2022-05-10 12:45:01 +03:00
<!DOCTYPE HTML>
< html lang = "en" class = "sidebar-visible no-js light" >
< head >
<!-- Book generated using mdBook -->
< meta charset = "UTF-8" >
< title > Password auth provider 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" >
2023-12-11 17:56:30 +03:00
< link rel = "stylesheet" href = "../docs/website_files/version-picker.css" >
2022-05-10 12:45:01 +03:00
< / 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 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 = "../development/url_previews.html" > URL Previews< / 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 = "../modul
< / 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 >
2023-12-11 17:56:30 +03:00
< div class = "version-picker" >
< div class = "dropdown" >
< div class = "select" >
< span > < / span >
< i class = "fa fa-chevron-down" > < / i >
< / div >
< input type = "hidden" name = "version" >
< ul class = "dropdown-menu" >
<!-- Versions will be added dynamically in version - picker.js -->
< / ul >
< / div >
< / div >
2022-05-10 12:45:01 +03:00
< / 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/password_auth_provider_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 = "password-auth-provider-callbacks" > < a class = "header" href = "#password-auth-provider-callbacks" > Password auth provider callbacks< / a > < / h1 >
< p > Password auth providers offer a way for server administrators to integrate
their Synapse installation with an external authentication system. The callbacks can be
registered by using the Module API's < code > register_password_auth_provider_callbacks< / code > method.< / p >
< h2 id = "callbacks" > < a class = "header" href = "#callbacks" > Callbacks< / a > < / h2 >
< h3 id = "auth_checkers" > < a class = "header" href = "#auth_checkers" > < code > auth_checkers< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.46.0< / em > < / p >
< pre > < code class = "language-python" > auth_checkers: Dict[Tuple[str, Tuple[str, ...]], Callable]
< / code > < / pre >
< p > A dict mapping from tuples of a login type identifier (such as < code > m.login.password< / code > ) and a
tuple of field names (such as < code > (" password" , " secret_thing" )< / code > ) to authentication checking
callbacks, which should be of the following form:< / p >
< pre > < code class = "language-python" > async def check_auth(
user: str,
login_type: str,
login_dict: " synapse.module_api.JsonDict" ,
) -> Optional[
Tuple[
str,
Optional[Callable[[" synapse.module_api.LoginResponse" ], Awaitable[None]]]
]
]
< / code > < / pre >
< p > The login type and field names should be provided by the user in the
request to the < code > /login< / code > API. < a href = "https://matrix.org/docs/spec/client_server/latest#authentication-types" > The Matrix specification< / a >
defines some types, however user defined ones are also allowed.< / p >
< p > The callback is passed the < code > user< / code > field provided by the client (which might not be in
< code > @username:server< / code > form), the login type, and a dictionary of login secrets passed by
the client.< / p >
< p > If the authentication is successful, the module must return the user's Matrix ID (e.g.
< code > @alice:example.com< / code > ) and optionally a callback to be called with the response to the
< code > /login< / code > request. If the module doesn't wish to return a callback, it must return < code > None< / code >
instead.< / p >
< p > If the authentication is unsuccessful, the module must return < code > None< / code > .< / p >
< p > If multiple modules register an auth checker for the same login type but with different
fields, Synapse will refuse to start.< / p >
< p > If multiple modules register an auth checker for the same login type with the same fields,
then the callbacks will be executed in order, until one returns a Matrix User ID (and
optionally a callback). In that case, the return value of that callback will be accepted
and subsequent callbacks will not be fired. If every callback returns < code > None< / code > , then the
authentication fails.< / p >
< h3 id = "check_3pid_auth" > < a class = "header" href = "#check_3pid_auth" > < code > check_3pid_auth< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.46.0< / em > < / p >
< pre > < code class = "language-python" > async def check_3pid_auth(
medium: str,
address: str,
password: str,
) -> Optional[
Tuple[
str,
Optional[Callable[[" synapse.module_api.LoginResponse" ], Awaitable[None]]]
]
]
< / code > < / pre >
< p > Called when a user attempts to register or log in with a third party identifier,
such as email. It is passed the medium (eg. < code > email< / code > ), an address (eg. < code > jdoe@example.com< / code > )
and the user's password.< / p >
< p > If the authentication is successful, the module must return the user's Matrix ID (e.g.
< code > @alice:example.com< / code > ) and optionally a callback to be called with the response to the < code > /login< / code > request.
