-07-05 15:25:53 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-10-19 14:44:53 +03:00
< h3 id = "user_may_send_3pid_invite" > < a class = "header" href = "#user_may_send_3pid_invite" > < code > user_may_send_3pid_invite< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.45.0< / em > < / p >
2022-07-05 15:25:53 +03:00
< p > < em > Changed in Synapse v1.62.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean is now deprecated.< / em > < / p >
2021-10-19 14:44:53 +03:00
< pre > < code class = "language-python" > async def user_may_send_3pid_invite(
inviter: str,
medium: str,
address: str,
room_id: str,
2022-07-05 15:25:53 +03:00
) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , bool]
2021-10-19 14:44:53 +03:00
< / code > < / pre >
< p > Called when processing an invitation using a third-party identifier (also called a 3PID,
2022-07-05 15:25:53 +03:00
e.g. an email address or a phone number). < / p >
2021-10-19 14:44:53 +03:00
< p > The inviter is represented by their Matrix user ID (e.g. < code > @alice:example.com< / code > ), and the
invitee is represented by its medium (e.g. " email" ) and its address
(e.g. < code > alice@example.com< / code > ). See < a href = "https://matrix.org/docs/spec/appendices#pid-types" > the Matrix specification< / a >
for more information regarding third-party identifiers.< / p >
< p > For example, a call to this callback to send an invitation to the email address
< code > alice@example.com< / code > would look like this:< / p >
< pre > < code class = "language-python" > await user_may_send_3pid_invite(
" @bob:example.com" , # The inviter's user ID
" email" , # The medium of the 3PID to invite
" alice@example.com" , # The address of the 3PID to invite
" !some_room:example.com" , # The ID of the room to send the invite into
)
< / code > < / pre >
< p > < strong > Note< / strong > : If the third-party identifier is already associated with a matrix user ID,
< a href = "#user_may_invite" > < code > user_may_invite< / code > < / a > will be used instead.< / p >
2022-07-05 15:25:53 +03:00
< p > The callback must return one of:< / p >
< ul >
< li >
< p > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / p >
< / li >
< li >
< p > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / p >
< / li >
< li >
< p > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / p >
< / li >
< li >
< p > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / p >
< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-07-05 15:25:53 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-09-21 16:05:07 +03:00
< h3 id = "user_may_create_room" > < a class = "header" href = "#user_may_create_room" > < code > user_may_create_room< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-07-05 15:25:53 +03:00
< p > < em > Changed in Synapse v1.62.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean is now deprecated.< / em > < / p >
< pre > < code class = "language-python" > async def user_may_create_room(user_id: str) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , bool]
2021-09-21 16:05:07 +03:00
< / code > < / pre >
2022-07-05 15:25:53 +03:00
< p > Called when processing a room creation request.< / p >
< p > The callback must return one of:< / p >
< ul >
< li >
< p > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / p >
< / li >
< li >
< p > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / p >
< / li >
< li >
< p > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / p >
< / li >
< li >
< p > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / p >
< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-07-05 15:25:53 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-09-21 16:05:07 +03:00
< h3 id = "user_may_create_room_alias" > < a class = "header" href = "#user_may_create_room_alias" > < code > user_may_create_room_alias< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-07-05 15:25:53 +03:00
< p > < em > Changed in Synapse v1.62.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean is now deprecated.< / em > < / p >
< pre > < code class = "language-python" > async def user_may_create_room_alias(user_id: str, room_alias: " synapse.module_api.RoomAlias" ) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , bool]
2021-09-21 16:05:07 +03:00
< / code > < / pre >
2022-07-05 15:25:53 +03:00
< p > Called when trying to associate an alias with an existing room.< / p >
< p > The callback must return one of:< / p >
< ul >
< li >
< p > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / p >
< / li >
< li >
< p > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / p >
< / li >
< li >
< p > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / p >
< / li >
< li >
< p > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / p >
< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-07-05 15:25:53 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-09-21 16:05:07 +03:00
< h3 id = "user_may_publish_room" > < a class = "header" href = "#user_may_publish_room" > < code > user_may_publish_room< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-07-05 15:25:53 +03:00
< p > < em > Changed in Synapse v1.62.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean is now deprecated.< / em > < / p >
< pre > < code class = "language-python" > async def user_may_publish_room(user_id: str, room_id: str) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , bool]
2021-09-21 16:05:07 +03:00
< / code > < / pre >
2022-07-05 15:25:53 +03:00
< p > Called when trying to publish a room to the homeserver's public rooms directory.< / p >
< p > The callback must return one of:< / p >
< ul >
< li >
< p > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / p >
< / li >
< li >
< p > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / p >
< / li >
< li >
< p > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / p >
< / li >
< li >
< p > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / p >
< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-07-05 15:25:53 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-09-21 16:05:07 +03:00
< h3 id = "check_username_for_spam" > < a class = "header" href = "#check_username_for_spam" > < code > check_username_for_spam< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-04-05 17:15:14 +03:00
< pre > < code class = "language-python" > async def check_username_for_spam(user_profile: synapse.module_api.UserProfile) -> bool
2021-09-21 16:05:07 +03:00
< / code > < / pre >
< p > Called when computing search results in the user directory. The module must return a
2022-03-08 18:38:01 +03:00
< code > bool< / code > indicating whether the given user should be excluded from user directory
searches. Return < code > True< / code > to indicate that the user is spammy and exclude them from
search results; otherwise return < code > False< / code > .< / p >
< p > The profile is represented as a dictionary with the following keys:< / p >
2021-09-21 16:05:07 +03:00
< ul >
2022-04-05 17:15:14 +03:00
< li > < code > user_id: str< / code > . The Matrix ID for this user.< / li >
< li > < code > display_name: Optional[str]< / code > . The user's display name, or < code > None< / code > if this user
has not set a display name.< / li >
< li > < code > avatar_url: Optional[str]< / code > . The < code > mxc://< / code > URL to the user's avatar, or < code > None< / code >
if this user has not set an avatar.< / li >
2021-09-21 16:05:07 +03:00
< / ul >
< p > The module is given a copy of the original dictionary, so modifying it from within the
module cannot modify a user's profile when included in user directory search results.< / p >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > False< / code > , Synapse falls through to the next one. The value of the first
callback that does not return < code > False< / code > will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback.< / p >
2021-09-21 16:05:07 +03:00
< h3 id = "check_registration_for_spam" > < a class = "header" href = "#check_registration_for_spam" > < code > check_registration_for_spam< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2021-09-21 16:05:07 +03:00
< pre > < code class = "language-python" > async def check_registration_for_spam(
email_threepid: Optional[dict],
username: Optional[str],
request_info: Collection[Tuple[str, str]],
auth_provider_id: Optional[str] = None,
) -> " synapse.spam_checker_api.RegistrationBehaviour"
< / code > < / pre >
< p > Called when registering a new user. The module must return a < code > RegistrationBehaviour< / code >
indicating whether the registration can go through or must be denied, or whether the user
may be allowed to register but will be shadow banned.< / p >
< p > The arguments passed to this callback are:< / p >
< ul >
< li > < code > email_threepid< / code > : The email address used for registering, if any.< / li >
< li > < code > username< / code > : The username the user would like to register. Can be < code > None< / code > , meaning that
Synapse will generate one later.< / li >
< li > < code > request_info< / code > : A collection of tuples, which first item is a user agent, and which
second item is an IP address. These user agents and IP addresses are the ones that were
used during the registration process.< / li >
< li > < code > auth_provider_id< / code > : The identifier of the SSO authentication provider, if any.< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > RegistrationBehaviour.ALLOW< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > RegistrationBehaviour.ALLOW< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2021-09-21 16:05:07 +03:00
< h3 id = "check_media_file_for_spam" > < a class = "header" href = "#check_media_file_for_spam" > < code > check_media_file_for_spam< / code > < / a > < / h3 >
2021-11-02 17:27:50 +03:00
< p > < em > First introduced in Synapse v1.37.0< / em > < / p >
2022-07-05 15:25:53 +03:00
< p > < em > Changed in Synapse v1.62.0: < code > synapse.module_api.NOT_SPAM< / code > and < code > synapse.module_api.errors.Codes< / code > can be returned by this callback. Returning a boolean is now deprecated.< / em > < / p >
2021-09-21 16:05:07 +03:00
< pre > < code class = "language-python" > async def check_media_file_for_spam(
2023-03-14 19:43:55 +03:00
file_wrapper: " synapse.media.media_storage.ReadableFileWrapper" ,
file_info: " synapse.media._base.FileInfo" ,
2022-07-05 15:25:53 +03:00
) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" , bool]
2021-09-21 16:05:07 +03:00
< / code > < / pre >
2022-07-05 15:25:53 +03:00
< p > Called when storing a local or remote file.< / p >
< p > The callback must return one of:< / p >
< ul >
< li >
< p > < code > synapse.module_api.NOT_SPAM< / code > , to allow the operation. Other callbacks may still
decide to reject it.< / p >
< / li >
< li >
< p > < code > synapse.module_api.errors.Codes< / code > to reject the operation with an error code. In case
of doubt, < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > is a good error code.< / p >
< / li >
< li >