If the module doesn't wish to return a callback, it must return None instead.< / p >
< p > If the authentication is unsuccessful, the module must return < code > None< / code > .< / p >
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > None< / code > , Synapse falls through to the next one. The value of the first
callback that does not return < code > None< / code > will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback. If every callback returns < code > None< / code > ,
the authentication is denied.< / p >
< h3 id = "on_logged_out" > < a class = "header" href = "#on_logged_out" > < code > on_logged_out< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.46.0< / em > < / p >
< pre > < code class = "language-python" > async def on_logged_out(
user_id: str,
device_id: Optional[str],
access_token: str
) -> None
< / code > < / pre >
< p > Called during a logout request for a user. It is passed the qualified user ID, the ID of the
deactivated device (if any: access tokens are occasionally created without an associated
device ID), and the (now deactivated) access token.< / p >
< p > If multiple modules implement this callback, Synapse runs them all in order.< / p >
< h3 id = "get_username_for_registration" > < a class = "header" href = "#get_username_for_registration" > < code > get_username_for_registration< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.52.0< / em > < / p >
< pre > < code class = "language-python" > async def get_username_for_registration(
uia_results: Dict[str, Any],
params: Dict[str, Any],
) -> Optional[str]
< / code > < / pre >
< p > Called when registering a new user. The module can return a username to set for the user
being registered by returning it as a string, or < code > None< / code > if it doesn't wish to force a
username for this user. If a username is returned, it will be used as the local part of a
user's full Matrix ID (e.g. it's < code > alice< / code > in < code > @alice:example.com< / code > ).< / p >
< p > This callback is called once < a href = "https://spec.matrix.org/latest/client-server-api/#user-interactive-authentication-api" > User-Interactive Authentication< / a >
has been completed by the user. It is not called when registering a user via SSO. It is
passed two dictionaries, which include the information that the user has provided during
the registration process.< / p >
< p > The first dictionary contains the results of the < a href = "https://spec.matrix.org/latest/client-server-api/#user-interactive-authentication-api" > User-Interactive Authentication< / a >
flow followed by the user. Its keys are the identifiers of every step involved in the flow,
associated with either a boolean value indicating whether the step was correctly completed,
or additional information (e.g. email address, phone number...). A list of most existing
identifiers can be found in the < a href = "https://spec.matrix.org/v1.1/client-server-api/#authentication-types" > Matrix specification< / a > .
Here's an example featuring all currently supported keys:< / p >
< pre > < code class = "language-python" > {
" m.login.dummy" : True, # Dummy authentication
" m.login.terms" : True, # User has accepted the terms of service for the homeserver
" m.login.recaptcha" : True, # User has completed the recaptcha challenge
" m.login.email.identity" : { # User has provided and verified an email address
" medium" : " email" ,
" address" : " alice@example.com" ,
" validated_at" : 1642701357084,
},
" m.login.msisdn" : { # User has provided and verified a phone number
" medium" : " msisdn" ,
" address" : " 33123456789" ,
" validated_at" : 1642701357084,
},
" m.login.registration_token" : " sometoken" , # User has registered through a registration token
}
< / code > < / pre >
< p > The second dictionary contains the parameters provided by the user's client in the request
to < code > /_matrix/client/v3/register< / code > . See the < a href = "https://spec.matrix.org/latest/client-server-api/#post_matrixclientv3register" > Matrix specification< / a >
for a complete list of these parameters.< / p >
< p > If the module cannot, or does not wish to, generate a username for this user, it must
return < code > None< / code > .< / p >
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > None< / code > , Synapse falls through to the next one. The value of the first
callback that does not return < code > None< / code > will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback. If every callback returns < code > None< / code > ,
the username provided by the user is used, if any (otherwise one is automatically
generated).< / p >
< h3 id = "get_displayname_for_registration" > < a class = "header" href = "#get_displayname_for_registration" > < code > get_displayname_for_registration< / code > < / a > < / h3 >
< p > < em > First introduced in Synapse v1.54.0< / em > < / p >
< pre > < code class = "language-python" > async def get_displayname_for_registration(
uia_results: Dict[str, Any],
params: Dict[str, Any],
) -> Optional[str]
< / code > < / pre >
< p > Called when registering a new user. The module can return a display name to set for the
user being registered by returning it as a string, or < code > None< / code > if it doesn't wish to force a