< p > (deprecated) < code > False< / code > , which is the same as returning < code > synapse.module_api.NOT_SPAM< / code > .< / p >
< / li >
< li >
< p > (deprecated) < code > True< / code > , which is the same as returning < code > synapse.module_api.errors.Codes.FORBIDDEN< / code > .< / p >
< / li >
< / ul >
2021-11-02 17:27:50 +03:00
< p > If multiple modules implement this callback, they will be considered in order. If a
2022-07-05 15:25:53 +03:00
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
2022-05-31 16:28:14 +03:00
< h3 id = "should_drop_federated_event" > < a class = "header" href = "#should_drop_federated_event" > < code > should_drop_federated_event< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.60.0< / em > < / p >
< pre > < code class = "language-python" > async def should_drop_federated_event(event: " synapse.events.EventBase" ) -> bool
< / code > < / pre >
< p > Called when checking whether a remote server can federate an event with us. < strong > Returning
< code > True< / code > from this function will silently drop a federated event and split-brain our view
of a room's DAG, and thus you shouldn't use this callback unless you know what you are
doing.< / strong > < / p >
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > False< / code > , Synapse falls through to the next one. The value of the first
callback that does not return < code > False< / code > will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback.< / p >
2023-07-04 19:40:11 +03:00
< h3 id = "check_login_for_spam" > < a class = "header" href = "#check_login_for_spam" > < code > check_login_for_spam< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.87.0< / em > < / p >
< pre > < code class = "language-python" > async def check_login_for_spam(
user_id: str,
device_id: Optional[str],
initial_display_name: Optional[str],
request_info: Collection[Tuple[Optional[str], str]],
auth_provider_id: Optional[str] = None,
) -> Union[" synapse.module_api.NOT_SPAM" , " synapse.module_api.errors.Codes" ]
< / code > < / pre >
< p > Called when a user logs in.< / p >
< p > The arguments passed to this callback are:< / p >
< ul >
< li > < code > user_id< / code > : The user ID the user is logging in with< / li >
< li > < code > device_id< / code > : The device ID the user is re-logging into.< / li >
< li > < code > initial_display_name< / code > : The device display name, if any.< / li >
< li > < code > request_info< / code > : A collection of tuples, which first item is a user agent, and which
second item is an IP address. These user agents and IP addresses are the ones that were
used during the login process.< / li >
< li > < code > auth_provider_id< / code > : The identifier of the SSO authentication provider, if any.< / li >
< / ul >
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > synapse.module_api.NOT_SPAM< / code > , Synapse falls through to the next one.
The value of the first callback that does not return < code > synapse.module_api.NOT_SPAM< / code > will
be used. If this happens, Synapse will not call any of the subsequent implementations of
this callback.< / p >
< p > < em > Note:< / em > This will not be called when a user registers.< / p >
2021-09-21 16:05:07 +03:00
< h2 id = "example" > < a class = "header" href = "#example" > Example< / a > < / h2 >
< p > The example below is a module that implements the spam checker callback
< code > check_event_for_spam< / code > to deny any message sent by users whose Matrix user IDs are
mentioned in a configured list, and registers a web resource to the path
< code > /_synapse/client/list_spam_checker/is_evil< / code > that returns a JSON object indicating
whether the provided user appears in that list.< / p >
< pre > < code class = "language-python" > import json
from typing import Union
from twisted.web.resource import Resource
from twisted.web.server import Request
from synapse.module_api import ModuleApi
class IsUserEvilResource(Resource):
def __init__(self, config):
super(IsUserEvilResource, self).__init__()
self.evil_users = config.get(" evil_users" ) or []
def render_GET(self, request: Request):
2021-10-05 16:13:48 +03:00
user = request.args.get(b" user" )[0].decode()
2021-09-21 16:05:07 +03:00
request.setHeader(b" Content-Type" , b" application/json" )
2021-10-05 16:13:48 +03:00
return json.dumps({" evil" : user in self.evil_users}).encode()
2021-09-21 16:05:07 +03:00
class ListSpamChecker:
def __init__(self, config: dict, api: ModuleApi):
self.api = api
self.evil_users = config.get(" evil_users" ) or []
self.api.register_spam_checker_callbacks(
check_event_for_spam=self.check_event_for_spam,
)
self.api.register_web_resource(
path=" /_synapse/client/list_spam_checker/is_evil" ,
resource=IsUserEvilResource(config),
)
2022-07-05 15:25:53 +03:00
async def check_event_for_spam(self, event: " synapse.events.EventBase" ) -> Union[Literal[" NOT_SPAM" ], Codes]:
if event.sender in self.evil_users:
return Codes.FORBIDDEN
else:
return synapse.module_api.NOT_SPAM
2021-09-21 16:05:07 +03:00
< / code > < / pre >
< / main >
< nav class = "nav-wrapper" aria-label = "Page navigation" >
<!-- Mobile navigation buttons -->
< a rel = "prev" href = "../modules/writing_a_module.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 = "../modules/third_party_rules_callbacks.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 = "../modules/writing_a_module.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 = "../modules/third_party_rules_callbacks.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 >