display name for this user.< / p >
< p > This callback is called once < a href = "https://spec.matrix.org/latest/client-server-api/#user-interactive-authentication-api" > User-Interactive Authentication< / a >
has been completed by the user. It is not called when registering a user via SSO. It is
passed two dictionaries, which include the information that the user has provided during
the registration process. These dictionaries are identical to the ones passed to
< a href = "#get_username_for_registration" > < code > get_username_for_registration< / code > < / a > , so refer to the
documentation of this callback for more information about them.< / p >
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > None< / code > , Synapse falls through to the next one. The value of the first
callback that does not return < code > None< / code > will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback. If every callback returns < code > None< / code > ,
the username will be used (e.g. < code > alice< / code > if the user being registered is < code > @alice:example.com< / code > ).< / p >
< h2 id = "is_3pid_allowed" > < a class = "header" href = "#is_3pid_allowed" > < code > is_3pid_allowed< / code > < / a > < / h2 >
< p > < em > First introduced in Synapse v1.53.0< / em > < / p >
< pre > < code class = "language-python" > async def is_3pid_allowed(self, medium: str, address: str, registration: bool) -> bool
< / code > < / pre >
< p > Called when attempting to bind a third-party identifier (i.e. an email address or a phone
number). The module is given the medium of the third-party identifier (which is < code > email< / code > if
the identifier is an email address, or < code > msisdn< / code > if the identifier is a phone number) and
its address, as well as a boolean indicating whether the attempt to bind is happening as
part of registering a new user. The module must return a boolean indicating whether the
identifier can be allowed to be bound to an account on the local homeserver.< / p >
< p > If multiple modules implement this callback, they will be considered in order. If a
callback returns < code > True< / code > , Synapse falls through to the next one. The value of the first
callback that does not return < code > True< / code > will be used. If this happens, Synapse will not call
any of the subsequent implementations of this callback.< / p >
< h2 id = "example" > < a class = "header" href = "#example" > Example< / a > < / h2 >
< p > The example module below implements authentication checkers for two different login types: < / p >
< ul >
< li > < code > my.login.type< / code >
< ul >
< li > Expects a < code > my_field< / code > field to be sent to < code > /login< / code > < / li >
< li > Is checked by the method: < code > self.check_my_login< / code > < / li >
< / ul >
< / li >
< li > < code > m.login.password< / code > (defined in < a href = "https://matrix.org/docs/spec/client_server/latest#password-based" > the spec< / a > )
< ul >
< li > Expects a < code > password< / code > field to be sent to < code > /login< / code > < / li >
< li > Is checked by the method: < code > self.check_pass< / code > < / li >
< / ul >
< / li >
< / ul >
< pre > < code class = "language-python" > from typing import Awaitable, Callable, Optional, Tuple
import synapse
from synapse import module_api
class MyAuthProvider:
def __init__(self, config: dict, api: module_api):
self.api = api
self.credentials = {
" bob" : " building" ,
" @scoop:matrix.org" : " digging" ,
}
api.register_password_auth_provider_callbacks(
auth_checkers={
(" my.login_type" , (" my_field" ,)): self.check_my_login,
(" m.login.password" , (" password" ,)): self.check_pass,
},
)
async def check_my_login(
self,
username: str,
login_type: str,
login_dict: " synapse.module_api.JsonDict" ,
) -> Optional[
Tuple[
str,
Optional[Callable[[" synapse.module_api.LoginResponse" ], Awaitable[None]]],
]
]:
if login_type != " my.login_type" :
return None
if self.credentials.get(username) == login_dict.get(" my_field" ):
return self.api.get_qualified_user_id(username)
async def check_pass(
self,
username: str,
login_type: str,
login_dict: " synapse.module_api.JsonDict" ,
) -> Optional[
Tuple[
str,
Optional[Callable[[" synapse.module_api.LoginResponse" ], Awaitable[None]]],
]
]:
if login_type != " m.login.password" :
return None
if self.credentials.get(username) == login_dict.get(" password" ):
return self.api.get_qualified_user_id(username)
< / code > < / pre >
< / main >
< nav class = "nav-wrapper" aria-label = "Page navigation" >
<!-- Mobile navigation buttons -->
< a rel = "prev" href = "../modules/account_validity_callbacks.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/background_update_controller_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/account_validity_callbacks.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/background_update_controller_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 >
2023-12-11 17:56:30 +03:00
< script type = "text/javascript" src = "../docs/website_files/version-picker.js" > < / script >
< script type = "text/javascript" src = "../docs/website_files/version.js" > < / script >
2022-05-10 12:45:01 +03:00
< / body >
2023-12-11 17:56:30 +03:00
< / html >
